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_rcu(dev);
107 vg = nbp_vlan_group_rcu(p);
108 } else if (dev->priv_flags & IFF_EBRIDGE) {
109 br = netdev_priv(dev);
110 vg = br_vlan_group_rcu(br);
112 num_vlan_infos = br_get_num_vlan_infos(vg, filter_mask);
115 if (p && (p->flags & BR_VLAN_TUNNEL))
116 vinfo_sz += br_get_vlan_tunnel_info_size(vg);
118 /* Each VLAN is returned in bridge_vlan_info along with flags */
119 vinfo_sz += num_vlan_infos * nla_total_size(sizeof(struct bridge_vlan_info));
121 if (!(filter_mask & RTEXT_FILTER_CFM_STATUS))
127 /* CFM status info must be added */
128 br_cfm_mep_count(br, &num_cfm_mep_infos);
129 br_cfm_peer_mep_count(br, &num_cfm_peer_mep_infos);
131 vinfo_sz += nla_total_size(0); /* IFLA_BRIDGE_CFM */
132 /* For each status struct the MEP instance (u32) is added */
133 /* MEP instance (u32) + br_cfm_mep_status */
134 vinfo_sz += num_cfm_mep_infos *
135 /*IFLA_BRIDGE_CFM_MEP_STATUS_INSTANCE */
136 (nla_total_size(sizeof(u32))
137 /* IFLA_BRIDGE_CFM_MEP_STATUS_OPCODE_UNEXP_SEEN */
138 + nla_total_size(sizeof(u32))
139 /* IFLA_BRIDGE_CFM_MEP_STATUS_VERSION_UNEXP_SEEN */
140 + nla_total_size(sizeof(u32))
141 /* IFLA_BRIDGE_CFM_MEP_STATUS_RX_LEVEL_LOW_SEEN */
142 + nla_total_size(sizeof(u32)));
143 /* MEP instance (u32) + br_cfm_cc_peer_status */
144 vinfo_sz += num_cfm_peer_mep_infos *
145 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_INSTANCE */
146 (nla_total_size(sizeof(u32))
147 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_PEER_MEPID */
148 + nla_total_size(sizeof(u32))
149 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_CCM_DEFECT */
150 + nla_total_size(sizeof(u32))
151 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_RDI */
152 + nla_total_size(sizeof(u32))
153 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_PORT_TLV_VALUE */
154 + nla_total_size(sizeof(u8))
155 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_IF_TLV_VALUE */
156 + nla_total_size(sizeof(u8))
157 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_SEEN */
158 + nla_total_size(sizeof(u32))
159 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_TLV_SEEN */
160 + nla_total_size(sizeof(u32))
161 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_SEQ_UNEXP_SEEN */
162 + nla_total_size(sizeof(u32)));
167 static inline size_t br_port_info_size(void)
169 return nla_total_size(1) /* IFLA_BRPORT_STATE */
170 + nla_total_size(2) /* IFLA_BRPORT_PRIORITY */
171 + nla_total_size(4) /* IFLA_BRPORT_COST */
172 + nla_total_size(1) /* IFLA_BRPORT_MODE */
173 + nla_total_size(1) /* IFLA_BRPORT_GUARD */
174 + nla_total_size(1) /* IFLA_BRPORT_PROTECT */
175 + nla_total_size(1) /* IFLA_BRPORT_FAST_LEAVE */
176 + nla_total_size(1) /* IFLA_BRPORT_MCAST_TO_UCAST */
177 + nla_total_size(1) /* IFLA_BRPORT_LEARNING */
178 + nla_total_size(1) /* IFLA_BRPORT_UNICAST_FLOOD */
179 + nla_total_size(1) /* IFLA_BRPORT_MCAST_FLOOD */
180 + nla_total_size(1) /* IFLA_BRPORT_BCAST_FLOOD */
181 + nla_total_size(1) /* IFLA_BRPORT_PROXYARP */
182 + nla_total_size(1) /* IFLA_BRPORT_PROXYARP_WIFI */
183 + nla_total_size(1) /* IFLA_BRPORT_VLAN_TUNNEL */
184 + nla_total_size(1) /* IFLA_BRPORT_NEIGH_SUPPRESS */
185 + nla_total_size(1) /* IFLA_BRPORT_ISOLATED */
186 + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_ROOT_ID */
187 + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_BRIDGE_ID */
188 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_DESIGNATED_PORT */
189 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_DESIGNATED_COST */
190 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_ID */
191 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_NO */
192 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_TOPOLOGY_CHANGE_ACK */
193 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_CONFIG_PENDING */
194 + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_MESSAGE_AGE_TIMER */
195 + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_FORWARD_DELAY_TIMER */
196 + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_HOLD_TIMER */
197 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
198 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_MULTICAST_ROUTER */
200 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_GROUP_FWD_MASK */
201 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_MRP_RING_OPEN */
202 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_MRP_IN_OPEN */
203 + nla_total_size(sizeof(u32)) /* IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT */
204 + nla_total_size(sizeof(u32)) /* IFLA_BRPORT_MCAST_EHT_HOSTS_CNT */
208 static inline size_t br_nlmsg_size(struct net_device *dev, u32 filter_mask)
210 return NLMSG_ALIGN(sizeof(struct ifinfomsg))
211 + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */
212 + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */
213 + nla_total_size(4) /* IFLA_MASTER */
214 + nla_total_size(4) /* IFLA_MTU */
215 + nla_total_size(4) /* IFLA_LINK */
216 + nla_total_size(1) /* IFLA_OPERSTATE */
217 + nla_total_size(br_port_info_size()) /* IFLA_PROTINFO */
218 + nla_total_size(br_get_link_af_size_filtered(dev,
219 filter_mask)) /* IFLA_AF_SPEC */
220 + nla_total_size(4); /* IFLA_BRPORT_BACKUP_PORT */
223 static int br_port_fill_attrs(struct sk_buff *skb,
224 const struct net_bridge_port *p)
226 u8 mode = !!(p->flags & BR_HAIRPIN_MODE);
227 struct net_bridge_port *backup_p;
