2 * Bridge netlink control interface
5 * Stephen Hemminger <shemminger@osdl.org>
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version
10 * 2 of the License, or (at your option) any later version.
13 #include <linux/kernel.h>
14 #include <linux/slab.h>
15 #include <linux/etherdevice.h>
16 #include <net/rtnetlink.h>
17 #include <net/net_namespace.h>
19 #include <uapi/linux/if_bridge.h>
21 #include "br_private.h"
22 #include "br_private_stp.h"
24 static int __get_num_vlan_infos(struct net_bridge_vlan_group *vg,
27 struct net_bridge_vlan *v;
28 u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0;
32 if (!(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED))
35 pvid = br_get_pvid(vg);
36 /* Count number of vlan infos */
37 list_for_each_entry(v, &vg->vlan_list, vlist) {
39 /* only a context, bridge vlan not activated */
40 if (!br_vlan_should_use(v))
43 flags |= BRIDGE_VLAN_INFO_PVID;
45 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
46 flags |= BRIDGE_VLAN_INFO_UNTAGGED;
48 if (vid_range_start == 0) {
50 } else if ((v->vid - vid_range_end) == 1 &&
51 flags == vid_range_flags) {
52 vid_range_end = v->vid;
55 if ((vid_range_end - vid_range_start) > 0)
61 vid_range_start = v->vid;
62 vid_range_end = v->vid;
63 vid_range_flags = flags;
66 if (vid_range_start != 0) {
67 if ((vid_range_end - vid_range_start) > 0)
76 static int br_get_num_vlan_infos(struct net_bridge_vlan_group *vg,
82 if (filter_mask & RTEXT_FILTER_BRVLAN)
85 return __get_num_vlan_infos(vg, filter_mask);
88 static size_t br_get_link_af_size_filtered(const struct net_device *dev,
91 struct net_bridge_vlan_group *vg = NULL;
92 struct net_bridge_port *p;
93 struct net_bridge *br;
97 if (br_port_exists(dev)) {
98 p = br_port_get_rcu(dev);
99 vg = nbp_vlan_group(p);
100 } else if (dev->priv_flags & IFF_EBRIDGE) {
101 br = netdev_priv(dev);
102 vg = br_vlan_group(br);
104 num_vlan_infos = br_get_num_vlan_infos(vg, filter_mask);
107 /* Each VLAN is returned in bridge_vlan_info along with flags */
108 return num_vlan_infos * nla_total_size(sizeof(struct bridge_vlan_info));
111 static inline size_t br_port_info_size(void)
113 return nla_total_size(1) /* IFLA_BRPORT_STATE */
114 + nla_total_size(2) /* IFLA_BRPORT_PRIORITY */
115 + nla_total_size(4) /* IFLA_BRPORT_COST */
116 + nla_total_size(1) /* IFLA_BRPORT_MODE */
117 + nla_total_size(1) /* IFLA_BRPORT_GUARD */
118 + nla_total_size(1) /* IFLA_BRPORT_PROTECT */
119 + nla_total_size(1) /* IFLA_BRPORT_FAST_LEAVE */
120 + nla_total_size(1) /* IFLA_BRPORT_LEARNING */
121 + nla_total_size(1) /* IFLA_BRPORT_UNICAST_FLOOD */
122 + nla_total_size(1) /* IFLA_BRPORT_PROXYARP */
123 + nla_total_size(1) /* IFLA_BRPORT_PROXYARP_WIFI */
127 static inline size_t br_nlmsg_size(struct net_device *dev, u32 filter_mask)
129 return NLMSG_ALIGN(sizeof(struct ifinfomsg))
130 + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */
131 + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */
132 + nla_total_size(4) /* IFLA_MASTER */
133 + nla_total_size(4) /* IFLA_MTU */
134 + nla_total_size(4) /* IFLA_LINK */
135 + nla_total_size(1) /* IFLA_OPERSTATE */
136 + nla_total_size(br_port_info_size()) /* IFLA_PROTINFO */
137 + nla_total_size(br_get_link_af_size_filtered(dev,
138 filter_mask)); /* IFLA_AF_SPEC */
