Commit | Line | Data |
---|---|---|
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); | |
bcbde4c0 | 463 | rcu_assign_pointer(dest->svc, svc); |
1da177e4 LT |
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 | ||
bcbde4c0 | 473 | static void ip_vs_service_rcu_free(struct rcu_head *head) |
1da177e4 | 474 | { |
bcbde4c0 JA |
475 | struct ip_vs_service *svc; |
476 | ||
477 | svc = container_of(head, struct ip_vs_service, rcu_head); | |
478 | ip_vs_service_free(svc); | |
479 | } | |
1da177e4 | 480 | |
bcbde4c0 JA |
481 | static void __ip_vs_svc_put(struct ip_vs_service *svc, bool do_delay) |
482 | { | |
26c15cfd | 483 | if (atomic_dec_and_test(&svc->refcnt)) { |
ceec4c38 | 484 | IP_VS_DBG_BUF(3, "Removing service %u/%s:%u\n", |
26c15cfd JA |
485 | svc->fwmark, |
486 | IP_VS_DBG_ADDR(svc->af, &svc->addr), | |
ceec4c38 | 487 | ntohs(svc->port)); |
bcbde4c0 JA |
488 | if (do_delay) |
489 | call_rcu(&svc->rcu_head, ip_vs_service_rcu_free); | |
490 | else | |
491 | ip_vs_service_free(svc); | |
26c15cfd | 492 | } |
1da177e4 LT |
493 | } |
494 | ||
495 | ||
496 | /* | |
497 | * Returns hash value for real service | |
498 | */ | |
95c96174 | 499 | static inline unsigned int ip_vs_rs_hashkey(int af, |
7937df15 JV |
500 | const union nf_inet_addr *addr, |
501 | __be16 port) | |
1da177e4 | 502 | { |
95c96174 | 503 | register unsigned int porth = ntohs(port); |
7937df15 JV |
504 | __be32 addr_fold = addr->ip; |
505 | ||
506 | #ifdef CONFIG_IP_VS_IPV6 | |
507 | if (af == AF_INET6) | |
508 | addr_fold = addr->ip6[0]^addr->ip6[1]^ | |
509 | addr->ip6[2]^addr->ip6[3]; | |
510 | #endif | |
1da177e4 | 511 | |
7937df15 | 512 | return (ntohl(addr_fold)^(porth>>IP_VS_RTAB_BITS)^porth) |
1da177e4 LT |
513 | & IP_VS_RTAB_MASK; |
514 | } | |
515 | ||
276472ea JA |
516 | /* Hash ip_vs_dest in rs_table by <proto,addr,port>. */ |
517 | static void ip_vs_rs_hash(struct netns_ipvs *ipvs, struct ip_vs_dest *dest) | |
1da177e4 | 518 | { |
95c96174 | 519 | unsigned int hash; |
1da177e4 | 520 | |
276472ea JA |
521 | if (dest->in_rs_table) |
522 | return; | |
1da177e4 LT |
523 | |
524 | /* | |
525 | * Hash by proto,addr,port, | |
526 | * which are the parameters of the real service. | |
527 | */ | |
7937df15 JV |
528 | hash = ip_vs_rs_hashkey(dest->af, &dest->addr, dest->port); |
529 | ||
276472ea JA |
530 | hlist_add_head_rcu(&dest->d_list, &ipvs->rs_table[hash]); |
531 | dest->in_rs_table = 1; | |
1da177e4 LT |
532 | } |
533 | ||
276472ea JA |
534 | /* Unhash ip_vs_dest from rs_table. */ |
535 | static void ip_vs_rs_unhash(struct ip_vs_dest *dest) | |
1da177e4 LT |
536 | { |
537 | /* | |
fc723250 | 538 | * Remove it from the rs_table table. |
1da177e4 | 539 | */ |
276472ea JA |
540 | if (dest->in_rs_table) { |
541 | hlist_del_rcu(&dest->d_list); | |
542 | dest->in_rs_table = 0; | |
1da177e4 | 543 | } |
1da177e4 LT |
544 | } |
545 | ||
276472ea JA |
546 | /* Check if real service by <proto,addr,port> is present */ |
547 | bool ip_vs_has_real_service(struct net *net, int af, __u16 protocol, | |
548 | const union nf_inet_addr *daddr, __be16 dport) | |
1da177e4 | 549 | { |
fc723250 | 550 | struct netns_ipvs *ipvs = net_ipvs(net); |
95c96174 | 551 | unsigned int hash; |
1da177e4 LT |
552 | struct ip_vs_dest *dest; |
553 | ||
276472ea | 554 | /* Check for "full" addressed entries */ |
7937df15 | 555 | hash = ip_vs_rs_hashkey(af, daddr, dport); |
1da177e4 | 556 | |
276472ea JA |
557 | rcu_read_lock(); |
558 | hlist_for_each_entry_rcu(dest, &ipvs->rs_table[hash], d_list) { | |
559 | if (dest->port == dport && | |
560 | dest->af == af && | |
561 | ip_vs_addr_equal(af, &dest->addr, daddr) && | |
562 | (dest->protocol == protocol || dest->vfwmark)) { | |
1da177e4 | 563 | /* HIT */ |
276472ea JA |
564 | rcu_read_unlock(); |
565 | return true; | |
1da177e4 LT |
566 | } |
567 | } | |
276472ea | 568 | rcu_read_unlock(); |
1da177e4 | 569 | |
276472ea | 570 | return false; |
1da177e4 LT |
571 | } |
572 | ||
413c2d04 JA |
573 | /* Lookup destination by {addr,port} in the given service |
574 | * Called under RCU lock. | |
1da177e4 LT |
575 | */ |
576 | static struct ip_vs_dest * | |
655eef10 AG |
577 | ip_vs_lookup_dest(struct ip_vs_service *svc, int dest_af, |
578 | const union nf_inet_addr *daddr, __be16 dport) | |
1da177e4 LT |
579 | { |
580 | struct ip_vs_dest *dest; | |
581 | ||
582 | /* | |
583 | * Find the destination for the given service | |
584 | */ | |
413c2d04 | 585 | list_for_each_entry_rcu(dest, &svc->destinations, n_list) { |
655eef10 AG |
586 | if ((dest->af == dest_af) && |
587 | ip_vs_addr_equal(dest_af, &dest->addr, daddr) && | |
588 | (dest->port == dport)) { | |
1da177e4 LT |
589 | /* HIT */ |
590 | return dest; | |
591 | } | |
592 | } | |
593 | ||
594 | return NULL; | |
595 | } | |
596 | ||
1e356f9c RB |
597 | /* |
598 | * Find destination by {daddr,dport,vaddr,protocol} | |
413c2d04 | 599 | * Created to be used in ip_vs_process_message() in |
1e356f9c RB |
600 | * the backup synchronization daemon. It finds the |
601 | * destination to be bound to the received connection | |
602 | * on the backup. | |
413c2d04 | 603 | * Called under RCU lock, no refcnt is returned. |
1e356f9c | 604 | */ |
655eef10 | 605 | struct ip_vs_dest *ip_vs_find_dest(struct net *net, int svc_af, int dest_af, |
fc723250 | 606 | const union nf_inet_addr *daddr, |
7937df15 JV |
607 | __be16 dport, |
608 | const union nf_inet_addr *vaddr, | |
52793dbe JA |
609 | __be16 vport, __u16 protocol, __u32 fwmark, |
610 | __u32 flags) | |
1e356f9c RB |
611 | { |
612 | struct ip_vs_dest *dest; | |
613 | struct ip_vs_service *svc; | |
52793dbe | 614 | __be16 port = dport; |
1e356f9c | 615 | |
655eef10 | 616 | svc = ip_vs_service_find(net, svc_af, fwmark, protocol, vaddr, vport); |
1e356f9c RB |
617 | if (!svc) |
618 | return NULL; | |
52793dbe JA |
619 | if (fwmark && (flags & IP_VS_CONN_F_FWD_MASK) != IP_VS_CONN_F_MASQ) |
620 | port = 0; | |
655eef10 | 621 | dest = ip_vs_lookup_dest(svc, dest_af, daddr, port); |
52793dbe | 622 | if (!dest) |
655eef10 | 623 | dest = ip_vs_lookup_dest(svc, dest_af, daddr, port ^ dport); |
1e356f9c RB |
624 | return dest; |
625 | } | |
1da177e4 | 626 | |
026ace06 JA |
627 | void ip_vs_dest_dst_rcu_free(struct rcu_head *head) |
628 | { | |
629 | struct ip_vs_dest_dst *dest_dst = container_of(head, | |
630 | struct ip_vs_dest_dst, | |
631 | rcu_head); | |
632 | ||
633 | dst_release(dest_dst->dst_cache); | |
634 | kfree(dest_dst); | |
635 | } | |
636 | ||
637 | /* Release dest_dst and dst_cache for dest in user context */ | |
d1deae4d JA |
638 | static void __ip_vs_dst_cache_reset(struct ip_vs_dest *dest) |
639 | { | |
026ace06 | 640 | struct ip_vs_dest_dst *old; |
d1deae4d | 641 | |
026ace06 JA |
642 | old = rcu_dereference_protected(dest->dest_dst, 1); |
643 | if (old) { | |
644 | RCU_INIT_POINTER(dest->dest_dst, NULL); | |
645 | call_rcu(&old->rcu_head, ip_vs_dest_dst_rcu_free); | |
646 | } | |
d1deae4d JA |
647 | } |
648 | ||
1da177e4 LT |
649 | /* |
650 | * Lookup dest by {svc,addr,port} in the destination trash. | |
651 | * The destination trash is used to hold the destinations that are removed | |
652 | * from the service table but are still referenced by some conn entries. | |
653 | * The reason to add the destination trash is when the dest is temporary | |
654 | * down (either by administrator or by monitor program), the dest can be | |
655 | * picked back from the trash, the remaining connections to the dest can | |
656 | * continue, and the counting information of the dest is also useful for | |
657 | * scheduling. | |
658 | */ | |
659 | static struct ip_vs_dest * | |
ad147aa4 AG |
660 | ip_vs_trash_get_dest(struct ip_vs_service *svc, int dest_af, |
661 | const union nf_inet_addr *daddr, __be16 dport) | |
1da177e4 | 662 | { |
578bc3ef | 663 | struct ip_vs_dest *dest; |
f2431e6e | 664 | struct netns_ipvs *ipvs = net_ipvs(svc->net); |
1da177e4 LT |
665 | |
666 | /* | |
667 | * Find the destination in trash | |
668 | */ | |
578bc3ef JA |
669 | spin_lock_bh(&ipvs->dest_trash_lock); |
670 | list_for_each_entry(dest, &ipvs->dest_trash, t_list) { | |
7937df15 JV |
671 | IP_VS_DBG_BUF(3, "Destination %u/%s:%u still in trash, " |
672 | "dest->refcnt=%d\n", | |
673 | dest->vfwmark, | |
ad147aa4 | 674 | IP_VS_DBG_ADDR(dest->af, &dest->addr), |
7937df15 JV |
675 | ntohs(dest->port), |
676 | atomic_read(&dest->refcnt)); | |
ad147aa4 AG |
677 | if (dest->af == dest_af && |
678 | ip_vs_addr_equal(dest_af, &dest->addr, daddr) && | |
1da177e4 LT |
679 | dest->port == dport && |
680 | dest->vfwmark == svc->fwmark && | |
681 | dest->protocol == svc->protocol && | |
682 | (svc->fwmark || | |
7937df15 | 683 | (ip_vs_addr_equal(svc->af, &dest->vaddr, &svc->addr) && |
1da177e4 LT |
684 | dest->vport == svc->port))) { |
685 | /* HIT */ | |
578bc3ef JA |
686 | list_del(&dest->t_list); |
687 | ip_vs_dest_hold(dest); | |
688 | goto out; | |
1da177e4 LT |
689 | } |
690 | } | |
691 | ||
578bc3ef JA |
692 | dest = NULL; |
693 | ||
694 | out: | |
695 | spin_unlock_bh(&ipvs->dest_trash_lock); | |
696 | ||
697 | return dest; | |
1da177e4 LT |
698 | } |
699 | ||
578bc3ef JA |
700 | static void ip_vs_dest_free(struct ip_vs_dest *dest) |
701 | { | |
bcbde4c0 JA |
702 | struct ip_vs_service *svc = rcu_dereference_protected(dest->svc, 1); |
703 | ||
578bc3ef | 704 | __ip_vs_dst_cache_reset(dest); |
bcbde4c0 | 705 | __ip_vs_svc_put(svc, false); |
578bc3ef | 706 | free_percpu(dest->stats.cpustats); |
9e4e948a | 707 | ip_vs_dest_put_and_free(dest); |
578bc3ef | 708 | } |
1da177e4 LT |
709 | |
710 | /* | |
711 | * Clean up all the destinations in the trash | |
712 | * Called by the ip_vs_control_cleanup() | |
713 | * | |
714 | * When the ip_vs_control_clearup is activated by ipvs module exit, | |
715 | * the service tables must have been flushed and all the connections | |
716 | * are expired, and the refcnt of each destination in the trash must | |
578bc3ef | 717 | * be 0, so we simply release them here. |
1da177e4 | 718 | */ |
f2431e6e | 719 | static void ip_vs_trash_cleanup(struct net *net) |
1da177e4 LT |
720 | { |
721 | struct ip_vs_dest *dest, *nxt; | |
f2431e6e | 722 | struct netns_ipvs *ipvs = net_ipvs(net); |
1da177e4 | 723 | |
578bc3ef JA |
724 | del_timer_sync(&ipvs->dest_trash_timer); |
725 | /* No need to use dest_trash_lock */ | |
726 | list_for_each_entry_safe(dest, nxt, &ipvs->dest_trash, t_list) { | |
727 | list_del(&dest->t_list); | |
728 | ip_vs_dest_free(dest); | |
1da177e4 LT |
729 | } |
730 | } | |
731 | ||
55a3d4e1 JA |
732 | static void |
733 | ip_vs_copy_stats(struct ip_vs_stats_user *dst, struct ip_vs_stats *src) | |
734 | { | |
735 | #define IP_VS_SHOW_STATS_COUNTER(c) dst->c = src->ustats.c - src->ustats0.c | |
55a3d4e1 JA |
736 | |
737 | spin_lock_bh(&src->lock); | |
738 | ||
739 | IP_VS_SHOW_STATS_COUNTER(conns); | |
740 | IP_VS_SHOW_STATS_COUNTER(inpkts); | |
741 | IP_VS_SHOW_STATS_COUNTER(outpkts); | |
742 | IP_VS_SHOW_STATS_COUNTER(inbytes); | |
743 | IP_VS_SHOW_STATS_COUNTER(outbytes); | |
744 | ||
ea9f22cc | 745 | ip_vs_read_estimator(dst, src); |
55a3d4e1 JA |
746 | |
747 | spin_unlock_bh(&src->lock); | |
748 | } | |
1da177e4 LT |
749 | |
750 | static void | |
751 | ip_vs_zero_stats(struct ip_vs_stats *stats) | |
752 | { | |
753 | spin_lock_bh(&stats->lock); | |
e93615d0 | 754 | |
55a3d4e1 JA |
755 | /* get current counters as zero point, rates are zeroed */ |
756 | ||
757 | #define IP_VS_ZERO_STATS_COUNTER(c) stats->ustats0.c = stats->ustats.c | |
55a3d4e1 JA |
758 | |
759 | IP_VS_ZERO_STATS_COUNTER(conns); | |
760 | IP_VS_ZERO_STATS_COUNTER(inpkts); | |
761 | IP_VS_ZERO_STATS_COUNTER(outpkts); | |
762 | IP_VS_ZERO_STATS_COUNTER(inbytes); | |
763 | IP_VS_ZERO_STATS_COUNTER(outbytes); | |
764 | ||
1da177e4 | 765 | ip_vs_zero_estimator(stats); |
e93615d0 | 766 | |
3a14a313 | 767 | spin_unlock_bh(&stats->lock); |
1da177e4 LT |
768 | } |
769 | ||
770 | /* | |
771 | * Update a destination in the given service | |
772 | */ | |
773 | static void | |
26c15cfd JA |
774 | __ip_vs_update_dest(struct ip_vs_service *svc, struct ip_vs_dest *dest, |
775 | struct ip_vs_dest_user_kern *udest, int add) | |
1da177e4 | 776 | { |
fc723250 | 777 | struct netns_ipvs *ipvs = net_ipvs(svc->net); |
bcbde4c0 | 778 | struct ip_vs_service *old_svc; |
ceec4c38 | 779 | struct ip_vs_scheduler *sched; |
1da177e4 LT |
780 | int conn_flags; |
781 | ||
391f503d AG |
782 | /* We cannot modify an address and change the address family */ |
783 | BUG_ON(!add && udest->af != dest->af); | |
784 | ||
785 | if (add && udest->af != svc->af) | |
786 | ipvs->mixed_address_family_dests++; | |
787 | ||
1da177e4 LT |
788 | /* set the weight and the flags */ |
789 | atomic_set(&dest->weight, udest->weight); | |
3575792e JA |
790 | conn_flags = udest->conn_flags & IP_VS_CONN_F_DEST_MASK; |
791 | conn_flags |= IP_VS_CONN_F_INACTIVE; | |
1da177e4 | 792 | |
1da177e4 | 793 | /* set the IP_VS_CONN_F_NOOUTPUT flag if not masquerading/NAT */ |
3575792e | 794 | if ((conn_flags & IP_VS_CONN_F_FWD_MASK) != IP_VS_CONN_F_MASQ) { |
1da177e4 LT |
795 | conn_flags |= IP_VS_CONN_F_NOOUTPUT; |
796 | } else { | |
797 | /* | |
fc723250 | 798 | * Put the real service in rs_table if not present. |
1da177e4 LT |
799 | * For now only for NAT! |
800 | */ | |
fc723250 | 801 | ip_vs_rs_hash(ipvs, dest); |
1da177e4 LT |
802 | } |
803 | atomic_set(&dest->conn_flags, conn_flags); | |
804 | ||
805 | /* bind the service */ | |
bcbde4c0 JA |
806 | old_svc = rcu_dereference_protected(dest->svc, 1); |
807 | if (!old_svc) { | |
1da177e4 LT |
808 | __ip_vs_bind_svc(dest, svc); |
809 | } else { | |
bcbde4c0 | 810 | if (old_svc != svc) { |
1da177e4 LT |
811 | ip_vs_zero_stats(&dest->stats); |
812 | __ip_vs_bind_svc(dest, svc); | |
bcbde4c0 | 813 | __ip_vs_svc_put(old_svc, true); |
1da177e4 LT |
814 | } |
815 | } | |
816 | ||
817 | /* set the dest status flags */ | |
818 | dest->flags |= IP_VS_DEST_F_AVAILABLE; | |
819 | ||
820 | if (udest->u_threshold == 0 || udest->u_threshold > dest->u_threshold) | |
821 | dest->flags &= ~IP_VS_DEST_F_OVERLOAD; | |
822 | dest->u_threshold = udest->u_threshold; | |
823 | dest->l_threshold = udest->l_threshold; | |
26c15cfd | 824 | |
6cff339b AG |
825 | dest->af = udest->af; |
826 | ||
ff75f40f | 827 | spin_lock_bh(&dest->dst_lock); |
d1deae4d | 828 | __ip_vs_dst_cache_reset(dest); |
ff75f40f | 829 | spin_unlock_bh(&dest->dst_lock); |
fc604767 | 830 | |
ceec4c38 | 831 | sched = rcu_dereference_protected(svc->scheduler, 1); |
26c15cfd | 832 | if (add) { |
ceec4c38 | 833 | ip_vs_start_estimator(svc->net, &dest->stats); |
413c2d04 | 834 | list_add_rcu(&dest->n_list, &svc->destinations); |
26c15cfd | 835 | svc->num_dests++; |
ceec4c38 JA |
836 | if (sched->add_dest) |
837 | sched->add_dest(svc, dest); | |
6b6df466 | 838 | } else { |
ceec4c38 JA |
839 | if (sched->upd_dest) |
840 | sched->upd_dest(svc, dest); | |
26c15cfd | 841 | } |
1da177e4 LT |
842 | } |
843 | ||
844 | ||
845 | /* | |
846 | * Create a destination for the given service | |
847 | */ | |
848 | static int | |
c860c6b1 | 849 | ip_vs_new_dest(struct ip_vs_service *svc, struct ip_vs_dest_user_kern *udest, |
1da177e4 LT |
850 | struct ip_vs_dest **dest_p) |
851 | { | |
852 | struct ip_vs_dest *dest; | |
827da44c | 853 | unsigned int atype, i; |
1da177e4 LT |
854 | |
855 | EnterFunction(2); | |
856 | ||
09571c7a | 857 | #ifdef CONFIG_IP_VS_IPV6 |
6cff339b | 858 | if (udest->af == AF_INET6) { |
09571c7a | 859 | atype = ipv6_addr_type(&udest->addr.in6); |
3bfb92f4 SW |
860 | if ((!(atype & IPV6_ADDR_UNICAST) || |
861 | atype & IPV6_ADDR_LINKLOCAL) && | |
4a98480b | 862 | !__ip_vs_addr_is_local_v6(svc->net, &udest->addr.in6)) |
09571c7a VB |
863 | return -EINVAL; |
864 | } else | |
865 | #endif | |
866 | { | |
4a98480b | 867 | atype = inet_addr_type(svc->net, udest->addr.ip); |
09571c7a VB |
868 | if (atype != RTN_LOCAL && atype != RTN_UNICAST) |
869 | return -EINVAL; | |
870 | } | |
1da177e4 | 871 | |
dee06e47 | 872 | dest = kzalloc(sizeof(struct ip_vs_dest), GFP_KERNEL); |
0a9ee813 | 873 | if (dest == NULL) |
1da177e4 | 874 | return -ENOMEM; |
0a9ee813 | 875 | |
b17fc996 | 876 | dest->stats.cpustats = alloc_percpu(struct ip_vs_cpu_stats); |
0a9ee813 | 877 | if (!dest->stats.cpustats) |
b17fc996 | 878 | goto err_alloc; |
1da177e4 | 879 | |
827da44c JS |
