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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * ip_vs_proto_udp.c: UDP load balancing support for IPVS | |
3 | * | |
1da177e4 LT |
4 | * Authors: Wensong Zhang <wensong@linuxvirtualserver.org> |
5 | * Julian Anastasov <ja@ssi.bg> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU General Public License | |
9 | * as published by the Free Software Foundation; either version | |
10 | * 2 of the License, or (at your option) any later version. | |
11 | * | |
78b16bde HS |
12 | * Changes: Hans Schillstrom <hans.schillstrom@ericsson.com> |
13 | * Network name space (netns) aware. | |
1da177e4 LT |
14 | * |
15 | */ | |
16 | ||
9aada7ac HE |
17 | #define KMSG_COMPONENT "IPVS" |
18 | #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt | |
19 | ||
14c85021 ACM |
20 | #include <linux/in.h> |
21 | #include <linux/ip.h> | |
1da177e4 | 22 | #include <linux/kernel.h> |
af1e1cf0 | 23 | #include <linux/netfilter.h> |
1da177e4 | 24 | #include <linux/netfilter_ipv4.h> |
14c85021 | 25 | #include <linux/udp.h> |
1da177e4 LT |
26 | |
27 | #include <net/ip_vs.h> | |
c9bdd4b5 | 28 | #include <net/ip.h> |
63f2c046 | 29 | #include <net/ip6_checksum.h> |
1da177e4 | 30 | |
1da177e4 | 31 | static int |
9330419d | 32 | udp_conn_schedule(int af, struct sk_buff *skb, struct ip_vs_proto_data *pd, |
d4383f04 JDB |
33 | int *verdict, struct ip_vs_conn **cpp, |
34 | struct ip_vs_iphdr *iph) | |
1da177e4 | 35 | { |
fc723250 | 36 | struct net *net; |
1da177e4 LT |
37 | struct ip_vs_service *svc; |
38 | struct udphdr _udph, *uh; | |
39 | ||
d4383f04 JDB |
40 | /* IPv6 fragments, only first fragment will hit this */ |
41 | uh = skb_header_pointer(skb, iph->len, sizeof(_udph), &_udph); | |
1da177e4 LT |
42 | if (uh == NULL) { |
43 | *verdict = NF_DROP; | |
44 | return 0; | |
45 | } | |
fc723250 | 46 | net = skb_net(skb); |
ceec4c38 JA |
47 | rcu_read_lock(); |
48 | svc = ip_vs_service_find(net, af, skb->mark, iph->protocol, | |
49 | &iph->daddr, uh->dest); | |
3c2e0505 | 50 | if (svc) { |
190ecd27 JA |
51 | int ignored; |
52 | ||
a0840e2e | 53 | if (ip_vs_todrop(net_ipvs(net))) { |
1da177e4 LT |
54 | /* |
55 | * It seems that we are very loaded. | |
56 | * We have to drop this packet :( | |
57 | */ | |
ceec4c38 | 58 | rcu_read_unlock(); |
1da177e4 LT |
59 | *verdict = NF_DROP; |
60 | return 0; | |
61 | } | |
62 | ||
63 | /* | |
64 | * Let the virtual server select a real server for the | |
65 | * incoming connection, and create a connection entry. | |
66 | */ | |
d4383f04 | 67 | *cpp = ip_vs_schedule(svc, skb, pd, &ignored, iph); |
a5959d53 HS |
68 | if (!*cpp && ignored <= 0) { |
69 | if (!ignored) | |
d4383f04 | 70 | *verdict = ip_vs_leave(svc, skb, pd, iph); |
ceec4c38 | 71 | else |
a5959d53 | 72 | *verdict = NF_DROP; |
ceec4c38 | 73 | rcu_read_unlock(); |
1da177e4 LT |
74 | return 0; |
75 | } | |
1da177e4 | 76 | } |
ceec4c38 | 77 | rcu_read_unlock(); |
a5959d53 | 78 | /* NF_ACCEPT */ |
1da177e4 LT |
79 | return 1; |
80 | } | |
81 | ||
82 | ||
83 | static inline void | |
