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net: bridge: propagate extack through store_bridge_parm
[linux-block.git] / net / bridge / br_netlink.c
CommitLineData
2874c5fd 1// SPDX-License-Identifier: GPL-2.0-or-later
11dc1f36
SH		 2/*
3 * Bridge netlink control interface
4 *
5 * Authors:
6 * Stephen Hemminger <shemminger@osdl.org>
11dc1f36
SH		 7 */
8
9#include <linux/kernel.h>
5a0e3ad6 10#include <linux/slab.h>
bb900b27 11#include <linux/etherdevice.h>
32fe21c0 12#include <net/rtnetlink.h>
881d966b 13#include <net/net_namespace.h>
b854272b 14#include <net/sock.h>
407af329 15#include <uapi/linux/if_bridge.h>
bb900b27 16
11dc1f36 17#include "br_private.h"
b03b6dd5 18#include "br_private_stp.h"
5e312fc0 19#include "br_private_cfm.h"
efa5356b 20#include "br_private_tunnel.h"
2dba407f 21#include "br_private_mcast_eht.h"
11dc1f36 22
2594e906 23static int __get_num_vlan_infos(struct net_bridge_vlan_group *vg,
77751ee8 24 u32 filter_mask)
fed0a159 25{
2594e906
NA		 26 struct net_bridge_vlan *v;
27 u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0;
77751ee8 28 u16 flags, pvid;
fed0a159
RP		 29 int num_vlans = 0;
30
fed0a159
RP		 31 if (!(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED))
32 return 0;
33
77751ee8 34 pvid = br_get_pvid(vg);
2594e906 35 /* Count number of vlan infos */
586c2b57 36 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
fed0a159 37 flags = 0;
2594e906
NA		 38 /* only a context, bridge vlan not activated */
39 if (!br_vlan_should_use(v))
40 continue;
41 if (v->vid == pvid)
fed0a159
RP		 42 flags |= BRIDGE_VLAN_INFO_PVID;
43
2594e906 44 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
fed0a159
RP		 45 flags |= BRIDGE_VLAN_INFO_UNTAGGED;
46
47 if (vid_range_start == 0) {
48 goto initvars;
2594e906 49 } else if ((v->vid - vid_range_end) == 1 &&
fed0a159 50 flags == vid_range_flags) {
2594e906 51 vid_range_end = v->vid;
fed0a159
RP		 52 continue;
53 } else {
54 if ((vid_range_end - vid_range_start) > 0)
55 num_vlans += 2;
56 else
57 num_vlans += 1;
58 }
59initvars:
2594e906
NA		 60 vid_range_start = v->vid;
61 vid_range_end = v->vid;
fed0a159
RP		 62 vid_range_flags = flags;
63 }
64
65 if (vid_range_start != 0) {
66 if ((vid_range_end - vid_range_start) > 0)
67 num_vlans += 2;
68 else
69 num_vlans += 1;
70 }
71
72 return num_vlans;
73}
74
2594e906 75static int br_get_num_vlan_infos(struct net_bridge_vlan_group *vg,
77751ee8 76 u32 filter_mask)
2594e906 77{
586c2b57
NA		 78 int num_vlans;
79
2594e906
NA		 80 if (!vg)
81 return 0;
82
83 if (filter_mask & RTEXT_FILTER_BRVLAN)
84 return vg->num_vlans;
85
586c2b57
NA		 86 rcu_read_lock();
87 num_vlans = __get_num_vlan_infos(vg, filter_mask);
88 rcu_read_unlock();
89
90 return num_vlans;
2594e906
NA		 91}
92
fed0a159
RP		 93static size_t br_get_link_af_size_filtered(const struct net_device *dev,
94 u32 filter_mask)
b7853d73 95{
2594e906 96 struct net_bridge_vlan_group *vg = NULL;
efa5356b 97 struct net_bridge_port *p = NULL;
b6d0425b
HB		 98 struct net_bridge *br = NULL;
99 u32 num_cfm_peer_mep_infos;
100 u32 num_cfm_mep_infos;
efa5356b 101 size_t vinfo_sz = 0;
b6d0425b 102 int num_vlan_infos;
b7853d73 103
2f56f6be 104 rcu_read_lock();
35f861e3 105 if (netif_is_bridge_port(dev)) {
2594e906 106 p = br_port_get_rcu(dev);
907b1e6e 107 vg = nbp_vlan_group_rcu(p);
2594e906
NA		 108 } else if (dev->priv_flags & IFF_EBRIDGE) {
109 br = netdev_priv(dev);
907b1e6e 110 vg = br_vlan_group_rcu(br);
2594e906 111 }
77751ee8 112 num_vlan_infos = br_get_num_vlan_infos(vg, filter_mask);
2f56f6be 113 rcu_read_unlock();
b7853d73 114
efa5356b
RP		 115 if (p && (p->flags & BR_VLAN_TUNNEL))
116 vinfo_sz += br_get_vlan_tunnel_info_size(vg);
117
b7853d73 118 /* Each VLAN is returned in bridge_vlan_info along with flags */
efa5356b
RP		 119 vinfo_sz += num_vlan_infos * nla_total_size(sizeof(struct bridge_vlan_info));
120
b6d0425b
HB		 121 if (!(filter_mask & RTEXT_FILTER_CFM_STATUS))
122 return vinfo_sz;
123
124 if (!br)
125 return vinfo_sz;
126
127 /* CFM status info must be added */
128 br_cfm_mep_count(br, &num_cfm_mep_infos);
129 br_cfm_peer_mep_count(br, &num_cfm_peer_mep_infos);
130
131 vinfo_sz += nla_total_size(0); /* IFLA_BRIDGE_CFM */
132 /* For each status struct the MEP instance (u32) is added */
133 /* MEP instance (u32) + br_cfm_mep_status */
134 vinfo_sz += num_cfm_mep_infos *
135 /*IFLA_BRIDGE_CFM_MEP_STATUS_INSTANCE */
136 (nla_total_size(sizeof(u32))
137 /* IFLA_BRIDGE_CFM_MEP_STATUS_OPCODE_UNEXP_SEEN */
138 + nla_total_size(sizeof(u32))
139 /* IFLA_BRIDGE_CFM_MEP_STATUS_VERSION_UNEXP_SEEN */
140 + nla_total_size(sizeof(u32))
141 /* IFLA_BRIDGE_CFM_MEP_STATUS_RX_LEVEL_LOW_SEEN */
142 + nla_total_size(sizeof(u32)));
143 /* MEP instance (u32) + br_cfm_cc_peer_status */
144 vinfo_sz += num_cfm_peer_mep_infos *
145 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_INSTANCE */
146 (nla_total_size(sizeof(u32))
147 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_PEER_MEPID */
148 + nla_total_size(sizeof(u32))
149 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_CCM_DEFECT */
150 + nla_total_size(sizeof(u32))
151 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_RDI */
152 + nla_total_size(sizeof(u32))
153 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_PORT_TLV_VALUE */
154 + nla_total_size(sizeof(u8))
155 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_IF_TLV_VALUE */
156 + nla_total_size(sizeof(u8))
157 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_SEEN */
158 + nla_total_size(sizeof(u32))
159 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_TLV_SEEN */
160 + nla_total_size(sizeof(u32))
161 /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_SEQ_UNEXP_SEEN */
162 + nla_total_size(sizeof(u32)));
163
efa5356b 164 return vinfo_sz;
b7853d73
RP		 165}
166
25c71c75 167static inline size_t br_port_info_size(void)
168{
169 return nla_total_size(1) /* IFLA_BRPORT_STATE */
170 + nla_total_size(2) /* IFLA_BRPORT_PRIORITY */
171 + nla_total_size(4) /* IFLA_BRPORT_COST */
172 + nla_total_size(1) /* IFLA_BRPORT_MODE */
a2e01a65 173 + nla_total_size(1) /* IFLA_BRPORT_GUARD */
1007dd1a 174 + nla_total_size(1) /* IFLA_BRPORT_PROTECT */
3da889b6 175 + nla_total_size(1) /* IFLA_BRPORT_FAST_LEAVE */
6db6f0ea 176 + nla_total_size(1) /* IFLA_BRPORT_MCAST_TO_UCAST */
9ba18891 177 + nla_total_size(1) /* IFLA_BRPORT_LEARNING */
867a5943 178 + nla_total_size(1) /* IFLA_BRPORT_UNICAST_FLOOD */
9051247d
TK		 179 + nla_total_size(1) /* IFLA_BRPORT_MCAST_FLOOD */
180 + nla_total_size(1) /* IFLA_BRPORT_BCAST_FLOOD */
355b9f9d 181 + nla_total_size(1) /* IFLA_BRPORT_PROXYARP */
786c2077 182 + nla_total_size(1) /* IFLA_BRPORT_PROXYARP_WIFI */
efa5356b 183 + nla_total_size(1) /* IFLA_BRPORT_VLAN_TUNNEL */
821f1b21 184 + nla_total_size(1) /* IFLA_BRPORT_NEIGH_SUPPRESS */
7d850abd 185 + nla_total_size(1) /* IFLA_BRPORT_ISOLATED */
4ebc7660 186 + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_ROOT_ID */
80df9a26 187 + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_BRIDGE_ID */
96f94e7f
NA		 188 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_DESIGNATED_PORT */
189 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_DESIGNATED_COST */
42d452c4
NA		 190 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_ID */
191 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_NO */
e08e838a
NA		 192 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_TOPOLOGY_CHANGE_ACK */
193 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_CONFIG_PENDING */
12a0faa3
ND		 194 + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_MESSAGE_AGE_TIMER */
195 + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_FORWARD_DELAY_TIMER */
196 + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_HOLD_TIMER */
5d6ae479
NA		 197#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
198 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_MULTICAST_ROUTER */
199#endif
5af48b59 200 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_GROUP_FWD_MASK */
3e54442c 201 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_MRP_RING_OPEN */
ffb3adba 202 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_MRP_IN_OPEN */
2dba407f
NA		 203 + nla_total_size(sizeof(u32)) /* IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT */
204 + nla_total_size(sizeof(u32)) /* IFLA_BRPORT_MCAST_EHT_HOSTS_CNT */
