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Merge branch 'signal-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux-block.git] / net / batman-adv / netlink.c
CommitLineData
7db7d9f3 1// SPDX-License-Identifier: GPL-2.0
68e039f9 2/* Copyright (C) 2016-2020 B.A.T.M.A.N. contributors:
09748a22
MS		 3 *
4 * Matthias Schiffer
09748a22
MS		 5 */
6
7#include "netlink.h"
8#include "main.h"
9
f32ed4b5 10#include <linux/atomic.h>
c4a7a8d9 11#include <linux/bitops.h>
5c55a40f 12#include <linux/bug.h>
8dad6f0d 13#include <linux/byteorder/generic.h>
9bcb94c8 14#include <linux/cache.h>
c4a7a8d9 15#include <linux/err.h>
5da0aef5 16#include <linux/errno.h>
9bcb94c8 17#include <linux/export.h>
09748a22 18#include <linux/genetlink.h>
b92b94ac 19#include <linux/gfp.h>
5da0aef5 20#include <linux/if_ether.h>
49e7e37c 21#include <linux/if_vlan.h>
09748a22 22#include <linux/init.h>
9bcb94c8 23#include <linux/kernel.h>
e1928752 24#include <linux/limits.h>
fb69be69 25#include <linux/list.h>
fcd193e1 26#include <linux/minmax.h>
5da0aef5
MS		 27#include <linux/netdevice.h>
28#include <linux/netlink.h>
09748a22 29#include <linux/printk.h>
fb69be69 30#include <linux/rtnetlink.h>
b60620cf 31#include <linux/skbuff.h>
5da0aef5 32#include <linux/stddef.h>
33a3bb4a 33#include <linux/types.h>
09748a22 34#include <net/genetlink.h>
68a600de 35#include <net/net_namespace.h>
5da0aef5 36#include <net/netlink.h>
b60620cf 37#include <net/sock.h>
fec149f5 38#include <uapi/linux/batadv_packet.h>
09748a22
MS		 39#include <uapi/linux/batman_adv.h>
40
07a3061e 41#include "bat_algo.h"
04f3f5bf 42#include "bridge_loop_avoidance.h"
41aeefcc 43#include "distributed-arp-table.h"
d7129daf 44#include "gateway_client.h"
e2d0d35b 45#include "gateway_common.h"
5da0aef5 46#include "hard-interface.h"
b85bd091 47#include "log.h"
53dd9a68 48#include "multicast.h"
6c57cde6 49#include "network-coding.h"
85cf8c85 50#include "originator.h"
5da0aef5 51#include "soft-interface.h"
33a3bb4a 52#include "tp_meter.h"
d34f0550 53#include "translation-table.h"
5da0aef5 54
489111e5 55struct genl_family batadv_netlink_family;
09748a22 56
33a3bb4a
AQ		 57/* multicast groups */
58enum batadv_netlink_multicast_groups {
60040513 59 BATADV_NL_MCGRP_CONFIG,
33a3bb4a
AQ		 60 BATADV_NL_MCGRP_TPMETER,
61};
62
c4a7a8d9
SE		 63/**
64 * enum batadv_genl_ops_flags - flags for genl_ops's internal_flags
65 */
66enum batadv_genl_ops_flags {
67 /**
68 * @BATADV_FLAG_NEED_MESH: request requires valid soft interface in
69 * attribute BATADV_ATTR_MESH_IFINDEX and expects a pointer to it to be
70 * saved in info->user_ptr[0]
71 */
72 BATADV_FLAG_NEED_MESH = BIT(0),
5c55a40f
SE		 73
74 /**
75 * @BATADV_FLAG_NEED_HARDIF: request requires valid hard interface in
76 * attribute BATADV_ATTR_HARD_IFINDEX and expects a pointer to it to be
77 * saved in info->user_ptr[1]
78 */
79 BATADV_FLAG_NEED_HARDIF = BIT(1),
49e7e37c
SE		 80
81 /**
82 * @BATADV_FLAG_NEED_VLAN: request requires valid vlan in
83 * attribute BATADV_ATTR_VLANID and expects a pointer to it to be
84 * saved in info->user_ptr[1]
85 */
86 BATADV_FLAG_NEED_VLAN = BIT(2),
c4a7a8d9
SE		 87};
88
deeb91f5 89static const struct genl_multicast_group batadv_netlink_mcgrps[] = {
60040513 90 [BATADV_NL_MCGRP_CONFIG] = { .name = BATADV_NL_MCAST_GROUP_CONFIG },
33a3bb4a
AQ		 91 [BATADV_NL_MCGRP_TPMETER] = { .name = BATADV_NL_MCAST_GROUP_TPMETER },
92};
93
deeb91f5 94static const struct nla_policy batadv_netlink_policy[NUM_BATADV_ATTR] = {
41aeefcc
LL		 95 [BATADV_ATTR_VERSION] = { .type = NLA_STRING },
96 [BATADV_ATTR_ALGO_NAME] = { .type = NLA_STRING },
97 [BATADV_ATTR_MESH_IFINDEX] = { .type = NLA_U32 },
98 [BATADV_ATTR_MESH_IFNAME] = { .type = NLA_STRING },
99 [BATADV_ATTR_MESH_ADDRESS] = { .len = ETH_ALEN },
100 [BATADV_ATTR_HARD_IFINDEX] = { .type = NLA_U32 },
101 [BATADV_ATTR_HARD_IFNAME] = { .type = NLA_STRING },
102 [BATADV_ATTR_HARD_ADDRESS] = { .len = ETH_ALEN },
103 [BATADV_ATTR_ORIG_ADDRESS] = { .len = ETH_ALEN },
104 [BATADV_ATTR_TPMETER_RESULT] = { .type = NLA_U8 },
105 [BATADV_ATTR_TPMETER_TEST_TIME] = { .type = NLA_U32 },
106 [BATADV_ATTR_TPMETER_BYTES] = { .type = NLA_U64 },
107 [BATADV_ATTR_TPMETER_COOKIE] = { .type = NLA_U32 },
108 [BATADV_ATTR_ACTIVE] = { .type = NLA_FLAG },
109 [BATADV_ATTR_TT_ADDRESS] = { .len = ETH_ALEN },
110 [BATADV_ATTR_TT_TTVN] = { .type = NLA_U8 },
111 [BATADV_ATTR_TT_LAST_TTVN] = { .type = NLA_U8 },
112 [BATADV_ATTR_TT_CRC32] = { .type = NLA_U32 },
113 [BATADV_ATTR_TT_VID] = { .type = NLA_U16 },
114 [BATADV_ATTR_TT_FLAGS] = { .type = NLA_U32 },
115 [BATADV_ATTR_FLAG_BEST] = { .type = NLA_FLAG },
116 [BATADV_ATTR_LAST_SEEN_MSECS] = { .type = NLA_U32 },
117 [BATADV_ATTR_NEIGH_ADDRESS] = { .len = ETH_ALEN },
118 [BATADV_ATTR_TQ] = { .type = NLA_U8 },
119 [BATADV_ATTR_THROUGHPUT] = { .type = NLA_U32 },
120 [BATADV_ATTR_BANDWIDTH_UP] = { .type = NLA_U32 },
121 [BATADV_ATTR_BANDWIDTH_DOWN] = { .type = NLA_U32 },
122 [BATADV_ATTR_ROUTER] = { .len = ETH_ALEN },
123 [BATADV_ATTR_BLA_OWN] = { .type = NLA_FLAG },
124 [BATADV_ATTR_BLA_ADDRESS] = { .len = ETH_ALEN },
125 [BATADV_ATTR_BLA_VID] = { .type = NLA_U16 },
126 [BATADV_ATTR_BLA_BACKBONE] = { .len = ETH_ALEN },
127 [BATADV_ATTR_BLA_CRC] = { .type = NLA_U16 },
128 [BATADV_ATTR_DAT_CACHE_IP4ADDRESS] = { .type = NLA_U32 },
129 [BATADV_ATTR_DAT_CACHE_HWADDRESS] = { .len = ETH_ALEN },
130 [BATADV_ATTR_DAT_CACHE_VID] = { .type = NLA_U16 },
53dd9a68
LL		 131 [BATADV_ATTR_MCAST_FLAGS] = { .type = NLA_U32 },
132 [BATADV_ATTR_MCAST_FLAGS_PRIV] = { .type = NLA_U32 },
49e7e37c 133 [BATADV_ATTR_VLANID] = { .type = NLA_U16 },
9ab4cee5 134 [BATADV_ATTR_AGGREGATED_OGMS_ENABLED] = { .type = NLA_U8 },
e43d16b8
SE		 135 [BATADV_ATTR_AP_ISOLATION_ENABLED] = { .type = NLA_U8 },
136 [BATADV_ATTR_ISOLATION_MARK] = { .type = NLA_U32 },
137 [BATADV_ATTR_ISOLATION_MASK] = { .type = NLA_U32 },
d7e52506 138 [BATADV_ATTR_BONDING_ENABLED] = { .type = NLA_U8 },
43ff6105 139 [BATADV_ATTR_BRIDGE_LOOP_AVOIDANCE_ENABLED] = { .type = NLA_U8 },
a1c8de80 140 [BATADV_ATTR_DISTRIBUTED_ARP_TABLE_ENABLED] = { .type = NLA_U8 },
3e15b06e 141 [BATADV_ATTR_FRAGMENTATION_ENABLED] = { .type = NLA_U8 },
e2d0d35b
SE		 142 [BATADV_ATTR_GW_BANDWIDTH_DOWN] = { .type = NLA_U32 },
143 [BATADV_ATTR_GW_BANDWIDTH_UP] = { .type = NLA_U32 },
144 [BATADV_ATTR_GW_MODE] = { .type = NLA_U8 },
145 [BATADV_ATTR_GW_SEL_CLASS] = { .type = NLA_U32 },
bfc7f1be 146 [BATADV_ATTR_HOP_PENALTY] = { .type = NLA_U8 },
b85bd091 147 [BATADV_ATTR_LOG_LEVEL] = { .type = NLA_U32 },
f75b56bc 148 [BATADV_ATTR_MULTICAST_FORCEFLOOD_ENABLED] = { .type = NLA_U8 },
32e72744 149 [BATADV_ATTR_MULTICAST_FANOUT] = { .type = NLA_U32 },
6c57cde6 150 [BATADV_ATTR_NETWORK_CODING_ENABLED] = { .type = NLA_U8 },
7b751b39 151 [BATADV_ATTR_ORIG_INTERVAL] = { .type = NLA_U32 },
a1080082 152 [BATADV_ATTR_ELP_INTERVAL] = { .type = NLA_U32 },
9a182242 153 [BATADV_ATTR_THROUGHPUT_OVERRIDE] = { .type = NLA_U32 },
5da0aef5
MS		 154};
155
b60620cf 156/**
7e9a8c2c 157 * batadv_netlink_get_ifindex() - Extract an interface index from a message
b60620cf
MS		 158 * @nlh: Message header
159 * @attrtype: Attribute which holds an interface index
160 *
161 * Return: interface index, or 0.
