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/kernel.h>
11 #include <linux/module.h>
12 #include <linux/types.h>
13 #include <linux/slab.h>
14 #include <linux/gfp.h>
15 #include <linux/device.h>
16 #include <linux/list.h>
17 #include <linux/netdevice.h>
18 #include <linux/spinlock.h>
19 #include <linux/refcount.h>
20 #include <linux/workqueue.h>
21 #include <linux/u64_stats_sync.h>
22 #include <linux/timekeeping.h>
23 #include <rdma/ib_verbs.h>
24 #include <net/netlink.h>
25 #include <net/genetlink.h>
26 #include <net/rtnetlink.h>
27 #include <net/net_namespace.h>
29 #include <net/devlink.h>
30 #define CREATE_TRACE_POINTS
31 #include <trace/events/devlink.h>
33 static struct devlink_dpipe_field devlink_dpipe_fields_ethernet[] = {
35 .name = "destination mac",
36 .id = DEVLINK_DPIPE_FIELD_ETHERNET_DST_MAC,
41 struct devlink_dpipe_header devlink_dpipe_header_ethernet = {
43 .id = DEVLINK_DPIPE_HEADER_ETHERNET,
44 .fields = devlink_dpipe_fields_ethernet,
45 .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ethernet),
48 EXPORT_SYMBOL(devlink_dpipe_header_ethernet);
50 static struct devlink_dpipe_field devlink_dpipe_fields_ipv4[] = {
52 .name = "destination ip",
53 .id = DEVLINK_DPIPE_FIELD_IPV4_DST_IP,
58 struct devlink_dpipe_header devlink_dpipe_header_ipv4 = {
60 .id = DEVLINK_DPIPE_HEADER_IPV4,
61 .fields = devlink_dpipe_fields_ipv4,
62 .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv4),
65 EXPORT_SYMBOL(devlink_dpipe_header_ipv4);
67 static struct devlink_dpipe_field devlink_dpipe_fields_ipv6[] = {
69 .name = "destination ip",
70 .id = DEVLINK_DPIPE_FIELD_IPV6_DST_IP,
75 struct devlink_dpipe_header devlink_dpipe_header_ipv6 = {
77 .id = DEVLINK_DPIPE_HEADER_IPV6,
78 .fields = devlink_dpipe_fields_ipv6,
79 .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv6),
82 EXPORT_SYMBOL(devlink_dpipe_header_ipv6);
84 EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwmsg);
85 EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwerr);
86 EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_trap_report);
88 static const struct nla_policy devlink_function_nl_policy[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1] = {
89 [DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR] = { .type = NLA_BINARY },
92 static LIST_HEAD(devlink_list);
96 * An overall lock guarding every operation coming from userspace.
97 * It also guards devlink devices list and it is taken when
98 * driver registers/unregisters it.
100 static DEFINE_MUTEX(devlink_mutex);
102 struct net *devlink_net(const struct devlink *devlink)
104 return read_pnet(&devlink->_net);
106 EXPORT_SYMBOL_GPL(devlink_net);
108 static void __devlink_net_set(struct devlink *devlink, struct net *net)
110 write_pnet(&devlink->_net, net);
113 void devlink_net_set(struct devlink *devlink, struct net *net)
115 if (WARN_ON(devlink->registered))
117 __devlink_net_set(devlink, net);
119 EXPORT_SYMBOL_GPL(devlink_net_set);
121 static struct devlink *devlink_get_from_attrs(struct net *net,
122 struct nlattr **attrs)
124 struct devlink *devlink;
128 if (!attrs[DEVLINK_ATTR_BUS_NAME] || !attrs[DEVLINK_ATTR_DEV_NAME])
129 return ERR_PTR(-EINVAL);
131 busname = nla_data(attrs[DEVLINK_ATTR_BUS_NAME]);
132 devname = nla_data(attrs[DEVLINK_ATTR_DEV_NAME]);
134 lockdep_assert_held(&devlink_mutex);
136 list_for_each_entry(devlink, &devlink_list, list) {
137 if (strcmp(devlink->dev->bus->name, busname) == 0 &&
138 strcmp(dev_name(devlink->dev), devname) == 0 &&
139 net_eq(devlink_net(devlink), net))
143 return ERR_PTR(-ENODEV);
146 static struct devlink *devlink_get_from_info(struct genl_info *info)
148 return devlink_get_from_attrs(genl_info_net(info), info->attrs);
151 static struct devlink_port *devlink_port_get_by_index(struct devlink *devlink,
152 unsigned int port_index)
154 struct devlink_port *devlink_port;
156 list_for_each_entry(devlink_port, &devlink->port_list, list) {
157 if (devlink_port->index == port_index)
163 static bool devlink_port_index_exists(struct devlink *devlink,
164 unsigned int port_index)
166 return devlink_port_get_by_index(devlink, port_index);
169 static struct devlink_port *devlink_port_get_from_attrs(struct devlink *devlink,
170 struct nlattr **attrs)
172 if (attrs[DEVLINK_ATTR_PORT_INDEX]) {
173 u32 port_index = nla_get_u32(attrs[DEVLINK_ATTR_PORT_INDEX]);
174 struct devlink_port *devlink_port;
176 devlink_port = devlink_port_get_by_index(devlink, port_index);
178 return ERR_PTR(-ENODEV);
181 return ERR_PTR(-EINVAL);
184 static struct devlink_port *devlink_port_get_from_info(struct devlink *devlink,
185 struct genl_info *info)
187 return devlink_port_get_from_attrs(devlink, info->attrs);
191 struct list_head list;
194 u16 ingress_pools_count;
195 u16 egress_pools_count;
196 u16 ingress_tc_count;
200 static u16 devlink_sb_pool_count(struct devlink_sb *devlink_sb)
202 return devlink_sb->ingress_pools_count + devlink_sb->egress_pools_count;
205 static struct devlink_sb *devlink_sb_get_by_index(struct devlink *devlink,
206 unsigned int sb_index)
208 struct devlink_sb *devlink_sb;
210 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
211 if (devlink_sb->index == sb_index)
217 static bool devlink_sb_index_exists(struct devlink *devlink,
218 unsigned int sb_index)
220 return devlink_sb_get_by_index(devlink, sb_index);
223 static struct devlink_sb *devlink_sb_get_from_attrs(struct devlink *devlink,
224 struct nlattr **attrs)
226 if (attrs[DEVLINK_ATTR_SB_INDEX]) {
227 u32 sb_index = nla_get_u32(attrs[DEVLINK_ATTR_SB_INDEX]);
228 struct devlink_sb *devlink_sb;
230 devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
232 return ERR_PTR(-ENODEV);
235 return ERR_PTR(-EINVAL);
238 static struct devlink_sb *devlink_sb_get_from_info(struct devlink *devlink,
239 struct genl_info *info)
241 return devlink_sb_get_from_attrs(devlink, info->attrs);
244 static int devlink_sb_pool_index_get_from_attrs(struct devlink_sb *devlink_sb,
245 struct nlattr **attrs,
250 if (!attrs[DEVLINK_ATTR_SB_POOL_INDEX])
253 val = nla_get_u16(attrs[DEVLINK_ATTR_SB_POOL_INDEX]);
254 if (val >= devlink_sb_pool_count(devlink_sb))
260 static int devlink_sb_pool_index_get_from_info(struct devlink_sb *devlink_sb,
261 struct genl_info *info,
264 return devlink_sb_pool_index_get_from_attrs(devlink_sb, info->attrs,
269 devlink_sb_pool_type_get_from_attrs(struct nlattr **attrs,
270 enum devlink_sb_pool_type *p_pool_type)
274 if (!attrs[DEVLINK_ATTR_SB_POOL_TYPE])
277 val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_TYPE]);
278 if (val != DEVLINK_SB_POOL_TYPE_INGRESS &&
279 val != DEVLINK_SB_POOL_TYPE_EGRESS)
286 devlink_sb_pool_type_get_from_info(struct genl_info *info,
287 enum devlink_sb_pool_type *p_pool_type)
289 return devlink_sb_pool_type_get_from_attrs(info->attrs, p_pool_type);
293 devlink_sb_th_type_get_from_attrs(struct nlattr **attrs,
294 enum devlink_sb_threshold_type *p_th_type)
298 if (!attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE])
301 val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE]);
302 if (val != DEVLINK_SB_THRESHOLD_TYPE_STATIC &&
303 val != DEVLINK_SB_THRESHOLD_TYPE_DYNAMIC)
310 devlink_sb_th_type_get_from_info(struct genl_info *info,
311 enum devlink_sb_threshold_type *p_th_type)
313 return devlink_sb_th_type_get_from_attrs(info->attrs, p_th_type);
317 devlink_sb_tc_index_get_from_attrs(struct devlink_sb *devlink_sb,
318 struct nlattr **attrs,
319 enum devlink_sb_pool_type pool_type,
324 if (!attrs[DEVLINK_ATTR_SB_TC_INDEX])
327 val = nla_get_u16(attrs[DEVLINK_ATTR_SB_TC_INDEX]);
328 if (pool_type == DEVLINK_SB_POOL_TYPE_INGRESS &&
329 val >= devlink_sb->ingress_tc_count)
331 if (pool_type == DEVLINK_SB_POOL_TYPE_EGRESS &&
332 val >= devlink_sb->egress_tc_count)
339 devlink_sb_tc_index_get_from_info(struct devlink_sb *devlink_sb,
340 struct genl_info *info,
341 enum devlink_sb_pool_type pool_type,
344 return devlink_sb_tc_index_get_from_attrs(devlink_sb, info->attrs,
345 pool_type, p_tc_index);
348 struct devlink_region {
349 struct devlink *devlink;
350 struct devlink_port *port;
351 struct list_head list;
353 const struct devlink_region_ops *ops;
354 const struct devlink_port_region_ops *port_ops;
356 struct list_head snapshot_list;
362 struct devlink_snapshot {
363 struct list_head list;
364 struct devlink_region *region;
369 static struct devlink_region *
370 devlink_region_get_by_name(struct devlink *devlink, const char *region_name)
372 struct devlink_region *region;
374 list_for_each_entry(region, &devlink->region_list, list)
375 if (!strcmp(region->ops->name, region_name))
381 static struct devlink_region *
382 devlink_port_region_get_by_name(struct devlink_port *port,
383 const char *region_name)
385 struct devlink_region *region;
387 list_for_each_entry(region, &port->region_list, list)
388 if (!strcmp(region->ops->name, region_name))
394 static struct devlink_snapshot *
395 devlink_region_snapshot_get_by_id(struct devlink_region *region, u32 id)
397 struct devlink_snapshot *snapshot;
399 list_for_each_entry(snapshot, ®ion->snapshot_list, list)
400 if (snapshot->id == id)
406 #define DEVLINK_NL_FLAG_NEED_PORT BIT(0)
407 #define DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT BIT(1)
409 /* The per devlink instance lock is taken by default in the pre-doit
410 * operation, yet several commands do not require this. The global
411 * devlink lock is taken and protects from disruption by user-calls.
413 #define DEVLINK_NL_FLAG_NO_LOCK BIT(2)
415 static int devlink_nl_pre_doit(const struct genl_ops *ops,
416 struct sk_buff *skb, struct genl_info *info)
418 struct devlink_port *devlink_port;
419 struct devlink *devlink;
422 mutex_lock(&devlink_mutex);
423 devlink = devlink_get_from_info(info);
424 if (IS_ERR(devlink)) {
425 mutex_unlock(&devlink_mutex);
426 return PTR_ERR(devlink);
428 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
429 mutex_lock(&devlink->lock);
430 info->user_ptr[0] = devlink;
431 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT) {
432 devlink_port = devlink_port_get_from_info(devlink, info);
433 if (IS_ERR(devlink_port)) {
434 err = PTR_ERR(devlink_port);
437 info->user_ptr[1] = devlink_port;
438 } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT) {
439 devlink_port = devlink_port_get_from_info(devlink, info);
440 if (!IS_ERR(devlink_port))
441 info->user_ptr[1] = devlink_port;
446 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
447 mutex_unlock(&devlink->lock);
448 mutex_unlock(&devlink_mutex);
452 static void devlink_nl_post_doit(const struct genl_ops *ops,
453 struct sk_buff *skb, struct genl_info *info)
455 struct devlink *devlink;
457 devlink = info->user_ptr[0];
458 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
459 mutex_unlock(&devlink->lock);
460 mutex_unlock(&devlink_mutex);
463 static struct genl_family devlink_nl_family;
465 enum devlink_multicast_groups {
466 DEVLINK_MCGRP_CONFIG,
469 static const struct genl_multicast_group devlink_nl_mcgrps[] = {
470 [DEVLINK_MCGRP_CONFIG] = { .name = DEVLINK_GENL_MCGRP_CONFIG_NAME },
473 static int devlink_nl_put_handle(struct sk_buff *msg, struct devlink *devlink)
475 if (nla_put_string(msg, DEVLINK_ATTR_BUS_NAME, devlink->dev->bus->name))
477 if (nla_put_string(msg, DEVLINK_ATTR_DEV_NAME, dev_name(devlink->dev)))
482 struct devlink_reload_combination {
483 enum devlink_reload_action action;
484 enum devlink_reload_limit limit;
487 static const struct devlink_reload_combination devlink_reload_invalid_combinations[] = {
489 /* can't reinitialize driver with no down time */
490 .action = DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
491 .limit = DEVLINK_RELOAD_LIMIT_NO_RESET,
496 devlink_reload_combination_is_invalid(enum devlink_reload_action action,
497 enum devlink_reload_limit limit)
501 for (i = 0; i < ARRAY_SIZE(devlink_reload_invalid_combinations); i++)
502 if (devlink_reload_invalid_combinations[i].action == action &&
503 devlink_reload_invalid_combinations[i].limit == limit)
509 devlink_reload_action_is_supported(struct devlink *devlink, enum devlink_reload_action action)
511 return test_bit(action, &devlink->ops->reload_actions);
515 devlink_reload_limit_is_supported(struct devlink *devlink, enum devlink_reload_limit limit)
517 return test_bit(limit, &devlink->ops->reload_limits);
520 static int devlink_reload_stat_put(struct sk_buff *msg,
521 enum devlink_reload_limit limit, u32 value)
523 struct nlattr *reload_stats_entry;
525 reload_stats_entry = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_STATS_ENTRY);
526 if (!reload_stats_entry)
529 if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_STATS_LIMIT, limit) ||
530 nla_put_u32(msg, DEVLINK_ATTR_RELOAD_STATS_VALUE, value))
531 goto nla_put_failure;
532 nla_nest_end(msg, reload_stats_entry);
536 nla_nest_cancel(msg, reload_stats_entry);
540 static int devlink_reload_stats_put(struct sk_buff *msg, struct devlink *devlink, bool is_remote)
542 struct nlattr *reload_stats_attr, *act_info, *act_stats;
547 reload_stats_attr = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_STATS);
549 reload_stats_attr = nla_nest_start(msg, DEVLINK_ATTR_REMOTE_RELOAD_STATS);
551 if (!reload_stats_attr)
554 for (i = 0; i <= DEVLINK_RELOAD_ACTION_MAX; i++) {
556 !devlink_reload_action_is_supported(devlink, i)) ||
557 i == DEVLINK_RELOAD_ACTION_UNSPEC)
559 act_info = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_ACTION_INFO);
561 goto nla_put_failure;
563 if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_ACTION, i))
564 goto action_info_nest_cancel;
565 act_stats = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_ACTION_STATS);
567 goto action_info_nest_cancel;
569 for (j = 0; j <= DEVLINK_RELOAD_LIMIT_MAX; j++) {
570 /* Remote stats are shown even if not locally supported.
571 * Stats of actions with unspecified limit are shown
572 * though drivers don't need to register unspecified
575 if ((!is_remote && j != DEVLINK_RELOAD_LIMIT_UNSPEC &&
576 !devlink_reload_limit_is_supported(devlink, j)) ||
577 devlink_reload_combination_is_invalid(i, j))
580 stat_idx = j * __DEVLINK_RELOAD_ACTION_MAX + i;
582 value = devlink->stats.reload_stats[stat_idx];
584 value = devlink->stats.remote_reload_stats[stat_idx];
585 if (devlink_reload_stat_put(msg, j, value))
586 goto action_stats_nest_cancel;
588 nla_nest_end(msg, act_stats);
589 nla_nest_end(msg, act_info);
591 nla_nest_end(msg, reload_stats_attr);
594 action_stats_nest_cancel:
595 nla_nest_cancel(msg, act_stats);
596 action_info_nest_cancel:
597 nla_nest_cancel(msg, act_info);
599 nla_nest_cancel(msg, reload_stats_attr);
603 static int devlink_nl_fill(struct sk_buff *msg, struct devlink *devlink,
604 enum devlink_command cmd, u32 portid,
607 struct nlattr *dev_stats;
610 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
614 if (devlink_nl_put_handle(msg, devlink))
615 goto nla_put_failure;
616 if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_FAILED, devlink->reload_failed))
617 goto nla_put_failure;
619 dev_stats = nla_nest_start(msg, DEVLINK_ATTR_DEV_STATS);
621 goto nla_put_failure;
623 if (devlink_reload_stats_put(msg, devlink, false))
624 goto dev_stats_nest_cancel;
625 if (devlink_reload_stats_put(msg, devlink, true))
626 goto dev_stats_nest_cancel;
628 nla_nest_end(msg, dev_stats);
629 genlmsg_end(msg, hdr);
632 dev_stats_nest_cancel:
633 nla_nest_cancel(msg, dev_stats);
635 genlmsg_cancel(msg, hdr);
639 static void devlink_notify(struct devlink *devlink, enum devlink_command cmd)
644 WARN_ON(cmd != DEVLINK_CMD_NEW && cmd != DEVLINK_CMD_DEL);
646 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
650 err = devlink_nl_fill(msg, devlink, cmd, 0, 0, 0);
656 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
657 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
660 static int devlink_nl_port_attrs_put(struct sk_buff *msg,
661 struct devlink_port *devlink_port)
663 struct devlink_port_attrs *attrs = &devlink_port->attrs;
665 if (!devlink_port->attrs_set)
668 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_LANES, attrs->lanes))
671 if (nla_put_u8(msg, DEVLINK_ATTR_PORT_SPLITTABLE, attrs->splittable))
673 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_FLAVOUR, attrs->flavour))
675 switch (devlink_port->attrs.flavour) {
676 case DEVLINK_PORT_FLAVOUR_PCI_PF:
677 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
678 attrs->pci_pf.controller) ||
679 nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_pf.pf))
681 if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_pf.external))
684 case DEVLINK_PORT_FLAVOUR_PCI_VF:
685 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
686 attrs->pci_vf.controller) ||
687 nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_vf.pf) ||
688 nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_VF_NUMBER, attrs->pci_vf.vf))
690 if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_vf.external))
693 case DEVLINK_PORT_FLAVOUR_PHYSICAL:
694 case DEVLINK_PORT_FLAVOUR_CPU:
695 case DEVLINK_PORT_FLAVOUR_DSA:
696 case DEVLINK_PORT_FLAVOUR_VIRTUAL:
697 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_NUMBER,
698 attrs->phys.port_number))
702 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_GROUP,
703 attrs->phys.port_number))
705 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_SUBPORT_NUMBER,
706 attrs->phys.split_subport_number))
716 devlink_nl_port_function_attrs_put(struct sk_buff *msg, struct devlink_port *port,
717 struct netlink_ext_ack *extack)
719 struct devlink *devlink = port->devlink;
720 const struct devlink_ops *ops;
721 struct nlattr *function_attr;
722 bool empty_nest = true;
725 function_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PORT_FUNCTION);
730 if (ops->port_function_hw_addr_get) {
732 u8 hw_addr[MAX_ADDR_LEN];
734 err = ops->port_function_hw_addr_get(devlink, port, hw_addr, &hw_addr_len, extack);
735 if (err == -EOPNOTSUPP) {
736 /* Port function attributes are optional for a port. If port doesn't
737 * support function attribute, returning -EOPNOTSUPP is not an error.
744 err = nla_put(msg, DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR, hw_addr_len, hw_addr);
751 if (err || empty_nest)
752 nla_nest_cancel(msg, function_attr);
754 nla_nest_end(msg, function_attr);
758 static int devlink_nl_port_fill(struct sk_buff *msg, struct devlink *devlink,
759 struct devlink_port *devlink_port,
760 enum devlink_command cmd, u32 portid,
762 struct netlink_ext_ack *extack)
766 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
770 if (devlink_nl_put_handle(msg, devlink))
771 goto nla_put_failure;
772 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
773 goto nla_put_failure;
775 /* Hold rtnl lock while accessing port's netdev attributes. */
777 spin_lock_bh(&devlink_port->type_lock);
778 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_TYPE, devlink_port->type))
779 goto nla_put_failure_type_locked;
780 if (devlink_port->desired_type != DEVLINK_PORT_TYPE_NOTSET &&
781 nla_put_u16(msg, DEVLINK_ATTR_PORT_DESIRED_TYPE,
782 devlink_port->desired_type))
783 goto nla_put_failure_type_locked;
784 if (devlink_port->type == DEVLINK_PORT_TYPE_ETH) {
785 struct net *net = devlink_net(devlink_port->devlink);
786 struct net_device *netdev = devlink_port->type_dev;
788 if (netdev && net_eq(net, dev_net(netdev)) &&
789 (nla_put_u32(msg, DEVLINK_ATTR_PORT_NETDEV_IFINDEX,
791 nla_put_string(msg, DEVLINK_ATTR_PORT_NETDEV_NAME,
793 goto nla_put_failure_type_locked;
795 if (devlink_port->type == DEVLINK_PORT_TYPE_IB) {
796 struct ib_device *ibdev = devlink_port->type_dev;
799 nla_put_string(msg, DEVLINK_ATTR_PORT_IBDEV_NAME,
801 goto nla_put_failure_type_locked;
803 spin_unlock_bh(&devlink_port->type_lock);
805 if (devlink_nl_port_attrs_put(msg, devlink_port))
806 goto nla_put_failure;
807 if (devlink_nl_port_function_attrs_put(msg, devlink_port, extack))
808 goto nla_put_failure;
810 genlmsg_end(msg, hdr);
813 nla_put_failure_type_locked:
814 spin_unlock_bh(&devlink_port->type_lock);
817 genlmsg_cancel(msg, hdr);
821 static void devlink_port_notify(struct devlink_port *devlink_port,
822 enum devlink_command cmd)
824 struct devlink *devlink = devlink_port->devlink;
828 if (!devlink_port->registered)
831 WARN_ON(cmd != DEVLINK_CMD_PORT_NEW && cmd != DEVLINK_CMD_PORT_DEL);
833 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
837 err = devlink_nl_port_fill(msg, devlink, devlink_port, cmd, 0, 0, 0,
844 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
845 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
848 static int devlink_nl_cmd_get_doit(struct sk_buff *skb, struct genl_info *info)
850 struct devlink *devlink = info->user_ptr[0];
854 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
858 err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
859 info->snd_portid, info->snd_seq, 0);
865 return genlmsg_reply(msg, info);
868 static int devlink_nl_cmd_get_dumpit(struct sk_buff *msg,
869 struct netlink_callback *cb)
871 struct devlink *devlink;
872 int start = cb->args[0];
876 mutex_lock(&devlink_mutex);
877 list_for_each_entry(devlink, &devlink_list, list) {
878 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
884 err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
885 NETLINK_CB(cb->skb).portid,
886 cb->nlh->nlmsg_seq, NLM_F_MULTI);
892 mutex_unlock(&devlink_mutex);
898 static int devlink_nl_cmd_port_get_doit(struct sk_buff *skb,
899 struct genl_info *info)
901 struct devlink_port *devlink_port = info->user_ptr[1];
902 struct devlink *devlink = devlink_port->devlink;
906 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
910 err = devlink_nl_port_fill(msg, devlink, devlink_port,
911 DEVLINK_CMD_PORT_NEW,
912 info->snd_portid, info->snd_seq, 0,
919 return genlmsg_reply(msg, info);
922 static int devlink_nl_cmd_port_get_dumpit(struct sk_buff *msg,
923 struct netlink_callback *cb)
925 struct devlink *devlink;
926 struct devlink_port *devlink_port;
927 int start = cb->args[0];
931 mutex_lock(&devlink_mutex);
932 list_for_each_entry(devlink, &devlink_list, list) {
933 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
935 mutex_lock(&devlink->lock);
936 list_for_each_entry(devlink_port, &devlink->port_list, list) {
941 err = devlink_nl_port_fill(msg, devlink, devlink_port,
943 NETLINK_CB(cb->skb).portid,
948 mutex_unlock(&devlink->lock);
953 mutex_unlock(&devlink->lock);
956 mutex_unlock(&devlink_mutex);
962 static int devlink_port_type_set(struct devlink *devlink,
963 struct devlink_port *devlink_port,
964 enum devlink_port_type port_type)
969 if (devlink->ops->port_type_set) {
970 if (port_type == devlink_port->type)
972 err = devlink->ops->port_type_set(devlink_port, port_type);
975 devlink_port->desired_type = port_type;
976 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
983 devlink_port_function_hw_addr_set(struct devlink *devlink, struct devlink_port *port,
984 const struct nlattr *attr, struct netlink_ext_ack *extack)
986 const struct devlink_ops *ops;
991 hw_addr = nla_data(attr);
992 hw_addr_len = nla_len(attr);
993 if (hw_addr_len > MAX_ADDR_LEN) {
994 NL_SET_ERR_MSG_MOD(extack, "Port function hardware address too long");
997 if (port->type == DEVLINK_PORT_TYPE_ETH) {
998 if (hw_addr_len != ETH_ALEN) {
999 NL_SET_ERR_MSG_MOD(extack, "Address must be 6 bytes for Ethernet device");
1002 if (!is_unicast_ether_addr(hw_addr)) {
1003 NL_SET_ERR_MSG_MOD(extack, "Non-unicast hardware address unsupported");
1009 if (!ops->port_function_hw_addr_set) {
1010 NL_SET_ERR_MSG_MOD(extack, "Port doesn't support function attributes");
1014 err = ops->port_function_hw_addr_set(devlink, port, hw_addr, hw_addr_len, extack);
1018 devlink_port_notify(port, DEVLINK_CMD_PORT_NEW);
1023 devlink_port_function_set(struct devlink *devlink, struct devlink_port *port,
1024 const struct nlattr *attr, struct netlink_ext_ack *extack)
1026 struct nlattr *tb[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1];
1029 err = nla_parse_nested(tb, DEVLINK_PORT_FUNCTION_ATTR_MAX, attr,
1030 devlink_function_nl_policy, extack);
1032 NL_SET_ERR_MSG_MOD(extack, "Fail to parse port function attributes");
1036 attr = tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR];
1038 err = devlink_port_function_hw_addr_set(devlink, port, attr, extack);
1043 static int devlink_nl_cmd_port_set_doit(struct sk_buff *skb,
1044 struct genl_info *info)
1046 struct devlink_port *devlink_port = info->user_ptr[1];
1047 struct devlink *devlink = devlink_port->devlink;
1050 if (info->attrs[DEVLINK_ATTR_PORT_TYPE]) {
1051 enum devlink_port_type port_type;
1053 port_type = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_TYPE]);
1054 err = devlink_port_type_set(devlink, devlink_port, port_type);
1059 if (info->attrs[DEVLINK_ATTR_PORT_FUNCTION]) {
1060 struct nlattr *attr = info->attrs[DEVLINK_ATTR_PORT_FUNCTION];
1061 struct netlink_ext_ack *extack = info->extack;
1063 err = devlink_port_function_set(devlink, devlink_port, attr, extack);
1071 static int devlink_port_split(struct devlink *devlink, u32 port_index,
1072 u32 count, struct netlink_ext_ack *extack)
1075 if (devlink->ops->port_split)
1076 return devlink->ops->port_split(devlink, port_index, count,
1081 static int devlink_nl_cmd_port_split_doit(struct sk_buff *skb,
1082 struct genl_info *info)
1084 struct devlink *devlink = info->user_ptr[0];
1085 struct devlink_port *devlink_port;
1089 if (!info->attrs[DEVLINK_ATTR_PORT_INDEX] ||
1090 !info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT])
1093 devlink_port = devlink_port_get_from_info(devlink, info);
1094 port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
1095 count = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT]);
1097 if (IS_ERR(devlink_port))
1100 if (!devlink_port->attrs.splittable) {
1101 /* Split ports cannot be split. */
1102 if (devlink_port->attrs.split)
1103 NL_SET_ERR_MSG_MOD(info->extack, "Port cannot be split further");
1105 NL_SET_ERR_MSG_MOD(info->extack, "Port cannot be split");
1109 if (count < 2 || !is_power_of_2(count) || count > devlink_port->attrs.lanes) {
1110 NL_SET_ERR_MSG_MOD(info->extack, "Invalid split count");
1114 return devlink_port_split(devlink, port_index, count, info->extack);
1117 static int devlink_port_unsplit(struct devlink *devlink, u32 port_index,
1118 struct netlink_ext_ack *extack)
1121 if (devlink->ops->port_unsplit)
1122 return devlink->ops->port_unsplit(devlink, port_index, extack);
1126 static int devlink_nl_cmd_port_unsplit_doit(struct sk_buff *skb,
1127 struct genl_info *info)
1129 struct devlink *devlink = info->user_ptr[0];
1132 if (!info->attrs[DEVLINK_ATTR_PORT_INDEX])
1135 port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
1136 return devlink_port_unsplit(devlink, port_index, info->extack);
1139 static int devlink_nl_sb_fill(struct sk_buff *msg, struct devlink *devlink,
1140 struct devlink_sb *devlink_sb,
1141 enum devlink_command cmd, u32 portid,
1146 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1150 if (devlink_nl_put_handle(msg, devlink))
1151 goto nla_put_failure;
1152 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
1153 goto nla_put_failure;
1154 if (nla_put_u32(msg, DEVLINK_ATTR_SB_SIZE, devlink_sb->size))
1155 goto nla_put_failure;
1156 if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_POOL_COUNT,
1157 devlink_sb->ingress_pools_count))
1158 goto nla_put_failure;
1159 if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_POOL_COUNT,
1160 devlink_sb->egress_pools_count))
1161 goto nla_put_failure;
1162 if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_TC_COUNT,
1163 devlink_sb->ingress_tc_count))
1164 goto nla_put_failure;
1165 if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_TC_COUNT,
1166 devlink_sb->egress_tc_count))
1167 goto nla_put_failure;
1169 genlmsg_end(msg, hdr);
1173 genlmsg_cancel(msg, hdr);
1177 static int devlink_nl_cmd_sb_get_doit(struct sk_buff *skb,
1178 struct genl_info *info)
1180 struct devlink *devlink = info->user_ptr[0];
1181 struct devlink_sb *devlink_sb;
1182 struct sk_buff *msg;
1185 devlink_sb = devlink_sb_get_from_info(devlink, info);
1186 if (IS_ERR(devlink_sb))
1187 return PTR_ERR(devlink_sb);
1189 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1193 err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
1195 info->snd_portid, info->snd_seq, 0);
1201 return genlmsg_reply(msg, info);
1204 static int devlink_nl_cmd_sb_get_dumpit(struct sk_buff *msg,
1205 struct netlink_callback *cb)
1207 struct devlink *devlink;
1208 struct devlink_sb *devlink_sb;
1209 int start = cb->args[0];
1213 mutex_lock(&devlink_mutex);
1214 list_for_each_entry(devlink, &devlink_list, list) {
1215 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
1217 mutex_lock(&devlink->lock);
1218 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
1223 err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
1225 NETLINK_CB(cb->skb).portid,
1229 mutex_unlock(&devlink->lock);
1234 mutex_unlock(&devlink->lock);
1237 mutex_unlock(&devlink_mutex);
1243 static int devlink_nl_sb_pool_fill(struct sk_buff *msg, struct devlink *devlink,
1244 struct devlink_sb *devlink_sb,
1245 u16 pool_index, enum devlink_command cmd,
1246 u32 portid, u32 seq, int flags)
1248 struct devlink_sb_pool_info pool_info;
1252 err = devlink->ops->sb_pool_get(devlink, devlink_sb->index,
1253 pool_index, &pool_info);
1257 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1261 if (devlink_nl_put_handle(msg, devlink))
1262 goto nla_put_failure;
1263 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
1264 goto nla_put_failure;
1265 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
1266 goto nla_put_failure;
1267 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_info.pool_type))
1268 goto nla_put_failure;
1269 if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_SIZE, pool_info.size))
1270 goto nla_put_failure;
1271 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE,
1272 pool_info.threshold_type))
1273 goto nla_put_failure;
1274 if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_CELL_SIZE,
1275 pool_info.cell_size))
1276 goto nla_put_failure;
1278 genlmsg_end(msg, hdr);
1282 genlmsg_cancel(msg, hdr);
1286 static int devlink_nl_cmd_sb_pool_get_doit(struct sk_buff *skb,
1287 struct genl_info *info)
1289 struct devlink *devlink = info->user_ptr[0];
1290 struct devlink_sb *devlink_sb;
1291 struct sk_buff *msg;
1295 devlink_sb = devlink_sb_get_from_info(devlink, info);
1296 if (IS_ERR(devlink_sb))
1297 return PTR_ERR(devlink_sb);
1299 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1304 if (!devlink->ops->sb_pool_get)
1307 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1311 err = devlink_nl_sb_pool_fill(msg, devlink, devlink_sb, pool_index,
1312 DEVLINK_CMD_SB_POOL_NEW,
1313 info->snd_portid, info->snd_seq, 0);
1319 return genlmsg_reply(msg, info);
1322 static int __sb_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
1323 struct devlink *devlink,
1324 struct devlink_sb *devlink_sb,
1325 u32 portid, u32 seq)
1327 u16 pool_count = devlink_sb_pool_count(devlink_sb);
1331 for (pool_index = 0; pool_index < pool_count; pool_index++) {
1332 if (*p_idx < start) {
1336 err = devlink_nl_sb_pool_fill(msg, devlink,
1339 DEVLINK_CMD_SB_POOL_NEW,
1340 portid, seq, NLM_F_MULTI);
1348 static int devlink_nl_cmd_sb_pool_get_dumpit(struct sk_buff *msg,
1349 struct netlink_callback *cb)
1351 struct devlink *devlink;
1352 struct devlink_sb *devlink_sb;
1353 int start = cb->args[0];
1357 mutex_lock(&devlink_mutex);
1358 list_for_each_entry(devlink, &devlink_list, list) {
1359 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
1360 !devlink->ops->sb_pool_get)
1362 mutex_lock(&devlink->lock);
1363 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
1364 err = __sb_pool_get_dumpit(msg, start, &idx, devlink,
1366 NETLINK_CB(cb->skb).portid,
1367 cb->nlh->nlmsg_seq);
1368 if (err == -EOPNOTSUPP) {
1371 mutex_unlock(&devlink->lock);
1375 mutex_unlock(&devlink->lock);
1378 mutex_unlock(&devlink_mutex);
1380 if (err != -EMSGSIZE)
1387 static int devlink_sb_pool_set(struct devlink *devlink, unsigned int sb_index,
1388 u16 pool_index, u32 size,
1389 enum devlink_sb_threshold_type threshold_type,
1390 struct netlink_ext_ack *extack)
1393 const struct devlink_ops *ops = devlink->ops;
1395 if (ops->sb_pool_set)
1396 return ops->sb_pool_set(devlink, sb_index, pool_index,
1397 size, threshold_type, extack);
1401 static int devlink_nl_cmd_sb_pool_set_doit(struct sk_buff *skb,
1402 struct genl_info *info)
1404 struct devlink *devlink = info->user_ptr[0];
1405 enum devlink_sb_threshold_type threshold_type;
1406 struct devlink_sb *devlink_sb;
1411 devlink_sb = devlink_sb_get_from_info(devlink, info);
1412 if (IS_ERR(devlink_sb))
1413 return PTR_ERR(devlink_sb);
1415 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1420 err = devlink_sb_th_type_get_from_info(info, &threshold_type);
1424 if (!info->attrs[DEVLINK_ATTR_SB_POOL_SIZE])
1427 size = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_POOL_SIZE]);
1428 return devlink_sb_pool_set(devlink, devlink_sb->index,
1429 pool_index, size, threshold_type,
1433 static int devlink_nl_sb_port_pool_fill(struct sk_buff *msg,
1434 struct devlink *devlink,
1435 struct devlink_port *devlink_port,
1436 struct devlink_sb *devlink_sb,
1438 enum devlink_command cmd,
1439 u32 portid, u32 seq, int flags)
1441 const struct devlink_ops *ops = devlink->ops;
1446 err = ops->sb_port_pool_get(devlink_port, devlink_sb->index,
1447 pool_index, &threshold);
1451 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1455 if (devlink_nl_put_handle(msg, devlink))
1456 goto nla_put_failure;
1457 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
1458 goto nla_put_failure;
1459 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
1460 goto nla_put_failure;
1461 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
1462 goto nla_put_failure;
1463 if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
1464 goto nla_put_failure;
1466 if (ops->sb_occ_port_pool_get) {
1470 err = ops->sb_occ_port_pool_get(devlink_port, devlink_sb->index,
1471 pool_index, &cur, &max);
1472 if (err && err != -EOPNOTSUPP)
1473 goto sb_occ_get_failure;
1475 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
1476 goto nla_put_failure;
1477 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
1478 goto nla_put_failure;
1482 genlmsg_end(msg, hdr);
1488 genlmsg_cancel(msg, hdr);
1492 static int devlink_nl_cmd_sb_port_pool_get_doit(struct sk_buff *skb,
1493 struct genl_info *info)
1495 struct devlink_port *devlink_port = info->user_ptr[1];
1496 struct devlink *devlink = devlink_port->devlink;
1497 struct devlink_sb *devlink_sb;
1498 struct sk_buff *msg;
1502 devlink_sb = devlink_sb_get_from_info(devlink, info);
1503 if (IS_ERR(devlink_sb))
1504 return PTR_ERR(devlink_sb);
1506 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1511 if (!devlink->ops->sb_port_pool_get)
1514 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1518 err = devlink_nl_sb_port_pool_fill(msg, devlink, devlink_port,
1519 devlink_sb, pool_index,
