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;
347 const struct devlink_region_ops *ops;
348 struct list_head snapshot_list;
354 struct devlink_snapshot {
355 struct list_head list;
356 struct devlink_region *region;
361 static struct devlink_region *
362 devlink_region_get_by_name(struct devlink *devlink, const char *region_name)
364 struct devlink_region *region;
366 list_for_each_entry(region, &devlink->region_list, list)
367 if (!strcmp(region->ops->name, region_name))
373 static struct devlink_snapshot *
374 devlink_region_snapshot_get_by_id(struct devlink_region *region, u32 id)
376 struct devlink_snapshot *snapshot;
378 list_for_each_entry(snapshot, ®ion->snapshot_list, list)
379 if (snapshot->id == id)
385 #define DEVLINK_NL_FLAG_NEED_DEVLINK BIT(0)
386 #define DEVLINK_NL_FLAG_NEED_PORT BIT(1)
387 #define DEVLINK_NL_FLAG_NEED_SB BIT(2)
389 /* The per devlink instance lock is taken by default in the pre-doit
390 * operation, yet several commands do not require this. The global
391 * devlink lock is taken and protects from disruption by user-calls.
393 #define DEVLINK_NL_FLAG_NO_LOCK BIT(3)
395 static int devlink_nl_pre_doit(const struct genl_ops *ops,
396 struct sk_buff *skb, struct genl_info *info)
398 struct devlink *devlink;
401 mutex_lock(&devlink_mutex);
402 devlink = devlink_get_from_info(info);
403 if (IS_ERR(devlink)) {
404 mutex_unlock(&devlink_mutex);
405 return PTR_ERR(devlink);
407 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
408 mutex_lock(&devlink->lock);
409 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_DEVLINK) {
410 info->user_ptr[0] = devlink;
411 } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT) {
412 struct devlink_port *devlink_port;
414 devlink_port = devlink_port_get_from_info(devlink, info);
415 if (IS_ERR(devlink_port)) {
416 err = PTR_ERR(devlink_port);
419 info->user_ptr[0] = devlink_port;
421 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_SB) {
422 struct devlink_sb *devlink_sb;
424 devlink_sb = devlink_sb_get_from_info(devlink, info);
425 if (IS_ERR(devlink_sb)) {
426 err = PTR_ERR(devlink_sb);
429 info->user_ptr[1] = devlink_sb;
434 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
435 mutex_unlock(&devlink->lock);
436 mutex_unlock(&devlink_mutex);
440 static void devlink_nl_post_doit(const struct genl_ops *ops,
441 struct sk_buff *skb, struct genl_info *info)
443 struct devlink *devlink;
445 /* When devlink changes netns, it would not be found
446 * by devlink_get_from_info(). So try if it is stored first.
448 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_DEVLINK) {
449 devlink = info->user_ptr[0];
451 devlink = devlink_get_from_info(info);
452 WARN_ON(IS_ERR(devlink));
454 if (!IS_ERR(devlink) && ~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
455 mutex_unlock(&devlink->lock);
456 mutex_unlock(&devlink_mutex);
459 static struct genl_family devlink_nl_family;
461 enum devlink_multicast_groups {
462 DEVLINK_MCGRP_CONFIG,
465 static const struct genl_multicast_group devlink_nl_mcgrps[] = {
466 [DEVLINK_MCGRP_CONFIG] = { .name = DEVLINK_GENL_MCGRP_CONFIG_NAME },
469 static int devlink_nl_put_handle(struct sk_buff *msg, struct devlink *devlink)
471 if (nla_put_string(msg, DEVLINK_ATTR_BUS_NAME, devlink->dev->bus->name))
473 if (nla_put_string(msg, DEVLINK_ATTR_DEV_NAME, dev_name(devlink->dev)))
478 static int devlink_nl_fill(struct sk_buff *msg, struct devlink *devlink,
479 enum devlink_command cmd, u32 portid,
484 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
488 if (devlink_nl_put_handle(msg, devlink))
489 goto nla_put_failure;
490 if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_FAILED, devlink->reload_failed))
491 goto nla_put_failure;
493 genlmsg_end(msg, hdr);
497 genlmsg_cancel(msg, hdr);
501 static void devlink_notify(struct devlink *devlink, enum devlink_command cmd)
506 WARN_ON(cmd != DEVLINK_CMD_NEW && cmd != DEVLINK_CMD_DEL);
508 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
512 err = devlink_nl_fill(msg, devlink, cmd, 0, 0, 0);
518 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
519 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
522 static int devlink_nl_port_attrs_put(struct sk_buff *msg,
523 struct devlink_port *devlink_port)
525 struct devlink_port_attrs *attrs = &devlink_port->attrs;
529 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_FLAVOUR, attrs->flavour))
531 switch (devlink_port->attrs.flavour) {
532 case DEVLINK_PORT_FLAVOUR_PCI_PF:
533 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER,
537 case DEVLINK_PORT_FLAVOUR_PCI_VF:
538 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER,
540 nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_VF_NUMBER,
544 case DEVLINK_PORT_FLAVOUR_PHYSICAL:
545 case DEVLINK_PORT_FLAVOUR_CPU:
546 case DEVLINK_PORT_FLAVOUR_DSA:
547 case DEVLINK_PORT_FLAVOUR_VIRTUAL:
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, struct devlink *devlink)
2108 struct devlink_dpipe_table *table;
2109 list_for_each_entry_rcu(table, dpipe_tables, list,
2110 lockdep_is_held(&devlink->lock)) {
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,
2229 table_name, devlink);
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,
2385 table_name, devlink);
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_MOD(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_MOD(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 if (!devlink->reload_enabled)
2797 err = devlink->ops->reload_down(devlink, !!dest_net, extack);
2801 if (dest_net && !net_eq(dest_net, devlink_net(devlink)))
2802 devlink_reload_netns_change(devlink, dest_net);
2804 err = devlink->ops->reload_up(devlink, extack);
2805 devlink_reload_failed_set(devlink, !!err);
2809 static int devlink_nl_cmd_reload(struct sk_buff *skb, struct genl_info *info)
2811 struct devlink *devlink = info->user_ptr[0];
2812 struct net *dest_net = NULL;
2815 if (!devlink_reload_supported(devlink) || !devlink->reload_enabled)
2818 err = devlink_resources_validate(devlink, NULL, info);
2820 NL_SET_ERR_MSG_MOD(info->extack, "resources size validation failed");
2824 if (info->attrs[DEVLINK_ATTR_NETNS_PID] ||
2825 info->attrs[DEVLINK_ATTR_NETNS_FD] ||
2826 info->attrs[DEVLINK_ATTR_NETNS_ID]) {
2827 dest_net = devlink_netns_get(skb, info);
2828 if (IS_ERR(dest_net))
2829 return PTR_ERR(dest_net);
2832 err = devlink_reload(devlink, dest_net, info->extack);
2840 static int devlink_nl_flash_update_fill(struct sk_buff *msg,
2841 struct devlink *devlink,
2842 enum devlink_command cmd,
2843 const char *status_msg,
2844 const char *component,
2845 unsigned long done, unsigned long total)
2849 hdr = genlmsg_put(msg, 0, 0, &devlink_nl_family, 0, cmd);
2853 if (devlink_nl_put_handle(msg, devlink))
2854 goto nla_put_failure;
2856 if (cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS)
2860 nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_MSG,
2862 goto nla_put_failure;
2864 nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_COMPONENT,
2866 goto nla_put_failure;
2867 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_DONE,
2868 done, DEVLINK_ATTR_PAD))
2869 goto nla_put_failure;
2870 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TOTAL,
2871 total, DEVLINK_ATTR_PAD))
2872 goto nla_put_failure;
2875 genlmsg_end(msg, hdr);
2879 genlmsg_cancel(msg, hdr);
2883 static void __devlink_flash_update_notify(struct devlink *devlink,
2884 enum devlink_command cmd,
2885 const char *status_msg,
2886 const char *component,
2888 unsigned long total)
2890 struct sk_buff *msg;
2893 WARN_ON(cmd != DEVLINK_CMD_FLASH_UPDATE &&
2894 cmd != DEVLINK_CMD_FLASH_UPDATE_END &&
2895 cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS);
2897 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2901 err = devlink_nl_flash_update_fill(msg, devlink, cmd, status_msg,
2902 component, done, total);
2906 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
2907 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
2914 void devlink_flash_update_begin_notify(struct devlink *devlink)
2916 __devlink_flash_update_notify(devlink,
2917 DEVLINK_CMD_FLASH_UPDATE,
2920 EXPORT_SYMBOL_GPL(devlink_flash_update_begin_notify);
2922 void devlink_flash_update_end_notify(struct devlink *devlink)
2924 __devlink_flash_update_notify(devlink,
2925 DEVLINK_CMD_FLASH_UPDATE_END,
2928 EXPORT_SYMBOL_GPL(devlink_flash_update_end_notify);
2930 void devlink_flash_update_status_notify(struct devlink *devlink,
2931 const char *status_msg,
2932 const char *component,
2934 unsigned long total)
2936 __devlink_flash_update_notify(devlink,
2937 DEVLINK_CMD_FLASH_UPDATE_STATUS,
2938 status_msg, component, done, total);
2940 EXPORT_SYMBOL_GPL(devlink_flash_update_status_notify);
2942 static int devlink_nl_cmd_flash_update(struct sk_buff *skb,
2943 struct genl_info *info)
2945 struct devlink *devlink = info->user_ptr[0];
2946 const char *file_name, *component;
2947 struct nlattr *nla_component;
2949 if (!devlink->ops->flash_update)
2952 if (!info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME])
2954 file_name = nla_data(info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME]);
2956 nla_component = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_COMPONENT];
2957 component = nla_component ? nla_data(nla_component) : NULL;
2959 return devlink->ops->flash_update(devlink, file_name, component,
2963 static const struct devlink_param devlink_param_generic[] = {
2965 .id = DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET,
2966 .name = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_NAME,
2967 .type = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_TYPE,
2970 .id = DEVLINK_PARAM_GENERIC_ID_MAX_MACS,
2971 .name = DEVLINK_PARAM_GENERIC_MAX_MACS_NAME,
2972 .type = DEVLINK_PARAM_GENERIC_MAX_MACS_TYPE,
2975 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_SRIOV,
2976 .name = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_NAME,
2977 .type = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_TYPE,
2980 .id = DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT,
2981 .name = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_NAME,
2982 .type = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_TYPE,
2985 .id = DEVLINK_PARAM_GENERIC_ID_IGNORE_ARI,
2986 .name = DEVLINK_PARAM_GENERIC_IGNORE_ARI_NAME,
2987 .type = DEVLINK_PARAM_GENERIC_IGNORE_ARI_TYPE,
2990 .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX,
2991 .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_NAME,
2992 .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_TYPE,
2995 .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN,
2996 .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_NAME,
2997 .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_TYPE,
3000 .id = DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY,
3001 .name = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_NAME,
3002 .type = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_TYPE,
3005 .id = DEVLINK_PARAM_GENERIC_ID_RESET_DEV_ON_DRV_PROBE,
3006 .name = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_NAME,
3007 .type = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_TYPE,
3010 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_ROCE,
3011 .name = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_NAME,
3012 .type = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_TYPE,
3016 static int devlink_param_generic_verify(const struct devlink_param *param)
3018 /* verify it match generic parameter by id and name */
3019 if (param->id > DEVLINK_PARAM_GENERIC_ID_MAX)
3021 if (strcmp(param->name, devlink_param_generic[param->id].name))
3024 WARN_ON(param->type != devlink_param_generic[param->id].type);
3029 static int devlink_param_driver_verify(const struct devlink_param *param)
3033 if (param->id <= DEVLINK_PARAM_GENERIC_ID_MAX)
3035 /* verify no such name in generic params */
3036 for (i = 0; i <= DEVLINK_PARAM_GENERIC_ID_MAX; i++)
3037 if (!strcmp(param->name, devlink_param_generic[i].name))
3043 static struct devlink_param_item *
3044 devlink_param_find_by_name(struct list_head *param_list,
3045 const char *param_name)
3047 struct devlink_param_item *param_item;
3049 list_for_each_entry(param_item, param_list, list)
3050 if (!strcmp(param_item->param->name, param_name))
3055 static struct devlink_param_item *
3056 devlink_param_find_by_id(struct list_head *param_list, u32 param_id)
3058 struct devlink_param_item *param_item;
3060 list_for_each_entry(param_item, param_list, list)
3061 if (param_item->param->id == param_id)
3067 devlink_param_cmode_is_supported(const struct devlink_param *param,
3068 enum devlink_param_cmode cmode)
3070 return test_bit(cmode, ¶m->supported_cmodes);
3073 static int devlink_param_get(struct devlink *devlink,
3074 const struct devlink_param *param,
3075 struct devlink_param_gset_ctx *ctx)
3079 return param->get(devlink, param->id, ctx);
3082 static int devlink_param_set(struct devlink *devlink,
3083 const struct devlink_param *param,
3084 struct devlink_param_gset_ctx *ctx)
3088 return param->set(devlink, param->id, ctx);
3092 devlink_param_type_to_nla_type(enum devlink_param_type param_type)
3094 switch (param_type) {
3095 case DEVLINK_PARAM_TYPE_U8:
3097 case DEVLINK_PARAM_TYPE_U16:
3099 case DEVLINK_PARAM_TYPE_U32:
3101 case DEVLINK_PARAM_TYPE_STRING:
3103 case DEVLINK_PARAM_TYPE_BOOL:
3111 devlink_nl_param_value_fill_one(struct sk_buff *msg,
3112 enum devlink_param_type type,
3113 enum devlink_param_cmode cmode,
3114 union devlink_param_value val)
3116 struct nlattr *param_value_attr;
3118 param_value_attr = nla_nest_start_noflag(msg,
3119 DEVLINK_ATTR_PARAM_VALUE);
3120 if (!param_value_attr)
3121 goto nla_put_failure;
3123 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_CMODE, cmode))
3124 goto value_nest_cancel;
3127 case DEVLINK_PARAM_TYPE_U8:
3128 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu8))
3129 goto value_nest_cancel;
3131 case DEVLINK_PARAM_TYPE_U16:
3132 if (nla_put_u16(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu16))
3133 goto value_nest_cancel;
3135 case DEVLINK_PARAM_TYPE_U32:
3136 if (nla_put_u32(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu32))
3137 goto value_nest_cancel;
3139 case DEVLINK_PARAM_TYPE_STRING:
3140 if (nla_put_string(msg, DEVLINK_ATTR_PARAM_VALUE_DATA,
3142 goto value_nest_cancel;
3144 case DEVLINK_PARAM_TYPE_BOOL:
3146 nla_put_flag(msg, DEVLINK_ATTR_PARAM_VALUE_DATA))
3147 goto value_nest_cancel;
3151 nla_nest_end(msg, param_value_attr);
3155 nla_nest_cancel(msg, param_value_attr);
3160 static int devlink_nl_param_fill(struct sk_buff *msg, struct devlink *devlink,
3161 unsigned int port_index,
3162 struct devlink_param_item *param_item,
3163 enum devlink_command cmd,
3164 u32 portid, u32 seq, int flags)
3166 union devlink_param_value param_value[DEVLINK_PARAM_CMODE_MAX + 1];
3167 bool param_value_set[DEVLINK_PARAM_CMODE_MAX + 1] = {};
3168 const struct devlink_param *param = param_item->param;
3169 struct devlink_param_gset_ctx ctx;
3170 struct nlattr *param_values_list;
3171 struct nlattr *param_attr;
3177 /* Get value from driver part to driverinit configuration mode */
3178 for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
3179 if (!devlink_param_cmode_is_supported(param, i))
3181 if (i == DEVLINK_PARAM_CMODE_DRIVERINIT) {
3182 if (!param_item->driverinit_value_valid)
3184 param_value[i] = param_item->driverinit_value;
3186 if (!param_item->published)
3189 err = devlink_param_get(devlink, param, &ctx);
3192 param_value[i] = ctx.val;
3194 param_value_set[i] = true;
3197 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
3201 if (devlink_nl_put_handle(msg, devlink))
3202 goto genlmsg_cancel;
3204 if (cmd == DEVLINK_CMD_PORT_PARAM_GET ||
3205 cmd == DEVLINK_CMD_PORT_PARAM_NEW ||
3206 cmd == DEVLINK_CMD_PORT_PARAM_DEL)
3207 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, port_index))
3208 goto genlmsg_cancel;
3210 param_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PARAM);
3212 goto genlmsg_cancel;
3213 if (nla_put_string(msg, DEVLINK_ATTR_PARAM_NAME, param->name))
3214 goto param_nest_cancel;
3215 if (param->generic && nla_put_flag(msg, DEVLINK_ATTR_PARAM_GENERIC))
3216 goto param_nest_cancel;
3218 nla_type = devlink_param_type_to_nla_type(param->type);
3220 goto param_nest_cancel;
3221 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_TYPE, nla_type))
3222 goto param_nest_cancel;
3224 param_values_list = nla_nest_start_noflag(msg,
3225 DEVLINK_ATTR_PARAM_VALUES_LIST);
3226 if (!param_values_list)
3227 goto param_nest_cancel;
3229 for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
3230 if (!param_value_set[i])
3232 err = devlink_nl_param_value_fill_one(msg, param->type,
3235 goto values_list_nest_cancel;
3238 nla_nest_end(msg, param_values_list);
3239 nla_nest_end(msg, param_attr);
3240 genlmsg_end(msg, hdr);
3243 values_list_nest_cancel:
3244 nla_nest_end(msg, param_values_list);
3246 nla_nest_cancel(msg, param_attr);
3248 genlmsg_cancel(msg, hdr);
3252 static void devlink_param_notify(struct devlink *devlink,
3253 unsigned int port_index,
3254 struct devlink_param_item *param_item,
3255 enum devlink_command cmd)
3257 struct sk_buff *msg;
3260 WARN_ON(cmd != DEVLINK_CMD_PARAM_NEW && cmd != DEVLINK_CMD_PARAM_DEL &&
3261 cmd != DEVLINK_CMD_PORT_PARAM_NEW &&
3262 cmd != DEVLINK_CMD_PORT_PARAM_DEL);
3264 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3267 err = devlink_nl_param_fill(msg, devlink, port_index, param_item, cmd,
3274 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
3275 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
3278 static int devlink_nl_cmd_param_get_dumpit(struct sk_buff *msg,
3279 struct netlink_callback *cb)
3281 struct devlink_param_item *param_item;
3282 struct devlink *devlink;
3283 int start = cb->args[0];
3287 mutex_lock(&devlink_mutex);
3288 list_for_each_entry(devlink, &devlink_list, list) {
3289 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
3291 mutex_lock(&devlink->lock);
3292 list_for_each_entry(param_item, &devlink->param_list, list) {
3297 err = devlink_nl_param_fill(msg, devlink, 0, param_item,
3298 DEVLINK_CMD_PARAM_GET,
3299 NETLINK_CB(cb->skb).portid,
3302 if (err && err != -EOPNOTSUPP) {
3303 mutex_unlock(&devlink->lock);
3308 mutex_unlock(&devlink->lock);
3311 mutex_unlock(&devlink_mutex);
3313 if (err != -EMSGSIZE)
3321 devlink_param_type_get_from_info(struct genl_info *info,
3322 enum devlink_param_type *param_type)
3324 if (!info->attrs[DEVLINK_ATTR_PARAM_TYPE])
3327 switch (nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_TYPE])) {
3329 *param_type = DEVLINK_PARAM_TYPE_U8;
3332 *param_type = DEVLINK_PARAM_TYPE_U16;
3335 *param_type = DEVLINK_PARAM_TYPE_U32;
3338 *param_type = DEVLINK_PARAM_TYPE_STRING;
3341 *param_type = DEVLINK_PARAM_TYPE_BOOL;
3351 devlink_param_value_get_from_info(const struct devlink_param *param,
3352 struct genl_info *info,
3353 union devlink_param_value *value)
3355 struct nlattr *param_data;
3358 param_data = info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA];
3360 if (param->type != DEVLINK_PARAM_TYPE_BOOL && !param_data)
3363 switch (param->type) {
3364 case DEVLINK_PARAM_TYPE_U8:
3365 if (nla_len(param_data) != sizeof(u8))
3367 value->vu8 = nla_get_u8(param_data);
3369 case DEVLINK_PARAM_TYPE_U16:
3370 if (nla_len(param_data) != sizeof(u16))
3372 value->vu16 = nla_get_u16(param_data);
3374 case DEVLINK_PARAM_TYPE_U32:
3375 if (nla_len(param_data) != sizeof(u32))
3377 value->vu32 = nla_get_u32(param_data);
3379 case DEVLINK_PARAM_TYPE_STRING:
3380 len = strnlen(nla_data(param_data), nla_len(param_data));
3381 if (len == nla_len(param_data) ||
3382 len >= __DEVLINK_PARAM_MAX_STRING_VALUE)
3384 strcpy(value->vstr, nla_data(param_data));
3386 case DEVLINK_PARAM_TYPE_BOOL:
3387 if (param_data && nla_len(param_data))
3389 value->vbool = nla_get_flag(param_data);
3395 static struct devlink_param_item *
3396 devlink_param_get_from_info(struct list_head *param_list,
3397 struct genl_info *info)
3401 if (!info->attrs[DEVLINK_ATTR_PARAM_NAME])
3404 param_name = nla_data(info->attrs[DEVLINK_ATTR_PARAM_NAME]);
3405 return devlink_param_find_by_name(param_list, param_name);
3408 static int devlink_nl_cmd_param_get_doit(struct sk_buff *skb,
3409 struct genl_info *info)
3411 struct devlink *devlink = info->user_ptr[0];
3412 struct devlink_param_item *param_item;
3413 struct sk_buff *msg;
3416 param_item = devlink_param_get_from_info(&devlink->param_list, info);
3420 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3424 err = devlink_nl_param_fill(msg, devlink, 0, param_item,
3425 DEVLINK_CMD_PARAM_GET,
3426 info->snd_portid, info->snd_seq, 0);
3432 return genlmsg_reply(msg, info);
3435 static int __devlink_nl_cmd_param_set_doit(struct devlink *devlink,
3436 unsigned int port_index,
3437 struct list_head *param_list,
3438 struct genl_info *info,
3439 enum devlink_command cmd)
3441 enum devlink_param_type param_type;
3442 struct devlink_param_gset_ctx ctx;
3443 enum devlink_param_cmode cmode;
3444 struct devlink_param_item *param_item;
3445 const struct devlink_param *param;
3446 union devlink_param_value value;
3449 param_item = devlink_param_get_from_info(param_list, info);
3452 param = param_item->param;
3453 err = devlink_param_type_get_from_info(info, ¶m_type);
3456 if (param_type != param->type)
3458 err = devlink_param_value_get_from_info(param, info, &value);
3461 if (param->validate) {
3462 err = param->validate(devlink, param->id, value, info->extack);
