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"
22 static int __get_num_vlan_infos(struct net_bridge_vlan_group *vg,
25 struct net_bridge_vlan *v;
26 u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0;
30 if (!(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED))
33 pvid = br_get_pvid(vg);
34 /* Count number of vlan infos */
35 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
37 /* only a context, bridge vlan not activated */
38 if (!br_vlan_should_use(v))
41 flags |= BRIDGE_VLAN_INFO_PVID;
43 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
44 flags |= BRIDGE_VLAN_INFO_UNTAGGED;
46 if (vid_range_start == 0) {
48 } else if ((v->vid - vid_range_end) == 1 &&
49 flags == vid_range_flags) {
50 vid_range_end = v->vid;
53 if ((vid_range_end - vid_range_start) > 0)
59 vid_range_start = v->vid;
60 vid_range_end = v->vid;
61 vid_range_flags = flags;
64 if (vid_range_start != 0) {
65 if ((vid_range_end - vid_range_start) > 0)
74 static int br_get_num_vlan_infos(struct net_bridge_vlan_group *vg,
82 if (filter_mask & RTEXT_FILTER_BRVLAN)
86 num_vlans = __get_num_vlan_infos(vg, filter_mask);
92 static size_t br_get_link_af_size_filtered(const struct net_device *dev,
95 struct net_bridge_vlan_group *vg = NULL;
96 struct net_bridge_port *p = NULL;
97 struct net_bridge *br = NULL;
98 u32 num_cfm_peer_mep_infos;
99 u32 num_cfm_mep_infos;
104 if (netif_is_bridge_port(dev)) {
105 p = br_port_get_rcu(dev);
106 vg = nbp_vlan_group_rcu(p);
107 } else if (dev->priv_flags & IFF_EBRIDGE) {
108 br = netdev_priv(dev);
109 vg = br_vlan_group_rcu(br);
111 num_vlan_infos = br_get_num_vlan_infos(vg, filter_mask);
114 if (p && (p->flags & BR_VLAN_TUNNEL))
115 vinfo_sz += br_get_vlan_tunnel_info_size(vg);
117 /* Each VLAN is returned in bridge_vlan_info along with flags */
118 vinfo_sz += num_vlan_infos * nla_total_size(sizeof(struct bridge_vlan_info));
120 if (!(filter_mask & RTEXT_FILTER_CFM_STATUS))
126 /* CFM status info must be added */
127 br_cfm_mep_count(br, &num_cfm_mep_infos);
128 br_cfm_peer_mep_count(br, &num_cfm_peer_mep_infos);
130 vinfo_sz += nla_total_size(0); /* IFLA_BRIDGE_CFM */
131 /* For each status struct the MEP instance (u32) is added */
132 /* MEP instance (u32) + br_cfm_mep_status */
133 vinfo_sz += num_cfm_mep_infos *
134 /*IFLA_BRIDGE_CFM_MEP_STATUS_INSTANCE */
135 (nla_total_size(sizeof(u32))
136 /* IFLA_BRIDGE_CFM_MEP_STATUS_OPCODE_UNEXP_SEEN */
137 + nla_total_size(sizeof(u32))
138 /* IFLA_BRIDGE_CFM_MEP_STATUS_VERSION_UNEXP_SEEN */
139 + nla_total_size(sizeof(u32))
140 /* IFLA_BRIDGE_CFM_MEP_STATUS_RX_LEVEL_LOW_SEEN */
141 + nla_total_size(sizeof(u32)));
142 /* MEP instance (u32) + br_cfm_cc_peer_status */
143 vinfo_sz += num_cfm_peer_mep_infos *
144 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_INSTANCE */
145 (nla_total_size(sizeof(u32))
146 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_PEER_MEPID */
147 + nla_total_size(sizeof(u32))
148 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_CCM_DEFECT */
149 + nla_total_size(sizeof(u32))
150 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_RDI */
151 + nla_total_size(sizeof(u32))
152 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_PORT_TLV_VALUE */
153 + nla_total_size(sizeof(u8))
154 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_IF_TLV_VALUE */
155 + nla_total_size(sizeof(u8))
156 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_SEEN */
157 + nla_total_size(sizeof(u32))
158 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_TLV_SEEN */
159 + nla_total_size(sizeof(u32))
160 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_SEQ_UNEXP_SEEN */
161 + nla_total_size(sizeof(u32)));
166 static inline size_t br_port_info_size(void)
168 return nla_total_size(1) /* IFLA_BRPORT_STATE */
169 + nla_total_size(2) /* IFLA_BRPORT_PRIORITY */
170 + nla_total_size(4) /* IFLA_BRPORT_COST */
171 + nla_total_size(1) /* IFLA_BRPORT_MODE */
172 + nla_total_size(1) /* IFLA_BRPORT_GUARD */
173 + nla_total_size(1) /* IFLA_BRPORT_PROTECT */
174 + nla_total_size(1) /* IFLA_BRPORT_FAST_LEAVE */
175 + nla_total_size(1) /* IFLA_BRPORT_MCAST_TO_UCAST */
176 + nla_total_size(1) /* IFLA_BRPORT_LEARNING */
177 + nla_total_size(1) /* IFLA_BRPORT_UNICAST_FLOOD */
178 + nla_total_size(1) /* IFLA_BRPORT_MCAST_FLOOD */
179 + nla_total_size(1) /* IFLA_BRPORT_BCAST_FLOOD */
180 + nla_total_size(1) /* IFLA_BRPORT_PROXYARP */
181 + nla_total_size(1) /* IFLA_BRPORT_PROXYARP_WIFI */
182 + nla_total_size(1) /* IFLA_BRPORT_VLAN_TUNNEL */
183 + nla_total_size(1) /* IFLA_BRPORT_NEIGH_SUPPRESS */
184 + nla_total_size(1) /* IFLA_BRPORT_ISOLATED */
185 + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_ROOT_ID */
186 + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_BRIDGE_ID */
187 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_DESIGNATED_PORT */
188 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_DESIGNATED_COST */
189 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_ID */
190 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_NO */
191 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_TOPOLOGY_CHANGE_ACK */
192 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_CONFIG_PENDING */
193 + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_MESSAGE_AGE_TIMER */
194 + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_FORWARD_DELAY_TIMER */
195 + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_HOLD_TIMER */
196 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
197 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_MULTICAST_ROUTER */
199 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_GROUP_FWD_MASK */
200 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_MRP_RING_OPEN */
201 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_MRP_IN_OPEN */
205 static inline size_t br_nlmsg_size(struct net_device *dev, u32 filter_mask)
207 return NLMSG_ALIGN(sizeof(struct ifinfomsg))
