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_tunnel.h"
21 static int __get_num_vlan_infos(struct net_bridge_vlan_group *vg,
24 struct net_bridge_vlan *v;
25 u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0;
29 if (!(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED))
32 pvid = br_get_pvid(vg);
33 /* Count number of vlan infos */
34 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
36 /* only a context, bridge vlan not activated */
37 if (!br_vlan_should_use(v))
40 flags |= BRIDGE_VLAN_INFO_PVID;
42 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
43 flags |= BRIDGE_VLAN_INFO_UNTAGGED;
45 if (vid_range_start == 0) {
47 } else if ((v->vid - vid_range_end) == 1 &&
48 flags == vid_range_flags) {
49 vid_range_end = v->vid;
52 if ((vid_range_end - vid_range_start) > 0)
58 vid_range_start = v->vid;
59 vid_range_end = v->vid;
60 vid_range_flags = flags;
63 if (vid_range_start != 0) {
64 if ((vid_range_end - vid_range_start) > 0)
73 static int br_get_num_vlan_infos(struct net_bridge_vlan_group *vg,
81 if (filter_mask & RTEXT_FILTER_BRVLAN)
85 num_vlans = __get_num_vlan_infos(vg, filter_mask);
91 static size_t br_get_link_af_size_filtered(const struct net_device *dev,
94 struct net_bridge_vlan_group *vg = NULL;
95 struct net_bridge_port *p = NULL;
96 struct net_bridge *br;
101 if (netif_is_bridge_port(dev)) {
102 p = br_port_get_rcu(dev);
103 vg = nbp_vlan_group_rcu(p);
104 } else if (dev->priv_flags & IFF_EBRIDGE) {
105 br = netdev_priv(dev);
106 vg = br_vlan_group_rcu(br);
108 num_vlan_infos = br_get_num_vlan_infos(vg, filter_mask);
111 if (p && (p->flags & BR_VLAN_TUNNEL))
112 vinfo_sz += br_get_vlan_tunnel_info_size(vg);
114 /* Each VLAN is returned in bridge_vlan_info along with flags */
115 vinfo_sz += num_vlan_infos * nla_total_size(sizeof(struct bridge_vlan_info));
120 static inline size_t br_port_info_size(void)
122 return nla_total_size(1) /* IFLA_BRPORT_STATE */
123 + nla_total_size(2) /* IFLA_BRPORT_PRIORITY */
124 + nla_total_size(4) /* IFLA_BRPORT_COST */
125 + nla_total_size(1) /* IFLA_BRPORT_MODE */
126 + nla_total_size(1) /* IFLA_BRPORT_GUARD */
127 + nla_total_size(1) /* IFLA_BRPORT_PROTECT */
128 + nla_total_size(1) /* IFLA_BRPORT_FAST_LEAVE */
129 + nla_total_size(1) /* IFLA_BRPORT_MCAST_TO_UCAST */
130 + nla_total_size(1) /* IFLA_BRPORT_LEARNING */
131 + nla_total_size(1) /* IFLA_BRPORT_UNICAST_FLOOD */
132 + nla_total_size(1) /* IFLA_BRPORT_MCAST_FLOOD */
133 + nla_total_size(1) /* IFLA_BRPORT_BCAST_FLOOD */
134 + nla_total_size(1) /* IFLA_BRPORT_PROXYARP */
135 + nla_total_size(1) /* IFLA_BRPORT_PROXYARP_WIFI */
136 + nla_total_size(1) /* IFLA_BRPORT_VLAN_TUNNEL */
137 + nla_total_size(1) /* IFLA_BRPORT_NEIGH_SUPPRESS */
138 + nla_total_size(1) /* IFLA_BRPORT_ISOLATED */
139 + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_ROOT_ID */
140 + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_BRIDGE_ID */
141 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_DESIGNATED_PORT */
142 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_DESIGNATED_COST */
143 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_ID */
144 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_NO */
145 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_TOPOLOGY_CHANGE_ACK */
146 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_CONFIG_PENDING */
147 + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_MESSAGE_AGE_TIMER */
148 + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_FORWARD_DELAY_TIMER */
149 + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_HOLD_TIMER */
150 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
151 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_MULTICAST_ROUTER */
153 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_GROUP_FWD_MASK */
157 static inline size_t br_nlmsg_size(struct net_device *dev, u32 filter_mask)
159 return NLMSG_ALIGN(sizeof(struct ifinfomsg))
160 + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */
161 + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */
162 + nla_total_size(4) /* IFLA_MASTER */
163 + nla_total_size(4) /* IFLA_MTU */
164 + nla_total_size(4) /* IFLA_LINK */
165 + nla_total_size(1) /* IFLA_OPERSTATE */
166 + nla_total_size(br_port_info_size()) /* IFLA_PROTINFO */
167 + nla_total_size(br_get_link_af_size_filtered(dev,
168 filter_mask)) /* IFLA_AF_SPEC */
169 + nla_total_size(4); /* IFLA_BRPORT_BACKUP_PORT */
172 static int br_port_fill_attrs(struct sk_buff *skb,
173 const struct net_bridge_port *p)
175 u8 mode = !!(p->flags & BR_HAIRPIN_MODE);
176 struct net_bridge_port *backup_p;
179 if (nla_put_u8(skb, IFLA_BRPORT_STATE, p->state) ||
180 nla_put_u16(skb, IFLA_BRPORT_PRIORITY, p->priority) ||
181 nla_put_u32(skb, IFLA_BRPORT_COST, p->path_cost) ||
182 nla_put_u8(skb, IFLA_BRPORT_MODE, mode) ||
