2 * net/core/devlink.c - Network physical/parent device Netlink interface
4 * Heavily inspired by net/wireless/
5 * Copyright (c) 2016 Mellanox Technologies. All rights reserved.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
14 #include <linux/kernel.h>
15 #include <linux/module.h>
16 #include <linux/types.h>
17 #include <linux/slab.h>
18 #include <linux/gfp.h>
19 #include <linux/device.h>
20 #include <linux/list.h>
21 #include <linux/netdevice.h>
22 #include <rdma/ib_verbs.h>
23 #include <net/netlink.h>
24 #include <net/genetlink.h>
25 #include <net/rtnetlink.h>
26 #include <net/net_namespace.h>
28 #include <net/devlink.h>
29 #define CREATE_TRACE_POINTS
30 #include <trace/events/devlink.h>
32 EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwmsg);
34 static LIST_HEAD(devlink_list);
38 * An overall lock guarding every operation coming from userspace.
39 * It also guards devlink devices list and it is taken when
40 * driver registers/unregisters it.
42 static DEFINE_MUTEX(devlink_mutex);
46 * Shared lock to guard lists of ports in all devlink devices.
48 static DEFINE_MUTEX(devlink_port_mutex);
50 static struct net *devlink_net(const struct devlink *devlink)
52 return read_pnet(&devlink->_net);
55 static void devlink_net_set(struct devlink *devlink, struct net *net)
57 write_pnet(&devlink->_net, net);
60 static struct devlink *devlink_get_from_attrs(struct net *net,
61 struct nlattr **attrs)
63 struct devlink *devlink;
67 if (!attrs[DEVLINK_ATTR_BUS_NAME] || !attrs[DEVLINK_ATTR_DEV_NAME])
68 return ERR_PTR(-EINVAL);
70 busname = nla_data(attrs[DEVLINK_ATTR_BUS_NAME]);
71 devname = nla_data(attrs[DEVLINK_ATTR_DEV_NAME]);
73 list_for_each_entry(devlink, &devlink_list, list) {
74 if (strcmp(devlink->dev->bus->name, busname) == 0 &&
75 strcmp(dev_name(devlink->dev), devname) == 0 &&
76 net_eq(devlink_net(devlink), net))
80 return ERR_PTR(-ENODEV);
83 static struct devlink *devlink_get_from_info(struct genl_info *info)
85 return devlink_get_from_attrs(genl_info_net(info), info->attrs);
88 static struct devlink_port *devlink_port_get_by_index(struct devlink *devlink,
91 struct devlink_port *devlink_port;
93 list_for_each_entry(devlink_port, &devlink->port_list, list) {
94 if (devlink_port->index == port_index)
100 static bool devlink_port_index_exists(struct devlink *devlink, int port_index)
102 return devlink_port_get_by_index(devlink, port_index);
105 static struct devlink_port *devlink_port_get_from_attrs(struct devlink *devlink,
106 struct nlattr **attrs)
108 if (attrs[DEVLINK_ATTR_PORT_INDEX]) {
109 u32 port_index = nla_get_u32(attrs[DEVLINK_ATTR_PORT_INDEX]);
110 struct devlink_port *devlink_port;
112 devlink_port = devlink_port_get_by_index(devlink, port_index);
114 return ERR_PTR(-ENODEV);
117 return ERR_PTR(-EINVAL);
120 static struct devlink_port *devlink_port_get_from_info(struct devlink *devlink,
121 struct genl_info *info)
123 return devlink_port_get_from_attrs(devlink, info->attrs);
127 struct list_head list;
130 u16 ingress_pools_count;
131 u16 egress_pools_count;
132 u16 ingress_tc_count;
136 static u16 devlink_sb_pool_count(struct devlink_sb *devlink_sb)
138 return devlink_sb->ingress_pools_count + devlink_sb->egress_pools_count;
141 static struct devlink_sb *devlink_sb_get_by_index(struct devlink *devlink,
142 unsigned int sb_index)
144 struct devlink_sb *devlink_sb;
146 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
147 if (devlink_sb->index == sb_index)
153 static bool devlink_sb_index_exists(struct devlink *devlink,
154 unsigned int sb_index)
156 return devlink_sb_get_by_index(devlink, sb_index);
159 static struct devlink_sb *devlink_sb_get_from_attrs(struct devlink *devlink,
160 struct nlattr **attrs)
162 if (attrs[DEVLINK_ATTR_SB_INDEX]) {
163 u32 sb_index = nla_get_u32(attrs[DEVLINK_ATTR_SB_INDEX]);
164 struct devlink_sb *devlink_sb;
166 devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
168 return ERR_PTR(-ENODEV);
171 return ERR_PTR(-EINVAL);
174 static struct devlink_sb *devlink_sb_get_from_info(struct devlink *devlink,
175 struct genl_info *info)
177 return devlink_sb_get_from_attrs(devlink, info->attrs);
180 static int devlink_sb_pool_index_get_from_attrs(struct devlink_sb *devlink_sb,
181 struct nlattr **attrs,
186 if (!attrs[DEVLINK_ATTR_SB_POOL_INDEX])
189 val = nla_get_u16(attrs[DEVLINK_ATTR_SB_POOL_INDEX]);
190 if (val >= devlink_sb_pool_count(devlink_sb))
196 static int devlink_sb_pool_index_get_from_info(struct devlink_sb *devlink_sb,
197 struct genl_info *info,
200 return devlink_sb_pool_index_get_from_attrs(devlink_sb, info->attrs,
205 devlink_sb_pool_type_get_from_attrs(struct nlattr **attrs,
206 enum devlink_sb_pool_type *p_pool_type)
210 if (!attrs[DEVLINK_ATTR_SB_POOL_TYPE])
213 val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_TYPE]);
214 if (val != DEVLINK_SB_POOL_TYPE_INGRESS &&
215 val != DEVLINK_SB_POOL_TYPE_EGRESS)
222 devlink_sb_pool_type_get_from_info(struct genl_info *info,
223 enum devlink_sb_pool_type *p_pool_type)
225 return devlink_sb_pool_type_get_from_attrs(info->attrs, p_pool_type);
229 devlink_sb_th_type_get_from_attrs(struct nlattr **attrs,
230 enum devlink_sb_threshold_type *p_th_type)
234 if (!attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE])
237 val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE]);
238 if (val != DEVLINK_SB_THRESHOLD_TYPE_STATIC &&
239 val != DEVLINK_SB_THRESHOLD_TYPE_DYNAMIC)
246 devlink_sb_th_type_get_from_info(struct genl_info *info,
247 enum devlink_sb_threshold_type *p_th_type)
249 return devlink_sb_th_type_get_from_attrs(info->attrs, p_th_type);
