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 },
90 [DEVLINK_PORT_FN_ATTR_STATE] =
91 NLA_POLICY_RANGE(NLA_U8, DEVLINK_PORT_FN_STATE_INACTIVE,
92 DEVLINK_PORT_FN_STATE_ACTIVE),
95 static LIST_HEAD(devlink_list);
99 * An overall lock guarding every operation coming from userspace.
100 * It also guards devlink devices list and it is taken when
101 * driver registers/unregisters it.
103 static DEFINE_MUTEX(devlink_mutex);
105 struct net *devlink_net(const struct devlink *devlink)
107 return read_pnet(&devlink->_net);
109 EXPORT_SYMBOL_GPL(devlink_net);
111 static void __devlink_net_set(struct devlink *devlink, struct net *net)
113 write_pnet(&devlink->_net, net);
116 void devlink_net_set(struct devlink *devlink, struct net *net)
118 if (WARN_ON(devlink->registered))
120 __devlink_net_set(devlink, net);
122 EXPORT_SYMBOL_GPL(devlink_net_set);
124 static struct devlink *devlink_get_from_attrs(struct net *net,
125 struct nlattr **attrs)
127 struct devlink *devlink;
131 if (!attrs[DEVLINK_ATTR_BUS_NAME] || !attrs[DEVLINK_ATTR_DEV_NAME])
132 return ERR_PTR(-EINVAL);
134 busname = nla_data(attrs[DEVLINK_ATTR_BUS_NAME]);
135 devname = nla_data(attrs[DEVLINK_ATTR_DEV_NAME]);
137 lockdep_assert_held(&devlink_mutex);
139 list_for_each_entry(devlink, &devlink_list, list) {
140 if (strcmp(devlink->dev->bus->name, busname) == 0 &&
141 strcmp(dev_name(devlink->dev), devname) == 0 &&
142 net_eq(devlink_net(devlink), net))
146 return ERR_PTR(-ENODEV);
149 static struct devlink *devlink_get_from_info(struct genl_info *info)
151 return devlink_get_from_attrs(genl_info_net(info), info->attrs);
154 static struct devlink_port *devlink_port_get_by_index(struct devlink *devlink,
155 unsigned int port_index)
157 struct devlink_port *devlink_port;
159 list_for_each_entry(devlink_port, &devlink->port_list, list) {
160 if (devlink_port->index == port_index)
166 static bool devlink_port_index_exists(struct devlink *devlink,
167 unsigned int port_index)
169 return devlink_port_get_by_index(devlink, port_index);
172 static struct devlink_port *devlink_port_get_from_attrs(struct devlink *devlink,
173 struct nlattr **attrs)
175 if (attrs[DEVLINK_ATTR_PORT_INDEX]) {
176 u32 port_index = nla_get_u32(attrs[DEVLINK_ATTR_PORT_INDEX]);
177 struct devlink_port *devlink_port;
179 devlink_port = devlink_port_get_by_index(devlink, port_index);
181 return ERR_PTR(-ENODEV);
184 return ERR_PTR(-EINVAL);
187 static struct devlink_port *devlink_port_get_from_info(struct devlink *devlink,
188 struct genl_info *info)
190 return devlink_port_get_from_attrs(devlink, info->attrs);
194 struct list_head list;
197 u16 ingress_pools_count;
198 u16 egress_pools_count;
199 u16 ingress_tc_count;
203 static u16 devlink_sb_pool_count(struct devlink_sb *devlink_sb)
205 return devlink_sb->ingress_pools_count + devlink_sb->egress_pools_count;
208 static struct devlink_sb *devlink_sb_get_by_index(struct devlink *devlink,
209 unsigned int sb_index)
211 struct devlink_sb *devlink_sb;
213 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
214 if (devlink_sb->index == sb_index)
220 static bool devlink_sb_index_exists(struct devlink *devlink,
221 unsigned int sb_index)
223 return devlink_sb_get_by_index(devlink, sb_index);
226 static struct devlink_sb *devlink_sb_get_from_attrs(struct devlink *devlink,
227 struct nlattr **attrs)
229 if (attrs[DEVLINK_ATTR_SB_INDEX]) {
230 u32 sb_index = nla_get_u32(attrs[DEVLINK_ATTR_SB_INDEX]);
231 struct devlink_sb *devlink_sb;
233 devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
235 return ERR_PTR(-ENODEV);
238 return ERR_PTR(-EINVAL);
241 static struct devlink_sb *devlink_sb_get_from_info(struct devlink *devlink,
242 struct genl_info *info)
244 return devlink_sb_get_from_attrs(devlink, info->attrs);
247 static int devlink_sb_pool_index_get_from_attrs(struct devlink_sb *devlink_sb,
248 struct nlattr **attrs,
253 if (!attrs[DEVLINK_ATTR_SB_POOL_INDEX])
256 val = nla_get_u16(attrs[DEVLINK_ATTR_SB_POOL_INDEX]);
257 if (val >= devlink_sb_pool_count(devlink_sb))
263 static int devlink_sb_pool_index_get_from_info(struct devlink_sb *devlink_sb,
264 struct genl_info *info,
267 return devlink_sb_pool_index_get_from_attrs(devlink_sb, info->attrs,
272 devlink_sb_pool_type_get_from_attrs(struct nlattr **attrs,
273 enum devlink_sb_pool_type *p_pool_type)
277 if (!attrs[DEVLINK_ATTR_SB_POOL_TYPE])
280 val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_TYPE]);
281 if (val != DEVLINK_SB_POOL_TYPE_INGRESS &&
282 val != DEVLINK_SB_POOL_TYPE_EGRESS)
289 devlink_sb_pool_type_get_from_info(struct genl_info *info,
290 enum devlink_sb_pool_type *p_pool_type)
292 return devlink_sb_pool_type_get_from_attrs(info->attrs, p_pool_type);
296 devlink_sb_th_type_get_from_attrs(struct nlattr **attrs,
297 enum devlink_sb_threshold_type *p_th_type)
301 if (!attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE])
304 val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE]);
305 if (val != DEVLINK_SB_THRESHOLD_TYPE_STATIC &&
306 val != DEVLINK_SB_THRESHOLD_TYPE_DYNAMIC)
313 devlink_sb_th_type_get_from_info(struct genl_info *info,
314 enum devlink_sb_threshold_type *p_th_type)
316 return devlink_sb_th_type_get_from_attrs(info->attrs, p_th_type);
320 devlink_sb_tc_index_get_from_attrs(struct devlink_sb *devlink_sb,
321 struct nlattr **attrs,
322 enum devlink_sb_pool_type pool_type,
327 if (!attrs[DEVLINK_ATTR_SB_TC_INDEX])
330 val = nla_get_u16(attrs[DEVLINK_ATTR_SB_TC_INDEX]);
331 if (pool_type == DEVLINK_SB_POOL_TYPE_INGRESS &&
332 val >= devlink_sb->ingress_tc_count)
334 if (pool_type == DEVLINK_SB_POOL_TYPE_EGRESS &&
335 val >= devlink_sb->egress_tc_count)
342 devlink_sb_tc_index_get_from_info(struct devlink_sb *devlink_sb,
343 struct genl_info *info,
344 enum devlink_sb_pool_type pool_type,
347 return devlink_sb_tc_index_get_from_attrs(devlink_sb, info->attrs,
348 pool_type, p_tc_index);
351 struct devlink_region {
352 struct devlink *devlink;
353 struct devlink_port *port;
354 struct list_head list;
356 const struct devlink_region_ops *ops;
357 const struct devlink_port_region_ops *port_ops;
359 struct list_head snapshot_list;
365 struct devlink_snapshot {
366 struct list_head list;
367 struct devlink_region *region;
372 static struct devlink_region *
373 devlink_region_get_by_name(struct devlink *devlink, const char *region_name)
375 struct devlink_region *region;
377 list_for_each_entry(region, &devlink->region_list, list)
378 if (!strcmp(region->ops->name, region_name))
384 static struct devlink_region *
385 devlink_port_region_get_by_name(struct devlink_port *port,
386 const char *region_name)
388 struct devlink_region *region;
390 list_for_each_entry(region, &port->region_list, list)
391 if (!strcmp(region->ops->name, region_name))
397 static struct devlink_snapshot *
398 devlink_region_snapshot_get_by_id(struct devlink_region *region, u32 id)
400 struct devlink_snapshot *snapshot;
402 list_for_each_entry(snapshot, ®ion->snapshot_list, list)
403 if (snapshot->id == id)
409 #define DEVLINK_NL_FLAG_NEED_PORT BIT(0)
410 #define DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT BIT(1)
412 /* The per devlink instance lock is taken by default in the pre-doit
413 * operation, yet several commands do not require this. The global
414 * devlink lock is taken and protects from disruption by user-calls.
416 #define DEVLINK_NL_FLAG_NO_LOCK BIT(2)
418 static int devlink_nl_pre_doit(const struct genl_ops *ops,
419 struct sk_buff *skb, struct genl_info *info)
421 struct devlink_port *devlink_port;
422 struct devlink *devlink;
425 mutex_lock(&devlink_mutex);
426 devlink = devlink_get_from_info(info);
427 if (IS_ERR(devlink)) {
428 mutex_unlock(&devlink_mutex);
429 return PTR_ERR(devlink);
431 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
432 mutex_lock(&devlink->lock);
433 info->user_ptr[0] = devlink;
434 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT) {
435 devlink_port = devlink_port_get_from_info(devlink, info);
436 if (IS_ERR(devlink_port)) {
437 err = PTR_ERR(devlink_port);
440 info->user_ptr[1] = devlink_port;
441 } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT) {
442 devlink_port = devlink_port_get_from_info(devlink, info);
443 if (!IS_ERR(devlink_port))
444 info->user_ptr[1] = devlink_port;
449 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
450 mutex_unlock(&devlink->lock);
451 mutex_unlock(&devlink_mutex);
455 static void devlink_nl_post_doit(const struct genl_ops *ops,
456 struct sk_buff *skb, struct genl_info *info)
458 struct devlink *devlink;
460 devlink = info->user_ptr[0];
461 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
462 mutex_unlock(&devlink->lock);
463 mutex_unlock(&devlink_mutex);
466 static struct genl_family devlink_nl_family;
468 enum devlink_multicast_groups {
469 DEVLINK_MCGRP_CONFIG,
472 static const struct genl_multicast_group devlink_nl_mcgrps[] = {
473 [DEVLINK_MCGRP_CONFIG] = { .name = DEVLINK_GENL_MCGRP_CONFIG_NAME },
476 static int devlink_nl_put_handle(struct sk_buff *msg, struct devlink *devlink)
478 if (nla_put_string(msg, DEVLINK_ATTR_BUS_NAME, devlink->dev->bus->name))
480 if (nla_put_string(msg, DEVLINK_ATTR_DEV_NAME, dev_name(devlink->dev)))
485 struct devlink_reload_combination {
486 enum devlink_reload_action action;
487 enum devlink_reload_limit limit;
490 static const struct devlink_reload_combination devlink_reload_invalid_combinations[] = {
492 /* can't reinitialize driver with no down time */
493 .action = DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
494 .limit = DEVLINK_RELOAD_LIMIT_NO_RESET,
499 devlink_reload_combination_is_invalid(enum devlink_reload_action action,
500 enum devlink_reload_limit limit)
504 for (i = 0; i < ARRAY_SIZE(devlink_reload_invalid_combinations); i++)
505 if (devlink_reload_invalid_combinations[i].action == action &&
506 devlink_reload_invalid_combinations[i].limit == limit)
512 devlink_reload_action_is_supported(struct devlink *devlink, enum devlink_reload_action action)
514 return test_bit(action, &devlink->ops->reload_actions);
518 devlink_reload_limit_is_supported(struct devlink *devlink, enum devlink_reload_limit limit)
520 return test_bit(limit, &devlink->ops->reload_limits);
523 static int devlink_reload_stat_put(struct sk_buff *msg,
524 enum devlink_reload_limit limit, u32 value)
526 struct nlattr *reload_stats_entry;
528 reload_stats_entry = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_STATS_ENTRY);
529 if (!reload_stats_entry)
532 if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_STATS_LIMIT, limit) ||
533 nla_put_u32(msg, DEVLINK_ATTR_RELOAD_STATS_VALUE, value))
534 goto nla_put_failure;
535 nla_nest_end(msg, reload_stats_entry);
539 nla_nest_cancel(msg, reload_stats_entry);
543 static int devlink_reload_stats_put(struct sk_buff *msg, struct devlink *devlink, bool is_remote)
545 struct nlattr *reload_stats_attr, *act_info, *act_stats;
550 reload_stats_attr = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_STATS);
552 reload_stats_attr = nla_nest_start(msg, DEVLINK_ATTR_REMOTE_RELOAD_STATS);
554 if (!reload_stats_attr)
557 for (i = 0; i <= DEVLINK_RELOAD_ACTION_MAX; i++) {
559 !devlink_reload_action_is_supported(devlink, i)) ||
560 i == DEVLINK_RELOAD_ACTION_UNSPEC)
562 act_info = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_ACTION_INFO);
564 goto nla_put_failure;
566 if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_ACTION, i))
567 goto action_info_nest_cancel;
568 act_stats = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_ACTION_STATS);
570 goto action_info_nest_cancel;
572 for (j = 0; j <= DEVLINK_RELOAD_LIMIT_MAX; j++) {
573 /* Remote stats are shown even if not locally supported.
574 * Stats of actions with unspecified limit are shown
575 * though drivers don't need to register unspecified
578 if ((!is_remote && j != DEVLINK_RELOAD_LIMIT_UNSPEC &&
579 !devlink_reload_limit_is_supported(devlink, j)) ||
580 devlink_reload_combination_is_invalid(i, j))
583 stat_idx = j * __DEVLINK_RELOAD_ACTION_MAX + i;
585 value = devlink->stats.reload_stats[stat_idx];
587 value = devlink->stats.remote_reload_stats[stat_idx];
588 if (devlink_reload_stat_put(msg, j, value))
589 goto action_stats_nest_cancel;
591 nla_nest_end(msg, act_stats);
592 nla_nest_end(msg, act_info);
594 nla_nest_end(msg, reload_stats_attr);
597 action_stats_nest_cancel:
598 nla_nest_cancel(msg, act_stats);
599 action_info_nest_cancel:
600 nla_nest_cancel(msg, act_info);
602 nla_nest_cancel(msg, reload_stats_attr);
606 static int devlink_nl_fill(struct sk_buff *msg, struct devlink *devlink,
607 enum devlink_command cmd, u32 portid,
610 struct nlattr *dev_stats;
613 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
617 if (devlink_nl_put_handle(msg, devlink))
618 goto nla_put_failure;
619 if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_FAILED, devlink->reload_failed))
620 goto nla_put_failure;
622 dev_stats = nla_nest_start(msg, DEVLINK_ATTR_DEV_STATS);
624 goto nla_put_failure;
626 if (devlink_reload_stats_put(msg, devlink, false))
627 goto dev_stats_nest_cancel;
628 if (devlink_reload_stats_put(msg, devlink, true))
629 goto dev_stats_nest_cancel;
631 nla_nest_end(msg, dev_stats);
632 genlmsg_end(msg, hdr);
635 dev_stats_nest_cancel:
636 nla_nest_cancel(msg, dev_stats);
638 genlmsg_cancel(msg, hdr);
642 static void devlink_notify(struct devlink *devlink, enum devlink_command cmd)
647 WARN_ON(cmd != DEVLINK_CMD_NEW && cmd != DEVLINK_CMD_DEL);
649 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
653 err = devlink_nl_fill(msg, devlink, cmd, 0, 0, 0);
659 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
660 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
663 static int devlink_nl_port_attrs_put(struct sk_buff *msg,
664 struct devlink_port *devlink_port)
666 struct devlink_port_attrs *attrs = &devlink_port->attrs;
668 if (!devlink_port->attrs_set)
671 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_LANES, attrs->lanes))
674 if (nla_put_u8(msg, DEVLINK_ATTR_PORT_SPLITTABLE, attrs->splittable))
676 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_FLAVOUR, attrs->flavour))
678 switch (devlink_port->attrs.flavour) {
679 case DEVLINK_PORT_FLAVOUR_PCI_PF:
680 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
681 attrs->pci_pf.controller) ||
682 nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_pf.pf))
684 if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_pf.external))
687 case DEVLINK_PORT_FLAVOUR_PCI_VF:
688 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
689 attrs->pci_vf.controller) ||
690 nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_vf.pf) ||
691 nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_VF_NUMBER, attrs->pci_vf.vf))
693 if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_vf.external))
696 case DEVLINK_PORT_FLAVOUR_PCI_SF:
697 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
698 attrs->pci_sf.controller) ||
699 nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER,
701 nla_put_u32(msg, DEVLINK_ATTR_PORT_PCI_SF_NUMBER,
705 case DEVLINK_PORT_FLAVOUR_PHYSICAL:
706 case DEVLINK_PORT_FLAVOUR_CPU:
707 case DEVLINK_PORT_FLAVOUR_DSA:
708 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_NUMBER,
709 attrs->phys.port_number))
713 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_GROUP,
714 attrs->phys.port_number))
716 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_SUBPORT_NUMBER,
717 attrs->phys.split_subport_number))
727 devlink_port_fn_hw_addr_fill(struct devlink *devlink, const struct devlink_ops *ops,
728 struct devlink_port *port, struct sk_buff *msg,
729 struct netlink_ext_ack *extack, bool *msg_updated)
731 u8 hw_addr[MAX_ADDR_LEN];
735 if (!ops->port_function_hw_addr_get)
738 err = ops->port_function_hw_addr_get(devlink, port, hw_addr, &hw_addr_len, extack);
740 if (err == -EOPNOTSUPP)
744 err = nla_put(msg, DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR, hw_addr_len, hw_addr);
752 devlink_port_fn_state_valid(enum devlink_port_fn_state state)
754 return state == DEVLINK_PORT_FN_STATE_INACTIVE ||
755 state == DEVLINK_PORT_FN_STATE_ACTIVE;
759 devlink_port_fn_opstate_valid(enum devlink_port_fn_opstate opstate)
761 return opstate == DEVLINK_PORT_FN_OPSTATE_DETACHED ||
762 opstate == DEVLINK_PORT_FN_OPSTATE_ATTACHED;
766 devlink_port_fn_state_fill(struct devlink *devlink,
767 const struct devlink_ops *ops,
768 struct devlink_port *port, struct sk_buff *msg,
769 struct netlink_ext_ack *extack,
772 enum devlink_port_fn_opstate opstate;
773 enum devlink_port_fn_state state;
776 if (!ops->port_fn_state_get)
779 err = ops->port_fn_state_get(devlink, port, &state, &opstate, extack);
781 if (err == -EOPNOTSUPP)
785 if (!devlink_port_fn_state_valid(state)) {
787 NL_SET_ERR_MSG_MOD(extack, "Invalid state read from driver");
790 if (!devlink_port_fn_opstate_valid(opstate)) {
792 NL_SET_ERR_MSG_MOD(extack,
793 "Invalid operational state read from driver");
796 if (nla_put_u8(msg, DEVLINK_PORT_FN_ATTR_STATE, state) ||
797 nla_put_u8(msg, DEVLINK_PORT_FN_ATTR_OPSTATE, opstate))
804 devlink_nl_port_function_attrs_put(struct sk_buff *msg, struct devlink_port *port,
805 struct netlink_ext_ack *extack)
807 struct devlink *devlink = port->devlink;
808 const struct devlink_ops *ops;
809 struct nlattr *function_attr;
810 bool msg_updated = false;
813 function_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PORT_FUNCTION);
818 err = devlink_port_fn_hw_addr_fill(devlink, ops, port, msg,
819 extack, &msg_updated);
822 err = devlink_port_fn_state_fill(devlink, ops, port, msg, extack,
825 if (err || !msg_updated)
826 nla_nest_cancel(msg, function_attr);
828 nla_nest_end(msg, function_attr);
832 static int devlink_nl_port_fill(struct sk_buff *msg, struct devlink *devlink,
833 struct devlink_port *devlink_port,
834 enum devlink_command cmd, u32 portid,
836 struct netlink_ext_ack *extack)
840 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
844 if (devlink_nl_put_handle(msg, devlink))
845 goto nla_put_failure;
846 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
847 goto nla_put_failure;
849 /* Hold rtnl lock while accessing port's netdev attributes. */
851 spin_lock_bh(&devlink_port->type_lock);
852 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_TYPE, devlink_port->type))
853 goto nla_put_failure_type_locked;
854 if (devlink_port->desired_type != DEVLINK_PORT_TYPE_NOTSET &&
855 nla_put_u16(msg, DEVLINK_ATTR_PORT_DESIRED_TYPE,
856 devlink_port->desired_type))
857 goto nla_put_failure_type_locked;
858 if (devlink_port->type == DEVLINK_PORT_TYPE_ETH) {
859 struct net *net = devlink_net(devlink_port->devlink);
860 struct net_device *netdev = devlink_port->type_dev;
862 if (netdev && net_eq(net, dev_net(netdev)) &&
863 (nla_put_u32(msg, DEVLINK_ATTR_PORT_NETDEV_IFINDEX,
865 nla_put_string(msg, DEVLINK_ATTR_PORT_NETDEV_NAME,
867 goto nla_put_failure_type_locked;
869 if (devlink_port->type == DEVLINK_PORT_TYPE_IB) {
870 struct ib_device *ibdev = devlink_port->type_dev;
873 nla_put_string(msg, DEVLINK_ATTR_PORT_IBDEV_NAME,
875 goto nla_put_failure_type_locked;
877 spin_unlock_bh(&devlink_port->type_lock);
879 if (devlink_nl_port_attrs_put(msg, devlink_port))
880 goto nla_put_failure;
881 if (devlink_nl_port_function_attrs_put(msg, devlink_port, extack))
882 goto nla_put_failure;
884 genlmsg_end(msg, hdr);
887 nla_put_failure_type_locked:
888 spin_unlock_bh(&devlink_port->type_lock);
891 genlmsg_cancel(msg, hdr);
895 static void devlink_port_notify(struct devlink_port *devlink_port,
896 enum devlink_command cmd)
898 struct devlink *devlink = devlink_port->devlink;
902 if (!devlink_port->registered)
905 WARN_ON(cmd != DEVLINK_CMD_PORT_NEW && cmd != DEVLINK_CMD_PORT_DEL);
907 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
911 err = devlink_nl_port_fill(msg, devlink, devlink_port, cmd, 0, 0, 0,
918 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
919 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
922 static int devlink_nl_cmd_get_doit(struct sk_buff *skb, struct genl_info *info)
924 struct devlink *devlink = info->user_ptr[0];
928 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
932 err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
933 info->snd_portid, info->snd_seq, 0);
939 return genlmsg_reply(msg, info);
942 static int devlink_nl_cmd_get_dumpit(struct sk_buff *msg,
943 struct netlink_callback *cb)
945 struct devlink *devlink;
946 int start = cb->args[0];
950 mutex_lock(&devlink_mutex);
951 list_for_each_entry(devlink, &devlink_list, list) {
952 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
958 err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
959 NETLINK_CB(cb->skb).portid,
960 cb->nlh->nlmsg_seq, NLM_F_MULTI);
966 mutex_unlock(&devlink_mutex);
972 static int devlink_nl_cmd_port_get_doit(struct sk_buff *skb,
973 struct genl_info *info)
975 struct devlink_port *devlink_port = info->user_ptr[1];
976 struct devlink *devlink = devlink_port->devlink;
980 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
984 err = devlink_nl_port_fill(msg, devlink, devlink_port,
985 DEVLINK_CMD_PORT_NEW,
986 info->snd_portid, info->snd_seq, 0,
993 return genlmsg_reply(msg, info);
996 static int devlink_nl_cmd_port_get_dumpit(struct sk_buff *msg,
997 struct netlink_callback *cb)
999 struct devlink *devlink;
1000 struct devlink_port *devlink_port;
1001 int start = cb->args[0];
1005 mutex_lock(&devlink_mutex);
1006 list_for_each_entry(devlink, &devlink_list, list) {
1007 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
1009 mutex_lock(&devlink->lock);
1010 list_for_each_entry(devlink_port, &devlink->port_list, list) {
1015 err = devlink_nl_port_fill(msg, devlink, devlink_port,
1017 NETLINK_CB(cb->skb).portid,
1022 mutex_unlock(&devlink->lock);
1027 mutex_unlock(&devlink->lock);
1030 mutex_unlock(&devlink_mutex);
1036 static int devlink_port_type_set(struct devlink *devlink,
1037 struct devlink_port *devlink_port,
1038 enum devlink_port_type port_type)
1043 if (devlink->ops->port_type_set) {
1044 if (port_type == devlink_port->type)
1046 err = devlink->ops->port_type_set(devlink_port, port_type);
1049 devlink_port->desired_type = port_type;
1050 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
1057 devlink_port_function_hw_addr_set(struct devlink *devlink, struct devlink_port *port,
1058 const struct nlattr *attr, struct netlink_ext_ack *extack)
1060 const struct devlink_ops *ops;
1064 hw_addr = nla_data(attr);
1065 hw_addr_len = nla_len(attr);
1066 if (hw_addr_len > MAX_ADDR_LEN) {
1067 NL_SET_ERR_MSG_MOD(extack, "Port function hardware address too long");
1070 if (port->type == DEVLINK_PORT_TYPE_ETH) {
1071 if (hw_addr_len != ETH_ALEN) {
1072 NL_SET_ERR_MSG_MOD(extack, "Address must be 6 bytes for Ethernet device");
1075 if (!is_unicast_ether_addr(hw_addr)) {
1076 NL_SET_ERR_MSG_MOD(extack, "Non-unicast hardware address unsupported");
1082 if (!ops->port_function_hw_addr_set) {
1083 NL_SET_ERR_MSG_MOD(extack, "Port doesn't support function attributes");
1087 return ops->port_function_hw_addr_set(devlink, port, hw_addr, hw_addr_len, extack);
1090 static int devlink_port_fn_state_set(struct devlink *devlink,
1091 struct devlink_port *port,
1092 const struct nlattr *attr,
1093 struct netlink_ext_ack *extack)
1095 enum devlink_port_fn_state state;
1096 const struct devlink_ops *ops;
1098 state = nla_get_u8(attr);
1100 if (!ops->port_fn_state_set) {
1101 NL_SET_ERR_MSG_MOD(extack,
1102 "Function does not support state setting");
1105 return ops->port_fn_state_set(devlink, port, state, extack);
1109 devlink_port_function_set(struct devlink *devlink, struct devlink_port *port,
1110 const struct nlattr *attr, struct netlink_ext_ack *extack)
1112 struct nlattr *tb[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1];
1115 err = nla_parse_nested(tb, DEVLINK_PORT_FUNCTION_ATTR_MAX, attr,
1116 devlink_function_nl_policy, extack);
1118 NL_SET_ERR_MSG_MOD(extack, "Fail to parse port function attributes");
1122 attr = tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR];
1124 err = devlink_port_function_hw_addr_set(devlink, port, attr, extack);
1128 /* Keep this as the last function attribute set, so that when
1129 * multiple port function attributes are set along with state,
1130 * Those can be applied first before activating the state.
