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 LT |
57 | |
58 | /* lock for service table */ | |
59 | static DEFINE_RWLOCK(__ip_vs_svc_lock); | |
60 | ||
1da177e4 | 61 | /* sysctl variables */ |
1da177e4 LT |
62 | |
63 | #ifdef CONFIG_IP_VS_DEBUG | |
64 | static int sysctl_ip_vs_debug_level = 0; | |
65 | ||
66 | int ip_vs_get_debug_level(void) | |
67 | { | |
68 | return sysctl_ip_vs_debug_level; | |
69 | } | |
70 | #endif | |
71 | ||
7a4f0761 HS |
72 | |
73 | /* Protos */ | |
74 | static void __ip_vs_del_service(struct ip_vs_service *svc); | |
75 | ||
76 | ||
09571c7a VB |
77 | #ifdef CONFIG_IP_VS_IPV6 |
78 | /* Taken from rt6_fill_node() in net/ipv6/route.c, is there a better way? */ | |
c24584c0 ED |
79 | static bool __ip_vs_addr_is_local_v6(struct net *net, |
80 | const struct in6_addr *addr) | |
09571c7a | 81 | { |
4c9483b2 DM |
82 | struct flowi6 fl6 = { |
83 | .daddr = *addr, | |
09571c7a | 84 | }; |
c24584c0 ED |
85 | struct dst_entry *dst = ip6_route_output(net, NULL, &fl6); |
86 | bool is_local; | |
09571c7a | 87 | |
c24584c0 | 88 | is_local = !dst->error && dst->dev && (dst->dev->flags & IFF_LOOPBACK); |
09571c7a | 89 | |
c24584c0 ED |
90 | dst_release(dst); |
91 | return is_local; | |
09571c7a VB |
92 | } |
93 | #endif | |
14e40546 SH |
94 | |
95 | #ifdef CONFIG_SYSCTL | |
1da177e4 | 96 | /* |
af9debd4 JA |
97 | * update_defense_level is called from keventd and from sysctl, |
98 | * so it needs to protect itself from softirqs | |
1da177e4 | 99 | */ |
9330419d | 100 | static void update_defense_level(struct netns_ipvs *ipvs) |
1da177e4 LT |
101 | { |
102 | struct sysinfo i; | |
103 | static int old_secure_tcp = 0; | |
104 | int availmem; | |
105 | int nomem; | |
106 | int to_change = -1; | |
107 | ||
108 | /* we only count free and buffered memory (in pages) */ | |
109 | si_meminfo(&i); | |
110 | availmem = i.freeram + i.bufferram; | |
111 | /* however in linux 2.5 the i.bufferram is total page cache size, | |
112 | we need adjust it */ | |
113 | /* si_swapinfo(&i); */ | |
114 | /* availmem = availmem - (i.totalswap - i.freeswap); */ | |
115 | ||
a0840e2e | 116 | nomem = (availmem < ipvs->sysctl_amemthresh); |
1da177e4 | 117 | |
af9debd4 JA |
118 | local_bh_disable(); |
119 | ||
1da177e4 | 120 | /* drop_entry */ |
a0840e2e HS |
121 | spin_lock(&ipvs->dropentry_lock); |
122 | switch (ipvs->sysctl_drop_entry) { | |
1da177e4 | 123 | case 0: |
a0840e2e | 124 | atomic_set(&ipvs->dropentry, 0); |
1da177e4 LT |
125 | break; |
126 | case 1: | |
127 | if (nomem) { | |
a0840e2e HS |
128 | atomic_set(&ipvs->dropentry, 1); |
129 | ipvs->sysctl_drop_entry = 2; | |
1da177e4 | 130 | } else { |
a0840e2e | 131 | atomic_set(&ipvs->dropentry, 0); |
1da177e4 LT |
132 | } |
133 | break; | |
134 | case 2: | |
135 | if (nomem) { | |
a0840e2e | 136 | atomic_set(&ipvs->dropentry, 1); |
1da177e4 | 137 | } else { |
a0840e2e HS |
138 | atomic_set(&ipvs->dropentry, 0); |
139 | ipvs->sysctl_drop_entry = 1; | |
1da177e4 LT |
140 | }; |
141 | break; | |
142 | case 3: | |
a0840e2e | 143 | atomic_set(&ipvs->dropentry, 1); |
1da177e4 LT |
144 | break; |
145 | } | |
a0840e2e | 146 | spin_unlock(&ipvs->dropentry_lock); |
1da177e4 LT |
147 | |
148 | /* drop_packet */ | |
a0840e2e HS |
149 | spin_lock(&ipvs->droppacket_lock); |
150 | switch (ipvs->sysctl_drop_packet) { | |
1da177e4 | 151 | case 0: |
a0840e2e | 152 | ipvs->drop_rate = 0; |
1da177e4 LT |
153 | break; |
154 | case 1: | |
155 | if (nomem) { | |
a0840e2e HS |
156 | ipvs->drop_rate = ipvs->drop_counter |
157 | = ipvs->sysctl_amemthresh / | |
158 | (ipvs->sysctl_amemthresh-availmem); | |
159 | ipvs->sysctl_drop_packet = 2; | |
1da177e4 | 160 | } else { |
a0840e2e | 161 | ipvs->drop_rate = 0; |
1da177e4 LT |
162 | } |
163 | break; | |
164 | case 2: | |
165 | if (nomem) { | |
a0840e2e HS |
166 | ipvs->drop_rate = ipvs->drop_counter |
167 | = ipvs->sysctl_amemthresh / | |
168 | (ipvs->sysctl_amemthresh-availmem); | |
1da177e4 | 169 | } else { |
a0840e2e HS |
170 | ipvs->drop_rate = 0; |
171 | ipvs->sysctl_drop_packet = 1; | |
1da177e4 LT |
172 | } |
173 | break; | |
174 | case 3: | |
a0840e2e | 175 | ipvs->drop_rate = ipvs->sysctl_am_droprate; |
1da177e4 LT |
176 | break; |
177 | } | |
a0840e2e | 178 | spin_unlock(&ipvs->droppacket_lock); |
1da177e4 LT |
179 | |
180 | /* secure_tcp */ | |
a0840e2e HS |
181 | spin_lock(&ipvs->securetcp_lock); |
182 | switch (ipvs->sysctl_secure_tcp) { | |
1da177e4 LT |
183 | case 0: |
184 | if (old_secure_tcp >= 2) | |
185 | to_change = 0; | |
186 | break; | |
187 | case 1: | |
188 | if (nomem) { | |
189 | if (old_secure_tcp < 2) | |
190 | to_change = 1; | |
a0840e2e | 191 | ipvs->sysctl_secure_tcp = 2; |
1da177e4 LT |
192 | } else { |
193 | if (old_secure_tcp >= 2) | |
194 | to_change = 0; | |
195 | } | |
196 | break; | |
197 | case 2: | |
198 | if (nomem) { | |
199 | if (old_secure_tcp < 2) | |
200 | to_change = 1; | |
201 | } else { | |
202 | if (old_secure_tcp >= 2) | |
203 | to_change = 0; | |
a0840e2e | 204 | ipvs->sysctl_secure_tcp = 1; |
1da177e4 LT |
205 | } |
206 | break; | |
207 | case 3: | |
208 | if (old_secure_tcp < 2) | |
209 | to_change = 1; | |
210 | break; | |
211 | } | |
a0840e2e | 212 | old_secure_tcp = ipvs->sysctl_secure_tcp; |
1da177e4 | 213 | if (to_change >= 0) |
9330419d | 214 | ip_vs_protocol_timeout_change(ipvs, |
a0840e2e HS |
215 | ipvs->sysctl_secure_tcp > 1); |
216 | spin_unlock(&ipvs->securetcp_lock); | |
af9debd4 JA |
217 | |
218 | local_bh_enable(); | |
1da177e4 LT |
219 | } |
220 | ||
221 | ||
222 | /* | |
223 | * Timer for checking the defense | |
224 | */ | |
225 | #define DEFENSE_TIMER_PERIOD 1*HZ | |
1da177e4 | 226 | |
c4028958 | 227 | static void defense_work_handler(struct work_struct *work) |
1da177e4 | 228 | { |
f6340ee0 HS |
229 | struct netns_ipvs *ipvs = |
230 | container_of(work, struct netns_ipvs, defense_work.work); | |
9330419d HS |
231 | |
232 | update_defense_level(ipvs); | |
a0840e2e | 233 | if (atomic_read(&ipvs->dropentry)) |
f6340ee0 HS |
234 | ip_vs_random_dropentry(ipvs->net); |
235 | schedule_delayed_work(&ipvs->defense_work, DEFENSE_TIMER_PERIOD); | |
1da177e4 | 236 | } |
14e40546 | 237 | #endif |
1da177e4 LT |
238 | |
239 | int | |
240 | ip_vs_use_count_inc(void) | |
241 | { | |
242 | return try_module_get(THIS_MODULE); | |
243 | } | |
244 | ||
245 | void | |
246 | ip_vs_use_count_dec(void) | |
247 | { | |
248 | module_put(THIS_MODULE); | |
249 | } | |
250 | ||
251 | ||
252 | /* | |
253 | * Hash table: for virtual service lookups | |
254 | */ | |
255 | #define IP_VS_SVC_TAB_BITS 8 | |
256 | #define IP_VS_SVC_TAB_SIZE (1 << IP_VS_SVC_TAB_BITS) | |
257 | #define IP_VS_SVC_TAB_MASK (IP_VS_SVC_TAB_SIZE - 1) | |
258 | ||
259 | /* the service table hashed by <protocol, addr, port> */ | |
260 | static struct list_head ip_vs_svc_table[IP_VS_SVC_TAB_SIZE]; | |
261 | /* the service table hashed by fwmark */ | |
262 | static struct list_head ip_vs_svc_fwm_table[IP_VS_SVC_TAB_SIZE]; | |
263 | ||
1da177e4 LT |
264 | |
265 | /* | |
266 | * Returns hash value for virtual service | |
267 | */ | |
95c96174 ED |
268 | static inline unsigned int |
269 | ip_vs_svc_hashkey(struct net *net, int af, unsigned int proto, | |
fc723250 | 270 | const union nf_inet_addr *addr, __be16 port) |
1da177e4 | 271 | { |
95c96174 | 272 | register unsigned int porth = ntohs(port); |
b18610de | 273 | __be32 addr_fold = addr->ip; |
e9836f24 | 274 | __u32 ahash; |
1da177e4 | 275 | |
b18610de JV |
276 | #ifdef CONFIG_IP_VS_IPV6 |
277 | if (af == AF_INET6) | |
278 | addr_fold = addr->ip6[0]^addr->ip6[1]^ | |
279 | addr->ip6[2]^addr->ip6[3]; | |
280 | #endif | |
e9836f24 JA |
281 | ahash = ntohl(addr_fold); |
282 | ahash ^= ((size_t) net >> 8); | |
b18610de | 283 | |
e9836f24 JA |
284 | return (proto ^ ahash ^ (porth >> IP_VS_SVC_TAB_BITS) ^ porth) & |
285 | IP_VS_SVC_TAB_MASK; | |
1da177e4 LT |
286 | } |
287 | ||
288 | /* | |
289 | * Returns hash value of fwmark for virtual service lookup | |
290 | */ | |
95c96174 | 291 | static inline unsigned int ip_vs_svc_fwm_hashkey(struct net *net, __u32 fwmark) |
1da177e4 | 292 | { |
fc723250 | 293 | return (((size_t)net>>8) ^ fwmark) & IP_VS_SVC_TAB_MASK; |
1da177e4 LT |
294 | } |
295 | ||
296 | /* | |
fc723250 | 297 | * Hashes a service in the ip_vs_svc_table by <netns,proto,addr,port> |
1da177e4 LT |
298 | * or in the ip_vs_svc_fwm_table by fwmark. |
299 | * Should be called with locked tables. | |
300 | */ | |
301 | static int ip_vs_svc_hash(struct ip_vs_service *svc) | |
302 | { | |
95c96174 | 303 | unsigned int hash; |
1da177e4 LT |
304 | |
305 | if (svc->flags & IP_VS_SVC_F_HASHED) { | |
1e3e238e HE |
306 | pr_err("%s(): request for already hashed, called from %pF\n", |
307 | __func__, __builtin_return_address(0)); | |
1da177e4 LT |
308 | return 0; |
309 | } | |
310 | ||
311 | if (svc->fwmark == 0) { | |
312 | /* | |
fc723250 | 313 | * Hash it by <netns,protocol,addr,port> in ip_vs_svc_table |
1da177e4 | 314 | */ |
fc723250 HS |
315 | hash = ip_vs_svc_hashkey(svc->net, svc->af, svc->protocol, |
316 | &svc->addr, svc->port); | |
1da177e4 LT |
317 | list_add(&svc->s_list, &ip_vs_svc_table[hash]); |
318 | } else { | |
319 | /* | |
fc723250 | 320 | * Hash it by fwmark in svc_fwm_table |
1da177e4 | 321 | */ |
fc723250 | 322 | hash = ip_vs_svc_fwm_hashkey(svc->net, svc->fwmark); |
1da177e4 LT |
323 | list_add(&svc->f_list, &ip_vs_svc_fwm_table[hash]); |
324 | } | |
325 | ||
326 | svc->flags |= IP_VS_SVC_F_HASHED; | |
327 | /* increase its refcnt because it is referenced by the svc table */ | |
328 | atomic_inc(&svc->refcnt); | |
329 | return 1; | |
330 | } | |
331 | ||
332 | ||
333 | /* | |
fc723250 | 334 | * Unhashes a service from svc_table / svc_fwm_table. |
1da177e4 LT |
335 | * Should be called with locked tables. |
336 | */ | |
337 | static int ip_vs_svc_unhash(struct ip_vs_service *svc) | |
338 | { | |
339 | if (!(svc->flags & IP_VS_SVC_F_HASHED)) { | |
1e3e238e HE |
340 | pr_err("%s(): request for unhash flagged, called from %pF\n", |
341 | __func__, __builtin_return_address(0)); | |
1da177e4 LT |
342 | return 0; |
343 | } | |
344 | ||
345 | if (svc->fwmark == 0) { | |
fc723250 | 346 | /* Remove it from the svc_table table */ |
1da177e4 LT |
347 | list_del(&svc->s_list); |
348 | } else { | |
fc723250 | 349 | /* Remove it from the svc_fwm_table table */ |
1da177e4 LT |
350 | list_del(&svc->f_list); |
351 | } | |
352 | ||
353 | svc->flags &= ~IP_VS_SVC_F_HASHED; | |
354 | atomic_dec(&svc->refcnt); | |
355 | return 1; | |
356 | } | |
357 | ||
358 | ||
359 | /* | |
fc723250 | 360 | * Get service by {netns, proto,addr,port} in the service table. |
1da177e4 | 361 | */ |
b18610de | 362 | static inline struct ip_vs_service * |
fc723250 HS |
363 | __ip_vs_service_find(struct net *net, int af, __u16 protocol, |
364 | const union nf_inet_addr *vaddr, __be16 vport) | |
1da177e4 | 365 | { |
95c96174 | 366 | unsigned int hash; |
1da177e4 LT |
367 | struct ip_vs_service *svc; |
368 | ||
369 | /* Check for "full" addressed entries */ | |
fc723250 | 370 | hash = ip_vs_svc_hashkey(net, af, protocol, vaddr, vport); |
1da177e4 LT |
371 | |
372 | list_for_each_entry(svc, &ip_vs_svc_table[hash], s_list){ | |
b18610de JV |
373 | if ((svc->af == af) |
374 | && ip_vs_addr_equal(af, &svc->addr, vaddr) | |
1da177e4 | 375 | && (svc->port == vport) |
fc723250 HS |
376 | && (svc->protocol == protocol) |
377 | && net_eq(svc->net, net)) { | |
1da177e4 | 378 | /* HIT */ |
1da177e4 LT |
379 | return svc; |
380 | } | |
381 | } | |
382 | ||
383 | return NULL; | |
384 | } | |
385 | ||
386 | ||
387 | /* | |
388 | * Get service by {fwmark} in the service table. | |
389 | */ | |
b18610de | 390 | static inline struct ip_vs_service * |
fc723250 | 391 | __ip_vs_svc_fwm_find(struct net *net, int af, __u32 fwmark) |
1da177e4 | 392 | { |
95c96174 | 393 | unsigned int hash; |
1da177e4 LT |
394 | struct ip_vs_service *svc; |
395 | ||
396 | /* Check for fwmark addressed entries */ | |
fc723250 | 397 | hash = ip_vs_svc_fwm_hashkey(net, fwmark); |
1da177e4 LT |
398 | |
399 | list_for_each_entry(svc, &ip_vs_svc_fwm_table[hash], f_list) { | |
fc723250 HS |
400 | if (svc->fwmark == fwmark && svc->af == af |
401 | && net_eq(svc->net, net)) { | |
1da177e4 | 402 | /* HIT */ |
1da177e4 LT |
403 | return svc; |
404 | } | |
405 | } | |
406 | ||
407 | return NULL; | |
408 | } | |
409 | ||
410 | struct ip_vs_service * | |
fc723250 | 411 | ip_vs_service_get(struct net *net, int af, __u32 fwmark, __u16 protocol, |
3c2e0505 | 412 | const union nf_inet_addr *vaddr, __be16 vport) |
1da177e4 LT |
413 | { |
414 | struct ip_vs_service *svc; | |
763f8d0e | 415 | struct netns_ipvs *ipvs = net_ipvs(net); |
3c2e0505 | 416 | |
1da177e4 LT |
417 | read_lock(&__ip_vs_svc_lock); |
418 | ||
419 | /* | |
420 | * Check the table hashed by fwmark first | |
421 | */ | |
097fc76a JA |
422 | if (fwmark) { |
423 | svc = __ip_vs_svc_fwm_find(net, af, fwmark); | |
424 | if (svc) | |
425 | goto out; | |
426 | } | |
1da177e4 LT |
427 | |
428 | /* | |
429 | * Check the table hashed by <protocol,addr,port> | |
430 | * for "full" addressed entries | |
431 | */ | |
fc723250 | 432 | svc = __ip_vs_service_find(net, af, protocol, vaddr, vport); |
1da177e4 LT |
433 | |
434 | if (svc == NULL | |
435 | && protocol == IPPROTO_TCP | |
763f8d0e | 436 | && atomic_read(&ipvs->ftpsvc_counter) |
1da177e4 LT |
437 | && (vport == FTPDATA || ntohs(vport) >= PROT_SOCK)) { |
438 | /* | |
439 | * Check if ftp service entry exists, the packet | |
440 | * might belong to FTP data connections. | |
441 | */ | |
fc723250 | 442 | svc = __ip_vs_service_find(net, af, protocol, vaddr, FTPPORT); |
1da177e4 LT |
443 | } |
444 | ||
445 | if (svc == NULL | |
763f8d0e | 446 | && atomic_read(&ipvs->nullsvc_counter)) { |
1da177e4 LT |
447 | /* |
448 | * Check if the catch-all port (port zero) exists | |
449 | */ | |
fc723250 | 450 | svc = __ip_vs_service_find(net, af, protocol, vaddr, 0); |
1da177e4 LT |
451 | } |
452 | ||
453 | out: | |
26c15cfd JA |
454 | if (svc) |
455 | atomic_inc(&svc->usecnt); | |
1da177e4 LT |
456 | read_unlock(&__ip_vs_svc_lock); |
457 | ||
3c2e0505 JV |
458 | IP_VS_DBG_BUF(9, "lookup service: fwm %u %s %s:%u %s\n", |
459 | fwmark, ip_vs_proto_name(protocol), | |
460 | IP_VS_DBG_ADDR(af, vaddr), ntohs(vport), | |
461 | svc ? "hit" : "not hit"); | |
1da177e4 LT |
462 | |
463 | return svc; | |
464 | } | |
465 | ||
466 | ||
467 | static inline void | |
468 | __ip_vs_bind_svc(struct ip_vs_dest *dest, struct ip_vs_service *svc) | |
469 | { | |
470 | atomic_inc(&svc->refcnt); | |
471 | dest->svc = svc; | |
472 | } | |
473 | ||
26c15cfd | 474 | static void |
1da177e4 LT |
475 | __ip_vs_unbind_svc(struct ip_vs_dest *dest) |
476 | { | |
477 | struct ip_vs_service *svc = dest->svc; | |
478 | ||
479 | dest->svc = NULL; | |
26c15cfd JA |
480 | if (atomic_dec_and_test(&svc->refcnt)) { |
481 | IP_VS_DBG_BUF(3, "Removing service %u/%s:%u usecnt=%d\n", | |
482 | svc->fwmark, | |
483 | IP_VS_DBG_ADDR(svc->af, &svc->addr), | |
484 | ntohs(svc->port), atomic_read(&svc->usecnt)); | |
b17fc996 | 485 | free_percpu(svc->stats.cpustats); |
1da177e4 | 486 | kfree(svc); |
26c15cfd | 487 | } |
1da177e4 LT |
488 | } |
489 | ||
490 | ||
491 | /* | |
492 | * Returns hash value for real service | |
493 | */ | |
95c96174 | 494 | static inline unsigned int ip_vs_rs_hashkey(int af, |
7937df15 JV |
495 | const union nf_inet_addr *addr, |
496 | __be16 port) | |
1da177e4 | 497 | { |
95c96174 | 498 | register unsigned int porth = ntohs(port); |
7937df15 JV |
499 | __be32 addr_fold = addr->ip; |
500 | ||
501 | #ifdef CONFIG_IP_VS_IPV6 | |
502 | if (af == AF_INET6) | |
503 | addr_fold = addr->ip6[0]^addr->ip6[1]^ | |
504 | addr->ip6[2]^addr->ip6[3]; | |
505 | #endif | |
1da177e4 | 506 | |
7937df15 | 507 | return (ntohl(addr_fold)^(porth>>IP_VS_RTAB_BITS)^porth) |
1da177e4 LT |
508 | & IP_VS_RTAB_MASK; |
509 | } | |
510 | ||
511 | /* | |
fc723250 | 512 | * Hashes ip_vs_dest in rs_table by <proto,addr,port>. |
1da177e4 LT |
513 | * should be called with locked tables. |
514 | */ | |
fc723250 | 515 | static int ip_vs_rs_hash(struct netns_ipvs *ipvs, struct ip_vs_dest *dest) |
1da177e4 | 516 | { |
95c96174 | 517 | unsigned int hash; |
1da177e4 LT |
518 | |
519 | if (!list_empty(&dest->d_list)) { | |
520 | return 0; | |
521 | } | |
522 | ||
523 | /* | |
524 | * Hash by proto,addr,port, | |
525 | * which are the parameters of the real service. | |
526 | */ | |
7937df15 JV |
527 | hash = ip_vs_rs_hashkey(dest->af, &dest->addr, dest->port); |
528 | ||
fc723250 | 529 | list_add(&dest->d_list, &ipvs->rs_table[hash]); |
1da177e4 LT |
530 | |
531 | return 1; | |
532 | } | |
533 | ||
534 | /* | |
fc723250 | 535 | * UNhashes ip_vs_dest from rs_table. |
1da177e4 LT |
536 | * should be called with locked tables. |
537 | */ | |
538 | static int ip_vs_rs_unhash(struct ip_vs_dest *dest) | |
539 | { | |
540 | /* | |
fc723250 | 541 | * Remove it from the rs_table table. |
1da177e4 LT |
542 | */ |
543 | if (!list_empty(&dest->d_list)) { | |
0edd9488 | 544 | list_del_init(&dest->d_list); |
1da177e4 LT |
545 | } |
546 | ||
547 | return 1; | |
548 | } | |
549 | ||
550 | /* | |
551 | * Lookup real service by <proto,addr,port> in the real service table. | |
552 | */ | |
553 | struct ip_vs_dest * | |
fc723250 | 554 | ip_vs_lookup_real_service(struct net *net, int af, __u16 protocol, |
7937df15 JV |
555 | const union nf_inet_addr *daddr, |
556 | __be16 dport) | |
1da177e4 | 557 | { |
fc723250 | 558 | struct netns_ipvs *ipvs = net_ipvs(net); |
95c96174 | 559 | unsigned int hash; |
1da177e4 LT |
560 | struct ip_vs_dest *dest; |
561 | ||
562 | /* | |
563 | * Check for "full" addressed entries | |
564 | * Return the first found entry | |
