1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * net/core/devlink.c - Network physical/parent device Netlink interface
5 * Heavily inspired by net/wireless/
6 * Copyright (c) 2016 Mellanox Technologies. All rights reserved.
7 * Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com>
10 #include <linux/etherdevice.h>
11 #include <linux/kernel.h>
12 #include <linux/module.h>
13 #include <linux/types.h>
14 #include <linux/slab.h>
15 #include <linux/gfp.h>
16 #include <linux/device.h>
17 #include <linux/list.h>
18 #include <linux/netdevice.h>
19 #include <linux/spinlock.h>
20 #include <linux/refcount.h>
21 #include <linux/workqueue.h>
22 #include <linux/u64_stats_sync.h>
23 #include <linux/timekeeping.h>
24 #include <rdma/ib_verbs.h>
25 #include <net/netlink.h>
26 #include <net/genetlink.h>
27 #include <net/rtnetlink.h>
28 #include <net/net_namespace.h>
30 #include <net/devlink.h>
31 #define CREATE_TRACE_POINTS
32 #include <trace/events/devlink.h>
34 #define DEVLINK_RELOAD_STATS_ARRAY_SIZE \
35 (__DEVLINK_RELOAD_LIMIT_MAX * __DEVLINK_RELOAD_ACTION_MAX)
37 struct devlink_dev_stats {
38 u32 reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE];
39 u32 remote_reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE];
44 struct list_head port_list;
45 struct list_head rate_list;
46 struct list_head sb_list;
47 struct list_head dpipe_table_list;
48 struct list_head resource_list;
49 struct list_head param_list;
50 struct list_head region_list;
51 struct list_head reporter_list;
52 struct mutex reporters_lock; /* protects reporter_list */
53 struct devlink_dpipe_headers *dpipe_headers;
54 struct list_head trap_list;
55 struct list_head trap_group_list;
56 struct list_head trap_policer_list;
57 const struct devlink_ops *ops;
59 struct xarray snapshot_ids;
60 struct devlink_dev_stats stats;
63 /* Serializes access to devlink instance specific objects such as
64 * port, sb, dpipe, resource, params, region, traps and more.
69 struct completion comp;
70 char priv[] __aligned(NETDEV_ALIGN);
74 * struct devlink_resource - devlink resource
75 * @name: name of the resource
76 * @id: id, per devlink instance
77 * @size: size of the resource
78 * @size_new: updated size of the resource, reload is needed
79 * @size_valid: valid in case the total size of the resource is valid
80 * including its children
81 * @parent: parent resource
82 * @size_params: size parameters
84 * @resource_list: list of child resources
85 * @occ_get: occupancy getter callback
86 * @occ_get_priv: occupancy getter callback priv
88 struct devlink_resource {
94 struct devlink_resource *parent;
95 struct devlink_resource_size_params size_params;
96 struct list_head list;
97 struct list_head resource_list;
98 devlink_resource_occ_get_t *occ_get;
102 void *devlink_priv(struct devlink *devlink)
104 return &devlink->priv;
106 EXPORT_SYMBOL_GPL(devlink_priv);
108 struct devlink *priv_to_devlink(void *priv)
110 return container_of(priv, struct devlink, priv);
112 EXPORT_SYMBOL_GPL(priv_to_devlink);
114 struct device *devlink_to_dev(const struct devlink *devlink)
118 EXPORT_SYMBOL_GPL(devlink_to_dev);
120 static struct devlink_dpipe_field devlink_dpipe_fields_ethernet[] = {
122 .name = "destination mac",
123 .id = DEVLINK_DPIPE_FIELD_ETHERNET_DST_MAC,
128 struct devlink_dpipe_header devlink_dpipe_header_ethernet = {
130 .id = DEVLINK_DPIPE_HEADER_ETHERNET,
131 .fields = devlink_dpipe_fields_ethernet,
132 .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ethernet),
135 EXPORT_SYMBOL_GPL(devlink_dpipe_header_ethernet);
137 static struct devlink_dpipe_field devlink_dpipe_fields_ipv4[] = {
139 .name = "destination ip",
140 .id = DEVLINK_DPIPE_FIELD_IPV4_DST_IP,
145 struct devlink_dpipe_header devlink_dpipe_header_ipv4 = {
147 .id = DEVLINK_DPIPE_HEADER_IPV4,
148 .fields = devlink_dpipe_fields_ipv4,
149 .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv4),
152 EXPORT_SYMBOL_GPL(devlink_dpipe_header_ipv4);
154 static struct devlink_dpipe_field devlink_dpipe_fields_ipv6[] = {
156 .name = "destination ip",
157 .id = DEVLINK_DPIPE_FIELD_IPV6_DST_IP,
162 struct devlink_dpipe_header devlink_dpipe_header_ipv6 = {
164 .id = DEVLINK_DPIPE_HEADER_IPV6,
165 .fields = devlink_dpipe_fields_ipv6,
166 .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv6),
169 EXPORT_SYMBOL_GPL(devlink_dpipe_header_ipv6);
171 EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwmsg);
172 EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwerr);
173 EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_trap_report);
175 static const struct nla_policy devlink_function_nl_policy[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1] = {
176 [DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR] = { .type = NLA_BINARY },
177 [DEVLINK_PORT_FN_ATTR_STATE] =
178 NLA_POLICY_RANGE(NLA_U8, DEVLINK_PORT_FN_STATE_INACTIVE,
179 DEVLINK_PORT_FN_STATE_ACTIVE),
182 static DEFINE_XARRAY_FLAGS(devlinks, XA_FLAGS_ALLOC);
183 #define DEVLINK_REGISTERED XA_MARK_1
185 /* devlink instances are open to the access from the user space after
186 * devlink_register() call. Such logical barrier allows us to have certain
187 * expectations related to locking.
189 * Before *_register() - we are in initialization stage and no parallel
190 * access possible to the devlink instance. All drivers perform that phase
191 * by implicitly holding device_lock.
193 * After *_register() - users and driver can access devlink instance at
196 #define ASSERT_DEVLINK_REGISTERED(d) \
197 WARN_ON_ONCE(!xa_get_mark(&devlinks, (d)->index, DEVLINK_REGISTERED))
198 #define ASSERT_DEVLINK_NOT_REGISTERED(d) \
199 WARN_ON_ONCE(xa_get_mark(&devlinks, (d)->index, DEVLINK_REGISTERED))
203 * An overall lock guarding every operation coming from userspace.
204 * It also guards devlink devices list and it is taken when
205 * driver registers/unregisters it.
207 static DEFINE_MUTEX(devlink_mutex);
209 struct net *devlink_net(const struct devlink *devlink)
211 return read_pnet(&devlink->_net);
213 EXPORT_SYMBOL_GPL(devlink_net);
215 void devlink_put(struct devlink *devlink)
217 if (refcount_dec_and_test(&devlink->refcount))
218 complete(&devlink->comp);
221 struct devlink *__must_check devlink_try_get(struct devlink *devlink)
223 if (refcount_inc_not_zero(&devlink->refcount))
228 static struct devlink *devlink_get_from_attrs(struct net *net,
229 struct nlattr **attrs)
231 struct devlink *devlink;
237 if (!attrs[DEVLINK_ATTR_BUS_NAME] || !attrs[DEVLINK_ATTR_DEV_NAME])
238 return ERR_PTR(-EINVAL);
240 busname = nla_data(attrs[DEVLINK_ATTR_BUS_NAME]);
241 devname = nla_data(attrs[DEVLINK_ATTR_DEV_NAME]);
243 lockdep_assert_held(&devlink_mutex);
245 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
246 if (strcmp(devlink->dev->bus->name, busname) == 0 &&
247 strcmp(dev_name(devlink->dev), devname) == 0 &&
248 net_eq(devlink_net(devlink), net)) {
254 if (!found || !devlink_try_get(devlink))
255 devlink = ERR_PTR(-ENODEV);
260 static struct devlink_port *devlink_port_get_by_index(struct devlink *devlink,
261 unsigned int port_index)
263 struct devlink_port *devlink_port;
265 list_for_each_entry(devlink_port, &devlink->port_list, list) {
266 if (devlink_port->index == port_index)
272 static bool devlink_port_index_exists(struct devlink *devlink,
273 unsigned int port_index)
275 return devlink_port_get_by_index(devlink, port_index);
278 static struct devlink_port *devlink_port_get_from_attrs(struct devlink *devlink,
279 struct nlattr **attrs)
281 if (attrs[DEVLINK_ATTR_PORT_INDEX]) {
282 u32 port_index = nla_get_u32(attrs[DEVLINK_ATTR_PORT_INDEX]);
283 struct devlink_port *devlink_port;
285 devlink_port = devlink_port_get_by_index(devlink, port_index);
287 return ERR_PTR(-ENODEV);
290 return ERR_PTR(-EINVAL);
293 static struct devlink_port *devlink_port_get_from_info(struct devlink *devlink,
294 struct genl_info *info)
296 return devlink_port_get_from_attrs(devlink, info->attrs);
300 devlink_rate_is_leaf(struct devlink_rate *devlink_rate)
302 return devlink_rate->type == DEVLINK_RATE_TYPE_LEAF;
306 devlink_rate_is_node(struct devlink_rate *devlink_rate)
308 return devlink_rate->type == DEVLINK_RATE_TYPE_NODE;
311 static struct devlink_rate *
312 devlink_rate_leaf_get_from_info(struct devlink *devlink, struct genl_info *info)
314 struct devlink_rate *devlink_rate;
315 struct devlink_port *devlink_port;
317 devlink_port = devlink_port_get_from_attrs(devlink, info->attrs);
318 if (IS_ERR(devlink_port))
319 return ERR_CAST(devlink_port);
320 devlink_rate = devlink_port->devlink_rate;
321 return devlink_rate ?: ERR_PTR(-ENODEV);
324 static struct devlink_rate *
325 devlink_rate_node_get_by_name(struct devlink *devlink, const char *node_name)
327 static struct devlink_rate *devlink_rate;
329 list_for_each_entry(devlink_rate, &devlink->rate_list, list) {
330 if (devlink_rate_is_node(devlink_rate) &&
331 !strcmp(node_name, devlink_rate->name))
334 return ERR_PTR(-ENODEV);
337 static struct devlink_rate *
338 devlink_rate_node_get_from_attrs(struct devlink *devlink, struct nlattr **attrs)
340 const char *rate_node_name;
343 if (!attrs[DEVLINK_ATTR_RATE_NODE_NAME])
344 return ERR_PTR(-EINVAL);
345 rate_node_name = nla_data(attrs[DEVLINK_ATTR_RATE_NODE_NAME]);
346 len = strlen(rate_node_name);
347 /* Name cannot be empty or decimal number */
348 if (!len || strspn(rate_node_name, "0123456789") == len)
349 return ERR_PTR(-EINVAL);
351 return devlink_rate_node_get_by_name(devlink, rate_node_name);
354 static struct devlink_rate *
355 devlink_rate_node_get_from_info(struct devlink *devlink, struct genl_info *info)
357 return devlink_rate_node_get_from_attrs(devlink, info->attrs);
360 static struct devlink_rate *
361 devlink_rate_get_from_info(struct devlink *devlink, struct genl_info *info)
363 struct nlattr **attrs = info->attrs;
365 if (attrs[DEVLINK_ATTR_PORT_INDEX])
366 return devlink_rate_leaf_get_from_info(devlink, info);
367 else if (attrs[DEVLINK_ATTR_RATE_NODE_NAME])
368 return devlink_rate_node_get_from_info(devlink, info);
370 return ERR_PTR(-EINVAL);
374 struct list_head list;
377 u16 ingress_pools_count;
378 u16 egress_pools_count;
379 u16 ingress_tc_count;
383 static u16 devlink_sb_pool_count(struct devlink_sb *devlink_sb)
385 return devlink_sb->ingress_pools_count + devlink_sb->egress_pools_count;
388 static struct devlink_sb *devlink_sb_get_by_index(struct devlink *devlink,
389 unsigned int sb_index)
391 struct devlink_sb *devlink_sb;
393 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
394 if (devlink_sb->index == sb_index)
400 static bool devlink_sb_index_exists(struct devlink *devlink,
401 unsigned int sb_index)
403 return devlink_sb_get_by_index(devlink, sb_index);
406 static struct devlink_sb *devlink_sb_get_from_attrs(struct devlink *devlink,
407 struct nlattr **attrs)
409 if (attrs[DEVLINK_ATTR_SB_INDEX]) {
410 u32 sb_index = nla_get_u32(attrs[DEVLINK_ATTR_SB_INDEX]);
411 struct devlink_sb *devlink_sb;
413 devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
415 return ERR_PTR(-ENODEV);
418 return ERR_PTR(-EINVAL);
421 static struct devlink_sb *devlink_sb_get_from_info(struct devlink *devlink,
422 struct genl_info *info)
424 return devlink_sb_get_from_attrs(devlink, info->attrs);
427 static int devlink_sb_pool_index_get_from_attrs(struct devlink_sb *devlink_sb,
428 struct nlattr **attrs,
433 if (!attrs[DEVLINK_ATTR_SB_POOL_INDEX])
436 val = nla_get_u16(attrs[DEVLINK_ATTR_SB_POOL_INDEX]);
437 if (val >= devlink_sb_pool_count(devlink_sb))
443 static int devlink_sb_pool_index_get_from_info(struct devlink_sb *devlink_sb,
444 struct genl_info *info,
447 return devlink_sb_pool_index_get_from_attrs(devlink_sb, info->attrs,
452 devlink_sb_pool_type_get_from_attrs(struct nlattr **attrs,
453 enum devlink_sb_pool_type *p_pool_type)
457 if (!attrs[DEVLINK_ATTR_SB_POOL_TYPE])
460 val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_TYPE]);
461 if (val != DEVLINK_SB_POOL_TYPE_INGRESS &&
462 val != DEVLINK_SB_POOL_TYPE_EGRESS)
469 devlink_sb_pool_type_get_from_info(struct genl_info *info,
470 enum devlink_sb_pool_type *p_pool_type)
472 return devlink_sb_pool_type_get_from_attrs(info->attrs, p_pool_type);
476 devlink_sb_th_type_get_from_attrs(struct nlattr **attrs,
477 enum devlink_sb_threshold_type *p_th_type)
481 if (!attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE])
484 val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE]);
485 if (val != DEVLINK_SB_THRESHOLD_TYPE_STATIC &&
486 val != DEVLINK_SB_THRESHOLD_TYPE_DYNAMIC)
493 devlink_sb_th_type_get_from_info(struct genl_info *info,
494 enum devlink_sb_threshold_type *p_th_type)
496 return devlink_sb_th_type_get_from_attrs(info->attrs, p_th_type);
500 devlink_sb_tc_index_get_from_attrs(struct devlink_sb *devlink_sb,
501 struct nlattr **attrs,
502 enum devlink_sb_pool_type pool_type,
507 if (!attrs[DEVLINK_ATTR_SB_TC_INDEX])
510 val = nla_get_u16(attrs[DEVLINK_ATTR_SB_TC_INDEX]);
511 if (pool_type == DEVLINK_SB_POOL_TYPE_INGRESS &&
512 val >= devlink_sb->ingress_tc_count)
514 if (pool_type == DEVLINK_SB_POOL_TYPE_EGRESS &&
515 val >= devlink_sb->egress_tc_count)
522 devlink_sb_tc_index_get_from_info(struct devlink_sb *devlink_sb,
523 struct genl_info *info,
524 enum devlink_sb_pool_type pool_type,
527 return devlink_sb_tc_index_get_from_attrs(devlink_sb, info->attrs,
528 pool_type, p_tc_index);
531 struct devlink_region {
532 struct devlink *devlink;
533 struct devlink_port *port;
534 struct list_head list;
536 const struct devlink_region_ops *ops;
537 const struct devlink_port_region_ops *port_ops;
539 struct list_head snapshot_list;
545 struct devlink_snapshot {
546 struct list_head list;
547 struct devlink_region *region;
552 static struct devlink_region *
553 devlink_region_get_by_name(struct devlink *devlink, const char *region_name)
555 struct devlink_region *region;
557 list_for_each_entry(region, &devlink->region_list, list)
558 if (!strcmp(region->ops->name, region_name))
564 static struct devlink_region *
565 devlink_port_region_get_by_name(struct devlink_port *port,
566 const char *region_name)
568 struct devlink_region *region;
570 list_for_each_entry(region, &port->region_list, list)
571 if (!strcmp(region->ops->name, region_name))
577 static struct devlink_snapshot *
578 devlink_region_snapshot_get_by_id(struct devlink_region *region, u32 id)
580 struct devlink_snapshot *snapshot;
582 list_for_each_entry(snapshot, ®ion->snapshot_list, list)
583 if (snapshot->id == id)
589 #define DEVLINK_NL_FLAG_NEED_PORT BIT(0)
590 #define DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT BIT(1)
591 #define DEVLINK_NL_FLAG_NEED_RATE BIT(2)
592 #define DEVLINK_NL_FLAG_NEED_RATE_NODE BIT(3)
594 /* The per devlink instance lock is taken by default in the pre-doit
595 * operation, yet several commands do not require this. The global
596 * devlink lock is taken and protects from disruption by user-calls.
598 #define DEVLINK_NL_FLAG_NO_LOCK BIT(4)
600 static int devlink_nl_pre_doit(const struct genl_ops *ops,
601 struct sk_buff *skb, struct genl_info *info)
603 struct devlink_port *devlink_port;
604 struct devlink *devlink;
607 mutex_lock(&devlink_mutex);
608 devlink = devlink_get_from_attrs(genl_info_net(info), info->attrs);
609 if (IS_ERR(devlink)) {
610 mutex_unlock(&devlink_mutex);
611 return PTR_ERR(devlink);
613 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
614 mutex_lock(&devlink->lock);
615 info->user_ptr[0] = devlink;
616 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT) {
617 devlink_port = devlink_port_get_from_info(devlink, info);
618 if (IS_ERR(devlink_port)) {
619 err = PTR_ERR(devlink_port);
622 info->user_ptr[1] = devlink_port;
623 } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT) {
624 devlink_port = devlink_port_get_from_info(devlink, info);
625 if (!IS_ERR(devlink_port))
626 info->user_ptr[1] = devlink_port;
627 } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_RATE) {
628 struct devlink_rate *devlink_rate;
630 devlink_rate = devlink_rate_get_from_info(devlink, info);
631 if (IS_ERR(devlink_rate)) {
632 err = PTR_ERR(devlink_rate);
635 info->user_ptr[1] = devlink_rate;
636 } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_RATE_NODE) {
637 struct devlink_rate *rate_node;
639 rate_node = devlink_rate_node_get_from_info(devlink, info);
640 if (IS_ERR(rate_node)) {
641 err = PTR_ERR(rate_node);
644 info->user_ptr[1] = rate_node;
649 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
650 mutex_unlock(&devlink->lock);
651 devlink_put(devlink);
652 mutex_unlock(&devlink_mutex);
656 static void devlink_nl_post_doit(const struct genl_ops *ops,
657 struct sk_buff *skb, struct genl_info *info)
659 struct devlink *devlink;
661 devlink = info->user_ptr[0];
662 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
663 mutex_unlock(&devlink->lock);
664 devlink_put(devlink);
665 mutex_unlock(&devlink_mutex);
668 static struct genl_family devlink_nl_family;
670 enum devlink_multicast_groups {
671 DEVLINK_MCGRP_CONFIG,
674 static const struct genl_multicast_group devlink_nl_mcgrps[] = {
675 [DEVLINK_MCGRP_CONFIG] = { .name = DEVLINK_GENL_MCGRP_CONFIG_NAME },
678 static int devlink_nl_put_handle(struct sk_buff *msg, struct devlink *devlink)
680 if (nla_put_string(msg, DEVLINK_ATTR_BUS_NAME, devlink->dev->bus->name))
682 if (nla_put_string(msg, DEVLINK_ATTR_DEV_NAME, dev_name(devlink->dev)))
687 struct devlink_reload_combination {
688 enum devlink_reload_action action;
689 enum devlink_reload_limit limit;
692 static const struct devlink_reload_combination devlink_reload_invalid_combinations[] = {
694 /* can't reinitialize driver with no down time */
695 .action = DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
696 .limit = DEVLINK_RELOAD_LIMIT_NO_RESET,
701 devlink_reload_combination_is_invalid(enum devlink_reload_action action,
702 enum devlink_reload_limit limit)
706 for (i = 0; i < ARRAY_SIZE(devlink_reload_invalid_combinations); i++)
707 if (devlink_reload_invalid_combinations[i].action == action &&
708 devlink_reload_invalid_combinations[i].limit == limit)
714 devlink_reload_action_is_supported(struct devlink *devlink, enum devlink_reload_action action)
716 return test_bit(action, &devlink->ops->reload_actions);
720 devlink_reload_limit_is_supported(struct devlink *devlink, enum devlink_reload_limit limit)
722 return test_bit(limit, &devlink->ops->reload_limits);
725 static int devlink_reload_stat_put(struct sk_buff *msg,
726 enum devlink_reload_limit limit, u32 value)
728 struct nlattr *reload_stats_entry;
730 reload_stats_entry = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_STATS_ENTRY);
731 if (!reload_stats_entry)
734 if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_STATS_LIMIT, limit) ||
735 nla_put_u32(msg, DEVLINK_ATTR_RELOAD_STATS_VALUE, value))
736 goto nla_put_failure;
737 nla_nest_end(msg, reload_stats_entry);
741 nla_nest_cancel(msg, reload_stats_entry);
745 static int devlink_reload_stats_put(struct sk_buff *msg, struct devlink *devlink, bool is_remote)
747 struct nlattr *reload_stats_attr, *act_info, *act_stats;
752 reload_stats_attr = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_STATS);
754 reload_stats_attr = nla_nest_start(msg, DEVLINK_ATTR_REMOTE_RELOAD_STATS);
756 if (!reload_stats_attr)
759 for (i = 0; i <= DEVLINK_RELOAD_ACTION_MAX; i++) {
761 !devlink_reload_action_is_supported(devlink, i)) ||
762 i == DEVLINK_RELOAD_ACTION_UNSPEC)
764 act_info = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_ACTION_INFO);
766 goto nla_put_failure;
768 if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_ACTION, i))
769 goto action_info_nest_cancel;
770 act_stats = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_ACTION_STATS);
772 goto action_info_nest_cancel;
774 for (j = 0; j <= DEVLINK_RELOAD_LIMIT_MAX; j++) {
775 /* Remote stats are shown even if not locally supported.
776 * Stats of actions with unspecified limit are shown
777 * though drivers don't need to register unspecified
780 if ((!is_remote && j != DEVLINK_RELOAD_LIMIT_UNSPEC &&
781 !devlink_reload_limit_is_supported(devlink, j)) ||
782 devlink_reload_combination_is_invalid(i, j))
785 stat_idx = j * __DEVLINK_RELOAD_ACTION_MAX + i;
787 value = devlink->stats.reload_stats[stat_idx];
789 value = devlink->stats.remote_reload_stats[stat_idx];
790 if (devlink_reload_stat_put(msg, j, value))
791 goto action_stats_nest_cancel;
793 nla_nest_end(msg, act_stats);
794 nla_nest_end(msg, act_info);
796 nla_nest_end(msg, reload_stats_attr);
799 action_stats_nest_cancel:
800 nla_nest_cancel(msg, act_stats);
801 action_info_nest_cancel:
802 nla_nest_cancel(msg, act_info);
804 nla_nest_cancel(msg, reload_stats_attr);
808 static int devlink_nl_fill(struct sk_buff *msg, struct devlink *devlink,
809 enum devlink_command cmd, u32 portid,
812 struct nlattr *dev_stats;
815 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
819 if (devlink_nl_put_handle(msg, devlink))
820 goto nla_put_failure;
821 if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_FAILED, devlink->reload_failed))
822 goto nla_put_failure;
824 dev_stats = nla_nest_start(msg, DEVLINK_ATTR_DEV_STATS);
826 goto nla_put_failure;
828 if (devlink_reload_stats_put(msg, devlink, false))
829 goto dev_stats_nest_cancel;
830 if (devlink_reload_stats_put(msg, devlink, true))
831 goto dev_stats_nest_cancel;
833 nla_nest_end(msg, dev_stats);
834 genlmsg_end(msg, hdr);
837 dev_stats_nest_cancel:
838 nla_nest_cancel(msg, dev_stats);
840 genlmsg_cancel(msg, hdr);
844 static void devlink_notify(struct devlink *devlink, enum devlink_command cmd)
849 WARN_ON(cmd != DEVLINK_CMD_NEW && cmd != DEVLINK_CMD_DEL);
850 WARN_ON(!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED));
852 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
856 err = devlink_nl_fill(msg, devlink, cmd, 0, 0, 0);
862 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
863 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
866 static int devlink_nl_port_attrs_put(struct sk_buff *msg,
867 struct devlink_port *devlink_port)
869 struct devlink_port_attrs *attrs = &devlink_port->attrs;
871 if (!devlink_port->attrs_set)
874 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_LANES, attrs->lanes))
877 if (nla_put_u8(msg, DEVLINK_ATTR_PORT_SPLITTABLE, attrs->splittable))
879 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_FLAVOUR, attrs->flavour))
881 switch (devlink_port->attrs.flavour) {
882 case DEVLINK_PORT_FLAVOUR_PCI_PF:
883 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
884 attrs->pci_pf.controller) ||
885 nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_pf.pf))
887 if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_pf.external))
890 case DEVLINK_PORT_FLAVOUR_PCI_VF:
891 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
892 attrs->pci_vf.controller) ||
893 nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_vf.pf) ||
894 nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_VF_NUMBER, attrs->pci_vf.vf))
896 if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_vf.external))
899 case DEVLINK_PORT_FLAVOUR_PCI_SF:
900 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
901 attrs->pci_sf.controller) ||
902 nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER,
904 nla_put_u32(msg, DEVLINK_ATTR_PORT_PCI_SF_NUMBER,
908 case DEVLINK_PORT_FLAVOUR_PHYSICAL:
909 case DEVLINK_PORT_FLAVOUR_CPU:
910 case DEVLINK_PORT_FLAVOUR_DSA:
911 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_NUMBER,
912 attrs->phys.port_number))
916 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_GROUP,
917 attrs->phys.port_number))
919 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_SUBPORT_NUMBER,
920 attrs->phys.split_subport_number))
929 static int devlink_port_fn_hw_addr_fill(const struct devlink_ops *ops,
930 struct devlink_port *port,
932 struct netlink_ext_ack *extack,
935 u8 hw_addr[MAX_ADDR_LEN];
939 if (!ops->port_function_hw_addr_get)
942 err = ops->port_function_hw_addr_get(port, hw_addr, &hw_addr_len,
945 if (err == -EOPNOTSUPP)
949 err = nla_put(msg, DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR, hw_addr_len, hw_addr);
956 static int devlink_nl_rate_fill(struct sk_buff *msg,
957 struct devlink_rate *devlink_rate,
958 enum devlink_command cmd, u32 portid, u32 seq,
959 int flags, struct netlink_ext_ack *extack)
961 struct devlink *devlink = devlink_rate->devlink;
964 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
968 if (devlink_nl_put_handle(msg, devlink))
969 goto nla_put_failure;
971 if (nla_put_u16(msg, DEVLINK_ATTR_RATE_TYPE, devlink_rate->type))
972 goto nla_put_failure;
974 if (devlink_rate_is_leaf(devlink_rate)) {
975 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
976 devlink_rate->devlink_port->index))
977 goto nla_put_failure;
978 } else if (devlink_rate_is_node(devlink_rate)) {
979 if (nla_put_string(msg, DEVLINK_ATTR_RATE_NODE_NAME,
981 goto nla_put_failure;
984 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_RATE_TX_SHARE,
985 devlink_rate->tx_share, DEVLINK_ATTR_PAD))
986 goto nla_put_failure;
988 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_RATE_TX_MAX,
989 devlink_rate->tx_max, DEVLINK_ATTR_PAD))
990 goto nla_put_failure;
992 if (devlink_rate->parent)
993 if (nla_put_string(msg, DEVLINK_ATTR_RATE_PARENT_NODE_NAME,
994 devlink_rate->parent->name))
995 goto nla_put_failure;
997 genlmsg_end(msg, hdr);
1001 genlmsg_cancel(msg, hdr);
1006 devlink_port_fn_state_valid(enum devlink_port_fn_state state)
1008 return state == DEVLINK_PORT_FN_STATE_INACTIVE ||
1009 state == DEVLINK_PORT_FN_STATE_ACTIVE;
1013 devlink_port_fn_opstate_valid(enum devlink_port_fn_opstate opstate)
1015 return opstate == DEVLINK_PORT_FN_OPSTATE_DETACHED ||
1016 opstate == DEVLINK_PORT_FN_OPSTATE_ATTACHED;
1019 static int devlink_port_fn_state_fill(const struct devlink_ops *ops,
1020 struct devlink_port *port,
1021 struct sk_buff *msg,
1022 struct netlink_ext_ack *extack,
1025 enum devlink_port_fn_opstate opstate;
1026 enum devlink_port_fn_state state;
1029 if (!ops->port_fn_state_get)
1032 err = ops->port_fn_state_get(port, &state, &opstate, extack);
1034 if (err == -EOPNOTSUPP)
1038 if (!devlink_port_fn_state_valid(state)) {
1040 NL_SET_ERR_MSG_MOD(extack, "Invalid state read from driver");
1043 if (!devlink_port_fn_opstate_valid(opstate)) {
1045 NL_SET_ERR_MSG_MOD(extack,
1046 "Invalid operational state read from driver");
1049 if (nla_put_u8(msg, DEVLINK_PORT_FN_ATTR_STATE, state) ||
1050 nla_put_u8(msg, DEVLINK_PORT_FN_ATTR_OPSTATE, opstate))
1052 *msg_updated = true;
1057 devlink_nl_port_function_attrs_put(struct sk_buff *msg, struct devlink_port *port,
1058 struct netlink_ext_ack *extack)
1060 const struct devlink_ops *ops;
1061 struct nlattr *function_attr;
1062 bool msg_updated = false;
1065 function_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PORT_FUNCTION);
1069 ops = port->devlink->ops;
1070 err = devlink_port_fn_hw_addr_fill(ops, port, msg, extack,
1074 err = devlink_port_fn_state_fill(ops, port, msg, extack, &msg_updated);
1076 if (err || !msg_updated)
1077 nla_nest_cancel(msg, function_attr);
1079 nla_nest_end(msg, function_attr);
1083 static int devlink_nl_port_fill(struct sk_buff *msg,
1084 struct devlink_port *devlink_port,
1085 enum devlink_command cmd, u32 portid, u32 seq,
1086 int flags, struct netlink_ext_ack *extack)
1088 struct devlink *devlink = devlink_port->devlink;
1091 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1095 if (devlink_nl_put_handle(msg, devlink))
1096 goto nla_put_failure;
1097 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
1098 goto nla_put_failure;
1100 /* Hold rtnl lock while accessing port's netdev attributes. */
1102 spin_lock_bh(&devlink_port->type_lock);
1103 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_TYPE, devlink_port->type))
1104 goto nla_put_failure_type_locked;
1105 if (devlink_port->desired_type != DEVLINK_PORT_TYPE_NOTSET &&
1106 nla_put_u16(msg, DEVLINK_ATTR_PORT_DESIRED_TYPE,
1107 devlink_port->desired_type))
1108 goto nla_put_failure_type_locked;
1109 if (devlink_port->type == DEVLINK_PORT_TYPE_ETH) {
1110 struct net *net = devlink_net(devlink_port->devlink);
1111 struct net_device *netdev = devlink_port->type_dev;
1113 if (netdev && net_eq(net, dev_net(netdev)) &&
1114 (nla_put_u32(msg, DEVLINK_ATTR_PORT_NETDEV_IFINDEX,
1116 nla_put_string(msg, DEVLINK_ATTR_PORT_NETDEV_NAME,
1118 goto nla_put_failure_type_locked;
1120 if (devlink_port->type == DEVLINK_PORT_TYPE_IB) {
1121 struct ib_device *ibdev = devlink_port->type_dev;
1124 nla_put_string(msg, DEVLINK_ATTR_PORT_IBDEV_NAME,
1126 goto nla_put_failure_type_locked;
1128 spin_unlock_bh(&devlink_port->type_lock);
1130 if (devlink_nl_port_attrs_put(msg, devlink_port))
1131 goto nla_put_failure;
1132 if (devlink_nl_port_function_attrs_put(msg, devlink_port, extack))
1133 goto nla_put_failure;
1135 genlmsg_end(msg, hdr);
1138 nla_put_failure_type_locked:
1139 spin_unlock_bh(&devlink_port->type_lock);
1142 genlmsg_cancel(msg, hdr);
1146 static void devlink_port_notify(struct devlink_port *devlink_port,
1147 enum devlink_command cmd)
1149 struct devlink *devlink = devlink_port->devlink;
1150 struct sk_buff *msg;
1153 WARN_ON(cmd != DEVLINK_CMD_PORT_NEW && cmd != DEVLINK_CMD_PORT_DEL);
1155 if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
1158 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1162 err = devlink_nl_port_fill(msg, devlink_port, cmd, 0, 0, 0, NULL);
1168 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
1169 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
1172 static void devlink_rate_notify(struct devlink_rate *devlink_rate,
1173 enum devlink_command cmd)
1175 struct devlink *devlink = devlink_rate->devlink;
1176 struct sk_buff *msg;
1179 WARN_ON(cmd != DEVLINK_CMD_RATE_NEW && cmd != DEVLINK_CMD_RATE_DEL);
1181 if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
1184 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1188 err = devlink_nl_rate_fill(msg, devlink_rate, cmd, 0, 0, 0, NULL);
1194 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
1195 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
1198 static int devlink_nl_cmd_rate_get_dumpit(struct sk_buff *msg,
1199 struct netlink_callback *cb)
1201 struct devlink_rate *devlink_rate;
1202 struct devlink *devlink;
1203 int start = cb->args[0];
1204 unsigned long index;
1208 mutex_lock(&devlink_mutex);
1209 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
1210 if (!devlink_try_get(devlink))
1213 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
1216 mutex_lock(&devlink->lock);
1217 list_for_each_entry(devlink_rate, &devlink->rate_list, list) {
1218 enum devlink_command cmd = DEVLINK_CMD_RATE_NEW;
1219 u32 id = NETLINK_CB(cb->skb).portid;
1225 err = devlink_nl_rate_fill(msg, devlink_rate, cmd, id,
1229 mutex_unlock(&devlink->lock);
1230 devlink_put(devlink);
1235 mutex_unlock(&devlink->lock);
1237 devlink_put(devlink);
1240 mutex_unlock(&devlink_mutex);
1241 if (err != -EMSGSIZE)
1248 static int devlink_nl_cmd_rate_get_doit(struct sk_buff *skb,
1249 struct genl_info *info)
1251 struct devlink_rate *devlink_rate = info->user_ptr[1];
1252 struct sk_buff *msg;
1255 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1259 err = devlink_nl_rate_fill(msg, devlink_rate, DEVLINK_CMD_RATE_NEW,
1260 info->snd_portid, info->snd_seq, 0,
1267 return genlmsg_reply(msg, info);
1271 devlink_rate_is_parent_node(struct devlink_rate *devlink_rate,
1272 struct devlink_rate *parent)
1275 if (parent == devlink_rate)
1277 parent = parent->parent;
1282 static int devlink_nl_cmd_get_doit(struct sk_buff *skb, struct genl_info *info)
1284 struct devlink *devlink = info->user_ptr[0];
1285 struct sk_buff *msg;
1288 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1292 err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
1293 info->snd_portid, info->snd_seq, 0);
1299 return genlmsg_reply(msg, info);
1302 static int devlink_nl_cmd_get_dumpit(struct sk_buff *msg,
1303 struct netlink_callback *cb)
1305 struct devlink *devlink;
1306 int start = cb->args[0];
1307 unsigned long index;
1311 mutex_lock(&devlink_mutex);
1312 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
1313 if (!devlink_try_get(devlink))
1316 if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) {
1317 devlink_put(devlink);
1323 devlink_put(devlink);
1327 err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
1328 NETLINK_CB(cb->skb).portid,
1329 cb->nlh->nlmsg_seq, NLM_F_MULTI);
1330 devlink_put(devlink);
1336 mutex_unlock(&devlink_mutex);
1342 static int devlink_nl_cmd_port_get_doit(struct sk_buff *skb,
1343 struct genl_info *info)
1345 struct devlink_port *devlink_port = info->user_ptr[1];
1346 struct sk_buff *msg;
1349 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1353 err = devlink_nl_port_fill(msg, devlink_port, DEVLINK_CMD_PORT_NEW,
1354 info->snd_portid, info->snd_seq, 0,
1361 return genlmsg_reply(msg, info);
1364 static int devlink_nl_cmd_port_get_dumpit(struct sk_buff *msg,
1365 struct netlink_callback *cb)
1367 struct devlink *devlink;
1368 struct devlink_port *devlink_port;
1369 int start = cb->args[0];
1370 unsigned long index;
1374 mutex_lock(&devlink_mutex);
1375 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
1376 if (!devlink_try_get(devlink))
1379 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
1382 mutex_lock(&devlink->lock);
1383 list_for_each_entry(devlink_port, &devlink->port_list, list) {
1388 err = devlink_nl_port_fill(msg, devlink_port,
1390 NETLINK_CB(cb->skb).portid,
1392 NLM_F_MULTI, cb->extack);
1394 mutex_unlock(&devlink->lock);
1395 devlink_put(devlink);
1400 mutex_unlock(&devlink->lock);
1402 devlink_put(devlink);
1405 mutex_unlock(&devlink_mutex);
1411 static int devlink_port_type_set(struct devlink_port *devlink_port,
1412 enum devlink_port_type port_type)
1417 if (!devlink_port->devlink->ops->port_type_set)
1420 if (port_type == devlink_port->type)
1423 err = devlink_port->devlink->ops->port_type_set(devlink_port,
1428 devlink_port->desired_type = port_type;
1429 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
1433 static int devlink_port_function_hw_addr_set(struct devlink_port *port,
1434 const struct nlattr *attr,
1435 struct netlink_ext_ack *extack)
1437 const struct devlink_ops *ops = port->devlink->ops;
1441 hw_addr = nla_data(attr);
1442 hw_addr_len = nla_len(attr);
1443 if (hw_addr_len > MAX_ADDR_LEN) {
1444 NL_SET_ERR_MSG_MOD(extack, "Port function hardware address too long");
1447 if (port->type == DEVLINK_PORT_TYPE_ETH) {
1448 if (hw_addr_len != ETH_ALEN) {
1449 NL_SET_ERR_MSG_MOD(extack, "Address must be 6 bytes for Ethernet device");
1452 if (!is_unicast_ether_addr(hw_addr)) {
1453 NL_SET_ERR_MSG_MOD(extack, "Non-unicast hardware address unsupported");
1458 if (!ops->port_function_hw_addr_set) {
1459 NL_SET_ERR_MSG_MOD(extack, "Port doesn't support function attributes");
1463 return ops->port_function_hw_addr_set(port, hw_addr, hw_addr_len,
1467 static int devlink_port_fn_state_set(struct devlink_port *port,
1468 const struct nlattr *attr,
1469 struct netlink_ext_ack *extack)
1471 enum devlink_port_fn_state state;
1472 const struct devlink_ops *ops;
1474 state = nla_get_u8(attr);
1475 ops = port->devlink->ops;
1476 if (!ops->port_fn_state_set) {
1477 NL_SET_ERR_MSG_MOD(extack,
1478 "Function does not support state setting");
1481 return ops->port_fn_state_set(port, state, extack);
1484 static int devlink_port_function_set(struct devlink_port *port,
1485 const struct nlattr *attr,
1486 struct netlink_ext_ack *extack)
1488 struct nlattr *tb[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1];
1491 err = nla_parse_nested(tb, DEVLINK_PORT_FUNCTION_ATTR_MAX, attr,
1492 devlink_function_nl_policy, extack);
1494 NL_SET_ERR_MSG_MOD(extack, "Fail to parse port function attributes");
1498 attr = tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR];
1500 err = devlink_port_function_hw_addr_set(port, attr, extack);
1504 /* Keep this as the last function attribute set, so that when
1505 * multiple port function attributes are set along with state,
1506 * Those can be applied first before activating the state.