25c71c75 205 + 0;
206}
207
fed0a159 208static inline size_t br_nlmsg_size(struct net_device *dev, u32 filter_mask)
339bf98f
TG		 209{
210 return NLMSG_ALIGN(sizeof(struct ifinfomsg))
25c71c75 211 + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */
212 + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */
213 + nla_total_size(4) /* IFLA_MASTER */
214 + nla_total_size(4) /* IFLA_MTU */
215 + nla_total_size(4) /* IFLA_LINK */
216 + nla_total_size(1) /* IFLA_OPERSTATE */
b7853d73 217 + nla_total_size(br_port_info_size()) /* IFLA_PROTINFO */
fed0a159 218 + nla_total_size(br_get_link_af_size_filtered(dev,
2756f68c
NA		 219 filter_mask)) /* IFLA_AF_SPEC */
220 + nla_total_size(4); /* IFLA_BRPORT_BACKUP_PORT */
25c71c75 221}
222
223static int br_port_fill_attrs(struct sk_buff *skb,
224 const struct net_bridge_port *p)
225{
226 u8 mode = !!(p->flags & BR_HAIRPIN_MODE);
2756f68c 227 struct net_bridge_port *backup_p;
61c0a9a8 228 u64 timerval;
25c71c75 229
230 if (nla_put_u8(skb, IFLA_BRPORT_STATE, p->state) ||
231 nla_put_u16(skb, IFLA_BRPORT_PRIORITY, p->priority) ||
232 nla_put_u32(skb, IFLA_BRPORT_COST, p->path_cost) ||
a2e01a65 233 nla_put_u8(skb, IFLA_BRPORT_MODE, mode) ||
1007dd1a 234 nla_put_u8(skb, IFLA_BRPORT_GUARD, !!(p->flags & BR_BPDU_GUARD)) ||
b6cb5ac8
NA		 235 nla_put_u8(skb, IFLA_BRPORT_PROTECT,
236 !!(p->flags & BR_ROOT_BLOCK)) ||
237 nla_put_u8(skb, IFLA_BRPORT_FAST_LEAVE,
238 !!(p->flags & BR_MULTICAST_FAST_LEAVE)) ||
6db6f0ea
FF		 239 nla_put_u8(skb, IFLA_BRPORT_MCAST_TO_UCAST,
240 !!(p->flags & BR_MULTICAST_TO_UNICAST)) ||
867a5943 241 nla_put_u8(skb, IFLA_BRPORT_LEARNING, !!(p->flags & BR_LEARNING)) ||
b6cb5ac8
NA		 242 nla_put_u8(skb, IFLA_BRPORT_UNICAST_FLOOD,
243 !!(p->flags & BR_FLOOD)) ||
244 nla_put_u8(skb, IFLA_BRPORT_MCAST_FLOOD,
245 !!(p->flags & BR_MCAST_FLOOD)) ||
99f906e9
MM		 246 nla_put_u8(skb, IFLA_BRPORT_BCAST_FLOOD,
247 !!(p->flags & BR_BCAST_FLOOD)) ||
842a9ae0
JM		 248 nla_put_u8(skb, IFLA_BRPORT_PROXYARP, !!(p->flags & BR_PROXYARP)) ||
249 nla_put_u8(skb, IFLA_BRPORT_PROXYARP_WIFI,
4ebc7660
NA		 250 !!(p->flags & BR_PROXYARP_WIFI)) ||
251 nla_put(skb, IFLA_BRPORT_ROOT_ID, sizeof(struct ifla_bridge_id),
80df9a26
NA		 252 &p->designated_root) ||
253 nla_put(skb, IFLA_BRPORT_BRIDGE_ID, sizeof(struct ifla_bridge_id),
96f94e7f
NA		 254 &p->designated_bridge) ||
255 nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_PORT, p->designated_port) ||
42d452c4
NA		 256 nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_COST, p->designated_cost) ||
257 nla_put_u16(skb, IFLA_BRPORT_ID, p->port_id) ||
e08e838a
NA		 258 nla_put_u16(skb, IFLA_BRPORT_NO, p->port_no) ||
259 nla_put_u8(skb, IFLA_BRPORT_TOPOLOGY_CHANGE_ACK,
260 p->topology_change_ack) ||
efa5356b
RP		 261 nla_put_u8(skb, IFLA_BRPORT_CONFIG_PENDING, p->config_pending) ||
262 nla_put_u8(skb, IFLA_BRPORT_VLAN_TUNNEL, !!(p->flags &
5af48b59 263 BR_VLAN_TUNNEL)) ||
821f1b21
RP		 264 nla_put_u16(skb, IFLA_BRPORT_GROUP_FWD_MASK, p->group_fwd_mask) ||
265 nla_put_u8(skb, IFLA_BRPORT_NEIGH_SUPPRESS,
7d850abd 266 !!(p->flags & BR_NEIGH_SUPPRESS)) ||
3e54442c
HV		 267 nla_put_u8(skb, IFLA_BRPORT_MRP_RING_OPEN, !!(p->flags &
268 BR_MRP_LOST_CONT)) ||
ffb3adba
HV		 269 nla_put_u8(skb, IFLA_BRPORT_MRP_IN_OPEN,
270 !!(p->flags & BR_MRP_LOST_IN_CONT)) ||
7d850abd 271 nla_put_u8(skb, IFLA_BRPORT_ISOLATED, !!(p->flags & BR_ISOLATED)))
25c71c75 272 return -EMSGSIZE;
273
61c0a9a8 274 timerval = br_timer_value(&p->message_age_timer);
12a0faa3
ND		 275 if (nla_put_u64_64bit(skb, IFLA_BRPORT_MESSAGE_AGE_TIMER, timerval,
276 IFLA_BRPORT_PAD))
61c0a9a8
NA		 277 return -EMSGSIZE;
278 timerval = br_timer_value(&p->forward_delay_timer);
12a0faa3
ND		 279 if (nla_put_u64_64bit(skb, IFLA_BRPORT_FORWARD_DELAY_TIMER, timerval,
280 IFLA_BRPORT_PAD))
61c0a9a8
NA		 281 return -EMSGSIZE;
282 timerval = br_timer_value(&p->hold_timer);
12a0faa3
ND		 283 if (nla_put_u64_64bit(skb, IFLA_BRPORT_HOLD_TIMER, timerval,
284 IFLA_BRPORT_PAD))
61c0a9a8
NA		 285 return -EMSGSIZE;
286
5d6ae479
NA		 287#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
288 if (nla_put_u8(skb, IFLA_BRPORT_MULTICAST_ROUTER,
2dba407f
NA		 289 p->multicast_router) ||
290 nla_put_u32(skb, IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT,
291 p->multicast_eht_hosts_limit) ||
292 nla_put_u32(skb, IFLA_BRPORT_MCAST_EHT_HOSTS_CNT,
293 p->multicast_eht_hosts_cnt))
5d6ae479
NA		 294 return -EMSGSIZE;
295#endif
296
2756f68c
NA		 297 /* we might be called only with br->lock */
298 rcu_read_lock();
299 backup_p = rcu_dereference(p->backup_port);
300 if (backup_p)
301 nla_put_u32(skb, IFLA_BRPORT_BACKUP_PORT,
302 backup_p->dev->ifindex);
303 rcu_read_unlock();
304
25c71c75 305 return 0;
339bf98f
TG		 306}
307
36cd0ffb
RP		 308static int br_fill_ifvlaninfo_range(struct sk_buff *skb, u16 vid_start,
309 u16 vid_end, u16 flags)
310{
311 struct bridge_vlan_info vinfo;
312
313 if ((vid_end - vid_start) > 0) {
314 /* add range to skb */
315 vinfo.vid = vid_start;
316 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_BEGIN;
317 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
318 sizeof(vinfo), &vinfo))
319 goto nla_put_failure;
320
36cd0ffb
RP		 321 vinfo.vid = vid_end;
322 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_END;
323 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
324 sizeof(vinfo), &vinfo))
325 goto nla_put_failure;
326 } else {
327 vinfo.vid = vid_start;
328 vinfo.flags = flags;
329 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
330 sizeof(vinfo), &vinfo))
331 goto nla_put_failure;
332 }
333
334 return 0;
335
336nla_put_failure:
337 return -EMSGSIZE;
338}
339
340static int br_fill_ifvlaninfo_compressed(struct sk_buff *skb,
77751ee8 341 struct net_bridge_vlan_group *vg)
36cd0ffb 342{
2594e906
NA		 343 struct net_bridge_vlan *v;
344 u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0;
77751ee8 345 u16 flags, pvid;
36cd0ffb
RP		 346 int err = 0;
347
348 /* Pack IFLA_BRIDGE_VLAN_INFO's for every vlan
349 * and mark vlan info with begin and end flags
350 * if vlaninfo represents a range
351 */
77751ee8 352 pvid = br_get_pvid(vg);
e9c953ef 353 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
36cd0ffb 354 flags = 0;
2594e906
NA		 355 if (!br_vlan_should_use(v))
356 continue;
357 if (v->vid == pvid)
36cd0ffb
RP		 358 flags |= BRIDGE_VLAN_INFO_PVID;
359
2594e906 360 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
36cd0ffb
RP		 361 flags |= BRIDGE_VLAN_INFO_UNTAGGED;
362
363 if (vid_range_start == 0) {
364 goto initvars;
2594e906 365 } else if ((v->vid - vid_range_end) == 1 &&
36cd0ffb 366 flags == vid_range_flags) {
2594e906 367 vid_range_end = v->vid;
36cd0ffb
RP		 368 continue;
369 } else {
370 err = br_fill_ifvlaninfo_range(skb, vid_range_start,
371 vid_range_end,
372 vid_range_flags);
373 if (err)
374 return err;
375 }
376
377initvars:
2594e906
NA		 378 vid_range_start = v->vid;
379 vid_range_end = v->vid;
36cd0ffb
RP		 380 vid_range_flags = flags;
381 }
382
0fe6de49
RP		 383 if (vid_range_start != 0) {
384 /* Call it once more to send any left over vlans */
385 err = br_fill_ifvlaninfo_range(skb, vid_range_start,
386 vid_range_end,
387 vid_range_flags);
388 if (err)
389 return err;
390 }
36cd0ffb
RP		 391
392 return 0;
393}
394
395static int br_fill_ifvlaninfo(struct sk_buff *skb,
77751ee8 396 struct net_bridge_vlan_group *vg)
36cd0ffb
RP		 397{
398 struct bridge_vlan_info vinfo;
2594e906 399 struct net_bridge_vlan *v;
77751ee8 400 u16 pvid;
36cd0ffb 401
77751ee8 402 pvid = br_get_pvid(vg);
e9c953ef 403 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
2594e906
NA		 404 if (!br_vlan_should_use(v))
405 continue;
406
407 vinfo.vid = v->vid;
36cd0ffb 408 vinfo.flags = 0;
2594e906 409 if (v->vid == pvid)
36cd0ffb
RP		 410 vinfo.flags |= BRIDGE_VLAN_INFO_PVID;
411
2594e906 412 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
36cd0ffb
RP		 413 vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED;
414
415 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
416 sizeof(vinfo), &vinfo))
417 goto nla_put_failure;
418 }
419
420 return 0;
421
422nla_put_failure:
423 return -EMSGSIZE;
424}
425
11dc1f36
SH		 426/*
427 * Create one netlink message for one interface
428 * Contains port and master info as well as carrier and bridge state.