565 | */ | |
7937df15 | 566 | hash = ip_vs_rs_hashkey(af, daddr, dport); |
1da177e4 | 567 | |
a0840e2e | 568 | read_lock(&ipvs->rs_lock); |
fc723250 | 569 | list_for_each_entry(dest, &ipvs->rs_table[hash], d_list) { |
7937df15 JV |
570 | if ((dest->af == af) |
571 | && ip_vs_addr_equal(af, &dest->addr, daddr) | |
1da177e4 LT |
572 | && (dest->port == dport) |
573 | && ((dest->protocol == protocol) || | |
574 | dest->vfwmark)) { | |
575 | /* HIT */ | |
a0840e2e | 576 | read_unlock(&ipvs->rs_lock); |
1da177e4 LT |
577 | return dest; |
578 | } | |
579 | } | |
a0840e2e | 580 | read_unlock(&ipvs->rs_lock); |
1da177e4 LT |
581 | |
582 | return NULL; | |
583 | } | |
584 | ||
585 | /* | |
586 | * Lookup destination by {addr,port} in the given service | |
587 | */ | |
588 | static struct ip_vs_dest * | |
7937df15 JV |
589 | ip_vs_lookup_dest(struct ip_vs_service *svc, const union nf_inet_addr *daddr, |
590 | __be16 dport) | |
1da177e4 LT |
591 | { |
592 | struct ip_vs_dest *dest; | |
593 | ||
594 | /* | |
595 | * Find the destination for the given service | |
596 | */ | |
597 | list_for_each_entry(dest, &svc->destinations, n_list) { | |
7937df15 JV |
598 | if ((dest->af == svc->af) |
599 | && ip_vs_addr_equal(svc->af, &dest->addr, daddr) | |
600 | && (dest->port == dport)) { | |
1da177e4 LT |
601 | /* HIT */ |
602 | return dest; | |
603 | } | |
604 | } | |
605 | ||
606 | return NULL; | |
607 | } | |
608 | ||
1e356f9c RB |
609 | /* |
610 | * Find destination by {daddr,dport,vaddr,protocol} | |
611 | * Cretaed to be used in ip_vs_process_message() in | |
612 | * the backup synchronization daemon. It finds the | |
613 | * destination to be bound to the received connection | |
614 | * on the backup. | |
615 | * | |
616 | * ip_vs_lookup_real_service() looked promissing, but | |
617 | * seems not working as expected. | |
618 | */ | |
fc723250 HS |
619 | struct ip_vs_dest *ip_vs_find_dest(struct net *net, int af, |
620 | const union nf_inet_addr *daddr, | |
7937df15 JV |
621 | __be16 dport, |
622 | const union nf_inet_addr *vaddr, | |
52793dbe JA |
623 | __be16 vport, __u16 protocol, __u32 fwmark, |
624 | __u32 flags) | |
1e356f9c RB |
625 | { |
626 | struct ip_vs_dest *dest; | |
627 | struct ip_vs_service *svc; | |
52793dbe | 628 | __be16 port = dport; |
1e356f9c | 629 | |
fc723250 | 630 | svc = ip_vs_service_get(net, af, fwmark, protocol, vaddr, vport); |
1e356f9c RB |
631 | if (!svc) |
632 | return NULL; | |
52793dbe JA |
633 | if (fwmark && (flags & IP_VS_CONN_F_FWD_MASK) != IP_VS_CONN_F_MASQ) |
634 | port = 0; | |
635 | dest = ip_vs_lookup_dest(svc, daddr, port); | |
636 | if (!dest) | |
637 | dest = ip_vs_lookup_dest(svc, daddr, port ^ dport); | |
1e356f9c RB |
638 | if (dest) |
639 | atomic_inc(&dest->refcnt); | |
640 | ip_vs_service_put(svc); | |
641 | return dest; | |
642 | } | |
1da177e4 LT |
643 | |
644 | /* | |
645 | * Lookup dest by {svc,addr,port} in the destination trash. | |
646 | * The destination trash is used to hold the destinations that are removed | |
647 | * from the service table but are still referenced by some conn entries. | |
648 | * The reason to add the destination trash is when the dest is temporary | |
649 | * down (either by administrator or by monitor program), the dest can be | |
650 | * picked back from the trash, the remaining connections to the dest can | |
651 | * continue, and the counting information of the dest is also useful for | |
652 | * scheduling. | |
653 | */ | |
654 | static struct ip_vs_dest * | |
7937df15 JV |
655 | ip_vs_trash_get_dest(struct ip_vs_service *svc, const union nf_inet_addr *daddr, |
656 | __be16 dport) | |
1da177e4 LT |
657 | { |
658 | struct ip_vs_dest *dest, *nxt; | |
f2431e6e | 659 | struct netns_ipvs *ipvs = net_ipvs(svc->net); |
1da177e4 LT |
660 | |
661 | /* | |
662 | * Find the destination in trash | |
663 | */ | |
f2431e6e | 664 | list_for_each_entry_safe(dest, nxt, &ipvs->dest_trash, n_list) { |
7937df15 JV |
665 | IP_VS_DBG_BUF(3, "Destination %u/%s:%u still in trash, " |
666 | "dest->refcnt=%d\n", | |
667 | dest->vfwmark, | |
668 | IP_VS_DBG_ADDR(svc->af, &dest->addr), | |
669 | ntohs(dest->port), | |
670 | atomic_read(&dest->refcnt)); | |
671 | if (dest->af == svc->af && | |
672 | ip_vs_addr_equal(svc->af, &dest->addr, daddr) && | |
1da177e4 LT |
673 | dest->port == dport && |
674 | dest->vfwmark == svc->fwmark && | |
675 | dest->protocol == svc->protocol && | |
676 | (svc->fwmark || | |
7937df15 | 677 | (ip_vs_addr_equal(svc->af, &dest->vaddr, &svc->addr) && |
1da177e4 LT |
678 | dest->vport == svc->port))) { |
679 | /* HIT */ | |
680 | return dest; | |
681 | } | |
682 | ||
683 | /* | |
684 | * Try to purge the destination from trash if not referenced | |
685 | */ | |
686 | if (atomic_read(&dest->refcnt) == 1) { | |
7937df15 JV |
687 | IP_VS_DBG_BUF(3, "Removing destination %u/%s:%u " |
688 | "from trash\n", | |
689 | dest->vfwmark, | |
690 | IP_VS_DBG_ADDR(svc->af, &dest->addr), | |
691 | ntohs(dest->port)); | |
1da177e4 LT |
692 | list_del(&dest->n_list); |
693 | ip_vs_dst_reset(dest); | |
694 | __ip_vs_unbind_svc(dest); | |
b17fc996 | 695 | free_percpu(dest->stats.cpustats); |
1da177e4 LT |
696 | kfree(dest); |
697 | } | |
698 | } | |
699 | ||
700 | return NULL; | |
701 | } | |
702 | ||
703 | ||
704 | /* | |
705 | * Clean up all the destinations in the trash | |
706 | * Called by the ip_vs_control_cleanup() | |
707 | * | |
708 | * When the ip_vs_control_clearup is activated by ipvs module exit, | |
709 | * the service tables must have been flushed and all the connections | |
710 | * are expired, and the refcnt of each destination in the trash must | |
711 | * be 1, so we simply release them here. | |
712 | */ | |
f2431e6e | 713 | static void ip_vs_trash_cleanup(struct net *net) |
1da177e4 LT |
714 | { |
715 | struct ip_vs_dest *dest, *nxt; | |
f2431e6e | 716 | struct netns_ipvs *ipvs = net_ipvs(net); |
1da177e4 | 717 | |
f2431e6e | 718 | list_for_each_entry_safe(dest, nxt, &ipvs->dest_trash, n_list) { |
1da177e4 LT |
719 | list_del(&dest->n_list); |
720 | ip_vs_dst_reset(dest); | |
721 | __ip_vs_unbind_svc(dest); | |
b17fc996 | 722 | free_percpu(dest->stats.cpustats); |
1da177e4 LT |
723 | kfree(dest); |
724 | } | |
725 | } | |
726 | ||
55a3d4e1 JA |
727 | static void |
728 | ip_vs_copy_stats(struct ip_vs_stats_user *dst, struct ip_vs_stats *src) | |
729 | { | |
730 | #define IP_VS_SHOW_STATS_COUNTER(c) dst->c = src->ustats.c - src->ustats0.c | |
55a3d4e1 JA |
731 | |
732 | spin_lock_bh(&src->lock); | |
733 | ||
734 | IP_VS_SHOW_STATS_COUNTER(conns); | |
735 | IP_VS_SHOW_STATS_COUNTER(inpkts); | |
736 | IP_VS_SHOW_STATS_COUNTER(outpkts); | |
737 | IP_VS_SHOW_STATS_COUNTER(inbytes); | |
738 | IP_VS_SHOW_STATS_COUNTER(outbytes); | |
739 | ||
ea9f22cc | 740 | ip_vs_read_estimator(dst, src); |
55a3d4e1 JA |
741 | |
742 | spin_unlock_bh(&src->lock); | |
743 | } | |
1da177e4 LT |
744 | |
745 | static void | |
746 | ip_vs_zero_stats(struct ip_vs_stats *stats) | |
747 | { | |
748 | spin_lock_bh(&stats->lock); | |
e93615d0 | 749 | |
55a3d4e1 JA |
750 | /* get current counters as zero point, rates are zeroed */ |
751 | ||
752 | #define IP_VS_ZERO_STATS_COUNTER(c) stats->ustats0.c = stats->ustats.c | |
55a3d4e1 JA |
753 | |
754 | IP_VS_ZERO_STATS_COUNTER(conns); | |
755 | IP_VS_ZERO_STATS_COUNTER(inpkts); | |
756 | IP_VS_ZERO_STATS_COUNTER(outpkts); | |
757 | IP_VS_ZERO_STATS_COUNTER(inbytes); | |
758 | IP_VS_ZERO_STATS_COUNTER(outbytes); | |
759 | ||
1da177e4 | 760 | ip_vs_zero_estimator(stats); |
e93615d0 | 761 | |
3a14a313 | 762 | spin_unlock_bh(&stats->lock); |
1da177e4 LT |
763 | } |
764 | ||
765 | /* | |
766 | * Update a destination in the given service | |
767 | */ | |
768 | static void | |
26c15cfd JA |
769 | __ip_vs_update_dest(struct ip_vs_service *svc, struct ip_vs_dest *dest, |
770 | struct ip_vs_dest_user_kern *udest, int add) | |
1da177e4 | 771 | { |
fc723250 | 772 | struct netns_ipvs *ipvs = net_ipvs(svc->net); |
1da177e4 LT |
773 | int conn_flags; |
774 | ||
775 | /* set the weight and the flags */ | |
776 | atomic_set(&dest->weight, udest->weight); | |
3575792e JA |
777 | conn_flags = udest->conn_flags & IP_VS_CONN_F_DEST_MASK; |
778 | conn_flags |= IP_VS_CONN_F_INACTIVE; | |
1da177e4 | 779 | |
1da177e4 | 780 | /* set the IP_VS_CONN_F_NOOUTPUT flag if not masquerading/NAT */ |
3575792e | 781 | if ((conn_flags & IP_VS_CONN_F_FWD_MASK) != IP_VS_CONN_F_MASQ) { |
1da177e4 LT |
782 | conn_flags |= IP_VS_CONN_F_NOOUTPUT; |
783 | } else { | |
784 | /* | |
fc723250 | 785 | * Put the real service in rs_table if not present. |
1da177e4 LT |
786 | * For now only for NAT! |
787 | */ | |
a0840e2e | 788 | write_lock_bh(&ipvs->rs_lock); |
fc723250 | 789 | ip_vs_rs_hash(ipvs, dest); |
a0840e2e | 790 | write_unlock_bh(&ipvs->rs_lock); |
1da177e4 LT |
791 | } |
792 | atomic_set(&dest->conn_flags, conn_flags); | |
793 | ||
794 | /* bind the service */ | |
795 | if (!dest->svc) { | |
796 | __ip_vs_bind_svc(dest, svc); | |
797 | } else { | |
798 | if (dest->svc != svc) { | |
799 | __ip_vs_unbind_svc(dest); | |
800 | ip_vs_zero_stats(&dest->stats); | |
801 | __ip_vs_bind_svc(dest, svc); | |
802 | } | |
803 | } | |
804 | ||
805 | /* set the dest status flags */ | |
806 | dest->flags |= IP_VS_DEST_F_AVAILABLE; | |
807 | ||
808 | if (udest->u_threshold == 0 || udest->u_threshold > dest->u_threshold) | |
809 | dest->flags &= ~IP_VS_DEST_F_OVERLOAD; | |
810 | dest->u_threshold = udest->u_threshold; | |
811 | dest->l_threshold = udest->l_threshold; | |
26c15cfd | 812 | |
ff75f40f | 813 | spin_lock_bh(&dest->dst_lock); |
fc604767 | 814 | ip_vs_dst_reset(dest); |
ff75f40f | 815 | spin_unlock_bh(&dest->dst_lock); |
fc604767 | 816 | |
26c15cfd | 817 | if (add) |
6ef757f9 | 818 | ip_vs_start_estimator(svc->net, &dest->stats); |
26c15cfd JA |
819 | |
820 | write_lock_bh(&__ip_vs_svc_lock); | |
821 | ||
822 | /* Wait until all other svc users go away */ | |
823 | IP_VS_WAIT_WHILE(atomic_read(&svc->usecnt) > 0); | |
824 | ||
825 | if (add) { | |
826 | list_add(&dest->n_list, &svc->destinations); | |
827 | svc->num_dests++; | |
828 | } | |
829 | ||
830 | /* call the update_service, because server weight may be changed */ | |
831 | if (svc->scheduler->update_service) | |
832 | svc->scheduler->update_service(svc); | |
833 | ||
834 | write_unlock_bh(&__ip_vs_svc_lock); | |
1da177e4 LT |
835 | } |
836 | ||
837 | ||
838 | /* | |
839 | * Create a destination for the given service | |
840 | */ | |
841 | static int | |
c860c6b1 | 842 | ip_vs_new_dest(struct ip_vs_service *svc, struct ip_vs_dest_user_kern *udest, |
1da177e4 LT |
843 | struct ip_vs_dest **dest_p) |
844 | { | |
845 | struct ip_vs_dest *dest; | |
95c96174 | 846 | unsigned int atype; |
1da177e4 LT |
847 | |
848 | EnterFunction(2); | |
849 | ||
09571c7a VB |
850 | #ifdef CONFIG_IP_VS_IPV6 |
851 | if (svc->af == AF_INET6) { | |
852 | atype = ipv6_addr_type(&udest->addr.in6); | |
3bfb92f4 SW |
853 | if ((!(atype & IPV6_ADDR_UNICAST) || |
854 | atype & IPV6_ADDR_LINKLOCAL) && | |
4a98480b | 855 | !__ip_vs_addr_is_local_v6(svc->net, &udest->addr.in6)) |
09571c7a VB |
856 | return -EINVAL; |
857 | } else | |
858 | #endif | |
859 | { | |
4a98480b | 860 | atype = inet_addr_type(svc->net, udest->addr.ip); |
09571c7a VB |
861 | if (atype != RTN_LOCAL && atype != RTN_UNICAST) |
862 | return -EINVAL; | |
863 | } | |
1da177e4 | 864 | |
dee06e47 | 865 | dest = kzalloc(sizeof(struct ip_vs_dest), GFP_KERNEL); |
0a9ee813 | 866 | if (dest == NULL) |
1da177e4 | 867 | return -ENOMEM; |
0a9ee813 | 868 | |
b17fc996 | 869 | dest->stats.cpustats = alloc_percpu(struct ip_vs_cpu_stats); |
0a9ee813 | 870 | if (!dest->stats.cpustats) |
b17fc996 | 871 | goto err_alloc; |
1da177e4 | 872 | |
c860c6b1 | 873 | dest->af = svc->af; |
1da177e4 | 874 | dest->protocol = svc->protocol; |
c860c6b1 | 875 | dest->vaddr = svc->addr; |
1da177e4 LT |
876 | dest->vport = svc->port; |
877 | dest->vfwmark = svc->fwmark; | |
c860c6b1 | 878 | ip_vs_addr_copy(svc->af, &dest->addr, &udest->addr); |
1da177e4 LT |
879 | dest->port = udest->port; |
880 | ||
881 | atomic_set(&dest->activeconns, 0); | |
882 | atomic_set(&dest->inactconns, 0); | |
883 | atomic_set(&dest->persistconns, 0); | |
26c15cfd | 884 | atomic_set(&dest->refcnt, 1); |
1da177e4 LT |
885 | |
886 | INIT_LIST_HEAD(&dest->d_list); | |
887 | spin_lock_init(&dest->dst_lock); | |
888 | spin_lock_init(&dest->stats.lock); | |
26c15cfd | 889 | __ip_vs_update_dest(svc, dest, udest, 1); |
1da177e4 LT |
890 | |
891 | *dest_p = dest; | |
892 | ||
893 | LeaveFunction(2); | |
894 | return 0; | |
b17fc996 HS |
895 | |
896 | err_alloc: | |
897 | kfree(dest); | |
898 | return -ENOMEM; | |
1da177e4 LT |
899 | } |
900 | ||
901 | ||
902 | /* | |
903 | * Add a destination into an existing service | |
904 | */ | |
905 | static int | |
c860c6b1 | 906 | ip_vs_add_dest(struct ip_vs_service *svc, struct ip_vs_dest_user_kern *udest) |
1da177e4 LT |
907 | { |
908 | struct ip_vs_dest *dest; | |
c860c6b1 | 909 | union nf_inet_addr daddr; |
014d730d | 910 | __be16 dport = udest->port; |
1da177e4 LT |
911 | int ret; |
912 | ||
913 | EnterFunction(2); | |
914 | ||
915 | if (udest->weight < 0) { | |
1e3e238e | 916 | pr_err("%s(): server weight less than zero\n", __func__); |
1da177e4 LT |
917 | return -ERANGE; |
918 | } | |
919 | ||
920 | if (udest->l_threshold > udest->u_threshold) { | |
1e3e238e HE |
921 | pr_err("%s(): lower threshold is higher than upper threshold\n", |
922 | __func__); | |
1da177e4 LT |
923 | return -ERANGE; |
924 | } | |
925 | ||
c860c6b1 JV |
926 | ip_vs_addr_copy(svc->af, &daddr, &udest->addr); |
927 | ||
1da177e4 LT |
928 | /* |
929 | * Check if the dest already exists in the list | |
930 | */ | |
7937df15 JV |
931 | dest = ip_vs_lookup_dest(svc, &daddr, dport); |
932 | ||
1da177e4 | 933 | if (dest != NULL) { |
1e3e238e | 934 | IP_VS_DBG(1, "%s(): dest already exists\n", __func__); |
1da177e4 LT |
935 | return -EEXIST; |
936 | } | |
937 | ||
938 | /* | |
939 | * Check if the dest already exists in the trash and | |
940 | * is from the same service | |
941 | */ | |
7937df15 JV |
942 | dest = ip_vs_trash_get_dest(svc, &daddr, dport); |
943 | ||
1da177e4 | 944 | if (dest != NULL) { |
cfc78c5a JV |
945 | IP_VS_DBG_BUF(3, "Get destination %s:%u from trash, " |
946 | "dest->refcnt=%d, service %u/%s:%u\n", | |
947 | IP_VS_DBG_ADDR(svc->af, &daddr), ntohs(dport), | |
948 | atomic_read(&dest->refcnt), | |
949 | dest->vfwmark, | |
950 | IP_VS_DBG_ADDR(svc->af, &dest->vaddr), | |
951 | ntohs(dest->vport)); | |
952 | ||
1da177e4 LT |
953 | /* |
954 | * Get the destination from the trash | |
955 | */ | |
956 | list_del(&dest->n_list); | |
957 | ||
26c15cfd JA |
958 | __ip_vs_update_dest(svc, dest, udest, 1); |
959 | ret = 0; | |
960 | } else { | |
1da177e4 | 961 | /* |
26c15cfd | 962 | * Allocate and initialize the dest structure |
1da177e4 | 963 | */ |
26c15cfd | 964 | ret = ip_vs_new_dest(svc, udest, &dest); |
1da177e4 | 965 | } |
1da177e4 LT |
966 | LeaveFunction(2); |
967 | ||
26c15cfd | 968 | return ret; |
1da177e4 LT |
969 | } |
970 | ||
971 | ||
972 | /* | |
973 | * Edit a destination in the given service | |
974 | */ | |
975 | static int | |
c860c6b1 | 976 | ip_vs_edit_dest(struct ip_vs_service *svc, struct ip_vs_dest_user_kern *udest) |
1da177e4 LT |
977 | { |
978 | struct ip_vs_dest *dest; | |
c860c6b1 | 979 | union nf_inet_addr daddr; |
014d730d | 980 | __be16 dport = udest->port; |
1da177e4 LT |
981 | |
982 | EnterFunction(2); | |
983 | ||
984 | if (udest->weight < 0) { | |
1e3e238e | 985 | pr_err("%s(): server weight less than zero\n", __func__); |
1da177e4 LT |
986 | return -ERANGE; |
987 | } | |
988 | ||
989 | if (udest->l_threshold > udest->u_threshold) { | |
1e3e238e HE |
990 | pr_err("%s(): lower threshold is higher than upper threshold\n", |
991 | __func__); | |
1da177e4 LT |
992 | return -ERANGE; |
993 | } | |
994 | ||
c860c6b1 JV |
995 | ip_vs_addr_copy(svc->af, &daddr, &udest->addr); |
996 | ||
1da177e4 LT |
997 | /* |
998 | * Lookup the destination list | |
999 | */ | |
7937df15 JV |
1000 | dest = ip_vs_lookup_dest(svc, &daddr, dport); |
1001 | ||
1da177e4 | 1002 | if (dest == NULL) { |
1e3e238e | 1003 | IP_VS_DBG(1, "%s(): dest doesn't exist\n", __func__); |
1da177e4 LT |
1004 | return -ENOENT; |
1005 | } | |
1006 | ||
26c15cfd | 1007 | __ip_vs_update_dest(svc, dest, udest, 0); |
1da177e4 LT |
1008 | LeaveFunction(2); |
1009 | ||
1010 | return 0; | |
1011 | } | |
1012 | ||
1013 | ||
1014 | /* | |
1015 | * Delete a destination (must be already unlinked from the service) | |
1016 | */ | |
29c2026f | 1017 | static void __ip_vs_del_dest(struct net *net, struct ip_vs_dest *dest) |
1da177e4 | 1018 | { |
a0840e2e HS |
1019 | struct netns_ipvs *ipvs = net_ipvs(net); |
1020 | ||
6ef757f9 | 1021 | ip_vs_stop_estimator(net, &dest->stats); |
1da177e4 LT |
1022 | |
1023 | /* | |
1024 | * Remove it from the d-linked list with the real services. | |
1025 | */ | |
a0840e2e | 1026 | write_lock_bh(&ipvs->rs_lock); |
1da177e4 | 1027 | ip_vs_rs_unhash(dest); |
a0840e2e | 1028 | write_unlock_bh(&ipvs->rs_lock); |
1da177e4 LT |
1029 | |
1030 | /* | |
1031 | * Decrease the refcnt of the dest, and free the dest | |
1032 | * if nobody refers to it (refcnt=0). Otherwise, throw | |
1033 | * the destination into the trash. | |
1034 | */ | |
1035 | if (atomic_dec_and_test(&dest->refcnt)) { | |
26c15cfd JA |
1036 | IP_VS_DBG_BUF(3, "Removing destination %u/%s:%u\n", |
1037 | dest->vfwmark, | |
1038 | IP_VS_DBG_ADDR(dest->af, &dest->addr), | |
1039 | ntohs(dest->port)); | |
1da177e4 LT |
1040 | ip_vs_dst_reset(dest); |
1041 | /* simply decrease svc->refcnt here, let the caller check | |