141 static int br_port_fill_attrs(struct sk_buff *skb,
142 const struct net_bridge_port *p)
144 u8 mode = !!(p->flags & BR_HAIRPIN_MODE);
146 if (nla_put_u8(skb, IFLA_BRPORT_STATE, p->state) ||
147 nla_put_u16(skb, IFLA_BRPORT_PRIORITY, p->priority) ||
148 nla_put_u32(skb, IFLA_BRPORT_COST, p->path_cost) ||
149 nla_put_u8(skb, IFLA_BRPORT_MODE, mode) ||
150 nla_put_u8(skb, IFLA_BRPORT_GUARD, !!(p->flags & BR_BPDU_GUARD)) ||
151 nla_put_u8(skb, IFLA_BRPORT_PROTECT, !!(p->flags & BR_ROOT_BLOCK)) ||
152 nla_put_u8(skb, IFLA_BRPORT_FAST_LEAVE, !!(p->flags & BR_MULTICAST_FAST_LEAVE)) ||
153 nla_put_u8(skb, IFLA_BRPORT_LEARNING, !!(p->flags & BR_LEARNING)) ||
154 nla_put_u8(skb, IFLA_BRPORT_UNICAST_FLOOD, !!(p->flags & BR_FLOOD)) ||
155 nla_put_u8(skb, IFLA_BRPORT_PROXYARP, !!(p->flags & BR_PROXYARP)) ||
156 nla_put_u8(skb, IFLA_BRPORT_PROXYARP_WIFI,
157 !!(p->flags & BR_PROXYARP_WIFI)))
163 static int br_fill_ifvlaninfo_range(struct sk_buff *skb, u16 vid_start,
164 u16 vid_end, u16 flags)
166 struct bridge_vlan_info vinfo;
168 if ((vid_end - vid_start) > 0) {
169 /* add range to skb */
170 vinfo.vid = vid_start;
171 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_BEGIN;
172 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
173 sizeof(vinfo), &vinfo))
174 goto nla_put_failure;
177 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_END;
178 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
179 sizeof(vinfo), &vinfo))
180 goto nla_put_failure;
182 vinfo.vid = vid_start;
184 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
185 sizeof(vinfo), &vinfo))
186 goto nla_put_failure;
195 static int br_fill_ifvlaninfo_compressed(struct sk_buff *skb,
196 struct net_bridge_vlan_group *vg)
198 struct net_bridge_vlan *v;
199 u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0;
203 /* Pack IFLA_BRIDGE_VLAN_INFO's for every vlan
204 * and mark vlan info with begin and end flags
205 * if vlaninfo represents a range
207 pvid = br_get_pvid(vg);
208 list_for_each_entry(v, &vg->vlan_list, vlist) {
210 if (!br_vlan_should_use(v))
213 flags |= BRIDGE_VLAN_INFO_PVID;
215 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
216 flags |= BRIDGE_VLAN_INFO_UNTAGGED;
218 if (vid_range_start == 0) {
220 } else if ((v->vid - vid_range_end) == 1 &&
221 flags == vid_range_flags) {
222 vid_range_end = v->vid;
225 err = br_fill_ifvlaninfo_range(skb, vid_range_start,
233 vid_range_start = v->vid;
234 vid_range_end = v->vid;
235 vid_range_flags = flags;
238 if (vid_range_start != 0) {
239 /* Call it once more to send any left over vlans */
240 err = br_fill_ifvlaninfo_range(skb, vid_range_start,
250 static int br_fill_ifvlaninfo(struct sk_buff *skb,
251 struct net_bridge_vlan_group *vg)
253 struct bridge_vlan_info vinfo;
254 struct net_bridge_vlan *v;
257 pvid = br_get_pvid(vg);
258 list_for_each_entry(v, &vg->vlan_list, vlist) {
259 if (!br_vlan_should_use(v))
265 vinfo.flags |= BRIDGE_VLAN_INFO_PVID;
267 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
268 vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED;
270 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
271 sizeof(vinfo), &vinfo))
272 goto nla_put_failure;
282 * Create one netlink message for one interface
283 * Contains port and master info as well as carrier and bridge state.