1508 attr = tb[DEVLINK_PORT_FN_ATTR_STATE];
1510 err = devlink_port_fn_state_set(port, attr, extack);
1513 devlink_port_notify(port, DEVLINK_CMD_PORT_NEW);
1517 static int devlink_nl_cmd_port_set_doit(struct sk_buff *skb,
1518 struct genl_info *info)
1520 struct devlink_port *devlink_port = info->user_ptr[1];
1523 if (info->attrs[DEVLINK_ATTR_PORT_TYPE]) {
1524 enum devlink_port_type port_type;
1526 port_type = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_TYPE]);
1527 err = devlink_port_type_set(devlink_port, port_type);
1532 if (info->attrs[DEVLINK_ATTR_PORT_FUNCTION]) {
1533 struct nlattr *attr = info->attrs[DEVLINK_ATTR_PORT_FUNCTION];
1534 struct netlink_ext_ack *extack = info->extack;
1536 err = devlink_port_function_set(devlink_port, attr, extack);
1544 static int devlink_port_split(struct devlink *devlink, u32 port_index,
1545 u32 count, struct netlink_ext_ack *extack)
1548 if (devlink->ops->port_split)
1549 return devlink->ops->port_split(devlink, port_index, count,
1554 static int devlink_nl_cmd_port_split_doit(struct sk_buff *skb,
1555 struct genl_info *info)
1557 struct devlink *devlink = info->user_ptr[0];
1558 struct devlink_port *devlink_port;
1562 if (!info->attrs[DEVLINK_ATTR_PORT_INDEX] ||
1563 !info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT])
1566 devlink_port = devlink_port_get_from_info(devlink, info);
1567 port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
1568 count = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT]);
1570 if (IS_ERR(devlink_port))
1573 if (!devlink_port->attrs.splittable) {
1574 /* Split ports cannot be split. */
1575 if (devlink_port->attrs.split)
1576 NL_SET_ERR_MSG_MOD(info->extack, "Port cannot be split further");
1578 NL_SET_ERR_MSG_MOD(info->extack, "Port cannot be split");
1582 if (count < 2 || !is_power_of_2(count) || count > devlink_port->attrs.lanes) {
1583 NL_SET_ERR_MSG_MOD(info->extack, "Invalid split count");
1587 return devlink_port_split(devlink, port_index, count, info->extack);
1590 static int devlink_port_unsplit(struct devlink *devlink, u32 port_index,
1591 struct netlink_ext_ack *extack)
1594 if (devlink->ops->port_unsplit)
1595 return devlink->ops->port_unsplit(devlink, port_index, extack);
1599 static int devlink_nl_cmd_port_unsplit_doit(struct sk_buff *skb,
1600 struct genl_info *info)
1602 struct devlink *devlink = info->user_ptr[0];
1605 if (!info->attrs[DEVLINK_ATTR_PORT_INDEX])
1608 port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
1609 return devlink_port_unsplit(devlink, port_index, info->extack);
1612 static int devlink_port_new_notifiy(struct devlink *devlink,
1613 unsigned int port_index,
1614 struct genl_info *info)
1616 struct devlink_port *devlink_port;
1617 struct sk_buff *msg;
1620 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1624 mutex_lock(&devlink->lock);
1625 devlink_port = devlink_port_get_by_index(devlink, port_index);
1626 if (!devlink_port) {
1631 err = devlink_nl_port_fill(msg, devlink_port, DEVLINK_CMD_NEW,
1632 info->snd_portid, info->snd_seq, 0, NULL);
1636 err = genlmsg_reply(msg, info);
1637 mutex_unlock(&devlink->lock);
1641 mutex_unlock(&devlink->lock);
1646 static int devlink_nl_cmd_port_new_doit(struct sk_buff *skb,
1647 struct genl_info *info)
1649 struct netlink_ext_ack *extack = info->extack;
1650 struct devlink_port_new_attrs new_attrs = {};
1651 struct devlink *devlink = info->user_ptr[0];
1652 unsigned int new_port_index;
1655 if (!devlink->ops->port_new || !devlink->ops->port_del)
1658 if (!info->attrs[DEVLINK_ATTR_PORT_FLAVOUR] ||
1659 !info->attrs[DEVLINK_ATTR_PORT_PCI_PF_NUMBER]) {
1660 NL_SET_ERR_MSG_MOD(extack, "Port flavour or PCI PF are not specified");
1663 new_attrs.flavour = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_FLAVOUR]);
1665 nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_PCI_PF_NUMBER]);
1667 if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
1668 /* Port index of the new port being created by driver. */
1669 new_attrs.port_index =
1670 nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
1671 new_attrs.port_index_valid = true;
1673 if (info->attrs[DEVLINK_ATTR_PORT_CONTROLLER_NUMBER]) {
1674 new_attrs.controller =
1675 nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_CONTROLLER_NUMBER]);
1676 new_attrs.controller_valid = true;
1678 if (new_attrs.flavour == DEVLINK_PORT_FLAVOUR_PCI_SF &&
1679 info->attrs[DEVLINK_ATTR_PORT_PCI_SF_NUMBER]) {
1680 new_attrs.sfnum = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_PCI_SF_NUMBER]);
1681 new_attrs.sfnum_valid = true;
1684 err = devlink->ops->port_new(devlink, &new_attrs, extack,
1689 err = devlink_port_new_notifiy(devlink, new_port_index, info);
1690 if (err && err != -ENODEV) {
1691 /* Fail to send the response; destroy newly created port. */
1692 devlink->ops->port_del(devlink, new_port_index, extack);
1697 static int devlink_nl_cmd_port_del_doit(struct sk_buff *skb,
1698 struct genl_info *info)
1700 struct netlink_ext_ack *extack = info->extack;
1701 struct devlink *devlink = info->user_ptr[0];
1702 unsigned int port_index;
1704 if (!devlink->ops->port_del)
1707 if (!info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
1708 NL_SET_ERR_MSG_MOD(extack, "Port index is not specified");
1711 port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
1713 return devlink->ops->port_del(devlink, port_index, extack);
1717 devlink_nl_rate_parent_node_set(struct devlink_rate *devlink_rate,
1718 struct genl_info *info,
1719 struct nlattr *nla_parent)
1721 struct devlink *devlink = devlink_rate->devlink;
1722 const char *parent_name = nla_data(nla_parent);
1723 const struct devlink_ops *ops = devlink->ops;
1724 size_t len = strlen(parent_name);
1725 struct devlink_rate *parent;
1726 int err = -EOPNOTSUPP;
1728 parent = devlink_rate->parent;
1729 if (parent && len) {
1730 NL_SET_ERR_MSG_MOD(info->extack, "Rate object already has parent.");
1732 } else if (parent && !len) {
1733 if (devlink_rate_is_leaf(devlink_rate))
1734 err = ops->rate_leaf_parent_set(devlink_rate, NULL,
1735 devlink_rate->priv, NULL,
1737 else if (devlink_rate_is_node(devlink_rate))
1738 err = ops->rate_node_parent_set(devlink_rate, NULL,
1739 devlink_rate->priv, NULL,
1744 refcount_dec(&parent->refcnt);
1745 devlink_rate->parent = NULL;
1746 } else if (!parent && len) {
1747 parent = devlink_rate_node_get_by_name(devlink, parent_name);
1751 if (parent == devlink_rate) {
1752 NL_SET_ERR_MSG_MOD(info->extack, "Parent to self is not allowed");
1756 if (devlink_rate_is_node(devlink_rate) &&
1757 devlink_rate_is_parent_node(devlink_rate, parent->parent)) {
1758 NL_SET_ERR_MSG_MOD(info->extack, "Node is already a parent of parent node.");
1762 if (devlink_rate_is_leaf(devlink_rate))
1763 err = ops->rate_leaf_parent_set(devlink_rate, parent,
1764 devlink_rate->priv, parent->priv,
1766 else if (devlink_rate_is_node(devlink_rate))
1767 err = ops->rate_node_parent_set(devlink_rate, parent,
1768 devlink_rate->priv, parent->priv,
1773 refcount_inc(&parent->refcnt);
1774 devlink_rate->parent = parent;
1780 static int devlink_nl_rate_set(struct devlink_rate *devlink_rate,
1781 const struct devlink_ops *ops,
1782 struct genl_info *info)
1784 struct nlattr *nla_parent, **attrs = info->attrs;
1785 int err = -EOPNOTSUPP;
1788 if (attrs[DEVLINK_ATTR_RATE_TX_SHARE]) {
1789 rate = nla_get_u64(attrs[DEVLINK_ATTR_RATE_TX_SHARE]);
1790 if (devlink_rate_is_leaf(devlink_rate))
1791 err = ops->rate_leaf_tx_share_set(devlink_rate, devlink_rate->priv,
1792 rate, info->extack);
1793 else if (devlink_rate_is_node(devlink_rate))
1794 err = ops->rate_node_tx_share_set(devlink_rate, devlink_rate->priv,
1795 rate, info->extack);
1798 devlink_rate->tx_share = rate;
1801 if (attrs[DEVLINK_ATTR_RATE_TX_MAX]) {
1802 rate = nla_get_u64(attrs[DEVLINK_ATTR_RATE_TX_MAX]);
1803 if (devlink_rate_is_leaf(devlink_rate))
1804 err = ops->rate_leaf_tx_max_set(devlink_rate, devlink_rate->priv,
1805 rate, info->extack);
1806 else if (devlink_rate_is_node(devlink_rate))
1807 err = ops->rate_node_tx_max_set(devlink_rate, devlink_rate->priv,
1808 rate, info->extack);
1811 devlink_rate->tx_max = rate;
1814 nla_parent = attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME];
1816 err = devlink_nl_rate_parent_node_set(devlink_rate, info,
1825 static bool devlink_rate_set_ops_supported(const struct devlink_ops *ops,
1826 struct genl_info *info,
1827 enum devlink_rate_type type)
1829 struct nlattr **attrs = info->attrs;
1831 if (type == DEVLINK_RATE_TYPE_LEAF) {
1832 if (attrs[DEVLINK_ATTR_RATE_TX_SHARE] && !ops->rate_leaf_tx_share_set) {
1833 NL_SET_ERR_MSG_MOD(info->extack, "TX share set isn't supported for the leafs");
1836 if (attrs[DEVLINK_ATTR_RATE_TX_MAX] && !ops->rate_leaf_tx_max_set) {
1837 NL_SET_ERR_MSG_MOD(info->extack, "TX max set isn't supported for the leafs");
1840 if (attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME] &&
1841 !ops->rate_leaf_parent_set) {
1842 NL_SET_ERR_MSG_MOD(info->extack, "Parent set isn't supported for the leafs");
1845 } else if (type == DEVLINK_RATE_TYPE_NODE) {
1846 if (attrs[DEVLINK_ATTR_RATE_TX_SHARE] && !ops->rate_node_tx_share_set) {
1847 NL_SET_ERR_MSG_MOD(info->extack, "TX share set isn't supported for the nodes");
1850 if (attrs[DEVLINK_ATTR_RATE_TX_MAX] && !ops->rate_node_tx_max_set) {
1851 NL_SET_ERR_MSG_MOD(info->extack, "TX max set isn't supported for the nodes");
1854 if (attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME] &&
1855 !ops->rate_node_parent_set) {
1856 NL_SET_ERR_MSG_MOD(info->extack, "Parent set isn't supported for the nodes");
1860 WARN(1, "Unknown type of rate object");
1867 static int devlink_nl_cmd_rate_set_doit(struct sk_buff *skb,
1868 struct genl_info *info)
1870 struct devlink_rate *devlink_rate = info->user_ptr[1];
1871 struct devlink *devlink = devlink_rate->devlink;
1872 const struct devlink_ops *ops = devlink->ops;
1875 if (!ops || !devlink_rate_set_ops_supported(ops, info, devlink_rate->type))
1878 err = devlink_nl_rate_set(devlink_rate, ops, info);
1881 devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_NEW);
1885 static int devlink_nl_cmd_rate_new_doit(struct sk_buff *skb,
1886 struct genl_info *info)
1888 struct devlink *devlink = info->user_ptr[0];
1889 struct devlink_rate *rate_node;
1890 const struct devlink_ops *ops;
1894 if (!ops || !ops->rate_node_new || !ops->rate_node_del) {
1895 NL_SET_ERR_MSG_MOD(info->extack, "Rate nodes aren't supported");
1899 if (!devlink_rate_set_ops_supported(ops, info, DEVLINK_RATE_TYPE_NODE))
1902 rate_node = devlink_rate_node_get_from_attrs(devlink, info->attrs);
1903 if (!IS_ERR(rate_node))
1905 else if (rate_node == ERR_PTR(-EINVAL))
1908 rate_node = kzalloc(sizeof(*rate_node), GFP_KERNEL);
1912 rate_node->devlink = devlink;
1913 rate_node->type = DEVLINK_RATE_TYPE_NODE;
1914 rate_node->name = nla_strdup(info->attrs[DEVLINK_ATTR_RATE_NODE_NAME], GFP_KERNEL);
1915 if (!rate_node->name) {
1920 err = ops->rate_node_new(rate_node, &rate_node->priv, info->extack);
1924 err = devlink_nl_rate_set(rate_node, ops, info);
1928 refcount_set(&rate_node->refcnt, 1);
1929 list_add(&rate_node->list, &devlink->rate_list);
1930 devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_NEW);
1934 ops->rate_node_del(rate_node, rate_node->priv, info->extack);
1936 kfree(rate_node->name);
1942 static int devlink_nl_cmd_rate_del_doit(struct sk_buff *skb,
1943 struct genl_info *info)
1945 struct devlink_rate *rate_node = info->user_ptr[1];
1946 struct devlink *devlink = rate_node->devlink;
1947 const struct devlink_ops *ops = devlink->ops;
1950 if (refcount_read(&rate_node->refcnt) > 1) {
1951 NL_SET_ERR_MSG_MOD(info->extack, "Node has children. Cannot delete node.");
1955 devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_DEL);
1956 err = ops->rate_node_del(rate_node, rate_node->priv, info->extack);
1957 if (rate_node->parent)
1958 refcount_dec(&rate_node->parent->refcnt);
1959 list_del(&rate_node->list);
1960 kfree(rate_node->name);
1965 static int devlink_nl_sb_fill(struct sk_buff *msg, struct devlink *devlink,
1966 struct devlink_sb *devlink_sb,
1967 enum devlink_command cmd, u32 portid,
1972 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1976 if (devlink_nl_put_handle(msg, devlink))
1977 goto nla_put_failure;
1978 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
1979 goto nla_put_failure;
1980 if (nla_put_u32(msg, DEVLINK_ATTR_SB_SIZE, devlink_sb->size))
1981 goto nla_put_failure;
1982 if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_POOL_COUNT,
1983 devlink_sb->ingress_pools_count))
1984 goto nla_put_failure;
1985 if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_POOL_COUNT,
1986 devlink_sb->egress_pools_count))
1987 goto nla_put_failure;
1988 if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_TC_COUNT,
1989 devlink_sb->ingress_tc_count))
1990 goto nla_put_failure;
1991 if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_TC_COUNT,
1992 devlink_sb->egress_tc_count))
1993 goto nla_put_failure;
1995 genlmsg_end(msg, hdr);
1999 genlmsg_cancel(msg, hdr);
2003 static int devlink_nl_cmd_sb_get_doit(struct sk_buff *skb,
2004 struct genl_info *info)
2006 struct devlink *devlink = info->user_ptr[0];
2007 struct devlink_sb *devlink_sb;
2008 struct sk_buff *msg;
2011 devlink_sb = devlink_sb_get_from_info(devlink, info);
2012 if (IS_ERR(devlink_sb))
2013 return PTR_ERR(devlink_sb);
2015 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2019 err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
2021 info->snd_portid, info->snd_seq, 0);
2027 return genlmsg_reply(msg, info);
2030 static int devlink_nl_cmd_sb_get_dumpit(struct sk_buff *msg,
2031 struct netlink_callback *cb)
2033 struct devlink *devlink;
2034 struct devlink_sb *devlink_sb;
2035 int start = cb->args[0];
2036 unsigned long index;
2040 mutex_lock(&devlink_mutex);
2041 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
2042 if (!devlink_try_get(devlink))
2045 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
2048 mutex_lock(&devlink->lock);
2049 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
2054 err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
2056 NETLINK_CB(cb->skb).portid,
2060 mutex_unlock(&devlink->lock);
2061 devlink_put(devlink);
2066 mutex_unlock(&devlink->lock);
2068 devlink_put(devlink);
2071 mutex_unlock(&devlink_mutex);
2077 static int devlink_nl_sb_pool_fill(struct sk_buff *msg, struct devlink *devlink,
2078 struct devlink_sb *devlink_sb,
2079 u16 pool_index, enum devlink_command cmd,
2080 u32 portid, u32 seq, int flags)
2082 struct devlink_sb_pool_info pool_info;
2086 err = devlink->ops->sb_pool_get(devlink, devlink_sb->index,
2087 pool_index, &pool_info);
2091 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
2095 if (devlink_nl_put_handle(msg, devlink))
2096 goto nla_put_failure;
2097 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
2098 goto nla_put_failure;
2099 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
2100 goto nla_put_failure;
2101 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_info.pool_type))
2102 goto nla_put_failure;
2103 if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_SIZE, pool_info.size))
2104 goto nla_put_failure;
2105 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE,
2106 pool_info.threshold_type))
2107 goto nla_put_failure;
2108 if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_CELL_SIZE,
2109 pool_info.cell_size))
2110 goto nla_put_failure;
2112 genlmsg_end(msg, hdr);
2116 genlmsg_cancel(msg, hdr);
2120 static int devlink_nl_cmd_sb_pool_get_doit(struct sk_buff *skb,
2121 struct genl_info *info)
2123 struct devlink *devlink = info->user_ptr[0];
2124 struct devlink_sb *devlink_sb;
2125 struct sk_buff *msg;
2129 devlink_sb = devlink_sb_get_from_info(devlink, info);
2130 if (IS_ERR(devlink_sb))
2131 return PTR_ERR(devlink_sb);
2133 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
2138 if (!devlink->ops->sb_pool_get)
2141 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2145 err = devlink_nl_sb_pool_fill(msg, devlink, devlink_sb, pool_index,
2146 DEVLINK_CMD_SB_POOL_NEW,
2147 info->snd_portid, info->snd_seq, 0);
2153 return genlmsg_reply(msg, info);
2156 static int __sb_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
2157 struct devlink *devlink,
2158 struct devlink_sb *devlink_sb,
2159 u32 portid, u32 seq)
2161 u16 pool_count = devlink_sb_pool_count(devlink_sb);
2165 for (pool_index = 0; pool_index < pool_count; pool_index++) {
2166 if (*p_idx < start) {
2170 err = devlink_nl_sb_pool_fill(msg, devlink,
2173 DEVLINK_CMD_SB_POOL_NEW,
2174 portid, seq, NLM_F_MULTI);
2182 static int devlink_nl_cmd_sb_pool_get_dumpit(struct sk_buff *msg,
2183 struct netlink_callback *cb)
2185 struct devlink *devlink;
2186 struct devlink_sb *devlink_sb;
2187 int start = cb->args[0];
2188 unsigned long index;
2192 mutex_lock(&devlink_mutex);
2193 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
2194 if (!devlink_try_get(devlink))
2197 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
2198 !devlink->ops->sb_pool_get)
2201 mutex_lock(&devlink->lock);
2202 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
2203 err = __sb_pool_get_dumpit(msg, start, &idx, devlink,
2205 NETLINK_CB(cb->skb).portid,
2206 cb->nlh->nlmsg_seq);
2207 if (err == -EOPNOTSUPP) {
2210 mutex_unlock(&devlink->lock);
2211 devlink_put(devlink);
2215 mutex_unlock(&devlink->lock);
2217 devlink_put(devlink);
2220 mutex_unlock(&devlink_mutex);
2222 if (err != -EMSGSIZE)
2229 static int devlink_sb_pool_set(struct devlink *devlink, unsigned int sb_index,
2230 u16 pool_index, u32 size,
2231 enum devlink_sb_threshold_type threshold_type,
2232 struct netlink_ext_ack *extack)
2235 const struct devlink_ops *ops = devlink->ops;
2237 if (ops->sb_pool_set)
2238 return ops->sb_pool_set(devlink, sb_index, pool_index,
2239 size, threshold_type, extack);
2243 static int devlink_nl_cmd_sb_pool_set_doit(struct sk_buff *skb,
2244 struct genl_info *info)
2246 struct devlink *devlink = info->user_ptr[0];
2247 enum devlink_sb_threshold_type threshold_type;
2248 struct devlink_sb *devlink_sb;
2253 devlink_sb = devlink_sb_get_from_info(devlink, info);
2254 if (IS_ERR(devlink_sb))
2255 return PTR_ERR(devlink_sb);
2257 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
2262 err = devlink_sb_th_type_get_from_info(info, &threshold_type);
2266 if (!info->attrs[DEVLINK_ATTR_SB_POOL_SIZE])
2269 size = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_POOL_SIZE]);
2270 return devlink_sb_pool_set(devlink, devlink_sb->index,
2271 pool_index, size, threshold_type,
2275 static int devlink_nl_sb_port_pool_fill(struct sk_buff *msg,
2276 struct devlink *devlink,
2277 struct devlink_port *devlink_port,
2278 struct devlink_sb *devlink_sb,
2280 enum devlink_command cmd,
2281 u32 portid, u32 seq, int flags)
2283 const struct devlink_ops *ops = devlink->ops;
2288 err = ops->sb_port_pool_get(devlink_port, devlink_sb->index,
2289 pool_index, &threshold);
2293 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
2297 if (devlink_nl_put_handle(msg, devlink))
2298 goto nla_put_failure;
2299 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
2300 goto nla_put_failure;
2301 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
2302 goto nla_put_failure;
2303 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
2304 goto nla_put_failure;
2305 if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
2306 goto nla_put_failure;
2308 if (ops->sb_occ_port_pool_get) {
2312 err = ops->sb_occ_port_pool_get(devlink_port, devlink_sb->index,
2313 pool_index, &cur, &max);
2314 if (err && err != -EOPNOTSUPP)
2315 goto sb_occ_get_failure;
2317 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
2318 goto nla_put_failure;
2319 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
2320 goto nla_put_failure;
2324 genlmsg_end(msg, hdr);
2330 genlmsg_cancel(msg, hdr);
2334 static int devlink_nl_cmd_sb_port_pool_get_doit(struct sk_buff *skb,
2335 struct genl_info *info)
2337 struct devlink_port *devlink_port = info->user_ptr[1];
2338 struct devlink *devlink = devlink_port->devlink;
2339 struct devlink_sb *devlink_sb;
2340 struct sk_buff *msg;
2344 devlink_sb = devlink_sb_get_from_info(devlink, info);
2345 if (IS_ERR(devlink_sb))
2346 return PTR_ERR(devlink_sb);
2348 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
2353 if (!devlink->ops->sb_port_pool_get)
2356 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2360 err = devlink_nl_sb_port_pool_fill(msg, devlink, devlink_port,
2361 devlink_sb, pool_index,
2362 DEVLINK_CMD_SB_PORT_POOL_NEW,
2363 info->snd_portid, info->snd_seq, 0);
2369 return genlmsg_reply(msg, info);
2372 static int __sb_port_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
2373 struct devlink *devlink,
2374 struct devlink_sb *devlink_sb,
2375 u32 portid, u32 seq)
2377 struct devlink_port *devlink_port;
2378 u16 pool_count = devlink_sb_pool_count(devlink_sb);
2382 list_for_each_entry(devlink_port, &devlink->port_list, list) {
2383 for (pool_index = 0; pool_index < pool_count; pool_index++) {
2384 if (*p_idx < start) {
2388 err = devlink_nl_sb_port_pool_fill(msg, devlink,
2392 DEVLINK_CMD_SB_PORT_POOL_NEW,
2403 static int devlink_nl_cmd_sb_port_pool_get_dumpit(struct sk_buff *msg,
2404 struct netlink_callback *cb)
2406 struct devlink *devlink;
2407 struct devlink_sb *devlink_sb;
2408 int start = cb->args[0];
2409 unsigned long index;
2413 mutex_lock(&devlink_mutex);
2414 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
2415 if (!devlink_try_get(devlink))
2418 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
2419 !devlink->ops->sb_port_pool_get)
2422 mutex_lock(&devlink->lock);
2423 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
2424 err = __sb_port_pool_get_dumpit(msg, start, &idx,
2425 devlink, devlink_sb,
2426 NETLINK_CB(cb->skb).portid,
2427 cb->nlh->nlmsg_seq);
2428 if (err == -EOPNOTSUPP) {
2431 mutex_unlock(&devlink->lock);
2432 devlink_put(devlink);
2436 mutex_unlock(&devlink->lock);
2438 devlink_put(devlink);
2441 mutex_unlock(&devlink_mutex);
2443 if (err != -EMSGSIZE)
2450 static int devlink_sb_port_pool_set(struct devlink_port *devlink_port,
2451 unsigned int sb_index, u16 pool_index,
2453 struct netlink_ext_ack *extack)
2456 const struct devlink_ops *ops = devlink_port->devlink->ops;
2458 if (ops->sb_port_pool_set)
2459 return ops->sb_port_pool_set(devlink_port, sb_index,
2460 pool_index, threshold, extack);
2464 static int devlink_nl_cmd_sb_port_pool_set_doit(struct sk_buff *skb,
2465 struct genl_info *info)
2467 struct devlink_port *devlink_port = info->user_ptr[1];
2468 struct devlink *devlink = info->user_ptr[0];
2469 struct devlink_sb *devlink_sb;
2474 devlink_sb = devlink_sb_get_from_info(devlink, info);
2475 if (IS_ERR(devlink_sb))
2476 return PTR_ERR(devlink_sb);
2478 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
2483 if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD])
2486 threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
2487 return devlink_sb_port_pool_set(devlink_port, devlink_sb->index,
2488 pool_index, threshold, info->extack);
2492 devlink_nl_sb_tc_pool_bind_fill(struct sk_buff *msg, struct devlink *devlink,
2493 struct devlink_port *devlink_port,
2494 struct devlink_sb *devlink_sb, u16 tc_index,
2495 enum devlink_sb_pool_type pool_type,
2496 enum devlink_command cmd,
2497 u32 portid, u32 seq, int flags)
2499 const struct devlink_ops *ops = devlink->ops;
2505 err = ops->sb_tc_pool_bind_get(devlink_port, devlink_sb->index,
2506 tc_index, pool_type,
2507 &pool_index, &threshold);
2511 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
2515 if (devlink_nl_put_handle(msg, devlink))
2516 goto nla_put_failure;
2517 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
2518 goto nla_put_failure;
2519 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
2520 goto nla_put_failure;
2521 if (nla_put_u16(msg, DEVLINK_ATTR_SB_TC_INDEX, tc_index))
2522 goto nla_put_failure;
2523 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_type))
2524 goto nla_put_failure;
2525 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
2526 goto nla_put_failure;
2527 if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
2528 goto nla_put_failure;
2530 if (ops->sb_occ_tc_port_bind_get) {
2534 err = ops->sb_occ_tc_port_bind_get(devlink_port,
2536 tc_index, pool_type,
2538 if (err && err != -EOPNOTSUPP)
2541 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
2542 goto nla_put_failure;
2543 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
2544 goto nla_put_failure;
2548 genlmsg_end(msg, hdr);
2552 genlmsg_cancel(msg, hdr);
2556 static int devlink_nl_cmd_sb_tc_pool_bind_get_doit(struct sk_buff *skb,
2557 struct genl_info *info)
2559 struct devlink_port *devlink_port = info->user_ptr[1];
2560 struct devlink *devlink = devlink_port->devlink;
2561 struct devlink_sb *devlink_sb;
2562 struct sk_buff *msg;
2563 enum devlink_sb_pool_type pool_type;
2567 devlink_sb = devlink_sb_get_from_info(devlink, info);
2568 if (IS_ERR(devlink_sb))
2569 return PTR_ERR(devlink_sb);
2571 err = devlink_sb_pool_type_get_from_info(info, &pool_type);
2575 err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
2576 pool_type, &tc_index);
2580 if (!devlink->ops->sb_tc_pool_bind_get)
2583 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2587 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink, devlink_port,
2588 devlink_sb, tc_index, pool_type,
2589 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
2597 return genlmsg_reply(msg, info);
2600 static int __sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
2601 int start, int *p_idx,
2602 struct devlink *devlink,
2603 struct devlink_sb *devlink_sb,
2604 u32 portid, u32 seq)
2606 struct devlink_port *devlink_port;
2610 list_for_each_entry(devlink_port, &devlink->port_list, list) {
2612 tc_index < devlink_sb->ingress_tc_count; tc_index++) {
2613 if (*p_idx < start) {
2617 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
2621 DEVLINK_SB_POOL_TYPE_INGRESS,
2622 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
2630 tc_index < devlink_sb->egress_tc_count; tc_index++) {
2631 if (*p_idx < start) {
2635 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
2639 DEVLINK_SB_POOL_TYPE_EGRESS,
2640 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
2652 devlink_nl_cmd_sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
2653 struct netlink_callback *cb)
2655 struct devlink *devlink;
2656 struct devlink_sb *devlink_sb;
2657 int start = cb->args[0];
2658 unsigned long index;
2662 mutex_lock(&devlink_mutex);
2663 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
2664 if (!devlink_try_get(devlink))
2667 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
2668 !devlink->ops->sb_tc_pool_bind_get)
2671 mutex_lock(&devlink->lock);
2672 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
2673 err = __sb_tc_pool_bind_get_dumpit(msg, start, &idx,
2676 NETLINK_CB(cb->skb).portid,
2677 cb->nlh->nlmsg_seq);
2678 if (err == -EOPNOTSUPP) {
2681 mutex_unlock(&devlink->lock);
2682 devlink_put(devlink);
2686 mutex_unlock(&devlink->lock);
2688 devlink_put(devlink);
2691 mutex_unlock(&devlink_mutex);
2693 if (err != -EMSGSIZE)
2700 static int devlink_sb_tc_pool_bind_set(struct devlink_port *devlink_port,
2701 unsigned int sb_index, u16 tc_index,
2702 enum devlink_sb_pool_type pool_type,
2703 u16 pool_index, u32 threshold,
2704 struct netlink_ext_ack *extack)
2707 const struct devlink_ops *ops = devlink_port->devlink->ops;
2709 if (ops->sb_tc_pool_bind_set)
2710 return ops->sb_tc_pool_bind_set(devlink_port, sb_index,
2711 tc_index, pool_type,
2712 pool_index, threshold, extack);
2716 static int devlink_nl_cmd_sb_tc_pool_bind_set_doit(struct sk_buff *skb,
2717 struct genl_info *info)
2719 struct devlink_port *devlink_port = info->user_ptr[1];
2720 struct devlink *devlink = info->user_ptr[0];
2721 enum devlink_sb_pool_type pool_type;
2722 struct devlink_sb *devlink_sb;
2728 devlink_sb = devlink_sb_get_from_info(devlink, info);
2729 if (IS_ERR(devlink_sb))
2730 return PTR_ERR(devlink_sb);
2732 err = devlink_sb_pool_type_get_from_info(info, &pool_type);
2736 err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
2737 pool_type, &tc_index);
2741 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
2746 if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD])
2749 threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
2750 return devlink_sb_tc_pool_bind_set(devlink_port, devlink_sb->index,
2751 tc_index, pool_type,
2752 pool_index, threshold, info->extack);
2755 static int devlink_nl_cmd_sb_occ_snapshot_doit(struct sk_buff *skb,
2756 struct genl_info *info)
2758 struct devlink *devlink = info->user_ptr[0];
2759 const struct devlink_ops *ops = devlink->ops;
2760 struct devlink_sb *devlink_sb;
2762 devlink_sb = devlink_sb_get_from_info(devlink, info);
2763 if (IS_ERR(devlink_sb))
2764 return PTR_ERR(devlink_sb);
2766 if (ops->sb_occ_snapshot)
2767 return ops->sb_occ_snapshot(devlink, devlink_sb->index);
2771 static int devlink_nl_cmd_sb_occ_max_clear_doit(struct sk_buff *skb,
2772 struct genl_info *info)
2774 struct devlink *devlink = info->user_ptr[0];
2775 const struct devlink_ops *ops = devlink->ops;
2776 struct devlink_sb *devlink_sb;
