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 case DEVLINK_PORT_FLAVOUR_VIRTUAL:
709 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_NUMBER,
710 attrs->phys.port_number))
714 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_GROUP,
715 attrs->phys.port_number))
717 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_SUBPORT_NUMBER,
718 attrs->phys.split_subport_number))
728 devlink_port_fn_hw_addr_fill(struct devlink *devlink, const struct devlink_ops *ops,
729 struct devlink_port *port, struct sk_buff *msg,
730 struct netlink_ext_ack *extack, bool *msg_updated)
732 u8 hw_addr[MAX_ADDR_LEN];
736 if (!ops->port_function_hw_addr_get)
739 err = ops->port_function_hw_addr_get(devlink, port, hw_addr, &hw_addr_len, extack);
741 if (err == -EOPNOTSUPP)
745 err = nla_put(msg, DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR, hw_addr_len, hw_addr);
753 devlink_port_fn_state_valid(enum devlink_port_fn_state state)
755 return state == DEVLINK_PORT_FN_STATE_INACTIVE ||
756 state == DEVLINK_PORT_FN_STATE_ACTIVE;
760 devlink_port_fn_opstate_valid(enum devlink_port_fn_opstate opstate)
762 return opstate == DEVLINK_PORT_FN_OPSTATE_DETACHED ||
763 opstate == DEVLINK_PORT_FN_OPSTATE_ATTACHED;
767 devlink_port_fn_state_fill(struct devlink *devlink,
768 const struct devlink_ops *ops,
769 struct devlink_port *port, struct sk_buff *msg,
770 struct netlink_ext_ack *extack,
773 enum devlink_port_fn_opstate opstate;
774 enum devlink_port_fn_state state;
777 if (!ops->port_fn_state_get)
780 err = ops->port_fn_state_get(devlink, port, &state, &opstate, extack);
782 if (err == -EOPNOTSUPP)
786 if (!devlink_port_fn_state_valid(state)) {
788 NL_SET_ERR_MSG_MOD(extack, "Invalid state read from driver");
791 if (!devlink_port_fn_opstate_valid(opstate)) {
793 NL_SET_ERR_MSG_MOD(extack,
794 "Invalid operational state read from driver");
797 if (nla_put_u8(msg, DEVLINK_PORT_FN_ATTR_STATE, state) ||
798 nla_put_u8(msg, DEVLINK_PORT_FN_ATTR_OPSTATE, opstate))
805 devlink_nl_port_function_attrs_put(struct sk_buff *msg, struct devlink_port *port,
806 struct netlink_ext_ack *extack)
808 struct devlink *devlink = port->devlink;
809 const struct devlink_ops *ops;
810 struct nlattr *function_attr;
811 bool msg_updated = false;
814 function_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PORT_FUNCTION);
819 err = devlink_port_fn_hw_addr_fill(devlink, ops, port, msg,
820 extack, &msg_updated);
823 err = devlink_port_fn_state_fill(devlink, ops, port, msg, extack,
826 if (err || !msg_updated)
827 nla_nest_cancel(msg, function_attr);
829 nla_nest_end(msg, function_attr);
833 static int devlink_nl_port_fill(struct sk_buff *msg, struct devlink *devlink,
834 struct devlink_port *devlink_port,
835 enum devlink_command cmd, u32 portid,
837 struct netlink_ext_ack *extack)
841 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
845 if (devlink_nl_put_handle(msg, devlink))
846 goto nla_put_failure;
847 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
848 goto nla_put_failure;
850 /* Hold rtnl lock while accessing port's netdev attributes. */
852 spin_lock_bh(&devlink_port->type_lock);
853 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_TYPE, devlink_port->type))
854 goto nla_put_failure_type_locked;
855 if (devlink_port->desired_type != DEVLINK_PORT_TYPE_NOTSET &&
856 nla_put_u16(msg, DEVLINK_ATTR_PORT_DESIRED_TYPE,
857 devlink_port->desired_type))
858 goto nla_put_failure_type_locked;
859 if (devlink_port->type == DEVLINK_PORT_TYPE_ETH) {
860 struct net *net = devlink_net(devlink_port->devlink);
861 struct net_device *netdev = devlink_port->type_dev;
863 if (netdev && net_eq(net, dev_net(netdev)) &&
864 (nla_put_u32(msg, DEVLINK_ATTR_PORT_NETDEV_IFINDEX,
866 nla_put_string(msg, DEVLINK_ATTR_PORT_NETDEV_NAME,
868 goto nla_put_failure_type_locked;
870 if (devlink_port->type == DEVLINK_PORT_TYPE_IB) {
871 struct ib_device *ibdev = devlink_port->type_dev;
874 nla_put_string(msg, DEVLINK_ATTR_PORT_IBDEV_NAME,
876 goto nla_put_failure_type_locked;
878 spin_unlock_bh(&devlink_port->type_lock);
880 if (devlink_nl_port_attrs_put(msg, devlink_port))
881 goto nla_put_failure;
882 if (devlink_nl_port_function_attrs_put(msg, devlink_port, extack))
883 goto nla_put_failure;
885 genlmsg_end(msg, hdr);
888 nla_put_failure_type_locked:
889 spin_unlock_bh(&devlink_port->type_lock);
892 genlmsg_cancel(msg, hdr);
896 static void devlink_port_notify(struct devlink_port *devlink_port,
897 enum devlink_command cmd)
899 struct devlink *devlink = devlink_port->devlink;
903 if (!devlink_port->registered)
906 WARN_ON(cmd != DEVLINK_CMD_PORT_NEW && cmd != DEVLINK_CMD_PORT_DEL);
908 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
912 err = devlink_nl_port_fill(msg, devlink, devlink_port, cmd, 0, 0, 0,
919 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
920 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
923 static int devlink_nl_cmd_get_doit(struct sk_buff *skb, struct genl_info *info)
925 struct devlink *devlink = info->user_ptr[0];
929 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
933 err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
934 info->snd_portid, info->snd_seq, 0);
940 return genlmsg_reply(msg, info);
943 static int devlink_nl_cmd_get_dumpit(struct sk_buff *msg,
944 struct netlink_callback *cb)
946 struct devlink *devlink;
947 int start = cb->args[0];
951 mutex_lock(&devlink_mutex);
952 list_for_each_entry(devlink, &devlink_list, list) {
953 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
959 err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
960 NETLINK_CB(cb->skb).portid,
961 cb->nlh->nlmsg_seq, NLM_F_MULTI);
967 mutex_unlock(&devlink_mutex);
973 static int devlink_nl_cmd_port_get_doit(struct sk_buff *skb,
974 struct genl_info *info)
976 struct devlink_port *devlink_port = info->user_ptr[1];
977 struct devlink *devlink = devlink_port->devlink;
981 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
985 err = devlink_nl_port_fill(msg, devlink, devlink_port,
986 DEVLINK_CMD_PORT_NEW,
987 info->snd_portid, info->snd_seq, 0,
994 return genlmsg_reply(msg, info);
997 static int devlink_nl_cmd_port_get_dumpit(struct sk_buff *msg,
998 struct netlink_callback *cb)
1000 struct devlink *devlink;
1001 struct devlink_port *devlink_port;
1002 int start = cb->args[0];
1006 mutex_lock(&devlink_mutex);
1007 list_for_each_entry(devlink, &devlink_list, list) {
1008 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
1010 mutex_lock(&devlink->lock);
1011 list_for_each_entry(devlink_port, &devlink->port_list, list) {
1016 err = devlink_nl_port_fill(msg, devlink, devlink_port,
1018 NETLINK_CB(cb->skb).portid,
1023 mutex_unlock(&devlink->lock);
1028 mutex_unlock(&devlink->lock);
1031 mutex_unlock(&devlink_mutex);
1037 static int devlink_port_type_set(struct devlink *devlink,
1038 struct devlink_port *devlink_port,
1039 enum devlink_port_type port_type)
1044 if (devlink->ops->port_type_set) {
1045 if (port_type == devlink_port->type)
1047 err = devlink->ops->port_type_set(devlink_port, port_type);
1050 devlink_port->desired_type = port_type;
1051 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
1058 devlink_port_function_hw_addr_set(struct devlink *devlink, struct devlink_port *port,
1059 const struct nlattr *attr, struct netlink_ext_ack *extack)
1061 const struct devlink_ops *ops;
1065 hw_addr = nla_data(attr);
1066 hw_addr_len = nla_len(attr);
1067 if (hw_addr_len > MAX_ADDR_LEN) {
1068 NL_SET_ERR_MSG_MOD(extack, "Port function hardware address too long");
1071 if (port->type == DEVLINK_PORT_TYPE_ETH) {
1072 if (hw_addr_len != ETH_ALEN) {
1073 NL_SET_ERR_MSG_MOD(extack, "Address must be 6 bytes for Ethernet device");
1076 if (!is_unicast_ether_addr(hw_addr)) {
1077 NL_SET_ERR_MSG_MOD(extack, "Non-unicast hardware address unsupported");
1083 if (!ops->port_function_hw_addr_set) {
1084 NL_SET_ERR_MSG_MOD(extack, "Port doesn't support function attributes");
1088 return ops->port_function_hw_addr_set(devlink, port, hw_addr, hw_addr_len, extack);
1091 static int devlink_port_fn_state_set(struct devlink *devlink,
1092 struct devlink_port *port,
1093 const struct nlattr *attr,
1094 struct netlink_ext_ack *extack)
1096 enum devlink_port_fn_state state;
1097 const struct devlink_ops *ops;
1099 state = nla_get_u8(attr);
1101 if (!ops->port_fn_state_set) {
1102 NL_SET_ERR_MSG_MOD(extack,
1103 "Function does not support state setting");
1106 return ops->port_fn_state_set(devlink, port, state, extack);
1110 devlink_port_function_set(struct devlink *devlink, struct devlink_port *port,
1111 const struct nlattr *attr, struct netlink_ext_ack *extack)
1113 struct nlattr *tb[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1];
1116 err = nla_parse_nested(tb, DEVLINK_PORT_FUNCTION_ATTR_MAX, attr,
1117 devlink_function_nl_policy, extack);
1119 NL_SET_ERR_MSG_MOD(extack, "Fail to parse port function attributes");
1123 attr = tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR];
1125 err = devlink_port_function_hw_addr_set(devlink, port, attr, extack);
1129 /* Keep this as the last function attribute set, so that when
1130 * multiple port function attributes are set along with state,
1131 * Those can be applied first before activating the state.
1133 attr = tb[DEVLINK_PORT_FN_ATTR_STATE];
1135 err = devlink_port_fn_state_set(devlink, port, attr, extack);
1138 devlink_port_notify(port, DEVLINK_CMD_PORT_NEW);
1142 static int devlink_nl_cmd_port_set_doit(struct sk_buff *skb,
1143 struct genl_info *info)
1145 struct devlink_port *devlink_port = info->user_ptr[1];
1146 struct devlink *devlink = devlink_port->devlink;
1149 if (info->attrs[DEVLINK_ATTR_PORT_TYPE]) {
1150 enum devlink_port_type port_type;
1152 port_type = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_TYPE]);
1153 err = devlink_port_type_set(devlink, devlink_port, port_type);
1158 if (info->attrs[DEVLINK_ATTR_PORT_FUNCTION]) {
1159 struct nlattr *attr = info->attrs[DEVLINK_ATTR_PORT_FUNCTION];
1160 struct netlink_ext_ack *extack = info->extack;
1162 err = devlink_port_function_set(devlink, devlink_port, attr, extack);
1170 static int devlink_port_split(struct devlink *devlink, u32 port_index,
1171 u32 count, struct netlink_ext_ack *extack)
1174 if (devlink->ops->port_split)
1175 return devlink->ops->port_split(devlink, port_index, count,
1180 static int devlink_nl_cmd_port_split_doit(struct sk_buff *skb,
1181 struct genl_info *info)
1183 struct devlink *devlink = info->user_ptr[0];
1184 struct devlink_port *devlink_port;
1188 if (!info->attrs[DEVLINK_ATTR_PORT_INDEX] ||
1189 !info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT])
1192 devlink_port = devlink_port_get_from_info(devlink, info);
1193 port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
1194 count = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT]);
1196 if (IS_ERR(devlink_port))
1199 if (!devlink_port->attrs.splittable) {
1200 /* Split ports cannot be split. */
1201 if (devlink_port->attrs.split)
1202 NL_SET_ERR_MSG_MOD(info->extack, "Port cannot be split further");
1204 NL_SET_ERR_MSG_MOD(info->extack, "Port cannot be split");
1208 if (count < 2 || !is_power_of_2(count) || count > devlink_port->attrs.lanes) {
1209 NL_SET_ERR_MSG_MOD(info->extack, "Invalid split count");
1213 return devlink_port_split(devlink, port_index, count, info->extack);
1216 static int devlink_port_unsplit(struct devlink *devlink, u32 port_index,
1217 struct netlink_ext_ack *extack)
1220 if (devlink->ops->port_unsplit)
1221 return devlink->ops->port_unsplit(devlink, port_index, extack);
1225 static int devlink_nl_cmd_port_unsplit_doit(struct sk_buff *skb,
1226 struct genl_info *info)
1228 struct devlink *devlink = info->user_ptr[0];
1231 if (!info->attrs[DEVLINK_ATTR_PORT_INDEX])
1234 port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
1235 return devlink_port_unsplit(devlink, port_index, info->extack);
1238 static int devlink_port_new_notifiy(struct devlink *devlink,
1239 unsigned int port_index,
1240 struct genl_info *info)
1242 struct devlink_port *devlink_port;
1243 struct sk_buff *msg;
1246 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1250 mutex_lock(&devlink->lock);
1251 devlink_port = devlink_port_get_by_index(devlink, port_index);
1252 if (!devlink_port) {
1257 err = devlink_nl_port_fill(msg, devlink, devlink_port,
1258 DEVLINK_CMD_NEW, info->snd_portid,
1259 info->snd_seq, 0, NULL);
1263 err = genlmsg_reply(msg, info);
1264 mutex_unlock(&devlink->lock);
1268 mutex_unlock(&devlink->lock);
1273 static int devlink_nl_cmd_port_new_doit(struct sk_buff *skb,
1274 struct genl_info *info)
1276 struct netlink_ext_ack *extack = info->extack;
1277 struct devlink_port_new_attrs new_attrs = {};
1278 struct devlink *devlink = info->user_ptr[0];
1279 unsigned int new_port_index;
1282 if (!devlink->ops->port_new || !devlink->ops->port_del)
1285 if (!info->attrs[DEVLINK_ATTR_PORT_FLAVOUR] ||
1286 !info->attrs[DEVLINK_ATTR_PORT_PCI_PF_NUMBER]) {
1287 NL_SET_ERR_MSG_MOD(extack, "Port flavour or PCI PF are not specified");
1290 new_attrs.flavour = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_FLAVOUR]);
1292 nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_PCI_PF_NUMBER]);
1294 if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
1295 /* Port index of the new port being created by driver. */
1296 new_attrs.port_index =
1297 nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
1298 new_attrs.port_index_valid = true;
1300 if (info->attrs[DEVLINK_ATTR_PORT_CONTROLLER_NUMBER]) {
1301 new_attrs.controller =
1302 nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_CONTROLLER_NUMBER]);
1303 new_attrs.controller_valid = true;
1305 if (new_attrs.flavour == DEVLINK_PORT_FLAVOUR_PCI_SF &&
1306 info->attrs[DEVLINK_ATTR_PORT_PCI_SF_NUMBER]) {
1307 new_attrs.sfnum = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_PCI_SF_NUMBER]);
1308 new_attrs.sfnum_valid = true;
1311 err = devlink->ops->port_new(devlink, &new_attrs, extack,
1316 err = devlink_port_new_notifiy(devlink, new_port_index, info);
1317 if (err && err != -ENODEV) {
1318 /* Fail to send the response; destroy newly created port. */
1319 devlink->ops->port_del(devlink, new_port_index, extack);
1324 static int devlink_nl_cmd_port_del_doit(struct sk_buff *skb,
1325 struct genl_info *info)
1327 struct netlink_ext_ack *extack = info->extack;
1328 struct devlink *devlink = info->user_ptr[0];
1329 unsigned int port_index;
1331 if (!devlink->ops->port_del)
1334 if (!info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
1335 NL_SET_ERR_MSG_MOD(extack, "Port index is not specified");
1338 port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
1340 return devlink->ops->port_del(devlink, port_index, extack);
1343 static int devlink_nl_sb_fill(struct sk_buff *msg, struct devlink *devlink,
1344 struct devlink_sb *devlink_sb,
1345 enum devlink_command cmd, u32 portid,
1350 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1354 if (devlink_nl_put_handle(msg, devlink))
1355 goto nla_put_failure;
1356 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
1357 goto nla_put_failure;
1358 if (nla_put_u32(msg, DEVLINK_ATTR_SB_SIZE, devlink_sb->size))
1359 goto nla_put_failure;
1360 if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_POOL_COUNT,
1361 devlink_sb->ingress_pools_count))
1362 goto nla_put_failure;
1363 if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_POOL_COUNT,
1364 devlink_sb->egress_pools_count))
1365 goto nla_put_failure;
1366 if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_TC_COUNT,
1367 devlink_sb->ingress_tc_count))
1368 goto nla_put_failure;
1369 if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_TC_COUNT,
1370 devlink_sb->egress_tc_count))
1371 goto nla_put_failure;
1373 genlmsg_end(msg, hdr);
1377 genlmsg_cancel(msg, hdr);
1381 static int devlink_nl_cmd_sb_get_doit(struct sk_buff *skb,
1382 struct genl_info *info)
1384 struct devlink *devlink = info->user_ptr[0];
1385 struct devlink_sb *devlink_sb;
1386 struct sk_buff *msg;
1389 devlink_sb = devlink_sb_get_from_info(devlink, info);
1390 if (IS_ERR(devlink_sb))
1391 return PTR_ERR(devlink_sb);
1393 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1397 err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
1399 info->snd_portid, info->snd_seq, 0);
1405 return genlmsg_reply(msg, info);
1408 static int devlink_nl_cmd_sb_get_dumpit(struct sk_buff *msg,
1409 struct netlink_callback *cb)
1411 struct devlink *devlink;
1412 struct devlink_sb *devlink_sb;
1413 int start = cb->args[0];
1417 mutex_lock(&devlink_mutex);
1418 list_for_each_entry(devlink, &devlink_list, list) {
1419 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
1421 mutex_lock(&devlink->lock);
1422 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
1427 err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
1429 NETLINK_CB(cb->skb).portid,
1433 mutex_unlock(&devlink->lock);
1438 mutex_unlock(&devlink->lock);
1441 mutex_unlock(&devlink_mutex);
1447 static int devlink_nl_sb_pool_fill(struct sk_buff *msg, struct devlink *devlink,
1448 struct devlink_sb *devlink_sb,
1449 u16 pool_index, enum devlink_command cmd,
1450 u32 portid, u32 seq, int flags)
1452 struct devlink_sb_pool_info pool_info;
1456 err = devlink->ops->sb_pool_get(devlink, devlink_sb->index,
1457 pool_index, &pool_info);
1461 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1465 if (devlink_nl_put_handle(msg, devlink))
1466 goto nla_put_failure;
1467 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
1468 goto nla_put_failure;
1469 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
1470 goto nla_put_failure;
1471 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_info.pool_type))
1472 goto nla_put_failure;
1473 if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_SIZE, pool_info.size))
1474 goto nla_put_failure;
1475 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE,
1476 pool_info.threshold_type))
1477 goto nla_put_failure;
1478 if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_CELL_SIZE,
1479 pool_info.cell_size))
1480 goto nla_put_failure;
1482 genlmsg_end(msg, hdr);
1486 genlmsg_cancel(msg, hdr);
1490 static int devlink_nl_cmd_sb_pool_get_doit(struct sk_buff *skb,
1491 struct genl_info *info)
1493 struct devlink *devlink = info->user_ptr[0];
1494 struct devlink_sb *devlink_sb;
1495 struct sk_buff *msg;
1499 devlink_sb = devlink_sb_get_from_info(devlink, info);
1500 if (IS_ERR(devlink_sb))
1501 return PTR_ERR(devlink_sb);
1503 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1508 if (!devlink->ops->sb_pool_get)
1511 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1515 err = devlink_nl_sb_pool_fill(msg, devlink, devlink_sb, pool_index,
1516 DEVLINK_CMD_SB_POOL_NEW,
1517 info->snd_portid, info->snd_seq, 0);
1523 return genlmsg_reply(msg, info);
1526 static int __sb_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
1527 struct devlink *devlink,
1528 struct devlink_sb *devlink_sb,
1529 u32 portid, u32 seq)
1531 u16 pool_count = devlink_sb_pool_count(devlink_sb);
1535 for (pool_index = 0; pool_index < pool_count; pool_index++) {
1536 if (*p_idx < start) {
1540 err = devlink_nl_sb_pool_fill(msg, devlink,
1543 DEVLINK_CMD_SB_POOL_NEW,
1544 portid, seq, NLM_F_MULTI);
1552 static int devlink_nl_cmd_sb_pool_get_dumpit(struct sk_buff *msg,
1553 struct netlink_callback *cb)
1555 struct devlink *devlink;
1556 struct devlink_sb *devlink_sb;
1557 int start = cb->args[0];
1561 mutex_lock(&devlink_mutex);
1562 list_for_each_entry(devlink, &devlink_list, list) {
1563 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
1564 !devlink->ops->sb_pool_get)
1566 mutex_lock(&devlink->lock);
1567 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
1568 err = __sb_pool_get_dumpit(msg, start, &idx, devlink,
1570 NETLINK_CB(cb->skb).portid,
1571 cb->nlh->nlmsg_seq);
1572 if (err == -EOPNOTSUPP) {
1575 mutex_unlock(&devlink->lock);
1579 mutex_unlock(&devlink->lock);
1582 mutex_unlock(&devlink_mutex);
1584 if (err != -EMSGSIZE)
1591 static int devlink_sb_pool_set(struct devlink *devlink, unsigned int sb_index,
1592 u16 pool_index, u32 size,
1593 enum devlink_sb_threshold_type threshold_type,
1594 struct netlink_ext_ack *extack)
1597 const struct devlink_ops *ops = devlink->ops;
1599 if (ops->sb_pool_set)
1600 return ops->sb_pool_set(devlink, sb_index, pool_index,
1601 size, threshold_type, extack);
1605 static int devlink_nl_cmd_sb_pool_set_doit(struct sk_buff *skb,
1606 struct genl_info *info)
1608 struct devlink *devlink = info->user_ptr[0];
1609 enum devlink_sb_threshold_type threshold_type;
1610 struct devlink_sb *devlink_sb;
1615 devlink_sb = devlink_sb_get_from_info(devlink, info);
1616 if (IS_ERR(devlink_sb))
1617 return PTR_ERR(devlink_sb);
1619 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1624 err = devlink_sb_th_type_get_from_info(info, &threshold_type);
1628 if (!info->attrs[DEVLINK_ATTR_SB_POOL_SIZE])
1631 size = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_POOL_SIZE]);
1632 return devlink_sb_pool_set(devlink, devlink_sb->index,
1633 pool_index, size, threshold_type,
1637 static int devlink_nl_sb_port_pool_fill(struct sk_buff *msg,
1638 struct devlink *devlink,
1639 struct devlink_port *devlink_port,
1640 struct devlink_sb *devlink_sb,
1642 enum devlink_command cmd,
1643 u32 portid, u32 seq, int flags)
1645 const struct devlink_ops *ops = devlink->ops;
1650 err = ops->sb_port_pool_get(devlink_port, devlink_sb->index,
1651 pool_index, &threshold);
1655 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1659 if (devlink_nl_put_handle(msg, devlink))
1660 goto nla_put_failure;
1661 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
1662 goto nla_put_failure;
1663 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
1664 goto nla_put_failure;
1665 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
1666 goto nla_put_failure;
1667 if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
1668 goto nla_put_failure;
1670 if (ops->sb_occ_port_pool_get) {
1674 err = ops->sb_occ_port_pool_get(devlink_port, devlink_sb->index,
1675 pool_index, &cur, &max);
1676 if (err && err != -EOPNOTSUPP)
1677 goto sb_occ_get_failure;
1679 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
1680 goto nla_put_failure;
1681 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
1682 goto nla_put_failure;
1686 genlmsg_end(msg, hdr);
1692 genlmsg_cancel(msg, hdr);
1696 static int devlink_nl_cmd_sb_port_pool_get_doit(struct sk_buff *skb,
1697 struct genl_info *info)
1699 struct devlink_port *devlink_port = info->user_ptr[1];
1700 struct devlink *devlink = devlink_port->devlink;
1701 struct devlink_sb *devlink_sb;
1702 struct sk_buff *msg;
1706 devlink_sb = devlink_sb_get_from_info(devlink, info);
1707 if (IS_ERR(devlink_sb))
1708 return PTR_ERR(devlink_sb);
1710 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1715 if (!devlink->ops->sb_port_pool_get)
1718 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1722 err = devlink_nl_sb_port_pool_fill(msg, devlink, devlink_port,
1723 devlink_sb, pool_index,
1724 DEVLINK_CMD_SB_PORT_POOL_NEW,
1725 info->snd_portid, info->snd_seq, 0);
1731 return genlmsg_reply(msg, info);
1734 static int __sb_port_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
1735 struct devlink *devlink,