183 nla_put_u8(skb, IFLA_BRPORT_GUARD, !!(p->flags & BR_BPDU_GUARD)) ||
184 nla_put_u8(skb, IFLA_BRPORT_PROTECT,
185 !!(p->flags & BR_ROOT_BLOCK)) ||
186 nla_put_u8(skb, IFLA_BRPORT_FAST_LEAVE,
187 !!(p->flags & BR_MULTICAST_FAST_LEAVE)) ||
188 nla_put_u8(skb, IFLA_BRPORT_MCAST_TO_UCAST,
189 !!(p->flags & BR_MULTICAST_TO_UNICAST)) ||
190 nla_put_u8(skb, IFLA_BRPORT_LEARNING, !!(p->flags & BR_LEARNING)) ||
191 nla_put_u8(skb, IFLA_BRPORT_UNICAST_FLOOD,
192 !!(p->flags & BR_FLOOD)) ||
193 nla_put_u8(skb, IFLA_BRPORT_MCAST_FLOOD,
194 !!(p->flags & BR_MCAST_FLOOD)) ||
195 nla_put_u8(skb, IFLA_BRPORT_BCAST_FLOOD,
196 !!(p->flags & BR_BCAST_FLOOD)) ||
197 nla_put_u8(skb, IFLA_BRPORT_PROXYARP, !!(p->flags & BR_PROXYARP)) ||
198 nla_put_u8(skb, IFLA_BRPORT_PROXYARP_WIFI,
199 !!(p->flags & BR_PROXYARP_WIFI)) ||
200 nla_put(skb, IFLA_BRPORT_ROOT_ID, sizeof(struct ifla_bridge_id),
201 &p->designated_root) ||
202 nla_put(skb, IFLA_BRPORT_BRIDGE_ID, sizeof(struct ifla_bridge_id),
203 &p->designated_bridge) ||
204 nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_PORT, p->designated_port) ||
205 nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_COST, p->designated_cost) ||
206 nla_put_u16(skb, IFLA_BRPORT_ID, p->port_id) ||
207 nla_put_u16(skb, IFLA_BRPORT_NO, p->port_no) ||
208 nla_put_u8(skb, IFLA_BRPORT_TOPOLOGY_CHANGE_ACK,
209 p->topology_change_ack) ||
210 nla_put_u8(skb, IFLA_BRPORT_CONFIG_PENDING, p->config_pending) ||
211 nla_put_u8(skb, IFLA_BRPORT_VLAN_TUNNEL, !!(p->flags &
213 nla_put_u16(skb, IFLA_BRPORT_GROUP_FWD_MASK, p->group_fwd_mask) ||
214 nla_put_u8(skb, IFLA_BRPORT_NEIGH_SUPPRESS,
215 !!(p->flags & BR_NEIGH_SUPPRESS)) ||
216 nla_put_u8(skb, IFLA_BRPORT_ISOLATED, !!(p->flags & BR_ISOLATED)))
219 timerval = br_timer_value(&p->message_age_timer);
220 if (nla_put_u64_64bit(skb, IFLA_BRPORT_MESSAGE_AGE_TIMER, timerval,
223 timerval = br_timer_value(&p->forward_delay_timer);
224 if (nla_put_u64_64bit(skb, IFLA_BRPORT_FORWARD_DELAY_TIMER, timerval,
227 timerval = br_timer_value(&p->hold_timer);
228 if (nla_put_u64_64bit(skb, IFLA_BRPORT_HOLD_TIMER, timerval,
232 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
233 if (nla_put_u8(skb, IFLA_BRPORT_MULTICAST_ROUTER,
234 p->multicast_router))
238 /* we might be called only with br->lock */
240 backup_p = rcu_dereference(p->backup_port);
242 nla_put_u32(skb, IFLA_BRPORT_BACKUP_PORT,
243 backup_p->dev->ifindex);
249 static int br_fill_ifvlaninfo_range(struct sk_buff *skb, u16 vid_start,
250 u16 vid_end, u16 flags)
252 struct bridge_vlan_info vinfo;
254 if ((vid_end - vid_start) > 0) {
255 /* add range to skb */
256 vinfo.vid = vid_start;
257 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_BEGIN;
258 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
259 sizeof(vinfo), &vinfo))
260 goto nla_put_failure;
263 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_END;
264 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
265 sizeof(vinfo), &vinfo))
266 goto nla_put_failure;
268 vinfo.vid = vid_start;
270 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
271 sizeof(vinfo), &vinfo))
272 goto nla_put_failure;
281 static int br_fill_ifvlaninfo_compressed(struct sk_buff *skb,
282 struct net_bridge_vlan_group *vg)
284 struct net_bridge_vlan *v;
285 u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0;
289 /* Pack IFLA_BRIDGE_VLAN_INFO's for every vlan
290 * and mark vlan info with begin and end flags
291 * if vlaninfo represents a range
293 pvid = br_get_pvid(vg);
294 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
296 if (!br_vlan_should_use(v))
299 flags |= BRIDGE_VLAN_INFO_PVID;
301 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
302 flags |= BRIDGE_VLAN_INFO_UNTAGGED;
304 if (vid_range_start == 0) {
306 } else if ((v->vid - vid_range_end) == 1 &&
307 flags == vid_range_flags) {
308 vid_range_end = v->vid;
311 err = br_fill_ifvlaninfo_range(skb, vid_range_start,
319 vid_range_start = v->vid;
320 vid_range_end = v->vid;
321 vid_range_flags = flags;
324 if (vid_range_start != 0) {
325 /* Call it once more to send any left over vlans */
326 err = br_fill_ifvlaninfo_range(skb, vid_range_start,
336 static int br_fill_ifvlaninfo(struct sk_buff *skb,
337 struct net_bridge_vlan_group *vg)
339 struct bridge_vlan_info vinfo;
340 struct net_bridge_vlan *v;
343 pvid = br_get_pvid(vg);
344 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
345 if (!br_vlan_should_use(v))
351 vinfo.flags |= BRIDGE_VLAN_INFO_PVID;
353 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
354 vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED;
356 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
357 sizeof(vinfo), &vinfo))
358 goto nla_put_failure;
368 * Create one netlink message for one interface
369 * Contains port and master info as well as carrier and bridge state.
