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Merge tag 'upstream-4.19-rc1' of git://git.infradead.org/linux-ubifs
[linux/fpc-iii.git] / net / sched / act_tunnel_key.c
blob8f09cf08d8fe1242cdbbc1951124e0f19ace18ae
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
21 #include <linux/tc_act/tc_tunnel_key.h>
22 #include <net/tc_act/tc_tunnel_key.h>
23
24 static unsigned int tunnel_key_net_id;
25 static struct tc_action_ops act_tunnel_key_ops;
26
27 static int tunnel_key_act(struct sk_buff *skb, const struct tc_action *a,
28 struct tcf_result *res)
29 {
30 struct tcf_tunnel_key *t = to_tunnel_key(a);
31 struct tcf_tunnel_key_params *params;
32 int action;
33
34 params = rcu_dereference_bh(t->params);
35
36 tcf_lastuse_update(&t->tcf_tm);
37 bstats_cpu_update(this_cpu_ptr(t->common.cpu_bstats), skb);
38 action = READ_ONCE(t->tcf_action);
39
40 switch (params->tcft_action) {
41 case TCA_TUNNEL_KEY_ACT_RELEASE:
42 skb_dst_drop(skb);
43 break;
44 case TCA_TUNNEL_KEY_ACT_SET:
45 skb_dst_drop(skb);
46 skb_dst_set(skb, dst_clone(&params->tcft_enc_metadata->dst));
47 break;
48 default:
49 WARN_ONCE(1, "Bad tunnel_key action %d.\n",
50 params->tcft_action);
51 break;
52 }
53
54 return action;
55 }
56
57 static const struct nla_policy
58 enc_opts_policy[TCA_TUNNEL_KEY_ENC_OPTS_MAX + 1] = {
59 [TCA_TUNNEL_KEY_ENC_OPTS_GENEVE] = { .type = NLA_NESTED },
60 };
61
62 static const struct nla_policy
63 geneve_opt_policy[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_MAX + 1] = {
64 [TCA_TUNNEL_KEY_ENC_OPT_GENEVE_CLASS] = { .type = NLA_U16 },
65 [TCA_TUNNEL_KEY_ENC_OPT_GENEVE_TYPE] = { .type = NLA_U8 },
66 [TCA_TUNNEL_KEY_ENC_OPT_GENEVE_DATA] = { .type = NLA_BINARY,
67 .len = 128 },
68 };
69
70 static int
71 tunnel_key_copy_geneve_opt(const struct nlattr *nla, void *dst, int dst_len,
72 struct netlink_ext_ack *extack)
73 {
74 struct nlattr *tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_MAX + 1];
75 int err, data_len, opt_len;
76 u8 *data;
77
78 err = nla_parse_nested(tb, TCA_TUNNEL_KEY_ENC_OPT_GENEVE_MAX,
79 nla, geneve_opt_policy, extack);
80 if (err < 0)
81 return err;
82
83 if (!tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_CLASS] ||
84 !tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_TYPE] ||
85 !tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_DATA]) {
86 NL_SET_ERR_MSG(extack, "Missing tunnel key geneve option class, type or data");
87 return -EINVAL;
88 }
89
90 data = nla_data(tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_DATA]);
91 data_len = nla_len(tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_DATA]);
92 if (data_len < 4) {
93 NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is less than 4 bytes long");
94 return -ERANGE;
95 }
96 if (data_len % 4) {
97 NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is not a multiple of 4 bytes long");
98 return -ERANGE;
99 }
100