429 */
6cbdceeb 430static int br_fill_ifinfo(struct sk_buff *skb,
92899063 431 const struct net_bridge_port *port,
6cbdceeb 432 u32 pid, u32 seq, int event, unsigned int flags,
b6d0425b
HB		 433 u32 filter_mask, const struct net_device *dev,
434 bool getlink)
11dc1f36 435{
92899063 436 u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN;
b6c02ef5 437 struct nlattr *af = NULL;
2594e906 438 struct net_bridge *br;
74685962 439 struct ifinfomsg *hdr;
11dc1f36 440 struct nlmsghdr *nlh;
11dc1f36 441
6cbdceeb
VY		 442 if (port)
443 br = port->br;
444 else
445 br = netdev_priv(dev);
446
28a16c97 447 br_debug(br, "br_fill_info event %d port %s master %s\n",
448 event, dev->name, br->dev->name);
11dc1f36 449
74685962
TG		 450 nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags);
451 if (nlh == NULL)
26932566 452 return -EMSGSIZE;
11dc1f36 453
74685962
TG		 454 hdr = nlmsg_data(nlh);
455 hdr->ifi_family = AF_BRIDGE;
456 hdr->__ifi_pad = 0;
457 hdr->ifi_type = dev->type;
458 hdr->ifi_index = dev->ifindex;
459 hdr->ifi_flags = dev_get_flags(dev);
460 hdr->ifi_change = 0;
11dc1f36 461
2eb812e6
DM		 462 if (nla_put_string(skb, IFLA_IFNAME, dev->name) ||
463 nla_put_u32(skb, IFLA_MASTER, br->dev->ifindex) ||
464 nla_put_u32(skb, IFLA_MTU, dev->mtu) ||
465 nla_put_u8(skb, IFLA_OPERSTATE, operstate) ||
466 (dev->addr_len &&
467 nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) ||
a54acb3a
ND		 468 (dev->ifindex != dev_get_iflink(dev) &&
469 nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev))))
2eb812e6 470 goto nla_put_failure;
25c71c75 471
6cbdceeb 472 if (event == RTM_NEWLINK && port) {
f78c6032 473 struct nlattr *nest;
25c71c75 474
f78c6032 475 nest = nla_nest_start(skb, IFLA_PROTINFO);
25c71c75 476 if (nest == NULL || br_port_fill_attrs(skb, port) < 0)
477 goto nla_put_failure;
478 nla_nest_end(skb, nest);
479 }
480
b6c02ef5
HB		 481 if (filter_mask & (RTEXT_FILTER_BRVLAN |
482 RTEXT_FILTER_BRVLAN_COMPRESSED |
5e312fc0 483 RTEXT_FILTER_MRP |
e77824d8
HB		 484 RTEXT_FILTER_CFM_CONFIG |
485 RTEXT_FILTER_CFM_STATUS)) {
b6c02ef5
HB		 486 af = nla_nest_start_noflag(skb, IFLA_AF_SPEC);
487 if (!af)
488 goto nla_put_failure;
489 }
490
6cbdceeb 491 /* Check if the VID information is requested */
36cd0ffb
RP		 492 if ((filter_mask & RTEXT_FILTER_BRVLAN) ||
493 (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) {
2594e906 494 struct net_bridge_vlan_group *vg;
36cd0ffb 495 int err;
6cbdceeb 496
e9c953ef
NA		 497 /* RCU needed because of the VLAN locking rules (rcu || rtnl) */
498 rcu_read_lock();
77751ee8 499 if (port)
e9c953ef 500 vg = nbp_vlan_group_rcu(port);
77751ee8 501 else
e9c953ef 502 vg = br_vlan_group_rcu(br);
6cbdceeb 503
e9c953ef
NA		 504 if (!vg || !vg->num_vlans) {
505 rcu_read_unlock();
6cbdceeb 506 goto done;
e9c953ef 507 }
36cd0ffb 508 if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)
77751ee8 509 err = br_fill_ifvlaninfo_compressed(skb, vg);
36cd0ffb 510 else
77751ee8 511 err = br_fill_ifvlaninfo(skb, vg);
efa5356b
RP		 512
513 if (port && (port->flags & BR_VLAN_TUNNEL))
514 err = br_fill_vlan_tunnel_info(skb, vg);
e9c953ef 515 rcu_read_unlock();
36cd0ffb
RP		 516 if (err)
517 goto nla_put_failure;
36a8e8e2
HV		 518 }
519
520 if (filter_mask & RTEXT_FILTER_MRP) {
36a8e8e2
HV		 521 int err;
522
523 if (!br_mrp_enabled(br) || port)
524 goto done;
525
36a8e8e2
HV		 526 rcu_read_lock();
527 err = br_mrp_fill_info(skb, br);
528 rcu_read_unlock();
529
530 if (err)
531 goto nla_put_failure;
6cbdceeb
VY		 532 }
533
e77824d8 534 if (filter_mask & (RTEXT_FILTER_CFM_CONFIG | RTEXT_FILTER_CFM_STATUS)) {
5e312fc0
HB		 535 struct nlattr *cfm_nest = NULL;
536 int err;
537
538 if (!br_cfm_created(br) || port)
539 goto done;
540
541 cfm_nest = nla_nest_start(skb, IFLA_BRIDGE_CFM);
542 if (!cfm_nest)
543 goto nla_put_failure;
544
545 if (filter_mask & RTEXT_FILTER_CFM_CONFIG) {
546 rcu_read_lock();
547 err = br_cfm_config_fill_info(skb, br);
548 rcu_read_unlock();
549 if (err)
550 goto nla_put_failure;
551 }
552
e77824d8
HB		 553 if (filter_mask & RTEXT_FILTER_CFM_STATUS) {
554 rcu_read_lock();
b6d0425b 555 err = br_cfm_status_fill_info(skb, br, getlink);
e77824d8
HB		 556 rcu_read_unlock();
557 if (err)
558 goto nla_put_failure;
559 }
560
5e312fc0
HB		 561 nla_nest_end(skb, cfm_nest);
562 }
563
6cbdceeb 564done:
b6c02ef5
HB		 565 if (af)
566 nla_nest_end(skb, af);
053c095a
JB		 567 nlmsg_end(skb, nlh);
568 return 0;
11dc1f36 569
74685962 570nla_put_failure:
26932566
PM		 571 nlmsg_cancel(skb, nlh);
572 return -EMSGSIZE;
11dc1f36
SH		 573}
574
b6d0425b
HB		 575void br_info_notify(int event, const struct net_bridge *br,
576 const struct net_bridge_port *port, u32 filter)
11dc1f36 577{
92899063 578 struct net_device *dev;
11dc1f36 579 struct sk_buff *skb;
280a306c 580 int err = -ENOBUFS;
92899063
NA		 581 struct net *net;
582 u16 port_no = 0;
11dc1f36 583
92899063 584 if (WARN_ON(!port && !br))
407af329
VY		 585 return;
586
92899063
NA		 587 if (port) {
588 dev = port->dev;
589 br = port->br;
590 port_no = port->port_no;
591 } else {
592 dev = br->dev;
593 }
594
595 net = dev_net(dev);
596 br_debug(br, "port %u(%s) event %d\n", port_no, dev->name, event);
28a16c97 597
92899063 598 skb = nlmsg_new(br_nlmsg_size(dev, filter), GFP_ATOMIC);
280a306c
TG		 599 if (skb == NULL)
600 goto errout;
601
b6d0425b 602 err = br_fill_ifinfo(skb, port, 0, 0, event, 0, filter, dev, false);
26932566
PM		 603 if (err < 0) {
604 /* -EMSGSIZE implies BUG in br_nlmsg_size() */
605 WARN_ON(err == -EMSGSIZE);
606 kfree_skb(skb);
607 goto errout;
608 }
1ce85fe4
PNA		 609 rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC);
610 return;
280a306c 611errout:
87e823b3 612 rtnl_set_sk_err(net, RTNLGRP_LINK, err);
11dc1f36
SH		 613}
614
b6d0425b
HB		 615/* Notify listeners of a change in bridge or port information */
616void br_ifinfo_notify(int event, const struct net_bridge *br,
617 const struct net_bridge_port *port)
618{
619 u32 filter = RTEXT_FILTER_BRVLAN_COMPRESSED;
620
621 return br_info_notify(event, br, port, filter);
622}
623
11dc1f36
SH		 624/*
625 * Dump information about all ports, in response to GETLINK
626 */
e5a55a89 627int br_getlink(struct sk_buff *skb, u32 pid, u32 seq,
46c264da 628 struct net_device *dev, u32 filter_mask, int nlflags)
11dc1f36 629{
1fb1754a 630 struct net_bridge_port *port = br_port_get_rtnl(dev);
e5a55a89 631
36cd0ffb 632 if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) &&
36a8e8e2 633 !(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) &&
5e312fc0 634 !(filter_mask & RTEXT_FILTER_MRP) &&
e77824d8
HB		 635 !(filter_mask & RTEXT_FILTER_CFM_CONFIG) &&
636 !(filter_mask & RTEXT_FILTER_CFM_STATUS))
1b846f92 637 return 0;
11dc1f36 638
46c264da 639 return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags,
b6d0425b 640 filter_mask, dev, true);
11dc1f36
SH		 641}
642
bdced7ef 643static int br_vlan_info(struct net_bridge *br, struct net_bridge_port *p,
169327d5
PM		 644 int cmd, struct bridge_vlan_info *vinfo, bool *changed,
645 struct netlink_ext_ack *extack)
bdced7ef 646{
f418af63 647 bool curr_change;
bdced7ef
RP		 648 int err = 0;
649
650 switch (cmd) {
651 case RTM_SETLINK:
652 if (p) {
2594e906
NA		 653 /* if the MASTER flag is set this will act on the global
654 * per-VLAN entry as well
655 */
f418af63 656 err = nbp_vlan_add(p, vinfo->vid, vinfo->flags,
169327d5 657 &curr_change, extack);
bdced7ef 658 } else {
2594e906 659 vinfo->flags |= BRIDGE_VLAN_INFO_BRENTRY;
f418af63 660 err = br_vlan_add(br, vinfo->vid, vinfo->flags,
169327d5 661 &curr_change, extack);
bdced7ef 662 }
f418af63 663 if (curr_change)
e19b42a1 664 *changed = true;
bdced7ef
RP		 665 break;
666
667 case RTM_DELLINK:
668 if (p) {
e19b42a1
NA		 669 if (!nbp_vlan_delete(p, vinfo->vid))
670 *changed = true;
671
672 if ((vinfo->flags & BRIDGE_VLAN_INFO_MASTER) &&
673 !br_vlan_delete(p->br, vinfo->vid))
674 *changed = true;
675 } else if (!br_vlan_delete(br, vinfo->vid)) {
676 *changed = true;
bdced7ef
RP		 677 }
678 break;
679 }
680
681 return err;
682}
407af329 683
f26b2965
NA		 684int br_process_vlan_info(struct net_bridge *br,
685 struct net_bridge_port *p, int cmd,
686 struct bridge_vlan_info *vinfo_curr,
687 struct bridge_vlan_info **vinfo_last,
688 bool *changed,
689 struct netlink_ext_ack *extack)
efa5356b 690{
f545923b
