1 #include <linux/kernel.h>
3 #include <linux/sctp.h>
5 #include <net/ip6_checksum.h>
6 #include <linux/netfilter.h>
7 #include <linux/netfilter_ipv4.h>
8 #include <net/sctp/checksum.h>
12 sctp_conn_schedule(int af, struct sk_buff *skb, struct ip_vs_proto_data *pd,
13 int *verdict, struct ip_vs_conn **cpp,
14 struct ip_vs_iphdr *iph)
17 struct ip_vs_service *svc;
18 struct netns_ipvs *ipvs;
19 sctp_chunkhdr_t _schunkh, *sch;
20 sctp_sctphdr_t *sh, _sctph;
22 sh = skb_header_pointer(skb, iph->len, sizeof(_sctph), &_sctph);
28 sch = skb_header_pointer(skb, iph->len + sizeof(sctp_sctphdr_t),
29 sizeof(_schunkh), &_schunkh);
38 if ((sch->type == SCTP_CID_INIT || sysctl_sloppy_sctp(ipvs)) &&
39 (svc = ip_vs_service_find(net, af, skb->mark, iph->protocol,
40 &iph->daddr, sh->dest))) {
43 if (ip_vs_todrop(ipvs)) {
45 * It seems that we are very loaded.
46 * We have to drop this packet :(
53 * Let the virtual server select a real server for the
54 * incoming connection, and create a connection entry.
56 *cpp = ip_vs_schedule(svc, skb, pd, &ignored, iph);
57 if (!*cpp && ignored <= 0) {
59 *verdict = ip_vs_leave(svc, skb, pd, iph);
71 static void sctp_nat_csum(struct sk_buff *skb, sctp_sctphdr_t *sctph,
72 unsigned int sctphoff)
74 sctph->checksum = sctp_compute_cksum(skb, sctphoff);
75 skb->ip_summed = CHECKSUM_UNNECESSARY;
79 sctp_snat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp,
80 struct ip_vs_conn *cp, struct ip_vs_iphdr *iph)
82 sctp_sctphdr_t *sctph;
83 unsigned int sctphoff = iph->len;
84 bool payload_csum = false;
86 #ifdef CONFIG_IP_VS_IPV6
87 if (cp->af == AF_INET6 && iph->fragoffs)
91 /* csum_check requires unshared skb */
92 if (!skb_make_writable(skb, sctphoff + sizeof(*sctph)))
95 if (unlikely(cp->app != NULL)) {
98 /* Some checks before mangling */
99 if (pp->csum_check && !pp->csum_check(cp->af, skb, pp))
102 /* Call application helper if needed */
103 ret = ip_vs_app_pkt_out(cp, skb);
106 /* ret=2: csum update is needed after payload mangling */
111 sctph = (void *) skb_network_header(skb) + sctphoff;
113 /* Only update csum if we really have to */
114 if (sctph->source != cp->vport || payload_csum ||
115 skb->ip_summed == CHECKSUM_PARTIAL) {
116 sctph->source = cp->vport;
117 sctp_nat_csum(skb, sctph, sctphoff);
119 skb->ip_summed = CHECKSUM_UNNECESSARY;
126 sctp_dnat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp,
127 struct ip_vs_conn *cp, struct ip_vs_iphdr *iph)
129 sctp_sctphdr_t *sctph;
130 unsigned int sctphoff = iph->len;
131 bool payload_csum = false;
133 #ifdef CONFIG_IP_VS_IPV6
134 if (cp->af == AF_INET6 && iph->fragoffs)
138 /* csum_check requires unshared skb */