101 opt_len = sizeof(struct geneve_opt) + data_len;
102 if (dst) {
103 struct geneve_opt *opt = dst;
104
105 WARN_ON(dst_len < opt_len);
106
107 opt->opt_class =
108 nla_get_be16(tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_CLASS]);
109 opt->type = nla_get_u8(tb[TCA_TUNNEL_KEY_ENC_OPT_GENEVE_TYPE]);
110 opt->length = data_len / 4; /* length is in units of 4 bytes */
111 opt->r1 = 0;
112 opt->r2 = 0;
113 opt->r3 = 0;
114
115 memcpy(opt + 1, data, data_len);
116 }
117
118 return opt_len;
119 }
120
121 static int tunnel_key_copy_opts(const struct nlattr *nla, u8 *dst,
122 int dst_len, struct netlink_ext_ack *extack)
123 {
124 int err, rem, opt_len, len = nla_len(nla), opts_len = 0;
125 const struct nlattr *attr, *head = nla_data(nla);
126
127 err = nla_validate(head, len, TCA_TUNNEL_KEY_ENC_OPTS_MAX,
128 enc_opts_policy, extack);
129 if (err)
130 return err;
131
132 nla_for_each_attr(attr, head, len, rem) {
133 switch (nla_type(attr)) {
134 case TCA_TUNNEL_KEY_ENC_OPTS_GENEVE:
135 opt_len = tunnel_key_copy_geneve_opt(attr, dst,
136 dst_len, extack);
137 if (opt_len < 0)
138 return opt_len;
139 opts_len += opt_len;
140 if (dst) {
141 dst_len -= opt_len;
142 dst += opt_len;
143 }
144 break;
145 }
146 }
147
148 if (!opts_len) {
149 NL_SET_ERR_MSG(extack, "Empty list of tunnel options");
150 return -EINVAL;
151 }
152
153 if (rem > 0) {
154 NL_SET_ERR_MSG(extack, "Trailing data after parsing tunnel key options attributes");
155 return -EINVAL;
156 }
157
158 return opts_len;
159 }
160
161 static int tunnel_key_get_opts_len(struct nlattr *nla,
162 struct netlink_ext_ack *extack)
163 {
164 return tunnel_key_copy_opts(nla, NULL, 0, extack);
165 }
166
167 static int tunnel_key_opts_set(struct nlattr *nla, struct ip_tunnel_info *info,
168 int opts_len, struct netlink_ext_ack *extack)
169 {
170 info->options_len = opts_len;
171 switch (nla_type(nla_data(nla))) {
172 case TCA_TUNNEL_KEY_ENC_OPTS_GENEVE:
173 #if IS_ENABLED(CONFIG_INET)
174 info->key.tun_flags |= TUNNEL_GENEVE_OPT;
175 return tunnel_key_copy_opts(nla, ip_tunnel_info_opts(info),
176 opts_len, extack);
177 #else
178 return -EAFNOSUPPORT;
179 #endif
180 default:
181 NL_SET_ERR_MSG(extack, "Cannot set tunnel options for unknown tunnel type");
182 return -EINVAL;
183 }
184 }
185
186 static const struct nla_policy tunnel_key_policy[TCA_TUNNEL_KEY_MAX + 1] = {
187 [TCA_TUNNEL_KEY_PARMS] = { .len = sizeof(struct tc_tunnel_key) },
188 [TCA_TUNNEL_KEY_ENC_IPV4_SRC] = { .type = NLA_U32 },
189 [TCA_TUNNEL_KEY_ENC_IPV4_DST] = { .type = NLA_U32 },
190 [TCA_TUNNEL_KEY_ENC_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
191 [TCA_TUNNEL_KEY_ENC_IPV6_DST] = { .len = sizeof(struct in6_addr) },
192 [TCA_TUNNEL_KEY_ENC_KEY_ID] = { .type = NLA_U32 },
193 [TCA_TUNNEL_KEY_ENC_DST_PORT] = {.type = NLA_U16},
194 [TCA_TUNNEL_KEY_NO_CSUM] = { .type = NLA_U8 },
195 [TCA_TUNNEL_KEY_ENC_OPTS] = { .type = NLA_NESTED },
