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Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git...
[mirror_ubuntu-jammy-kernel.git] / net / sched / act_tunnel_key.c
1 /*
2 * Copyright (c) 2016, Amir Vadai <amir@vadai.me>
3 * Copyright (c) 2016, Mellanox Technologies. All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 */
10
11 #include <linux/module.h>
12 #include <linux/init.h>
13 #include <linux/kernel.h>
14 #include <linux/skbuff.h>
15 #include <linux/rtnetlink.h>
16 #include <net/geneve.h>
17 #include <net/netlink.h>
18 #include <net/pkt_sched.h>
19 #include <net/dst.h>
20 #include <net/pkt_cls.h>
21
22 #include <linux/tc_act/tc_tunnel_key.h>
23 #include <net/tc_act/tc_tunnel_key.h>
24
25 static unsigned int tunnel_key_net_id;
26 static struct tc_action_ops act_tunnel_key_ops;
27
28 static int tunnel_key_act(struct sk_buff *skb, const struct tc_action *a,
29 struct tcf_result *res)
30 {
31 struct tcf_tunnel_key *t = to_tunnel_key(a);
32 struct tcf_tunnel_key_params *params;
33 int action;
34
35 params = rcu_dereference_bh(t->params);
36
37 tcf_lastuse_update(&t->tcf_tm);
38 bstats_cpu_update(this_cpu_ptr(t->common.cpu_bstats), skb);
39 action = READ_ONCE(t->tcf_action);
40
41 switch (params->tcft_action) {
42 case TCA_TUNNEL_KEY_ACT_RELEASE:
43 skb_dst_drop(skb);
44 break;
45 case TCA_TUNNEL_KEY_ACT_SET:
46 skb_dst_drop(skb);
47 skb_dst_set(skb, dst_clone(&params->tcft_enc_metadata->dst));
48 break;
49 default:
50 WARN_ONCE(1, "Bad tunnel_key action %d.\n",
51 params->tcft_action);
52 break;
53 }
54
55 return action;
56 }
57
58 static const struct nla_policy
59 enc_opts_policy[TCA_TUNNEL_KEY_ENC_OPTS_MAX + 1] = {
60 [TCA_TUNNEL_KEY_ENC_OPTS_GENEVE] = { .type = NLA_NESTED },
61 };
62
63 static const struct nla_policy
64 geneve_opt_policy[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_MAX + 1] = {
65 [TCA_TUNNEL_KEY_ENC_OPT_GENEVE_CLASS] = { .type = NLA_U16 },
66 [TCA_TUNNEL_KEY_ENC_OPT_GENEVE_TYPE] = { .type = NLA_U8 },
67 [TCA_TUNNEL_KEY_ENC_OPT_GENEVE_DATA] = { .type = NLA_BINARY,
68 .len = 128 },
69 };
70
71 static int
72 tunnel_key_copy_geneve_opt(const struct nlattr *nla, void *dst, int dst_len,
73 struct netlink_ext_ack *extack)
74 {
75 struct nlattr *tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_MAX + 1];
76 int err, data_len, opt_len;
77 u8 *data;
78
79 err = nla_parse_nested_deprecated(tb,
80 TCA_TUNNEL_KEY_ENC_OPT_GENEVE_MAX,
81 nla, geneve_opt_policy, extack);
82 if (err < 0)
83 return err;
84
85 if (!tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_CLASS] ||
86 !tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_TYPE] ||
87 !tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_DATA]) {
88 NL_SET_ERR_MSG(extack, "Missing tunnel key geneve option class, type or data");
89 return -EINVAL;
90 }
91
92 data = nla_data(tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_DATA]);
93 data_len = nla_len(tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_DATA]);
94 if (data_len < 4) {
95 NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is less than 4 bytes long");