1736 struct devlink_sb *devlink_sb,
1737 u32 portid, u32 seq)
1739 struct devlink_port *devlink_port;
1740 u16 pool_count = devlink_sb_pool_count(devlink_sb);
1744 list_for_each_entry(devlink_port, &devlink->port_list, list) {
1745 for (pool_index = 0; pool_index < pool_count; pool_index++) {
1746 if (*p_idx < start) {
1750 err = devlink_nl_sb_port_pool_fill(msg, devlink,
1754 DEVLINK_CMD_SB_PORT_POOL_NEW,
1765 static int devlink_nl_cmd_sb_port_pool_get_dumpit(struct sk_buff *msg,
1766 struct netlink_callback *cb)
1768 struct devlink *devlink;
1769 struct devlink_sb *devlink_sb;
1770 int start = cb->args[0];
1774 mutex_lock(&devlink_mutex);
1775 list_for_each_entry(devlink, &devlink_list, list) {
1776 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
1777 !devlink->ops->sb_port_pool_get)
1779 mutex_lock(&devlink->lock);
1780 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
1781 err = __sb_port_pool_get_dumpit(msg, start, &idx,
1782 devlink, devlink_sb,
1783 NETLINK_CB(cb->skb).portid,
1784 cb->nlh->nlmsg_seq);
1785 if (err == -EOPNOTSUPP) {
1788 mutex_unlock(&devlink->lock);
1792 mutex_unlock(&devlink->lock);
1795 mutex_unlock(&devlink_mutex);
1797 if (err != -EMSGSIZE)
1804 static int devlink_sb_port_pool_set(struct devlink_port *devlink_port,
1805 unsigned int sb_index, u16 pool_index,
1807 struct netlink_ext_ack *extack)
1810 const struct devlink_ops *ops = devlink_port->devlink->ops;
1812 if (ops->sb_port_pool_set)
1813 return ops->sb_port_pool_set(devlink_port, sb_index,
1814 pool_index, threshold, extack);
1818 static int devlink_nl_cmd_sb_port_pool_set_doit(struct sk_buff *skb,
1819 struct genl_info *info)
1821 struct devlink_port *devlink_port = info->user_ptr[1];
1822 struct devlink *devlink = info->user_ptr[0];
1823 struct devlink_sb *devlink_sb;
1828 devlink_sb = devlink_sb_get_from_info(devlink, info);
1829 if (IS_ERR(devlink_sb))
1830 return PTR_ERR(devlink_sb);
1832 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1837 if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD])
1840 threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
1841 return devlink_sb_port_pool_set(devlink_port, devlink_sb->index,
1842 pool_index, threshold, info->extack);
1846 devlink_nl_sb_tc_pool_bind_fill(struct sk_buff *msg, struct devlink *devlink,
1847 struct devlink_port *devlink_port,
1848 struct devlink_sb *devlink_sb, u16 tc_index,
1849 enum devlink_sb_pool_type pool_type,
1850 enum devlink_command cmd,
1851 u32 portid, u32 seq, int flags)
1853 const struct devlink_ops *ops = devlink->ops;
1859 err = ops->sb_tc_pool_bind_get(devlink_port, devlink_sb->index,
1860 tc_index, pool_type,
1861 &pool_index, &threshold);
1865 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1869 if (devlink_nl_put_handle(msg, devlink))
1870 goto nla_put_failure;
1871 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
1872 goto nla_put_failure;
1873 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
1874 goto nla_put_failure;
1875 if (nla_put_u16(msg, DEVLINK_ATTR_SB_TC_INDEX, tc_index))
1876 goto nla_put_failure;
1877 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_type))
1878 goto nla_put_failure;
1879 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
1880 goto nla_put_failure;
1881 if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
1882 goto nla_put_failure;
1884 if (ops->sb_occ_tc_port_bind_get) {
1888 err = ops->sb_occ_tc_port_bind_get(devlink_port,
1890 tc_index, pool_type,
1892 if (err && err != -EOPNOTSUPP)
1895 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
1896 goto nla_put_failure;
1897 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
1898 goto nla_put_failure;
1902 genlmsg_end(msg, hdr);
1906 genlmsg_cancel(msg, hdr);
1910 static int devlink_nl_cmd_sb_tc_pool_bind_get_doit(struct sk_buff *skb,
1911 struct genl_info *info)
1913 struct devlink_port *devlink_port = info->user_ptr[1];
1914 struct devlink *devlink = devlink_port->devlink;
1915 struct devlink_sb *devlink_sb;
1916 struct sk_buff *msg;
1917 enum devlink_sb_pool_type pool_type;
1921 devlink_sb = devlink_sb_get_from_info(devlink, info);
1922 if (IS_ERR(devlink_sb))
1923 return PTR_ERR(devlink_sb);
1925 err = devlink_sb_pool_type_get_from_info(info, &pool_type);
1929 err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
1930 pool_type, &tc_index);
1934 if (!devlink->ops->sb_tc_pool_bind_get)
1937 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1941 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink, devlink_port,
1942 devlink_sb, tc_index, pool_type,
1943 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
1951 return genlmsg_reply(msg, info);
1954 static int __sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
1955 int start, int *p_idx,
1956 struct devlink *devlink,
1957 struct devlink_sb *devlink_sb,
1958 u32 portid, u32 seq)
1960 struct devlink_port *devlink_port;
1964 list_for_each_entry(devlink_port, &devlink->port_list, list) {
1966 tc_index < devlink_sb->ingress_tc_count; tc_index++) {
1967 if (*p_idx < start) {
1971 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
1975 DEVLINK_SB_POOL_TYPE_INGRESS,
1976 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
1984 tc_index < devlink_sb->egress_tc_count; tc_index++) {
1985 if (*p_idx < start) {
1989 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
1993 DEVLINK_SB_POOL_TYPE_EGRESS,
1994 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
2006 devlink_nl_cmd_sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
2007 struct netlink_callback *cb)
2009 struct devlink *devlink;
2010 struct devlink_sb *devlink_sb;
2011 int start = cb->args[0];
2015 mutex_lock(&devlink_mutex);
2016 list_for_each_entry(devlink, &devlink_list, list) {
2017 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
2018 !devlink->ops->sb_tc_pool_bind_get)
2021 mutex_lock(&devlink->lock);
2022 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
2023 err = __sb_tc_pool_bind_get_dumpit(msg, start, &idx,
2026 NETLINK_CB(cb->skb).portid,
2027 cb->nlh->nlmsg_seq);
2028 if (err == -EOPNOTSUPP) {
2031 mutex_unlock(&devlink->lock);
2035 mutex_unlock(&devlink->lock);
2038 mutex_unlock(&devlink_mutex);
2040 if (err != -EMSGSIZE)
2047 static int devlink_sb_tc_pool_bind_set(struct devlink_port *devlink_port,
2048 unsigned int sb_index, u16 tc_index,
2049 enum devlink_sb_pool_type pool_type,
2050 u16 pool_index, u32 threshold,
2051 struct netlink_ext_ack *extack)
2054 const struct devlink_ops *ops = devlink_port->devlink->ops;
2056 if (ops->sb_tc_pool_bind_set)
2057 return ops->sb_tc_pool_bind_set(devlink_port, sb_index,
2058 tc_index, pool_type,
2059 pool_index, threshold, extack);
2063 static int devlink_nl_cmd_sb_tc_pool_bind_set_doit(struct sk_buff *skb,
2064 struct genl_info *info)
2066 struct devlink_port *devlink_port = info->user_ptr[1];
2067 struct devlink *devlink = info->user_ptr[0];
2068 enum devlink_sb_pool_type pool_type;
2069 struct devlink_sb *devlink_sb;
2075 devlink_sb = devlink_sb_get_from_info(devlink, info);
2076 if (IS_ERR(devlink_sb))
2077 return PTR_ERR(devlink_sb);
2079 err = devlink_sb_pool_type_get_from_info(info, &pool_type);
2083 err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
2084 pool_type, &tc_index);
2088 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
2093 if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD])
2096 threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
2097 return devlink_sb_tc_pool_bind_set(devlink_port, devlink_sb->index,
2098 tc_index, pool_type,
2099 pool_index, threshold, info->extack);
2102 static int devlink_nl_cmd_sb_occ_snapshot_doit(struct sk_buff *skb,
2103 struct genl_info *info)
2105 struct devlink *devlink = info->user_ptr[0];
2106 const struct devlink_ops *ops = devlink->ops;
2107 struct devlink_sb *devlink_sb;
2109 devlink_sb = devlink_sb_get_from_info(devlink, info);
2110 if (IS_ERR(devlink_sb))
2111 return PTR_ERR(devlink_sb);
2113 if (ops->sb_occ_snapshot)
2114 return ops->sb_occ_snapshot(devlink, devlink_sb->index);
2118 static int devlink_nl_cmd_sb_occ_max_clear_doit(struct sk_buff *skb,
2119 struct genl_info *info)
2121 struct devlink *devlink = info->user_ptr[0];
2122 const struct devlink_ops *ops = devlink->ops;
2123 struct devlink_sb *devlink_sb;
2125 devlink_sb = devlink_sb_get_from_info(devlink, info);
2126 if (IS_ERR(devlink_sb))
2127 return PTR_ERR(devlink_sb);
2129 if (ops->sb_occ_max_clear)
2130 return ops->sb_occ_max_clear(devlink, devlink_sb->index);
2134 static int devlink_nl_eswitch_fill(struct sk_buff *msg, struct devlink *devlink,
2135 enum devlink_command cmd, u32 portid,
2138 const struct devlink_ops *ops = devlink->ops;
2139 enum devlink_eswitch_encap_mode encap_mode;
2145 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
2149 err = devlink_nl_put_handle(msg, devlink);
2151 goto nla_put_failure;
2153 if (ops->eswitch_mode_get) {
2154 err = ops->eswitch_mode_get(devlink, &mode);
2156 goto nla_put_failure;
2157 err = nla_put_u16(msg, DEVLINK_ATTR_ESWITCH_MODE, mode);
2159 goto nla_put_failure;
2162 if (ops->eswitch_inline_mode_get) {
2163 err = ops->eswitch_inline_mode_get(devlink, &inline_mode);
2165 goto nla_put_failure;
2166 err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_INLINE_MODE,
2169 goto nla_put_failure;
2172 if (ops->eswitch_encap_mode_get) {
2173 err = ops->eswitch_encap_mode_get(devlink, &encap_mode);
2175 goto nla_put_failure;
2176 err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_ENCAP_MODE, encap_mode);
2178 goto nla_put_failure;
2181 genlmsg_end(msg, hdr);
2185 genlmsg_cancel(msg, hdr);
2189 static int devlink_nl_cmd_eswitch_get_doit(struct sk_buff *skb,
2190 struct genl_info *info)
2192 struct devlink *devlink = info->user_ptr[0];
2193 struct sk_buff *msg;
2196 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2200 err = devlink_nl_eswitch_fill(msg, devlink, DEVLINK_CMD_ESWITCH_GET,
2201 info->snd_portid, info->snd_seq, 0);
2208 return genlmsg_reply(msg, info);
2211 static int devlink_nl_cmd_eswitch_set_doit(struct sk_buff *skb,
2212 struct genl_info *info)
2214 struct devlink *devlink = info->user_ptr[0];
2215 const struct devlink_ops *ops = devlink->ops;
2216 enum devlink_eswitch_encap_mode encap_mode;
2221 if (info->attrs[DEVLINK_ATTR_ESWITCH_MODE]) {
2222 if (!ops->eswitch_mode_set)
2224 mode = nla_get_u16(info->attrs[DEVLINK_ATTR_ESWITCH_MODE]);
2225 err = ops->eswitch_mode_set(devlink, mode, info->extack);
2230 if (info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]) {
2231 if (!ops->eswitch_inline_mode_set)
2233 inline_mode = nla_get_u8(
2234 info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]);
2235 err = ops->eswitch_inline_mode_set(devlink, inline_mode,
2241 if (info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]) {
2242 if (!ops->eswitch_encap_mode_set)
2244 encap_mode = nla_get_u8(info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]);
2245 err = ops->eswitch_encap_mode_set(devlink, encap_mode,
2254 int devlink_dpipe_match_put(struct sk_buff *skb,
2255 struct devlink_dpipe_match *match)
2257 struct devlink_dpipe_header *header = match->header;
2258 struct devlink_dpipe_field *field = &header->fields[match->field_id];
2259 struct nlattr *match_attr;
2261 match_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_MATCH);
2265 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_MATCH_TYPE, match->type) ||
2266 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, match->header_index) ||
2267 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
2268 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
2269 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
2270 goto nla_put_failure;
2272 nla_nest_end(skb, match_attr);
2276 nla_nest_cancel(skb, match_attr);
2279 EXPORT_SYMBOL_GPL(devlink_dpipe_match_put);
2281 static int devlink_dpipe_matches_put(struct devlink_dpipe_table *table,
2282 struct sk_buff *skb)
2284 struct nlattr *matches_attr;
2286 matches_attr = nla_nest_start_noflag(skb,
2287 DEVLINK_ATTR_DPIPE_TABLE_MATCHES);
2291 if (table->table_ops->matches_dump(table->priv, skb))
2292 goto nla_put_failure;
2294 nla_nest_end(skb, matches_attr);
2298 nla_nest_cancel(skb, matches_attr);
2302 int devlink_dpipe_action_put(struct sk_buff *skb,
2303 struct devlink_dpipe_action *action)
2305 struct devlink_dpipe_header *header = action->header;
2306 struct devlink_dpipe_field *field = &header->fields[action->field_id];
2307 struct nlattr *action_attr;
2309 action_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ACTION);
2313 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_ACTION_TYPE, action->type) ||
2314 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, action->header_index) ||
2315 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
2316 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
2317 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
2318 goto nla_put_failure;
2320 nla_nest_end(skb, action_attr);
2324 nla_nest_cancel(skb, action_attr);
2327 EXPORT_SYMBOL_GPL(devlink_dpipe_action_put);
2329 static int devlink_dpipe_actions_put(struct devlink_dpipe_table *table,
2330 struct sk_buff *skb)
2332 struct nlattr *actions_attr;
2334 actions_attr = nla_nest_start_noflag(skb,
2335 DEVLINK_ATTR_DPIPE_TABLE_ACTIONS);
2339 if (table->table_ops->actions_dump(table->priv, skb))
2340 goto nla_put_failure;
2342 nla_nest_end(skb, actions_attr);
2346 nla_nest_cancel(skb, actions_attr);
2350 static int devlink_dpipe_table_put(struct sk_buff *skb,
2351 struct devlink_dpipe_table *table)
2353 struct nlattr *table_attr;
2356 table_size = table->table_ops->size_get(table->priv);
2357 table_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLE);
2361 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_TABLE_NAME, table->name) ||
2362 nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_SIZE, table_size,
2364 goto nla_put_failure;
2365 if (nla_put_u8(skb, DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED,
2366 table->counters_enabled))
2367 goto nla_put_failure;
2369 if (table->resource_valid) {
2370 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_ID,
2371 table->resource_id, DEVLINK_ATTR_PAD) ||
2372 nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_UNITS,
2373 table->resource_units, DEVLINK_ATTR_PAD))
2374 goto nla_put_failure;
2376 if (devlink_dpipe_matches_put(table, skb))
2377 goto nla_put_failure;
2379 if (devlink_dpipe_actions_put(table, skb))
2380 goto nla_put_failure;
2382 nla_nest_end(skb, table_attr);
2386 nla_nest_cancel(skb, table_attr);
2390 static int devlink_dpipe_send_and_alloc_skb(struct sk_buff **pskb,
2391 struct genl_info *info)
2396 err = genlmsg_reply(*pskb, info);
2400 *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2406 static int devlink_dpipe_tables_fill(struct genl_info *info,
2407 enum devlink_command cmd, int flags,
2408 struct list_head *dpipe_tables,
2409 const char *table_name)
2411 struct devlink *devlink = info->user_ptr[0];
2412 struct devlink_dpipe_table *table;
2413 struct nlattr *tables_attr;
2414 struct sk_buff *skb = NULL;
2415 struct nlmsghdr *nlh;
2421 table = list_first_entry(dpipe_tables,
2422 struct devlink_dpipe_table, list);
2424 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2428 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
2429 &devlink_nl_family, NLM_F_MULTI, cmd);
2435 if (devlink_nl_put_handle(skb, devlink))
2436 goto nla_put_failure;
2437 tables_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLES);
2439 goto nla_put_failure;
2443 list_for_each_entry_from(table, dpipe_tables, list) {
2445 err = devlink_dpipe_table_put(skb, table);
2453 if (!strcmp(table->name, table_name)) {
2454 err = devlink_dpipe_table_put(skb, table);
2462 nla_nest_end(skb, tables_attr);
2463 genlmsg_end(skb, hdr);
2468 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
2469 NLMSG_DONE, 0, flags | NLM_F_MULTI);
2471 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2477 return genlmsg_reply(skb, info);
2486 static int devlink_nl_cmd_dpipe_table_get(struct sk_buff *skb,
2487 struct genl_info *info)
2489 struct devlink *devlink = info->user_ptr[0];
2490 const char *table_name = NULL;
2492 if (info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
2493 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
2495 return devlink_dpipe_tables_fill(info, DEVLINK_CMD_DPIPE_TABLE_GET, 0,
2496 &devlink->dpipe_table_list,
2500 static int devlink_dpipe_value_put(struct sk_buff *skb,
2501 struct devlink_dpipe_value *value)
2503 if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE,
2504 value->value_size, value->value))
2507 if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE_MASK,
2508 value->value_size, value->mask))
2510 if (value->mapping_valid)
2511 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_VALUE_MAPPING,
2512 value->mapping_value))
2517 static int devlink_dpipe_action_value_put(struct sk_buff *skb,
2518 struct devlink_dpipe_value *value)
2522 if (devlink_dpipe_action_put(skb, value->action))
2524 if (devlink_dpipe_value_put(skb, value))
2529 static int devlink_dpipe_action_values_put(struct sk_buff *skb,
2530 struct devlink_dpipe_value *values,
2531 unsigned int values_count)
2533 struct nlattr *action_attr;
2537 for (i = 0; i < values_count; i++) {
2538 action_attr = nla_nest_start_noflag(skb,
2539 DEVLINK_ATTR_DPIPE_ACTION_VALUE);
2542 err = devlink_dpipe_action_value_put(skb, &values[i]);
2544 goto err_action_value_put;
2545 nla_nest_end(skb, action_attr);
2549 err_action_value_put:
2550 nla_nest_cancel(skb, action_attr);
2554 static int devlink_dpipe_match_value_put(struct sk_buff *skb,
2555 struct devlink_dpipe_value *value)
2559 if (devlink_dpipe_match_put(skb, value->match))
2561 if (devlink_dpipe_value_put(skb, value))
2566 static int devlink_dpipe_match_values_put(struct sk_buff *skb,
2567 struct devlink_dpipe_value *values,
2568 unsigned int values_count)
2570 struct nlattr *match_attr;
2574 for (i = 0; i < values_count; i++) {
2575 match_attr = nla_nest_start_noflag(skb,
2576 DEVLINK_ATTR_DPIPE_MATCH_VALUE);
2579 err = devlink_dpipe_match_value_put(skb, &values[i]);
2581 goto err_match_value_put;
2582 nla_nest_end(skb, match_attr);
2586 err_match_value_put:
2587 nla_nest_cancel(skb, match_attr);
2591 static int devlink_dpipe_entry_put(struct sk_buff *skb,
2592 struct devlink_dpipe_entry *entry)
2594 struct nlattr *entry_attr, *matches_attr, *actions_attr;
2597 entry_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ENTRY);
2601 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_INDEX, entry->index,
2603 goto nla_put_failure;
2604 if (entry->counter_valid)
2605 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_COUNTER,
2606 entry->counter, DEVLINK_ATTR_PAD))
2607 goto nla_put_failure;
2609 matches_attr = nla_nest_start_noflag(skb,
2610 DEVLINK_ATTR_DPIPE_ENTRY_MATCH_VALUES);
2612 goto nla_put_failure;
2614 err = devlink_dpipe_match_values_put(skb, entry->match_values,
2615 entry->match_values_count);
2617 nla_nest_cancel(skb, matches_attr);
2618 goto err_match_values_put;
2620 nla_nest_end(skb, matches_attr);
2622 actions_attr = nla_nest_start_noflag(skb,
2623 DEVLINK_ATTR_DPIPE_ENTRY_ACTION_VALUES);
2625 goto nla_put_failure;
2627 err = devlink_dpipe_action_values_put(skb, entry->action_values,
2628 entry->action_values_count);
2630 nla_nest_cancel(skb, actions_attr);
2631 goto err_action_values_put;
2633 nla_nest_end(skb, actions_attr);
2635 nla_nest_end(skb, entry_attr);
2640 err_match_values_put:
2641 err_action_values_put:
2642 nla_nest_cancel(skb, entry_attr);
2646 static struct devlink_dpipe_table *
2647 devlink_dpipe_table_find(struct list_head *dpipe_tables,
2648 const char *table_name, struct devlink *devlink)
2650 struct devlink_dpipe_table *table;
2651 list_for_each_entry_rcu(table, dpipe_tables, list,
2652 lockdep_is_held(&devlink->lock)) {
2653 if (!strcmp(table->name, table_name))
2659 int devlink_dpipe_entry_ctx_prepare(struct devlink_dpipe_dump_ctx *dump_ctx)
2661 struct devlink *devlink;
2664 err = devlink_dpipe_send_and_alloc_skb(&dump_ctx->skb,
2669 dump_ctx->hdr = genlmsg_put(dump_ctx->skb,
2670 dump_ctx->info->snd_portid,
2671 dump_ctx->info->snd_seq,
2672 &devlink_nl_family, NLM_F_MULTI,
2675 goto nla_put_failure;
2677 devlink = dump_ctx->info->user_ptr[0];
2678 if (devlink_nl_put_handle(dump_ctx->skb, devlink))
2679 goto nla_put_failure;
2680 dump_ctx->nest = nla_nest_start_noflag(dump_ctx->skb,
2681 DEVLINK_ATTR_DPIPE_ENTRIES);
2682 if (!dump_ctx->nest)
2683 goto nla_put_failure;
2687 nlmsg_free(dump_ctx->skb);
2690 EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_prepare);
2692 int devlink_dpipe_entry_ctx_append(struct devlink_dpipe_dump_ctx *dump_ctx,
2693 struct devlink_dpipe_entry *entry)
2695 return devlink_dpipe_entry_put(dump_ctx->skb, entry);
2697 EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_append);
2699 int devlink_dpipe_entry_ctx_close(struct devlink_dpipe_dump_ctx *dump_ctx)
2701 nla_nest_end(dump_ctx->skb, dump_ctx->nest);
2702 genlmsg_end(dump_ctx->skb, dump_ctx->hdr);
2705 EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_close);
2707 void devlink_dpipe_entry_clear(struct devlink_dpipe_entry *entry)
2710 unsigned int value_count, value_index;
2711 struct devlink_dpipe_value *value;
2713 value = entry->action_values;
2714 value_count = entry->action_values_count;
2715 for (value_index = 0; value_index < value_count; value_index++) {
2716 kfree(value[value_index].value);
2717 kfree(value[value_index].mask);
2720 value = entry->match_values;
2721 value_count = entry->match_values_count;
2722 for (value_index = 0; value_index < value_count; value_index++) {
2723 kfree(value[value_index].value);
2724 kfree(value[value_index].mask);
2727 EXPORT_SYMBOL(devlink_dpipe_entry_clear);
2729 static int devlink_dpipe_entries_fill(struct genl_info *info,
2730 enum devlink_command cmd, int flags,
2731 struct devlink_dpipe_table *table)
2733 struct devlink_dpipe_dump_ctx dump_ctx;
2734 struct nlmsghdr *nlh;
2737 dump_ctx.skb = NULL;
2739 dump_ctx.info = info;
2741 err = table->table_ops->entries_dump(table->priv,
2742 table->counters_enabled,
2748 nlh = nlmsg_put(dump_ctx.skb, info->snd_portid, info->snd_seq,
2749 NLMSG_DONE, 0, flags | NLM_F_MULTI);
2751 err = devlink_dpipe_send_and_alloc_skb(&dump_ctx.skb, info);
2756 return genlmsg_reply(dump_ctx.skb, info);
2759 static int devlink_nl_cmd_dpipe_entries_get(struct sk_buff *skb,
2760 struct genl_info *info)
2762 struct devlink *devlink = info->user_ptr[0];
2763 struct devlink_dpipe_table *table;
2764 const char *table_name;
2766 if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
2769 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
2770 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2771 table_name, devlink);
2775 if (!table->table_ops->entries_dump)
2778 return devlink_dpipe_entries_fill(info, DEVLINK_CMD_DPIPE_ENTRIES_GET,
2782 static int devlink_dpipe_fields_put(struct sk_buff *skb,
2783 const struct devlink_dpipe_header *header)
2785 struct devlink_dpipe_field *field;
2786 struct nlattr *field_attr;
2789 for (i = 0; i < header->fields_count; i++) {
2790 field = &header->fields[i];
2791 field_attr = nla_nest_start_noflag(skb,
2792 DEVLINK_ATTR_DPIPE_FIELD);