371 static int br_fill_ifinfo(struct sk_buff *skb,
372 const struct net_bridge_port *port,
373 u32 pid, u32 seq, int event, unsigned int flags,
374 u32 filter_mask, const struct net_device *dev)
376 u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN;
377 struct net_bridge *br;
378 struct ifinfomsg *hdr;
379 struct nlmsghdr *nlh;
384 br = netdev_priv(dev);
386 br_debug(br, "br_fill_info event %d port %s master %s\n",
387 event, dev->name, br->dev->name);
389 nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags);
393 hdr = nlmsg_data(nlh);
394 hdr->ifi_family = AF_BRIDGE;
396 hdr->ifi_type = dev->type;
397 hdr->ifi_index = dev->ifindex;
398 hdr->ifi_flags = dev_get_flags(dev);
401 if (nla_put_string(skb, IFLA_IFNAME, dev->name) ||
402 nla_put_u32(skb, IFLA_MASTER, br->dev->ifindex) ||
403 nla_put_u32(skb, IFLA_MTU, dev->mtu) ||
404 nla_put_u8(skb, IFLA_OPERSTATE, operstate) ||
406 nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) ||
407 (dev->ifindex != dev_get_iflink(dev) &&
408 nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev))))
409 goto nla_put_failure;
411 if (event == RTM_NEWLINK && port) {
414 nest = nla_nest_start(skb, IFLA_PROTINFO);
415 if (nest == NULL || br_port_fill_attrs(skb, port) < 0)
416 goto nla_put_failure;
417 nla_nest_end(skb, nest);
420 /* Check if the VID information is requested */
421 if ((filter_mask & RTEXT_FILTER_BRVLAN) ||
422 (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) {
423 struct net_bridge_vlan_group *vg;
427 /* RCU needed because of the VLAN locking rules (rcu || rtnl) */
430 vg = nbp_vlan_group_rcu(port);
432 vg = br_vlan_group_rcu(br);
434 if (!vg || !vg->num_vlans) {
438 af = nla_nest_start_noflag(skb, IFLA_AF_SPEC);
441 goto nla_put_failure;
443 if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)
444 err = br_fill_ifvlaninfo_compressed(skb, vg);
446 err = br_fill_ifvlaninfo(skb, vg);
448 if (port && (port->flags & BR_VLAN_TUNNEL))
449 err = br_fill_vlan_tunnel_info(skb, vg);
452 goto nla_put_failure;
453 nla_nest_end(skb, af);
461 nlmsg_cancel(skb, nlh);
465 /* Notify listeners of a change in bridge or port information */
466 void br_ifinfo_notify(int event, const struct net_bridge *br,
467 const struct net_bridge_port *port)
469 u32 filter = RTEXT_FILTER_BRVLAN_COMPRESSED;
470 struct net_device *dev;
476 if (WARN_ON(!port && !br))
482 port_no = port->port_no;
488 br_debug(br, "port %u(%s) event %d\n", port_no, dev->name, event);
490 skb = nlmsg_new(br_nlmsg_size(dev, filter), GFP_ATOMIC);
494 err = br_fill_ifinfo(skb, port, 0, 0, event, 0, filter, dev);
496 /* -EMSGSIZE implies BUG in br_nlmsg_size() */
497 WARN_ON(err == -EMSGSIZE);
501 rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC);
504 rtnl_set_sk_err(net, RTNLGRP_LINK, err);
508 * Dump information about all ports, in response to GETLINK
510 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq,
511 struct net_device *dev, u32 filter_mask, int nlflags)
513 struct net_bridge_port *port = br_port_get_rtnl(dev);
515 if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) &&
516 !(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED))
519 return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags,
523 static int br_vlan_info(struct net_bridge *br, struct net_bridge_port *p,
524 int cmd, struct bridge_vlan_info *vinfo, bool *changed,
525 struct netlink_ext_ack *extack)
533 /* if the MASTER flag is set this will act on the global
534 * per-VLAN entry as well
536 err = nbp_vlan_add(p, vinfo->vid, vinfo->flags,
537 &curr_change, extack);
539 vinfo->flags |= BRIDGE_VLAN_INFO_BRENTRY;
540 err = br_vlan_add(br, vinfo->vid, vinfo->flags,
541 &curr_change, extack);
549 if (!nbp_vlan_delete(p, vinfo->vid))
552 if ((vinfo->flags & BRIDGE_VLAN_INFO_MASTER) &&
553 !br_vlan_delete(p->br, vinfo->vid))
555 } else if (!br_vlan_delete(br, vinfo->vid)) {
564 int br_process_vlan_info(struct net_bridge *br,
565 struct net_bridge_port *p, int cmd,
566 struct bridge_vlan_info *vinfo_curr,
567 struct bridge_vlan_info **vinfo_last,
569 struct netlink_ext_ack *extack)
573 if (!br_vlan_valid_id(vinfo_curr->vid, extack))
576 /* needed for vlan-only NEWVLAN/DELVLAN notifications */
577 rtm_cmd = br_afspec_cmd_to_rtm(cmd);
579 if (vinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) {
580 if (!br_vlan_valid_range(vinfo_curr, *vinfo_last, extack))
582 *vinfo_last = vinfo_curr;
587 struct bridge_vlan_info tmp_vinfo;
588 int v, v_change_start = 0;
590 if (!br_vlan_valid_range(vinfo_curr, *vinfo_last, extack))
593 memcpy(&tmp_vinfo, *vinfo_last,
594 sizeof(struct bridge_vlan_info));
595 for (v = (*vinfo_last)->vid; v <= vinfo_curr->vid; v++) {
596 bool curr_change = false;
599 err = br_vlan_info(br, p, cmd, &tmp_vinfo, &curr_change,
604 *changed = curr_change;
608 /* nothing to notify yet */
611 br_vlan_notify(br, p, v_change_start,
616 /* v_change_start is set only if the last/whole range changed */
618 br_vlan_notify(br, p, v_change_start,
626 err = br_vlan_info(br, p, cmd, vinfo_curr, changed, extack);
628 br_vlan_notify(br, p, vinfo_curr->vid, 0, rtm_cmd);
633 static int br_afspec(struct net_bridge *br,
634 struct net_bridge_port *p,
635 struct nlattr *af_spec,
636 int cmd, bool *changed,
637 struct netlink_ext_ack *extack)
639 struct bridge_vlan_info *vinfo_curr = NULL;
640 struct bridge_vlan_info *vinfo_last = NULL;
642 struct vtunnel_info tinfo_last = {};
643 struct vtunnel_info tinfo_curr = {};
646 nla_for_each_nested(attr, af_spec, rem) {
648 switch (nla_type(attr)) {
649 case IFLA_BRIDGE_VLAN_TUNNEL_INFO:
650 if (!p || !(p->flags & BR_VLAN_TUNNEL))
652 err = br_parse_vlan_tunnel_info(attr, &tinfo_curr);
655 err = br_process_vlan_tunnel_info(br, p, cmd,
662 case IFLA_BRIDGE_VLAN_INFO:
663 if (nla_len(attr) != sizeof(struct bridge_vlan_info))
665 vinfo_curr = nla_data(attr);
666 err = br_process_vlan_info(br, p, cmd, vinfo_curr,
667 &vinfo_last, changed,
678 static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = {
679 [IFLA_BRPORT_STATE] = { .type = NLA_U8 },
680 [IFLA_BRPORT_COST] = { .type = NLA_U32 },
681 [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 },
682 [IFLA_BRPORT_MODE] = { .type = NLA_U8 },
683 [IFLA_BRPORT_GUARD] = { .type = NLA_U8 },
684 [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 },
685 [IFLA_BRPORT_FAST_LEAVE]= { .type = NLA_U8 },
686 [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 },
687 [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 },
688 [IFLA_BRPORT_PROXYARP] = { .type = NLA_U8 },
689 [IFLA_BRPORT_PROXYARP_WIFI] = { .type = NLA_U8 },
690 [IFLA_BRPORT_MULTICAST_ROUTER] = { .type = NLA_U8 },
691 [IFLA_BRPORT_MCAST_TO_UCAST] = { .type = NLA_U8 },
692 [IFLA_BRPORT_MCAST_FLOOD] = { .type = NLA_U8 },
693 [IFLA_BRPORT_BCAST_FLOOD] = { .type = NLA_U8 },
694 [IFLA_BRPORT_VLAN_TUNNEL] = { .type = NLA_U8 },
695 [IFLA_BRPORT_GROUP_FWD_MASK] = { .type = NLA_U16 },
696 [IFLA_BRPORT_NEIGH_SUPPRESS] = { .type = NLA_U8 },
697 [IFLA_BRPORT_ISOLATED] = { .type = NLA_U8 },
698 [IFLA_BRPORT_BACKUP_PORT] = { .type = NLA_U32 },
701 /* Change the state of the port and notify spanning tree */
702 static int br_set_port_state(struct net_bridge_port *p, u8 state)
704 if (state > BR_STATE_BLOCKING)
707 /* if kernel STP is running, don't allow changes */
708 if (p->br->stp_enabled == BR_KERNEL_STP)
711 /* if device is not up, change is not allowed
712 * if link is not present, only allowable state is disabled
714 if (!netif_running(p->dev) ||
715 (!netif_oper_up(p->dev) && state != BR_STATE_DISABLED))
718 br_set_state(p, state);
719 br_port_state_selection(p->br);
723 /* Set/clear or port flags based on attribute */
724 static int br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[],
725 int attrtype, unsigned long mask)
733 if (nla_get_u8(tb[attrtype]))
734 flags = p->flags | mask;
736 flags = p->flags & ~mask;
738 err = br_switchdev_set_port_flag(p, flags, mask);
746 /* Process bridge protocol info on port */
747 static int br_setport(struct net_bridge_port *p, struct nlattr *tb[])
749 unsigned long old_flags = p->flags;
750 bool br_vlan_tunnel_old = false;
753 err = br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE);
757 err = br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD);
761 err = br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE);
765 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK);
769 err = br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING);
773 err = br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD);
777 err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_FLOOD, BR_MCAST_FLOOD);
781 err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_TO_UCAST, BR_MULTICAST_TO_UNICAST);
785 err = br_set_port_flag(p, tb, IFLA_BRPORT_BCAST_FLOOD, BR_BCAST_FLOOD);
789 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP);
793 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI);
797 br_vlan_tunnel_old = (p->flags & BR_VLAN_TUNNEL) ? true : false;
798 err = br_set_port_flag(p, tb, IFLA_BRPORT_VLAN_TUNNEL, BR_VLAN_TUNNEL);
802 if (br_vlan_tunnel_old && !(p->flags & BR_VLAN_TUNNEL))
803 nbp_vlan_tunnel_info_flush(p);
805 if (tb[IFLA_BRPORT_COST]) {
806 err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST]));
811 if (tb[IFLA_BRPORT_PRIORITY]) {
812 err = br_stp_set_port_priority(p, nla_get_u16(tb[IFLA_BRPORT_PRIORITY]));
817 if (tb[IFLA_BRPORT_STATE]) {
818 err = br_set_port_state(p, nla_get_u8(tb[IFLA_BRPORT_STATE]));
823 if (tb[IFLA_BRPORT_FLUSH])
824 br_fdb_delete_by_port(p->br, p, 0, 0);
826 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
827 if (tb[IFLA_BRPORT_MULTICAST_ROUTER]) {
828 u8 mcast_router = nla_get_u8(tb[IFLA_BRPORT_MULTICAST_ROUTER]);
830 err = br_multicast_set_port_router(p, mcast_router);
836 if (tb[IFLA_BRPORT_GROUP_FWD_MASK]) {
837 u16 fwd_mask = nla_get_u16(tb[IFLA_BRPORT_GROUP_FWD_MASK]);
839 if (fwd_mask & BR_GROUPFWD_MACPAUSE)
841 p->group_fwd_mask = fwd_mask;
844 err = br_set_port_flag(p, tb, IFLA_BRPORT_NEIGH_SUPPRESS,
849 err = br_set_port_flag(p, tb, IFLA_BRPORT_ISOLATED, BR_ISOLATED);
853 if (tb[IFLA_BRPORT_BACKUP_PORT]) {
854 struct net_device *backup_dev = NULL;
857 backup_ifindex = nla_get_u32(tb[IFLA_BRPORT_BACKUP_PORT]);
858 if (backup_ifindex) {
859 backup_dev = __dev_get_by_index(dev_net(p->dev),
865 err = nbp_backup_change(p, backup_dev);
870 br_port_flags_change(p, old_flags ^ p->flags);
874 /* Change state and parameters on port. */
875 int br_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags,
876 struct netlink_ext_ack *extack)
878 struct net_bridge *br = (struct net_bridge *)netdev_priv(dev);
879 struct nlattr *tb[IFLA_BRPORT_MAX + 1];
880 struct net_bridge_port *p;
881 struct nlattr *protinfo;
882 struct nlattr *afspec;
883 bool changed = false;
886 protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO);
887 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
888 if (!protinfo && !afspec)
891 p = br_port_get_rtnl(dev);
892 /* We want to accept dev as bridge itself if the AF_SPEC
893 * is set to see if someone is setting vlan info on the bridge
899 if (protinfo->nla_type & NLA_F_NESTED) {
900 err = nla_parse_nested_deprecated(tb, IFLA_BRPORT_MAX,
907 spin_lock_bh(&p->br->lock);
908 err = br_setport(p, tb);
909 spin_unlock_bh(&p->br->lock);
911 /* Binary compatibility with old RSTP */
912 if (nla_len(protinfo) < sizeof(u8))
915 spin_lock_bh(&p->br->lock);
916 err = br_set_port_state(p, nla_get_u8(protinfo));
