Commit | Line | Data |
---|---|---|
9fb9cbb1 YK |
1 | /* |
2 | * Connection tracking protocol helper module for SCTP. | |
601e68e1 | 3 | * |
f229f6ce PM |
4 | * Copyright (c) 2004 Kiran Kumar Immidi <immidi_kiran@yahoo.com> |
5 | * Copyright (c) 2004-2012 Patrick McHardy <kaber@trash.net> | |
6 | * | |
601e68e1 | 7 | * SCTP is defined in RFC 2960. References to various sections in this code |
9fb9cbb1 | 8 | * are to this RFC. |
601e68e1 | 9 | * |
9fb9cbb1 YK |
10 | * This program is free software; you can redistribute it and/or modify |
11 | * it under the terms of the GNU General Public License version 2 as | |
12 | * published by the Free Software Foundation. | |
9fb9cbb1 YK |
13 | */ |
14 | ||
15 | #include <linux/types.h> | |
9fb9cbb1 YK |
16 | #include <linux/timer.h> |
17 | #include <linux/netfilter.h> | |
9fb9cbb1 YK |
18 | #include <linux/in.h> |
19 | #include <linux/ip.h> | |
20 | #include <linux/sctp.h> | |
21 | #include <linux/string.h> | |
22 | #include <linux/seq_file.h> | |
40a839fd YK |
23 | #include <linux/spinlock.h> |
24 | #include <linux/interrupt.h> | |
cf6e007e | 25 | #include <net/sctp/checksum.h> |
9fb9cbb1 | 26 | |
cf6e007e | 27 | #include <net/netfilter/nf_log.h> |
9fb9cbb1 | 28 | #include <net/netfilter/nf_conntrack.h> |
605dcad6 | 29 | #include <net/netfilter/nf_conntrack_l4proto.h> |
f6180121 | 30 | #include <net/netfilter/nf_conntrack_ecache.h> |
c779e849 | 31 | #include <net/netfilter/nf_conntrack_timeout.h> |
9fb9cbb1 | 32 | |
9fb9cbb1 | 33 | /* FIXME: Examine ipfilter's timeouts and conntrack transitions more |
601e68e1 | 34 | closely. They're more complex. --RR |
9fb9cbb1 YK |
35 | |
36 | And so for me for SCTP :D -Kiran */ | |
37 | ||
12c33aa2 | 38 | static const char *const sctp_conntrack_names[] = { |
9fb9cbb1 YK |
39 | "NONE", |
40 | "CLOSED", | |
41 | "COOKIE_WAIT", | |
42 | "COOKIE_ECHOED", | |
43 | "ESTABLISHED", | |
44 | "SHUTDOWN_SENT", | |
45 | "SHUTDOWN_RECD", | |
46 | "SHUTDOWN_ACK_SENT", | |
d7ee3519 MK |
47 | "HEARTBEAT_SENT", |
48 | "HEARTBEAT_ACKED", | |
9fb9cbb1 YK |
49 | }; |
50 | ||
51 | #define SECS * HZ | |
52 | #define MINS * 60 SECS | |
53 | #define HOURS * 60 MINS | |
54 | #define DAYS * 24 HOURS | |
55 | ||
2c9e8637 | 56 | static const unsigned int sctp_timeouts[SCTP_CONNTRACK_MAX] = { |
86c0bf40 PM |
57 | [SCTP_CONNTRACK_CLOSED] = 10 SECS, |
58 | [SCTP_CONNTRACK_COOKIE_WAIT] = 3 SECS, | |
59 | [SCTP_CONNTRACK_COOKIE_ECHOED] = 3 SECS, | |
60 | [SCTP_CONNTRACK_ESTABLISHED] = 5 DAYS, | |
61 | [SCTP_CONNTRACK_SHUTDOWN_SENT] = 300 SECS / 1000, | |
62 | [SCTP_CONNTRACK_SHUTDOWN_RECD] = 300 SECS / 1000, | |
63 | [SCTP_CONNTRACK_SHUTDOWN_ACK_SENT] = 3 SECS, | |
d7ee3519 MK |
64 | [SCTP_CONNTRACK_HEARTBEAT_SENT] = 30 SECS, |
65 | [SCTP_CONNTRACK_HEARTBEAT_ACKED] = 210 SECS, | |
86c0bf40 | 66 | }; |
9fb9cbb1 YK |
67 | |
68 | #define sNO SCTP_CONNTRACK_NONE | |
69 | #define sCL SCTP_CONNTRACK_CLOSED | |
70 | #define sCW SCTP_CONNTRACK_COOKIE_WAIT | |
71 | #define sCE SCTP_CONNTRACK_COOKIE_ECHOED | |
72 | #define sES SCTP_CONNTRACK_ESTABLISHED | |
73 | #define sSS SCTP_CONNTRACK_SHUTDOWN_SENT | |
74 | #define sSR SCTP_CONNTRACK_SHUTDOWN_RECD | |
75 | #define sSA SCTP_CONNTRACK_SHUTDOWN_ACK_SENT | |
d7ee3519 MK |
76 | #define sHS SCTP_CONNTRACK_HEARTBEAT_SENT |
77 | #define sHA SCTP_CONNTRACK_HEARTBEAT_ACKED | |
9fb9cbb1 YK |
78 | #define sIV SCTP_CONNTRACK_MAX |
79 | ||
601e68e1 | 80 | /* |
9fb9cbb1 YK |
81 | These are the descriptions of the states: |
82 | ||
601e68e1 | 83 | NOTE: These state names are tantalizingly similar to the states of an |
9fb9cbb1 | 84 | SCTP endpoint. But the interpretation of the states is a little different, |
601e68e1 | 85 | considering that these are the states of the connection and not of an end |
9fb9cbb1 YK |
86 | point. Please note the subtleties. -Kiran |
87 | ||
88 | NONE - Nothing so far. | |
601e68e1 YH |
89 | COOKIE WAIT - We have seen an INIT chunk in the original direction, or also |
90 | an INIT_ACK chunk in the reply direction. | |
9fb9cbb1 YK |
91 | COOKIE ECHOED - We have seen a COOKIE_ECHO chunk in the original direction. |
92 | ESTABLISHED - We have seen a COOKIE_ACK in the reply direction. | |
93 | SHUTDOWN_SENT - We have seen a SHUTDOWN chunk in the original direction. | |
94 | SHUTDOWN_RECD - We have seen a SHUTDOWN chunk in the reply directoin. | |
95 | SHUTDOWN_ACK_SENT - We have seen a SHUTDOWN_ACK chunk in the direction opposite | |
601e68e1 YH |
96 | to that of the SHUTDOWN chunk. |
