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 | ||
09571c7a VB |
72 | #ifdef CONFIG_IP_VS_IPV6 |
73 | /* Taken from rt6_fill_node() in net/ipv6/route.c, is there a better way? */ | |
4a98480b HS |
74 | static int __ip_vs_addr_is_local_v6(struct net *net, |
75 | const struct in6_addr *addr) | |
09571c7a VB |
76 | { |
77 | struct rt6_info *rt; | |
78 | struct flowi fl = { | |
79 | .oif = 0, | |
5811662b CG |
80 | .fl6_dst = *addr, |
81 | .fl6_src = { .s6_addr32 = {0, 0, 0, 0} }, | |
09571c7a VB |
82 | }; |
83 | ||
4a98480b | 84 | rt = (struct rt6_info *)ip6_route_output(net, NULL, &fl); |
09571c7a VB |
85 | if (rt && rt->rt6i_dev && (rt->rt6i_dev->flags & IFF_LOOPBACK)) |
86 | return 1; | |
87 | ||
88 | return 0; | |
89 | } | |
90 | #endif | |
1da177e4 | 91 | /* |
af9debd4 JA |
92 | * update_defense_level is called from keventd and from sysctl, |
93 | * so it needs to protect itself from softirqs | |
1da177e4 | 94 | */ |
9330419d | 95 | static void update_defense_level(struct netns_ipvs *ipvs) |
1da177e4 LT |
96 | { |
97 | struct sysinfo i; | |
98 | static int old_secure_tcp = 0; | |
99 | int availmem; | |
100 | int nomem; | |
101 | int to_change = -1; | |
102 | ||
103 | /* we only count free and buffered memory (in pages) */ | |
104 | si_meminfo(&i); | |
105 | availmem = i.freeram + i.bufferram; | |
106 | /* however in linux 2.5 the i.bufferram is total page cache size, | |
107 | we need adjust it */ | |
108 | /* si_swapinfo(&i); */ | |
109 | /* availmem = availmem - (i.totalswap - i.freeswap); */ | |
110 | ||
a0840e2e | 111 | nomem = (availmem < ipvs->sysctl_amemthresh); |
1da177e4 | 112 | |
af9debd4 JA |
113 | local_bh_disable(); |
114 | ||
1da177e4 | 115 | /* drop_entry */ |
a0840e2e HS |
116 | spin_lock(&ipvs->dropentry_lock); |
117 | switch (ipvs->sysctl_drop_entry) { | |
1da177e4 | 118 | case 0: |
a0840e2e | 119 | atomic_set(&ipvs->dropentry, 0); |
1da177e4 LT |
120 | break; |
121 | case 1: | |
122 | if (nomem) { | |
a0840e2e HS |
123 | atomic_set(&ipvs->dropentry, 1); |
124 | ipvs->sysctl_drop_entry = 2; | |
1da177e4 | 125 | } else { |
a0840e2e | 126 | atomic_set(&ipvs->dropentry, 0); |
1da177e4 LT |
127 | } |
128 | break; | |
129 | case 2: | |
130 | if (nomem) { | |
a0840e2e | 131 | atomic_set(&ipvs->dropentry, 1); |
1da177e4 | 132 | } else { |
a0840e2e HS |
133 | atomic_set(&ipvs->dropentry, 0); |
134 | ipvs->sysctl_drop_entry = 1; | |
1da177e4 LT |
135 | }; |
136 | break; | |
137 | case 3: | |
a0840e2e | 138 | atomic_set(&ipvs->dropentry, 1); |
1da177e4 LT |
139 | break; |
140 | } | |
a0840e2e | 141 | spin_unlock(&ipvs->dropentry_lock); |
1da177e4 LT |
142 | |
143 | /* drop_packet */ | |
a0840e2e HS |
144 | spin_lock(&ipvs->droppacket_lock); |
145 | switch (ipvs->sysctl_drop_packet) { | |