96 return -ERANGE;
97 }
98 if (data_len % 4) {
99 NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is not a multiple of 4 bytes long");
100 return -ERANGE;
101 }
102
103 opt_len = sizeof(struct geneve_opt) + data_len;
104 if (dst) {
105 struct geneve_opt *opt = dst;
106
107 WARN_ON(dst_len < opt_len);
108
109 opt->opt_class =
110 nla_get_be16(tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_CLASS]);
111 opt->type = nla_get_u8(tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_TYPE]);
112 opt->length = data_len / 4; /* length is in units of 4 bytes */
113 opt->r1 = 0;
114 opt->r2 = 0;
115 opt->r3 = 0;
116
117 memcpy(opt + 1, data, data_len);
118 }
119
120 return opt_len;
121 }
122
123 static int tunnel_key_copy_opts(const struct nlattr *nla, u8 *dst,
124 int dst_len, struct netlink_ext_ack *extack)
125 {
126 int err, rem, opt_len, len = nla_len(nla), opts_len = 0;
127 const struct nlattr *attr, *head = nla_data(nla);
128
129 err = nla_validate_deprecated(head, len, TCA_TUNNEL_KEY_ENC_OPTS_MAX,
130 enc_opts_policy, extack);
131 if (err)
132 return err;
133
134 nla_for_each_attr(attr, head, len, rem) {
135 switch (nla_type(attr)) {
136 case TCA_TUNNEL_KEY_ENC_OPTS_GENEVE:
137 opt_len = tunnel_key_copy_geneve_opt(attr, dst,
138 dst_len, extack);
139 if (opt_len < 0)
140 return opt_len;
141 opts_len += opt_len;
142 if (dst) {
143 dst_len -= opt_len;
144 dst += opt_len;
145 }
146 break;
147 }
148 }
149
150 if (!opts_len) {
151 NL_SET_ERR_MSG(extack, "Empty list of tunnel options");
152 return -EINVAL;
153 }
154
155 if (rem > 0) {
156 NL_SET_ERR_MSG(extack, "Trailing data after parsing tunnel key options attributes");
157 return -EINVAL;
158 }
159
160 return opts_len;
161 }
162
163 static int tunnel_key_get_opts_len(struct nlattr *nla,
164 struct netlink_ext_ack *extack)
165 {
166 return tunnel_key_copy_opts(nla, NULL, 0, extack);
167 }
168
169 static int tunnel_key_opts_set(struct nlattr *nla, struct ip_tunnel_info *info,
170 int opts_len, struct netlink_ext_ack *extack)
171 {
172 info->options_len = opts_len;
173 switch (nla_type(nla_data(nla))) {
174 case TCA_TUNNEL_KEY_ENC_OPTS_GENEVE:
175 #if IS_ENABLED(CONFIG_INET)
176 info->key.tun_flags |= TUNNEL_GENEVE_OPT;
177 return tunnel_key_copy_opts(nla, ip_tunnel_info_opts(info),
178 opts_len, extack);
179 #else
180 return -EAFNOSUPPORT;
181 #endif
182 default:
183 NL_SET_ERR_MSG(extack, "Cannot set tunnel options for unknown tunnel type");
184 return -EINVAL;
185 }
186 }
187
188 static const struct nla_policy tunnel_key_policy[TCA_TUNNEL_KEY_MAX + 1] = {
189 [TCA_TUNNEL_KEY_PARMS] = { .len = sizeof(struct tc_tunnel_key) },
190 [TCA_TUNNEL_KEY_ENC_IPV4_SRC] = { .type = NLA_U32 },
191 [TCA_TUNNEL_KEY_ENC_IPV4_DST] = { .type = NLA_U32 },
192 [TCA_TUNNEL_KEY_ENC_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
193 [TCA_TUNNEL_KEY_ENC_IPV6_DST] = { .len = sizeof(struct in6_addr) },
194 [TCA_TUNNEL_KEY_ENC_KEY_ID] = { .type = NLA_U32 },
195 [TCA_TUNNEL_KEY_ENC_DST_PORT] = {.type = NLA_U16},
196 [TCA_TUNNEL_KEY_NO_CSUM] = { .type = NLA_U8 },
