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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * IPVS An implementation of the IP virtual server support for the | |
3 | * LINUX operating system. IPVS is now implemented as a module | |
4 | * over the NetFilter framework. IPVS can be used to build a | |
5 | * high-performance and highly available server based on a | |
6 | * cluster of servers. | |
7 | * | |
1da177e4 LT |
8 | * Authors: Wensong Zhang <wensong@linuxvirtualserver.org> |
9 | * Peter Kese <peter.kese@ijs.si> | |
10 | * Julian Anastasov <ja@ssi.bg> | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or | |
13 | * modify it under the terms of the GNU General Public License | |
14 | * as published by the Free Software Foundation; either version | |
15 | * 2 of the License, or (at your option) any later version. | |
16 | * | |
17 | * Changes: | |
18 | * | |
19 | */ | |
20 | ||
9aada7ac HE |
21 | #define KMSG_COMPONENT "IPVS" |
22 | #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt | |
23 | ||
1da177e4 LT |
24 | #include <linux/module.h> |
25 | #include <linux/init.h> | |
26 | #include <linux/types.h> | |
4fc268d2 | 27 | #include <linux/capability.h> |
1da177e4 LT |
28 | #include <linux/fs.h> |
29 | #include <linux/sysctl.h> | |
30 | #include <linux/proc_fs.h> | |
31 | #include <linux/workqueue.h> | |
32 | #include <linux/swap.h> | |
1da177e4 | 33 | #include <linux/seq_file.h> |
5a0e3ad6 | 34 | #include <linux/slab.h> |
1da177e4 LT |
35 | |
36 | #include <linux/netfilter.h> | |
37 | #include <linux/netfilter_ipv4.h> | |
14cc3e2b | 38 | #include <linux/mutex.h> |
1da177e4 | 39 | |
457c4cbc | 40 | #include <net/net_namespace.h> |
9330419d | 41 | #include <linux/nsproxy.h> |
1da177e4 | 42 | #include <net/ip.h> |
09571c7a VB |
43 | #ifdef CONFIG_IP_VS_IPV6 |
44 | #include <net/ipv6.h> | |
45 | #include <net/ip6_route.h> | |
46 | #endif | |
14c85021 | 47 | #include <net/route.h> |
1da177e4 | 48 | #include <net/sock.h> |
9a812198 | 49 | #include <net/genetlink.h> |
1da177e4 LT |
50 | |
51 | #include <asm/uaccess.h> | |
52 | ||
53 | #include <net/ip_vs.h> | |
54 | ||
55 | /* semaphore for IPVS sockopts. And, [gs]etsockopt may sleep. */ | |
14cc3e2b | 56 | static DEFINE_MUTEX(__ip_vs_mutex); |
1da177e4 | 57 | |
1da177e4 | 58 | /* sysctl variables */ |
1da177e4 LT |
59 | |
60 | #ifdef CONFIG_IP_VS_DEBUG | |
61 | static int sysctl_ip_vs_debug_level = 0; | |
62 | ||
63 | int ip_vs_get_debug_level(void) | |
64 | { | |
65 | return sysctl_ip_vs_debug_level; | |
66 | } | |
67 | #endif | |
68 | ||
7a4f0761 HS |
69 | |
70 | /* Protos */ | |
578bc3ef | 71 | static void __ip_vs_del_service(struct ip_vs_service *svc, bool cleanup); |
7a4f0761 HS |
72 | |
73 | ||
09571c7a VB |
74 | #ifdef CONFIG_IP_VS_IPV6 |
75 | /* Taken from rt6_fill_node() in net/ipv6/route.c, is there a better way? */ | |
c24584c0 ED |
76 | static bool __ip_vs_addr_is_local_v6(struct net *net, |
77 | const struct in6_addr *addr) | |
09571c7a | 78 | { |
4c9483b2 DM |
79 | struct flowi6 fl6 = { |
80 | .daddr = *addr, | |
09571c7a | 81 | }; |
c24584c0 ED |
82 | struct dst_entry *dst = ip6_route_output(net, NULL, &fl6); |
83 | bool is_local; | |
09571c7a | 84 | |
c24584c0 | 85 | is_local = !dst->error && dst->dev && (dst->dev->flags & IFF_LOOPBACK); |
09571c7a | 86 | |
c24584c0 ED |
87 | dst_release(dst); |
88 | return is_local; | |
09571c7a VB |
89 | } |
90 | #endif | |
14e40546 SH |
91 | |
92 | #ifdef CONFIG_SYSCTL | |
1da177e4 | 93 | /* |
af9debd4 JA |
94 | * update_defense_level is called from keventd and from sysctl, |
95 | * so it needs to protect itself from softirqs | |
1da177e4 | 96 | */ |
9330419d | 97 | static void update_defense_level(struct netns_ipvs *ipvs) |
1da177e4 LT |
98 | { |
99 | struct sysinfo i; | |
100 | static int old_secure_tcp = 0; | |
101 | int availmem; | |
102 | int nomem; | |
103 | int to_change = -1; | |
104 | ||
105 | /* we only count free and buffered memory (in pages) */ | |
106 | si_meminfo(&i); | |
107 | availmem = i.freeram + i.bufferram; | |
108 | /* however in linux 2.5 the i.bufferram is total page cache size, | |
109 | we need adjust it */ | |
110 | /* si_swapinfo(&i); */ | |
111 | /* availmem = availmem - (i.totalswap - i.freeswap); */ | |
112 | ||
a0840e2e | 113 | nomem = (availmem < ipvs->sysctl_amemthresh); |
1da177e4 | 114 | |
af9debd4 JA |
115 | local_bh_disable(); |
116 | ||
1da177e4 | 117 | /* drop_entry */ |
a0840e2e HS |
118 | spin_lock(&ipvs->dropentry_lock); |
119 | switch (ipvs->sysctl_drop_entry) { | |
1da177e4 | 120 | case 0: |
a0840e2e | 121 | atomic_set(&ipvs->dropentry, 0); |
1da177e4 LT |
122 | break; |
123 | case 1: | |
124 | if (nomem) { | |
a0840e2e HS |
125 | atomic_set(&ipvs->dropentry, 1); |
126 | ipvs->sysctl_drop_entry = 2; | |
1da177e4 | 127 | } else { |
a0840e2e | 128 | atomic_set(&ipvs->dropentry, 0); |
1da177e4 LT |
129 | } |
130 | break; | |
131 | case 2: | |
132 | if (nomem) { | |
a0840e2e | 133 | atomic_set(&ipvs->dropentry, 1); |
1da177e4 | 134 | } else { |
a0840e2e HS |
135 | atomic_set(&ipvs->dropentry, 0); |
136 | ipvs->sysctl_drop_entry = 1; | |
1da177e4 LT |
137 | }; |
138 | break; | |
139 | case 3: | |
a0840e2e | 140 | atomic_set(&ipvs->dropentry, 1); |
1da177e4 LT |
141 | break; |
142 | } | |
a0840e2e | 143 | spin_unlock(&ipvs->dropentry_lock); |
1da177e4 LT |
144 | |
145 | /* drop_packet */ | |
a0840e2e HS |
146 | spin_lock(&ipvs->droppacket_lock); |
147 | switch (ipvs->sysctl_drop_packet) { | |
1da177e4 | 148 | case 0: |
a0840e2e | 149 | ipvs->drop_rate = 0; |
1da177e4 LT |
150 | break; |
151 | case 1: | |
152 | if (nomem) { | |
a0840e2e HS |
153 | ipvs->drop_rate = ipvs->drop_counter |
154 | = ipvs->sysctl_amemthresh / | |
155 | (ipvs->sysctl_amemthresh-availmem); | |
156 | ipvs->sysctl_drop_packet = 2; | |
1da177e4 | 157 | } else { |
a0840e2e | 158 | ipvs->drop_rate = 0; |
1da177e4 LT |
159 | } |
160 | break; | |
161 | case 2: | |
162 | if (nomem) { | |
a0840e2e HS |
163 | ipvs->drop_rate = ipvs->drop_counter |
164 | = ipvs->sysctl_amemthresh / | |
165 | (ipvs->sysctl_amemthresh-availmem); | |
1da177e4 | 166 | } else { |
a0840e2e HS |
167 | ipvs->drop_rate = 0; |
168 | ipvs->sysctl_drop_packet = 1; | |
1da177e4 LT |
169 | } |
170 | break; | |
171 | case 3: | |
a0840e2e | 172 | ipvs->drop_rate = ipvs->sysctl_am_droprate; |
1da177e4 LT |
173 | break; |
174 | } | |
a0840e2e | 175 | spin_unlock(&ipvs->droppacket_lock); |
1da177e4 LT |
176 | |
177 | /* secure_tcp */ | |
a0840e2e HS |
178 | spin_lock(&ipvs->securetcp_lock); |
179 | switch (ipvs->sysctl_secure_tcp) { | |
1da177e4 LT |
180 | case 0: |
181 | if (old_secure_tcp >= 2) | |
182 | to_change = 0; | |
183 | break; | |
184 | case 1: | |
185 | if (nomem) { | |
186 | if (old_secure_tcp < 2) | |
187 | to_change = 1; | |
a0840e2e | 188 | ipvs->sysctl_secure_tcp = 2; |
1da177e4 LT |
189 | } else { |
190 | if (old_secure_tcp >= 2) | |
191 | to_change = 0; | |
192 | } | |
193 | break; | |
194 | case 2: | |
195 | if (nomem) { | |
196 | if (old_secure_tcp < 2) | |
197 | to_change = 1; | |
198 | } else { | |
199 | if (old_secure_tcp >= 2) | |
200 | to_change = 0; | |
a0840e2e | 201 | ipvs->sysctl_secure_tcp = 1; |
1da177e4 LT |
202 | } |
203 | break; | |
204 | case 3: | |
205 | if (old_secure_tcp < 2) | |
206 | to_change = 1; | |
207 | break; | |
208 | } | |
a0840e2e | 209 | old_secure_tcp = ipvs->sysctl_secure_tcp; |
1da177e4 | 210 | if (to_change >= 0) |
9330419d | 211 | ip_vs_protocol_timeout_change(ipvs, |
a0840e2e HS |
212 | ipvs->sysctl_secure_tcp > 1); |
213 | spin_unlock(&ipvs->securetcp_lock); | |
af9debd4 JA |
214 | |
215 | local_bh_enable(); | |
1da177e4 LT |
216 | } |
217 | ||
218 | ||
219 | /* | |
220 | * Timer for checking the defense | |
221 | */ | |
222 | #define DEFENSE_TIMER_PERIOD 1*HZ | |
1da177e4 | 223 | |
c4028958 | 224 | static void defense_work_handler(struct work_struct *work) |
1da177e4 | 225 | { |
f6340ee0 HS |
226 | struct netns_ipvs *ipvs = |
227 | container_of(work, struct netns_ipvs, defense_work.work); | |
9330419d HS |
228 | |
229 | update_defense_level(ipvs); | |
a0840e2e | 230 | if (atomic_read(&ipvs->dropentry)) |
f6340ee0 HS |
231 | ip_vs_random_dropentry(ipvs->net); |
232 | schedule_delayed_work(&ipvs->defense_work, DEFENSE_TIMER_PERIOD); | |
1da177e4 | 233 | } |
14e40546 | 234 | #endif |
1da177e4 LT |
235 | |
236 | int | |
237 | ip_vs_use_count_inc(void) | |
238 | { | |
239 | return try_module_get(THIS_MODULE); | |
240 | } | |
241 | ||
242 | void | |
243 | ip_vs_use_count_dec(void) | |
244 | { | |
245 | module_put(THIS_MODULE); | |
246 | } | |
247 | ||
248 | ||
249 | /* | |
250 | * Hash table: for virtual service lookups | |
251 | */ | |
252 | #define IP_VS_SVC_TAB_BITS 8 | |
253 | #define IP_VS_SVC_TAB_SIZE (1 << IP_VS_SVC_TAB_BITS) | |
254 | #define IP_VS_SVC_TAB_MASK (IP_VS_SVC_TAB_SIZE - 1) | |
255 | ||
256 | /* the service table hashed by <protocol, addr, port> */ | |
ceec4c38 | 257 | static struct hlist_head ip_vs_svc_table[IP_VS_SVC_TAB_SIZE]; |
1da177e4 | 258 | /* the service table hashed by fwmark */ |
ceec4c38 | 259 | static struct hlist_head ip_vs_svc_fwm_table[IP_VS_SVC_TAB_SIZE]; |
1da177e4 | 260 | |
1da177e4 LT |
261 | |
262 | /* | |
263 | * Returns hash value for virtual service | |
264 | */ | |
95c96174 ED |
265 | static inline unsigned int |
266 | ip_vs_svc_hashkey(struct net *net, int af, unsigned int proto, | |
fc723250 | 267 | const union nf_inet_addr *addr, __be16 port) |
1da177e4 | 268 | { |
95c96174 | 269 | register unsigned int porth = ntohs(port); |
b18610de | 270 | __be32 addr_fold = addr->ip; |
e9836f24 | 271 | __u32 ahash; |
1da177e4 | 272 | |
b18610de JV |
273 | #ifdef CONFIG_IP_VS_IPV6 |
274 | if (af == AF_INET6) | |
275 | addr_fold = addr->ip6[0]^addr->ip6[1]^ | |
276 | addr->ip6[2]^addr->ip6[3]; | |
277 | #endif | |
e9836f24 JA |
278 | ahash = ntohl(addr_fold); |
279 | ahash ^= ((size_t) net >> 8); | |
b18610de | 280 | |
e9836f24 JA |
281 | return (proto ^ ahash ^ (porth >> IP_VS_SVC_TAB_BITS) ^ porth) & |
282 | IP_VS_SVC_TAB_MASK; | |
1da177e4 LT |
283 | } |
284 | ||
285 | /* | |
286 | * Returns hash value of fwmark for virtual service lookup | |
287 | */ | |
95c96174 | 288 | static inline unsigned int ip_vs_svc_fwm_hashkey(struct net *net, __u32 fwmark) |
1da177e4 | 289 | { |
fc723250 | 290 | return (((size_t)net>>8) ^ fwmark) & IP_VS_SVC_TAB_MASK; |
1da177e4 LT |
291 | } |
292 | ||
293 | /* | |
fc723250 | 294 | * Hashes a service in the ip_vs_svc_table by <netns,proto,addr,port> |
1da177e4 LT |
295 | * or in the ip_vs_svc_fwm_table by fwmark. |
296 | * Should be called with locked tables. | |
297 | */ | |
298 | static int ip_vs_svc_hash(struct ip_vs_service *svc) | |
299 | { | |
95c96174 | 300 | unsigned int hash; |
1da177e4 LT |
301 | |
302 | if (svc->flags & IP_VS_SVC_F_HASHED) { | |
1e3e238e HE |
303 | pr_err("%s(): request for already hashed, called from %pF\n", |
304 | __func__, __builtin_return_address(0)); | |
1da177e4 LT |
305 | return 0; |
306 | } | |
307 | ||
308 | if (svc->fwmark == 0) { | |
309 | /* | |
fc723250 | 310 | * Hash it by <netns,protocol,addr,port> in ip_vs_svc_table |
1da177e4 | 311 | */ |
fc723250 HS |
312 | hash = ip_vs_svc_hashkey(svc->net, svc->af, svc->protocol, |
313 | &svc->addr, svc->port); | |
ceec4c38 | 314 | hlist_add_head_rcu(&svc->s_list, &ip_vs_svc_table[hash]); |
1da177e4 LT |
315 | } else { |
316 | /* | |
fc723250 | 317 | * Hash it by fwmark in svc_fwm_table |
1da177e4 | 318 | */ |
fc723250 | 319 | hash = ip_vs_svc_fwm_hashkey(svc->net, svc->fwmark); |
ceec4c38 | 320 | hlist_add_head_rcu(&svc->f_list, &ip_vs_svc_fwm_table[hash]); |
1da177e4 LT |
321 | } |
322 | ||
323 | svc->flags |= IP_VS_SVC_F_HASHED; | |
324 | /* increase its refcnt because it is referenced by the svc table */ | |
325 | atomic_inc(&svc->refcnt); | |
326 | return 1; | |
327 | } | |
328 | ||
329 | ||
330 | /* | |
fc723250 | 331 | * Unhashes a service from svc_table / svc_fwm_table. |
1da177e4 LT |
332 | * Should be called with locked tables. |
333 | */ | |
334 | static int ip_vs_svc_unhash(struct ip_vs_service *svc) | |
335 | { | |
336 | if (!(svc->flags & IP_VS_SVC_F_HASHED)) { | |
1e3e238e HE |
337 | pr_err("%s(): request for unhash flagged, called from %pF\n", |
338 | __func__, __builtin_return_address(0)); | |
1da177e4 LT |
339 | return 0; |
340 | } | |
341 | ||
342 | if (svc->fwmark == 0) { | |
fc723250 | 343 | /* Remove it from the svc_table table */ |
ceec4c38 | 344 | hlist_del_rcu(&svc->s_list); |
1da177e4 | 345 | } else { |
fc723250 | 346 | /* Remove it from the svc_fwm_table table */ |
ceec4c38 | 347 | hlist_del_rcu(&svc->f_list); |
1da177e4 LT |
348 | } |
349 | ||
350 | svc->flags &= ~IP_VS_SVC_F_HASHED; | |
351 | atomic_dec(&svc->refcnt); | |
352 | return 1; | |
353 | } | |
354 | ||
355 | ||
356 | /* | |
fc723250 | 357 | * Get service by {netns, proto,addr,port} in the service table. |
1da177e4 | 358 | */ |
b18610de | 359 | static inline struct ip_vs_service * |
fc723250 HS |
360 | __ip_vs_service_find(struct net *net, int af, __u16 protocol, |
361 | const union nf_inet_addr *vaddr, __be16 vport) | |
1da177e4 | 362 | { |
95c96174 | 363 | unsigned int hash; |
1da177e4 LT |
364 | struct ip_vs_service *svc; |
365 | ||
366 | /* Check for "full" addressed entries */ | |
fc723250 | 367 | hash = ip_vs_svc_hashkey(net, af, protocol, vaddr, vport); |
1da177e4 | 368 | |
ceec4c38 | 369 | hlist_for_each_entry_rcu(svc, &ip_vs_svc_table[hash], s_list) { |
b18610de JV |
370 | if ((svc->af == af) |
371 | && ip_vs_addr_equal(af, &svc->addr, vaddr) | |
1da177e4 | 372 | && (svc->port == vport) |
fc723250 HS |
373 | && (svc->protocol == protocol) |
374 | && net_eq(svc->net, net)) { | |
1da177e4 | 375 | /* HIT */ |
1da177e4 LT |
376 | return svc; |
377 | } | |
378 | } | |
379 | ||
380 | return NULL; | |
381 | } | |
382 | ||
383 | ||
384 | /* | |
385 | * Get service by {fwmark} in the service table. | |
386 | */ | |
b18610de | 387 | static inline struct ip_vs_service * |
fc723250 | 388 | __ip_vs_svc_fwm_find(struct net *net, int af, __u32 fwmark) |
1da177e4 | 389 | { |
95c96174 | 390 | unsigned int hash; |
1da177e4 LT |
391 | struct ip_vs_service *svc; |
392 | ||
393 | /* Check for fwmark addressed entries */ | |
fc723250 | 394 | hash = ip_vs_svc_fwm_hashkey(net, fwmark); |
1da177e4 | 395 | |
ceec4c38 | 396 | hlist_for_each_entry_rcu(svc, &ip_vs_svc_fwm_table[hash], f_list) { |
fc723250 HS |
397 | if (svc->fwmark == fwmark && svc->af == af |
398 | && net_eq(svc->net, net)) { | |
1da177e4 | 399 | /* HIT */ |
1da177e4 LT |
400 | return svc; |
401 | } | |
402 | } | |
403 | ||
404 | return NULL; | |
405 | } | |
406 | ||
ceec4c38 | 407 | /* Find service, called under RCU lock */ |
1da177e4 | 408 | struct ip_vs_service * |
ceec4c38 JA |
409 | ip_vs_service_find(struct net *net, int af, __u32 fwmark, __u16 protocol, |
410 | const union nf_inet_addr *vaddr, __be16 vport) | |
1da177e4 LT |
411 | { |
412 | struct ip_vs_service *svc; | |
763f8d0e | 413 | struct netns_ipvs *ipvs = net_ipvs(net); |
3c2e0505 | 414 | |
1da177e4 LT |
415 | /* |
416 | * Check the table hashed by fwmark first | |
417 | */ | |
097fc76a JA |
418 | if (fwmark) { |
419 | svc = __ip_vs_svc_fwm_find(net, af, fwmark); | |
420 | if (svc) | |
421 | goto out; | |
422 | } | |
1da177e4 LT |
423 | |
424 | /* | |
425 | * Check the table hashed by <protocol,addr,port> | |
426 | * for "full" addressed entries | |
427 | */ | |
fc723250 | 428 | svc = __ip_vs_service_find(net, af, protocol, vaddr, vport); |
1da177e4 LT |
429 | |
430 | if (svc == NULL | |
431 | && protocol == IPPROTO_TCP | |
763f8d0e | 432 | && atomic_read(&ipvs->ftpsvc_counter) |
1da177e4 LT |
433 | && (vport == FTPDATA || ntohs(vport) >= PROT_SOCK)) { |
434 | /* | |
435 | * Check if ftp service entry exists, the packet | |
436 | * might belong to FTP data connections. | |
437 | */ | |
fc723250 | 438 | svc = __ip_vs_service_find(net, af, protocol, vaddr, FTPPORT); |
1da177e4 LT |
439 | } |
440 | ||
441 | if (svc == NULL | |
763f8d0e | 442 | && atomic_read(&ipvs->nullsvc_counter)) { |
1da177e4 LT |
443 | /* |
444 | * Check if the catch-all port (port zero) exists | |
445 | */ | |
fc723250 | 446 | svc = __ip_vs_service_find(net, af, protocol, vaddr, 0); |
1da177e4 LT |
447 | } |
448 | ||
449 | out: | |
3c2e0505 JV |
450 | IP_VS_DBG_BUF(9, "lookup service: fwm %u %s %s:%u %s\n", |
451 | fwmark, ip_vs_proto_name(protocol), | |
452 | IP_VS_DBG_ADDR(af, vaddr), ntohs(vport), | |
453 | svc ? "hit" : "not hit"); | |
1da177e4 LT |
454 | |
455 | return svc; | |
456 | } | |
457 | ||
458 | ||
459 | static inline void | |
460 | __ip_vs_bind_svc(struct ip_vs_dest *dest, struct ip_vs_service *svc) | |
461 | { | |
462 | atomic_inc(&svc->refcnt); | |
463 | dest->svc = svc; | |
464 | } | |
465 | ||
ceec4c38 JA |
466 | static void ip_vs_service_free(struct ip_vs_service *svc) |
467 | { | |
468 | if (svc->stats.cpustats) | |
469 | free_percpu(svc->stats.cpustats); | |
470 | kfree(svc); | |
471 | } | |
472 | ||
26c15cfd | 473 | static void |
1da177e4 LT |
474 | __ip_vs_unbind_svc(struct ip_vs_dest *dest) |
475 | { | |
476 | struct ip_vs_service *svc = dest->svc; | |
477 | ||
478 | dest->svc = NULL; | |
26c15cfd | 479 | if (atomic_dec_and_test(&svc->refcnt)) { |
ceec4c38 | 480 | IP_VS_DBG_BUF(3, "Removing service %u/%s:%u\n", |
26c15cfd JA |
481 | svc->fwmark, |
482 | IP_VS_DBG_ADDR(svc->af, &svc->addr), | |
ceec4c38 JA |
483 | ntohs(svc->port)); |
484 | ip_vs_service_free(svc); | |
26c15cfd | 485 | } |
1da177e4 LT |
486 | } |
487 | ||
488 | ||
489 | /* | |
490 | * Returns hash value for real service | |
491 | */ | |
95c96174 | 492 | static inline unsigned int ip_vs_rs_hashkey(int af, |
7937df15 JV |
493 | const union nf_inet_addr *addr, |
494 | __be16 port) | |
1da177e4 | 495 | { |
95c96174 | 496 | register unsigned int porth = ntohs(port); |
7937df15 JV |
497 | __be32 addr_fold = addr->ip; |
498 | ||
499 | #ifdef CONFIG_IP_VS_IPV6 | |
500 | if (af == AF_INET6) | |
501 | addr_fold = addr->ip6[0]^addr->ip6[1]^ | |
502 | addr->ip6[2]^addr->ip6[3]; | |
503 | #endif | |
1da177e4 | 504 | |
7937df15 | 505 | return (ntohl(addr_fold)^(porth>>IP_VS_RTAB_BITS)^porth) |
1da177e4 LT |
506 | & IP_VS_RTAB_MASK; |
507 | } | |
508 | ||
276472ea JA |
509 | /* Hash ip_vs_dest in rs_table by <proto,addr,port>. */ |
