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 <net/switchdev.h>
20 #include <uapi/linux/if_bridge.h>
22 #include "br_private.h"
23 #include "br_private_stp.h"
25 static int br_get_num_vlan_infos(const struct net_port_vlans *pv,
28 u16 vid_range_start = 0, vid_range_end = 0;
29 u16 vid_range_flags = 0;
33 if (filter_mask & RTEXT_FILTER_BRVLAN)
36 if (!(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED))
39 /* Count number of vlan info's
41 pvid = br_get_pvid(pv);
42 for_each_set_bit(vid, pv->vlan_bitmap, VLAN_N_VID) {
45 flags |= BRIDGE_VLAN_INFO_PVID;
47 if (test_bit(vid, pv->untagged_bitmap))
48 flags |= BRIDGE_VLAN_INFO_UNTAGGED;
50 if (vid_range_start == 0) {
52 } else if ((vid - vid_range_end) == 1 &&
53 flags == vid_range_flags) {
57 if ((vid_range_end - vid_range_start) > 0)
63 vid_range_start = vid;
65 vid_range_flags = flags;
68 if (vid_range_start != 0) {
69 if ((vid_range_end - vid_range_start) > 0)
78 static size_t br_get_link_af_size_filtered(const struct net_device *dev,
81 struct net_port_vlans *pv;
85 if (br_port_exists(dev))
86 pv = nbp_get_vlan_info(br_port_get_rcu(dev));
87 else if (dev->priv_flags & IFF_EBRIDGE)
88 pv = br_get_vlan_info((struct net_bridge *)netdev_priv(dev));
92 num_vlan_infos = br_get_num_vlan_infos(pv, filter_mask);
100 /* Each VLAN is returned in bridge_vlan_info along with flags */
101 return num_vlan_infos * nla_total_size(sizeof(struct bridge_vlan_info));
104 static inline size_t br_port_info_size(void)
106 return nla_total_size(1) /* IFLA_BRPORT_STATE */
107 + nla_total_size(2) /* IFLA_BRPORT_PRIORITY */
108 + nla_total_size(4) /* IFLA_BRPORT_COST */
109 + nla_total_size(1) /* IFLA_BRPORT_MODE */
110 + nla_total_size(1) /* IFLA_BRPORT_GUARD */
111 + nla_total_size(1) /* IFLA_BRPORT_PROTECT */
112 + nla_total_size(1) /* IFLA_BRPORT_FAST_LEAVE */
113 + nla_total_size(1) /* IFLA_BRPORT_LEARNING */
114 + nla_total_size(1) /* IFLA_BRPORT_UNICAST_FLOOD */
115 + nla_total_size(1) /* IFLA_BRPORT_PROXYARP */
116 + nla_total_size(1) /* IFLA_BRPORT_PROXYARP_WIFI */
120 static inline size_t br_nlmsg_size(struct net_device *dev, u32 filter_mask)
122 return NLMSG_ALIGN(sizeof(struct ifinfomsg))
123 + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */
124 + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */
125 + nla_total_size(4) /* IFLA_MASTER */
126 + nla_total_size(4) /* IFLA_MTU */
127 + nla_total_size(4) /* IFLA_LINK */
128 + nla_total_size(1) /* IFLA_OPERSTATE */
129 + nla_total_size(br_port_info_size()) /* IFLA_PROTINFO */
130 + nla_total_size(br_get_link_af_size_filtered(dev,
131 filter_mask)); /* IFLA_AF_SPEC */
134 static int br_port_fill_attrs(struct sk_buff *skb,
135 const struct net_bridge_port *p)
137 u8 mode = !!(p->flags & BR_HAIRPIN_MODE);
139 if (nla_put_u8(skb, IFLA_BRPORT_STATE, p->state) ||
140 nla_put_u16(skb, IFLA_BRPORT_PRIORITY, p->priority) ||