3467 if (!info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE])
3469 cmode = nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE]);
3470 if (!devlink_param_cmode_is_supported(param, cmode))
3473 if (cmode == DEVLINK_PARAM_CMODE_DRIVERINIT) {
3474 if (param->type == DEVLINK_PARAM_TYPE_STRING)
3475 strcpy(param_item->driverinit_value.vstr, value.vstr);
3477 param_item->driverinit_value = value;
3478 param_item->driverinit_value_valid = true;
3484 err = devlink_param_set(devlink, param, &ctx);
3489 devlink_param_notify(devlink, port_index, param_item, cmd);
3493 static int devlink_nl_cmd_param_set_doit(struct sk_buff *skb,
3494 struct genl_info *info)
3496 struct devlink *devlink = info->user_ptr[0];
3498 return __devlink_nl_cmd_param_set_doit(devlink, 0, &devlink->param_list,
3499 info, DEVLINK_CMD_PARAM_NEW);
3502 static int devlink_param_register_one(struct devlink *devlink,
3503 unsigned int port_index,
3504 struct list_head *param_list,
3505 const struct devlink_param *param,
3506 enum devlink_command cmd)
3508 struct devlink_param_item *param_item;
3510 if (devlink_param_find_by_name(param_list, param->name))
3513 if (param->supported_cmodes == BIT(DEVLINK_PARAM_CMODE_DRIVERINIT))
3514 WARN_ON(param->get || param->set);
3516 WARN_ON(!param->get || !param->set);
3518 param_item = kzalloc(sizeof(*param_item), GFP_KERNEL);
3521 param_item->param = param;
3523 list_add_tail(¶m_item->list, param_list);
3524 devlink_param_notify(devlink, port_index, param_item, cmd);
3528 static void devlink_param_unregister_one(struct devlink *devlink,
3529 unsigned int port_index,
3530 struct list_head *param_list,
3531 const struct devlink_param *param,
3532 enum devlink_command cmd)
3534 struct devlink_param_item *param_item;
3536 param_item = devlink_param_find_by_name(param_list, param->name);
3537 WARN_ON(!param_item);
3538 devlink_param_notify(devlink, port_index, param_item, cmd);
3539 list_del(¶m_item->list);
3543 static int devlink_nl_cmd_port_param_get_dumpit(struct sk_buff *msg,
3544 struct netlink_callback *cb)
3546 struct devlink_param_item *param_item;
3547 struct devlink_port *devlink_port;
3548 struct devlink *devlink;
3549 int start = cb->args[0];
3553 mutex_lock(&devlink_mutex);
3554 list_for_each_entry(devlink, &devlink_list, list) {
3555 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
3557 mutex_lock(&devlink->lock);
3558 list_for_each_entry(devlink_port, &devlink->port_list, list) {
3559 list_for_each_entry(param_item,
3560 &devlink_port->param_list, list) {
3565 err = devlink_nl_param_fill(msg,
3566 devlink_port->devlink,
3567 devlink_port->index, param_item,
3568 DEVLINK_CMD_PORT_PARAM_GET,
3569 NETLINK_CB(cb->skb).portid,
3572 if (err && err != -EOPNOTSUPP) {
3573 mutex_unlock(&devlink->lock);
3579 mutex_unlock(&devlink->lock);
3582 mutex_unlock(&devlink_mutex);
3584 if (err != -EMSGSIZE)
3591 static int devlink_nl_cmd_port_param_get_doit(struct sk_buff *skb,
3592 struct genl_info *info)
3594 struct devlink_port *devlink_port = info->user_ptr[0];
3595 struct devlink_param_item *param_item;
3596 struct sk_buff *msg;
3599 param_item = devlink_param_get_from_info(&devlink_port->param_list,
3604 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3608 err = devlink_nl_param_fill(msg, devlink_port->devlink,
3609 devlink_port->index, param_item,
3610 DEVLINK_CMD_PORT_PARAM_GET,
3611 info->snd_portid, info->snd_seq, 0);
3617 return genlmsg_reply(msg, info);
3620 static int devlink_nl_cmd_port_param_set_doit(struct sk_buff *skb,
3621 struct genl_info *info)
3623 struct devlink_port *devlink_port = info->user_ptr[0];
3625 return __devlink_nl_cmd_param_set_doit(devlink_port->devlink,
3626 devlink_port->index,
3627 &devlink_port->param_list, info,
3628 DEVLINK_CMD_PORT_PARAM_NEW);
3631 static int devlink_nl_region_snapshot_id_put(struct sk_buff *msg,
3632 struct devlink *devlink,
3633 struct devlink_snapshot *snapshot)
3635 struct nlattr *snap_attr;
3638 snap_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_SNAPSHOT);
3642 err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID, snapshot->id);
3644 goto nla_put_failure;
3646 nla_nest_end(msg, snap_attr);
3650 nla_nest_cancel(msg, snap_attr);
3654 static int devlink_nl_region_snapshots_id_put(struct sk_buff *msg,
3655 struct devlink *devlink,
3656 struct devlink_region *region)
3658 struct devlink_snapshot *snapshot;
3659 struct nlattr *snapshots_attr;
3662 snapshots_attr = nla_nest_start_noflag(msg,
3663 DEVLINK_ATTR_REGION_SNAPSHOTS);
3664 if (!snapshots_attr)
3667 list_for_each_entry(snapshot, ®ion->snapshot_list, list) {
3668 err = devlink_nl_region_snapshot_id_put(msg, devlink, snapshot);
3670 goto nla_put_failure;
3673 nla_nest_end(msg, snapshots_attr);
3677 nla_nest_cancel(msg, snapshots_attr);
3681 static int devlink_nl_region_fill(struct sk_buff *msg, struct devlink *devlink,
3682 enum devlink_command cmd, u32 portid,
3684 struct devlink_region *region)
3689 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
3693 err = devlink_nl_put_handle(msg, devlink);
3695 goto nla_put_failure;
3697 err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME, region->ops->name);
3699 goto nla_put_failure;
3701 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
3705 goto nla_put_failure;
3707 err = devlink_nl_region_snapshots_id_put(msg, devlink, region);
3709 goto nla_put_failure;
3711 genlmsg_end(msg, hdr);
3715 genlmsg_cancel(msg, hdr);
3719 static struct sk_buff *
3720 devlink_nl_region_notify_build(struct devlink_region *region,
3721 struct devlink_snapshot *snapshot,
3722 enum devlink_command cmd, u32 portid, u32 seq)
3724 struct devlink *devlink = region->devlink;
3725 struct sk_buff *msg;
3730 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3732 return ERR_PTR(-ENOMEM);
3734 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, 0, cmd);
3740 err = devlink_nl_put_handle(msg, devlink);
3742 goto out_cancel_msg;
3744 err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME,
3747 goto out_cancel_msg;
3750 err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID,
3753 goto out_cancel_msg;
3755 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
3756 region->size, DEVLINK_ATTR_PAD);
3758 goto out_cancel_msg;
3760 genlmsg_end(msg, hdr);
3765 genlmsg_cancel(msg, hdr);
3768 return ERR_PTR(err);
3771 static void devlink_nl_region_notify(struct devlink_region *region,
3772 struct devlink_snapshot *snapshot,
3773 enum devlink_command cmd)
3775 struct devlink *devlink = region->devlink;
3776 struct sk_buff *msg;
3778 WARN_ON(cmd != DEVLINK_CMD_REGION_NEW && cmd != DEVLINK_CMD_REGION_DEL);
3780 msg = devlink_nl_region_notify_build(region, snapshot, cmd, 0, 0);
3784 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
3785 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
3789 * __devlink_snapshot_id_increment - Increment number of snapshots using an id
3790 * @devlink: devlink instance
3791 * @id: the snapshot id
3793 * Track when a new snapshot begins using an id. Load the count for the
3794 * given id from the snapshot xarray, increment it, and store it back.
3796 * Called when a new snapshot is created with the given id.
3798 * The id *must* have been previously allocated by
3799 * devlink_region_snapshot_id_get().
3801 * Returns 0 on success, or an error on failure.
3803 static int __devlink_snapshot_id_increment(struct devlink *devlink, u32 id)
3805 unsigned long count;
3808 lockdep_assert_held(&devlink->lock);
3810 p = xa_load(&devlink->snapshot_ids, id);
3814 if (WARN_ON(!xa_is_value(p)))
3817 count = xa_to_value(p);
3820 return xa_err(xa_store(&devlink->snapshot_ids, id, xa_mk_value(count),
3825 * __devlink_snapshot_id_decrement - Decrease number of snapshots using an id
3826 * @devlink: devlink instance
3827 * @id: the snapshot id
3829 * Track when a snapshot is deleted and stops using an id. Load the count
3830 * for the given id from the snapshot xarray, decrement it, and store it
3833 * If the count reaches zero, erase this id from the xarray, freeing it
3834 * up for future re-use by devlink_region_snapshot_id_get().
3836 * Called when a snapshot using the given id is deleted, and when the
3837 * initial allocator of the id is finished using it.
3839 static void __devlink_snapshot_id_decrement(struct devlink *devlink, u32 id)
3841 unsigned long count;
3844 lockdep_assert_held(&devlink->lock);
3846 p = xa_load(&devlink->snapshot_ids, id);
3850 if (WARN_ON(!xa_is_value(p)))
3853 count = xa_to_value(p);
3857 xa_store(&devlink->snapshot_ids, id, xa_mk_value(count),
3860 /* If this was the last user, we can erase this id */
3861 xa_erase(&devlink->snapshot_ids, id);
3866 * __devlink_snapshot_id_insert - Insert a specific snapshot ID
3867 * @devlink: devlink instance
3868 * @id: the snapshot id
3870 * Mark the given snapshot id as used by inserting a zero value into the
3873 * This must be called while holding the devlink instance lock. Unlike
3874 * devlink_snapshot_id_get, the initial reference count is zero, not one.
3875 * It is expected that the id will immediately be used before
3876 * releasing the devlink instance lock.
3878 * Returns zero on success, or an error code if the snapshot id could not
3881 static int __devlink_snapshot_id_insert(struct devlink *devlink, u32 id)
3883 lockdep_assert_held(&devlink->lock);
3885 if (WARN_ON(xa_load(&devlink->snapshot_ids, id)))
3888 return xa_err(xa_store(&devlink->snapshot_ids, id, xa_mk_value(0),
3893 * __devlink_region_snapshot_id_get - get snapshot ID
3894 * @devlink: devlink instance
3895 * @id: storage to return snapshot id
3897 * Allocates a new snapshot id. Returns zero on success, or a negative
3898 * error on failure. Must be called while holding the devlink instance
3901 * Snapshot IDs are tracked using an xarray which stores the number of
3902 * users of the snapshot id.
3904 * Note that the caller of this function counts as a 'user', in order to
3905 * avoid race conditions. The caller must release its hold on the
3906 * snapshot by using devlink_region_snapshot_id_put.
3908 static int __devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id)
3910 lockdep_assert_held(&devlink->lock);
3912 return xa_alloc(&devlink->snapshot_ids, id, xa_mk_value(1),
3913 xa_limit_32b, GFP_KERNEL);
3917 * __devlink_region_snapshot_create - create a new snapshot
3918 * This will add a new snapshot of a region. The snapshot
3919 * will be stored on the region struct and can be accessed
3920 * from devlink. This is useful for future analyses of snapshots.
3921 * Multiple snapshots can be created on a region.
3922 * The @snapshot_id should be obtained using the getter function.
3924 * Must be called only while holding the devlink instance lock.
3926 * @region: devlink region of the snapshot
3927 * @data: snapshot data
3928 * @snapshot_id: snapshot id to be created
3931 __devlink_region_snapshot_create(struct devlink_region *region,
3932 u8 *data, u32 snapshot_id)
3934 struct devlink *devlink = region->devlink;
3935 struct devlink_snapshot *snapshot;
3938 lockdep_assert_held(&devlink->lock);
3940 /* check if region can hold one more snapshot */
3941 if (region->cur_snapshots == region->max_snapshots)
3944 if (devlink_region_snapshot_get_by_id(region, snapshot_id))
3947 snapshot = kzalloc(sizeof(*snapshot), GFP_KERNEL);
3951 err = __devlink_snapshot_id_increment(devlink, snapshot_id);
3953 goto err_snapshot_id_increment;
3955 snapshot->id = snapshot_id;
3956 snapshot->region = region;
3957 snapshot->data = data;
3959 list_add_tail(&snapshot->list, ®ion->snapshot_list);
3961 region->cur_snapshots++;
3963 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_NEW);
3966 err_snapshot_id_increment:
3971 static void devlink_region_snapshot_del(struct devlink_region *region,
3972 struct devlink_snapshot *snapshot)
3974 struct devlink *devlink = region->devlink;
3976 lockdep_assert_held(&devlink->lock);
3978 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_DEL);
3979 region->cur_snapshots--;
3980 list_del(&snapshot->list);
3981 region->ops->destructor(snapshot->data);
3982 __devlink_snapshot_id_decrement(devlink, snapshot->id);
3986 static int devlink_nl_cmd_region_get_doit(struct sk_buff *skb,
3987 struct genl_info *info)
3989 struct devlink *devlink = info->user_ptr[0];
3990 struct devlink_region *region;
3991 const char *region_name;
3992 struct sk_buff *msg;
3995 if (!info->attrs[DEVLINK_ATTR_REGION_NAME])
3998 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
3999 region = devlink_region_get_by_name(devlink, region_name);
4003 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4007 err = devlink_nl_region_fill(msg, devlink, DEVLINK_CMD_REGION_GET,
4008 info->snd_portid, info->snd_seq, 0,
4015 return genlmsg_reply(msg, info);
4018 static int devlink_nl_cmd_region_get_dumpit(struct sk_buff *msg,
4019 struct netlink_callback *cb)
4021 struct devlink_region *region;
4022 struct devlink *devlink;
4023 int start = cb->args[0];
4027 mutex_lock(&devlink_mutex);
4028 list_for_each_entry(devlink, &devlink_list, list) {
4029 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
4032 mutex_lock(&devlink->lock);
4033 list_for_each_entry(region, &devlink->region_list, list) {
4038 err = devlink_nl_region_fill(msg, devlink,
4039 DEVLINK_CMD_REGION_GET,
4040 NETLINK_CB(cb->skb).portid,
4042 NLM_F_MULTI, region);
4044 mutex_unlock(&devlink->lock);
4049 mutex_unlock(&devlink->lock);
4052 mutex_unlock(&devlink_mutex);
4057 static int devlink_nl_cmd_region_del(struct sk_buff *skb,
4058 struct genl_info *info)
4060 struct devlink *devlink = info->user_ptr[0];
4061 struct devlink_snapshot *snapshot;
4062 struct devlink_region *region;
4063 const char *region_name;
4066 if (!info->attrs[DEVLINK_ATTR_REGION_NAME] ||
4067 !info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID])
4070 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
4071 snapshot_id = nla_get_u32(info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
4073 region = devlink_region_get_by_name(devlink, region_name);
4077 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
4081 devlink_region_snapshot_del(region, snapshot);
4086 devlink_nl_cmd_region_new(struct sk_buff *skb, struct genl_info *info)
4088 struct devlink *devlink = info->user_ptr[0];
4089 struct devlink_snapshot *snapshot;
4090 struct nlattr *snapshot_id_attr;
4091 struct devlink_region *region;
4092 const char *region_name;
4097 if (!info->attrs[DEVLINK_ATTR_REGION_NAME]) {
4098 NL_SET_ERR_MSG_MOD(info->extack, "No region name provided");
4102 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
4103 region = devlink_region_get_by_name(devlink, region_name);
4105 NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not exist");
4109 if (!region->ops->snapshot) {
4110 NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not support taking an immediate snapshot");
4114 if (region->cur_snapshots == region->max_snapshots) {
4115 NL_SET_ERR_MSG_MOD(info->extack, "The region has reached the maximum number of stored snapshots");
4119 snapshot_id_attr = info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID];
4120 if (snapshot_id_attr) {
4121 snapshot_id = nla_get_u32(snapshot_id_attr);
4123 if (devlink_region_snapshot_get_by_id(region, snapshot_id)) {
4124 NL_SET_ERR_MSG_MOD(info->extack, "The requested snapshot id is already in use");
4128 err = __devlink_snapshot_id_insert(devlink, snapshot_id);
4132 err = __devlink_region_snapshot_id_get(devlink, &snapshot_id);
4134 NL_SET_ERR_MSG_MOD(info->extack, "Failed to allocate a new snapshot id");
4139 err = region->ops->snapshot(devlink, info->extack, &data);
4141 goto err_snapshot_capture;
4143 err = __devlink_region_snapshot_create(region, data, snapshot_id);
4145 goto err_snapshot_create;
4147 if (!snapshot_id_attr) {
4148 struct sk_buff *msg;
4150 snapshot = devlink_region_snapshot_get_by_id(region,
4152 if (WARN_ON(!snapshot))
4155 msg = devlink_nl_region_notify_build(region, snapshot,
4156 DEVLINK_CMD_REGION_NEW,
4159 err = PTR_ERR_OR_ZERO(msg);
4163 err = genlmsg_reply(msg, info);
4170 err_snapshot_create:
4171 region->ops->destructor(data);
4172 err_snapshot_capture:
4173 __devlink_snapshot_id_decrement(devlink, snapshot_id);
4177 devlink_region_snapshot_del(region, snapshot);
4181 static int devlink_nl_cmd_region_read_chunk_fill(struct sk_buff *msg,
4182 struct devlink *devlink,
4183 u8 *chunk, u32 chunk_size,
4186 struct nlattr *chunk_attr;
4189 chunk_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_CHUNK);
4193 err = nla_put(msg, DEVLINK_ATTR_REGION_CHUNK_DATA, chunk_size, chunk);
4195 goto nla_put_failure;
4197 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_CHUNK_ADDR, addr,
4200 goto nla_put_failure;
4202 nla_nest_end(msg, chunk_attr);
4206 nla_nest_cancel(msg, chunk_attr);
4210 #define DEVLINK_REGION_READ_CHUNK_SIZE 256
4212 static int devlink_nl_region_read_snapshot_fill(struct sk_buff *skb,
4213 struct devlink *devlink,
4214 struct devlink_region *region,
4215 struct nlattr **attrs,
4220 struct devlink_snapshot *snapshot;
4221 u64 curr_offset = start_offset;
4225 *new_offset = start_offset;
4227 snapshot_id = nla_get_u32(attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
4228 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
4232 while (curr_offset < end_offset) {
4236 if (end_offset - curr_offset < DEVLINK_REGION_READ_CHUNK_SIZE)
4237 data_size = end_offset - curr_offset;
4239 data_size = DEVLINK_REGION_READ_CHUNK_SIZE;
4241 data = &snapshot->data[curr_offset];
4242 err = devlink_nl_cmd_region_read_chunk_fill(skb, devlink,
4248 curr_offset += data_size;
4250 *new_offset = curr_offset;
4255 static int devlink_nl_cmd_region_read_dumpit(struct sk_buff *skb,
4256 struct netlink_callback *cb)
4258 const struct genl_dumpit_info *info = genl_dumpit_info(cb);
4259 u64 ret_offset, start_offset, end_offset = U64_MAX;
4260 struct nlattr **attrs = info->attrs;
4261 struct devlink_region *region;
4262 struct nlattr *chunks_attr;
4263 const char *region_name;
4264 struct devlink *devlink;
4268 start_offset = *((u64 *)&cb->args[0]);
4270 mutex_lock(&devlink_mutex);
4271 devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
4272 if (IS_ERR(devlink)) {
4273 err = PTR_ERR(devlink);
4277 mutex_lock(&devlink->lock);
4279 if (!attrs[DEVLINK_ATTR_REGION_NAME] ||
4280 !attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]) {
4285 region_name = nla_data(attrs[DEVLINK_ATTR_REGION_NAME]);
4286 region = devlink_region_get_by_name(devlink, region_name);
4292 if (attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR] &&
4293 attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]) {
4296 nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
4298 end_offset = nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
4299 end_offset += nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]);
4302 if (end_offset > region->size)
4303 end_offset = region->size;
4305 /* return 0 if there is no further data to read */
4306 if (start_offset == end_offset) {
4311 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
4312 &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI,
4313 DEVLINK_CMD_REGION_READ);
4319 err = devlink_nl_put_handle(skb, devlink);
4321 goto nla_put_failure;
4323 err = nla_put_string(skb, DEVLINK_ATTR_REGION_NAME, region_name);
4325 goto nla_put_failure;
4327 chunks_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_REGION_CHUNKS);
4330 goto nla_put_failure;
4333 err = devlink_nl_region_read_snapshot_fill(skb, devlink,
4336 end_offset, &ret_offset);
4338 if (err && err != -EMSGSIZE)
4339 goto nla_put_failure;
4341 /* Check if there was any progress done to prevent infinite loop */
4342 if (ret_offset == start_offset) {
4344 goto nla_put_failure;
4347 *((u64 *)&cb->args[0]) = ret_offset;
4349 nla_nest_end(skb, chunks_attr);
4350 genlmsg_end(skb, hdr);
4351 mutex_unlock(&devlink->lock);
4352 mutex_unlock(&devlink_mutex);
4357 genlmsg_cancel(skb, hdr);
4359 mutex_unlock(&devlink->lock);
4361 mutex_unlock(&devlink_mutex);
4365 struct devlink_info_req {
4366 struct sk_buff *msg;
4369 int devlink_info_driver_name_put(struct devlink_info_req *req, const char *name)
4371 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_DRIVER_NAME, name);
4373 EXPORT_SYMBOL_GPL(devlink_info_driver_name_put);
4375 int devlink_info_serial_number_put(struct devlink_info_req *req, const char *sn)
4377 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_SERIAL_NUMBER, sn);
4379 EXPORT_SYMBOL_GPL(devlink_info_serial_number_put);
4381 static int devlink_info_version_put(struct devlink_info_req *req, int attr,
4382 const char *version_name,
4383 const char *version_value)
4385 struct nlattr *nest;
4388 nest = nla_nest_start_noflag(req->msg, attr);
4392 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_NAME,
4395 goto nla_put_failure;
4397 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_VALUE,
4400 goto nla_put_failure;
4402 nla_nest_end(req->msg, nest);
4407 nla_nest_cancel(req->msg, nest);
4411 int devlink_info_version_fixed_put(struct devlink_info_req *req,
4412 const char *version_name,
4413 const char *version_value)
4415 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_FIXED,
4416 version_name, version_value);
4418 EXPORT_SYMBOL_GPL(devlink_info_version_fixed_put);
4420 int devlink_info_version_stored_put(struct devlink_info_req *req,
4421 const char *version_name,
4422 const char *version_value)
4424 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_STORED,
4425 version_name, version_value);
4427 EXPORT_SYMBOL_GPL(devlink_info_version_stored_put);