510 | static void ip_vs_rs_hash(struct netns_ipvs *ipvs, struct ip_vs_dest *dest) | |
1da177e4 | 511 | { |
95c96174 | 512 | unsigned int hash; |
1da177e4 | 513 | |
276472ea JA |
514 | if (dest->in_rs_table) |
515 | return; | |
1da177e4 LT |
516 | |
517 | /* | |
518 | * Hash by proto,addr,port, | |
519 | * which are the parameters of the real service. | |
520 | */ | |
7937df15 JV |
521 | hash = ip_vs_rs_hashkey(dest->af, &dest->addr, dest->port); |
522 | ||
276472ea JA |
523 | hlist_add_head_rcu(&dest->d_list, &ipvs->rs_table[hash]); |
524 | dest->in_rs_table = 1; | |
1da177e4 LT |
525 | } |
526 | ||
276472ea JA |
527 | /* Unhash ip_vs_dest from rs_table. */ |
528 | static void ip_vs_rs_unhash(struct ip_vs_dest *dest) | |
1da177e4 LT |
529 | { |
530 | /* | |
fc723250 | 531 | * Remove it from the rs_table table. |
1da177e4 | 532 | */ |
276472ea JA |
533 | if (dest->in_rs_table) { |
534 | hlist_del_rcu(&dest->d_list); | |
535 | dest->in_rs_table = 0; | |
1da177e4 | 536 | } |
1da177e4 LT |
537 | } |
538 | ||
276472ea JA |
539 | /* Check if real service by <proto,addr,port> is present */ |
540 | bool ip_vs_has_real_service(struct net *net, int af, __u16 protocol, | |
541 | const union nf_inet_addr *daddr, __be16 dport) | |
1da177e4 | 542 | { |
fc723250 | 543 | struct netns_ipvs *ipvs = net_ipvs(net); |
95c96174 | 544 | unsigned int hash; |
1da177e4 LT |
545 | struct ip_vs_dest *dest; |
546 | ||
276472ea | 547 | /* Check for "full" addressed entries */ |
7937df15 | 548 | hash = ip_vs_rs_hashkey(af, daddr, dport); |
1da177e4 | 549 | |
276472ea JA |
550 | rcu_read_lock(); |
551 | hlist_for_each_entry_rcu(dest, &ipvs->rs_table[hash], d_list) { | |
552 | if (dest->port == dport && | |
553 | dest->af == af && | |
554 | ip_vs_addr_equal(af, &dest->addr, daddr) && | |
555 | (dest->protocol == protocol || dest->vfwmark)) { | |
1da177e4 | 556 | /* HIT */ |
276472ea JA |
557 | rcu_read_unlock(); |
558 | return true; | |
1da177e4 LT |
559 | } |
560 | } | |
276472ea | 561 | rcu_read_unlock(); |
1da177e4 | 562 | |
276472ea | 563 | return false; |
1da177e4 LT |
564 | } |
565 | ||
413c2d04 JA |
566 | /* Lookup destination by {addr,port} in the given service |
567 | * Called under RCU lock. | |
1da177e4 LT |
568 | */ |
569 | static struct ip_vs_dest * | |
7937df15 JV |
570 | ip_vs_lookup_dest(struct ip_vs_service *svc, const union nf_inet_addr *daddr, |
571 | __be16 dport) | |
1da177e4 LT |
572 | { |
573 | struct ip_vs_dest *dest; | |
574 | ||
575 | /* | |
576 | * Find the destination for the given service | |
577 | */ | |
413c2d04 | 578 | list_for_each_entry_rcu(dest, &svc->destinations, n_list) { |
7937df15 JV |
579 | if ((dest->af == svc->af) |
580 | && ip_vs_addr_equal(svc->af, &dest->addr, daddr) | |
581 | && (dest->port == dport)) { | |
1da177e4 LT |
582 | /* HIT */ |
583 | return dest; | |
584 | } | |
585 | } | |
586 | ||
587 | return NULL; | |
588 | } | |
589 | ||
1e356f9c RB |
590 | /* |
591 | * Find destination by {daddr,dport,vaddr,protocol} | |
413c2d04 | 592 | * Created to be used in ip_vs_process_message() in |
1e356f9c RB |
593 | * the backup synchronization daemon. It finds the |
594 | * destination to be bound to the received connection | |
595 | * on the backup. | |
413c2d04 | 596 | * Called under RCU lock, no refcnt is returned. |
1e356f9c | 597 | */ |
fc723250 HS |
598 | struct ip_vs_dest *ip_vs_find_dest(struct net *net, int af, |
599 | const union nf_inet_addr *daddr, | |
7937df15 JV |
600 | __be16 dport, |
601 | const union nf_inet_addr *vaddr, | |
52793dbe JA |
602 | __be16 vport, __u16 protocol, __u32 fwmark, |
603 | __u32 flags) | |
1e356f9c RB |
604 | { |
605 | struct ip_vs_dest *dest; | |
606 | struct ip_vs_service *svc; | |
52793dbe | 607 | __be16 port = dport; |
1e356f9c | 608 | |
ceec4c38 | 609 | svc = ip_vs_service_find(net, af, fwmark, protocol, vaddr, vport); |
1e356f9c RB |
610 | if (!svc) |
611 | return NULL; | |
52793dbe JA |
612 | if (fwmark && (flags & IP_VS_CONN_F_FWD_MASK) != IP_VS_CONN_F_MASQ) |
613 | port = 0; | |
614 | dest = ip_vs_lookup_dest(svc, daddr, port); | |
615 | if (!dest) | |
616 | dest = ip_vs_lookup_dest(svc, daddr, port ^ dport); | |
1e356f9c RB |
617 | return dest; |
618 | } | |
1da177e4 | 619 | |
026ace06 JA |
620 | void ip_vs_dest_dst_rcu_free(struct rcu_head *head) |
621 | { | |
622 | struct ip_vs_dest_dst *dest_dst = container_of(head, | |
623 | struct ip_vs_dest_dst, | |
624 | rcu_head); | |
625 | ||
626 | dst_release(dest_dst->dst_cache); | |
627 | kfree(dest_dst); | |
628 | } | |
629 | ||
630 | /* Release dest_dst and dst_cache for dest in user context */ | |
d1deae4d JA |
631 | static void __ip_vs_dst_cache_reset(struct ip_vs_dest *dest) |
632 | { | |
026ace06 | 633 | struct ip_vs_dest_dst *old; |
d1deae4d | 634 | |
026ace06 JA |
635 | old = rcu_dereference_protected(dest->dest_dst, 1); |
636 | if (old) { | |
637 | RCU_INIT_POINTER(dest->dest_dst, NULL); | |
638 | call_rcu(&old->rcu_head, ip_vs_dest_dst_rcu_free); | |
639 | } | |
d1deae4d JA |
640 | } |
641 | ||
1da177e4 LT |
642 | /* |
643 | * Lookup dest by {svc,addr,port} in the destination trash. | |
644 | * The destination trash is used to hold the destinations that are removed | |
645 | * from the service table but are still referenced by some conn entries. | |
646 | * The reason to add the destination trash is when the dest is temporary | |
647 | * down (either by administrator or by monitor program), the dest can be | |
648 | * picked back from the trash, the remaining connections to the dest can | |
649 | * continue, and the counting information of the dest is also useful for | |
650 | * scheduling. | |
651 | */ | |
652 | static struct ip_vs_dest * | |
7937df15 JV |
653 | ip_vs_trash_get_dest(struct ip_vs_service *svc, const union nf_inet_addr *daddr, |
654 | __be16 dport) | |
1da177e4 | 655 | { |
578bc3ef | 656 | struct ip_vs_dest *dest; |
f2431e6e | 657 | struct netns_ipvs *ipvs = net_ipvs(svc->net); |
1da177e4 LT |
658 | |
659 | /* | |
660 | * Find the destination in trash | |
661 | */ | |
578bc3ef JA |
662 | spin_lock_bh(&ipvs->dest_trash_lock); |
663 | list_for_each_entry(dest, &ipvs->dest_trash, t_list) { | |
7937df15 JV |
664 | IP_VS_DBG_BUF(3, "Destination %u/%s:%u still in trash, " |
665 | "dest->refcnt=%d\n", | |
666 | dest->vfwmark, | |
667 | IP_VS_DBG_ADDR(svc->af, &dest->addr), | |
668 | ntohs(dest->port), | |
669 | atomic_read(&dest->refcnt)); | |
578bc3ef JA |
670 | /* We can not reuse dest while in grace period |
671 | * because conns still can use dest->svc | |
672 | */ | |
673 | if (test_bit(IP_VS_DEST_STATE_REMOVING, &dest->state)) | |
674 | continue; | |
7937df15 JV |
675 | if (dest->af == svc->af && |
676 | ip_vs_addr_equal(svc->af, &dest->addr, daddr) && | |
1da177e4 LT |
677 | dest->port == dport && |
678 | dest->vfwmark == svc->fwmark && | |
679 | dest->protocol == svc->protocol && | |
680 | (svc->fwmark || | |
7937df15 | 681 | (ip_vs_addr_equal(svc->af, &dest->vaddr, &svc->addr) && |
1da177e4 LT |
682 | dest->vport == svc->port))) { |
683 | /* HIT */ | |
578bc3ef JA |
684 | list_del(&dest->t_list); |
685 | ip_vs_dest_hold(dest); | |
686 | goto out; | |
1da177e4 LT |
687 | } |
688 | } | |
689 | ||
578bc3ef JA |
690 | dest = NULL; |
691 | ||
692 | out: | |
693 | spin_unlock_bh(&ipvs->dest_trash_lock); | |
694 | ||
695 | return dest; | |
1da177e4 LT |
696 | } |
697 | ||
578bc3ef JA |
698 | static void ip_vs_dest_free(struct ip_vs_dest *dest) |
699 | { | |
700 | __ip_vs_dst_cache_reset(dest); | |
701 | __ip_vs_unbind_svc(dest); | |
702 | free_percpu(dest->stats.cpustats); | |
703 | kfree(dest); | |
704 | } | |
1da177e4 LT |
705 | |
706 | /* | |
707 | * Clean up all the destinations in the trash | |
708 | * Called by the ip_vs_control_cleanup() | |
709 | * | |
710 | * When the ip_vs_control_clearup is activated by ipvs module exit, | |
711 | * the service tables must have been flushed and all the connections | |
712 | * are expired, and the refcnt of each destination in the trash must | |
578bc3ef | 713 | * be 0, so we simply release them here. |
1da177e4 | 714 | */ |
f2431e6e | 715 | static void ip_vs_trash_cleanup(struct net *net) |
1da177e4 LT |
716 | { |
717 | struct ip_vs_dest *dest, *nxt; | |
f2431e6e | 718 | struct netns_ipvs *ipvs = net_ipvs(net); |
1da177e4 | 719 | |
578bc3ef JA |
720 | del_timer_sync(&ipvs->dest_trash_timer); |
721 | /* No need to use dest_trash_lock */ | |
722 | list_for_each_entry_safe(dest, nxt, &ipvs->dest_trash, t_list) { | |
723 | list_del(&dest->t_list); | |
724 | ip_vs_dest_free(dest); | |
1da177e4 LT |
725 | } |
726 | } | |
727 | ||
55a3d4e1 JA |
728 | static void |
729 | ip_vs_copy_stats(struct ip_vs_stats_user *dst, struct ip_vs_stats *src) | |
730 | { | |
731 | #define IP_VS_SHOW_STATS_COUNTER(c) dst->c = src->ustats.c - src->ustats0.c | |
55a3d4e1 JA |
732 | |
733 | spin_lock_bh(&src->lock); | |
734 | ||
735 | IP_VS_SHOW_STATS_COUNTER(conns); | |
736 | IP_VS_SHOW_STATS_COUNTER(inpkts); | |
737 | IP_VS_SHOW_STATS_COUNTER(outpkts); | |
738 | IP_VS_SHOW_STATS_COUNTER(inbytes); | |
739 | IP_VS_SHOW_STATS_COUNTER(outbytes); | |
740 | ||
ea9f22cc | 741 | ip_vs_read_estimator(dst, src); |
55a3d4e1 JA |
742 | |
743 | spin_unlock_bh(&src->lock); | |
744 | } | |
1da177e4 LT |
745 | |
746 | static void | |
747 | ip_vs_zero_stats(struct ip_vs_stats *stats) | |
748 | { | |
749 | spin_lock_bh(&stats->lock); | |
e93615d0 | 750 | |
55a3d4e1 JA |
751 | /* get current counters as zero point, rates are zeroed */ |
752 | ||
753 | #define IP_VS_ZERO_STATS_COUNTER(c) stats->ustats0.c = stats->ustats.c | |
55a3d4e1 JA |
754 | |
755 | IP_VS_ZERO_STATS_COUNTER(conns); | |
756 | IP_VS_ZERO_STATS_COUNTER(inpkts); | |
757 | IP_VS_ZERO_STATS_COUNTER(outpkts); | |
758 | IP_VS_ZERO_STATS_COUNTER(inbytes); | |
759 | IP_VS_ZERO_STATS_COUNTER(outbytes); | |
760 | ||
1da177e4 | 761 | ip_vs_zero_estimator(stats); |
e93615d0 | 762 | |
3a14a313 | 763 | spin_unlock_bh(&stats->lock); |
1da177e4 LT |
764 | } |
765 | ||
766 | /* | |
767 | * Update a destination in the given service | |
768 | */ | |
769 | static void | |
26c15cfd JA |
770 | __ip_vs_update_dest(struct ip_vs_service *svc, struct ip_vs_dest *dest, |
771 | struct ip_vs_dest_user_kern *udest, int add) | |
1da177e4 | 772 | { |
fc723250 | 773 | struct netns_ipvs *ipvs = net_ipvs(svc->net); |
ceec4c38 | 774 | struct ip_vs_scheduler *sched; |
1da177e4 LT |
775 | int conn_flags; |
776 | ||
777 | /* set the weight and the flags */ | |
778 | atomic_set(&dest->weight, udest->weight); | |
3575792e JA |
779 | conn_flags = udest->conn_flags & IP_VS_CONN_F_DEST_MASK; |
780 | conn_flags |= IP_VS_CONN_F_INACTIVE; | |
1da177e4 | 781 | |
1da177e4 | 782 | /* set the IP_VS_CONN_F_NOOUTPUT flag if not masquerading/NAT */ |
3575792e | 783 | if ((conn_flags & IP_VS_CONN_F_FWD_MASK) != IP_VS_CONN_F_MASQ) { |
1da177e4 LT |
784 | conn_flags |= IP_VS_CONN_F_NOOUTPUT; |
785 | } else { | |
786 | /* | |
fc723250 | 787 | * Put the real service in rs_table if not present. |
1da177e4 LT |
788 | * For now only for NAT! |
789 | */ | |
fc723250 | 790 | ip_vs_rs_hash(ipvs, dest); |
1da177e4 LT |
791 | } |
792 | atomic_set(&dest->conn_flags, conn_flags); | |
793 | ||
794 | /* bind the service */ | |
795 | if (!dest->svc) { | |
796 | __ip_vs_bind_svc(dest, svc); | |
797 | } else { | |
798 | if (dest->svc != svc) { | |
799 | __ip_vs_unbind_svc(dest); | |
800 | ip_vs_zero_stats(&dest->stats); | |
801 | __ip_vs_bind_svc(dest, svc); | |
802 | } | |
803 | } | |
804 | ||
805 | /* set the dest status flags */ | |
806 | dest->flags |= IP_VS_DEST_F_AVAILABLE; | |
807 | ||
808 | if (udest->u_threshold == 0 || udest->u_threshold > dest->u_threshold) | |
809 | dest->flags &= ~IP_VS_DEST_F_OVERLOAD; | |
810 | dest->u_threshold = udest->u_threshold; | |
811 | dest->l_threshold = udest->l_threshold; | |
26c15cfd | 812 | |
ff75f40f | 813 | spin_lock_bh(&dest->dst_lock); |
d1deae4d | 814 | __ip_vs_dst_cache_reset(dest); |
ff75f40f | 815 | spin_unlock_bh(&dest->dst_lock); |
fc604767 | 816 | |
ceec4c38 | 817 | sched = rcu_dereference_protected(svc->scheduler, 1); |
26c15cfd | 818 | if (add) { |
ceec4c38 | 819 | ip_vs_start_estimator(svc->net, &dest->stats); |
413c2d04 | 820 | list_add_rcu(&dest->n_list, &svc->destinations); |
26c15cfd | 821 | svc->num_dests++; |
ceec4c38 JA |
822 | if (sched->add_dest) |
823 | sched->add_dest(svc, dest); | |
6b6df466 | 824 | } else { |
ceec4c38 JA |
825 | if (sched->upd_dest) |
826 | sched->upd_dest(svc, dest); | |
26c15cfd | 827 | } |
1da177e4 LT |
828 | } |
829 | ||
830 | ||
831 | /* | |
832 | * Create a destination for the given service | |
833 | */ | |
834 | static int | |
c860c6b1 | 835 | ip_vs_new_dest(struct ip_vs_service *svc, struct ip_vs_dest_user_kern *udest, |
1da177e4 LT |
836 | struct ip_vs_dest **dest_p) |
837 | { | |
838 | struct ip_vs_dest *dest; | |
95c96174 | 839 | unsigned int atype; |
1da177e4 LT |
840 | |
841 | EnterFunction(2); | |
842 | ||
09571c7a VB |
843 | #ifdef CONFIG_IP_VS_IPV6 |
844 | if (svc->af == AF_INET6) { | |
845 | atype = ipv6_addr_type(&udest->addr.in6); | |
3bfb92f4 SW |
846 | if ((!(atype & IPV6_ADDR_UNICAST) || |
847 | atype & IPV6_ADDR_LINKLOCAL) && | |
4a98480b | 848 | !__ip_vs_addr_is_local_v6(svc->net, &udest->addr.in6)) |
09571c7a VB |
849 | return -EINVAL; |
850 | } else | |
851 | #endif | |
852 | { | |
4a98480b | 853 | atype = inet_addr_type(svc->net, udest->addr.ip); |
09571c7a VB |
854 | if (atype != RTN_LOCAL && atype != RTN_UNICAST) |
855 | return -EINVAL; | |
856 | } | |
1da177e4 | 857 | |
dee06e47 | 858 | dest = kzalloc(sizeof(struct ip_vs_dest), GFP_KERNEL); |
0a9ee813 | 859 | if (dest == NULL) |
1da177e4 | 860 | return -ENOMEM; |
0a9ee813 | 861 | |
b17fc996 | 862 | dest->stats.cpustats = alloc_percpu(struct ip_vs_cpu_stats); |
0a9ee813 | 863 | if (!dest->stats.cpustats) |
b17fc996 | 864 | goto err_alloc; |
1da177e4 | 865 | |
c860c6b1 | 866 | dest->af = svc->af; |
1da177e4 | 867 | dest->protocol = svc->protocol; |
c860c6b1 | 868 | dest->vaddr = svc->addr; |
1da177e4 LT |
869 | dest->vport = svc->port; |
870 | dest->vfwmark = svc->fwmark; | |
c860c6b1 | 871 | ip_vs_addr_copy(svc->af, &dest->addr, &udest->addr); |
1da177e4 LT |
872 | dest->port = udest->port; |
873 | ||
874 | atomic_set(&dest->activeconns, 0); | |
875 | atomic_set(&dest->inactconns, 0); | |
876 | atomic_set(&dest->persistconns, 0); | |
26c15cfd | 877 | atomic_set(&dest->refcnt, 1); |
1da177e4 | 878 | |
276472ea | 879 | INIT_HLIST_NODE(&dest->d_list); |
1da177e4 LT |
880 | spin_lock_init(&dest->dst_lock); |
881 | spin_lock_init(&dest->stats.lock); | |
26c15cfd | 882 | __ip_vs_update_dest(svc, dest, udest, 1); |
1da177e4 LT |
883 | |
884 | *dest_p = dest; | |
885 | ||
886 | LeaveFunction(2); | |
887 | return 0; | |
b17fc996 HS |
888 | |
889 | err_alloc: | |
890 | kfree(dest); | |
891 | return -ENOMEM; | |
1da177e4 LT |
892 | } |
893 | ||
894 | ||
895 | /* | |
896 | * Add a destination into an existing service | |
897 | */ | |
898 | static int | |
c860c6b1 | 899 | ip_vs_add_dest(struct ip_vs_service *svc, struct ip_vs_dest_user_kern *udest) |
1da177e4 LT |
900 | { |
901 | struct ip_vs_dest *dest; | |
c860c6b1 | 902 | union nf_inet_addr daddr; |
014d730d | 903 | __be16 dport = udest->port; |
1da177e4 LT |
904 | int ret; |
905 | ||
906 | EnterFunction(2); | |
907 | ||
908 | if (udest->weight < 0) { | |
1e3e238e | 909 | pr_err("%s(): server weight less than zero\n", __func__); |
1da177e4 LT |
910 | return -ERANGE; |
911 | } | |
912 | ||
913 | if (udest->l_threshold > udest->u_threshold) { | |
1e3e238e HE |
914 | pr_err("%s(): lower threshold is higher than upper threshold\n", |
915 | __func__); | |
1da177e4 LT |
916 | return -ERANGE; |
917 | } | |
918 | ||
c860c6b1 JV |
919 | ip_vs_addr_copy(svc->af, &daddr, &udest->addr); |
920 | ||
413c2d04 JA |
921 | /* We use function that requires RCU lock */ |
922 | rcu_read_lock(); | |
7937df15 | 923 | dest = ip_vs_lookup_dest(svc, &daddr, dport); |
413c2d04 | 924 | rcu_read_unlock(); |
7937df15 | 925 | |
1da177e4 | 926 | if (dest != NULL) { |
1e3e238e | 927 | IP_VS_DBG(1, "%s(): dest already exists\n", __func__); |
1da177e4 LT |
928 | return -EEXIST; |
929 | } | |
930 | ||
931 | /* | |
932 | * Check if the dest already exists in the trash and | |
933 | * is from the same service | |
934 | */ | |
7937df15 JV |
935 | dest = ip_vs_trash_get_dest(svc, &daddr, dport); |
936 | ||
1da177e4 | 937 | if (dest != NULL) { |
cfc78c5a JV |
938 | IP_VS_DBG_BUF(3, "Get destination %s:%u from trash, " |
939 | "dest->refcnt=%d, service %u/%s:%u\n", | |
940 | IP_VS_DBG_ADDR(svc->af, &daddr), ntohs(dport), | |
941 | atomic_read(&dest->refcnt), | |
942 | dest->vfwmark, | |
943 | IP_VS_DBG_ADDR(svc->af, &dest->vaddr), | |
944 | ntohs(dest->vport)); | |
945 | ||
26c15cfd JA |
946 | __ip_vs_update_dest(svc, dest, udest, 1); |
947 | ret = 0; | |
948 | } else { | |
1da177e4 | 949 | /* |
26c15cfd | 950 | * Allocate and initialize the dest structure |
1da177e4 | 951 | */ |
26c15cfd | 952 | ret = ip_vs_new_dest(svc, udest, &dest); |
1da177e4 | 953 | } |
1da177e4 LT |
954 | LeaveFunction(2); |
955 | ||
26c15cfd | 956 | return ret; |
1da177e4 LT |
957 | } |
958 | ||
959 | ||
960 | /* | |
961 | * Edit a destination in the given service | |
962 | */ | |
963 | static int | |
c860c6b1 | 964 | ip_vs_edit_dest(struct ip_vs_service *svc, struct ip_vs_dest_user_kern *udest) |
1da177e4 LT |
965 | { |
966 | struct ip_vs_dest *dest; | |
c860c6b1 | 967 | union nf_inet_addr daddr; |
014d730d | 968 | __be16 dport = udest->port; |
1da177e4 LT |
969 | |
970 | EnterFunction(2); | |
971 | ||
972 | if (udest->weight < 0) { | |
1e3e238e | 973 | pr_err("%s(): server weight less than zero\n", __func__); |
1da177e4 LT |
974 | return -ERANGE; |
975 | } | |
976 | ||
977 | if (udest->l_threshold > udest->u_threshold) { | |
1e3e238e HE |
978 | pr_err("%s(): lower threshold is higher than upper threshold\n", |
979 | __func__); | |
1da177e4 LT |
980 | return -ERANGE; |
981 | } | |
982 | ||
c860c6b1 JV |
983 | ip_vs_addr_copy(svc->af, &daddr, &udest->addr); |
984 | ||
413c2d04 JA |
985 | /* We use function that requires RCU lock */ |
986 | rcu_read_lock(); | |
7937df15 | 987 | dest = ip_vs_lookup_dest(svc, &daddr, dport); |
413c2d04 | 988 | rcu_read_unlock(); |
7937df15 | 989 | |