196 [TCA_TUNNEL_KEY_ENC_TOS] = { .type = NLA_U8 },
197 [TCA_TUNNEL_KEY_ENC_TTL] = { .type = NLA_U8 },
198 };
199
200 static int tunnel_key_init(struct net *net, struct nlattr *nla,
201 struct nlattr *est, struct tc_action **a,
202 int ovr, int bind, bool rtnl_held,
203 struct netlink_ext_ack *extack)
204 {
205 struct tc_action_net *tn = net_generic(net, tunnel_key_net_id);
206 struct nlattr *tb[TCA_TUNNEL_KEY_MAX + 1];
207 struct tcf_tunnel_key_params *params_new;
208 struct metadata_dst *metadata = NULL;
209 struct tc_tunnel_key *parm;
210 struct tcf_tunnel_key *t;
211 bool exists = false;
212 __be16 dst_port = 0;
213 int opts_len = 0;
214 __be64 key_id;
215 __be16 flags;
216 u8 tos, ttl;
217 int ret = 0;
218 int err;
219
220 if (!nla) {
221 NL_SET_ERR_MSG(extack, "Tunnel requires attributes to be passed");
222 return -EINVAL;
223 }
224
225 err = nla_parse_nested(tb, TCA_TUNNEL_KEY_MAX, nla, tunnel_key_policy,
226 extack);
227 if (err < 0) {
228 NL_SET_ERR_MSG(extack, "Failed to parse nested tunnel key attributes");
229 return err;
230 }
231
232 if (!tb[TCA_TUNNEL_KEY_PARMS]) {
233 NL_SET_ERR_MSG(extack, "Missing tunnel key parameters");
234 return -EINVAL;
235 }
236
237 parm = nla_data(tb[TCA_TUNNEL_KEY_PARMS]);
238 err = tcf_idr_check_alloc(tn, &parm->index, a, bind);
239 if (err < 0)
240 return err;
241 exists = err;
242 if (exists && bind)
243 return 0;
244
245 switch (parm->t_action) {
246 case TCA_TUNNEL_KEY_ACT_RELEASE:
247 break;
248 case TCA_TUNNEL_KEY_ACT_SET:
249 if (!tb[TCA_TUNNEL_KEY_ENC_KEY_ID]) {
250 NL_SET_ERR_MSG(extack, "Missing tunnel key id");
251 ret = -EINVAL;
252 goto err_out;
253 }
254
255 key_id = key32_to_tunnel_id(nla_get_be32(tb[TCA_TUNNEL_KEY_ENC_KEY_ID]));
256
257 flags = TUNNEL_KEY | TUNNEL_CSUM;
258 if (tb[TCA_TUNNEL_KEY_NO_CSUM] &&
259 nla_get_u8(tb[TCA_TUNNEL_KEY_NO_CSUM]))
260 flags &= ~TUNNEL_CSUM;
261
262 if (tb[TCA_TUNNEL_KEY_ENC_DST_PORT])
263 dst_port = nla_get_be16(tb[TCA_TUNNEL_KEY_ENC_DST_PORT]);
264
265 if (tb[TCA_TUNNEL_KEY_ENC_OPTS]) {
266 opts_len = tunnel_key_get_opts_len(tb[TCA_TUNNEL_KEY_ENC_OPTS],
267 extack);
268 if (opts_len < 0) {
269 ret = opts_len;
270 goto err_out;
271 }
272 }
273
274 tos = 0;
275 if (tb[TCA_TUNNEL_KEY_ENC_TOS])
276 tos = nla_get_u8(tb[TCA_TUNNEL_KEY_ENC_TOS]);
277 ttl = 0;
278 if (tb[TCA_TUNNEL_KEY_ENC_TTL])
279 ttl = nla_get_u8(tb[TCA_TUNNEL_KEY_ENC_TTL]);
280
281 if (tb[TCA_TUNNEL_KEY_ENC_IPV4_SRC] &&
282 tb[TCA_TUNNEL_KEY_ENC_IPV4_DST]) {
283 __be32 saddr;
284 __be32 daddr;
285
286 saddr = nla_get_in_addr(tb[TCA_TUNNEL_KEY_ENC_IPV4_SRC]);
287 daddr = nla_get_in_addr(tb[TCA_TUNNEL_KEY_ENC_IPV4_DST]);
288
289 metadata = __ip_tun_set_dst(saddr, daddr, tos, ttl,
290 dst_port, flags,
291 key_id, opts_len);
292 } else if (tb[TCA_TUNNEL_KEY_ENC_IPV6_SRC] &&
293 tb[TCA_TUNNEL_KEY_ENC_IPV6_DST]) {
294 struct in6_addr saddr;
295 struct in6_addr daddr;
296