NA		 691 int err, rtm_cmd;
692
8f4cc940 693 if (!br_vlan_valid_id(vinfo_curr->vid, extack))
efa5356b
RP		 694 return -EINVAL;
695
f545923b
NA		 696 /* needed for vlan-only NEWVLAN/DELVLAN notifications */
697 rtm_cmd = br_afspec_cmd_to_rtm(cmd);
698
efa5356b 699 if (vinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) {
8f4cc940 700 if (!br_vlan_valid_range(vinfo_curr, *vinfo_last, extack))
efa5356b
RP		 701 return -EINVAL;
702 *vinfo_last = vinfo_curr;
efa5356b
RP		 703 return 0;
704 }
705
706 if (*vinfo_last) {
707 struct bridge_vlan_info tmp_vinfo;
f545923b 708 int v, v_change_start = 0;
efa5356b 709
8f4cc940 710 if (!br_vlan_valid_range(vinfo_curr, *vinfo_last, extack))
efa5356b
RP		 711 return -EINVAL;
712
713 memcpy(&tmp_vinfo, *vinfo_last,
714 sizeof(struct bridge_vlan_info));
715 for (v = (*vinfo_last)->vid; v <= vinfo_curr->vid; v++) {
f545923b
NA		 716 bool curr_change = false;
717
efa5356b 718 tmp_vinfo.vid = v;
f545923b 719 err = br_vlan_info(br, p, cmd, &tmp_vinfo, &curr_change,
169327d5 720 extack);
efa5356b
RP		 721 if (err)
722 break;
f545923b
NA		 723 if (curr_change) {
724 *changed = curr_change;
725 if (!v_change_start)
726 v_change_start = v;
727 } else {
728 /* nothing to notify yet */
729 if (!v_change_start)
730 continue;
731 br_vlan_notify(br, p, v_change_start,
732 v - 1, rtm_cmd);
733 v_change_start = 0;
734 }
7979457b 735 cond_resched();
efa5356b 736 }
f545923b
NA		 737 /* v_change_start is set only if the last/whole range changed */
738 if (v_change_start)
739 br_vlan_notify(br, p, v_change_start,
740 v - 1, rtm_cmd);
741
efa5356b
RP		 742 *vinfo_last = NULL;
743
66c54517 744 return err;
efa5356b
RP		 745 }
746
f545923b
NA		 747 err = br_vlan_info(br, p, cmd, vinfo_curr, changed, extack);
748 if (*changed)
749 br_vlan_notify(br, p, vinfo_curr->vid, 0, rtm_cmd);
750
751 return err;
efa5356b
RP		 752}
753
407af329
VY		 754static int br_afspec(struct net_bridge *br,
755 struct net_bridge_port *p,
756 struct nlattr *af_spec,
169327d5
PM		 757 int cmd, bool *changed,
758 struct netlink_ext_ack *extack)
407af329 759{
efa5356b
RP		 760 struct bridge_vlan_info *vinfo_curr = NULL;
761 struct bridge_vlan_info *vinfo_last = NULL;
bdced7ef 762 struct nlattr *attr;
efa5356b
RP		 763 struct vtunnel_info tinfo_last = {};
764 struct vtunnel_info tinfo_curr = {};
765 int err = 0, rem;
407af329 766
bdced7ef 767 nla_for_each_nested(attr, af_spec, rem) {
efa5356b
RP		 768 err = 0;
769 switch (nla_type(attr)) {
770 case IFLA_BRIDGE_VLAN_TUNNEL_INFO:
1020ce31 771 if (!p || !(p->flags & BR_VLAN_TUNNEL))
bdced7ef 772 return -EINVAL;
efa5356b
RP		 773 err = br_parse_vlan_tunnel_info(attr, &tinfo_curr);
774 if (err)
775 return err;
776 err = br_process_vlan_tunnel_info(br, p, cmd,
777 &tinfo_curr,
e19b42a1
NA		 778 &tinfo_last,
779 changed);
efa5356b
RP		 780 if (err)
781 return err;
782 break;
783 case IFLA_BRIDGE_VLAN_INFO:
784 if (nla_len(attr) != sizeof(struct bridge_vlan_info))
6623c60d 785 return -EINVAL;
efa5356b
RP		 786 vinfo_curr = nla_data(attr);
787 err = br_process_vlan_info(br, p, cmd, vinfo_curr,
169327d5
PM		 788 &vinfo_last, changed,
789 extack);
efa5356b
RP		 790 if (err)
791 return err;
792 break;
65369933
HV		 793 case IFLA_BRIDGE_MRP:
794 err = br_mrp_parse(br, p, attr, cmd, extack);
795 if (err)
796 return err;
797 break;
2be665c3
HB		 798 case IFLA_BRIDGE_CFM:
799 err = br_cfm_parse(br, p, attr, cmd, extack);
800 if (err)
801 return err;
802 break;
bdced7ef 803 }
407af329
VY		 804 }
805
806 return err;
807}
808
3ac636b8 809static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = {
25c71c75 810 [IFLA_BRPORT_STATE] = { .type = NLA_U8 },
811 [IFLA_BRPORT_COST] = { .type = NLA_U32 },
812 [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 },
813 [IFLA_BRPORT_MODE] = { .type = NLA_U8 },
a2e01a65 814 [IFLA_BRPORT_GUARD] = { .type = NLA_U8 },
1007dd1a 815 [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 },
6f705d8c 816 [IFLA_BRPORT_FAST_LEAVE]= { .type = NLA_U8 },
9ba18891 817 [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 },
867a5943 818 [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 },
355b9f9d 819 [IFLA_BRPORT_PROXYARP] = { .type = NLA_U8 },
786c2077 820 [IFLA_BRPORT_PROXYARP_WIFI] = { .type = NLA_U8 },
5d6ae479 821 [IFLA_BRPORT_MULTICAST_ROUTER] = { .type = NLA_U8 },
6db6f0ea 822 [IFLA_BRPORT_MCAST_TO_UCAST] = { .type = NLA_U8 },
9051247d
TK		 823 [IFLA_BRPORT_MCAST_FLOOD] = { .type = NLA_U8 },
824 [IFLA_BRPORT_BCAST_FLOOD] = { .type = NLA_U8 },
fbec443b 825 [IFLA_BRPORT_VLAN_TUNNEL] = { .type = NLA_U8 },
5af48b59 826 [IFLA_BRPORT_GROUP_FWD_MASK] = { .type = NLA_U16 },
1a3fbd3f 827 [IFLA_BRPORT_NEIGH_SUPPRESS] = { .type = NLA_U8 },
7d850abd 828 [IFLA_BRPORT_ISOLATED] = { .type = NLA_U8 },
2756f68c 829 [IFLA_BRPORT_BACKUP_PORT] = { .type = NLA_U32 },
2dba407f 830 [IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT] = { .type = NLA_U32 },
25c71c75 831};
832
833/* Change the state of the port and notify spanning tree */
834static int br_set_port_state(struct net_bridge_port *p, u8 state)
835{
836 if (state > BR_STATE_BLOCKING)
837 return -EINVAL;
838
839 /* if kernel STP is running, don't allow changes */
840 if (p->br->stp_enabled == BR_KERNEL_STP)
841 return -EBUSY;
842
576eb625 843 /* if device is not up, change is not allowed
844 * if link is not present, only allowable state is disabled
845 */
25c71c75 846 if (!netif_running(p->dev) ||
576eb625 847 (!netif_oper_up(p->dev) && state != BR_STATE_DISABLED))
25c71c75 848 return -ENETDOWN;
849
775dd692 850 br_set_state(p, state);
25c71c75 851 br_port_state_selection(p->br);
852 return 0;
853}
854
855/* Set/clear or port flags based on attribute */
304ae3bf
VO		 856static void br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[],
857 int attrtype, unsigned long mask)
25c71c75 858{
3922285d 859 if (!tb[attrtype])
304ae3bf 860 return;
3922285d
AS		 861
862 if (nla_get_u8(tb[attrtype]))
304ae3bf 863 p->flags |= mask;
3922285d 864 else
304ae3bf 865 p->flags &= ~mask;
25c71c75 866}
867
868/* Process bridge protocol info on port */
078bbb85
VO		 869static int br_setport(struct net_bridge_port *p, struct nlattr *tb[],
870 struct netlink_ext_ack *extack)
25c71c75 871{
304ae3bf
VO		 872 unsigned long old_flags, changed_mask;
873 bool br_vlan_tunnel_old;
efa5356b 874 int err;
25c71c75 875
304ae3bf
VO		 876 old_flags = p->flags;
877 br_vlan_tunnel_old = (old_flags & BR_VLAN_TUNNEL) ? true : false;
878
879 br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE);
880 br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD);
881 br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE,
882 BR_MULTICAST_FAST_LEAVE);
883 br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK);
884 br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING);
885 br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD);
886 br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_FLOOD, BR_MCAST_FLOOD);
887 br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_TO_UCAST,
888 BR_MULTICAST_TO_UNICAST);
889 br_set_port_flag(p, tb, IFLA_BRPORT_BCAST_FLOOD, BR_BCAST_FLOOD);
890 br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP);
891 br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI);
892 br_set_port_flag(p, tb, IFLA_BRPORT_VLAN_TUNNEL, BR_VLAN_TUNNEL);
893 br_set_port_flag(p, tb, IFLA_BRPORT_NEIGH_SUPPRESS, BR_NEIGH_SUPPRESS);
894 br_set_port_flag(p, tb, IFLA_BRPORT_ISOLATED, BR_ISOLATED);
895
896 changed_mask = old_flags ^ p->flags;
897
078bbb85 898 err = br_switchdev_set_port_flag(p, p->flags, changed_mask, extack);
304ae3bf
VO		 899 if (err) {
900 p->flags = old_flags;
3922285d 901 return err;
304ae3bf 902 }
3922285d 903
efa5356b
RP		 904 if (br_vlan_tunnel_old && !(p->flags & BR_VLAN_TUNNEL))
905 nbp_vlan_tunnel_info_flush(p);
906
304ae3bf
VO		 907 br_port_flags_change(p, changed_mask);
908
25c71c75 909 if (tb[IFLA_BRPORT_COST]) {
910 err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST]));
911 if (err)
912 return err;
913 }
914
915 if (tb[IFLA_BRPORT_PRIORITY]) {
916 err = br_stp_set_port_priority(p, nla_get_u16(tb[IFLA_BRPORT_PRIORITY]));
917 if (err)
918 return err;
919 }
920
921 if (tb[IFLA_BRPORT_STATE]) {
922 err = br_set_port_state(p, nla_get_u8(tb[IFLA_BRPORT_STATE]));
923 if (err)
924 return err;
925 }