880 | for_each_possible_cpu(i) { |
881 | struct ip_vs_cpu_stats *ip_vs_dest_stats; | |
882 | ip_vs_dest_stats = per_cpu_ptr(dest->stats.cpustats, i); | |
883 | u64_stats_init(&ip_vs_dest_stats->syncp); | |
884 | } | |
885 | ||
6cff339b | 886 | dest->af = udest->af; |
1da177e4 | 887 | dest->protocol = svc->protocol; |
c860c6b1 | 888 | dest->vaddr = svc->addr; |
1da177e4 LT |
889 | dest->vport = svc->port; |
890 | dest->vfwmark = svc->fwmark; | |
6cff339b | 891 | ip_vs_addr_copy(udest->af, &dest->addr, &udest->addr); |
1da177e4 LT |
892 | dest->port = udest->port; |
893 | ||
894 | atomic_set(&dest->activeconns, 0); | |
895 | atomic_set(&dest->inactconns, 0); | |
896 | atomic_set(&dest->persistconns, 0); | |
26c15cfd | 897 | atomic_set(&dest->refcnt, 1); |
1da177e4 | 898 | |
276472ea | 899 | INIT_HLIST_NODE(&dest->d_list); |
1da177e4 LT |
900 | spin_lock_init(&dest->dst_lock); |
901 | spin_lock_init(&dest->stats.lock); | |
26c15cfd | 902 | __ip_vs_update_dest(svc, dest, udest, 1); |
1da177e4 LT |
903 | |
904 | *dest_p = dest; | |
905 | ||
906 | LeaveFunction(2); | |
907 | return 0; | |
b17fc996 HS |
908 | |
909 | err_alloc: | |
910 | kfree(dest); | |
911 | return -ENOMEM; | |
1da177e4 LT |
912 | } |
913 | ||
914 | ||
915 | /* | |
916 | * Add a destination into an existing service | |
917 | */ | |
918 | static int | |
c860c6b1 | 919 | ip_vs_add_dest(struct ip_vs_service *svc, struct ip_vs_dest_user_kern *udest) |
1da177e4 LT |
920 | { |
921 | struct ip_vs_dest *dest; | |
c860c6b1 | 922 | union nf_inet_addr daddr; |
014d730d | 923 | __be16 dport = udest->port; |
1da177e4 LT |
924 | int ret; |
925 | ||
926 | EnterFunction(2); | |
927 | ||
928 | if (udest->weight < 0) { | |
1e3e238e | 929 | pr_err("%s(): server weight less than zero\n", __func__); |
1da177e4 LT |
930 | return -ERANGE; |
931 | } | |
932 | ||
933 | if (udest->l_threshold > udest->u_threshold) { | |
1e3e238e HE |
934 | pr_err("%s(): lower threshold is higher than upper threshold\n", |
935 | __func__); | |
1da177e4 LT |
936 | return -ERANGE; |
937 | } | |
938 | ||
6cff339b | 939 | ip_vs_addr_copy(udest->af, &daddr, &udest->addr); |
c860c6b1 | 940 | |
413c2d04 JA |
941 | /* We use function that requires RCU lock */ |
942 | rcu_read_lock(); | |
655eef10 | 943 | dest = ip_vs_lookup_dest(svc, udest->af, &daddr, dport); |
413c2d04 | 944 | rcu_read_unlock(); |
7937df15 | 945 | |
1da177e4 | 946 | if (dest != NULL) { |
1e3e238e | 947 | IP_VS_DBG(1, "%s(): dest already exists\n", __func__); |
1da177e4 LT |
948 | return -EEXIST; |
949 | } | |
950 | ||
951 | /* | |
952 | * Check if the dest already exists in the trash and | |
953 | * is from the same service | |
954 | */ | |
ad147aa4 | 955 | dest = ip_vs_trash_get_dest(svc, udest->af, &daddr, dport); |
7937df15 | 956 | |
1da177e4 | 957 | if (dest != NULL) { |
cfc78c5a JV |
958 | IP_VS_DBG_BUF(3, "Get destination %s:%u from trash, " |
959 | "dest->refcnt=%d, service %u/%s:%u\n", | |
6cff339b | 960 | IP_VS_DBG_ADDR(udest->af, &daddr), ntohs(dport), |
cfc78c5a JV |
961 | atomic_read(&dest->refcnt), |
962 | dest->vfwmark, | |
963 | IP_VS_DBG_ADDR(svc->af, &dest->vaddr), | |
964 | ntohs(dest->vport)); | |
965 | ||
26c15cfd JA |
966 | __ip_vs_update_dest(svc, dest, udest, 1); |
967 | ret = 0; | |
968 | } else { | |
1da177e4 | 969 | /* |
26c15cfd | 970 | * Allocate and initialize the dest structure |
1da177e4 | 971 | */ |
26c15cfd | 972 | ret = ip_vs_new_dest(svc, udest, &dest); |
1da177e4 | 973 | } |
1da177e4 LT |
974 | LeaveFunction(2); |
975 | ||
26c15cfd | 976 | return ret; |
1da177e4 LT |
977 | } |
978 | ||
979 | ||
980 | /* | |
981 | * Edit a destination in the given service | |
982 | */ | |
983 | static int | |
c860c6b1 | 984 | ip_vs_edit_dest(struct ip_vs_service *svc, struct ip_vs_dest_user_kern *udest) |
1da177e4 LT |
985 | { |
986 | struct ip_vs_dest *dest; | |
c860c6b1 | 987 | union nf_inet_addr daddr; |
014d730d | 988 | __be16 dport = udest->port; |
1da177e4 LT |
989 | |
990 | EnterFunction(2); | |
991 | ||
992 | if (udest->weight < 0) { | |
1e3e238e | 993 | pr_err("%s(): server weight less than zero\n", __func__); |
1da177e4 LT |
994 | return -ERANGE; |
995 | } | |
996 | ||
997 | if (udest->l_threshold > udest->u_threshold) { | |
1e3e238e HE |
998 | pr_err("%s(): lower threshold is higher than upper threshold\n", |
999 | __func__); | |
1da177e4 LT |
1000 | return -ERANGE; |
1001 | } | |
1002 | ||
6cff339b | 1003 | ip_vs_addr_copy(udest->af, &daddr, &udest->addr); |
c860c6b1 | 1004 | |
413c2d04 JA |
1005 | /* We use function that requires RCU lock */ |
1006 | rcu_read_lock(); | |
655eef10 | 1007 | dest = ip_vs_lookup_dest(svc, udest->af, &daddr, dport); |
413c2d04 | 1008 | rcu_read_unlock(); |
7937df15 | 1009 | |
1da177e4 | 1010 | if (dest == NULL) { |
1e3e238e | 1011 | IP_VS_DBG(1, "%s(): dest doesn't exist\n", __func__); |
1da177e4 LT |
1012 | return -ENOENT; |
1013 | } | |
1014 | ||
26c15cfd | 1015 | __ip_vs_update_dest(svc, dest, udest, 0); |
1da177e4 LT |
1016 | LeaveFunction(2); |
1017 | ||
1018 | return 0; | |
1019 | } | |
1020 | ||
1da177e4 LT |
1021 | /* |
1022 | * Delete a destination (must be already unlinked from the service) | |
1023 | */ | |
578bc3ef JA |
1024 | static void __ip_vs_del_dest(struct net *net, struct ip_vs_dest *dest, |
1025 | bool cleanup) | |
1da177e4 | 1026 | { |
a0840e2e HS |
1027 | struct netns_ipvs *ipvs = net_ipvs(net); |
1028 | ||
6ef757f9 | 1029 | ip_vs_stop_estimator(net, &dest->stats); |
1da177e4 LT |
1030 | |
1031 | /* | |
1032 | * Remove it from the d-linked list with the real services. | |
1033 | */ | |
1da177e4 | 1034 | ip_vs_rs_unhash(dest); |
1da177e4 | 1035 | |
578bc3ef JA |
1036 | spin_lock_bh(&ipvs->dest_trash_lock); |
1037 | IP_VS_DBG_BUF(3, "Moving dest %s:%u into trash, dest->refcnt=%d\n", | |
1038 | IP_VS_DBG_ADDR(dest->af, &dest->addr), ntohs(dest->port), | |
1039 | atomic_read(&dest->refcnt)); | |
1040 | if (list_empty(&ipvs->dest_trash) && !cleanup) | |
1041 | mod_timer(&ipvs->dest_trash_timer, | |
bcbde4c0 | 1042 | jiffies + (IP_VS_DEST_TRASH_PERIOD >> 1)); |
578bc3ef JA |
1043 | /* dest lives in trash without reference */ |
1044 | list_add(&dest->t_list, &ipvs->dest_trash); | |
bcbde4c0 | 1045 | dest->idle_start = 0; |
578bc3ef JA |
1046 | spin_unlock_bh(&ipvs->dest_trash_lock); |
1047 | ip_vs_dest_put(dest); | |
1da177e4 LT |
1048 | } |
1049 | ||
1050 | ||
1051 | /* | |
1052 | * Unlink a destination from the given service | |
1053 | */ | |
1054 | static void __ip_vs_unlink_dest(struct ip_vs_service *svc, | |
1055 | struct ip_vs_dest *dest, | |
1056 | int svcupd) | |
1057 | { | |
1058 | dest->flags &= ~IP_VS_DEST_F_AVAILABLE; | |
1059 | ||
1060 | /* | |
1061 | * Remove it from the d-linked destination list. | |
1062 | */ | |
413c2d04 | 1063 | list_del_rcu(&dest->n_list); |
1da177e4 | 1064 | svc->num_dests--; |
82dfb6f3 | 1065 | |
391f503d AG |
1066 | if (dest->af != svc->af) |
1067 | net_ipvs(svc->net)->mixed_address_family_dests--; | |
1068 | ||
ceec4c38 JA |
1069 | if (svcupd) { |
1070 | struct ip_vs_scheduler *sched; | |
6b6df466 | 1071 | |
ceec4c38 JA |
1072 | sched = rcu_dereference_protected(svc->scheduler, 1); |
1073 | if (sched->del_dest) | |
1074 | sched->del_dest(svc, dest); | |
1075 | } | |
1da177e4 LT |
1076 | } |
1077 | ||
1078 | ||
1079 | /* | |
1080 | * Delete a destination server in the given service | |
1081 | */ | |
1082 | static int | |
c860c6b1 | 1083 | ip_vs_del_dest(struct ip_vs_service *svc, struct ip_vs_dest_user_kern *udest) |
1da177e4 LT |
1084 | { |
1085 | struct ip_vs_dest *dest; | |
014d730d | 1086 | __be16 dport = udest->port; |
1da177e4 LT |
1087 | |
1088 | EnterFunction(2); | |
1089 | ||
413c2d04 JA |
1090 | /* We use function that requires RCU lock */ |
1091 | rcu_read_lock(); | |
655eef10 | 1092 | dest = ip_vs_lookup_dest(svc, udest->af, &udest->addr, dport); |
413c2d04 | 1093 | rcu_read_unlock(); |
c860c6b1 | 1094 | |
1da177e4 | 1095 | if (dest == NULL) { |
1e3e238e | 1096 | IP_VS_DBG(1, "%s(): destination not found!\n", __func__); |
1da177e4 LT |
1097 | return -ENOENT; |
1098 | } | |
1099 | ||
1da177e4 LT |
1100 | /* |
1101 | * Unlink dest from the service | |
1102 | */ | |
1103 | __ip_vs_unlink_dest(svc, dest, 1); | |
1104 | ||
1da177e4 LT |
1105 | /* |
1106 | * Delete the destination | |
1107 | */ | |
578bc3ef | 1108 | __ip_vs_del_dest(svc->net, dest, false); |
1da177e4 LT |
1109 | |
1110 | LeaveFunction(2); | |
1111 | ||
1112 | return 0; | |
1113 | } | |
1114 | ||
578bc3ef JA |
1115 | static void ip_vs_dest_trash_expire(unsigned long data) |
1116 | { | |
1117 | struct net *net = (struct net *) data; | |
1118 | struct netns_ipvs *ipvs = net_ipvs(net); | |
1119 | struct ip_vs_dest *dest, *next; | |
bcbde4c0 | 1120 | unsigned long now = jiffies; |
578bc3ef JA |
1121 | |
1122 | spin_lock(&ipvs->dest_trash_lock); | |
1123 | list_for_each_entry_safe(dest, next, &ipvs->dest_trash, t_list) { | |
578bc3ef JA |
1124 | if (atomic_read(&dest->refcnt) > 0) |
1125 | continue; | |
bcbde4c0 JA |
1126 | if (dest->idle_start) { |
1127 | if (time_before(now, dest->idle_start + | |
1128 | IP_VS_DEST_TRASH_PERIOD)) | |
1129 | continue; | |
1130 | } else { | |
1131 | dest->idle_start = max(1UL, now); | |
1132 | continue; | |
1133 | } | |
578bc3ef JA |
1134 | IP_VS_DBG_BUF(3, "Removing destination %u/%s:%u from trash\n", |
1135 | dest->vfwmark, | |
bcbde4c0 | 1136 | IP_VS_DBG_ADDR(dest->af, &dest->addr), |
578bc3ef JA |
1137 | ntohs(dest->port)); |
1138 | list_del(&dest->t_list); | |
1139 | ip_vs_dest_free(dest); | |
1140 | } | |
1141 | if (!list_empty(&ipvs->dest_trash)) | |
1142 | mod_timer(&ipvs->dest_trash_timer, | |
bcbde4c0 | 1143 | jiffies + (IP_VS_DEST_TRASH_PERIOD >> 1)); |
578bc3ef JA |
1144 | spin_unlock(&ipvs->dest_trash_lock); |
1145 | } | |
1da177e4 LT |
1146 | |
1147 | /* | |
1148 | * Add a service into the service hash table | |
1149 | */ | |
1150 | static int | |
fc723250 | 1151 | ip_vs_add_service(struct net *net, struct ip_vs_service_user_kern *u, |
c860c6b1 | 1152 | struct ip_vs_service **svc_p) |
1da177e4 | 1153 | { |
827da44c | 1154 | int ret = 0, i; |
1da177e4 | 1155 | struct ip_vs_scheduler *sched = NULL; |
0d1e71b0 | 1156 | struct ip_vs_pe *pe = NULL; |
1da177e4 | 1157 | struct ip_vs_service *svc = NULL; |
a0840e2e | 1158 | struct netns_ipvs *ipvs = net_ipvs(net); |
1da177e4 LT |
1159 | |
1160 | /* increase the module use count */ | |
1161 | ip_vs_use_count_inc(); | |
1162 | ||
1163 | /* Lookup the scheduler by 'u->sched_name' */ | |
1164 | sched = ip_vs_scheduler_get(u->sched_name); | |
1165 | if (sched == NULL) { | |
1e3e238e | 1166 | pr_info("Scheduler module ip_vs_%s not found\n", u->sched_name); |
1da177e4 | 1167 | ret = -ENOENT; |
6e08bfb8 | 1168 | goto out_err; |
1da177e4 LT |
1169 | } |
1170 | ||
0d1e71b0 | 1171 | if (u->pe_name && *u->pe_name) { |
e9e5eee8 | 1172 | pe = ip_vs_pe_getbyname(u->pe_name); |
0d1e71b0 SH |
1173 | if (pe == NULL) { |
1174 | pr_info("persistence engine module ip_vs_pe_%s " | |
1175 | "not found\n", u->pe_name); | |
1176 | ret = -ENOENT; | |
1177 | goto out_err; | |
1178 | } | |
1179 | } | |
1180 | ||
f94fd041 | 1181 | #ifdef CONFIG_IP_VS_IPV6 |
0a925864 JA |
1182 | if (u->af == AF_INET6) { |
1183 | __u32 plen = (__force __u32) u->netmask; | |
1184 | ||
1185 | if (plen < 1 || plen > 128) { | |
1186 | ret = -EINVAL; | |
1187 | goto out_err; | |
1188 | } | |
f94fd041 JV |
1189 | } |
1190 | #endif | |
1191 | ||
dee06e47 | 1192 | svc = kzalloc(sizeof(struct ip_vs_service), GFP_KERNEL); |
1da177e4 | 1193 | if (svc == NULL) { |
1e3e238e | 1194 | IP_VS_DBG(1, "%s(): no memory\n", __func__); |
1da177e4 LT |
1195 | ret = -ENOMEM; |
1196 | goto out_err; | |
1197 | } | |
b17fc996 | 1198 | svc->stats.cpustats = alloc_percpu(struct ip_vs_cpu_stats); |
0a54e939 JL |
1199 | if (!svc->stats.cpustats) { |
1200 | ret = -ENOMEM; | |
b17fc996 | 1201 | goto out_err; |
0a54e939 | 1202 | } |
1da177e4 | 1203 | |
827da44c JS |
1204 | for_each_possible_cpu(i) { |
1205 | struct ip_vs_cpu_stats *ip_vs_stats; | |
1206 | ip_vs_stats = per_cpu_ptr(svc->stats.cpustats, i); | |
1207 | u64_stats_init(&ip_vs_stats->syncp); | |
1208 | } | |
1209 | ||
1210 | ||
1da177e4 | 1211 | /* I'm the first user of the service */ |
1da177e4 LT |
1212 | atomic_set(&svc->refcnt, 0); |
1213 | ||
c860c6b1 | 1214 | svc->af = u->af; |
1da177e4 | 1215 | svc->protocol = u->protocol; |
c860c6b1 | 1216 | ip_vs_addr_copy(svc->af, &svc->addr, &u->addr); |
1da177e4 LT |
1217 | svc->port = u->port; |
1218 | svc->fwmark = u->fwmark; | |
1219 | svc->flags = u->flags; | |
1220 | svc->timeout = u->timeout * HZ; | |
1221 | svc->netmask = u->netmask; | |
fc723250 | 1222 | svc->net = net; |
1da177e4 LT |
1223 | |
1224 | INIT_LIST_HEAD(&svc->destinations); | |
ba3a3ce1 | 1225 | spin_lock_init(&svc->sched_lock); |
1da177e4 LT |
1226 | spin_lock_init(&svc->stats.lock); |
1227 | ||
1228 | /* Bind the scheduler */ | |
1229 | ret = ip_vs_bind_scheduler(svc, sched); | |
1230 | if (ret) | |
1231 | goto out_err; | |
1232 | sched = NULL; | |
1233 | ||
0d1e71b0 | 1234 | /* Bind the ct retriever */ |
ceec4c38 | 1235 | RCU_INIT_POINTER(svc->pe, pe); |
0d1e71b0 SH |
1236 | pe = NULL; |
1237 | ||
1da177e4 LT |
1238 | /* Update the virtual service counters */ |
1239 | if (svc->port == FTPPORT) | |
763f8d0e | 1240 | atomic_inc(&ipvs->ftpsvc_counter); |
1da177e4 | 1241 | else if (svc->port == 0) |
763f8d0e | 1242 | atomic_inc(&ipvs->nullsvc_counter); |
1da177e4 | 1243 | |
6ef757f9 | 1244 | ip_vs_start_estimator(net, &svc->stats); |
f94fd041 JV |
1245 | |
1246 | /* Count only IPv4 services for old get/setsockopt interface */ | |
1247 | if (svc->af == AF_INET) | |
a0840e2e | 1248 | ipvs->num_services++; |
1da177e4 LT |
1249 | |
1250 | /* Hash the service into the service table */ | |
1da177e4 | 1251 | ip_vs_svc_hash(svc); |
1da177e4 LT |
1252 | |
1253 | *svc_p = svc; | |
7a4f0761 HS |
1254 | /* Now there is a service - full throttle */ |
1255 | ipvs->enable = 1; | |
1da177e4 LT |
1256 | return 0; |
1257 | ||
b17fc996 | 1258 | |
6e08bfb8 | 1259 | out_err: |
1da177e4 | 1260 | if (svc != NULL) { |
ceec4c38 JA |
1261 | ip_vs_unbind_scheduler(svc, sched); |
1262 | ip_vs_service_free(svc); | |
1da177e4 LT |
1263 | } |
1264 | ip_vs_scheduler_put(sched); | |
0d1e71b0 | 1265 | ip_vs_pe_put(pe); |
1da177e4 | 1266 | |
1da177e4 LT |
1267 | /* decrease the module use count */ |
1268 | ip_vs_use_count_dec(); | |
1269 | ||
1270 | return ret; | |
1271 | } | |
1272 | ||
1273 | ||
1274 | /* | |
1275 | * Edit a service and bind it with a new scheduler | |
1276 | */ | |
1277 | static int | |
c860c6b1 | 1278 | ip_vs_edit_service(struct ip_vs_service *svc, struct ip_vs_service_user_kern *u) |
1da177e4 LT |
1279 | { |
1280 | struct ip_vs_scheduler *sched, *old_sched; | |
0d1e71b0 | 1281 | struct ip_vs_pe *pe = NULL, *old_pe = NULL; |
1da177e4 LT |
1282 | int ret = 0; |
1283 | ||
1284 | /* | |
1285 | * Lookup the scheduler, by 'u->sched_name' | |
1286 | */ | |
1287 | sched = ip_vs_scheduler_get(u->sched_name); | |
1288 | if (sched == NULL) { | |
1e3e238e | 1289 | pr_info("Scheduler module ip_vs_%s not found\n", u->sched_name); |
1da177e4 LT |
1290 | return -ENOENT; |
1291 | } | |
1292 | old_sched = sched; | |
1293 | ||
0d1e71b0 | 1294 | if (u->pe_name && *u->pe_name) { |
e9e5eee8 | 1295 | pe = ip_vs_pe_getbyname(u->pe_name); |
0d1e71b0 SH |
1296 | if (pe == NULL) { |
1297 | pr_info("persistence engine module ip_vs_pe_%s " | |
1298 | "not found\n", u->pe_name); | |
1299 | ret = -ENOENT; | |
1300 | goto out; | |
1301 | } | |
1302 | old_pe = pe; | |
1303 | } | |
1304 | ||
f94fd041 | 1305 | #ifdef CONFIG_IP_VS_IPV6 |
0a925864 JA |
1306 | if (u->af == AF_INET6) { |
1307 | __u32 plen = (__force __u32) u->netmask; | |
1308 | ||
1309 | if (plen < 1 || plen > 128) { | |
1310 | ret = -EINVAL; | |
1311 | goto out; | |
1312 | } | |
f94fd041 JV |
1313 | } |
1314 | #endif | |
1315 | ||
ceec4c38 JA |
1316 | old_sched = rcu_dereference_protected(svc->scheduler, 1); |
1317 | if (sched != old_sched) { | |
1318 | /* Bind the new scheduler */ | |
1319 | ret = ip_vs_bind_scheduler(svc, sched); | |
1320 | if (ret) { | |
1321 | old_sched = sched; | |
1322 | goto out; | |
1323 | } | |
1324 | /* Unbind the old scheduler on success */ | |
1325 | ip_vs_unbind_scheduler(svc, old_sched); | |
1326 | } | |
1da177e4 LT |
1327 | |
1328 | /* | |