2795 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_FIELD_NAME, field->name) ||
2796 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
2797 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_BITWIDTH, field->bitwidth) ||
2798 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_MAPPING_TYPE, field->mapping_type))
2799 goto nla_put_failure;
2800 nla_nest_end(skb, field_attr);
2805 nla_nest_cancel(skb, field_attr);
2809 static int devlink_dpipe_header_put(struct sk_buff *skb,
2810 struct devlink_dpipe_header *header)
2812 struct nlattr *fields_attr, *header_attr;
2815 header_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADER);
2819 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_HEADER_NAME, header->name) ||
2820 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
2821 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
2822 goto nla_put_failure;
2824 fields_attr = nla_nest_start_noflag(skb,
2825 DEVLINK_ATTR_DPIPE_HEADER_FIELDS);
2827 goto nla_put_failure;
2829 err = devlink_dpipe_fields_put(skb, header);
2831 nla_nest_cancel(skb, fields_attr);
2832 goto nla_put_failure;
2834 nla_nest_end(skb, fields_attr);
2835 nla_nest_end(skb, header_attr);
2840 nla_nest_cancel(skb, header_attr);
2844 static int devlink_dpipe_headers_fill(struct genl_info *info,
2845 enum devlink_command cmd, int flags,
2846 struct devlink_dpipe_headers *
2849 struct devlink *devlink = info->user_ptr[0];
2850 struct nlattr *headers_attr;
2851 struct sk_buff *skb = NULL;
2852 struct nlmsghdr *nlh;
2859 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2863 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
2864 &devlink_nl_family, NLM_F_MULTI, cmd);
2870 if (devlink_nl_put_handle(skb, devlink))
2871 goto nla_put_failure;
2872 headers_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADERS);
2874 goto nla_put_failure;
2877 for (; i < dpipe_headers->headers_count; i++) {
2878 err = devlink_dpipe_header_put(skb, dpipe_headers->headers[i]);
2886 nla_nest_end(skb, headers_attr);
2887 genlmsg_end(skb, hdr);
2888 if (i != dpipe_headers->headers_count)
2892 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
2893 NLMSG_DONE, 0, flags | NLM_F_MULTI);
2895 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2900 return genlmsg_reply(skb, info);
2909 static int devlink_nl_cmd_dpipe_headers_get(struct sk_buff *skb,
2910 struct genl_info *info)
2912 struct devlink *devlink = info->user_ptr[0];
2914 if (!devlink->dpipe_headers)
2916 return devlink_dpipe_headers_fill(info, DEVLINK_CMD_DPIPE_HEADERS_GET,
2917 0, devlink->dpipe_headers);
2920 static int devlink_dpipe_table_counters_set(struct devlink *devlink,
2921 const char *table_name,
2924 struct devlink_dpipe_table *table;
2926 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2927 table_name, devlink);
2931 if (table->counter_control_extern)
2934 if (!(table->counters_enabled ^ enable))
2937 table->counters_enabled = enable;
2938 if (table->table_ops->counters_set_update)
2939 table->table_ops->counters_set_update(table->priv, enable);
2943 static int devlink_nl_cmd_dpipe_table_counters_set(struct sk_buff *skb,
2944 struct genl_info *info)
2946 struct devlink *devlink = info->user_ptr[0];
2947 const char *table_name;
2948 bool counters_enable;
2950 if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME] ||
2951 !info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED])
2954 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
2955 counters_enable = !!nla_get_u8(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED]);
2957 return devlink_dpipe_table_counters_set(devlink, table_name,
2961 static struct devlink_resource *
2962 devlink_resource_find(struct devlink *devlink,
2963 struct devlink_resource *resource, u64 resource_id)
2965 struct list_head *resource_list;
2968 resource_list = &resource->resource_list;
2970 resource_list = &devlink->resource_list;
2972 list_for_each_entry(resource, resource_list, list) {
2973 struct devlink_resource *child_resource;
2975 if (resource->id == resource_id)
2978 child_resource = devlink_resource_find(devlink, resource,
2981 return child_resource;
2987 devlink_resource_validate_children(struct devlink_resource *resource)
2989 struct devlink_resource *child_resource;
2990 bool size_valid = true;
2993 if (list_empty(&resource->resource_list))
2996 list_for_each_entry(child_resource, &resource->resource_list, list)
2997 parts_size += child_resource->size_new;
2999 if (parts_size > resource->size_new)
3002 resource->size_valid = size_valid;
3006 devlink_resource_validate_size(struct devlink_resource *resource, u64 size,
3007 struct netlink_ext_ack *extack)
3012 if (size > resource->size_params.size_max) {
3013 NL_SET_ERR_MSG_MOD(extack, "Size larger than maximum");
3017 if (size < resource->size_params.size_min) {
3018 NL_SET_ERR_MSG_MOD(extack, "Size smaller than minimum");
3022 div64_u64_rem(size, resource->size_params.size_granularity, &reminder);
3024 NL_SET_ERR_MSG_MOD(extack, "Wrong granularity");
3031 static int devlink_nl_cmd_resource_set(struct sk_buff *skb,
3032 struct genl_info *info)
3034 struct devlink *devlink = info->user_ptr[0];
3035 struct devlink_resource *resource;
3040 if (!info->attrs[DEVLINK_ATTR_RESOURCE_ID] ||
3041 !info->attrs[DEVLINK_ATTR_RESOURCE_SIZE])
3043 resource_id = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_ID]);
3045 resource = devlink_resource_find(devlink, NULL, resource_id);
3049 size = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_SIZE]);
3050 err = devlink_resource_validate_size(resource, size, info->extack);
3054 resource->size_new = size;
3055 devlink_resource_validate_children(resource);
3056 if (resource->parent)
3057 devlink_resource_validate_children(resource->parent);
3062 devlink_resource_size_params_put(struct devlink_resource *resource,
3063 struct sk_buff *skb)
3065 struct devlink_resource_size_params *size_params;
3067 size_params = &resource->size_params;
3068 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_GRAN,
3069 size_params->size_granularity, DEVLINK_ATTR_PAD) ||
3070 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MAX,
3071 size_params->size_max, DEVLINK_ATTR_PAD) ||
3072 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MIN,
3073 size_params->size_min, DEVLINK_ATTR_PAD) ||
3074 nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_UNIT, size_params->unit))
3079 static int devlink_resource_occ_put(struct devlink_resource *resource,
3080 struct sk_buff *skb)
3082 if (!resource->occ_get)
3084 return nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_OCC,
3085 resource->occ_get(resource->occ_get_priv),
3089 static int devlink_resource_put(struct devlink *devlink, struct sk_buff *skb,
3090 struct devlink_resource *resource)
3092 struct devlink_resource *child_resource;
3093 struct nlattr *child_resource_attr;
3094 struct nlattr *resource_attr;
3096 resource_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_RESOURCE);
3100 if (nla_put_string(skb, DEVLINK_ATTR_RESOURCE_NAME, resource->name) ||
3101 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE, resource->size,
3102 DEVLINK_ATTR_PAD) ||
3103 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_ID, resource->id,
3105 goto nla_put_failure;
3106 if (resource->size != resource->size_new)
3107 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_NEW,
3108 resource->size_new, DEVLINK_ATTR_PAD);
3109 if (devlink_resource_occ_put(resource, skb))
3110 goto nla_put_failure;
3111 if (devlink_resource_size_params_put(resource, skb))
3112 goto nla_put_failure;
3113 if (list_empty(&resource->resource_list))
3116 if (nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_SIZE_VALID,
3117 resource->size_valid))
3118 goto nla_put_failure;
3120 child_resource_attr = nla_nest_start_noflag(skb,
3121 DEVLINK_ATTR_RESOURCE_LIST);
3122 if (!child_resource_attr)
3123 goto nla_put_failure;
3125 list_for_each_entry(child_resource, &resource->resource_list, list) {
3126 if (devlink_resource_put(devlink, skb, child_resource))
3127 goto resource_put_failure;
3130 nla_nest_end(skb, child_resource_attr);
3132 nla_nest_end(skb, resource_attr);
3135 resource_put_failure:
3136 nla_nest_cancel(skb, child_resource_attr);
3138 nla_nest_cancel(skb, resource_attr);
3142 static int devlink_resource_fill(struct genl_info *info,
3143 enum devlink_command cmd, int flags)
3145 struct devlink *devlink = info->user_ptr[0];
3146 struct devlink_resource *resource;
3147 struct nlattr *resources_attr;
3148 struct sk_buff *skb = NULL;
3149 struct nlmsghdr *nlh;
3155 resource = list_first_entry(&devlink->resource_list,
3156 struct devlink_resource, list);
3158 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
3162 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
3163 &devlink_nl_family, NLM_F_MULTI, cmd);
3169 if (devlink_nl_put_handle(skb, devlink))
3170 goto nla_put_failure;
3172 resources_attr = nla_nest_start_noflag(skb,
3173 DEVLINK_ATTR_RESOURCE_LIST);
3174 if (!resources_attr)
3175 goto nla_put_failure;
3179 list_for_each_entry_from(resource, &devlink->resource_list, list) {
3180 err = devlink_resource_put(devlink, skb, resource);
3183 goto err_resource_put;
3189 nla_nest_end(skb, resources_attr);
3190 genlmsg_end(skb, hdr);
3194 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
3195 NLMSG_DONE, 0, flags | NLM_F_MULTI);
3197 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
3202 return genlmsg_reply(skb, info);
3211 static int devlink_nl_cmd_resource_dump(struct sk_buff *skb,
3212 struct genl_info *info)
3214 struct devlink *devlink = info->user_ptr[0];
3216 if (list_empty(&devlink->resource_list))
3219 return devlink_resource_fill(info, DEVLINK_CMD_RESOURCE_DUMP, 0);
3223 devlink_resources_validate(struct devlink *devlink,
3224 struct devlink_resource *resource,
3225 struct genl_info *info)
3227 struct list_head *resource_list;
3231 resource_list = &resource->resource_list;
3233 resource_list = &devlink->resource_list;
3235 list_for_each_entry(resource, resource_list, list) {
3236 if (!resource->size_valid)
3238 err = devlink_resources_validate(devlink, resource, info);
3245 static struct net *devlink_netns_get(struct sk_buff *skb,
3246 struct genl_info *info)
3248 struct nlattr *netns_pid_attr = info->attrs[DEVLINK_ATTR_NETNS_PID];
3249 struct nlattr *netns_fd_attr = info->attrs[DEVLINK_ATTR_NETNS_FD];
3250 struct nlattr *netns_id_attr = info->attrs[DEVLINK_ATTR_NETNS_ID];
3253 if (!!netns_pid_attr + !!netns_fd_attr + !!netns_id_attr > 1) {
3254 NL_SET_ERR_MSG_MOD(info->extack, "multiple netns identifying attributes specified");
3255 return ERR_PTR(-EINVAL);
3258 if (netns_pid_attr) {
3259 net = get_net_ns_by_pid(nla_get_u32(netns_pid_attr));
3260 } else if (netns_fd_attr) {
3261 net = get_net_ns_by_fd(nla_get_u32(netns_fd_attr));
3262 } else if (netns_id_attr) {
3263 net = get_net_ns_by_id(sock_net(skb->sk),
3264 nla_get_u32(netns_id_attr));
3266 net = ERR_PTR(-EINVAL);
3269 net = ERR_PTR(-EINVAL);
3272 NL_SET_ERR_MSG_MOD(info->extack, "Unknown network namespace");
3273 return ERR_PTR(-EINVAL);
3275 if (!netlink_ns_capable(skb, net->user_ns, CAP_NET_ADMIN)) {
3277 return ERR_PTR(-EPERM);
3282 static void devlink_param_notify(struct devlink *devlink,
3283 unsigned int port_index,
3284 struct devlink_param_item *param_item,
3285 enum devlink_command cmd);
3287 static void devlink_reload_netns_change(struct devlink *devlink,
3288 struct net *dest_net)
3290 struct devlink_param_item *param_item;
3292 /* Userspace needs to be notified about devlink objects
3293 * removed from original and entering new network namespace.
3294 * The rest of the devlink objects are re-created during
3295 * reload process so the notifications are generated separatelly.
3298 list_for_each_entry(param_item, &devlink->param_list, list)
3299 devlink_param_notify(devlink, 0, param_item,
3300 DEVLINK_CMD_PARAM_DEL);
3301 devlink_notify(devlink, DEVLINK_CMD_DEL);
3303 __devlink_net_set(devlink, dest_net);
3305 devlink_notify(devlink, DEVLINK_CMD_NEW);
3306 list_for_each_entry(param_item, &devlink->param_list, list)
3307 devlink_param_notify(devlink, 0, param_item,
3308 DEVLINK_CMD_PARAM_NEW);
3311 static bool devlink_reload_supported(const struct devlink_ops *ops)
3313 return ops->reload_down && ops->reload_up;
3316 static void devlink_reload_failed_set(struct devlink *devlink,
3319 if (devlink->reload_failed == reload_failed)
3321 devlink->reload_failed = reload_failed;
3322 devlink_notify(devlink, DEVLINK_CMD_NEW);
3325 bool devlink_is_reload_failed(const struct devlink *devlink)
3327 return devlink->reload_failed;
3329 EXPORT_SYMBOL_GPL(devlink_is_reload_failed);
3332 __devlink_reload_stats_update(struct devlink *devlink, u32 *reload_stats,
3333 enum devlink_reload_limit limit, u32 actions_performed)
3335 unsigned long actions = actions_performed;
3339 for_each_set_bit(action, &actions, __DEVLINK_RELOAD_ACTION_MAX) {
3340 stat_idx = limit * __DEVLINK_RELOAD_ACTION_MAX + action;
3341 reload_stats[stat_idx]++;
3343 devlink_notify(devlink, DEVLINK_CMD_NEW);
3347 devlink_reload_stats_update(struct devlink *devlink, enum devlink_reload_limit limit,
3348 u32 actions_performed)
3350 __devlink_reload_stats_update(devlink, devlink->stats.reload_stats, limit,
3355 * devlink_remote_reload_actions_performed - Update devlink on reload actions
3356 * performed which are not a direct result of devlink reload call.
3358 * This should be called by a driver after performing reload actions in case it was not
3359 * a result of devlink reload call. For example fw_activate was performed as a result
3360 * of devlink reload triggered fw_activate on another host.
3361 * The motivation for this function is to keep data on reload actions performed on this
3362 * function whether it was done due to direct devlink reload call or not.
3365 * @limit: reload limit
3366 * @actions_performed: bitmask of actions performed
3368 void devlink_remote_reload_actions_performed(struct devlink *devlink,
3369 enum devlink_reload_limit limit,
3370 u32 actions_performed)
3372 if (WARN_ON(!actions_performed ||
3373 actions_performed & BIT(DEVLINK_RELOAD_ACTION_UNSPEC) ||
3374 actions_performed >= BIT(__DEVLINK_RELOAD_ACTION_MAX) ||
3375 limit > DEVLINK_RELOAD_LIMIT_MAX))
3378 __devlink_reload_stats_update(devlink, devlink->stats.remote_reload_stats, limit,
3381 EXPORT_SYMBOL_GPL(devlink_remote_reload_actions_performed);
3383 static int devlink_reload(struct devlink *devlink, struct net *dest_net,
3384 enum devlink_reload_action action, enum devlink_reload_limit limit,
3385 u32 *actions_performed, struct netlink_ext_ack *extack)
3387 u32 remote_reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE];
3390 if (!devlink->reload_enabled)
3393 memcpy(remote_reload_stats, devlink->stats.remote_reload_stats,
3394 sizeof(remote_reload_stats));
3395 err = devlink->ops->reload_down(devlink, !!dest_net, action, limit, extack);
3399 if (dest_net && !net_eq(dest_net, devlink_net(devlink)))
3400 devlink_reload_netns_change(devlink, dest_net);
3402 err = devlink->ops->reload_up(devlink, action, limit, actions_performed, extack);
3403 devlink_reload_failed_set(devlink, !!err);
3407 WARN_ON(!(*actions_performed & BIT(action)));
3408 /* Catch driver on updating the remote action within devlink reload */
3409 WARN_ON(memcmp(remote_reload_stats, devlink->stats.remote_reload_stats,
3410 sizeof(remote_reload_stats)));
3411 devlink_reload_stats_update(devlink, limit, *actions_performed);
3416 devlink_nl_reload_actions_performed_snd(struct devlink *devlink, u32 actions_performed,
3417 enum devlink_command cmd, struct genl_info *info)
3419 struct sk_buff *msg;
3422 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3426 hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq, &devlink_nl_family, 0, cmd);
3430 if (devlink_nl_put_handle(msg, devlink))
3431 goto nla_put_failure;
3433 if (nla_put_bitfield32(msg, DEVLINK_ATTR_RELOAD_ACTIONS_PERFORMED, actions_performed,
3435 goto nla_put_failure;
3436 genlmsg_end(msg, hdr);
3438 return genlmsg_reply(msg, info);
3441 genlmsg_cancel(msg, hdr);
3447 static int devlink_nl_cmd_reload(struct sk_buff *skb, struct genl_info *info)
3449 struct devlink *devlink = info->user_ptr[0];
3450 enum devlink_reload_action action;
3451 enum devlink_reload_limit limit;
3452 struct net *dest_net = NULL;
3453 u32 actions_performed;
3456 if (!devlink_reload_supported(devlink->ops))
3459 err = devlink_resources_validate(devlink, NULL, info);
3461 NL_SET_ERR_MSG_MOD(info->extack, "resources size validation failed");
3465 if (info->attrs[DEVLINK_ATTR_NETNS_PID] ||
3466 info->attrs[DEVLINK_ATTR_NETNS_FD] ||
3467 info->attrs[DEVLINK_ATTR_NETNS_ID]) {
3468 dest_net = devlink_netns_get(skb, info);
3469 if (IS_ERR(dest_net))
3470 return PTR_ERR(dest_net);
3473 if (info->attrs[DEVLINK_ATTR_RELOAD_ACTION])
3474 action = nla_get_u8(info->attrs[DEVLINK_ATTR_RELOAD_ACTION]);
3476 action = DEVLINK_RELOAD_ACTION_DRIVER_REINIT;
3478 if (!devlink_reload_action_is_supported(devlink, action)) {
3479 NL_SET_ERR_MSG_MOD(info->extack,
3480 "Requested reload action is not supported by the driver");
3484 limit = DEVLINK_RELOAD_LIMIT_UNSPEC;
3485 if (info->attrs[DEVLINK_ATTR_RELOAD_LIMITS]) {
3486 struct nla_bitfield32 limits;
3487 u32 limits_selected;
3489 limits = nla_get_bitfield32(info->attrs[DEVLINK_ATTR_RELOAD_LIMITS]);
3490 limits_selected = limits.value & limits.selector;
3491 if (!limits_selected) {
3492 NL_SET_ERR_MSG_MOD(info->extack, "Invalid limit selected");
3495 for (limit = 0 ; limit <= DEVLINK_RELOAD_LIMIT_MAX ; limit++)
3496 if (limits_selected & BIT(limit))
3498 /* UAPI enables multiselection, but currently it is not used */
3499 if (limits_selected != BIT(limit)) {
3500 NL_SET_ERR_MSG_MOD(info->extack,
3501 "Multiselection of limit is not supported");
3504 if (!devlink_reload_limit_is_supported(devlink, limit)) {
3505 NL_SET_ERR_MSG_MOD(info->extack,
3506 "Requested limit is not supported by the driver");
3509 if (devlink_reload_combination_is_invalid(action, limit)) {
3510 NL_SET_ERR_MSG_MOD(info->extack,
3511 "Requested limit is invalid for this action");
3515 err = devlink_reload(devlink, dest_net, action, limit, &actions_performed, info->extack);
3522 /* For backward compatibility generate reply only if attributes used by user */
3523 if (!info->attrs[DEVLINK_ATTR_RELOAD_ACTION] && !info->attrs[DEVLINK_ATTR_RELOAD_LIMITS])
3526 return devlink_nl_reload_actions_performed_snd(devlink, actions_performed,
3527 DEVLINK_CMD_RELOAD, info);
3530 static int devlink_nl_flash_update_fill(struct sk_buff *msg,
3531 struct devlink *devlink,
3532 enum devlink_command cmd,
3533 struct devlink_flash_notify *params)
3537 hdr = genlmsg_put(msg, 0, 0, &devlink_nl_family, 0, cmd);
3541 if (devlink_nl_put_handle(msg, devlink))
3542 goto nla_put_failure;
3544 if (cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS)
3547 if (params->status_msg &&
3548 nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_MSG,
3549 params->status_msg))
3550 goto nla_put_failure;
3551 if (params->component &&
3552 nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_COMPONENT,
3554 goto nla_put_failure;
3555 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_DONE,
3556 params->done, DEVLINK_ATTR_PAD))
3557 goto nla_put_failure;
3558 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TOTAL,
3559 params->total, DEVLINK_ATTR_PAD))
3560 goto nla_put_failure;
3561 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TIMEOUT,
3562 params->timeout, DEVLINK_ATTR_PAD))
3563 goto nla_put_failure;
3566 genlmsg_end(msg, hdr);
3570 genlmsg_cancel(msg, hdr);
3574 static void __devlink_flash_update_notify(struct devlink *devlink,
3575 enum devlink_command cmd,
3576 struct devlink_flash_notify *params)
3578 struct sk_buff *msg;
3581 WARN_ON(cmd != DEVLINK_CMD_FLASH_UPDATE &&
3582 cmd != DEVLINK_CMD_FLASH_UPDATE_END &&
3583 cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS);
3585 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3589 err = devlink_nl_flash_update_fill(msg, devlink, cmd, params);
3593 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
3594 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
3601 static void devlink_flash_update_begin_notify(struct devlink *devlink)
3603 struct devlink_flash_notify params = { 0 };
3605 __devlink_flash_update_notify(devlink,
3606 DEVLINK_CMD_FLASH_UPDATE,
3610 static void devlink_flash_update_end_notify(struct devlink *devlink)
3612 struct devlink_flash_notify params = { 0 };
3614 __devlink_flash_update_notify(devlink,
3615 DEVLINK_CMD_FLASH_UPDATE_END,
3619 void devlink_flash_update_status_notify(struct devlink *devlink,
3620 const char *status_msg,
3621 const char *component,
3623 unsigned long total)
3625 struct devlink_flash_notify params = {
3626 .status_msg = status_msg,
3627 .component = component,
3632 __devlink_flash_update_notify(devlink,
3633 DEVLINK_CMD_FLASH_UPDATE_STATUS,
3636 EXPORT_SYMBOL_GPL(devlink_flash_update_status_notify);
3638 void devlink_flash_update_timeout_notify(struct devlink *devlink,
3639 const char *status_msg,
3640 const char *component,
3641 unsigned long timeout)
3643 struct devlink_flash_notify params = {
3644 .status_msg = status_msg,
3645 .component = component,
3649 __devlink_flash_update_notify(devlink,
3650 DEVLINK_CMD_FLASH_UPDATE_STATUS,
3653 EXPORT_SYMBOL_GPL(devlink_flash_update_timeout_notify);
3655 static int devlink_nl_cmd_flash_update(struct sk_buff *skb,
3656 struct genl_info *info)
3658 struct nlattr *nla_component, *nla_overwrite_mask, *nla_file_name;
3659 struct devlink_flash_update_params params = {};
3660 struct devlink *devlink = info->user_ptr[0];
3661 const char *file_name;
3662 u32 supported_params;
3665 if (!devlink->ops->flash_update)
3668 if (!info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME])
3671 supported_params = devlink->ops->supported_flash_update_params;
3673 nla_component = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_COMPONENT];
3674 if (nla_component) {
3675 if (!(supported_params & DEVLINK_SUPPORT_FLASH_UPDATE_COMPONENT)) {
3676 NL_SET_ERR_MSG_ATTR(info->extack, nla_component,
3677 "component update is not supported by this device");
3680 params.component = nla_data(nla_component);
3683 nla_overwrite_mask = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_OVERWRITE_MASK];
3684 if (nla_overwrite_mask) {
3685 struct nla_bitfield32 sections;
3687 if (!(supported_params & DEVLINK_SUPPORT_FLASH_UPDATE_OVERWRITE_MASK)) {
3688 NL_SET_ERR_MSG_ATTR(info->extack, nla_overwrite_mask,
3689 "overwrite settings are not supported by this device");
3692 sections = nla_get_bitfield32(nla_overwrite_mask);
3693 params.overwrite_mask = sections.value & sections.selector;
3696 nla_file_name = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME];
3697 file_name = nla_data(nla_file_name);
3698 ret = request_firmware(¶ms.fw, file_name, devlink->dev);
3700 NL_SET_ERR_MSG_ATTR(info->extack, nla_file_name, "failed to locate the requested firmware file");
3704 devlink_flash_update_begin_notify(devlink);
3705 ret = devlink->ops->flash_update(devlink, ¶ms, info->extack);
3706 devlink_flash_update_end_notify(devlink);
3708 release_firmware(params.fw);
3713 static const struct devlink_param devlink_param_generic[] = {