2778 devlink_sb = devlink_sb_get_from_info(devlink, info);
2779 if (IS_ERR(devlink_sb))
2780 return PTR_ERR(devlink_sb);
2782 if (ops->sb_occ_max_clear)
2783 return ops->sb_occ_max_clear(devlink, devlink_sb->index);
2787 static int devlink_nl_eswitch_fill(struct sk_buff *msg, struct devlink *devlink,
2788 enum devlink_command cmd, u32 portid,
2791 const struct devlink_ops *ops = devlink->ops;
2792 enum devlink_eswitch_encap_mode encap_mode;
2798 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
2802 err = devlink_nl_put_handle(msg, devlink);
2804 goto nla_put_failure;
2806 if (ops->eswitch_mode_get) {
2807 err = ops->eswitch_mode_get(devlink, &mode);
2809 goto nla_put_failure;
2810 err = nla_put_u16(msg, DEVLINK_ATTR_ESWITCH_MODE, mode);
2812 goto nla_put_failure;
2815 if (ops->eswitch_inline_mode_get) {
2816 err = ops->eswitch_inline_mode_get(devlink, &inline_mode);
2818 goto nla_put_failure;
2819 err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_INLINE_MODE,
2822 goto nla_put_failure;
2825 if (ops->eswitch_encap_mode_get) {
2826 err = ops->eswitch_encap_mode_get(devlink, &encap_mode);
2828 goto nla_put_failure;
2829 err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_ENCAP_MODE, encap_mode);
2831 goto nla_put_failure;
2834 genlmsg_end(msg, hdr);
2838 genlmsg_cancel(msg, hdr);
2842 static int devlink_nl_cmd_eswitch_get_doit(struct sk_buff *skb,
2843 struct genl_info *info)
2845 struct devlink *devlink = info->user_ptr[0];
2846 struct sk_buff *msg;
2849 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2853 err = devlink_nl_eswitch_fill(msg, devlink, DEVLINK_CMD_ESWITCH_GET,
2854 info->snd_portid, info->snd_seq, 0);
2861 return genlmsg_reply(msg, info);
2864 static int devlink_rate_nodes_check(struct devlink *devlink, u16 mode,
2865 struct netlink_ext_ack *extack)
2867 struct devlink_rate *devlink_rate;
2869 /* Take the lock to sync with devlink_rate_nodes_destroy() */
2870 mutex_lock(&devlink->lock);
2871 list_for_each_entry(devlink_rate, &devlink->rate_list, list)
2872 if (devlink_rate_is_node(devlink_rate)) {
2873 mutex_unlock(&devlink->lock);
2874 NL_SET_ERR_MSG_MOD(extack, "Rate node(s) exists.");
2877 mutex_unlock(&devlink->lock);
2881 static int devlink_nl_cmd_eswitch_set_doit(struct sk_buff *skb,
2882 struct genl_info *info)
2884 struct devlink *devlink = info->user_ptr[0];
2885 const struct devlink_ops *ops = devlink->ops;
2886 enum devlink_eswitch_encap_mode encap_mode;
2891 if (info->attrs[DEVLINK_ATTR_ESWITCH_MODE]) {
2892 if (!ops->eswitch_mode_set)
2894 mode = nla_get_u16(info->attrs[DEVLINK_ATTR_ESWITCH_MODE]);
2895 err = devlink_rate_nodes_check(devlink, mode, info->extack);
2898 err = ops->eswitch_mode_set(devlink, mode, info->extack);
2903 if (info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]) {
2904 if (!ops->eswitch_inline_mode_set)
2906 inline_mode = nla_get_u8(
2907 info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]);
2908 err = ops->eswitch_inline_mode_set(devlink, inline_mode,
2914 if (info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]) {
2915 if (!ops->eswitch_encap_mode_set)
2917 encap_mode = nla_get_u8(info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]);
2918 err = ops->eswitch_encap_mode_set(devlink, encap_mode,
2927 int devlink_dpipe_match_put(struct sk_buff *skb,
2928 struct devlink_dpipe_match *match)
2930 struct devlink_dpipe_header *header = match->header;
2931 struct devlink_dpipe_field *field = &header->fields[match->field_id];
2932 struct nlattr *match_attr;
2934 match_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_MATCH);
2938 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_MATCH_TYPE, match->type) ||
2939 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, match->header_index) ||
2940 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
2941 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
2942 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
2943 goto nla_put_failure;
2945 nla_nest_end(skb, match_attr);
2949 nla_nest_cancel(skb, match_attr);
2952 EXPORT_SYMBOL_GPL(devlink_dpipe_match_put);
2954 static int devlink_dpipe_matches_put(struct devlink_dpipe_table *table,
2955 struct sk_buff *skb)
2957 struct nlattr *matches_attr;
2959 matches_attr = nla_nest_start_noflag(skb,
2960 DEVLINK_ATTR_DPIPE_TABLE_MATCHES);
2964 if (table->table_ops->matches_dump(table->priv, skb))
2965 goto nla_put_failure;
2967 nla_nest_end(skb, matches_attr);
2971 nla_nest_cancel(skb, matches_attr);
2975 int devlink_dpipe_action_put(struct sk_buff *skb,
2976 struct devlink_dpipe_action *action)
2978 struct devlink_dpipe_header *header = action->header;
2979 struct devlink_dpipe_field *field = &header->fields[action->field_id];
2980 struct nlattr *action_attr;
2982 action_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ACTION);
2986 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_ACTION_TYPE, action->type) ||
2987 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, action->header_index) ||
2988 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
2989 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
2990 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
2991 goto nla_put_failure;
2993 nla_nest_end(skb, action_attr);
2997 nla_nest_cancel(skb, action_attr);
3000 EXPORT_SYMBOL_GPL(devlink_dpipe_action_put);
3002 static int devlink_dpipe_actions_put(struct devlink_dpipe_table *table,
3003 struct sk_buff *skb)
3005 struct nlattr *actions_attr;
3007 actions_attr = nla_nest_start_noflag(skb,
3008 DEVLINK_ATTR_DPIPE_TABLE_ACTIONS);
3012 if (table->table_ops->actions_dump(table->priv, skb))
3013 goto nla_put_failure;
3015 nla_nest_end(skb, actions_attr);
3019 nla_nest_cancel(skb, actions_attr);
3023 static int devlink_dpipe_table_put(struct sk_buff *skb,
3024 struct devlink_dpipe_table *table)
3026 struct nlattr *table_attr;
3029 table_size = table->table_ops->size_get(table->priv);
3030 table_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLE);
3034 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_TABLE_NAME, table->name) ||
3035 nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_SIZE, table_size,
3037 goto nla_put_failure;
3038 if (nla_put_u8(skb, DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED,
3039 table->counters_enabled))
3040 goto nla_put_failure;
3042 if (table->resource_valid) {
3043 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_ID,
3044 table->resource_id, DEVLINK_ATTR_PAD) ||
3045 nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_UNITS,
3046 table->resource_units, DEVLINK_ATTR_PAD))
3047 goto nla_put_failure;
3049 if (devlink_dpipe_matches_put(table, skb))
3050 goto nla_put_failure;
3052 if (devlink_dpipe_actions_put(table, skb))
3053 goto nla_put_failure;
3055 nla_nest_end(skb, table_attr);
3059 nla_nest_cancel(skb, table_attr);
3063 static int devlink_dpipe_send_and_alloc_skb(struct sk_buff **pskb,
3064 struct genl_info *info)
3069 err = genlmsg_reply(*pskb, info);
3073 *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
3079 static int devlink_dpipe_tables_fill(struct genl_info *info,
3080 enum devlink_command cmd, int flags,
3081 struct list_head *dpipe_tables,
3082 const char *table_name)
3084 struct devlink *devlink = info->user_ptr[0];
3085 struct devlink_dpipe_table *table;
3086 struct nlattr *tables_attr;
3087 struct sk_buff *skb = NULL;
3088 struct nlmsghdr *nlh;
3094 table = list_first_entry(dpipe_tables,
3095 struct devlink_dpipe_table, list);
3097 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
3101 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
3102 &devlink_nl_family, NLM_F_MULTI, cmd);
3108 if (devlink_nl_put_handle(skb, devlink))
3109 goto nla_put_failure;
3110 tables_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLES);
3112 goto nla_put_failure;
3116 list_for_each_entry_from(table, dpipe_tables, list) {
3118 err = devlink_dpipe_table_put(skb, table);
3126 if (!strcmp(table->name, table_name)) {
3127 err = devlink_dpipe_table_put(skb, table);
3135 nla_nest_end(skb, tables_attr);
3136 genlmsg_end(skb, hdr);
3141 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
3142 NLMSG_DONE, 0, flags | NLM_F_MULTI);
3144 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
3150 return genlmsg_reply(skb, info);
3159 static int devlink_nl_cmd_dpipe_table_get(struct sk_buff *skb,
3160 struct genl_info *info)
3162 struct devlink *devlink = info->user_ptr[0];
3163 const char *table_name = NULL;
3165 if (info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
3166 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
3168 return devlink_dpipe_tables_fill(info, DEVLINK_CMD_DPIPE_TABLE_GET, 0,
3169 &devlink->dpipe_table_list,
3173 static int devlink_dpipe_value_put(struct sk_buff *skb,
3174 struct devlink_dpipe_value *value)
3176 if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE,
3177 value->value_size, value->value))
3180 if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE_MASK,
3181 value->value_size, value->mask))
3183 if (value->mapping_valid)
3184 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_VALUE_MAPPING,
3185 value->mapping_value))
3190 static int devlink_dpipe_action_value_put(struct sk_buff *skb,
3191 struct devlink_dpipe_value *value)
3195 if (devlink_dpipe_action_put(skb, value->action))
3197 if (devlink_dpipe_value_put(skb, value))
3202 static int devlink_dpipe_action_values_put(struct sk_buff *skb,
3203 struct devlink_dpipe_value *values,
3204 unsigned int values_count)
3206 struct nlattr *action_attr;
3210 for (i = 0; i < values_count; i++) {
3211 action_attr = nla_nest_start_noflag(skb,
3212 DEVLINK_ATTR_DPIPE_ACTION_VALUE);
3215 err = devlink_dpipe_action_value_put(skb, &values[i]);
3217 goto err_action_value_put;
3218 nla_nest_end(skb, action_attr);
3222 err_action_value_put:
3223 nla_nest_cancel(skb, action_attr);
3227 static int devlink_dpipe_match_value_put(struct sk_buff *skb,
3228 struct devlink_dpipe_value *value)
3232 if (devlink_dpipe_match_put(skb, value->match))
3234 if (devlink_dpipe_value_put(skb, value))
3239 static int devlink_dpipe_match_values_put(struct sk_buff *skb,
3240 struct devlink_dpipe_value *values,
3241 unsigned int values_count)
3243 struct nlattr *match_attr;
3247 for (i = 0; i < values_count; i++) {
3248 match_attr = nla_nest_start_noflag(skb,
3249 DEVLINK_ATTR_DPIPE_MATCH_VALUE);
3252 err = devlink_dpipe_match_value_put(skb, &values[i]);
3254 goto err_match_value_put;
3255 nla_nest_end(skb, match_attr);
3259 err_match_value_put:
3260 nla_nest_cancel(skb, match_attr);
3264 static int devlink_dpipe_entry_put(struct sk_buff *skb,
3265 struct devlink_dpipe_entry *entry)
3267 struct nlattr *entry_attr, *matches_attr, *actions_attr;
3270 entry_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ENTRY);
3274 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_INDEX, entry->index,
3276 goto nla_put_failure;
3277 if (entry->counter_valid)
3278 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_COUNTER,
3279 entry->counter, DEVLINK_ATTR_PAD))
3280 goto nla_put_failure;
3282 matches_attr = nla_nest_start_noflag(skb,
3283 DEVLINK_ATTR_DPIPE_ENTRY_MATCH_VALUES);
3285 goto nla_put_failure;
3287 err = devlink_dpipe_match_values_put(skb, entry->match_values,
3288 entry->match_values_count);
3290 nla_nest_cancel(skb, matches_attr);
3291 goto err_match_values_put;
3293 nla_nest_end(skb, matches_attr);
3295 actions_attr = nla_nest_start_noflag(skb,
3296 DEVLINK_ATTR_DPIPE_ENTRY_ACTION_VALUES);
3298 goto nla_put_failure;
3300 err = devlink_dpipe_action_values_put(skb, entry->action_values,
3301 entry->action_values_count);
3303 nla_nest_cancel(skb, actions_attr);
3304 goto err_action_values_put;
3306 nla_nest_end(skb, actions_attr);
3308 nla_nest_end(skb, entry_attr);
3313 err_match_values_put:
3314 err_action_values_put:
3315 nla_nest_cancel(skb, entry_attr);
3319 static struct devlink_dpipe_table *
3320 devlink_dpipe_table_find(struct list_head *dpipe_tables,
3321 const char *table_name, struct devlink *devlink)
3323 struct devlink_dpipe_table *table;
3324 list_for_each_entry_rcu(table, dpipe_tables, list,
3325 lockdep_is_held(&devlink->lock)) {
3326 if (!strcmp(table->name, table_name))
3332 int devlink_dpipe_entry_ctx_prepare(struct devlink_dpipe_dump_ctx *dump_ctx)
3334 struct devlink *devlink;
3337 err = devlink_dpipe_send_and_alloc_skb(&dump_ctx->skb,
3342 dump_ctx->hdr = genlmsg_put(dump_ctx->skb,
3343 dump_ctx->info->snd_portid,
3344 dump_ctx->info->snd_seq,
3345 &devlink_nl_family, NLM_F_MULTI,
3348 goto nla_put_failure;
3350 devlink = dump_ctx->info->user_ptr[0];
3351 if (devlink_nl_put_handle(dump_ctx->skb, devlink))
3352 goto nla_put_failure;
3353 dump_ctx->nest = nla_nest_start_noflag(dump_ctx->skb,
3354 DEVLINK_ATTR_DPIPE_ENTRIES);
3355 if (!dump_ctx->nest)
3356 goto nla_put_failure;
3360 nlmsg_free(dump_ctx->skb);
3363 EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_prepare);
3365 int devlink_dpipe_entry_ctx_append(struct devlink_dpipe_dump_ctx *dump_ctx,
3366 struct devlink_dpipe_entry *entry)
3368 return devlink_dpipe_entry_put(dump_ctx->skb, entry);
3370 EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_append);
3372 int devlink_dpipe_entry_ctx_close(struct devlink_dpipe_dump_ctx *dump_ctx)
3374 nla_nest_end(dump_ctx->skb, dump_ctx->nest);
3375 genlmsg_end(dump_ctx->skb, dump_ctx->hdr);
3378 EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_close);
3380 void devlink_dpipe_entry_clear(struct devlink_dpipe_entry *entry)
3383 unsigned int value_count, value_index;
3384 struct devlink_dpipe_value *value;
3386 value = entry->action_values;
3387 value_count = entry->action_values_count;
3388 for (value_index = 0; value_index < value_count; value_index++) {
3389 kfree(value[value_index].value);
3390 kfree(value[value_index].mask);
3393 value = entry->match_values;
3394 value_count = entry->match_values_count;
3395 for (value_index = 0; value_index < value_count; value_index++) {
3396 kfree(value[value_index].value);
3397 kfree(value[value_index].mask);
3400 EXPORT_SYMBOL_GPL(devlink_dpipe_entry_clear);
3402 static int devlink_dpipe_entries_fill(struct genl_info *info,
3403 enum devlink_command cmd, int flags,
3404 struct devlink_dpipe_table *table)
3406 struct devlink_dpipe_dump_ctx dump_ctx;
3407 struct nlmsghdr *nlh;
3410 dump_ctx.skb = NULL;
3412 dump_ctx.info = info;
3414 err = table->table_ops->entries_dump(table->priv,
3415 table->counters_enabled,
3421 nlh = nlmsg_put(dump_ctx.skb, info->snd_portid, info->snd_seq,
3422 NLMSG_DONE, 0, flags | NLM_F_MULTI);
3424 err = devlink_dpipe_send_and_alloc_skb(&dump_ctx.skb, info);
3429 return genlmsg_reply(dump_ctx.skb, info);
3432 static int devlink_nl_cmd_dpipe_entries_get(struct sk_buff *skb,
3433 struct genl_info *info)
3435 struct devlink *devlink = info->user_ptr[0];
3436 struct devlink_dpipe_table *table;
3437 const char *table_name;
3439 if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
3442 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
3443 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
3444 table_name, devlink);
3448 if (!table->table_ops->entries_dump)
3451 return devlink_dpipe_entries_fill(info, DEVLINK_CMD_DPIPE_ENTRIES_GET,
3455 static int devlink_dpipe_fields_put(struct sk_buff *skb,
3456 const struct devlink_dpipe_header *header)
3458 struct devlink_dpipe_field *field;
3459 struct nlattr *field_attr;
3462 for (i = 0; i < header->fields_count; i++) {
3463 field = &header->fields[i];
3464 field_attr = nla_nest_start_noflag(skb,
3465 DEVLINK_ATTR_DPIPE_FIELD);
3468 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_FIELD_NAME, field->name) ||
3469 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
3470 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_BITWIDTH, field->bitwidth) ||
3471 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_MAPPING_TYPE, field->mapping_type))
3472 goto nla_put_failure;
3473 nla_nest_end(skb, field_attr);
3478 nla_nest_cancel(skb, field_attr);
3482 static int devlink_dpipe_header_put(struct sk_buff *skb,
3483 struct devlink_dpipe_header *header)
3485 struct nlattr *fields_attr, *header_attr;
3488 header_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADER);
3492 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_HEADER_NAME, header->name) ||
3493 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
3494 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
3495 goto nla_put_failure;
3497 fields_attr = nla_nest_start_noflag(skb,
3498 DEVLINK_ATTR_DPIPE_HEADER_FIELDS);
3500 goto nla_put_failure;
3502 err = devlink_dpipe_fields_put(skb, header);
3504 nla_nest_cancel(skb, fields_attr);
3505 goto nla_put_failure;
3507 nla_nest_end(skb, fields_attr);
3508 nla_nest_end(skb, header_attr);
3513 nla_nest_cancel(skb, header_attr);
3517 static int devlink_dpipe_headers_fill(struct genl_info *info,
3518 enum devlink_command cmd, int flags,
3519 struct devlink_dpipe_headers *
3522 struct devlink *devlink = info->user_ptr[0];
3523 struct nlattr *headers_attr;
3524 struct sk_buff *skb = NULL;
3525 struct nlmsghdr *nlh;
3532 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
3536 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
3537 &devlink_nl_family, NLM_F_MULTI, cmd);
3543 if (devlink_nl_put_handle(skb, devlink))
3544 goto nla_put_failure;
3545 headers_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADERS);
3547 goto nla_put_failure;
3550 for (; i < dpipe_headers->headers_count; i++) {
3551 err = devlink_dpipe_header_put(skb, dpipe_headers->headers[i]);
3559 nla_nest_end(skb, headers_attr);
3560 genlmsg_end(skb, hdr);
3561 if (i != dpipe_headers->headers_count)
3565 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
3566 NLMSG_DONE, 0, flags | NLM_F_MULTI);
3568 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
3573 return genlmsg_reply(skb, info);
3582 static int devlink_nl_cmd_dpipe_headers_get(struct sk_buff *skb,
3583 struct genl_info *info)
3585 struct devlink *devlink = info->user_ptr[0];
3587 if (!devlink->dpipe_headers)
3589 return devlink_dpipe_headers_fill(info, DEVLINK_CMD_DPIPE_HEADERS_GET,
3590 0, devlink->dpipe_headers);
3593 static int devlink_dpipe_table_counters_set(struct devlink *devlink,
3594 const char *table_name,
3597 struct devlink_dpipe_table *table;
3599 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
3600 table_name, devlink);
3604 if (table->counter_control_extern)
3607 if (!(table->counters_enabled ^ enable))
3610 table->counters_enabled = enable;
3611 if (table->table_ops->counters_set_update)
3612 table->table_ops->counters_set_update(table->priv, enable);
3616 static int devlink_nl_cmd_dpipe_table_counters_set(struct sk_buff *skb,
3617 struct genl_info *info)
3619 struct devlink *devlink = info->user_ptr[0];
3620 const char *table_name;
3621 bool counters_enable;
3623 if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME] ||
3624 !info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED])
3627 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
3628 counters_enable = !!nla_get_u8(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED]);
3630 return devlink_dpipe_table_counters_set(devlink, table_name,
3634 static struct devlink_resource *
3635 devlink_resource_find(struct devlink *devlink,
3636 struct devlink_resource *resource, u64 resource_id)
3638 struct list_head *resource_list;
3641 resource_list = &resource->resource_list;
3643 resource_list = &devlink->resource_list;
3645 list_for_each_entry(resource, resource_list, list) {
3646 struct devlink_resource *child_resource;
3648 if (resource->id == resource_id)
3651 child_resource = devlink_resource_find(devlink, resource,
3654 return child_resource;
3660 devlink_resource_validate_children(struct devlink_resource *resource)
3662 struct devlink_resource *child_resource;
3663 bool size_valid = true;
3666 if (list_empty(&resource->resource_list))
3669 list_for_each_entry(child_resource, &resource->resource_list, list)
3670 parts_size += child_resource->size_new;
3672 if (parts_size > resource->size_new)
3675 resource->size_valid = size_valid;
3679 devlink_resource_validate_size(struct devlink_resource *resource, u64 size,
3680 struct netlink_ext_ack *extack)
3685 if (size > resource->size_params.size_max) {
3686 NL_SET_ERR_MSG_MOD(extack, "Size larger than maximum");
3690 if (size < resource->size_params.size_min) {
3691 NL_SET_ERR_MSG_MOD(extack, "Size smaller than minimum");
3695 div64_u64_rem(size, resource->size_params.size_granularity, &reminder);
3697 NL_SET_ERR_MSG_MOD(extack, "Wrong granularity");
3704 static int devlink_nl_cmd_resource_set(struct sk_buff *skb,
3705 struct genl_info *info)
3707 struct devlink *devlink = info->user_ptr[0];
3708 struct devlink_resource *resource;
3713 if (!info->attrs[DEVLINK_ATTR_RESOURCE_ID] ||
3714 !info->attrs[DEVLINK_ATTR_RESOURCE_SIZE])
3716 resource_id = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_ID]);
3718 resource = devlink_resource_find(devlink, NULL, resource_id);
3722 size = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_SIZE]);
3723 err = devlink_resource_validate_size(resource, size, info->extack);
3727 resource->size_new = size;
3728 devlink_resource_validate_children(resource);
3729 if (resource->parent)
3730 devlink_resource_validate_children(resource->parent);
3735 devlink_resource_size_params_put(struct devlink_resource *resource,
3736 struct sk_buff *skb)
3738 struct devlink_resource_size_params *size_params;
3740 size_params = &resource->size_params;
3741 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_GRAN,
3742 size_params->size_granularity, DEVLINK_ATTR_PAD) ||
3743 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MAX,
3744 size_params->size_max, DEVLINK_ATTR_PAD) ||
3745 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MIN,
3746 size_params->size_min, DEVLINK_ATTR_PAD) ||
3747 nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_UNIT, size_params->unit))
3752 static int devlink_resource_occ_put(struct devlink_resource *resource,
3753 struct sk_buff *skb)
3755 if (!resource->occ_get)
3757 return nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_OCC,
3758 resource->occ_get(resource->occ_get_priv),
3762 static int devlink_resource_put(struct devlink *devlink, struct sk_buff *skb,
3763 struct devlink_resource *resource)
3765 struct devlink_resource *child_resource;
3766 struct nlattr *child_resource_attr;
3767 struct nlattr *resource_attr;
3769 resource_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_RESOURCE);
3773 if (nla_put_string(skb, DEVLINK_ATTR_RESOURCE_NAME, resource->name) ||
3774 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE, resource->size,
3775 DEVLINK_ATTR_PAD) ||
3776 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_ID, resource->id,
3778 goto nla_put_failure;
3779 if (resource->size != resource->size_new)
3780 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_NEW,
3781 resource->size_new, DEVLINK_ATTR_PAD);
3782 if (devlink_resource_occ_put(resource, skb))
3783 goto nla_put_failure;
3784 if (devlink_resource_size_params_put(resource, skb))
3785 goto nla_put_failure;
3786 if (list_empty(&resource->resource_list))
3789 if (nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_SIZE_VALID,
3790 resource->size_valid))
3791 goto nla_put_failure;
3793 child_resource_attr = nla_nest_start_noflag(skb,
3794 DEVLINK_ATTR_RESOURCE_LIST);
3795 if (!child_resource_attr)
3796 goto nla_put_failure;
3798 list_for_each_entry(child_resource, &resource->resource_list, list) {
3799 if (devlink_resource_put(devlink, skb, child_resource))
3800 goto resource_put_failure;
3803 nla_nest_end(skb, child_resource_attr);
3805 nla_nest_end(skb, resource_attr);
3808 resource_put_failure:
3809 nla_nest_cancel(skb, child_resource_attr);
3811 nla_nest_cancel(skb, resource_attr);
3815 static int devlink_resource_fill(struct genl_info *info,
3816 enum devlink_command cmd, int flags)
3818 struct devlink *devlink = info->user_ptr[0];
3819 struct devlink_resource *resource;
3820 struct nlattr *resources_attr;
3821 struct sk_buff *skb = NULL;
3822 struct nlmsghdr *nlh;
3828 resource = list_first_entry(&devlink->resource_list,
3829 struct devlink_resource, list);
3831 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
3835 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
3836 &devlink_nl_family, NLM_F_MULTI, cmd);
3842 if (devlink_nl_put_handle(skb, devlink))
3843 goto nla_put_failure;
3845 resources_attr = nla_nest_start_noflag(skb,
3846 DEVLINK_ATTR_RESOURCE_LIST);
3847 if (!resources_attr)
3848 goto nla_put_failure;
3852 list_for_each_entry_from(resource, &devlink->resource_list, list) {
3853 err = devlink_resource_put(devlink, skb, resource);
3856 goto err_resource_put;
3862 nla_nest_end(skb, resources_attr);
3863 genlmsg_end(skb, hdr);
3867 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
3868 NLMSG_DONE, 0, flags | NLM_F_MULTI);
3870 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
3875 return genlmsg_reply(skb, info);
3884 static int devlink_nl_cmd_resource_dump(struct sk_buff *skb,
3885 struct genl_info *info)
3887 struct devlink *devlink = info->user_ptr[0];
3889 if (list_empty(&devlink->resource_list))
3892 return devlink_resource_fill(info, DEVLINK_CMD_RESOURCE_DUMP, 0);
3896 devlink_resources_validate(struct devlink *devlink,
3897 struct devlink_resource *resource,
3898 struct genl_info *info)
3900 struct list_head *resource_list;
3904 resource_list = &resource->resource_list;
3906 resource_list = &devlink->resource_list;
3908 list_for_each_entry(resource, resource_list, list) {
3909 if (!resource->size_valid)
3911 err = devlink_resources_validate(devlink, resource, info);
3918 static struct net *devlink_netns_get(struct sk_buff *skb,
3919 struct genl_info *info)
3921 struct nlattr *netns_pid_attr = info->attrs[DEVLINK_ATTR_NETNS_PID];
3922 struct nlattr *netns_fd_attr = info->attrs[DEVLINK_ATTR_NETNS_FD];
3923 struct nlattr *netns_id_attr = info->attrs[DEVLINK_ATTR_NETNS_ID];
3926 if (!!netns_pid_attr + !!netns_fd_attr + !!netns_id_attr > 1) {
3927 NL_SET_ERR_MSG_MOD(info->extack, "multiple netns identifying attributes specified");
3928 return ERR_PTR(-EINVAL);
3931 if (netns_pid_attr) {
3932 net = get_net_ns_by_pid(nla_get_u32(netns_pid_attr));
3933 } else if (netns_fd_attr) {
3934 net = get_net_ns_by_fd(nla_get_u32(netns_fd_attr));
3935 } else if (netns_id_attr) {
3936 net = get_net_ns_by_id(sock_net(skb->sk),
3937 nla_get_u32(netns_id_attr));
3939 net = ERR_PTR(-EINVAL);
3942 net = ERR_PTR(-EINVAL);
3945 NL_SET_ERR_MSG_MOD(info->extack, "Unknown network namespace");
3946 return ERR_PTR(-EINVAL);
3948 if (!netlink_ns_capable(skb, net->user_ns, CAP_NET_ADMIN)) {
3950 return ERR_PTR(-EPERM);
3955 static void devlink_param_notify(struct devlink *devlink,
3956 unsigned int port_index,
3957 struct devlink_param_item *param_item,
3958 enum devlink_command cmd);
3960 static void devlink_ns_change_notify(struct devlink *devlink,
3961 struct net *dest_net, struct net *curr_net,
3964 struct devlink_param_item *param_item;
3965 enum devlink_command cmd;
3967 /* Userspace needs to be notified about devlink objects
3968 * removed from original and entering new network namespace.
3969 * The rest of the devlink objects are re-created during
3970 * reload process so the notifications are generated separatelly.
3973 if (!dest_net || net_eq(dest_net, curr_net))
3977 devlink_notify(devlink, DEVLINK_CMD_NEW);
3979 cmd = new ? DEVLINK_CMD_PARAM_NEW : DEVLINK_CMD_PARAM_DEL;
3980 list_for_each_entry(param_item, &devlink->param_list, list)
3981 devlink_param_notify(devlink, 0, param_item, cmd);
3984 devlink_notify(devlink, DEVLINK_CMD_DEL);
3987 static bool devlink_reload_supported(const struct devlink_ops *ops)
3989 return ops->reload_down && ops->reload_up;
3992 static void devlink_reload_failed_set(struct devlink *devlink,
3995 if (devlink->reload_failed == reload_failed)
3997 devlink->reload_failed = reload_failed;
3998 devlink_notify(devlink, DEVLINK_CMD_NEW);
4001 bool devlink_is_reload_failed(const struct devlink *devlink)
4003 return devlink->reload_failed;
4005 EXPORT_SYMBOL_GPL(devlink_is_reload_failed);
4008 __devlink_reload_stats_update(struct devlink *devlink, u32 *reload_stats,
4009 enum devlink_reload_limit limit, u32 actions_performed)
4011 unsigned long actions = actions_performed;
4015 for_each_set_bit(action, &actions, __DEVLINK_RELOAD_ACTION_MAX) {
4016 stat_idx = limit * __DEVLINK_RELOAD_ACTION_MAX + action;
4017 reload_stats[stat_idx]++;
4019 devlink_notify(devlink, DEVLINK_CMD_NEW);
4023 devlink_reload_stats_update(struct devlink *devlink, enum devlink_reload_limit limit,
4024 u32 actions_performed)
4026 __devlink_reload_stats_update(devlink, devlink->stats.reload_stats, limit,
4031 * devlink_remote_reload_actions_performed - Update devlink on reload actions
4032 * performed which are not a direct result of devlink reload call.
4034 * This should be called by a driver after performing reload actions in case it was not
4035 * a result of devlink reload call. For example fw_activate was performed as a result
4036 * of devlink reload triggered fw_activate on another host.
4037 * The motivation for this function is to keep data on reload actions performed on this
4038 * function whether it was done due to direct devlink reload call or not.