e028e4b8 926
9b0c6e4d
NA		 927 if (tb[IFLA_BRPORT_FLUSH])
928 br_fdb_delete_by_port(p->br, p, 0, 0);
929
5d6ae479
NA		 930#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
931 if (tb[IFLA_BRPORT_MULTICAST_ROUTER]) {
932 u8 mcast_router = nla_get_u8(tb[IFLA_BRPORT_MULTICAST_ROUTER]);
933
934 err = br_multicast_set_port_router(p, mcast_router);
935 if (err)
936 return err;
937 }
2dba407f
NA		 938
939 if (tb[IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT]) {
940 u32 hlimit;
941
942 hlimit = nla_get_u32(tb[IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT]);
943 err = br_multicast_eht_set_hosts_limit(p, hlimit);
944 if (err)
945 return err;
946 }
5d6ae479 947#endif
5af48b59
NA		 948
949 if (tb[IFLA_BRPORT_GROUP_FWD_MASK]) {
950 u16 fwd_mask = nla_get_u16(tb[IFLA_BRPORT_GROUP_FWD_MASK]);
951
952 if (fwd_mask & BR_GROUPFWD_MACPAUSE)
953 return -EINVAL;
954 p->group_fwd_mask = fwd_mask;
955 }
956
2756f68c
NA		 957 if (tb[IFLA_BRPORT_BACKUP_PORT]) {
958 struct net_device *backup_dev = NULL;
959 u32 backup_ifindex;
960
961 backup_ifindex = nla_get_u32(tb[IFLA_BRPORT_BACKUP_PORT]);
962 if (backup_ifindex) {
963 backup_dev = __dev_get_by_index(dev_net(p->dev),
964 backup_ifindex);
965 if (!backup_dev)
966 return -ENOENT;
967 }
968
969 err = nbp_backup_change(p, backup_dev);
970 if (err)
971 return err;
972 }
973
25c71c75 974 return 0;
975}
976
977/* Change state and parameters on port. */
2fd527b7
PM		 978int br_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags,
979 struct netlink_ext_ack *extack)
11dc1f36 980{
92899063
NA		 981 struct net_bridge *br = (struct net_bridge *)netdev_priv(dev);
982 struct nlattr *tb[IFLA_BRPORT_MAX + 1];
983 struct net_bridge_port *p;
74685962 984 struct nlattr *protinfo;
407af329 985 struct nlattr *afspec;
e19b42a1 986 bool changed = false;
41c498b9 987 int err = 0;
11dc1f36 988
c60ee67f
H		 989 protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO);
990 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
407af329 991 if (!protinfo && !afspec)
25c71c75 992 return 0;
11dc1f36 993
ec1e5610 994 p = br_port_get_rtnl(dev);
407af329 995 /* We want to accept dev as bridge itself if the AF_SPEC
8e3bff96 996 * is set to see if someone is setting vlan info on the bridge
407af329 997 */
7b99a993 998 if (!p && !afspec)
b5ed54e9 999 return -EINVAL;
11dc1f36 1000
407af329
VY		 1001 if (p && protinfo) {
1002 if (protinfo->nla_type & NLA_F_NESTED) {
8cb08174
JB		 1003 err = nla_parse_nested_deprecated(tb, IFLA_BRPORT_MAX,
1004 protinfo,
1005 br_port_policy,
1006 NULL);
407af329
VY		 1007 if (err)
1008 return err;
1009
1010 spin_lock_bh(&p->br->lock);
078bbb85 1011 err = br_setport(p, tb, extack);
407af329
VY		 1012 spin_unlock_bh(&p->br->lock);
1013 } else {
8e3bff96 1014 /* Binary compatibility with old RSTP */
407af329
VY		 1015 if (nla_len(protinfo) < sizeof(u8))
1016 return -EINVAL;
1017
1018 spin_lock_bh(&p->br->lock);
1019 err = br_set_port_state(p, nla_get_u8(protinfo));
1020 spin_unlock_bh(&p->br->lock);
1021 }
25c71c75 1022 if (err)
407af329 1023 goto out;
e19b42a1 1024 changed = true;
407af329 1025 }
11dc1f36 1026
92899063 1027 if (afspec)
169327d5 1028 err = br_afspec(br, p, afspec, RTM_SETLINK, &changed, extack);
b03b6dd5 1029
e19b42a1 1030 if (changed)
92899063 1031 br_ifinfo_notify(RTM_NEWLINK, br, p);
407af329 1032out:
25c71c75 1033 return err;
11dc1f36
SH		 1034}
1035
407af329 1036/* Delete port information */
add511b3 1037int br_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags)
407af329 1038{
92899063 1039 struct net_bridge *br = (struct net_bridge *)netdev_priv(dev);
407af329 1040 struct net_bridge_port *p;
92899063 1041 struct nlattr *afspec;
e19b42a1 1042 bool changed = false;
8508025c 1043 int err = 0;
407af329 1044
c60ee67f 1045 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
407af329
VY		 1046 if (!afspec)
1047 return 0;
1048
1049 p = br_port_get_rtnl(dev);
1050 /* We want to accept dev as bridge itself as well */
1051 if (!p && !(dev->priv_flags & IFF_EBRIDGE))
1052 return -EINVAL;
1053
169327d5 1054 err = br_afspec(br, p, afspec, RTM_DELLINK, &changed, NULL);
e19b42a1 1055 if (changed)
02dba438
RP		 1056 /* Send RTM_NEWLINK because userspace
1057 * expects RTM_NEWLINK for vlan dels
1058 */
92899063 1059 br_ifinfo_notify(RTM_NEWLINK, br, p);
407af329
VY		 1060
1061 return err;
1062}
a8b8a889
MS		 1063
1064static int br_validate(struct nlattr *tb[], struct nlattr *data[],
1065 struct netlink_ext_ack *extack)
bb900b27 1066{
1067 if (tb[IFLA_ADDRESS]) {
1068 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
1069 return -EINVAL;
1070 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
1071 return -EADDRNOTAVAIL;
1072 }
1073
d2d427b3
TM		 1074 if (!data)
1075 return 0;
1076
1077#ifdef CONFIG_BRIDGE_VLAN_FILTERING
a98c0c47
MD		 1078 if (data[IFLA_BR_VLAN_PROTOCOL] &&
1079 !eth_type_vlan(nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL])))
1080 return -EPROTONOSUPPORT;
a2858602
TJ		 1081
1082 if (data[IFLA_BR_VLAN_DEFAULT_PVID]) {
1083 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]);
1084
1085 if (defpvid >= VLAN_VID_MASK)
1086 return -EINVAL;
1087 }
d2d427b3
TM		 1088#endif
1089
bb900b27 1090 return 0;
1091}
1092
3ac636b8
JP		 1093static int br_port_slave_changelink(struct net_device *brdev,
1094 struct net_device *dev,
1095 struct nlattr *tb[],
17dd0ec4
MS		 1096 struct nlattr *data[],
1097 struct netlink_ext_ack *extack)
3ac636b8 1098{
963ad948
NA		 1099 struct net_bridge *br = netdev_priv(brdev);
1100 int ret;
1101
3ac636b8
JP		 1102 if (!data)
1103 return 0;
963ad948
NA		 1104
1105 spin_lock_bh(&br->lock);
078bbb85 1106 ret = br_setport(br_port_get_rtnl(dev), data, extack);
963ad948
NA		 1107 spin_unlock_bh(&br->lock);
1108
1109 return ret;
3ac636b8
JP		 1110}
1111
ced8283f
JP		 1112static int br_port_fill_slave_info(struct sk_buff *skb,
1113 const struct net_device *brdev,
1114 const struct net_device *dev)
1115{
1116 return br_port_fill_attrs(skb, br_port_get_rtnl(dev));
1117}
1118
1119static size_t br_port_get_slave_size(const struct net_device *brdev,
1120 const struct net_device *dev)
1121{
1122 return br_port_info_size();
1123}
1124
13323516
JP		 1125static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = {
1126 [IFLA_BR_FORWARD_DELAY] = { .type = NLA_U32 },
1127 [IFLA_BR_HELLO_TIME] = { .type = NLA_U32 },
1128 [IFLA_BR_MAX_AGE] = { .type = NLA_U32 },
af615762
JT		 1129 [IFLA_BR_AGEING_TIME] = { .type = NLA_U32 },
1130 [IFLA_BR_STP_STATE] = { .type = NLA_U32 },
1131 [IFLA_BR_PRIORITY] = { .type = NLA_U16 },
a7854037 1132 [IFLA_BR_VLAN_FILTERING] = { .type = NLA_U8 },
d2d427b3 1133 [IFLA_BR_VLAN_PROTOCOL] = { .type = NLA_U16 },
7910228b 1134 [IFLA_BR_GROUP_FWD_MASK] = { .type = NLA_U16 },
111189ab
NA		 1135 [IFLA_BR_GROUP_ADDR] = { .type = NLA_BINARY,
1136 .len = ETH_ALEN },
a9a6bc70 1137 [IFLA_BR_MCAST_ROUTER] = { .type = NLA_U8 },
89126327 1138 [IFLA_BR_MCAST_SNOOPING] = { .type = NLA_U8 },
295141d9 1139 [IFLA_BR_MCAST_QUERY_USE_IFADDR] = { .type = NLA_U8 },
ba062d7c 1140 [IFLA_BR_MCAST_QUERIER] = { .type = NLA_U8 },
431db3c0 1141 [IFLA_BR_MCAST_HASH_ELASTICITY] = { .type = NLA_U32 },
858079fd 1142 [IFLA_BR_MCAST_HASH_MAX] = { .type = NLA_U32 },
79b859f5 1143 [IFLA_BR_MCAST_LAST_MEMBER_CNT] = { .type = NLA_U32 },
b89e6bab 1144 [IFLA_BR_MCAST_STARTUP_QUERY_CNT] = { .type = NLA_U32 },
7e4df51e
NA		 1145 [IFLA_BR_MCAST_LAST_MEMBER_INTVL] = { .type = NLA_U64 },
1146 [IFLA_BR_MCAST_MEMBERSHIP_INTVL] = { .type = NLA_U64 },
1147 [IFLA_BR_MCAST_QUERIER_INTVL] = { .type = NLA_U64 },
1148 [IFLA_BR_MCAST_QUERY_INTVL] = { .type = NLA_U64 },
1149 [IFLA_BR_MCAST_QUERY_RESPONSE_INTVL] = { .type = NLA_U64 },
1150 [IFLA_BR_MCAST_STARTUP_QUERY_INTVL] = { .type = NLA_U64 },
93870cc0
NA		 1151 [IFLA_BR_NF_CALL_IPTABLES] = { .type = NLA_U8 },
1152 [IFLA_BR_NF_CALL_IP6TABLES] = { .type = NLA_U8 },
1153 [IFLA_BR_NF_CALL_ARPTABLES] = { .type = NLA_U8 },
0f963b75 1154 [IFLA_BR_VLAN_DEFAULT_PVID] = { .type = NLA_U16 },
6dada9b1 1155 [IFLA_BR_VLAN_STATS_ENABLED] = { .type = NLA_U8 },
1080ab95 1156 [IFLA_BR_MCAST_STATS_ENABLED] = { .type = NLA_U8 },
5e923585 1157 [IFLA_BR_MCAST_IGMP_VERSION] = { .type = NLA_U8 },
aa2ae3e7 1158 [IFLA_BR_MCAST_MLD_VERSION] = { .type = NLA_U8 },
9163a0fc 1159 [IFLA_BR_VLAN_STATS_PER_PORT] = { .type = NLA_U8 },
8140860c