3715 .id = DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET,
3716 .name = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_NAME,
3717 .type = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_TYPE,
3720 .id = DEVLINK_PARAM_GENERIC_ID_MAX_MACS,
3721 .name = DEVLINK_PARAM_GENERIC_MAX_MACS_NAME,
3722 .type = DEVLINK_PARAM_GENERIC_MAX_MACS_TYPE,
3725 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_SRIOV,
3726 .name = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_NAME,
3727 .type = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_TYPE,
3730 .id = DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT,
3731 .name = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_NAME,
3732 .type = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_TYPE,
3735 .id = DEVLINK_PARAM_GENERIC_ID_IGNORE_ARI,
3736 .name = DEVLINK_PARAM_GENERIC_IGNORE_ARI_NAME,
3737 .type = DEVLINK_PARAM_GENERIC_IGNORE_ARI_TYPE,
3740 .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX,
3741 .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_NAME,
3742 .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_TYPE,
3745 .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN,
3746 .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_NAME,
3747 .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_TYPE,
3750 .id = DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY,
3751 .name = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_NAME,
3752 .type = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_TYPE,
3755 .id = DEVLINK_PARAM_GENERIC_ID_RESET_DEV_ON_DRV_PROBE,
3756 .name = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_NAME,
3757 .type = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_TYPE,
3760 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_ROCE,
3761 .name = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_NAME,
3762 .type = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_TYPE,
3765 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_REMOTE_DEV_RESET,
3766 .name = DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_NAME,
3767 .type = DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_TYPE,
3771 static int devlink_param_generic_verify(const struct devlink_param *param)
3773 /* verify it match generic parameter by id and name */
3774 if (param->id > DEVLINK_PARAM_GENERIC_ID_MAX)
3776 if (strcmp(param->name, devlink_param_generic[param->id].name))
3779 WARN_ON(param->type != devlink_param_generic[param->id].type);
3784 static int devlink_param_driver_verify(const struct devlink_param *param)
3788 if (param->id <= DEVLINK_PARAM_GENERIC_ID_MAX)
3790 /* verify no such name in generic params */
3791 for (i = 0; i <= DEVLINK_PARAM_GENERIC_ID_MAX; i++)
3792 if (!strcmp(param->name, devlink_param_generic[i].name))
3798 static struct devlink_param_item *
3799 devlink_param_find_by_name(struct list_head *param_list,
3800 const char *param_name)
3802 struct devlink_param_item *param_item;
3804 list_for_each_entry(param_item, param_list, list)
3805 if (!strcmp(param_item->param->name, param_name))
3810 static struct devlink_param_item *
3811 devlink_param_find_by_id(struct list_head *param_list, u32 param_id)
3813 struct devlink_param_item *param_item;
3815 list_for_each_entry(param_item, param_list, list)
3816 if (param_item->param->id == param_id)
3822 devlink_param_cmode_is_supported(const struct devlink_param *param,
3823 enum devlink_param_cmode cmode)
3825 return test_bit(cmode, ¶m->supported_cmodes);
3828 static int devlink_param_get(struct devlink *devlink,
3829 const struct devlink_param *param,
3830 struct devlink_param_gset_ctx *ctx)
3834 return param->get(devlink, param->id, ctx);
3837 static int devlink_param_set(struct devlink *devlink,
3838 const struct devlink_param *param,
3839 struct devlink_param_gset_ctx *ctx)
3843 return param->set(devlink, param->id, ctx);
3847 devlink_param_type_to_nla_type(enum devlink_param_type param_type)
3849 switch (param_type) {
3850 case DEVLINK_PARAM_TYPE_U8:
3852 case DEVLINK_PARAM_TYPE_U16:
3854 case DEVLINK_PARAM_TYPE_U32:
3856 case DEVLINK_PARAM_TYPE_STRING:
3858 case DEVLINK_PARAM_TYPE_BOOL:
3866 devlink_nl_param_value_fill_one(struct sk_buff *msg,
3867 enum devlink_param_type type,
3868 enum devlink_param_cmode cmode,
3869 union devlink_param_value val)
3871 struct nlattr *param_value_attr;
3873 param_value_attr = nla_nest_start_noflag(msg,
3874 DEVLINK_ATTR_PARAM_VALUE);
3875 if (!param_value_attr)
3876 goto nla_put_failure;
3878 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_CMODE, cmode))
3879 goto value_nest_cancel;
3882 case DEVLINK_PARAM_TYPE_U8:
3883 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu8))
3884 goto value_nest_cancel;
3886 case DEVLINK_PARAM_TYPE_U16:
3887 if (nla_put_u16(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu16))
3888 goto value_nest_cancel;
3890 case DEVLINK_PARAM_TYPE_U32:
3891 if (nla_put_u32(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu32))
3892 goto value_nest_cancel;
3894 case DEVLINK_PARAM_TYPE_STRING:
3895 if (nla_put_string(msg, DEVLINK_ATTR_PARAM_VALUE_DATA,
3897 goto value_nest_cancel;
3899 case DEVLINK_PARAM_TYPE_BOOL:
3901 nla_put_flag(msg, DEVLINK_ATTR_PARAM_VALUE_DATA))
3902 goto value_nest_cancel;
3906 nla_nest_end(msg, param_value_attr);
3910 nla_nest_cancel(msg, param_value_attr);
3915 static int devlink_nl_param_fill(struct sk_buff *msg, struct devlink *devlink,
3916 unsigned int port_index,
3917 struct devlink_param_item *param_item,
3918 enum devlink_command cmd,
3919 u32 portid, u32 seq, int flags)
3921 union devlink_param_value param_value[DEVLINK_PARAM_CMODE_MAX + 1];
3922 bool param_value_set[DEVLINK_PARAM_CMODE_MAX + 1] = {};
3923 const struct devlink_param *param = param_item->param;
3924 struct devlink_param_gset_ctx ctx;
3925 struct nlattr *param_values_list;
3926 struct nlattr *param_attr;
3932 /* Get value from driver part to driverinit configuration mode */
3933 for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
3934 if (!devlink_param_cmode_is_supported(param, i))
3936 if (i == DEVLINK_PARAM_CMODE_DRIVERINIT) {
3937 if (!param_item->driverinit_value_valid)
3939 param_value[i] = param_item->driverinit_value;
3941 if (!param_item->published)
3944 err = devlink_param_get(devlink, param, &ctx);
3947 param_value[i] = ctx.val;
3949 param_value_set[i] = true;
3952 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
3956 if (devlink_nl_put_handle(msg, devlink))
3957 goto genlmsg_cancel;
3959 if (cmd == DEVLINK_CMD_PORT_PARAM_GET ||
3960 cmd == DEVLINK_CMD_PORT_PARAM_NEW ||
3961 cmd == DEVLINK_CMD_PORT_PARAM_DEL)
3962 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, port_index))
3963 goto genlmsg_cancel;
3965 param_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PARAM);
3967 goto genlmsg_cancel;
3968 if (nla_put_string(msg, DEVLINK_ATTR_PARAM_NAME, param->name))
3969 goto param_nest_cancel;
3970 if (param->generic && nla_put_flag(msg, DEVLINK_ATTR_PARAM_GENERIC))
3971 goto param_nest_cancel;
3973 nla_type = devlink_param_type_to_nla_type(param->type);
3975 goto param_nest_cancel;
3976 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_TYPE, nla_type))
3977 goto param_nest_cancel;
3979 param_values_list = nla_nest_start_noflag(msg,
3980 DEVLINK_ATTR_PARAM_VALUES_LIST);
3981 if (!param_values_list)
3982 goto param_nest_cancel;
3984 for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
3985 if (!param_value_set[i])
3987 err = devlink_nl_param_value_fill_one(msg, param->type,
3990 goto values_list_nest_cancel;
3993 nla_nest_end(msg, param_values_list);
3994 nla_nest_end(msg, param_attr);
3995 genlmsg_end(msg, hdr);
3998 values_list_nest_cancel:
3999 nla_nest_end(msg, param_values_list);
4001 nla_nest_cancel(msg, param_attr);
4003 genlmsg_cancel(msg, hdr);
4007 static void devlink_param_notify(struct devlink *devlink,
4008 unsigned int port_index,
4009 struct devlink_param_item *param_item,
4010 enum devlink_command cmd)
4012 struct sk_buff *msg;
4015 WARN_ON(cmd != DEVLINK_CMD_PARAM_NEW && cmd != DEVLINK_CMD_PARAM_DEL &&
4016 cmd != DEVLINK_CMD_PORT_PARAM_NEW &&
4017 cmd != DEVLINK_CMD_PORT_PARAM_DEL);
4019 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4022 err = devlink_nl_param_fill(msg, devlink, port_index, param_item, cmd,
4029 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
4030 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
4033 static int devlink_nl_cmd_param_get_dumpit(struct sk_buff *msg,
4034 struct netlink_callback *cb)
4036 struct devlink_param_item *param_item;
4037 struct devlink *devlink;
4038 int start = cb->args[0];
4042 mutex_lock(&devlink_mutex);
4043 list_for_each_entry(devlink, &devlink_list, list) {
4044 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
4046 mutex_lock(&devlink->lock);
4047 list_for_each_entry(param_item, &devlink->param_list, list) {
4052 err = devlink_nl_param_fill(msg, devlink, 0, param_item,
4053 DEVLINK_CMD_PARAM_GET,
4054 NETLINK_CB(cb->skb).portid,
4057 if (err == -EOPNOTSUPP) {
4060 mutex_unlock(&devlink->lock);
4065 mutex_unlock(&devlink->lock);
4068 mutex_unlock(&devlink_mutex);
4070 if (err != -EMSGSIZE)
4078 devlink_param_type_get_from_info(struct genl_info *info,
4079 enum devlink_param_type *param_type)
4081 if (!info->attrs[DEVLINK_ATTR_PARAM_TYPE])
4084 switch (nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_TYPE])) {
4086 *param_type = DEVLINK_PARAM_TYPE_U8;
4089 *param_type = DEVLINK_PARAM_TYPE_U16;
4092 *param_type = DEVLINK_PARAM_TYPE_U32;
4095 *param_type = DEVLINK_PARAM_TYPE_STRING;
4098 *param_type = DEVLINK_PARAM_TYPE_BOOL;
4108 devlink_param_value_get_from_info(const struct devlink_param *param,
4109 struct genl_info *info,
4110 union devlink_param_value *value)
4112 struct nlattr *param_data;
4115 param_data = info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA];
4117 if (param->type != DEVLINK_PARAM_TYPE_BOOL && !param_data)
4120 switch (param->type) {
4121 case DEVLINK_PARAM_TYPE_U8:
4122 if (nla_len(param_data) != sizeof(u8))
4124 value->vu8 = nla_get_u8(param_data);
4126 case DEVLINK_PARAM_TYPE_U16:
4127 if (nla_len(param_data) != sizeof(u16))
4129 value->vu16 = nla_get_u16(param_data);
4131 case DEVLINK_PARAM_TYPE_U32:
4132 if (nla_len(param_data) != sizeof(u32))
4134 value->vu32 = nla_get_u32(param_data);
4136 case DEVLINK_PARAM_TYPE_STRING:
4137 len = strnlen(nla_data(param_data), nla_len(param_data));
4138 if (len == nla_len(param_data) ||
4139 len >= __DEVLINK_PARAM_MAX_STRING_VALUE)
4141 strcpy(value->vstr, nla_data(param_data));
4143 case DEVLINK_PARAM_TYPE_BOOL:
4144 if (param_data && nla_len(param_data))
4146 value->vbool = nla_get_flag(param_data);
4152 static struct devlink_param_item *
4153 devlink_param_get_from_info(struct list_head *param_list,
4154 struct genl_info *info)
4158 if (!info->attrs[DEVLINK_ATTR_PARAM_NAME])
4161 param_name = nla_data(info->attrs[DEVLINK_ATTR_PARAM_NAME]);
4162 return devlink_param_find_by_name(param_list, param_name);
4165 static int devlink_nl_cmd_param_get_doit(struct sk_buff *skb,
4166 struct genl_info *info)
4168 struct devlink *devlink = info->user_ptr[0];
4169 struct devlink_param_item *param_item;
4170 struct sk_buff *msg;
4173 param_item = devlink_param_get_from_info(&devlink->param_list, info);
4177 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4181 err = devlink_nl_param_fill(msg, devlink, 0, param_item,
4182 DEVLINK_CMD_PARAM_GET,
4183 info->snd_portid, info->snd_seq, 0);
4189 return genlmsg_reply(msg, info);
4192 static int __devlink_nl_cmd_param_set_doit(struct devlink *devlink,
4193 unsigned int port_index,
4194 struct list_head *param_list,
4195 struct genl_info *info,
4196 enum devlink_command cmd)
4198 enum devlink_param_type param_type;
4199 struct devlink_param_gset_ctx ctx;
4200 enum devlink_param_cmode cmode;
4201 struct devlink_param_item *param_item;
4202 const struct devlink_param *param;
4203 union devlink_param_value value;
4206 param_item = devlink_param_get_from_info(param_list, info);
4209 param = param_item->param;
4210 err = devlink_param_type_get_from_info(info, ¶m_type);
4213 if (param_type != param->type)
4215 err = devlink_param_value_get_from_info(param, info, &value);
4218 if (param->validate) {
4219 err = param->validate(devlink, param->id, value, info->extack);
4224 if (!info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE])
4226 cmode = nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE]);
4227 if (!devlink_param_cmode_is_supported(param, cmode))
4230 if (cmode == DEVLINK_PARAM_CMODE_DRIVERINIT) {
4231 if (param->type == DEVLINK_PARAM_TYPE_STRING)
4232 strcpy(param_item->driverinit_value.vstr, value.vstr);
4234 param_item->driverinit_value = value;
4235 param_item->driverinit_value_valid = true;
4241 err = devlink_param_set(devlink, param, &ctx);
4246 devlink_param_notify(devlink, port_index, param_item, cmd);
4250 static int devlink_nl_cmd_param_set_doit(struct sk_buff *skb,
4251 struct genl_info *info)
4253 struct devlink *devlink = info->user_ptr[0];
4255 return __devlink_nl_cmd_param_set_doit(devlink, 0, &devlink->param_list,
4256 info, DEVLINK_CMD_PARAM_NEW);
4259 static int devlink_param_register_one(struct devlink *devlink,
4260 unsigned int port_index,
4261 struct list_head *param_list,
4262 const struct devlink_param *param,
4263 enum devlink_command cmd)
4265 struct devlink_param_item *param_item;
4267 if (devlink_param_find_by_name(param_list, param->name))
4270 if (param->supported_cmodes == BIT(DEVLINK_PARAM_CMODE_DRIVERINIT))
4271 WARN_ON(param->get || param->set);
4273 WARN_ON(!param->get || !param->set);
4275 param_item = kzalloc(sizeof(*param_item), GFP_KERNEL);
4278 param_item->param = param;
4280 list_add_tail(¶m_item->list, param_list);
4281 devlink_param_notify(devlink, port_index, param_item, cmd);
4285 static void devlink_param_unregister_one(struct devlink *devlink,
4286 unsigned int port_index,
4287 struct list_head *param_list,
4288 const struct devlink_param *param,
4289 enum devlink_command cmd)
4291 struct devlink_param_item *param_item;
4293 param_item = devlink_param_find_by_name(param_list, param->name);
4294 WARN_ON(!param_item);
4295 devlink_param_notify(devlink, port_index, param_item, cmd);
4296 list_del(¶m_item->list);
4300 static int devlink_nl_cmd_port_param_get_dumpit(struct sk_buff *msg,
4301 struct netlink_callback *cb)
4303 struct devlink_param_item *param_item;
4304 struct devlink_port *devlink_port;
4305 struct devlink *devlink;
4306 int start = cb->args[0];
4310 mutex_lock(&devlink_mutex);
4311 list_for_each_entry(devlink, &devlink_list, list) {
4312 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
4314 mutex_lock(&devlink->lock);
4315 list_for_each_entry(devlink_port, &devlink->port_list, list) {
4316 list_for_each_entry(param_item,
4317 &devlink_port->param_list, list) {
4322 err = devlink_nl_param_fill(msg,
4323 devlink_port->devlink,
4324 devlink_port->index, param_item,
4325 DEVLINK_CMD_PORT_PARAM_GET,
4326 NETLINK_CB(cb->skb).portid,
4329 if (err == -EOPNOTSUPP) {
4332 mutex_unlock(&devlink->lock);
4338 mutex_unlock(&devlink->lock);
4341 mutex_unlock(&devlink_mutex);
4343 if (err != -EMSGSIZE)
4350 static int devlink_nl_cmd_port_param_get_doit(struct sk_buff *skb,
4351 struct genl_info *info)
4353 struct devlink_port *devlink_port = info->user_ptr[1];
4354 struct devlink_param_item *param_item;
4355 struct sk_buff *msg;
4358 param_item = devlink_param_get_from_info(&devlink_port->param_list,
4363 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4367 err = devlink_nl_param_fill(msg, devlink_port->devlink,
4368 devlink_port->index, param_item,
4369 DEVLINK_CMD_PORT_PARAM_GET,
4370 info->snd_portid, info->snd_seq, 0);
4376 return genlmsg_reply(msg, info);
4379 static int devlink_nl_cmd_port_param_set_doit(struct sk_buff *skb,
4380 struct genl_info *info)
4382 struct devlink_port *devlink_port = info->user_ptr[1];
4384 return __devlink_nl_cmd_param_set_doit(devlink_port->devlink,
4385 devlink_port->index,
4386 &devlink_port->param_list, info,
4387 DEVLINK_CMD_PORT_PARAM_NEW);
4390 static int devlink_nl_region_snapshot_id_put(struct sk_buff *msg,
4391 struct devlink *devlink,
4392 struct devlink_snapshot *snapshot)
4394 struct nlattr *snap_attr;
4397 snap_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_SNAPSHOT);
4401 err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID, snapshot->id);
4403 goto nla_put_failure;
4405 nla_nest_end(msg, snap_attr);
4409 nla_nest_cancel(msg, snap_attr);
4413 static int devlink_nl_region_snapshots_id_put(struct sk_buff *msg,
4414 struct devlink *devlink,
4415 struct devlink_region *region)
4417 struct devlink_snapshot *snapshot;
4418 struct nlattr *snapshots_attr;
4421 snapshots_attr = nla_nest_start_noflag(msg,
4422 DEVLINK_ATTR_REGION_SNAPSHOTS);
4423 if (!snapshots_attr)
4426 list_for_each_entry(snapshot, ®ion->snapshot_list, list) {
4427 err = devlink_nl_region_snapshot_id_put(msg, devlink, snapshot);
4429 goto nla_put_failure;
4432 nla_nest_end(msg, snapshots_attr);
4436 nla_nest_cancel(msg, snapshots_attr);
4440 static int devlink_nl_region_fill(struct sk_buff *msg, struct devlink *devlink,
4441 enum devlink_command cmd, u32 portid,
4443 struct devlink_region *region)
4448 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
4452 err = devlink_nl_put_handle(msg, devlink);
4454 goto nla_put_failure;
4457 err = nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
4458 region->port->index);
4460 goto nla_put_failure;
4463 err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME, region->ops->name);
4465 goto nla_put_failure;
4467 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
4471 goto nla_put_failure;
4473 err = devlink_nl_region_snapshots_id_put(msg, devlink, region);
4475 goto nla_put_failure;
4477 genlmsg_end(msg, hdr);
4481 genlmsg_cancel(msg, hdr);
4485 static struct sk_buff *
4486 devlink_nl_region_notify_build(struct devlink_region *region,
4487 struct devlink_snapshot *snapshot,
4488 enum devlink_command cmd, u32 portid, u32 seq)
4490 struct devlink *devlink = region->devlink;
4491 struct sk_buff *msg;
4496 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4498 return ERR_PTR(-ENOMEM);
4500 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, 0, cmd);
4506 err = devlink_nl_put_handle(msg, devlink);
4508 goto out_cancel_msg;
4511 err = nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
4512 region->port->index);
4514 goto out_cancel_msg;
4517 err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME,
4520 goto out_cancel_msg;
4523 err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID,
4526 goto out_cancel_msg;
4528 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
4529 region->size, DEVLINK_ATTR_PAD);
4531 goto out_cancel_msg;
4533 genlmsg_end(msg, hdr);
4538 genlmsg_cancel(msg, hdr);
4541 return ERR_PTR(err);
4544 static void devlink_nl_region_notify(struct devlink_region *region,
4545 struct devlink_snapshot *snapshot,
4546 enum devlink_command cmd)
4548 struct devlink *devlink = region->devlink;
4549 struct sk_buff *msg;
4551 WARN_ON(cmd != DEVLINK_CMD_REGION_NEW && cmd != DEVLINK_CMD_REGION_DEL);
4553 msg = devlink_nl_region_notify_build(region, snapshot, cmd, 0, 0);
4557 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
4558 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
4562 * __devlink_snapshot_id_increment - Increment number of snapshots using an id
4563 * @devlink: devlink instance
4564 * @id: the snapshot id
4566 * Track when a new snapshot begins using an id. Load the count for the
4567 * given id from the snapshot xarray, increment it, and store it back.
4569 * Called when a new snapshot is created with the given id.
4571 * The id *must* have been previously allocated by
4572 * devlink_region_snapshot_id_get().
4574 * Returns 0 on success, or an error on failure.
4576 static int __devlink_snapshot_id_increment(struct devlink *devlink, u32 id)
4578 unsigned long count;
4581 lockdep_assert_held(&devlink->lock);
4583 p = xa_load(&devlink->snapshot_ids, id);
4587 if (WARN_ON(!xa_is_value(p)))
4590 count = xa_to_value(p);
4593 return xa_err(xa_store(&devlink->snapshot_ids, id, xa_mk_value(count),
4598 * __devlink_snapshot_id_decrement - Decrease number of snapshots using an id
4599 * @devlink: devlink instance
4600 * @id: the snapshot id
4602 * Track when a snapshot is deleted and stops using an id. Load the count
4603 * for the given id from the snapshot xarray, decrement it, and store it
4606 * If the count reaches zero, erase this id from the xarray, freeing it
4607 * up for future re-use by devlink_region_snapshot_id_get().
4609 * Called when a snapshot using the given id is deleted, and when the
4610 * initial allocator of the id is finished using it.
4612 static void __devlink_snapshot_id_decrement(struct devlink *devlink, u32 id)
4614 unsigned long count;
4617 lockdep_assert_held(&devlink->lock);
4619 p = xa_load(&devlink->snapshot_ids, id);
4623 if (WARN_ON(!xa_is_value(p)))
4626 count = xa_to_value(p);
4630 xa_store(&devlink->snapshot_ids, id, xa_mk_value(count),
4633 /* If this was the last user, we can erase this id */
4634 xa_erase(&devlink->snapshot_ids, id);
4639 * __devlink_snapshot_id_insert - Insert a specific snapshot ID
4640 * @devlink: devlink instance
4641 * @id: the snapshot id
4643 * Mark the given snapshot id as used by inserting a zero value into the
4646 * This must be called while holding the devlink instance lock. Unlike
4647 * devlink_snapshot_id_get, the initial reference count is zero, not one.
4648 * It is expected that the id will immediately be used before
4649 * releasing the devlink instance lock.
4651 * Returns zero on success, or an error code if the snapshot id could not
4654 static int __devlink_snapshot_id_insert(struct devlink *devlink, u32 id)
4656 lockdep_assert_held(&devlink->lock);
4658 if (xa_load(&devlink->snapshot_ids, id))
4661 return xa_err(xa_store(&devlink->snapshot_ids, id, xa_mk_value(0),
4666 * __devlink_region_snapshot_id_get - get snapshot ID
4667 * @devlink: devlink instance
4668 * @id: storage to return snapshot id
4670 * Allocates a new snapshot id. Returns zero on success, or a negative
4671 * error on failure. Must be called while holding the devlink instance
4674 * Snapshot IDs are tracked using an xarray which stores the number of
4675 * users of the snapshot id.
4677 * Note that the caller of this function counts as a 'user', in order to
4678 * avoid race conditions. The caller must release its hold on the
4679 * snapshot by using devlink_region_snapshot_id_put.
4681 static int __devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id)
4683 lockdep_assert_held(&devlink->lock);
4685 return xa_alloc(&devlink->snapshot_ids, id, xa_mk_value(1),
4686 xa_limit_32b, GFP_KERNEL);
4690 * __devlink_region_snapshot_create - create a new snapshot
4691 * This will add a new snapshot of a region. The snapshot
4692 * will be stored on the region struct and can be accessed
4693 * from devlink. This is useful for future analyses of snapshots.
4694 * Multiple snapshots can be created on a region.
4695 * The @snapshot_id should be obtained using the getter function.
4697 * Must be called only while holding the devlink instance lock.