4429 int devlink_info_version_running_put(struct devlink_info_req *req,
4430 const char *version_name,
4431 const char *version_value)
4433 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_RUNNING,
4434 version_name, version_value);
4436 EXPORT_SYMBOL_GPL(devlink_info_version_running_put);
4439 devlink_nl_info_fill(struct sk_buff *msg, struct devlink *devlink,
4440 enum devlink_command cmd, u32 portid,
4441 u32 seq, int flags, struct netlink_ext_ack *extack)
4443 struct devlink_info_req req;
4447 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
4452 if (devlink_nl_put_handle(msg, devlink))
4453 goto err_cancel_msg;
4456 err = devlink->ops->info_get(devlink, &req, extack);
4458 goto err_cancel_msg;
4460 genlmsg_end(msg, hdr);
4464 genlmsg_cancel(msg, hdr);
4468 static int devlink_nl_cmd_info_get_doit(struct sk_buff *skb,
4469 struct genl_info *info)
4471 struct devlink *devlink = info->user_ptr[0];
4472 struct sk_buff *msg;
4475 if (!devlink->ops->info_get)
4478 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4482 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
4483 info->snd_portid, info->snd_seq, 0,
4490 return genlmsg_reply(msg, info);
4493 static int devlink_nl_cmd_info_get_dumpit(struct sk_buff *msg,
4494 struct netlink_callback *cb)
4496 struct devlink *devlink;
4497 int start = cb->args[0];
4501 mutex_lock(&devlink_mutex);
4502 list_for_each_entry(devlink, &devlink_list, list) {
4503 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
4510 if (!devlink->ops->info_get) {
4515 mutex_lock(&devlink->lock);
4516 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
4517 NETLINK_CB(cb->skb).portid,
4518 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4520 mutex_unlock(&devlink->lock);
4521 if (err && err != -EOPNOTSUPP)
4525 mutex_unlock(&devlink_mutex);
4527 if (err != -EMSGSIZE)
4534 struct devlink_fmsg_item {
4535 struct list_head list;
4542 struct devlink_fmsg {
4543 struct list_head item_list;
4544 bool putting_binary; /* This flag forces enclosing of binary data
4545 * in an array brackets. It forces using
4546 * of designated API:
4547 * devlink_fmsg_binary_pair_nest_start()
4548 * devlink_fmsg_binary_pair_nest_end()
4552 static struct devlink_fmsg *devlink_fmsg_alloc(void)
4554 struct devlink_fmsg *fmsg;
4556 fmsg = kzalloc(sizeof(*fmsg), GFP_KERNEL);
4560 INIT_LIST_HEAD(&fmsg->item_list);
4565 static void devlink_fmsg_free(struct devlink_fmsg *fmsg)
4567 struct devlink_fmsg_item *item, *tmp;
4569 list_for_each_entry_safe(item, tmp, &fmsg->item_list, list) {
4570 list_del(&item->list);
4576 static int devlink_fmsg_nest_common(struct devlink_fmsg *fmsg,
4579 struct devlink_fmsg_item *item;
4581 item = kzalloc(sizeof(*item), GFP_KERNEL);
4585 item->attrtype = attrtype;
4586 list_add_tail(&item->list, &fmsg->item_list);
4591 int devlink_fmsg_obj_nest_start(struct devlink_fmsg *fmsg)
4593 if (fmsg->putting_binary)
4596 return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_OBJ_NEST_START);
4598 EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_start);
4600 static int devlink_fmsg_nest_end(struct devlink_fmsg *fmsg)
4602 if (fmsg->putting_binary)
4605 return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_NEST_END);
4608 int devlink_fmsg_obj_nest_end(struct devlink_fmsg *fmsg)
4610 if (fmsg->putting_binary)
4613 return devlink_fmsg_nest_end(fmsg);
4615 EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_end);
4617 #define DEVLINK_FMSG_MAX_SIZE (GENLMSG_DEFAULT_SIZE - GENL_HDRLEN - NLA_HDRLEN)
4619 static int devlink_fmsg_put_name(struct devlink_fmsg *fmsg, const char *name)
4621 struct devlink_fmsg_item *item;
4623 if (fmsg->putting_binary)
4626 if (strlen(name) + 1 > DEVLINK_FMSG_MAX_SIZE)
4629 item = kzalloc(sizeof(*item) + strlen(name) + 1, GFP_KERNEL);
4633 item->nla_type = NLA_NUL_STRING;
4634 item->len = strlen(name) + 1;
4635 item->attrtype = DEVLINK_ATTR_FMSG_OBJ_NAME;
4636 memcpy(&item->value, name, item->len);
4637 list_add_tail(&item->list, &fmsg->item_list);
4642 int devlink_fmsg_pair_nest_start(struct devlink_fmsg *fmsg, const char *name)
4646 if (fmsg->putting_binary)
4649 err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_PAIR_NEST_START);
4653 err = devlink_fmsg_put_name(fmsg, name);
4659 EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_start);
4661 int devlink_fmsg_pair_nest_end(struct devlink_fmsg *fmsg)
4663 if (fmsg->putting_binary)
4666 return devlink_fmsg_nest_end(fmsg);
4668 EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_end);
4670 int devlink_fmsg_arr_pair_nest_start(struct devlink_fmsg *fmsg,
4675 if (fmsg->putting_binary)
4678 err = devlink_fmsg_pair_nest_start(fmsg, name);
4682 err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_ARR_NEST_START);
4688 EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_start);
4690 int devlink_fmsg_arr_pair_nest_end(struct devlink_fmsg *fmsg)
4694 if (fmsg->putting_binary)
4697 err = devlink_fmsg_nest_end(fmsg);
4701 err = devlink_fmsg_nest_end(fmsg);
4707 EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_end);
4709 int devlink_fmsg_binary_pair_nest_start(struct devlink_fmsg *fmsg,
4714 err = devlink_fmsg_arr_pair_nest_start(fmsg, name);
4718 fmsg->putting_binary = true;
4721 EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_start);
4723 int devlink_fmsg_binary_pair_nest_end(struct devlink_fmsg *fmsg)
4725 if (!fmsg->putting_binary)
4728 fmsg->putting_binary = false;
4729 return devlink_fmsg_arr_pair_nest_end(fmsg);
4731 EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_end);
4733 static int devlink_fmsg_put_value(struct devlink_fmsg *fmsg,
4734 const void *value, u16 value_len,
4737 struct devlink_fmsg_item *item;
4739 if (value_len > DEVLINK_FMSG_MAX_SIZE)
4742 item = kzalloc(sizeof(*item) + value_len, GFP_KERNEL);
4746 item->nla_type = value_nla_type;
4747 item->len = value_len;
4748 item->attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
4749 memcpy(&item->value, value, item->len);
4750 list_add_tail(&item->list, &fmsg->item_list);
4755 int devlink_fmsg_bool_put(struct devlink_fmsg *fmsg, bool value)
4757 if (fmsg->putting_binary)
4760 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_FLAG);
4762 EXPORT_SYMBOL_GPL(devlink_fmsg_bool_put);
4764 int devlink_fmsg_u8_put(struct devlink_fmsg *fmsg, u8 value)
4766 if (fmsg->putting_binary)
4769 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U8);
4771 EXPORT_SYMBOL_GPL(devlink_fmsg_u8_put);
4773 int devlink_fmsg_u32_put(struct devlink_fmsg *fmsg, u32 value)
4775 if (fmsg->putting_binary)
4778 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U32);
4780 EXPORT_SYMBOL_GPL(devlink_fmsg_u32_put);
4782 int devlink_fmsg_u64_put(struct devlink_fmsg *fmsg, u64 value)
4784 if (fmsg->putting_binary)
4787 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U64);
4789 EXPORT_SYMBOL_GPL(devlink_fmsg_u64_put);
4791 int devlink_fmsg_string_put(struct devlink_fmsg *fmsg, const char *value)
4793 if (fmsg->putting_binary)
4796 return devlink_fmsg_put_value(fmsg, value, strlen(value) + 1,
4799 EXPORT_SYMBOL_GPL(devlink_fmsg_string_put);
4801 int devlink_fmsg_binary_put(struct devlink_fmsg *fmsg, const void *value,
4804 if (!fmsg->putting_binary)
4807 return devlink_fmsg_put_value(fmsg, value, value_len, NLA_BINARY);
4809 EXPORT_SYMBOL_GPL(devlink_fmsg_binary_put);
4811 int devlink_fmsg_bool_pair_put(struct devlink_fmsg *fmsg, const char *name,
4816 err = devlink_fmsg_pair_nest_start(fmsg, name);
4820 err = devlink_fmsg_bool_put(fmsg, value);
4824 err = devlink_fmsg_pair_nest_end(fmsg);
4830 EXPORT_SYMBOL_GPL(devlink_fmsg_bool_pair_put);
4832 int devlink_fmsg_u8_pair_put(struct devlink_fmsg *fmsg, const char *name,
4837 err = devlink_fmsg_pair_nest_start(fmsg, name);
4841 err = devlink_fmsg_u8_put(fmsg, value);
4845 err = devlink_fmsg_pair_nest_end(fmsg);
4851 EXPORT_SYMBOL_GPL(devlink_fmsg_u8_pair_put);
4853 int devlink_fmsg_u32_pair_put(struct devlink_fmsg *fmsg, const char *name,
4858 err = devlink_fmsg_pair_nest_start(fmsg, name);
4862 err = devlink_fmsg_u32_put(fmsg, value);
4866 err = devlink_fmsg_pair_nest_end(fmsg);
4872 EXPORT_SYMBOL_GPL(devlink_fmsg_u32_pair_put);
4874 int devlink_fmsg_u64_pair_put(struct devlink_fmsg *fmsg, const char *name,
4879 err = devlink_fmsg_pair_nest_start(fmsg, name);
4883 err = devlink_fmsg_u64_put(fmsg, value);
4887 err = devlink_fmsg_pair_nest_end(fmsg);
4893 EXPORT_SYMBOL_GPL(devlink_fmsg_u64_pair_put);
4895 int devlink_fmsg_string_pair_put(struct devlink_fmsg *fmsg, const char *name,
4900 err = devlink_fmsg_pair_nest_start(fmsg, name);
4904 err = devlink_fmsg_string_put(fmsg, value);
4908 err = devlink_fmsg_pair_nest_end(fmsg);
4914 EXPORT_SYMBOL_GPL(devlink_fmsg_string_pair_put);
4916 int devlink_fmsg_binary_pair_put(struct devlink_fmsg *fmsg, const char *name,
4917 const void *value, u32 value_len)
4924 err = devlink_fmsg_binary_pair_nest_start(fmsg, name);
4928 for (offset = 0; offset < value_len; offset += data_size) {
4929 data_size = value_len - offset;
4930 if (data_size > DEVLINK_FMSG_MAX_SIZE)
4931 data_size = DEVLINK_FMSG_MAX_SIZE;
4932 err = devlink_fmsg_binary_put(fmsg, value + offset, data_size);
4935 /* Exit from loop with a break (instead of
4936 * return) to make sure putting_binary is turned off in
4937 * devlink_fmsg_binary_pair_nest_end
4941 end_err = devlink_fmsg_binary_pair_nest_end(fmsg);
4947 EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_put);
4950 devlink_fmsg_item_fill_type(struct devlink_fmsg_item *msg, struct sk_buff *skb)
4952 switch (msg->nla_type) {
4957 case NLA_NUL_STRING:
4959 return nla_put_u8(skb, DEVLINK_ATTR_FMSG_OBJ_VALUE_TYPE,
4967 devlink_fmsg_item_fill_data(struct devlink_fmsg_item *msg, struct sk_buff *skb)
4969 int attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
4972 switch (msg->nla_type) {
4974 /* Always provide flag data, regardless of its value */
4975 tmp = *(bool *) msg->value;
4977 return nla_put_u8(skb, attrtype, tmp);
4979 return nla_put_u8(skb, attrtype, *(u8 *) msg->value);
4981 return nla_put_u32(skb, attrtype, *(u32 *) msg->value);
4983 return nla_put_u64_64bit(skb, attrtype, *(u64 *) msg->value,
4985 case NLA_NUL_STRING:
4986 return nla_put_string(skb, attrtype, (char *) &msg->value);
4988 return nla_put(skb, attrtype, msg->len, (void *) &msg->value);
4995 devlink_fmsg_prepare_skb(struct devlink_fmsg *fmsg, struct sk_buff *skb,
4998 struct devlink_fmsg_item *item;
4999 struct nlattr *fmsg_nlattr;
5003 fmsg_nlattr = nla_nest_start_noflag(skb, DEVLINK_ATTR_FMSG);
5007 list_for_each_entry(item, &fmsg->item_list, list) {
5013 switch (item->attrtype) {
5014 case DEVLINK_ATTR_FMSG_OBJ_NEST_START:
5015 case DEVLINK_ATTR_FMSG_PAIR_NEST_START:
5016 case DEVLINK_ATTR_FMSG_ARR_NEST_START:
5017 case DEVLINK_ATTR_FMSG_NEST_END:
5018 err = nla_put_flag(skb, item->attrtype);
5020 case DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA:
5021 err = devlink_fmsg_item_fill_type(item, skb);
5024 err = devlink_fmsg_item_fill_data(item, skb);
5026 case DEVLINK_ATTR_FMSG_OBJ_NAME:
5027 err = nla_put_string(skb, item->attrtype,
5028 (char *) &item->value);
5040 nla_nest_end(skb, fmsg_nlattr);
5044 static int devlink_fmsg_snd(struct devlink_fmsg *fmsg,
5045 struct genl_info *info,
5046 enum devlink_command cmd, int flags)
5048 struct nlmsghdr *nlh;
5049 struct sk_buff *skb;
5056 int tmp_index = index;
5058 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
5062 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
5063 &devlink_nl_family, flags | NLM_F_MULTI, cmd);
5066 goto nla_put_failure;
5069 err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
5072 else if (err != -EMSGSIZE || tmp_index == index)
5073 goto nla_put_failure;
5075 genlmsg_end(skb, hdr);
5076 err = genlmsg_reply(skb, info);
5081 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
5084 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
5085 NLMSG_DONE, 0, flags | NLM_F_MULTI);
5088 goto nla_put_failure;
5091 return genlmsg_reply(skb, info);
5098 static int devlink_fmsg_dumpit(struct devlink_fmsg *fmsg, struct sk_buff *skb,
5099 struct netlink_callback *cb,
5100 enum devlink_command cmd)
5102 int index = cb->args[0];
5103 int tmp_index = index;
5107 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
5108 &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI, cmd);
5111 goto nla_put_failure;
5114 err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
5115 if ((err && err != -EMSGSIZE) || tmp_index == index)
5116 goto nla_put_failure;
5118 cb->args[0] = index;
5119 genlmsg_end(skb, hdr);
5123 genlmsg_cancel(skb, hdr);
5127 struct devlink_health_reporter {
5128 struct list_head list;
5130 const struct devlink_health_reporter_ops *ops;
5131 struct devlink *devlink;
5132 struct devlink_fmsg *dump_fmsg;
5133 struct mutex dump_lock; /* lock parallel read/write from dump buffers */
5134 u64 graceful_period;
5142 u64 last_recovery_ts;
5143 refcount_t refcount;
5147 devlink_health_reporter_priv(struct devlink_health_reporter *reporter)
5149 return reporter->priv;
5151 EXPORT_SYMBOL_GPL(devlink_health_reporter_priv);
5153 static struct devlink_health_reporter *
5154 devlink_health_reporter_find_by_name(struct devlink *devlink,
5155 const char *reporter_name)
5157 struct devlink_health_reporter *reporter;
5159 lockdep_assert_held(&devlink->reporters_lock);
5160 list_for_each_entry(reporter, &devlink->reporter_list, list)
5161 if (!strcmp(reporter->ops->name, reporter_name))
5167 * devlink_health_reporter_create - create devlink health reporter
5171 * @graceful_period: to avoid recovery loops, in msecs
5174 struct devlink_health_reporter *
5175 devlink_health_reporter_create(struct devlink *devlink,
5176 const struct devlink_health_reporter_ops *ops,
5177 u64 graceful_period, void *priv)
5179 struct devlink_health_reporter *reporter;
5181 mutex_lock(&devlink->reporters_lock);
5182 if (devlink_health_reporter_find_by_name(devlink, ops->name)) {
5183 reporter = ERR_PTR(-EEXIST);
5187 if (WARN_ON(graceful_period && !ops->recover)) {
5188 reporter = ERR_PTR(-EINVAL);
5192 reporter = kzalloc(sizeof(*reporter), GFP_KERNEL);
5194 reporter = ERR_PTR(-ENOMEM);
5198 reporter->priv = priv;
5199 reporter->ops = ops;
5200 reporter->devlink = devlink;
5201 reporter->graceful_period = graceful_period;
5202 reporter->auto_recover = !!ops->recover;
5203 reporter->auto_dump = !!ops->dump;
5204 mutex_init(&reporter->dump_lock);
5205 refcount_set(&reporter->refcount, 1);
5206 list_add_tail(&reporter->list, &devlink->reporter_list);
5208 mutex_unlock(&devlink->reporters_lock);
5211 EXPORT_SYMBOL_GPL(devlink_health_reporter_create);
5214 * devlink_health_reporter_destroy - destroy devlink health reporter
5216 * @reporter: devlink health reporter to destroy
5219 devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
5221 mutex_lock(&reporter->devlink->reporters_lock);
5222 list_del(&reporter->list);
5223 mutex_unlock(&reporter->devlink->reporters_lock);
5224 while (refcount_read(&reporter->refcount) > 1)
5226 mutex_destroy(&reporter->dump_lock);
5227 if (reporter->dump_fmsg)
5228 devlink_fmsg_free(reporter->dump_fmsg);
5231 EXPORT_SYMBOL_GPL(devlink_health_reporter_destroy);
5234 devlink_nl_health_reporter_fill(struct sk_buff *msg,
5235 struct devlink *devlink,
5236 struct devlink_health_reporter *reporter,
5237 enum devlink_command cmd, u32 portid,
5240 struct nlattr *reporter_attr;
5243 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
5247 if (devlink_nl_put_handle(msg, devlink))
5248 goto genlmsg_cancel;
5250 reporter_attr = nla_nest_start_noflag(msg,
5251 DEVLINK_ATTR_HEALTH_REPORTER);
5253 goto genlmsg_cancel;
5254 if (nla_put_string(msg, DEVLINK_ATTR_HEALTH_REPORTER_NAME,
5255 reporter->ops->name))
5256 goto reporter_nest_cancel;
5257 if (nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_STATE,
5258 reporter->health_state))
5259 goto reporter_nest_cancel;
5260 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_ERR_COUNT,
5261 reporter->error_count, DEVLINK_ATTR_PAD))
5262 goto reporter_nest_cancel;
5263 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_RECOVER_COUNT,
5264 reporter->recovery_count, DEVLINK_ATTR_PAD))
5265 goto reporter_nest_cancel;
5266 if (reporter->ops->recover &&
5267 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD,
5268 reporter->graceful_period,
5270 goto reporter_nest_cancel;
5271 if (reporter->ops->recover &&
5272 nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER,
5273 reporter->auto_recover))
5274 goto reporter_nest_cancel;
5275 if (reporter->dump_fmsg &&
5276 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS,
5277 jiffies_to_msecs(reporter->dump_ts),
5279 goto reporter_nest_cancel;
5280 if (reporter->dump_fmsg &&
5281 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS_NS,
5282 reporter->dump_real_ts, DEVLINK_ATTR_PAD))
5283 goto reporter_nest_cancel;
5284 if (reporter->ops->dump &&
5285 nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP,
5286 reporter->auto_dump))
5287 goto reporter_nest_cancel;
5289 nla_nest_end(msg, reporter_attr);
5290 genlmsg_end(msg, hdr);
5293 reporter_nest_cancel:
5294 nla_nest_end(msg, reporter_attr);
5296 genlmsg_cancel(msg, hdr);
5300 static void devlink_recover_notify(struct devlink_health_reporter *reporter,
5301 enum devlink_command cmd)
5303 struct sk_buff *msg;
5306 WARN_ON(cmd != DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
5308 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5312 err = devlink_nl_health_reporter_fill(msg, reporter->devlink,
5313 reporter, cmd, 0, 0, 0);
5319 genlmsg_multicast_netns(&devlink_nl_family,
5320 devlink_net(reporter->devlink),
5321 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
5325 devlink_health_reporter_recovery_done(struct devlink_health_reporter *reporter)
5327 reporter->recovery_count++;
5328 reporter->last_recovery_ts = jiffies;
5330 EXPORT_SYMBOL_GPL(devlink_health_reporter_recovery_done);
5333 devlink_health_reporter_recover(struct devlink_health_reporter *reporter,
5334 void *priv_ctx, struct netlink_ext_ack *extack)
5338 if (reporter->health_state == DEVLINK_HEALTH_REPORTER_STATE_HEALTHY)
5341 if (!reporter->ops->recover)
5344 err = reporter->ops->recover(reporter, priv_ctx, extack);
5348 devlink_health_reporter_recovery_done(reporter);
5349 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_HEALTHY;
5350 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
5356 devlink_health_dump_clear(struct devlink_health_reporter *reporter)
5358 if (!reporter->dump_fmsg)
5360 devlink_fmsg_free(reporter->dump_fmsg);
5361 reporter->dump_fmsg = NULL;
5364 static int devlink_health_do_dump(struct devlink_health_reporter *reporter,
5366 struct netlink_ext_ack *extack)
5370 if (!reporter->ops->dump)
5373 if (reporter->dump_fmsg)
5376 reporter->dump_fmsg = devlink_fmsg_alloc();
5377 if (!reporter->dump_fmsg) {
5382 err = devlink_fmsg_obj_nest_start(reporter->dump_fmsg);
5386 err = reporter->ops->dump(reporter, reporter->dump_fmsg,
5391 err = devlink_fmsg_obj_nest_end(reporter->dump_fmsg);
5395 reporter->dump_ts = jiffies;
5396 reporter->dump_real_ts = ktime_get_real_ns();
5401 devlink_health_dump_clear(reporter);
5405 int devlink_health_report(struct devlink_health_reporter *reporter,
5406 const char *msg, void *priv_ctx)
5408 enum devlink_health_reporter_state prev_health_state;
5409 struct devlink *devlink = reporter->devlink;
5410 unsigned long recover_ts_threshold;
5412 /* write a log message of the current error */
5414 trace_devlink_health_report(devlink, reporter->ops->name, msg);
5415 reporter->error_count++;
5416 prev_health_state = reporter->health_state;
5417 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
5418 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
5420 /* abort if the previous error wasn't recovered */
5421 recover_ts_threshold = reporter->last_recovery_ts +
5422 msecs_to_jiffies(reporter->graceful_period);
5423 if (reporter->auto_recover &&
5424 (prev_health_state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY ||
5425 (reporter->last_recovery_ts && reporter->recovery_count &&
5426 time_is_after_jiffies(recover_ts_threshold)))) {
5427 trace_devlink_health_recover_aborted(devlink,
5428 reporter->ops->name,
5429 reporter->health_state,
5431 reporter->last_recovery_ts);
5435 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
5437 if (reporter->auto_dump) {
5438 mutex_lock(&reporter->dump_lock);
5439 /* store current dump of current error, for later analysis */
5440 devlink_health_do_dump(reporter, priv_ctx, NULL);
5441 mutex_unlock(&reporter->dump_lock);
5444 if (reporter->auto_recover)
5445 return devlink_health_reporter_recover(reporter,
5450 EXPORT_SYMBOL_GPL(devlink_health_report);
5452 static struct devlink_health_reporter *
5453 devlink_health_reporter_get_from_attrs(struct devlink *devlink,
5454 struct nlattr **attrs)
5456 struct devlink_health_reporter *reporter;
5457 char *reporter_name;
5459 if (!attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME])
5462 reporter_name = nla_data(attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME]);
5463 mutex_lock(&devlink->reporters_lock);
5464 reporter = devlink_health_reporter_find_by_name(devlink, reporter_name);
5466 refcount_inc(&reporter->refcount);
5467 mutex_unlock(&devlink->reporters_lock);
5471 static struct devlink_health_reporter *
5472 devlink_health_reporter_get_from_info(struct devlink *devlink,
5473 struct genl_info *info)
5475 return devlink_health_reporter_get_from_attrs(devlink, info->attrs);
5478 static struct devlink_health_reporter *