197 [TCA_TUNNEL_KEY_ENC_OPTS] = { .type = NLA_NESTED },
198 [TCA_TUNNEL_KEY_ENC_TOS] = { .type = NLA_U8 },
199 [TCA_TUNNEL_KEY_ENC_TTL] = { .type = NLA_U8 },
200 };
201
202 static void tunnel_key_release_params(struct tcf_tunnel_key_params *p)
203 {
204 if (!p)
205 return;
206 if (p->tcft_action == TCA_TUNNEL_KEY_ACT_SET)
207 dst_release(&p->tcft_enc_metadata->dst);
208
209 kfree_rcu(p, rcu);
210 }
211
212 static int tunnel_key_init(struct net *net, struct nlattr *nla,
213 struct nlattr *est, struct tc_action **a,
214 int ovr, int bind, bool rtnl_held,
215 struct tcf_proto *tp,
216 struct netlink_ext_ack *extack)
217 {
218 struct tc_action_net *tn = net_generic(net, tunnel_key_net_id);
219 struct nlattr *tb[TCA_TUNNEL_KEY_MAX + 1];
220 struct tcf_tunnel_key_params *params_new;
221 struct metadata_dst *metadata = NULL;
222 struct tcf_chain *goto_ch = NULL;
223 struct tc_tunnel_key *parm;
224 struct tcf_tunnel_key *t;
225 bool exists = false;
226 __be16 dst_port = 0;
227 __be64 key_id = 0;
228 int opts_len = 0;
229 __be16 flags = 0;
230 u8 tos, ttl;
231 int ret = 0;
232 int err;
233
234 if (!nla) {
235 NL_SET_ERR_MSG(extack, "Tunnel requires attributes to be passed");
236 return -EINVAL;
237 }
238
239 err = nla_parse_nested_deprecated(tb, TCA_TUNNEL_KEY_MAX, nla,
240 tunnel_key_policy, extack);
241 if (err < 0) {
242 NL_SET_ERR_MSG(extack, "Failed to parse nested tunnel key attributes");
243 return err;
244 }
245
246 if (!tb[TCA_TUNNEL_KEY_PARMS]) {
247 NL_SET_ERR_MSG(extack, "Missing tunnel key parameters");
248 return -EINVAL;
249 }
250
251 parm = nla_data(tb[TCA_TUNNEL_KEY_PARMS]);
252 err = tcf_idr_check_alloc(tn, &parm->index, a, bind);
253 if (err < 0)
254 return err;
255 exists = err;
256 if (exists && bind)
257 return 0;
258
259 switch (parm->t_action) {
260 case TCA_TUNNEL_KEY_ACT_RELEASE:
261 break;
262 case TCA_TUNNEL_KEY_ACT_SET:
263 if (tb[TCA_TUNNEL_KEY_ENC_KEY_ID]) {
264 __be32 key32;
265
266 key32 = nla_get_be32(tb[TCA_TUNNEL_KEY_ENC_KEY_ID]);
267 key_id = key32_to_tunnel_id(key32);
268 flags = TUNNEL_KEY;
269 }
270
271 flags |= TUNNEL_CSUM;
272 if (tb[TCA_TUNNEL_KEY_NO_CSUM] &&
273 nla_get_u8(tb[TCA_TUNNEL_KEY_NO_CSUM]))
274 flags &= ~TUNNEL_CSUM;
275
276 if (tb[TCA_TUNNEL_KEY_ENC_DST_PORT])
277 dst_port = nla_get_be16(tb[TCA_TUNNEL_KEY_ENC_DST_PORT]);
278
279 if (tb[TCA_TUNNEL_KEY_ENC_OPTS]) {
280 opts_len = tunnel_key_get_opts_len(tb[TCA_TUNNEL_KEY_ENC_OPTS],
281 extack);
282 if (opts_len < 0) {
283 ret = opts_len;
284 goto err_out;
285 }
286 }
287
288 tos = 0;
289 if (tb[TCA_TUNNEL_KEY_ENC_TOS])
290 tos = nla_get_u8(tb[TCA_TUNNEL_KEY_ENC_TOS]);
291 ttl = 0;
292 if (tb[TCA_TUNNEL_KEY_ENC_TTL])
293 ttl = nla_get_u8(tb[TCA_TUNNEL_KEY_ENC_TTL]);
294
295 if (tb[TCA_TUNNEL_KEY_ENC_IPV4_SRC] &&
296 tb[TCA_TUNNEL_KEY_ENC_IPV4_DST]) {
297 __be32 saddr;
298 __be32 daddr;
299
300 saddr = nla_get_in_addr(tb[TCA_TUNNEL_KEY_ENC_IPV4_SRC]);
301 daddr = nla_get_in_addr(tb[TCA_TUNNEL_KEY_ENC_IPV4_DST]);
302
303 metadata = __ip_tun_set_dst(saddr, daddr, tos, ttl,
304 dst_port, flags,
305 key_id, opts_len);