253 devlink_sb_tc_index_get_from_attrs(struct devlink_sb *devlink_sb,
254 struct nlattr **attrs,
255 enum devlink_sb_pool_type pool_type,
260 if (!attrs[DEVLINK_ATTR_SB_TC_INDEX])
263 val = nla_get_u16(attrs[DEVLINK_ATTR_SB_TC_INDEX]);
264 if (pool_type == DEVLINK_SB_POOL_TYPE_INGRESS &&
265 val >= devlink_sb->ingress_tc_count)
267 if (pool_type == DEVLINK_SB_POOL_TYPE_EGRESS &&
268 val >= devlink_sb->egress_tc_count)
275 devlink_sb_tc_index_get_from_info(struct devlink_sb *devlink_sb,
276 struct genl_info *info,
277 enum devlink_sb_pool_type pool_type,
280 return devlink_sb_tc_index_get_from_attrs(devlink_sb, info->attrs,
281 pool_type, p_tc_index);
284 #define DEVLINK_NL_FLAG_NEED_DEVLINK BIT(0)
285 #define DEVLINK_NL_FLAG_NEED_PORT BIT(1)
286 #define DEVLINK_NL_FLAG_NEED_SB BIT(2)
287 #define DEVLINK_NL_FLAG_LOCK_PORTS BIT(3)
288 /* port is not needed but we need to ensure they don't
289 * change in the middle of command
292 static int devlink_nl_pre_doit(const struct genl_ops *ops,
293 struct sk_buff *skb, struct genl_info *info)
295 struct devlink *devlink;
297 mutex_lock(&devlink_mutex);
298 devlink = devlink_get_from_info(info);
299 if (IS_ERR(devlink)) {
300 mutex_unlock(&devlink_mutex);
301 return PTR_ERR(devlink);
303 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_DEVLINK) {
304 info->user_ptr[0] = devlink;
305 } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT) {
306 struct devlink_port *devlink_port;
308 mutex_lock(&devlink_port_mutex);
309 devlink_port = devlink_port_get_from_info(devlink, info);
310 if (IS_ERR(devlink_port)) {
311 mutex_unlock(&devlink_port_mutex);
312 mutex_unlock(&devlink_mutex);
313 return PTR_ERR(devlink_port);
315 info->user_ptr[0] = devlink_port;
317 if (ops->internal_flags & DEVLINK_NL_FLAG_LOCK_PORTS) {
318 mutex_lock(&devlink_port_mutex);
320 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_SB) {
321 struct devlink_sb *devlink_sb;
323 devlink_sb = devlink_sb_get_from_info(devlink, info);
324 if (IS_ERR(devlink_sb)) {
325 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT)
326 mutex_unlock(&devlink_port_mutex);
327 mutex_unlock(&devlink_mutex);
328 return PTR_ERR(devlink_sb);
330 info->user_ptr[1] = devlink_sb;
335 static void devlink_nl_post_doit(const struct genl_ops *ops,
336 struct sk_buff *skb, struct genl_info *info)
338 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT ||
339 ops->internal_flags & DEVLINK_NL_FLAG_LOCK_PORTS)
340 mutex_unlock(&devlink_port_mutex);
341 mutex_unlock(&devlink_mutex);
344 static struct genl_family devlink_nl_family;
346 enum devlink_multicast_groups {
347 DEVLINK_MCGRP_CONFIG,
350 static const struct genl_multicast_group devlink_nl_mcgrps[] = {
351 [DEVLINK_MCGRP_CONFIG] = { .name = DEVLINK_GENL_MCGRP_CONFIG_NAME },
354 static int devlink_nl_put_handle(struct sk_buff *msg, struct devlink *devlink)
356 if (nla_put_string(msg, DEVLINK_ATTR_BUS_NAME, devlink->dev->bus->name))
358 if (nla_put_string(msg, DEVLINK_ATTR_DEV_NAME, dev_name(devlink->dev)))
363 static int devlink_nl_fill(struct sk_buff *msg, struct devlink *devlink,
364 enum devlink_command cmd, u32 portid,
369 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
373 if (devlink_nl_put_handle(msg, devlink))
374 goto nla_put_failure;
376 genlmsg_end(msg, hdr);
380 genlmsg_cancel(msg, hdr);
384 static void devlink_notify(struct devlink *devlink, enum devlink_command cmd)
389 WARN_ON(cmd != DEVLINK_CMD_NEW && cmd != DEVLINK_CMD_DEL);
391 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
395 err = devlink_nl_fill(msg, devlink, cmd, 0, 0, 0);
401 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
402 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
405 static int devlink_nl_port_fill(struct sk_buff *msg, struct devlink *devlink,
406 struct devlink_port *devlink_port,
407 enum devlink_command cmd, u32 portid,
412 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
416 if (devlink_nl_put_handle(msg, devlink))
417 goto nla_put_failure;
418 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
419 goto nla_put_failure;
420 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_TYPE, devlink_port->type))
421 goto nla_put_failure;
422 if (devlink_port->desired_type != DEVLINK_PORT_TYPE_NOTSET &&
423 nla_put_u16(msg, DEVLINK_ATTR_PORT_DESIRED_TYPE,
424 devlink_port->desired_type))
425 goto nla_put_failure;
426 if (devlink_port->type == DEVLINK_PORT_TYPE_ETH) {
427 struct net_device *netdev = devlink_port->type_dev;
430 (nla_put_u32(msg, DEVLINK_ATTR_PORT_NETDEV_IFINDEX,
432 nla_put_string(msg, DEVLINK_ATTR_PORT_NETDEV_NAME,
434 goto nla_put_failure;
436 if (devlink_port->type == DEVLINK_PORT_TYPE_IB) {
437 struct ib_device *ibdev = devlink_port->type_dev;
440 nla_put_string(msg, DEVLINK_ATTR_PORT_IBDEV_NAME,
442 goto nla_put_failure;
444 if (devlink_port->split &&
445 nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_GROUP,
446 devlink_port->split_group))
447 goto nla_put_failure;
449 genlmsg_end(msg, hdr);
453 genlmsg_cancel(msg, hdr);
457 static void devlink_port_notify(struct devlink_port *devlink_port,
458 enum devlink_command cmd)
460 struct devlink *devlink = devlink_port->devlink;
464 if (!devlink_port->registered)
467 WARN_ON(cmd != DEVLINK_CMD_PORT_NEW && cmd != DEVLINK_CMD_PORT_DEL);
469 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
473 err = devlink_nl_port_fill(msg, devlink, devlink_port, cmd, 0, 0, 0);
479 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
480 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
483 static int devlink_nl_cmd_get_doit(struct sk_buff *skb, struct genl_info *info)