JB		 1160 [IFLA_BR_MULTI_BOOLOPT] =
1161 NLA_POLICY_EXACT_LEN(sizeof(struct br_boolopt_multi)),
13323516
JP		 1162};
1163
1164static int br_changelink(struct net_device *brdev, struct nlattr *tb[],
ad744b22
MS		 1165 struct nlattr *data[],
1166 struct netlink_ext_ack *extack)
13323516
JP		 1167{
1168 struct net_bridge *br = netdev_priv(brdev);
1169 int err;
1170
1171 if (!data)
1172 return 0;
1173
1174 if (data[IFLA_BR_FORWARD_DELAY]) {
1175 err = br_set_forward_delay(br, nla_get_u32(data[IFLA_BR_FORWARD_DELAY]));
1176 if (err)
1177 return err;
1178 }
1179
1180 if (data[IFLA_BR_HELLO_TIME]) {
1181 err = br_set_hello_time(br, nla_get_u32(data[IFLA_BR_HELLO_TIME]));
1182 if (err)
1183 return err;
1184 }
1185
1186 if (data[IFLA_BR_MAX_AGE]) {
1187 err = br_set_max_age(br, nla_get_u32(data[IFLA_BR_MAX_AGE]));
1188 if (err)
1189 return err;
1190 }
1191
af615762 1192 if (data[IFLA_BR_AGEING_TIME]) {
c62987bb
SF		 1193 err = br_set_ageing_time(br, nla_get_u32(data[IFLA_BR_AGEING_TIME]));
1194 if (err)
1195 return err;
af615762
JT		 1196 }
1197
1198 if (data[IFLA_BR_STP_STATE]) {
1199 u32 stp_enabled = nla_get_u32(data[IFLA_BR_STP_STATE]);
1200
419dba8a
HV		 1201 err = br_stp_set_enabled(br, stp_enabled, extack);
1202 if (err)
1203 return err;
af615762
JT		 1204 }
1205
1206 if (data[IFLA_BR_PRIORITY]) {
1207 u32 priority = nla_get_u16(data[IFLA_BR_PRIORITY]);
1208
1209 br_stp_set_bridge_priority(br, priority);
1210 }
1211
a7854037
NA		 1212 if (data[IFLA_BR_VLAN_FILTERING]) {
1213 u8 vlan_filter = nla_get_u8(data[IFLA_BR_VLAN_FILTERING]);
1214
9e781401 1215 err = br_vlan_filter_toggle(br, vlan_filter, extack);
a7854037
NA		 1216 if (err)
1217 return err;
1218 }
1219
d2d427b3
TM		 1220#ifdef CONFIG_BRIDGE_VLAN_FILTERING
1221 if (data[IFLA_BR_VLAN_PROTOCOL]) {
1222 __be16 vlan_proto = nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL]);
1223
1224 err = __br_vlan_set_proto(br, vlan_proto);
1225 if (err)
1226 return err;
1227 }
0f963b75
NA		 1228
1229 if (data[IFLA_BR_VLAN_DEFAULT_PVID]) {
1230 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]);
1231
169327d5 1232 err = __br_vlan_set_default_pvid(br, defpvid, extack);
0f963b75
NA		 1233 if (err)
1234 return err;
1235 }
6dada9b1
NA		 1236
1237 if (data[IFLA_BR_VLAN_STATS_ENABLED]) {
1238 __u8 vlan_stats = nla_get_u8(data[IFLA_BR_VLAN_STATS_ENABLED]);
1239
1240 err = br_vlan_set_stats(br, vlan_stats);
1241 if (err)
1242 return err;
1243 }
9163a0fc
NA		 1244
1245 if (data[IFLA_BR_VLAN_STATS_PER_PORT]) {
1246 __u8 per_port = nla_get_u8(data[IFLA_BR_VLAN_STATS_PER_PORT]);
1247
1248 err = br_vlan_set_stats_per_port(br, per_port);
1249 if (err)
1250 return err;
1251 }
d2d427b3
TM		 1252#endif
1253
7910228b
NA		 1254 if (data[IFLA_BR_GROUP_FWD_MASK]) {
1255 u16 fwd_mask = nla_get_u16(data[IFLA_BR_GROUP_FWD_MASK]);
1256
1257 if (fwd_mask & BR_GROUPFWD_RESTRICTED)
1258 return -EINVAL;
1259 br->group_fwd_mask = fwd_mask;
1260 }
1261
111189ab
NA		 1262 if (data[IFLA_BR_GROUP_ADDR]) {
1263 u8 new_addr[ETH_ALEN];
1264
1265 if (nla_len(data[IFLA_BR_GROUP_ADDR]) != ETH_ALEN)
1266 return -EINVAL;
1267 memcpy(new_addr, nla_data(data[IFLA_BR_GROUP_ADDR]), ETH_ALEN);
1268 if (!is_link_local_ether_addr(new_addr))
1269 return -EINVAL;
1270 if (new_addr[5] == 1 || /* 802.3x Pause address */
1271 new_addr[5] == 2 || /* 802.3ad Slow protocols */
1272 new_addr[5] == 3) /* 802.1X PAE address */
1273 return -EINVAL;
1274 spin_lock_bh(&br->lock);
1275 memcpy(br->group_addr, new_addr, sizeof(br->group_addr));
1276 spin_unlock_bh(&br->lock);
be3664a0 1277 br_opt_toggle(br, BROPT_GROUP_ADDR_SET, true);
111189ab
NA		 1278 br_recalculate_fwd_mask(br);
1279 }
1280
150217c6
NA		 1281 if (data[IFLA_BR_FDB_FLUSH])
1282 br_fdb_flush(br);
1283
a9a6bc70
NA		 1284#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1285 if (data[IFLA_BR_MCAST_ROUTER]) {
1286 u8 multicast_router = nla_get_u8(data[IFLA_BR_MCAST_ROUTER]);
1287
1288 err = br_multicast_set_router(br, multicast_router);
1289 if (err)
1290 return err;
1291 }
89126327
NA		 1292
1293 if (data[IFLA_BR_MCAST_SNOOPING]) {
1294 u8 mcast_snooping = nla_get_u8(data[IFLA_BR_MCAST_SNOOPING]);
1295
a26d94bf 1296 br_multicast_toggle(br, mcast_snooping);
89126327 1297 }
295141d9
NA		 1298
1299 if (data[IFLA_BR_MCAST_QUERY_USE_IFADDR]) {
1300 u8 val;
1301
1302 val = nla_get_u8(data[IFLA_BR_MCAST_QUERY_USE_IFADDR]);
675779ad 1303 br_opt_toggle(br, BROPT_MULTICAST_QUERY_USE_IFADDR, !!val);
295141d9 1304 }
ba062d7c
NA		 1305
1306 if (data[IFLA_BR_MCAST_QUERIER]) {
1307 u8 mcast_querier = nla_get_u8(data[IFLA_BR_MCAST_QUERIER]);
1308
1309 err = br_multicast_set_querier(br, mcast_querier);
1310 if (err)
1311 return err;
1312 }
431db3c0 1313
cf332bca
NA		 1314 if (data[IFLA_BR_MCAST_HASH_ELASTICITY])
1315 br_warn(br, "the hash_elasticity option has been deprecated and is always %u\n",
1316 RHT_ELASTICITY);
858079fd 1317
19e3a9c9
NA		 1318 if (data[IFLA_BR_MCAST_HASH_MAX])
1319 br->hash_max = nla_get_u32(data[IFLA_BR_MCAST_HASH_MAX]);
79b859f5
NA		 1320
1321 if (data[IFLA_BR_MCAST_LAST_MEMBER_CNT]) {
1322 u32 val = nla_get_u32(data[IFLA_BR_MCAST_LAST_MEMBER_CNT]);
1323
1324 br->multicast_last_member_count = val;
1325 }
b89e6bab
NA		 1326
1327 if (data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]) {
1328 u32 val = nla_get_u32(data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]);
1329
1330 br->multicast_startup_query_count = val;
1331 }
7e4df51e
NA		 1332
1333 if (data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]) {
1334 u64 val = nla_get_u64(data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]);
1335
1336 br->multicast_last_member_interval = clock_t_to_jiffies(val);
1337 }
1338
1339 if (data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]) {
1340 u64 val = nla_get_u64(data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]);
1341
1342 br->multicast_membership_interval = clock_t_to_jiffies(val);
1343 }
1344
1345 if (data[IFLA_BR_MCAST_QUERIER_INTVL]) {
1346 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERIER_INTVL]);
1347
1348 br->multicast_querier_interval = clock_t_to_jiffies(val);
1349 }
1350
1351 if (data[IFLA_BR_MCAST_QUERY_INTVL]) {
1352 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_INTVL]);
1353
1354 br->multicast_query_interval = clock_t_to_jiffies(val);
1355 }
1356
1357 if (data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]) {
1358 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]);
1359
1360 br->multicast_query_response_interval = clock_t_to_jiffies(val);
1361 }
1362
1363 if (data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]) {
1364 u64 val = nla_get_u64(data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]);
1365
1366 br->multicast_startup_query_interval = clock_t_to_jiffies(val);
1367 }
1080ab95
NA		 1368
1369 if (data[IFLA_BR_MCAST_STATS_ENABLED]) {
1370 __u8 mcast_stats;
1371
1372 mcast_stats = nla_get_u8(data[IFLA_BR_MCAST_STATS_ENABLED]);
675779ad 1373 br_opt_toggle(br, BROPT_MULTICAST_STATS_ENABLED, !!mcast_stats);
1080ab95 1374 }
5e923585
NA		 1375
1376 if (data[IFLA_BR_MCAST_IGMP_VERSION]) {
1377 __u8 igmp_version;
1378
1379 igmp_version = nla_get_u8(data[IFLA_BR_MCAST_IGMP_VERSION]);
1380 err = br_multicast_set_igmp_version(br, igmp_version);
1381 if (err)
1382 return err;
1383 }
aa2ae3e7
NA		 1384
1385#if IS_ENABLED(CONFIG_IPV6)
1386 if (data[IFLA_BR_MCAST_MLD_VERSION]) {
1387 __u8 mld_version;
1388
1389 mld_version = nla_get_u8(data[IFLA_BR_MCAST_MLD_VERSION]);
1390 err = br_multicast_set_mld_version(br, mld_version);
1391 if (err)
1392 return err;
1393 }
1394#endif
a9a6bc70 1395#endif
93870cc0
NA		 1396#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1397 if (data[IFLA_BR_NF_CALL_IPTABLES]) {
1398 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IPTABLES]);
1399
8df3510f 1400 br_opt_toggle(br, BROPT_NF_CALL_IPTABLES, !!val);
93870cc0
NA		 1401 }
1402
1403 if (data[IFLA_BR_NF_CALL_IP6TABLES]) {
1404 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IP6TABLES]);
1405
8df3510f 1406 br_opt_toggle(br, BROPT_NF_CALL_IP6TABLES, !!val);
93870cc0
NA		 1407 }
1408
1409 if (data[IFLA_BR_NF_CALL_ARPTABLES]) {
1410 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_ARPTABLES]);
1411
8df3510f 1412 br_opt_toggle(br, BROPT_NF_CALL_ARPTABLES, !!val);
93870cc0
NA		 1413 }