1132 attr = tb[DEVLINK_PORT_FN_ATTR_STATE];
1134 err = devlink_port_fn_state_set(devlink, port, attr, extack);
1137 devlink_port_notify(port, DEVLINK_CMD_PORT_NEW);
1141 static int devlink_nl_cmd_port_set_doit(struct sk_buff *skb,
1142 struct genl_info *info)
1144 struct devlink_port *devlink_port = info->user_ptr[1];
1145 struct devlink *devlink = devlink_port->devlink;
1148 if (info->attrs[DEVLINK_ATTR_PORT_TYPE]) {
1149 enum devlink_port_type port_type;
1151 port_type = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_TYPE]);
1152 err = devlink_port_type_set(devlink, devlink_port, port_type);
1157 if (info->attrs[DEVLINK_ATTR_PORT_FUNCTION]) {
1158 struct nlattr *attr = info->attrs[DEVLINK_ATTR_PORT_FUNCTION];
1159 struct netlink_ext_ack *extack = info->extack;
1161 err = devlink_port_function_set(devlink, devlink_port, attr, extack);
1169 static int devlink_port_split(struct devlink *devlink, u32 port_index,
1170 u32 count, struct netlink_ext_ack *extack)
1173 if (devlink->ops->port_split)
1174 return devlink->ops->port_split(devlink, port_index, count,
1179 static int devlink_nl_cmd_port_split_doit(struct sk_buff *skb,
1180 struct genl_info *info)
1182 struct devlink *devlink = info->user_ptr[0];
1183 struct devlink_port *devlink_port;
1187 if (!info->attrs[DEVLINK_ATTR_PORT_INDEX] ||
1188 !info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT])
1191 devlink_port = devlink_port_get_from_info(devlink, info);
1192 port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
1193 count = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT]);
1195 if (IS_ERR(devlink_port))
1198 if (!devlink_port->attrs.splittable) {
1199 /* Split ports cannot be split. */
1200 if (devlink_port->attrs.split)
1201 NL_SET_ERR_MSG_MOD(info->extack, "Port cannot be split further");
1203 NL_SET_ERR_MSG_MOD(info->extack, "Port cannot be split");
1207 if (count < 2 || !is_power_of_2(count) || count > devlink_port->attrs.lanes) {
1208 NL_SET_ERR_MSG_MOD(info->extack, "Invalid split count");
1212 return devlink_port_split(devlink, port_index, count, info->extack);
1215 static int devlink_port_unsplit(struct devlink *devlink, u32 port_index,
1216 struct netlink_ext_ack *extack)
1219 if (devlink->ops->port_unsplit)
1220 return devlink->ops->port_unsplit(devlink, port_index, extack);
1224 static int devlink_nl_cmd_port_unsplit_doit(struct sk_buff *skb,
1225 struct genl_info *info)
1227 struct devlink *devlink = info->user_ptr[0];
1230 if (!info->attrs[DEVLINK_ATTR_PORT_INDEX])
1233 port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
1234 return devlink_port_unsplit(devlink, port_index, info->extack);
1237 static int devlink_port_new_notifiy(struct devlink *devlink,
1238 unsigned int port_index,
1239 struct genl_info *info)
1241 struct devlink_port *devlink_port;
1242 struct sk_buff *msg;
1245 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1249 mutex_lock(&devlink->lock);
1250 devlink_port = devlink_port_get_by_index(devlink, port_index);
1251 if (!devlink_port) {
1256 err = devlink_nl_port_fill(msg, devlink, devlink_port,
1257 DEVLINK_CMD_NEW, info->snd_portid,
1258 info->snd_seq, 0, NULL);
1262 err = genlmsg_reply(msg, info);
1263 mutex_unlock(&devlink->lock);
1267 mutex_unlock(&devlink->lock);
1272 static int devlink_nl_cmd_port_new_doit(struct sk_buff *skb,
1273 struct genl_info *info)
1275 struct netlink_ext_ack *extack = info->extack;
1276 struct devlink_port_new_attrs new_attrs = {};
1277 struct devlink *devlink = info->user_ptr[0];
1278 unsigned int new_port_index;
1281 if (!devlink->ops->port_new || !devlink->ops->port_del)
1284 if (!info->attrs[DEVLINK_ATTR_PORT_FLAVOUR] ||
1285 !info->attrs[DEVLINK_ATTR_PORT_PCI_PF_NUMBER]) {
1286 NL_SET_ERR_MSG_MOD(extack, "Port flavour or PCI PF are not specified");
1289 new_attrs.flavour = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_FLAVOUR]);
1291 nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_PCI_PF_NUMBER]);
1293 if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
1294 /* Port index of the new port being created by driver. */
1295 new_attrs.port_index =
1296 nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
1297 new_attrs.port_index_valid = true;
1299 if (info->attrs[DEVLINK_ATTR_PORT_CONTROLLER_NUMBER]) {
1300 new_attrs.controller =
1301 nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_CONTROLLER_NUMBER]);
1302 new_attrs.controller_valid = true;
1304 if (new_attrs.flavour == DEVLINK_PORT_FLAVOUR_PCI_SF &&
1305 info->attrs[DEVLINK_ATTR_PORT_PCI_SF_NUMBER]) {
1306 new_attrs.sfnum = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_PCI_SF_NUMBER]);
1307 new_attrs.sfnum_valid = true;
1310 err = devlink->ops->port_new(devlink, &new_attrs, extack,
1315 err = devlink_port_new_notifiy(devlink, new_port_index, info);
1316 if (err && err != -ENODEV) {
1317 /* Fail to send the response; destroy newly created port. */
1318 devlink->ops->port_del(devlink, new_port_index, extack);
1323 static int devlink_nl_cmd_port_del_doit(struct sk_buff *skb,
1324 struct genl_info *info)
1326 struct netlink_ext_ack *extack = info->extack;
1327 struct devlink *devlink = info->user_ptr[0];
1328 unsigned int port_index;
1330 if (!devlink->ops->port_del)
1333 if (!info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
1334 NL_SET_ERR_MSG_MOD(extack, "Port index is not specified");
1337 port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
1339 return devlink->ops->port_del(devlink, port_index, extack);
1342 static int devlink_nl_sb_fill(struct sk_buff *msg, struct devlink *devlink,
1343 struct devlink_sb *devlink_sb,
1344 enum devlink_command cmd, u32 portid,
1349 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1353 if (devlink_nl_put_handle(msg, devlink))
1354 goto nla_put_failure;
1355 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
1356 goto nla_put_failure;
1357 if (nla_put_u32(msg, DEVLINK_ATTR_SB_SIZE, devlink_sb->size))
1358 goto nla_put_failure;
1359 if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_POOL_COUNT,
1360 devlink_sb->ingress_pools_count))
1361 goto nla_put_failure;
1362 if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_POOL_COUNT,
1363 devlink_sb->egress_pools_count))
1364 goto nla_put_failure;
1365 if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_TC_COUNT,
1366 devlink_sb->ingress_tc_count))
1367 goto nla_put_failure;
1368 if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_TC_COUNT,
1369 devlink_sb->egress_tc_count))
1370 goto nla_put_failure;
1372 genlmsg_end(msg, hdr);
1376 genlmsg_cancel(msg, hdr);
1380 static int devlink_nl_cmd_sb_get_doit(struct sk_buff *skb,
1381 struct genl_info *info)
1383 struct devlink *devlink = info->user_ptr[0];
1384 struct devlink_sb *devlink_sb;
1385 struct sk_buff *msg;
1388 devlink_sb = devlink_sb_get_from_info(devlink, info);
1389 if (IS_ERR(devlink_sb))
1390 return PTR_ERR(devlink_sb);
1392 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1396 err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
1398 info->snd_portid, info->snd_seq, 0);
1404 return genlmsg_reply(msg, info);
1407 static int devlink_nl_cmd_sb_get_dumpit(struct sk_buff *msg,
1408 struct netlink_callback *cb)
1410 struct devlink *devlink;
1411 struct devlink_sb *devlink_sb;
1412 int start = cb->args[0];
1416 mutex_lock(&devlink_mutex);
1417 list_for_each_entry(devlink, &devlink_list, list) {
1418 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
1420 mutex_lock(&devlink->lock);
1421 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
1426 err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
1428 NETLINK_CB(cb->skb).portid,
1432 mutex_unlock(&devlink->lock);
1437 mutex_unlock(&devlink->lock);
1440 mutex_unlock(&devlink_mutex);
1446 static int devlink_nl_sb_pool_fill(struct sk_buff *msg, struct devlink *devlink,
1447 struct devlink_sb *devlink_sb,
1448 u16 pool_index, enum devlink_command cmd,
1449 u32 portid, u32 seq, int flags)
1451 struct devlink_sb_pool_info pool_info;
1455 err = devlink->ops->sb_pool_get(devlink, devlink_sb->index,
1456 pool_index, &pool_info);
1460 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1464 if (devlink_nl_put_handle(msg, devlink))
1465 goto nla_put_failure;
1466 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
1467 goto nla_put_failure;
1468 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
1469 goto nla_put_failure;
1470 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_info.pool_type))
1471 goto nla_put_failure;
1472 if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_SIZE, pool_info.size))
1473 goto nla_put_failure;
1474 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE,
1475 pool_info.threshold_type))
1476 goto nla_put_failure;
1477 if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_CELL_SIZE,
1478 pool_info.cell_size))
1479 goto nla_put_failure;
1481 genlmsg_end(msg, hdr);
1485 genlmsg_cancel(msg, hdr);
1489 static int devlink_nl_cmd_sb_pool_get_doit(struct sk_buff *skb,
1490 struct genl_info *info)
1492 struct devlink *devlink = info->user_ptr[0];
1493 struct devlink_sb *devlink_sb;
1494 struct sk_buff *msg;
1498 devlink_sb = devlink_sb_get_from_info(devlink, info);
1499 if (IS_ERR(devlink_sb))
1500 return PTR_ERR(devlink_sb);
1502 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1507 if (!devlink->ops->sb_pool_get)
1510 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1514 err = devlink_nl_sb_pool_fill(msg, devlink, devlink_sb, pool_index,
1515 DEVLINK_CMD_SB_POOL_NEW,
1516 info->snd_portid, info->snd_seq, 0);
1522 return genlmsg_reply(msg, info);
1525 static int __sb_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
1526 struct devlink *devlink,
1527 struct devlink_sb *devlink_sb,
1528 u32 portid, u32 seq)
1530 u16 pool_count = devlink_sb_pool_count(devlink_sb);
1534 for (pool_index = 0; pool_index < pool_count; pool_index++) {
1535 if (*p_idx < start) {
1539 err = devlink_nl_sb_pool_fill(msg, devlink,
1542 DEVLINK_CMD_SB_POOL_NEW,
1543 portid, seq, NLM_F_MULTI);
1551 static int devlink_nl_cmd_sb_pool_get_dumpit(struct sk_buff *msg,
1552 struct netlink_callback *cb)
1554 struct devlink *devlink;
1555 struct devlink_sb *devlink_sb;
1556 int start = cb->args[0];
1560 mutex_lock(&devlink_mutex);
1561 list_for_each_entry(devlink, &devlink_list, list) {
1562 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
1563 !devlink->ops->sb_pool_get)
1565 mutex_lock(&devlink->lock);
1566 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
1567 err = __sb_pool_get_dumpit(msg, start, &idx, devlink,
1569 NETLINK_CB(cb->skb).portid,
1570 cb->nlh->nlmsg_seq);
1571 if (err == -EOPNOTSUPP) {
1574 mutex_unlock(&devlink->lock);
1578 mutex_unlock(&devlink->lock);
1581 mutex_unlock(&devlink_mutex);
1583 if (err != -EMSGSIZE)
1590 static int devlink_sb_pool_set(struct devlink *devlink, unsigned int sb_index,
1591 u16 pool_index, u32 size,
1592 enum devlink_sb_threshold_type threshold_type,
1593 struct netlink_ext_ack *extack)
1596 const struct devlink_ops *ops = devlink->ops;
1598 if (ops->sb_pool_set)
1599 return ops->sb_pool_set(devlink, sb_index, pool_index,
1600 size, threshold_type, extack);
1604 static int devlink_nl_cmd_sb_pool_set_doit(struct sk_buff *skb,
1605 struct genl_info *info)
1607 struct devlink *devlink = info->user_ptr[0];
1608 enum devlink_sb_threshold_type threshold_type;
1609 struct devlink_sb *devlink_sb;
1614 devlink_sb = devlink_sb_get_from_info(devlink, info);
1615 if (IS_ERR(devlink_sb))
1616 return PTR_ERR(devlink_sb);
1618 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1623 err = devlink_sb_th_type_get_from_info(info, &threshold_type);
1627 if (!info->attrs[DEVLINK_ATTR_SB_POOL_SIZE])
1630 size = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_POOL_SIZE]);
1631 return devlink_sb_pool_set(devlink, devlink_sb->index,
1632 pool_index, size, threshold_type,
1636 static int devlink_nl_sb_port_pool_fill(struct sk_buff *msg,
1637 struct devlink *devlink,
1638 struct devlink_port *devlink_port,
1639 struct devlink_sb *devlink_sb,
1641 enum devlink_command cmd,
1642 u32 portid, u32 seq, int flags)
1644 const struct devlink_ops *ops = devlink->ops;
1649 err = ops->sb_port_pool_get(devlink_port, devlink_sb->index,
1650 pool_index, &threshold);
1654 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1658 if (devlink_nl_put_handle(msg, devlink))
1659 goto nla_put_failure;
1660 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
1661 goto nla_put_failure;
1662 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
1663 goto nla_put_failure;
1664 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
1665 goto nla_put_failure;
1666 if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
1667 goto nla_put_failure;
1669 if (ops->sb_occ_port_pool_get) {
1673 err = ops->sb_occ_port_pool_get(devlink_port, devlink_sb->index,
1674 pool_index, &cur, &max);
1675 if (err && err != -EOPNOTSUPP)
1676 goto sb_occ_get_failure;
1678 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
1679 goto nla_put_failure;
1680 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
1681 goto nla_put_failure;
1685 genlmsg_end(msg, hdr);
1691 genlmsg_cancel(msg, hdr);
1695 static int devlink_nl_cmd_sb_port_pool_get_doit(struct sk_buff *skb,
1696 struct genl_info *info)
1698 struct devlink_port *devlink_port = info->user_ptr[1];
1699 struct devlink *devlink = devlink_port->devlink;
1700 struct devlink_sb *devlink_sb;
1701 struct sk_buff *msg;
1705 devlink_sb = devlink_sb_get_from_info(devlink, info);
1706 if (IS_ERR(devlink_sb))
1707 return PTR_ERR(devlink_sb);
1709 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1714 if (!devlink->ops->sb_port_pool_get)
1717 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1721 err = devlink_nl_sb_port_pool_fill(msg, devlink, devlink_port,
1722 devlink_sb, pool_index,
1723 DEVLINK_CMD_SB_PORT_POOL_NEW,
1724 info->snd_portid, info->snd_seq, 0);
1730 return genlmsg_reply(msg, info);
1733 static int __sb_port_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
1734 struct devlink *devlink,
1735 struct devlink_sb *devlink_sb,
1736 u32 portid, u32 seq)
1738 struct devlink_port *devlink_port;
1739 u16 pool_count = devlink_sb_pool_count(devlink_sb);
1743 list_for_each_entry(devlink_port, &devlink->port_list, list) {
1744 for (pool_index = 0; pool_index < pool_count; pool_index++) {
1745 if (*p_idx < start) {
1749 err = devlink_nl_sb_port_pool_fill(msg, devlink,
1753 DEVLINK_CMD_SB_PORT_POOL_NEW,
1764 static int devlink_nl_cmd_sb_port_pool_get_dumpit(struct sk_buff *msg,
1765 struct netlink_callback *cb)
1767 struct devlink *devlink;
1768 struct devlink_sb *devlink_sb;
1769 int start = cb->args[0];
1773 mutex_lock(&devlink_mutex);
1774 list_for_each_entry(devlink, &devlink_list, list) {
1775 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
1776 !devlink->ops->sb_port_pool_get)
1778 mutex_lock(&devlink->lock);
1779 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
1780 err = __sb_port_pool_get_dumpit(msg, start, &idx,
1781 devlink, devlink_sb,
1782 NETLINK_CB(cb->skb).portid,
1783 cb->nlh->nlmsg_seq);
1784 if (err == -EOPNOTSUPP) {
1787 mutex_unlock(&devlink->lock);
1791 mutex_unlock(&devlink->lock);
1794 mutex_unlock(&devlink_mutex);
1796 if (err != -EMSGSIZE)
1803 static int devlink_sb_port_pool_set(struct devlink_port *devlink_port,
1804 unsigned int sb_index, u16 pool_index,
1806 struct netlink_ext_ack *extack)
1809 const struct devlink_ops *ops = devlink_port->devlink->ops;
1811 if (ops->sb_port_pool_set)
1812 return ops->sb_port_pool_set(devlink_port, sb_index,
1813 pool_index, threshold, extack);
1817 static int devlink_nl_cmd_sb_port_pool_set_doit(struct sk_buff *skb,
1818 struct genl_info *info)
1820 struct devlink_port *devlink_port = info->user_ptr[1];
1821 struct devlink *devlink = info->user_ptr[0];
1822 struct devlink_sb *devlink_sb;
1827 devlink_sb = devlink_sb_get_from_info(devlink, info);
1828 if (IS_ERR(devlink_sb))
1829 return PTR_ERR(devlink_sb);
1831 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1836 if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD])
1839 threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
1840 return devlink_sb_port_pool_set(devlink_port, devlink_sb->index,
1841 pool_index, threshold, info->extack);
1845 devlink_nl_sb_tc_pool_bind_fill(struct sk_buff *msg, struct devlink *devlink,
1846 struct devlink_port *devlink_port,
1847 struct devlink_sb *devlink_sb, u16 tc_index,
1848 enum devlink_sb_pool_type pool_type,
1849 enum devlink_command cmd,
1850 u32 portid, u32 seq, int flags)
1852 const struct devlink_ops *ops = devlink->ops;
1858 err = ops->sb_tc_pool_bind_get(devlink_port, devlink_sb->index,
1859 tc_index, pool_type,
1860 &pool_index, &threshold);
1864 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1868 if (devlink_nl_put_handle(msg, devlink))
1869 goto nla_put_failure;
1870 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
1871 goto nla_put_failure;
1872 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
1873 goto nla_put_failure;
1874 if (nla_put_u16(msg, DEVLINK_ATTR_SB_TC_INDEX, tc_index))
1875 goto nla_put_failure;
1876 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_type))
1877 goto nla_put_failure;
1878 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
1879 goto nla_put_failure;
1880 if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
1881 goto nla_put_failure;
1883 if (ops->sb_occ_tc_port_bind_get) {
1887 err = ops->sb_occ_tc_port_bind_get(devlink_port,
1889 tc_index, pool_type,
1891 if (err && err != -EOPNOTSUPP)
1894 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
1895 goto nla_put_failure;
1896 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
1897 goto nla_put_failure;
1901 genlmsg_end(msg, hdr);
1905 genlmsg_cancel(msg, hdr);
1909 static int devlink_nl_cmd_sb_tc_pool_bind_get_doit(struct sk_buff *skb,
1910 struct genl_info *info)
1912 struct devlink_port *devlink_port = info->user_ptr[1];
1913 struct devlink *devlink = devlink_port->devlink;
1914 struct devlink_sb *devlink_sb;
1915 struct sk_buff *msg;
1916 enum devlink_sb_pool_type pool_type;
1920 devlink_sb = devlink_sb_get_from_info(devlink, info);
1921 if (IS_ERR(devlink_sb))
1922 return PTR_ERR(devlink_sb);
1924 err = devlink_sb_pool_type_get_from_info(info, &pool_type);
1928 err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
1929 pool_type, &tc_index);
1933 if (!devlink->ops->sb_tc_pool_bind_get)
1936 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1940 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink, devlink_port,
1941 devlink_sb, tc_index, pool_type,
1942 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
1950 return genlmsg_reply(msg, info);
1953 static int __sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
1954 int start, int *p_idx,
1955 struct devlink *devlink,
1956 struct devlink_sb *devlink_sb,
1957 u32 portid, u32 seq)
1959 struct devlink_port *devlink_port;
1963 list_for_each_entry(devlink_port, &devlink->port_list, list) {
1965 tc_index < devlink_sb->ingress_tc_count; tc_index++) {
1966 if (*p_idx < start) {
1970 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
1974 DEVLINK_SB_POOL_TYPE_INGRESS,
1975 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
1983 tc_index < devlink_sb->egress_tc_count; tc_index++) {
1984 if (*p_idx < start) {
1988 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
1992 DEVLINK_SB_POOL_TYPE_EGRESS,
1993 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
2005 devlink_nl_cmd_sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
2006 struct netlink_callback *cb)
2008 struct devlink *devlink;
2009 struct devlink_sb *devlink_sb;
2010 int start = cb->args[0];
2014 mutex_lock(&devlink_mutex);
2015 list_for_each_entry(devlink, &devlink_list, list) {
2016 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
2017 !devlink->ops->sb_tc_pool_bind_get)
2020 mutex_lock(&devlink->lock);
2021 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
2022 err = __sb_tc_pool_bind_get_dumpit(msg, start, &idx,
2025 NETLINK_CB(cb->skb).portid,
2026 cb->nlh->nlmsg_seq);
2027 if (err == -EOPNOTSUPP) {
2030 mutex_unlock(&devlink->lock);
2034 mutex_unlock(&devlink->lock);
2037 mutex_unlock(&devlink_mutex);
2039 if (err != -EMSGSIZE)
2046 static int devlink_sb_tc_pool_bind_set(struct devlink_port *devlink_port,
2047 unsigned int sb_index, u16 tc_index,
2048 enum devlink_sb_pool_type pool_type,
2049 u16 pool_index, u32 threshold,
2050 struct netlink_ext_ack *extack)
2053 const struct devlink_ops *ops = devlink_port->devlink->ops;
2055 if (ops->sb_tc_pool_bind_set)
2056 return ops->sb_tc_pool_bind_set(devlink_port, sb_index,
2057 tc_index, pool_type,
2058 pool_index, threshold, extack);
2062 static int devlink_nl_cmd_sb_tc_pool_bind_set_doit(struct sk_buff *skb,
2063 struct genl_info *info)
2065 struct devlink_port *devlink_port = info->user_ptr[1];
2066 struct devlink *devlink = info->user_ptr[0];
2067 enum devlink_sb_pool_type pool_type;
2068 struct devlink_sb *devlink_sb;
2074 devlink_sb = devlink_sb_get_from_info(devlink, info);
2075 if (IS_ERR(devlink_sb))
2076 return PTR_ERR(devlink_sb);
2078 err = devlink_sb_pool_type_get_from_info(info, &pool_type);
2082 err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
2083 pool_type, &tc_index);
2087 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
2092 if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD])
2095 threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
2096 return devlink_sb_tc_pool_bind_set(devlink_port, devlink_sb->index,
2097 tc_index, pool_type,
2098 pool_index, threshold, info->extack);
2101 static int devlink_nl_cmd_sb_occ_snapshot_doit(struct sk_buff *skb,
2102 struct genl_info *info)
2104 struct devlink *devlink = info->user_ptr[0];
2105 const struct devlink_ops *ops = devlink->ops;
2106 struct devlink_sb *devlink_sb;
2108 devlink_sb = devlink_sb_get_from_info(devlink, info);
2109 if (IS_ERR(devlink_sb))
2110 return PTR_ERR(devlink_sb);
2112 if (ops->sb_occ_snapshot)
2113 return ops->sb_occ_snapshot(devlink, devlink_sb->index);
2117 static int devlink_nl_cmd_sb_occ_max_clear_doit(struct sk_buff *skb,
2118 struct genl_info *info)
2120 struct devlink *devlink = info->user_ptr[0];
2121 const struct devlink_ops *ops = devlink->ops;
2122 struct devlink_sb *devlink_sb;
2124 devlink_sb = devlink_sb_get_from_info(devlink, info);
2125 if (IS_ERR(devlink_sb))
2126 return PTR_ERR(devlink_sb);
2128 if (ops->sb_occ_max_clear)
2129 return ops->sb_occ_max_clear(devlink, devlink_sb->index);
2133 static int devlink_nl_eswitch_fill(struct sk_buff *msg, struct devlink *devlink,
2134 enum devlink_command cmd, u32 portid,
2137 const struct devlink_ops *ops = devlink->ops;
2138 enum devlink_eswitch_encap_mode encap_mode;
2144 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
2148 err = devlink_nl_put_handle(msg, devlink);
2150 goto nla_put_failure;
2152 if (ops->eswitch_mode_get) {
2153 err = ops->eswitch_mode_get(devlink, &mode);
2155 goto nla_put_failure;
2156 err = nla_put_u16(msg, DEVLINK_ATTR_ESWITCH_MODE, mode);
2158 goto nla_put_failure;
2161 if (ops->eswitch_inline_mode_get) {
2162 err = ops->eswitch_inline_mode_get(devlink, &inline_mode);
2164 goto nla_put_failure;
2165 err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_INLINE_MODE,
2168 goto nla_put_failure;
2171 if (ops->eswitch_encap_mode_get) {
2172 err = ops->eswitch_encap_mode_get(devlink, &encap_mode);
2174 goto nla_put_failure;
2175 err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_ENCAP_MODE, encap_mode);
2177 goto nla_put_failure;
2180 genlmsg_end(msg, hdr);
2184 genlmsg_cancel(msg, hdr);
2188 static int devlink_nl_cmd_eswitch_get_doit(struct sk_buff *skb,
2189 struct genl_info *info)
2191 struct devlink *devlink = info->user_ptr[0];
2192 struct sk_buff *msg;
2195 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2199 err = devlink_nl_eswitch_fill(msg, devlink, DEVLINK_CMD_ESWITCH_GET,
2200 info->snd_portid, info->snd_seq, 0);
2207 return genlmsg_reply(msg, info);
2210 static int devlink_nl_cmd_eswitch_set_doit(struct sk_buff *skb,
2211 struct genl_info *info)
2213 struct devlink *devlink = info->user_ptr[0];
2214 const struct devlink_ops *ops = devlink->ops;
2215 enum devlink_eswitch_encap_mode encap_mode;
2220 if (info->attrs[DEVLINK_ATTR_ESWITCH_MODE]) {
2221 if (!ops->eswitch_mode_set)
2223 mode = nla_get_u16(info->attrs[DEVLINK_ATTR_ESWITCH_MODE]);
2224 err = ops->eswitch_mode_set(devlink, mode, info->extack);
2229 if (info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]) {
2230 if (!ops->eswitch_inline_mode_set)
2232 inline_mode = nla_get_u8(
2233 info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]);
2234 err = ops->eswitch_inline_mode_set(devlink, inline_mode,
2240 if (info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]) {
2241 if (!ops->eswitch_encap_mode_set)
2243 encap_mode = nla_get_u8(info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]);
2244 err = ops->eswitch_encap_mode_set(devlink, encap_mode,
2253 int devlink_dpipe_match_put(struct sk_buff *skb,
2254 struct devlink_dpipe_match *match)
2256 struct devlink_dpipe_header *header = match->header;
2257 struct devlink_dpipe_field *field = &header->fields[match->field_id];
2258 struct nlattr *match_attr;
2260 match_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_MATCH);
2264 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_MATCH_TYPE, match->type) ||
2265 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, match->header_index) ||
2266 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
2267 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
2268 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
2269 goto nla_put_failure;
2271 nla_nest_end(skb, match_attr);
2275 nla_nest_cancel(skb, match_attr);
2278 EXPORT_SYMBOL_GPL(devlink_dpipe_match_put);
2280 static int devlink_dpipe_matches_put(struct devlink_dpipe_table *table,
2281 struct sk_buff *skb)
2283 struct nlattr *matches_attr;
2285 matches_attr = nla_nest_start_noflag(skb,
2286 DEVLINK_ATTR_DPIPE_TABLE_MATCHES);
2290 if (table->table_ops->matches_dump(table->priv, skb))
2291 goto nla_put_failure;
2293 nla_nest_end(skb, matches_attr);
2297 nla_nest_cancel(skb, matches_attr);
2301 int devlink_dpipe_action_put(struct sk_buff *skb,
2302 struct devlink_dpipe_action *action)
2304 struct devlink_dpipe_header *header = action->header;
2305 struct devlink_dpipe_field *field = &header->fields[action->field_id];
2306 struct nlattr *action_attr;
2308 action_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ACTION);
2312 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_ACTION_TYPE, action->type) ||
2313 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, action->header_index) ||
2314 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
2315 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
2316 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
2317 goto nla_put_failure;
2319 nla_nest_end(skb, action_attr);
2323 nla_nest_cancel(skb, action_attr);
2326 EXPORT_SYMBOL_GPL(devlink_dpipe_action_put);
2328 static int devlink_dpipe_actions_put(struct devlink_dpipe_table *table,
2329 struct sk_buff *skb)
2331 struct nlattr *actions_attr;
2333 actions_attr = nla_nest_start_noflag(skb,
2334 DEVLINK_ATTR_DPIPE_TABLE_ACTIONS);
2338 if (table->table_ops->actions_dump(table->priv, skb))
2339 goto nla_put_failure;
2341 nla_nest_end(skb, actions_attr);
2345 nla_nest_cancel(skb, actions_attr);
2349 static int devlink_dpipe_table_put(struct sk_buff *skb,
2350 struct devlink_dpipe_table *table)
2352 struct nlattr *table_attr;
2355 table_size = table->table_ops->size_get(table->priv);
2356 table_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLE);
2360 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_TABLE_NAME, table->name) ||
2361 nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_SIZE, table_size,
2363 goto nla_put_failure;
2364 if (nla_put_u8(skb, DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED,
2365 table->counters_enabled))
2366 goto nla_put_failure;
2368 if (table->resource_valid) {
2369 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_ID,
2370 table->resource_id, DEVLINK_ATTR_PAD) ||
2371 nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_UNITS,
2372 table->resource_units, DEVLINK_ATTR_PAD))
2373 goto nla_put_failure;
2375 if (devlink_dpipe_matches_put(table, skb))
2376 goto nla_put_failure;
2378 if (devlink_dpipe_actions_put(table, skb))
2379 goto nla_put_failure;
2381 nla_nest_end(skb, table_attr);
2385 nla_nest_cancel(skb, table_attr);
2389 static int devlink_dpipe_send_and_alloc_skb(struct sk_buff **pskb,
2390 struct genl_info *info)
2395 err = genlmsg_reply(*pskb, info);
2399 *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2405 static int devlink_dpipe_tables_fill(struct genl_info *info,
2406 enum devlink_command cmd, int flags,
2407 struct list_head *dpipe_tables,
2408 const char *table_name)
2410 struct devlink *devlink = info->user_ptr[0];
2411 struct devlink_dpipe_table *table;
2412 struct nlattr *tables_attr;
2413 struct sk_buff *skb = NULL;
2414 struct nlmsghdr *nlh;
2420 table = list_first_entry(dpipe_tables,
2421 struct devlink_dpipe_table, list);
2423 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2427 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
2428 &devlink_nl_family, NLM_F_MULTI, cmd);
2434 if (devlink_nl_put_handle(skb, devlink))
2435 goto nla_put_failure;
2436 tables_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLES);
2438 goto nla_put_failure;
2442 list_for_each_entry_from(table, dpipe_tables, list) {
2444 err = devlink_dpipe_table_put(skb, table);
2452 if (!strcmp(table->name, table_name)) {
2453 err = devlink_dpipe_table_put(skb, table);
2461 nla_nest_end(skb, tables_attr);
2462 genlmsg_end(skb, hdr);
2467 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
2468 NLMSG_DONE, 0, flags | NLM_F_MULTI);
2470 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2476 return genlmsg_reply(skb, info);
2485 static int devlink_nl_cmd_dpipe_table_get(struct sk_buff *skb,
2486 struct genl_info *info)
2488 struct devlink *devlink = info->user_ptr[0];
2489 const char *table_name = NULL;
2491 if (info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
2492 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
2494 return devlink_dpipe_tables_fill(info, DEVLINK_CMD_DPIPE_TABLE_GET, 0,
2495 &devlink->dpipe_table_list,
2499 static int devlink_dpipe_value_put(struct sk_buff *skb,
2500 struct devlink_dpipe_value *value)
2502 if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE,
2503 value->value_size, value->value))
2506 if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE_MASK,
2507 value->value_size, value->mask))
2509 if (value->mapping_valid)
2510 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_VALUE_MAPPING,
2511 value->mapping_value))
2516 static int devlink_dpipe_action_value_put(struct sk_buff *skb,
2517 struct devlink_dpipe_value *value)
2521 if (devlink_dpipe_action_put(skb, value->action))
2523 if (devlink_dpipe_value_put(skb, value))
2528 static int devlink_dpipe_action_values_put(struct sk_buff *skb,
2529 struct devlink_dpipe_value *values,
2530 unsigned int values_count)
2532 struct nlattr *action_attr;
2536 for (i = 0; i < values_count; i++) {
2537 action_attr = nla_nest_start_noflag(skb,
2538 DEVLINK_ATTR_DPIPE_ACTION_VALUE);
2541 err = devlink_dpipe_action_value_put(skb, &values[i]);
2543 goto err_action_value_put;
2544 nla_nest_end(skb, action_attr);
2548 err_action_value_put:
2549 nla_nest_cancel(skb, action_attr);
2553 static int devlink_dpipe_match_value_put(struct sk_buff *skb,
2554 struct devlink_dpipe_value *value)
2558 if (devlink_dpipe_match_put(skb, value->match))
2560 if (devlink_dpipe_value_put(skb, value))
2565 static int devlink_dpipe_match_values_put(struct sk_buff *skb,
2566 struct devlink_dpipe_value *values,
2567 unsigned int values_count)
2569 struct nlattr *match_attr;
2573 for (i = 0; i < values_count; i++) {
2574 match_attr = nla_nest_start_noflag(skb,
2575 DEVLINK_ATTR_DPIPE_MATCH_VALUE);
2578 err = devlink_dpipe_match_value_put(skb, &values[i]);
2580 goto err_match_value_put;
2581 nla_nest_end(skb, match_attr);
2585 err_match_value_put:
2586 nla_nest_cancel(skb, match_attr);
2590 static int devlink_dpipe_entry_put(struct sk_buff *skb,
2591 struct devlink_dpipe_entry *entry)
2593 struct nlattr *entry_attr, *matches_attr, *actions_attr;
2596 entry_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ENTRY);
2600 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_INDEX, entry->index,
2602 goto nla_put_failure;
2603 if (entry->counter_valid)
2604 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_COUNTER,
2605 entry->counter, DEVLINK_ATTR_PAD))
2606 goto nla_put_failure;
2608 matches_attr = nla_nest_start_noflag(skb,
2609 DEVLINK_ATTR_DPIPE_ENTRY_MATCH_VALUES);
2611 goto nla_put_failure;
2613 err = devlink_dpipe_match_values_put(skb, entry->match_values,
2614 entry->match_values_count);
2616 nla_nest_cancel(skb, matches_attr);
2617 goto err_match_values_put;
2619 nla_nest_end(skb, matches_attr);
2621 actions_attr = nla_nest_start_noflag(skb,
2622 DEVLINK_ATTR_DPIPE_ENTRY_ACTION_VALUES);
2624 goto nla_put_failure;
2626 err = devlink_dpipe_action_values_put(skb, entry->action_values,
2627 entry->action_values_count);
2629 nla_nest_cancel(skb, actions_attr);
2630 goto err_action_values_put;
2632 nla_nest_end(skb, actions_attr);
2634 nla_nest_end(skb, entry_attr);
2639 err_match_values_put:
2640 err_action_values_put:
2641 nla_nest_cancel(skb, entry_attr);
2645 static struct devlink_dpipe_table *
2646 devlink_dpipe_table_find(struct list_head *dpipe_tables,
2647 const char *table_name, struct devlink *devlink)
2649 struct devlink_dpipe_table *table;
2650 list_for_each_entry_rcu(table, dpipe_tables, list,
2651 lockdep_is_held(&devlink->lock)) {
2652 if (!strcmp(table->name, table_name))
2658 int devlink_dpipe_entry_ctx_prepare(struct devlink_dpipe_dump_ctx *dump_ctx)
2660 struct devlink *devlink;
2663 err = devlink_dpipe_send_and_alloc_skb(&dump_ctx->skb,
2668 dump_ctx->hdr = genlmsg_put(dump_ctx->skb,
2669 dump_ctx->info->snd_portid,
2670 dump_ctx->info->snd_seq,
2671 &devlink_nl_family, NLM_F_MULTI,
2674 goto nla_put_failure;
2676 devlink = dump_ctx->info->user_ptr[0];
2677 if (devlink_nl_put_handle(dump_ctx->skb, devlink))
2678 goto nla_put_failure;
2679 dump_ctx->nest = nla_nest_start_noflag(dump_ctx->skb,
2680 DEVLINK_ATTR_DPIPE_ENTRIES);
2681 if (!dump_ctx->nest)
2682 goto nla_put_failure;
2686 nlmsg_free(dump_ctx->skb);
2689 EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_prepare);
2691 int devlink_dpipe_entry_ctx_append(struct devlink_dpipe_dump_ctx *dump_ctx,
2692 struct devlink_dpipe_entry *entry)
2694 return devlink_dpipe_entry_put(dump_ctx->skb, entry);
2696 EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_append);
2698 int devlink_dpipe_entry_ctx_close(struct devlink_dpipe_dump_ctx *dump_ctx)
2700 nla_nest_end(dump_ctx->skb, dump_ctx->nest);
2701 genlmsg_end(dump_ctx->skb, dump_ctx->hdr);
2704 EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_close);
2706 void devlink_dpipe_entry_clear(struct devlink_dpipe_entry *entry)
2709 unsigned int value_count, value_index;
2710 struct devlink_dpipe_value *value;
2712 value = entry->action_values;
2713 value_count = entry->action_values_count;
2714 for (value_index = 0; value_index < value_count; value_index++) {
2715 kfree(value[value_index].value);
2716 kfree(value[value_index].mask);
2719 value = entry->match_values;
2720 value_count = entry->match_values_count;
2721 for (value_index = 0; value_index < value_count; value_index++) {
2722 kfree(value[value_index].value);
2723 kfree(value[value_index].mask);
2726 EXPORT_SYMBOL(devlink_dpipe_entry_clear);
2728 static int devlink_dpipe_entries_fill(struct genl_info *info,
2729 enum devlink_command cmd, int flags,
2730 struct devlink_dpipe_table *table)
2732 struct devlink_dpipe_dump_ctx dump_ctx;
2733 struct nlmsghdr *nlh;
2736 dump_ctx.skb = NULL;
2738 dump_ctx.info = info;
2740 err = table->table_ops->entries_dump(table->priv,
2741 table->counters_enabled,
2747 nlh = nlmsg_put(dump_ctx.skb, info->snd_portid, info->snd_seq,
2748 NLMSG_DONE, 0, flags | NLM_F_MULTI);
2750 err = devlink_dpipe_send_and_alloc_skb(&dump_ctx.skb, info);
2755 return genlmsg_reply(dump_ctx.skb, info);
2758 static int devlink_nl_cmd_dpipe_entries_get(struct sk_buff *skb,
2759 struct genl_info *info)
2761 struct devlink *devlink = info->user_ptr[0];
2762 struct devlink_dpipe_table *table;
2763 const char *table_name;
2765 if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
2768 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
2769 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2770 table_name, devlink);
2774 if (!table->table_ops->entries_dump)
2777 return devlink_dpipe_entries_fill(info, DEVLINK_CMD_DPIPE_ENTRIES_GET,
2781 static int devlink_dpipe_fields_put(struct sk_buff *skb,
2782 const struct devlink_dpipe_header *header)
2784 struct devlink_dpipe_field *field;
2785 struct nlattr *field_attr;
2788 for (i = 0; i < header->fields_count; i++) {
2789 field = &header->fields[i];
2790 field_attr = nla_nest_start_noflag(skb,
2791 DEVLINK_ATTR_DPIPE_FIELD);
2794 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_FIELD_NAME, field->name) ||
2795 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
2796 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_BITWIDTH, field->bitwidth) ||
2797 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_MAPPING_TYPE, field->mapping_type))
2798 goto nla_put_failure;
2799 nla_nest_end(skb, field_attr);
2804 nla_nest_cancel(skb, field_attr);
2808 static int devlink_dpipe_header_put(struct sk_buff *skb,
2809 struct devlink_dpipe_header *header)
2811 struct nlattr *fields_attr, *header_attr;
2814 header_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADER);
2818 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_HEADER_NAME, header->name) ||
2819 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
2820 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
2821 goto nla_put_failure;
2823 fields_attr = nla_nest_start_noflag(skb,
2824 DEVLINK_ATTR_DPIPE_HEADER_FIELDS);
2826 goto nla_put_failure;
2828 err = devlink_dpipe_fields_put(skb, header);
2830 nla_nest_cancel(skb, fields_attr);
2831 goto nla_put_failure;
2833 nla_nest_end(skb, fields_attr);
2834 nla_nest_end(skb, header_attr);
2839 nla_nest_cancel(skb, header_attr);
2843 static int devlink_dpipe_headers_fill(struct genl_info *info,
2844 enum devlink_command cmd, int flags,
2845 struct devlink_dpipe_headers *
2848 struct devlink *devlink = info->user_ptr[0];
2849 struct nlattr *headers_attr;
2850 struct sk_buff *skb = NULL;
2851 struct nlmsghdr *nlh;
2858 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2862 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
2863 &devlink_nl_family, NLM_F_MULTI, cmd);
2869 if (devlink_nl_put_handle(skb, devlink))
2870 goto nla_put_failure;
2871 headers_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADERS);
2873 goto nla_put_failure;
2876 for (; i < dpipe_headers->headers_count; i++) {
2877 err = devlink_dpipe_header_put(skb, dpipe_headers->headers[i]);
2885 nla_nest_end(skb, headers_attr);
2886 genlmsg_end(skb, hdr);
2887 if (i != dpipe_headers->headers_count)
2891 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
2892 NLMSG_DONE, 0, flags | NLM_F_MULTI);
2894 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2899 return genlmsg_reply(skb, info);
2908 static int devlink_nl_cmd_dpipe_headers_get(struct sk_buff *skb,
2909 struct genl_info *info)
2911 struct devlink *devlink = info->user_ptr[0];
2913 if (!devlink->dpipe_headers)
2915 return devlink_dpipe_headers_fill(info, DEVLINK_CMD_DPIPE_HEADERS_GET,
2916 0, devlink->dpipe_headers);
2919 static int devlink_dpipe_table_counters_set(struct devlink *devlink,
2920 const char *table_name,
2923 struct devlink_dpipe_table *table;
2925 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2926 table_name, devlink);
2930 if (table->counter_control_extern)
2933 if (!(table->counters_enabled ^ enable))
2936 table->counters_enabled = enable;
2937 if (table->table_ops->counters_set_update)
2938 table->table_ops->counters_set_update(table->priv, enable);
2942 static int devlink_nl_cmd_dpipe_table_counters_set(struct sk_buff *skb,
2943 struct genl_info *info)
2945 struct devlink *devlink = info->user_ptr[0];
2946 const char *table_name;
2947 bool counters_enable;
2949 if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME] ||
2950 !info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED])
2953 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
2954 counters_enable = !!nla_get_u8(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED]);
2956 return devlink_dpipe_table_counters_set(devlink, table_name,
2960 static struct devlink_resource *
2961 devlink_resource_find(struct devlink *devlink,
2962 struct devlink_resource *resource, u64 resource_id)
2964 struct list_head *resource_list;
2967 resource_list = &resource->resource_list;
2969 resource_list = &devlink->resource_list;
2971 list_for_each_entry(resource, resource_list, list) {
2972 struct devlink_resource *child_resource;
2974 if (resource->id == resource_id)
2977 child_resource = devlink_resource_find(devlink, resource,
2980 return child_resource;
2986 devlink_resource_validate_children(struct devlink_resource *resource)
2988 struct devlink_resource *child_resource;
2989 bool size_valid = true;
2992 if (list_empty(&resource->resource_list))
2995 list_for_each_entry(child_resource, &resource->resource_list, list)
2996 parts_size += child_resource->size_new;
2998 if (parts_size > resource->size_new)
3001 resource->size_valid = size_valid;
3005 devlink_resource_validate_size(struct devlink_resource *resource, u64 size,
3006 struct netlink_ext_ack *extack)
3011 if (size > resource->size_params.size_max) {
3012 NL_SET_ERR_MSG_MOD(extack, "Size larger than maximum");
3016 if (size < resource->size_params.size_min) {
3017 NL_SET_ERR_MSG_MOD(extack, "Size smaller than minimum");
3021 div64_u64_rem(size, resource->size_params.size_granularity, &reminder);
3023 NL_SET_ERR_MSG_MOD(extack, "Wrong granularity");
3030 static int devlink_nl_cmd_resource_set(struct sk_buff *skb,
3031 struct genl_info *info)
3033 struct devlink *devlink = info->user_ptr[0];
3034 struct devlink_resource *resource;
3039 if (!info->attrs[DEVLINK_ATTR_RESOURCE_ID] ||
3040 !info->attrs[DEVLINK_ATTR_RESOURCE_SIZE])
3042 resource_id = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_ID]);
3044 resource = devlink_resource_find(devlink, NULL, resource_id);
3048 size = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_SIZE]);
3049 err = devlink_resource_validate_size(resource, size, info->extack);
3053 resource->size_new = size;
3054 devlink_resource_validate_children(resource);
3055 if (resource->parent)
3056 devlink_resource_validate_children(resource->parent);
3061 devlink_resource_size_params_put(struct devlink_resource *resource,
3062 struct sk_buff *skb)
3064 struct devlink_resource_size_params *size_params;
3066 size_params = &resource->size_params;
3067 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_GRAN,
3068 size_params->size_granularity, DEVLINK_ATTR_PAD) ||
3069 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MAX,
3070 size_params->size_max, DEVLINK_ATTR_PAD) ||
3071 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MIN,
3072 size_params->size_min, DEVLINK_ATTR_PAD) ||
3073 nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_UNIT, size_params->unit))
3078 static int devlink_resource_occ_put(struct devlink_resource *resource,
3079 struct sk_buff *skb)
3081 if (!resource->occ_get)
3083 return nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_OCC,
3084 resource->occ_get(resource->occ_get_priv),
3088 static int devlink_resource_put(struct devlink *devlink, struct sk_buff *skb,
3089 struct devlink_resource *resource)
3091 struct devlink_resource *child_resource;
3092 struct nlattr *child_resource_attr;
3093 struct nlattr *resource_attr;
3095 resource_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_RESOURCE);
3099 if (nla_put_string(skb, DEVLINK_ATTR_RESOURCE_NAME, resource->name) ||
3100 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE, resource->size,
3101 DEVLINK_ATTR_PAD) ||
3102 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_ID, resource->id,
3104 goto nla_put_failure;
3105 if (resource->size != resource->size_new)
3106 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_NEW,
3107 resource->size_new, DEVLINK_ATTR_PAD);
3108 if (devlink_resource_occ_put(resource, skb))
3109 goto nla_put_failure;
3110 if (devlink_resource_size_params_put(resource, skb))
3111 goto nla_put_failure;
3112 if (list_empty(&resource->resource_list))
3115 if (nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_SIZE_VALID,
3116 resource->size_valid))
3117 goto nla_put_failure;
3119 child_resource_attr = nla_nest_start_noflag(skb,
3120 DEVLINK_ATTR_RESOURCE_LIST);
3121 if (!child_resource_attr)
3122 goto nla_put_failure;
3124 list_for_each_entry(child_resource, &resource->resource_list, list) {
3125 if (devlink_resource_put(devlink, skb, child_resource))
3126 goto resource_put_failure;
3129 nla_nest_end(skb, child_resource_attr);
3131 nla_nest_end(skb, resource_attr);
3134 resource_put_failure:
3135 nla_nest_cancel(skb, child_resource_attr);
3137 nla_nest_cancel(skb, resource_attr);
3141 static int devlink_resource_fill(struct genl_info *info,
3142 enum devlink_command cmd, int flags)
3144 struct devlink *devlink = info->user_ptr[0];
3145 struct devlink_resource *resource;
3146 struct nlattr *resources_attr;
3147 struct sk_buff *skb = NULL;
3148 struct nlmsghdr *nlh;
3154 resource = list_first_entry(&devlink->resource_list,
3155 struct devlink_resource, list);
3157 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
3161 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
3162 &devlink_nl_family, NLM_F_MULTI, cmd);
3168 if (devlink_nl_put_handle(skb, devlink))
3169 goto nla_put_failure;
3171 resources_attr = nla_nest_start_noflag(skb,
3172 DEVLINK_ATTR_RESOURCE_LIST);
3173 if (!resources_attr)
3174 goto nla_put_failure;
3178 list_for_each_entry_from(resource, &devlink->resource_list, list) {
3179 err = devlink_resource_put(devlink, skb, resource);
3182 goto err_resource_put;
3188 nla_nest_end(skb, resources_attr);
3189 genlmsg_end(skb, hdr);
3193 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
3194 NLMSG_DONE, 0, flags | NLM_F_MULTI);
3196 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
3201 return genlmsg_reply(skb, info);
3210 static int devlink_nl_cmd_resource_dump(struct sk_buff *skb,
3211 struct genl_info *info)
3213 struct devlink *devlink = info->user_ptr[0];
3215 if (list_empty(&devlink->resource_list))
3218 return devlink_resource_fill(info, DEVLINK_CMD_RESOURCE_DUMP, 0);
3222 devlink_resources_validate(struct devlink *devlink,
3223 struct devlink_resource *resource,
3224 struct genl_info *info)
3226 struct list_head *resource_list;
3230 resource_list = &resource->resource_list;
3232 resource_list = &devlink->resource_list;
3234 list_for_each_entry(resource, resource_list, list) {
3235 if (!resource->size_valid)
3237 err = devlink_resources_validate(devlink, resource, info);
3244 static struct net *devlink_netns_get(struct sk_buff *skb,
3245 struct genl_info *info)
3247 struct nlattr *netns_pid_attr = info->attrs[DEVLINK_ATTR_NETNS_PID];
3248 struct nlattr *netns_fd_attr = info->attrs[DEVLINK_ATTR_NETNS_FD];
3249 struct nlattr *netns_id_attr = info->attrs[DEVLINK_ATTR_NETNS_ID];
3252 if (!!netns_pid_attr + !!netns_fd_attr + !!netns_id_attr > 1) {
3253 NL_SET_ERR_MSG_MOD(info->extack, "multiple netns identifying attributes specified");
3254 return ERR_PTR(-EINVAL);
3257 if (netns_pid_attr) {
3258 net = get_net_ns_by_pid(nla_get_u32(netns_pid_attr));
3259 } else if (netns_fd_attr) {
3260 net = get_net_ns_by_fd(nla_get_u32(netns_fd_attr));
3261 } else if (netns_id_attr) {
3262 net = get_net_ns_by_id(sock_net(skb->sk),
3263 nla_get_u32(netns_id_attr));
3265 net = ERR_PTR(-EINVAL);
3268 net = ERR_PTR(-EINVAL);
3271 NL_SET_ERR_MSG_MOD(info->extack, "Unknown network namespace");
3272 return ERR_PTR(-EINVAL);
3274 if (!netlink_ns_capable(skb, net->user_ns, CAP_NET_ADMIN)) {
3276 return ERR_PTR(-EPERM);
3281 static void devlink_param_notify(struct devlink *devlink,
3282 unsigned int port_index,
3283 struct devlink_param_item *param_item,
3284 enum devlink_command cmd);
3286 static void devlink_reload_netns_change(struct devlink *devlink,
3287 struct net *dest_net)
3289 struct devlink_param_item *param_item;
3291 /* Userspace needs to be notified about devlink objects
3292 * removed from original and entering new network namespace.