5479 devlink_health_reporter_get_from_cb(struct netlink_callback *cb)
5481 const struct genl_dumpit_info *info = genl_dumpit_info(cb);
5482 struct devlink_health_reporter *reporter;
5483 struct nlattr **attrs = info->attrs;
5484 struct devlink *devlink;
5486 mutex_lock(&devlink_mutex);
5487 devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
5488 if (IS_ERR(devlink))
5491 reporter = devlink_health_reporter_get_from_attrs(devlink, attrs);
5492 mutex_unlock(&devlink_mutex);
5495 mutex_unlock(&devlink_mutex);
5500 devlink_health_reporter_put(struct devlink_health_reporter *reporter)
5502 refcount_dec(&reporter->refcount);
5506 devlink_health_reporter_state_update(struct devlink_health_reporter *reporter,
5507 enum devlink_health_reporter_state state)
5509 if (WARN_ON(state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY &&
5510 state != DEVLINK_HEALTH_REPORTER_STATE_ERROR))
5513 if (reporter->health_state == state)
5516 reporter->health_state = state;
5517 trace_devlink_health_reporter_state_update(reporter->devlink,
5518 reporter->ops->name, state);
5519 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
5521 EXPORT_SYMBOL_GPL(devlink_health_reporter_state_update);
5523 static int devlink_nl_cmd_health_reporter_get_doit(struct sk_buff *skb,
5524 struct genl_info *info)
5526 struct devlink *devlink = info->user_ptr[0];
5527 struct devlink_health_reporter *reporter;
5528 struct sk_buff *msg;
5531 reporter = devlink_health_reporter_get_from_info(devlink, info);
5535 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5541 err = devlink_nl_health_reporter_fill(msg, devlink, reporter,
5542 DEVLINK_CMD_HEALTH_REPORTER_GET,
5543 info->snd_portid, info->snd_seq,
5550 err = genlmsg_reply(msg, info);
5552 devlink_health_reporter_put(reporter);
5557 devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg,
5558 struct netlink_callback *cb)
5560 struct devlink_health_reporter *reporter;
5561 struct devlink *devlink;
5562 int start = cb->args[0];
5566 mutex_lock(&devlink_mutex);
5567 list_for_each_entry(devlink, &devlink_list, list) {
5568 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
5570 mutex_lock(&devlink->reporters_lock);
5571 list_for_each_entry(reporter, &devlink->reporter_list,
5577 err = devlink_nl_health_reporter_fill(msg, devlink,
5579 DEVLINK_CMD_HEALTH_REPORTER_GET,
5580 NETLINK_CB(cb->skb).portid,
5584 mutex_unlock(&devlink->reporters_lock);
5589 mutex_unlock(&devlink->reporters_lock);
5592 mutex_unlock(&devlink_mutex);
5599 devlink_nl_cmd_health_reporter_set_doit(struct sk_buff *skb,
5600 struct genl_info *info)
5602 struct devlink *devlink = info->user_ptr[0];
5603 struct devlink_health_reporter *reporter;
5606 reporter = devlink_health_reporter_get_from_info(devlink, info);
5610 if (!reporter->ops->recover &&
5611 (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] ||
5612 info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])) {
5616 if (!reporter->ops->dump &&
5617 info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]) {
5622 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD])
5623 reporter->graceful_period =
5624 nla_get_u64(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD]);
5626 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])
5627 reporter->auto_recover =
5628 nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER]);
5630 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP])
5631 reporter->auto_dump =
5632 nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]);
5634 devlink_health_reporter_put(reporter);
5637 devlink_health_reporter_put(reporter);
5641 static int devlink_nl_cmd_health_reporter_recover_doit(struct sk_buff *skb,
5642 struct genl_info *info)
5644 struct devlink *devlink = info->user_ptr[0];
5645 struct devlink_health_reporter *reporter;
5648 reporter = devlink_health_reporter_get_from_info(devlink, info);
5652 err = devlink_health_reporter_recover(reporter, NULL, info->extack);
5654 devlink_health_reporter_put(reporter);
5658 static int devlink_nl_cmd_health_reporter_diagnose_doit(struct sk_buff *skb,
5659 struct genl_info *info)
5661 struct devlink *devlink = info->user_ptr[0];
5662 struct devlink_health_reporter *reporter;
5663 struct devlink_fmsg *fmsg;
5666 reporter = devlink_health_reporter_get_from_info(devlink, info);
5670 if (!reporter->ops->diagnose) {
5671 devlink_health_reporter_put(reporter);
5675 fmsg = devlink_fmsg_alloc();
5677 devlink_health_reporter_put(reporter);
5681 err = devlink_fmsg_obj_nest_start(fmsg);
5685 err = reporter->ops->diagnose(reporter, fmsg, info->extack);
5689 err = devlink_fmsg_obj_nest_end(fmsg);
5693 err = devlink_fmsg_snd(fmsg, info,
5694 DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE, 0);
5697 devlink_fmsg_free(fmsg);
5698 devlink_health_reporter_put(reporter);
5703 devlink_nl_cmd_health_reporter_dump_get_dumpit(struct sk_buff *skb,
5704 struct netlink_callback *cb)
5706 struct devlink_health_reporter *reporter;
5707 u64 start = cb->args[0];
5710 reporter = devlink_health_reporter_get_from_cb(cb);
5714 if (!reporter->ops->dump) {
5718 mutex_lock(&reporter->dump_lock);
5720 err = devlink_health_do_dump(reporter, NULL, cb->extack);
5723 cb->args[1] = reporter->dump_ts;
5725 if (!reporter->dump_fmsg || cb->args[1] != reporter->dump_ts) {
5726 NL_SET_ERR_MSG_MOD(cb->extack, "Dump trampled, please retry");
5731 err = devlink_fmsg_dumpit(reporter->dump_fmsg, skb, cb,
5732 DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET);
5734 mutex_unlock(&reporter->dump_lock);
5736 devlink_health_reporter_put(reporter);
5741 devlink_nl_cmd_health_reporter_dump_clear_doit(struct sk_buff *skb,
5742 struct genl_info *info)
5744 struct devlink *devlink = info->user_ptr[0];
5745 struct devlink_health_reporter *reporter;
5747 reporter = devlink_health_reporter_get_from_info(devlink, info);
5751 if (!reporter->ops->dump) {
5752 devlink_health_reporter_put(reporter);
5756 mutex_lock(&reporter->dump_lock);
5757 devlink_health_dump_clear(reporter);
5758 mutex_unlock(&reporter->dump_lock);
5759 devlink_health_reporter_put(reporter);
5763 struct devlink_stats {
5766 struct u64_stats_sync syncp;
5770 * struct devlink_trap_policer_item - Packet trap policer attributes.
5771 * @policer: Immutable packet trap policer attributes.
5772 * @rate: Rate in packets / sec.
5773 * @burst: Burst size in packets.
5774 * @list: trap_policer_list member.
5776 * Describes packet trap policer attributes. Created by devlink during trap
5777 * policer registration.
5779 struct devlink_trap_policer_item {
5780 const struct devlink_trap_policer *policer;
5783 struct list_head list;
5787 * struct devlink_trap_group_item - Packet trap group attributes.
5788 * @group: Immutable packet trap group attributes.
5789 * @policer_item: Associated policer item. Can be NULL.
5790 * @list: trap_group_list member.
5791 * @stats: Trap group statistics.
5793 * Describes packet trap group attributes. Created by devlink during trap
5794 * group registration.
5796 struct devlink_trap_group_item {
5797 const struct devlink_trap_group *group;
5798 struct devlink_trap_policer_item *policer_item;
5799 struct list_head list;
5800 struct devlink_stats __percpu *stats;
5804 * struct devlink_trap_item - Packet trap attributes.
5805 * @trap: Immutable packet trap attributes.
5806 * @group_item: Associated group item.
5807 * @list: trap_list member.
5808 * @action: Trap action.
5809 * @stats: Trap statistics.
5810 * @priv: Driver private information.
5812 * Describes both mutable and immutable packet trap attributes. Created by
5813 * devlink during trap registration and used for all trap related operations.
5815 struct devlink_trap_item {
5816 const struct devlink_trap *trap;
5817 struct devlink_trap_group_item *group_item;
5818 struct list_head list;
5819 enum devlink_trap_action action;
5820 struct devlink_stats __percpu *stats;
5824 static struct devlink_trap_policer_item *
5825 devlink_trap_policer_item_lookup(struct devlink *devlink, u32 id)
5827 struct devlink_trap_policer_item *policer_item;
5829 list_for_each_entry(policer_item, &devlink->trap_policer_list, list) {
5830 if (policer_item->policer->id == id)
5831 return policer_item;
5837 static struct devlink_trap_item *
5838 devlink_trap_item_lookup(struct devlink *devlink, const char *name)
5840 struct devlink_trap_item *trap_item;
5842 list_for_each_entry(trap_item, &devlink->trap_list, list) {
5843 if (!strcmp(trap_item->trap->name, name))
5850 static struct devlink_trap_item *
5851 devlink_trap_item_get_from_info(struct devlink *devlink,
5852 struct genl_info *info)
5854 struct nlattr *attr;
5856 if (!info->attrs[DEVLINK_ATTR_TRAP_NAME])
5858 attr = info->attrs[DEVLINK_ATTR_TRAP_NAME];
5860 return devlink_trap_item_lookup(devlink, nla_data(attr));
5864 devlink_trap_action_get_from_info(struct genl_info *info,
5865 enum devlink_trap_action *p_trap_action)
5869 val = nla_get_u8(info->attrs[DEVLINK_ATTR_TRAP_ACTION]);
5871 case DEVLINK_TRAP_ACTION_DROP: /* fall-through */
5872 case DEVLINK_TRAP_ACTION_TRAP: /* fall-through */
5873 case DEVLINK_TRAP_ACTION_MIRROR:
5874 *p_trap_action = val;
5883 static int devlink_trap_metadata_put(struct sk_buff *msg,
5884 const struct devlink_trap *trap)
5886 struct nlattr *attr;
5888 attr = nla_nest_start(msg, DEVLINK_ATTR_TRAP_METADATA);
5892 if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_IN_PORT) &&
5893 nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_IN_PORT))
5894 goto nla_put_failure;
5895 if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_FA_COOKIE) &&
5896 nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_FA_COOKIE))
5897 goto nla_put_failure;
5899 nla_nest_end(msg, attr);
5904 nla_nest_cancel(msg, attr);
5908 static void devlink_trap_stats_read(struct devlink_stats __percpu *trap_stats,
5909 struct devlink_stats *stats)
5913 memset(stats, 0, sizeof(*stats));
5914 for_each_possible_cpu(i) {
5915 struct devlink_stats *cpu_stats;
5916 u64 rx_packets, rx_bytes;
5919 cpu_stats = per_cpu_ptr(trap_stats, i);
5921 start = u64_stats_fetch_begin_irq(&cpu_stats->syncp);
5922 rx_packets = cpu_stats->rx_packets;
5923 rx_bytes = cpu_stats->rx_bytes;
5924 } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start));
5926 stats->rx_packets += rx_packets;
5927 stats->rx_bytes += rx_bytes;
5931 static int devlink_trap_stats_put(struct sk_buff *msg,
5932 struct devlink_stats __percpu *trap_stats)
5934 struct devlink_stats stats;
5935 struct nlattr *attr;
5937 devlink_trap_stats_read(trap_stats, &stats);
5939 attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
5943 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_PACKETS,
5944 stats.rx_packets, DEVLINK_ATTR_PAD))
5945 goto nla_put_failure;
5947 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_BYTES,
5948 stats.rx_bytes, DEVLINK_ATTR_PAD))
5949 goto nla_put_failure;
5951 nla_nest_end(msg, attr);
5956 nla_nest_cancel(msg, attr);
5960 static int devlink_nl_trap_fill(struct sk_buff *msg, struct devlink *devlink,
5961 const struct devlink_trap_item *trap_item,
5962 enum devlink_command cmd, u32 portid, u32 seq,
5965 struct devlink_trap_group_item *group_item = trap_item->group_item;
5969 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
5973 if (devlink_nl_put_handle(msg, devlink))
5974 goto nla_put_failure;
5976 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
5977 group_item->group->name))
5978 goto nla_put_failure;
5980 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_NAME, trap_item->trap->name))
5981 goto nla_put_failure;
5983 if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_TYPE, trap_item->trap->type))
5984 goto nla_put_failure;
5986 if (trap_item->trap->generic &&
5987 nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
5988 goto nla_put_failure;
5990 if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_ACTION, trap_item->action))
5991 goto nla_put_failure;
5993 err = devlink_trap_metadata_put(msg, trap_item->trap);
5995 goto nla_put_failure;
5997 err = devlink_trap_stats_put(msg, trap_item->stats);
5999 goto nla_put_failure;
6001 genlmsg_end(msg, hdr);
6006 genlmsg_cancel(msg, hdr);
6010 static int devlink_nl_cmd_trap_get_doit(struct sk_buff *skb,
6011 struct genl_info *info)
6013 struct netlink_ext_ack *extack = info->extack;
6014 struct devlink *devlink = info->user_ptr[0];
6015 struct devlink_trap_item *trap_item;
6016 struct sk_buff *msg;
6019 if (list_empty(&devlink->trap_list))
6022 trap_item = devlink_trap_item_get_from_info(devlink, info);
6024 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
6028 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6032 err = devlink_nl_trap_fill(msg, devlink, trap_item,
6033 DEVLINK_CMD_TRAP_NEW, info->snd_portid,
6038 return genlmsg_reply(msg, info);
6045 static int devlink_nl_cmd_trap_get_dumpit(struct sk_buff *msg,
6046 struct netlink_callback *cb)
6048 struct devlink_trap_item *trap_item;
6049 struct devlink *devlink;
6050 int start = cb->args[0];
6054 mutex_lock(&devlink_mutex);
6055 list_for_each_entry(devlink, &devlink_list, list) {
6056 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
6058 mutex_lock(&devlink->lock);
6059 list_for_each_entry(trap_item, &devlink->trap_list, list) {
6064 err = devlink_nl_trap_fill(msg, devlink, trap_item,
6065 DEVLINK_CMD_TRAP_NEW,
6066 NETLINK_CB(cb->skb).portid,
6070 mutex_unlock(&devlink->lock);
6075 mutex_unlock(&devlink->lock);
6078 mutex_unlock(&devlink_mutex);
6084 static int __devlink_trap_action_set(struct devlink *devlink,
6085 struct devlink_trap_item *trap_item,
6086 enum devlink_trap_action trap_action,
6087 struct netlink_ext_ack *extack)
6091 if (trap_item->action != trap_action &&
6092 trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP) {
6093 NL_SET_ERR_MSG_MOD(extack, "Cannot change action of non-drop traps. Skipping");
6097 err = devlink->ops->trap_action_set(devlink, trap_item->trap,
6102 trap_item->action = trap_action;
6107 static int devlink_trap_action_set(struct devlink *devlink,
6108 struct devlink_trap_item *trap_item,
6109 struct genl_info *info)
6111 enum devlink_trap_action trap_action;
6114 if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
6117 err = devlink_trap_action_get_from_info(info, &trap_action);
6119 NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
6123 return __devlink_trap_action_set(devlink, trap_item, trap_action,
6127 static int devlink_nl_cmd_trap_set_doit(struct sk_buff *skb,
6128 struct genl_info *info)
6130 struct netlink_ext_ack *extack = info->extack;
6131 struct devlink *devlink = info->user_ptr[0];
6132 struct devlink_trap_item *trap_item;
6135 if (list_empty(&devlink->trap_list))
6138 trap_item = devlink_trap_item_get_from_info(devlink, info);
6140 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
6144 err = devlink_trap_action_set(devlink, trap_item, info);
6151 static struct devlink_trap_group_item *
6152 devlink_trap_group_item_lookup(struct devlink *devlink, const char *name)
6154 struct devlink_trap_group_item *group_item;
6156 list_for_each_entry(group_item, &devlink->trap_group_list, list) {
6157 if (!strcmp(group_item->group->name, name))
6164 static struct devlink_trap_group_item *
6165 devlink_trap_group_item_lookup_by_id(struct devlink *devlink, u16 id)
6167 struct devlink_trap_group_item *group_item;
6169 list_for_each_entry(group_item, &devlink->trap_group_list, list) {
6170 if (group_item->group->id == id)
6177 static struct devlink_trap_group_item *
6178 devlink_trap_group_item_get_from_info(struct devlink *devlink,
6179 struct genl_info *info)
6183 if (!info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME])
6185 name = nla_data(info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME]);
6187 return devlink_trap_group_item_lookup(devlink, name);
6191 devlink_nl_trap_group_fill(struct sk_buff *msg, struct devlink *devlink,
6192 const struct devlink_trap_group_item *group_item,
6193 enum devlink_command cmd, u32 portid, u32 seq,
6199 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
6203 if (devlink_nl_put_handle(msg, devlink))
6204 goto nla_put_failure;
6206 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
6207 group_item->group->name))
6208 goto nla_put_failure;
6210 if (group_item->group->generic &&
6211 nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
6212 goto nla_put_failure;
6214 if (group_item->policer_item &&
6215 nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID,
6216 group_item->policer_item->policer->id))
6217 goto nla_put_failure;
6219 err = devlink_trap_stats_put(msg, group_item->stats);
6221 goto nla_put_failure;
6223 genlmsg_end(msg, hdr);
6228 genlmsg_cancel(msg, hdr);
6232 static int devlink_nl_cmd_trap_group_get_doit(struct sk_buff *skb,
6233 struct genl_info *info)
6235 struct netlink_ext_ack *extack = info->extack;
6236 struct devlink *devlink = info->user_ptr[0];
6237 struct devlink_trap_group_item *group_item;
6238 struct sk_buff *msg;
6241 if (list_empty(&devlink->trap_group_list))
6244 group_item = devlink_trap_group_item_get_from_info(devlink, info);
6246 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
6250 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6254 err = devlink_nl_trap_group_fill(msg, devlink, group_item,
6255 DEVLINK_CMD_TRAP_GROUP_NEW,
6256 info->snd_portid, info->snd_seq, 0);
6258 goto err_trap_group_fill;
6260 return genlmsg_reply(msg, info);
6262 err_trap_group_fill:
6267 static int devlink_nl_cmd_trap_group_get_dumpit(struct sk_buff *msg,
6268 struct netlink_callback *cb)
6270 enum devlink_command cmd = DEVLINK_CMD_TRAP_GROUP_NEW;
6271 struct devlink_trap_group_item *group_item;
6272 u32 portid = NETLINK_CB(cb->skb).portid;
6273 struct devlink *devlink;
6274 int start = cb->args[0];
6278 mutex_lock(&devlink_mutex);
6279 list_for_each_entry(devlink, &devlink_list, list) {
6280 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
6282 mutex_lock(&devlink->lock);
6283 list_for_each_entry(group_item, &devlink->trap_group_list,
6289 err = devlink_nl_trap_group_fill(msg, devlink,
6295 mutex_unlock(&devlink->lock);
6300 mutex_unlock(&devlink->lock);
6303 mutex_unlock(&devlink_mutex);
6310 __devlink_trap_group_action_set(struct devlink *devlink,
6311 struct devlink_trap_group_item *group_item,
6312 enum devlink_trap_action trap_action,
6313 struct netlink_ext_ack *extack)
6315 const char *group_name = group_item->group->name;
6316 struct devlink_trap_item *trap_item;
6319 list_for_each_entry(trap_item, &devlink->trap_list, list) {
6320 if (strcmp(trap_item->group_item->group->name, group_name))
6322 err = __devlink_trap_action_set(devlink, trap_item,
6323 trap_action, extack);
6332 devlink_trap_group_action_set(struct devlink *devlink,
6333 struct devlink_trap_group_item *group_item,
6334 struct genl_info *info, bool *p_modified)
6336 enum devlink_trap_action trap_action;
6339 if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
6342 err = devlink_trap_action_get_from_info(info, &trap_action);
6344 NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
6348 err = __devlink_trap_group_action_set(devlink, group_item, trap_action,
6358 static int devlink_trap_group_set(struct devlink *devlink,
6359 struct devlink_trap_group_item *group_item,
6360 struct genl_info *info)
6362 struct devlink_trap_policer_item *policer_item;
6363 struct netlink_ext_ack *extack = info->extack;
6364 const struct devlink_trap_policer *policer;
6365 struct nlattr **attrs = info->attrs;
6368 if (!attrs[DEVLINK_ATTR_TRAP_POLICER_ID])
6371 if (!devlink->ops->trap_group_set)
6374 policer_item = group_item->policer_item;
6375 if (attrs[DEVLINK_ATTR_TRAP_POLICER_ID]) {
6378 policer_id = nla_get_u32(attrs[DEVLINK_ATTR_TRAP_POLICER_ID]);
6379 policer_item = devlink_trap_policer_item_lookup(devlink,
6381 if (policer_id && !policer_item) {
6382 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
6386 policer = policer_item ? policer_item->policer : NULL;
6388 err = devlink->ops->trap_group_set(devlink, group_item->group, policer);
6392 group_item->policer_item = policer_item;
6397 static int devlink_nl_cmd_trap_group_set_doit(struct sk_buff *skb,
6398 struct genl_info *info)
6400 struct netlink_ext_ack *extack = info->extack;
6401 struct devlink *devlink = info->user_ptr[0];
6402 struct devlink_trap_group_item *group_item;
6403 bool modified = false;
6406 if (list_empty(&devlink->trap_group_list))
6409 group_item = devlink_trap_group_item_get_from_info(devlink, info);
6411 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
6415 err = devlink_trap_group_action_set(devlink, group_item, info,
6420 err = devlink_trap_group_set(devlink, group_item, info);
6422 goto err_trap_group_set;
6428 NL_SET_ERR_MSG_MOD(extack, "Trap group set failed, but some changes were committed already");
6432 static struct devlink_trap_policer_item *
6433 devlink_trap_policer_item_get_from_info(struct devlink *devlink,
6434 struct genl_info *info)
6438 if (!info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID])
6440 id = nla_get_u32(info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID]);
6442 return devlink_trap_policer_item_lookup(devlink, id);
6446 devlink_trap_policer_stats_put(struct sk_buff *msg, struct devlink *devlink,
6447 const struct devlink_trap_policer *policer)
6449 struct nlattr *attr;
6453 if (!devlink->ops->trap_policer_counter_get)
6456 err = devlink->ops->trap_policer_counter_get(devlink, policer, &drops);
6460 attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
6464 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_DROPPED, drops,
6466 goto nla_put_failure;
6468 nla_nest_end(msg, attr);
