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 #include <net/drop_monitor.h>
31 #define CREATE_TRACE_POINTS
32 #include <trace/events/devlink.h>
34 static struct devlink_dpipe_field devlink_dpipe_fields_ethernet[] = {
36 .name = "destination mac",
37 .id = DEVLINK_DPIPE_FIELD_ETHERNET_DST_MAC,
42 struct devlink_dpipe_header devlink_dpipe_header_ethernet = {
44 .id = DEVLINK_DPIPE_HEADER_ETHERNET,
45 .fields = devlink_dpipe_fields_ethernet,
46 .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ethernet),
49 EXPORT_SYMBOL(devlink_dpipe_header_ethernet);
51 static struct devlink_dpipe_field devlink_dpipe_fields_ipv4[] = {
53 .name = "destination ip",
54 .id = DEVLINK_DPIPE_FIELD_IPV4_DST_IP,
59 struct devlink_dpipe_header devlink_dpipe_header_ipv4 = {
61 .id = DEVLINK_DPIPE_HEADER_IPV4,
62 .fields = devlink_dpipe_fields_ipv4,
63 .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv4),
66 EXPORT_SYMBOL(devlink_dpipe_header_ipv4);
68 static struct devlink_dpipe_field devlink_dpipe_fields_ipv6[] = {
70 .name = "destination ip",
71 .id = DEVLINK_DPIPE_FIELD_IPV6_DST_IP,
76 struct devlink_dpipe_header devlink_dpipe_header_ipv6 = {
78 .id = DEVLINK_DPIPE_HEADER_IPV6,
79 .fields = devlink_dpipe_fields_ipv6,
80 .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv6),
83 EXPORT_SYMBOL(devlink_dpipe_header_ipv6);
85 EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwmsg);
86 EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwerr);
88 static LIST_HEAD(devlink_list);
92 * An overall lock guarding every operation coming from userspace.
93 * It also guards devlink devices list and it is taken when
94 * driver registers/unregisters it.
96 static DEFINE_MUTEX(devlink_mutex);
98 struct net *devlink_net(const struct devlink *devlink)
100 return read_pnet(&devlink->_net);
102 EXPORT_SYMBOL_GPL(devlink_net);
104 static void __devlink_net_set(struct devlink *devlink, struct net *net)
106 write_pnet(&devlink->_net, net);
109 void devlink_net_set(struct devlink *devlink, struct net *net)
111 if (WARN_ON(devlink->registered))
113 __devlink_net_set(devlink, net);
115 EXPORT_SYMBOL_GPL(devlink_net_set);
117 static struct devlink *devlink_get_from_attrs(struct net *net,
118 struct nlattr **attrs)
120 struct devlink *devlink;
124 if (!attrs[DEVLINK_ATTR_BUS_NAME] || !attrs[DEVLINK_ATTR_DEV_NAME])
125 return ERR_PTR(-EINVAL);
127 busname = nla_data(attrs[DEVLINK_ATTR_BUS_NAME]);
128 devname = nla_data(attrs[DEVLINK_ATTR_DEV_NAME]);
130 lockdep_assert_held(&devlink_mutex);
132 list_for_each_entry(devlink, &devlink_list, list) {
133 if (strcmp(devlink->dev->bus->name, busname) == 0 &&
134 strcmp(dev_name(devlink->dev), devname) == 0 &&
135 net_eq(devlink_net(devlink), net))
139 return ERR_PTR(-ENODEV);
142 static struct devlink *devlink_get_from_info(struct genl_info *info)
144 return devlink_get_from_attrs(genl_info_net(info), info->attrs);
147 static struct devlink_port *devlink_port_get_by_index(struct devlink *devlink,
148 unsigned int port_index)
150 struct devlink_port *devlink_port;
152 list_for_each_entry(devlink_port, &devlink->port_list, list) {
153 if (devlink_port->index == port_index)
159 static bool devlink_port_index_exists(struct devlink *devlink,
160 unsigned int port_index)
162 return devlink_port_get_by_index(devlink, port_index);
165 static struct devlink_port *devlink_port_get_from_attrs(struct devlink *devlink,
166 struct nlattr **attrs)
168 if (attrs[DEVLINK_ATTR_PORT_INDEX]) {
169 u32 port_index = nla_get_u32(attrs[DEVLINK_ATTR_PORT_INDEX]);
170 struct devlink_port *devlink_port;
172 devlink_port = devlink_port_get_by_index(devlink, port_index);
174 return ERR_PTR(-ENODEV);
177 return ERR_PTR(-EINVAL);
180 static struct devlink_port *devlink_port_get_from_info(struct devlink *devlink,
181 struct genl_info *info)
183 return devlink_port_get_from_attrs(devlink, info->attrs);
187 struct list_head list;
190 u16 ingress_pools_count;
191 u16 egress_pools_count;
192 u16 ingress_tc_count;
196 static u16 devlink_sb_pool_count(struct devlink_sb *devlink_sb)
198 return devlink_sb->ingress_pools_count + devlink_sb->egress_pools_count;
201 static struct devlink_sb *devlink_sb_get_by_index(struct devlink *devlink,
202 unsigned int sb_index)
204 struct devlink_sb *devlink_sb;
206 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
207 if (devlink_sb->index == sb_index)
213 static bool devlink_sb_index_exists(struct devlink *devlink,
214 unsigned int sb_index)
216 return devlink_sb_get_by_index(devlink, sb_index);
219 static struct devlink_sb *devlink_sb_get_from_attrs(struct devlink *devlink,
220 struct nlattr **attrs)
222 if (attrs[DEVLINK_ATTR_SB_INDEX]) {
223 u32 sb_index = nla_get_u32(attrs[DEVLINK_ATTR_SB_INDEX]);
224 struct devlink_sb *devlink_sb;
226 devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
228 return ERR_PTR(-ENODEV);
231 return ERR_PTR(-EINVAL);
234 static struct devlink_sb *devlink_sb_get_from_info(struct devlink *devlink,
235 struct genl_info *info)
237 return devlink_sb_get_from_attrs(devlink, info->attrs);
240 static int devlink_sb_pool_index_get_from_attrs(struct devlink_sb *devlink_sb,
241 struct nlattr **attrs,
246 if (!attrs[DEVLINK_ATTR_SB_POOL_INDEX])
249 val = nla_get_u16(attrs[DEVLINK_ATTR_SB_POOL_INDEX]);
250 if (val >= devlink_sb_pool_count(devlink_sb))
256 static int devlink_sb_pool_index_get_from_info(struct devlink_sb *devlink_sb,
257 struct genl_info *info,
260 return devlink_sb_pool_index_get_from_attrs(devlink_sb, info->attrs,
265 devlink_sb_pool_type_get_from_attrs(struct nlattr **attrs,
266 enum devlink_sb_pool_type *p_pool_type)
270 if (!attrs[DEVLINK_ATTR_SB_POOL_TYPE])
273 val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_TYPE]);
274 if (val != DEVLINK_SB_POOL_TYPE_INGRESS &&
275 val != DEVLINK_SB_POOL_TYPE_EGRESS)
282 devlink_sb_pool_type_get_from_info(struct genl_info *info,
283 enum devlink_sb_pool_type *p_pool_type)
285 return devlink_sb_pool_type_get_from_attrs(info->attrs, p_pool_type);
289 devlink_sb_th_type_get_from_attrs(struct nlattr **attrs,
290 enum devlink_sb_threshold_type *p_th_type)
294 if (!attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE])
297 val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE]);
298 if (val != DEVLINK_SB_THRESHOLD_TYPE_STATIC &&
299 val != DEVLINK_SB_THRESHOLD_TYPE_DYNAMIC)
306 devlink_sb_th_type_get_from_info(struct genl_info *info,
307 enum devlink_sb_threshold_type *p_th_type)
309 return devlink_sb_th_type_get_from_attrs(info->attrs, p_th_type);
313 devlink_sb_tc_index_get_from_attrs(struct devlink_sb *devlink_sb,
314 struct nlattr **attrs,
315 enum devlink_sb_pool_type pool_type,
320 if (!attrs[DEVLINK_ATTR_SB_TC_INDEX])
323 val = nla_get_u16(attrs[DEVLINK_ATTR_SB_TC_INDEX]);
324 if (pool_type == DEVLINK_SB_POOL_TYPE_INGRESS &&
325 val >= devlink_sb->ingress_tc_count)
327 if (pool_type == DEVLINK_SB_POOL_TYPE_EGRESS &&
328 val >= devlink_sb->egress_tc_count)
335 devlink_sb_tc_index_get_from_info(struct devlink_sb *devlink_sb,
336 struct genl_info *info,
337 enum devlink_sb_pool_type pool_type,
340 return devlink_sb_tc_index_get_from_attrs(devlink_sb, info->attrs,
341 pool_type, p_tc_index);
344 struct devlink_region {
345 struct devlink *devlink;
346 struct list_head list;
348 struct list_head snapshot_list;
354 struct devlink_snapshot {
355 struct list_head list;
356 struct devlink_region *region;
357 devlink_snapshot_data_dest_t *data_destructor;
362 static struct devlink_region *
363 devlink_region_get_by_name(struct devlink *devlink, const char *region_name)
365 struct devlink_region *region;
367 list_for_each_entry(region, &devlink->region_list, list)
368 if (!strcmp(region->name, region_name))
374 static struct devlink_snapshot *
375 devlink_region_snapshot_get_by_id(struct devlink_region *region, u32 id)
377 struct devlink_snapshot *snapshot;
379 list_for_each_entry(snapshot, ®ion->snapshot_list, list)
380 if (snapshot->id == id)
386 #define DEVLINK_NL_FLAG_NEED_DEVLINK BIT(0)
387 #define DEVLINK_NL_FLAG_NEED_PORT BIT(1)
388 #define DEVLINK_NL_FLAG_NEED_SB BIT(2)
390 /* The per devlink instance lock is taken by default in the pre-doit
391 * operation, yet several commands do not require this. The global
392 * devlink lock is taken and protects from disruption by user-calls.
394 #define DEVLINK_NL_FLAG_NO_LOCK BIT(3)
396 static int devlink_nl_pre_doit(const struct genl_ops *ops,
397 struct sk_buff *skb, struct genl_info *info)
399 struct devlink *devlink;
402 mutex_lock(&devlink_mutex);
403 devlink = devlink_get_from_info(info);
404 if (IS_ERR(devlink)) {
405 mutex_unlock(&devlink_mutex);
406 return PTR_ERR(devlink);
408 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
409 mutex_lock(&devlink->lock);
410 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_DEVLINK) {
411 info->user_ptr[0] = devlink;
412 } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT) {
413 struct devlink_port *devlink_port;
415 devlink_port = devlink_port_get_from_info(devlink, info);
416 if (IS_ERR(devlink_port)) {
417 err = PTR_ERR(devlink_port);
420 info->user_ptr[0] = devlink_port;
422 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_SB) {
423 struct devlink_sb *devlink_sb;
425 devlink_sb = devlink_sb_get_from_info(devlink, info);
426 if (IS_ERR(devlink_sb)) {
427 err = PTR_ERR(devlink_sb);
430 info->user_ptr[1] = devlink_sb;
435 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
436 mutex_unlock(&devlink->lock);
437 mutex_unlock(&devlink_mutex);
441 static void devlink_nl_post_doit(const struct genl_ops *ops,
442 struct sk_buff *skb, struct genl_info *info)
444 struct devlink *devlink;
446 /* When devlink changes netns, it would not be found
447 * by devlink_get_from_info(). So try if it is stored first.
449 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_DEVLINK) {
450 devlink = info->user_ptr[0];
452 devlink = devlink_get_from_info(info);
453 WARN_ON(IS_ERR(devlink));
455 if (!IS_ERR(devlink) && ~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
456 mutex_unlock(&devlink->lock);
457 mutex_unlock(&devlink_mutex);
460 static struct genl_family devlink_nl_family;
462 enum devlink_multicast_groups {
463 DEVLINK_MCGRP_CONFIG,
466 static const struct genl_multicast_group devlink_nl_mcgrps[] = {
467 [DEVLINK_MCGRP_CONFIG] = { .name = DEVLINK_GENL_MCGRP_CONFIG_NAME },
470 static int devlink_nl_put_handle(struct sk_buff *msg, struct devlink *devlink)
472 if (nla_put_string(msg, DEVLINK_ATTR_BUS_NAME, devlink->dev->bus->name))
474 if (nla_put_string(msg, DEVLINK_ATTR_DEV_NAME, dev_name(devlink->dev)))
479 static int devlink_nl_fill(struct sk_buff *msg, struct devlink *devlink,
480 enum devlink_command cmd, u32 portid,
485 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
489 if (devlink_nl_put_handle(msg, devlink))
490 goto nla_put_failure;
491 if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_FAILED, devlink->reload_failed))
492 goto nla_put_failure;
494 genlmsg_end(msg, hdr);
498 genlmsg_cancel(msg, hdr);
502 static void devlink_notify(struct devlink *devlink, enum devlink_command cmd)
507 WARN_ON(cmd != DEVLINK_CMD_NEW && cmd != DEVLINK_CMD_DEL);
509 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
513 err = devlink_nl_fill(msg, devlink, cmd, 0, 0, 0);
519 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
520 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
523 static int devlink_nl_port_attrs_put(struct sk_buff *msg,
524 struct devlink_port *devlink_port)
526 struct devlink_port_attrs *attrs = &devlink_port->attrs;
530 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_FLAVOUR, attrs->flavour))
532 switch (devlink_port->attrs.flavour) {
533 case DEVLINK_PORT_FLAVOUR_PCI_PF:
534 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER,
538 case DEVLINK_PORT_FLAVOUR_PCI_VF:
539 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER,
541 nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_VF_NUMBER,
545 case DEVLINK_PORT_FLAVOUR_PHYSICAL:
546 case DEVLINK_PORT_FLAVOUR_CPU:
547 case DEVLINK_PORT_FLAVOUR_DSA:
548 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_NUMBER,
549 attrs->phys.port_number))
553 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_GROUP,
554 attrs->phys.port_number))
556 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_SUBPORT_NUMBER,
557 attrs->phys.split_subport_number))
566 static int devlink_nl_port_fill(struct sk_buff *msg, struct devlink *devlink,
567 struct devlink_port *devlink_port,
568 enum devlink_command cmd, u32 portid,
573 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
577 if (devlink_nl_put_handle(msg, devlink))
578 goto nla_put_failure;
579 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
580 goto nla_put_failure;
582 spin_lock_bh(&devlink_port->type_lock);
583 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_TYPE, devlink_port->type))
584 goto nla_put_failure_type_locked;
585 if (devlink_port->desired_type != DEVLINK_PORT_TYPE_NOTSET &&
586 nla_put_u16(msg, DEVLINK_ATTR_PORT_DESIRED_TYPE,
587 devlink_port->desired_type))
588 goto nla_put_failure_type_locked;
589 if (devlink_port->type == DEVLINK_PORT_TYPE_ETH) {
590 struct net_device *netdev = devlink_port->type_dev;
593 (nla_put_u32(msg, DEVLINK_ATTR_PORT_NETDEV_IFINDEX,
595 nla_put_string(msg, DEVLINK_ATTR_PORT_NETDEV_NAME,
597 goto nla_put_failure_type_locked;
599 if (devlink_port->type == DEVLINK_PORT_TYPE_IB) {
600 struct ib_device *ibdev = devlink_port->type_dev;
603 nla_put_string(msg, DEVLINK_ATTR_PORT_IBDEV_NAME,
605 goto nla_put_failure_type_locked;
607 spin_unlock_bh(&devlink_port->type_lock);
608 if (devlink_nl_port_attrs_put(msg, devlink_port))
609 goto nla_put_failure;
611 genlmsg_end(msg, hdr);
614 nla_put_failure_type_locked:
615 spin_unlock_bh(&devlink_port->type_lock);
617 genlmsg_cancel(msg, hdr);
621 static void devlink_port_notify(struct devlink_port *devlink_port,
622 enum devlink_command cmd)
624 struct devlink *devlink = devlink_port->devlink;
628 if (!devlink_port->registered)
631 WARN_ON(cmd != DEVLINK_CMD_PORT_NEW && cmd != DEVLINK_CMD_PORT_DEL);
633 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
637 err = devlink_nl_port_fill(msg, devlink, devlink_port, cmd, 0, 0, 0);
643 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
644 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
647 static int devlink_nl_cmd_get_doit(struct sk_buff *skb, struct genl_info *info)
649 struct devlink *devlink = info->user_ptr[0];
653 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
657 err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
658 info->snd_portid, info->snd_seq, 0);
664 return genlmsg_reply(msg, info);
667 static int devlink_nl_cmd_get_dumpit(struct sk_buff *msg,
668 struct netlink_callback *cb)
670 struct devlink *devlink;
671 int start = cb->args[0];
675 mutex_lock(&devlink_mutex);
676 list_for_each_entry(devlink, &devlink_list, list) {
677 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
683 err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
684 NETLINK_CB(cb->skb).portid,
685 cb->nlh->nlmsg_seq, NLM_F_MULTI);
691 mutex_unlock(&devlink_mutex);
697 static int devlink_nl_cmd_port_get_doit(struct sk_buff *skb,
698 struct genl_info *info)
700 struct devlink_port *devlink_port = info->user_ptr[0];
701 struct devlink *devlink = devlink_port->devlink;
705 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
709 err = devlink_nl_port_fill(msg, devlink, devlink_port,
710 DEVLINK_CMD_PORT_NEW,
711 info->snd_portid, info->snd_seq, 0);
717 return genlmsg_reply(msg, info);
720 static int devlink_nl_cmd_port_get_dumpit(struct sk_buff *msg,
721 struct netlink_callback *cb)
723 struct devlink *devlink;
724 struct devlink_port *devlink_port;
725 int start = cb->args[0];
729 mutex_lock(&devlink_mutex);
730 list_for_each_entry(devlink, &devlink_list, list) {
731 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
733 mutex_lock(&devlink->lock);
734 list_for_each_entry(devlink_port, &devlink->port_list, list) {
739 err = devlink_nl_port_fill(msg, devlink, devlink_port,
741 NETLINK_CB(cb->skb).portid,
745 mutex_unlock(&devlink->lock);
750 mutex_unlock(&devlink->lock);
753 mutex_unlock(&devlink_mutex);
759 static int devlink_port_type_set(struct devlink *devlink,
760 struct devlink_port *devlink_port,
761 enum devlink_port_type port_type)
766 if (devlink->ops->port_type_set) {
767 if (port_type == DEVLINK_PORT_TYPE_NOTSET)
769 if (port_type == devlink_port->type)
771 err = devlink->ops->port_type_set(devlink_port, port_type);
774 devlink_port->desired_type = port_type;
775 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
781 static int devlink_nl_cmd_port_set_doit(struct sk_buff *skb,
782 struct genl_info *info)
784 struct devlink_port *devlink_port = info->user_ptr[0];
785 struct devlink *devlink = devlink_port->devlink;
788 if (info->attrs[DEVLINK_ATTR_PORT_TYPE]) {
789 enum devlink_port_type port_type;
791 port_type = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_TYPE]);
792 err = devlink_port_type_set(devlink, devlink_port, port_type);
799 static int devlink_port_split(struct devlink *devlink, u32 port_index,
800 u32 count, struct netlink_ext_ack *extack)
803 if (devlink->ops->port_split)
804 return devlink->ops->port_split(devlink, port_index, count,
809 static int devlink_nl_cmd_port_split_doit(struct sk_buff *skb,
810 struct genl_info *info)
812 struct devlink *devlink = info->user_ptr[0];
816 if (!info->attrs[DEVLINK_ATTR_PORT_INDEX] ||
817 !info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT])
820 port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
821 count = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT]);
822 return devlink_port_split(devlink, port_index, count, info->extack);
825 static int devlink_port_unsplit(struct devlink *devlink, u32 port_index,
826 struct netlink_ext_ack *extack)
829 if (devlink->ops->port_unsplit)
830 return devlink->ops->port_unsplit(devlink, port_index, extack);
834 static int devlink_nl_cmd_port_unsplit_doit(struct sk_buff *skb,
835 struct genl_info *info)
837 struct devlink *devlink = info->user_ptr[0];
840 if (!info->attrs[DEVLINK_ATTR_PORT_INDEX])
843 port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
844 return devlink_port_unsplit(devlink, port_index, info->extack);
847 static int devlink_nl_sb_fill(struct sk_buff *msg, struct devlink *devlink,
848 struct devlink_sb *devlink_sb,
849 enum devlink_command cmd, u32 portid,
854 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
858 if (devlink_nl_put_handle(msg, devlink))
859 goto nla_put_failure;
860 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
861 goto nla_put_failure;
862 if (nla_put_u32(msg, DEVLINK_ATTR_SB_SIZE, devlink_sb->size))
863 goto nla_put_failure;
864 if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_POOL_COUNT,
865 devlink_sb->ingress_pools_count))
866 goto nla_put_failure;
867 if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_POOL_COUNT,
868 devlink_sb->egress_pools_count))
869 goto nla_put_failure;
870 if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_TC_COUNT,
871 devlink_sb->ingress_tc_count))
872 goto nla_put_failure;
873 if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_TC_COUNT,
874 devlink_sb->egress_tc_count))
875 goto nla_put_failure;
877 genlmsg_end(msg, hdr);
881 genlmsg_cancel(msg, hdr);
885 static int devlink_nl_cmd_sb_get_doit(struct sk_buff *skb,
886 struct genl_info *info)
888 struct devlink *devlink = info->user_ptr[0];
889 struct devlink_sb *devlink_sb = info->user_ptr[1];
893 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
897 err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
899 info->snd_portid, info->snd_seq, 0);
905 return genlmsg_reply(msg, info);
908 static int devlink_nl_cmd_sb_get_dumpit(struct sk_buff *msg,
909 struct netlink_callback *cb)
911 struct devlink *devlink;
912 struct devlink_sb *devlink_sb;
913 int start = cb->args[0];
917 mutex_lock(&devlink_mutex);
918 list_for_each_entry(devlink, &devlink_list, list) {
919 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
921 mutex_lock(&devlink->lock);
922 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
927 err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
929 NETLINK_CB(cb->skb).portid,
933 mutex_unlock(&devlink->lock);
938 mutex_unlock(&devlink->lock);
941 mutex_unlock(&devlink_mutex);
947 static int devlink_nl_sb_pool_fill(struct sk_buff *msg, struct devlink *devlink,
948 struct devlink_sb *devlink_sb,
949 u16 pool_index, enum devlink_command cmd,
950 u32 portid, u32 seq, int flags)
952 struct devlink_sb_pool_info pool_info;
956 err = devlink->ops->sb_pool_get(devlink, devlink_sb->index,
957 pool_index, &pool_info);
961 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
965 if (devlink_nl_put_handle(msg, devlink))
966 goto nla_put_failure;
967 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
968 goto nla_put_failure;
969 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
970 goto nla_put_failure;
971 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_info.pool_type))
972 goto nla_put_failure;
973 if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_SIZE, pool_info.size))
974 goto nla_put_failure;
975 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE,
976 pool_info.threshold_type))
977 goto nla_put_failure;
978 if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_CELL_SIZE,
979 pool_info.cell_size))
980 goto nla_put_failure;
982 genlmsg_end(msg, hdr);
986 genlmsg_cancel(msg, hdr);
990 static int devlink_nl_cmd_sb_pool_get_doit(struct sk_buff *skb,
991 struct genl_info *info)
993 struct devlink *devlink = info->user_ptr[0];
994 struct devlink_sb *devlink_sb = info->user_ptr[1];
999 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1004 if (!devlink->ops->sb_pool_get)
1007 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1011 err = devlink_nl_sb_pool_fill(msg, devlink, devlink_sb, pool_index,
1012 DEVLINK_CMD_SB_POOL_NEW,
1013 info->snd_portid, info->snd_seq, 0);
1019 return genlmsg_reply(msg, info);
1022 static int __sb_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
1023 struct devlink *devlink,
1024 struct devlink_sb *devlink_sb,
1025 u32 portid, u32 seq)
1027 u16 pool_count = devlink_sb_pool_count(devlink_sb);
1031 for (pool_index = 0; pool_index < pool_count; pool_index++) {
1032 if (*p_idx < start) {
1036 err = devlink_nl_sb_pool_fill(msg, devlink,
1039 DEVLINK_CMD_SB_POOL_NEW,
1040 portid, seq, NLM_F_MULTI);
1048 static int devlink_nl_cmd_sb_pool_get_dumpit(struct sk_buff *msg,
1049 struct netlink_callback *cb)
1051 struct devlink *devlink;
1052 struct devlink_sb *devlink_sb;
1053 int start = cb->args[0];
1057 mutex_lock(&devlink_mutex);
1058 list_for_each_entry(devlink, &devlink_list, list) {
1059 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
1060 !devlink->ops->sb_pool_get)
1062 mutex_lock(&devlink->lock);
1063 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
1064 err = __sb_pool_get_dumpit(msg, start, &idx, devlink,
1066 NETLINK_CB(cb->skb).portid,
1067 cb->nlh->nlmsg_seq);
1068 if (err && err != -EOPNOTSUPP) {
1069 mutex_unlock(&devlink->lock);
1073 mutex_unlock(&devlink->lock);
1076 mutex_unlock(&devlink_mutex);
1078 if (err != -EMSGSIZE)
1085 static int devlink_sb_pool_set(struct devlink *devlink, unsigned int sb_index,
1086 u16 pool_index, u32 size,
1087 enum devlink_sb_threshold_type threshold_type,
1088 struct netlink_ext_ack *extack)
1091 const struct devlink_ops *ops = devlink->ops;
1093 if (ops->sb_pool_set)
1094 return ops->sb_pool_set(devlink, sb_index, pool_index,
1095 size, threshold_type, extack);
1099 static int devlink_nl_cmd_sb_pool_set_doit(struct sk_buff *skb,
1100 struct genl_info *info)
1102 struct devlink *devlink = info->user_ptr[0];
1103 struct devlink_sb *devlink_sb = info->user_ptr[1];
1104 enum devlink_sb_threshold_type threshold_type;
1109 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1114 err = devlink_sb_th_type_get_from_info(info, &threshold_type);
1118 if (!info->attrs[DEVLINK_ATTR_SB_POOL_SIZE])
1121 size = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_POOL_SIZE]);
1122 return devlink_sb_pool_set(devlink, devlink_sb->index,
1123 pool_index, size, threshold_type,
1127 static int devlink_nl_sb_port_pool_fill(struct sk_buff *msg,
1128 struct devlink *devlink,
1129 struct devlink_port *devlink_port,
1130 struct devlink_sb *devlink_sb,
1132 enum devlink_command cmd,
1133 u32 portid, u32 seq, int flags)
1135 const struct devlink_ops *ops = devlink->ops;
1140 err = ops->sb_port_pool_get(devlink_port, devlink_sb->index,
1141 pool_index, &threshold);
1145 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1149 if (devlink_nl_put_handle(msg, devlink))
1150 goto nla_put_failure;
1151 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
1152 goto nla_put_failure;
1153 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
1154 goto nla_put_failure;
1155 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
1156 goto nla_put_failure;
1157 if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
1158 goto nla_put_failure;
1160 if (ops->sb_occ_port_pool_get) {
1164 err = ops->sb_occ_port_pool_get(devlink_port, devlink_sb->index,
1165 pool_index, &cur, &max);
1166 if (err && err != -EOPNOTSUPP)
1169 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