162 */
d34f0550 163int
b60620cf
MS		 164batadv_netlink_get_ifindex(const struct nlmsghdr *nlh, int attrtype)
165{
166 struct nlattr *attr = nlmsg_find_attr(nlh, GENL_HDRLEN, attrtype);
167
3ee1bb7a 168 return (attr && nla_len(attr) == sizeof(u32)) ? nla_get_u32(attr) : 0;
b60620cf
MS		 169}
170
e43d16b8
SE		 171/**
172 * batadv_netlink_mesh_fill_ap_isolation() - Add ap_isolation softif attribute
173 * @msg: Netlink message to dump into
174 * @bat_priv: the bat priv with all the soft interface information
175 *
176 * Return: 0 on success or negative error number in case of failure
177 */
178static int batadv_netlink_mesh_fill_ap_isolation(struct sk_buff *msg,
179 struct batadv_priv *bat_priv)
180{
181 struct batadv_softif_vlan *vlan;
182 u8 ap_isolation;
183
184 vlan = batadv_softif_vlan_get(bat_priv, BATADV_NO_FLAGS);
185 if (!vlan)
186 return 0;
187
188 ap_isolation = atomic_read(&vlan->ap_isolation);
189 batadv_softif_vlan_put(vlan);
190
191 return nla_put_u8(msg, BATADV_ATTR_AP_ISOLATION_ENABLED,
192 !!ap_isolation);
193}
194
195/**
196 * batadv_option_set_ap_isolation() - Set ap_isolation from genl msg
197 * @attr: parsed BATADV_ATTR_AP_ISOLATION_ENABLED attribute
198 * @bat_priv: the bat priv with all the soft interface information
199 *
200 * Return: 0 on success or negative error number in case of failure
201 */
202static int batadv_netlink_set_mesh_ap_isolation(struct nlattr *attr,
203 struct batadv_priv *bat_priv)
204{
205 struct batadv_softif_vlan *vlan;
206
207 vlan = batadv_softif_vlan_get(bat_priv, BATADV_NO_FLAGS);
208 if (!vlan)
209 return -ENOENT;
210
211 atomic_set(&vlan->ap_isolation, !!nla_get_u8(attr));
212 batadv_softif_vlan_put(vlan);
213
214 return 0;
215}
216
5da0aef5 217/**
60040513
SE		 218 * batadv_netlink_mesh_fill() - Fill message with mesh attributes
219 * @msg: Netlink message to dump into
220 * @bat_priv: the bat priv with all the soft interface information
221 * @cmd: type of message to generate
222 * @portid: Port making netlink request
223 * @seq: sequence number for message
224 * @flags: Additional flags for message
5da0aef5 225 *
60040513 226 * Return: 0 on success or negative error number in case of failure
5da0aef5 227 */
60040513
SE		 228static int batadv_netlink_mesh_fill(struct sk_buff *msg,
229 struct batadv_priv *bat_priv,
230 enum batadv_nl_commands cmd,
231 u32 portid, u32 seq, int flags)
5da0aef5 232{
60040513 233 struct net_device *soft_iface = bat_priv->soft_iface;
5da0aef5
MS		 234 struct batadv_hard_iface *primary_if = NULL;
235 struct net_device *hard_iface;
60040513
SE		 236 void *hdr;
237
238 hdr = genlmsg_put(msg, portid, seq, &batadv_netlink_family, flags, cmd);
239 if (!hdr)
240 return -ENOBUFS;
5da0aef5
MS		 241
242 if (nla_put_string(msg, BATADV_ATTR_VERSION, BATADV_SOURCE_VERSION) ||
243 nla_put_string(msg, BATADV_ATTR_ALGO_NAME,
29824a55 244 bat_priv->algo_ops->name) ||
5da0aef5
MS		 245 nla_put_u32(msg, BATADV_ATTR_MESH_IFINDEX, soft_iface->ifindex) ||
246 nla_put_string(msg, BATADV_ATTR_MESH_IFNAME, soft_iface->name) ||
247 nla_put(msg, BATADV_ATTR_MESH_ADDRESS, ETH_ALEN,
f32ed4b5
SE		 248 soft_iface->dev_addr) ||
249 nla_put_u8(msg, BATADV_ATTR_TT_TTVN,
250 (u8)atomic_read(&bat_priv->tt.vn)))
60040513 251 goto nla_put_failure;
5da0aef5 252
8dad6f0d
SE		 253#ifdef CONFIG_BATMAN_ADV_BLA
254 if (nla_put_u16(msg, BATADV_ATTR_BLA_CRC,
255 ntohs(bat_priv->bla.claim_dest.group)))
60040513 256 goto nla_put_failure;
8dad6f0d
SE		 257#endif
258
53dd9a68 259 if (batadv_mcast_mesh_info_put(msg, bat_priv))
60040513 260 goto nla_put_failure;
53dd9a68 261
5da0aef5
MS		 262 primary_if = batadv_primary_if_get_selected(bat_priv);
263 if (primary_if && primary_if->if_status == BATADV_IF_ACTIVE) {
264 hard_iface = primary_if->net_dev;
265
266 if (nla_put_u32(msg, BATADV_ATTR_HARD_IFINDEX,
267 hard_iface->ifindex) ||
268 nla_put_string(msg, BATADV_ATTR_HARD_IFNAME,
269 hard_iface->name) ||
270 nla_put(msg, BATADV_ATTR_HARD_ADDRESS, ETH_ALEN,
271 hard_iface->dev_addr))
60040513 272 goto nla_put_failure;
5da0aef5
MS		 273 }
274
9ab4cee5
SE		 275 if (nla_put_u8(msg, BATADV_ATTR_AGGREGATED_OGMS_ENABLED,
276 !!atomic_read(&bat_priv->aggregated_ogms)))
277 goto nla_put_failure;
278
e43d16b8
SE		 279 if (batadv_netlink_mesh_fill_ap_isolation(msg, bat_priv))
280 goto nla_put_failure;
281
282 if (nla_put_u32(msg, BATADV_ATTR_ISOLATION_MARK,
283 bat_priv->isolation_mark))
284 goto nla_put_failure;
285
286 if (nla_put_u32(msg, BATADV_ATTR_ISOLATION_MASK,
287 bat_priv->isolation_mark_mask))
288 goto nla_put_failure;
289
d7e52506
SE		 290 if (nla_put_u8(msg, BATADV_ATTR_BONDING_ENABLED,
291 !!atomic_read(&bat_priv->bonding)))
292 goto nla_put_failure;
293
43ff6105
SE		 294#ifdef CONFIG_BATMAN_ADV_BLA
295 if (nla_put_u8(msg, BATADV_ATTR_BRIDGE_LOOP_AVOIDANCE_ENABLED,
296 !!atomic_read(&bat_priv->bridge_loop_avoidance)))
297 goto nla_put_failure;
298#endif /* CONFIG_BATMAN_ADV_BLA */
299
a1c8de80
SE		 300#ifdef CONFIG_BATMAN_ADV_DAT
301 if (nla_put_u8(msg, BATADV_ATTR_DISTRIBUTED_ARP_TABLE_ENABLED,
302 !!atomic_read(&bat_priv->distributed_arp_table)))
303 goto nla_put_failure;
304#endif /* CONFIG_BATMAN_ADV_DAT */
305
3e15b06e
SE		 306 if (nla_put_u8(msg, BATADV_ATTR_FRAGMENTATION_ENABLED,
307 !!atomic_read(&bat_priv->fragmentation)))
308 goto nla_put_failure;
309
e2d0d35b
SE		 310 if (nla_put_u32(msg, BATADV_ATTR_GW_BANDWIDTH_DOWN,
311 atomic_read(&bat_priv->gw.bandwidth_down)))
312 goto nla_put_failure;
313
314 if (nla_put_u32(msg, BATADV_ATTR_GW_BANDWIDTH_UP,
315 atomic_read(&bat_priv->gw.bandwidth_up)))
316 goto nla_put_failure;
317
318 if (nla_put_u8(msg, BATADV_ATTR_GW_MODE,
319 atomic_read(&bat_priv->gw.mode)))
320 goto nla_put_failure;
321
322 if (bat_priv->algo_ops->gw.get_best_gw_node &&
323 bat_priv->algo_ops->gw.is_eligible) {
324 /* GW selection class is not available if the routing algorithm
325 * in use does not implement the GW API
326 */
327 if (nla_put_u32(msg, BATADV_ATTR_GW_SEL_CLASS,
328 atomic_read(&bat_priv->gw.sel_class)))
329 goto nla_put_failure;
330 }
331
bfc7f1be
SE		 332 if (nla_put_u8(msg, BATADV_ATTR_HOP_PENALTY,
333 atomic_read(&bat_priv->hop_penalty)))
334 goto nla_put_failure;
335
b85bd091