97 | CLOSED - We have seen a SHUTDOWN_COMPLETE chunk in the direction of | |
98 | the SHUTDOWN chunk. Connection is closed. | |
d7ee3519 MK |
99 | HEARTBEAT_SENT - We have seen a HEARTBEAT in a new flow. |
100 | HEARTBEAT_ACKED - We have seen a HEARTBEAT-ACK in the direction opposite to | |
101 | that of the HEARTBEAT chunk. Secondary connection is | |
102 | established. | |
9fb9cbb1 YK |
103 | */ |
104 | ||
105 | /* TODO | |
601e68e1 | 106 | - I have assumed that the first INIT is in the original direction. |
9fb9cbb1 YK |
107 | This messes things when an INIT comes in the reply direction in CLOSED |
108 | state. | |
601e68e1 | 109 | - Check the error type in the reply dir before transitioning from |
9fb9cbb1 YK |
110 | cookie echoed to closed. |
111 | - Sec 5.2.4 of RFC 2960 | |
d7ee3519 | 112 | - Full Multi Homing support. |
9fb9cbb1 YK |
113 | */ |
114 | ||
115 | /* SCTP conntrack state transitions */ | |
d7ee3519 | 116 | static const u8 sctp_conntracks[2][11][SCTP_CONNTRACK_MAX] = { |
9fb9cbb1 YK |
117 | { |
118 | /* ORIGINAL */ | |
d7ee3519 MK |
119 | /* sNO, sCL, sCW, sCE, sES, sSS, sSR, sSA, sHS, sHA */ |
120 | /* init */ {sCW, sCW, sCW, sCE, sES, sSS, sSR, sSA, sCW, sHA}, | |
121 | /* init_ack */ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sSA, sCL, sHA}, | |
122 | /* abort */ {sCL, sCL, sCL, sCL, sCL, sCL, sCL, sCL, sCL, sCL}, | |
123 | /* shutdown */ {sCL, sCL, sCW, sCE, sSS, sSS, sSR, sSA, sCL, sSS}, | |
124 | /* shutdown_ack */ {sSA, sCL, sCW, sCE, sES, sSA, sSA, sSA, sSA, sHA}, | |
125 | /* error */ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sSA, sCL, sHA},/* Can't have Stale cookie*/ | |
126 | /* cookie_echo */ {sCL, sCL, sCE, sCE, sES, sSS, sSR, sSA, sCL, sHA},/* 5.2.4 - Big TODO */ | |
127 | /* cookie_ack */ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sSA, sCL, sHA},/* Can't come in orig dir */ | |
128 | /* shutdown_comp*/ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sCL, sCL, sHA}, | |
129 | /* heartbeat */ {sHS, sCL, sCW, sCE, sES, sSS, sSR, sSA, sHS, sHA}, | |
130 | /* heartbeat_ack*/ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sSA, sHS, sHA} | |
9fb9cbb1 YK |
131 | }, |
132 | { | |
133 | /* REPLY */ | |
d7ee3519 MK |
134 | /* sNO, sCL, sCW, sCE, sES, sSS, sSR, sSA, sHS, sHA */ |
135 | /* init */ {sIV, sCL, sCW, sCE, sES, sSS, sSR, sSA, sIV, sHA},/* INIT in sCL Big TODO */ | |
136 | /* init_ack */ {sIV, sCL, sCW, sCE, sES, sSS, sSR, sSA, sIV, sHA}, | |
137 | /* abort */ {sIV, sCL, sCL, sCL, sCL, sCL, sCL, sCL, sIV, sCL}, | |
138 | /* shutdown */ {sIV, sCL, sCW, sCE, sSR, sSS, sSR, sSA, sIV, sSR}, | |
139 | /* shutdown_ack */ {sIV, sCL, sCW, sCE, sES, sSA, sSA, sSA, sIV, sHA}, | |
140 | /* error */ {sIV, sCL, sCW, sCL, sES, sSS, sSR, sSA, sIV, sHA}, | |
141 | /* cookie_echo */ {sIV, sCL, sCW, sCE, sES, sSS, sSR, sSA, sIV, sHA},/* Can't come in reply dir */ | |
142 | /* cookie_ack */ {sIV, sCL, sCW, sES, sES, sSS, sSR, sSA, sIV, sHA}, | |
143 | /* shutdown_comp*/ {sIV, sCL, sCW, sCE, sES, sSS, sSR, sCL, sIV, sHA}, | |
144 | /* heartbeat */ {sIV, sCL, sCW, sCE, sES, sSS, sSR, sSA, sHS, sHA}, | |
145 | /* heartbeat_ack*/ {sIV, sCL, sCW, sCE, sES, sSS, sSR, sSA, sHA, sHA} | |
9fb9cbb1 YK |
146 | } |
147 | }; | |
148 | ||
a85406af | 149 | static inline struct nf_sctp_net *sctp_pernet(struct net *net) |
49d485a3 | 150 | { |
a85406af | 151 | return &net->ct.nf_ct_proto.sctp; |
49d485a3 G |
152 | } |
153 | ||
ea48cc83 | 154 | #ifdef CONFIG_NF_CONNTRACK_PROCFS |
9fb9cbb1 | 155 | /* Print out the private part of the conntrack. */ |
37246a58 | 156 | static void sctp_print_conntrack(struct seq_file *s, struct nf_conn *ct) |
9fb9cbb1 | 157 | { |
a163f2cb | 158 | seq_printf(s, "%s ", sctp_conntrack_names[ct->proto.sctp.state]); |
9fb9cbb1 | 159 | } |
ea48cc83 | 160 | #endif |
9fb9cbb1 YK |
161 | |
162 | #define for_each_sctp_chunk(skb, sch, _sch, offset, dataoff, count) \ | |
ae146d9b | 163 | for ((offset) = (dataoff) + sizeof(struct sctphdr), (count) = 0; \ |
e79ec50b JE |
164 | (offset) < (skb)->len && \ |
165 | ((sch) = skb_header_pointer((skb), (offset), sizeof(_sch), &(_sch))); \ | |
166 | (offset) += (ntohs((sch)->length) + 3) & ~3, (count)++) | |
9fb9cbb1 YK |
167 | |
168 | /* Some validity checks to make sure the chunks are fine */ | |
112f35c9 | 169 | static int do_basic_checks(struct nf_conn *ct, |
9fb9cbb1 YK |
170 | const struct sk_buff *skb, |
171 | unsigned int dataoff, | |
35c6d3cb | 172 | unsigned long *map) |