285 static int br_fill_ifinfo(struct sk_buff *skb,
286 struct net_bridge_port *port,
287 u32 pid, u32 seq, int event, unsigned int flags,
288 u32 filter_mask, const struct net_device *dev)
290 struct net_bridge *br;
291 struct ifinfomsg *hdr;
292 struct nlmsghdr *nlh;
293 u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN;
298 br = netdev_priv(dev);
300 br_debug(br, "br_fill_info event %d port %s master %s\n",
301 event, dev->name, br->dev->name);
303 nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags);
307 hdr = nlmsg_data(nlh);
308 hdr->ifi_family = AF_BRIDGE;
310 hdr->ifi_type = dev->type;
311 hdr->ifi_index = dev->ifindex;
312 hdr->ifi_flags = dev_get_flags(dev);
315 if (nla_put_string(skb, IFLA_IFNAME, dev->name) ||
316 nla_put_u32(skb, IFLA_MASTER, br->dev->ifindex) ||
317 nla_put_u32(skb, IFLA_MTU, dev->mtu) ||
318 nla_put_u8(skb, IFLA_OPERSTATE, operstate) ||
320 nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) ||
321 (dev->ifindex != dev_get_iflink(dev) &&
322 nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev))))
323 goto nla_put_failure;
325 if (event == RTM_NEWLINK && port) {
327 = nla_nest_start(skb, IFLA_PROTINFO | NLA_F_NESTED);
329 if (nest == NULL || br_port_fill_attrs(skb, port) < 0)
330 goto nla_put_failure;
331 nla_nest_end(skb, nest);
334 /* Check if the VID information is requested */
335 if ((filter_mask & RTEXT_FILTER_BRVLAN) ||
336 (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) {
337 struct net_bridge_vlan_group *vg;
342 vg = nbp_vlan_group(port);
344 vg = br_vlan_group(br);
346 if (!vg || !vg->num_vlans)
349 af = nla_nest_start(skb, IFLA_AF_SPEC);
351 goto nla_put_failure;
353 if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)
354 err = br_fill_ifvlaninfo_compressed(skb, vg);
356 err = br_fill_ifvlaninfo(skb, vg);
358 goto nla_put_failure;
359 nla_nest_end(skb, af);
367 nlmsg_cancel(skb, nlh);
372 * Notify listeners of a change in port information
374 void br_ifinfo_notify(int event, struct net_bridge_port *port)
379 u32 filter = RTEXT_FILTER_BRVLAN_COMPRESSED;
384 net = dev_net(port->dev);
385 br_debug(port->br, "port %u(%s) event %d\n",
386 (unsigned int)port->port_no, port->dev->name, event);
388 skb = nlmsg_new(br_nlmsg_size(port->dev, filter), GFP_ATOMIC);
392 err = br_fill_ifinfo(skb, port, 0, 0, event, 0, filter, port->dev);
394 /* -EMSGSIZE implies BUG in br_nlmsg_size() */
395 WARN_ON(err == -EMSGSIZE);
399 rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC);
402 rtnl_set_sk_err(net, RTNLGRP_LINK, err);
407 * Dump information about all ports, in response to GETLINK
409 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq,
410 struct net_device *dev, u32 filter_mask, int nlflags)
412 struct net_bridge_port *port = br_port_get_rtnl(dev);
414 if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) &&
415 !(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED))
418 return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags,
422 static int br_vlan_info(struct net_bridge *br, struct net_bridge_port *p,
423 int cmd, struct bridge_vlan_info *vinfo)
430 /* if the MASTER flag is set this will act on the global
431 * per-VLAN entry as well
433 err = nbp_vlan_add(p, vinfo->vid, vinfo->flags);
437 vinfo->flags |= BRIDGE_VLAN_INFO_BRENTRY;
438 err = br_vlan_add(br, vinfo->vid, vinfo->flags);
444 nbp_vlan_delete(p, vinfo->vid);
445 if (vinfo->flags & BRIDGE_VLAN_INFO_MASTER)
446 br_vlan_delete(p->br, vinfo->vid);
448 br_vlan_delete(br, vinfo->vid);
456 static int br_afspec(struct net_bridge *br,
457 struct net_bridge_port *p,
458 struct nlattr *af_spec,
461 struct bridge_vlan_info *vinfo_start = NULL;
462 struct bridge_vlan_info *vinfo = NULL;