SE		 336#ifdef CONFIG_BATMAN_ADV_DEBUG
337 if (nla_put_u32(msg, BATADV_ATTR_LOG_LEVEL,
338 atomic_read(&bat_priv->log_level)))
339 goto nla_put_failure;
340#endif /* CONFIG_BATMAN_ADV_DEBUG */
341
f75b56bc
SE		 342#ifdef CONFIG_BATMAN_ADV_MCAST
343 if (nla_put_u8(msg, BATADV_ATTR_MULTICAST_FORCEFLOOD_ENABLED,
344 !atomic_read(&bat_priv->multicast_mode)))
345 goto nla_put_failure;
32e72744
LL		 346
347 if (nla_put_u32(msg, BATADV_ATTR_MULTICAST_FANOUT,
348 atomic_read(&bat_priv->multicast_fanout)))
349 goto nla_put_failure;
f75b56bc
SE		 350#endif /* CONFIG_BATMAN_ADV_MCAST */
351
6c57cde6
SE		 352#ifdef CONFIG_BATMAN_ADV_NC
353 if (nla_put_u8(msg, BATADV_ATTR_NETWORK_CODING_ENABLED,
354 !!atomic_read(&bat_priv->network_coding)))
355 goto nla_put_failure;
356#endif /* CONFIG_BATMAN_ADV_NC */
357
7b751b39
SE		 358 if (nla_put_u32(msg, BATADV_ATTR_ORIG_INTERVAL,
359 atomic_read(&bat_priv->orig_interval)))
360 goto nla_put_failure;
361
60040513
SE		 362 if (primary_if)
363 batadv_hardif_put(primary_if);
5da0aef5 364
60040513
SE		 365 genlmsg_end(msg, hdr);
366 return 0;
367
368nla_put_failure:
5da0aef5
MS		 369 if (primary_if)
370 batadv_hardif_put(primary_if);
371
60040513
SE		 372 genlmsg_cancel(msg, hdr);
373 return -EMSGSIZE;
5da0aef5
MS		 374}
375
376/**
60040513
SE		 377 * batadv_netlink_notify_mesh() - send softif attributes to listener
378 * @bat_priv: the bat priv with all the soft interface information
5da0aef5
MS		 379 *
380 * Return: 0 on success, < 0 on error
381 */
7e6f461e 382int batadv_netlink_notify_mesh(struct batadv_priv *bat_priv)
5da0aef5 383{
60040513 384 struct sk_buff *msg;
5da0aef5
MS		 385 int ret;
386
60040513
SE		 387 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
388 if (!msg)
389 return -ENOMEM;
5da0aef5 390
60040513
SE		 391 ret = batadv_netlink_mesh_fill(msg, bat_priv, BATADV_CMD_SET_MESH,
392 0, 0, 0);
393 if (ret < 0) {
394 nlmsg_free(msg);
395 return ret;
5da0aef5
MS		 396 }
397
60040513
SE		 398 genlmsg_multicast_netns(&batadv_netlink_family,
399 dev_net(bat_priv->soft_iface), msg, 0,
400 BATADV_NL_MCGRP_CONFIG, GFP_KERNEL);
5da0aef5 401
60040513
SE		 402 return 0;
403}
5da0aef5 404
60040513
SE		 405/**
406 * batadv_netlink_get_mesh() - Get softif attributes
407 * @skb: Netlink message with request data
408 * @info: receiver information
409 *
410 * Return: 0 on success or negative error number in case of failure
411 */
412static int batadv_netlink_get_mesh(struct sk_buff *skb, struct genl_info *info)
413{
414 struct batadv_priv *bat_priv = info->user_ptr[0];
415 struct sk_buff *msg;
416 int ret;
5da0aef5 417
60040513
SE		 418 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
419 if (!msg)
420 return -ENOMEM;
5da0aef5 421
60040513
SE		 422 ret = batadv_netlink_mesh_fill(msg, bat_priv, BATADV_CMD_GET_MESH,
423 info->snd_portid, info->snd_seq, 0);
424 if (ret < 0) {
425 nlmsg_free(msg);
5da0aef5
MS		 426 return ret;
427 }
428
60040513
SE		 429 ret = genlmsg_reply(msg, info);
430
431 return ret;
432}
433
434/**
435 * batadv_netlink_set_mesh() - Set softif attributes
436 * @skb: Netlink message with request data
437 * @info: receiver information
438 *
439 * Return: 0 on success or negative error number in case of failure
440 */
441static int batadv_netlink_set_mesh(struct sk_buff *skb, struct genl_info *info)
442{
443 struct batadv_priv *bat_priv = info->user_ptr[0];
9ab4cee5
SE		 444 struct nlattr *attr;
445
446 if (info->attrs[BATADV_ATTR_AGGREGATED_OGMS_ENABLED]) {
447 attr = info->attrs[BATADV_ATTR_AGGREGATED_OGMS_ENABLED];
448
449 atomic_set(&bat_priv->aggregated_ogms, !!nla_get_u8(attr));
450 }
60040513 451
e43d16b8
SE		 452 if (info->attrs[BATADV_ATTR_AP_ISOLATION_ENABLED]) {
453 attr = info->attrs[BATADV_ATTR_AP_ISOLATION_ENABLED];
454
455 batadv_netlink_set_mesh_ap_isolation(attr, bat_priv);
456 }
457
458 if (info->attrs[BATADV_ATTR_ISOLATION_MARK]) {
459 attr = info->attrs[BATADV_ATTR_ISOLATION_MARK];
460
461 bat_priv->isolation_mark = nla_get_u32(attr);
462 }
463
464 if (info->attrs[BATADV_ATTR_ISOLATION_MASK]) {
465 attr = info->attrs[BATADV_ATTR_ISOLATION_MASK];
466
467 bat_priv->isolation_mark_mask = nla_get_u32(attr);
468 }
469
d7e52506
SE		 470 if (info->attrs[BATADV_ATTR_BONDING_ENABLED]) {
471 attr = info->attrs[BATADV_ATTR_BONDING_ENABLED];
472
473 atomic_set(&bat_priv->bonding, !!nla_get_u8(attr));
474 }
475
43ff6105
SE		 476#ifdef CONFIG_BATMAN_ADV_BLA
477 if (info->attrs[BATADV_ATTR_BRIDGE_LOOP_AVOIDANCE_ENABLED]) {
478 attr = info->attrs[BATADV_ATTR_BRIDGE_LOOP_AVOIDANCE_ENABLED];
479
480 atomic_set(&bat_priv->bridge_loop_avoidance,
481 !!nla_get_u8(attr));
482 batadv_bla_status_update(bat_priv->soft_iface);
483 }
484#endif /* CONFIG_BATMAN_ADV_BLA */
485
a1c8de80
SE		 486#ifdef CONFIG_BATMAN_ADV_DAT
487 if (info->attrs[BATADV_ATTR_DISTRIBUTED_ARP_TABLE_ENABLED]) {
488 attr = info->attrs[BATADV_ATTR_DISTRIBUTED_ARP_TABLE_ENABLED];
489
490 atomic_set(&bat_priv->distributed_arp_table,
491 !!nla_get_u8(attr));
492 batadv_dat_status_update(bat_priv->soft_iface);
493 }
494#endif /* CONFIG_BATMAN_ADV_DAT */
495
3e15b06e
SE		 496 if (info->attrs[BATADV_ATTR_FRAGMENTATION_ENABLED]) {
497 attr = info->attrs[BATADV_ATTR_FRAGMENTATION_ENABLED];
498
499 atomic_set(&bat_priv->fragmentation, !!nla_get_u8(attr));
500 batadv_update_min_mtu(bat_priv->soft_iface);
501 }
502
e2d0d35b
SE		 503 if (info->attrs[BATADV_ATTR_GW_BANDWIDTH_DOWN]) {
504 attr = info->attrs[BATADV_ATTR_GW_BANDWIDTH_DOWN];
505
506 atomic_set(&bat_priv->gw.bandwidth_down, nla_get_u32(attr));
507 batadv_gw_tvlv_container_update(bat_priv);
508 }
509
510 if (info->attrs[BATADV_ATTR_GW_BANDWIDTH_UP]) {
511 attr = info->attrs[BATADV_ATTR_GW_BANDWIDTH_UP];
512
513 atomic_set(&bat_priv->gw.bandwidth_up, nla_get_u32(attr));
514 batadv_gw_tvlv_container_update(bat_priv);
515 }
516
517 if (info->attrs[BATADV_ATTR_GW_MODE]) {
518 u8 gw_mode;
519
520 attr = info->attrs[BATADV_ATTR_GW_MODE];
521 gw_mode = nla_get_u8(attr);
522
523 if (gw_mode <= BATADV_GW_MODE_SERVER) {
524 /* Invoking batadv_gw_reselect() is not enough to really
525 * de-select the current GW. It will only instruct the
526 * gateway client code to perform a re-election the next
527 * time that this is needed.