9fb9cbb1 YK |
173 | { |
174 | u_int32_t offset, count; | |
922dbc5b | 175 | struct sctp_chunkhdr _sch, *sch; |
9fb9cbb1 YK |
176 | int flag; |
177 | ||
9fb9cbb1 YK |
178 | flag = 0; |
179 | ||
180 | for_each_sctp_chunk (skb, sch, _sch, offset, dataoff, count) { | |
0d53778e | 181 | pr_debug("Chunk Num: %d Type: %d\n", count, sch->type); |
9fb9cbb1 | 182 | |
5447d477 PM |
183 | if (sch->type == SCTP_CID_INIT || |
184 | sch->type == SCTP_CID_INIT_ACK || | |
185 | sch->type == SCTP_CID_SHUTDOWN_COMPLETE) | |
9fb9cbb1 | 186 | flag = 1; |
9fb9cbb1 | 187 | |
e17df688 PM |
188 | /* |
189 | * Cookie Ack/Echo chunks not the first OR | |
190 | * Init / Init Ack / Shutdown compl chunks not the only chunks | |
191 | * OR zero-length. | |
192 | */ | |
5447d477 PM |
193 | if (((sch->type == SCTP_CID_COOKIE_ACK || |
194 | sch->type == SCTP_CID_COOKIE_ECHO || | |
195 | flag) && | |
196 | count != 0) || !sch->length) { | |
0d53778e | 197 | pr_debug("Basic checks failed\n"); |
9fb9cbb1 YK |
198 | return 1; |
199 | } | |
200 | ||
5447d477 | 201 | if (map) |
35c6d3cb | 202 | set_bit(sch->type, map); |
9fb9cbb1 YK |
203 | } |
204 | ||
0d53778e | 205 | pr_debug("Basic checks passed\n"); |
dd7271fe | 206 | return count == 0; |
9fb9cbb1 YK |
207 | } |
208 | ||
efe9f68a PM |
209 | static int sctp_new_state(enum ip_conntrack_dir dir, |
210 | enum sctp_conntrack cur_state, | |
211 | int chunk_type) | |
9fb9cbb1 YK |
212 | { |
213 | int i; | |
214 | ||
0d53778e | 215 | pr_debug("Chunk type: %d\n", chunk_type); |
9fb9cbb1 YK |
216 | |
217 | switch (chunk_type) { | |
5447d477 PM |
218 | case SCTP_CID_INIT: |
219 | pr_debug("SCTP_CID_INIT\n"); | |
220 | i = 0; | |
221 | break; | |
222 | case SCTP_CID_INIT_ACK: | |
223 | pr_debug("SCTP_CID_INIT_ACK\n"); | |
224 | i = 1; | |
225 | break; | |
226 | case SCTP_CID_ABORT: | |
227 | pr_debug("SCTP_CID_ABORT\n"); | |
228 | i = 2; | |
229 | break; | |
230 | case SCTP_CID_SHUTDOWN: | |
231 | pr_debug("SCTP_CID_SHUTDOWN\n"); | |
232 | i = 3; | |
233 | break; | |
234 | case SCTP_CID_SHUTDOWN_ACK: | |
235 | pr_debug("SCTP_CID_SHUTDOWN_ACK\n"); | |
236 | i = 4; | |
237 | break; | |
238 | case SCTP_CID_ERROR: | |
239 | pr_debug("SCTP_CID_ERROR\n"); | |
240 | i = 5; | |
241 | break; | |
242 | case SCTP_CID_COOKIE_ECHO: | |
243 | pr_debug("SCTP_CID_COOKIE_ECHO\n"); | |
244 | i = 6; | |
245 | break; | |
246 | case SCTP_CID_COOKIE_ACK: | |
247 | pr_debug("SCTP_CID_COOKIE_ACK\n"); | |
248 | i = 7; | |
249 | break; | |
250 | case SCTP_CID_SHUTDOWN_COMPLETE: | |
251 | pr_debug("SCTP_CID_SHUTDOWN_COMPLETE\n"); | |
252 | i = 8; | |
253 | break; | |
d7ee3519 MK |
254 | case SCTP_CID_HEARTBEAT: |
255 | pr_debug("SCTP_CID_HEARTBEAT"); | |
256 | i = 9; | |
257 | break; | |
258 | case SCTP_CID_HEARTBEAT_ACK: | |
259 | pr_debug("SCTP_CID_HEARTBEAT_ACK"); | |
260 | i = 10; | |
261 | break; | |
5447d477 | 262 | default: |
d7ee3519 | 263 | /* Other chunks like DATA or SACK do not change the state */ |
5447d477 PM |
264 | pr_debug("Unknown chunk type, Will stay in %s\n", |
265 | sctp_conntrack_names[cur_state]); | |
266 | return cur_state; | |
9fb9cbb1 YK |
267 | } |
268 | ||
0d53778e PM |
269 | pr_debug("dir: %d cur_state: %s chunk_type: %d new_state: %s\n", |
270 | dir, sctp_conntrack_names[cur_state], chunk_type, | |
271 | sctp_conntrack_names[sctp_conntracks[dir][i][cur_state]]); | |
9fb9cbb1 YK |
272 | |
273 | return sctp_conntracks[dir][i][cur_state]; | |
274 | } | |
275 | ||
b37e933a | 276 | /* Returns verdict for packet, or -NF_ACCEPT for invalid. */ |
112f35c9 | 277 | static int sctp_packet(struct nf_conn *ct, |
9fb9cbb1 YK |
278 | const struct sk_buff *skb, |
279 | unsigned int dataoff, | |
c779e849 | 280 | enum ip_conntrack_info ctinfo) |
9fb9cbb1 | 281 | { |
efe9f68a | 282 | enum sctp_conntrack new_state, old_state; |
8528819a | 283 | enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo); |
12c33aa2 JE |
284 | const struct sctphdr *sh; |
285 | struct sctphdr _sctph; | |
286 | const struct sctp_chunkhdr *sch; | |
287 | struct sctp_chunkhdr _sch; | |
9fb9cbb1 | 288 | u_int32_t offset, count; |
c779e849 | 289 | unsigned int *timeouts; |
35c6d3cb | 290 | unsigned long map[256 / sizeof(unsigned long)] = { 0 }; |
9fb9cbb1 | 291 | |
9fb9cbb1 YK |
292 | sh = skb_header_pointer(skb, dataoff, sizeof(_sctph), &_sctph); |
293 | if (sh == NULL) | |
b37e933a | 294 | goto out; |
9fb9cbb1 | 295 | |
112f35c9 | 296 | if (do_basic_checks(ct, skb, dataoff, map) != 0) |
b37e933a | 297 | goto out; |