1329 | * Set the flags and timeout value | |
1330 | */ | |
1331 | svc->flags = u->flags | IP_VS_SVC_F_HASHED; | |
1332 | svc->timeout = u->timeout * HZ; | |
1333 | svc->netmask = u->netmask; | |
1334 | ||
ceec4c38 JA |
1335 | old_pe = rcu_dereference_protected(svc->pe, 1); |
1336 | if (pe != old_pe) | |
1337 | rcu_assign_pointer(svc->pe, pe); | |
1da177e4 | 1338 | |
552ad65a | 1339 | out: |
6e08bfb8 | 1340 | ip_vs_scheduler_put(old_sched); |
0d1e71b0 | 1341 | ip_vs_pe_put(old_pe); |
1da177e4 LT |
1342 | return ret; |
1343 | } | |
1344 | ||
1da177e4 LT |
1345 | /* |
1346 | * Delete a service from the service list | |
1347 | * - The service must be unlinked, unlocked and not referenced! | |
1348 | * - We are called under _bh lock | |
1349 | */ | |
578bc3ef | 1350 | static void __ip_vs_del_service(struct ip_vs_service *svc, bool cleanup) |
1da177e4 LT |
1351 | { |
1352 | struct ip_vs_dest *dest, *nxt; | |
1353 | struct ip_vs_scheduler *old_sched; | |
0d1e71b0 | 1354 | struct ip_vs_pe *old_pe; |
a0840e2e | 1355 | struct netns_ipvs *ipvs = net_ipvs(svc->net); |
0d1e71b0 SH |
1356 | |
1357 | pr_info("%s: enter\n", __func__); | |
1da177e4 | 1358 | |
f94fd041 JV |
1359 | /* Count only IPv4 services for old get/setsockopt interface */ |
1360 | if (svc->af == AF_INET) | |
a0840e2e | 1361 | ipvs->num_services--; |
f94fd041 | 1362 | |
6ef757f9 | 1363 | ip_vs_stop_estimator(svc->net, &svc->stats); |
1da177e4 LT |
1364 | |
1365 | /* Unbind scheduler */ | |
ceec4c38 JA |
1366 | old_sched = rcu_dereference_protected(svc->scheduler, 1); |
1367 | ip_vs_unbind_scheduler(svc, old_sched); | |
6e08bfb8 | 1368 | ip_vs_scheduler_put(old_sched); |
1da177e4 | 1369 | |
ceec4c38 JA |
1370 | /* Unbind persistence engine, keep svc->pe */ |
1371 | old_pe = rcu_dereference_protected(svc->pe, 1); | |
0d1e71b0 SH |
1372 | ip_vs_pe_put(old_pe); |
1373 | ||
1da177e4 LT |
1374 | /* |
1375 | * Unlink the whole destination list | |
1376 | */ | |
1377 | list_for_each_entry_safe(dest, nxt, &svc->destinations, n_list) { | |
1378 | __ip_vs_unlink_dest(svc, dest, 0); | |
578bc3ef | 1379 | __ip_vs_del_dest(svc->net, dest, cleanup); |
1da177e4 LT |
1380 | } |
1381 | ||
1382 | /* | |
1383 | * Update the virtual service counters | |
1384 | */ | |
1385 | if (svc->port == FTPPORT) | |
763f8d0e | 1386 | atomic_dec(&ipvs->ftpsvc_counter); |
1da177e4 | 1387 | else if (svc->port == 0) |
763f8d0e | 1388 | atomic_dec(&ipvs->nullsvc_counter); |
1da177e4 LT |
1389 | |
1390 | /* | |
1391 | * Free the service if nobody refers to it | |
1392 | */ | |
bcbde4c0 | 1393 | __ip_vs_svc_put(svc, true); |
1da177e4 LT |
1394 | |
1395 | /* decrease the module use count */ | |
1396 | ip_vs_use_count_dec(); | |
1397 | } | |
1398 | ||
1399 | /* | |
26c15cfd | 1400 | * Unlink a service from list and try to delete it if its refcnt reached 0 |
1da177e4 | 1401 | */ |
578bc3ef | 1402 | static void ip_vs_unlink_service(struct ip_vs_service *svc, bool cleanup) |
1da177e4 | 1403 | { |
ceec4c38 JA |
1404 | /* Hold svc to avoid double release from dest_trash */ |
1405 | atomic_inc(&svc->refcnt); | |
1da177e4 LT |
1406 | /* |
1407 | * Unhash it from the service table | |
1408 | */ | |
1da177e4 LT |
1409 | ip_vs_svc_unhash(svc); |
1410 | ||
578bc3ef | 1411 | __ip_vs_del_service(svc, cleanup); |
26c15cfd JA |
1412 | } |
1413 | ||
1414 | /* | |
1415 | * Delete a service from the service list | |
1416 | */ | |
1417 | static int ip_vs_del_service(struct ip_vs_service *svc) | |
1418 | { | |
1419 | if (svc == NULL) | |
1420 | return -EEXIST; | |
578bc3ef | 1421 | ip_vs_unlink_service(svc, false); |
1da177e4 LT |
1422 | |
1423 | return 0; | |
1424 | } | |
1425 | ||
1426 | ||
1427 | /* | |
1428 | * Flush all the virtual services | |
1429 | */ | |
578bc3ef | 1430 | static int ip_vs_flush(struct net *net, bool cleanup) |
1da177e4 LT |
1431 | { |
1432 | int idx; | |
ceec4c38 JA |
1433 | struct ip_vs_service *svc; |
1434 | struct hlist_node *n; | |
1da177e4 LT |
1435 | |
1436 | /* | |
fc723250 | 1437 | * Flush the service table hashed by <netns,protocol,addr,port> |
1da177e4 LT |
1438 | */ |
1439 | for(idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { | |
ceec4c38 JA |
1440 | hlist_for_each_entry_safe(svc, n, &ip_vs_svc_table[idx], |
1441 | s_list) { | |
fc723250 | 1442 | if (net_eq(svc->net, net)) |
578bc3ef | 1443 | ip_vs_unlink_service(svc, cleanup); |
1da177e4 LT |
1444 | } |
1445 | } | |
1446 | ||
1447 | /* | |
1448 | * Flush the service table hashed by fwmark | |
1449 | */ | |
1450 | for(idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { | |
ceec4c38 JA |
1451 | hlist_for_each_entry_safe(svc, n, &ip_vs_svc_fwm_table[idx], |
1452 | f_list) { | |
fc723250 | 1453 | if (net_eq(svc->net, net)) |
578bc3ef | 1454 | ip_vs_unlink_service(svc, cleanup); |
1da177e4 LT |
1455 | } |
1456 | } | |
1457 | ||
1458 | return 0; | |
1459 | } | |
1460 | ||
7a4f0761 HS |
1461 | /* |
1462 | * Delete service by {netns} in the service table. | |
1463 | * Called by __ip_vs_cleanup() | |
1464 | */ | |
503cf15a | 1465 | void ip_vs_service_net_cleanup(struct net *net) |
7a4f0761 HS |
1466 | { |
1467 | EnterFunction(2); | |
1468 | /* Check for "full" addressed entries */ | |
1469 | mutex_lock(&__ip_vs_mutex); | |
578bc3ef | 1470 | ip_vs_flush(net, true); |
7a4f0761 HS |
1471 | mutex_unlock(&__ip_vs_mutex); |
1472 | LeaveFunction(2); | |
1473 | } | |
d1deae4d JA |
1474 | |
1475 | /* Put all references for device (dst_cache) */ | |
7a4f0761 | 1476 | static inline void |
d1deae4d | 1477 | ip_vs_forget_dev(struct ip_vs_dest *dest, struct net_device *dev) |
7a4f0761 | 1478 | { |
d717bb2a JA |
1479 | struct ip_vs_dest_dst *dest_dst; |
1480 | ||
7a4f0761 | 1481 | spin_lock_bh(&dest->dst_lock); |
d717bb2a JA |
1482 | dest_dst = rcu_dereference_protected(dest->dest_dst, 1); |
1483 | if (dest_dst && dest_dst->dst_cache->dev == dev) { | |
7a4f0761 HS |
1484 | IP_VS_DBG_BUF(3, "Reset dev:%s dest %s:%u ,dest->refcnt=%d\n", |
1485 | dev->name, | |
1486 | IP_VS_DBG_ADDR(dest->af, &dest->addr), | |
1487 | ntohs(dest->port), | |
1488 | atomic_read(&dest->refcnt)); | |
d1deae4d | 1489 | __ip_vs_dst_cache_reset(dest); |
7a4f0761 HS |
1490 | } |
1491 | spin_unlock_bh(&dest->dst_lock); | |
1492 | ||
1493 | } | |
313eae63 JA |
1494 | /* Netdev event receiver |
1495 | * Currently only NETDEV_DOWN is handled to release refs to cached dsts | |
7a4f0761 HS |
1496 | */ |
1497 | static int ip_vs_dst_event(struct notifier_block *this, unsigned long event, | |
351638e7 | 1498 | void *ptr) |
7a4f0761 | 1499 | { |
351638e7 | 1500 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
7a4f0761 | 1501 | struct net *net = dev_net(dev); |
283283c4 | 1502 | struct netns_ipvs *ipvs = net_ipvs(net); |
7a4f0761 HS |
1503 | struct ip_vs_service *svc; |
1504 | struct ip_vs_dest *dest; | |
1505 | unsigned int idx; | |
1506 | ||
313eae63 | 1507 | if (event != NETDEV_DOWN || !ipvs) |
7a4f0761 HS |
1508 | return NOTIFY_DONE; |
1509 | IP_VS_DBG(3, "%s() dev=%s\n", __func__, dev->name); | |
1510 | EnterFunction(2); | |
1511 | mutex_lock(&__ip_vs_mutex); | |
1512 | for (idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { | |
ceec4c38 | 1513 | hlist_for_each_entry(svc, &ip_vs_svc_table[idx], s_list) { |
7a4f0761 HS |
1514 | if (net_eq(svc->net, net)) { |
1515 | list_for_each_entry(dest, &svc->destinations, | |
1516 | n_list) { | |
d1deae4d | 1517 | ip_vs_forget_dev(dest, dev); |
7a4f0761 HS |
1518 | } |
1519 | } | |
1520 | } | |
1521 | ||
ceec4c38 | 1522 | hlist_for_each_entry(svc, &ip_vs_svc_fwm_table[idx], f_list) { |
7a4f0761 HS |
1523 | if (net_eq(svc->net, net)) { |
1524 | list_for_each_entry(dest, &svc->destinations, | |
1525 | n_list) { | |
d1deae4d | 1526 | ip_vs_forget_dev(dest, dev); |
7a4f0761 HS |
1527 | } |
1528 | } | |
1529 | ||
1530 | } | |
1531 | } | |
1532 | ||
578bc3ef JA |
1533 | spin_lock_bh(&ipvs->dest_trash_lock); |
1534 | list_for_each_entry(dest, &ipvs->dest_trash, t_list) { | |
d1deae4d | 1535 | ip_vs_forget_dev(dest, dev); |
7a4f0761 | 1536 | } |
578bc3ef | 1537 | spin_unlock_bh(&ipvs->dest_trash_lock); |
7a4f0761 HS |
1538 | mutex_unlock(&__ip_vs_mutex); |
1539 | LeaveFunction(2); | |
1540 | return NOTIFY_DONE; | |
1541 | } | |
1da177e4 LT |
1542 | |
1543 | /* | |
1544 | * Zero counters in a service or all services | |
1545 | */ | |
1546 | static int ip_vs_zero_service(struct ip_vs_service *svc) | |
1547 | { | |
1548 | struct ip_vs_dest *dest; | |
1549 | ||
1da177e4 LT |
1550 | list_for_each_entry(dest, &svc->destinations, n_list) { |
1551 | ip_vs_zero_stats(&dest->stats); | |
1552 | } | |
1553 | ip_vs_zero_stats(&svc->stats); | |
1da177e4 LT |
1554 | return 0; |
1555 | } | |
1556 | ||
fc723250 | 1557 | static int ip_vs_zero_all(struct net *net) |
1da177e4 LT |
1558 | { |
1559 | int idx; | |
1560 | struct ip_vs_service *svc; | |
1561 | ||
1562 | for(idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { | |
ceec4c38 | 1563 | hlist_for_each_entry(svc, &ip_vs_svc_table[idx], s_list) { |
fc723250 HS |
1564 | if (net_eq(svc->net, net)) |
1565 | ip_vs_zero_service(svc); | |
1da177e4 LT |
1566 | } |
1567 | } | |
1568 | ||
1569 | for(idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { | |
ceec4c38 | 1570 | hlist_for_each_entry(svc, &ip_vs_svc_fwm_table[idx], f_list) { |
fc723250 HS |
1571 | if (net_eq(svc->net, net)) |
1572 | ip_vs_zero_service(svc); | |
1da177e4 LT |
1573 | } |
1574 | } | |
1575 | ||
2a0751af | 1576 | ip_vs_zero_stats(&net_ipvs(net)->tot_stats); |
1da177e4 LT |
1577 | return 0; |
1578 | } | |
1579 | ||
14e40546 | 1580 | #ifdef CONFIG_SYSCTL |
749c42b6 JA |
1581 | |
1582 | static int zero; | |
1583 | static int three = 3; | |
1584 | ||
1da177e4 | 1585 | static int |
fe2c6338 | 1586 | proc_do_defense_mode(struct ctl_table *table, int write, |
1da177e4 LT |
1587 | void __user *buffer, size_t *lenp, loff_t *ppos) |
1588 | { | |
9330419d | 1589 | struct net *net = current->nsproxy->net_ns; |
1da177e4 LT |
1590 | int *valp = table->data; |
1591 | int val = *valp; | |
1592 | int rc; | |
1593 | ||
8d65af78 | 1594 | rc = proc_dointvec(table, write, buffer, lenp, ppos); |
1da177e4 LT |
1595 | if (write && (*valp != val)) { |
1596 | if ((*valp < 0) || (*valp > 3)) { | |
1597 | /* Restore the correct value */ | |
1598 | *valp = val; | |
1599 | } else { | |
9330419d | 1600 | update_defense_level(net_ipvs(net)); |
1da177e4 LT |
1601 | } |
1602 | } | |
1603 | return rc; | |
1604 | } | |
1605 | ||
1da177e4 | 1606 | static int |
fe2c6338 | 1607 | proc_do_sync_threshold(struct ctl_table *table, int write, |
1da177e4 LT |
1608 | void __user *buffer, size_t *lenp, loff_t *ppos) |
1609 | { | |
1610 | int *valp = table->data; | |
1611 | int val[2]; | |
1612 | int rc; | |
1613 | ||
1614 | /* backup the value first */ | |
1615 | memcpy(val, valp, sizeof(val)); | |
1616 | ||
8d65af78 | 1617 | rc = proc_dointvec(table, write, buffer, lenp, ppos); |
749c42b6 JA |
1618 | if (write && (valp[0] < 0 || valp[1] < 0 || |
1619 | (valp[0] >= valp[1] && valp[1]))) { | |
1da177e4 LT |
1620 | /* Restore the correct value */ |
1621 | memcpy(valp, val, sizeof(val)); | |
1622 | } | |
1623 | return rc; | |
1624 | } | |
1625 | ||
b880c1f0 | 1626 | static int |
fe2c6338 | 1627 | proc_do_sync_mode(struct ctl_table *table, int write, |
b880c1f0 HS |
1628 | void __user *buffer, size_t *lenp, loff_t *ppos) |
1629 | { | |
1630 | int *valp = table->data; | |
1631 | int val = *valp; | |
1632 | int rc; | |
1633 | ||
1634 | rc = proc_dointvec(table, write, buffer, lenp, ppos); | |
1635 | if (write && (*valp != val)) { | |
1636 | if ((*valp < 0) || (*valp > 1)) { | |
1637 | /* Restore the correct value */ | |
1638 | *valp = val; | |
f73181c8 PNA |
1639 | } |
1640 | } | |
1641 | return rc; | |
1642 | } | |
1643 | ||
1644 | static int | |
fe2c6338 | 1645 | proc_do_sync_ports(struct ctl_table *table, int write, |
f73181c8 PNA |
1646 | void __user *buffer, size_t *lenp, loff_t *ppos) |
1647 | { | |
1648 | int *valp = table->data; | |
1649 | int val = *valp; | |
1650 | int rc; | |
1651 | ||
1652 | rc = proc_dointvec(table, write, buffer, lenp, ppos); | |
1653 | if (write && (*valp != val)) { | |
1654 | if (*valp < 1 || !is_power_of_2(*valp)) { | |
1655 | /* Restore the correct value */ | |
1656 | *valp = val; | |
b880c1f0 HS |
1657 | } |
1658 | } | |
1659 | return rc; | |
1660 | } | |
1da177e4 LT |
1661 | |
1662 | /* | |
1663 | * IPVS sysctl table (under the /proc/sys/net/ipv4/vs/) | |
a0840e2e | 1664 | * Do not change order or insert new entries without |
503cf15a | 1665 | * align with netns init in ip_vs_control_net_init() |
1da177e4 LT |
1666 | */ |
1667 | ||
1668 | static struct ctl_table vs_vars[] = { | |
1669 | { | |
1da177e4 | 1670 | .procname = "amemthresh", |
1da177e4 LT |
1671 | .maxlen = sizeof(int), |
1672 | .mode = 0644, | |
6d9f239a | 1673 | .proc_handler = proc_dointvec, |
1da177e4 | 1674 | }, |
1da177e4 | 1675 | { |
1da177e4 | 1676 | .procname = "am_droprate", |
1da177e4 LT |
1677 | .maxlen = sizeof(int), |
1678 | .mode = 0644, | |
6d9f239a | 1679 | .proc_handler = proc_dointvec, |
1da177e4 LT |
1680 | }, |
1681 | { | |
1da177e4 | 1682 | .procname = "drop_entry", |
1da177e4 LT |
1683 | .maxlen = sizeof(int), |
1684 | .mode = 0644, | |
6d9f239a | 1685 | .proc_handler = proc_do_defense_mode, |
1da177e4 LT |
1686 | }, |
1687 | { | |
1da177e4 | 1688 | .procname = "drop_packet", |
1da177e4 LT |
1689 | .maxlen = sizeof(int), |
1690 | .mode = 0644, | |
6d9f239a | 1691 | .proc_handler = proc_do_defense_mode, |
1da177e4 | 1692 | }, |
f4bc17cd JA |
1693 | #ifdef CONFIG_IP_VS_NFCT |
1694 | { | |
1695 | .procname = "conntrack", | |
f4bc17cd JA |
1696 | .maxlen = sizeof(int), |
1697 | .mode = 0644, | |
1698 | .proc_handler = &proc_dointvec, | |
1699 | }, | |
1700 | #endif | |
1da177e4 | 1701 | { |
1da177e4 | 1702 | .procname = "secure_tcp", |
1da177e4 LT |
1703 | .maxlen = sizeof(int), |
1704 | .mode = 0644, | |
6d9f239a | 1705 | .proc_handler = proc_do_defense_mode, |
1da177e4 | 1706 | }, |
8a803040 JA |
1707 | { |
1708 | .procname = "snat_reroute", | |
8a803040 JA |
1709 | .maxlen = sizeof(int), |
1710 | .mode = 0644, | |
1711 | .proc_handler = &proc_dointvec, | |
1712 | }, | |
b880c1f0 HS |
1713 | { |
1714 | .procname = "sync_version", | |
b880c1f0 HS |
1715 | .maxlen = sizeof(int), |
1716 | .mode = 0644, | |
1717 | .proc_handler = &proc_do_sync_mode, | |
1718 | }, | |
f73181c8 PNA |
1719 | { |
1720 | .procname = "sync_ports", | |
1721 | .maxlen = sizeof(int), | |
1722 | .mode = 0644, | |
1723 | .proc_handler = &proc_do_sync_ports, | |
1724 | }, | |
4d0c875d JA |
1725 | { |
1726 | .procname = "sync_persist_mode", | |
1727 | .maxlen = sizeof(int), | |
1728 | .mode = 0644, | |
1729 | .proc_handler = proc_dointvec, | |
1730 | }, | |
1c003b15 PNA |
1731 | { |
1732 | .procname = "sync_qlen_max", | |
07995674 | 1733 | .maxlen = sizeof(unsigned long), |
1c003b15 | 1734 | .mode = 0644, |
07995674 | 1735 | .proc_handler = proc_doulongvec_minmax, |
1c003b15 PNA |
1736 | }, |
1737 | { | |
1738 | .procname = "sync_sock_size", | |
1739 | .maxlen = sizeof(int), | |
1740 | .mode = 0644, | |
1741 | .proc_handler = proc_dointvec, | |
1742 | }, | |
a0840e2e HS |
1743 | { |
1744 | .procname = "cache_bypass", | |
1745 | .maxlen = sizeof(int), | |
1746 | .mode = 0644, | |
1747 | .proc_handler = proc_dointvec, | |
1748 | }, | |
1749 | { | |
1750 | .procname = "expire_nodest_conn", | |
1751 | .maxlen = sizeof(int), | |
1752 | .mode = 0644, | |
1753 | .proc_handler = proc_dointvec, | |
1754 | }, | |
c6c96c18 AF |
1755 | { |
1756 | .procname = "sloppy_tcp", | |
1757 | .maxlen = sizeof(int), | |
1758 | .mode = 0644, | |
1759 | .proc_handler = proc_dointvec, | |
1760 | }, | |
1761 | { | |
1762 | .procname = "sloppy_sctp", | |
1763 | .maxlen = sizeof(int), | |
1764 | .mode = 0644, | |
1765 | .proc_handler = proc_dointvec, | |
1766 | }, | |
a0840e2e HS |
1767 | { |
1768 | .procname = "expire_quiescent_template", | |
1769 | .maxlen = sizeof(int), | |
1770 | .mode = 0644, | |
1771 | .proc_handler = proc_dointvec, | |
1772 | }, | |
1773 | { | |
1774 | .procname = "sync_threshold", | |
1775 | .maxlen = | |
1776 | sizeof(((struct netns_ipvs *)0)->sysctl_sync_threshold), | |
1777 | .mode = 0644, | |
1778 | .proc_handler = proc_do_sync_threshold, | |
1779 | }, | |
749c42b6 JA |
1780 | { |
1781 | .procname = "sync_refresh_period", | |
