1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Bridge netlink control interface
6 * Stephen Hemminger <shemminger@osdl.org>
9 #include <linux/kernel.h>
10 #include <linux/slab.h>
11 #include <linux/etherdevice.h>
12 #include <net/rtnetlink.h>
13 #include <net/net_namespace.h>
15 #include <uapi/linux/if_bridge.h>
17 #include "br_private.h"
18 #include "br_private_stp.h"
19 #include "br_private_cfm.h"
20 #include "br_private_tunnel.h"
21 #include "br_private_mcast_eht.h"
23 static int __get_num_vlan_infos(struct net_bridge_vlan_group *vg,
26 struct net_bridge_vlan *v;
27 u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0;
31 if (!(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED))
34 pvid = br_get_pvid(vg);
35 /* Count number of vlan infos */
36 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
38 /* only a context, bridge vlan not activated */
39 if (!br_vlan_should_use(v))
42 flags |= BRIDGE_VLAN_INFO_PVID;
44 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
45 flags |= BRIDGE_VLAN_INFO_UNTAGGED;
47 if (vid_range_start == 0) {
49 } else if ((v->vid - vid_range_end) == 1 &&
50 flags == vid_range_flags) {
51 vid_range_end = v->vid;
54 if ((vid_range_end - vid_range_start) > 0)
60 vid_range_start = v->vid;
61 vid_range_end = v->vid;
62 vid_range_flags = flags;
65 if (vid_range_start != 0) {
66 if ((vid_range_end - vid_range_start) > 0)
75 static int br_get_num_vlan_infos(struct net_bridge_vlan_group *vg,
83 if (filter_mask & RTEXT_FILTER_BRVLAN)
87 num_vlans = __get_num_vlan_infos(vg, filter_mask);
93 static size_t br_get_link_af_size_filtered(const struct net_device *dev,
96 struct net_bridge_vlan_group *vg = NULL;
97 struct net_bridge_port *p = NULL;
98 struct net_bridge *br = NULL;
99 u32 num_cfm_peer_mep_infos;
100 u32 num_cfm_mep_infos;
105 if (netif_is_bridge_port(dev)) {
106 p = br_port_get_check_rcu(dev);
108 vg = nbp_vlan_group_rcu(p);
109 } else if (netif_is_bridge_master(dev)) {
110 br = netdev_priv(dev);
111 vg = br_vlan_group_rcu(br);
113 num_vlan_infos = br_get_num_vlan_infos(vg, filter_mask);
116 if (p && (p->flags & BR_VLAN_TUNNEL))
117 vinfo_sz += br_get_vlan_tunnel_info_size(vg);
119 /* Each VLAN is returned in bridge_vlan_info along with flags */
120 vinfo_sz += num_vlan_infos * nla_total_size(sizeof(struct bridge_vlan_info));
122 if (p && vg && (filter_mask & RTEXT_FILTER_MST))
123 vinfo_sz += br_mst_info_size(vg);
125 if (!(filter_mask & RTEXT_FILTER_CFM_STATUS))
131 /* CFM status info must be added */
132 br_cfm_mep_count(br, &num_cfm_mep_infos);
133 br_cfm_peer_mep_count(br, &num_cfm_peer_mep_infos);
135 vinfo_sz += nla_total_size(0); /* IFLA_BRIDGE_CFM */
136 /* For each status struct the MEP instance (u32) is added */
137 /* MEP instance (u32) + br_cfm_mep_status */
138 vinfo_sz += num_cfm_mep_infos *
139 /*IFLA_BRIDGE_CFM_MEP_STATUS_INSTANCE */
140 (nla_total_size(sizeof(u32))
141 /* IFLA_BRIDGE_CFM_MEP_STATUS_OPCODE_UNEXP_SEEN */
142 + nla_total_size(sizeof(u32))
143 /* IFLA_BRIDGE_CFM_MEP_STATUS_VERSION_UNEXP_SEEN */
144 + nla_total_size(sizeof(u32))
145 /* IFLA_BRIDGE_CFM_MEP_STATUS_RX_LEVEL_LOW_SEEN */
146 + nla_total_size(sizeof(u32)));
147 /* MEP instance (u32) + br_cfm_cc_peer_status */
148 vinfo_sz += num_cfm_peer_mep_infos *
149 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_INSTANCE */
150 (nla_total_size(sizeof(u32))
151 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_PEER_MEPID */
152 + nla_total_size(sizeof(u32))
153 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_CCM_DEFECT */
154 + nla_total_size(sizeof(u32))
155 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_RDI */
156 + nla_total_size(sizeof(u32))
157 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_PORT_TLV_VALUE */
158 + nla_total_size(sizeof(u8))
159 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_IF_TLV_VALUE */
160 + nla_total_size(sizeof(u8))
161 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_SEEN */
162 + nla_total_size(sizeof(u32))
163 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_TLV_SEEN */
164 + nla_total_size(sizeof(u32))
165 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_SEQ_UNEXP_SEEN */
166 + nla_total_size(sizeof(u32)));
171 static inline size_t br_port_info_size(void)
173 return nla_total_size(1) /* IFLA_BRPORT_STATE */
174 + nla_total_size(2) /* IFLA_BRPORT_PRIORITY */
175 + nla_total_size(4) /* IFLA_BRPORT_COST */
176 + nla_total_size(1) /* IFLA_BRPORT_MODE */
177 + nla_total_size(1) /* IFLA_BRPORT_GUARD */
178 + nla_total_size(1) /* IFLA_BRPORT_PROTECT */
179 + nla_total_size(1) /* IFLA_BRPORT_FAST_LEAVE */
180 + nla_total_size(1) /* IFLA_BRPORT_MCAST_TO_UCAST */
181 + nla_total_size(1) /* IFLA_BRPORT_LEARNING */
182 + nla_total_size(1) /* IFLA_BRPORT_UNICAST_FLOOD */
183 + nla_total_size(1) /* IFLA_BRPORT_MCAST_FLOOD */
184 + nla_total_size(1) /* IFLA_BRPORT_BCAST_FLOOD */
185 + nla_total_size(1) /* IFLA_BRPORT_PROXYARP */
186 + nla_total_size(1) /* IFLA_BRPORT_PROXYARP_WIFI */
187 + nla_total_size(1) /* IFLA_BRPORT_VLAN_TUNNEL */
188 + nla_total_size(1) /* IFLA_BRPORT_NEIGH_SUPPRESS */
189 + nla_total_size(1) /* IFLA_BRPORT_ISOLATED */
190 + nla_total_size(1) /* IFLA_BRPORT_LOCKED */
191 + nla_total_size(1) /* IFLA_BRPORT_MAB */
192 + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_ROOT_ID */
193 + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_BRIDGE_ID */
194 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_DESIGNATED_PORT */
195 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_DESIGNATED_COST */
196 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_ID */
197 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_NO */
198 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_TOPOLOGY_CHANGE_ACK */
199 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_CONFIG_PENDING */
200 + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_MESSAGE_AGE_TIMER */
201 + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_FORWARD_DELAY_TIMER */
202 + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_HOLD_TIMER */
203 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
204 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_MULTICAST_ROUTER */
206 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_GROUP_FWD_MASK */
207 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_MRP_RING_OPEN */
208 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_MRP_IN_OPEN */
209 + nla_total_size(sizeof(u32)) /* IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT */
210 + nla_total_size(sizeof(u32)) /* IFLA_BRPORT_MCAST_EHT_HOSTS_CNT */
214 static inline size_t br_nlmsg_size(struct net_device *dev, u32 filter_mask)
216 return NLMSG_ALIGN(sizeof(struct ifinfomsg))
217 + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */
218 + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */
219 + nla_total_size(4) /* IFLA_MASTER */
220 + nla_total_size(4) /* IFLA_MTU */
221 + nla_total_size(4) /* IFLA_LINK */
222 + nla_total_size(1) /* IFLA_OPERSTATE */
223 + nla_total_size(br_port_info_size()) /* IFLA_PROTINFO */
224 + nla_total_size(br_get_link_af_size_filtered(dev,
225 filter_mask)) /* IFLA_AF_SPEC */
226 + nla_total_size(4); /* IFLA_BRPORT_BACKUP_PORT */
229 static int br_port_fill_attrs(struct sk_buff *skb,
230 const struct net_bridge_port *p)
232 u8 mode = !!(p->flags & BR_HAIRPIN_MODE);
233 struct net_bridge_port *backup_p;
236 if (nla_put_u8(skb, IFLA_BRPORT_STATE, p->state) ||
237 nla_put_u16(skb, IFLA_BRPORT_PRIORITY, p->priority) ||
238 nla_put_u32(skb, IFLA_BRPORT_COST, p->path_cost) ||
239 nla_put_u8(skb, IFLA_BRPORT_MODE, mode) ||
240 nla_put_u8(skb, IFLA_BRPORT_GUARD, !!(p->flags & BR_BPDU_GUARD)) ||
241 nla_put_u8(skb, IFLA_BRPORT_PROTECT,
242 !!(p->flags & BR_ROOT_BLOCK)) ||
243 nla_put_u8(skb, IFLA_BRPORT_FAST_LEAVE,
244 !!(p->flags & BR_MULTICAST_FAST_LEAVE)) ||
245 nla_put_u8(skb, IFLA_BRPORT_MCAST_TO_UCAST,
246 !!(p->flags & BR_MULTICAST_TO_UNICAST)) ||
247 nla_put_u8(skb, IFLA_BRPORT_LEARNING, !!(p->flags & BR_LEARNING)) ||
248 nla_put_u8(skb, IFLA_BRPORT_UNICAST_FLOOD,
249 !!(p->flags & BR_FLOOD)) ||
250 nla_put_u8(skb, IFLA_BRPORT_MCAST_FLOOD,
251 !!(p->flags & BR_MCAST_FLOOD)) ||
252 nla_put_u8(skb, IFLA_BRPORT_BCAST_FLOOD,
253 !!(p->flags & BR_BCAST_FLOOD)) ||
254 nla_put_u8(skb, IFLA_BRPORT_PROXYARP, !!(p->flags & BR_PROXYARP)) ||
255 nla_put_u8(skb, IFLA_BRPORT_PROXYARP_WIFI,
256 !!(p->flags & BR_PROXYARP_WIFI)) ||
257 nla_put(skb, IFLA_BRPORT_ROOT_ID, sizeof(struct ifla_bridge_id),
258 &p->designated_root) ||
259 nla_put(skb, IFLA_BRPORT_BRIDGE_ID, sizeof(struct ifla_bridge_id),
260 &p->designated_bridge) ||
261 nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_PORT, p->designated_port) ||
262 nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_COST, p->designated_cost) ||
263 nla_put_u16(skb, IFLA_BRPORT_ID, p->port_id) ||
264 nla_put_u16(skb, IFLA_BRPORT_NO, p->port_no) ||
265 nla_put_u8(skb, IFLA_BRPORT_TOPOLOGY_CHANGE_ACK,
266 p->topology_change_ack) ||
267 nla_put_u8(skb, IFLA_BRPORT_CONFIG_PENDING, p->config_pending) ||
268 nla_put_u8(skb, IFLA_BRPORT_VLAN_TUNNEL, !!(p->flags &
270 nla_put_u16(skb, IFLA_BRPORT_GROUP_FWD_MASK, p->group_fwd_mask) ||
271 nla_put_u8(skb, IFLA_BRPORT_NEIGH_SUPPRESS,
272 !!(p->flags & BR_NEIGH_SUPPRESS)) ||
273 nla_put_u8(skb, IFLA_BRPORT_MRP_RING_OPEN, !!(p->flags &
274 BR_MRP_LOST_CONT)) ||
275 nla_put_u8(skb, IFLA_BRPORT_MRP_IN_OPEN,
276 !!(p->flags & BR_MRP_LOST_IN_CONT)) ||
277 nla_put_u8(skb, IFLA_BRPORT_ISOLATED, !!(p->flags & BR_ISOLATED)) ||
278 nla_put_u8(skb, IFLA_BRPORT_LOCKED, !!(p->flags & BR_PORT_LOCKED)) ||
279 nla_put_u8(skb, IFLA_BRPORT_MAB, !!(p->flags & BR_PORT_MAB)))
282 timerval = br_timer_value(&p->message_age_timer);
283 if (nla_put_u64_64bit(skb, IFLA_BRPORT_MESSAGE_AGE_TIMER, timerval,
286 timerval = br_timer_value(&p->forward_delay_timer);
287 if (nla_put_u64_64bit(skb, IFLA_BRPORT_FORWARD_DELAY_TIMER, timerval,
290 timerval = br_timer_value(&p->hold_timer);
291 if (nla_put_u64_64bit(skb, IFLA_BRPORT_HOLD_TIMER, timerval,
295 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
296 if (nla_put_u8(skb, IFLA_BRPORT_MULTICAST_ROUTER,
297 p->multicast_ctx.multicast_router) ||
298 nla_put_u32(skb, IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT,
299 p->multicast_eht_hosts_limit) ||
300 nla_put_u32(skb, IFLA_BRPORT_MCAST_EHT_HOSTS_CNT,
301 p->multicast_eht_hosts_cnt))
305 /* we might be called only with br->lock */
307 backup_p = rcu_dereference(p->backup_port);
309 nla_put_u32(skb, IFLA_BRPORT_BACKUP_PORT,
310 backup_p->dev->ifindex);
316 static int br_fill_ifvlaninfo_range(struct sk_buff *skb, u16 vid_start,
317 u16 vid_end, u16 flags)
319 struct bridge_vlan_info vinfo;
321 if ((vid_end - vid_start) > 0) {
322 /* add range to skb */
323 vinfo.vid = vid_start;
324 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_BEGIN;
325 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
326 sizeof(vinfo), &vinfo))
327 goto nla_put_failure;
330 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_END;
331 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
332 sizeof(vinfo), &vinfo))
333 goto nla_put_failure;
335 vinfo.vid = vid_start;
337 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
338 sizeof(vinfo), &vinfo))
339 goto nla_put_failure;
348 static int br_fill_ifvlaninfo_compressed(struct sk_buff *skb,
349 struct net_bridge_vlan_group *vg)
351 struct net_bridge_vlan *v;
352 u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0;
356 /* Pack IFLA_BRIDGE_VLAN_INFO's for every vlan
357 * and mark vlan info with begin and end flags
358 * if vlaninfo represents a range
360 pvid = br_get_pvid(vg);
361 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
363 if (!br_vlan_should_use(v))
366 flags |= BRIDGE_VLAN_INFO_PVID;
368 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
369 flags |= BRIDGE_VLAN_INFO_UNTAGGED;
371 if (vid_range_start == 0) {
373 } else if ((v->vid - vid_range_end) == 1 &&
374 flags == vid_range_flags) {
375 vid_range_end = v->vid;
378 err = br_fill_ifvlaninfo_range(skb, vid_range_start,
386 vid_range_start = v->vid;
387 vid_range_end = v->vid;
388 vid_range_flags = flags;
391 if (vid_range_start != 0) {
392 /* Call it once more to send any left over vlans */
393 err = br_fill_ifvlaninfo_range(skb, vid_range_start,
403 static int br_fill_ifvlaninfo(struct sk_buff *skb,
404 struct net_bridge_vlan_group *vg)
406 struct bridge_vlan_info vinfo;
407 struct net_bridge_vlan *v;
410 pvid = br_get_pvid(vg);
411 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
412 if (!br_vlan_should_use(v))
418 vinfo.flags |= BRIDGE_VLAN_INFO_PVID;
420 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
421 vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED;
423 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
424 sizeof(vinfo), &vinfo))
425 goto nla_put_failure;
435 * Create one netlink message for one interface
436 * Contains port and master info as well as carrier and bridge state.