4041 * @limit: reload limit
4042 * @actions_performed: bitmask of actions performed
4044 void devlink_remote_reload_actions_performed(struct devlink *devlink,
4045 enum devlink_reload_limit limit,
4046 u32 actions_performed)
4048 if (WARN_ON(!actions_performed ||
4049 actions_performed & BIT(DEVLINK_RELOAD_ACTION_UNSPEC) ||
4050 actions_performed >= BIT(__DEVLINK_RELOAD_ACTION_MAX) ||
4051 limit > DEVLINK_RELOAD_LIMIT_MAX))
4054 __devlink_reload_stats_update(devlink, devlink->stats.remote_reload_stats, limit,
4057 EXPORT_SYMBOL_GPL(devlink_remote_reload_actions_performed);
4059 static int devlink_reload(struct devlink *devlink, struct net *dest_net,
4060 enum devlink_reload_action action, enum devlink_reload_limit limit,
4061 u32 *actions_performed, struct netlink_ext_ack *extack)
4063 u32 remote_reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE];
4064 struct net *curr_net;
4067 memcpy(remote_reload_stats, devlink->stats.remote_reload_stats,
4068 sizeof(remote_reload_stats));
4070 curr_net = devlink_net(devlink);
4071 devlink_ns_change_notify(devlink, dest_net, curr_net, false);
4072 err = devlink->ops->reload_down(devlink, !!dest_net, action, limit, extack);
4076 if (dest_net && !net_eq(dest_net, curr_net))
4077 write_pnet(&devlink->_net, dest_net);
4079 err = devlink->ops->reload_up(devlink, action, limit, actions_performed, extack);
4080 devlink_reload_failed_set(devlink, !!err);
4084 devlink_ns_change_notify(devlink, dest_net, curr_net, true);
4085 WARN_ON(!(*actions_performed & BIT(action)));
4086 /* Catch driver on updating the remote action within devlink reload */
4087 WARN_ON(memcmp(remote_reload_stats, devlink->stats.remote_reload_stats,
4088 sizeof(remote_reload_stats)));
4089 devlink_reload_stats_update(devlink, limit, *actions_performed);
4094 devlink_nl_reload_actions_performed_snd(struct devlink *devlink, u32 actions_performed,
4095 enum devlink_command cmd, struct genl_info *info)
4097 struct sk_buff *msg;
4100 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4104 hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq, &devlink_nl_family, 0, cmd);
4108 if (devlink_nl_put_handle(msg, devlink))
4109 goto nla_put_failure;
4111 if (nla_put_bitfield32(msg, DEVLINK_ATTR_RELOAD_ACTIONS_PERFORMED, actions_performed,
4113 goto nla_put_failure;
4114 genlmsg_end(msg, hdr);
4116 return genlmsg_reply(msg, info);
4119 genlmsg_cancel(msg, hdr);
4125 static int devlink_nl_cmd_reload(struct sk_buff *skb, struct genl_info *info)
4127 struct devlink *devlink = info->user_ptr[0];
4128 enum devlink_reload_action action;
4129 enum devlink_reload_limit limit;
4130 struct net *dest_net = NULL;
4131 u32 actions_performed;
4134 if (!(devlink->features & DEVLINK_F_RELOAD))
4137 err = devlink_resources_validate(devlink, NULL, info);
4139 NL_SET_ERR_MSG_MOD(info->extack, "resources size validation failed");
4143 if (info->attrs[DEVLINK_ATTR_RELOAD_ACTION])
4144 action = nla_get_u8(info->attrs[DEVLINK_ATTR_RELOAD_ACTION]);
4146 action = DEVLINK_RELOAD_ACTION_DRIVER_REINIT;
4148 if (!devlink_reload_action_is_supported(devlink, action)) {
4149 NL_SET_ERR_MSG_MOD(info->extack,
4150 "Requested reload action is not supported by the driver");
4154 limit = DEVLINK_RELOAD_LIMIT_UNSPEC;
4155 if (info->attrs[DEVLINK_ATTR_RELOAD_LIMITS]) {
4156 struct nla_bitfield32 limits;
4157 u32 limits_selected;
4159 limits = nla_get_bitfield32(info->attrs[DEVLINK_ATTR_RELOAD_LIMITS]);
4160 limits_selected = limits.value & limits.selector;
4161 if (!limits_selected) {
4162 NL_SET_ERR_MSG_MOD(info->extack, "Invalid limit selected");
4165 for (limit = 0 ; limit <= DEVLINK_RELOAD_LIMIT_MAX ; limit++)
4166 if (limits_selected & BIT(limit))
4168 /* UAPI enables multiselection, but currently it is not used */
4169 if (limits_selected != BIT(limit)) {
4170 NL_SET_ERR_MSG_MOD(info->extack,
4171 "Multiselection of limit is not supported");
4174 if (!devlink_reload_limit_is_supported(devlink, limit)) {
4175 NL_SET_ERR_MSG_MOD(info->extack,
4176 "Requested limit is not supported by the driver");
4179 if (devlink_reload_combination_is_invalid(action, limit)) {
4180 NL_SET_ERR_MSG_MOD(info->extack,
4181 "Requested limit is invalid for this action");
4185 if (info->attrs[DEVLINK_ATTR_NETNS_PID] ||
4186 info->attrs[DEVLINK_ATTR_NETNS_FD] ||
4187 info->attrs[DEVLINK_ATTR_NETNS_ID]) {
4188 dest_net = devlink_netns_get(skb, info);
4189 if (IS_ERR(dest_net))
4190 return PTR_ERR(dest_net);
4193 err = devlink_reload(devlink, dest_net, action, limit, &actions_performed, info->extack);
4200 /* For backward compatibility generate reply only if attributes used by user */
4201 if (!info->attrs[DEVLINK_ATTR_RELOAD_ACTION] && !info->attrs[DEVLINK_ATTR_RELOAD_LIMITS])
4204 return devlink_nl_reload_actions_performed_snd(devlink, actions_performed,
4205 DEVLINK_CMD_RELOAD, info);
4208 static int devlink_nl_flash_update_fill(struct sk_buff *msg,
4209 struct devlink *devlink,
4210 enum devlink_command cmd,
4211 struct devlink_flash_notify *params)
4215 hdr = genlmsg_put(msg, 0, 0, &devlink_nl_family, 0, cmd);
4219 if (devlink_nl_put_handle(msg, devlink))
4220 goto nla_put_failure;
4222 if (cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS)
4225 if (params->status_msg &&
4226 nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_MSG,
4227 params->status_msg))
4228 goto nla_put_failure;
4229 if (params->component &&
4230 nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_COMPONENT,
4232 goto nla_put_failure;
4233 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_DONE,
4234 params->done, DEVLINK_ATTR_PAD))
4235 goto nla_put_failure;
4236 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TOTAL,
4237 params->total, DEVLINK_ATTR_PAD))
4238 goto nla_put_failure;
4239 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TIMEOUT,
4240 params->timeout, DEVLINK_ATTR_PAD))
4241 goto nla_put_failure;
4244 genlmsg_end(msg, hdr);
4248 genlmsg_cancel(msg, hdr);
4252 static void __devlink_flash_update_notify(struct devlink *devlink,
4253 enum devlink_command cmd,
4254 struct devlink_flash_notify *params)
4256 struct sk_buff *msg;
4259 WARN_ON(cmd != DEVLINK_CMD_FLASH_UPDATE &&
4260 cmd != DEVLINK_CMD_FLASH_UPDATE_END &&
4261 cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS);
4263 if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
4266 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4270 err = devlink_nl_flash_update_fill(msg, devlink, cmd, params);
4274 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
4275 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
4282 static void devlink_flash_update_begin_notify(struct devlink *devlink)
4284 struct devlink_flash_notify params = {};
4286 __devlink_flash_update_notify(devlink,
4287 DEVLINK_CMD_FLASH_UPDATE,
4291 static void devlink_flash_update_end_notify(struct devlink *devlink)
4293 struct devlink_flash_notify params = {};
4295 __devlink_flash_update_notify(devlink,
4296 DEVLINK_CMD_FLASH_UPDATE_END,
4300 void devlink_flash_update_status_notify(struct devlink *devlink,
4301 const char *status_msg,
4302 const char *component,
4304 unsigned long total)
4306 struct devlink_flash_notify params = {
4307 .status_msg = status_msg,
4308 .component = component,
4313 __devlink_flash_update_notify(devlink,
4314 DEVLINK_CMD_FLASH_UPDATE_STATUS,
4317 EXPORT_SYMBOL_GPL(devlink_flash_update_status_notify);
4319 void devlink_flash_update_timeout_notify(struct devlink *devlink,
4320 const char *status_msg,
4321 const char *component,
4322 unsigned long timeout)
4324 struct devlink_flash_notify params = {
4325 .status_msg = status_msg,
4326 .component = component,
4330 __devlink_flash_update_notify(devlink,
4331 DEVLINK_CMD_FLASH_UPDATE_STATUS,
4334 EXPORT_SYMBOL_GPL(devlink_flash_update_timeout_notify);
4336 static int devlink_nl_cmd_flash_update(struct sk_buff *skb,
4337 struct genl_info *info)
4339 struct nlattr *nla_component, *nla_overwrite_mask, *nla_file_name;
4340 struct devlink_flash_update_params params = {};
4341 struct devlink *devlink = info->user_ptr[0];
4342 const char *file_name;
4343 u32 supported_params;
4346 if (!devlink->ops->flash_update)
4349 if (!info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME])
4352 supported_params = devlink->ops->supported_flash_update_params;
4354 nla_component = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_COMPONENT];
4355 if (nla_component) {
4356 if (!(supported_params & DEVLINK_SUPPORT_FLASH_UPDATE_COMPONENT)) {
4357 NL_SET_ERR_MSG_ATTR(info->extack, nla_component,
4358 "component update is not supported by this device");
4361 params.component = nla_data(nla_component);
4364 nla_overwrite_mask = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_OVERWRITE_MASK];
4365 if (nla_overwrite_mask) {
4366 struct nla_bitfield32 sections;
4368 if (!(supported_params & DEVLINK_SUPPORT_FLASH_UPDATE_OVERWRITE_MASK)) {
4369 NL_SET_ERR_MSG_ATTR(info->extack, nla_overwrite_mask,
4370 "overwrite settings are not supported by this device");
4373 sections = nla_get_bitfield32(nla_overwrite_mask);
4374 params.overwrite_mask = sections.value & sections.selector;
4377 nla_file_name = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME];
4378 file_name = nla_data(nla_file_name);
4379 ret = request_firmware(¶ms.fw, file_name, devlink->dev);
4381 NL_SET_ERR_MSG_ATTR(info->extack, nla_file_name, "failed to locate the requested firmware file");
4385 devlink_flash_update_begin_notify(devlink);
4386 ret = devlink->ops->flash_update(devlink, ¶ms, info->extack);
4387 devlink_flash_update_end_notify(devlink);
4389 release_firmware(params.fw);
4394 static const struct devlink_param devlink_param_generic[] = {
4396 .id = DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET,
4397 .name = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_NAME,
4398 .type = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_TYPE,
4401 .id = DEVLINK_PARAM_GENERIC_ID_MAX_MACS,
4402 .name = DEVLINK_PARAM_GENERIC_MAX_MACS_NAME,
4403 .type = DEVLINK_PARAM_GENERIC_MAX_MACS_TYPE,
4406 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_SRIOV,
4407 .name = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_NAME,
4408 .type = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_TYPE,
4411 .id = DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT,
4412 .name = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_NAME,
4413 .type = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_TYPE,
4416 .id = DEVLINK_PARAM_GENERIC_ID_IGNORE_ARI,
4417 .name = DEVLINK_PARAM_GENERIC_IGNORE_ARI_NAME,
4418 .type = DEVLINK_PARAM_GENERIC_IGNORE_ARI_TYPE,
4421 .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX,
4422 .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_NAME,
4423 .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_TYPE,
4426 .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN,
4427 .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_NAME,
4428 .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_TYPE,
4431 .id = DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY,
4432 .name = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_NAME,
4433 .type = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_TYPE,
4436 .id = DEVLINK_PARAM_GENERIC_ID_RESET_DEV_ON_DRV_PROBE,
4437 .name = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_NAME,
4438 .type = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_TYPE,
4441 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_ROCE,
4442 .name = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_NAME,
4443 .type = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_TYPE,
4446 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_REMOTE_DEV_RESET,
4447 .name = DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_NAME,
4448 .type = DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_TYPE,
4451 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_ETH,
4452 .name = DEVLINK_PARAM_GENERIC_ENABLE_ETH_NAME,
4453 .type = DEVLINK_PARAM_GENERIC_ENABLE_ETH_TYPE,
4456 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_RDMA,
4457 .name = DEVLINK_PARAM_GENERIC_ENABLE_RDMA_NAME,
4458 .type = DEVLINK_PARAM_GENERIC_ENABLE_RDMA_TYPE,
4461 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_VNET,
4462 .name = DEVLINK_PARAM_GENERIC_ENABLE_VNET_NAME,
4463 .type = DEVLINK_PARAM_GENERIC_ENABLE_VNET_TYPE,
4466 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_IWARP,
4467 .name = DEVLINK_PARAM_GENERIC_ENABLE_IWARP_NAME,
4468 .type = DEVLINK_PARAM_GENERIC_ENABLE_IWARP_TYPE,
4471 .id = DEVLINK_PARAM_GENERIC_ID_IO_EQ_SIZE,
4472 .name = DEVLINK_PARAM_GENERIC_IO_EQ_SIZE_NAME,
4473 .type = DEVLINK_PARAM_GENERIC_IO_EQ_SIZE_TYPE,
4476 .id = DEVLINK_PARAM_GENERIC_ID_EVENT_EQ_SIZE,
4477 .name = DEVLINK_PARAM_GENERIC_EVENT_EQ_SIZE_NAME,
4478 .type = DEVLINK_PARAM_GENERIC_EVENT_EQ_SIZE_TYPE,
4482 static int devlink_param_generic_verify(const struct devlink_param *param)
4484 /* verify it match generic parameter by id and name */
4485 if (param->id > DEVLINK_PARAM_GENERIC_ID_MAX)
4487 if (strcmp(param->name, devlink_param_generic[param->id].name))
4490 WARN_ON(param->type != devlink_param_generic[param->id].type);
4495 static int devlink_param_driver_verify(const struct devlink_param *param)
4499 if (param->id <= DEVLINK_PARAM_GENERIC_ID_MAX)
4501 /* verify no such name in generic params */
4502 for (i = 0; i <= DEVLINK_PARAM_GENERIC_ID_MAX; i++)
4503 if (!strcmp(param->name, devlink_param_generic[i].name))
4509 static struct devlink_param_item *
4510 devlink_param_find_by_name(struct list_head *param_list,
4511 const char *param_name)
4513 struct devlink_param_item *param_item;
4515 list_for_each_entry(param_item, param_list, list)
4516 if (!strcmp(param_item->param->name, param_name))
4521 static struct devlink_param_item *
4522 devlink_param_find_by_id(struct list_head *param_list, u32 param_id)
4524 struct devlink_param_item *param_item;
4526 list_for_each_entry(param_item, param_list, list)
4527 if (param_item->param->id == param_id)
4533 devlink_param_cmode_is_supported(const struct devlink_param *param,
4534 enum devlink_param_cmode cmode)
4536 return test_bit(cmode, ¶m->supported_cmodes);
4539 static int devlink_param_get(struct devlink *devlink,
4540 const struct devlink_param *param,
4541 struct devlink_param_gset_ctx *ctx)
4545 return param->get(devlink, param->id, ctx);
4548 static int devlink_param_set(struct devlink *devlink,
4549 const struct devlink_param *param,
4550 struct devlink_param_gset_ctx *ctx)
4554 return param->set(devlink, param->id, ctx);
4558 devlink_param_type_to_nla_type(enum devlink_param_type param_type)
4560 switch (param_type) {
4561 case DEVLINK_PARAM_TYPE_U8:
4563 case DEVLINK_PARAM_TYPE_U16:
4565 case DEVLINK_PARAM_TYPE_U32:
4567 case DEVLINK_PARAM_TYPE_STRING:
4569 case DEVLINK_PARAM_TYPE_BOOL:
4577 devlink_nl_param_value_fill_one(struct sk_buff *msg,
4578 enum devlink_param_type type,
4579 enum devlink_param_cmode cmode,
4580 union devlink_param_value val)
4582 struct nlattr *param_value_attr;
4584 param_value_attr = nla_nest_start_noflag(msg,
4585 DEVLINK_ATTR_PARAM_VALUE);
4586 if (!param_value_attr)
4587 goto nla_put_failure;
4589 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_CMODE, cmode))
4590 goto value_nest_cancel;
4593 case DEVLINK_PARAM_TYPE_U8:
4594 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu8))
4595 goto value_nest_cancel;
4597 case DEVLINK_PARAM_TYPE_U16:
4598 if (nla_put_u16(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu16))
4599 goto value_nest_cancel;
4601 case DEVLINK_PARAM_TYPE_U32:
4602 if (nla_put_u32(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu32))
4603 goto value_nest_cancel;
4605 case DEVLINK_PARAM_TYPE_STRING:
4606 if (nla_put_string(msg, DEVLINK_ATTR_PARAM_VALUE_DATA,
4608 goto value_nest_cancel;
4610 case DEVLINK_PARAM_TYPE_BOOL:
4612 nla_put_flag(msg, DEVLINK_ATTR_PARAM_VALUE_DATA))
4613 goto value_nest_cancel;
4617 nla_nest_end(msg, param_value_attr);
4621 nla_nest_cancel(msg, param_value_attr);
4626 static int devlink_nl_param_fill(struct sk_buff *msg, struct devlink *devlink,
4627 unsigned int port_index,
4628 struct devlink_param_item *param_item,
4629 enum devlink_command cmd,
4630 u32 portid, u32 seq, int flags)
4632 union devlink_param_value param_value[DEVLINK_PARAM_CMODE_MAX + 1];
4633 bool param_value_set[DEVLINK_PARAM_CMODE_MAX + 1] = {};
4634 const struct devlink_param *param = param_item->param;
4635 struct devlink_param_gset_ctx ctx;
4636 struct nlattr *param_values_list;
4637 struct nlattr *param_attr;
4643 /* Get value from driver part to driverinit configuration mode */
4644 for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
4645 if (!devlink_param_cmode_is_supported(param, i))
4647 if (i == DEVLINK_PARAM_CMODE_DRIVERINIT) {
4648 if (!param_item->driverinit_value_valid)
4650 param_value[i] = param_item->driverinit_value;
4653 err = devlink_param_get(devlink, param, &ctx);
4656 param_value[i] = ctx.val;
4658 param_value_set[i] = true;
4661 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
4665 if (devlink_nl_put_handle(msg, devlink))
4666 goto genlmsg_cancel;
4668 if (cmd == DEVLINK_CMD_PORT_PARAM_GET ||
4669 cmd == DEVLINK_CMD_PORT_PARAM_NEW ||
4670 cmd == DEVLINK_CMD_PORT_PARAM_DEL)
4671 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, port_index))
4672 goto genlmsg_cancel;
4674 param_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PARAM);
4676 goto genlmsg_cancel;
4677 if (nla_put_string(msg, DEVLINK_ATTR_PARAM_NAME, param->name))
4678 goto param_nest_cancel;
4679 if (param->generic && nla_put_flag(msg, DEVLINK_ATTR_PARAM_GENERIC))
4680 goto param_nest_cancel;
4682 nla_type = devlink_param_type_to_nla_type(param->type);
4684 goto param_nest_cancel;
4685 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_TYPE, nla_type))
4686 goto param_nest_cancel;
4688 param_values_list = nla_nest_start_noflag(msg,
4689 DEVLINK_ATTR_PARAM_VALUES_LIST);
4690 if (!param_values_list)
4691 goto param_nest_cancel;
4693 for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
4694 if (!param_value_set[i])
4696 err = devlink_nl_param_value_fill_one(msg, param->type,
4699 goto values_list_nest_cancel;
4702 nla_nest_end(msg, param_values_list);
4703 nla_nest_end(msg, param_attr);
4704 genlmsg_end(msg, hdr);
4707 values_list_nest_cancel:
4708 nla_nest_end(msg, param_values_list);
4710 nla_nest_cancel(msg, param_attr);
4712 genlmsg_cancel(msg, hdr);
4716 static void devlink_param_notify(struct devlink *devlink,
4717 unsigned int port_index,
4718 struct devlink_param_item *param_item,
4719 enum devlink_command cmd)
4721 struct sk_buff *msg;
4724 WARN_ON(cmd != DEVLINK_CMD_PARAM_NEW && cmd != DEVLINK_CMD_PARAM_DEL &&
4725 cmd != DEVLINK_CMD_PORT_PARAM_NEW &&
4726 cmd != DEVLINK_CMD_PORT_PARAM_DEL);
4727 ASSERT_DEVLINK_REGISTERED(devlink);
4729 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4732 err = devlink_nl_param_fill(msg, devlink, port_index, param_item, cmd,
4739 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
4740 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
4743 static int devlink_nl_cmd_param_get_dumpit(struct sk_buff *msg,
4744 struct netlink_callback *cb)
4746 struct devlink_param_item *param_item;
4747 struct devlink *devlink;
4748 int start = cb->args[0];
4749 unsigned long index;
4753 mutex_lock(&devlink_mutex);
4754 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
4755 if (!devlink_try_get(devlink))
4758 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
4761 mutex_lock(&devlink->lock);
4762 list_for_each_entry(param_item, &devlink->param_list, list) {
4767 err = devlink_nl_param_fill(msg, devlink, 0, param_item,
4768 DEVLINK_CMD_PARAM_GET,
4769 NETLINK_CB(cb->skb).portid,
4772 if (err == -EOPNOTSUPP) {
4775 mutex_unlock(&devlink->lock);
4776 devlink_put(devlink);
4781 mutex_unlock(&devlink->lock);
4783 devlink_put(devlink);
4786 mutex_unlock(&devlink_mutex);
4788 if (err != -EMSGSIZE)
4796 devlink_param_type_get_from_info(struct genl_info *info,
4797 enum devlink_param_type *param_type)
4799 if (!info->attrs[DEVLINK_ATTR_PARAM_TYPE])
4802 switch (nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_TYPE])) {
4804 *param_type = DEVLINK_PARAM_TYPE_U8;
4807 *param_type = DEVLINK_PARAM_TYPE_U16;
4810 *param_type = DEVLINK_PARAM_TYPE_U32;
4813 *param_type = DEVLINK_PARAM_TYPE_STRING;
4816 *param_type = DEVLINK_PARAM_TYPE_BOOL;
4826 devlink_param_value_get_from_info(const struct devlink_param *param,
4827 struct genl_info *info,
4828 union devlink_param_value *value)
4830 struct nlattr *param_data;
4833 param_data = info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA];
4835 if (param->type != DEVLINK_PARAM_TYPE_BOOL && !param_data)
4838 switch (param->type) {
4839 case DEVLINK_PARAM_TYPE_U8:
4840 if (nla_len(param_data) != sizeof(u8))
4842 value->vu8 = nla_get_u8(param_data);
4844 case DEVLINK_PARAM_TYPE_U16:
4845 if (nla_len(param_data) != sizeof(u16))
4847 value->vu16 = nla_get_u16(param_data);
4849 case DEVLINK_PARAM_TYPE_U32:
4850 if (nla_len(param_data) != sizeof(u32))
4852 value->vu32 = nla_get_u32(param_data);
4854 case DEVLINK_PARAM_TYPE_STRING:
4855 len = strnlen(nla_data(param_data), nla_len(param_data));
4856 if (len == nla_len(param_data) ||
4857 len >= __DEVLINK_PARAM_MAX_STRING_VALUE)
4859 strcpy(value->vstr, nla_data(param_data));
4861 case DEVLINK_PARAM_TYPE_BOOL:
4862 if (param_data && nla_len(param_data))
4864 value->vbool = nla_get_flag(param_data);
4870 static struct devlink_param_item *
4871 devlink_param_get_from_info(struct list_head *param_list,
4872 struct genl_info *info)
4876 if (!info->attrs[DEVLINK_ATTR_PARAM_NAME])
4879 param_name = nla_data(info->attrs[DEVLINK_ATTR_PARAM_NAME]);
4880 return devlink_param_find_by_name(param_list, param_name);
4883 static int devlink_nl_cmd_param_get_doit(struct sk_buff *skb,
4884 struct genl_info *info)
4886 struct devlink *devlink = info->user_ptr[0];
4887 struct devlink_param_item *param_item;
4888 struct sk_buff *msg;
4891 param_item = devlink_param_get_from_info(&devlink->param_list, info);
4895 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4899 err = devlink_nl_param_fill(msg, devlink, 0, param_item,
4900 DEVLINK_CMD_PARAM_GET,
4901 info->snd_portid, info->snd_seq, 0);
4907 return genlmsg_reply(msg, info);
4910 static int __devlink_nl_cmd_param_set_doit(struct devlink *devlink,
4911 unsigned int port_index,
4912 struct list_head *param_list,
4913 struct genl_info *info,
4914 enum devlink_command cmd)
4916 enum devlink_param_type param_type;
4917 struct devlink_param_gset_ctx ctx;
4918 enum devlink_param_cmode cmode;
4919 struct devlink_param_item *param_item;
4920 const struct devlink_param *param;
4921 union devlink_param_value value;
4924 param_item = devlink_param_get_from_info(param_list, info);
4927 param = param_item->param;
4928 err = devlink_param_type_get_from_info(info, ¶m_type);
4931 if (param_type != param->type)
4933 err = devlink_param_value_get_from_info(param, info, &value);
4936 if (param->validate) {
4937 err = param->validate(devlink, param->id, value, info->extack);
4942 if (!info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE])
4944 cmode = nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE]);
4945 if (!devlink_param_cmode_is_supported(param, cmode))
4948 if (cmode == DEVLINK_PARAM_CMODE_DRIVERINIT) {
4949 if (param->type == DEVLINK_PARAM_TYPE_STRING)
4950 strcpy(param_item->driverinit_value.vstr, value.vstr);
4952 param_item->driverinit_value = value;
4953 param_item->driverinit_value_valid = true;
4959 err = devlink_param_set(devlink, param, &ctx);
4964 devlink_param_notify(devlink, port_index, param_item, cmd);
4968 static int devlink_nl_cmd_param_set_doit(struct sk_buff *skb,
4969 struct genl_info *info)
4971 struct devlink *devlink = info->user_ptr[0];
4973 return __devlink_nl_cmd_param_set_doit(devlink, 0, &devlink->param_list,
4974 info, DEVLINK_CMD_PARAM_NEW);
4977 static int devlink_nl_cmd_port_param_get_dumpit(struct sk_buff *msg,
4978 struct netlink_callback *cb)
4980 struct devlink_param_item *param_item;
4981 struct devlink_port *devlink_port;
4982 struct devlink *devlink;
4983 int start = cb->args[0];
4984 unsigned long index;
4988 mutex_lock(&devlink_mutex);
4989 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
4990 if (!devlink_try_get(devlink))
4993 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
4996 mutex_lock(&devlink->lock);
4997 list_for_each_entry(devlink_port, &devlink->port_list, list) {
4998 list_for_each_entry(param_item,
4999 &devlink_port->param_list, list) {
5004 err = devlink_nl_param_fill(msg,
5005 devlink_port->devlink,
5006 devlink_port->index, param_item,
5007 DEVLINK_CMD_PORT_PARAM_GET,
5008 NETLINK_CB(cb->skb).portid,
5011 if (err == -EOPNOTSUPP) {
5014 mutex_unlock(&devlink->lock);
5015 devlink_put(devlink);
5021 mutex_unlock(&devlink->lock);
5023 devlink_put(devlink);
5026 mutex_unlock(&devlink_mutex);
5028 if (err != -EMSGSIZE)
5035 static int devlink_nl_cmd_port_param_get_doit(struct sk_buff *skb,
5036 struct genl_info *info)
5038 struct devlink_port *devlink_port = info->user_ptr[1];
5039 struct devlink_param_item *param_item;
5040 struct sk_buff *msg;
5043 param_item = devlink_param_get_from_info(&devlink_port->param_list,
5048 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5052 err = devlink_nl_param_fill(msg, devlink_port->devlink,
5053 devlink_port->index, param_item,
5054 DEVLINK_CMD_PORT_PARAM_GET,
5055 info->snd_portid, info->snd_seq, 0);
5061 return genlmsg_reply(msg, info);
5064 static int devlink_nl_cmd_port_param_set_doit(struct sk_buff *skb,
5065 struct genl_info *info)
5067 struct devlink_port *devlink_port = info->user_ptr[1];
5069 return __devlink_nl_cmd_param_set_doit(devlink_port->devlink,
5070 devlink_port->index,
5071 &devlink_port->param_list, info,
5072 DEVLINK_CMD_PORT_PARAM_NEW);
5075 static int devlink_nl_region_snapshot_id_put(struct sk_buff *msg,
5076 struct devlink *devlink,
5077 struct devlink_snapshot *snapshot)
5079 struct nlattr *snap_attr;
5082 snap_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_SNAPSHOT);
5086 err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID, snapshot->id);
5088 goto nla_put_failure;
5090 nla_nest_end(msg, snap_attr);
5094 nla_nest_cancel(msg, snap_attr);
5098 static int devlink_nl_region_snapshots_id_put(struct sk_buff *msg,
5099 struct devlink *devlink,
5100 struct devlink_region *region)
5102 struct devlink_snapshot *snapshot;
5103 struct nlattr *snapshots_attr;
5106 snapshots_attr = nla_nest_start_noflag(msg,
5107 DEVLINK_ATTR_REGION_SNAPSHOTS);
5108 if (!snapshots_attr)
5111 list_for_each_entry(snapshot, ®ion->snapshot_list, list) {
5112 err = devlink_nl_region_snapshot_id_put(msg, devlink, snapshot);
5114 goto nla_put_failure;
5117 nla_nest_end(msg, snapshots_attr);
5121 nla_nest_cancel(msg, snapshots_attr);
5125 static int devlink_nl_region_fill(struct sk_buff *msg, struct devlink *devlink,
5126 enum devlink_command cmd, u32 portid,
5128 struct devlink_region *region)
5133 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
5137 err = devlink_nl_put_handle(msg, devlink);
5139 goto nla_put_failure;
5142 err = nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
5143 region->port->index);
5145 goto nla_put_failure;
5148 err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME, region->ops->name);
5150 goto nla_put_failure;
5152 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
5156 goto nla_put_failure;
5158 err = nla_put_u32(msg, DEVLINK_ATTR_REGION_MAX_SNAPSHOTS,
5159 region->max_snapshots);
5161 goto nla_put_failure;
5163 err = devlink_nl_region_snapshots_id_put(msg, devlink, region);
5165 goto nla_put_failure;
5167 genlmsg_end(msg, hdr);
5171 genlmsg_cancel(msg, hdr);
5175 static struct sk_buff *
5176 devlink_nl_region_notify_build(struct devlink_region *region,
5177 struct devlink_snapshot *snapshot,
5178 enum devlink_command cmd, u32 portid, u32 seq)
5180 struct devlink *devlink = region->devlink;
5181 struct sk_buff *msg;
5186 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5188 return ERR_PTR(-ENOMEM);
5190 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, 0, cmd);
5196 err = devlink_nl_put_handle(msg, devlink);
5198 goto out_cancel_msg;
5201 err = nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
5202 region->port->index);
5204 goto out_cancel_msg;
5207 err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME,
5210 goto out_cancel_msg;
5213 err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID,
5216 goto out_cancel_msg;
5218 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
5219 region->size, DEVLINK_ATTR_PAD);
5221 goto out_cancel_msg;
5223 genlmsg_end(msg, hdr);
5228 genlmsg_cancel(msg, hdr);
5231 return ERR_PTR(err);
5234 static void devlink_nl_region_notify(struct devlink_region *region,
5235 struct devlink_snapshot *snapshot,
5236 enum devlink_command cmd)
5238 struct devlink *devlink = region->devlink;
5239 struct sk_buff *msg;
5241 WARN_ON(cmd != DEVLINK_CMD_REGION_NEW && cmd != DEVLINK_CMD_REGION_DEL);
5242 if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
5245 msg = devlink_nl_region_notify_build(region, snapshot, cmd, 0, 0);
5249 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
5250 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
5254 * __devlink_snapshot_id_increment - Increment number of snapshots using an id
5255 * @devlink: devlink instance
5256 * @id: the snapshot id
5258 * Track when a new snapshot begins using an id. Load the count for the
5259 * given id from the snapshot xarray, increment it, and store it back.
5261 * Called when a new snapshot is created with the given id.
5263 * The id *must* have been previously allocated by
5264 * devlink_region_snapshot_id_get().
5266 * Returns 0 on success, or an error on failure.
5268 static int __devlink_snapshot_id_increment(struct devlink *devlink, u32 id)
5270 unsigned long count;
5273 lockdep_assert_held(&devlink->lock);
5275 p = xa_load(&devlink->snapshot_ids, id);
5279 if (WARN_ON(!xa_is_value(p)))
5282 count = xa_to_value(p);
5285 return xa_err(xa_store(&devlink->snapshot_ids, id, xa_mk_value(count),
5290 * __devlink_snapshot_id_decrement - Decrease number of snapshots using an id
5291 * @devlink: devlink instance
5292 * @id: the snapshot id
5294 * Track when a snapshot is deleted and stops using an id. Load the count
5295 * for the given id from the snapshot xarray, decrement it, and store it
5298 * If the count reaches zero, erase this id from the xarray, freeing it
5299 * up for future re-use by devlink_region_snapshot_id_get().
5301 * Called when a snapshot using the given id is deleted, and when the
5302 * initial allocator of the id is finished using it.
5304 static void __devlink_snapshot_id_decrement(struct devlink *devlink, u32 id)
5306 unsigned long count;
5309 lockdep_assert_held(&devlink->lock);
5311 p = xa_load(&devlink->snapshot_ids, id);
5315 if (WARN_ON(!xa_is_value(p)))
5318 count = xa_to_value(p);
5322 xa_store(&devlink->snapshot_ids, id, xa_mk_value(count),
5325 /* If this was the last user, we can erase this id */
5326 xa_erase(&devlink->snapshot_ids, id);
5331 * __devlink_snapshot_id_insert - Insert a specific snapshot ID
5332 * @devlink: devlink instance
5333 * @id: the snapshot id
5335 * Mark the given snapshot id as used by inserting a zero value into the
5338 * This must be called while holding the devlink instance lock. Unlike
5339 * devlink_snapshot_id_get, the initial reference count is zero, not one.
5340 * It is expected that the id will immediately be used before
5341 * releasing the devlink instance lock.
5343 * Returns zero on success, or an error code if the snapshot id could not
5346 static int __devlink_snapshot_id_insert(struct devlink *devlink, u32 id)
5348 lockdep_assert_held(&devlink->lock);
5350 if (xa_load(&devlink->snapshot_ids, id))
5353 return xa_err(xa_store(&devlink->snapshot_ids, id, xa_mk_value(0),
5358 * __devlink_region_snapshot_id_get - get snapshot ID
5359 * @devlink: devlink instance
5360 * @id: storage to return snapshot id
5362 * Allocates a new snapshot id. Returns zero on success, or a negative
5363 * error on failure. Must be called while holding the devlink instance
5366 * Snapshot IDs are tracked using an xarray which stores the number of
5367 * users of the snapshot id.
5369 * Note that the caller of this function counts as a 'user', in order to
5370 * avoid race conditions. The caller must release its hold on the
5371 * snapshot by using devlink_region_snapshot_id_put.
5373 static int __devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id)
5375 lockdep_assert_held(&devlink->lock);
5377 return xa_alloc(&devlink->snapshot_ids, id, xa_mk_value(1),
5378 xa_limit_32b, GFP_KERNEL);
5382 * __devlink_region_snapshot_create - create a new snapshot
5383 * This will add a new snapshot of a region. The snapshot
5384 * will be stored on the region struct and can be accessed
5385 * from devlink. This is useful for future analyses of snapshots.
5386 * Multiple snapshots can be created on a region.
5387 * The @snapshot_id should be obtained using the getter function.
5389 * Must be called only while holding the devlink instance lock.
5391 * @region: devlink region of the snapshot
5392 * @data: snapshot data
5393 * @snapshot_id: snapshot id to be created
5396 __devlink_region_snapshot_create(struct devlink_region *region,
5397 u8 *data, u32 snapshot_id)
5399 struct devlink *devlink = region->devlink;
5400 struct devlink_snapshot *snapshot;
5403 lockdep_assert_held(&devlink->lock);
5405 /* check if region can hold one more snapshot */
5406 if (region->cur_snapshots == region->max_snapshots)
5409 if (devlink_region_snapshot_get_by_id(region, snapshot_id))
5412 snapshot = kzalloc(sizeof(*snapshot), GFP_KERNEL);
5416 err = __devlink_snapshot_id_increment(devlink, snapshot_id);
5418 goto err_snapshot_id_increment;
5420 snapshot->id = snapshot_id;
5421 snapshot->region = region;
5422 snapshot->data = data;
5424 list_add_tail(&snapshot->list, ®ion->snapshot_list);
5426 region->cur_snapshots++;
5428 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_NEW);
5431 err_snapshot_id_increment:
5436 static void devlink_region_snapshot_del(struct devlink_region *region,
5437 struct devlink_snapshot *snapshot)
5439 struct devlink *devlink = region->devlink;
5441 lockdep_assert_held(&devlink->lock);
5443 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_DEL);
5444 region->cur_snapshots--;
5445 list_del(&snapshot->list);
5446 region->ops->destructor(snapshot->data);
5447 __devlink_snapshot_id_decrement(devlink, snapshot->id);
5451 static int devlink_nl_cmd_region_get_doit(struct sk_buff *skb,
5452 struct genl_info *info)
5454 struct devlink *devlink = info->user_ptr[0];
5455 struct devlink_port *port = NULL;
5456 struct devlink_region *region;
5457 const char *region_name;
5458 struct sk_buff *msg;
5462 if (!info->attrs[DEVLINK_ATTR_REGION_NAME])
5465 if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
5466 index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
5468 port = devlink_port_get_by_index(devlink, index);
5473 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
5475 region = devlink_port_region_get_by_name(port, region_name);
5477 region = devlink_region_get_by_name(devlink, region_name);
5482 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5486 err = devlink_nl_region_fill(msg, devlink, DEVLINK_CMD_REGION_GET,
5487 info->snd_portid, info->snd_seq, 0,
5494 return genlmsg_reply(msg, info);
5497 static int devlink_nl_cmd_region_get_port_dumpit(struct sk_buff *msg,
5498 struct netlink_callback *cb,
5499 struct devlink_port *port,
5503 struct devlink_region *region;
5506 list_for_each_entry(region, &port->region_list, list) {
5511 err = devlink_nl_region_fill(msg, port->devlink,
5512 DEVLINK_CMD_REGION_GET,
5513 NETLINK_CB(cb->skb).portid,
5515 NLM_F_MULTI, region);
5525 static int devlink_nl_cmd_region_get_devlink_dumpit(struct sk_buff *msg,
5526 struct netlink_callback *cb,
5527 struct devlink *devlink,
5531 struct devlink_region *region;
5532 struct devlink_port *port;
5535 mutex_lock(&devlink->lock);
5536 list_for_each_entry(region, &devlink->region_list, list) {
5541 err = devlink_nl_region_fill(msg, devlink,
5542 DEVLINK_CMD_REGION_GET,
5543 NETLINK_CB(cb->skb).portid,
5545 NLM_F_MULTI, region);
5551 list_for_each_entry(port, &devlink->port_list, list) {
5552 err = devlink_nl_cmd_region_get_port_dumpit(msg, cb, port, idx,
5559 mutex_unlock(&devlink->lock);
5563 static int devlink_nl_cmd_region_get_dumpit(struct sk_buff *msg,
5564 struct netlink_callback *cb)
5566 struct devlink *devlink;
5567 int start = cb->args[0];
5568 unsigned long index;
5572 mutex_lock(&devlink_mutex);
5573 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
5574 if (!devlink_try_get(devlink))
5577 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
5580 err = devlink_nl_cmd_region_get_devlink_dumpit(msg, cb, devlink,
5583 devlink_put(devlink);
5588 mutex_unlock(&devlink_mutex);
5593 static int devlink_nl_cmd_region_del(struct sk_buff *skb,
5594 struct genl_info *info)
5596 struct devlink *devlink = info->user_ptr[0];
5597 struct devlink_snapshot *snapshot;
5598 struct devlink_port *port = NULL;
5599 struct devlink_region *region;
5600 const char *region_name;
5604 if (!info->attrs[DEVLINK_ATTR_REGION_NAME] ||
5605 !info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID])
5608 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
5609 snapshot_id = nla_get_u32(info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
5611 if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
5612 index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
5614 port = devlink_port_get_by_index(devlink, index);
5620 region = devlink_port_region_get_by_name(port, region_name);
5622 region = devlink_region_get_by_name(devlink, region_name);
5627 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
5631 devlink_region_snapshot_del(region, snapshot);
5636 devlink_nl_cmd_region_new(struct sk_buff *skb, struct genl_info *info)
5638 struct devlink *devlink = info->user_ptr[0];
5639 struct devlink_snapshot *snapshot;
5640 struct devlink_port *port = NULL;
5641 struct nlattr *snapshot_id_attr;
5642 struct devlink_region *region;
5643 const char *region_name;
5649 if (!info->attrs[DEVLINK_ATTR_REGION_NAME]) {
5650 NL_SET_ERR_MSG_MOD(info->extack, "No region name provided");
5654 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
5656 if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
5657 index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
5659 port = devlink_port_get_by_index(devlink, index);
5665 region = devlink_port_region_get_by_name(port, region_name);
5667 region = devlink_region_get_by_name(devlink, region_name);
5670 NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not exist");
5674 if (!region->ops->snapshot) {
5675 NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not support taking an immediate snapshot");
5679 if (region->cur_snapshots == region->max_snapshots) {
5680 NL_SET_ERR_MSG_MOD(info->extack, "The region has reached the maximum number of stored snapshots");
5684 snapshot_id_attr = info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID];
5685 if (snapshot_id_attr) {
5686 snapshot_id = nla_get_u32(snapshot_id_attr);
5688 if (devlink_region_snapshot_get_by_id(region, snapshot_id)) {
5689 NL_SET_ERR_MSG_MOD(info->extack, "The requested snapshot id is already in use");
5693 err = __devlink_snapshot_id_insert(devlink, snapshot_id);
5697 err = __devlink_region_snapshot_id_get(devlink, &snapshot_id);
5699 NL_SET_ERR_MSG_MOD(info->extack, "Failed to allocate a new snapshot id");
5705 err = region->port_ops->snapshot(port, region->port_ops,
5706 info->extack, &data);
5708 err = region->ops->snapshot(devlink, region->ops,
5709 info->extack, &data);
5711 goto err_snapshot_capture;
5713 err = __devlink_region_snapshot_create(region, data, snapshot_id);
5715 goto err_snapshot_create;
5717 if (!snapshot_id_attr) {
5718 struct sk_buff *msg;