1782 | .maxlen = sizeof(int), | |
1783 | .mode = 0644, | |
1784 | .proc_handler = proc_dointvec_jiffies, | |
1785 | }, | |
1786 | { | |
1787 | .procname = "sync_retries", | |
1788 | .maxlen = sizeof(int), | |
1789 | .mode = 0644, | |
1790 | .proc_handler = proc_dointvec_minmax, | |
1791 | .extra1 = &zero, | |
1792 | .extra2 = &three, | |
1793 | }, | |
a0840e2e HS |
1794 | { |
1795 | .procname = "nat_icmp_send", | |
1796 | .maxlen = sizeof(int), | |
1797 | .mode = 0644, | |
1798 | .proc_handler = proc_dointvec, | |
1799 | }, | |
3654e611 JA |
1800 | { |
1801 | .procname = "pmtu_disc", | |
1802 | .maxlen = sizeof(int), | |
1803 | .mode = 0644, | |
1804 | .proc_handler = proc_dointvec, | |
1805 | }, | |
0c12582f JA |
1806 | { |
1807 | .procname = "backup_only", | |
1808 | .maxlen = sizeof(int), | |
1809 | .mode = 0644, | |
1810 | .proc_handler = proc_dointvec, | |
1811 | }, | |
a0840e2e HS |
1812 | #ifdef CONFIG_IP_VS_DEBUG |
1813 | { | |
1814 | .procname = "debug_level", | |
1815 | .data = &sysctl_ip_vs_debug_level, | |
1816 | .maxlen = sizeof(int), | |
1817 | .mode = 0644, | |
1818 | .proc_handler = proc_dointvec, | |
1819 | }, | |
1da177e4 | 1820 | #endif |
f8572d8f | 1821 | { } |
1da177e4 LT |
1822 | }; |
1823 | ||
14e40546 | 1824 | #endif |
1da177e4 | 1825 | |
1da177e4 LT |
1826 | #ifdef CONFIG_PROC_FS |
1827 | ||
1828 | struct ip_vs_iter { | |
fc723250 | 1829 | struct seq_net_private p; /* Do not move this, netns depends upon it*/ |
ceec4c38 | 1830 | struct hlist_head *table; |
1da177e4 LT |
1831 | int bucket; |
1832 | }; | |
1833 | ||
1834 | /* | |
1835 | * Write the contents of the VS rule table to a PROCfs file. | |
1836 | * (It is kept just for backward compatibility) | |
1837 | */ | |
95c96174 | 1838 | static inline const char *ip_vs_fwd_name(unsigned int flags) |
1da177e4 LT |
1839 | { |
1840 | switch (flags & IP_VS_CONN_F_FWD_MASK) { | |
1841 | case IP_VS_CONN_F_LOCALNODE: | |
1842 | return "Local"; | |
1843 | case IP_VS_CONN_F_TUNNEL: | |
1844 | return "Tunnel"; | |
1845 | case IP_VS_CONN_F_DROUTE: | |
1846 | return "Route"; | |
1847 | default: | |
1848 | return "Masq"; | |
1849 | } | |
1850 | } | |
1851 | ||
1852 | ||
1853 | /* Get the Nth entry in the two lists */ | |
1854 | static struct ip_vs_service *ip_vs_info_array(struct seq_file *seq, loff_t pos) | |
1855 | { | |
fc723250 | 1856 | struct net *net = seq_file_net(seq); |
1da177e4 LT |
1857 | struct ip_vs_iter *iter = seq->private; |
1858 | int idx; | |
1859 | struct ip_vs_service *svc; | |
1860 | ||
1861 | /* look in hash by protocol */ | |
1862 | for (idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { | |
ceec4c38 | 1863 | hlist_for_each_entry_rcu(svc, &ip_vs_svc_table[idx], s_list) { |
fc723250 | 1864 | if (net_eq(svc->net, net) && pos-- == 0) { |
1da177e4 LT |
1865 | iter->table = ip_vs_svc_table; |
1866 | iter->bucket = idx; | |
1867 | return svc; | |
1868 | } | |
1869 | } | |
1870 | } | |
1871 | ||
1872 | /* keep looking in fwmark */ | |
1873 | for (idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { | |
ceec4c38 JA |
1874 | hlist_for_each_entry_rcu(svc, &ip_vs_svc_fwm_table[idx], |
1875 | f_list) { | |
fc723250 | 1876 | if (net_eq(svc->net, net) && pos-- == 0) { |
1da177e4 LT |
1877 | iter->table = ip_vs_svc_fwm_table; |
1878 | iter->bucket = idx; | |
1879 | return svc; | |
1880 | } | |
1881 | } | |
1882 | } | |
1883 | ||
1884 | return NULL; | |
1885 | } | |
1886 | ||
1887 | static void *ip_vs_info_seq_start(struct seq_file *seq, loff_t *pos) | |
371990ee | 1888 | __acquires(RCU) |
1da177e4 | 1889 | { |
ceec4c38 | 1890 | rcu_read_lock(); |
1da177e4 LT |
1891 | return *pos ? ip_vs_info_array(seq, *pos - 1) : SEQ_START_TOKEN; |
1892 | } | |
1893 | ||
1894 | ||
1895 | static void *ip_vs_info_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
1896 | { | |
ceec4c38 | 1897 | struct hlist_node *e; |
1da177e4 LT |
1898 | struct ip_vs_iter *iter; |
1899 | struct ip_vs_service *svc; | |
1900 | ||
1901 | ++*pos; | |
1902 | if (v == SEQ_START_TOKEN) | |
1903 | return ip_vs_info_array(seq,0); | |
1904 | ||
1905 | svc = v; | |
1906 | iter = seq->private; | |
1907 | ||
1908 | if (iter->table == ip_vs_svc_table) { | |
1909 | /* next service in table hashed by protocol */ | |
ceec4c38 JA |
1910 | e = rcu_dereference(hlist_next_rcu(&svc->s_list)); |
1911 | if (e) | |
1912 | return hlist_entry(e, struct ip_vs_service, s_list); | |
1da177e4 LT |
1913 | |
1914 | while (++iter->bucket < IP_VS_SVC_TAB_SIZE) { | |
ceec4c38 JA |
1915 | hlist_for_each_entry_rcu(svc, |
1916 | &ip_vs_svc_table[iter->bucket], | |
1917 | s_list) { | |
1da177e4 LT |
1918 | return svc; |
1919 | } | |
1920 | } | |
1921 | ||
1922 | iter->table = ip_vs_svc_fwm_table; | |
1923 | iter->bucket = -1; | |
1924 | goto scan_fwmark; | |
1925 | } | |
1926 | ||
1927 | /* next service in hashed by fwmark */ | |
ceec4c38 JA |
1928 | e = rcu_dereference(hlist_next_rcu(&svc->f_list)); |
1929 | if (e) | |
1930 | return hlist_entry(e, struct ip_vs_service, f_list); | |
1da177e4 LT |
1931 | |
1932 | scan_fwmark: | |
1933 | while (++iter->bucket < IP_VS_SVC_TAB_SIZE) { | |
ceec4c38 JA |
1934 | hlist_for_each_entry_rcu(svc, |
1935 | &ip_vs_svc_fwm_table[iter->bucket], | |
1936 | f_list) | |
1da177e4 LT |
1937 | return svc; |
1938 | } | |
1939 | ||
1940 | return NULL; | |
1941 | } | |
1942 | ||
1943 | static void ip_vs_info_seq_stop(struct seq_file *seq, void *v) | |
371990ee | 1944 | __releases(RCU) |
1da177e4 | 1945 | { |
ceec4c38 | 1946 | rcu_read_unlock(); |
1da177e4 LT |
1947 | } |
1948 | ||
1949 | ||
1950 | static int ip_vs_info_seq_show(struct seq_file *seq, void *v) | |
1951 | { | |
1952 | if (v == SEQ_START_TOKEN) { | |
1953 | seq_printf(seq, | |
1954 | "IP Virtual Server version %d.%d.%d (size=%d)\n", | |
6f7edb48 | 1955 | NVERSION(IP_VS_VERSION_CODE), ip_vs_conn_tab_size); |
1da177e4 LT |
1956 | seq_puts(seq, |
1957 | "Prot LocalAddress:Port Scheduler Flags\n"); | |
1958 | seq_puts(seq, | |
1959 | " -> RemoteAddress:Port Forward Weight ActiveConn InActConn\n"); | |
1960 | } else { | |
1961 | const struct ip_vs_service *svc = v; | |
1962 | const struct ip_vs_iter *iter = seq->private; | |
1963 | const struct ip_vs_dest *dest; | |
ceec4c38 | 1964 | struct ip_vs_scheduler *sched = rcu_dereference(svc->scheduler); |
1da177e4 | 1965 | |
667a5f18 VB |
1966 | if (iter->table == ip_vs_svc_table) { |
1967 | #ifdef CONFIG_IP_VS_IPV6 | |
1968 | if (svc->af == AF_INET6) | |
5b095d98 | 1969 | seq_printf(seq, "%s [%pI6]:%04X %s ", |
667a5f18 | 1970 | ip_vs_proto_name(svc->protocol), |
38ff4fa4 | 1971 | &svc->addr.in6, |
667a5f18 | 1972 | ntohs(svc->port), |
ceec4c38 | 1973 | sched->name); |
667a5f18 VB |
1974 | else |
1975 | #endif | |
26ec037f | 1976 | seq_printf(seq, "%s %08X:%04X %s %s ", |
667a5f18 VB |
1977 | ip_vs_proto_name(svc->protocol), |
1978 | ntohl(svc->addr.ip), | |
1979 | ntohs(svc->port), | |
ceec4c38 | 1980 | sched->name, |
26ec037f | 1981 | (svc->flags & IP_VS_SVC_F_ONEPACKET)?"ops ":""); |
667a5f18 | 1982 | } else { |
26ec037f | 1983 | seq_printf(seq, "FWM %08X %s %s", |
ceec4c38 | 1984 | svc->fwmark, sched->name, |
26ec037f | 1985 | (svc->flags & IP_VS_SVC_F_ONEPACKET)?"ops ":""); |
667a5f18 | 1986 | } |
1da177e4 LT |
1987 | |
1988 | if (svc->flags & IP_VS_SVC_F_PERSISTENT) | |
1989 | seq_printf(seq, "persistent %d %08X\n", | |
1990 | svc->timeout, | |
1991 | ntohl(svc->netmask)); | |
1992 | else | |
1993 | seq_putc(seq, '\n'); | |
1994 | ||
413c2d04 | 1995 | list_for_each_entry_rcu(dest, &svc->destinations, n_list) { |
667a5f18 VB |
1996 | #ifdef CONFIG_IP_VS_IPV6 |
1997 | if (dest->af == AF_INET6) | |
1998 | seq_printf(seq, | |
5b095d98 | 1999 | " -> [%pI6]:%04X" |
667a5f18 | 2000 | " %-7s %-6d %-10d %-10d\n", |
38ff4fa4 | 2001 | &dest->addr.in6, |
667a5f18 VB |
2002 | ntohs(dest->port), |
2003 | ip_vs_fwd_name(atomic_read(&dest->conn_flags)), | |
2004 | atomic_read(&dest->weight), | |
2005 | atomic_read(&dest->activeconns), | |
2006 | atomic_read(&dest->inactconns)); | |
2007 | else | |
2008 | #endif | |
2009 | seq_printf(seq, | |
2010 | " -> %08X:%04X " | |
2011 | "%-7s %-6d %-10d %-10d\n", | |
2012 | ntohl(dest->addr.ip), | |
2013 | ntohs(dest->port), | |
2014 | ip_vs_fwd_name(atomic_read(&dest->conn_flags)), | |
2015 | atomic_read(&dest->weight), | |
2016 | atomic_read(&dest->activeconns), | |
2017 | atomic_read(&dest->inactconns)); | |
2018 | ||
1da177e4 LT |
2019 | } |
2020 | } | |
2021 | return 0; | |
2022 | } | |
2023 | ||
56b3d975 | 2024 | static const struct seq_operations ip_vs_info_seq_ops = { |
1da177e4 LT |
2025 | .start = ip_vs_info_seq_start, |
2026 | .next = ip_vs_info_seq_next, | |
2027 | .stop = ip_vs_info_seq_stop, | |
2028 | .show = ip_vs_info_seq_show, | |
2029 | }; | |
2030 | ||
2031 | static int ip_vs_info_open(struct inode *inode, struct file *file) | |
2032 | { | |
fc723250 | 2033 | return seq_open_net(inode, file, &ip_vs_info_seq_ops, |
cf7732e4 | 2034 | sizeof(struct ip_vs_iter)); |
1da177e4 LT |
2035 | } |
2036 | ||
9a32144e | 2037 | static const struct file_operations ip_vs_info_fops = { |
1da177e4 LT |
2038 | .owner = THIS_MODULE, |
2039 | .open = ip_vs_info_open, | |
2040 | .read = seq_read, | |
2041 | .llseek = seq_lseek, | |
0f08190f | 2042 | .release = seq_release_net, |
1da177e4 LT |
2043 | }; |
2044 | ||
1da177e4 LT |
2045 | static int ip_vs_stats_show(struct seq_file *seq, void *v) |
2046 | { | |
b17fc996 | 2047 | struct net *net = seq_file_single_net(seq); |
55a3d4e1 | 2048 | struct ip_vs_stats_user show; |
1da177e4 LT |
2049 | |
2050 | /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */ | |
2051 | seq_puts(seq, | |
2052 | " Total Incoming Outgoing Incoming Outgoing\n"); | |
2053 | seq_printf(seq, | |
2054 | " Conns Packets Packets Bytes Bytes\n"); | |
2055 | ||
55a3d4e1 JA |
2056 | ip_vs_copy_stats(&show, &net_ipvs(net)->tot_stats); |
2057 | seq_printf(seq, "%8X %8X %8X %16LX %16LX\n\n", show.conns, | |
2058 | show.inpkts, show.outpkts, | |
2059 | (unsigned long long) show.inbytes, | |
2060 | (unsigned long long) show.outbytes); | |
1da177e4 LT |
2061 | |
2062 | /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */ | |
2063 | seq_puts(seq, | |
2064 | " Conns/s Pkts/s Pkts/s Bytes/s Bytes/s\n"); | |
55a3d4e1 JA |
2065 | seq_printf(seq, "%8X %8X %8X %16X %16X\n", |
2066 | show.cps, show.inpps, show.outpps, | |
2067 | show.inbps, show.outbps); | |
1da177e4 LT |
2068 | |
2069 | return 0; | |
2070 | } | |
2071 | ||
2072 | static int ip_vs_stats_seq_open(struct inode *inode, struct file *file) | |
2073 | { | |
fc723250 | 2074 | return single_open_net(inode, file, ip_vs_stats_show); |
1da177e4 LT |
2075 | } |
2076 | ||
9a32144e | 2077 | static const struct file_operations ip_vs_stats_fops = { |
1da177e4 LT |
2078 | .owner = THIS_MODULE, |
2079 | .open = ip_vs_stats_seq_open, | |
2080 | .read = seq_read, | |
2081 | .llseek = seq_lseek, | |
0f08190f | 2082 | .release = single_release_net, |
1da177e4 LT |
2083 | }; |
2084 | ||
b17fc996 HS |
2085 | static int ip_vs_stats_percpu_show(struct seq_file *seq, void *v) |
2086 | { | |
2087 | struct net *net = seq_file_single_net(seq); | |
2a0751af | 2088 | struct ip_vs_stats *tot_stats = &net_ipvs(net)->tot_stats; |
371990ee | 2089 | struct ip_vs_cpu_stats __percpu *cpustats = tot_stats->cpustats; |
ea9f22cc | 2090 | struct ip_vs_stats_user rates; |
b17fc996 HS |
2091 | int i; |
2092 | ||
2093 | /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */ | |
2094 | seq_puts(seq, | |
2095 | " Total Incoming Outgoing Incoming Outgoing\n"); | |
2096 | seq_printf(seq, | |
2097 | "CPU Conns Packets Packets Bytes Bytes\n"); | |
2098 | ||
2099 | for_each_possible_cpu(i) { | |
2a0751af JA |
2100 | struct ip_vs_cpu_stats *u = per_cpu_ptr(cpustats, i); |
2101 | unsigned int start; | |
2102 | __u64 inbytes, outbytes; | |
2103 | ||
2104 | do { | |
57a7744e | 2105 | start = u64_stats_fetch_begin_irq(&u->syncp); |
2a0751af JA |
2106 | inbytes = u->ustats.inbytes; |
2107 | outbytes = u->ustats.outbytes; | |
57a7744e | 2108 | } while (u64_stats_fetch_retry_irq(&u->syncp, start)); |
2a0751af | 2109 | |
b17fc996 | 2110 | seq_printf(seq, "%3X %8X %8X %8X %16LX %16LX\n", |
2a0751af JA |
2111 | i, u->ustats.conns, u->ustats.inpkts, |
2112 | u->ustats.outpkts, (__u64)inbytes, | |
2113 | (__u64)outbytes); | |
b17fc996 HS |
2114 | } |
2115 | ||
2116 | spin_lock_bh(&tot_stats->lock); | |
ea9f22cc | 2117 | |
b17fc996 HS |
2118 | seq_printf(seq, " ~ %8X %8X %8X %16LX %16LX\n\n", |
2119 | tot_stats->ustats.conns, tot_stats->ustats.inpkts, | |
2120 | tot_stats->ustats.outpkts, | |
2121 | (unsigned long long) tot_stats->ustats.inbytes, | |
2122 | (unsigned long long) tot_stats->ustats.outbytes); | |
2123 | ||
ea9f22cc JA |
2124 | ip_vs_read_estimator(&rates, tot_stats); |
2125 | ||
2126 | spin_unlock_bh(&tot_stats->lock); | |
2127 | ||
b17fc996 HS |
2128 | /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */ |
2129 | seq_puts(seq, | |
2130 | " Conns/s Pkts/s Pkts/s Bytes/s Bytes/s\n"); | |
2131 | seq_printf(seq, " %8X %8X %8X %16X %16X\n", | |
ea9f22cc JA |
2132 | rates.cps, |
2133 | rates.inpps, | |
2134 | rates.outpps, | |
2135 | rates.inbps, | |
2136 | rates.outbps); | |
b17fc996 HS |
2137 | |
2138 | return 0; | |
2139 | } | |
2140 | ||
2141 | static int ip_vs_stats_percpu_seq_open(struct inode *inode, struct file *file) | |
2142 | { | |
2143 | return single_open_net(inode, file, ip_vs_stats_percpu_show); | |
2144 | } | |
2145 | ||
2146 | static const struct file_operations ip_vs_stats_percpu_fops = { | |
2147 | .owner = THIS_MODULE, | |
2148 | .open = ip_vs_stats_percpu_seq_open, | |
2149 | .read = seq_read, | |
2150 | .llseek = seq_lseek, | |
0f08190f | 2151 | .release = single_release_net, |
b17fc996 | 2152 | }; |
1da177e4 LT |
2153 | #endif |
2154 | ||
2155 | /* | |
2156 | * Set timeout values for tcp tcpfin udp in the timeout_table. | |
2157 | */ | |
9330419d | 2158 | static int ip_vs_set_timeout(struct net *net, struct ip_vs_timeout_user *u) |
1da177e4 | 2159 | { |
091bb34c | 2160 | #if defined(CONFIG_IP_VS_PROTO_TCP) || defined(CONFIG_IP_VS_PROTO_UDP) |
9330419d | 2161 | struct ip_vs_proto_data *pd; |
091bb34c | 2162 | #endif |
9330419d | 2163 | |
1da177e4 LT |
2164 | IP_VS_DBG(2, "Setting timeout tcp:%d tcpfin:%d udp:%d\n", |
2165 | u->tcp_timeout, | |
2166 | u->tcp_fin_timeout, | |
2167 | u->udp_timeout); | |
2168 | ||
2169 | #ifdef CONFIG_IP_VS_PROTO_TCP | |
2170 | if (u->tcp_timeout) { | |
9330419d HS |
2171 | pd = ip_vs_proto_data_get(net, IPPROTO_TCP); |
2172 | pd->timeout_table[IP_VS_TCP_S_ESTABLISHED] | |
1da177e4 LT |
2173 | = u->tcp_timeout * HZ; |
2174 | } | |
2175 | ||
2176 | if (u->tcp_fin_timeout) { | |
9330419d HS |
2177 | pd = ip_vs_proto_data_get(net, IPPROTO_TCP); |
2178 | pd->timeout_table[IP_VS_TCP_S_FIN_WAIT] | |
1da177e4 LT |
2179 | = u->tcp_fin_timeout * HZ; |
2180 | } | |
2181 | #endif | |
2182 | ||
2183 | #ifdef CONFIG_IP_VS_PROTO_UDP | |
2184 | if (u->udp_timeout) { | |
9330419d HS |
2185 | pd = ip_vs_proto_data_get(net, IPPROTO_UDP); |
2186 | pd->timeout_table[IP_VS_UDP_S_NORMAL] | |
1da177e4 LT |
2187 | = u->udp_timeout * HZ; |
2188 | } | |
2189 | #endif | |
2190 | return 0; | |
2191 | } | |
2192 | ||
5fcf0cf6 | 2193 | #define CMDID(cmd) (cmd - IP_VS_BASE_CTL) |
1da177e4 | 2194 | |
5fcf0cf6 JA |
2195 | struct ip_vs_svcdest_user { |
2196 | struct ip_vs_service_user s; | |
2197 | struct ip_vs_dest_user d; | |
1da177e4 LT |
2198 | }; |
2199 | ||
5fcf0cf6 JA |
2200 | static const unsigned char set_arglen[CMDID(IP_VS_SO_SET_MAX) + 1] = { |
2201 | [CMDID(IP_VS_SO_SET_ADD)] = sizeof(struct ip_vs_service_user), | |
2202 | [CMDID(IP_VS_SO_SET_EDIT)] = sizeof(struct ip_vs_service_user), | |
2203 | [CMDID(IP_VS_SO_SET_DEL)] = sizeof(struct ip_vs_service_user), | |
2204 | [CMDID(IP_VS_SO_SET_ADDDEST)] = sizeof(struct ip_vs_svcdest_user), | |
2205 | [CMDID(IP_VS_SO_SET_DELDEST)] = sizeof(struct ip_vs_svcdest_user), | |
2206 | [CMDID(IP_VS_SO_SET_EDITDEST)] = sizeof(struct ip_vs_svcdest_user), | |
2207 | [CMDID(IP_VS_SO_SET_TIMEOUT)] = sizeof(struct ip_vs_timeout_user), | |
2208 | [CMDID(IP_VS_SO_SET_STARTDAEMON)] = sizeof(struct ip_vs_daemon_user), | |
2209 | [CMDID(IP_VS_SO_SET_STOPDAEMON)] = sizeof(struct ip_vs_daemon_user), | |
2210 | [CMDID(IP_VS_SO_SET_ZERO)] = sizeof(struct ip_vs_service_user), | |