1170 goto nla_put_failure;
1171 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
1172 goto nla_put_failure;
1176 genlmsg_end(msg, hdr);
1180 genlmsg_cancel(msg, hdr);
1184 static int devlink_nl_cmd_sb_port_pool_get_doit(struct sk_buff *skb,
1185 struct genl_info *info)
1187 struct devlink_port *devlink_port = info->user_ptr[0];
1188 struct devlink *devlink = devlink_port->devlink;
1189 struct devlink_sb *devlink_sb = info->user_ptr[1];
1190 struct sk_buff *msg;
1194 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1199 if (!devlink->ops->sb_port_pool_get)
1202 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1206 err = devlink_nl_sb_port_pool_fill(msg, devlink, devlink_port,
1207 devlink_sb, pool_index,
1208 DEVLINK_CMD_SB_PORT_POOL_NEW,
1209 info->snd_portid, info->snd_seq, 0);
1215 return genlmsg_reply(msg, info);
1218 static int __sb_port_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
1219 struct devlink *devlink,
1220 struct devlink_sb *devlink_sb,
1221 u32 portid, u32 seq)
1223 struct devlink_port *devlink_port;
1224 u16 pool_count = devlink_sb_pool_count(devlink_sb);
1228 list_for_each_entry(devlink_port, &devlink->port_list, list) {
1229 for (pool_index = 0; pool_index < pool_count; pool_index++) {
1230 if (*p_idx < start) {
1234 err = devlink_nl_sb_port_pool_fill(msg, devlink,
1238 DEVLINK_CMD_SB_PORT_POOL_NEW,
1249 static int devlink_nl_cmd_sb_port_pool_get_dumpit(struct sk_buff *msg,
1250 struct netlink_callback *cb)
1252 struct devlink *devlink;
1253 struct devlink_sb *devlink_sb;
1254 int start = cb->args[0];
1258 mutex_lock(&devlink_mutex);
1259 list_for_each_entry(devlink, &devlink_list, list) {
1260 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
1261 !devlink->ops->sb_port_pool_get)
1263 mutex_lock(&devlink->lock);
1264 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
1265 err = __sb_port_pool_get_dumpit(msg, start, &idx,
1266 devlink, devlink_sb,
1267 NETLINK_CB(cb->skb).portid,
1268 cb->nlh->nlmsg_seq);
1269 if (err && err != -EOPNOTSUPP) {
1270 mutex_unlock(&devlink->lock);
1274 mutex_unlock(&devlink->lock);
1277 mutex_unlock(&devlink_mutex);
1279 if (err != -EMSGSIZE)
1286 static int devlink_sb_port_pool_set(struct devlink_port *devlink_port,
1287 unsigned int sb_index, u16 pool_index,
1289 struct netlink_ext_ack *extack)
1292 const struct devlink_ops *ops = devlink_port->devlink->ops;
1294 if (ops->sb_port_pool_set)
1295 return ops->sb_port_pool_set(devlink_port, sb_index,
1296 pool_index, threshold, extack);
1300 static int devlink_nl_cmd_sb_port_pool_set_doit(struct sk_buff *skb,
1301 struct genl_info *info)
1303 struct devlink_port *devlink_port = info->user_ptr[0];
1304 struct devlink_sb *devlink_sb = info->user_ptr[1];
1309 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1314 if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD])
1317 threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
1318 return devlink_sb_port_pool_set(devlink_port, devlink_sb->index,
1319 pool_index, threshold, info->extack);
1323 devlink_nl_sb_tc_pool_bind_fill(struct sk_buff *msg, struct devlink *devlink,
1324 struct devlink_port *devlink_port,
1325 struct devlink_sb *devlink_sb, u16 tc_index,
1326 enum devlink_sb_pool_type pool_type,
1327 enum devlink_command cmd,
1328 u32 portid, u32 seq, int flags)
1330 const struct devlink_ops *ops = devlink->ops;
1336 err = ops->sb_tc_pool_bind_get(devlink_port, devlink_sb->index,
1337 tc_index, pool_type,
1338 &pool_index, &threshold);
1342 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1346 if (devlink_nl_put_handle(msg, devlink))
1347 goto nla_put_failure;
1348 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
1349 goto nla_put_failure;
1350 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
1351 goto nla_put_failure;
1352 if (nla_put_u16(msg, DEVLINK_ATTR_SB_TC_INDEX, tc_index))
1353 goto nla_put_failure;
1354 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_type))
1355 goto nla_put_failure;
1356 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
1357 goto nla_put_failure;
1358 if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
1359 goto nla_put_failure;
1361 if (ops->sb_occ_tc_port_bind_get) {
1365 err = ops->sb_occ_tc_port_bind_get(devlink_port,
1367 tc_index, pool_type,
1369 if (err && err != -EOPNOTSUPP)
1372 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
1373 goto nla_put_failure;
1374 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
1375 goto nla_put_failure;
1379 genlmsg_end(msg, hdr);
1383 genlmsg_cancel(msg, hdr);
1387 static int devlink_nl_cmd_sb_tc_pool_bind_get_doit(struct sk_buff *skb,
1388 struct genl_info *info)
1390 struct devlink_port *devlink_port = info->user_ptr[0];
1391 struct devlink *devlink = devlink_port->devlink;
1392 struct devlink_sb *devlink_sb = info->user_ptr[1];
1393 struct sk_buff *msg;
1394 enum devlink_sb_pool_type pool_type;
1398 err = devlink_sb_pool_type_get_from_info(info, &pool_type);
1402 err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
1403 pool_type, &tc_index);
1407 if (!devlink->ops->sb_tc_pool_bind_get)
1410 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1414 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink, devlink_port,
1415 devlink_sb, tc_index, pool_type,
1416 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
1424 return genlmsg_reply(msg, info);
1427 static int __sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
1428 int start, int *p_idx,
1429 struct devlink *devlink,
1430 struct devlink_sb *devlink_sb,
1431 u32 portid, u32 seq)
1433 struct devlink_port *devlink_port;
1437 list_for_each_entry(devlink_port, &devlink->port_list, list) {
1439 tc_index < devlink_sb->ingress_tc_count; tc_index++) {
1440 if (*p_idx < start) {
1444 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
1448 DEVLINK_SB_POOL_TYPE_INGRESS,
1449 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
1457 tc_index < devlink_sb->egress_tc_count; tc_index++) {
1458 if (*p_idx < start) {
1462 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
1466 DEVLINK_SB_POOL_TYPE_EGRESS,
1467 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
1479 devlink_nl_cmd_sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
1480 struct netlink_callback *cb)
1482 struct devlink *devlink;
1483 struct devlink_sb *devlink_sb;
1484 int start = cb->args[0];
1488 mutex_lock(&devlink_mutex);
1489 list_for_each_entry(devlink, &devlink_list, list) {
1490 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
1491 !devlink->ops->sb_tc_pool_bind_get)
1494 mutex_lock(&devlink->lock);
1495 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
1496 err = __sb_tc_pool_bind_get_dumpit(msg, start, &idx,
1499 NETLINK_CB(cb->skb).portid,
1500 cb->nlh->nlmsg_seq);
1501 if (err && err != -EOPNOTSUPP) {
1502 mutex_unlock(&devlink->lock);
1506 mutex_unlock(&devlink->lock);
1509 mutex_unlock(&devlink_mutex);
1511 if (err != -EMSGSIZE)
1518 static int devlink_sb_tc_pool_bind_set(struct devlink_port *devlink_port,
1519 unsigned int sb_index, u16 tc_index,
1520 enum devlink_sb_pool_type pool_type,
1521 u16 pool_index, u32 threshold,
1522 struct netlink_ext_ack *extack)
1525 const struct devlink_ops *ops = devlink_port->devlink->ops;
1527 if (ops->sb_tc_pool_bind_set)
1528 return ops->sb_tc_pool_bind_set(devlink_port, sb_index,
1529 tc_index, pool_type,
1530 pool_index, threshold, extack);
1534 static int devlink_nl_cmd_sb_tc_pool_bind_set_doit(struct sk_buff *skb,
1535 struct genl_info *info)
1537 struct devlink_port *devlink_port = info->user_ptr[0];
1538 struct devlink_sb *devlink_sb = info->user_ptr[1];
1539 enum devlink_sb_pool_type pool_type;
1545 err = devlink_sb_pool_type_get_from_info(info, &pool_type);
1549 err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
1550 pool_type, &tc_index);
1554 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1559 if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD])
1562 threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
1563 return devlink_sb_tc_pool_bind_set(devlink_port, devlink_sb->index,
1564 tc_index, pool_type,
1565 pool_index, threshold, info->extack);
1568 static int devlink_nl_cmd_sb_occ_snapshot_doit(struct sk_buff *skb,
1569 struct genl_info *info)
1571 struct devlink *devlink = info->user_ptr[0];
1572 struct devlink_sb *devlink_sb = info->user_ptr[1];
1573 const struct devlink_ops *ops = devlink->ops;
1575 if (ops->sb_occ_snapshot)
1576 return ops->sb_occ_snapshot(devlink, devlink_sb->index);
1580 static int devlink_nl_cmd_sb_occ_max_clear_doit(struct sk_buff *skb,
1581 struct genl_info *info)
1583 struct devlink *devlink = info->user_ptr[0];
1584 struct devlink_sb *devlink_sb = info->user_ptr[1];
1585 const struct devlink_ops *ops = devlink->ops;
1587 if (ops->sb_occ_max_clear)
1588 return ops->sb_occ_max_clear(devlink, devlink_sb->index);
1592 static int devlink_nl_eswitch_fill(struct sk_buff *msg, struct devlink *devlink,
1593 enum devlink_command cmd, u32 portid,
1596 const struct devlink_ops *ops = devlink->ops;
1597 enum devlink_eswitch_encap_mode encap_mode;
1603 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1607 err = devlink_nl_put_handle(msg, devlink);
1609 goto nla_put_failure;
1611 if (ops->eswitch_mode_get) {
1612 err = ops->eswitch_mode_get(devlink, &mode);
1614 goto nla_put_failure;
1615 err = nla_put_u16(msg, DEVLINK_ATTR_ESWITCH_MODE, mode);
1617 goto nla_put_failure;
1620 if (ops->eswitch_inline_mode_get) {
1621 err = ops->eswitch_inline_mode_get(devlink, &inline_mode);
1623 goto nla_put_failure;
1624 err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_INLINE_MODE,
1627 goto nla_put_failure;
1630 if (ops->eswitch_encap_mode_get) {
1631 err = ops->eswitch_encap_mode_get(devlink, &encap_mode);
1633 goto nla_put_failure;
1634 err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_ENCAP_MODE, encap_mode);
1636 goto nla_put_failure;
1639 genlmsg_end(msg, hdr);
1643 genlmsg_cancel(msg, hdr);
1647 static int devlink_nl_cmd_eswitch_get_doit(struct sk_buff *skb,
1648 struct genl_info *info)
1650 struct devlink *devlink = info->user_ptr[0];
1651 struct sk_buff *msg;
1654 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1658 err = devlink_nl_eswitch_fill(msg, devlink, DEVLINK_CMD_ESWITCH_GET,
1659 info->snd_portid, info->snd_seq, 0);
1666 return genlmsg_reply(msg, info);
1669 static int devlink_nl_cmd_eswitch_set_doit(struct sk_buff *skb,
1670 struct genl_info *info)
1672 struct devlink *devlink = info->user_ptr[0];
1673 const struct devlink_ops *ops = devlink->ops;
1674 enum devlink_eswitch_encap_mode encap_mode;
1679 if (info->attrs[DEVLINK_ATTR_ESWITCH_MODE]) {
1680 if (!ops->eswitch_mode_set)
1682 mode = nla_get_u16(info->attrs[DEVLINK_ATTR_ESWITCH_MODE]);
1683 err = ops->eswitch_mode_set(devlink, mode, info->extack);
1688 if (info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]) {
1689 if (!ops->eswitch_inline_mode_set)
1691 inline_mode = nla_get_u8(
1692 info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]);
1693 err = ops->eswitch_inline_mode_set(devlink, inline_mode,
1699 if (info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]) {
1700 if (!ops->eswitch_encap_mode_set)
1702 encap_mode = nla_get_u8(info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]);
1703 err = ops->eswitch_encap_mode_set(devlink, encap_mode,
1712 int devlink_dpipe_match_put(struct sk_buff *skb,
1713 struct devlink_dpipe_match *match)
1715 struct devlink_dpipe_header *header = match->header;
1716 struct devlink_dpipe_field *field = &header->fields[match->field_id];
1717 struct nlattr *match_attr;
1719 match_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_MATCH);
1723 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_MATCH_TYPE, match->type) ||
1724 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, match->header_index) ||
1725 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
1726 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
1727 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
1728 goto nla_put_failure;
1730 nla_nest_end(skb, match_attr);
1734 nla_nest_cancel(skb, match_attr);
1737 EXPORT_SYMBOL_GPL(devlink_dpipe_match_put);
1739 static int devlink_dpipe_matches_put(struct devlink_dpipe_table *table,
1740 struct sk_buff *skb)
1742 struct nlattr *matches_attr;
1744 matches_attr = nla_nest_start_noflag(skb,
1745 DEVLINK_ATTR_DPIPE_TABLE_MATCHES);
1749 if (table->table_ops->matches_dump(table->priv, skb))
1750 goto nla_put_failure;
1752 nla_nest_end(skb, matches_attr);
1756 nla_nest_cancel(skb, matches_attr);
1760 int devlink_dpipe_action_put(struct sk_buff *skb,
1761 struct devlink_dpipe_action *action)
1763 struct devlink_dpipe_header *header = action->header;
1764 struct devlink_dpipe_field *field = &header->fields[action->field_id];
1765 struct nlattr *action_attr;
1767 action_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ACTION);
1771 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_ACTION_TYPE, action->type) ||
1772 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, action->header_index) ||
1773 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
1774 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
1775 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
1776 goto nla_put_failure;
1778 nla_nest_end(skb, action_attr);
1782 nla_nest_cancel(skb, action_attr);
1785 EXPORT_SYMBOL_GPL(devlink_dpipe_action_put);
1787 static int devlink_dpipe_actions_put(struct devlink_dpipe_table *table,
1788 struct sk_buff *skb)
1790 struct nlattr *actions_attr;
1792 actions_attr = nla_nest_start_noflag(skb,
1793 DEVLINK_ATTR_DPIPE_TABLE_ACTIONS);
1797 if (table->table_ops->actions_dump(table->priv, skb))
1798 goto nla_put_failure;
1800 nla_nest_end(skb, actions_attr);
1804 nla_nest_cancel(skb, actions_attr);
1808 static int devlink_dpipe_table_put(struct sk_buff *skb,
1809 struct devlink_dpipe_table *table)
1811 struct nlattr *table_attr;
1814 table_size = table->table_ops->size_get(table->priv);
1815 table_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLE);
1819 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_TABLE_NAME, table->name) ||
1820 nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_SIZE, table_size,
1822 goto nla_put_failure;
1823 if (nla_put_u8(skb, DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED,
1824 table->counters_enabled))
1825 goto nla_put_failure;
1827 if (table->resource_valid) {
1828 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_ID,
1829 table->resource_id, DEVLINK_ATTR_PAD) ||
1830 nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_UNITS,
1831 table->resource_units, DEVLINK_ATTR_PAD))
1832 goto nla_put_failure;
1834 if (devlink_dpipe_matches_put(table, skb))
1835 goto nla_put_failure;
1837 if (devlink_dpipe_actions_put(table, skb))
1838 goto nla_put_failure;
1840 nla_nest_end(skb, table_attr);
1844 nla_nest_cancel(skb, table_attr);
1848 static int devlink_dpipe_send_and_alloc_skb(struct sk_buff **pskb,
1849 struct genl_info *info)
1854 err = genlmsg_reply(*pskb, info);
1858 *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
1864 static int devlink_dpipe_tables_fill(struct genl_info *info,
1865 enum devlink_command cmd, int flags,
1866 struct list_head *dpipe_tables,
1867 const char *table_name)
1869 struct devlink *devlink = info->user_ptr[0];
1870 struct devlink_dpipe_table *table;
1871 struct nlattr *tables_attr;
1872 struct sk_buff *skb = NULL;
1873 struct nlmsghdr *nlh;
1879 table = list_first_entry(dpipe_tables,
1880 struct devlink_dpipe_table, list);
1882 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
1886 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
1887 &devlink_nl_family, NLM_F_MULTI, cmd);
1893 if (devlink_nl_put_handle(skb, devlink))
1894 goto nla_put_failure;
1895 tables_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLES);
1897 goto nla_put_failure;
1901 list_for_each_entry_from(table, dpipe_tables, list) {
1903 err = devlink_dpipe_table_put(skb, table);
1911 if (!strcmp(table->name, table_name)) {
1912 err = devlink_dpipe_table_put(skb, table);
1920 nla_nest_end(skb, tables_attr);
1921 genlmsg_end(skb, hdr);
1926 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
1927 NLMSG_DONE, 0, flags | NLM_F_MULTI);
1929 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
1935 return genlmsg_reply(skb, info);
1944 static int devlink_nl_cmd_dpipe_table_get(struct sk_buff *skb,
1945 struct genl_info *info)
1947 struct devlink *devlink = info->user_ptr[0];
1948 const char *table_name = NULL;
1950 if (info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
1951 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
1953 return devlink_dpipe_tables_fill(info, DEVLINK_CMD_DPIPE_TABLE_GET, 0,
1954 &devlink->dpipe_table_list,
1958 static int devlink_dpipe_value_put(struct sk_buff *skb,
1959 struct devlink_dpipe_value *value)
1961 if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE,
1962 value->value_size, value->value))
1965 if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE_MASK,
1966 value->value_size, value->mask))
1968 if (value->mapping_valid)
1969 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_VALUE_MAPPING,
1970 value->mapping_value))
1975 static int devlink_dpipe_action_value_put(struct sk_buff *skb,
1976 struct devlink_dpipe_value *value)
1980 if (devlink_dpipe_action_put(skb, value->action))
1982 if (devlink_dpipe_value_put(skb, value))
1987 static int devlink_dpipe_action_values_put(struct sk_buff *skb,
1988 struct devlink_dpipe_value *values,
1989 unsigned int values_count)
1991 struct nlattr *action_attr;
1995 for (i = 0; i < values_count; i++) {
1996 action_attr = nla_nest_start_noflag(skb,
1997 DEVLINK_ATTR_DPIPE_ACTION_VALUE);
2000 err = devlink_dpipe_action_value_put(skb, &values[i]);
2002 goto err_action_value_put;
2003 nla_nest_end(skb, action_attr);
2007 err_action_value_put:
2008 nla_nest_cancel(skb, action_attr);
2012 static int devlink_dpipe_match_value_put(struct sk_buff *skb,
2013 struct devlink_dpipe_value *value)
2017 if (devlink_dpipe_match_put(skb, value->match))
2019 if (devlink_dpipe_value_put(skb, value))
2024 static int devlink_dpipe_match_values_put(struct sk_buff *skb,
2025 struct devlink_dpipe_value *values,
2026 unsigned int values_count)
2028 struct nlattr *match_attr;
2032 for (i = 0; i < values_count; i++) {
2033 match_attr = nla_nest_start_noflag(skb,
2034 DEVLINK_ATTR_DPIPE_MATCH_VALUE);
2037 err = devlink_dpipe_match_value_put(skb, &values[i]);
2039 goto err_match_value_put;
2040 nla_nest_end(skb, match_attr);
2044 err_match_value_put:
2045 nla_nest_cancel(skb, match_attr);
2049 static int devlink_dpipe_entry_put(struct sk_buff *skb,
2050 struct devlink_dpipe_entry *entry)
2052 struct nlattr *entry_attr, *matches_attr, *actions_attr;
2055 entry_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ENTRY);
2059 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_INDEX, entry->index,
2061 goto nla_put_failure;
2062 if (entry->counter_valid)
2063 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_COUNTER,
2064 entry->counter, DEVLINK_ATTR_PAD))
2065 goto nla_put_failure;
2067 matches_attr = nla_nest_start_noflag(skb,
2068 DEVLINK_ATTR_DPIPE_ENTRY_MATCH_VALUES);
2070 goto nla_put_failure;
2072 err = devlink_dpipe_match_values_put(skb, entry->match_values,
2073 entry->match_values_count);
2075 nla_nest_cancel(skb, matches_attr);
2076 goto err_match_values_put;
2078 nla_nest_end(skb, matches_attr);
2080 actions_attr = nla_nest_start_noflag(skb,
2081 DEVLINK_ATTR_DPIPE_ENTRY_ACTION_VALUES);
2083 goto nla_put_failure;
2085 err = devlink_dpipe_action_values_put(skb, entry->action_values,
2086 entry->action_values_count);
2088 nla_nest_cancel(skb, actions_attr);
2089 goto err_action_values_put;
2091 nla_nest_end(skb, actions_attr);
2093 nla_nest_end(skb, entry_attr);
2098 err_match_values_put:
2099 err_action_values_put:
2100 nla_nest_cancel(skb, entry_attr);
2104 static struct devlink_dpipe_table *
2105 devlink_dpipe_table_find(struct list_head *dpipe_tables,
2106 const char *table_name)
2108 struct devlink_dpipe_table *table;
2110 list_for_each_entry_rcu(table, dpipe_tables, list) {
2111 if (!strcmp(table->name, table_name))
2117 int devlink_dpipe_entry_ctx_prepare(struct devlink_dpipe_dump_ctx *dump_ctx)
2119 struct devlink *devlink;
2122 err = devlink_dpipe_send_and_alloc_skb(&dump_ctx->skb,
2127 dump_ctx->hdr = genlmsg_put(dump_ctx->skb,
2128 dump_ctx->info->snd_portid,
2129 dump_ctx->info->snd_seq,
2130 &devlink_nl_family, NLM_F_MULTI,
2133 goto nla_put_failure;
2135 devlink = dump_ctx->info->user_ptr[0];
2136 if (devlink_nl_put_handle(dump_ctx->skb, devlink))
2137 goto nla_put_failure;
2138 dump_ctx->nest = nla_nest_start_noflag(dump_ctx->skb,
2139 DEVLINK_ATTR_DPIPE_ENTRIES);
2140 if (!dump_ctx->nest)
2141 goto nla_put_failure;
2145 nlmsg_free(dump_ctx->skb);
2148 EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_prepare);
2150 int devlink_dpipe_entry_ctx_append(struct devlink_dpipe_dump_ctx *dump_ctx,
2151 struct devlink_dpipe_entry *entry)
2153 return devlink_dpipe_entry_put(dump_ctx->skb, entry);
2155 EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_append);
2157 int devlink_dpipe_entry_ctx_close(struct devlink_dpipe_dump_ctx *dump_ctx)
2159 nla_nest_end(dump_ctx->skb, dump_ctx->nest);
2160 genlmsg_end(dump_ctx->skb, dump_ctx->hdr);
2163 EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_close);
2165 void devlink_dpipe_entry_clear(struct devlink_dpipe_entry *entry)
2168 unsigned int value_count, value_index;
2169 struct devlink_dpipe_value *value;
2171 value = entry->action_values;
2172 value_count = entry->action_values_count;
2173 for (value_index = 0; value_index < value_count; value_index++) {
2174 kfree(value[value_index].value);
2175 kfree(value[value_index].mask);
2178 value = entry->match_values;
2179 value_count = entry->match_values_count;
2180 for (value_index = 0; value_index < value_count; value_index++) {
2181 kfree(value[value_index].value);
2182 kfree(value[value_index].mask);
2185 EXPORT_SYMBOL(devlink_dpipe_entry_clear);
2187 static int devlink_dpipe_entries_fill(struct genl_info *info,
2188 enum devlink_command cmd, int flags,
2189 struct devlink_dpipe_table *table)
2191 struct devlink_dpipe_dump_ctx dump_ctx;
2192 struct nlmsghdr *nlh;
2195 dump_ctx.skb = NULL;
2197 dump_ctx.info = info;
2199 err = table->table_ops->entries_dump(table->priv,
2200 table->counters_enabled,
2206 nlh = nlmsg_put(dump_ctx.skb, info->snd_portid, info->snd_seq,
2207 NLMSG_DONE, 0, flags | NLM_F_MULTI);
2209 err = devlink_dpipe_send_and_alloc_skb(&dump_ctx.skb, info);
2214 return genlmsg_reply(dump_ctx.skb, info);
2217 static int devlink_nl_cmd_dpipe_entries_get(struct sk_buff *skb,
2218 struct genl_info *info)
2220 struct devlink *devlink = info->user_ptr[0];
2221 struct devlink_dpipe_table *table;
2222 const char *table_name;
2224 if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
2227 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
2228 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2233 if (!table->table_ops->entries_dump)
2236 return devlink_dpipe_entries_fill(info, DEVLINK_CMD_DPIPE_ENTRIES_GET,
2240 static int devlink_dpipe_fields_put(struct sk_buff *skb,
2241 const struct devlink_dpipe_header *header)
2243 struct devlink_dpipe_field *field;
2244 struct nlattr *field_attr;
2247 for (i = 0; i < header->fields_count; i++) {
2248 field = &header->fields[i];
2249 field_attr = nla_nest_start_noflag(skb,
2250 DEVLINK_ATTR_DPIPE_FIELD);
2253 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_FIELD_NAME, field->name) ||
2254 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
2255 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_BITWIDTH, field->bitwidth) ||
2256 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_MAPPING_TYPE, field->mapping_type))
2257 goto nla_put_failure;
2258 nla_nest_end(skb, field_attr);
2263 nla_nest_cancel(skb, field_attr);
2267 static int devlink_dpipe_header_put(struct sk_buff *skb,
2268 struct devlink_dpipe_header *header)
2270 struct nlattr *fields_attr, *header_attr;
2273 header_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADER);
2277 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_HEADER_NAME, header->name) ||
2278 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
2279 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
2280 goto nla_put_failure;
2282 fields_attr = nla_nest_start_noflag(skb,
2283 DEVLINK_ATTR_DPIPE_HEADER_FIELDS);
2285 goto nla_put_failure;
2287 err = devlink_dpipe_fields_put(skb, header);
2289 nla_nest_cancel(skb, fields_attr);
2290 goto nla_put_failure;
2292 nla_nest_end(skb, fields_attr);
2293 nla_nest_end(skb, header_attr);
2298 nla_nest_cancel(skb, header_attr);
2302 static int devlink_dpipe_headers_fill(struct genl_info *info,
2303 enum devlink_command cmd, int flags,
2304 struct devlink_dpipe_headers *
2307 struct devlink *devlink = info->user_ptr[0];
2308 struct nlattr *headers_attr;
2309 struct sk_buff *skb = NULL;
2310 struct nlmsghdr *nlh;
2317 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2321 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
2322 &devlink_nl_family, NLM_F_MULTI, cmd);
2328 if (devlink_nl_put_handle(skb, devlink))
2329 goto nla_put_failure;