0bbdd42b JV |
84 | udp_fast_csum_update(int af, struct udphdr *uhdr, |
85 | const union nf_inet_addr *oldip, | |
86 | const union nf_inet_addr *newip, | |
014d730d | 87 | __be16 oldport, __be16 newport) |
1da177e4 | 88 | { |
0bbdd42b JV |
89 | #ifdef CONFIG_IP_VS_IPV6 |
90 | if (af == AF_INET6) | |
91 | uhdr->check = | |
92 | csum_fold(ip_vs_check_diff16(oldip->ip6, newip->ip6, | |
93 | ip_vs_check_diff2(oldport, newport, | |
94 | ~csum_unfold(uhdr->check)))); | |
95 | else | |
96 | #endif | |
97 | uhdr->check = | |
98 | csum_fold(ip_vs_check_diff4(oldip->ip, newip->ip, | |
99 | ip_vs_check_diff2(oldport, newport, | |
100 | ~csum_unfold(uhdr->check)))); | |
1da177e4 | 101 | if (!uhdr->check) |
f6ab0288 | 102 | uhdr->check = CSUM_MANGLED_0; |
1da177e4 LT |
103 | } |
104 | ||
503e81f6 SH |
105 | static inline void |
106 | udp_partial_csum_update(int af, struct udphdr *uhdr, | |
107 | const union nf_inet_addr *oldip, | |
108 | const union nf_inet_addr *newip, | |
109 | __be16 oldlen, __be16 newlen) | |
110 | { | |
111 | #ifdef CONFIG_IP_VS_IPV6 | |
112 | if (af == AF_INET6) | |
113 | uhdr->check = | |
5bc9068e | 114 | ~csum_fold(ip_vs_check_diff16(oldip->ip6, newip->ip6, |
503e81f6 | 115 | ip_vs_check_diff2(oldlen, newlen, |
5bc9068e | 116 | csum_unfold(uhdr->check)))); |
503e81f6 SH |
117 | else |
118 | #endif | |
119 | uhdr->check = | |
5bc9068e | 120 | ~csum_fold(ip_vs_check_diff4(oldip->ip, newip->ip, |
503e81f6 | 121 | ip_vs_check_diff2(oldlen, newlen, |
5bc9068e | 122 | csum_unfold(uhdr->check)))); |
503e81f6 SH |
123 | } |
124 | ||
125 | ||
1da177e4 | 126 | static int |
d4383f04 JDB |
127 | udp_snat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp, |
128 | struct ip_vs_conn *cp, struct ip_vs_iphdr *iph) | |
1da177e4 LT |
129 | { |
130 | struct udphdr *udph; | |
d4383f04 | 131 | unsigned int udphoff = iph->len; |
503e81f6 | 132 | int oldlen; |
8b27b10f | 133 | int payload_csum = 0; |
0bbdd42b JV |
134 | |
135 | #ifdef CONFIG_IP_VS_IPV6 | |
d4383f04 | 136 | if (cp->af == AF_INET6 && iph->fragoffs) |
63dca2c0 | 137 | return 1; |
0bbdd42b | 138 | #endif |
503e81f6 | 139 | oldlen = skb->len - udphoff; |
1da177e4 LT |
140 | |
141 | /* csum_check requires unshared skb */ | |
3db05fea | 142 | if (!skb_make_writable(skb, udphoff+sizeof(*udph))) |
1da177e4 LT |
143 | return 0; |
144 | ||
145 | if (unlikely(cp->app != NULL)) { | |
8b27b10f JA |
146 | int ret; |
147 | ||
1da177e4 | 148 | /* Some checks before mangling */ |
0bbdd42b | 149 | if (pp->csum_check && !pp->csum_check(cp->af, skb, pp)) |
1da177e4 LT |
150 | return 0; |
151 | ||
152 | /* | |
153 | * Call application helper if needed | |
154 | */ | |
8b27b10f | 155 | if (!(ret = ip_vs_app_pkt_out(cp, skb))) |
1da177e4 | 156 | return 0; |
8b27b10f JA |
157 | /* ret=2: csum update is needed after payload mangling */ |
158 | if (ret == 1) | |
159 | oldlen = skb->len - udphoff; | |
160 | else | |
161 | payload_csum = 1; | |
1da177e4 LT |
162 | } |
163 | ||
0bbdd42b | 164 | udph = (void *)skb_network_header(skb) + udphoff; |