306 } else if (tb[TCA_TUNNEL_KEY_ENC_IPV6_SRC] &&
307 tb[TCA_TUNNEL_KEY_ENC_IPV6_DST]) {
308 struct in6_addr saddr;
309 struct in6_addr daddr;
310
311 saddr = nla_get_in6_addr(tb[TCA_TUNNEL_KEY_ENC_IPV6_SRC]);
312 daddr = nla_get_in6_addr(tb[TCA_TUNNEL_KEY_ENC_IPV6_DST]);
313
314 metadata = __ipv6_tun_set_dst(&saddr, &daddr, tos, ttl, dst_port,
315 0, flags,
316 key_id, 0);
317 } else {
318 NL_SET_ERR_MSG(extack, "Missing either ipv4 or ipv6 src and dst");
319 ret = -EINVAL;
320 goto err_out;
321 }
322
323 if (!metadata) {
324 NL_SET_ERR_MSG(extack, "Cannot allocate tunnel metadata dst");
325 ret = -ENOMEM;
326 goto err_out;
327 }
328
329 #ifdef CONFIG_DST_CACHE
330 ret = dst_cache_init(&metadata->u.tun_info.dst_cache, GFP_KERNEL);
331 if (ret)
332 goto release_tun_meta;
333 #endif
334
335 if (opts_len) {
336 ret = tunnel_key_opts_set(tb[TCA_TUNNEL_KEY_ENC_OPTS],
337 &metadata->u.tun_info,
338 opts_len, extack);
339 if (ret < 0)
340 goto release_tun_meta;
341 }
342
343 metadata->u.tun_info.mode |= IP_TUNNEL_INFO_TX;
344 break;
345 default:
346 NL_SET_ERR_MSG(extack, "Unknown tunnel key action");
347 ret = -EINVAL;
348 goto err_out;
349 }
350
351 if (!exists) {
352 ret = tcf_idr_create(tn, parm->index, est, a,
353 &act_tunnel_key_ops, bind, true);
354 if (ret) {
355 NL_SET_ERR_MSG(extack, "Cannot create TC IDR");
356 goto release_tun_meta;
357 }
358
359 ret = ACT_P_CREATED;
360 } else if (!ovr) {
361 NL_SET_ERR_MSG(extack, "TC IDR already exists");
362 ret = -EEXIST;
363 goto release_tun_meta;
364 }
365
366 err = tcf_action_check_ctrlact(parm->action, tp, &goto_ch, extack);
367 if (err < 0) {
368 ret = err;
369 exists = true;
370 goto release_tun_meta;
371 }
372 t = to_tunnel_key(*a);
373
374 params_new = kzalloc(sizeof(*params_new), GFP_KERNEL);
375 if (unlikely(!params_new)) {
376 NL_SET_ERR_MSG(extack, "Cannot allocate tunnel key parameters");
377 ret = -ENOMEM;
378 exists = true;
379 goto put_chain;
380 }
381 params_new->tcft_action = parm->t_action;
382 params_new->tcft_enc_metadata = metadata;
383
384 spin_lock_bh(&t->tcf_lock);
385 goto_ch = tcf_action_set_ctrlact(*a, parm->action, goto_ch);
386 rcu_swap_protected(t->params, params_new,
387 lockdep_is_held(&t->tcf_lock));
388 spin_unlock_bh(&t->tcf_lock);
389 tunnel_key_release_params(params_new);
390 if (goto_ch)
391 tcf_chain_put_by_act(goto_ch);
392
393 if (ret == ACT_P_CREATED)
394 tcf_idr_insert(tn, *a);
395
396 return ret;
397
398 put_chain:
399 if (goto_ch)
400 tcf_chain_put_by_act(goto_ch);
401
402 release_tun_meta:
403 if (metadata)
404 dst_release(&metadata->dst);
405
406 err_out:
407 if (exists)
408 tcf_idr_release(*a, bind);
409 else
410 tcf_idr_cleanup(tn, parm->index);
411 return ret;
412 }
413
414 static void tunnel_key_release(struct tc_action *a)
415 {
416 struct tcf_tunnel_key *t = to_tunnel_key(a);
417 struct tcf_tunnel_key_params *params;
418
419 params = rcu_dereference_protected(t->params, 1);
420 tunnel_key_release_params(params);
421 }
422
423 static int tunnel_key_geneve_opts_dump(struct sk_buff *skb,