438 static int br_fill_ifinfo(struct sk_buff *skb,
439 const struct net_bridge_port *port,
440 u32 pid, u32 seq, int event, unsigned int flags,
441 u32 filter_mask, const struct net_device *dev,
444 u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN;
445 struct nlattr *af = NULL;
446 struct net_bridge *br;
447 struct ifinfomsg *hdr;
448 struct nlmsghdr *nlh;
453 br = netdev_priv(dev);
455 br_debug(br, "br_fill_info event %d port %s master %s\n",
456 event, dev->name, br->dev->name);
458 nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags);
462 hdr = nlmsg_data(nlh);
463 hdr->ifi_family = AF_BRIDGE;
465 hdr->ifi_type = dev->type;
466 hdr->ifi_index = dev->ifindex;
467 hdr->ifi_flags = dev_get_flags(dev);
470 if (nla_put_string(skb, IFLA_IFNAME, dev->name) ||
471 nla_put_u32(skb, IFLA_MASTER, br->dev->ifindex) ||
472 nla_put_u32(skb, IFLA_MTU, dev->mtu) ||
473 nla_put_u8(skb, IFLA_OPERSTATE, operstate) ||
475 nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) ||
476 (dev->ifindex != dev_get_iflink(dev) &&
477 nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev))))
478 goto nla_put_failure;
480 if (event == RTM_NEWLINK && port) {
483 nest = nla_nest_start(skb, IFLA_PROTINFO);
484 if (nest == NULL || br_port_fill_attrs(skb, port) < 0)
485 goto nla_put_failure;
486 nla_nest_end(skb, nest);
489 if (filter_mask & (RTEXT_FILTER_BRVLAN |
490 RTEXT_FILTER_BRVLAN_COMPRESSED |
492 RTEXT_FILTER_CFM_CONFIG |
493 RTEXT_FILTER_CFM_STATUS |
495 af = nla_nest_start_noflag(skb, IFLA_AF_SPEC);
497 goto nla_put_failure;
500 /* Check if the VID information is requested */
501 if ((filter_mask & RTEXT_FILTER_BRVLAN) ||
502 (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) {
503 struct net_bridge_vlan_group *vg;
506 /* RCU needed because of the VLAN locking rules (rcu || rtnl) */
509 vg = nbp_vlan_group_rcu(port);
511 vg = br_vlan_group_rcu(br);
513 if (!vg || !vg->num_vlans) {
517 if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)
518 err = br_fill_ifvlaninfo_compressed(skb, vg);
520 err = br_fill_ifvlaninfo(skb, vg);
522 if (port && (port->flags & BR_VLAN_TUNNEL))
523 err = br_fill_vlan_tunnel_info(skb, vg);
526 goto nla_put_failure;
529 if (filter_mask & RTEXT_FILTER_MRP) {
532 if (!br_mrp_enabled(br) || port)
536 err = br_mrp_fill_info(skb, br);
540 goto nla_put_failure;
543 if (filter_mask & (RTEXT_FILTER_CFM_CONFIG | RTEXT_FILTER_CFM_STATUS)) {
544 struct nlattr *cfm_nest = NULL;
547 if (!br_cfm_created(br) || port)
550 cfm_nest = nla_nest_start(skb, IFLA_BRIDGE_CFM);
552 goto nla_put_failure;
554 if (filter_mask & RTEXT_FILTER_CFM_CONFIG) {
556 err = br_cfm_config_fill_info(skb, br);
559 goto nla_put_failure;
562 if (filter_mask & RTEXT_FILTER_CFM_STATUS) {
564 err = br_cfm_status_fill_info(skb, br, getlink);
567 goto nla_put_failure;
570 nla_nest_end(skb, cfm_nest);
573 if ((filter_mask & RTEXT_FILTER_MST) &&
574 br_opt_get(br, BROPT_MST_ENABLED) && port) {
575 const struct net_bridge_vlan_group *vg = nbp_vlan_group(port);
576 struct nlattr *mst_nest;
579 if (!vg || !vg->num_vlans)
582 mst_nest = nla_nest_start(skb, IFLA_BRIDGE_MST);
584 goto nla_put_failure;
586 err = br_mst_fill_info(skb, vg);
588 goto nla_put_failure;
590 nla_nest_end(skb, mst_nest);
595 if (nlmsg_get_pos(skb) - (void *)af > nla_attr_size(0))
596 nla_nest_end(skb, af);
598 nla_nest_cancel(skb, af);
605 nlmsg_cancel(skb, nlh);
609 void br_info_notify(int event, const struct net_bridge *br,
610 const struct net_bridge_port *port, u32 filter)
612 struct net_device *dev;
618 if (WARN_ON(!port && !br))
624 port_no = port->port_no;
630 br_debug(br, "port %u(%s) event %d\n", port_no, dev->name, event);
632 skb = nlmsg_new(br_nlmsg_size(dev, filter), GFP_ATOMIC);
636 err = br_fill_ifinfo(skb, port, 0, 0, event, 0, filter, dev, false);
638 /* -EMSGSIZE implies BUG in br_nlmsg_size() */
639 WARN_ON(err == -EMSGSIZE);
643 rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC);
646 rtnl_set_sk_err(net, RTNLGRP_LINK, err);
649 /* Notify listeners of a change in bridge or port information */
650 void br_ifinfo_notify(int event, const struct net_bridge *br,
651 const struct net_bridge_port *port)
653 u32 filter = RTEXT_FILTER_BRVLAN_COMPRESSED;
655 return br_info_notify(event, br, port, filter);
659 * Dump information about all ports, in response to GETLINK
661 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq,
662 struct net_device *dev, u32 filter_mask, int nlflags)
664 struct net_bridge_port *port = br_port_get_rtnl(dev);
666 if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) &&
667 !(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) &&
668 !(filter_mask & RTEXT_FILTER_MRP) &&
669 !(filter_mask & RTEXT_FILTER_CFM_CONFIG) &&
670 !(filter_mask & RTEXT_FILTER_CFM_STATUS))
673 return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags,
674 filter_mask, dev, true);
677 static int br_vlan_info(struct net_bridge *br, struct net_bridge_port *p,
678 int cmd, struct bridge_vlan_info *vinfo, bool *changed,
679 struct netlink_ext_ack *extack)
687 /* if the MASTER flag is set this will act on the global
688 * per-VLAN entry as well
690 err = nbp_vlan_add(p, vinfo->vid, vinfo->flags,
691 &curr_change, extack);
693 vinfo->flags |= BRIDGE_VLAN_INFO_BRENTRY;
694 err = br_vlan_add(br, vinfo->vid, vinfo->flags,
695 &curr_change, extack);
703 if (!nbp_vlan_delete(p, vinfo->vid))
706 if ((vinfo->flags & BRIDGE_VLAN_INFO_MASTER) &&
707 !br_vlan_delete(p->br, vinfo->vid))
709 } else if (!br_vlan_delete(br, vinfo->vid)) {
718 int br_process_vlan_info(struct net_bridge *br,
719 struct net_bridge_port *p, int cmd,
720 struct bridge_vlan_info *vinfo_curr,
721 struct bridge_vlan_info **vinfo_last,
723 struct netlink_ext_ack *extack)
727 if (!br_vlan_valid_id(vinfo_curr->vid, extack))
730 /* needed for vlan-only NEWVLAN/DELVLAN notifications */
731 rtm_cmd = br_afspec_cmd_to_rtm(cmd);
733 if (vinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) {
734 if (!br_vlan_valid_range(vinfo_curr, *vinfo_last, extack))
736 *vinfo_last = vinfo_curr;
741 struct bridge_vlan_info tmp_vinfo;
742 int v, v_change_start = 0;
744 if (!br_vlan_valid_range(vinfo_curr, *vinfo_last, extack))
747 memcpy(&tmp_vinfo, *vinfo_last,
748 sizeof(struct bridge_vlan_info));
749 for (v = (*vinfo_last)->vid; v <= vinfo_curr->vid; v++) {
750 bool curr_change = false;
753 err = br_vlan_info(br, p, cmd, &tmp_vinfo, &curr_change,