528 *
529 * When gw client mode is being switched off the current
530 * GW must be de-selected explicitly otherwise no GW_ADD
531 * uevent is thrown on client mode re-activation. This
532 * is operation is performed in
533 * batadv_gw_check_client_stop().
534 */
535 batadv_gw_reselect(bat_priv);
536
537 /* always call batadv_gw_check_client_stop() before
538 * changing the gateway state
539 */
540 batadv_gw_check_client_stop(bat_priv);
541 atomic_set(&bat_priv->gw.mode, gw_mode);
542 batadv_gw_tvlv_container_update(bat_priv);
543 }
544 }
545
546 if (info->attrs[BATADV_ATTR_GW_SEL_CLASS] &&
547 bat_priv->algo_ops->gw.get_best_gw_node &&
548 bat_priv->algo_ops->gw.is_eligible) {
549 /* setting the GW selection class is allowed only if the routing
550 * algorithm in use implements the GW API
551 */
552
553 u32 sel_class_max = 0xffffffffu;
554 u32 sel_class;
555
556 attr = info->attrs[BATADV_ATTR_GW_SEL_CLASS];
557 sel_class = nla_get_u32(attr);
558
559 if (!bat_priv->algo_ops->gw.store_sel_class)
560 sel_class_max = BATADV_TQ_MAX_VALUE;
561
562 if (sel_class >= 1 && sel_class <= sel_class_max) {
563 atomic_set(&bat_priv->gw.sel_class, sel_class);
564 batadv_gw_reselect(bat_priv);
565 }
566 }
567
bfc7f1be
SE		 568 if (info->attrs[BATADV_ATTR_HOP_PENALTY]) {
569 attr = info->attrs[BATADV_ATTR_HOP_PENALTY];
570
571 atomic_set(&bat_priv->hop_penalty, nla_get_u8(attr));
572 }
573
b85bd091
SE		 574#ifdef CONFIG_BATMAN_ADV_DEBUG
575 if (info->attrs[BATADV_ATTR_LOG_LEVEL]) {
576 attr = info->attrs[BATADV_ATTR_LOG_LEVEL];
577
578 atomic_set(&bat_priv->log_level,
579 nla_get_u32(attr) & BATADV_DBG_ALL);
580 }
581#endif /* CONFIG_BATMAN_ADV_DEBUG */
582
f75b56bc
SE		 583#ifdef CONFIG_BATMAN_ADV_MCAST
584 if (info->attrs[BATADV_ATTR_MULTICAST_FORCEFLOOD_ENABLED]) {
585 attr = info->attrs[BATADV_ATTR_MULTICAST_FORCEFLOOD_ENABLED];
586
587 atomic_set(&bat_priv->multicast_mode, !nla_get_u8(attr));
588 }
32e72744
LL		 589
590 if (info->attrs[BATADV_ATTR_MULTICAST_FANOUT]) {
591 attr = info->attrs[BATADV_ATTR_MULTICAST_FANOUT];
592
593 atomic_set(&bat_priv->multicast_fanout, nla_get_u32(attr));
594 }
f75b56bc
SE		 595#endif /* CONFIG_BATMAN_ADV_MCAST */
596
6c57cde6
SE		 597#ifdef CONFIG_BATMAN_ADV_NC
598 if (info->attrs[BATADV_ATTR_NETWORK_CODING_ENABLED]) {
599 attr = info->attrs[BATADV_ATTR_NETWORK_CODING_ENABLED];
600
601 atomic_set(&bat_priv->network_coding, !!nla_get_u8(attr));
602 batadv_nc_status_update(bat_priv->soft_iface);
603 }
604#endif /* CONFIG_BATMAN_ADV_NC */
605
7b751b39
SE		 606 if (info->attrs[BATADV_ATTR_ORIG_INTERVAL]) {
607 u32 orig_interval;
608
609 attr = info->attrs[BATADV_ATTR_ORIG_INTERVAL];
610 orig_interval = nla_get_u32(attr);
611
612 orig_interval = min_t(u32, orig_interval, INT_MAX);
613 orig_interval = max_t(u32, orig_interval, 2 * BATADV_JITTER);
614
615 atomic_set(&bat_priv->orig_interval, orig_interval);
616 }
617
60040513
SE		 618 batadv_netlink_notify_mesh(bat_priv);
619
620 return 0;
5da0aef5
MS		 621}
622
33a3bb4a 623/**
7e9a8c2c 624 * batadv_netlink_tp_meter_put() - Fill information of started tp_meter session
33a3bb4a
AQ		 625 * @msg: netlink message to be sent back
626 * @cookie: tp meter session cookie
627 *
628 * Return: 0 on success, < 0 on error
629 */
630static int
631batadv_netlink_tp_meter_put(struct sk_buff *msg, u32 cookie)
632{
633 if (nla_put_u32(msg, BATADV_ATTR_TPMETER_COOKIE, cookie))
634 return -ENOBUFS;
635
636 return 0;
637}
638
639/**
7e9a8c2c 640 * batadv_netlink_tpmeter_notify() - send tp_meter result via netlink to client
33a3bb4a
AQ		 641 * @bat_priv: the bat priv with all the soft interface information
642 * @dst: destination of tp_meter session
643 * @result: reason for tp meter session stop
bccb48c8 644 * @test_time: total time of the tp_meter session
33a3bb4a
AQ		 645 * @total_bytes: bytes acked to the receiver
646 * @cookie: cookie of tp_meter session
647 *
648 * Return: 0 on success, < 0 on error
649 */
650int batadv_netlink_tpmeter_notify(struct batadv_priv *bat_priv, const u8 *dst,
651 u8 result, u32 test_time, u64 total_bytes,
652 u32 cookie)
653{
654 struct sk_buff *msg;
655 void *hdr;
656 int ret;
657
658 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
659 if (!msg)
660 return -ENOMEM;
661
662 hdr = genlmsg_put(msg, 0, 0, &batadv_netlink_family, 0,
663 BATADV_CMD_TP_METER);
664 if (!hdr) {
665 ret = -ENOBUFS;
666 goto err_genlmsg;
667 }
668
669 if (nla_put_u32(msg, BATADV_ATTR_TPMETER_COOKIE, cookie))
670 goto nla_put_failure;
671
672 if (nla_put_u32(msg, BATADV_ATTR_TPMETER_TEST_TIME, test_time))
673 goto nla_put_failure;
674
675 if (nla_put_u64_64bit(msg, BATADV_ATTR_TPMETER_BYTES, total_bytes,
676 BATADV_ATTR_PAD))
677 goto nla_put_failure;
678
679 if (nla_put_u8(msg, BATADV_ATTR_TPMETER_RESULT, result))
680 goto nla_put_failure;
681
682 if (nla_put(msg, BATADV_ATTR_ORIG_ADDRESS, ETH_ALEN, dst))
683 goto nla_put_failure;
684
685 genlmsg_end(msg, hdr);
686
687 genlmsg_multicast_netns(&batadv_netlink_family,
688 dev_net(bat_priv->soft_iface), msg, 0,
689 BATADV_NL_MCGRP_TPMETER, GFP_KERNEL);
690
691 return 0;
692
693nla_put_failure:
694 genlmsg_cancel(msg, hdr);
695 ret = -EMSGSIZE;
696
697err_genlmsg:
698 nlmsg_free(msg);
699 return ret;
700}
701
702/**
7e9a8c2c 703 * batadv_netlink_tp_meter_start() - Start a new tp_meter session
33a3bb4a
AQ		 704 * @skb: received netlink message
705 * @info: receiver information
706 *
707 * Return: 0 on success, < 0 on error
708 */
709static int
710batadv_netlink_tp_meter_start(struct sk_buff *skb, struct genl_info *info)
711{
c4a7a8d9 712 struct batadv_priv *bat_priv = info->user_ptr[0];
33a3bb4a
AQ		 713 struct sk_buff *msg = NULL;
714 u32 test_length;
715 void *msg_head;
33a3bb4a
AQ		 716 u32 cookie;
717 u8 *dst;
718 int ret;
719
33a3bb4a
AQ		 720 if (!info->attrs[BATADV_ATTR_ORIG_ADDRESS])
721 return -EINVAL;
722
723 if (!info->attrs[BATADV_ATTR_TPMETER_TEST_TIME])
724 return -EINVAL;
725
33a3bb4a
AQ		 726 dst = nla_data(info->attrs[BATADV_ATTR_ORIG_ADDRESS]);
727
728 test_length = nla_get_u32(info->attrs[BATADV_ATTR_TPMETER_TEST_TIME]);
729
33a3bb4a
AQ		 730 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
731 if (!msg) {