2211 | }; | |
2212 | ||
2213 | union ip_vs_set_arglen { | |
2214 | struct ip_vs_service_user field_IP_VS_SO_SET_ADD; | |
2215 | struct ip_vs_service_user field_IP_VS_SO_SET_EDIT; | |
2216 | struct ip_vs_service_user field_IP_VS_SO_SET_DEL; | |
2217 | struct ip_vs_svcdest_user field_IP_VS_SO_SET_ADDDEST; | |
2218 | struct ip_vs_svcdest_user field_IP_VS_SO_SET_DELDEST; | |
2219 | struct ip_vs_svcdest_user field_IP_VS_SO_SET_EDITDEST; | |
2220 | struct ip_vs_timeout_user field_IP_VS_SO_SET_TIMEOUT; | |
2221 | struct ip_vs_daemon_user field_IP_VS_SO_SET_STARTDAEMON; | |
2222 | struct ip_vs_daemon_user field_IP_VS_SO_SET_STOPDAEMON; | |
2223 | struct ip_vs_service_user field_IP_VS_SO_SET_ZERO; | |
2224 | }; | |
2225 | ||
2226 | #define MAX_SET_ARGLEN sizeof(union ip_vs_set_arglen) | |
2227 | ||
c860c6b1 JV |
2228 | static void ip_vs_copy_usvc_compat(struct ip_vs_service_user_kern *usvc, |
2229 | struct ip_vs_service_user *usvc_compat) | |
2230 | { | |
0d1e71b0 SH |
2231 | memset(usvc, 0, sizeof(*usvc)); |
2232 | ||
c860c6b1 JV |
2233 | usvc->af = AF_INET; |
2234 | usvc->protocol = usvc_compat->protocol; | |
2235 | usvc->addr.ip = usvc_compat->addr; | |
2236 | usvc->port = usvc_compat->port; | |
2237 | usvc->fwmark = usvc_compat->fwmark; | |
2238 | ||
2239 | /* Deep copy of sched_name is not needed here */ | |
2240 | usvc->sched_name = usvc_compat->sched_name; | |
2241 | ||
2242 | usvc->flags = usvc_compat->flags; | |
2243 | usvc->timeout = usvc_compat->timeout; | |
2244 | usvc->netmask = usvc_compat->netmask; | |
2245 | } | |
2246 | ||
2247 | static void ip_vs_copy_udest_compat(struct ip_vs_dest_user_kern *udest, | |
2248 | struct ip_vs_dest_user *udest_compat) | |
2249 | { | |
0d1e71b0 SH |
2250 | memset(udest, 0, sizeof(*udest)); |
2251 | ||
c860c6b1 JV |
2252 | udest->addr.ip = udest_compat->addr; |
2253 | udest->port = udest_compat->port; | |
2254 | udest->conn_flags = udest_compat->conn_flags; | |
2255 | udest->weight = udest_compat->weight; | |
2256 | udest->u_threshold = udest_compat->u_threshold; | |
2257 | udest->l_threshold = udest_compat->l_threshold; | |
6cff339b | 2258 | udest->af = AF_INET; |
c860c6b1 JV |
2259 | } |
2260 | ||
1da177e4 LT |
2261 | static int |
2262 | do_ip_vs_set_ctl(struct sock *sk, int cmd, void __user *user, unsigned int len) | |
2263 | { | |
fc723250 | 2264 | struct net *net = sock_net(sk); |
1da177e4 | 2265 | int ret; |
5fcf0cf6 | 2266 | unsigned char arg[MAX_SET_ARGLEN]; |
c860c6b1 JV |
2267 | struct ip_vs_service_user *usvc_compat; |
2268 | struct ip_vs_service_user_kern usvc; | |
1da177e4 | 2269 | struct ip_vs_service *svc; |
c860c6b1 JV |
2270 | struct ip_vs_dest_user *udest_compat; |
2271 | struct ip_vs_dest_user_kern udest; | |
ae1d48b2 | 2272 | struct netns_ipvs *ipvs = net_ipvs(net); |
1da177e4 | 2273 | |
5fcf0cf6 | 2274 | BUILD_BUG_ON(sizeof(arg) > 255); |
df008c91 | 2275 | if (!ns_capable(sock_net(sk)->user_ns, CAP_NET_ADMIN)) |
1da177e4 LT |
2276 | return -EPERM; |
2277 | ||
04bcef2a AV |
2278 | if (cmd < IP_VS_BASE_CTL || cmd > IP_VS_SO_SET_MAX) |
2279 | return -EINVAL; | |
5fcf0cf6 JA |
2280 | if (len != set_arglen[CMDID(cmd)]) { |
2281 | IP_VS_DBG(1, "set_ctl: len %u != %u\n", | |
2282 | len, set_arglen[CMDID(cmd)]); | |
1da177e4 LT |
2283 | return -EINVAL; |
2284 | } | |
2285 | ||
2286 | if (copy_from_user(arg, user, len) != 0) | |
2287 | return -EFAULT; | |
2288 | ||
2289 | /* increase the module use count */ | |
2290 | ip_vs_use_count_inc(); | |
2291 | ||
ae1d48b2 HS |
2292 | /* Handle daemons since they have another lock */ |
2293 | if (cmd == IP_VS_SO_SET_STARTDAEMON || | |
2294 | cmd == IP_VS_SO_SET_STOPDAEMON) { | |
2295 | struct ip_vs_daemon_user *dm = (struct ip_vs_daemon_user *)arg; | |
2296 | ||
7926dbfa | 2297 | mutex_lock(&ipvs->sync_mutex); |
ae1d48b2 HS |
2298 | if (cmd == IP_VS_SO_SET_STARTDAEMON) |
2299 | ret = start_sync_thread(net, dm->state, dm->mcast_ifn, | |
2300 | dm->syncid); | |
2301 | else | |
2302 | ret = stop_sync_thread(net, dm->state); | |
2303 | mutex_unlock(&ipvs->sync_mutex); | |
2304 | goto out_dec; | |
2305 | } | |
2306 | ||
7926dbfa | 2307 | mutex_lock(&__ip_vs_mutex); |
1da177e4 LT |
2308 | if (cmd == IP_VS_SO_SET_FLUSH) { |
2309 | /* Flush the virtual service */ | |
578bc3ef | 2310 | ret = ip_vs_flush(net, false); |
1da177e4 LT |
2311 | goto out_unlock; |
2312 | } else if (cmd == IP_VS_SO_SET_TIMEOUT) { | |
2313 | /* Set timeout values for (tcp tcpfin udp) */ | |
9330419d | 2314 | ret = ip_vs_set_timeout(net, (struct ip_vs_timeout_user *)arg); |
1da177e4 | 2315 | goto out_unlock; |
1da177e4 LT |
2316 | } |
2317 | ||
c860c6b1 JV |
2318 | usvc_compat = (struct ip_vs_service_user *)arg; |
2319 | udest_compat = (struct ip_vs_dest_user *)(usvc_compat + 1); | |
2320 | ||
2321 | /* We only use the new structs internally, so copy userspace compat | |
2322 | * structs to extended internal versions */ | |
2323 | ip_vs_copy_usvc_compat(&usvc, usvc_compat); | |
2324 | ip_vs_copy_udest_compat(&udest, udest_compat); | |
1da177e4 LT |
2325 | |
2326 | if (cmd == IP_VS_SO_SET_ZERO) { | |
2327 | /* if no service address is set, zero counters in all */ | |
c860c6b1 | 2328 | if (!usvc.fwmark && !usvc.addr.ip && !usvc.port) { |
fc723250 | 2329 | ret = ip_vs_zero_all(net); |
1da177e4 LT |
2330 | goto out_unlock; |
2331 | } | |
2332 | } | |
2333 | ||
2906f66a VMR |
2334 | /* Check for valid protocol: TCP or UDP or SCTP, even for fwmark!=0 */ |
2335 | if (usvc.protocol != IPPROTO_TCP && usvc.protocol != IPPROTO_UDP && | |
2336 | usvc.protocol != IPPROTO_SCTP) { | |
1e3e238e HE |
2337 | pr_err("set_ctl: invalid protocol: %d %pI4:%d %s\n", |
2338 | usvc.protocol, &usvc.addr.ip, | |
2339 | ntohs(usvc.port), usvc.sched_name); | |
1da177e4 LT |
2340 | ret = -EFAULT; |
2341 | goto out_unlock; | |
2342 | } | |
2343 | ||
2344 | /* Lookup the exact service by <protocol, addr, port> or fwmark */ | |
ceec4c38 | 2345 | rcu_read_lock(); |
c860c6b1 | 2346 | if (usvc.fwmark == 0) |
fc723250 | 2347 | svc = __ip_vs_service_find(net, usvc.af, usvc.protocol, |
26c15cfd | 2348 | &usvc.addr, usvc.port); |
1da177e4 | 2349 | else |
fc723250 | 2350 | svc = __ip_vs_svc_fwm_find(net, usvc.af, usvc.fwmark); |
ceec4c38 | 2351 | rcu_read_unlock(); |
1da177e4 LT |
2352 | |
2353 | if (cmd != IP_VS_SO_SET_ADD | |
c860c6b1 | 2354 | && (svc == NULL || svc->protocol != usvc.protocol)) { |
1da177e4 | 2355 | ret = -ESRCH; |
26c15cfd | 2356 | goto out_unlock; |
1da177e4 LT |
2357 | } |
2358 | ||
2359 | switch (cmd) { | |
2360 | case IP_VS_SO_SET_ADD: | |
2361 | if (svc != NULL) | |
2362 | ret = -EEXIST; | |
2363 | else | |
fc723250 | 2364 | ret = ip_vs_add_service(net, &usvc, &svc); |
1da177e4 LT |
2365 | break; |
2366 | case IP_VS_SO_SET_EDIT: | |
c860c6b1 | 2367 | ret = ip_vs_edit_service(svc, &usvc); |
1da177e4 LT |
2368 | break; |
2369 | case IP_VS_SO_SET_DEL: | |
2370 | ret = ip_vs_del_service(svc); | |
2371 | if (!ret) | |
2372 | goto out_unlock; | |
2373 | break; | |
2374 | case IP_VS_SO_SET_ZERO: | |
2375 | ret = ip_vs_zero_service(svc); | |
2376 | break; | |
2377 | case IP_VS_SO_SET_ADDDEST: | |
c860c6b1 | 2378 | ret = ip_vs_add_dest(svc, &udest); |
1da177e4 LT |
2379 | break; |
2380 | case IP_VS_SO_SET_EDITDEST: | |
c860c6b1 | 2381 | ret = ip_vs_edit_dest(svc, &udest); |
1da177e4 LT |
2382 | break; |
2383 | case IP_VS_SO_SET_DELDEST: | |
c860c6b1 | 2384 | ret = ip_vs_del_dest(svc, &udest); |
1da177e4 LT |
2385 | break; |
2386 | default: | |
2387 | ret = -EINVAL; | |
2388 | } | |
2389 | ||
1da177e4 | 2390 | out_unlock: |
14cc3e2b | 2391 | mutex_unlock(&__ip_vs_mutex); |
1da177e4 LT |
2392 | out_dec: |
2393 | /* decrease the module use count */ | |
2394 | ip_vs_use_count_dec(); | |
2395 | ||
2396 | return ret; | |
2397 | } | |
2398 | ||
2399 | ||
1da177e4 LT |
2400 | static void |
2401 | ip_vs_copy_service(struct ip_vs_service_entry *dst, struct ip_vs_service *src) | |
2402 | { | |
ceec4c38 JA |
2403 | struct ip_vs_scheduler *sched; |
2404 | ||
2405 | sched = rcu_dereference_protected(src->scheduler, 1); | |
1da177e4 | 2406 | dst->protocol = src->protocol; |
e7ade46a | 2407 | dst->addr = src->addr.ip; |
1da177e4 LT |
2408 | dst->port = src->port; |
2409 | dst->fwmark = src->fwmark; | |
ceec4c38 | 2410 | strlcpy(dst->sched_name, sched->name, sizeof(dst->sched_name)); |
1da177e4 LT |
2411 | dst->flags = src->flags; |
2412 | dst->timeout = src->timeout / HZ; | |
2413 | dst->netmask = src->netmask; | |
2414 | dst->num_dests = src->num_dests; | |
2415 | ip_vs_copy_stats(&dst->stats, &src->stats); | |
2416 | } | |
2417 | ||
2418 | static inline int | |
fc723250 HS |
2419 | __ip_vs_get_service_entries(struct net *net, |
2420 | const struct ip_vs_get_services *get, | |
1da177e4 LT |
2421 | struct ip_vs_get_services __user *uptr) |
2422 | { | |
2423 | int idx, count=0; | |
2424 | struct ip_vs_service *svc; | |
2425 | struct ip_vs_service_entry entry; | |
2426 | int ret = 0; | |
2427 | ||
2428 | for (idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { | |
ceec4c38 | 2429 | hlist_for_each_entry(svc, &ip_vs_svc_table[idx], s_list) { |
f94fd041 | 2430 | /* Only expose IPv4 entries to old interface */ |
fc723250 | 2431 | if (svc->af != AF_INET || !net_eq(svc->net, net)) |
f94fd041 JV |
2432 | continue; |
2433 | ||
1da177e4 LT |
2434 | if (count >= get->num_services) |
2435 | goto out; | |
4da62fc7 | 2436 | memset(&entry, 0, sizeof(entry)); |
1da177e4 LT |
2437 | ip_vs_copy_service(&entry, svc); |
2438 | if (copy_to_user(&uptr->entrytable[count], | |
2439 | &entry, sizeof(entry))) { | |
2440 | ret = -EFAULT; | |
2441 | goto out; | |
2442 | } | |
2443 | count++; | |
2444 | } | |
2445 | } | |
2446 | ||
2447 | for (idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { | |
ceec4c38 | 2448 | hlist_for_each_entry(svc, &ip_vs_svc_fwm_table[idx], f_list) { |
f94fd041 | 2449 | /* Only expose IPv4 entries to old interface */ |
fc723250 | 2450 | if (svc->af != AF_INET || !net_eq(svc->net, net)) |
f94fd041 JV |
2451 | continue; |
2452 | ||
1da177e4 LT |
2453 | if (count >= get->num_services) |
2454 | goto out; | |
4da62fc7 | 2455 | memset(&entry, 0, sizeof(entry)); |
1da177e4 LT |
2456 | ip_vs_copy_service(&entry, svc); |
2457 | if (copy_to_user(&uptr->entrytable[count], | |
2458 | &entry, sizeof(entry))) { | |
2459 | ret = -EFAULT; | |
2460 | goto out; | |
2461 | } | |
2462 | count++; | |
2463 | } | |
2464 | } | |
552ad65a | 2465 | out: |
1da177e4 LT |
2466 | return ret; |
2467 | } | |
2468 | ||
2469 | static inline int | |
fc723250 | 2470 | __ip_vs_get_dest_entries(struct net *net, const struct ip_vs_get_dests *get, |
1da177e4 LT |
2471 | struct ip_vs_get_dests __user *uptr) |
2472 | { | |
2473 | struct ip_vs_service *svc; | |
b18610de | 2474 | union nf_inet_addr addr = { .ip = get->addr }; |
1da177e4 LT |
2475 | int ret = 0; |
2476 | ||
ceec4c38 | 2477 | rcu_read_lock(); |
1da177e4 | 2478 | if (get->fwmark) |
fc723250 | 2479 | svc = __ip_vs_svc_fwm_find(net, AF_INET, get->fwmark); |
1da177e4 | 2480 | else |
fc723250 | 2481 | svc = __ip_vs_service_find(net, AF_INET, get->protocol, &addr, |
26c15cfd | 2482 | get->port); |
ceec4c38 | 2483 | rcu_read_unlock(); |
b18610de | 2484 | |
1da177e4 LT |
2485 | if (svc) { |
2486 | int count = 0; | |
2487 | struct ip_vs_dest *dest; | |
2488 | struct ip_vs_dest_entry entry; | |
2489 | ||
a8241c63 | 2490 | memset(&entry, 0, sizeof(entry)); |
1da177e4 LT |
2491 | list_for_each_entry(dest, &svc->destinations, n_list) { |
2492 | if (count >= get->num_dests) | |
2493 | break; | |
2494 | ||
6cff339b AG |
2495 | /* Cannot expose heterogeneous members via sockopt |
2496 | * interface | |
2497 | */ | |
2498 | if (dest->af != svc->af) | |
2499 | continue; | |
2500 | ||
e7ade46a | 2501 | entry.addr = dest->addr.ip; |
1da177e4 LT |
2502 | entry.port = dest->port; |
2503 | entry.conn_flags = atomic_read(&dest->conn_flags); | |
2504 | entry.weight = atomic_read(&dest->weight); | |
2505 | entry.u_threshold = dest->u_threshold; | |
2506 | entry.l_threshold = dest->l_threshold; | |
2507 | entry.activeconns = atomic_read(&dest->activeconns); | |
2508 | entry.inactconns = atomic_read(&dest->inactconns); | |
2509 | entry.persistconns = atomic_read(&dest->persistconns); | |
2510 | ip_vs_copy_stats(&entry.stats, &dest->stats); | |
2511 | if (copy_to_user(&uptr->entrytable[count], | |
2512 | &entry, sizeof(entry))) { | |
2513 | ret = -EFAULT; | |
2514 | break; | |
2515 | } | |
2516 | count++; | |
2517 | } | |
1da177e4 LT |
2518 | } else |
2519 | ret = -ESRCH; | |
2520 | return ret; | |
2521 | } | |
2522 | ||
2523 | static inline void | |
9330419d | 2524 | __ip_vs_get_timeouts(struct net *net, struct ip_vs_timeout_user *u) |
1da177e4 | 2525 | { |
091bb34c | 2526 | #if defined(CONFIG_IP_VS_PROTO_TCP) || defined(CONFIG_IP_VS_PROTO_UDP) |
9330419d | 2527 | struct ip_vs_proto_data *pd; |
091bb34c | 2528 | #endif |
9330419d | 2529 | |
b61a602e AB |
2530 | memset(u, 0, sizeof (*u)); |
2531 | ||
1da177e4 | 2532 | #ifdef CONFIG_IP_VS_PROTO_TCP |
9330419d HS |
2533 | pd = ip_vs_proto_data_get(net, IPPROTO_TCP); |
2534 | u->tcp_timeout = pd->timeout_table[IP_VS_TCP_S_ESTABLISHED] / HZ; | |
2535 | u->tcp_fin_timeout = pd->timeout_table[IP_VS_TCP_S_FIN_WAIT] / HZ; | |
1da177e4 LT |
2536 | #endif |
2537 | #ifdef CONFIG_IP_VS_PROTO_UDP | |
9330419d | 2538 | pd = ip_vs_proto_data_get(net, IPPROTO_UDP); |
1da177e4 | 2539 | u->udp_timeout = |
9330419d | 2540 | pd->timeout_table[IP_VS_UDP_S_NORMAL] / HZ; |
1da177e4 LT |
2541 | #endif |
2542 | } | |
2543 | ||
5fcf0cf6 JA |
2544 | static const unsigned char get_arglen[CMDID(IP_VS_SO_GET_MAX) + 1] = { |
2545 | [CMDID(IP_VS_SO_GET_VERSION)] = 64, | |
2546 | [CMDID(IP_VS_SO_GET_INFO)] = sizeof(struct ip_vs_getinfo), | |
2547 | [CMDID(IP_VS_SO_GET_SERVICES)] = sizeof(struct ip_vs_get_services), | |
2548 | [CMDID(IP_VS_SO_GET_SERVICE)] = sizeof(struct ip_vs_service_entry), | |
2549 | [CMDID(IP_VS_SO_GET_DESTS)] = sizeof(struct ip_vs_get_dests), | |
2550 | [CMDID(IP_VS_SO_GET_TIMEOUT)] = sizeof(struct ip_vs_timeout_user), | |
2551 | [CMDID(IP_VS_SO_GET_DAEMON)] = 2 * sizeof(struct ip_vs_daemon_user), | |
2552 | }; | |
1da177e4 | 2553 | |
5fcf0cf6 JA |
2554 | union ip_vs_get_arglen { |
2555 | char field_IP_VS_SO_GET_VERSION[64]; | |
2556 | struct ip_vs_getinfo field_IP_VS_SO_GET_INFO; | |
2557 | struct ip_vs_get_services field_IP_VS_SO_GET_SERVICES; | |
2558 | struct ip_vs_service_entry field_IP_VS_SO_GET_SERVICE; | |
2559 | struct ip_vs_get_dests field_IP_VS_SO_GET_DESTS; | |
2560 | struct ip_vs_timeout_user field_IP_VS_SO_GET_TIMEOUT; | |
2561 | struct ip_vs_daemon_user field_IP_VS_SO_GET_DAEMON[2]; | |
1da177e4 LT |
2562 | }; |
2563 | ||
5fcf0cf6 JA |
2564 | #define MAX_GET_ARGLEN sizeof(union ip_vs_get_arglen) |
2565 | ||
1da177e4 LT |
2566 | static int |
2567 | do_ip_vs_get_ctl(struct sock *sk, int cmd, void __user *user, int *len) | |
2568 | { | |
5fcf0cf6 | 2569 | unsigned char arg[MAX_GET_ARGLEN]; |
1da177e4 | 2570 | int ret = 0; |
04bcef2a | 2571 | unsigned int copylen; |
fc723250 | 2572 | struct net *net = sock_net(sk); |
f131315f | 2573 | struct netns_ipvs *ipvs = net_ipvs(net); |
1da177e4 | 2574 | |
fc723250 | 2575 | BUG_ON(!net); |
5fcf0cf6 | 2576 | BUILD_BUG_ON(sizeof(arg) > 255); |
df008c91 | 2577 | if (!ns_capable(sock_net(sk)->user_ns, CAP_NET_ADMIN)) |
1da177e4 LT |
2578 | return -EPERM; |
2579 | ||
04bcef2a AV |
2580 | if (cmd < IP_VS_BASE_CTL || cmd > IP_VS_SO_GET_MAX) |
2581 | return -EINVAL; | |
2582 | ||
5fcf0cf6 JA |
2583 | copylen = get_arglen[CMDID(cmd)]; |
2584 | if (*len < (int) copylen) { | |
2585 | IP_VS_DBG(1, "get_ctl: len %d < %u\n", *len, copylen); | |
1da177e4 LT |
2586 | return -EINVAL; |
2587 | } | |
2588 | ||
04bcef2a | 2589 | if (copy_from_user(arg, user, copylen) != 0) |
1da177e4 | 2590 | return -EFAULT; |
ae1d48b2 HS |
2591 | /* |
2592 | * Handle daemons first since it has its own locking | |
2593 | */ | |
2594 | if (cmd == IP_VS_SO_GET_DAEMON) { | |
2595 | struct ip_vs_daemon_user d[2]; | |
2596 | ||
2597 | memset(&d, 0, sizeof(d)); | |
7926dbfa | 2598 | mutex_lock(&ipvs->sync_mutex); |
ae1d48b2 HS |
2599 | if (ipvs->sync_state & IP_VS_STATE_MASTER) { |
2600 | d[0].state = IP_VS_STATE_MASTER; | |
2601 | strlcpy(d[0].mcast_ifn, ipvs->master_mcast_ifn, | |
2602 | sizeof(d[0].mcast_ifn)); | |
2603 | d[0].syncid = ipvs->master_syncid; | |