141 nla_put_u32(skb, IFLA_BRPORT_COST, p->path_cost) ||
142 nla_put_u8(skb, IFLA_BRPORT_MODE, mode) ||
143 nla_put_u8(skb, IFLA_BRPORT_GUARD, !!(p->flags & BR_BPDU_GUARD)) ||
144 nla_put_u8(skb, IFLA_BRPORT_PROTECT, !!(p->flags & BR_ROOT_BLOCK)) ||
145 nla_put_u8(skb, IFLA_BRPORT_FAST_LEAVE, !!(p->flags & BR_MULTICAST_FAST_LEAVE)) ||
146 nla_put_u8(skb, IFLA_BRPORT_LEARNING, !!(p->flags & BR_LEARNING)) ||
147 nla_put_u8(skb, IFLA_BRPORT_UNICAST_FLOOD, !!(p->flags & BR_FLOOD)) ||
148 nla_put_u8(skb, IFLA_BRPORT_PROXYARP, !!(p->flags & BR_PROXYARP)) ||
149 nla_put_u8(skb, IFLA_BRPORT_PROXYARP_WIFI,
150 !!(p->flags & BR_PROXYARP_WIFI)))
156 static int br_fill_ifvlaninfo_range(struct sk_buff *skb, u16 vid_start,
157 u16 vid_end, u16 flags)
159 struct bridge_vlan_info vinfo;
161 if ((vid_end - vid_start) > 0) {
162 /* add range to skb */
163 vinfo.vid = vid_start;
164 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_BEGIN;
165 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
166 sizeof(vinfo), &vinfo))
167 goto nla_put_failure;
169 vinfo.flags &= ~BRIDGE_VLAN_INFO_RANGE_BEGIN;
172 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_END;
173 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
174 sizeof(vinfo), &vinfo))
175 goto nla_put_failure;
177 vinfo.vid = vid_start;
179 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
180 sizeof(vinfo), &vinfo))
181 goto nla_put_failure;
190 static int br_fill_ifvlaninfo_compressed(struct sk_buff *skb,
191 const struct net_port_vlans *pv)
193 u16 vid_range_start = 0, vid_range_end = 0;
194 u16 vid_range_flags = 0;
195 u16 pvid, vid, flags;
198 /* Pack IFLA_BRIDGE_VLAN_INFO's for every vlan
199 * and mark vlan info with begin and end flags
200 * if vlaninfo represents a range
202 pvid = br_get_pvid(pv);
203 for_each_set_bit(vid, pv->vlan_bitmap, VLAN_N_VID) {
206 flags |= BRIDGE_VLAN_INFO_PVID;
208 if (test_bit(vid, pv->untagged_bitmap))
209 flags |= BRIDGE_VLAN_INFO_UNTAGGED;
211 if (vid_range_start == 0) {
213 } else if ((vid - vid_range_end) == 1 &&
214 flags == vid_range_flags) {
218 err = br_fill_ifvlaninfo_range(skb, vid_range_start,
226 vid_range_start = vid;
228 vid_range_flags = flags;
231 if (vid_range_start != 0) {
232 /* Call it once more to send any left over vlans */
233 err = br_fill_ifvlaninfo_range(skb, vid_range_start,
243 static int br_fill_ifvlaninfo(struct sk_buff *skb,
244 const struct net_port_vlans *pv)
246 struct bridge_vlan_info vinfo;
249 pvid = br_get_pvid(pv);
250 for_each_set_bit(vid, pv->vlan_bitmap, VLAN_N_VID) {
254 vinfo.flags |= BRIDGE_VLAN_INFO_PVID;
256 if (test_bit(vid, pv->untagged_bitmap))
257 vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED;
259 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
260 sizeof(vinfo), &vinfo))
261 goto nla_put_failure;
271 * Create one netlink message for one interface
272 * Contains port and master info as well as carrier and bridge state.