1da177e4 | 990 | if (dest == NULL) { |
1e3e238e | 991 | IP_VS_DBG(1, "%s(): dest doesn't exist\n", __func__); |
1da177e4 LT |
992 | return -ENOENT; |
993 | } | |
994 | ||
26c15cfd | 995 | __ip_vs_update_dest(svc, dest, udest, 0); |
1da177e4 LT |
996 | LeaveFunction(2); |
997 | ||
998 | return 0; | |
999 | } | |
1000 | ||
578bc3ef JA |
1001 | static void ip_vs_dest_wait_readers(struct rcu_head *head) |
1002 | { | |
1003 | struct ip_vs_dest *dest = container_of(head, struct ip_vs_dest, | |
1004 | rcu_head); | |
1005 | ||
1006 | /* End of grace period after unlinking */ | |
1007 | clear_bit(IP_VS_DEST_STATE_REMOVING, &dest->state); | |
1008 | } | |
1009 | ||
1da177e4 LT |
1010 | |
1011 | /* | |
1012 | * Delete a destination (must be already unlinked from the service) | |
1013 | */ | |
578bc3ef JA |
1014 | static void __ip_vs_del_dest(struct net *net, struct ip_vs_dest *dest, |
1015 | bool cleanup) | |
1da177e4 | 1016 | { |
a0840e2e HS |
1017 | struct netns_ipvs *ipvs = net_ipvs(net); |
1018 | ||
6ef757f9 | 1019 | ip_vs_stop_estimator(net, &dest->stats); |
1da177e4 LT |
1020 | |
1021 | /* | |
1022 | * Remove it from the d-linked list with the real services. | |
1023 | */ | |
1da177e4 | 1024 | ip_vs_rs_unhash(dest); |
1da177e4 | 1025 | |
578bc3ef JA |
1026 | if (!cleanup) { |
1027 | set_bit(IP_VS_DEST_STATE_REMOVING, &dest->state); | |
1028 | call_rcu(&dest->rcu_head, ip_vs_dest_wait_readers); | |
1da177e4 | 1029 | } |
578bc3ef JA |
1030 | |
1031 | spin_lock_bh(&ipvs->dest_trash_lock); | |
1032 | IP_VS_DBG_BUF(3, "Moving dest %s:%u into trash, dest->refcnt=%d\n", | |
1033 | IP_VS_DBG_ADDR(dest->af, &dest->addr), ntohs(dest->port), | |
1034 | atomic_read(&dest->refcnt)); | |
1035 | if (list_empty(&ipvs->dest_trash) && !cleanup) | |
1036 | mod_timer(&ipvs->dest_trash_timer, | |
1037 | jiffies + IP_VS_DEST_TRASH_PERIOD); | |
1038 | /* dest lives in trash without reference */ | |
1039 | list_add(&dest->t_list, &ipvs->dest_trash); | |
1040 | spin_unlock_bh(&ipvs->dest_trash_lock); | |
1041 | ip_vs_dest_put(dest); | |
1da177e4 LT |
1042 | } |
1043 | ||
1044 | ||
1045 | /* | |
1046 | * Unlink a destination from the given service | |
1047 | */ | |
1048 | static void __ip_vs_unlink_dest(struct ip_vs_service *svc, | |
1049 | struct ip_vs_dest *dest, | |
1050 | int svcupd) | |
1051 | { | |
1052 | dest->flags &= ~IP_VS_DEST_F_AVAILABLE; | |
1053 | ||
1054 | /* | |
1055 | * Remove it from the d-linked destination list. | |
1056 | */ | |
413c2d04 | 1057 | list_del_rcu(&dest->n_list); |
1da177e4 | 1058 | svc->num_dests--; |
82dfb6f3 | 1059 | |
ceec4c38 JA |
1060 | if (svcupd) { |
1061 | struct ip_vs_scheduler *sched; | |
6b6df466 | 1062 | |
ceec4c38 JA |
1063 | sched = rcu_dereference_protected(svc->scheduler, 1); |
1064 | if (sched->del_dest) | |
1065 | sched->del_dest(svc, dest); | |
1066 | } | |
1da177e4 LT |
1067 | } |
1068 | ||
1069 | ||
1070 | /* | |
1071 | * Delete a destination server in the given service | |
1072 | */ | |
1073 | static int | |
c860c6b1 | 1074 | ip_vs_del_dest(struct ip_vs_service *svc, struct ip_vs_dest_user_kern *udest) |
1da177e4 LT |
1075 | { |
1076 | struct ip_vs_dest *dest; | |
014d730d | 1077 | __be16 dport = udest->port; |
1da177e4 LT |
1078 | |
1079 | EnterFunction(2); | |
1080 | ||
413c2d04 JA |
1081 | /* We use function that requires RCU lock */ |
1082 | rcu_read_lock(); | |
7937df15 | 1083 | dest = ip_vs_lookup_dest(svc, &udest->addr, dport); |
413c2d04 | 1084 | rcu_read_unlock(); |
c860c6b1 | 1085 | |
1da177e4 | 1086 | if (dest == NULL) { |
1e3e238e | 1087 | IP_VS_DBG(1, "%s(): destination not found!\n", __func__); |
1da177e4 LT |
1088 | return -ENOENT; |
1089 | } | |
1090 | ||
1da177e4 LT |
1091 | /* |
1092 | * Unlink dest from the service | |
1093 | */ | |
1094 | __ip_vs_unlink_dest(svc, dest, 1); | |
1095 | ||
1da177e4 LT |
1096 | /* |
1097 | * Delete the destination | |
1098 | */ | |
578bc3ef | 1099 | __ip_vs_del_dest(svc->net, dest, false); |
1da177e4 LT |
1100 | |
1101 | LeaveFunction(2); | |
1102 | ||
1103 | return 0; | |
1104 | } | |
1105 | ||
578bc3ef JA |
1106 | static void ip_vs_dest_trash_expire(unsigned long data) |
1107 | { | |
1108 | struct net *net = (struct net *) data; | |
1109 | struct netns_ipvs *ipvs = net_ipvs(net); | |
1110 | struct ip_vs_dest *dest, *next; | |
1111 | ||
1112 | spin_lock(&ipvs->dest_trash_lock); | |
1113 | list_for_each_entry_safe(dest, next, &ipvs->dest_trash, t_list) { | |
1114 | /* Skip if dest is in grace period */ | |
1115 | if (test_bit(IP_VS_DEST_STATE_REMOVING, &dest->state)) | |
1116 | continue; | |
1117 | if (atomic_read(&dest->refcnt) > 0) | |
1118 | continue; | |
1119 | IP_VS_DBG_BUF(3, "Removing destination %u/%s:%u from trash\n", | |
1120 | dest->vfwmark, | |
1121 | IP_VS_DBG_ADDR(dest->svc->af, &dest->addr), | |
1122 | ntohs(dest->port)); | |
1123 | list_del(&dest->t_list); | |
1124 | ip_vs_dest_free(dest); | |
1125 | } | |
1126 | if (!list_empty(&ipvs->dest_trash)) | |
1127 | mod_timer(&ipvs->dest_trash_timer, | |
1128 | jiffies + IP_VS_DEST_TRASH_PERIOD); | |
1129 | spin_unlock(&ipvs->dest_trash_lock); | |
1130 | } | |
1da177e4 LT |
1131 | |
1132 | /* | |
1133 | * Add a service into the service hash table | |
1134 | */ | |
1135 | static int | |
fc723250 | 1136 | ip_vs_add_service(struct net *net, struct ip_vs_service_user_kern *u, |
c860c6b1 | 1137 | struct ip_vs_service **svc_p) |
1da177e4 LT |
1138 | { |
1139 | int ret = 0; | |
1140 | struct ip_vs_scheduler *sched = NULL; | |
0d1e71b0 | 1141 | struct ip_vs_pe *pe = NULL; |
1da177e4 | 1142 | struct ip_vs_service *svc = NULL; |
a0840e2e | 1143 | struct netns_ipvs *ipvs = net_ipvs(net); |
1da177e4 LT |
1144 | |
1145 | /* increase the module use count */ | |
1146 | ip_vs_use_count_inc(); | |
1147 | ||
1148 | /* Lookup the scheduler by 'u->sched_name' */ | |
1149 | sched = ip_vs_scheduler_get(u->sched_name); | |
1150 | if (sched == NULL) { | |
1e3e238e | 1151 | pr_info("Scheduler module ip_vs_%s not found\n", u->sched_name); |
1da177e4 | 1152 | ret = -ENOENT; |
6e08bfb8 | 1153 | goto out_err; |
1da177e4 LT |
1154 | } |
1155 | ||
0d1e71b0 | 1156 | if (u->pe_name && *u->pe_name) { |
e9e5eee8 | 1157 | pe = ip_vs_pe_getbyname(u->pe_name); |
0d1e71b0 SH |
1158 | if (pe == NULL) { |
1159 | pr_info("persistence engine module ip_vs_pe_%s " | |
1160 | "not found\n", u->pe_name); | |
1161 | ret = -ENOENT; | |
1162 | goto out_err; | |
1163 | } | |
1164 | } | |
1165 | ||
f94fd041 | 1166 | #ifdef CONFIG_IP_VS_IPV6 |
0a925864 JA |
1167 | if (u->af == AF_INET6) { |
1168 | __u32 plen = (__force __u32) u->netmask; | |
1169 | ||
1170 | if (plen < 1 || plen > 128) { | |
1171 | ret = -EINVAL; | |
1172 | goto out_err; | |
1173 | } | |
f94fd041 JV |
1174 | } |
1175 | #endif | |
1176 | ||
dee06e47 | 1177 | svc = kzalloc(sizeof(struct ip_vs_service), GFP_KERNEL); |
1da177e4 | 1178 | if (svc == NULL) { |
1e3e238e | 1179 | IP_VS_DBG(1, "%s(): no memory\n", __func__); |
1da177e4 LT |
1180 | ret = -ENOMEM; |
1181 | goto out_err; | |
1182 | } | |
b17fc996 | 1183 | svc->stats.cpustats = alloc_percpu(struct ip_vs_cpu_stats); |
0a54e939 JL |
1184 | if (!svc->stats.cpustats) { |
1185 | ret = -ENOMEM; | |
b17fc996 | 1186 | goto out_err; |
0a54e939 | 1187 | } |
1da177e4 LT |
1188 | |
1189 | /* I'm the first user of the service */ | |
1da177e4 LT |
1190 | atomic_set(&svc->refcnt, 0); |
1191 | ||
c860c6b1 | 1192 | svc->af = u->af; |
1da177e4 | 1193 | svc->protocol = u->protocol; |
c860c6b1 | 1194 | ip_vs_addr_copy(svc->af, &svc->addr, &u->addr); |
1da177e4 LT |
1195 | svc->port = u->port; |
1196 | svc->fwmark = u->fwmark; | |
1197 | svc->flags = u->flags; | |
1198 | svc->timeout = u->timeout * HZ; | |
1199 | svc->netmask = u->netmask; | |
fc723250 | 1200 | svc->net = net; |
1da177e4 LT |
1201 | |
1202 | INIT_LIST_HEAD(&svc->destinations); | |
ba3a3ce1 | 1203 | spin_lock_init(&svc->sched_lock); |
1da177e4 LT |
1204 | spin_lock_init(&svc->stats.lock); |
1205 | ||
1206 | /* Bind the scheduler */ | |
1207 | ret = ip_vs_bind_scheduler(svc, sched); | |
1208 | if (ret) | |
1209 | goto out_err; | |
1210 | sched = NULL; | |
1211 | ||
0d1e71b0 | 1212 | /* Bind the ct retriever */ |
ceec4c38 | 1213 | RCU_INIT_POINTER(svc->pe, pe); |
0d1e71b0 SH |
1214 | pe = NULL; |
1215 | ||
1da177e4 LT |
1216 | /* Update the virtual service counters */ |
1217 | if (svc->port == FTPPORT) | |
763f8d0e | 1218 | atomic_inc(&ipvs->ftpsvc_counter); |
1da177e4 | 1219 | else if (svc->port == 0) |
763f8d0e | 1220 | atomic_inc(&ipvs->nullsvc_counter); |
1da177e4 | 1221 | |
6ef757f9 | 1222 | ip_vs_start_estimator(net, &svc->stats); |
f94fd041 JV |
1223 | |
1224 | /* Count only IPv4 services for old get/setsockopt interface */ | |
1225 | if (svc->af == AF_INET) | |
a0840e2e | 1226 | ipvs->num_services++; |
1da177e4 LT |
1227 | |
1228 | /* Hash the service into the service table */ | |
1da177e4 | 1229 | ip_vs_svc_hash(svc); |
1da177e4 LT |
1230 | |
1231 | *svc_p = svc; | |
7a4f0761 HS |
1232 | /* Now there is a service - full throttle */ |
1233 | ipvs->enable = 1; | |
1da177e4 LT |
1234 | return 0; |
1235 | ||
b17fc996 | 1236 | |
6e08bfb8 | 1237 | out_err: |
1da177e4 | 1238 | if (svc != NULL) { |
ceec4c38 JA |
1239 | ip_vs_unbind_scheduler(svc, sched); |
1240 | ip_vs_service_free(svc); | |
1da177e4 LT |
1241 | } |
1242 | ip_vs_scheduler_put(sched); | |
0d1e71b0 | 1243 | ip_vs_pe_put(pe); |
1da177e4 | 1244 | |
1da177e4 LT |
1245 | /* decrease the module use count */ |
1246 | ip_vs_use_count_dec(); | |
1247 | ||
1248 | return ret; | |
1249 | } | |
1250 | ||
1251 | ||
1252 | /* | |
1253 | * Edit a service and bind it with a new scheduler | |
1254 | */ | |
1255 | static int | |
c860c6b1 | 1256 | ip_vs_edit_service(struct ip_vs_service *svc, struct ip_vs_service_user_kern *u) |
1da177e4 LT |
1257 | { |
1258 | struct ip_vs_scheduler *sched, *old_sched; | |
0d1e71b0 | 1259 | struct ip_vs_pe *pe = NULL, *old_pe = NULL; |
1da177e4 LT |
1260 | int ret = 0; |
1261 | ||
1262 | /* | |
1263 | * Lookup the scheduler, by 'u->sched_name' | |
1264 | */ | |
1265 | sched = ip_vs_scheduler_get(u->sched_name); | |
1266 | if (sched == NULL) { | |
1e3e238e | 1267 | pr_info("Scheduler module ip_vs_%s not found\n", u->sched_name); |
1da177e4 LT |
1268 | return -ENOENT; |
1269 | } | |
1270 | old_sched = sched; | |
1271 | ||
0d1e71b0 | 1272 | if (u->pe_name && *u->pe_name) { |
e9e5eee8 | 1273 | pe = ip_vs_pe_getbyname(u->pe_name); |
0d1e71b0 SH |
1274 | if (pe == NULL) { |
1275 | pr_info("persistence engine module ip_vs_pe_%s " | |
1276 | "not found\n", u->pe_name); | |
1277 | ret = -ENOENT; | |
1278 | goto out; | |
1279 | } | |
1280 | old_pe = pe; | |
1281 | } | |
1282 | ||
f94fd041 | 1283 | #ifdef CONFIG_IP_VS_IPV6 |
0a925864 JA |
1284 | if (u->af == AF_INET6) { |
1285 | __u32 plen = (__force __u32) u->netmask; | |
1286 | ||
1287 | if (plen < 1 || plen > 128) { | |
1288 | ret = -EINVAL; | |
1289 | goto out; | |
1290 | } | |
f94fd041 JV |
1291 | } |
1292 | #endif | |
1293 | ||
ceec4c38 JA |
1294 | old_sched = rcu_dereference_protected(svc->scheduler, 1); |
1295 | if (sched != old_sched) { | |
1296 | /* Bind the new scheduler */ | |
1297 | ret = ip_vs_bind_scheduler(svc, sched); | |
1298 | if (ret) { | |
1299 | old_sched = sched; | |
1300 | goto out; | |
1301 | } | |
1302 | /* Unbind the old scheduler on success */ | |
1303 | ip_vs_unbind_scheduler(svc, old_sched); | |
1304 | } | |
1da177e4 LT |
1305 | |
1306 | /* | |
1307 | * Set the flags and timeout value | |
1308 | */ | |
1309 | svc->flags = u->flags | IP_VS_SVC_F_HASHED; | |
1310 | svc->timeout = u->timeout * HZ; | |
1311 | svc->netmask = u->netmask; | |
1312 | ||
ceec4c38 JA |
1313 | old_pe = rcu_dereference_protected(svc->pe, 1); |
1314 | if (pe != old_pe) | |
1315 | rcu_assign_pointer(svc->pe, pe); | |
1da177e4 | 1316 | |
552ad65a | 1317 | out: |
6e08bfb8 | 1318 | ip_vs_scheduler_put(old_sched); |
0d1e71b0 | 1319 | ip_vs_pe_put(old_pe); |
1da177e4 LT |
1320 | return ret; |
1321 | } | |
1322 | ||
ceec4c38 JA |
1323 | static void ip_vs_service_rcu_free(struct rcu_head *head) |
1324 | { | |
1325 | struct ip_vs_service *svc; | |
1326 | ||
1327 | svc = container_of(head, struct ip_vs_service, rcu_head); | |
1328 | ip_vs_service_free(svc); | |
1329 | } | |
1da177e4 LT |
1330 | |
1331 | /* | |
1332 | * Delete a service from the service list | |
1333 | * - The service must be unlinked, unlocked and not referenced! | |
1334 | * - We are called under _bh lock | |
1335 | */ | |
578bc3ef | 1336 | static void __ip_vs_del_service(struct ip_vs_service *svc, bool cleanup) |
1da177e4 LT |
1337 | { |
1338 | struct ip_vs_dest *dest, *nxt; | |
1339 | struct ip_vs_scheduler *old_sched; | |
0d1e71b0 | 1340 | struct ip_vs_pe *old_pe; |
a0840e2e | 1341 | struct netns_ipvs *ipvs = net_ipvs(svc->net); |
0d1e71b0 SH |
1342 | |
1343 | pr_info("%s: enter\n", __func__); | |
1da177e4 | 1344 | |
f94fd041 JV |
1345 | /* Count only IPv4 services for old get/setsockopt interface */ |
1346 | if (svc->af == AF_INET) | |
a0840e2e | 1347 | ipvs->num_services--; |
f94fd041 | 1348 | |
6ef757f9 | 1349 | ip_vs_stop_estimator(svc->net, &svc->stats); |
1da177e4 LT |
1350 | |
1351 | /* Unbind scheduler */ | |
ceec4c38 JA |
1352 | old_sched = rcu_dereference_protected(svc->scheduler, 1); |
1353 | ip_vs_unbind_scheduler(svc, old_sched); | |
6e08bfb8 | 1354 | ip_vs_scheduler_put(old_sched); |
1da177e4 | 1355 | |
ceec4c38 JA |
1356 | /* Unbind persistence engine, keep svc->pe */ |
1357 | old_pe = rcu_dereference_protected(svc->pe, 1); | |
0d1e71b0 SH |
1358 | ip_vs_pe_put(old_pe); |
1359 | ||
1da177e4 LT |
1360 | /* |
1361 | * Unlink the whole destination list | |
1362 | */ | |
1363 | list_for_each_entry_safe(dest, nxt, &svc->destinations, n_list) { | |
1364 | __ip_vs_unlink_dest(svc, dest, 0); | |
578bc3ef | 1365 | __ip_vs_del_dest(svc->net, dest, cleanup); |
1da177e4 LT |
1366 | } |
1367 | ||
1368 | /* | |
1369 | * Update the virtual service counters | |
1370 | */ | |
1371 | if (svc->port == FTPPORT) | |
763f8d0e | 1372 | atomic_dec(&ipvs->ftpsvc_counter); |
1da177e4 | 1373 | else if (svc->port == 0) |
763f8d0e | 1374 | atomic_dec(&ipvs->nullsvc_counter); |
1da177e4 LT |
1375 | |
1376 | /* | |
1377 | * Free the service if nobody refers to it | |
1378 | */ | |
ceec4c38 JA |
1379 | if (atomic_dec_and_test(&svc->refcnt)) { |
1380 | IP_VS_DBG_BUF(3, "Removing service %u/%s:%u\n", | |
26c15cfd JA |
1381 | svc->fwmark, |
1382 | IP_VS_DBG_ADDR(svc->af, &svc->addr), | |
ceec4c38 JA |
1383 | ntohs(svc->port)); |
1384 | call_rcu(&svc->rcu_head, ip_vs_service_rcu_free); | |
26c15cfd | 1385 | } |
1da177e4 LT |
1386 | |
1387 | /* decrease the module use count */ | |
1388 | ip_vs_use_count_dec(); | |
1389 | } | |
1390 | ||
1391 | /* | |
26c15cfd | 1392 | * Unlink a service from list and try to delete it if its refcnt reached 0 |
1da177e4 | 1393 | */ |
578bc3ef | 1394 | static void ip_vs_unlink_service(struct ip_vs_service *svc, bool cleanup) |
1da177e4 | 1395 | { |
ceec4c38 JA |
1396 | /* Hold svc to avoid double release from dest_trash */ |
1397 | atomic_inc(&svc->refcnt); | |
1da177e4 LT |
1398 | /* |
1399 | * Unhash it from the service table | |
1400 | */ | |
1da177e4 LT |
1401 | ip_vs_svc_unhash(svc); |
1402 | ||
578bc3ef | 1403 | __ip_vs_del_service(svc, cleanup); |
26c15cfd JA |
1404 | } |
1405 | ||
1406 | /* | |
1407 | * Delete a service from the service list | |
1408 | */ | |
1409 | static int ip_vs_del_service(struct ip_vs_service *svc) | |
1410 | { | |
1411 | if (svc == NULL) | |
1412 | return -EEXIST; | |
578bc3ef | 1413 | ip_vs_unlink_service(svc, false); |
1da177e4 LT |
1414 | |
1415 | return 0; | |
1416 | } | |
1417 | ||
1418 | ||
1419 | /* | |
1420 | * Flush all the virtual services | |
1421 | */ | |
578bc3ef | 1422 | static int ip_vs_flush(struct net *net, bool cleanup) |
1da177e4 LT |
1423 | { |
1424 | int idx; | |
ceec4c38 JA |
1425 | struct ip_vs_service *svc; |
1426 | struct hlist_node *n; | |
1da177e4 LT |
1427 | |
1428 | /* | |
fc723250 | 1429 | * Flush the service table hashed by <netns,protocol,addr,port> |
1da177e4 LT |
1430 | */ |
1431 | for(idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { | |
ceec4c38 JA |
1432 | hlist_for_each_entry_safe(svc, n, &ip_vs_svc_table[idx], |
1433 | s_list) { | |
fc723250 | 1434 | if (net_eq(svc->net, net)) |
578bc3ef | 1435 | ip_vs_unlink_service(svc, cleanup); |
1da177e4 LT |
1436 | } |
1437 | } | |
1438 | ||
1439 | /* | |
1440 | * Flush the service table hashed by fwmark | |
1441 | */ | |
1442 | for(idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { | |
ceec4c38 JA |
1443 | hlist_for_each_entry_safe(svc, n, &ip_vs_svc_fwm_table[idx], |
1444 | f_list) { | |
fc723250 | 1445 | if (net_eq(svc->net, net)) |
578bc3ef | 1446 | ip_vs_unlink_service(svc, cleanup); |
1da177e4 LT |
1447 | } |
1448 | } | |
1449 | ||
1450 | return 0; | |
1451 | } | |
1452 | ||
7a4f0761 HS |
1453 | /* |
1454 | * Delete service by {netns} in the service table. | |
1455 | * Called by __ip_vs_cleanup() | |
1456 | */ | |
503cf15a | 1457 | void ip_vs_service_net_cleanup(struct net *net) |
7a4f0761 HS |
1458 | { |
1459 | EnterFunction(2); | |
1460 | /* Check for "full" addressed entries */ | |
1461 | mutex_lock(&__ip_vs_mutex); | |
578bc3ef | 1462 | ip_vs_flush(net, true); |
7a4f0761 HS |
1463 | mutex_unlock(&__ip_vs_mutex); |
1464 | LeaveFunction(2); | |
1465 | } | |
d1deae4d JA |
1466 | |
1467 | /* Put all references for device (dst_cache) */ | |
7a4f0761 | 1468 | static inline void |
d1deae4d | 1469 | ip_vs_forget_dev(struct ip_vs_dest *dest, struct net_device *dev) |
7a4f0761 | 1470 | { |
d717bb2a JA |
1471 | struct ip_vs_dest_dst *dest_dst; |
1472 | ||
7a4f0761 | 1473 | spin_lock_bh(&dest->dst_lock); |
d717bb2a JA |
1474 | dest_dst = rcu_dereference_protected(dest->dest_dst, 1); |
1475 | if (dest_dst && dest_dst->dst_cache->dev == dev) { | |
7a4f0761 HS |
1476 | IP_VS_DBG_BUF(3, "Reset dev:%s dest %s:%u ,dest->refcnt=%d\n", |
1477 | dev->name, | |
1478 | IP_VS_DBG_ADDR(dest->af, &dest->addr), | |
1479 | ntohs(dest->port), | |
1480 | atomic_read(&dest->refcnt)); | |
d1deae4d | 1481 | __ip_vs_dst_cache_reset(dest); |
7a4f0761 HS |
1482 | } |
1483 | spin_unlock_bh(&dest->dst_lock); | |
1484 | ||
1485 | } | |
313eae63 JA |
1486 | /* Netdev event receiver |
1487 | * Currently only NETDEV_DOWN is handled to release refs to cached dsts | |