3293 * The rest of the devlink objects are re-created during
3294 * reload process so the notifications are generated separatelly.
3297 list_for_each_entry(param_item, &devlink->param_list, list)
3298 devlink_param_notify(devlink, 0, param_item,
3299 DEVLINK_CMD_PARAM_DEL);
3300 devlink_notify(devlink, DEVLINK_CMD_DEL);
3302 __devlink_net_set(devlink, dest_net);
3304 devlink_notify(devlink, DEVLINK_CMD_NEW);
3305 list_for_each_entry(param_item, &devlink->param_list, list)
3306 devlink_param_notify(devlink, 0, param_item,
3307 DEVLINK_CMD_PARAM_NEW);
3310 static bool devlink_reload_supported(const struct devlink_ops *ops)
3312 return ops->reload_down && ops->reload_up;
3315 static void devlink_reload_failed_set(struct devlink *devlink,
3318 if (devlink->reload_failed == reload_failed)
3320 devlink->reload_failed = reload_failed;
3321 devlink_notify(devlink, DEVLINK_CMD_NEW);
3324 bool devlink_is_reload_failed(const struct devlink *devlink)
3326 return devlink->reload_failed;
3328 EXPORT_SYMBOL_GPL(devlink_is_reload_failed);
3331 __devlink_reload_stats_update(struct devlink *devlink, u32 *reload_stats,
3332 enum devlink_reload_limit limit, u32 actions_performed)
3334 unsigned long actions = actions_performed;
3338 for_each_set_bit(action, &actions, __DEVLINK_RELOAD_ACTION_MAX) {
3339 stat_idx = limit * __DEVLINK_RELOAD_ACTION_MAX + action;
3340 reload_stats[stat_idx]++;
3342 devlink_notify(devlink, DEVLINK_CMD_NEW);
3346 devlink_reload_stats_update(struct devlink *devlink, enum devlink_reload_limit limit,
3347 u32 actions_performed)
3349 __devlink_reload_stats_update(devlink, devlink->stats.reload_stats, limit,
3354 * devlink_remote_reload_actions_performed - Update devlink on reload actions
3355 * performed which are not a direct result of devlink reload call.
3357 * This should be called by a driver after performing reload actions in case it was not
3358 * a result of devlink reload call. For example fw_activate was performed as a result
3359 * of devlink reload triggered fw_activate on another host.
3360 * The motivation for this function is to keep data on reload actions performed on this
3361 * function whether it was done due to direct devlink reload call or not.
3364 * @limit: reload limit
3365 * @actions_performed: bitmask of actions performed
3367 void devlink_remote_reload_actions_performed(struct devlink *devlink,
3368 enum devlink_reload_limit limit,
3369 u32 actions_performed)
3371 if (WARN_ON(!actions_performed ||
3372 actions_performed & BIT(DEVLINK_RELOAD_ACTION_UNSPEC) ||
3373 actions_performed >= BIT(__DEVLINK_RELOAD_ACTION_MAX) ||
3374 limit > DEVLINK_RELOAD_LIMIT_MAX))
3377 __devlink_reload_stats_update(devlink, devlink->stats.remote_reload_stats, limit,
3380 EXPORT_SYMBOL_GPL(devlink_remote_reload_actions_performed);
3382 static int devlink_reload(struct devlink *devlink, struct net *dest_net,
3383 enum devlink_reload_action action, enum devlink_reload_limit limit,
3384 u32 *actions_performed, struct netlink_ext_ack *extack)
3386 u32 remote_reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE];
3389 if (!devlink->reload_enabled)
3392 memcpy(remote_reload_stats, devlink->stats.remote_reload_stats,
3393 sizeof(remote_reload_stats));
3394 err = devlink->ops->reload_down(devlink, !!dest_net, action, limit, extack);
3398 if (dest_net && !net_eq(dest_net, devlink_net(devlink)))
3399 devlink_reload_netns_change(devlink, dest_net);
3401 err = devlink->ops->reload_up(devlink, action, limit, actions_performed, extack);
3402 devlink_reload_failed_set(devlink, !!err);
3406 WARN_ON(!(*actions_performed & BIT(action)));
3407 /* Catch driver on updating the remote action within devlink reload */
3408 WARN_ON(memcmp(remote_reload_stats, devlink->stats.remote_reload_stats,
3409 sizeof(remote_reload_stats)));
3410 devlink_reload_stats_update(devlink, limit, *actions_performed);
3415 devlink_nl_reload_actions_performed_snd(struct devlink *devlink, u32 actions_performed,
3416 enum devlink_command cmd, struct genl_info *info)
3418 struct sk_buff *msg;
3421 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3425 hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq, &devlink_nl_family, 0, cmd);
3429 if (devlink_nl_put_handle(msg, devlink))
3430 goto nla_put_failure;
3432 if (nla_put_bitfield32(msg, DEVLINK_ATTR_RELOAD_ACTIONS_PERFORMED, actions_performed,
3434 goto nla_put_failure;
3435 genlmsg_end(msg, hdr);
3437 return genlmsg_reply(msg, info);
3440 genlmsg_cancel(msg, hdr);
3446 static int devlink_nl_cmd_reload(struct sk_buff *skb, struct genl_info *info)
3448 struct devlink *devlink = info->user_ptr[0];
3449 enum devlink_reload_action action;
3450 enum devlink_reload_limit limit;
3451 struct net *dest_net = NULL;
3452 u32 actions_performed;
3455 if (!devlink_reload_supported(devlink->ops))
3458 err = devlink_resources_validate(devlink, NULL, info);
3460 NL_SET_ERR_MSG_MOD(info->extack, "resources size validation failed");
3464 if (info->attrs[DEVLINK_ATTR_NETNS_PID] ||
3465 info->attrs[DEVLINK_ATTR_NETNS_FD] ||
3466 info->attrs[DEVLINK_ATTR_NETNS_ID]) {
3467 dest_net = devlink_netns_get(skb, info);
3468 if (IS_ERR(dest_net))
3469 return PTR_ERR(dest_net);
3472 if (info->attrs[DEVLINK_ATTR_RELOAD_ACTION])
3473 action = nla_get_u8(info->attrs[DEVLINK_ATTR_RELOAD_ACTION]);
3475 action = DEVLINK_RELOAD_ACTION_DRIVER_REINIT;
3477 if (!devlink_reload_action_is_supported(devlink, action)) {
3478 NL_SET_ERR_MSG_MOD(info->extack,
3479 "Requested reload action is not supported by the driver");
3483 limit = DEVLINK_RELOAD_LIMIT_UNSPEC;
3484 if (info->attrs[DEVLINK_ATTR_RELOAD_LIMITS]) {
3485 struct nla_bitfield32 limits;
3486 u32 limits_selected;
3488 limits = nla_get_bitfield32(info->attrs[DEVLINK_ATTR_RELOAD_LIMITS]);
3489 limits_selected = limits.value & limits.selector;
3490 if (!limits_selected) {
3491 NL_SET_ERR_MSG_MOD(info->extack, "Invalid limit selected");
3494 for (limit = 0 ; limit <= DEVLINK_RELOAD_LIMIT_MAX ; limit++)
3495 if (limits_selected & BIT(limit))
3497 /* UAPI enables multiselection, but currently it is not used */
3498 if (limits_selected != BIT(limit)) {
3499 NL_SET_ERR_MSG_MOD(info->extack,
3500 "Multiselection of limit is not supported");
3503 if (!devlink_reload_limit_is_supported(devlink, limit)) {
3504 NL_SET_ERR_MSG_MOD(info->extack,
3505 "Requested limit is not supported by the driver");
3508 if (devlink_reload_combination_is_invalid(action, limit)) {
3509 NL_SET_ERR_MSG_MOD(info->extack,
3510 "Requested limit is invalid for this action");
3514 err = devlink_reload(devlink, dest_net, action, limit, &actions_performed, info->extack);
3521 /* For backward compatibility generate reply only if attributes used by user */
3522 if (!info->attrs[DEVLINK_ATTR_RELOAD_ACTION] && !info->attrs[DEVLINK_ATTR_RELOAD_LIMITS])
3525 return devlink_nl_reload_actions_performed_snd(devlink, actions_performed,
3526 DEVLINK_CMD_RELOAD, info);
3529 static int devlink_nl_flash_update_fill(struct sk_buff *msg,
3530 struct devlink *devlink,
3531 enum devlink_command cmd,
3532 struct devlink_flash_notify *params)
3536 hdr = genlmsg_put(msg, 0, 0, &devlink_nl_family, 0, cmd);
3540 if (devlink_nl_put_handle(msg, devlink))
3541 goto nla_put_failure;
3543 if (cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS)
3546 if (params->status_msg &&
3547 nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_MSG,
3548 params->status_msg))
3549 goto nla_put_failure;
3550 if (params->component &&
3551 nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_COMPONENT,
3553 goto nla_put_failure;
3554 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_DONE,
3555 params->done, DEVLINK_ATTR_PAD))
3556 goto nla_put_failure;
3557 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TOTAL,
3558 params->total, DEVLINK_ATTR_PAD))
3559 goto nla_put_failure;
3560 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TIMEOUT,
3561 params->timeout, DEVLINK_ATTR_PAD))
3562 goto nla_put_failure;
3565 genlmsg_end(msg, hdr);
3569 genlmsg_cancel(msg, hdr);
3573 static void __devlink_flash_update_notify(struct devlink *devlink,
3574 enum devlink_command cmd,
3575 struct devlink_flash_notify *params)
3577 struct sk_buff *msg;
3580 WARN_ON(cmd != DEVLINK_CMD_FLASH_UPDATE &&
3581 cmd != DEVLINK_CMD_FLASH_UPDATE_END &&
3582 cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS);
3584 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3588 err = devlink_nl_flash_update_fill(msg, devlink, cmd, params);
3592 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
3593 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
3600 static void devlink_flash_update_begin_notify(struct devlink *devlink)
3602 struct devlink_flash_notify params = { 0 };
3604 __devlink_flash_update_notify(devlink,
3605 DEVLINK_CMD_FLASH_UPDATE,
3609 static void devlink_flash_update_end_notify(struct devlink *devlink)
3611 struct devlink_flash_notify params = { 0 };
3613 __devlink_flash_update_notify(devlink,
3614 DEVLINK_CMD_FLASH_UPDATE_END,
3618 void devlink_flash_update_status_notify(struct devlink *devlink,
3619 const char *status_msg,
3620 const char *component,
3622 unsigned long total)
3624 struct devlink_flash_notify params = {
3625 .status_msg = status_msg,
3626 .component = component,
3631 __devlink_flash_update_notify(devlink,
3632 DEVLINK_CMD_FLASH_UPDATE_STATUS,
3635 EXPORT_SYMBOL_GPL(devlink_flash_update_status_notify);
3637 void devlink_flash_update_timeout_notify(struct devlink *devlink,
3638 const char *status_msg,
3639 const char *component,
3640 unsigned long timeout)
3642 struct devlink_flash_notify params = {
3643 .status_msg = status_msg,
3644 .component = component,
3648 __devlink_flash_update_notify(devlink,
3649 DEVLINK_CMD_FLASH_UPDATE_STATUS,
3652 EXPORT_SYMBOL_GPL(devlink_flash_update_timeout_notify);
3654 static int devlink_nl_cmd_flash_update(struct sk_buff *skb,
3655 struct genl_info *info)
3657 struct nlattr *nla_component, *nla_overwrite_mask, *nla_file_name;
3658 struct devlink_flash_update_params params = {};
3659 struct devlink *devlink = info->user_ptr[0];
3660 const char *file_name;
3661 u32 supported_params;
3664 if (!devlink->ops->flash_update)
3667 if (!info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME])
3670 supported_params = devlink->ops->supported_flash_update_params;
3672 nla_component = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_COMPONENT];
3673 if (nla_component) {
3674 if (!(supported_params & DEVLINK_SUPPORT_FLASH_UPDATE_COMPONENT)) {
3675 NL_SET_ERR_MSG_ATTR(info->extack, nla_component,
3676 "component update is not supported by this device");
3679 params.component = nla_data(nla_component);
3682 nla_overwrite_mask = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_OVERWRITE_MASK];
3683 if (nla_overwrite_mask) {
3684 struct nla_bitfield32 sections;
3686 if (!(supported_params & DEVLINK_SUPPORT_FLASH_UPDATE_OVERWRITE_MASK)) {
3687 NL_SET_ERR_MSG_ATTR(info->extack, nla_overwrite_mask,
3688 "overwrite settings are not supported by this device");
3691 sections = nla_get_bitfield32(nla_overwrite_mask);
3692 params.overwrite_mask = sections.value & sections.selector;
3695 nla_file_name = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME];
3696 file_name = nla_data(nla_file_name);
3697 ret = request_firmware(¶ms.fw, file_name, devlink->dev);
3699 NL_SET_ERR_MSG_ATTR(info->extack, nla_file_name, "failed to locate the requested firmware file");
3703 devlink_flash_update_begin_notify(devlink);
3704 ret = devlink->ops->flash_update(devlink, ¶ms, info->extack);
3705 devlink_flash_update_end_notify(devlink);
3707 release_firmware(params.fw);
3712 static const struct devlink_param devlink_param_generic[] = {
3714 .id = DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET,
3715 .name = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_NAME,
3716 .type = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_TYPE,
3719 .id = DEVLINK_PARAM_GENERIC_ID_MAX_MACS,
3720 .name = DEVLINK_PARAM_GENERIC_MAX_MACS_NAME,
3721 .type = DEVLINK_PARAM_GENERIC_MAX_MACS_TYPE,
3724 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_SRIOV,
3725 .name = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_NAME,
3726 .type = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_TYPE,
3729 .id = DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT,
3730 .name = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_NAME,
3731 .type = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_TYPE,
3734 .id = DEVLINK_PARAM_GENERIC_ID_IGNORE_ARI,
3735 .name = DEVLINK_PARAM_GENERIC_IGNORE_ARI_NAME,
3736 .type = DEVLINK_PARAM_GENERIC_IGNORE_ARI_TYPE,
3739 .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX,
3740 .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_NAME,
3741 .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_TYPE,
3744 .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN,
3745 .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_NAME,
3746 .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_TYPE,
3749 .id = DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY,
3750 .name = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_NAME,
3751 .type = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_TYPE,
3754 .id = DEVLINK_PARAM_GENERIC_ID_RESET_DEV_ON_DRV_PROBE,
3755 .name = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_NAME,
3756 .type = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_TYPE,
3759 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_ROCE,
3760 .name = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_NAME,
3761 .type = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_TYPE,
3764 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_REMOTE_DEV_RESET,
3765 .name = DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_NAME,
3766 .type = DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_TYPE,
3770 static int devlink_param_generic_verify(const struct devlink_param *param)
3772 /* verify it match generic parameter by id and name */
3773 if (param->id > DEVLINK_PARAM_GENERIC_ID_MAX)
3775 if (strcmp(param->name, devlink_param_generic[param->id].name))
3778 WARN_ON(param->type != devlink_param_generic[param->id].type);
3783 static int devlink_param_driver_verify(const struct devlink_param *param)
3787 if (param->id <= DEVLINK_PARAM_GENERIC_ID_MAX)
3789 /* verify no such name in generic params */
3790 for (i = 0; i <= DEVLINK_PARAM_GENERIC_ID_MAX; i++)
3791 if (!strcmp(param->name, devlink_param_generic[i].name))
3797 static struct devlink_param_item *
3798 devlink_param_find_by_name(struct list_head *param_list,
3799 const char *param_name)
3801 struct devlink_param_item *param_item;
3803 list_for_each_entry(param_item, param_list, list)
3804 if (!strcmp(param_item->param->name, param_name))
3809 static struct devlink_param_item *
3810 devlink_param_find_by_id(struct list_head *param_list, u32 param_id)
3812 struct devlink_param_item *param_item;
3814 list_for_each_entry(param_item, param_list, list)
3815 if (param_item->param->id == param_id)
3821 devlink_param_cmode_is_supported(const struct devlink_param *param,
3822 enum devlink_param_cmode cmode)
3824 return test_bit(cmode, ¶m->supported_cmodes);
3827 static int devlink_param_get(struct devlink *devlink,
3828 const struct devlink_param *param,
3829 struct devlink_param_gset_ctx *ctx)
3833 return param->get(devlink, param->id, ctx);
3836 static int devlink_param_set(struct devlink *devlink,
3837 const struct devlink_param *param,
3838 struct devlink_param_gset_ctx *ctx)
3842 return param->set(devlink, param->id, ctx);
3846 devlink_param_type_to_nla_type(enum devlink_param_type param_type)
3848 switch (param_type) {
3849 case DEVLINK_PARAM_TYPE_U8:
3851 case DEVLINK_PARAM_TYPE_U16:
3853 case DEVLINK_PARAM_TYPE_U32:
3855 case DEVLINK_PARAM_TYPE_STRING:
3857 case DEVLINK_PARAM_TYPE_BOOL:
3865 devlink_nl_param_value_fill_one(struct sk_buff *msg,
3866 enum devlink_param_type type,
3867 enum devlink_param_cmode cmode,
3868 union devlink_param_value val)
3870 struct nlattr *param_value_attr;
3872 param_value_attr = nla_nest_start_noflag(msg,
3873 DEVLINK_ATTR_PARAM_VALUE);
3874 if (!param_value_attr)
3875 goto nla_put_failure;
3877 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_CMODE, cmode))
3878 goto value_nest_cancel;
3881 case DEVLINK_PARAM_TYPE_U8:
3882 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu8))
3883 goto value_nest_cancel;
3885 case DEVLINK_PARAM_TYPE_U16:
3886 if (nla_put_u16(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu16))
3887 goto value_nest_cancel;
3889 case DEVLINK_PARAM_TYPE_U32:
3890 if (nla_put_u32(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu32))
3891 goto value_nest_cancel;
3893 case DEVLINK_PARAM_TYPE_STRING:
3894 if (nla_put_string(msg, DEVLINK_ATTR_PARAM_VALUE_DATA,
3896 goto value_nest_cancel;
3898 case DEVLINK_PARAM_TYPE_BOOL:
3900 nla_put_flag(msg, DEVLINK_ATTR_PARAM_VALUE_DATA))
3901 goto value_nest_cancel;
3905 nla_nest_end(msg, param_value_attr);
3909 nla_nest_cancel(msg, param_value_attr);
3914 static int devlink_nl_param_fill(struct sk_buff *msg, struct devlink *devlink,
3915 unsigned int port_index,
3916 struct devlink_param_item *param_item,
3917 enum devlink_command cmd,
3918 u32 portid, u32 seq, int flags)
3920 union devlink_param_value param_value[DEVLINK_PARAM_CMODE_MAX + 1];
3921 bool param_value_set[DEVLINK_PARAM_CMODE_MAX + 1] = {};
3922 const struct devlink_param *param = param_item->param;
3923 struct devlink_param_gset_ctx ctx;
3924 struct nlattr *param_values_list;
3925 struct nlattr *param_attr;
3931 /* Get value from driver part to driverinit configuration mode */
3932 for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
3933 if (!devlink_param_cmode_is_supported(param, i))
3935 if (i == DEVLINK_PARAM_CMODE_DRIVERINIT) {
3936 if (!param_item->driverinit_value_valid)
3938 param_value[i] = param_item->driverinit_value;
3940 if (!param_item->published)
3943 err = devlink_param_get(devlink, param, &ctx);
3946 param_value[i] = ctx.val;
3948 param_value_set[i] = true;
3951 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
3955 if (devlink_nl_put_handle(msg, devlink))
3956 goto genlmsg_cancel;
3958 if (cmd == DEVLINK_CMD_PORT_PARAM_GET ||
3959 cmd == DEVLINK_CMD_PORT_PARAM_NEW ||
3960 cmd == DEVLINK_CMD_PORT_PARAM_DEL)
3961 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, port_index))
3962 goto genlmsg_cancel;
3964 param_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PARAM);
3966 goto genlmsg_cancel;
3967 if (nla_put_string(msg, DEVLINK_ATTR_PARAM_NAME, param->name))
3968 goto param_nest_cancel;
3969 if (param->generic && nla_put_flag(msg, DEVLINK_ATTR_PARAM_GENERIC))
3970 goto param_nest_cancel;
3972 nla_type = devlink_param_type_to_nla_type(param->type);
3974 goto param_nest_cancel;
3975 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_TYPE, nla_type))
3976 goto param_nest_cancel;
3978 param_values_list = nla_nest_start_noflag(msg,
3979 DEVLINK_ATTR_PARAM_VALUES_LIST);
3980 if (!param_values_list)
3981 goto param_nest_cancel;
3983 for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
3984 if (!param_value_set[i])
3986 err = devlink_nl_param_value_fill_one(msg, param->type,
3989 goto values_list_nest_cancel;
3992 nla_nest_end(msg, param_values_list);
3993 nla_nest_end(msg, param_attr);
3994 genlmsg_end(msg, hdr);
3997 values_list_nest_cancel:
3998 nla_nest_end(msg, param_values_list);
4000 nla_nest_cancel(msg, param_attr);
4002 genlmsg_cancel(msg, hdr);
4006 static void devlink_param_notify(struct devlink *devlink,
4007 unsigned int port_index,
4008 struct devlink_param_item *param_item,
4009 enum devlink_command cmd)
4011 struct sk_buff *msg;
4014 WARN_ON(cmd != DEVLINK_CMD_PARAM_NEW && cmd != DEVLINK_CMD_PARAM_DEL &&
4015 cmd != DEVLINK_CMD_PORT_PARAM_NEW &&
4016 cmd != DEVLINK_CMD_PORT_PARAM_DEL);
4018 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4021 err = devlink_nl_param_fill(msg, devlink, port_index, param_item, cmd,
4028 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
4029 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
4032 static int devlink_nl_cmd_param_get_dumpit(struct sk_buff *msg,
4033 struct netlink_callback *cb)
4035 struct devlink_param_item *param_item;
4036 struct devlink *devlink;
4037 int start = cb->args[0];
4041 mutex_lock(&devlink_mutex);
4042 list_for_each_entry(devlink, &devlink_list, list) {
4043 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
4045 mutex_lock(&devlink->lock);
4046 list_for_each_entry(param_item, &devlink->param_list, list) {
4051 err = devlink_nl_param_fill(msg, devlink, 0, param_item,
4052 DEVLINK_CMD_PARAM_GET,
4053 NETLINK_CB(cb->skb).portid,
4056 if (err == -EOPNOTSUPP) {
4059 mutex_unlock(&devlink->lock);
4064 mutex_unlock(&devlink->lock);
4067 mutex_unlock(&devlink_mutex);
4069 if (err != -EMSGSIZE)
4077 devlink_param_type_get_from_info(struct genl_info *info,
4078 enum devlink_param_type *param_type)
4080 if (!info->attrs[DEVLINK_ATTR_PARAM_TYPE])
4083 switch (nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_TYPE])) {
4085 *param_type = DEVLINK_PARAM_TYPE_U8;
4088 *param_type = DEVLINK_PARAM_TYPE_U16;
4091 *param_type = DEVLINK_PARAM_TYPE_U32;
4094 *param_type = DEVLINK_PARAM_TYPE_STRING;
4097 *param_type = DEVLINK_PARAM_TYPE_BOOL;
4107 devlink_param_value_get_from_info(const struct devlink_param *param,
4108 struct genl_info *info,
4109 union devlink_param_value *value)
4111 struct nlattr *param_data;
4114 param_data = info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA];
4116 if (param->type != DEVLINK_PARAM_TYPE_BOOL && !param_data)
4119 switch (param->type) {
4120 case DEVLINK_PARAM_TYPE_U8:
4121 if (nla_len(param_data) != sizeof(u8))
4123 value->vu8 = nla_get_u8(param_data);
4125 case DEVLINK_PARAM_TYPE_U16:
4126 if (nla_len(param_data) != sizeof(u16))
4128 value->vu16 = nla_get_u16(param_data);
4130 case DEVLINK_PARAM_TYPE_U32:
4131 if (nla_len(param_data) != sizeof(u32))
4133 value->vu32 = nla_get_u32(param_data);
4135 case DEVLINK_PARAM_TYPE_STRING:
4136 len = strnlen(nla_data(param_data), nla_len(param_data));
4137 if (len == nla_len(param_data) ||
4138 len >= __DEVLINK_PARAM_MAX_STRING_VALUE)
4140 strcpy(value->vstr, nla_data(param_data));
4142 case DEVLINK_PARAM_TYPE_BOOL:
4143 if (param_data && nla_len(param_data))
4145 value->vbool = nla_get_flag(param_data);
4151 static struct devlink_param_item *
4152 devlink_param_get_from_info(struct list_head *param_list,
4153 struct genl_info *info)
4157 if (!info->attrs[DEVLINK_ATTR_PARAM_NAME])
4160 param_name = nla_data(info->attrs[DEVLINK_ATTR_PARAM_NAME]);
4161 return devlink_param_find_by_name(param_list, param_name);
4164 static int devlink_nl_cmd_param_get_doit(struct sk_buff *skb,
4165 struct genl_info *info)
4167 struct devlink *devlink = info->user_ptr[0];
4168 struct devlink_param_item *param_item;
4169 struct sk_buff *msg;
4172 param_item = devlink_param_get_from_info(&devlink->param_list, info);
4176 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4180 err = devlink_nl_param_fill(msg, devlink, 0, param_item,
4181 DEVLINK_CMD_PARAM_GET,
4182 info->snd_portid, info->snd_seq, 0);
4188 return genlmsg_reply(msg, info);
4191 static int __devlink_nl_cmd_param_set_doit(struct devlink *devlink,
4192 unsigned int port_index,
4193 struct list_head *param_list,
4194 struct genl_info *info,
4195 enum devlink_command cmd)
4197 enum devlink_param_type param_type;
4198 struct devlink_param_gset_ctx ctx;
4199 enum devlink_param_cmode cmode;
4200 struct devlink_param_item *param_item;
4201 const struct devlink_param *param;
4202 union devlink_param_value value;
4205 param_item = devlink_param_get_from_info(param_list, info);
4208 param = param_item->param;
4209 err = devlink_param_type_get_from_info(info, ¶m_type);
4212 if (param_type != param->type)
4214 err = devlink_param_value_get_from_info(param, info, &value);
4217 if (param->validate) {
4218 err = param->validate(devlink, param->id, value, info->extack);
4223 if (!info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE])
4225 cmode = nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE]);
4226 if (!devlink_param_cmode_is_supported(param, cmode))
4229 if (cmode == DEVLINK_PARAM_CMODE_DRIVERINIT) {
4230 if (param->type == DEVLINK_PARAM_TYPE_STRING)
4231 strcpy(param_item->driverinit_value.vstr, value.vstr);
4233 param_item->driverinit_value = value;
4234 param_item->driverinit_value_valid = true;
4240 err = devlink_param_set(devlink, param, &ctx);
4245 devlink_param_notify(devlink, port_index, param_item, cmd);
4249 static int devlink_nl_cmd_param_set_doit(struct sk_buff *skb,
4250 struct genl_info *info)
4252 struct devlink *devlink = info->user_ptr[0];
4254 return __devlink_nl_cmd_param_set_doit(devlink, 0, &devlink->param_list,
4255 info, DEVLINK_CMD_PARAM_NEW);
4258 static int devlink_param_register_one(struct devlink *devlink,
4259 unsigned int port_index,
4260 struct list_head *param_list,
4261 const struct devlink_param *param,
4262 enum devlink_command cmd)
4264 struct devlink_param_item *param_item;
4266 if (devlink_param_find_by_name(param_list, param->name))
4269 if (param->supported_cmodes == BIT(DEVLINK_PARAM_CMODE_DRIVERINIT))
4270 WARN_ON(param->get || param->set);
4272 WARN_ON(!param->get || !param->set);
4274 param_item = kzalloc(sizeof(*param_item), GFP_KERNEL);
4277 param_item->param = param;
4279 list_add_tail(¶m_item->list, param_list);
4280 devlink_param_notify(devlink, port_index, param_item, cmd);
4284 static void devlink_param_unregister_one(struct devlink *devlink,
4285 unsigned int port_index,
4286 struct list_head *param_list,
4287 const struct devlink_param *param,
4288 enum devlink_command cmd)
4290 struct devlink_param_item *param_item;
4292 param_item = devlink_param_find_by_name(param_list, param->name);
4293 WARN_ON(!param_item);
4294 devlink_param_notify(devlink, port_index, param_item, cmd);
4295 list_del(¶m_item->list);
4299 static int devlink_nl_cmd_port_param_get_dumpit(struct sk_buff *msg,
4300 struct netlink_callback *cb)
4302 struct devlink_param_item *param_item;
4303 struct devlink_port *devlink_port;
4304 struct devlink *devlink;
4305 int start = cb->args[0];
4309 mutex_lock(&devlink_mutex);
4310 list_for_each_entry(devlink, &devlink_list, list) {
4311 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
4313 mutex_lock(&devlink->lock);
4314 list_for_each_entry(devlink_port, &devlink->port_list, list) {
4315 list_for_each_entry(param_item,
4316 &devlink_port->param_list, list) {
4321 err = devlink_nl_param_fill(msg,
4322 devlink_port->devlink,
4323 devlink_port->index, param_item,
4324 DEVLINK_CMD_PORT_PARAM_GET,
4325 NETLINK_CB(cb->skb).portid,
4328 if (err == -EOPNOTSUPP) {
4331 mutex_unlock(&devlink->lock);
4337 mutex_unlock(&devlink->lock);
4340 mutex_unlock(&devlink_mutex);
4342 if (err != -EMSGSIZE)
4349 static int devlink_nl_cmd_port_param_get_doit(struct sk_buff *skb,
4350 struct genl_info *info)
4352 struct devlink_port *devlink_port = info->user_ptr[1];
4353 struct devlink_param_item *param_item;
4354 struct sk_buff *msg;
4357 param_item = devlink_param_get_from_info(&devlink_port->param_list,
4362 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4366 err = devlink_nl_param_fill(msg, devlink_port->devlink,
4367 devlink_port->index, param_item,
4368 DEVLINK_CMD_PORT_PARAM_GET,
4369 info->snd_portid, info->snd_seq, 0);
4375 return genlmsg_reply(msg, info);
4378 static int devlink_nl_cmd_port_param_set_doit(struct sk_buff *skb,
4379 struct genl_info *info)
4381 struct devlink_port *devlink_port = info->user_ptr[1];
4383 return __devlink_nl_cmd_param_set_doit(devlink_port->devlink,
4384 devlink_port->index,
4385 &devlink_port->param_list, info,
4386 DEVLINK_CMD_PORT_PARAM_NEW);
4389 static int devlink_nl_region_snapshot_id_put(struct sk_buff *msg,
4390 struct devlink *devlink,
4391 struct devlink_snapshot *snapshot)
4393 struct nlattr *snap_attr;
4396 snap_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_SNAPSHOT);
4400 err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID, snapshot->id);
4402 goto nla_put_failure;
4404 nla_nest_end(msg, snap_attr);
4408 nla_nest_cancel(msg, snap_attr);
4412 static int devlink_nl_region_snapshots_id_put(struct sk_buff *msg,
4413 struct devlink *devlink,
4414 struct devlink_region *region)
4416 struct devlink_snapshot *snapshot;
4417 struct nlattr *snapshots_attr;
4420 snapshots_attr = nla_nest_start_noflag(msg,
4421 DEVLINK_ATTR_REGION_SNAPSHOTS);
4422 if (!snapshots_attr)
4425 list_for_each_entry(snapshot, ®ion->snapshot_list, list) {
4426 err = devlink_nl_region_snapshot_id_put(msg, devlink, snapshot);
4428 goto nla_put_failure;
4431 nla_nest_end(msg, snapshots_attr);
4435 nla_nest_cancel(msg, snapshots_attr);
4439 static int devlink_nl_region_fill(struct sk_buff *msg, struct devlink *devlink,
4440 enum devlink_command cmd, u32 portid,
4442 struct devlink_region *region)
4447 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
4451 err = devlink_nl_put_handle(msg, devlink);
4453 goto nla_put_failure;
4456 err = nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
4457 region->port->index);
4459 goto nla_put_failure;
4462 err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME, region->ops->name);
4464 goto nla_put_failure;
4466 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
4470 goto nla_put_failure;
4472 err = devlink_nl_region_snapshots_id_put(msg, devlink, region);
4474 goto nla_put_failure;
4476 genlmsg_end(msg, hdr);
4480 genlmsg_cancel(msg, hdr);
4484 static struct sk_buff *
4485 devlink_nl_region_notify_build(struct devlink_region *region,
4486 struct devlink_snapshot *snapshot,
4487 enum devlink_command cmd, u32 portid, u32 seq)
4489 struct devlink *devlink = region->devlink;
4490 struct sk_buff *msg;
4495 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4497 return ERR_PTR(-ENOMEM);
4499 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, 0, cmd);
4505 err = devlink_nl_put_handle(msg, devlink);
4507 goto out_cancel_msg;
4510 err = nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
4511 region->port->index);
4513 goto out_cancel_msg;
4516 err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME,
4519 goto out_cancel_msg;
4522 err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID,
4525 goto out_cancel_msg;
4527 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
4528 region->size, DEVLINK_ATTR_PAD);
4530 goto out_cancel_msg;
4532 genlmsg_end(msg, hdr);
4537 genlmsg_cancel(msg, hdr);
4540 return ERR_PTR(err);
4543 static void devlink_nl_region_notify(struct devlink_region *region,
4544 struct devlink_snapshot *snapshot,
4545 enum devlink_command cmd)
4547 struct devlink *devlink = region->devlink;
4548 struct sk_buff *msg;
4550 WARN_ON(cmd != DEVLINK_CMD_REGION_NEW && cmd != DEVLINK_CMD_REGION_DEL);
4552 msg = devlink_nl_region_notify_build(region, snapshot, cmd, 0, 0);
4556 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
4557 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
4561 * __devlink_snapshot_id_increment - Increment number of snapshots using an id
4562 * @devlink: devlink instance
4563 * @id: the snapshot id
4565 * Track when a new snapshot begins using an id. Load the count for the
4566 * given id from the snapshot xarray, increment it, and store it back.