5720 snapshot = devlink_region_snapshot_get_by_id(region,
5722 if (WARN_ON(!snapshot))
5725 msg = devlink_nl_region_notify_build(region, snapshot,
5726 DEVLINK_CMD_REGION_NEW,
5729 err = PTR_ERR_OR_ZERO(msg);
5733 err = genlmsg_reply(msg, info);
5740 err_snapshot_create:
5741 region->ops->destructor(data);
5742 err_snapshot_capture:
5743 __devlink_snapshot_id_decrement(devlink, snapshot_id);
5747 devlink_region_snapshot_del(region, snapshot);
5751 static int devlink_nl_cmd_region_read_chunk_fill(struct sk_buff *msg,
5752 struct devlink *devlink,
5753 u8 *chunk, u32 chunk_size,
5756 struct nlattr *chunk_attr;
5759 chunk_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_CHUNK);
5763 err = nla_put(msg, DEVLINK_ATTR_REGION_CHUNK_DATA, chunk_size, chunk);
5765 goto nla_put_failure;
5767 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_CHUNK_ADDR, addr,
5770 goto nla_put_failure;
5772 nla_nest_end(msg, chunk_attr);
5776 nla_nest_cancel(msg, chunk_attr);
5780 #define DEVLINK_REGION_READ_CHUNK_SIZE 256
5782 static int devlink_nl_region_read_snapshot_fill(struct sk_buff *skb,
5783 struct devlink *devlink,
5784 struct devlink_region *region,
5785 struct nlattr **attrs,
5790 struct devlink_snapshot *snapshot;
5791 u64 curr_offset = start_offset;
5795 *new_offset = start_offset;
5797 snapshot_id = nla_get_u32(attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
5798 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
5802 while (curr_offset < end_offset) {
5806 if (end_offset - curr_offset < DEVLINK_REGION_READ_CHUNK_SIZE)
5807 data_size = end_offset - curr_offset;
5809 data_size = DEVLINK_REGION_READ_CHUNK_SIZE;
5811 data = &snapshot->data[curr_offset];
5812 err = devlink_nl_cmd_region_read_chunk_fill(skb, devlink,
5818 curr_offset += data_size;
5820 *new_offset = curr_offset;
5825 static int devlink_nl_cmd_region_read_dumpit(struct sk_buff *skb,
5826 struct netlink_callback *cb)
5828 const struct genl_dumpit_info *info = genl_dumpit_info(cb);
5829 u64 ret_offset, start_offset, end_offset = U64_MAX;
5830 struct nlattr **attrs = info->attrs;
5831 struct devlink_port *port = NULL;
5832 struct devlink_region *region;
5833 struct nlattr *chunks_attr;
5834 const char *region_name;
5835 struct devlink *devlink;
5840 start_offset = *((u64 *)&cb->args[0]);
5842 mutex_lock(&devlink_mutex);
5843 devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
5844 if (IS_ERR(devlink)) {
5845 err = PTR_ERR(devlink);
5849 mutex_lock(&devlink->lock);
5851 if (!attrs[DEVLINK_ATTR_REGION_NAME] ||
5852 !attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]) {
5857 if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
5858 index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
5860 port = devlink_port_get_by_index(devlink, index);
5867 region_name = nla_data(attrs[DEVLINK_ATTR_REGION_NAME]);
5870 region = devlink_port_region_get_by_name(port, region_name);
5872 region = devlink_region_get_by_name(devlink, region_name);
5879 if (attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR] &&
5880 attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]) {
5883 nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
5885 end_offset = nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
5886 end_offset += nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]);
5889 if (end_offset > region->size)
5890 end_offset = region->size;
5892 /* return 0 if there is no further data to read */
5893 if (start_offset == end_offset) {
5898 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
5899 &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI,
5900 DEVLINK_CMD_REGION_READ);
5906 err = devlink_nl_put_handle(skb, devlink);
5908 goto nla_put_failure;
5911 err = nla_put_u32(skb, DEVLINK_ATTR_PORT_INDEX,
5912 region->port->index);
5914 goto nla_put_failure;
5917 err = nla_put_string(skb, DEVLINK_ATTR_REGION_NAME, region_name);
5919 goto nla_put_failure;
5921 chunks_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_REGION_CHUNKS);
5924 goto nla_put_failure;
5927 err = devlink_nl_region_read_snapshot_fill(skb, devlink,
5930 end_offset, &ret_offset);
5932 if (err && err != -EMSGSIZE)
5933 goto nla_put_failure;
5935 /* Check if there was any progress done to prevent infinite loop */
5936 if (ret_offset == start_offset) {
5938 goto nla_put_failure;
5941 *((u64 *)&cb->args[0]) = ret_offset;
5943 nla_nest_end(skb, chunks_attr);
5944 genlmsg_end(skb, hdr);
5945 mutex_unlock(&devlink->lock);
5946 devlink_put(devlink);
5947 mutex_unlock(&devlink_mutex);
5952 genlmsg_cancel(skb, hdr);
5954 mutex_unlock(&devlink->lock);
5955 devlink_put(devlink);
5957 mutex_unlock(&devlink_mutex);
5961 struct devlink_info_req {
5962 struct sk_buff *msg;
5965 int devlink_info_driver_name_put(struct devlink_info_req *req, const char *name)
5967 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_DRIVER_NAME, name);
5969 EXPORT_SYMBOL_GPL(devlink_info_driver_name_put);
5971 int devlink_info_serial_number_put(struct devlink_info_req *req, const char *sn)
5973 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_SERIAL_NUMBER, sn);
5975 EXPORT_SYMBOL_GPL(devlink_info_serial_number_put);
5977 int devlink_info_board_serial_number_put(struct devlink_info_req *req,
5980 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_BOARD_SERIAL_NUMBER,
5983 EXPORT_SYMBOL_GPL(devlink_info_board_serial_number_put);
5985 static int devlink_info_version_put(struct devlink_info_req *req, int attr,
5986 const char *version_name,
5987 const char *version_value)
5989 struct nlattr *nest;
5992 nest = nla_nest_start_noflag(req->msg, attr);
5996 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_NAME,
5999 goto nla_put_failure;
6001 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_VALUE,
6004 goto nla_put_failure;
6006 nla_nest_end(req->msg, nest);
6011 nla_nest_cancel(req->msg, nest);
6015 int devlink_info_version_fixed_put(struct devlink_info_req *req,
6016 const char *version_name,
6017 const char *version_value)
6019 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_FIXED,
6020 version_name, version_value);
6022 EXPORT_SYMBOL_GPL(devlink_info_version_fixed_put);
6024 int devlink_info_version_stored_put(struct devlink_info_req *req,
6025 const char *version_name,
6026 const char *version_value)
6028 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_STORED,
6029 version_name, version_value);
6031 EXPORT_SYMBOL_GPL(devlink_info_version_stored_put);
6033 int devlink_info_version_running_put(struct devlink_info_req *req,
6034 const char *version_name,
6035 const char *version_value)
6037 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_RUNNING,
6038 version_name, version_value);
6040 EXPORT_SYMBOL_GPL(devlink_info_version_running_put);
6043 devlink_nl_info_fill(struct sk_buff *msg, struct devlink *devlink,
6044 enum devlink_command cmd, u32 portid,
6045 u32 seq, int flags, struct netlink_ext_ack *extack)
6047 struct devlink_info_req req;
6051 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
6056 if (devlink_nl_put_handle(msg, devlink))
6057 goto err_cancel_msg;
6060 err = devlink->ops->info_get(devlink, &req, extack);
6062 goto err_cancel_msg;
6064 genlmsg_end(msg, hdr);
6068 genlmsg_cancel(msg, hdr);
6072 static int devlink_nl_cmd_info_get_doit(struct sk_buff *skb,
6073 struct genl_info *info)
6075 struct devlink *devlink = info->user_ptr[0];
6076 struct sk_buff *msg;
6079 if (!devlink->ops->info_get)
6082 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6086 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
6087 info->snd_portid, info->snd_seq, 0,
6094 return genlmsg_reply(msg, info);
6097 static int devlink_nl_cmd_info_get_dumpit(struct sk_buff *msg,
6098 struct netlink_callback *cb)
6100 struct devlink *devlink;
6101 int start = cb->args[0];
6102 unsigned long index;
6106 mutex_lock(&devlink_mutex);
6107 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
6108 if (!devlink_try_get(devlink))
6111 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
6114 if (idx < start || !devlink->ops->info_get)
6117 mutex_lock(&devlink->lock);
6118 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
6119 NETLINK_CB(cb->skb).portid,
6120 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6122 mutex_unlock(&devlink->lock);
6123 if (err == -EOPNOTSUPP)
6126 devlink_put(devlink);
6132 devlink_put(devlink);
6134 mutex_unlock(&devlink_mutex);
6136 if (err != -EMSGSIZE)
6143 struct devlink_fmsg_item {
6144 struct list_head list;
6151 struct devlink_fmsg {
6152 struct list_head item_list;
6153 bool putting_binary; /* This flag forces enclosing of binary data
6154 * in an array brackets. It forces using
6155 * of designated API:
6156 * devlink_fmsg_binary_pair_nest_start()
6157 * devlink_fmsg_binary_pair_nest_end()
6161 static struct devlink_fmsg *devlink_fmsg_alloc(void)
6163 struct devlink_fmsg *fmsg;
6165 fmsg = kzalloc(sizeof(*fmsg), GFP_KERNEL);
6169 INIT_LIST_HEAD(&fmsg->item_list);
6174 static void devlink_fmsg_free(struct devlink_fmsg *fmsg)
6176 struct devlink_fmsg_item *item, *tmp;
6178 list_for_each_entry_safe(item, tmp, &fmsg->item_list, list) {
6179 list_del(&item->list);
6185 static int devlink_fmsg_nest_common(struct devlink_fmsg *fmsg,
6188 struct devlink_fmsg_item *item;
6190 item = kzalloc(sizeof(*item), GFP_KERNEL);
6194 item->attrtype = attrtype;
6195 list_add_tail(&item->list, &fmsg->item_list);
6200 int devlink_fmsg_obj_nest_start(struct devlink_fmsg *fmsg)
6202 if (fmsg->putting_binary)
6205 return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_OBJ_NEST_START);
6207 EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_start);
6209 static int devlink_fmsg_nest_end(struct devlink_fmsg *fmsg)
6211 if (fmsg->putting_binary)
6214 return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_NEST_END);
6217 int devlink_fmsg_obj_nest_end(struct devlink_fmsg *fmsg)
6219 if (fmsg->putting_binary)
6222 return devlink_fmsg_nest_end(fmsg);
6224 EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_end);
6226 #define DEVLINK_FMSG_MAX_SIZE (GENLMSG_DEFAULT_SIZE - GENL_HDRLEN - NLA_HDRLEN)
6228 static int devlink_fmsg_put_name(struct devlink_fmsg *fmsg, const char *name)
6230 struct devlink_fmsg_item *item;
6232 if (fmsg->putting_binary)
6235 if (strlen(name) + 1 > DEVLINK_FMSG_MAX_SIZE)
6238 item = kzalloc(sizeof(*item) + strlen(name) + 1, GFP_KERNEL);
6242 item->nla_type = NLA_NUL_STRING;
6243 item->len = strlen(name) + 1;
6244 item->attrtype = DEVLINK_ATTR_FMSG_OBJ_NAME;
6245 memcpy(&item->value, name, item->len);
6246 list_add_tail(&item->list, &fmsg->item_list);
6251 int devlink_fmsg_pair_nest_start(struct devlink_fmsg *fmsg, const char *name)
6255 if (fmsg->putting_binary)
6258 err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_PAIR_NEST_START);
6262 err = devlink_fmsg_put_name(fmsg, name);
6268 EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_start);
6270 int devlink_fmsg_pair_nest_end(struct devlink_fmsg *fmsg)
6272 if (fmsg->putting_binary)
6275 return devlink_fmsg_nest_end(fmsg);
6277 EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_end);
6279 int devlink_fmsg_arr_pair_nest_start(struct devlink_fmsg *fmsg,
6284 if (fmsg->putting_binary)
6287 err = devlink_fmsg_pair_nest_start(fmsg, name);
6291 err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_ARR_NEST_START);
6297 EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_start);
6299 int devlink_fmsg_arr_pair_nest_end(struct devlink_fmsg *fmsg)
6303 if (fmsg->putting_binary)
6306 err = devlink_fmsg_nest_end(fmsg);
6310 err = devlink_fmsg_nest_end(fmsg);
6316 EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_end);
6318 int devlink_fmsg_binary_pair_nest_start(struct devlink_fmsg *fmsg,
6323 err = devlink_fmsg_arr_pair_nest_start(fmsg, name);
6327 fmsg->putting_binary = true;
6330 EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_start);
6332 int devlink_fmsg_binary_pair_nest_end(struct devlink_fmsg *fmsg)
6334 if (!fmsg->putting_binary)
6337 fmsg->putting_binary = false;
6338 return devlink_fmsg_arr_pair_nest_end(fmsg);
6340 EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_end);
6342 static int devlink_fmsg_put_value(struct devlink_fmsg *fmsg,
6343 const void *value, u16 value_len,
6346 struct devlink_fmsg_item *item;
6348 if (value_len > DEVLINK_FMSG_MAX_SIZE)
6351 item = kzalloc(sizeof(*item) + value_len, GFP_KERNEL);
6355 item->nla_type = value_nla_type;
6356 item->len = value_len;
6357 item->attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
6358 memcpy(&item->value, value, item->len);
6359 list_add_tail(&item->list, &fmsg->item_list);
6364 static int devlink_fmsg_bool_put(struct devlink_fmsg *fmsg, bool value)
6366 if (fmsg->putting_binary)
6369 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_FLAG);
6372 static int devlink_fmsg_u8_put(struct devlink_fmsg *fmsg, u8 value)
6374 if (fmsg->putting_binary)
6377 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U8);
6380 int devlink_fmsg_u32_put(struct devlink_fmsg *fmsg, u32 value)
6382 if (fmsg->putting_binary)
6385 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U32);
6387 EXPORT_SYMBOL_GPL(devlink_fmsg_u32_put);
6389 static int devlink_fmsg_u64_put(struct devlink_fmsg *fmsg, u64 value)
6391 if (fmsg->putting_binary)
6394 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U64);
6397 int devlink_fmsg_string_put(struct devlink_fmsg *fmsg, const char *value)
6399 if (fmsg->putting_binary)
6402 return devlink_fmsg_put_value(fmsg, value, strlen(value) + 1,
6405 EXPORT_SYMBOL_GPL(devlink_fmsg_string_put);
6407 int devlink_fmsg_binary_put(struct devlink_fmsg *fmsg, const void *value,
6410 if (!fmsg->putting_binary)
6413 return devlink_fmsg_put_value(fmsg, value, value_len, NLA_BINARY);
6415 EXPORT_SYMBOL_GPL(devlink_fmsg_binary_put);
6417 int devlink_fmsg_bool_pair_put(struct devlink_fmsg *fmsg, const char *name,
6422 err = devlink_fmsg_pair_nest_start(fmsg, name);
6426 err = devlink_fmsg_bool_put(fmsg, value);
6430 err = devlink_fmsg_pair_nest_end(fmsg);
6436 EXPORT_SYMBOL_GPL(devlink_fmsg_bool_pair_put);
6438 int devlink_fmsg_u8_pair_put(struct devlink_fmsg *fmsg, const char *name,
6443 err = devlink_fmsg_pair_nest_start(fmsg, name);
6447 err = devlink_fmsg_u8_put(fmsg, value);
6451 err = devlink_fmsg_pair_nest_end(fmsg);
6457 EXPORT_SYMBOL_GPL(devlink_fmsg_u8_pair_put);
6459 int devlink_fmsg_u32_pair_put(struct devlink_fmsg *fmsg, const char *name,
6464 err = devlink_fmsg_pair_nest_start(fmsg, name);
6468 err = devlink_fmsg_u32_put(fmsg, value);
6472 err = devlink_fmsg_pair_nest_end(fmsg);
6478 EXPORT_SYMBOL_GPL(devlink_fmsg_u32_pair_put);
6480 int devlink_fmsg_u64_pair_put(struct devlink_fmsg *fmsg, const char *name,
6485 err = devlink_fmsg_pair_nest_start(fmsg, name);
6489 err = devlink_fmsg_u64_put(fmsg, value);
6493 err = devlink_fmsg_pair_nest_end(fmsg);
6499 EXPORT_SYMBOL_GPL(devlink_fmsg_u64_pair_put);
6501 int devlink_fmsg_string_pair_put(struct devlink_fmsg *fmsg, const char *name,
6506 err = devlink_fmsg_pair_nest_start(fmsg, name);
6510 err = devlink_fmsg_string_put(fmsg, value);
6514 err = devlink_fmsg_pair_nest_end(fmsg);
6520 EXPORT_SYMBOL_GPL(devlink_fmsg_string_pair_put);
6522 int devlink_fmsg_binary_pair_put(struct devlink_fmsg *fmsg, const char *name,
6523 const void *value, u32 value_len)
6530 err = devlink_fmsg_binary_pair_nest_start(fmsg, name);
6534 for (offset = 0; offset < value_len; offset += data_size) {
6535 data_size = value_len - offset;
6536 if (data_size > DEVLINK_FMSG_MAX_SIZE)
6537 data_size = DEVLINK_FMSG_MAX_SIZE;
6538 err = devlink_fmsg_binary_put(fmsg, value + offset, data_size);
6541 /* Exit from loop with a break (instead of
6542 * return) to make sure putting_binary is turned off in
6543 * devlink_fmsg_binary_pair_nest_end
6547 end_err = devlink_fmsg_binary_pair_nest_end(fmsg);
6553 EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_put);
6556 devlink_fmsg_item_fill_type(struct devlink_fmsg_item *msg, struct sk_buff *skb)
6558 switch (msg->nla_type) {
6563 case NLA_NUL_STRING:
6565 return nla_put_u8(skb, DEVLINK_ATTR_FMSG_OBJ_VALUE_TYPE,
6573 devlink_fmsg_item_fill_data(struct devlink_fmsg_item *msg, struct sk_buff *skb)
6575 int attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
6578 switch (msg->nla_type) {
6580 /* Always provide flag data, regardless of its value */
6581 tmp = *(bool *) msg->value;
6583 return nla_put_u8(skb, attrtype, tmp);
6585 return nla_put_u8(skb, attrtype, *(u8 *) msg->value);
6587 return nla_put_u32(skb, attrtype, *(u32 *) msg->value);
6589 return nla_put_u64_64bit(skb, attrtype, *(u64 *) msg->value,
6591 case NLA_NUL_STRING:
6592 return nla_put_string(skb, attrtype, (char *) &msg->value);
6594 return nla_put(skb, attrtype, msg->len, (void *) &msg->value);
6601 devlink_fmsg_prepare_skb(struct devlink_fmsg *fmsg, struct sk_buff *skb,
6604 struct devlink_fmsg_item *item;
6605 struct nlattr *fmsg_nlattr;
6609 fmsg_nlattr = nla_nest_start_noflag(skb, DEVLINK_ATTR_FMSG);
6613 list_for_each_entry(item, &fmsg->item_list, list) {
6619 switch (item->attrtype) {
6620 case DEVLINK_ATTR_FMSG_OBJ_NEST_START:
6621 case DEVLINK_ATTR_FMSG_PAIR_NEST_START:
6622 case DEVLINK_ATTR_FMSG_ARR_NEST_START:
6623 case DEVLINK_ATTR_FMSG_NEST_END:
6624 err = nla_put_flag(skb, item->attrtype);
6626 case DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA:
6627 err = devlink_fmsg_item_fill_type(item, skb);
6630 err = devlink_fmsg_item_fill_data(item, skb);
6632 case DEVLINK_ATTR_FMSG_OBJ_NAME:
6633 err = nla_put_string(skb, item->attrtype,
6634 (char *) &item->value);
6646 nla_nest_end(skb, fmsg_nlattr);
6650 static int devlink_fmsg_snd(struct devlink_fmsg *fmsg,
6651 struct genl_info *info,
6652 enum devlink_command cmd, int flags)
6654 struct nlmsghdr *nlh;
6655 struct sk_buff *skb;
6662 int tmp_index = index;
6664 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
6668 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
6669 &devlink_nl_family, flags | NLM_F_MULTI, cmd);
6672 goto nla_put_failure;
6675 err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
6678 else if (err != -EMSGSIZE || tmp_index == index)
6679 goto nla_put_failure;
6681 genlmsg_end(skb, hdr);
6682 err = genlmsg_reply(skb, info);
6687 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
6690 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
6691 NLMSG_DONE, 0, flags | NLM_F_MULTI);
6694 goto nla_put_failure;
6697 return genlmsg_reply(skb, info);
6704 static int devlink_fmsg_dumpit(struct devlink_fmsg *fmsg, struct sk_buff *skb,
6705 struct netlink_callback *cb,
6706 enum devlink_command cmd)
6708 int index = cb->args[0];
6709 int tmp_index = index;
6713 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
6714 &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI, cmd);
6717 goto nla_put_failure;
6720 err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
6721 if ((err && err != -EMSGSIZE) || tmp_index == index)
6722 goto nla_put_failure;
6724 cb->args[0] = index;
6725 genlmsg_end(skb, hdr);
6729 genlmsg_cancel(skb, hdr);
6733 struct devlink_health_reporter {
6734 struct list_head list;
6736 const struct devlink_health_reporter_ops *ops;
6737 struct devlink *devlink;
6738 struct devlink_port *devlink_port;
6739 struct devlink_fmsg *dump_fmsg;
6740 struct mutex dump_lock; /* lock parallel read/write from dump buffers */
6741 u64 graceful_period;
6749 u64 last_recovery_ts;
6750 refcount_t refcount;
6754 devlink_health_reporter_priv(struct devlink_health_reporter *reporter)
6756 return reporter->priv;
6758 EXPORT_SYMBOL_GPL(devlink_health_reporter_priv);
6760 static struct devlink_health_reporter *
6761 __devlink_health_reporter_find_by_name(struct list_head *reporter_list,
6762 struct mutex *list_lock,
6763 const char *reporter_name)
6765 struct devlink_health_reporter *reporter;
6767 lockdep_assert_held(list_lock);
6768 list_for_each_entry(reporter, reporter_list, list)
6769 if (!strcmp(reporter->ops->name, reporter_name))
6774 static struct devlink_health_reporter *
6775 devlink_health_reporter_find_by_name(struct devlink *devlink,
6776 const char *reporter_name)
6778 return __devlink_health_reporter_find_by_name(&devlink->reporter_list,
6779 &devlink->reporters_lock,
6783 static struct devlink_health_reporter *
6784 devlink_port_health_reporter_find_by_name(struct devlink_port *devlink_port,
6785 const char *reporter_name)
6787 return __devlink_health_reporter_find_by_name(&devlink_port->reporter_list,
6788 &devlink_port->reporters_lock,
6792 static struct devlink_health_reporter *
6793 __devlink_health_reporter_create(struct devlink *devlink,
6794 const struct devlink_health_reporter_ops *ops,
6795 u64 graceful_period, void *priv)
6797 struct devlink_health_reporter *reporter;
6799 if (WARN_ON(graceful_period && !ops->recover))
6800 return ERR_PTR(-EINVAL);
6802 reporter = kzalloc(sizeof(*reporter), GFP_KERNEL);
6804 return ERR_PTR(-ENOMEM);
6806 reporter->priv = priv;
6807 reporter->ops = ops;
6808 reporter->devlink = devlink;
6809 reporter->graceful_period = graceful_period;
6810 reporter->auto_recover = !!ops->recover;
6811 reporter->auto_dump = !!ops->dump;
6812 mutex_init(&reporter->dump_lock);
6813 refcount_set(&reporter->refcount, 1);
6818 * devlink_port_health_reporter_create - create devlink health reporter for
6819 * specified port instance
6821 * @port: devlink_port which should contain the new reporter
6823 * @graceful_period: to avoid recovery loops, in msecs
6826 struct devlink_health_reporter *
6827 devlink_port_health_reporter_create(struct devlink_port *port,
6828 const struct devlink_health_reporter_ops *ops,
6829 u64 graceful_period, void *priv)
6831 struct devlink_health_reporter *reporter;
6833 mutex_lock(&port->reporters_lock);
6834 if (__devlink_health_reporter_find_by_name(&port->reporter_list,
6835 &port->reporters_lock, ops->name)) {
6836 reporter = ERR_PTR(-EEXIST);
6840 reporter = __devlink_health_reporter_create(port->devlink, ops,
6841 graceful_period, priv);
6842 if (IS_ERR(reporter))
6845 reporter->devlink_port = port;
6846 list_add_tail(&reporter->list, &port->reporter_list);
6848 mutex_unlock(&port->reporters_lock);
6851 EXPORT_SYMBOL_GPL(devlink_port_health_reporter_create);
6854 * devlink_health_reporter_create - create devlink health reporter
6858 * @graceful_period: to avoid recovery loops, in msecs
6861 struct devlink_health_reporter *
6862 devlink_health_reporter_create(struct devlink *devlink,
6863 const struct devlink_health_reporter_ops *ops,
6864 u64 graceful_period, void *priv)
6866 struct devlink_health_reporter *reporter;
6868 mutex_lock(&devlink->reporters_lock);
6869 if (devlink_health_reporter_find_by_name(devlink, ops->name)) {
6870 reporter = ERR_PTR(-EEXIST);
6874 reporter = __devlink_health_reporter_create(devlink, ops,
6875 graceful_period, priv);
6876 if (IS_ERR(reporter))
6879 list_add_tail(&reporter->list, &devlink->reporter_list);
6881 mutex_unlock(&devlink->reporters_lock);
6884 EXPORT_SYMBOL_GPL(devlink_health_reporter_create);
6887 devlink_health_reporter_free(struct devlink_health_reporter *reporter)
6889 mutex_destroy(&reporter->dump_lock);
6890 if (reporter->dump_fmsg)
6891 devlink_fmsg_free(reporter->dump_fmsg);
6896 devlink_health_reporter_put(struct devlink_health_reporter *reporter)
6898 if (refcount_dec_and_test(&reporter->refcount))
6899 devlink_health_reporter_free(reporter);
6903 __devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
6905 list_del(&reporter->list);
6906 devlink_health_reporter_put(reporter);
6910 * devlink_health_reporter_destroy - destroy devlink health reporter
6912 * @reporter: devlink health reporter to destroy
6915 devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
6917 struct mutex *lock = &reporter->devlink->reporters_lock;
6920 __devlink_health_reporter_destroy(reporter);
6923 EXPORT_SYMBOL_GPL(devlink_health_reporter_destroy);
6926 * devlink_port_health_reporter_destroy - destroy devlink port health reporter
6928 * @reporter: devlink health reporter to destroy
6931 devlink_port_health_reporter_destroy(struct devlink_health_reporter *reporter)
6933 struct mutex *lock = &reporter->devlink_port->reporters_lock;
6936 __devlink_health_reporter_destroy(reporter);
6939 EXPORT_SYMBOL_GPL(devlink_port_health_reporter_destroy);
6942 devlink_nl_health_reporter_fill(struct sk_buff *msg,
6943 struct devlink_health_reporter *reporter,
6944 enum devlink_command cmd, u32 portid,
6947 struct devlink *devlink = reporter->devlink;
6948 struct nlattr *reporter_attr;
6951 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
6955 if (devlink_nl_put_handle(msg, devlink))
6956 goto genlmsg_cancel;
6958 if (reporter->devlink_port) {
6959 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, reporter->devlink_port->index))
6960 goto genlmsg_cancel;
6962 reporter_attr = nla_nest_start_noflag(msg,
6963 DEVLINK_ATTR_HEALTH_REPORTER);
6965 goto genlmsg_cancel;
6966 if (nla_put_string(msg, DEVLINK_ATTR_HEALTH_REPORTER_NAME,
6967 reporter->ops->name))
6968 goto reporter_nest_cancel;
6969 if (nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_STATE,
6970 reporter->health_state))
6971 goto reporter_nest_cancel;
6972 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_ERR_COUNT,
6973 reporter->error_count, DEVLINK_ATTR_PAD))
6974 goto reporter_nest_cancel;
6975 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_RECOVER_COUNT,
6976 reporter->recovery_count, DEVLINK_ATTR_PAD))
6977 goto reporter_nest_cancel;
6978 if (reporter->ops->recover &&
6979 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD,
6980 reporter->graceful_period,
6982 goto reporter_nest_cancel;
6983 if (reporter->ops->recover &&
6984 nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER,
6985 reporter->auto_recover))
6986 goto reporter_nest_cancel;
6987 if (reporter->dump_fmsg &&
6988 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS,
6989 jiffies_to_msecs(reporter->dump_ts),
6991 goto reporter_nest_cancel;
6992 if (reporter->dump_fmsg &&
6993 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS_NS,
6994 reporter->dump_real_ts, DEVLINK_ATTR_PAD))
6995 goto reporter_nest_cancel;
6996 if (reporter->ops->dump &&
6997 nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP,
6998 reporter->auto_dump))
6999 goto reporter_nest_cancel;
7001 nla_nest_end(msg, reporter_attr);
7002 genlmsg_end(msg, hdr);
7005 reporter_nest_cancel:
7006 nla_nest_end(msg, reporter_attr);
7008 genlmsg_cancel(msg, hdr);
7012 static void devlink_recover_notify(struct devlink_health_reporter *reporter,
7013 enum devlink_command cmd)
7015 struct devlink *devlink = reporter->devlink;
7016 struct sk_buff *msg;
7019 WARN_ON(cmd != DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
7020 WARN_ON(!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED));
7022 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7026 err = devlink_nl_health_reporter_fill(msg, reporter, cmd, 0, 0, 0);
7032 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
7033 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
7037 devlink_health_reporter_recovery_done(struct devlink_health_reporter *reporter)
7039 reporter->recovery_count++;
7040 reporter->last_recovery_ts = jiffies;
7042 EXPORT_SYMBOL_GPL(devlink_health_reporter_recovery_done);
7045 devlink_health_reporter_recover(struct devlink_health_reporter *reporter,
7046 void *priv_ctx, struct netlink_ext_ack *extack)
7050 if (reporter->health_state == DEVLINK_HEALTH_REPORTER_STATE_HEALTHY)
7053 if (!reporter->ops->recover)
7056 err = reporter->ops->recover(reporter, priv_ctx, extack);
7060 devlink_health_reporter_recovery_done(reporter);
7061 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_HEALTHY;
7062 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
7068 devlink_health_dump_clear(struct devlink_health_reporter *reporter)
7070 if (!reporter->dump_fmsg)
7072 devlink_fmsg_free(reporter->dump_fmsg);
7073 reporter->dump_fmsg = NULL;
7076 static int devlink_health_do_dump(struct devlink_health_reporter *reporter,
7078 struct netlink_ext_ack *extack)
7082 if (!reporter->ops->dump)
7085 if (reporter->dump_fmsg)
7088 reporter->dump_fmsg = devlink_fmsg_alloc();
7089 if (!reporter->dump_fmsg) {
7094 err = devlink_fmsg_obj_nest_start(reporter->dump_fmsg);
7098 err = reporter->ops->dump(reporter, reporter->dump_fmsg,
7103 err = devlink_fmsg_obj_nest_end(reporter->dump_fmsg);
7107 reporter->dump_ts = jiffies;
7108 reporter->dump_real_ts = ktime_get_real_ns();
7113 devlink_health_dump_clear(reporter);
7117 int devlink_health_report(struct devlink_health_reporter *reporter,
7118 const char *msg, void *priv_ctx)
7120 enum devlink_health_reporter_state prev_health_state;
7121 struct devlink *devlink = reporter->devlink;
7122 unsigned long recover_ts_threshold;
7124 /* write a log message of the current error */
7126 trace_devlink_health_report(devlink, reporter->ops->name, msg);
7127 reporter->error_count++;
7128 prev_health_state = reporter->health_state;
7129 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
7130 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
7132 /* abort if the previous error wasn't recovered */
7133 recover_ts_threshold = reporter->last_recovery_ts +
7134 msecs_to_jiffies(reporter->graceful_period);
7135 if (reporter->auto_recover &&
7136 (prev_health_state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY ||
7137 (reporter->last_recovery_ts && reporter->recovery_count &&
7138 time_is_after_jiffies(recover_ts_threshold)))) {
7139 trace_devlink_health_recover_aborted(devlink,
7140 reporter->ops->name,
7141 reporter->health_state,
7143 reporter->last_recovery_ts);
7147 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
7149 if (reporter->auto_dump) {
7150 mutex_lock(&reporter->dump_lock);
7151 /* store current dump of current error, for later analysis */
7152 devlink_health_do_dump(reporter, priv_ctx, NULL);
7153 mutex_unlock(&reporter->dump_lock);
7156 if (reporter->auto_recover)
7157 return devlink_health_reporter_recover(reporter,
7162 EXPORT_SYMBOL_GPL(devlink_health_report);
7164 static struct devlink_health_reporter *
7165 devlink_health_reporter_get_from_attrs(struct devlink *devlink,
7166 struct nlattr **attrs)
7168 struct devlink_health_reporter *reporter;
7169 struct devlink_port *devlink_port;
7170 char *reporter_name;
7172 if (!attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME])
7175 reporter_name = nla_data(attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME]);
7176 devlink_port = devlink_port_get_from_attrs(devlink, attrs);
7177 if (IS_ERR(devlink_port)) {
7178 mutex_lock(&devlink->reporters_lock);
7179 reporter = devlink_health_reporter_find_by_name(devlink, reporter_name);
7181 refcount_inc(&reporter->refcount);
7182 mutex_unlock(&devlink->reporters_lock);
7184 mutex_lock(&devlink_port->reporters_lock);
7185 reporter = devlink_port_health_reporter_find_by_name(devlink_port, reporter_name);
7187 refcount_inc(&reporter->refcount);
7188 mutex_unlock(&devlink_port->reporters_lock);
7194 static struct devlink_health_reporter *
7195 devlink_health_reporter_get_from_info(struct devlink *devlink,
7196 struct genl_info *info)
7198 return devlink_health_reporter_get_from_attrs(devlink, info->attrs);
7201 static struct devlink_health_reporter *
7202 devlink_health_reporter_get_from_cb(struct netlink_callback *cb)
7204 const struct genl_dumpit_info *info = genl_dumpit_info(cb);
7205 struct devlink_health_reporter *reporter;
7206 struct nlattr **attrs = info->attrs;
7207 struct devlink *devlink;
7209 mutex_lock(&devlink_mutex);
7210 devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
7211 if (IS_ERR(devlink))
7214 reporter = devlink_health_reporter_get_from_attrs(devlink, attrs);
7215 devlink_put(devlink);
7216 mutex_unlock(&devlink_mutex);
7219 mutex_unlock(&devlink_mutex);
7224 devlink_health_reporter_state_update(struct devlink_health_reporter *reporter,
7225 enum devlink_health_reporter_state state)
7227 if (WARN_ON(state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY &&
7228 state != DEVLINK_HEALTH_REPORTER_STATE_ERROR))
7231 if (reporter->health_state == state)
7234 reporter->health_state = state;
7235 trace_devlink_health_reporter_state_update(reporter->devlink,
7236 reporter->ops->name, state);
7237 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
7239 EXPORT_SYMBOL_GPL(devlink_health_reporter_state_update);
7241 static int devlink_nl_cmd_health_reporter_get_doit(struct sk_buff *skb,
7242 struct genl_info *info)
7244 struct devlink *devlink = info->user_ptr[0];
7245 struct devlink_health_reporter *reporter;
7246 struct sk_buff *msg;
7249 reporter = devlink_health_reporter_get_from_info(devlink, info);
7253 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7259 err = devlink_nl_health_reporter_fill(msg, reporter,
7260 DEVLINK_CMD_HEALTH_REPORTER_GET,
7261 info->snd_portid, info->snd_seq,
7268 err = genlmsg_reply(msg, info);
7270 devlink_health_reporter_put(reporter);
7275 devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg,
7276 struct netlink_callback *cb)
7278 struct devlink_health_reporter *reporter;
7279 struct devlink_port *port;
7280 struct devlink *devlink;
7281 int start = cb->args[0];
7282 unsigned long index;
7286 mutex_lock(&devlink_mutex);
7287 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
7288 if (!devlink_try_get(devlink))
7291 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
7294 mutex_lock(&devlink->reporters_lock);
7295 list_for_each_entry(reporter, &devlink->reporter_list,
7301 err = devlink_nl_health_reporter_fill(
7302 msg, reporter, DEVLINK_CMD_HEALTH_REPORTER_GET,
7303 NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
7306 mutex_unlock(&devlink->reporters_lock);
7307 devlink_put(devlink);
7312 mutex_unlock(&devlink->reporters_lock);
7314 devlink_put(devlink);
7317 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
7318 if (!devlink_try_get(devlink))
7321 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
7324 mutex_lock(&devlink->lock);
7325 list_for_each_entry(port, &devlink->port_list, list) {
7326 mutex_lock(&port->reporters_lock);
7327 list_for_each_entry(reporter, &port->reporter_list, list) {
7332 err = devlink_nl_health_reporter_fill(
7334 DEVLINK_CMD_HEALTH_REPORTER_GET,
7335 NETLINK_CB(cb->skb).portid,
7336 cb->nlh->nlmsg_seq, NLM_F_MULTI);
7338 mutex_unlock(&port->reporters_lock);
7339 mutex_unlock(&devlink->lock);
7340 devlink_put(devlink);
7345 mutex_unlock(&port->reporters_lock);
7347 mutex_unlock(&devlink->lock);
7349 devlink_put(devlink);
7352 mutex_unlock(&devlink_mutex);
7359 devlink_nl_cmd_health_reporter_set_doit(struct sk_buff *skb,
7360 struct genl_info *info)
7362 struct devlink *devlink = info->user_ptr[0];
7363 struct devlink_health_reporter *reporter;
7366 reporter = devlink_health_reporter_get_from_info(devlink, info);
7370 if (!reporter->ops->recover &&
7371 (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] ||
7372 info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])) {
7376 if (!reporter->ops->dump &&
7377 info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]) {
7382 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD])
7383 reporter->graceful_period =
7384 nla_get_u64(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD]);
7386 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])
7387 reporter->auto_recover =
7388 nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER]);
7390 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP])
7391 reporter->auto_dump =
7392 nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]);
7394 devlink_health_reporter_put(reporter);
7397 devlink_health_reporter_put(reporter);
7401 static int devlink_nl_cmd_health_reporter_recover_doit(struct sk_buff *skb,
7402 struct genl_info *info)
7404 struct devlink *devlink = info->user_ptr[0];
7405 struct devlink_health_reporter *reporter;
7408 reporter = devlink_health_reporter_get_from_info(devlink, info);
7412 err = devlink_health_reporter_recover(reporter, NULL, info->extack);
7414 devlink_health_reporter_put(reporter);
7418 static int devlink_nl_cmd_health_reporter_diagnose_doit(struct sk_buff *skb,
7419 struct genl_info *info)
7421 struct devlink *devlink = info->user_ptr[0];
7422 struct devlink_health_reporter *reporter;
7423 struct devlink_fmsg *fmsg;
7426 reporter = devlink_health_reporter_get_from_info(devlink, info);
7430 if (!reporter->ops->diagnose) {
7431 devlink_health_reporter_put(reporter);
7435 fmsg = devlink_fmsg_alloc();
7437 devlink_health_reporter_put(reporter);
7441 err = devlink_fmsg_obj_nest_start(fmsg);
7445 err = reporter->ops->diagnose(reporter, fmsg, info->extack);
7449 err = devlink_fmsg_obj_nest_end(fmsg);
7453 err = devlink_fmsg_snd(fmsg, info,
7454 DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE, 0);
7457 devlink_fmsg_free(fmsg);
7458 devlink_health_reporter_put(reporter);
7463 devlink_nl_cmd_health_reporter_dump_get_dumpit(struct sk_buff *skb,
7464 struct netlink_callback *cb)
7466 struct devlink_health_reporter *reporter;
7467 u64 start = cb->args[0];
7470 reporter = devlink_health_reporter_get_from_cb(cb);
7474 if (!reporter->ops->dump) {
7478 mutex_lock(&reporter->dump_lock);
7480 err = devlink_health_do_dump(reporter, NULL, cb->extack);
7483 cb->args[1] = reporter->dump_ts;
7485 if (!reporter->dump_fmsg || cb->args[1] != reporter->dump_ts) {
7486 NL_SET_ERR_MSG_MOD(cb->extack, "Dump trampled, please retry");
7491 err = devlink_fmsg_dumpit(reporter->dump_fmsg, skb, cb,
7492 DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET);
7494 mutex_unlock(&reporter->dump_lock);
7496 devlink_health_reporter_put(reporter);
7501 devlink_nl_cmd_health_reporter_dump_clear_doit(struct sk_buff *skb,
7502 struct genl_info *info)
7504 struct devlink *devlink = info->user_ptr[0];
7505 struct devlink_health_reporter *reporter;
7507 reporter = devlink_health_reporter_get_from_info(devlink, info);
7511 if (!reporter->ops->dump) {
7512 devlink_health_reporter_put(reporter);
7516 mutex_lock(&reporter->dump_lock);
7517 devlink_health_dump_clear(reporter);
7518 mutex_unlock(&reporter->dump_lock);
7519 devlink_health_reporter_put(reporter);
7523 static int devlink_nl_cmd_health_reporter_test_doit(struct sk_buff *skb,
7524 struct genl_info *info)
7526 struct devlink *devlink = info->user_ptr[0];
7527 struct devlink_health_reporter *reporter;
7530 reporter = devlink_health_reporter_get_from_info(devlink, info);
7534 if (!reporter->ops->test) {
7535 devlink_health_reporter_put(reporter);
7539 err = reporter->ops->test(reporter, info->extack);
7541 devlink_health_reporter_put(reporter);
7545 struct devlink_stats {
7548 struct u64_stats_sync syncp;
7552 * struct devlink_trap_policer_item - Packet trap policer attributes.
7553 * @policer: Immutable packet trap policer attributes.
7554 * @rate: Rate in packets / sec.
7555 * @burst: Burst size in packets.
7556 * @list: trap_policer_list member.
7558 * Describes packet trap policer attributes. Created by devlink during trap
7559 * policer registration.
7561 struct devlink_trap_policer_item {
7562 const struct devlink_trap_policer *policer;
7565 struct list_head list;
7569 * struct devlink_trap_group_item - Packet trap group attributes.
7570 * @group: Immutable packet trap group attributes.
7571 * @policer_item: Associated policer item. Can be NULL.
7572 * @list: trap_group_list member.
7573 * @stats: Trap group statistics.
7575 * Describes packet trap group attributes. Created by devlink during trap
7576 * group registration.
7578 struct devlink_trap_group_item {
7579 const struct devlink_trap_group *group;
7580 struct devlink_trap_policer_item *policer_item;
7581 struct list_head list;
7582 struct devlink_stats __percpu *stats;
7586 * struct devlink_trap_item - Packet trap attributes.
7587 * @trap: Immutable packet trap attributes.
7588 * @group_item: Associated group item.
7589 * @list: trap_list member.
7590 * @action: Trap action.
7591 * @stats: Trap statistics.
7592 * @priv: Driver private information.
7594 * Describes both mutable and immutable packet trap attributes. Created by
7595 * devlink during trap registration and used for all trap related operations.