758 *changed = curr_change;
762 /* nothing to notify yet */
765 br_vlan_notify(br, p, v_change_start,
771 /* v_change_start is set only if the last/whole range changed */
773 br_vlan_notify(br, p, v_change_start,
781 err = br_vlan_info(br, p, cmd, vinfo_curr, changed, extack);
783 br_vlan_notify(br, p, vinfo_curr->vid, 0, rtm_cmd);
788 static int br_afspec(struct net_bridge *br,
789 struct net_bridge_port *p,
790 struct nlattr *af_spec,
791 int cmd, bool *changed,
792 struct netlink_ext_ack *extack)
794 struct bridge_vlan_info *vinfo_curr = NULL;
795 struct bridge_vlan_info *vinfo_last = NULL;
797 struct vtunnel_info tinfo_last = {};
798 struct vtunnel_info tinfo_curr = {};
801 nla_for_each_nested(attr, af_spec, rem) {
803 switch (nla_type(attr)) {
804 case IFLA_BRIDGE_VLAN_TUNNEL_INFO:
805 if (!p || !(p->flags & BR_VLAN_TUNNEL))
807 err = br_parse_vlan_tunnel_info(attr, &tinfo_curr);
810 err = br_process_vlan_tunnel_info(br, p, cmd,
817 case IFLA_BRIDGE_VLAN_INFO:
818 if (nla_len(attr) != sizeof(struct bridge_vlan_info))
820 vinfo_curr = nla_data(attr);
821 err = br_process_vlan_info(br, p, cmd, vinfo_curr,
822 &vinfo_last, changed,
827 case IFLA_BRIDGE_MRP:
828 err = br_mrp_parse(br, p, attr, cmd, extack);
832 case IFLA_BRIDGE_CFM:
833 err = br_cfm_parse(br, p, attr, cmd, extack);
837 case IFLA_BRIDGE_MST:
839 NL_SET_ERR_MSG(extack,
840 "MST states can only be set on bridge ports");
844 if (cmd != RTM_SETLINK) {
845 NL_SET_ERR_MSG(extack,
846 "MST states can only be set through RTM_SETLINK");
850 err = br_mst_process(p, attr, extack);
860 static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = {
861 [IFLA_BRPORT_STATE] = { .type = NLA_U8 },
862 [IFLA_BRPORT_COST] = { .type = NLA_U32 },
863 [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 },
864 [IFLA_BRPORT_MODE] = { .type = NLA_U8 },
865 [IFLA_BRPORT_GUARD] = { .type = NLA_U8 },
866 [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 },
867 [IFLA_BRPORT_FAST_LEAVE]= { .type = NLA_U8 },
868 [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 },
869 [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 },
870 [IFLA_BRPORT_PROXYARP] = { .type = NLA_U8 },
871 [IFLA_BRPORT_PROXYARP_WIFI] = { .type = NLA_U8 },
872 [IFLA_BRPORT_MULTICAST_ROUTER] = { .type = NLA_U8 },
873 [IFLA_BRPORT_MCAST_TO_UCAST] = { .type = NLA_U8 },
874 [IFLA_BRPORT_MCAST_FLOOD] = { .type = NLA_U8 },
875 [IFLA_BRPORT_BCAST_FLOOD] = { .type = NLA_U8 },
876 [IFLA_BRPORT_VLAN_TUNNEL] = { .type = NLA_U8 },
877 [IFLA_BRPORT_GROUP_FWD_MASK] = { .type = NLA_U16 },
878 [IFLA_BRPORT_NEIGH_SUPPRESS] = { .type = NLA_U8 },
879 [IFLA_BRPORT_ISOLATED] = { .type = NLA_U8 },
880 [IFLA_BRPORT_LOCKED] = { .type = NLA_U8 },
881 [IFLA_BRPORT_MAB] = { .type = NLA_U8 },
882 [IFLA_BRPORT_BACKUP_PORT] = { .type = NLA_U32 },
883 [IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT] = { .type = NLA_U32 },
886 /* Change the state of the port and notify spanning tree */
887 static int br_set_port_state(struct net_bridge_port *p, u8 state)
889 if (state > BR_STATE_BLOCKING)
892 /* if kernel STP is running, don't allow changes */
893 if (p->br->stp_enabled == BR_KERNEL_STP)
896 /* if device is not up, change is not allowed
897 * if link is not present, only allowable state is disabled
899 if (!netif_running(p->dev) ||
900 (!netif_oper_up(p->dev) && state != BR_STATE_DISABLED))
903 br_set_state(p, state);
904 br_port_state_selection(p->br);
908 /* Set/clear or port flags based on attribute */
909 static void br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[],
910 int attrtype, unsigned long mask)
915 if (nla_get_u8(tb[attrtype]))
921 /* Process bridge protocol info on port */
922 static int br_setport(struct net_bridge_port *p, struct nlattr *tb[],
923 struct netlink_ext_ack *extack)
925 unsigned long old_flags, changed_mask;
926 bool br_vlan_tunnel_old;
929 old_flags = p->flags;
930 br_vlan_tunnel_old = (old_flags & BR_VLAN_TUNNEL) ? true : false;
932 br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE);
933 br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD);
934 br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE,
935 BR_MULTICAST_FAST_LEAVE);
936 br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK);
937 br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING);
938 br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD);
939 br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_FLOOD, BR_MCAST_FLOOD);
940 br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_TO_UCAST,
941 BR_MULTICAST_TO_UNICAST);
942 br_set_port_flag(p, tb, IFLA_BRPORT_BCAST_FLOOD, BR_BCAST_FLOOD);
943 br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP);
944 br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI);
945 br_set_port_flag(p, tb, IFLA_BRPORT_VLAN_TUNNEL, BR_VLAN_TUNNEL);
946 br_set_port_flag(p, tb, IFLA_BRPORT_NEIGH_SUPPRESS, BR_NEIGH_SUPPRESS);
947 br_set_port_flag(p, tb, IFLA_BRPORT_ISOLATED, BR_ISOLATED);
948 br_set_port_flag(p, tb, IFLA_BRPORT_LOCKED, BR_PORT_LOCKED);
949 br_set_port_flag(p, tb, IFLA_BRPORT_MAB, BR_PORT_MAB);
951 if ((p->flags & BR_PORT_MAB) &&
952 (!(p->flags & BR_PORT_LOCKED) || !(p->flags & BR_LEARNING))) {
953 NL_SET_ERR_MSG(extack, "Bridge port must be locked and have learning enabled when MAB is enabled");
954 p->flags = old_flags;
956 } else if (!(p->flags & BR_PORT_MAB) && (old_flags & BR_PORT_MAB)) {
957 struct net_bridge_fdb_flush_desc desc = {
958 .flags = BIT(BR_FDB_LOCKED),
959 .flags_mask = BIT(BR_FDB_LOCKED),
960 .port_ifindex = p->dev->ifindex,
963 br_fdb_flush(p->br, &desc);
966 changed_mask = old_flags ^ p->flags;
968 err = br_switchdev_set_port_flag(p, p->flags, changed_mask, extack);
970 p->flags = old_flags;
974 if (br_vlan_tunnel_old && !(p->flags & BR_VLAN_TUNNEL))
975 nbp_vlan_tunnel_info_flush(p);
977 br_port_flags_change(p, changed_mask);
979 if (tb[IFLA_BRPORT_COST]) {
980 err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST]));
985 if (tb[IFLA_BRPORT_PRIORITY]) {
986 err = br_stp_set_port_priority(p, nla_get_u16(tb[IFLA_BRPORT_PRIORITY]));
991 if (tb[IFLA_BRPORT_STATE]) {
992 err = br_set_port_state(p, nla_get_u8(tb[IFLA_BRPORT_STATE]));
997 if (tb[IFLA_BRPORT_FLUSH])
998 br_fdb_delete_by_port(p->br, p, 0, 0);
1000 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1001 if (tb[IFLA_BRPORT_MULTICAST_ROUTER]) {