297 saddr = nla_get_in6_addr(tb[TCA_TUNNEL_KEY_ENC_IPV6_SRC]);
298 daddr = nla_get_in6_addr(tb[TCA_TUNNEL_KEY_ENC_IPV6_DST]);
299
300 metadata = __ipv6_tun_set_dst(&saddr, &daddr, tos, ttl, dst_port,
301 0, flags,
302 key_id, 0);
303 } else {
304 NL_SET_ERR_MSG(extack, "Missing either ipv4 or ipv6 src and dst");
305 ret = -EINVAL;
306 goto err_out;
307 }
308
309 if (!metadata) {
310 NL_SET_ERR_MSG(extack, "Cannot allocate tunnel metadata dst");
311 ret = -ENOMEM;
312 goto err_out;
313 }
314
315 if (opts_len) {
316 ret = tunnel_key_opts_set(tb[TCA_TUNNEL_KEY_ENC_OPTS],
317 &metadata->u.tun_info,
318 opts_len, extack);
319 if (ret < 0)
320 goto err_out;
321 }
322
323 metadata->u.tun_info.mode |= IP_TUNNEL_INFO_TX;
324 break;
325 default:
326 NL_SET_ERR_MSG(extack, "Unknown tunnel key action");
327 ret = -EINVAL;
328 goto err_out;
329 }
330
331 if (!exists) {
332 ret = tcf_idr_create(tn, parm->index, est, a,
333 &act_tunnel_key_ops, bind, true);
334 if (ret) {
335 NL_SET_ERR_MSG(extack, "Cannot create TC IDR");
336 goto err_out;
337 }
338
339 ret = ACT_P_CREATED;
340 } else if (!ovr) {
341 tcf_idr_release(*a, bind);
342 NL_SET_ERR_MSG(extack, "TC IDR already exists");
343 return -EEXIST;
344 }
345
346 t = to_tunnel_key(*a);
347
348 params_new = kzalloc(sizeof(*params_new), GFP_KERNEL);
349 if (unlikely(!params_new)) {
350 tcf_idr_release(*a, bind);
351 NL_SET_ERR_MSG(extack, "Cannot allocate tunnel key parameters");
352 return -ENOMEM;
353 }
354 params_new->tcft_action = parm->t_action;
355 params_new->tcft_enc_metadata = metadata;
356
357 spin_lock_bh(&t->tcf_lock);
358 t->tcf_action = parm->action;
359 rcu_swap_protected(t->params, params_new,
360 lockdep_is_held(&t->tcf_lock));
361 spin_unlock_bh(&t->tcf_lock);
362 if (params_new)
363 kfree_rcu(params_new, rcu);
364
365 if (ret == ACT_P_CREATED)
366 tcf_idr_insert(tn, *a);
367
368 return ret;
369
370 err_out:
371 if (exists)
372 tcf_idr_release(*a, bind);
373 else
374 tcf_idr_cleanup(tn, parm->index);
375 return ret;
376 }
377
378 static void tunnel_key_release(struct tc_action *a)
379 {
380 struct tcf_tunnel_key *t = to_tunnel_key(a);
381 struct tcf_tunnel_key_params *params;
382
383 params = rcu_dereference_protected(t->params, 1);
384 if (params) {
385 if (params->tcft_action == TCA_TUNNEL_KEY_ACT_SET)
386 dst_release(&params->tcft_enc_metadata->dst);
387
388 kfree_rcu(params, rcu);
389 }
390 }
391
392 static int tunnel_key_geneve_opts_dump(struct sk_buff *skb,
393 const struct ip_tunnel_info *info)
394 {
395 int len = info->options_len;
396 u8 *src = (u8 *)(info + 1);
397 struct nlattr *start;
398
399 start = nla_nest_start(skb, TCA_TUNNEL_KEY_ENC_OPTS_GENEVE);
400 if (!start)
401 return -EMSGSIZE;
402
403 while (len > 0) {
404 struct geneve_opt *opt = (struct geneve_opt *)src;
405
406 if (nla_put_be16(skb, TCA_TUNNEL_KEY_ENC_OPT_GENEVE_CLASS,
407 opt->opt_class) ||