485 struct devlink *devlink = info->user_ptr[0];
489 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
493 err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
494 info->snd_portid, info->snd_seq, 0);
500 return genlmsg_reply(msg, info);
503 static int devlink_nl_cmd_get_dumpit(struct sk_buff *msg,
504 struct netlink_callback *cb)
506 struct devlink *devlink;
507 int start = cb->args[0];
511 mutex_lock(&devlink_mutex);
512 list_for_each_entry(devlink, &devlink_list, list) {
513 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
519 err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
520 NETLINK_CB(cb->skb).portid,
521 cb->nlh->nlmsg_seq, NLM_F_MULTI);
527 mutex_unlock(&devlink_mutex);
533 static int devlink_nl_cmd_port_get_doit(struct sk_buff *skb,
534 struct genl_info *info)
536 struct devlink_port *devlink_port = info->user_ptr[0];
537 struct devlink *devlink = devlink_port->devlink;
541 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
545 err = devlink_nl_port_fill(msg, devlink, devlink_port,
546 DEVLINK_CMD_PORT_NEW,
547 info->snd_portid, info->snd_seq, 0);
553 return genlmsg_reply(msg, info);
556 static int devlink_nl_cmd_port_get_dumpit(struct sk_buff *msg,
557 struct netlink_callback *cb)
559 struct devlink *devlink;
560 struct devlink_port *devlink_port;
561 int start = cb->args[0];
565 mutex_lock(&devlink_mutex);
566 mutex_lock(&devlink_port_mutex);
567 list_for_each_entry(devlink, &devlink_list, list) {
568 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
570 list_for_each_entry(devlink_port, &devlink->port_list, list) {
575 err = devlink_nl_port_fill(msg, devlink, devlink_port,
577 NETLINK_CB(cb->skb).portid,
586 mutex_unlock(&devlink_port_mutex);
587 mutex_unlock(&devlink_mutex);
593 static int devlink_port_type_set(struct devlink *devlink,
594 struct devlink_port *devlink_port,
595 enum devlink_port_type port_type)
600 if (devlink->ops && devlink->ops->port_type_set) {
601 if (port_type == DEVLINK_PORT_TYPE_NOTSET)
603 if (port_type == devlink_port->type)
605 err = devlink->ops->port_type_set(devlink_port, port_type);
608 devlink_port->desired_type = port_type;
609 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
615 static int devlink_nl_cmd_port_set_doit(struct sk_buff *skb,
616 struct genl_info *info)
618 struct devlink_port *devlink_port = info->user_ptr[0];
619 struct devlink *devlink = devlink_port->devlink;
622 if (info->attrs[DEVLINK_ATTR_PORT_TYPE]) {
623 enum devlink_port_type port_type;
625 port_type = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_TYPE]);
626 err = devlink_port_type_set(devlink, devlink_port, port_type);
633 static int devlink_port_split(struct devlink *devlink,
634 u32 port_index, u32 count)
637 if (devlink->ops && devlink->ops->port_split)
638 return devlink->ops->port_split(devlink, port_index, count);
642 static int devlink_nl_cmd_port_split_doit(struct sk_buff *skb,
643 struct genl_info *info)
645 struct devlink *devlink = info->user_ptr[0];
649 if (!info->attrs[DEVLINK_ATTR_PORT_INDEX] ||
650 !info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT])
653 port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
654 count = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT]);
655 return devlink_port_split(devlink, port_index, count);
658 static int devlink_port_unsplit(struct devlink *devlink, u32 port_index)
661 if (devlink->ops && devlink->ops->port_unsplit)
662 return devlink->ops->port_unsplit(devlink, port_index);
666 static int devlink_nl_cmd_port_unsplit_doit(struct sk_buff *skb,
667 struct genl_info *info)
669 struct devlink *devlink = info->user_ptr[0];
672 if (!info->attrs[DEVLINK_ATTR_PORT_INDEX])
675 port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
676 return devlink_port_unsplit(devlink, port_index);
679 static int devlink_nl_sb_fill(struct sk_buff *msg, struct devlink *devlink,
680 struct devlink_sb *devlink_sb,
681 enum devlink_command cmd, u32 portid,
686 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
690 if (devlink_nl_put_handle(msg, devlink))
691 goto nla_put_failure;
692 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
693 goto nla_put_failure;
694 if (nla_put_u32(msg, DEVLINK_ATTR_SB_SIZE, devlink_sb->size))
695 goto nla_put_failure;
696 if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_POOL_COUNT,
697 devlink_sb->ingress_pools_count))
698 goto nla_put_failure;
699 if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_POOL_COUNT,
700 devlink_sb->egress_pools_count))
701 goto nla_put_failure;
702 if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_TC_COUNT,
703 devlink_sb->ingress_tc_count))
704 goto nla_put_failure;
705 if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_TC_COUNT,
706 devlink_sb->egress_tc_count))
707 goto nla_put_failure;
709 genlmsg_end(msg, hdr);
713 genlmsg_cancel(msg, hdr);
717 static int devlink_nl_cmd_sb_get_doit(struct sk_buff *skb,
718 struct genl_info *info)
720 struct devlink *devlink = info->user_ptr[0];
721 struct devlink_sb *devlink_sb = info->user_ptr[1];
725 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
729 err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
731 info->snd_portid, info->snd_seq, 0);
737 return genlmsg_reply(msg, info);
740 static int devlink_nl_cmd_sb_get_dumpit(struct sk_buff *msg,
741 struct netlink_callback *cb)
743 struct devlink *devlink;
744 struct devlink_sb *devlink_sb;
745 int start = cb->args[0];
749 mutex_lock(&devlink_mutex);
750 list_for_each_entry(devlink, &devlink_list, list) {
751 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