7a4f0761 HS |
1488 | */ |
1489 | static int ip_vs_dst_event(struct notifier_block *this, unsigned long event, | |
1490 | void *ptr) | |
1491 | { | |
1492 | struct net_device *dev = ptr; | |
1493 | struct net *net = dev_net(dev); | |
283283c4 | 1494 | struct netns_ipvs *ipvs = net_ipvs(net); |
7a4f0761 HS |
1495 | struct ip_vs_service *svc; |
1496 | struct ip_vs_dest *dest; | |
1497 | unsigned int idx; | |
1498 | ||
313eae63 | 1499 | if (event != NETDEV_DOWN || !ipvs) |
7a4f0761 HS |
1500 | return NOTIFY_DONE; |
1501 | IP_VS_DBG(3, "%s() dev=%s\n", __func__, dev->name); | |
1502 | EnterFunction(2); | |
1503 | mutex_lock(&__ip_vs_mutex); | |
1504 | for (idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { | |
ceec4c38 | 1505 | hlist_for_each_entry(svc, &ip_vs_svc_table[idx], s_list) { |
7a4f0761 HS |
1506 | if (net_eq(svc->net, net)) { |
1507 | list_for_each_entry(dest, &svc->destinations, | |
1508 | n_list) { | |
d1deae4d | 1509 | ip_vs_forget_dev(dest, dev); |
7a4f0761 HS |
1510 | } |
1511 | } | |
1512 | } | |
1513 | ||
ceec4c38 | 1514 | hlist_for_each_entry(svc, &ip_vs_svc_fwm_table[idx], f_list) { |
7a4f0761 HS |
1515 | if (net_eq(svc->net, net)) { |
1516 | list_for_each_entry(dest, &svc->destinations, | |
1517 | n_list) { | |
d1deae4d | 1518 | ip_vs_forget_dev(dest, dev); |
7a4f0761 HS |
1519 | } |
1520 | } | |
1521 | ||
1522 | } | |
1523 | } | |
1524 | ||
578bc3ef JA |
1525 | spin_lock_bh(&ipvs->dest_trash_lock); |
1526 | list_for_each_entry(dest, &ipvs->dest_trash, t_list) { | |
d1deae4d | 1527 | ip_vs_forget_dev(dest, dev); |
7a4f0761 | 1528 | } |
578bc3ef | 1529 | spin_unlock_bh(&ipvs->dest_trash_lock); |
7a4f0761 HS |
1530 | mutex_unlock(&__ip_vs_mutex); |
1531 | LeaveFunction(2); | |
1532 | return NOTIFY_DONE; | |
1533 | } | |
1da177e4 LT |
1534 | |
1535 | /* | |
1536 | * Zero counters in a service or all services | |
1537 | */ | |
1538 | static int ip_vs_zero_service(struct ip_vs_service *svc) | |
1539 | { | |
1540 | struct ip_vs_dest *dest; | |
1541 | ||
1da177e4 LT |
1542 | list_for_each_entry(dest, &svc->destinations, n_list) { |
1543 | ip_vs_zero_stats(&dest->stats); | |
1544 | } | |
1545 | ip_vs_zero_stats(&svc->stats); | |
1da177e4 LT |
1546 | return 0; |
1547 | } | |
1548 | ||
fc723250 | 1549 | static int ip_vs_zero_all(struct net *net) |
1da177e4 LT |
1550 | { |
1551 | int idx; | |
1552 | struct ip_vs_service *svc; | |
1553 | ||
1554 | for(idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { | |
ceec4c38 | 1555 | hlist_for_each_entry(svc, &ip_vs_svc_table[idx], s_list) { |
fc723250 HS |
1556 | if (net_eq(svc->net, net)) |
1557 | ip_vs_zero_service(svc); | |
1da177e4 LT |
1558 | } |
1559 | } | |
1560 | ||
1561 | for(idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { | |
ceec4c38 | 1562 | hlist_for_each_entry(svc, &ip_vs_svc_fwm_table[idx], f_list) { |
fc723250 HS |
1563 | if (net_eq(svc->net, net)) |
1564 | ip_vs_zero_service(svc); | |
1da177e4 LT |
1565 | } |
1566 | } | |
1567 | ||
2a0751af | 1568 | ip_vs_zero_stats(&net_ipvs(net)->tot_stats); |
1da177e4 LT |
1569 | return 0; |
1570 | } | |
1571 | ||
14e40546 | 1572 | #ifdef CONFIG_SYSCTL |
749c42b6 JA |
1573 | |
1574 | static int zero; | |
1575 | static int three = 3; | |
1576 | ||
1da177e4 | 1577 | static int |
8d65af78 | 1578 | proc_do_defense_mode(ctl_table *table, int write, |
1da177e4 LT |
1579 | void __user *buffer, size_t *lenp, loff_t *ppos) |
1580 | { | |
9330419d | 1581 | struct net *net = current->nsproxy->net_ns; |
1da177e4 LT |
1582 | int *valp = table->data; |
1583 | int val = *valp; | |
1584 | int rc; | |
1585 | ||
8d65af78 | 1586 | rc = proc_dointvec(table, write, buffer, lenp, ppos); |
1da177e4 LT |
1587 | if (write && (*valp != val)) { |
1588 | if ((*valp < 0) || (*valp > 3)) { | |
1589 | /* Restore the correct value */ | |
1590 | *valp = val; | |
1591 | } else { | |
9330419d | 1592 | update_defense_level(net_ipvs(net)); |
1da177e4 LT |
1593 | } |
1594 | } | |
1595 | return rc; | |
1596 | } | |
1597 | ||
1da177e4 | 1598 | static int |
8d65af78 | 1599 | proc_do_sync_threshold(ctl_table *table, int write, |
1da177e4 LT |
1600 | void __user *buffer, size_t *lenp, loff_t *ppos) |
1601 | { | |
1602 | int *valp = table->data; | |
1603 | int val[2]; | |
1604 | int rc; | |
1605 | ||
1606 | /* backup the value first */ | |
1607 | memcpy(val, valp, sizeof(val)); | |
1608 | ||
8d65af78 | 1609 | rc = proc_dointvec(table, write, buffer, lenp, ppos); |
749c42b6 JA |
1610 | if (write && (valp[0] < 0 || valp[1] < 0 || |
1611 | (valp[0] >= valp[1] && valp[1]))) { | |
1da177e4 LT |
1612 | /* Restore the correct value */ |
1613 | memcpy(valp, val, sizeof(val)); | |
1614 | } | |
1615 | return rc; | |
1616 | } | |
1617 | ||
b880c1f0 HS |
1618 | static int |
1619 | proc_do_sync_mode(ctl_table *table, int write, | |
1620 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
1621 | { | |
1622 | int *valp = table->data; | |
1623 | int val = *valp; | |
1624 | int rc; | |
1625 | ||
1626 | rc = proc_dointvec(table, write, buffer, lenp, ppos); | |
1627 | if (write && (*valp != val)) { | |
1628 | if ((*valp < 0) || (*valp > 1)) { | |
1629 | /* Restore the correct value */ | |
1630 | *valp = val; | |
f73181c8 PNA |
1631 | } |
1632 | } | |
1633 | return rc; | |
1634 | } | |
1635 | ||
1636 | static int | |
1637 | proc_do_sync_ports(ctl_table *table, int write, | |
1638 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
1639 | { | |
1640 | int *valp = table->data; | |
1641 | int val = *valp; | |
1642 | int rc; | |
1643 | ||
1644 | rc = proc_dointvec(table, write, buffer, lenp, ppos); | |
1645 | if (write && (*valp != val)) { | |
1646 | if (*valp < 1 || !is_power_of_2(*valp)) { | |
1647 | /* Restore the correct value */ | |
1648 | *valp = val; | |
b880c1f0 HS |
1649 | } |
1650 | } | |
1651 | return rc; | |
1652 | } | |
1da177e4 LT |
1653 | |
1654 | /* | |
1655 | * IPVS sysctl table (under the /proc/sys/net/ipv4/vs/) | |
a0840e2e | 1656 | * Do not change order or insert new entries without |
503cf15a | 1657 | * align with netns init in ip_vs_control_net_init() |
1da177e4 LT |
1658 | */ |
1659 | ||
1660 | static struct ctl_table vs_vars[] = { | |
1661 | { | |
1da177e4 | 1662 | .procname = "amemthresh", |
1da177e4 LT |
1663 | .maxlen = sizeof(int), |
1664 | .mode = 0644, | |
6d9f239a | 1665 | .proc_handler = proc_dointvec, |
1da177e4 | 1666 | }, |
1da177e4 | 1667 | { |
1da177e4 | 1668 | .procname = "am_droprate", |
1da177e4 LT |
1669 | .maxlen = sizeof(int), |
1670 | .mode = 0644, | |
6d9f239a | 1671 | .proc_handler = proc_dointvec, |
1da177e4 LT |
1672 | }, |
1673 | { | |
1da177e4 | 1674 | .procname = "drop_entry", |
1da177e4 LT |
1675 | .maxlen = sizeof(int), |
1676 | .mode = 0644, | |
6d9f239a | 1677 | .proc_handler = proc_do_defense_mode, |
1da177e4 LT |
1678 | }, |
1679 | { | |
1da177e4 | 1680 | .procname = "drop_packet", |
1da177e4 LT |
1681 | .maxlen = sizeof(int), |
1682 | .mode = 0644, | |
6d9f239a | 1683 | .proc_handler = proc_do_defense_mode, |
1da177e4 | 1684 | }, |
f4bc17cd JA |
1685 | #ifdef CONFIG_IP_VS_NFCT |
1686 | { | |
1687 | .procname = "conntrack", | |
f4bc17cd JA |
1688 | .maxlen = sizeof(int), |
1689 | .mode = 0644, | |
1690 | .proc_handler = &proc_dointvec, | |
1691 | }, | |
1692 | #endif | |
1da177e4 | 1693 | { |
1da177e4 | 1694 | .procname = "secure_tcp", |
1da177e4 LT |
1695 | .maxlen = sizeof(int), |
1696 | .mode = 0644, | |
6d9f239a | 1697 | .proc_handler = proc_do_defense_mode, |
1da177e4 | 1698 | }, |
8a803040 JA |
1699 | { |
1700 | .procname = "snat_reroute", | |
8a803040 JA |
1701 | .maxlen = sizeof(int), |
1702 | .mode = 0644, | |
1703 | .proc_handler = &proc_dointvec, | |
1704 | }, | |
b880c1f0 HS |
1705 | { |
1706 | .procname = "sync_version", | |
b880c1f0 HS |
1707 | .maxlen = sizeof(int), |
1708 | .mode = 0644, | |
1709 | .proc_handler = &proc_do_sync_mode, | |
1710 | }, | |
f73181c8 PNA |
1711 | { |
1712 | .procname = "sync_ports", | |
1713 | .maxlen = sizeof(int), | |
1714 | .mode = 0644, | |
1715 | .proc_handler = &proc_do_sync_ports, | |
1716 | }, | |
1c003b15 PNA |
1717 | { |
1718 | .procname = "sync_qlen_max", | |
1719 | .maxlen = sizeof(int), | |
1720 | .mode = 0644, | |
1721 | .proc_handler = proc_dointvec, | |
1722 | }, | |
1723 | { | |
1724 | .procname = "sync_sock_size", | |
1725 | .maxlen = sizeof(int), | |
1726 | .mode = 0644, | |
1727 | .proc_handler = proc_dointvec, | |
1728 | }, | |
a0840e2e HS |
1729 | { |
1730 | .procname = "cache_bypass", | |
1731 | .maxlen = sizeof(int), | |
1732 | .mode = 0644, | |
1733 | .proc_handler = proc_dointvec, | |
1734 | }, | |
1735 | { | |
1736 | .procname = "expire_nodest_conn", | |
1737 | .maxlen = sizeof(int), | |
1738 | .mode = 0644, | |
1739 | .proc_handler = proc_dointvec, | |
1740 | }, | |
1741 | { | |
1742 | .procname = "expire_quiescent_template", | |
1743 | .maxlen = sizeof(int), | |
1744 | .mode = 0644, | |
1745 | .proc_handler = proc_dointvec, | |
1746 | }, | |
1747 | { | |
1748 | .procname = "sync_threshold", | |
1749 | .maxlen = | |
1750 | sizeof(((struct netns_ipvs *)0)->sysctl_sync_threshold), | |
1751 | .mode = 0644, | |
1752 | .proc_handler = proc_do_sync_threshold, | |
1753 | }, | |
749c42b6 JA |
1754 | { |
1755 | .procname = "sync_refresh_period", | |
1756 | .maxlen = sizeof(int), | |
1757 | .mode = 0644, | |
1758 | .proc_handler = proc_dointvec_jiffies, | |
1759 | }, | |
1760 | { | |
1761 | .procname = "sync_retries", | |
1762 | .maxlen = sizeof(int), | |
1763 | .mode = 0644, | |
1764 | .proc_handler = proc_dointvec_minmax, | |
1765 | .extra1 = &zero, | |
1766 | .extra2 = &three, | |
1767 | }, | |
a0840e2e HS |
1768 | { |
1769 | .procname = "nat_icmp_send", | |
1770 | .maxlen = sizeof(int), | |
1771 | .mode = 0644, | |
1772 | .proc_handler = proc_dointvec, | |
1773 | }, | |
3654e611 JA |
1774 | { |
1775 | .procname = "pmtu_disc", | |
1776 | .maxlen = sizeof(int), | |
1777 | .mode = 0644, | |
1778 | .proc_handler = proc_dointvec, | |
1779 | }, | |
0c12582f JA |
1780 | { |
1781 | .procname = "backup_only", | |
1782 | .maxlen = sizeof(int), | |
1783 | .mode = 0644, | |
1784 | .proc_handler = proc_dointvec, | |
1785 | }, | |
a0840e2e HS |
1786 | #ifdef CONFIG_IP_VS_DEBUG |
1787 | { | |
1788 | .procname = "debug_level", | |
1789 | .data = &sysctl_ip_vs_debug_level, | |
1790 | .maxlen = sizeof(int), | |
1791 | .mode = 0644, | |
1792 | .proc_handler = proc_dointvec, | |
1793 | }, | |
1794 | #endif | |
1da177e4 LT |
1795 | #if 0 |
1796 | { | |
1da177e4 LT |
1797 | .procname = "timeout_established", |
1798 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_ESTABLISHED], | |
1799 | .maxlen = sizeof(int), | |
1800 | .mode = 0644, | |
6d9f239a | 1801 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1802 | }, |
1803 | { | |
1da177e4 LT |
1804 | .procname = "timeout_synsent", |
1805 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_SYN_SENT], | |
1806 | .maxlen = sizeof(int), | |
1807 | .mode = 0644, | |
6d9f239a | 1808 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1809 | }, |
1810 | { | |
1da177e4 LT |
1811 | .procname = "timeout_synrecv", |
1812 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_SYN_RECV], | |
1813 | .maxlen = sizeof(int), | |
1814 | .mode = 0644, | |
6d9f239a | 1815 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1816 | }, |
1817 | { | |
1da177e4 LT |
1818 | .procname = "timeout_finwait", |
1819 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_FIN_WAIT], | |
1820 | .maxlen = sizeof(int), | |
1821 | .mode = 0644, | |
6d9f239a | 1822 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1823 | }, |
1824 | { | |
1da177e4 LT |
1825 | .procname = "timeout_timewait", |
1826 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_TIME_WAIT], | |
1827 | .maxlen = sizeof(int), | |
1828 | .mode = 0644, | |
6d9f239a | 1829 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1830 | }, |
1831 | { | |
1da177e4 LT |
1832 | .procname = "timeout_close", |
1833 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_CLOSE], | |
1834 | .maxlen = sizeof(int), | |
1835 | .mode = 0644, | |
6d9f239a | 1836 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1837 | }, |
1838 | { | |
1da177e4 LT |
1839 | .procname = "timeout_closewait", |
1840 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_CLOSE_WAIT], | |
1841 | .maxlen = sizeof(int), | |
1842 | .mode = 0644, | |
6d9f239a | 1843 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1844 | }, |
1845 | { | |
1da177e4 LT |
1846 | .procname = "timeout_lastack", |
1847 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_LAST_ACK], | |
1848 | .maxlen = sizeof(int), | |
1849 | .mode = 0644, | |
6d9f239a | 1850 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1851 | }, |
1852 | { | |
1da177e4 LT |
1853 | .procname = "timeout_listen", |
1854 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_LISTEN], | |
1855 | .maxlen = sizeof(int), | |
1856 | .mode = 0644, | |
6d9f239a | 1857 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1858 | }, |
1859 | { | |
1da177e4 LT |
1860 | .procname = "timeout_synack", |
1861 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_SYNACK], | |
1862 | .maxlen = sizeof(int), | |
1863 | .mode = 0644, | |
6d9f239a | 1864 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1865 | }, |
1866 | { | |
1da177e4 LT |
1867 | .procname = "timeout_udp", |
1868 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_UDP], | |
1869 | .maxlen = sizeof(int), | |
1870 | .mode = 0644, | |
6d9f239a | 1871 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1872 | }, |
1873 | { | |
1da177e4 LT |
1874 | .procname = "timeout_icmp", |
1875 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_ICMP], | |
1876 | .maxlen = sizeof(int), | |
1877 | .mode = 0644, | |
6d9f239a | 1878 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1879 | }, |
1880 | #endif | |
f8572d8f | 1881 | { } |
1da177e4 LT |
1882 | }; |
1883 | ||
14e40546 | 1884 | #endif |
1da177e4 | 1885 | |
1da177e4 LT |
1886 | #ifdef CONFIG_PROC_FS |
1887 | ||
1888 | struct ip_vs_iter { | |
fc723250 | 1889 | struct seq_net_private p; /* Do not move this, netns depends upon it*/ |
ceec4c38 | 1890 | struct hlist_head *table; |
1da177e4 LT |
1891 | int bucket; |
1892 | }; | |
1893 | ||
1894 | /* | |
1895 | * Write the contents of the VS rule table to a PROCfs file. | |
1896 | * (It is kept just for backward compatibility) | |
1897 | */ | |
95c96174 | 1898 | static inline const char *ip_vs_fwd_name(unsigned int flags) |
1da177e4 LT |
1899 | { |
1900 | switch (flags & IP_VS_CONN_F_FWD_MASK) { | |
1901 | case IP_VS_CONN_F_LOCALNODE: | |
1902 | return "Local"; | |
1903 | case IP_VS_CONN_F_TUNNEL: | |
1904 | return "Tunnel"; | |
1905 | case IP_VS_CONN_F_DROUTE: | |
1906 | return "Route"; | |
1907 | default: | |
1908 | return "Masq"; | |
1909 | } | |
1910 | } | |
1911 | ||
1912 | ||
1913 | /* Get the Nth entry in the two lists */ | |
1914 | static struct ip_vs_service *ip_vs_info_array(struct seq_file *seq, loff_t pos) | |
1915 | { | |
fc723250 | 1916 | struct net *net = seq_file_net(seq); |
1da177e4 LT |
1917 | struct ip_vs_iter *iter = seq->private; |
1918 | int idx; | |
1919 | struct ip_vs_service *svc; | |
1920 | ||
1921 | /* look in hash by protocol */ | |
1922 | for (idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { | |
ceec4c38 | 1923 | hlist_for_each_entry_rcu(svc, &ip_vs_svc_table[idx], s_list) { |
fc723250 | 1924 | if (net_eq(svc->net, net) && pos-- == 0) { |
1da177e4 LT |
1925 | iter->table = ip_vs_svc_table; |
1926 | iter->bucket = idx; | |
1927 | return svc; | |
1928 | } | |
1929 | } | |
1930 | } | |
1931 | ||
1932 | /* keep looking in fwmark */ | |
1933 | for (idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { | |
ceec4c38 JA |
1934 | hlist_for_each_entry_rcu(svc, &ip_vs_svc_fwm_table[idx], |
1935 | f_list) { | |
fc723250 | 1936 | if (net_eq(svc->net, net) && pos-- == 0) { |
1da177e4 LT |
1937 | iter->table = ip_vs_svc_fwm_table; |
1938 | iter->bucket = idx; | |
1939 | return svc; | |
1940 | } | |
1941 | } | |
1942 | } | |
1943 | ||
1944 | return NULL; | |
1945 | } | |
1946 | ||
1947 | static void *ip_vs_info_seq_start(struct seq_file *seq, loff_t *pos) | |
371990ee | 1948 | __acquires(RCU) |
1da177e4 | 1949 | { |
ceec4c38 | 1950 | rcu_read_lock(); |
1da177e4 LT |
1951 | return *pos ? ip_vs_info_array(seq, *pos - 1) : SEQ_START_TOKEN; |
1952 | } | |
1953 | ||
1954 | ||
1955 | static void *ip_vs_info_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
1956 | { | |
ceec4c38 | 1957 | struct hlist_node *e; |
1da177e4 LT |
1958 | struct ip_vs_iter *iter; |
1959 | struct ip_vs_service *svc; | |
1960 | ||
1961 | ++*pos; | |
1962 | if (v == SEQ_START_TOKEN) | |
1963 | return ip_vs_info_array(seq,0); | |
1964 | ||
1965 | svc = v; | |
1966 | iter = seq->private; | |
1967 | ||
1968 | if (iter->table == ip_vs_svc_table) { | |
1969 | /* next service in table hashed by protocol */ | |
ceec4c38 JA |
1970 | e = rcu_dereference(hlist_next_rcu(&svc->s_list)); |
1971 | if (e) | |
1972 | return hlist_entry(e, struct ip_vs_service, s_list); | |
1da177e4 LT |
1973 | |
1974 | while (++iter->bucket < IP_VS_SVC_TAB_SIZE) { | |
ceec4c38 JA |
1975 | hlist_for_each_entry_rcu(svc, |
1976 | &ip_vs_svc_table[iter->bucket], | |
1977 | s_list) { | |
1da177e4 LT |
1978 | return svc; |
1979 | } | |
1980 | } | |
1981 | ||
1982 | iter->table = ip_vs_svc_fwm_table; | |
1983 | iter->bucket = -1; | |
1984 | goto scan_fwmark; | |
1985 | } | |
1986 | ||
1987 | /* next service in hashed by fwmark */ | |
ceec4c38 JA |
1988 | e = rcu_dereference(hlist_next_rcu(&svc->f_list)); |
1989 | if (e) | |
1990 | return hlist_entry(e, struct ip_vs_service, f_list); | |
1da177e4 LT |
1991 | |
1992 | scan_fwmark: | |
1993 | while (++iter->bucket < IP_VS_SVC_TAB_SIZE) { | |
ceec4c38 JA |
1994 | hlist_for_each_entry_rcu(svc, |
1995 | &ip_vs_svc_fwm_table[iter->bucket], | |
1996 | f_list) | |
1da177e4 LT |
1997 | return svc; |
1998 | } | |
1999 | ||
2000 | return NULL; | |
2001 | } | |
2002 | ||
2003 | static void ip_vs_info_seq_stop(struct seq_file *seq, void *v) | |
371990ee | 2004 | __releases(RCU) |
1da177e4 | 2005 | { |
ceec4c38 | 2006 | rcu_read_unlock(); |
1da177e4 LT |
2007 | } |
2008 | ||
2009 | ||
2010 | static int ip_vs_info_seq_show(struct seq_file *seq, void *v) | |