1520 DEVLINK_CMD_SB_PORT_POOL_NEW,
1521 info->snd_portid, info->snd_seq, 0);
1527 return genlmsg_reply(msg, info);
1530 static int __sb_port_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
1531 struct devlink *devlink,
1532 struct devlink_sb *devlink_sb,
1533 u32 portid, u32 seq)
1535 struct devlink_port *devlink_port;
1536 u16 pool_count = devlink_sb_pool_count(devlink_sb);
1540 list_for_each_entry(devlink_port, &devlink->port_list, list) {
1541 for (pool_index = 0; pool_index < pool_count; pool_index++) {
1542 if (*p_idx < start) {
1546 err = devlink_nl_sb_port_pool_fill(msg, devlink,
1550 DEVLINK_CMD_SB_PORT_POOL_NEW,
1561 static int devlink_nl_cmd_sb_port_pool_get_dumpit(struct sk_buff *msg,
1562 struct netlink_callback *cb)
1564 struct devlink *devlink;
1565 struct devlink_sb *devlink_sb;
1566 int start = cb->args[0];
1570 mutex_lock(&devlink_mutex);
1571 list_for_each_entry(devlink, &devlink_list, list) {
1572 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
1573 !devlink->ops->sb_port_pool_get)
1575 mutex_lock(&devlink->lock);
1576 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
1577 err = __sb_port_pool_get_dumpit(msg, start, &idx,
1578 devlink, devlink_sb,
1579 NETLINK_CB(cb->skb).portid,
1580 cb->nlh->nlmsg_seq);
1581 if (err == -EOPNOTSUPP) {
1584 mutex_unlock(&devlink->lock);
1588 mutex_unlock(&devlink->lock);
1591 mutex_unlock(&devlink_mutex);
1593 if (err != -EMSGSIZE)
1600 static int devlink_sb_port_pool_set(struct devlink_port *devlink_port,
1601 unsigned int sb_index, u16 pool_index,
1603 struct netlink_ext_ack *extack)
1606 const struct devlink_ops *ops = devlink_port->devlink->ops;
1608 if (ops->sb_port_pool_set)
1609 return ops->sb_port_pool_set(devlink_port, sb_index,
1610 pool_index, threshold, extack);
1614 static int devlink_nl_cmd_sb_port_pool_set_doit(struct sk_buff *skb,
1615 struct genl_info *info)
1617 struct devlink_port *devlink_port = info->user_ptr[1];
1618 struct devlink *devlink = info->user_ptr[0];
1619 struct devlink_sb *devlink_sb;
1624 devlink_sb = devlink_sb_get_from_info(devlink, info);
1625 if (IS_ERR(devlink_sb))
1626 return PTR_ERR(devlink_sb);
1628 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1633 if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD])
1636 threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
1637 return devlink_sb_port_pool_set(devlink_port, devlink_sb->index,
1638 pool_index, threshold, info->extack);
1642 devlink_nl_sb_tc_pool_bind_fill(struct sk_buff *msg, struct devlink *devlink,
1643 struct devlink_port *devlink_port,
1644 struct devlink_sb *devlink_sb, u16 tc_index,
1645 enum devlink_sb_pool_type pool_type,
1646 enum devlink_command cmd,
1647 u32 portid, u32 seq, int flags)
1649 const struct devlink_ops *ops = devlink->ops;
1655 err = ops->sb_tc_pool_bind_get(devlink_port, devlink_sb->index,
1656 tc_index, pool_type,
1657 &pool_index, &threshold);
1661 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1665 if (devlink_nl_put_handle(msg, devlink))
1666 goto nla_put_failure;
1667 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
1668 goto nla_put_failure;
1669 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
1670 goto nla_put_failure;
1671 if (nla_put_u16(msg, DEVLINK_ATTR_SB_TC_INDEX, tc_index))
1672 goto nla_put_failure;
1673 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_type))
1674 goto nla_put_failure;
1675 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
1676 goto nla_put_failure;
1677 if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
1678 goto nla_put_failure;
1680 if (ops->sb_occ_tc_port_bind_get) {
1684 err = ops->sb_occ_tc_port_bind_get(devlink_port,
1686 tc_index, pool_type,
1688 if (err && err != -EOPNOTSUPP)
1691 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
1692 goto nla_put_failure;
1693 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
1694 goto nla_put_failure;
1698 genlmsg_end(msg, hdr);
1702 genlmsg_cancel(msg, hdr);
1706 static int devlink_nl_cmd_sb_tc_pool_bind_get_doit(struct sk_buff *skb,
1707 struct genl_info *info)
1709 struct devlink_port *devlink_port = info->user_ptr[1];
1710 struct devlink *devlink = devlink_port->devlink;
1711 struct devlink_sb *devlink_sb;
1712 struct sk_buff *msg;
1713 enum devlink_sb_pool_type pool_type;
1717 devlink_sb = devlink_sb_get_from_info(devlink, info);
1718 if (IS_ERR(devlink_sb))
1719 return PTR_ERR(devlink_sb);
1721 err = devlink_sb_pool_type_get_from_info(info, &pool_type);
1725 err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
1726 pool_type, &tc_index);
1730 if (!devlink->ops->sb_tc_pool_bind_get)
1733 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1737 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink, devlink_port,
1738 devlink_sb, tc_index, pool_type,
1739 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
1747 return genlmsg_reply(msg, info);
1750 static int __sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
1751 int start, int *p_idx,
1752 struct devlink *devlink,
1753 struct devlink_sb *devlink_sb,
1754 u32 portid, u32 seq)
1756 struct devlink_port *devlink_port;
1760 list_for_each_entry(devlink_port, &devlink->port_list, list) {
1762 tc_index < devlink_sb->ingress_tc_count; tc_index++) {
1763 if (*p_idx < start) {
1767 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
1771 DEVLINK_SB_POOL_TYPE_INGRESS,
1772 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
1780 tc_index < devlink_sb->egress_tc_count; tc_index++) {
1781 if (*p_idx < start) {
1785 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
1789 DEVLINK_SB_POOL_TYPE_EGRESS,
1790 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
1802 devlink_nl_cmd_sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
1803 struct netlink_callback *cb)
1805 struct devlink *devlink;
1806 struct devlink_sb *devlink_sb;
1807 int start = cb->args[0];
1811 mutex_lock(&devlink_mutex);
1812 list_for_each_entry(devlink, &devlink_list, list) {
1813 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
1814 !devlink->ops->sb_tc_pool_bind_get)
1817 mutex_lock(&devlink->lock);
1818 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
1819 err = __sb_tc_pool_bind_get_dumpit(msg, start, &idx,
1822 NETLINK_CB(cb->skb).portid,
1823 cb->nlh->nlmsg_seq);
1824 if (err == -EOPNOTSUPP) {
1827 mutex_unlock(&devlink->lock);
1831 mutex_unlock(&devlink->lock);
1834 mutex_unlock(&devlink_mutex);
1836 if (err != -EMSGSIZE)
1843 static int devlink_sb_tc_pool_bind_set(struct devlink_port *devlink_port,
1844 unsigned int sb_index, u16 tc_index,
1845 enum devlink_sb_pool_type pool_type,
1846 u16 pool_index, u32 threshold,
1847 struct netlink_ext_ack *extack)
1850 const struct devlink_ops *ops = devlink_port->devlink->ops;
1852 if (ops->sb_tc_pool_bind_set)
1853 return ops->sb_tc_pool_bind_set(devlink_port, sb_index,
1854 tc_index, pool_type,
1855 pool_index, threshold, extack);
1859 static int devlink_nl_cmd_sb_tc_pool_bind_set_doit(struct sk_buff *skb,
1860 struct genl_info *info)
1862 struct devlink_port *devlink_port = info->user_ptr[1];
1863 struct devlink *devlink = info->user_ptr[0];
1864 enum devlink_sb_pool_type pool_type;
1865 struct devlink_sb *devlink_sb;
1871 devlink_sb = devlink_sb_get_from_info(devlink, info);
1872 if (IS_ERR(devlink_sb))
1873 return PTR_ERR(devlink_sb);
1875 err = devlink_sb_pool_type_get_from_info(info, &pool_type);
1879 err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
1880 pool_type, &tc_index);
1884 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1889 if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD])
1892 threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
1893 return devlink_sb_tc_pool_bind_set(devlink_port, devlink_sb->index,
1894 tc_index, pool_type,
1895 pool_index, threshold, info->extack);
1898 static int devlink_nl_cmd_sb_occ_snapshot_doit(struct sk_buff *skb,
1899 struct genl_info *info)
1901 struct devlink *devlink = info->user_ptr[0];
1902 const struct devlink_ops *ops = devlink->ops;
1903 struct devlink_sb *devlink_sb;
1905 devlink_sb = devlink_sb_get_from_info(devlink, info);
1906 if (IS_ERR(devlink_sb))
1907 return PTR_ERR(devlink_sb);
1909 if (ops->sb_occ_snapshot)
1910 return ops->sb_occ_snapshot(devlink, devlink_sb->index);
1914 static int devlink_nl_cmd_sb_occ_max_clear_doit(struct sk_buff *skb,
1915 struct genl_info *info)
1917 struct devlink *devlink = info->user_ptr[0];
1918 const struct devlink_ops *ops = devlink->ops;
1919 struct devlink_sb *devlink_sb;
1921 devlink_sb = devlink_sb_get_from_info(devlink, info);
1922 if (IS_ERR(devlink_sb))
1923 return PTR_ERR(devlink_sb);
1925 if (ops->sb_occ_max_clear)
1926 return ops->sb_occ_max_clear(devlink, devlink_sb->index);
1930 static int devlink_nl_eswitch_fill(struct sk_buff *msg, struct devlink *devlink,
1931 enum devlink_command cmd, u32 portid,
1934 const struct devlink_ops *ops = devlink->ops;
1935 enum devlink_eswitch_encap_mode encap_mode;
1941 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1945 err = devlink_nl_put_handle(msg, devlink);
1947 goto nla_put_failure;
1949 if (ops->eswitch_mode_get) {
1950 err = ops->eswitch_mode_get(devlink, &mode);
1952 goto nla_put_failure;
1953 err = nla_put_u16(msg, DEVLINK_ATTR_ESWITCH_MODE, mode);
1955 goto nla_put_failure;
1958 if (ops->eswitch_inline_mode_get) {
1959 err = ops->eswitch_inline_mode_get(devlink, &inline_mode);
1961 goto nla_put_failure;
1962 err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_INLINE_MODE,
1965 goto nla_put_failure;
1968 if (ops->eswitch_encap_mode_get) {
1969 err = ops->eswitch_encap_mode_get(devlink, &encap_mode);
1971 goto nla_put_failure;
1972 err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_ENCAP_MODE, encap_mode);
1974 goto nla_put_failure;
1977 genlmsg_end(msg, hdr);
1981 genlmsg_cancel(msg, hdr);
1985 static int devlink_nl_cmd_eswitch_get_doit(struct sk_buff *skb,
1986 struct genl_info *info)
1988 struct devlink *devlink = info->user_ptr[0];
1989 struct sk_buff *msg;
1992 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1996 err = devlink_nl_eswitch_fill(msg, devlink, DEVLINK_CMD_ESWITCH_GET,
1997 info->snd_portid, info->snd_seq, 0);
2004 return genlmsg_reply(msg, info);
2007 static int devlink_nl_cmd_eswitch_set_doit(struct sk_buff *skb,
2008 struct genl_info *info)
2010 struct devlink *devlink = info->user_ptr[0];
2011 const struct devlink_ops *ops = devlink->ops;
2012 enum devlink_eswitch_encap_mode encap_mode;
2017 if (info->attrs[DEVLINK_ATTR_ESWITCH_MODE]) {
2018 if (!ops->eswitch_mode_set)
2020 mode = nla_get_u16(info->attrs[DEVLINK_ATTR_ESWITCH_MODE]);
2021 err = ops->eswitch_mode_set(devlink, mode, info->extack);
2026 if (info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]) {
2027 if (!ops->eswitch_inline_mode_set)
2029 inline_mode = nla_get_u8(
2030 info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]);
2031 err = ops->eswitch_inline_mode_set(devlink, inline_mode,
2037 if (info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]) {
2038 if (!ops->eswitch_encap_mode_set)
2040 encap_mode = nla_get_u8(info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]);
2041 err = ops->eswitch_encap_mode_set(devlink, encap_mode,
2050 int devlink_dpipe_match_put(struct sk_buff *skb,
2051 struct devlink_dpipe_match *match)
2053 struct devlink_dpipe_header *header = match->header;
2054 struct devlink_dpipe_field *field = &header->fields[match->field_id];
2055 struct nlattr *match_attr;
2057 match_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_MATCH);
2061 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_MATCH_TYPE, match->type) ||
2062 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, match->header_index) ||
2063 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
2064 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
2065 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
2066 goto nla_put_failure;
2068 nla_nest_end(skb, match_attr);
2072 nla_nest_cancel(skb, match_attr);
2075 EXPORT_SYMBOL_GPL(devlink_dpipe_match_put);
2077 static int devlink_dpipe_matches_put(struct devlink_dpipe_table *table,
2078 struct sk_buff *skb)
2080 struct nlattr *matches_attr;
2082 matches_attr = nla_nest_start_noflag(skb,
2083 DEVLINK_ATTR_DPIPE_TABLE_MATCHES);
2087 if (table->table_ops->matches_dump(table->priv, skb))
2088 goto nla_put_failure;
2090 nla_nest_end(skb, matches_attr);
2094 nla_nest_cancel(skb, matches_attr);
2098 int devlink_dpipe_action_put(struct sk_buff *skb,
2099 struct devlink_dpipe_action *action)
2101 struct devlink_dpipe_header *header = action->header;
2102 struct devlink_dpipe_field *field = &header->fields[action->field_id];
2103 struct nlattr *action_attr;
2105 action_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ACTION);
2109 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_ACTION_TYPE, action->type) ||
2110 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, action->header_index) ||
2111 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
2112 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
2113 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
2114 goto nla_put_failure;
2116 nla_nest_end(skb, action_attr);
2120 nla_nest_cancel(skb, action_attr);
2123 EXPORT_SYMBOL_GPL(devlink_dpipe_action_put);
2125 static int devlink_dpipe_actions_put(struct devlink_dpipe_table *table,
2126 struct sk_buff *skb)
2128 struct nlattr *actions_attr;
2130 actions_attr = nla_nest_start_noflag(skb,
2131 DEVLINK_ATTR_DPIPE_TABLE_ACTIONS);
2135 if (table->table_ops->actions_dump(table->priv, skb))
2136 goto nla_put_failure;
2138 nla_nest_end(skb, actions_attr);
2142 nla_nest_cancel(skb, actions_attr);
2146 static int devlink_dpipe_table_put(struct sk_buff *skb,
2147 struct devlink_dpipe_table *table)
2149 struct nlattr *table_attr;
2152 table_size = table->table_ops->size_get(table->priv);
2153 table_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLE);
2157 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_TABLE_NAME, table->name) ||
2158 nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_SIZE, table_size,
2160 goto nla_put_failure;
2161 if (nla_put_u8(skb, DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED,
2162 table->counters_enabled))
2163 goto nla_put_failure;
2165 if (table->resource_valid) {
2166 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_ID,
2167 table->resource_id, DEVLINK_ATTR_PAD) ||
2168 nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_UNITS,
2169 table->resource_units, DEVLINK_ATTR_PAD))
2170 goto nla_put_failure;
2172 if (devlink_dpipe_matches_put(table, skb))
2173 goto nla_put_failure;
2175 if (devlink_dpipe_actions_put(table, skb))
2176 goto nla_put_failure;
2178 nla_nest_end(skb, table_attr);
2182 nla_nest_cancel(skb, table_attr);
2186 static int devlink_dpipe_send_and_alloc_skb(struct sk_buff **pskb,
2187 struct genl_info *info)
2192 err = genlmsg_reply(*pskb, info);
2196 *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2202 static int devlink_dpipe_tables_fill(struct genl_info *info,
2203 enum devlink_command cmd, int flags,
2204 struct list_head *dpipe_tables,
2205 const char *table_name)
2207 struct devlink *devlink = info->user_ptr[0];
2208 struct devlink_dpipe_table *table;
2209 struct nlattr *tables_attr;
2210 struct sk_buff *skb = NULL;
2211 struct nlmsghdr *nlh;
2217 table = list_first_entry(dpipe_tables,
2218 struct devlink_dpipe_table, list);
2220 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2224 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
2225 &devlink_nl_family, NLM_F_MULTI, cmd);
2231 if (devlink_nl_put_handle(skb, devlink))
2232 goto nla_put_failure;
2233 tables_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLES);
2235 goto nla_put_failure;
2239 list_for_each_entry_from(table, dpipe_tables, list) {
2241 err = devlink_dpipe_table_put(skb, table);
2249 if (!strcmp(table->name, table_name)) {
2250 err = devlink_dpipe_table_put(skb, table);
2258 nla_nest_end(skb, tables_attr);
2259 genlmsg_end(skb, hdr);
2264 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
2265 NLMSG_DONE, 0, flags | NLM_F_MULTI);
2267 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2273 return genlmsg_reply(skb, info);
2282 static int devlink_nl_cmd_dpipe_table_get(struct sk_buff *skb,
2283 struct genl_info *info)
2285 struct devlink *devlink = info->user_ptr[0];
2286 const char *table_name = NULL;
2288 if (info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
2289 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
2291 return devlink_dpipe_tables_fill(info, DEVLINK_CMD_DPIPE_TABLE_GET, 0,
2292 &devlink->dpipe_table_list,
2296 static int devlink_dpipe_value_put(struct sk_buff *skb,
2297 struct devlink_dpipe_value *value)
2299 if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE,
2300 value->value_size, value->value))
2303 if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE_MASK,
2304 value->value_size, value->mask))
2306 if (value->mapping_valid)
2307 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_VALUE_MAPPING,
2308 value->mapping_value))
2313 static int devlink_dpipe_action_value_put(struct sk_buff *skb,
2314 struct devlink_dpipe_value *value)
2318 if (devlink_dpipe_action_put(skb, value->action))
2320 if (devlink_dpipe_value_put(skb, value))
2325 static int devlink_dpipe_action_values_put(struct sk_buff *skb,
2326 struct devlink_dpipe_value *values,
2327 unsigned int values_count)
2329 struct nlattr *action_attr;
2333 for (i = 0; i < values_count; i++) {
2334 action_attr = nla_nest_start_noflag(skb,
2335 DEVLINK_ATTR_DPIPE_ACTION_VALUE);
2338 err = devlink_dpipe_action_value_put(skb, &values[i]);
2340 goto err_action_value_put;
2341 nla_nest_end(skb, action_attr);
2345 err_action_value_put:
2346 nla_nest_cancel(skb, action_attr);
2350 static int devlink_dpipe_match_value_put(struct sk_buff *skb,
2351 struct devlink_dpipe_value *value)
2355 if (devlink_dpipe_match_put(skb, value->match))
2357 if (devlink_dpipe_value_put(skb, value))
2362 static int devlink_dpipe_match_values_put(struct sk_buff *skb,
2363 struct devlink_dpipe_value *values,
2364 unsigned int values_count)
2366 struct nlattr *match_attr;
2370 for (i = 0; i < values_count; i++) {
2371 match_attr = nla_nest_start_noflag(skb,
2372 DEVLINK_ATTR_DPIPE_MATCH_VALUE);
2375 err = devlink_dpipe_match_value_put(skb, &values[i]);
2377 goto err_match_value_put;
2378 nla_nest_end(skb, match_attr);
2382 err_match_value_put:
2383 nla_nest_cancel(skb, match_attr);
2387 static int devlink_dpipe_entry_put(struct sk_buff *skb,
2388 struct devlink_dpipe_entry *entry)
2390 struct nlattr *entry_attr, *matches_attr, *actions_attr;
2393 entry_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ENTRY);
2397 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_INDEX, entry->index,
2399 goto nla_put_failure;
2400 if (entry->counter_valid)
2401 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_COUNTER,
2402 entry->counter, DEVLINK_ATTR_PAD))
2403 goto nla_put_failure;
2405 matches_attr = nla_nest_start_noflag(skb,
2406 DEVLINK_ATTR_DPIPE_ENTRY_MATCH_VALUES);
2408 goto nla_put_failure;
2410 err = devlink_dpipe_match_values_put(skb, entry->match_values,
2411 entry->match_values_count);
2413 nla_nest_cancel(skb, matches_attr);
2414 goto err_match_values_put;
2416 nla_nest_end(skb, matches_attr);
2418 actions_attr = nla_nest_start_noflag(skb,
2419 DEVLINK_ATTR_DPIPE_ENTRY_ACTION_VALUES);
2421 goto nla_put_failure;
2423 err = devlink_dpipe_action_values_put(skb, entry->action_values,
2424 entry->action_values_count);
2426 nla_nest_cancel(skb, actions_attr);
2427 goto err_action_values_put;
2429 nla_nest_end(skb, actions_attr);
2431 nla_nest_end(skb, entry_attr);
2436 err_match_values_put:
2437 err_action_values_put:
2438 nla_nest_cancel(skb, entry_attr);
2442 static struct devlink_dpipe_table *
2443 devlink_dpipe_table_find(struct list_head *dpipe_tables,
2444 const char *table_name, struct devlink *devlink)
2446 struct devlink_dpipe_table *table;
2447 list_for_each_entry_rcu(table, dpipe_tables, list,
2448 lockdep_is_held(&devlink->lock)) {
2449 if (!strcmp(table->name, table_name))
2455 int devlink_dpipe_entry_ctx_prepare(struct devlink_dpipe_dump_ctx *dump_ctx)
2457 struct devlink *devlink;
2460 err = devlink_dpipe_send_and_alloc_skb(&dump_ctx->skb,
2465 dump_ctx->hdr = genlmsg_put(dump_ctx->skb,
2466 dump_ctx->info->snd_portid,
2467 dump_ctx->info->snd_seq,
2468 &devlink_nl_family, NLM_F_MULTI,
2471 goto nla_put_failure;
2473 devlink = dump_ctx->info->user_ptr[0];
2474 if (devlink_nl_put_handle(dump_ctx->skb, devlink))
2475 goto nla_put_failure;
2476 dump_ctx->nest = nla_nest_start_noflag(dump_ctx->skb,
2477 DEVLINK_ATTR_DPIPE_ENTRIES);
2478 if (!dump_ctx->nest)
2479 goto nla_put_failure;
2483 nlmsg_free(dump_ctx->skb);
2486 EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_prepare);
2488 int devlink_dpipe_entry_ctx_append(struct devlink_dpipe_dump_ctx *dump_ctx,
2489 struct devlink_dpipe_entry *entry)
2491 return devlink_dpipe_entry_put(dump_ctx->skb, entry);
2493 EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_append);
2495 int devlink_dpipe_entry_ctx_close(struct devlink_dpipe_dump_ctx *dump_ctx)
2497 nla_nest_end(dump_ctx->skb, dump_ctx->nest);
2498 genlmsg_end(dump_ctx->skb, dump_ctx->hdr);
2501 EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_close);
2503 void devlink_dpipe_entry_clear(struct devlink_dpipe_entry *entry)
2506 unsigned int value_count, value_index;
2507 struct devlink_dpipe_value *value;
2509 value = entry->action_values;
2510 value_count = entry->action_values_count;
2511 for (value_index = 0; value_index < value_count; value_index++) {
2512 kfree(value[value_index].value);
2513 kfree(value[value_index].mask);
2516 value = entry->match_values;
2517 value_count = entry->match_values_count;
2518 for (value_index = 0; value_index < value_count; value_index++) {
2519 kfree(value[value_index].value);
2520 kfree(value[value_index].mask);
2523 EXPORT_SYMBOL(devlink_dpipe_entry_clear);
2525 static int devlink_dpipe_entries_fill(struct genl_info *info,
2526 enum devlink_command cmd, int flags,
2527 struct devlink_dpipe_table *table)
2529 struct devlink_dpipe_dump_ctx dump_ctx;
2530 struct nlmsghdr *nlh;
2533 dump_ctx.skb = NULL;
2535 dump_ctx.info = info;
2537 err = table->table_ops->entries_dump(table->priv,
2538 table->counters_enabled,
2544 nlh = nlmsg_put(dump_ctx.skb, info->snd_portid, info->snd_seq,
2545 NLMSG_DONE, 0, flags | NLM_F_MULTI);
2547 err = devlink_dpipe_send_and_alloc_skb(&dump_ctx.skb, info);
2552 return genlmsg_reply(dump_ctx.skb, info);
2555 static int devlink_nl_cmd_dpipe_entries_get(struct sk_buff *skb,
2556 struct genl_info *info)
2558 struct devlink *devlink = info->user_ptr[0];
2559 struct devlink_dpipe_table *table;
2560 const char *table_name;
2562 if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
2565 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
2566 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2567 table_name, devlink);
2571 if (!table->table_ops->entries_dump)
2574 return devlink_dpipe_entries_fill(info, DEVLINK_CMD_DPIPE_ENTRIES_GET,
2578 static int devlink_dpipe_fields_put(struct sk_buff *skb,
2579 const struct devlink_dpipe_header *header)
2581 struct devlink_dpipe_field *field;
2582 struct nlattr *field_attr;
2585 for (i = 0; i < header->fields_count; i++) {
2586 field = &header->fields[i];
2587 field_attr = nla_nest_start_noflag(skb,
2588 DEVLINK_ATTR_DPIPE_FIELD);
2591 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_FIELD_NAME, field->name) ||
2592 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
2593 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_BITWIDTH, field->bitwidth) ||
2594 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_MAPPING_TYPE, field->mapping_type))
2595 goto nla_put_failure;
2596 nla_nest_end(skb, field_attr);
2601 nla_nest_cancel(skb, field_attr);
2605 static int devlink_dpipe_header_put(struct sk_buff *skb,
2606 struct devlink_dpipe_header *header)
2608 struct nlattr *fields_attr, *header_attr;
2611 header_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADER);
2615 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_HEADER_NAME, header->name) ||
2616 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
2617 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
2618 goto nla_put_failure;
2620 fields_attr = nla_nest_start_noflag(skb,
2621 DEVLINK_ATTR_DPIPE_HEADER_FIELDS);
2623 goto nla_put_failure;
2625 err = devlink_dpipe_fields_put(skb, header);
2627 nla_nest_cancel(skb, fields_attr);
2628 goto nla_put_failure;
2630 nla_nest_end(skb, fields_attr);
2631 nla_nest_end(skb, header_attr);
2636 nla_nest_cancel(skb, header_attr);
2640 static int devlink_dpipe_headers_fill(struct genl_info *info,
2641 enum devlink_command cmd, int flags,
2642 struct devlink_dpipe_headers *
2645 struct devlink *devlink = info->user_ptr[0];
2646 struct nlattr *headers_attr;
2647 struct sk_buff *skb = NULL;
2648 struct nlmsghdr *nlh;
2655 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2659 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
2660 &devlink_nl_family, NLM_F_MULTI, cmd);
2666 if (devlink_nl_put_handle(skb, devlink))
2667 goto nla_put_failure;
2668 headers_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADERS);
2670 goto nla_put_failure;
2673 for (; i < dpipe_headers->headers_count; i++) {
2674 err = devlink_dpipe_header_put(skb, dpipe_headers->headers[i]);
2682 nla_nest_end(skb, headers_attr);
2683 genlmsg_end(skb, hdr);
2684 if (i != dpipe_headers->headers_count)
2688 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
2689 NLMSG_DONE, 0, flags | NLM_F_MULTI);
2691 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2696 return genlmsg_reply(skb, info);
2705 static int devlink_nl_cmd_dpipe_headers_get(struct sk_buff *skb,
2706 struct genl_info *info)
2708 struct devlink *devlink = info->user_ptr[0];
2710 if (!devlink->dpipe_headers)
2712 return devlink_dpipe_headers_fill(info, DEVLINK_CMD_DPIPE_HEADERS_GET,
2713 0, devlink->dpipe_headers);
2716 static int devlink_dpipe_table_counters_set(struct devlink *devlink,
2717 const char *table_name,
2720 struct devlink_dpipe_table *table;
2722 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2723 table_name, devlink);
2727 if (table->counter_control_extern)
2730 if (!(table->counters_enabled ^ enable))
2733 table->counters_enabled = enable;
2734 if (table->table_ops->counters_set_update)
2735 table->table_ops->counters_set_update(table->priv, enable);
2739 static int devlink_nl_cmd_dpipe_table_counters_set(struct sk_buff *skb,
2740 struct genl_info *info)
2742 struct devlink *devlink = info->user_ptr[0];
2743 const char *table_name;
2744 bool counters_enable;
2746 if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME] ||
2747 !info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED])
2750 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
2751 counters_enable = !!nla_get_u8(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED]);
2753 return devlink_dpipe_table_counters_set(devlink, table_name,
2757 static struct devlink_resource *
2758 devlink_resource_find(struct devlink *devlink,
2759 struct devlink_resource *resource, u64 resource_id)
2761 struct list_head *resource_list;
2764 resource_list = &resource->resource_list;
2766 resource_list = &devlink->resource_list;
2768 list_for_each_entry(resource, resource_list, list) {
2769 struct devlink_resource *child_resource;
2771 if (resource->id == resource_id)
2774 child_resource = devlink_resource_find(devlink, resource,
2777 return child_resource;
2783 devlink_resource_validate_children(struct devlink_resource *resource)
2785 struct devlink_resource *child_resource;
2786 bool size_valid = true;
2789 if (list_empty(&resource->resource_list))
2792 list_for_each_entry(child_resource, &resource->resource_list, list)
2793 parts_size += child_resource->size_new;
2795 if (parts_size > resource->size_new)
2798 resource->size_valid = size_valid;
2802 devlink_resource_validate_size(struct devlink_resource *resource, u64 size,
2803 struct netlink_ext_ack *extack)
2808 if (size > resource->size_params.size_max) {
2809 NL_SET_ERR_MSG_MOD(extack, "Size larger than maximum");
2813 if (size < resource->size_params.size_min) {
2814 NL_SET_ERR_MSG_MOD(extack, "Size smaller than minimum");
2818 div64_u64_rem(size, resource->size_params.size_granularity, &reminder);
2820 NL_SET_ERR_MSG_MOD(extack, "Wrong granularity");
2827 static int devlink_nl_cmd_resource_set(struct sk_buff *skb,
2828 struct genl_info *info)
2830 struct devlink *devlink = info->user_ptr[0];
2831 struct devlink_resource *resource;
2836 if (!info->attrs[DEVLINK_ATTR_RESOURCE_ID] ||
2837 !info->attrs[DEVLINK_ATTR_RESOURCE_SIZE])
2839 resource_id = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_ID]);
2841 resource = devlink_resource_find(devlink, NULL, resource_id);
2845 size = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_SIZE]);
2846 err = devlink_resource_validate_size(resource, size, info->extack);
2850 resource->size_new = size;
2851 devlink_resource_validate_children(resource);
2852 if (resource->parent)
2853 devlink_resource_validate_children(resource->parent);
2858 devlink_resource_size_params_put(struct devlink_resource *resource,
2859 struct sk_buff *skb)
2861 struct devlink_resource_size_params *size_params;
2863 size_params = &resource->size_params;
2864 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_GRAN,
2865 size_params->size_granularity, DEVLINK_ATTR_PAD) ||
2866 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MAX,
2867 size_params->size_max, DEVLINK_ATTR_PAD) ||
2868 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MIN,
2869 size_params->size_min, DEVLINK_ATTR_PAD) ||
2870 nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_UNIT, size_params->unit))
2875 static int devlink_resource_occ_put(struct devlink_resource *resource,
2876 struct sk_buff *skb)
2878 if (!resource->occ_get)
2880 return nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_OCC,
2881 resource->occ_get(resource->occ_get_priv),
2885 static int devlink_resource_put(struct devlink *devlink, struct sk_buff *skb,
2886 struct devlink_resource *resource)
2888 struct devlink_resource *child_resource;
2889 struct nlattr *child_resource_attr;
2890 struct nlattr *resource_attr;
2892 resource_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_RESOURCE);
2896 if (nla_put_string(skb, DEVLINK_ATTR_RESOURCE_NAME, resource->name) ||
2897 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE, resource->size,
2898 DEVLINK_ATTR_PAD) ||
2899 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_ID, resource->id,
2901 goto nla_put_failure;
2902 if (resource->size != resource->size_new)
2903 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_NEW,
2904 resource->size_new, DEVLINK_ATTR_PAD);
2905 if (devlink_resource_occ_put(resource, skb))
2906 goto nla_put_failure;
2907 if (devlink_resource_size_params_put(resource, skb))
2908 goto nla_put_failure;
2909 if (list_empty(&resource->resource_list))
2912 if (nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_SIZE_VALID,
2913 resource->size_valid))
2914 goto nla_put_failure;
2916 child_resource_attr = nla_nest_start_noflag(skb,
2917 DEVLINK_ATTR_RESOURCE_LIST);
2918 if (!child_resource_attr)
2919 goto nla_put_failure;
2921 list_for_each_entry(child_resource, &resource->resource_list, list) {
2922 if (devlink_resource_put(devlink, skb, child_resource))
2923 goto resource_put_failure;
2926 nla_nest_end(skb, child_resource_attr);
2928 nla_nest_end(skb, resource_attr);
2931 resource_put_failure:
2932 nla_nest_cancel(skb, child_resource_attr);
2934 nla_nest_cancel(skb, resource_attr);
2938 static int devlink_resource_fill(struct genl_info *info,
2939 enum devlink_command cmd, int flags)
2941 struct devlink *devlink = info->user_ptr[0];
2942 struct devlink_resource *resource;
2943 struct nlattr *resources_attr;
2944 struct sk_buff *skb = NULL;
2945 struct nlmsghdr *nlh;
2951 resource = list_first_entry(&devlink->resource_list,
2952 struct devlink_resource, list);
2954 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2958 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
2959 &devlink_nl_family, NLM_F_MULTI, cmd);
2965 if (devlink_nl_put_handle(skb, devlink))
2966 goto nla_put_failure;
2968 resources_attr = nla_nest_start_noflag(skb,
2969 DEVLINK_ATTR_RESOURCE_LIST);
2970 if (!resources_attr)
2971 goto nla_put_failure;
2975 list_for_each_entry_from(resource, &devlink->resource_list, list) {
2976 err = devlink_resource_put(devlink, skb, resource);
2979 goto err_resource_put;
2985 nla_nest_end(skb, resources_attr);
2986 genlmsg_end(skb, hdr);
2990 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
2991 NLMSG_DONE, 0, flags | NLM_F_MULTI);
2993 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2998 return genlmsg_reply(skb, info);
3007 static int devlink_nl_cmd_resource_dump(struct sk_buff *skb,
3008 struct genl_info *info)
3010 struct devlink *devlink = info->user_ptr[0];
3012 if (list_empty(&devlink->resource_list))
3015 return devlink_resource_fill(info, DEVLINK_CMD_RESOURCE_DUMP, 0);
3019 devlink_resources_validate(struct devlink *devlink,
3020 struct devlink_resource *resource,
3021 struct genl_info *info)
3023 struct list_head *resource_list;
3027 resource_list = &resource->resource_list;
3029 resource_list = &devlink->resource_list;
3031 list_for_each_entry(resource, resource_list, list) {
3032 if (!resource->size_valid)
3034 err = devlink_resources_validate(devlink, resource, info);
3041 static struct net *devlink_netns_get(struct sk_buff *skb,
3042 struct genl_info *info)
3044 struct nlattr *netns_pid_attr = info->attrs[DEVLINK_ATTR_NETNS_PID];
3045 struct nlattr *netns_fd_attr = info->attrs[DEVLINK_ATTR_NETNS_FD];
3046 struct nlattr *netns_id_attr = info->attrs[DEVLINK_ATTR_NETNS_ID];
3049 if (!!netns_pid_attr + !!netns_fd_attr + !!netns_id_attr > 1) {
3050 NL_SET_ERR_MSG_MOD(info->extack, "multiple netns identifying attributes specified");
3051 return ERR_PTR(-EINVAL);
3054 if (netns_pid_attr) {
3055 net = get_net_ns_by_pid(nla_get_u32(netns_pid_attr));
3056 } else if (netns_fd_attr) {
3057 net = get_net_ns_by_fd(nla_get_u32(netns_fd_attr));
3058 } else if (netns_id_attr) {
3059 net = get_net_ns_by_id(sock_net(skb->sk),
3060 nla_get_u32(netns_id_attr));
3062 net = ERR_PTR(-EINVAL);
3065 net = ERR_PTR(-EINVAL);
3068 NL_SET_ERR_MSG_MOD(info->extack, "Unknown network namespace");
3069 return ERR_PTR(-EINVAL);
3071 if (!netlink_ns_capable(skb, net->user_ns, CAP_NET_ADMIN)) {
3073 return ERR_PTR(-EPERM);
3078 static void devlink_param_notify(struct devlink *devlink,
3079 unsigned int port_index,
3080 struct devlink_param_item *param_item,
3081 enum devlink_command cmd);
3083 static void devlink_reload_netns_change(struct devlink *devlink,
3084 struct net *dest_net)
3086 struct devlink_param_item *param_item;
3088 /* Userspace needs to be notified about devlink objects
3089 * removed from original and entering new network namespace.