208 + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */
209 + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */
210 + nla_total_size(4) /* IFLA_MASTER */
211 + nla_total_size(4) /* IFLA_MTU */
212 + nla_total_size(4) /* IFLA_LINK */
213 + nla_total_size(1) /* IFLA_OPERSTATE */
214 + nla_total_size(br_port_info_size()) /* IFLA_PROTINFO */
215 + nla_total_size(br_get_link_af_size_filtered(dev,
216 filter_mask)) /* IFLA_AF_SPEC */
217 + nla_total_size(4); /* IFLA_BRPORT_BACKUP_PORT */
220 static int br_port_fill_attrs(struct sk_buff *skb,
221 const struct net_bridge_port *p)
223 u8 mode = !!(p->flags & BR_HAIRPIN_MODE);
224 struct net_bridge_port *backup_p;
227 if (nla_put_u8(skb, IFLA_BRPORT_STATE, p->state) ||
228 nla_put_u16(skb, IFLA_BRPORT_PRIORITY, p->priority) ||
229 nla_put_u32(skb, IFLA_BRPORT_COST, p->path_cost) ||
230 nla_put_u8(skb, IFLA_BRPORT_MODE, mode) ||
231 nla_put_u8(skb, IFLA_BRPORT_GUARD, !!(p->flags & BR_BPDU_GUARD)) ||
232 nla_put_u8(skb, IFLA_BRPORT_PROTECT,
233 !!(p->flags & BR_ROOT_BLOCK)) ||
234 nla_put_u8(skb, IFLA_BRPORT_FAST_LEAVE,
235 !!(p->flags & BR_MULTICAST_FAST_LEAVE)) ||
236 nla_put_u8(skb, IFLA_BRPORT_MCAST_TO_UCAST,
237 !!(p->flags & BR_MULTICAST_TO_UNICAST)) ||
238 nla_put_u8(skb, IFLA_BRPORT_LEARNING, !!(p->flags & BR_LEARNING)) ||
239 nla_put_u8(skb, IFLA_BRPORT_UNICAST_FLOOD,
240 !!(p->flags & BR_FLOOD)) ||
241 nla_put_u8(skb, IFLA_BRPORT_MCAST_FLOOD,
242 !!(p->flags & BR_MCAST_FLOOD)) ||
243 nla_put_u8(skb, IFLA_BRPORT_BCAST_FLOOD,
244 !!(p->flags & BR_BCAST_FLOOD)) ||
245 nla_put_u8(skb, IFLA_BRPORT_PROXYARP, !!(p->flags & BR_PROXYARP)) ||
246 nla_put_u8(skb, IFLA_BRPORT_PROXYARP_WIFI,
247 !!(p->flags & BR_PROXYARP_WIFI)) ||
248 nla_put(skb, IFLA_BRPORT_ROOT_ID, sizeof(struct ifla_bridge_id),
249 &p->designated_root) ||
250 nla_put(skb, IFLA_BRPORT_BRIDGE_ID, sizeof(struct ifla_bridge_id),
251 &p->designated_bridge) ||
252 nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_PORT, p->designated_port) ||
253 nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_COST, p->designated_cost) ||
254 nla_put_u16(skb, IFLA_BRPORT_ID, p->port_id) ||
255 nla_put_u16(skb, IFLA_BRPORT_NO, p->port_no) ||
256 nla_put_u8(skb, IFLA_BRPORT_TOPOLOGY_CHANGE_ACK,
257 p->topology_change_ack) ||
258 nla_put_u8(skb, IFLA_BRPORT_CONFIG_PENDING, p->config_pending) ||
259 nla_put_u8(skb, IFLA_BRPORT_VLAN_TUNNEL, !!(p->flags &
261 nla_put_u16(skb, IFLA_BRPORT_GROUP_FWD_MASK, p->group_fwd_mask) ||
262 nla_put_u8(skb, IFLA_BRPORT_NEIGH_SUPPRESS,
263 !!(p->flags & BR_NEIGH_SUPPRESS)) ||
264 nla_put_u8(skb, IFLA_BRPORT_MRP_RING_OPEN, !!(p->flags &
265 BR_MRP_LOST_CONT)) ||
266 nla_put_u8(skb, IFLA_BRPORT_MRP_IN_OPEN,
267 !!(p->flags & BR_MRP_LOST_IN_CONT)) ||
268 nla_put_u8(skb, IFLA_BRPORT_ISOLATED, !!(p->flags & BR_ISOLATED)))
271 timerval = br_timer_value(&p->message_age_timer);
272 if (nla_put_u64_64bit(skb, IFLA_BRPORT_MESSAGE_AGE_TIMER, timerval,
275 timerval = br_timer_value(&p->forward_delay_timer);
276 if (nla_put_u64_64bit(skb, IFLA_BRPORT_FORWARD_DELAY_TIMER, timerval,
279 timerval = br_timer_value(&p->hold_timer);
280 if (nla_put_u64_64bit(skb, IFLA_BRPORT_HOLD_TIMER, timerval,
284 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
285 if (nla_put_u8(skb, IFLA_BRPORT_MULTICAST_ROUTER,
286 p->multicast_router))
290 /* we might be called only with br->lock */
292 backup_p = rcu_dereference(p->backup_port);
294 nla_put_u32(skb, IFLA_BRPORT_BACKUP_PORT,
295 backup_p->dev->ifindex);
301 static int br_fill_ifvlaninfo_range(struct sk_buff *skb, u16 vid_start,
302 u16 vid_end, u16 flags)
304 struct bridge_vlan_info vinfo;
306 if ((vid_end - vid_start) > 0) {
307 /* add range to skb */
308 vinfo.vid = vid_start;
309 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_BEGIN;
310 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
311 sizeof(vinfo), &vinfo))
312 goto nla_put_failure;
315 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_END;
316 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
317 sizeof(vinfo), &vinfo))
318 goto nla_put_failure;
320 vinfo.vid = vid_start;
322 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
323 sizeof(vinfo), &vinfo))
324 goto nla_put_failure;
333 static int br_fill_ifvlaninfo_compressed(struct sk_buff *skb,
334 struct net_bridge_vlan_group *vg)
336 struct net_bridge_vlan *v;
337 u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0;
341 /* Pack IFLA_BRIDGE_VLAN_INFO's for every vlan
342 * and mark vlan info with begin and end flags
343 * if vlaninfo represents a range
345 pvid = br_get_pvid(vg);
346 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
348 if (!br_vlan_should_use(v))
351 flags |= BRIDGE_VLAN_INFO_PVID;
353 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
354 flags |= BRIDGE_VLAN_INFO_UNTAGGED;
356 if (vid_range_start == 0) {
358 } else if ((v->vid - vid_range_end) == 1 &&
359 flags == vid_range_flags) {
360 vid_range_end = v->vid;
363 err = br_fill_ifvlaninfo_range(skb, vid_range_start,
371 vid_range_start = v->vid;
372 vid_range_end = v->vid;
373 vid_range_flags = flags;
376 if (vid_range_start != 0) {
377 /* Call it once more to send any left over vlans */
378 err = br_fill_ifvlaninfo_range(skb, vid_range_start,
388 static int br_fill_ifvlaninfo(struct sk_buff *skb,
389 struct net_bridge_vlan_group *vg)
391 struct bridge_vlan_info vinfo;
392 struct net_bridge_vlan *v;
395 pvid = br_get_pvid(vg);
396 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
397 if (!br_vlan_should_use(v))
403 vinfo.flags |= BRIDGE_VLAN_INFO_PVID;
405 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
406 vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED;
408 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
409 sizeof(vinfo), &vinfo))
410 goto nla_put_failure;
420 * Create one netlink message for one interface
421 * Contains port and master info as well as carrier and bridge state.