2011 | { | |
2012 | if (v == SEQ_START_TOKEN) { | |
2013 | seq_printf(seq, | |
2014 | "IP Virtual Server version %d.%d.%d (size=%d)\n", | |
6f7edb48 | 2015 | NVERSION(IP_VS_VERSION_CODE), ip_vs_conn_tab_size); |
1da177e4 LT |
2016 | seq_puts(seq, |
2017 | "Prot LocalAddress:Port Scheduler Flags\n"); | |
2018 | seq_puts(seq, | |
2019 | " -> RemoteAddress:Port Forward Weight ActiveConn InActConn\n"); | |
2020 | } else { | |
2021 | const struct ip_vs_service *svc = v; | |
2022 | const struct ip_vs_iter *iter = seq->private; | |
2023 | const struct ip_vs_dest *dest; | |
ceec4c38 | 2024 | struct ip_vs_scheduler *sched = rcu_dereference(svc->scheduler); |
1da177e4 | 2025 | |
667a5f18 VB |
2026 | if (iter->table == ip_vs_svc_table) { |
2027 | #ifdef CONFIG_IP_VS_IPV6 | |
2028 | if (svc->af == AF_INET6) | |
5b095d98 | 2029 | seq_printf(seq, "%s [%pI6]:%04X %s ", |
667a5f18 | 2030 | ip_vs_proto_name(svc->protocol), |
38ff4fa4 | 2031 | &svc->addr.in6, |
667a5f18 | 2032 | ntohs(svc->port), |
ceec4c38 | 2033 | sched->name); |
667a5f18 VB |
2034 | else |
2035 | #endif | |
26ec037f | 2036 | seq_printf(seq, "%s %08X:%04X %s %s ", |
667a5f18 VB |
2037 | ip_vs_proto_name(svc->protocol), |
2038 | ntohl(svc->addr.ip), | |
2039 | ntohs(svc->port), | |
ceec4c38 | 2040 | sched->name, |
26ec037f | 2041 | (svc->flags & IP_VS_SVC_F_ONEPACKET)?"ops ":""); |
667a5f18 | 2042 | } else { |
26ec037f | 2043 | seq_printf(seq, "FWM %08X %s %s", |
ceec4c38 | 2044 | svc->fwmark, sched->name, |
26ec037f | 2045 | (svc->flags & IP_VS_SVC_F_ONEPACKET)?"ops ":""); |
667a5f18 | 2046 | } |
1da177e4 LT |
2047 | |
2048 | if (svc->flags & IP_VS_SVC_F_PERSISTENT) | |
2049 | seq_printf(seq, "persistent %d %08X\n", | |
2050 | svc->timeout, | |
2051 | ntohl(svc->netmask)); | |
2052 | else | |
2053 | seq_putc(seq, '\n'); | |
2054 | ||
413c2d04 | 2055 | list_for_each_entry_rcu(dest, &svc->destinations, n_list) { |
667a5f18 VB |
2056 | #ifdef CONFIG_IP_VS_IPV6 |
2057 | if (dest->af == AF_INET6) | |
2058 | seq_printf(seq, | |
5b095d98 | 2059 | " -> [%pI6]:%04X" |
667a5f18 | 2060 | " %-7s %-6d %-10d %-10d\n", |
38ff4fa4 | 2061 | &dest->addr.in6, |
667a5f18 VB |
2062 | ntohs(dest->port), |
2063 | ip_vs_fwd_name(atomic_read(&dest->conn_flags)), | |
2064 | atomic_read(&dest->weight), | |
2065 | atomic_read(&dest->activeconns), | |
2066 | atomic_read(&dest->inactconns)); | |
2067 | else | |
2068 | #endif | |
2069 | seq_printf(seq, | |
2070 | " -> %08X:%04X " | |
2071 | "%-7s %-6d %-10d %-10d\n", | |
2072 | ntohl(dest->addr.ip), | |
2073 | ntohs(dest->port), | |
2074 | ip_vs_fwd_name(atomic_read(&dest->conn_flags)), | |
2075 | atomic_read(&dest->weight), | |
2076 | atomic_read(&dest->activeconns), | |
2077 | atomic_read(&dest->inactconns)); | |
2078 | ||
1da177e4 LT |
2079 | } |
2080 | } | |
2081 | return 0; | |
2082 | } | |
2083 | ||
56b3d975 | 2084 | static const struct seq_operations ip_vs_info_seq_ops = { |
1da177e4 LT |
2085 | .start = ip_vs_info_seq_start, |
2086 | .next = ip_vs_info_seq_next, | |
2087 | .stop = ip_vs_info_seq_stop, | |
2088 | .show = ip_vs_info_seq_show, | |
2089 | }; | |
2090 | ||
2091 | static int ip_vs_info_open(struct inode *inode, struct file *file) | |
2092 | { | |
fc723250 | 2093 | return seq_open_net(inode, file, &ip_vs_info_seq_ops, |
cf7732e4 | 2094 | sizeof(struct ip_vs_iter)); |
1da177e4 LT |
2095 | } |
2096 | ||
9a32144e | 2097 | static const struct file_operations ip_vs_info_fops = { |
1da177e4 LT |
2098 | .owner = THIS_MODULE, |
2099 | .open = ip_vs_info_open, | |
2100 | .read = seq_read, | |
2101 | .llseek = seq_lseek, | |
0f08190f | 2102 | .release = seq_release_net, |
1da177e4 LT |
2103 | }; |
2104 | ||
1da177e4 LT |
2105 | static int ip_vs_stats_show(struct seq_file *seq, void *v) |
2106 | { | |
b17fc996 | 2107 | struct net *net = seq_file_single_net(seq); |
55a3d4e1 | 2108 | struct ip_vs_stats_user show; |
1da177e4 LT |
2109 | |
2110 | /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */ | |
2111 | seq_puts(seq, | |
2112 | " Total Incoming Outgoing Incoming Outgoing\n"); | |
2113 | seq_printf(seq, | |
2114 | " Conns Packets Packets Bytes Bytes\n"); | |
2115 | ||
55a3d4e1 JA |
2116 | ip_vs_copy_stats(&show, &net_ipvs(net)->tot_stats); |
2117 | seq_printf(seq, "%8X %8X %8X %16LX %16LX\n\n", show.conns, | |
2118 | show.inpkts, show.outpkts, | |
2119 | (unsigned long long) show.inbytes, | |
2120 | (unsigned long long) show.outbytes); | |
1da177e4 LT |
2121 | |
2122 | /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */ | |
2123 | seq_puts(seq, | |
2124 | " Conns/s Pkts/s Pkts/s Bytes/s Bytes/s\n"); | |
55a3d4e1 JA |
2125 | seq_printf(seq, "%8X %8X %8X %16X %16X\n", |
2126 | show.cps, show.inpps, show.outpps, | |
2127 | show.inbps, show.outbps); | |
1da177e4 LT |
2128 | |
2129 | return 0; | |
2130 | } | |
2131 | ||
2132 | static int ip_vs_stats_seq_open(struct inode *inode, struct file *file) | |
2133 | { | |
fc723250 | 2134 | return single_open_net(inode, file, ip_vs_stats_show); |
1da177e4 LT |
2135 | } |
2136 | ||
9a32144e | 2137 | static const struct file_operations ip_vs_stats_fops = { |
1da177e4 LT |
2138 | .owner = THIS_MODULE, |
2139 | .open = ip_vs_stats_seq_open, | |
2140 | .read = seq_read, | |
2141 | .llseek = seq_lseek, | |
0f08190f | 2142 | .release = single_release_net, |
1da177e4 LT |
2143 | }; |
2144 | ||
b17fc996 HS |
2145 | static int ip_vs_stats_percpu_show(struct seq_file *seq, void *v) |
2146 | { | |
2147 | struct net *net = seq_file_single_net(seq); | |
2a0751af | 2148 | struct ip_vs_stats *tot_stats = &net_ipvs(net)->tot_stats; |
371990ee | 2149 | struct ip_vs_cpu_stats __percpu *cpustats = tot_stats->cpustats; |
ea9f22cc | 2150 | struct ip_vs_stats_user rates; |
b17fc996 HS |
2151 | int i; |
2152 | ||
2153 | /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */ | |
2154 | seq_puts(seq, | |
2155 | " Total Incoming Outgoing Incoming Outgoing\n"); | |
2156 | seq_printf(seq, | |
2157 | "CPU Conns Packets Packets Bytes Bytes\n"); | |
2158 | ||
2159 | for_each_possible_cpu(i) { | |
2a0751af JA |
2160 | struct ip_vs_cpu_stats *u = per_cpu_ptr(cpustats, i); |
2161 | unsigned int start; | |
2162 | __u64 inbytes, outbytes; | |
2163 | ||
2164 | do { | |
2165 | start = u64_stats_fetch_begin_bh(&u->syncp); | |
2166 | inbytes = u->ustats.inbytes; | |
2167 | outbytes = u->ustats.outbytes; | |
2168 | } while (u64_stats_fetch_retry_bh(&u->syncp, start)); | |
2169 | ||
b17fc996 | 2170 | seq_printf(seq, "%3X %8X %8X %8X %16LX %16LX\n", |
2a0751af JA |
2171 | i, u->ustats.conns, u->ustats.inpkts, |
2172 | u->ustats.outpkts, (__u64)inbytes, | |
2173 | (__u64)outbytes); | |
b17fc996 HS |
2174 | } |
2175 | ||
2176 | spin_lock_bh(&tot_stats->lock); | |
ea9f22cc | 2177 | |
b17fc996 HS |
2178 | seq_printf(seq, " ~ %8X %8X %8X %16LX %16LX\n\n", |
2179 | tot_stats->ustats.conns, tot_stats->ustats.inpkts, | |
2180 | tot_stats->ustats.outpkts, | |
2181 | (unsigned long long) tot_stats->ustats.inbytes, | |
2182 | (unsigned long long) tot_stats->ustats.outbytes); | |
2183 | ||
ea9f22cc JA |
2184 | ip_vs_read_estimator(&rates, tot_stats); |
2185 | ||
2186 | spin_unlock_bh(&tot_stats->lock); | |
2187 | ||
b17fc996 HS |
2188 | /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */ |
2189 | seq_puts(seq, | |
2190 | " Conns/s Pkts/s Pkts/s Bytes/s Bytes/s\n"); | |
2191 | seq_printf(seq, " %8X %8X %8X %16X %16X\n", | |
ea9f22cc JA |
2192 | rates.cps, |
2193 | rates.inpps, | |
2194 | rates.outpps, | |
2195 | rates.inbps, | |
2196 | rates.outbps); | |
b17fc996 HS |
2197 | |
2198 | return 0; | |
2199 | } | |
2200 | ||
2201 | static int ip_vs_stats_percpu_seq_open(struct inode *inode, struct file *file) | |
2202 | { | |
2203 | return single_open_net(inode, file, ip_vs_stats_percpu_show); | |
2204 | } | |
2205 | ||
2206 | static const struct file_operations ip_vs_stats_percpu_fops = { | |
2207 | .owner = THIS_MODULE, | |
2208 | .open = ip_vs_stats_percpu_seq_open, | |
2209 | .read = seq_read, | |
2210 | .llseek = seq_lseek, | |
0f08190f | 2211 | .release = single_release_net, |
b17fc996 | 2212 | }; |
1da177e4 LT |
2213 | #endif |
2214 | ||
2215 | /* | |
2216 | * Set timeout values for tcp tcpfin udp in the timeout_table. | |
2217 | */ | |
9330419d | 2218 | static int ip_vs_set_timeout(struct net *net, struct ip_vs_timeout_user *u) |
1da177e4 | 2219 | { |
091bb34c | 2220 | #if defined(CONFIG_IP_VS_PROTO_TCP) || defined(CONFIG_IP_VS_PROTO_UDP) |
9330419d | 2221 | struct ip_vs_proto_data *pd; |
091bb34c | 2222 | #endif |
9330419d | 2223 | |
1da177e4 LT |
2224 | IP_VS_DBG(2, "Setting timeout tcp:%d tcpfin:%d udp:%d\n", |
2225 | u->tcp_timeout, | |
2226 | u->tcp_fin_timeout, | |
2227 | u->udp_timeout); | |
2228 | ||
2229 | #ifdef CONFIG_IP_VS_PROTO_TCP | |
2230 | if (u->tcp_timeout) { | |
9330419d HS |
2231 | pd = ip_vs_proto_data_get(net, IPPROTO_TCP); |
2232 | pd->timeout_table[IP_VS_TCP_S_ESTABLISHED] | |
1da177e4 LT |
2233 | = u->tcp_timeout * HZ; |
2234 | } | |
2235 | ||
2236 | if (u->tcp_fin_timeout) { | |
9330419d HS |
2237 | pd = ip_vs_proto_data_get(net, IPPROTO_TCP); |
2238 | pd->timeout_table[IP_VS_TCP_S_FIN_WAIT] | |
1da177e4 LT |
2239 | = u->tcp_fin_timeout * HZ; |
2240 | } | |
2241 | #endif | |
2242 | ||
2243 | #ifdef CONFIG_IP_VS_PROTO_UDP | |
2244 | if (u->udp_timeout) { | |
9330419d HS |
2245 | pd = ip_vs_proto_data_get(net, IPPROTO_UDP); |
2246 | pd->timeout_table[IP_VS_UDP_S_NORMAL] | |
1da177e4 LT |
2247 | = u->udp_timeout * HZ; |
2248 | } | |
2249 | #endif | |
2250 | return 0; | |
2251 | } | |
2252 | ||
2253 | ||
2254 | #define SET_CMDID(cmd) (cmd - IP_VS_BASE_CTL) | |
2255 | #define SERVICE_ARG_LEN (sizeof(struct ip_vs_service_user)) | |
2256 | #define SVCDEST_ARG_LEN (sizeof(struct ip_vs_service_user) + \ | |
2257 | sizeof(struct ip_vs_dest_user)) | |
2258 | #define TIMEOUT_ARG_LEN (sizeof(struct ip_vs_timeout_user)) | |
2259 | #define DAEMON_ARG_LEN (sizeof(struct ip_vs_daemon_user)) | |
2260 | #define MAX_ARG_LEN SVCDEST_ARG_LEN | |
2261 | ||
9b5b5cff | 2262 | static const unsigned char set_arglen[SET_CMDID(IP_VS_SO_SET_MAX)+1] = { |
1da177e4 LT |
2263 | [SET_CMDID(IP_VS_SO_SET_ADD)] = SERVICE_ARG_LEN, |
2264 | [SET_CMDID(IP_VS_SO_SET_EDIT)] = SERVICE_ARG_LEN, | |
2265 | [SET_CMDID(IP_VS_SO_SET_DEL)] = SERVICE_ARG_LEN, | |
2266 | [SET_CMDID(IP_VS_SO_SET_FLUSH)] = 0, | |
2267 | [SET_CMDID(IP_VS_SO_SET_ADDDEST)] = SVCDEST_ARG_LEN, | |
2268 | [SET_CMDID(IP_VS_SO_SET_DELDEST)] = SVCDEST_ARG_LEN, | |
2269 | [SET_CMDID(IP_VS_SO_SET_EDITDEST)] = SVCDEST_ARG_LEN, | |
2270 | [SET_CMDID(IP_VS_SO_SET_TIMEOUT)] = TIMEOUT_ARG_LEN, | |
2271 | [SET_CMDID(IP_VS_SO_SET_STARTDAEMON)] = DAEMON_ARG_LEN, | |
2272 | [SET_CMDID(IP_VS_SO_SET_STOPDAEMON)] = DAEMON_ARG_LEN, | |
2273 | [SET_CMDID(IP_VS_SO_SET_ZERO)] = SERVICE_ARG_LEN, | |
2274 | }; | |
2275 | ||
c860c6b1 JV |
2276 | static void ip_vs_copy_usvc_compat(struct ip_vs_service_user_kern *usvc, |
2277 | struct ip_vs_service_user *usvc_compat) | |
2278 | { | |
0d1e71b0 SH |
2279 | memset(usvc, 0, sizeof(*usvc)); |
2280 | ||
c860c6b1 JV |
2281 | usvc->af = AF_INET; |
2282 | usvc->protocol = usvc_compat->protocol; | |
2283 | usvc->addr.ip = usvc_compat->addr; | |
2284 | usvc->port = usvc_compat->port; | |
2285 | usvc->fwmark = usvc_compat->fwmark; | |
2286 | ||
2287 | /* Deep copy of sched_name is not needed here */ | |
2288 | usvc->sched_name = usvc_compat->sched_name; | |
2289 | ||
2290 | usvc->flags = usvc_compat->flags; | |
2291 | usvc->timeout = usvc_compat->timeout; | |
2292 | usvc->netmask = usvc_compat->netmask; | |
2293 | } | |
2294 | ||
2295 | static void ip_vs_copy_udest_compat(struct ip_vs_dest_user_kern *udest, | |
2296 | struct ip_vs_dest_user *udest_compat) | |
2297 | { | |
0d1e71b0 SH |
2298 | memset(udest, 0, sizeof(*udest)); |
2299 | ||
c860c6b1 JV |
2300 | udest->addr.ip = udest_compat->addr; |
2301 | udest->port = udest_compat->port; | |
2302 | udest->conn_flags = udest_compat->conn_flags; | |
2303 | udest->weight = udest_compat->weight; | |
2304 | udest->u_threshold = udest_compat->u_threshold; | |
2305 | udest->l_threshold = udest_compat->l_threshold; | |
2306 | } | |
2307 | ||
1da177e4 LT |
2308 | static int |
2309 | do_ip_vs_set_ctl(struct sock *sk, int cmd, void __user *user, unsigned int len) | |
2310 | { | |
fc723250 | 2311 | struct net *net = sock_net(sk); |
1da177e4 LT |
2312 | int ret; |
2313 | unsigned char arg[MAX_ARG_LEN]; | |
c860c6b1 JV |
2314 | struct ip_vs_service_user *usvc_compat; |
2315 | struct ip_vs_service_user_kern usvc; | |
1da177e4 | 2316 | struct ip_vs_service *svc; |
c860c6b1 JV |
2317 | struct ip_vs_dest_user *udest_compat; |
2318 | struct ip_vs_dest_user_kern udest; | |
ae1d48b2 | 2319 | struct netns_ipvs *ipvs = net_ipvs(net); |
1da177e4 | 2320 | |
df008c91 | 2321 | if (!ns_capable(sock_net(sk)->user_ns, CAP_NET_ADMIN)) |
1da177e4 LT |
2322 | return -EPERM; |
2323 | ||
04bcef2a AV |
2324 | if (cmd < IP_VS_BASE_CTL || cmd > IP_VS_SO_SET_MAX) |
2325 | return -EINVAL; | |
2326 | if (len < 0 || len > MAX_ARG_LEN) | |
2327 | return -EINVAL; | |
1da177e4 | 2328 | if (len != set_arglen[SET_CMDID(cmd)]) { |
1e3e238e HE |
2329 | pr_err("set_ctl: len %u != %u\n", |
2330 | len, set_arglen[SET_CMDID(cmd)]); | |
1da177e4 LT |
2331 | return -EINVAL; |
2332 | } | |
2333 | ||
2334 | if (copy_from_user(arg, user, len) != 0) | |
2335 | return -EFAULT; | |
2336 | ||
2337 | /* increase the module use count */ | |
2338 | ip_vs_use_count_inc(); | |
2339 | ||
ae1d48b2 HS |
2340 | /* Handle daemons since they have another lock */ |
2341 | if (cmd == IP_VS_SO_SET_STARTDAEMON || | |
2342 | cmd == IP_VS_SO_SET_STOPDAEMON) { | |
2343 | struct ip_vs_daemon_user *dm = (struct ip_vs_daemon_user *)arg; | |
2344 | ||
2345 | if (mutex_lock_interruptible(&ipvs->sync_mutex)) { | |
2346 | ret = -ERESTARTSYS; | |
2347 | goto out_dec; | |
2348 | } | |
2349 | if (cmd == IP_VS_SO_SET_STARTDAEMON) | |
2350 | ret = start_sync_thread(net, dm->state, dm->mcast_ifn, | |
2351 | dm->syncid); | |
2352 | else | |
2353 | ret = stop_sync_thread(net, dm->state); | |
2354 | mutex_unlock(&ipvs->sync_mutex); | |
2355 | goto out_dec; | |
2356 | } | |
2357 | ||
14cc3e2b | 2358 | if (mutex_lock_interruptible(&__ip_vs_mutex)) { |
1da177e4 LT |
2359 | ret = -ERESTARTSYS; |
2360 | goto out_dec; | |
2361 | } | |
2362 | ||
2363 | if (cmd == IP_VS_SO_SET_FLUSH) { | |
2364 | /* Flush the virtual service */ | |
578bc3ef | 2365 | ret = ip_vs_flush(net, false); |
1da177e4 LT |
2366 | goto out_unlock; |
2367 | } else if (cmd == IP_VS_SO_SET_TIMEOUT) { | |
2368 | /* Set timeout values for (tcp tcpfin udp) */ | |
9330419d | 2369 | ret = ip_vs_set_timeout(net, (struct ip_vs_timeout_user *)arg); |
1da177e4 | 2370 | goto out_unlock; |
1da177e4 LT |
2371 | } |
2372 | ||
c860c6b1 JV |
2373 | usvc_compat = (struct ip_vs_service_user *)arg; |
2374 | udest_compat = (struct ip_vs_dest_user *)(usvc_compat + 1); | |
2375 | ||
2376 | /* We only use the new structs internally, so copy userspace compat | |
2377 | * structs to extended internal versions */ | |
2378 | ip_vs_copy_usvc_compat(&usvc, usvc_compat); | |
2379 | ip_vs_copy_udest_compat(&udest, udest_compat); | |
1da177e4 LT |
2380 | |
2381 | if (cmd == IP_VS_SO_SET_ZERO) { | |
2382 | /* if no service address is set, zero counters in all */ | |
c860c6b1 | 2383 | if (!usvc.fwmark && !usvc.addr.ip && !usvc.port) { |
fc723250 | 2384 | ret = ip_vs_zero_all(net); |
1da177e4 LT |
2385 | goto out_unlock; |
2386 | } | |
2387 | } | |
2388 | ||
2906f66a VMR |
2389 | /* Check for valid protocol: TCP or UDP or SCTP, even for fwmark!=0 */ |
2390 | if (usvc.protocol != IPPROTO_TCP && usvc.protocol != IPPROTO_UDP && | |
2391 | usvc.protocol != IPPROTO_SCTP) { | |
1e3e238e HE |
2392 | pr_err("set_ctl: invalid protocol: %d %pI4:%d %s\n", |
2393 | usvc.protocol, &usvc.addr.ip, | |
2394 | ntohs(usvc.port), usvc.sched_name); | |
1da177e4 LT |
2395 | ret = -EFAULT; |
2396 | goto out_unlock; | |
2397 | } | |
2398 | ||
2399 | /* Lookup the exact service by <protocol, addr, port> or fwmark */ | |
ceec4c38 | 2400 | rcu_read_lock(); |
c860c6b1 | 2401 | if (usvc.fwmark == 0) |
fc723250 | 2402 | svc = __ip_vs_service_find(net, usvc.af, usvc.protocol, |
26c15cfd | 2403 | &usvc.addr, usvc.port); |
1da177e4 | 2404 | else |
fc723250 | 2405 | svc = __ip_vs_svc_fwm_find(net, usvc.af, usvc.fwmark); |
ceec4c38 | 2406 | rcu_read_unlock(); |
1da177e4 LT |
2407 | |
2408 | if (cmd != IP_VS_SO_SET_ADD | |
c860c6b1 | 2409 | && (svc == NULL || svc->protocol != usvc.protocol)) { |
1da177e4 | 2410 | ret = -ESRCH; |
26c15cfd | 2411 | goto out_unlock; |
1da177e4 LT |
2412 | } |
2413 | ||
2414 | switch (cmd) { | |
2415 | case IP_VS_SO_SET_ADD: | |
2416 | if (svc != NULL) | |
2417 | ret = -EEXIST; | |
2418 | else | |
fc723250 | 2419 | ret = ip_vs_add_service(net, &usvc, &svc); |
1da177e4 LT |
2420 | break; |
2421 | case IP_VS_SO_SET_EDIT: | |
c860c6b1 | 2422 | ret = ip_vs_edit_service(svc, &usvc); |
1da177e4 LT |
2423 | break; |
2424 | case IP_VS_SO_SET_DEL: | |
2425 | ret = ip_vs_del_service(svc); | |
2426 | if (!ret) | |
2427 | goto out_unlock; | |
2428 | break; | |
2429 | case IP_VS_SO_SET_ZERO: | |
2430 | ret = ip_vs_zero_service(svc); | |
2431 | break; | |
2432 | case IP_VS_SO_SET_ADDDEST: | |
c860c6b1 | 2433 | ret = ip_vs_add_dest(svc, &udest); |
1da177e4 LT |
2434 | break; |
2435 | case IP_VS_SO_SET_EDITDEST: | |
c860c6b1 | 2436 | ret = ip_vs_edit_dest(svc, &udest); |
1da177e4 LT |
2437 | break; |
2438 | case IP_VS_SO_SET_DELDEST: | |
c860c6b1 | 2439 | ret = ip_vs_del_dest(svc, &udest); |
1da177e4 LT |
2440 | break; |
2441 | default: | |
2442 | ret = -EINVAL; | |
2443 | } | |
2444 | ||
1da177e4 | 2445 | out_unlock: |
14cc3e2b | 2446 | mutex_unlock(&__ip_vs_mutex); |
1da177e4 LT |
2447 | out_dec: |
2448 | /* decrease the module use count */ | |
2449 | ip_vs_use_count_dec(); | |
2450 | ||
2451 | return ret; | |
2452 | } | |
2453 | ||
2454 | ||
1da177e4 LT |
2455 | static void |
2456 | ip_vs_copy_service(struct ip_vs_service_entry *dst, struct ip_vs_service *src) | |
2457 | { | |
ceec4c38 JA |
2458 | struct ip_vs_scheduler *sched; |
2459 | ||
2460 | sched = rcu_dereference_protected(src->scheduler, 1); | |
1da177e4 | 2461 | dst->protocol = src->protocol; |
e7ade46a | 2462 | dst->addr = src->addr.ip; |
1da177e4 LT |
2463 | dst->port = src->port; |