274 static int br_fill_ifinfo(struct sk_buff *skb,
275 const struct net_bridge_port *port,
276 u32 pid, u32 seq, int event, unsigned int flags,
277 u32 filter_mask, const struct net_device *dev)
279 const struct net_bridge *br;
280 struct ifinfomsg *hdr;
281 struct nlmsghdr *nlh;
282 u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN;
287 br = netdev_priv(dev);
289 br_debug(br, "br_fill_info event %d port %s master %s\n",
290 event, dev->name, br->dev->name);
292 nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags);
296 hdr = nlmsg_data(nlh);
297 hdr->ifi_family = AF_BRIDGE;
299 hdr->ifi_type = dev->type;
300 hdr->ifi_index = dev->ifindex;
301 hdr->ifi_flags = dev_get_flags(dev);
304 if (nla_put_string(skb, IFLA_IFNAME, dev->name) ||
305 nla_put_u32(skb, IFLA_MASTER, br->dev->ifindex) ||
306 nla_put_u32(skb, IFLA_MTU, dev->mtu) ||
307 nla_put_u8(skb, IFLA_OPERSTATE, operstate) ||
309 nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) ||
310 (dev->ifindex != dev_get_iflink(dev) &&
311 nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev))))
312 goto nla_put_failure;
314 if (event == RTM_NEWLINK && port) {
316 = nla_nest_start(skb, IFLA_PROTINFO | NLA_F_NESTED);
318 if (nest == NULL || br_port_fill_attrs(skb, port) < 0)
319 goto nla_put_failure;
320 nla_nest_end(skb, nest);
323 /* Check if the VID information is requested */
324 if ((filter_mask & RTEXT_FILTER_BRVLAN) ||
325 (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) {
326 const struct net_port_vlans *pv;
331 pv = nbp_get_vlan_info(port);
333 pv = br_get_vlan_info(br);
335 if (!pv || bitmap_empty(pv->vlan_bitmap, VLAN_N_VID))
338 af = nla_nest_start(skb, IFLA_AF_SPEC);
340 goto nla_put_failure;
342 if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)
343 err = br_fill_ifvlaninfo_compressed(skb, pv);
345 err = br_fill_ifvlaninfo(skb, pv);
347 goto nla_put_failure;
348 nla_nest_end(skb, af);
356 nlmsg_cancel(skb, nlh);
361 * Notify listeners of a change in port information
363 void br_ifinfo_notify(int event, struct net_bridge_port *port)
368 u32 filter = RTEXT_FILTER_BRVLAN_COMPRESSED;
373 net = dev_net(port->dev);
374 br_debug(port->br, "port %u(%s) event %d\n",
375 (unsigned int)port->port_no, port->dev->name, event);
377 skb = nlmsg_new(br_nlmsg_size(port->dev, filter), GFP_ATOMIC);
381 err = br_fill_ifinfo(skb, port, 0, 0, event, 0, filter, port->dev);
383 /* -EMSGSIZE implies BUG in br_nlmsg_size() */
384 WARN_ON(err == -EMSGSIZE);
388 rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC);
391 rtnl_set_sk_err(net, RTNLGRP_LINK, err);
396 * Dump information about all ports, in response to GETLINK
398 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq,
399 struct net_device *dev, u32 filter_mask, int nlflags)
401 struct net_bridge_port *port = br_port_get_rtnl(dev);
403 if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) &&
404 !(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED))
407 return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags,
411 static int br_vlan_info(struct net_bridge *br, struct net_bridge_port *p,
412 int cmd, struct bridge_vlan_info *vinfo)
419 err = nbp_vlan_add(p, vinfo->vid, vinfo->flags);
423 if (vinfo->flags & BRIDGE_VLAN_INFO_MASTER)
424 err = br_vlan_add(p->br, vinfo->vid,
427 err = br_vlan_add(br, vinfo->vid, vinfo->flags);
433 nbp_vlan_delete(p, vinfo->vid);
434 if (vinfo->flags & BRIDGE_VLAN_INFO_MASTER)
435 br_vlan_delete(p->br, vinfo->vid);
437 br_vlan_delete(br, vinfo->vid);
445 static int br_afspec(struct net_bridge *br,