4699 * @region: devlink region of the snapshot
4700 * @data: snapshot data
4701 * @snapshot_id: snapshot id to be created
4704 __devlink_region_snapshot_create(struct devlink_region *region,
4705 u8 *data, u32 snapshot_id)
4707 struct devlink *devlink = region->devlink;
4708 struct devlink_snapshot *snapshot;
4711 lockdep_assert_held(&devlink->lock);
4713 /* check if region can hold one more snapshot */
4714 if (region->cur_snapshots == region->max_snapshots)
4717 if (devlink_region_snapshot_get_by_id(region, snapshot_id))
4720 snapshot = kzalloc(sizeof(*snapshot), GFP_KERNEL);
4724 err = __devlink_snapshot_id_increment(devlink, snapshot_id);
4726 goto err_snapshot_id_increment;
4728 snapshot->id = snapshot_id;
4729 snapshot->region = region;
4730 snapshot->data = data;
4732 list_add_tail(&snapshot->list, ®ion->snapshot_list);
4734 region->cur_snapshots++;
4736 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_NEW);
4739 err_snapshot_id_increment:
4744 static void devlink_region_snapshot_del(struct devlink_region *region,
4745 struct devlink_snapshot *snapshot)
4747 struct devlink *devlink = region->devlink;
4749 lockdep_assert_held(&devlink->lock);
4751 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_DEL);
4752 region->cur_snapshots--;
4753 list_del(&snapshot->list);
4754 region->ops->destructor(snapshot->data);
4755 __devlink_snapshot_id_decrement(devlink, snapshot->id);
4759 static int devlink_nl_cmd_region_get_doit(struct sk_buff *skb,
4760 struct genl_info *info)
4762 struct devlink *devlink = info->user_ptr[0];
4763 struct devlink_port *port = NULL;
4764 struct devlink_region *region;
4765 const char *region_name;
4766 struct sk_buff *msg;
4770 if (!info->attrs[DEVLINK_ATTR_REGION_NAME])
4773 if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
4774 index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
4776 port = devlink_port_get_by_index(devlink, index);
4781 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
4783 region = devlink_port_region_get_by_name(port, region_name);
4785 region = devlink_region_get_by_name(devlink, region_name);
4790 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4794 err = devlink_nl_region_fill(msg, devlink, DEVLINK_CMD_REGION_GET,
4795 info->snd_portid, info->snd_seq, 0,
4802 return genlmsg_reply(msg, info);
4805 static int devlink_nl_cmd_region_get_port_dumpit(struct sk_buff *msg,
4806 struct netlink_callback *cb,
4807 struct devlink_port *port,
4811 struct devlink_region *region;
4814 list_for_each_entry(region, &port->region_list, list) {
4819 err = devlink_nl_region_fill(msg, port->devlink,
4820 DEVLINK_CMD_REGION_GET,
4821 NETLINK_CB(cb->skb).portid,
4823 NLM_F_MULTI, region);
4833 static int devlink_nl_cmd_region_get_devlink_dumpit(struct sk_buff *msg,
4834 struct netlink_callback *cb,
4835 struct devlink *devlink,
4839 struct devlink_region *region;
4840 struct devlink_port *port;
4843 mutex_lock(&devlink->lock);
4844 list_for_each_entry(region, &devlink->region_list, list) {
4849 err = devlink_nl_region_fill(msg, devlink,
4850 DEVLINK_CMD_REGION_GET,
4851 NETLINK_CB(cb->skb).portid,
4853 NLM_F_MULTI, region);
4859 list_for_each_entry(port, &devlink->port_list, list) {
4860 err = devlink_nl_cmd_region_get_port_dumpit(msg, cb, port, idx,
4867 mutex_unlock(&devlink->lock);
4871 static int devlink_nl_cmd_region_get_dumpit(struct sk_buff *msg,
4872 struct netlink_callback *cb)
4874 struct devlink *devlink;
4875 int start = cb->args[0];
4879 mutex_lock(&devlink_mutex);
4880 list_for_each_entry(devlink, &devlink_list, list) {
4881 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
4883 err = devlink_nl_cmd_region_get_devlink_dumpit(msg, cb, devlink,
4889 mutex_unlock(&devlink_mutex);
4894 static int devlink_nl_cmd_region_del(struct sk_buff *skb,
4895 struct genl_info *info)
4897 struct devlink *devlink = info->user_ptr[0];
4898 struct devlink_snapshot *snapshot;
4899 struct devlink_port *port = NULL;
4900 struct devlink_region *region;
4901 const char *region_name;
4905 if (!info->attrs[DEVLINK_ATTR_REGION_NAME] ||
4906 !info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID])
4909 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
4910 snapshot_id = nla_get_u32(info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
4912 if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
4913 index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
4915 port = devlink_port_get_by_index(devlink, index);
4921 region = devlink_port_region_get_by_name(port, region_name);
4923 region = devlink_region_get_by_name(devlink, region_name);
4928 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
4932 devlink_region_snapshot_del(region, snapshot);
4937 devlink_nl_cmd_region_new(struct sk_buff *skb, struct genl_info *info)
4939 struct devlink *devlink = info->user_ptr[0];
4940 struct devlink_snapshot *snapshot;
4941 struct devlink_port *port = NULL;
4942 struct nlattr *snapshot_id_attr;
4943 struct devlink_region *region;
4944 const char *region_name;
4950 if (!info->attrs[DEVLINK_ATTR_REGION_NAME]) {
4951 NL_SET_ERR_MSG_MOD(info->extack, "No region name provided");
4955 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
4957 if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
4958 index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
4960 port = devlink_port_get_by_index(devlink, index);
4966 region = devlink_port_region_get_by_name(port, region_name);
4968 region = devlink_region_get_by_name(devlink, region_name);
4971 NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not exist");
4975 if (!region->ops->snapshot) {
4976 NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not support taking an immediate snapshot");
4980 if (region->cur_snapshots == region->max_snapshots) {
4981 NL_SET_ERR_MSG_MOD(info->extack, "The region has reached the maximum number of stored snapshots");
4985 snapshot_id_attr = info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID];
4986 if (snapshot_id_attr) {
4987 snapshot_id = nla_get_u32(snapshot_id_attr);
4989 if (devlink_region_snapshot_get_by_id(region, snapshot_id)) {
4990 NL_SET_ERR_MSG_MOD(info->extack, "The requested snapshot id is already in use");
4994 err = __devlink_snapshot_id_insert(devlink, snapshot_id);
4998 err = __devlink_region_snapshot_id_get(devlink, &snapshot_id);
5000 NL_SET_ERR_MSG_MOD(info->extack, "Failed to allocate a new snapshot id");
5006 err = region->port_ops->snapshot(port, region->port_ops,
5007 info->extack, &data);
5009 err = region->ops->snapshot(devlink, region->ops,
5010 info->extack, &data);
5012 goto err_snapshot_capture;
5014 err = __devlink_region_snapshot_create(region, data, snapshot_id);
5016 goto err_snapshot_create;
5018 if (!snapshot_id_attr) {
5019 struct sk_buff *msg;
5021 snapshot = devlink_region_snapshot_get_by_id(region,
5023 if (WARN_ON(!snapshot))
5026 msg = devlink_nl_region_notify_build(region, snapshot,
5027 DEVLINK_CMD_REGION_NEW,
5030 err = PTR_ERR_OR_ZERO(msg);
5034 err = genlmsg_reply(msg, info);
5041 err_snapshot_create:
5042 region->ops->destructor(data);
5043 err_snapshot_capture:
5044 __devlink_snapshot_id_decrement(devlink, snapshot_id);
5048 devlink_region_snapshot_del(region, snapshot);
5052 static int devlink_nl_cmd_region_read_chunk_fill(struct sk_buff *msg,
5053 struct devlink *devlink,
5054 u8 *chunk, u32 chunk_size,
5057 struct nlattr *chunk_attr;
5060 chunk_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_CHUNK);
5064 err = nla_put(msg, DEVLINK_ATTR_REGION_CHUNK_DATA, chunk_size, chunk);
5066 goto nla_put_failure;
5068 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_CHUNK_ADDR, addr,
5071 goto nla_put_failure;
5073 nla_nest_end(msg, chunk_attr);
5077 nla_nest_cancel(msg, chunk_attr);
5081 #define DEVLINK_REGION_READ_CHUNK_SIZE 256
5083 static int devlink_nl_region_read_snapshot_fill(struct sk_buff *skb,
5084 struct devlink *devlink,
5085 struct devlink_region *region,
5086 struct nlattr **attrs,
5091 struct devlink_snapshot *snapshot;
5092 u64 curr_offset = start_offset;
5096 *new_offset = start_offset;
5098 snapshot_id = nla_get_u32(attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
5099 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
5103 while (curr_offset < end_offset) {
5107 if (end_offset - curr_offset < DEVLINK_REGION_READ_CHUNK_SIZE)
5108 data_size = end_offset - curr_offset;
5110 data_size = DEVLINK_REGION_READ_CHUNK_SIZE;
5112 data = &snapshot->data[curr_offset];
5113 err = devlink_nl_cmd_region_read_chunk_fill(skb, devlink,
5119 curr_offset += data_size;
5121 *new_offset = curr_offset;
5126 static int devlink_nl_cmd_region_read_dumpit(struct sk_buff *skb,
5127 struct netlink_callback *cb)
5129 const struct genl_dumpit_info *info = genl_dumpit_info(cb);
5130 u64 ret_offset, start_offset, end_offset = U64_MAX;
5131 struct nlattr **attrs = info->attrs;
5132 struct devlink_port *port = NULL;
5133 struct devlink_region *region;
5134 struct nlattr *chunks_attr;
5135 const char *region_name;
5136 struct devlink *devlink;
5141 start_offset = *((u64 *)&cb->args[0]);
5143 mutex_lock(&devlink_mutex);
5144 devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
5145 if (IS_ERR(devlink)) {
5146 err = PTR_ERR(devlink);
5150 mutex_lock(&devlink->lock);
5152 if (!attrs[DEVLINK_ATTR_REGION_NAME] ||
5153 !attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]) {
5158 if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
5159 index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
5161 port = devlink_port_get_by_index(devlink, index);
5168 region_name = nla_data(attrs[DEVLINK_ATTR_REGION_NAME]);
5171 region = devlink_port_region_get_by_name(port, region_name);
5173 region = devlink_region_get_by_name(devlink, region_name);
5180 if (attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR] &&
5181 attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]) {
5184 nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
5186 end_offset = nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
5187 end_offset += nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]);
5190 if (end_offset > region->size)
5191 end_offset = region->size;
5193 /* return 0 if there is no further data to read */
5194 if (start_offset == end_offset) {
5199 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
5200 &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI,
5201 DEVLINK_CMD_REGION_READ);
5207 err = devlink_nl_put_handle(skb, devlink);
5209 goto nla_put_failure;
5212 err = nla_put_u32(skb, DEVLINK_ATTR_PORT_INDEX,
5213 region->port->index);
5215 goto nla_put_failure;
5218 err = nla_put_string(skb, DEVLINK_ATTR_REGION_NAME, region_name);
5220 goto nla_put_failure;
5222 chunks_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_REGION_CHUNKS);
5225 goto nla_put_failure;
5228 err = devlink_nl_region_read_snapshot_fill(skb, devlink,
5231 end_offset, &ret_offset);
5233 if (err && err != -EMSGSIZE)
5234 goto nla_put_failure;
5236 /* Check if there was any progress done to prevent infinite loop */
5237 if (ret_offset == start_offset) {
5239 goto nla_put_failure;
5242 *((u64 *)&cb->args[0]) = ret_offset;
5244 nla_nest_end(skb, chunks_attr);
5245 genlmsg_end(skb, hdr);
5246 mutex_unlock(&devlink->lock);
5247 mutex_unlock(&devlink_mutex);
5252 genlmsg_cancel(skb, hdr);
5254 mutex_unlock(&devlink->lock);
5256 mutex_unlock(&devlink_mutex);
5260 struct devlink_info_req {
5261 struct sk_buff *msg;
5264 int devlink_info_driver_name_put(struct devlink_info_req *req, const char *name)
5266 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_DRIVER_NAME, name);
5268 EXPORT_SYMBOL_GPL(devlink_info_driver_name_put);
5270 int devlink_info_serial_number_put(struct devlink_info_req *req, const char *sn)
5272 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_SERIAL_NUMBER, sn);
5274 EXPORT_SYMBOL_GPL(devlink_info_serial_number_put);
5276 int devlink_info_board_serial_number_put(struct devlink_info_req *req,
5279 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_BOARD_SERIAL_NUMBER,
5282 EXPORT_SYMBOL_GPL(devlink_info_board_serial_number_put);
5284 static int devlink_info_version_put(struct devlink_info_req *req, int attr,
5285 const char *version_name,
5286 const char *version_value)
5288 struct nlattr *nest;
5291 nest = nla_nest_start_noflag(req->msg, attr);
5295 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_NAME,
5298 goto nla_put_failure;
5300 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_VALUE,
5303 goto nla_put_failure;
5305 nla_nest_end(req->msg, nest);
5310 nla_nest_cancel(req->msg, nest);
5314 int devlink_info_version_fixed_put(struct devlink_info_req *req,
5315 const char *version_name,
5316 const char *version_value)
5318 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_FIXED,
5319 version_name, version_value);
5321 EXPORT_SYMBOL_GPL(devlink_info_version_fixed_put);
5323 int devlink_info_version_stored_put(struct devlink_info_req *req,
5324 const char *version_name,
5325 const char *version_value)
5327 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_STORED,
5328 version_name, version_value);
5330 EXPORT_SYMBOL_GPL(devlink_info_version_stored_put);
5332 int devlink_info_version_running_put(struct devlink_info_req *req,
5333 const char *version_name,
5334 const char *version_value)
5336 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_RUNNING,
5337 version_name, version_value);
5339 EXPORT_SYMBOL_GPL(devlink_info_version_running_put);
5342 devlink_nl_info_fill(struct sk_buff *msg, struct devlink *devlink,
5343 enum devlink_command cmd, u32 portid,
5344 u32 seq, int flags, struct netlink_ext_ack *extack)
5346 struct devlink_info_req req;
5350 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
5355 if (devlink_nl_put_handle(msg, devlink))
5356 goto err_cancel_msg;
5359 err = devlink->ops->info_get(devlink, &req, extack);
5361 goto err_cancel_msg;
5363 genlmsg_end(msg, hdr);
5367 genlmsg_cancel(msg, hdr);
5371 static int devlink_nl_cmd_info_get_doit(struct sk_buff *skb,
5372 struct genl_info *info)
5374 struct devlink *devlink = info->user_ptr[0];
5375 struct sk_buff *msg;
5378 if (!devlink->ops->info_get)
5381 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5385 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
5386 info->snd_portid, info->snd_seq, 0,
5393 return genlmsg_reply(msg, info);
5396 static int devlink_nl_cmd_info_get_dumpit(struct sk_buff *msg,
5397 struct netlink_callback *cb)
5399 struct devlink *devlink;
5400 int start = cb->args[0];
5404 mutex_lock(&devlink_mutex);
5405 list_for_each_entry(devlink, &devlink_list, list) {
5406 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
5413 if (!devlink->ops->info_get) {
5418 mutex_lock(&devlink->lock);
5419 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
5420 NETLINK_CB(cb->skb).portid,
5421 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5423 mutex_unlock(&devlink->lock);
5424 if (err == -EOPNOTSUPP)
5430 mutex_unlock(&devlink_mutex);
5432 if (err != -EMSGSIZE)
5439 struct devlink_fmsg_item {
5440 struct list_head list;
5447 struct devlink_fmsg {
5448 struct list_head item_list;
5449 bool putting_binary; /* This flag forces enclosing of binary data
5450 * in an array brackets. It forces using
5451 * of designated API:
5452 * devlink_fmsg_binary_pair_nest_start()
5453 * devlink_fmsg_binary_pair_nest_end()
5457 static struct devlink_fmsg *devlink_fmsg_alloc(void)
5459 struct devlink_fmsg *fmsg;
5461 fmsg = kzalloc(sizeof(*fmsg), GFP_KERNEL);
5465 INIT_LIST_HEAD(&fmsg->item_list);
5470 static void devlink_fmsg_free(struct devlink_fmsg *fmsg)
5472 struct devlink_fmsg_item *item, *tmp;
5474 list_for_each_entry_safe(item, tmp, &fmsg->item_list, list) {
5475 list_del(&item->list);
5481 static int devlink_fmsg_nest_common(struct devlink_fmsg *fmsg,
5484 struct devlink_fmsg_item *item;
5486 item = kzalloc(sizeof(*item), GFP_KERNEL);
5490 item->attrtype = attrtype;
5491 list_add_tail(&item->list, &fmsg->item_list);
5496 int devlink_fmsg_obj_nest_start(struct devlink_fmsg *fmsg)
5498 if (fmsg->putting_binary)
5501 return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_OBJ_NEST_START);
5503 EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_start);
5505 static int devlink_fmsg_nest_end(struct devlink_fmsg *fmsg)
5507 if (fmsg->putting_binary)
5510 return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_NEST_END);
5513 int devlink_fmsg_obj_nest_end(struct devlink_fmsg *fmsg)
5515 if (fmsg->putting_binary)
5518 return devlink_fmsg_nest_end(fmsg);
5520 EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_end);
5522 #define DEVLINK_FMSG_MAX_SIZE (GENLMSG_DEFAULT_SIZE - GENL_HDRLEN - NLA_HDRLEN)
5524 static int devlink_fmsg_put_name(struct devlink_fmsg *fmsg, const char *name)
5526 struct devlink_fmsg_item *item;
5528 if (fmsg->putting_binary)
5531 if (strlen(name) + 1 > DEVLINK_FMSG_MAX_SIZE)
5534 item = kzalloc(sizeof(*item) + strlen(name) + 1, GFP_KERNEL);
5538 item->nla_type = NLA_NUL_STRING;
5539 item->len = strlen(name) + 1;
5540 item->attrtype = DEVLINK_ATTR_FMSG_OBJ_NAME;
5541 memcpy(&item->value, name, item->len);
5542 list_add_tail(&item->list, &fmsg->item_list);
5547 int devlink_fmsg_pair_nest_start(struct devlink_fmsg *fmsg, const char *name)
5551 if (fmsg->putting_binary)
5554 err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_PAIR_NEST_START);
5558 err = devlink_fmsg_put_name(fmsg, name);
5564 EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_start);
5566 int devlink_fmsg_pair_nest_end(struct devlink_fmsg *fmsg)
5568 if (fmsg->putting_binary)
5571 return devlink_fmsg_nest_end(fmsg);
5573 EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_end);
5575 int devlink_fmsg_arr_pair_nest_start(struct devlink_fmsg *fmsg,
5580 if (fmsg->putting_binary)
5583 err = devlink_fmsg_pair_nest_start(fmsg, name);
5587 err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_ARR_NEST_START);
5593 EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_start);
5595 int devlink_fmsg_arr_pair_nest_end(struct devlink_fmsg *fmsg)
5599 if (fmsg->putting_binary)
5602 err = devlink_fmsg_nest_end(fmsg);
5606 err = devlink_fmsg_nest_end(fmsg);
5612 EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_end);
5614 int devlink_fmsg_binary_pair_nest_start(struct devlink_fmsg *fmsg,
5619 err = devlink_fmsg_arr_pair_nest_start(fmsg, name);
5623 fmsg->putting_binary = true;
5626 EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_start);
5628 int devlink_fmsg_binary_pair_nest_end(struct devlink_fmsg *fmsg)
5630 if (!fmsg->putting_binary)
5633 fmsg->putting_binary = false;
5634 return devlink_fmsg_arr_pair_nest_end(fmsg);
5636 EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_end);
5638 static int devlink_fmsg_put_value(struct devlink_fmsg *fmsg,
5639 const void *value, u16 value_len,
5642 struct devlink_fmsg_item *item;
5644 if (value_len > DEVLINK_FMSG_MAX_SIZE)
5647 item = kzalloc(sizeof(*item) + value_len, GFP_KERNEL);
5651 item->nla_type = value_nla_type;
5652 item->len = value_len;
5653 item->attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
5654 memcpy(&item->value, value, item->len);
5655 list_add_tail(&item->list, &fmsg->item_list);
5660 int devlink_fmsg_bool_put(struct devlink_fmsg *fmsg, bool value)
5662 if (fmsg->putting_binary)
5665 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_FLAG);
5667 EXPORT_SYMBOL_GPL(devlink_fmsg_bool_put);
5669 int devlink_fmsg_u8_put(struct devlink_fmsg *fmsg, u8 value)
5671 if (fmsg->putting_binary)
5674 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U8);
5676 EXPORT_SYMBOL_GPL(devlink_fmsg_u8_put);
5678 int devlink_fmsg_u32_put(struct devlink_fmsg *fmsg, u32 value)
5680 if (fmsg->putting_binary)
5683 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U32);
5685 EXPORT_SYMBOL_GPL(devlink_fmsg_u32_put);
5687 int devlink_fmsg_u64_put(struct devlink_fmsg *fmsg, u64 value)
5689 if (fmsg->putting_binary)
5692 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U64);
5694 EXPORT_SYMBOL_GPL(devlink_fmsg_u64_put);
5696 int devlink_fmsg_string_put(struct devlink_fmsg *fmsg, const char *value)
5698 if (fmsg->putting_binary)
5701 return devlink_fmsg_put_value(fmsg, value, strlen(value) + 1,
5704 EXPORT_SYMBOL_GPL(devlink_fmsg_string_put);
5706 int devlink_fmsg_binary_put(struct devlink_fmsg *fmsg, const void *value,
5709 if (!fmsg->putting_binary)
5712 return devlink_fmsg_put_value(fmsg, value, value_len, NLA_BINARY);
5714 EXPORT_SYMBOL_GPL(devlink_fmsg_binary_put);
5716 int devlink_fmsg_bool_pair_put(struct devlink_fmsg *fmsg, const char *name,
5721 err = devlink_fmsg_pair_nest_start(fmsg, name);
5725 err = devlink_fmsg_bool_put(fmsg, value);
5729 err = devlink_fmsg_pair_nest_end(fmsg);
5735 EXPORT_SYMBOL_GPL(devlink_fmsg_bool_pair_put);
5737 int devlink_fmsg_u8_pair_put(struct devlink_fmsg *fmsg, const char *name,
5742 err = devlink_fmsg_pair_nest_start(fmsg, name);
5746 err = devlink_fmsg_u8_put(fmsg, value);
5750 err = devlink_fmsg_pair_nest_end(fmsg);
5756 EXPORT_SYMBOL_GPL(devlink_fmsg_u8_pair_put);
5758 int devlink_fmsg_u32_pair_put(struct devlink_fmsg *fmsg, const char *name,
5763 err = devlink_fmsg_pair_nest_start(fmsg, name);
5767 err = devlink_fmsg_u32_put(fmsg, value);
5771 err = devlink_fmsg_pair_nest_end(fmsg);
5777 EXPORT_SYMBOL_GPL(devlink_fmsg_u32_pair_put);
5779 int devlink_fmsg_u64_pair_put(struct devlink_fmsg *fmsg, const char *name,
5784 err = devlink_fmsg_pair_nest_start(fmsg, name);
5788 err = devlink_fmsg_u64_put(fmsg, value);
5792 err = devlink_fmsg_pair_nest_end(fmsg);
5798 EXPORT_SYMBOL_GPL(devlink_fmsg_u64_pair_put);
5800 int devlink_fmsg_string_pair_put(struct devlink_fmsg *fmsg, const char *name,
5805 err = devlink_fmsg_pair_nest_start(fmsg, name);
5809 err = devlink_fmsg_string_put(fmsg, value);
5813 err = devlink_fmsg_pair_nest_end(fmsg);
5819 EXPORT_SYMBOL_GPL(devlink_fmsg_string_pair_put);
5821 int devlink_fmsg_binary_pair_put(struct devlink_fmsg *fmsg, const char *name,
5822 const void *value, u32 value_len)
5829 err = devlink_fmsg_binary_pair_nest_start(fmsg, name);
5833 for (offset = 0; offset < value_len; offset += data_size) {
5834 data_size = value_len - offset;
5835 if (data_size > DEVLINK_FMSG_MAX_SIZE)
5836 data_size = DEVLINK_FMSG_MAX_SIZE;
5837 err = devlink_fmsg_binary_put(fmsg, value + offset, data_size);
5840 /* Exit from loop with a break (instead of
5841 * return) to make sure putting_binary is turned off in
5842 * devlink_fmsg_binary_pair_nest_end
5846 end_err = devlink_fmsg_binary_pair_nest_end(fmsg);
5852 EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_put);
5855 devlink_fmsg_item_fill_type(struct devlink_fmsg_item *msg, struct sk_buff *skb)
5857 switch (msg->nla_type) {
5862 case NLA_NUL_STRING:
5864 return nla_put_u8(skb, DEVLINK_ATTR_FMSG_OBJ_VALUE_TYPE,
5872 devlink_fmsg_item_fill_data(struct devlink_fmsg_item *msg, struct sk_buff *skb)
5874 int attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
5877 switch (msg->nla_type) {
5879 /* Always provide flag data, regardless of its value */
5880 tmp = *(bool *) msg->value;
5882 return nla_put_u8(skb, attrtype, tmp);
5884 return nla_put_u8(skb, attrtype, *(u8 *) msg->value);
5886 return nla_put_u32(skb, attrtype, *(u32 *) msg->value);