2464 | dst->fwmark = src->fwmark; | |
ceec4c38 | 2465 | strlcpy(dst->sched_name, sched->name, sizeof(dst->sched_name)); |
1da177e4 LT |
2466 | dst->flags = src->flags; |
2467 | dst->timeout = src->timeout / HZ; | |
2468 | dst->netmask = src->netmask; | |
2469 | dst->num_dests = src->num_dests; | |
2470 | ip_vs_copy_stats(&dst->stats, &src->stats); | |
2471 | } | |
2472 | ||
2473 | static inline int | |
fc723250 HS |
2474 | __ip_vs_get_service_entries(struct net *net, |
2475 | const struct ip_vs_get_services *get, | |
1da177e4 LT |
2476 | struct ip_vs_get_services __user *uptr) |
2477 | { | |
2478 | int idx, count=0; | |
2479 | struct ip_vs_service *svc; | |
2480 | struct ip_vs_service_entry entry; | |
2481 | int ret = 0; | |
2482 | ||
2483 | for (idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { | |
ceec4c38 | 2484 | hlist_for_each_entry(svc, &ip_vs_svc_table[idx], s_list) { |
f94fd041 | 2485 | /* Only expose IPv4 entries to old interface */ |
fc723250 | 2486 | if (svc->af != AF_INET || !net_eq(svc->net, net)) |
f94fd041 JV |
2487 | continue; |
2488 | ||
1da177e4 LT |
2489 | if (count >= get->num_services) |
2490 | goto out; | |
4da62fc7 | 2491 | memset(&entry, 0, sizeof(entry)); |
1da177e4 LT |
2492 | ip_vs_copy_service(&entry, svc); |
2493 | if (copy_to_user(&uptr->entrytable[count], | |
2494 | &entry, sizeof(entry))) { | |
2495 | ret = -EFAULT; | |
2496 | goto out; | |
2497 | } | |
2498 | count++; | |
2499 | } | |
2500 | } | |
2501 | ||
2502 | for (idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { | |
ceec4c38 | 2503 | hlist_for_each_entry(svc, &ip_vs_svc_fwm_table[idx], f_list) { |
f94fd041 | 2504 | /* Only expose IPv4 entries to old interface */ |
fc723250 | 2505 | if (svc->af != AF_INET || !net_eq(svc->net, net)) |
f94fd041 JV |
2506 | continue; |
2507 | ||
1da177e4 LT |
2508 | if (count >= get->num_services) |
2509 | goto out; | |
4da62fc7 | 2510 | memset(&entry, 0, sizeof(entry)); |
1da177e4 LT |
2511 | ip_vs_copy_service(&entry, svc); |
2512 | if (copy_to_user(&uptr->entrytable[count], | |
2513 | &entry, sizeof(entry))) { | |
2514 | ret = -EFAULT; | |
2515 | goto out; | |
2516 | } | |
2517 | count++; | |
2518 | } | |
2519 | } | |
552ad65a | 2520 | out: |
1da177e4 LT |
2521 | return ret; |
2522 | } | |
2523 | ||
2524 | static inline int | |
fc723250 | 2525 | __ip_vs_get_dest_entries(struct net *net, const struct ip_vs_get_dests *get, |
1da177e4 LT |
2526 | struct ip_vs_get_dests __user *uptr) |
2527 | { | |
2528 | struct ip_vs_service *svc; | |
b18610de | 2529 | union nf_inet_addr addr = { .ip = get->addr }; |
1da177e4 LT |
2530 | int ret = 0; |
2531 | ||
ceec4c38 | 2532 | rcu_read_lock(); |
1da177e4 | 2533 | if (get->fwmark) |
fc723250 | 2534 | svc = __ip_vs_svc_fwm_find(net, AF_INET, get->fwmark); |
1da177e4 | 2535 | else |
fc723250 | 2536 | svc = __ip_vs_service_find(net, AF_INET, get->protocol, &addr, |
26c15cfd | 2537 | get->port); |
ceec4c38 | 2538 | rcu_read_unlock(); |
b18610de | 2539 | |
1da177e4 LT |
2540 | if (svc) { |
2541 | int count = 0; | |
2542 | struct ip_vs_dest *dest; | |
2543 | struct ip_vs_dest_entry entry; | |
2544 | ||
2545 | list_for_each_entry(dest, &svc->destinations, n_list) { | |
2546 | if (count >= get->num_dests) | |
2547 | break; | |
2548 | ||
e7ade46a | 2549 | entry.addr = dest->addr.ip; |
1da177e4 LT |
2550 | entry.port = dest->port; |
2551 | entry.conn_flags = atomic_read(&dest->conn_flags); | |
2552 | entry.weight = atomic_read(&dest->weight); | |
2553 | entry.u_threshold = dest->u_threshold; | |
2554 | entry.l_threshold = dest->l_threshold; | |
2555 | entry.activeconns = atomic_read(&dest->activeconns); | |
2556 | entry.inactconns = atomic_read(&dest->inactconns); | |
2557 | entry.persistconns = atomic_read(&dest->persistconns); | |
2558 | ip_vs_copy_stats(&entry.stats, &dest->stats); | |
2559 | if (copy_to_user(&uptr->entrytable[count], | |
2560 | &entry, sizeof(entry))) { | |
2561 | ret = -EFAULT; | |
2562 | break; | |
2563 | } | |
2564 | count++; | |
2565 | } | |
1da177e4 LT |
2566 | } else |
2567 | ret = -ESRCH; | |
2568 | return ret; | |
2569 | } | |
2570 | ||
2571 | static inline void | |
9330419d | 2572 | __ip_vs_get_timeouts(struct net *net, struct ip_vs_timeout_user *u) |
1da177e4 | 2573 | { |
091bb34c | 2574 | #if defined(CONFIG_IP_VS_PROTO_TCP) || defined(CONFIG_IP_VS_PROTO_UDP) |
9330419d | 2575 | struct ip_vs_proto_data *pd; |
091bb34c | 2576 | #endif |
9330419d | 2577 | |
b61a602e AB |
2578 | memset(u, 0, sizeof (*u)); |
2579 | ||
1da177e4 | 2580 | #ifdef CONFIG_IP_VS_PROTO_TCP |
9330419d HS |
2581 | pd = ip_vs_proto_data_get(net, IPPROTO_TCP); |
2582 | u->tcp_timeout = pd->timeout_table[IP_VS_TCP_S_ESTABLISHED] / HZ; | |
2583 | u->tcp_fin_timeout = pd->timeout_table[IP_VS_TCP_S_FIN_WAIT] / HZ; | |
1da177e4 LT |
2584 | #endif |
2585 | #ifdef CONFIG_IP_VS_PROTO_UDP | |
9330419d | 2586 | pd = ip_vs_proto_data_get(net, IPPROTO_UDP); |
1da177e4 | 2587 | u->udp_timeout = |
9330419d | 2588 | pd->timeout_table[IP_VS_UDP_S_NORMAL] / HZ; |
1da177e4 LT |
2589 | #endif |
2590 | } | |
2591 | ||
2592 | ||
2593 | #define GET_CMDID(cmd) (cmd - IP_VS_BASE_CTL) | |
2594 | #define GET_INFO_ARG_LEN (sizeof(struct ip_vs_getinfo)) | |
2595 | #define GET_SERVICES_ARG_LEN (sizeof(struct ip_vs_get_services)) | |
2596 | #define GET_SERVICE_ARG_LEN (sizeof(struct ip_vs_service_entry)) | |
2597 | #define GET_DESTS_ARG_LEN (sizeof(struct ip_vs_get_dests)) | |
2598 | #define GET_TIMEOUT_ARG_LEN (sizeof(struct ip_vs_timeout_user)) | |
2599 | #define GET_DAEMON_ARG_LEN (sizeof(struct ip_vs_daemon_user) * 2) | |
2600 | ||
9b5b5cff | 2601 | static const unsigned char get_arglen[GET_CMDID(IP_VS_SO_GET_MAX)+1] = { |
1da177e4 LT |
2602 | [GET_CMDID(IP_VS_SO_GET_VERSION)] = 64, |
2603 | [GET_CMDID(IP_VS_SO_GET_INFO)] = GET_INFO_ARG_LEN, | |
2604 | [GET_CMDID(IP_VS_SO_GET_SERVICES)] = GET_SERVICES_ARG_LEN, | |
2605 | [GET_CMDID(IP_VS_SO_GET_SERVICE)] = GET_SERVICE_ARG_LEN, | |
2606 | [GET_CMDID(IP_VS_SO_GET_DESTS)] = GET_DESTS_ARG_LEN, | |
2607 | [GET_CMDID(IP_VS_SO_GET_TIMEOUT)] = GET_TIMEOUT_ARG_LEN, | |
2608 | [GET_CMDID(IP_VS_SO_GET_DAEMON)] = GET_DAEMON_ARG_LEN, | |
2609 | }; | |
2610 | ||
2611 | static int | |
2612 | do_ip_vs_get_ctl(struct sock *sk, int cmd, void __user *user, int *len) | |
2613 | { | |
2614 | unsigned char arg[128]; | |
2615 | int ret = 0; | |
04bcef2a | 2616 | unsigned int copylen; |
fc723250 | 2617 | struct net *net = sock_net(sk); |
f131315f | 2618 | struct netns_ipvs *ipvs = net_ipvs(net); |
1da177e4 | 2619 | |
fc723250 | 2620 | BUG_ON(!net); |
df008c91 | 2621 | if (!ns_capable(sock_net(sk)->user_ns, CAP_NET_ADMIN)) |
1da177e4 LT |
2622 | return -EPERM; |
2623 | ||
04bcef2a AV |
2624 | if (cmd < IP_VS_BASE_CTL || cmd > IP_VS_SO_GET_MAX) |
2625 | return -EINVAL; | |
2626 | ||
1da177e4 | 2627 | if (*len < get_arglen[GET_CMDID(cmd)]) { |
1e3e238e HE |
2628 | pr_err("get_ctl: len %u < %u\n", |
2629 | *len, get_arglen[GET_CMDID(cmd)]); | |
1da177e4 LT |
2630 | return -EINVAL; |
2631 | } | |
2632 | ||
04bcef2a AV |
2633 | copylen = get_arglen[GET_CMDID(cmd)]; |
2634 | if (copylen > 128) | |
2635 | return -EINVAL; | |
2636 | ||
2637 | if (copy_from_user(arg, user, copylen) != 0) | |
1da177e4 | 2638 | return -EFAULT; |
ae1d48b2 HS |
2639 | /* |
2640 | * Handle daemons first since it has its own locking | |
2641 | */ | |
2642 | if (cmd == IP_VS_SO_GET_DAEMON) { | |
2643 | struct ip_vs_daemon_user d[2]; | |
2644 | ||
2645 | memset(&d, 0, sizeof(d)); | |
2646 | if (mutex_lock_interruptible(&ipvs->sync_mutex)) | |
2647 | return -ERESTARTSYS; | |
2648 | ||
2649 | if (ipvs->sync_state & IP_VS_STATE_MASTER) { | |
2650 | d[0].state = IP_VS_STATE_MASTER; | |
2651 | strlcpy(d[0].mcast_ifn, ipvs->master_mcast_ifn, | |
2652 | sizeof(d[0].mcast_ifn)); | |
2653 | d[0].syncid = ipvs->master_syncid; | |
2654 | } | |
2655 | if (ipvs->sync_state & IP_VS_STATE_BACKUP) { | |
2656 | d[1].state = IP_VS_STATE_BACKUP; | |
2657 | strlcpy(d[1].mcast_ifn, ipvs->backup_mcast_ifn, | |
2658 | sizeof(d[1].mcast_ifn)); | |
2659 | d[1].syncid = ipvs->backup_syncid; | |
2660 | } | |
2661 | if (copy_to_user(user, &d, sizeof(d)) != 0) | |
2662 | ret = -EFAULT; | |
2663 | mutex_unlock(&ipvs->sync_mutex); | |
2664 | return ret; | |
2665 | } | |
1da177e4 | 2666 | |
14cc3e2b | 2667 | if (mutex_lock_interruptible(&__ip_vs_mutex)) |
1da177e4 LT |
2668 | return -ERESTARTSYS; |
2669 | ||
2670 | switch (cmd) { | |
2671 | case IP_VS_SO_GET_VERSION: | |
2672 | { | |
2673 | char buf[64]; | |
2674 | ||
2675 | sprintf(buf, "IP Virtual Server version %d.%d.%d (size=%d)", | |
6f7edb48 | 2676 | NVERSION(IP_VS_VERSION_CODE), ip_vs_conn_tab_size); |
1da177e4 LT |
2677 | if (copy_to_user(user, buf, strlen(buf)+1) != 0) { |
2678 | ret = -EFAULT; | |
2679 | goto out; | |
2680 | } | |
2681 | *len = strlen(buf)+1; | |
2682 | } | |
2683 | break; | |
2684 | ||
2685 | case IP_VS_SO_GET_INFO: | |
2686 | { | |
2687 | struct ip_vs_getinfo info; | |
2688 | info.version = IP_VS_VERSION_CODE; | |
6f7edb48 | 2689 | info.size = ip_vs_conn_tab_size; |
a0840e2e | 2690 | info.num_services = ipvs->num_services; |
1da177e4 LT |
2691 | if (copy_to_user(user, &info, sizeof(info)) != 0) |
2692 | ret = -EFAULT; | |
2693 | } | |
2694 | break; | |
2695 | ||
2696 | case IP_VS_SO_GET_SERVICES: | |
2697 | { | |
2698 | struct ip_vs_get_services *get; | |
2699 | int size; | |
2700 | ||
2701 | get = (struct ip_vs_get_services *)arg; | |
2702 | size = sizeof(*get) + | |
2703 | sizeof(struct ip_vs_service_entry) * get->num_services; | |
2704 | if (*len != size) { | |
1e3e238e | 2705 | pr_err("length: %u != %u\n", *len, size); |
1da177e4 LT |
2706 | ret = -EINVAL; |
2707 | goto out; | |
2708 | } | |
fc723250 | 2709 | ret = __ip_vs_get_service_entries(net, get, user); |
1da177e4 LT |
2710 | } |
2711 | break; | |
2712 | ||
2713 | case IP_VS_SO_GET_SERVICE: | |
2714 | { | |
2715 | struct ip_vs_service_entry *entry; | |
2716 | struct ip_vs_service *svc; | |
b18610de | 2717 | union nf_inet_addr addr; |
1da177e4 LT |
2718 | |
2719 | entry = (struct ip_vs_service_entry *)arg; | |
b18610de | 2720 | addr.ip = entry->addr; |
ceec4c38 | 2721 | rcu_read_lock(); |
1da177e4 | 2722 | if (entry->fwmark) |
fc723250 | 2723 | svc = __ip_vs_svc_fwm_find(net, AF_INET, entry->fwmark); |
1da177e4 | 2724 | else |
fc723250 HS |
2725 | svc = __ip_vs_service_find(net, AF_INET, |
2726 | entry->protocol, &addr, | |
2727 | entry->port); | |
ceec4c38 | 2728 | rcu_read_unlock(); |
1da177e4 LT |
2729 | if (svc) { |
2730 | ip_vs_copy_service(entry, svc); | |
2731 | if (copy_to_user(user, entry, sizeof(*entry)) != 0) | |
2732 | ret = -EFAULT; | |
1da177e4 LT |
2733 | } else |
2734 | ret = -ESRCH; | |
2735 | } | |
2736 | break; | |
2737 | ||
2738 | case IP_VS_SO_GET_DESTS: | |
2739 | { | |
2740 | struct ip_vs_get_dests *get; | |
2741 | int size; | |
2742 | ||
2743 | get = (struct ip_vs_get_dests *)arg; | |
2744 | size = sizeof(*get) + | |
2745 | sizeof(struct ip_vs_dest_entry) * get->num_dests; | |
2746 | if (*len != size) { | |
1e3e238e | 2747 | pr_err("length: %u != %u\n", *len, size); |
1da177e4 LT |
2748 | ret = -EINVAL; |
2749 | goto out; | |
2750 | } | |
fc723250 | 2751 | ret = __ip_vs_get_dest_entries(net, get, user); |
1da177e4 LT |
2752 | } |
2753 | break; | |
2754 | ||
2755 | case IP_VS_SO_GET_TIMEOUT: | |
2756 | { | |
2757 | struct ip_vs_timeout_user t; | |
2758 | ||
9330419d | 2759 | __ip_vs_get_timeouts(net, &t); |
1da177e4 LT |
2760 | if (copy_to_user(user, &t, sizeof(t)) != 0) |
2761 | ret = -EFAULT; | |
2762 | } | |
2763 | break; | |
2764 | ||
1da177e4 LT |
2765 | default: |
2766 | ret = -EINVAL; | |
2767 | } | |
2768 | ||
552ad65a | 2769 | out: |
14cc3e2b | 2770 | mutex_unlock(&__ip_vs_mutex); |
1da177e4 LT |
2771 | return ret; |
2772 | } | |
2773 | ||
2774 | ||
2775 | static struct nf_sockopt_ops ip_vs_sockopts = { | |
2776 | .pf = PF_INET, | |
2777 | .set_optmin = IP_VS_BASE_CTL, | |
2778 | .set_optmax = IP_VS_SO_SET_MAX+1, | |
2779 | .set = do_ip_vs_set_ctl, | |
2780 | .get_optmin = IP_VS_BASE_CTL, | |
2781 | .get_optmax = IP_VS_SO_GET_MAX+1, | |
2782 | .get = do_ip_vs_get_ctl, | |
16fcec35 | 2783 | .owner = THIS_MODULE, |
1da177e4 LT |
2784 | }; |
2785 | ||
9a812198 JV |
2786 | /* |
2787 | * Generic Netlink interface | |
2788 | */ | |
2789 | ||
2790 | /* IPVS genetlink family */ | |
2791 | static struct genl_family ip_vs_genl_family = { | |
2792 | .id = GENL_ID_GENERATE, | |
2793 | .hdrsize = 0, | |
2794 | .name = IPVS_GENL_NAME, | |
2795 | .version = IPVS_GENL_VERSION, | |
2796 | .maxattr = IPVS_CMD_MAX, | |
c6d2d445 | 2797 | .netnsok = true, /* Make ipvsadm to work on netns */ |
9a812198 JV |
2798 | }; |
2799 | ||
2800 | /* Policy used for first-level command attributes */ | |
2801 | static const struct nla_policy ip_vs_cmd_policy[IPVS_CMD_ATTR_MAX + 1] = { | |
2802 | [IPVS_CMD_ATTR_SERVICE] = { .type = NLA_NESTED }, | |
2803 | [IPVS_CMD_ATTR_DEST] = { .type = NLA_NESTED }, | |
2804 | [IPVS_CMD_ATTR_DAEMON] = { .type = NLA_NESTED }, | |
2805 | [IPVS_CMD_ATTR_TIMEOUT_TCP] = { .type = NLA_U32 }, | |
2806 | [IPVS_CMD_ATTR_TIMEOUT_TCP_FIN] = { .type = NLA_U32 }, | |
2807 | [IPVS_CMD_ATTR_TIMEOUT_UDP] = { .type = NLA_U32 }, | |
2808 | }; | |
2809 | ||
2810 | /* Policy used for attributes in nested attribute IPVS_CMD_ATTR_DAEMON */ | |
2811 | static const struct nla_policy ip_vs_daemon_policy[IPVS_DAEMON_ATTR_MAX + 1] = { | |
2812 | [IPVS_DAEMON_ATTR_STATE] = { .type = NLA_U32 }, | |
2813 | [IPVS_DAEMON_ATTR_MCAST_IFN] = { .type = NLA_NUL_STRING, | |
2814 | .len = IP_VS_IFNAME_MAXLEN }, | |
2815 | [IPVS_DAEMON_ATTR_SYNC_ID] = { .type = NLA_U32 }, | |
2816 | }; | |
2817 | ||
2818 | /* Policy used for attributes in nested attribute IPVS_CMD_ATTR_SERVICE */ | |
2819 | static const struct nla_policy ip_vs_svc_policy[IPVS_SVC_ATTR_MAX + 1] = { | |
2820 | [IPVS_SVC_ATTR_AF] = { .type = NLA_U16 }, | |
2821 | [IPVS_SVC_ATTR_PROTOCOL] = { .type = NLA_U16 }, | |
2822 | [IPVS_SVC_ATTR_ADDR] = { .type = NLA_BINARY, | |
2823 | .len = sizeof(union nf_inet_addr) }, | |
2824 | [IPVS_SVC_ATTR_PORT] = { .type = NLA_U16 }, | |
2825 | [IPVS_SVC_ATTR_FWMARK] = { .type = NLA_U32 }, | |
2826 | [IPVS_SVC_ATTR_SCHED_NAME] = { .type = NLA_NUL_STRING, | |
2827 | .len = IP_VS_SCHEDNAME_MAXLEN }, | |
0d1e71b0 SH |
2828 | [IPVS_SVC_ATTR_PE_NAME] = { .type = NLA_NUL_STRING, |
2829 | .len = IP_VS_PENAME_MAXLEN }, | |
9a812198 JV |
2830 | [IPVS_SVC_ATTR_FLAGS] = { .type = NLA_BINARY, |
2831 | .len = sizeof(struct ip_vs_flags) }, | |
2832 | [IPVS_SVC_ATTR_TIMEOUT] = { .type = NLA_U32 }, | |
2833 | [IPVS_SVC_ATTR_NETMASK] = { .type = NLA_U32 }, | |
2834 | [IPVS_SVC_ATTR_STATS] = { .type = NLA_NESTED }, | |
2835 | }; | |
2836 | ||
2837 | /* Policy used for attributes in nested attribute IPVS_CMD_ATTR_DEST */ | |
2838 | static const struct nla_policy ip_vs_dest_policy[IPVS_DEST_ATTR_MAX + 1] = { | |
2839 | [IPVS_DEST_ATTR_ADDR] = { .type = NLA_BINARY, | |
2840 | .len = sizeof(union nf_inet_addr) }, | |
2841 | [IPVS_DEST_ATTR_PORT] = { .type = NLA_U16 }, | |
2842 | [IPVS_DEST_ATTR_FWD_METHOD] = { .type = NLA_U32 }, | |
2843 | [IPVS_DEST_ATTR_WEIGHT] = { .type = NLA_U32 }, | |
2844 | [IPVS_DEST_ATTR_U_THRESH] = { .type = NLA_U32 }, | |
2845 | [IPVS_DEST_ATTR_L_THRESH] = { .type = NLA_U32 }, | |
2846 | [IPVS_DEST_ATTR_ACTIVE_CONNS] = { .type = NLA_U32 }, | |
2847 | [IPVS_DEST_ATTR_INACT_CONNS] = { .type = NLA_U32 }, | |
2848 | [IPVS_DEST_ATTR_PERSIST_CONNS] = { .type = NLA_U32 }, | |
2849 | [IPVS_DEST_ATTR_STATS] = { .type = NLA_NESTED }, | |
2850 | }; | |
2851 | ||
2852 | static int ip_vs_genl_fill_stats(struct sk_buff *skb, int container_type, | |
2853 | struct ip_vs_stats *stats) | |
2854 | { | |
55a3d4e1 | 2855 | struct ip_vs_stats_user ustats; |
9a812198 JV |
2856 | struct nlattr *nl_stats = nla_nest_start(skb, container_type); |
2857 | if (!nl_stats) | |
2858 | return -EMSGSIZE; | |
2859 | ||
55a3d4e1 | 2860 | ip_vs_copy_stats(&ustats, stats); |
9a812198 | 2861 | |
969e8e25 DM |
2862 | if (nla_put_u32(skb, IPVS_STATS_ATTR_CONNS, ustats.conns) || |
2863 | nla_put_u32(skb, IPVS_STATS_ATTR_INPKTS, ustats.inpkts) || | |
2864 | nla_put_u32(skb, IPVS_STATS_ATTR_OUTPKTS, ustats.outpkts) || | |
2865 | nla_put_u64(skb, IPVS_STATS_ATTR_INBYTES, ustats.inbytes) || | |
2866 | nla_put_u64(skb, IPVS_STATS_ATTR_OUTBYTES, ustats.outbytes) || | |
2867 | nla_put_u32(skb, IPVS_STATS_ATTR_CPS, ustats.cps) || | |
2868 | nla_put_u32(skb, IPVS_STATS_ATTR_INPPS, ustats.inpps) || | |
2869 | nla_put_u32(skb, IPVS_STATS_ATTR_OUTPPS, ustats.outpps) || | |
2870 | nla_put_u32(skb, IPVS_STATS_ATTR_INBPS, ustats.inbps) || | |
2871 | nla_put_u32(skb, IPVS_STATS_ATTR_OUTBPS, ustats.outbps)) | |
2872 | goto nla_put_failure; | |
9a812198 JV |
2873 | nla_nest_end(skb, nl_stats); |
2874 | ||
2875 | return 0; | |
2876 | ||
2877 | nla_put_failure: | |
9a812198 JV |
2878 | nla_nest_cancel(skb, nl_stats); |
2879 | return -EMSGSIZE; | |
2880 | } | |
2881 | ||
2882 | static int ip_vs_genl_fill_service(struct sk_buff *skb, | |
2883 | struct ip_vs_service *svc) | |
2884 | { | |
ceec4c38 | 2885 | struct ip_vs_scheduler *sched; |
371990ee | 2886 | struct ip_vs_pe *pe; |
9a812198 JV |
2887 | struct nlattr *nl_service; |
2888 | struct ip_vs_flags flags = { .flags = svc->flags, | |
2889 | .mask = ~0 }; | |
2890 | ||
2891 | nl_service = nla_nest_start(skb, IPVS_CMD_ATTR_SERVICE); | |
2892 | if (!nl_service) | |
2893 | return -EMSGSIZE; | |
2894 | ||
969e8e25 DM |
2895 | if (nla_put_u16(skb, IPVS_SVC_ATTR_AF, svc->af)) |
2896 | goto nla_put_failure; | |
9a812198 | 2897 | if (svc->fwmark) { |
969e8e25 DM |
2898 | if (nla_put_u32(skb, IPVS_SVC_ATTR_FWMARK, svc->fwmark)) |
2899 | goto nla_put_failure; | |
9a812198 | 2900 | } else { |
969e8e25 DM |
2901 | if (nla_put_u16(skb, IPVS_SVC_ATTR_PROTOCOL, svc->protocol) || |
2902 | nla_put(skb, IPVS_SVC_ATTR_ADDR, sizeof(svc->addr), &svc->addr) || | |
0a925864 | 2903 | nla_put_be16(skb, IPVS_SVC_ATTR_PORT, svc->port)) |
969e8e25 | 2904 | goto nla_put_failure; |
9a812198 JV |
2905 | } |
2906 | ||
ceec4c38 | 2907 | sched = rcu_dereference_protected(svc->scheduler, 1); |
371990ee | 2908 | pe = rcu_dereference_protected(svc->pe, 1); |
ceec4c38 | 2909 | if (nla_put_string(skb, IPVS_SVC_ATTR_SCHED_NAME, sched->name) || |