230 if (nla_put_u8(skb, IFLA_BRPORT_STATE, p->state) ||
231 nla_put_u16(skb, IFLA_BRPORT_PRIORITY, p->priority) ||
232 nla_put_u32(skb, IFLA_BRPORT_COST, p->path_cost) ||
233 nla_put_u8(skb, IFLA_BRPORT_MODE, mode) ||
234 nla_put_u8(skb, IFLA_BRPORT_GUARD, !!(p->flags & BR_BPDU_GUARD)) ||
235 nla_put_u8(skb, IFLA_BRPORT_PROTECT,
236 !!(p->flags & BR_ROOT_BLOCK)) ||
237 nla_put_u8(skb, IFLA_BRPORT_FAST_LEAVE,
238 !!(p->flags & BR_MULTICAST_FAST_LEAVE)) ||
239 nla_put_u8(skb, IFLA_BRPORT_MCAST_TO_UCAST,
240 !!(p->flags & BR_MULTICAST_TO_UNICAST)) ||
241 nla_put_u8(skb, IFLA_BRPORT_LEARNING, !!(p->flags & BR_LEARNING)) ||
242 nla_put_u8(skb, IFLA_BRPORT_UNICAST_FLOOD,
243 !!(p->flags & BR_FLOOD)) ||
244 nla_put_u8(skb, IFLA_BRPORT_MCAST_FLOOD,
245 !!(p->flags & BR_MCAST_FLOOD)) ||
246 nla_put_u8(skb, IFLA_BRPORT_BCAST_FLOOD,
247 !!(p->flags & BR_BCAST_FLOOD)) ||
248 nla_put_u8(skb, IFLA_BRPORT_PROXYARP, !!(p->flags & BR_PROXYARP)) ||
249 nla_put_u8(skb, IFLA_BRPORT_PROXYARP_WIFI,
250 !!(p->flags & BR_PROXYARP_WIFI)) ||
251 nla_put(skb, IFLA_BRPORT_ROOT_ID, sizeof(struct ifla_bridge_id),
252 &p->designated_root) ||
253 nla_put(skb, IFLA_BRPORT_BRIDGE_ID, sizeof(struct ifla_bridge_id),
254 &p->designated_bridge) ||
255 nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_PORT, p->designated_port) ||
256 nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_COST, p->designated_cost) ||
257 nla_put_u16(skb, IFLA_BRPORT_ID, p->port_id) ||
258 nla_put_u16(skb, IFLA_BRPORT_NO, p->port_no) ||
259 nla_put_u8(skb, IFLA_BRPORT_TOPOLOGY_CHANGE_ACK,
260 p->topology_change_ack) ||
261 nla_put_u8(skb, IFLA_BRPORT_CONFIG_PENDING, p->config_pending) ||
262 nla_put_u8(skb, IFLA_BRPORT_VLAN_TUNNEL, !!(p->flags &
264 nla_put_u16(skb, IFLA_BRPORT_GROUP_FWD_MASK, p->group_fwd_mask) ||
265 nla_put_u8(skb, IFLA_BRPORT_NEIGH_SUPPRESS,
266 !!(p->flags & BR_NEIGH_SUPPRESS)) ||
267 nla_put_u8(skb, IFLA_BRPORT_MRP_RING_OPEN, !!(p->flags &
268 BR_MRP_LOST_CONT)) ||
269 nla_put_u8(skb, IFLA_BRPORT_MRP_IN_OPEN,
270 !!(p->flags & BR_MRP_LOST_IN_CONT)) ||
271 nla_put_u8(skb, IFLA_BRPORT_ISOLATED, !!(p->flags & BR_ISOLATED)))
274 timerval = br_timer_value(&p->message_age_timer);
275 if (nla_put_u64_64bit(skb, IFLA_BRPORT_MESSAGE_AGE_TIMER, timerval,
278 timerval = br_timer_value(&p->forward_delay_timer);
279 if (nla_put_u64_64bit(skb, IFLA_BRPORT_FORWARD_DELAY_TIMER, timerval,
282 timerval = br_timer_value(&p->hold_timer);
283 if (nla_put_u64_64bit(skb, IFLA_BRPORT_HOLD_TIMER, timerval,
287 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
288 if (nla_put_u8(skb, IFLA_BRPORT_MULTICAST_ROUTER,
289 p->multicast_router) ||
290 nla_put_u32(skb, IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT,
291 p->multicast_eht_hosts_limit) ||
292 nla_put_u32(skb, IFLA_BRPORT_MCAST_EHT_HOSTS_CNT,
293 p->multicast_eht_hosts_cnt))
297 /* we might be called only with br->lock */
299 backup_p = rcu_dereference(p->backup_port);
301 nla_put_u32(skb, IFLA_BRPORT_BACKUP_PORT,
302 backup_p->dev->ifindex);
308 static int br_fill_ifvlaninfo_range(struct sk_buff *skb, u16 vid_start,
309 u16 vid_end, u16 flags)
311 struct bridge_vlan_info vinfo;
313 if ((vid_end - vid_start) > 0) {
314 /* add range to skb */
315 vinfo.vid = vid_start;
316 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_BEGIN;
317 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
318 sizeof(vinfo), &vinfo))
319 goto nla_put_failure;
322 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_END;
323 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
324 sizeof(vinfo), &vinfo))
325 goto nla_put_failure;
327 vinfo.vid = vid_start;
329 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
330 sizeof(vinfo), &vinfo))
331 goto nla_put_failure;
340 static int br_fill_ifvlaninfo_compressed(struct sk_buff *skb,
341 struct net_bridge_vlan_group *vg)
343 struct net_bridge_vlan *v;
344 u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0;
348 /* Pack IFLA_BRIDGE_VLAN_INFO's for every vlan
349 * and mark vlan info with begin and end flags
350 * if vlaninfo represents a range
352 pvid = br_get_pvid(vg);
353 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
355 if (!br_vlan_should_use(v))
358 flags |= BRIDGE_VLAN_INFO_PVID;
360 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
361 flags |= BRIDGE_VLAN_INFO_UNTAGGED;
363 if (vid_range_start == 0) {
365 } else if ((v->vid - vid_range_end) == 1 &&
366 flags == vid_range_flags) {
367 vid_range_end = v->vid;
370 err = br_fill_ifvlaninfo_range(skb, vid_range_start,
378 vid_range_start = v->vid;
379 vid_range_end = v->vid;
380 vid_range_flags = flags;
383 if (vid_range_start != 0) {
384 /* Call it once more to send any left over vlans */
385 err = br_fill_ifvlaninfo_range(skb, vid_range_start,
395 static int br_fill_ifvlaninfo(struct sk_buff *skb,
396 struct net_bridge_vlan_group *vg)
398 struct bridge_vlan_info vinfo;
399 struct net_bridge_vlan *v;
402 pvid = br_get_pvid(vg);
403 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
404 if (!br_vlan_should_use(v))
410 vinfo.flags |= BRIDGE_VLAN_INFO_PVID;
412 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
413 vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED;
415 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
416 sizeof(vinfo), &vinfo))
417 goto nla_put_failure;
427 * Create one netlink message for one interface
428 * Contains port and master info as well as carrier and bridge state.
