Commit | Line | Data |
---|---|---|
2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 | 2 | /* |
0c6965dd | 3 | * net/sched/act_ipt.c iptables target interface |
1da177e4 LT |
4 | * |
5 | *TODO: Add other tables. For now we only support the ipv4 table targets | |
6 | * | |
0dcffd09 | 7 | * Copyright: Jamal Hadi Salim (2002-13) |
1da177e4 LT |
8 | */ |
9 | ||
1da177e4 LT |
10 | #include <linux/types.h> |
11 | #include <linux/kernel.h> | |
1da177e4 | 12 | #include <linux/string.h> |
1da177e4 | 13 | #include <linux/errno.h> |
1da177e4 LT |
14 | #include <linux/skbuff.h> |
15 | #include <linux/rtnetlink.h> | |
16 | #include <linux/module.h> | |
17 | #include <linux/init.h> | |
5a0e3ad6 | 18 | #include <linux/slab.h> |
dc5fc579 | 19 | #include <net/netlink.h> |
1da177e4 LT |
20 | #include <net/pkt_sched.h> |
21 | #include <linux/tc_act/tc_ipt.h> | |
22 | #include <net/tc_act/tc_ipt.h> | |
871cf386 | 23 | #include <net/tc_wrapper.h> |
93d75d47 | 24 | #include <net/ip.h> |
1da177e4 LT |
25 | |
26 | #include <linux/netfilter_ipv4/ip_tables.h> | |
27 | ||
1da177e4 | 28 | |
a85a970a | 29 | static struct tc_action_ops act_ipt_ops; |
a85a970a | 30 | static struct tc_action_ops act_xt_ops; |
ddf97ccd | 31 | |
ec0acb09 XL |
32 | static int ipt_init_target(struct net *net, struct xt_entry_target *t, |
33 | char *table, unsigned int hook) | |
1da177e4 | 34 | { |
af5d6dc2 | 35 | struct xt_tgchk_param par; |
e60a13e0 | 36 | struct xt_target *target; |
4f8a881a | 37 | struct ipt_entry e = {}; |
1da177e4 LT |
38 | int ret = 0; |
39 | ||
239a87c8 PM |
40 | target = xt_request_find_target(AF_INET, t->u.user.name, |
41 | t->u.user.revision); | |
d2a7b6ba JE |
42 | if (IS_ERR(target)) |
43 | return PTR_ERR(target); | |
1da177e4 | 44 | |
1da177e4 | 45 | t->u.kernel.target = target; |
96d97030 | 46 | memset(&par, 0, sizeof(par)); |
ec0acb09 | 47 | par.net = net; |
af5d6dc2 | 48 | par.table = table; |
4f8a881a | 49 | par.entryinfo = &e; |
af5d6dc2 JE |
50 | par.target = target; |
51 | par.targinfo = t->data; | |
b4ee9338 | 52 | par.hook_mask = 1 << hook; |
916a917d | 53 | par.family = NFPROTO_IPV4; |
1da177e4 | 54 | |
916a917d | 55 | ret = xt_check_target(&par, t->u.target_size - sizeof(*t), 0, false); |
367c6790 | 56 | if (ret < 0) { |
239a87c8 | 57 | module_put(t->u.kernel.target->me); |
18118cdb | 58 | return ret; |
239a87c8 | 59 | } |
367c6790 | 60 | return 0; |
1da177e4 LT |
61 | } |
62 | ||
981471bd | 63 | static void ipt_destroy_target(struct xt_entry_target *t, struct net *net) |
1da177e4 | 64 | { |
a2df1648 JE |
65 | struct xt_tgdtor_param par = { |
66 | .target = t->u.kernel.target, | |
67 | .targinfo = t->data, | |
44ef548f | 68 | .family = NFPROTO_IPV4, |
981471bd | 69 | .net = net, |
a2df1648 JE |
70 | }; |
71 | if (par.target->destroy != NULL) | |
72 | par.target->destroy(&par); | |
73 | module_put(par.target->me); | |
1da177e4 LT |
74 | } |
75 | ||