3090 * The rest of the devlink objects are re-created during
3091 * reload process so the notifications are generated separatelly.
3094 list_for_each_entry(param_item, &devlink->param_list, list)
3095 devlink_param_notify(devlink, 0, param_item,
3096 DEVLINK_CMD_PARAM_DEL);
3097 devlink_notify(devlink, DEVLINK_CMD_DEL);
3099 __devlink_net_set(devlink, dest_net);
3101 devlink_notify(devlink, DEVLINK_CMD_NEW);
3102 list_for_each_entry(param_item, &devlink->param_list, list)
3103 devlink_param_notify(devlink, 0, param_item,
3104 DEVLINK_CMD_PARAM_NEW);
3107 static bool devlink_reload_supported(const struct devlink_ops *ops)
3109 return ops->reload_down && ops->reload_up;
3112 static void devlink_reload_failed_set(struct devlink *devlink,
3115 if (devlink->reload_failed == reload_failed)
3117 devlink->reload_failed = reload_failed;
3118 devlink_notify(devlink, DEVLINK_CMD_NEW);
3121 bool devlink_is_reload_failed(const struct devlink *devlink)
3123 return devlink->reload_failed;
3125 EXPORT_SYMBOL_GPL(devlink_is_reload_failed);
3128 __devlink_reload_stats_update(struct devlink *devlink, u32 *reload_stats,
3129 enum devlink_reload_limit limit, u32 actions_performed)
3131 unsigned long actions = actions_performed;
3135 for_each_set_bit(action, &actions, __DEVLINK_RELOAD_ACTION_MAX) {
3136 stat_idx = limit * __DEVLINK_RELOAD_ACTION_MAX + action;
3137 reload_stats[stat_idx]++;
3139 devlink_notify(devlink, DEVLINK_CMD_NEW);
3143 devlink_reload_stats_update(struct devlink *devlink, enum devlink_reload_limit limit,
3144 u32 actions_performed)
3146 __devlink_reload_stats_update(devlink, devlink->stats.reload_stats, limit,
3151 * devlink_remote_reload_actions_performed - Update devlink on reload actions
3152 * performed which are not a direct result of devlink reload call.
3154 * This should be called by a driver after performing reload actions in case it was not
3155 * a result of devlink reload call. For example fw_activate was performed as a result
3156 * of devlink reload triggered fw_activate on another host.
3157 * The motivation for this function is to keep data on reload actions performed on this
3158 * function whether it was done due to direct devlink reload call or not.
3161 * @limit: reload limit
3162 * @actions_performed: bitmask of actions performed
3164 void devlink_remote_reload_actions_performed(struct devlink *devlink,
3165 enum devlink_reload_limit limit,
3166 u32 actions_performed)
3168 if (WARN_ON(!actions_performed ||
3169 actions_performed & BIT(DEVLINK_RELOAD_ACTION_UNSPEC) ||
3170 actions_performed >= BIT(__DEVLINK_RELOAD_ACTION_MAX) ||
3171 limit > DEVLINK_RELOAD_LIMIT_MAX))
3174 __devlink_reload_stats_update(devlink, devlink->stats.remote_reload_stats, limit,
3177 EXPORT_SYMBOL_GPL(devlink_remote_reload_actions_performed);
3179 static int devlink_reload(struct devlink *devlink, struct net *dest_net,
3180 enum devlink_reload_action action, enum devlink_reload_limit limit,
3181 u32 *actions_performed, struct netlink_ext_ack *extack)
3183 u32 remote_reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE];
3186 if (!devlink->reload_enabled)
3189 memcpy(remote_reload_stats, devlink->stats.remote_reload_stats,
3190 sizeof(remote_reload_stats));
3191 err = devlink->ops->reload_down(devlink, !!dest_net, action, limit, extack);
3195 if (dest_net && !net_eq(dest_net, devlink_net(devlink)))
3196 devlink_reload_netns_change(devlink, dest_net);
3198 err = devlink->ops->reload_up(devlink, action, limit, actions_performed, extack);
3199 devlink_reload_failed_set(devlink, !!err);
3203 WARN_ON(!(*actions_performed & BIT(action)));
3204 /* Catch driver on updating the remote action within devlink reload */
3205 WARN_ON(memcmp(remote_reload_stats, devlink->stats.remote_reload_stats,
3206 sizeof(remote_reload_stats)));
3207 devlink_reload_stats_update(devlink, limit, *actions_performed);
3212 devlink_nl_reload_actions_performed_snd(struct devlink *devlink, u32 actions_performed,
3213 enum devlink_command cmd, struct genl_info *info)
3215 struct sk_buff *msg;
3218 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3222 hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq, &devlink_nl_family, 0, cmd);
3226 if (devlink_nl_put_handle(msg, devlink))
3227 goto nla_put_failure;
3229 if (nla_put_bitfield32(msg, DEVLINK_ATTR_RELOAD_ACTIONS_PERFORMED, actions_performed,
3231 goto nla_put_failure;
3232 genlmsg_end(msg, hdr);
3234 return genlmsg_reply(msg, info);
3237 genlmsg_cancel(msg, hdr);
3243 static int devlink_nl_cmd_reload(struct sk_buff *skb, struct genl_info *info)
3245 struct devlink *devlink = info->user_ptr[0];
3246 enum devlink_reload_action action;
3247 enum devlink_reload_limit limit;
3248 struct net *dest_net = NULL;
3249 u32 actions_performed;
3252 if (!devlink_reload_supported(devlink->ops))
3255 err = devlink_resources_validate(devlink, NULL, info);
3257 NL_SET_ERR_MSG_MOD(info->extack, "resources size validation failed");
3261 if (info->attrs[DEVLINK_ATTR_NETNS_PID] ||
3262 info->attrs[DEVLINK_ATTR_NETNS_FD] ||
3263 info->attrs[DEVLINK_ATTR_NETNS_ID]) {
3264 dest_net = devlink_netns_get(skb, info);
3265 if (IS_ERR(dest_net))
3266 return PTR_ERR(dest_net);
3269 if (info->attrs[DEVLINK_ATTR_RELOAD_ACTION])
3270 action = nla_get_u8(info->attrs[DEVLINK_ATTR_RELOAD_ACTION]);
3272 action = DEVLINK_RELOAD_ACTION_DRIVER_REINIT;
3274 if (!devlink_reload_action_is_supported(devlink, action)) {
3275 NL_SET_ERR_MSG_MOD(info->extack,
3276 "Requested reload action is not supported by the driver");
3280 limit = DEVLINK_RELOAD_LIMIT_UNSPEC;
3281 if (info->attrs[DEVLINK_ATTR_RELOAD_LIMITS]) {
3282 struct nla_bitfield32 limits;
3283 u32 limits_selected;
3285 limits = nla_get_bitfield32(info->attrs[DEVLINK_ATTR_RELOAD_LIMITS]);
3286 limits_selected = limits.value & limits.selector;
3287 if (!limits_selected) {
3288 NL_SET_ERR_MSG_MOD(info->extack, "Invalid limit selected");
3291 for (limit = 0 ; limit <= DEVLINK_RELOAD_LIMIT_MAX ; limit++)
3292 if (limits_selected & BIT(limit))
3294 /* UAPI enables multiselection, but currently it is not used */
3295 if (limits_selected != BIT(limit)) {
3296 NL_SET_ERR_MSG_MOD(info->extack,
3297 "Multiselection of limit is not supported");
3300 if (!devlink_reload_limit_is_supported(devlink, limit)) {
3301 NL_SET_ERR_MSG_MOD(info->extack,
3302 "Requested limit is not supported by the driver");
3305 if (devlink_reload_combination_is_invalid(action, limit)) {
3306 NL_SET_ERR_MSG_MOD(info->extack,
3307 "Requested limit is invalid for this action");
3311 err = devlink_reload(devlink, dest_net, action, limit, &actions_performed, info->extack);
3318 /* For backward compatibility generate reply only if attributes used by user */
3319 if (!info->attrs[DEVLINK_ATTR_RELOAD_ACTION] && !info->attrs[DEVLINK_ATTR_RELOAD_LIMITS])
3322 return devlink_nl_reload_actions_performed_snd(devlink, actions_performed,
3323 DEVLINK_CMD_RELOAD, info);
3326 static int devlink_nl_flash_update_fill(struct sk_buff *msg,
3327 struct devlink *devlink,
3328 enum devlink_command cmd,
3329 struct devlink_flash_notify *params)
3333 hdr = genlmsg_put(msg, 0, 0, &devlink_nl_family, 0, cmd);
3337 if (devlink_nl_put_handle(msg, devlink))
3338 goto nla_put_failure;
3340 if (cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS)
3343 if (params->status_msg &&
3344 nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_MSG,
3345 params->status_msg))
3346 goto nla_put_failure;
3347 if (params->component &&
3348 nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_COMPONENT,
3350 goto nla_put_failure;
3351 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_DONE,
3352 params->done, DEVLINK_ATTR_PAD))
3353 goto nla_put_failure;
3354 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TOTAL,
3355 params->total, DEVLINK_ATTR_PAD))
3356 goto nla_put_failure;
3357 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TIMEOUT,
3358 params->timeout, DEVLINK_ATTR_PAD))
3359 goto nla_put_failure;
3362 genlmsg_end(msg, hdr);
3366 genlmsg_cancel(msg, hdr);
3370 static void __devlink_flash_update_notify(struct devlink *devlink,
3371 enum devlink_command cmd,
3372 struct devlink_flash_notify *params)
3374 struct sk_buff *msg;
3377 WARN_ON(cmd != DEVLINK_CMD_FLASH_UPDATE &&
3378 cmd != DEVLINK_CMD_FLASH_UPDATE_END &&
3379 cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS);
3381 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3385 err = devlink_nl_flash_update_fill(msg, devlink, cmd, params);
3389 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
3390 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
3397 void devlink_flash_update_begin_notify(struct devlink *devlink)
3399 struct devlink_flash_notify params = { 0 };
3401 __devlink_flash_update_notify(devlink,
3402 DEVLINK_CMD_FLASH_UPDATE,
3405 EXPORT_SYMBOL_GPL(devlink_flash_update_begin_notify);
3407 void devlink_flash_update_end_notify(struct devlink *devlink)
3409 struct devlink_flash_notify params = { 0 };
3411 __devlink_flash_update_notify(devlink,
3412 DEVLINK_CMD_FLASH_UPDATE_END,
3415 EXPORT_SYMBOL_GPL(devlink_flash_update_end_notify);
3417 void devlink_flash_update_status_notify(struct devlink *devlink,
3418 const char *status_msg,
3419 const char *component,
3421 unsigned long total)
3423 struct devlink_flash_notify params = {
3424 .status_msg = status_msg,
3425 .component = component,
3430 __devlink_flash_update_notify(devlink,
3431 DEVLINK_CMD_FLASH_UPDATE_STATUS,
3434 EXPORT_SYMBOL_GPL(devlink_flash_update_status_notify);
3436 void devlink_flash_update_timeout_notify(struct devlink *devlink,
3437 const char *status_msg,
3438 const char *component,
3439 unsigned long timeout)
3441 struct devlink_flash_notify params = {
3442 .status_msg = status_msg,
3443 .component = component,
3447 __devlink_flash_update_notify(devlink,
3448 DEVLINK_CMD_FLASH_UPDATE_STATUS,
3451 EXPORT_SYMBOL_GPL(devlink_flash_update_timeout_notify);
3453 static int devlink_nl_cmd_flash_update(struct sk_buff *skb,
3454 struct genl_info *info)
3456 struct nlattr *nla_component, *nla_overwrite_mask;
3457 struct devlink_flash_update_params params = {};
3458 struct devlink *devlink = info->user_ptr[0];
3459 u32 supported_params;
3461 if (!devlink->ops->flash_update)
3464 if (!info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME])
3467 supported_params = devlink->ops->supported_flash_update_params;
3469 params.file_name = nla_data(info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME]);
3471 nla_component = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_COMPONENT];
3472 if (nla_component) {
3473 if (!(supported_params & DEVLINK_SUPPORT_FLASH_UPDATE_COMPONENT)) {
3474 NL_SET_ERR_MSG_ATTR(info->extack, nla_component,
3475 "component update is not supported by this device");
3478 params.component = nla_data(nla_component);
3481 nla_overwrite_mask = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_OVERWRITE_MASK];
3482 if (nla_overwrite_mask) {
3483 struct nla_bitfield32 sections;
3485 if (!(supported_params & DEVLINK_SUPPORT_FLASH_UPDATE_OVERWRITE_MASK)) {
3486 NL_SET_ERR_MSG_ATTR(info->extack, nla_overwrite_mask,
3487 "overwrite settings are not supported by this device");
3490 sections = nla_get_bitfield32(nla_overwrite_mask);
3491 params.overwrite_mask = sections.value & sections.selector;
3494 return devlink->ops->flash_update(devlink, ¶ms, info->extack);
3497 static const struct devlink_param devlink_param_generic[] = {
3499 .id = DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET,
3500 .name = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_NAME,
3501 .type = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_TYPE,
3504 .id = DEVLINK_PARAM_GENERIC_ID_MAX_MACS,
3505 .name = DEVLINK_PARAM_GENERIC_MAX_MACS_NAME,
3506 .type = DEVLINK_PARAM_GENERIC_MAX_MACS_TYPE,
3509 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_SRIOV,
3510 .name = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_NAME,
3511 .type = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_TYPE,
3514 .id = DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT,
3515 .name = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_NAME,
3516 .type = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_TYPE,
3519 .id = DEVLINK_PARAM_GENERIC_ID_IGNORE_ARI,
3520 .name = DEVLINK_PARAM_GENERIC_IGNORE_ARI_NAME,
3521 .type = DEVLINK_PARAM_GENERIC_IGNORE_ARI_TYPE,
3524 .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX,
3525 .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_NAME,
3526 .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_TYPE,
3529 .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN,
3530 .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_NAME,
3531 .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_TYPE,
3534 .id = DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY,
3535 .name = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_NAME,
3536 .type = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_TYPE,
3539 .id = DEVLINK_PARAM_GENERIC_ID_RESET_DEV_ON_DRV_PROBE,
3540 .name = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_NAME,
3541 .type = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_TYPE,
3544 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_ROCE,
3545 .name = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_NAME,
3546 .type = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_TYPE,
3549 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_REMOTE_DEV_RESET,
3550 .name = DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_NAME,
3551 .type = DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_TYPE,
3555 static int devlink_param_generic_verify(const struct devlink_param *param)
3557 /* verify it match generic parameter by id and name */
3558 if (param->id > DEVLINK_PARAM_GENERIC_ID_MAX)
3560 if (strcmp(param->name, devlink_param_generic[param->id].name))
3563 WARN_ON(param->type != devlink_param_generic[param->id].type);
3568 static int devlink_param_driver_verify(const struct devlink_param *param)
3572 if (param->id <= DEVLINK_PARAM_GENERIC_ID_MAX)
3574 /* verify no such name in generic params */
3575 for (i = 0; i <= DEVLINK_PARAM_GENERIC_ID_MAX; i++)
3576 if (!strcmp(param->name, devlink_param_generic[i].name))
3582 static struct devlink_param_item *
3583 devlink_param_find_by_name(struct list_head *param_list,
3584 const char *param_name)
3586 struct devlink_param_item *param_item;
3588 list_for_each_entry(param_item, param_list, list)
3589 if (!strcmp(param_item->param->name, param_name))
3594 static struct devlink_param_item *
3595 devlink_param_find_by_id(struct list_head *param_list, u32 param_id)
3597 struct devlink_param_item *param_item;
3599 list_for_each_entry(param_item, param_list, list)
3600 if (param_item->param->id == param_id)
3606 devlink_param_cmode_is_supported(const struct devlink_param *param,
3607 enum devlink_param_cmode cmode)
3609 return test_bit(cmode, ¶m->supported_cmodes);
3612 static int devlink_param_get(struct devlink *devlink,
3613 const struct devlink_param *param,
3614 struct devlink_param_gset_ctx *ctx)
3618 return param->get(devlink, param->id, ctx);
3621 static int devlink_param_set(struct devlink *devlink,
3622 const struct devlink_param *param,
3623 struct devlink_param_gset_ctx *ctx)
3627 return param->set(devlink, param->id, ctx);
3631 devlink_param_type_to_nla_type(enum devlink_param_type param_type)
3633 switch (param_type) {
3634 case DEVLINK_PARAM_TYPE_U8:
3636 case DEVLINK_PARAM_TYPE_U16:
3638 case DEVLINK_PARAM_TYPE_U32:
3640 case DEVLINK_PARAM_TYPE_STRING:
3642 case DEVLINK_PARAM_TYPE_BOOL:
3650 devlink_nl_param_value_fill_one(struct sk_buff *msg,
3651 enum devlink_param_type type,
3652 enum devlink_param_cmode cmode,
3653 union devlink_param_value val)
3655 struct nlattr *param_value_attr;
3657 param_value_attr = nla_nest_start_noflag(msg,
3658 DEVLINK_ATTR_PARAM_VALUE);
3659 if (!param_value_attr)
3660 goto nla_put_failure;
3662 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_CMODE, cmode))
3663 goto value_nest_cancel;
3666 case DEVLINK_PARAM_TYPE_U8:
3667 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu8))
3668 goto value_nest_cancel;
3670 case DEVLINK_PARAM_TYPE_U16:
3671 if (nla_put_u16(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu16))
3672 goto value_nest_cancel;
3674 case DEVLINK_PARAM_TYPE_U32:
3675 if (nla_put_u32(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu32))
3676 goto value_nest_cancel;
3678 case DEVLINK_PARAM_TYPE_STRING:
3679 if (nla_put_string(msg, DEVLINK_ATTR_PARAM_VALUE_DATA,
3681 goto value_nest_cancel;
3683 case DEVLINK_PARAM_TYPE_BOOL:
3685 nla_put_flag(msg, DEVLINK_ATTR_PARAM_VALUE_DATA))
3686 goto value_nest_cancel;
3690 nla_nest_end(msg, param_value_attr);
3694 nla_nest_cancel(msg, param_value_attr);
3699 static int devlink_nl_param_fill(struct sk_buff *msg, struct devlink *devlink,
3700 unsigned int port_index,
3701 struct devlink_param_item *param_item,
3702 enum devlink_command cmd,
3703 u32 portid, u32 seq, int flags)
3705 union devlink_param_value param_value[DEVLINK_PARAM_CMODE_MAX + 1];
3706 bool param_value_set[DEVLINK_PARAM_CMODE_MAX + 1] = {};
3707 const struct devlink_param *param = param_item->param;
3708 struct devlink_param_gset_ctx ctx;
3709 struct nlattr *param_values_list;
3710 struct nlattr *param_attr;
3716 /* Get value from driver part to driverinit configuration mode */
3717 for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
3718 if (!devlink_param_cmode_is_supported(param, i))
3720 if (i == DEVLINK_PARAM_CMODE_DRIVERINIT) {
3721 if (!param_item->driverinit_value_valid)
3723 param_value[i] = param_item->driverinit_value;
3725 if (!param_item->published)
3728 err = devlink_param_get(devlink, param, &ctx);
3731 param_value[i] = ctx.val;
3733 param_value_set[i] = true;
3736 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
3740 if (devlink_nl_put_handle(msg, devlink))
3741 goto genlmsg_cancel;
3743 if (cmd == DEVLINK_CMD_PORT_PARAM_GET ||
3744 cmd == DEVLINK_CMD_PORT_PARAM_NEW ||
3745 cmd == DEVLINK_CMD_PORT_PARAM_DEL)
3746 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, port_index))
3747 goto genlmsg_cancel;
3749 param_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PARAM);
3751 goto genlmsg_cancel;
3752 if (nla_put_string(msg, DEVLINK_ATTR_PARAM_NAME, param->name))
3753 goto param_nest_cancel;
3754 if (param->generic && nla_put_flag(msg, DEVLINK_ATTR_PARAM_GENERIC))
3755 goto param_nest_cancel;
3757 nla_type = devlink_param_type_to_nla_type(param->type);
3759 goto param_nest_cancel;
3760 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_TYPE, nla_type))
3761 goto param_nest_cancel;
3763 param_values_list = nla_nest_start_noflag(msg,
3764 DEVLINK_ATTR_PARAM_VALUES_LIST);
3765 if (!param_values_list)
3766 goto param_nest_cancel;
3768 for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
3769 if (!param_value_set[i])
3771 err = devlink_nl_param_value_fill_one(msg, param->type,
3774 goto values_list_nest_cancel;
3777 nla_nest_end(msg, param_values_list);
3778 nla_nest_end(msg, param_attr);
3779 genlmsg_end(msg, hdr);
3782 values_list_nest_cancel:
3783 nla_nest_end(msg, param_values_list);
3785 nla_nest_cancel(msg, param_attr);
3787 genlmsg_cancel(msg, hdr);
3791 static void devlink_param_notify(struct devlink *devlink,
3792 unsigned int port_index,
3793 struct devlink_param_item *param_item,
3794 enum devlink_command cmd)
3796 struct sk_buff *msg;
3799 WARN_ON(cmd != DEVLINK_CMD_PARAM_NEW && cmd != DEVLINK_CMD_PARAM_DEL &&
3800 cmd != DEVLINK_CMD_PORT_PARAM_NEW &&
3801 cmd != DEVLINK_CMD_PORT_PARAM_DEL);
3803 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3806 err = devlink_nl_param_fill(msg, devlink, port_index, param_item, cmd,
3813 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
3814 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
3817 static int devlink_nl_cmd_param_get_dumpit(struct sk_buff *msg,
3818 struct netlink_callback *cb)
3820 struct devlink_param_item *param_item;
3821 struct devlink *devlink;
3822 int start = cb->args[0];
3826 mutex_lock(&devlink_mutex);
3827 list_for_each_entry(devlink, &devlink_list, list) {
3828 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
3830 mutex_lock(&devlink->lock);
3831 list_for_each_entry(param_item, &devlink->param_list, list) {
3836 err = devlink_nl_param_fill(msg, devlink, 0, param_item,
3837 DEVLINK_CMD_PARAM_GET,
3838 NETLINK_CB(cb->skb).portid,
3841 if (err == -EOPNOTSUPP) {
3844 mutex_unlock(&devlink->lock);
3849 mutex_unlock(&devlink->lock);
3852 mutex_unlock(&devlink_mutex);
3854 if (err != -EMSGSIZE)
3862 devlink_param_type_get_from_info(struct genl_info *info,
3863 enum devlink_param_type *param_type)
3865 if (!info->attrs[DEVLINK_ATTR_PARAM_TYPE])
3868 switch (nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_TYPE])) {
3870 *param_type = DEVLINK_PARAM_TYPE_U8;
3873 *param_type = DEVLINK_PARAM_TYPE_U16;
3876 *param_type = DEVLINK_PARAM_TYPE_U32;
3879 *param_type = DEVLINK_PARAM_TYPE_STRING;
3882 *param_type = DEVLINK_PARAM_TYPE_BOOL;
3892 devlink_param_value_get_from_info(const struct devlink_param *param,
3893 struct genl_info *info,
3894 union devlink_param_value *value)
3896 struct nlattr *param_data;
3899 param_data = info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA];
3901 if (param->type != DEVLINK_PARAM_TYPE_BOOL && !param_data)
3904 switch (param->type) {
3905 case DEVLINK_PARAM_TYPE_U8:
3906 if (nla_len(param_data) != sizeof(u8))
3908 value->vu8 = nla_get_u8(param_data);
3910 case DEVLINK_PARAM_TYPE_U16:
3911 if (nla_len(param_data) != sizeof(u16))
3913 value->vu16 = nla_get_u16(param_data);
3915 case DEVLINK_PARAM_TYPE_U32:
3916 if (nla_len(param_data) != sizeof(u32))
3918 value->vu32 = nla_get_u32(param_data);
3920 case DEVLINK_PARAM_TYPE_STRING:
3921 len = strnlen(nla_data(param_data), nla_len(param_data));
3922 if (len == nla_len(param_data) ||
3923 len >= __DEVLINK_PARAM_MAX_STRING_VALUE)
3925 strcpy(value->vstr, nla_data(param_data));
3927 case DEVLINK_PARAM_TYPE_BOOL:
3928 if (param_data && nla_len(param_data))
3930 value->vbool = nla_get_flag(param_data);
3936 static struct devlink_param_item *
3937 devlink_param_get_from_info(struct list_head *param_list,
3938 struct genl_info *info)
3942 if (!info->attrs[DEVLINK_ATTR_PARAM_NAME])
3945 param_name = nla_data(info->attrs[DEVLINK_ATTR_PARAM_NAME]);
3946 return devlink_param_find_by_name(param_list, param_name);
3949 static int devlink_nl_cmd_param_get_doit(struct sk_buff *skb,
3950 struct genl_info *info)
3952 struct devlink *devlink = info->user_ptr[0];
3953 struct devlink_param_item *param_item;
3954 struct sk_buff *msg;
3957 param_item = devlink_param_get_from_info(&devlink->param_list, info);
3961 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3965 err = devlink_nl_param_fill(msg, devlink, 0, param_item,
3966 DEVLINK_CMD_PARAM_GET,
3967 info->snd_portid, info->snd_seq, 0);
3973 return genlmsg_reply(msg, info);
3976 static int __devlink_nl_cmd_param_set_doit(struct devlink *devlink,
3977 unsigned int port_index,
3978 struct list_head *param_list,
3979 struct genl_info *info,
3980 enum devlink_command cmd)
3982 enum devlink_param_type param_type;
3983 struct devlink_param_gset_ctx ctx;
3984 enum devlink_param_cmode cmode;
3985 struct devlink_param_item *param_item;
3986 const struct devlink_param *param;
3987 union devlink_param_value value;
3990 param_item = devlink_param_get_from_info(param_list, info);
3993 param = param_item->param;
3994 err = devlink_param_type_get_from_info(info, ¶m_type);
3997 if (param_type != param->type)
3999 err = devlink_param_value_get_from_info(param, info, &value);
4002 if (param->validate) {
4003 err = param->validate(devlink, param->id, value, info->extack);
4008 if (!info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE])
4010 cmode = nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE]);
4011 if (!devlink_param_cmode_is_supported(param, cmode))
4014 if (cmode == DEVLINK_PARAM_CMODE_DRIVERINIT) {
4015 if (param->type == DEVLINK_PARAM_TYPE_STRING)
4016 strcpy(param_item->driverinit_value.vstr, value.vstr);
4018 param_item->driverinit_value = value;
4019 param_item->driverinit_value_valid = true;
4025 err = devlink_param_set(devlink, param, &ctx);
4030 devlink_param_notify(devlink, port_index, param_item, cmd);
4034 static int devlink_nl_cmd_param_set_doit(struct sk_buff *skb,
4035 struct genl_info *info)
4037 struct devlink *devlink = info->user_ptr[0];
4039 return __devlink_nl_cmd_param_set_doit(devlink, 0, &devlink->param_list,
4040 info, DEVLINK_CMD_PARAM_NEW);
4043 static int devlink_param_register_one(struct devlink *devlink,
4044 unsigned int port_index,
4045 struct list_head *param_list,
4046 const struct devlink_param *param,
4047 enum devlink_command cmd)
4049 struct devlink_param_item *param_item;
4051 if (devlink_param_find_by_name(param_list, param->name))
4054 if (param->supported_cmodes == BIT(DEVLINK_PARAM_CMODE_DRIVERINIT))
4055 WARN_ON(param->get || param->set);
4057 WARN_ON(!param->get || !param->set);
4059 param_item = kzalloc(sizeof(*param_item), GFP_KERNEL);
4062 param_item->param = param;
4064 list_add_tail(¶m_item->list, param_list);
4065 devlink_param_notify(devlink, port_index, param_item, cmd);
4069 static void devlink_param_unregister_one(struct devlink *devlink,
4070 unsigned int port_index,
4071 struct list_head *param_list,
4072 const struct devlink_param *param,
4073 enum devlink_command cmd)
4075 struct devlink_param_item *param_item;
4077 param_item = devlink_param_find_by_name(param_list, param->name);
4078 WARN_ON(!param_item);
4079 devlink_param_notify(devlink, port_index, param_item, cmd);
4080 list_del(¶m_item->list);
4084 static int devlink_nl_cmd_port_param_get_dumpit(struct sk_buff *msg,
4085 struct netlink_callback *cb)
4087 struct devlink_param_item *param_item;
4088 struct devlink_port *devlink_port;
4089 struct devlink *devlink;
4090 int start = cb->args[0];
4094 mutex_lock(&devlink_mutex);
4095 list_for_each_entry(devlink, &devlink_list, list) {
4096 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
4098 mutex_lock(&devlink->lock);
4099 list_for_each_entry(devlink_port, &devlink->port_list, list) {
4100 list_for_each_entry(param_item,
4101 &devlink_port->param_list, list) {
4106 err = devlink_nl_param_fill(msg,
4107 devlink_port->devlink,
4108 devlink_port->index, param_item,
4109 DEVLINK_CMD_PORT_PARAM_GET,
4110 NETLINK_CB(cb->skb).portid,
4113 if (err == -EOPNOTSUPP) {
4116 mutex_unlock(&devlink->lock);
4122 mutex_unlock(&devlink->lock);
4125 mutex_unlock(&devlink_mutex);
4127 if (err != -EMSGSIZE)
4134 static int devlink_nl_cmd_port_param_get_doit(struct sk_buff *skb,
4135 struct genl_info *info)
4137 struct devlink_port *devlink_port = info->user_ptr[0];
4138 struct devlink_param_item *param_item;
4139 struct sk_buff *msg;
4142 param_item = devlink_param_get_from_info(&devlink_port->param_list,
4147 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4151 err = devlink_nl_param_fill(msg, devlink_port->devlink,
4152 devlink_port->index, param_item,
4153 DEVLINK_CMD_PORT_PARAM_GET,
4154 info->snd_portid, info->snd_seq, 0);
4160 return genlmsg_reply(msg, info);
4163 static int devlink_nl_cmd_port_param_set_doit(struct sk_buff *skb,
4164 struct genl_info *info)
4166 struct devlink_port *devlink_port = info->user_ptr[0];
4168 return __devlink_nl_cmd_param_set_doit(devlink_port->devlink,
4169 devlink_port->index,
4170 &devlink_port->param_list, info,
4171 DEVLINK_CMD_PORT_PARAM_NEW);
4174 static int devlink_nl_region_snapshot_id_put(struct sk_buff *msg,
4175 struct devlink *devlink,
4176 struct devlink_snapshot *snapshot)
4178 struct nlattr *snap_attr;
4181 snap_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_SNAPSHOT);
4185 err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID, snapshot->id);
4187 goto nla_put_failure;
4189 nla_nest_end(msg, snap_attr);
4193 nla_nest_cancel(msg, snap_attr);
4197 static int devlink_nl_region_snapshots_id_put(struct sk_buff *msg,
4198 struct devlink *devlink,
4199 struct devlink_region *region)
4201 struct devlink_snapshot *snapshot;
4202 struct nlattr *snapshots_attr;
4205 snapshots_attr = nla_nest_start_noflag(msg,
4206 DEVLINK_ATTR_REGION_SNAPSHOTS);
4207 if (!snapshots_attr)
4210 list_for_each_entry(snapshot, ®ion->snapshot_list, list) {
4211 err = devlink_nl_region_snapshot_id_put(msg, devlink, snapshot);
4213 goto nla_put_failure;
4216 nla_nest_end(msg, snapshots_attr);
4220 nla_nest_cancel(msg, snapshots_attr);
4224 static int devlink_nl_region_fill(struct sk_buff *msg, struct devlink *devlink,
4225 enum devlink_command cmd, u32 portid,
4227 struct devlink_region *region)
4232 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
4236 err = devlink_nl_put_handle(msg, devlink);
4238 goto nla_put_failure;
4241 err = nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
4242 region->port->index);
4244 goto nla_put_failure;
4247 err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME, region->ops->name);
4249 goto nla_put_failure;
4251 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
4255 goto nla_put_failure;
4257 err = devlink_nl_region_snapshots_id_put(msg, devlink, region);
4259 goto nla_put_failure;
4261 genlmsg_end(msg, hdr);
4265 genlmsg_cancel(msg, hdr);
4269 static struct sk_buff *
4270 devlink_nl_region_notify_build(struct devlink_region *region,
4271 struct devlink_snapshot *snapshot,
4272 enum devlink_command cmd, u32 portid, u32 seq)
4274 struct devlink *devlink = region->devlink;
4275 struct sk_buff *msg;
4280 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4282 return ERR_PTR(-ENOMEM);
4284 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, 0, cmd);
4290 err = devlink_nl_put_handle(msg, devlink);
4292 goto out_cancel_msg;
4295 err = nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
4296 region->port->index);
4298 goto out_cancel_msg;
4301 err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME,
4304 goto out_cancel_msg;
4307 err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID,
4310 goto out_cancel_msg;
4312 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
4313 region->size, DEVLINK_ATTR_PAD);
4315 goto out_cancel_msg;
4317 genlmsg_end(msg, hdr);
4322 genlmsg_cancel(msg, hdr);
4325 return ERR_PTR(err);
4328 static void devlink_nl_region_notify(struct devlink_region *region,
4329 struct devlink_snapshot *snapshot,
4330 enum devlink_command cmd)
4332 struct devlink *devlink = region->devlink;
4333 struct sk_buff *msg;
4335 WARN_ON(cmd != DEVLINK_CMD_REGION_NEW && cmd != DEVLINK_CMD_REGION_DEL);
4337 msg = devlink_nl_region_notify_build(region, snapshot, cmd, 0, 0);
4341 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
4342 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
4346 * __devlink_snapshot_id_increment - Increment number of snapshots using an id
4347 * @devlink: devlink instance
4348 * @id: the snapshot id
4350 * Track when a new snapshot begins using an id. Load the count for the
4351 * given id from the snapshot xarray, increment it, and store it back.