1042 | and release the service if nobody refers to it. | |
1043 | Only user context can release destination and service, | |
1044 | and only one user context can update virtual service at a | |
1045 | time, so the operation here is OK */ | |
1046 | atomic_dec(&dest->svc->refcnt); | |
b17fc996 | 1047 | free_percpu(dest->stats.cpustats); |
1da177e4 LT |
1048 | kfree(dest); |
1049 | } else { | |
cfc78c5a JV |
1050 | IP_VS_DBG_BUF(3, "Moving dest %s:%u into trash, " |
1051 | "dest->refcnt=%d\n", | |
1052 | IP_VS_DBG_ADDR(dest->af, &dest->addr), | |
1053 | ntohs(dest->port), | |
1054 | atomic_read(&dest->refcnt)); | |
f2431e6e | 1055 | list_add(&dest->n_list, &ipvs->dest_trash); |
1da177e4 LT |
1056 | atomic_inc(&dest->refcnt); |
1057 | } | |
1058 | } | |
1059 | ||
1060 | ||
1061 | /* | |
1062 | * Unlink a destination from the given service | |
1063 | */ | |
1064 | static void __ip_vs_unlink_dest(struct ip_vs_service *svc, | |
1065 | struct ip_vs_dest *dest, | |
1066 | int svcupd) | |
1067 | { | |
1068 | dest->flags &= ~IP_VS_DEST_F_AVAILABLE; | |
1069 | ||
1070 | /* | |
1071 | * Remove it from the d-linked destination list. | |
1072 | */ | |
1073 | list_del(&dest->n_list); | |
1074 | svc->num_dests--; | |
82dfb6f3 SW |
1075 | |
1076 | /* | |
1077 | * Call the update_service function of its scheduler | |
1078 | */ | |
1079 | if (svcupd && svc->scheduler->update_service) | |
1080 | svc->scheduler->update_service(svc); | |
1da177e4 LT |
1081 | } |
1082 | ||
1083 | ||
1084 | /* | |
1085 | * Delete a destination server in the given service | |
1086 | */ | |
1087 | static int | |
c860c6b1 | 1088 | ip_vs_del_dest(struct ip_vs_service *svc, struct ip_vs_dest_user_kern *udest) |
1da177e4 LT |
1089 | { |
1090 | struct ip_vs_dest *dest; | |
014d730d | 1091 | __be16 dport = udest->port; |
1da177e4 LT |
1092 | |
1093 | EnterFunction(2); | |
1094 | ||
7937df15 | 1095 | dest = ip_vs_lookup_dest(svc, &udest->addr, dport); |
c860c6b1 | 1096 | |
1da177e4 | 1097 | if (dest == NULL) { |
1e3e238e | 1098 | IP_VS_DBG(1, "%s(): destination not found!\n", __func__); |
1da177e4 LT |
1099 | return -ENOENT; |
1100 | } | |
1101 | ||
1102 | write_lock_bh(&__ip_vs_svc_lock); | |
1103 | ||
1104 | /* | |
1105 | * Wait until all other svc users go away. | |
1106 | */ | |
26c15cfd | 1107 | IP_VS_WAIT_WHILE(atomic_read(&svc->usecnt) > 0); |
1da177e4 LT |
1108 | |
1109 | /* | |
1110 | * Unlink dest from the service | |
1111 | */ | |
1112 | __ip_vs_unlink_dest(svc, dest, 1); | |
1113 | ||
1114 | write_unlock_bh(&__ip_vs_svc_lock); | |
1115 | ||
1116 | /* | |
1117 | * Delete the destination | |
1118 | */ | |
a0840e2e | 1119 | __ip_vs_del_dest(svc->net, dest); |
1da177e4 LT |
1120 | |
1121 | LeaveFunction(2); | |
1122 | ||
1123 | return 0; | |
1124 | } | |
1125 | ||
1126 | ||
1127 | /* | |
1128 | * Add a service into the service hash table | |
1129 | */ | |
1130 | static int | |
fc723250 | 1131 | ip_vs_add_service(struct net *net, struct ip_vs_service_user_kern *u, |
c860c6b1 | 1132 | struct ip_vs_service **svc_p) |
1da177e4 LT |
1133 | { |
1134 | int ret = 0; | |
1135 | struct ip_vs_scheduler *sched = NULL; | |
0d1e71b0 | 1136 | struct ip_vs_pe *pe = NULL; |
1da177e4 | 1137 | struct ip_vs_service *svc = NULL; |
a0840e2e | 1138 | struct netns_ipvs *ipvs = net_ipvs(net); |
1da177e4 LT |
1139 | |
1140 | /* increase the module use count */ | |
1141 | ip_vs_use_count_inc(); | |
1142 | ||
1143 | /* Lookup the scheduler by 'u->sched_name' */ | |
1144 | sched = ip_vs_scheduler_get(u->sched_name); | |
1145 | if (sched == NULL) { | |
1e3e238e | 1146 | pr_info("Scheduler module ip_vs_%s not found\n", u->sched_name); |
1da177e4 | 1147 | ret = -ENOENT; |
6e08bfb8 | 1148 | goto out_err; |
1da177e4 LT |
1149 | } |
1150 | ||
0d1e71b0 | 1151 | if (u->pe_name && *u->pe_name) { |
e9e5eee8 | 1152 | pe = ip_vs_pe_getbyname(u->pe_name); |
0d1e71b0 SH |
1153 | if (pe == NULL) { |
1154 | pr_info("persistence engine module ip_vs_pe_%s " | |
1155 | "not found\n", u->pe_name); | |
1156 | ret = -ENOENT; | |
1157 | goto out_err; | |
1158 | } | |
1159 | } | |
1160 | ||
f94fd041 | 1161 | #ifdef CONFIG_IP_VS_IPV6 |
48148938 JV |
1162 | if (u->af == AF_INET6 && (u->netmask < 1 || u->netmask > 128)) { |
1163 | ret = -EINVAL; | |
1164 | goto out_err; | |
f94fd041 JV |
1165 | } |
1166 | #endif | |
1167 | ||
dee06e47 | 1168 | svc = kzalloc(sizeof(struct ip_vs_service), GFP_KERNEL); |
1da177e4 | 1169 | if (svc == NULL) { |
1e3e238e | 1170 | IP_VS_DBG(1, "%s(): no memory\n", __func__); |
1da177e4 LT |
1171 | ret = -ENOMEM; |
1172 | goto out_err; | |
1173 | } | |
b17fc996 | 1174 | svc->stats.cpustats = alloc_percpu(struct ip_vs_cpu_stats); |
0a54e939 JL |
1175 | if (!svc->stats.cpustats) { |
1176 | ret = -ENOMEM; | |
b17fc996 | 1177 | goto out_err; |
0a54e939 | 1178 | } |
1da177e4 LT |
1179 | |
1180 | /* I'm the first user of the service */ | |
26c15cfd | 1181 | atomic_set(&svc->usecnt, 0); |
1da177e4 LT |
1182 | atomic_set(&svc->refcnt, 0); |
1183 | ||
c860c6b1 | 1184 | svc->af = u->af; |
1da177e4 | 1185 | svc->protocol = u->protocol; |
c860c6b1 | 1186 | ip_vs_addr_copy(svc->af, &svc->addr, &u->addr); |
1da177e4 LT |
1187 | svc->port = u->port; |
1188 | svc->fwmark = u->fwmark; | |
1189 | svc->flags = u->flags; | |
1190 | svc->timeout = u->timeout * HZ; | |
1191 | svc->netmask = u->netmask; | |
fc723250 | 1192 | svc->net = net; |
1da177e4 LT |
1193 | |
1194 | INIT_LIST_HEAD(&svc->destinations); | |
1195 | rwlock_init(&svc->sched_lock); | |
1196 | spin_lock_init(&svc->stats.lock); | |
1197 | ||
1198 | /* Bind the scheduler */ | |
1199 | ret = ip_vs_bind_scheduler(svc, sched); | |
1200 | if (ret) | |
1201 | goto out_err; | |
1202 | sched = NULL; | |
1203 | ||
0d1e71b0 SH |
1204 | /* Bind the ct retriever */ |
1205 | ip_vs_bind_pe(svc, pe); | |
1206 | pe = NULL; | |
1207 | ||
1da177e4 LT |
1208 | /* Update the virtual service counters */ |
1209 | if (svc->port == FTPPORT) | |
763f8d0e | 1210 | atomic_inc(&ipvs->ftpsvc_counter); |
1da177e4 | 1211 | else if (svc->port == 0) |
763f8d0e | 1212 | atomic_inc(&ipvs->nullsvc_counter); |
1da177e4 | 1213 | |
6ef757f9 | 1214 | ip_vs_start_estimator(net, &svc->stats); |
f94fd041 JV |
1215 | |
1216 | /* Count only IPv4 services for old get/setsockopt interface */ | |
1217 | if (svc->af == AF_INET) | |
a0840e2e | 1218 | ipvs->num_services++; |
1da177e4 LT |
1219 | |
1220 | /* Hash the service into the service table */ | |
1221 | write_lock_bh(&__ip_vs_svc_lock); | |
1222 | ip_vs_svc_hash(svc); | |
1223 | write_unlock_bh(&__ip_vs_svc_lock); | |
1224 | ||
1225 | *svc_p = svc; | |
7a4f0761 HS |
1226 | /* Now there is a service - full throttle */ |
1227 | ipvs->enable = 1; | |
1da177e4 LT |
1228 | return 0; |
1229 | ||
b17fc996 | 1230 | |
6e08bfb8 | 1231 | out_err: |
1da177e4 | 1232 | if (svc != NULL) { |
2fabf35b | 1233 | ip_vs_unbind_scheduler(svc); |
1da177e4 LT |
1234 | if (svc->inc) { |
1235 | local_bh_disable(); | |
1236 | ip_vs_app_inc_put(svc->inc); | |
1237 | local_bh_enable(); | |
1238 | } | |
b17fc996 HS |
1239 | if (svc->stats.cpustats) |
1240 | free_percpu(svc->stats.cpustats); | |
1da177e4 LT |
1241 | kfree(svc); |
1242 | } | |
1243 | ip_vs_scheduler_put(sched); | |
0d1e71b0 | 1244 | ip_vs_pe_put(pe); |
1da177e4 | 1245 | |
1da177e4 LT |
1246 | /* decrease the module use count */ |
1247 | ip_vs_use_count_dec(); | |
1248 | ||
1249 | return ret; | |
1250 | } | |
1251 | ||
1252 | ||
1253 | /* | |
1254 | * Edit a service and bind it with a new scheduler | |
1255 | */ | |
1256 | static int | |
c860c6b1 | 1257 | ip_vs_edit_service(struct ip_vs_service *svc, struct ip_vs_service_user_kern *u) |
1da177e4 LT |
1258 | { |
1259 | struct ip_vs_scheduler *sched, *old_sched; | |
0d1e71b0 | 1260 | struct ip_vs_pe *pe = NULL, *old_pe = NULL; |
1da177e4 LT |
1261 | int ret = 0; |
1262 | ||
1263 | /* | |
1264 | * Lookup the scheduler, by 'u->sched_name' | |
1265 | */ | |
1266 | sched = ip_vs_scheduler_get(u->sched_name); | |
1267 | if (sched == NULL) { | |
1e3e238e | 1268 | pr_info("Scheduler module ip_vs_%s not found\n", u->sched_name); |
1da177e4 LT |
1269 | return -ENOENT; |
1270 | } | |
1271 | old_sched = sched; | |
1272 | ||
0d1e71b0 | 1273 | if (u->pe_name && *u->pe_name) { |
e9e5eee8 | 1274 | pe = ip_vs_pe_getbyname(u->pe_name); |
0d1e71b0 SH |
1275 | if (pe == NULL) { |
1276 | pr_info("persistence engine module ip_vs_pe_%s " | |
1277 | "not found\n", u->pe_name); | |
1278 | ret = -ENOENT; | |
1279 | goto out; | |
1280 | } | |
1281 | old_pe = pe; | |
1282 | } | |
1283 | ||
f94fd041 | 1284 | #ifdef CONFIG_IP_VS_IPV6 |
48148938 JV |
1285 | if (u->af == AF_INET6 && (u->netmask < 1 || u->netmask > 128)) { |
1286 | ret = -EINVAL; | |
1287 | goto out; | |
f94fd041 JV |
1288 | } |
1289 | #endif | |
1290 | ||
1da177e4 LT |
1291 | write_lock_bh(&__ip_vs_svc_lock); |
1292 | ||
1293 | /* | |
1294 | * Wait until all other svc users go away. | |
1295 | */ | |
26c15cfd | 1296 | IP_VS_WAIT_WHILE(atomic_read(&svc->usecnt) > 0); |
1da177e4 LT |
1297 | |
1298 | /* | |
1299 | * Set the flags and timeout value | |
1300 | */ | |
1301 | svc->flags = u->flags | IP_VS_SVC_F_HASHED; | |
1302 | svc->timeout = u->timeout * HZ; | |
1303 | svc->netmask = u->netmask; | |
1304 | ||
1305 | old_sched = svc->scheduler; | |
1306 | if (sched != old_sched) { | |
1307 | /* | |
1308 | * Unbind the old scheduler | |
1309 | */ | |
1310 | if ((ret = ip_vs_unbind_scheduler(svc))) { | |
1311 | old_sched = sched; | |
9e691ed6 | 1312 | goto out_unlock; |
1da177e4 LT |
1313 | } |
1314 | ||
1315 | /* | |
1316 | * Bind the new scheduler | |
1317 | */ | |
1318 | if ((ret = ip_vs_bind_scheduler(svc, sched))) { | |
1319 | /* | |
1320 | * If ip_vs_bind_scheduler fails, restore the old | |
1321 | * scheduler. | |
1322 | * The main reason of failure is out of memory. | |
1323 | * | |
1324 | * The question is if the old scheduler can be | |
1325 | * restored all the time. TODO: if it cannot be | |
1326 | * restored some time, we must delete the service, | |
1327 | * otherwise the system may crash. | |
1328 | */ | |
1329 | ip_vs_bind_scheduler(svc, old_sched); | |
1330 | old_sched = sched; | |
9e691ed6 | 1331 | goto out_unlock; |
1da177e4 LT |
1332 | } |
1333 | } | |
1334 | ||
0d1e71b0 SH |
1335 | old_pe = svc->pe; |
1336 | if (pe != old_pe) { | |
1337 | ip_vs_unbind_pe(svc); | |
1338 | ip_vs_bind_pe(svc, pe); | |
1339 | } | |
1340 | ||
552ad65a | 1341 | out_unlock: |
1da177e4 | 1342 | write_unlock_bh(&__ip_vs_svc_lock); |
552ad65a | 1343 | out: |
6e08bfb8 | 1344 | ip_vs_scheduler_put(old_sched); |
0d1e71b0 | 1345 | ip_vs_pe_put(old_pe); |
1da177e4 LT |
1346 | return ret; |
1347 | } | |
1348 | ||
1349 | ||
1350 | /* | |
1351 | * Delete a service from the service list | |
1352 | * - The service must be unlinked, unlocked and not referenced! | |
1353 | * - We are called under _bh lock | |
1354 | */ | |
1355 | static void __ip_vs_del_service(struct ip_vs_service *svc) | |
1356 | { | |
1357 | struct ip_vs_dest *dest, *nxt; | |
1358 | struct ip_vs_scheduler *old_sched; | |
0d1e71b0 | 1359 | struct ip_vs_pe *old_pe; |
a0840e2e | 1360 | struct netns_ipvs *ipvs = net_ipvs(svc->net); |
0d1e71b0 SH |
1361 | |
1362 | pr_info("%s: enter\n", __func__); | |
1da177e4 | 1363 | |
f94fd041 JV |
1364 | /* Count only IPv4 services for old get/setsockopt interface */ |
1365 | if (svc->af == AF_INET) | |
a0840e2e | 1366 | ipvs->num_services--; |
f94fd041 | 1367 | |
6ef757f9 | 1368 | ip_vs_stop_estimator(svc->net, &svc->stats); |
1da177e4 LT |
1369 | |
1370 | /* Unbind scheduler */ | |
1371 | old_sched = svc->scheduler; | |
1372 | ip_vs_unbind_scheduler(svc); | |
6e08bfb8 | 1373 | ip_vs_scheduler_put(old_sched); |
1da177e4 | 1374 | |
0d1e71b0 SH |
1375 | /* Unbind persistence engine */ |
1376 | old_pe = svc->pe; | |
1377 | ip_vs_unbind_pe(svc); | |
1378 | ip_vs_pe_put(old_pe); | |
1379 | ||
1da177e4 LT |
1380 | /* Unbind app inc */ |
1381 | if (svc->inc) { | |
1382 | ip_vs_app_inc_put(svc->inc); | |
1383 | svc->inc = NULL; | |
1384 | } | |
1385 | ||
1386 | /* | |
1387 | * Unlink the whole destination list | |
1388 | */ | |
1389 | list_for_each_entry_safe(dest, nxt, &svc->destinations, n_list) { | |
1390 | __ip_vs_unlink_dest(svc, dest, 0); | |
29c2026f | 1391 | __ip_vs_del_dest(svc->net, dest); |
1da177e4 LT |
1392 | } |
1393 | ||
1394 | /* | |
1395 | * Update the virtual service counters | |
1396 | */ | |
1397 | if (svc->port == FTPPORT) | |
763f8d0e | 1398 | atomic_dec(&ipvs->ftpsvc_counter); |
1da177e4 | 1399 | else if (svc->port == 0) |
763f8d0e | 1400 | atomic_dec(&ipvs->nullsvc_counter); |
1da177e4 LT |
1401 | |
1402 | /* | |
1403 | * Free the service if nobody refers to it | |
1404 | */ | |
26c15cfd JA |
1405 | if (atomic_read(&svc->refcnt) == 0) { |
1406 | IP_VS_DBG_BUF(3, "Removing service %u/%s:%u usecnt=%d\n", | |
1407 | svc->fwmark, | |
1408 | IP_VS_DBG_ADDR(svc->af, &svc->addr), | |
1409 | ntohs(svc->port), atomic_read(&svc->usecnt)); | |
b17fc996 | 1410 | free_percpu(svc->stats.cpustats); |
1da177e4 | 1411 | kfree(svc); |
26c15cfd | 1412 | } |
1da177e4 LT |
1413 | |
1414 | /* decrease the module use count */ | |
1415 | ip_vs_use_count_dec(); | |
1416 | } | |
1417 | ||
1418 | /* | |
26c15cfd | 1419 | * Unlink a service from list and try to delete it if its refcnt reached 0 |
1da177e4 | 1420 | */ |
26c15cfd | 1421 | static void ip_vs_unlink_service(struct ip_vs_service *svc) |
1da177e4 | 1422 | { |
1da177e4 LT |
1423 | /* |
1424 | * Unhash it from the service table | |
1425 | */ | |
1426 | write_lock_bh(&__ip_vs_svc_lock); | |
1427 | ||
1428 | ip_vs_svc_unhash(svc); | |
1429 | ||
1430 | /* | |
1431 | * Wait until all the svc users go away. | |
1432 | */ | |
26c15cfd | 1433 | IP_VS_WAIT_WHILE(atomic_read(&svc->usecnt) > 0); |
1da177e4 LT |
1434 | |
1435 | __ip_vs_del_service(svc); | |
1436 | ||
1437 | write_unlock_bh(&__ip_vs_svc_lock); | |
26c15cfd JA |
1438 | } |
1439 | ||
1440 | /* | |
1441 | * Delete a service from the service list | |
1442 | */ | |
1443 | static int ip_vs_del_service(struct ip_vs_service *svc) | |
1444 | { | |
1445 | if (svc == NULL) | |
1446 | return -EEXIST; | |
1447 | ip_vs_unlink_service(svc); | |
1da177e4 LT |
1448 | |
1449 | return 0; | |
1450 | } | |
1451 | ||
1452 | ||
1453 | /* | |
1454 | * Flush all the virtual services | |
1455 | */ | |
fc723250 | 1456 | static int ip_vs_flush(struct net *net) |
1da177e4 LT |
1457 | { |
1458 | int idx; | |
1459 | struct ip_vs_service *svc, *nxt; | |
1460 | ||
1461 | /* | |
fc723250 | 1462 | * Flush the service table hashed by <netns,protocol,addr,port> |
1da177e4 LT |
1463 | */ |
1464 | for(idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { | |
fc723250 HS |
1465 | list_for_each_entry_safe(svc, nxt, &ip_vs_svc_table[idx], |
1466 | s_list) { | |
1467 | if (net_eq(svc->net, net)) | |
1468 | ip_vs_unlink_service(svc); | |
1da177e4 LT |
1469 | } |
1470 | } | |
1471 | ||
1472 | /* | |
1473 | * Flush the service table hashed by fwmark | |
1474 | */ | |
1475 | for(idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { | |
1476 | list_for_each_entry_safe(svc, nxt, | |
1477 | &ip_vs_svc_fwm_table[idx], f_list) { | |
fc723250 HS |
1478 | if (net_eq(svc->net, net)) |
1479 | ip_vs_unlink_service(svc); | |
1da177e4 LT |
1480 | } |
1481 | } | |
1482 | ||
1483 | return 0; | |
1484 | } | |
1485 | ||
7a4f0761 HS |
1486 | /* |
1487 | * Delete service by {netns} in the service table. | |
1488 | * Called by __ip_vs_cleanup() | |
1489 | */ | |
503cf15a | 1490 | void ip_vs_service_net_cleanup(struct net *net) |
7a4f0761 HS |
1491 | { |
1492 | EnterFunction(2); | |
1493 | /* Check for "full" addressed entries */ | |
1494 | mutex_lock(&__ip_vs_mutex); | |
1495 | ip_vs_flush(net); | |
1496 | mutex_unlock(&__ip_vs_mutex); | |
1497 | LeaveFunction(2); | |
1498 | } | |
1499 | /* | |
1500 | * Release dst hold by dst_cache | |
1501 | */ | |
1502 | static inline void | |
1503 | __ip_vs_dev_reset(struct ip_vs_dest *dest, struct net_device *dev) | |
1504 | { | |
1505 | spin_lock_bh(&dest->dst_lock); | |
1506 | if (dest->dst_cache && dest->dst_cache->dev == dev) { | |
1507 | IP_VS_DBG_BUF(3, "Reset dev:%s dest %s:%u ,dest->refcnt=%d\n", | |
1508 | dev->name, | |
1509 | IP_VS_DBG_ADDR(dest->af, &dest->addr), | |
1510 | ntohs(dest->port), | |
1511 | atomic_read(&dest->refcnt)); | |
1512 | ip_vs_dst_reset(dest); | |
1513 | } | |
1514 | spin_unlock_bh(&dest->dst_lock); | |
1515 | ||
1516 | } | |
1517 | /* | |
1518 | * Netdev event receiver | |
1519 | * Currently only NETDEV_UNREGISTER is handled, i.e. if we hold a reference to | |
1520 | * a device that is "unregister" it must be released. | |
1521 | */ | |
1522 | static int ip_vs_dst_event(struct notifier_block *this, unsigned long event, | |
1523 | void *ptr) | |
1524 | { | |
1525 | struct net_device *dev = ptr; | |
1526 | struct net *net = dev_net(dev); | |
283283c4 | 1527 | struct netns_ipvs *ipvs = net_ipvs(net); |
7a4f0761 HS |
1528 | struct ip_vs_service *svc; |
1529 | struct ip_vs_dest *dest; | |
1530 | unsigned int idx; | |
1531 | ||
283283c4 | 1532 | if (event != NETDEV_UNREGISTER || !ipvs) |
7a4f0761 HS |
1533 | return NOTIFY_DONE; |
1534 | IP_VS_DBG(3, "%s() dev=%s\n", __func__, dev->name); | |
1535 | EnterFunction(2); | |
1536 | mutex_lock(&__ip_vs_mutex); | |
1537 | for (idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { | |
1538 | list_for_each_entry(svc, &ip_vs_svc_table[idx], s_list) { | |
1539 | if (net_eq(svc->net, net)) { | |
1540 | list_for_each_entry(dest, &svc->destinations, | |
1541 | n_list) { | |
1542 | __ip_vs_dev_reset(dest, dev); | |
1543 | } | |
1544 | } | |
1545 | } | |
1546 | ||
1547 | list_for_each_entry(svc, &ip_vs_svc_fwm_table[idx], f_list) { | |
1548 | if (net_eq(svc->net, net)) { | |