9a63b255 | 76 | static void tcf_ipt_release(struct tc_action *a) |
1da177e4 | 77 | { |
86062033 | 78 | struct tcf_ipt *ipt = to_ipt(a); |
1e46ef17 DC |
79 | |
80 | if (ipt->tcfi_t) { | |
981471bd | 81 | ipt_destroy_target(ipt->tcfi_t, a->idrinfo->net); |
1e46ef17 DC |
82 | kfree(ipt->tcfi_t); |
83 | } | |
a5b5c958 | 84 | kfree(ipt->tcfi_tname); |
1da177e4 LT |
85 | } |
86 | ||
53b2bf3f PM |
87 | static const struct nla_policy ipt_policy[TCA_IPT_MAX + 1] = { |
88 | [TCA_IPT_TABLE] = { .type = NLA_STRING, .len = IFNAMSIZ }, | |
b4ee9338 FW |
89 | [TCA_IPT_HOOK] = NLA_POLICY_RANGE(NLA_U32, NF_INET_PRE_ROUTING, |
90 | NF_INET_NUMHOOKS), | |
53b2bf3f | 91 | [TCA_IPT_INDEX] = { .type = NLA_U32 }, |
87a2e70d | 92 | [TCA_IPT_TARG] = { .len = sizeof(struct xt_entry_target) }, |
53b2bf3f PM |
93 | }; |
94 | ||
ec0acb09 | 95 | static int __tcf_ipt_init(struct net *net, unsigned int id, struct nlattr *nla, |
a85a970a | 96 | struct nlattr *est, struct tc_action **a, |
695176bf | 97 | const struct tc_action_ops *ops, |
abbb0d33 | 98 | struct tcf_proto *tp, u32 flags) |
1da177e4 | 99 | { |
ec0acb09 | 100 | struct tc_action_net *tn = net_generic(net, id); |
695176bf | 101 | bool bind = flags & TCA_ACT_FLAGS_BIND; |
7ba699c6 | 102 | struct nlattr *tb[TCA_IPT_MAX + 1]; |
e9ce1cd3 | 103 | struct tcf_ipt *ipt; |
87a2e70d | 104 | struct xt_entry_target *td, *t; |
1da177e4 | 105 | char *tname; |
b2313077 WC |
106 | bool exists = false; |
107 | int ret = 0, err; | |
1da177e4 LT |
108 | u32 hook = 0; |
109 | u32 index = 0; | |
110 | ||
cee63723 | 111 | if (nla == NULL) |
1da177e4 LT |
112 | return -EINVAL; |
113 | ||
8cb08174 JB |
114 | err = nla_parse_nested_deprecated(tb, TCA_IPT_MAX, nla, ipt_policy, |
115 | NULL); | |
cee63723 PM |
116 | if (err < 0) |
117 | return err; | |
118 | ||
a57f19d3 JHS |
119 | if (tb[TCA_IPT_INDEX] != NULL) |
120 | index = nla_get_u32(tb[TCA_IPT_INDEX]); | |
121 | ||
0190c1d4 VB |
122 | err = tcf_idr_check_alloc(tn, &index, a, bind); |
123 | if (err < 0) | |
124 | return err; | |
125 | exists = err; | |
a57f19d3 JHS |
126 | if (exists && bind) |
127 | return 0; | |
128 | ||
129 | if (tb[TCA_IPT_HOOK] == NULL || tb[TCA_IPT_TARG] == NULL) { | |
130 | if (exists) | |
65a206c0 | 131 | tcf_idr_release(*a, bind); |
0190c1d4 VB |
132 | else |
133 | tcf_idr_cleanup(tn, index); | |
1da177e4 | 134 | return -EINVAL; |
a57f19d3 | 135 | } |
53b2bf3f | 136 | |
87a2e70d | 137 | td = (struct xt_entry_target *)nla_data(tb[TCA_IPT_TARG]); |
aeadd93f | 138 | if (nla_len(tb[TCA_IPT_TARG]) != td->u.target_size) { |
d15eccea | 139 | if (exists) |
65a206c0 | 140 | tcf_idr_release(*a, bind); |
0190c1d4 VB |
141 | else |
142 | tcf_idr_cleanup(tn, index); | |
1da177e4 | 143 | return -EINVAL; |
d15eccea | 144 | } |
1da177e4 | 145 | |
d15eccea | 146 | if (!exists) { |
65a206c0 | 147 | ret = tcf_idr_create(tn, index, est, a, ops, bind, |
40bd094d | 148 | false, flags); |