753 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
758 err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
760 NETLINK_CB(cb->skb).portid,
769 mutex_unlock(&devlink_mutex);
775 static int devlink_nl_sb_pool_fill(struct sk_buff *msg, struct devlink *devlink,
776 struct devlink_sb *devlink_sb,
777 u16 pool_index, enum devlink_command cmd,
778 u32 portid, u32 seq, int flags)
780 struct devlink_sb_pool_info pool_info;
784 err = devlink->ops->sb_pool_get(devlink, devlink_sb->index,
785 pool_index, &pool_info);
789 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
793 if (devlink_nl_put_handle(msg, devlink))
794 goto nla_put_failure;
795 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
796 goto nla_put_failure;
797 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
798 goto nla_put_failure;
799 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_info.pool_type))
800 goto nla_put_failure;
801 if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_SIZE, pool_info.size))
802 goto nla_put_failure;
803 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE,
804 pool_info.threshold_type))
805 goto nla_put_failure;
807 genlmsg_end(msg, hdr);
811 genlmsg_cancel(msg, hdr);
815 static int devlink_nl_cmd_sb_pool_get_doit(struct sk_buff *skb,
816 struct genl_info *info)
818 struct devlink *devlink = info->user_ptr[0];
819 struct devlink_sb *devlink_sb = info->user_ptr[1];
824 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
829 if (!devlink->ops || !devlink->ops->sb_pool_get)
832 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
836 err = devlink_nl_sb_pool_fill(msg, devlink, devlink_sb, pool_index,
837 DEVLINK_CMD_SB_POOL_NEW,
838 info->snd_portid, info->snd_seq, 0);
844 return genlmsg_reply(msg, info);
847 static int __sb_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
848 struct devlink *devlink,
849 struct devlink_sb *devlink_sb,
852 u16 pool_count = devlink_sb_pool_count(devlink_sb);
856 for (pool_index = 0; pool_index < pool_count; pool_index++) {
857 if (*p_idx < start) {
861 err = devlink_nl_sb_pool_fill(msg, devlink,
864 DEVLINK_CMD_SB_POOL_NEW,
865 portid, seq, NLM_F_MULTI);
873 static int devlink_nl_cmd_sb_pool_get_dumpit(struct sk_buff *msg,
874 struct netlink_callback *cb)
876 struct devlink *devlink;
877 struct devlink_sb *devlink_sb;
878 int start = cb->args[0];
882 mutex_lock(&devlink_mutex);
883 list_for_each_entry(devlink, &devlink_list, list) {
884 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
885 !devlink->ops || !devlink->ops->sb_pool_get)
887 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
888 err = __sb_pool_get_dumpit(msg, start, &idx, devlink,
890 NETLINK_CB(cb->skb).portid,
892 if (err && err != -EOPNOTSUPP)
897 mutex_unlock(&devlink_mutex);
903 static int devlink_sb_pool_set(struct devlink *devlink, unsigned int sb_index,
904 u16 pool_index, u32 size,
905 enum devlink_sb_threshold_type threshold_type)
908 const struct devlink_ops *ops = devlink->ops;
910 if (ops && ops->sb_pool_set)
911 return ops->sb_pool_set(devlink, sb_index, pool_index,
912 size, threshold_type);
916 static int devlink_nl_cmd_sb_pool_set_doit(struct sk_buff *skb,
917 struct genl_info *info)
919 struct devlink *devlink = info->user_ptr[0];
920 struct devlink_sb *devlink_sb = info->user_ptr[1];
921 enum devlink_sb_threshold_type threshold_type;
926 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
931 err = devlink_sb_th_type_get_from_info(info, &threshold_type);
935 if (!info->attrs[DEVLINK_ATTR_SB_POOL_SIZE])
938 size = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_POOL_SIZE]);
939 return devlink_sb_pool_set(devlink, devlink_sb->index,
940 pool_index, size, threshold_type);
943 static int devlink_nl_sb_port_pool_fill(struct sk_buff *msg,
944 struct devlink *devlink,
945 struct devlink_port *devlink_port,
946 struct devlink_sb *devlink_sb,
948 enum devlink_command cmd,
949 u32 portid, u32 seq, int flags)
951 const struct devlink_ops *ops = devlink->ops;
956 err = ops->sb_port_pool_get(devlink_port, devlink_sb->index,
957 pool_index, &threshold);
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_PORT_INDEX, devlink_port->index))
968 goto nla_put_failure;
969 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
970 goto nla_put_failure;
971 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
972 goto nla_put_failure;
973 if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
974 goto nla_put_failure;
976 if (ops->sb_occ_port_pool_get) {
980 err = ops->sb_occ_port_pool_get(devlink_port, devlink_sb->index,
981 pool_index, &cur, &max);
982 if (err && err != -EOPNOTSUPP)
985 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
986 goto nla_put_failure;
987 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
988 goto nla_put_failure;
992 genlmsg_end(msg, hdr);
996 genlmsg_cancel(msg, hdr);
1000 static int devlink_nl_cmd_sb_port_pool_get_doit(struct sk_buff *skb,
1001 struct genl_info *info)
1003 struct devlink_port *devlink_port = info->user_ptr[0];
1004 struct devlink *devlink = devlink_port->devlink;
1005 struct devlink_sb *devlink_sb = info->user_ptr[1];
1006 struct sk_buff *msg;
1010 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1015 if (!devlink->ops || !devlink->ops->sb_port_pool_get)
1018 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1022 err = devlink_nl_sb_port_pool_fill(msg, devlink, devlink_port,
1023 devlink_sb, pool_index,
1024 DEVLINK_CMD_SB_PORT_POOL_NEW,
1025 info->snd_portid, info->snd_seq, 0);
1031 return genlmsg_reply(msg, info);
1034 static int __sb_port_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