1002 u8 mcast_router = nla_get_u8(tb[IFLA_BRPORT_MULTICAST_ROUTER]);
1004 err = br_multicast_set_port_router(&p->multicast_ctx,
1010 if (tb[IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT]) {
1013 hlimit = nla_get_u32(tb[IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT]);
1014 err = br_multicast_eht_set_hosts_limit(p, hlimit);
1020 if (tb[IFLA_BRPORT_GROUP_FWD_MASK]) {
1021 u16 fwd_mask = nla_get_u16(tb[IFLA_BRPORT_GROUP_FWD_MASK]);
1023 if (fwd_mask & BR_GROUPFWD_MACPAUSE)
1025 p->group_fwd_mask = fwd_mask;
1028 if (tb[IFLA_BRPORT_BACKUP_PORT]) {
1029 struct net_device *backup_dev = NULL;
1032 backup_ifindex = nla_get_u32(tb[IFLA_BRPORT_BACKUP_PORT]);
1033 if (backup_ifindex) {
1034 backup_dev = __dev_get_by_index(dev_net(p->dev),
1040 err = nbp_backup_change(p, backup_dev);
1048 /* Change state and parameters on port. */
1049 int br_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags,
1050 struct netlink_ext_ack *extack)
1052 struct net_bridge *br = (struct net_bridge *)netdev_priv(dev);
1053 struct nlattr *tb[IFLA_BRPORT_MAX + 1];
1054 struct net_bridge_port *p;
1055 struct nlattr *protinfo;
1056 struct nlattr *afspec;
1057 bool changed = false;
1060 protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO);
1061 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
1062 if (!protinfo && !afspec)
1065 p = br_port_get_rtnl(dev);
1066 /* We want to accept dev as bridge itself if the AF_SPEC
1067 * is set to see if someone is setting vlan info on the bridge
1072 if (p && protinfo) {
1073 if (protinfo->nla_type & NLA_F_NESTED) {
1074 err = nla_parse_nested_deprecated(tb, IFLA_BRPORT_MAX,
1081 spin_lock_bh(&p->br->lock);
1082 err = br_setport(p, tb, extack);
1083 spin_unlock_bh(&p->br->lock);
1085 /* Binary compatibility with old RSTP */
1086 if (nla_len(protinfo) < sizeof(u8))
1089 spin_lock_bh(&p->br->lock);
1090 err = br_set_port_state(p, nla_get_u8(protinfo));
1091 spin_unlock_bh(&p->br->lock);
1099 err = br_afspec(br, p, afspec, RTM_SETLINK, &changed, extack);
1102 br_ifinfo_notify(RTM_NEWLINK, br, p);
1107 /* Delete port information */
1108 int br_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags)
1110 struct net_bridge *br = (struct net_bridge *)netdev_priv(dev);
1111 struct net_bridge_port *p;
1112 struct nlattr *afspec;
1113 bool changed = false;
1116 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
1120 p = br_port_get_rtnl(dev);
1121 /* We want to accept dev as bridge itself as well */
1122 if (!p && !netif_is_bridge_master(dev))
1125 err = br_afspec(br, p, afspec, RTM_DELLINK, &changed, NULL);
1127 /* Send RTM_NEWLINK because userspace
1128 * expects RTM_NEWLINK for vlan dels
1130 br_ifinfo_notify(RTM_NEWLINK, br, p);
1135 static int br_validate(struct nlattr *tb[], struct nlattr *data[],
1136 struct netlink_ext_ack *extack)
1138 if (tb[IFLA_ADDRESS]) {
1139 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
1141 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
1142 return -EADDRNOTAVAIL;
1148 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1149 if (data[IFLA_BR_VLAN_PROTOCOL] &&
1150 !eth_type_vlan(nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL])))
1151 return -EPROTONOSUPPORT;
1153 if (data[IFLA_BR_VLAN_DEFAULT_PVID]) {
1154 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]);
1156 if (defpvid >= VLAN_VID_MASK)
1164 static int br_port_slave_changelink(struct net_device *brdev,
1165 struct net_device *dev,
1166 struct nlattr *tb[],
1167 struct nlattr *data[],
1168 struct netlink_ext_ack *extack)
1170 struct net_bridge *br = netdev_priv(brdev);
1176 spin_lock_bh(&br->lock);
1177 ret = br_setport(br_port_get_rtnl(dev), data, extack);
1178 spin_unlock_bh(&br->lock);
1183 static int br_port_fill_slave_info(struct sk_buff *skb,
1184 const struct net_device *brdev,
1185 const struct net_device *dev)
1187 return br_port_fill_attrs(skb, br_port_get_rtnl(dev));
1190 static size_t br_port_get_slave_size(const struct net_device *brdev,
1191 const struct net_device *dev)
1193 return br_port_info_size();
1196 static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = {
1197 [IFLA_BR_FORWARD_DELAY] = { .type = NLA_U32 },
1198 [IFLA_BR_HELLO_TIME] = { .type = NLA_U32 },
1199 [IFLA_BR_MAX_AGE] = { .type = NLA_U32 },
1200 [IFLA_BR_AGEING_TIME] = { .type = NLA_U32 },
1201 [IFLA_BR_STP_STATE] = { .type = NLA_U32 },
1202 [IFLA_BR_PRIORITY] = { .type = NLA_U16 },
1203 [IFLA_BR_VLAN_FILTERING] = { .type = NLA_U8 },
1204 [IFLA_BR_VLAN_PROTOCOL] = { .type = NLA_U16 },
1205 [IFLA_BR_GROUP_FWD_MASK] = { .type = NLA_U16 },
1206 [IFLA_BR_GROUP_ADDR] = { .type = NLA_BINARY,
1208 [IFLA_BR_MCAST_ROUTER] = { .type = NLA_U8 },
1209 [IFLA_BR_MCAST_SNOOPING] = { .type = NLA_U8 },
1210 [IFLA_BR_MCAST_QUERY_USE_IFADDR] = { .type = NLA_U8 },
1211 [IFLA_BR_MCAST_QUERIER] = { .type = NLA_U8 },
1212 [IFLA_BR_MCAST_HASH_ELASTICITY] = { .type = NLA_U32 },
1213 [IFLA_BR_MCAST_HASH_MAX] = { .type = NLA_U32 },
1214 [IFLA_BR_MCAST_LAST_MEMBER_CNT] = { .type = NLA_U32 },
1215 [IFLA_BR_MCAST_STARTUP_QUERY_CNT] = { .type = NLA_U32 },
1216 [IFLA_BR_MCAST_LAST_MEMBER_INTVL] = { .type = NLA_U64 },
1217 [IFLA_BR_MCAST_MEMBERSHIP_INTVL] = { .type = NLA_U64 },
1218 [IFLA_BR_MCAST_QUERIER_INTVL] = { .type = NLA_U64 },
1219 [IFLA_BR_MCAST_QUERY_INTVL] = { .type = NLA_U64 },
1220 [IFLA_BR_MCAST_QUERY_RESPONSE_INTVL] = { .type = NLA_U64 },
1221 [IFLA_BR_MCAST_STARTUP_QUERY_INTVL] = { .type = NLA_U64 },
1222 [IFLA_BR_NF_CALL_IPTABLES] = { .type = NLA_U8 },
1223 [IFLA_BR_NF_CALL_IP6TABLES] = { .type = NLA_U8 },
1224 [IFLA_BR_NF_CALL_ARPTABLES] = { .type = NLA_U8 },
1225 [IFLA_BR_VLAN_DEFAULT_PVID] = { .type = NLA_U16 },
1226 [IFLA_BR_VLAN_STATS_ENABLED] = { .type = NLA_U8 },
1227 [IFLA_BR_MCAST_STATS_ENABLED] = { .type = NLA_U8 },
1228 [IFLA_BR_MCAST_IGMP_VERSION] = { .type = NLA_U8 },
1229 [IFLA_BR_MCAST_MLD_VERSION] = { .type = NLA_U8 },
1230 [IFLA_BR_VLAN_STATS_PER_PORT] = { .type = NLA_U8 },
1231 [IFLA_BR_MULTI_BOOLOPT] =
1232 NLA_POLICY_EXACT_LEN(sizeof(struct br_boolopt_multi)),
1235 static int br_changelink(struct net_device *brdev, struct nlattr *tb[],
1236 struct nlattr *data[],
1237 struct netlink_ext_ack *extack)
1239 struct net_bridge *br = netdev_priv(brdev);
1245 if (data[IFLA_BR_FORWARD_DELAY]) {
1246 err = br_set_forward_delay(br, nla_get_u32(data[IFLA_BR_FORWARD_DELAY]));
1251 if (data[IFLA_BR_HELLO_TIME]) {