0190c1d4 VB |
149 | if (ret) { |
150 | tcf_idr_cleanup(tn, index); | |
86062033 | 151 | return ret; |
0190c1d4 | 152 | } |
1da177e4 LT |
153 | ret = ACT_P_CREATED; |
154 | } else { | |
1a29321e JHS |
155 | if (bind)/* dont override defaults */ |
156 | return 0; | |
1a29321e | 157 | |
695176bf | 158 | if (!(flags & TCA_ACT_FLAGS_REPLACE)) { |
4e8ddd7f | 159 | tcf_idr_release(*a, bind); |
1da177e4 | 160 | return -EEXIST; |
4e8ddd7f | 161 | } |
1da177e4 | 162 | } |
b4ee9338 FW |
163 | |
164 | err = -EINVAL; | |
1587bac4 | 165 | hook = nla_get_u32(tb[TCA_IPT_HOOK]); |
b4ee9338 FW |
166 | switch (hook) { |
167 | case NF_INET_PRE_ROUTING: | |
168 | break; | |
169 | case NF_INET_POST_ROUTING: | |
170 | break; | |
171 | default: | |
172 | goto err1; | |
173 | } | |
174 | ||
175 | if (tb[TCA_IPT_TABLE]) { | |
176 | /* mangle only for now */ | |
177 | if (nla_strcmp(tb[TCA_IPT_TABLE], "mangle")) | |
178 | goto err1; | |
179 | } | |
1da177e4 | 180 | |
b4ee9338 | 181 | tname = kstrdup("mangle", GFP_KERNEL); |
e9ce1cd3 | 182 | if (unlikely(!tname)) |
1da177e4 | 183 | goto err1; |
1da177e4 | 184 | |
c7b1b249 | 185 | t = kmemdup(td, td->u.target_size, GFP_KERNEL); |
e9ce1cd3 | 186 | if (unlikely(!t)) |
1da177e4 | 187 | goto err2; |
1da177e4 | 188 | |
ec0acb09 | 189 | err = ipt_init_target(net, t, tname, hook); |
cc7ec456 | 190 | if (err < 0) |
1da177e4 LT |
191 | goto err3; |
192 | ||
a85a970a WC |
193 | ipt = to_ipt(*a); |
194 | ||
e9ce1cd3 | 195 | spin_lock_bh(&ipt->tcf_lock); |
1da177e4 | 196 | if (ret != ACT_P_CREATED) { |
981471bd | 197 | ipt_destroy_target(ipt->tcfi_t, net); |
e9ce1cd3 DM |
198 | kfree(ipt->tcfi_tname); |
199 | kfree(ipt->tcfi_t); | |
1da177e4 | 200 | } |
e9ce1cd3 DM |
201 | ipt->tcfi_tname = tname; |
202 | ipt->tcfi_t = t; | |
203 | ipt->tcfi_hook = hook; | |
204 | spin_unlock_bh(&ipt->tcf_lock); | |
1da177e4 LT |
205 | return ret; |
206 | ||
207 | err3: | |
208 | kfree(t); | |
209 | err2: | |
210 | kfree(tname); | |
211 | err1: | |
8f67c90e | 212 | tcf_idr_release(*a, bind); |
1da177e4 LT |
213 | return err; |
214 | } | |
215 | ||
ddf97ccd | 216 | static int tcf_ipt_init(struct net *net, struct nlattr *nla, |
695176bf CW |
217 | struct nlattr *est, struct tc_action **a, |
218 | struct tcf_proto *tp, | |
abbb0d33 | 219 | u32 flags, struct netlink_ext_ack *extack) |
ddf97ccd | 220 | { |
acd0a7ab ZS |
221 | return __tcf_ipt_init(net, act_ipt_ops.net_id, nla, est, |
222 | a, &act_ipt_ops, tp, flags); | |
ddf97ccd WC |
223 | } |
224 | ||
225 | static int tcf_xt_init(struct net *net, struct nlattr *nla, | |
695176bf CW |
226 | struct nlattr *est, struct tc_action **a, |
227 | struct tcf_proto *tp, | |
abbb0d33 | 228 | u32 flags, struct netlink_ext_ack *extack) |
ddf97ccd | 229 | { |
acd0a7ab ZS |
230 | return __tcf_ipt_init(net, act_xt_ops.net_id, nla, est, |
231 | a, &act_xt_ops, tp, flags); | |
ddf97ccd WC |
232 | } |
233 | ||