423 static int br_fill_ifinfo(struct sk_buff *skb,
424 const struct net_bridge_port *port,
425 u32 pid, u32 seq, int event, unsigned int flags,
426 u32 filter_mask, const struct net_device *dev,
429 u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN;
430 struct nlattr *af = NULL;
431 struct net_bridge *br;
432 struct ifinfomsg *hdr;
433 struct nlmsghdr *nlh;
438 br = netdev_priv(dev);
440 br_debug(br, "br_fill_info event %d port %s master %s\n",
441 event, dev->name, br->dev->name);
443 nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags);
447 hdr = nlmsg_data(nlh);
448 hdr->ifi_family = AF_BRIDGE;
450 hdr->ifi_type = dev->type;
451 hdr->ifi_index = dev->ifindex;
452 hdr->ifi_flags = dev_get_flags(dev);
455 if (nla_put_string(skb, IFLA_IFNAME, dev->name) ||
456 nla_put_u32(skb, IFLA_MASTER, br->dev->ifindex) ||
457 nla_put_u32(skb, IFLA_MTU, dev->mtu) ||
458 nla_put_u8(skb, IFLA_OPERSTATE, operstate) ||
460 nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) ||
461 (dev->ifindex != dev_get_iflink(dev) &&
462 nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev))))
463 goto nla_put_failure;
465 if (event == RTM_NEWLINK && port) {
468 nest = nla_nest_start(skb, IFLA_PROTINFO);
469 if (nest == NULL || br_port_fill_attrs(skb, port) < 0)
470 goto nla_put_failure;
471 nla_nest_end(skb, nest);
474 if (filter_mask & (RTEXT_FILTER_BRVLAN |
475 RTEXT_FILTER_BRVLAN_COMPRESSED |
477 RTEXT_FILTER_CFM_CONFIG |
478 RTEXT_FILTER_CFM_STATUS)) {
479 af = nla_nest_start_noflag(skb, IFLA_AF_SPEC);
481 goto nla_put_failure;
484 /* Check if the VID information is requested */
485 if ((filter_mask & RTEXT_FILTER_BRVLAN) ||
486 (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) {
487 struct net_bridge_vlan_group *vg;
490 /* RCU needed because of the VLAN locking rules (rcu || rtnl) */
493 vg = nbp_vlan_group_rcu(port);
495 vg = br_vlan_group_rcu(br);
497 if (!vg || !vg->num_vlans) {
501 if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)
502 err = br_fill_ifvlaninfo_compressed(skb, vg);
504 err = br_fill_ifvlaninfo(skb, vg);
506 if (port && (port->flags & BR_VLAN_TUNNEL))
507 err = br_fill_vlan_tunnel_info(skb, vg);
510 goto nla_put_failure;
513 if (filter_mask & RTEXT_FILTER_MRP) {
516 if (!br_mrp_enabled(br) || port)
520 err = br_mrp_fill_info(skb, br);
524 goto nla_put_failure;
527 if (filter_mask & (RTEXT_FILTER_CFM_CONFIG | RTEXT_FILTER_CFM_STATUS)) {
528 struct nlattr *cfm_nest = NULL;
531 if (!br_cfm_created(br) || port)
534 cfm_nest = nla_nest_start(skb, IFLA_BRIDGE_CFM);
536 goto nla_put_failure;
538 if (filter_mask & RTEXT_FILTER_CFM_CONFIG) {
540 err = br_cfm_config_fill_info(skb, br);
543 goto nla_put_failure;
546 if (filter_mask & RTEXT_FILTER_CFM_STATUS) {
548 err = br_cfm_status_fill_info(skb, br, getlink);
551 goto nla_put_failure;
554 nla_nest_end(skb, cfm_nest);
559 nla_nest_end(skb, af);
564 nlmsg_cancel(skb, nlh);
568 void br_info_notify(int event, const struct net_bridge *br,
569 const struct net_bridge_port *port, u32 filter)
571 struct net_device *dev;
577 if (WARN_ON(!port && !br))
583 port_no = port->port_no;
589 br_debug(br, "port %u(%s) event %d\n", port_no, dev->name, event);
591 skb = nlmsg_new(br_nlmsg_size(dev, filter), GFP_ATOMIC);
595 err = br_fill_ifinfo(skb, port, 0, 0, event, 0, filter, dev, false);
597 /* -EMSGSIZE implies BUG in br_nlmsg_size() */
598 WARN_ON(err == -EMSGSIZE);
602 rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC);
605 rtnl_set_sk_err(net, RTNLGRP_LINK, err);
608 /* Notify listeners of a change in bridge or port information */
609 void br_ifinfo_notify(int event, const struct net_bridge *br,
610 const struct net_bridge_port *port)
612 u32 filter = RTEXT_FILTER_BRVLAN_COMPRESSED;
614 return br_info_notify(event, br, port, filter);
618 * Dump information about all ports, in response to GETLINK
620 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq,
621 struct net_device *dev, u32 filter_mask, int nlflags)
623 struct net_bridge_port *port = br_port_get_rtnl(dev);
625 if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) &&
626 !(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) &&
627 !(filter_mask & RTEXT_FILTER_MRP) &&
628 !(filter_mask & RTEXT_FILTER_CFM_CONFIG) &&
629 !(filter_mask & RTEXT_FILTER_CFM_STATUS))
632 return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags,
633 filter_mask, dev, true);
636 static int br_vlan_info(struct net_bridge *br, struct net_bridge_port *p,
637 int cmd, struct bridge_vlan_info *vinfo, bool *changed,
638 struct netlink_ext_ack *extack)
646 /* if the MASTER flag is set this will act on the global
647 * per-VLAN entry as well
649 err = nbp_vlan_add(p, vinfo->vid, vinfo->flags,
650 &curr_change, extack);
652 vinfo->flags |= BRIDGE_VLAN_INFO_BRENTRY;
653 err = br_vlan_add(br, vinfo->vid, vinfo->flags,
654 &curr_change, extack);
662 if (!nbp_vlan_delete(p, vinfo->vid))
665 if ((vinfo->flags & BRIDGE_VLAN_INFO_MASTER) &&
666 !br_vlan_delete(p->br, vinfo->vid))
668 } else if (!br_vlan_delete(br, vinfo->vid)) {
677 int br_process_vlan_info(struct net_bridge *br,
678 struct net_bridge_port *p, int cmd,
679 struct bridge_vlan_info *vinfo_curr,
680 struct bridge_vlan_info **vinfo_last,
682 struct netlink_ext_ack *extack)
686 if (!br_vlan_valid_id(vinfo_curr->vid, extack))
689 /* needed for vlan-only NEWVLAN/DELVLAN notifications */
690 rtm_cmd = br_afspec_cmd_to_rtm(cmd);
692 if (vinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) {
693 if (!br_vlan_valid_range(vinfo_curr, *vinfo_last, extack))
695 *vinfo_last = vinfo_curr;
700 struct bridge_vlan_info tmp_vinfo;
701 int v, v_change_start = 0;
703 if (!br_vlan_valid_range(vinfo_curr, *vinfo_last, extack))
706 memcpy(&tmp_vinfo, *vinfo_last,
707 sizeof(struct bridge_vlan_info));
708 for (v = (*vinfo_last)->vid; v <= vinfo_curr->vid; v++) {
709 bool curr_change = false;
712 err = br_vlan_info(br, p, cmd, &tmp_vinfo, &curr_change,
717 *changed = curr_change;
721 /* nothing to notify yet */