917 spin_unlock_bh(&p->br->lock);
925 err = br_afspec(br, p, afspec, RTM_SETLINK, &changed, extack);
928 br_ifinfo_notify(RTM_NEWLINK, br, p);
933 /* Delete port information */
934 int br_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags)
936 struct net_bridge *br = (struct net_bridge *)netdev_priv(dev);
937 struct net_bridge_port *p;
938 struct nlattr *afspec;
939 bool changed = false;
942 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
946 p = br_port_get_rtnl(dev);
947 /* We want to accept dev as bridge itself as well */
948 if (!p && !(dev->priv_flags & IFF_EBRIDGE))
951 err = br_afspec(br, p, afspec, RTM_DELLINK, &changed, NULL);
953 /* Send RTM_NEWLINK because userspace
954 * expects RTM_NEWLINK for vlan dels
956 br_ifinfo_notify(RTM_NEWLINK, br, p);
961 static int br_validate(struct nlattr *tb[], struct nlattr *data[],
962 struct netlink_ext_ack *extack)
964 if (tb[IFLA_ADDRESS]) {
965 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
967 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
968 return -EADDRNOTAVAIL;
974 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
975 if (data[IFLA_BR_VLAN_PROTOCOL]) {
976 switch (nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL])) {
977 case htons(ETH_P_8021Q):
978 case htons(ETH_P_8021AD):
981 return -EPROTONOSUPPORT;
985 if (data[IFLA_BR_VLAN_DEFAULT_PVID]) {
986 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]);
988 if (defpvid >= VLAN_VID_MASK)
996 static int br_port_slave_changelink(struct net_device *brdev,
997 struct net_device *dev,
999 struct nlattr *data[],
1000 struct netlink_ext_ack *extack)
1002 struct net_bridge *br = netdev_priv(brdev);
1008 spin_lock_bh(&br->lock);
1009 ret = br_setport(br_port_get_rtnl(dev), data);
1010 spin_unlock_bh(&br->lock);
1015 static int br_port_fill_slave_info(struct sk_buff *skb,
1016 const struct net_device *brdev,
1017 const struct net_device *dev)
1019 return br_port_fill_attrs(skb, br_port_get_rtnl(dev));
1022 static size_t br_port_get_slave_size(const struct net_device *brdev,
1023 const struct net_device *dev)
1025 return br_port_info_size();
1028 static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = {
1029 [IFLA_BR_FORWARD_DELAY] = { .type = NLA_U32 },
1030 [IFLA_BR_HELLO_TIME] = { .type = NLA_U32 },
1031 [IFLA_BR_MAX_AGE] = { .type = NLA_U32 },
1032 [IFLA_BR_AGEING_TIME] = { .type = NLA_U32 },
1033 [IFLA_BR_STP_STATE] = { .type = NLA_U32 },
1034 [IFLA_BR_PRIORITY] = { .type = NLA_U16 },
1035 [IFLA_BR_VLAN_FILTERING] = { .type = NLA_U8 },
1036 [IFLA_BR_VLAN_PROTOCOL] = { .type = NLA_U16 },
1037 [IFLA_BR_GROUP_FWD_MASK] = { .type = NLA_U16 },
1038 [IFLA_BR_GROUP_ADDR] = { .type = NLA_BINARY,
1040 [IFLA_BR_MCAST_ROUTER] = { .type = NLA_U8 },
1041 [IFLA_BR_MCAST_SNOOPING] = { .type = NLA_U8 },
1042 [IFLA_BR_MCAST_QUERY_USE_IFADDR] = { .type = NLA_U8 },
1043 [IFLA_BR_MCAST_QUERIER] = { .type = NLA_U8 },
1044 [IFLA_BR_MCAST_HASH_ELASTICITY] = { .type = NLA_U32 },
1045 [IFLA_BR_MCAST_HASH_MAX] = { .type = NLA_U32 },
1046 [IFLA_BR_MCAST_LAST_MEMBER_CNT] = { .type = NLA_U32 },
1047 [IFLA_BR_MCAST_STARTUP_QUERY_CNT] = { .type = NLA_U32 },
1048 [IFLA_BR_MCAST_LAST_MEMBER_INTVL] = { .type = NLA_U64 },
1049 [IFLA_BR_MCAST_MEMBERSHIP_INTVL] = { .type = NLA_U64 },
1050 [IFLA_BR_MCAST_QUERIER_INTVL] = { .type = NLA_U64 },
1051 [IFLA_BR_MCAST_QUERY_INTVL] = { .type = NLA_U64 },
1052 [IFLA_BR_MCAST_QUERY_RESPONSE_INTVL] = { .type = NLA_U64 },
1053 [IFLA_BR_MCAST_STARTUP_QUERY_INTVL] = { .type = NLA_U64 },
1054 [IFLA_BR_NF_CALL_IPTABLES] = { .type = NLA_U8 },
1055 [IFLA_BR_NF_CALL_IP6TABLES] = { .type = NLA_U8 },
1056 [IFLA_BR_NF_CALL_ARPTABLES] = { .type = NLA_U8 },
1057 [IFLA_BR_VLAN_DEFAULT_PVID] = { .type = NLA_U16 },
1058 [IFLA_BR_VLAN_STATS_ENABLED] = { .type = NLA_U8 },
1059 [IFLA_BR_MCAST_STATS_ENABLED] = { .type = NLA_U8 },
1060 [IFLA_BR_MCAST_IGMP_VERSION] = { .type = NLA_U8 },
1061 [IFLA_BR_MCAST_MLD_VERSION] = { .type = NLA_U8 },
1062 [IFLA_BR_VLAN_STATS_PER_PORT] = { .type = NLA_U8 },
1063 [IFLA_BR_MULTI_BOOLOPT] = { .type = NLA_EXACT_LEN,
1064 .len = sizeof(struct br_boolopt_multi) },
1067 static int br_changelink(struct net_device *brdev, struct nlattr *tb[],
1068 struct nlattr *data[],
1069 struct netlink_ext_ack *extack)
1071 struct net_bridge *br = netdev_priv(brdev);
1077 if (data[IFLA_BR_FORWARD_DELAY]) {
1078 err = br_set_forward_delay(br, nla_get_u32(data[IFLA_BR_FORWARD_DELAY]));
1083 if (data[IFLA_BR_HELLO_TIME]) {
1084 err = br_set_hello_time(br, nla_get_u32(data[IFLA_BR_HELLO_TIME]));
1089 if (data[IFLA_BR_MAX_AGE]) {
1090 err = br_set_max_age(br, nla_get_u32(data[IFLA_BR_MAX_AGE]));
1095 if (data[IFLA_BR_AGEING_TIME]) {
1096 err = br_set_ageing_time(br, nla_get_u32(data[IFLA_BR_AGEING_TIME]));
1101 if (data[IFLA_BR_STP_STATE]) {
1102 u32 stp_enabled = nla_get_u32(data[IFLA_BR_STP_STATE]);
1104 br_stp_set_enabled(br, stp_enabled);
1107 if (data[IFLA_BR_PRIORITY]) {
1108 u32 priority = nla_get_u16(data[IFLA_BR_PRIORITY]);
1110 br_stp_set_bridge_priority(br, priority);
1113 if (data[IFLA_BR_VLAN_FILTERING]) {
1114 u8 vlan_filter = nla_get_u8(data[IFLA_BR_VLAN_FILTERING]);
1116 err = __br_vlan_filter_toggle(br, vlan_filter);
1121 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1122 if (data[IFLA_BR_VLAN_PROTOCOL]) {
1123 __be16 vlan_proto = nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL]);
1125 err = __br_vlan_set_proto(br, vlan_proto);
1130 if (data[IFLA_BR_VLAN_DEFAULT_PVID]) {
1131 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]);
1133 err = __br_vlan_set_default_pvid(br, defpvid, extack);
1138 if (data[IFLA_BR_VLAN_STATS_ENABLED]) {
1139 __u8 vlan_stats = nla_get_u8(data[IFLA_BR_VLAN_STATS_ENABLED]);
1141 err = br_vlan_set_stats(br, vlan_stats);