430 static int br_fill_ifinfo(struct sk_buff *skb,
431 const struct net_bridge_port *port,
432 u32 pid, u32 seq, int event, unsigned int flags,
433 u32 filter_mask, const struct net_device *dev,
436 u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN;
437 struct nlattr *af = NULL;
438 struct net_bridge *br;
439 struct ifinfomsg *hdr;
440 struct nlmsghdr *nlh;
445 br = netdev_priv(dev);
447 br_debug(br, "br_fill_info event %d port %s master %s\n",
448 event, dev->name, br->dev->name);
450 nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags);
454 hdr = nlmsg_data(nlh);
455 hdr->ifi_family = AF_BRIDGE;
457 hdr->ifi_type = dev->type;
458 hdr->ifi_index = dev->ifindex;
459 hdr->ifi_flags = dev_get_flags(dev);
462 if (nla_put_string(skb, IFLA_IFNAME, dev->name) ||
463 nla_put_u32(skb, IFLA_MASTER, br->dev->ifindex) ||
464 nla_put_u32(skb, IFLA_MTU, dev->mtu) ||
465 nla_put_u8(skb, IFLA_OPERSTATE, operstate) ||
467 nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) ||
468 (dev->ifindex != dev_get_iflink(dev) &&
469 nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev))))
470 goto nla_put_failure;
472 if (event == RTM_NEWLINK && port) {
475 nest = nla_nest_start(skb, IFLA_PROTINFO);
476 if (nest == NULL || br_port_fill_attrs(skb, port) < 0)
477 goto nla_put_failure;
478 nla_nest_end(skb, nest);
481 if (filter_mask & (RTEXT_FILTER_BRVLAN |
482 RTEXT_FILTER_BRVLAN_COMPRESSED |
484 RTEXT_FILTER_CFM_CONFIG |
485 RTEXT_FILTER_CFM_STATUS)) {
486 af = nla_nest_start_noflag(skb, IFLA_AF_SPEC);
488 goto nla_put_failure;
491 /* Check if the VID information is requested */
492 if ((filter_mask & RTEXT_FILTER_BRVLAN) ||
493 (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) {
494 struct net_bridge_vlan_group *vg;
497 /* RCU needed because of the VLAN locking rules (rcu || rtnl) */
500 vg = nbp_vlan_group_rcu(port);
502 vg = br_vlan_group_rcu(br);
504 if (!vg || !vg->num_vlans) {
508 if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)
509 err = br_fill_ifvlaninfo_compressed(skb, vg);
511 err = br_fill_ifvlaninfo(skb, vg);
513 if (port && (port->flags & BR_VLAN_TUNNEL))
514 err = br_fill_vlan_tunnel_info(skb, vg);
517 goto nla_put_failure;
520 if (filter_mask & RTEXT_FILTER_MRP) {
523 if (!br_mrp_enabled(br) || port)
527 err = br_mrp_fill_info(skb, br);
531 goto nla_put_failure;
534 if (filter_mask & (RTEXT_FILTER_CFM_CONFIG | RTEXT_FILTER_CFM_STATUS)) {
535 struct nlattr *cfm_nest = NULL;
538 if (!br_cfm_created(br) || port)
541 cfm_nest = nla_nest_start(skb, IFLA_BRIDGE_CFM);
543 goto nla_put_failure;
545 if (filter_mask & RTEXT_FILTER_CFM_CONFIG) {
547 err = br_cfm_config_fill_info(skb, br);
550 goto nla_put_failure;
553 if (filter_mask & RTEXT_FILTER_CFM_STATUS) {
555 err = br_cfm_status_fill_info(skb, br, getlink);
558 goto nla_put_failure;
561 nla_nest_end(skb, cfm_nest);
566 nla_nest_end(skb, af);
571 nlmsg_cancel(skb, nlh);
575 void br_info_notify(int event, const struct net_bridge *br,
576 const struct net_bridge_port *port, u32 filter)
578 struct net_device *dev;
584 if (WARN_ON(!port && !br))
590 port_no = port->port_no;
596 br_debug(br, "port %u(%s) event %d\n", port_no, dev->name, event);
598 skb = nlmsg_new(br_nlmsg_size(dev, filter), GFP_ATOMIC);
602 err = br_fill_ifinfo(skb, port, 0, 0, event, 0, filter, dev, false);
604 /* -EMSGSIZE implies BUG in br_nlmsg_size() */
605 WARN_ON(err == -EMSGSIZE);
609 rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC);
612 rtnl_set_sk_err(net, RTNLGRP_LINK, err);
615 /* Notify listeners of a change in bridge or port information */
616 void br_ifinfo_notify(int event, const struct net_bridge *br,
617 const struct net_bridge_port *port)
619 u32 filter = RTEXT_FILTER_BRVLAN_COMPRESSED;
621 return br_info_notify(event, br, port, filter);
625 * Dump information about all ports, in response to GETLINK
627 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq,
628 struct net_device *dev, u32 filter_mask, int nlflags)
630 struct net_bridge_port *port = br_port_get_rtnl(dev);
632 if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) &&
633 !(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) &&
634 !(filter_mask & RTEXT_FILTER_MRP) &&
635 !(filter_mask & RTEXT_FILTER_CFM_CONFIG) &&
636 !(filter_mask & RTEXT_FILTER_CFM_STATUS))
639 return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags,
640 filter_mask, dev, true);
643 static int br_vlan_info(struct net_bridge *br, struct net_bridge_port *p,
644 int cmd, struct bridge_vlan_info *vinfo, bool *changed,
645 struct netlink_ext_ack *extack)
653 /* if the MASTER flag is set this will act on the global
654 * per-VLAN entry as well
656 err = nbp_vlan_add(p, vinfo->vid, vinfo->flags,
657 &curr_change, extack);
659 vinfo->flags |= BRIDGE_VLAN_INFO_BRENTRY;
660 err = br_vlan_add(br, vinfo->vid, vinfo->flags,
661 &curr_change, extack);
669 if (!nbp_vlan_delete(p, vinfo->vid))
672 if ((vinfo->flags & BRIDGE_VLAN_INFO_MASTER) &&
673 !br_vlan_delete(p->br, vinfo->vid))
675 } else if (!br_vlan_delete(br, vinfo->vid)) {
684 int br_process_vlan_info(struct net_bridge *br,
685 struct net_bridge_port *p, int cmd,
686 struct bridge_vlan_info *vinfo_curr,
687 struct bridge_vlan_info **vinfo_last,
689 struct netlink_ext_ack *extack)
693 if (!br_vlan_valid_id(vinfo_curr->vid, extack))
696 /* needed for vlan-only NEWVLAN/DELVLAN notifications */
697 rtm_cmd = br_afspec_cmd_to_rtm(cmd);
699 if (vinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) {
700 if (!br_vlan_valid_range(vinfo_curr, *vinfo_last, extack))
702 *vinfo_last = vinfo_curr;
707 struct bridge_vlan_info tmp_vinfo;
708 int v, v_change_start = 0;
710 if (!br_vlan_valid_range(vinfo_curr, *vinfo_last, extack))
713 memcpy(&tmp_vinfo, *vinfo_last,
714 sizeof(struct bridge_vlan_info));
715 for (v = (*vinfo_last)->vid; v <= vinfo_curr->vid; v++) {
716 bool curr_change = false;
719 err = br_vlan_info(br, p, cmd, &tmp_vinfo, &curr_change,
724 *changed = curr_change;
728 /* nothing to notify yet */
731 br_vlan_notify(br, p, v_change_start,