724 br_vlan_notify(br, p, v_change_start,
730 /* v_change_start is set only if the last/whole range changed */
732 br_vlan_notify(br, p, v_change_start,
740 err = br_vlan_info(br, p, cmd, vinfo_curr, changed, extack);
742 br_vlan_notify(br, p, vinfo_curr->vid, 0, rtm_cmd);
747 static int br_afspec(struct net_bridge *br,
748 struct net_bridge_port *p,
749 struct nlattr *af_spec,
750 int cmd, bool *changed,
751 struct netlink_ext_ack *extack)
753 struct bridge_vlan_info *vinfo_curr = NULL;
754 struct bridge_vlan_info *vinfo_last = NULL;
756 struct vtunnel_info tinfo_last = {};
757 struct vtunnel_info tinfo_curr = {};
760 nla_for_each_nested(attr, af_spec, rem) {
762 switch (nla_type(attr)) {
763 case IFLA_BRIDGE_VLAN_TUNNEL_INFO:
764 if (!p || !(p->flags & BR_VLAN_TUNNEL))
766 err = br_parse_vlan_tunnel_info(attr, &tinfo_curr);
769 err = br_process_vlan_tunnel_info(br, p, cmd,
776 case IFLA_BRIDGE_VLAN_INFO:
777 if (nla_len(attr) != sizeof(struct bridge_vlan_info))
779 vinfo_curr = nla_data(attr);
780 err = br_process_vlan_info(br, p, cmd, vinfo_curr,
781 &vinfo_last, changed,
786 case IFLA_BRIDGE_MRP:
787 err = br_mrp_parse(br, p, attr, cmd, extack);
791 case IFLA_BRIDGE_CFM:
792 err = br_cfm_parse(br, p, attr, cmd, extack);
802 static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = {
803 [IFLA_BRPORT_STATE] = { .type = NLA_U8 },
804 [IFLA_BRPORT_COST] = { .type = NLA_U32 },
805 [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 },
806 [IFLA_BRPORT_MODE] = { .type = NLA_U8 },
807 [IFLA_BRPORT_GUARD] = { .type = NLA_U8 },
808 [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 },
809 [IFLA_BRPORT_FAST_LEAVE]= { .type = NLA_U8 },
810 [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 },
811 [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 },
812 [IFLA_BRPORT_PROXYARP] = { .type = NLA_U8 },
813 [IFLA_BRPORT_PROXYARP_WIFI] = { .type = NLA_U8 },
814 [IFLA_BRPORT_MULTICAST_ROUTER] = { .type = NLA_U8 },
815 [IFLA_BRPORT_MCAST_TO_UCAST] = { .type = NLA_U8 },
816 [IFLA_BRPORT_MCAST_FLOOD] = { .type = NLA_U8 },
817 [IFLA_BRPORT_BCAST_FLOOD] = { .type = NLA_U8 },
818 [IFLA_BRPORT_VLAN_TUNNEL] = { .type = NLA_U8 },
819 [IFLA_BRPORT_GROUP_FWD_MASK] = { .type = NLA_U16 },
820 [IFLA_BRPORT_NEIGH_SUPPRESS] = { .type = NLA_U8 },
821 [IFLA_BRPORT_ISOLATED] = { .type = NLA_U8 },
822 [IFLA_BRPORT_BACKUP_PORT] = { .type = NLA_U32 },
825 /* Change the state of the port and notify spanning tree */
826 static int br_set_port_state(struct net_bridge_port *p, u8 state)
828 if (state > BR_STATE_BLOCKING)
831 /* if kernel STP is running, don't allow changes */
832 if (p->br->stp_enabled == BR_KERNEL_STP)
835 /* if device is not up, change is not allowed
836 * if link is not present, only allowable state is disabled
838 if (!netif_running(p->dev) ||
839 (!netif_oper_up(p->dev) && state != BR_STATE_DISABLED))
842 br_set_state(p, state);
843 br_port_state_selection(p->br);
847 /* Set/clear or port flags based on attribute */
848 static int br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[],
849 int attrtype, unsigned long mask)
857 if (nla_get_u8(tb[attrtype]))
858 flags = p->flags | mask;
860 flags = p->flags & ~mask;
862 err = br_switchdev_set_port_flag(p, flags, mask);
870 /* Process bridge protocol info on port */
871 static int br_setport(struct net_bridge_port *p, struct nlattr *tb[])
873 unsigned long old_flags = p->flags;
874 bool br_vlan_tunnel_old = false;
877 err = br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE);
881 err = br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD);
885 err = br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE);
889 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK);
893 err = br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING);
897 err = br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD);
901 err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_FLOOD, BR_MCAST_FLOOD);
905 err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_TO_UCAST, BR_MULTICAST_TO_UNICAST);
909 err = br_set_port_flag(p, tb, IFLA_BRPORT_BCAST_FLOOD, BR_BCAST_FLOOD);
913 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP);
917 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI);
921 br_vlan_tunnel_old = (p->flags & BR_VLAN_TUNNEL) ? true : false;
922 err = br_set_port_flag(p, tb, IFLA_BRPORT_VLAN_TUNNEL, BR_VLAN_TUNNEL);
926 if (br_vlan_tunnel_old && !(p->flags & BR_VLAN_TUNNEL))
927 nbp_vlan_tunnel_info_flush(p);
929 if (tb[IFLA_BRPORT_COST]) {
930 err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST]));
935 if (tb[IFLA_BRPORT_PRIORITY]) {
936 err = br_stp_set_port_priority(p, nla_get_u16(tb[IFLA_BRPORT_PRIORITY]));
941 if (tb[IFLA_BRPORT_STATE]) {
942 err = br_set_port_state(p, nla_get_u8(tb[IFLA_BRPORT_STATE]));
947 if (tb[IFLA_BRPORT_FLUSH])
948 br_fdb_delete_by_port(p->br, p, 0, 0);
950 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
951 if (tb[IFLA_BRPORT_MULTICAST_ROUTER]) {
952 u8 mcast_router = nla_get_u8(tb[IFLA_BRPORT_MULTICAST_ROUTER]);
954 err = br_multicast_set_port_router(p, mcast_router);
960 if (tb[IFLA_BRPORT_GROUP_FWD_MASK]) {
961 u16 fwd_mask = nla_get_u16(tb[IFLA_BRPORT_GROUP_FWD_MASK]);
963 if (fwd_mask & BR_GROUPFWD_MACPAUSE)
965 p->group_fwd_mask = fwd_mask;
968 err = br_set_port_flag(p, tb, IFLA_BRPORT_NEIGH_SUPPRESS,
973 err = br_set_port_flag(p, tb, IFLA_BRPORT_ISOLATED, BR_ISOLATED);
977 if (tb[IFLA_BRPORT_BACKUP_PORT]) {
978 struct net_device *backup_dev = NULL;
981 backup_ifindex = nla_get_u32(tb[IFLA_BRPORT_BACKUP_PORT]);
982 if (backup_ifindex) {
983 backup_dev = __dev_get_by_index(dev_net(p->dev),
989 err = nbp_backup_change(p, backup_dev);
994 br_port_flags_change(p, old_flags ^ p->flags);
998 /* Change state and parameters on port. */
999 int br_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags,
1000 struct netlink_ext_ack *extack)
1002 struct net_bridge *br = (struct net_bridge *)netdev_priv(dev);