1549 | list_for_each_entry(dest, &svc->destinations, | |
1550 | n_list) { | |
1551 | __ip_vs_dev_reset(dest, dev); | |
1552 | } | |
1553 | } | |
1554 | ||
1555 | } | |
1556 | } | |
1557 | ||
283283c4 | 1558 | list_for_each_entry(dest, &ipvs->dest_trash, n_list) { |
7a4f0761 HS |
1559 | __ip_vs_dev_reset(dest, dev); |
1560 | } | |
1561 | mutex_unlock(&__ip_vs_mutex); | |
1562 | LeaveFunction(2); | |
1563 | return NOTIFY_DONE; | |
1564 | } | |
1da177e4 LT |
1565 | |
1566 | /* | |
1567 | * Zero counters in a service or all services | |
1568 | */ | |
1569 | static int ip_vs_zero_service(struct ip_vs_service *svc) | |
1570 | { | |
1571 | struct ip_vs_dest *dest; | |
1572 | ||
1573 | write_lock_bh(&__ip_vs_svc_lock); | |
1574 | list_for_each_entry(dest, &svc->destinations, n_list) { | |
1575 | ip_vs_zero_stats(&dest->stats); | |
1576 | } | |
1577 | ip_vs_zero_stats(&svc->stats); | |
1578 | write_unlock_bh(&__ip_vs_svc_lock); | |
1579 | return 0; | |
1580 | } | |
1581 | ||
fc723250 | 1582 | static int ip_vs_zero_all(struct net *net) |
1da177e4 LT |
1583 | { |
1584 | int idx; | |
1585 | struct ip_vs_service *svc; | |
1586 | ||
1587 | for(idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { | |
1588 | list_for_each_entry(svc, &ip_vs_svc_table[idx], s_list) { | |
fc723250 HS |
1589 | if (net_eq(svc->net, net)) |
1590 | ip_vs_zero_service(svc); | |
1da177e4 LT |
1591 | } |
1592 | } | |
1593 | ||
1594 | for(idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { | |
1595 | list_for_each_entry(svc, &ip_vs_svc_fwm_table[idx], f_list) { | |
fc723250 HS |
1596 | if (net_eq(svc->net, net)) |
1597 | ip_vs_zero_service(svc); | |
1da177e4 LT |
1598 | } |
1599 | } | |
1600 | ||
2a0751af | 1601 | ip_vs_zero_stats(&net_ipvs(net)->tot_stats); |
1da177e4 LT |
1602 | return 0; |
1603 | } | |
1604 | ||
14e40546 | 1605 | #ifdef CONFIG_SYSCTL |
749c42b6 JA |
1606 | |
1607 | static int zero; | |
1608 | static int three = 3; | |
1609 | ||
1da177e4 | 1610 | static int |
8d65af78 | 1611 | proc_do_defense_mode(ctl_table *table, int write, |
1da177e4 LT |
1612 | void __user *buffer, size_t *lenp, loff_t *ppos) |
1613 | { | |
9330419d | 1614 | struct net *net = current->nsproxy->net_ns; |
1da177e4 LT |
1615 | int *valp = table->data; |
1616 | int val = *valp; | |
1617 | int rc; | |
1618 | ||
8d65af78 | 1619 | rc = proc_dointvec(table, write, buffer, lenp, ppos); |
1da177e4 LT |
1620 | if (write && (*valp != val)) { |
1621 | if ((*valp < 0) || (*valp > 3)) { | |
1622 | /* Restore the correct value */ | |
1623 | *valp = val; | |
1624 | } else { | |
9330419d | 1625 | update_defense_level(net_ipvs(net)); |
1da177e4 LT |
1626 | } |
1627 | } | |
1628 | return rc; | |
1629 | } | |
1630 | ||
1da177e4 | 1631 | static int |
8d65af78 | 1632 | proc_do_sync_threshold(ctl_table *table, int write, |
1da177e4 LT |
1633 | void __user *buffer, size_t *lenp, loff_t *ppos) |
1634 | { | |
1635 | int *valp = table->data; | |
1636 | int val[2]; | |
1637 | int rc; | |
1638 | ||
1639 | /* backup the value first */ | |
1640 | memcpy(val, valp, sizeof(val)); | |
1641 | ||
8d65af78 | 1642 | rc = proc_dointvec(table, write, buffer, lenp, ppos); |
749c42b6 JA |
1643 | if (write && (valp[0] < 0 || valp[1] < 0 || |
1644 | (valp[0] >= valp[1] && valp[1]))) { | |
1da177e4 LT |
1645 | /* Restore the correct value */ |
1646 | memcpy(valp, val, sizeof(val)); | |
1647 | } | |
1648 | return rc; | |
1649 | } | |
1650 | ||
b880c1f0 HS |
1651 | static int |
1652 | proc_do_sync_mode(ctl_table *table, int write, | |
1653 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
1654 | { | |
1655 | int *valp = table->data; | |
1656 | int val = *valp; | |
1657 | int rc; | |
1658 | ||
1659 | rc = proc_dointvec(table, write, buffer, lenp, ppos); | |
1660 | if (write && (*valp != val)) { | |
1661 | if ((*valp < 0) || (*valp > 1)) { | |
1662 | /* Restore the correct value */ | |
1663 | *valp = val; | |
f73181c8 PNA |
1664 | } |
1665 | } | |
1666 | return rc; | |
1667 | } | |
1668 | ||
1669 | static int | |
1670 | proc_do_sync_ports(ctl_table *table, int write, | |
1671 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
1672 | { | |
1673 | int *valp = table->data; | |
1674 | int val = *valp; | |
1675 | int rc; | |
1676 | ||
1677 | rc = proc_dointvec(table, write, buffer, lenp, ppos); | |
1678 | if (write && (*valp != val)) { | |
1679 | if (*valp < 1 || !is_power_of_2(*valp)) { | |
1680 | /* Restore the correct value */ | |
1681 | *valp = val; | |
b880c1f0 HS |
1682 | } |
1683 | } | |
1684 | return rc; | |
1685 | } | |
1da177e4 LT |
1686 | |
1687 | /* | |
1688 | * IPVS sysctl table (under the /proc/sys/net/ipv4/vs/) | |
a0840e2e | 1689 | * Do not change order or insert new entries without |
503cf15a | 1690 | * align with netns init in ip_vs_control_net_init() |
1da177e4 LT |
1691 | */ |
1692 | ||
1693 | static struct ctl_table vs_vars[] = { | |
1694 | { | |
1da177e4 | 1695 | .procname = "amemthresh", |
1da177e4 LT |
1696 | .maxlen = sizeof(int), |
1697 | .mode = 0644, | |
6d9f239a | 1698 | .proc_handler = proc_dointvec, |
1da177e4 | 1699 | }, |
1da177e4 | 1700 | { |
1da177e4 | 1701 | .procname = "am_droprate", |
1da177e4 LT |
1702 | .maxlen = sizeof(int), |
1703 | .mode = 0644, | |
6d9f239a | 1704 | .proc_handler = proc_dointvec, |
1da177e4 LT |
1705 | }, |
1706 | { | |
1da177e4 | 1707 | .procname = "drop_entry", |
1da177e4 LT |
1708 | .maxlen = sizeof(int), |
1709 | .mode = 0644, | |
6d9f239a | 1710 | .proc_handler = proc_do_defense_mode, |
1da177e4 LT |
1711 | }, |
1712 | { | |
1da177e4 | 1713 | .procname = "drop_packet", |
1da177e4 LT |
1714 | .maxlen = sizeof(int), |
1715 | .mode = 0644, | |
6d9f239a | 1716 | .proc_handler = proc_do_defense_mode, |
1da177e4 | 1717 | }, |
f4bc17cd JA |
1718 | #ifdef CONFIG_IP_VS_NFCT |
1719 | { | |
1720 | .procname = "conntrack", | |
f4bc17cd JA |
1721 | .maxlen = sizeof(int), |
1722 | .mode = 0644, | |
1723 | .proc_handler = &proc_dointvec, | |
1724 | }, | |
1725 | #endif | |
1da177e4 | 1726 | { |
1da177e4 | 1727 | .procname = "secure_tcp", |
1da177e4 LT |
1728 | .maxlen = sizeof(int), |
1729 | .mode = 0644, | |
6d9f239a | 1730 | .proc_handler = proc_do_defense_mode, |
1da177e4 | 1731 | }, |
8a803040 JA |
1732 | { |
1733 | .procname = "snat_reroute", | |
8a803040 JA |
1734 | .maxlen = sizeof(int), |
1735 | .mode = 0644, | |
1736 | .proc_handler = &proc_dointvec, | |
1737 | }, | |
b880c1f0 HS |
1738 | { |
1739 | .procname = "sync_version", | |
b880c1f0 HS |
1740 | .maxlen = sizeof(int), |
1741 | .mode = 0644, | |
1742 | .proc_handler = &proc_do_sync_mode, | |
1743 | }, | |
f73181c8 PNA |
1744 | { |
1745 | .procname = "sync_ports", | |
1746 | .maxlen = sizeof(int), | |
1747 | .mode = 0644, | |
1748 | .proc_handler = &proc_do_sync_ports, | |
1749 | }, | |
1c003b15 PNA |
1750 | { |
1751 | .procname = "sync_qlen_max", | |
1752 | .maxlen = sizeof(int), | |
1753 | .mode = 0644, | |
1754 | .proc_handler = proc_dointvec, | |
1755 | }, | |
1756 | { | |
1757 | .procname = "sync_sock_size", | |
1758 | .maxlen = sizeof(int), | |
1759 | .mode = 0644, | |
1760 | .proc_handler = proc_dointvec, | |
1761 | }, | |
a0840e2e HS |
1762 | { |
1763 | .procname = "cache_bypass", | |
1764 | .maxlen = sizeof(int), | |
1765 | .mode = 0644, | |
1766 | .proc_handler = proc_dointvec, | |
1767 | }, | |
1768 | { | |
1769 | .procname = "expire_nodest_conn", | |
1770 | .maxlen = sizeof(int), | |
1771 | .mode = 0644, | |
1772 | .proc_handler = proc_dointvec, | |
1773 | }, | |
1774 | { | |
1775 | .procname = "expire_quiescent_template", | |
1776 | .maxlen = sizeof(int), | |
1777 | .mode = 0644, | |
1778 | .proc_handler = proc_dointvec, | |
1779 | }, | |
1780 | { | |
1781 | .procname = "sync_threshold", | |
1782 | .maxlen = | |
1783 | sizeof(((struct netns_ipvs *)0)->sysctl_sync_threshold), | |
1784 | .mode = 0644, | |
1785 | .proc_handler = proc_do_sync_threshold, | |
1786 | }, | |
749c42b6 JA |
1787 | { |
1788 | .procname = "sync_refresh_period", | |
1789 | .maxlen = sizeof(int), | |
1790 | .mode = 0644, | |
1791 | .proc_handler = proc_dointvec_jiffies, | |
1792 | }, | |
1793 | { | |
1794 | .procname = "sync_retries", | |
1795 | .maxlen = sizeof(int), | |
1796 | .mode = 0644, | |
1797 | .proc_handler = proc_dointvec_minmax, | |
1798 | .extra1 = &zero, | |
1799 | .extra2 = &three, | |
1800 | }, | |
a0840e2e HS |
1801 | { |
1802 | .procname = "nat_icmp_send", | |
1803 | .maxlen = sizeof(int), | |
1804 | .mode = 0644, | |
1805 | .proc_handler = proc_dointvec, | |
1806 | }, | |
3654e611 JA |
1807 | { |
1808 | .procname = "pmtu_disc", | |
1809 | .maxlen = sizeof(int), | |
1810 | .mode = 0644, | |
1811 | .proc_handler = proc_dointvec, | |
1812 | }, | |
0c12582f JA |
1813 | { |
1814 | .procname = "backup_only", | |
1815 | .maxlen = sizeof(int), | |
1816 | .mode = 0644, | |
1817 | .proc_handler = proc_dointvec, | |
1818 | }, | |
a0840e2e HS |
1819 | #ifdef CONFIG_IP_VS_DEBUG |
1820 | { | |
1821 | .procname = "debug_level", | |
1822 | .data = &sysctl_ip_vs_debug_level, | |
1823 | .maxlen = sizeof(int), | |
1824 | .mode = 0644, | |
1825 | .proc_handler = proc_dointvec, | |
1826 | }, | |
1827 | #endif | |
1da177e4 LT |
1828 | #if 0 |
1829 | { | |
1da177e4 LT |
1830 | .procname = "timeout_established", |
1831 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_ESTABLISHED], | |
1832 | .maxlen = sizeof(int), | |
1833 | .mode = 0644, | |
6d9f239a | 1834 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1835 | }, |
1836 | { | |
1da177e4 LT |
1837 | .procname = "timeout_synsent", |
1838 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_SYN_SENT], | |
1839 | .maxlen = sizeof(int), | |
1840 | .mode = 0644, | |
6d9f239a | 1841 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1842 | }, |
1843 | { | |
1da177e4 LT |
1844 | .procname = "timeout_synrecv", |
1845 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_SYN_RECV], | |
1846 | .maxlen = sizeof(int), | |
1847 | .mode = 0644, | |
6d9f239a | 1848 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1849 | }, |
1850 | { | |
1da177e4 LT |
1851 | .procname = "timeout_finwait", |
1852 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_FIN_WAIT], | |
1853 | .maxlen = sizeof(int), | |
1854 | .mode = 0644, | |
6d9f239a | 1855 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1856 | }, |
1857 | { | |
1da177e4 LT |
1858 | .procname = "timeout_timewait", |
1859 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_TIME_WAIT], | |
1860 | .maxlen = sizeof(int), | |
1861 | .mode = 0644, | |
6d9f239a | 1862 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1863 | }, |
1864 | { | |
1da177e4 LT |
1865 | .procname = "timeout_close", |
1866 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_CLOSE], | |
1867 | .maxlen = sizeof(int), | |
1868 | .mode = 0644, | |
6d9f239a | 1869 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1870 | }, |
1871 | { | |
1da177e4 LT |
1872 | .procname = "timeout_closewait", |
1873 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_CLOSE_WAIT], | |
1874 | .maxlen = sizeof(int), | |
1875 | .mode = 0644, | |
6d9f239a | 1876 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1877 | }, |
1878 | { | |
1da177e4 LT |
1879 | .procname = "timeout_lastack", |
1880 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_LAST_ACK], | |
1881 | .maxlen = sizeof(int), | |
1882 | .mode = 0644, | |
6d9f239a | 1883 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1884 | }, |
1885 | { | |
1da177e4 LT |
1886 | .procname = "timeout_listen", |
1887 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_LISTEN], | |
1888 | .maxlen = sizeof(int), | |
1889 | .mode = 0644, | |
6d9f239a | 1890 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1891 | }, |
1892 | { | |
1da177e4 LT |
1893 | .procname = "timeout_synack", |
1894 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_SYNACK], | |
1895 | .maxlen = sizeof(int), | |
1896 | .mode = 0644, | |
6d9f239a | 1897 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1898 | }, |
1899 | { | |
1da177e4 LT |
1900 | .procname = "timeout_udp", |
1901 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_UDP], | |
1902 | .maxlen = sizeof(int), | |
1903 | .mode = 0644, | |
6d9f239a | 1904 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1905 | }, |
1906 | { | |
1da177e4 LT |
1907 | .procname = "timeout_icmp", |
1908 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_ICMP], | |
1909 | .maxlen = sizeof(int), | |
1910 | .mode = 0644, | |
6d9f239a | 1911 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1912 | }, |
1913 | #endif | |
f8572d8f | 1914 | { } |
1da177e4 LT |
1915 | }; |
1916 | ||
14e40546 | 1917 | #endif |
1da177e4 | 1918 | |
1da177e4 LT |
1919 | #ifdef CONFIG_PROC_FS |
1920 | ||
1921 | struct ip_vs_iter { | |
fc723250 | 1922 | struct seq_net_private p; /* Do not move this, netns depends upon it*/ |
1da177e4 LT |
1923 | struct list_head *table; |
1924 | int bucket; | |
1925 | }; | |
1926 | ||
1927 | /* | |
1928 | * Write the contents of the VS rule table to a PROCfs file. | |
1929 | * (It is kept just for backward compatibility) | |
1930 | */ | |
95c96174 | 1931 | static inline const char *ip_vs_fwd_name(unsigned int flags) |
1da177e4 LT |
1932 | { |
1933 | switch (flags & IP_VS_CONN_F_FWD_MASK) { | |
1934 | case IP_VS_CONN_F_LOCALNODE: | |
1935 | return "Local"; | |
1936 | case IP_VS_CONN_F_TUNNEL: | |
1937 | return "Tunnel"; | |
1938 | case IP_VS_CONN_F_DROUTE: | |
1939 | return "Route"; | |
1940 | default: | |
1941 | return "Masq"; | |
1942 | } | |
1943 | } | |
1944 | ||
1945 | ||
1946 | /* Get the Nth entry in the two lists */ | |
1947 | static struct ip_vs_service *ip_vs_info_array(struct seq_file *seq, loff_t pos) | |
1948 | { | |
fc723250 | 1949 | struct net *net = seq_file_net(seq); |
1da177e4 LT |
1950 | struct ip_vs_iter *iter = seq->private; |
1951 | int idx; | |
1952 | struct ip_vs_service *svc; | |
1953 | ||
1954 | /* look in hash by protocol */ | |
1955 | for (idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { | |
1956 | list_for_each_entry(svc, &ip_vs_svc_table[idx], s_list) { | |
fc723250 | 1957 | if (net_eq(svc->net, net) && pos-- == 0) { |
1da177e4 LT |
1958 | iter->table = ip_vs_svc_table; |
1959 | iter->bucket = idx; | |
1960 | return svc; | |
1961 | } | |
1962 | } | |
1963 | } | |
1964 | ||
1965 | /* keep looking in fwmark */ | |
1966 | for (idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { | |
1967 | list_for_each_entry(svc, &ip_vs_svc_fwm_table[idx], f_list) { | |
fc723250 | 1968 | if (net_eq(svc->net, net) && pos-- == 0) { |
1da177e4 LT |
1969 | iter->table = ip_vs_svc_fwm_table; |
1970 | iter->bucket = idx; | |
1971 | return svc; | |
1972 | } | |
1973 | } | |
1974 | } | |
1975 | ||
1976 | return NULL; | |
1977 | } | |
1978 | ||
1979 | static void *ip_vs_info_seq_start(struct seq_file *seq, loff_t *pos) | |
563e94f0 | 1980 | __acquires(__ip_vs_svc_lock) |
1da177e4 LT |
1981 | { |
1982 | ||
1983 | read_lock_bh(&__ip_vs_svc_lock); | |
1984 | return *pos ? ip_vs_info_array(seq, *pos - 1) : SEQ_START_TOKEN; | |
1985 | } | |
1986 | ||
1987 | ||
1988 | static void *ip_vs_info_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
1989 | { | |
1990 | struct list_head *e; | |
1991 | struct ip_vs_iter *iter; | |
1992 | struct ip_vs_service *svc; | |
1993 | ||
1994 | ++*pos; | |
1995 | if (v == SEQ_START_TOKEN) | |
1996 | return ip_vs_info_array(seq,0); | |
1997 | ||
1998 | svc = v; | |
1999 | iter = seq->private; | |
2000 | ||
2001 | if (iter->table == ip_vs_svc_table) { | |
2002 | /* next service in table hashed by protocol */ | |
2003 | if ((e = svc->s_list.next) != &ip_vs_svc_table[iter->bucket]) | |
2004 | return list_entry(e, struct ip_vs_service, s_list); | |
2005 | ||
2006 | ||
2007 | while (++iter->bucket < IP_VS_SVC_TAB_SIZE) { | |
2008 | list_for_each_entry(svc,&ip_vs_svc_table[iter->bucket], | |
2009 | s_list) { | |
2010 | return svc; | |
2011 | } | |
2012 | } | |
2013 | ||
2014 | iter->table = ip_vs_svc_fwm_table; | |
2015 | iter->bucket = -1; | |
2016 | goto scan_fwmark; | |
2017 | } | |
2018 | ||
2019 | /* next service in hashed by fwmark */ | |
2020 | if ((e = svc->f_list.next) != &ip_vs_svc_fwm_table[iter->bucket]) | |
2021 | return list_entry(e, struct ip_vs_service, f_list); | |
2022 | ||
2023 | scan_fwmark: | |
2024 | while (++iter->bucket < IP_VS_SVC_TAB_SIZE) { | |
2025 | list_for_each_entry(svc, &ip_vs_svc_fwm_table[iter->bucket], | |
2026 | f_list) | |
2027 | return svc; | |
2028 | } | |
2029 | ||
2030 | return NULL; | |
2031 | } | |
2032 | ||
2033 | static void ip_vs_info_seq_stop(struct seq_file *seq, void *v) | |
563e94f0 | 2034 | __releases(__ip_vs_svc_lock) |
1da177e4 LT |
2035 | { |
2036 | read_unlock_bh(&__ip_vs_svc_lock); | |
2037 | } | |
2038 | ||
2039 | ||
2040 | static int ip_vs_info_seq_show(struct seq_file *seq, void *v) | |
2041 | { | |
2042 | if (v == SEQ_START_TOKEN) { | |
2043 | seq_printf(seq, | |
2044 | "IP Virtual Server version %d.%d.%d (size=%d)\n", | |
6f7edb48 | 2045 | NVERSION(IP_VS_VERSION_CODE), ip_vs_conn_tab_size); |
1da177e4 LT |
2046 | seq_puts(seq, |
2047 | "Prot LocalAddress:Port Scheduler Flags\n"); | |
2048 | seq_puts(seq, | |
2049 | " -> RemoteAddress:Port Forward Weight ActiveConn InActConn\n"); | |
2050 | } else { | |
2051 | const struct ip_vs_service *svc = v; | |
2052 | const struct ip_vs_iter *iter = seq->private; | |
2053 | const struct ip_vs_dest *dest; | |
2054 | ||
667a5f18 VB |
2055 | if (iter->table == ip_vs_svc_table) { |
2056 | #ifdef CONFIG_IP_VS_IPV6 | |
2057 | if (svc->af == AF_INET6) | |
5b095d98 | 2058 | seq_printf(seq, "%s [%pI6]:%04X %s ", |
667a5f18 | 2059 | ip_vs_proto_name(svc->protocol), |
38ff4fa4 | 2060 | &svc->addr.in6, |
667a5f18 VB |