737 /* v_change_start is set only if the last/whole range changed */
739 br_vlan_notify(br, p, v_change_start,
747 err = br_vlan_info(br, p, cmd, vinfo_curr, changed, extack);
749 br_vlan_notify(br, p, vinfo_curr->vid, 0, rtm_cmd);
754 static int br_afspec(struct net_bridge *br,
755 struct net_bridge_port *p,
756 struct nlattr *af_spec,
757 int cmd, bool *changed,
758 struct netlink_ext_ack *extack)
760 struct bridge_vlan_info *vinfo_curr = NULL;
761 struct bridge_vlan_info *vinfo_last = NULL;
763 struct vtunnel_info tinfo_last = {};
764 struct vtunnel_info tinfo_curr = {};
767 nla_for_each_nested(attr, af_spec, rem) {
769 switch (nla_type(attr)) {
770 case IFLA_BRIDGE_VLAN_TUNNEL_INFO:
771 if (!p || !(p->flags & BR_VLAN_TUNNEL))
773 err = br_parse_vlan_tunnel_info(attr, &tinfo_curr);
776 err = br_process_vlan_tunnel_info(br, p, cmd,
783 case IFLA_BRIDGE_VLAN_INFO:
784 if (nla_len(attr) != sizeof(struct bridge_vlan_info))
786 vinfo_curr = nla_data(attr);
787 err = br_process_vlan_info(br, p, cmd, vinfo_curr,
788 &vinfo_last, changed,
793 case IFLA_BRIDGE_MRP:
794 err = br_mrp_parse(br, p, attr, cmd, extack);
798 case IFLA_BRIDGE_CFM:
799 err = br_cfm_parse(br, p, attr, cmd, extack);
809 static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = {
810 [IFLA_BRPORT_STATE] = { .type = NLA_U8 },
811 [IFLA_BRPORT_COST] = { .type = NLA_U32 },
812 [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 },
813 [IFLA_BRPORT_MODE] = { .type = NLA_U8 },
814 [IFLA_BRPORT_GUARD] = { .type = NLA_U8 },
815 [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 },
816 [IFLA_BRPORT_FAST_LEAVE]= { .type = NLA_U8 },
817 [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 },
818 [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 },
819 [IFLA_BRPORT_PROXYARP] = { .type = NLA_U8 },
820 [IFLA_BRPORT_PROXYARP_WIFI] = { .type = NLA_U8 },
821 [IFLA_BRPORT_MULTICAST_ROUTER] = { .type = NLA_U8 },
822 [IFLA_BRPORT_MCAST_TO_UCAST] = { .type = NLA_U8 },
823 [IFLA_BRPORT_MCAST_FLOOD] = { .type = NLA_U8 },
824 [IFLA_BRPORT_BCAST_FLOOD] = { .type = NLA_U8 },
825 [IFLA_BRPORT_VLAN_TUNNEL] = { .type = NLA_U8 },
826 [IFLA_BRPORT_GROUP_FWD_MASK] = { .type = NLA_U16 },
827 [IFLA_BRPORT_NEIGH_SUPPRESS] = { .type = NLA_U8 },
828 [IFLA_BRPORT_ISOLATED] = { .type = NLA_U8 },
829 [IFLA_BRPORT_BACKUP_PORT] = { .type = NLA_U32 },
830 [IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT] = { .type = NLA_U32 },
833 /* Change the state of the port and notify spanning tree */
834 static int br_set_port_state(struct net_bridge_port *p, u8 state)
836 if (state > BR_STATE_BLOCKING)
839 /* if kernel STP is running, don't allow changes */
840 if (p->br->stp_enabled == BR_KERNEL_STP)
843 /* if device is not up, change is not allowed
844 * if link is not present, only allowable state is disabled
846 if (!netif_running(p->dev) ||
847 (!netif_oper_up(p->dev) && state != BR_STATE_DISABLED))
850 br_set_state(p, state);
851 br_port_state_selection(p->br);
855 /* Set/clear or port flags based on attribute */
856 static int br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[],
857 int attrtype, unsigned long mask)
865 if (nla_get_u8(tb[attrtype]))
866 flags = p->flags | mask;
868 flags = p->flags & ~mask;
870 err = br_switchdev_set_port_flag(p, flags, mask);
878 /* Process bridge protocol info on port */
879 static int br_setport(struct net_bridge_port *p, struct nlattr *tb[])
881 unsigned long old_flags = p->flags;
882 bool br_vlan_tunnel_old = false;
885 err = br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE);
889 err = br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD);
893 err = br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE);
897 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK);
901 err = br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING);
905 err = br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD);
909 err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_FLOOD, BR_MCAST_FLOOD);
913 err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_TO_UCAST, BR_MULTICAST_TO_UNICAST);
917 err = br_set_port_flag(p, tb, IFLA_BRPORT_BCAST_FLOOD, BR_BCAST_FLOOD);
921 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP);
925 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI);
929 br_vlan_tunnel_old = (p->flags & BR_VLAN_TUNNEL) ? true : false;
930 err = br_set_port_flag(p, tb, IFLA_BRPORT_VLAN_TUNNEL, BR_VLAN_TUNNEL);
934 if (br_vlan_tunnel_old && !(p->flags & BR_VLAN_TUNNEL))
935 nbp_vlan_tunnel_info_flush(p);
937 if (tb[IFLA_BRPORT_COST]) {
938 err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST]));
943 if (tb[IFLA_BRPORT_PRIORITY]) {
944 err = br_stp_set_port_priority(p, nla_get_u16(tb[IFLA_BRPORT_PRIORITY]));
949 if (tb[IFLA_BRPORT_STATE]) {
950 err = br_set_port_state(p, nla_get_u8(tb[IFLA_BRPORT_STATE]));
955 if (tb[IFLA_BRPORT_FLUSH])
956 br_fdb_delete_by_port(p->br, p, 0, 0);
958 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
959 if (tb[IFLA_BRPORT_MULTICAST_ROUTER]) {
960 u8 mcast_router = nla_get_u8(tb[IFLA_BRPORT_MULTICAST_ROUTER]);
962 err = br_multicast_set_port_router(p, mcast_router);
967 if (tb[IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT]) {
970 hlimit = nla_get_u32(tb[IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT]);
971 err = br_multicast_eht_set_hosts_limit(p, hlimit);
977 if (tb[IFLA_BRPORT_GROUP_FWD_MASK]) {
978 u16 fwd_mask = nla_get_u16(tb[IFLA_BRPORT_GROUP_FWD_MASK]);
980 if (fwd_mask & BR_GROUPFWD_MACPAUSE)
982 p->group_fwd_mask = fwd_mask;
985 err = br_set_port_flag(p, tb, IFLA_BRPORT_NEIGH_SUPPRESS,
990 err = br_set_port_flag(p, tb, IFLA_BRPORT_ISOLATED, BR_ISOLATED);
994 if (tb[IFLA_BRPORT_BACKUP_PORT]) {
995 struct net_device *backup_dev = NULL;
998 backup_ifindex = nla_get_u32(tb[IFLA_BRPORT_BACKUP_PORT]);
999 if (backup_ifindex) {
1000 backup_dev = __dev_get_by_index(dev_net(p->dev),
1006 err = nbp_backup_change(p, backup_dev);
1011 br_port_flags_change(p, old_flags ^ p->flags);