1da177e4 LT |
165 | udph->source = cp->vport; |
166 | ||
167 | /* | |
168 | * Adjust UDP checksums | |
169 | */ | |
503e81f6 SH |
170 | if (skb->ip_summed == CHECKSUM_PARTIAL) { |
171 | udp_partial_csum_update(cp->af, udph, &cp->daddr, &cp->vaddr, | |
ca62059b HH |
172 | htons(oldlen), |
173 | htons(skb->len - udphoff)); | |
8b27b10f | 174 | } else if (!payload_csum && (udph->check != 0)) { |
1da177e4 | 175 | /* Only port and addr are changed, do fast csum update */ |
0bbdd42b | 176 | udp_fast_csum_update(cp->af, udph, &cp->daddr, &cp->vaddr, |
1da177e4 | 177 | cp->dport, cp->vport); |
3db05fea | 178 | if (skb->ip_summed == CHECKSUM_COMPLETE) |
8b27b10f JA |
179 | skb->ip_summed = (cp->app && pp->csum_check) ? |
180 | CHECKSUM_UNNECESSARY : CHECKSUM_NONE; | |
1da177e4 LT |
181 | } else { |
182 | /* full checksum calculation */ | |
183 | udph->check = 0; | |
3db05fea | 184 | skb->csum = skb_checksum(skb, udphoff, skb->len - udphoff, 0); |
0bbdd42b JV |
185 | #ifdef CONFIG_IP_VS_IPV6 |
186 | if (cp->af == AF_INET6) | |
187 | udph->check = csum_ipv6_magic(&cp->vaddr.in6, | |
188 | &cp->caddr.in6, | |
189 | skb->len - udphoff, | |
190 | cp->protocol, skb->csum); | |
191 | else | |
192 | #endif | |
193 | udph->check = csum_tcpudp_magic(cp->vaddr.ip, | |
194 | cp->caddr.ip, | |
195 | skb->len - udphoff, | |
196 | cp->protocol, | |
197 | skb->csum); | |
1da177e4 | 198 | if (udph->check == 0) |
f6ab0288 | 199 | udph->check = CSUM_MANGLED_0; |
8b27b10f | 200 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
1da177e4 LT |
201 | IP_VS_DBG(11, "O-pkt: %s O-csum=%d (+%zd)\n", |
202 | pp->name, udph->check, | |
203 | (char*)&(udph->check) - (char*)udph); | |
204 | } | |
205 | return 1; | |
206 | } | |
207 | ||
208 | ||
209 | static int | |
d4383f04 JDB |
210 | udp_dnat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp, |
211 | struct ip_vs_conn *cp, struct ip_vs_iphdr *iph) | |
1da177e4 LT |
212 | { |
213 | struct udphdr *udph; | |
d4383f04 | 214 | unsigned int udphoff = iph->len; |
503e81f6 | 215 | int oldlen; |
8b27b10f | 216 | int payload_csum = 0; |
0bbdd42b JV |
217 | |
218 | #ifdef CONFIG_IP_VS_IPV6 | |
d4383f04 | 219 | if (cp->af == AF_INET6 && iph->fragoffs) |
63dca2c0 | 220 | return 1; |
0bbdd42b | 221 | #endif |
503e81f6 | 222 | oldlen = skb->len - udphoff; |
1da177e4 LT |
223 | |
224 | /* csum_check requires unshared skb */ | |
3db05fea | 225 | if (!skb_make_writable(skb, udphoff+sizeof(*udph))) |
1da177e4 LT |
226 | return 0; |
227 | ||
228 | if (unlikely(cp->app != NULL)) { | |
8b27b10f JA |
229 | int ret; |
230 | ||
1da177e4 | 231 | /* Some checks before mangling */ |
0bbdd42b | 232 | if (pp->csum_check && !pp->csum_check(cp->af, skb, pp)) |
1da177e4 LT |
233 | return 0; |
234 | ||
235 | /* | |
236 | * Attempt ip_vs_app call. | |
237 | * It will fix ip_vs_conn | |
238 | */ | |
8b27b10f | 239 | if (!(ret = ip_vs_app_pkt_in(cp, skb))) |
1da177e4 | 240 | return 0; |
8b27b10f JA |
241 | /* ret=2: csum update is needed after payload mangling */ |
242 | if (ret == 1) | |