732 ret = -ENOMEM;
733 goto out;
734 }
735
736 msg_head = genlmsg_put(msg, info->snd_portid, info->snd_seq,
737 &batadv_netlink_family, 0,
738 BATADV_CMD_TP_METER);
739 if (!msg_head) {
740 ret = -ENOBUFS;
741 goto out;
742 }
743
33a3bb4a
AQ		 744 batadv_tp_start(bat_priv, dst, test_length, &cookie);
745
746 ret = batadv_netlink_tp_meter_put(msg, cookie);
747
748 out:
33a3bb4a
AQ		 749 if (ret) {
750 if (msg)
751 nlmsg_free(msg);
752 return ret;
753 }
754
755 genlmsg_end(msg, msg_head);
756 return genlmsg_reply(msg, info);
757}
758
759/**
7e9a8c2c 760 * batadv_netlink_tp_meter_start() - Cancel a running tp_meter session
33a3bb4a
AQ		 761 * @skb: received netlink message
762 * @info: receiver information
763 *
764 * Return: 0 on success, < 0 on error
765 */
766static int
767batadv_netlink_tp_meter_cancel(struct sk_buff *skb, struct genl_info *info)
768{
c4a7a8d9 769 struct batadv_priv *bat_priv = info->user_ptr[0];
33a3bb4a
AQ		 770 u8 *dst;
771 int ret = 0;
772
33a3bb4a
AQ		 773 if (!info->attrs[BATADV_ATTR_ORIG_ADDRESS])
774 return -EINVAL;
775
33a3bb4a
AQ		 776 dst = nla_data(info->attrs[BATADV_ATTR_ORIG_ADDRESS]);
777
33a3bb4a
AQ		 778 batadv_tp_stop(bat_priv, dst, BATADV_TP_REASON_CANCEL);
779
33a3bb4a
AQ		 780 return ret;
781}
782
b60620cf 783/**
5c55a40f 784 * batadv_netlink_hardif_fill() - Fill message with hardif attributes
b60620cf 785 * @msg: Netlink message to dump into
5c55a40f
SE		 786 * @bat_priv: the bat priv with all the soft interface information
787 * @hard_iface: hard interface which was modified
788 * @cmd: type of message to generate
b60620cf 789 * @portid: Port making netlink request
5c55a40f
SE		 790 * @seq: sequence number for message
791 * @flags: Additional flags for message
fb69be69 792 * @cb: Control block containing additional options
b60620cf 793 *
5c55a40f 794 * Return: 0 on success or negative error number in case of failure
b60620cf 795 */
5c55a40f
SE		 796static int batadv_netlink_hardif_fill(struct sk_buff *msg,
797 struct batadv_priv *bat_priv,
798 struct batadv_hard_iface *hard_iface,
799 enum batadv_nl_commands cmd,
800 u32 portid, u32 seq, int flags,
801 struct netlink_callback *cb)
b60620cf
MS		 802{
803 struct net_device *net_dev = hard_iface->net_dev;
804 void *hdr;
805
5c55a40f 806 hdr = genlmsg_put(msg, portid, seq, &batadv_netlink_family, flags, cmd);
b60620cf 807 if (!hdr)
5c55a40f
SE		 808 return -ENOBUFS;
809
810 if (cb)
811 genl_dump_check_consistent(cb, hdr);
b60620cf 812
5c55a40f
SE		 813 if (nla_put_u32(msg, BATADV_ATTR_MESH_IFINDEX,
814 bat_priv->soft_iface->ifindex))
815 goto nla_put_failure;
fb69be69 816
b60620cf
MS		 817 if (nla_put_u32(msg, BATADV_ATTR_HARD_IFINDEX,
818 net_dev->ifindex) ||
819 nla_put_string(msg, BATADV_ATTR_HARD_IFNAME,
820 net_dev->name) ||
821 nla_put(msg, BATADV_ATTR_HARD_ADDRESS, ETH_ALEN,
822 net_dev->dev_addr))
823 goto nla_put_failure;
824
825 if (hard_iface->if_status == BATADV_IF_ACTIVE) {
826 if (nla_put_flag(msg, BATADV_ATTR_ACTIVE))
827 goto nla_put_failure;
828 }
829
3bda14d0
LL		 830 if (nla_put_u8(msg, BATADV_ATTR_HOP_PENALTY,
831 atomic_read(&hard_iface->hop_penalty)))
832 goto nla_put_failure;
833
a1080082
SE		 834#ifdef CONFIG_BATMAN_ADV_BATMAN_V
835 if (nla_put_u32(msg, BATADV_ATTR_ELP_INTERVAL,
836 atomic_read(&hard_iface->bat_v.elp_interval)))
837 goto nla_put_failure;
9a182242
SE		 838
839 if (nla_put_u32(msg, BATADV_ATTR_THROUGHPUT_OVERRIDE,
840 atomic_read(&hard_iface->bat_v.throughput_override)))
841 goto nla_put_failure;
a1080082
SE		 842#endif /* CONFIG_BATMAN_ADV_BATMAN_V */
843
b60620cf
MS		 844 genlmsg_end(msg, hdr);
845 return 0;
846
5c55a40f 847nla_put_failure:
b60620cf
MS		 848 genlmsg_cancel(msg, hdr);
849 return -EMSGSIZE;
850}
851
852/**
5c55a40f
SE		 853 * batadv_netlink_notify_hardif() - send hardif attributes to listener
854 * @bat_priv: the bat priv with all the soft interface information
855 * @hard_iface: hard interface which was modified
856 *
857 * Return: 0 on success, < 0 on error
858 */
7e6f461e
SE		 859int batadv_netlink_notify_hardif(struct batadv_priv *bat_priv,
860 struct batadv_hard_iface *hard_iface)
5c55a40f
SE		 861{
862 struct sk_buff *msg;
863 int ret;
864
865 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
866 if (!msg)
867 return -ENOMEM;
868
869 ret = batadv_netlink_hardif_fill(msg, bat_priv, hard_iface,
870 BATADV_CMD_SET_HARDIF, 0, 0, 0, NULL);
871 if (ret < 0) {
872 nlmsg_free(msg);
873 return ret;
874 }
875
876 genlmsg_multicast_netns(&batadv_netlink_family,
877 dev_net(bat_priv->soft_iface), msg, 0,
878 BATADV_NL_MCGRP_CONFIG, GFP_KERNEL);
879
880 return 0;
881}
882
883/**
884 * batadv_netlink_get_hardif() - Get hardif attributes
885 * @skb: Netlink message with request data
886 * @info: receiver information
887 *
888 * Return: 0 on success or negative error number in case of failure
889 */
890static int batadv_netlink_get_hardif(struct sk_buff *skb,
891 struct genl_info *info)
892{
893 struct batadv_hard_iface *hard_iface = info->user_ptr[1];
894 struct batadv_priv *bat_priv = info->user_ptr[0];
895 struct sk_buff *msg;
896 int ret;
897
898 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
899 if (!msg)
900 return -ENOMEM;
901
902 ret = batadv_netlink_hardif_fill(msg, bat_priv, hard_iface,
903 BATADV_CMD_GET_HARDIF,
904 info->snd_portid, info->snd_seq, 0,
905 NULL);
906 if (ret < 0) {
907 nlmsg_free(msg);
908 return ret;
909 }
910
911 ret = genlmsg_reply(msg, info);
912
913 return ret;
914}
915
916/**
917 * batadv_netlink_set_hardif() - Set hardif attributes
918 * @skb: Netlink message with request data
919 * @info: receiver information
920 *
921 * Return: 0 on success or negative error number in case of failure
922 */
923static int batadv_netlink_set_hardif(struct sk_buff *skb,
924 struct genl_info *info)
925{
926 struct batadv_hard_iface *hard_iface = info->user_ptr[1];
927 struct batadv_priv *bat_priv = info->user_ptr[0];
3bda14d0
LL		 928 struct nlattr *attr;
929
930 if (info->attrs[BATADV_ATTR_HOP_PENALTY]) {
931 attr = info->attrs[BATADV_ATTR_HOP_PENALTY];
932
933 atomic_set(&hard_iface->hop_penalty, nla_get_u8(attr));
934 }
5c55a40f 935
a1080082 936#ifdef CONFIG_BATMAN_ADV_BATMAN_V