9fb9cbb1 YK |
298 | |
299 | /* Check the verification tag (Sec 8.5) */ | |
35c6d3cb PM |
300 | if (!test_bit(SCTP_CID_INIT, map) && |
301 | !test_bit(SCTP_CID_SHUTDOWN_COMPLETE, map) && | |
302 | !test_bit(SCTP_CID_COOKIE_ECHO, map) && | |
303 | !test_bit(SCTP_CID_ABORT, map) && | |
304 | !test_bit(SCTP_CID_SHUTDOWN_ACK, map) && | |
d7ee3519 MK |
305 | !test_bit(SCTP_CID_HEARTBEAT, map) && |
306 | !test_bit(SCTP_CID_HEARTBEAT_ACK, map) && | |
8528819a | 307 | sh->vtag != ct->proto.sctp.vtag[dir]) { |
0d53778e | 308 | pr_debug("Verification tag check failed\n"); |
b37e933a | 309 | goto out; |
9fb9cbb1 YK |
310 | } |
311 | ||
328bd899 | 312 | old_state = new_state = SCTP_CONNTRACK_NONE; |
440f0d58 | 313 | spin_lock_bh(&ct->lock); |
9fb9cbb1 | 314 | for_each_sctp_chunk (skb, sch, _sch, offset, dataoff, count) { |
9fb9cbb1 YK |
315 | /* Special cases of Verification tag check (Sec 8.5.1) */ |
316 | if (sch->type == SCTP_CID_INIT) { | |
317 | /* Sec 8.5.1 (A) */ | |
b37e933a PM |
318 | if (sh->vtag != 0) |
319 | goto out_unlock; | |
9fb9cbb1 YK |
320 | } else if (sch->type == SCTP_CID_ABORT) { |
321 | /* Sec 8.5.1 (B) */ | |
8528819a | 322 | if (sh->vtag != ct->proto.sctp.vtag[dir] && |
b37e933a PM |
323 | sh->vtag != ct->proto.sctp.vtag[!dir]) |
324 | goto out_unlock; | |
9fb9cbb1 YK |
325 | } else if (sch->type == SCTP_CID_SHUTDOWN_COMPLETE) { |
326 | /* Sec 8.5.1 (C) */ | |
8528819a PM |
327 | if (sh->vtag != ct->proto.sctp.vtag[dir] && |
328 | sh->vtag != ct->proto.sctp.vtag[!dir] && | |
9b1c2cfd | 329 | sch->flags & SCTP_CHUNK_FLAG_T) |
b37e933a | 330 | goto out_unlock; |
9fb9cbb1 YK |
331 | } else if (sch->type == SCTP_CID_COOKIE_ECHO) { |
332 | /* Sec 8.5.1 (D) */ | |
b37e933a PM |
333 | if (sh->vtag != ct->proto.sctp.vtag[dir]) |
334 | goto out_unlock; | |
d7ee3519 MK |
335 | } else if (sch->type == SCTP_CID_HEARTBEAT || |
336 | sch->type == SCTP_CID_HEARTBEAT_ACK) { | |
337 | if (ct->proto.sctp.vtag[dir] == 0) { | |
338 | pr_debug("Setting vtag %x for dir %d\n", | |
339 | sh->vtag, dir); | |
340 | ct->proto.sctp.vtag[dir] = sh->vtag; | |
341 | } else if (sh->vtag != ct->proto.sctp.vtag[dir]) { | |
342 | pr_debug("Verification tag check failed\n"); | |
343 | goto out_unlock; | |
344 | } | |
9fb9cbb1 YK |
345 | } |
346 | ||
efe9f68a PM |
347 | old_state = ct->proto.sctp.state; |
348 | new_state = sctp_new_state(dir, old_state, sch->type); | |
9fb9cbb1 YK |
349 | |
350 | /* Invalid */ | |
efe9f68a | 351 | if (new_state == SCTP_CONNTRACK_MAX) { |
0d53778e PM |
352 | pr_debug("nf_conntrack_sctp: Invalid dir=%i ctype=%u " |
353 | "conntrack=%u\n", | |
efe9f68a | 354 | dir, sch->type, old_state); |
b37e933a | 355 | goto out_unlock; |
9fb9cbb1 YK |
356 | } |
357 | ||
358 | /* If it is an INIT or an INIT ACK note down the vtag */ | |
5447d477 PM |
359 | if (sch->type == SCTP_CID_INIT || |
360 | sch->type == SCTP_CID_INIT_ACK) { | |
4ae70c08 | 361 | struct sctp_inithdr _inithdr, *ih; |
9fb9cbb1 | 362 | |
922dbc5b | 363 | ih = skb_header_pointer(skb, offset + sizeof(_sch), |
601e68e1 | 364 | sizeof(_inithdr), &_inithdr); |
b37e933a PM |
365 | if (ih == NULL) |
366 | goto out_unlock; | |
0d53778e | 367 | pr_debug("Setting vtag %x for dir %d\n", |
8528819a PM |
368 | ih->init_tag, !dir); |
369 | ct->proto.sctp.vtag[!dir] = ih->init_tag; | |
9fb9cbb1 YK |
370 | } |
371 | ||
efe9f68a PM |
372 | ct->proto.sctp.state = new_state; |
373 | if (old_state != new_state) | |
a71996fc | 374 | nf_conntrack_event_cache(IPCT_PROTOINFO, ct); |
9fb9cbb1 | 375 | } |
440f0d58 | 376 | spin_unlock_bh(&ct->lock); |
9fb9cbb1 | 377 | |
c779e849 FW |
378 | timeouts = nf_ct_timeout_lookup(ct); |
379 | if (!timeouts) | |
380 | timeouts = sctp_pernet(nf_ct_net(ct))->timeouts; | |
381 | ||
2c8503f5 | 382 | nf_ct_refresh_acct(ct, ctinfo, skb, timeouts[new_state]); |
9fb9cbb1 | 383 | |
efe9f68a | 384 | if (old_state == SCTP_CONNTRACK_COOKIE_ECHOED && |
8528819a | 385 | dir == IP_CT_DIR_REPLY && |
efe9f68a | 386 | new_state == SCTP_CONNTRACK_ESTABLISHED) { |
0d53778e | 387 | pr_debug("Setting assured bit\n"); |
112f35c9 | 388 | set_bit(IPS_ASSURED_BIT, &ct->status); |
858b3133 | 389 | nf_conntrack_event_cache(IPCT_ASSURED, ct); |
9fb9cbb1 YK |
390 | } |
391 | ||
392 | return NF_ACCEPT; | |
b37e933a PM |
393 | |
394 | out_unlock: | |
440f0d58 | 395 | spin_unlock_bh(&ct->lock); |
b37e933a PM |
396 | out: |
397 | return -NF_ACCEPT; | |
9fb9cbb1 YK |
398 | } |
399 | ||
400 | /* Called when a new connection for this protocol found. */ | |