2604 | } | |
2605 | if (ipvs->sync_state & IP_VS_STATE_BACKUP) { | |
2606 | d[1].state = IP_VS_STATE_BACKUP; | |
2607 | strlcpy(d[1].mcast_ifn, ipvs->backup_mcast_ifn, | |
2608 | sizeof(d[1].mcast_ifn)); | |
2609 | d[1].syncid = ipvs->backup_syncid; | |
2610 | } | |
2611 | if (copy_to_user(user, &d, sizeof(d)) != 0) | |
2612 | ret = -EFAULT; | |
2613 | mutex_unlock(&ipvs->sync_mutex); | |
2614 | return ret; | |
2615 | } | |
1da177e4 | 2616 | |
7926dbfa | 2617 | mutex_lock(&__ip_vs_mutex); |
1da177e4 LT |
2618 | switch (cmd) { |
2619 | case IP_VS_SO_GET_VERSION: | |
2620 | { | |
2621 | char buf[64]; | |
2622 | ||
2623 | sprintf(buf, "IP Virtual Server version %d.%d.%d (size=%d)", | |
6f7edb48 | 2624 | NVERSION(IP_VS_VERSION_CODE), ip_vs_conn_tab_size); |
1da177e4 LT |
2625 | if (copy_to_user(user, buf, strlen(buf)+1) != 0) { |
2626 | ret = -EFAULT; | |
2627 | goto out; | |
2628 | } | |
2629 | *len = strlen(buf)+1; | |
2630 | } | |
2631 | break; | |
2632 | ||
2633 | case IP_VS_SO_GET_INFO: | |
2634 | { | |
2635 | struct ip_vs_getinfo info; | |
2636 | info.version = IP_VS_VERSION_CODE; | |
6f7edb48 | 2637 | info.size = ip_vs_conn_tab_size; |
a0840e2e | 2638 | info.num_services = ipvs->num_services; |
1da177e4 LT |
2639 | if (copy_to_user(user, &info, sizeof(info)) != 0) |
2640 | ret = -EFAULT; | |
2641 | } | |
2642 | break; | |
2643 | ||
2644 | case IP_VS_SO_GET_SERVICES: | |
2645 | { | |
2646 | struct ip_vs_get_services *get; | |
2647 | int size; | |
2648 | ||
2649 | get = (struct ip_vs_get_services *)arg; | |
2650 | size = sizeof(*get) + | |
2651 | sizeof(struct ip_vs_service_entry) * get->num_services; | |
2652 | if (*len != size) { | |
1e3e238e | 2653 | pr_err("length: %u != %u\n", *len, size); |
1da177e4 LT |
2654 | ret = -EINVAL; |
2655 | goto out; | |
2656 | } | |
fc723250 | 2657 | ret = __ip_vs_get_service_entries(net, get, user); |
1da177e4 LT |
2658 | } |
2659 | break; | |
2660 | ||
2661 | case IP_VS_SO_GET_SERVICE: | |
2662 | { | |
2663 | struct ip_vs_service_entry *entry; | |
2664 | struct ip_vs_service *svc; | |
b18610de | 2665 | union nf_inet_addr addr; |
1da177e4 LT |
2666 | |
2667 | entry = (struct ip_vs_service_entry *)arg; | |
b18610de | 2668 | addr.ip = entry->addr; |
ceec4c38 | 2669 | rcu_read_lock(); |
1da177e4 | 2670 | if (entry->fwmark) |
fc723250 | 2671 | svc = __ip_vs_svc_fwm_find(net, AF_INET, entry->fwmark); |
1da177e4 | 2672 | else |
fc723250 HS |
2673 | svc = __ip_vs_service_find(net, AF_INET, |
2674 | entry->protocol, &addr, | |
2675 | entry->port); | |
ceec4c38 | 2676 | rcu_read_unlock(); |
1da177e4 LT |
2677 | if (svc) { |
2678 | ip_vs_copy_service(entry, svc); | |
2679 | if (copy_to_user(user, entry, sizeof(*entry)) != 0) | |
2680 | ret = -EFAULT; | |
1da177e4 LT |
2681 | } else |
2682 | ret = -ESRCH; | |
2683 | } | |
2684 | break; | |
2685 | ||
2686 | case IP_VS_SO_GET_DESTS: | |
2687 | { | |
2688 | struct ip_vs_get_dests *get; | |
2689 | int size; | |
2690 | ||
2691 | get = (struct ip_vs_get_dests *)arg; | |
2692 | size = sizeof(*get) + | |
2693 | sizeof(struct ip_vs_dest_entry) * get->num_dests; | |
2694 | if (*len != size) { | |
1e3e238e | 2695 | pr_err("length: %u != %u\n", *len, size); |
1da177e4 LT |
2696 | ret = -EINVAL; |
2697 | goto out; | |
2698 | } | |
fc723250 | 2699 | ret = __ip_vs_get_dest_entries(net, get, user); |
1da177e4 LT |
2700 | } |
2701 | break; | |
2702 | ||
2703 | case IP_VS_SO_GET_TIMEOUT: | |
2704 | { | |
2705 | struct ip_vs_timeout_user t; | |
2706 | ||
9330419d | 2707 | __ip_vs_get_timeouts(net, &t); |
1da177e4 LT |
2708 | if (copy_to_user(user, &t, sizeof(t)) != 0) |
2709 | ret = -EFAULT; | |
2710 | } | |
2711 | break; | |
2712 | ||
1da177e4 LT |
2713 | default: |
2714 | ret = -EINVAL; | |
2715 | } | |
2716 | ||
552ad65a | 2717 | out: |
14cc3e2b | 2718 | mutex_unlock(&__ip_vs_mutex); |
1da177e4 LT |
2719 | return ret; |
2720 | } | |
2721 | ||
2722 | ||
2723 | static struct nf_sockopt_ops ip_vs_sockopts = { | |
2724 | .pf = PF_INET, | |
2725 | .set_optmin = IP_VS_BASE_CTL, | |
2726 | .set_optmax = IP_VS_SO_SET_MAX+1, | |
2727 | .set = do_ip_vs_set_ctl, | |
2728 | .get_optmin = IP_VS_BASE_CTL, | |
2729 | .get_optmax = IP_VS_SO_GET_MAX+1, | |
2730 | .get = do_ip_vs_get_ctl, | |
16fcec35 | 2731 | .owner = THIS_MODULE, |
1da177e4 LT |
2732 | }; |
2733 | ||
9a812198 JV |
2734 | /* |
2735 | * Generic Netlink interface | |
2736 | */ | |
2737 | ||
2738 | /* IPVS genetlink family */ | |
2739 | static struct genl_family ip_vs_genl_family = { | |
2740 | .id = GENL_ID_GENERATE, | |
2741 | .hdrsize = 0, | |
2742 | .name = IPVS_GENL_NAME, | |
2743 | .version = IPVS_GENL_VERSION, | |
2744 | .maxattr = IPVS_CMD_MAX, | |
c6d2d445 | 2745 | .netnsok = true, /* Make ipvsadm to work on netns */ |
9a812198 JV |
2746 | }; |
2747 | ||
2748 | /* Policy used for first-level command attributes */ | |
2749 | static const struct nla_policy ip_vs_cmd_policy[IPVS_CMD_ATTR_MAX + 1] = { | |
2750 | [IPVS_CMD_ATTR_SERVICE] = { .type = NLA_NESTED }, | |
2751 | [IPVS_CMD_ATTR_DEST] = { .type = NLA_NESTED }, | |
2752 | [IPVS_CMD_ATTR_DAEMON] = { .type = NLA_NESTED }, | |
2753 | [IPVS_CMD_ATTR_TIMEOUT_TCP] = { .type = NLA_U32 }, | |
2754 | [IPVS_CMD_ATTR_TIMEOUT_TCP_FIN] = { .type = NLA_U32 }, | |
2755 | [IPVS_CMD_ATTR_TIMEOUT_UDP] = { .type = NLA_U32 }, | |
2756 | }; | |
2757 | ||
2758 | /* Policy used for attributes in nested attribute IPVS_CMD_ATTR_DAEMON */ | |
2759 | static const struct nla_policy ip_vs_daemon_policy[IPVS_DAEMON_ATTR_MAX + 1] = { | |
2760 | [IPVS_DAEMON_ATTR_STATE] = { .type = NLA_U32 }, | |
2761 | [IPVS_DAEMON_ATTR_MCAST_IFN] = { .type = NLA_NUL_STRING, | |
2762 | .len = IP_VS_IFNAME_MAXLEN }, | |
2763 | [IPVS_DAEMON_ATTR_SYNC_ID] = { .type = NLA_U32 }, | |
2764 | }; | |
2765 | ||
2766 | /* Policy used for attributes in nested attribute IPVS_CMD_ATTR_SERVICE */ | |
2767 | static const struct nla_policy ip_vs_svc_policy[IPVS_SVC_ATTR_MAX + 1] = { | |
2768 | [IPVS_SVC_ATTR_AF] = { .type = NLA_U16 }, | |
2769 | [IPVS_SVC_ATTR_PROTOCOL] = { .type = NLA_U16 }, | |
2770 | [IPVS_SVC_ATTR_ADDR] = { .type = NLA_BINARY, | |
2771 | .len = sizeof(union nf_inet_addr) }, | |
2772 | [IPVS_SVC_ATTR_PORT] = { .type = NLA_U16 }, | |
2773 | [IPVS_SVC_ATTR_FWMARK] = { .type = NLA_U32 }, | |
2774 | [IPVS_SVC_ATTR_SCHED_NAME] = { .type = NLA_NUL_STRING, | |
2775 | .len = IP_VS_SCHEDNAME_MAXLEN }, | |
0d1e71b0 SH |
2776 | [IPVS_SVC_ATTR_PE_NAME] = { .type = NLA_NUL_STRING, |
2777 | .len = IP_VS_PENAME_MAXLEN }, | |
9a812198 JV |
2778 | [IPVS_SVC_ATTR_FLAGS] = { .type = NLA_BINARY, |
2779 | .len = sizeof(struct ip_vs_flags) }, | |
2780 | [IPVS_SVC_ATTR_TIMEOUT] = { .type = NLA_U32 }, | |
2781 | [IPVS_SVC_ATTR_NETMASK] = { .type = NLA_U32 }, | |
2782 | [IPVS_SVC_ATTR_STATS] = { .type = NLA_NESTED }, | |
2783 | }; | |
2784 | ||
2785 | /* Policy used for attributes in nested attribute IPVS_CMD_ATTR_DEST */ | |
2786 | static const struct nla_policy ip_vs_dest_policy[IPVS_DEST_ATTR_MAX + 1] = { | |
2787 | [IPVS_DEST_ATTR_ADDR] = { .type = NLA_BINARY, | |
2788 | .len = sizeof(union nf_inet_addr) }, | |
2789 | [IPVS_DEST_ATTR_PORT] = { .type = NLA_U16 }, | |
2790 | [IPVS_DEST_ATTR_FWD_METHOD] = { .type = NLA_U32 }, | |
2791 | [IPVS_DEST_ATTR_WEIGHT] = { .type = NLA_U32 }, | |
2792 | [IPVS_DEST_ATTR_U_THRESH] = { .type = NLA_U32 }, | |
2793 | [IPVS_DEST_ATTR_L_THRESH] = { .type = NLA_U32 }, | |
2794 | [IPVS_DEST_ATTR_ACTIVE_CONNS] = { .type = NLA_U32 }, | |
2795 | [IPVS_DEST_ATTR_INACT_CONNS] = { .type = NLA_U32 }, | |
2796 | [IPVS_DEST_ATTR_PERSIST_CONNS] = { .type = NLA_U32 }, | |
2797 | [IPVS_DEST_ATTR_STATS] = { .type = NLA_NESTED }, | |
6cff339b | 2798 | [IPVS_DEST_ATTR_ADDR_FAMILY] = { .type = NLA_U16 }, |
9a812198 JV |
2799 | }; |
2800 | ||
2801 | static int ip_vs_genl_fill_stats(struct sk_buff *skb, int container_type, | |
2802 | struct ip_vs_stats *stats) | |
2803 | { | |
55a3d4e1 | 2804 | struct ip_vs_stats_user ustats; |
9a812198 JV |
2805 | struct nlattr *nl_stats = nla_nest_start(skb, container_type); |
2806 | if (!nl_stats) | |
2807 | return -EMSGSIZE; | |
2808 | ||
55a3d4e1 | 2809 | ip_vs_copy_stats(&ustats, stats); |
9a812198 | 2810 | |
969e8e25 DM |
2811 | if (nla_put_u32(skb, IPVS_STATS_ATTR_CONNS, ustats.conns) || |
2812 | nla_put_u32(skb, IPVS_STATS_ATTR_INPKTS, ustats.inpkts) || | |
2813 | nla_put_u32(skb, IPVS_STATS_ATTR_OUTPKTS, ustats.outpkts) || | |
2814 | nla_put_u64(skb, IPVS_STATS_ATTR_INBYTES, ustats.inbytes) || | |
2815 | nla_put_u64(skb, IPVS_STATS_ATTR_OUTBYTES, ustats.outbytes) || | |
2816 | nla_put_u32(skb, IPVS_STATS_ATTR_CPS, ustats.cps) || | |
2817 | nla_put_u32(skb, IPVS_STATS_ATTR_INPPS, ustats.inpps) || | |
2818 | nla_put_u32(skb, IPVS_STATS_ATTR_OUTPPS, ustats.outpps) || | |
2819 | nla_put_u32(skb, IPVS_STATS_ATTR_INBPS, ustats.inbps) || | |
2820 | nla_put_u32(skb, IPVS_STATS_ATTR_OUTBPS, ustats.outbps)) | |
2821 | goto nla_put_failure; | |
9a812198 JV |
2822 | nla_nest_end(skb, nl_stats); |
2823 | ||
2824 | return 0; | |
2825 | ||
2826 | nla_put_failure: | |
9a812198 JV |
2827 | nla_nest_cancel(skb, nl_stats); |
2828 | return -EMSGSIZE; | |
2829 | } | |
2830 | ||
2831 | static int ip_vs_genl_fill_service(struct sk_buff *skb, | |
2832 | struct ip_vs_service *svc) | |
2833 | { | |
ceec4c38 | 2834 | struct ip_vs_scheduler *sched; |
371990ee | 2835 | struct ip_vs_pe *pe; |
9a812198 JV |
2836 | struct nlattr *nl_service; |
2837 | struct ip_vs_flags flags = { .flags = svc->flags, | |
2838 | .mask = ~0 }; | |
2839 | ||
2840 | nl_service = nla_nest_start(skb, IPVS_CMD_ATTR_SERVICE); | |
2841 | if (!nl_service) | |
2842 | return -EMSGSIZE; | |
2843 | ||
969e8e25 DM |
2844 | if (nla_put_u16(skb, IPVS_SVC_ATTR_AF, svc->af)) |
2845 | goto nla_put_failure; | |
9a812198 | 2846 | if (svc->fwmark) { |
969e8e25 DM |
2847 | if (nla_put_u32(skb, IPVS_SVC_ATTR_FWMARK, svc->fwmark)) |
2848 | goto nla_put_failure; | |
9a812198 | 2849 | } else { |
969e8e25 DM |
2850 | if (nla_put_u16(skb, IPVS_SVC_ATTR_PROTOCOL, svc->protocol) || |
2851 | nla_put(skb, IPVS_SVC_ATTR_ADDR, sizeof(svc->addr), &svc->addr) || | |
0a925864 | 2852 | nla_put_be16(skb, IPVS_SVC_ATTR_PORT, svc->port)) |
969e8e25 | 2853 | goto nla_put_failure; |
9a812198 JV |
2854 | } |
2855 | ||
ceec4c38 | 2856 | sched = rcu_dereference_protected(svc->scheduler, 1); |
371990ee | 2857 | pe = rcu_dereference_protected(svc->pe, 1); |
ceec4c38 | 2858 | if (nla_put_string(skb, IPVS_SVC_ATTR_SCHED_NAME, sched->name) || |
371990ee | 2859 | (pe && nla_put_string(skb, IPVS_SVC_ATTR_PE_NAME, pe->name)) || |
969e8e25 DM |
2860 | nla_put(skb, IPVS_SVC_ATTR_FLAGS, sizeof(flags), &flags) || |
2861 | nla_put_u32(skb, IPVS_SVC_ATTR_TIMEOUT, svc->timeout / HZ) || | |
0a925864 | 2862 | nla_put_be32(skb, IPVS_SVC_ATTR_NETMASK, svc->netmask)) |
969e8e25 | 2863 | goto nla_put_failure; |
9a812198 JV |
2864 | if (ip_vs_genl_fill_stats(skb, IPVS_SVC_ATTR_STATS, &svc->stats)) |
2865 | goto nla_put_failure; | |
2866 | ||
2867 | nla_nest_end(skb, nl_service); | |
2868 | ||
2869 | return 0; | |
2870 | ||
2871 | nla_put_failure: | |
2872 | nla_nest_cancel(skb, nl_service); | |
2873 | return -EMSGSIZE; | |
2874 | } | |
2875 | ||
2876 | static int ip_vs_genl_dump_service(struct sk_buff *skb, | |
2877 | struct ip_vs_service *svc, | |
2878 | struct netlink_callback *cb) | |
2879 | { | |
2880 | void *hdr; | |
2881 | ||
15e47304 | 2882 | hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, |
9a812198 JV |
2883 | &ip_vs_genl_family, NLM_F_MULTI, |
2884 | IPVS_CMD_NEW_SERVICE); | |
2885 | if (!hdr) | |
2886 | return -EMSGSIZE; | |
2887 | ||
2888 | if (ip_vs_genl_fill_service(skb, svc) < 0) | |
2889 | goto nla_put_failure; | |
2890 | ||
2891 | return genlmsg_end(skb, hdr); | |
2892 | ||
2893 | nla_put_failure: | |
2894 | genlmsg_cancel(skb, hdr); | |
2895 | return -EMSGSIZE; | |
2896 | } | |
2897 | ||
2898 | static int ip_vs_genl_dump_services(struct sk_buff *skb, | |
2899 | struct netlink_callback *cb) | |
2900 | { | |
2901 | int idx = 0, i; | |
2902 | int start = cb->args[0]; | |
2903 | struct ip_vs_service *svc; | |
fc723250 | 2904 | struct net *net = skb_sknet(skb); |
9a812198 JV |
2905 | |
2906 | mutex_lock(&__ip_vs_mutex); | |
2907 | for (i = 0; i < IP_VS_SVC_TAB_SIZE; i++) { | |
ceec4c38 | 2908 | hlist_for_each_entry(svc, &ip_vs_svc_table[i], s_list) { |
fc723250 | 2909 | if (++idx <= start || !net_eq(svc->net, net)) |
9a812198 JV |
2910 | continue; |
2911 | if (ip_vs_genl_dump_service(skb, svc, cb) < 0) { | |
2912 | idx--; | |
2913 | goto nla_put_failure; | |
2914 | } | |
2915 | } | |
2916 | } | |
2917 | ||
2918 | for (i = 0; i < IP_VS_SVC_TAB_SIZE; i++) { | |
ceec4c38 | 2919 | hlist_for_each_entry(svc, &ip_vs_svc_fwm_table[i], f_list) { |
fc723250 | 2920 | if (++idx <= start || !net_eq(svc->net, net)) |
9a812198 JV |
2921 | continue; |
2922 | if (ip_vs_genl_dump_service(skb, svc, cb) < 0) { | |
2923 | idx--; | |
2924 | goto nla_put_failure; | |
2925 | } | |
2926 | } | |
2927 | } | |
2928 | ||
2929 | nla_put_failure: | |
2930 | mutex_unlock(&__ip_vs_mutex); | |
2931 | cb->args[0] = idx; | |
2932 | ||
2933 | return skb->len; | |
2934 | } | |
2935 | ||
fc723250 HS |
2936 | static int ip_vs_genl_parse_service(struct net *net, |
2937 | struct ip_vs_service_user_kern *usvc, | |
26c15cfd JA |
2938 | struct nlattr *nla, int full_entry, |
2939 | struct ip_vs_service **ret_svc) | |
9a812198 JV |
2940 | { |
2941 | struct nlattr *attrs[IPVS_SVC_ATTR_MAX + 1]; | |
2942 | struct nlattr *nla_af, *nla_port, *nla_fwmark, *nla_protocol, *nla_addr; | |
26c15cfd | 2943 | struct ip_vs_service *svc; |
9a812198 JV |
2944 | |
2945 | /* Parse mandatory identifying service fields first */ | |
2946 | if (nla == NULL || | |
2947 | nla_parse_nested(attrs, IPVS_SVC_ATTR_MAX, nla, ip_vs_svc_policy)) | |
2948 | return -EINVAL; | |
2949 | ||
2950 | nla_af = attrs[IPVS_SVC_ATTR_AF]; | |
2951 | nla_protocol = attrs[IPVS_SVC_ATTR_PROTOCOL]; | |
2952 | nla_addr = attrs[IPVS_SVC_ATTR_ADDR]; | |
2953 | nla_port = attrs[IPVS_SVC_ATTR_PORT]; | |
2954 | nla_fwmark = attrs[IPVS_SVC_ATTR_FWMARK]; | |
2955 | ||
2956 | if (!(nla_af && (nla_fwmark || (nla_port && nla_protocol && nla_addr)))) | |
2957 | return -EINVAL; | |
2958 | ||
258c8893 SH |
2959 | memset(usvc, 0, sizeof(*usvc)); |
2960 | ||
c860c6b1 | 2961 | usvc->af = nla_get_u16(nla_af); |
f94fd041 JV |
2962 | #ifdef CONFIG_IP_VS_IPV6 |
2963 | if (usvc->af != AF_INET && usvc->af != AF_INET6) | |
2964 | #else | |
2965 | if (usvc->af != AF_INET) | |
2966 | #endif | |
9a812198 JV |
2967 | return -EAFNOSUPPORT; |
2968 | ||
2969 | if (nla_fwmark) { | |
2970 | usvc->protocol = IPPROTO_TCP; | |
2971 | usvc->fwmark = nla_get_u32(nla_fwmark); | |
2972 | } else { | |
2973 | usvc->protocol = nla_get_u16(nla_protocol); | |
2974 | nla_memcpy(&usvc->addr, nla_addr, sizeof(usvc->addr)); | |
0a925864 | 2975 | usvc->port = nla_get_be16(nla_port); |
9a812198 JV |
2976 | usvc->fwmark = 0; |
2977 | } | |
2978 | ||
ceec4c38 | 2979 | rcu_read_lock(); |
26c15cfd | 2980 | if (usvc->fwmark) |
fc723250 | 2981 | svc = __ip_vs_svc_fwm_find(net, usvc->af, usvc->fwmark); |
26c15cfd | 2982 | else |
fc723250 | 2983 | svc = __ip_vs_service_find(net, usvc->af, usvc->protocol, |
26c15cfd | 2984 | &usvc->addr, usvc->port); |
ceec4c38 | 2985 | rcu_read_unlock(); |
26c15cfd JA |
2986 | *ret_svc = svc; |
2987 | ||
9a812198 JV |
2988 | /* If a full entry was requested, check for the additional fields */ |
2989 | if (full_entry) { | |
0d1e71b0 | 2990 | struct nlattr *nla_sched, *nla_flags, *nla_pe, *nla_timeout, |
9a812198 JV |
2991 | *nla_netmask; |
2992 | struct ip_vs_flags flags; | |
9a812198 JV |
2993 | |
2994 | nla_sched = attrs[IPVS_SVC_ATTR_SCHED_NAME]; | |
0d1e71b0 | 2995 | nla_pe = attrs[IPVS_SVC_ATTR_PE_NAME]; |
9a812198 JV |
2996 | nla_flags = attrs[IPVS_SVC_ATTR_FLAGS]; |
2997 | nla_timeout = attrs[IPVS_SVC_ATTR_TIMEOUT]; | |
2998 | nla_netmask = attrs[IPVS_SVC_ATTR_NETMASK]; | |
2999 | ||
3000 | if (!(nla_sched && nla_flags && nla_timeout && nla_netmask)) | |
3001 | return -EINVAL; | |
3002 | ||
3003 | nla_memcpy(&flags, nla_flags, sizeof(flags)); | |
3004 | ||
3005 | /* prefill flags from service if it already exists */ | |
26c15cfd | 3006 | if (svc) |
9a812198 | 3007 | usvc->flags = svc->flags; |
9a812198 JV |
3008 | |
3009 | /* set new flags from userland */ | |