1146 if (data[IFLA_BR_VLAN_STATS_PER_PORT]) {
1147 __u8 per_port = nla_get_u8(data[IFLA_BR_VLAN_STATS_PER_PORT]);
1149 err = br_vlan_set_stats_per_port(br, per_port);
1155 if (data[IFLA_BR_GROUP_FWD_MASK]) {
1156 u16 fwd_mask = nla_get_u16(data[IFLA_BR_GROUP_FWD_MASK]);
1158 if (fwd_mask & BR_GROUPFWD_RESTRICTED)
1160 br->group_fwd_mask = fwd_mask;
1163 if (data[IFLA_BR_GROUP_ADDR]) {
1164 u8 new_addr[ETH_ALEN];
1166 if (nla_len(data[IFLA_BR_GROUP_ADDR]) != ETH_ALEN)
1168 memcpy(new_addr, nla_data(data[IFLA_BR_GROUP_ADDR]), ETH_ALEN);
1169 if (!is_link_local_ether_addr(new_addr))
1171 if (new_addr[5] == 1 || /* 802.3x Pause address */
1172 new_addr[5] == 2 || /* 802.3ad Slow protocols */
1173 new_addr[5] == 3) /* 802.1X PAE address */
1175 spin_lock_bh(&br->lock);
1176 memcpy(br->group_addr, new_addr, sizeof(br->group_addr));
1177 spin_unlock_bh(&br->lock);
1178 br_opt_toggle(br, BROPT_GROUP_ADDR_SET, true);
1179 br_recalculate_fwd_mask(br);
1182 if (data[IFLA_BR_FDB_FLUSH])
1185 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1186 if (data[IFLA_BR_MCAST_ROUTER]) {
1187 u8 multicast_router = nla_get_u8(data[IFLA_BR_MCAST_ROUTER]);
1189 err = br_multicast_set_router(br, multicast_router);
1194 if (data[IFLA_BR_MCAST_SNOOPING]) {
1195 u8 mcast_snooping = nla_get_u8(data[IFLA_BR_MCAST_SNOOPING]);
1197 br_multicast_toggle(br, mcast_snooping);
1200 if (data[IFLA_BR_MCAST_QUERY_USE_IFADDR]) {
1203 val = nla_get_u8(data[IFLA_BR_MCAST_QUERY_USE_IFADDR]);
1204 br_opt_toggle(br, BROPT_MULTICAST_QUERY_USE_IFADDR, !!val);
1207 if (data[IFLA_BR_MCAST_QUERIER]) {
1208 u8 mcast_querier = nla_get_u8(data[IFLA_BR_MCAST_QUERIER]);
1210 err = br_multicast_set_querier(br, mcast_querier);
1215 if (data[IFLA_BR_MCAST_HASH_ELASTICITY])
1216 br_warn(br, "the hash_elasticity option has been deprecated and is always %u\n",
1219 if (data[IFLA_BR_MCAST_HASH_MAX])
1220 br->hash_max = nla_get_u32(data[IFLA_BR_MCAST_HASH_MAX]);
1222 if (data[IFLA_BR_MCAST_LAST_MEMBER_CNT]) {
1223 u32 val = nla_get_u32(data[IFLA_BR_MCAST_LAST_MEMBER_CNT]);
1225 br->multicast_last_member_count = val;
1228 if (data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]) {
1229 u32 val = nla_get_u32(data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]);
1231 br->multicast_startup_query_count = val;
1234 if (data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]) {
1235 u64 val = nla_get_u64(data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]);
1237 br->multicast_last_member_interval = clock_t_to_jiffies(val);
1240 if (data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]) {
1241 u64 val = nla_get_u64(data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]);
1243 br->multicast_membership_interval = clock_t_to_jiffies(val);
1246 if (data[IFLA_BR_MCAST_QUERIER_INTVL]) {
1247 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERIER_INTVL]);
1249 br->multicast_querier_interval = clock_t_to_jiffies(val);
1252 if (data[IFLA_BR_MCAST_QUERY_INTVL]) {
1253 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_INTVL]);
1255 br->multicast_query_interval = clock_t_to_jiffies(val);
1258 if (data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]) {
1259 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]);
1261 br->multicast_query_response_interval = clock_t_to_jiffies(val);
1264 if (data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]) {
1265 u64 val = nla_get_u64(data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]);
1267 br->multicast_startup_query_interval = clock_t_to_jiffies(val);
1270 if (data[IFLA_BR_MCAST_STATS_ENABLED]) {
1273 mcast_stats = nla_get_u8(data[IFLA_BR_MCAST_STATS_ENABLED]);
1274 br_opt_toggle(br, BROPT_MULTICAST_STATS_ENABLED, !!mcast_stats);
1277 if (data[IFLA_BR_MCAST_IGMP_VERSION]) {
1280 igmp_version = nla_get_u8(data[IFLA_BR_MCAST_IGMP_VERSION]);
1281 err = br_multicast_set_igmp_version(br, igmp_version);
1286 #if IS_ENABLED(CONFIG_IPV6)
1287 if (data[IFLA_BR_MCAST_MLD_VERSION]) {
1290 mld_version = nla_get_u8(data[IFLA_BR_MCAST_MLD_VERSION]);
1291 err = br_multicast_set_mld_version(br, mld_version);
1297 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1298 if (data[IFLA_BR_NF_CALL_IPTABLES]) {
1299 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IPTABLES]);
1301 br_opt_toggle(br, BROPT_NF_CALL_IPTABLES, !!val);
1304 if (data[IFLA_BR_NF_CALL_IP6TABLES]) {
1305 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IP6TABLES]);
1307 br_opt_toggle(br, BROPT_NF_CALL_IP6TABLES, !!val);
1310 if (data[IFLA_BR_NF_CALL_ARPTABLES]) {
1311 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_ARPTABLES]);
1313 br_opt_toggle(br, BROPT_NF_CALL_ARPTABLES, !!val);
1317 if (data[IFLA_BR_MULTI_BOOLOPT]) {
1318 struct br_boolopt_multi *bm;
1320 bm = nla_data(data[IFLA_BR_MULTI_BOOLOPT]);
1321 err = br_boolopt_multi_toggle(br, bm, extack);
1329 static int br_dev_newlink(struct net *src_net, struct net_device *dev,
1330 struct nlattr *tb[], struct nlattr *data[],
1331 struct netlink_ext_ack *extack)
1333 struct net_bridge *br = netdev_priv(dev);
1336 err = register_netdevice(dev);
1340 if (tb[IFLA_ADDRESS]) {
1341 spin_lock_bh(&br->lock);
1342 br_stp_change_bridge_id(br, nla_data(tb[IFLA_ADDRESS]));
1343 spin_unlock_bh(&br->lock);
1346 err = br_changelink(dev, tb, data, extack);
1348 br_dev_delete(dev, NULL);
1353 static size_t br_get_size(const struct net_device *brdev)
1355 return nla_total_size(sizeof(u32)) + /* IFLA_BR_FORWARD_DELAY */
1356 nla_total_size(sizeof(u32)) + /* IFLA_BR_HELLO_TIME */
1357 nla_total_size(sizeof(u32)) + /* IFLA_BR_MAX_AGE */
1358 nla_total_size(sizeof(u32)) + /* IFLA_BR_AGEING_TIME */
1359 nla_total_size(sizeof(u32)) + /* IFLA_BR_STP_STATE */