243 | oldlen = skb->len - udphoff; | |
244 | else | |
245 | payload_csum = 1; | |
1da177e4 LT |
246 | } |
247 | ||
0bbdd42b | 248 | udph = (void *)skb_network_header(skb) + udphoff; |
1da177e4 LT |
249 | udph->dest = cp->dport; |
250 | ||
251 | /* | |
252 | * Adjust UDP checksums | |
253 | */ | |
503e81f6 | 254 | if (skb->ip_summed == CHECKSUM_PARTIAL) { |
5bc9068e | 255 | udp_partial_csum_update(cp->af, udph, &cp->vaddr, &cp->daddr, |
ca62059b HH |
256 | htons(oldlen), |
257 | htons(skb->len - udphoff)); | |
8b27b10f | 258 | } else if (!payload_csum && (udph->check != 0)) { |
1da177e4 | 259 | /* Only port and addr are changed, do fast csum update */ |
0bbdd42b | 260 | udp_fast_csum_update(cp->af, udph, &cp->vaddr, &cp->daddr, |
1da177e4 | 261 | cp->vport, cp->dport); |
3db05fea | 262 | if (skb->ip_summed == CHECKSUM_COMPLETE) |
8b27b10f JA |
263 | skb->ip_summed = (cp->app && pp->csum_check) ? |
264 | CHECKSUM_UNNECESSARY : CHECKSUM_NONE; | |
1da177e4 LT |
265 | } else { |
266 | /* full checksum calculation */ | |
267 | udph->check = 0; | |
3db05fea | 268 | skb->csum = skb_checksum(skb, udphoff, skb->len - udphoff, 0); |
0bbdd42b JV |
269 | #ifdef CONFIG_IP_VS_IPV6 |
270 | if (cp->af == AF_INET6) | |
271 | udph->check = csum_ipv6_magic(&cp->caddr.in6, | |
272 | &cp->daddr.in6, | |
273 | skb->len - udphoff, | |
274 | cp->protocol, skb->csum); | |
275 | else | |
276 | #endif | |
277 | udph->check = csum_tcpudp_magic(cp->caddr.ip, | |
278 | cp->daddr.ip, | |
279 | skb->len - udphoff, | |
280 | cp->protocol, | |
281 | skb->csum); | |
1da177e4 | 282 | if (udph->check == 0) |
f6ab0288 | 283 | udph->check = CSUM_MANGLED_0; |
3db05fea | 284 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
1da177e4 LT |
285 | } |
286 | return 1; | |
287 | } | |
288 | ||
289 | ||
290 | static int | |
51ef348b | 291 | udp_csum_check(int af, struct sk_buff *skb, struct ip_vs_protocol *pp) |
1da177e4 LT |
292 | { |
293 | struct udphdr _udph, *uh; | |
51ef348b JV |
294 | unsigned int udphoff; |
295 | ||
296 | #ifdef CONFIG_IP_VS_IPV6 | |
297 | if (af == AF_INET6) | |
298 | udphoff = sizeof(struct ipv6hdr); | |
299 | else | |
300 | #endif | |
301 | udphoff = ip_hdrlen(skb); | |
1da177e4 LT |
302 | |
303 | uh = skb_header_pointer(skb, udphoff, sizeof(_udph), &_udph); | |
304 | if (uh == NULL) | |
305 | return 0; | |
306 | ||
307 | if (uh->check != 0) { | |
308 | switch (skb->ip_summed) { | |
309 | case CHECKSUM_NONE: | |
310 | skb->csum = skb_checksum(skb, udphoff, | |
311 | skb->len - udphoff, 0); | |
84fa7933 | 312 | case CHECKSUM_COMPLETE: |
51ef348b JV |
313 | #ifdef CONFIG_IP_VS_IPV6 |
314 | if (af == AF_INET6) { | |
315 | if (csum_ipv6_magic(&ipv6_hdr(skb)->saddr, | |
316 | &ipv6_hdr(skb)->daddr, | |
317 | skb->len - udphoff, | |
318 | ipv6_hdr(skb)->nexthdr, | |
319 | skb->csum)) { | |
0d79641a | 320 | IP_VS_DBG_RL_PKT(0, af, pp, skb, 0, |
51ef348b JV |
321 | "Failed checksum for"); |
322 | return 0; | |
323 | } | |
324 | } else | |
325 | #endif | |
326 | if (csum_tcpudp_magic(ip_hdr(skb)->saddr, | |
327 | ip_hdr(skb)->daddr, | |