4353 * Called when a new snapshot is created with the given id.
4355 * The id *must* have been previously allocated by
4356 * devlink_region_snapshot_id_get().
4358 * Returns 0 on success, or an error on failure.
4360 static int __devlink_snapshot_id_increment(struct devlink *devlink, u32 id)
4362 unsigned long count;
4365 lockdep_assert_held(&devlink->lock);
4367 p = xa_load(&devlink->snapshot_ids, id);
4371 if (WARN_ON(!xa_is_value(p)))
4374 count = xa_to_value(p);
4377 return xa_err(xa_store(&devlink->snapshot_ids, id, xa_mk_value(count),
4382 * __devlink_snapshot_id_decrement - Decrease number of snapshots using an id
4383 * @devlink: devlink instance
4384 * @id: the snapshot id
4386 * Track when a snapshot is deleted and stops using an id. Load the count
4387 * for the given id from the snapshot xarray, decrement it, and store it
4390 * If the count reaches zero, erase this id from the xarray, freeing it
4391 * up for future re-use by devlink_region_snapshot_id_get().
4393 * Called when a snapshot using the given id is deleted, and when the
4394 * initial allocator of the id is finished using it.
4396 static void __devlink_snapshot_id_decrement(struct devlink *devlink, u32 id)
4398 unsigned long count;
4401 lockdep_assert_held(&devlink->lock);
4403 p = xa_load(&devlink->snapshot_ids, id);
4407 if (WARN_ON(!xa_is_value(p)))
4410 count = xa_to_value(p);
4414 xa_store(&devlink->snapshot_ids, id, xa_mk_value(count),
4417 /* If this was the last user, we can erase this id */
4418 xa_erase(&devlink->snapshot_ids, id);
4423 * __devlink_snapshot_id_insert - Insert a specific snapshot ID
4424 * @devlink: devlink instance
4425 * @id: the snapshot id
4427 * Mark the given snapshot id as used by inserting a zero value into the
4430 * This must be called while holding the devlink instance lock. Unlike
4431 * devlink_snapshot_id_get, the initial reference count is zero, not one.
4432 * It is expected that the id will immediately be used before
4433 * releasing the devlink instance lock.
4435 * Returns zero on success, or an error code if the snapshot id could not
4438 static int __devlink_snapshot_id_insert(struct devlink *devlink, u32 id)
4440 lockdep_assert_held(&devlink->lock);
4442 if (xa_load(&devlink->snapshot_ids, id))
4445 return xa_err(xa_store(&devlink->snapshot_ids, id, xa_mk_value(0),
4450 * __devlink_region_snapshot_id_get - get snapshot ID
4451 * @devlink: devlink instance
4452 * @id: storage to return snapshot id
4454 * Allocates a new snapshot id. Returns zero on success, or a negative
4455 * error on failure. Must be called while holding the devlink instance
4458 * Snapshot IDs are tracked using an xarray which stores the number of
4459 * users of the snapshot id.
4461 * Note that the caller of this function counts as a 'user', in order to
4462 * avoid race conditions. The caller must release its hold on the
4463 * snapshot by using devlink_region_snapshot_id_put.
4465 static int __devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id)
4467 lockdep_assert_held(&devlink->lock);
4469 return xa_alloc(&devlink->snapshot_ids, id, xa_mk_value(1),
4470 xa_limit_32b, GFP_KERNEL);
4474 * __devlink_region_snapshot_create - create a new snapshot
4475 * This will add a new snapshot of a region. The snapshot
4476 * will be stored on the region struct and can be accessed
4477 * from devlink. This is useful for future analyses of snapshots.
4478 * Multiple snapshots can be created on a region.
4479 * The @snapshot_id should be obtained using the getter function.
4481 * Must be called only while holding the devlink instance lock.
4483 * @region: devlink region of the snapshot
4484 * @data: snapshot data
4485 * @snapshot_id: snapshot id to be created
4488 __devlink_region_snapshot_create(struct devlink_region *region,
4489 u8 *data, u32 snapshot_id)
4491 struct devlink *devlink = region->devlink;
4492 struct devlink_snapshot *snapshot;
4495 lockdep_assert_held(&devlink->lock);
4497 /* check if region can hold one more snapshot */
4498 if (region->cur_snapshots == region->max_snapshots)
4501 if (devlink_region_snapshot_get_by_id(region, snapshot_id))
4504 snapshot = kzalloc(sizeof(*snapshot), GFP_KERNEL);
4508 err = __devlink_snapshot_id_increment(devlink, snapshot_id);
4510 goto err_snapshot_id_increment;
4512 snapshot->id = snapshot_id;
4513 snapshot->region = region;
4514 snapshot->data = data;
4516 list_add_tail(&snapshot->list, ®ion->snapshot_list);
4518 region->cur_snapshots++;
4520 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_NEW);
4523 err_snapshot_id_increment:
4528 static void devlink_region_snapshot_del(struct devlink_region *region,
4529 struct devlink_snapshot *snapshot)
4531 struct devlink *devlink = region->devlink;
4533 lockdep_assert_held(&devlink->lock);
4535 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_DEL);
4536 region->cur_snapshots--;
4537 list_del(&snapshot->list);
4538 region->ops->destructor(snapshot->data);
4539 __devlink_snapshot_id_decrement(devlink, snapshot->id);
4543 static int devlink_nl_cmd_region_get_doit(struct sk_buff *skb,
4544 struct genl_info *info)
4546 struct devlink *devlink = info->user_ptr[0];
4547 struct devlink_port *port = NULL;
4548 struct devlink_region *region;
4549 const char *region_name;
4550 struct sk_buff *msg;
4554 if (!info->attrs[DEVLINK_ATTR_REGION_NAME])
4557 if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
4558 index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
4560 port = devlink_port_get_by_index(devlink, index);
4565 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
4567 region = devlink_port_region_get_by_name(port, region_name);
4569 region = devlink_region_get_by_name(devlink, region_name);
4574 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4578 err = devlink_nl_region_fill(msg, devlink, DEVLINK_CMD_REGION_GET,
4579 info->snd_portid, info->snd_seq, 0,
4586 return genlmsg_reply(msg, info);
4589 static int devlink_nl_cmd_region_get_port_dumpit(struct sk_buff *msg,
4590 struct netlink_callback *cb,
4591 struct devlink_port *port,
4595 struct devlink_region *region;
4598 list_for_each_entry(region, &port->region_list, list) {
4603 err = devlink_nl_region_fill(msg, port->devlink,
4604 DEVLINK_CMD_REGION_GET,
4605 NETLINK_CB(cb->skb).portid,
4607 NLM_F_MULTI, region);
4617 static int devlink_nl_cmd_region_get_devlink_dumpit(struct sk_buff *msg,
4618 struct netlink_callback *cb,
4619 struct devlink *devlink,
4623 struct devlink_region *region;
4624 struct devlink_port *port;
4627 mutex_lock(&devlink->lock);
4628 list_for_each_entry(region, &devlink->region_list, list) {
4633 err = devlink_nl_region_fill(msg, devlink,
4634 DEVLINK_CMD_REGION_GET,
4635 NETLINK_CB(cb->skb).portid,
4637 NLM_F_MULTI, region);
4643 list_for_each_entry(port, &devlink->port_list, list) {
4644 err = devlink_nl_cmd_region_get_port_dumpit(msg, cb, port, idx,
4651 mutex_unlock(&devlink->lock);
4655 static int devlink_nl_cmd_region_get_dumpit(struct sk_buff *msg,
4656 struct netlink_callback *cb)
4658 struct devlink *devlink;
4659 int start = cb->args[0];
4663 mutex_lock(&devlink_mutex);
4664 list_for_each_entry(devlink, &devlink_list, list) {
4665 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
4667 err = devlink_nl_cmd_region_get_devlink_dumpit(msg, cb, devlink,
4673 mutex_unlock(&devlink_mutex);
4678 static int devlink_nl_cmd_region_del(struct sk_buff *skb,
4679 struct genl_info *info)
4681 struct devlink *devlink = info->user_ptr[0];
4682 struct devlink_snapshot *snapshot;
4683 struct devlink_port *port = NULL;
4684 struct devlink_region *region;
4685 const char *region_name;
4689 if (!info->attrs[DEVLINK_ATTR_REGION_NAME] ||
4690 !info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID])
4693 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
4694 snapshot_id = nla_get_u32(info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
4696 if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
4697 index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
4699 port = devlink_port_get_by_index(devlink, index);
4705 region = devlink_port_region_get_by_name(port, region_name);
4707 region = devlink_region_get_by_name(devlink, region_name);
4712 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
4716 devlink_region_snapshot_del(region, snapshot);
4721 devlink_nl_cmd_region_new(struct sk_buff *skb, struct genl_info *info)
4723 struct devlink *devlink = info->user_ptr[0];
4724 struct devlink_snapshot *snapshot;
4725 struct devlink_port *port = NULL;
4726 struct nlattr *snapshot_id_attr;
4727 struct devlink_region *region;
4728 const char *region_name;
4734 if (!info->attrs[DEVLINK_ATTR_REGION_NAME]) {
4735 NL_SET_ERR_MSG_MOD(info->extack, "No region name provided");
4739 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
4741 if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
4742 index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
4744 port = devlink_port_get_by_index(devlink, index);
4750 region = devlink_port_region_get_by_name(port, region_name);
4752 region = devlink_region_get_by_name(devlink, region_name);
4755 NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not exist");
4759 if (!region->ops->snapshot) {
4760 NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not support taking an immediate snapshot");
4764 if (region->cur_snapshots == region->max_snapshots) {
4765 NL_SET_ERR_MSG_MOD(info->extack, "The region has reached the maximum number of stored snapshots");
4769 snapshot_id_attr = info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID];
4770 if (snapshot_id_attr) {
4771 snapshot_id = nla_get_u32(snapshot_id_attr);
4773 if (devlink_region_snapshot_get_by_id(region, snapshot_id)) {
4774 NL_SET_ERR_MSG_MOD(info->extack, "The requested snapshot id is already in use");
4778 err = __devlink_snapshot_id_insert(devlink, snapshot_id);
4782 err = __devlink_region_snapshot_id_get(devlink, &snapshot_id);
4784 NL_SET_ERR_MSG_MOD(info->extack, "Failed to allocate a new snapshot id");
4790 err = region->port_ops->snapshot(port, region->port_ops,
4791 info->extack, &data);
4793 err = region->ops->snapshot(devlink, region->ops,
4794 info->extack, &data);
4796 goto err_snapshot_capture;
4798 err = __devlink_region_snapshot_create(region, data, snapshot_id);
4800 goto err_snapshot_create;
4802 if (!snapshot_id_attr) {
4803 struct sk_buff *msg;
4805 snapshot = devlink_region_snapshot_get_by_id(region,
4807 if (WARN_ON(!snapshot))
4810 msg = devlink_nl_region_notify_build(region, snapshot,
4811 DEVLINK_CMD_REGION_NEW,
4814 err = PTR_ERR_OR_ZERO(msg);
4818 err = genlmsg_reply(msg, info);
4825 err_snapshot_create:
4826 region->ops->destructor(data);
4827 err_snapshot_capture:
4828 __devlink_snapshot_id_decrement(devlink, snapshot_id);
4832 devlink_region_snapshot_del(region, snapshot);
4836 static int devlink_nl_cmd_region_read_chunk_fill(struct sk_buff *msg,
4837 struct devlink *devlink,
4838 u8 *chunk, u32 chunk_size,
4841 struct nlattr *chunk_attr;
4844 chunk_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_CHUNK);
4848 err = nla_put(msg, DEVLINK_ATTR_REGION_CHUNK_DATA, chunk_size, chunk);
4850 goto nla_put_failure;
4852 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_CHUNK_ADDR, addr,
4855 goto nla_put_failure;
4857 nla_nest_end(msg, chunk_attr);
4861 nla_nest_cancel(msg, chunk_attr);
4865 #define DEVLINK_REGION_READ_CHUNK_SIZE 256
4867 static int devlink_nl_region_read_snapshot_fill(struct sk_buff *skb,
4868 struct devlink *devlink,
4869 struct devlink_region *region,
4870 struct nlattr **attrs,
4875 struct devlink_snapshot *snapshot;
4876 u64 curr_offset = start_offset;
4880 *new_offset = start_offset;
4882 snapshot_id = nla_get_u32(attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
4883 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
4887 while (curr_offset < end_offset) {
4891 if (end_offset - curr_offset < DEVLINK_REGION_READ_CHUNK_SIZE)
4892 data_size = end_offset - curr_offset;
4894 data_size = DEVLINK_REGION_READ_CHUNK_SIZE;
4896 data = &snapshot->data[curr_offset];
4897 err = devlink_nl_cmd_region_read_chunk_fill(skb, devlink,
4903 curr_offset += data_size;
4905 *new_offset = curr_offset;
4910 static int devlink_nl_cmd_region_read_dumpit(struct sk_buff *skb,
4911 struct netlink_callback *cb)
4913 const struct genl_dumpit_info *info = genl_dumpit_info(cb);
4914 u64 ret_offset, start_offset, end_offset = U64_MAX;
4915 struct nlattr **attrs = info->attrs;
4916 struct devlink_port *port = NULL;
4917 struct devlink_region *region;
4918 struct nlattr *chunks_attr;
4919 const char *region_name;
4920 struct devlink *devlink;
4925 start_offset = *((u64 *)&cb->args[0]);
4927 mutex_lock(&devlink_mutex);
4928 devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
4929 if (IS_ERR(devlink)) {
4930 err = PTR_ERR(devlink);
4934 mutex_lock(&devlink->lock);
4936 if (!attrs[DEVLINK_ATTR_REGION_NAME] ||
4937 !attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]) {
4942 if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
4943 index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
4945 port = devlink_port_get_by_index(devlink, index);
4952 region_name = nla_data(attrs[DEVLINK_ATTR_REGION_NAME]);
4955 region = devlink_port_region_get_by_name(port, region_name);
4957 region = devlink_region_get_by_name(devlink, region_name);
4964 if (attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR] &&
4965 attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]) {
4968 nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
4970 end_offset = nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
4971 end_offset += nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]);
4974 if (end_offset > region->size)
4975 end_offset = region->size;
4977 /* return 0 if there is no further data to read */
4978 if (start_offset == end_offset) {
4983 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
4984 &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI,
4985 DEVLINK_CMD_REGION_READ);
4991 err = devlink_nl_put_handle(skb, devlink);
4993 goto nla_put_failure;
4996 err = nla_put_u32(skb, DEVLINK_ATTR_PORT_INDEX,
4997 region->port->index);
4999 goto nla_put_failure;
5002 err = nla_put_string(skb, DEVLINK_ATTR_REGION_NAME, region_name);
5004 goto nla_put_failure;
5006 chunks_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_REGION_CHUNKS);
5009 goto nla_put_failure;
5012 err = devlink_nl_region_read_snapshot_fill(skb, devlink,
5015 end_offset, &ret_offset);
5017 if (err && err != -EMSGSIZE)
5018 goto nla_put_failure;
5020 /* Check if there was any progress done to prevent infinite loop */
5021 if (ret_offset == start_offset) {
5023 goto nla_put_failure;
5026 *((u64 *)&cb->args[0]) = ret_offset;
5028 nla_nest_end(skb, chunks_attr);
5029 genlmsg_end(skb, hdr);
5030 mutex_unlock(&devlink->lock);
5031 mutex_unlock(&devlink_mutex);
5036 genlmsg_cancel(skb, hdr);
5038 mutex_unlock(&devlink->lock);
5040 mutex_unlock(&devlink_mutex);
5044 struct devlink_info_req {
5045 struct sk_buff *msg;
5048 int devlink_info_driver_name_put(struct devlink_info_req *req, const char *name)
5050 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_DRIVER_NAME, name);
5052 EXPORT_SYMBOL_GPL(devlink_info_driver_name_put);
5054 int devlink_info_serial_number_put(struct devlink_info_req *req, const char *sn)
5056 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_SERIAL_NUMBER, sn);
5058 EXPORT_SYMBOL_GPL(devlink_info_serial_number_put);
5060 int devlink_info_board_serial_number_put(struct devlink_info_req *req,
5063 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_BOARD_SERIAL_NUMBER,
5066 EXPORT_SYMBOL_GPL(devlink_info_board_serial_number_put);
5068 static int devlink_info_version_put(struct devlink_info_req *req, int attr,
5069 const char *version_name,
5070 const char *version_value)
5072 struct nlattr *nest;
5075 nest = nla_nest_start_noflag(req->msg, attr);
5079 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_NAME,
5082 goto nla_put_failure;
5084 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_VALUE,
5087 goto nla_put_failure;
5089 nla_nest_end(req->msg, nest);
5094 nla_nest_cancel(req->msg, nest);
5098 int devlink_info_version_fixed_put(struct devlink_info_req *req,
5099 const char *version_name,
5100 const char *version_value)
5102 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_FIXED,
5103 version_name, version_value);
5105 EXPORT_SYMBOL_GPL(devlink_info_version_fixed_put);
5107 int devlink_info_version_stored_put(struct devlink_info_req *req,
5108 const char *version_name,
5109 const char *version_value)
5111 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_STORED,
5112 version_name, version_value);
5114 EXPORT_SYMBOL_GPL(devlink_info_version_stored_put);
5116 int devlink_info_version_running_put(struct devlink_info_req *req,
5117 const char *version_name,
5118 const char *version_value)
5120 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_RUNNING,
5121 version_name, version_value);
5123 EXPORT_SYMBOL_GPL(devlink_info_version_running_put);
5126 devlink_nl_info_fill(struct sk_buff *msg, struct devlink *devlink,
5127 enum devlink_command cmd, u32 portid,
5128 u32 seq, int flags, struct netlink_ext_ack *extack)
5130 struct devlink_info_req req;
5134 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
5139 if (devlink_nl_put_handle(msg, devlink))
5140 goto err_cancel_msg;
5143 err = devlink->ops->info_get(devlink, &req, extack);
5145 goto err_cancel_msg;
5147 genlmsg_end(msg, hdr);
5151 genlmsg_cancel(msg, hdr);
5155 static int devlink_nl_cmd_info_get_doit(struct sk_buff *skb,
5156 struct genl_info *info)
5158 struct devlink *devlink = info->user_ptr[0];
5159 struct sk_buff *msg;
5162 if (!devlink->ops->info_get)
5165 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5169 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
5170 info->snd_portid, info->snd_seq, 0,
5177 return genlmsg_reply(msg, info);
5180 static int devlink_nl_cmd_info_get_dumpit(struct sk_buff *msg,
5181 struct netlink_callback *cb)
5183 struct devlink *devlink;
5184 int start = cb->args[0];
5188 mutex_lock(&devlink_mutex);
5189 list_for_each_entry(devlink, &devlink_list, list) {
5190 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
5197 if (!devlink->ops->info_get) {
5202 mutex_lock(&devlink->lock);
5203 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
5204 NETLINK_CB(cb->skb).portid,
5205 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5207 mutex_unlock(&devlink->lock);
5208 if (err == -EOPNOTSUPP)
5214 mutex_unlock(&devlink_mutex);
5216 if (err != -EMSGSIZE)
5223 struct devlink_fmsg_item {
5224 struct list_head list;
5231 struct devlink_fmsg {
5232 struct list_head item_list;
5233 bool putting_binary; /* This flag forces enclosing of binary data
5234 * in an array brackets. It forces using
5235 * of designated API:
5236 * devlink_fmsg_binary_pair_nest_start()
5237 * devlink_fmsg_binary_pair_nest_end()
5241 static struct devlink_fmsg *devlink_fmsg_alloc(void)
5243 struct devlink_fmsg *fmsg;
5245 fmsg = kzalloc(sizeof(*fmsg), GFP_KERNEL);
5249 INIT_LIST_HEAD(&fmsg->item_list);
5254 static void devlink_fmsg_free(struct devlink_fmsg *fmsg)
5256 struct devlink_fmsg_item *item, *tmp;
5258 list_for_each_entry_safe(item, tmp, &fmsg->item_list, list) {
5259 list_del(&item->list);
5265 static int devlink_fmsg_nest_common(struct devlink_fmsg *fmsg,
5268 struct devlink_fmsg_item *item;
5270 item = kzalloc(sizeof(*item), GFP_KERNEL);
5274 item->attrtype = attrtype;
5275 list_add_tail(&item->list, &fmsg->item_list);
5280 int devlink_fmsg_obj_nest_start(struct devlink_fmsg *fmsg)
5282 if (fmsg->putting_binary)
5285 return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_OBJ_NEST_START);
5287 EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_start);
5289 static int devlink_fmsg_nest_end(struct devlink_fmsg *fmsg)
5291 if (fmsg->putting_binary)
5294 return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_NEST_END);
5297 int devlink_fmsg_obj_nest_end(struct devlink_fmsg *fmsg)
5299 if (fmsg->putting_binary)
5302 return devlink_fmsg_nest_end(fmsg);
5304 EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_end);
5306 #define DEVLINK_FMSG_MAX_SIZE (GENLMSG_DEFAULT_SIZE - GENL_HDRLEN - NLA_HDRLEN)
5308 static int devlink_fmsg_put_name(struct devlink_fmsg *fmsg, const char *name)
5310 struct devlink_fmsg_item *item;
5312 if (fmsg->putting_binary)
5315 if (strlen(name) + 1 > DEVLINK_FMSG_MAX_SIZE)
5318 item = kzalloc(sizeof(*item) + strlen(name) + 1, GFP_KERNEL);
5322 item->nla_type = NLA_NUL_STRING;
5323 item->len = strlen(name) + 1;
5324 item->attrtype = DEVLINK_ATTR_FMSG_OBJ_NAME;
5325 memcpy(&item->value, name, item->len);
5326 list_add_tail(&item->list, &fmsg->item_list);
5331 int devlink_fmsg_pair_nest_start(struct devlink_fmsg *fmsg, const char *name)
5335 if (fmsg->putting_binary)
5338 err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_PAIR_NEST_START);
5342 err = devlink_fmsg_put_name(fmsg, name);
5348 EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_start);
5350 int devlink_fmsg_pair_nest_end(struct devlink_fmsg *fmsg)
5352 if (fmsg->putting_binary)
5355 return devlink_fmsg_nest_end(fmsg);
5357 EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_end);
5359 int devlink_fmsg_arr_pair_nest_start(struct devlink_fmsg *fmsg,
5364 if (fmsg->putting_binary)
5367 err = devlink_fmsg_pair_nest_start(fmsg, name);
5371 err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_ARR_NEST_START);
5377 EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_start);
5379 int devlink_fmsg_arr_pair_nest_end(struct devlink_fmsg *fmsg)
5383 if (fmsg->putting_binary)
5386 err = devlink_fmsg_nest_end(fmsg);
5390 err = devlink_fmsg_nest_end(fmsg);
5396 EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_end);
5398 int devlink_fmsg_binary_pair_nest_start(struct devlink_fmsg *fmsg,
5403 err = devlink_fmsg_arr_pair_nest_start(fmsg, name);
5407 fmsg->putting_binary = true;
5410 EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_start);
5412 int devlink_fmsg_binary_pair_nest_end(struct devlink_fmsg *fmsg)
5414 if (!fmsg->putting_binary)
5417 fmsg->putting_binary = false;
5418 return devlink_fmsg_arr_pair_nest_end(fmsg);
5420 EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_end);
5422 static int devlink_fmsg_put_value(struct devlink_fmsg *fmsg,
5423 const void *value, u16 value_len,
5426 struct devlink_fmsg_item *item;
5428 if (value_len > DEVLINK_FMSG_MAX_SIZE)
5431 item = kzalloc(sizeof(*item) + value_len, GFP_KERNEL);
5435 item->nla_type = value_nla_type;
5436 item->len = value_len;
5437 item->attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
5438 memcpy(&item->value, value, item->len);
5439 list_add_tail(&item->list, &fmsg->item_list);
5444 int devlink_fmsg_bool_put(struct devlink_fmsg *fmsg, bool value)
5446 if (fmsg->putting_binary)
5449 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_FLAG);
5451 EXPORT_SYMBOL_GPL(devlink_fmsg_bool_put);
5453 int devlink_fmsg_u8_put(struct devlink_fmsg *fmsg, u8 value)
5455 if (fmsg->putting_binary)
5458 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U8);
5460 EXPORT_SYMBOL_GPL(devlink_fmsg_u8_put);
5462 int devlink_fmsg_u32_put(struct devlink_fmsg *fmsg, u32 value)
5464 if (fmsg->putting_binary)
5467 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U32);
5469 EXPORT_SYMBOL_GPL(devlink_fmsg_u32_put);
5471 int devlink_fmsg_u64_put(struct devlink_fmsg *fmsg, u64 value)
5473 if (fmsg->putting_binary)
5476 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U64);
5478 EXPORT_SYMBOL_GPL(devlink_fmsg_u64_put);
5480 int devlink_fmsg_string_put(struct devlink_fmsg *fmsg, const char *value)
5482 if (fmsg->putting_binary)
5485 return devlink_fmsg_put_value(fmsg, value, strlen(value) + 1,
5488 EXPORT_SYMBOL_GPL(devlink_fmsg_string_put);
5490 int devlink_fmsg_binary_put(struct devlink_fmsg *fmsg, const void *value,
5493 if (!fmsg->putting_binary)
5496 return devlink_fmsg_put_value(fmsg, value, value_len, NLA_BINARY);
5498 EXPORT_SYMBOL_GPL(devlink_fmsg_binary_put);
5500 int devlink_fmsg_bool_pair_put(struct devlink_fmsg *fmsg, const char *name,
5505 err = devlink_fmsg_pair_nest_start(fmsg, name);
5509 err = devlink_fmsg_bool_put(fmsg, value);
5513 err = devlink_fmsg_pair_nest_end(fmsg);
5519 EXPORT_SYMBOL_GPL(devlink_fmsg_bool_pair_put);
5521 int devlink_fmsg_u8_pair_put(struct devlink_fmsg *fmsg, const char *name,
5526 err = devlink_fmsg_pair_nest_start(fmsg, name);
5530 err = devlink_fmsg_u8_put(fmsg, value);
5534 err = devlink_fmsg_pair_nest_end(fmsg);
5540 EXPORT_SYMBOL_GPL(devlink_fmsg_u8_pair_put);
5542 int devlink_fmsg_u32_pair_put(struct devlink_fmsg *fmsg, const char *name,
5547 err = devlink_fmsg_pair_nest_start(fmsg, name);
5551 err = devlink_fmsg_u32_put(fmsg, value);
5555 err = devlink_fmsg_pair_nest_end(fmsg);
5561 EXPORT_SYMBOL_GPL(devlink_fmsg_u32_pair_put);
5563 int devlink_fmsg_u64_pair_put(struct devlink_fmsg *fmsg, const char *name,
5568 err = devlink_fmsg_pair_nest_start(fmsg, name);