408 nla_put_u8(skb, TCA_TUNNEL_KEY_ENC_OPT_GENEVE_TYPE,
409 opt->type) ||
410 nla_put(skb, TCA_TUNNEL_KEY_ENC_OPT_GENEVE_DATA,
411 opt->length * 4, opt + 1))
412 return -EMSGSIZE;
413
414 len -= sizeof(struct geneve_opt) + opt->length * 4;
415 src += sizeof(struct geneve_opt) + opt->length * 4;
416 }
417
418 nla_nest_end(skb, start);
419 return 0;
420 }
421
422 static int tunnel_key_opts_dump(struct sk_buff *skb,
423 const struct ip_tunnel_info *info)
424 {
425 struct nlattr *start;
426 int err;
427
428 if (!info->options_len)
429 return 0;
430
431 start = nla_nest_start(skb, TCA_TUNNEL_KEY_ENC_OPTS);
432 if (!start)
433 return -EMSGSIZE;
434
435 if (info->key.tun_flags & TUNNEL_GENEVE_OPT) {
436 err = tunnel_key_geneve_opts_dump(skb, info);
437 if (err)
438 return err;
439 } else {
440 return -EINVAL;
441 }
442
443 nla_nest_end(skb, start);
444 return 0;
445 }
446
447 static int tunnel_key_dump_addresses(struct sk_buff *skb,
448 const struct ip_tunnel_info *info)
449 {
450 unsigned short family = ip_tunnel_info_af(info);
451
452 if (family == AF_INET) {
453 __be32 saddr = info->key.u.ipv4.src;
454 __be32 daddr = info->key.u.ipv4.dst;
455
456 if (!nla_put_in_addr(skb, TCA_TUNNEL_KEY_ENC_IPV4_SRC, saddr) &&
457 !nla_put_in_addr(skb, TCA_TUNNEL_KEY_ENC_IPV4_DST, daddr))
458 return 0;
459 }
460
461 if (family == AF_INET6) {
462 const struct in6_addr *saddr6 = &info->key.u.ipv6.src;
463 const struct in6_addr *daddr6 = &info->key.u.ipv6.dst;
464
465 if (!nla_put_in6_addr(skb,
466 TCA_TUNNEL_KEY_ENC_IPV6_SRC, saddr6) &&
467 !nla_put_in6_addr(skb,
468 TCA_TUNNEL_KEY_ENC_IPV6_DST, daddr6))
469 return 0;
470 }
471
472 return -EINVAL;
473 }
474
475 static int tunnel_key_dump(struct sk_buff *skb, struct tc_action *a,
476 int bind, int ref)
477 {
478 unsigned char *b = skb_tail_pointer(skb);
479 struct tcf_tunnel_key *t = to_tunnel_key(a);
480 struct tcf_tunnel_key_params *params;
481 struct tc_tunnel_key opt = {
482 .index = t->tcf_index,
483 .refcnt = refcount_read(&t->tcf_refcnt) - ref,
484 .bindcnt = atomic_read(&t->tcf_bindcnt) - bind,
485 };
486 struct tcf_t tm;
487
488 spin_lock_bh(&t->tcf_lock);
489 params = rcu_dereference_protected(t->params,
490 lockdep_is_held(&t->tcf_lock));
491 opt.action = t->tcf_action;
492 opt.t_action = params->tcft_action;
493
494 if (nla_put(skb, TCA_TUNNEL_KEY_PARMS, sizeof(opt), &opt))
495 goto nla_put_failure;
496
497 if (params->tcft_action == TCA_TUNNEL_KEY_ACT_SET) {
498 struct ip_tunnel_info *info =
499 &params->tcft_enc_metadata->u.tun_info;
500 struct ip_tunnel_key *key = &info->key;
501 __be32 key_id = tunnel_id_to_key32(key->tun_id);
502
503 if (nla_put_be32(skb, TCA_TUNNEL_KEY_ENC_KEY_ID, key_id) ||
504 tunnel_key_dump_addresses(skb,
505 &params->tcft_enc_metadata->u.tun_info) ||
506 nla_put_be16(skb, TCA_TUNNEL_KEY_ENC_DST_PORT, key->tp_dst) ||
507 nla_put_u8(skb, TCA_TUNNEL_KEY_NO_CSUM,
508 !(key->tun_flags & TUNNEL_CSUM)) ||