1015 /* Change state and parameters on port. */
1016 int br_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags,
1017 struct netlink_ext_ack *extack)
1019 struct net_bridge *br = (struct net_bridge *)netdev_priv(dev);
1020 struct nlattr *tb[IFLA_BRPORT_MAX + 1];
1021 struct net_bridge_port *p;
1022 struct nlattr *protinfo;
1023 struct nlattr *afspec;
1024 bool changed = false;
1027 protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO);
1028 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
1029 if (!protinfo && !afspec)
1032 p = br_port_get_rtnl(dev);
1033 /* We want to accept dev as bridge itself if the AF_SPEC
1034 * is set to see if someone is setting vlan info on the bridge
1039 if (p && protinfo) {
1040 if (protinfo->nla_type & NLA_F_NESTED) {
1041 err = nla_parse_nested_deprecated(tb, IFLA_BRPORT_MAX,
1048 spin_lock_bh(&p->br->lock);
1049 err = br_setport(p, tb);
1050 spin_unlock_bh(&p->br->lock);
1052 /* Binary compatibility with old RSTP */
1053 if (nla_len(protinfo) < sizeof(u8))
1056 spin_lock_bh(&p->br->lock);
1057 err = br_set_port_state(p, nla_get_u8(protinfo));
1058 spin_unlock_bh(&p->br->lock);
1066 err = br_afspec(br, p, afspec, RTM_SETLINK, &changed, extack);
1069 br_ifinfo_notify(RTM_NEWLINK, br, p);
1074 /* Delete port information */
1075 int br_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags)
1077 struct net_bridge *br = (struct net_bridge *)netdev_priv(dev);
1078 struct net_bridge_port *p;
1079 struct nlattr *afspec;
1080 bool changed = false;
1083 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
1087 p = br_port_get_rtnl(dev);
1088 /* We want to accept dev as bridge itself as well */
1089 if (!p && !(dev->priv_flags & IFF_EBRIDGE))
1092 err = br_afspec(br, p, afspec, RTM_DELLINK, &changed, NULL);
1094 /* Send RTM_NEWLINK because userspace
1095 * expects RTM_NEWLINK for vlan dels
1097 br_ifinfo_notify(RTM_NEWLINK, br, p);
1102 static int br_validate(struct nlattr *tb[], struct nlattr *data[],
1103 struct netlink_ext_ack *extack)
1105 if (tb[IFLA_ADDRESS]) {
1106 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
1108 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
1109 return -EADDRNOTAVAIL;
1115 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1116 if (data[IFLA_BR_VLAN_PROTOCOL] &&
1117 !eth_type_vlan(nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL])))
1118 return -EPROTONOSUPPORT;
1120 if (data[IFLA_BR_VLAN_DEFAULT_PVID]) {
1121 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]);
1123 if (defpvid >= VLAN_VID_MASK)
1131 static int br_port_slave_changelink(struct net_device *brdev,
1132 struct net_device *dev,
1133 struct nlattr *tb[],
1134 struct nlattr *data[],
1135 struct netlink_ext_ack *extack)
1137 struct net_bridge *br = netdev_priv(brdev);
1143 spin_lock_bh(&br->lock);
1144 ret = br_setport(br_port_get_rtnl(dev), data);
1145 spin_unlock_bh(&br->lock);
1150 static int br_port_fill_slave_info(struct sk_buff *skb,
1151 const struct net_device *brdev,
1152 const struct net_device *dev)
1154 return br_port_fill_attrs(skb, br_port_get_rtnl(dev));
1157 static size_t br_port_get_slave_size(const struct net_device *brdev,
1158 const struct net_device *dev)
1160 return br_port_info_size();
1163 static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = {
1164 [IFLA_BR_FORWARD_DELAY] = { .type = NLA_U32 },
1165 [IFLA_BR_HELLO_TIME] = { .type = NLA_U32 },
1166 [IFLA_BR_MAX_AGE] = { .type = NLA_U32 },
1167 [IFLA_BR_AGEING_TIME] = { .type = NLA_U32 },
1168 [IFLA_BR_STP_STATE] = { .type = NLA_U32 },
1169 [IFLA_BR_PRIORITY] = { .type = NLA_U16 },
1170 [IFLA_BR_VLAN_FILTERING] = { .type = NLA_U8 },
1171 [IFLA_BR_VLAN_PROTOCOL] = { .type = NLA_U16 },
1172 [IFLA_BR_GROUP_FWD_MASK] = { .type = NLA_U16 },
1173 [IFLA_BR_GROUP_ADDR] = { .type = NLA_BINARY,
1175 [IFLA_BR_MCAST_ROUTER] = { .type = NLA_U8 },
1176 [IFLA_BR_MCAST_SNOOPING] = { .type = NLA_U8 },
1177 [IFLA_BR_MCAST_QUERY_USE_IFADDR] = { .type = NLA_U8 },
1178 [IFLA_BR_MCAST_QUERIER] = { .type = NLA_U8 },
1179 [IFLA_BR_MCAST_HASH_ELASTICITY] = { .type = NLA_U32 },
1180 [IFLA_BR_MCAST_HASH_MAX] = { .type = NLA_U32 },
1181 [IFLA_BR_MCAST_LAST_MEMBER_CNT] = { .type = NLA_U32 },
1182 [IFLA_BR_MCAST_STARTUP_QUERY_CNT] = { .type = NLA_U32 },
1183 [IFLA_BR_MCAST_LAST_MEMBER_INTVL] = { .type = NLA_U64 },
1184 [IFLA_BR_MCAST_MEMBERSHIP_INTVL] = { .type = NLA_U64 },
1185 [IFLA_BR_MCAST_QUERIER_INTVL] = { .type = NLA_U64 },
1186 [IFLA_BR_MCAST_QUERY_INTVL] = { .type = NLA_U64 },
1187 [IFLA_BR_MCAST_QUERY_RESPONSE_INTVL] = { .type = NLA_U64 },
1188 [IFLA_BR_MCAST_STARTUP_QUERY_INTVL] = { .type = NLA_U64 },
1189 [IFLA_BR_NF_CALL_IPTABLES] = { .type = NLA_U8 },
1190 [IFLA_BR_NF_CALL_IP6TABLES] = { .type = NLA_U8 },
1191 [IFLA_BR_NF_CALL_ARPTABLES] = { .type = NLA_U8 },
1192 [IFLA_BR_VLAN_DEFAULT_PVID] = { .type = NLA_U16 },
1193 [IFLA_BR_VLAN_STATS_ENABLED] = { .type = NLA_U8 },
1194 [IFLA_BR_MCAST_STATS_ENABLED] = { .type = NLA_U8 },
1195 [IFLA_BR_MCAST_IGMP_VERSION] = { .type = NLA_U8 },
1196 [IFLA_BR_MCAST_MLD_VERSION] = { .type = NLA_U8 },
1197 [IFLA_BR_VLAN_STATS_PER_PORT] = { .type = NLA_U8 },
1198 [IFLA_BR_MULTI_BOOLOPT] =
1199 NLA_POLICY_EXACT_LEN(sizeof(struct br_boolopt_multi)),
1202 static int br_changelink(struct net_device *brdev, struct nlattr *tb[],
1203 struct nlattr *data[],
1204 struct netlink_ext_ack *extack)
1206 struct net_bridge *br = netdev_priv(brdev);
1212 if (data[IFLA_BR_FORWARD_DELAY]) {
1213 err = br_set_forward_delay(br, nla_get_u32(data[IFLA_BR_FORWARD_DELAY]));
1218 if (data[IFLA_BR_HELLO_TIME]) {
1219 err = br_set_hello_time(br, nla_get_u32(data[IFLA_BR_HELLO_TIME]));
1224 if (data[IFLA_BR_MAX_AGE]) {
1225 err = br_set_max_age(br, nla_get_u32(data[IFLA_BR_MAX_AGE]));
1230 if (data[IFLA_BR_AGEING_TIME]) {
1231 err = br_set_ageing_time(br, nla_get_u32(data[IFLA_BR_AGEING_TIME]));
1236 if (data[IFLA_BR_STP_STATE]) {
1237 u32 stp_enabled = nla_get_u32(data[IFLA_BR_STP_STATE]);
1239 err = br_stp_set_enabled(br, stp_enabled, extack);