328 | skb->len - udphoff, | |
329 | ip_hdr(skb)->protocol, | |
330 | skb->csum)) { | |
0d79641a | 331 | IP_VS_DBG_RL_PKT(0, af, pp, skb, 0, |
51ef348b JV |
332 | "Failed checksum for"); |
333 | return 0; | |
334 | } | |
1da177e4 LT |
335 | break; |
336 | default: | |
84fa7933 | 337 | /* No need to checksum. */ |
1da177e4 LT |
338 | break; |
339 | } | |
340 | } | |
341 | return 1; | |
342 | } | |
343 | ||
75e7ce66 | 344 | static inline __u16 udp_app_hashkey(__be16 port) |
1da177e4 | 345 | { |
75e7ce66 AV |
346 | return (((__force u16)port >> UDP_APP_TAB_BITS) ^ (__force u16)port) |
347 | & UDP_APP_TAB_MASK; | |
1da177e4 LT |
348 | } |
349 | ||
350 | ||
ab8a5e84 | 351 | static int udp_register_app(struct net *net, struct ip_vs_app *inc) |
1da177e4 LT |
352 | { |
353 | struct ip_vs_app *i; | |
75e7ce66 AV |
354 | __u16 hash; |
355 | __be16 port = inc->port; | |
1da177e4 | 356 | int ret = 0; |
ab8a5e84 HS |
357 | struct netns_ipvs *ipvs = net_ipvs(net); |
358 | struct ip_vs_proto_data *pd = ip_vs_proto_data_get(net, IPPROTO_UDP); | |
1da177e4 LT |
359 | |
360 | hash = udp_app_hashkey(port); | |
361 | ||
78b16bde | 362 | list_for_each_entry(i, &ipvs->udp_apps[hash], p_list) { |
1da177e4 LT |
363 | if (i->port == port) { |
364 | ret = -EEXIST; | |
365 | goto out; | |
366 | } | |
367 | } | |
363c97d7 | 368 | list_add_rcu(&inc->p_list, &ipvs->udp_apps[hash]); |
9bbac6a9 | 369 | atomic_inc(&pd->appcnt); |
1da177e4 LT |
370 | |
371 | out: | |
1da177e4 LT |
372 | return ret; |
373 | } | |
374 | ||
375 | ||
376 | static void | |
ab8a5e84 | 377 | udp_unregister_app(struct net *net, struct ip_vs_app *inc) |
1da177e4 | 378 | { |
ab8a5e84 | 379 | struct ip_vs_proto_data *pd = ip_vs_proto_data_get(net, IPPROTO_UDP); |
78b16bde | 380 | |
9bbac6a9 | 381 | atomic_dec(&pd->appcnt); |
363c97d7 | 382 | list_del_rcu(&inc->p_list); |
1da177e4 LT |
383 | } |
384 | ||
385 | ||
386 | static int udp_app_conn_bind(struct ip_vs_conn *cp) | |
387 | { | |
6e67e586 | 388 | struct netns_ipvs *ipvs = net_ipvs(ip_vs_conn_net(cp)); |
1da177e4 LT |
389 | int hash; |
390 | struct ip_vs_app *inc; | |
391 | int result = 0; | |
392 | ||
393 | /* Default binding: bind app only for NAT */ | |
394 | if (IP_VS_FWD_METHOD(cp) != IP_VS_CONN_F_MASQ) | |
395 | return 0; | |
396 | ||
397 | /* Lookup application incarnations and bind the right one */ | |
398 | hash = udp_app_hashkey(cp->vport); | |
399 | ||
363c97d7 JA |
400 | rcu_read_lock(); |
401 | list_for_each_entry_rcu(inc, &ipvs->udp_apps[hash], p_list) { | |
1da177e4 LT |
402 | if (inc->port == cp->vport) { |
403 | if (unlikely(!ip_vs_app_inc_get(inc))) | |
404 | break; | |
363c97d7 | 405 | rcu_read_unlock(); |
1da177e4 | 406 | |
1e3e238e | 407 | IP_VS_DBG_BUF(9, "%s(): Binding conn %s:%u->" |
cfc78c5a JV |
408 | "%s:%u to app %s on port %u\n", |
409 | __func__, | |
410 | IP_VS_DBG_ADDR(cp->af, &cp->caddr), | |
411 | ntohs(cp->cport), | |
412 | IP_VS_DBG_ADDR(cp->af, &cp->vaddr), | |
413 | ntohs(cp->vport), | |
414 | inc->name, ntohs(inc->port)); | |
415 | ||
1da177e4 LT |