1414#endif
a9a6bc70 1415
a428afe8
NA		 1416 if (data[IFLA_BR_MULTI_BOOLOPT]) {
1417 struct br_boolopt_multi *bm;
1418
1419 bm = nla_data(data[IFLA_BR_MULTI_BOOLOPT]);
1420 err = br_boolopt_multi_toggle(br, bm, extack);
1421 if (err)
1422 return err;
1423 }
1424
13323516
JP		 1425 return 0;
1426}
1427
b6677449 1428static int br_dev_newlink(struct net *src_net, struct net_device *dev,
7a3f4a18
MS		 1429 struct nlattr *tb[], struct nlattr *data[],
1430 struct netlink_ext_ack *extack)
b6677449
IV		 1431{
1432 struct net_bridge *br = netdev_priv(dev);
1433 int err;
1434
84aeb437
NA		 1435 err = register_netdevice(dev);
1436 if (err)
1437 return err;
1438
b6677449
IV		 1439 if (tb[IFLA_ADDRESS]) {
1440 spin_lock_bh(&br->lock);
1441 br_stp_change_bridge_id(br, nla_data(tb[IFLA_ADDRESS]));
1442 spin_unlock_bh(&br->lock);
1443 }
1444
ad744b22 1445 err = br_changelink(dev, tb, data, extack);
5b8d5429 1446 if (err)
84aeb437
NA		 1447 br_dev_delete(dev, NULL);
1448
5b8d5429 1449 return err;
b6677449
IV		 1450}
1451
e5c3ea5c
JP		 1452static size_t br_get_size(const struct net_device *brdev)
1453{
1454 return nla_total_size(sizeof(u32)) + /* IFLA_BR_FORWARD_DELAY */
1455 nla_total_size(sizeof(u32)) + /* IFLA_BR_HELLO_TIME */
1456 nla_total_size(sizeof(u32)) + /* IFLA_BR_MAX_AGE */
af615762
JT		 1457 nla_total_size(sizeof(u32)) + /* IFLA_BR_AGEING_TIME */
1458 nla_total_size(sizeof(u32)) + /* IFLA_BR_STP_STATE */
1459 nla_total_size(sizeof(u16)) + /* IFLA_BR_PRIORITY */
a7854037 1460 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_FILTERING */
d2d427b3
TM		 1461#ifdef CONFIG_BRIDGE_VLAN_FILTERING
1462 nla_total_size(sizeof(__be16)) + /* IFLA_BR_VLAN_PROTOCOL */
0f963b75 1463 nla_total_size(sizeof(u16)) + /* IFLA_BR_VLAN_DEFAULT_PVID */
6dada9b1 1464 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_ENABLED */
9163a0fc 1465 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_PER_PORT */
d2d427b3 1466#endif
7910228b 1467 nla_total_size(sizeof(u16)) + /* IFLA_BR_GROUP_FWD_MASK */
5127c81f 1468 nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_ROOT_ID */
7599a220 1469 nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_BRIDGE_ID */
8762ba68 1470 nla_total_size(sizeof(u16)) + /* IFLA_BR_ROOT_PORT */
684dd248 1471 nla_total_size(sizeof(u32)) + /* IFLA_BR_ROOT_PATH_COST */
b89e6bab
NA		 1472 nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE */
1473 nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE_DETECTED */
12a0faa3
ND		 1474 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_HELLO_TIMER */
1475 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TCN_TIMER */
1476 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TOPOLOGY_CHANGE_TIMER */
1477 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_GC_TIMER */
111189ab 1478 nla_total_size(ETH_ALEN) + /* IFLA_BR_GROUP_ADDR */
a9a6bc70
NA		 1479#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1480 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_ROUTER */
89126327 1481 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_SNOOPING */
295141d9 1482 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERY_USE_IFADDR */
ba062d7c 1483 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERIER */
1080ab95 1484 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_STATS_ENABLED */
b89e6bab
NA		 1485 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_ELASTICITY */
1486 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_MAX */
1487 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_LAST_MEMBER_CNT */
1488 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_STARTUP_QUERY_CNT */
12a0faa3
ND		 1489 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_LAST_MEMBER_INTVL */
1490 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_MEMBERSHIP_INTVL */
1491 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERIER_INTVL */
1492 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_INTVL */
1493 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_RESPONSE_INTVL */
1494 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_STARTUP_QUERY_INTVL */
5e923585 1495 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_IGMP_VERSION */
aa2ae3e7 1496 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_MLD_VERSION */
93870cc0
NA		 1497#endif
1498#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1499 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IPTABLES */
1500 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IP6TABLES */
1501 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_ARPTABLES */
a9a6bc70 1502#endif
a428afe8 1503 nla_total_size(sizeof(struct br_boolopt_multi)) + /* IFLA_BR_MULTI_BOOLOPT */
e5c3ea5c
JP		 1504 0;
1505}
1506
1507static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev)
1508{
1509 struct net_bridge *br = netdev_priv(brdev);
1510 u32 forward_delay = jiffies_to_clock_t(br->forward_delay);
1511 u32 hello_time = jiffies_to_clock_t(br->hello_time);
1512 u32 age_time = jiffies_to_clock_t(br->max_age);
af615762
JT		 1513 u32 ageing_time = jiffies_to_clock_t(br->ageing_time);
1514 u32 stp_enabled = br->stp_enabled;
1515 u16 priority = (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1];
1f51445a 1516 u8 vlan_enabled = br_vlan_enabled(br->dev);
a428afe8 1517 struct br_boolopt_multi bm;
4917a154
NA		 1518 u64 clockval;
1519
1520 clockval = br_timer_value(&br->hello_timer);
12a0faa3 1521 if (nla_put_u64_64bit(skb, IFLA_BR_HELLO_TIMER, clockval, IFLA_BR_PAD))
4917a154
NA		 1522 return -EMSGSIZE;
1523 clockval = br_timer_value(&br->tcn_timer);
12a0faa3 1524 if (nla_put_u64_64bit(skb, IFLA_BR_TCN_TIMER, clockval, IFLA_BR_PAD))
4917a154
NA		 1525 return -EMSGSIZE;
1526 clockval = br_timer_value(&br->topology_change_timer);
12a0faa3
ND		 1527 if (nla_put_u64_64bit(skb, IFLA_BR_TOPOLOGY_CHANGE_TIMER, clockval,
1528 IFLA_BR_PAD))
4917a154 1529 return -EMSGSIZE;
f7cdee8a 1530 clockval = br_timer_value(&br->gc_work.timer);
12a0faa3 1531 if (nla_put_u64_64bit(skb, IFLA_BR_GC_TIMER, clockval, IFLA_BR_PAD))
4917a154 1532 return -EMSGSIZE;
e5c3ea5c 1533
a428afe8 1534 br_boolopt_multi_get(br, &bm);
e5c3ea5c
JP		 1535 if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) ||
1536 nla_put_u32(skb, IFLA_BR_HELLO_TIME, hello_time) ||
af615762
JT		 1537 nla_put_u32(skb, IFLA_BR_MAX_AGE, age_time) ||
1538 nla_put_u32(skb, IFLA_BR_AGEING_TIME, ageing_time) ||
1539 nla_put_u32(skb, IFLA_BR_STP_STATE, stp_enabled) ||
a7854037 1540 nla_put_u16(skb, IFLA_BR_PRIORITY, priority) ||
7910228b 1541 nla_put_u8(skb, IFLA_BR_VLAN_FILTERING, vlan_enabled) ||
4917a154
NA		 1542 nla_put_u16(skb, IFLA_BR_GROUP_FWD_MASK, br->group_fwd_mask) ||
1543 nla_put(skb, IFLA_BR_BRIDGE_ID, sizeof(struct ifla_bridge_id),
1544 &br->bridge_id) ||
1545 nla_put(skb, IFLA_BR_ROOT_ID, sizeof(struct ifla_bridge_id),
1546 &br->designated_root) ||
684dd248 1547 nla_put_u16(skb, IFLA_BR_ROOT_PORT, br->root_port) ||
ed416309
NA		 1548 nla_put_u32(skb, IFLA_BR_ROOT_PATH_COST, br->root_path_cost) ||
1549 nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE, br->topology_change) ||
1550 nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE_DETECTED,
d76bd14e 1551 br->topology_change_detected) ||
a428afe8
NA		 1552 nla_put(skb, IFLA_BR_GROUP_ADDR, ETH_ALEN, br->group_addr) ||
1553 nla_put(skb, IFLA_BR_MULTI_BOOLOPT, sizeof(bm), &bm))
e5c3ea5c
JP		 1554 return -EMSGSIZE;
1555
d2d427b3 1556#ifdef CONFIG_BRIDGE_VLAN_FILTERING
0f963b75 1557 if (nla_put_be16(skb, IFLA_BR_VLAN_PROTOCOL, br->vlan_proto) ||
6dada9b1 1558 nla_put_u16(skb, IFLA_BR_VLAN_DEFAULT_PVID, br->default_pvid) ||
ae75767e 1559 nla_put_u8(skb, IFLA_BR_VLAN_STATS_ENABLED,
9163a0fc
NA		 1560 br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) ||
1561 nla_put_u8(skb, IFLA_BR_VLAN_STATS_PER_PORT,
600bea7d 1562 br_opt_get(br, BROPT_VLAN_STATS_PER_PORT)))
d2d427b3
TM		 1563 return -EMSGSIZE;
1564#endif
a9a6bc70 1565#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
89126327 1566 if (nla_put_u8(skb, IFLA_BR_MCAST_ROUTER, br->multicast_router) ||
13cefad2
NA		 1567 nla_put_u8(skb, IFLA_BR_MCAST_SNOOPING,
1568 br_opt_get(br, BROPT_MULTICAST_ENABLED)) ||
295141d9 1569 nla_put_u8(skb, IFLA_BR_MCAST_QUERY_USE_IFADDR,
675779ad
NA		 1570 br_opt_get(br, BROPT_MULTICAST_QUERY_USE_IFADDR)) ||
1571 nla_put_u8(skb, IFLA_BR_MCAST_QUERIER,