1244 if (data[IFLA_BR_PRIORITY]) {
1245 u32 priority = nla_get_u16(data[IFLA_BR_PRIORITY]);
1247 br_stp_set_bridge_priority(br, priority);
1250 if (data[IFLA_BR_VLAN_FILTERING]) {
1251 u8 vlan_filter = nla_get_u8(data[IFLA_BR_VLAN_FILTERING]);
1253 err = __br_vlan_filter_toggle(br, vlan_filter);
1258 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1259 if (data[IFLA_BR_VLAN_PROTOCOL]) {
1260 __be16 vlan_proto = nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL]);
1262 err = __br_vlan_set_proto(br, vlan_proto);
1267 if (data[IFLA_BR_VLAN_DEFAULT_PVID]) {
1268 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]);
1270 err = __br_vlan_set_default_pvid(br, defpvid, extack);
1275 if (data[IFLA_BR_VLAN_STATS_ENABLED]) {
1276 __u8 vlan_stats = nla_get_u8(data[IFLA_BR_VLAN_STATS_ENABLED]);
1278 err = br_vlan_set_stats(br, vlan_stats);
1283 if (data[IFLA_BR_VLAN_STATS_PER_PORT]) {
1284 __u8 per_port = nla_get_u8(data[IFLA_BR_VLAN_STATS_PER_PORT]);
1286 err = br_vlan_set_stats_per_port(br, per_port);
1292 if (data[IFLA_BR_GROUP_FWD_MASK]) {
1293 u16 fwd_mask = nla_get_u16(data[IFLA_BR_GROUP_FWD_MASK]);
1295 if (fwd_mask & BR_GROUPFWD_RESTRICTED)
1297 br->group_fwd_mask = fwd_mask;
1300 if (data[IFLA_BR_GROUP_ADDR]) {
1301 u8 new_addr[ETH_ALEN];
1303 if (nla_len(data[IFLA_BR_GROUP_ADDR]) != ETH_ALEN)
1305 memcpy(new_addr, nla_data(data[IFLA_BR_GROUP_ADDR]), ETH_ALEN);
1306 if (!is_link_local_ether_addr(new_addr))
1308 if (new_addr[5] == 1 || /* 802.3x Pause address */
1309 new_addr[5] == 2 || /* 802.3ad Slow protocols */
1310 new_addr[5] == 3) /* 802.1X PAE address */
1312 spin_lock_bh(&br->lock);
1313 memcpy(br->group_addr, new_addr, sizeof(br->group_addr));
1314 spin_unlock_bh(&br->lock);
1315 br_opt_toggle(br, BROPT_GROUP_ADDR_SET, true);
1316 br_recalculate_fwd_mask(br);
1319 if (data[IFLA_BR_FDB_FLUSH])
1322 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1323 if (data[IFLA_BR_MCAST_ROUTER]) {
1324 u8 multicast_router = nla_get_u8(data[IFLA_BR_MCAST_ROUTER]);
1326 err = br_multicast_set_router(br, multicast_router);
1331 if (data[IFLA_BR_MCAST_SNOOPING]) {
1332 u8 mcast_snooping = nla_get_u8(data[IFLA_BR_MCAST_SNOOPING]);
1334 br_multicast_toggle(br, mcast_snooping);
1337 if (data[IFLA_BR_MCAST_QUERY_USE_IFADDR]) {
1340 val = nla_get_u8(data[IFLA_BR_MCAST_QUERY_USE_IFADDR]);
1341 br_opt_toggle(br, BROPT_MULTICAST_QUERY_USE_IFADDR, !!val);
1344 if (data[IFLA_BR_MCAST_QUERIER]) {
1345 u8 mcast_querier = nla_get_u8(data[IFLA_BR_MCAST_QUERIER]);
1347 err = br_multicast_set_querier(br, mcast_querier);
1352 if (data[IFLA_BR_MCAST_HASH_ELASTICITY])
1353 br_warn(br, "the hash_elasticity option has been deprecated and is always %u\n",
1356 if (data[IFLA_BR_MCAST_HASH_MAX])
1357 br->hash_max = nla_get_u32(data[IFLA_BR_MCAST_HASH_MAX]);
1359 if (data[IFLA_BR_MCAST_LAST_MEMBER_CNT]) {
1360 u32 val = nla_get_u32(data[IFLA_BR_MCAST_LAST_MEMBER_CNT]);
1362 br->multicast_last_member_count = val;
1365 if (data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]) {
1366 u32 val = nla_get_u32(data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]);
1368 br->multicast_startup_query_count = val;
1371 if (data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]) {
1372 u64 val = nla_get_u64(data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]);
1374 br->multicast_last_member_interval = clock_t_to_jiffies(val);
1377 if (data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]) {
1378 u64 val = nla_get_u64(data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]);
1380 br->multicast_membership_interval = clock_t_to_jiffies(val);
1383 if (data[IFLA_BR_MCAST_QUERIER_INTVL]) {
1384 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERIER_INTVL]);
1386 br->multicast_querier_interval = clock_t_to_jiffies(val);
1389 if (data[IFLA_BR_MCAST_QUERY_INTVL]) {
1390 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_INTVL]);
1392 br->multicast_query_interval = clock_t_to_jiffies(val);
1395 if (data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]) {
1396 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]);
1398 br->multicast_query_response_interval = clock_t_to_jiffies(val);
1401 if (data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]) {
1402 u64 val = nla_get_u64(data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]);
1404 br->multicast_startup_query_interval = clock_t_to_jiffies(val);
1407 if (data[IFLA_BR_MCAST_STATS_ENABLED]) {
1410 mcast_stats = nla_get_u8(data[IFLA_BR_MCAST_STATS_ENABLED]);
1411 br_opt_toggle(br, BROPT_MULTICAST_STATS_ENABLED, !!mcast_stats);
1414 if (data[IFLA_BR_MCAST_IGMP_VERSION]) {
1417 igmp_version = nla_get_u8(data[IFLA_BR_MCAST_IGMP_VERSION]);
1418 err = br_multicast_set_igmp_version(br, igmp_version);
1423 #if IS_ENABLED(CONFIG_IPV6)
1424 if (data[IFLA_BR_MCAST_MLD_VERSION]) {
1427 mld_version = nla_get_u8(data[IFLA_BR_MCAST_MLD_VERSION]);
1428 err = br_multicast_set_mld_version(br, mld_version);
1434 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1435 if (data[IFLA_BR_NF_CALL_IPTABLES]) {
1436 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IPTABLES]);
1438 br_opt_toggle(br, BROPT_NF_CALL_IPTABLES, !!val);
1441 if (data[IFLA_BR_NF_CALL_IP6TABLES]) {
1442 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IP6TABLES]);
1444 br_opt_toggle(br, BROPT_NF_CALL_IP6TABLES, !!val);
1447 if (data[IFLA_BR_NF_CALL_ARPTABLES]) {
1448 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_ARPTABLES]);
1450 br_opt_toggle(br, BROPT_NF_CALL_ARPTABLES, !!val);
1454 if (data[IFLA_BR_MULTI_BOOLOPT]) {
1455 struct br_boolopt_multi *bm;
1457 bm = nla_data(data[IFLA_BR_MULTI_BOOLOPT]);
1458 err = br_boolopt_multi_toggle(br, bm, extack);
1466 static int br_dev_newlink(struct net *src_net, struct net_device *dev,
1467 struct nlattr *tb[], struct nlattr *data[],
1468 struct netlink_ext_ack *extack)
1470 struct net_bridge *br = netdev_priv(dev);
1473 err = register_netdevice(dev);
1477 if (tb[IFLA_ADDRESS]) {
1478 spin_lock_bh(&br->lock);