2330 headers_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADERS);
2332 goto nla_put_failure;
2335 for (; i < dpipe_headers->headers_count; i++) {
2336 err = devlink_dpipe_header_put(skb, dpipe_headers->headers[i]);
2344 nla_nest_end(skb, headers_attr);
2345 genlmsg_end(skb, hdr);
2346 if (i != dpipe_headers->headers_count)
2350 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
2351 NLMSG_DONE, 0, flags | NLM_F_MULTI);
2353 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2358 return genlmsg_reply(skb, info);
2367 static int devlink_nl_cmd_dpipe_headers_get(struct sk_buff *skb,
2368 struct genl_info *info)
2370 struct devlink *devlink = info->user_ptr[0];
2372 if (!devlink->dpipe_headers)
2374 return devlink_dpipe_headers_fill(info, DEVLINK_CMD_DPIPE_HEADERS_GET,
2375 0, devlink->dpipe_headers);
2378 static int devlink_dpipe_table_counters_set(struct devlink *devlink,
2379 const char *table_name,
2382 struct devlink_dpipe_table *table;
2384 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2389 if (table->counter_control_extern)
2392 if (!(table->counters_enabled ^ enable))
2395 table->counters_enabled = enable;
2396 if (table->table_ops->counters_set_update)
2397 table->table_ops->counters_set_update(table->priv, enable);
2401 static int devlink_nl_cmd_dpipe_table_counters_set(struct sk_buff *skb,
2402 struct genl_info *info)
2404 struct devlink *devlink = info->user_ptr[0];
2405 const char *table_name;
2406 bool counters_enable;
2408 if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME] ||
2409 !info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED])
2412 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
2413 counters_enable = !!nla_get_u8(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED]);
2415 return devlink_dpipe_table_counters_set(devlink, table_name,
2419 static struct devlink_resource *
2420 devlink_resource_find(struct devlink *devlink,
2421 struct devlink_resource *resource, u64 resource_id)
2423 struct list_head *resource_list;
2426 resource_list = &resource->resource_list;
2428 resource_list = &devlink->resource_list;
2430 list_for_each_entry(resource, resource_list, list) {
2431 struct devlink_resource *child_resource;
2433 if (resource->id == resource_id)
2436 child_resource = devlink_resource_find(devlink, resource,
2439 return child_resource;
2445 devlink_resource_validate_children(struct devlink_resource *resource)
2447 struct devlink_resource *child_resource;
2448 bool size_valid = true;
2451 if (list_empty(&resource->resource_list))
2454 list_for_each_entry(child_resource, &resource->resource_list, list)
2455 parts_size += child_resource->size_new;
2457 if (parts_size > resource->size_new)
2460 resource->size_valid = size_valid;
2464 devlink_resource_validate_size(struct devlink_resource *resource, u64 size,
2465 struct netlink_ext_ack *extack)
2470 if (size > resource->size_params.size_max) {
2471 NL_SET_ERR_MSG_MOD(extack, "Size larger than maximum");
2475 if (size < resource->size_params.size_min) {
2476 NL_SET_ERR_MSG_MOD(extack, "Size smaller than minimum");
2480 div64_u64_rem(size, resource->size_params.size_granularity, &reminder);
2482 NL_SET_ERR_MSG_MOD(extack, "Wrong granularity");
2489 static int devlink_nl_cmd_resource_set(struct sk_buff *skb,
2490 struct genl_info *info)
2492 struct devlink *devlink = info->user_ptr[0];
2493 struct devlink_resource *resource;
2498 if (!info->attrs[DEVLINK_ATTR_RESOURCE_ID] ||
2499 !info->attrs[DEVLINK_ATTR_RESOURCE_SIZE])
2501 resource_id = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_ID]);
2503 resource = devlink_resource_find(devlink, NULL, resource_id);
2507 size = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_SIZE]);
2508 err = devlink_resource_validate_size(resource, size, info->extack);
2512 resource->size_new = size;
2513 devlink_resource_validate_children(resource);
2514 if (resource->parent)
2515 devlink_resource_validate_children(resource->parent);
2520 devlink_resource_size_params_put(struct devlink_resource *resource,
2521 struct sk_buff *skb)
2523 struct devlink_resource_size_params *size_params;
2525 size_params = &resource->size_params;
2526 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_GRAN,
2527 size_params->size_granularity, DEVLINK_ATTR_PAD) ||
2528 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MAX,
2529 size_params->size_max, DEVLINK_ATTR_PAD) ||
2530 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MIN,
2531 size_params->size_min, DEVLINK_ATTR_PAD) ||
2532 nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_UNIT, size_params->unit))
2537 static int devlink_resource_occ_put(struct devlink_resource *resource,
2538 struct sk_buff *skb)
2540 if (!resource->occ_get)
2542 return nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_OCC,
2543 resource->occ_get(resource->occ_get_priv),
2547 static int devlink_resource_put(struct devlink *devlink, struct sk_buff *skb,
2548 struct devlink_resource *resource)
2550 struct devlink_resource *child_resource;
2551 struct nlattr *child_resource_attr;
2552 struct nlattr *resource_attr;
2554 resource_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_RESOURCE);
2558 if (nla_put_string(skb, DEVLINK_ATTR_RESOURCE_NAME, resource->name) ||
2559 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE, resource->size,
2560 DEVLINK_ATTR_PAD) ||
2561 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_ID, resource->id,
2563 goto nla_put_failure;
2564 if (resource->size != resource->size_new)
2565 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_NEW,
2566 resource->size_new, DEVLINK_ATTR_PAD);
2567 if (devlink_resource_occ_put(resource, skb))
2568 goto nla_put_failure;
2569 if (devlink_resource_size_params_put(resource, skb))
2570 goto nla_put_failure;
2571 if (list_empty(&resource->resource_list))
2574 if (nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_SIZE_VALID,
2575 resource->size_valid))
2576 goto nla_put_failure;
2578 child_resource_attr = nla_nest_start_noflag(skb,
2579 DEVLINK_ATTR_RESOURCE_LIST);
2580 if (!child_resource_attr)
2581 goto nla_put_failure;
2583 list_for_each_entry(child_resource, &resource->resource_list, list) {
2584 if (devlink_resource_put(devlink, skb, child_resource))
2585 goto resource_put_failure;
2588 nla_nest_end(skb, child_resource_attr);
2590 nla_nest_end(skb, resource_attr);
2593 resource_put_failure:
2594 nla_nest_cancel(skb, child_resource_attr);
2596 nla_nest_cancel(skb, resource_attr);
2600 static int devlink_resource_fill(struct genl_info *info,
2601 enum devlink_command cmd, int flags)
2603 struct devlink *devlink = info->user_ptr[0];
2604 struct devlink_resource *resource;
2605 struct nlattr *resources_attr;
2606 struct sk_buff *skb = NULL;
2607 struct nlmsghdr *nlh;
2613 resource = list_first_entry(&devlink->resource_list,
2614 struct devlink_resource, list);
2616 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2620 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
2621 &devlink_nl_family, NLM_F_MULTI, cmd);
2627 if (devlink_nl_put_handle(skb, devlink))
2628 goto nla_put_failure;
2630 resources_attr = nla_nest_start_noflag(skb,
2631 DEVLINK_ATTR_RESOURCE_LIST);
2632 if (!resources_attr)
2633 goto nla_put_failure;
2637 list_for_each_entry_from(resource, &devlink->resource_list, list) {
2638 err = devlink_resource_put(devlink, skb, resource);
2641 goto err_resource_put;
2647 nla_nest_end(skb, resources_attr);
2648 genlmsg_end(skb, hdr);
2652 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
2653 NLMSG_DONE, 0, flags | NLM_F_MULTI);
2655 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2660 return genlmsg_reply(skb, info);
2669 static int devlink_nl_cmd_resource_dump(struct sk_buff *skb,
2670 struct genl_info *info)
2672 struct devlink *devlink = info->user_ptr[0];
2674 if (list_empty(&devlink->resource_list))
2677 return devlink_resource_fill(info, DEVLINK_CMD_RESOURCE_DUMP, 0);
2681 devlink_resources_validate(struct devlink *devlink,
2682 struct devlink_resource *resource,
2683 struct genl_info *info)
2685 struct list_head *resource_list;
2689 resource_list = &resource->resource_list;
2691 resource_list = &devlink->resource_list;
2693 list_for_each_entry(resource, resource_list, list) {
2694 if (!resource->size_valid)
2696 err = devlink_resources_validate(devlink, resource, info);
2703 static struct net *devlink_netns_get(struct sk_buff *skb,
2704 struct genl_info *info)
2706 struct nlattr *netns_pid_attr = info->attrs[DEVLINK_ATTR_NETNS_PID];
2707 struct nlattr *netns_fd_attr = info->attrs[DEVLINK_ATTR_NETNS_FD];
2708 struct nlattr *netns_id_attr = info->attrs[DEVLINK_ATTR_NETNS_ID];
2711 if (!!netns_pid_attr + !!netns_fd_attr + !!netns_id_attr > 1) {
2712 NL_SET_ERR_MSG(info->extack, "multiple netns identifying attributes specified");
2713 return ERR_PTR(-EINVAL);
2716 if (netns_pid_attr) {
2717 net = get_net_ns_by_pid(nla_get_u32(netns_pid_attr));
2718 } else if (netns_fd_attr) {
2719 net = get_net_ns_by_fd(nla_get_u32(netns_fd_attr));
2720 } else if (netns_id_attr) {
2721 net = get_net_ns_by_id(sock_net(skb->sk),
2722 nla_get_u32(netns_id_attr));
2724 net = ERR_PTR(-EINVAL);
2727 net = ERR_PTR(-EINVAL);
2730 NL_SET_ERR_MSG(info->extack, "Unknown network namespace");
2731 return ERR_PTR(-EINVAL);
2733 if (!netlink_ns_capable(skb, net->user_ns, CAP_NET_ADMIN)) {
2735 return ERR_PTR(-EPERM);
2740 static void devlink_param_notify(struct devlink *devlink,
2741 unsigned int port_index,
2742 struct devlink_param_item *param_item,
2743 enum devlink_command cmd);
2745 static void devlink_reload_netns_change(struct devlink *devlink,
2746 struct net *dest_net)
2748 struct devlink_param_item *param_item;
2750 /* Userspace needs to be notified about devlink objects
2751 * removed from original and entering new network namespace.
2752 * The rest of the devlink objects are re-created during
2753 * reload process so the notifications are generated separatelly.
2756 list_for_each_entry(param_item, &devlink->param_list, list)
2757 devlink_param_notify(devlink, 0, param_item,
2758 DEVLINK_CMD_PARAM_DEL);
2759 devlink_notify(devlink, DEVLINK_CMD_DEL);
2761 __devlink_net_set(devlink, dest_net);
2763 devlink_notify(devlink, DEVLINK_CMD_NEW);
2764 list_for_each_entry(param_item, &devlink->param_list, list)
2765 devlink_param_notify(devlink, 0, param_item,
2766 DEVLINK_CMD_PARAM_NEW);
2769 static bool devlink_reload_supported(struct devlink *devlink)
2771 return devlink->ops->reload_down && devlink->ops->reload_up;
2774 static void devlink_reload_failed_set(struct devlink *devlink,
2777 if (devlink->reload_failed == reload_failed)
2779 devlink->reload_failed = reload_failed;
2780 devlink_notify(devlink, DEVLINK_CMD_NEW);
2783 bool devlink_is_reload_failed(const struct devlink *devlink)
2785 return devlink->reload_failed;
2787 EXPORT_SYMBOL_GPL(devlink_is_reload_failed);
2789 static int devlink_reload(struct devlink *devlink, struct net *dest_net,
2790 struct netlink_ext_ack *extack)
2794 err = devlink->ops->reload_down(devlink, !!dest_net, extack);
2798 if (dest_net && !net_eq(dest_net, devlink_net(devlink)))
2799 devlink_reload_netns_change(devlink, dest_net);
2801 err = devlink->ops->reload_up(devlink, extack);
2802 devlink_reload_failed_set(devlink, !!err);
2806 static int devlink_nl_cmd_reload(struct sk_buff *skb, struct genl_info *info)
2808 struct devlink *devlink = info->user_ptr[0];
2809 struct net *dest_net = NULL;
2812 if (!devlink_reload_supported(devlink))
2815 err = devlink_resources_validate(devlink, NULL, info);
2817 NL_SET_ERR_MSG_MOD(info->extack, "resources size validation failed");
2821 if (info->attrs[DEVLINK_ATTR_NETNS_PID] ||
2822 info->attrs[DEVLINK_ATTR_NETNS_FD] ||
2823 info->attrs[DEVLINK_ATTR_NETNS_ID]) {
2824 dest_net = devlink_netns_get(skb, info);
2825 if (IS_ERR(dest_net))
2826 return PTR_ERR(dest_net);
2829 err = devlink_reload(devlink, dest_net, info->extack);
2837 static int devlink_nl_flash_update_fill(struct sk_buff *msg,
2838 struct devlink *devlink,
2839 enum devlink_command cmd,
2840 const char *status_msg,
2841 const char *component,
2842 unsigned long done, unsigned long total)
2846 hdr = genlmsg_put(msg, 0, 0, &devlink_nl_family, 0, cmd);
2850 if (devlink_nl_put_handle(msg, devlink))
2851 goto nla_put_failure;
2853 if (cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS)
2857 nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_MSG,
2859 goto nla_put_failure;
2861 nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_COMPONENT,
2863 goto nla_put_failure;
2864 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_DONE,
2865 done, DEVLINK_ATTR_PAD))
2866 goto nla_put_failure;
2867 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TOTAL,
2868 total, DEVLINK_ATTR_PAD))
2869 goto nla_put_failure;
2872 genlmsg_end(msg, hdr);
2876 genlmsg_cancel(msg, hdr);
2880 static void __devlink_flash_update_notify(struct devlink *devlink,
2881 enum devlink_command cmd,
2882 const char *status_msg,
2883 const char *component,
2885 unsigned long total)
2887 struct sk_buff *msg;
2890 WARN_ON(cmd != DEVLINK_CMD_FLASH_UPDATE &&
2891 cmd != DEVLINK_CMD_FLASH_UPDATE_END &&
2892 cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS);
2894 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2898 err = devlink_nl_flash_update_fill(msg, devlink, cmd, status_msg,
2899 component, done, total);
2903 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
2904 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
2911 void devlink_flash_update_begin_notify(struct devlink *devlink)
2913 __devlink_flash_update_notify(devlink,
2914 DEVLINK_CMD_FLASH_UPDATE,
2917 EXPORT_SYMBOL_GPL(devlink_flash_update_begin_notify);
2919 void devlink_flash_update_end_notify(struct devlink *devlink)
2921 __devlink_flash_update_notify(devlink,
2922 DEVLINK_CMD_FLASH_UPDATE_END,
2925 EXPORT_SYMBOL_GPL(devlink_flash_update_end_notify);
2927 void devlink_flash_update_status_notify(struct devlink *devlink,
2928 const char *status_msg,
2929 const char *component,
2931 unsigned long total)
2933 __devlink_flash_update_notify(devlink,
2934 DEVLINK_CMD_FLASH_UPDATE_STATUS,
2935 status_msg, component, done, total);
2937 EXPORT_SYMBOL_GPL(devlink_flash_update_status_notify);
2939 static int devlink_nl_cmd_flash_update(struct sk_buff *skb,
2940 struct genl_info *info)
2942 struct devlink *devlink = info->user_ptr[0];
2943 const char *file_name, *component;
2944 struct nlattr *nla_component;
2946 if (!devlink->ops->flash_update)
2949 if (!info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME])
2951 file_name = nla_data(info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME]);
2953 nla_component = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_COMPONENT];
2954 component = nla_component ? nla_data(nla_component) : NULL;
2956 return devlink->ops->flash_update(devlink, file_name, component,
2960 static const struct devlink_param devlink_param_generic[] = {
2962 .id = DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET,
2963 .name = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_NAME,
2964 .type = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_TYPE,
2967 .id = DEVLINK_PARAM_GENERIC_ID_MAX_MACS,
2968 .name = DEVLINK_PARAM_GENERIC_MAX_MACS_NAME,
2969 .type = DEVLINK_PARAM_GENERIC_MAX_MACS_TYPE,
2972 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_SRIOV,
2973 .name = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_NAME,
2974 .type = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_TYPE,
2977 .id = DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT,
2978 .name = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_NAME,
2979 .type = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_TYPE,
2982 .id = DEVLINK_PARAM_GENERIC_ID_IGNORE_ARI,
2983 .name = DEVLINK_PARAM_GENERIC_IGNORE_ARI_NAME,
2984 .type = DEVLINK_PARAM_GENERIC_IGNORE_ARI_TYPE,
2987 .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX,
2988 .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_NAME,
2989 .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_TYPE,
2992 .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN,
2993 .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_NAME,
2994 .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_TYPE,
2997 .id = DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY,
2998 .name = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_NAME,
2999 .type = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_TYPE,
3002 .id = DEVLINK_PARAM_GENERIC_ID_RESET_DEV_ON_DRV_PROBE,
3003 .name = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_NAME,
3004 .type = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_TYPE,
3008 static int devlink_param_generic_verify(const struct devlink_param *param)
3010 /* verify it match generic parameter by id and name */
3011 if (param->id > DEVLINK_PARAM_GENERIC_ID_MAX)
3013 if (strcmp(param->name, devlink_param_generic[param->id].name))
3016 WARN_ON(param->type != devlink_param_generic[param->id].type);
3021 static int devlink_param_driver_verify(const struct devlink_param *param)
3025 if (param->id <= DEVLINK_PARAM_GENERIC_ID_MAX)
3027 /* verify no such name in generic params */
3028 for (i = 0; i <= DEVLINK_PARAM_GENERIC_ID_MAX; i++)
3029 if (!strcmp(param->name, devlink_param_generic[i].name))
3035 static struct devlink_param_item *
3036 devlink_param_find_by_name(struct list_head *param_list,
3037 const char *param_name)
3039 struct devlink_param_item *param_item;
3041 list_for_each_entry(param_item, param_list, list)
3042 if (!strcmp(param_item->param->name, param_name))
3047 static struct devlink_param_item *
3048 devlink_param_find_by_id(struct list_head *param_list, u32 param_id)
3050 struct devlink_param_item *param_item;
3052 list_for_each_entry(param_item, param_list, list)
3053 if (param_item->param->id == param_id)
3059 devlink_param_cmode_is_supported(const struct devlink_param *param,
3060 enum devlink_param_cmode cmode)
3062 return test_bit(cmode, ¶m->supported_cmodes);
3065 static int devlink_param_get(struct devlink *devlink,
3066 const struct devlink_param *param,
3067 struct devlink_param_gset_ctx *ctx)
3071 return param->get(devlink, param->id, ctx);
3074 static int devlink_param_set(struct devlink *devlink,
3075 const struct devlink_param *param,
3076 struct devlink_param_gset_ctx *ctx)
3080 return param->set(devlink, param->id, ctx);
3084 devlink_param_type_to_nla_type(enum devlink_param_type param_type)
3086 switch (param_type) {
3087 case DEVLINK_PARAM_TYPE_U8:
3089 case DEVLINK_PARAM_TYPE_U16:
3091 case DEVLINK_PARAM_TYPE_U32:
3093 case DEVLINK_PARAM_TYPE_STRING:
3095 case DEVLINK_PARAM_TYPE_BOOL:
3103 devlink_nl_param_value_fill_one(struct sk_buff *msg,
3104 enum devlink_param_type type,
3105 enum devlink_param_cmode cmode,
3106 union devlink_param_value val)
3108 struct nlattr *param_value_attr;
3110 param_value_attr = nla_nest_start_noflag(msg,
3111 DEVLINK_ATTR_PARAM_VALUE);
3112 if (!param_value_attr)
3113 goto nla_put_failure;
3115 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_CMODE, cmode))
3116 goto value_nest_cancel;
3119 case DEVLINK_PARAM_TYPE_U8:
3120 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu8))
3121 goto value_nest_cancel;
3123 case DEVLINK_PARAM_TYPE_U16:
3124 if (nla_put_u16(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu16))
3125 goto value_nest_cancel;
3127 case DEVLINK_PARAM_TYPE_U32:
3128 if (nla_put_u32(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu32))
3129 goto value_nest_cancel;
3131 case DEVLINK_PARAM_TYPE_STRING:
3132 if (nla_put_string(msg, DEVLINK_ATTR_PARAM_VALUE_DATA,
3134 goto value_nest_cancel;
3136 case DEVLINK_PARAM_TYPE_BOOL:
3138 nla_put_flag(msg, DEVLINK_ATTR_PARAM_VALUE_DATA))
3139 goto value_nest_cancel;
3143 nla_nest_end(msg, param_value_attr);
3147 nla_nest_cancel(msg, param_value_attr);
3152 static int devlink_nl_param_fill(struct sk_buff *msg, struct devlink *devlink,
3153 unsigned int port_index,
3154 struct devlink_param_item *param_item,
3155 enum devlink_command cmd,
3156 u32 portid, u32 seq, int flags)
3158 union devlink_param_value param_value[DEVLINK_PARAM_CMODE_MAX + 1];
3159 bool param_value_set[DEVLINK_PARAM_CMODE_MAX + 1] = {};
3160 const struct devlink_param *param = param_item->param;
3161 struct devlink_param_gset_ctx ctx;
3162 struct nlattr *param_values_list;
3163 struct nlattr *param_attr;
3169 /* Get value from driver part to driverinit configuration mode */
3170 for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
3171 if (!devlink_param_cmode_is_supported(param, i))
3173 if (i == DEVLINK_PARAM_CMODE_DRIVERINIT) {
3174 if (!param_item->driverinit_value_valid)
3176 param_value[i] = param_item->driverinit_value;
3178 if (!param_item->published)
3181 err = devlink_param_get(devlink, param, &ctx);
3184 param_value[i] = ctx.val;
3186 param_value_set[i] = true;
3189 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
3193 if (devlink_nl_put_handle(msg, devlink))
3194 goto genlmsg_cancel;
3196 if (cmd == DEVLINK_CMD_PORT_PARAM_GET ||
3197 cmd == DEVLINK_CMD_PORT_PARAM_NEW ||
3198 cmd == DEVLINK_CMD_PORT_PARAM_DEL)
3199 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, port_index))
3200 goto genlmsg_cancel;
3202 param_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PARAM);
3204 goto genlmsg_cancel;
3205 if (nla_put_string(msg, DEVLINK_ATTR_PARAM_NAME, param->name))
3206 goto param_nest_cancel;
3207 if (param->generic && nla_put_flag(msg, DEVLINK_ATTR_PARAM_GENERIC))
3208 goto param_nest_cancel;
3210 nla_type = devlink_param_type_to_nla_type(param->type);
3212 goto param_nest_cancel;
3213 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_TYPE, nla_type))
3214 goto param_nest_cancel;
3216 param_values_list = nla_nest_start_noflag(msg,
3217 DEVLINK_ATTR_PARAM_VALUES_LIST);
3218 if (!param_values_list)
3219 goto param_nest_cancel;
3221 for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
3222 if (!param_value_set[i])
3224 err = devlink_nl_param_value_fill_one(msg, param->type,
3227 goto values_list_nest_cancel;
3230 nla_nest_end(msg, param_values_list);
3231 nla_nest_end(msg, param_attr);
3232 genlmsg_end(msg, hdr);
3235 values_list_nest_cancel:
3236 nla_nest_end(msg, param_values_list);
3238 nla_nest_cancel(msg, param_attr);
3240 genlmsg_cancel(msg, hdr);
3244 static void devlink_param_notify(struct devlink *devlink,
3245 unsigned int port_index,
3246 struct devlink_param_item *param_item,
3247 enum devlink_command cmd)
3249 struct sk_buff *msg;
3252 WARN_ON(cmd != DEVLINK_CMD_PARAM_NEW && cmd != DEVLINK_CMD_PARAM_DEL &&
3253 cmd != DEVLINK_CMD_PORT_PARAM_NEW &&
3254 cmd != DEVLINK_CMD_PORT_PARAM_DEL);
3256 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3259 err = devlink_nl_param_fill(msg, devlink, port_index, param_item, cmd,
3266 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
3267 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
3270 static int devlink_nl_cmd_param_get_dumpit(struct sk_buff *msg,
3271 struct netlink_callback *cb)
3273 struct devlink_param_item *param_item;
3274 struct devlink *devlink;
3275 int start = cb->args[0];
3279 mutex_lock(&devlink_mutex);
3280 list_for_each_entry(devlink, &devlink_list, list) {
3281 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
3283 mutex_lock(&devlink->lock);
3284 list_for_each_entry(param_item, &devlink->param_list, list) {
3289 err = devlink_nl_param_fill(msg, devlink, 0, param_item,
3290 DEVLINK_CMD_PARAM_GET,
3291 NETLINK_CB(cb->skb).portid,
3294 if (err && err != -EOPNOTSUPP) {
3295 mutex_unlock(&devlink->lock);
3300 mutex_unlock(&devlink->lock);
3303 mutex_unlock(&devlink_mutex);
3305 if (err != -EMSGSIZE)
3313 devlink_param_type_get_from_info(struct genl_info *info,
3314 enum devlink_param_type *param_type)
3316 if (!info->attrs[DEVLINK_ATTR_PARAM_TYPE])
3319 switch (nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_TYPE])) {
3321 *param_type = DEVLINK_PARAM_TYPE_U8;
3324 *param_type = DEVLINK_PARAM_TYPE_U16;
3327 *param_type = DEVLINK_PARAM_TYPE_U32;
3330 *param_type = DEVLINK_PARAM_TYPE_STRING;
3333 *param_type = DEVLINK_PARAM_TYPE_BOOL;
3343 devlink_param_value_get_from_info(const struct devlink_param *param,
3344 struct genl_info *info,
3345 union devlink_param_value *value)
3349 if (param->type != DEVLINK_PARAM_TYPE_BOOL &&
3350 !info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA])
3353 switch (param->type) {
3354 case DEVLINK_PARAM_TYPE_U8:
3355 value->vu8 = nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]);
3357 case DEVLINK_PARAM_TYPE_U16:
3358 value->vu16 = nla_get_u16(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]);
3360 case DEVLINK_PARAM_TYPE_U32:
3361 value->vu32 = nla_get_u32(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]);
3363 case DEVLINK_PARAM_TYPE_STRING:
3364 len = strnlen(nla_data(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]),
3365 nla_len(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]));
3366 if (len == nla_len(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]) ||
3367 len >= __DEVLINK_PARAM_MAX_STRING_VALUE)
3370 nla_data(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]));
3372 case DEVLINK_PARAM_TYPE_BOOL:
3373 value->vbool = info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA] ?