1035 struct devlink *devlink,
1036 struct devlink_sb *devlink_sb,
1037 u32 portid, u32 seq)
1039 struct devlink_port *devlink_port;
1040 u16 pool_count = devlink_sb_pool_count(devlink_sb);
1044 list_for_each_entry(devlink_port, &devlink->port_list, list) {
1045 for (pool_index = 0; pool_index < pool_count; pool_index++) {
1046 if (*p_idx < start) {
1050 err = devlink_nl_sb_port_pool_fill(msg, devlink,
1054 DEVLINK_CMD_SB_PORT_POOL_NEW,
1065 static int devlink_nl_cmd_sb_port_pool_get_dumpit(struct sk_buff *msg,
1066 struct netlink_callback *cb)
1068 struct devlink *devlink;
1069 struct devlink_sb *devlink_sb;
1070 int start = cb->args[0];
1074 mutex_lock(&devlink_mutex);
1075 mutex_lock(&devlink_port_mutex);
1076 list_for_each_entry(devlink, &devlink_list, list) {
1077 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
1078 !devlink->ops || !devlink->ops->sb_port_pool_get)
1080 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
1081 err = __sb_port_pool_get_dumpit(msg, start, &idx,
1082 devlink, devlink_sb,
1083 NETLINK_CB(cb->skb).portid,
1084 cb->nlh->nlmsg_seq);
1085 if (err && err != -EOPNOTSUPP)
1090 mutex_unlock(&devlink_port_mutex);
1091 mutex_unlock(&devlink_mutex);
1097 static int devlink_sb_port_pool_set(struct devlink_port *devlink_port,
1098 unsigned int sb_index, u16 pool_index,
1102 const struct devlink_ops *ops = devlink_port->devlink->ops;
1104 if (ops && ops->sb_port_pool_set)
1105 return ops->sb_port_pool_set(devlink_port, sb_index,
1106 pool_index, threshold);
1110 static int devlink_nl_cmd_sb_port_pool_set_doit(struct sk_buff *skb,
1111 struct genl_info *info)
1113 struct devlink_port *devlink_port = info->user_ptr[0];
1114 struct devlink_sb *devlink_sb = info->user_ptr[1];
1119 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1124 if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD])
1127 threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
1128 return devlink_sb_port_pool_set(devlink_port, devlink_sb->index,
1129 pool_index, threshold);
1133 devlink_nl_sb_tc_pool_bind_fill(struct sk_buff *msg, struct devlink *devlink,
1134 struct devlink_port *devlink_port,
1135 struct devlink_sb *devlink_sb, u16 tc_index,
1136 enum devlink_sb_pool_type pool_type,
1137 enum devlink_command cmd,
1138 u32 portid, u32 seq, int flags)
1140 const struct devlink_ops *ops = devlink->ops;
1146 err = ops->sb_tc_pool_bind_get(devlink_port, devlink_sb->index,
1147 tc_index, pool_type,
1148 &pool_index, &threshold);
1152 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1156 if (devlink_nl_put_handle(msg, devlink))
1157 goto nla_put_failure;
1158 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
1159 goto nla_put_failure;
1160 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
1161 goto nla_put_failure;
1162 if (nla_put_u16(msg, DEVLINK_ATTR_SB_TC_INDEX, tc_index))
1163 goto nla_put_failure;
1164 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_type))
1165 goto nla_put_failure;
1166 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
1167 goto nla_put_failure;
1168 if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
1169 goto nla_put_failure;
1171 if (ops->sb_occ_tc_port_bind_get) {
1175 err = ops->sb_occ_tc_port_bind_get(devlink_port,
1177 tc_index, pool_type,
1179 if (err && err != -EOPNOTSUPP)
1182 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
1183 goto nla_put_failure;
1184 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
1185 goto nla_put_failure;
1189 genlmsg_end(msg, hdr);
1193 genlmsg_cancel(msg, hdr);
1197 static int devlink_nl_cmd_sb_tc_pool_bind_get_doit(struct sk_buff *skb,
1198 struct genl_info *info)
1200 struct devlink_port *devlink_port = info->user_ptr[0];
1201 struct devlink *devlink = devlink_port->devlink;
1202 struct devlink_sb *devlink_sb = info->user_ptr[1];
1203 struct sk_buff *msg;
1204 enum devlink_sb_pool_type pool_type;
1208 err = devlink_sb_pool_type_get_from_info(info, &pool_type);
1212 err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
1213 pool_type, &tc_index);
1217 if (!devlink->ops || !devlink->ops->sb_tc_pool_bind_get)
1220 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1224 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink, devlink_port,
1225 devlink_sb, tc_index, pool_type,
1226 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
1234 return genlmsg_reply(msg, info);
1237 static int __sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
1238 int start, int *p_idx,
1239 struct devlink *devlink,
1240 struct devlink_sb *devlink_sb,
1241 u32 portid, u32 seq)
1243 struct devlink_port *devlink_port;
1247 list_for_each_entry(devlink_port, &devlink->port_list, list) {
1249 tc_index < devlink_sb->ingress_tc_count; tc_index++) {
1250 if (*p_idx < start) {
1254 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
1258 DEVLINK_SB_POOL_TYPE_INGRESS,
1259 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
1267 tc_index < devlink_sb->egress_tc_count; tc_index++) {
1268 if (*p_idx < start) {
1272 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
1276 DEVLINK_SB_POOL_TYPE_EGRESS,
1277 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
1289 devlink_nl_cmd_sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
1290 struct netlink_callback *cb)
1292 struct devlink *devlink;
1293 struct devlink_sb *devlink_sb;
1294 int start = cb->args[0];
1298 mutex_lock(&devlink_mutex);
1299 mutex_lock(&devlink_port_mutex);
1300 list_for_each_entry(devlink, &devlink_list, list) {
1301 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
1302 !devlink->ops || !devlink->ops->sb_tc_pool_bind_get)