1479 br_stp_change_bridge_id(br, nla_data(tb[IFLA_ADDRESS]));
1480 spin_unlock_bh(&br->lock);
1483 err = br_changelink(dev, tb, data, extack);
1485 br_dev_delete(dev, NULL);
1490 static size_t br_get_size(const struct net_device *brdev)
1492 return nla_total_size(sizeof(u32)) + /* IFLA_BR_FORWARD_DELAY */
1493 nla_total_size(sizeof(u32)) + /* IFLA_BR_HELLO_TIME */
1494 nla_total_size(sizeof(u32)) + /* IFLA_BR_MAX_AGE */
1495 nla_total_size(sizeof(u32)) + /* IFLA_BR_AGEING_TIME */
1496 nla_total_size(sizeof(u32)) + /* IFLA_BR_STP_STATE */
1497 nla_total_size(sizeof(u16)) + /* IFLA_BR_PRIORITY */
1498 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_FILTERING */
1499 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1500 nla_total_size(sizeof(__be16)) + /* IFLA_BR_VLAN_PROTOCOL */
1501 nla_total_size(sizeof(u16)) + /* IFLA_BR_VLAN_DEFAULT_PVID */
1502 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_ENABLED */
1503 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_PER_PORT */
1505 nla_total_size(sizeof(u16)) + /* IFLA_BR_GROUP_FWD_MASK */
1506 nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_ROOT_ID */
1507 nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_BRIDGE_ID */
1508 nla_total_size(sizeof(u16)) + /* IFLA_BR_ROOT_PORT */
1509 nla_total_size(sizeof(u32)) + /* IFLA_BR_ROOT_PATH_COST */
1510 nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE */
1511 nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE_DETECTED */
1512 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_HELLO_TIMER */
1513 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TCN_TIMER */
1514 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TOPOLOGY_CHANGE_TIMER */
1515 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_GC_TIMER */
1516 nla_total_size(ETH_ALEN) + /* IFLA_BR_GROUP_ADDR */
1517 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1518 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_ROUTER */
1519 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_SNOOPING */
1520 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERY_USE_IFADDR */
1521 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERIER */
1522 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_STATS_ENABLED */
1523 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_ELASTICITY */
1524 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_MAX */
1525 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_LAST_MEMBER_CNT */
1526 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_STARTUP_QUERY_CNT */
1527 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_LAST_MEMBER_INTVL */
1528 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_MEMBERSHIP_INTVL */
1529 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERIER_INTVL */
1530 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_INTVL */
1531 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_RESPONSE_INTVL */
1532 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_STARTUP_QUERY_INTVL */
1533 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_IGMP_VERSION */
1534 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_MLD_VERSION */
1536 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1537 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IPTABLES */
1538 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IP6TABLES */
1539 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_ARPTABLES */
1541 nla_total_size(sizeof(struct br_boolopt_multi)) + /* IFLA_BR_MULTI_BOOLOPT */
1545 static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev)
1547 struct net_bridge *br = netdev_priv(brdev);
1548 u32 forward_delay = jiffies_to_clock_t(br->forward_delay);
1549 u32 hello_time = jiffies_to_clock_t(br->hello_time);
1550 u32 age_time = jiffies_to_clock_t(br->max_age);
1551 u32 ageing_time = jiffies_to_clock_t(br->ageing_time);
1552 u32 stp_enabled = br->stp_enabled;
1553 u16 priority = (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1];
1554 u8 vlan_enabled = br_vlan_enabled(br->dev);
1555 struct br_boolopt_multi bm;
1558 clockval = br_timer_value(&br->hello_timer);
1559 if (nla_put_u64_64bit(skb, IFLA_BR_HELLO_TIMER, clockval, IFLA_BR_PAD))
1561 clockval = br_timer_value(&br->tcn_timer);
1562 if (nla_put_u64_64bit(skb, IFLA_BR_TCN_TIMER, clockval, IFLA_BR_PAD))
1564 clockval = br_timer_value(&br->topology_change_timer);
1565 if (nla_put_u64_64bit(skb, IFLA_BR_TOPOLOGY_CHANGE_TIMER, clockval,
1568 clockval = br_timer_value(&br->gc_work.timer);
1569 if (nla_put_u64_64bit(skb, IFLA_BR_GC_TIMER, clockval, IFLA_BR_PAD))
1572 br_boolopt_multi_get(br, &bm);
1573 if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) ||
1574 nla_put_u32(skb, IFLA_BR_HELLO_TIME, hello_time) ||
1575 nla_put_u32(skb, IFLA_BR_MAX_AGE, age_time) ||
1576 nla_put_u32(skb, IFLA_BR_AGEING_TIME, ageing_time) ||
1577 nla_put_u32(skb, IFLA_BR_STP_STATE, stp_enabled) ||
1578 nla_put_u16(skb, IFLA_BR_PRIORITY, priority) ||
1579 nla_put_u8(skb, IFLA_BR_VLAN_FILTERING, vlan_enabled) ||
1580 nla_put_u16(skb, IFLA_BR_GROUP_FWD_MASK, br->group_fwd_mask) ||
1581 nla_put(skb, IFLA_BR_BRIDGE_ID, sizeof(struct ifla_bridge_id),
1583 nla_put(skb, IFLA_BR_ROOT_ID, sizeof(struct ifla_bridge_id),
1584 &br->designated_root) ||
1585 nla_put_u16(skb, IFLA_BR_ROOT_PORT, br->root_port) ||
1586 nla_put_u32(skb, IFLA_BR_ROOT_PATH_COST, br->root_path_cost) ||
1587 nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE, br->topology_change) ||
1588 nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE_DETECTED,
1589 br->topology_change_detected) ||
1590 nla_put(skb, IFLA_BR_GROUP_ADDR, ETH_ALEN, br->group_addr) ||
1591 nla_put(skb, IFLA_BR_MULTI_BOOLOPT, sizeof(bm), &bm))
1594 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1595 if (nla_put_be16(skb, IFLA_BR_VLAN_PROTOCOL, br->vlan_proto) ||
1596 nla_put_u16(skb, IFLA_BR_VLAN_DEFAULT_PVID, br->default_pvid) ||
1597 nla_put_u8(skb, IFLA_BR_VLAN_STATS_ENABLED,
1598 br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) ||