6473 nla_nest_cancel(msg, attr);
6478 devlink_nl_trap_policer_fill(struct sk_buff *msg, struct devlink *devlink,
6479 const struct devlink_trap_policer_item *policer_item,
6480 enum devlink_command cmd, u32 portid, u32 seq,
6486 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
6490 if (devlink_nl_put_handle(msg, devlink))
6491 goto nla_put_failure;
6493 if (nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID,
6494 policer_item->policer->id))
6495 goto nla_put_failure;
6497 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_RATE,
6498 policer_item->rate, DEVLINK_ATTR_PAD))
6499 goto nla_put_failure;
6501 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_BURST,
6502 policer_item->burst, DEVLINK_ATTR_PAD))
6503 goto nla_put_failure;
6505 err = devlink_trap_policer_stats_put(msg, devlink,
6506 policer_item->policer);
6508 goto nla_put_failure;
6510 genlmsg_end(msg, hdr);
6515 genlmsg_cancel(msg, hdr);
6519 static int devlink_nl_cmd_trap_policer_get_doit(struct sk_buff *skb,
6520 struct genl_info *info)
6522 struct devlink_trap_policer_item *policer_item;
6523 struct netlink_ext_ack *extack = info->extack;
6524 struct devlink *devlink = info->user_ptr[0];
6525 struct sk_buff *msg;
6528 if (list_empty(&devlink->trap_policer_list))
6531 policer_item = devlink_trap_policer_item_get_from_info(devlink, info);
6532 if (!policer_item) {
6533 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
6537 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6541 err = devlink_nl_trap_policer_fill(msg, devlink, policer_item,
6542 DEVLINK_CMD_TRAP_POLICER_NEW,
6543 info->snd_portid, info->snd_seq, 0);
6545 goto err_trap_policer_fill;
6547 return genlmsg_reply(msg, info);
6549 err_trap_policer_fill:
6554 static int devlink_nl_cmd_trap_policer_get_dumpit(struct sk_buff *msg,
6555 struct netlink_callback *cb)
6557 enum devlink_command cmd = DEVLINK_CMD_TRAP_POLICER_NEW;
6558 struct devlink_trap_policer_item *policer_item;
6559 u32 portid = NETLINK_CB(cb->skb).portid;
6560 struct devlink *devlink;
6561 int start = cb->args[0];
6565 mutex_lock(&devlink_mutex);
6566 list_for_each_entry(devlink, &devlink_list, list) {
6567 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
6569 mutex_lock(&devlink->lock);
6570 list_for_each_entry(policer_item, &devlink->trap_policer_list,
6576 err = devlink_nl_trap_policer_fill(msg, devlink,
6582 mutex_unlock(&devlink->lock);
6587 mutex_unlock(&devlink->lock);
6590 mutex_unlock(&devlink_mutex);
6597 devlink_trap_policer_set(struct devlink *devlink,
6598 struct devlink_trap_policer_item *policer_item,
6599 struct genl_info *info)
6601 struct netlink_ext_ack *extack = info->extack;
6602 struct nlattr **attrs = info->attrs;
6606 rate = policer_item->rate;
6607 burst = policer_item->burst;
6609 if (attrs[DEVLINK_ATTR_TRAP_POLICER_RATE])
6610 rate = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_RATE]);
6612 if (attrs[DEVLINK_ATTR_TRAP_POLICER_BURST])
6613 burst = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_BURST]);
6615 if (rate < policer_item->policer->min_rate) {
6616 NL_SET_ERR_MSG_MOD(extack, "Policer rate lower than limit");
6620 if (rate > policer_item->policer->max_rate) {
6621 NL_SET_ERR_MSG_MOD(extack, "Policer rate higher than limit");
6625 if (burst < policer_item->policer->min_burst) {
6626 NL_SET_ERR_MSG_MOD(extack, "Policer burst size lower than limit");
6630 if (burst > policer_item->policer->max_burst) {
6631 NL_SET_ERR_MSG_MOD(extack, "Policer burst size higher than limit");
6635 err = devlink->ops->trap_policer_set(devlink, policer_item->policer,
6636 rate, burst, info->extack);
6640 policer_item->rate = rate;
6641 policer_item->burst = burst;
6646 static int devlink_nl_cmd_trap_policer_set_doit(struct sk_buff *skb,
6647 struct genl_info *info)
6649 struct devlink_trap_policer_item *policer_item;
6650 struct netlink_ext_ack *extack = info->extack;
6651 struct devlink *devlink = info->user_ptr[0];
6653 if (list_empty(&devlink->trap_policer_list))
6656 if (!devlink->ops->trap_policer_set)
6659 policer_item = devlink_trap_policer_item_get_from_info(devlink, info);
6660 if (!policer_item) {
6661 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
6665 return devlink_trap_policer_set(devlink, policer_item, info);
6668 static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = {
6669 [DEVLINK_ATTR_UNSPEC] = { .strict_start_type =
6670 DEVLINK_ATTR_TRAP_POLICER_ID },
6671 [DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING },
6672 [DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING },
6673 [DEVLINK_ATTR_PORT_INDEX] = { .type = NLA_U32 },
6674 [DEVLINK_ATTR_PORT_TYPE] = { .type = NLA_U16 },
6675 [DEVLINK_ATTR_PORT_SPLIT_COUNT] = { .type = NLA_U32 },
6676 [DEVLINK_ATTR_SB_INDEX] = { .type = NLA_U32 },
6677 [DEVLINK_ATTR_SB_POOL_INDEX] = { .type = NLA_U16 },
6678 [DEVLINK_ATTR_SB_POOL_TYPE] = { .type = NLA_U8 },
6679 [DEVLINK_ATTR_SB_POOL_SIZE] = { .type = NLA_U32 },
6680 [DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE] = { .type = NLA_U8 },
6681 [DEVLINK_ATTR_SB_THRESHOLD] = { .type = NLA_U32 },
6682 [DEVLINK_ATTR_SB_TC_INDEX] = { .type = NLA_U16 },
6683 [DEVLINK_ATTR_ESWITCH_MODE] = { .type = NLA_U16 },
6684 [DEVLINK_ATTR_ESWITCH_INLINE_MODE] = { .type = NLA_U8 },
6685 [DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = { .type = NLA_U8 },
6686 [DEVLINK_ATTR_DPIPE_TABLE_NAME] = { .type = NLA_NUL_STRING },
6687 [DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED] = { .type = NLA_U8 },
6688 [DEVLINK_ATTR_RESOURCE_ID] = { .type = NLA_U64},
6689 [DEVLINK_ATTR_RESOURCE_SIZE] = { .type = NLA_U64},
6690 [DEVLINK_ATTR_PARAM_NAME] = { .type = NLA_NUL_STRING },
6691 [DEVLINK_ATTR_PARAM_TYPE] = { .type = NLA_U8 },
6692 [DEVLINK_ATTR_PARAM_VALUE_CMODE] = { .type = NLA_U8 },
6693 [DEVLINK_ATTR_REGION_NAME] = { .type = NLA_NUL_STRING },
6694 [DEVLINK_ATTR_REGION_SNAPSHOT_ID] = { .type = NLA_U32 },
6695 [DEVLINK_ATTR_REGION_CHUNK_ADDR] = { .type = NLA_U64 },
6696 [DEVLINK_ATTR_REGION_CHUNK_LEN] = { .type = NLA_U64 },
6697 [DEVLINK_ATTR_HEALTH_REPORTER_NAME] = { .type = NLA_NUL_STRING },
6698 [DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] = { .type = NLA_U64 },
6699 [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER] = { .type = NLA_U8 },
6700 [DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME] = { .type = NLA_NUL_STRING },
6701 [DEVLINK_ATTR_FLASH_UPDATE_COMPONENT] = { .type = NLA_NUL_STRING },
6702 [DEVLINK_ATTR_TRAP_NAME] = { .type = NLA_NUL_STRING },
6703 [DEVLINK_ATTR_TRAP_ACTION] = { .type = NLA_U8 },
6704 [DEVLINK_ATTR_TRAP_GROUP_NAME] = { .type = NLA_NUL_STRING },
6705 [DEVLINK_ATTR_NETNS_PID] = { .type = NLA_U32 },
6706 [DEVLINK_ATTR_NETNS_FD] = { .type = NLA_U32 },
6707 [DEVLINK_ATTR_NETNS_ID] = { .type = NLA_U32 },
6708 [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP] = { .type = NLA_U8 },
6709 [DEVLINK_ATTR_TRAP_POLICER_ID] = { .type = NLA_U32 },
6710 [DEVLINK_ATTR_TRAP_POLICER_RATE] = { .type = NLA_U64 },
6711 [DEVLINK_ATTR_TRAP_POLICER_BURST] = { .type = NLA_U64 },
6714 static const struct genl_ops devlink_nl_ops[] = {
6716 .cmd = DEVLINK_CMD_GET,
6717 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6718 .doit = devlink_nl_cmd_get_doit,
6719 .dumpit = devlink_nl_cmd_get_dumpit,
6720 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6721 /* can be retrieved by unprivileged users */
6724 .cmd = DEVLINK_CMD_PORT_GET,
6725 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6726 .doit = devlink_nl_cmd_port_get_doit,
6727 .dumpit = devlink_nl_cmd_port_get_dumpit,
6728 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
6729 /* can be retrieved by unprivileged users */
6732 .cmd = DEVLINK_CMD_PORT_SET,
6733 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6734 .doit = devlink_nl_cmd_port_set_doit,
6735 .flags = GENL_ADMIN_PERM,
6736 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
6739 .cmd = DEVLINK_CMD_PORT_SPLIT,
6740 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6741 .doit = devlink_nl_cmd_port_split_doit,
6742 .flags = GENL_ADMIN_PERM,
6743 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6744 DEVLINK_NL_FLAG_NO_LOCK,
6747 .cmd = DEVLINK_CMD_PORT_UNSPLIT,
6748 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6749 .doit = devlink_nl_cmd_port_unsplit_doit,
6750 .flags = GENL_ADMIN_PERM,
6751 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6752 DEVLINK_NL_FLAG_NO_LOCK,
6755 .cmd = DEVLINK_CMD_SB_GET,
6756 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6757 .doit = devlink_nl_cmd_sb_get_doit,
6758 .dumpit = devlink_nl_cmd_sb_get_dumpit,
6759 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6760 DEVLINK_NL_FLAG_NEED_SB,
6761 /* can be retrieved by unprivileged users */
6764 .cmd = DEVLINK_CMD_SB_POOL_GET,
6765 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6766 .doit = devlink_nl_cmd_sb_pool_get_doit,
6767 .dumpit = devlink_nl_cmd_sb_pool_get_dumpit,
6768 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6769 DEVLINK_NL_FLAG_NEED_SB,
6770 /* can be retrieved by unprivileged users */
6773 .cmd = DEVLINK_CMD_SB_POOL_SET,
6774 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6775 .doit = devlink_nl_cmd_sb_pool_set_doit,
6776 .flags = GENL_ADMIN_PERM,
6777 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6778 DEVLINK_NL_FLAG_NEED_SB,
6781 .cmd = DEVLINK_CMD_SB_PORT_POOL_GET,
6782 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6783 .doit = devlink_nl_cmd_sb_port_pool_get_doit,
6784 .dumpit = devlink_nl_cmd_sb_port_pool_get_dumpit,
6785 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
6786 DEVLINK_NL_FLAG_NEED_SB,
6787 /* can be retrieved by unprivileged users */
6790 .cmd = DEVLINK_CMD_SB_PORT_POOL_SET,
6791 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6792 .doit = devlink_nl_cmd_sb_port_pool_set_doit,
6793 .flags = GENL_ADMIN_PERM,
6794 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
6795 DEVLINK_NL_FLAG_NEED_SB,
6798 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_GET,
6799 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6800 .doit = devlink_nl_cmd_sb_tc_pool_bind_get_doit,
6801 .dumpit = devlink_nl_cmd_sb_tc_pool_bind_get_dumpit,
6802 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
6803 DEVLINK_NL_FLAG_NEED_SB,
6804 /* can be retrieved by unprivileged users */
6807 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_SET,
6808 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6809 .doit = devlink_nl_cmd_sb_tc_pool_bind_set_doit,
6810 .flags = GENL_ADMIN_PERM,
6811 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
6812 DEVLINK_NL_FLAG_NEED_SB,
6815 .cmd = DEVLINK_CMD_SB_OCC_SNAPSHOT,
6816 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6817 .doit = devlink_nl_cmd_sb_occ_snapshot_doit,
6818 .flags = GENL_ADMIN_PERM,
6819 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6820 DEVLINK_NL_FLAG_NEED_SB,
6823 .cmd = DEVLINK_CMD_SB_OCC_MAX_CLEAR,
6824 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6825 .doit = devlink_nl_cmd_sb_occ_max_clear_doit,
6826 .flags = GENL_ADMIN_PERM,
6827 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6828 DEVLINK_NL_FLAG_NEED_SB,
6831 .cmd = DEVLINK_CMD_ESWITCH_GET,
6832 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6833 .doit = devlink_nl_cmd_eswitch_get_doit,
6834 .flags = GENL_ADMIN_PERM,
6835 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6836 DEVLINK_NL_FLAG_NO_LOCK,
6839 .cmd = DEVLINK_CMD_ESWITCH_SET,
6840 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6841 .doit = devlink_nl_cmd_eswitch_set_doit,
6842 .flags = GENL_ADMIN_PERM,
6843 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6844 DEVLINK_NL_FLAG_NO_LOCK,
6847 .cmd = DEVLINK_CMD_DPIPE_TABLE_GET,
6848 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6849 .doit = devlink_nl_cmd_dpipe_table_get,
6850 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6851 /* can be retrieved by unprivileged users */
6854 .cmd = DEVLINK_CMD_DPIPE_ENTRIES_GET,
6855 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6856 .doit = devlink_nl_cmd_dpipe_entries_get,
6857 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6858 /* can be retrieved by unprivileged users */
6861 .cmd = DEVLINK_CMD_DPIPE_HEADERS_GET,
6862 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6863 .doit = devlink_nl_cmd_dpipe_headers_get,
6864 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6865 /* can be retrieved by unprivileged users */
6868 .cmd = DEVLINK_CMD_DPIPE_TABLE_COUNTERS_SET,
6869 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6870 .doit = devlink_nl_cmd_dpipe_table_counters_set,
6871 .flags = GENL_ADMIN_PERM,
6872 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6875 .cmd = DEVLINK_CMD_RESOURCE_SET,
6876 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6877 .doit = devlink_nl_cmd_resource_set,
6878 .flags = GENL_ADMIN_PERM,
6879 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6882 .cmd = DEVLINK_CMD_RESOURCE_DUMP,
6883 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6884 .doit = devlink_nl_cmd_resource_dump,
6885 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6886 /* can be retrieved by unprivileged users */
6889 .cmd = DEVLINK_CMD_RELOAD,
6890 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6891 .doit = devlink_nl_cmd_reload,
6892 .flags = GENL_ADMIN_PERM,
6893 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6894 DEVLINK_NL_FLAG_NO_LOCK,
6897 .cmd = DEVLINK_CMD_PARAM_GET,
6898 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6899 .doit = devlink_nl_cmd_param_get_doit,
6900 .dumpit = devlink_nl_cmd_param_get_dumpit,
6901 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6902 /* can be retrieved by unprivileged users */
6905 .cmd = DEVLINK_CMD_PARAM_SET,
6906 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6907 .doit = devlink_nl_cmd_param_set_doit,
6908 .flags = GENL_ADMIN_PERM,
6909 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6912 .cmd = DEVLINK_CMD_PORT_PARAM_GET,
6913 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6914 .doit = devlink_nl_cmd_port_param_get_doit,
6915 .dumpit = devlink_nl_cmd_port_param_get_dumpit,
6916 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
6917 /* can be retrieved by unprivileged users */
6920 .cmd = DEVLINK_CMD_PORT_PARAM_SET,
6921 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6922 .doit = devlink_nl_cmd_port_param_set_doit,
6923 .flags = GENL_ADMIN_PERM,
6924 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
6927 .cmd = DEVLINK_CMD_REGION_GET,
6928 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6929 .doit = devlink_nl_cmd_region_get_doit,
6930 .dumpit = devlink_nl_cmd_region_get_dumpit,
6931 .flags = GENL_ADMIN_PERM,
6932 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6935 .cmd = DEVLINK_CMD_REGION_NEW,
6936 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6937 .doit = devlink_nl_cmd_region_new,
6938 .flags = GENL_ADMIN_PERM,
6939 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6942 .cmd = DEVLINK_CMD_REGION_DEL,
6943 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6944 .doit = devlink_nl_cmd_region_del,
6945 .flags = GENL_ADMIN_PERM,
6946 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6949 .cmd = DEVLINK_CMD_REGION_READ,
6950 .validate = GENL_DONT_VALIDATE_STRICT |
6951 GENL_DONT_VALIDATE_DUMP_STRICT,
6952 .dumpit = devlink_nl_cmd_region_read_dumpit,
6953 .flags = GENL_ADMIN_PERM,
6954 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6957 .cmd = DEVLINK_CMD_INFO_GET,
6958 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6959 .doit = devlink_nl_cmd_info_get_doit,
6960 .dumpit = devlink_nl_cmd_info_get_dumpit,
6961 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6962 /* can be retrieved by unprivileged users */
6965 .cmd = DEVLINK_CMD_HEALTH_REPORTER_GET,
6966 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6967 .doit = devlink_nl_cmd_health_reporter_get_doit,
6968 .dumpit = devlink_nl_cmd_health_reporter_get_dumpit,
6969 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6970 DEVLINK_NL_FLAG_NO_LOCK,
6971 /* can be retrieved by unprivileged users */
6974 .cmd = DEVLINK_CMD_HEALTH_REPORTER_SET,
6975 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6976 .doit = devlink_nl_cmd_health_reporter_set_doit,
6977 .flags = GENL_ADMIN_PERM,
6978 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6979 DEVLINK_NL_FLAG_NO_LOCK,
6982 .cmd = DEVLINK_CMD_HEALTH_REPORTER_RECOVER,
6983 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6984 .doit = devlink_nl_cmd_health_reporter_recover_doit,
6985 .flags = GENL_ADMIN_PERM,
6986 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6987 DEVLINK_NL_FLAG_NO_LOCK,
6990 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE,
6991 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6992 .doit = devlink_nl_cmd_health_reporter_diagnose_doit,
6993 .flags = GENL_ADMIN_PERM,
6994 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6995 DEVLINK_NL_FLAG_NO_LOCK,
6998 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET,
6999 .validate = GENL_DONT_VALIDATE_STRICT |
7000 GENL_DONT_VALIDATE_DUMP_STRICT,
7001 .dumpit = devlink_nl_cmd_health_reporter_dump_get_dumpit,
7002 .flags = GENL_ADMIN_PERM,
7003 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
7004 DEVLINK_NL_FLAG_NO_LOCK,
7007 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_CLEAR,
7008 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7009 .doit = devlink_nl_cmd_health_reporter_dump_clear_doit,
7010 .flags = GENL_ADMIN_PERM,
7011 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
7012 DEVLINK_NL_FLAG_NO_LOCK,
7015 .cmd = DEVLINK_CMD_FLASH_UPDATE,
7016 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7017 .doit = devlink_nl_cmd_flash_update,
7018 .flags = GENL_ADMIN_PERM,
7019 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
7022 .cmd = DEVLINK_CMD_TRAP_GET,
7023 .doit = devlink_nl_cmd_trap_get_doit,
7024 .dumpit = devlink_nl_cmd_trap_get_dumpit,
7025 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
7026 /* can be retrieved by unprivileged users */
7029 .cmd = DEVLINK_CMD_TRAP_SET,
7030 .doit = devlink_nl_cmd_trap_set_doit,
7031 .flags = GENL_ADMIN_PERM,
7032 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
7035 .cmd = DEVLINK_CMD_TRAP_GROUP_GET,
7036 .doit = devlink_nl_cmd_trap_group_get_doit,
7037 .dumpit = devlink_nl_cmd_trap_group_get_dumpit,
7038 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
7039 /* can be retrieved by unprivileged users */
7042 .cmd = DEVLINK_CMD_TRAP_GROUP_SET,
7043 .doit = devlink_nl_cmd_trap_group_set_doit,
7044 .flags = GENL_ADMIN_PERM,
7045 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
7048 .cmd = DEVLINK_CMD_TRAP_POLICER_GET,
7049 .doit = devlink_nl_cmd_trap_policer_get_doit,
7050 .dumpit = devlink_nl_cmd_trap_policer_get_dumpit,
7051 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
7052 /* can be retrieved by unprivileged users */
7055 .cmd = DEVLINK_CMD_TRAP_POLICER_SET,
7056 .doit = devlink_nl_cmd_trap_policer_set_doit,
7057 .flags = GENL_ADMIN_PERM,
7058 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
7062 static struct genl_family devlink_nl_family __ro_after_init = {
7063 .name = DEVLINK_GENL_NAME,
7064 .version = DEVLINK_GENL_VERSION,
7065 .maxattr = DEVLINK_ATTR_MAX,
7066 .policy = devlink_nl_policy,
7068 .pre_doit = devlink_nl_pre_doit,
7069 .post_doit = devlink_nl_post_doit,
7070 .module = THIS_MODULE,
7071 .ops = devlink_nl_ops,
7072 .n_ops = ARRAY_SIZE(devlink_nl_ops),
7073 .mcgrps = devlink_nl_mcgrps,
7074 .n_mcgrps = ARRAY_SIZE(devlink_nl_mcgrps),
7078 * devlink_alloc - Allocate new devlink instance resources
7081 * @priv_size: size of user private data
7083 * Allocate new devlink instance resources, including devlink index
7086 struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size)
7088 struct devlink *devlink;
7093 devlink = kzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL);
7097 xa_init_flags(&devlink->snapshot_ids, XA_FLAGS_ALLOC);
7098 __devlink_net_set(devlink, &init_net);
7099 INIT_LIST_HEAD(&devlink->port_list);
7100 INIT_LIST_HEAD(&devlink->sb_list);
7101 INIT_LIST_HEAD_RCU(&devlink->dpipe_table_list);
7102 INIT_LIST_HEAD(&devlink->resource_list);
7103 INIT_LIST_HEAD(&devlink->param_list);
7104 INIT_LIST_HEAD(&devlink->region_list);
7105 INIT_LIST_HEAD(&devlink->reporter_list);
7106 INIT_LIST_HEAD(&devlink->trap_list);
7107 INIT_LIST_HEAD(&devlink->trap_group_list);
7108 INIT_LIST_HEAD(&devlink->trap_policer_list);
7109 mutex_init(&devlink->lock);
7110 mutex_init(&devlink->reporters_lock);
7113 EXPORT_SYMBOL_GPL(devlink_alloc);
7116 * devlink_register - Register devlink instance
7119 * @dev: parent device
7121 int devlink_register(struct devlink *devlink, struct device *dev)
7123 mutex_lock(&devlink_mutex);
7125 devlink->registered = true;
7126 list_add_tail(&devlink->list, &devlink_list);
7127 devlink_notify(devlink, DEVLINK_CMD_NEW);
7128 mutex_unlock(&devlink_mutex);
7131 EXPORT_SYMBOL_GPL(devlink_register);
7134 * devlink_unregister - Unregister devlink instance
7138 void devlink_unregister(struct devlink *devlink)
7140 mutex_lock(&devlink_mutex);
7141 WARN_ON(devlink_reload_supported(devlink) &&
7142 devlink->reload_enabled);
7143 devlink_notify(devlink, DEVLINK_CMD_DEL);
7144 list_del(&devlink->list);
7145 mutex_unlock(&devlink_mutex);
7147 EXPORT_SYMBOL_GPL(devlink_unregister);
7150 * devlink_reload_enable - Enable reload of devlink instance
7154 * Should be called at end of device initialization
7155 * process when reload operation is supported.