3380 static struct devlink_param_item *
3381 devlink_param_get_from_info(struct list_head *param_list,
3382 struct genl_info *info)
3386 if (!info->attrs[DEVLINK_ATTR_PARAM_NAME])
3389 param_name = nla_data(info->attrs[DEVLINK_ATTR_PARAM_NAME]);
3390 return devlink_param_find_by_name(param_list, param_name);
3393 static int devlink_nl_cmd_param_get_doit(struct sk_buff *skb,
3394 struct genl_info *info)
3396 struct devlink *devlink = info->user_ptr[0];
3397 struct devlink_param_item *param_item;
3398 struct sk_buff *msg;
3401 param_item = devlink_param_get_from_info(&devlink->param_list, info);
3405 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3409 err = devlink_nl_param_fill(msg, devlink, 0, param_item,
3410 DEVLINK_CMD_PARAM_GET,
3411 info->snd_portid, info->snd_seq, 0);
3417 return genlmsg_reply(msg, info);
3420 static int __devlink_nl_cmd_param_set_doit(struct devlink *devlink,
3421 unsigned int port_index,
3422 struct list_head *param_list,
3423 struct genl_info *info,
3424 enum devlink_command cmd)
3426 enum devlink_param_type param_type;
3427 struct devlink_param_gset_ctx ctx;
3428 enum devlink_param_cmode cmode;
3429 struct devlink_param_item *param_item;
3430 const struct devlink_param *param;
3431 union devlink_param_value value;
3434 param_item = devlink_param_get_from_info(param_list, info);
3437 param = param_item->param;
3438 err = devlink_param_type_get_from_info(info, ¶m_type);
3441 if (param_type != param->type)
3443 err = devlink_param_value_get_from_info(param, info, &value);
3446 if (param->validate) {
3447 err = param->validate(devlink, param->id, value, info->extack);
3452 if (!info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE])
3454 cmode = nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE]);
3455 if (!devlink_param_cmode_is_supported(param, cmode))
3458 if (cmode == DEVLINK_PARAM_CMODE_DRIVERINIT) {
3459 if (param->type == DEVLINK_PARAM_TYPE_STRING)
3460 strcpy(param_item->driverinit_value.vstr, value.vstr);
3462 param_item->driverinit_value = value;
3463 param_item->driverinit_value_valid = true;
3469 err = devlink_param_set(devlink, param, &ctx);
3474 devlink_param_notify(devlink, port_index, param_item, cmd);
3478 static int devlink_nl_cmd_param_set_doit(struct sk_buff *skb,
3479 struct genl_info *info)
3481 struct devlink *devlink = info->user_ptr[0];
3483 return __devlink_nl_cmd_param_set_doit(devlink, 0, &devlink->param_list,
3484 info, DEVLINK_CMD_PARAM_NEW);
3487 static int devlink_param_register_one(struct devlink *devlink,
3488 unsigned int port_index,
3489 struct list_head *param_list,
3490 const struct devlink_param *param,
3491 enum devlink_command cmd)
3493 struct devlink_param_item *param_item;
3495 if (devlink_param_find_by_name(param_list, param->name))
3498 if (param->supported_cmodes == BIT(DEVLINK_PARAM_CMODE_DRIVERINIT))
3499 WARN_ON(param->get || param->set);
3501 WARN_ON(!param->get || !param->set);
3503 param_item = kzalloc(sizeof(*param_item), GFP_KERNEL);
3506 param_item->param = param;
3508 list_add_tail(¶m_item->list, param_list);
3509 devlink_param_notify(devlink, port_index, param_item, cmd);
3513 static void devlink_param_unregister_one(struct devlink *devlink,
3514 unsigned int port_index,
3515 struct list_head *param_list,
3516 const struct devlink_param *param,
3517 enum devlink_command cmd)
3519 struct devlink_param_item *param_item;
3521 param_item = devlink_param_find_by_name(param_list, param->name);
3522 WARN_ON(!param_item);
3523 devlink_param_notify(devlink, port_index, param_item, cmd);
3524 list_del(¶m_item->list);
3528 static int devlink_nl_cmd_port_param_get_dumpit(struct sk_buff *msg,
3529 struct netlink_callback *cb)
3531 struct devlink_param_item *param_item;
3532 struct devlink_port *devlink_port;
3533 struct devlink *devlink;
3534 int start = cb->args[0];
3538 mutex_lock(&devlink_mutex);
3539 list_for_each_entry(devlink, &devlink_list, list) {
3540 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
3542 mutex_lock(&devlink->lock);
3543 list_for_each_entry(devlink_port, &devlink->port_list, list) {
3544 list_for_each_entry(param_item,
3545 &devlink_port->param_list, list) {
3550 err = devlink_nl_param_fill(msg,
3551 devlink_port->devlink,
3552 devlink_port->index, param_item,
3553 DEVLINK_CMD_PORT_PARAM_GET,
3554 NETLINK_CB(cb->skb).portid,
3557 if (err && err != -EOPNOTSUPP) {
3558 mutex_unlock(&devlink->lock);
3564 mutex_unlock(&devlink->lock);
3567 mutex_unlock(&devlink_mutex);
3569 if (err != -EMSGSIZE)
3576 static int devlink_nl_cmd_port_param_get_doit(struct sk_buff *skb,
3577 struct genl_info *info)
3579 struct devlink_port *devlink_port = info->user_ptr[0];
3580 struct devlink_param_item *param_item;
3581 struct sk_buff *msg;
3584 param_item = devlink_param_get_from_info(&devlink_port->param_list,
3589 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3593 err = devlink_nl_param_fill(msg, devlink_port->devlink,
3594 devlink_port->index, param_item,
3595 DEVLINK_CMD_PORT_PARAM_GET,
3596 info->snd_portid, info->snd_seq, 0);
3602 return genlmsg_reply(msg, info);
3605 static int devlink_nl_cmd_port_param_set_doit(struct sk_buff *skb,
3606 struct genl_info *info)
3608 struct devlink_port *devlink_port = info->user_ptr[0];
3610 return __devlink_nl_cmd_param_set_doit(devlink_port->devlink,
3611 devlink_port->index,
3612 &devlink_port->param_list, info,
3613 DEVLINK_CMD_PORT_PARAM_NEW);
3616 static int devlink_nl_region_snapshot_id_put(struct sk_buff *msg,
3617 struct devlink *devlink,
3618 struct devlink_snapshot *snapshot)
3620 struct nlattr *snap_attr;
3623 snap_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_SNAPSHOT);
3627 err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID, snapshot->id);
3629 goto nla_put_failure;
3631 nla_nest_end(msg, snap_attr);
3635 nla_nest_cancel(msg, snap_attr);
3639 static int devlink_nl_region_snapshots_id_put(struct sk_buff *msg,
3640 struct devlink *devlink,
3641 struct devlink_region *region)
3643 struct devlink_snapshot *snapshot;
3644 struct nlattr *snapshots_attr;
3647 snapshots_attr = nla_nest_start_noflag(msg,
3648 DEVLINK_ATTR_REGION_SNAPSHOTS);
3649 if (!snapshots_attr)
3652 list_for_each_entry(snapshot, ®ion->snapshot_list, list) {
3653 err = devlink_nl_region_snapshot_id_put(msg, devlink, snapshot);
3655 goto nla_put_failure;
3658 nla_nest_end(msg, snapshots_attr);
3662 nla_nest_cancel(msg, snapshots_attr);
3666 static int devlink_nl_region_fill(struct sk_buff *msg, struct devlink *devlink,
3667 enum devlink_command cmd, u32 portid,
3669 struct devlink_region *region)
3674 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
3678 err = devlink_nl_put_handle(msg, devlink);
3680 goto nla_put_failure;
3682 err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME, region->name);
3684 goto nla_put_failure;
3686 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
3690 goto nla_put_failure;
3692 err = devlink_nl_region_snapshots_id_put(msg, devlink, region);
3694 goto nla_put_failure;
3696 genlmsg_end(msg, hdr);
3700 genlmsg_cancel(msg, hdr);
3704 static void devlink_nl_region_notify(struct devlink_region *region,
3705 struct devlink_snapshot *snapshot,
3706 enum devlink_command cmd)
3708 struct devlink *devlink = region->devlink;
3709 struct sk_buff *msg;
3713 WARN_ON(cmd != DEVLINK_CMD_REGION_NEW && cmd != DEVLINK_CMD_REGION_DEL);
3715 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3719 hdr = genlmsg_put(msg, 0, 0, &devlink_nl_family, 0, cmd);
3723 err = devlink_nl_put_handle(msg, devlink);
3725 goto out_cancel_msg;
3727 err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME,
3730 goto out_cancel_msg;
3733 err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID,
3736 goto out_cancel_msg;
3738 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
3739 region->size, DEVLINK_ATTR_PAD);
3741 goto out_cancel_msg;
3743 genlmsg_end(msg, hdr);
3745 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
3746 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
3751 genlmsg_cancel(msg, hdr);
3756 static void devlink_region_snapshot_del(struct devlink_region *region,
3757 struct devlink_snapshot *snapshot)
3759 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_DEL);
3760 region->cur_snapshots--;
3761 list_del(&snapshot->list);
3762 (*snapshot->data_destructor)(snapshot->data);
3766 static int devlink_nl_cmd_region_get_doit(struct sk_buff *skb,
3767 struct genl_info *info)
3769 struct devlink *devlink = info->user_ptr[0];
3770 struct devlink_region *region;
3771 const char *region_name;
3772 struct sk_buff *msg;
3775 if (!info->attrs[DEVLINK_ATTR_REGION_NAME])
3778 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
3779 region = devlink_region_get_by_name(devlink, region_name);
3783 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3787 err = devlink_nl_region_fill(msg, devlink, DEVLINK_CMD_REGION_GET,
3788 info->snd_portid, info->snd_seq, 0,
3795 return genlmsg_reply(msg, info);
3798 static int devlink_nl_cmd_region_get_dumpit(struct sk_buff *msg,
3799 struct netlink_callback *cb)
3801 struct devlink_region *region;
3802 struct devlink *devlink;
3803 int start = cb->args[0];
3807 mutex_lock(&devlink_mutex);
3808 list_for_each_entry(devlink, &devlink_list, list) {
3809 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
3812 mutex_lock(&devlink->lock);
3813 list_for_each_entry(region, &devlink->region_list, list) {
3818 err = devlink_nl_region_fill(msg, devlink,
3819 DEVLINK_CMD_REGION_GET,
3820 NETLINK_CB(cb->skb).portid,
3822 NLM_F_MULTI, region);
3824 mutex_unlock(&devlink->lock);
3829 mutex_unlock(&devlink->lock);
3832 mutex_unlock(&devlink_mutex);
3837 static int devlink_nl_cmd_region_del(struct sk_buff *skb,
3838 struct genl_info *info)
3840 struct devlink *devlink = info->user_ptr[0];
3841 struct devlink_snapshot *snapshot;
3842 struct devlink_region *region;
3843 const char *region_name;
3846 if (!info->attrs[DEVLINK_ATTR_REGION_NAME] ||
3847 !info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID])
3850 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
3851 snapshot_id = nla_get_u32(info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
3853 region = devlink_region_get_by_name(devlink, region_name);
3857 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
3861 devlink_region_snapshot_del(region, snapshot);
3865 static int devlink_nl_cmd_region_read_chunk_fill(struct sk_buff *msg,
3866 struct devlink *devlink,
3867 u8 *chunk, u32 chunk_size,
3870 struct nlattr *chunk_attr;
3873 chunk_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_CHUNK);
3877 err = nla_put(msg, DEVLINK_ATTR_REGION_CHUNK_DATA, chunk_size, chunk);
3879 goto nla_put_failure;
3881 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_CHUNK_ADDR, addr,
3884 goto nla_put_failure;
3886 nla_nest_end(msg, chunk_attr);
3890 nla_nest_cancel(msg, chunk_attr);
3894 #define DEVLINK_REGION_READ_CHUNK_SIZE 256
3896 static int devlink_nl_region_read_snapshot_fill(struct sk_buff *skb,
3897 struct devlink *devlink,
3898 struct devlink_region *region,
3899 struct nlattr **attrs,
3905 struct devlink_snapshot *snapshot;
3906 u64 curr_offset = start_offset;
3910 *new_offset = start_offset;
3912 snapshot_id = nla_get_u32(attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
3913 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
3917 if (end_offset > region->size || dump)
3918 end_offset = region->size;
3920 while (curr_offset < end_offset) {
3924 if (end_offset - curr_offset < DEVLINK_REGION_READ_CHUNK_SIZE)
3925 data_size = end_offset - curr_offset;
3927 data_size = DEVLINK_REGION_READ_CHUNK_SIZE;
3929 data = &snapshot->data[curr_offset];
3930 err = devlink_nl_cmd_region_read_chunk_fill(skb, devlink,
3936 curr_offset += data_size;
3938 *new_offset = curr_offset;
3943 static int devlink_nl_cmd_region_read_dumpit(struct sk_buff *skb,
3944 struct netlink_callback *cb)
3946 u64 ret_offset, start_offset, end_offset = 0;
3947 struct devlink_region *region;
3948 struct nlattr *chunks_attr;
3949 const char *region_name;
3950 struct devlink *devlink;
3951 struct nlattr **attrs;
3956 start_offset = *((u64 *)&cb->args[0]);
3958 attrs = kmalloc_array(DEVLINK_ATTR_MAX + 1, sizeof(*attrs), GFP_KERNEL);
3962 err = nlmsg_parse_deprecated(cb->nlh,
3963 GENL_HDRLEN + devlink_nl_family.hdrsize,
3964 attrs, DEVLINK_ATTR_MAX,
3965 devlink_nl_family.policy, cb->extack);
3969 mutex_lock(&devlink_mutex);
3970 devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
3971 if (IS_ERR(devlink)) {
3972 err = PTR_ERR(devlink);
3976 mutex_lock(&devlink->lock);
3978 if (!attrs[DEVLINK_ATTR_REGION_NAME] ||
3979 !attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]) {
3984 region_name = nla_data(attrs[DEVLINK_ATTR_REGION_NAME]);
3985 region = devlink_region_get_by_name(devlink, region_name);
3991 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
3992 &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI,
3993 DEVLINK_CMD_REGION_READ);
3999 err = devlink_nl_put_handle(skb, devlink);
4001 goto nla_put_failure;
4003 err = nla_put_string(skb, DEVLINK_ATTR_REGION_NAME, region_name);
4005 goto nla_put_failure;
4007 chunks_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_REGION_CHUNKS);
4010 goto nla_put_failure;
4013 if (attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR] &&
4014 attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]) {
4017 nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
4019 end_offset = nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
4020 end_offset += nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]);
4024 err = devlink_nl_region_read_snapshot_fill(skb, devlink,
4030 if (err && err != -EMSGSIZE)
4031 goto nla_put_failure;
4033 /* Check if there was any progress done to prevent infinite loop */
4034 if (ret_offset == start_offset) {
4036 goto nla_put_failure;
4039 *((u64 *)&cb->args[0]) = ret_offset;
4041 nla_nest_end(skb, chunks_attr);
4042 genlmsg_end(skb, hdr);
4043 mutex_unlock(&devlink->lock);
4044 mutex_unlock(&devlink_mutex);
4050 genlmsg_cancel(skb, hdr);
4052 mutex_unlock(&devlink->lock);
4054 mutex_unlock(&devlink_mutex);
4060 struct devlink_info_req {
4061 struct sk_buff *msg;
4064 int devlink_info_driver_name_put(struct devlink_info_req *req, const char *name)
4066 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_DRIVER_NAME, name);
4068 EXPORT_SYMBOL_GPL(devlink_info_driver_name_put);
4070 int devlink_info_serial_number_put(struct devlink_info_req *req, const char *sn)
4072 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_SERIAL_NUMBER, sn);
4074 EXPORT_SYMBOL_GPL(devlink_info_serial_number_put);
4076 static int devlink_info_version_put(struct devlink_info_req *req, int attr,
4077 const char *version_name,
4078 const char *version_value)
4080 struct nlattr *nest;
4083 nest = nla_nest_start_noflag(req->msg, attr);
4087 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_NAME,
4090 goto nla_put_failure;
4092 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_VALUE,
4095 goto nla_put_failure;
4097 nla_nest_end(req->msg, nest);
4102 nla_nest_cancel(req->msg, nest);
4106 int devlink_info_version_fixed_put(struct devlink_info_req *req,
4107 const char *version_name,
4108 const char *version_value)
4110 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_FIXED,
4111 version_name, version_value);
4113 EXPORT_SYMBOL_GPL(devlink_info_version_fixed_put);
4115 int devlink_info_version_stored_put(struct devlink_info_req *req,
4116 const char *version_name,
4117 const char *version_value)
4119 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_STORED,
4120 version_name, version_value);
4122 EXPORT_SYMBOL_GPL(devlink_info_version_stored_put);
4124 int devlink_info_version_running_put(struct devlink_info_req *req,
4125 const char *version_name,
4126 const char *version_value)
4128 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_RUNNING,
4129 version_name, version_value);
4131 EXPORT_SYMBOL_GPL(devlink_info_version_running_put);
4134 devlink_nl_info_fill(struct sk_buff *msg, struct devlink *devlink,
4135 enum devlink_command cmd, u32 portid,
4136 u32 seq, int flags, struct netlink_ext_ack *extack)
4138 struct devlink_info_req req;
4142 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
4147 if (devlink_nl_put_handle(msg, devlink))
4148 goto err_cancel_msg;
4151 err = devlink->ops->info_get(devlink, &req, extack);
4153 goto err_cancel_msg;
4155 genlmsg_end(msg, hdr);
4159 genlmsg_cancel(msg, hdr);
4163 static int devlink_nl_cmd_info_get_doit(struct sk_buff *skb,
4164 struct genl_info *info)
4166 struct devlink *devlink = info->user_ptr[0];
4167 struct sk_buff *msg;
4170 if (!devlink->ops->info_get)
4173 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4177 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
4178 info->snd_portid, info->snd_seq, 0,
4185 return genlmsg_reply(msg, info);
4188 static int devlink_nl_cmd_info_get_dumpit(struct sk_buff *msg,
4189 struct netlink_callback *cb)
4191 struct devlink *devlink;
4192 int start = cb->args[0];
4196 mutex_lock(&devlink_mutex);
4197 list_for_each_entry(devlink, &devlink_list, list) {
4198 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
4205 if (!devlink->ops->info_get) {
4210 mutex_lock(&devlink->lock);
4211 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
4212 NETLINK_CB(cb->skb).portid,
4213 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4215 mutex_unlock(&devlink->lock);
4216 if (err && err != -EOPNOTSUPP)
4220 mutex_unlock(&devlink_mutex);
4222 if (err != -EMSGSIZE)
4229 struct devlink_fmsg_item {
4230 struct list_head list;
4237 struct devlink_fmsg {
4238 struct list_head item_list;
4241 static struct devlink_fmsg *devlink_fmsg_alloc(void)
4243 struct devlink_fmsg *fmsg;
4245 fmsg = kzalloc(sizeof(*fmsg), GFP_KERNEL);
4249 INIT_LIST_HEAD(&fmsg->item_list);
4254 static void devlink_fmsg_free(struct devlink_fmsg *fmsg)
4256 struct devlink_fmsg_item *item, *tmp;
4258 list_for_each_entry_safe(item, tmp, &fmsg->item_list, list) {
4259 list_del(&item->list);
4265 static int devlink_fmsg_nest_common(struct devlink_fmsg *fmsg,
4268 struct devlink_fmsg_item *item;
4270 item = kzalloc(sizeof(*item), GFP_KERNEL);
4274 item->attrtype = attrtype;
4275 list_add_tail(&item->list, &fmsg->item_list);
4280 int devlink_fmsg_obj_nest_start(struct devlink_fmsg *fmsg)
4282 return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_OBJ_NEST_START);
4284 EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_start);
4286 static int devlink_fmsg_nest_end(struct devlink_fmsg *fmsg)
4288 return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_NEST_END);
4291 int devlink_fmsg_obj_nest_end(struct devlink_fmsg *fmsg)
4293 return devlink_fmsg_nest_end(fmsg);
4295 EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_end);
4297 #define DEVLINK_FMSG_MAX_SIZE (GENLMSG_DEFAULT_SIZE - GENL_HDRLEN - NLA_HDRLEN)
4299 static int devlink_fmsg_put_name(struct devlink_fmsg *fmsg, const char *name)
4301 struct devlink_fmsg_item *item;
4303 if (strlen(name) + 1 > DEVLINK_FMSG_MAX_SIZE)
4306 item = kzalloc(sizeof(*item) + strlen(name) + 1, GFP_KERNEL);
4310 item->nla_type = NLA_NUL_STRING;
4311 item->len = strlen(name) + 1;
4312 item->attrtype = DEVLINK_ATTR_FMSG_OBJ_NAME;
4313 memcpy(&item->value, name, item->len);
4314 list_add_tail(&item->list, &fmsg->item_list);
4319 int devlink_fmsg_pair_nest_start(struct devlink_fmsg *fmsg, const char *name)
4323 err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_PAIR_NEST_START);
4327 err = devlink_fmsg_put_name(fmsg, name);
4333 EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_start);
4335 int devlink_fmsg_pair_nest_end(struct devlink_fmsg *fmsg)
4337 return devlink_fmsg_nest_end(fmsg);
4339 EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_end);
4341 int devlink_fmsg_arr_pair_nest_start(struct devlink_fmsg *fmsg,
4346 err = devlink_fmsg_pair_nest_start(fmsg, name);
4350 err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_ARR_NEST_START);
4356 EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_start);
4358 int devlink_fmsg_arr_pair_nest_end(struct devlink_fmsg *fmsg)
4362 err = devlink_fmsg_nest_end(fmsg);
4366 err = devlink_fmsg_nest_end(fmsg);
4372 EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_end);
4374 static int devlink_fmsg_put_value(struct devlink_fmsg *fmsg,
4375 const void *value, u16 value_len,
4378 struct devlink_fmsg_item *item;
4380 if (value_len > DEVLINK_FMSG_MAX_SIZE)
4383 item = kzalloc(sizeof(*item) + value_len, GFP_KERNEL);
4387 item->nla_type = value_nla_type;