5572 err = devlink_fmsg_u64_put(fmsg, value);
5576 err = devlink_fmsg_pair_nest_end(fmsg);
5582 EXPORT_SYMBOL_GPL(devlink_fmsg_u64_pair_put);
5584 int devlink_fmsg_string_pair_put(struct devlink_fmsg *fmsg, const char *name,
5589 err = devlink_fmsg_pair_nest_start(fmsg, name);
5593 err = devlink_fmsg_string_put(fmsg, value);
5597 err = devlink_fmsg_pair_nest_end(fmsg);
5603 EXPORT_SYMBOL_GPL(devlink_fmsg_string_pair_put);
5605 int devlink_fmsg_binary_pair_put(struct devlink_fmsg *fmsg, const char *name,
5606 const void *value, u32 value_len)
5613 err = devlink_fmsg_binary_pair_nest_start(fmsg, name);
5617 for (offset = 0; offset < value_len; offset += data_size) {
5618 data_size = value_len - offset;
5619 if (data_size > DEVLINK_FMSG_MAX_SIZE)
5620 data_size = DEVLINK_FMSG_MAX_SIZE;
5621 err = devlink_fmsg_binary_put(fmsg, value + offset, data_size);
5624 /* Exit from loop with a break (instead of
5625 * return) to make sure putting_binary is turned off in
5626 * devlink_fmsg_binary_pair_nest_end
5630 end_err = devlink_fmsg_binary_pair_nest_end(fmsg);
5636 EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_put);
5639 devlink_fmsg_item_fill_type(struct devlink_fmsg_item *msg, struct sk_buff *skb)
5641 switch (msg->nla_type) {
5646 case NLA_NUL_STRING:
5648 return nla_put_u8(skb, DEVLINK_ATTR_FMSG_OBJ_VALUE_TYPE,
5656 devlink_fmsg_item_fill_data(struct devlink_fmsg_item *msg, struct sk_buff *skb)
5658 int attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
5661 switch (msg->nla_type) {
5663 /* Always provide flag data, regardless of its value */
5664 tmp = *(bool *) msg->value;
5666 return nla_put_u8(skb, attrtype, tmp);
5668 return nla_put_u8(skb, attrtype, *(u8 *) msg->value);
5670 return nla_put_u32(skb, attrtype, *(u32 *) msg->value);
5672 return nla_put_u64_64bit(skb, attrtype, *(u64 *) msg->value,
5674 case NLA_NUL_STRING:
5675 return nla_put_string(skb, attrtype, (char *) &msg->value);
5677 return nla_put(skb, attrtype, msg->len, (void *) &msg->value);
5684 devlink_fmsg_prepare_skb(struct devlink_fmsg *fmsg, struct sk_buff *skb,
5687 struct devlink_fmsg_item *item;
5688 struct nlattr *fmsg_nlattr;
5692 fmsg_nlattr = nla_nest_start_noflag(skb, DEVLINK_ATTR_FMSG);
5696 list_for_each_entry(item, &fmsg->item_list, list) {
5702 switch (item->attrtype) {
5703 case DEVLINK_ATTR_FMSG_OBJ_NEST_START:
5704 case DEVLINK_ATTR_FMSG_PAIR_NEST_START:
5705 case DEVLINK_ATTR_FMSG_ARR_NEST_START:
5706 case DEVLINK_ATTR_FMSG_NEST_END:
5707 err = nla_put_flag(skb, item->attrtype);
5709 case DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA:
5710 err = devlink_fmsg_item_fill_type(item, skb);
5713 err = devlink_fmsg_item_fill_data(item, skb);
5715 case DEVLINK_ATTR_FMSG_OBJ_NAME:
5716 err = nla_put_string(skb, item->attrtype,
5717 (char *) &item->value);
5729 nla_nest_end(skb, fmsg_nlattr);
5733 static int devlink_fmsg_snd(struct devlink_fmsg *fmsg,
5734 struct genl_info *info,
5735 enum devlink_command cmd, int flags)
5737 struct nlmsghdr *nlh;
5738 struct sk_buff *skb;
5745 int tmp_index = index;
5747 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
5751 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
5752 &devlink_nl_family, flags | NLM_F_MULTI, cmd);
5755 goto nla_put_failure;
5758 err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
5761 else if (err != -EMSGSIZE || tmp_index == index)
5762 goto nla_put_failure;
5764 genlmsg_end(skb, hdr);
5765 err = genlmsg_reply(skb, info);
5770 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
5773 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
5774 NLMSG_DONE, 0, flags | NLM_F_MULTI);
5777 goto nla_put_failure;
5780 return genlmsg_reply(skb, info);
5787 static int devlink_fmsg_dumpit(struct devlink_fmsg *fmsg, struct sk_buff *skb,
5788 struct netlink_callback *cb,
5789 enum devlink_command cmd)
5791 int index = cb->args[0];
5792 int tmp_index = index;
5796 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
5797 &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI, cmd);
5800 goto nla_put_failure;
5803 err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
5804 if ((err && err != -EMSGSIZE) || tmp_index == index)
5805 goto nla_put_failure;
5807 cb->args[0] = index;
5808 genlmsg_end(skb, hdr);
5812 genlmsg_cancel(skb, hdr);
5816 struct devlink_health_reporter {
5817 struct list_head list;
5819 const struct devlink_health_reporter_ops *ops;
5820 struct devlink *devlink;
5821 struct devlink_port *devlink_port;
5822 struct devlink_fmsg *dump_fmsg;
5823 struct mutex dump_lock; /* lock parallel read/write from dump buffers */
5824 u64 graceful_period;
5832 u64 last_recovery_ts;
5833 refcount_t refcount;
5837 devlink_health_reporter_priv(struct devlink_health_reporter *reporter)
5839 return reporter->priv;
5841 EXPORT_SYMBOL_GPL(devlink_health_reporter_priv);
5843 static struct devlink_health_reporter *
5844 __devlink_health_reporter_find_by_name(struct list_head *reporter_list,
5845 struct mutex *list_lock,
5846 const char *reporter_name)
5848 struct devlink_health_reporter *reporter;
5850 lockdep_assert_held(list_lock);
5851 list_for_each_entry(reporter, reporter_list, list)
5852 if (!strcmp(reporter->ops->name, reporter_name))
5857 static struct devlink_health_reporter *
5858 devlink_health_reporter_find_by_name(struct devlink *devlink,
5859 const char *reporter_name)
5861 return __devlink_health_reporter_find_by_name(&devlink->reporter_list,
5862 &devlink->reporters_lock,
5866 static struct devlink_health_reporter *
5867 devlink_port_health_reporter_find_by_name(struct devlink_port *devlink_port,
5868 const char *reporter_name)
5870 return __devlink_health_reporter_find_by_name(&devlink_port->reporter_list,
5871 &devlink_port->reporters_lock,
5875 static struct devlink_health_reporter *
5876 __devlink_health_reporter_create(struct devlink *devlink,
5877 const struct devlink_health_reporter_ops *ops,
5878 u64 graceful_period, void *priv)
5880 struct devlink_health_reporter *reporter;
5882 if (WARN_ON(graceful_period && !ops->recover))
5883 return ERR_PTR(-EINVAL);
5885 reporter = kzalloc(sizeof(*reporter), GFP_KERNEL);
5887 return ERR_PTR(-ENOMEM);
5889 reporter->priv = priv;
5890 reporter->ops = ops;
5891 reporter->devlink = devlink;
5892 reporter->graceful_period = graceful_period;
5893 reporter->auto_recover = !!ops->recover;
5894 reporter->auto_dump = !!ops->dump;
5895 mutex_init(&reporter->dump_lock);
5896 refcount_set(&reporter->refcount, 1);
5901 * devlink_port_health_reporter_create - create devlink health reporter for
5902 * specified port instance
5904 * @port: devlink_port which should contain the new reporter
5906 * @graceful_period: to avoid recovery loops, in msecs
5909 struct devlink_health_reporter *
5910 devlink_port_health_reporter_create(struct devlink_port *port,
5911 const struct devlink_health_reporter_ops *ops,
5912 u64 graceful_period, void *priv)
5914 struct devlink_health_reporter *reporter;
5916 mutex_lock(&port->reporters_lock);
5917 if (__devlink_health_reporter_find_by_name(&port->reporter_list,
5918 &port->reporters_lock, ops->name)) {
5919 reporter = ERR_PTR(-EEXIST);
5923 reporter = __devlink_health_reporter_create(port->devlink, ops,
5924 graceful_period, priv);
5925 if (IS_ERR(reporter))
5928 reporter->devlink_port = port;
5929 list_add_tail(&reporter->list, &port->reporter_list);
5931 mutex_unlock(&port->reporters_lock);
5934 EXPORT_SYMBOL_GPL(devlink_port_health_reporter_create);
5937 * devlink_health_reporter_create - create devlink health reporter
5941 * @graceful_period: to avoid recovery loops, in msecs
5944 struct devlink_health_reporter *
5945 devlink_health_reporter_create(struct devlink *devlink,
5946 const struct devlink_health_reporter_ops *ops,
5947 u64 graceful_period, void *priv)
5949 struct devlink_health_reporter *reporter;
5951 mutex_lock(&devlink->reporters_lock);
5952 if (devlink_health_reporter_find_by_name(devlink, ops->name)) {
5953 reporter = ERR_PTR(-EEXIST);
5957 reporter = __devlink_health_reporter_create(devlink, ops,
5958 graceful_period, priv);
5959 if (IS_ERR(reporter))
5962 list_add_tail(&reporter->list, &devlink->reporter_list);
5964 mutex_unlock(&devlink->reporters_lock);
5967 EXPORT_SYMBOL_GPL(devlink_health_reporter_create);
5970 devlink_health_reporter_free(struct devlink_health_reporter *reporter)
5972 mutex_destroy(&reporter->dump_lock);
5973 if (reporter->dump_fmsg)
5974 devlink_fmsg_free(reporter->dump_fmsg);
5979 devlink_health_reporter_put(struct devlink_health_reporter *reporter)
5981 if (refcount_dec_and_test(&reporter->refcount))
5982 devlink_health_reporter_free(reporter);
5986 __devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
5988 list_del(&reporter->list);
5989 devlink_health_reporter_put(reporter);
5993 * devlink_health_reporter_destroy - destroy devlink health reporter
5995 * @reporter: devlink health reporter to destroy
5998 devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
6000 struct mutex *lock = &reporter->devlink->reporters_lock;
6003 __devlink_health_reporter_destroy(reporter);
6006 EXPORT_SYMBOL_GPL(devlink_health_reporter_destroy);
6009 * devlink_port_health_reporter_destroy - destroy devlink port health reporter
6011 * @reporter: devlink health reporter to destroy
6014 devlink_port_health_reporter_destroy(struct devlink_health_reporter *reporter)
6016 struct mutex *lock = &reporter->devlink_port->reporters_lock;
6019 __devlink_health_reporter_destroy(reporter);
6022 EXPORT_SYMBOL_GPL(devlink_port_health_reporter_destroy);
6025 devlink_nl_health_reporter_fill(struct sk_buff *msg,
6026 struct devlink *devlink,
6027 struct devlink_health_reporter *reporter,
6028 enum devlink_command cmd, u32 portid,
6031 struct nlattr *reporter_attr;
6034 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
6038 if (devlink_nl_put_handle(msg, devlink))
6039 goto genlmsg_cancel;
6041 if (reporter->devlink_port) {
6042 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, reporter->devlink_port->index))
6043 goto genlmsg_cancel;
6045 reporter_attr = nla_nest_start_noflag(msg,
6046 DEVLINK_ATTR_HEALTH_REPORTER);
6048 goto genlmsg_cancel;
6049 if (nla_put_string(msg, DEVLINK_ATTR_HEALTH_REPORTER_NAME,
6050 reporter->ops->name))
6051 goto reporter_nest_cancel;
6052 if (nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_STATE,
6053 reporter->health_state))
6054 goto reporter_nest_cancel;
6055 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_ERR_COUNT,
6056 reporter->error_count, DEVLINK_ATTR_PAD))
6057 goto reporter_nest_cancel;
6058 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_RECOVER_COUNT,
6059 reporter->recovery_count, DEVLINK_ATTR_PAD))
6060 goto reporter_nest_cancel;
6061 if (reporter->ops->recover &&
6062 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD,
6063 reporter->graceful_period,
6065 goto reporter_nest_cancel;
6066 if (reporter->ops->recover &&
6067 nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER,
6068 reporter->auto_recover))
6069 goto reporter_nest_cancel;
6070 if (reporter->dump_fmsg &&
6071 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS,
6072 jiffies_to_msecs(reporter->dump_ts),
6074 goto reporter_nest_cancel;
6075 if (reporter->dump_fmsg &&
6076 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS_NS,
6077 reporter->dump_real_ts, DEVLINK_ATTR_PAD))
6078 goto reporter_nest_cancel;
6079 if (reporter->ops->dump &&
6080 nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP,
6081 reporter->auto_dump))
6082 goto reporter_nest_cancel;
6084 nla_nest_end(msg, reporter_attr);
6085 genlmsg_end(msg, hdr);
6088 reporter_nest_cancel:
6089 nla_nest_end(msg, reporter_attr);
6091 genlmsg_cancel(msg, hdr);
6095 static void devlink_recover_notify(struct devlink_health_reporter *reporter,
6096 enum devlink_command cmd)
6098 struct sk_buff *msg;
6101 WARN_ON(cmd != DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
6103 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6107 err = devlink_nl_health_reporter_fill(msg, reporter->devlink,
6108 reporter, cmd, 0, 0, 0);
6114 genlmsg_multicast_netns(&devlink_nl_family,
6115 devlink_net(reporter->devlink),
6116 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
6120 devlink_health_reporter_recovery_done(struct devlink_health_reporter *reporter)
6122 reporter->recovery_count++;
6123 reporter->last_recovery_ts = jiffies;
6125 EXPORT_SYMBOL_GPL(devlink_health_reporter_recovery_done);
6128 devlink_health_reporter_recover(struct devlink_health_reporter *reporter,
6129 void *priv_ctx, struct netlink_ext_ack *extack)
6133 if (reporter->health_state == DEVLINK_HEALTH_REPORTER_STATE_HEALTHY)
6136 if (!reporter->ops->recover)
6139 err = reporter->ops->recover(reporter, priv_ctx, extack);
6143 devlink_health_reporter_recovery_done(reporter);
6144 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_HEALTHY;
6145 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
6151 devlink_health_dump_clear(struct devlink_health_reporter *reporter)
6153 if (!reporter->dump_fmsg)
6155 devlink_fmsg_free(reporter->dump_fmsg);
6156 reporter->dump_fmsg = NULL;
6159 static int devlink_health_do_dump(struct devlink_health_reporter *reporter,
6161 struct netlink_ext_ack *extack)
6165 if (!reporter->ops->dump)
6168 if (reporter->dump_fmsg)
6171 reporter->dump_fmsg = devlink_fmsg_alloc();
6172 if (!reporter->dump_fmsg) {
6177 err = devlink_fmsg_obj_nest_start(reporter->dump_fmsg);
6181 err = reporter->ops->dump(reporter, reporter->dump_fmsg,
6186 err = devlink_fmsg_obj_nest_end(reporter->dump_fmsg);
6190 reporter->dump_ts = jiffies;
6191 reporter->dump_real_ts = ktime_get_real_ns();
6196 devlink_health_dump_clear(reporter);
6200 int devlink_health_report(struct devlink_health_reporter *reporter,
6201 const char *msg, void *priv_ctx)
6203 enum devlink_health_reporter_state prev_health_state;
6204 struct devlink *devlink = reporter->devlink;
6205 unsigned long recover_ts_threshold;
6207 /* write a log message of the current error */
6209 trace_devlink_health_report(devlink, reporter->ops->name, msg);
6210 reporter->error_count++;
6211 prev_health_state = reporter->health_state;
6212 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
6213 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
6215 /* abort if the previous error wasn't recovered */
6216 recover_ts_threshold = reporter->last_recovery_ts +
6217 msecs_to_jiffies(reporter->graceful_period);
6218 if (reporter->auto_recover &&
6219 (prev_health_state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY ||
6220 (reporter->last_recovery_ts && reporter->recovery_count &&
6221 time_is_after_jiffies(recover_ts_threshold)))) {
6222 trace_devlink_health_recover_aborted(devlink,
6223 reporter->ops->name,
6224 reporter->health_state,
6226 reporter->last_recovery_ts);
6230 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
6232 if (reporter->auto_dump) {
6233 mutex_lock(&reporter->dump_lock);
6234 /* store current dump of current error, for later analysis */
6235 devlink_health_do_dump(reporter, priv_ctx, NULL);
6236 mutex_unlock(&reporter->dump_lock);
6239 if (reporter->auto_recover)
6240 return devlink_health_reporter_recover(reporter,
6245 EXPORT_SYMBOL_GPL(devlink_health_report);
6247 static struct devlink_health_reporter *
6248 devlink_health_reporter_get_from_attrs(struct devlink *devlink,
6249 struct nlattr **attrs)
6251 struct devlink_health_reporter *reporter;
6252 struct devlink_port *devlink_port;
6253 char *reporter_name;
6255 if (!attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME])
6258 reporter_name = nla_data(attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME]);
6259 devlink_port = devlink_port_get_from_attrs(devlink, attrs);
6260 if (IS_ERR(devlink_port)) {
6261 mutex_lock(&devlink->reporters_lock);
6262 reporter = devlink_health_reporter_find_by_name(devlink, reporter_name);
6264 refcount_inc(&reporter->refcount);
6265 mutex_unlock(&devlink->reporters_lock);
6267 mutex_lock(&devlink_port->reporters_lock);
6268 reporter = devlink_port_health_reporter_find_by_name(devlink_port, reporter_name);
6270 refcount_inc(&reporter->refcount);
6271 mutex_unlock(&devlink_port->reporters_lock);
6277 static struct devlink_health_reporter *
6278 devlink_health_reporter_get_from_info(struct devlink *devlink,
6279 struct genl_info *info)
6281 return devlink_health_reporter_get_from_attrs(devlink, info->attrs);
6284 static struct devlink_health_reporter *
6285 devlink_health_reporter_get_from_cb(struct netlink_callback *cb)
6287 const struct genl_dumpit_info *info = genl_dumpit_info(cb);
6288 struct devlink_health_reporter *reporter;
6289 struct nlattr **attrs = info->attrs;
6290 struct devlink *devlink;
6292 mutex_lock(&devlink_mutex);
6293 devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
6294 if (IS_ERR(devlink))
6297 reporter = devlink_health_reporter_get_from_attrs(devlink, attrs);
6298 mutex_unlock(&devlink_mutex);
6301 mutex_unlock(&devlink_mutex);
6306 devlink_health_reporter_state_update(struct devlink_health_reporter *reporter,
6307 enum devlink_health_reporter_state state)
6309 if (WARN_ON(state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY &&
6310 state != DEVLINK_HEALTH_REPORTER_STATE_ERROR))
6313 if (reporter->health_state == state)
6316 reporter->health_state = state;
6317 trace_devlink_health_reporter_state_update(reporter->devlink,
6318 reporter->ops->name, state);
6319 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
6321 EXPORT_SYMBOL_GPL(devlink_health_reporter_state_update);
6323 static int devlink_nl_cmd_health_reporter_get_doit(struct sk_buff *skb,
6324 struct genl_info *info)
6326 struct devlink *devlink = info->user_ptr[0];
6327 struct devlink_health_reporter *reporter;
6328 struct sk_buff *msg;
6331 reporter = devlink_health_reporter_get_from_info(devlink, info);
6335 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6341 err = devlink_nl_health_reporter_fill(msg, devlink, reporter,
6342 DEVLINK_CMD_HEALTH_REPORTER_GET,
6343 info->snd_portid, info->snd_seq,
6350 err = genlmsg_reply(msg, info);
6352 devlink_health_reporter_put(reporter);
6357 devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg,
6358 struct netlink_callback *cb)
6360 struct devlink_health_reporter *reporter;
6361 struct devlink_port *port;
6362 struct devlink *devlink;
6363 int start = cb->args[0];
6367 mutex_lock(&devlink_mutex);
6368 list_for_each_entry(devlink, &devlink_list, list) {
6369 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
6371 mutex_lock(&devlink->reporters_lock);
6372 list_for_each_entry(reporter, &devlink->reporter_list,
6378 err = devlink_nl_health_reporter_fill(msg, devlink,
6380 DEVLINK_CMD_HEALTH_REPORTER_GET,
6381 NETLINK_CB(cb->skb).portid,
6385 mutex_unlock(&devlink->reporters_lock);
6390 mutex_unlock(&devlink->reporters_lock);
6393 list_for_each_entry(devlink, &devlink_list, list) {
6394 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
6396 mutex_lock(&devlink->lock);
6397 list_for_each_entry(port, &devlink->port_list, list) {
6398 mutex_lock(&port->reporters_lock);
6399 list_for_each_entry(reporter, &port->reporter_list, list) {
6404 err = devlink_nl_health_reporter_fill(msg, devlink, reporter,
6405 DEVLINK_CMD_HEALTH_REPORTER_GET,
6406 NETLINK_CB(cb->skb).portid,
6410 mutex_unlock(&port->reporters_lock);
6411 mutex_unlock(&devlink->lock);
6416 mutex_unlock(&port->reporters_lock);
6418 mutex_unlock(&devlink->lock);
6421 mutex_unlock(&devlink_mutex);
6428 devlink_nl_cmd_health_reporter_set_doit(struct sk_buff *skb,
6429 struct genl_info *info)
6431 struct devlink *devlink = info->user_ptr[0];
6432 struct devlink_health_reporter *reporter;
6435 reporter = devlink_health_reporter_get_from_info(devlink, info);
6439 if (!reporter->ops->recover &&
6440 (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] ||
6441 info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])) {
6445 if (!reporter->ops->dump &&
6446 info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]) {
6451 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD])
6452 reporter->graceful_period =
6453 nla_get_u64(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD]);
6455 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])
6456 reporter->auto_recover =
6457 nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER]);
6459 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP])
6460 reporter->auto_dump =
6461 nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]);
6463 devlink_health_reporter_put(reporter);
6466 devlink_health_reporter_put(reporter);
6470 static int devlink_nl_cmd_health_reporter_recover_doit(struct sk_buff *skb,
6471 struct genl_info *info)
6473 struct devlink *devlink = info->user_ptr[0];
6474 struct devlink_health_reporter *reporter;
6477 reporter = devlink_health_reporter_get_from_info(devlink, info);
6481 err = devlink_health_reporter_recover(reporter, NULL, info->extack);
6483 devlink_health_reporter_put(reporter);
6487 static int devlink_nl_cmd_health_reporter_diagnose_doit(struct sk_buff *skb,
6488 struct genl_info *info)
6490 struct devlink *devlink = info->user_ptr[0];
6491 struct devlink_health_reporter *reporter;
6492 struct devlink_fmsg *fmsg;
6495 reporter = devlink_health_reporter_get_from_info(devlink, info);
6499 if (!reporter->ops->diagnose) {
6500 devlink_health_reporter_put(reporter);
6504 fmsg = devlink_fmsg_alloc();
6506 devlink_health_reporter_put(reporter);
6510 err = devlink_fmsg_obj_nest_start(fmsg);
6514 err = reporter->ops->diagnose(reporter, fmsg, info->extack);
6518 err = devlink_fmsg_obj_nest_end(fmsg);
6522 err = devlink_fmsg_snd(fmsg, info,
6523 DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE, 0);
6526 devlink_fmsg_free(fmsg);
6527 devlink_health_reporter_put(reporter);
6532 devlink_nl_cmd_health_reporter_dump_get_dumpit(struct sk_buff *skb,
6533 struct netlink_callback *cb)
6535 struct devlink_health_reporter *reporter;
6536 u64 start = cb->args[0];
6539 reporter = devlink_health_reporter_get_from_cb(cb);
6543 if (!reporter->ops->dump) {
6547 mutex_lock(&reporter->dump_lock);
6549 err = devlink_health_do_dump(reporter, NULL, cb->extack);
6552 cb->args[1] = reporter->dump_ts;
6554 if (!reporter->dump_fmsg || cb->args[1] != reporter->dump_ts) {
6555 NL_SET_ERR_MSG_MOD(cb->extack, "Dump trampled, please retry");
6560 err = devlink_fmsg_dumpit(reporter->dump_fmsg, skb, cb,
6561 DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET);
6563 mutex_unlock(&reporter->dump_lock);
6565 devlink_health_reporter_put(reporter);
6570 devlink_nl_cmd_health_reporter_dump_clear_doit(struct sk_buff *skb,
6571 struct genl_info *info)
6573 struct devlink *devlink = info->user_ptr[0];
6574 struct devlink_health_reporter *reporter;
6576 reporter = devlink_health_reporter_get_from_info(devlink, info);
6580 if (!reporter->ops->dump) {
6581 devlink_health_reporter_put(reporter);
6585 mutex_lock(&reporter->dump_lock);
6586 devlink_health_dump_clear(reporter);
6587 mutex_unlock(&reporter->dump_lock);
6588 devlink_health_reporter_put(reporter);
6592 static int devlink_nl_cmd_health_reporter_test_doit(struct sk_buff *skb,
6593 struct genl_info *info)
6595 struct devlink *devlink = info->user_ptr[0];
6596 struct devlink_health_reporter *reporter;
6599 reporter = devlink_health_reporter_get_from_info(devlink, info);
6603 if (!reporter->ops->test) {
6604 devlink_health_reporter_put(reporter);
6608 err = reporter->ops->test(reporter, info->extack);
6610 devlink_health_reporter_put(reporter);
6614 struct devlink_stats {
6617 struct u64_stats_sync syncp;
6621 * struct devlink_trap_policer_item - Packet trap policer attributes.
6622 * @policer: Immutable packet trap policer attributes.
6623 * @rate: Rate in packets / sec.
6624 * @burst: Burst size in packets.
6625 * @list: trap_policer_list member.
6627 * Describes packet trap policer attributes. Created by devlink during trap
6628 * policer registration.
6630 struct devlink_trap_policer_item {
6631 const struct devlink_trap_policer *policer;
6634 struct list_head list;
6638 * struct devlink_trap_group_item - Packet trap group attributes.
6639 * @group: Immutable packet trap group attributes.
6640 * @policer_item: Associated policer item. Can be NULL.
6641 * @list: trap_group_list member.
6642 * @stats: Trap group statistics.
6644 * Describes packet trap group attributes. Created by devlink during trap
6645 * group registration.
6647 struct devlink_trap_group_item {
6648 const struct devlink_trap_group *group;
6649 struct devlink_trap_policer_item *policer_item;
6650 struct list_head list;
6651 struct devlink_stats __percpu *stats;
6655 * struct devlink_trap_item - Packet trap attributes.
6656 * @trap: Immutable packet trap attributes.
6657 * @group_item: Associated group item.
6658 * @list: trap_list member.
6659 * @action: Trap action.
6660 * @stats: Trap statistics.
6661 * @priv: Driver private information.
6663 * Describes both mutable and immutable packet trap attributes. Created by
6664 * devlink during trap registration and used for all trap related operations.