4568 * Called when a new snapshot is created with the given id.
4570 * The id *must* have been previously allocated by
4571 * devlink_region_snapshot_id_get().
4573 * Returns 0 on success, or an error on failure.
4575 static int __devlink_snapshot_id_increment(struct devlink *devlink, u32 id)
4577 unsigned long count;
4580 lockdep_assert_held(&devlink->lock);
4582 p = xa_load(&devlink->snapshot_ids, id);
4586 if (WARN_ON(!xa_is_value(p)))
4589 count = xa_to_value(p);
4592 return xa_err(xa_store(&devlink->snapshot_ids, id, xa_mk_value(count),
4597 * __devlink_snapshot_id_decrement - Decrease number of snapshots using an id
4598 * @devlink: devlink instance
4599 * @id: the snapshot id
4601 * Track when a snapshot is deleted and stops using an id. Load the count
4602 * for the given id from the snapshot xarray, decrement it, and store it
4605 * If the count reaches zero, erase this id from the xarray, freeing it
4606 * up for future re-use by devlink_region_snapshot_id_get().
4608 * Called when a snapshot using the given id is deleted, and when the
4609 * initial allocator of the id is finished using it.
4611 static void __devlink_snapshot_id_decrement(struct devlink *devlink, u32 id)
4613 unsigned long count;
4616 lockdep_assert_held(&devlink->lock);
4618 p = xa_load(&devlink->snapshot_ids, id);
4622 if (WARN_ON(!xa_is_value(p)))
4625 count = xa_to_value(p);
4629 xa_store(&devlink->snapshot_ids, id, xa_mk_value(count),
4632 /* If this was the last user, we can erase this id */
4633 xa_erase(&devlink->snapshot_ids, id);
4638 * __devlink_snapshot_id_insert - Insert a specific snapshot ID
4639 * @devlink: devlink instance
4640 * @id: the snapshot id
4642 * Mark the given snapshot id as used by inserting a zero value into the
4645 * This must be called while holding the devlink instance lock. Unlike
4646 * devlink_snapshot_id_get, the initial reference count is zero, not one.
4647 * It is expected that the id will immediately be used before
4648 * releasing the devlink instance lock.
4650 * Returns zero on success, or an error code if the snapshot id could not
4653 static int __devlink_snapshot_id_insert(struct devlink *devlink, u32 id)
4655 lockdep_assert_held(&devlink->lock);
4657 if (xa_load(&devlink->snapshot_ids, id))
4660 return xa_err(xa_store(&devlink->snapshot_ids, id, xa_mk_value(0),
4665 * __devlink_region_snapshot_id_get - get snapshot ID
4666 * @devlink: devlink instance
4667 * @id: storage to return snapshot id
4669 * Allocates a new snapshot id. Returns zero on success, or a negative
4670 * error on failure. Must be called while holding the devlink instance
4673 * Snapshot IDs are tracked using an xarray which stores the number of
4674 * users of the snapshot id.
4676 * Note that the caller of this function counts as a 'user', in order to
4677 * avoid race conditions. The caller must release its hold on the
4678 * snapshot by using devlink_region_snapshot_id_put.
4680 static int __devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id)
4682 lockdep_assert_held(&devlink->lock);
4684 return xa_alloc(&devlink->snapshot_ids, id, xa_mk_value(1),
4685 xa_limit_32b, GFP_KERNEL);
4689 * __devlink_region_snapshot_create - create a new snapshot
4690 * This will add a new snapshot of a region. The snapshot
4691 * will be stored on the region struct and can be accessed
4692 * from devlink. This is useful for future analyses of snapshots.
4693 * Multiple snapshots can be created on a region.
4694 * The @snapshot_id should be obtained using the getter function.
4696 * Must be called only while holding the devlink instance lock.
4698 * @region: devlink region of the snapshot
4699 * @data: snapshot data
4700 * @snapshot_id: snapshot id to be created
4703 __devlink_region_snapshot_create(struct devlink_region *region,
4704 u8 *data, u32 snapshot_id)
4706 struct devlink *devlink = region->devlink;
4707 struct devlink_snapshot *snapshot;
4710 lockdep_assert_held(&devlink->lock);
4712 /* check if region can hold one more snapshot */
4713 if (region->cur_snapshots == region->max_snapshots)
4716 if (devlink_region_snapshot_get_by_id(region, snapshot_id))
4719 snapshot = kzalloc(sizeof(*snapshot), GFP_KERNEL);
4723 err = __devlink_snapshot_id_increment(devlink, snapshot_id);
4725 goto err_snapshot_id_increment;
4727 snapshot->id = snapshot_id;
4728 snapshot->region = region;
4729 snapshot->data = data;
4731 list_add_tail(&snapshot->list, ®ion->snapshot_list);
4733 region->cur_snapshots++;
4735 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_NEW);
4738 err_snapshot_id_increment:
4743 static void devlink_region_snapshot_del(struct devlink_region *region,
4744 struct devlink_snapshot *snapshot)
4746 struct devlink *devlink = region->devlink;
4748 lockdep_assert_held(&devlink->lock);
4750 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_DEL);
4751 region->cur_snapshots--;
4752 list_del(&snapshot->list);
4753 region->ops->destructor(snapshot->data);
4754 __devlink_snapshot_id_decrement(devlink, snapshot->id);
4758 static int devlink_nl_cmd_region_get_doit(struct sk_buff *skb,
4759 struct genl_info *info)
4761 struct devlink *devlink = info->user_ptr[0];
4762 struct devlink_port *port = NULL;
4763 struct devlink_region *region;
4764 const char *region_name;
4765 struct sk_buff *msg;
4769 if (!info->attrs[DEVLINK_ATTR_REGION_NAME])
4772 if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
4773 index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
4775 port = devlink_port_get_by_index(devlink, index);
4780 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
4782 region = devlink_port_region_get_by_name(port, region_name);
4784 region = devlink_region_get_by_name(devlink, region_name);
4789 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4793 err = devlink_nl_region_fill(msg, devlink, DEVLINK_CMD_REGION_GET,
4794 info->snd_portid, info->snd_seq, 0,
4801 return genlmsg_reply(msg, info);
4804 static int devlink_nl_cmd_region_get_port_dumpit(struct sk_buff *msg,
4805 struct netlink_callback *cb,
4806 struct devlink_port *port,
4810 struct devlink_region *region;
4813 list_for_each_entry(region, &port->region_list, list) {
4818 err = devlink_nl_region_fill(msg, port->devlink,
4819 DEVLINK_CMD_REGION_GET,
4820 NETLINK_CB(cb->skb).portid,
4822 NLM_F_MULTI, region);
4832 static int devlink_nl_cmd_region_get_devlink_dumpit(struct sk_buff *msg,
4833 struct netlink_callback *cb,
4834 struct devlink *devlink,
4838 struct devlink_region *region;
4839 struct devlink_port *port;
4842 mutex_lock(&devlink->lock);
4843 list_for_each_entry(region, &devlink->region_list, list) {
4848 err = devlink_nl_region_fill(msg, devlink,
4849 DEVLINK_CMD_REGION_GET,
4850 NETLINK_CB(cb->skb).portid,
4852 NLM_F_MULTI, region);
4858 list_for_each_entry(port, &devlink->port_list, list) {
4859 err = devlink_nl_cmd_region_get_port_dumpit(msg, cb, port, idx,
4866 mutex_unlock(&devlink->lock);
4870 static int devlink_nl_cmd_region_get_dumpit(struct sk_buff *msg,
4871 struct netlink_callback *cb)
4873 struct devlink *devlink;
4874 int start = cb->args[0];
4878 mutex_lock(&devlink_mutex);
4879 list_for_each_entry(devlink, &devlink_list, list) {
4880 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
4882 err = devlink_nl_cmd_region_get_devlink_dumpit(msg, cb, devlink,
4888 mutex_unlock(&devlink_mutex);
4893 static int devlink_nl_cmd_region_del(struct sk_buff *skb,
4894 struct genl_info *info)
4896 struct devlink *devlink = info->user_ptr[0];
4897 struct devlink_snapshot *snapshot;
4898 struct devlink_port *port = NULL;
4899 struct devlink_region *region;
4900 const char *region_name;
4904 if (!info->attrs[DEVLINK_ATTR_REGION_NAME] ||
4905 !info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID])
4908 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
4909 snapshot_id = nla_get_u32(info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
4911 if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
4912 index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
4914 port = devlink_port_get_by_index(devlink, index);
4920 region = devlink_port_region_get_by_name(port, region_name);
4922 region = devlink_region_get_by_name(devlink, region_name);
4927 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
4931 devlink_region_snapshot_del(region, snapshot);
4936 devlink_nl_cmd_region_new(struct sk_buff *skb, struct genl_info *info)
4938 struct devlink *devlink = info->user_ptr[0];
4939 struct devlink_snapshot *snapshot;
4940 struct devlink_port *port = NULL;
4941 struct nlattr *snapshot_id_attr;
4942 struct devlink_region *region;
4943 const char *region_name;
4949 if (!info->attrs[DEVLINK_ATTR_REGION_NAME]) {
4950 NL_SET_ERR_MSG_MOD(info->extack, "No region name provided");
4954 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
4956 if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
4957 index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
4959 port = devlink_port_get_by_index(devlink, index);
4965 region = devlink_port_region_get_by_name(port, region_name);
4967 region = devlink_region_get_by_name(devlink, region_name);
4970 NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not exist");
4974 if (!region->ops->snapshot) {
4975 NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not support taking an immediate snapshot");
4979 if (region->cur_snapshots == region->max_snapshots) {
4980 NL_SET_ERR_MSG_MOD(info->extack, "The region has reached the maximum number of stored snapshots");
4984 snapshot_id_attr = info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID];
4985 if (snapshot_id_attr) {
4986 snapshot_id = nla_get_u32(snapshot_id_attr);
4988 if (devlink_region_snapshot_get_by_id(region, snapshot_id)) {
4989 NL_SET_ERR_MSG_MOD(info->extack, "The requested snapshot id is already in use");
4993 err = __devlink_snapshot_id_insert(devlink, snapshot_id);
4997 err = __devlink_region_snapshot_id_get(devlink, &snapshot_id);
4999 NL_SET_ERR_MSG_MOD(info->extack, "Failed to allocate a new snapshot id");
5005 err = region->port_ops->snapshot(port, region->port_ops,
5006 info->extack, &data);
5008 err = region->ops->snapshot(devlink, region->ops,
5009 info->extack, &data);
5011 goto err_snapshot_capture;
5013 err = __devlink_region_snapshot_create(region, data, snapshot_id);
5015 goto err_snapshot_create;
5017 if (!snapshot_id_attr) {
5018 struct sk_buff *msg;
5020 snapshot = devlink_region_snapshot_get_by_id(region,
5022 if (WARN_ON(!snapshot))
5025 msg = devlink_nl_region_notify_build(region, snapshot,
5026 DEVLINK_CMD_REGION_NEW,
5029 err = PTR_ERR_OR_ZERO(msg);
5033 err = genlmsg_reply(msg, info);
5040 err_snapshot_create:
5041 region->ops->destructor(data);
5042 err_snapshot_capture:
5043 __devlink_snapshot_id_decrement(devlink, snapshot_id);
5047 devlink_region_snapshot_del(region, snapshot);
5051 static int devlink_nl_cmd_region_read_chunk_fill(struct sk_buff *msg,
5052 struct devlink *devlink,
5053 u8 *chunk, u32 chunk_size,
5056 struct nlattr *chunk_attr;
5059 chunk_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_CHUNK);
5063 err = nla_put(msg, DEVLINK_ATTR_REGION_CHUNK_DATA, chunk_size, chunk);
5065 goto nla_put_failure;
5067 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_CHUNK_ADDR, addr,
5070 goto nla_put_failure;
5072 nla_nest_end(msg, chunk_attr);
5076 nla_nest_cancel(msg, chunk_attr);
5080 #define DEVLINK_REGION_READ_CHUNK_SIZE 256
5082 static int devlink_nl_region_read_snapshot_fill(struct sk_buff *skb,
5083 struct devlink *devlink,
5084 struct devlink_region *region,
5085 struct nlattr **attrs,
5090 struct devlink_snapshot *snapshot;
5091 u64 curr_offset = start_offset;
5095 *new_offset = start_offset;
5097 snapshot_id = nla_get_u32(attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
5098 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
5102 while (curr_offset < end_offset) {
5106 if (end_offset - curr_offset < DEVLINK_REGION_READ_CHUNK_SIZE)
5107 data_size = end_offset - curr_offset;
5109 data_size = DEVLINK_REGION_READ_CHUNK_SIZE;
5111 data = &snapshot->data[curr_offset];
5112 err = devlink_nl_cmd_region_read_chunk_fill(skb, devlink,
5118 curr_offset += data_size;
5120 *new_offset = curr_offset;
5125 static int devlink_nl_cmd_region_read_dumpit(struct sk_buff *skb,
5126 struct netlink_callback *cb)
5128 const struct genl_dumpit_info *info = genl_dumpit_info(cb);
5129 u64 ret_offset, start_offset, end_offset = U64_MAX;
5130 struct nlattr **attrs = info->attrs;
5131 struct devlink_port *port = NULL;
5132 struct devlink_region *region;
5133 struct nlattr *chunks_attr;
5134 const char *region_name;
5135 struct devlink *devlink;
5140 start_offset = *((u64 *)&cb->args[0]);
5142 mutex_lock(&devlink_mutex);
5143 devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
5144 if (IS_ERR(devlink)) {
5145 err = PTR_ERR(devlink);
5149 mutex_lock(&devlink->lock);
5151 if (!attrs[DEVLINK_ATTR_REGION_NAME] ||
5152 !attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]) {
5157 if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
5158 index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
5160 port = devlink_port_get_by_index(devlink, index);
5167 region_name = nla_data(attrs[DEVLINK_ATTR_REGION_NAME]);
5170 region = devlink_port_region_get_by_name(port, region_name);
5172 region = devlink_region_get_by_name(devlink, region_name);
5179 if (attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR] &&
5180 attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]) {
5183 nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
5185 end_offset = nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
5186 end_offset += nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]);
5189 if (end_offset > region->size)
5190 end_offset = region->size;
5192 /* return 0 if there is no further data to read */
5193 if (start_offset == end_offset) {
5198 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
5199 &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI,
5200 DEVLINK_CMD_REGION_READ);
5206 err = devlink_nl_put_handle(skb, devlink);
5208 goto nla_put_failure;
5211 err = nla_put_u32(skb, DEVLINK_ATTR_PORT_INDEX,
5212 region->port->index);
5214 goto nla_put_failure;
5217 err = nla_put_string(skb, DEVLINK_ATTR_REGION_NAME, region_name);
5219 goto nla_put_failure;
5221 chunks_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_REGION_CHUNKS);
5224 goto nla_put_failure;
5227 err = devlink_nl_region_read_snapshot_fill(skb, devlink,
5230 end_offset, &ret_offset);
5232 if (err && err != -EMSGSIZE)
5233 goto nla_put_failure;
5235 /* Check if there was any progress done to prevent infinite loop */
5236 if (ret_offset == start_offset) {
5238 goto nla_put_failure;
5241 *((u64 *)&cb->args[0]) = ret_offset;
5243 nla_nest_end(skb, chunks_attr);
5244 genlmsg_end(skb, hdr);
5245 mutex_unlock(&devlink->lock);
5246 mutex_unlock(&devlink_mutex);
5251 genlmsg_cancel(skb, hdr);
5253 mutex_unlock(&devlink->lock);
5255 mutex_unlock(&devlink_mutex);
5259 struct devlink_info_req {
5260 struct sk_buff *msg;
5263 int devlink_info_driver_name_put(struct devlink_info_req *req, const char *name)
5265 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_DRIVER_NAME, name);
5267 EXPORT_SYMBOL_GPL(devlink_info_driver_name_put);
5269 int devlink_info_serial_number_put(struct devlink_info_req *req, const char *sn)
5271 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_SERIAL_NUMBER, sn);
5273 EXPORT_SYMBOL_GPL(devlink_info_serial_number_put);
5275 int devlink_info_board_serial_number_put(struct devlink_info_req *req,
5278 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_BOARD_SERIAL_NUMBER,
5281 EXPORT_SYMBOL_GPL(devlink_info_board_serial_number_put);
5283 static int devlink_info_version_put(struct devlink_info_req *req, int attr,
5284 const char *version_name,
5285 const char *version_value)
5287 struct nlattr *nest;
5290 nest = nla_nest_start_noflag(req->msg, attr);
5294 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_NAME,
5297 goto nla_put_failure;
5299 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_VALUE,
5302 goto nla_put_failure;
5304 nla_nest_end(req->msg, nest);
5309 nla_nest_cancel(req->msg, nest);
5313 int devlink_info_version_fixed_put(struct devlink_info_req *req,
5314 const char *version_name,
5315 const char *version_value)
5317 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_FIXED,
5318 version_name, version_value);
5320 EXPORT_SYMBOL_GPL(devlink_info_version_fixed_put);
5322 int devlink_info_version_stored_put(struct devlink_info_req *req,
5323 const char *version_name,
5324 const char *version_value)
5326 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_STORED,
5327 version_name, version_value);
5329 EXPORT_SYMBOL_GPL(devlink_info_version_stored_put);
5331 int devlink_info_version_running_put(struct devlink_info_req *req,
5332 const char *version_name,
5333 const char *version_value)
5335 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_RUNNING,
5336 version_name, version_value);
5338 EXPORT_SYMBOL_GPL(devlink_info_version_running_put);
5341 devlink_nl_info_fill(struct sk_buff *msg, struct devlink *devlink,
5342 enum devlink_command cmd, u32 portid,
5343 u32 seq, int flags, struct netlink_ext_ack *extack)
5345 struct devlink_info_req req;
5349 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
5354 if (devlink_nl_put_handle(msg, devlink))
5355 goto err_cancel_msg;
5358 err = devlink->ops->info_get(devlink, &req, extack);
5360 goto err_cancel_msg;
5362 genlmsg_end(msg, hdr);
5366 genlmsg_cancel(msg, hdr);
5370 static int devlink_nl_cmd_info_get_doit(struct sk_buff *skb,
5371 struct genl_info *info)
5373 struct devlink *devlink = info->user_ptr[0];
5374 struct sk_buff *msg;
5377 if (!devlink->ops->info_get)
5380 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5384 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
5385 info->snd_portid, info->snd_seq, 0,
5392 return genlmsg_reply(msg, info);
5395 static int devlink_nl_cmd_info_get_dumpit(struct sk_buff *msg,
5396 struct netlink_callback *cb)
5398 struct devlink *devlink;
5399 int start = cb->args[0];
5403 mutex_lock(&devlink_mutex);
5404 list_for_each_entry(devlink, &devlink_list, list) {
5405 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
5412 if (!devlink->ops->info_get) {
5417 mutex_lock(&devlink->lock);
5418 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
5419 NETLINK_CB(cb->skb).portid,
5420 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5422 mutex_unlock(&devlink->lock);
5423 if (err == -EOPNOTSUPP)
5429 mutex_unlock(&devlink_mutex);
5431 if (err != -EMSGSIZE)
5438 struct devlink_fmsg_item {
5439 struct list_head list;
5446 struct devlink_fmsg {
5447 struct list_head item_list;
5448 bool putting_binary; /* This flag forces enclosing of binary data
5449 * in an array brackets. It forces using
5450 * of designated API:
5451 * devlink_fmsg_binary_pair_nest_start()
5452 * devlink_fmsg_binary_pair_nest_end()
5456 static struct devlink_fmsg *devlink_fmsg_alloc(void)
5458 struct devlink_fmsg *fmsg;
5460 fmsg = kzalloc(sizeof(*fmsg), GFP_KERNEL);
5464 INIT_LIST_HEAD(&fmsg->item_list);
5469 static void devlink_fmsg_free(struct devlink_fmsg *fmsg)
5471 struct devlink_fmsg_item *item, *tmp;
5473 list_for_each_entry_safe(item, tmp, &fmsg->item_list, list) {
5474 list_del(&item->list);
5480 static int devlink_fmsg_nest_common(struct devlink_fmsg *fmsg,
5483 struct devlink_fmsg_item *item;
5485 item = kzalloc(sizeof(*item), GFP_KERNEL);
5489 item->attrtype = attrtype;
5490 list_add_tail(&item->list, &fmsg->item_list);
5495 int devlink_fmsg_obj_nest_start(struct devlink_fmsg *fmsg)
5497 if (fmsg->putting_binary)
5500 return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_OBJ_NEST_START);
5502 EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_start);
5504 static int devlink_fmsg_nest_end(struct devlink_fmsg *fmsg)
5506 if (fmsg->putting_binary)
5509 return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_NEST_END);
5512 int devlink_fmsg_obj_nest_end(struct devlink_fmsg *fmsg)
5514 if (fmsg->putting_binary)
5517 return devlink_fmsg_nest_end(fmsg);
5519 EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_end);
5521 #define DEVLINK_FMSG_MAX_SIZE (GENLMSG_DEFAULT_SIZE - GENL_HDRLEN - NLA_HDRLEN)
5523 static int devlink_fmsg_put_name(struct devlink_fmsg *fmsg, const char *name)
5525 struct devlink_fmsg_item *item;
5527 if (fmsg->putting_binary)
5530 if (strlen(name) + 1 > DEVLINK_FMSG_MAX_SIZE)
5533 item = kzalloc(sizeof(*item) + strlen(name) + 1, GFP_KERNEL);
5537 item->nla_type = NLA_NUL_STRING;
5538 item->len = strlen(name) + 1;
5539 item->attrtype = DEVLINK_ATTR_FMSG_OBJ_NAME;
5540 memcpy(&item->value, name, item->len);
5541 list_add_tail(&item->list, &fmsg->item_list);
5546 int devlink_fmsg_pair_nest_start(struct devlink_fmsg *fmsg, const char *name)
5550 if (fmsg->putting_binary)
5553 err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_PAIR_NEST_START);
5557 err = devlink_fmsg_put_name(fmsg, name);
5563 EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_start);
5565 int devlink_fmsg_pair_nest_end(struct devlink_fmsg *fmsg)
5567 if (fmsg->putting_binary)
5570 return devlink_fmsg_nest_end(fmsg);
5572 EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_end);
5574 int devlink_fmsg_arr_pair_nest_start(struct devlink_fmsg *fmsg,
5579 if (fmsg->putting_binary)
5582 err = devlink_fmsg_pair_nest_start(fmsg, name);
5586 err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_ARR_NEST_START);
5592 EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_start);
5594 int devlink_fmsg_arr_pair_nest_end(struct devlink_fmsg *fmsg)
5598 if (fmsg->putting_binary)
5601 err = devlink_fmsg_nest_end(fmsg);
5605 err = devlink_fmsg_nest_end(fmsg);
5611 EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_end);
5613 int devlink_fmsg_binary_pair_nest_start(struct devlink_fmsg *fmsg,
5618 err = devlink_fmsg_arr_pair_nest_start(fmsg, name);
5622 fmsg->putting_binary = true;
5625 EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_start);
5627 int devlink_fmsg_binary_pair_nest_end(struct devlink_fmsg *fmsg)
5629 if (!fmsg->putting_binary)
5632 fmsg->putting_binary = false;
5633 return devlink_fmsg_arr_pair_nest_end(fmsg);
5635 EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_end);
5637 static int devlink_fmsg_put_value(struct devlink_fmsg *fmsg,
5638 const void *value, u16 value_len,
5641 struct devlink_fmsg_item *item;
5643 if (value_len > DEVLINK_FMSG_MAX_SIZE)
5646 item = kzalloc(sizeof(*item) + value_len, GFP_KERNEL);
5650 item->nla_type = value_nla_type;
5651 item->len = value_len;
5652 item->attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
5653 memcpy(&item->value, value, item->len);
5654 list_add_tail(&item->list, &fmsg->item_list);
5659 int devlink_fmsg_bool_put(struct devlink_fmsg *fmsg, bool value)
5661 if (fmsg->putting_binary)
5664 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_FLAG);
5666 EXPORT_SYMBOL_GPL(devlink_fmsg_bool_put);
5668 int devlink_fmsg_u8_put(struct devlink_fmsg *fmsg, u8 value)
5670 if (fmsg->putting_binary)
5673 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U8);
5675 EXPORT_SYMBOL_GPL(devlink_fmsg_u8_put);
5677 int devlink_fmsg_u32_put(struct devlink_fmsg *fmsg, u32 value)
5679 if (fmsg->putting_binary)
5682 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U32);
5684 EXPORT_SYMBOL_GPL(devlink_fmsg_u32_put);
5686 int devlink_fmsg_u64_put(struct devlink_fmsg *fmsg, u64 value)
5688 if (fmsg->putting_binary)
5691 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U64);
5693 EXPORT_SYMBOL_GPL(devlink_fmsg_u64_put);
5695 int devlink_fmsg_string_put(struct devlink_fmsg *fmsg, const char *value)
5697 if (fmsg->putting_binary)
5700 return devlink_fmsg_put_value(fmsg, value, strlen(value) + 1,
5703 EXPORT_SYMBOL_GPL(devlink_fmsg_string_put);
5705 int devlink_fmsg_binary_put(struct devlink_fmsg *fmsg, const void *value,
5708 if (!fmsg->putting_binary)
5711 return devlink_fmsg_put_value(fmsg, value, value_len, NLA_BINARY);
5713 EXPORT_SYMBOL_GPL(devlink_fmsg_binary_put);
5715 int devlink_fmsg_bool_pair_put(struct devlink_fmsg *fmsg, const char *name,
5720 err = devlink_fmsg_pair_nest_start(fmsg, name);
5724 err = devlink_fmsg_bool_put(fmsg, value);
5728 err = devlink_fmsg_pair_nest_end(fmsg);
5734 EXPORT_SYMBOL_GPL(devlink_fmsg_bool_pair_put);
5736 int devlink_fmsg_u8_pair_put(struct devlink_fmsg *fmsg, const char *name,
5741 err = devlink_fmsg_pair_nest_start(fmsg, name);
5745 err = devlink_fmsg_u8_put(fmsg, value);
5749 err = devlink_fmsg_pair_nest_end(fmsg);
5755 EXPORT_SYMBOL_GPL(devlink_fmsg_u8_pair_put);
5757 int devlink_fmsg_u32_pair_put(struct devlink_fmsg *fmsg, const char *name,
5762 err = devlink_fmsg_pair_nest_start(fmsg, name);
5766 err = devlink_fmsg_u32_put(fmsg, value);
5770 err = devlink_fmsg_pair_nest_end(fmsg);
5776 EXPORT_SYMBOL_GPL(devlink_fmsg_u32_pair_put);
5778 int devlink_fmsg_u64_pair_put(struct devlink_fmsg *fmsg, const char *name,
5783 err = devlink_fmsg_pair_nest_start(fmsg, name);