1252 err = br_set_hello_time(br, nla_get_u32(data[IFLA_BR_HELLO_TIME]));
1257 if (data[IFLA_BR_MAX_AGE]) {
1258 err = br_set_max_age(br, nla_get_u32(data[IFLA_BR_MAX_AGE]));
1263 if (data[IFLA_BR_AGEING_TIME]) {
1264 err = br_set_ageing_time(br, nla_get_u32(data[IFLA_BR_AGEING_TIME]));
1269 if (data[IFLA_BR_STP_STATE]) {
1270 u32 stp_enabled = nla_get_u32(data[IFLA_BR_STP_STATE]);
1272 err = br_stp_set_enabled(br, stp_enabled, extack);
1277 if (data[IFLA_BR_PRIORITY]) {
1278 u32 priority = nla_get_u16(data[IFLA_BR_PRIORITY]);
1280 br_stp_set_bridge_priority(br, priority);
1283 if (data[IFLA_BR_VLAN_FILTERING]) {
1284 u8 vlan_filter = nla_get_u8(data[IFLA_BR_VLAN_FILTERING]);
1286 err = br_vlan_filter_toggle(br, vlan_filter, extack);
1291 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1292 if (data[IFLA_BR_VLAN_PROTOCOL]) {
1293 __be16 vlan_proto = nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL]);
1295 err = __br_vlan_set_proto(br, vlan_proto, extack);
1300 if (data[IFLA_BR_VLAN_DEFAULT_PVID]) {
1301 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]);
1303 err = __br_vlan_set_default_pvid(br, defpvid, extack);
1308 if (data[IFLA_BR_VLAN_STATS_ENABLED]) {
1309 __u8 vlan_stats = nla_get_u8(data[IFLA_BR_VLAN_STATS_ENABLED]);
1311 err = br_vlan_set_stats(br, vlan_stats);
1316 if (data[IFLA_BR_VLAN_STATS_PER_PORT]) {
1317 __u8 per_port = nla_get_u8(data[IFLA_BR_VLAN_STATS_PER_PORT]);
1319 err = br_vlan_set_stats_per_port(br, per_port);
1325 if (data[IFLA_BR_GROUP_FWD_MASK]) {
1326 u16 fwd_mask = nla_get_u16(data[IFLA_BR_GROUP_FWD_MASK]);
1328 if (fwd_mask & BR_GROUPFWD_RESTRICTED)
1330 br->group_fwd_mask = fwd_mask;
1333 if (data[IFLA_BR_GROUP_ADDR]) {
1334 u8 new_addr[ETH_ALEN];
1336 if (nla_len(data[IFLA_BR_GROUP_ADDR]) != ETH_ALEN)
1338 memcpy(new_addr, nla_data(data[IFLA_BR_GROUP_ADDR]), ETH_ALEN);
1339 if (!is_link_local_ether_addr(new_addr))
1341 if (new_addr[5] == 1 || /* 802.3x Pause address */
1342 new_addr[5] == 2 || /* 802.3ad Slow protocols */
1343 new_addr[5] == 3) /* 802.1X PAE address */
1345 spin_lock_bh(&br->lock);
1346 memcpy(br->group_addr, new_addr, sizeof(br->group_addr));
1347 spin_unlock_bh(&br->lock);
1348 br_opt_toggle(br, BROPT_GROUP_ADDR_SET, true);
1349 br_recalculate_fwd_mask(br);
1352 if (data[IFLA_BR_FDB_FLUSH]) {
1353 struct net_bridge_fdb_flush_desc desc = {
1354 .flags_mask = BIT(BR_FDB_STATIC)
1357 br_fdb_flush(br, &desc);
1360 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1361 if (data[IFLA_BR_MCAST_ROUTER]) {
1362 u8 multicast_router = nla_get_u8(data[IFLA_BR_MCAST_ROUTER]);
1364 err = br_multicast_set_router(&br->multicast_ctx,
1370 if (data[IFLA_BR_MCAST_SNOOPING]) {
1371 u8 mcast_snooping = nla_get_u8(data[IFLA_BR_MCAST_SNOOPING]);
1373 err = br_multicast_toggle(br, mcast_snooping, extack);
1378 if (data[IFLA_BR_MCAST_QUERY_USE_IFADDR]) {
1381 val = nla_get_u8(data[IFLA_BR_MCAST_QUERY_USE_IFADDR]);
1382 br_opt_toggle(br, BROPT_MULTICAST_QUERY_USE_IFADDR, !!val);
1385 if (data[IFLA_BR_MCAST_QUERIER]) {
1386 u8 mcast_querier = nla_get_u8(data[IFLA_BR_MCAST_QUERIER]);
1388 err = br_multicast_set_querier(&br->multicast_ctx,
1394 if (data[IFLA_BR_MCAST_HASH_ELASTICITY])
1395 br_warn(br, "the hash_elasticity option has been deprecated and is always %u\n",
1398 if (data[IFLA_BR_MCAST_HASH_MAX])
1399 br->hash_max = nla_get_u32(data[IFLA_BR_MCAST_HASH_MAX]);
1401 if (data[IFLA_BR_MCAST_LAST_MEMBER_CNT]) {
1402 u32 val = nla_get_u32(data[IFLA_BR_MCAST_LAST_MEMBER_CNT]);
1404 br->multicast_ctx.multicast_last_member_count = val;
1407 if (data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]) {
1408 u32 val = nla_get_u32(data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]);
1410 br->multicast_ctx.multicast_startup_query_count = val;
1413 if (data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]) {
1414 u64 val = nla_get_u64(data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]);
1416 br->multicast_ctx.multicast_last_member_interval = clock_t_to_jiffies(val);
1419 if (data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]) {
1420 u64 val = nla_get_u64(data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]);
1422 br->multicast_ctx.multicast_membership_interval = clock_t_to_jiffies(val);
1425 if (data[IFLA_BR_MCAST_QUERIER_INTVL]) {
1426 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERIER_INTVL]);
1428 br->multicast_ctx.multicast_querier_interval = clock_t_to_jiffies(val);
1431 if (data[IFLA_BR_MCAST_QUERY_INTVL]) {
1432 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_INTVL]);
1434 br_multicast_set_query_intvl(&br->multicast_ctx, val);
1437 if (data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]) {
1438 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]);
1440 br->multicast_ctx.multicast_query_response_interval = clock_t_to_jiffies(val);
1443 if (data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]) {
1444 u64 val = nla_get_u64(data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]);
1446 br_multicast_set_startup_query_intvl(&br->multicast_ctx, val);
1449 if (data[IFLA_BR_MCAST_STATS_ENABLED]) {
1452 mcast_stats = nla_get_u8(data[IFLA_BR_MCAST_STATS_ENABLED]);
1453 br_opt_toggle(br, BROPT_MULTICAST_STATS_ENABLED, !!mcast_stats);
1456 if (data[IFLA_BR_MCAST_IGMP_VERSION]) {
1459 igmp_version = nla_get_u8(data[IFLA_BR_MCAST_IGMP_VERSION]);
1460 err = br_multicast_set_igmp_version(&br->multicast_ctx,
1466 #if IS_ENABLED(CONFIG_IPV6)
1467 if (data[IFLA_BR_MCAST_MLD_VERSION]) {
1470 mld_version = nla_get_u8(data[IFLA_BR_MCAST_MLD_VERSION]);
1471 err = br_multicast_set_mld_version(&br->multicast_ctx,
1478 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1479 if (data[IFLA_BR_NF_CALL_IPTABLES]) {
1480 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IPTABLES]);
1482 br_opt_toggle(br, BROPT_NF_CALL_IPTABLES, !!val);
1485 if (data[IFLA_BR_NF_CALL_IP6TABLES]) {
1486 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IP6TABLES]);
1488 br_opt_toggle(br, BROPT_NF_CALL_IP6TABLES, !!val);
1491 if (data[IFLA_BR_NF_CALL_ARPTABLES]) {
1492 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_ARPTABLES]);
1494 br_opt_toggle(br, BROPT_NF_CALL_ARPTABLES, !!val);
1498 if (data[IFLA_BR_MULTI_BOOLOPT]) {
1499 struct br_boolopt_multi *bm;
1501 bm = nla_data(data[IFLA_BR_MULTI_BOOLOPT]);
1502 err = br_boolopt_multi_toggle(br, bm, extack);