7157 void devlink_reload_enable(struct devlink *devlink)
7159 mutex_lock(&devlink_mutex);
7160 devlink->reload_enabled = true;
7161 mutex_unlock(&devlink_mutex);
7163 EXPORT_SYMBOL_GPL(devlink_reload_enable);
7166 * devlink_reload_disable - Disable reload of devlink instance
7170 * Should be called at the beginning of device cleanup
7171 * process when reload operation is supported.
7173 void devlink_reload_disable(struct devlink *devlink)
7175 mutex_lock(&devlink_mutex);
7176 /* Mutex is taken which ensures that no reload operation is in
7177 * progress while setting up forbidded flag.
7179 devlink->reload_enabled = false;
7180 mutex_unlock(&devlink_mutex);
7182 EXPORT_SYMBOL_GPL(devlink_reload_disable);
7185 * devlink_free - Free devlink instance resources
7189 void devlink_free(struct devlink *devlink)
7191 mutex_destroy(&devlink->reporters_lock);
7192 mutex_destroy(&devlink->lock);
7193 WARN_ON(!list_empty(&devlink->trap_policer_list));
7194 WARN_ON(!list_empty(&devlink->trap_group_list));
7195 WARN_ON(!list_empty(&devlink->trap_list));
7196 WARN_ON(!list_empty(&devlink->reporter_list));
7197 WARN_ON(!list_empty(&devlink->region_list));
7198 WARN_ON(!list_empty(&devlink->param_list));
7199 WARN_ON(!list_empty(&devlink->resource_list));
7200 WARN_ON(!list_empty(&devlink->dpipe_table_list));
7201 WARN_ON(!list_empty(&devlink->sb_list));
7202 WARN_ON(!list_empty(&devlink->port_list));
7204 xa_destroy(&devlink->snapshot_ids);
7208 EXPORT_SYMBOL_GPL(devlink_free);
7210 static void devlink_port_type_warn(struct work_struct *work)
7212 WARN(true, "Type was not set for devlink port.");
7215 static bool devlink_port_type_should_warn(struct devlink_port *devlink_port)
7217 /* Ignore CPU and DSA flavours. */
7218 return devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_CPU &&
7219 devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_DSA;
7222 #define DEVLINK_PORT_TYPE_WARN_TIMEOUT (HZ * 3600)
7224 static void devlink_port_type_warn_schedule(struct devlink_port *devlink_port)
7226 if (!devlink_port_type_should_warn(devlink_port))
7228 /* Schedule a work to WARN in case driver does not set port
7229 * type within timeout.
7231 schedule_delayed_work(&devlink_port->type_warn_dw,
7232 DEVLINK_PORT_TYPE_WARN_TIMEOUT);
7235 static void devlink_port_type_warn_cancel(struct devlink_port *devlink_port)
7237 if (!devlink_port_type_should_warn(devlink_port))
7239 cancel_delayed_work_sync(&devlink_port->type_warn_dw);
7243 * devlink_port_register - Register devlink port
7246 * @devlink_port: devlink port
7247 * @port_index: driver-specific numerical identifier of the port
7249 * Register devlink port with provided port index. User can use
7250 * any indexing, even hw-related one. devlink_port structure
7251 * is convenient to be embedded inside user driver private structure.
7252 * Note that the caller should take care of zeroing the devlink_port
7255 int devlink_port_register(struct devlink *devlink,
7256 struct devlink_port *devlink_port,
7257 unsigned int port_index)
7259 mutex_lock(&devlink->lock);
7260 if (devlink_port_index_exists(devlink, port_index)) {
7261 mutex_unlock(&devlink->lock);
7264 devlink_port->devlink = devlink;
7265 devlink_port->index = port_index;
7266 devlink_port->registered = true;
7267 spin_lock_init(&devlink_port->type_lock);
7268 list_add_tail(&devlink_port->list, &devlink->port_list);
7269 INIT_LIST_HEAD(&devlink_port->param_list);
7270 mutex_unlock(&devlink->lock);
7271 INIT_DELAYED_WORK(&devlink_port->type_warn_dw, &devlink_port_type_warn);
7272 devlink_port_type_warn_schedule(devlink_port);
7273 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
7276 EXPORT_SYMBOL_GPL(devlink_port_register);
7279 * devlink_port_unregister - Unregister devlink port
7281 * @devlink_port: devlink port
7283 void devlink_port_unregister(struct devlink_port *devlink_port)
7285 struct devlink *devlink = devlink_port->devlink;
7287 devlink_port_type_warn_cancel(devlink_port);
7288 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
7289 mutex_lock(&devlink->lock);
7290 list_del(&devlink_port->list);
7291 mutex_unlock(&devlink->lock);
7293 EXPORT_SYMBOL_GPL(devlink_port_unregister);
7295 static void __devlink_port_type_set(struct devlink_port *devlink_port,
7296 enum devlink_port_type type,
7299 if (WARN_ON(!devlink_port->registered))
7301 devlink_port_type_warn_cancel(devlink_port);
7302 spin_lock_bh(&devlink_port->type_lock);
7303 devlink_port->type = type;
7304 devlink_port->type_dev = type_dev;
7305 spin_unlock_bh(&devlink_port->type_lock);
7306 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
7310 * devlink_port_type_eth_set - Set port type to Ethernet
7312 * @devlink_port: devlink port
7313 * @netdev: related netdevice
7315 void devlink_port_type_eth_set(struct devlink_port *devlink_port,
7316 struct net_device *netdev)
7318 const struct net_device_ops *ops = netdev->netdev_ops;
7320 /* If driver registers devlink port, it should set devlink port
7321 * attributes accordingly so the compat functions are called
7322 * and the original ops are not used.
7324 if (ops->ndo_get_phys_port_name) {
7325 /* Some drivers use the same set of ndos for netdevs
7326 * that have devlink_port registered and also for
7327 * those who don't. Make sure that ndo_get_phys_port_name
7328 * returns -EOPNOTSUPP here in case it is defined.
7331 char name[IFNAMSIZ];
7334 err = ops->ndo_get_phys_port_name(netdev, name, sizeof(name));
7335 WARN_ON(err != -EOPNOTSUPP);
7337 if (ops->ndo_get_port_parent_id) {
7338 /* Some drivers use the same set of ndos for netdevs
7339 * that have devlink_port registered and also for
7340 * those who don't. Make sure that ndo_get_port_parent_id
7341 * returns -EOPNOTSUPP here in case it is defined.
7344 struct netdev_phys_item_id ppid;
7347 err = ops->ndo_get_port_parent_id(netdev, &ppid);
7348 WARN_ON(err != -EOPNOTSUPP);
7350 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH, netdev);
7352 EXPORT_SYMBOL_GPL(devlink_port_type_eth_set);
7355 * devlink_port_type_ib_set - Set port type to InfiniBand
7357 * @devlink_port: devlink port
7358 * @ibdev: related IB device
7360 void devlink_port_type_ib_set(struct devlink_port *devlink_port,
7361 struct ib_device *ibdev)
7363 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_IB, ibdev);
7365 EXPORT_SYMBOL_GPL(devlink_port_type_ib_set);
7368 * devlink_port_type_clear - Clear port type
7370 * @devlink_port: devlink port
7372 void devlink_port_type_clear(struct devlink_port *devlink_port)
7374 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET, NULL);
7375 devlink_port_type_warn_schedule(devlink_port);
7377 EXPORT_SYMBOL_GPL(devlink_port_type_clear);
7379 static int __devlink_port_attrs_set(struct devlink_port *devlink_port,
7380 enum devlink_port_flavour flavour,
7381 const unsigned char *switch_id,
7382 unsigned char switch_id_len)
7384 struct devlink_port_attrs *attrs = &devlink_port->attrs;
7386 if (WARN_ON(devlink_port->registered))
7389 attrs->flavour = flavour;
7391 attrs->switch_port = true;
7392 if (WARN_ON(switch_id_len > MAX_PHYS_ITEM_ID_LEN))
7393 switch_id_len = MAX_PHYS_ITEM_ID_LEN;
7394 memcpy(attrs->switch_id.id, switch_id, switch_id_len);
7395 attrs->switch_id.id_len = switch_id_len;
7397 attrs->switch_port = false;
7403 * devlink_port_attrs_set - Set port attributes
7405 * @devlink_port: devlink port
7406 * @flavour: flavour of the port
7407 * @port_number: number of the port that is facing user, for example
7408 * the front panel port number
7409 * @split: indicates if this is split port
7410 * @split_subport_number: if the port is split, this is the number
7412 * @switch_id: if the port is part of switch, this is buffer with ID,
7413 * otwerwise this is NULL
7414 * @switch_id_len: length of the switch_id buffer
7416 void devlink_port_attrs_set(struct devlink_port *devlink_port,
7417 enum devlink_port_flavour flavour,
7418 u32 port_number, bool split,
7419 u32 split_subport_number,
7420 const unsigned char *switch_id,
7421 unsigned char switch_id_len)
7423 struct devlink_port_attrs *attrs = &devlink_port->attrs;
7426 ret = __devlink_port_attrs_set(devlink_port, flavour,
7427 switch_id, switch_id_len);
7430 attrs->split = split;
7431 attrs->phys.port_number = port_number;
7432 attrs->phys.split_subport_number = split_subport_number;
7434 EXPORT_SYMBOL_GPL(devlink_port_attrs_set);
7437 * devlink_port_attrs_pci_pf_set - Set PCI PF port attributes
7439 * @devlink_port: devlink port
7440 * @pf: associated PF for the devlink port instance
7441 * @switch_id: if the port is part of switch, this is buffer with ID,
7442 * otherwise this is NULL
7443 * @switch_id_len: length of the switch_id buffer
7445 void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port,
7446 const unsigned char *switch_id,
7447 unsigned char switch_id_len, u16 pf)
7449 struct devlink_port_attrs *attrs = &devlink_port->attrs;
7452 ret = __devlink_port_attrs_set(devlink_port,
7453 DEVLINK_PORT_FLAVOUR_PCI_PF,
7454 switch_id, switch_id_len);
7458 attrs->pci_pf.pf = pf;
7460 EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_pf_set);
7463 * devlink_port_attrs_pci_vf_set - Set PCI VF port attributes
7465 * @devlink_port: devlink port
7466 * @pf: associated PF for the devlink port instance
7467 * @vf: associated VF of a PF for the devlink port instance
7468 * @switch_id: if the port is part of switch, this is buffer with ID,
7469 * otherwise this is NULL
7470 * @switch_id_len: length of the switch_id buffer
7472 void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port,
7473 const unsigned char *switch_id,
7474 unsigned char switch_id_len,
7477 struct devlink_port_attrs *attrs = &devlink_port->attrs;
7480 ret = __devlink_port_attrs_set(devlink_port,
7481 DEVLINK_PORT_FLAVOUR_PCI_VF,
7482 switch_id, switch_id_len);
7485 attrs->pci_vf.pf = pf;
7486 attrs->pci_vf.vf = vf;
7488 EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_vf_set);
7490 static int __devlink_port_phys_port_name_get(struct devlink_port *devlink_port,
7491 char *name, size_t len)
7493 struct devlink_port_attrs *attrs = &devlink_port->attrs;
7499 switch (attrs->flavour) {
7500 case DEVLINK_PORT_FLAVOUR_PHYSICAL:
7501 case DEVLINK_PORT_FLAVOUR_VIRTUAL:
7503 n = snprintf(name, len, "p%u", attrs->phys.port_number);
7505 n = snprintf(name, len, "p%us%u",
7506 attrs->phys.port_number,
7507 attrs->phys.split_subport_number);
7509 case DEVLINK_PORT_FLAVOUR_CPU:
7510 case DEVLINK_PORT_FLAVOUR_DSA:
7511 /* As CPU and DSA ports do not have a netdevice associated
7512 * case should not ever happen.
7516 case DEVLINK_PORT_FLAVOUR_PCI_PF:
7517 n = snprintf(name, len, "pf%u", attrs->pci_pf.pf);
7519 case DEVLINK_PORT_FLAVOUR_PCI_VF:
7520 n = snprintf(name, len, "pf%uvf%u",
7521 attrs->pci_vf.pf, attrs->pci_vf.vf);
7531 int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
7532 u32 size, u16 ingress_pools_count,
7533 u16 egress_pools_count, u16 ingress_tc_count,
7534 u16 egress_tc_count)
7536 struct devlink_sb *devlink_sb;
7539 mutex_lock(&devlink->lock);
7540 if (devlink_sb_index_exists(devlink, sb_index)) {
7545 devlink_sb = kzalloc(sizeof(*devlink_sb), GFP_KERNEL);
7550 devlink_sb->index = sb_index;
7551 devlink_sb->size = size;
7552 devlink_sb->ingress_pools_count = ingress_pools_count;
7553 devlink_sb->egress_pools_count = egress_pools_count;
7554 devlink_sb->ingress_tc_count = ingress_tc_count;
7555 devlink_sb->egress_tc_count = egress_tc_count;
7556 list_add_tail(&devlink_sb->list, &devlink->sb_list);
7558 mutex_unlock(&devlink->lock);
7561 EXPORT_SYMBOL_GPL(devlink_sb_register);
7563 void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index)
7565 struct devlink_sb *devlink_sb;
7567 mutex_lock(&devlink->lock);
7568 devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
7569 WARN_ON(!devlink_sb);
7570 list_del(&devlink_sb->list);
7571 mutex_unlock(&devlink->lock);
7574 EXPORT_SYMBOL_GPL(devlink_sb_unregister);
7577 * devlink_dpipe_headers_register - register dpipe headers
7580 * @dpipe_headers: dpipe header array
7582 * Register the headers supported by hardware.
7584 int devlink_dpipe_headers_register(struct devlink *devlink,
7585 struct devlink_dpipe_headers *dpipe_headers)
7587 mutex_lock(&devlink->lock);
7588 devlink->dpipe_headers = dpipe_headers;
7589 mutex_unlock(&devlink->lock);
7592 EXPORT_SYMBOL_GPL(devlink_dpipe_headers_register);
7595 * devlink_dpipe_headers_unregister - unregister dpipe headers
7599 * Unregister the headers supported by hardware.
7601 void devlink_dpipe_headers_unregister(struct devlink *devlink)
7603 mutex_lock(&devlink->lock);
7604 devlink->dpipe_headers = NULL;
7605 mutex_unlock(&devlink->lock);
7607 EXPORT_SYMBOL_GPL(devlink_dpipe_headers_unregister);
7610 * devlink_dpipe_table_counter_enabled - check if counter allocation
7613 * @table_name: tables name
7615 * Used by driver to check if counter allocation is required.
7616 * After counter allocation is turned on the table entries
7617 * are updated to include counter statistics.
7619 * After that point on the driver must respect the counter
7620 * state so that each entry added to the table is added
7623 bool devlink_dpipe_table_counter_enabled(struct devlink *devlink,
7624 const char *table_name)
7626 struct devlink_dpipe_table *table;
7630 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
7631 table_name, devlink);
7634 enabled = table->counters_enabled;
7638 EXPORT_SYMBOL_GPL(devlink_dpipe_table_counter_enabled);
7641 * devlink_dpipe_table_register - register dpipe table
7644 * @table_name: table name
7645 * @table_ops: table ops
7647 * @counter_control_extern: external control for counters
7649 int devlink_dpipe_table_register(struct devlink *devlink,
7650 const char *table_name,
7651 struct devlink_dpipe_table_ops *table_ops,
7652 void *priv, bool counter_control_extern)
7654 struct devlink_dpipe_table *table;
7657 if (WARN_ON(!table_ops->size_get))
7660 mutex_lock(&devlink->lock);
7662 if (devlink_dpipe_table_find(&devlink->dpipe_table_list, table_name,
7668 table = kzalloc(sizeof(*table), GFP_KERNEL);
7674 table->name = table_name;
7675 table->table_ops = table_ops;
7677 table->counter_control_extern = counter_control_extern;
7679 list_add_tail_rcu(&table->list, &devlink->dpipe_table_list);
7681 mutex_unlock(&devlink->lock);
7684 EXPORT_SYMBOL_GPL(devlink_dpipe_table_register);
7687 * devlink_dpipe_table_unregister - unregister dpipe table
7690 * @table_name: table name
7692 void devlink_dpipe_table_unregister(struct devlink *devlink,
7693 const char *table_name)
7695 struct devlink_dpipe_table *table;
7697 mutex_lock(&devlink->lock);
7698 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
7699 table_name, devlink);
7702 list_del_rcu(&table->list);
7703 mutex_unlock(&devlink->lock);
7704 kfree_rcu(table, rcu);
7707 mutex_unlock(&devlink->lock);
7709 EXPORT_SYMBOL_GPL(devlink_dpipe_table_unregister);
7712 * devlink_resource_register - devlink resource register
7715 * @resource_name: resource's name
7716 * @resource_size: resource's size
7717 * @resource_id: resource's id
7718 * @parent_resource_id: resource's parent id
7719 * @size_params: size parameters
7721 int devlink_resource_register(struct devlink *devlink,
7722 const char *resource_name,
7725 u64 parent_resource_id,
7726 const struct devlink_resource_size_params *size_params)
7728 struct devlink_resource *resource;
7729 struct list_head *resource_list;
7733 top_hierarchy = parent_resource_id == DEVLINK_RESOURCE_ID_PARENT_TOP;
7735 mutex_lock(&devlink->lock);
7736 resource = devlink_resource_find(devlink, NULL, resource_id);
7742 resource = kzalloc(sizeof(*resource), GFP_KERNEL);
7748 if (top_hierarchy) {
7749 resource_list = &devlink->resource_list;
7751 struct devlink_resource *parent_resource;
7753 parent_resource = devlink_resource_find(devlink, NULL,
7754 parent_resource_id);
7755 if (parent_resource) {
7756 resource_list = &parent_resource->resource_list;
7757 resource->parent = parent_resource;
7765 resource->name = resource_name;
7766 resource->size = resource_size;
7767 resource->size_new = resource_size;
7768 resource->id = resource_id;
7769 resource->size_valid = true;
7770 memcpy(&resource->size_params, size_params,
7771 sizeof(resource->size_params));
7772 INIT_LIST_HEAD(&resource->resource_list);
7773 list_add_tail(&resource->list, resource_list);
7775 mutex_unlock(&devlink->lock);
7778 EXPORT_SYMBOL_GPL(devlink_resource_register);
7781 * devlink_resources_unregister - free all resources
7784 * @resource: resource
7786 void devlink_resources_unregister(struct devlink *devlink,
7787 struct devlink_resource *resource)
7789 struct devlink_resource *tmp, *child_resource;
7790 struct list_head *resource_list;
7793 resource_list = &resource->resource_list;
7795 resource_list = &devlink->resource_list;
7798 mutex_lock(&devlink->lock);
7800 list_for_each_entry_safe(child_resource, tmp, resource_list, list) {
7801 devlink_resources_unregister(devlink, child_resource);
7802 list_del(&child_resource->list);
7803 kfree(child_resource);
7807 mutex_unlock(&devlink->lock);
7809 EXPORT_SYMBOL_GPL(devlink_resources_unregister);
7812 * devlink_resource_size_get - get and update size
7815 * @resource_id: the requested resource id
7816 * @p_resource_size: ptr to update
7818 int devlink_resource_size_get(struct devlink *devlink,
7820 u64 *p_resource_size)
7822 struct devlink_resource *resource;
7825 mutex_lock(&devlink->lock);
7826 resource = devlink_resource_find(devlink, NULL, resource_id);
7831 *p_resource_size = resource->size_new;
7832 resource->size = resource->size_new;
7834 mutex_unlock(&devlink->lock);
7837 EXPORT_SYMBOL_GPL(devlink_resource_size_get);
7840 * devlink_dpipe_table_resource_set - set the resource id
7843 * @table_name: table name
7844 * @resource_id: resource id
7845 * @resource_units: number of resource's units consumed per table's entry
7847 int devlink_dpipe_table_resource_set(struct devlink *devlink,
7848 const char *table_name, u64 resource_id,
7851 struct devlink_dpipe_table *table;
7854 mutex_lock(&devlink->lock);
7855 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
7856 table_name, devlink);
7861 table->resource_id = resource_id;
7862 table->resource_units = resource_units;
7863 table->resource_valid = true;
7865 mutex_unlock(&devlink->lock);
7868 EXPORT_SYMBOL_GPL(devlink_dpipe_table_resource_set);
7871 * devlink_resource_occ_get_register - register occupancy getter
7874 * @resource_id: resource id
7875 * @occ_get: occupancy getter callback
7876 * @occ_get_priv: occupancy getter callback priv
7878 void devlink_resource_occ_get_register(struct devlink *devlink,
7880 devlink_resource_occ_get_t *occ_get,
7883 struct devlink_resource *resource;
7885 mutex_lock(&devlink->lock);
7886 resource = devlink_resource_find(devlink, NULL, resource_id);
7887 if (WARN_ON(!resource))
7889 WARN_ON(resource->occ_get);
7891 resource->occ_get = occ_get;
7892 resource->occ_get_priv = occ_get_priv;
7894 mutex_unlock(&devlink->lock);
7896 EXPORT_SYMBOL_GPL(devlink_resource_occ_get_register);
7899 * devlink_resource_occ_get_unregister - unregister occupancy getter
7902 * @resource_id: resource id
7904 void devlink_resource_occ_get_unregister(struct devlink *devlink,
7907 struct devlink_resource *resource;
7909 mutex_lock(&devlink->lock);
7910 resource = devlink_resource_find(devlink, NULL, resource_id);
7911 if (WARN_ON(!resource))
7913 WARN_ON(!resource->occ_get);
7915 resource->occ_get = NULL;
7916 resource->occ_get_priv = NULL;
7918 mutex_unlock(&devlink->lock);
7920 EXPORT_SYMBOL_GPL(devlink_resource_occ_get_unregister);
7922 static int devlink_param_verify(const struct devlink_param *param)
7924 if (!param || !param->name || !param->supported_cmodes)
7927 return devlink_param_generic_verify(param);
7929 return devlink_param_driver_verify(param);
7932 static int __devlink_params_register(struct devlink *devlink,
7933 unsigned int port_index,
7934 struct list_head *param_list,
7935 const struct devlink_param *params,
7936 size_t params_count,
7937 enum devlink_command reg_cmd,
7938 enum devlink_command unreg_cmd)
7940 const struct devlink_param *param = params;
7944 mutex_lock(&devlink->lock);
7945 for (i = 0; i < params_count; i++, param++) {
7946 err = devlink_param_verify(param);
7950 err = devlink_param_register_one(devlink, port_index,
7951 param_list, param, reg_cmd);
7956 mutex_unlock(&devlink->lock);
7962 for (param--; i > 0; i--, param--)
7963 devlink_param_unregister_one(devlink, port_index, param_list,
7966 mutex_unlock(&devlink->lock);
7970 static void __devlink_params_unregister(struct devlink *devlink,
7971 unsigned int port_index,
7972 struct list_head *param_list,
7973 const struct devlink_param *params,
7974 size_t params_count,
7975 enum devlink_command cmd)
7977 const struct devlink_param *param = params;
7980 mutex_lock(&devlink->lock);
7981 for (i = 0; i < params_count; i++, param++)
7982 devlink_param_unregister_one(devlink, 0, param_list, param,
7984 mutex_unlock(&devlink->lock);
7988 * devlink_params_register - register configuration parameters
7991 * @params: configuration parameters array
7992 * @params_count: number of parameters provided
7994 * Register the configuration parameters supported by the driver.