b2dc32dc FW |
234 | static bool tcf_ipt_act_check(struct sk_buff *skb) |
235 | { | |
236 | const struct iphdr *iph; | |
237 | unsigned int nhoff, len; | |
238 | ||
239 | if (!pskb_may_pull(skb, sizeof(struct iphdr))) | |
240 | return false; | |
241 | ||
242 | nhoff = skb_network_offset(skb); | |
243 | iph = ip_hdr(skb); | |
244 | if (iph->ihl < 5 || iph->version != 4) | |
245 | return false; | |
246 | ||
247 | len = skb_ip_totlen(skb); | |
248 | if (skb->len < nhoff + len || len < (iph->ihl * 4u)) | |
249 | return false; | |
250 | ||
251 | return pskb_may_pull(skb, iph->ihl * 4u); | |
252 | } | |
253 | ||
871cf386 PT |
254 | TC_INDIRECT_SCOPE int tcf_ipt_act(struct sk_buff *skb, |
255 | const struct tc_action *a, | |
256 | struct tcf_result *res) | |
1da177e4 | 257 | { |
93d75d47 | 258 | char saved_cb[sizeof_field(struct sk_buff, cb)]; |
1da177e4 | 259 | int ret = 0, result = 0; |
a85a970a | 260 | struct tcf_ipt *ipt = to_ipt(a); |
4b560b44 | 261 | struct xt_action_param par; |
613dbd95 PNA |
262 | struct nf_hook_state state = { |
263 | .net = dev_net(skb->dev), | |
264 | .in = skb->dev, | |
265 | .hook = ipt->tcfi_hook, | |
266 | .pf = NFPROTO_IPV4, | |
267 | }; | |
1da177e4 | 268 | |
b2dc32dc FW |
269 | if (skb_protocol(skb, false) != htons(ETH_P_IP)) |
270 | return TC_ACT_UNSPEC; | |
271 | ||
14bbd6a5 PS |
272 | if (skb_unclone(skb, GFP_ATOMIC)) |
273 | return TC_ACT_UNSPEC; | |
1da177e4 | 274 | |
b2dc32dc FW |
275 | if (!tcf_ipt_act_check(skb)) |
276 | return TC_ACT_UNSPEC; | |
277 | ||
278 | if (state.hook == NF_INET_POST_ROUTING) { | |
279 | if (!skb_dst(skb)) | |
280 | return TC_ACT_UNSPEC; | |
281 | ||
282 | state.out = skb->dev; | |
283 | } | |
284 | ||
93d75d47 FW |
285 | memcpy(saved_cb, skb->cb, sizeof(saved_cb)); |
286 | ||
e9ce1cd3 | 287 | spin_lock(&ipt->tcf_lock); |
1da177e4 | 288 | |
9c4a4e48 | 289 | tcf_lastuse_update(&ipt->tcf_tm); |
bfe0d029 | 290 | bstats_update(&ipt->tcf_bstats, skb); |
1da177e4 LT |
291 | |
292 | /* yes, we have to worry about both in and out dev | |
cc7ec456 ED |
293 | * worry later - danger - this API seems to have changed |
294 | * from earlier kernels | |
295 | */ | |
613dbd95 | 296 | par.state = &state; |
7eb35586 JE |
297 | par.target = ipt->tcfi_t->u.kernel.target; |
298 | par.targinfo = ipt->tcfi_t->data; | |
93d75d47 FW |
299 | |
300 | memset(IPCB(skb), 0, sizeof(struct inet_skb_parm)); | |
301 | ||
7eb35586 JE |
302 | ret = par.target->target(skb, &par); |
303 | ||
1da177e4 LT |
304 | switch (ret) { |
305 | case NF_ACCEPT: | |
306 | result = TC_ACT_OK; | |
307 | break; | |
308 | case NF_DROP: | |
309 | result = TC_ACT_SHOT; | |
e9ce1cd3 | 310 | ipt->tcf_qstats.drops++; |
1da177e4 | 311 | break; |
243bf6e2 | 312 | case XT_CONTINUE: |
1da177e4 LT |
313 | result = TC_ACT_PIPE; |
314 | break; | |
315 | default: | |
e87cc472 JP |
316 | net_notice_ratelimited("tc filter: Bogus netfilter code %d assume ACCEPT\n", |