467 nla_for_each_nested(attr, af_spec, rem) {
468 if (nla_type(attr) != IFLA_BRIDGE_VLAN_INFO)
470 if (nla_len(attr) != sizeof(struct bridge_vlan_info))
472 vinfo = nla_data(attr);
473 if (!vinfo->vid || vinfo->vid >= VLAN_VID_MASK)
475 if (vinfo->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) {
483 struct bridge_vlan_info tmp_vinfo;
486 if (!(vinfo->flags & BRIDGE_VLAN_INFO_RANGE_END))
489 if (vinfo->vid <= vinfo_start->vid)
492 memcpy(&tmp_vinfo, vinfo_start,
493 sizeof(struct bridge_vlan_info));
495 for (v = vinfo_start->vid; v <= vinfo->vid; v++) {
497 err = br_vlan_info(br, p, cmd, &tmp_vinfo);
503 err = br_vlan_info(br, p, cmd, vinfo);
512 static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = {
513 [IFLA_BRPORT_STATE] = { .type = NLA_U8 },
514 [IFLA_BRPORT_COST] = { .type = NLA_U32 },
515 [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 },
516 [IFLA_BRPORT_MODE] = { .type = NLA_U8 },
517 [IFLA_BRPORT_GUARD] = { .type = NLA_U8 },
518 [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 },
519 [IFLA_BRPORT_FAST_LEAVE]= { .type = NLA_U8 },
520 [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 },
521 [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 },
522 [IFLA_BRPORT_PROXYARP] = { .type = NLA_U8 },
523 [IFLA_BRPORT_PROXYARP_WIFI] = { .type = NLA_U8 },
526 /* Change the state of the port and notify spanning tree */
527 static int br_set_port_state(struct net_bridge_port *p, u8 state)
529 if (state > BR_STATE_BLOCKING)
532 /* if kernel STP is running, don't allow changes */
533 if (p->br->stp_enabled == BR_KERNEL_STP)
536 /* if device is not up, change is not allowed
537 * if link is not present, only allowable state is disabled
539 if (!netif_running(p->dev) ||
540 (!netif_oper_up(p->dev) && state != BR_STATE_DISABLED))
543 br_set_state(p, state);
545 br_port_state_selection(p->br);
549 /* Set/clear or port flags based on attribute */
550 static void br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[],
551 int attrtype, unsigned long mask)
554 u8 flag = nla_get_u8(tb[attrtype]);
562 /* Process bridge protocol info on port */
563 static int br_setport(struct net_bridge_port *p, struct nlattr *tb[])
566 unsigned long old_flags = p->flags;
568 br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE);
569 br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD);
570 br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE);
571 br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK);
572 br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING);
573 br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD);
574 br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP);
575 br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI);
577 if (tb[IFLA_BRPORT_COST]) {
578 err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST]));
583 if (tb[IFLA_BRPORT_PRIORITY]) {
584 err = br_stp_set_port_priority(p, nla_get_u16(tb[IFLA_BRPORT_PRIORITY]));
589 if (tb[IFLA_BRPORT_STATE]) {
590 err = br_set_port_state(p, nla_get_u8(tb[IFLA_BRPORT_STATE]));
595 br_port_flags_change(p, old_flags ^ p->flags);
599 /* Change state and parameters on port. */
600 int br_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags)
602 struct nlattr *protinfo;
603 struct nlattr *afspec;
604 struct net_bridge_port *p;
605 struct nlattr *tb[IFLA_BRPORT_MAX + 1];
608 protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO);
609 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
610 if (!protinfo && !afspec)
613 p = br_port_get_rtnl(dev);
614 /* We want to accept dev as bridge itself if the AF_SPEC
615 * is set to see if someone is setting vlan info on the bridge
621 if (protinfo->nla_type & NLA_F_NESTED) {