1304 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
1305 err = __sb_tc_pool_bind_get_dumpit(msg, start, &idx,
1308 NETLINK_CB(cb->skb).portid,
1309 cb->nlh->nlmsg_seq);
1310 if (err && err != -EOPNOTSUPP)
1315 mutex_unlock(&devlink_port_mutex);
1316 mutex_unlock(&devlink_mutex);
1322 static int devlink_sb_tc_pool_bind_set(struct devlink_port *devlink_port,
1323 unsigned int sb_index, u16 tc_index,
1324 enum devlink_sb_pool_type pool_type,
1325 u16 pool_index, u32 threshold)
1328 const struct devlink_ops *ops = devlink_port->devlink->ops;
1330 if (ops && ops->sb_tc_pool_bind_set)
1331 return ops->sb_tc_pool_bind_set(devlink_port, sb_index,
1332 tc_index, pool_type,
1333 pool_index, threshold);
1337 static int devlink_nl_cmd_sb_tc_pool_bind_set_doit(struct sk_buff *skb,
1338 struct genl_info *info)
1340 struct devlink_port *devlink_port = info->user_ptr[0];
1341 struct devlink_sb *devlink_sb = info->user_ptr[1];
1342 enum devlink_sb_pool_type pool_type;
1348 err = devlink_sb_pool_type_get_from_info(info, &pool_type);
1352 err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
1353 pool_type, &tc_index);
1357 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1362 if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD])
1365 threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
1366 return devlink_sb_tc_pool_bind_set(devlink_port, devlink_sb->index,
1367 tc_index, pool_type,
1368 pool_index, threshold);
1371 static int devlink_nl_cmd_sb_occ_snapshot_doit(struct sk_buff *skb,
1372 struct genl_info *info)
1374 struct devlink *devlink = info->user_ptr[0];
1375 struct devlink_sb *devlink_sb = info->user_ptr[1];
1376 const struct devlink_ops *ops = devlink->ops;
1378 if (ops && ops->sb_occ_snapshot)
1379 return ops->sb_occ_snapshot(devlink, devlink_sb->index);
1383 static int devlink_nl_cmd_sb_occ_max_clear_doit(struct sk_buff *skb,
1384 struct genl_info *info)
1386 struct devlink *devlink = info->user_ptr[0];
1387 struct devlink_sb *devlink_sb = info->user_ptr[1];
1388 const struct devlink_ops *ops = devlink->ops;
1390 if (ops && ops->sb_occ_max_clear)
1391 return ops->sb_occ_max_clear(devlink, devlink_sb->index);
1395 static int devlink_nl_eswitch_fill(struct sk_buff *msg, struct devlink *devlink,
1396 enum devlink_command cmd, u32 portid,
1399 const struct devlink_ops *ops = devlink->ops;
1405 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1409 err = devlink_nl_put_handle(msg, devlink);
1411 goto nla_put_failure;
1413 if (ops->eswitch_mode_get) {
1414 err = ops->eswitch_mode_get(devlink, &mode);
1416 goto nla_put_failure;
1417 err = nla_put_u16(msg, DEVLINK_ATTR_ESWITCH_MODE, mode);
1419 goto nla_put_failure;
1422 if (ops->eswitch_inline_mode_get) {
1423 err = ops->eswitch_inline_mode_get(devlink, &inline_mode);
1425 goto nla_put_failure;
1426 err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_INLINE_MODE,
1429 goto nla_put_failure;
1432 genlmsg_end(msg, hdr);
1436 genlmsg_cancel(msg, hdr);
1440 static int devlink_nl_cmd_eswitch_get_doit(struct sk_buff *skb,
1441 struct genl_info *info)
1443 struct devlink *devlink = info->user_ptr[0];
1444 const struct devlink_ops *ops = devlink->ops;
1445 struct sk_buff *msg;
1451 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1455 err = devlink_nl_eswitch_fill(msg, devlink, DEVLINK_CMD_ESWITCH_GET,
1456 info->snd_portid, info->snd_seq, 0);
1463 return genlmsg_reply(msg, info);
1466 static int devlink_nl_cmd_eswitch_set_doit(struct sk_buff *skb,
1467 struct genl_info *info)
1469 struct devlink *devlink = info->user_ptr[0];
1470 const struct devlink_ops *ops = devlink->ops;
1478 if (info->attrs[DEVLINK_ATTR_ESWITCH_MODE]) {
1479 if (!ops->eswitch_mode_set)
1481 mode = nla_get_u16(info->attrs[DEVLINK_ATTR_ESWITCH_MODE]);
1482 err = ops->eswitch_mode_set(devlink, mode);
1487 if (info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]) {
1488 if (!ops->eswitch_inline_mode_set)
1490 inline_mode = nla_get_u8(
1491 info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]);
1492 err = ops->eswitch_inline_mode_set(devlink, inline_mode);
1500 static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = {
1501 [DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING },
1502 [DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING },
1503 [DEVLINK_ATTR_PORT_INDEX] = { .type = NLA_U32 },
1504 [DEVLINK_ATTR_PORT_TYPE] = { .type = NLA_U16 },
1505 [DEVLINK_ATTR_PORT_SPLIT_COUNT] = { .type = NLA_U32 },
1506 [DEVLINK_ATTR_SB_INDEX] = { .type = NLA_U32 },
1507 [DEVLINK_ATTR_SB_POOL_INDEX] = { .type = NLA_U16 },
1508 [DEVLINK_ATTR_SB_POOL_TYPE] = { .type = NLA_U8 },
1509 [DEVLINK_ATTR_SB_POOL_SIZE] = { .type = NLA_U32 },
1510 [DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE] = { .type = NLA_U8 },
1511 [DEVLINK_ATTR_SB_THRESHOLD] = { .type = NLA_U32 },
1512 [DEVLINK_ATTR_SB_TC_INDEX] = { .type = NLA_U16 },
1513 [DEVLINK_ATTR_ESWITCH_MODE] = { .type = NLA_U16 },
1514 [DEVLINK_ATTR_ESWITCH_INLINE_MODE] = { .type = NLA_U8 },
1517 static const struct genl_ops devlink_nl_ops[] = {
1519 .cmd = DEVLINK_CMD_GET,
1520 .doit = devlink_nl_cmd_get_doit,
1521 .dumpit = devlink_nl_cmd_get_dumpit,
1522 .policy = devlink_nl_policy,
1523 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
1524 /* can be retrieved by unprivileged users */
1527 .cmd = DEVLINK_CMD_PORT_GET,
1528 .doit = devlink_nl_cmd_port_get_doit,
1529 .dumpit = devlink_nl_cmd_port_get_dumpit,
1530 .policy = devlink_nl_policy,
1531 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
1532 /* can be retrieved by unprivileged users */
1535 .cmd = DEVLINK_CMD_PORT_SET,