139 if (!skb_make_writable(skb, sctphoff + sizeof(*sctph)))
142 if (unlikely(cp->app != NULL)) {
145 /* Some checks before mangling */
146 if (pp->csum_check && !pp->csum_check(cp->af, skb, pp))
149 /* Call application helper if needed */
150 ret = ip_vs_app_pkt_in(cp, skb);
153 /* ret=2: csum update is needed after payload mangling */
158 sctph = (void *) skb_network_header(skb) + sctphoff;
160 /* Only update csum if we really have to */
161 if (sctph->dest != cp->dport || payload_csum ||
162 (skb->ip_summed == CHECKSUM_PARTIAL &&
163 !(skb_dst(skb)->dev->features & NETIF_F_SCTP_CSUM))) {
164 sctph->dest = cp->dport;
165 sctp_nat_csum(skb, sctph, sctphoff);
166 } else if (skb->ip_summed != CHECKSUM_PARTIAL) {
167 skb->ip_summed = CHECKSUM_UNNECESSARY;
174 sctp_csum_check(int af, struct sk_buff *skb, struct ip_vs_protocol *pp)
176 unsigned int sctphoff;
177 struct sctphdr *sh, _sctph;
180 #ifdef CONFIG_IP_VS_IPV6
182 sctphoff = sizeof(struct ipv6hdr);
185 sctphoff = ip_hdrlen(skb);
187 sh = skb_header_pointer(skb, sctphoff, sizeof(_sctph), &_sctph);
192 val = sctp_compute_cksum(skb, sctphoff);
195 /* CRC failure, dump it. */
196 IP_VS_DBG_RL_PKT(0, af, pp, skb, 0,
197 "Failed checksum for");
203 enum ipvs_sctp_event_t {
204 IP_VS_SCTP_DATA = 0, /* DATA, SACK, HEARTBEATs */
207 IP_VS_SCTP_COOKIE_ECHO,
208 IP_VS_SCTP_COOKIE_ACK,
210 IP_VS_SCTP_SHUTDOWN_ACK,
211 IP_VS_SCTP_SHUTDOWN_COMPLETE,
214 IP_VS_SCTP_EVENT_LAST
217 /* RFC 2960, 3.2 Chunk Field Descriptions */
218 static __u8 sctp_events[] = {
219 [SCTP_CID_DATA] = IP_VS_SCTP_DATA,
220 [SCTP_CID_INIT] = IP_VS_SCTP_INIT,
221 [SCTP_CID_INIT_ACK] = IP_VS_SCTP_INIT_ACK,
222 [SCTP_CID_SACK] = IP_VS_SCTP_DATA,
223 [SCTP_CID_HEARTBEAT] = IP_VS_SCTP_DATA,
224 [SCTP_CID_HEARTBEAT_ACK] = IP_VS_SCTP_DATA,
225 [SCTP_CID_ABORT] = IP_VS_SCTP_ABORT,
226 [SCTP_CID_SHUTDOWN] = IP_VS_SCTP_SHUTDOWN,
227 [SCTP_CID_SHUTDOWN_ACK] = IP_VS_SCTP_SHUTDOWN_ACK,
228 [SCTP_CID_ERROR] = IP_VS_SCTP_ERROR,
229 [SCTP_CID_COOKIE_ECHO] = IP_VS_SCTP_COOKIE_ECHO,
230 [SCTP_CID_COOKIE_ACK] = IP_VS_SCTP_COOKIE_ACK,
231 [SCTP_CID_ECN_ECNE] = IP_VS_SCTP_DATA,
232 [SCTP_CID_ECN_CWR] = IP_VS_SCTP_DATA,
233 [SCTP_CID_SHUTDOWN_COMPLETE] = IP_VS_SCTP_SHUTDOWN_COMPLETE,
237 * See RFC 2960, 4. SCTP Association State Diagram
239 * New states (not in diagram):
240 * - INIT1 state: use shorter timeout for dropped INIT packets
241 * - REJECTED state: use shorter timeout if INIT is rejected with ABORT
242 * - INIT, COOKIE_SENT, COOKIE_REPLIED, COOKIE states: for better debugging
244 * The states are as seen in real server. In the diagram, INIT1, INIT,
245 * COOKIE_SENT and COOKIE_REPLIED processing happens in CLOSED state.