1360 nla_total_size(sizeof(u16)) + /* IFLA_BR_PRIORITY */
1361 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_FILTERING */
1362 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1363 nla_total_size(sizeof(__be16)) + /* IFLA_BR_VLAN_PROTOCOL */
1364 nla_total_size(sizeof(u16)) + /* IFLA_BR_VLAN_DEFAULT_PVID */
1365 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_ENABLED */
1366 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_PER_PORT */
1368 nla_total_size(sizeof(u16)) + /* IFLA_BR_GROUP_FWD_MASK */
1369 nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_ROOT_ID */
1370 nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_BRIDGE_ID */
1371 nla_total_size(sizeof(u16)) + /* IFLA_BR_ROOT_PORT */
1372 nla_total_size(sizeof(u32)) + /* IFLA_BR_ROOT_PATH_COST */
1373 nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE */
1374 nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE_DETECTED */
1375 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_HELLO_TIMER */
1376 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TCN_TIMER */
1377 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TOPOLOGY_CHANGE_TIMER */
1378 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_GC_TIMER */
1379 nla_total_size(ETH_ALEN) + /* IFLA_BR_GROUP_ADDR */
1380 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1381 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_ROUTER */
1382 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_SNOOPING */
1383 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERY_USE_IFADDR */
1384 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERIER */
1385 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_STATS_ENABLED */
1386 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_ELASTICITY */
1387 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_MAX */
1388 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_LAST_MEMBER_CNT */
1389 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_STARTUP_QUERY_CNT */
1390 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_LAST_MEMBER_INTVL */
1391 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_MEMBERSHIP_INTVL */
1392 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERIER_INTVL */
1393 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_INTVL */
1394 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_RESPONSE_INTVL */
1395 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_STARTUP_QUERY_INTVL */
1396 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_IGMP_VERSION */
1397 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_MLD_VERSION */
1399 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1400 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IPTABLES */
1401 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IP6TABLES */
1402 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_ARPTABLES */
1404 nla_total_size(sizeof(struct br_boolopt_multi)) + /* IFLA_BR_MULTI_BOOLOPT */
1408 static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev)
1410 struct net_bridge *br = netdev_priv(brdev);
1411 u32 forward_delay = jiffies_to_clock_t(br->forward_delay);
1412 u32 hello_time = jiffies_to_clock_t(br->hello_time);
1413 u32 age_time = jiffies_to_clock_t(br->max_age);
1414 u32 ageing_time = jiffies_to_clock_t(br->ageing_time);
1415 u32 stp_enabled = br->stp_enabled;
1416 u16 priority = (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1];
1417 u8 vlan_enabled = br_vlan_enabled(br->dev);
1418 struct br_boolopt_multi bm;
1421 clockval = br_timer_value(&br->hello_timer);
1422 if (nla_put_u64_64bit(skb, IFLA_BR_HELLO_TIMER, clockval, IFLA_BR_PAD))
1424 clockval = br_timer_value(&br->tcn_timer);
1425 if (nla_put_u64_64bit(skb, IFLA_BR_TCN_TIMER, clockval, IFLA_BR_PAD))
1427 clockval = br_timer_value(&br->topology_change_timer);
1428 if (nla_put_u64_64bit(skb, IFLA_BR_TOPOLOGY_CHANGE_TIMER, clockval,
1431 clockval = br_timer_value(&br->gc_work.timer);
1432 if (nla_put_u64_64bit(skb, IFLA_BR_GC_TIMER, clockval, IFLA_BR_PAD))
1435 br_boolopt_multi_get(br, &bm);
1436 if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) ||
1437 nla_put_u32(skb, IFLA_BR_HELLO_TIME, hello_time) ||
1438 nla_put_u32(skb, IFLA_BR_MAX_AGE, age_time) ||
1439 nla_put_u32(skb, IFLA_BR_AGEING_TIME, ageing_time) ||
1440 nla_put_u32(skb, IFLA_BR_STP_STATE, stp_enabled) ||
1441 nla_put_u16(skb, IFLA_BR_PRIORITY, priority) ||
1442 nla_put_u8(skb, IFLA_BR_VLAN_FILTERING, vlan_enabled) ||
1443 nla_put_u16(skb, IFLA_BR_GROUP_FWD_MASK, br->group_fwd_mask) ||
1444 nla_put(skb, IFLA_BR_BRIDGE_ID, sizeof(struct ifla_bridge_id),
1446 nla_put(skb, IFLA_BR_ROOT_ID, sizeof(struct ifla_bridge_id),
1447 &br->designated_root) ||
1448 nla_put_u16(skb, IFLA_BR_ROOT_PORT, br->root_port) ||
1449 nla_put_u32(skb, IFLA_BR_ROOT_PATH_COST, br->root_path_cost) ||
1450 nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE, br->topology_change) ||
1451 nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE_DETECTED,
1452 br->topology_change_detected) ||
1453 nla_put(skb, IFLA_BR_GROUP_ADDR, ETH_ALEN, br->group_addr) ||
1454 nla_put(skb, IFLA_BR_MULTI_BOOLOPT, sizeof(bm), &bm))
1457 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1458 if (nla_put_be16(skb, IFLA_BR_VLAN_PROTOCOL, br->vlan_proto) ||
1459 nla_put_u16(skb, IFLA_BR_VLAN_DEFAULT_PVID, br->default_pvid) ||
1460 nla_put_u8(skb, IFLA_BR_VLAN_STATS_ENABLED,
1461 br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) ||
1462 nla_put_u8(skb, IFLA_BR_VLAN_STATS_PER_PORT,
1463 br_opt_get(br, BROPT_VLAN_STATS_PER_PORT)))
1466 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1467 if (nla_put_u8(skb, IFLA_BR_MCAST_ROUTER, br->multicast_router) ||
1468 nla_put_u8(skb, IFLA_BR_MCAST_SNOOPING,