371990ee | 2910 | (pe && nla_put_string(skb, IPVS_SVC_ATTR_PE_NAME, pe->name)) || |
969e8e25 DM |
2911 | nla_put(skb, IPVS_SVC_ATTR_FLAGS, sizeof(flags), &flags) || |
2912 | nla_put_u32(skb, IPVS_SVC_ATTR_TIMEOUT, svc->timeout / HZ) || | |
0a925864 | 2913 | nla_put_be32(skb, IPVS_SVC_ATTR_NETMASK, svc->netmask)) |
969e8e25 | 2914 | goto nla_put_failure; |
9a812198 JV |
2915 | if (ip_vs_genl_fill_stats(skb, IPVS_SVC_ATTR_STATS, &svc->stats)) |
2916 | goto nla_put_failure; | |
2917 | ||
2918 | nla_nest_end(skb, nl_service); | |
2919 | ||
2920 | return 0; | |
2921 | ||
2922 | nla_put_failure: | |
2923 | nla_nest_cancel(skb, nl_service); | |
2924 | return -EMSGSIZE; | |
2925 | } | |
2926 | ||
2927 | static int ip_vs_genl_dump_service(struct sk_buff *skb, | |
2928 | struct ip_vs_service *svc, | |
2929 | struct netlink_callback *cb) | |
2930 | { | |
2931 | void *hdr; | |
2932 | ||
15e47304 | 2933 | hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, |
9a812198 JV |
2934 | &ip_vs_genl_family, NLM_F_MULTI, |
2935 | IPVS_CMD_NEW_SERVICE); | |
2936 | if (!hdr) | |
2937 | return -EMSGSIZE; | |
2938 | ||
2939 | if (ip_vs_genl_fill_service(skb, svc) < 0) | |
2940 | goto nla_put_failure; | |
2941 | ||
2942 | return genlmsg_end(skb, hdr); | |
2943 | ||
2944 | nla_put_failure: | |
2945 | genlmsg_cancel(skb, hdr); | |
2946 | return -EMSGSIZE; | |
2947 | } | |
2948 | ||
2949 | static int ip_vs_genl_dump_services(struct sk_buff *skb, | |
2950 | struct netlink_callback *cb) | |
2951 | { | |
2952 | int idx = 0, i; | |
2953 | int start = cb->args[0]; | |
2954 | struct ip_vs_service *svc; | |
fc723250 | 2955 | struct net *net = skb_sknet(skb); |
9a812198 JV |
2956 | |
2957 | mutex_lock(&__ip_vs_mutex); | |
2958 | for (i = 0; i < IP_VS_SVC_TAB_SIZE; i++) { | |
ceec4c38 | 2959 | hlist_for_each_entry(svc, &ip_vs_svc_table[i], s_list) { |
fc723250 | 2960 | if (++idx <= start || !net_eq(svc->net, net)) |
9a812198 JV |
2961 | continue; |
2962 | if (ip_vs_genl_dump_service(skb, svc, cb) < 0) { | |
2963 | idx--; | |
2964 | goto nla_put_failure; | |
2965 | } | |
2966 | } | |
2967 | } | |
2968 | ||
2969 | for (i = 0; i < IP_VS_SVC_TAB_SIZE; i++) { | |
ceec4c38 | 2970 | hlist_for_each_entry(svc, &ip_vs_svc_fwm_table[i], f_list) { |
fc723250 | 2971 | if (++idx <= start || !net_eq(svc->net, net)) |
9a812198 JV |
2972 | continue; |
2973 | if (ip_vs_genl_dump_service(skb, svc, cb) < 0) { | |
2974 | idx--; | |
2975 | goto nla_put_failure; | |
2976 | } | |
2977 | } | |
2978 | } | |
2979 | ||
2980 | nla_put_failure: | |
2981 | mutex_unlock(&__ip_vs_mutex); | |
2982 | cb->args[0] = idx; | |
2983 | ||
2984 | return skb->len; | |
2985 | } | |
2986 | ||
fc723250 HS |
2987 | static int ip_vs_genl_parse_service(struct net *net, |
2988 | struct ip_vs_service_user_kern *usvc, | |
26c15cfd JA |
2989 | struct nlattr *nla, int full_entry, |
2990 | struct ip_vs_service **ret_svc) | |
9a812198 JV |
2991 | { |
2992 | struct nlattr *attrs[IPVS_SVC_ATTR_MAX + 1]; | |
2993 | struct nlattr *nla_af, *nla_port, *nla_fwmark, *nla_protocol, *nla_addr; | |
26c15cfd | 2994 | struct ip_vs_service *svc; |
9a812198 JV |
2995 | |
2996 | /* Parse mandatory identifying service fields first */ | |
2997 | if (nla == NULL || | |
2998 | nla_parse_nested(attrs, IPVS_SVC_ATTR_MAX, nla, ip_vs_svc_policy)) | |
2999 | return -EINVAL; | |
3000 | ||
3001 | nla_af = attrs[IPVS_SVC_ATTR_AF]; | |
3002 | nla_protocol = attrs[IPVS_SVC_ATTR_PROTOCOL]; | |
3003 | nla_addr = attrs[IPVS_SVC_ATTR_ADDR]; | |
3004 | nla_port = attrs[IPVS_SVC_ATTR_PORT]; | |
3005 | nla_fwmark = attrs[IPVS_SVC_ATTR_FWMARK]; | |
3006 | ||
3007 | if (!(nla_af && (nla_fwmark || (nla_port && nla_protocol && nla_addr)))) | |
3008 | return -EINVAL; | |
3009 | ||
258c8893 SH |
3010 | memset(usvc, 0, sizeof(*usvc)); |
3011 | ||
c860c6b1 | 3012 | usvc->af = nla_get_u16(nla_af); |
f94fd041 JV |
3013 | #ifdef CONFIG_IP_VS_IPV6 |
3014 | if (usvc->af != AF_INET && usvc->af != AF_INET6) | |
3015 | #else | |
3016 | if (usvc->af != AF_INET) | |
3017 | #endif | |
9a812198 JV |
3018 | return -EAFNOSUPPORT; |
3019 | ||
3020 | if (nla_fwmark) { | |
3021 | usvc->protocol = IPPROTO_TCP; | |
3022 | usvc->fwmark = nla_get_u32(nla_fwmark); | |
3023 | } else { | |
3024 | usvc->protocol = nla_get_u16(nla_protocol); | |
3025 | nla_memcpy(&usvc->addr, nla_addr, sizeof(usvc->addr)); | |
0a925864 | 3026 | usvc->port = nla_get_be16(nla_port); |
9a812198 JV |
3027 | usvc->fwmark = 0; |
3028 | } | |
3029 | ||
ceec4c38 | 3030 | rcu_read_lock(); |
26c15cfd | 3031 | if (usvc->fwmark) |
fc723250 | 3032 | svc = __ip_vs_svc_fwm_find(net, usvc->af, usvc->fwmark); |
26c15cfd | 3033 | else |
fc723250 | 3034 | svc = __ip_vs_service_find(net, usvc->af, usvc->protocol, |
26c15cfd | 3035 | &usvc->addr, usvc->port); |
ceec4c38 | 3036 | rcu_read_unlock(); |
26c15cfd JA |
3037 | *ret_svc = svc; |
3038 | ||
9a812198 JV |
3039 | /* If a full entry was requested, check for the additional fields */ |
3040 | if (full_entry) { | |
0d1e71b0 | 3041 | struct nlattr *nla_sched, *nla_flags, *nla_pe, *nla_timeout, |
9a812198 JV |
3042 | *nla_netmask; |
3043 | struct ip_vs_flags flags; | |
9a812198 JV |
3044 | |
3045 | nla_sched = attrs[IPVS_SVC_ATTR_SCHED_NAME]; | |
0d1e71b0 | 3046 | nla_pe = attrs[IPVS_SVC_ATTR_PE_NAME]; |
9a812198 JV |
3047 | nla_flags = attrs[IPVS_SVC_ATTR_FLAGS]; |
3048 | nla_timeout = attrs[IPVS_SVC_ATTR_TIMEOUT]; | |
3049 | nla_netmask = attrs[IPVS_SVC_ATTR_NETMASK]; | |
3050 | ||
3051 | if (!(nla_sched && nla_flags && nla_timeout && nla_netmask)) | |
3052 | return -EINVAL; | |
3053 | ||
3054 | nla_memcpy(&flags, nla_flags, sizeof(flags)); | |
3055 | ||
3056 | /* prefill flags from service if it already exists */ | |
26c15cfd | 3057 | if (svc) |
9a812198 | 3058 | usvc->flags = svc->flags; |
9a812198 JV |
3059 | |
3060 | /* set new flags from userland */ | |
3061 | usvc->flags = (usvc->flags & ~flags.mask) | | |
3062 | (flags.flags & flags.mask); | |
c860c6b1 | 3063 | usvc->sched_name = nla_data(nla_sched); |
0d1e71b0 | 3064 | usvc->pe_name = nla_pe ? nla_data(nla_pe) : NULL; |
9a812198 | 3065 | usvc->timeout = nla_get_u32(nla_timeout); |
0a925864 | 3066 | usvc->netmask = nla_get_be32(nla_netmask); |
9a812198 JV |
3067 | } |
3068 | ||
3069 | return 0; | |
3070 | } | |
3071 | ||
fc723250 HS |
3072 | static struct ip_vs_service *ip_vs_genl_find_service(struct net *net, |
3073 | struct nlattr *nla) | |
9a812198 | 3074 | { |
c860c6b1 | 3075 | struct ip_vs_service_user_kern usvc; |
26c15cfd | 3076 | struct ip_vs_service *svc; |
9a812198 JV |
3077 | int ret; |
3078 | ||
fc723250 | 3079 | ret = ip_vs_genl_parse_service(net, &usvc, nla, 0, &svc); |
26c15cfd | 3080 | return ret ? ERR_PTR(ret) : svc; |
9a812198 JV |
3081 | } |
3082 | ||
3083 | static int ip_vs_genl_fill_dest(struct sk_buff *skb, struct ip_vs_dest *dest) | |
3084 | { | |
3085 | struct nlattr *nl_dest; | |
3086 | ||
3087 | nl_dest = nla_nest_start(skb, IPVS_CMD_ATTR_DEST); | |
3088 | if (!nl_dest) | |
3089 | return -EMSGSIZE; | |
3090 | ||
969e8e25 | 3091 | if (nla_put(skb, IPVS_DEST_ATTR_ADDR, sizeof(dest->addr), &dest->addr) || |
0a925864 | 3092 | nla_put_be16(skb, IPVS_DEST_ATTR_PORT, dest->port) || |
969e8e25 DM |
3093 | nla_put_u32(skb, IPVS_DEST_ATTR_FWD_METHOD, |
3094 | (atomic_read(&dest->conn_flags) & | |
3095 | IP_VS_CONN_F_FWD_MASK)) || | |
3096 | nla_put_u32(skb, IPVS_DEST_ATTR_WEIGHT, | |
3097 | atomic_read(&dest->weight)) || | |
3098 | nla_put_u32(skb, IPVS_DEST_ATTR_U_THRESH, dest->u_threshold) || | |
3099 | nla_put_u32(skb, IPVS_DEST_ATTR_L_THRESH, dest->l_threshold) || | |
3100 | nla_put_u32(skb, IPVS_DEST_ATTR_ACTIVE_CONNS, | |
3101 | atomic_read(&dest->activeconns)) || | |
3102 | nla_put_u32(skb, IPVS_DEST_ATTR_INACT_CONNS, | |
3103 | atomic_read(&dest->inactconns)) || | |
3104 | nla_put_u32(skb, IPVS_DEST_ATTR_PERSIST_CONNS, | |
3105 | atomic_read(&dest->persistconns))) | |
3106 | goto nla_put_failure; | |
9a812198 JV |
3107 | if (ip_vs_genl_fill_stats(skb, IPVS_DEST_ATTR_STATS, &dest->stats)) |
3108 | goto nla_put_failure; | |
3109 | ||
3110 | nla_nest_end(skb, nl_dest); | |
3111 | ||
3112 | return 0; | |
3113 | ||
3114 | nla_put_failure: | |
3115 | nla_nest_cancel(skb, nl_dest); | |
3116 | return -EMSGSIZE; | |
3117 | } | |
3118 | ||
3119 | static int ip_vs_genl_dump_dest(struct sk_buff *skb, struct ip_vs_dest *dest, | |
3120 | struct netlink_callback *cb) | |
3121 | { | |
3122 | void *hdr; | |
3123 | ||
15e47304 | 3124 | hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, |
9a812198 JV |
3125 | &ip_vs_genl_family, NLM_F_MULTI, |
3126 | IPVS_CMD_NEW_DEST); | |
3127 | if (!hdr) | |
3128 | return -EMSGSIZE; | |
3129 | ||
3130 | if (ip_vs_genl_fill_dest(skb, dest) < 0) | |
3131 | goto nla_put_failure; | |
3132 | ||
3133 | return genlmsg_end(skb, hdr); | |
3134 | ||
3135 | nla_put_failure: | |
3136 | genlmsg_cancel(skb, hdr); | |
3137 | return -EMSGSIZE; | |
3138 | } | |
3139 | ||
3140 | static int ip_vs_genl_dump_dests(struct sk_buff *skb, | |
3141 | struct netlink_callback *cb) | |
3142 | { | |
3143 | int idx = 0; | |
3144 | int start = cb->args[0]; | |
3145 | struct ip_vs_service *svc; | |
3146 | struct ip_vs_dest *dest; | |
3147 | struct nlattr *attrs[IPVS_CMD_ATTR_MAX + 1]; | |
a0840e2e | 3148 | struct net *net = skb_sknet(skb); |
9a812198 JV |
3149 | |
3150 | mutex_lock(&__ip_vs_mutex); | |
3151 | ||
3152 | /* Try to find the service for which to dump destinations */ | |
3153 | if (nlmsg_parse(cb->nlh, GENL_HDRLEN, attrs, | |
3154 | IPVS_CMD_ATTR_MAX, ip_vs_cmd_policy)) | |
3155 | goto out_err; | |
3156 | ||
a0840e2e | 3157 | |
fc723250 | 3158 | svc = ip_vs_genl_find_service(net, attrs[IPVS_CMD_ATTR_SERVICE]); |
9a812198 JV |
3159 | if (IS_ERR(svc) || svc == NULL) |
3160 | goto out_err; | |
3161 | ||
3162 | /* Dump the destinations */ | |
3163 | list_for_each_entry(dest, &svc->destinations, n_list) { | |
3164 | if (++idx <= start) | |
3165 | continue; | |
3166 | if (ip_vs_genl_dump_dest(skb, dest, cb) < 0) { | |
3167 | idx--; | |
3168 | goto nla_put_failure; | |
3169 | } | |
3170 | } | |
3171 | ||
3172 | nla_put_failure: | |
3173 | cb->args[0] = idx; | |
9a812198 JV |
3174 | |
3175 | out_err: | |
3176 | mutex_unlock(&__ip_vs_mutex); | |
3177 | ||
3178 | return skb->len; | |
3179 | } | |
3180 | ||
c860c6b1 | 3181 | static int ip_vs_genl_parse_dest(struct ip_vs_dest_user_kern *udest, |
9a812198 JV |
3182 | struct nlattr *nla, int full_entry) |
3183 | { | |
3184 | struct nlattr *attrs[IPVS_DEST_ATTR_MAX + 1]; | |
3185 | struct nlattr *nla_addr, *nla_port; | |
3186 | ||
3187 | /* Parse mandatory identifying destination fields first */ | |
3188 | if (nla == NULL || | |
3189 | nla_parse_nested(attrs, IPVS_DEST_ATTR_MAX, nla, ip_vs_dest_policy)) | |
3190 | return -EINVAL; | |
3191 | ||
3192 | nla_addr = attrs[IPVS_DEST_ATTR_ADDR]; | |
3193 | nla_port = attrs[IPVS_DEST_ATTR_PORT]; | |
3194 | ||
3195 | if (!(nla_addr && nla_port)) | |
3196 | return -EINVAL; | |
3197 | ||
258c8893 SH |
3198 | memset(udest, 0, sizeof(*udest)); |
3199 | ||
9a812198 | 3200 | nla_memcpy(&udest->addr, nla_addr, sizeof(udest->addr)); |
0a925864 | 3201 | udest->port = nla_get_be16(nla_port); |
9a812198 JV |
3202 | |
3203 | /* If a full entry was requested, check for the additional fields */ | |
3204 | if (full_entry) { | |
3205 | struct nlattr *nla_fwd, *nla_weight, *nla_u_thresh, | |
3206 | *nla_l_thresh; | |
3207 | ||
3208 | nla_fwd = attrs[IPVS_DEST_ATTR_FWD_METHOD]; | |
3209 | nla_weight = attrs[IPVS_DEST_ATTR_WEIGHT]; | |
3210 | nla_u_thresh = attrs[IPVS_DEST_ATTR_U_THRESH]; | |
3211 | nla_l_thresh = attrs[IPVS_DEST_ATTR_L_THRESH]; | |
3212 | ||
3213 | if (!(nla_fwd && nla_weight && nla_u_thresh && nla_l_thresh)) | |
3214 | return -EINVAL; | |
3215 | ||
3216 | udest->conn_flags = nla_get_u32(nla_fwd) | |
3217 | & IP_VS_CONN_F_FWD_MASK; | |
3218 | udest->weight = nla_get_u32(nla_weight); | |
3219 | udest->u_threshold = nla_get_u32(nla_u_thresh); | |
3220 | udest->l_threshold = nla_get_u32(nla_l_thresh); | |
3221 | } | |
3222 | ||
3223 | return 0; | |
3224 | } | |
3225 | ||
0a925864 JA |
3226 | static int ip_vs_genl_fill_daemon(struct sk_buff *skb, __u32 state, |
3227 | const char *mcast_ifn, __u32 syncid) | |
9a812198 JV |
3228 | { |
3229 | struct nlattr *nl_daemon; | |
3230 | ||
3231 | nl_daemon = nla_nest_start(skb, IPVS_CMD_ATTR_DAEMON); | |
3232 | if (!nl_daemon) | |
3233 | return -EMSGSIZE; | |
3234 | ||
969e8e25 DM |
3235 | if (nla_put_u32(skb, IPVS_DAEMON_ATTR_STATE, state) || |
3236 | nla_put_string(skb, IPVS_DAEMON_ATTR_MCAST_IFN, mcast_ifn) || | |
3237 | nla_put_u32(skb, IPVS_DAEMON_ATTR_SYNC_ID, syncid)) | |
3238 | goto nla_put_failure; | |
9a812198 JV |
3239 | nla_nest_end(skb, nl_daemon); |
3240 | ||
3241 | return 0; | |
3242 | ||
3243 | nla_put_failure: | |
3244 | nla_nest_cancel(skb, nl_daemon); | |
3245 | return -EMSGSIZE; | |
3246 | } | |
3247 | ||
0a925864 JA |
3248 | static int ip_vs_genl_dump_daemon(struct sk_buff *skb, __u32 state, |
3249 | const char *mcast_ifn, __u32 syncid, | |
9a812198 JV |
3250 | struct netlink_callback *cb) |
3251 | { | |
3252 | void *hdr; | |
15e47304 | 3253 | hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, |
9a812198 JV |
3254 | &ip_vs_genl_family, NLM_F_MULTI, |
3255 | IPVS_CMD_NEW_DAEMON); | |
3256 | if (!hdr) | |
3257 | return -EMSGSIZE; | |
3258 | ||
3259 | if (ip_vs_genl_fill_daemon(skb, state, mcast_ifn, syncid)) | |
3260 | goto nla_put_failure; | |
3261 | ||
3262 | return genlmsg_end(skb, hdr); | |
3263 | ||
3264 | nla_put_failure: | |
3265 | genlmsg_cancel(skb, hdr); | |
3266 | return -EMSGSIZE; | |
3267 | } | |
3268 | ||
3269 | static int ip_vs_genl_dump_daemons(struct sk_buff *skb, | |
3270 | struct netlink_callback *cb) | |
3271 | { | |
a09d1977 | 3272 | struct net *net = skb_sknet(skb); |
f131315f HS |
3273 | struct netns_ipvs *ipvs = net_ipvs(net); |
3274 | ||
ae1d48b2 | 3275 | mutex_lock(&ipvs->sync_mutex); |
f131315f | 3276 | if ((ipvs->sync_state & IP_VS_STATE_MASTER) && !cb->args[0]) { |
9a812198 | 3277 | if (ip_vs_genl_dump_daemon(skb, IP_VS_STATE_MASTER, |
f131315f HS |
3278 | ipvs->master_mcast_ifn, |
3279 | ipvs->master_syncid, cb) < 0) | |
9a812198 JV |
3280 | goto nla_put_failure; |
3281 | ||
3282 | cb->args[0] = 1; | |
3283 | } | |
3284 | ||
f131315f | 3285 | if ((ipvs->sync_state & IP_VS_STATE_BACKUP) && !cb->args[1]) { |
9a812198 | 3286 | if (ip_vs_genl_dump_daemon(skb, IP_VS_STATE_BACKUP, |
f131315f HS |
3287 | ipvs->backup_mcast_ifn, |
3288 | ipvs->backup_syncid, cb) < 0) | |
9a812198 JV |
3289 | goto nla_put_failure; |
3290 | ||
3291 | cb->args[1] = 1; | |
3292 | } | |
3293 | ||
3294 | nla_put_failure: | |
ae1d48b2 | 3295 | mutex_unlock(&ipvs->sync_mutex); |
9a812198 JV |
3296 | |
3297 | return skb->len; | |
3298 | } | |
3299 | ||
f131315f | 3300 | static int ip_vs_genl_new_daemon(struct net *net, struct nlattr **attrs) |
9a812198 JV |
3301 | { |
3302 | if (!(attrs[IPVS_DAEMON_ATTR_STATE] && | |
3303 | attrs[IPVS_DAEMON_ATTR_MCAST_IFN] && | |
3304 | attrs[IPVS_DAEMON_ATTR_SYNC_ID])) | |
3305 | return -EINVAL; | |
3306 | ||
f131315f HS |
3307 | return start_sync_thread(net, |
3308 | nla_get_u32(attrs[IPVS_DAEMON_ATTR_STATE]), | |
9a812198 JV |
3309 | nla_data(attrs[IPVS_DAEMON_ATTR_MCAST_IFN]), |
3310 | nla_get_u32(attrs[IPVS_DAEMON_ATTR_SYNC_ID])); | |
3311 | } | |
3312 | ||
f131315f | 3313 | static int ip_vs_genl_del_daemon(struct net *net, struct nlattr **attrs) |
9a812198 JV |
3314 | { |
3315 | if (!attrs[IPVS_DAEMON_ATTR_STATE]) | |
3316 | return -EINVAL; | |
3317 | ||
f131315f HS |
3318 | return stop_sync_thread(net, |
3319 | nla_get_u32(attrs[IPVS_DAEMON_ATTR_STATE])); | |
9a812198 JV |
3320 | } |
3321 | ||
9330419d | 3322 | static int ip_vs_genl_set_config(struct net *net, struct nlattr **attrs) |
9a812198 JV |
3323 | { |
3324 | struct ip_vs_timeout_user t; | |
3325 | ||
9330419d | 3326 | __ip_vs_get_timeouts(net, &t); |
9a812198 JV |
3327 | |
3328 | if (attrs[IPVS_CMD_ATTR_TIMEOUT_TCP]) | |
3329 | t.tcp_timeout = nla_get_u32(attrs[IPVS_CMD_ATTR_TIMEOUT_TCP]); | |
3330 | ||
3331 | if (attrs[IPVS_CMD_ATTR_TIMEOUT_TCP_FIN]) | |
3332 | t.tcp_fin_timeout = | |
3333 | nla_get_u32(attrs[IPVS_CMD_ATTR_TIMEOUT_TCP_FIN]); | |
3334 | ||
3335 | if (attrs[IPVS_CMD_ATTR_TIMEOUT_UDP]) | |
3336 | t.udp_timeout = nla_get_u32(attrs[IPVS_CMD_ATTR_TIMEOUT_UDP]); | |
3337 | ||
9330419d | 3338 | return ip_vs_set_timeout(net, &t); |
9a812198 JV |
3339 | } |
3340 | ||
ae1d48b2 | 3341 | static int ip_vs_genl_set_daemon(struct sk_buff *skb, struct genl_info *info) |
9a812198 | 3342 | { |
9a812198 | 3343 | int ret = 0, cmd; |
fc723250 | 3344 | struct net *net; |
a0840e2e | 3345 | struct netns_ipvs *ipvs; |
9a812198 | 3346 | |
fc723250 | 3347 | net = skb_sknet(skb); |
a0840e2e | 3348 | ipvs = net_ipvs(net); |
9a812198 JV |
3349 | cmd = info->genlhdr->cmd; |
3350 | ||
ae1d48b2 | 3351 | if (cmd == IPVS_CMD_NEW_DAEMON || cmd == IPVS_CMD_DEL_DAEMON) { |
9a812198 JV |
3352 | struct nlattr *daemon_attrs[IPVS_DAEMON_ATTR_MAX + 1]; |
3353 | ||
ae1d48b2 | 3354 | mutex_lock(&ipvs->sync_mutex); |
9a812198 JV |
3355 | if (!info->attrs[IPVS_CMD_ATTR_DAEMON] || |
3356 | nla_parse_nested(daemon_attrs, IPVS_DAEMON_ATTR_MAX, | |
3357 | info->attrs[IPVS_CMD_ATTR_DAEMON], | |
3358 | ip_vs_daemon_policy)) { | |
3359 | ret = -EINVAL; | |
3360 | goto out; | |
3361 | } | |
3362 | ||
3363 | if (cmd == IPVS_CMD_NEW_DAEMON) | |
f131315f | 3364 | ret = ip_vs_genl_new_daemon(net, daemon_attrs); |
9a812198 | 3365 | else |
f131315f | 3366 | ret = ip_vs_genl_del_daemon(net, daemon_attrs); |
ae1d48b2 HS |
3367 | out: |
3368 | mutex_unlock(&ipvs->sync_mutex); | |
3369 | } | |
3370 | return ret; | |
3371 | } | |
3372 | ||
3373 | static int ip_vs_genl_set_cmd(struct sk_buff *skb, struct genl_info *info) | |
3374 | { | |
3375 | struct ip_vs_service *svc = NULL; | |
3376 | struct ip_vs_service_user_kern usvc; | |
3377 | struct ip_vs_dest_user_kern udest; | |
3378 | int ret = 0, cmd; | |
3379 | int need_full_svc = 0, need_full_dest = 0; | |
3380 | struct net *net; | |
ae1d48b2 HS |
3381 | |
3382 | net = skb_sknet(skb); | |
ae1d48b2 HS |
3383 | cmd = info->genlhdr->cmd; |
3384 | ||
3385 | mutex_lock(&__ip_vs_mutex); | |
3386 | ||
3387 | if (cmd == IPVS_CMD_FLUSH) { | |
578bc3ef | 3388 | ret = ip_vs_flush(net, false); |
ae1d48b2 HS |
3389 | goto out; |