3010 | usvc->flags = (usvc->flags & ~flags.mask) | | |
3011 | (flags.flags & flags.mask); | |
c860c6b1 | 3012 | usvc->sched_name = nla_data(nla_sched); |
0d1e71b0 | 3013 | usvc->pe_name = nla_pe ? nla_data(nla_pe) : NULL; |
9a812198 | 3014 | usvc->timeout = nla_get_u32(nla_timeout); |
0a925864 | 3015 | usvc->netmask = nla_get_be32(nla_netmask); |
9a812198 JV |
3016 | } |
3017 | ||
3018 | return 0; | |
3019 | } | |
3020 | ||
fc723250 HS |
3021 | static struct ip_vs_service *ip_vs_genl_find_service(struct net *net, |
3022 | struct nlattr *nla) | |
9a812198 | 3023 | { |
c860c6b1 | 3024 | struct ip_vs_service_user_kern usvc; |
26c15cfd | 3025 | struct ip_vs_service *svc; |
9a812198 JV |
3026 | int ret; |
3027 | ||
fc723250 | 3028 | ret = ip_vs_genl_parse_service(net, &usvc, nla, 0, &svc); |
26c15cfd | 3029 | return ret ? ERR_PTR(ret) : svc; |
9a812198 JV |
3030 | } |
3031 | ||
3032 | static int ip_vs_genl_fill_dest(struct sk_buff *skb, struct ip_vs_dest *dest) | |
3033 | { | |
3034 | struct nlattr *nl_dest; | |
3035 | ||
3036 | nl_dest = nla_nest_start(skb, IPVS_CMD_ATTR_DEST); | |
3037 | if (!nl_dest) | |
3038 | return -EMSGSIZE; | |
3039 | ||
969e8e25 | 3040 | if (nla_put(skb, IPVS_DEST_ATTR_ADDR, sizeof(dest->addr), &dest->addr) || |
0a925864 | 3041 | nla_put_be16(skb, IPVS_DEST_ATTR_PORT, dest->port) || |
969e8e25 DM |
3042 | nla_put_u32(skb, IPVS_DEST_ATTR_FWD_METHOD, |
3043 | (atomic_read(&dest->conn_flags) & | |
3044 | IP_VS_CONN_F_FWD_MASK)) || | |
3045 | nla_put_u32(skb, IPVS_DEST_ATTR_WEIGHT, | |
3046 | atomic_read(&dest->weight)) || | |
3047 | nla_put_u32(skb, IPVS_DEST_ATTR_U_THRESH, dest->u_threshold) || | |
3048 | nla_put_u32(skb, IPVS_DEST_ATTR_L_THRESH, dest->l_threshold) || | |
3049 | nla_put_u32(skb, IPVS_DEST_ATTR_ACTIVE_CONNS, | |
3050 | atomic_read(&dest->activeconns)) || | |
3051 | nla_put_u32(skb, IPVS_DEST_ATTR_INACT_CONNS, | |
3052 | atomic_read(&dest->inactconns)) || | |
3053 | nla_put_u32(skb, IPVS_DEST_ATTR_PERSIST_CONNS, | |
6cff339b AG |
3054 | atomic_read(&dest->persistconns)) || |
3055 | nla_put_u16(skb, IPVS_DEST_ATTR_ADDR_FAMILY, dest->af)) | |
969e8e25 | 3056 | goto nla_put_failure; |
9a812198 JV |
3057 | if (ip_vs_genl_fill_stats(skb, IPVS_DEST_ATTR_STATS, &dest->stats)) |
3058 | goto nla_put_failure; | |
3059 | ||
3060 | nla_nest_end(skb, nl_dest); | |
3061 | ||
3062 | return 0; | |
3063 | ||
3064 | nla_put_failure: | |
3065 | nla_nest_cancel(skb, nl_dest); | |
3066 | return -EMSGSIZE; | |
3067 | } | |
3068 | ||
3069 | static int ip_vs_genl_dump_dest(struct sk_buff *skb, struct ip_vs_dest *dest, | |
3070 | struct netlink_callback *cb) | |
3071 | { | |
3072 | void *hdr; | |
3073 | ||
15e47304 | 3074 | hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, |
9a812198 JV |
3075 | &ip_vs_genl_family, NLM_F_MULTI, |
3076 | IPVS_CMD_NEW_DEST); | |
3077 | if (!hdr) | |
3078 | return -EMSGSIZE; | |
3079 | ||
3080 | if (ip_vs_genl_fill_dest(skb, dest) < 0) | |
3081 | goto nla_put_failure; | |
3082 | ||
3083 | return genlmsg_end(skb, hdr); | |
3084 | ||
3085 | nla_put_failure: | |
3086 | genlmsg_cancel(skb, hdr); | |
3087 | return -EMSGSIZE; | |
3088 | } | |
3089 | ||
3090 | static int ip_vs_genl_dump_dests(struct sk_buff *skb, | |
3091 | struct netlink_callback *cb) | |
3092 | { | |
3093 | int idx = 0; | |
3094 | int start = cb->args[0]; | |
3095 | struct ip_vs_service *svc; | |
3096 | struct ip_vs_dest *dest; | |
3097 | struct nlattr *attrs[IPVS_CMD_ATTR_MAX + 1]; | |
a0840e2e | 3098 | struct net *net = skb_sknet(skb); |
9a812198 JV |
3099 | |
3100 | mutex_lock(&__ip_vs_mutex); | |
3101 | ||
3102 | /* Try to find the service for which to dump destinations */ | |
3103 | if (nlmsg_parse(cb->nlh, GENL_HDRLEN, attrs, | |
3104 | IPVS_CMD_ATTR_MAX, ip_vs_cmd_policy)) | |
3105 | goto out_err; | |
3106 | ||
a0840e2e | 3107 | |
fc723250 | 3108 | svc = ip_vs_genl_find_service(net, attrs[IPVS_CMD_ATTR_SERVICE]); |
9a812198 JV |
3109 | if (IS_ERR(svc) || svc == NULL) |
3110 | goto out_err; | |
3111 | ||
3112 | /* Dump the destinations */ | |
3113 | list_for_each_entry(dest, &svc->destinations, n_list) { | |
3114 | if (++idx <= start) | |
3115 | continue; | |
3116 | if (ip_vs_genl_dump_dest(skb, dest, cb) < 0) { | |
3117 | idx--; | |
3118 | goto nla_put_failure; | |
3119 | } | |
3120 | } | |
3121 | ||
3122 | nla_put_failure: | |
3123 | cb->args[0] = idx; | |
9a812198 JV |
3124 | |
3125 | out_err: | |
3126 | mutex_unlock(&__ip_vs_mutex); | |
3127 | ||
3128 | return skb->len; | |
3129 | } | |
3130 | ||
c860c6b1 | 3131 | static int ip_vs_genl_parse_dest(struct ip_vs_dest_user_kern *udest, |
9a812198 JV |
3132 | struct nlattr *nla, int full_entry) |
3133 | { | |
3134 | struct nlattr *attrs[IPVS_DEST_ATTR_MAX + 1]; | |
3135 | struct nlattr *nla_addr, *nla_port; | |
6cff339b | 3136 | struct nlattr *nla_addr_family; |
9a812198 JV |
3137 | |
3138 | /* Parse mandatory identifying destination fields first */ | |
3139 | if (nla == NULL || | |
3140 | nla_parse_nested(attrs, IPVS_DEST_ATTR_MAX, nla, ip_vs_dest_policy)) | |
3141 | return -EINVAL; | |
3142 | ||
3143 | nla_addr = attrs[IPVS_DEST_ATTR_ADDR]; | |
3144 | nla_port = attrs[IPVS_DEST_ATTR_PORT]; | |
6cff339b | 3145 | nla_addr_family = attrs[IPVS_DEST_ATTR_ADDR_FAMILY]; |
9a812198 JV |
3146 | |
3147 | if (!(nla_addr && nla_port)) | |
3148 | return -EINVAL; | |
3149 | ||
258c8893 SH |
3150 | memset(udest, 0, sizeof(*udest)); |
3151 | ||
9a812198 | 3152 | nla_memcpy(&udest->addr, nla_addr, sizeof(udest->addr)); |
0a925864 | 3153 | udest->port = nla_get_be16(nla_port); |
9a812198 | 3154 | |
6cff339b AG |
3155 | if (nla_addr_family) |
3156 | udest->af = nla_get_u16(nla_addr_family); | |
3157 | else | |
3158 | udest->af = 0; | |
3159 | ||
9a812198 JV |
3160 | /* If a full entry was requested, check for the additional fields */ |
3161 | if (full_entry) { | |
3162 | struct nlattr *nla_fwd, *nla_weight, *nla_u_thresh, | |
3163 | *nla_l_thresh; | |
3164 | ||
3165 | nla_fwd = attrs[IPVS_DEST_ATTR_FWD_METHOD]; | |
3166 | nla_weight = attrs[IPVS_DEST_ATTR_WEIGHT]; | |
3167 | nla_u_thresh = attrs[IPVS_DEST_ATTR_U_THRESH]; | |
3168 | nla_l_thresh = attrs[IPVS_DEST_ATTR_L_THRESH]; | |
3169 | ||
3170 | if (!(nla_fwd && nla_weight && nla_u_thresh && nla_l_thresh)) | |
3171 | return -EINVAL; | |
3172 | ||
3173 | udest->conn_flags = nla_get_u32(nla_fwd) | |
3174 | & IP_VS_CONN_F_FWD_MASK; | |
3175 | udest->weight = nla_get_u32(nla_weight); | |
3176 | udest->u_threshold = nla_get_u32(nla_u_thresh); | |
3177 | udest->l_threshold = nla_get_u32(nla_l_thresh); | |
3178 | } | |
3179 | ||
3180 | return 0; | |
3181 | } | |
3182 | ||
0a925864 JA |
3183 | static int ip_vs_genl_fill_daemon(struct sk_buff *skb, __u32 state, |
3184 | const char *mcast_ifn, __u32 syncid) | |
9a812198 JV |
3185 | { |
3186 | struct nlattr *nl_daemon; | |
3187 | ||
3188 | nl_daemon = nla_nest_start(skb, IPVS_CMD_ATTR_DAEMON); | |
3189 | if (!nl_daemon) | |
3190 | return -EMSGSIZE; | |
3191 | ||
969e8e25 DM |
3192 | if (nla_put_u32(skb, IPVS_DAEMON_ATTR_STATE, state) || |
3193 | nla_put_string(skb, IPVS_DAEMON_ATTR_MCAST_IFN, mcast_ifn) || | |
3194 | nla_put_u32(skb, IPVS_DAEMON_ATTR_SYNC_ID, syncid)) | |
3195 | goto nla_put_failure; | |
9a812198 JV |
3196 | nla_nest_end(skb, nl_daemon); |
3197 | ||
3198 | return 0; | |
3199 | ||
3200 | nla_put_failure: | |
3201 | nla_nest_cancel(skb, nl_daemon); | |
3202 | return -EMSGSIZE; | |
3203 | } | |
3204 | ||
0a925864 JA |
3205 | static int ip_vs_genl_dump_daemon(struct sk_buff *skb, __u32 state, |
3206 | const char *mcast_ifn, __u32 syncid, | |
9a812198 JV |
3207 | struct netlink_callback *cb) |
3208 | { | |
3209 | void *hdr; | |
15e47304 | 3210 | hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, |
9a812198 JV |
3211 | &ip_vs_genl_family, NLM_F_MULTI, |
3212 | IPVS_CMD_NEW_DAEMON); | |
3213 | if (!hdr) | |
3214 | return -EMSGSIZE; | |
3215 | ||
3216 | if (ip_vs_genl_fill_daemon(skb, state, mcast_ifn, syncid)) | |
3217 | goto nla_put_failure; | |
3218 | ||
3219 | return genlmsg_end(skb, hdr); | |
3220 | ||
3221 | nla_put_failure: | |
3222 | genlmsg_cancel(skb, hdr); | |
3223 | return -EMSGSIZE; | |
3224 | } | |
3225 | ||
3226 | static int ip_vs_genl_dump_daemons(struct sk_buff *skb, | |
3227 | struct netlink_callback *cb) | |
3228 | { | |
a09d1977 | 3229 | struct net *net = skb_sknet(skb); |
f131315f HS |
3230 | struct netns_ipvs *ipvs = net_ipvs(net); |
3231 | ||
ae1d48b2 | 3232 | mutex_lock(&ipvs->sync_mutex); |
f131315f | 3233 | if ((ipvs->sync_state & IP_VS_STATE_MASTER) && !cb->args[0]) { |
9a812198 | 3234 | if (ip_vs_genl_dump_daemon(skb, IP_VS_STATE_MASTER, |
f131315f HS |
3235 | ipvs->master_mcast_ifn, |
3236 | ipvs->master_syncid, cb) < 0) | |
9a812198 JV |
3237 | goto nla_put_failure; |
3238 | ||
3239 | cb->args[0] = 1; | |
3240 | } | |
3241 | ||
f131315f | 3242 | if ((ipvs->sync_state & IP_VS_STATE_BACKUP) && !cb->args[1]) { |
9a812198 | 3243 | if (ip_vs_genl_dump_daemon(skb, IP_VS_STATE_BACKUP, |
f131315f HS |
3244 | ipvs->backup_mcast_ifn, |
3245 | ipvs->backup_syncid, cb) < 0) | |
9a812198 JV |
3246 | goto nla_put_failure; |
3247 | ||
3248 | cb->args[1] = 1; | |
3249 | } | |
3250 | ||
3251 | nla_put_failure: | |
ae1d48b2 | 3252 | mutex_unlock(&ipvs->sync_mutex); |
9a812198 JV |
3253 | |
3254 | return skb->len; | |
3255 | } | |
3256 | ||
f131315f | 3257 | static int ip_vs_genl_new_daemon(struct net *net, struct nlattr **attrs) |
9a812198 JV |
3258 | { |
3259 | if (!(attrs[IPVS_DAEMON_ATTR_STATE] && | |
3260 | attrs[IPVS_DAEMON_ATTR_MCAST_IFN] && | |
3261 | attrs[IPVS_DAEMON_ATTR_SYNC_ID])) | |
3262 | return -EINVAL; | |
3263 | ||
391f503d AG |
3264 | /* The synchronization protocol is incompatible with mixed family |
3265 | * services | |
3266 | */ | |
3267 | if (net_ipvs(net)->mixed_address_family_dests > 0) | |
3268 | return -EINVAL; | |
3269 | ||
f131315f HS |
3270 | return start_sync_thread(net, |
3271 | nla_get_u32(attrs[IPVS_DAEMON_ATTR_STATE]), | |
9a812198 JV |
3272 | nla_data(attrs[IPVS_DAEMON_ATTR_MCAST_IFN]), |
3273 | nla_get_u32(attrs[IPVS_DAEMON_ATTR_SYNC_ID])); | |
3274 | } | |
3275 | ||
f131315f | 3276 | static int ip_vs_genl_del_daemon(struct net *net, struct nlattr **attrs) |
9a812198 JV |
3277 | { |
3278 | if (!attrs[IPVS_DAEMON_ATTR_STATE]) | |
3279 | return -EINVAL; | |
3280 | ||
f131315f HS |
3281 | return stop_sync_thread(net, |
3282 | nla_get_u32(attrs[IPVS_DAEMON_ATTR_STATE])); | |
9a812198 JV |
3283 | } |
3284 | ||
9330419d | 3285 | static int ip_vs_genl_set_config(struct net *net, struct nlattr **attrs) |
9a812198 JV |
3286 | { |
3287 | struct ip_vs_timeout_user t; | |
3288 | ||
9330419d | 3289 | __ip_vs_get_timeouts(net, &t); |
9a812198 JV |
3290 | |
3291 | if (attrs[IPVS_CMD_ATTR_TIMEOUT_TCP]) | |
3292 | t.tcp_timeout = nla_get_u32(attrs[IPVS_CMD_ATTR_TIMEOUT_TCP]); | |
3293 | ||
3294 | if (attrs[IPVS_CMD_ATTR_TIMEOUT_TCP_FIN]) | |
3295 | t.tcp_fin_timeout = | |
3296 | nla_get_u32(attrs[IPVS_CMD_ATTR_TIMEOUT_TCP_FIN]); | |
3297 | ||
3298 | if (attrs[IPVS_CMD_ATTR_TIMEOUT_UDP]) | |
3299 | t.udp_timeout = nla_get_u32(attrs[IPVS_CMD_ATTR_TIMEOUT_UDP]); | |
3300 | ||
9330419d | 3301 | return ip_vs_set_timeout(net, &t); |
9a812198 JV |
3302 | } |
3303 | ||
ae1d48b2 | 3304 | static int ip_vs_genl_set_daemon(struct sk_buff *skb, struct genl_info *info) |
9a812198 | 3305 | { |
9a812198 | 3306 | int ret = 0, cmd; |
fc723250 | 3307 | struct net *net; |
a0840e2e | 3308 | struct netns_ipvs *ipvs; |
9a812198 | 3309 | |
fc723250 | 3310 | net = skb_sknet(skb); |
a0840e2e | 3311 | ipvs = net_ipvs(net); |
9a812198 JV |
3312 | cmd = info->genlhdr->cmd; |
3313 | ||
ae1d48b2 | 3314 | if (cmd == IPVS_CMD_NEW_DAEMON || cmd == IPVS_CMD_DEL_DAEMON) { |
9a812198 JV |
3315 | struct nlattr *daemon_attrs[IPVS_DAEMON_ATTR_MAX + 1]; |
3316 | ||
ae1d48b2 | 3317 | mutex_lock(&ipvs->sync_mutex); |
9a812198 JV |
3318 | if (!info->attrs[IPVS_CMD_ATTR_DAEMON] || |
3319 | nla_parse_nested(daemon_attrs, IPVS_DAEMON_ATTR_MAX, | |
3320 | info->attrs[IPVS_CMD_ATTR_DAEMON], | |
3321 | ip_vs_daemon_policy)) { | |
3322 | ret = -EINVAL; | |
3323 | goto out; | |
3324 | } | |
3325 | ||
3326 | if (cmd == IPVS_CMD_NEW_DAEMON) | |
f131315f | 3327 | ret = ip_vs_genl_new_daemon(net, daemon_attrs); |
9a812198 | 3328 | else |
f131315f | 3329 | ret = ip_vs_genl_del_daemon(net, daemon_attrs); |
ae1d48b2 HS |
3330 | out: |
3331 | mutex_unlock(&ipvs->sync_mutex); | |
3332 | } | |
3333 | return ret; | |
3334 | } | |
3335 | ||
3336 | static int ip_vs_genl_set_cmd(struct sk_buff *skb, struct genl_info *info) | |
3337 | { | |
3338 | struct ip_vs_service *svc = NULL; | |
3339 | struct ip_vs_service_user_kern usvc; | |
3340 | struct ip_vs_dest_user_kern udest; | |
3341 | int ret = 0, cmd; | |
3342 | int need_full_svc = 0, need_full_dest = 0; | |
3343 | struct net *net; | |
ae1d48b2 HS |
3344 | |
3345 | net = skb_sknet(skb); | |
ae1d48b2 HS |
3346 | cmd = info->genlhdr->cmd; |
3347 | ||
3348 | mutex_lock(&__ip_vs_mutex); | |
3349 | ||
3350 | if (cmd == IPVS_CMD_FLUSH) { | |
578bc3ef | 3351 | ret = ip_vs_flush(net, false); |
ae1d48b2 HS |
3352 | goto out; |
3353 | } else if (cmd == IPVS_CMD_SET_CONFIG) { | |
3354 | ret = ip_vs_genl_set_config(net, info->attrs); | |
9a812198 JV |
3355 | goto out; |
3356 | } else if (cmd == IPVS_CMD_ZERO && | |
3357 | !info->attrs[IPVS_CMD_ATTR_SERVICE]) { | |
fc723250 | 3358 | ret = ip_vs_zero_all(net); |
9a812198 JV |
3359 | goto out; |
3360 | } | |
3361 | ||
3362 | /* All following commands require a service argument, so check if we | |
3363 | * received a valid one. We need a full service specification when | |
3364 | * adding / editing a service. Only identifying members otherwise. */ | |
3365 | if (cmd == IPVS_CMD_NEW_SERVICE || cmd == IPVS_CMD_SET_SERVICE) | |
3366 | need_full_svc = 1; | |
3367 | ||
fc723250 | 3368 | ret = ip_vs_genl_parse_service(net, &usvc, |
9a812198 | 3369 | info->attrs[IPVS_CMD_ATTR_SERVICE], |
26c15cfd | 3370 | need_full_svc, &svc); |
9a812198 JV |
3371 | if (ret) |
3372 | goto out; | |
3373 | ||
9a812198 JV |
3374 | /* Unless we're adding a new service, the service must already exist */ |
3375 | if ((cmd != IPVS_CMD_NEW_SERVICE) && (svc == NULL)) { | |
3376 | ret = -ESRCH; | |
3377 | goto out; | |
3378 | } | |
3379 | ||
3380 | /* Destination commands require a valid destination argument. For | |
3381 | * adding / editing a destination, we need a full destination | |
3382 | * specification. */ | |
3383 | if (cmd == IPVS_CMD_NEW_DEST || cmd == IPVS_CMD_SET_DEST || | |
3384 | cmd == IPVS_CMD_DEL_DEST) { | |
3385 | if (cmd != IPVS_CMD_DEL_DEST) | |
3386 | need_full_dest = 1; | |
3387 | ||
3388 | ret = ip_vs_genl_parse_dest(&udest, | |
3389 | info->attrs[IPVS_CMD_ATTR_DEST], | |
3390 | need_full_dest); | |
3391 | if (ret) | |
3392 | goto out; | |
6cff339b AG |
3393 | |
3394 | /* Old protocols did not allow the user to specify address | |
3395 | * family, so we set it to zero instead. We also didn't | |
3396 | * allow heterogeneous pools in the old code, so it's safe | |
3397 | * to assume that this will have the same address family as | |
3398 | * the service. | |
3399 | */ | |
3400 | if (udest.af == 0) | |
3401 | udest.af = svc->af; | |
bc18d37f AG |
3402 | |
3403 | if (udest.af != svc->af) { | |
3404 | /* The synchronization protocol is incompatible | |
3405 | * with mixed family services | |
3406 | */ | |
3407 | if (net_ipvs(net)->sync_state) { | |
3408 | ret = -EINVAL; | |
3409 | goto out; | |
3410 | } | |
3411 | ||
3412 | /* Which connection types do we support? */ | |
3413 | switch (udest.conn_flags) { | |
3414 | case IP_VS_CONN_F_TUNNEL: | |
3415 | /* We are able to forward this */ | |
3416 | break; | |
3417 | default: | |
3418 | ret = -EINVAL; | |
3419 | goto out; | |
3420 | } | |
3421 | } | |
9a812198 JV |
3422 | } |
3423 | ||
3424 | switch (cmd) { | |
3425 | case IPVS_CMD_NEW_SERVICE: | |
3426 | if (svc == NULL) | |
fc723250 | 3427 | ret = ip_vs_add_service(net, &usvc, &svc); |
9a812198 JV |
3428 | else |
3429 | ret = -EEXIST; | |
3430 | break; | |
3431 | case IPVS_CMD_SET_SERVICE: | |
3432 | ret = ip_vs_edit_service(svc, &usvc); | |
3433 | break; | |
3434 | case IPVS_CMD_DEL_SERVICE: | |
3435 | ret = ip_vs_del_service(svc); | |
26c15cfd | 3436 | /* do not use svc, it can be freed */ |
9a812198 JV |
3437 | break; |
3438 | case IPVS_CMD_NEW_DEST: | |