317 | ret); | |
95df1b16 | 318 | result = TC_ACT_OK; |
1da177e4 LT |
319 | break; |
320 | } | |
e9ce1cd3 | 321 | spin_unlock(&ipt->tcf_lock); |
93d75d47 FW |
322 | |
323 | memcpy(skb->cb, saved_cb, sizeof(skb->cb)); | |
324 | ||
1da177e4 LT |
325 | return result; |
326 | ||
327 | } | |
328 | ||
0b0f43fe JHS |
329 | static int tcf_ipt_dump(struct sk_buff *skb, struct tc_action *a, int bind, |
330 | int ref) | |
1da177e4 | 331 | { |
27a884dc | 332 | unsigned char *b = skb_tail_pointer(skb); |
a85a970a | 333 | struct tcf_ipt *ipt = to_ipt(a); |
87a2e70d | 334 | struct xt_entry_target *t; |
1da177e4 LT |
335 | struct tcf_t tm; |
336 | struct tc_cnt c; | |
1da177e4 LT |
337 | |
338 | /* for simple targets kernel size == user size | |
cc7ec456 ED |
339 | * user name = target name |
340 | * for foolproof you need to not assume this | |
341 | */ | |
1da177e4 | 342 | |
ff25276d | 343 | spin_lock_bh(&ipt->tcf_lock); |
c7b1b249 | 344 | t = kmemdup(ipt->tcfi_t, ipt->tcfi_t->u.user.target_size, GFP_ATOMIC); |
e9ce1cd3 | 345 | if (unlikely(!t)) |
7ba699c6 | 346 | goto nla_put_failure; |
1da177e4 | 347 | |
036bb443 VB |
348 | c.bindcnt = atomic_read(&ipt->tcf_bindcnt) - bind; |
349 | c.refcnt = refcount_read(&ipt->tcf_refcnt) - ref; | |
e9ce1cd3 DM |
350 | strcpy(t->u.user.name, ipt->tcfi_t->u.kernel.target->name); |
351 | ||
1b34ec43 DM |
352 | if (nla_put(skb, TCA_IPT_TARG, ipt->tcfi_t->u.user.target_size, t) || |
353 | nla_put_u32(skb, TCA_IPT_INDEX, ipt->tcf_index) || | |
354 | nla_put_u32(skb, TCA_IPT_HOOK, ipt->tcfi_hook) || | |
355 | nla_put(skb, TCA_IPT_CNT, sizeof(struct tc_cnt), &c) || | |
356 | nla_put_string(skb, TCA_IPT_TABLE, ipt->tcfi_tname)) | |
357 | goto nla_put_failure; | |
48d8ee16 JHS |
358 | |
359 | tcf_tm_dump(&tm, &ipt->tcf_tm); | |
9854518e | 360 | if (nla_put_64bit(skb, TCA_IPT_TM, sizeof(tm), &tm, TCA_IPT_PAD)) |
1b34ec43 | 361 | goto nla_put_failure; |
48d8ee16 | 362 | |
ff25276d | 363 | spin_unlock_bh(&ipt->tcf_lock); |
1da177e4 LT |
364 | kfree(t); |
365 | return skb->len; | |
366 | ||
7ba699c6 | 367 | nla_put_failure: |
ff25276d | 368 | spin_unlock_bh(&ipt->tcf_lock); |
dc5fc579 | 369 | nlmsg_trim(skb, b); |
1da177e4 LT |
370 | kfree(t); |
371 | return -1; | |
372 | } | |
373 | ||
374 | static struct tc_action_ops act_ipt_ops = { | |
375 | .kind = "ipt", | |
eddd2cf1 | 376 | .id = TCA_ID_IPT, |
1da177e4 | 377 | .owner = THIS_MODULE, |
11b9695b | 378 | .act = tcf_ipt_act, |
1da177e4 | 379 | .dump = tcf_ipt_dump, |
86062033 | 380 | .cleanup = tcf_ipt_release, |
1da177e4 | 381 | .init = tcf_ipt_init, |
a85a970a | 382 | .size = sizeof(struct tcf_ipt), |
ddf97ccd WC |
383 | }; |
384 | ||
385 | static __net_init int ipt_init_net(struct net *net) | |
386 | { | |
acd0a7ab | 387 | struct tc_action_net *tn = net_generic(net, act_ipt_ops.net_id); |
ddf97ccd | 388 | |
981471bd | 389 | return tc_action_net_init(net, tn, &act_ipt_ops); |