3390 | } else if (cmd == IPVS_CMD_SET_CONFIG) { | |
3391 | ret = ip_vs_genl_set_config(net, info->attrs); | |
9a812198 JV |
3392 | goto out; |
3393 | } else if (cmd == IPVS_CMD_ZERO && | |
3394 | !info->attrs[IPVS_CMD_ATTR_SERVICE]) { | |
fc723250 | 3395 | ret = ip_vs_zero_all(net); |
9a812198 JV |
3396 | goto out; |
3397 | } | |
3398 | ||
3399 | /* All following commands require a service argument, so check if we | |
3400 | * received a valid one. We need a full service specification when | |
3401 | * adding / editing a service. Only identifying members otherwise. */ | |
3402 | if (cmd == IPVS_CMD_NEW_SERVICE || cmd == IPVS_CMD_SET_SERVICE) | |
3403 | need_full_svc = 1; | |
3404 | ||
fc723250 | 3405 | ret = ip_vs_genl_parse_service(net, &usvc, |
9a812198 | 3406 | info->attrs[IPVS_CMD_ATTR_SERVICE], |
26c15cfd | 3407 | need_full_svc, &svc); |
9a812198 JV |
3408 | if (ret) |
3409 | goto out; | |
3410 | ||
9a812198 JV |
3411 | /* Unless we're adding a new service, the service must already exist */ |
3412 | if ((cmd != IPVS_CMD_NEW_SERVICE) && (svc == NULL)) { | |
3413 | ret = -ESRCH; | |
3414 | goto out; | |
3415 | } | |
3416 | ||
3417 | /* Destination commands require a valid destination argument. For | |
3418 | * adding / editing a destination, we need a full destination | |
3419 | * specification. */ | |
3420 | if (cmd == IPVS_CMD_NEW_DEST || cmd == IPVS_CMD_SET_DEST || | |
3421 | cmd == IPVS_CMD_DEL_DEST) { | |
3422 | if (cmd != IPVS_CMD_DEL_DEST) | |
3423 | need_full_dest = 1; | |
3424 | ||
3425 | ret = ip_vs_genl_parse_dest(&udest, | |
3426 | info->attrs[IPVS_CMD_ATTR_DEST], | |
3427 | need_full_dest); | |
3428 | if (ret) | |
3429 | goto out; | |
3430 | } | |
3431 | ||
3432 | switch (cmd) { | |
3433 | case IPVS_CMD_NEW_SERVICE: | |
3434 | if (svc == NULL) | |
fc723250 | 3435 | ret = ip_vs_add_service(net, &usvc, &svc); |
9a812198 JV |
3436 | else |
3437 | ret = -EEXIST; | |
3438 | break; | |
3439 | case IPVS_CMD_SET_SERVICE: | |
3440 | ret = ip_vs_edit_service(svc, &usvc); | |
3441 | break; | |
3442 | case IPVS_CMD_DEL_SERVICE: | |
3443 | ret = ip_vs_del_service(svc); | |
26c15cfd | 3444 | /* do not use svc, it can be freed */ |
9a812198 JV |
3445 | break; |
3446 | case IPVS_CMD_NEW_DEST: | |
3447 | ret = ip_vs_add_dest(svc, &udest); | |
3448 | break; | |
3449 | case IPVS_CMD_SET_DEST: | |
3450 | ret = ip_vs_edit_dest(svc, &udest); | |
3451 | break; | |
3452 | case IPVS_CMD_DEL_DEST: | |
3453 | ret = ip_vs_del_dest(svc, &udest); | |
3454 | break; | |
3455 | case IPVS_CMD_ZERO: | |
3456 | ret = ip_vs_zero_service(svc); | |
3457 | break; | |
3458 | default: | |
3459 | ret = -EINVAL; | |
3460 | } | |
3461 | ||
3462 | out: | |
9a812198 JV |
3463 | mutex_unlock(&__ip_vs_mutex); |
3464 | ||
3465 | return ret; | |
3466 | } | |
3467 | ||
3468 | static int ip_vs_genl_get_cmd(struct sk_buff *skb, struct genl_info *info) | |
3469 | { | |
3470 | struct sk_buff *msg; | |
3471 | void *reply; | |
3472 | int ret, cmd, reply_cmd; | |
fc723250 | 3473 | struct net *net; |
9a812198 | 3474 | |
fc723250 | 3475 | net = skb_sknet(skb); |
9a812198 JV |
3476 | cmd = info->genlhdr->cmd; |
3477 | ||
3478 | if (cmd == IPVS_CMD_GET_SERVICE) | |
3479 | reply_cmd = IPVS_CMD_NEW_SERVICE; | |
3480 | else if (cmd == IPVS_CMD_GET_INFO) | |
3481 | reply_cmd = IPVS_CMD_SET_INFO; | |
3482 | else if (cmd == IPVS_CMD_GET_CONFIG) | |
3483 | reply_cmd = IPVS_CMD_SET_CONFIG; | |
3484 | else { | |
1e3e238e | 3485 | pr_err("unknown Generic Netlink command\n"); |
9a812198 JV |
3486 | return -EINVAL; |
3487 | } | |
3488 | ||
3489 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
3490 | if (!msg) | |
3491 | return -ENOMEM; | |
3492 | ||
3493 | mutex_lock(&__ip_vs_mutex); | |
3494 | ||
3495 | reply = genlmsg_put_reply(msg, info, &ip_vs_genl_family, 0, reply_cmd); | |
3496 | if (reply == NULL) | |
3497 | goto nla_put_failure; | |
3498 | ||
3499 | switch (cmd) { | |
3500 | case IPVS_CMD_GET_SERVICE: | |
3501 | { | |
3502 | struct ip_vs_service *svc; | |
3503 | ||
fc723250 HS |
3504 | svc = ip_vs_genl_find_service(net, |
3505 | info->attrs[IPVS_CMD_ATTR_SERVICE]); | |
9a812198 JV |
3506 | if (IS_ERR(svc)) { |
3507 | ret = PTR_ERR(svc); | |
3508 | goto out_err; | |
3509 | } else if (svc) { | |
3510 | ret = ip_vs_genl_fill_service(msg, svc); | |
9a812198 JV |
3511 | if (ret) |
3512 | goto nla_put_failure; | |
3513 | } else { | |
3514 | ret = -ESRCH; | |
3515 | goto out_err; | |
3516 | } | |
3517 | ||
3518 | break; | |
3519 | } | |
3520 | ||
3521 | case IPVS_CMD_GET_CONFIG: | |
3522 | { | |
3523 | struct ip_vs_timeout_user t; | |
3524 | ||
9330419d | 3525 | __ip_vs_get_timeouts(net, &t); |
9a812198 | 3526 | #ifdef CONFIG_IP_VS_PROTO_TCP |
969e8e25 DM |
3527 | if (nla_put_u32(msg, IPVS_CMD_ATTR_TIMEOUT_TCP, |
3528 | t.tcp_timeout) || | |
3529 | nla_put_u32(msg, IPVS_CMD_ATTR_TIMEOUT_TCP_FIN, | |
3530 | t.tcp_fin_timeout)) | |
3531 | goto nla_put_failure; | |
9a812198 JV |
3532 | #endif |
3533 | #ifdef CONFIG_IP_VS_PROTO_UDP | |
969e8e25 DM |
3534 | if (nla_put_u32(msg, IPVS_CMD_ATTR_TIMEOUT_UDP, t.udp_timeout)) |
3535 | goto nla_put_failure; | |
9a812198 JV |
3536 | #endif |
3537 | ||
3538 | break; | |
3539 | } | |
3540 | ||
3541 | case IPVS_CMD_GET_INFO: | |
969e8e25 DM |
3542 | if (nla_put_u32(msg, IPVS_INFO_ATTR_VERSION, |
3543 | IP_VS_VERSION_CODE) || | |
3544 | nla_put_u32(msg, IPVS_INFO_ATTR_CONN_TAB_SIZE, | |
3545 | ip_vs_conn_tab_size)) | |
3546 | goto nla_put_failure; | |
9a812198 JV |
3547 | break; |
3548 | } | |
3549 | ||
3550 | genlmsg_end(msg, reply); | |
134e6375 | 3551 | ret = genlmsg_reply(msg, info); |
9a812198 JV |
3552 | goto out; |
3553 | ||
3554 | nla_put_failure: | |
1e3e238e | 3555 | pr_err("not enough space in Netlink message\n"); |
9a812198 JV |
3556 | ret = -EMSGSIZE; |
3557 | ||
3558 | out_err: | |
3559 | nlmsg_free(msg); | |
3560 | out: | |
3561 | mutex_unlock(&__ip_vs_mutex); | |
3562 | ||
3563 | return ret; | |
3564 | } | |
3565 | ||
3566 | ||
3567 | static struct genl_ops ip_vs_genl_ops[] __read_mostly = { | |
3568 | { | |
3569 | .cmd = IPVS_CMD_NEW_SERVICE, | |
3570 | .flags = GENL_ADMIN_PERM, | |
3571 | .policy = ip_vs_cmd_policy, | |
3572 | .doit = ip_vs_genl_set_cmd, | |
3573 | }, | |
3574 | { | |
3575 | .cmd = IPVS_CMD_SET_SERVICE, | |
3576 | .flags = GENL_ADMIN_PERM, | |
3577 | .policy = ip_vs_cmd_policy, | |
3578 | .doit = ip_vs_genl_set_cmd, | |
3579 | }, | |
3580 | { | |
3581 | .cmd = IPVS_CMD_DEL_SERVICE, | |
3582 | .flags = GENL_ADMIN_PERM, | |
3583 | .policy = ip_vs_cmd_policy, | |
3584 | .doit = ip_vs_genl_set_cmd, | |
3585 | }, | |
3586 | { | |
3587 | .cmd = IPVS_CMD_GET_SERVICE, | |
3588 | .flags = GENL_ADMIN_PERM, | |
3589 | .doit = ip_vs_genl_get_cmd, | |
3590 | .dumpit = ip_vs_genl_dump_services, | |
3591 | .policy = ip_vs_cmd_policy, | |
3592 | }, | |
3593 | { | |
3594 | .cmd = IPVS_CMD_NEW_DEST, | |
3595 | .flags = GENL_ADMIN_PERM, | |
3596 | .policy = ip_vs_cmd_policy, | |
3597 | .doit = ip_vs_genl_set_cmd, | |
3598 | }, | |
3599 | { | |
3600 | .cmd = IPVS_CMD_SET_DEST, | |
3601 | .flags = GENL_ADMIN_PERM, | |
3602 | .policy = ip_vs_cmd_policy, | |
3603 | .doit = ip_vs_genl_set_cmd, | |
3604 | }, | |
3605 | { | |
3606 | .cmd = IPVS_CMD_DEL_DEST, | |
3607 | .flags = GENL_ADMIN_PERM, | |
3608 | .policy = ip_vs_cmd_policy, | |
3609 | .doit = ip_vs_genl_set_cmd, | |
3610 | }, | |
3611 | { | |
3612 | .cmd = IPVS_CMD_GET_DEST, | |
3613 | .flags = GENL_ADMIN_PERM, | |
3614 | .policy = ip_vs_cmd_policy, | |
3615 | .dumpit = ip_vs_genl_dump_dests, | |
3616 | }, | |
3617 | { | |
3618 | .cmd = IPVS_CMD_NEW_DAEMON, | |
3619 | .flags = GENL_ADMIN_PERM, | |
3620 | .policy = ip_vs_cmd_policy, | |
ae1d48b2 | 3621 | .doit = ip_vs_genl_set_daemon, |
9a812198 JV |
3622 | }, |
3623 | { | |
3624 | .cmd = IPVS_CMD_DEL_DAEMON, | |
3625 | .flags = GENL_ADMIN_PERM, | |
3626 | .policy = ip_vs_cmd_policy, | |
ae1d48b2 | 3627 | .doit = ip_vs_genl_set_daemon, |
9a812198 JV |
3628 | }, |
3629 | { | |
3630 | .cmd = IPVS_CMD_GET_DAEMON, | |
3631 | .flags = GENL_ADMIN_PERM, | |
3632 | .dumpit = ip_vs_genl_dump_daemons, | |
3633 | }, | |
3634 | { | |
3635 | .cmd = IPVS_CMD_SET_CONFIG, | |
3636 | .flags = GENL_ADMIN_PERM, | |
3637 | .policy = ip_vs_cmd_policy, | |
3638 | .doit = ip_vs_genl_set_cmd, | |
3639 | }, | |
3640 | { | |
3641 | .cmd = IPVS_CMD_GET_CONFIG, | |
3642 | .flags = GENL_ADMIN_PERM, | |
3643 | .doit = ip_vs_genl_get_cmd, | |
3644 | }, | |
3645 | { | |
3646 | .cmd = IPVS_CMD_GET_INFO, | |
3647 | .flags = GENL_ADMIN_PERM, | |
3648 | .doit = ip_vs_genl_get_cmd, | |
3649 | }, | |
3650 | { | |
3651 | .cmd = IPVS_CMD_ZERO, | |
3652 | .flags = GENL_ADMIN_PERM, | |
3653 | .policy = ip_vs_cmd_policy, | |
3654 | .doit = ip_vs_genl_set_cmd, | |
3655 | }, | |
3656 | { | |
3657 | .cmd = IPVS_CMD_FLUSH, | |
3658 | .flags = GENL_ADMIN_PERM, | |
3659 | .doit = ip_vs_genl_set_cmd, | |
3660 | }, | |
3661 | }; | |
3662 | ||
3663 | static int __init ip_vs_genl_register(void) | |
3664 | { | |
8f698d54 MM |
3665 | return genl_register_family_with_ops(&ip_vs_genl_family, |
3666 | ip_vs_genl_ops, ARRAY_SIZE(ip_vs_genl_ops)); | |
9a812198 JV |
3667 | } |
3668 | ||
3669 | static void ip_vs_genl_unregister(void) | |
3670 | { | |
3671 | genl_unregister_family(&ip_vs_genl_family); | |
3672 | } | |
3673 | ||
3674 | /* End of Generic Netlink interface definitions */ | |
3675 | ||
61b1ab45 HS |
3676 | /* |
3677 | * per netns intit/exit func. | |
3678 | */ | |
14e40546 | 3679 | #ifdef CONFIG_SYSCTL |
2b2d2808 | 3680 | static int __net_init ip_vs_control_net_init_sysctl(struct net *net) |
61b1ab45 | 3681 | { |
fc723250 HS |
3682 | int idx; |
3683 | struct netns_ipvs *ipvs = net_ipvs(net); | |
a0840e2e | 3684 | struct ctl_table *tbl; |
fc723250 | 3685 | |
a0840e2e HS |
3686 | atomic_set(&ipvs->dropentry, 0); |
3687 | spin_lock_init(&ipvs->dropentry_lock); | |
3688 | spin_lock_init(&ipvs->droppacket_lock); | |
3689 | spin_lock_init(&ipvs->securetcp_lock); | |
a0840e2e HS |
3690 | |
3691 | if (!net_eq(net, &init_net)) { | |
3692 | tbl = kmemdup(vs_vars, sizeof(vs_vars), GFP_KERNEL); | |
3693 | if (tbl == NULL) | |
14e40546 | 3694 | return -ENOMEM; |
464dc801 EB |
3695 | |
3696 | /* Don't export sysctls to unprivileged users */ | |
3697 | if (net->user_ns != &init_user_ns) | |
3698 | tbl[0].procname = NULL; | |
a0840e2e HS |
3699 | } else |
3700 | tbl = vs_vars; | |
3701 | /* Initialize sysctl defaults */ | |
3702 | idx = 0; | |
3703 | ipvs->sysctl_amemthresh = 1024; | |
3704 | tbl[idx++].data = &ipvs->sysctl_amemthresh; | |
3705 | ipvs->sysctl_am_droprate = 10; | |
3706 | tbl[idx++].data = &ipvs->sysctl_am_droprate; | |
3707 | tbl[idx++].data = &ipvs->sysctl_drop_entry; | |
3708 | tbl[idx++].data = &ipvs->sysctl_drop_packet; | |
3709 | #ifdef CONFIG_IP_VS_NFCT | |
3710 | tbl[idx++].data = &ipvs->sysctl_conntrack; | |
3711 | #endif | |
3712 | tbl[idx++].data = &ipvs->sysctl_secure_tcp; | |
3713 | ipvs->sysctl_snat_reroute = 1; | |
3714 | tbl[idx++].data = &ipvs->sysctl_snat_reroute; | |
3715 | ipvs->sysctl_sync_ver = 1; | |
3716 | tbl[idx++].data = &ipvs->sysctl_sync_ver; | |
f73181c8 PNA |
3717 | ipvs->sysctl_sync_ports = 1; |
3718 | tbl[idx++].data = &ipvs->sysctl_sync_ports; | |
1c003b15 PNA |
3719 | ipvs->sysctl_sync_qlen_max = nr_free_buffer_pages() / 32; |
3720 | tbl[idx++].data = &ipvs->sysctl_sync_qlen_max; | |
3721 | ipvs->sysctl_sync_sock_size = 0; | |
3722 | tbl[idx++].data = &ipvs->sysctl_sync_sock_size; | |
a0840e2e HS |
3723 | tbl[idx++].data = &ipvs->sysctl_cache_bypass; |
3724 | tbl[idx++].data = &ipvs->sysctl_expire_nodest_conn; | |
3725 | tbl[idx++].data = &ipvs->sysctl_expire_quiescent_template; | |
59e0350e SH |
3726 | ipvs->sysctl_sync_threshold[0] = DEFAULT_SYNC_THRESHOLD; |
3727 | ipvs->sysctl_sync_threshold[1] = DEFAULT_SYNC_PERIOD; | |
a0840e2e HS |
3728 | tbl[idx].data = &ipvs->sysctl_sync_threshold; |
3729 | tbl[idx++].maxlen = sizeof(ipvs->sysctl_sync_threshold); | |
749c42b6 JA |
3730 | ipvs->sysctl_sync_refresh_period = DEFAULT_SYNC_REFRESH_PERIOD; |
3731 | tbl[idx++].data = &ipvs->sysctl_sync_refresh_period; | |
3732 | ipvs->sysctl_sync_retries = clamp_t(int, DEFAULT_SYNC_RETRIES, 0, 3); | |
3733 | tbl[idx++].data = &ipvs->sysctl_sync_retries; | |
a0840e2e | 3734 | tbl[idx++].data = &ipvs->sysctl_nat_icmp_send; |
3654e611 JA |
3735 | ipvs->sysctl_pmtu_disc = 1; |
3736 | tbl[idx++].data = &ipvs->sysctl_pmtu_disc; | |
0c12582f | 3737 | tbl[idx++].data = &ipvs->sysctl_backup_only; |
a0840e2e HS |
3738 | |
3739 | ||
ec8f23ce | 3740 | ipvs->sysctl_hdr = register_net_sysctl(net, "net/ipv4/vs", tbl); |
0443929f SH |
3741 | if (ipvs->sysctl_hdr == NULL) { |
3742 | if (!net_eq(net, &init_net)) | |
3743 | kfree(tbl); | |
14e40546 | 3744 | return -ENOMEM; |
0443929f | 3745 | } |
6ef757f9 | 3746 | ip_vs_start_estimator(net, &ipvs->tot_stats); |
a0840e2e | 3747 | ipvs->sysctl_tbl = tbl; |
f6340ee0 HS |
3748 | /* Schedule defense work */ |
3749 | INIT_DELAYED_WORK(&ipvs->defense_work, defense_work_handler); | |
3750 | schedule_delayed_work(&ipvs->defense_work, DEFENSE_TIMER_PERIOD); | |
61b1ab45 | 3751 | |
61b1ab45 | 3752 | return 0; |
61b1ab45 HS |
3753 | } |
3754 | ||
2b2d2808 | 3755 | static void __net_exit ip_vs_control_net_cleanup_sysctl(struct net *net) |
61b1ab45 | 3756 | { |
b17fc996 HS |
3757 | struct netns_ipvs *ipvs = net_ipvs(net); |
3758 | ||
f2431e6e HS |
3759 | cancel_delayed_work_sync(&ipvs->defense_work); |
3760 | cancel_work_sync(&ipvs->defense_work.work); | |
a0840e2e | 3761 | unregister_net_sysctl_table(ipvs->sysctl_hdr); |
14e40546 SH |
3762 | } |
3763 | ||
3764 | #else | |
3765 | ||
2b2d2808 CG |
3766 | static int __net_init ip_vs_control_net_init_sysctl(struct net *net) { return 0; } |
3767 | static void __net_exit ip_vs_control_net_cleanup_sysctl(struct net *net) { } | |
14e40546 | 3768 | |
0443929f | 3769 | #endif |
14e40546 | 3770 | |
7a4f0761 HS |
3771 | static struct notifier_block ip_vs_dst_notifier = { |
3772 | .notifier_call = ip_vs_dst_event, | |
3773 | }; | |
3774 | ||
503cf15a | 3775 | int __net_init ip_vs_control_net_init(struct net *net) |
14e40546 SH |
3776 | { |
3777 | int idx; | |
3778 | struct netns_ipvs *ipvs = net_ipvs(net); | |
3779 | ||
14e40546 SH |
3780 | /* Initialize rs_table */ |
3781 | for (idx = 0; idx < IP_VS_RTAB_SIZE; idx++) | |
276472ea | 3782 | INIT_HLIST_HEAD(&ipvs->rs_table[idx]); |
14e40546 SH |
3783 | |
3784 | INIT_LIST_HEAD(&ipvs->dest_trash); | |
578bc3ef JA |
3785 | spin_lock_init(&ipvs->dest_trash_lock); |
3786 | setup_timer(&ipvs->dest_trash_timer, ip_vs_dest_trash_expire, | |
3787 | (unsigned long) net); | |
14e40546 SH |
3788 | atomic_set(&ipvs->ftpsvc_counter, 0); |
3789 | atomic_set(&ipvs->nullsvc_counter, 0); | |
3790 | ||
3791 | /* procfs stats */ | |
3792 | ipvs->tot_stats.cpustats = alloc_percpu(struct ip_vs_cpu_stats); | |
0a9ee813 | 3793 | if (!ipvs->tot_stats.cpustats) |
14e40546 | 3794 | return -ENOMEM; |
0a9ee813 | 3795 | |
14e40546 SH |
3796 | spin_lock_init(&ipvs->tot_stats.lock); |
3797 | ||
d4beaa66 G |
3798 | proc_create("ip_vs", 0, net->proc_net, &ip_vs_info_fops); |
3799 | proc_create("ip_vs_stats", 0, net->proc_net, &ip_vs_stats_fops); | |
3800 | proc_create("ip_vs_stats_percpu", 0, net->proc_net, | |
3801 | &ip_vs_stats_percpu_fops); | |
14e40546 | 3802 | |
503cf15a | 3803 | if (ip_vs_control_net_init_sysctl(net)) |
14e40546 SH |
3804 | goto err; |
3805 | ||
3806 | return 0; | |
3807 | ||
3808 | err: | |
2a0751af | 3809 | free_percpu(ipvs->tot_stats.cpustats); |
61b1ab45 HS |
3810 | return -ENOMEM; |
3811 | } | |
3812 | ||
503cf15a | 3813 | void __net_exit ip_vs_control_net_cleanup(struct net *net) |
61b1ab45 | 3814 | { |
b17fc996 HS |
3815 | struct netns_ipvs *ipvs = net_ipvs(net); |
3816 | ||
578bc3ef JA |
3817 | /* Some dest can be in grace period even before cleanup, we have to |
3818 | * defer ip_vs_trash_cleanup until ip_vs_dest_wait_readers is called. | |
3819 | */ | |
3820 | rcu_barrier(); | |
f2431e6e | 3821 | ip_vs_trash_cleanup(net); |
6ef757f9 | 3822 | ip_vs_stop_estimator(net, &ipvs->tot_stats); |
503cf15a | 3823 | ip_vs_control_net_cleanup_sysctl(net); |
ece31ffd G |
3824 | remove_proc_entry("ip_vs_stats_percpu", net->proc_net); |
3825 | remove_proc_entry("ip_vs_stats", net->proc_net); | |
3826 | remove_proc_entry("ip_vs", net->proc_net); | |
2a0751af | 3827 | free_percpu(ipvs->tot_stats.cpustats); |
61b1ab45 HS |
3828 | } |
3829 | ||
8537de8a | 3830 | int __init ip_vs_register_nl_ioctl(void) |
1da177e4 | 3831 | { |
fc723250 | 3832 | int ret; |
1da177e4 | 3833 | |
1da177e4 LT |
3834 | ret = nf_register_sockopt(&ip_vs_sockopts); |
3835 | if (ret) { | |
1e3e238e | 3836 | pr_err("cannot register sockopt.\n"); |
7a4f0761 | 3837 | goto err_sock; |
1da177e4 LT |
3838 | } |
3839 | ||
9a812198 JV |
3840 | ret = ip_vs_genl_register(); |
3841 | if (ret) { | |
1e3e238e | 3842 | pr_err("cannot register Generic Netlink interface.\n"); |
7a4f0761 | 3843 | goto err_genl; |
9a812198 | 3844 | } |
1da177e4 | 3845 | return 0; |
fc723250 | 3846 | |
7a4f0761 HS |
3847 | err_genl: |
3848 | nf_unregister_sockopt(&ip_vs_sockopts); | |
3849 | err_sock: | |
fc723250 | 3850 | return ret; |
1da177e4 LT |
3851 | } |
3852 | ||
8537de8a HS |
3853 | void ip_vs_unregister_nl_ioctl(void) |
3854 | { | |
3855 | ip_vs_genl_unregister(); | |
3856 | nf_unregister_sockopt(&ip_vs_sockopts); | |
3857 | } | |
3858 | ||
3859 | int __init ip_vs_control_init(void) | |
3860 | { | |
3861 | int idx; | |
3862 | int ret; | |
3863 | ||
3864 | EnterFunction(2); | |
3865 | ||
276472ea | 3866 | /* Initialize svc_table, ip_vs_svc_fwm_table */ |
8537de8a | 3867 | for (idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { |
ceec4c38 JA |
3868 | INIT_HLIST_HEAD(&ip_vs_svc_table[idx]); |
3869 | INIT_HLIST_HEAD(&ip_vs_svc_fwm_table[idx]); | |
8537de8a HS |
3870 | } |
3871 | ||
3872 | smp_wmb(); /* Do we really need it now ? */ | |
3873 | ||
3874 | ret = register_netdevice_notifier(&ip_vs_dst_notifier); | |
3875 | if (ret < 0) | |
3876 | return ret; | |
3877 | ||
3878 | LeaveFunction(2); | |
3879 | return 0; | |
3880 | } | |
3881 | ||
1da177e4 LT |
3882 | |
3883 | void ip_vs_control_cleanup(void) | |
3884 | { | |
3885 | EnterFunction(2); | |
7676e345 | 3886 | unregister_netdevice_notifier(&ip_vs_dst_notifier); |
1da177e4 LT |
3887 | LeaveFunction(2); |
3888 | } |