1003 struct nlattr *tb[IFLA_BRPORT_MAX + 1];
1004 struct net_bridge_port *p;
1005 struct nlattr *protinfo;
1006 struct nlattr *afspec;
1007 bool changed = false;
1010 protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO);
1011 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
1012 if (!protinfo && !afspec)
1015 p = br_port_get_rtnl(dev);
1016 /* We want to accept dev as bridge itself if the AF_SPEC
1017 * is set to see if someone is setting vlan info on the bridge
1022 if (p && protinfo) {
1023 if (protinfo->nla_type & NLA_F_NESTED) {
1024 err = nla_parse_nested_deprecated(tb, IFLA_BRPORT_MAX,
1031 spin_lock_bh(&p->br->lock);
1032 err = br_setport(p, tb);
1033 spin_unlock_bh(&p->br->lock);
1035 /* Binary compatibility with old RSTP */
1036 if (nla_len(protinfo) < sizeof(u8))
1039 spin_lock_bh(&p->br->lock);
1040 err = br_set_port_state(p, nla_get_u8(protinfo));
1041 spin_unlock_bh(&p->br->lock);
1049 err = br_afspec(br, p, afspec, RTM_SETLINK, &changed, extack);
1052 br_ifinfo_notify(RTM_NEWLINK, br, p);
1057 /* Delete port information */
1058 int br_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags)
1060 struct net_bridge *br = (struct net_bridge *)netdev_priv(dev);
1061 struct net_bridge_port *p;
1062 struct nlattr *afspec;
1063 bool changed = false;
1066 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
1070 p = br_port_get_rtnl(dev);
1071 /* We want to accept dev as bridge itself as well */
1072 if (!p && !(dev->priv_flags & IFF_EBRIDGE))
1075 err = br_afspec(br, p, afspec, RTM_DELLINK, &changed, NULL);
1077 /* Send RTM_NEWLINK because userspace
1078 * expects RTM_NEWLINK for vlan dels
1080 br_ifinfo_notify(RTM_NEWLINK, br, p);
1085 static int br_validate(struct nlattr *tb[], struct nlattr *data[],
1086 struct netlink_ext_ack *extack)
1088 if (tb[IFLA_ADDRESS]) {
1089 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
1091 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
1092 return -EADDRNOTAVAIL;
1098 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1099 if (data[IFLA_BR_VLAN_PROTOCOL]) {
1100 switch (nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL])) {
1101 case htons(ETH_P_8021Q):
1102 case htons(ETH_P_8021AD):
1105 return -EPROTONOSUPPORT;
1109 if (data[IFLA_BR_VLAN_DEFAULT_PVID]) {
1110 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]);
1112 if (defpvid >= VLAN_VID_MASK)
1120 static int br_port_slave_changelink(struct net_device *brdev,
1121 struct net_device *dev,
1122 struct nlattr *tb[],
1123 struct nlattr *data[],
1124 struct netlink_ext_ack *extack)
1126 struct net_bridge *br = netdev_priv(brdev);
1132 spin_lock_bh(&br->lock);
1133 ret = br_setport(br_port_get_rtnl(dev), data);
1134 spin_unlock_bh(&br->lock);
1139 static int br_port_fill_slave_info(struct sk_buff *skb,
1140 const struct net_device *brdev,
1141 const struct net_device *dev)
1143 return br_port_fill_attrs(skb, br_port_get_rtnl(dev));
1146 static size_t br_port_get_slave_size(const struct net_device *brdev,
1147 const struct net_device *dev)
1149 return br_port_info_size();
1152 static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = {
1153 [IFLA_BR_FORWARD_DELAY] = { .type = NLA_U32 },
1154 [IFLA_BR_HELLO_TIME] = { .type = NLA_U32 },
1155 [IFLA_BR_MAX_AGE] = { .type = NLA_U32 },
1156 [IFLA_BR_AGEING_TIME] = { .type = NLA_U32 },
1157 [IFLA_BR_STP_STATE] = { .type = NLA_U32 },
1158 [IFLA_BR_PRIORITY] = { .type = NLA_U16 },
1159 [IFLA_BR_VLAN_FILTERING] = { .type = NLA_U8 },
1160 [IFLA_BR_VLAN_PROTOCOL] = { .type = NLA_U16 },
1161 [IFLA_BR_GROUP_FWD_MASK] = { .type = NLA_U16 },
1162 [IFLA_BR_GROUP_ADDR] = { .type = NLA_BINARY,
1164 [IFLA_BR_MCAST_ROUTER] = { .type = NLA_U8 },
1165 [IFLA_BR_MCAST_SNOOPING] = { .type = NLA_U8 },
1166 [IFLA_BR_MCAST_QUERY_USE_IFADDR] = { .type = NLA_U8 },
1167 [IFLA_BR_MCAST_QUERIER] = { .type = NLA_U8 },
1168 [IFLA_BR_MCAST_HASH_ELASTICITY] = { .type = NLA_U32 },
1169 [IFLA_BR_MCAST_HASH_MAX] = { .type = NLA_U32 },
1170 [IFLA_BR_MCAST_LAST_MEMBER_CNT] = { .type = NLA_U32 },
1171 [IFLA_BR_MCAST_STARTUP_QUERY_CNT] = { .type = NLA_U32 },
1172 [IFLA_BR_MCAST_LAST_MEMBER_INTVL] = { .type = NLA_U64 },
1173 [IFLA_BR_MCAST_MEMBERSHIP_INTVL] = { .type = NLA_U64 },
1174 [IFLA_BR_MCAST_QUERIER_INTVL] = { .type = NLA_U64 },
1175 [IFLA_BR_MCAST_QUERY_INTVL] = { .type = NLA_U64 },
1176 [IFLA_BR_MCAST_QUERY_RESPONSE_INTVL] = { .type = NLA_U64 },
1177 [IFLA_BR_MCAST_STARTUP_QUERY_INTVL] = { .type = NLA_U64 },
1178 [IFLA_BR_NF_CALL_IPTABLES] = { .type = NLA_U8 },
1179 [IFLA_BR_NF_CALL_IP6TABLES] = { .type = NLA_U8 },
1180 [IFLA_BR_NF_CALL_ARPTABLES] = { .type = NLA_U8 },
1181 [IFLA_BR_VLAN_DEFAULT_PVID] = { .type = NLA_U16 },
1182 [IFLA_BR_VLAN_STATS_ENABLED] = { .type = NLA_U8 },
1183 [IFLA_BR_MCAST_STATS_ENABLED] = { .type = NLA_U8 },
1184 [IFLA_BR_MCAST_IGMP_VERSION] = { .type = NLA_U8 },
1185 [IFLA_BR_MCAST_MLD_VERSION] = { .type = NLA_U8 },
1186 [IFLA_BR_VLAN_STATS_PER_PORT] = { .type = NLA_U8 },
1187 [IFLA_BR_MULTI_BOOLOPT] =
1188 NLA_POLICY_EXACT_LEN(sizeof(struct br_boolopt_multi)),
1191 static int br_changelink(struct net_device *brdev, struct nlattr *tb[],
1192 struct nlattr *data[],
1193 struct netlink_ext_ack *extack)
1195 struct net_bridge *br = netdev_priv(brdev);
1201 if (data[IFLA_BR_FORWARD_DELAY]) {
1202 err = br_set_forward_delay(br, nla_get_u32(data[IFLA_BR_FORWARD_DELAY]));
1207 if (data[IFLA_BR_HELLO_TIME]) {
1208 err = br_set_hello_time(br, nla_get_u32(data[IFLA_BR_HELLO_TIME]));
1213 if (data[IFLA_BR_MAX_AGE]) {
1214 err = br_set_max_age(br, nla_get_u32(data[IFLA_BR_MAX_AGE]));
1219 if (data[IFLA_BR_AGEING_TIME]) {
1220 err = br_set_ageing_time(br, nla_get_u32(data[IFLA_BR_AGEING_TIME]));
1225 if (data[IFLA_BR_STP_STATE]) {
1226 u32 stp_enabled = nla_get_u32(data[IFLA_BR_STP_STATE]);
1228 err = br_stp_set_enabled(br, stp_enabled, extack);
1233 if (data[IFLA_BR_PRIORITY]) {
1234 u32 priority = nla_get_u16(data[IFLA_BR_PRIORITY]);
1236 br_stp_set_bridge_priority(br, priority);