446 struct net_bridge_port *p,
447 struct nlattr *af_spec,
450 struct bridge_vlan_info *vinfo_start = NULL;
451 struct bridge_vlan_info *vinfo = NULL;
456 nla_for_each_nested(attr, af_spec, rem) {
457 if (nla_type(attr) != IFLA_BRIDGE_VLAN_INFO)
459 if (nla_len(attr) != sizeof(struct bridge_vlan_info))
461 vinfo = nla_data(attr);
462 if (vinfo->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) {
470 struct bridge_vlan_info tmp_vinfo;
473 if (!(vinfo->flags & BRIDGE_VLAN_INFO_RANGE_END))
476 if (vinfo->vid <= vinfo_start->vid)
479 memcpy(&tmp_vinfo, vinfo_start,
480 sizeof(struct bridge_vlan_info));
482 for (v = vinfo_start->vid; v <= vinfo->vid; v++) {
484 err = br_vlan_info(br, p, cmd, &tmp_vinfo);
490 err = br_vlan_info(br, p, cmd, vinfo);
499 static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = {
500 [IFLA_BRPORT_STATE] = { .type = NLA_U8 },
501 [IFLA_BRPORT_COST] = { .type = NLA_U32 },
502 [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 },
503 [IFLA_BRPORT_MODE] = { .type = NLA_U8 },
504 [IFLA_BRPORT_GUARD] = { .type = NLA_U8 },
505 [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 },
506 [IFLA_BRPORT_FAST_LEAVE]= { .type = NLA_U8 },
507 [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 },
508 [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 },
509 [IFLA_BRPORT_PROXYARP] = { .type = NLA_U8 },
510 [IFLA_BRPORT_PROXYARP_WIFI] = { .type = NLA_U8 },
513 /* Change the state of the port and notify spanning tree */
514 static int br_set_port_state(struct net_bridge_port *p, u8 state)
516 if (state > BR_STATE_BLOCKING)
519 /* if kernel STP is running, don't allow changes */
520 if (p->br->stp_enabled == BR_KERNEL_STP)
523 /* if device is not up, change is not allowed
524 * if link is not present, only allowable state is disabled
526 if (!netif_running(p->dev) ||
527 (!netif_oper_up(p->dev) && state != BR_STATE_DISABLED))
530 br_set_state(p, state);
532 br_port_state_selection(p->br);
536 /* Set/clear or port flags based on attribute */
537 static void br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[],
538 int attrtype, unsigned long mask)
541 u8 flag = nla_get_u8(tb[attrtype]);
549 /* Process bridge protocol info on port */
550 static int br_setport(struct net_bridge_port *p, struct nlattr *tb[])
553 unsigned long old_flags = p->flags;
555 br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE);
556 br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD);
557 br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE);
558 br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK);
559 br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING);
560 br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD);
561 br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP);
562 br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI);
564 if (tb[IFLA_BRPORT_COST]) {
565 err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST]));
570 if (tb[IFLA_BRPORT_PRIORITY]) {
571 err = br_stp_set_port_priority(p, nla_get_u16(tb[IFLA_BRPORT_PRIORITY]));
576 if (tb[IFLA_BRPORT_STATE]) {
577 err = br_set_port_state(p, nla_get_u8(tb[IFLA_BRPORT_STATE]));
582 br_port_flags_change(p, old_flags ^ p->flags);
586 /* Change state and parameters on port. */
587 int br_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags)
589 struct nlattr *protinfo;
590 struct nlattr *afspec;
591 struct net_bridge_port *p;
592 struct nlattr *tb[IFLA_BRPORT_MAX + 1];
593 int err = 0, ret_offload = 0;
595 protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO);