1536 .doit = devlink_nl_cmd_port_set_doit,
1537 .policy = devlink_nl_policy,
1538 .flags = GENL_ADMIN_PERM,
1539 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
1542 .cmd = DEVLINK_CMD_PORT_SPLIT,
1543 .doit = devlink_nl_cmd_port_split_doit,
1544 .policy = devlink_nl_policy,
1545 .flags = GENL_ADMIN_PERM,
1546 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
1549 .cmd = DEVLINK_CMD_PORT_UNSPLIT,
1550 .doit = devlink_nl_cmd_port_unsplit_doit,
1551 .policy = devlink_nl_policy,
1552 .flags = GENL_ADMIN_PERM,
1553 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
1556 .cmd = DEVLINK_CMD_SB_GET,
1557 .doit = devlink_nl_cmd_sb_get_doit,
1558 .dumpit = devlink_nl_cmd_sb_get_dumpit,
1559 .policy = devlink_nl_policy,
1560 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
1561 DEVLINK_NL_FLAG_NEED_SB,
1562 /* can be retrieved by unprivileged users */
1565 .cmd = DEVLINK_CMD_SB_POOL_GET,
1566 .doit = devlink_nl_cmd_sb_pool_get_doit,
1567 .dumpit = devlink_nl_cmd_sb_pool_get_dumpit,
1568 .policy = devlink_nl_policy,
1569 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
1570 DEVLINK_NL_FLAG_NEED_SB,
1571 /* can be retrieved by unprivileged users */
1574 .cmd = DEVLINK_CMD_SB_POOL_SET,
1575 .doit = devlink_nl_cmd_sb_pool_set_doit,
1576 .policy = devlink_nl_policy,
1577 .flags = GENL_ADMIN_PERM,
1578 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
1579 DEVLINK_NL_FLAG_NEED_SB,
1582 .cmd = DEVLINK_CMD_SB_PORT_POOL_GET,
1583 .doit = devlink_nl_cmd_sb_port_pool_get_doit,
1584 .dumpit = devlink_nl_cmd_sb_port_pool_get_dumpit,
1585 .policy = devlink_nl_policy,
1586 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
1587 DEVLINK_NL_FLAG_NEED_SB,
1588 /* can be retrieved by unprivileged users */
1591 .cmd = DEVLINK_CMD_SB_PORT_POOL_SET,
1592 .doit = devlink_nl_cmd_sb_port_pool_set_doit,
1593 .policy = devlink_nl_policy,
1594 .flags = GENL_ADMIN_PERM,
1595 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
1596 DEVLINK_NL_FLAG_NEED_SB,
1599 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_GET,
1600 .doit = devlink_nl_cmd_sb_tc_pool_bind_get_doit,
1601 .dumpit = devlink_nl_cmd_sb_tc_pool_bind_get_dumpit,
1602 .policy = devlink_nl_policy,
1603 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
1604 DEVLINK_NL_FLAG_NEED_SB,
1605 /* can be retrieved by unprivileged users */
1608 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_SET,
1609 .doit = devlink_nl_cmd_sb_tc_pool_bind_set_doit,
1610 .policy = devlink_nl_policy,
1611 .flags = GENL_ADMIN_PERM,
1612 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
1613 DEVLINK_NL_FLAG_NEED_SB,
1616 .cmd = DEVLINK_CMD_SB_OCC_SNAPSHOT,
1617 .doit = devlink_nl_cmd_sb_occ_snapshot_doit,
1618 .policy = devlink_nl_policy,
1619 .flags = GENL_ADMIN_PERM,
1620 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
1621 DEVLINK_NL_FLAG_NEED_SB |
1622 DEVLINK_NL_FLAG_LOCK_PORTS,
1625 .cmd = DEVLINK_CMD_SB_OCC_MAX_CLEAR,
1626 .doit = devlink_nl_cmd_sb_occ_max_clear_doit,
1627 .policy = devlink_nl_policy,
1628 .flags = GENL_ADMIN_PERM,
1629 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
1630 DEVLINK_NL_FLAG_NEED_SB |
1631 DEVLINK_NL_FLAG_LOCK_PORTS,
1634 .cmd = DEVLINK_CMD_ESWITCH_GET,
1635 .doit = devlink_nl_cmd_eswitch_get_doit,
1636 .policy = devlink_nl_policy,
1637 .flags = GENL_ADMIN_PERM,
1638 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
1641 .cmd = DEVLINK_CMD_ESWITCH_SET,
1642 .doit = devlink_nl_cmd_eswitch_set_doit,
1643 .policy = devlink_nl_policy,
1644 .flags = GENL_ADMIN_PERM,
1645 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
1649 static struct genl_family devlink_nl_family __ro_after_init = {
1650 .name = DEVLINK_GENL_NAME,
1651 .version = DEVLINK_GENL_VERSION,
1652 .maxattr = DEVLINK_ATTR_MAX,
1654 .pre_doit = devlink_nl_pre_doit,
1655 .post_doit = devlink_nl_post_doit,
1656 .module = THIS_MODULE,
1657 .ops = devlink_nl_ops,
1658 .n_ops = ARRAY_SIZE(devlink_nl_ops),
1659 .mcgrps = devlink_nl_mcgrps,
1660 .n_mcgrps = ARRAY_SIZE(devlink_nl_mcgrps),
1664 * devlink_alloc - Allocate new devlink instance resources
1667 * @priv_size: size of user private data
1669 * Allocate new devlink instance resources, including devlink index
1672 struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size)
1674 struct devlink *devlink;
1676 devlink = kzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL);
1680 devlink_net_set(devlink, &init_net);
1681 INIT_LIST_HEAD(&devlink->port_list);
1682 INIT_LIST_HEAD(&devlink->sb_list);
1685 EXPORT_SYMBOL_GPL(devlink_alloc);
1688 * devlink_register - Register devlink instance
1692 int devlink_register(struct devlink *devlink, struct device *dev)
1694 mutex_lock(&devlink_mutex);
1696 list_add_tail(&devlink->list, &devlink_list);
1697 devlink_notify(devlink, DEVLINK_CMD_NEW);
1698 mutex_unlock(&devlink_mutex);
1701 EXPORT_SYMBOL_GPL(devlink_register);
1704 * devlink_unregister - Unregister devlink instance
1708 void devlink_unregister(struct devlink *devlink)
1710 mutex_lock(&devlink_mutex);
1711 devlink_notify(devlink, DEVLINK_CMD_DEL);
1712 list_del(&devlink->list);
1713 mutex_unlock(&devlink_mutex);
1715 EXPORT_SYMBOL_GPL(devlink_unregister);
1718 * devlink_free - Free devlink instance resources
1722 void devlink_free(struct devlink *devlink)
1726 EXPORT_SYMBOL_GPL(devlink_free);
1729 * devlink_port_register - Register devlink port
1732 * @devlink_port: devlink port
1735 * Register devlink port with provided port index. User can use
1736 * any indexing, even hw-related one. devlink_port structure
1737 * is convenient to be embedded inside user driver private structure.