622 err = nla_parse_nested(tb, IFLA_BRPORT_MAX,
623 protinfo, br_port_policy);
627 spin_lock_bh(&p->br->lock);
628 err = br_setport(p, tb);
629 spin_unlock_bh(&p->br->lock);
631 /* Binary compatibility with old RSTP */
632 if (nla_len(protinfo) < sizeof(u8))
635 spin_lock_bh(&p->br->lock);
636 err = br_set_port_state(p, nla_get_u8(protinfo));
637 spin_unlock_bh(&p->br->lock);
644 err = br_afspec((struct net_bridge *)netdev_priv(dev), p,
645 afspec, RTM_SETLINK);
649 br_ifinfo_notify(RTM_NEWLINK, p);
654 /* Delete port information */
655 int br_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags)
657 struct nlattr *afspec;
658 struct net_bridge_port *p;
661 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
665 p = br_port_get_rtnl(dev);
666 /* We want to accept dev as bridge itself as well */
667 if (!p && !(dev->priv_flags & IFF_EBRIDGE))
670 err = br_afspec((struct net_bridge *)netdev_priv(dev), p,
671 afspec, RTM_DELLINK);
673 /* Send RTM_NEWLINK because userspace
674 * expects RTM_NEWLINK for vlan dels
676 br_ifinfo_notify(RTM_NEWLINK, p);
680 static int br_validate(struct nlattr *tb[], struct nlattr *data[])
682 if (tb[IFLA_ADDRESS]) {
683 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
685 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
686 return -EADDRNOTAVAIL;
692 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
693 if (data[IFLA_BR_VLAN_PROTOCOL]) {
694 switch (nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL])) {
695 case htons(ETH_P_8021Q):
696 case htons(ETH_P_8021AD):
699 return -EPROTONOSUPPORT;
707 static int br_dev_newlink(struct net *src_net, struct net_device *dev,
708 struct nlattr *tb[], struct nlattr *data[])
710 struct net_bridge *br = netdev_priv(dev);
712 if (tb[IFLA_ADDRESS]) {
713 spin_lock_bh(&br->lock);
714 br_stp_change_bridge_id(br, nla_data(tb[IFLA_ADDRESS]));
715 spin_unlock_bh(&br->lock);
718 return register_netdevice(dev);
721 static int br_port_slave_changelink(struct net_device *brdev,
722 struct net_device *dev,
724 struct nlattr *data[])
726 struct net_bridge *br = netdev_priv(brdev);
732 spin_lock_bh(&br->lock);
733 ret = br_setport(br_port_get_rtnl(dev), data);
734 spin_unlock_bh(&br->lock);
739 static int br_port_fill_slave_info(struct sk_buff *skb,
740 const struct net_device *brdev,
741 const struct net_device *dev)
743 return br_port_fill_attrs(skb, br_port_get_rtnl(dev));
746 static size_t br_port_get_slave_size(const struct net_device *brdev,
747 const struct net_device *dev)
749 return br_port_info_size();
752 static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = {
753 [IFLA_BR_FORWARD_DELAY] = { .type = NLA_U32 },
754 [IFLA_BR_HELLO_TIME] = { .type = NLA_U32 },
755 [IFLA_BR_MAX_AGE] = { .type = NLA_U32 },
756 [IFLA_BR_AGEING_TIME] = { .type = NLA_U32 },
757 [IFLA_BR_STP_STATE] = { .type = NLA_U32 },
758 [IFLA_BR_PRIORITY] = { .type = NLA_U16 },
759 [IFLA_BR_VLAN_FILTERING] = { .type = NLA_U8 },
760 [IFLA_BR_VLAN_PROTOCOL] = { .type = NLA_U16 },
763 static int br_changelink(struct net_device *brdev, struct nlattr *tb[],
764 struct nlattr *data[])
766 struct net_bridge *br = netdev_priv(brdev);
772 if (data[IFLA_BR_FORWARD_DELAY]) {
773 err = br_set_forward_delay(br, nla_get_u32(data[IFLA_BR_FORWARD_DELAY]));
778 if (data[IFLA_BR_HELLO_TIME]) {
779 err = br_set_hello_time(br, nla_get_u32(data[IFLA_BR_HELLO_TIME]));
784 if (data[IFLA_BR_MAX_AGE]) {
785 err = br_set_max_age(br, nla_get_u32(data[IFLA_BR_MAX_AGE]));
790 if (data[IFLA_BR_AGEING_TIME]) {
791 u32 ageing_time = nla_get_u32(data[IFLA_BR_AGEING_TIME]);
793 br->ageing_time = clock_t_to_jiffies(ageing_time);
796 if (data[IFLA_BR_STP_STATE]) {
797 u32 stp_enabled = nla_get_u32(data[IFLA_BR_STP_STATE]);