1239 if (data[IFLA_BR_VLAN_FILTERING]) {
1240 u8 vlan_filter = nla_get_u8(data[IFLA_BR_VLAN_FILTERING]);
1242 err = __br_vlan_filter_toggle(br, vlan_filter);
1247 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1248 if (data[IFLA_BR_VLAN_PROTOCOL]) {
1249 __be16 vlan_proto = nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL]);
1251 err = __br_vlan_set_proto(br, vlan_proto);
1256 if (data[IFLA_BR_VLAN_DEFAULT_PVID]) {
1257 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]);
1259 err = __br_vlan_set_default_pvid(br, defpvid, extack);
1264 if (data[IFLA_BR_VLAN_STATS_ENABLED]) {
1265 __u8 vlan_stats = nla_get_u8(data[IFLA_BR_VLAN_STATS_ENABLED]);
1267 err = br_vlan_set_stats(br, vlan_stats);
1272 if (data[IFLA_BR_VLAN_STATS_PER_PORT]) {
1273 __u8 per_port = nla_get_u8(data[IFLA_BR_VLAN_STATS_PER_PORT]);
1275 err = br_vlan_set_stats_per_port(br, per_port);
1281 if (data[IFLA_BR_GROUP_FWD_MASK]) {
1282 u16 fwd_mask = nla_get_u16(data[IFLA_BR_GROUP_FWD_MASK]);
1284 if (fwd_mask & BR_GROUPFWD_RESTRICTED)
1286 br->group_fwd_mask = fwd_mask;
1289 if (data[IFLA_BR_GROUP_ADDR]) {
1290 u8 new_addr[ETH_ALEN];
1292 if (nla_len(data[IFLA_BR_GROUP_ADDR]) != ETH_ALEN)
1294 memcpy(new_addr, nla_data(data[IFLA_BR_GROUP_ADDR]), ETH_ALEN);
1295 if (!is_link_local_ether_addr(new_addr))
1297 if (new_addr[5] == 1 || /* 802.3x Pause address */
1298 new_addr[5] == 2 || /* 802.3ad Slow protocols */
1299 new_addr[5] == 3) /* 802.1X PAE address */
1301 spin_lock_bh(&br->lock);
1302 memcpy(br->group_addr, new_addr, sizeof(br->group_addr));
1303 spin_unlock_bh(&br->lock);
1304 br_opt_toggle(br, BROPT_GROUP_ADDR_SET, true);
1305 br_recalculate_fwd_mask(br);
1308 if (data[IFLA_BR_FDB_FLUSH])
1311 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1312 if (data[IFLA_BR_MCAST_ROUTER]) {
1313 u8 multicast_router = nla_get_u8(data[IFLA_BR_MCAST_ROUTER]);
1315 err = br_multicast_set_router(br, multicast_router);
1320 if (data[IFLA_BR_MCAST_SNOOPING]) {
1321 u8 mcast_snooping = nla_get_u8(data[IFLA_BR_MCAST_SNOOPING]);
1323 br_multicast_toggle(br, mcast_snooping);
1326 if (data[IFLA_BR_MCAST_QUERY_USE_IFADDR]) {
1329 val = nla_get_u8(data[IFLA_BR_MCAST_QUERY_USE_IFADDR]);
1330 br_opt_toggle(br, BROPT_MULTICAST_QUERY_USE_IFADDR, !!val);
1333 if (data[IFLA_BR_MCAST_QUERIER]) {
1334 u8 mcast_querier = nla_get_u8(data[IFLA_BR_MCAST_QUERIER]);
1336 err = br_multicast_set_querier(br, mcast_querier);
1341 if (data[IFLA_BR_MCAST_HASH_ELASTICITY])
1342 br_warn(br, "the hash_elasticity option has been deprecated and is always %u\n",
1345 if (data[IFLA_BR_MCAST_HASH_MAX])
1346 br->hash_max = nla_get_u32(data[IFLA_BR_MCAST_HASH_MAX]);
1348 if (data[IFLA_BR_MCAST_LAST_MEMBER_CNT]) {
1349 u32 val = nla_get_u32(data[IFLA_BR_MCAST_LAST_MEMBER_CNT]);
1351 br->multicast_last_member_count = val;
1354 if (data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]) {
1355 u32 val = nla_get_u32(data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]);
1357 br->multicast_startup_query_count = val;
1360 if (data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]) {
1361 u64 val = nla_get_u64(data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]);
1363 br->multicast_last_member_interval = clock_t_to_jiffies(val);
1366 if (data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]) {
1367 u64 val = nla_get_u64(data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]);
1369 br->multicast_membership_interval = clock_t_to_jiffies(val);
1372 if (data[IFLA_BR_MCAST_QUERIER_INTVL]) {
1373 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERIER_INTVL]);
1375 br->multicast_querier_interval = clock_t_to_jiffies(val);
1378 if (data[IFLA_BR_MCAST_QUERY_INTVL]) {
1379 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_INTVL]);
1381 br->multicast_query_interval = clock_t_to_jiffies(val);
1384 if (data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]) {
1385 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]);
1387 br->multicast_query_response_interval = clock_t_to_jiffies(val);
1390 if (data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]) {
1391 u64 val = nla_get_u64(data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]);
1393 br->multicast_startup_query_interval = clock_t_to_jiffies(val);
1396 if (data[IFLA_BR_MCAST_STATS_ENABLED]) {
1399 mcast_stats = nla_get_u8(data[IFLA_BR_MCAST_STATS_ENABLED]);
1400 br_opt_toggle(br, BROPT_MULTICAST_STATS_ENABLED, !!mcast_stats);
1403 if (data[IFLA_BR_MCAST_IGMP_VERSION]) {
1406 igmp_version = nla_get_u8(data[IFLA_BR_MCAST_IGMP_VERSION]);
1407 err = br_multicast_set_igmp_version(br, igmp_version);
1412 #if IS_ENABLED(CONFIG_IPV6)
1413 if (data[IFLA_BR_MCAST_MLD_VERSION]) {
1416 mld_version = nla_get_u8(data[IFLA_BR_MCAST_MLD_VERSION]);
1417 err = br_multicast_set_mld_version(br, mld_version);
1423 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1424 if (data[IFLA_BR_NF_CALL_IPTABLES]) {
1425 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IPTABLES]);
1427 br_opt_toggle(br, BROPT_NF_CALL_IPTABLES, !!val);
1430 if (data[IFLA_BR_NF_CALL_IP6TABLES]) {
1431 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IP6TABLES]);
1433 br_opt_toggle(br, BROPT_NF_CALL_IP6TABLES, !!val);
1436 if (data[IFLA_BR_NF_CALL_ARPTABLES]) {
1437 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_ARPTABLES]);
1439 br_opt_toggle(br, BROPT_NF_CALL_ARPTABLES, !!val);
1443 if (data[IFLA_BR_MULTI_BOOLOPT]) {
1444 struct br_boolopt_multi *bm;
1446 bm = nla_data(data[IFLA_BR_MULTI_BOOLOPT]);
1447 err = br_boolopt_multi_toggle(br, bm, extack);
1455 static int br_dev_newlink(struct net *src_net, struct net_device *dev,
1456 struct nlattr *tb[], struct nlattr *data[],
1457 struct netlink_ext_ack *extack)
1459 struct net_bridge *br = netdev_priv(dev);
1462 err = register_netdevice(dev);
1466 if (tb[IFLA_ADDRESS]) {
1467 spin_lock_bh(&br->lock);
1468 br_stp_change_bridge_id(br, nla_data(tb[IFLA_ADDRESS]));
1469 spin_unlock_bh(&br->lock);