1738 * Note that the caller should take care of zeroing the devlink_port
1741 int devlink_port_register(struct devlink *devlink,
1742 struct devlink_port *devlink_port,
1743 unsigned int port_index)
1745 mutex_lock(&devlink_port_mutex);
1746 if (devlink_port_index_exists(devlink, port_index)) {
1747 mutex_unlock(&devlink_port_mutex);
1750 devlink_port->devlink = devlink;
1751 devlink_port->index = port_index;
1752 devlink_port->registered = true;
1753 list_add_tail(&devlink_port->list, &devlink->port_list);
1754 mutex_unlock(&devlink_port_mutex);
1755 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
1758 EXPORT_SYMBOL_GPL(devlink_port_register);
1761 * devlink_port_unregister - Unregister devlink port
1763 * @devlink_port: devlink port
1765 void devlink_port_unregister(struct devlink_port *devlink_port)
1767 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
1768 mutex_lock(&devlink_port_mutex);
1769 list_del(&devlink_port->list);
1770 mutex_unlock(&devlink_port_mutex);
1772 EXPORT_SYMBOL_GPL(devlink_port_unregister);
1774 static void __devlink_port_type_set(struct devlink_port *devlink_port,
1775 enum devlink_port_type type,
1778 devlink_port->type = type;
1779 devlink_port->type_dev = type_dev;
1780 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
1784 * devlink_port_type_eth_set - Set port type to Ethernet
1786 * @devlink_port: devlink port
1787 * @netdev: related netdevice
1789 void devlink_port_type_eth_set(struct devlink_port *devlink_port,
1790 struct net_device *netdev)
1792 return __devlink_port_type_set(devlink_port,
1793 DEVLINK_PORT_TYPE_ETH, netdev);
1795 EXPORT_SYMBOL_GPL(devlink_port_type_eth_set);
1798 * devlink_port_type_ib_set - Set port type to InfiniBand
1800 * @devlink_port: devlink port
1801 * @ibdev: related IB device
1803 void devlink_port_type_ib_set(struct devlink_port *devlink_port,
1804 struct ib_device *ibdev)
1806 return __devlink_port_type_set(devlink_port,
1807 DEVLINK_PORT_TYPE_IB, ibdev);
1809 EXPORT_SYMBOL_GPL(devlink_port_type_ib_set);
1812 * devlink_port_type_clear - Clear port type
1814 * @devlink_port: devlink port
1816 void devlink_port_type_clear(struct devlink_port *devlink_port)
1818 return __devlink_port_type_set(devlink_port,
1819 DEVLINK_PORT_TYPE_NOTSET, NULL);
1821 EXPORT_SYMBOL_GPL(devlink_port_type_clear);
1824 * devlink_port_split_set - Set port is split
1826 * @devlink_port: devlink port
1827 * @split_group: split group - identifies group split port is part of
1829 void devlink_port_split_set(struct devlink_port *devlink_port,
1832 devlink_port->split = true;
1833 devlink_port->split_group = split_group;
1834 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
1836 EXPORT_SYMBOL_GPL(devlink_port_split_set);
1838 int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
1839 u32 size, u16 ingress_pools_count,
1840 u16 egress_pools_count, u16 ingress_tc_count,
1841 u16 egress_tc_count)
1843 struct devlink_sb *devlink_sb;
1846 mutex_lock(&devlink_mutex);
1847 if (devlink_sb_index_exists(devlink, sb_index)) {
1852 devlink_sb = kzalloc(sizeof(*devlink_sb), GFP_KERNEL);
1857 devlink_sb->index = sb_index;
1858 devlink_sb->size = size;
1859 devlink_sb->ingress_pools_count = ingress_pools_count;
1860 devlink_sb->egress_pools_count = egress_pools_count;
1861 devlink_sb->ingress_tc_count = ingress_tc_count;
1862 devlink_sb->egress_tc_count = egress_tc_count;
1863 list_add_tail(&devlink_sb->list, &devlink->sb_list);
1865 mutex_unlock(&devlink_mutex);
1868 EXPORT_SYMBOL_GPL(devlink_sb_register);
1870 void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index)
1872 struct devlink_sb *devlink_sb;
1874 mutex_lock(&devlink_mutex);
1875 devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
1876 WARN_ON(!devlink_sb);
1877 list_del(&devlink_sb->list);
1878 mutex_unlock(&devlink_mutex);
1881 EXPORT_SYMBOL_GPL(devlink_sb_unregister);
1883 static int __init devlink_module_init(void)
1885 return genl_register_family(&devlink_nl_family);
1888 static void __exit devlink_module_exit(void)
1890 genl_unregister_family(&devlink_nl_family);
1893 module_init(devlink_module_init);
1894 module_exit(devlink_module_exit);
1896 MODULE_LICENSE("GPL v2");
1898 MODULE_DESCRIPTION("Network physical device Netlink interface");
1899 MODULE_ALIAS_GENL_FAMILY(DEVLINK_GENL_NAME);