4388 item->len = value_len;
4389 item->attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
4390 memcpy(&item->value, value, item->len);
4391 list_add_tail(&item->list, &fmsg->item_list);
4396 int devlink_fmsg_bool_put(struct devlink_fmsg *fmsg, bool value)
4398 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_FLAG);
4400 EXPORT_SYMBOL_GPL(devlink_fmsg_bool_put);
4402 int devlink_fmsg_u8_put(struct devlink_fmsg *fmsg, u8 value)
4404 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U8);
4406 EXPORT_SYMBOL_GPL(devlink_fmsg_u8_put);
4408 int devlink_fmsg_u32_put(struct devlink_fmsg *fmsg, u32 value)
4410 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U32);
4412 EXPORT_SYMBOL_GPL(devlink_fmsg_u32_put);
4414 int devlink_fmsg_u64_put(struct devlink_fmsg *fmsg, u64 value)
4416 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U64);
4418 EXPORT_SYMBOL_GPL(devlink_fmsg_u64_put);
4420 int devlink_fmsg_string_put(struct devlink_fmsg *fmsg, const char *value)
4422 return devlink_fmsg_put_value(fmsg, value, strlen(value) + 1,
4425 EXPORT_SYMBOL_GPL(devlink_fmsg_string_put);
4427 int devlink_fmsg_binary_put(struct devlink_fmsg *fmsg, const void *value,
4430 return devlink_fmsg_put_value(fmsg, value, value_len, NLA_BINARY);
4432 EXPORT_SYMBOL_GPL(devlink_fmsg_binary_put);
4434 int devlink_fmsg_bool_pair_put(struct devlink_fmsg *fmsg, const char *name,
4439 err = devlink_fmsg_pair_nest_start(fmsg, name);
4443 err = devlink_fmsg_bool_put(fmsg, value);
4447 err = devlink_fmsg_pair_nest_end(fmsg);
4453 EXPORT_SYMBOL_GPL(devlink_fmsg_bool_pair_put);
4455 int devlink_fmsg_u8_pair_put(struct devlink_fmsg *fmsg, const char *name,
4460 err = devlink_fmsg_pair_nest_start(fmsg, name);
4464 err = devlink_fmsg_u8_put(fmsg, value);
4468 err = devlink_fmsg_pair_nest_end(fmsg);
4474 EXPORT_SYMBOL_GPL(devlink_fmsg_u8_pair_put);
4476 int devlink_fmsg_u32_pair_put(struct devlink_fmsg *fmsg, const char *name,
4481 err = devlink_fmsg_pair_nest_start(fmsg, name);
4485 err = devlink_fmsg_u32_put(fmsg, value);
4489 err = devlink_fmsg_pair_nest_end(fmsg);
4495 EXPORT_SYMBOL_GPL(devlink_fmsg_u32_pair_put);
4497 int devlink_fmsg_u64_pair_put(struct devlink_fmsg *fmsg, const char *name,
4502 err = devlink_fmsg_pair_nest_start(fmsg, name);
4506 err = devlink_fmsg_u64_put(fmsg, value);
4510 err = devlink_fmsg_pair_nest_end(fmsg);
4516 EXPORT_SYMBOL_GPL(devlink_fmsg_u64_pair_put);
4518 int devlink_fmsg_string_pair_put(struct devlink_fmsg *fmsg, const char *name,
4523 err = devlink_fmsg_pair_nest_start(fmsg, name);
4527 err = devlink_fmsg_string_put(fmsg, value);
4531 err = devlink_fmsg_pair_nest_end(fmsg);
4537 EXPORT_SYMBOL_GPL(devlink_fmsg_string_pair_put);
4539 int devlink_fmsg_binary_pair_put(struct devlink_fmsg *fmsg, const char *name,
4540 const void *value, u16 value_len)
4544 err = devlink_fmsg_pair_nest_start(fmsg, name);
4548 err = devlink_fmsg_binary_put(fmsg, value, value_len);
4552 err = devlink_fmsg_pair_nest_end(fmsg);
4558 EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_put);
4561 devlink_fmsg_item_fill_type(struct devlink_fmsg_item *msg, struct sk_buff *skb)
4563 switch (msg->nla_type) {
4568 case NLA_NUL_STRING:
4570 return nla_put_u8(skb, DEVLINK_ATTR_FMSG_OBJ_VALUE_TYPE,
4578 devlink_fmsg_item_fill_data(struct devlink_fmsg_item *msg, struct sk_buff *skb)
4580 int attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
4583 switch (msg->nla_type) {
4585 /* Always provide flag data, regardless of its value */
4586 tmp = *(bool *) msg->value;
4588 return nla_put_u8(skb, attrtype, tmp);
4590 return nla_put_u8(skb, attrtype, *(u8 *) msg->value);
4592 return nla_put_u32(skb, attrtype, *(u32 *) msg->value);
4594 return nla_put_u64_64bit(skb, attrtype, *(u64 *) msg->value,
4596 case NLA_NUL_STRING:
4597 return nla_put_string(skb, attrtype, (char *) &msg->value);
4599 return nla_put(skb, attrtype, msg->len, (void *) &msg->value);
4606 devlink_fmsg_prepare_skb(struct devlink_fmsg *fmsg, struct sk_buff *skb,
4609 struct devlink_fmsg_item *item;
4610 struct nlattr *fmsg_nlattr;
4614 fmsg_nlattr = nla_nest_start_noflag(skb, DEVLINK_ATTR_FMSG);
4618 list_for_each_entry(item, &fmsg->item_list, list) {
4624 switch (item->attrtype) {
4625 case DEVLINK_ATTR_FMSG_OBJ_NEST_START:
4626 case DEVLINK_ATTR_FMSG_PAIR_NEST_START:
4627 case DEVLINK_ATTR_FMSG_ARR_NEST_START:
4628 case DEVLINK_ATTR_FMSG_NEST_END:
4629 err = nla_put_flag(skb, item->attrtype);
4631 case DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA:
4632 err = devlink_fmsg_item_fill_type(item, skb);
4635 err = devlink_fmsg_item_fill_data(item, skb);
4637 case DEVLINK_ATTR_FMSG_OBJ_NAME:
4638 err = nla_put_string(skb, item->attrtype,
4639 (char *) &item->value);
4651 nla_nest_end(skb, fmsg_nlattr);
4655 static int devlink_fmsg_snd(struct devlink_fmsg *fmsg,
4656 struct genl_info *info,
4657 enum devlink_command cmd, int flags)
4659 struct nlmsghdr *nlh;
4660 struct sk_buff *skb;
4667 int tmp_index = index;
4669 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
4673 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
4674 &devlink_nl_family, flags | NLM_F_MULTI, cmd);
4677 goto nla_put_failure;
4680 err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
4683 else if (err != -EMSGSIZE || tmp_index == index)
4684 goto nla_put_failure;
4686 genlmsg_end(skb, hdr);
4687 err = genlmsg_reply(skb, info);
4692 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
4695 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
4696 NLMSG_DONE, 0, flags | NLM_F_MULTI);
4699 goto nla_put_failure;
4702 return genlmsg_reply(skb, info);
4709 static int devlink_fmsg_dumpit(struct devlink_fmsg *fmsg, struct sk_buff *skb,
4710 struct netlink_callback *cb,
4711 enum devlink_command cmd)
4713 int index = cb->args[0];
4714 int tmp_index = index;
4718 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
4719 &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI, cmd);
4722 goto nla_put_failure;
4725 err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
4726 if ((err && err != -EMSGSIZE) || tmp_index == index)
4727 goto nla_put_failure;
4729 cb->args[0] = index;
4730 genlmsg_end(skb, hdr);
4734 genlmsg_cancel(skb, hdr);
4738 struct devlink_health_reporter {
4739 struct list_head list;
4741 const struct devlink_health_reporter_ops *ops;
4742 struct devlink *devlink;
4743 struct devlink_fmsg *dump_fmsg;
4744 struct mutex dump_lock; /* lock parallel read/write from dump buffers */
4745 u64 graceful_period;
4751 u64 last_recovery_ts;
4752 refcount_t refcount;
4756 devlink_health_reporter_priv(struct devlink_health_reporter *reporter)
4758 return reporter->priv;
4760 EXPORT_SYMBOL_GPL(devlink_health_reporter_priv);
4762 static struct devlink_health_reporter *
4763 devlink_health_reporter_find_by_name(struct devlink *devlink,
4764 const char *reporter_name)
4766 struct devlink_health_reporter *reporter;
4768 lockdep_assert_held(&devlink->reporters_lock);
4769 list_for_each_entry(reporter, &devlink->reporter_list, list)
4770 if (!strcmp(reporter->ops->name, reporter_name))
4776 * devlink_health_reporter_create - create devlink health reporter
4780 * @graceful_period: to avoid recovery loops, in msecs
4781 * @auto_recover: auto recover when error occurs
4784 struct devlink_health_reporter *
4785 devlink_health_reporter_create(struct devlink *devlink,
4786 const struct devlink_health_reporter_ops *ops,
4787 u64 graceful_period, bool auto_recover,
4790 struct devlink_health_reporter *reporter;
4792 mutex_lock(&devlink->reporters_lock);
4793 if (devlink_health_reporter_find_by_name(devlink, ops->name)) {
4794 reporter = ERR_PTR(-EEXIST);
4798 if (WARN_ON(auto_recover && !ops->recover) ||
4799 WARN_ON(graceful_period && !ops->recover)) {
4800 reporter = ERR_PTR(-EINVAL);
4804 reporter = kzalloc(sizeof(*reporter), GFP_KERNEL);
4806 reporter = ERR_PTR(-ENOMEM);
4810 reporter->priv = priv;
4811 reporter->ops = ops;
4812 reporter->devlink = devlink;
4813 reporter->graceful_period = graceful_period;
4814 reporter->auto_recover = auto_recover;
4815 mutex_init(&reporter->dump_lock);
4816 refcount_set(&reporter->refcount, 1);
4817 list_add_tail(&reporter->list, &devlink->reporter_list);
4819 mutex_unlock(&devlink->reporters_lock);
4822 EXPORT_SYMBOL_GPL(devlink_health_reporter_create);
4825 * devlink_health_reporter_destroy - destroy devlink health reporter
4827 * @reporter: devlink health reporter to destroy
4830 devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
4832 mutex_lock(&reporter->devlink->reporters_lock);
4833 list_del(&reporter->list);
4834 mutex_unlock(&reporter->devlink->reporters_lock);
4835 while (refcount_read(&reporter->refcount) > 1)
4837 mutex_destroy(&reporter->dump_lock);
4838 if (reporter->dump_fmsg)
4839 devlink_fmsg_free(reporter->dump_fmsg);
4842 EXPORT_SYMBOL_GPL(devlink_health_reporter_destroy);
4845 devlink_health_reporter_state_update(struct devlink_health_reporter *reporter,
4846 enum devlink_health_reporter_state state)
4848 if (WARN_ON(state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY &&
4849 state != DEVLINK_HEALTH_REPORTER_STATE_ERROR))
4852 if (reporter->health_state == state)
4855 reporter->health_state = state;
4856 trace_devlink_health_reporter_state_update(reporter->devlink,
4857 reporter->ops->name, state);
4859 EXPORT_SYMBOL_GPL(devlink_health_reporter_state_update);
4862 devlink_health_reporter_recover(struct devlink_health_reporter *reporter,
4867 if (!reporter->ops->recover)
4870 err = reporter->ops->recover(reporter, priv_ctx);
4874 reporter->recovery_count++;
4875 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_HEALTHY;
4876 reporter->last_recovery_ts = jiffies;
4882 devlink_health_dump_clear(struct devlink_health_reporter *reporter)
4884 if (!reporter->dump_fmsg)
4886 devlink_fmsg_free(reporter->dump_fmsg);
4887 reporter->dump_fmsg = NULL;
4890 static int devlink_health_do_dump(struct devlink_health_reporter *reporter,
4895 if (!reporter->ops->dump)
4898 if (reporter->dump_fmsg)
4901 reporter->dump_fmsg = devlink_fmsg_alloc();
4902 if (!reporter->dump_fmsg) {
4907 err = devlink_fmsg_obj_nest_start(reporter->dump_fmsg);
4911 err = reporter->ops->dump(reporter, reporter->dump_fmsg,
4916 err = devlink_fmsg_obj_nest_end(reporter->dump_fmsg);
4920 reporter->dump_ts = jiffies;
4925 devlink_health_dump_clear(reporter);
4929 int devlink_health_report(struct devlink_health_reporter *reporter,
4930 const char *msg, void *priv_ctx)
4932 enum devlink_health_reporter_state prev_health_state;
4933 struct devlink *devlink = reporter->devlink;
4935 /* write a log message of the current error */
4937 trace_devlink_health_report(devlink, reporter->ops->name, msg);
4938 reporter->error_count++;
4939 prev_health_state = reporter->health_state;
4940 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
4942 /* abort if the previous error wasn't recovered */
4943 if (reporter->auto_recover &&
4944 (prev_health_state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY ||
4945 jiffies - reporter->last_recovery_ts <
4946 msecs_to_jiffies(reporter->graceful_period))) {
4947 trace_devlink_health_recover_aborted(devlink,
4948 reporter->ops->name,
4949 reporter->health_state,
4951 reporter->last_recovery_ts);
4955 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
4957 mutex_lock(&reporter->dump_lock);
4958 /* store current dump of current error, for later analysis */
4959 devlink_health_do_dump(reporter, priv_ctx);
4960 mutex_unlock(&reporter->dump_lock);
4962 if (reporter->auto_recover)
4963 return devlink_health_reporter_recover(reporter, priv_ctx);
4967 EXPORT_SYMBOL_GPL(devlink_health_report);
4969 static struct devlink_health_reporter *
4970 devlink_health_reporter_get_from_attrs(struct devlink *devlink,
4971 struct nlattr **attrs)
4973 struct devlink_health_reporter *reporter;
4974 char *reporter_name;
4976 if (!attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME])
4979 reporter_name = nla_data(attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME]);
4980 mutex_lock(&devlink->reporters_lock);
4981 reporter = devlink_health_reporter_find_by_name(devlink, reporter_name);
4983 refcount_inc(&reporter->refcount);
4984 mutex_unlock(&devlink->reporters_lock);
4988 static struct devlink_health_reporter *
4989 devlink_health_reporter_get_from_info(struct devlink *devlink,
4990 struct genl_info *info)
4992 return devlink_health_reporter_get_from_attrs(devlink, info->attrs);
4995 static struct devlink_health_reporter *
4996 devlink_health_reporter_get_from_cb(struct netlink_callback *cb)
4998 struct devlink_health_reporter *reporter;
4999 struct devlink *devlink;
5000 struct nlattr **attrs;
5003 attrs = kmalloc_array(DEVLINK_ATTR_MAX + 1, sizeof(*attrs), GFP_KERNEL);
5007 err = nlmsg_parse_deprecated(cb->nlh,
5008 GENL_HDRLEN + devlink_nl_family.hdrsize,
5009 attrs, DEVLINK_ATTR_MAX,
5010 devlink_nl_family.policy, cb->extack);
5014 mutex_lock(&devlink_mutex);
5015 devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
5016 if (IS_ERR(devlink))
5019 reporter = devlink_health_reporter_get_from_attrs(devlink, attrs);
5020 mutex_unlock(&devlink_mutex);
5024 mutex_unlock(&devlink_mutex);
5031 devlink_health_reporter_put(struct devlink_health_reporter *reporter)
5033 refcount_dec(&reporter->refcount);
5037 devlink_nl_health_reporter_fill(struct sk_buff *msg,
5038 struct devlink *devlink,
5039 struct devlink_health_reporter *reporter,
5040 enum devlink_command cmd, u32 portid,
5043 struct nlattr *reporter_attr;
5046 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
5050 if (devlink_nl_put_handle(msg, devlink))
5051 goto genlmsg_cancel;
5053 reporter_attr = nla_nest_start_noflag(msg,
5054 DEVLINK_ATTR_HEALTH_REPORTER);
5056 goto genlmsg_cancel;
5057 if (nla_put_string(msg, DEVLINK_ATTR_HEALTH_REPORTER_NAME,
5058 reporter->ops->name))
5059 goto reporter_nest_cancel;
5060 if (nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_STATE,
5061 reporter->health_state))
5062 goto reporter_nest_cancel;
5063 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_ERR_COUNT,
5064 reporter->error_count, DEVLINK_ATTR_PAD))
5065 goto reporter_nest_cancel;
5066 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_RECOVER_COUNT,
5067 reporter->recovery_count, DEVLINK_ATTR_PAD))
5068 goto reporter_nest_cancel;
5069 if (reporter->ops->recover &&
5070 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD,
5071 reporter->graceful_period,
5073 goto reporter_nest_cancel;
5074 if (reporter->ops->recover &&
5075 nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER,
5076 reporter->auto_recover))
5077 goto reporter_nest_cancel;
5078 if (reporter->dump_fmsg &&
5079 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS,
5080 jiffies_to_msecs(reporter->dump_ts),
5082 goto reporter_nest_cancel;
5084 nla_nest_end(msg, reporter_attr);
5085 genlmsg_end(msg, hdr);
5088 reporter_nest_cancel:
5089 nla_nest_end(msg, reporter_attr);
5091 genlmsg_cancel(msg, hdr);
5095 static int devlink_nl_cmd_health_reporter_get_doit(struct sk_buff *skb,
5096 struct genl_info *info)
5098 struct devlink *devlink = info->user_ptr[0];
5099 struct devlink_health_reporter *reporter;
5100 struct sk_buff *msg;
5103 reporter = devlink_health_reporter_get_from_info(devlink, info);
5107 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5113 err = devlink_nl_health_reporter_fill(msg, devlink, reporter,
5114 DEVLINK_CMD_HEALTH_REPORTER_GET,
5115 info->snd_portid, info->snd_seq,
5122 err = genlmsg_reply(msg, info);
5124 devlink_health_reporter_put(reporter);
5129 devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg,
5130 struct netlink_callback *cb)
5132 struct devlink_health_reporter *reporter;
5133 struct devlink *devlink;
5134 int start = cb->args[0];
5138 mutex_lock(&devlink_mutex);
5139 list_for_each_entry(devlink, &devlink_list, list) {
5140 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
5142 mutex_lock(&devlink->reporters_lock);
5143 list_for_each_entry(reporter, &devlink->reporter_list,
5149 err = devlink_nl_health_reporter_fill(msg, devlink,
5151 DEVLINK_CMD_HEALTH_REPORTER_GET,
5152 NETLINK_CB(cb->skb).portid,
5156 mutex_unlock(&devlink->reporters_lock);
5161 mutex_unlock(&devlink->reporters_lock);
5164 mutex_unlock(&devlink_mutex);
5171 devlink_nl_cmd_health_reporter_set_doit(struct sk_buff *skb,
5172 struct genl_info *info)
5174 struct devlink *devlink = info->user_ptr[0];
5175 struct devlink_health_reporter *reporter;
5178 reporter = devlink_health_reporter_get_from_info(devlink, info);
5182 if (!reporter->ops->recover &&
5183 (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] ||
5184 info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])) {
5189 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD])
5190 reporter->graceful_period =
5191 nla_get_u64(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD]);
5193 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])
5194 reporter->auto_recover =
5195 nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER]);
5197 devlink_health_reporter_put(reporter);
5200 devlink_health_reporter_put(reporter);
5204 static int devlink_nl_cmd_health_reporter_recover_doit(struct sk_buff *skb,
5205 struct genl_info *info)
5207 struct devlink *devlink = info->user_ptr[0];
5208 struct devlink_health_reporter *reporter;
5211 reporter = devlink_health_reporter_get_from_info(devlink, info);
5215 err = devlink_health_reporter_recover(reporter, NULL);
5217 devlink_health_reporter_put(reporter);
5221 static int devlink_nl_cmd_health_reporter_diagnose_doit(struct sk_buff *skb,
5222 struct genl_info *info)
5224 struct devlink *devlink = info->user_ptr[0];
5225 struct devlink_health_reporter *reporter;
5226 struct devlink_fmsg *fmsg;
5229 reporter = devlink_health_reporter_get_from_info(devlink, info);
5233 if (!reporter->ops->diagnose) {
5234 devlink_health_reporter_put(reporter);
5238 fmsg = devlink_fmsg_alloc();
5240 devlink_health_reporter_put(reporter);
5244 err = devlink_fmsg_obj_nest_start(fmsg);
5248 err = reporter->ops->diagnose(reporter, fmsg);
5252 err = devlink_fmsg_obj_nest_end(fmsg);
5256 err = devlink_fmsg_snd(fmsg, info,
5257 DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE, 0);
5260 devlink_fmsg_free(fmsg);
5261 devlink_health_reporter_put(reporter);
5266 devlink_nl_cmd_health_reporter_dump_get_dumpit(struct sk_buff *skb,
5267 struct netlink_callback *cb)
5269 struct devlink_health_reporter *reporter;
5270 u64 start = cb->args[0];
5273 reporter = devlink_health_reporter_get_from_cb(cb);
5277 if (!reporter->ops->dump) {
5281 mutex_lock(&reporter->dump_lock);
5283 err = devlink_health_do_dump(reporter, NULL);
5286 cb->args[1] = reporter->dump_ts;
5288 if (!reporter->dump_fmsg || cb->args[1] != reporter->dump_ts) {
5289 NL_SET_ERR_MSG_MOD(cb->extack, "Dump trampled, please retry");
5294 err = devlink_fmsg_dumpit(reporter->dump_fmsg, skb, cb,
5295 DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET);
5297 mutex_unlock(&reporter->dump_lock);
5299 devlink_health_reporter_put(reporter);
5304 devlink_nl_cmd_health_reporter_dump_clear_doit(struct sk_buff *skb,
5305 struct genl_info *info)
5307 struct devlink *devlink = info->user_ptr[0];
5308 struct devlink_health_reporter *reporter;
5310 reporter = devlink_health_reporter_get_from_info(devlink, info);
5314 if (!reporter->ops->dump) {
5315 devlink_health_reporter_put(reporter);
5319 mutex_lock(&reporter->dump_lock);
5320 devlink_health_dump_clear(reporter);
5321 mutex_unlock(&reporter->dump_lock);
5322 devlink_health_reporter_put(reporter);
5326 struct devlink_stats {
5329 struct u64_stats_sync syncp;
5333 * struct devlink_trap_group_item - Packet trap group attributes.
5334 * @group: Immutable packet trap group attributes.
5335 * @refcount: Number of trap items using the group.
5336 * @list: trap_group_list member.
5337 * @stats: Trap group statistics.
5339 * Describes packet trap group attributes. Created by devlink during trap
5342 struct devlink_trap_group_item {
5343 const struct devlink_trap_group *group;
5344 refcount_t refcount;
5345 struct list_head list;
5346 struct devlink_stats __percpu *stats;
5350 * struct devlink_trap_item - Packet trap attributes.
5351 * @trap: Immutable packet trap attributes.
5352 * @group_item: Associated group item.
5353 * @list: trap_list member.
5354 * @action: Trap action.
5355 * @stats: Trap statistics.
5356 * @priv: Driver private information.
5358 * Describes both mutable and immutable packet trap attributes. Created by
5359 * devlink during trap registration and used for all trap related operations.