596 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
597 if (!protinfo && !afspec)
600 p = br_port_get_rtnl(dev);
601 /* We want to accept dev as bridge itself if the AF_SPEC
602 * is set to see if someone is setting vlan info on the bridge
608 if (protinfo->nla_type & NLA_F_NESTED) {
609 err = nla_parse_nested(tb, IFLA_BRPORT_MAX,
610 protinfo, br_port_policy);
614 spin_lock_bh(&p->br->lock);
615 err = br_setport(p, tb);
616 spin_unlock_bh(&p->br->lock);
618 /* Binary compatibility with old RSTP */
619 if (nla_len(protinfo) < sizeof(u8))
622 spin_lock_bh(&p->br->lock);
623 err = br_set_port_state(p, nla_get_u8(protinfo));
624 spin_unlock_bh(&p->br->lock);
631 err = br_afspec((struct net_bridge *)netdev_priv(dev), p,
632 afspec, RTM_SETLINK);
635 if (p && !(flags & BRIDGE_FLAGS_SELF)) {
636 /* set bridge attributes in hardware if supported
638 ret_offload = netdev_switch_port_bridge_setlink(dev, nlh,
640 if (ret_offload && ret_offload != -EOPNOTSUPP)
641 br_warn(p->br, "error setting attrs on port %u(%s)\n",
642 (unsigned int)p->port_no, p->dev->name);
646 br_ifinfo_notify(RTM_NEWLINK, p);
651 /* Delete port information */
652 int br_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags)
654 struct nlattr *afspec;
655 struct net_bridge_port *p;
656 int err = 0, ret_offload = 0;
658 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
662 p = br_port_get_rtnl(dev);
663 /* We want to accept dev as bridge itself as well */
664 if (!p && !(dev->priv_flags & IFF_EBRIDGE))
667 err = br_afspec((struct net_bridge *)netdev_priv(dev), p,
668 afspec, RTM_DELLINK);
670 /* Send RTM_NEWLINK because userspace
671 * expects RTM_NEWLINK for vlan dels
673 br_ifinfo_notify(RTM_NEWLINK, p);
675 if (p && !(flags & BRIDGE_FLAGS_SELF)) {
676 /* del bridge attributes in hardware
678 ret_offload = netdev_switch_port_bridge_dellink(dev, nlh,
680 if (ret_offload && ret_offload != -EOPNOTSUPP)
681 br_warn(p->br, "error deleting attrs on port %u (%s)\n",
682 (unsigned int)p->port_no, p->dev->name);
687 static int br_validate(struct nlattr *tb[], struct nlattr *data[])
689 if (tb[IFLA_ADDRESS]) {
690 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
692 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
693 return -EADDRNOTAVAIL;
699 static int br_dev_newlink(struct net *src_net, struct net_device *dev,
700 struct nlattr *tb[], struct nlattr *data[])
702 struct net_bridge *br = netdev_priv(dev);
704 if (tb[IFLA_ADDRESS]) {
705 spin_lock_bh(&br->lock);
706 br_stp_change_bridge_id(br, nla_data(tb[IFLA_ADDRESS]));
707 spin_unlock_bh(&br->lock);
710 return register_netdevice(dev);
713 static int br_port_slave_changelink(struct net_device *brdev,
714 struct net_device *dev,
716 struct nlattr *data[])
718 struct net_bridge *br = netdev_priv(brdev);
724 spin_lock_bh(&br->lock);
725 ret = br_setport(br_port_get_rtnl(dev), data);
726 spin_unlock_bh(&br->lock);
731 static int br_port_fill_slave_info(struct sk_buff *skb,
732 const struct net_device *brdev,
733 const struct net_device *dev)
735 return br_port_fill_attrs(skb, br_port_get_rtnl(dev));
738 static size_t br_port_get_slave_size(const struct net_device *brdev,
739 const struct net_device *dev)
741 return br_port_info_size();
744 static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = {
745 [IFLA_BR_FORWARD_DELAY] = { .type = NLA_U32 },
746 [IFLA_BR_HELLO_TIME] = { .type = NLA_U32 },
747 [IFLA_BR_MAX_AGE] = { .type = NLA_U32 },
748 [IFLA_BR_AGEING_TIME] = { .type = NLA_U32 },
749 [IFLA_BR_STP_STATE] = { .type = NLA_U32 },