1599 nla_put_u8(skb, IFLA_BR_VLAN_STATS_PER_PORT,
1600 br_opt_get(br, BROPT_VLAN_STATS_PER_PORT)))
1603 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1604 if (nla_put_u8(skb, IFLA_BR_MCAST_ROUTER, br->multicast_router) ||
1605 nla_put_u8(skb, IFLA_BR_MCAST_SNOOPING,
1606 br_opt_get(br, BROPT_MULTICAST_ENABLED)) ||
1607 nla_put_u8(skb, IFLA_BR_MCAST_QUERY_USE_IFADDR,
1608 br_opt_get(br, BROPT_MULTICAST_QUERY_USE_IFADDR)) ||
1609 nla_put_u8(skb, IFLA_BR_MCAST_QUERIER,
1610 br_opt_get(br, BROPT_MULTICAST_QUERIER)) ||
1611 nla_put_u8(skb, IFLA_BR_MCAST_STATS_ENABLED,
1612 br_opt_get(br, BROPT_MULTICAST_STATS_ENABLED)) ||
1613 nla_put_u32(skb, IFLA_BR_MCAST_HASH_ELASTICITY, RHT_ELASTICITY) ||
1614 nla_put_u32(skb, IFLA_BR_MCAST_HASH_MAX, br->hash_max) ||
1615 nla_put_u32(skb, IFLA_BR_MCAST_LAST_MEMBER_CNT,
1616 br->multicast_last_member_count) ||
1617 nla_put_u32(skb, IFLA_BR_MCAST_STARTUP_QUERY_CNT,
1618 br->multicast_startup_query_count) ||
1619 nla_put_u8(skb, IFLA_BR_MCAST_IGMP_VERSION,
1620 br->multicast_igmp_version))
1622 #if IS_ENABLED(CONFIG_IPV6)
1623 if (nla_put_u8(skb, IFLA_BR_MCAST_MLD_VERSION,
1624 br->multicast_mld_version))
1627 clockval = jiffies_to_clock_t(br->multicast_last_member_interval);
1628 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_LAST_MEMBER_INTVL, clockval,
1631 clockval = jiffies_to_clock_t(br->multicast_membership_interval);
1632 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_MEMBERSHIP_INTVL, clockval,
1635 clockval = jiffies_to_clock_t(br->multicast_querier_interval);
1636 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERIER_INTVL, clockval,
1639 clockval = jiffies_to_clock_t(br->multicast_query_interval);
1640 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_INTVL, clockval,
1643 clockval = jiffies_to_clock_t(br->multicast_query_response_interval);
1644 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_RESPONSE_INTVL, clockval,
1647 clockval = jiffies_to_clock_t(br->multicast_startup_query_interval);
1648 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_STARTUP_QUERY_INTVL, clockval,
1652 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1653 if (nla_put_u8(skb, IFLA_BR_NF_CALL_IPTABLES,
1654 br_opt_get(br, BROPT_NF_CALL_IPTABLES) ? 1 : 0) ||
1655 nla_put_u8(skb, IFLA_BR_NF_CALL_IP6TABLES,
1656 br_opt_get(br, BROPT_NF_CALL_IP6TABLES) ? 1 : 0) ||
1657 nla_put_u8(skb, IFLA_BR_NF_CALL_ARPTABLES,
1658 br_opt_get(br, BROPT_NF_CALL_ARPTABLES) ? 1 : 0))
1665 static size_t br_get_linkxstats_size(const struct net_device *dev, int attr)
1667 struct net_bridge_port *p = NULL;
1668 struct net_bridge_vlan_group *vg;
1669 struct net_bridge_vlan *v;
1670 struct net_bridge *br;
1674 case IFLA_STATS_LINK_XSTATS:
1675 br = netdev_priv(dev);
1676 vg = br_vlan_group(br);
1678 case IFLA_STATS_LINK_XSTATS_SLAVE:
1679 p = br_port_get_rtnl(dev);
1683 vg = nbp_vlan_group(p);
1690 /* we need to count all, even placeholder entries */
1691 list_for_each_entry(v, &vg->vlan_list, vlist)
1695 return numvls * nla_total_size(sizeof(struct bridge_vlan_xstats)) +
1696 nla_total_size(sizeof(struct br_mcast_stats)) +
1700 static int br_fill_linkxstats(struct sk_buff *skb,
1701 const struct net_device *dev,
1702 int *prividx, int attr)
1704 struct nlattr *nla __maybe_unused;
1705 struct net_bridge_port *p = NULL;
1706 struct net_bridge_vlan_group *vg;
1707 struct net_bridge_vlan *v;
1708 struct net_bridge *br;
1709 struct nlattr *nest;
1713 case IFLA_STATS_LINK_XSTATS:
1714 br = netdev_priv(dev);
1715 vg = br_vlan_group(br);
1717 case IFLA_STATS_LINK_XSTATS_SLAVE:
1718 p = br_port_get_rtnl(dev);
1722 vg = nbp_vlan_group(p);
1728 nest = nla_nest_start_noflag(skb, LINK_XSTATS_TYPE_BRIDGE);
1735 pvid = br_get_pvid(vg);
1736 list_for_each_entry(v, &vg->vlan_list, vlist) {
1737 struct bridge_vlan_xstats vxi;
1738 struct pcpu_sw_netstats stats;
1740 if (++vl_idx < *prividx)
1742 memset(&vxi, 0, sizeof(vxi));
1744 vxi.flags = v->flags;
1746 vxi.flags |= BRIDGE_VLAN_INFO_PVID;
1747 br_vlan_get_stats(v, &stats);
1748 vxi.rx_bytes = stats.rx_bytes;
1749 vxi.rx_packets = stats.rx_packets;
1750 vxi.tx_bytes = stats.tx_bytes;
1751 vxi.tx_packets = stats.tx_packets;
1753 if (nla_put(skb, BRIDGE_XSTATS_VLAN, sizeof(vxi), &vxi))
1754 goto nla_put_failure;
1758 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1759 if (++vl_idx >= *prividx) {
1760 nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_MCAST,
1761 sizeof(struct br_mcast_stats),
1764 goto nla_put_failure;
1765 br_multicast_get_stats(br, p, nla_data(nla));
1770 nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_STP,
1771 sizeof(p->stp_xstats),
1774 goto nla_put_failure;
1776 spin_lock_bh(&br->lock);
1777 memcpy(nla_data(nla), &p->stp_xstats, sizeof(p->stp_xstats));
1778 spin_unlock_bh(&br->lock);
1781 nla_nest_end(skb, nest);
1787 nla_nest_end(skb, nest);
1793 static struct rtnl_af_ops br_af_ops __read_mostly = {
1794 .family = AF_BRIDGE,
1795 .get_link_af_size = br_get_link_af_size_filtered,
1798 struct rtnl_link_ops br_link_ops __read_mostly = {
1800 .priv_size = sizeof(struct net_bridge),
1801 .setup = br_dev_setup,
1802 .maxtype = IFLA_BR_MAX,
1803 .policy = br_policy,
1804 .validate = br_validate,
1805 .newlink = br_dev_newlink,
1806 .changelink = br_changelink,
1807 .dellink = br_dev_delete,
1808 .get_size = br_get_size,
1809 .fill_info = br_fill_info,
1810 .fill_linkxstats = br_fill_linkxstats,
1811 .get_linkxstats_size = br_get_linkxstats_size,
1813 .slave_maxtype = IFLA_BRPORT_MAX,
1814 .slave_policy = br_port_policy,
1815 .slave_changelink = br_port_slave_changelink,
1816 .get_slave_size = br_port_get_slave_size,
1817 .fill_slave_info = br_port_fill_slave_info,
1820 int __init br_netlink_init(void)
1825 br_vlan_rtnl_init();
1826 rtnl_af_register(&br_af_ops);
1828 err = rtnl_link_register(&br_link_ops);
1835 rtnl_af_unregister(&br_af_ops);
1840 void br_netlink_fini(void)
1843 br_vlan_rtnl_uninit();
1844 rtnl_af_unregister(&br_af_ops);
1845 rtnl_link_unregister(&br_link_ops);