1469 br_opt_get(br, BROPT_MULTICAST_ENABLED)) ||
1470 nla_put_u8(skb, IFLA_BR_MCAST_QUERY_USE_IFADDR,
1471 br_opt_get(br, BROPT_MULTICAST_QUERY_USE_IFADDR)) ||
1472 nla_put_u8(skb, IFLA_BR_MCAST_QUERIER,
1473 br_opt_get(br, BROPT_MULTICAST_QUERIER)) ||
1474 nla_put_u8(skb, IFLA_BR_MCAST_STATS_ENABLED,
1475 br_opt_get(br, BROPT_MULTICAST_STATS_ENABLED)) ||
1476 nla_put_u32(skb, IFLA_BR_MCAST_HASH_ELASTICITY, RHT_ELASTICITY) ||
1477 nla_put_u32(skb, IFLA_BR_MCAST_HASH_MAX, br->hash_max) ||
1478 nla_put_u32(skb, IFLA_BR_MCAST_LAST_MEMBER_CNT,
1479 br->multicast_last_member_count) ||
1480 nla_put_u32(skb, IFLA_BR_MCAST_STARTUP_QUERY_CNT,
1481 br->multicast_startup_query_count) ||
1482 nla_put_u8(skb, IFLA_BR_MCAST_IGMP_VERSION,
1483 br->multicast_igmp_version))
1485 #if IS_ENABLED(CONFIG_IPV6)
1486 if (nla_put_u8(skb, IFLA_BR_MCAST_MLD_VERSION,
1487 br->multicast_mld_version))
1490 clockval = jiffies_to_clock_t(br->multicast_last_member_interval);
1491 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_LAST_MEMBER_INTVL, clockval,
1494 clockval = jiffies_to_clock_t(br->multicast_membership_interval);
1495 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_MEMBERSHIP_INTVL, clockval,
1498 clockval = jiffies_to_clock_t(br->multicast_querier_interval);
1499 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERIER_INTVL, clockval,
1502 clockval = jiffies_to_clock_t(br->multicast_query_interval);
1503 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_INTVL, clockval,
1506 clockval = jiffies_to_clock_t(br->multicast_query_response_interval);
1507 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_RESPONSE_INTVL, clockval,
1510 clockval = jiffies_to_clock_t(br->multicast_startup_query_interval);
1511 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_STARTUP_QUERY_INTVL, clockval,
1515 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1516 if (nla_put_u8(skb, IFLA_BR_NF_CALL_IPTABLES,
1517 br_opt_get(br, BROPT_NF_CALL_IPTABLES) ? 1 : 0) ||
1518 nla_put_u8(skb, IFLA_BR_NF_CALL_IP6TABLES,
1519 br_opt_get(br, BROPT_NF_CALL_IP6TABLES) ? 1 : 0) ||
1520 nla_put_u8(skb, IFLA_BR_NF_CALL_ARPTABLES,
1521 br_opt_get(br, BROPT_NF_CALL_ARPTABLES) ? 1 : 0))
1528 static size_t br_get_linkxstats_size(const struct net_device *dev, int attr)
1530 struct net_bridge_port *p = NULL;
1531 struct net_bridge_vlan_group *vg;
1532 struct net_bridge_vlan *v;
1533 struct net_bridge *br;
1537 case IFLA_STATS_LINK_XSTATS:
1538 br = netdev_priv(dev);
1539 vg = br_vlan_group(br);
1541 case IFLA_STATS_LINK_XSTATS_SLAVE:
1542 p = br_port_get_rtnl(dev);
1546 vg = nbp_vlan_group(p);
1553 /* we need to count all, even placeholder entries */
1554 list_for_each_entry(v, &vg->vlan_list, vlist)
1558 return numvls * nla_total_size(sizeof(struct bridge_vlan_xstats)) +
1559 nla_total_size(sizeof(struct br_mcast_stats)) +
1563 static int br_fill_linkxstats(struct sk_buff *skb,
1564 const struct net_device *dev,
1565 int *prividx, int attr)
1567 struct nlattr *nla __maybe_unused;
1568 struct net_bridge_port *p = NULL;
1569 struct net_bridge_vlan_group *vg;
1570 struct net_bridge_vlan *v;
1571 struct net_bridge *br;
1572 struct nlattr *nest;
1576 case IFLA_STATS_LINK_XSTATS:
1577 br = netdev_priv(dev);
1578 vg = br_vlan_group(br);
1580 case IFLA_STATS_LINK_XSTATS_SLAVE:
1581 p = br_port_get_rtnl(dev);
1585 vg = nbp_vlan_group(p);
1591 nest = nla_nest_start_noflag(skb, LINK_XSTATS_TYPE_BRIDGE);
1598 pvid = br_get_pvid(vg);
1599 list_for_each_entry(v, &vg->vlan_list, vlist) {
1600 struct bridge_vlan_xstats vxi;
1601 struct br_vlan_stats stats;
1603 if (++vl_idx < *prividx)
1605 memset(&vxi, 0, sizeof(vxi));
1607 vxi.flags = v->flags;
1609 vxi.flags |= BRIDGE_VLAN_INFO_PVID;
1610 br_vlan_get_stats(v, &stats);
1611 vxi.rx_bytes = stats.rx_bytes;
1612 vxi.rx_packets = stats.rx_packets;
1613 vxi.tx_bytes = stats.tx_bytes;
1614 vxi.tx_packets = stats.tx_packets;
1616 if (nla_put(skb, BRIDGE_XSTATS_VLAN, sizeof(vxi), &vxi))
1617 goto nla_put_failure;
1621 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1622 if (++vl_idx >= *prividx) {
1623 nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_MCAST,
1624 sizeof(struct br_mcast_stats),
1627 goto nla_put_failure;
1628 br_multicast_get_stats(br, p, nla_data(nla));
1633 nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_STP,
1634 sizeof(p->stp_xstats),
1637 goto nla_put_failure;
1639 spin_lock_bh(&br->lock);
1640 memcpy(nla_data(nla), &p->stp_xstats, sizeof(p->stp_xstats));
1641 spin_unlock_bh(&br->lock);
1644 nla_nest_end(skb, nest);
1650 nla_nest_end(skb, nest);
1656 static struct rtnl_af_ops br_af_ops __read_mostly = {
1657 .family = AF_BRIDGE,
1658 .get_link_af_size = br_get_link_af_size_filtered,
1661 struct rtnl_link_ops br_link_ops __read_mostly = {
1663 .priv_size = sizeof(struct net_bridge),
1664 .setup = br_dev_setup,
1665 .maxtype = IFLA_BR_MAX,
1666 .policy = br_policy,
1667 .validate = br_validate,
1668 .newlink = br_dev_newlink,
1669 .changelink = br_changelink,
1670 .dellink = br_dev_delete,
1671 .get_size = br_get_size,
1672 .fill_info = br_fill_info,
1673 .fill_linkxstats = br_fill_linkxstats,
1674 .get_linkxstats_size = br_get_linkxstats_size,
1676 .slave_maxtype = IFLA_BRPORT_MAX,
1677 .slave_policy = br_port_policy,
1678 .slave_changelink = br_port_slave_changelink,
1679 .get_slave_size = br_port_get_slave_size,
1680 .fill_slave_info = br_port_fill_slave_info,
1683 int __init br_netlink_init(void)
1688 br_vlan_rtnl_init();
1689 rtnl_af_register(&br_af_ops);
1691 err = rtnl_link_register(&br_link_ops);
1698 rtnl_af_unregister(&br_af_ops);
1703 void br_netlink_fini(void)
1706 br_vlan_rtnl_uninit();
1707 rtnl_af_unregister(&br_af_ops);
1708 rtnl_link_unregister(&br_link_ops);