247 * States as per packets from client (C) and server (S):
249 * Setup of client connection:
250 * IP_VS_SCTP_S_INIT1: First C:INIT sent, wait for S:INIT-ACK
251 * IP_VS_SCTP_S_INIT: Next C:INIT sent, wait for S:INIT-ACK
252 * IP_VS_SCTP_S_COOKIE_SENT: S:INIT-ACK sent, wait for C:COOKIE-ECHO
253 * IP_VS_SCTP_S_COOKIE_REPLIED: C:COOKIE-ECHO sent, wait for S:COOKIE-ACK
255 * Setup of server connection:
256 * IP_VS_SCTP_S_COOKIE_WAIT: S:INIT sent, wait for C:INIT-ACK
257 * IP_VS_SCTP_S_COOKIE: C:INIT-ACK sent, wait for S:COOKIE-ECHO
258 * IP_VS_SCTP_S_COOKIE_ECHOED: S:COOKIE-ECHO sent, wait for C:COOKIE-ACK
261 #define sNO IP_VS_SCTP_S_NONE
262 #define sI1 IP_VS_SCTP_S_INIT1
263 #define sIN IP_VS_SCTP_S_INIT
264 #define sCS IP_VS_SCTP_S_COOKIE_SENT
265 #define sCR IP_VS_SCTP_S_COOKIE_REPLIED
266 #define sCW IP_VS_SCTP_S_COOKIE_WAIT
267 #define sCO IP_VS_SCTP_S_COOKIE
268 #define sCE IP_VS_SCTP_S_COOKIE_ECHOED
269 #define sES IP_VS_SCTP_S_ESTABLISHED
270 #define sSS IP_VS_SCTP_S_SHUTDOWN_SENT
271 #define sSR IP_VS_SCTP_S_SHUTDOWN_RECEIVED
272 #define sSA IP_VS_SCTP_S_SHUTDOWN_ACK_SENT
273 #define sRJ IP_VS_SCTP_S_REJECTED
274 #define sCL IP_VS_SCTP_S_CLOSED
276 static const __u8 sctp_states
277 [IP_VS_DIR_LAST][IP_VS_SCTP_EVENT_LAST][IP_VS_SCTP_S_LAST] = {
279 /* sNO, sI1, sIN, sCS, sCR, sCW, sCO, sCE, sES, sSS, sSR, sSA, sRJ, sCL*/
280 /* d */{sES, sI1, sIN, sCS, sCR, sCW, sCO, sCE, sES, sSS, sSR, sSA, sRJ, sCL},
281 /* i */{sI1, sIN, sIN, sCS, sCR, sCW, sCO, sCE, sES, sSS, sSR, sSA, sIN, sIN},
282 /* i_a */{sCW, sCW, sCW, sCS, sCR, sCO, sCO, sCE, sES, sSS, sSR, sSA, sRJ, sCL},
283 /* c_e */{sCR, sIN, sIN, sCR, sCR, sCW, sCO, sCE, sES, sSS, sSR, sSA, sRJ, sCL},
284 /* c_a */{sES, sI1, sIN, sCS, sCR, sCW, sCO, sES, sES, sSS, sSR, sSA, sRJ, sCL},
285 /* s */{sSR, sI1, sIN, sCS, sCR, sCW, sCO, sCE, sSR, sSS, sSR, sSA, sRJ, sCL},
286 /* s_a */{sCL, sIN, sIN, sCS, sCR, sCW, sCO, sCE, sES, sCL, sSR, sCL, sRJ, sCL},
287 /* s_c */{sCL, sCL, sCL, sCS, sCR, sCW, sCO, sCE, sES, sSS, sSR, sCL, sRJ, sCL},
288 /* err */{sCL, sI1, sIN, sCS, sCR, sCW, sCO, sCL, sES, sSS, sSR, sSA, sRJ, sCL},
289 /* ab */{sCL, sCL, sCL, sCL, sCL, sRJ, sCL, sCL, sCL, sCL, sCL, sCL, sCL, sCL},
292 /* sNO, sI1, sIN, sCS, sCR, sCW, sCO, sCE, sES, sSS, sSR, sSA, sRJ, sCL*/
293 /* d */{sES, sI1, sIN, sCS, sCR, sCW, sCO, sCE, sES, sSS, sSR, sSA, sRJ, sCL},
294 /* i */{sCW, sCW, sCW, sCW, sCW, sCW, sCW, sCW, sES, sCW, sCW, sCW, sCW, sCW},
295 /* i_a */{sCS, sCS, sCS, sCS, sCR, sCW, sCO, sCE, sES, sSS, sSR, sSA, sRJ, sCL},
296 /* c_e */{sCE, sCE, sCE, sCE, sCE, sCE, sCE, sCE, sES, sSS, sSR, sSA, sRJ, sCL},