09f263cd | 401 | static bool sctp_new(struct nf_conn *ct, const struct sk_buff *skb, |
c779e849 | 402 | unsigned int dataoff) |
9fb9cbb1 | 403 | { |
efe9f68a | 404 | enum sctp_conntrack new_state; |
12c33aa2 JE |
405 | const struct sctphdr *sh; |
406 | struct sctphdr _sctph; | |
407 | const struct sctp_chunkhdr *sch; | |
408 | struct sctp_chunkhdr _sch; | |
9fb9cbb1 | 409 | u_int32_t offset, count; |
35c6d3cb | 410 | unsigned long map[256 / sizeof(unsigned long)] = { 0 }; |
9fb9cbb1 | 411 | |
9fb9cbb1 YK |
412 | sh = skb_header_pointer(skb, dataoff, sizeof(_sctph), &_sctph); |
413 | if (sh == NULL) | |
09f263cd | 414 | return false; |
9fb9cbb1 | 415 | |
112f35c9 | 416 | if (do_basic_checks(ct, skb, dataoff, map) != 0) |
09f263cd | 417 | return false; |
9fb9cbb1 YK |
418 | |
419 | /* If an OOTB packet has any of these chunks discard (Sec 8.4) */ | |
35c6d3cb PM |
420 | if (test_bit(SCTP_CID_ABORT, map) || |
421 | test_bit(SCTP_CID_SHUTDOWN_COMPLETE, map) || | |
422 | test_bit(SCTP_CID_COOKIE_ACK, map)) | |
09f263cd | 423 | return false; |
9fb9cbb1 | 424 | |
e5fc9e7a | 425 | memset(&ct->proto.sctp, 0, sizeof(ct->proto.sctp)); |
efe9f68a | 426 | new_state = SCTP_CONNTRACK_MAX; |
9fb9cbb1 YK |
427 | for_each_sctp_chunk (skb, sch, _sch, offset, dataoff, count) { |
428 | /* Don't need lock here: this conntrack not in circulation yet */ | |
efe9f68a PM |
429 | new_state = sctp_new_state(IP_CT_DIR_ORIGINAL, |
430 | SCTP_CONNTRACK_NONE, sch->type); | |
9fb9cbb1 YK |
431 | |
432 | /* Invalid: delete conntrack */ | |
efe9f68a PM |
433 | if (new_state == SCTP_CONNTRACK_NONE || |
434 | new_state == SCTP_CONNTRACK_MAX) { | |
0d53778e | 435 | pr_debug("nf_conntrack_sctp: invalid new deleting.\n"); |
09f263cd | 436 | return false; |
9fb9cbb1 YK |
437 | } |
438 | ||
439 | /* Copy the vtag into the state info */ | |
440 | if (sch->type == SCTP_CID_INIT) { | |
4ae70c08 | 441 | struct sctp_inithdr _inithdr, *ih; |
922dbc5b XL |
442 | /* Sec 8.5.1 (A) */ |
443 | if (sh->vtag) | |
444 | return false; | |
9fb9cbb1 | 445 | |
922dbc5b XL |
446 | ih = skb_header_pointer(skb, offset + sizeof(_sch), |
447 | sizeof(_inithdr), &_inithdr); | |
448 | if (!ih) | |
449 | return false; | |
9fb9cbb1 | 450 | |
922dbc5b XL |
451 | pr_debug("Setting vtag %x for new conn\n", |
452 | ih->init_tag); | |
9fb9cbb1 | 453 | |
922dbc5b | 454 | ct->proto.sctp.vtag[IP_CT_DIR_REPLY] = ih->init_tag; |
d7ee3519 MK |
455 | } else if (sch->type == SCTP_CID_HEARTBEAT) { |
456 | pr_debug("Setting vtag %x for secondary conntrack\n", | |
457 | sh->vtag); | |
458 | ct->proto.sctp.vtag[IP_CT_DIR_ORIGINAL] = sh->vtag; | |
9fb9cbb1 YK |
459 | } |
460 | /* If it is a shutdown ack OOTB packet, we expect a return | |
461 | shutdown complete, otherwise an ABORT Sec 8.4 (5) and (8) */ | |
462 | else { | |
0d53778e PM |
463 | pr_debug("Setting vtag %x for new conn OOTB\n", |
464 | sh->vtag); | |
112f35c9 | 465 | ct->proto.sctp.vtag[IP_CT_DIR_REPLY] = sh->vtag; |
9fb9cbb1 YK |
466 | } |
467 | ||
efe9f68a | 468 | ct->proto.sctp.state = new_state; |
9fb9cbb1 YK |
469 | } |
470 | ||
09f263cd | 471 | return true; |
9fb9cbb1 YK |
472 | } |
473 | ||
cf6e007e | 474 | static int sctp_error(struct net *net, struct nf_conn *tpl, struct sk_buff *skb, |
11df4b76 | 475 | unsigned int dataoff, |
cf6e007e DC |
476 | u8 pf, unsigned int hooknum) |
477 | { | |
478 | const struct sctphdr *sh; | |
cf6e007e DC |
479 | const char *logmsg; |
480 | ||
f3c0eb05 | 481 | if (skb->len < dataoff + sizeof(struct sctphdr)) { |
cf6e007e DC |
482 | logmsg = "nf_ct_sctp: short packet "; |
483 | goto out_invalid; | |
484 | } | |
485 | if (net->ct.sysctl_checksum && hooknum == NF_INET_PRE_ROUTING && | |
486 | skb->ip_summed == CHECKSUM_NONE) { | |
f3c0eb05 DC |
487 | if (!skb_make_writable(skb, dataoff + sizeof(struct sctphdr))) { |
488 | logmsg = "nf_ct_sctp: failed to read header "; | |
489 | goto out_invalid; | |
490 | } | |
491 | sh = (const struct sctphdr *)(skb->data + dataoff); | |
cf6e007e DC |
492 | if (sh->checksum != sctp_compute_cksum(skb, dataoff)) { |
493 | logmsg = "nf_ct_sctp: bad CRC "; | |
494 | goto out_invalid; | |
495 | } | |
496 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
497 | } | |
498 | return NF_ACCEPT; | |
499 | out_invalid: | |
c4f3db15 | 500 | nf_l4proto_log_invalid(skb, net, pf, IPPROTO_SCTP, "%s", logmsg); |
cf6e007e DC |
501 | return -NF_ACCEPT; |
502 | } | |
503 | ||
c6dd940b FW |
504 | static bool sctp_can_early_drop(const struct nf_conn *ct) |