5888 return nla_put_u64_64bit(skb, attrtype, *(u64 *) msg->value,
5890 case NLA_NUL_STRING:
5891 return nla_put_string(skb, attrtype, (char *) &msg->value);
5893 return nla_put(skb, attrtype, msg->len, (void *) &msg->value);
5900 devlink_fmsg_prepare_skb(struct devlink_fmsg *fmsg, struct sk_buff *skb,
5903 struct devlink_fmsg_item *item;
5904 struct nlattr *fmsg_nlattr;
5908 fmsg_nlattr = nla_nest_start_noflag(skb, DEVLINK_ATTR_FMSG);
5912 list_for_each_entry(item, &fmsg->item_list, list) {
5918 switch (item->attrtype) {
5919 case DEVLINK_ATTR_FMSG_OBJ_NEST_START:
5920 case DEVLINK_ATTR_FMSG_PAIR_NEST_START:
5921 case DEVLINK_ATTR_FMSG_ARR_NEST_START:
5922 case DEVLINK_ATTR_FMSG_NEST_END:
5923 err = nla_put_flag(skb, item->attrtype);
5925 case DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA:
5926 err = devlink_fmsg_item_fill_type(item, skb);
5929 err = devlink_fmsg_item_fill_data(item, skb);
5931 case DEVLINK_ATTR_FMSG_OBJ_NAME:
5932 err = nla_put_string(skb, item->attrtype,
5933 (char *) &item->value);
5945 nla_nest_end(skb, fmsg_nlattr);
5949 static int devlink_fmsg_snd(struct devlink_fmsg *fmsg,
5950 struct genl_info *info,
5951 enum devlink_command cmd, int flags)
5953 struct nlmsghdr *nlh;
5954 struct sk_buff *skb;
5961 int tmp_index = index;
5963 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
5967 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
5968 &devlink_nl_family, flags | NLM_F_MULTI, cmd);
5971 goto nla_put_failure;
5974 err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
5977 else if (err != -EMSGSIZE || tmp_index == index)
5978 goto nla_put_failure;
5980 genlmsg_end(skb, hdr);
5981 err = genlmsg_reply(skb, info);
5986 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
5989 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
5990 NLMSG_DONE, 0, flags | NLM_F_MULTI);
5993 goto nla_put_failure;
5996 return genlmsg_reply(skb, info);
6003 static int devlink_fmsg_dumpit(struct devlink_fmsg *fmsg, struct sk_buff *skb,
6004 struct netlink_callback *cb,
6005 enum devlink_command cmd)
6007 int index = cb->args[0];
6008 int tmp_index = index;
6012 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
6013 &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI, cmd);
6016 goto nla_put_failure;
6019 err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
6020 if ((err && err != -EMSGSIZE) || tmp_index == index)
6021 goto nla_put_failure;
6023 cb->args[0] = index;
6024 genlmsg_end(skb, hdr);
6028 genlmsg_cancel(skb, hdr);
6032 struct devlink_health_reporter {
6033 struct list_head list;
6035 const struct devlink_health_reporter_ops *ops;
6036 struct devlink *devlink;
6037 struct devlink_port *devlink_port;
6038 struct devlink_fmsg *dump_fmsg;
6039 struct mutex dump_lock; /* lock parallel read/write from dump buffers */
6040 u64 graceful_period;
6048 u64 last_recovery_ts;
6049 refcount_t refcount;
6053 devlink_health_reporter_priv(struct devlink_health_reporter *reporter)
6055 return reporter->priv;
6057 EXPORT_SYMBOL_GPL(devlink_health_reporter_priv);
6059 static struct devlink_health_reporter *
6060 __devlink_health_reporter_find_by_name(struct list_head *reporter_list,
6061 struct mutex *list_lock,
6062 const char *reporter_name)
6064 struct devlink_health_reporter *reporter;
6066 lockdep_assert_held(list_lock);
6067 list_for_each_entry(reporter, reporter_list, list)
6068 if (!strcmp(reporter->ops->name, reporter_name))
6073 static struct devlink_health_reporter *
6074 devlink_health_reporter_find_by_name(struct devlink *devlink,
6075 const char *reporter_name)
6077 return __devlink_health_reporter_find_by_name(&devlink->reporter_list,
6078 &devlink->reporters_lock,
6082 static struct devlink_health_reporter *
6083 devlink_port_health_reporter_find_by_name(struct devlink_port *devlink_port,
6084 const char *reporter_name)
6086 return __devlink_health_reporter_find_by_name(&devlink_port->reporter_list,
6087 &devlink_port->reporters_lock,
6091 static struct devlink_health_reporter *
6092 __devlink_health_reporter_create(struct devlink *devlink,
6093 const struct devlink_health_reporter_ops *ops,
6094 u64 graceful_period, void *priv)
6096 struct devlink_health_reporter *reporter;
6098 if (WARN_ON(graceful_period && !ops->recover))
6099 return ERR_PTR(-EINVAL);
6101 reporter = kzalloc(sizeof(*reporter), GFP_KERNEL);
6103 return ERR_PTR(-ENOMEM);
6105 reporter->priv = priv;
6106 reporter->ops = ops;
6107 reporter->devlink = devlink;
6108 reporter->graceful_period = graceful_period;
6109 reporter->auto_recover = !!ops->recover;
6110 reporter->auto_dump = !!ops->dump;
6111 mutex_init(&reporter->dump_lock);
6112 refcount_set(&reporter->refcount, 1);
6117 * devlink_port_health_reporter_create - create devlink health reporter for
6118 * specified port instance
6120 * @port: devlink_port which should contain the new reporter
6122 * @graceful_period: to avoid recovery loops, in msecs
6125 struct devlink_health_reporter *
6126 devlink_port_health_reporter_create(struct devlink_port *port,
6127 const struct devlink_health_reporter_ops *ops,
6128 u64 graceful_period, void *priv)
6130 struct devlink_health_reporter *reporter;
6132 mutex_lock(&port->reporters_lock);
6133 if (__devlink_health_reporter_find_by_name(&port->reporter_list,
6134 &port->reporters_lock, ops->name)) {
6135 reporter = ERR_PTR(-EEXIST);
6139 reporter = __devlink_health_reporter_create(port->devlink, ops,
6140 graceful_period, priv);
6141 if (IS_ERR(reporter))
6144 reporter->devlink_port = port;
6145 list_add_tail(&reporter->list, &port->reporter_list);
6147 mutex_unlock(&port->reporters_lock);
6150 EXPORT_SYMBOL_GPL(devlink_port_health_reporter_create);
6153 * devlink_health_reporter_create - create devlink health reporter
6157 * @graceful_period: to avoid recovery loops, in msecs
6160 struct devlink_health_reporter *
6161 devlink_health_reporter_create(struct devlink *devlink,
6162 const struct devlink_health_reporter_ops *ops,
6163 u64 graceful_period, void *priv)
6165 struct devlink_health_reporter *reporter;
6167 mutex_lock(&devlink->reporters_lock);
6168 if (devlink_health_reporter_find_by_name(devlink, ops->name)) {
6169 reporter = ERR_PTR(-EEXIST);
6173 reporter = __devlink_health_reporter_create(devlink, ops,
6174 graceful_period, priv);
6175 if (IS_ERR(reporter))
6178 list_add_tail(&reporter->list, &devlink->reporter_list);
6180 mutex_unlock(&devlink->reporters_lock);
6183 EXPORT_SYMBOL_GPL(devlink_health_reporter_create);
6186 devlink_health_reporter_free(struct devlink_health_reporter *reporter)
6188 mutex_destroy(&reporter->dump_lock);
6189 if (reporter->dump_fmsg)
6190 devlink_fmsg_free(reporter->dump_fmsg);
6195 devlink_health_reporter_put(struct devlink_health_reporter *reporter)
6197 if (refcount_dec_and_test(&reporter->refcount))
6198 devlink_health_reporter_free(reporter);
6202 __devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
6204 list_del(&reporter->list);
6205 devlink_health_reporter_put(reporter);
6209 * devlink_health_reporter_destroy - destroy devlink health reporter
6211 * @reporter: devlink health reporter to destroy
6214 devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
6216 struct mutex *lock = &reporter->devlink->reporters_lock;
6219 __devlink_health_reporter_destroy(reporter);
6222 EXPORT_SYMBOL_GPL(devlink_health_reporter_destroy);
6225 * devlink_port_health_reporter_destroy - destroy devlink port health reporter
6227 * @reporter: devlink health reporter to destroy
6230 devlink_port_health_reporter_destroy(struct devlink_health_reporter *reporter)
6232 struct mutex *lock = &reporter->devlink_port->reporters_lock;
6235 __devlink_health_reporter_destroy(reporter);
6238 EXPORT_SYMBOL_GPL(devlink_port_health_reporter_destroy);
6241 devlink_nl_health_reporter_fill(struct sk_buff *msg,
6242 struct devlink *devlink,
6243 struct devlink_health_reporter *reporter,
6244 enum devlink_command cmd, u32 portid,
6247 struct nlattr *reporter_attr;
6250 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
6254 if (devlink_nl_put_handle(msg, devlink))
6255 goto genlmsg_cancel;
6257 if (reporter->devlink_port) {
6258 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, reporter->devlink_port->index))
6259 goto genlmsg_cancel;
6261 reporter_attr = nla_nest_start_noflag(msg,
6262 DEVLINK_ATTR_HEALTH_REPORTER);
6264 goto genlmsg_cancel;
6265 if (nla_put_string(msg, DEVLINK_ATTR_HEALTH_REPORTER_NAME,
6266 reporter->ops->name))
6267 goto reporter_nest_cancel;
6268 if (nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_STATE,
6269 reporter->health_state))
6270 goto reporter_nest_cancel;
6271 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_ERR_COUNT,
6272 reporter->error_count, DEVLINK_ATTR_PAD))
6273 goto reporter_nest_cancel;
6274 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_RECOVER_COUNT,
6275 reporter->recovery_count, DEVLINK_ATTR_PAD))
6276 goto reporter_nest_cancel;
6277 if (reporter->ops->recover &&
6278 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD,
6279 reporter->graceful_period,
6281 goto reporter_nest_cancel;
6282 if (reporter->ops->recover &&
6283 nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER,
6284 reporter->auto_recover))
6285 goto reporter_nest_cancel;
6286 if (reporter->dump_fmsg &&
6287 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS,
6288 jiffies_to_msecs(reporter->dump_ts),
6290 goto reporter_nest_cancel;
6291 if (reporter->dump_fmsg &&
6292 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS_NS,
6293 reporter->dump_real_ts, DEVLINK_ATTR_PAD))
6294 goto reporter_nest_cancel;
6295 if (reporter->ops->dump &&
6296 nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP,
6297 reporter->auto_dump))
6298 goto reporter_nest_cancel;
6300 nla_nest_end(msg, reporter_attr);
6301 genlmsg_end(msg, hdr);
6304 reporter_nest_cancel:
6305 nla_nest_end(msg, reporter_attr);
6307 genlmsg_cancel(msg, hdr);
6311 static void devlink_recover_notify(struct devlink_health_reporter *reporter,
6312 enum devlink_command cmd)
6314 struct sk_buff *msg;
6317 WARN_ON(cmd != DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
6319 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6323 err = devlink_nl_health_reporter_fill(msg, reporter->devlink,
6324 reporter, cmd, 0, 0, 0);
6330 genlmsg_multicast_netns(&devlink_nl_family,
6331 devlink_net(reporter->devlink),
6332 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
6336 devlink_health_reporter_recovery_done(struct devlink_health_reporter *reporter)
6338 reporter->recovery_count++;
6339 reporter->last_recovery_ts = jiffies;
6341 EXPORT_SYMBOL_GPL(devlink_health_reporter_recovery_done);
6344 devlink_health_reporter_recover(struct devlink_health_reporter *reporter,
6345 void *priv_ctx, struct netlink_ext_ack *extack)
6349 if (reporter->health_state == DEVLINK_HEALTH_REPORTER_STATE_HEALTHY)
6352 if (!reporter->ops->recover)
6355 err = reporter->ops->recover(reporter, priv_ctx, extack);
6359 devlink_health_reporter_recovery_done(reporter);
6360 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_HEALTHY;
6361 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
6367 devlink_health_dump_clear(struct devlink_health_reporter *reporter)
6369 if (!reporter->dump_fmsg)
6371 devlink_fmsg_free(reporter->dump_fmsg);
6372 reporter->dump_fmsg = NULL;
6375 static int devlink_health_do_dump(struct devlink_health_reporter *reporter,
6377 struct netlink_ext_ack *extack)
6381 if (!reporter->ops->dump)
6384 if (reporter->dump_fmsg)
6387 reporter->dump_fmsg = devlink_fmsg_alloc();
6388 if (!reporter->dump_fmsg) {
6393 err = devlink_fmsg_obj_nest_start(reporter->dump_fmsg);
6397 err = reporter->ops->dump(reporter, reporter->dump_fmsg,
6402 err = devlink_fmsg_obj_nest_end(reporter->dump_fmsg);
6406 reporter->dump_ts = jiffies;
6407 reporter->dump_real_ts = ktime_get_real_ns();
6412 devlink_health_dump_clear(reporter);
6416 int devlink_health_report(struct devlink_health_reporter *reporter,
6417 const char *msg, void *priv_ctx)
6419 enum devlink_health_reporter_state prev_health_state;
6420 struct devlink *devlink = reporter->devlink;
6421 unsigned long recover_ts_threshold;
6423 /* write a log message of the current error */
6425 trace_devlink_health_report(devlink, reporter->ops->name, msg);
6426 reporter->error_count++;
6427 prev_health_state = reporter->health_state;
6428 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
6429 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
6431 /* abort if the previous error wasn't recovered */
6432 recover_ts_threshold = reporter->last_recovery_ts +
6433 msecs_to_jiffies(reporter->graceful_period);
6434 if (reporter->auto_recover &&
6435 (prev_health_state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY ||
6436 (reporter->last_recovery_ts && reporter->recovery_count &&
6437 time_is_after_jiffies(recover_ts_threshold)))) {
6438 trace_devlink_health_recover_aborted(devlink,
6439 reporter->ops->name,
6440 reporter->health_state,
6442 reporter->last_recovery_ts);
6446 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
6448 if (reporter->auto_dump) {
6449 mutex_lock(&reporter->dump_lock);
6450 /* store current dump of current error, for later analysis */
6451 devlink_health_do_dump(reporter, priv_ctx, NULL);
6452 mutex_unlock(&reporter->dump_lock);
6455 if (reporter->auto_recover)
6456 return devlink_health_reporter_recover(reporter,
6461 EXPORT_SYMBOL_GPL(devlink_health_report);
6463 static struct devlink_health_reporter *
6464 devlink_health_reporter_get_from_attrs(struct devlink *devlink,
6465 struct nlattr **attrs)
6467 struct devlink_health_reporter *reporter;
6468 struct devlink_port *devlink_port;
6469 char *reporter_name;
6471 if (!attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME])
6474 reporter_name = nla_data(attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME]);
6475 devlink_port = devlink_port_get_from_attrs(devlink, attrs);
6476 if (IS_ERR(devlink_port)) {
6477 mutex_lock(&devlink->reporters_lock);
6478 reporter = devlink_health_reporter_find_by_name(devlink, reporter_name);
6480 refcount_inc(&reporter->refcount);
6481 mutex_unlock(&devlink->reporters_lock);
6483 mutex_lock(&devlink_port->reporters_lock);
6484 reporter = devlink_port_health_reporter_find_by_name(devlink_port, reporter_name);
6486 refcount_inc(&reporter->refcount);
6487 mutex_unlock(&devlink_port->reporters_lock);
6493 static struct devlink_health_reporter *
6494 devlink_health_reporter_get_from_info(struct devlink *devlink,
6495 struct genl_info *info)
6497 return devlink_health_reporter_get_from_attrs(devlink, info->attrs);
6500 static struct devlink_health_reporter *
6501 devlink_health_reporter_get_from_cb(struct netlink_callback *cb)
6503 const struct genl_dumpit_info *info = genl_dumpit_info(cb);
6504 struct devlink_health_reporter *reporter;
6505 struct nlattr **attrs = info->attrs;
6506 struct devlink *devlink;
6508 mutex_lock(&devlink_mutex);
6509 devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
6510 if (IS_ERR(devlink))
6513 reporter = devlink_health_reporter_get_from_attrs(devlink, attrs);
6514 mutex_unlock(&devlink_mutex);
6517 mutex_unlock(&devlink_mutex);
6522 devlink_health_reporter_state_update(struct devlink_health_reporter *reporter,
6523 enum devlink_health_reporter_state state)
6525 if (WARN_ON(state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY &&
6526 state != DEVLINK_HEALTH_REPORTER_STATE_ERROR))
6529 if (reporter->health_state == state)
6532 reporter->health_state = state;
6533 trace_devlink_health_reporter_state_update(reporter->devlink,
6534 reporter->ops->name, state);
6535 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
6537 EXPORT_SYMBOL_GPL(devlink_health_reporter_state_update);
6539 static int devlink_nl_cmd_health_reporter_get_doit(struct sk_buff *skb,
6540 struct genl_info *info)
6542 struct devlink *devlink = info->user_ptr[0];
6543 struct devlink_health_reporter *reporter;
6544 struct sk_buff *msg;
6547 reporter = devlink_health_reporter_get_from_info(devlink, info);
6551 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6557 err = devlink_nl_health_reporter_fill(msg, devlink, reporter,
6558 DEVLINK_CMD_HEALTH_REPORTER_GET,
6559 info->snd_portid, info->snd_seq,
6566 err = genlmsg_reply(msg, info);
6568 devlink_health_reporter_put(reporter);
6573 devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg,
6574 struct netlink_callback *cb)
6576 struct devlink_health_reporter *reporter;
6577 struct devlink_port *port;
6578 struct devlink *devlink;
6579 int start = cb->args[0];
6583 mutex_lock(&devlink_mutex);
6584 list_for_each_entry(devlink, &devlink_list, list) {
6585 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
6587 mutex_lock(&devlink->reporters_lock);
6588 list_for_each_entry(reporter, &devlink->reporter_list,
6594 err = devlink_nl_health_reporter_fill(msg, devlink,
6596 DEVLINK_CMD_HEALTH_REPORTER_GET,
6597 NETLINK_CB(cb->skb).portid,
6601 mutex_unlock(&devlink->reporters_lock);
6606 mutex_unlock(&devlink->reporters_lock);
6609 list_for_each_entry(devlink, &devlink_list, list) {
6610 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
6612 mutex_lock(&devlink->lock);
6613 list_for_each_entry(port, &devlink->port_list, list) {
6614 mutex_lock(&port->reporters_lock);
6615 list_for_each_entry(reporter, &port->reporter_list, list) {
6620 err = devlink_nl_health_reporter_fill(msg, devlink, reporter,
6621 DEVLINK_CMD_HEALTH_REPORTER_GET,
6622 NETLINK_CB(cb->skb).portid,
6626 mutex_unlock(&port->reporters_lock);
6627 mutex_unlock(&devlink->lock);
6632 mutex_unlock(&port->reporters_lock);
6634 mutex_unlock(&devlink->lock);
6637 mutex_unlock(&devlink_mutex);
6644 devlink_nl_cmd_health_reporter_set_doit(struct sk_buff *skb,
6645 struct genl_info *info)
6647 struct devlink *devlink = info->user_ptr[0];
6648 struct devlink_health_reporter *reporter;
6651 reporter = devlink_health_reporter_get_from_info(devlink, info);
6655 if (!reporter->ops->recover &&
6656 (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] ||
6657 info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])) {
6661 if (!reporter->ops->dump &&
6662 info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]) {
6667 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD])
6668 reporter->graceful_period =
6669 nla_get_u64(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD]);
6671 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])
6672 reporter->auto_recover =
6673 nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER]);
6675 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP])
6676 reporter->auto_dump =
6677 nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]);
6679 devlink_health_reporter_put(reporter);
6682 devlink_health_reporter_put(reporter);
6686 static int devlink_nl_cmd_health_reporter_recover_doit(struct sk_buff *skb,
6687 struct genl_info *info)
6689 struct devlink *devlink = info->user_ptr[0];
6690 struct devlink_health_reporter *reporter;
6693 reporter = devlink_health_reporter_get_from_info(devlink, info);
6697 err = devlink_health_reporter_recover(reporter, NULL, info->extack);
6699 devlink_health_reporter_put(reporter);
6703 static int devlink_nl_cmd_health_reporter_diagnose_doit(struct sk_buff *skb,
6704 struct genl_info *info)
6706 struct devlink *devlink = info->user_ptr[0];
6707 struct devlink_health_reporter *reporter;
6708 struct devlink_fmsg *fmsg;
6711 reporter = devlink_health_reporter_get_from_info(devlink, info);
6715 if (!reporter->ops->diagnose) {
6716 devlink_health_reporter_put(reporter);
6720 fmsg = devlink_fmsg_alloc();
6722 devlink_health_reporter_put(reporter);
6726 err = devlink_fmsg_obj_nest_start(fmsg);
6730 err = reporter->ops->diagnose(reporter, fmsg, info->extack);
6734 err = devlink_fmsg_obj_nest_end(fmsg);
6738 err = devlink_fmsg_snd(fmsg, info,
6739 DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE, 0);
6742 devlink_fmsg_free(fmsg);
6743 devlink_health_reporter_put(reporter);
6748 devlink_nl_cmd_health_reporter_dump_get_dumpit(struct sk_buff *skb,
6749 struct netlink_callback *cb)
6751 struct devlink_health_reporter *reporter;
6752 u64 start = cb->args[0];
6755 reporter = devlink_health_reporter_get_from_cb(cb);
6759 if (!reporter->ops->dump) {
6763 mutex_lock(&reporter->dump_lock);
6765 err = devlink_health_do_dump(reporter, NULL, cb->extack);
6768 cb->args[1] = reporter->dump_ts;
6770 if (!reporter->dump_fmsg || cb->args[1] != reporter->dump_ts) {
6771 NL_SET_ERR_MSG_MOD(cb->extack, "Dump trampled, please retry");
6776 err = devlink_fmsg_dumpit(reporter->dump_fmsg, skb, cb,
6777 DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET);
6779 mutex_unlock(&reporter->dump_lock);
6781 devlink_health_reporter_put(reporter);
6786 devlink_nl_cmd_health_reporter_dump_clear_doit(struct sk_buff *skb,
6787 struct genl_info *info)
6789 struct devlink *devlink = info->user_ptr[0];
6790 struct devlink_health_reporter *reporter;
6792 reporter = devlink_health_reporter_get_from_info(devlink, info);
6796 if (!reporter->ops->dump) {
6797 devlink_health_reporter_put(reporter);
6801 mutex_lock(&reporter->dump_lock);
6802 devlink_health_dump_clear(reporter);
6803 mutex_unlock(&reporter->dump_lock);
6804 devlink_health_reporter_put(reporter);
6808 static int devlink_nl_cmd_health_reporter_test_doit(struct sk_buff *skb,
6809 struct genl_info *info)
6811 struct devlink *devlink = info->user_ptr[0];
6812 struct devlink_health_reporter *reporter;
6815 reporter = devlink_health_reporter_get_from_info(devlink, info);
6819 if (!reporter->ops->test) {
6820 devlink_health_reporter_put(reporter);
6824 err = reporter->ops->test(reporter, info->extack);
6826 devlink_health_reporter_put(reporter);
6830 struct devlink_stats {
6833 struct u64_stats_sync syncp;
6837 * struct devlink_trap_policer_item - Packet trap policer attributes.
6838 * @policer: Immutable packet trap policer attributes.
6839 * @rate: Rate in packets / sec.
6840 * @burst: Burst size in packets.
6841 * @list: trap_policer_list member.
6843 * Describes packet trap policer attributes. Created by devlink during trap
6844 * policer registration.
6846 struct devlink_trap_policer_item {
6847 const struct devlink_trap_policer *policer;
6850 struct list_head list;
6854 * struct devlink_trap_group_item - Packet trap group attributes.
6855 * @group: Immutable packet trap group attributes.
6856 * @policer_item: Associated policer item. Can be NULL.
6857 * @list: trap_group_list member.
6858 * @stats: Trap group statistics.
6860 * Describes packet trap group attributes. Created by devlink during trap
6861 * group registration.
6863 struct devlink_trap_group_item {
6864 const struct devlink_trap_group *group;
6865 struct devlink_trap_policer_item *policer_item;
6866 struct list_head list;
6867 struct devlink_stats __percpu *stats;
6871 * struct devlink_trap_item - Packet trap attributes.
6872 * @trap: Immutable packet trap attributes.
6873 * @group_item: Associated group item.
6874 * @list: trap_list member.
6875 * @action: Trap action.
6876 * @stats: Trap statistics.
6877 * @priv: Driver private information.
6879 * Describes both mutable and immutable packet trap attributes. Created by
6880 * devlink during trap registration and used for all trap related operations.