ddf97ccd WC |
390 | } |
391 | ||
039af9c6 | 392 | static void __net_exit ipt_exit_net(struct list_head *net_list) |
ddf97ccd | 393 | { |
acd0a7ab | 394 | tc_action_net_exit(net_list, act_ipt_ops.net_id); |
ddf97ccd WC |
395 | } |
396 | ||
397 | static struct pernet_operations ipt_net_ops = { | |
398 | .init = ipt_init_net, | |
039af9c6 | 399 | .exit_batch = ipt_exit_net, |
acd0a7ab | 400 | .id = &act_ipt_ops.net_id, |
ddf97ccd | 401 | .size = sizeof(struct tc_action_net), |
1da177e4 LT |
402 | }; |
403 | ||
0dcffd09 JHS |
404 | static struct tc_action_ops act_xt_ops = { |
405 | .kind = "xt", | |
eddd2cf1 | 406 | .id = TCA_ID_XT, |
0dcffd09 | 407 | .owner = THIS_MODULE, |
11b9695b | 408 | .act = tcf_ipt_act, |
0dcffd09 | 409 | .dump = tcf_ipt_dump, |
86062033 | 410 | .cleanup = tcf_ipt_release, |
ddf97ccd | 411 | .init = tcf_xt_init, |
a85a970a | 412 | .size = sizeof(struct tcf_ipt), |
ddf97ccd WC |
413 | }; |
414 | ||
415 | static __net_init int xt_init_net(struct net *net) | |
416 | { | |
acd0a7ab | 417 | struct tc_action_net *tn = net_generic(net, act_xt_ops.net_id); |
ddf97ccd | 418 | |
981471bd | 419 | return tc_action_net_init(net, tn, &act_xt_ops); |
ddf97ccd WC |
420 | } |
421 | ||
039af9c6 | 422 | static void __net_exit xt_exit_net(struct list_head *net_list) |
ddf97ccd | 423 | { |
acd0a7ab | 424 | tc_action_net_exit(net_list, act_xt_ops.net_id); |
ddf97ccd WC |
425 | } |
426 | ||
427 | static struct pernet_operations xt_net_ops = { | |
428 | .init = xt_init_net, | |
039af9c6 | 429 | .exit_batch = xt_exit_net, |
acd0a7ab | 430 | .id = &act_xt_ops.net_id, |
ddf97ccd | 431 | .size = sizeof(struct tc_action_net), |
0dcffd09 JHS |
432 | }; |
433 | ||
434 | MODULE_AUTHOR("Jamal Hadi Salim(2002-13)"); | |
1da177e4 LT |
435 | MODULE_DESCRIPTION("Iptables target actions"); |
436 | MODULE_LICENSE("GPL"); | |
0dcffd09 | 437 | MODULE_ALIAS("act_xt"); |
1da177e4 | 438 | |
e9ce1cd3 | 439 | static int __init ipt_init_module(void) |
1da177e4 | 440 | { |
4f1e9d89 | 441 | int ret1, ret2; |
369ba567 | 442 | |
ddf97ccd | 443 | ret1 = tcf_register_action(&act_xt_ops, &xt_net_ops); |
0dcffd09 | 444 | if (ret1 < 0) |
ddf97ccd WC |
445 | pr_err("Failed to load xt action\n"); |
446 | ||
447 | ret2 = tcf_register_action(&act_ipt_ops, &ipt_net_ops); | |
0dcffd09 | 448 | if (ret2 < 0) |
ddf97ccd | 449 | pr_err("Failed to load ipt action\n"); |
0dcffd09 | 450 | |
369ba567 | 451 | if (ret1 < 0 && ret2 < 0) { |
0dcffd09 | 452 | return ret1; |
369ba567 | 453 | } else |
0dcffd09 | 454 | return 0; |
1da177e4 LT |
455 | } |
456 | ||
e9ce1cd3 | 457 | static void __exit ipt_cleanup_module(void) |
1da177e4 | 458 | { |
ddf97ccd WC |
459 | tcf_unregister_action(&act_ipt_ops, &ipt_net_ops); |
460 | tcf_unregister_action(&act_xt_ops, &xt_net_ops); | |
1da177e4 LT |
461 | } |
462 | ||
463 | module_init(ipt_init_module); | |
464 | module_exit(ipt_cleanup_module); |