1472 err = br_changelink(dev, tb, data, extack);
1474 br_dev_delete(dev, NULL);
1479 static size_t br_get_size(const struct net_device *brdev)
1481 return nla_total_size(sizeof(u32)) + /* IFLA_BR_FORWARD_DELAY */
1482 nla_total_size(sizeof(u32)) + /* IFLA_BR_HELLO_TIME */
1483 nla_total_size(sizeof(u32)) + /* IFLA_BR_MAX_AGE */
1484 nla_total_size(sizeof(u32)) + /* IFLA_BR_AGEING_TIME */
1485 nla_total_size(sizeof(u32)) + /* IFLA_BR_STP_STATE */
1486 nla_total_size(sizeof(u16)) + /* IFLA_BR_PRIORITY */
1487 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_FILTERING */
1488 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1489 nla_total_size(sizeof(__be16)) + /* IFLA_BR_VLAN_PROTOCOL */
1490 nla_total_size(sizeof(u16)) + /* IFLA_BR_VLAN_DEFAULT_PVID */
1491 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_ENABLED */
1492 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_PER_PORT */
1494 nla_total_size(sizeof(u16)) + /* IFLA_BR_GROUP_FWD_MASK */
1495 nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_ROOT_ID */
1496 nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_BRIDGE_ID */
1497 nla_total_size(sizeof(u16)) + /* IFLA_BR_ROOT_PORT */
1498 nla_total_size(sizeof(u32)) + /* IFLA_BR_ROOT_PATH_COST */
1499 nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE */
1500 nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE_DETECTED */
1501 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_HELLO_TIMER */
1502 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TCN_TIMER */
1503 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TOPOLOGY_CHANGE_TIMER */
1504 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_GC_TIMER */
1505 nla_total_size(ETH_ALEN) + /* IFLA_BR_GROUP_ADDR */
1506 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1507 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_ROUTER */
1508 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_SNOOPING */
1509 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERY_USE_IFADDR */
1510 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERIER */
1511 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_STATS_ENABLED */
1512 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_ELASTICITY */
1513 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_MAX */
1514 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_LAST_MEMBER_CNT */
1515 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_STARTUP_QUERY_CNT */
1516 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_LAST_MEMBER_INTVL */
1517 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_MEMBERSHIP_INTVL */
1518 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERIER_INTVL */
1519 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_INTVL */
1520 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_RESPONSE_INTVL */
1521 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_STARTUP_QUERY_INTVL */
1522 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_IGMP_VERSION */
1523 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_MLD_VERSION */
1525 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1526 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IPTABLES */
1527 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IP6TABLES */
1528 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_ARPTABLES */
1530 nla_total_size(sizeof(struct br_boolopt_multi)) + /* IFLA_BR_MULTI_BOOLOPT */
1534 static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev)
1536 struct net_bridge *br = netdev_priv(brdev);
1537 u32 forward_delay = jiffies_to_clock_t(br->forward_delay);
1538 u32 hello_time = jiffies_to_clock_t(br->hello_time);
1539 u32 age_time = jiffies_to_clock_t(br->max_age);
1540 u32 ageing_time = jiffies_to_clock_t(br->ageing_time);
1541 u32 stp_enabled = br->stp_enabled;
1542 u16 priority = (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1];
1543 u8 vlan_enabled = br_vlan_enabled(br->dev);
1544 struct br_boolopt_multi bm;
1547 clockval = br_timer_value(&br->hello_timer);
1548 if (nla_put_u64_64bit(skb, IFLA_BR_HELLO_TIMER, clockval, IFLA_BR_PAD))
1550 clockval = br_timer_value(&br->tcn_timer);
1551 if (nla_put_u64_64bit(skb, IFLA_BR_TCN_TIMER, clockval, IFLA_BR_PAD))
1553 clockval = br_timer_value(&br->topology_change_timer);
1554 if (nla_put_u64_64bit(skb, IFLA_BR_TOPOLOGY_CHANGE_TIMER, clockval,
1557 clockval = br_timer_value(&br->gc_work.timer);
1558 if (nla_put_u64_64bit(skb, IFLA_BR_GC_TIMER, clockval, IFLA_BR_PAD))
1561 br_boolopt_multi_get(br, &bm);
1562 if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) ||
1563 nla_put_u32(skb, IFLA_BR_HELLO_TIME, hello_time) ||
1564 nla_put_u32(skb, IFLA_BR_MAX_AGE, age_time) ||
1565 nla_put_u32(skb, IFLA_BR_AGEING_TIME, ageing_time) ||
1566 nla_put_u32(skb, IFLA_BR_STP_STATE, stp_enabled) ||
1567 nla_put_u16(skb, IFLA_BR_PRIORITY, priority) ||
1568 nla_put_u8(skb, IFLA_BR_VLAN_FILTERING, vlan_enabled) ||
1569 nla_put_u16(skb, IFLA_BR_GROUP_FWD_MASK, br->group_fwd_mask) ||
1570 nla_put(skb, IFLA_BR_BRIDGE_ID, sizeof(struct ifla_bridge_id),
1572 nla_put(skb, IFLA_BR_ROOT_ID, sizeof(struct ifla_bridge_id),
1573 &br->designated_root) ||
1574 nla_put_u16(skb, IFLA_BR_ROOT_PORT, br->root_port) ||
1575 nla_put_u32(skb, IFLA_BR_ROOT_PATH_COST, br->root_path_cost) ||
1576 nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE, br->topology_change) ||
1577 nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE_DETECTED,
1578 br->topology_change_detected) ||
1579 nla_put(skb, IFLA_BR_GROUP_ADDR, ETH_ALEN, br->group_addr) ||
1580 nla_put(skb, IFLA_BR_MULTI_BOOLOPT, sizeof(bm), &bm))
1583 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1584 if (nla_put_be16(skb, IFLA_BR_VLAN_PROTOCOL, br->vlan_proto) ||
1585 nla_put_u16(skb, IFLA_BR_VLAN_DEFAULT_PVID, br->default_pvid) ||
1586 nla_put_u8(skb, IFLA_BR_VLAN_STATS_ENABLED,
1587 br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) ||
1588 nla_put_u8(skb, IFLA_BR_VLAN_STATS_PER_PORT,