6882 struct devlink_trap_item {
6883 const struct devlink_trap *trap;
6884 struct devlink_trap_group_item *group_item;
6885 struct list_head list;
6886 enum devlink_trap_action action;
6887 struct devlink_stats __percpu *stats;
6891 static struct devlink_trap_policer_item *
6892 devlink_trap_policer_item_lookup(struct devlink *devlink, u32 id)
6894 struct devlink_trap_policer_item *policer_item;
6896 list_for_each_entry(policer_item, &devlink->trap_policer_list, list) {
6897 if (policer_item->policer->id == id)
6898 return policer_item;
6904 static struct devlink_trap_item *
6905 devlink_trap_item_lookup(struct devlink *devlink, const char *name)
6907 struct devlink_trap_item *trap_item;
6909 list_for_each_entry(trap_item, &devlink->trap_list, list) {
6910 if (!strcmp(trap_item->trap->name, name))
6917 static struct devlink_trap_item *
6918 devlink_trap_item_get_from_info(struct devlink *devlink,
6919 struct genl_info *info)
6921 struct nlattr *attr;
6923 if (!info->attrs[DEVLINK_ATTR_TRAP_NAME])
6925 attr = info->attrs[DEVLINK_ATTR_TRAP_NAME];
6927 return devlink_trap_item_lookup(devlink, nla_data(attr));
6931 devlink_trap_action_get_from_info(struct genl_info *info,
6932 enum devlink_trap_action *p_trap_action)
6936 val = nla_get_u8(info->attrs[DEVLINK_ATTR_TRAP_ACTION]);
6938 case DEVLINK_TRAP_ACTION_DROP:
6939 case DEVLINK_TRAP_ACTION_TRAP:
6940 case DEVLINK_TRAP_ACTION_MIRROR:
6941 *p_trap_action = val;
6950 static int devlink_trap_metadata_put(struct sk_buff *msg,
6951 const struct devlink_trap *trap)
6953 struct nlattr *attr;
6955 attr = nla_nest_start(msg, DEVLINK_ATTR_TRAP_METADATA);
6959 if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_IN_PORT) &&
6960 nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_IN_PORT))
6961 goto nla_put_failure;
6962 if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_FA_COOKIE) &&
6963 nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_FA_COOKIE))
6964 goto nla_put_failure;
6966 nla_nest_end(msg, attr);
6971 nla_nest_cancel(msg, attr);
6975 static void devlink_trap_stats_read(struct devlink_stats __percpu *trap_stats,
6976 struct devlink_stats *stats)
6980 memset(stats, 0, sizeof(*stats));
6981 for_each_possible_cpu(i) {
6982 struct devlink_stats *cpu_stats;
6983 u64 rx_packets, rx_bytes;
6986 cpu_stats = per_cpu_ptr(trap_stats, i);
6988 start = u64_stats_fetch_begin_irq(&cpu_stats->syncp);
6989 rx_packets = cpu_stats->rx_packets;
6990 rx_bytes = cpu_stats->rx_bytes;
6991 } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start));
6993 stats->rx_packets += rx_packets;
6994 stats->rx_bytes += rx_bytes;
6998 static int devlink_trap_stats_put(struct sk_buff *msg,
6999 struct devlink_stats __percpu *trap_stats)
7001 struct devlink_stats stats;
7002 struct nlattr *attr;
7004 devlink_trap_stats_read(trap_stats, &stats);
7006 attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
7010 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_PACKETS,
7011 stats.rx_packets, DEVLINK_ATTR_PAD))
7012 goto nla_put_failure;
7014 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_BYTES,
7015 stats.rx_bytes, DEVLINK_ATTR_PAD))
7016 goto nla_put_failure;
7018 nla_nest_end(msg, attr);
7023 nla_nest_cancel(msg, attr);
7027 static int devlink_nl_trap_fill(struct sk_buff *msg, struct devlink *devlink,
7028 const struct devlink_trap_item *trap_item,
7029 enum devlink_command cmd, u32 portid, u32 seq,
7032 struct devlink_trap_group_item *group_item = trap_item->group_item;
7036 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
7040 if (devlink_nl_put_handle(msg, devlink))
7041 goto nla_put_failure;
7043 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
7044 group_item->group->name))
7045 goto nla_put_failure;
7047 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_NAME, trap_item->trap->name))
7048 goto nla_put_failure;
7050 if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_TYPE, trap_item->trap->type))
7051 goto nla_put_failure;
7053 if (trap_item->trap->generic &&
7054 nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
7055 goto nla_put_failure;
7057 if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_ACTION, trap_item->action))
7058 goto nla_put_failure;
7060 err = devlink_trap_metadata_put(msg, trap_item->trap);
7062 goto nla_put_failure;
7064 err = devlink_trap_stats_put(msg, trap_item->stats);
7066 goto nla_put_failure;
7068 genlmsg_end(msg, hdr);
7073 genlmsg_cancel(msg, hdr);
7077 static int devlink_nl_cmd_trap_get_doit(struct sk_buff *skb,
7078 struct genl_info *info)
7080 struct netlink_ext_ack *extack = info->extack;
7081 struct devlink *devlink = info->user_ptr[0];
7082 struct devlink_trap_item *trap_item;
7083 struct sk_buff *msg;
7086 if (list_empty(&devlink->trap_list))
7089 trap_item = devlink_trap_item_get_from_info(devlink, info);
7091 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
7095 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7099 err = devlink_nl_trap_fill(msg, devlink, trap_item,
7100 DEVLINK_CMD_TRAP_NEW, info->snd_portid,
7105 return genlmsg_reply(msg, info);
7112 static int devlink_nl_cmd_trap_get_dumpit(struct sk_buff *msg,
7113 struct netlink_callback *cb)
7115 struct devlink_trap_item *trap_item;
7116 struct devlink *devlink;
7117 int start = cb->args[0];
7121 mutex_lock(&devlink_mutex);
7122 list_for_each_entry(devlink, &devlink_list, list) {
7123 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
7125 mutex_lock(&devlink->lock);
7126 list_for_each_entry(trap_item, &devlink->trap_list, list) {
7131 err = devlink_nl_trap_fill(msg, devlink, trap_item,
7132 DEVLINK_CMD_TRAP_NEW,
7133 NETLINK_CB(cb->skb).portid,
7137 mutex_unlock(&devlink->lock);
7142 mutex_unlock(&devlink->lock);
7145 mutex_unlock(&devlink_mutex);
7151 static int __devlink_trap_action_set(struct devlink *devlink,
7152 struct devlink_trap_item *trap_item,
7153 enum devlink_trap_action trap_action,
7154 struct netlink_ext_ack *extack)
7158 if (trap_item->action != trap_action &&
7159 trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP) {
7160 NL_SET_ERR_MSG_MOD(extack, "Cannot change action of non-drop traps. Skipping");
7164 err = devlink->ops->trap_action_set(devlink, trap_item->trap,
7165 trap_action, extack);
7169 trap_item->action = trap_action;
7174 static int devlink_trap_action_set(struct devlink *devlink,
7175 struct devlink_trap_item *trap_item,
7176 struct genl_info *info)
7178 enum devlink_trap_action trap_action;
7181 if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
7184 err = devlink_trap_action_get_from_info(info, &trap_action);
7186 NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
7190 return __devlink_trap_action_set(devlink, trap_item, trap_action,
7194 static int devlink_nl_cmd_trap_set_doit(struct sk_buff *skb,
7195 struct genl_info *info)
7197 struct netlink_ext_ack *extack = info->extack;
7198 struct devlink *devlink = info->user_ptr[0];
7199 struct devlink_trap_item *trap_item;
7201 if (list_empty(&devlink->trap_list))
7204 trap_item = devlink_trap_item_get_from_info(devlink, info);
7206 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
7210 return devlink_trap_action_set(devlink, trap_item, info);
7213 static struct devlink_trap_group_item *
7214 devlink_trap_group_item_lookup(struct devlink *devlink, const char *name)
7216 struct devlink_trap_group_item *group_item;
7218 list_for_each_entry(group_item, &devlink->trap_group_list, list) {
7219 if (!strcmp(group_item->group->name, name))
7226 static struct devlink_trap_group_item *
7227 devlink_trap_group_item_lookup_by_id(struct devlink *devlink, u16 id)
7229 struct devlink_trap_group_item *group_item;
7231 list_for_each_entry(group_item, &devlink->trap_group_list, list) {
7232 if (group_item->group->id == id)
7239 static struct devlink_trap_group_item *
7240 devlink_trap_group_item_get_from_info(struct devlink *devlink,
7241 struct genl_info *info)
7245 if (!info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME])
7247 name = nla_data(info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME]);
7249 return devlink_trap_group_item_lookup(devlink, name);
7253 devlink_nl_trap_group_fill(struct sk_buff *msg, struct devlink *devlink,
7254 const struct devlink_trap_group_item *group_item,
7255 enum devlink_command cmd, u32 portid, u32 seq,
7261 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
7265 if (devlink_nl_put_handle(msg, devlink))
7266 goto nla_put_failure;
7268 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
7269 group_item->group->name))
7270 goto nla_put_failure;
7272 if (group_item->group->generic &&
7273 nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
7274 goto nla_put_failure;
7276 if (group_item->policer_item &&
7277 nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID,
7278 group_item->policer_item->policer->id))
7279 goto nla_put_failure;
7281 err = devlink_trap_stats_put(msg, group_item->stats);
7283 goto nla_put_failure;
7285 genlmsg_end(msg, hdr);
7290 genlmsg_cancel(msg, hdr);
7294 static int devlink_nl_cmd_trap_group_get_doit(struct sk_buff *skb,
7295 struct genl_info *info)
7297 struct netlink_ext_ack *extack = info->extack;
7298 struct devlink *devlink = info->user_ptr[0];
7299 struct devlink_trap_group_item *group_item;
7300 struct sk_buff *msg;
7303 if (list_empty(&devlink->trap_group_list))
7306 group_item = devlink_trap_group_item_get_from_info(devlink, info);
7308 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
7312 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7316 err = devlink_nl_trap_group_fill(msg, devlink, group_item,
7317 DEVLINK_CMD_TRAP_GROUP_NEW,
7318 info->snd_portid, info->snd_seq, 0);
7320 goto err_trap_group_fill;
7322 return genlmsg_reply(msg, info);
7324 err_trap_group_fill:
7329 static int devlink_nl_cmd_trap_group_get_dumpit(struct sk_buff *msg,
7330 struct netlink_callback *cb)
7332 enum devlink_command cmd = DEVLINK_CMD_TRAP_GROUP_NEW;
7333 struct devlink_trap_group_item *group_item;
7334 u32 portid = NETLINK_CB(cb->skb).portid;
7335 struct devlink *devlink;
7336 int start = cb->args[0];
7340 mutex_lock(&devlink_mutex);
7341 list_for_each_entry(devlink, &devlink_list, list) {
7342 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
7344 mutex_lock(&devlink->lock);
7345 list_for_each_entry(group_item, &devlink->trap_group_list,
7351 err = devlink_nl_trap_group_fill(msg, devlink,
7357 mutex_unlock(&devlink->lock);
7362 mutex_unlock(&devlink->lock);
7365 mutex_unlock(&devlink_mutex);
7372 __devlink_trap_group_action_set(struct devlink *devlink,
7373 struct devlink_trap_group_item *group_item,
7374 enum devlink_trap_action trap_action,
7375 struct netlink_ext_ack *extack)
7377 const char *group_name = group_item->group->name;
7378 struct devlink_trap_item *trap_item;
7381 if (devlink->ops->trap_group_action_set) {
7382 err = devlink->ops->trap_group_action_set(devlink, group_item->group,
7383 trap_action, extack);
7387 list_for_each_entry(trap_item, &devlink->trap_list, list) {
7388 if (strcmp(trap_item->group_item->group->name, group_name))
7390 if (trap_item->action != trap_action &&
7391 trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP)
7393 trap_item->action = trap_action;
7399 list_for_each_entry(trap_item, &devlink->trap_list, list) {
7400 if (strcmp(trap_item->group_item->group->name, group_name))
7402 err = __devlink_trap_action_set(devlink, trap_item,
7403 trap_action, extack);
7412 devlink_trap_group_action_set(struct devlink *devlink,
7413 struct devlink_trap_group_item *group_item,
7414 struct genl_info *info, bool *p_modified)
7416 enum devlink_trap_action trap_action;
7419 if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
7422 err = devlink_trap_action_get_from_info(info, &trap_action);
7424 NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
7428 err = __devlink_trap_group_action_set(devlink, group_item, trap_action,
7438 static int devlink_trap_group_set(struct devlink *devlink,
7439 struct devlink_trap_group_item *group_item,
7440 struct genl_info *info)
7442 struct devlink_trap_policer_item *policer_item;
7443 struct netlink_ext_ack *extack = info->extack;
7444 const struct devlink_trap_policer *policer;
7445 struct nlattr **attrs = info->attrs;
7448 if (!attrs[DEVLINK_ATTR_TRAP_POLICER_ID])
7451 if (!devlink->ops->trap_group_set)
7454 policer_item = group_item->policer_item;
7455 if (attrs[DEVLINK_ATTR_TRAP_POLICER_ID]) {
7458 policer_id = nla_get_u32(attrs[DEVLINK_ATTR_TRAP_POLICER_ID]);
7459 policer_item = devlink_trap_policer_item_lookup(devlink,
7461 if (policer_id && !policer_item) {
7462 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
7466 policer = policer_item ? policer_item->policer : NULL;
7468 err = devlink->ops->trap_group_set(devlink, group_item->group, policer,
7473 group_item->policer_item = policer_item;
7478 static int devlink_nl_cmd_trap_group_set_doit(struct sk_buff *skb,
7479 struct genl_info *info)
7481 struct netlink_ext_ack *extack = info->extack;
7482 struct devlink *devlink = info->user_ptr[0];
7483 struct devlink_trap_group_item *group_item;
7484 bool modified = false;
7487 if (list_empty(&devlink->trap_group_list))
7490 group_item = devlink_trap_group_item_get_from_info(devlink, info);
7492 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
7496 err = devlink_trap_group_action_set(devlink, group_item, info,
7501 err = devlink_trap_group_set(devlink, group_item, info);
7503 goto err_trap_group_set;
7509 NL_SET_ERR_MSG_MOD(extack, "Trap group set failed, but some changes were committed already");
7513 static struct devlink_trap_policer_item *
7514 devlink_trap_policer_item_get_from_info(struct devlink *devlink,
7515 struct genl_info *info)
7519 if (!info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID])
7521 id = nla_get_u32(info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID]);
7523 return devlink_trap_policer_item_lookup(devlink, id);
7527 devlink_trap_policer_stats_put(struct sk_buff *msg, struct devlink *devlink,
7528 const struct devlink_trap_policer *policer)
7530 struct nlattr *attr;
7534 if (!devlink->ops->trap_policer_counter_get)
7537 err = devlink->ops->trap_policer_counter_get(devlink, policer, &drops);
7541 attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
7545 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_DROPPED, drops,
7547 goto nla_put_failure;
7549 nla_nest_end(msg, attr);
7554 nla_nest_cancel(msg, attr);
7559 devlink_nl_trap_policer_fill(struct sk_buff *msg, struct devlink *devlink,
7560 const struct devlink_trap_policer_item *policer_item,
7561 enum devlink_command cmd, u32 portid, u32 seq,
7567 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
7571 if (devlink_nl_put_handle(msg, devlink))
7572 goto nla_put_failure;
7574 if (nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID,
7575 policer_item->policer->id))
7576 goto nla_put_failure;
7578 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_RATE,
7579 policer_item->rate, DEVLINK_ATTR_PAD))
7580 goto nla_put_failure;
7582 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_BURST,
7583 policer_item->burst, DEVLINK_ATTR_PAD))
7584 goto nla_put_failure;
7586 err = devlink_trap_policer_stats_put(msg, devlink,
7587 policer_item->policer);
7589 goto nla_put_failure;
7591 genlmsg_end(msg, hdr);
7596 genlmsg_cancel(msg, hdr);
7600 static int devlink_nl_cmd_trap_policer_get_doit(struct sk_buff *skb,
7601 struct genl_info *info)
7603 struct devlink_trap_policer_item *policer_item;
7604 struct netlink_ext_ack *extack = info->extack;
7605 struct devlink *devlink = info->user_ptr[0];
7606 struct sk_buff *msg;
7609 if (list_empty(&devlink->trap_policer_list))
7612 policer_item = devlink_trap_policer_item_get_from_info(devlink, info);
7613 if (!policer_item) {
7614 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
7618 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7622 err = devlink_nl_trap_policer_fill(msg, devlink, policer_item,
7623 DEVLINK_CMD_TRAP_POLICER_NEW,
7624 info->snd_portid, info->snd_seq, 0);
7626 goto err_trap_policer_fill;
7628 return genlmsg_reply(msg, info);
7630 err_trap_policer_fill:
7635 static int devlink_nl_cmd_trap_policer_get_dumpit(struct sk_buff *msg,
7636 struct netlink_callback *cb)
7638 enum devlink_command cmd = DEVLINK_CMD_TRAP_POLICER_NEW;
7639 struct devlink_trap_policer_item *policer_item;
7640 u32 portid = NETLINK_CB(cb->skb).portid;
7641 struct devlink *devlink;
7642 int start = cb->args[0];
7646 mutex_lock(&devlink_mutex);
7647 list_for_each_entry(devlink, &devlink_list, list) {
7648 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
7650 mutex_lock(&devlink->lock);
7651 list_for_each_entry(policer_item, &devlink->trap_policer_list,
7657 err = devlink_nl_trap_policer_fill(msg, devlink,
7663 mutex_unlock(&devlink->lock);
7668 mutex_unlock(&devlink->lock);
7671 mutex_unlock(&devlink_mutex);
7678 devlink_trap_policer_set(struct devlink *devlink,
7679 struct devlink_trap_policer_item *policer_item,
7680 struct genl_info *info)
7682 struct netlink_ext_ack *extack = info->extack;
7683 struct nlattr **attrs = info->attrs;
7687 rate = policer_item->rate;
7688 burst = policer_item->burst;
7690 if (attrs[DEVLINK_ATTR_TRAP_POLICER_RATE])
7691 rate = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_RATE]);
7693 if (attrs[DEVLINK_ATTR_TRAP_POLICER_BURST])
7694 burst = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_BURST]);
7696 if (rate < policer_item->policer->min_rate) {
7697 NL_SET_ERR_MSG_MOD(extack, "Policer rate lower than limit");
7701 if (rate > policer_item->policer->max_rate) {
7702 NL_SET_ERR_MSG_MOD(extack, "Policer rate higher than limit");
7706 if (burst < policer_item->policer->min_burst) {
7707 NL_SET_ERR_MSG_MOD(extack, "Policer burst size lower than limit");
7711 if (burst > policer_item->policer->max_burst) {
7712 NL_SET_ERR_MSG_MOD(extack, "Policer burst size higher than limit");
7716 err = devlink->ops->trap_policer_set(devlink, policer_item->policer,
7717 rate, burst, info->extack);
7721 policer_item->rate = rate;
7722 policer_item->burst = burst;
7727 static int devlink_nl_cmd_trap_policer_set_doit(struct sk_buff *skb,
7728 struct genl_info *info)
7730 struct devlink_trap_policer_item *policer_item;
7731 struct netlink_ext_ack *extack = info->extack;
7732 struct devlink *devlink = info->user_ptr[0];
7734 if (list_empty(&devlink->trap_policer_list))
7737 if (!devlink->ops->trap_policer_set)
7740 policer_item = devlink_trap_policer_item_get_from_info(devlink, info);
7741 if (!policer_item) {
7742 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
7746 return devlink_trap_policer_set(devlink, policer_item, info);
7749 static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = {
7750 [DEVLINK_ATTR_UNSPEC] = { .strict_start_type =
7751 DEVLINK_ATTR_TRAP_POLICER_ID },
7752 [DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING },
7753 [DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING },
7754 [DEVLINK_ATTR_PORT_INDEX] = { .type = NLA_U32 },
7755 [DEVLINK_ATTR_PORT_TYPE] = NLA_POLICY_RANGE(NLA_U16, DEVLINK_PORT_TYPE_AUTO,
7756 DEVLINK_PORT_TYPE_IB),
7757 [DEVLINK_ATTR_PORT_SPLIT_COUNT] = { .type = NLA_U32 },
7758 [DEVLINK_ATTR_SB_INDEX] = { .type = NLA_U32 },
7759 [DEVLINK_ATTR_SB_POOL_INDEX] = { .type = NLA_U16 },
7760 [DEVLINK_ATTR_SB_POOL_TYPE] = { .type = NLA_U8 },
7761 [DEVLINK_ATTR_SB_POOL_SIZE] = { .type = NLA_U32 },
7762 [DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE] = { .type = NLA_U8 },
7763 [DEVLINK_ATTR_SB_THRESHOLD] = { .type = NLA_U32 },
7764 [DEVLINK_ATTR_SB_TC_INDEX] = { .type = NLA_U16 },
7765 [DEVLINK_ATTR_ESWITCH_MODE] = NLA_POLICY_RANGE(NLA_U16, DEVLINK_ESWITCH_MODE_LEGACY,
7766 DEVLINK_ESWITCH_MODE_SWITCHDEV),
7767 [DEVLINK_ATTR_ESWITCH_INLINE_MODE] = { .type = NLA_U8 },
7768 [DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = { .type = NLA_U8 },
7769 [DEVLINK_ATTR_DPIPE_TABLE_NAME] = { .type = NLA_NUL_STRING },
7770 [DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED] = { .type = NLA_U8 },
7771 [DEVLINK_ATTR_RESOURCE_ID] = { .type = NLA_U64},
7772 [DEVLINK_ATTR_RESOURCE_SIZE] = { .type = NLA_U64},
7773 [DEVLINK_ATTR_PARAM_NAME] = { .type = NLA_NUL_STRING },
7774 [DEVLINK_ATTR_PARAM_TYPE] = { .type = NLA_U8 },
7775 [DEVLINK_ATTR_PARAM_VALUE_CMODE] = { .type = NLA_U8 },
7776 [DEVLINK_ATTR_REGION_NAME] = { .type = NLA_NUL_STRING },
7777 [DEVLINK_ATTR_REGION_SNAPSHOT_ID] = { .type = NLA_U32 },
7778 [DEVLINK_ATTR_REGION_CHUNK_ADDR] = { .type = NLA_U64 },
7779 [DEVLINK_ATTR_REGION_CHUNK_LEN] = { .type = NLA_U64 },
7780 [DEVLINK_ATTR_HEALTH_REPORTER_NAME] = { .type = NLA_NUL_STRING },
7781 [DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] = { .type = NLA_U64 },
7782 [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER] = { .type = NLA_U8 },
7783 [DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME] = { .type = NLA_NUL_STRING },
7784 [DEVLINK_ATTR_FLASH_UPDATE_COMPONENT] = { .type = NLA_NUL_STRING },
7785 [DEVLINK_ATTR_FLASH_UPDATE_OVERWRITE_MASK] =
7786 NLA_POLICY_BITFIELD32(DEVLINK_SUPPORTED_FLASH_OVERWRITE_SECTIONS),
7787 [DEVLINK_ATTR_TRAP_NAME] = { .type = NLA_NUL_STRING },
7788 [DEVLINK_ATTR_TRAP_ACTION] = { .type = NLA_U8 },
7789 [DEVLINK_ATTR_TRAP_GROUP_NAME] = { .type = NLA_NUL_STRING },
7790 [DEVLINK_ATTR_NETNS_PID] = { .type = NLA_U32 },
7791 [DEVLINK_ATTR_NETNS_FD] = { .type = NLA_U32 },
7792 [DEVLINK_ATTR_NETNS_ID] = { .type = NLA_U32 },
7793 [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP] = { .type = NLA_U8 },
7794 [DEVLINK_ATTR_TRAP_POLICER_ID] = { .type = NLA_U32 },
7795 [DEVLINK_ATTR_TRAP_POLICER_RATE] = { .type = NLA_U64 },
7796 [DEVLINK_ATTR_TRAP_POLICER_BURST] = { .type = NLA_U64 },
7797 [DEVLINK_ATTR_PORT_FUNCTION] = { .type = NLA_NESTED },
7798 [DEVLINK_ATTR_RELOAD_ACTION] = NLA_POLICY_RANGE(NLA_U8, DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
7799 DEVLINK_RELOAD_ACTION_MAX),
7800 [DEVLINK_ATTR_RELOAD_LIMITS] = NLA_POLICY_BITFIELD32(DEVLINK_RELOAD_LIMITS_VALID_MASK),
7801 [DEVLINK_ATTR_PORT_FLAVOUR] = { .type = NLA_U16 },
7802 [DEVLINK_ATTR_PORT_PCI_PF_NUMBER] = { .type = NLA_U16 },
7803 [DEVLINK_ATTR_PORT_PCI_SF_NUMBER] = { .type = NLA_U32 },
7804 [DEVLINK_ATTR_PORT_CONTROLLER_NUMBER] = { .type = NLA_U32 },
7807 static const struct genl_small_ops devlink_nl_ops[] = {
7809 .cmd = DEVLINK_CMD_GET,
7810 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7811 .doit = devlink_nl_cmd_get_doit,
7812 .dumpit = devlink_nl_cmd_get_dumpit,
7813 /* can be retrieved by unprivileged users */
7816 .cmd = DEVLINK_CMD_PORT_GET,
7817 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7818 .doit = devlink_nl_cmd_port_get_doit,
7819 .dumpit = devlink_nl_cmd_port_get_dumpit,
7820 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
7821 /* can be retrieved by unprivileged users */
7824 .cmd = DEVLINK_CMD_PORT_SET,
7825 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7826 .doit = devlink_nl_cmd_port_set_doit,
7827 .flags = GENL_ADMIN_PERM,
7828 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
7831 .cmd = DEVLINK_CMD_PORT_SPLIT,
7832 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7833 .doit = devlink_nl_cmd_port_split_doit,
7834 .flags = GENL_ADMIN_PERM,
7835 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
7838 .cmd = DEVLINK_CMD_PORT_UNSPLIT,
7839 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7840 .doit = devlink_nl_cmd_port_unsplit_doit,
7841 .flags = GENL_ADMIN_PERM,
7842 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
7845 .cmd = DEVLINK_CMD_PORT_NEW,
7846 .doit = devlink_nl_cmd_port_new_doit,
7847 .flags = GENL_ADMIN_PERM,
7848 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
7851 .cmd = DEVLINK_CMD_PORT_DEL,
7852 .doit = devlink_nl_cmd_port_del_doit,
7853 .flags = GENL_ADMIN_PERM,
7854 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
7857 .cmd = DEVLINK_CMD_SB_GET,
7858 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7859 .doit = devlink_nl_cmd_sb_get_doit,
7860 .dumpit = devlink_nl_cmd_sb_get_dumpit,
7861 /* can be retrieved by unprivileged users */
7864 .cmd = DEVLINK_CMD_SB_POOL_GET,
7865 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7866 .doit = devlink_nl_cmd_sb_pool_get_doit,
7867 .dumpit = devlink_nl_cmd_sb_pool_get_dumpit,
7868 /* can be retrieved by unprivileged users */