5787 err = devlink_fmsg_u64_put(fmsg, value);
5791 err = devlink_fmsg_pair_nest_end(fmsg);
5797 EXPORT_SYMBOL_GPL(devlink_fmsg_u64_pair_put);
5799 int devlink_fmsg_string_pair_put(struct devlink_fmsg *fmsg, const char *name,
5804 err = devlink_fmsg_pair_nest_start(fmsg, name);
5808 err = devlink_fmsg_string_put(fmsg, value);
5812 err = devlink_fmsg_pair_nest_end(fmsg);
5818 EXPORT_SYMBOL_GPL(devlink_fmsg_string_pair_put);
5820 int devlink_fmsg_binary_pair_put(struct devlink_fmsg *fmsg, const char *name,
5821 const void *value, u32 value_len)
5828 err = devlink_fmsg_binary_pair_nest_start(fmsg, name);
5832 for (offset = 0; offset < value_len; offset += data_size) {
5833 data_size = value_len - offset;
5834 if (data_size > DEVLINK_FMSG_MAX_SIZE)
5835 data_size = DEVLINK_FMSG_MAX_SIZE;
5836 err = devlink_fmsg_binary_put(fmsg, value + offset, data_size);
5839 /* Exit from loop with a break (instead of
5840 * return) to make sure putting_binary is turned off in
5841 * devlink_fmsg_binary_pair_nest_end
5845 end_err = devlink_fmsg_binary_pair_nest_end(fmsg);
5851 EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_put);
5854 devlink_fmsg_item_fill_type(struct devlink_fmsg_item *msg, struct sk_buff *skb)
5856 switch (msg->nla_type) {
5861 case NLA_NUL_STRING:
5863 return nla_put_u8(skb, DEVLINK_ATTR_FMSG_OBJ_VALUE_TYPE,
5871 devlink_fmsg_item_fill_data(struct devlink_fmsg_item *msg, struct sk_buff *skb)
5873 int attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
5876 switch (msg->nla_type) {
5878 /* Always provide flag data, regardless of its value */
5879 tmp = *(bool *) msg->value;
5881 return nla_put_u8(skb, attrtype, tmp);
5883 return nla_put_u8(skb, attrtype, *(u8 *) msg->value);
5885 return nla_put_u32(skb, attrtype, *(u32 *) msg->value);
5887 return nla_put_u64_64bit(skb, attrtype, *(u64 *) msg->value,
5889 case NLA_NUL_STRING:
5890 return nla_put_string(skb, attrtype, (char *) &msg->value);
5892 return nla_put(skb, attrtype, msg->len, (void *) &msg->value);
5899 devlink_fmsg_prepare_skb(struct devlink_fmsg *fmsg, struct sk_buff *skb,
5902 struct devlink_fmsg_item *item;
5903 struct nlattr *fmsg_nlattr;
5907 fmsg_nlattr = nla_nest_start_noflag(skb, DEVLINK_ATTR_FMSG);
5911 list_for_each_entry(item, &fmsg->item_list, list) {
5917 switch (item->attrtype) {
5918 case DEVLINK_ATTR_FMSG_OBJ_NEST_START:
5919 case DEVLINK_ATTR_FMSG_PAIR_NEST_START:
5920 case DEVLINK_ATTR_FMSG_ARR_NEST_START:
5921 case DEVLINK_ATTR_FMSG_NEST_END:
5922 err = nla_put_flag(skb, item->attrtype);
5924 case DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA:
5925 err = devlink_fmsg_item_fill_type(item, skb);
5928 err = devlink_fmsg_item_fill_data(item, skb);
5930 case DEVLINK_ATTR_FMSG_OBJ_NAME:
5931 err = nla_put_string(skb, item->attrtype,
5932 (char *) &item->value);
5944 nla_nest_end(skb, fmsg_nlattr);
5948 static int devlink_fmsg_snd(struct devlink_fmsg *fmsg,
5949 struct genl_info *info,
5950 enum devlink_command cmd, int flags)
5952 struct nlmsghdr *nlh;
5953 struct sk_buff *skb;
5960 int tmp_index = index;
5962 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
5966 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
5967 &devlink_nl_family, flags | NLM_F_MULTI, cmd);
5970 goto nla_put_failure;
5973 err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
5976 else if (err != -EMSGSIZE || tmp_index == index)
5977 goto nla_put_failure;
5979 genlmsg_end(skb, hdr);
5980 err = genlmsg_reply(skb, info);
5985 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
5988 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
5989 NLMSG_DONE, 0, flags | NLM_F_MULTI);
5992 goto nla_put_failure;
5995 return genlmsg_reply(skb, info);
6002 static int devlink_fmsg_dumpit(struct devlink_fmsg *fmsg, struct sk_buff *skb,
6003 struct netlink_callback *cb,
6004 enum devlink_command cmd)
6006 int index = cb->args[0];
6007 int tmp_index = index;
6011 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
6012 &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI, cmd);
6015 goto nla_put_failure;
6018 err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
6019 if ((err && err != -EMSGSIZE) || tmp_index == index)
6020 goto nla_put_failure;
6022 cb->args[0] = index;
6023 genlmsg_end(skb, hdr);
6027 genlmsg_cancel(skb, hdr);
6031 struct devlink_health_reporter {
6032 struct list_head list;
6034 const struct devlink_health_reporter_ops *ops;
6035 struct devlink *devlink;
6036 struct devlink_port *devlink_port;
6037 struct devlink_fmsg *dump_fmsg;
6038 struct mutex dump_lock; /* lock parallel read/write from dump buffers */
6039 u64 graceful_period;
6047 u64 last_recovery_ts;
6048 refcount_t refcount;
6052 devlink_health_reporter_priv(struct devlink_health_reporter *reporter)
6054 return reporter->priv;
6056 EXPORT_SYMBOL_GPL(devlink_health_reporter_priv);
6058 static struct devlink_health_reporter *
6059 __devlink_health_reporter_find_by_name(struct list_head *reporter_list,
6060 struct mutex *list_lock,
6061 const char *reporter_name)
6063 struct devlink_health_reporter *reporter;
6065 lockdep_assert_held(list_lock);
6066 list_for_each_entry(reporter, reporter_list, list)
6067 if (!strcmp(reporter->ops->name, reporter_name))
6072 static struct devlink_health_reporter *
6073 devlink_health_reporter_find_by_name(struct devlink *devlink,
6074 const char *reporter_name)
6076 return __devlink_health_reporter_find_by_name(&devlink->reporter_list,
6077 &devlink->reporters_lock,
6081 static struct devlink_health_reporter *
6082 devlink_port_health_reporter_find_by_name(struct devlink_port *devlink_port,
6083 const char *reporter_name)
6085 return __devlink_health_reporter_find_by_name(&devlink_port->reporter_list,
6086 &devlink_port->reporters_lock,
6090 static struct devlink_health_reporter *
6091 __devlink_health_reporter_create(struct devlink *devlink,
6092 const struct devlink_health_reporter_ops *ops,
6093 u64 graceful_period, void *priv)
6095 struct devlink_health_reporter *reporter;
6097 if (WARN_ON(graceful_period && !ops->recover))
6098 return ERR_PTR(-EINVAL);
6100 reporter = kzalloc(sizeof(*reporter), GFP_KERNEL);
6102 return ERR_PTR(-ENOMEM);
6104 reporter->priv = priv;
6105 reporter->ops = ops;
6106 reporter->devlink = devlink;
6107 reporter->graceful_period = graceful_period;
6108 reporter->auto_recover = !!ops->recover;
6109 reporter->auto_dump = !!ops->dump;
6110 mutex_init(&reporter->dump_lock);
6111 refcount_set(&reporter->refcount, 1);
6116 * devlink_port_health_reporter_create - create devlink health reporter for
6117 * specified port instance
6119 * @port: devlink_port which should contain the new reporter
6121 * @graceful_period: to avoid recovery loops, in msecs
6124 struct devlink_health_reporter *
6125 devlink_port_health_reporter_create(struct devlink_port *port,
6126 const struct devlink_health_reporter_ops *ops,
6127 u64 graceful_period, void *priv)
6129 struct devlink_health_reporter *reporter;
6131 mutex_lock(&port->reporters_lock);
6132 if (__devlink_health_reporter_find_by_name(&port->reporter_list,
6133 &port->reporters_lock, ops->name)) {
6134 reporter = ERR_PTR(-EEXIST);
6138 reporter = __devlink_health_reporter_create(port->devlink, ops,
6139 graceful_period, priv);
6140 if (IS_ERR(reporter))
6143 reporter->devlink_port = port;
6144 list_add_tail(&reporter->list, &port->reporter_list);
6146 mutex_unlock(&port->reporters_lock);
6149 EXPORT_SYMBOL_GPL(devlink_port_health_reporter_create);
6152 * devlink_health_reporter_create - create devlink health reporter
6156 * @graceful_period: to avoid recovery loops, in msecs
6159 struct devlink_health_reporter *
6160 devlink_health_reporter_create(struct devlink *devlink,
6161 const struct devlink_health_reporter_ops *ops,
6162 u64 graceful_period, void *priv)
6164 struct devlink_health_reporter *reporter;
6166 mutex_lock(&devlink->reporters_lock);
6167 if (devlink_health_reporter_find_by_name(devlink, ops->name)) {
6168 reporter = ERR_PTR(-EEXIST);
6172 reporter = __devlink_health_reporter_create(devlink, ops,
6173 graceful_period, priv);
6174 if (IS_ERR(reporter))
6177 list_add_tail(&reporter->list, &devlink->reporter_list);
6179 mutex_unlock(&devlink->reporters_lock);
6182 EXPORT_SYMBOL_GPL(devlink_health_reporter_create);
6185 devlink_health_reporter_free(struct devlink_health_reporter *reporter)
6187 mutex_destroy(&reporter->dump_lock);
6188 if (reporter->dump_fmsg)
6189 devlink_fmsg_free(reporter->dump_fmsg);
6194 devlink_health_reporter_put(struct devlink_health_reporter *reporter)
6196 if (refcount_dec_and_test(&reporter->refcount))
6197 devlink_health_reporter_free(reporter);
6201 __devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
6203 list_del(&reporter->list);
6204 devlink_health_reporter_put(reporter);
6208 * devlink_health_reporter_destroy - destroy devlink health reporter
6210 * @reporter: devlink health reporter to destroy
6213 devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
6215 struct mutex *lock = &reporter->devlink->reporters_lock;
6218 __devlink_health_reporter_destroy(reporter);
6221 EXPORT_SYMBOL_GPL(devlink_health_reporter_destroy);
6224 * devlink_port_health_reporter_destroy - destroy devlink port health reporter
6226 * @reporter: devlink health reporter to destroy
6229 devlink_port_health_reporter_destroy(struct devlink_health_reporter *reporter)
6231 struct mutex *lock = &reporter->devlink_port->reporters_lock;
6234 __devlink_health_reporter_destroy(reporter);
6237 EXPORT_SYMBOL_GPL(devlink_port_health_reporter_destroy);
6240 devlink_nl_health_reporter_fill(struct sk_buff *msg,
6241 struct devlink *devlink,
6242 struct devlink_health_reporter *reporter,
6243 enum devlink_command cmd, u32 portid,
6246 struct nlattr *reporter_attr;
6249 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
6253 if (devlink_nl_put_handle(msg, devlink))
6254 goto genlmsg_cancel;
6256 if (reporter->devlink_port) {
6257 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, reporter->devlink_port->index))
6258 goto genlmsg_cancel;
6260 reporter_attr = nla_nest_start_noflag(msg,
6261 DEVLINK_ATTR_HEALTH_REPORTER);
6263 goto genlmsg_cancel;
6264 if (nla_put_string(msg, DEVLINK_ATTR_HEALTH_REPORTER_NAME,
6265 reporter->ops->name))
6266 goto reporter_nest_cancel;
6267 if (nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_STATE,
6268 reporter->health_state))
6269 goto reporter_nest_cancel;
6270 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_ERR_COUNT,
6271 reporter->error_count, DEVLINK_ATTR_PAD))
6272 goto reporter_nest_cancel;
6273 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_RECOVER_COUNT,
6274 reporter->recovery_count, DEVLINK_ATTR_PAD))
6275 goto reporter_nest_cancel;
6276 if (reporter->ops->recover &&
6277 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD,
6278 reporter->graceful_period,
6280 goto reporter_nest_cancel;
6281 if (reporter->ops->recover &&
6282 nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER,
6283 reporter->auto_recover))
6284 goto reporter_nest_cancel;
6285 if (reporter->dump_fmsg &&
6286 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS,
6287 jiffies_to_msecs(reporter->dump_ts),
6289 goto reporter_nest_cancel;
6290 if (reporter->dump_fmsg &&
6291 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS_NS,
6292 reporter->dump_real_ts, DEVLINK_ATTR_PAD))
6293 goto reporter_nest_cancel;
6294 if (reporter->ops->dump &&
6295 nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP,
6296 reporter->auto_dump))
6297 goto reporter_nest_cancel;
6299 nla_nest_end(msg, reporter_attr);
6300 genlmsg_end(msg, hdr);
6303 reporter_nest_cancel:
6304 nla_nest_end(msg, reporter_attr);
6306 genlmsg_cancel(msg, hdr);
6310 static void devlink_recover_notify(struct devlink_health_reporter *reporter,
6311 enum devlink_command cmd)
6313 struct sk_buff *msg;
6316 WARN_ON(cmd != DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
6318 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6322 err = devlink_nl_health_reporter_fill(msg, reporter->devlink,
6323 reporter, cmd, 0, 0, 0);
6329 genlmsg_multicast_netns(&devlink_nl_family,
6330 devlink_net(reporter->devlink),
6331 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
6335 devlink_health_reporter_recovery_done(struct devlink_health_reporter *reporter)
6337 reporter->recovery_count++;
6338 reporter->last_recovery_ts = jiffies;
6340 EXPORT_SYMBOL_GPL(devlink_health_reporter_recovery_done);
6343 devlink_health_reporter_recover(struct devlink_health_reporter *reporter,
6344 void *priv_ctx, struct netlink_ext_ack *extack)
6348 if (reporter->health_state == DEVLINK_HEALTH_REPORTER_STATE_HEALTHY)
6351 if (!reporter->ops->recover)
6354 err = reporter->ops->recover(reporter, priv_ctx, extack);
6358 devlink_health_reporter_recovery_done(reporter);
6359 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_HEALTHY;
6360 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
6366 devlink_health_dump_clear(struct devlink_health_reporter *reporter)
6368 if (!reporter->dump_fmsg)
6370 devlink_fmsg_free(reporter->dump_fmsg);
6371 reporter->dump_fmsg = NULL;
6374 static int devlink_health_do_dump(struct devlink_health_reporter *reporter,
6376 struct netlink_ext_ack *extack)
6380 if (!reporter->ops->dump)
6383 if (reporter->dump_fmsg)
6386 reporter->dump_fmsg = devlink_fmsg_alloc();
6387 if (!reporter->dump_fmsg) {
6392 err = devlink_fmsg_obj_nest_start(reporter->dump_fmsg);
6396 err = reporter->ops->dump(reporter, reporter->dump_fmsg,
6401 err = devlink_fmsg_obj_nest_end(reporter->dump_fmsg);
6405 reporter->dump_ts = jiffies;
6406 reporter->dump_real_ts = ktime_get_real_ns();
6411 devlink_health_dump_clear(reporter);
6415 int devlink_health_report(struct devlink_health_reporter *reporter,
6416 const char *msg, void *priv_ctx)
6418 enum devlink_health_reporter_state prev_health_state;
6419 struct devlink *devlink = reporter->devlink;
6420 unsigned long recover_ts_threshold;
6422 /* write a log message of the current error */
6424 trace_devlink_health_report(devlink, reporter->ops->name, msg);
6425 reporter->error_count++;
6426 prev_health_state = reporter->health_state;
6427 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
6428 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
6430 /* abort if the previous error wasn't recovered */
6431 recover_ts_threshold = reporter->last_recovery_ts +
6432 msecs_to_jiffies(reporter->graceful_period);
6433 if (reporter->auto_recover &&
6434 (prev_health_state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY ||
6435 (reporter->last_recovery_ts && reporter->recovery_count &&
6436 time_is_after_jiffies(recover_ts_threshold)))) {
6437 trace_devlink_health_recover_aborted(devlink,
6438 reporter->ops->name,
6439 reporter->health_state,
6441 reporter->last_recovery_ts);
6445 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
6447 if (reporter->auto_dump) {
6448 mutex_lock(&reporter->dump_lock);
6449 /* store current dump of current error, for later analysis */
6450 devlink_health_do_dump(reporter, priv_ctx, NULL);
6451 mutex_unlock(&reporter->dump_lock);
6454 if (reporter->auto_recover)
6455 return devlink_health_reporter_recover(reporter,
6460 EXPORT_SYMBOL_GPL(devlink_health_report);
6462 static struct devlink_health_reporter *
6463 devlink_health_reporter_get_from_attrs(struct devlink *devlink,
6464 struct nlattr **attrs)
6466 struct devlink_health_reporter *reporter;
6467 struct devlink_port *devlink_port;
6468 char *reporter_name;
6470 if (!attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME])
6473 reporter_name = nla_data(attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME]);
6474 devlink_port = devlink_port_get_from_attrs(devlink, attrs);
6475 if (IS_ERR(devlink_port)) {
6476 mutex_lock(&devlink->reporters_lock);
6477 reporter = devlink_health_reporter_find_by_name(devlink, reporter_name);
6479 refcount_inc(&reporter->refcount);
6480 mutex_unlock(&devlink->reporters_lock);
6482 mutex_lock(&devlink_port->reporters_lock);
6483 reporter = devlink_port_health_reporter_find_by_name(devlink_port, reporter_name);
6485 refcount_inc(&reporter->refcount);
6486 mutex_unlock(&devlink_port->reporters_lock);
6492 static struct devlink_health_reporter *
6493 devlink_health_reporter_get_from_info(struct devlink *devlink,
6494 struct genl_info *info)
6496 return devlink_health_reporter_get_from_attrs(devlink, info->attrs);
6499 static struct devlink_health_reporter *
6500 devlink_health_reporter_get_from_cb(struct netlink_callback *cb)
6502 const struct genl_dumpit_info *info = genl_dumpit_info(cb);
6503 struct devlink_health_reporter *reporter;
6504 struct nlattr **attrs = info->attrs;
6505 struct devlink *devlink;
6507 mutex_lock(&devlink_mutex);
6508 devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
6509 if (IS_ERR(devlink))
6512 reporter = devlink_health_reporter_get_from_attrs(devlink, attrs);
6513 mutex_unlock(&devlink_mutex);
6516 mutex_unlock(&devlink_mutex);
6521 devlink_health_reporter_state_update(struct devlink_health_reporter *reporter,
6522 enum devlink_health_reporter_state state)
6524 if (WARN_ON(state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY &&
6525 state != DEVLINK_HEALTH_REPORTER_STATE_ERROR))
6528 if (reporter->health_state == state)
6531 reporter->health_state = state;
6532 trace_devlink_health_reporter_state_update(reporter->devlink,
6533 reporter->ops->name, state);
6534 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
6536 EXPORT_SYMBOL_GPL(devlink_health_reporter_state_update);
6538 static int devlink_nl_cmd_health_reporter_get_doit(struct sk_buff *skb,
6539 struct genl_info *info)
6541 struct devlink *devlink = info->user_ptr[0];
6542 struct devlink_health_reporter *reporter;
6543 struct sk_buff *msg;
6546 reporter = devlink_health_reporter_get_from_info(devlink, info);
6550 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6556 err = devlink_nl_health_reporter_fill(msg, devlink, reporter,
6557 DEVLINK_CMD_HEALTH_REPORTER_GET,
6558 info->snd_portid, info->snd_seq,
6565 err = genlmsg_reply(msg, info);
6567 devlink_health_reporter_put(reporter);
6572 devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg,
6573 struct netlink_callback *cb)
6575 struct devlink_health_reporter *reporter;
6576 struct devlink_port *port;
6577 struct devlink *devlink;
6578 int start = cb->args[0];
6582 mutex_lock(&devlink_mutex);
6583 list_for_each_entry(devlink, &devlink_list, list) {
6584 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
6586 mutex_lock(&devlink->reporters_lock);
6587 list_for_each_entry(reporter, &devlink->reporter_list,
6593 err = devlink_nl_health_reporter_fill(msg, devlink,
6595 DEVLINK_CMD_HEALTH_REPORTER_GET,
6596 NETLINK_CB(cb->skb).portid,
6600 mutex_unlock(&devlink->reporters_lock);
6605 mutex_unlock(&devlink->reporters_lock);
6608 list_for_each_entry(devlink, &devlink_list, list) {
6609 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
6611 mutex_lock(&devlink->lock);
6612 list_for_each_entry(port, &devlink->port_list, list) {
6613 mutex_lock(&port->reporters_lock);
6614 list_for_each_entry(reporter, &port->reporter_list, list) {
6619 err = devlink_nl_health_reporter_fill(msg, devlink, reporter,
6620 DEVLINK_CMD_HEALTH_REPORTER_GET,
6621 NETLINK_CB(cb->skb).portid,
6625 mutex_unlock(&port->reporters_lock);
6626 mutex_unlock(&devlink->lock);
6631 mutex_unlock(&port->reporters_lock);
6633 mutex_unlock(&devlink->lock);
6636 mutex_unlock(&devlink_mutex);
6643 devlink_nl_cmd_health_reporter_set_doit(struct sk_buff *skb,
6644 struct genl_info *info)
6646 struct devlink *devlink = info->user_ptr[0];
6647 struct devlink_health_reporter *reporter;
6650 reporter = devlink_health_reporter_get_from_info(devlink, info);
6654 if (!reporter->ops->recover &&
6655 (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] ||
6656 info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])) {
6660 if (!reporter->ops->dump &&
6661 info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]) {
6666 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD])
6667 reporter->graceful_period =
6668 nla_get_u64(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD]);
6670 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])
6671 reporter->auto_recover =
6672 nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER]);
6674 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP])
6675 reporter->auto_dump =
6676 nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]);
6678 devlink_health_reporter_put(reporter);
6681 devlink_health_reporter_put(reporter);
6685 static int devlink_nl_cmd_health_reporter_recover_doit(struct sk_buff *skb,
6686 struct genl_info *info)
6688 struct devlink *devlink = info->user_ptr[0];
6689 struct devlink_health_reporter *reporter;
6692 reporter = devlink_health_reporter_get_from_info(devlink, info);
6696 err = devlink_health_reporter_recover(reporter, NULL, info->extack);
6698 devlink_health_reporter_put(reporter);
6702 static int devlink_nl_cmd_health_reporter_diagnose_doit(struct sk_buff *skb,
6703 struct genl_info *info)
6705 struct devlink *devlink = info->user_ptr[0];
6706 struct devlink_health_reporter *reporter;
6707 struct devlink_fmsg *fmsg;
6710 reporter = devlink_health_reporter_get_from_info(devlink, info);
6714 if (!reporter->ops->diagnose) {
6715 devlink_health_reporter_put(reporter);
6719 fmsg = devlink_fmsg_alloc();
6721 devlink_health_reporter_put(reporter);
6725 err = devlink_fmsg_obj_nest_start(fmsg);
6729 err = reporter->ops->diagnose(reporter, fmsg, info->extack);
6733 err = devlink_fmsg_obj_nest_end(fmsg);
6737 err = devlink_fmsg_snd(fmsg, info,
6738 DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE, 0);
6741 devlink_fmsg_free(fmsg);
6742 devlink_health_reporter_put(reporter);
6747 devlink_nl_cmd_health_reporter_dump_get_dumpit(struct sk_buff *skb,
6748 struct netlink_callback *cb)
6750 struct devlink_health_reporter *reporter;
6751 u64 start = cb->args[0];
6754 reporter = devlink_health_reporter_get_from_cb(cb);
6758 if (!reporter->ops->dump) {
6762 mutex_lock(&reporter->dump_lock);
6764 err = devlink_health_do_dump(reporter, NULL, cb->extack);
6767 cb->args[1] = reporter->dump_ts;
6769 if (!reporter->dump_fmsg || cb->args[1] != reporter->dump_ts) {
6770 NL_SET_ERR_MSG_MOD(cb->extack, "Dump trampled, please retry");
6775 err = devlink_fmsg_dumpit(reporter->dump_fmsg, skb, cb,
6776 DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET);
6778 mutex_unlock(&reporter->dump_lock);
6780 devlink_health_reporter_put(reporter);
6785 devlink_nl_cmd_health_reporter_dump_clear_doit(struct sk_buff *skb,
6786 struct genl_info *info)
6788 struct devlink *devlink = info->user_ptr[0];
6789 struct devlink_health_reporter *reporter;
6791 reporter = devlink_health_reporter_get_from_info(devlink, info);
6795 if (!reporter->ops->dump) {
6796 devlink_health_reporter_put(reporter);
6800 mutex_lock(&reporter->dump_lock);
6801 devlink_health_dump_clear(reporter);
6802 mutex_unlock(&reporter->dump_lock);
6803 devlink_health_reporter_put(reporter);
6807 static int devlink_nl_cmd_health_reporter_test_doit(struct sk_buff *skb,
6808 struct genl_info *info)
6810 struct devlink *devlink = info->user_ptr[0];
6811 struct devlink_health_reporter *reporter;
6814 reporter = devlink_health_reporter_get_from_info(devlink, info);
6818 if (!reporter->ops->test) {
6819 devlink_health_reporter_put(reporter);
6823 err = reporter->ops->test(reporter, info->extack);
6825 devlink_health_reporter_put(reporter);
6829 struct devlink_stats {
6832 struct u64_stats_sync syncp;
6836 * struct devlink_trap_policer_item - Packet trap policer attributes.
6837 * @policer: Immutable packet trap policer attributes.
6838 * @rate: Rate in packets / sec.
6839 * @burst: Burst size in packets.
6840 * @list: trap_policer_list member.
6842 * Describes packet trap policer attributes. Created by devlink during trap
6843 * policer registration.
6845 struct devlink_trap_policer_item {
6846 const struct devlink_trap_policer *policer;
6849 struct list_head list;
6853 * struct devlink_trap_group_item - Packet trap group attributes.
6854 * @group: Immutable packet trap group attributes.
6855 * @policer_item: Associated policer item. Can be NULL.
6856 * @list: trap_group_list member.
6857 * @stats: Trap group statistics.
6859 * Describes packet trap group attributes. Created by devlink during trap
6860 * group registration.
6862 struct devlink_trap_group_item {
6863 const struct devlink_trap_group *group;
6864 struct devlink_trap_policer_item *policer_item;
6865 struct list_head list;
6866 struct devlink_stats __percpu *stats;
6870 * struct devlink_trap_item - Packet trap attributes.
6871 * @trap: Immutable packet trap attributes.
6872 * @group_item: Associated group item.
6873 * @list: trap_list member.
6874 * @action: Trap action.
6875 * @stats: Trap statistics.
6876 * @priv: Driver private information.
6878 * Describes both mutable and immutable packet trap attributes. Created by
6879 * devlink during trap registration and used for all trap related operations.