3439 | ret = ip_vs_add_dest(svc, &udest); | |
3440 | break; | |
3441 | case IPVS_CMD_SET_DEST: | |
3442 | ret = ip_vs_edit_dest(svc, &udest); | |
3443 | break; | |
3444 | case IPVS_CMD_DEL_DEST: | |
3445 | ret = ip_vs_del_dest(svc, &udest); | |
3446 | break; | |
3447 | case IPVS_CMD_ZERO: | |
3448 | ret = ip_vs_zero_service(svc); | |
3449 | break; | |
3450 | default: | |
3451 | ret = -EINVAL; | |
3452 | } | |
3453 | ||
3454 | out: | |
9a812198 JV |
3455 | mutex_unlock(&__ip_vs_mutex); |
3456 | ||
3457 | return ret; | |
3458 | } | |
3459 | ||
3460 | static int ip_vs_genl_get_cmd(struct sk_buff *skb, struct genl_info *info) | |
3461 | { | |
3462 | struct sk_buff *msg; | |
3463 | void *reply; | |
3464 | int ret, cmd, reply_cmd; | |
fc723250 | 3465 | struct net *net; |
9a812198 | 3466 | |
fc723250 | 3467 | net = skb_sknet(skb); |
9a812198 JV |
3468 | cmd = info->genlhdr->cmd; |
3469 | ||
3470 | if (cmd == IPVS_CMD_GET_SERVICE) | |
3471 | reply_cmd = IPVS_CMD_NEW_SERVICE; | |
3472 | else if (cmd == IPVS_CMD_GET_INFO) | |
3473 | reply_cmd = IPVS_CMD_SET_INFO; | |
3474 | else if (cmd == IPVS_CMD_GET_CONFIG) | |
3475 | reply_cmd = IPVS_CMD_SET_CONFIG; | |
3476 | else { | |
1e3e238e | 3477 | pr_err("unknown Generic Netlink command\n"); |
9a812198 JV |
3478 | return -EINVAL; |
3479 | } | |
3480 | ||
3481 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
3482 | if (!msg) | |
3483 | return -ENOMEM; | |
3484 | ||
3485 | mutex_lock(&__ip_vs_mutex); | |
3486 | ||
3487 | reply = genlmsg_put_reply(msg, info, &ip_vs_genl_family, 0, reply_cmd); | |
3488 | if (reply == NULL) | |
3489 | goto nla_put_failure; | |
3490 | ||
3491 | switch (cmd) { | |
3492 | case IPVS_CMD_GET_SERVICE: | |
3493 | { | |
3494 | struct ip_vs_service *svc; | |
3495 | ||
fc723250 HS |
3496 | svc = ip_vs_genl_find_service(net, |
3497 | info->attrs[IPVS_CMD_ATTR_SERVICE]); | |
9a812198 JV |
3498 | if (IS_ERR(svc)) { |
3499 | ret = PTR_ERR(svc); | |
3500 | goto out_err; | |
3501 | } else if (svc) { | |
3502 | ret = ip_vs_genl_fill_service(msg, svc); | |
9a812198 JV |
3503 | if (ret) |
3504 | goto nla_put_failure; | |
3505 | } else { | |
3506 | ret = -ESRCH; | |
3507 | goto out_err; | |
3508 | } | |
3509 | ||
3510 | break; | |
3511 | } | |
3512 | ||
3513 | case IPVS_CMD_GET_CONFIG: | |
3514 | { | |
3515 | struct ip_vs_timeout_user t; | |
3516 | ||
9330419d | 3517 | __ip_vs_get_timeouts(net, &t); |
9a812198 | 3518 | #ifdef CONFIG_IP_VS_PROTO_TCP |
969e8e25 DM |
3519 | if (nla_put_u32(msg, IPVS_CMD_ATTR_TIMEOUT_TCP, |
3520 | t.tcp_timeout) || | |
3521 | nla_put_u32(msg, IPVS_CMD_ATTR_TIMEOUT_TCP_FIN, | |
3522 | t.tcp_fin_timeout)) | |
3523 | goto nla_put_failure; | |
9a812198 JV |
3524 | #endif |
3525 | #ifdef CONFIG_IP_VS_PROTO_UDP | |
969e8e25 DM |
3526 | if (nla_put_u32(msg, IPVS_CMD_ATTR_TIMEOUT_UDP, t.udp_timeout)) |
3527 | goto nla_put_failure; | |
9a812198 JV |
3528 | #endif |
3529 | ||
3530 | break; | |
3531 | } | |
3532 | ||
3533 | case IPVS_CMD_GET_INFO: | |
969e8e25 DM |
3534 | if (nla_put_u32(msg, IPVS_INFO_ATTR_VERSION, |
3535 | IP_VS_VERSION_CODE) || | |
3536 | nla_put_u32(msg, IPVS_INFO_ATTR_CONN_TAB_SIZE, | |
3537 | ip_vs_conn_tab_size)) | |
3538 | goto nla_put_failure; | |
9a812198 JV |
3539 | break; |
3540 | } | |
3541 | ||
3542 | genlmsg_end(msg, reply); | |
134e6375 | 3543 | ret = genlmsg_reply(msg, info); |
9a812198 JV |
3544 | goto out; |
3545 | ||
3546 | nla_put_failure: | |
1e3e238e | 3547 | pr_err("not enough space in Netlink message\n"); |
9a812198 JV |
3548 | ret = -EMSGSIZE; |
3549 | ||
3550 | out_err: | |
3551 | nlmsg_free(msg); | |
3552 | out: | |
3553 | mutex_unlock(&__ip_vs_mutex); | |
3554 | ||
3555 | return ret; | |
3556 | } | |
3557 | ||
3558 | ||
c61b0c13 | 3559 | static const struct genl_ops ip_vs_genl_ops[] = { |
9a812198 JV |
3560 | { |
3561 | .cmd = IPVS_CMD_NEW_SERVICE, | |
3562 | .flags = GENL_ADMIN_PERM, | |
3563 | .policy = ip_vs_cmd_policy, | |
3564 | .doit = ip_vs_genl_set_cmd, | |
3565 | }, | |
3566 | { | |
3567 | .cmd = IPVS_CMD_SET_SERVICE, | |
3568 | .flags = GENL_ADMIN_PERM, | |
3569 | .policy = ip_vs_cmd_policy, | |
3570 | .doit = ip_vs_genl_set_cmd, | |
3571 | }, | |
3572 | { | |
3573 | .cmd = IPVS_CMD_DEL_SERVICE, | |
3574 | .flags = GENL_ADMIN_PERM, | |
3575 | .policy = ip_vs_cmd_policy, | |
3576 | .doit = ip_vs_genl_set_cmd, | |
3577 | }, | |
3578 | { | |
3579 | .cmd = IPVS_CMD_GET_SERVICE, | |
3580 | .flags = GENL_ADMIN_PERM, | |
3581 | .doit = ip_vs_genl_get_cmd, | |
3582 | .dumpit = ip_vs_genl_dump_services, | |
3583 | .policy = ip_vs_cmd_policy, | |
3584 | }, | |
3585 | { | |
3586 | .cmd = IPVS_CMD_NEW_DEST, | |
3587 | .flags = GENL_ADMIN_PERM, | |
3588 | .policy = ip_vs_cmd_policy, | |
3589 | .doit = ip_vs_genl_set_cmd, | |
3590 | }, | |
3591 | { | |
3592 | .cmd = IPVS_CMD_SET_DEST, | |
3593 | .flags = GENL_ADMIN_PERM, | |
3594 | .policy = ip_vs_cmd_policy, | |
3595 | .doit = ip_vs_genl_set_cmd, | |
3596 | }, | |
3597 | { | |
3598 | .cmd = IPVS_CMD_DEL_DEST, | |
3599 | .flags = GENL_ADMIN_PERM, | |
3600 | .policy = ip_vs_cmd_policy, | |
3601 | .doit = ip_vs_genl_set_cmd, | |
3602 | }, | |
3603 | { | |
3604 | .cmd = IPVS_CMD_GET_DEST, | |
3605 | .flags = GENL_ADMIN_PERM, | |
3606 | .policy = ip_vs_cmd_policy, | |
3607 | .dumpit = ip_vs_genl_dump_dests, | |
3608 | }, | |
3609 | { | |
3610 | .cmd = IPVS_CMD_NEW_DAEMON, | |
3611 | .flags = GENL_ADMIN_PERM, | |
3612 | .policy = ip_vs_cmd_policy, | |
ae1d48b2 | 3613 | .doit = ip_vs_genl_set_daemon, |
9a812198 JV |
3614 | }, |
3615 | { | |
3616 | .cmd = IPVS_CMD_DEL_DAEMON, | |
3617 | .flags = GENL_ADMIN_PERM, | |
3618 | .policy = ip_vs_cmd_policy, | |
ae1d48b2 | 3619 | .doit = ip_vs_genl_set_daemon, |
9a812198 JV |
3620 | }, |
3621 | { | |
3622 | .cmd = IPVS_CMD_GET_DAEMON, | |
3623 | .flags = GENL_ADMIN_PERM, | |
3624 | .dumpit = ip_vs_genl_dump_daemons, | |
3625 | }, | |
3626 | { | |
3627 | .cmd = IPVS_CMD_SET_CONFIG, | |
3628 | .flags = GENL_ADMIN_PERM, | |
3629 | .policy = ip_vs_cmd_policy, | |
3630 | .doit = ip_vs_genl_set_cmd, | |
3631 | }, | |
3632 | { | |
3633 | .cmd = IPVS_CMD_GET_CONFIG, | |
3634 | .flags = GENL_ADMIN_PERM, | |
3635 | .doit = ip_vs_genl_get_cmd, | |
3636 | }, | |
3637 | { | |
3638 | .cmd = IPVS_CMD_GET_INFO, | |
3639 | .flags = GENL_ADMIN_PERM, | |
3640 | .doit = ip_vs_genl_get_cmd, | |
3641 | }, | |
3642 | { | |
3643 | .cmd = IPVS_CMD_ZERO, | |
3644 | .flags = GENL_ADMIN_PERM, | |
3645 | .policy = ip_vs_cmd_policy, | |
3646 | .doit = ip_vs_genl_set_cmd, | |
3647 | }, | |
3648 | { | |
3649 | .cmd = IPVS_CMD_FLUSH, | |
3650 | .flags = GENL_ADMIN_PERM, | |
3651 | .doit = ip_vs_genl_set_cmd, | |
3652 | }, | |
3653 | }; | |
3654 | ||
3655 | static int __init ip_vs_genl_register(void) | |
3656 | { | |
8f698d54 | 3657 | return genl_register_family_with_ops(&ip_vs_genl_family, |
c53ed742 | 3658 | ip_vs_genl_ops); |
9a812198 JV |
3659 | } |
3660 | ||
3661 | static void ip_vs_genl_unregister(void) | |
3662 | { | |
3663 | genl_unregister_family(&ip_vs_genl_family); | |
3664 | } | |
3665 | ||
3666 | /* End of Generic Netlink interface definitions */ | |
3667 | ||
61b1ab45 HS |
3668 | /* |
3669 | * per netns intit/exit func. | |
3670 | */ | |
14e40546 | 3671 | #ifdef CONFIG_SYSCTL |
2b2d2808 | 3672 | static int __net_init ip_vs_control_net_init_sysctl(struct net *net) |
61b1ab45 | 3673 | { |
fc723250 HS |
3674 | int idx; |
3675 | struct netns_ipvs *ipvs = net_ipvs(net); | |
a0840e2e | 3676 | struct ctl_table *tbl; |
fc723250 | 3677 | |
a0840e2e HS |
3678 | atomic_set(&ipvs->dropentry, 0); |
3679 | spin_lock_init(&ipvs->dropentry_lock); | |
3680 | spin_lock_init(&ipvs->droppacket_lock); | |
3681 | spin_lock_init(&ipvs->securetcp_lock); | |
a0840e2e HS |
3682 | |
3683 | if (!net_eq(net, &init_net)) { | |
3684 | tbl = kmemdup(vs_vars, sizeof(vs_vars), GFP_KERNEL); | |
3685 | if (tbl == NULL) | |
14e40546 | 3686 | return -ENOMEM; |
464dc801 EB |
3687 | |
3688 | /* Don't export sysctls to unprivileged users */ | |
3689 | if (net->user_ns != &init_user_ns) | |
3690 | tbl[0].procname = NULL; | |
a0840e2e HS |
3691 | } else |
3692 | tbl = vs_vars; | |
3693 | /* Initialize sysctl defaults */ | |
3694 | idx = 0; | |
3695 | ipvs->sysctl_amemthresh = 1024; | |
3696 | tbl[idx++].data = &ipvs->sysctl_amemthresh; | |
3697 | ipvs->sysctl_am_droprate = 10; | |
3698 | tbl[idx++].data = &ipvs->sysctl_am_droprate; | |
3699 | tbl[idx++].data = &ipvs->sysctl_drop_entry; | |
3700 | tbl[idx++].data = &ipvs->sysctl_drop_packet; | |
3701 | #ifdef CONFIG_IP_VS_NFCT | |
3702 | tbl[idx++].data = &ipvs->sysctl_conntrack; | |
3703 | #endif | |
3704 | tbl[idx++].data = &ipvs->sysctl_secure_tcp; | |
3705 | ipvs->sysctl_snat_reroute = 1; | |
3706 | tbl[idx++].data = &ipvs->sysctl_snat_reroute; | |
3707 | ipvs->sysctl_sync_ver = 1; | |
3708 | tbl[idx++].data = &ipvs->sysctl_sync_ver; | |
f73181c8 PNA |
3709 | ipvs->sysctl_sync_ports = 1; |
3710 | tbl[idx++].data = &ipvs->sysctl_sync_ports; | |
4d0c875d | 3711 | tbl[idx++].data = &ipvs->sysctl_sync_persist_mode; |
1c003b15 PNA |
3712 | ipvs->sysctl_sync_qlen_max = nr_free_buffer_pages() / 32; |
3713 | tbl[idx++].data = &ipvs->sysctl_sync_qlen_max; | |
3714 | ipvs->sysctl_sync_sock_size = 0; | |
3715 | tbl[idx++].data = &ipvs->sysctl_sync_sock_size; | |
a0840e2e HS |
3716 | tbl[idx++].data = &ipvs->sysctl_cache_bypass; |
3717 | tbl[idx++].data = &ipvs->sysctl_expire_nodest_conn; | |
c6c96c18 AF |
3718 | tbl[idx++].data = &ipvs->sysctl_sloppy_tcp; |
3719 | tbl[idx++].data = &ipvs->sysctl_sloppy_sctp; | |
a0840e2e | 3720 | tbl[idx++].data = &ipvs->sysctl_expire_quiescent_template; |
59e0350e SH |
3721 | ipvs->sysctl_sync_threshold[0] = DEFAULT_SYNC_THRESHOLD; |
3722 | ipvs->sysctl_sync_threshold[1] = DEFAULT_SYNC_PERIOD; | |
a0840e2e HS |
3723 | tbl[idx].data = &ipvs->sysctl_sync_threshold; |
3724 | tbl[idx++].maxlen = sizeof(ipvs->sysctl_sync_threshold); | |
749c42b6 JA |
3725 | ipvs->sysctl_sync_refresh_period = DEFAULT_SYNC_REFRESH_PERIOD; |
3726 | tbl[idx++].data = &ipvs->sysctl_sync_refresh_period; | |
3727 | ipvs->sysctl_sync_retries = clamp_t(int, DEFAULT_SYNC_RETRIES, 0, 3); | |
3728 | tbl[idx++].data = &ipvs->sysctl_sync_retries; | |
a0840e2e | 3729 | tbl[idx++].data = &ipvs->sysctl_nat_icmp_send; |
3654e611 JA |
3730 | ipvs->sysctl_pmtu_disc = 1; |
3731 | tbl[idx++].data = &ipvs->sysctl_pmtu_disc; | |
0c12582f | 3732 | tbl[idx++].data = &ipvs->sysctl_backup_only; |
a0840e2e HS |
3733 | |
3734 | ||
ec8f23ce | 3735 | ipvs->sysctl_hdr = register_net_sysctl(net, "net/ipv4/vs", tbl); |
0443929f SH |
3736 | if (ipvs->sysctl_hdr == NULL) { |
3737 | if (!net_eq(net, &init_net)) | |
3738 | kfree(tbl); | |
14e40546 | 3739 | return -ENOMEM; |
0443929f | 3740 | } |
6ef757f9 | 3741 | ip_vs_start_estimator(net, &ipvs->tot_stats); |
a0840e2e | 3742 | ipvs->sysctl_tbl = tbl; |
f6340ee0 HS |
3743 | /* Schedule defense work */ |
3744 | INIT_DELAYED_WORK(&ipvs->defense_work, defense_work_handler); | |
3745 | schedule_delayed_work(&ipvs->defense_work, DEFENSE_TIMER_PERIOD); | |
61b1ab45 | 3746 | |
61b1ab45 | 3747 | return 0; |
61b1ab45 HS |
3748 | } |
3749 | ||
2b2d2808 | 3750 | static void __net_exit ip_vs_control_net_cleanup_sysctl(struct net *net) |
61b1ab45 | 3751 | { |
b17fc996 HS |
3752 | struct netns_ipvs *ipvs = net_ipvs(net); |
3753 | ||
f2431e6e HS |
3754 | cancel_delayed_work_sync(&ipvs->defense_work); |
3755 | cancel_work_sync(&ipvs->defense_work.work); | |
a0840e2e | 3756 | unregister_net_sysctl_table(ipvs->sysctl_hdr); |
9802d21e | 3757 | ip_vs_stop_estimator(net, &ipvs->tot_stats); |
14e40546 SH |
3758 | } |
3759 | ||
3760 | #else | |
3761 | ||
2b2d2808 CG |
3762 | static int __net_init ip_vs_control_net_init_sysctl(struct net *net) { return 0; } |
3763 | static void __net_exit ip_vs_control_net_cleanup_sysctl(struct net *net) { } | |
14e40546 | 3764 | |
0443929f | 3765 | #endif |
14e40546 | 3766 | |
7a4f0761 HS |
3767 | static struct notifier_block ip_vs_dst_notifier = { |
3768 | .notifier_call = ip_vs_dst_event, | |
3769 | }; | |
3770 | ||
503cf15a | 3771 | int __net_init ip_vs_control_net_init(struct net *net) |
14e40546 | 3772 | { |
827da44c | 3773 | int i, idx; |
14e40546 SH |
3774 | struct netns_ipvs *ipvs = net_ipvs(net); |
3775 | ||
14e40546 SH |
3776 | /* Initialize rs_table */ |
3777 | for (idx = 0; idx < IP_VS_RTAB_SIZE; idx++) | |
276472ea | 3778 | INIT_HLIST_HEAD(&ipvs->rs_table[idx]); |
14e40546 SH |
3779 | |
3780 | INIT_LIST_HEAD(&ipvs->dest_trash); | |
578bc3ef JA |
3781 | spin_lock_init(&ipvs->dest_trash_lock); |
3782 | setup_timer(&ipvs->dest_trash_timer, ip_vs_dest_trash_expire, | |
3783 | (unsigned long) net); | |
14e40546 SH |
3784 | atomic_set(&ipvs->ftpsvc_counter, 0); |
3785 | atomic_set(&ipvs->nullsvc_counter, 0); | |
3786 | ||
3787 | /* procfs stats */ | |
3788 | ipvs->tot_stats.cpustats = alloc_percpu(struct ip_vs_cpu_stats); | |
0a9ee813 | 3789 | if (!ipvs->tot_stats.cpustats) |
14e40546 | 3790 | return -ENOMEM; |
0a9ee813 | 3791 | |
827da44c JS |
3792 | for_each_possible_cpu(i) { |
3793 | struct ip_vs_cpu_stats *ipvs_tot_stats; | |
3794 | ipvs_tot_stats = per_cpu_ptr(ipvs->tot_stats.cpustats, i); | |
3795 | u64_stats_init(&ipvs_tot_stats->syncp); | |
3796 | } | |
3797 | ||
14e40546 SH |
3798 | spin_lock_init(&ipvs->tot_stats.lock); |
3799 | ||
d4beaa66 G |
3800 | proc_create("ip_vs", 0, net->proc_net, &ip_vs_info_fops); |
3801 | proc_create("ip_vs_stats", 0, net->proc_net, &ip_vs_stats_fops); | |
3802 | proc_create("ip_vs_stats_percpu", 0, net->proc_net, | |
3803 | &ip_vs_stats_percpu_fops); | |
14e40546 | 3804 | |
503cf15a | 3805 | if (ip_vs_control_net_init_sysctl(net)) |
14e40546 SH |
3806 | goto err; |
3807 | ||
3808 | return 0; | |
3809 | ||
3810 | err: | |
2a0751af | 3811 | free_percpu(ipvs->tot_stats.cpustats); |
61b1ab45 HS |
3812 | return -ENOMEM; |
3813 | } | |
3814 | ||
503cf15a | 3815 | void __net_exit ip_vs_control_net_cleanup(struct net *net) |
61b1ab45 | 3816 | { |
b17fc996 HS |
3817 | struct netns_ipvs *ipvs = net_ipvs(net); |
3818 | ||
f2431e6e | 3819 | ip_vs_trash_cleanup(net); |
503cf15a | 3820 | ip_vs_control_net_cleanup_sysctl(net); |
ece31ffd G |
3821 | remove_proc_entry("ip_vs_stats_percpu", net->proc_net); |
3822 | remove_proc_entry("ip_vs_stats", net->proc_net); | |
3823 | remove_proc_entry("ip_vs", net->proc_net); | |
2a0751af | 3824 | free_percpu(ipvs->tot_stats.cpustats); |
61b1ab45 HS |
3825 | } |
3826 | ||
8537de8a | 3827 | int __init ip_vs_register_nl_ioctl(void) |
1da177e4 | 3828 | { |
fc723250 | 3829 | int ret; |
1da177e4 | 3830 | |
1da177e4 LT |
3831 | ret = nf_register_sockopt(&ip_vs_sockopts); |
3832 | if (ret) { | |
1e3e238e | 3833 | pr_err("cannot register sockopt.\n"); |
7a4f0761 | 3834 | goto err_sock; |
1da177e4 LT |
3835 | } |
3836 | ||
9a812198 JV |
3837 | ret = ip_vs_genl_register(); |
3838 | if (ret) { | |
1e3e238e | 3839 | pr_err("cannot register Generic Netlink interface.\n"); |
7a4f0761 | 3840 | goto err_genl; |
9a812198 | 3841 | } |
1da177e4 | 3842 | return 0; |
fc723250 | 3843 | |
7a4f0761 HS |
3844 | err_genl: |
3845 | nf_unregister_sockopt(&ip_vs_sockopts); | |
3846 | err_sock: | |
fc723250 | 3847 | return ret; |
1da177e4 LT |
3848 | } |
3849 | ||
8537de8a HS |
3850 | void ip_vs_unregister_nl_ioctl(void) |
3851 | { | |
3852 | ip_vs_genl_unregister(); | |
3853 | nf_unregister_sockopt(&ip_vs_sockopts); | |
3854 | } | |
3855 | ||
3856 | int __init ip_vs_control_init(void) | |
3857 | { | |
3858 | int idx; | |
3859 | int ret; | |
3860 | ||
3861 | EnterFunction(2); | |
3862 | ||
276472ea | 3863 | /* Initialize svc_table, ip_vs_svc_fwm_table */ |
8537de8a | 3864 | for (idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { |
ceec4c38 JA |
3865 | INIT_HLIST_HEAD(&ip_vs_svc_table[idx]); |
3866 | INIT_HLIST_HEAD(&ip_vs_svc_fwm_table[idx]); | |
8537de8a HS |
3867 | } |
3868 | ||
3869 | smp_wmb(); /* Do we really need it now ? */ | |
3870 | ||
3871 | ret = register_netdevice_notifier(&ip_vs_dst_notifier); | |
3872 | if (ret < 0) | |
3873 | return ret; | |
3874 | ||
3875 | LeaveFunction(2); | |
3876 | return 0; | |
3877 | } | |
3878 | ||
1da177e4 LT |
3879 | |
3880 | void ip_vs_control_cleanup(void) | |
3881 | { | |
3882 | EnterFunction(2); | |
7676e345 | 3883 | unregister_netdevice_notifier(&ip_vs_dst_notifier); |
1da177e4 LT |
3884 | LeaveFunction(2); |
3885 | } |