1589 br_opt_get(br, BROPT_VLAN_STATS_PER_PORT)))
1592 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1593 if (nla_put_u8(skb, IFLA_BR_MCAST_ROUTER, br->multicast_router) ||
1594 nla_put_u8(skb, IFLA_BR_MCAST_SNOOPING,
1595 br_opt_get(br, BROPT_MULTICAST_ENABLED)) ||
1596 nla_put_u8(skb, IFLA_BR_MCAST_QUERY_USE_IFADDR,
1597 br_opt_get(br, BROPT_MULTICAST_QUERY_USE_IFADDR)) ||
1598 nla_put_u8(skb, IFLA_BR_MCAST_QUERIER,
1599 br_opt_get(br, BROPT_MULTICAST_QUERIER)) ||
1600 nla_put_u8(skb, IFLA_BR_MCAST_STATS_ENABLED,
1601 br_opt_get(br, BROPT_MULTICAST_STATS_ENABLED)) ||
1602 nla_put_u32(skb, IFLA_BR_MCAST_HASH_ELASTICITY, RHT_ELASTICITY) ||
1603 nla_put_u32(skb, IFLA_BR_MCAST_HASH_MAX, br->hash_max) ||
1604 nla_put_u32(skb, IFLA_BR_MCAST_LAST_MEMBER_CNT,
1605 br->multicast_last_member_count) ||
1606 nla_put_u32(skb, IFLA_BR_MCAST_STARTUP_QUERY_CNT,
1607 br->multicast_startup_query_count) ||
1608 nla_put_u8(skb, IFLA_BR_MCAST_IGMP_VERSION,
1609 br->multicast_igmp_version))
1611 #if IS_ENABLED(CONFIG_IPV6)
1612 if (nla_put_u8(skb, IFLA_BR_MCAST_MLD_VERSION,
1613 br->multicast_mld_version))
1616 clockval = jiffies_to_clock_t(br->multicast_last_member_interval);
1617 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_LAST_MEMBER_INTVL, clockval,
1620 clockval = jiffies_to_clock_t(br->multicast_membership_interval);
1621 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_MEMBERSHIP_INTVL, clockval,
1624 clockval = jiffies_to_clock_t(br->multicast_querier_interval);
1625 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERIER_INTVL, clockval,
1628 clockval = jiffies_to_clock_t(br->multicast_query_interval);
1629 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_INTVL, clockval,
1632 clockval = jiffies_to_clock_t(br->multicast_query_response_interval);
1633 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_RESPONSE_INTVL, clockval,
1636 clockval = jiffies_to_clock_t(br->multicast_startup_query_interval);
1637 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_STARTUP_QUERY_INTVL, clockval,
1641 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1642 if (nla_put_u8(skb, IFLA_BR_NF_CALL_IPTABLES,
1643 br_opt_get(br, BROPT_NF_CALL_IPTABLES) ? 1 : 0) ||
1644 nla_put_u8(skb, IFLA_BR_NF_CALL_IP6TABLES,
1645 br_opt_get(br, BROPT_NF_CALL_IP6TABLES) ? 1 : 0) ||
1646 nla_put_u8(skb, IFLA_BR_NF_CALL_ARPTABLES,
1647 br_opt_get(br, BROPT_NF_CALL_ARPTABLES) ? 1 : 0))
1654 static size_t br_get_linkxstats_size(const struct net_device *dev, int attr)
1656 struct net_bridge_port *p = NULL;
1657 struct net_bridge_vlan_group *vg;
1658 struct net_bridge_vlan *v;
1659 struct net_bridge *br;
1663 case IFLA_STATS_LINK_XSTATS:
1664 br = netdev_priv(dev);
1665 vg = br_vlan_group(br);
1667 case IFLA_STATS_LINK_XSTATS_SLAVE:
1668 p = br_port_get_rtnl(dev);
1672 vg = nbp_vlan_group(p);
1679 /* we need to count all, even placeholder entries */
1680 list_for_each_entry(v, &vg->vlan_list, vlist)
1684 return numvls * nla_total_size(sizeof(struct bridge_vlan_xstats)) +
1685 nla_total_size(sizeof(struct br_mcast_stats)) +
1689 static int br_fill_linkxstats(struct sk_buff *skb,
1690 const struct net_device *dev,
1691 int *prividx, int attr)
1693 struct nlattr *nla __maybe_unused;
1694 struct net_bridge_port *p = NULL;
1695 struct net_bridge_vlan_group *vg;
1696 struct net_bridge_vlan *v;
1697 struct net_bridge *br;
1698 struct nlattr *nest;
1702 case IFLA_STATS_LINK_XSTATS:
1703 br = netdev_priv(dev);
1704 vg = br_vlan_group(br);
1706 case IFLA_STATS_LINK_XSTATS_SLAVE:
1707 p = br_port_get_rtnl(dev);
1711 vg = nbp_vlan_group(p);
1717 nest = nla_nest_start_noflag(skb, LINK_XSTATS_TYPE_BRIDGE);
1724 pvid = br_get_pvid(vg);
1725 list_for_each_entry(v, &vg->vlan_list, vlist) {
1726 struct bridge_vlan_xstats vxi;
1727 struct pcpu_sw_netstats stats;
1729 if (++vl_idx < *prividx)
1731 memset(&vxi, 0, sizeof(vxi));
1733 vxi.flags = v->flags;
1735 vxi.flags |= BRIDGE_VLAN_INFO_PVID;
1736 br_vlan_get_stats(v, &stats);
1737 vxi.rx_bytes = stats.rx_bytes;
1738 vxi.rx_packets = stats.rx_packets;
1739 vxi.tx_bytes = stats.tx_bytes;
1740 vxi.tx_packets = stats.tx_packets;
1742 if (nla_put(skb, BRIDGE_XSTATS_VLAN, sizeof(vxi), &vxi))
1743 goto nla_put_failure;
1747 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1748 if (++vl_idx >= *prividx) {
1749 nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_MCAST,
1750 sizeof(struct br_mcast_stats),
1753 goto nla_put_failure;
1754 br_multicast_get_stats(br, p, nla_data(nla));
1759 nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_STP,
1760 sizeof(p->stp_xstats),
1763 goto nla_put_failure;
1765 spin_lock_bh(&br->lock);
1766 memcpy(nla_data(nla), &p->stp_xstats, sizeof(p->stp_xstats));
1767 spin_unlock_bh(&br->lock);
1770 nla_nest_end(skb, nest);
1776 nla_nest_end(skb, nest);
1782 static struct rtnl_af_ops br_af_ops __read_mostly = {
1783 .family = AF_BRIDGE,
1784 .get_link_af_size = br_get_link_af_size_filtered,
1787 struct rtnl_link_ops br_link_ops __read_mostly = {
1789 .priv_size = sizeof(struct net_bridge),
1790 .setup = br_dev_setup,
1791 .maxtype = IFLA_BR_MAX,
1792 .policy = br_policy,
1793 .validate = br_validate,
1794 .newlink = br_dev_newlink,
1795 .changelink = br_changelink,
1796 .dellink = br_dev_delete,
1797 .get_size = br_get_size,
1798 .fill_info = br_fill_info,
1799 .fill_linkxstats = br_fill_linkxstats,
1800 .get_linkxstats_size = br_get_linkxstats_size,
1802 .slave_maxtype = IFLA_BRPORT_MAX,
1803 .slave_policy = br_port_policy,
1804 .slave_changelink = br_port_slave_changelink,
1805 .get_slave_size = br_port_get_slave_size,
1806 .fill_slave_info = br_port_fill_slave_info,
1809 int __init br_netlink_init(void)
1814 br_vlan_rtnl_init();
1815 rtnl_af_register(&br_af_ops);
1817 err = rtnl_link_register(&br_link_ops);
1824 rtnl_af_unregister(&br_af_ops);
1829 void br_netlink_fini(void)
1832 br_vlan_rtnl_uninit();
1833 rtnl_af_unregister(&br_af_ops);
1834 rtnl_link_unregister(&br_link_ops);