6881 struct devlink_trap_item {
6882 const struct devlink_trap *trap;
6883 struct devlink_trap_group_item *group_item;
6884 struct list_head list;
6885 enum devlink_trap_action action;
6886 struct devlink_stats __percpu *stats;
6890 static struct devlink_trap_policer_item *
6891 devlink_trap_policer_item_lookup(struct devlink *devlink, u32 id)
6893 struct devlink_trap_policer_item *policer_item;
6895 list_for_each_entry(policer_item, &devlink->trap_policer_list, list) {
6896 if (policer_item->policer->id == id)
6897 return policer_item;
6903 static struct devlink_trap_item *
6904 devlink_trap_item_lookup(struct devlink *devlink, const char *name)
6906 struct devlink_trap_item *trap_item;
6908 list_for_each_entry(trap_item, &devlink->trap_list, list) {
6909 if (!strcmp(trap_item->trap->name, name))
6916 static struct devlink_trap_item *
6917 devlink_trap_item_get_from_info(struct devlink *devlink,
6918 struct genl_info *info)
6920 struct nlattr *attr;
6922 if (!info->attrs[DEVLINK_ATTR_TRAP_NAME])
6924 attr = info->attrs[DEVLINK_ATTR_TRAP_NAME];
6926 return devlink_trap_item_lookup(devlink, nla_data(attr));
6930 devlink_trap_action_get_from_info(struct genl_info *info,
6931 enum devlink_trap_action *p_trap_action)
6935 val = nla_get_u8(info->attrs[DEVLINK_ATTR_TRAP_ACTION]);
6937 case DEVLINK_TRAP_ACTION_DROP:
6938 case DEVLINK_TRAP_ACTION_TRAP:
6939 case DEVLINK_TRAP_ACTION_MIRROR:
6940 *p_trap_action = val;
6949 static int devlink_trap_metadata_put(struct sk_buff *msg,
6950 const struct devlink_trap *trap)
6952 struct nlattr *attr;
6954 attr = nla_nest_start(msg, DEVLINK_ATTR_TRAP_METADATA);
6958 if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_IN_PORT) &&
6959 nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_IN_PORT))
6960 goto nla_put_failure;
6961 if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_FA_COOKIE) &&
6962 nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_FA_COOKIE))
6963 goto nla_put_failure;
6965 nla_nest_end(msg, attr);
6970 nla_nest_cancel(msg, attr);
6974 static void devlink_trap_stats_read(struct devlink_stats __percpu *trap_stats,
6975 struct devlink_stats *stats)
6979 memset(stats, 0, sizeof(*stats));
6980 for_each_possible_cpu(i) {
6981 struct devlink_stats *cpu_stats;
6982 u64 rx_packets, rx_bytes;
6985 cpu_stats = per_cpu_ptr(trap_stats, i);
6987 start = u64_stats_fetch_begin_irq(&cpu_stats->syncp);
6988 rx_packets = cpu_stats->rx_packets;
6989 rx_bytes = cpu_stats->rx_bytes;
6990 } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start));
6992 stats->rx_packets += rx_packets;
6993 stats->rx_bytes += rx_bytes;
6997 static int devlink_trap_stats_put(struct sk_buff *msg,
6998 struct devlink_stats __percpu *trap_stats)
7000 struct devlink_stats stats;
7001 struct nlattr *attr;
7003 devlink_trap_stats_read(trap_stats, &stats);
7005 attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
7009 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_PACKETS,
7010 stats.rx_packets, DEVLINK_ATTR_PAD))
7011 goto nla_put_failure;
7013 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_BYTES,
7014 stats.rx_bytes, DEVLINK_ATTR_PAD))
7015 goto nla_put_failure;
7017 nla_nest_end(msg, attr);
7022 nla_nest_cancel(msg, attr);
7026 static int devlink_nl_trap_fill(struct sk_buff *msg, struct devlink *devlink,
7027 const struct devlink_trap_item *trap_item,
7028 enum devlink_command cmd, u32 portid, u32 seq,
7031 struct devlink_trap_group_item *group_item = trap_item->group_item;
7035 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
7039 if (devlink_nl_put_handle(msg, devlink))
7040 goto nla_put_failure;
7042 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
7043 group_item->group->name))
7044 goto nla_put_failure;
7046 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_NAME, trap_item->trap->name))
7047 goto nla_put_failure;
7049 if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_TYPE, trap_item->trap->type))
7050 goto nla_put_failure;
7052 if (trap_item->trap->generic &&
7053 nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
7054 goto nla_put_failure;
7056 if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_ACTION, trap_item->action))
7057 goto nla_put_failure;
7059 err = devlink_trap_metadata_put(msg, trap_item->trap);
7061 goto nla_put_failure;
7063 err = devlink_trap_stats_put(msg, trap_item->stats);
7065 goto nla_put_failure;
7067 genlmsg_end(msg, hdr);
7072 genlmsg_cancel(msg, hdr);
7076 static int devlink_nl_cmd_trap_get_doit(struct sk_buff *skb,
7077 struct genl_info *info)
7079 struct netlink_ext_ack *extack = info->extack;
7080 struct devlink *devlink = info->user_ptr[0];
7081 struct devlink_trap_item *trap_item;
7082 struct sk_buff *msg;
7085 if (list_empty(&devlink->trap_list))
7088 trap_item = devlink_trap_item_get_from_info(devlink, info);
7090 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
7094 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7098 err = devlink_nl_trap_fill(msg, devlink, trap_item,
7099 DEVLINK_CMD_TRAP_NEW, info->snd_portid,
7104 return genlmsg_reply(msg, info);
7111 static int devlink_nl_cmd_trap_get_dumpit(struct sk_buff *msg,
7112 struct netlink_callback *cb)
7114 struct devlink_trap_item *trap_item;
7115 struct devlink *devlink;
7116 int start = cb->args[0];
7120 mutex_lock(&devlink_mutex);
7121 list_for_each_entry(devlink, &devlink_list, list) {
7122 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
7124 mutex_lock(&devlink->lock);
7125 list_for_each_entry(trap_item, &devlink->trap_list, list) {
7130 err = devlink_nl_trap_fill(msg, devlink, trap_item,
7131 DEVLINK_CMD_TRAP_NEW,
7132 NETLINK_CB(cb->skb).portid,
7136 mutex_unlock(&devlink->lock);
7141 mutex_unlock(&devlink->lock);
7144 mutex_unlock(&devlink_mutex);
7150 static int __devlink_trap_action_set(struct devlink *devlink,
7151 struct devlink_trap_item *trap_item,
7152 enum devlink_trap_action trap_action,
7153 struct netlink_ext_ack *extack)
7157 if (trap_item->action != trap_action &&
7158 trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP) {
7159 NL_SET_ERR_MSG_MOD(extack, "Cannot change action of non-drop traps. Skipping");
7163 err = devlink->ops->trap_action_set(devlink, trap_item->trap,
7164 trap_action, extack);
7168 trap_item->action = trap_action;
7173 static int devlink_trap_action_set(struct devlink *devlink,
7174 struct devlink_trap_item *trap_item,
7175 struct genl_info *info)
7177 enum devlink_trap_action trap_action;
7180 if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
7183 err = devlink_trap_action_get_from_info(info, &trap_action);
7185 NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
7189 return __devlink_trap_action_set(devlink, trap_item, trap_action,
7193 static int devlink_nl_cmd_trap_set_doit(struct sk_buff *skb,
7194 struct genl_info *info)
7196 struct netlink_ext_ack *extack = info->extack;
7197 struct devlink *devlink = info->user_ptr[0];
7198 struct devlink_trap_item *trap_item;
7200 if (list_empty(&devlink->trap_list))
7203 trap_item = devlink_trap_item_get_from_info(devlink, info);
7205 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
7209 return devlink_trap_action_set(devlink, trap_item, info);
7212 static struct devlink_trap_group_item *
7213 devlink_trap_group_item_lookup(struct devlink *devlink, const char *name)
7215 struct devlink_trap_group_item *group_item;
7217 list_for_each_entry(group_item, &devlink->trap_group_list, list) {
7218 if (!strcmp(group_item->group->name, name))
7225 static struct devlink_trap_group_item *
7226 devlink_trap_group_item_lookup_by_id(struct devlink *devlink, u16 id)
7228 struct devlink_trap_group_item *group_item;
7230 list_for_each_entry(group_item, &devlink->trap_group_list, list) {
7231 if (group_item->group->id == id)
7238 static struct devlink_trap_group_item *
7239 devlink_trap_group_item_get_from_info(struct devlink *devlink,
7240 struct genl_info *info)
7244 if (!info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME])
7246 name = nla_data(info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME]);
7248 return devlink_trap_group_item_lookup(devlink, name);
7252 devlink_nl_trap_group_fill(struct sk_buff *msg, struct devlink *devlink,
7253 const struct devlink_trap_group_item *group_item,
7254 enum devlink_command cmd, u32 portid, u32 seq,
7260 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
7264 if (devlink_nl_put_handle(msg, devlink))
7265 goto nla_put_failure;
7267 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
7268 group_item->group->name))
7269 goto nla_put_failure;
7271 if (group_item->group->generic &&
7272 nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
7273 goto nla_put_failure;
7275 if (group_item->policer_item &&
7276 nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID,
7277 group_item->policer_item->policer->id))
7278 goto nla_put_failure;
7280 err = devlink_trap_stats_put(msg, group_item->stats);
7282 goto nla_put_failure;
7284 genlmsg_end(msg, hdr);
7289 genlmsg_cancel(msg, hdr);
7293 static int devlink_nl_cmd_trap_group_get_doit(struct sk_buff *skb,
7294 struct genl_info *info)
7296 struct netlink_ext_ack *extack = info->extack;
7297 struct devlink *devlink = info->user_ptr[0];
7298 struct devlink_trap_group_item *group_item;
7299 struct sk_buff *msg;
7302 if (list_empty(&devlink->trap_group_list))
7305 group_item = devlink_trap_group_item_get_from_info(devlink, info);
7307 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
7311 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7315 err = devlink_nl_trap_group_fill(msg, devlink, group_item,
7316 DEVLINK_CMD_TRAP_GROUP_NEW,
7317 info->snd_portid, info->snd_seq, 0);
7319 goto err_trap_group_fill;
7321 return genlmsg_reply(msg, info);
7323 err_trap_group_fill:
7328 static int devlink_nl_cmd_trap_group_get_dumpit(struct sk_buff *msg,
7329 struct netlink_callback *cb)
7331 enum devlink_command cmd = DEVLINK_CMD_TRAP_GROUP_NEW;
7332 struct devlink_trap_group_item *group_item;
7333 u32 portid = NETLINK_CB(cb->skb).portid;
7334 struct devlink *devlink;
7335 int start = cb->args[0];
7339 mutex_lock(&devlink_mutex);
7340 list_for_each_entry(devlink, &devlink_list, list) {
7341 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
7343 mutex_lock(&devlink->lock);
7344 list_for_each_entry(group_item, &devlink->trap_group_list,
7350 err = devlink_nl_trap_group_fill(msg, devlink,
7356 mutex_unlock(&devlink->lock);
7361 mutex_unlock(&devlink->lock);
7364 mutex_unlock(&devlink_mutex);
7371 __devlink_trap_group_action_set(struct devlink *devlink,
7372 struct devlink_trap_group_item *group_item,
7373 enum devlink_trap_action trap_action,
7374 struct netlink_ext_ack *extack)
7376 const char *group_name = group_item->group->name;
7377 struct devlink_trap_item *trap_item;
7380 if (devlink->ops->trap_group_action_set) {
7381 err = devlink->ops->trap_group_action_set(devlink, group_item->group,
7382 trap_action, extack);
7386 list_for_each_entry(trap_item, &devlink->trap_list, list) {
7387 if (strcmp(trap_item->group_item->group->name, group_name))
7389 if (trap_item->action != trap_action &&
7390 trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP)
7392 trap_item->action = trap_action;
7398 list_for_each_entry(trap_item, &devlink->trap_list, list) {
7399 if (strcmp(trap_item->group_item->group->name, group_name))
7401 err = __devlink_trap_action_set(devlink, trap_item,
7402 trap_action, extack);
7411 devlink_trap_group_action_set(struct devlink *devlink,
7412 struct devlink_trap_group_item *group_item,
7413 struct genl_info *info, bool *p_modified)
7415 enum devlink_trap_action trap_action;
7418 if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
7421 err = devlink_trap_action_get_from_info(info, &trap_action);
7423 NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
7427 err = __devlink_trap_group_action_set(devlink, group_item, trap_action,
7437 static int devlink_trap_group_set(struct devlink *devlink,
7438 struct devlink_trap_group_item *group_item,
7439 struct genl_info *info)
7441 struct devlink_trap_policer_item *policer_item;
7442 struct netlink_ext_ack *extack = info->extack;
7443 const struct devlink_trap_policer *policer;
7444 struct nlattr **attrs = info->attrs;
7447 if (!attrs[DEVLINK_ATTR_TRAP_POLICER_ID])
7450 if (!devlink->ops->trap_group_set)
7453 policer_item = group_item->policer_item;
7454 if (attrs[DEVLINK_ATTR_TRAP_POLICER_ID]) {
7457 policer_id = nla_get_u32(attrs[DEVLINK_ATTR_TRAP_POLICER_ID]);
7458 policer_item = devlink_trap_policer_item_lookup(devlink,
7460 if (policer_id && !policer_item) {
7461 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
7465 policer = policer_item ? policer_item->policer : NULL;
7467 err = devlink->ops->trap_group_set(devlink, group_item->group, policer,
7472 group_item->policer_item = policer_item;
7477 static int devlink_nl_cmd_trap_group_set_doit(struct sk_buff *skb,
7478 struct genl_info *info)
7480 struct netlink_ext_ack *extack = info->extack;
7481 struct devlink *devlink = info->user_ptr[0];
7482 struct devlink_trap_group_item *group_item;
7483 bool modified = false;
7486 if (list_empty(&devlink->trap_group_list))
7489 group_item = devlink_trap_group_item_get_from_info(devlink, info);
7491 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
7495 err = devlink_trap_group_action_set(devlink, group_item, info,
7500 err = devlink_trap_group_set(devlink, group_item, info);
7502 goto err_trap_group_set;
7508 NL_SET_ERR_MSG_MOD(extack, "Trap group set failed, but some changes were committed already");
7512 static struct devlink_trap_policer_item *
7513 devlink_trap_policer_item_get_from_info(struct devlink *devlink,
7514 struct genl_info *info)
7518 if (!info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID])
7520 id = nla_get_u32(info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID]);
7522 return devlink_trap_policer_item_lookup(devlink, id);
7526 devlink_trap_policer_stats_put(struct sk_buff *msg, struct devlink *devlink,
7527 const struct devlink_trap_policer *policer)
7529 struct nlattr *attr;
7533 if (!devlink->ops->trap_policer_counter_get)
7536 err = devlink->ops->trap_policer_counter_get(devlink, policer, &drops);
7540 attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
7544 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_DROPPED, drops,
7546 goto nla_put_failure;
7548 nla_nest_end(msg, attr);
7553 nla_nest_cancel(msg, attr);
7558 devlink_nl_trap_policer_fill(struct sk_buff *msg, struct devlink *devlink,
7559 const struct devlink_trap_policer_item *policer_item,
7560 enum devlink_command cmd, u32 portid, u32 seq,
7566 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
7570 if (devlink_nl_put_handle(msg, devlink))
7571 goto nla_put_failure;
7573 if (nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID,
7574 policer_item->policer->id))
7575 goto nla_put_failure;
7577 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_RATE,
7578 policer_item->rate, DEVLINK_ATTR_PAD))
7579 goto nla_put_failure;
7581 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_BURST,
7582 policer_item->burst, DEVLINK_ATTR_PAD))
7583 goto nla_put_failure;
7585 err = devlink_trap_policer_stats_put(msg, devlink,
7586 policer_item->policer);
7588 goto nla_put_failure;
7590 genlmsg_end(msg, hdr);
7595 genlmsg_cancel(msg, hdr);
7599 static int devlink_nl_cmd_trap_policer_get_doit(struct sk_buff *skb,
7600 struct genl_info *info)
7602 struct devlink_trap_policer_item *policer_item;
7603 struct netlink_ext_ack *extack = info->extack;
7604 struct devlink *devlink = info->user_ptr[0];
7605 struct sk_buff *msg;
7608 if (list_empty(&devlink->trap_policer_list))
7611 policer_item = devlink_trap_policer_item_get_from_info(devlink, info);
7612 if (!policer_item) {
7613 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
7617 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7621 err = devlink_nl_trap_policer_fill(msg, devlink, policer_item,
7622 DEVLINK_CMD_TRAP_POLICER_NEW,
7623 info->snd_portid, info->snd_seq, 0);
7625 goto err_trap_policer_fill;
7627 return genlmsg_reply(msg, info);
7629 err_trap_policer_fill:
7634 static int devlink_nl_cmd_trap_policer_get_dumpit(struct sk_buff *msg,
7635 struct netlink_callback *cb)
7637 enum devlink_command cmd = DEVLINK_CMD_TRAP_POLICER_NEW;
7638 struct devlink_trap_policer_item *policer_item;
7639 u32 portid = NETLINK_CB(cb->skb).portid;
7640 struct devlink *devlink;
7641 int start = cb->args[0];
7645 mutex_lock(&devlink_mutex);
7646 list_for_each_entry(devlink, &devlink_list, list) {
7647 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
7649 mutex_lock(&devlink->lock);
7650 list_for_each_entry(policer_item, &devlink->trap_policer_list,
7656 err = devlink_nl_trap_policer_fill(msg, devlink,
7662 mutex_unlock(&devlink->lock);
7667 mutex_unlock(&devlink->lock);
7670 mutex_unlock(&devlink_mutex);
7677 devlink_trap_policer_set(struct devlink *devlink,
7678 struct devlink_trap_policer_item *policer_item,
7679 struct genl_info *info)
7681 struct netlink_ext_ack *extack = info->extack;
7682 struct nlattr **attrs = info->attrs;
7686 rate = policer_item->rate;
7687 burst = policer_item->burst;
7689 if (attrs[DEVLINK_ATTR_TRAP_POLICER_RATE])
7690 rate = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_RATE]);
7692 if (attrs[DEVLINK_ATTR_TRAP_POLICER_BURST])
7693 burst = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_BURST]);
7695 if (rate < policer_item->policer->min_rate) {
7696 NL_SET_ERR_MSG_MOD(extack, "Policer rate lower than limit");
7700 if (rate > policer_item->policer->max_rate) {
7701 NL_SET_ERR_MSG_MOD(extack, "Policer rate higher than limit");
7705 if (burst < policer_item->policer->min_burst) {
7706 NL_SET_ERR_MSG_MOD(extack, "Policer burst size lower than limit");
7710 if (burst > policer_item->policer->max_burst) {
7711 NL_SET_ERR_MSG_MOD(extack, "Policer burst size higher than limit");
7715 err = devlink->ops->trap_policer_set(devlink, policer_item->policer,
7716 rate, burst, info->extack);
7720 policer_item->rate = rate;
7721 policer_item->burst = burst;
7726 static int devlink_nl_cmd_trap_policer_set_doit(struct sk_buff *skb,
7727 struct genl_info *info)
7729 struct devlink_trap_policer_item *policer_item;
7730 struct netlink_ext_ack *extack = info->extack;
7731 struct devlink *devlink = info->user_ptr[0];
7733 if (list_empty(&devlink->trap_policer_list))
7736 if (!devlink->ops->trap_policer_set)
7739 policer_item = devlink_trap_policer_item_get_from_info(devlink, info);
7740 if (!policer_item) {
7741 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
7745 return devlink_trap_policer_set(devlink, policer_item, info);
7748 static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = {
7749 [DEVLINK_ATTR_UNSPEC] = { .strict_start_type =
7750 DEVLINK_ATTR_TRAP_POLICER_ID },
7751 [DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING },
7752 [DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING },
7753 [DEVLINK_ATTR_PORT_INDEX] = { .type = NLA_U32 },
7754 [DEVLINK_ATTR_PORT_TYPE] = NLA_POLICY_RANGE(NLA_U16, DEVLINK_PORT_TYPE_AUTO,
7755 DEVLINK_PORT_TYPE_IB),
7756 [DEVLINK_ATTR_PORT_SPLIT_COUNT] = { .type = NLA_U32 },
7757 [DEVLINK_ATTR_SB_INDEX] = { .type = NLA_U32 },
7758 [DEVLINK_ATTR_SB_POOL_INDEX] = { .type = NLA_U16 },
7759 [DEVLINK_ATTR_SB_POOL_TYPE] = { .type = NLA_U8 },
7760 [DEVLINK_ATTR_SB_POOL_SIZE] = { .type = NLA_U32 },
7761 [DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE] = { .type = NLA_U8 },
7762 [DEVLINK_ATTR_SB_THRESHOLD] = { .type = NLA_U32 },
7763 [DEVLINK_ATTR_SB_TC_INDEX] = { .type = NLA_U16 },
7764 [DEVLINK_ATTR_ESWITCH_MODE] = NLA_POLICY_RANGE(NLA_U16, DEVLINK_ESWITCH_MODE_LEGACY,
7765 DEVLINK_ESWITCH_MODE_SWITCHDEV),
7766 [DEVLINK_ATTR_ESWITCH_INLINE_MODE] = { .type = NLA_U8 },
7767 [DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = { .type = NLA_U8 },
7768 [DEVLINK_ATTR_DPIPE_TABLE_NAME] = { .type = NLA_NUL_STRING },
7769 [DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED] = { .type = NLA_U8 },
7770 [DEVLINK_ATTR_RESOURCE_ID] = { .type = NLA_U64},
7771 [DEVLINK_ATTR_RESOURCE_SIZE] = { .type = NLA_U64},
7772 [DEVLINK_ATTR_PARAM_NAME] = { .type = NLA_NUL_STRING },
7773 [DEVLINK_ATTR_PARAM_TYPE] = { .type = NLA_U8 },
7774 [DEVLINK_ATTR_PARAM_VALUE_CMODE] = { .type = NLA_U8 },
7775 [DEVLINK_ATTR_REGION_NAME] = { .type = NLA_NUL_STRING },
7776 [DEVLINK_ATTR_REGION_SNAPSHOT_ID] = { .type = NLA_U32 },
7777 [DEVLINK_ATTR_REGION_CHUNK_ADDR] = { .type = NLA_U64 },
7778 [DEVLINK_ATTR_REGION_CHUNK_LEN] = { .type = NLA_U64 },
7779 [DEVLINK_ATTR_HEALTH_REPORTER_NAME] = { .type = NLA_NUL_STRING },
7780 [DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] = { .type = NLA_U64 },
7781 [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER] = { .type = NLA_U8 },
7782 [DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME] = { .type = NLA_NUL_STRING },
7783 [DEVLINK_ATTR_FLASH_UPDATE_COMPONENT] = { .type = NLA_NUL_STRING },
7784 [DEVLINK_ATTR_FLASH_UPDATE_OVERWRITE_MASK] =
7785 NLA_POLICY_BITFIELD32(DEVLINK_SUPPORTED_FLASH_OVERWRITE_SECTIONS),
7786 [DEVLINK_ATTR_TRAP_NAME] = { .type = NLA_NUL_STRING },
7787 [DEVLINK_ATTR_TRAP_ACTION] = { .type = NLA_U8 },
7788 [DEVLINK_ATTR_TRAP_GROUP_NAME] = { .type = NLA_NUL_STRING },
7789 [DEVLINK_ATTR_NETNS_PID] = { .type = NLA_U32 },
7790 [DEVLINK_ATTR_NETNS_FD] = { .type = NLA_U32 },
7791 [DEVLINK_ATTR_NETNS_ID] = { .type = NLA_U32 },
7792 [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP] = { .type = NLA_U8 },
7793 [DEVLINK_ATTR_TRAP_POLICER_ID] = { .type = NLA_U32 },
7794 [DEVLINK_ATTR_TRAP_POLICER_RATE] = { .type = NLA_U64 },
7795 [DEVLINK_ATTR_TRAP_POLICER_BURST] = { .type = NLA_U64 },
7796 [DEVLINK_ATTR_PORT_FUNCTION] = { .type = NLA_NESTED },
7797 [DEVLINK_ATTR_RELOAD_ACTION] = NLA_POLICY_RANGE(NLA_U8, DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
7798 DEVLINK_RELOAD_ACTION_MAX),
7799 [DEVLINK_ATTR_RELOAD_LIMITS] = NLA_POLICY_BITFIELD32(DEVLINK_RELOAD_LIMITS_VALID_MASK),
7800 [DEVLINK_ATTR_PORT_FLAVOUR] = { .type = NLA_U16 },
7801 [DEVLINK_ATTR_PORT_PCI_PF_NUMBER] = { .type = NLA_U16 },
7802 [DEVLINK_ATTR_PORT_PCI_SF_NUMBER] = { .type = NLA_U32 },
7803 [DEVLINK_ATTR_PORT_CONTROLLER_NUMBER] = { .type = NLA_U32 },
7806 static const struct genl_small_ops devlink_nl_ops[] = {
7808 .cmd = DEVLINK_CMD_GET,
7809 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7810 .doit = devlink_nl_cmd_get_doit,
7811 .dumpit = devlink_nl_cmd_get_dumpit,
7812 /* can be retrieved by unprivileged users */
7815 .cmd = DEVLINK_CMD_PORT_GET,
7816 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7817 .doit = devlink_nl_cmd_port_get_doit,
7818 .dumpit = devlink_nl_cmd_port_get_dumpit,
7819 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
7820 /* can be retrieved by unprivileged users */
7823 .cmd = DEVLINK_CMD_PORT_SET,
7824 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7825 .doit = devlink_nl_cmd_port_set_doit,
7826 .flags = GENL_ADMIN_PERM,
7827 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
7830 .cmd = DEVLINK_CMD_PORT_SPLIT,
7831 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7832 .doit = devlink_nl_cmd_port_split_doit,
7833 .flags = GENL_ADMIN_PERM,
7834 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
7837 .cmd = DEVLINK_CMD_PORT_UNSPLIT,
7838 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7839 .doit = devlink_nl_cmd_port_unsplit_doit,
7840 .flags = GENL_ADMIN_PERM,
7841 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
7844 .cmd = DEVLINK_CMD_PORT_NEW,
7845 .doit = devlink_nl_cmd_port_new_doit,
7846 .flags = GENL_ADMIN_PERM,
7847 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
7850 .cmd = DEVLINK_CMD_PORT_DEL,
7851 .doit = devlink_nl_cmd_port_del_doit,
7852 .flags = GENL_ADMIN_PERM,
7853 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
7856 .cmd = DEVLINK_CMD_SB_GET,
7857 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7858 .doit = devlink_nl_cmd_sb_get_doit,
7859 .dumpit = devlink_nl_cmd_sb_get_dumpit,
7860 /* can be retrieved by unprivileged users */
7863 .cmd = DEVLINK_CMD_SB_POOL_GET,
7864 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7865 .doit = devlink_nl_cmd_sb_pool_get_doit,
7866 .dumpit = devlink_nl_cmd_sb_pool_get_dumpit,
7867 /* can be retrieved by unprivileged users */
7870 .cmd = DEVLINK_CMD_SB_POOL_SET,
7871 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7872 .doit = devlink_nl_cmd_sb_pool_set_doit,
7873 .flags = GENL_ADMIN_PERM,
7876 .cmd = DEVLINK_CMD_SB_PORT_POOL_GET,
7877 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7878 .doit = devlink_nl_cmd_sb_port_pool_get_doit,
7879 .dumpit = devlink_nl_cmd_sb_port_pool_get_dumpit,
7880 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
7881 /* can be retrieved by unprivileged users */
7884 .cmd = DEVLINK_CMD_SB_PORT_POOL_SET,
7885 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7886 .doit = devlink_nl_cmd_sb_port_pool_set_doit,
7887 .flags = GENL_ADMIN_PERM,
7888 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
7891 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_GET,
7892 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7893 .doit = devlink_nl_cmd_sb_tc_pool_bind_get_doit,
7894 .dumpit = devlink_nl_cmd_sb_tc_pool_bind_get_dumpit,
7895 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
7896 /* can be retrieved by unprivileged users */
7899 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_SET,
7900 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7901 .doit = devlink_nl_cmd_sb_tc_pool_bind_set_doit,
7902 .flags = GENL_ADMIN_PERM,
7903 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
7906 .cmd = DEVLINK_CMD_SB_OCC_SNAPSHOT,
7907 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7908 .doit = devlink_nl_cmd_sb_occ_snapshot_doit,
7909 .flags = GENL_ADMIN_PERM,
7912 .cmd = DEVLINK_CMD_SB_OCC_MAX_CLEAR,
7913 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7914 .doit = devlink_nl_cmd_sb_occ_max_clear_doit,
7915 .flags = GENL_ADMIN_PERM,
7918 .cmd = DEVLINK_CMD_ESWITCH_GET,
7919 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7920 .doit = devlink_nl_cmd_eswitch_get_doit,
7921 .flags = GENL_ADMIN_PERM,
7922 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
7925 .cmd = DEVLINK_CMD_ESWITCH_SET,
7926 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7927 .doit = devlink_nl_cmd_eswitch_set_doit,
7928 .flags = GENL_ADMIN_PERM,
7929 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
7932 .cmd = DEVLINK_CMD_DPIPE_TABLE_GET,
7933 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7934 .doit = devlink_nl_cmd_dpipe_table_get,
7935 /* can be retrieved by unprivileged users */
7938 .cmd = DEVLINK_CMD_DPIPE_ENTRIES_GET,
7939 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7940 .doit = devlink_nl_cmd_dpipe_entries_get,
7941 /* can be retrieved by unprivileged users */
7944 .cmd = DEVLINK_CMD_DPIPE_HEADERS_GET,
7945 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7946 .doit = devlink_nl_cmd_dpipe_headers_get,
7947 /* can be retrieved by unprivileged users */
7950 .cmd = DEVLINK_CMD_DPIPE_TABLE_COUNTERS_SET,
7951 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7952 .doit = devlink_nl_cmd_dpipe_table_counters_set,
7953 .flags = GENL_ADMIN_PERM,
7956 .cmd = DEVLINK_CMD_RESOURCE_SET,
7957 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7958 .doit = devlink_nl_cmd_resource_set,
7959 .flags = GENL_ADMIN_PERM,
7962 .cmd = DEVLINK_CMD_RESOURCE_DUMP,
7963 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7964 .doit = devlink_nl_cmd_resource_dump,
7965 /* can be retrieved by unprivileged users */
7968 .cmd = DEVLINK_CMD_RELOAD,
7969 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7970 .doit = devlink_nl_cmd_reload,
7971 .flags = GENL_ADMIN_PERM,
7972 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
7975 .cmd = DEVLINK_CMD_PARAM_GET,
7976 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7977 .doit = devlink_nl_cmd_param_get_doit,
7978 .dumpit = devlink_nl_cmd_param_get_dumpit,
7979 /* can be retrieved by unprivileged users */
7982 .cmd = DEVLINK_CMD_PARAM_SET,
7983 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7984 .doit = devlink_nl_cmd_param_set_doit,
7985 .flags = GENL_ADMIN_PERM,
7988 .cmd = DEVLINK_CMD_PORT_PARAM_GET,
7989 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7990 .doit = devlink_nl_cmd_port_param_get_doit,
7991 .dumpit = devlink_nl_cmd_port_param_get_dumpit,
7992 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
7993 /* can be retrieved by unprivileged users */
7996 .cmd = DEVLINK_CMD_PORT_PARAM_SET,
7997 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7998 .doit = devlink_nl_cmd_port_param_set_doit,
7999 .flags = GENL_ADMIN_PERM,
8000 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
8003 .cmd = DEVLINK_CMD_REGION_GET,
8004 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8005 .doit = devlink_nl_cmd_region_get_doit,
8006 .dumpit = devlink_nl_cmd_region_get_dumpit,
8007 .flags = GENL_ADMIN_PERM,
8010 .cmd = DEVLINK_CMD_REGION_NEW,
8011 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8012 .doit = devlink_nl_cmd_region_new,
8013 .flags = GENL_ADMIN_PERM,
8016 .cmd = DEVLINK_CMD_REGION_DEL,
8017 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8018 .doit = devlink_nl_cmd_region_del,
8019 .flags = GENL_ADMIN_PERM,
8022 .cmd = DEVLINK_CMD_REGION_READ,
8023 .validate = GENL_DONT_VALIDATE_STRICT |
8024 GENL_DONT_VALIDATE_DUMP_STRICT,
8025 .dumpit = devlink_nl_cmd_region_read_dumpit,
8026 .flags = GENL_ADMIN_PERM,
8029 .cmd = DEVLINK_CMD_INFO_GET,
8030 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8031 .doit = devlink_nl_cmd_info_get_doit,
8032 .dumpit = devlink_nl_cmd_info_get_dumpit,
8033 /* can be retrieved by unprivileged users */
8036 .cmd = DEVLINK_CMD_HEALTH_REPORTER_GET,
8037 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8038 .doit = devlink_nl_cmd_health_reporter_get_doit,
8039 .dumpit = devlink_nl_cmd_health_reporter_get_dumpit,
8040 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
8041 DEVLINK_NL_FLAG_NO_LOCK,
8042 /* can be retrieved by unprivileged users */
8045 .cmd = DEVLINK_CMD_HEALTH_REPORTER_SET,
8046 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8047 .doit = devlink_nl_cmd_health_reporter_set_doit,
8048 .flags = GENL_ADMIN_PERM,
8049 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
8050 DEVLINK_NL_FLAG_NO_LOCK,
8053 .cmd = DEVLINK_CMD_HEALTH_REPORTER_RECOVER,
8054 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8055 .doit = devlink_nl_cmd_health_reporter_recover_doit,
8056 .flags = GENL_ADMIN_PERM,
8057 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
8058 DEVLINK_NL_FLAG_NO_LOCK,
8061 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE,
8062 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8063 .doit = devlink_nl_cmd_health_reporter_diagnose_doit,
8064 .flags = GENL_ADMIN_PERM,
8065 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
8066 DEVLINK_NL_FLAG_NO_LOCK,
8069 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET,
8070 .validate = GENL_DONT_VALIDATE_STRICT |
8071 GENL_DONT_VALIDATE_DUMP_STRICT,
8072 .dumpit = devlink_nl_cmd_health_reporter_dump_get_dumpit,
8073 .flags = GENL_ADMIN_PERM,
8074 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
8075 DEVLINK_NL_FLAG_NO_LOCK,
8078 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_CLEAR,
8079 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8080 .doit = devlink_nl_cmd_health_reporter_dump_clear_doit,
8081 .flags = GENL_ADMIN_PERM,
8082 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
8083 DEVLINK_NL_FLAG_NO_LOCK,
8086 .cmd = DEVLINK_CMD_HEALTH_REPORTER_TEST,
8087 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8088 .doit = devlink_nl_cmd_health_reporter_test_doit,
8089 .flags = GENL_ADMIN_PERM,
8090 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
8091 DEVLINK_NL_FLAG_NO_LOCK,
8094 .cmd = DEVLINK_CMD_FLASH_UPDATE,
8095 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8096 .doit = devlink_nl_cmd_flash_update,
8097 .flags = GENL_ADMIN_PERM,
8100 .cmd = DEVLINK_CMD_TRAP_GET,
8101 .doit = devlink_nl_cmd_trap_get_doit,
8102 .dumpit = devlink_nl_cmd_trap_get_dumpit,
8103 /* can be retrieved by unprivileged users */
8106 .cmd = DEVLINK_CMD_TRAP_SET,
8107 .doit = devlink_nl_cmd_trap_set_doit,
8108 .flags = GENL_ADMIN_PERM,
8111 .cmd = DEVLINK_CMD_TRAP_GROUP_GET,
8112 .doit = devlink_nl_cmd_trap_group_get_doit,
8113 .dumpit = devlink_nl_cmd_trap_group_get_dumpit,
8114 /* can be retrieved by unprivileged users */
8117 .cmd = DEVLINK_CMD_TRAP_GROUP_SET,
8118 .doit = devlink_nl_cmd_trap_group_set_doit,
8119 .flags = GENL_ADMIN_PERM,
8122 .cmd = DEVLINK_CMD_TRAP_POLICER_GET,
8123 .doit = devlink_nl_cmd_trap_policer_get_doit,
8124 .dumpit = devlink_nl_cmd_trap_policer_get_dumpit,
8125 /* can be retrieved by unprivileged users */
8128 .cmd = DEVLINK_CMD_TRAP_POLICER_SET,
8129 .doit = devlink_nl_cmd_trap_policer_set_doit,
8130 .flags = GENL_ADMIN_PERM,
8134 static struct genl_family devlink_nl_family __ro_after_init = {
8135 .name = DEVLINK_GENL_NAME,
8136 .version = DEVLINK_GENL_VERSION,
8137 .maxattr = DEVLINK_ATTR_MAX,
8138 .policy = devlink_nl_policy,
8140 .pre_doit = devlink_nl_pre_doit,
8141 .post_doit = devlink_nl_post_doit,
8142 .module = THIS_MODULE,
8143 .small_ops = devlink_nl_ops,
8144 .n_small_ops = ARRAY_SIZE(devlink_nl_ops),
8145 .mcgrps = devlink_nl_mcgrps,
8146 .n_mcgrps = ARRAY_SIZE(devlink_nl_mcgrps),
8149 static bool devlink_reload_actions_valid(const struct devlink_ops *ops)
8151 const struct devlink_reload_combination *comb;
8154 if (!devlink_reload_supported(ops)) {
8155 if (WARN_ON(ops->reload_actions))
8160 if (WARN_ON(!ops->reload_actions ||
8161 ops->reload_actions & BIT(DEVLINK_RELOAD_ACTION_UNSPEC) ||
8162 ops->reload_actions >= BIT(__DEVLINK_RELOAD_ACTION_MAX)))
8165 if (WARN_ON(ops->reload_limits & BIT(DEVLINK_RELOAD_LIMIT_UNSPEC) ||
8166 ops->reload_limits >= BIT(__DEVLINK_RELOAD_LIMIT_MAX)))
8169 for (i = 0; i < ARRAY_SIZE(devlink_reload_invalid_combinations); i++) {
8170 comb = &devlink_reload_invalid_combinations[i];
8171 if (ops->reload_actions == BIT(comb->action) &&
8172 ops->reload_limits == BIT(comb->limit))
8179 * devlink_alloc - Allocate new devlink instance resources
8182 * @priv_size: size of user private data
8184 * Allocate new devlink instance resources, including devlink index
8187 struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size)
8189 struct devlink *devlink;
8194 if (!devlink_reload_actions_valid(ops))
8197 devlink = kzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL);
8201 xa_init_flags(&devlink->snapshot_ids, XA_FLAGS_ALLOC);
8202 __devlink_net_set(devlink, &init_net);
8203 INIT_LIST_HEAD(&devlink->port_list);
8204 INIT_LIST_HEAD(&devlink->sb_list);
8205 INIT_LIST_HEAD_RCU(&devlink->dpipe_table_list);
8206 INIT_LIST_HEAD(&devlink->resource_list);
8207 INIT_LIST_HEAD(&devlink->param_list);
8208 INIT_LIST_HEAD(&devlink->region_list);
8209 INIT_LIST_HEAD(&devlink->reporter_list);
8210 INIT_LIST_HEAD(&devlink->trap_list);
8211 INIT_LIST_HEAD(&devlink->trap_group_list);
8212 INIT_LIST_HEAD(&devlink->trap_policer_list);
8213 mutex_init(&devlink->lock);
8214 mutex_init(&devlink->reporters_lock);
8217 EXPORT_SYMBOL_GPL(devlink_alloc);
8220 * devlink_register - Register devlink instance
8223 * @dev: parent device
8225 int devlink_register(struct devlink *devlink, struct device *dev)
8228 devlink->registered = true;
8229 mutex_lock(&devlink_mutex);
8230 list_add_tail(&devlink->list, &devlink_list);
8231 devlink_notify(devlink, DEVLINK_CMD_NEW);
8232 mutex_unlock(&devlink_mutex);
8235 EXPORT_SYMBOL_GPL(devlink_register);
8238 * devlink_unregister - Unregister devlink instance
8242 void devlink_unregister(struct devlink *devlink)
8244 mutex_lock(&devlink_mutex);
8245 WARN_ON(devlink_reload_supported(devlink->ops) &&
8246 devlink->reload_enabled);
8247 devlink_notify(devlink, DEVLINK_CMD_DEL);
8248 list_del(&devlink->list);
8249 mutex_unlock(&devlink_mutex);
8251 EXPORT_SYMBOL_GPL(devlink_unregister);
8254 * devlink_reload_enable - Enable reload of devlink instance
8258 * Should be called at end of device initialization
8259 * process when reload operation is supported.
8261 void devlink_reload_enable(struct devlink *devlink)
8263 mutex_lock(&devlink_mutex);
8264 devlink->reload_enabled = true;
8265 mutex_unlock(&devlink_mutex);
8267 EXPORT_SYMBOL_GPL(devlink_reload_enable);
8270 * devlink_reload_disable - Disable reload of devlink instance
8274 * Should be called at the beginning of device cleanup
8275 * process when reload operation is supported.
8277 void devlink_reload_disable(struct devlink *devlink)
8279 mutex_lock(&devlink_mutex);
8280 /* Mutex is taken which ensures that no reload operation is in
8281 * progress while setting up forbidded flag.