1510 static int br_dev_newlink(struct net *src_net, struct net_device *dev,
1511 struct nlattr *tb[], struct nlattr *data[],
1512 struct netlink_ext_ack *extack)
1514 struct net_bridge *br = netdev_priv(dev);
1517 err = register_netdevice(dev);
1521 if (tb[IFLA_ADDRESS]) {
1522 spin_lock_bh(&br->lock);
1523 br_stp_change_bridge_id(br, nla_data(tb[IFLA_ADDRESS]));
1524 spin_unlock_bh(&br->lock);
1527 err = br_changelink(dev, tb, data, extack);
1529 br_dev_delete(dev, NULL);
1534 static size_t br_get_size(const struct net_device *brdev)
1536 return nla_total_size(sizeof(u32)) + /* IFLA_BR_FORWARD_DELAY */
1537 nla_total_size(sizeof(u32)) + /* IFLA_BR_HELLO_TIME */
1538 nla_total_size(sizeof(u32)) + /* IFLA_BR_MAX_AGE */
1539 nla_total_size(sizeof(u32)) + /* IFLA_BR_AGEING_TIME */
1540 nla_total_size(sizeof(u32)) + /* IFLA_BR_STP_STATE */
1541 nla_total_size(sizeof(u16)) + /* IFLA_BR_PRIORITY */
1542 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_FILTERING */
1543 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1544 nla_total_size(sizeof(__be16)) + /* IFLA_BR_VLAN_PROTOCOL */
1545 nla_total_size(sizeof(u16)) + /* IFLA_BR_VLAN_DEFAULT_PVID */
1546 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_ENABLED */
1547 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_PER_PORT */
1549 nla_total_size(sizeof(u16)) + /* IFLA_BR_GROUP_FWD_MASK */
1550 nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_ROOT_ID */
1551 nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_BRIDGE_ID */
1552 nla_total_size(sizeof(u16)) + /* IFLA_BR_ROOT_PORT */
1553 nla_total_size(sizeof(u32)) + /* IFLA_BR_ROOT_PATH_COST */
1554 nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE */
1555 nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE_DETECTED */
1556 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_HELLO_TIMER */
1557 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TCN_TIMER */
1558 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TOPOLOGY_CHANGE_TIMER */
1559 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_GC_TIMER */
1560 nla_total_size(ETH_ALEN) + /* IFLA_BR_GROUP_ADDR */
1561 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1562 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_ROUTER */
1563 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_SNOOPING */
1564 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERY_USE_IFADDR */
1565 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERIER */
1566 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_STATS_ENABLED */
1567 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_ELASTICITY */
1568 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_MAX */
1569 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_LAST_MEMBER_CNT */
1570 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_STARTUP_QUERY_CNT */
1571 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_LAST_MEMBER_INTVL */
1572 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_MEMBERSHIP_INTVL */
1573 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERIER_INTVL */
1574 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_INTVL */
1575 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_RESPONSE_INTVL */
1576 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_STARTUP_QUERY_INTVL */
1577 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_IGMP_VERSION */
1578 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_MLD_VERSION */
1579 br_multicast_querier_state_size() + /* IFLA_BR_MCAST_QUERIER_STATE */
1581 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1582 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IPTABLES */
1583 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IP6TABLES */
1584 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_ARPTABLES */
1586 nla_total_size(sizeof(struct br_boolopt_multi)) + /* IFLA_BR_MULTI_BOOLOPT */
1590 static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev)
1592 struct net_bridge *br = netdev_priv(brdev);
1593 u32 forward_delay = jiffies_to_clock_t(br->forward_delay);
1594 u32 hello_time = jiffies_to_clock_t(br->hello_time);
1595 u32 age_time = jiffies_to_clock_t(br->max_age);
1596 u32 ageing_time = jiffies_to_clock_t(br->ageing_time);
1597 u32 stp_enabled = br->stp_enabled;
1598 u16 priority = (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1];
1599 u8 vlan_enabled = br_vlan_enabled(br->dev);
1600 struct br_boolopt_multi bm;
1603 clockval = br_timer_value(&br->hello_timer);
1604 if (nla_put_u64_64bit(skb, IFLA_BR_HELLO_TIMER, clockval, IFLA_BR_PAD))
1606 clockval = br_timer_value(&br->tcn_timer);
1607 if (nla_put_u64_64bit(skb, IFLA_BR_TCN_TIMER, clockval, IFLA_BR_PAD))
1609 clockval = br_timer_value(&br->topology_change_timer);
1610 if (nla_put_u64_64bit(skb, IFLA_BR_TOPOLOGY_CHANGE_TIMER, clockval,
1613 clockval = br_timer_value(&br->gc_work.timer);
1614 if (nla_put_u64_64bit(skb, IFLA_BR_GC_TIMER, clockval, IFLA_BR_PAD))
1617 br_boolopt_multi_get(br, &bm);
1618 if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) ||
1619 nla_put_u32(skb, IFLA_BR_HELLO_TIME, hello_time) ||
1620 nla_put_u32(skb, IFLA_BR_MAX_AGE, age_time) ||
1621 nla_put_u32(skb, IFLA_BR_AGEING_TIME, ageing_time) ||
1622 nla_put_u32(skb, IFLA_BR_STP_STATE, stp_enabled) ||
1623 nla_put_u16(skb, IFLA_BR_PRIORITY, priority) ||
1624 nla_put_u8(skb, IFLA_BR_VLAN_FILTERING, vlan_enabled) ||
1625 nla_put_u16(skb, IFLA_BR_GROUP_FWD_MASK, br->group_fwd_mask) ||
1626 nla_put(skb, IFLA_BR_BRIDGE_ID, sizeof(struct ifla_bridge_id),
1628 nla_put(skb, IFLA_BR_ROOT_ID, sizeof(struct ifla_bridge_id),
1629 &br->designated_root) ||
1630 nla_put_u16(skb, IFLA_BR_ROOT_PORT, br->root_port) ||
1631 nla_put_u32(skb, IFLA_BR_ROOT_PATH_COST, br->root_path_cost) ||
1632 nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE, br->topology_change) ||
1633 nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE_DETECTED,
1634 br->topology_change_detected) ||
1635 nla_put(skb, IFLA_BR_GROUP_ADDR, ETH_ALEN, br->group_addr) ||
1636 nla_put(skb, IFLA_BR_MULTI_BOOLOPT, sizeof(bm), &bm))
1639 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1640 if (nla_put_be16(skb, IFLA_BR_VLAN_PROTOCOL, br->vlan_proto) ||
1641 nla_put_u16(skb, IFLA_BR_VLAN_DEFAULT_PVID, br->default_pvid) ||
1642 nla_put_u8(skb, IFLA_BR_VLAN_STATS_ENABLED,
1643 br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) ||