799 br_stp_set_enabled(br, stp_enabled);
802 if (data[IFLA_BR_PRIORITY]) {
803 u32 priority = nla_get_u16(data[IFLA_BR_PRIORITY]);
805 br_stp_set_bridge_priority(br, priority);
808 if (data[IFLA_BR_VLAN_FILTERING]) {
809 u8 vlan_filter = nla_get_u8(data[IFLA_BR_VLAN_FILTERING]);
811 err = __br_vlan_filter_toggle(br, vlan_filter);
816 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
817 if (data[IFLA_BR_VLAN_PROTOCOL]) {
818 __be16 vlan_proto = nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL]);
820 err = __br_vlan_set_proto(br, vlan_proto);
829 static size_t br_get_size(const struct net_device *brdev)
831 return nla_total_size(sizeof(u32)) + /* IFLA_BR_FORWARD_DELAY */
832 nla_total_size(sizeof(u32)) + /* IFLA_BR_HELLO_TIME */
833 nla_total_size(sizeof(u32)) + /* IFLA_BR_MAX_AGE */
834 nla_total_size(sizeof(u32)) + /* IFLA_BR_AGEING_TIME */
835 nla_total_size(sizeof(u32)) + /* IFLA_BR_STP_STATE */
836 nla_total_size(sizeof(u16)) + /* IFLA_BR_PRIORITY */
837 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_FILTERING */
838 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
839 nla_total_size(sizeof(__be16)) + /* IFLA_BR_VLAN_PROTOCOL */
844 static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev)
846 struct net_bridge *br = netdev_priv(brdev);
847 u32 forward_delay = jiffies_to_clock_t(br->forward_delay);
848 u32 hello_time = jiffies_to_clock_t(br->hello_time);
849 u32 age_time = jiffies_to_clock_t(br->max_age);
850 u32 ageing_time = jiffies_to_clock_t(br->ageing_time);
851 u32 stp_enabled = br->stp_enabled;
852 u16 priority = (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1];
853 u8 vlan_enabled = br_vlan_enabled(br);
855 if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) ||
856 nla_put_u32(skb, IFLA_BR_HELLO_TIME, hello_time) ||
857 nla_put_u32(skb, IFLA_BR_MAX_AGE, age_time) ||
858 nla_put_u32(skb, IFLA_BR_AGEING_TIME, ageing_time) ||
859 nla_put_u32(skb, IFLA_BR_STP_STATE, stp_enabled) ||
860 nla_put_u16(skb, IFLA_BR_PRIORITY, priority) ||
861 nla_put_u8(skb, IFLA_BR_VLAN_FILTERING, vlan_enabled))
864 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
865 if (nla_put_be16(skb, IFLA_BR_VLAN_PROTOCOL, br->vlan_proto))
872 static size_t br_get_link_af_size(const struct net_device *dev)
874 struct net_bridge_port *p;
875 struct net_bridge *br;
878 if (br_port_exists(dev)) {
879 p = br_port_get_rtnl(dev);
880 num_vlans = br_get_num_vlan_infos(nbp_vlan_group(p),
881 RTEXT_FILTER_BRVLAN);
882 } else if (dev->priv_flags & IFF_EBRIDGE) {
883 br = netdev_priv(dev);
884 num_vlans = br_get_num_vlan_infos(br_vlan_group(br),
885 RTEXT_FILTER_BRVLAN);
888 /* Each VLAN is returned in bridge_vlan_info along with flags */
889 return num_vlans * nla_total_size(sizeof(struct bridge_vlan_info));
892 static struct rtnl_af_ops br_af_ops __read_mostly = {
894 .get_link_af_size = br_get_link_af_size,
897 struct rtnl_link_ops br_link_ops __read_mostly = {
899 .priv_size = sizeof(struct net_bridge),
900 .setup = br_dev_setup,
901 .maxtype = IFLA_BR_MAX,
903 .validate = br_validate,
904 .newlink = br_dev_newlink,
905 .changelink = br_changelink,
906 .dellink = br_dev_delete,
907 .get_size = br_get_size,
908 .fill_info = br_fill_info,
910 .slave_maxtype = IFLA_BRPORT_MAX,
911 .slave_policy = br_port_policy,
912 .slave_changelink = br_port_slave_changelink,
913 .get_slave_size = br_port_get_slave_size,
914 .fill_slave_info = br_port_fill_slave_info,
917 int __init br_netlink_init(void)
922 rtnl_af_register(&br_af_ops);
924 err = rtnl_link_register(&br_link_ops);
931 rtnl_af_unregister(&br_af_ops);
936 void br_netlink_fini(void)
939 rtnl_af_unregister(&br_af_ops);
940 rtnl_link_unregister(&br_link_ops);