6666 struct devlink_trap_item {
6667 const struct devlink_trap *trap;
6668 struct devlink_trap_group_item *group_item;
6669 struct list_head list;
6670 enum devlink_trap_action action;
6671 struct devlink_stats __percpu *stats;
6675 static struct devlink_trap_policer_item *
6676 devlink_trap_policer_item_lookup(struct devlink *devlink, u32 id)
6678 struct devlink_trap_policer_item *policer_item;
6680 list_for_each_entry(policer_item, &devlink->trap_policer_list, list) {
6681 if (policer_item->policer->id == id)
6682 return policer_item;
6688 static struct devlink_trap_item *
6689 devlink_trap_item_lookup(struct devlink *devlink, const char *name)
6691 struct devlink_trap_item *trap_item;
6693 list_for_each_entry(trap_item, &devlink->trap_list, list) {
6694 if (!strcmp(trap_item->trap->name, name))
6701 static struct devlink_trap_item *
6702 devlink_trap_item_get_from_info(struct devlink *devlink,
6703 struct genl_info *info)
6705 struct nlattr *attr;
6707 if (!info->attrs[DEVLINK_ATTR_TRAP_NAME])
6709 attr = info->attrs[DEVLINK_ATTR_TRAP_NAME];
6711 return devlink_trap_item_lookup(devlink, nla_data(attr));
6715 devlink_trap_action_get_from_info(struct genl_info *info,
6716 enum devlink_trap_action *p_trap_action)
6720 val = nla_get_u8(info->attrs[DEVLINK_ATTR_TRAP_ACTION]);
6722 case DEVLINK_TRAP_ACTION_DROP:
6723 case DEVLINK_TRAP_ACTION_TRAP:
6724 case DEVLINK_TRAP_ACTION_MIRROR:
6725 *p_trap_action = val;
6734 static int devlink_trap_metadata_put(struct sk_buff *msg,
6735 const struct devlink_trap *trap)
6737 struct nlattr *attr;
6739 attr = nla_nest_start(msg, DEVLINK_ATTR_TRAP_METADATA);
6743 if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_IN_PORT) &&
6744 nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_IN_PORT))
6745 goto nla_put_failure;
6746 if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_FA_COOKIE) &&
6747 nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_FA_COOKIE))
6748 goto nla_put_failure;
6750 nla_nest_end(msg, attr);
6755 nla_nest_cancel(msg, attr);
6759 static void devlink_trap_stats_read(struct devlink_stats __percpu *trap_stats,
6760 struct devlink_stats *stats)
6764 memset(stats, 0, sizeof(*stats));
6765 for_each_possible_cpu(i) {
6766 struct devlink_stats *cpu_stats;
6767 u64 rx_packets, rx_bytes;
6770 cpu_stats = per_cpu_ptr(trap_stats, i);
6772 start = u64_stats_fetch_begin_irq(&cpu_stats->syncp);
6773 rx_packets = cpu_stats->rx_packets;
6774 rx_bytes = cpu_stats->rx_bytes;
6775 } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start));
6777 stats->rx_packets += rx_packets;
6778 stats->rx_bytes += rx_bytes;
6782 static int devlink_trap_stats_put(struct sk_buff *msg,
6783 struct devlink_stats __percpu *trap_stats)
6785 struct devlink_stats stats;
6786 struct nlattr *attr;
6788 devlink_trap_stats_read(trap_stats, &stats);
6790 attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
6794 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_PACKETS,
6795 stats.rx_packets, DEVLINK_ATTR_PAD))
6796 goto nla_put_failure;
6798 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_BYTES,
6799 stats.rx_bytes, DEVLINK_ATTR_PAD))
6800 goto nla_put_failure;
6802 nla_nest_end(msg, attr);
6807 nla_nest_cancel(msg, attr);
6811 static int devlink_nl_trap_fill(struct sk_buff *msg, struct devlink *devlink,
6812 const struct devlink_trap_item *trap_item,
6813 enum devlink_command cmd, u32 portid, u32 seq,
6816 struct devlink_trap_group_item *group_item = trap_item->group_item;
6820 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
6824 if (devlink_nl_put_handle(msg, devlink))
6825 goto nla_put_failure;
6827 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
6828 group_item->group->name))
6829 goto nla_put_failure;
6831 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_NAME, trap_item->trap->name))
6832 goto nla_put_failure;
6834 if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_TYPE, trap_item->trap->type))
6835 goto nla_put_failure;
6837 if (trap_item->trap->generic &&
6838 nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
6839 goto nla_put_failure;
6841 if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_ACTION, trap_item->action))
6842 goto nla_put_failure;
6844 err = devlink_trap_metadata_put(msg, trap_item->trap);
6846 goto nla_put_failure;
6848 err = devlink_trap_stats_put(msg, trap_item->stats);
6850 goto nla_put_failure;
6852 genlmsg_end(msg, hdr);
6857 genlmsg_cancel(msg, hdr);
6861 static int devlink_nl_cmd_trap_get_doit(struct sk_buff *skb,
6862 struct genl_info *info)
6864 struct netlink_ext_ack *extack = info->extack;
6865 struct devlink *devlink = info->user_ptr[0];
6866 struct devlink_trap_item *trap_item;
6867 struct sk_buff *msg;
6870 if (list_empty(&devlink->trap_list))
6873 trap_item = devlink_trap_item_get_from_info(devlink, info);
6875 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
6879 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6883 err = devlink_nl_trap_fill(msg, devlink, trap_item,
6884 DEVLINK_CMD_TRAP_NEW, info->snd_portid,
6889 return genlmsg_reply(msg, info);
6896 static int devlink_nl_cmd_trap_get_dumpit(struct sk_buff *msg,
6897 struct netlink_callback *cb)
6899 struct devlink_trap_item *trap_item;
6900 struct devlink *devlink;
6901 int start = cb->args[0];
6905 mutex_lock(&devlink_mutex);
6906 list_for_each_entry(devlink, &devlink_list, list) {
6907 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
6909 mutex_lock(&devlink->lock);
6910 list_for_each_entry(trap_item, &devlink->trap_list, list) {
6915 err = devlink_nl_trap_fill(msg, devlink, trap_item,
6916 DEVLINK_CMD_TRAP_NEW,
6917 NETLINK_CB(cb->skb).portid,
6921 mutex_unlock(&devlink->lock);
6926 mutex_unlock(&devlink->lock);
6929 mutex_unlock(&devlink_mutex);
6935 static int __devlink_trap_action_set(struct devlink *devlink,
6936 struct devlink_trap_item *trap_item,
6937 enum devlink_trap_action trap_action,
6938 struct netlink_ext_ack *extack)
6942 if (trap_item->action != trap_action &&
6943 trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP) {
6944 NL_SET_ERR_MSG_MOD(extack, "Cannot change action of non-drop traps. Skipping");
6948 err = devlink->ops->trap_action_set(devlink, trap_item->trap,
6949 trap_action, extack);
6953 trap_item->action = trap_action;
6958 static int devlink_trap_action_set(struct devlink *devlink,
6959 struct devlink_trap_item *trap_item,
6960 struct genl_info *info)
6962 enum devlink_trap_action trap_action;
6965 if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
6968 err = devlink_trap_action_get_from_info(info, &trap_action);
6970 NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
6974 return __devlink_trap_action_set(devlink, trap_item, trap_action,
6978 static int devlink_nl_cmd_trap_set_doit(struct sk_buff *skb,
6979 struct genl_info *info)
6981 struct netlink_ext_ack *extack = info->extack;
6982 struct devlink *devlink = info->user_ptr[0];
6983 struct devlink_trap_item *trap_item;
6986 if (list_empty(&devlink->trap_list))
6989 trap_item = devlink_trap_item_get_from_info(devlink, info);
6991 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
6995 err = devlink_trap_action_set(devlink, trap_item, info);
7002 static struct devlink_trap_group_item *
7003 devlink_trap_group_item_lookup(struct devlink *devlink, const char *name)
7005 struct devlink_trap_group_item *group_item;
7007 list_for_each_entry(group_item, &devlink->trap_group_list, list) {
7008 if (!strcmp(group_item->group->name, name))
7015 static struct devlink_trap_group_item *
7016 devlink_trap_group_item_lookup_by_id(struct devlink *devlink, u16 id)
7018 struct devlink_trap_group_item *group_item;
7020 list_for_each_entry(group_item, &devlink->trap_group_list, list) {
7021 if (group_item->group->id == id)
7028 static struct devlink_trap_group_item *
7029 devlink_trap_group_item_get_from_info(struct devlink *devlink,
7030 struct genl_info *info)
7034 if (!info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME])
7036 name = nla_data(info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME]);
7038 return devlink_trap_group_item_lookup(devlink, name);
7042 devlink_nl_trap_group_fill(struct sk_buff *msg, struct devlink *devlink,
7043 const struct devlink_trap_group_item *group_item,
7044 enum devlink_command cmd, u32 portid, u32 seq,
7050 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
7054 if (devlink_nl_put_handle(msg, devlink))
7055 goto nla_put_failure;
7057 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
7058 group_item->group->name))
7059 goto nla_put_failure;
7061 if (group_item->group->generic &&
7062 nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
7063 goto nla_put_failure;
7065 if (group_item->policer_item &&
7066 nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID,
7067 group_item->policer_item->policer->id))
7068 goto nla_put_failure;
7070 err = devlink_trap_stats_put(msg, group_item->stats);
7072 goto nla_put_failure;
7074 genlmsg_end(msg, hdr);
7079 genlmsg_cancel(msg, hdr);
7083 static int devlink_nl_cmd_trap_group_get_doit(struct sk_buff *skb,
7084 struct genl_info *info)
7086 struct netlink_ext_ack *extack = info->extack;
7087 struct devlink *devlink = info->user_ptr[0];
7088 struct devlink_trap_group_item *group_item;
7089 struct sk_buff *msg;
7092 if (list_empty(&devlink->trap_group_list))
7095 group_item = devlink_trap_group_item_get_from_info(devlink, info);
7097 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
7101 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7105 err = devlink_nl_trap_group_fill(msg, devlink, group_item,
7106 DEVLINK_CMD_TRAP_GROUP_NEW,
7107 info->snd_portid, info->snd_seq, 0);
7109 goto err_trap_group_fill;
7111 return genlmsg_reply(msg, info);
7113 err_trap_group_fill:
7118 static int devlink_nl_cmd_trap_group_get_dumpit(struct sk_buff *msg,
7119 struct netlink_callback *cb)
7121 enum devlink_command cmd = DEVLINK_CMD_TRAP_GROUP_NEW;
7122 struct devlink_trap_group_item *group_item;
7123 u32 portid = NETLINK_CB(cb->skb).portid;
7124 struct devlink *devlink;
7125 int start = cb->args[0];
7129 mutex_lock(&devlink_mutex);
7130 list_for_each_entry(devlink, &devlink_list, list) {
7131 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
7133 mutex_lock(&devlink->lock);
7134 list_for_each_entry(group_item, &devlink->trap_group_list,
7140 err = devlink_nl_trap_group_fill(msg, devlink,
7146 mutex_unlock(&devlink->lock);
7151 mutex_unlock(&devlink->lock);
7154 mutex_unlock(&devlink_mutex);
7161 __devlink_trap_group_action_set(struct devlink *devlink,
7162 struct devlink_trap_group_item *group_item,
7163 enum devlink_trap_action trap_action,
7164 struct netlink_ext_ack *extack)
7166 const char *group_name = group_item->group->name;
7167 struct devlink_trap_item *trap_item;
7170 if (devlink->ops->trap_group_action_set) {
7171 err = devlink->ops->trap_group_action_set(devlink, group_item->group,
7172 trap_action, extack);
7176 list_for_each_entry(trap_item, &devlink->trap_list, list) {
7177 if (strcmp(trap_item->group_item->group->name, group_name))
7179 if (trap_item->action != trap_action &&
7180 trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP)
7182 trap_item->action = trap_action;
7188 list_for_each_entry(trap_item, &devlink->trap_list, list) {
7189 if (strcmp(trap_item->group_item->group->name, group_name))
7191 err = __devlink_trap_action_set(devlink, trap_item,
7192 trap_action, extack);
7201 devlink_trap_group_action_set(struct devlink *devlink,
7202 struct devlink_trap_group_item *group_item,
7203 struct genl_info *info, bool *p_modified)
7205 enum devlink_trap_action trap_action;
7208 if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
7211 err = devlink_trap_action_get_from_info(info, &trap_action);
7213 NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
7217 err = __devlink_trap_group_action_set(devlink, group_item, trap_action,
7227 static int devlink_trap_group_set(struct devlink *devlink,
7228 struct devlink_trap_group_item *group_item,
7229 struct genl_info *info)
7231 struct devlink_trap_policer_item *policer_item;
7232 struct netlink_ext_ack *extack = info->extack;
7233 const struct devlink_trap_policer *policer;
7234 struct nlattr **attrs = info->attrs;
7237 if (!attrs[DEVLINK_ATTR_TRAP_POLICER_ID])
7240 if (!devlink->ops->trap_group_set)
7243 policer_item = group_item->policer_item;
7244 if (attrs[DEVLINK_ATTR_TRAP_POLICER_ID]) {
7247 policer_id = nla_get_u32(attrs[DEVLINK_ATTR_TRAP_POLICER_ID]);
7248 policer_item = devlink_trap_policer_item_lookup(devlink,
7250 if (policer_id && !policer_item) {
7251 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
7255 policer = policer_item ? policer_item->policer : NULL;
7257 err = devlink->ops->trap_group_set(devlink, group_item->group, policer,
7262 group_item->policer_item = policer_item;
7267 static int devlink_nl_cmd_trap_group_set_doit(struct sk_buff *skb,
7268 struct genl_info *info)
7270 struct netlink_ext_ack *extack = info->extack;
7271 struct devlink *devlink = info->user_ptr[0];
7272 struct devlink_trap_group_item *group_item;
7273 bool modified = false;
7276 if (list_empty(&devlink->trap_group_list))
7279 group_item = devlink_trap_group_item_get_from_info(devlink, info);
7281 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
7285 err = devlink_trap_group_action_set(devlink, group_item, info,
7290 err = devlink_trap_group_set(devlink, group_item, info);
7292 goto err_trap_group_set;
7298 NL_SET_ERR_MSG_MOD(extack, "Trap group set failed, but some changes were committed already");
7302 static struct devlink_trap_policer_item *
7303 devlink_trap_policer_item_get_from_info(struct devlink *devlink,
7304 struct genl_info *info)
7308 if (!info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID])
7310 id = nla_get_u32(info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID]);
7312 return devlink_trap_policer_item_lookup(devlink, id);
7316 devlink_trap_policer_stats_put(struct sk_buff *msg, struct devlink *devlink,
7317 const struct devlink_trap_policer *policer)
7319 struct nlattr *attr;
7323 if (!devlink->ops->trap_policer_counter_get)
7326 err = devlink->ops->trap_policer_counter_get(devlink, policer, &drops);
7330 attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
7334 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_DROPPED, drops,
7336 goto nla_put_failure;
7338 nla_nest_end(msg, attr);
7343 nla_nest_cancel(msg, attr);
7348 devlink_nl_trap_policer_fill(struct sk_buff *msg, struct devlink *devlink,
7349 const struct devlink_trap_policer_item *policer_item,
7350 enum devlink_command cmd, u32 portid, u32 seq,
7356 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
7360 if (devlink_nl_put_handle(msg, devlink))
7361 goto nla_put_failure;
7363 if (nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID,
7364 policer_item->policer->id))
7365 goto nla_put_failure;
7367 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_RATE,
7368 policer_item->rate, DEVLINK_ATTR_PAD))
7369 goto nla_put_failure;
7371 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_BURST,
7372 policer_item->burst, DEVLINK_ATTR_PAD))
7373 goto nla_put_failure;
7375 err = devlink_trap_policer_stats_put(msg, devlink,
7376 policer_item->policer);
7378 goto nla_put_failure;
7380 genlmsg_end(msg, hdr);
7385 genlmsg_cancel(msg, hdr);
7389 static int devlink_nl_cmd_trap_policer_get_doit(struct sk_buff *skb,
7390 struct genl_info *info)
7392 struct devlink_trap_policer_item *policer_item;
7393 struct netlink_ext_ack *extack = info->extack;
7394 struct devlink *devlink = info->user_ptr[0];
7395 struct sk_buff *msg;
7398 if (list_empty(&devlink->trap_policer_list))
7401 policer_item = devlink_trap_policer_item_get_from_info(devlink, info);
7402 if (!policer_item) {
7403 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
7407 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7411 err = devlink_nl_trap_policer_fill(msg, devlink, policer_item,
7412 DEVLINK_CMD_TRAP_POLICER_NEW,
7413 info->snd_portid, info->snd_seq, 0);
7415 goto err_trap_policer_fill;
7417 return genlmsg_reply(msg, info);
7419 err_trap_policer_fill:
7424 static int devlink_nl_cmd_trap_policer_get_dumpit(struct sk_buff *msg,
7425 struct netlink_callback *cb)
7427 enum devlink_command cmd = DEVLINK_CMD_TRAP_POLICER_NEW;
7428 struct devlink_trap_policer_item *policer_item;
7429 u32 portid = NETLINK_CB(cb->skb).portid;
7430 struct devlink *devlink;
7431 int start = cb->args[0];
7435 mutex_lock(&devlink_mutex);
7436 list_for_each_entry(devlink, &devlink_list, list) {
7437 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
7439 mutex_lock(&devlink->lock);
7440 list_for_each_entry(policer_item, &devlink->trap_policer_list,
7446 err = devlink_nl_trap_policer_fill(msg, devlink,
7452 mutex_unlock(&devlink->lock);
7457 mutex_unlock(&devlink->lock);
7460 mutex_unlock(&devlink_mutex);
7467 devlink_trap_policer_set(struct devlink *devlink,
7468 struct devlink_trap_policer_item *policer_item,
7469 struct genl_info *info)
7471 struct netlink_ext_ack *extack = info->extack;
7472 struct nlattr **attrs = info->attrs;
7476 rate = policer_item->rate;
7477 burst = policer_item->burst;
7479 if (attrs[DEVLINK_ATTR_TRAP_POLICER_RATE])
7480 rate = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_RATE]);
7482 if (attrs[DEVLINK_ATTR_TRAP_POLICER_BURST])
7483 burst = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_BURST]);
7485 if (rate < policer_item->policer->min_rate) {
7486 NL_SET_ERR_MSG_MOD(extack, "Policer rate lower than limit");
7490 if (rate > policer_item->policer->max_rate) {
7491 NL_SET_ERR_MSG_MOD(extack, "Policer rate higher than limit");
7495 if (burst < policer_item->policer->min_burst) {
7496 NL_SET_ERR_MSG_MOD(extack, "Policer burst size lower than limit");
7500 if (burst > policer_item->policer->max_burst) {
7501 NL_SET_ERR_MSG_MOD(extack, "Policer burst size higher than limit");
7505 err = devlink->ops->trap_policer_set(devlink, policer_item->policer,
7506 rate, burst, info->extack);
7510 policer_item->rate = rate;
7511 policer_item->burst = burst;
7516 static int devlink_nl_cmd_trap_policer_set_doit(struct sk_buff *skb,
7517 struct genl_info *info)
7519 struct devlink_trap_policer_item *policer_item;
7520 struct netlink_ext_ack *extack = info->extack;
7521 struct devlink *devlink = info->user_ptr[0];
7523 if (list_empty(&devlink->trap_policer_list))
7526 if (!devlink->ops->trap_policer_set)
7529 policer_item = devlink_trap_policer_item_get_from_info(devlink, info);
7530 if (!policer_item) {
7531 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
7535 return devlink_trap_policer_set(devlink, policer_item, info);
7538 static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = {
7539 [DEVLINK_ATTR_UNSPEC] = { .strict_start_type =
7540 DEVLINK_ATTR_TRAP_POLICER_ID },
7541 [DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING },
7542 [DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING },
7543 [DEVLINK_ATTR_PORT_INDEX] = { .type = NLA_U32 },
7544 [DEVLINK_ATTR_PORT_TYPE] = NLA_POLICY_RANGE(NLA_U16, DEVLINK_PORT_TYPE_AUTO,
7545 DEVLINK_PORT_TYPE_IB),
7546 [DEVLINK_ATTR_PORT_SPLIT_COUNT] = { .type = NLA_U32 },
7547 [DEVLINK_ATTR_SB_INDEX] = { .type = NLA_U32 },
7548 [DEVLINK_ATTR_SB_POOL_INDEX] = { .type = NLA_U16 },
7549 [DEVLINK_ATTR_SB_POOL_TYPE] = { .type = NLA_U8 },
7550 [DEVLINK_ATTR_SB_POOL_SIZE] = { .type = NLA_U32 },
7551 [DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE] = { .type = NLA_U8 },
7552 [DEVLINK_ATTR_SB_THRESHOLD] = { .type = NLA_U32 },
7553 [DEVLINK_ATTR_SB_TC_INDEX] = { .type = NLA_U16 },
7554 [DEVLINK_ATTR_ESWITCH_MODE] = NLA_POLICY_RANGE(NLA_U16, DEVLINK_ESWITCH_MODE_LEGACY,
7555 DEVLINK_ESWITCH_MODE_SWITCHDEV),
7556 [DEVLINK_ATTR_ESWITCH_INLINE_MODE] = { .type = NLA_U8 },
7557 [DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = { .type = NLA_U8 },
7558 [DEVLINK_ATTR_DPIPE_TABLE_NAME] = { .type = NLA_NUL_STRING },
7559 [DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED] = { .type = NLA_U8 },
7560 [DEVLINK_ATTR_RESOURCE_ID] = { .type = NLA_U64},
7561 [DEVLINK_ATTR_RESOURCE_SIZE] = { .type = NLA_U64},
7562 [DEVLINK_ATTR_PARAM_NAME] = { .type = NLA_NUL_STRING },
7563 [DEVLINK_ATTR_PARAM_TYPE] = { .type = NLA_U8 },
7564 [DEVLINK_ATTR_PARAM_VALUE_CMODE] = { .type = NLA_U8 },
7565 [DEVLINK_ATTR_REGION_NAME] = { .type = NLA_NUL_STRING },
7566 [DEVLINK_ATTR_REGION_SNAPSHOT_ID] = { .type = NLA_U32 },
7567 [DEVLINK_ATTR_REGION_CHUNK_ADDR] = { .type = NLA_U64 },
7568 [DEVLINK_ATTR_REGION_CHUNK_LEN] = { .type = NLA_U64 },
7569 [DEVLINK_ATTR_HEALTH_REPORTER_NAME] = { .type = NLA_NUL_STRING },
7570 [DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] = { .type = NLA_U64 },
7571 [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER] = { .type = NLA_U8 },
7572 [DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME] = { .type = NLA_NUL_STRING },
7573 [DEVLINK_ATTR_FLASH_UPDATE_COMPONENT] = { .type = NLA_NUL_STRING },
7574 [DEVLINK_ATTR_FLASH_UPDATE_OVERWRITE_MASK] =
7575 NLA_POLICY_BITFIELD32(DEVLINK_SUPPORTED_FLASH_OVERWRITE_SECTIONS),
7576 [DEVLINK_ATTR_TRAP_NAME] = { .type = NLA_NUL_STRING },
7577 [DEVLINK_ATTR_TRAP_ACTION] = { .type = NLA_U8 },
7578 [DEVLINK_ATTR_TRAP_GROUP_NAME] = { .type = NLA_NUL_STRING },
7579 [DEVLINK_ATTR_NETNS_PID] = { .type = NLA_U32 },
7580 [DEVLINK_ATTR_NETNS_FD] = { .type = NLA_U32 },
7581 [DEVLINK_ATTR_NETNS_ID] = { .type = NLA_U32 },
7582 [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP] = { .type = NLA_U8 },
7583 [DEVLINK_ATTR_TRAP_POLICER_ID] = { .type = NLA_U32 },
7584 [DEVLINK_ATTR_TRAP_POLICER_RATE] = { .type = NLA_U64 },
7585 [DEVLINK_ATTR_TRAP_POLICER_BURST] = { .type = NLA_U64 },
7586 [DEVLINK_ATTR_PORT_FUNCTION] = { .type = NLA_NESTED },
7587 [DEVLINK_ATTR_RELOAD_ACTION] = NLA_POLICY_RANGE(NLA_U8, DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
7588 DEVLINK_RELOAD_ACTION_MAX),
7589 [DEVLINK_ATTR_RELOAD_LIMITS] = NLA_POLICY_BITFIELD32(DEVLINK_RELOAD_LIMITS_VALID_MASK),
7592 static const struct genl_small_ops devlink_nl_ops[] = {
7594 .cmd = DEVLINK_CMD_GET,
7595 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7596 .doit = devlink_nl_cmd_get_doit,
7597 .dumpit = devlink_nl_cmd_get_dumpit,
7598 /* can be retrieved by unprivileged users */
7601 .cmd = DEVLINK_CMD_PORT_GET,
7602 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7603 .doit = devlink_nl_cmd_port_get_doit,
7604 .dumpit = devlink_nl_cmd_port_get_dumpit,
7605 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
7606 /* can be retrieved by unprivileged users */
7609 .cmd = DEVLINK_CMD_PORT_SET,
7610 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7611 .doit = devlink_nl_cmd_port_set_doit,
7612 .flags = GENL_ADMIN_PERM,
7613 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
7616 .cmd = DEVLINK_CMD_PORT_SPLIT,
7617 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7618 .doit = devlink_nl_cmd_port_split_doit,
7619 .flags = GENL_ADMIN_PERM,
7620 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
7623 .cmd = DEVLINK_CMD_PORT_UNSPLIT,
7624 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7625 .doit = devlink_nl_cmd_port_unsplit_doit,
7626 .flags = GENL_ADMIN_PERM,
7627 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
7630 .cmd = DEVLINK_CMD_SB_GET,
7631 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7632 .doit = devlink_nl_cmd_sb_get_doit,
7633 .dumpit = devlink_nl_cmd_sb_get_dumpit,
7634 /* can be retrieved by unprivileged users */
7637 .cmd = DEVLINK_CMD_SB_POOL_GET,
7638 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7639 .doit = devlink_nl_cmd_sb_pool_get_doit,
7640 .dumpit = devlink_nl_cmd_sb_pool_get_dumpit,
7641 /* can be retrieved by unprivileged users */
7644 .cmd = DEVLINK_CMD_SB_POOL_SET,
7645 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7646 .doit = devlink_nl_cmd_sb_pool_set_doit,
7647 .flags = GENL_ADMIN_PERM,
7650 .cmd = DEVLINK_CMD_SB_PORT_POOL_GET,
7651 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7652 .doit = devlink_nl_cmd_sb_port_pool_get_doit,
7653 .dumpit = devlink_nl_cmd_sb_port_pool_get_dumpit,
7654 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
7655 /* can be retrieved by unprivileged users */
7658 .cmd = DEVLINK_CMD_SB_PORT_POOL_SET,
7659 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7660 .doit = devlink_nl_cmd_sb_port_pool_set_doit,
7661 .flags = GENL_ADMIN_PERM,
7662 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
7665 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_GET,
7666 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7667 .doit = devlink_nl_cmd_sb_tc_pool_bind_get_doit,
7668 .dumpit = devlink_nl_cmd_sb_tc_pool_bind_get_dumpit,
7669 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
7670 /* can be retrieved by unprivileged users */
7673 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_SET,
7674 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7675 .doit = devlink_nl_cmd_sb_tc_pool_bind_set_doit,
7676 .flags = GENL_ADMIN_PERM,
7677 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
7680 .cmd = DEVLINK_CMD_SB_OCC_SNAPSHOT,
7681 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7682 .doit = devlink_nl_cmd_sb_occ_snapshot_doit,
7683 .flags = GENL_ADMIN_PERM,
7686 .cmd = DEVLINK_CMD_SB_OCC_MAX_CLEAR,
7687 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7688 .doit = devlink_nl_cmd_sb_occ_max_clear_doit,
7689 .flags = GENL_ADMIN_PERM,
7692 .cmd = DEVLINK_CMD_ESWITCH_GET,
7693 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7694 .doit = devlink_nl_cmd_eswitch_get_doit,
7695 .flags = GENL_ADMIN_PERM,
7696 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
7699 .cmd = DEVLINK_CMD_ESWITCH_SET,
7700 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7701 .doit = devlink_nl_cmd_eswitch_set_doit,
7702 .flags = GENL_ADMIN_PERM,
7703 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
7706 .cmd = DEVLINK_CMD_DPIPE_TABLE_GET,
7707 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7708 .doit = devlink_nl_cmd_dpipe_table_get,
7709 /* can be retrieved by unprivileged users */
7712 .cmd = DEVLINK_CMD_DPIPE_ENTRIES_GET,
7713 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7714 .doit = devlink_nl_cmd_dpipe_entries_get,
7715 /* can be retrieved by unprivileged users */
7718 .cmd = DEVLINK_CMD_DPIPE_HEADERS_GET,
7719 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7720 .doit = devlink_nl_cmd_dpipe_headers_get,
7721 /* can be retrieved by unprivileged users */
7724 .cmd = DEVLINK_CMD_DPIPE_TABLE_COUNTERS_SET,
7725 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7726 .doit = devlink_nl_cmd_dpipe_table_counters_set,
7727 .flags = GENL_ADMIN_PERM,
7730 .cmd = DEVLINK_CMD_RESOURCE_SET,
7731 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7732 .doit = devlink_nl_cmd_resource_set,
7733 .flags = GENL_ADMIN_PERM,
7736 .cmd = DEVLINK_CMD_RESOURCE_DUMP,
7737 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7738 .doit = devlink_nl_cmd_resource_dump,
7739 /* can be retrieved by unprivileged users */
7742 .cmd = DEVLINK_CMD_RELOAD,
7743 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7744 .doit = devlink_nl_cmd_reload,
7745 .flags = GENL_ADMIN_PERM,
7746 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
7749 .cmd = DEVLINK_CMD_PARAM_GET,
7750 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7751 .doit = devlink_nl_cmd_param_get_doit,
7752 .dumpit = devlink_nl_cmd_param_get_dumpit,
7753 /* can be retrieved by unprivileged users */
7756 .cmd = DEVLINK_CMD_PARAM_SET,
7757 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7758 .doit = devlink_nl_cmd_param_set_doit,
7759 .flags = GENL_ADMIN_PERM,
7762 .cmd = DEVLINK_CMD_PORT_PARAM_GET,
7763 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7764 .doit = devlink_nl_cmd_port_param_get_doit,
7765 .dumpit = devlink_nl_cmd_port_param_get_dumpit,
7766 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
7767 /* can be retrieved by unprivileged users */
7770 .cmd = DEVLINK_CMD_PORT_PARAM_SET,
7771 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7772 .doit = devlink_nl_cmd_port_param_set_doit,
7773 .flags = GENL_ADMIN_PERM,
7774 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
7777 .cmd = DEVLINK_CMD_REGION_GET,
7778 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7779 .doit = devlink_nl_cmd_region_get_doit,
7780 .dumpit = devlink_nl_cmd_region_get_dumpit,
7781 .flags = GENL_ADMIN_PERM,
7784 .cmd = DEVLINK_CMD_REGION_NEW,
7785 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7786 .doit = devlink_nl_cmd_region_new,
7787 .flags = GENL_ADMIN_PERM,
7790 .cmd = DEVLINK_CMD_REGION_DEL,
7791 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7792 .doit = devlink_nl_cmd_region_del,
7793 .flags = GENL_ADMIN_PERM,
7796 .cmd = DEVLINK_CMD_REGION_READ,
7797 .validate = GENL_DONT_VALIDATE_STRICT |
7798 GENL_DONT_VALIDATE_DUMP_STRICT,
7799 .dumpit = devlink_nl_cmd_region_read_dumpit,
7800 .flags = GENL_ADMIN_PERM,
7803 .cmd = DEVLINK_CMD_INFO_GET,
7804 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7805 .doit = devlink_nl_cmd_info_get_doit,
7806 .dumpit = devlink_nl_cmd_info_get_dumpit,
7807 /* can be retrieved by unprivileged users */
7810 .cmd = DEVLINK_CMD_HEALTH_REPORTER_GET,
7811 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7812 .doit = devlink_nl_cmd_health_reporter_get_doit,
7813 .dumpit = devlink_nl_cmd_health_reporter_get_dumpit,
7814 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
7815 DEVLINK_NL_FLAG_NO_LOCK,
7816 /* can be retrieved by unprivileged users */
7819 .cmd = DEVLINK_CMD_HEALTH_REPORTER_SET,
7820 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7821 .doit = devlink_nl_cmd_health_reporter_set_doit,
7822 .flags = GENL_ADMIN_PERM,
7823 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
7824 DEVLINK_NL_FLAG_NO_LOCK,
7827 .cmd = DEVLINK_CMD_HEALTH_REPORTER_RECOVER,
7828 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7829 .doit = devlink_nl_cmd_health_reporter_recover_doit,
7830 .flags = GENL_ADMIN_PERM,
7831 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
7832 DEVLINK_NL_FLAG_NO_LOCK,
7835 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE,
7836 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7837 .doit = devlink_nl_cmd_health_reporter_diagnose_doit,
7838 .flags = GENL_ADMIN_PERM,
7839 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
7840 DEVLINK_NL_FLAG_NO_LOCK,
7843 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET,
7844 .validate = GENL_DONT_VALIDATE_STRICT |
7845 GENL_DONT_VALIDATE_DUMP_STRICT,
7846 .dumpit = devlink_nl_cmd_health_reporter_dump_get_dumpit,
7847 .flags = GENL_ADMIN_PERM,
7848 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
7849 DEVLINK_NL_FLAG_NO_LOCK,
7852 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_CLEAR,
7853 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7854 .doit = devlink_nl_cmd_health_reporter_dump_clear_doit,
7855 .flags = GENL_ADMIN_PERM,
7856 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
7857 DEVLINK_NL_FLAG_NO_LOCK,
7860 .cmd = DEVLINK_CMD_HEALTH_REPORTER_TEST,
7861 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7862 .doit = devlink_nl_cmd_health_reporter_test_doit,
7863 .flags = GENL_ADMIN_PERM,
7864 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
7865 DEVLINK_NL_FLAG_NO_LOCK,
7868 .cmd = DEVLINK_CMD_FLASH_UPDATE,
7869 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7870 .doit = devlink_nl_cmd_flash_update,
7871 .flags = GENL_ADMIN_PERM,
7874 .cmd = DEVLINK_CMD_TRAP_GET,
7875 .doit = devlink_nl_cmd_trap_get_doit,
7876 .dumpit = devlink_nl_cmd_trap_get_dumpit,
7877 /* can be retrieved by unprivileged users */
7880 .cmd = DEVLINK_CMD_TRAP_SET,
7881 .doit = devlink_nl_cmd_trap_set_doit,
7882 .flags = GENL_ADMIN_PERM,
7885 .cmd = DEVLINK_CMD_TRAP_GROUP_GET,
7886 .doit = devlink_nl_cmd_trap_group_get_doit,
7887 .dumpit = devlink_nl_cmd_trap_group_get_dumpit,
7888 /* can be retrieved by unprivileged users */
7891 .cmd = DEVLINK_CMD_TRAP_GROUP_SET,
7892 .doit = devlink_nl_cmd_trap_group_set_doit,
7893 .flags = GENL_ADMIN_PERM,
7896 .cmd = DEVLINK_CMD_TRAP_POLICER_GET,
7897 .doit = devlink_nl_cmd_trap_policer_get_doit,
7898 .dumpit = devlink_nl_cmd_trap_policer_get_dumpit,
7899 /* can be retrieved by unprivileged users */
7902 .cmd = DEVLINK_CMD_TRAP_POLICER_SET,
7903 .doit = devlink_nl_cmd_trap_policer_set_doit,
7904 .flags = GENL_ADMIN_PERM,
7908 static struct genl_family devlink_nl_family __ro_after_init = {
7909 .name = DEVLINK_GENL_NAME,
7910 .version = DEVLINK_GENL_VERSION,
7911 .maxattr = DEVLINK_ATTR_MAX,
7912 .policy = devlink_nl_policy,
7914 .pre_doit = devlink_nl_pre_doit,
7915 .post_doit = devlink_nl_post_doit,
7916 .module = THIS_MODULE,
7917 .small_ops = devlink_nl_ops,
7918 .n_small_ops = ARRAY_SIZE(devlink_nl_ops),
7919 .mcgrps = devlink_nl_mcgrps,
7920 .n_mcgrps = ARRAY_SIZE(devlink_nl_mcgrps),
7923 static bool devlink_reload_actions_valid(const struct devlink_ops *ops)
7925 const struct devlink_reload_combination *comb;
7928 if (!devlink_reload_supported(ops)) {
7929 if (WARN_ON(ops->reload_actions))
7934 if (WARN_ON(!ops->reload_actions ||
7935 ops->reload_actions & BIT(DEVLINK_RELOAD_ACTION_UNSPEC) ||
7936 ops->reload_actions >= BIT(__DEVLINK_RELOAD_ACTION_MAX)))
7939 if (WARN_ON(ops->reload_limits & BIT(DEVLINK_RELOAD_LIMIT_UNSPEC) ||
7940 ops->reload_limits >= BIT(__DEVLINK_RELOAD_LIMIT_MAX)))
7943 for (i = 0; i < ARRAY_SIZE(devlink_reload_invalid_combinations); i++) {
7944 comb = &devlink_reload_invalid_combinations[i];
7945 if (ops->reload_actions == BIT(comb->action) &&
7946 ops->reload_limits == BIT(comb->limit))
7953 * devlink_alloc - Allocate new devlink instance resources
7956 * @priv_size: size of user private data
7958 * Allocate new devlink instance resources, including devlink index
7961 struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size)
7963 struct devlink *devlink;
7968 if (!devlink_reload_actions_valid(ops))
7971 devlink = kzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL);
7975 xa_init_flags(&devlink->snapshot_ids, XA_FLAGS_ALLOC);
7976 __devlink_net_set(devlink, &init_net);
7977 INIT_LIST_HEAD(&devlink->port_list);
7978 INIT_LIST_HEAD(&devlink->sb_list);
7979 INIT_LIST_HEAD_RCU(&devlink->dpipe_table_list);
7980 INIT_LIST_HEAD(&devlink->resource_list);
7981 INIT_LIST_HEAD(&devlink->param_list);
7982 INIT_LIST_HEAD(&devlink->region_list);
7983 INIT_LIST_HEAD(&devlink->reporter_list);
7984 INIT_LIST_HEAD(&devlink->trap_list);
7985 INIT_LIST_HEAD(&devlink->trap_group_list);
7986 INIT_LIST_HEAD(&devlink->trap_policer_list);
7987 mutex_init(&devlink->lock);
7988 mutex_init(&devlink->reporters_lock);
7991 EXPORT_SYMBOL_GPL(devlink_alloc);
7994 * devlink_register - Register devlink instance
7997 * @dev: parent device
7999 int devlink_register(struct devlink *devlink, struct device *dev)
8002 devlink->registered = true;
8003 mutex_lock(&devlink_mutex);
8004 list_add_tail(&devlink->list, &devlink_list);
8005 devlink_notify(devlink, DEVLINK_CMD_NEW);
8006 mutex_unlock(&devlink_mutex);
8009 EXPORT_SYMBOL_GPL(devlink_register);
8012 * devlink_unregister - Unregister devlink instance
8016 void devlink_unregister(struct devlink *devlink)
8018 mutex_lock(&devlink_mutex);
8019 WARN_ON(devlink_reload_supported(devlink->ops) &&
8020 devlink->reload_enabled);
8021 devlink_notify(devlink, DEVLINK_CMD_DEL);
8022 list_del(&devlink->list);
8023 mutex_unlock(&devlink_mutex);
8025 EXPORT_SYMBOL_GPL(devlink_unregister);
8028 * devlink_reload_enable - Enable reload of devlink instance
8032 * Should be called at end of device initialization
8033 * process when reload operation is supported.
8035 void devlink_reload_enable(struct devlink *devlink)
8037 mutex_lock(&devlink_mutex);
8038 devlink->reload_enabled = true;
8039 mutex_unlock(&devlink_mutex);
8041 EXPORT_SYMBOL_GPL(devlink_reload_enable);
8044 * devlink_reload_disable - Disable reload of devlink instance
8048 * Should be called at the beginning of device cleanup
8049 * process when reload operation is supported.
8051 void devlink_reload_disable(struct devlink *devlink)
8053 mutex_lock(&devlink_mutex);
8054 /* Mutex is taken which ensures that no reload operation is in
8055 * progress while setting up forbidded flag.