509 tunnel_key_opts_dump(skb, info))
510 goto nla_put_failure;
511
512 if (key->tos && nla_put_u8(skb, TCA_TUNNEL_KEY_ENC_TOS, key->tos))
513 goto nla_put_failure;
514
515 if (key->ttl && nla_put_u8(skb, TCA_TUNNEL_KEY_ENC_TTL, key->ttl))
516 goto nla_put_failure;
517 }
518
519 tcf_tm_dump(&tm, &t->tcf_tm);
520 if (nla_put_64bit(skb, TCA_TUNNEL_KEY_TM, sizeof(tm),
521 &tm, TCA_TUNNEL_KEY_PAD))
522 goto nla_put_failure;
523 spin_unlock_bh(&t->tcf_lock);
524
525 return skb->len;
526
527 nla_put_failure:
528 spin_unlock_bh(&t->tcf_lock);
529 nlmsg_trim(skb, b);
530 return -1;
531 }
532
533 static int tunnel_key_walker(struct net *net, struct sk_buff *skb,
534 struct netlink_callback *cb, int type,
535 const struct tc_action_ops *ops,
536 struct netlink_ext_ack *extack)
537 {
538 struct tc_action_net *tn = net_generic(net, tunnel_key_net_id);
539
540 return tcf_generic_walker(tn, skb, cb, type, ops, extack);
541 }
542
543 static int tunnel_key_search(struct net *net, struct tc_action **a, u32 index,
544 struct netlink_ext_ack *extack)
545 {
546 struct tc_action_net *tn = net_generic(net, tunnel_key_net_id);
547
548 return tcf_idr_search(tn, a, index);
549 }
550
551 static int tunnel_key_delete(struct net *net, u32 index)
552 {
553 struct tc_action_net *tn = net_generic(net, tunnel_key_net_id);
554
555 return tcf_idr_delete_index(tn, index);
556 }
557
558 static struct tc_action_ops act_tunnel_key_ops = {
559 .kind = "tunnel_key",
560 .type = TCA_ACT_TUNNEL_KEY,
561 .owner = THIS_MODULE,
562 .act = tunnel_key_act,
563 .dump = tunnel_key_dump,
564 .init = tunnel_key_init,
565 .cleanup = tunnel_key_release,
566 .walk = tunnel_key_walker,
567 .lookup = tunnel_key_search,
568 .delete = tunnel_key_delete,
569 .size = sizeof(struct tcf_tunnel_key),
570 };
571
572 static __net_init int tunnel_key_init_net(struct net *net)
573 {
574 struct tc_action_net *tn = net_generic(net, tunnel_key_net_id);
575
576 return tc_action_net_init(tn, &act_tunnel_key_ops);
577 }
578
579 static void __net_exit tunnel_key_exit_net(struct list_head *net_list)
580 {
581 tc_action_net_exit(net_list, tunnel_key_net_id);
582 }
583
584 static struct pernet_operations tunnel_key_net_ops = {
585 .init = tunnel_key_init_net,
586 .exit_batch = tunnel_key_exit_net,
587 .id = &tunnel_key_net_id,
588 .size = sizeof(struct tc_action_net),
589 };
590
591 static int __init tunnel_key_init_module(void)
592 {
593 return tcf_register_action(&act_tunnel_key_ops, &tunnel_key_net_ops);
594 }
595
596 static void __exit tunnel_key_cleanup_module(void)
597 {
598 tcf_unregister_action(&act_tunnel_key_ops, &tunnel_key_net_ops);
599 }
600
601 module_init(tunnel_key_init_module);
602 module_exit(tunnel_key_cleanup_module);
603
604 MODULE_AUTHOR("Amir Vadai <amir@vadai.me>");
605 MODULE_DESCRIPTION("ip tunnel manipulation actions");
606 MODULE_LICENSE("GPL v2");
Linux with added FPC-III support