2061 | ntohs(svc->port), |
2062 | svc->scheduler->name); | |
2063 | else | |
2064 | #endif | |
26ec037f | 2065 | seq_printf(seq, "%s %08X:%04X %s %s ", |
667a5f18 VB |
2066 | ip_vs_proto_name(svc->protocol), |
2067 | ntohl(svc->addr.ip), | |
2068 | ntohs(svc->port), | |
26ec037f NC |
2069 | svc->scheduler->name, |
2070 | (svc->flags & IP_VS_SVC_F_ONEPACKET)?"ops ":""); | |
667a5f18 | 2071 | } else { |
26ec037f NC |
2072 | seq_printf(seq, "FWM %08X %s %s", |
2073 | svc->fwmark, svc->scheduler->name, | |
2074 | (svc->flags & IP_VS_SVC_F_ONEPACKET)?"ops ":""); | |
667a5f18 | 2075 | } |
1da177e4 LT |
2076 | |
2077 | if (svc->flags & IP_VS_SVC_F_PERSISTENT) | |
2078 | seq_printf(seq, "persistent %d %08X\n", | |
2079 | svc->timeout, | |
2080 | ntohl(svc->netmask)); | |
2081 | else | |
2082 | seq_putc(seq, '\n'); | |
2083 | ||
2084 | list_for_each_entry(dest, &svc->destinations, n_list) { | |
667a5f18 VB |
2085 | #ifdef CONFIG_IP_VS_IPV6 |
2086 | if (dest->af == AF_INET6) | |
2087 | seq_printf(seq, | |
5b095d98 | 2088 | " -> [%pI6]:%04X" |
667a5f18 | 2089 | " %-7s %-6d %-10d %-10d\n", |
38ff4fa4 | 2090 | &dest->addr.in6, |
667a5f18 VB |
2091 | ntohs(dest->port), |
2092 | ip_vs_fwd_name(atomic_read(&dest->conn_flags)), | |
2093 | atomic_read(&dest->weight), | |
2094 | atomic_read(&dest->activeconns), | |
2095 | atomic_read(&dest->inactconns)); | |
2096 | else | |
2097 | #endif | |
2098 | seq_printf(seq, | |
2099 | " -> %08X:%04X " | |
2100 | "%-7s %-6d %-10d %-10d\n", | |
2101 | ntohl(dest->addr.ip), | |
2102 | ntohs(dest->port), | |
2103 | ip_vs_fwd_name(atomic_read(&dest->conn_flags)), | |
2104 | atomic_read(&dest->weight), | |
2105 | atomic_read(&dest->activeconns), | |
2106 | atomic_read(&dest->inactconns)); | |
2107 | ||
1da177e4 LT |
2108 | } |
2109 | } | |
2110 | return 0; | |
2111 | } | |
2112 | ||
56b3d975 | 2113 | static const struct seq_operations ip_vs_info_seq_ops = { |
1da177e4 LT |
2114 | .start = ip_vs_info_seq_start, |
2115 | .next = ip_vs_info_seq_next, | |
2116 | .stop = ip_vs_info_seq_stop, | |
2117 | .show = ip_vs_info_seq_show, | |
2118 | }; | |
2119 | ||
2120 | static int ip_vs_info_open(struct inode *inode, struct file *file) | |
2121 | { | |
fc723250 | 2122 | return seq_open_net(inode, file, &ip_vs_info_seq_ops, |
cf7732e4 | 2123 | sizeof(struct ip_vs_iter)); |
1da177e4 LT |
2124 | } |
2125 | ||
9a32144e | 2126 | static const struct file_operations ip_vs_info_fops = { |
1da177e4 LT |
2127 | .owner = THIS_MODULE, |
2128 | .open = ip_vs_info_open, | |
2129 | .read = seq_read, | |
2130 | .llseek = seq_lseek, | |
0f08190f | 2131 | .release = seq_release_net, |
1da177e4 LT |
2132 | }; |
2133 | ||
1da177e4 LT |
2134 | static int ip_vs_stats_show(struct seq_file *seq, void *v) |
2135 | { | |
b17fc996 | 2136 | struct net *net = seq_file_single_net(seq); |
55a3d4e1 | 2137 | struct ip_vs_stats_user show; |
1da177e4 LT |
2138 | |
2139 | /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */ | |
2140 | seq_puts(seq, | |
2141 | " Total Incoming Outgoing Incoming Outgoing\n"); | |
2142 | seq_printf(seq, | |
2143 | " Conns Packets Packets Bytes Bytes\n"); | |
2144 | ||
55a3d4e1 JA |
2145 | ip_vs_copy_stats(&show, &net_ipvs(net)->tot_stats); |
2146 | seq_printf(seq, "%8X %8X %8X %16LX %16LX\n\n", show.conns, | |
2147 | show.inpkts, show.outpkts, | |
2148 | (unsigned long long) show.inbytes, | |
2149 | (unsigned long long) show.outbytes); | |
1da177e4 LT |
2150 | |
2151 | /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */ | |
2152 | seq_puts(seq, | |
2153 | " Conns/s Pkts/s Pkts/s Bytes/s Bytes/s\n"); | |
55a3d4e1 JA |
2154 | seq_printf(seq, "%8X %8X %8X %16X %16X\n", |
2155 | show.cps, show.inpps, show.outpps, | |
2156 | show.inbps, show.outbps); | |
1da177e4 LT |
2157 | |
2158 | return 0; | |
2159 | } | |
2160 | ||
2161 | static int ip_vs_stats_seq_open(struct inode *inode, struct file *file) | |
2162 | { | |
fc723250 | 2163 | return single_open_net(inode, file, ip_vs_stats_show); |
1da177e4 LT |
2164 | } |
2165 | ||
9a32144e | 2166 | static const struct file_operations ip_vs_stats_fops = { |
1da177e4 LT |
2167 | .owner = THIS_MODULE, |
2168 | .open = ip_vs_stats_seq_open, | |
2169 | .read = seq_read, | |
2170 | .llseek = seq_lseek, | |
0f08190f | 2171 | .release = single_release_net, |
1da177e4 LT |
2172 | }; |
2173 | ||
b17fc996 HS |
2174 | static int ip_vs_stats_percpu_show(struct seq_file *seq, void *v) |
2175 | { | |
2176 | struct net *net = seq_file_single_net(seq); | |
2a0751af JA |
2177 | struct ip_vs_stats *tot_stats = &net_ipvs(net)->tot_stats; |
2178 | struct ip_vs_cpu_stats *cpustats = tot_stats->cpustats; | |
ea9f22cc | 2179 | struct ip_vs_stats_user rates; |
b17fc996 HS |
2180 | int i; |
2181 | ||
2182 | /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */ | |
2183 | seq_puts(seq, | |
2184 | " Total Incoming Outgoing Incoming Outgoing\n"); | |
2185 | seq_printf(seq, | |
2186 | "CPU Conns Packets Packets Bytes Bytes\n"); | |
2187 | ||
2188 | for_each_possible_cpu(i) { | |
2a0751af JA |
2189 | struct ip_vs_cpu_stats *u = per_cpu_ptr(cpustats, i); |
2190 | unsigned int start; | |
2191 | __u64 inbytes, outbytes; | |
2192 | ||
2193 | do { | |
2194 | start = u64_stats_fetch_begin_bh(&u->syncp); | |
2195 | inbytes = u->ustats.inbytes; | |
2196 | outbytes = u->ustats.outbytes; | |
2197 | } while (u64_stats_fetch_retry_bh(&u->syncp, start)); | |
2198 | ||
b17fc996 | 2199 | seq_printf(seq, "%3X %8X %8X %8X %16LX %16LX\n", |
2a0751af JA |
2200 | i, u->ustats.conns, u->ustats.inpkts, |
2201 | u->ustats.outpkts, (__u64)inbytes, | |
2202 | (__u64)outbytes); | |
b17fc996 HS |
2203 | } |
2204 | ||
2205 | spin_lock_bh(&tot_stats->lock); | |
ea9f22cc | 2206 | |
b17fc996 HS |
2207 | seq_printf(seq, " ~ %8X %8X %8X %16LX %16LX\n\n", |
2208 | tot_stats->ustats.conns, tot_stats->ustats.inpkts, | |
2209 | tot_stats->ustats.outpkts, | |
2210 | (unsigned long long) tot_stats->ustats.inbytes, | |
2211 | (unsigned long long) tot_stats->ustats.outbytes); | |
2212 | ||
ea9f22cc JA |
2213 | ip_vs_read_estimator(&rates, tot_stats); |
2214 | ||
2215 | spin_unlock_bh(&tot_stats->lock); | |
2216 | ||
b17fc996 HS |
2217 | /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */ |
2218 | seq_puts(seq, | |
2219 | " Conns/s Pkts/s Pkts/s Bytes/s Bytes/s\n"); | |
2220 | seq_printf(seq, " %8X %8X %8X %16X %16X\n", | |
ea9f22cc JA |
2221 | rates.cps, |
2222 | rates.inpps, | |
2223 | rates.outpps, | |
2224 | rates.inbps, | |
2225 | rates.outbps); | |
b17fc996 HS |
2226 | |
2227 | return 0; | |
2228 | } | |
2229 | ||
2230 | static int ip_vs_stats_percpu_seq_open(struct inode *inode, struct file *file) | |
2231 | { | |
2232 | return single_open_net(inode, file, ip_vs_stats_percpu_show); | |
2233 | } | |
2234 | ||
2235 | static const struct file_operations ip_vs_stats_percpu_fops = { | |
2236 | .owner = THIS_MODULE, | |
2237 | .open = ip_vs_stats_percpu_seq_open, | |
2238 | .read = seq_read, | |
2239 | .llseek = seq_lseek, | |
0f08190f | 2240 | .release = single_release_net, |
b17fc996 | 2241 | }; |
1da177e4 LT |
2242 | #endif |
2243 | ||
2244 | /* | |
2245 | * Set timeout values for tcp tcpfin udp in the timeout_table. | |
2246 | */ | |
9330419d | 2247 | static int ip_vs_set_timeout(struct net *net, struct ip_vs_timeout_user *u) |
1da177e4 | 2248 | { |
091bb34c | 2249 | #if defined(CONFIG_IP_VS_PROTO_TCP) || defined(CONFIG_IP_VS_PROTO_UDP) |
9330419d | 2250 | struct ip_vs_proto_data *pd; |
091bb34c | 2251 | #endif |
9330419d | 2252 | |
1da177e4 LT |
2253 | IP_VS_DBG(2, "Setting timeout tcp:%d tcpfin:%d udp:%d\n", |
2254 | u->tcp_timeout, | |
2255 | u->tcp_fin_timeout, | |
2256 | u->udp_timeout); | |
2257 | ||
2258 | #ifdef CONFIG_IP_VS_PROTO_TCP | |
2259 | if (u->tcp_timeout) { | |
9330419d HS |
2260 | pd = ip_vs_proto_data_get(net, IPPROTO_TCP); |
2261 | pd->timeout_table[IP_VS_TCP_S_ESTABLISHED] | |
1da177e4 LT |
2262 | = u->tcp_timeout * HZ; |
2263 | } | |
2264 | ||
2265 | if (u->tcp_fin_timeout) { | |
9330419d HS |
2266 | pd = ip_vs_proto_data_get(net, IPPROTO_TCP); |
2267 | pd->timeout_table[IP_VS_TCP_S_FIN_WAIT] | |
1da177e4 LT |
2268 | = u->tcp_fin_timeout * HZ; |
2269 | } | |
2270 | #endif | |
2271 | ||
2272 | #ifdef CONFIG_IP_VS_PROTO_UDP | |
2273 | if (u->udp_timeout) { | |
9330419d HS |
2274 | pd = ip_vs_proto_data_get(net, IPPROTO_UDP); |
2275 | pd->timeout_table[IP_VS_UDP_S_NORMAL] | |
1da177e4 LT |
2276 | = u->udp_timeout * HZ; |
2277 | } | |
2278 | #endif | |
2279 | return 0; | |
2280 | } | |
2281 | ||
2282 | ||
2283 | #define SET_CMDID(cmd) (cmd - IP_VS_BASE_CTL) | |
2284 | #define SERVICE_ARG_LEN (sizeof(struct ip_vs_service_user)) | |
2285 | #define SVCDEST_ARG_LEN (sizeof(struct ip_vs_service_user) + \ | |
2286 | sizeof(struct ip_vs_dest_user)) | |
2287 | #define TIMEOUT_ARG_LEN (sizeof(struct ip_vs_timeout_user)) | |
2288 | #define DAEMON_ARG_LEN (sizeof(struct ip_vs_daemon_user)) | |
2289 | #define MAX_ARG_LEN SVCDEST_ARG_LEN | |
2290 | ||
9b5b5cff | 2291 | static const unsigned char set_arglen[SET_CMDID(IP_VS_SO_SET_MAX)+1] = { |
1da177e4 LT |
2292 | [SET_CMDID(IP_VS_SO_SET_ADD)] = SERVICE_ARG_LEN, |
2293 | [SET_CMDID(IP_VS_SO_SET_EDIT)] = SERVICE_ARG_LEN, | |
2294 | [SET_CMDID(IP_VS_SO_SET_DEL)] = SERVICE_ARG_LEN, | |
2295 | [SET_CMDID(IP_VS_SO_SET_FLUSH)] = 0, | |
2296 | [SET_CMDID(IP_VS_SO_SET_ADDDEST)] = SVCDEST_ARG_LEN, | |
2297 | [SET_CMDID(IP_VS_SO_SET_DELDEST)] = SVCDEST_ARG_LEN, | |
2298 | [SET_CMDID(IP_VS_SO_SET_EDITDEST)] = SVCDEST_ARG_LEN, | |
2299 | [SET_CMDID(IP_VS_SO_SET_TIMEOUT)] = TIMEOUT_ARG_LEN, | |
2300 | [SET_CMDID(IP_VS_SO_SET_STARTDAEMON)] = DAEMON_ARG_LEN, | |
2301 | [SET_CMDID(IP_VS_SO_SET_STOPDAEMON)] = DAEMON_ARG_LEN, | |
2302 | [SET_CMDID(IP_VS_SO_SET_ZERO)] = SERVICE_ARG_LEN, | |
2303 | }; | |
2304 | ||
c860c6b1 JV |
2305 | static void ip_vs_copy_usvc_compat(struct ip_vs_service_user_kern *usvc, |
2306 | struct ip_vs_service_user *usvc_compat) | |
2307 | { | |
0d1e71b0 SH |
2308 | memset(usvc, 0, sizeof(*usvc)); |
2309 | ||
c860c6b1 JV |
2310 | usvc->af = AF_INET; |
2311 | usvc->protocol = usvc_compat->protocol; | |
2312 | usvc->addr.ip = usvc_compat->addr; | |
2313 | usvc->port = usvc_compat->port; | |
2314 | usvc->fwmark = usvc_compat->fwmark; | |
2315 | ||
2316 | /* Deep copy of sched_name is not needed here */ | |
2317 | usvc->sched_name = usvc_compat->sched_name; | |
2318 | ||
2319 | usvc->flags = usvc_compat->flags; | |
2320 | usvc->timeout = usvc_compat->timeout; | |
2321 | usvc->netmask = usvc_compat->netmask; | |
2322 | } | |
2323 | ||
2324 | static void ip_vs_copy_udest_compat(struct ip_vs_dest_user_kern *udest, | |
2325 | struct ip_vs_dest_user *udest_compat) | |
2326 | { | |
0d1e71b0 SH |
2327 | memset(udest, 0, sizeof(*udest)); |
2328 | ||
c860c6b1 JV |
2329 | udest->addr.ip = udest_compat->addr; |
2330 | udest->port = udest_compat->port; | |
2331 | udest->conn_flags = udest_compat->conn_flags; | |
2332 | udest->weight = udest_compat->weight; | |
2333 | udest->u_threshold = udest_compat->u_threshold; | |
2334 | udest->l_threshold = udest_compat->l_threshold; | |
2335 | } | |
2336 | ||
1da177e4 LT |
2337 | static int |
2338 | do_ip_vs_set_ctl(struct sock *sk, int cmd, void __user *user, unsigned int len) | |
2339 | { | |
fc723250 | 2340 | struct net *net = sock_net(sk); |
1da177e4 LT |
2341 | int ret; |
2342 | unsigned char arg[MAX_ARG_LEN]; | |
c860c6b1 JV |
2343 | struct ip_vs_service_user *usvc_compat; |
2344 | struct ip_vs_service_user_kern usvc; | |
1da177e4 | 2345 | struct ip_vs_service *svc; |
c860c6b1 JV |
2346 | struct ip_vs_dest_user *udest_compat; |
2347 | struct ip_vs_dest_user_kern udest; | |
ae1d48b2 | 2348 | struct netns_ipvs *ipvs = net_ipvs(net); |
1da177e4 | 2349 | |
df008c91 | 2350 | if (!ns_capable(sock_net(sk)->user_ns, CAP_NET_ADMIN)) |
1da177e4 LT |
2351 | return -EPERM; |
2352 | ||
04bcef2a AV |
2353 | if (cmd < IP_VS_BASE_CTL || cmd > IP_VS_SO_SET_MAX) |
2354 | return -EINVAL; | |
2355 | if (len < 0 || len > MAX_ARG_LEN) | |
2356 | return -EINVAL; | |
1da177e4 | 2357 | if (len != set_arglen[SET_CMDID(cmd)]) { |
1e3e238e HE |
2358 | pr_err("set_ctl: len %u != %u\n", |
2359 | len, set_arglen[SET_CMDID(cmd)]); | |
1da177e4 LT |
2360 | return -EINVAL; |
2361 | } | |
2362 | ||
2363 | if (copy_from_user(arg, user, len) != 0) | |
2364 | return -EFAULT; | |
2365 | ||
2366 | /* increase the module use count */ | |
2367 | ip_vs_use_count_inc(); | |
2368 | ||
ae1d48b2 HS |
2369 | /* Handle daemons since they have another lock */ |
2370 | if (cmd == IP_VS_SO_SET_STARTDAEMON || | |
2371 | cmd == IP_VS_SO_SET_STOPDAEMON) { | |
2372 | struct ip_vs_daemon_user *dm = (struct ip_vs_daemon_user *)arg; | |
2373 | ||
2374 | if (mutex_lock_interruptible(&ipvs->sync_mutex)) { | |
2375 | ret = -ERESTARTSYS; | |
2376 | goto out_dec; | |
2377 | } | |
2378 | if (cmd == IP_VS_SO_SET_STARTDAEMON) | |
2379 | ret = start_sync_thread(net, dm->state, dm->mcast_ifn, | |
2380 | dm->syncid); | |
2381 | else | |
2382 | ret = stop_sync_thread(net, dm->state); | |
2383 | mutex_unlock(&ipvs->sync_mutex); | |
2384 | goto out_dec; | |
2385 | } | |
2386 | ||
14cc3e2b | 2387 | if (mutex_lock_interruptible(&__ip_vs_mutex)) { |
1da177e4 LT |
2388 | ret = -ERESTARTSYS; |
2389 | goto out_dec; | |
2390 | } | |
2391 | ||
2392 | if (cmd == IP_VS_SO_SET_FLUSH) { | |
2393 | /* Flush the virtual service */ | |
fc723250 | 2394 | ret = ip_vs_flush(net); |
1da177e4 LT |
2395 | goto out_unlock; |
2396 | } else if (cmd == IP_VS_SO_SET_TIMEOUT) { | |
2397 | /* Set timeout values for (tcp tcpfin udp) */ | |
9330419d | 2398 | ret = ip_vs_set_timeout(net, (struct ip_vs_timeout_user *)arg); |
1da177e4 | 2399 | goto out_unlock; |
1da177e4 LT |
2400 | } |
2401 | ||
c860c6b1 JV |
2402 | usvc_compat = (struct ip_vs_service_user *)arg; |
2403 | udest_compat = (struct ip_vs_dest_user *)(usvc_compat + 1); | |
2404 | ||
2405 | /* We only use the new structs internally, so copy userspace compat | |
2406 | * structs to extended internal versions */ | |
2407 | ip_vs_copy_usvc_compat(&usvc, usvc_compat); | |
2408 | ip_vs_copy_udest_compat(&udest, udest_compat); | |
1da177e4 LT |
2409 | |
2410 | if (cmd == IP_VS_SO_SET_ZERO) { | |
2411 | /* if no service address is set, zero counters in all */ | |
c860c6b1 | 2412 | if (!usvc.fwmark && !usvc.addr.ip && !usvc.port) { |
fc723250 | 2413 | ret = ip_vs_zero_all(net); |
1da177e4 LT |
2414 | goto out_unlock; |
2415 | } | |
2416 | } | |
2417 | ||
2906f66a VMR |
2418 | /* Check for valid protocol: TCP or UDP or SCTP, even for fwmark!=0 */ |
2419 | if (usvc.protocol != IPPROTO_TCP && usvc.protocol != IPPROTO_UDP && | |
2420 | usvc.protocol != IPPROTO_SCTP) { | |
1e3e238e HE |
2421 | pr_err("set_ctl: invalid protocol: %d %pI4:%d %s\n", |
2422 | usvc.protocol, &usvc.addr.ip, | |
2423 | ntohs(usvc.port), usvc.sched_name); | |
1da177e4 LT |
2424 | ret = -EFAULT; |
2425 | goto out_unlock; | |
2426 | } | |
2427 | ||
2428 | /* Lookup the exact service by <protocol, addr, port> or fwmark */ | |
c860c6b1 | 2429 | if (usvc.fwmark == 0) |
fc723250 | 2430 | svc = __ip_vs_service_find(net, usvc.af, usvc.protocol, |
26c15cfd | 2431 | &usvc.addr, usvc.port); |
1da177e4 | 2432 | else |
fc723250 | 2433 | svc = __ip_vs_svc_fwm_find(net, usvc.af, usvc.fwmark); |
1da177e4 LT |
2434 | |
2435 | if (cmd != IP_VS_SO_SET_ADD | |
c860c6b1 | 2436 | && (svc == NULL || svc->protocol != usvc.protocol)) { |
1da177e4 | 2437 | ret = -ESRCH; |
26c15cfd | 2438 | goto out_unlock; |
1da177e4 LT |
2439 | } |
2440 | ||
2441 | switch (cmd) { | |
2442 | case IP_VS_SO_SET_ADD: | |
2443 | if (svc != NULL) | |
2444 | ret = -EEXIST; | |
2445 | else | |
fc723250 | 2446 | ret = ip_vs_add_service(net, &usvc, &svc); |
1da177e4 LT |
2447 | break; |
2448 | case IP_VS_SO_SET_EDIT: | |
c860c6b1 | 2449 | ret = ip_vs_edit_service(svc, &usvc); |
1da177e4 LT |
2450 | break; |
2451 | case IP_VS_SO_SET_DEL: | |
2452 | ret = ip_vs_del_service(svc); | |
2453 | if (!ret) | |
2454 | goto out_unlock; | |
2455 | break; | |
2456 | case IP_VS_SO_SET_ZERO: | |
2457 | ret = ip_vs_zero_service(svc); | |
2458 | break; | |
2459 | case IP_VS_SO_SET_ADDDEST: | |
c860c6b1 | 2460 | ret = ip_vs_add_dest(svc, &udest); |
1da177e4 LT |
2461 | break; |
2462 | case IP_VS_SO_SET_EDITDEST: | |
c860c6b1 | 2463 | ret = ip_vs_edit_dest(svc, &udest); |
1da177e4 LT |
2464 | break; |
2465 | case IP_VS_SO_SET_DELDEST: | |
c860c6b1 | 2466 | ret = ip_vs_del_dest(svc, &udest); |
1da177e4 LT |
2467 | break; |
2468 | default: | |
2469 | ret = -EINVAL; | |
2470 | } | |
2471 | ||
1da177e4 | 2472 | out_unlock: |
14cc3e2b | 2473 | mutex_unlock(&__ip_vs_mutex); |
1da177e4 LT |
2474 | out_dec: |
2475 | /* decrease the module use count */ | |
2476 | ip_vs_use_count_dec(); | |
2477 | ||
2478 | return ret; | |
2479 | } | |
2480 | ||
2481 | ||
1da177e4 LT |
2482 | static void |
2483 | ip_vs_copy_service(struct ip_vs_service_entry *dst, struct ip_vs_service *src) | |
2484 | { | |
2485 | dst->protocol = src->protocol; | |
e7ade46a | 2486 | dst->addr = src->addr.ip; |
1da177e4 LT |
2487 | dst->port = src->port; |
2488 | dst->fwmark = src->fwmark; | |
4da62fc7 | 2489 | strlcpy(dst->sched_name, src->scheduler->name, sizeof(dst->sched_name)); |
1da177e4 LT |
2490 | dst->flags = src->flags; |
2491 | dst->timeout = src->timeout / HZ; | |
2492 | dst->netmask = src->netmask; | |
2493 | dst->num_dests = src->num_dests; | |
2494 | ip_vs_copy_stats(&dst->stats, &src->stats); | |
2495 | } | |
2496 | ||
2497 | static inline int | |
fc723250 HS |
2498 | __ip_vs_get_service_entries(struct net *net, |
2499 | const struct ip_vs_get_services *get, | |
1da177e4 LT |
2500 | struct ip_vs_get_services __user *uptr) |
2501 | { | |
2502 | int idx, count=0; | |
2503 | struct ip_vs_service *svc; | |