8057 devlink->reload_enabled = false;
8058 mutex_unlock(&devlink_mutex);
8060 EXPORT_SYMBOL_GPL(devlink_reload_disable);
8063 * devlink_free - Free devlink instance resources
8067 void devlink_free(struct devlink *devlink)
8069 mutex_destroy(&devlink->reporters_lock);
8070 mutex_destroy(&devlink->lock);
8071 WARN_ON(!list_empty(&devlink->trap_policer_list));
8072 WARN_ON(!list_empty(&devlink->trap_group_list));
8073 WARN_ON(!list_empty(&devlink->trap_list));
8074 WARN_ON(!list_empty(&devlink->reporter_list));
8075 WARN_ON(!list_empty(&devlink->region_list));
8076 WARN_ON(!list_empty(&devlink->param_list));
8077 WARN_ON(!list_empty(&devlink->resource_list));
8078 WARN_ON(!list_empty(&devlink->dpipe_table_list));
8079 WARN_ON(!list_empty(&devlink->sb_list));
8080 WARN_ON(!list_empty(&devlink->port_list));
8082 xa_destroy(&devlink->snapshot_ids);
8086 EXPORT_SYMBOL_GPL(devlink_free);
8088 static void devlink_port_type_warn(struct work_struct *work)
8090 WARN(true, "Type was not set for devlink port.");
8093 static bool devlink_port_type_should_warn(struct devlink_port *devlink_port)
8095 /* Ignore CPU and DSA flavours. */
8096 return devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_CPU &&
8097 devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_DSA &&
8098 devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_UNUSED;
8101 #define DEVLINK_PORT_TYPE_WARN_TIMEOUT (HZ * 3600)
8103 static void devlink_port_type_warn_schedule(struct devlink_port *devlink_port)
8105 if (!devlink_port_type_should_warn(devlink_port))
8107 /* Schedule a work to WARN in case driver does not set port
8108 * type within timeout.
8110 schedule_delayed_work(&devlink_port->type_warn_dw,
8111 DEVLINK_PORT_TYPE_WARN_TIMEOUT);
8114 static void devlink_port_type_warn_cancel(struct devlink_port *devlink_port)
8116 if (!devlink_port_type_should_warn(devlink_port))
8118 cancel_delayed_work_sync(&devlink_port->type_warn_dw);
8122 * devlink_port_register - Register devlink port
8125 * @devlink_port: devlink port
8126 * @port_index: driver-specific numerical identifier of the port
8128 * Register devlink port with provided port index. User can use
8129 * any indexing, even hw-related one. devlink_port structure
8130 * is convenient to be embedded inside user driver private structure.
8131 * Note that the caller should take care of zeroing the devlink_port
8134 int devlink_port_register(struct devlink *devlink,
8135 struct devlink_port *devlink_port,
8136 unsigned int port_index)
8138 mutex_lock(&devlink->lock);
8139 if (devlink_port_index_exists(devlink, port_index)) {
8140 mutex_unlock(&devlink->lock);
8143 devlink_port->devlink = devlink;
8144 devlink_port->index = port_index;
8145 devlink_port->registered = true;
8146 spin_lock_init(&devlink_port->type_lock);
8147 INIT_LIST_HEAD(&devlink_port->reporter_list);
8148 mutex_init(&devlink_port->reporters_lock);
8149 list_add_tail(&devlink_port->list, &devlink->port_list);
8150 INIT_LIST_HEAD(&devlink_port->param_list);
8151 INIT_LIST_HEAD(&devlink_port->region_list);
8152 mutex_unlock(&devlink->lock);
8153 INIT_DELAYED_WORK(&devlink_port->type_warn_dw, &devlink_port_type_warn);
8154 devlink_port_type_warn_schedule(devlink_port);
8155 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
8158 EXPORT_SYMBOL_GPL(devlink_port_register);
8161 * devlink_port_unregister - Unregister devlink port
8163 * @devlink_port: devlink port
8165 void devlink_port_unregister(struct devlink_port *devlink_port)
8167 struct devlink *devlink = devlink_port->devlink;
8169 devlink_port_type_warn_cancel(devlink_port);
8170 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
8171 mutex_lock(&devlink->lock);
8172 list_del(&devlink_port->list);
8173 mutex_unlock(&devlink->lock);
8174 WARN_ON(!list_empty(&devlink_port->reporter_list));
8175 WARN_ON(!list_empty(&devlink_port->region_list));
8176 mutex_destroy(&devlink_port->reporters_lock);
8178 EXPORT_SYMBOL_GPL(devlink_port_unregister);
8180 static void __devlink_port_type_set(struct devlink_port *devlink_port,
8181 enum devlink_port_type type,
8184 if (WARN_ON(!devlink_port->registered))
8186 devlink_port_type_warn_cancel(devlink_port);
8187 spin_lock_bh(&devlink_port->type_lock);
8188 devlink_port->type = type;
8189 devlink_port->type_dev = type_dev;
8190 spin_unlock_bh(&devlink_port->type_lock);
8191 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
8194 static void devlink_port_type_netdev_checks(struct devlink_port *devlink_port,
8195 struct net_device *netdev)
8197 const struct net_device_ops *ops = netdev->netdev_ops;
8199 /* If driver registers devlink port, it should set devlink port
8200 * attributes accordingly so the compat functions are called
8201 * and the original ops are not used.
8203 if (ops->ndo_get_phys_port_name) {
8204 /* Some drivers use the same set of ndos for netdevs
8205 * that have devlink_port registered and also for
8206 * those who don't. Make sure that ndo_get_phys_port_name
8207 * returns -EOPNOTSUPP here in case it is defined.
8210 char name[IFNAMSIZ];
8213 err = ops->ndo_get_phys_port_name(netdev, name, sizeof(name));
8214 WARN_ON(err != -EOPNOTSUPP);
8216 if (ops->ndo_get_port_parent_id) {
8217 /* Some drivers use the same set of ndos for netdevs
8218 * that have devlink_port registered and also for
8219 * those who don't. Make sure that ndo_get_port_parent_id
8220 * returns -EOPNOTSUPP here in case it is defined.
8223 struct netdev_phys_item_id ppid;
8226 err = ops->ndo_get_port_parent_id(netdev, &ppid);
8227 WARN_ON(err != -EOPNOTSUPP);
8232 * devlink_port_type_eth_set - Set port type to Ethernet
8234 * @devlink_port: devlink port
8235 * @netdev: related netdevice
8237 void devlink_port_type_eth_set(struct devlink_port *devlink_port,
8238 struct net_device *netdev)
8241 devlink_port_type_netdev_checks(devlink_port, netdev);
8243 dev_warn(devlink_port->devlink->dev,
8244 "devlink port type for port %d set to Ethernet without a software interface reference, device type not supported by the kernel?\n",
8245 devlink_port->index);
8247 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH, netdev);
8249 EXPORT_SYMBOL_GPL(devlink_port_type_eth_set);
8252 * devlink_port_type_ib_set - Set port type to InfiniBand
8254 * @devlink_port: devlink port
8255 * @ibdev: related IB device
8257 void devlink_port_type_ib_set(struct devlink_port *devlink_port,
8258 struct ib_device *ibdev)
8260 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_IB, ibdev);
8262 EXPORT_SYMBOL_GPL(devlink_port_type_ib_set);
8265 * devlink_port_type_clear - Clear port type
8267 * @devlink_port: devlink port
8269 void devlink_port_type_clear(struct devlink_port *devlink_port)
8271 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET, NULL);
8272 devlink_port_type_warn_schedule(devlink_port);
8274 EXPORT_SYMBOL_GPL(devlink_port_type_clear);
8276 static int __devlink_port_attrs_set(struct devlink_port *devlink_port,
8277 enum devlink_port_flavour flavour)
8279 struct devlink_port_attrs *attrs = &devlink_port->attrs;
8281 devlink_port->attrs_set = true;
8282 attrs->flavour = flavour;
8283 if (attrs->switch_id.id_len) {
8284 devlink_port->switch_port = true;
8285 if (WARN_ON(attrs->switch_id.id_len > MAX_PHYS_ITEM_ID_LEN))
8286 attrs->switch_id.id_len = MAX_PHYS_ITEM_ID_LEN;
8288 devlink_port->switch_port = false;
8294 * devlink_port_attrs_set - Set port attributes
8296 * @devlink_port: devlink port
8297 * @attrs: devlink port attrs
8299 void devlink_port_attrs_set(struct devlink_port *devlink_port,
8300 struct devlink_port_attrs *attrs)
8304 if (WARN_ON(devlink_port->registered))
8306 devlink_port->attrs = *attrs;
8307 ret = __devlink_port_attrs_set(devlink_port, attrs->flavour);
8310 WARN_ON(attrs->splittable && attrs->split);
8312 EXPORT_SYMBOL_GPL(devlink_port_attrs_set);
8315 * devlink_port_attrs_pci_pf_set - Set PCI PF port attributes
8317 * @devlink_port: devlink port
8318 * @controller: associated controller number for the devlink port instance
8319 * @pf: associated PF for the devlink port instance
8320 * @external: indicates if the port is for an external controller
8322 void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port, u32 controller,
8323 u16 pf, bool external)
8325 struct devlink_port_attrs *attrs = &devlink_port->attrs;
8328 if (WARN_ON(devlink_port->registered))
8330 ret = __devlink_port_attrs_set(devlink_port,
8331 DEVLINK_PORT_FLAVOUR_PCI_PF);
8334 attrs->pci_pf.controller = controller;
8335 attrs->pci_pf.pf = pf;
8336 attrs->pci_pf.external = external;
8338 EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_pf_set);
8341 * devlink_port_attrs_pci_vf_set - Set PCI VF port attributes
8343 * @devlink_port: devlink port
8344 * @controller: associated controller number for the devlink port instance
8345 * @pf: associated PF for the devlink port instance
8346 * @vf: associated VF of a PF for the devlink port instance
8347 * @external: indicates if the port is for an external controller
8349 void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port, u32 controller,
8350 u16 pf, u16 vf, bool external)
8352 struct devlink_port_attrs *attrs = &devlink_port->attrs;
8355 if (WARN_ON(devlink_port->registered))
8357 ret = __devlink_port_attrs_set(devlink_port,
8358 DEVLINK_PORT_FLAVOUR_PCI_VF);
8361 attrs->pci_vf.controller = controller;
8362 attrs->pci_vf.pf = pf;
8363 attrs->pci_vf.vf = vf;
8364 attrs->pci_vf.external = external;
8366 EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_vf_set);
8368 static int __devlink_port_phys_port_name_get(struct devlink_port *devlink_port,
8369 char *name, size_t len)
8371 struct devlink_port_attrs *attrs = &devlink_port->attrs;
8374 if (!devlink_port->attrs_set)
8377 switch (attrs->flavour) {
8378 case DEVLINK_PORT_FLAVOUR_PHYSICAL:
8379 case DEVLINK_PORT_FLAVOUR_VIRTUAL:
8381 n = snprintf(name, len, "p%u", attrs->phys.port_number);
8383 n = snprintf(name, len, "p%us%u",
8384 attrs->phys.port_number,
8385 attrs->phys.split_subport_number);
8387 case DEVLINK_PORT_FLAVOUR_CPU:
8388 case DEVLINK_PORT_FLAVOUR_DSA:
8389 case DEVLINK_PORT_FLAVOUR_UNUSED:
8390 /* As CPU and DSA ports do not have a netdevice associated
8391 * case should not ever happen.
8395 case DEVLINK_PORT_FLAVOUR_PCI_PF:
8396 if (attrs->pci_pf.external) {
8397 n = snprintf(name, len, "c%u", attrs->pci_pf.controller);
8403 n = snprintf(name, len, "pf%u", attrs->pci_pf.pf);
8405 case DEVLINK_PORT_FLAVOUR_PCI_VF:
8406 if (attrs->pci_vf.external) {
8407 n = snprintf(name, len, "c%u", attrs->pci_vf.controller);
8413 n = snprintf(name, len, "pf%uvf%u",
8414 attrs->pci_vf.pf, attrs->pci_vf.vf);
8424 int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
8425 u32 size, u16 ingress_pools_count,
8426 u16 egress_pools_count, u16 ingress_tc_count,
8427 u16 egress_tc_count)
8429 struct devlink_sb *devlink_sb;
8432 mutex_lock(&devlink->lock);
8433 if (devlink_sb_index_exists(devlink, sb_index)) {
8438 devlink_sb = kzalloc(sizeof(*devlink_sb), GFP_KERNEL);
8443 devlink_sb->index = sb_index;
8444 devlink_sb->size = size;
8445 devlink_sb->ingress_pools_count = ingress_pools_count;
8446 devlink_sb->egress_pools_count = egress_pools_count;
8447 devlink_sb->ingress_tc_count = ingress_tc_count;
8448 devlink_sb->egress_tc_count = egress_tc_count;
8449 list_add_tail(&devlink_sb->list, &devlink->sb_list);
8451 mutex_unlock(&devlink->lock);
8454 EXPORT_SYMBOL_GPL(devlink_sb_register);
8456 void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index)
8458 struct devlink_sb *devlink_sb;
8460 mutex_lock(&devlink->lock);
8461 devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
8462 WARN_ON(!devlink_sb);
8463 list_del(&devlink_sb->list);
8464 mutex_unlock(&devlink->lock);
8467 EXPORT_SYMBOL_GPL(devlink_sb_unregister);
8470 * devlink_dpipe_headers_register - register dpipe headers
8473 * @dpipe_headers: dpipe header array
8475 * Register the headers supported by hardware.
8477 int devlink_dpipe_headers_register(struct devlink *devlink,
8478 struct devlink_dpipe_headers *dpipe_headers)
8480 mutex_lock(&devlink->lock);
8481 devlink->dpipe_headers = dpipe_headers;
8482 mutex_unlock(&devlink->lock);
8485 EXPORT_SYMBOL_GPL(devlink_dpipe_headers_register);
8488 * devlink_dpipe_headers_unregister - unregister dpipe headers
8492 * Unregister the headers supported by hardware.
8494 void devlink_dpipe_headers_unregister(struct devlink *devlink)
8496 mutex_lock(&devlink->lock);
8497 devlink->dpipe_headers = NULL;
8498 mutex_unlock(&devlink->lock);
8500 EXPORT_SYMBOL_GPL(devlink_dpipe_headers_unregister);
8503 * devlink_dpipe_table_counter_enabled - check if counter allocation
8506 * @table_name: tables name
8508 * Used by driver to check if counter allocation is required.
8509 * After counter allocation is turned on the table entries
8510 * are updated to include counter statistics.
8512 * After that point on the driver must respect the counter
8513 * state so that each entry added to the table is added
8516 bool devlink_dpipe_table_counter_enabled(struct devlink *devlink,
8517 const char *table_name)
8519 struct devlink_dpipe_table *table;
8523 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
8524 table_name, devlink);
8527 enabled = table->counters_enabled;
8531 EXPORT_SYMBOL_GPL(devlink_dpipe_table_counter_enabled);
8534 * devlink_dpipe_table_register - register dpipe table
8537 * @table_name: table name
8538 * @table_ops: table ops
8540 * @counter_control_extern: external control for counters
8542 int devlink_dpipe_table_register(struct devlink *devlink,
8543 const char *table_name,
8544 struct devlink_dpipe_table_ops *table_ops,
8545 void *priv, bool counter_control_extern)
8547 struct devlink_dpipe_table *table;
8550 if (WARN_ON(!table_ops->size_get))
8553 mutex_lock(&devlink->lock);
8555 if (devlink_dpipe_table_find(&devlink->dpipe_table_list, table_name,
8561 table = kzalloc(sizeof(*table), GFP_KERNEL);
8567 table->name = table_name;
8568 table->table_ops = table_ops;
8570 table->counter_control_extern = counter_control_extern;
8572 list_add_tail_rcu(&table->list, &devlink->dpipe_table_list);
8574 mutex_unlock(&devlink->lock);
8577 EXPORT_SYMBOL_GPL(devlink_dpipe_table_register);
8580 * devlink_dpipe_table_unregister - unregister dpipe table
8583 * @table_name: table name
8585 void devlink_dpipe_table_unregister(struct devlink *devlink,
8586 const char *table_name)
8588 struct devlink_dpipe_table *table;
8590 mutex_lock(&devlink->lock);
8591 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
8592 table_name, devlink);
8595 list_del_rcu(&table->list);
8596 mutex_unlock(&devlink->lock);
8597 kfree_rcu(table, rcu);
8600 mutex_unlock(&devlink->lock);
8602 EXPORT_SYMBOL_GPL(devlink_dpipe_table_unregister);
8605 * devlink_resource_register - devlink resource register
8608 * @resource_name: resource's name
8609 * @resource_size: resource's size
8610 * @resource_id: resource's id
8611 * @parent_resource_id: resource's parent id
8612 * @size_params: size parameters
8614 int devlink_resource_register(struct devlink *devlink,
8615 const char *resource_name,
8618 u64 parent_resource_id,
8619 const struct devlink_resource_size_params *size_params)
8621 struct devlink_resource *resource;
8622 struct list_head *resource_list;
8626 top_hierarchy = parent_resource_id == DEVLINK_RESOURCE_ID_PARENT_TOP;
8628 mutex_lock(&devlink->lock);
8629 resource = devlink_resource_find(devlink, NULL, resource_id);
8635 resource = kzalloc(sizeof(*resource), GFP_KERNEL);
8641 if (top_hierarchy) {
8642 resource_list = &devlink->resource_list;
8644 struct devlink_resource *parent_resource;
8646 parent_resource = devlink_resource_find(devlink, NULL,
8647 parent_resource_id);
8648 if (parent_resource) {
8649 resource_list = &parent_resource->resource_list;
8650 resource->parent = parent_resource;
8658 resource->name = resource_name;
8659 resource->size = resource_size;
8660 resource->size_new = resource_size;
8661 resource->id = resource_id;
8662 resource->size_valid = true;
8663 memcpy(&resource->size_params, size_params,
8664 sizeof(resource->size_params));
8665 INIT_LIST_HEAD(&resource->resource_list);
8666 list_add_tail(&resource->list, resource_list);
8668 mutex_unlock(&devlink->lock);
8671 EXPORT_SYMBOL_GPL(devlink_resource_register);
8674 * devlink_resources_unregister - free all resources
8677 * @resource: resource
8679 void devlink_resources_unregister(struct devlink *devlink,
8680 struct devlink_resource *resource)
8682 struct devlink_resource *tmp, *child_resource;
8683 struct list_head *resource_list;
8686 resource_list = &resource->resource_list;
8688 resource_list = &devlink->resource_list;
8691 mutex_lock(&devlink->lock);
8693 list_for_each_entry_safe(child_resource, tmp, resource_list, list) {
8694 devlink_resources_unregister(devlink, child_resource);
8695 list_del(&child_resource->list);
8696 kfree(child_resource);
8700 mutex_unlock(&devlink->lock);
8702 EXPORT_SYMBOL_GPL(devlink_resources_unregister);
8705 * devlink_resource_size_get - get and update size
8708 * @resource_id: the requested resource id
8709 * @p_resource_size: ptr to update
8711 int devlink_resource_size_get(struct devlink *devlink,
8713 u64 *p_resource_size)
8715 struct devlink_resource *resource;
8718 mutex_lock(&devlink->lock);
8719 resource = devlink_resource_find(devlink, NULL, resource_id);
8724 *p_resource_size = resource->size_new;
8725 resource->size = resource->size_new;
8727 mutex_unlock(&devlink->lock);
8730 EXPORT_SYMBOL_GPL(devlink_resource_size_get);
8733 * devlink_dpipe_table_resource_set - set the resource id
8736 * @table_name: table name
8737 * @resource_id: resource id
8738 * @resource_units: number of resource's units consumed per table's entry
8740 int devlink_dpipe_table_resource_set(struct devlink *devlink,
8741 const char *table_name, u64 resource_id,
8744 struct devlink_dpipe_table *table;
8747 mutex_lock(&devlink->lock);
8748 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
8749 table_name, devlink);
8754 table->resource_id = resource_id;
8755 table->resource_units = resource_units;
8756 table->resource_valid = true;
8758 mutex_unlock(&devlink->lock);
8761 EXPORT_SYMBOL_GPL(devlink_dpipe_table_resource_set);
8764 * devlink_resource_occ_get_register - register occupancy getter
8767 * @resource_id: resource id
8768 * @occ_get: occupancy getter callback
8769 * @occ_get_priv: occupancy getter callback priv
8771 void devlink_resource_occ_get_register(struct devlink *devlink,
8773 devlink_resource_occ_get_t *occ_get,
8776 struct devlink_resource *resource;
8778 mutex_lock(&devlink->lock);
8779 resource = devlink_resource_find(devlink, NULL, resource_id);
8780 if (WARN_ON(!resource))
8782 WARN_ON(resource->occ_get);
8784 resource->occ_get = occ_get;
8785 resource->occ_get_priv = occ_get_priv;
8787 mutex_unlock(&devlink->lock);
8789 EXPORT_SYMBOL_GPL(devlink_resource_occ_get_register);
8792 * devlink_resource_occ_get_unregister - unregister occupancy getter
8795 * @resource_id: resource id
8797 void devlink_resource_occ_get_unregister(struct devlink *devlink,
8800 struct devlink_resource *resource;
8802 mutex_lock(&devlink->lock);
8803 resource = devlink_resource_find(devlink, NULL, resource_id);
8804 if (WARN_ON(!resource))
8806 WARN_ON(!resource->occ_get);
8808 resource->occ_get = NULL;
8809 resource->occ_get_priv = NULL;
8811 mutex_unlock(&devlink->lock);
8813 EXPORT_SYMBOL_GPL(devlink_resource_occ_get_unregister);
8815 static int devlink_param_verify(const struct devlink_param *param)
8817 if (!param || !param->name || !param->supported_cmodes)
8820 return devlink_param_generic_verify(param);
8822 return devlink_param_driver_verify(param);
8825 static int __devlink_params_register(struct devlink *devlink,
8826 unsigned int port_index,
8827 struct list_head *param_list,
8828 const struct devlink_param *params,
8829 size_t params_count,
8830 enum devlink_command reg_cmd,
8831 enum devlink_command unreg_cmd)
8833 const struct devlink_param *param = params;
8837 mutex_lock(&devlink->lock);
8838 for (i = 0; i < params_count; i++, param++) {
8839 err = devlink_param_verify(param);
8843 err = devlink_param_register_one(devlink, port_index,
8844 param_list, param, reg_cmd);
8849 mutex_unlock(&devlink->lock);
8855 for (param--; i > 0; i--, param--)
8856 devlink_param_unregister_one(devlink, port_index, param_list,
8859 mutex_unlock(&devlink->lock);
8863 static void __devlink_params_unregister(struct devlink *devlink,
8864 unsigned int port_index,
8865 struct list_head *param_list,
8866 const struct devlink_param *params,
8867 size_t params_count,
8868 enum devlink_command cmd)
8870 const struct devlink_param *param = params;
8873 mutex_lock(&devlink->lock);
8874 for (i = 0; i < params_count; i++, param++)
8875 devlink_param_unregister_one(devlink, 0, param_list, param,
8877 mutex_unlock(&devlink->lock);
8881 * devlink_params_register - register configuration parameters
8884 * @params: configuration parameters array
8885 * @params_count: number of parameters provided
8887 * Register the configuration parameters supported by the driver.
8889 int devlink_params_register(struct devlink *devlink,
8890 const struct devlink_param *params,
8891 size_t params_count)
8893 return __devlink_params_register(devlink, 0, &devlink->param_list,
8894 params, params_count,
8895 DEVLINK_CMD_PARAM_NEW,
8896 DEVLINK_CMD_PARAM_DEL);
8898 EXPORT_SYMBOL_GPL(devlink_params_register);
8901 * devlink_params_unregister - unregister configuration parameters
8903 * @params: configuration parameters to unregister
8904 * @params_count: number of parameters provided
8906 void devlink_params_unregister(struct devlink *devlink,
8907 const struct devlink_param *params,
8908 size_t params_count)
8910 return __devlink_params_unregister(devlink, 0, &devlink->param_list,
8911 params, params_count,
8912 DEVLINK_CMD_PARAM_DEL);
8914 EXPORT_SYMBOL_GPL(devlink_params_unregister);
8917 * devlink_params_publish - publish configuration parameters
8921 * Publish previously registered configuration parameters.
8923 void devlink_params_publish(struct devlink *devlink)
8925 struct devlink_param_item *param_item;
8927 list_for_each_entry(param_item, &devlink->param_list, list) {
8928 if (param_item->published)
8930 param_item->published = true;
8931 devlink_param_notify(devlink, 0, param_item,
8932 DEVLINK_CMD_PARAM_NEW);
8935 EXPORT_SYMBOL_GPL(devlink_params_publish);
8938 * devlink_params_unpublish - unpublish configuration parameters
8942 * Unpublish previously registered configuration parameters.
8944 void devlink_params_unpublish(struct devlink *devlink)
8946 struct devlink_param_item *param_item;
8948 list_for_each_entry(param_item, &devlink->param_list, list) {
8949 if (!param_item->published)
8951 param_item->published = false;
8952 devlink_param_notify(devlink, 0, param_item,
8953 DEVLINK_CMD_PARAM_DEL);
8956 EXPORT_SYMBOL_GPL(devlink_params_unpublish);
8959 * devlink_port_params_register - register port configuration parameters
8961 * @devlink_port: devlink port
8962 * @params: configuration parameters array
8963 * @params_count: number of parameters provided
8965 * Register the configuration parameters supported by the port.
8967 int devlink_port_params_register(struct devlink_port *devlink_port,
8968 const struct devlink_param *params,
8969 size_t params_count)
8971 return __devlink_params_register(devlink_port->devlink,
8972 devlink_port->index,
8973 &devlink_port->param_list, params,
8975 DEVLINK_CMD_PORT_PARAM_NEW,
8976 DEVLINK_CMD_PORT_PARAM_DEL);
8978 EXPORT_SYMBOL_GPL(devlink_port_params_register);
8981 * devlink_port_params_unregister - unregister port configuration
8984 * @devlink_port: devlink port
8985 * @params: configuration parameters array
8986 * @params_count: number of parameters provided
8988 void devlink_port_params_unregister(struct devlink_port *devlink_port,
8989 const struct devlink_param *params,
8990 size_t params_count)
8992 return __devlink_params_unregister(devlink_port->devlink,
8993 devlink_port->index,
8994 &devlink_port->param_list,
8995 params, params_count,
8996 DEVLINK_CMD_PORT_PARAM_DEL);
8998 EXPORT_SYMBOL_GPL(devlink_port_params_unregister);
9001 __devlink_param_driverinit_value_get(struct list_head *param_list, u32 param_id,
9002 union devlink_param_value *init_val)
9004 struct devlink_param_item *param_item;
9006 param_item = devlink_param_find_by_id(param_list, param_id);
9010 if (!param_item->driverinit_value_valid ||
9011 !devlink_param_cmode_is_supported(param_item->param,
9012 DEVLINK_PARAM_CMODE_DRIVERINIT))
9015 if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
9016 strcpy(init_val->vstr, param_item->driverinit_value.vstr);
9018 *init_val = param_item->driverinit_value;
9024 __devlink_param_driverinit_value_set(struct devlink *devlink,
9025 unsigned int port_index,
9026 struct list_head *param_list, u32 param_id,
9027 union devlink_param_value init_val,
9028 enum devlink_command cmd)
9030 struct devlink_param_item *param_item;
9032 param_item = devlink_param_find_by_id(param_list, param_id);
9036 if (!devlink_param_cmode_is_supported(param_item->param,
9037 DEVLINK_PARAM_CMODE_DRIVERINIT))
9040 if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
9041 strcpy(param_item->driverinit_value.vstr, init_val.vstr);
9043 param_item->driverinit_value = init_val;
9044 param_item->driverinit_value_valid = true;
9046 devlink_param_notify(devlink, port_index, param_item, cmd);
9051 * devlink_param_driverinit_value_get - get configuration parameter
9052 * value for driver initializing
9055 * @param_id: parameter ID
9056 * @init_val: value of parameter in driverinit configuration mode
9058 * This function should be used by the driver to get driverinit
9059 * configuration for initialization after reload command.
9061 int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
9062 union devlink_param_value *init_val)
9064 if (!devlink_reload_supported(devlink->ops))
9067 return __devlink_param_driverinit_value_get(&devlink->param_list,
9068 param_id, init_val);
9070 EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_get);
9073 * devlink_param_driverinit_value_set - set value of configuration
9074 * parameter for driverinit
9075 * configuration mode
9078 * @param_id: parameter ID
9079 * @init_val: value of parameter to set for driverinit configuration mode
9081 * This function should be used by the driver to set driverinit
9082 * configuration mode default value.
9084 int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
9085 union devlink_param_value init_val)
9087 return __devlink_param_driverinit_value_set(devlink, 0,
9088 &devlink->param_list,
9090 DEVLINK_CMD_PARAM_NEW);
9092 EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_set);
9095 * devlink_port_param_driverinit_value_get - get configuration parameter
9096 * value for driver initializing
9098 * @devlink_port: devlink_port
9099 * @param_id: parameter ID
9100 * @init_val: value of parameter in driverinit configuration mode
9102 * This function should be used by the driver to get driverinit
9103 * configuration for initialization after reload command.
9105 int devlink_port_param_driverinit_value_get(struct devlink_port *devlink_port,
9107 union devlink_param_value *init_val)
9109 struct devlink *devlink = devlink_port->devlink;
9111 if (!devlink_reload_supported(devlink->ops))
9114 return __devlink_param_driverinit_value_get(&devlink_port->param_list,
9115 param_id, init_val);
9117 EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_get);
9120 * devlink_port_param_driverinit_value_set - set value of configuration
9121 * parameter for driverinit
9122 * configuration mode
9124 * @devlink_port: devlink_port
9125 * @param_id: parameter ID
9126 * @init_val: value of parameter to set for driverinit configuration mode
9128 * This function should be used by the driver to set driverinit
9129 * configuration mode default value.
9131 int devlink_port_param_driverinit_value_set(struct devlink_port *devlink_port,
9133 union devlink_param_value init_val)
9135 return __devlink_param_driverinit_value_set(devlink_port->devlink,
9136 devlink_port->index,
9137 &devlink_port->param_list,
9139 DEVLINK_CMD_PORT_PARAM_NEW);
9141 EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_set);
9144 * devlink_param_value_changed - notify devlink on a parameter's value
9145 * change. Should be called by the driver
9146 * right after the change.
9149 * @param_id: parameter ID
9151 * This function should be used by the driver to notify devlink on value
9152 * change, excluding driverinit configuration mode.
9153 * For driverinit configuration mode driver should use the function
9155 void devlink_param_value_changed(struct devlink *devlink, u32 param_id)
9157 struct devlink_param_item *param_item;
9159 param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
9160 WARN_ON(!param_item);
9162 devlink_param_notify(devlink, 0, param_item, DEVLINK_CMD_PARAM_NEW);
9164 EXPORT_SYMBOL_GPL(devlink_param_value_changed);
9167 * devlink_port_param_value_changed - notify devlink on a parameter's value
9168 * change. Should be called by the driver
9169 * right after the change.
9171 * @devlink_port: devlink_port
9172 * @param_id: parameter ID
9174 * This function should be used by the driver to notify devlink on value
9175 * change, excluding driverinit configuration mode.
9176 * For driverinit configuration mode driver should use the function
9177 * devlink_port_param_driverinit_value_set() instead.
9179 void devlink_port_param_value_changed(struct devlink_port *devlink_port,
9182 struct devlink_param_item *param_item;
9184 param_item = devlink_param_find_by_id(&devlink_port->param_list,
9186 WARN_ON(!param_item);
9188 devlink_param_notify(devlink_port->devlink, devlink_port->index,
9189 param_item, DEVLINK_CMD_PORT_PARAM_NEW);
9191 EXPORT_SYMBOL_GPL(devlink_port_param_value_changed);
9194 * devlink_param_value_str_fill - Safely fill-up the string preventing
9195 * from overflow of the preallocated buffer
9197 * @dst_val: destination devlink_param_value
9198 * @src: source buffer
9200 void devlink_param_value_str_fill(union devlink_param_value *dst_val,
9205 len = strlcpy(dst_val->vstr, src, __DEVLINK_PARAM_MAX_STRING_VALUE);
9206 WARN_ON(len >= __DEVLINK_PARAM_MAX_STRING_VALUE);
9208 EXPORT_SYMBOL_GPL(devlink_param_value_str_fill);
9211 * devlink_region_create - create a new address region
9214 * @ops: region operations and name
9215 * @region_max_snapshots: Maximum supported number of snapshots for region
9216 * @region_size: size of region
9218 struct devlink_region *
9219 devlink_region_create(struct devlink *devlink,
9220 const struct devlink_region_ops *ops,
9221 u32 region_max_snapshots, u64 region_size)
9223 struct devlink_region *region;
9226 if (WARN_ON(!ops) || WARN_ON(!ops->destructor))
9227 return ERR_PTR(-EINVAL);
9229 mutex_lock(&devlink->lock);
9231 if (devlink_region_get_by_name(devlink, ops->name)) {
9236 region = kzalloc(sizeof(*region), GFP_KERNEL);
9242 region->devlink = devlink;
9243 region->max_snapshots = region_max_snapshots;
9245 region->size = region_size;
9246 INIT_LIST_HEAD(®ion->snapshot_list);
9247 list_add_tail(®ion->list, &devlink->region_list);
9248 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
9250 mutex_unlock(&devlink->lock);
9254 mutex_unlock(&devlink->lock);
9255 return ERR_PTR(err);
9257 EXPORT_SYMBOL_GPL(devlink_region_create);
9260 * devlink_port_region_create - create a new address region for a port
9262 * @port: devlink port
9263 * @ops: region operations and name
9264 * @region_max_snapshots: Maximum supported number of snapshots for region
9265 * @region_size: size of region
9267 struct devlink_region *
9268 devlink_port_region_create(struct devlink_port *port,
9269 const struct devlink_port_region_ops *ops,
9270 u32 region_max_snapshots, u64 region_size)
9272 struct devlink *devlink = port->devlink;
9273 struct devlink_region *region;
9276 if (WARN_ON(!ops) || WARN_ON(!ops->destructor))
9277 return ERR_PTR(-EINVAL);
9279 mutex_lock(&devlink->lock);
9281 if (devlink_port_region_get_by_name(port, ops->name)) {
9286 region = kzalloc(sizeof(*region), GFP_KERNEL);
9292 region->devlink = devlink;
9293 region->port = port;
9294 region->max_snapshots = region_max_snapshots;
9295 region->port_ops = ops;
9296 region->size = region_size;
9297 INIT_LIST_HEAD(®ion->snapshot_list);
9298 list_add_tail(®ion->list, &port->region_list);
9299 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
9301 mutex_unlock(&devlink->lock);
9305 mutex_unlock(&devlink->lock);
9306 return ERR_PTR(err);
9308 EXPORT_SYMBOL_GPL(devlink_port_region_create);
9311 * devlink_region_destroy - destroy address region
9313 * @region: devlink region to destroy
9315 void devlink_region_destroy(struct devlink_region *region)
9317 struct devlink *devlink = region->devlink;
9318 struct devlink_snapshot *snapshot, *ts;
9320 mutex_lock(&devlink->lock);
9322 /* Free all snapshots of region */
9323 list_for_each_entry_safe(snapshot, ts, ®ion->snapshot_list, list)
9324 devlink_region_snapshot_del(region, snapshot);
9326 list_del(®ion->list);
9328 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL);
9329 mutex_unlock(&devlink->lock);
9332 EXPORT_SYMBOL_GPL(devlink_region_destroy);
9335 * devlink_region_snapshot_id_get - get snapshot ID
9337 * This callback should be called when adding a new snapshot,
9338 * Driver should use the same id for multiple snapshots taken
9339 * on multiple regions at the same time/by the same trigger.