a1080082
SE		 937
938 if (info->attrs[BATADV_ATTR_ELP_INTERVAL]) {
939 attr = info->attrs[BATADV_ATTR_ELP_INTERVAL];
940
941 atomic_set(&hard_iface->bat_v.elp_interval, nla_get_u32(attr));
942 }
9a182242
SE		 943
944 if (info->attrs[BATADV_ATTR_THROUGHPUT_OVERRIDE]) {
945 attr = info->attrs[BATADV_ATTR_THROUGHPUT_OVERRIDE];
946
947 atomic_set(&hard_iface->bat_v.throughput_override,
948 nla_get_u32(attr));
949 }
a1080082
SE		 950#endif /* CONFIG_BATMAN_ADV_BATMAN_V */
951
5c55a40f
SE		 952 batadv_netlink_notify_hardif(bat_priv, hard_iface);
953
954 return 0;
955}
956
957/**
958 * batadv_netlink_dump_hardif() - Dump all hard interface into a messages
b60620cf
MS		 959 * @msg: Netlink message to dump into
960 * @cb: Parameters from query
961 *
962 * Return: error code, or length of reply message on success
963 */
964static int
5c55a40f 965batadv_netlink_dump_hardif(struct sk_buff *msg, struct netlink_callback *cb)
b60620cf
MS		 966{
967 struct net *net = sock_net(cb->skb->sk);
968 struct net_device *soft_iface;
969 struct batadv_hard_iface *hard_iface;
5c55a40f 970 struct batadv_priv *bat_priv;
b60620cf
MS		 971 int ifindex;
972 int portid = NETLINK_CB(cb->skb).portid;
b60620cf
MS		 973 int skip = cb->args[0];
974 int i = 0;
975
976 ifindex = batadv_netlink_get_ifindex(cb->nlh,
977 BATADV_ATTR_MESH_IFINDEX);
978 if (!ifindex)
979 return -EINVAL;
980
981 soft_iface = dev_get_by_index(net, ifindex);
982 if (!soft_iface)
983 return -ENODEV;
984
985 if (!batadv_softif_is_valid(soft_iface)) {
986 dev_put(soft_iface);
987 return -ENODEV;
988 }
989
5c55a40f
SE		 990 bat_priv = netdev_priv(soft_iface);
991
fb69be69
SE		 992 rtnl_lock();
993 cb->seq = batadv_hardif_generation << 1 | 1;
b60620cf 994
fb69be69 995 list_for_each_entry(hard_iface, &batadv_hardif_list, list) {
b60620cf
MS		 996 if (hard_iface->soft_iface != soft_iface)
997 continue;
998
999 if (i++ < skip)
1000 continue;
1001
5c55a40f
SE		 1002 if (batadv_netlink_hardif_fill(msg, bat_priv, hard_iface,
1003 BATADV_CMD_GET_HARDIF,
1004 portid, cb->nlh->nlmsg_seq,
1005 NLM_F_MULTI, cb)) {
b60620cf
MS		 1006 i--;
1007 break;
1008 }
1009 }
1010
fb69be69 1011 rtnl_unlock();
b60620cf
MS		 1012
1013 dev_put(soft_iface);
1014
1015 cb->args[0] = i;
1016
1017 return msg->len;
1018}
1019
49e7e37c
SE		 1020/**
1021 * batadv_netlink_vlan_fill() - Fill message with vlan attributes
1022 * @msg: Netlink message to dump into
1023 * @bat_priv: the bat priv with all the soft interface information
1024 * @vlan: vlan which was modified
1025 * @cmd: type of message to generate
1026 * @portid: Port making netlink request
1027 * @seq: sequence number for message
1028 * @flags: Additional flags for message
1029 *
1030 * Return: 0 on success or negative error number in case of failure
1031 */
1032static int batadv_netlink_vlan_fill(struct sk_buff *msg,
1033 struct batadv_priv *bat_priv,
1034 struct batadv_softif_vlan *vlan,
1035 enum batadv_nl_commands cmd,
1036 u32 portid, u32 seq, int flags)
1037{
1038 void *hdr;
1039
1040 hdr = genlmsg_put(msg, portid, seq, &batadv_netlink_family, flags, cmd);
1041 if (!hdr)
1042 return -ENOBUFS;
1043
1044 if (nla_put_u32(msg, BATADV_ATTR_MESH_IFINDEX,
1045 bat_priv->soft_iface->ifindex))
1046 goto nla_put_failure;
1047
1048 if (nla_put_u32(msg, BATADV_ATTR_VLANID, vlan->vid & VLAN_VID_MASK))
1049 goto nla_put_failure;
1050
e43d16b8
SE		 1051 if (nla_put_u8(msg, BATADV_ATTR_AP_ISOLATION_ENABLED,
1052 !!atomic_read(&vlan->ap_isolation)))
1053 goto nla_put_failure;
1054
49e7e37c
SE		 1055 genlmsg_end(msg, hdr);
1056 return 0;
1057
1058nla_put_failure:
1059 genlmsg_cancel(msg, hdr);
1060 return -EMSGSIZE;
1061}
1062
1063/**
1064 * batadv_netlink_notify_vlan() - send vlan attributes to listener
1065 * @bat_priv: the bat priv with all the soft interface information
1066 * @vlan: vlan which was modified
1067 *
1068 * Return: 0 on success, < 0 on error
1069 */
7e6f461e
SE		 1070int batadv_netlink_notify_vlan(struct batadv_priv *bat_priv,
1071 struct batadv_softif_vlan *vlan)
49e7e37c
SE		 1072{
1073 struct sk_buff *msg;
1074 int ret;
1075
1076 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1077 if (!msg)
1078 return -ENOMEM;
1079
1080 ret = batadv_netlink_vlan_fill(msg, bat_priv, vlan,
1081 BATADV_CMD_SET_VLAN, 0, 0, 0);
1082 if (ret < 0) {
1083 nlmsg_free(msg);
1084 return ret;
1085 }
1086
1087 genlmsg_multicast_netns(&batadv_netlink_family,
1088 dev_net(bat_priv->soft_iface), msg, 0,
1089 BATADV_NL_MCGRP_CONFIG, GFP_KERNEL);
1090
1091 return 0;
1092}
1093
1094/**
1095 * batadv_netlink_get_vlan() - Get vlan attributes
1096 * @skb: Netlink message with request data
1097 * @info: receiver information
1098 *
1099 * Return: 0 on success or negative error number in case of failure
1100 */
1101static int batadv_netlink_get_vlan(struct sk_buff *skb, struct genl_info *info)
1102{
1103 struct batadv_softif_vlan *vlan = info->user_ptr[1];
1104 struct batadv_priv *bat_priv = info->user_ptr[0];
1105 struct sk_buff *msg;
1106 int ret;
1107
1108 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1109 if (!msg)
1110 return -ENOMEM;
1111
1112 ret = batadv_netlink_vlan_fill(msg, bat_priv, vlan, BATADV_CMD_GET_VLAN,
1113 info->snd_portid, info->snd_seq, 0);
1114 if (ret < 0) {
1115 nlmsg_free(msg);
1116 return ret;
1117 }
1118
1119 ret = genlmsg_reply(msg, info);
1120
1121 return ret;
1122}
1123
1124/**
1125 * batadv_netlink_set_vlan() - Get vlan attributes
1126 * @skb: Netlink message with request data
1127 * @info: receiver information
1128 *
1129 * Return: 0 on success or negative error number in case of failure
1130 */
1131static int batadv_netlink_set_vlan(struct sk_buff *skb, struct genl_info *info)
1132{
1133 struct batadv_softif_vlan *vlan = info->user_ptr[1];
1134 struct batadv_priv *bat_priv = info->user_ptr[0];
e43d16b8
SE		 1135 struct nlattr *attr;
1136
1137 if (info->attrs[BATADV_ATTR_AP_ISOLATION_ENABLED]) {
1138 attr = info->attrs[BATADV_ATTR_AP_ISOLATION_ENABLED];
1139
1140 atomic_set(&vlan->ap_isolation, !!nla_get_u8(attr));
1141 }
49e7e37c
SE		 1142
1143 batadv_netlink_notify_vlan(bat_priv, vlan);
1144
1145 return 0;
1146}
1147
c4a7a8d9
SE		 1148/**