424 const struct ip_tunnel_info *info)
425 {
426 int len = info->options_len;
427 u8 *src = (u8 *)(info + 1);
428 struct nlattr *start;
429
430 start = nla_nest_start_noflag(skb, TCA_TUNNEL_KEY_ENC_OPTS_GENEVE);
431 if (!start)
432 return -EMSGSIZE;
433
434 while (len > 0) {
435 struct geneve_opt *opt = (struct geneve_opt *)src;
436
437 if (nla_put_be16(skb, TCA_TUNNEL_KEY_ENC_OPT_GENEVE_CLASS,
438 opt->opt_class) ||
439 nla_put_u8(skb, TCA_TUNNEL_KEY_ENC_OPT_GENEVE_TYPE,
440 opt->type) ||
441 nla_put(skb, TCA_TUNNEL_KEY_ENC_OPT_GENEVE_DATA,
442 opt->length * 4, opt + 1)) {
443 nla_nest_cancel(skb, start);
444 return -EMSGSIZE;
445 }
446
447 len -= sizeof(struct geneve_opt) + opt->length * 4;
448 src += sizeof(struct geneve_opt) + opt->length * 4;
449 }
450
451 nla_nest_end(skb, start);
452 return 0;
453 }
454
455 static int tunnel_key_opts_dump(struct sk_buff *skb,
456 const struct ip_tunnel_info *info)
457 {
458 struct nlattr *start;
459 int err = -EINVAL;
460
461 if (!info->options_len)
462 return 0;
463
464 start = nla_nest_start_noflag(skb, TCA_TUNNEL_KEY_ENC_OPTS);
465 if (!start)
466 return -EMSGSIZE;
467
468 if (info->key.tun_flags & TUNNEL_GENEVE_OPT) {
469 err = tunnel_key_geneve_opts_dump(skb, info);
470 if (err)
471 goto err_out;
472 } else {
473 err_out:
474 nla_nest_cancel(skb, start);
475 return err;
476 }
477
478 nla_nest_end(skb, start);
479 return 0;
480 }
481
482 static int tunnel_key_dump_addresses(struct sk_buff *skb,
483 const struct ip_tunnel_info *info)
484 {
485 unsigned short family = ip_tunnel_info_af(info);
486
487 if (family == AF_INET) {
488 __be32 saddr = info->key.u.ipv4.src;
489 __be32 daddr = info->key.u.ipv4.dst;
490
491 if (!nla_put_in_addr(skb, TCA_TUNNEL_KEY_ENC_IPV4_SRC, saddr) &&
492 !nla_put_in_addr(skb, TCA_TUNNEL_KEY_ENC_IPV4_DST, daddr))
493 return 0;
494 }
495
496 if (family == AF_INET6) {
497 const struct in6_addr *saddr6 = &info->key.u.ipv6.src;
498 const struct in6_addr *daddr6 = &info->key.u.ipv6.dst;
499
500 if (!nla_put_in6_addr(skb,
501 TCA_TUNNEL_KEY_ENC_IPV6_SRC, saddr6) &&
502 !nla_put_in6_addr(skb,
503 TCA_TUNNEL_KEY_ENC_IPV6_DST, daddr6))
504 return 0;
505 }
506
507 return -EINVAL;
508 }
509
510 static int tunnel_key_dump(struct sk_buff *skb, struct tc_action *a,
511 int bind, int ref)
512 {
513 unsigned char *b = skb_tail_pointer(skb);
514 struct tcf_tunnel_key *t = to_tunnel_key(a);
515 struct tcf_tunnel_key_params *params;
516 struct tc_tunnel_key opt = {
517 .index = t->tcf_index,
518 .refcnt = refcount_read(&t->tcf_refcnt) - ref,
519 .bindcnt = atomic_read(&t->tcf_bindcnt) - bind,
520 };
521 struct tcf_t tm;
522
523 spin_lock_bh(&t->tcf_lock);
524 params = rcu_dereference_protected(t->params,
525 lockdep_is_held(&t->tcf_lock));
526 opt.action = t->tcf_action;
527 opt.t_action = params->tcft_action;
528
529 if (nla_put(skb, TCA_TUNNEL_KEY_PARMS, sizeof(opt), &opt))
530 goto nla_put_failure;
531
532 if (params->tcft_action == TCA_TUNNEL_KEY_ACT_SET) {
533 struct ip_tunnel_info *info =
534 &params->tcft_enc_metadata->u.tun_info;
535 struct ip_tunnel_key *key = &info->key;