7871 .cmd = DEVLINK_CMD_SB_POOL_SET,
7872 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7873 .doit = devlink_nl_cmd_sb_pool_set_doit,
7874 .flags = GENL_ADMIN_PERM,
7877 .cmd = DEVLINK_CMD_SB_PORT_POOL_GET,
7878 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7879 .doit = devlink_nl_cmd_sb_port_pool_get_doit,
7880 .dumpit = devlink_nl_cmd_sb_port_pool_get_dumpit,
7881 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
7882 /* can be retrieved by unprivileged users */
7885 .cmd = DEVLINK_CMD_SB_PORT_POOL_SET,
7886 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7887 .doit = devlink_nl_cmd_sb_port_pool_set_doit,
7888 .flags = GENL_ADMIN_PERM,
7889 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
7892 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_GET,
7893 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7894 .doit = devlink_nl_cmd_sb_tc_pool_bind_get_doit,
7895 .dumpit = devlink_nl_cmd_sb_tc_pool_bind_get_dumpit,
7896 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
7897 /* can be retrieved by unprivileged users */
7900 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_SET,
7901 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7902 .doit = devlink_nl_cmd_sb_tc_pool_bind_set_doit,
7903 .flags = GENL_ADMIN_PERM,
7904 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
7907 .cmd = DEVLINK_CMD_SB_OCC_SNAPSHOT,
7908 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7909 .doit = devlink_nl_cmd_sb_occ_snapshot_doit,
7910 .flags = GENL_ADMIN_PERM,
7913 .cmd = DEVLINK_CMD_SB_OCC_MAX_CLEAR,
7914 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7915 .doit = devlink_nl_cmd_sb_occ_max_clear_doit,
7916 .flags = GENL_ADMIN_PERM,
7919 .cmd = DEVLINK_CMD_ESWITCH_GET,
7920 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7921 .doit = devlink_nl_cmd_eswitch_get_doit,
7922 .flags = GENL_ADMIN_PERM,
7923 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
7926 .cmd = DEVLINK_CMD_ESWITCH_SET,
7927 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7928 .doit = devlink_nl_cmd_eswitch_set_doit,
7929 .flags = GENL_ADMIN_PERM,
7930 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
7933 .cmd = DEVLINK_CMD_DPIPE_TABLE_GET,
7934 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7935 .doit = devlink_nl_cmd_dpipe_table_get,
7936 /* can be retrieved by unprivileged users */
7939 .cmd = DEVLINK_CMD_DPIPE_ENTRIES_GET,
7940 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7941 .doit = devlink_nl_cmd_dpipe_entries_get,
7942 /* can be retrieved by unprivileged users */
7945 .cmd = DEVLINK_CMD_DPIPE_HEADERS_GET,
7946 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7947 .doit = devlink_nl_cmd_dpipe_headers_get,
7948 /* can be retrieved by unprivileged users */
7951 .cmd = DEVLINK_CMD_DPIPE_TABLE_COUNTERS_SET,
7952 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7953 .doit = devlink_nl_cmd_dpipe_table_counters_set,
7954 .flags = GENL_ADMIN_PERM,
7957 .cmd = DEVLINK_CMD_RESOURCE_SET,
7958 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7959 .doit = devlink_nl_cmd_resource_set,
7960 .flags = GENL_ADMIN_PERM,
7963 .cmd = DEVLINK_CMD_RESOURCE_DUMP,
7964 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7965 .doit = devlink_nl_cmd_resource_dump,
7966 /* can be retrieved by unprivileged users */
7969 .cmd = DEVLINK_CMD_RELOAD,
7970 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7971 .doit = devlink_nl_cmd_reload,
7972 .flags = GENL_ADMIN_PERM,
7973 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
7976 .cmd = DEVLINK_CMD_PARAM_GET,
7977 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7978 .doit = devlink_nl_cmd_param_get_doit,
7979 .dumpit = devlink_nl_cmd_param_get_dumpit,
7980 /* can be retrieved by unprivileged users */
7983 .cmd = DEVLINK_CMD_PARAM_SET,
7984 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7985 .doit = devlink_nl_cmd_param_set_doit,
7986 .flags = GENL_ADMIN_PERM,
7989 .cmd = DEVLINK_CMD_PORT_PARAM_GET,
7990 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7991 .doit = devlink_nl_cmd_port_param_get_doit,
7992 .dumpit = devlink_nl_cmd_port_param_get_dumpit,
7993 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
7994 /* can be retrieved by unprivileged users */
7997 .cmd = DEVLINK_CMD_PORT_PARAM_SET,
7998 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7999 .doit = devlink_nl_cmd_port_param_set_doit,
8000 .flags = GENL_ADMIN_PERM,
8001 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
8004 .cmd = DEVLINK_CMD_REGION_GET,
8005 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8006 .doit = devlink_nl_cmd_region_get_doit,
8007 .dumpit = devlink_nl_cmd_region_get_dumpit,
8008 .flags = GENL_ADMIN_PERM,
8011 .cmd = DEVLINK_CMD_REGION_NEW,
8012 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8013 .doit = devlink_nl_cmd_region_new,
8014 .flags = GENL_ADMIN_PERM,
8017 .cmd = DEVLINK_CMD_REGION_DEL,
8018 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8019 .doit = devlink_nl_cmd_region_del,
8020 .flags = GENL_ADMIN_PERM,
8023 .cmd = DEVLINK_CMD_REGION_READ,
8024 .validate = GENL_DONT_VALIDATE_STRICT |
8025 GENL_DONT_VALIDATE_DUMP_STRICT,
8026 .dumpit = devlink_nl_cmd_region_read_dumpit,
8027 .flags = GENL_ADMIN_PERM,
8030 .cmd = DEVLINK_CMD_INFO_GET,
8031 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8032 .doit = devlink_nl_cmd_info_get_doit,
8033 .dumpit = devlink_nl_cmd_info_get_dumpit,
8034 /* can be retrieved by unprivileged users */
8037 .cmd = DEVLINK_CMD_HEALTH_REPORTER_GET,
8038 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8039 .doit = devlink_nl_cmd_health_reporter_get_doit,
8040 .dumpit = devlink_nl_cmd_health_reporter_get_dumpit,
8041 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
8042 DEVLINK_NL_FLAG_NO_LOCK,
8043 /* can be retrieved by unprivileged users */
8046 .cmd = DEVLINK_CMD_HEALTH_REPORTER_SET,
8047 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8048 .doit = devlink_nl_cmd_health_reporter_set_doit,
8049 .flags = GENL_ADMIN_PERM,
8050 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
8051 DEVLINK_NL_FLAG_NO_LOCK,
8054 .cmd = DEVLINK_CMD_HEALTH_REPORTER_RECOVER,
8055 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8056 .doit = devlink_nl_cmd_health_reporter_recover_doit,
8057 .flags = GENL_ADMIN_PERM,
8058 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
8059 DEVLINK_NL_FLAG_NO_LOCK,
8062 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE,
8063 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8064 .doit = devlink_nl_cmd_health_reporter_diagnose_doit,
8065 .flags = GENL_ADMIN_PERM,
8066 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
8067 DEVLINK_NL_FLAG_NO_LOCK,
8070 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET,
8071 .validate = GENL_DONT_VALIDATE_STRICT |
8072 GENL_DONT_VALIDATE_DUMP_STRICT,
8073 .dumpit = devlink_nl_cmd_health_reporter_dump_get_dumpit,
8074 .flags = GENL_ADMIN_PERM,
8075 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
8076 DEVLINK_NL_FLAG_NO_LOCK,
8079 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_CLEAR,
8080 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8081 .doit = devlink_nl_cmd_health_reporter_dump_clear_doit,
8082 .flags = GENL_ADMIN_PERM,
8083 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
8084 DEVLINK_NL_FLAG_NO_LOCK,
8087 .cmd = DEVLINK_CMD_HEALTH_REPORTER_TEST,
8088 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8089 .doit = devlink_nl_cmd_health_reporter_test_doit,
8090 .flags = GENL_ADMIN_PERM,
8091 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
8092 DEVLINK_NL_FLAG_NO_LOCK,
8095 .cmd = DEVLINK_CMD_FLASH_UPDATE,
8096 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8097 .doit = devlink_nl_cmd_flash_update,
8098 .flags = GENL_ADMIN_PERM,
8101 .cmd = DEVLINK_CMD_TRAP_GET,
8102 .doit = devlink_nl_cmd_trap_get_doit,
8103 .dumpit = devlink_nl_cmd_trap_get_dumpit,
8104 /* can be retrieved by unprivileged users */
8107 .cmd = DEVLINK_CMD_TRAP_SET,
8108 .doit = devlink_nl_cmd_trap_set_doit,
8109 .flags = GENL_ADMIN_PERM,
8112 .cmd = DEVLINK_CMD_TRAP_GROUP_GET,
8113 .doit = devlink_nl_cmd_trap_group_get_doit,
8114 .dumpit = devlink_nl_cmd_trap_group_get_dumpit,
8115 /* can be retrieved by unprivileged users */
8118 .cmd = DEVLINK_CMD_TRAP_GROUP_SET,
8119 .doit = devlink_nl_cmd_trap_group_set_doit,
8120 .flags = GENL_ADMIN_PERM,
8123 .cmd = DEVLINK_CMD_TRAP_POLICER_GET,
8124 .doit = devlink_nl_cmd_trap_policer_get_doit,
8125 .dumpit = devlink_nl_cmd_trap_policer_get_dumpit,
8126 /* can be retrieved by unprivileged users */
8129 .cmd = DEVLINK_CMD_TRAP_POLICER_SET,
8130 .doit = devlink_nl_cmd_trap_policer_set_doit,
8131 .flags = GENL_ADMIN_PERM,
8135 static struct genl_family devlink_nl_family __ro_after_init = {
8136 .name = DEVLINK_GENL_NAME,
8137 .version = DEVLINK_GENL_VERSION,
8138 .maxattr = DEVLINK_ATTR_MAX,
8139 .policy = devlink_nl_policy,
8141 .pre_doit = devlink_nl_pre_doit,
8142 .post_doit = devlink_nl_post_doit,
8143 .module = THIS_MODULE,
8144 .small_ops = devlink_nl_ops,
8145 .n_small_ops = ARRAY_SIZE(devlink_nl_ops),
8146 .mcgrps = devlink_nl_mcgrps,
8147 .n_mcgrps = ARRAY_SIZE(devlink_nl_mcgrps),
8150 static bool devlink_reload_actions_valid(const struct devlink_ops *ops)
8152 const struct devlink_reload_combination *comb;
8155 if (!devlink_reload_supported(ops)) {
8156 if (WARN_ON(ops->reload_actions))
8161 if (WARN_ON(!ops->reload_actions ||
8162 ops->reload_actions & BIT(DEVLINK_RELOAD_ACTION_UNSPEC) ||
8163 ops->reload_actions >= BIT(__DEVLINK_RELOAD_ACTION_MAX)))
8166 if (WARN_ON(ops->reload_limits & BIT(DEVLINK_RELOAD_LIMIT_UNSPEC) ||
8167 ops->reload_limits >= BIT(__DEVLINK_RELOAD_LIMIT_MAX)))
8170 for (i = 0; i < ARRAY_SIZE(devlink_reload_invalid_combinations); i++) {
8171 comb = &devlink_reload_invalid_combinations[i];
8172 if (ops->reload_actions == BIT(comb->action) &&
8173 ops->reload_limits == BIT(comb->limit))
8180 * devlink_alloc - Allocate new devlink instance resources
8183 * @priv_size: size of user private data
8185 * Allocate new devlink instance resources, including devlink index
8188 struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size)
8190 struct devlink *devlink;
8195 if (!devlink_reload_actions_valid(ops))
8198 devlink = kzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL);
8202 xa_init_flags(&devlink->snapshot_ids, XA_FLAGS_ALLOC);
8203 __devlink_net_set(devlink, &init_net);
8204 INIT_LIST_HEAD(&devlink->port_list);
8205 INIT_LIST_HEAD(&devlink->sb_list);
8206 INIT_LIST_HEAD_RCU(&devlink->dpipe_table_list);
8207 INIT_LIST_HEAD(&devlink->resource_list);
8208 INIT_LIST_HEAD(&devlink->param_list);
8209 INIT_LIST_HEAD(&devlink->region_list);
8210 INIT_LIST_HEAD(&devlink->reporter_list);
8211 INIT_LIST_HEAD(&devlink->trap_list);
8212 INIT_LIST_HEAD(&devlink->trap_group_list);
8213 INIT_LIST_HEAD(&devlink->trap_policer_list);
8214 mutex_init(&devlink->lock);
8215 mutex_init(&devlink->reporters_lock);
8218 EXPORT_SYMBOL_GPL(devlink_alloc);
8221 * devlink_register - Register devlink instance
8224 * @dev: parent device
8226 int devlink_register(struct devlink *devlink, struct device *dev)
8229 devlink->registered = true;
8230 mutex_lock(&devlink_mutex);
8231 list_add_tail(&devlink->list, &devlink_list);
8232 devlink_notify(devlink, DEVLINK_CMD_NEW);
8233 mutex_unlock(&devlink_mutex);
8236 EXPORT_SYMBOL_GPL(devlink_register);
8239 * devlink_unregister - Unregister devlink instance
8243 void devlink_unregister(struct devlink *devlink)
8245 mutex_lock(&devlink_mutex);
8246 WARN_ON(devlink_reload_supported(devlink->ops) &&
8247 devlink->reload_enabled);
8248 devlink_notify(devlink, DEVLINK_CMD_DEL);
8249 list_del(&devlink->list);
8250 mutex_unlock(&devlink_mutex);
8252 EXPORT_SYMBOL_GPL(devlink_unregister);
8255 * devlink_reload_enable - Enable reload of devlink instance
8259 * Should be called at end of device initialization
8260 * process when reload operation is supported.
8262 void devlink_reload_enable(struct devlink *devlink)
8264 mutex_lock(&devlink_mutex);
8265 devlink->reload_enabled = true;
8266 mutex_unlock(&devlink_mutex);
8268 EXPORT_SYMBOL_GPL(devlink_reload_enable);
8271 * devlink_reload_disable - Disable reload of devlink instance
8275 * Should be called at the beginning of device cleanup
8276 * process when reload operation is supported.
8278 void devlink_reload_disable(struct devlink *devlink)
8280 mutex_lock(&devlink_mutex);
8281 /* Mutex is taken which ensures that no reload operation is in
8282 * progress while setting up forbidded flag.
8284 devlink->reload_enabled = false;
8285 mutex_unlock(&devlink_mutex);
8287 EXPORT_SYMBOL_GPL(devlink_reload_disable);
8290 * devlink_free - Free devlink instance resources
8294 void devlink_free(struct devlink *devlink)
8296 mutex_destroy(&devlink->reporters_lock);
8297 mutex_destroy(&devlink->lock);
8298 WARN_ON(!list_empty(&devlink->trap_policer_list));
8299 WARN_ON(!list_empty(&devlink->trap_group_list));
8300 WARN_ON(!list_empty(&devlink->trap_list));
8301 WARN_ON(!list_empty(&devlink->reporter_list));
8302 WARN_ON(!list_empty(&devlink->region_list));
8303 WARN_ON(!list_empty(&devlink->param_list));
8304 WARN_ON(!list_empty(&devlink->resource_list));
8305 WARN_ON(!list_empty(&devlink->dpipe_table_list));
8306 WARN_ON(!list_empty(&devlink->sb_list));
8307 WARN_ON(!list_empty(&devlink->port_list));
8309 xa_destroy(&devlink->snapshot_ids);
8313 EXPORT_SYMBOL_GPL(devlink_free);
8315 static void devlink_port_type_warn(struct work_struct *work)
8317 WARN(true, "Type was not set for devlink port.");
8320 static bool devlink_port_type_should_warn(struct devlink_port *devlink_port)
8322 /* Ignore CPU and DSA flavours. */
8323 return devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_CPU &&
8324 devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_DSA &&
8325 devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_UNUSED;
8328 #define DEVLINK_PORT_TYPE_WARN_TIMEOUT (HZ * 3600)
8330 static void devlink_port_type_warn_schedule(struct devlink_port *devlink_port)
8332 if (!devlink_port_type_should_warn(devlink_port))
8334 /* Schedule a work to WARN in case driver does not set port
8335 * type within timeout.
8337 schedule_delayed_work(&devlink_port->type_warn_dw,
8338 DEVLINK_PORT_TYPE_WARN_TIMEOUT);
8341 static void devlink_port_type_warn_cancel(struct devlink_port *devlink_port)
8343 if (!devlink_port_type_should_warn(devlink_port))
8345 cancel_delayed_work_sync(&devlink_port->type_warn_dw);
8349 * devlink_port_register - Register devlink port
8352 * @devlink_port: devlink port
8353 * @port_index: driver-specific numerical identifier of the port
8355 * Register devlink port with provided port index. User can use
8356 * any indexing, even hw-related one. devlink_port structure
8357 * is convenient to be embedded inside user driver private structure.
8358 * Note that the caller should take care of zeroing the devlink_port
8361 int devlink_port_register(struct devlink *devlink,
8362 struct devlink_port *devlink_port,
8363 unsigned int port_index)
8365 mutex_lock(&devlink->lock);
8366 if (devlink_port_index_exists(devlink, port_index)) {
8367 mutex_unlock(&devlink->lock);
8370 devlink_port->devlink = devlink;
8371 devlink_port->index = port_index;
8372 devlink_port->registered = true;
8373 spin_lock_init(&devlink_port->type_lock);
8374 INIT_LIST_HEAD(&devlink_port->reporter_list);
8375 mutex_init(&devlink_port->reporters_lock);
8376 list_add_tail(&devlink_port->list, &devlink->port_list);
8377 INIT_LIST_HEAD(&devlink_port->param_list);
8378 INIT_LIST_HEAD(&devlink_port->region_list);
8379 mutex_unlock(&devlink->lock);
8380 INIT_DELAYED_WORK(&devlink_port->type_warn_dw, &devlink_port_type_warn);
8381 devlink_port_type_warn_schedule(devlink_port);
8382 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
8385 EXPORT_SYMBOL_GPL(devlink_port_register);
8388 * devlink_port_unregister - Unregister devlink port
8390 * @devlink_port: devlink port
8392 void devlink_port_unregister(struct devlink_port *devlink_port)
8394 struct devlink *devlink = devlink_port->devlink;
8396 devlink_port_type_warn_cancel(devlink_port);
8397 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
8398 mutex_lock(&devlink->lock);
8399 list_del(&devlink_port->list);
8400 mutex_unlock(&devlink->lock);
8401 WARN_ON(!list_empty(&devlink_port->reporter_list));
8402 WARN_ON(!list_empty(&devlink_port->region_list));
8403 mutex_destroy(&devlink_port->reporters_lock);
8405 EXPORT_SYMBOL_GPL(devlink_port_unregister);
8407 static void __devlink_port_type_set(struct devlink_port *devlink_port,
8408 enum devlink_port_type type,
8411 if (WARN_ON(!devlink_port->registered))
8413 devlink_port_type_warn_cancel(devlink_port);
8414 spin_lock_bh(&devlink_port->type_lock);
8415 devlink_port->type = type;
8416 devlink_port->type_dev = type_dev;
8417 spin_unlock_bh(&devlink_port->type_lock);
8418 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
8421 static void devlink_port_type_netdev_checks(struct devlink_port *devlink_port,
8422 struct net_device *netdev)
8424 const struct net_device_ops *ops = netdev->netdev_ops;
8426 /* If driver registers devlink port, it should set devlink port
8427 * attributes accordingly so the compat functions are called
8428 * and the original ops are not used.
8430 if (ops->ndo_get_phys_port_name) {
8431 /* Some drivers use the same set of ndos for netdevs
8432 * that have devlink_port registered and also for
8433 * those who don't. Make sure that ndo_get_phys_port_name
8434 * returns -EOPNOTSUPP here in case it is defined.
8437 char name[IFNAMSIZ];
8440 err = ops->ndo_get_phys_port_name(netdev, name, sizeof(name));
8441 WARN_ON(err != -EOPNOTSUPP);
8443 if (ops->ndo_get_port_parent_id) {
8444 /* Some drivers use the same set of ndos for netdevs
8445 * that have devlink_port registered and also for
8446 * those who don't. Make sure that ndo_get_port_parent_id
8447 * returns -EOPNOTSUPP here in case it is defined.
8450 struct netdev_phys_item_id ppid;
8453 err = ops->ndo_get_port_parent_id(netdev, &ppid);
8454 WARN_ON(err != -EOPNOTSUPP);
8459 * devlink_port_type_eth_set - Set port type to Ethernet
8461 * @devlink_port: devlink port
8462 * @netdev: related netdevice
8464 void devlink_port_type_eth_set(struct devlink_port *devlink_port,
8465 struct net_device *netdev)
8468 devlink_port_type_netdev_checks(devlink_port, netdev);
8470 dev_warn(devlink_port->devlink->dev,
8471 "devlink port type for port %d set to Ethernet without a software interface reference, device type not supported by the kernel?\n",
8472 devlink_port->index);
8474 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH, netdev);
8476 EXPORT_SYMBOL_GPL(devlink_port_type_eth_set);
8479 * devlink_port_type_ib_set - Set port type to InfiniBand
8481 * @devlink_port: devlink port
8482 * @ibdev: related IB device
8484 void devlink_port_type_ib_set(struct devlink_port *devlink_port,
8485 struct ib_device *ibdev)
8487 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_IB, ibdev);
8489 EXPORT_SYMBOL_GPL(devlink_port_type_ib_set);
8492 * devlink_port_type_clear - Clear port type
8494 * @devlink_port: devlink port
8496 void devlink_port_type_clear(struct devlink_port *devlink_port)
8498 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET, NULL);
8499 devlink_port_type_warn_schedule(devlink_port);
8501 EXPORT_SYMBOL_GPL(devlink_port_type_clear);
8503 static int __devlink_port_attrs_set(struct devlink_port *devlink_port,
8504 enum devlink_port_flavour flavour)
8506 struct devlink_port_attrs *attrs = &devlink_port->attrs;
8508 devlink_port->attrs_set = true;
8509 attrs->flavour = flavour;
8510 if (attrs->switch_id.id_len) {
8511 devlink_port->switch_port = true;
8512 if (WARN_ON(attrs->switch_id.id_len > MAX_PHYS_ITEM_ID_LEN))
8513 attrs->switch_id.id_len = MAX_PHYS_ITEM_ID_LEN;
8515 devlink_port->switch_port = false;
8521 * devlink_port_attrs_set - Set port attributes
8523 * @devlink_port: devlink port
8524 * @attrs: devlink port attrs
8526 void devlink_port_attrs_set(struct devlink_port *devlink_port,
8527 struct devlink_port_attrs *attrs)
8531 if (WARN_ON(devlink_port->registered))
8533 devlink_port->attrs = *attrs;
8534 ret = __devlink_port_attrs_set(devlink_port, attrs->flavour);
8537 WARN_ON(attrs->splittable && attrs->split);
8539 EXPORT_SYMBOL_GPL(devlink_port_attrs_set);
8542 * devlink_port_attrs_pci_pf_set - Set PCI PF port attributes
8544 * @devlink_port: devlink port
8545 * @controller: associated controller number for the devlink port instance
8546 * @pf: associated PF for the devlink port instance
8547 * @external: indicates if the port is for an external controller
8549 void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port, u32 controller,
8550 u16 pf, bool external)
8552 struct devlink_port_attrs *attrs = &devlink_port->attrs;
8555 if (WARN_ON(devlink_port->registered))
8557 ret = __devlink_port_attrs_set(devlink_port,
8558 DEVLINK_PORT_FLAVOUR_PCI_PF);
8561 attrs->pci_pf.controller = controller;
8562 attrs->pci_pf.pf = pf;
8563 attrs->pci_pf.external = external;
8565 EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_pf_set);
8568 * devlink_port_attrs_pci_vf_set - Set PCI VF port attributes
8570 * @devlink_port: devlink port
8571 * @controller: associated controller number for the devlink port instance
8572 * @pf: associated PF for the devlink port instance
8573 * @vf: associated VF of a PF for the devlink port instance
8574 * @external: indicates if the port is for an external controller
8576 void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port, u32 controller,
8577 u16 pf, u16 vf, bool external)
8579 struct devlink_port_attrs *attrs = &devlink_port->attrs;
8582 if (WARN_ON(devlink_port->registered))
8584 ret = __devlink_port_attrs_set(devlink_port,
8585 DEVLINK_PORT_FLAVOUR_PCI_VF);
8588 attrs->pci_vf.controller = controller;
8589 attrs->pci_vf.pf = pf;
8590 attrs->pci_vf.vf = vf;
8591 attrs->pci_vf.external = external;
8593 EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_vf_set);
8596 * devlink_port_attrs_pci_sf_set - Set PCI SF port attributes
8598 * @devlink_port: devlink port
8599 * @controller: associated controller number for the devlink port instance
8600 * @pf: associated PF for the devlink port instance
8601 * @sf: associated SF of a PF for the devlink port instance
8602 * @external: indicates if the port is for an external controller
8604 void devlink_port_attrs_pci_sf_set(struct devlink_port *devlink_port, u32 controller,
8605 u16 pf, u32 sf, bool external)
8607 struct devlink_port_attrs *attrs = &devlink_port->attrs;
8610 if (WARN_ON(devlink_port->registered))
8612 ret = __devlink_port_attrs_set(devlink_port,
8613 DEVLINK_PORT_FLAVOUR_PCI_SF);
8616 attrs->pci_sf.controller = controller;
8617 attrs->pci_sf.pf = pf;
8618 attrs->pci_sf.sf = sf;
8619 attrs->pci_sf.external = external;
8621 EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_sf_set);
8623 static int __devlink_port_phys_port_name_get(struct devlink_port *devlink_port,
8624 char *name, size_t len)
8626 struct devlink_port_attrs *attrs = &devlink_port->attrs;
8629 if (!devlink_port->attrs_set)
8632 switch (attrs->flavour) {
8633 case DEVLINK_PORT_FLAVOUR_PHYSICAL:
8634 case DEVLINK_PORT_FLAVOUR_VIRTUAL:
8636 n = snprintf(name, len, "p%u", attrs->phys.port_number);
8638 n = snprintf(name, len, "p%us%u",
8639 attrs->phys.port_number,
8640 attrs->phys.split_subport_number);
8642 case DEVLINK_PORT_FLAVOUR_CPU:
8643 case DEVLINK_PORT_FLAVOUR_DSA:
8644 case DEVLINK_PORT_FLAVOUR_UNUSED:
8645 /* As CPU and DSA ports do not have a netdevice associated
8646 * case should not ever happen.
8650 case DEVLINK_PORT_FLAVOUR_PCI_PF:
8651 if (attrs->pci_pf.external) {
8652 n = snprintf(name, len, "c%u", attrs->pci_pf.controller);
8658 n = snprintf(name, len, "pf%u", attrs->pci_pf.pf);
8660 case DEVLINK_PORT_FLAVOUR_PCI_VF:
8661 if (attrs->pci_vf.external) {
8662 n = snprintf(name, len, "c%u", attrs->pci_vf.controller);
8668 n = snprintf(name, len, "pf%uvf%u",
8669 attrs->pci_vf.pf, attrs->pci_vf.vf);
8671 case DEVLINK_PORT_FLAVOUR_PCI_SF:
8672 if (attrs->pci_sf.external) {
8673 n = snprintf(name, len, "c%u", attrs->pci_sf.controller);
8679 n = snprintf(name, len, "pf%usf%u", attrs->pci_sf.pf,
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);