8283 devlink->reload_enabled = false;
8284 mutex_unlock(&devlink_mutex);
8286 EXPORT_SYMBOL_GPL(devlink_reload_disable);
8289 * devlink_free - Free devlink instance resources
8293 void devlink_free(struct devlink *devlink)
8295 mutex_destroy(&devlink->reporters_lock);
8296 mutex_destroy(&devlink->lock);
8297 WARN_ON(!list_empty(&devlink->trap_policer_list));
8298 WARN_ON(!list_empty(&devlink->trap_group_list));
8299 WARN_ON(!list_empty(&devlink->trap_list));
8300 WARN_ON(!list_empty(&devlink->reporter_list));
8301 WARN_ON(!list_empty(&devlink->region_list));
8302 WARN_ON(!list_empty(&devlink->param_list));
8303 WARN_ON(!list_empty(&devlink->resource_list));
8304 WARN_ON(!list_empty(&devlink->dpipe_table_list));
8305 WARN_ON(!list_empty(&devlink->sb_list));
8306 WARN_ON(!list_empty(&devlink->port_list));
8308 xa_destroy(&devlink->snapshot_ids);
8312 EXPORT_SYMBOL_GPL(devlink_free);
8314 static void devlink_port_type_warn(struct work_struct *work)
8316 WARN(true, "Type was not set for devlink port.");
8319 static bool devlink_port_type_should_warn(struct devlink_port *devlink_port)
8321 /* Ignore CPU and DSA flavours. */
8322 return devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_CPU &&
8323 devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_DSA &&
8324 devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_UNUSED;
8327 #define DEVLINK_PORT_TYPE_WARN_TIMEOUT (HZ * 3600)
8329 static void devlink_port_type_warn_schedule(struct devlink_port *devlink_port)
8331 if (!devlink_port_type_should_warn(devlink_port))
8333 /* Schedule a work to WARN in case driver does not set port
8334 * type within timeout.
8336 schedule_delayed_work(&devlink_port->type_warn_dw,
8337 DEVLINK_PORT_TYPE_WARN_TIMEOUT);
8340 static void devlink_port_type_warn_cancel(struct devlink_port *devlink_port)
8342 if (!devlink_port_type_should_warn(devlink_port))
8344 cancel_delayed_work_sync(&devlink_port->type_warn_dw);
8348 * devlink_port_register - Register devlink port
8351 * @devlink_port: devlink port
8352 * @port_index: driver-specific numerical identifier of the port
8354 * Register devlink port with provided port index. User can use
8355 * any indexing, even hw-related one. devlink_port structure
8356 * is convenient to be embedded inside user driver private structure.
8357 * Note that the caller should take care of zeroing the devlink_port
8360 int devlink_port_register(struct devlink *devlink,
8361 struct devlink_port *devlink_port,
8362 unsigned int port_index)
8364 mutex_lock(&devlink->lock);
8365 if (devlink_port_index_exists(devlink, port_index)) {
8366 mutex_unlock(&devlink->lock);
8369 devlink_port->devlink = devlink;
8370 devlink_port->index = port_index;
8371 devlink_port->registered = true;
8372 spin_lock_init(&devlink_port->type_lock);
8373 INIT_LIST_HEAD(&devlink_port->reporter_list);
8374 mutex_init(&devlink_port->reporters_lock);
8375 list_add_tail(&devlink_port->list, &devlink->port_list);
8376 INIT_LIST_HEAD(&devlink_port->param_list);
8377 INIT_LIST_HEAD(&devlink_port->region_list);
8378 mutex_unlock(&devlink->lock);
8379 INIT_DELAYED_WORK(&devlink_port->type_warn_dw, &devlink_port_type_warn);
8380 devlink_port_type_warn_schedule(devlink_port);
8381 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
8384 EXPORT_SYMBOL_GPL(devlink_port_register);
8387 * devlink_port_unregister - Unregister devlink port
8389 * @devlink_port: devlink port
8391 void devlink_port_unregister(struct devlink_port *devlink_port)
8393 struct devlink *devlink = devlink_port->devlink;
8395 devlink_port_type_warn_cancel(devlink_port);
8396 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
8397 mutex_lock(&devlink->lock);
8398 list_del(&devlink_port->list);
8399 mutex_unlock(&devlink->lock);
8400 WARN_ON(!list_empty(&devlink_port->reporter_list));
8401 WARN_ON(!list_empty(&devlink_port->region_list));
8402 mutex_destroy(&devlink_port->reporters_lock);
8404 EXPORT_SYMBOL_GPL(devlink_port_unregister);
8406 static void __devlink_port_type_set(struct devlink_port *devlink_port,
8407 enum devlink_port_type type,
8410 if (WARN_ON(!devlink_port->registered))
8412 devlink_port_type_warn_cancel(devlink_port);
8413 spin_lock_bh(&devlink_port->type_lock);
8414 devlink_port->type = type;
8415 devlink_port->type_dev = type_dev;
8416 spin_unlock_bh(&devlink_port->type_lock);
8417 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
8420 static void devlink_port_type_netdev_checks(struct devlink_port *devlink_port,
8421 struct net_device *netdev)
8423 const struct net_device_ops *ops = netdev->netdev_ops;
8425 /* If driver registers devlink port, it should set devlink port
8426 * attributes accordingly so the compat functions are called
8427 * and the original ops are not used.
8429 if (ops->ndo_get_phys_port_name) {
8430 /* Some drivers use the same set of ndos for netdevs
8431 * that have devlink_port registered and also for
8432 * those who don't. Make sure that ndo_get_phys_port_name
8433 * returns -EOPNOTSUPP here in case it is defined.
8436 char name[IFNAMSIZ];
8439 err = ops->ndo_get_phys_port_name(netdev, name, sizeof(name));
8440 WARN_ON(err != -EOPNOTSUPP);
8442 if (ops->ndo_get_port_parent_id) {
8443 /* Some drivers use the same set of ndos for netdevs
8444 * that have devlink_port registered and also for
8445 * those who don't. Make sure that ndo_get_port_parent_id
8446 * returns -EOPNOTSUPP here in case it is defined.
8449 struct netdev_phys_item_id ppid;
8452 err = ops->ndo_get_port_parent_id(netdev, &ppid);
8453 WARN_ON(err != -EOPNOTSUPP);
8458 * devlink_port_type_eth_set - Set port type to Ethernet
8460 * @devlink_port: devlink port
8461 * @netdev: related netdevice
8463 void devlink_port_type_eth_set(struct devlink_port *devlink_port,
8464 struct net_device *netdev)
8467 devlink_port_type_netdev_checks(devlink_port, netdev);
8469 dev_warn(devlink_port->devlink->dev,
8470 "devlink port type for port %d set to Ethernet without a software interface reference, device type not supported by the kernel?\n",
8471 devlink_port->index);
8473 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH, netdev);
8475 EXPORT_SYMBOL_GPL(devlink_port_type_eth_set);
8478 * devlink_port_type_ib_set - Set port type to InfiniBand
8480 * @devlink_port: devlink port
8481 * @ibdev: related IB device
8483 void devlink_port_type_ib_set(struct devlink_port *devlink_port,
8484 struct ib_device *ibdev)
8486 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_IB, ibdev);
8488 EXPORT_SYMBOL_GPL(devlink_port_type_ib_set);
8491 * devlink_port_type_clear - Clear port type
8493 * @devlink_port: devlink port
8495 void devlink_port_type_clear(struct devlink_port *devlink_port)
8497 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET, NULL);
8498 devlink_port_type_warn_schedule(devlink_port);
8500 EXPORT_SYMBOL_GPL(devlink_port_type_clear);
8502 static int __devlink_port_attrs_set(struct devlink_port *devlink_port,
8503 enum devlink_port_flavour flavour)
8505 struct devlink_port_attrs *attrs = &devlink_port->attrs;
8507 devlink_port->attrs_set = true;
8508 attrs->flavour = flavour;
8509 if (attrs->switch_id.id_len) {
8510 devlink_port->switch_port = true;
8511 if (WARN_ON(attrs->switch_id.id_len > MAX_PHYS_ITEM_ID_LEN))
8512 attrs->switch_id.id_len = MAX_PHYS_ITEM_ID_LEN;
8514 devlink_port->switch_port = false;
8520 * devlink_port_attrs_set - Set port attributes
8522 * @devlink_port: devlink port
8523 * @attrs: devlink port attrs
8525 void devlink_port_attrs_set(struct devlink_port *devlink_port,
8526 struct devlink_port_attrs *attrs)
8530 if (WARN_ON(devlink_port->registered))
8532 devlink_port->attrs = *attrs;
8533 ret = __devlink_port_attrs_set(devlink_port, attrs->flavour);
8536 WARN_ON(attrs->splittable && attrs->split);
8538 EXPORT_SYMBOL_GPL(devlink_port_attrs_set);
8541 * devlink_port_attrs_pci_pf_set - Set PCI PF port attributes
8543 * @devlink_port: devlink port
8544 * @controller: associated controller number for the devlink port instance
8545 * @pf: associated PF for the devlink port instance
8546 * @external: indicates if the port is for an external controller
8548 void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port, u32 controller,
8549 u16 pf, bool external)
8551 struct devlink_port_attrs *attrs = &devlink_port->attrs;
8554 if (WARN_ON(devlink_port->registered))
8556 ret = __devlink_port_attrs_set(devlink_port,
8557 DEVLINK_PORT_FLAVOUR_PCI_PF);
8560 attrs->pci_pf.controller = controller;
8561 attrs->pci_pf.pf = pf;
8562 attrs->pci_pf.external = external;
8564 EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_pf_set);
8567 * devlink_port_attrs_pci_vf_set - Set PCI VF port attributes
8569 * @devlink_port: devlink port
8570 * @controller: associated controller number for the devlink port instance
8571 * @pf: associated PF for the devlink port instance
8572 * @vf: associated VF of a PF for the devlink port instance
8573 * @external: indicates if the port is for an external controller
8575 void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port, u32 controller,
8576 u16 pf, u16 vf, bool external)
8578 struct devlink_port_attrs *attrs = &devlink_port->attrs;
8581 if (WARN_ON(devlink_port->registered))
8583 ret = __devlink_port_attrs_set(devlink_port,
8584 DEVLINK_PORT_FLAVOUR_PCI_VF);
8587 attrs->pci_vf.controller = controller;
8588 attrs->pci_vf.pf = pf;
8589 attrs->pci_vf.vf = vf;
8590 attrs->pci_vf.external = external;
8592 EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_vf_set);
8595 * devlink_port_attrs_pci_sf_set - Set PCI SF port attributes
8597 * @devlink_port: devlink port
8598 * @controller: associated controller number for the devlink port instance
8599 * @pf: associated PF for the devlink port instance
8600 * @sf: associated SF of a PF for the devlink port instance
8601 * @external: indicates if the port is for an external controller
8603 void devlink_port_attrs_pci_sf_set(struct devlink_port *devlink_port, u32 controller,
8604 u16 pf, u32 sf, bool external)
8606 struct devlink_port_attrs *attrs = &devlink_port->attrs;
8609 if (WARN_ON(devlink_port->registered))
8611 ret = __devlink_port_attrs_set(devlink_port,
8612 DEVLINK_PORT_FLAVOUR_PCI_SF);
8615 attrs->pci_sf.controller = controller;
8616 attrs->pci_sf.pf = pf;
8617 attrs->pci_sf.sf = sf;
8618 attrs->pci_sf.external = external;
8620 EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_sf_set);
8622 static int __devlink_port_phys_port_name_get(struct devlink_port *devlink_port,
8623 char *name, size_t len)
8625 struct devlink_port_attrs *attrs = &devlink_port->attrs;
8628 if (!devlink_port->attrs_set)
8631 switch (attrs->flavour) {
8632 case DEVLINK_PORT_FLAVOUR_PHYSICAL:
8634 n = snprintf(name, len, "p%u", attrs->phys.port_number);
8636 n = snprintf(name, len, "p%us%u",
8637 attrs->phys.port_number,
8638 attrs->phys.split_subport_number);
8640 case DEVLINK_PORT_FLAVOUR_CPU:
8641 case DEVLINK_PORT_FLAVOUR_DSA:
8642 case DEVLINK_PORT_FLAVOUR_UNUSED:
8643 /* As CPU and DSA ports do not have a netdevice associated
8644 * case should not ever happen.
8648 case DEVLINK_PORT_FLAVOUR_PCI_PF:
8649 if (attrs->pci_pf.external) {
8650 n = snprintf(name, len, "c%u", attrs->pci_pf.controller);
8656 n = snprintf(name, len, "pf%u", attrs->pci_pf.pf);
8658 case DEVLINK_PORT_FLAVOUR_PCI_VF:
8659 if (attrs->pci_vf.external) {
8660 n = snprintf(name, len, "c%u", attrs->pci_vf.controller);
8666 n = snprintf(name, len, "pf%uvf%u",
8667 attrs->pci_vf.pf, attrs->pci_vf.vf);
8669 case DEVLINK_PORT_FLAVOUR_PCI_SF:
8670 if (attrs->pci_sf.external) {
8671 n = snprintf(name, len, "c%u", attrs->pci_sf.controller);
8677 n = snprintf(name, len, "pf%usf%u", attrs->pci_sf.pf,
8680 case DEVLINK_PORT_FLAVOUR_VIRTUAL:
8690 int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
8691 u32 size, u16 ingress_pools_count,
8692 u16 egress_pools_count, u16 ingress_tc_count,
8693 u16 egress_tc_count)
8695 struct devlink_sb *devlink_sb;
8698 mutex_lock(&devlink->lock);
8699 if (devlink_sb_index_exists(devlink, sb_index)) {
8704 devlink_sb = kzalloc(sizeof(*devlink_sb), GFP_KERNEL);
8709 devlink_sb->index = sb_index;
8710 devlink_sb->size = size;
8711 devlink_sb->ingress_pools_count = ingress_pools_count;
8712 devlink_sb->egress_pools_count = egress_pools_count;
8713 devlink_sb->ingress_tc_count = ingress_tc_count;
8714 devlink_sb->egress_tc_count = egress_tc_count;
8715 list_add_tail(&devlink_sb->list, &devlink->sb_list);
8717 mutex_unlock(&devlink->lock);
8720 EXPORT_SYMBOL_GPL(devlink_sb_register);
8722 void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index)
8724 struct devlink_sb *devlink_sb;
8726 mutex_lock(&devlink->lock);
8727 devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
8728 WARN_ON(!devlink_sb);
8729 list_del(&devlink_sb->list);
8730 mutex_unlock(&devlink->lock);
8733 EXPORT_SYMBOL_GPL(devlink_sb_unregister);
8736 * devlink_dpipe_headers_register - register dpipe headers
8739 * @dpipe_headers: dpipe header array
8741 * Register the headers supported by hardware.
8743 int devlink_dpipe_headers_register(struct devlink *devlink,
8744 struct devlink_dpipe_headers *dpipe_headers)
8746 mutex_lock(&devlink->lock);
8747 devlink->dpipe_headers = dpipe_headers;
8748 mutex_unlock(&devlink->lock);
8751 EXPORT_SYMBOL_GPL(devlink_dpipe_headers_register);
8754 * devlink_dpipe_headers_unregister - unregister dpipe headers
8758 * Unregister the headers supported by hardware.
8760 void devlink_dpipe_headers_unregister(struct devlink *devlink)
8762 mutex_lock(&devlink->lock);
8763 devlink->dpipe_headers = NULL;
8764 mutex_unlock(&devlink->lock);
8766 EXPORT_SYMBOL_GPL(devlink_dpipe_headers_unregister);
8769 * devlink_dpipe_table_counter_enabled - check if counter allocation
8772 * @table_name: tables name
8774 * Used by driver to check if counter allocation is required.
8775 * After counter allocation is turned on the table entries
8776 * are updated to include counter statistics.
8778 * After that point on the driver must respect the counter
8779 * state so that each entry added to the table is added
8782 bool devlink_dpipe_table_counter_enabled(struct devlink *devlink,
8783 const char *table_name)
8785 struct devlink_dpipe_table *table;
8789 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
8790 table_name, devlink);
8793 enabled = table->counters_enabled;
8797 EXPORT_SYMBOL_GPL(devlink_dpipe_table_counter_enabled);
8800 * devlink_dpipe_table_register - register dpipe table
8803 * @table_name: table name
8804 * @table_ops: table ops
8806 * @counter_control_extern: external control for counters
8808 int devlink_dpipe_table_register(struct devlink *devlink,
8809 const char *table_name,
8810 struct devlink_dpipe_table_ops *table_ops,
8811 void *priv, bool counter_control_extern)
8813 struct devlink_dpipe_table *table;
8816 if (WARN_ON(!table_ops->size_get))
8819 mutex_lock(&devlink->lock);
8821 if (devlink_dpipe_table_find(&devlink->dpipe_table_list, table_name,
8827 table = kzalloc(sizeof(*table), GFP_KERNEL);
8833 table->name = table_name;
8834 table->table_ops = table_ops;
8836 table->counter_control_extern = counter_control_extern;
8838 list_add_tail_rcu(&table->list, &devlink->dpipe_table_list);
8840 mutex_unlock(&devlink->lock);
8843 EXPORT_SYMBOL_GPL(devlink_dpipe_table_register);
8846 * devlink_dpipe_table_unregister - unregister dpipe table
8849 * @table_name: table name
8851 void devlink_dpipe_table_unregister(struct devlink *devlink,
8852 const char *table_name)
8854 struct devlink_dpipe_table *table;
8856 mutex_lock(&devlink->lock);
8857 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
8858 table_name, devlink);
8861 list_del_rcu(&table->list);
8862 mutex_unlock(&devlink->lock);
8863 kfree_rcu(table, rcu);
8866 mutex_unlock(&devlink->lock);
8868 EXPORT_SYMBOL_GPL(devlink_dpipe_table_unregister);
8871 * devlink_resource_register - devlink resource register
8874 * @resource_name: resource's name
8875 * @resource_size: resource's size
8876 * @resource_id: resource's id
8877 * @parent_resource_id: resource's parent id
8878 * @size_params: size parameters
8880 * Generic resources should reuse the same names across drivers.
8881 * Please see the generic resources list at:
8882 * Documentation/networking/devlink/devlink-resource.rst
8884 int devlink_resource_register(struct devlink *devlink,
8885 const char *resource_name,
8888 u64 parent_resource_id,
8889 const struct devlink_resource_size_params *size_params)
8891 struct devlink_resource *resource;
8892 struct list_head *resource_list;
8896 top_hierarchy = parent_resource_id == DEVLINK_RESOURCE_ID_PARENT_TOP;
8898 mutex_lock(&devlink->lock);
8899 resource = devlink_resource_find(devlink, NULL, resource_id);
8905 resource = kzalloc(sizeof(*resource), GFP_KERNEL);
8911 if (top_hierarchy) {
8912 resource_list = &devlink->resource_list;
8914 struct devlink_resource *parent_resource;
8916 parent_resource = devlink_resource_find(devlink, NULL,
8917 parent_resource_id);
8918 if (parent_resource) {
8919 resource_list = &parent_resource->resource_list;
8920 resource->parent = parent_resource;
8928 resource->name = resource_name;
8929 resource->size = resource_size;
8930 resource->size_new = resource_size;
8931 resource->id = resource_id;
8932 resource->size_valid = true;
8933 memcpy(&resource->size_params, size_params,
8934 sizeof(resource->size_params));
8935 INIT_LIST_HEAD(&resource->resource_list);
8936 list_add_tail(&resource->list, resource_list);
8938 mutex_unlock(&devlink->lock);
8941 EXPORT_SYMBOL_GPL(devlink_resource_register);
8944 * devlink_resources_unregister - free all resources
8947 * @resource: resource
8949 void devlink_resources_unregister(struct devlink *devlink,
8950 struct devlink_resource *resource)
8952 struct devlink_resource *tmp, *child_resource;
8953 struct list_head *resource_list;
8956 resource_list = &resource->resource_list;
8958 resource_list = &devlink->resource_list;
8961 mutex_lock(&devlink->lock);
8963 list_for_each_entry_safe(child_resource, tmp, resource_list, list) {
8964 devlink_resources_unregister(devlink, child_resource);
8965 list_del(&child_resource->list);
8966 kfree(child_resource);
8970 mutex_unlock(&devlink->lock);
8972 EXPORT_SYMBOL_GPL(devlink_resources_unregister);
8975 * devlink_resource_size_get - get and update size
8978 * @resource_id: the requested resource id
8979 * @p_resource_size: ptr to update
8981 int devlink_resource_size_get(struct devlink *devlink,
8983 u64 *p_resource_size)
8985 struct devlink_resource *resource;
8988 mutex_lock(&devlink->lock);
8989 resource = devlink_resource_find(devlink, NULL, resource_id);
8994 *p_resource_size = resource->size_new;
8995 resource->size = resource->size_new;
8997 mutex_unlock(&devlink->lock);
9000 EXPORT_SYMBOL_GPL(devlink_resource_size_get);
9003 * devlink_dpipe_table_resource_set - set the resource id
9006 * @table_name: table name
9007 * @resource_id: resource id
9008 * @resource_units: number of resource's units consumed per table's entry
9010 int devlink_dpipe_table_resource_set(struct devlink *devlink,
9011 const char *table_name, u64 resource_id,
9014 struct devlink_dpipe_table *table;
9017 mutex_lock(&devlink->lock);
9018 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
9019 table_name, devlink);
9024 table->resource_id = resource_id;
9025 table->resource_units = resource_units;
9026 table->resource_valid = true;
9028 mutex_unlock(&devlink->lock);
9031 EXPORT_SYMBOL_GPL(devlink_dpipe_table_resource_set);
9034 * devlink_resource_occ_get_register - register occupancy getter
9037 * @resource_id: resource id
9038 * @occ_get: occupancy getter callback
9039 * @occ_get_priv: occupancy getter callback priv
9041 void devlink_resource_occ_get_register(struct devlink *devlink,
9043 devlink_resource_occ_get_t *occ_get,
9046 struct devlink_resource *resource;
9048 mutex_lock(&devlink->lock);
9049 resource = devlink_resource_find(devlink, NULL, resource_id);
9050 if (WARN_ON(!resource))
9052 WARN_ON(resource->occ_get);
9054 resource->occ_get = occ_get;
9055 resource->occ_get_priv = occ_get_priv;
9057 mutex_unlock(&devlink->lock);
9059 EXPORT_SYMBOL_GPL(devlink_resource_occ_get_register);
9062 * devlink_resource_occ_get_unregister - unregister occupancy getter
9065 * @resource_id: resource id
9067 void devlink_resource_occ_get_unregister(struct devlink *devlink,
9070 struct devlink_resource *resource;
9072 mutex_lock(&devlink->lock);
9073 resource = devlink_resource_find(devlink, NULL, resource_id);
9074 if (WARN_ON(!resource))
9076 WARN_ON(!resource->occ_get);
9078 resource->occ_get = NULL;
9079 resource->occ_get_priv = NULL;
9081 mutex_unlock(&devlink->lock);
9083 EXPORT_SYMBOL_GPL(devlink_resource_occ_get_unregister);
9085 static int devlink_param_verify(const struct devlink_param *param)
9087 if (!param || !param->name || !param->supported_cmodes)
9090 return devlink_param_generic_verify(param);
9092 return devlink_param_driver_verify(param);
9095 static int __devlink_params_register(struct devlink *devlink,
9096 unsigned int port_index,
9097 struct list_head *param_list,
9098 const struct devlink_param *params,
9099 size_t params_count,
9100 enum devlink_command reg_cmd,
9101 enum devlink_command unreg_cmd)
9103 const struct devlink_param *param = params;
9107 mutex_lock(&devlink->lock);
9108 for (i = 0; i < params_count; i++, param++) {
9109 err = devlink_param_verify(param);
9113 err = devlink_param_register_one(devlink, port_index,
9114 param_list, param, reg_cmd);
9119 mutex_unlock(&devlink->lock);
9125 for (param--; i > 0; i--, param--)
9126 devlink_param_unregister_one(devlink, port_index, param_list,
9129 mutex_unlock(&devlink->lock);
9133 static void __devlink_params_unregister(struct devlink *devlink,
9134 unsigned int port_index,
9135 struct list_head *param_list,
9136 const struct devlink_param *params,
9137 size_t params_count,
9138 enum devlink_command cmd)
9140 const struct devlink_param *param = params;
9143 mutex_lock(&devlink->lock);
9144 for (i = 0; i < params_count; i++, param++)
9145 devlink_param_unregister_one(devlink, 0, param_list, param,
9147 mutex_unlock(&devlink->lock);
9151 * devlink_params_register - register configuration parameters
9154 * @params: configuration parameters array
9155 * @params_count: number of parameters provided
9157 * Register the configuration parameters supported by the driver.
9159 int devlink_params_register(struct devlink *devlink,
9160 const struct devlink_param *params,
9161 size_t params_count)
9163 return __devlink_params_register(devlink, 0, &devlink->param_list,
9164 params, params_count,
9165 DEVLINK_CMD_PARAM_NEW,
9166 DEVLINK_CMD_PARAM_DEL);
9168 EXPORT_SYMBOL_GPL(devlink_params_register);
9171 * devlink_params_unregister - unregister configuration parameters
9173 * @params: configuration parameters to unregister
9174 * @params_count: number of parameters provided
9176 void devlink_params_unregister(struct devlink *devlink,
9177 const struct devlink_param *params,
9178 size_t params_count)
9180 return __devlink_params_unregister(devlink, 0, &devlink->param_list,
9181 params, params_count,
9182 DEVLINK_CMD_PARAM_DEL);
9184 EXPORT_SYMBOL_GPL(devlink_params_unregister);
9187 * devlink_params_publish - publish configuration parameters
9191 * Publish previously registered configuration parameters.
9193 void devlink_params_publish(struct devlink *devlink)
9195 struct devlink_param_item *param_item;
9197 list_for_each_entry(param_item, &devlink->param_list, list) {
9198 if (param_item->published)
9200 param_item->published = true;
9201 devlink_param_notify(devlink, 0, param_item,
9202 DEVLINK_CMD_PARAM_NEW);
9205 EXPORT_SYMBOL_GPL(devlink_params_publish);
9208 * devlink_params_unpublish - unpublish configuration parameters
9212 * Unpublish previously registered configuration parameters.
9214 void devlink_params_unpublish(struct devlink *devlink)
9216 struct devlink_param_item *param_item;
9218 list_for_each_entry(param_item, &devlink->param_list, list) {
9219 if (!param_item->published)
9221 param_item->published = false;
9222 devlink_param_notify(devlink, 0, param_item,
9223 DEVLINK_CMD_PARAM_DEL);
9226 EXPORT_SYMBOL_GPL(devlink_params_unpublish);
9229 * devlink_port_params_register - register port configuration parameters
9231 * @devlink_port: devlink port
9232 * @params: configuration parameters array
9233 * @params_count: number of parameters provided
9235 * Register the configuration parameters supported by the port.
9237 int devlink_port_params_register(struct devlink_port *devlink_port,
9238 const struct devlink_param *params,
9239 size_t params_count)
9241 return __devlink_params_register(devlink_port->devlink,
9242 devlink_port->index,
9243 &devlink_port->param_list, params,
9245 DEVLINK_CMD_PORT_PARAM_NEW,
9246 DEVLINK_CMD_PORT_PARAM_DEL);
9248 EXPORT_SYMBOL_GPL(devlink_port_params_register);
9251 * devlink_port_params_unregister - unregister port configuration
9254 * @devlink_port: devlink port
9255 * @params: configuration parameters array
9256 * @params_count: number of parameters provided
9258 void devlink_port_params_unregister(struct devlink_port *devlink_port,
9259 const struct devlink_param *params,
9260 size_t params_count)
9262 return __devlink_params_unregister(devlink_port->devlink,
9263 devlink_port->index,
9264 &devlink_port->param_list,
9265 params, params_count,
9266 DEVLINK_CMD_PORT_PARAM_DEL);
9268 EXPORT_SYMBOL_GPL(devlink_port_params_unregister);
9271 __devlink_param_driverinit_value_get(struct list_head *param_list, u32 param_id,
9272 union devlink_param_value *init_val)
9274 struct devlink_param_item *param_item;
9276 param_item = devlink_param_find_by_id(param_list, param_id);
9280 if (!param_item->driverinit_value_valid ||
9281 !devlink_param_cmode_is_supported(param_item->param,
9282 DEVLINK_PARAM_CMODE_DRIVERINIT))
9285 if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
9286 strcpy(init_val->vstr, param_item->driverinit_value.vstr);
9288 *init_val = param_item->driverinit_value;
9294 __devlink_param_driverinit_value_set(struct devlink *devlink,
9295 unsigned int port_index,
9296 struct list_head *param_list, u32 param_id,
9297 union devlink_param_value init_val,
9298 enum devlink_command cmd)
9300 struct devlink_param_item *param_item;
9302 param_item = devlink_param_find_by_id(param_list, param_id);
9306 if (!devlink_param_cmode_is_supported(param_item->param,
9307 DEVLINK_PARAM_CMODE_DRIVERINIT))
9310 if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
9311 strcpy(param_item->driverinit_value.vstr, init_val.vstr);
9313 param_item->driverinit_value = init_val;
9314 param_item->driverinit_value_valid = true;
9316 devlink_param_notify(devlink, port_index, param_item, cmd);
9321 * devlink_param_driverinit_value_get - get configuration parameter
9322 * value for driver initializing
9325 * @param_id: parameter ID
9326 * @init_val: value of parameter in driverinit configuration mode
9328 * This function should be used by the driver to get driverinit
9329 * configuration for initialization after reload command.
9331 int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
9332 union devlink_param_value *init_val)
9334 if (!devlink_reload_supported(devlink->ops))
9337 return __devlink_param_driverinit_value_get(&devlink->param_list,
9338 param_id, init_val);
9340 EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_get);
9343 * devlink_param_driverinit_value_set - set value of configuration
9344 * parameter for driverinit
9345 * configuration mode
9348 * @param_id: parameter ID
9349 * @init_val: value of parameter to set for driverinit configuration mode
9351 * This function should be used by the driver to set driverinit
9352 * configuration mode default value.
9354 int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
9355 union devlink_param_value init_val)
9357 return __devlink_param_driverinit_value_set(devlink, 0,
9358 &devlink->param_list,
9360 DEVLINK_CMD_PARAM_NEW);
9362 EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_set);
9365 * devlink_port_param_driverinit_value_get - get configuration parameter
9366 * value for driver initializing
9368 * @devlink_port: devlink_port
9369 * @param_id: parameter ID
9370 * @init_val: value of parameter in driverinit configuration mode
9372 * This function should be used by the driver to get driverinit
9373 * configuration for initialization after reload command.
9375 int devlink_port_param_driverinit_value_get(struct devlink_port *devlink_port,
9377 union devlink_param_value *init_val)
9379 struct devlink *devlink = devlink_port->devlink;
9381 if (!devlink_reload_supported(devlink->ops))
9384 return __devlink_param_driverinit_value_get(&devlink_port->param_list,
9385 param_id, init_val);
9387 EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_get);
9390 * devlink_port_param_driverinit_value_set - set value of configuration
9391 * parameter for driverinit
9392 * configuration mode
9394 * @devlink_port: devlink_port
9395 * @param_id: parameter ID
9396 * @init_val: value of parameter to set for driverinit configuration mode
9398 * This function should be used by the driver to set driverinit
9399 * configuration mode default value.
9401 int devlink_port_param_driverinit_value_set(struct devlink_port *devlink_port,
9403 union devlink_param_value init_val)
9405 return __devlink_param_driverinit_value_set(devlink_port->devlink,
9406 devlink_port->index,
9407 &devlink_port->param_list,
9409 DEVLINK_CMD_PORT_PARAM_NEW);
9411 EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_set);
9414 * devlink_param_value_changed - notify devlink on a parameter's value
9415 * change. Should be called by the driver
9416 * right after the change.
9419 * @param_id: parameter ID
9421 * This function should be used by the driver to notify devlink on value
9422 * change, excluding driverinit configuration mode.
9423 * For driverinit configuration mode driver should use the function
9425 void devlink_param_value_changed(struct devlink *devlink, u32 param_id)
9427 struct devlink_param_item *param_item;
9429 param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
9430 WARN_ON(!param_item);
9432 devlink_param_notify(devlink, 0, param_item, DEVLINK_CMD_PARAM_NEW);
9434 EXPORT_SYMBOL_GPL(devlink_param_value_changed);
9437 * devlink_port_param_value_changed - notify devlink on a parameter's value
9438 * change. Should be called by the driver
9439 * right after the change.
9441 * @devlink_port: devlink_port
9442 * @param_id: parameter ID
9444 * This function should be used by the driver to notify devlink on value
9445 * change, excluding driverinit configuration mode.
9446 * For driverinit configuration mode driver should use the function
9447 * devlink_port_param_driverinit_value_set() instead.
9449 void devlink_port_param_value_changed(struct devlink_port *devlink_port,
9452 struct devlink_param_item *param_item;
9454 param_item = devlink_param_find_by_id(&devlink_port->param_list,
9456 WARN_ON(!param_item);
9458 devlink_param_notify(devlink_port->devlink, devlink_port->index,
9459 param_item, DEVLINK_CMD_PORT_PARAM_NEW);
9461 EXPORT_SYMBOL_GPL(devlink_port_param_value_changed);
9464 * devlink_param_value_str_fill - Safely fill-up the string preventing
9465 * from overflow of the preallocated buffer
9467 * @dst_val: destination devlink_param_value
9468 * @src: source buffer
9470 void devlink_param_value_str_fill(union devlink_param_value *dst_val,
9475 len = strlcpy(dst_val->vstr, src, __DEVLINK_PARAM_MAX_STRING_VALUE);
9476 WARN_ON(len >= __DEVLINK_PARAM_MAX_STRING_VALUE);
9478 EXPORT_SYMBOL_GPL(devlink_param_value_str_fill);
9481 * devlink_region_create - create a new address region
9484 * @ops: region operations and name
9485 * @region_max_snapshots: Maximum supported number of snapshots for region
9486 * @region_size: size of region
9488 struct devlink_region *
9489 devlink_region_create(struct devlink *devlink,
9490 const struct devlink_region_ops *ops,
9491 u32 region_max_snapshots, u64 region_size)
9493 struct devlink_region *region;
9496 if (WARN_ON(!ops) || WARN_ON(!ops->destructor))
9497 return ERR_PTR(-EINVAL);
9499 mutex_lock(&devlink->lock);
9501 if (devlink_region_get_by_name(devlink, ops->name)) {
9506 region = kzalloc(sizeof(*region), GFP_KERNEL);
9512 region->devlink = devlink;
9513 region->max_snapshots = region_max_snapshots;
9515 region->size = region_size;
9516 INIT_LIST_HEAD(®ion->snapshot_list);
9517 list_add_tail(®ion->list, &devlink->region_list);
9518 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
9520 mutex_unlock(&devlink->lock);
9524 mutex_unlock(&devlink->lock);
9525 return ERR_PTR(err);
9527 EXPORT_SYMBOL_GPL(devlink_region_create);
9530 * devlink_port_region_create - create a new address region for a port
9532 * @port: devlink port
9533 * @ops: region operations and name
9534 * @region_max_snapshots: Maximum supported number of snapshots for region
9535 * @region_size: size of region
9537 struct devlink_region *
9538 devlink_port_region_create(struct devlink_port *port,
9539 const struct devlink_port_region_ops *ops,
9540 u32 region_max_snapshots, u64 region_size)
9542 struct devlink *devlink = port->devlink;
9543 struct devlink_region *region;
9546 if (WARN_ON(!ops) || WARN_ON(!ops->destructor))
9547 return ERR_PTR(-EINVAL);
9549 mutex_lock(&devlink->lock);
9551 if (devlink_port_region_get_by_name(port, ops->name)) {
9556 region = kzalloc(sizeof(*region), GFP_KERNEL);
9562 region->devlink = devlink;
9563 region->port = port;
9564 region->max_snapshots = region_max_snapshots;
9565 region->port_ops = ops;
9566 region->size = region_size;
9567 INIT_LIST_HEAD(®ion->snapshot_list);
9568 list_add_tail(®ion->list, &port->region_list);
9569 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
9571 mutex_unlock(&devlink->lock);
9575 mutex_unlock(&devlink->lock);
9576 return ERR_PTR(err);
9578 EXPORT_SYMBOL_GPL(devlink_port_region_create);
9581 * devlink_region_destroy - destroy address region
9583 * @region: devlink region to destroy
9585 void devlink_region_destroy(struct devlink_region *region)
9587 struct devlink *devlink = region->devlink;
9588 struct devlink_snapshot *snapshot, *ts;
9590 mutex_lock(&devlink->lock);
9592 /* Free all snapshots of region */
9593 list_for_each_entry_safe(snapshot, ts, ®ion->snapshot_list, list)
9594 devlink_region_snapshot_del(region, snapshot);
9596 list_del(®ion->list);
9598 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL);
9599 mutex_unlock(&devlink->lock);
9602 EXPORT_SYMBOL_GPL(devlink_region_destroy);
9605 * devlink_region_snapshot_id_get - get snapshot ID
9607 * This callback should be called when adding a new snapshot,
9608 * Driver should use the same id for multiple snapshots taken
9609 * on multiple regions at the same time/by the same trigger.