505 | { | |
506 | switch (ct->proto.sctp.state) { | |
507 | case SCTP_CONNTRACK_SHUTDOWN_SENT: | |
508 | case SCTP_CONNTRACK_SHUTDOWN_RECD: | |
509 | case SCTP_CONNTRACK_SHUTDOWN_ACK_SENT: | |
510 | return true; | |
511 | default: | |
512 | break; | |
513 | } | |
514 | ||
515 | return false; | |
516 | } | |
517 | ||
c0cd1156 | 518 | #if IS_ENABLED(CONFIG_NF_CT_NETLINK) |
a258860e PNA |
519 | |
520 | #include <linux/netfilter/nfnetlink.h> | |
521 | #include <linux/netfilter/nfnetlink_conntrack.h> | |
522 | ||
523 | static int sctp_to_nlattr(struct sk_buff *skb, struct nlattr *nla, | |
440f0d58 | 524 | struct nf_conn *ct) |
a258860e PNA |
525 | { |
526 | struct nlattr *nest_parms; | |
527 | ||
440f0d58 | 528 | spin_lock_bh(&ct->lock); |
a258860e PNA |
529 | nest_parms = nla_nest_start(skb, CTA_PROTOINFO_SCTP | NLA_F_NESTED); |
530 | if (!nest_parms) | |
531 | goto nla_put_failure; | |
532 | ||
5e8d1eb5 DM |
533 | if (nla_put_u8(skb, CTA_PROTOINFO_SCTP_STATE, ct->proto.sctp.state) || |
534 | nla_put_be32(skb, CTA_PROTOINFO_SCTP_VTAG_ORIGINAL, | |
535 | ct->proto.sctp.vtag[IP_CT_DIR_ORIGINAL]) || | |
536 | nla_put_be32(skb, CTA_PROTOINFO_SCTP_VTAG_REPLY, | |
537 | ct->proto.sctp.vtag[IP_CT_DIR_REPLY])) | |
538 | goto nla_put_failure; | |
a258860e | 539 | |
440f0d58 | 540 | spin_unlock_bh(&ct->lock); |
a258860e PNA |
541 | |
542 | nla_nest_end(skb, nest_parms); | |
543 | ||
544 | return 0; | |
545 | ||
546 | nla_put_failure: | |
440f0d58 | 547 | spin_unlock_bh(&ct->lock); |
a258860e PNA |
548 | return -1; |
549 | } | |
550 | ||
551 | static const struct nla_policy sctp_nla_policy[CTA_PROTOINFO_SCTP_MAX+1] = { | |
552 | [CTA_PROTOINFO_SCTP_STATE] = { .type = NLA_U8 }, | |
553 | [CTA_PROTOINFO_SCTP_VTAG_ORIGINAL] = { .type = NLA_U32 }, | |
554 | [CTA_PROTOINFO_SCTP_VTAG_REPLY] = { .type = NLA_U32 }, | |
555 | }; | |
556 | ||
39215846 FW |
557 | #define SCTP_NLATTR_SIZE ( \ |
558 | NLA_ALIGN(NLA_HDRLEN + 1) + \ | |
559 | NLA_ALIGN(NLA_HDRLEN + 4) + \ | |
560 | NLA_ALIGN(NLA_HDRLEN + 4)) | |
561 | ||
a258860e PNA |
562 | static int nlattr_to_sctp(struct nlattr *cda[], struct nf_conn *ct) |
563 | { | |
564 | struct nlattr *attr = cda[CTA_PROTOINFO_SCTP]; | |
565 | struct nlattr *tb[CTA_PROTOINFO_SCTP_MAX+1]; | |
566 | int err; | |
567 | ||
568 | /* updates may not contain the internal protocol info, skip parsing */ | |
569 | if (!attr) | |
570 | return 0; | |
571 | ||
fceb6435 JB |
572 | err = nla_parse_nested(tb, CTA_PROTOINFO_SCTP_MAX, attr, |
573 | sctp_nla_policy, NULL); | |
a258860e PNA |
574 | if (err < 0) |
575 | return err; | |
576 | ||
577 | if (!tb[CTA_PROTOINFO_SCTP_STATE] || | |
578 | !tb[CTA_PROTOINFO_SCTP_VTAG_ORIGINAL] || | |
579 | !tb[CTA_PROTOINFO_SCTP_VTAG_REPLY]) | |
580 | return -EINVAL; | |
581 | ||
440f0d58 | 582 | spin_lock_bh(&ct->lock); |
a258860e PNA |
583 | ct->proto.sctp.state = nla_get_u8(tb[CTA_PROTOINFO_SCTP_STATE]); |
584 | ct->proto.sctp.vtag[IP_CT_DIR_ORIGINAL] = | |
5547cd0a | 585 | nla_get_be32(tb[CTA_PROTOINFO_SCTP_VTAG_ORIGINAL]); |
a258860e | 586 | ct->proto.sctp.vtag[IP_CT_DIR_REPLY] = |
5547cd0a | 587 | nla_get_be32(tb[CTA_PROTOINFO_SCTP_VTAG_REPLY]); |
440f0d58 | 588 | spin_unlock_bh(&ct->lock); |
a258860e PNA |
589 | |
590 | return 0; | |
591 | } | |
592 | #endif | |
593 | ||
a874752a | 594 | #ifdef CONFIG_NF_CONNTRACK_TIMEOUT |
50978462 PNA |
595 | |
596 | #include <linux/netfilter/nfnetlink.h> | |
597 | #include <linux/netfilter/nfnetlink_cttimeout.h> | |
598 | ||
8264deb8 G |
599 | static int sctp_timeout_nlattr_to_obj(struct nlattr *tb[], |
600 | struct net *net, void *data) | |
50978462 PNA |
601 | { |
602 | unsigned int *timeouts = data; | |
a85406af | 603 | struct nf_sctp_net *sn = sctp_pernet(net); |
50978462 PNA |
604 | int i; |
605 | ||
606 | /* set default SCTP timeouts. */ | |
607 | for (i=0; i<SCTP_CONNTRACK_MAX; i++) | |
8264deb8 | 608 | timeouts[i] = sn->timeouts[i]; |
50978462 PNA |
609 | |
610 | /* there's a 1:1 mapping between attributes and protocol states. */ | |
611 | for (i=CTA_TIMEOUT_SCTP_UNSPEC+1; i<CTA_TIMEOUT_SCTP_MAX+1; i++) { | |
612 | if (tb[i]) { | |
613 | timeouts[i] = ntohl(nla_get_be32(tb[i])) * HZ; | |
614 | } | |
615 | } | |
ef39078d FW |
616 | |
617 | timeouts[CTA_TIMEOUT_SCTP_UNSPEC] = timeouts[CTA_TIMEOUT_SCTP_CLOSED]; | |
50978462 PNA |
618 | return 0; |
619 | } | |
620 | ||
621 | static int | |
622 | sctp_timeout_obj_to_nlattr(struct sk_buff *skb, const void *data) | |
623 | { | |