2504 | struct ip_vs_service_entry entry; | |
2505 | int ret = 0; | |
2506 | ||
2507 | for (idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { | |
2508 | list_for_each_entry(svc, &ip_vs_svc_table[idx], s_list) { | |
f94fd041 | 2509 | /* Only expose IPv4 entries to old interface */ |
fc723250 | 2510 | if (svc->af != AF_INET || !net_eq(svc->net, net)) |
f94fd041 JV |
2511 | continue; |
2512 | ||
1da177e4 LT |
2513 | if (count >= get->num_services) |
2514 | goto out; | |
4da62fc7 | 2515 | memset(&entry, 0, sizeof(entry)); |
1da177e4 LT |
2516 | ip_vs_copy_service(&entry, svc); |
2517 | if (copy_to_user(&uptr->entrytable[count], | |
2518 | &entry, sizeof(entry))) { | |
2519 | ret = -EFAULT; | |
2520 | goto out; | |
2521 | } | |
2522 | count++; | |
2523 | } | |
2524 | } | |
2525 | ||
2526 | for (idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { | |
2527 | list_for_each_entry(svc, &ip_vs_svc_fwm_table[idx], f_list) { | |
f94fd041 | 2528 | /* Only expose IPv4 entries to old interface */ |
fc723250 | 2529 | if (svc->af != AF_INET || !net_eq(svc->net, net)) |
f94fd041 JV |
2530 | continue; |
2531 | ||
1da177e4 LT |
2532 | if (count >= get->num_services) |
2533 | goto out; | |
4da62fc7 | 2534 | memset(&entry, 0, sizeof(entry)); |
1da177e4 LT |
2535 | ip_vs_copy_service(&entry, svc); |
2536 | if (copy_to_user(&uptr->entrytable[count], | |
2537 | &entry, sizeof(entry))) { | |
2538 | ret = -EFAULT; | |
2539 | goto out; | |
2540 | } | |
2541 | count++; | |
2542 | } | |
2543 | } | |
552ad65a | 2544 | out: |
1da177e4 LT |
2545 | return ret; |
2546 | } | |
2547 | ||
2548 | static inline int | |
fc723250 | 2549 | __ip_vs_get_dest_entries(struct net *net, const struct ip_vs_get_dests *get, |
1da177e4 LT |
2550 | struct ip_vs_get_dests __user *uptr) |
2551 | { | |
2552 | struct ip_vs_service *svc; | |
b18610de | 2553 | union nf_inet_addr addr = { .ip = get->addr }; |
1da177e4 LT |
2554 | int ret = 0; |
2555 | ||
2556 | if (get->fwmark) | |
fc723250 | 2557 | svc = __ip_vs_svc_fwm_find(net, AF_INET, get->fwmark); |
1da177e4 | 2558 | else |
fc723250 | 2559 | svc = __ip_vs_service_find(net, AF_INET, get->protocol, &addr, |
26c15cfd | 2560 | get->port); |
b18610de | 2561 | |
1da177e4 LT |
2562 | if (svc) { |
2563 | int count = 0; | |
2564 | struct ip_vs_dest *dest; | |
2565 | struct ip_vs_dest_entry entry; | |
2566 | ||
2567 | list_for_each_entry(dest, &svc->destinations, n_list) { | |
2568 | if (count >= get->num_dests) | |
2569 | break; | |
2570 | ||
e7ade46a | 2571 | entry.addr = dest->addr.ip; |
1da177e4 LT |
2572 | entry.port = dest->port; |
2573 | entry.conn_flags = atomic_read(&dest->conn_flags); | |
2574 | entry.weight = atomic_read(&dest->weight); | |
2575 | entry.u_threshold = dest->u_threshold; | |
2576 | entry.l_threshold = dest->l_threshold; | |
2577 | entry.activeconns = atomic_read(&dest->activeconns); | |
2578 | entry.inactconns = atomic_read(&dest->inactconns); | |
2579 | entry.persistconns = atomic_read(&dest->persistconns); | |
2580 | ip_vs_copy_stats(&entry.stats, &dest->stats); | |
2581 | if (copy_to_user(&uptr->entrytable[count], | |
2582 | &entry, sizeof(entry))) { | |
2583 | ret = -EFAULT; | |
2584 | break; | |
2585 | } | |
2586 | count++; | |
2587 | } | |
1da177e4 LT |
2588 | } else |
2589 | ret = -ESRCH; | |
2590 | return ret; | |
2591 | } | |
2592 | ||
2593 | static inline void | |
9330419d | 2594 | __ip_vs_get_timeouts(struct net *net, struct ip_vs_timeout_user *u) |
1da177e4 | 2595 | { |
091bb34c | 2596 | #if defined(CONFIG_IP_VS_PROTO_TCP) || defined(CONFIG_IP_VS_PROTO_UDP) |
9330419d | 2597 | struct ip_vs_proto_data *pd; |
091bb34c | 2598 | #endif |
9330419d | 2599 | |
b61a602e AB |
2600 | memset(u, 0, sizeof (*u)); |
2601 | ||
1da177e4 | 2602 | #ifdef CONFIG_IP_VS_PROTO_TCP |
9330419d HS |
2603 | pd = ip_vs_proto_data_get(net, IPPROTO_TCP); |
2604 | u->tcp_timeout = pd->timeout_table[IP_VS_TCP_S_ESTABLISHED] / HZ; | |
2605 | u->tcp_fin_timeout = pd->timeout_table[IP_VS_TCP_S_FIN_WAIT] / HZ; | |
1da177e4 LT |
2606 | #endif |
2607 | #ifdef CONFIG_IP_VS_PROTO_UDP | |
9330419d | 2608 | pd = ip_vs_proto_data_get(net, IPPROTO_UDP); |
1da177e4 | 2609 | u->udp_timeout = |
9330419d | 2610 | pd->timeout_table[IP_VS_UDP_S_NORMAL] / HZ; |
1da177e4 LT |
2611 | #endif |
2612 | } | |
2613 | ||
2614 | ||
2615 | #define GET_CMDID(cmd) (cmd - IP_VS_BASE_CTL) | |
2616 | #define GET_INFO_ARG_LEN (sizeof(struct ip_vs_getinfo)) | |
2617 | #define GET_SERVICES_ARG_LEN (sizeof(struct ip_vs_get_services)) | |
2618 | #define GET_SERVICE_ARG_LEN (sizeof(struct ip_vs_service_entry)) | |
2619 | #define GET_DESTS_ARG_LEN (sizeof(struct ip_vs_get_dests)) | |
2620 | #define GET_TIMEOUT_ARG_LEN (sizeof(struct ip_vs_timeout_user)) | |
2621 | #define GET_DAEMON_ARG_LEN (sizeof(struct ip_vs_daemon_user) * 2) | |
2622 | ||
9b5b5cff | 2623 | static const unsigned char get_arglen[GET_CMDID(IP_VS_SO_GET_MAX)+1] = { |
1da177e4 LT |
2624 | [GET_CMDID(IP_VS_SO_GET_VERSION)] = 64, |
2625 | [GET_CMDID(IP_VS_SO_GET_INFO)] = GET_INFO_ARG_LEN, | |
2626 | [GET_CMDID(IP_VS_SO_GET_SERVICES)] = GET_SERVICES_ARG_LEN, | |
2627 | [GET_CMDID(IP_VS_SO_GET_SERVICE)] = GET_SERVICE_ARG_LEN, | |
2628 | [GET_CMDID(IP_VS_SO_GET_DESTS)] = GET_DESTS_ARG_LEN, | |
2629 | [GET_CMDID(IP_VS_SO_GET_TIMEOUT)] = GET_TIMEOUT_ARG_LEN, | |
2630 | [GET_CMDID(IP_VS_SO_GET_DAEMON)] = GET_DAEMON_ARG_LEN, | |
2631 | }; | |
2632 | ||
2633 | static int | |
2634 | do_ip_vs_get_ctl(struct sock *sk, int cmd, void __user *user, int *len) | |
2635 | { | |
2636 | unsigned char arg[128]; | |
2637 | int ret = 0; | |
04bcef2a | 2638 | unsigned int copylen; |
fc723250 | 2639 | struct net *net = sock_net(sk); |
f131315f | 2640 | struct netns_ipvs *ipvs = net_ipvs(net); |
1da177e4 | 2641 | |
fc723250 | 2642 | BUG_ON(!net); |
df008c91 | 2643 | if (!ns_capable(sock_net(sk)->user_ns, CAP_NET_ADMIN)) |
1da177e4 LT |
2644 | return -EPERM; |
2645 | ||
04bcef2a AV |
2646 | if (cmd < IP_VS_BASE_CTL || cmd > IP_VS_SO_GET_MAX) |
2647 | return -EINVAL; | |
2648 | ||
1da177e4 | 2649 | if (*len < get_arglen[GET_CMDID(cmd)]) { |
1e3e238e HE |
2650 | pr_err("get_ctl: len %u < %u\n", |
2651 | *len, get_arglen[GET_CMDID(cmd)]); | |
1da177e4 LT |
2652 | return -EINVAL; |
2653 | } | |
2654 | ||
04bcef2a AV |
2655 | copylen = get_arglen[GET_CMDID(cmd)]; |
2656 | if (copylen > 128) | |
2657 | return -EINVAL; | |
2658 | ||
2659 | if (copy_from_user(arg, user, copylen) != 0) | |
1da177e4 | 2660 | return -EFAULT; |
ae1d48b2 HS |
2661 | /* |
2662 | * Handle daemons first since it has its own locking | |
2663 | */ | |
2664 | if (cmd == IP_VS_SO_GET_DAEMON) { | |
2665 | struct ip_vs_daemon_user d[2]; | |
2666 | ||
2667 | memset(&d, 0, sizeof(d)); | |
2668 | if (mutex_lock_interruptible(&ipvs->sync_mutex)) | |
2669 | return -ERESTARTSYS; | |
2670 | ||
2671 | if (ipvs->sync_state & IP_VS_STATE_MASTER) { | |
2672 | d[0].state = IP_VS_STATE_MASTER; | |
2673 | strlcpy(d[0].mcast_ifn, ipvs->master_mcast_ifn, | |
2674 | sizeof(d[0].mcast_ifn)); | |
2675 | d[0].syncid = ipvs->master_syncid; | |
2676 | } | |
2677 | if (ipvs->sync_state & IP_VS_STATE_BACKUP) { | |
2678 | d[1].state = IP_VS_STATE_BACKUP; | |
2679 | strlcpy(d[1].mcast_ifn, ipvs->backup_mcast_ifn, | |
2680 | sizeof(d[1].mcast_ifn)); | |
2681 | d[1].syncid = ipvs->backup_syncid; | |
2682 | } | |
2683 | if (copy_to_user(user, &d, sizeof(d)) != 0) | |
2684 | ret = -EFAULT; | |
2685 | mutex_unlock(&ipvs->sync_mutex); | |
2686 | return ret; | |
2687 | } | |
1da177e4 | 2688 | |
14cc3e2b | 2689 | if (mutex_lock_interruptible(&__ip_vs_mutex)) |
1da177e4 LT |
2690 | return -ERESTARTSYS; |
2691 | ||
2692 | switch (cmd) { | |
2693 | case IP_VS_SO_GET_VERSION: | |
2694 | { | |
2695 | char buf[64]; | |
2696 | ||
2697 | sprintf(buf, "IP Virtual Server version %d.%d.%d (size=%d)", | |
6f7edb48 | 2698 | NVERSION(IP_VS_VERSION_CODE), ip_vs_conn_tab_size); |
1da177e4 LT |
2699 | if (copy_to_user(user, buf, strlen(buf)+1) != 0) { |
2700 | ret = -EFAULT; | |
2701 | goto out; | |
2702 | } | |
2703 | *len = strlen(buf)+1; | |
2704 | } | |
2705 | break; | |
2706 | ||
2707 | case IP_VS_SO_GET_INFO: | |
2708 | { | |
2709 | struct ip_vs_getinfo info; | |
2710 | info.version = IP_VS_VERSION_CODE; | |
6f7edb48 | 2711 | info.size = ip_vs_conn_tab_size; |
a0840e2e | 2712 | info.num_services = ipvs->num_services; |
1da177e4 LT |
2713 | if (copy_to_user(user, &info, sizeof(info)) != 0) |
2714 | ret = -EFAULT; | |
2715 | } | |
2716 | break; | |
2717 | ||
2718 | case IP_VS_SO_GET_SERVICES: | |
2719 | { | |
2720 | struct ip_vs_get_services *get; | |
2721 | int size; | |
2722 | ||
2723 | get = (struct ip_vs_get_services *)arg; | |
2724 | size = sizeof(*get) + | |
2725 | sizeof(struct ip_vs_service_entry) * get->num_services; | |
2726 | if (*len != size) { | |
1e3e238e | 2727 | pr_err("length: %u != %u\n", *len, size); |
1da177e4 LT |
2728 | ret = -EINVAL; |
2729 | goto out; | |
2730 | } | |
fc723250 | 2731 | ret = __ip_vs_get_service_entries(net, get, user); |
1da177e4 LT |
2732 | } |
2733 | break; | |
2734 | ||
2735 | case IP_VS_SO_GET_SERVICE: | |
2736 | { | |
2737 | struct ip_vs_service_entry *entry; | |
2738 | struct ip_vs_service *svc; | |
b18610de | 2739 | union nf_inet_addr addr; |
1da177e4 LT |
2740 | |
2741 | entry = (struct ip_vs_service_entry *)arg; | |
b18610de | 2742 | addr.ip = entry->addr; |
1da177e4 | 2743 | if (entry->fwmark) |
fc723250 | 2744 | svc = __ip_vs_svc_fwm_find(net, AF_INET, entry->fwmark); |
1da177e4 | 2745 | else |
fc723250 HS |
2746 | svc = __ip_vs_service_find(net, AF_INET, |
2747 | entry->protocol, &addr, | |
2748 | entry->port); | |
1da177e4 LT |
2749 | if (svc) { |
2750 | ip_vs_copy_service(entry, svc); | |
2751 | if (copy_to_user(user, entry, sizeof(*entry)) != 0) | |
2752 | ret = -EFAULT; | |
1da177e4 LT |
2753 | } else |
2754 | ret = -ESRCH; | |
2755 | } | |
2756 | break; | |
2757 | ||
2758 | case IP_VS_SO_GET_DESTS: | |
2759 | { | |
2760 | struct ip_vs_get_dests *get; | |
2761 | int size; | |
2762 | ||
2763 | get = (struct ip_vs_get_dests *)arg; | |
2764 | size = sizeof(*get) + | |
2765 | sizeof(struct ip_vs_dest_entry) * get->num_dests; | |
2766 | if (*len != size) { | |
1e3e238e | 2767 | pr_err("length: %u != %u\n", *len, size); |
1da177e4 LT |
2768 | ret = -EINVAL; |
2769 | goto out; | |
2770 | } | |
fc723250 | 2771 | ret = __ip_vs_get_dest_entries(net, get, user); |
1da177e4 LT |
2772 | } |
2773 | break; | |
2774 | ||
2775 | case IP_VS_SO_GET_TIMEOUT: | |
2776 | { | |
2777 | struct ip_vs_timeout_user t; | |
2778 | ||
9330419d | 2779 | __ip_vs_get_timeouts(net, &t); |
1da177e4 LT |
2780 | if (copy_to_user(user, &t, sizeof(t)) != 0) |
2781 | ret = -EFAULT; | |
2782 | } | |
2783 | break; | |
2784 | ||
1da177e4 LT |
2785 | default: |
2786 | ret = -EINVAL; | |
2787 | } | |
2788 | ||
552ad65a | 2789 | out: |
14cc3e2b | 2790 | mutex_unlock(&__ip_vs_mutex); |
1da177e4 LT |
2791 | return ret; |
2792 | } | |
2793 | ||
2794 | ||
2795 | static struct nf_sockopt_ops ip_vs_sockopts = { | |
2796 | .pf = PF_INET, | |
2797 | .set_optmin = IP_VS_BASE_CTL, | |
2798 | .set_optmax = IP_VS_SO_SET_MAX+1, | |
2799 | .set = do_ip_vs_set_ctl, | |
2800 | .get_optmin = IP_VS_BASE_CTL, | |
2801 | .get_optmax = IP_VS_SO_GET_MAX+1, | |
2802 | .get = do_ip_vs_get_ctl, | |
16fcec35 | 2803 | .owner = THIS_MODULE, |
1da177e4 LT |
2804 | }; |
2805 | ||
9a812198 JV |
2806 | /* |
2807 | * Generic Netlink interface | |
2808 | */ | |
2809 | ||
2810 | /* IPVS genetlink family */ | |
2811 | static struct genl_family ip_vs_genl_family = { | |
2812 | .id = GENL_ID_GENERATE, | |
2813 | .hdrsize = 0, | |
2814 | .name = IPVS_GENL_NAME, | |
2815 | .version = IPVS_GENL_VERSION, | |
2816 | .maxattr = IPVS_CMD_MAX, | |
c6d2d445 | 2817 | .netnsok = true, /* Make ipvsadm to work on netns */ |
9a812198 JV |
2818 | }; |
2819 | ||
2820 | /* Policy used for first-level command attributes */ | |
2821 | static const struct nla_policy ip_vs_cmd_policy[IPVS_CMD_ATTR_MAX + 1] = { | |
2822 | [IPVS_CMD_ATTR_SERVICE] = { .type = NLA_NESTED }, | |
2823 | [IPVS_CMD_ATTR_DEST] = { .type = NLA_NESTED }, | |
2824 | [IPVS_CMD_ATTR_DAEMON] = { .type = NLA_NESTED }, | |
2825 | [IPVS_CMD_ATTR_TIMEOUT_TCP] = { .type = NLA_U32 }, | |
2826 | [IPVS_CMD_ATTR_TIMEOUT_TCP_FIN] = { .type = NLA_U32 }, | |
2827 | [IPVS_CMD_ATTR_TIMEOUT_UDP] = { .type = NLA_U32 }, | |
2828 | }; | |
2829 | ||
2830 | /* Policy used for attributes in nested attribute IPVS_CMD_ATTR_DAEMON */ | |
2831 | static const struct nla_policy ip_vs_daemon_policy[IPVS_DAEMON_ATTR_MAX + 1] = { | |
2832 | [IPVS_DAEMON_ATTR_STATE] = { .type = NLA_U32 }, | |
2833 | [IPVS_DAEMON_ATTR_MCAST_IFN] = { .type = NLA_NUL_STRING, | |
2834 | .len = IP_VS_IFNAME_MAXLEN }, | |
2835 | [IPVS_DAEMON_ATTR_SYNC_ID] = { .type = NLA_U32 }, | |
2836 | }; | |
2837 | ||
2838 | /* Policy used for attributes in nested attribute IPVS_CMD_ATTR_SERVICE */ | |
2839 | static const struct nla_policy ip_vs_svc_policy[IPVS_SVC_ATTR_MAX + 1] = { | |
2840 | [IPVS_SVC_ATTR_AF] = { .type = NLA_U16 }, | |
2841 | [IPVS_SVC_ATTR_PROTOCOL] = { .type = NLA_U16 }, | |
2842 | [IPVS_SVC_ATTR_ADDR] = { .type = NLA_BINARY, | |
2843 | .len = sizeof(union nf_inet_addr) }, | |
2844 | [IPVS_SVC_ATTR_PORT] = { .type = NLA_U16 }, | |
2845 | [IPVS_SVC_ATTR_FWMARK] = { .type = NLA_U32 }, | |
2846 | [IPVS_SVC_ATTR_SCHED_NAME] = { .type = NLA_NUL_STRING, | |
2847 | .len = IP_VS_SCHEDNAME_MAXLEN }, | |
0d1e71b0 SH |
2848 | [IPVS_SVC_ATTR_PE_NAME] = { .type = NLA_NUL_STRING, |
2849 | .len = IP_VS_PENAME_MAXLEN }, | |
9a812198 JV |
2850 | [IPVS_SVC_ATTR_FLAGS] = { .type = NLA_BINARY, |
2851 | .len = sizeof(struct ip_vs_flags) }, | |
2852 | [IPVS_SVC_ATTR_TIMEOUT] = { .type = NLA_U32 }, | |
2853 | [IPVS_SVC_ATTR_NETMASK] = { .type = NLA_U32 }, | |
2854 | [IPVS_SVC_ATTR_STATS] = { .type = NLA_NESTED }, | |
2855 | }; | |
2856 | ||
2857 | /* Policy used for attributes in nested attribute IPVS_CMD_ATTR_DEST */ | |
2858 | static const struct nla_policy ip_vs_dest_policy[IPVS_DEST_ATTR_MAX + 1] = { | |
2859 | [IPVS_DEST_ATTR_ADDR] = { .type = NLA_BINARY, | |
2860 | .len = sizeof(union nf_inet_addr) }, | |
2861 | [IPVS_DEST_ATTR_PORT] = { .type = NLA_U16 }, | |
2862 | [IPVS_DEST_ATTR_FWD_METHOD] = { .type = NLA_U32 }, | |
2863 | [IPVS_DEST_ATTR_WEIGHT] = { .type = NLA_U32 }, | |
2864 | [IPVS_DEST_ATTR_U_THRESH] = { .type = NLA_U32 }, | |
2865 | [IPVS_DEST_ATTR_L_THRESH] = { .type = NLA_U32 }, | |
2866 | [IPVS_DEST_ATTR_ACTIVE_CONNS] = { .type = NLA_U32 }, | |
2867 | [IPVS_DEST_ATTR_INACT_CONNS] = { .type = NLA_U32 }, | |
2868 | [IPVS_DEST_ATTR_PERSIST_CONNS] = { .type = NLA_U32 }, | |
2869 | [IPVS_DEST_ATTR_STATS] = { .type = NLA_NESTED }, | |
2870 | }; | |
2871 | ||
2872 | static int ip_vs_genl_fill_stats(struct sk_buff *skb, int container_type, | |
2873 | struct ip_vs_stats *stats) | |
2874 | { | |
55a3d4e1 | 2875 | struct ip_vs_stats_user ustats; |
9a812198 JV |
2876 | struct nlattr *nl_stats = nla_nest_start(skb, container_type); |
2877 | if (!nl_stats) | |
2878 | return -EMSGSIZE; | |
2879 | ||
55a3d4e1 | 2880 | ip_vs_copy_stats(&ustats, stats); |
9a812198 | 2881 | |
969e8e25 DM |
2882 | if (nla_put_u32(skb, IPVS_STATS_ATTR_CONNS, ustats.conns) || |
2883 | nla_put_u32(skb, IPVS_STATS_ATTR_INPKTS, ustats.inpkts) || | |
2884 | nla_put_u32(skb, IPVS_STATS_ATTR_OUTPKTS, ustats.outpkts) || | |
2885 | nla_put_u64(skb, IPVS_STATS_ATTR_INBYTES, ustats.inbytes) || | |
2886 | nla_put_u64(skb, IPVS_STATS_ATTR_OUTBYTES, ustats.outbytes) || | |
2887 | nla_put_u32(skb, IPVS_STATS_ATTR_CPS, ustats.cps) || | |
2888 | nla_put_u32(skb, IPVS_STATS_ATTR_INPPS, ustats.inpps) || | |
2889 | nla_put_u32(skb, IPVS_STATS_ATTR_OUTPPS, ustats.outpps) || | |
2890 | nla_put_u32(skb, IPVS_STATS_ATTR_INBPS, ustats.inbps) || | |
2891 | nla_put_u32(skb, IPVS_STATS_ATTR_OUTBPS, ustats.outbps)) | |
2892 | goto nla_put_failure; | |
9a812198 JV |
2893 | nla_nest_end(skb, nl_stats); |
2894 | ||
2895 | return 0; | |
2896 | ||
2897 | nla_put_failure: | |
9a812198 JV |
2898 | nla_nest_cancel(skb, nl_stats); |
2899 | return -EMSGSIZE; | |
2900 | } | |
2901 | ||
2902 | static int ip_vs_genl_fill_service(struct sk_buff *skb, | |
2903 | struct ip_vs_service *svc) | |
2904 | { | |
2905 | struct nlattr *nl_service; | |
2906 | struct ip_vs_flags flags = { .flags = svc->flags, | |
2907 | .mask = ~0 }; | |
2908 | ||
2909 | nl_service = nla_nest_start(skb, IPVS_CMD_ATTR_SERVICE); | |
2910 | if (!nl_service) | |
2911 | return -EMSGSIZE; | |
2912 | ||
969e8e25 DM |
2913 | if (nla_put_u16(skb, IPVS_SVC_ATTR_AF, svc->af)) |
2914 | goto nla_put_failure; | |
9a812198 | 2915 | if (svc->fwmark) { |
969e8e25 DM |
2916 | if (nla_put_u32(skb, IPVS_SVC_ATTR_FWMARK, svc->fwmark)) |
2917 | goto nla_put_failure; | |
9a812198 | 2918 | } else { |
969e8e25 DM |
2919 | if (nla_put_u16(skb, IPVS_SVC_ATTR_PROTOCOL, svc->protocol) || |
2920 | nla_put(skb, IPVS_SVC_ATTR_ADDR, sizeof(svc->addr), &svc->addr) || | |
2921 | nla_put_u16(skb, IPVS_SVC_ATTR_PORT, svc->port)) | |
2922 | goto nla_put_failure; | |
9a812198 JV |
2923 | } |
2924 | ||
969e8e25 DM |
2925 | if (nla_put_string(skb, IPVS_SVC_ATTR_SCHED_NAME, svc->scheduler->name) || |
2926 | (svc->pe && | |
2927 | nla_put_string(skb, IPVS_SVC_ATTR_PE_NAME, svc->pe->name)) || | |
2928 | nla_put(skb, IPVS_SVC_ATTR_FLAGS, sizeof(flags), &flags) || | |
2929 | nla_put_u32(skb, IPVS_SVC_ATTR_TIMEOUT, svc->timeout / HZ) || | |
2930 | nla_put_u32(skb, IPVS_SVC_ATTR_NETMASK, svc->netmask)) | |
2931 | goto nla_put_failure; | |
9a812198 JV |
2932 | if (ip_vs_genl_fill_stats(skb, IPVS_SVC_ATTR_STATS, &svc->stats)) |
2933 | goto nla_put_failure; | |
2934 | ||
2935 | nla_nest_end(skb, nl_service); | |
2936 | ||
2937 | return 0; | |