5361 struct devlink_trap_item {
5362 const struct devlink_trap *trap;
5363 struct devlink_trap_group_item *group_item;
5364 struct list_head list;
5365 enum devlink_trap_action action;
5366 struct devlink_stats __percpu *stats;
5370 static struct devlink_trap_item *
5371 devlink_trap_item_lookup(struct devlink *devlink, const char *name)
5373 struct devlink_trap_item *trap_item;
5375 list_for_each_entry(trap_item, &devlink->trap_list, list) {
5376 if (!strcmp(trap_item->trap->name, name))
5383 static struct devlink_trap_item *
5384 devlink_trap_item_get_from_info(struct devlink *devlink,
5385 struct genl_info *info)
5387 struct nlattr *attr;
5389 if (!info->attrs[DEVLINK_ATTR_TRAP_NAME])
5391 attr = info->attrs[DEVLINK_ATTR_TRAP_NAME];
5393 return devlink_trap_item_lookup(devlink, nla_data(attr));
5397 devlink_trap_action_get_from_info(struct genl_info *info,
5398 enum devlink_trap_action *p_trap_action)
5402 val = nla_get_u8(info->attrs[DEVLINK_ATTR_TRAP_ACTION]);
5404 case DEVLINK_TRAP_ACTION_DROP: /* fall-through */
5405 case DEVLINK_TRAP_ACTION_TRAP:
5406 *p_trap_action = val;
5415 static int devlink_trap_metadata_put(struct sk_buff *msg,
5416 const struct devlink_trap *trap)
5418 struct nlattr *attr;
5420 attr = nla_nest_start(msg, DEVLINK_ATTR_TRAP_METADATA);
5424 if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_IN_PORT) &&
5425 nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_IN_PORT))
5426 goto nla_put_failure;
5428 nla_nest_end(msg, attr);
5433 nla_nest_cancel(msg, attr);
5437 static void devlink_trap_stats_read(struct devlink_stats __percpu *trap_stats,
5438 struct devlink_stats *stats)
5442 memset(stats, 0, sizeof(*stats));
5443 for_each_possible_cpu(i) {
5444 struct devlink_stats *cpu_stats;
5445 u64 rx_packets, rx_bytes;
5448 cpu_stats = per_cpu_ptr(trap_stats, i);
5450 start = u64_stats_fetch_begin_irq(&cpu_stats->syncp);
5451 rx_packets = cpu_stats->rx_packets;
5452 rx_bytes = cpu_stats->rx_bytes;
5453 } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start));
5455 stats->rx_packets += rx_packets;
5456 stats->rx_bytes += rx_bytes;
5460 static int devlink_trap_stats_put(struct sk_buff *msg,
5461 struct devlink_stats __percpu *trap_stats)
5463 struct devlink_stats stats;
5464 struct nlattr *attr;
5466 devlink_trap_stats_read(trap_stats, &stats);
5468 attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
5472 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_PACKETS,
5473 stats.rx_packets, DEVLINK_ATTR_PAD))
5474 goto nla_put_failure;
5476 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_BYTES,
5477 stats.rx_bytes, DEVLINK_ATTR_PAD))
5478 goto nla_put_failure;
5480 nla_nest_end(msg, attr);
5485 nla_nest_cancel(msg, attr);
5489 static int devlink_nl_trap_fill(struct sk_buff *msg, struct devlink *devlink,
5490 const struct devlink_trap_item *trap_item,
5491 enum devlink_command cmd, u32 portid, u32 seq,
5494 struct devlink_trap_group_item *group_item = trap_item->group_item;
5498 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
5502 if (devlink_nl_put_handle(msg, devlink))
5503 goto nla_put_failure;
5505 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
5506 group_item->group->name))
5507 goto nla_put_failure;
5509 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_NAME, trap_item->trap->name))
5510 goto nla_put_failure;
5512 if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_TYPE, trap_item->trap->type))
5513 goto nla_put_failure;
5515 if (trap_item->trap->generic &&
5516 nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
5517 goto nla_put_failure;
5519 if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_ACTION, trap_item->action))
5520 goto nla_put_failure;
5522 err = devlink_trap_metadata_put(msg, trap_item->trap);
5524 goto nla_put_failure;
5526 err = devlink_trap_stats_put(msg, trap_item->stats);
5528 goto nla_put_failure;
5530 genlmsg_end(msg, hdr);
5535 genlmsg_cancel(msg, hdr);
5539 static int devlink_nl_cmd_trap_get_doit(struct sk_buff *skb,
5540 struct genl_info *info)
5542 struct netlink_ext_ack *extack = info->extack;
5543 struct devlink *devlink = info->user_ptr[0];
5544 struct devlink_trap_item *trap_item;
5545 struct sk_buff *msg;
5548 if (list_empty(&devlink->trap_list))
5551 trap_item = devlink_trap_item_get_from_info(devlink, info);
5553 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
5557 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5561 err = devlink_nl_trap_fill(msg, devlink, trap_item,
5562 DEVLINK_CMD_TRAP_NEW, info->snd_portid,
5567 return genlmsg_reply(msg, info);
5574 static int devlink_nl_cmd_trap_get_dumpit(struct sk_buff *msg,
5575 struct netlink_callback *cb)
5577 struct devlink_trap_item *trap_item;
5578 struct devlink *devlink;
5579 int start = cb->args[0];
5583 mutex_lock(&devlink_mutex);
5584 list_for_each_entry(devlink, &devlink_list, list) {
5585 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
5587 mutex_lock(&devlink->lock);
5588 list_for_each_entry(trap_item, &devlink->trap_list, list) {
5593 err = devlink_nl_trap_fill(msg, devlink, trap_item,
5594 DEVLINK_CMD_TRAP_NEW,
5595 NETLINK_CB(cb->skb).portid,
5599 mutex_unlock(&devlink->lock);
5604 mutex_unlock(&devlink->lock);
5607 mutex_unlock(&devlink_mutex);
5613 static int __devlink_trap_action_set(struct devlink *devlink,
5614 struct devlink_trap_item *trap_item,
5615 enum devlink_trap_action trap_action,
5616 struct netlink_ext_ack *extack)
5620 if (trap_item->action != trap_action &&
5621 trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP) {
5622 NL_SET_ERR_MSG_MOD(extack, "Cannot change action of non-drop traps. Skipping");
5626 err = devlink->ops->trap_action_set(devlink, trap_item->trap,
5631 trap_item->action = trap_action;
5636 static int devlink_trap_action_set(struct devlink *devlink,
5637 struct devlink_trap_item *trap_item,
5638 struct genl_info *info)
5640 enum devlink_trap_action trap_action;
5643 if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
5646 err = devlink_trap_action_get_from_info(info, &trap_action);
5648 NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
5652 return __devlink_trap_action_set(devlink, trap_item, trap_action,
5656 static int devlink_nl_cmd_trap_set_doit(struct sk_buff *skb,
5657 struct genl_info *info)
5659 struct netlink_ext_ack *extack = info->extack;
5660 struct devlink *devlink = info->user_ptr[0];
5661 struct devlink_trap_item *trap_item;
5664 if (list_empty(&devlink->trap_list))
5667 trap_item = devlink_trap_item_get_from_info(devlink, info);
5669 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
5673 err = devlink_trap_action_set(devlink, trap_item, info);
5680 static struct devlink_trap_group_item *
5681 devlink_trap_group_item_lookup(struct devlink *devlink, const char *name)
5683 struct devlink_trap_group_item *group_item;
5685 list_for_each_entry(group_item, &devlink->trap_group_list, list) {
5686 if (!strcmp(group_item->group->name, name))
5693 static struct devlink_trap_group_item *
5694 devlink_trap_group_item_get_from_info(struct devlink *devlink,
5695 struct genl_info *info)
5699 if (!info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME])
5701 name = nla_data(info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME]);
5703 return devlink_trap_group_item_lookup(devlink, name);
5707 devlink_nl_trap_group_fill(struct sk_buff *msg, struct devlink *devlink,
5708 const struct devlink_trap_group_item *group_item,
5709 enum devlink_command cmd, u32 portid, u32 seq,
5715 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
5719 if (devlink_nl_put_handle(msg, devlink))
5720 goto nla_put_failure;
5722 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
5723 group_item->group->name))
5724 goto nla_put_failure;
5726 if (group_item->group->generic &&
5727 nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
5728 goto nla_put_failure;
5730 err = devlink_trap_stats_put(msg, group_item->stats);
5732 goto nla_put_failure;
5734 genlmsg_end(msg, hdr);
5739 genlmsg_cancel(msg, hdr);
5743 static int devlink_nl_cmd_trap_group_get_doit(struct sk_buff *skb,
5744 struct genl_info *info)
5746 struct netlink_ext_ack *extack = info->extack;
5747 struct devlink *devlink = info->user_ptr[0];
5748 struct devlink_trap_group_item *group_item;
5749 struct sk_buff *msg;
5752 if (list_empty(&devlink->trap_group_list))
5755 group_item = devlink_trap_group_item_get_from_info(devlink, info);
5757 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
5761 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5765 err = devlink_nl_trap_group_fill(msg, devlink, group_item,
5766 DEVLINK_CMD_TRAP_GROUP_NEW,
5767 info->snd_portid, info->snd_seq, 0);
5769 goto err_trap_group_fill;
5771 return genlmsg_reply(msg, info);
5773 err_trap_group_fill:
5778 static int devlink_nl_cmd_trap_group_get_dumpit(struct sk_buff *msg,
5779 struct netlink_callback *cb)
5781 enum devlink_command cmd = DEVLINK_CMD_TRAP_GROUP_NEW;
5782 struct devlink_trap_group_item *group_item;
5783 u32 portid = NETLINK_CB(cb->skb).portid;
5784 struct devlink *devlink;
5785 int start = cb->args[0];
5789 mutex_lock(&devlink_mutex);
5790 list_for_each_entry(devlink, &devlink_list, list) {
5791 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
5793 mutex_lock(&devlink->lock);
5794 list_for_each_entry(group_item, &devlink->trap_group_list,
5800 err = devlink_nl_trap_group_fill(msg, devlink,
5806 mutex_unlock(&devlink->lock);
5811 mutex_unlock(&devlink->lock);
5814 mutex_unlock(&devlink_mutex);
5821 __devlink_trap_group_action_set(struct devlink *devlink,
5822 struct devlink_trap_group_item *group_item,
5823 enum devlink_trap_action trap_action,
5824 struct netlink_ext_ack *extack)
5826 const char *group_name = group_item->group->name;
5827 struct devlink_trap_item *trap_item;
5830 list_for_each_entry(trap_item, &devlink->trap_list, list) {
5831 if (strcmp(trap_item->trap->group.name, group_name))
5833 err = __devlink_trap_action_set(devlink, trap_item,
5834 trap_action, extack);
5843 devlink_trap_group_action_set(struct devlink *devlink,
5844 struct devlink_trap_group_item *group_item,
5845 struct genl_info *info)
5847 enum devlink_trap_action trap_action;
5850 if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
5853 err = devlink_trap_action_get_from_info(info, &trap_action);
5855 NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
5859 err = __devlink_trap_group_action_set(devlink, group_item, trap_action,
5867 static int devlink_nl_cmd_trap_group_set_doit(struct sk_buff *skb,
5868 struct genl_info *info)
5870 struct netlink_ext_ack *extack = info->extack;
5871 struct devlink *devlink = info->user_ptr[0];
5872 struct devlink_trap_group_item *group_item;
5875 if (list_empty(&devlink->trap_group_list))
5878 group_item = devlink_trap_group_item_get_from_info(devlink, info);
5880 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
5884 err = devlink_trap_group_action_set(devlink, group_item, info);
5891 static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = {
5892 [DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING },
5893 [DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING },
5894 [DEVLINK_ATTR_PORT_INDEX] = { .type = NLA_U32 },
5895 [DEVLINK_ATTR_PORT_TYPE] = { .type = NLA_U16 },
5896 [DEVLINK_ATTR_PORT_SPLIT_COUNT] = { .type = NLA_U32 },
5897 [DEVLINK_ATTR_SB_INDEX] = { .type = NLA_U32 },
5898 [DEVLINK_ATTR_SB_POOL_INDEX] = { .type = NLA_U16 },
5899 [DEVLINK_ATTR_SB_POOL_TYPE] = { .type = NLA_U8 },
5900 [DEVLINK_ATTR_SB_POOL_SIZE] = { .type = NLA_U32 },
5901 [DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE] = { .type = NLA_U8 },
5902 [DEVLINK_ATTR_SB_THRESHOLD] = { .type = NLA_U32 },
5903 [DEVLINK_ATTR_SB_TC_INDEX] = { .type = NLA_U16 },
5904 [DEVLINK_ATTR_ESWITCH_MODE] = { .type = NLA_U16 },
5905 [DEVLINK_ATTR_ESWITCH_INLINE_MODE] = { .type = NLA_U8 },
5906 [DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = { .type = NLA_U8 },
5907 [DEVLINK_ATTR_DPIPE_TABLE_NAME] = { .type = NLA_NUL_STRING },
5908 [DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED] = { .type = NLA_U8 },
5909 [DEVLINK_ATTR_RESOURCE_ID] = { .type = NLA_U64},
5910 [DEVLINK_ATTR_RESOURCE_SIZE] = { .type = NLA_U64},
5911 [DEVLINK_ATTR_PARAM_NAME] = { .type = NLA_NUL_STRING },
5912 [DEVLINK_ATTR_PARAM_TYPE] = { .type = NLA_U8 },
5913 [DEVLINK_ATTR_PARAM_VALUE_CMODE] = { .type = NLA_U8 },
5914 [DEVLINK_ATTR_REGION_NAME] = { .type = NLA_NUL_STRING },
5915 [DEVLINK_ATTR_REGION_SNAPSHOT_ID] = { .type = NLA_U32 },
5916 [DEVLINK_ATTR_HEALTH_REPORTER_NAME] = { .type = NLA_NUL_STRING },
5917 [DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] = { .type = NLA_U64 },
5918 [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER] = { .type = NLA_U8 },
5919 [DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME] = { .type = NLA_NUL_STRING },
5920 [DEVLINK_ATTR_FLASH_UPDATE_COMPONENT] = { .type = NLA_NUL_STRING },
5921 [DEVLINK_ATTR_TRAP_NAME] = { .type = NLA_NUL_STRING },
5922 [DEVLINK_ATTR_TRAP_ACTION] = { .type = NLA_U8 },
5923 [DEVLINK_ATTR_TRAP_GROUP_NAME] = { .type = NLA_NUL_STRING },
5924 [DEVLINK_ATTR_NETNS_PID] = { .type = NLA_U32 },
5925 [DEVLINK_ATTR_NETNS_FD] = { .type = NLA_U32 },
5926 [DEVLINK_ATTR_NETNS_ID] = { .type = NLA_U32 },
5929 static const struct genl_ops devlink_nl_ops[] = {
5931 .cmd = DEVLINK_CMD_GET,
5932 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
5933 .doit = devlink_nl_cmd_get_doit,
5934 .dumpit = devlink_nl_cmd_get_dumpit,
5935 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
5936 /* can be retrieved by unprivileged users */
5939 .cmd = DEVLINK_CMD_PORT_GET,
5940 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
5941 .doit = devlink_nl_cmd_port_get_doit,
5942 .dumpit = devlink_nl_cmd_port_get_dumpit,
5943 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
5944 /* can be retrieved by unprivileged users */
5947 .cmd = DEVLINK_CMD_PORT_SET,
5948 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
5949 .doit = devlink_nl_cmd_port_set_doit,
5950 .flags = GENL_ADMIN_PERM,
5951 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
5954 .cmd = DEVLINK_CMD_PORT_SPLIT,
5955 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
5956 .doit = devlink_nl_cmd_port_split_doit,
5957 .flags = GENL_ADMIN_PERM,
5958 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
5959 DEVLINK_NL_FLAG_NO_LOCK,
5962 .cmd = DEVLINK_CMD_PORT_UNSPLIT,
5963 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
5964 .doit = devlink_nl_cmd_port_unsplit_doit,
5965 .flags = GENL_ADMIN_PERM,
5966 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
5967 DEVLINK_NL_FLAG_NO_LOCK,
5970 .cmd = DEVLINK_CMD_SB_GET,
5971 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
5972 .doit = devlink_nl_cmd_sb_get_doit,
5973 .dumpit = devlink_nl_cmd_sb_get_dumpit,
5974 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
5975 DEVLINK_NL_FLAG_NEED_SB,
5976 /* can be retrieved by unprivileged users */
5979 .cmd = DEVLINK_CMD_SB_POOL_GET,
5980 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
5981 .doit = devlink_nl_cmd_sb_pool_get_doit,
5982 .dumpit = devlink_nl_cmd_sb_pool_get_dumpit,
5983 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
5984 DEVLINK_NL_FLAG_NEED_SB,
5985 /* can be retrieved by unprivileged users */
5988 .cmd = DEVLINK_CMD_SB_POOL_SET,
5989 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
5990 .doit = devlink_nl_cmd_sb_pool_set_doit,
5991 .flags = GENL_ADMIN_PERM,
5992 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
5993 DEVLINK_NL_FLAG_NEED_SB,
5996 .cmd = DEVLINK_CMD_SB_PORT_POOL_GET,
5997 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
5998 .doit = devlink_nl_cmd_sb_port_pool_get_doit,
5999 .dumpit = devlink_nl_cmd_sb_port_pool_get_dumpit,
6000 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
6001 DEVLINK_NL_FLAG_NEED_SB,
6002 /* can be retrieved by unprivileged users */
6005 .cmd = DEVLINK_CMD_SB_PORT_POOL_SET,
6006 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6007 .doit = devlink_nl_cmd_sb_port_pool_set_doit,
6008 .flags = GENL_ADMIN_PERM,
6009 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
6010 DEVLINK_NL_FLAG_NEED_SB,
6013 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_GET,
6014 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6015 .doit = devlink_nl_cmd_sb_tc_pool_bind_get_doit,
6016 .dumpit = devlink_nl_cmd_sb_tc_pool_bind_get_dumpit,
6017 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
6018 DEVLINK_NL_FLAG_NEED_SB,
6019 /* can be retrieved by unprivileged users */
6022 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_SET,
6023 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6024 .doit = devlink_nl_cmd_sb_tc_pool_bind_set_doit,
6025 .flags = GENL_ADMIN_PERM,
6026 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
6027 DEVLINK_NL_FLAG_NEED_SB,
6030 .cmd = DEVLINK_CMD_SB_OCC_SNAPSHOT,
6031 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6032 .doit = devlink_nl_cmd_sb_occ_snapshot_doit,
6033 .flags = GENL_ADMIN_PERM,
6034 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6035 DEVLINK_NL_FLAG_NEED_SB,
6038 .cmd = DEVLINK_CMD_SB_OCC_MAX_CLEAR,
6039 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6040 .doit = devlink_nl_cmd_sb_occ_max_clear_doit,
6041 .flags = GENL_ADMIN_PERM,
6042 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6043 DEVLINK_NL_FLAG_NEED_SB,
6046 .cmd = DEVLINK_CMD_ESWITCH_GET,
6047 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6048 .doit = devlink_nl_cmd_eswitch_get_doit,
6049 .flags = GENL_ADMIN_PERM,
6050 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6053 .cmd = DEVLINK_CMD_ESWITCH_SET,
6054 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6055 .doit = devlink_nl_cmd_eswitch_set_doit,
6056 .flags = GENL_ADMIN_PERM,
6057 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6058 DEVLINK_NL_FLAG_NO_LOCK,
6061 .cmd = DEVLINK_CMD_DPIPE_TABLE_GET,
6062 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6063 .doit = devlink_nl_cmd_dpipe_table_get,
6064 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6065 /* can be retrieved by unprivileged users */
6068 .cmd = DEVLINK_CMD_DPIPE_ENTRIES_GET,
6069 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6070 .doit = devlink_nl_cmd_dpipe_entries_get,
6071 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6072 /* can be retrieved by unprivileged users */
6075 .cmd = DEVLINK_CMD_DPIPE_HEADERS_GET,
6076 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6077 .doit = devlink_nl_cmd_dpipe_headers_get,
6078 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6079 /* can be retrieved by unprivileged users */
6082 .cmd = DEVLINK_CMD_DPIPE_TABLE_COUNTERS_SET,
6083 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6084 .doit = devlink_nl_cmd_dpipe_table_counters_set,
6085 .flags = GENL_ADMIN_PERM,
6086 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6089 .cmd = DEVLINK_CMD_RESOURCE_SET,
6090 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6091 .doit = devlink_nl_cmd_resource_set,
6092 .flags = GENL_ADMIN_PERM,
6093 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6096 .cmd = DEVLINK_CMD_RESOURCE_DUMP,
6097 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6098 .doit = devlink_nl_cmd_resource_dump,
6099 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6100 /* can be retrieved by unprivileged users */
6103 .cmd = DEVLINK_CMD_RELOAD,
6104 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6105 .doit = devlink_nl_cmd_reload,
6106 .flags = GENL_ADMIN_PERM,
6107 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6108 DEVLINK_NL_FLAG_NO_LOCK,
6111 .cmd = DEVLINK_CMD_PARAM_GET,
6112 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6113 .doit = devlink_nl_cmd_param_get_doit,
6114 .dumpit = devlink_nl_cmd_param_get_dumpit,
6115 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6116 /* can be retrieved by unprivileged users */
6119 .cmd = DEVLINK_CMD_PARAM_SET,
6120 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6121 .doit = devlink_nl_cmd_param_set_doit,
6122 .flags = GENL_ADMIN_PERM,
6123 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6126 .cmd = DEVLINK_CMD_PORT_PARAM_GET,
6127 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6128 .doit = devlink_nl_cmd_port_param_get_doit,
6129 .dumpit = devlink_nl_cmd_port_param_get_dumpit,
6130 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
6131 /* can be retrieved by unprivileged users */
6134 .cmd = DEVLINK_CMD_PORT_PARAM_SET,
6135 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6136 .doit = devlink_nl_cmd_port_param_set_doit,
6137 .flags = GENL_ADMIN_PERM,
6138 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
6141 .cmd = DEVLINK_CMD_REGION_GET,
6142 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6143 .doit = devlink_nl_cmd_region_get_doit,
6144 .dumpit = devlink_nl_cmd_region_get_dumpit,
6145 .flags = GENL_ADMIN_PERM,
6146 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6149 .cmd = DEVLINK_CMD_REGION_DEL,
6150 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6151 .doit = devlink_nl_cmd_region_del,
6152 .flags = GENL_ADMIN_PERM,
6153 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6156 .cmd = DEVLINK_CMD_REGION_READ,
6157 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6158 .dumpit = devlink_nl_cmd_region_read_dumpit,
6159 .flags = GENL_ADMIN_PERM,
6160 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6163 .cmd = DEVLINK_CMD_INFO_GET,
6164 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6165 .doit = devlink_nl_cmd_info_get_doit,
6166 .dumpit = devlink_nl_cmd_info_get_dumpit,
6167 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6168 /* can be retrieved by unprivileged users */
6171 .cmd = DEVLINK_CMD_HEALTH_REPORTER_GET,
6172 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6173 .doit = devlink_nl_cmd_health_reporter_get_doit,
6174 .dumpit = devlink_nl_cmd_health_reporter_get_dumpit,
6175 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6176 DEVLINK_NL_FLAG_NO_LOCK,
6177 /* can be retrieved by unprivileged users */
6180 .cmd = DEVLINK_CMD_HEALTH_REPORTER_SET,
6181 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6182 .doit = devlink_nl_cmd_health_reporter_set_doit,
6183 .flags = GENL_ADMIN_PERM,
6184 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6185 DEVLINK_NL_FLAG_NO_LOCK,
6188 .cmd = DEVLINK_CMD_HEALTH_REPORTER_RECOVER,
6189 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6190 .doit = devlink_nl_cmd_health_reporter_recover_doit,
6191 .flags = GENL_ADMIN_PERM,
6192 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6193 DEVLINK_NL_FLAG_NO_LOCK,
6196 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE,
6197 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6198 .doit = devlink_nl_cmd_health_reporter_diagnose_doit,
6199 .flags = GENL_ADMIN_PERM,
6200 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6201 DEVLINK_NL_FLAG_NO_LOCK,
6204 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET,
6205 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6206 .dumpit = devlink_nl_cmd_health_reporter_dump_get_dumpit,
6207 .flags = GENL_ADMIN_PERM,
6208 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6209 DEVLINK_NL_FLAG_NO_LOCK,
6212 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_CLEAR,
6213 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6214 .doit = devlink_nl_cmd_health_reporter_dump_clear_doit,
6215 .flags = GENL_ADMIN_PERM,
6216 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6217 DEVLINK_NL_FLAG_NO_LOCK,
6220 .cmd = DEVLINK_CMD_FLASH_UPDATE,
6221 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6222 .doit = devlink_nl_cmd_flash_update,
6223 .flags = GENL_ADMIN_PERM,
6224 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6227 .cmd = DEVLINK_CMD_TRAP_GET,
6228 .doit = devlink_nl_cmd_trap_get_doit,
6229 .dumpit = devlink_nl_cmd_trap_get_dumpit,
6230 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6231 /* can be retrieved by unprivileged users */
6234 .cmd = DEVLINK_CMD_TRAP_SET,
6235 .doit = devlink_nl_cmd_trap_set_doit,
6236 .flags = GENL_ADMIN_PERM,
6237 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6240 .cmd = DEVLINK_CMD_TRAP_GROUP_GET,
6241 .doit = devlink_nl_cmd_trap_group_get_doit,
6242 .dumpit = devlink_nl_cmd_trap_group_get_dumpit,
6243 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6244 /* can be retrieved by unprivileged users */
6247 .cmd = DEVLINK_CMD_TRAP_GROUP_SET,
6248 .doit = devlink_nl_cmd_trap_group_set_doit,
6249 .flags = GENL_ADMIN_PERM,
6250 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6254 static struct genl_family devlink_nl_family __ro_after_init = {
6255 .name = DEVLINK_GENL_NAME,
6256 .version = DEVLINK_GENL_VERSION,
6257 .maxattr = DEVLINK_ATTR_MAX,
6258 .policy = devlink_nl_policy,
6260 .pre_doit = devlink_nl_pre_doit,
6261 .post_doit = devlink_nl_post_doit,
6262 .module = THIS_MODULE,
6263 .ops = devlink_nl_ops,
6264 .n_ops = ARRAY_SIZE(devlink_nl_ops),
6265 .mcgrps = devlink_nl_mcgrps,
6266 .n_mcgrps = ARRAY_SIZE(devlink_nl_mcgrps),
6270 * devlink_alloc - Allocate new devlink instance resources
6273 * @priv_size: size of user private data
6275 * Allocate new devlink instance resources, including devlink index
6278 struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size)
6280 struct devlink *devlink;
6285 devlink = kzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL);
6289 __devlink_net_set(devlink, &init_net);
6290 INIT_LIST_HEAD(&devlink->port_list);
6291 INIT_LIST_HEAD(&devlink->sb_list);
6292 INIT_LIST_HEAD_RCU(&devlink->dpipe_table_list);
6293 INIT_LIST_HEAD(&devlink->resource_list);
6294 INIT_LIST_HEAD(&devlink->param_list);
6295 INIT_LIST_HEAD(&devlink->region_list);
6296 INIT_LIST_HEAD(&devlink->reporter_list);
6297 INIT_LIST_HEAD(&devlink->trap_list);
6298 INIT_LIST_HEAD(&devlink->trap_group_list);
6299 mutex_init(&devlink->lock);
6300 mutex_init(&devlink->reporters_lock);
6303 EXPORT_SYMBOL_GPL(devlink_alloc);
6306 * devlink_register - Register devlink instance
6309 * @dev: parent device
6311 int devlink_register(struct devlink *devlink, struct device *dev)
6313 mutex_lock(&devlink_mutex);
6315 devlink->registered = true;
6316 list_add_tail(&devlink->list, &devlink_list);
6317 devlink_notify(devlink, DEVLINK_CMD_NEW);
6318 mutex_unlock(&devlink_mutex);
6321 EXPORT_SYMBOL_GPL(devlink_register);
6324 * devlink_unregister - Unregister devlink instance
6328 void devlink_unregister(struct devlink *devlink)
6330 mutex_lock(&devlink_mutex);
6331 devlink_notify(devlink, DEVLINK_CMD_DEL);
6332 list_del(&devlink->list);
6333 mutex_unlock(&devlink_mutex);
6335 EXPORT_SYMBOL_GPL(devlink_unregister);
6338 * devlink_free - Free devlink instance resources
6342 void devlink_free(struct devlink *devlink)
6344 mutex_destroy(&devlink->reporters_lock);
6345 mutex_destroy(&devlink->lock);
6346 WARN_ON(!list_empty(&devlink->trap_group_list));
6347 WARN_ON(!list_empty(&devlink->trap_list));
6348 WARN_ON(!list_empty(&devlink->reporter_list));
6349 WARN_ON(!list_empty(&devlink->region_list));
6350 WARN_ON(!list_empty(&devlink->param_list));
6351 WARN_ON(!list_empty(&devlink->resource_list));
6352 WARN_ON(!list_empty(&devlink->dpipe_table_list));
6353 WARN_ON(!list_empty(&devlink->sb_list));
6354 WARN_ON(!list_empty(&devlink->port_list));
6358 EXPORT_SYMBOL_GPL(devlink_free);
6360 static void devlink_port_type_warn(struct work_struct *work)
6362 WARN(true, "Type was not set for devlink port.");
6365 static bool devlink_port_type_should_warn(struct devlink_port *devlink_port)
6367 /* Ignore CPU and DSA flavours. */
6368 return devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_CPU &&
6369 devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_DSA;
6372 #define DEVLINK_PORT_TYPE_WARN_TIMEOUT (HZ * 30)
6374 static void devlink_port_type_warn_schedule(struct devlink_port *devlink_port)
6376 if (!devlink_port_type_should_warn(devlink_port))
6378 /* Schedule a work to WARN in case driver does not set port
6379 * type within timeout.