1644 nla_put_u8(skb, IFLA_BR_VLAN_STATS_PER_PORT,
1645 br_opt_get(br, BROPT_VLAN_STATS_PER_PORT)))
1648 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1649 if (nla_put_u8(skb, IFLA_BR_MCAST_ROUTER,
1650 br->multicast_ctx.multicast_router) ||
1651 nla_put_u8(skb, IFLA_BR_MCAST_SNOOPING,
1652 br_opt_get(br, BROPT_MULTICAST_ENABLED)) ||
1653 nla_put_u8(skb, IFLA_BR_MCAST_QUERY_USE_IFADDR,
1654 br_opt_get(br, BROPT_MULTICAST_QUERY_USE_IFADDR)) ||
1655 nla_put_u8(skb, IFLA_BR_MCAST_QUERIER,
1656 br->multicast_ctx.multicast_querier) ||
1657 nla_put_u8(skb, IFLA_BR_MCAST_STATS_ENABLED,
1658 br_opt_get(br, BROPT_MULTICAST_STATS_ENABLED)) ||
1659 nla_put_u32(skb, IFLA_BR_MCAST_HASH_ELASTICITY, RHT_ELASTICITY) ||
1660 nla_put_u32(skb, IFLA_BR_MCAST_HASH_MAX, br->hash_max) ||
1661 nla_put_u32(skb, IFLA_BR_MCAST_LAST_MEMBER_CNT,
1662 br->multicast_ctx.multicast_last_member_count) ||
1663 nla_put_u32(skb, IFLA_BR_MCAST_STARTUP_QUERY_CNT,
1664 br->multicast_ctx.multicast_startup_query_count) ||
1665 nla_put_u8(skb, IFLA_BR_MCAST_IGMP_VERSION,
1666 br->multicast_ctx.multicast_igmp_version) ||
1667 br_multicast_dump_querier_state(skb, &br->multicast_ctx,
1668 IFLA_BR_MCAST_QUERIER_STATE))
1670 #if IS_ENABLED(CONFIG_IPV6)
1671 if (nla_put_u8(skb, IFLA_BR_MCAST_MLD_VERSION,
1672 br->multicast_ctx.multicast_mld_version))
1675 clockval = jiffies_to_clock_t(br->multicast_ctx.multicast_last_member_interval);
1676 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_LAST_MEMBER_INTVL, clockval,
1679 clockval = jiffies_to_clock_t(br->multicast_ctx.multicast_membership_interval);
1680 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_MEMBERSHIP_INTVL, clockval,
1683 clockval = jiffies_to_clock_t(br->multicast_ctx.multicast_querier_interval);
1684 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERIER_INTVL, clockval,
1687 clockval = jiffies_to_clock_t(br->multicast_ctx.multicast_query_interval);
1688 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_INTVL, clockval,
1691 clockval = jiffies_to_clock_t(br->multicast_ctx.multicast_query_response_interval);
1692 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_RESPONSE_INTVL, clockval,
1695 clockval = jiffies_to_clock_t(br->multicast_ctx.multicast_startup_query_interval);
1696 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_STARTUP_QUERY_INTVL, clockval,
1700 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1701 if (nla_put_u8(skb, IFLA_BR_NF_CALL_IPTABLES,
1702 br_opt_get(br, BROPT_NF_CALL_IPTABLES) ? 1 : 0) ||
1703 nla_put_u8(skb, IFLA_BR_NF_CALL_IP6TABLES,
1704 br_opt_get(br, BROPT_NF_CALL_IP6TABLES) ? 1 : 0) ||
1705 nla_put_u8(skb, IFLA_BR_NF_CALL_ARPTABLES,
1706 br_opt_get(br, BROPT_NF_CALL_ARPTABLES) ? 1 : 0))
1713 static size_t br_get_linkxstats_size(const struct net_device *dev, int attr)
1715 struct net_bridge_port *p = NULL;
1716 struct net_bridge_vlan_group *vg;
1717 struct net_bridge_vlan *v;
1718 struct net_bridge *br;
1722 case IFLA_STATS_LINK_XSTATS:
1723 br = netdev_priv(dev);
1724 vg = br_vlan_group(br);
1726 case IFLA_STATS_LINK_XSTATS_SLAVE:
1727 p = br_port_get_rtnl(dev);
1730 vg = nbp_vlan_group(p);
1737 /* we need to count all, even placeholder entries */
1738 list_for_each_entry(v, &vg->vlan_list, vlist)
1742 return numvls * nla_total_size(sizeof(struct bridge_vlan_xstats)) +
1743 nla_total_size_64bit(sizeof(struct br_mcast_stats)) +
1744 (p ? nla_total_size_64bit(sizeof(p->stp_xstats)) : 0) +
1748 static int br_fill_linkxstats(struct sk_buff *skb,
1749 const struct net_device *dev,
1750 int *prividx, int attr)
1752 struct nlattr *nla __maybe_unused;
1753 struct net_bridge_port *p = NULL;
1754 struct net_bridge_vlan_group *vg;
1755 struct net_bridge_vlan *v;
1756 struct net_bridge *br;
1757 struct nlattr *nest;
1761 case IFLA_STATS_LINK_XSTATS:
1762 br = netdev_priv(dev);
1763 vg = br_vlan_group(br);
1765 case IFLA_STATS_LINK_XSTATS_SLAVE:
1766 p = br_port_get_rtnl(dev);
1770 vg = nbp_vlan_group(p);
1776 nest = nla_nest_start_noflag(skb, LINK_XSTATS_TYPE_BRIDGE);
1783 pvid = br_get_pvid(vg);
1784 list_for_each_entry(v, &vg->vlan_list, vlist) {
1785 struct bridge_vlan_xstats vxi;
1786 struct pcpu_sw_netstats stats;
1788 if (++vl_idx < *prividx)
1790 memset(&vxi, 0, sizeof(vxi));
1792 vxi.flags = v->flags;
1794 vxi.flags |= BRIDGE_VLAN_INFO_PVID;
1795 br_vlan_get_stats(v, &stats);
1796 vxi.rx_bytes = u64_stats_read(&stats.rx_bytes);
1797 vxi.rx_packets = u64_stats_read(&stats.rx_packets);
1798 vxi.tx_bytes = u64_stats_read(&stats.tx_bytes);
1799 vxi.tx_packets = u64_stats_read(&stats.tx_packets);
1801 if (nla_put(skb, BRIDGE_XSTATS_VLAN, sizeof(vxi), &vxi))
1802 goto nla_put_failure;
1806 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1807 if (++vl_idx >= *prividx) {
1808 nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_MCAST,
1809 sizeof(struct br_mcast_stats),
1812 goto nla_put_failure;
1813 br_multicast_get_stats(br, p, nla_data(nla));
1818 nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_STP,
1819 sizeof(p->stp_xstats),
1822 goto nla_put_failure;
1824 spin_lock_bh(&br->lock);
1825 memcpy(nla_data(nla), &p->stp_xstats, sizeof(p->stp_xstats));
1826 spin_unlock_bh(&br->lock);
1829 nla_nest_end(skb, nest);
1835 nla_nest_end(skb, nest);
1841 static struct rtnl_af_ops br_af_ops __read_mostly = {
1842 .family = AF_BRIDGE,
1843 .get_link_af_size = br_get_link_af_size_filtered,
1846 struct rtnl_link_ops br_link_ops __read_mostly = {
1848 .priv_size = sizeof(struct net_bridge),
1849 .setup = br_dev_setup,
1850 .maxtype = IFLA_BR_MAX,
1851 .policy = br_policy,
1852 .validate = br_validate,
1853 .newlink = br_dev_newlink,
1854 .changelink = br_changelink,
1855 .dellink = br_dev_delete,
1856 .get_size = br_get_size,
1857 .fill_info = br_fill_info,
1858 .fill_linkxstats = br_fill_linkxstats,
1859 .get_linkxstats_size = br_get_linkxstats_size,
1861 .slave_maxtype = IFLA_BRPORT_MAX,
1862 .slave_policy = br_port_policy,
1863 .slave_changelink = br_port_slave_changelink,
1864 .get_slave_size = br_port_get_slave_size,
1865 .fill_slave_info = br_port_fill_slave_info,
1868 int __init br_netlink_init(void)
1873 br_vlan_rtnl_init();
1874 rtnl_af_register(&br_af_ops);
1876 err = rtnl_link_register(&br_link_ops);
1883 rtnl_af_unregister(&br_af_ops);
1888 void br_netlink_fini(void)
1891 br_vlan_rtnl_uninit();
1892 rtnl_af_unregister(&br_af_ops);
1893 rtnl_link_unregister(&br_link_ops);