7996 int devlink_params_register(struct devlink *devlink,
7997 const struct devlink_param *params,
7998 size_t params_count)
8000 return __devlink_params_register(devlink, 0, &devlink->param_list,
8001 params, params_count,
8002 DEVLINK_CMD_PARAM_NEW,
8003 DEVLINK_CMD_PARAM_DEL);
8005 EXPORT_SYMBOL_GPL(devlink_params_register);
8008 * devlink_params_unregister - unregister configuration parameters
8010 * @params: configuration parameters to unregister
8011 * @params_count: number of parameters provided
8013 void devlink_params_unregister(struct devlink *devlink,
8014 const struct devlink_param *params,
8015 size_t params_count)
8017 return __devlink_params_unregister(devlink, 0, &devlink->param_list,
8018 params, params_count,
8019 DEVLINK_CMD_PARAM_DEL);
8021 EXPORT_SYMBOL_GPL(devlink_params_unregister);
8024 * devlink_params_publish - publish configuration parameters
8028 * Publish previously registered configuration parameters.
8030 void devlink_params_publish(struct devlink *devlink)
8032 struct devlink_param_item *param_item;
8034 list_for_each_entry(param_item, &devlink->param_list, list) {
8035 if (param_item->published)
8037 param_item->published = true;
8038 devlink_param_notify(devlink, 0, param_item,
8039 DEVLINK_CMD_PARAM_NEW);
8042 EXPORT_SYMBOL_GPL(devlink_params_publish);
8045 * devlink_params_unpublish - unpublish configuration parameters
8049 * Unpublish previously registered configuration parameters.
8051 void devlink_params_unpublish(struct devlink *devlink)
8053 struct devlink_param_item *param_item;
8055 list_for_each_entry(param_item, &devlink->param_list, list) {
8056 if (!param_item->published)
8058 param_item->published = false;
8059 devlink_param_notify(devlink, 0, param_item,
8060 DEVLINK_CMD_PARAM_DEL);
8063 EXPORT_SYMBOL_GPL(devlink_params_unpublish);
8066 * devlink_port_params_register - register port configuration parameters
8068 * @devlink_port: devlink port
8069 * @params: configuration parameters array
8070 * @params_count: number of parameters provided
8072 * Register the configuration parameters supported by the port.
8074 int devlink_port_params_register(struct devlink_port *devlink_port,
8075 const struct devlink_param *params,
8076 size_t params_count)
8078 return __devlink_params_register(devlink_port->devlink,
8079 devlink_port->index,
8080 &devlink_port->param_list, params,
8082 DEVLINK_CMD_PORT_PARAM_NEW,
8083 DEVLINK_CMD_PORT_PARAM_DEL);
8085 EXPORT_SYMBOL_GPL(devlink_port_params_register);
8088 * devlink_port_params_unregister - unregister port configuration
8091 * @devlink_port: devlink port
8092 * @params: configuration parameters array
8093 * @params_count: number of parameters provided
8095 void devlink_port_params_unregister(struct devlink_port *devlink_port,
8096 const struct devlink_param *params,
8097 size_t params_count)
8099 return __devlink_params_unregister(devlink_port->devlink,
8100 devlink_port->index,
8101 &devlink_port->param_list,
8102 params, params_count,
8103 DEVLINK_CMD_PORT_PARAM_DEL);
8105 EXPORT_SYMBOL_GPL(devlink_port_params_unregister);
8108 __devlink_param_driverinit_value_get(struct list_head *param_list, u32 param_id,
8109 union devlink_param_value *init_val)
8111 struct devlink_param_item *param_item;
8113 param_item = devlink_param_find_by_id(param_list, param_id);
8117 if (!param_item->driverinit_value_valid ||
8118 !devlink_param_cmode_is_supported(param_item->param,
8119 DEVLINK_PARAM_CMODE_DRIVERINIT))
8122 if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
8123 strcpy(init_val->vstr, param_item->driverinit_value.vstr);
8125 *init_val = param_item->driverinit_value;
8131 __devlink_param_driverinit_value_set(struct devlink *devlink,
8132 unsigned int port_index,
8133 struct list_head *param_list, u32 param_id,
8134 union devlink_param_value init_val,
8135 enum devlink_command cmd)
8137 struct devlink_param_item *param_item;
8139 param_item = devlink_param_find_by_id(param_list, param_id);
8143 if (!devlink_param_cmode_is_supported(param_item->param,
8144 DEVLINK_PARAM_CMODE_DRIVERINIT))
8147 if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
8148 strcpy(param_item->driverinit_value.vstr, init_val.vstr);
8150 param_item->driverinit_value = init_val;
8151 param_item->driverinit_value_valid = true;
8153 devlink_param_notify(devlink, port_index, param_item, cmd);
8158 * devlink_param_driverinit_value_get - get configuration parameter
8159 * value for driver initializing
8162 * @param_id: parameter ID
8163 * @init_val: value of parameter in driverinit configuration mode
8165 * This function should be used by the driver to get driverinit
8166 * configuration for initialization after reload command.
8168 int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
8169 union devlink_param_value *init_val)
8171 if (!devlink_reload_supported(devlink))
8174 return __devlink_param_driverinit_value_get(&devlink->param_list,
8175 param_id, init_val);
8177 EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_get);
8180 * devlink_param_driverinit_value_set - set value of configuration
8181 * parameter for driverinit
8182 * configuration mode
8185 * @param_id: parameter ID
8186 * @init_val: value of parameter to set for driverinit configuration mode
8188 * This function should be used by the driver to set driverinit
8189 * configuration mode default value.
8191 int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
8192 union devlink_param_value init_val)
8194 return __devlink_param_driverinit_value_set(devlink, 0,
8195 &devlink->param_list,
8197 DEVLINK_CMD_PARAM_NEW);
8199 EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_set);
8202 * devlink_port_param_driverinit_value_get - get configuration parameter
8203 * value for driver initializing
8205 * @devlink_port: devlink_port
8206 * @param_id: parameter ID
8207 * @init_val: value of parameter in driverinit configuration mode
8209 * This function should be used by the driver to get driverinit
8210 * configuration for initialization after reload command.
8212 int devlink_port_param_driverinit_value_get(struct devlink_port *devlink_port,
8214 union devlink_param_value *init_val)
8216 struct devlink *devlink = devlink_port->devlink;
8218 if (!devlink_reload_supported(devlink))
8221 return __devlink_param_driverinit_value_get(&devlink_port->param_list,
8222 param_id, init_val);
8224 EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_get);
8227 * devlink_port_param_driverinit_value_set - set value of configuration
8228 * parameter for driverinit
8229 * configuration mode
8231 * @devlink_port: devlink_port
8232 * @param_id: parameter ID
8233 * @init_val: value of parameter to set for driverinit configuration mode
8235 * This function should be used by the driver to set driverinit
8236 * configuration mode default value.
8238 int devlink_port_param_driverinit_value_set(struct devlink_port *devlink_port,
8240 union devlink_param_value init_val)
8242 return __devlink_param_driverinit_value_set(devlink_port->devlink,
8243 devlink_port->index,
8244 &devlink_port->param_list,
8246 DEVLINK_CMD_PORT_PARAM_NEW);
8248 EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_set);
8251 * devlink_param_value_changed - notify devlink on a parameter's value
8252 * change. Should be called by the driver
8253 * right after the change.
8256 * @param_id: parameter ID
8258 * This function should be used by the driver to notify devlink on value
8259 * change, excluding driverinit configuration mode.
8260 * For driverinit configuration mode driver should use the function
8262 void devlink_param_value_changed(struct devlink *devlink, u32 param_id)
8264 struct devlink_param_item *param_item;
8266 param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
8267 WARN_ON(!param_item);
8269 devlink_param_notify(devlink, 0, param_item, DEVLINK_CMD_PARAM_NEW);
8271 EXPORT_SYMBOL_GPL(devlink_param_value_changed);
8274 * devlink_port_param_value_changed - notify devlink on a parameter's value
8275 * change. Should be called by the driver
8276 * right after the change.
8278 * @devlink_port: devlink_port
8279 * @param_id: parameter ID
8281 * This function should be used by the driver to notify devlink on value
8282 * change, excluding driverinit configuration mode.
8283 * For driverinit configuration mode driver should use the function
8284 * devlink_port_param_driverinit_value_set() instead.
8286 void devlink_port_param_value_changed(struct devlink_port *devlink_port,
8289 struct devlink_param_item *param_item;
8291 param_item = devlink_param_find_by_id(&devlink_port->param_list,
8293 WARN_ON(!param_item);
8295 devlink_param_notify(devlink_port->devlink, devlink_port->index,
8296 param_item, DEVLINK_CMD_PORT_PARAM_NEW);
8298 EXPORT_SYMBOL_GPL(devlink_port_param_value_changed);
8301 * devlink_param_value_str_fill - Safely fill-up the string preventing
8302 * from overflow of the preallocated buffer
8304 * @dst_val: destination devlink_param_value
8305 * @src: source buffer
8307 void devlink_param_value_str_fill(union devlink_param_value *dst_val,
8312 len = strlcpy(dst_val->vstr, src, __DEVLINK_PARAM_MAX_STRING_VALUE);
8313 WARN_ON(len >= __DEVLINK_PARAM_MAX_STRING_VALUE);
8315 EXPORT_SYMBOL_GPL(devlink_param_value_str_fill);
8318 * devlink_region_create - create a new address region
8321 * @ops: region operations and name
8322 * @region_max_snapshots: Maximum supported number of snapshots for region
8323 * @region_size: size of region
8325 struct devlink_region *
8326 devlink_region_create(struct devlink *devlink,
8327 const struct devlink_region_ops *ops,
8328 u32 region_max_snapshots, u64 region_size)
8330 struct devlink_region *region;
8333 if (WARN_ON(!ops) || WARN_ON(!ops->destructor))
8334 return ERR_PTR(-EINVAL);
8336 mutex_lock(&devlink->lock);
8338 if (devlink_region_get_by_name(devlink, ops->name)) {
8343 region = kzalloc(sizeof(*region), GFP_KERNEL);
8349 region->devlink = devlink;
8350 region->max_snapshots = region_max_snapshots;
8352 region->size = region_size;
8353 INIT_LIST_HEAD(®ion->snapshot_list);
8354 list_add_tail(®ion->list, &devlink->region_list);
8355 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
8357 mutex_unlock(&devlink->lock);
8361 mutex_unlock(&devlink->lock);
8362 return ERR_PTR(err);
8364 EXPORT_SYMBOL_GPL(devlink_region_create);
8367 * devlink_region_destroy - destroy address region
8369 * @region: devlink region to destroy
8371 void devlink_region_destroy(struct devlink_region *region)
8373 struct devlink *devlink = region->devlink;
8374 struct devlink_snapshot *snapshot, *ts;
8376 mutex_lock(&devlink->lock);
8378 /* Free all snapshots of region */
8379 list_for_each_entry_safe(snapshot, ts, ®ion->snapshot_list, list)
8380 devlink_region_snapshot_del(region, snapshot);
8382 list_del(®ion->list);
8384 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL);
8385 mutex_unlock(&devlink->lock);
8388 EXPORT_SYMBOL_GPL(devlink_region_destroy);
8391 * devlink_region_snapshot_id_get - get snapshot ID
8393 * This callback should be called when adding a new snapshot,
8394 * Driver should use the same id for multiple snapshots taken
8395 * on multiple regions at the same time/by the same trigger.
8397 * The caller of this function must use devlink_region_snapshot_id_put
8398 * when finished creating regions using this id.
8400 * Returns zero on success, or a negative error code on failure.
8403 * @id: storage to return id
8405 int devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id)
8409 mutex_lock(&devlink->lock);
8410 err = __devlink_region_snapshot_id_get(devlink, id);
8411 mutex_unlock(&devlink->lock);
8415 EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_get);
8418 * devlink_region_snapshot_id_put - put snapshot ID reference
8420 * This should be called by a driver after finishing creating snapshots
8421 * with an id. Doing so ensures that the ID can later be released in the
8422 * event that all snapshots using it have been destroyed.
8425 * @id: id to release reference on
8427 void devlink_region_snapshot_id_put(struct devlink *devlink, u32 id)
8429 mutex_lock(&devlink->lock);
8430 __devlink_snapshot_id_decrement(devlink, id);
8431 mutex_unlock(&devlink->lock);
8433 EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_put);
8436 * devlink_region_snapshot_create - create a new snapshot
8437 * This will add a new snapshot of a region. The snapshot
8438 * will be stored on the region struct and can be accessed
8439 * from devlink. This is useful for future analyses of snapshots.
8440 * Multiple snapshots can be created on a region.
8441 * The @snapshot_id should be obtained using the getter function.