7597 struct devlink_trap_item {
7598 const struct devlink_trap *trap;
7599 struct devlink_trap_group_item *group_item;
7600 struct list_head list;
7601 enum devlink_trap_action action;
7602 struct devlink_stats __percpu *stats;
7606 static struct devlink_trap_policer_item *
7607 devlink_trap_policer_item_lookup(struct devlink *devlink, u32 id)
7609 struct devlink_trap_policer_item *policer_item;
7611 list_for_each_entry(policer_item, &devlink->trap_policer_list, list) {
7612 if (policer_item->policer->id == id)
7613 return policer_item;
7619 static struct devlink_trap_item *
7620 devlink_trap_item_lookup(struct devlink *devlink, const char *name)
7622 struct devlink_trap_item *trap_item;
7624 list_for_each_entry(trap_item, &devlink->trap_list, list) {
7625 if (!strcmp(trap_item->trap->name, name))
7632 static struct devlink_trap_item *
7633 devlink_trap_item_get_from_info(struct devlink *devlink,
7634 struct genl_info *info)
7636 struct nlattr *attr;
7638 if (!info->attrs[DEVLINK_ATTR_TRAP_NAME])
7640 attr = info->attrs[DEVLINK_ATTR_TRAP_NAME];
7642 return devlink_trap_item_lookup(devlink, nla_data(attr));
7646 devlink_trap_action_get_from_info(struct genl_info *info,
7647 enum devlink_trap_action *p_trap_action)
7651 val = nla_get_u8(info->attrs[DEVLINK_ATTR_TRAP_ACTION]);
7653 case DEVLINK_TRAP_ACTION_DROP:
7654 case DEVLINK_TRAP_ACTION_TRAP:
7655 case DEVLINK_TRAP_ACTION_MIRROR:
7656 *p_trap_action = val;
7665 static int devlink_trap_metadata_put(struct sk_buff *msg,
7666 const struct devlink_trap *trap)
7668 struct nlattr *attr;
7670 attr = nla_nest_start(msg, DEVLINK_ATTR_TRAP_METADATA);
7674 if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_IN_PORT) &&
7675 nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_IN_PORT))
7676 goto nla_put_failure;
7677 if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_FA_COOKIE) &&
7678 nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_FA_COOKIE))
7679 goto nla_put_failure;
7681 nla_nest_end(msg, attr);
7686 nla_nest_cancel(msg, attr);
7690 static void devlink_trap_stats_read(struct devlink_stats __percpu *trap_stats,
7691 struct devlink_stats *stats)
7695 memset(stats, 0, sizeof(*stats));
7696 for_each_possible_cpu(i) {
7697 struct devlink_stats *cpu_stats;
7698 u64 rx_packets, rx_bytes;
7701 cpu_stats = per_cpu_ptr(trap_stats, i);
7703 start = u64_stats_fetch_begin_irq(&cpu_stats->syncp);
7704 rx_packets = cpu_stats->rx_packets;
7705 rx_bytes = cpu_stats->rx_bytes;
7706 } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start));
7708 stats->rx_packets += rx_packets;
7709 stats->rx_bytes += rx_bytes;
7714 devlink_trap_group_stats_put(struct sk_buff *msg,
7715 struct devlink_stats __percpu *trap_stats)
7717 struct devlink_stats stats;
7718 struct nlattr *attr;
7720 devlink_trap_stats_read(trap_stats, &stats);
7722 attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
7726 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_PACKETS,
7727 stats.rx_packets, DEVLINK_ATTR_PAD))
7728 goto nla_put_failure;
7730 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_BYTES,
7731 stats.rx_bytes, DEVLINK_ATTR_PAD))
7732 goto nla_put_failure;
7734 nla_nest_end(msg, attr);
7739 nla_nest_cancel(msg, attr);
7743 static int devlink_trap_stats_put(struct sk_buff *msg, struct devlink *devlink,
7744 const struct devlink_trap_item *trap_item)
7746 struct devlink_stats stats;
7747 struct nlattr *attr;
7751 if (devlink->ops->trap_drop_counter_get) {
7752 err = devlink->ops->trap_drop_counter_get(devlink,
7759 devlink_trap_stats_read(trap_item->stats, &stats);
7761 attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
7765 if (devlink->ops->trap_drop_counter_get &&
7766 nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_DROPPED, drops,
7768 goto nla_put_failure;
7770 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_PACKETS,
7771 stats.rx_packets, DEVLINK_ATTR_PAD))
7772 goto nla_put_failure;
7774 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_BYTES,
7775 stats.rx_bytes, DEVLINK_ATTR_PAD))
7776 goto nla_put_failure;
7778 nla_nest_end(msg, attr);
7783 nla_nest_cancel(msg, attr);
7787 static int devlink_nl_trap_fill(struct sk_buff *msg, struct devlink *devlink,
7788 const struct devlink_trap_item *trap_item,
7789 enum devlink_command cmd, u32 portid, u32 seq,
7792 struct devlink_trap_group_item *group_item = trap_item->group_item;
7796 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
7800 if (devlink_nl_put_handle(msg, devlink))
7801 goto nla_put_failure;
7803 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
7804 group_item->group->name))
7805 goto nla_put_failure;
7807 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_NAME, trap_item->trap->name))
7808 goto nla_put_failure;
7810 if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_TYPE, trap_item->trap->type))
7811 goto nla_put_failure;
7813 if (trap_item->trap->generic &&
7814 nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
7815 goto nla_put_failure;
7817 if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_ACTION, trap_item->action))
7818 goto nla_put_failure;
7820 err = devlink_trap_metadata_put(msg, trap_item->trap);
7822 goto nla_put_failure;
7824 err = devlink_trap_stats_put(msg, devlink, trap_item);
7826 goto nla_put_failure;
7828 genlmsg_end(msg, hdr);
7833 genlmsg_cancel(msg, hdr);
7837 static int devlink_nl_cmd_trap_get_doit(struct sk_buff *skb,
7838 struct genl_info *info)
7840 struct netlink_ext_ack *extack = info->extack;
7841 struct devlink *devlink = info->user_ptr[0];
7842 struct devlink_trap_item *trap_item;
7843 struct sk_buff *msg;
7846 if (list_empty(&devlink->trap_list))
7849 trap_item = devlink_trap_item_get_from_info(devlink, info);
7851 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
7855 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7859 err = devlink_nl_trap_fill(msg, devlink, trap_item,
7860 DEVLINK_CMD_TRAP_NEW, info->snd_portid,
7865 return genlmsg_reply(msg, info);
7872 static int devlink_nl_cmd_trap_get_dumpit(struct sk_buff *msg,
7873 struct netlink_callback *cb)
7875 struct devlink_trap_item *trap_item;
7876 struct devlink *devlink;
7877 int start = cb->args[0];
7878 unsigned long index;
7882 mutex_lock(&devlink_mutex);
7883 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
7884 if (!devlink_try_get(devlink))
7887 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
7890 mutex_lock(&devlink->lock);
7891 list_for_each_entry(trap_item, &devlink->trap_list, list) {
7896 err = devlink_nl_trap_fill(msg, devlink, trap_item,
7897 DEVLINK_CMD_TRAP_NEW,
7898 NETLINK_CB(cb->skb).portid,
7902 mutex_unlock(&devlink->lock);
7903 devlink_put(devlink);
7908 mutex_unlock(&devlink->lock);
7910 devlink_put(devlink);
7913 mutex_unlock(&devlink_mutex);
7919 static int __devlink_trap_action_set(struct devlink *devlink,
7920 struct devlink_trap_item *trap_item,
7921 enum devlink_trap_action trap_action,
7922 struct netlink_ext_ack *extack)
7926 if (trap_item->action != trap_action &&
7927 trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP) {
7928 NL_SET_ERR_MSG_MOD(extack, "Cannot change action of non-drop traps. Skipping");
7932 err = devlink->ops->trap_action_set(devlink, trap_item->trap,
7933 trap_action, extack);
7937 trap_item->action = trap_action;
7942 static int devlink_trap_action_set(struct devlink *devlink,
7943 struct devlink_trap_item *trap_item,
7944 struct genl_info *info)
7946 enum devlink_trap_action trap_action;
7949 if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
7952 err = devlink_trap_action_get_from_info(info, &trap_action);
7954 NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
7958 return __devlink_trap_action_set(devlink, trap_item, trap_action,
7962 static int devlink_nl_cmd_trap_set_doit(struct sk_buff *skb,
7963 struct genl_info *info)
7965 struct netlink_ext_ack *extack = info->extack;
7966 struct devlink *devlink = info->user_ptr[0];
7967 struct devlink_trap_item *trap_item;
7969 if (list_empty(&devlink->trap_list))
7972 trap_item = devlink_trap_item_get_from_info(devlink, info);
7974 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
7978 return devlink_trap_action_set(devlink, trap_item, info);
7981 static struct devlink_trap_group_item *
7982 devlink_trap_group_item_lookup(struct devlink *devlink, const char *name)
7984 struct devlink_trap_group_item *group_item;
7986 list_for_each_entry(group_item, &devlink->trap_group_list, list) {
7987 if (!strcmp(group_item->group->name, name))
7994 static struct devlink_trap_group_item *
7995 devlink_trap_group_item_lookup_by_id(struct devlink *devlink, u16 id)
7997 struct devlink_trap_group_item *group_item;
7999 list_for_each_entry(group_item, &devlink->trap_group_list, list) {
8000 if (group_item->group->id == id)
8007 static struct devlink_trap_group_item *
8008 devlink_trap_group_item_get_from_info(struct devlink *devlink,
8009 struct genl_info *info)
8013 if (!info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME])
8015 name = nla_data(info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME]);
8017 return devlink_trap_group_item_lookup(devlink, name);
8021 devlink_nl_trap_group_fill(struct sk_buff *msg, struct devlink *devlink,
8022 const struct devlink_trap_group_item *group_item,
8023 enum devlink_command cmd, u32 portid, u32 seq,
8029 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
8033 if (devlink_nl_put_handle(msg, devlink))
8034 goto nla_put_failure;
8036 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
8037 group_item->group->name))
8038 goto nla_put_failure;
8040 if (group_item->group->generic &&
8041 nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
8042 goto nla_put_failure;
8044 if (group_item->policer_item &&
8045 nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID,
8046 group_item->policer_item->policer->id))
8047 goto nla_put_failure;
8049 err = devlink_trap_group_stats_put(msg, group_item->stats);
8051 goto nla_put_failure;
8053 genlmsg_end(msg, hdr);
8058 genlmsg_cancel(msg, hdr);
8062 static int devlink_nl_cmd_trap_group_get_doit(struct sk_buff *skb,
8063 struct genl_info *info)
8065 struct netlink_ext_ack *extack = info->extack;
8066 struct devlink *devlink = info->user_ptr[0];
8067 struct devlink_trap_group_item *group_item;
8068 struct sk_buff *msg;
8071 if (list_empty(&devlink->trap_group_list))
8074 group_item = devlink_trap_group_item_get_from_info(devlink, info);
8076 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
8080 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8084 err = devlink_nl_trap_group_fill(msg, devlink, group_item,
8085 DEVLINK_CMD_TRAP_GROUP_NEW,
8086 info->snd_portid, info->snd_seq, 0);
8088 goto err_trap_group_fill;
8090 return genlmsg_reply(msg, info);
8092 err_trap_group_fill:
8097 static int devlink_nl_cmd_trap_group_get_dumpit(struct sk_buff *msg,
8098 struct netlink_callback *cb)
8100 enum devlink_command cmd = DEVLINK_CMD_TRAP_GROUP_NEW;
8101 struct devlink_trap_group_item *group_item;
8102 u32 portid = NETLINK_CB(cb->skb).portid;
8103 struct devlink *devlink;
8104 int start = cb->args[0];
8105 unsigned long index;
8109 mutex_lock(&devlink_mutex);
8110 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
8111 if (!devlink_try_get(devlink))
8114 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
8117 mutex_lock(&devlink->lock);
8118 list_for_each_entry(group_item, &devlink->trap_group_list,
8124 err = devlink_nl_trap_group_fill(msg, devlink,
8130 mutex_unlock(&devlink->lock);
8131 devlink_put(devlink);
8136 mutex_unlock(&devlink->lock);
8138 devlink_put(devlink);
8141 mutex_unlock(&devlink_mutex);
8148 __devlink_trap_group_action_set(struct devlink *devlink,
8149 struct devlink_trap_group_item *group_item,
8150 enum devlink_trap_action trap_action,
8151 struct netlink_ext_ack *extack)
8153 const char *group_name = group_item->group->name;
8154 struct devlink_trap_item *trap_item;
8157 if (devlink->ops->trap_group_action_set) {
8158 err = devlink->ops->trap_group_action_set(devlink, group_item->group,
8159 trap_action, extack);
8163 list_for_each_entry(trap_item, &devlink->trap_list, list) {
8164 if (strcmp(trap_item->group_item->group->name, group_name))
8166 if (trap_item->action != trap_action &&
8167 trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP)
8169 trap_item->action = trap_action;
8175 list_for_each_entry(trap_item, &devlink->trap_list, list) {
8176 if (strcmp(trap_item->group_item->group->name, group_name))
8178 err = __devlink_trap_action_set(devlink, trap_item,
8179 trap_action, extack);
8188 devlink_trap_group_action_set(struct devlink *devlink,
8189 struct devlink_trap_group_item *group_item,
8190 struct genl_info *info, bool *p_modified)
8192 enum devlink_trap_action trap_action;
8195 if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
8198 err = devlink_trap_action_get_from_info(info, &trap_action);
8200 NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
8204 err = __devlink_trap_group_action_set(devlink, group_item, trap_action,
8214 static int devlink_trap_group_set(struct devlink *devlink,
8215 struct devlink_trap_group_item *group_item,
8216 struct genl_info *info)
8218 struct devlink_trap_policer_item *policer_item;
8219 struct netlink_ext_ack *extack = info->extack;
8220 const struct devlink_trap_policer *policer;
8221 struct nlattr **attrs = info->attrs;
8224 if (!attrs[DEVLINK_ATTR_TRAP_POLICER_ID])
8227 if (!devlink->ops->trap_group_set)
8230 policer_item = group_item->policer_item;
8231 if (attrs[DEVLINK_ATTR_TRAP_POLICER_ID]) {
8234 policer_id = nla_get_u32(attrs[DEVLINK_ATTR_TRAP_POLICER_ID]);
8235 policer_item = devlink_trap_policer_item_lookup(devlink,
8237 if (policer_id && !policer_item) {
8238 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
8242 policer = policer_item ? policer_item->policer : NULL;
8244 err = devlink->ops->trap_group_set(devlink, group_item->group, policer,
8249 group_item->policer_item = policer_item;
8254 static int devlink_nl_cmd_trap_group_set_doit(struct sk_buff *skb,
8255 struct genl_info *info)
8257 struct netlink_ext_ack *extack = info->extack;
8258 struct devlink *devlink = info->user_ptr[0];
8259 struct devlink_trap_group_item *group_item;
8260 bool modified = false;
8263 if (list_empty(&devlink->trap_group_list))
8266 group_item = devlink_trap_group_item_get_from_info(devlink, info);
8268 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
8272 err = devlink_trap_group_action_set(devlink, group_item, info,
8277 err = devlink_trap_group_set(devlink, group_item, info);
8279 goto err_trap_group_set;
8285 NL_SET_ERR_MSG_MOD(extack, "Trap group set failed, but some changes were committed already");
8289 static struct devlink_trap_policer_item *
8290 devlink_trap_policer_item_get_from_info(struct devlink *devlink,
8291 struct genl_info *info)
8295 if (!info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID])
8297 id = nla_get_u32(info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID]);
8299 return devlink_trap_policer_item_lookup(devlink, id);
8303 devlink_trap_policer_stats_put(struct sk_buff *msg, struct devlink *devlink,
8304 const struct devlink_trap_policer *policer)
8306 struct nlattr *attr;
8310 if (!devlink->ops->trap_policer_counter_get)
8313 err = devlink->ops->trap_policer_counter_get(devlink, policer, &drops);
8317 attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
8321 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_DROPPED, drops,
8323 goto nla_put_failure;
8325 nla_nest_end(msg, attr);
8330 nla_nest_cancel(msg, attr);
8335 devlink_nl_trap_policer_fill(struct sk_buff *msg, struct devlink *devlink,
8336 const struct devlink_trap_policer_item *policer_item,
8337 enum devlink_command cmd, u32 portid, u32 seq,
8343 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
8347 if (devlink_nl_put_handle(msg, devlink))
8348 goto nla_put_failure;
8350 if (nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID,
8351 policer_item->policer->id))
8352 goto nla_put_failure;
8354 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_RATE,
8355 policer_item->rate, DEVLINK_ATTR_PAD))
8356 goto nla_put_failure;
8358 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_BURST,
8359 policer_item->burst, DEVLINK_ATTR_PAD))
8360 goto nla_put_failure;
8362 err = devlink_trap_policer_stats_put(msg, devlink,
8363 policer_item->policer);
8365 goto nla_put_failure;
8367 genlmsg_end(msg, hdr);
8372 genlmsg_cancel(msg, hdr);
8376 static int devlink_nl_cmd_trap_policer_get_doit(struct sk_buff *skb,
8377 struct genl_info *info)
8379 struct devlink_trap_policer_item *policer_item;
8380 struct netlink_ext_ack *extack = info->extack;
8381 struct devlink *devlink = info->user_ptr[0];
8382 struct sk_buff *msg;
8385 if (list_empty(&devlink->trap_policer_list))
8388 policer_item = devlink_trap_policer_item_get_from_info(devlink, info);
8389 if (!policer_item) {
8390 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
8394 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8398 err = devlink_nl_trap_policer_fill(msg, devlink, policer_item,
8399 DEVLINK_CMD_TRAP_POLICER_NEW,
8400 info->snd_portid, info->snd_seq, 0);
8402 goto err_trap_policer_fill;
8404 return genlmsg_reply(msg, info);
8406 err_trap_policer_fill:
8411 static int devlink_nl_cmd_trap_policer_get_dumpit(struct sk_buff *msg,
8412 struct netlink_callback *cb)
8414 enum devlink_command cmd = DEVLINK_CMD_TRAP_POLICER_NEW;
8415 struct devlink_trap_policer_item *policer_item;
8416 u32 portid = NETLINK_CB(cb->skb).portid;
8417 struct devlink *devlink;
8418 int start = cb->args[0];
8419 unsigned long index;
8423 mutex_lock(&devlink_mutex);
8424 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
8425 if (!devlink_try_get(devlink))
8428 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
8431 mutex_lock(&devlink->lock);
8432 list_for_each_entry(policer_item, &devlink->trap_policer_list,
8438 err = devlink_nl_trap_policer_fill(msg, devlink,
8444 mutex_unlock(&devlink->lock);
8445 devlink_put(devlink);
8450 mutex_unlock(&devlink->lock);
8452 devlink_put(devlink);
8455 mutex_unlock(&devlink_mutex);
8462 devlink_trap_policer_set(struct devlink *devlink,
8463 struct devlink_trap_policer_item *policer_item,
8464 struct genl_info *info)
8466 struct netlink_ext_ack *extack = info->extack;
8467 struct nlattr **attrs = info->attrs;
8471 rate = policer_item->rate;
8472 burst = policer_item->burst;
8474 if (attrs[DEVLINK_ATTR_TRAP_POLICER_RATE])
8475 rate = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_RATE]);
8477 if (attrs[DEVLINK_ATTR_TRAP_POLICER_BURST])
8478 burst = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_BURST]);
8480 if (rate < policer_item->policer->min_rate) {
8481 NL_SET_ERR_MSG_MOD(extack, "Policer rate lower than limit");
8485 if (rate > policer_item->policer->max_rate) {
8486 NL_SET_ERR_MSG_MOD(extack, "Policer rate higher than limit");
8490 if (burst < policer_item->policer->min_burst) {
8491 NL_SET_ERR_MSG_MOD(extack, "Policer burst size lower than limit");
8495 if (burst > policer_item->policer->max_burst) {
8496 NL_SET_ERR_MSG_MOD(extack, "Policer burst size higher than limit");
8500 err = devlink->ops->trap_policer_set(devlink, policer_item->policer,
8501 rate, burst, info->extack);
8505 policer_item->rate = rate;
8506 policer_item->burst = burst;
8511 static int devlink_nl_cmd_trap_policer_set_doit(struct sk_buff *skb,
8512 struct genl_info *info)
8514 struct devlink_trap_policer_item *policer_item;
8515 struct netlink_ext_ack *extack = info->extack;
8516 struct devlink *devlink = info->user_ptr[0];
8518 if (list_empty(&devlink->trap_policer_list))
8521 if (!devlink->ops->trap_policer_set)
8524 policer_item = devlink_trap_policer_item_get_from_info(devlink, info);
8525 if (!policer_item) {
8526 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
8530 return devlink_trap_policer_set(devlink, policer_item, info);
8533 static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = {
8534 [DEVLINK_ATTR_UNSPEC] = { .strict_start_type =
8535 DEVLINK_ATTR_TRAP_POLICER_ID },
8536 [DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING },
8537 [DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING },
8538 [DEVLINK_ATTR_PORT_INDEX] = { .type = NLA_U32 },
8539 [DEVLINK_ATTR_PORT_TYPE] = NLA_POLICY_RANGE(NLA_U16, DEVLINK_PORT_TYPE_AUTO,
8540 DEVLINK_PORT_TYPE_IB),
8541 [DEVLINK_ATTR_PORT_SPLIT_COUNT] = { .type = NLA_U32 },
8542 [DEVLINK_ATTR_SB_INDEX] = { .type = NLA_U32 },
8543 [DEVLINK_ATTR_SB_POOL_INDEX] = { .type = NLA_U16 },
8544 [DEVLINK_ATTR_SB_POOL_TYPE] = { .type = NLA_U8 },
8545 [DEVLINK_ATTR_SB_POOL_SIZE] = { .type = NLA_U32 },
8546 [DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE] = { .type = NLA_U8 },
8547 [DEVLINK_ATTR_SB_THRESHOLD] = { .type = NLA_U32 },
8548 [DEVLINK_ATTR_SB_TC_INDEX] = { .type = NLA_U16 },
8549 [DEVLINK_ATTR_ESWITCH_MODE] = NLA_POLICY_RANGE(NLA_U16, DEVLINK_ESWITCH_MODE_LEGACY,
8550 DEVLINK_ESWITCH_MODE_SWITCHDEV),
8551 [DEVLINK_ATTR_ESWITCH_INLINE_MODE] = { .type = NLA_U8 },
8552 [DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = { .type = NLA_U8 },
8553 [DEVLINK_ATTR_DPIPE_TABLE_NAME] = { .type = NLA_NUL_STRING },
8554 [DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED] = { .type = NLA_U8 },
8555 [DEVLINK_ATTR_RESOURCE_ID] = { .type = NLA_U64},
8556 [DEVLINK_ATTR_RESOURCE_SIZE] = { .type = NLA_U64},
8557 [DEVLINK_ATTR_PARAM_NAME] = { .type = NLA_NUL_STRING },
8558 [DEVLINK_ATTR_PARAM_TYPE] = { .type = NLA_U8 },
8559 [DEVLINK_ATTR_PARAM_VALUE_CMODE] = { .type = NLA_U8 },
8560 [DEVLINK_ATTR_REGION_NAME] = { .type = NLA_NUL_STRING },
8561 [DEVLINK_ATTR_REGION_SNAPSHOT_ID] = { .type = NLA_U32 },
8562 [DEVLINK_ATTR_REGION_CHUNK_ADDR] = { .type = NLA_U64 },
8563 [DEVLINK_ATTR_REGION_CHUNK_LEN] = { .type = NLA_U64 },
8564 [DEVLINK_ATTR_HEALTH_REPORTER_NAME] = { .type = NLA_NUL_STRING },
8565 [DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] = { .type = NLA_U64 },
8566 [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER] = { .type = NLA_U8 },
8567 [DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME] = { .type = NLA_NUL_STRING },
8568 [DEVLINK_ATTR_FLASH_UPDATE_COMPONENT] = { .type = NLA_NUL_STRING },
8569 [DEVLINK_ATTR_FLASH_UPDATE_OVERWRITE_MASK] =
8570 NLA_POLICY_BITFIELD32(DEVLINK_SUPPORTED_FLASH_OVERWRITE_SECTIONS),
8571 [DEVLINK_ATTR_TRAP_NAME] = { .type = NLA_NUL_STRING },
8572 [DEVLINK_ATTR_TRAP_ACTION] = { .type = NLA_U8 },
8573 [DEVLINK_ATTR_TRAP_GROUP_NAME] = { .type = NLA_NUL_STRING },
8574 [DEVLINK_ATTR_NETNS_PID] = { .type = NLA_U32 },
8575 [DEVLINK_ATTR_NETNS_FD] = { .type = NLA_U32 },
8576 [DEVLINK_ATTR_NETNS_ID] = { .type = NLA_U32 },
8577 [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP] = { .type = NLA_U8 },
8578 [DEVLINK_ATTR_TRAP_POLICER_ID] = { .type = NLA_U32 },
8579 [DEVLINK_ATTR_TRAP_POLICER_RATE] = { .type = NLA_U64 },
8580 [DEVLINK_ATTR_TRAP_POLICER_BURST] = { .type = NLA_U64 },
8581 [DEVLINK_ATTR_PORT_FUNCTION] = { .type = NLA_NESTED },
8582 [DEVLINK_ATTR_RELOAD_ACTION] = NLA_POLICY_RANGE(NLA_U8, DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
8583 DEVLINK_RELOAD_ACTION_MAX),
8584 [DEVLINK_ATTR_RELOAD_LIMITS] = NLA_POLICY_BITFIELD32(DEVLINK_RELOAD_LIMITS_VALID_MASK),
8585 [DEVLINK_ATTR_PORT_FLAVOUR] = { .type = NLA_U16 },
8586 [DEVLINK_ATTR_PORT_PCI_PF_NUMBER] = { .type = NLA_U16 },
8587 [DEVLINK_ATTR_PORT_PCI_SF_NUMBER] = { .type = NLA_U32 },
8588 [DEVLINK_ATTR_PORT_CONTROLLER_NUMBER] = { .type = NLA_U32 },
8589 [DEVLINK_ATTR_RATE_TYPE] = { .type = NLA_U16 },
8590 [DEVLINK_ATTR_RATE_TX_SHARE] = { .type = NLA_U64 },
8591 [DEVLINK_ATTR_RATE_TX_MAX] = { .type = NLA_U64 },
8592 [DEVLINK_ATTR_RATE_NODE_NAME] = { .type = NLA_NUL_STRING },
8593 [DEVLINK_ATTR_RATE_PARENT_NODE_NAME] = { .type = NLA_NUL_STRING },
8596 static const struct genl_small_ops devlink_nl_ops[] = {
8598 .cmd = DEVLINK_CMD_GET,
8599 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8600 .doit = devlink_nl_cmd_get_doit,
8601 .dumpit = devlink_nl_cmd_get_dumpit,
8602 /* can be retrieved by unprivileged users */
8605 .cmd = DEVLINK_CMD_PORT_GET,
8606 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8607 .doit = devlink_nl_cmd_port_get_doit,
8608 .dumpit = devlink_nl_cmd_port_get_dumpit,
8609 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
8610 /* can be retrieved by unprivileged users */
8613 .cmd = DEVLINK_CMD_PORT_SET,
8614 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8615 .doit = devlink_nl_cmd_port_set_doit,
8616 .flags = GENL_ADMIN_PERM,
8617 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
8620 .cmd = DEVLINK_CMD_RATE_GET,
8621 .doit = devlink_nl_cmd_rate_get_doit,
8622 .dumpit = devlink_nl_cmd_rate_get_dumpit,
8623 .internal_flags = DEVLINK_NL_FLAG_NEED_RATE,
8624 /* can be retrieved by unprivileged users */
8627 .cmd = DEVLINK_CMD_RATE_SET,
8628 .doit = devlink_nl_cmd_rate_set_doit,
8629 .flags = GENL_ADMIN_PERM,
8630 .internal_flags = DEVLINK_NL_FLAG_NEED_RATE,
8633 .cmd = DEVLINK_CMD_RATE_NEW,
8634 .doit = devlink_nl_cmd_rate_new_doit,
8635 .flags = GENL_ADMIN_PERM,
8638 .cmd = DEVLINK_CMD_RATE_DEL,
8639 .doit = devlink_nl_cmd_rate_del_doit,
8640 .flags = GENL_ADMIN_PERM,
8641 .internal_flags = DEVLINK_NL_FLAG_NEED_RATE_NODE,
8644 .cmd = DEVLINK_CMD_PORT_SPLIT,
8645 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8646 .doit = devlink_nl_cmd_port_split_doit,
8647 .flags = GENL_ADMIN_PERM,
8648 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
8651 .cmd = DEVLINK_CMD_PORT_UNSPLIT,
8652 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8653 .doit = devlink_nl_cmd_port_unsplit_doit,
8654 .flags = GENL_ADMIN_PERM,
8655 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
8658 .cmd = DEVLINK_CMD_PORT_NEW,
8659 .doit = devlink_nl_cmd_port_new_doit,
8660 .flags = GENL_ADMIN_PERM,
8661 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
8664 .cmd = DEVLINK_CMD_PORT_DEL,
8665 .doit = devlink_nl_cmd_port_del_doit,
8666 .flags = GENL_ADMIN_PERM,
8667 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
8670 .cmd = DEVLINK_CMD_SB_GET,
8671 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8672 .doit = devlink_nl_cmd_sb_get_doit,
8673 .dumpit = devlink_nl_cmd_sb_get_dumpit,
8674 /* can be retrieved by unprivileged users */
8677 .cmd = DEVLINK_CMD_SB_POOL_GET,
8678 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8679 .doit = devlink_nl_cmd_sb_pool_get_doit,
8680 .dumpit = devlink_nl_cmd_sb_pool_get_dumpit,
8681 /* can be retrieved by unprivileged users */
8684 .cmd = DEVLINK_CMD_SB_POOL_SET,
8685 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8686 .doit = devlink_nl_cmd_sb_pool_set_doit,
8687 .flags = GENL_ADMIN_PERM,
8690 .cmd = DEVLINK_CMD_SB_PORT_POOL_GET,
8691 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8692 .doit = devlink_nl_cmd_sb_port_pool_get_doit,
8693 .dumpit = devlink_nl_cmd_sb_port_pool_get_dumpit,
8694 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
8695 /* can be retrieved by unprivileged users */
8698 .cmd = DEVLINK_CMD_SB_PORT_POOL_SET,
8699 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8700 .doit = devlink_nl_cmd_sb_port_pool_set_doit,
8701 .flags = GENL_ADMIN_PERM,
8702 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
8705 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_GET,
8706 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8707 .doit = devlink_nl_cmd_sb_tc_pool_bind_get_doit,
8708 .dumpit = devlink_nl_cmd_sb_tc_pool_bind_get_dumpit,
8709 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
8710 /* can be retrieved by unprivileged users */
8713 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_SET,
8714 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8715 .doit = devlink_nl_cmd_sb_tc_pool_bind_set_doit,
8716 .flags = GENL_ADMIN_PERM,
8717 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
8720 .cmd = DEVLINK_CMD_SB_OCC_SNAPSHOT,
8721 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8722 .doit = devlink_nl_cmd_sb_occ_snapshot_doit,
8723 .flags = GENL_ADMIN_PERM,
8726 .cmd = DEVLINK_CMD_SB_OCC_MAX_CLEAR,
8727 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8728 .doit = devlink_nl_cmd_sb_occ_max_clear_doit,
8729 .flags = GENL_ADMIN_PERM,
8732 .cmd = DEVLINK_CMD_ESWITCH_GET,
8733 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8734 .doit = devlink_nl_cmd_eswitch_get_doit,
8735 .flags = GENL_ADMIN_PERM,
8736 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
8739 .cmd = DEVLINK_CMD_ESWITCH_SET,
8740 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8741 .doit = devlink_nl_cmd_eswitch_set_doit,
8742 .flags = GENL_ADMIN_PERM,
8743 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
8746 .cmd = DEVLINK_CMD_DPIPE_TABLE_GET,
8747 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8748 .doit = devlink_nl_cmd_dpipe_table_get,
8749 /* can be retrieved by unprivileged users */
8752 .cmd = DEVLINK_CMD_DPIPE_ENTRIES_GET,
8753 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8754 .doit = devlink_nl_cmd_dpipe_entries_get,
8755 /* can be retrieved by unprivileged users */
8758 .cmd = DEVLINK_CMD_DPIPE_HEADERS_GET,
8759 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8760 .doit = devlink_nl_cmd_dpipe_headers_get,
8761 /* can be retrieved by unprivileged users */
8764 .cmd = DEVLINK_CMD_DPIPE_TABLE_COUNTERS_SET,
8765 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8766 .doit = devlink_nl_cmd_dpipe_table_counters_set,
8767 .flags = GENL_ADMIN_PERM,
8770 .cmd = DEVLINK_CMD_RESOURCE_SET,
8771 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8772 .doit = devlink_nl_cmd_resource_set,
8773 .flags = GENL_ADMIN_PERM,
8776 .cmd = DEVLINK_CMD_RESOURCE_DUMP,
8777 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8778 .doit = devlink_nl_cmd_resource_dump,
8779 /* can be retrieved by unprivileged users */
8782 .cmd = DEVLINK_CMD_RELOAD,
8783 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8784 .doit = devlink_nl_cmd_reload,
8785 .flags = GENL_ADMIN_PERM,
8786 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
8789 .cmd = DEVLINK_CMD_PARAM_GET,
8790 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8791 .doit = devlink_nl_cmd_param_get_doit,
8792 .dumpit = devlink_nl_cmd_param_get_dumpit,
8793 /* can be retrieved by unprivileged users */
8796 .cmd = DEVLINK_CMD_PARAM_SET,
8797 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8798 .doit = devlink_nl_cmd_param_set_doit,
8799 .flags = GENL_ADMIN_PERM,
8802 .cmd = DEVLINK_CMD_PORT_PARAM_GET,
8803 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8804 .doit = devlink_nl_cmd_port_param_get_doit,
8805 .dumpit = devlink_nl_cmd_port_param_get_dumpit,
8806 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
8807 /* can be retrieved by unprivileged users */
8810 .cmd = DEVLINK_CMD_PORT_PARAM_SET,
8811 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8812 .doit = devlink_nl_cmd_port_param_set_doit,
8813 .flags = GENL_ADMIN_PERM,
8814 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
8817 .cmd = DEVLINK_CMD_REGION_GET,
8818 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8819 .doit = devlink_nl_cmd_region_get_doit,
8820 .dumpit = devlink_nl_cmd_region_get_dumpit,
8821 .flags = GENL_ADMIN_PERM,
8824 .cmd = DEVLINK_CMD_REGION_NEW,
8825 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8826 .doit = devlink_nl_cmd_region_new,
8827 .flags = GENL_ADMIN_PERM,
8830 .cmd = DEVLINK_CMD_REGION_DEL,
8831 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8832 .doit = devlink_nl_cmd_region_del,
8833 .flags = GENL_ADMIN_PERM,
8836 .cmd = DEVLINK_CMD_REGION_READ,
8837 .validate = GENL_DONT_VALIDATE_STRICT |
8838 GENL_DONT_VALIDATE_DUMP_STRICT,
8839 .dumpit = devlink_nl_cmd_region_read_dumpit,
8840 .flags = GENL_ADMIN_PERM,
8843 .cmd = DEVLINK_CMD_INFO_GET,
8844 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8845 .doit = devlink_nl_cmd_info_get_doit,
8846 .dumpit = devlink_nl_cmd_info_get_dumpit,
8847 /* can be retrieved by unprivileged users */
8850 .cmd = DEVLINK_CMD_HEALTH_REPORTER_GET,
8851 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8852 .doit = devlink_nl_cmd_health_reporter_get_doit,
8853 .dumpit = devlink_nl_cmd_health_reporter_get_dumpit,
8854 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
8855 DEVLINK_NL_FLAG_NO_LOCK,
8856 /* can be retrieved by unprivileged users */
8859 .cmd = DEVLINK_CMD_HEALTH_REPORTER_SET,
8860 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8861 .doit = devlink_nl_cmd_health_reporter_set_doit,
8862 .flags = GENL_ADMIN_PERM,
8863 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
8864 DEVLINK_NL_FLAG_NO_LOCK,
8867 .cmd = DEVLINK_CMD_HEALTH_REPORTER_RECOVER,
8868 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8869 .doit = devlink_nl_cmd_health_reporter_recover_doit,
8870 .flags = GENL_ADMIN_PERM,
8871 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
8872 DEVLINK_NL_FLAG_NO_LOCK,
8875 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE,
8876 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8877 .doit = devlink_nl_cmd_health_reporter_diagnose_doit,
8878 .flags = GENL_ADMIN_PERM,
8879 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
8880 DEVLINK_NL_FLAG_NO_LOCK,
8883 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET,
8884 .validate = GENL_DONT_VALIDATE_STRICT |
8885 GENL_DONT_VALIDATE_DUMP_STRICT,
8886 .dumpit = devlink_nl_cmd_health_reporter_dump_get_dumpit,
8887 .flags = GENL_ADMIN_PERM,
8890 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_CLEAR,
8891 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8892 .doit = devlink_nl_cmd_health_reporter_dump_clear_doit,
8893 .flags = GENL_ADMIN_PERM,
8894 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
8895 DEVLINK_NL_FLAG_NO_LOCK,
8898 .cmd = DEVLINK_CMD_HEALTH_REPORTER_TEST,
8899 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8900 .doit = devlink_nl_cmd_health_reporter_test_doit,
8901 .flags = GENL_ADMIN_PERM,
8902 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
8903 DEVLINK_NL_FLAG_NO_LOCK,
8906 .cmd = DEVLINK_CMD_FLASH_UPDATE,
8907 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8908 .doit = devlink_nl_cmd_flash_update,
8909 .flags = GENL_ADMIN_PERM,
8912 .cmd = DEVLINK_CMD_TRAP_GET,
8913 .doit = devlink_nl_cmd_trap_get_doit,
8914 .dumpit = devlink_nl_cmd_trap_get_dumpit,
8915 /* can be retrieved by unprivileged users */
8918 .cmd = DEVLINK_CMD_TRAP_SET,
8919 .doit = devlink_nl_cmd_trap_set_doit,
8920 .flags = GENL_ADMIN_PERM,
8923 .cmd = DEVLINK_CMD_TRAP_GROUP_GET,
8924 .doit = devlink_nl_cmd_trap_group_get_doit,
8925 .dumpit = devlink_nl_cmd_trap_group_get_dumpit,
8926 /* can be retrieved by unprivileged users */
8929 .cmd = DEVLINK_CMD_TRAP_GROUP_SET,
8930 .doit = devlink_nl_cmd_trap_group_set_doit,
8931 .flags = GENL_ADMIN_PERM,
8934 .cmd = DEVLINK_CMD_TRAP_POLICER_GET,
8935 .doit = devlink_nl_cmd_trap_policer_get_doit,
8936 .dumpit = devlink_nl_cmd_trap_policer_get_dumpit,
8937 /* can be retrieved by unprivileged users */
8940 .cmd = DEVLINK_CMD_TRAP_POLICER_SET,
8941 .doit = devlink_nl_cmd_trap_policer_set_doit,
8942 .flags = GENL_ADMIN_PERM,
8946 static struct genl_family devlink_nl_family __ro_after_init = {
8947 .name = DEVLINK_GENL_NAME,
8948 .version = DEVLINK_GENL_VERSION,
8949 .maxattr = DEVLINK_ATTR_MAX,
8950 .policy = devlink_nl_policy,
8952 .pre_doit = devlink_nl_pre_doit,
8953 .post_doit = devlink_nl_post_doit,
8954 .module = THIS_MODULE,
8955 .small_ops = devlink_nl_ops,
8956 .n_small_ops = ARRAY_SIZE(devlink_nl_ops),
8957 .mcgrps = devlink_nl_mcgrps,
8958 .n_mcgrps = ARRAY_SIZE(devlink_nl_mcgrps),
8961 static bool devlink_reload_actions_valid(const struct devlink_ops *ops)
8963 const struct devlink_reload_combination *comb;
8966 if (!devlink_reload_supported(ops)) {
8967 if (WARN_ON(ops->reload_actions))
8972 if (WARN_ON(!ops->reload_actions ||
8973 ops->reload_actions & BIT(DEVLINK_RELOAD_ACTION_UNSPEC) ||
8974 ops->reload_actions >= BIT(__DEVLINK_RELOAD_ACTION_MAX)))
8977 if (WARN_ON(ops->reload_limits & BIT(DEVLINK_RELOAD_LIMIT_UNSPEC) ||
8978 ops->reload_limits >= BIT(__DEVLINK_RELOAD_LIMIT_MAX)))
8981 for (i = 0; i < ARRAY_SIZE(devlink_reload_invalid_combinations); i++) {
8982 comb = &devlink_reload_invalid_combinations[i];
8983 if (ops->reload_actions == BIT(comb->action) &&
8984 ops->reload_limits == BIT(comb->limit))
8991 * devlink_set_features - Set devlink supported features
8994 * @features: devlink support features
8996 * This interface allows us to set reload ops separatelly from
8997 * the devlink_alloc.