297 /* c_a */{sES, sES, sES, sES, sES, sES, sES, sES, sES, sSS, sSR, sSA, sRJ, sCL},
298 /* s */{sSS, sSS, sSS, sSS, sSS, sSS, sSS, sSS, sSS, sSS, sSR, sSA, sRJ, sCL},
299 /* s_a */{sSA, sSA, sSA, sSA, sSA, sCW, sCO, sCE, sES, sSA, sSA, sSA, sRJ, sCL},
300 /* s_c */{sCL, sI1, sIN, sCS, sCR, sCW, sCO, sCE, sES, sSS, sSR, sSA, sRJ, sCL},
301 /* err */{sCL, sCL, sCL, sCL, sCL, sCW, sCO, sCE, sES, sSS, sSR, sSA, sRJ, sCL},
302 /* ab */{sCL, sRJ, sCL, sCL, sCL, sCL, sCL, sCL, sCL, sCL, sCL, sCL, sCL, sCL},
305 /* sNO, sI1, sIN, sCS, sCR, sCW, sCO, sCE, sES, sSS, sSR, sSA, sRJ, sCL*/
306 /* d */{sES, sI1, sIN, sCS, sCR, sES, sCO, sCE, sES, sSS, sSR, sSA, sRJ, sCL},
307 /* i */{sI1, sIN, sIN, sIN, sIN, sIN, sCO, sCE, sES, sSS, sSR, sSA, sIN, sIN},
308 /* i_a */{sCE, sCE, sCE, sCE, sCE, sCE, sCO, sCE, sES, sSS, sSR, sSA, sRJ, sCL},
309 /* c_e */{sES, sES, sES, sES, sES, sES, sCO, sCE, sES, sSS, sSR, sSA, sRJ, sCL},
310 /* c_a */{sES, sI1, sIN, sES, sES, sCW, sES, sES, sES, sSS, sSR, sSA, sRJ, sCL},
311 /* s */{sSR, sI1, sIN, sCS, sCR, sCW, sCO, sCE, sSR, sSS, sSR, sSA, sRJ, sCL},
312 /* s_a */{sCL, sIN, sIN, sCS, sCR, sCW, sCO, sCE, sCL, sCL, sSR, sCL, sRJ, sCL},
313 /* s_c */{sCL, sCL, sCL, sCL, sCL, sCW, sCO, sCE, sES, sSS, sCL, sCL, sRJ, sCL},
314 /* err */{sCL, sI1, sIN, sCS, sCR, sCW, sCO, sCE, sES, sSS, sSR, sSA, sRJ, sCL},
315 /* ab */{sCL, sCL, sCL, sCL, sCL, sRJ, sCL, sCL, sCL, sCL, sCL, sCL, sCL, sCL},
319 #define IP_VS_SCTP_MAX_RTO ((60 + 1) * HZ)
321 /* Timeout table[state] */
322 static const int sctp_timeouts[IP_VS_SCTP_S_LAST + 1] = {
323 [IP_VS_SCTP_S_NONE] = 2 * HZ,
324 [IP_VS_SCTP_S_INIT1] = (0 + 3 + 1) * HZ,
325 [IP_VS_SCTP_S_INIT] = IP_VS_SCTP_MAX_RTO,
326 [IP_VS_SCTP_S_COOKIE_SENT] = IP_VS_SCTP_MAX_RTO,
327 [IP_VS_SCTP_S_COOKIE_REPLIED] = IP_VS_SCTP_MAX_RTO,
328 [IP_VS_SCTP_S_COOKIE_WAIT] = IP_VS_SCTP_MAX_RTO,
329 [IP_VS_SCTP_S_COOKIE] = IP_VS_SCTP_MAX_RTO,
330 [IP_VS_SCTP_S_COOKIE_ECHOED] = IP_VS_SCTP_MAX_RTO,
331 [IP_VS_SCTP_S_ESTABLISHED] = 15 * 60 * HZ,
332 [IP_VS_SCTP_S_SHUTDOWN_SENT] = IP_VS_SCTP_MAX_RTO,
333 [IP_VS_SCTP_S_SHUTDOWN_RECEIVED] = IP_VS_SCTP_MAX_RTO,
334 [IP_VS_SCTP_S_SHUTDOWN_ACK_SENT] = IP_VS_SCTP_MAX_RTO,
335 [IP_VS_SCTP_S_REJECTED] = (0 + 3 + 1) * HZ,
336 [IP_VS_SCTP_S_CLOSED] = IP_VS_SCTP_MAX_RTO,
337 [IP_VS_SCTP_S_LAST] = 2 * HZ,
340 static const char *sctp_state_name_table[IP_VS_SCTP_S_LAST + 1] = {
341 [IP_VS_SCTP_S_NONE] = "NONE",
342 [IP_VS_SCTP_S_INIT1] = "INIT1",
343 [IP_VS_SCTP_S_INIT] = "INIT",
344 [IP_VS_SCTP_S_COOKIE_SENT] = "C-SENT",