416 | cp->app = inc; |
417 | if (inc->init_conn) | |
418 | result = inc->init_conn(inc, cp); | |
419 | goto out; | |
420 | } | |
421 | } | |
363c97d7 | 422 | rcu_read_unlock(); |
1da177e4 LT |
423 | |
424 | out: | |
425 | return result; | |
426 | } | |
427 | ||
428 | ||
78b16bde | 429 | static const int udp_timeouts[IP_VS_UDP_S_LAST+1] = { |
1da177e4 LT |
430 | [IP_VS_UDP_S_NORMAL] = 5*60*HZ, |
431 | [IP_VS_UDP_S_LAST] = 2*HZ, | |
432 | }; | |
433 | ||
36cbd3dc | 434 | static const char *const udp_state_name_table[IP_VS_UDP_S_LAST+1] = { |
1da177e4 LT |
435 | [IP_VS_UDP_S_NORMAL] = "UDP", |
436 | [IP_VS_UDP_S_LAST] = "BUG!", | |
437 | }; | |
438 | ||
1da177e4 LT |
439 | static const char * udp_state_name(int state) |
440 | { | |
441 | if (state >= IP_VS_UDP_S_LAST) | |
442 | return "ERR!"; | |
443 | return udp_state_name_table[state] ? udp_state_name_table[state] : "?"; | |
444 | } | |
445 | ||
4a516f11 | 446 | static void |
1da177e4 LT |
447 | udp_state_transition(struct ip_vs_conn *cp, int direction, |
448 | const struct sk_buff *skb, | |
9330419d | 449 | struct ip_vs_proto_data *pd) |
1da177e4 | 450 | { |
78b16bde HS |
451 | if (unlikely(!pd)) { |
452 | pr_err("UDP no ns data\n"); | |
4a516f11 | 453 | return; |
78b16bde HS |
454 | } |
455 | ||
456 | cp->timeout = pd->timeout_table[IP_VS_UDP_S_NORMAL]; | |
1da177e4 LT |
457 | } |
458 | ||
582b8e3e | 459 | static int __udp_init(struct net *net, struct ip_vs_proto_data *pd) |
1da177e4 | 460 | { |
78b16bde HS |
461 | struct netns_ipvs *ipvs = net_ipvs(net); |
462 | ||
463 | ip_vs_init_hash_table(ipvs->udp_apps, UDP_APP_TAB_SIZE); | |
78b16bde HS |
464 | pd->timeout_table = ip_vs_create_timeout_table((int *)udp_timeouts, |
465 | sizeof(udp_timeouts)); | |
582b8e3e HS |
466 | if (!pd->timeout_table) |
467 | return -ENOMEM; | |
468 | return 0; | |
1da177e4 LT |
469 | } |
470 | ||
78b16bde | 471 | static void __udp_exit(struct net *net, struct ip_vs_proto_data *pd) |
1da177e4 | 472 | { |
78b16bde | 473 | kfree(pd->timeout_table); |
1da177e4 LT |
474 | } |
475 | ||
476 | ||
477 | struct ip_vs_protocol ip_vs_protocol_udp = { | |
478 | .name = "UDP", | |
479 | .protocol = IPPROTO_UDP, | |
2ad17def | 480 | .num_states = IP_VS_UDP_S_LAST, |
1da177e4 | 481 | .dont_defrag = 0, |
78b16bde HS |
482 | .init = NULL, |
483 | .exit = NULL, | |
484 | .init_netns = __udp_init, | |
485 | .exit_netns = __udp_exit, | |
1da177e4 | 486 | .conn_schedule = udp_conn_schedule, |
5c0d2374 SH |
487 | .conn_in_get = ip_vs_conn_in_get_proto, |
488 | .conn_out_get = ip_vs_conn_out_get_proto, | |
1da177e4 LT |
489 | .snat_handler = udp_snat_handler, |
490 | .dnat_handler = udp_dnat_handler, | |
491 | .csum_check = udp_csum_check, | |
492 | .state_transition = udp_state_transition, | |
493 | .state_name = udp_state_name, | |
494 | .register_app = udp_register_app, | |
495 | .unregister_app = udp_unregister_app, | |
496 | .app_conn_bind = udp_app_conn_bind, | |
497 | .debug_packet = ip_vs_tcpudp_debug_packet, | |
498 | .timeout_change = NULL, | |
1da177e4 | 499 | }; |