624 | const unsigned int *timeouts = data; | |
625 | int i; | |
626 | ||
5e8d1eb5 DM |
627 | for (i=CTA_TIMEOUT_SCTP_UNSPEC+1; i<CTA_TIMEOUT_SCTP_MAX+1; i++) { |
628 | if (nla_put_be32(skb, i, htonl(timeouts[i] / HZ))) | |
629 | goto nla_put_failure; | |
630 | } | |
50978462 PNA |
631 | return 0; |
632 | ||
633 | nla_put_failure: | |
634 | return -ENOSPC; | |
635 | } | |
636 | ||
637 | static const struct nla_policy | |
638 | sctp_timeout_nla_policy[CTA_TIMEOUT_SCTP_MAX+1] = { | |
639 | [CTA_TIMEOUT_SCTP_CLOSED] = { .type = NLA_U32 }, | |
640 | [CTA_TIMEOUT_SCTP_COOKIE_WAIT] = { .type = NLA_U32 }, | |
641 | [CTA_TIMEOUT_SCTP_COOKIE_ECHOED] = { .type = NLA_U32 }, | |
642 | [CTA_TIMEOUT_SCTP_ESTABLISHED] = { .type = NLA_U32 }, | |
643 | [CTA_TIMEOUT_SCTP_SHUTDOWN_SENT] = { .type = NLA_U32 }, | |
644 | [CTA_TIMEOUT_SCTP_SHUTDOWN_RECD] = { .type = NLA_U32 }, | |
645 | [CTA_TIMEOUT_SCTP_SHUTDOWN_ACK_SENT] = { .type = NLA_U32 }, | |
d7ee3519 MK |
646 | [CTA_TIMEOUT_SCTP_HEARTBEAT_SENT] = { .type = NLA_U32 }, |
647 | [CTA_TIMEOUT_SCTP_HEARTBEAT_ACKED] = { .type = NLA_U32 }, | |
50978462 | 648 | }; |
a874752a | 649 | #endif /* CONFIG_NF_CONNTRACK_TIMEOUT */ |
50978462 PNA |
650 | |
651 | ||
9fb9cbb1 | 652 | #ifdef CONFIG_SYSCTL |
933a41e7 | 653 | static struct ctl_table sctp_sysctl_table[] = { |
9fb9cbb1 | 654 | { |
9fb9cbb1 | 655 | .procname = "nf_conntrack_sctp_timeout_closed", |
9fb9cbb1 YK |
656 | .maxlen = sizeof(unsigned int), |
657 | .mode = 0644, | |
6d9f239a | 658 | .proc_handler = proc_dointvec_jiffies, |
9fb9cbb1 YK |
659 | }, |
660 | { | |
9fb9cbb1 | 661 | .procname = "nf_conntrack_sctp_timeout_cookie_wait", |
9fb9cbb1 YK |
662 | .maxlen = sizeof(unsigned int), |
663 | .mode = 0644, | |
6d9f239a | 664 | .proc_handler = proc_dointvec_jiffies, |
9fb9cbb1 YK |
665 | }, |
666 | { | |
9fb9cbb1 | 667 | .procname = "nf_conntrack_sctp_timeout_cookie_echoed", |
9fb9cbb1 YK |
668 | .maxlen = sizeof(unsigned int), |
669 | .mode = 0644, | |
6d9f239a | 670 | .proc_handler = proc_dointvec_jiffies, |
9fb9cbb1 YK |
671 | }, |
672 | { | |
9fb9cbb1 | 673 | .procname = "nf_conntrack_sctp_timeout_established", |
9fb9cbb1 YK |
674 | .maxlen = sizeof(unsigned int), |
675 | .mode = 0644, | |
6d9f239a | 676 | .proc_handler = proc_dointvec_jiffies, |
9fb9cbb1 YK |
677 | }, |
678 | { | |
9fb9cbb1 | 679 | .procname = "nf_conntrack_sctp_timeout_shutdown_sent", |
9fb9cbb1 YK |
680 | .maxlen = sizeof(unsigned int), |
681 | .mode = 0644, | |
6d9f239a | 682 | .proc_handler = proc_dointvec_jiffies, |
9fb9cbb1 YK |
683 | }, |
684 | { | |
9fb9cbb1 | 685 | .procname = "nf_conntrack_sctp_timeout_shutdown_recd", |
9fb9cbb1 YK |
686 | .maxlen = sizeof(unsigned int), |
687 | .mode = 0644, | |
6d9f239a | 688 | .proc_handler = proc_dointvec_jiffies, |
9fb9cbb1 YK |
689 | }, |
690 | { | |
9fb9cbb1 | 691 | .procname = "nf_conntrack_sctp_timeout_shutdown_ack_sent", |
9fb9cbb1 YK |
692 | .maxlen = sizeof(unsigned int), |
693 | .mode = 0644, | |
6d9f239a | 694 | .proc_handler = proc_dointvec_jiffies, |
9fb9cbb1 | 695 | }, |
d7ee3519 MK |
696 | { |
697 | .procname = "nf_conntrack_sctp_timeout_heartbeat_sent", | |
698 | .maxlen = sizeof(unsigned int), | |
699 | .mode = 0644, | |
700 | .proc_handler = proc_dointvec_jiffies, | |
701 | }, | |
702 | { | |
703 | .procname = "nf_conntrack_sctp_timeout_heartbeat_acked", | |
704 | .maxlen = sizeof(unsigned int), | |
705 | .mode = 0644, | |
706 | .proc_handler = proc_dointvec_jiffies, | |
707 | }, | |
f8572d8f | 708 | { } |
9fb9cbb1 | 709 | }; |
933a41e7 | 710 | #endif |
9fb9cbb1 | 711 | |
f42c4183 | 712 | static int sctp_kmemdup_sysctl_table(struct nf_proto_net *pn, |
a85406af | 713 | struct nf_sctp_net *sn) |
49d485a3 G |
714 | { |
715 | #ifdef CONFIG_SYSCTL | |
49d485a3 G |
716 | if (pn->ctl_table) |
717 | return 0; | |
718 | ||
719 | pn->ctl_table = kmemdup(sctp_sysctl_table, | |
720 | sizeof(sctp_sysctl_table), | |
721 | GFP_KERNEL); | |
722 | if (!pn->ctl_table) | |
723 | return -ENOMEM; | |
724 | ||
725 | pn->ctl_table[0].data = &sn->timeouts[SCTP_CONNTRACK_CLOSED]; | |
726 | pn->ctl_table[1].data = &sn->timeouts[SCTP_CONNTRACK_COOKIE_WAIT]; | |
727 | pn->ctl_table[2].data = &sn->timeouts[SCTP_CONNTRACK_COOKIE_ECHOED]; | |
728 | pn->ctl_table[3].data = &sn->timeouts[SCTP_CONNTRACK_ESTABLISHED]; | |
729 | pn->ctl_table[4].data = &sn->timeouts[SCTP_CONNTRACK_SHUTDOWN_SENT]; | |
730 | pn->ctl_table[5].data = &sn->timeouts[SCTP_CONNTRACK_SHUTDOWN_RECD]; | |