345 [IP_VS_SCTP_S_COOKIE_REPLIED] = "C-REPLIED",
346 [IP_VS_SCTP_S_COOKIE_WAIT] = "C-WAIT",
347 [IP_VS_SCTP_S_COOKIE] = "COOKIE",
348 [IP_VS_SCTP_S_COOKIE_ECHOED] = "C-ECHOED",
349 [IP_VS_SCTP_S_ESTABLISHED] = "ESTABLISHED",
350 [IP_VS_SCTP_S_SHUTDOWN_SENT] = "S-SENT",
351 [IP_VS_SCTP_S_SHUTDOWN_RECEIVED] = "S-RECEIVED",
352 [IP_VS_SCTP_S_SHUTDOWN_ACK_SENT] = "S-ACK-SENT",
353 [IP_VS_SCTP_S_REJECTED] = "REJECTED",
354 [IP_VS_SCTP_S_CLOSED] = "CLOSED",
355 [IP_VS_SCTP_S_LAST] = "BUG!",
359 static const char *sctp_state_name(int state)
361 if (state >= IP_VS_SCTP_S_LAST)
363 if (sctp_state_name_table[state])
364 return sctp_state_name_table[state];
369 set_sctp_state(struct ip_vs_proto_data *pd, struct ip_vs_conn *cp,
370 int direction, const struct sk_buff *skb)
372 sctp_chunkhdr_t _sctpch, *sch;
373 unsigned char chunk_type;
374 int event, next_state;
377 #ifdef CONFIG_IP_VS_IPV6
378 ihl = cp->af == AF_INET ? ip_hdrlen(skb) : sizeof(struct ipv6hdr);
380 ihl = ip_hdrlen(skb);
383 cofs = ihl + sizeof(sctp_sctphdr_t);
384 sch = skb_header_pointer(skb, cofs, sizeof(_sctpch), &_sctpch);
388 chunk_type = sch->type;
390 * Section 3: Multiple chunks can be bundled into one SCTP packet
391 * up to the MTU size, except for the INIT, INIT ACK, and
392 * SHUTDOWN COMPLETE chunks. These chunks MUST NOT be bundled with
393 * any other chunk in a packet.
395 * Section 3.3.7: DATA chunks MUST NOT be bundled with ABORT. Control
396 * chunks (except for INIT, INIT ACK, and SHUTDOWN COMPLETE) MAY be
397 * bundled with an ABORT, but they MUST be placed before the ABORT
398 * in the SCTP packet or they will be ignored by the receiver.
400 if ((sch->type == SCTP_CID_COOKIE_ECHO) ||
401 (sch->type == SCTP_CID_COOKIE_ACK)) {
402 int clen = ntohs(sch->length);
404 if (clen >= sizeof(sctp_chunkhdr_t)) {
405 sch = skb_header_pointer(skb, cofs + ALIGN(clen, 4),
406 sizeof(_sctpch), &_sctpch);
407 if (sch && sch->type == SCTP_CID_ABORT)
408 chunk_type = sch->type;
412 event = (chunk_type < sizeof(sctp_events)) ?
413 sctp_events[chunk_type] : IP_VS_SCTP_DATA;
415 /* Update direction to INPUT_ONLY if necessary
416 * or delete NO_OUTPUT flag if output packet detected
418 if (cp->flags & IP_VS_CONN_F_NOOUTPUT) {
419 if (direction == IP_VS_DIR_OUTPUT)
420 cp->flags &= ~IP_VS_CONN_F_NOOUTPUT;
422 direction = IP_VS_DIR_INPUT_ONLY;
425 next_state = sctp_states[direction][event][cp->state];
427 if (next_state != cp->state) {
428 struct ip_vs_dest *dest = cp->dest;
430 IP_VS_DBG_BUF(8, "%s %s %s:%d->"
431 "%s:%d state: %s->%s conn->refcnt:%d\n",
433 ((direction == IP_VS_DIR_OUTPUT) ?