6381 schedule_delayed_work(&devlink_port->type_warn_dw,
6382 DEVLINK_PORT_TYPE_WARN_TIMEOUT);
6385 static void devlink_port_type_warn_cancel(struct devlink_port *devlink_port)
6387 if (!devlink_port_type_should_warn(devlink_port))
6389 cancel_delayed_work_sync(&devlink_port->type_warn_dw);
6393 * devlink_port_register - Register devlink port
6396 * @devlink_port: devlink port
6397 * @port_index: driver-specific numerical identifier of the port
6399 * Register devlink port with provided port index. User can use
6400 * any indexing, even hw-related one. devlink_port structure
6401 * is convenient to be embedded inside user driver private structure.
6402 * Note that the caller should take care of zeroing the devlink_port
6405 int devlink_port_register(struct devlink *devlink,
6406 struct devlink_port *devlink_port,
6407 unsigned int port_index)
6409 mutex_lock(&devlink->lock);
6410 if (devlink_port_index_exists(devlink, port_index)) {
6411 mutex_unlock(&devlink->lock);
6414 devlink_port->devlink = devlink;
6415 devlink_port->index = port_index;
6416 devlink_port->registered = true;
6417 spin_lock_init(&devlink_port->type_lock);
6418 list_add_tail(&devlink_port->list, &devlink->port_list);
6419 INIT_LIST_HEAD(&devlink_port->param_list);
6420 mutex_unlock(&devlink->lock);
6421 INIT_DELAYED_WORK(&devlink_port->type_warn_dw, &devlink_port_type_warn);
6422 devlink_port_type_warn_schedule(devlink_port);
6423 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
6426 EXPORT_SYMBOL_GPL(devlink_port_register);
6429 * devlink_port_unregister - Unregister devlink port
6431 * @devlink_port: devlink port
6433 void devlink_port_unregister(struct devlink_port *devlink_port)
6435 struct devlink *devlink = devlink_port->devlink;
6437 devlink_port_type_warn_cancel(devlink_port);
6438 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
6439 mutex_lock(&devlink->lock);
6440 list_del(&devlink_port->list);
6441 mutex_unlock(&devlink->lock);
6443 EXPORT_SYMBOL_GPL(devlink_port_unregister);
6445 static void __devlink_port_type_set(struct devlink_port *devlink_port,
6446 enum devlink_port_type type,
6449 if (WARN_ON(!devlink_port->registered))
6451 devlink_port_type_warn_cancel(devlink_port);
6452 spin_lock_bh(&devlink_port->type_lock);
6453 devlink_port->type = type;
6454 devlink_port->type_dev = type_dev;
6455 spin_unlock_bh(&devlink_port->type_lock);
6456 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
6460 * devlink_port_type_eth_set - Set port type to Ethernet
6462 * @devlink_port: devlink port
6463 * @netdev: related netdevice
6465 void devlink_port_type_eth_set(struct devlink_port *devlink_port,
6466 struct net_device *netdev)
6468 const struct net_device_ops *ops = netdev->netdev_ops;
6470 /* If driver registers devlink port, it should set devlink port
6471 * attributes accordingly so the compat functions are called
6472 * and the original ops are not used.
6474 if (ops->ndo_get_phys_port_name) {
6475 /* Some drivers use the same set of ndos for netdevs
6476 * that have devlink_port registered and also for
6477 * those who don't. Make sure that ndo_get_phys_port_name
6478 * returns -EOPNOTSUPP here in case it is defined.
6481 char name[IFNAMSIZ];
6484 err = ops->ndo_get_phys_port_name(netdev, name, sizeof(name));
6485 WARN_ON(err != -EOPNOTSUPP);
6487 if (ops->ndo_get_port_parent_id) {
6488 /* Some drivers use the same set of ndos for netdevs
6489 * that have devlink_port registered and also for
6490 * those who don't. Make sure that ndo_get_port_parent_id
6491 * returns -EOPNOTSUPP here in case it is defined.
6494 struct netdev_phys_item_id ppid;
6497 err = ops->ndo_get_port_parent_id(netdev, &ppid);
6498 WARN_ON(err != -EOPNOTSUPP);
6500 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH, netdev);
6502 EXPORT_SYMBOL_GPL(devlink_port_type_eth_set);
6505 * devlink_port_type_ib_set - Set port type to InfiniBand
6507 * @devlink_port: devlink port
6508 * @ibdev: related IB device
6510 void devlink_port_type_ib_set(struct devlink_port *devlink_port,
6511 struct ib_device *ibdev)
6513 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_IB, ibdev);
6515 EXPORT_SYMBOL_GPL(devlink_port_type_ib_set);
6518 * devlink_port_type_clear - Clear port type
6520 * @devlink_port: devlink port
6522 void devlink_port_type_clear(struct devlink_port *devlink_port)
6524 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET, NULL);
6525 devlink_port_type_warn_schedule(devlink_port);
6527 EXPORT_SYMBOL_GPL(devlink_port_type_clear);
6529 static int __devlink_port_attrs_set(struct devlink_port *devlink_port,
6530 enum devlink_port_flavour flavour,
6531 const unsigned char *switch_id,
6532 unsigned char switch_id_len)
6534 struct devlink_port_attrs *attrs = &devlink_port->attrs;
6536 if (WARN_ON(devlink_port->registered))
6539 attrs->flavour = flavour;
6541 attrs->switch_port = true;
6542 if (WARN_ON(switch_id_len > MAX_PHYS_ITEM_ID_LEN))
6543 switch_id_len = MAX_PHYS_ITEM_ID_LEN;
6544 memcpy(attrs->switch_id.id, switch_id, switch_id_len);
6545 attrs->switch_id.id_len = switch_id_len;
6547 attrs->switch_port = false;
6553 * devlink_port_attrs_set - Set port attributes
6555 * @devlink_port: devlink port
6556 * @flavour: flavour of the port
6557 * @port_number: number of the port that is facing user, for example
6558 * the front panel port number
6559 * @split: indicates if this is split port
6560 * @split_subport_number: if the port is split, this is the number
6562 * @switch_id: if the port is part of switch, this is buffer with ID,
6563 * otwerwise this is NULL
6564 * @switch_id_len: length of the switch_id buffer
6566 void devlink_port_attrs_set(struct devlink_port *devlink_port,
6567 enum devlink_port_flavour flavour,
6568 u32 port_number, bool split,
6569 u32 split_subport_number,
6570 const unsigned char *switch_id,
6571 unsigned char switch_id_len)
6573 struct devlink_port_attrs *attrs = &devlink_port->attrs;
6576 ret = __devlink_port_attrs_set(devlink_port, flavour,
6577 switch_id, switch_id_len);
6580 attrs->split = split;
6581 attrs->phys.port_number = port_number;
6582 attrs->phys.split_subport_number = split_subport_number;
6584 EXPORT_SYMBOL_GPL(devlink_port_attrs_set);
6587 * devlink_port_attrs_pci_pf_set - Set PCI PF port attributes
6589 * @devlink_port: devlink port
6590 * @pf: associated PF for the devlink port instance
6591 * @switch_id: if the port is part of switch, this is buffer with ID,
6592 * otherwise this is NULL
6593 * @switch_id_len: length of the switch_id buffer
6595 void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port,
6596 const unsigned char *switch_id,
6597 unsigned char switch_id_len, u16 pf)
6599 struct devlink_port_attrs *attrs = &devlink_port->attrs;
6602 ret = __devlink_port_attrs_set(devlink_port,
6603 DEVLINK_PORT_FLAVOUR_PCI_PF,
6604 switch_id, switch_id_len);
6608 attrs->pci_pf.pf = pf;
6610 EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_pf_set);
6613 * devlink_port_attrs_pci_vf_set - Set PCI VF port attributes
6615 * @devlink_port: devlink port
6616 * @pf: associated PF for the devlink port instance
6617 * @vf: associated VF of a PF for the devlink port instance
6618 * @switch_id: if the port is part of switch, this is buffer with ID,
6619 * otherwise this is NULL
6620 * @switch_id_len: length of the switch_id buffer
6622 void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port,
6623 const unsigned char *switch_id,
6624 unsigned char switch_id_len,
6627 struct devlink_port_attrs *attrs = &devlink_port->attrs;
6630 ret = __devlink_port_attrs_set(devlink_port,
6631 DEVLINK_PORT_FLAVOUR_PCI_VF,
6632 switch_id, switch_id_len);
6635 attrs->pci_vf.pf = pf;
6636 attrs->pci_vf.vf = vf;
6638 EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_vf_set);
6640 static int __devlink_port_phys_port_name_get(struct devlink_port *devlink_port,
6641 char *name, size_t len)
6643 struct devlink_port_attrs *attrs = &devlink_port->attrs;
6649 switch (attrs->flavour) {
6650 case DEVLINK_PORT_FLAVOUR_PHYSICAL:
6652 n = snprintf(name, len, "p%u", attrs->phys.port_number);
6654 n = snprintf(name, len, "p%us%u",
6655 attrs->phys.port_number,
6656 attrs->phys.split_subport_number);
6658 case DEVLINK_PORT_FLAVOUR_CPU:
6659 case DEVLINK_PORT_FLAVOUR_DSA:
6660 /* As CPU and DSA ports do not have a netdevice associated
6661 * case should not ever happen.
6665 case DEVLINK_PORT_FLAVOUR_PCI_PF:
6666 n = snprintf(name, len, "pf%u", attrs->pci_pf.pf);
6668 case DEVLINK_PORT_FLAVOUR_PCI_VF:
6669 n = snprintf(name, len, "pf%uvf%u",
6670 attrs->pci_vf.pf, attrs->pci_vf.vf);
6680 int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
6681 u32 size, u16 ingress_pools_count,
6682 u16 egress_pools_count, u16 ingress_tc_count,
6683 u16 egress_tc_count)
6685 struct devlink_sb *devlink_sb;
6688 mutex_lock(&devlink->lock);
6689 if (devlink_sb_index_exists(devlink, sb_index)) {
6694 devlink_sb = kzalloc(sizeof(*devlink_sb), GFP_KERNEL);
6699 devlink_sb->index = sb_index;
6700 devlink_sb->size = size;
6701 devlink_sb->ingress_pools_count = ingress_pools_count;
6702 devlink_sb->egress_pools_count = egress_pools_count;
6703 devlink_sb->ingress_tc_count = ingress_tc_count;
6704 devlink_sb->egress_tc_count = egress_tc_count;
6705 list_add_tail(&devlink_sb->list, &devlink->sb_list);
6707 mutex_unlock(&devlink->lock);
6710 EXPORT_SYMBOL_GPL(devlink_sb_register);
6712 void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index)
6714 struct devlink_sb *devlink_sb;
6716 mutex_lock(&devlink->lock);
6717 devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
6718 WARN_ON(!devlink_sb);
6719 list_del(&devlink_sb->list);
6720 mutex_unlock(&devlink->lock);
6723 EXPORT_SYMBOL_GPL(devlink_sb_unregister);
6726 * devlink_dpipe_headers_register - register dpipe headers
6729 * @dpipe_headers: dpipe header array
6731 * Register the headers supported by hardware.
6733 int devlink_dpipe_headers_register(struct devlink *devlink,
6734 struct devlink_dpipe_headers *dpipe_headers)
6736 mutex_lock(&devlink->lock);
6737 devlink->dpipe_headers = dpipe_headers;
6738 mutex_unlock(&devlink->lock);
6741 EXPORT_SYMBOL_GPL(devlink_dpipe_headers_register);
6744 * devlink_dpipe_headers_unregister - unregister dpipe headers
6748 * Unregister the headers supported by hardware.
6750 void devlink_dpipe_headers_unregister(struct devlink *devlink)
6752 mutex_lock(&devlink->lock);
6753 devlink->dpipe_headers = NULL;
6754 mutex_unlock(&devlink->lock);
6756 EXPORT_SYMBOL_GPL(devlink_dpipe_headers_unregister);
6759 * devlink_dpipe_table_counter_enabled - check if counter allocation
6762 * @table_name: tables name
6764 * Used by driver to check if counter allocation is required.
6765 * After counter allocation is turned on the table entries
6766 * are updated to include counter statistics.
6768 * After that point on the driver must respect the counter
6769 * state so that each entry added to the table is added
6772 bool devlink_dpipe_table_counter_enabled(struct devlink *devlink,
6773 const char *table_name)
6775 struct devlink_dpipe_table *table;
6779 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
6783 enabled = table->counters_enabled;
6787 EXPORT_SYMBOL_GPL(devlink_dpipe_table_counter_enabled);
6790 * devlink_dpipe_table_register - register dpipe table
6793 * @table_name: table name
6794 * @table_ops: table ops
6796 * @counter_control_extern: external control for counters
6798 int devlink_dpipe_table_register(struct devlink *devlink,
6799 const char *table_name,
6800 struct devlink_dpipe_table_ops *table_ops,
6801 void *priv, bool counter_control_extern)
6803 struct devlink_dpipe_table *table;
6805 if (devlink_dpipe_table_find(&devlink->dpipe_table_list, table_name))
6808 if (WARN_ON(!table_ops->size_get))
6811 table = kzalloc(sizeof(*table), GFP_KERNEL);
6815 table->name = table_name;
6816 table->table_ops = table_ops;
6818 table->counter_control_extern = counter_control_extern;
6820 mutex_lock(&devlink->lock);
6821 list_add_tail_rcu(&table->list, &devlink->dpipe_table_list);
6822 mutex_unlock(&devlink->lock);
6825 EXPORT_SYMBOL_GPL(devlink_dpipe_table_register);
6828 * devlink_dpipe_table_unregister - unregister dpipe table
6831 * @table_name: table name
6833 void devlink_dpipe_table_unregister(struct devlink *devlink,
6834 const char *table_name)
6836 struct devlink_dpipe_table *table;
6838 mutex_lock(&devlink->lock);
6839 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
6843 list_del_rcu(&table->list);
6844 mutex_unlock(&devlink->lock);
6845 kfree_rcu(table, rcu);
6848 mutex_unlock(&devlink->lock);
6850 EXPORT_SYMBOL_GPL(devlink_dpipe_table_unregister);
6853 * devlink_resource_register - devlink resource register
6856 * @resource_name: resource's name
6857 * @resource_size: resource's size
6858 * @resource_id: resource's id
6859 * @parent_resource_id: resource's parent id
6860 * @size_params: size parameters
6862 int devlink_resource_register(struct devlink *devlink,
6863 const char *resource_name,
6866 u64 parent_resource_id,
6867 const struct devlink_resource_size_params *size_params)
6869 struct devlink_resource *resource;
6870 struct list_head *resource_list;
6874 top_hierarchy = parent_resource_id == DEVLINK_RESOURCE_ID_PARENT_TOP;
6876 mutex_lock(&devlink->lock);
6877 resource = devlink_resource_find(devlink, NULL, resource_id);
6883 resource = kzalloc(sizeof(*resource), GFP_KERNEL);
6889 if (top_hierarchy) {
6890 resource_list = &devlink->resource_list;
6892 struct devlink_resource *parent_resource;
6894 parent_resource = devlink_resource_find(devlink, NULL,
6895 parent_resource_id);
6896 if (parent_resource) {
6897 resource_list = &parent_resource->resource_list;
6898 resource->parent = parent_resource;
6906 resource->name = resource_name;
6907 resource->size = resource_size;
6908 resource->size_new = resource_size;
6909 resource->id = resource_id;
6910 resource->size_valid = true;
6911 memcpy(&resource->size_params, size_params,
6912 sizeof(resource->size_params));
6913 INIT_LIST_HEAD(&resource->resource_list);
6914 list_add_tail(&resource->list, resource_list);
6916 mutex_unlock(&devlink->lock);
6919 EXPORT_SYMBOL_GPL(devlink_resource_register);
6922 * devlink_resources_unregister - free all resources
6925 * @resource: resource
6927 void devlink_resources_unregister(struct devlink *devlink,
6928 struct devlink_resource *resource)
6930 struct devlink_resource *tmp, *child_resource;
6931 struct list_head *resource_list;
6934 resource_list = &resource->resource_list;
6936 resource_list = &devlink->resource_list;
6939 mutex_lock(&devlink->lock);
6941 list_for_each_entry_safe(child_resource, tmp, resource_list, list) {
6942 devlink_resources_unregister(devlink, child_resource);
6943 list_del(&child_resource->list);
6944 kfree(child_resource);
6948 mutex_unlock(&devlink->lock);
6950 EXPORT_SYMBOL_GPL(devlink_resources_unregister);
6953 * devlink_resource_size_get - get and update size
6956 * @resource_id: the requested resource id
6957 * @p_resource_size: ptr to update
6959 int devlink_resource_size_get(struct devlink *devlink,
6961 u64 *p_resource_size)
6963 struct devlink_resource *resource;
6966 mutex_lock(&devlink->lock);
6967 resource = devlink_resource_find(devlink, NULL, resource_id);
6972 *p_resource_size = resource->size_new;
6973 resource->size = resource->size_new;
6975 mutex_unlock(&devlink->lock);
6978 EXPORT_SYMBOL_GPL(devlink_resource_size_get);
6981 * devlink_dpipe_table_resource_set - set the resource id
6984 * @table_name: table name
6985 * @resource_id: resource id
6986 * @resource_units: number of resource's units consumed per table's entry
6988 int devlink_dpipe_table_resource_set(struct devlink *devlink,
6989 const char *table_name, u64 resource_id,
6992 struct devlink_dpipe_table *table;
6995 mutex_lock(&devlink->lock);
6996 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
7002 table->resource_id = resource_id;
7003 table->resource_units = resource_units;
7004 table->resource_valid = true;
7006 mutex_unlock(&devlink->lock);
7009 EXPORT_SYMBOL_GPL(devlink_dpipe_table_resource_set);
7012 * devlink_resource_occ_get_register - register occupancy getter
7015 * @resource_id: resource id
7016 * @occ_get: occupancy getter callback
7017 * @occ_get_priv: occupancy getter callback priv
7019 void devlink_resource_occ_get_register(struct devlink *devlink,
7021 devlink_resource_occ_get_t *occ_get,
7024 struct devlink_resource *resource;
7026 mutex_lock(&devlink->lock);
7027 resource = devlink_resource_find(devlink, NULL, resource_id);
7028 if (WARN_ON(!resource))
7030 WARN_ON(resource->occ_get);
7032 resource->occ_get = occ_get;
7033 resource->occ_get_priv = occ_get_priv;
7035 mutex_unlock(&devlink->lock);
7037 EXPORT_SYMBOL_GPL(devlink_resource_occ_get_register);
7040 * devlink_resource_occ_get_unregister - unregister occupancy getter
7043 * @resource_id: resource id
7045 void devlink_resource_occ_get_unregister(struct devlink *devlink,
7048 struct devlink_resource *resource;
7050 mutex_lock(&devlink->lock);
7051 resource = devlink_resource_find(devlink, NULL, resource_id);
7052 if (WARN_ON(!resource))
7054 WARN_ON(!resource->occ_get);
7056 resource->occ_get = NULL;
7057 resource->occ_get_priv = NULL;
7059 mutex_unlock(&devlink->lock);
7061 EXPORT_SYMBOL_GPL(devlink_resource_occ_get_unregister);
7063 static int devlink_param_verify(const struct devlink_param *param)
7065 if (!param || !param->name || !param->supported_cmodes)
7068 return devlink_param_generic_verify(param);
7070 return devlink_param_driver_verify(param);
7073 static int __devlink_params_register(struct devlink *devlink,
7074 unsigned int port_index,
7075 struct list_head *param_list,
7076 const struct devlink_param *params,
7077 size_t params_count,
7078 enum devlink_command reg_cmd,
7079 enum devlink_command unreg_cmd)
7081 const struct devlink_param *param = params;
7085 mutex_lock(&devlink->lock);
7086 for (i = 0; i < params_count; i++, param++) {
7087 err = devlink_param_verify(param);
7091 err = devlink_param_register_one(devlink, port_index,
7092 param_list, param, reg_cmd);
7097 mutex_unlock(&devlink->lock);
7103 for (param--; i > 0; i--, param--)
7104 devlink_param_unregister_one(devlink, port_index, param_list,
7107 mutex_unlock(&devlink->lock);
7111 static void __devlink_params_unregister(struct devlink *devlink,
7112 unsigned int port_index,
7113 struct list_head *param_list,
7114 const struct devlink_param *params,
7115 size_t params_count,
7116 enum devlink_command cmd)
7118 const struct devlink_param *param = params;
7121 mutex_lock(&devlink->lock);
7122 for (i = 0; i < params_count; i++, param++)
7123 devlink_param_unregister_one(devlink, 0, param_list, param,
7125 mutex_unlock(&devlink->lock);
7129 * devlink_params_register - register configuration parameters
7132 * @params: configuration parameters array
7133 * @params_count: number of parameters provided
7135 * Register the configuration parameters supported by the driver.
7137 int devlink_params_register(struct devlink *devlink,
7138 const struct devlink_param *params,
7139 size_t params_count)
7141 return __devlink_params_register(devlink, 0, &devlink->param_list,
7142 params, params_count,
7143 DEVLINK_CMD_PARAM_NEW,
7144 DEVLINK_CMD_PARAM_DEL);
7146 EXPORT_SYMBOL_GPL(devlink_params_register);
7149 * devlink_params_unregister - unregister configuration parameters
7151 * @params: configuration parameters to unregister
7152 * @params_count: number of parameters provided
7154 void devlink_params_unregister(struct devlink *devlink,
7155 const struct devlink_param *params,
7156 size_t params_count)
7158 return __devlink_params_unregister(devlink, 0, &devlink->param_list,
7159 params, params_count,
7160 DEVLINK_CMD_PARAM_DEL);
7162 EXPORT_SYMBOL_GPL(devlink_params_unregister);
7165 * devlink_params_publish - publish configuration parameters
7169 * Publish previously registered configuration parameters.
7171 void devlink_params_publish(struct devlink *devlink)
7173 struct devlink_param_item *param_item;
7175 list_for_each_entry(param_item, &devlink->param_list, list) {
7176 if (param_item->published)
7178 param_item->published = true;
7179 devlink_param_notify(devlink, 0, param_item,
7180 DEVLINK_CMD_PARAM_NEW);
7183 EXPORT_SYMBOL_GPL(devlink_params_publish);
7186 * devlink_params_unpublish - unpublish configuration parameters
7190 * Unpublish previously registered configuration parameters.
7192 void devlink_params_unpublish(struct devlink *devlink)
7194 struct devlink_param_item *param_item;
7196 list_for_each_entry(param_item, &devlink->param_list, list) {
7197 if (!param_item->published)
7199 param_item->published = false;
7200 devlink_param_notify(devlink, 0, param_item,
7201 DEVLINK_CMD_PARAM_DEL);
7204 EXPORT_SYMBOL_GPL(devlink_params_unpublish);
7207 * devlink_port_params_register - register port configuration parameters
7209 * @devlink_port: devlink port
7210 * @params: configuration parameters array
7211 * @params_count: number of parameters provided
7213 * Register the configuration parameters supported by the port.
7215 int devlink_port_params_register(struct devlink_port *devlink_port,
7216 const struct devlink_param *params,
7217 size_t params_count)
7219 return __devlink_params_register(devlink_port->devlink,
7220 devlink_port->index,
7221 &devlink_port->param_list, params,
7223 DEVLINK_CMD_PORT_PARAM_NEW,
7224 DEVLINK_CMD_PORT_PARAM_DEL);
7226 EXPORT_SYMBOL_GPL(devlink_port_params_register);
7229 * devlink_port_params_unregister - unregister port configuration
7232 * @devlink_port: devlink port
7233 * @params: configuration parameters array
7234 * @params_count: number of parameters provided
7236 void devlink_port_params_unregister(struct devlink_port *devlink_port,
7237 const struct devlink_param *params,
7238 size_t params_count)
7240 return __devlink_params_unregister(devlink_port->devlink,
7241 devlink_port->index,
7242 &devlink_port->param_list,
7243 params, params_count,
7244 DEVLINK_CMD_PORT_PARAM_DEL);
7246 EXPORT_SYMBOL_GPL(devlink_port_params_unregister);
7249 __devlink_param_driverinit_value_get(struct list_head *param_list, u32 param_id,
7250 union devlink_param_value *init_val)
7252 struct devlink_param_item *param_item;
7254 param_item = devlink_param_find_by_id(param_list, param_id);
7258 if (!param_item->driverinit_value_valid ||
7259 !devlink_param_cmode_is_supported(param_item->param,
7260 DEVLINK_PARAM_CMODE_DRIVERINIT))
7263 if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
7264 strcpy(init_val->vstr, param_item->driverinit_value.vstr);
7266 *init_val = param_item->driverinit_value;
7272 __devlink_param_driverinit_value_set(struct devlink *devlink,
7273 unsigned int port_index,
7274 struct list_head *param_list, u32 param_id,
7275 union devlink_param_value init_val,
7276 enum devlink_command cmd)
7278 struct devlink_param_item *param_item;
7280 param_item = devlink_param_find_by_id(param_list, param_id);
7284 if (!devlink_param_cmode_is_supported(param_item->param,
7285 DEVLINK_PARAM_CMODE_DRIVERINIT))
7288 if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
7289 strcpy(param_item->driverinit_value.vstr, init_val.vstr);
7291 param_item->driverinit_value = init_val;
7292 param_item->driverinit_value_valid = true;
7294 devlink_param_notify(devlink, port_index, param_item, cmd);
7299 * devlink_param_driverinit_value_get - get configuration parameter
7300 * value for driver initializing
7303 * @param_id: parameter ID
7304 * @init_val: value of parameter in driverinit configuration mode
7306 * This function should be used by the driver to get driverinit
7307 * configuration for initialization after reload command.