750 [IFLA_BR_PRIORITY] = { .type = NLA_U16 },
753 static int br_changelink(struct net_device *brdev, struct nlattr *tb[],
754 struct nlattr *data[])
756 struct net_bridge *br = netdev_priv(brdev);
762 if (data[IFLA_BR_FORWARD_DELAY]) {
763 err = br_set_forward_delay(br, nla_get_u32(data[IFLA_BR_FORWARD_DELAY]));
768 if (data[IFLA_BR_HELLO_TIME]) {
769 err = br_set_hello_time(br, nla_get_u32(data[IFLA_BR_HELLO_TIME]));
774 if (data[IFLA_BR_MAX_AGE]) {
775 err = br_set_max_age(br, nla_get_u32(data[IFLA_BR_MAX_AGE]));
780 if (data[IFLA_BR_AGEING_TIME]) {
781 u32 ageing_time = nla_get_u32(data[IFLA_BR_AGEING_TIME]);
783 br->ageing_time = clock_t_to_jiffies(ageing_time);
786 if (data[IFLA_BR_STP_STATE]) {
787 u32 stp_enabled = nla_get_u32(data[IFLA_BR_STP_STATE]);
789 br_stp_set_enabled(br, stp_enabled);
792 if (data[IFLA_BR_PRIORITY]) {
793 u32 priority = nla_get_u16(data[IFLA_BR_PRIORITY]);
795 br_stp_set_bridge_priority(br, priority);
801 static size_t br_get_size(const struct net_device *brdev)
803 return nla_total_size(sizeof(u32)) + /* IFLA_BR_FORWARD_DELAY */
804 nla_total_size(sizeof(u32)) + /* IFLA_BR_HELLO_TIME */
805 nla_total_size(sizeof(u32)) + /* IFLA_BR_MAX_AGE */
806 nla_total_size(sizeof(u32)) + /* IFLA_BR_AGEING_TIME */
807 nla_total_size(sizeof(u32)) + /* IFLA_BR_STP_STATE */
808 nla_total_size(sizeof(u16)) + /* IFLA_BR_PRIORITY */
812 static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev)
814 struct net_bridge *br = netdev_priv(brdev);
815 u32 forward_delay = jiffies_to_clock_t(br->forward_delay);
816 u32 hello_time = jiffies_to_clock_t(br->hello_time);
817 u32 age_time = jiffies_to_clock_t(br->max_age);
818 u32 ageing_time = jiffies_to_clock_t(br->ageing_time);
819 u32 stp_enabled = br->stp_enabled;
820 u16 priority = (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1];
822 if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) ||
823 nla_put_u32(skb, IFLA_BR_HELLO_TIME, hello_time) ||
824 nla_put_u32(skb, IFLA_BR_MAX_AGE, age_time) ||
825 nla_put_u32(skb, IFLA_BR_AGEING_TIME, ageing_time) ||
826 nla_put_u32(skb, IFLA_BR_STP_STATE, stp_enabled) ||
827 nla_put_u16(skb, IFLA_BR_PRIORITY, priority))
833 static size_t br_get_link_af_size(const struct net_device *dev)
835 struct net_port_vlans *pv;
837 if (br_port_exists(dev))
838 pv = nbp_get_vlan_info(br_port_get_rtnl(dev));
839 else if (dev->priv_flags & IFF_EBRIDGE)
840 pv = br_get_vlan_info((struct net_bridge *)netdev_priv(dev));
847 /* Each VLAN is returned in bridge_vlan_info along with flags */
848 return pv->num_vlans * nla_total_size(sizeof(struct bridge_vlan_info));
851 static struct rtnl_af_ops br_af_ops __read_mostly = {
853 .get_link_af_size = br_get_link_af_size,
856 struct rtnl_link_ops br_link_ops __read_mostly = {
858 .priv_size = sizeof(struct net_bridge),
859 .setup = br_dev_setup,
860 .maxtype = IFLA_BRPORT_MAX,
862 .validate = br_validate,
863 .newlink = br_dev_newlink,
864 .changelink = br_changelink,
865 .dellink = br_dev_delete,
866 .get_size = br_get_size,
867 .fill_info = br_fill_info,
869 .slave_maxtype = IFLA_BRPORT_MAX,
870 .slave_policy = br_port_policy,
871 .slave_changelink = br_port_slave_changelink,
872 .get_slave_size = br_port_get_slave_size,
873 .fill_slave_info = br_port_fill_slave_info,
876 int __init br_netlink_init(void)
881 rtnl_af_register(&br_af_ops);
883 err = rtnl_link_register(&br_link_ops);
890 rtnl_af_unregister(&br_af_ops);
895 void br_netlink_fini(void)
898 rtnl_af_unregister(&br_af_ops);
899 rtnl_link_unregister(&br_link_ops);