731 | pn->ctl_table[6].data = &sn->timeouts[SCTP_CONNTRACK_SHUTDOWN_ACK_SENT]; | |
d7ee3519 MK |
732 | pn->ctl_table[7].data = &sn->timeouts[SCTP_CONNTRACK_HEARTBEAT_SENT]; |
733 | pn->ctl_table[8].data = &sn->timeouts[SCTP_CONNTRACK_HEARTBEAT_ACKED]; | |
49d485a3 G |
734 | #endif |
735 | return 0; | |
736 | } | |
737 | ||
f42c4183 | 738 | static int sctp_init_net(struct net *net, u_int16_t proto) |
49d485a3 | 739 | { |
a85406af | 740 | struct nf_sctp_net *sn = sctp_pernet(net); |
f42c4183 | 741 | struct nf_proto_net *pn = &sn->pn; |
49d485a3 | 742 | |
f42c4183 G |
743 | if (!pn->users) { |
744 | int i; | |
49d485a3 | 745 | |
f42c4183 G |
746 | for (i = 0; i < SCTP_CONNTRACK_MAX; i++) |
747 | sn->timeouts[i] = sctp_timeouts[i]; | |
ef39078d FW |
748 | |
749 | /* timeouts[0] is unused, init it so ->timeouts[0] contains | |
750 | * 'new' timeout, like udp or icmp. | |
751 | */ | |
752 | sn->timeouts[0] = sctp_timeouts[SCTP_CONNTRACK_CLOSED]; | |
f42c4183 | 753 | } |
49d485a3 | 754 | |
adf05168 | 755 | return sctp_kmemdup_sysctl_table(pn, sn); |
49d485a3 G |
756 | } |
757 | ||
deaa0a97 LZ |
758 | static struct nf_proto_net *sctp_get_net_proto(struct net *net) |
759 | { | |
760 | return &net->ct.nf_ct_proto.sctp.pn; | |
761 | } | |
762 | ||
9dae47ab | 763 | const struct nf_conntrack_l4proto nf_conntrack_l4proto_sctp4 = { |
933a41e7 PM |
764 | .l3proto = PF_INET, |
765 | .l4proto = IPPROTO_SCTP, | |
ea48cc83 | 766 | #ifdef CONFIG_NF_CONNTRACK_PROCFS |
933a41e7 | 767 | .print_conntrack = sctp_print_conntrack, |
ea48cc83 | 768 | #endif |
933a41e7 PM |
769 | .packet = sctp_packet, |
770 | .new = sctp_new, | |
cf6e007e | 771 | .error = sctp_error, |
c6dd940b | 772 | .can_early_drop = sctp_can_early_drop, |
933a41e7 | 773 | .me = THIS_MODULE, |
c0cd1156 | 774 | #if IS_ENABLED(CONFIG_NF_CT_NETLINK) |
39215846 | 775 | .nlattr_size = SCTP_NLATTR_SIZE, |
a258860e PNA |
776 | .to_nlattr = sctp_to_nlattr, |
777 | .from_nlattr = nlattr_to_sctp, | |
c7212e9d | 778 | .tuple_to_nlattr = nf_ct_port_tuple_to_nlattr, |
a400c30e | 779 | .nlattr_tuple_size = nf_ct_port_nlattr_tuple_size, |
c7212e9d PNA |
780 | .nlattr_to_tuple = nf_ct_port_nlattr_to_tuple, |
781 | .nla_policy = nf_ct_port_nla_policy, | |
782 | #endif | |
a874752a | 783 | #ifdef CONFIG_NF_CONNTRACK_TIMEOUT |
50978462 PNA |
784 | .ctnl_timeout = { |
785 | .nlattr_to_obj = sctp_timeout_nlattr_to_obj, | |
786 | .obj_to_nlattr = sctp_timeout_obj_to_nlattr, | |
787 | .nlattr_max = CTA_TIMEOUT_SCTP_MAX, | |
788 | .obj_size = sizeof(unsigned int) * SCTP_CONNTRACK_MAX, | |
789 | .nla_policy = sctp_timeout_nla_policy, | |
790 | }, | |
a874752a | 791 | #endif /* CONFIG_NF_CONNTRACK_TIMEOUT */ |
f42c4183 | 792 | .init_net = sctp_init_net, |
deaa0a97 | 793 | .get_net_proto = sctp_get_net_proto, |
9fb9cbb1 | 794 | }; |
a85406af | 795 | EXPORT_SYMBOL_GPL(nf_conntrack_l4proto_sctp4); |
9fb9cbb1 | 796 | |
9dae47ab | 797 | const struct nf_conntrack_l4proto nf_conntrack_l4proto_sctp6 = { |
933a41e7 PM |
798 | .l3proto = PF_INET6, |
799 | .l4proto = IPPROTO_SCTP, | |
ea48cc83 | 800 | #ifdef CONFIG_NF_CONNTRACK_PROCFS |
933a41e7 | 801 | .print_conntrack = sctp_print_conntrack, |
ea48cc83 | 802 | #endif |
933a41e7 PM |
803 | .packet = sctp_packet, |
804 | .new = sctp_new, | |
cf6e007e | 805 | .error = sctp_error, |
c6dd940b | 806 | .can_early_drop = sctp_can_early_drop, |
933a41e7 | 807 | .me = THIS_MODULE, |
c0cd1156 | 808 | #if IS_ENABLED(CONFIG_NF_CT_NETLINK) |
39215846 | 809 | .nlattr_size = SCTP_NLATTR_SIZE, |
a258860e PNA |
810 | .to_nlattr = sctp_to_nlattr, |
811 | .from_nlattr = nlattr_to_sctp, | |
c7212e9d | 812 | .tuple_to_nlattr = nf_ct_port_tuple_to_nlattr, |
a400c30e | 813 | .nlattr_tuple_size = nf_ct_port_nlattr_tuple_size, |
c7212e9d PNA |
814 | .nlattr_to_tuple = nf_ct_port_nlattr_to_tuple, |
815 | .nla_policy = nf_ct_port_nla_policy, | |
a874752a PNA |
816 | #endif |
817 | #ifdef CONFIG_NF_CONNTRACK_TIMEOUT | |
50978462 PNA |
818 | .ctnl_timeout = { |
819 | .nlattr_to_obj = sctp_timeout_nlattr_to_obj, | |
820 | .obj_to_nlattr = sctp_timeout_obj_to_nlattr, | |
821 | .nlattr_max = CTA_TIMEOUT_SCTP_MAX, | |
822 | .obj_size = sizeof(unsigned int) * SCTP_CONNTRACK_MAX, | |
823 | .nla_policy = sctp_timeout_nla_policy, | |
824 | }, | |
a874752a | 825 | #endif /* CONFIG_NF_CONNTRACK_TIMEOUT */ |
f42c4183 | 826 | .init_net = sctp_init_net, |
deaa0a97 | 827 | .get_net_proto = sctp_get_net_proto, |
933a41e7 | 828 | }; |
a85406af | 829 | EXPORT_SYMBOL_GPL(nf_conntrack_l4proto_sctp6); |