2938 | ||
2939 | nla_put_failure: | |
2940 | nla_nest_cancel(skb, nl_service); | |
2941 | return -EMSGSIZE; | |
2942 | } | |
2943 | ||
2944 | static int ip_vs_genl_dump_service(struct sk_buff *skb, | |
2945 | struct ip_vs_service *svc, | |
2946 | struct netlink_callback *cb) | |
2947 | { | |
2948 | void *hdr; | |
2949 | ||
15e47304 | 2950 | hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, |
9a812198 JV |
2951 | &ip_vs_genl_family, NLM_F_MULTI, |
2952 | IPVS_CMD_NEW_SERVICE); | |
2953 | if (!hdr) | |
2954 | return -EMSGSIZE; | |
2955 | ||
2956 | if (ip_vs_genl_fill_service(skb, svc) < 0) | |
2957 | goto nla_put_failure; | |
2958 | ||
2959 | return genlmsg_end(skb, hdr); | |
2960 | ||
2961 | nla_put_failure: | |
2962 | genlmsg_cancel(skb, hdr); | |
2963 | return -EMSGSIZE; | |
2964 | } | |
2965 | ||
2966 | static int ip_vs_genl_dump_services(struct sk_buff *skb, | |
2967 | struct netlink_callback *cb) | |
2968 | { | |
2969 | int idx = 0, i; | |
2970 | int start = cb->args[0]; | |
2971 | struct ip_vs_service *svc; | |
fc723250 | 2972 | struct net *net = skb_sknet(skb); |
9a812198 JV |
2973 | |
2974 | mutex_lock(&__ip_vs_mutex); | |
2975 | for (i = 0; i < IP_VS_SVC_TAB_SIZE; i++) { | |
2976 | list_for_each_entry(svc, &ip_vs_svc_table[i], s_list) { | |
fc723250 | 2977 | if (++idx <= start || !net_eq(svc->net, net)) |
9a812198 JV |
2978 | continue; |
2979 | if (ip_vs_genl_dump_service(skb, svc, cb) < 0) { | |
2980 | idx--; | |
2981 | goto nla_put_failure; | |
2982 | } | |
2983 | } | |
2984 | } | |
2985 | ||
2986 | for (i = 0; i < IP_VS_SVC_TAB_SIZE; i++) { | |
2987 | list_for_each_entry(svc, &ip_vs_svc_fwm_table[i], f_list) { | |
fc723250 | 2988 | if (++idx <= start || !net_eq(svc->net, net)) |
9a812198 JV |
2989 | continue; |
2990 | if (ip_vs_genl_dump_service(skb, svc, cb) < 0) { | |
2991 | idx--; | |
2992 | goto nla_put_failure; | |
2993 | } | |
2994 | } | |
2995 | } | |
2996 | ||
2997 | nla_put_failure: | |
2998 | mutex_unlock(&__ip_vs_mutex); | |
2999 | cb->args[0] = idx; | |
3000 | ||
3001 | return skb->len; | |
3002 | } | |
3003 | ||
fc723250 HS |
3004 | static int ip_vs_genl_parse_service(struct net *net, |
3005 | struct ip_vs_service_user_kern *usvc, | |
26c15cfd JA |
3006 | struct nlattr *nla, int full_entry, |
3007 | struct ip_vs_service **ret_svc) | |
9a812198 JV |
3008 | { |
3009 | struct nlattr *attrs[IPVS_SVC_ATTR_MAX + 1]; | |
3010 | struct nlattr *nla_af, *nla_port, *nla_fwmark, *nla_protocol, *nla_addr; | |
26c15cfd | 3011 | struct ip_vs_service *svc; |
9a812198 JV |
3012 | |
3013 | /* Parse mandatory identifying service fields first */ | |
3014 | if (nla == NULL || | |
3015 | nla_parse_nested(attrs, IPVS_SVC_ATTR_MAX, nla, ip_vs_svc_policy)) | |
3016 | return -EINVAL; | |
3017 | ||
3018 | nla_af = attrs[IPVS_SVC_ATTR_AF]; | |
3019 | nla_protocol = attrs[IPVS_SVC_ATTR_PROTOCOL]; | |
3020 | nla_addr = attrs[IPVS_SVC_ATTR_ADDR]; | |
3021 | nla_port = attrs[IPVS_SVC_ATTR_PORT]; | |
3022 | nla_fwmark = attrs[IPVS_SVC_ATTR_FWMARK]; | |
3023 | ||
3024 | if (!(nla_af && (nla_fwmark || (nla_port && nla_protocol && nla_addr)))) | |
3025 | return -EINVAL; | |
3026 | ||
258c8893 SH |
3027 | memset(usvc, 0, sizeof(*usvc)); |
3028 | ||
c860c6b1 | 3029 | usvc->af = nla_get_u16(nla_af); |
f94fd041 JV |
3030 | #ifdef CONFIG_IP_VS_IPV6 |
3031 | if (usvc->af != AF_INET && usvc->af != AF_INET6) | |
3032 | #else | |
3033 | if (usvc->af != AF_INET) | |
3034 | #endif | |
9a812198 JV |
3035 | return -EAFNOSUPPORT; |
3036 | ||
3037 | if (nla_fwmark) { | |
3038 | usvc->protocol = IPPROTO_TCP; | |
3039 | usvc->fwmark = nla_get_u32(nla_fwmark); | |
3040 | } else { | |
3041 | usvc->protocol = nla_get_u16(nla_protocol); | |
3042 | nla_memcpy(&usvc->addr, nla_addr, sizeof(usvc->addr)); | |
3043 | usvc->port = nla_get_u16(nla_port); | |
3044 | usvc->fwmark = 0; | |
3045 | } | |
3046 | ||
26c15cfd | 3047 | if (usvc->fwmark) |
fc723250 | 3048 | svc = __ip_vs_svc_fwm_find(net, usvc->af, usvc->fwmark); |
26c15cfd | 3049 | else |
fc723250 | 3050 | svc = __ip_vs_service_find(net, usvc->af, usvc->protocol, |
26c15cfd JA |
3051 | &usvc->addr, usvc->port); |
3052 | *ret_svc = svc; | |
3053 | ||
9a812198 JV |
3054 | /* If a full entry was requested, check for the additional fields */ |
3055 | if (full_entry) { | |
0d1e71b0 | 3056 | struct nlattr *nla_sched, *nla_flags, *nla_pe, *nla_timeout, |
9a812198 JV |
3057 | *nla_netmask; |
3058 | struct ip_vs_flags flags; | |
9a812198 JV |
3059 | |
3060 | nla_sched = attrs[IPVS_SVC_ATTR_SCHED_NAME]; | |
0d1e71b0 | 3061 | nla_pe = attrs[IPVS_SVC_ATTR_PE_NAME]; |
9a812198 JV |
3062 | nla_flags = attrs[IPVS_SVC_ATTR_FLAGS]; |
3063 | nla_timeout = attrs[IPVS_SVC_ATTR_TIMEOUT]; | |
3064 | nla_netmask = attrs[IPVS_SVC_ATTR_NETMASK]; | |
3065 | ||
3066 | if (!(nla_sched && nla_flags && nla_timeout && nla_netmask)) | |
3067 | return -EINVAL; | |
3068 | ||
3069 | nla_memcpy(&flags, nla_flags, sizeof(flags)); | |
3070 | ||
3071 | /* prefill flags from service if it already exists */ | |
26c15cfd | 3072 | if (svc) |
9a812198 | 3073 | usvc->flags = svc->flags; |
9a812198 JV |
3074 | |
3075 | /* set new flags from userland */ | |
3076 | usvc->flags = (usvc->flags & ~flags.mask) | | |
3077 | (flags.flags & flags.mask); | |
c860c6b1 | 3078 | usvc->sched_name = nla_data(nla_sched); |
0d1e71b0 | 3079 | usvc->pe_name = nla_pe ? nla_data(nla_pe) : NULL; |
9a812198 JV |
3080 | usvc->timeout = nla_get_u32(nla_timeout); |
3081 | usvc->netmask = nla_get_u32(nla_netmask); | |
3082 | } | |
3083 | ||
3084 | return 0; | |
3085 | } | |
3086 | ||
fc723250 HS |
3087 | static struct ip_vs_service *ip_vs_genl_find_service(struct net *net, |
3088 | struct nlattr *nla) | |
9a812198 | 3089 | { |
c860c6b1 | 3090 | struct ip_vs_service_user_kern usvc; |
26c15cfd | 3091 | struct ip_vs_service *svc; |
9a812198 JV |
3092 | int ret; |
3093 | ||
fc723250 | 3094 | ret = ip_vs_genl_parse_service(net, &usvc, nla, 0, &svc); |
26c15cfd | 3095 | return ret ? ERR_PTR(ret) : svc; |
9a812198 JV |
3096 | } |
3097 | ||
3098 | static int ip_vs_genl_fill_dest(struct sk_buff *skb, struct ip_vs_dest *dest) | |
3099 | { | |
3100 | struct nlattr *nl_dest; | |
3101 | ||
3102 | nl_dest = nla_nest_start(skb, IPVS_CMD_ATTR_DEST); | |
3103 | if (!nl_dest) | |
3104 | return -EMSGSIZE; | |
3105 | ||
969e8e25 DM |
3106 | if (nla_put(skb, IPVS_DEST_ATTR_ADDR, sizeof(dest->addr), &dest->addr) || |
3107 | nla_put_u16(skb, IPVS_DEST_ATTR_PORT, dest->port) || | |
3108 | nla_put_u32(skb, IPVS_DEST_ATTR_FWD_METHOD, | |
3109 | (atomic_read(&dest->conn_flags) & | |
3110 | IP_VS_CONN_F_FWD_MASK)) || | |
3111 | nla_put_u32(skb, IPVS_DEST_ATTR_WEIGHT, | |
3112 | atomic_read(&dest->weight)) || | |
3113 | nla_put_u32(skb, IPVS_DEST_ATTR_U_THRESH, dest->u_threshold) || | |
3114 | nla_put_u32(skb, IPVS_DEST_ATTR_L_THRESH, dest->l_threshold) || | |
3115 | nla_put_u32(skb, IPVS_DEST_ATTR_ACTIVE_CONNS, | |
3116 | atomic_read(&dest->activeconns)) || | |
3117 | nla_put_u32(skb, IPVS_DEST_ATTR_INACT_CONNS, | |
3118 | atomic_read(&dest->inactconns)) || | |
3119 | nla_put_u32(skb, IPVS_DEST_ATTR_PERSIST_CONNS, | |
3120 | atomic_read(&dest->persistconns))) | |
3121 | goto nla_put_failure; | |
9a812198 JV |
3122 | if (ip_vs_genl_fill_stats(skb, IPVS_DEST_ATTR_STATS, &dest->stats)) |
3123 | goto nla_put_failure; | |
3124 | ||
3125 | nla_nest_end(skb, nl_dest); | |
3126 | ||
3127 | return 0; | |
3128 | ||
3129 | nla_put_failure: | |
3130 | nla_nest_cancel(skb, nl_dest); | |
3131 | return -EMSGSIZE; | |
3132 | } | |
3133 | ||
3134 | static int ip_vs_genl_dump_dest(struct sk_buff *skb, struct ip_vs_dest *dest, | |
3135 | struct netlink_callback *cb) | |
3136 | { | |
3137 | void *hdr; | |
3138 | ||
15e47304 | 3139 | hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, |
9a812198 JV |
3140 | &ip_vs_genl_family, NLM_F_MULTI, |
3141 | IPVS_CMD_NEW_DEST); | |
3142 | if (!hdr) | |
3143 | return -EMSGSIZE; | |
3144 | ||
3145 | if (ip_vs_genl_fill_dest(skb, dest) < 0) | |
3146 | goto nla_put_failure; | |
3147 | ||
3148 | return genlmsg_end(skb, hdr); | |
3149 | ||
3150 | nla_put_failure: | |
3151 | genlmsg_cancel(skb, hdr); | |
3152 | return -EMSGSIZE; | |
3153 | } | |
3154 | ||
3155 | static int ip_vs_genl_dump_dests(struct sk_buff *skb, | |
3156 | struct netlink_callback *cb) | |
3157 | { | |
3158 | int idx = 0; | |
3159 | int start = cb->args[0]; | |
3160 | struct ip_vs_service *svc; | |
3161 | struct ip_vs_dest *dest; | |
3162 | struct nlattr *attrs[IPVS_CMD_ATTR_MAX + 1]; | |
a0840e2e | 3163 | struct net *net = skb_sknet(skb); |
9a812198 JV |
3164 | |
3165 | mutex_lock(&__ip_vs_mutex); | |
3166 | ||
3167 | /* Try to find the service for which to dump destinations */ | |
3168 | if (nlmsg_parse(cb->nlh, GENL_HDRLEN, attrs, | |
3169 | IPVS_CMD_ATTR_MAX, ip_vs_cmd_policy)) | |
3170 | goto out_err; | |
3171 | ||
a0840e2e | 3172 | |
fc723250 | 3173 | svc = ip_vs_genl_find_service(net, attrs[IPVS_CMD_ATTR_SERVICE]); |
9a812198 JV |
3174 | if (IS_ERR(svc) || svc == NULL) |
3175 | goto out_err; | |
3176 | ||
3177 | /* Dump the destinations */ | |
3178 | list_for_each_entry(dest, &svc->destinations, n_list) { | |
3179 | if (++idx <= start) | |
3180 | continue; | |
3181 | if (ip_vs_genl_dump_dest(skb, dest, cb) < 0) { | |
3182 | idx--; | |
3183 | goto nla_put_failure; | |
3184 | } | |
3185 | } | |
3186 | ||
3187 | nla_put_failure: | |
3188 | cb->args[0] = idx; | |
9a812198 JV |
3189 | |
3190 | out_err: | |
3191 | mutex_unlock(&__ip_vs_mutex); | |
3192 | ||
3193 | return skb->len; | |
3194 | } | |
3195 | ||
c860c6b1 | 3196 | static int ip_vs_genl_parse_dest(struct ip_vs_dest_user_kern *udest, |
9a812198 JV |
3197 | struct nlattr *nla, int full_entry) |
3198 | { | |
3199 | struct nlattr *attrs[IPVS_DEST_ATTR_MAX + 1]; | |
3200 | struct nlattr *nla_addr, *nla_port; | |
3201 | ||
3202 | /* Parse mandatory identifying destination fields first */ | |
3203 | if (nla == NULL || | |
3204 | nla_parse_nested(attrs, IPVS_DEST_ATTR_MAX, nla, ip_vs_dest_policy)) | |
3205 | return -EINVAL; | |
3206 | ||
3207 | nla_addr = attrs[IPVS_DEST_ATTR_ADDR]; | |
3208 | nla_port = attrs[IPVS_DEST_ATTR_PORT]; | |
3209 | ||
3210 | if (!(nla_addr && nla_port)) | |
3211 | return -EINVAL; | |
3212 | ||
258c8893 SH |
3213 | memset(udest, 0, sizeof(*udest)); |
3214 | ||
9a812198 JV |
3215 | nla_memcpy(&udest->addr, nla_addr, sizeof(udest->addr)); |
3216 | udest->port = nla_get_u16(nla_port); | |
3217 | ||
3218 | /* If a full entry was requested, check for the additional fields */ | |
3219 | if (full_entry) { | |
3220 | struct nlattr *nla_fwd, *nla_weight, *nla_u_thresh, | |
3221 | *nla_l_thresh; | |
3222 | ||
3223 | nla_fwd = attrs[IPVS_DEST_ATTR_FWD_METHOD]; | |
3224 | nla_weight = attrs[IPVS_DEST_ATTR_WEIGHT]; | |
3225 | nla_u_thresh = attrs[IPVS_DEST_ATTR_U_THRESH]; | |
3226 | nla_l_thresh = attrs[IPVS_DEST_ATTR_L_THRESH]; | |
3227 | ||
3228 | if (!(nla_fwd && nla_weight && nla_u_thresh && nla_l_thresh)) | |
3229 | return -EINVAL; | |
3230 | ||
3231 | udest->conn_flags = nla_get_u32(nla_fwd) | |
3232 | & IP_VS_CONN_F_FWD_MASK; | |
3233 | udest->weight = nla_get_u32(nla_weight); | |
3234 | udest->u_threshold = nla_get_u32(nla_u_thresh); | |
3235 | udest->l_threshold = nla_get_u32(nla_l_thresh); | |
3236 | } | |
3237 | ||
3238 | return 0; | |
3239 | } | |
3240 | ||
3241 | static int ip_vs_genl_fill_daemon(struct sk_buff *skb, __be32 state, | |
3242 | const char *mcast_ifn, __be32 syncid) | |
3243 | { | |
3244 | struct nlattr *nl_daemon; | |
3245 | ||
3246 | nl_daemon = nla_nest_start(skb, IPVS_CMD_ATTR_DAEMON); | |
3247 | if (!nl_daemon) | |
3248 | return -EMSGSIZE; | |
3249 | ||
969e8e25 DM |
3250 | if (nla_put_u32(skb, IPVS_DAEMON_ATTR_STATE, state) || |
3251 | nla_put_string(skb, IPVS_DAEMON_ATTR_MCAST_IFN, mcast_ifn) || | |
3252 | nla_put_u32(skb, IPVS_DAEMON_ATTR_SYNC_ID, syncid)) | |
3253 | goto nla_put_failure; | |
9a812198 JV |
3254 | nla_nest_end(skb, nl_daemon); |
3255 | ||
3256 | return 0; | |
3257 | ||
3258 | nla_put_failure: | |
3259 | nla_nest_cancel(skb, nl_daemon); | |
3260 | return -EMSGSIZE; | |
3261 | } | |
3262 | ||
3263 | static int ip_vs_genl_dump_daemon(struct sk_buff *skb, __be32 state, | |
3264 | const char *mcast_ifn, __be32 syncid, | |
3265 | struct netlink_callback *cb) | |
3266 | { | |
3267 | void *hdr; | |
15e47304 | 3268 | hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, |
9a812198 JV |
3269 | &ip_vs_genl_family, NLM_F_MULTI, |
3270 | IPVS_CMD_NEW_DAEMON); | |
3271 | if (!hdr) | |
3272 | return -EMSGSIZE; | |
3273 | ||
3274 | if (ip_vs_genl_fill_daemon(skb, state, mcast_ifn, syncid)) | |
3275 | goto nla_put_failure; | |
3276 | ||
3277 | return genlmsg_end(skb, hdr); | |
3278 | ||
3279 | nla_put_failure: | |
3280 | genlmsg_cancel(skb, hdr); | |
3281 | return -EMSGSIZE; | |
3282 | } | |
3283 | ||
3284 | static int ip_vs_genl_dump_daemons(struct sk_buff *skb, | |
3285 | struct netlink_callback *cb) | |
3286 | { | |
a09d1977 | 3287 | struct net *net = skb_sknet(skb); |
f131315f HS |
3288 | struct netns_ipvs *ipvs = net_ipvs(net); |
3289 | ||
ae1d48b2 | 3290 | mutex_lock(&ipvs->sync_mutex); |
f131315f | 3291 | if ((ipvs->sync_state & IP_VS_STATE_MASTER) && !cb->args[0]) { |
9a812198 | 3292 | if (ip_vs_genl_dump_daemon(skb, IP_VS_STATE_MASTER, |
f131315f HS |
3293 | ipvs->master_mcast_ifn, |
3294 | ipvs->master_syncid, cb) < 0) | |
9a812198 JV |
3295 | goto nla_put_failure; |
3296 | ||
3297 | cb->args[0] = 1; | |
3298 | } | |
3299 | ||
f131315f | 3300 | if ((ipvs->sync_state & IP_VS_STATE_BACKUP) && !cb->args[1]) { |
9a812198 | 3301 | if (ip_vs_genl_dump_daemon(skb, IP_VS_STATE_BACKUP, |
f131315f HS |
3302 | ipvs->backup_mcast_ifn, |
3303 | ipvs->backup_syncid, cb) < 0) | |
9a812198 JV |
3304 | goto nla_put_failure; |
3305 | ||
3306 | cb->args[1] = 1; | |
3307 | } | |
3308 | ||
3309 | nla_put_failure: | |
ae1d48b2 | 3310 | mutex_unlock(&ipvs->sync_mutex); |
9a812198 JV |
3311 | |
3312 | return skb->len; | |
3313 | } | |
3314 | ||
f131315f | 3315 | static int ip_vs_genl_new_daemon(struct net *net, struct nlattr **attrs) |
9a812198 JV |
3316 | { |
3317 | if (!(attrs[IPVS_DAEMON_ATTR_STATE] && | |
3318 | attrs[IPVS_DAEMON_ATTR_MCAST_IFN] && | |
3319 | attrs[IPVS_DAEMON_ATTR_SYNC_ID])) | |
3320 | return -EINVAL; | |
3321 | ||
f131315f HS |
3322 | return start_sync_thread(net, |
3323 | nla_get_u32(attrs[IPVS_DAEMON_ATTR_STATE]), | |
9a812198 JV |
3324 | nla_data(attrs[IPVS_DAEMON_ATTR_MCAST_IFN]), |
3325 | nla_get_u32(attrs[IPVS_DAEMON_ATTR_SYNC_ID])); | |
3326 | } | |
3327 | ||
f131315f | 3328 | static int ip_vs_genl_del_daemon(struct net *net, struct nlattr **attrs) |
9a812198 JV |
3329 | { |
3330 | if (!attrs[IPVS_DAEMON_ATTR_STATE]) | |
3331 | return -EINVAL; | |
3332 | ||
f131315f HS |
3333 | return stop_sync_thread(net, |
3334 | nla_get_u32(attrs[IPVS_DAEMON_ATTR_STATE])); | |
9a812198 JV |
3335 | } |
3336 | ||
9330419d | 3337 | static int ip_vs_genl_set_config(struct net *net, struct nlattr **attrs) |
9a812198 JV |
3338 | { |
3339 | struct ip_vs_timeout_user t; | |
3340 | ||
9330419d | 3341 | __ip_vs_get_timeouts(net, &t); |
9a812198 JV |
3342 | |
3343 | if (attrs[IPVS_CMD_ATTR_TIMEOUT_TCP]) | |
3344 | t.tcp_timeout = nla_get_u32(attrs[IPVS_CMD_ATTR_TIMEOUT_TCP]); | |
3345 | ||
3346 | if (attrs[IPVS_CMD_ATTR_TIMEOUT_TCP_FIN]) | |
3347 | t.tcp_fin_timeout = | |
3348 | nla_get_u32(attrs[IPVS_CMD_ATTR_TIMEOUT_TCP_FIN]); | |
3349 | ||
3350 | if (attrs[IPVS_CMD_ATTR_TIMEOUT_UDP]) | |
3351 | t.udp_timeout = nla_get_u32(attrs[IPVS_CMD_ATTR_TIMEOUT_UDP]); | |
3352 | ||
9330419d | 3353 | return ip_vs_set_timeout(net, &t); |
9a812198 JV |
3354 | } |
3355 | ||
ae1d48b2 | 3356 | static int ip_vs_genl_set_daemon(struct sk_buff *skb, struct genl_info *info) |
9a812198 | 3357 | { |
9a812198 | 3358 | int ret = 0, cmd; |
fc723250 | 3359 | struct net *net; |
a0840e2e | 3360 | struct netns_ipvs *ipvs; |
9a812198 | 3361 | |
fc723250 | 3362 | net = skb_sknet(skb); |
a0840e2e | 3363 | ipvs = net_ipvs(net); |
9a812198 JV |
3364 | cmd = info->genlhdr->cmd; |
3365 | ||
ae1d48b2 | 3366 | if (cmd == IPVS_CMD_NEW_DAEMON || cmd == IPVS_CMD_DEL_DAEMON) { |
9a812198 JV |
3367 | struct nlattr *daemon_attrs[IPVS_DAEMON_ATTR_MAX + 1]; |
3368 | ||
ae1d48b2 | 3369 | mutex_lock(&ipvs->sync_mutex); |
9a812198 JV |
3370 | if (!info->attrs[IPVS_CMD_ATTR_DAEMON] || |
3371 | nla_parse_nested(daemon_attrs, IPVS_DAEMON_ATTR_MAX, | |
3372 | info->attrs[IPVS_CMD_ATTR_DAEMON], | |
3373 | ip_vs_daemon_policy)) { | |
3374 | ret = -EINVAL; | |
3375 | goto out; | |
3376 | } | |
3377 | ||
3378 | if (cmd == IPVS_CMD_NEW_DAEMON) | |
f131315f | 3379 | ret = ip_vs_genl_new_daemon(net, daemon_attrs); |
9a812198 | 3380 | else |
f131315f | 3381 | ret = ip_vs_genl_del_daemon(net, daemon_attrs); |
ae1d48b2 HS |
3382 | out: |
3383 | mutex_unlock(&ipvs->sync_mutex); | |
3384 | } | |
3385 | return ret; | |
3386 | } | |
3387 | ||
3388 | static int ip_vs_genl_set_cmd(struct sk_buff *skb, struct genl_info *info) | |
3389 | { | |
3390 | struct ip_vs_service *svc = NULL; | |
3391 | struct ip_vs_service_user_kern usvc; | |
3392 | struct ip_vs_dest_user_kern udest; | |
3393 | int ret = 0, cmd; | |
3394 | int need_full_svc = 0, need_full_dest = 0; | |
3395 | struct net *net; | |
ae1d48b2 HS |
3396 | |
3397 | net = skb_sknet(skb); | |
ae1d48b2 HS |
3398 | cmd = info->genlhdr->cmd; |
3399 | ||
3400 | mutex_lock(&__ip_vs_mutex); | |
3401 | ||
3402 | if (cmd == IPVS_CMD_FLUSH) { | |
3403 | ret = ip_vs_flush(net); | |
3404 | goto out; | |
3405 | } else if (cmd == IPVS_CMD_SET_CONFIG) { | |
3406 | ret = ip_vs_genl_set_config(net, info->attrs); | |
9a812198 JV |
3407 | goto out; |
3408 | } else if (cmd == IPVS_CMD_ZERO && | |