9611 * The caller of this function must use devlink_region_snapshot_id_put
9612 * when finished creating regions using this id.
9614 * Returns zero on success, or a negative error code on failure.
9617 * @id: storage to return id
9619 int devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id)
9623 mutex_lock(&devlink->lock);
9624 err = __devlink_region_snapshot_id_get(devlink, id);
9625 mutex_unlock(&devlink->lock);
9629 EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_get);
9632 * devlink_region_snapshot_id_put - put snapshot ID reference
9634 * This should be called by a driver after finishing creating snapshots
9635 * with an id. Doing so ensures that the ID can later be released in the
9636 * event that all snapshots using it have been destroyed.
9639 * @id: id to release reference on
9641 void devlink_region_snapshot_id_put(struct devlink *devlink, u32 id)
9643 mutex_lock(&devlink->lock);
9644 __devlink_snapshot_id_decrement(devlink, id);
9645 mutex_unlock(&devlink->lock);
9647 EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_put);
9650 * devlink_region_snapshot_create - create a new snapshot
9651 * This will add a new snapshot of a region. The snapshot
9652 * will be stored on the region struct and can be accessed
9653 * from devlink. This is useful for future analyses of snapshots.
9654 * Multiple snapshots can be created on a region.
9655 * The @snapshot_id should be obtained using the getter function.
9657 * @region: devlink region of the snapshot
9658 * @data: snapshot data
9659 * @snapshot_id: snapshot id to be created
9661 int devlink_region_snapshot_create(struct devlink_region *region,
9662 u8 *data, u32 snapshot_id)
9664 struct devlink *devlink = region->devlink;
9667 mutex_lock(&devlink->lock);
9668 err = __devlink_region_snapshot_create(region, data, snapshot_id);
9669 mutex_unlock(&devlink->lock);
9673 EXPORT_SYMBOL_GPL(devlink_region_snapshot_create);
9675 #define DEVLINK_TRAP(_id, _type) \
9677 .type = DEVLINK_TRAP_TYPE_##_type, \
9678 .id = DEVLINK_TRAP_GENERIC_ID_##_id, \
9679 .name = DEVLINK_TRAP_GENERIC_NAME_##_id, \
9682 static const struct devlink_trap devlink_trap_generic[] = {
9683 DEVLINK_TRAP(SMAC_MC, DROP),
9684 DEVLINK_TRAP(VLAN_TAG_MISMATCH, DROP),
9685 DEVLINK_TRAP(INGRESS_VLAN_FILTER, DROP),
9686 DEVLINK_TRAP(INGRESS_STP_FILTER, DROP),
9687 DEVLINK_TRAP(EMPTY_TX_LIST, DROP),
9688 DEVLINK_TRAP(PORT_LOOPBACK_FILTER, DROP),
9689 DEVLINK_TRAP(BLACKHOLE_ROUTE, DROP),
9690 DEVLINK_TRAP(TTL_ERROR, EXCEPTION),
9691 DEVLINK_TRAP(TAIL_DROP, DROP),
9692 DEVLINK_TRAP(NON_IP_PACKET, DROP),
9693 DEVLINK_TRAP(UC_DIP_MC_DMAC, DROP),
9694 DEVLINK_TRAP(DIP_LB, DROP),
9695 DEVLINK_TRAP(SIP_MC, DROP),
9696 DEVLINK_TRAP(SIP_LB, DROP),
9697 DEVLINK_TRAP(CORRUPTED_IP_HDR, DROP),
9698 DEVLINK_TRAP(IPV4_SIP_BC, DROP),
9699 DEVLINK_TRAP(IPV6_MC_DIP_RESERVED_SCOPE, DROP),
9700 DEVLINK_TRAP(IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE, DROP),
9701 DEVLINK_TRAP(MTU_ERROR, EXCEPTION),
9702 DEVLINK_TRAP(UNRESOLVED_NEIGH, EXCEPTION),
9703 DEVLINK_TRAP(RPF, EXCEPTION),
9704 DEVLINK_TRAP(REJECT_ROUTE, EXCEPTION),
9705 DEVLINK_TRAP(IPV4_LPM_UNICAST_MISS, EXCEPTION),
9706 DEVLINK_TRAP(IPV6_LPM_UNICAST_MISS, EXCEPTION),
9707 DEVLINK_TRAP(NON_ROUTABLE, DROP),
9708 DEVLINK_TRAP(DECAP_ERROR, EXCEPTION),
9709 DEVLINK_TRAP(OVERLAY_SMAC_MC, DROP),
9710 DEVLINK_TRAP(INGRESS_FLOW_ACTION_DROP, DROP),
9711 DEVLINK_TRAP(EGRESS_FLOW_ACTION_DROP, DROP),
9712 DEVLINK_TRAP(STP, CONTROL),
9713 DEVLINK_TRAP(LACP, CONTROL),
9714 DEVLINK_TRAP(LLDP, CONTROL),
9715 DEVLINK_TRAP(IGMP_QUERY, CONTROL),
9716 DEVLINK_TRAP(IGMP_V1_REPORT, CONTROL),
9717 DEVLINK_TRAP(IGMP_V2_REPORT, CONTROL),
9718 DEVLINK_TRAP(IGMP_V3_REPORT, CONTROL),
9719 DEVLINK_TRAP(IGMP_V2_LEAVE, CONTROL),
9720 DEVLINK_TRAP(MLD_QUERY, CONTROL),
9721 DEVLINK_TRAP(MLD_V1_REPORT, CONTROL),
9722 DEVLINK_TRAP(MLD_V2_REPORT, CONTROL),
9723 DEVLINK_TRAP(MLD_V1_DONE, CONTROL),
9724 DEVLINK_TRAP(IPV4_DHCP, CONTROL),
9725 DEVLINK_TRAP(IPV6_DHCP, CONTROL),
9726 DEVLINK_TRAP(ARP_REQUEST, CONTROL),
9727 DEVLINK_TRAP(ARP_RESPONSE, CONTROL),
9728 DEVLINK_TRAP(ARP_OVERLAY, CONTROL),
9729 DEVLINK_TRAP(IPV6_NEIGH_SOLICIT, CONTROL),
9730 DEVLINK_TRAP(IPV6_NEIGH_ADVERT, CONTROL),
9731 DEVLINK_TRAP(IPV4_BFD, CONTROL),
9732 DEVLINK_TRAP(IPV6_BFD, CONTROL),
9733 DEVLINK_TRAP(IPV4_OSPF, CONTROL),
9734 DEVLINK_TRAP(IPV6_OSPF, CONTROL),
9735 DEVLINK_TRAP(IPV4_BGP, CONTROL),
9736 DEVLINK_TRAP(IPV6_BGP, CONTROL),
9737 DEVLINK_TRAP(IPV4_VRRP, CONTROL),
9738 DEVLINK_TRAP(IPV6_VRRP, CONTROL),
9739 DEVLINK_TRAP(IPV4_PIM, CONTROL),
9740 DEVLINK_TRAP(IPV6_PIM, CONTROL),
9741 DEVLINK_TRAP(UC_LB, CONTROL),
9742 DEVLINK_TRAP(LOCAL_ROUTE, CONTROL),
9743 DEVLINK_TRAP(EXTERNAL_ROUTE, CONTROL),
9744 DEVLINK_TRAP(IPV6_UC_DIP_LINK_LOCAL_SCOPE, CONTROL),
9745 DEVLINK_TRAP(IPV6_DIP_ALL_NODES, CONTROL),
9746 DEVLINK_TRAP(IPV6_DIP_ALL_ROUTERS, CONTROL),
9747 DEVLINK_TRAP(IPV6_ROUTER_SOLICIT, CONTROL),
9748 DEVLINK_TRAP(IPV6_ROUTER_ADVERT, CONTROL),
9749 DEVLINK_TRAP(IPV6_REDIRECT, CONTROL),
9750 DEVLINK_TRAP(IPV4_ROUTER_ALERT, CONTROL),
9751 DEVLINK_TRAP(IPV6_ROUTER_ALERT, CONTROL),
9752 DEVLINK_TRAP(PTP_EVENT, CONTROL),
9753 DEVLINK_TRAP(PTP_GENERAL, CONTROL),
9754 DEVLINK_TRAP(FLOW_ACTION_SAMPLE, CONTROL),
9755 DEVLINK_TRAP(FLOW_ACTION_TRAP, CONTROL),
9756 DEVLINK_TRAP(EARLY_DROP, DROP),
9757 DEVLINK_TRAP(VXLAN_PARSING, DROP),
9758 DEVLINK_TRAP(LLC_SNAP_PARSING, DROP),
9759 DEVLINK_TRAP(VLAN_PARSING, DROP),
9760 DEVLINK_TRAP(PPPOE_PPP_PARSING, DROP),
9761 DEVLINK_TRAP(MPLS_PARSING, DROP),
9762 DEVLINK_TRAP(ARP_PARSING, DROP),
9763 DEVLINK_TRAP(IP_1_PARSING, DROP),
9764 DEVLINK_TRAP(IP_N_PARSING, DROP),
9765 DEVLINK_TRAP(GRE_PARSING, DROP),
9766 DEVLINK_TRAP(UDP_PARSING, DROP),
9767 DEVLINK_TRAP(TCP_PARSING, DROP),
9768 DEVLINK_TRAP(IPSEC_PARSING, DROP),
9769 DEVLINK_TRAP(SCTP_PARSING, DROP),
9770 DEVLINK_TRAP(DCCP_PARSING, DROP),
9771 DEVLINK_TRAP(GTP_PARSING, DROP),
9772 DEVLINK_TRAP(ESP_PARSING, DROP),
9773 DEVLINK_TRAP(BLACKHOLE_NEXTHOP, DROP),
9774 DEVLINK_TRAP(DMAC_FILTER, DROP),
9777 #define DEVLINK_TRAP_GROUP(_id) \
9779 .id = DEVLINK_TRAP_GROUP_GENERIC_ID_##_id, \
9780 .name = DEVLINK_TRAP_GROUP_GENERIC_NAME_##_id, \
9783 static const struct devlink_trap_group devlink_trap_group_generic[] = {
9784 DEVLINK_TRAP_GROUP(L2_DROPS),
9785 DEVLINK_TRAP_GROUP(L3_DROPS),
9786 DEVLINK_TRAP_GROUP(L3_EXCEPTIONS),
9787 DEVLINK_TRAP_GROUP(BUFFER_DROPS),
9788 DEVLINK_TRAP_GROUP(TUNNEL_DROPS),
9789 DEVLINK_TRAP_GROUP(ACL_DROPS),
9790 DEVLINK_TRAP_GROUP(STP),
9791 DEVLINK_TRAP_GROUP(LACP),
9792 DEVLINK_TRAP_GROUP(LLDP),
9793 DEVLINK_TRAP_GROUP(MC_SNOOPING),
9794 DEVLINK_TRAP_GROUP(DHCP),
9795 DEVLINK_TRAP_GROUP(NEIGH_DISCOVERY),
9796 DEVLINK_TRAP_GROUP(BFD),
9797 DEVLINK_TRAP_GROUP(OSPF),
9798 DEVLINK_TRAP_GROUP(BGP),
9799 DEVLINK_TRAP_GROUP(VRRP),
9800 DEVLINK_TRAP_GROUP(PIM),
9801 DEVLINK_TRAP_GROUP(UC_LB),
9802 DEVLINK_TRAP_GROUP(LOCAL_DELIVERY),
9803 DEVLINK_TRAP_GROUP(EXTERNAL_DELIVERY),
9804 DEVLINK_TRAP_GROUP(IPV6),
9805 DEVLINK_TRAP_GROUP(PTP_EVENT),
9806 DEVLINK_TRAP_GROUP(PTP_GENERAL),
9807 DEVLINK_TRAP_GROUP(ACL_SAMPLE),
9808 DEVLINK_TRAP_GROUP(ACL_TRAP),
9809 DEVLINK_TRAP_GROUP(PARSER_ERROR_DROPS),
9812 static int devlink_trap_generic_verify(const struct devlink_trap *trap)
9814 if (trap->id > DEVLINK_TRAP_GENERIC_ID_MAX)
9817 if (strcmp(trap->name, devlink_trap_generic[trap->id].name))
9820 if (trap->type != devlink_trap_generic[trap->id].type)
9826 static int devlink_trap_driver_verify(const struct devlink_trap *trap)
9830 if (trap->id <= DEVLINK_TRAP_GENERIC_ID_MAX)
9833 for (i = 0; i < ARRAY_SIZE(devlink_trap_generic); i++) {
9834 if (!strcmp(trap->name, devlink_trap_generic[i].name))
9841 static int devlink_trap_verify(const struct devlink_trap *trap)
9843 if (!trap || !trap->name)
9847 return devlink_trap_generic_verify(trap);
9849 return devlink_trap_driver_verify(trap);
9853 devlink_trap_group_generic_verify(const struct devlink_trap_group *group)
9855 if (group->id > DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
9858 if (strcmp(group->name, devlink_trap_group_generic[group->id].name))
9865 devlink_trap_group_driver_verify(const struct devlink_trap_group *group)
9869 if (group->id <= DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
9872 for (i = 0; i < ARRAY_SIZE(devlink_trap_group_generic); i++) {
9873 if (!strcmp(group->name, devlink_trap_group_generic[i].name))
9880 static int devlink_trap_group_verify(const struct devlink_trap_group *group)
9883 return devlink_trap_group_generic_verify(group);
9885 return devlink_trap_group_driver_verify(group);
9889 devlink_trap_group_notify(struct devlink *devlink,
9890 const struct devlink_trap_group_item *group_item,
9891 enum devlink_command cmd)
9893 struct sk_buff *msg;
9896 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_GROUP_NEW &&
9897 cmd != DEVLINK_CMD_TRAP_GROUP_DEL);
9899 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9903 err = devlink_nl_trap_group_fill(msg, devlink, group_item, cmd, 0, 0,
9910 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
9911 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
9915 devlink_trap_item_group_link(struct devlink *devlink,
9916 struct devlink_trap_item *trap_item)
9918 u16 group_id = trap_item->trap->init_group_id;
9919 struct devlink_trap_group_item *group_item;
9921 group_item = devlink_trap_group_item_lookup_by_id(devlink, group_id);
9922 if (WARN_ON_ONCE(!group_item))
9925 trap_item->group_item = group_item;
9930 static void devlink_trap_notify(struct devlink *devlink,
9931 const struct devlink_trap_item *trap_item,
9932 enum devlink_command cmd)
9934 struct sk_buff *msg;
9937 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_NEW &&
9938 cmd != DEVLINK_CMD_TRAP_DEL);
9940 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9944 err = devlink_nl_trap_fill(msg, devlink, trap_item, cmd, 0, 0, 0);
9950 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
9951 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
9955 devlink_trap_register(struct devlink *devlink,
9956 const struct devlink_trap *trap, void *priv)
9958 struct devlink_trap_item *trap_item;
9961 if (devlink_trap_item_lookup(devlink, trap->name))
9964 trap_item = kzalloc(sizeof(*trap_item), GFP_KERNEL);
9968 trap_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
9969 if (!trap_item->stats) {
9971 goto err_stats_alloc;
9974 trap_item->trap = trap;
9975 trap_item->action = trap->init_action;
9976 trap_item->priv = priv;
9978 err = devlink_trap_item_group_link(devlink, trap_item);
9980 goto err_group_link;
9982 err = devlink->ops->trap_init(devlink, trap, trap_item);
9986 list_add_tail(&trap_item->list, &devlink->trap_list);
9987 devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_NEW);
9993 free_percpu(trap_item->stats);
9999 static void devlink_trap_unregister(struct devlink *devlink,
10000 const struct devlink_trap *trap)
10002 struct devlink_trap_item *trap_item;
10004 trap_item = devlink_trap_item_lookup(devlink, trap->name);
10005 if (WARN_ON_ONCE(!trap_item))
10008 devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_DEL);
10009 list_del(&trap_item->list);
10010 if (devlink->ops->trap_fini)
10011 devlink->ops->trap_fini(devlink, trap, trap_item);
10012 free_percpu(trap_item->stats);
10016 static void devlink_trap_disable(struct devlink *devlink,
10017 const struct devlink_trap *trap)
10019 struct devlink_trap_item *trap_item;
10021 trap_item = devlink_trap_item_lookup(devlink, trap->name);
10022 if (WARN_ON_ONCE(!trap_item))
10025 devlink->ops->trap_action_set(devlink, trap, DEVLINK_TRAP_ACTION_DROP,
10027 trap_item->action = DEVLINK_TRAP_ACTION_DROP;
10031 * devlink_traps_register - Register packet traps with devlink.
10032 * @devlink: devlink.
10033 * @traps: Packet traps.
10034 * @traps_count: Count of provided packet traps.
10035 * @priv: Driver private information.
10037 * Return: Non-zero value on failure.
10039 int devlink_traps_register(struct devlink *devlink,
10040 const struct devlink_trap *traps,
10041 size_t traps_count, void *priv)
10045 if (!devlink->ops->trap_init || !devlink->ops->trap_action_set)
10048 mutex_lock(&devlink->lock);
10049 for (i = 0; i < traps_count; i++) {
10050 const struct devlink_trap *trap = &traps[i];
10052 err = devlink_trap_verify(trap);
10054 goto err_trap_verify;
10056 err = devlink_trap_register(devlink, trap, priv);
10058 goto err_trap_register;
10060 mutex_unlock(&devlink->lock);
10066 for (i--; i >= 0; i--)
10067 devlink_trap_unregister(devlink, &traps[i]);
10068 mutex_unlock(&devlink->lock);
10071 EXPORT_SYMBOL_GPL(devlink_traps_register);
10074 * devlink_traps_unregister - Unregister packet traps from devlink.
10075 * @devlink: devlink.
10076 * @traps: Packet traps.
10077 * @traps_count: Count of provided packet traps.
10079 void devlink_traps_unregister(struct devlink *devlink,
10080 const struct devlink_trap *traps,
10081 size_t traps_count)
10085 mutex_lock(&devlink->lock);
10086 /* Make sure we do not have any packets in-flight while unregistering
10087 * traps by disabling all of them and waiting for a grace period.
10089 for (i = traps_count - 1; i >= 0; i--)
10090 devlink_trap_disable(devlink, &traps[i]);
10092 for (i = traps_count - 1; i >= 0; i--)
10093 devlink_trap_unregister(devlink, &traps[i]);
10094 mutex_unlock(&devlink->lock);
10096 EXPORT_SYMBOL_GPL(devlink_traps_unregister);
10099 devlink_trap_stats_update(struct devlink_stats __percpu *trap_stats,
10102 struct devlink_stats *stats;
10104 stats = this_cpu_ptr(trap_stats);
10105 u64_stats_update_begin(&stats->syncp);
10106 stats->rx_bytes += skb_len;
10107 stats->rx_packets++;
10108 u64_stats_update_end(&stats->syncp);
10112 devlink_trap_report_metadata_set(struct devlink_trap_metadata *metadata,
10113 const struct devlink_trap_item *trap_item,
10114 struct devlink_port *in_devlink_port,
10115 const struct flow_action_cookie *fa_cookie)
10117 metadata->trap_name = trap_item->trap->name;
10118 metadata->trap_group_name = trap_item->group_item->group->name;
10119 metadata->fa_cookie = fa_cookie;
10120 metadata->trap_type = trap_item->trap->type;
10122 spin_lock(&in_devlink_port->type_lock);
10123 if (in_devlink_port->type == DEVLINK_PORT_TYPE_ETH)
10124 metadata->input_dev = in_devlink_port->type_dev;
10125 spin_unlock(&in_devlink_port->type_lock);
10129 * devlink_trap_report - Report trapped packet to drop monitor.
10130 * @devlink: devlink.
10131 * @skb: Trapped packet.
10132 * @trap_ctx: Trap context.
10133 * @in_devlink_port: Input devlink port.
10134 * @fa_cookie: Flow action cookie. Could be NULL.
10136 void devlink_trap_report(struct devlink *devlink, struct sk_buff *skb,
10137 void *trap_ctx, struct devlink_port *in_devlink_port,
10138 const struct flow_action_cookie *fa_cookie)
10141 struct devlink_trap_item *trap_item = trap_ctx;
10143 devlink_trap_stats_update(trap_item->stats, skb->len);
10144 devlink_trap_stats_update(trap_item->group_item->stats, skb->len);
10146 if (trace_devlink_trap_report_enabled()) {
10147 struct devlink_trap_metadata metadata = {};
10149 devlink_trap_report_metadata_set(&metadata, trap_item,
10150 in_devlink_port, fa_cookie);
10151 trace_devlink_trap_report(devlink, skb, &metadata);
10154 EXPORT_SYMBOL_GPL(devlink_trap_report);
10157 * devlink_trap_ctx_priv - Trap context to driver private information.
10158 * @trap_ctx: Trap context.
10160 * Return: Driver private information passed during registration.
10162 void *devlink_trap_ctx_priv(void *trap_ctx)
10164 struct devlink_trap_item *trap_item = trap_ctx;
10166 return trap_item->priv;
10168 EXPORT_SYMBOL_GPL(devlink_trap_ctx_priv);
10171 devlink_trap_group_item_policer_link(struct devlink *devlink,
10172 struct devlink_trap_group_item *group_item)
10174 u32 policer_id = group_item->group->init_policer_id;
10175 struct devlink_trap_policer_item *policer_item;
10177 if (policer_id == 0)
10180 policer_item = devlink_trap_policer_item_lookup(devlink, policer_id);
10181 if (WARN_ON_ONCE(!policer_item))
10184 group_item->policer_item = policer_item;
10190 devlink_trap_group_register(struct devlink *devlink,
10191 const struct devlink_trap_group *group)
10193 struct devlink_trap_group_item *group_item;
10196 if (devlink_trap_group_item_lookup(devlink, group->name))
10199 group_item = kzalloc(sizeof(*group_item), GFP_KERNEL);
10203 group_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
10204 if (!group_item->stats) {
10206 goto err_stats_alloc;
10209 group_item->group = group;
10211 err = devlink_trap_group_item_policer_link(devlink, group_item);
10213 goto err_policer_link;
10215 if (devlink->ops->trap_group_init) {
10216 err = devlink->ops->trap_group_init(devlink, group);
10218 goto err_group_init;
10221 list_add_tail(&group_item->list, &devlink->trap_group_list);
10222 devlink_trap_group_notify(devlink, group_item,
10223 DEVLINK_CMD_TRAP_GROUP_NEW);
10229 free_percpu(group_item->stats);
10236 devlink_trap_group_unregister(struct devlink *devlink,
10237 const struct devlink_trap_group *group)
10239 struct devlink_trap_group_item *group_item;
10241 group_item = devlink_trap_group_item_lookup(devlink, group->name);
10242 if (WARN_ON_ONCE(!group_item))
10245 devlink_trap_group_notify(devlink, group_item,
10246 DEVLINK_CMD_TRAP_GROUP_DEL);
10247 list_del(&group_item->list);
10248 free_percpu(group_item->stats);
10253 * devlink_trap_groups_register - Register packet trap groups with devlink.
10254 * @devlink: devlink.
10255 * @groups: Packet trap groups.
10256 * @groups_count: Count of provided packet trap groups.
10258 * Return: Non-zero value on failure.
10260 int devlink_trap_groups_register(struct devlink *devlink,
10261 const struct devlink_trap_group *groups,
10262 size_t groups_count)
10266 mutex_lock(&devlink->lock);
10267 for (i = 0; i < groups_count; i++) {
10268 const struct devlink_trap_group *group = &groups[i];
10270 err = devlink_trap_group_verify(group);
10272 goto err_trap_group_verify;
10274 err = devlink_trap_group_register(devlink, group);
10276 goto err_trap_group_register;
10278 mutex_unlock(&devlink->lock);
10282 err_trap_group_register:
10283 err_trap_group_verify:
10284 for (i--; i >= 0; i--)
10285 devlink_trap_group_unregister(devlink, &groups[i]);
10286 mutex_unlock(&devlink->lock);
10289 EXPORT_SYMBOL_GPL(devlink_trap_groups_register);
10292 * devlink_trap_groups_unregister - Unregister packet trap groups from devlink.
10293 * @devlink: devlink.
10294 * @groups: Packet trap groups.
10295 * @groups_count: Count of provided packet trap groups.
10297 void devlink_trap_groups_unregister(struct devlink *devlink,
10298 const struct devlink_trap_group *groups,
10299 size_t groups_count)
10303 mutex_lock(&devlink->lock);
10304 for (i = groups_count - 1; i >= 0; i--)
10305 devlink_trap_group_unregister(devlink, &groups[i]);
10306 mutex_unlock(&devlink->lock);
10308 EXPORT_SYMBOL_GPL(devlink_trap_groups_unregister);
10311 devlink_trap_policer_notify(struct devlink *devlink,
10312 const struct devlink_trap_policer_item *policer_item,
10313 enum devlink_command cmd)
10315 struct sk_buff *msg;
10318 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_POLICER_NEW &&
10319 cmd != DEVLINK_CMD_TRAP_POLICER_DEL);
10321 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10325 err = devlink_nl_trap_policer_fill(msg, devlink, policer_item, cmd, 0,
10332 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
10333 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
10337 devlink_trap_policer_register(struct devlink *devlink,
10338 const struct devlink_trap_policer *policer)
10340 struct devlink_trap_policer_item *policer_item;
10343 if (devlink_trap_policer_item_lookup(devlink, policer->id))
10346 policer_item = kzalloc(sizeof(*policer_item), GFP_KERNEL);
10350 policer_item->policer = policer;
10351 policer_item->rate = policer->init_rate;
10352 policer_item->burst = policer->init_burst;
10354 if (devlink->ops->trap_policer_init) {
10355 err = devlink->ops->trap_policer_init(devlink, policer);
10357 goto err_policer_init;
10360 list_add_tail(&policer_item->list, &devlink->trap_policer_list);
10361 devlink_trap_policer_notify(devlink, policer_item,
10362 DEVLINK_CMD_TRAP_POLICER_NEW);
10367 kfree(policer_item);
10372 devlink_trap_policer_unregister(struct devlink *devlink,
10373 const struct devlink_trap_policer *policer)
10375 struct devlink_trap_policer_item *policer_item;
10377 policer_item = devlink_trap_policer_item_lookup(devlink, policer->id);
10378 if (WARN_ON_ONCE(!policer_item))
10381 devlink_trap_policer_notify(devlink, policer_item,
10382 DEVLINK_CMD_TRAP_POLICER_DEL);
10383 list_del(&policer_item->list);
10384 if (devlink->ops->trap_policer_fini)
10385 devlink->ops->trap_policer_fini(devlink, policer);
10386 kfree(policer_item);
10390 * devlink_trap_policers_register - Register packet trap policers with devlink.
10391 * @devlink: devlink.
10392 * @policers: Packet trap policers.
10393 * @policers_count: Count of provided packet trap policers.
10395 * Return: Non-zero value on failure.
10398 devlink_trap_policers_register(struct devlink *devlink,
10399 const struct devlink_trap_policer *policers,
10400 size_t policers_count)
10404 mutex_lock(&devlink->lock);
10405 for (i = 0; i < policers_count; i++) {
10406 const struct devlink_trap_policer *policer = &policers[i];
10408 if (WARN_ON(policer->id == 0 ||
10409 policer->max_rate < policer->min_rate ||
10410 policer->max_burst < policer->min_burst)) {
10412 goto err_trap_policer_verify;
10415 err = devlink_trap_policer_register(devlink, policer);
10417 goto err_trap_policer_register;
10419 mutex_unlock(&devlink->lock);
10423 err_trap_policer_register:
10424 err_trap_policer_verify:
10425 for (i--; i >= 0; i--)
10426 devlink_trap_policer_unregister(devlink, &policers[i]);
10427 mutex_unlock(&devlink->lock);
10430 EXPORT_SYMBOL_GPL(devlink_trap_policers_register);
10433 * devlink_trap_policers_unregister - Unregister packet trap policers from devlink.
10434 * @devlink: devlink.
10435 * @policers: Packet trap policers.
10436 * @policers_count: Count of provided packet trap policers.
10439 devlink_trap_policers_unregister(struct devlink *devlink,
10440 const struct devlink_trap_policer *policers,
10441 size_t policers_count)
10445 mutex_lock(&devlink->lock);
10446 for (i = policers_count - 1; i >= 0; i--)
10447 devlink_trap_policer_unregister(devlink, &policers[i]);
10448 mutex_unlock(&devlink->lock);
10450 EXPORT_SYMBOL_GPL(devlink_trap_policers_unregister);
10452 static void __devlink_compat_running_version(struct devlink *devlink,
10453 char *buf, size_t len)
10455 const struct nlattr *nlattr;
10456 struct devlink_info_req req;
10457 struct sk_buff *msg;
10460 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10465 err = devlink->ops->info_get(devlink, &req, NULL);
10469 nla_for_each_attr(nlattr, (void *)msg->data, msg->len, rem) {
10470 const struct nlattr *kv;
10473 if (nla_type(nlattr) != DEVLINK_ATTR_INFO_VERSION_RUNNING)
10476 nla_for_each_nested(kv, nlattr, rem_kv) {
10477 if (nla_type(kv) != DEVLINK_ATTR_INFO_VERSION_VALUE)
10480 strlcat(buf, nla_data(kv), len);
10481 strlcat(buf, " ", len);
10488 void devlink_compat_running_version(struct net_device *dev,
10489 char *buf, size_t len)
10491 struct devlink *devlink;
10496 devlink = netdev_to_devlink(dev);
10497 if (!devlink || !devlink->ops->info_get)
10500 mutex_lock(&devlink->lock);
10501 __devlink_compat_running_version(devlink, buf, len);
10502 mutex_unlock(&devlink->lock);
10509 int devlink_compat_flash_update(struct net_device *dev, const char *file_name)
10511 struct devlink_flash_update_params params = {};
10512 struct devlink *devlink;
10518 devlink = netdev_to_devlink(dev);
10519 if (!devlink || !devlink->ops->flash_update) {
10524 ret = request_firmware(¶ms.fw, file_name, devlink->dev);
10528 mutex_lock(&devlink->lock);
10529 devlink_flash_update_begin_notify(devlink);
10530 ret = devlink->ops->flash_update(devlink, ¶ms, NULL);
10531 devlink_flash_update_end_notify(devlink);
10532 mutex_unlock(&devlink->lock);
10534 release_firmware(params.fw);
10543 int devlink_compat_phys_port_name_get(struct net_device *dev,
10544 char *name, size_t len)
10546 struct devlink_port *devlink_port;
10548 /* RTNL mutex is held here which ensures that devlink_port
10549 * instance cannot disappear in the middle. No need to take
10550 * any devlink lock as only permanent values are accessed.
10554 devlink_port = netdev_to_devlink_port(dev);
10556 return -EOPNOTSUPP;
10558 return __devlink_port_phys_port_name_get(devlink_port, name, len);
10561 int devlink_compat_switch_id_get(struct net_device *dev,
10562 struct netdev_phys_item_id *ppid)
10564 struct devlink_port *devlink_port;
10566 /* Caller must hold RTNL mutex or reference to dev, which ensures that
10567 * devlink_port instance cannot disappear in the middle. No need to take
10568 * any devlink lock as only permanent values are accessed.
10570 devlink_port = netdev_to_devlink_port(dev);
10571 if (!devlink_port || !devlink_port->switch_port)
10572 return -EOPNOTSUPP;
10574 memcpy(ppid, &devlink_port->attrs.switch_id, sizeof(*ppid));
10579 static void __net_exit devlink_pernet_pre_exit(struct net *net)
10581 struct devlink *devlink;
10582 u32 actions_performed;
10585 /* In case network namespace is getting destroyed, reload
10586 * all devlink instances from this namespace into init_net.
10588 mutex_lock(&devlink_mutex);
10589 list_for_each_entry(devlink, &devlink_list, list) {
10590 if (net_eq(devlink_net(devlink), net)) {
10591 if (WARN_ON(!devlink_reload_supported(devlink->ops)))
10593 err = devlink_reload(devlink, &init_net,
10594 DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
10595 DEVLINK_RELOAD_LIMIT_UNSPEC,
10596 &actions_performed, NULL);
10597 if (err && err != -EOPNOTSUPP)
10598 pr_warn("Failed to reload devlink instance into init_net\n");
10601 mutex_unlock(&devlink_mutex);
10604 static struct pernet_operations devlink_pernet_ops __net_initdata = {
10605 .pre_exit = devlink_pernet_pre_exit,
10608 static int __init devlink_init(void)
10612 err = genl_register_family(&devlink_nl_family);
10615 err = register_pernet_subsys(&devlink_pernet_ops);
10622 subsys_initcall(devlink_init);