434 "output " : "input "),
435 IP_VS_DBG_ADDR(cp->daf, &cp->daddr),
437 IP_VS_DBG_ADDR(cp->af, &cp->caddr),
439 sctp_state_name(cp->state),
440 sctp_state_name(next_state),
441 atomic_read(&cp->refcnt));
443 if (!(cp->flags & IP_VS_CONN_F_INACTIVE) &&
444 (next_state != IP_VS_SCTP_S_ESTABLISHED)) {
445 atomic_dec(&dest->activeconns);
446 atomic_inc(&dest->inactconns);
447 cp->flags |= IP_VS_CONN_F_INACTIVE;
448 } else if ((cp->flags & IP_VS_CONN_F_INACTIVE) &&
449 (next_state == IP_VS_SCTP_S_ESTABLISHED)) {
450 atomic_inc(&dest->activeconns);
451 atomic_dec(&dest->inactconns);
452 cp->flags &= ~IP_VS_CONN_F_INACTIVE;
457 cp->timeout = pd->timeout_table[cp->state = next_state];
458 else /* What to do ? */
459 cp->timeout = sctp_timeouts[cp->state = next_state];
463 sctp_state_transition(struct ip_vs_conn *cp, int direction,
464 const struct sk_buff *skb, struct ip_vs_proto_data *pd)
466 spin_lock_bh(&cp->lock);
467 set_sctp_state(pd, cp, direction, skb);
468 spin_unlock_bh(&cp->lock);
471 static inline __u16 sctp_app_hashkey(__be16 port)
473 return (((__force u16)port >> SCTP_APP_TAB_BITS) ^ (__force u16)port)
477 static int sctp_register_app(struct net *net, struct ip_vs_app *inc)
481 __be16 port = inc->port;
483 struct netns_ipvs *ipvs = net_ipvs(net);
484 struct ip_vs_proto_data *pd = ip_vs_proto_data_get(net, IPPROTO_SCTP);
486 hash = sctp_app_hashkey(port);
488 list_for_each_entry(i, &ipvs->sctp_apps[hash], p_list) {
489 if (i->port == port) {
494 list_add_rcu(&inc->p_list, &ipvs->sctp_apps[hash]);
495 atomic_inc(&pd->appcnt);
501 static void sctp_unregister_app(struct net *net, struct ip_vs_app *inc)
503 struct ip_vs_proto_data *pd = ip_vs_proto_data_get(net, IPPROTO_SCTP);
505 atomic_dec(&pd->appcnt);
506 list_del_rcu(&inc->p_list);
509 static int sctp_app_conn_bind(struct ip_vs_conn *cp)
511 struct netns_ipvs *ipvs = net_ipvs(ip_vs_conn_net(cp));
513 struct ip_vs_app *inc;
516 /* Default binding: bind app only for NAT */
517 if (IP_VS_FWD_METHOD(cp) != IP_VS_CONN_F_MASQ)
519 /* Lookup application incarnations and bind the right one */
520 hash = sctp_app_hashkey(cp->vport);
523 list_for_each_entry_rcu(inc, &ipvs->sctp_apps[hash], p_list) {
524 if (inc->port == cp->vport) {
525 if (unlikely(!ip_vs_app_inc_get(inc)))
529 IP_VS_DBG_BUF(9, "%s: Binding conn %s:%u->"
530 "%s:%u to app %s on port %u\n",
532 IP_VS_DBG_ADDR(cp->af, &cp->caddr),
534 IP_VS_DBG_ADDR(cp->af, &cp->vaddr),
536 inc->name, ntohs(inc->port));
539 result = inc->init_conn(inc, cp);
548 /* ---------------------------------------------
549 * timeouts is netns related now.
550 * ---------------------------------------------
552 static int __ip_vs_sctp_init(struct net *net, struct ip_vs_proto_data *pd)
554 struct netns_ipvs *ipvs = net_ipvs(net);
556 ip_vs_init_hash_table(ipvs->sctp_apps, SCTP_APP_TAB_SIZE);
557 pd->timeout_table = ip_vs_create_timeout_table((int *)sctp_timeouts,
558 sizeof(sctp_timeouts));
559 if (!pd->timeout_table)
564 static void __ip_vs_sctp_exit(struct net *net, struct ip_vs_proto_data *pd)
566 kfree(pd->timeout_table);
569 struct ip_vs_protocol ip_vs_protocol_sctp = {
571 .protocol = IPPROTO_SCTP,
572 .num_states = IP_VS_SCTP_S_LAST,
576 .init_netns = __ip_vs_sctp_init,
577 .exit_netns = __ip_vs_sctp_exit,
578 .register_app = sctp_register_app,
579 .unregister_app = sctp_unregister_app,
580 .conn_schedule = sctp_conn_schedule,
581 .conn_in_get = ip_vs_conn_in_get_proto,
582 .conn_out_get = ip_vs_conn_out_get_proto,
583 .snat_handler = sctp_snat_handler,
584 .dnat_handler = sctp_dnat_handler,
585 .csum_check = sctp_csum_check,
586 .state_name = sctp_state_name,
587 .state_transition = sctp_state_transition,
588 .app_conn_bind = sctp_app_conn_bind,
589 .debug_packet = ip_vs_tcpudp_debug_packet,
590 .timeout_change = NULL,