9341 * The caller of this function must use devlink_region_snapshot_id_put
9342 * when finished creating regions using this id.
9344 * Returns zero on success, or a negative error code on failure.
9347 * @id: storage to return id
9349 int devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id)
9353 mutex_lock(&devlink->lock);
9354 err = __devlink_region_snapshot_id_get(devlink, id);
9355 mutex_unlock(&devlink->lock);
9359 EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_get);
9362 * devlink_region_snapshot_id_put - put snapshot ID reference
9364 * This should be called by a driver after finishing creating snapshots
9365 * with an id. Doing so ensures that the ID can later be released in the
9366 * event that all snapshots using it have been destroyed.
9369 * @id: id to release reference on
9371 void devlink_region_snapshot_id_put(struct devlink *devlink, u32 id)
9373 mutex_lock(&devlink->lock);
9374 __devlink_snapshot_id_decrement(devlink, id);
9375 mutex_unlock(&devlink->lock);
9377 EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_put);
9380 * devlink_region_snapshot_create - create a new snapshot
9381 * This will add a new snapshot of a region. The snapshot
9382 * will be stored on the region struct and can be accessed
9383 * from devlink. This is useful for future analyses of snapshots.
9384 * Multiple snapshots can be created on a region.
9385 * The @snapshot_id should be obtained using the getter function.
9387 * @region: devlink region of the snapshot
9388 * @data: snapshot data
9389 * @snapshot_id: snapshot id to be created
9391 int devlink_region_snapshot_create(struct devlink_region *region,
9392 u8 *data, u32 snapshot_id)
9394 struct devlink *devlink = region->devlink;
9397 mutex_lock(&devlink->lock);
9398 err = __devlink_region_snapshot_create(region, data, snapshot_id);
9399 mutex_unlock(&devlink->lock);
9403 EXPORT_SYMBOL_GPL(devlink_region_snapshot_create);
9405 #define DEVLINK_TRAP(_id, _type) \
9407 .type = DEVLINK_TRAP_TYPE_##_type, \
9408 .id = DEVLINK_TRAP_GENERIC_ID_##_id, \
9409 .name = DEVLINK_TRAP_GENERIC_NAME_##_id, \
9412 static const struct devlink_trap devlink_trap_generic[] = {
9413 DEVLINK_TRAP(SMAC_MC, DROP),
9414 DEVLINK_TRAP(VLAN_TAG_MISMATCH, DROP),
9415 DEVLINK_TRAP(INGRESS_VLAN_FILTER, DROP),
9416 DEVLINK_TRAP(INGRESS_STP_FILTER, DROP),
9417 DEVLINK_TRAP(EMPTY_TX_LIST, DROP),
9418 DEVLINK_TRAP(PORT_LOOPBACK_FILTER, DROP),
9419 DEVLINK_TRAP(BLACKHOLE_ROUTE, DROP),
9420 DEVLINK_TRAP(TTL_ERROR, EXCEPTION),
9421 DEVLINK_TRAP(TAIL_DROP, DROP),
9422 DEVLINK_TRAP(NON_IP_PACKET, DROP),
9423 DEVLINK_TRAP(UC_DIP_MC_DMAC, DROP),
9424 DEVLINK_TRAP(DIP_LB, DROP),
9425 DEVLINK_TRAP(SIP_MC, DROP),
9426 DEVLINK_TRAP(SIP_LB, DROP),
9427 DEVLINK_TRAP(CORRUPTED_IP_HDR, DROP),
9428 DEVLINK_TRAP(IPV4_SIP_BC, DROP),
9429 DEVLINK_TRAP(IPV6_MC_DIP_RESERVED_SCOPE, DROP),
9430 DEVLINK_TRAP(IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE, DROP),
9431 DEVLINK_TRAP(MTU_ERROR, EXCEPTION),
9432 DEVLINK_TRAP(UNRESOLVED_NEIGH, EXCEPTION),
9433 DEVLINK_TRAP(RPF, EXCEPTION),
9434 DEVLINK_TRAP(REJECT_ROUTE, EXCEPTION),
9435 DEVLINK_TRAP(IPV4_LPM_UNICAST_MISS, EXCEPTION),
9436 DEVLINK_TRAP(IPV6_LPM_UNICAST_MISS, EXCEPTION),
9437 DEVLINK_TRAP(NON_ROUTABLE, DROP),
9438 DEVLINK_TRAP(DECAP_ERROR, EXCEPTION),
9439 DEVLINK_TRAP(OVERLAY_SMAC_MC, DROP),
9440 DEVLINK_TRAP(INGRESS_FLOW_ACTION_DROP, DROP),
9441 DEVLINK_TRAP(EGRESS_FLOW_ACTION_DROP, DROP),
9442 DEVLINK_TRAP(STP, CONTROL),
9443 DEVLINK_TRAP(LACP, CONTROL),
9444 DEVLINK_TRAP(LLDP, CONTROL),
9445 DEVLINK_TRAP(IGMP_QUERY, CONTROL),
9446 DEVLINK_TRAP(IGMP_V1_REPORT, CONTROL),
9447 DEVLINK_TRAP(IGMP_V2_REPORT, CONTROL),
9448 DEVLINK_TRAP(IGMP_V3_REPORT, CONTROL),
9449 DEVLINK_TRAP(IGMP_V2_LEAVE, CONTROL),
9450 DEVLINK_TRAP(MLD_QUERY, CONTROL),
9451 DEVLINK_TRAP(MLD_V1_REPORT, CONTROL),
9452 DEVLINK_TRAP(MLD_V2_REPORT, CONTROL),
9453 DEVLINK_TRAP(MLD_V1_DONE, CONTROL),
9454 DEVLINK_TRAP(IPV4_DHCP, CONTROL),
9455 DEVLINK_TRAP(IPV6_DHCP, CONTROL),
9456 DEVLINK_TRAP(ARP_REQUEST, CONTROL),
9457 DEVLINK_TRAP(ARP_RESPONSE, CONTROL),
9458 DEVLINK_TRAP(ARP_OVERLAY, CONTROL),
9459 DEVLINK_TRAP(IPV6_NEIGH_SOLICIT, CONTROL),
9460 DEVLINK_TRAP(IPV6_NEIGH_ADVERT, CONTROL),
9461 DEVLINK_TRAP(IPV4_BFD, CONTROL),
9462 DEVLINK_TRAP(IPV6_BFD, CONTROL),
9463 DEVLINK_TRAP(IPV4_OSPF, CONTROL),
9464 DEVLINK_TRAP(IPV6_OSPF, CONTROL),
9465 DEVLINK_TRAP(IPV4_BGP, CONTROL),
9466 DEVLINK_TRAP(IPV6_BGP, CONTROL),
9467 DEVLINK_TRAP(IPV4_VRRP, CONTROL),
9468 DEVLINK_TRAP(IPV6_VRRP, CONTROL),
9469 DEVLINK_TRAP(IPV4_PIM, CONTROL),
9470 DEVLINK_TRAP(IPV6_PIM, CONTROL),
9471 DEVLINK_TRAP(UC_LB, CONTROL),
9472 DEVLINK_TRAP(LOCAL_ROUTE, CONTROL),
9473 DEVLINK_TRAP(EXTERNAL_ROUTE, CONTROL),
9474 DEVLINK_TRAP(IPV6_UC_DIP_LINK_LOCAL_SCOPE, CONTROL),
9475 DEVLINK_TRAP(IPV6_DIP_ALL_NODES, CONTROL),
9476 DEVLINK_TRAP(IPV6_DIP_ALL_ROUTERS, CONTROL),
9477 DEVLINK_TRAP(IPV6_ROUTER_SOLICIT, CONTROL),
9478 DEVLINK_TRAP(IPV6_ROUTER_ADVERT, CONTROL),
9479 DEVLINK_TRAP(IPV6_REDIRECT, CONTROL),
9480 DEVLINK_TRAP(IPV4_ROUTER_ALERT, CONTROL),
9481 DEVLINK_TRAP(IPV6_ROUTER_ALERT, CONTROL),
9482 DEVLINK_TRAP(PTP_EVENT, CONTROL),
9483 DEVLINK_TRAP(PTP_GENERAL, CONTROL),
9484 DEVLINK_TRAP(FLOW_ACTION_SAMPLE, CONTROL),
9485 DEVLINK_TRAP(FLOW_ACTION_TRAP, CONTROL),
9486 DEVLINK_TRAP(EARLY_DROP, DROP),
9487 DEVLINK_TRAP(VXLAN_PARSING, DROP),
9488 DEVLINK_TRAP(LLC_SNAP_PARSING, DROP),
9489 DEVLINK_TRAP(VLAN_PARSING, DROP),
9490 DEVLINK_TRAP(PPPOE_PPP_PARSING, DROP),
9491 DEVLINK_TRAP(MPLS_PARSING, DROP),
9492 DEVLINK_TRAP(ARP_PARSING, DROP),
9493 DEVLINK_TRAP(IP_1_PARSING, DROP),
9494 DEVLINK_TRAP(IP_N_PARSING, DROP),
9495 DEVLINK_TRAP(GRE_PARSING, DROP),
9496 DEVLINK_TRAP(UDP_PARSING, DROP),
9497 DEVLINK_TRAP(TCP_PARSING, DROP),
9498 DEVLINK_TRAP(IPSEC_PARSING, DROP),
9499 DEVLINK_TRAP(SCTP_PARSING, DROP),
9500 DEVLINK_TRAP(DCCP_PARSING, DROP),
9501 DEVLINK_TRAP(GTP_PARSING, DROP),
9502 DEVLINK_TRAP(ESP_PARSING, DROP),
9505 #define DEVLINK_TRAP_GROUP(_id) \
9507 .id = DEVLINK_TRAP_GROUP_GENERIC_ID_##_id, \
9508 .name = DEVLINK_TRAP_GROUP_GENERIC_NAME_##_id, \
9511 static const struct devlink_trap_group devlink_trap_group_generic[] = {
9512 DEVLINK_TRAP_GROUP(L2_DROPS),
9513 DEVLINK_TRAP_GROUP(L3_DROPS),
9514 DEVLINK_TRAP_GROUP(L3_EXCEPTIONS),
9515 DEVLINK_TRAP_GROUP(BUFFER_DROPS),
9516 DEVLINK_TRAP_GROUP(TUNNEL_DROPS),
9517 DEVLINK_TRAP_GROUP(ACL_DROPS),
9518 DEVLINK_TRAP_GROUP(STP),
9519 DEVLINK_TRAP_GROUP(LACP),
9520 DEVLINK_TRAP_GROUP(LLDP),
9521 DEVLINK_TRAP_GROUP(MC_SNOOPING),
9522 DEVLINK_TRAP_GROUP(DHCP),
9523 DEVLINK_TRAP_GROUP(NEIGH_DISCOVERY),
9524 DEVLINK_TRAP_GROUP(BFD),
9525 DEVLINK_TRAP_GROUP(OSPF),
9526 DEVLINK_TRAP_GROUP(BGP),
9527 DEVLINK_TRAP_GROUP(VRRP),
9528 DEVLINK_TRAP_GROUP(PIM),
9529 DEVLINK_TRAP_GROUP(UC_LB),
9530 DEVLINK_TRAP_GROUP(LOCAL_DELIVERY),
9531 DEVLINK_TRAP_GROUP(EXTERNAL_DELIVERY),
9532 DEVLINK_TRAP_GROUP(IPV6),
9533 DEVLINK_TRAP_GROUP(PTP_EVENT),
9534 DEVLINK_TRAP_GROUP(PTP_GENERAL),
9535 DEVLINK_TRAP_GROUP(ACL_SAMPLE),
9536 DEVLINK_TRAP_GROUP(ACL_TRAP),
9537 DEVLINK_TRAP_GROUP(PARSER_ERROR_DROPS),
9540 static int devlink_trap_generic_verify(const struct devlink_trap *trap)
9542 if (trap->id > DEVLINK_TRAP_GENERIC_ID_MAX)
9545 if (strcmp(trap->name, devlink_trap_generic[trap->id].name))
9548 if (trap->type != devlink_trap_generic[trap->id].type)
9554 static int devlink_trap_driver_verify(const struct devlink_trap *trap)
9558 if (trap->id <= DEVLINK_TRAP_GENERIC_ID_MAX)
9561 for (i = 0; i < ARRAY_SIZE(devlink_trap_generic); i++) {
9562 if (!strcmp(trap->name, devlink_trap_generic[i].name))
9569 static int devlink_trap_verify(const struct devlink_trap *trap)
9571 if (!trap || !trap->name)
9575 return devlink_trap_generic_verify(trap);
9577 return devlink_trap_driver_verify(trap);
9581 devlink_trap_group_generic_verify(const struct devlink_trap_group *group)
9583 if (group->id > DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
9586 if (strcmp(group->name, devlink_trap_group_generic[group->id].name))
9593 devlink_trap_group_driver_verify(const struct devlink_trap_group *group)
9597 if (group->id <= DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
9600 for (i = 0; i < ARRAY_SIZE(devlink_trap_group_generic); i++) {
9601 if (!strcmp(group->name, devlink_trap_group_generic[i].name))
9608 static int devlink_trap_group_verify(const struct devlink_trap_group *group)
9611 return devlink_trap_group_generic_verify(group);
9613 return devlink_trap_group_driver_verify(group);
9617 devlink_trap_group_notify(struct devlink *devlink,
9618 const struct devlink_trap_group_item *group_item,
9619 enum devlink_command cmd)
9621 struct sk_buff *msg;
9624 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_GROUP_NEW &&
9625 cmd != DEVLINK_CMD_TRAP_GROUP_DEL);
9627 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9631 err = devlink_nl_trap_group_fill(msg, devlink, group_item, cmd, 0, 0,
9638 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
9639 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
9643 devlink_trap_item_group_link(struct devlink *devlink,
9644 struct devlink_trap_item *trap_item)
9646 u16 group_id = trap_item->trap->init_group_id;
9647 struct devlink_trap_group_item *group_item;
9649 group_item = devlink_trap_group_item_lookup_by_id(devlink, group_id);
9650 if (WARN_ON_ONCE(!group_item))
9653 trap_item->group_item = group_item;
9658 static void devlink_trap_notify(struct devlink *devlink,
9659 const struct devlink_trap_item *trap_item,
9660 enum devlink_command cmd)
9662 struct sk_buff *msg;
9665 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_NEW &&
9666 cmd != DEVLINK_CMD_TRAP_DEL);
9668 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9672 err = devlink_nl_trap_fill(msg, devlink, trap_item, cmd, 0, 0, 0);
9678 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
9679 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
9683 devlink_trap_register(struct devlink *devlink,
9684 const struct devlink_trap *trap, void *priv)
9686 struct devlink_trap_item *trap_item;
9689 if (devlink_trap_item_lookup(devlink, trap->name))
9692 trap_item = kzalloc(sizeof(*trap_item), GFP_KERNEL);
9696 trap_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
9697 if (!trap_item->stats) {
9699 goto err_stats_alloc;
9702 trap_item->trap = trap;
9703 trap_item->action = trap->init_action;
9704 trap_item->priv = priv;
9706 err = devlink_trap_item_group_link(devlink, trap_item);
9708 goto err_group_link;
9710 err = devlink->ops->trap_init(devlink, trap, trap_item);
9714 list_add_tail(&trap_item->list, &devlink->trap_list);
9715 devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_NEW);
9721 free_percpu(trap_item->stats);
9727 static void devlink_trap_unregister(struct devlink *devlink,
9728 const struct devlink_trap *trap)
9730 struct devlink_trap_item *trap_item;
9732 trap_item = devlink_trap_item_lookup(devlink, trap->name);
9733 if (WARN_ON_ONCE(!trap_item))
9736 devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_DEL);
9737 list_del(&trap_item->list);
9738 if (devlink->ops->trap_fini)
9739 devlink->ops->trap_fini(devlink, trap, trap_item);
9740 free_percpu(trap_item->stats);
9744 static void devlink_trap_disable(struct devlink *devlink,
9745 const struct devlink_trap *trap)
9747 struct devlink_trap_item *trap_item;
9749 trap_item = devlink_trap_item_lookup(devlink, trap->name);
9750 if (WARN_ON_ONCE(!trap_item))
9753 devlink->ops->trap_action_set(devlink, trap, DEVLINK_TRAP_ACTION_DROP,
9755 trap_item->action = DEVLINK_TRAP_ACTION_DROP;
9759 * devlink_traps_register - Register packet traps with devlink.
9760 * @devlink: devlink.
9761 * @traps: Packet traps.
9762 * @traps_count: Count of provided packet traps.
9763 * @priv: Driver private information.
9765 * Return: Non-zero value on failure.
9767 int devlink_traps_register(struct devlink *devlink,
9768 const struct devlink_trap *traps,
9769 size_t traps_count, void *priv)
9773 if (!devlink->ops->trap_init || !devlink->ops->trap_action_set)
9776 mutex_lock(&devlink->lock);
9777 for (i = 0; i < traps_count; i++) {
9778 const struct devlink_trap *trap = &traps[i];
9780 err = devlink_trap_verify(trap);
9782 goto err_trap_verify;
9784 err = devlink_trap_register(devlink, trap, priv);
9786 goto err_trap_register;
9788 mutex_unlock(&devlink->lock);
9794 for (i--; i >= 0; i--)
9795 devlink_trap_unregister(devlink, &traps[i]);
9796 mutex_unlock(&devlink->lock);
9799 EXPORT_SYMBOL_GPL(devlink_traps_register);
9802 * devlink_traps_unregister - Unregister packet traps from devlink.
9803 * @devlink: devlink.
9804 * @traps: Packet traps.
9805 * @traps_count: Count of provided packet traps.
9807 void devlink_traps_unregister(struct devlink *devlink,
9808 const struct devlink_trap *traps,
9813 mutex_lock(&devlink->lock);
9814 /* Make sure we do not have any packets in-flight while unregistering
9815 * traps by disabling all of them and waiting for a grace period.
9817 for (i = traps_count - 1; i >= 0; i--)
9818 devlink_trap_disable(devlink, &traps[i]);
9820 for (i = traps_count - 1; i >= 0; i--)
9821 devlink_trap_unregister(devlink, &traps[i]);
9822 mutex_unlock(&devlink->lock);
9824 EXPORT_SYMBOL_GPL(devlink_traps_unregister);
9827 devlink_trap_stats_update(struct devlink_stats __percpu *trap_stats,
9830 struct devlink_stats *stats;
9832 stats = this_cpu_ptr(trap_stats);
9833 u64_stats_update_begin(&stats->syncp);
9834 stats->rx_bytes += skb_len;
9835 stats->rx_packets++;
9836 u64_stats_update_end(&stats->syncp);
9840 devlink_trap_report_metadata_set(struct devlink_trap_metadata *metadata,
9841 const struct devlink_trap_item *trap_item,
9842 struct devlink_port *in_devlink_port,
9843 const struct flow_action_cookie *fa_cookie)
9845 metadata->trap_name = trap_item->trap->name;
9846 metadata->trap_group_name = trap_item->group_item->group->name;
9847 metadata->fa_cookie = fa_cookie;
9848 metadata->trap_type = trap_item->trap->type;
9850 spin_lock(&in_devlink_port->type_lock);
9851 if (in_devlink_port->type == DEVLINK_PORT_TYPE_ETH)
9852 metadata->input_dev = in_devlink_port->type_dev;
9853 spin_unlock(&in_devlink_port->type_lock);
9857 * devlink_trap_report - Report trapped packet to drop monitor.
9858 * @devlink: devlink.
9859 * @skb: Trapped packet.
9860 * @trap_ctx: Trap context.
9861 * @in_devlink_port: Input devlink port.
9862 * @fa_cookie: Flow action cookie. Could be NULL.
9864 void devlink_trap_report(struct devlink *devlink, struct sk_buff *skb,
9865 void *trap_ctx, struct devlink_port *in_devlink_port,
9866 const struct flow_action_cookie *fa_cookie)
9869 struct devlink_trap_item *trap_item = trap_ctx;
9871 devlink_trap_stats_update(trap_item->stats, skb->len);
9872 devlink_trap_stats_update(trap_item->group_item->stats, skb->len);
9874 if (trace_devlink_trap_report_enabled()) {
9875 struct devlink_trap_metadata metadata = {};
9877 devlink_trap_report_metadata_set(&metadata, trap_item,
9878 in_devlink_port, fa_cookie);
9879 trace_devlink_trap_report(devlink, skb, &metadata);
9882 EXPORT_SYMBOL_GPL(devlink_trap_report);
9885 * devlink_trap_ctx_priv - Trap context to driver private information.
9886 * @trap_ctx: Trap context.
9888 * Return: Driver private information passed during registration.
9890 void *devlink_trap_ctx_priv(void *trap_ctx)
9892 struct devlink_trap_item *trap_item = trap_ctx;
9894 return trap_item->priv;
9896 EXPORT_SYMBOL_GPL(devlink_trap_ctx_priv);
9899 devlink_trap_group_item_policer_link(struct devlink *devlink,
9900 struct devlink_trap_group_item *group_item)
9902 u32 policer_id = group_item->group->init_policer_id;
9903 struct devlink_trap_policer_item *policer_item;
9905 if (policer_id == 0)
9908 policer_item = devlink_trap_policer_item_lookup(devlink, policer_id);
9909 if (WARN_ON_ONCE(!policer_item))
9912 group_item->policer_item = policer_item;
9918 devlink_trap_group_register(struct devlink *devlink,
9919 const struct devlink_trap_group *group)
9921 struct devlink_trap_group_item *group_item;
9924 if (devlink_trap_group_item_lookup(devlink, group->name))
9927 group_item = kzalloc(sizeof(*group_item), GFP_KERNEL);
9931 group_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
9932 if (!group_item->stats) {
9934 goto err_stats_alloc;
9937 group_item->group = group;
9939 err = devlink_trap_group_item_policer_link(devlink, group_item);
9941 goto err_policer_link;
9943 if (devlink->ops->trap_group_init) {
9944 err = devlink->ops->trap_group_init(devlink, group);
9946 goto err_group_init;
9949 list_add_tail(&group_item->list, &devlink->trap_group_list);
9950 devlink_trap_group_notify(devlink, group_item,
9951 DEVLINK_CMD_TRAP_GROUP_NEW);
9957 free_percpu(group_item->stats);
9964 devlink_trap_group_unregister(struct devlink *devlink,
9965 const struct devlink_trap_group *group)
9967 struct devlink_trap_group_item *group_item;
9969 group_item = devlink_trap_group_item_lookup(devlink, group->name);
9970 if (WARN_ON_ONCE(!group_item))
9973 devlink_trap_group_notify(devlink, group_item,
9974 DEVLINK_CMD_TRAP_GROUP_DEL);
9975 list_del(&group_item->list);
9976 free_percpu(group_item->stats);
9981 * devlink_trap_groups_register - Register packet trap groups with devlink.
9982 * @devlink: devlink.
9983 * @groups: Packet trap groups.
9984 * @groups_count: Count of provided packet trap groups.
9986 * Return: Non-zero value on failure.
9988 int devlink_trap_groups_register(struct devlink *devlink,
9989 const struct devlink_trap_group *groups,
9990 size_t groups_count)
9994 mutex_lock(&devlink->lock);
9995 for (i = 0; i < groups_count; i++) {
9996 const struct devlink_trap_group *group = &groups[i];
9998 err = devlink_trap_group_verify(group);
10000 goto err_trap_group_verify;
10002 err = devlink_trap_group_register(devlink, group);
10004 goto err_trap_group_register;
10006 mutex_unlock(&devlink->lock);
10010 err_trap_group_register:
10011 err_trap_group_verify:
10012 for (i--; i >= 0; i--)
10013 devlink_trap_group_unregister(devlink, &groups[i]);
10014 mutex_unlock(&devlink->lock);
10017 EXPORT_SYMBOL_GPL(devlink_trap_groups_register);
10020 * devlink_trap_groups_unregister - Unregister packet trap groups from devlink.
10021 * @devlink: devlink.
10022 * @groups: Packet trap groups.
10023 * @groups_count: Count of provided packet trap groups.
10025 void devlink_trap_groups_unregister(struct devlink *devlink,
10026 const struct devlink_trap_group *groups,
10027 size_t groups_count)
10031 mutex_lock(&devlink->lock);
10032 for (i = groups_count - 1; i >= 0; i--)
10033 devlink_trap_group_unregister(devlink, &groups[i]);
10034 mutex_unlock(&devlink->lock);
10036 EXPORT_SYMBOL_GPL(devlink_trap_groups_unregister);
10039 devlink_trap_policer_notify(struct devlink *devlink,
10040 const struct devlink_trap_policer_item *policer_item,
10041 enum devlink_command cmd)
10043 struct sk_buff *msg;
10046 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_POLICER_NEW &&
10047 cmd != DEVLINK_CMD_TRAP_POLICER_DEL);
10049 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10053 err = devlink_nl_trap_policer_fill(msg, devlink, policer_item, cmd, 0,
10060 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
10061 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
10065 devlink_trap_policer_register(struct devlink *devlink,
10066 const struct devlink_trap_policer *policer)
10068 struct devlink_trap_policer_item *policer_item;
10071 if (devlink_trap_policer_item_lookup(devlink, policer->id))
10074 policer_item = kzalloc(sizeof(*policer_item), GFP_KERNEL);
10078 policer_item->policer = policer;
10079 policer_item->rate = policer->init_rate;
10080 policer_item->burst = policer->init_burst;
10082 if (devlink->ops->trap_policer_init) {
10083 err = devlink->ops->trap_policer_init(devlink, policer);
10085 goto err_policer_init;
10088 list_add_tail(&policer_item->list, &devlink->trap_policer_list);
10089 devlink_trap_policer_notify(devlink, policer_item,
10090 DEVLINK_CMD_TRAP_POLICER_NEW);
10095 kfree(policer_item);
10100 devlink_trap_policer_unregister(struct devlink *devlink,
10101 const struct devlink_trap_policer *policer)
10103 struct devlink_trap_policer_item *policer_item;
10105 policer_item = devlink_trap_policer_item_lookup(devlink, policer->id);
10106 if (WARN_ON_ONCE(!policer_item))
10109 devlink_trap_policer_notify(devlink, policer_item,
10110 DEVLINK_CMD_TRAP_POLICER_DEL);
10111 list_del(&policer_item->list);
10112 if (devlink->ops->trap_policer_fini)
10113 devlink->ops->trap_policer_fini(devlink, policer);
10114 kfree(policer_item);
10118 * devlink_trap_policers_register - Register packet trap policers with devlink.
10119 * @devlink: devlink.
10120 * @policers: Packet trap policers.
10121 * @policers_count: Count of provided packet trap policers.
10123 * Return: Non-zero value on failure.
10126 devlink_trap_policers_register(struct devlink *devlink,
10127 const struct devlink_trap_policer *policers,
10128 size_t policers_count)
10132 mutex_lock(&devlink->lock);
10133 for (i = 0; i < policers_count; i++) {
10134 const struct devlink_trap_policer *policer = &policers[i];
10136 if (WARN_ON(policer->id == 0 ||
10137 policer->max_rate < policer->min_rate ||
10138 policer->max_burst < policer->min_burst)) {
10140 goto err_trap_policer_verify;
10143 err = devlink_trap_policer_register(devlink, policer);
10145 goto err_trap_policer_register;
10147 mutex_unlock(&devlink->lock);
10151 err_trap_policer_register:
10152 err_trap_policer_verify:
10153 for (i--; i >= 0; i--)
10154 devlink_trap_policer_unregister(devlink, &policers[i]);
10155 mutex_unlock(&devlink->lock);
10158 EXPORT_SYMBOL_GPL(devlink_trap_policers_register);
10161 * devlink_trap_policers_unregister - Unregister packet trap policers from devlink.
10162 * @devlink: devlink.
10163 * @policers: Packet trap policers.
10164 * @policers_count: Count of provided packet trap policers.
10167 devlink_trap_policers_unregister(struct devlink *devlink,
10168 const struct devlink_trap_policer *policers,
10169 size_t policers_count)
10173 mutex_lock(&devlink->lock);
10174 for (i = policers_count - 1; i >= 0; i--)
10175 devlink_trap_policer_unregister(devlink, &policers[i]);
10176 mutex_unlock(&devlink->lock);
10178 EXPORT_SYMBOL_GPL(devlink_trap_policers_unregister);
10180 static void __devlink_compat_running_version(struct devlink *devlink,
10181 char *buf, size_t len)
10183 const struct nlattr *nlattr;
10184 struct devlink_info_req req;
10185 struct sk_buff *msg;
10188 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10193 err = devlink->ops->info_get(devlink, &req, NULL);
10197 nla_for_each_attr(nlattr, (void *)msg->data, msg->len, rem) {
10198 const struct nlattr *kv;
10201 if (nla_type(nlattr) != DEVLINK_ATTR_INFO_VERSION_RUNNING)
10204 nla_for_each_nested(kv, nlattr, rem_kv) {
10205 if (nla_type(kv) != DEVLINK_ATTR_INFO_VERSION_VALUE)
10208 strlcat(buf, nla_data(kv), len);
10209 strlcat(buf, " ", len);
10216 void devlink_compat_running_version(struct net_device *dev,
10217 char *buf, size_t len)
10219 struct devlink *devlink;
10224 devlink = netdev_to_devlink(dev);
10225 if (!devlink || !devlink->ops->info_get)
10228 mutex_lock(&devlink->lock);
10229 __devlink_compat_running_version(devlink, buf, len);
10230 mutex_unlock(&devlink->lock);
10237 int devlink_compat_flash_update(struct net_device *dev, const char *file_name)
10239 struct devlink_flash_update_params params = {};
10240 struct devlink *devlink;
10246 devlink = netdev_to_devlink(dev);
10247 if (!devlink || !devlink->ops->flash_update) {
10252 params.file_name = file_name;
10254 mutex_lock(&devlink->lock);
10255 ret = devlink->ops->flash_update(devlink, ¶ms, NULL);
10256 mutex_unlock(&devlink->lock);
10265 int devlink_compat_phys_port_name_get(struct net_device *dev,
10266 char *name, size_t len)
10268 struct devlink_port *devlink_port;
10270 /* RTNL mutex is held here which ensures that devlink_port
10271 * instance cannot disappear in the middle. No need to take
10272 * any devlink lock as only permanent values are accessed.
10276 devlink_port = netdev_to_devlink_port(dev);
10278 return -EOPNOTSUPP;
10280 return __devlink_port_phys_port_name_get(devlink_port, name, len);
10283 int devlink_compat_switch_id_get(struct net_device *dev,
10284 struct netdev_phys_item_id *ppid)
10286 struct devlink_port *devlink_port;
10288 /* Caller must hold RTNL mutex or reference to dev, which ensures that
10289 * devlink_port instance cannot disappear in the middle. No need to take
10290 * any devlink lock as only permanent values are accessed.
10292 devlink_port = netdev_to_devlink_port(dev);
10293 if (!devlink_port || !devlink_port->switch_port)
10294 return -EOPNOTSUPP;
10296 memcpy(ppid, &devlink_port->attrs.switch_id, sizeof(*ppid));
10301 static void __net_exit devlink_pernet_pre_exit(struct net *net)
10303 struct devlink *devlink;
10304 u32 actions_performed;
10307 /* In case network namespace is getting destroyed, reload
10308 * all devlink instances from this namespace into init_net.
10310 mutex_lock(&devlink_mutex);
10311 list_for_each_entry(devlink, &devlink_list, list) {
10312 if (net_eq(devlink_net(devlink), net)) {
10313 if (WARN_ON(!devlink_reload_supported(devlink->ops)))
10315 err = devlink_reload(devlink, &init_net,
10316 DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
10317 DEVLINK_RELOAD_LIMIT_UNSPEC,
10318 &actions_performed, NULL);
10319 if (err && err != -EOPNOTSUPP)
10320 pr_warn("Failed to reload devlink instance into init_net\n");
10323 mutex_unlock(&devlink_mutex);
10326 static struct pernet_operations devlink_pernet_ops __net_initdata = {
10327 .pre_exit = devlink_pernet_pre_exit,
10330 static int __init devlink_init(void)
10334 err = genl_register_family(&devlink_nl_family);
10337 err = register_pernet_subsys(&devlink_pernet_ops);
10344 subsys_initcall(devlink_init);