1149 * batadv_get_softif_from_info() - Retrieve soft interface from genl attributes
1150 * @net: the applicable net namespace
1151 * @info: receiver information
1152 *
1153 * Return: Pointer to soft interface (with increased refcnt) on success, error
1154 * pointer on error
1155 */
1156static struct net_device *
1157batadv_get_softif_from_info(struct net *net, struct genl_info *info)
1158{
1159 struct net_device *soft_iface;
1160 int ifindex;
1161
1162 if (!info->attrs[BATADV_ATTR_MESH_IFINDEX])
1163 return ERR_PTR(-EINVAL);
1164
1165 ifindex = nla_get_u32(info->attrs[BATADV_ATTR_MESH_IFINDEX]);
1166
1167 soft_iface = dev_get_by_index(net, ifindex);
1168 if (!soft_iface)
1169 return ERR_PTR(-ENODEV);
1170
1171 if (!batadv_softif_is_valid(soft_iface))
1172 goto err_put_softif;
1173
1174 return soft_iface;
1175
1176err_put_softif:
1177 dev_put(soft_iface);
1178
1179 return ERR_PTR(-EINVAL);
1180}
1181
5c55a40f
SE		 1182/**
1183 * batadv_get_hardif_from_info() - Retrieve hardif from genl attributes
1184 * @bat_priv: the bat priv with all the soft interface information
1185 * @net: the applicable net namespace
1186 * @info: receiver information
1187 *
1188 * Return: Pointer to hard interface (with increased refcnt) on success, error
1189 * pointer on error
1190 */
1191static struct batadv_hard_iface *
1192batadv_get_hardif_from_info(struct batadv_priv *bat_priv, struct net *net,
1193 struct genl_info *info)
1194{
1195 struct batadv_hard_iface *hard_iface;
1196 struct net_device *hard_dev;
1197 unsigned int hardif_index;
1198
1199 if (!info->attrs[BATADV_ATTR_HARD_IFINDEX])
1200 return ERR_PTR(-EINVAL);
1201
1202 hardif_index = nla_get_u32(info->attrs[BATADV_ATTR_HARD_IFINDEX]);
1203
1204 hard_dev = dev_get_by_index(net, hardif_index);
1205 if (!hard_dev)
1206 return ERR_PTR(-ENODEV);
1207
1208 hard_iface = batadv_hardif_get_by_netdev(hard_dev);
1209 if (!hard_iface)
1210 goto err_put_harddev;
1211
1212 if (hard_iface->soft_iface != bat_priv->soft_iface)
1213 goto err_put_hardif;
1214
1215 /* hard_dev is referenced by hard_iface and not needed here */
1216 dev_put(hard_dev);
1217
1218 return hard_iface;
1219
1220err_put_hardif:
1221 batadv_hardif_put(hard_iface);
1222err_put_harddev:
1223 dev_put(hard_dev);
1224
1225 return ERR_PTR(-EINVAL);
1226}
1227
49e7e37c
SE		 1228/**
1229 * batadv_get_vlan_from_info() - Retrieve vlan from genl attributes
1230 * @bat_priv: the bat priv with all the soft interface information
1231 * @net: the applicable net namespace
1232 * @info: receiver information
1233 *
1234 * Return: Pointer to vlan on success (with increased refcnt), error pointer
1235 * on error
1236 */
1237static struct batadv_softif_vlan *
1238batadv_get_vlan_from_info(struct batadv_priv *bat_priv, struct net *net,
1239 struct genl_info *info)
1240{
1241 struct batadv_softif_vlan *vlan;
1242 u16 vid;
1243
1244 if (!info->attrs[BATADV_ATTR_VLANID])
1245 return ERR_PTR(-EINVAL);
1246
1247 vid = nla_get_u16(info->attrs[BATADV_ATTR_VLANID]);
1248
1249 vlan = batadv_softif_vlan_get(bat_priv, vid | BATADV_VLAN_HAS_TAG);
1250 if (!vlan)
1251 return ERR_PTR(-ENOENT);
1252
1253 return vlan;
1254}
1255
c4a7a8d9
SE		 1256/**
1257 * batadv_pre_doit() - Prepare batman-adv genl doit request
1258 * @ops: requested netlink operation
1259 * @skb: Netlink message with request data
1260 * @info: receiver information
1261 *
1262 * Return: 0 on success or negative error number in case of failure
1263 */
1264static int batadv_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
1265 struct genl_info *info)
1266{
1267 struct net *net = genl_info_net(info);
5c55a40f
SE		 1268 struct batadv_hard_iface *hard_iface;
1269 struct batadv_priv *bat_priv = NULL;
49e7e37c 1270 struct batadv_softif_vlan *vlan;
c4a7a8d9 1271 struct net_device *soft_iface;
5c55a40f
SE		 1272 u8 user_ptr1_flags;
1273 u8 mesh_dep_flags;
1274 int ret;
1275
49e7e37c 1276 user_ptr1_flags = BATADV_FLAG_NEED_HARDIF | BATADV_FLAG_NEED_VLAN;
5c55a40f
SE		 1277 if (WARN_ON(hweight8(ops->internal_flags & user_ptr1_flags) > 1))
1278 return -EINVAL;
1279
49e7e37c 1280 mesh_dep_flags = BATADV_FLAG_NEED_HARDIF | BATADV_FLAG_NEED_VLAN;
5c55a40f
SE		 1281 if (WARN_ON((ops->internal_flags & mesh_dep_flags) &&
1282 (~ops->internal_flags & BATADV_FLAG_NEED_MESH)))
1283 return -EINVAL;
c4a7a8d9
SE		 1284
1285 if (ops->internal_flags & BATADV_FLAG_NEED_MESH) {
1286 soft_iface = batadv_get_softif_from_info(net, info);
1287 if (IS_ERR(soft_iface))
1288 return PTR_ERR(soft_iface);
1289
1290 bat_priv = netdev_priv(soft_iface);
1291 info->user_ptr[0] = bat_priv;
1292 }
1293
5c55a40f
SE		 1294 if (ops->internal_flags & BATADV_FLAG_NEED_HARDIF) {
1295 hard_iface = batadv_get_hardif_from_info(bat_priv, net, info);
1296 if (IS_ERR(hard_iface)) {
1297 ret = PTR_ERR(hard_iface);
1298 goto err_put_softif;
1299 }
1300
1301 info->user_ptr[1] = hard_iface;
1302 }
1303
49e7e37c
SE		 1304 if (ops->internal_flags & BATADV_FLAG_NEED_VLAN) {
1305 vlan = batadv_get_vlan_from_info(bat_priv, net, info);
1306 if (IS_ERR(vlan)) {
1307 ret = PTR_ERR(vlan);
1308 goto err_put_softif;
1309 }
1310
1311 info->user_ptr[1] = vlan;
1312 }
1313
c4a7a8d9 1314 return 0;
5c55a40f
SE		 1315
1316err_put_softif:
1317 if (bat_priv)
1318 dev_put(bat_priv->soft_iface);
1319
1320 return ret;
c4a7a8d9
SE		 1321}
1322
1323/**
1324 * batadv_post_doit() - End batman-adv genl doit request
1325 * @ops: requested netlink operation
1326 * @skb: Netlink message with request data
1327 * @info: receiver information
1328 */
1329static void batadv_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
1330 struct genl_info *info)
1331{
5c55a40f 1332 struct batadv_hard_iface *hard_iface;
49e7e37c 1333 struct batadv_softif_vlan *vlan;
c4a7a8d9
SE		 1334 struct batadv_priv *bat_priv;
1335
5c55a40f
SE		 1336 if (ops->internal_flags & BATADV_FLAG_NEED_HARDIF &&
1337 info->user_ptr[1]) {
1338 hard_iface = info->user_ptr[1];
1339
1340 batadv_hardif_put(hard_iface);
1341 }
1342
49e7e37c
SE		 1343 if (ops->internal_flags & BATADV_FLAG_NEED_VLAN && info->user_ptr[1]) {
1344 vlan = info->user_ptr[1];
1345 batadv_softif_vlan_put(vlan);
1346 }
1347
c4a7a8d9