536 __be32 key_id = tunnel_id_to_key32(key->tun_id);
537
538 if (((key->tun_flags & TUNNEL_KEY) &&
539 nla_put_be32(skb, TCA_TUNNEL_KEY_ENC_KEY_ID, key_id)) ||
540 tunnel_key_dump_addresses(skb,
541 &params->tcft_enc_metadata->u.tun_info) ||
542 (key->tp_dst &&
543 nla_put_be16(skb, TCA_TUNNEL_KEY_ENC_DST_PORT,
544 key->tp_dst)) ||
545 nla_put_u8(skb, TCA_TUNNEL_KEY_NO_CSUM,
546 !(key->tun_flags & TUNNEL_CSUM)) ||
547 tunnel_key_opts_dump(skb, info))
548 goto nla_put_failure;
549
550 if (key->tos && nla_put_u8(skb, TCA_TUNNEL_KEY_ENC_TOS, key->tos))
551 goto nla_put_failure;
552
553 if (key->ttl && nla_put_u8(skb, TCA_TUNNEL_KEY_ENC_TTL, key->ttl))
554 goto nla_put_failure;
555 }
556
557 tcf_tm_dump(&tm, &t->tcf_tm);
558 if (nla_put_64bit(skb, TCA_TUNNEL_KEY_TM, sizeof(tm),
559 &tm, TCA_TUNNEL_KEY_PAD))
560 goto nla_put_failure;
561 spin_unlock_bh(&t->tcf_lock);
562
563 return skb->len;
564
565 nla_put_failure:
566 spin_unlock_bh(&t->tcf_lock);
567 nlmsg_trim(skb, b);
568 return -1;
569 }
570
571 static int tunnel_key_walker(struct net *net, struct sk_buff *skb,
572 struct netlink_callback *cb, int type,
573 const struct tc_action_ops *ops,
574 struct netlink_ext_ack *extack)
575 {
576 struct tc_action_net *tn = net_generic(net, tunnel_key_net_id);
577
578 return tcf_generic_walker(tn, skb, cb, type, ops, extack);
579 }
580
581 static int tunnel_key_search(struct net *net, struct tc_action **a, u32 index)
582 {
583 struct tc_action_net *tn = net_generic(net, tunnel_key_net_id);
584
585 return tcf_idr_search(tn, a, index);
586 }
587
588 static struct tc_action_ops act_tunnel_key_ops = {
589 .kind = "tunnel_key",
590 .id = TCA_ID_TUNNEL_KEY,
591 .owner = THIS_MODULE,
592 .act = tunnel_key_act,
593 .dump = tunnel_key_dump,
594 .init = tunnel_key_init,
595 .cleanup = tunnel_key_release,
596 .walk = tunnel_key_walker,
597 .lookup = tunnel_key_search,
598 .size = sizeof(struct tcf_tunnel_key),
599 };
600
601 static __net_init int tunnel_key_init_net(struct net *net)
602 {
603 struct tc_action_net *tn = net_generic(net, tunnel_key_net_id);
604
605 return tc_action_net_init(tn, &act_tunnel_key_ops);
606 }
607
608 static void __net_exit tunnel_key_exit_net(struct list_head *net_list)
609 {
610 tc_action_net_exit(net_list, tunnel_key_net_id);
611 }
612
613 static struct pernet_operations tunnel_key_net_ops = {
614 .init = tunnel_key_init_net,
615 .exit_batch = tunnel_key_exit_net,
616 .id = &tunnel_key_net_id,
617 .size = sizeof(struct tc_action_net),
618 };
619
620 static int __init tunnel_key_init_module(void)
621 {
622 return tcf_register_action(&act_tunnel_key_ops, &tunnel_key_net_ops);
623 }
624
625 static void __exit tunnel_key_cleanup_module(void)
626 {
627 tcf_unregister_action(&act_tunnel_key_ops, &tunnel_key_net_ops);
628 }
629
630 module_init(tunnel_key_init_module);
631 module_exit(tunnel_key_cleanup_module);
632
633 MODULE_AUTHOR("Amir Vadai <amir@vadai.me>");
634 MODULE_DESCRIPTION("ip tunnel manipulation actions");
635 MODULE_LICENSE("GPL v2");
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