8999 void devlink_set_features(struct devlink *devlink, u64 features)
9001 ASSERT_DEVLINK_NOT_REGISTERED(devlink);
9003 WARN_ON(features & DEVLINK_F_RELOAD &&
9004 !devlink_reload_supported(devlink->ops));
9005 devlink->features = features;
9007 EXPORT_SYMBOL_GPL(devlink_set_features);
9010 * devlink_alloc_ns - Allocate new devlink instance resources
9011 * in specific namespace
9014 * @priv_size: size of user private data
9015 * @net: net namespace
9016 * @dev: parent device
9018 * Allocate new devlink instance resources, including devlink index
9021 struct devlink *devlink_alloc_ns(const struct devlink_ops *ops,
9022 size_t priv_size, struct net *net,
9025 struct devlink *devlink;
9029 WARN_ON(!ops || !dev);
9030 if (!devlink_reload_actions_valid(ops))
9033 devlink = kzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL);
9037 ret = xa_alloc_cyclic(&devlinks, &devlink->index, devlink, xa_limit_31b,
9038 &last_id, GFP_KERNEL);
9046 xa_init_flags(&devlink->snapshot_ids, XA_FLAGS_ALLOC);
9047 write_pnet(&devlink->_net, net);
9048 INIT_LIST_HEAD(&devlink->port_list);
9049 INIT_LIST_HEAD(&devlink->rate_list);
9050 INIT_LIST_HEAD(&devlink->sb_list);
9051 INIT_LIST_HEAD_RCU(&devlink->dpipe_table_list);
9052 INIT_LIST_HEAD(&devlink->resource_list);
9053 INIT_LIST_HEAD(&devlink->param_list);
9054 INIT_LIST_HEAD(&devlink->region_list);
9055 INIT_LIST_HEAD(&devlink->reporter_list);
9056 INIT_LIST_HEAD(&devlink->trap_list);
9057 INIT_LIST_HEAD(&devlink->trap_group_list);
9058 INIT_LIST_HEAD(&devlink->trap_policer_list);
9059 mutex_init(&devlink->lock);
9060 mutex_init(&devlink->reporters_lock);
9061 refcount_set(&devlink->refcount, 1);
9062 init_completion(&devlink->comp);
9066 EXPORT_SYMBOL_GPL(devlink_alloc_ns);
9069 devlink_trap_policer_notify(struct devlink *devlink,
9070 const struct devlink_trap_policer_item *policer_item,
9071 enum devlink_command cmd);
9073 devlink_trap_group_notify(struct devlink *devlink,
9074 const struct devlink_trap_group_item *group_item,
9075 enum devlink_command cmd);
9076 static void devlink_trap_notify(struct devlink *devlink,
9077 const struct devlink_trap_item *trap_item,
9078 enum devlink_command cmd);
9080 static void devlink_notify_register(struct devlink *devlink)
9082 struct devlink_trap_policer_item *policer_item;
9083 struct devlink_trap_group_item *group_item;
9084 struct devlink_param_item *param_item;
9085 struct devlink_trap_item *trap_item;
9086 struct devlink_port *devlink_port;
9087 struct devlink_rate *rate_node;
9088 struct devlink_region *region;
9090 devlink_notify(devlink, DEVLINK_CMD_NEW);
9091 list_for_each_entry(devlink_port, &devlink->port_list, list)
9092 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
9094 list_for_each_entry(policer_item, &devlink->trap_policer_list, list)
9095 devlink_trap_policer_notify(devlink, policer_item,
9096 DEVLINK_CMD_TRAP_POLICER_NEW);
9098 list_for_each_entry(group_item, &devlink->trap_group_list, list)
9099 devlink_trap_group_notify(devlink, group_item,
9100 DEVLINK_CMD_TRAP_GROUP_NEW);
9102 list_for_each_entry(trap_item, &devlink->trap_list, list)
9103 devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_NEW);
9105 list_for_each_entry(rate_node, &devlink->rate_list, list)
9106 devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_NEW);
9108 list_for_each_entry(region, &devlink->region_list, list)
9109 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
9111 list_for_each_entry(param_item, &devlink->param_list, list)
9112 devlink_param_notify(devlink, 0, param_item,
9113 DEVLINK_CMD_PARAM_NEW);
9116 static void devlink_notify_unregister(struct devlink *devlink)
9118 struct devlink_trap_policer_item *policer_item;
9119 struct devlink_trap_group_item *group_item;
9120 struct devlink_param_item *param_item;
9121 struct devlink_trap_item *trap_item;
9122 struct devlink_port *devlink_port;
9123 struct devlink_rate *rate_node;
9124 struct devlink_region *region;
9126 list_for_each_entry_reverse(param_item, &devlink->param_list, list)
9127 devlink_param_notify(devlink, 0, param_item,
9128 DEVLINK_CMD_PARAM_DEL);
9130 list_for_each_entry_reverse(region, &devlink->region_list, list)
9131 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL);
9133 list_for_each_entry_reverse(rate_node, &devlink->rate_list, list)
9134 devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_DEL);
9136 list_for_each_entry_reverse(trap_item, &devlink->trap_list, list)
9137 devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_DEL);
9139 list_for_each_entry_reverse(group_item, &devlink->trap_group_list, list)
9140 devlink_trap_group_notify(devlink, group_item,
9141 DEVLINK_CMD_TRAP_GROUP_DEL);
9142 list_for_each_entry_reverse(policer_item, &devlink->trap_policer_list,
9144 devlink_trap_policer_notify(devlink, policer_item,
9145 DEVLINK_CMD_TRAP_POLICER_DEL);
9147 list_for_each_entry_reverse(devlink_port, &devlink->port_list, list)
9148 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
9149 devlink_notify(devlink, DEVLINK_CMD_DEL);
9153 * devlink_register - Register devlink instance
9157 void devlink_register(struct devlink *devlink)
9159 ASSERT_DEVLINK_NOT_REGISTERED(devlink);
9160 /* Make sure that we are in .probe() routine */
9162 mutex_lock(&devlink_mutex);
9163 xa_set_mark(&devlinks, devlink->index, DEVLINK_REGISTERED);
9164 devlink_notify_register(devlink);
9165 mutex_unlock(&devlink_mutex);
9167 EXPORT_SYMBOL_GPL(devlink_register);
9170 * devlink_unregister - Unregister devlink instance
9174 void devlink_unregister(struct devlink *devlink)
9176 ASSERT_DEVLINK_REGISTERED(devlink);
9177 /* Make sure that we are in .remove() routine */
9179 devlink_put(devlink);
9180 wait_for_completion(&devlink->comp);
9182 mutex_lock(&devlink_mutex);
9183 devlink_notify_unregister(devlink);
9184 xa_clear_mark(&devlinks, devlink->index, DEVLINK_REGISTERED);
9185 mutex_unlock(&devlink_mutex);
9187 EXPORT_SYMBOL_GPL(devlink_unregister);
9190 * devlink_free - Free devlink instance resources
9194 void devlink_free(struct devlink *devlink)
9196 ASSERT_DEVLINK_NOT_REGISTERED(devlink);
9198 mutex_destroy(&devlink->reporters_lock);
9199 mutex_destroy(&devlink->lock);
9200 WARN_ON(!list_empty(&devlink->trap_policer_list));
9201 WARN_ON(!list_empty(&devlink->trap_group_list));
9202 WARN_ON(!list_empty(&devlink->trap_list));
9203 WARN_ON(!list_empty(&devlink->reporter_list));
9204 WARN_ON(!list_empty(&devlink->region_list));
9205 WARN_ON(!list_empty(&devlink->param_list));
9206 WARN_ON(!list_empty(&devlink->resource_list));
9207 WARN_ON(!list_empty(&devlink->dpipe_table_list));
9208 WARN_ON(!list_empty(&devlink->sb_list));
9209 WARN_ON(!list_empty(&devlink->rate_list));
9210 WARN_ON(!list_empty(&devlink->port_list));
9212 xa_destroy(&devlink->snapshot_ids);
9213 xa_erase(&devlinks, devlink->index);
9217 EXPORT_SYMBOL_GPL(devlink_free);
9219 static void devlink_port_type_warn(struct work_struct *work)
9221 WARN(true, "Type was not set for devlink port.");
9224 static bool devlink_port_type_should_warn(struct devlink_port *devlink_port)
9226 /* Ignore CPU and DSA flavours. */
9227 return devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_CPU &&
9228 devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_DSA &&
9229 devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_UNUSED;
9232 #define DEVLINK_PORT_TYPE_WARN_TIMEOUT (HZ * 3600)
9234 static void devlink_port_type_warn_schedule(struct devlink_port *devlink_port)
9236 if (!devlink_port_type_should_warn(devlink_port))
9238 /* Schedule a work to WARN in case driver does not set port
9239 * type within timeout.
9241 schedule_delayed_work(&devlink_port->type_warn_dw,
9242 DEVLINK_PORT_TYPE_WARN_TIMEOUT);
9245 static void devlink_port_type_warn_cancel(struct devlink_port *devlink_port)
9247 if (!devlink_port_type_should_warn(devlink_port))
9249 cancel_delayed_work_sync(&devlink_port->type_warn_dw);
9253 * devlink_port_register - Register devlink port
9256 * @devlink_port: devlink port
9257 * @port_index: driver-specific numerical identifier of the port
9259 * Register devlink port with provided port index. User can use
9260 * any indexing, even hw-related one. devlink_port structure
9261 * is convenient to be embedded inside user driver private structure.
9262 * Note that the caller should take care of zeroing the devlink_port
9265 int devlink_port_register(struct devlink *devlink,
9266 struct devlink_port *devlink_port,
9267 unsigned int port_index)
9269 mutex_lock(&devlink->lock);
9270 if (devlink_port_index_exists(devlink, port_index)) {
9271 mutex_unlock(&devlink->lock);
9275 WARN_ON(devlink_port->devlink);
9276 devlink_port->devlink = devlink;
9277 devlink_port->index = port_index;
9278 spin_lock_init(&devlink_port->type_lock);
9279 INIT_LIST_HEAD(&devlink_port->reporter_list);
9280 mutex_init(&devlink_port->reporters_lock);
9281 list_add_tail(&devlink_port->list, &devlink->port_list);
9282 INIT_LIST_HEAD(&devlink_port->param_list);
9283 INIT_LIST_HEAD(&devlink_port->region_list);
9284 mutex_unlock(&devlink->lock);
9285 INIT_DELAYED_WORK(&devlink_port->type_warn_dw, &devlink_port_type_warn);
9286 devlink_port_type_warn_schedule(devlink_port);
9287 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
9290 EXPORT_SYMBOL_GPL(devlink_port_register);
9293 * devlink_port_unregister - Unregister devlink port
9295 * @devlink_port: devlink port
9297 void devlink_port_unregister(struct devlink_port *devlink_port)
9299 struct devlink *devlink = devlink_port->devlink;
9301 devlink_port_type_warn_cancel(devlink_port);
9302 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
9303 mutex_lock(&devlink->lock);
9304 list_del(&devlink_port->list);
9305 mutex_unlock(&devlink->lock);
9306 WARN_ON(!list_empty(&devlink_port->reporter_list));
9307 WARN_ON(!list_empty(&devlink_port->region_list));
9308 mutex_destroy(&devlink_port->reporters_lock);
9310 EXPORT_SYMBOL_GPL(devlink_port_unregister);
9312 static void __devlink_port_type_set(struct devlink_port *devlink_port,
9313 enum devlink_port_type type,
9316 if (WARN_ON(!devlink_port->devlink))
9318 devlink_port_type_warn_cancel(devlink_port);
9319 spin_lock_bh(&devlink_port->type_lock);
9320 devlink_port->type = type;
9321 devlink_port->type_dev = type_dev;
9322 spin_unlock_bh(&devlink_port->type_lock);
9323 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
9326 static void devlink_port_type_netdev_checks(struct devlink_port *devlink_port,
9327 struct net_device *netdev)
9329 const struct net_device_ops *ops = netdev->netdev_ops;
9331 /* If driver registers devlink port, it should set devlink port
9332 * attributes accordingly so the compat functions are called
9333 * and the original ops are not used.
9335 if (ops->ndo_get_phys_port_name) {
9336 /* Some drivers use the same set of ndos for netdevs
9337 * that have devlink_port registered and also for
9338 * those who don't. Make sure that ndo_get_phys_port_name
9339 * returns -EOPNOTSUPP here in case it is defined.
9342 char name[IFNAMSIZ];
9345 err = ops->ndo_get_phys_port_name(netdev, name, sizeof(name));
9346 WARN_ON(err != -EOPNOTSUPP);
9348 if (ops->ndo_get_port_parent_id) {
9349 /* Some drivers use the same set of ndos for netdevs
9350 * that have devlink_port registered and also for
9351 * those who don't. Make sure that ndo_get_port_parent_id
9352 * returns -EOPNOTSUPP here in case it is defined.
9355 struct netdev_phys_item_id ppid;
9358 err = ops->ndo_get_port_parent_id(netdev, &ppid);
9359 WARN_ON(err != -EOPNOTSUPP);
9364 * devlink_port_type_eth_set - Set port type to Ethernet
9366 * @devlink_port: devlink port
9367 * @netdev: related netdevice
9369 void devlink_port_type_eth_set(struct devlink_port *devlink_port,
9370 struct net_device *netdev)
9373 devlink_port_type_netdev_checks(devlink_port, netdev);
9375 dev_warn(devlink_port->devlink->dev,
9376 "devlink port type for port %d set to Ethernet without a software interface reference, device type not supported by the kernel?\n",
9377 devlink_port->index);
9379 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH, netdev);
9381 EXPORT_SYMBOL_GPL(devlink_port_type_eth_set);
9384 * devlink_port_type_ib_set - Set port type to InfiniBand
9386 * @devlink_port: devlink port
9387 * @ibdev: related IB device
9389 void devlink_port_type_ib_set(struct devlink_port *devlink_port,
9390 struct ib_device *ibdev)
9392 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_IB, ibdev);
9394 EXPORT_SYMBOL_GPL(devlink_port_type_ib_set);
9397 * devlink_port_type_clear - Clear port type
9399 * @devlink_port: devlink port
9401 void devlink_port_type_clear(struct devlink_port *devlink_port)
9403 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET, NULL);
9404 devlink_port_type_warn_schedule(devlink_port);
9406 EXPORT_SYMBOL_GPL(devlink_port_type_clear);
9408 static int __devlink_port_attrs_set(struct devlink_port *devlink_port,
9409 enum devlink_port_flavour flavour)
9411 struct devlink_port_attrs *attrs = &devlink_port->attrs;
9413 devlink_port->attrs_set = true;
9414 attrs->flavour = flavour;
9415 if (attrs->switch_id.id_len) {
9416 devlink_port->switch_port = true;
9417 if (WARN_ON(attrs->switch_id.id_len > MAX_PHYS_ITEM_ID_LEN))
9418 attrs->switch_id.id_len = MAX_PHYS_ITEM_ID_LEN;
9420 devlink_port->switch_port = false;
9426 * devlink_port_attrs_set - Set port attributes
9428 * @devlink_port: devlink port
9429 * @attrs: devlink port attrs
9431 void devlink_port_attrs_set(struct devlink_port *devlink_port,
9432 struct devlink_port_attrs *attrs)
9436 if (WARN_ON(devlink_port->devlink))
9438 devlink_port->attrs = *attrs;
9439 ret = __devlink_port_attrs_set(devlink_port, attrs->flavour);
9442 WARN_ON(attrs->splittable && attrs->split);
9444 EXPORT_SYMBOL_GPL(devlink_port_attrs_set);
9447 * devlink_port_attrs_pci_pf_set - Set PCI PF port attributes
9449 * @devlink_port: devlink port
9450 * @controller: associated controller number for the devlink port instance
9451 * @pf: associated PF for the devlink port instance
9452 * @external: indicates if the port is for an external controller
9454 void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port, u32 controller,
9455 u16 pf, bool external)
9457 struct devlink_port_attrs *attrs = &devlink_port->attrs;
9460 if (WARN_ON(devlink_port->devlink))
9462 ret = __devlink_port_attrs_set(devlink_port,
9463 DEVLINK_PORT_FLAVOUR_PCI_PF);
9466 attrs->pci_pf.controller = controller;
9467 attrs->pci_pf.pf = pf;
9468 attrs->pci_pf.external = external;
9470 EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_pf_set);
9473 * devlink_port_attrs_pci_vf_set - Set PCI VF port attributes
9475 * @devlink_port: devlink port
9476 * @controller: associated controller number for the devlink port instance
9477 * @pf: associated PF for the devlink port instance
9478 * @vf: associated VF of a PF for the devlink port instance
9479 * @external: indicates if the port is for an external controller
9481 void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port, u32 controller,
9482 u16 pf, u16 vf, bool external)
9484 struct devlink_port_attrs *attrs = &devlink_port->attrs;
9487 if (WARN_ON(devlink_port->devlink))
9489 ret = __devlink_port_attrs_set(devlink_port,
9490 DEVLINK_PORT_FLAVOUR_PCI_VF);
9493 attrs->pci_vf.controller = controller;
9494 attrs->pci_vf.pf = pf;
9495 attrs->pci_vf.vf = vf;
9496 attrs->pci_vf.external = external;
9498 EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_vf_set);
9501 * devlink_port_attrs_pci_sf_set - Set PCI SF port attributes
9503 * @devlink_port: devlink port
9504 * @controller: associated controller number for the devlink port instance
9505 * @pf: associated PF for the devlink port instance
9506 * @sf: associated SF of a PF for the devlink port instance
9507 * @external: indicates if the port is for an external controller
9509 void devlink_port_attrs_pci_sf_set(struct devlink_port *devlink_port, u32 controller,
9510 u16 pf, u32 sf, bool external)
9512 struct devlink_port_attrs *attrs = &devlink_port->attrs;
9515 if (WARN_ON(devlink_port->devlink))
9517 ret = __devlink_port_attrs_set(devlink_port,
9518 DEVLINK_PORT_FLAVOUR_PCI_SF);
9521 attrs->pci_sf.controller = controller;
9522 attrs->pci_sf.pf = pf;
9523 attrs->pci_sf.sf = sf;
9524 attrs->pci_sf.external = external;
9526 EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_sf_set);
9529 * devlink_rate_leaf_create - create devlink rate leaf
9531 * @devlink_port: devlink port object to create rate object on
9532 * @priv: driver private data
9534 * Create devlink rate object of type leaf on provided @devlink_port.
9535 * Throws call trace if @devlink_port already has a devlink rate object.
9537 * Context: Takes and release devlink->lock <mutex>.
9539 * Return: -ENOMEM if failed to allocate rate object, 0 otherwise.
9542 devlink_rate_leaf_create(struct devlink_port *devlink_port, void *priv)
9544 struct devlink *devlink = devlink_port->devlink;
9545 struct devlink_rate *devlink_rate;
9547 devlink_rate = kzalloc(sizeof(*devlink_rate), GFP_KERNEL);
9551 mutex_lock(&devlink->lock);
9552 WARN_ON(devlink_port->devlink_rate);
9553 devlink_rate->type = DEVLINK_RATE_TYPE_LEAF;
9554 devlink_rate->devlink = devlink;
9555 devlink_rate->devlink_port = devlink_port;
9556 devlink_rate->priv = priv;
9557 list_add_tail(&devlink_rate->list, &devlink->rate_list);
9558 devlink_port->devlink_rate = devlink_rate;
9559 devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_NEW);
9560 mutex_unlock(&devlink->lock);
9564 EXPORT_SYMBOL_GPL(devlink_rate_leaf_create);
9567 * devlink_rate_leaf_destroy - destroy devlink rate leaf
9569 * @devlink_port: devlink port linked to the rate object
9571 * Context: Takes and release devlink->lock <mutex>.
9573 void devlink_rate_leaf_destroy(struct devlink_port *devlink_port)
9575 struct devlink_rate *devlink_rate = devlink_port->devlink_rate;
9576 struct devlink *devlink = devlink_port->devlink;
9581 mutex_lock(&devlink->lock);
9582 devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_DEL);
9583 if (devlink_rate->parent)
9584 refcount_dec(&devlink_rate->parent->refcnt);
9585 list_del(&devlink_rate->list);
9586 devlink_port->devlink_rate = NULL;
9587 mutex_unlock(&devlink->lock);
9588 kfree(devlink_rate);
9590 EXPORT_SYMBOL_GPL(devlink_rate_leaf_destroy);
9593 * devlink_rate_nodes_destroy - destroy all devlink rate nodes on device
9595 * @devlink: devlink instance
9597 * Unset parent for all rate objects and destroy all rate nodes
9598 * on specified device.
9600 * Context: Takes and release devlink->lock <mutex>.
9602 void devlink_rate_nodes_destroy(struct devlink *devlink)
9604 static struct devlink_rate *devlink_rate, *tmp;
9605 const struct devlink_ops *ops = devlink->ops;
9607 mutex_lock(&devlink->lock);
9608 list_for_each_entry(devlink_rate, &devlink->rate_list, list) {
9609 if (!devlink_rate->parent)
9612 refcount_dec(&devlink_rate->parent->refcnt);
9613 if (devlink_rate_is_leaf(devlink_rate))
9614 ops->rate_leaf_parent_set(devlink_rate, NULL, devlink_rate->priv,
9616 else if (devlink_rate_is_node(devlink_rate))
9617 ops->rate_node_parent_set(devlink_rate, NULL, devlink_rate->priv,
9620 list_for_each_entry_safe(devlink_rate, tmp, &devlink->rate_list, list) {
9621 if (devlink_rate_is_node(devlink_rate)) {
9622 ops->rate_node_del(devlink_rate, devlink_rate->priv, NULL);
9623 list_del(&devlink_rate->list);
9624 kfree(devlink_rate->name);
9625 kfree(devlink_rate);
9628 mutex_unlock(&devlink->lock);
9630 EXPORT_SYMBOL_GPL(devlink_rate_nodes_destroy);
9632 static int __devlink_port_phys_port_name_get(struct devlink_port *devlink_port,
9633 char *name, size_t len)
9635 struct devlink_port_attrs *attrs = &devlink_port->attrs;
9638 if (!devlink_port->attrs_set)
9641 switch (attrs->flavour) {
9642 case DEVLINK_PORT_FLAVOUR_PHYSICAL:
9643 n = snprintf(name, len, "p%u", attrs->phys.port_number);
9644 if (n < len && attrs->split)
9645 n += snprintf(name + n, len - n, "s%u",
9646 attrs->phys.split_subport_number);
9648 case DEVLINK_PORT_FLAVOUR_CPU:
9649 case DEVLINK_PORT_FLAVOUR_DSA:
9650 case DEVLINK_PORT_FLAVOUR_UNUSED:
9651 /* As CPU and DSA ports do not have a netdevice associated
9652 * case should not ever happen.
9656 case DEVLINK_PORT_FLAVOUR_PCI_PF:
9657 if (attrs->pci_pf.external) {
9658 n = snprintf(name, len, "c%u", attrs->pci_pf.controller);
9664 n = snprintf(name, len, "pf%u", attrs->pci_pf.pf);
9666 case DEVLINK_PORT_FLAVOUR_PCI_VF:
9667 if (attrs->pci_vf.external) {
9668 n = snprintf(name, len, "c%u", attrs->pci_vf.controller);
9674 n = snprintf(name, len, "pf%uvf%u",
9675 attrs->pci_vf.pf, attrs->pci_vf.vf);
9677 case DEVLINK_PORT_FLAVOUR_PCI_SF:
9678 if (attrs->pci_sf.external) {
9679 n = snprintf(name, len, "c%u", attrs->pci_sf.controller);
9685 n = snprintf(name, len, "pf%usf%u", attrs->pci_sf.pf,
9688 case DEVLINK_PORT_FLAVOUR_VIRTUAL:
9698 int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
9699 u32 size, u16 ingress_pools_count,
9700 u16 egress_pools_count, u16 ingress_tc_count,
9701 u16 egress_tc_count)
9703 struct devlink_sb *devlink_sb;
9706 mutex_lock(&devlink->lock);
9707 if (devlink_sb_index_exists(devlink, sb_index)) {
9712 devlink_sb = kzalloc(sizeof(*devlink_sb), GFP_KERNEL);
9717 devlink_sb->index = sb_index;
9718 devlink_sb->size = size;
9719 devlink_sb->ingress_pools_count = ingress_pools_count;
9720 devlink_sb->egress_pools_count = egress_pools_count;
9721 devlink_sb->ingress_tc_count = ingress_tc_count;
9722 devlink_sb->egress_tc_count = egress_tc_count;
9723 list_add_tail(&devlink_sb->list, &devlink->sb_list);
9725 mutex_unlock(&devlink->lock);
9728 EXPORT_SYMBOL_GPL(devlink_sb_register);
9730 void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index)
9732 struct devlink_sb *devlink_sb;
9734 mutex_lock(&devlink->lock);
9735 devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
9736 WARN_ON(!devlink_sb);
9737 list_del(&devlink_sb->list);
9738 mutex_unlock(&devlink->lock);
9741 EXPORT_SYMBOL_GPL(devlink_sb_unregister);
9744 * devlink_dpipe_headers_register - register dpipe headers
9747 * @dpipe_headers: dpipe header array
9749 * Register the headers supported by hardware.
9751 int devlink_dpipe_headers_register(struct devlink *devlink,
9752 struct devlink_dpipe_headers *dpipe_headers)
9754 mutex_lock(&devlink->lock);
9755 devlink->dpipe_headers = dpipe_headers;
9756 mutex_unlock(&devlink->lock);
9759 EXPORT_SYMBOL_GPL(devlink_dpipe_headers_register);
9762 * devlink_dpipe_headers_unregister - unregister dpipe headers
9766 * Unregister the headers supported by hardware.
9768 void devlink_dpipe_headers_unregister(struct devlink *devlink)
9770 mutex_lock(&devlink->lock);
9771 devlink->dpipe_headers = NULL;
9772 mutex_unlock(&devlink->lock);
9774 EXPORT_SYMBOL_GPL(devlink_dpipe_headers_unregister);
9777 * devlink_dpipe_table_counter_enabled - check if counter allocation
9780 * @table_name: tables name
9782 * Used by driver to check if counter allocation is required.
9783 * After counter allocation is turned on the table entries
9784 * are updated to include counter statistics.
9786 * After that point on the driver must respect the counter
9787 * state so that each entry added to the table is added
9790 bool devlink_dpipe_table_counter_enabled(struct devlink *devlink,
9791 const char *table_name)
9793 struct devlink_dpipe_table *table;
9797 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
9798 table_name, devlink);
9801 enabled = table->counters_enabled;
9805 EXPORT_SYMBOL_GPL(devlink_dpipe_table_counter_enabled);
9808 * devlink_dpipe_table_register - register dpipe table
9811 * @table_name: table name
9812 * @table_ops: table ops
9814 * @counter_control_extern: external control for counters
9816 int devlink_dpipe_table_register(struct devlink *devlink,
9817 const char *table_name,
9818 struct devlink_dpipe_table_ops *table_ops,
9819 void *priv, bool counter_control_extern)
9821 struct devlink_dpipe_table *table;
9824 if (WARN_ON(!table_ops->size_get))
9827 mutex_lock(&devlink->lock);
9829 if (devlink_dpipe_table_find(&devlink->dpipe_table_list, table_name,
9835 table = kzalloc(sizeof(*table), GFP_KERNEL);
9841 table->name = table_name;
9842 table->table_ops = table_ops;
9844 table->counter_control_extern = counter_control_extern;
9846 list_add_tail_rcu(&table->list, &devlink->dpipe_table_list);
9848 mutex_unlock(&devlink->lock);
9851 EXPORT_SYMBOL_GPL(devlink_dpipe_table_register);
9854 * devlink_dpipe_table_unregister - unregister dpipe table
9857 * @table_name: table name
9859 void devlink_dpipe_table_unregister(struct devlink *devlink,
9860 const char *table_name)
9862 struct devlink_dpipe_table *table;
9864 mutex_lock(&devlink->lock);
9865 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
9866 table_name, devlink);
9869 list_del_rcu(&table->list);
9870 mutex_unlock(&devlink->lock);
9871 kfree_rcu(table, rcu);
9874 mutex_unlock(&devlink->lock);
9876 EXPORT_SYMBOL_GPL(devlink_dpipe_table_unregister);
9879 * devlink_resource_register - devlink resource register
9882 * @resource_name: resource's name
9883 * @resource_size: resource's size
9884 * @resource_id: resource's id
9885 * @parent_resource_id: resource's parent id
9886 * @size_params: size parameters
9888 * Generic resources should reuse the same names across drivers.
9889 * Please see the generic resources list at:
9890 * Documentation/networking/devlink/devlink-resource.rst
9892 int devlink_resource_register(struct devlink *devlink,
9893 const char *resource_name,
9896 u64 parent_resource_id,
9897 const struct devlink_resource_size_params *size_params)
9899 struct devlink_resource *resource;
9900 struct list_head *resource_list;
9904 top_hierarchy = parent_resource_id == DEVLINK_RESOURCE_ID_PARENT_TOP;
9906 mutex_lock(&devlink->lock);
9907 resource = devlink_resource_find(devlink, NULL, resource_id);
9913 resource = kzalloc(sizeof(*resource), GFP_KERNEL);
9919 if (top_hierarchy) {
9920 resource_list = &devlink->resource_list;
9922 struct devlink_resource *parent_resource;
9924 parent_resource = devlink_resource_find(devlink, NULL,
9925 parent_resource_id);
9926 if (parent_resource) {
9927 resource_list = &parent_resource->resource_list;
9928 resource->parent = parent_resource;
9936 resource->name = resource_name;
9937 resource->size = resource_size;
9938 resource->size_new = resource_size;
9939 resource->id = resource_id;
9940 resource->size_valid = true;
9941 memcpy(&resource->size_params, size_params,
9942 sizeof(resource->size_params));
9943 INIT_LIST_HEAD(&resource->resource_list);
9944 list_add_tail(&resource->list, resource_list);
9946 mutex_unlock(&devlink->lock);
9949 EXPORT_SYMBOL_GPL(devlink_resource_register);
9951 static void devlink_resource_unregister(struct devlink *devlink,
9952 struct devlink_resource *resource)
9954 struct devlink_resource *tmp, *child_resource;
9956 list_for_each_entry_safe(child_resource, tmp, &resource->resource_list,
9958 devlink_resource_unregister(devlink, child_resource);
9959 list_del(&child_resource->list);
9960 kfree(child_resource);
9965 * devlink_resources_unregister - free all resources
9969 void devlink_resources_unregister(struct devlink *devlink)
9971 struct devlink_resource *tmp, *child_resource;
9973 mutex_lock(&devlink->lock);
9975 list_for_each_entry_safe(child_resource, tmp, &devlink->resource_list,
9977 devlink_resource_unregister(devlink, child_resource);
9978 list_del(&child_resource->list);
9979 kfree(child_resource);
9982 mutex_unlock(&devlink->lock);
9984 EXPORT_SYMBOL_GPL(devlink_resources_unregister);
9987 * devlink_resource_size_get - get and update size
9990 * @resource_id: the requested resource id
9991 * @p_resource_size: ptr to update
9993 int devlink_resource_size_get(struct devlink *devlink,
9995 u64 *p_resource_size)
9997 struct devlink_resource *resource;
10000 mutex_lock(&devlink->lock);
10001 resource = devlink_resource_find(devlink, NULL, resource_id);
10006 *p_resource_size = resource->size_new;
10007 resource->size = resource->size_new;
10009 mutex_unlock(&devlink->lock);
10012 EXPORT_SYMBOL_GPL(devlink_resource_size_get);
10015 * devlink_dpipe_table_resource_set - set the resource id
10017 * @devlink: devlink
10018 * @table_name: table name
10019 * @resource_id: resource id
10020 * @resource_units: number of resource's units consumed per table's entry
10022 int devlink_dpipe_table_resource_set(struct devlink *devlink,
10023 const char *table_name, u64 resource_id,
10024 u64 resource_units)
10026 struct devlink_dpipe_table *table;
10029 mutex_lock(&devlink->lock);
10030 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
10031 table_name, devlink);
10036 table->resource_id = resource_id;
10037 table->resource_units = resource_units;
10038 table->resource_valid = true;
10040 mutex_unlock(&devlink->lock);
10043 EXPORT_SYMBOL_GPL(devlink_dpipe_table_resource_set);
10046 * devlink_resource_occ_get_register - register occupancy getter
10048 * @devlink: devlink
10049 * @resource_id: resource id
10050 * @occ_get: occupancy getter callback
10051 * @occ_get_priv: occupancy getter callback priv
10053 void devlink_resource_occ_get_register(struct devlink *devlink,
10055 devlink_resource_occ_get_t *occ_get,
10056 void *occ_get_priv)
10058 struct devlink_resource *resource;
10060 mutex_lock(&devlink->lock);
10061 resource = devlink_resource_find(devlink, NULL, resource_id);
10062 if (WARN_ON(!resource))
10064 WARN_ON(resource->occ_get);
10066 resource->occ_get = occ_get;
10067 resource->occ_get_priv = occ_get_priv;
10069 mutex_unlock(&devlink->lock);
10071 EXPORT_SYMBOL_GPL(devlink_resource_occ_get_register);
10074 * devlink_resource_occ_get_unregister - unregister occupancy getter
10076 * @devlink: devlink
10077 * @resource_id: resource id
10079 void devlink_resource_occ_get_unregister(struct devlink *devlink,
10082 struct devlink_resource *resource;
10084 mutex_lock(&devlink->lock);
10085 resource = devlink_resource_find(devlink, NULL, resource_id);
10086 if (WARN_ON(!resource))
10088 WARN_ON(!resource->occ_get);
10090 resource->occ_get = NULL;
10091 resource->occ_get_priv = NULL;
10093 mutex_unlock(&devlink->lock);
10095 EXPORT_SYMBOL_GPL(devlink_resource_occ_get_unregister);
10097 static int devlink_param_verify(const struct devlink_param *param)
10099 if (!param || !param->name || !param->supported_cmodes)
10101 if (param->generic)
10102 return devlink_param_generic_verify(param);
10104 return devlink_param_driver_verify(param);
10108 * devlink_params_register - register configuration parameters
10110 * @devlink: devlink
10111 * @params: configuration parameters array
10112 * @params_count: number of parameters provided
10114 * Register the configuration parameters supported by the driver.
10116 int devlink_params_register(struct devlink *devlink,
10117 const struct devlink_param *params,
10118 size_t params_count)
10120 const struct devlink_param *param = params;
10123 ASSERT_DEVLINK_NOT_REGISTERED(devlink);
10125 for (i = 0; i < params_count; i++, param++) {
10126 err = devlink_param_register(devlink, param);
10136 for (param--; i > 0; i--, param--)
10137 devlink_param_unregister(devlink, param);
10140 EXPORT_SYMBOL_GPL(devlink_params_register);
10143 * devlink_params_unregister - unregister configuration parameters
10144 * @devlink: devlink
10145 * @params: configuration parameters to unregister
10146 * @params_count: number of parameters provided
10148 void devlink_params_unregister(struct devlink *devlink,
10149 const struct devlink_param *params,
10150 size_t params_count)
10152 const struct devlink_param *param = params;
10155 ASSERT_DEVLINK_NOT_REGISTERED(devlink);
10157 for (i = 0; i < params_count; i++, param++)
10158 devlink_param_unregister(devlink, param);
10160 EXPORT_SYMBOL_GPL(devlink_params_unregister);
10163 * devlink_param_register - register one configuration parameter
10165 * @devlink: devlink
10166 * @param: one configuration parameter
10168 * Register the configuration parameter supported by the driver.
10169 * Return: returns 0 on successful registration or error code otherwise.
10171 int devlink_param_register(struct devlink *devlink,
10172 const struct devlink_param *param)
10174 struct devlink_param_item *param_item;
10176 ASSERT_DEVLINK_NOT_REGISTERED(devlink);
10178 WARN_ON(devlink_param_verify(param));
10179 WARN_ON(devlink_param_find_by_name(&devlink->param_list, param->name));
10181 if (param->supported_cmodes == BIT(DEVLINK_PARAM_CMODE_DRIVERINIT))
10182 WARN_ON(param->get || param->set);
10184 WARN_ON(!param->get || !param->set);
10186 param_item = kzalloc(sizeof(*param_item), GFP_KERNEL);
10190 param_item->param = param;
10192 list_add_tail(¶m_item->list, &devlink->param_list);
10195 EXPORT_SYMBOL_GPL(devlink_param_register);
10198 * devlink_param_unregister - unregister one configuration parameter
10199 * @devlink: devlink
10200 * @param: configuration parameter to unregister
10202 void devlink_param_unregister(struct devlink *devlink,
10203 const struct devlink_param *param)
10205 struct devlink_param_item *param_item;
10207 ASSERT_DEVLINK_NOT_REGISTERED(devlink);
10210 devlink_param_find_by_name(&devlink->param_list, param->name);
10211 WARN_ON(!param_item);
10212 list_del(¶m_item->list);
10215 EXPORT_SYMBOL_GPL(devlink_param_unregister);
10218 * devlink_param_driverinit_value_get - get configuration parameter
10219 * value for driver initializing
10221 * @devlink: devlink
10222 * @param_id: parameter ID
10223 * @init_val: value of parameter in driverinit configuration mode
10225 * This function should be used by the driver to get driverinit
10226 * configuration for initialization after reload command.