8443 * @region: devlink region of the snapshot
8444 * @data: snapshot data
8445 * @snapshot_id: snapshot id to be created
8447 int devlink_region_snapshot_create(struct devlink_region *region,
8448 u8 *data, u32 snapshot_id)
8450 struct devlink *devlink = region->devlink;
8453 mutex_lock(&devlink->lock);
8454 err = __devlink_region_snapshot_create(region, data, snapshot_id);
8455 mutex_unlock(&devlink->lock);
8459 EXPORT_SYMBOL_GPL(devlink_region_snapshot_create);
8461 #define DEVLINK_TRAP(_id, _type) \
8463 .type = DEVLINK_TRAP_TYPE_##_type, \
8464 .id = DEVLINK_TRAP_GENERIC_ID_##_id, \
8465 .name = DEVLINK_TRAP_GENERIC_NAME_##_id, \
8468 static const struct devlink_trap devlink_trap_generic[] = {
8469 DEVLINK_TRAP(SMAC_MC, DROP),
8470 DEVLINK_TRAP(VLAN_TAG_MISMATCH, DROP),
8471 DEVLINK_TRAP(INGRESS_VLAN_FILTER, DROP),
8472 DEVLINK_TRAP(INGRESS_STP_FILTER, DROP),
8473 DEVLINK_TRAP(EMPTY_TX_LIST, DROP),
8474 DEVLINK_TRAP(PORT_LOOPBACK_FILTER, DROP),
8475 DEVLINK_TRAP(BLACKHOLE_ROUTE, DROP),
8476 DEVLINK_TRAP(TTL_ERROR, EXCEPTION),
8477 DEVLINK_TRAP(TAIL_DROP, DROP),
8478 DEVLINK_TRAP(NON_IP_PACKET, DROP),
8479 DEVLINK_TRAP(UC_DIP_MC_DMAC, DROP),
8480 DEVLINK_TRAP(DIP_LB, DROP),
8481 DEVLINK_TRAP(SIP_MC, DROP),
8482 DEVLINK_TRAP(SIP_LB, DROP),
8483 DEVLINK_TRAP(CORRUPTED_IP_HDR, DROP),
8484 DEVLINK_TRAP(IPV4_SIP_BC, DROP),
8485 DEVLINK_TRAP(IPV6_MC_DIP_RESERVED_SCOPE, DROP),
8486 DEVLINK_TRAP(IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE, DROP),
8487 DEVLINK_TRAP(MTU_ERROR, EXCEPTION),
8488 DEVLINK_TRAP(UNRESOLVED_NEIGH, EXCEPTION),
8489 DEVLINK_TRAP(RPF, EXCEPTION),
8490 DEVLINK_TRAP(REJECT_ROUTE, EXCEPTION),
8491 DEVLINK_TRAP(IPV4_LPM_UNICAST_MISS, EXCEPTION),
8492 DEVLINK_TRAP(IPV6_LPM_UNICAST_MISS, EXCEPTION),
8493 DEVLINK_TRAP(NON_ROUTABLE, DROP),
8494 DEVLINK_TRAP(DECAP_ERROR, EXCEPTION),
8495 DEVLINK_TRAP(OVERLAY_SMAC_MC, DROP),
8496 DEVLINK_TRAP(INGRESS_FLOW_ACTION_DROP, DROP),
8497 DEVLINK_TRAP(EGRESS_FLOW_ACTION_DROP, DROP),
8498 DEVLINK_TRAP(STP, CONTROL),
8499 DEVLINK_TRAP(LACP, CONTROL),
8500 DEVLINK_TRAP(LLDP, CONTROL),
8501 DEVLINK_TRAP(IGMP_QUERY, CONTROL),
8502 DEVLINK_TRAP(IGMP_V1_REPORT, CONTROL),
8503 DEVLINK_TRAP(IGMP_V2_REPORT, CONTROL),
8504 DEVLINK_TRAP(IGMP_V3_REPORT, CONTROL),
8505 DEVLINK_TRAP(IGMP_V2_LEAVE, CONTROL),
8506 DEVLINK_TRAP(MLD_QUERY, CONTROL),
8507 DEVLINK_TRAP(MLD_V1_REPORT, CONTROL),
8508 DEVLINK_TRAP(MLD_V2_REPORT, CONTROL),
8509 DEVLINK_TRAP(MLD_V1_DONE, CONTROL),
8510 DEVLINK_TRAP(IPV4_DHCP, CONTROL),
8511 DEVLINK_TRAP(IPV6_DHCP, CONTROL),
8512 DEVLINK_TRAP(ARP_REQUEST, CONTROL),
8513 DEVLINK_TRAP(ARP_RESPONSE, CONTROL),
8514 DEVLINK_TRAP(ARP_OVERLAY, CONTROL),
8515 DEVLINK_TRAP(IPV6_NEIGH_SOLICIT, CONTROL),
8516 DEVLINK_TRAP(IPV6_NEIGH_ADVERT, CONTROL),
8517 DEVLINK_TRAP(IPV4_BFD, CONTROL),
8518 DEVLINK_TRAP(IPV6_BFD, CONTROL),
8519 DEVLINK_TRAP(IPV4_OSPF, CONTROL),
8520 DEVLINK_TRAP(IPV6_OSPF, CONTROL),
8521 DEVLINK_TRAP(IPV4_BGP, CONTROL),
8522 DEVLINK_TRAP(IPV6_BGP, CONTROL),
8523 DEVLINK_TRAP(IPV4_VRRP, CONTROL),
8524 DEVLINK_TRAP(IPV6_VRRP, CONTROL),
8525 DEVLINK_TRAP(IPV4_PIM, CONTROL),
8526 DEVLINK_TRAP(IPV6_PIM, CONTROL),
8527 DEVLINK_TRAP(UC_LB, CONTROL),
8528 DEVLINK_TRAP(LOCAL_ROUTE, CONTROL),
8529 DEVLINK_TRAP(EXTERNAL_ROUTE, CONTROL),
8530 DEVLINK_TRAP(IPV6_UC_DIP_LINK_LOCAL_SCOPE, CONTROL),
8531 DEVLINK_TRAP(IPV6_DIP_ALL_NODES, CONTROL),
8532 DEVLINK_TRAP(IPV6_DIP_ALL_ROUTERS, CONTROL),
8533 DEVLINK_TRAP(IPV6_ROUTER_SOLICIT, CONTROL),
8534 DEVLINK_TRAP(IPV6_ROUTER_ADVERT, CONTROL),
8535 DEVLINK_TRAP(IPV6_REDIRECT, CONTROL),
8536 DEVLINK_TRAP(IPV4_ROUTER_ALERT, CONTROL),
8537 DEVLINK_TRAP(IPV6_ROUTER_ALERT, CONTROL),
8538 DEVLINK_TRAP(PTP_EVENT, CONTROL),
8539 DEVLINK_TRAP(PTP_GENERAL, CONTROL),
8540 DEVLINK_TRAP(FLOW_ACTION_SAMPLE, CONTROL),
8541 DEVLINK_TRAP(FLOW_ACTION_TRAP, CONTROL),
8544 #define DEVLINK_TRAP_GROUP(_id) \
8546 .id = DEVLINK_TRAP_GROUP_GENERIC_ID_##_id, \
8547 .name = DEVLINK_TRAP_GROUP_GENERIC_NAME_##_id, \
8550 static const struct devlink_trap_group devlink_trap_group_generic[] = {
8551 DEVLINK_TRAP_GROUP(L2_DROPS),
8552 DEVLINK_TRAP_GROUP(L3_DROPS),
8553 DEVLINK_TRAP_GROUP(L3_EXCEPTIONS),
8554 DEVLINK_TRAP_GROUP(BUFFER_DROPS),
8555 DEVLINK_TRAP_GROUP(TUNNEL_DROPS),
8556 DEVLINK_TRAP_GROUP(ACL_DROPS),
8557 DEVLINK_TRAP_GROUP(STP),
8558 DEVLINK_TRAP_GROUP(LACP),
8559 DEVLINK_TRAP_GROUP(LLDP),
8560 DEVLINK_TRAP_GROUP(MC_SNOOPING),
8561 DEVLINK_TRAP_GROUP(DHCP),
8562 DEVLINK_TRAP_GROUP(NEIGH_DISCOVERY),
8563 DEVLINK_TRAP_GROUP(BFD),
8564 DEVLINK_TRAP_GROUP(OSPF),
8565 DEVLINK_TRAP_GROUP(BGP),
8566 DEVLINK_TRAP_GROUP(VRRP),
8567 DEVLINK_TRAP_GROUP(PIM),
8568 DEVLINK_TRAP_GROUP(UC_LB),
8569 DEVLINK_TRAP_GROUP(LOCAL_DELIVERY),
8570 DEVLINK_TRAP_GROUP(IPV6),
8571 DEVLINK_TRAP_GROUP(PTP_EVENT),
8572 DEVLINK_TRAP_GROUP(PTP_GENERAL),
8573 DEVLINK_TRAP_GROUP(ACL_SAMPLE),
8574 DEVLINK_TRAP_GROUP(ACL_TRAP),
8577 static int devlink_trap_generic_verify(const struct devlink_trap *trap)
8579 if (trap->id > DEVLINK_TRAP_GENERIC_ID_MAX)
8582 if (strcmp(trap->name, devlink_trap_generic[trap->id].name))
8585 if (trap->type != devlink_trap_generic[trap->id].type)
8591 static int devlink_trap_driver_verify(const struct devlink_trap *trap)
8595 if (trap->id <= DEVLINK_TRAP_GENERIC_ID_MAX)
8598 for (i = 0; i < ARRAY_SIZE(devlink_trap_generic); i++) {
8599 if (!strcmp(trap->name, devlink_trap_generic[i].name))
8606 static int devlink_trap_verify(const struct devlink_trap *trap)
8608 if (!trap || !trap->name)
8612 return devlink_trap_generic_verify(trap);
8614 return devlink_trap_driver_verify(trap);
8618 devlink_trap_group_generic_verify(const struct devlink_trap_group *group)
8620 if (group->id > DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
8623 if (strcmp(group->name, devlink_trap_group_generic[group->id].name))
8630 devlink_trap_group_driver_verify(const struct devlink_trap_group *group)
8634 if (group->id <= DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
8637 for (i = 0; i < ARRAY_SIZE(devlink_trap_group_generic); i++) {
8638 if (!strcmp(group->name, devlink_trap_group_generic[i].name))
8645 static int devlink_trap_group_verify(const struct devlink_trap_group *group)
8648 return devlink_trap_group_generic_verify(group);
8650 return devlink_trap_group_driver_verify(group);
8654 devlink_trap_group_notify(struct devlink *devlink,
8655 const struct devlink_trap_group_item *group_item,
8656 enum devlink_command cmd)
8658 struct sk_buff *msg;
8661 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_GROUP_NEW &&
8662 cmd != DEVLINK_CMD_TRAP_GROUP_DEL);
8664 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8668 err = devlink_nl_trap_group_fill(msg, devlink, group_item, cmd, 0, 0,
8675 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
8676 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
8680 devlink_trap_item_group_link(struct devlink *devlink,
8681 struct devlink_trap_item *trap_item)
8683 u16 group_id = trap_item->trap->init_group_id;
8684 struct devlink_trap_group_item *group_item;
8686 group_item = devlink_trap_group_item_lookup_by_id(devlink, group_id);
8687 if (WARN_ON_ONCE(!group_item))
8690 trap_item->group_item = group_item;
8695 static void devlink_trap_notify(struct devlink *devlink,
8696 const struct devlink_trap_item *trap_item,
8697 enum devlink_command cmd)
8699 struct sk_buff *msg;
8702 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_NEW &&
8703 cmd != DEVLINK_CMD_TRAP_DEL);
8705 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8709 err = devlink_nl_trap_fill(msg, devlink, trap_item, cmd, 0, 0, 0);
8715 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
8716 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
8720 devlink_trap_register(struct devlink *devlink,
8721 const struct devlink_trap *trap, void *priv)
8723 struct devlink_trap_item *trap_item;
8726 if (devlink_trap_item_lookup(devlink, trap->name))
8729 trap_item = kzalloc(sizeof(*trap_item), GFP_KERNEL);
8733 trap_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
8734 if (!trap_item->stats) {
8736 goto err_stats_alloc;
8739 trap_item->trap = trap;
8740 trap_item->action = trap->init_action;
8741 trap_item->priv = priv;
8743 err = devlink_trap_item_group_link(devlink, trap_item);
8745 goto err_group_link;
8747 err = devlink->ops->trap_init(devlink, trap, trap_item);
8751 list_add_tail(&trap_item->list, &devlink->trap_list);
8752 devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_NEW);
8758 free_percpu(trap_item->stats);
8764 static void devlink_trap_unregister(struct devlink *devlink,
8765 const struct devlink_trap *trap)
8767 struct devlink_trap_item *trap_item;
8769 trap_item = devlink_trap_item_lookup(devlink, trap->name);
8770 if (WARN_ON_ONCE(!trap_item))
8773 devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_DEL);
8774 list_del(&trap_item->list);
8775 if (devlink->ops->trap_fini)
8776 devlink->ops->trap_fini(devlink, trap, trap_item);
8777 free_percpu(trap_item->stats);
8781 static void devlink_trap_disable(struct devlink *devlink,
8782 const struct devlink_trap *trap)
8784 struct devlink_trap_item *trap_item;
8786 trap_item = devlink_trap_item_lookup(devlink, trap->name);
8787 if (WARN_ON_ONCE(!trap_item))
8790 devlink->ops->trap_action_set(devlink, trap, DEVLINK_TRAP_ACTION_DROP);
8791 trap_item->action = DEVLINK_TRAP_ACTION_DROP;
8795 * devlink_traps_register - Register packet traps with devlink.
8796 * @devlink: devlink.
8797 * @traps: Packet traps.
8798 * @traps_count: Count of provided packet traps.
8799 * @priv: Driver private information.
8801 * Return: Non-zero value on failure.
8803 int devlink_traps_register(struct devlink *devlink,
8804 const struct devlink_trap *traps,
8805 size_t traps_count, void *priv)
8809 if (!devlink->ops->trap_init || !devlink->ops->trap_action_set)
8812 mutex_lock(&devlink->lock);
8813 for (i = 0; i < traps_count; i++) {
8814 const struct devlink_trap *trap = &traps[i];
8816 err = devlink_trap_verify(trap);
8818 goto err_trap_verify;
8820 err = devlink_trap_register(devlink, trap, priv);
8822 goto err_trap_register;
8824 mutex_unlock(&devlink->lock);
8830 for (i--; i >= 0; i--)
8831 devlink_trap_unregister(devlink, &traps[i]);
8832 mutex_unlock(&devlink->lock);
8835 EXPORT_SYMBOL_GPL(devlink_traps_register);
8838 * devlink_traps_unregister - Unregister packet traps from devlink.
8839 * @devlink: devlink.
8840 * @traps: Packet traps.
8841 * @traps_count: Count of provided packet traps.
8843 void devlink_traps_unregister(struct devlink *devlink,
8844 const struct devlink_trap *traps,
8849 mutex_lock(&devlink->lock);
8850 /* Make sure we do not have any packets in-flight while unregistering
8851 * traps by disabling all of them and waiting for a grace period.
8853 for (i = traps_count - 1; i >= 0; i--)
8854 devlink_trap_disable(devlink, &traps[i]);
8856 for (i = traps_count - 1; i >= 0; i--)
8857 devlink_trap_unregister(devlink, &traps[i]);
8858 mutex_unlock(&devlink->lock);
8860 EXPORT_SYMBOL_GPL(devlink_traps_unregister);
8863 devlink_trap_stats_update(struct devlink_stats __percpu *trap_stats,
8866 struct devlink_stats *stats;
8868 stats = this_cpu_ptr(trap_stats);
8869 u64_stats_update_begin(&stats->syncp);
8870 stats->rx_bytes += skb_len;
8871 stats->rx_packets++;
8872 u64_stats_update_end(&stats->syncp);
8876 devlink_trap_report_metadata_fill(struct net_dm_hw_metadata *hw_metadata,
8877 const struct devlink_trap_item *trap_item,
8878 struct devlink_port *in_devlink_port,
8879 const struct flow_action_cookie *fa_cookie)
8881 struct devlink_trap_group_item *group_item = trap_item->group_item;
8883 hw_metadata->trap_group_name = group_item->group->name;
8884 hw_metadata->trap_name = trap_item->trap->name;
8885 hw_metadata->fa_cookie = fa_cookie;
8887 spin_lock(&in_devlink_port->type_lock);
8888 if (in_devlink_port->type == DEVLINK_PORT_TYPE_ETH)
8889 hw_metadata->input_dev = in_devlink_port->type_dev;
8890 spin_unlock(&in_devlink_port->type_lock);
8894 * devlink_trap_report - Report trapped packet to drop monitor.
8895 * @devlink: devlink.
8896 * @skb: Trapped packet.
8897 * @trap_ctx: Trap context.
8898 * @in_devlink_port: Input devlink port.
8899 * @fa_cookie: Flow action cookie. Could be NULL.
8901 void devlink_trap_report(struct devlink *devlink, struct sk_buff *skb,
8902 void *trap_ctx, struct devlink_port *in_devlink_port,
8903 const struct flow_action_cookie *fa_cookie)
8906 struct devlink_trap_item *trap_item = trap_ctx;
8907 struct net_dm_hw_metadata hw_metadata = {};
8909 devlink_trap_stats_update(trap_item->stats, skb->len);
8910 devlink_trap_stats_update(trap_item->group_item->stats, skb->len);
8912 /* Control packets were not dropped by the device or encountered an
8913 * exception during forwarding and therefore should not be reported to
8914 * the kernel's drop monitor.
8916 if (trap_item->trap->type == DEVLINK_TRAP_TYPE_CONTROL)
8919 devlink_trap_report_metadata_fill(&hw_metadata, trap_item,
8920 in_devlink_port, fa_cookie);
8921 net_dm_hw_report(skb, &hw_metadata);
8923 EXPORT_SYMBOL_GPL(devlink_trap_report);
8926 * devlink_trap_ctx_priv - Trap context to driver private information.
8927 * @trap_ctx: Trap context.
8929 * Return: Driver private information passed during registration.
8931 void *devlink_trap_ctx_priv(void *trap_ctx)
8933 struct devlink_trap_item *trap_item = trap_ctx;
8935 return trap_item->priv;
8937 EXPORT_SYMBOL_GPL(devlink_trap_ctx_priv);
8940 devlink_trap_group_item_policer_link(struct devlink *devlink,
8941 struct devlink_trap_group_item *group_item)
8943 u32 policer_id = group_item->group->init_policer_id;
8944 struct devlink_trap_policer_item *policer_item;
8946 if (policer_id == 0)
8949 policer_item = devlink_trap_policer_item_lookup(devlink, policer_id);
8950 if (WARN_ON_ONCE(!policer_item))
8953 group_item->policer_item = policer_item;
8959 devlink_trap_group_register(struct devlink *devlink,
8960 const struct devlink_trap_group *group)
8962 struct devlink_trap_group_item *group_item;
8965 if (devlink_trap_group_item_lookup(devlink, group->name))
8968 group_item = kzalloc(sizeof(*group_item), GFP_KERNEL);
8972 group_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
8973 if (!group_item->stats) {
8975 goto err_stats_alloc;
8978 group_item->group = group;
8980 err = devlink_trap_group_item_policer_link(devlink, group_item);
8982 goto err_policer_link;
8984 if (devlink->ops->trap_group_init) {
8985 err = devlink->ops->trap_group_init(devlink, group);
8987 goto err_group_init;
8990 list_add_tail(&group_item->list, &devlink->trap_group_list);
8991 devlink_trap_group_notify(devlink, group_item,
8992 DEVLINK_CMD_TRAP_GROUP_NEW);
8998 free_percpu(group_item->stats);
9005 devlink_trap_group_unregister(struct devlink *devlink,
9006 const struct devlink_trap_group *group)
9008 struct devlink_trap_group_item *group_item;
9010 group_item = devlink_trap_group_item_lookup(devlink, group->name);
9011 if (WARN_ON_ONCE(!group_item))
9014 devlink_trap_group_notify(devlink, group_item,
9015 DEVLINK_CMD_TRAP_GROUP_DEL);
9016 list_del(&group_item->list);
9017 free_percpu(group_item->stats);
9022 * devlink_trap_groups_register - Register packet trap groups with devlink.
9023 * @devlink: devlink.
9024 * @groups: Packet trap groups.
9025 * @groups_count: Count of provided packet trap groups.
9027 * Return: Non-zero value on failure.
9029 int devlink_trap_groups_register(struct devlink *devlink,
9030 const struct devlink_trap_group *groups,
9031 size_t groups_count)
9035 mutex_lock(&devlink->lock);
9036 for (i = 0; i < groups_count; i++) {
9037 const struct devlink_trap_group *group = &groups[i];
9039 err = devlink_trap_group_verify(group);
9041 goto err_trap_group_verify;
9043 err = devlink_trap_group_register(devlink, group);
9045 goto err_trap_group_register;
9047 mutex_unlock(&devlink->lock);
9051 err_trap_group_register:
9052 err_trap_group_verify:
9053 for (i--; i >= 0; i--)
9054 devlink_trap_group_unregister(devlink, &groups[i]);
9055 mutex_unlock(&devlink->lock);
9058 EXPORT_SYMBOL_GPL(devlink_trap_groups_register);
9061 * devlink_trap_groups_unregister - Unregister packet trap groups from devlink.
9062 * @devlink: devlink.
9063 * @groups: Packet trap groups.
9064 * @groups_count: Count of provided packet trap groups.
9066 void devlink_trap_groups_unregister(struct devlink *devlink,
9067 const struct devlink_trap_group *groups,
9068 size_t groups_count)
9072 mutex_lock(&devlink->lock);
9073 for (i = groups_count - 1; i >= 0; i--)
9074 devlink_trap_group_unregister(devlink, &groups[i]);
9075 mutex_unlock(&devlink->lock);
9077 EXPORT_SYMBOL_GPL(devlink_trap_groups_unregister);
9080 devlink_trap_policer_notify(struct devlink *devlink,
9081 const struct devlink_trap_policer_item *policer_item,
9082 enum devlink_command cmd)
9084 struct sk_buff *msg;
9087 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_POLICER_NEW &&
9088 cmd != DEVLINK_CMD_TRAP_POLICER_DEL);
9090 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9094 err = devlink_nl_trap_policer_fill(msg, devlink, policer_item, cmd, 0,
9101 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
9102 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
9106 devlink_trap_policer_register(struct devlink *devlink,
9107 const struct devlink_trap_policer *policer)
9109 struct devlink_trap_policer_item *policer_item;
9112 if (devlink_trap_policer_item_lookup(devlink, policer->id))
9115 policer_item = kzalloc(sizeof(*policer_item), GFP_KERNEL);
9119 policer_item->policer = policer;
9120 policer_item->rate = policer->init_rate;
9121 policer_item->burst = policer->init_burst;
9123 if (devlink->ops->trap_policer_init) {
9124 err = devlink->ops->trap_policer_init(devlink, policer);
9126 goto err_policer_init;
9129 list_add_tail(&policer_item->list, &devlink->trap_policer_list);
9130 devlink_trap_policer_notify(devlink, policer_item,
9131 DEVLINK_CMD_TRAP_POLICER_NEW);
9136 kfree(policer_item);
9141 devlink_trap_policer_unregister(struct devlink *devlink,
9142 const struct devlink_trap_policer *policer)
9144 struct devlink_trap_policer_item *policer_item;
9146 policer_item = devlink_trap_policer_item_lookup(devlink, policer->id);
9147 if (WARN_ON_ONCE(!policer_item))
9150 devlink_trap_policer_notify(devlink, policer_item,
9151 DEVLINK_CMD_TRAP_POLICER_DEL);
9152 list_del(&policer_item->list);
9153 if (devlink->ops->trap_policer_fini)
9154 devlink->ops->trap_policer_fini(devlink, policer);
9155 kfree(policer_item);
9159 * devlink_trap_policers_register - Register packet trap policers with devlink.
9160 * @devlink: devlink.
9161 * @policers: Packet trap policers.
9162 * @policers_count: Count of provided packet trap policers.
9164 * Return: Non-zero value on failure.
9167 devlink_trap_policers_register(struct devlink *devlink,
9168 const struct devlink_trap_policer *policers,
9169 size_t policers_count)
9173 mutex_lock(&devlink->lock);
9174 for (i = 0; i < policers_count; i++) {
9175 const struct devlink_trap_policer *policer = &policers[i];
9177 if (WARN_ON(policer->id == 0 ||
9178 policer->max_rate < policer->min_rate ||
9179 policer->max_burst < policer->min_burst)) {
9181 goto err_trap_policer_verify;
9184 err = devlink_trap_policer_register(devlink, policer);
9186 goto err_trap_policer_register;
9188 mutex_unlock(&devlink->lock);
9192 err_trap_policer_register:
9193 err_trap_policer_verify:
9194 for (i--; i >= 0; i--)
9195 devlink_trap_policer_unregister(devlink, &policers[i]);
9196 mutex_unlock(&devlink->lock);
9199 EXPORT_SYMBOL_GPL(devlink_trap_policers_register);
9202 * devlink_trap_policers_unregister - Unregister packet trap policers from devlink.
9203 * @devlink: devlink.
9204 * @policers: Packet trap policers.
9205 * @policers_count: Count of provided packet trap policers.
9208 devlink_trap_policers_unregister(struct devlink *devlink,
9209 const struct devlink_trap_policer *policers,
9210 size_t policers_count)
9214 mutex_lock(&devlink->lock);
9215 for (i = policers_count - 1; i >= 0; i--)
9216 devlink_trap_policer_unregister(devlink, &policers[i]);
9217 mutex_unlock(&devlink->lock);
9219 EXPORT_SYMBOL_GPL(devlink_trap_policers_unregister);
9221 static void __devlink_compat_running_version(struct devlink *devlink,
9222 char *buf, size_t len)
9224 const struct nlattr *nlattr;
9225 struct devlink_info_req req;
9226 struct sk_buff *msg;
9229 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9234 err = devlink->ops->info_get(devlink, &req, NULL);
9238 nla_for_each_attr(nlattr, (void *)msg->data, msg->len, rem) {
9239 const struct nlattr *kv;
9242 if (nla_type(nlattr) != DEVLINK_ATTR_INFO_VERSION_RUNNING)
9245 nla_for_each_nested(kv, nlattr, rem_kv) {
9246 if (nla_type(kv) != DEVLINK_ATTR_INFO_VERSION_VALUE)
9249 strlcat(buf, nla_data(kv), len);
9250 strlcat(buf, " ", len);
9257 void devlink_compat_running_version(struct net_device *dev,
9258 char *buf, size_t len)
9260 struct devlink *devlink;
9265 devlink = netdev_to_devlink(dev);
9266 if (!devlink || !devlink->ops->info_get)
9269 mutex_lock(&devlink->lock);
9270 __devlink_compat_running_version(devlink, buf, len);
9271 mutex_unlock(&devlink->lock);
9278 int devlink_compat_flash_update(struct net_device *dev, const char *file_name)
9280 struct devlink *devlink;
9286 devlink = netdev_to_devlink(dev);
9287 if (!devlink || !devlink->ops->flash_update) {
9292 mutex_lock(&devlink->lock);
9293 ret = devlink->ops->flash_update(devlink, file_name, NULL, NULL);
9294 mutex_unlock(&devlink->lock);
9303 int devlink_compat_phys_port_name_get(struct net_device *dev,
9304 char *name, size_t len)
9306 struct devlink_port *devlink_port;
9308 /* RTNL mutex is held here which ensures that devlink_port
9309 * instance cannot disappear in the middle. No need to take
9310 * any devlink lock as only permanent values are accessed.
9314 devlink_port = netdev_to_devlink_port(dev);
9318 return __devlink_port_phys_port_name_get(devlink_port, name, len);
9321 int devlink_compat_switch_id_get(struct net_device *dev,
9322 struct netdev_phys_item_id *ppid)
9324 struct devlink_port *devlink_port;
9326 /* Caller must hold RTNL mutex or reference to dev, which ensures that
9327 * devlink_port instance cannot disappear in the middle. No need to take
9328 * any devlink lock as only permanent values are accessed.
9330 devlink_port = netdev_to_devlink_port(dev);
9331 if (!devlink_port || !devlink_port->attrs.switch_port)
9334 memcpy(ppid, &devlink_port->attrs.switch_id, sizeof(*ppid));
9339 static void __net_exit devlink_pernet_pre_exit(struct net *net)
9341 struct devlink *devlink;
9344 /* In case network namespace is getting destroyed, reload
9345 * all devlink instances from this namespace into init_net.
9347 mutex_lock(&devlink_mutex);
9348 list_for_each_entry(devlink, &devlink_list, list) {
9349 if (net_eq(devlink_net(devlink), net)) {
9350 if (WARN_ON(!devlink_reload_supported(devlink)))
9352 err = devlink_reload(devlink, &init_net, NULL);
9353 if (err && err != -EOPNOTSUPP)
9354 pr_warn("Failed to reload devlink instance into init_net\n");
9357 mutex_unlock(&devlink_mutex);
9360 static struct pernet_operations devlink_pernet_ops __net_initdata = {
9361 .pre_exit = devlink_pernet_pre_exit,
9364 static int __init devlink_init(void)
9368 err = genl_register_family(&devlink_nl_family);
9371 err = register_pernet_subsys(&devlink_pernet_ops);
9378 subsys_initcall(devlink_init);