7309 int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
7310 union devlink_param_value *init_val)
7312 if (!devlink_reload_supported(devlink))
7315 return __devlink_param_driverinit_value_get(&devlink->param_list,
7316 param_id, init_val);
7318 EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_get);
7321 * devlink_param_driverinit_value_set - set value of configuration
7322 * parameter for driverinit
7323 * configuration mode
7326 * @param_id: parameter ID
7327 * @init_val: value of parameter to set for driverinit configuration mode
7329 * This function should be used by the driver to set driverinit
7330 * configuration mode default value.
7332 int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
7333 union devlink_param_value init_val)
7335 return __devlink_param_driverinit_value_set(devlink, 0,
7336 &devlink->param_list,
7338 DEVLINK_CMD_PARAM_NEW);
7340 EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_set);
7343 * devlink_port_param_driverinit_value_get - get configuration parameter
7344 * value for driver initializing
7346 * @devlink_port: devlink_port
7347 * @param_id: parameter ID
7348 * @init_val: value of parameter in driverinit configuration mode
7350 * This function should be used by the driver to get driverinit
7351 * configuration for initialization after reload command.
7353 int devlink_port_param_driverinit_value_get(struct devlink_port *devlink_port,
7355 union devlink_param_value *init_val)
7357 struct devlink *devlink = devlink_port->devlink;
7359 if (!devlink_reload_supported(devlink))
7362 return __devlink_param_driverinit_value_get(&devlink_port->param_list,
7363 param_id, init_val);
7365 EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_get);
7368 * devlink_port_param_driverinit_value_set - set value of configuration
7369 * parameter for driverinit
7370 * configuration mode
7372 * @devlink_port: devlink_port
7373 * @param_id: parameter ID
7374 * @init_val: value of parameter to set for driverinit configuration mode
7376 * This function should be used by the driver to set driverinit
7377 * configuration mode default value.
7379 int devlink_port_param_driverinit_value_set(struct devlink_port *devlink_port,
7381 union devlink_param_value init_val)
7383 return __devlink_param_driverinit_value_set(devlink_port->devlink,
7384 devlink_port->index,
7385 &devlink_port->param_list,
7387 DEVLINK_CMD_PORT_PARAM_NEW);
7389 EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_set);
7392 * devlink_param_value_changed - notify devlink on a parameter's value
7393 * change. Should be called by the driver
7394 * right after the change.
7397 * @param_id: parameter ID
7399 * This function should be used by the driver to notify devlink on value
7400 * change, excluding driverinit configuration mode.
7401 * For driverinit configuration mode driver should use the function
7403 void devlink_param_value_changed(struct devlink *devlink, u32 param_id)
7405 struct devlink_param_item *param_item;
7407 param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
7408 WARN_ON(!param_item);
7410 devlink_param_notify(devlink, 0, param_item, DEVLINK_CMD_PARAM_NEW);
7412 EXPORT_SYMBOL_GPL(devlink_param_value_changed);
7415 * devlink_port_param_value_changed - notify devlink on a parameter's value
7416 * change. Should be called by the driver
7417 * right after the change.
7419 * @devlink_port: devlink_port
7420 * @param_id: parameter ID
7422 * This function should be used by the driver to notify devlink on value
7423 * change, excluding driverinit configuration mode.
7424 * For driverinit configuration mode driver should use the function
7425 * devlink_port_param_driverinit_value_set() instead.
7427 void devlink_port_param_value_changed(struct devlink_port *devlink_port,
7430 struct devlink_param_item *param_item;
7432 param_item = devlink_param_find_by_id(&devlink_port->param_list,
7434 WARN_ON(!param_item);
7436 devlink_param_notify(devlink_port->devlink, devlink_port->index,
7437 param_item, DEVLINK_CMD_PORT_PARAM_NEW);
7439 EXPORT_SYMBOL_GPL(devlink_port_param_value_changed);
7442 * devlink_param_value_str_fill - Safely fill-up the string preventing
7443 * from overflow of the preallocated buffer
7445 * @dst_val: destination devlink_param_value
7446 * @src: source buffer
7448 void devlink_param_value_str_fill(union devlink_param_value *dst_val,
7453 len = strlcpy(dst_val->vstr, src, __DEVLINK_PARAM_MAX_STRING_VALUE);
7454 WARN_ON(len >= __DEVLINK_PARAM_MAX_STRING_VALUE);
7456 EXPORT_SYMBOL_GPL(devlink_param_value_str_fill);
7459 * devlink_region_create - create a new address region
7462 * @region_name: region name
7463 * @region_max_snapshots: Maximum supported number of snapshots for region
7464 * @region_size: size of region
7466 struct devlink_region *devlink_region_create(struct devlink *devlink,
7467 const char *region_name,
7468 u32 region_max_snapshots,
7471 struct devlink_region *region;
7474 mutex_lock(&devlink->lock);
7476 if (devlink_region_get_by_name(devlink, region_name)) {
7481 region = kzalloc(sizeof(*region), GFP_KERNEL);
7487 region->devlink = devlink;
7488 region->max_snapshots = region_max_snapshots;
7489 region->name = region_name;
7490 region->size = region_size;
7491 INIT_LIST_HEAD(®ion->snapshot_list);
7492 list_add_tail(®ion->list, &devlink->region_list);
7493 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
7495 mutex_unlock(&devlink->lock);
7499 mutex_unlock(&devlink->lock);
7500 return ERR_PTR(err);
7502 EXPORT_SYMBOL_GPL(devlink_region_create);
7505 * devlink_region_destroy - destroy address region
7507 * @region: devlink region to destroy
7509 void devlink_region_destroy(struct devlink_region *region)
7511 struct devlink *devlink = region->devlink;
7512 struct devlink_snapshot *snapshot, *ts;
7514 mutex_lock(&devlink->lock);
7516 /* Free all snapshots of region */
7517 list_for_each_entry_safe(snapshot, ts, ®ion->snapshot_list, list)
7518 devlink_region_snapshot_del(region, snapshot);
7520 list_del(®ion->list);
7522 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL);
7523 mutex_unlock(&devlink->lock);
7526 EXPORT_SYMBOL_GPL(devlink_region_destroy);
7529 * devlink_region_shapshot_id_get - get snapshot ID
7531 * This callback should be called when adding a new snapshot,
7532 * Driver should use the same id for multiple snapshots taken
7533 * on multiple regions at the same time/by the same trigger.
7537 u32 devlink_region_shapshot_id_get(struct devlink *devlink)
7541 mutex_lock(&devlink->lock);
7542 id = ++devlink->snapshot_id;
7543 mutex_unlock(&devlink->lock);
7547 EXPORT_SYMBOL_GPL(devlink_region_shapshot_id_get);
7550 * devlink_region_snapshot_create - create a new snapshot
7551 * This will add a new snapshot of a region. The snapshot
7552 * will be stored on the region struct and can be accessed
7553 * from devlink. This is useful for future analyses of snapshots.
7554 * Multiple snapshots can be created on a region.
7555 * The @snapshot_id should be obtained using the getter function.
7557 * @region: devlink region of the snapshot
7558 * @data: snapshot data
7559 * @snapshot_id: snapshot id to be created
7560 * @data_destructor: pointer to destructor function to free data
7562 int devlink_region_snapshot_create(struct devlink_region *region,
7563 u8 *data, u32 snapshot_id,
7564 devlink_snapshot_data_dest_t *data_destructor)
7566 struct devlink *devlink = region->devlink;
7567 struct devlink_snapshot *snapshot;
7570 mutex_lock(&devlink->lock);
7572 /* check if region can hold one more snapshot */
7573 if (region->cur_snapshots == region->max_snapshots) {
7578 if (devlink_region_snapshot_get_by_id(region, snapshot_id)) {
7583 snapshot = kzalloc(sizeof(*snapshot), GFP_KERNEL);
7589 snapshot->id = snapshot_id;
7590 snapshot->region = region;
7591 snapshot->data = data;
7592 snapshot->data_destructor = data_destructor;
7594 list_add_tail(&snapshot->list, ®ion->snapshot_list);
7596 region->cur_snapshots++;
7598 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_NEW);
7599 mutex_unlock(&devlink->lock);
7603 mutex_unlock(&devlink->lock);
7606 EXPORT_SYMBOL_GPL(devlink_region_snapshot_create);
7608 #define DEVLINK_TRAP(_id, _type) \
7610 .type = DEVLINK_TRAP_TYPE_##_type, \
7611 .id = DEVLINK_TRAP_GENERIC_ID_##_id, \
7612 .name = DEVLINK_TRAP_GENERIC_NAME_##_id, \
7615 static const struct devlink_trap devlink_trap_generic[] = {
7616 DEVLINK_TRAP(SMAC_MC, DROP),
7617 DEVLINK_TRAP(VLAN_TAG_MISMATCH, DROP),
7618 DEVLINK_TRAP(INGRESS_VLAN_FILTER, DROP),
7619 DEVLINK_TRAP(INGRESS_STP_FILTER, DROP),
7620 DEVLINK_TRAP(EMPTY_TX_LIST, DROP),
7621 DEVLINK_TRAP(PORT_LOOPBACK_FILTER, DROP),
7622 DEVLINK_TRAP(BLACKHOLE_ROUTE, DROP),
7623 DEVLINK_TRAP(TTL_ERROR, EXCEPTION),
7624 DEVLINK_TRAP(TAIL_DROP, DROP),
7627 #define DEVLINK_TRAP_GROUP(_id) \
7629 .id = DEVLINK_TRAP_GROUP_GENERIC_ID_##_id, \
7630 .name = DEVLINK_TRAP_GROUP_GENERIC_NAME_##_id, \
7633 static const struct devlink_trap_group devlink_trap_group_generic[] = {
7634 DEVLINK_TRAP_GROUP(L2_DROPS),
7635 DEVLINK_TRAP_GROUP(L3_DROPS),
7636 DEVLINK_TRAP_GROUP(BUFFER_DROPS),
7639 static int devlink_trap_generic_verify(const struct devlink_trap *trap)
7641 if (trap->id > DEVLINK_TRAP_GENERIC_ID_MAX)
7644 if (strcmp(trap->name, devlink_trap_generic[trap->id].name))
7647 if (trap->type != devlink_trap_generic[trap->id].type)
7653 static int devlink_trap_driver_verify(const struct devlink_trap *trap)
7657 if (trap->id <= DEVLINK_TRAP_GENERIC_ID_MAX)
7660 for (i = 0; i < ARRAY_SIZE(devlink_trap_generic); i++) {
7661 if (!strcmp(trap->name, devlink_trap_generic[i].name))
7668 static int devlink_trap_verify(const struct devlink_trap *trap)
7670 if (!trap || !trap->name || !trap->group.name)
7674 return devlink_trap_generic_verify(trap);
7676 return devlink_trap_driver_verify(trap);
7680 devlink_trap_group_generic_verify(const struct devlink_trap_group *group)
7682 if (group->id > DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
7685 if (strcmp(group->name, devlink_trap_group_generic[group->id].name))
7692 devlink_trap_group_driver_verify(const struct devlink_trap_group *group)
7696 if (group->id <= DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
7699 for (i = 0; i < ARRAY_SIZE(devlink_trap_group_generic); i++) {
7700 if (!strcmp(group->name, devlink_trap_group_generic[i].name))
7707 static int devlink_trap_group_verify(const struct devlink_trap_group *group)
7710 return devlink_trap_group_generic_verify(group);
7712 return devlink_trap_group_driver_verify(group);
7716 devlink_trap_group_notify(struct devlink *devlink,
7717 const struct devlink_trap_group_item *group_item,
7718 enum devlink_command cmd)
7720 struct sk_buff *msg;
7723 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_GROUP_NEW &&
7724 cmd != DEVLINK_CMD_TRAP_GROUP_DEL);
7726 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7730 err = devlink_nl_trap_group_fill(msg, devlink, group_item, cmd, 0, 0,
7737 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
7738 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
7741 static struct devlink_trap_group_item *
7742 devlink_trap_group_item_create(struct devlink *devlink,
7743 const struct devlink_trap_group *group)
7745 struct devlink_trap_group_item *group_item;
7748 err = devlink_trap_group_verify(group);
7750 return ERR_PTR(err);
7752 group_item = kzalloc(sizeof(*group_item), GFP_KERNEL);
7754 return ERR_PTR(-ENOMEM);
7756 group_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
7757 if (!group_item->stats) {
7759 goto err_stats_alloc;
7762 group_item->group = group;
7763 refcount_set(&group_item->refcount, 1);
7765 if (devlink->ops->trap_group_init) {
7766 err = devlink->ops->trap_group_init(devlink, group);
7768 goto err_group_init;
7771 list_add_tail(&group_item->list, &devlink->trap_group_list);
7772 devlink_trap_group_notify(devlink, group_item,
7773 DEVLINK_CMD_TRAP_GROUP_NEW);
7778 free_percpu(group_item->stats);
7781 return ERR_PTR(err);
7785 devlink_trap_group_item_destroy(struct devlink *devlink,
7786 struct devlink_trap_group_item *group_item)
7788 devlink_trap_group_notify(devlink, group_item,
7789 DEVLINK_CMD_TRAP_GROUP_DEL);
7790 list_del(&group_item->list);
7791 free_percpu(group_item->stats);
7795 static struct devlink_trap_group_item *
7796 devlink_trap_group_item_get(struct devlink *devlink,
7797 const struct devlink_trap_group *group)
7799 struct devlink_trap_group_item *group_item;
7801 group_item = devlink_trap_group_item_lookup(devlink, group->name);
7803 refcount_inc(&group_item->refcount);
7807 return devlink_trap_group_item_create(devlink, group);
7811 devlink_trap_group_item_put(struct devlink *devlink,
7812 struct devlink_trap_group_item *group_item)
7814 if (!refcount_dec_and_test(&group_item->refcount))
7817 devlink_trap_group_item_destroy(devlink, group_item);
7821 devlink_trap_item_group_link(struct devlink *devlink,
7822 struct devlink_trap_item *trap_item)
7824 struct devlink_trap_group_item *group_item;
7826 group_item = devlink_trap_group_item_get(devlink,
7827 &trap_item->trap->group);
7828 if (IS_ERR(group_item))
7829 return PTR_ERR(group_item);
7831 trap_item->group_item = group_item;
7837 devlink_trap_item_group_unlink(struct devlink *devlink,
7838 struct devlink_trap_item *trap_item)
7840 devlink_trap_group_item_put(devlink, trap_item->group_item);
7843 static void devlink_trap_notify(struct devlink *devlink,
7844 const struct devlink_trap_item *trap_item,
7845 enum devlink_command cmd)
7847 struct sk_buff *msg;
7850 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_NEW &&
7851 cmd != DEVLINK_CMD_TRAP_DEL);
7853 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7857 err = devlink_nl_trap_fill(msg, devlink, trap_item, cmd, 0, 0, 0);
7863 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
7864 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
7868 devlink_trap_register(struct devlink *devlink,
7869 const struct devlink_trap *trap, void *priv)
7871 struct devlink_trap_item *trap_item;
7874 if (devlink_trap_item_lookup(devlink, trap->name))
7877 trap_item = kzalloc(sizeof(*trap_item), GFP_KERNEL);
7881 trap_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
7882 if (!trap_item->stats) {
7884 goto err_stats_alloc;
7887 trap_item->trap = trap;
7888 trap_item->action = trap->init_action;
7889 trap_item->priv = priv;
7891 err = devlink_trap_item_group_link(devlink, trap_item);
7893 goto err_group_link;
7895 err = devlink->ops->trap_init(devlink, trap, trap_item);
7899 list_add_tail(&trap_item->list, &devlink->trap_list);
7900 devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_NEW);
7905 devlink_trap_item_group_unlink(devlink, trap_item);
7907 free_percpu(trap_item->stats);
7913 static void devlink_trap_unregister(struct devlink *devlink,
7914 const struct devlink_trap *trap)
7916 struct devlink_trap_item *trap_item;
7918 trap_item = devlink_trap_item_lookup(devlink, trap->name);
7919 if (WARN_ON_ONCE(!trap_item))
7922 devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_DEL);
7923 list_del(&trap_item->list);
7924 if (devlink->ops->trap_fini)
7925 devlink->ops->trap_fini(devlink, trap, trap_item);
7926 devlink_trap_item_group_unlink(devlink, trap_item);
7927 free_percpu(trap_item->stats);
7931 static void devlink_trap_disable(struct devlink *devlink,
7932 const struct devlink_trap *trap)
7934 struct devlink_trap_item *trap_item;
7936 trap_item = devlink_trap_item_lookup(devlink, trap->name);
7937 if (WARN_ON_ONCE(!trap_item))
7940 devlink->ops->trap_action_set(devlink, trap, DEVLINK_TRAP_ACTION_DROP);
7941 trap_item->action = DEVLINK_TRAP_ACTION_DROP;
7945 * devlink_traps_register - Register packet traps with devlink.
7946 * @devlink: devlink.
7947 * @traps: Packet traps.
7948 * @traps_count: Count of provided packet traps.
7949 * @priv: Driver private information.
7951 * Return: Non-zero value on failure.
7953 int devlink_traps_register(struct devlink *devlink,
7954 const struct devlink_trap *traps,
7955 size_t traps_count, void *priv)
7959 if (!devlink->ops->trap_init || !devlink->ops->trap_action_set)
7962 mutex_lock(&devlink->lock);
7963 for (i = 0; i < traps_count; i++) {
7964 const struct devlink_trap *trap = &traps[i];
7966 err = devlink_trap_verify(trap);
7968 goto err_trap_verify;
7970 err = devlink_trap_register(devlink, trap, priv);
7972 goto err_trap_register;
7974 mutex_unlock(&devlink->lock);
7980 for (i--; i >= 0; i--)
7981 devlink_trap_unregister(devlink, &traps[i]);
7982 mutex_unlock(&devlink->lock);
7985 EXPORT_SYMBOL_GPL(devlink_traps_register);
7988 * devlink_traps_unregister - Unregister packet traps from devlink.
7989 * @devlink: devlink.
7990 * @traps: Packet traps.
7991 * @traps_count: Count of provided packet traps.
7993 void devlink_traps_unregister(struct devlink *devlink,
7994 const struct devlink_trap *traps,
7999 mutex_lock(&devlink->lock);
8000 /* Make sure we do not have any packets in-flight while unregistering
8001 * traps by disabling all of them and waiting for a grace period.
8003 for (i = traps_count - 1; i >= 0; i--)
8004 devlink_trap_disable(devlink, &traps[i]);
8006 for (i = traps_count - 1; i >= 0; i--)
8007 devlink_trap_unregister(devlink, &traps[i]);
8008 mutex_unlock(&devlink->lock);
8010 EXPORT_SYMBOL_GPL(devlink_traps_unregister);
8013 devlink_trap_stats_update(struct devlink_stats __percpu *trap_stats,
8016 struct devlink_stats *stats;
8018 stats = this_cpu_ptr(trap_stats);
8019 u64_stats_update_begin(&stats->syncp);
8020 stats->rx_bytes += skb_len;
8021 stats->rx_packets++;
8022 u64_stats_update_end(&stats->syncp);
8026 devlink_trap_report_metadata_fill(struct net_dm_hw_metadata *hw_metadata,
8027 const struct devlink_trap_item *trap_item,
8028 struct devlink_port *in_devlink_port)
8030 struct devlink_trap_group_item *group_item = trap_item->group_item;
8032 hw_metadata->trap_group_name = group_item->group->name;
8033 hw_metadata->trap_name = trap_item->trap->name;
8035 spin_lock(&in_devlink_port->type_lock);
8036 if (in_devlink_port->type == DEVLINK_PORT_TYPE_ETH)
8037 hw_metadata->input_dev = in_devlink_port->type_dev;
8038 spin_unlock(&in_devlink_port->type_lock);
8042 * devlink_trap_report - Report trapped packet to drop monitor.
8043 * @devlink: devlink.
8044 * @skb: Trapped packet.
8045 * @trap_ctx: Trap context.
8046 * @in_devlink_port: Input devlink port.
8048 void devlink_trap_report(struct devlink *devlink, struct sk_buff *skb,
8049 void *trap_ctx, struct devlink_port *in_devlink_port)
8051 struct devlink_trap_item *trap_item = trap_ctx;
8052 struct net_dm_hw_metadata hw_metadata = {};
8054 devlink_trap_stats_update(trap_item->stats, skb->len);
8055 devlink_trap_stats_update(trap_item->group_item->stats, skb->len);
8057 devlink_trap_report_metadata_fill(&hw_metadata, trap_item,
8059 net_dm_hw_report(skb, &hw_metadata);
8061 EXPORT_SYMBOL_GPL(devlink_trap_report);
8064 * devlink_trap_ctx_priv - Trap context to driver private information.
8065 * @trap_ctx: Trap context.
8067 * Return: Driver private information passed during registration.
8069 void *devlink_trap_ctx_priv(void *trap_ctx)
8071 struct devlink_trap_item *trap_item = trap_ctx;
8073 return trap_item->priv;
8075 EXPORT_SYMBOL_GPL(devlink_trap_ctx_priv);
8077 static void __devlink_compat_running_version(struct devlink *devlink,
8078 char *buf, size_t len)
8080 const struct nlattr *nlattr;
8081 struct devlink_info_req req;
8082 struct sk_buff *msg;
8085 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8090 err = devlink->ops->info_get(devlink, &req, NULL);
8094 nla_for_each_attr(nlattr, (void *)msg->data, msg->len, rem) {
8095 const struct nlattr *kv;
8098 if (nla_type(nlattr) != DEVLINK_ATTR_INFO_VERSION_RUNNING)
8101 nla_for_each_nested(kv, nlattr, rem_kv) {
8102 if (nla_type(kv) != DEVLINK_ATTR_INFO_VERSION_VALUE)
8105 strlcat(buf, nla_data(kv), len);
8106 strlcat(buf, " ", len);
8113 void devlink_compat_running_version(struct net_device *dev,
8114 char *buf, size_t len)
8116 struct devlink *devlink;
8121 devlink = netdev_to_devlink(dev);
8122 if (!devlink || !devlink->ops->info_get)
8125 mutex_lock(&devlink->lock);
8126 __devlink_compat_running_version(devlink, buf, len);
8127 mutex_unlock(&devlink->lock);
8134 int devlink_compat_flash_update(struct net_device *dev, const char *file_name)
8136 struct devlink *devlink;
8142 devlink = netdev_to_devlink(dev);
8143 if (!devlink || !devlink->ops->flash_update) {
8148 mutex_lock(&devlink->lock);
8149 ret = devlink->ops->flash_update(devlink, file_name, NULL, NULL);
8150 mutex_unlock(&devlink->lock);
8159 int devlink_compat_phys_port_name_get(struct net_device *dev,
8160 char *name, size_t len)
8162 struct devlink_port *devlink_port;
8164 /* RTNL mutex is held here which ensures that devlink_port
8165 * instance cannot disappear in the middle. No need to take
8166 * any devlink lock as only permanent values are accessed.
8170 devlink_port = netdev_to_devlink_port(dev);
8174 return __devlink_port_phys_port_name_get(devlink_port, name, len);
8177 int devlink_compat_switch_id_get(struct net_device *dev,
8178 struct netdev_phys_item_id *ppid)
8180 struct devlink_port *devlink_port;
8182 /* Caller must hold RTNL mutex or reference to dev, which ensures that
8183 * devlink_port instance cannot disappear in the middle. No need to take
8184 * any devlink lock as only permanent values are accessed.
8186 devlink_port = netdev_to_devlink_port(dev);
8187 if (!devlink_port || !devlink_port->attrs.switch_port)
8190 memcpy(ppid, &devlink_port->attrs.switch_id, sizeof(*ppid));
8195 static void __net_exit devlink_pernet_pre_exit(struct net *net)
8197 struct devlink *devlink;
8200 /* In case network namespace is getting destroyed, reload
8201 * all devlink instances from this namespace into init_net.
8203 mutex_lock(&devlink_mutex);
8204 list_for_each_entry(devlink, &devlink_list, list) {
8205 if (net_eq(devlink_net(devlink), net)) {
8206 if (WARN_ON(!devlink_reload_supported(devlink)))
8208 err = devlink_reload(devlink, &init_net, NULL);
8210 pr_warn("Failed to reload devlink instance into init_net\n");
8213 mutex_unlock(&devlink_mutex);
8216 static struct pernet_operations devlink_pernet_ops __net_initdata = {
8217 .pre_exit = devlink_pernet_pre_exit,
8220 static int __init devlink_init(void)
8224 err = genl_register_family(&devlink_nl_family);
8227 err = register_pernet_subsys(&devlink_pernet_ops);
8234 subsys_initcall(devlink_init);