10228 int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
10229 union devlink_param_value *init_val)
10231 struct devlink_param_item *param_item;
10233 if (!devlink_reload_supported(devlink->ops))
10234 return -EOPNOTSUPP;
10236 param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
10240 if (!param_item->driverinit_value_valid ||
10241 !devlink_param_cmode_is_supported(param_item->param,
10242 DEVLINK_PARAM_CMODE_DRIVERINIT))
10243 return -EOPNOTSUPP;
10245 if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
10246 strcpy(init_val->vstr, param_item->driverinit_value.vstr);
10248 *init_val = param_item->driverinit_value;
10252 EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_get);
10255 * devlink_param_driverinit_value_set - set value of configuration
10256 * parameter for driverinit
10257 * configuration mode
10259 * @devlink: devlink
10260 * @param_id: parameter ID
10261 * @init_val: value of parameter to set for driverinit configuration mode
10263 * This function should be used by the driver to set driverinit
10264 * configuration mode default value.
10266 int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
10267 union devlink_param_value init_val)
10269 struct devlink_param_item *param_item;
10271 ASSERT_DEVLINK_NOT_REGISTERED(devlink);
10273 param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
10277 if (!devlink_param_cmode_is_supported(param_item->param,
10278 DEVLINK_PARAM_CMODE_DRIVERINIT))
10279 return -EOPNOTSUPP;
10281 if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
10282 strcpy(param_item->driverinit_value.vstr, init_val.vstr);
10284 param_item->driverinit_value = init_val;
10285 param_item->driverinit_value_valid = true;
10288 EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_set);
10291 * devlink_param_value_changed - notify devlink on a parameter's value
10292 * change. Should be called by the driver
10293 * right after the change.
10295 * @devlink: devlink
10296 * @param_id: parameter ID
10298 * This function should be used by the driver to notify devlink on value
10299 * change, excluding driverinit configuration mode.
10300 * For driverinit configuration mode driver should use the function
10302 void devlink_param_value_changed(struct devlink *devlink, u32 param_id)
10304 struct devlink_param_item *param_item;
10306 param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
10307 WARN_ON(!param_item);
10309 devlink_param_notify(devlink, 0, param_item, DEVLINK_CMD_PARAM_NEW);
10311 EXPORT_SYMBOL_GPL(devlink_param_value_changed);
10314 * devlink_region_create - create a new address region
10316 * @devlink: devlink
10317 * @ops: region operations and name
10318 * @region_max_snapshots: Maximum supported number of snapshots for region
10319 * @region_size: size of region
10321 struct devlink_region *
10322 devlink_region_create(struct devlink *devlink,
10323 const struct devlink_region_ops *ops,
10324 u32 region_max_snapshots, u64 region_size)
10326 struct devlink_region *region;
10329 if (WARN_ON(!ops) || WARN_ON(!ops->destructor))
10330 return ERR_PTR(-EINVAL);
10332 mutex_lock(&devlink->lock);
10334 if (devlink_region_get_by_name(devlink, ops->name)) {
10339 region = kzalloc(sizeof(*region), GFP_KERNEL);
10345 region->devlink = devlink;
10346 region->max_snapshots = region_max_snapshots;
10348 region->size = region_size;
10349 INIT_LIST_HEAD(®ion->snapshot_list);
10350 list_add_tail(®ion->list, &devlink->region_list);
10351 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
10353 mutex_unlock(&devlink->lock);
10357 mutex_unlock(&devlink->lock);
10358 return ERR_PTR(err);
10360 EXPORT_SYMBOL_GPL(devlink_region_create);
10363 * devlink_port_region_create - create a new address region for a port
10365 * @port: devlink port
10366 * @ops: region operations and name
10367 * @region_max_snapshots: Maximum supported number of snapshots for region
10368 * @region_size: size of region
10370 struct devlink_region *
10371 devlink_port_region_create(struct devlink_port *port,
10372 const struct devlink_port_region_ops *ops,
10373 u32 region_max_snapshots, u64 region_size)
10375 struct devlink *devlink = port->devlink;
10376 struct devlink_region *region;
10379 if (WARN_ON(!ops) || WARN_ON(!ops->destructor))
10380 return ERR_PTR(-EINVAL);
10382 mutex_lock(&devlink->lock);
10384 if (devlink_port_region_get_by_name(port, ops->name)) {
10389 region = kzalloc(sizeof(*region), GFP_KERNEL);
10395 region->devlink = devlink;
10396 region->port = port;
10397 region->max_snapshots = region_max_snapshots;
10398 region->port_ops = ops;
10399 region->size = region_size;
10400 INIT_LIST_HEAD(®ion->snapshot_list);
10401 list_add_tail(®ion->list, &port->region_list);
10402 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
10404 mutex_unlock(&devlink->lock);
10408 mutex_unlock(&devlink->lock);
10409 return ERR_PTR(err);
10411 EXPORT_SYMBOL_GPL(devlink_port_region_create);
10414 * devlink_region_destroy - destroy address region
10416 * @region: devlink region to destroy
10418 void devlink_region_destroy(struct devlink_region *region)
10420 struct devlink *devlink = region->devlink;
10421 struct devlink_snapshot *snapshot, *ts;
10423 mutex_lock(&devlink->lock);
10425 /* Free all snapshots of region */
10426 list_for_each_entry_safe(snapshot, ts, ®ion->snapshot_list, list)
10427 devlink_region_snapshot_del(region, snapshot);
10429 list_del(®ion->list);
10431 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL);
10432 mutex_unlock(&devlink->lock);
10435 EXPORT_SYMBOL_GPL(devlink_region_destroy);
10438 * devlink_region_snapshot_id_get - get snapshot ID
10440 * This callback should be called when adding a new snapshot,
10441 * Driver should use the same id for multiple snapshots taken
10442 * on multiple regions at the same time/by the same trigger.
10444 * The caller of this function must use devlink_region_snapshot_id_put
10445 * when finished creating regions using this id.
10447 * Returns zero on success, or a negative error code on failure.
10449 * @devlink: devlink
10450 * @id: storage to return id
10452 int devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id)
10456 mutex_lock(&devlink->lock);
10457 err = __devlink_region_snapshot_id_get(devlink, id);
10458 mutex_unlock(&devlink->lock);
10462 EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_get);
10465 * devlink_region_snapshot_id_put - put snapshot ID reference
10467 * This should be called by a driver after finishing creating snapshots
10468 * with an id. Doing so ensures that the ID can later be released in the
10469 * event that all snapshots using it have been destroyed.
10471 * @devlink: devlink
10472 * @id: id to release reference on
10474 void devlink_region_snapshot_id_put(struct devlink *devlink, u32 id)
10476 mutex_lock(&devlink->lock);
10477 __devlink_snapshot_id_decrement(devlink, id);
10478 mutex_unlock(&devlink->lock);
10480 EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_put);
10483 * devlink_region_snapshot_create - create a new snapshot
10484 * This will add a new snapshot of a region. The snapshot
10485 * will be stored on the region struct and can be accessed
10486 * from devlink. This is useful for future analyses of snapshots.
10487 * Multiple snapshots can be created on a region.
10488 * The @snapshot_id should be obtained using the getter function.
10490 * @region: devlink region of the snapshot
10491 * @data: snapshot data
10492 * @snapshot_id: snapshot id to be created
10494 int devlink_region_snapshot_create(struct devlink_region *region,
10495 u8 *data, u32 snapshot_id)
10497 struct devlink *devlink = region->devlink;
10500 mutex_lock(&devlink->lock);
10501 err = __devlink_region_snapshot_create(region, data, snapshot_id);
10502 mutex_unlock(&devlink->lock);
10506 EXPORT_SYMBOL_GPL(devlink_region_snapshot_create);
10508 #define DEVLINK_TRAP(_id, _type) \
10510 .type = DEVLINK_TRAP_TYPE_##_type, \
10511 .id = DEVLINK_TRAP_GENERIC_ID_##_id, \
10512 .name = DEVLINK_TRAP_GENERIC_NAME_##_id, \
10515 static const struct devlink_trap devlink_trap_generic[] = {
10516 DEVLINK_TRAP(SMAC_MC, DROP),
10517 DEVLINK_TRAP(VLAN_TAG_MISMATCH, DROP),
10518 DEVLINK_TRAP(INGRESS_VLAN_FILTER, DROP),
10519 DEVLINK_TRAP(INGRESS_STP_FILTER, DROP),
10520 DEVLINK_TRAP(EMPTY_TX_LIST, DROP),
10521 DEVLINK_TRAP(PORT_LOOPBACK_FILTER, DROP),
10522 DEVLINK_TRAP(BLACKHOLE_ROUTE, DROP),
10523 DEVLINK_TRAP(TTL_ERROR, EXCEPTION),
10524 DEVLINK_TRAP(TAIL_DROP, DROP),
10525 DEVLINK_TRAP(NON_IP_PACKET, DROP),
10526 DEVLINK_TRAP(UC_DIP_MC_DMAC, DROP),
10527 DEVLINK_TRAP(DIP_LB, DROP),
10528 DEVLINK_TRAP(SIP_MC, DROP),
10529 DEVLINK_TRAP(SIP_LB, DROP),
10530 DEVLINK_TRAP(CORRUPTED_IP_HDR, DROP),
10531 DEVLINK_TRAP(IPV4_SIP_BC, DROP),
10532 DEVLINK_TRAP(IPV6_MC_DIP_RESERVED_SCOPE, DROP),
10533 DEVLINK_TRAP(IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE, DROP),
10534 DEVLINK_TRAP(MTU_ERROR, EXCEPTION),
10535 DEVLINK_TRAP(UNRESOLVED_NEIGH, EXCEPTION),
10536 DEVLINK_TRAP(RPF, EXCEPTION),
10537 DEVLINK_TRAP(REJECT_ROUTE, EXCEPTION),
10538 DEVLINK_TRAP(IPV4_LPM_UNICAST_MISS, EXCEPTION),
10539 DEVLINK_TRAP(IPV6_LPM_UNICAST_MISS, EXCEPTION),
10540 DEVLINK_TRAP(NON_ROUTABLE, DROP),
10541 DEVLINK_TRAP(DECAP_ERROR, EXCEPTION),
10542 DEVLINK_TRAP(OVERLAY_SMAC_MC, DROP),
10543 DEVLINK_TRAP(INGRESS_FLOW_ACTION_DROP, DROP),
10544 DEVLINK_TRAP(EGRESS_FLOW_ACTION_DROP, DROP),
10545 DEVLINK_TRAP(STP, CONTROL),
10546 DEVLINK_TRAP(LACP, CONTROL),
10547 DEVLINK_TRAP(LLDP, CONTROL),
10548 DEVLINK_TRAP(IGMP_QUERY, CONTROL),
10549 DEVLINK_TRAP(IGMP_V1_REPORT, CONTROL),
10550 DEVLINK_TRAP(IGMP_V2_REPORT, CONTROL),
10551 DEVLINK_TRAP(IGMP_V3_REPORT, CONTROL),
10552 DEVLINK_TRAP(IGMP_V2_LEAVE, CONTROL),
10553 DEVLINK_TRAP(MLD_QUERY, CONTROL),
10554 DEVLINK_TRAP(MLD_V1_REPORT, CONTROL),
10555 DEVLINK_TRAP(MLD_V2_REPORT, CONTROL),
10556 DEVLINK_TRAP(MLD_V1_DONE, CONTROL),
10557 DEVLINK_TRAP(IPV4_DHCP, CONTROL),
10558 DEVLINK_TRAP(IPV6_DHCP, CONTROL),
10559 DEVLINK_TRAP(ARP_REQUEST, CONTROL),
10560 DEVLINK_TRAP(ARP_RESPONSE, CONTROL),
10561 DEVLINK_TRAP(ARP_OVERLAY, CONTROL),
10562 DEVLINK_TRAP(IPV6_NEIGH_SOLICIT, CONTROL),
10563 DEVLINK_TRAP(IPV6_NEIGH_ADVERT, CONTROL),
10564 DEVLINK_TRAP(IPV4_BFD, CONTROL),
10565 DEVLINK_TRAP(IPV6_BFD, CONTROL),
10566 DEVLINK_TRAP(IPV4_OSPF, CONTROL),
10567 DEVLINK_TRAP(IPV6_OSPF, CONTROL),
10568 DEVLINK_TRAP(IPV4_BGP, CONTROL),
10569 DEVLINK_TRAP(IPV6_BGP, CONTROL),
10570 DEVLINK_TRAP(IPV4_VRRP, CONTROL),
10571 DEVLINK_TRAP(IPV6_VRRP, CONTROL),
10572 DEVLINK_TRAP(IPV4_PIM, CONTROL),
10573 DEVLINK_TRAP(IPV6_PIM, CONTROL),
10574 DEVLINK_TRAP(UC_LB, CONTROL),
10575 DEVLINK_TRAP(LOCAL_ROUTE, CONTROL),
10576 DEVLINK_TRAP(EXTERNAL_ROUTE, CONTROL),
10577 DEVLINK_TRAP(IPV6_UC_DIP_LINK_LOCAL_SCOPE, CONTROL),
10578 DEVLINK_TRAP(IPV6_DIP_ALL_NODES, CONTROL),
10579 DEVLINK_TRAP(IPV6_DIP_ALL_ROUTERS, CONTROL),
10580 DEVLINK_TRAP(IPV6_ROUTER_SOLICIT, CONTROL),
10581 DEVLINK_TRAP(IPV6_ROUTER_ADVERT, CONTROL),
10582 DEVLINK_TRAP(IPV6_REDIRECT, CONTROL),
10583 DEVLINK_TRAP(IPV4_ROUTER_ALERT, CONTROL),
10584 DEVLINK_TRAP(IPV6_ROUTER_ALERT, CONTROL),
10585 DEVLINK_TRAP(PTP_EVENT, CONTROL),
10586 DEVLINK_TRAP(PTP_GENERAL, CONTROL),
10587 DEVLINK_TRAP(FLOW_ACTION_SAMPLE, CONTROL),
10588 DEVLINK_TRAP(FLOW_ACTION_TRAP, CONTROL),
10589 DEVLINK_TRAP(EARLY_DROP, DROP),
10590 DEVLINK_TRAP(VXLAN_PARSING, DROP),
10591 DEVLINK_TRAP(LLC_SNAP_PARSING, DROP),
10592 DEVLINK_TRAP(VLAN_PARSING, DROP),
10593 DEVLINK_TRAP(PPPOE_PPP_PARSING, DROP),
10594 DEVLINK_TRAP(MPLS_PARSING, DROP),
10595 DEVLINK_TRAP(ARP_PARSING, DROP),
10596 DEVLINK_TRAP(IP_1_PARSING, DROP),
10597 DEVLINK_TRAP(IP_N_PARSING, DROP),
10598 DEVLINK_TRAP(GRE_PARSING, DROP),
10599 DEVLINK_TRAP(UDP_PARSING, DROP),
10600 DEVLINK_TRAP(TCP_PARSING, DROP),
10601 DEVLINK_TRAP(IPSEC_PARSING, DROP),
10602 DEVLINK_TRAP(SCTP_PARSING, DROP),
10603 DEVLINK_TRAP(DCCP_PARSING, DROP),
10604 DEVLINK_TRAP(GTP_PARSING, DROP),
10605 DEVLINK_TRAP(ESP_PARSING, DROP),
10606 DEVLINK_TRAP(BLACKHOLE_NEXTHOP, DROP),
10607 DEVLINK_TRAP(DMAC_FILTER, DROP),
10610 #define DEVLINK_TRAP_GROUP(_id) \
10612 .id = DEVLINK_TRAP_GROUP_GENERIC_ID_##_id, \
10613 .name = DEVLINK_TRAP_GROUP_GENERIC_NAME_##_id, \
10616 static const struct devlink_trap_group devlink_trap_group_generic[] = {
10617 DEVLINK_TRAP_GROUP(L2_DROPS),
10618 DEVLINK_TRAP_GROUP(L3_DROPS),
10619 DEVLINK_TRAP_GROUP(L3_EXCEPTIONS),
10620 DEVLINK_TRAP_GROUP(BUFFER_DROPS),
10621 DEVLINK_TRAP_GROUP(TUNNEL_DROPS),
10622 DEVLINK_TRAP_GROUP(ACL_DROPS),
10623 DEVLINK_TRAP_GROUP(STP),
10624 DEVLINK_TRAP_GROUP(LACP),
10625 DEVLINK_TRAP_GROUP(LLDP),
10626 DEVLINK_TRAP_GROUP(MC_SNOOPING),
10627 DEVLINK_TRAP_GROUP(DHCP),
10628 DEVLINK_TRAP_GROUP(NEIGH_DISCOVERY),
10629 DEVLINK_TRAP_GROUP(BFD),
10630 DEVLINK_TRAP_GROUP(OSPF),
10631 DEVLINK_TRAP_GROUP(BGP),
10632 DEVLINK_TRAP_GROUP(VRRP),
10633 DEVLINK_TRAP_GROUP(PIM),
10634 DEVLINK_TRAP_GROUP(UC_LB),
10635 DEVLINK_TRAP_GROUP(LOCAL_DELIVERY),
10636 DEVLINK_TRAP_GROUP(EXTERNAL_DELIVERY),
10637 DEVLINK_TRAP_GROUP(IPV6),
10638 DEVLINK_TRAP_GROUP(PTP_EVENT),
10639 DEVLINK_TRAP_GROUP(PTP_GENERAL),
10640 DEVLINK_TRAP_GROUP(ACL_SAMPLE),
10641 DEVLINK_TRAP_GROUP(ACL_TRAP),
10642 DEVLINK_TRAP_GROUP(PARSER_ERROR_DROPS),
10645 static int devlink_trap_generic_verify(const struct devlink_trap *trap)
10647 if (trap->id > DEVLINK_TRAP_GENERIC_ID_MAX)
10650 if (strcmp(trap->name, devlink_trap_generic[trap->id].name))
10653 if (trap->type != devlink_trap_generic[trap->id].type)
10659 static int devlink_trap_driver_verify(const struct devlink_trap *trap)
10663 if (trap->id <= DEVLINK_TRAP_GENERIC_ID_MAX)
10666 for (i = 0; i < ARRAY_SIZE(devlink_trap_generic); i++) {
10667 if (!strcmp(trap->name, devlink_trap_generic[i].name))
10674 static int devlink_trap_verify(const struct devlink_trap *trap)
10676 if (!trap || !trap->name)
10680 return devlink_trap_generic_verify(trap);
10682 return devlink_trap_driver_verify(trap);
10686 devlink_trap_group_generic_verify(const struct devlink_trap_group *group)
10688 if (group->id > DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
10691 if (strcmp(group->name, devlink_trap_group_generic[group->id].name))
10698 devlink_trap_group_driver_verify(const struct devlink_trap_group *group)
10702 if (group->id <= DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
10705 for (i = 0; i < ARRAY_SIZE(devlink_trap_group_generic); i++) {
10706 if (!strcmp(group->name, devlink_trap_group_generic[i].name))
10713 static int devlink_trap_group_verify(const struct devlink_trap_group *group)
10715 if (group->generic)
10716 return devlink_trap_group_generic_verify(group);
10718 return devlink_trap_group_driver_verify(group);
10722 devlink_trap_group_notify(struct devlink *devlink,
10723 const struct devlink_trap_group_item *group_item,
10724 enum devlink_command cmd)
10726 struct sk_buff *msg;
10729 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_GROUP_NEW &&
10730 cmd != DEVLINK_CMD_TRAP_GROUP_DEL);
10731 if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
10734 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10738 err = devlink_nl_trap_group_fill(msg, devlink, group_item, cmd, 0, 0,
10745 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
10746 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
10750 devlink_trap_item_group_link(struct devlink *devlink,
10751 struct devlink_trap_item *trap_item)
10753 u16 group_id = trap_item->trap->init_group_id;
10754 struct devlink_trap_group_item *group_item;
10756 group_item = devlink_trap_group_item_lookup_by_id(devlink, group_id);
10757 if (WARN_ON_ONCE(!group_item))
10760 trap_item->group_item = group_item;
10765 static void devlink_trap_notify(struct devlink *devlink,
10766 const struct devlink_trap_item *trap_item,
10767 enum devlink_command cmd)
10769 struct sk_buff *msg;
10772 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_NEW &&
10773 cmd != DEVLINK_CMD_TRAP_DEL);
10774 if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
10777 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10781 err = devlink_nl_trap_fill(msg, devlink, trap_item, cmd, 0, 0, 0);
10787 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
10788 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
10792 devlink_trap_register(struct devlink *devlink,
10793 const struct devlink_trap *trap, void *priv)
10795 struct devlink_trap_item *trap_item;
10798 if (devlink_trap_item_lookup(devlink, trap->name))
10801 trap_item = kzalloc(sizeof(*trap_item), GFP_KERNEL);
10805 trap_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
10806 if (!trap_item->stats) {
10808 goto err_stats_alloc;
10811 trap_item->trap = trap;
10812 trap_item->action = trap->init_action;
10813 trap_item->priv = priv;
10815 err = devlink_trap_item_group_link(devlink, trap_item);
10817 goto err_group_link;
10819 err = devlink->ops->trap_init(devlink, trap, trap_item);
10821 goto err_trap_init;
10823 list_add_tail(&trap_item->list, &devlink->trap_list);
10824 devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_NEW);
10830 free_percpu(trap_item->stats);
10836 static void devlink_trap_unregister(struct devlink *devlink,
10837 const struct devlink_trap *trap)
10839 struct devlink_trap_item *trap_item;
10841 trap_item = devlink_trap_item_lookup(devlink, trap->name);
10842 if (WARN_ON_ONCE(!trap_item))
10845 devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_DEL);
10846 list_del(&trap_item->list);
10847 if (devlink->ops->trap_fini)
10848 devlink->ops->trap_fini(devlink, trap, trap_item);
10849 free_percpu(trap_item->stats);
10853 static void devlink_trap_disable(struct devlink *devlink,
10854 const struct devlink_trap *trap)
10856 struct devlink_trap_item *trap_item;
10858 trap_item = devlink_trap_item_lookup(devlink, trap->name);
10859 if (WARN_ON_ONCE(!trap_item))
10862 devlink->ops->trap_action_set(devlink, trap, DEVLINK_TRAP_ACTION_DROP,
10864 trap_item->action = DEVLINK_TRAP_ACTION_DROP;
10868 * devlink_traps_register - Register packet traps with devlink.
10869 * @devlink: devlink.
10870 * @traps: Packet traps.
10871 * @traps_count: Count of provided packet traps.
10872 * @priv: Driver private information.
10874 * Return: Non-zero value on failure.
10876 int devlink_traps_register(struct devlink *devlink,
10877 const struct devlink_trap *traps,
10878 size_t traps_count, void *priv)
10882 if (!devlink->ops->trap_init || !devlink->ops->trap_action_set)
10885 mutex_lock(&devlink->lock);
10886 for (i = 0; i < traps_count; i++) {
10887 const struct devlink_trap *trap = &traps[i];
10889 err = devlink_trap_verify(trap);
10891 goto err_trap_verify;
10893 err = devlink_trap_register(devlink, trap, priv);
10895 goto err_trap_register;
10897 mutex_unlock(&devlink->lock);
10903 for (i--; i >= 0; i--)
10904 devlink_trap_unregister(devlink, &traps[i]);
10905 mutex_unlock(&devlink->lock);
10908 EXPORT_SYMBOL_GPL(devlink_traps_register);
10911 * devlink_traps_unregister - Unregister packet traps from devlink.
10912 * @devlink: devlink.
10913 * @traps: Packet traps.
10914 * @traps_count: Count of provided packet traps.
10916 void devlink_traps_unregister(struct devlink *devlink,
10917 const struct devlink_trap *traps,
10918 size_t traps_count)
10922 mutex_lock(&devlink->lock);
10923 /* Make sure we do not have any packets in-flight while unregistering
10924 * traps by disabling all of them and waiting for a grace period.
10926 for (i = traps_count - 1; i >= 0; i--)
10927 devlink_trap_disable(devlink, &traps[i]);
10929 for (i = traps_count - 1; i >= 0; i--)
10930 devlink_trap_unregister(devlink, &traps[i]);
10931 mutex_unlock(&devlink->lock);
10933 EXPORT_SYMBOL_GPL(devlink_traps_unregister);
10936 devlink_trap_stats_update(struct devlink_stats __percpu *trap_stats,
10939 struct devlink_stats *stats;
10941 stats = this_cpu_ptr(trap_stats);
10942 u64_stats_update_begin(&stats->syncp);
10943 stats->rx_bytes += skb_len;
10944 stats->rx_packets++;
10945 u64_stats_update_end(&stats->syncp);
10949 devlink_trap_report_metadata_set(struct devlink_trap_metadata *metadata,
10950 const struct devlink_trap_item *trap_item,
10951 struct devlink_port *in_devlink_port,
10952 const struct flow_action_cookie *fa_cookie)
10954 metadata->trap_name = trap_item->trap->name;
10955 metadata->trap_group_name = trap_item->group_item->group->name;
10956 metadata->fa_cookie = fa_cookie;
10957 metadata->trap_type = trap_item->trap->type;
10959 spin_lock(&in_devlink_port->type_lock);
10960 if (in_devlink_port->type == DEVLINK_PORT_TYPE_ETH)
10961 metadata->input_dev = in_devlink_port->type_dev;
10962 spin_unlock(&in_devlink_port->type_lock);
10966 * devlink_trap_report - Report trapped packet to drop monitor.
10967 * @devlink: devlink.
10968 * @skb: Trapped packet.
10969 * @trap_ctx: Trap context.
10970 * @in_devlink_port: Input devlink port.
10971 * @fa_cookie: Flow action cookie. Could be NULL.
10973 void devlink_trap_report(struct devlink *devlink, struct sk_buff *skb,
10974 void *trap_ctx, struct devlink_port *in_devlink_port,
10975 const struct flow_action_cookie *fa_cookie)
10978 struct devlink_trap_item *trap_item = trap_ctx;
10980 devlink_trap_stats_update(trap_item->stats, skb->len);
10981 devlink_trap_stats_update(trap_item->group_item->stats, skb->len);
10983 if (trace_devlink_trap_report_enabled()) {
10984 struct devlink_trap_metadata metadata = {};
10986 devlink_trap_report_metadata_set(&metadata, trap_item,
10987 in_devlink_port, fa_cookie);
10988 trace_devlink_trap_report(devlink, skb, &metadata);
10991 EXPORT_SYMBOL_GPL(devlink_trap_report);
10994 * devlink_trap_ctx_priv - Trap context to driver private information.
10995 * @trap_ctx: Trap context.
10997 * Return: Driver private information passed during registration.
10999 void *devlink_trap_ctx_priv(void *trap_ctx)
11001 struct devlink_trap_item *trap_item = trap_ctx;
11003 return trap_item->priv;
11005 EXPORT_SYMBOL_GPL(devlink_trap_ctx_priv);
11008 devlink_trap_group_item_policer_link(struct devlink *devlink,
11009 struct devlink_trap_group_item *group_item)
11011 u32 policer_id = group_item->group->init_policer_id;
11012 struct devlink_trap_policer_item *policer_item;
11014 if (policer_id == 0)
11017 policer_item = devlink_trap_policer_item_lookup(devlink, policer_id);
11018 if (WARN_ON_ONCE(!policer_item))
11021 group_item->policer_item = policer_item;
11027 devlink_trap_group_register(struct devlink *devlink,
11028 const struct devlink_trap_group *group)
11030 struct devlink_trap_group_item *group_item;
11033 if (devlink_trap_group_item_lookup(devlink, group->name))
11036 group_item = kzalloc(sizeof(*group_item), GFP_KERNEL);
11040 group_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
11041 if (!group_item->stats) {
11043 goto err_stats_alloc;
11046 group_item->group = group;
11048 err = devlink_trap_group_item_policer_link(devlink, group_item);
11050 goto err_policer_link;
11052 if (devlink->ops->trap_group_init) {
11053 err = devlink->ops->trap_group_init(devlink, group);
11055 goto err_group_init;
11058 list_add_tail(&group_item->list, &devlink->trap_group_list);
11059 devlink_trap_group_notify(devlink, group_item,
11060 DEVLINK_CMD_TRAP_GROUP_NEW);
11066 free_percpu(group_item->stats);
11073 devlink_trap_group_unregister(struct devlink *devlink,
11074 const struct devlink_trap_group *group)
11076 struct devlink_trap_group_item *group_item;
11078 group_item = devlink_trap_group_item_lookup(devlink, group->name);
11079 if (WARN_ON_ONCE(!group_item))
11082 devlink_trap_group_notify(devlink, group_item,
11083 DEVLINK_CMD_TRAP_GROUP_DEL);
11084 list_del(&group_item->list);
11085 free_percpu(group_item->stats);
11090 * devlink_trap_groups_register - Register packet trap groups with devlink.
11091 * @devlink: devlink.
11092 * @groups: Packet trap groups.
11093 * @groups_count: Count of provided packet trap groups.
11095 * Return: Non-zero value on failure.
11097 int devlink_trap_groups_register(struct devlink *devlink,
11098 const struct devlink_trap_group *groups,
11099 size_t groups_count)
11103 mutex_lock(&devlink->lock);
11104 for (i = 0; i < groups_count; i++) {
11105 const struct devlink_trap_group *group = &groups[i];
11107 err = devlink_trap_group_verify(group);
11109 goto err_trap_group_verify;
11111 err = devlink_trap_group_register(devlink, group);
11113 goto err_trap_group_register;
11115 mutex_unlock(&devlink->lock);
11119 err_trap_group_register:
11120 err_trap_group_verify:
11121 for (i--; i >= 0; i--)
11122 devlink_trap_group_unregister(devlink, &groups[i]);
11123 mutex_unlock(&devlink->lock);
11126 EXPORT_SYMBOL_GPL(devlink_trap_groups_register);
11129 * devlink_trap_groups_unregister - Unregister packet trap groups from devlink.
11130 * @devlink: devlink.
11131 * @groups: Packet trap groups.
11132 * @groups_count: Count of provided packet trap groups.
11134 void devlink_trap_groups_unregister(struct devlink *devlink,
11135 const struct devlink_trap_group *groups,
11136 size_t groups_count)
11140 mutex_lock(&devlink->lock);
11141 for (i = groups_count - 1; i >= 0; i--)
11142 devlink_trap_group_unregister(devlink, &groups[i]);
11143 mutex_unlock(&devlink->lock);
11145 EXPORT_SYMBOL_GPL(devlink_trap_groups_unregister);
11148 devlink_trap_policer_notify(struct devlink *devlink,
11149 const struct devlink_trap_policer_item *policer_item,
11150 enum devlink_command cmd)
11152 struct sk_buff *msg;
11155 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_POLICER_NEW &&
11156 cmd != DEVLINK_CMD_TRAP_POLICER_DEL);
11157 if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
11160 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11164 err = devlink_nl_trap_policer_fill(msg, devlink, policer_item, cmd, 0,
11171 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
11172 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
11176 devlink_trap_policer_register(struct devlink *devlink,
11177 const struct devlink_trap_policer *policer)
11179 struct devlink_trap_policer_item *policer_item;
11182 if (devlink_trap_policer_item_lookup(devlink, policer->id))
11185 policer_item = kzalloc(sizeof(*policer_item), GFP_KERNEL);
11189 policer_item->policer = policer;
11190 policer_item->rate = policer->init_rate;
11191 policer_item->burst = policer->init_burst;
11193 if (devlink->ops->trap_policer_init) {
11194 err = devlink->ops->trap_policer_init(devlink, policer);
11196 goto err_policer_init;
11199 list_add_tail(&policer_item->list, &devlink->trap_policer_list);
11200 devlink_trap_policer_notify(devlink, policer_item,
11201 DEVLINK_CMD_TRAP_POLICER_NEW);
11206 kfree(policer_item);
11211 devlink_trap_policer_unregister(struct devlink *devlink,
11212 const struct devlink_trap_policer *policer)
11214 struct devlink_trap_policer_item *policer_item;
11216 policer_item = devlink_trap_policer_item_lookup(devlink, policer->id);
11217 if (WARN_ON_ONCE(!policer_item))
11220 devlink_trap_policer_notify(devlink, policer_item,
11221 DEVLINK_CMD_TRAP_POLICER_DEL);
11222 list_del(&policer_item->list);
11223 if (devlink->ops->trap_policer_fini)
11224 devlink->ops->trap_policer_fini(devlink, policer);
11225 kfree(policer_item);
11229 * devlink_trap_policers_register - Register packet trap policers with devlink.
11230 * @devlink: devlink.
11231 * @policers: Packet trap policers.
11232 * @policers_count: Count of provided packet trap policers.
11234 * Return: Non-zero value on failure.
11237 devlink_trap_policers_register(struct devlink *devlink,
11238 const struct devlink_trap_policer *policers,
11239 size_t policers_count)
11243 mutex_lock(&devlink->lock);
11244 for (i = 0; i < policers_count; i++) {
11245 const struct devlink_trap_policer *policer = &policers[i];
11247 if (WARN_ON(policer->id == 0 ||
11248 policer->max_rate < policer->min_rate ||
11249 policer->max_burst < policer->min_burst)) {
11251 goto err_trap_policer_verify;
11254 err = devlink_trap_policer_register(devlink, policer);
11256 goto err_trap_policer_register;
11258 mutex_unlock(&devlink->lock);
11262 err_trap_policer_register:
11263 err_trap_policer_verify:
11264 for (i--; i >= 0; i--)
11265 devlink_trap_policer_unregister(devlink, &policers[i]);
11266 mutex_unlock(&devlink->lock);
11269 EXPORT_SYMBOL_GPL(devlink_trap_policers_register);
11272 * devlink_trap_policers_unregister - Unregister packet trap policers from devlink.
11273 * @devlink: devlink.
11274 * @policers: Packet trap policers.
11275 * @policers_count: Count of provided packet trap policers.
11278 devlink_trap_policers_unregister(struct devlink *devlink,
11279 const struct devlink_trap_policer *policers,
11280 size_t policers_count)
11284 mutex_lock(&devlink->lock);
11285 for (i = policers_count - 1; i >= 0; i--)
11286 devlink_trap_policer_unregister(devlink, &policers[i]);
11287 mutex_unlock(&devlink->lock);
11289 EXPORT_SYMBOL_GPL(devlink_trap_policers_unregister);
11291 static void __devlink_compat_running_version(struct devlink *devlink,
11292 char *buf, size_t len)
11294 const struct nlattr *nlattr;
11295 struct devlink_info_req req;
11296 struct sk_buff *msg;
11299 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11304 err = devlink->ops->info_get(devlink, &req, NULL);
11308 nla_for_each_attr(nlattr, (void *)msg->data, msg->len, rem) {
11309 const struct nlattr *kv;
11312 if (nla_type(nlattr) != DEVLINK_ATTR_INFO_VERSION_RUNNING)
11315 nla_for_each_nested(kv, nlattr, rem_kv) {
11316 if (nla_type(kv) != DEVLINK_ATTR_INFO_VERSION_VALUE)
11319 strlcat(buf, nla_data(kv), len);
11320 strlcat(buf, " ", len);
11327 static struct devlink_port *netdev_to_devlink_port(struct net_device *dev)
11329 if (!dev->netdev_ops->ndo_get_devlink_port)
11332 return dev->netdev_ops->ndo_get_devlink_port(dev);
11335 void devlink_compat_running_version(struct devlink *devlink,
11336 char *buf, size_t len)
11338 if (!devlink->ops->info_get)
11341 mutex_lock(&devlink->lock);
11342 __devlink_compat_running_version(devlink, buf, len);
11343 mutex_unlock(&devlink->lock);
11346 int devlink_compat_flash_update(struct devlink *devlink, const char *file_name)
11348 struct devlink_flash_update_params params = {};
11351 if (!devlink->ops->flash_update)
11352 return -EOPNOTSUPP;
11354 ret = request_firmware(¶ms.fw, file_name, devlink->dev);
11358 mutex_lock(&devlink->lock);
11359 devlink_flash_update_begin_notify(devlink);
11360 ret = devlink->ops->flash_update(devlink, ¶ms, NULL);
11361 devlink_flash_update_end_notify(devlink);
11362 mutex_unlock(&devlink->lock);
11364 release_firmware(params.fw);
11369 int devlink_compat_phys_port_name_get(struct net_device *dev,
11370 char *name, size_t len)
11372 struct devlink_port *devlink_port;
11374 /* RTNL mutex is held here which ensures that devlink_port
11375 * instance cannot disappear in the middle. No need to take
11376 * any devlink lock as only permanent values are accessed.
11380 devlink_port = netdev_to_devlink_port(dev);
11382 return -EOPNOTSUPP;
11384 return __devlink_port_phys_port_name_get(devlink_port, name, len);
11387 int devlink_compat_switch_id_get(struct net_device *dev,
11388 struct netdev_phys_item_id *ppid)
11390 struct devlink_port *devlink_port;
11392 /* Caller must hold RTNL mutex or reference to dev, which ensures that
11393 * devlink_port instance cannot disappear in the middle. No need to take
11394 * any devlink lock as only permanent values are accessed.
11396 devlink_port = netdev_to_devlink_port(dev);
11397 if (!devlink_port || !devlink_port->switch_port)
11398 return -EOPNOTSUPP;
11400 memcpy(ppid, &devlink_port->attrs.switch_id, sizeof(*ppid));
11405 static void __net_exit devlink_pernet_pre_exit(struct net *net)
11407 struct devlink *devlink;
11408 u32 actions_performed;
11409 unsigned long index;
11412 /* In case network namespace is getting destroyed, reload
11413 * all devlink instances from this namespace into init_net.
11415 mutex_lock(&devlink_mutex);
11416 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
11417 if (!devlink_try_get(devlink))
11420 if (!net_eq(devlink_net(devlink), net))
11423 WARN_ON(!(devlink->features & DEVLINK_F_RELOAD));
11424 err = devlink_reload(devlink, &init_net,
11425 DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
11426 DEVLINK_RELOAD_LIMIT_UNSPEC,
11427 &actions_performed, NULL);
11428 if (err && err != -EOPNOTSUPP)
11429 pr_warn("Failed to reload devlink instance into init_net\n");
11431 devlink_put(devlink);
11433 mutex_unlock(&devlink_mutex);
11436 static struct pernet_operations devlink_pernet_ops __net_initdata = {
11437 .pre_exit = devlink_pernet_pre_exit,
11440 static int __init devlink_init(void)
11444 err = genl_register_family(&devlink_nl_family);
11447 err = register_pernet_subsys(&devlink_pernet_ops);
11454 subsys_initcall(devlink_init);