1572 br_opt_get(br, BROPT_MULTICAST_QUERIER)) ||
1080ab95 1573 nla_put_u8(skb, IFLA_BR_MCAST_STATS_ENABLED,
675779ad 1574 br_opt_get(br, BROPT_MULTICAST_STATS_ENABLED)) ||
cf332bca 1575 nla_put_u32(skb, IFLA_BR_MCAST_HASH_ELASTICITY, RHT_ELASTICITY) ||
79b859f5
NA		 1576 nla_put_u32(skb, IFLA_BR_MCAST_HASH_MAX, br->hash_max) ||
1577 nla_put_u32(skb, IFLA_BR_MCAST_LAST_MEMBER_CNT,
b89e6bab
NA		 1578 br->multicast_last_member_count) ||
1579 nla_put_u32(skb, IFLA_BR_MCAST_STARTUP_QUERY_CNT,
5e923585
NA		 1580 br->multicast_startup_query_count) ||
1581 nla_put_u8(skb, IFLA_BR_MCAST_IGMP_VERSION,
1582 br->multicast_igmp_version))
a9a6bc70 1583 return -EMSGSIZE;
aa2ae3e7
NA		 1584#if IS_ENABLED(CONFIG_IPV6)
1585 if (nla_put_u8(skb, IFLA_BR_MCAST_MLD_VERSION,
1586 br->multicast_mld_version))
1587 return -EMSGSIZE;
1588#endif
7e4df51e 1589 clockval = jiffies_to_clock_t(br->multicast_last_member_interval);
12a0faa3
ND		 1590 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_LAST_MEMBER_INTVL, clockval,
1591 IFLA_BR_PAD))
7e4df51e
NA		 1592 return -EMSGSIZE;
1593 clockval = jiffies_to_clock_t(br->multicast_membership_interval);
12a0faa3
ND		 1594 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_MEMBERSHIP_INTVL, clockval,
1595 IFLA_BR_PAD))
7e4df51e
NA		 1596 return -EMSGSIZE;
1597 clockval = jiffies_to_clock_t(br->multicast_querier_interval);
12a0faa3
ND		 1598 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERIER_INTVL, clockval,
1599 IFLA_BR_PAD))
7e4df51e
NA		 1600 return -EMSGSIZE;
1601 clockval = jiffies_to_clock_t(br->multicast_query_interval);
12a0faa3
ND		 1602 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_INTVL, clockval,
1603 IFLA_BR_PAD))
7e4df51e
NA		 1604 return -EMSGSIZE;
1605 clockval = jiffies_to_clock_t(br->multicast_query_response_interval);
12a0faa3
ND		 1606 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_RESPONSE_INTVL, clockval,
1607 IFLA_BR_PAD))
7e4df51e
NA		 1608 return -EMSGSIZE;
1609 clockval = jiffies_to_clock_t(br->multicast_startup_query_interval);
12a0faa3
ND		 1610 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_STARTUP_QUERY_INTVL, clockval,
1611 IFLA_BR_PAD))
7e4df51e 1612 return -EMSGSIZE;
a9a6bc70 1613#endif
93870cc0
NA		 1614#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1615 if (nla_put_u8(skb, IFLA_BR_NF_CALL_IPTABLES,
8df3510f 1616 br_opt_get(br, BROPT_NF_CALL_IPTABLES) ? 1 : 0) ||
93870cc0 1617 nla_put_u8(skb, IFLA_BR_NF_CALL_IP6TABLES,
8df3510f 1618 br_opt_get(br, BROPT_NF_CALL_IP6TABLES) ? 1 : 0) ||
93870cc0 1619 nla_put_u8(skb, IFLA_BR_NF_CALL_ARPTABLES,
8df3510f 1620 br_opt_get(br, BROPT_NF_CALL_ARPTABLES) ? 1 : 0))
93870cc0
NA		 1621 return -EMSGSIZE;
1622#endif
a9a6bc70 1623
e5c3ea5c
JP		 1624 return 0;
1625}
1626
d5ff8c41 1627static size_t br_get_linkxstats_size(const struct net_device *dev, int attr)
a60c0903 1628{
d5ff8c41 1629 struct net_bridge_port *p = NULL;
a60c0903
NA		 1630 struct net_bridge_vlan_group *vg;
1631 struct net_bridge_vlan *v;
d5ff8c41 1632 struct net_bridge *br;
a60c0903
NA		 1633 int numvls = 0;
1634
d5ff8c41
NA		 1635 switch (attr) {
1636 case IFLA_STATS_LINK_XSTATS:
1637 br = netdev_priv(dev);
1638 vg = br_vlan_group(br);
1639 break;
1640 case IFLA_STATS_LINK_XSTATS_SLAVE:
1641 p = br_port_get_rtnl(dev);
1642 if (!p)
1643 return 0;
1644 br = p->br;
1645 vg = nbp_vlan_group(p);
1646 break;
1647 default:
1648 return 0;
1649 }
1650
1080ab95
NA		 1651 if (vg) {
1652 /* we need to count all, even placeholder entries */
1653 list_for_each_entry(v, &vg->vlan_list, vlist)
1654 numvls++;
1655 }
a60c0903 1656
a60c0903 1657 return numvls * nla_total_size(sizeof(struct bridge_vlan_xstats)) +
1080ab95 1658 nla_total_size(sizeof(struct br_mcast_stats)) +
a60c0903
NA		 1659 nla_total_size(0);
1660}
1661
d5ff8c41
NA		 1662static int br_fill_linkxstats(struct sk_buff *skb,
1663 const struct net_device *dev,
1664 int *prividx, int attr)
80e73cc5 1665{
d5ff8c41
NA		 1666 struct nlattr *nla __maybe_unused;
1667 struct net_bridge_port *p = NULL;
1668 struct net_bridge_vlan_group *vg;
1669 struct net_bridge_vlan *v;
1670 struct net_bridge *br;
1671 struct nlattr *nest;
1672 int vl_idx = 0;
80e73cc5
NA		 1673
1674 switch (attr) {
1675 case IFLA_STATS_LINK_XSTATS:
d5ff8c41
NA		 1676 br = netdev_priv(dev);
1677 vg = br_vlan_group(br);
80e73cc5
NA		 1678 break;
1679 case IFLA_STATS_LINK_XSTATS_SLAVE:
d5ff8c41
NA		 1680 p = br_port_get_rtnl(dev);
1681 if (!p)
1682 return 0;
1683 br = p->br;
1684 vg = nbp_vlan_group(p);
80e73cc5 1685 break;
d5ff8c41
NA		 1686 default:
1687 return -EINVAL;
80e73cc5
NA		 1688 }
1689
ae0be8de 1690 nest = nla_nest_start_noflag(skb, LINK_XSTATS_TYPE_BRIDGE);
a60c0903
NA		 1691 if (!nest)
1692 return -EMSGSIZE;
a60c0903 1693
1080ab95 1694 if (vg) {
72f4af4e
NA		 1695 u16 pvid;
1696
1697 pvid = br_get_pvid(vg);
1080ab95
NA		 1698 list_for_each_entry(v, &vg->vlan_list, vlist) {
1699 struct bridge_vlan_xstats vxi;
281cc284 1700 struct pcpu_sw_netstats stats;
1080ab95
NA		 1701
1702 if (++vl_idx < *prividx)
1703 continue;
1704 memset(&vxi, 0, sizeof(vxi));
1705 vxi.vid = v->vid;
61ba1a2d 1706 vxi.flags = v->flags;
72f4af4e
NA		 1707 if (v->vid == pvid)
1708 vxi.flags |= BRIDGE_VLAN_INFO_PVID;
1080ab95
NA		 1709 br_vlan_get_stats(v, &stats);
1710 vxi.rx_bytes = stats.rx_bytes;
1711 vxi.rx_packets = stats.rx_packets;
1712 vxi.tx_bytes = stats.tx_bytes;
1713 vxi.tx_packets = stats.tx_packets;
1714
1715 if (nla_put(skb, BRIDGE_XSTATS_VLAN, sizeof(vxi), &vxi))
1716 goto nla_put_failure;
1717 }
1718 }
1719
1720#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1721 if (++vl_idx >= *prividx) {
1722 nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_MCAST,
1723 sizeof(struct br_mcast_stats),
1724 BRIDGE_XSTATS_PAD);
1725 if (!nla)
a60c0903 1726 goto nla_put_failure;
d5ff8c41 1727 br_multicast_get_stats(br, p, nla_data(nla));
a60c0903 1728 }
1080ab95 1729#endif
de179966
VD		 1730
1731 if (p) {
1732 nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_STP,
1733 sizeof(p->stp_xstats),
1734 BRIDGE_XSTATS_PAD);
1735 if (!nla)
1736 goto nla_put_failure;
1737
1738 spin_lock_bh(&br->lock);
1739 memcpy(nla_data(nla), &p->stp_xstats, sizeof(p->stp_xstats));
1740 spin_unlock_bh(&br->lock);
1741 }
1742
a60c0903
NA		 1743 nla_nest_end(skb, nest);
1744 *prividx = 0;
1080ab95 1745
a60c0903
NA		 1746 return 0;
1747
1748nla_put_failure:
1749 nla_nest_end(skb, nest);
1750 *prividx = vl_idx;
1751
1752 return -EMSGSIZE;
1753}
fed0a159 1754
207895fd 1755static struct rtnl_af_ops br_af_ops __read_mostly = {
6cbdceeb 1756 .family = AF_BRIDGE,
b1974ed0 1757 .get_link_af_size = br_get_link_af_size_filtered,
6cbdceeb
VY		 1758};
1759
149ddd83 1760struct rtnl_link_ops br_link_ops __read_mostly = {
ced8283f
JP		 1761 .kind = "bridge",
1762 .priv_size = sizeof(struct net_bridge),
1763 .setup = br_dev_setup,
eb4cb851 1764 .maxtype = IFLA_BR_MAX,
13323516 1765 .policy = br_policy,
ced8283f
JP		 1766 .validate = br_validate,
1767 .newlink = br_dev_newlink,
13323516 1768 .changelink = br_changelink,
ced8283f 1769 .dellink = br_dev_delete,
e5c3ea5c
JP		 1770 .get_size = br_get_size,
1771 .fill_info = br_fill_info,
a60c0903
NA		 1772 .fill_linkxstats = br_fill_linkxstats,
1773 .get_linkxstats_size = br_get_linkxstats_size,
3ac636b8
JP		 1774
1775 .slave_maxtype = IFLA_BRPORT_MAX,
1776 .slave_policy = br_port_policy,
1777 .slave_changelink = br_port_slave_changelink,
ced8283f
JP		 1778 .get_slave_size = br_port_get_slave_size,
1779 .fill_slave_info = br_port_fill_slave_info,
bb900b27 1780};
11dc1f36 1781
32fe21c0 1782int __init br_netlink_init(void)
11dc1f36 1783{
3ec8e9f0
VY		 1784 int err;
1785
1786 br_mdb_init();
8dcea187 1787 br_vlan_rtnl_init();
3678a9d8 1788 rtnl_af_register(&br_af_ops);
3ec8e9f0 1789
6cbdceeb
VY		 1790 err = rtnl_link_register(&br_link_ops);
1791 if (err)
1792 goto out_af;
1793
3ec8e9f0 1794 return 0;
6cbdceeb
VY		 1795
1796out_af:
1797 rtnl_af_unregister(&br_af_ops);
3ec8e9f0
VY		 1798 br_mdb_uninit();
1799 return err;
11dc1f36
SH		 1800}
1801
34666d46 1802void br_netlink_fini(void)
11dc1f36 1803{
3ec8e9f0 1804 br_mdb_uninit();
8dcea187 1805 br_vlan_rtnl_uninit();
6cbdceeb 1806 rtnl_af_unregister(&br_af_ops);
bb900b27 1807 rtnl_link_unregister(&br_link_ops);
11dc1f36 1808}
Linux 6.x block layer and io_uring tree(s)