SE		 1348 if (ops->internal_flags & BATADV_FLAG_NEED_MESH && info->user_ptr[0]) {
1349 bat_priv = info->user_ptr[0];
1350 dev_put(bat_priv->soft_iface);
1351 }
1352}
1353
66a9b928 1354static const struct genl_small_ops batadv_netlink_ops[] = {
5da0aef5 1355 {
60040513 1356 .cmd = BATADV_CMD_GET_MESH,
ef6243ac 1357 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
60040513 1358 /* can be retrieved by unprivileged users */
60040513
SE		 1359 .doit = batadv_netlink_get_mesh,
1360 .internal_flags = BATADV_FLAG_NEED_MESH,
5da0aef5 1361 },
33a3bb4a
AQ		 1362 {
1363 .cmd = BATADV_CMD_TP_METER,
ef6243ac 1364 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
33a3bb4a 1365 .flags = GENL_ADMIN_PERM,
33a3bb4a 1366 .doit = batadv_netlink_tp_meter_start,
c4a7a8d9 1367 .internal_flags = BATADV_FLAG_NEED_MESH,
33a3bb4a
AQ		 1368 },
1369 {
1370 .cmd = BATADV_CMD_TP_METER_CANCEL,
ef6243ac 1371 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
33a3bb4a 1372 .flags = GENL_ADMIN_PERM,
33a3bb4a 1373 .doit = batadv_netlink_tp_meter_cancel,
c4a7a8d9 1374 .internal_flags = BATADV_FLAG_NEED_MESH,
33a3bb4a 1375 },
07a3061e
MS		 1376 {
1377 .cmd = BATADV_CMD_GET_ROUTING_ALGOS,
ef6243ac 1378 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
07a3061e 1379 .flags = GENL_ADMIN_PERM,
07a3061e
MS		 1380 .dumpit = batadv_algo_dump,
1381 },
b60620cf 1382 {
5c55a40f 1383 .cmd = BATADV_CMD_GET_HARDIF,
ef6243ac 1384 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
5c55a40f 1385 /* can be retrieved by unprivileged users */
5c55a40f
SE		 1386 .dumpit = batadv_netlink_dump_hardif,
1387 .doit = batadv_netlink_get_hardif,
1388 .internal_flags = BATADV_FLAG_NEED_MESH |
1389 BATADV_FLAG_NEED_HARDIF,
b60620cf 1390 },
d34f0550
MS		 1391 {
1392 .cmd = BATADV_CMD_GET_TRANSTABLE_LOCAL,
ef6243ac 1393 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
d34f0550 1394 .flags = GENL_ADMIN_PERM,
d34f0550
MS		 1395 .dumpit = batadv_tt_local_dump,
1396 },
1397 {
1398 .cmd = BATADV_CMD_GET_TRANSTABLE_GLOBAL,
ef6243ac 1399 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
d34f0550 1400 .flags = GENL_ADMIN_PERM,
d34f0550
MS		 1401 .dumpit = batadv_tt_global_dump,
1402 },
85cf8c85
MS		 1403 {
1404 .cmd = BATADV_CMD_GET_ORIGINATORS,
ef6243ac 1405 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
85cf8c85 1406 .flags = GENL_ADMIN_PERM,
85cf8c85
MS		 1407 .dumpit = batadv_orig_dump,
1408 },
1409 {
1410 .cmd = BATADV_CMD_GET_NEIGHBORS,
ef6243ac 1411 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
85cf8c85 1412 .flags = GENL_ADMIN_PERM,
85cf8c85
MS		 1413 .dumpit = batadv_hardif_neigh_dump,
1414 },
d7129daf
SE		 1415 {
1416 .cmd = BATADV_CMD_GET_GATEWAYS,
ef6243ac 1417 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
d7129daf 1418 .flags = GENL_ADMIN_PERM,
d7129daf
SE		 1419 .dumpit = batadv_gw_dump,
1420 },
04f3f5bf
AL		 1421 {
1422 .cmd = BATADV_CMD_GET_BLA_CLAIM,
ef6243ac 1423 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
04f3f5bf 1424 .flags = GENL_ADMIN_PERM,
04f3f5bf
AL		 1425 .dumpit = batadv_bla_claim_dump,
1426 },
ea4152e1
SW		 1427 {
1428 .cmd = BATADV_CMD_GET_BLA_BACKBONE,
ef6243ac 1429 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
ea4152e1 1430 .flags = GENL_ADMIN_PERM,
ea4152e1
SW		 1431 .dumpit = batadv_bla_backbone_dump,
1432 },
41aeefcc
LL		 1433 {
1434 .cmd = BATADV_CMD_GET_DAT_CACHE,
ef6243ac 1435 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
41aeefcc 1436 .flags = GENL_ADMIN_PERM,
41aeefcc
LL		 1437 .dumpit = batadv_dat_cache_dump,
1438 },
53dd9a68
LL		 1439 {
1440 .cmd = BATADV_CMD_GET_MCAST_FLAGS,
ef6243ac 1441 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
53dd9a68 1442 .flags = GENL_ADMIN_PERM,
53dd9a68
LL		 1443 .dumpit = batadv_mcast_flags_dump,
1444 },
60040513
SE		 1445 {
1446 .cmd = BATADV_CMD_SET_MESH,
ef6243ac 1447 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
60040513 1448 .flags = GENL_ADMIN_PERM,
60040513
SE		 1449 .doit = batadv_netlink_set_mesh,
1450 .internal_flags = BATADV_FLAG_NEED_MESH,
1451 },
5c55a40f
SE		 1452 {
1453 .cmd = BATADV_CMD_SET_HARDIF,
ef6243ac 1454 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
5c55a40f 1455 .flags = GENL_ADMIN_PERM,
5c55a40f
SE		 1456 .doit = batadv_netlink_set_hardif,
1457 .internal_flags = BATADV_FLAG_NEED_MESH |
1458 BATADV_FLAG_NEED_HARDIF,
1459 },
49e7e37c
SE		 1460 {
1461 .cmd = BATADV_CMD_GET_VLAN,
ef6243ac 1462 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
49e7e37c 1463 /* can be retrieved by unprivileged users */
49e7e37c
SE		 1464 .doit = batadv_netlink_get_vlan,
1465 .internal_flags = BATADV_FLAG_NEED_MESH |
1466 BATADV_FLAG_NEED_VLAN,
1467 },
1468 {
1469 .cmd = BATADV_CMD_SET_VLAN,
ef6243ac 1470 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
49e7e37c 1471 .flags = GENL_ADMIN_PERM,
49e7e37c
SE		 1472 .doit = batadv_netlink_set_vlan,
1473 .internal_flags = BATADV_FLAG_NEED_MESH |
1474 BATADV_FLAG_NEED_VLAN,
1475 },
09748a22
MS		 1476};
1477
56989f6d 1478struct genl_family batadv_netlink_family __ro_after_init = {
489111e5
JB		 1479 .hdrsize = 0,
1480 .name = BATADV_NL_NAME,
1481 .version = 1,
1482 .maxattr = BATADV_ATTR_MAX,
3b0f31f2 1483 .policy = batadv_netlink_policy,
489111e5 1484 .netnsok = true,
c4a7a8d9
SE		 1485 .pre_doit = batadv_pre_doit,
1486 .post_doit = batadv_post_doit,
489111e5 1487 .module = THIS_MODULE,
66a9b928
JK		 1488 .small_ops = batadv_netlink_ops,
1489 .n_small_ops = ARRAY_SIZE(batadv_netlink_ops),
489111e5
JB		 1490 .mcgrps = batadv_netlink_mcgrps,
1491 .n_mcgrps = ARRAY_SIZE(batadv_netlink_mcgrps),
1492};
1493
09748a22 1494/**
7e9a8c2c 1495 * batadv_netlink_register() - register batadv genl netlink family
09748a22
MS		 1496 */
1497void __init batadv_netlink_register(void)
1498{
1499 int ret;
1500
489111e5 1501 ret = genl_register_family(&batadv_netlink_family);
09748a22
MS		 1502 if (ret)
1503 pr_warn("unable to register netlink family");
1504}
1505
1506/**
7e9a8c2c 1507 * batadv_netlink_unregister() - unregister batadv genl netlink family
09748a22
MS		 1508 */
1509void batadv_netlink_unregister(void)
1510{
1511 genl_unregister_family(&batadv_netlink_family);
1512}
Linux 6.x block layer and io_uring tree(s)