3409 | !info->attrs[IPVS_CMD_ATTR_SERVICE]) { | |
fc723250 | 3410 | ret = ip_vs_zero_all(net); |
9a812198 JV |
3411 | goto out; |
3412 | } | |
3413 | ||
3414 | /* All following commands require a service argument, so check if we | |
3415 | * received a valid one. We need a full service specification when | |
3416 | * adding / editing a service. Only identifying members otherwise. */ | |
3417 | if (cmd == IPVS_CMD_NEW_SERVICE || cmd == IPVS_CMD_SET_SERVICE) | |
3418 | need_full_svc = 1; | |
3419 | ||
fc723250 | 3420 | ret = ip_vs_genl_parse_service(net, &usvc, |
9a812198 | 3421 | info->attrs[IPVS_CMD_ATTR_SERVICE], |
26c15cfd | 3422 | need_full_svc, &svc); |
9a812198 JV |
3423 | if (ret) |
3424 | goto out; | |
3425 | ||
9a812198 JV |
3426 | /* Unless we're adding a new service, the service must already exist */ |
3427 | if ((cmd != IPVS_CMD_NEW_SERVICE) && (svc == NULL)) { | |
3428 | ret = -ESRCH; | |
3429 | goto out; | |
3430 | } | |
3431 | ||
3432 | /* Destination commands require a valid destination argument. For | |
3433 | * adding / editing a destination, we need a full destination | |
3434 | * specification. */ | |
3435 | if (cmd == IPVS_CMD_NEW_DEST || cmd == IPVS_CMD_SET_DEST || | |
3436 | cmd == IPVS_CMD_DEL_DEST) { | |
3437 | if (cmd != IPVS_CMD_DEL_DEST) | |
3438 | need_full_dest = 1; | |
3439 | ||
3440 | ret = ip_vs_genl_parse_dest(&udest, | |
3441 | info->attrs[IPVS_CMD_ATTR_DEST], | |
3442 | need_full_dest); | |
3443 | if (ret) | |
3444 | goto out; | |
3445 | } | |
3446 | ||
3447 | switch (cmd) { | |
3448 | case IPVS_CMD_NEW_SERVICE: | |
3449 | if (svc == NULL) | |
fc723250 | 3450 | ret = ip_vs_add_service(net, &usvc, &svc); |
9a812198 JV |
3451 | else |
3452 | ret = -EEXIST; | |
3453 | break; | |
3454 | case IPVS_CMD_SET_SERVICE: | |
3455 | ret = ip_vs_edit_service(svc, &usvc); | |
3456 | break; | |
3457 | case IPVS_CMD_DEL_SERVICE: | |
3458 | ret = ip_vs_del_service(svc); | |
26c15cfd | 3459 | /* do not use svc, it can be freed */ |
9a812198 JV |
3460 | break; |
3461 | case IPVS_CMD_NEW_DEST: | |
3462 | ret = ip_vs_add_dest(svc, &udest); | |
3463 | break; | |
3464 | case IPVS_CMD_SET_DEST: | |
3465 | ret = ip_vs_edit_dest(svc, &udest); | |
3466 | break; | |
3467 | case IPVS_CMD_DEL_DEST: | |
3468 | ret = ip_vs_del_dest(svc, &udest); | |
3469 | break; | |
3470 | case IPVS_CMD_ZERO: | |
3471 | ret = ip_vs_zero_service(svc); | |
3472 | break; | |
3473 | default: | |
3474 | ret = -EINVAL; | |
3475 | } | |
3476 | ||
3477 | out: | |
9a812198 JV |
3478 | mutex_unlock(&__ip_vs_mutex); |
3479 | ||
3480 | return ret; | |
3481 | } | |
3482 | ||
3483 | static int ip_vs_genl_get_cmd(struct sk_buff *skb, struct genl_info *info) | |
3484 | { | |
3485 | struct sk_buff *msg; | |
3486 | void *reply; | |
3487 | int ret, cmd, reply_cmd; | |
fc723250 | 3488 | struct net *net; |
9a812198 | 3489 | |
fc723250 | 3490 | net = skb_sknet(skb); |
9a812198 JV |
3491 | cmd = info->genlhdr->cmd; |
3492 | ||
3493 | if (cmd == IPVS_CMD_GET_SERVICE) | |
3494 | reply_cmd = IPVS_CMD_NEW_SERVICE; | |
3495 | else if (cmd == IPVS_CMD_GET_INFO) | |
3496 | reply_cmd = IPVS_CMD_SET_INFO; | |
3497 | else if (cmd == IPVS_CMD_GET_CONFIG) | |
3498 | reply_cmd = IPVS_CMD_SET_CONFIG; | |
3499 | else { | |
1e3e238e | 3500 | pr_err("unknown Generic Netlink command\n"); |
9a812198 JV |
3501 | return -EINVAL; |
3502 | } | |
3503 | ||
3504 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
3505 | if (!msg) | |
3506 | return -ENOMEM; | |
3507 | ||
3508 | mutex_lock(&__ip_vs_mutex); | |
3509 | ||
3510 | reply = genlmsg_put_reply(msg, info, &ip_vs_genl_family, 0, reply_cmd); | |
3511 | if (reply == NULL) | |
3512 | goto nla_put_failure; | |
3513 | ||
3514 | switch (cmd) { | |
3515 | case IPVS_CMD_GET_SERVICE: | |
3516 | { | |
3517 | struct ip_vs_service *svc; | |
3518 | ||
fc723250 HS |
3519 | svc = ip_vs_genl_find_service(net, |
3520 | info->attrs[IPVS_CMD_ATTR_SERVICE]); | |
9a812198 JV |
3521 | if (IS_ERR(svc)) { |
3522 | ret = PTR_ERR(svc); | |
3523 | goto out_err; | |
3524 | } else if (svc) { | |
3525 | ret = ip_vs_genl_fill_service(msg, svc); | |
9a812198 JV |
3526 | if (ret) |
3527 | goto nla_put_failure; | |
3528 | } else { | |
3529 | ret = -ESRCH; | |
3530 | goto out_err; | |
3531 | } | |
3532 | ||
3533 | break; | |
3534 | } | |
3535 | ||
3536 | case IPVS_CMD_GET_CONFIG: | |
3537 | { | |
3538 | struct ip_vs_timeout_user t; | |
3539 | ||
9330419d | 3540 | __ip_vs_get_timeouts(net, &t); |
9a812198 | 3541 | #ifdef CONFIG_IP_VS_PROTO_TCP |
969e8e25 DM |
3542 | if (nla_put_u32(msg, IPVS_CMD_ATTR_TIMEOUT_TCP, |
3543 | t.tcp_timeout) || | |
3544 | nla_put_u32(msg, IPVS_CMD_ATTR_TIMEOUT_TCP_FIN, | |
3545 | t.tcp_fin_timeout)) | |
3546 | goto nla_put_failure; | |
9a812198 JV |
3547 | #endif |
3548 | #ifdef CONFIG_IP_VS_PROTO_UDP | |
969e8e25 DM |
3549 | if (nla_put_u32(msg, IPVS_CMD_ATTR_TIMEOUT_UDP, t.udp_timeout)) |
3550 | goto nla_put_failure; | |
9a812198 JV |
3551 | #endif |
3552 | ||
3553 | break; | |
3554 | } | |
3555 | ||
3556 | case IPVS_CMD_GET_INFO: | |
969e8e25 DM |
3557 | if (nla_put_u32(msg, IPVS_INFO_ATTR_VERSION, |
3558 | IP_VS_VERSION_CODE) || | |
3559 | nla_put_u32(msg, IPVS_INFO_ATTR_CONN_TAB_SIZE, | |
3560 | ip_vs_conn_tab_size)) | |
3561 | goto nla_put_failure; | |
9a812198 JV |
3562 | break; |
3563 | } | |
3564 | ||
3565 | genlmsg_end(msg, reply); | |
134e6375 | 3566 | ret = genlmsg_reply(msg, info); |
9a812198 JV |
3567 | goto out; |
3568 | ||
3569 | nla_put_failure: | |
1e3e238e | 3570 | pr_err("not enough space in Netlink message\n"); |
9a812198 JV |
3571 | ret = -EMSGSIZE; |
3572 | ||
3573 | out_err: | |
3574 | nlmsg_free(msg); | |
3575 | out: | |
3576 | mutex_unlock(&__ip_vs_mutex); | |
3577 | ||
3578 | return ret; | |
3579 | } | |
3580 | ||
3581 | ||
3582 | static struct genl_ops ip_vs_genl_ops[] __read_mostly = { | |
3583 | { | |
3584 | .cmd = IPVS_CMD_NEW_SERVICE, | |
3585 | .flags = GENL_ADMIN_PERM, | |
3586 | .policy = ip_vs_cmd_policy, | |
3587 | .doit = ip_vs_genl_set_cmd, | |
3588 | }, | |
3589 | { | |
3590 | .cmd = IPVS_CMD_SET_SERVICE, | |
3591 | .flags = GENL_ADMIN_PERM, | |
3592 | .policy = ip_vs_cmd_policy, | |
3593 | .doit = ip_vs_genl_set_cmd, | |
3594 | }, | |
3595 | { | |
3596 | .cmd = IPVS_CMD_DEL_SERVICE, | |
3597 | .flags = GENL_ADMIN_PERM, | |
3598 | .policy = ip_vs_cmd_policy, | |
3599 | .doit = ip_vs_genl_set_cmd, | |
3600 | }, | |
3601 | { | |
3602 | .cmd = IPVS_CMD_GET_SERVICE, | |
3603 | .flags = GENL_ADMIN_PERM, | |
3604 | .doit = ip_vs_genl_get_cmd, | |
3605 | .dumpit = ip_vs_genl_dump_services, | |
3606 | .policy = ip_vs_cmd_policy, | |
3607 | }, | |
3608 | { | |
3609 | .cmd = IPVS_CMD_NEW_DEST, | |
3610 | .flags = GENL_ADMIN_PERM, | |
3611 | .policy = ip_vs_cmd_policy, | |
3612 | .doit = ip_vs_genl_set_cmd, | |
3613 | }, | |
3614 | { | |
3615 | .cmd = IPVS_CMD_SET_DEST, | |
3616 | .flags = GENL_ADMIN_PERM, | |
3617 | .policy = ip_vs_cmd_policy, | |
3618 | .doit = ip_vs_genl_set_cmd, | |
3619 | }, | |
3620 | { | |
3621 | .cmd = IPVS_CMD_DEL_DEST, | |
3622 | .flags = GENL_ADMIN_PERM, | |
3623 | .policy = ip_vs_cmd_policy, | |
3624 | .doit = ip_vs_genl_set_cmd, | |
3625 | }, | |
3626 | { | |
3627 | .cmd = IPVS_CMD_GET_DEST, | |
3628 | .flags = GENL_ADMIN_PERM, | |
3629 | .policy = ip_vs_cmd_policy, | |
3630 | .dumpit = ip_vs_genl_dump_dests, | |
3631 | }, | |
3632 | { | |
3633 | .cmd = IPVS_CMD_NEW_DAEMON, | |
3634 | .flags = GENL_ADMIN_PERM, | |
3635 | .policy = ip_vs_cmd_policy, | |
ae1d48b2 | 3636 | .doit = ip_vs_genl_set_daemon, |
9a812198 JV |
3637 | }, |
3638 | { | |
3639 | .cmd = IPVS_CMD_DEL_DAEMON, | |
3640 | .flags = GENL_ADMIN_PERM, | |
3641 | .policy = ip_vs_cmd_policy, | |
ae1d48b2 | 3642 | .doit = ip_vs_genl_set_daemon, |
9a812198 JV |
3643 | }, |
3644 | { | |
3645 | .cmd = IPVS_CMD_GET_DAEMON, | |
3646 | .flags = GENL_ADMIN_PERM, | |
3647 | .dumpit = ip_vs_genl_dump_daemons, | |
3648 | }, | |
3649 | { | |
3650 | .cmd = IPVS_CMD_SET_CONFIG, | |
3651 | .flags = GENL_ADMIN_PERM, | |
3652 | .policy = ip_vs_cmd_policy, | |
3653 | .doit = ip_vs_genl_set_cmd, | |
3654 | }, | |
3655 | { | |
3656 | .cmd = IPVS_CMD_GET_CONFIG, | |
3657 | .flags = GENL_ADMIN_PERM, | |
3658 | .doit = ip_vs_genl_get_cmd, | |
3659 | }, | |
3660 | { | |
3661 | .cmd = IPVS_CMD_GET_INFO, | |
3662 | .flags = GENL_ADMIN_PERM, | |
3663 | .doit = ip_vs_genl_get_cmd, | |
3664 | }, | |
3665 | { | |
3666 | .cmd = IPVS_CMD_ZERO, | |
3667 | .flags = GENL_ADMIN_PERM, | |
3668 | .policy = ip_vs_cmd_policy, | |
3669 | .doit = ip_vs_genl_set_cmd, | |
3670 | }, | |
3671 | { | |
3672 | .cmd = IPVS_CMD_FLUSH, | |
3673 | .flags = GENL_ADMIN_PERM, | |
3674 | .doit = ip_vs_genl_set_cmd, | |
3675 | }, | |
3676 | }; | |
3677 | ||
3678 | static int __init ip_vs_genl_register(void) | |
3679 | { | |
8f698d54 MM |
3680 | return genl_register_family_with_ops(&ip_vs_genl_family, |
3681 | ip_vs_genl_ops, ARRAY_SIZE(ip_vs_genl_ops)); | |
9a812198 JV |
3682 | } |
3683 | ||
3684 | static void ip_vs_genl_unregister(void) | |
3685 | { | |
3686 | genl_unregister_family(&ip_vs_genl_family); | |
3687 | } | |
3688 | ||
3689 | /* End of Generic Netlink interface definitions */ | |
3690 | ||
61b1ab45 HS |
3691 | /* |
3692 | * per netns intit/exit func. | |
3693 | */ | |
14e40546 | 3694 | #ifdef CONFIG_SYSCTL |
2b2d2808 | 3695 | static int __net_init ip_vs_control_net_init_sysctl(struct net *net) |
61b1ab45 | 3696 | { |
fc723250 HS |
3697 | int idx; |
3698 | struct netns_ipvs *ipvs = net_ipvs(net); | |
a0840e2e | 3699 | struct ctl_table *tbl; |
fc723250 | 3700 | |
a0840e2e HS |
3701 | atomic_set(&ipvs->dropentry, 0); |
3702 | spin_lock_init(&ipvs->dropentry_lock); | |
3703 | spin_lock_init(&ipvs->droppacket_lock); | |
3704 | spin_lock_init(&ipvs->securetcp_lock); | |
a0840e2e HS |
3705 | |
3706 | if (!net_eq(net, &init_net)) { | |
3707 | tbl = kmemdup(vs_vars, sizeof(vs_vars), GFP_KERNEL); | |
3708 | if (tbl == NULL) | |
14e40546 | 3709 | return -ENOMEM; |
464dc801 EB |
3710 | |
3711 | /* Don't export sysctls to unprivileged users */ | |
3712 | if (net->user_ns != &init_user_ns) | |
3713 | tbl[0].procname = NULL; | |
a0840e2e HS |
3714 | } else |
3715 | tbl = vs_vars; | |
3716 | /* Initialize sysctl defaults */ | |
3717 | idx = 0; | |
3718 | ipvs->sysctl_amemthresh = 1024; | |
3719 | tbl[idx++].data = &ipvs->sysctl_amemthresh; | |
3720 | ipvs->sysctl_am_droprate = 10; | |
3721 | tbl[idx++].data = &ipvs->sysctl_am_droprate; | |
3722 | tbl[idx++].data = &ipvs->sysctl_drop_entry; | |
3723 | tbl[idx++].data = &ipvs->sysctl_drop_packet; | |
3724 | #ifdef CONFIG_IP_VS_NFCT | |
3725 | tbl[idx++].data = &ipvs->sysctl_conntrack; | |
3726 | #endif | |
3727 | tbl[idx++].data = &ipvs->sysctl_secure_tcp; | |
3728 | ipvs->sysctl_snat_reroute = 1; | |
3729 | tbl[idx++].data = &ipvs->sysctl_snat_reroute; | |
3730 | ipvs->sysctl_sync_ver = 1; | |
3731 | tbl[idx++].data = &ipvs->sysctl_sync_ver; | |
f73181c8 PNA |
3732 | ipvs->sysctl_sync_ports = 1; |
3733 | tbl[idx++].data = &ipvs->sysctl_sync_ports; | |
1c003b15 PNA |
3734 | ipvs->sysctl_sync_qlen_max = nr_free_buffer_pages() / 32; |
3735 | tbl[idx++].data = &ipvs->sysctl_sync_qlen_max; | |
3736 | ipvs->sysctl_sync_sock_size = 0; | |
3737 | tbl[idx++].data = &ipvs->sysctl_sync_sock_size; | |
a0840e2e HS |
3738 | tbl[idx++].data = &ipvs->sysctl_cache_bypass; |
3739 | tbl[idx++].data = &ipvs->sysctl_expire_nodest_conn; | |
3740 | tbl[idx++].data = &ipvs->sysctl_expire_quiescent_template; | |
59e0350e SH |
3741 | ipvs->sysctl_sync_threshold[0] = DEFAULT_SYNC_THRESHOLD; |
3742 | ipvs->sysctl_sync_threshold[1] = DEFAULT_SYNC_PERIOD; | |
a0840e2e HS |
3743 | tbl[idx].data = &ipvs->sysctl_sync_threshold; |
3744 | tbl[idx++].maxlen = sizeof(ipvs->sysctl_sync_threshold); | |
749c42b6 JA |
3745 | ipvs->sysctl_sync_refresh_period = DEFAULT_SYNC_REFRESH_PERIOD; |
3746 | tbl[idx++].data = &ipvs->sysctl_sync_refresh_period; | |
3747 | ipvs->sysctl_sync_retries = clamp_t(int, DEFAULT_SYNC_RETRIES, 0, 3); | |
3748 | tbl[idx++].data = &ipvs->sysctl_sync_retries; | |
a0840e2e | 3749 | tbl[idx++].data = &ipvs->sysctl_nat_icmp_send; |
3654e611 JA |
3750 | ipvs->sysctl_pmtu_disc = 1; |
3751 | tbl[idx++].data = &ipvs->sysctl_pmtu_disc; | |
0c12582f | 3752 | tbl[idx++].data = &ipvs->sysctl_backup_only; |
a0840e2e HS |
3753 | |
3754 | ||
ec8f23ce | 3755 | ipvs->sysctl_hdr = register_net_sysctl(net, "net/ipv4/vs", tbl); |
0443929f SH |
3756 | if (ipvs->sysctl_hdr == NULL) { |
3757 | if (!net_eq(net, &init_net)) | |
3758 | kfree(tbl); | |
14e40546 | 3759 | return -ENOMEM; |
0443929f | 3760 | } |
6ef757f9 | 3761 | ip_vs_start_estimator(net, &ipvs->tot_stats); |
a0840e2e | 3762 | ipvs->sysctl_tbl = tbl; |
f6340ee0 HS |
3763 | /* Schedule defense work */ |
3764 | INIT_DELAYED_WORK(&ipvs->defense_work, defense_work_handler); | |
3765 | schedule_delayed_work(&ipvs->defense_work, DEFENSE_TIMER_PERIOD); | |
61b1ab45 | 3766 | |
61b1ab45 | 3767 | return 0; |
61b1ab45 HS |
3768 | } |
3769 | ||
2b2d2808 | 3770 | static void __net_exit ip_vs_control_net_cleanup_sysctl(struct net *net) |
61b1ab45 | 3771 | { |
b17fc996 HS |
3772 | struct netns_ipvs *ipvs = net_ipvs(net); |
3773 | ||
f2431e6e HS |
3774 | cancel_delayed_work_sync(&ipvs->defense_work); |
3775 | cancel_work_sync(&ipvs->defense_work.work); | |
a0840e2e | 3776 | unregister_net_sysctl_table(ipvs->sysctl_hdr); |
14e40546 SH |
3777 | } |
3778 | ||
3779 | #else | |
3780 | ||
2b2d2808 CG |
3781 | static int __net_init ip_vs_control_net_init_sysctl(struct net *net) { return 0; } |
3782 | static void __net_exit ip_vs_control_net_cleanup_sysctl(struct net *net) { } | |
14e40546 | 3783 | |
0443929f | 3784 | #endif |
14e40546 | 3785 | |
7a4f0761 HS |
3786 | static struct notifier_block ip_vs_dst_notifier = { |
3787 | .notifier_call = ip_vs_dst_event, | |
3788 | }; | |
3789 | ||
503cf15a | 3790 | int __net_init ip_vs_control_net_init(struct net *net) |
14e40546 SH |
3791 | { |
3792 | int idx; | |
3793 | struct netns_ipvs *ipvs = net_ipvs(net); | |
3794 | ||
3458e21c | 3795 | rwlock_init(&ipvs->rs_lock); |
14e40546 SH |
3796 | |
3797 | /* Initialize rs_table */ | |
3798 | for (idx = 0; idx < IP_VS_RTAB_SIZE; idx++) | |
3799 | INIT_LIST_HEAD(&ipvs->rs_table[idx]); | |
3800 | ||
3801 | INIT_LIST_HEAD(&ipvs->dest_trash); | |
3802 | atomic_set(&ipvs->ftpsvc_counter, 0); | |
3803 | atomic_set(&ipvs->nullsvc_counter, 0); | |
3804 | ||
3805 | /* procfs stats */ | |
3806 | ipvs->tot_stats.cpustats = alloc_percpu(struct ip_vs_cpu_stats); | |
0a9ee813 | 3807 | if (!ipvs->tot_stats.cpustats) |
14e40546 | 3808 | return -ENOMEM; |
0a9ee813 | 3809 | |
14e40546 SH |
3810 | spin_lock_init(&ipvs->tot_stats.lock); |
3811 | ||
d4beaa66 G |
3812 | proc_create("ip_vs", 0, net->proc_net, &ip_vs_info_fops); |
3813 | proc_create("ip_vs_stats", 0, net->proc_net, &ip_vs_stats_fops); | |
3814 | proc_create("ip_vs_stats_percpu", 0, net->proc_net, | |
3815 | &ip_vs_stats_percpu_fops); | |
14e40546 | 3816 | |
503cf15a | 3817 | if (ip_vs_control_net_init_sysctl(net)) |
14e40546 SH |
3818 | goto err; |
3819 | ||
3820 | return 0; | |
3821 | ||
3822 | err: | |
2a0751af | 3823 | free_percpu(ipvs->tot_stats.cpustats); |
61b1ab45 HS |
3824 | return -ENOMEM; |
3825 | } | |
3826 | ||
503cf15a | 3827 | void __net_exit ip_vs_control_net_cleanup(struct net *net) |
61b1ab45 | 3828 | { |
b17fc996 HS |
3829 | struct netns_ipvs *ipvs = net_ipvs(net); |
3830 | ||
f2431e6e | 3831 | ip_vs_trash_cleanup(net); |
6ef757f9 | 3832 | ip_vs_stop_estimator(net, &ipvs->tot_stats); |
503cf15a | 3833 | ip_vs_control_net_cleanup_sysctl(net); |
ece31ffd G |
3834 | remove_proc_entry("ip_vs_stats_percpu", net->proc_net); |
3835 | remove_proc_entry("ip_vs_stats", net->proc_net); | |
3836 | remove_proc_entry("ip_vs", net->proc_net); | |
2a0751af | 3837 | free_percpu(ipvs->tot_stats.cpustats); |
61b1ab45 HS |
3838 | } |
3839 | ||
8537de8a | 3840 | int __init ip_vs_register_nl_ioctl(void) |
1da177e4 | 3841 | { |
fc723250 | 3842 | int ret; |
1da177e4 | 3843 | |
1da177e4 LT |
3844 | ret = nf_register_sockopt(&ip_vs_sockopts); |
3845 | if (ret) { | |
1e3e238e | 3846 | pr_err("cannot register sockopt.\n"); |
7a4f0761 | 3847 | goto err_sock; |
1da177e4 LT |
3848 | } |
3849 | ||
9a812198 JV |
3850 | ret = ip_vs_genl_register(); |
3851 | if (ret) { | |
1e3e238e | 3852 | pr_err("cannot register Generic Netlink interface.\n"); |
7a4f0761 | 3853 | goto err_genl; |
9a812198 | 3854 | } |
1da177e4 | 3855 | return 0; |
fc723250 | 3856 | |
7a4f0761 HS |
3857 | err_genl: |
3858 | nf_unregister_sockopt(&ip_vs_sockopts); | |
3859 | err_sock: | |
fc723250 | 3860 | return ret; |
1da177e4 LT |
3861 | } |
3862 | ||
8537de8a HS |
3863 | void ip_vs_unregister_nl_ioctl(void) |
3864 | { | |
3865 | ip_vs_genl_unregister(); | |
3866 | nf_unregister_sockopt(&ip_vs_sockopts); | |
3867 | } | |
3868 | ||
3869 | int __init ip_vs_control_init(void) | |
3870 | { | |
3871 | int idx; | |
3872 | int ret; | |
3873 | ||
3874 | EnterFunction(2); | |
3875 | ||
3876 | /* Initialize svc_table, ip_vs_svc_fwm_table, rs_table */ | |
3877 | for (idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { | |
3878 | INIT_LIST_HEAD(&ip_vs_svc_table[idx]); | |
3879 | INIT_LIST_HEAD(&ip_vs_svc_fwm_table[idx]); | |
3880 | } | |
3881 | ||
3882 | smp_wmb(); /* Do we really need it now ? */ | |
3883 | ||
3884 | ret = register_netdevice_notifier(&ip_vs_dst_notifier); | |
3885 | if (ret < 0) | |
3886 | return ret; | |
3887 | ||
3888 | LeaveFunction(2); | |
3889 | return 0; | |
3890 | } | |
3891 | ||
1da177e4 LT |
3892 | |
3893 | void ip_vs_control_cleanup(void) | |
3894 | { | |
3895 | EnterFunction(2); | |
7676e345 | 3896 | unregister_netdevice_notifier(&ip_vs_dst_notifier); |
1da177e4 LT |
3897 | LeaveFunction(2); |
3898 | } |