1da177e4 | 146 | case 0: |
a0840e2e | 147 | ipvs->drop_rate = 0; |
1da177e4 LT |
148 | break; |
149 | case 1: | |
150 | if (nomem) { | |
a0840e2e HS |
151 | ipvs->drop_rate = ipvs->drop_counter |
152 | = ipvs->sysctl_amemthresh / | |
153 | (ipvs->sysctl_amemthresh-availmem); | |
154 | ipvs->sysctl_drop_packet = 2; | |
1da177e4 | 155 | } else { |
a0840e2e | 156 | ipvs->drop_rate = 0; |
1da177e4 LT |
157 | } |
158 | break; | |
159 | case 2: | |
160 | if (nomem) { | |
a0840e2e HS |
161 | ipvs->drop_rate = ipvs->drop_counter |
162 | = ipvs->sysctl_amemthresh / | |
163 | (ipvs->sysctl_amemthresh-availmem); | |
1da177e4 | 164 | } else { |
a0840e2e HS |
165 | ipvs->drop_rate = 0; |
166 | ipvs->sysctl_drop_packet = 1; | |
1da177e4 LT |
167 | } |
168 | break; | |
169 | case 3: | |
a0840e2e | 170 | ipvs->drop_rate = ipvs->sysctl_am_droprate; |
1da177e4 LT |
171 | break; |
172 | } | |
a0840e2e | 173 | spin_unlock(&ipvs->droppacket_lock); |
1da177e4 LT |
174 | |
175 | /* secure_tcp */ | |
a0840e2e HS |
176 | spin_lock(&ipvs->securetcp_lock); |
177 | switch (ipvs->sysctl_secure_tcp) { | |
1da177e4 LT |
178 | case 0: |
179 | if (old_secure_tcp >= 2) | |
180 | to_change = 0; | |
181 | break; | |
182 | case 1: | |
183 | if (nomem) { | |
184 | if (old_secure_tcp < 2) | |
185 | to_change = 1; | |
a0840e2e | 186 | ipvs->sysctl_secure_tcp = 2; |
1da177e4 LT |
187 | } else { |
188 | if (old_secure_tcp >= 2) | |
189 | to_change = 0; | |
190 | } | |
191 | break; | |
192 | case 2: | |
193 | if (nomem) { | |
194 | if (old_secure_tcp < 2) | |
195 | to_change = 1; | |
196 | } else { | |
197 | if (old_secure_tcp >= 2) | |
198 | to_change = 0; | |
a0840e2e | 199 | ipvs->sysctl_secure_tcp = 1; |
1da177e4 LT |
200 | } |
201 | break; | |
202 | case 3: | |
203 | if (old_secure_tcp < 2) | |
204 | to_change = 1; | |
205 | break; | |
206 | } | |
a0840e2e | 207 | old_secure_tcp = ipvs->sysctl_secure_tcp; |
1da177e4 | 208 | if (to_change >= 0) |
9330419d | 209 | ip_vs_protocol_timeout_change(ipvs, |
a0840e2e HS |
210 | ipvs->sysctl_secure_tcp > 1); |
211 | spin_unlock(&ipvs->securetcp_lock); | |
af9debd4 JA |
212 | |
213 | local_bh_enable(); | |
1da177e4 LT |
214 | } |
215 | ||
216 | ||
217 | /* | |
218 | * Timer for checking the defense | |
219 | */ | |
220 | #define DEFENSE_TIMER_PERIOD 1*HZ | |
1da177e4 | 221 | |
c4028958 | 222 | static void defense_work_handler(struct work_struct *work) |
1da177e4 | 223 | { |
f6340ee0 HS |
224 | struct netns_ipvs *ipvs = |
225 | container_of(work, struct netns_ipvs, defense_work.work); | |
9330419d HS |
226 | |
227 | update_defense_level(ipvs); | |
a0840e2e | 228 | if (atomic_read(&ipvs->dropentry)) |
f6340ee0 HS |
229 | ip_vs_random_dropentry(ipvs->net); |
230 | schedule_delayed_work(&ipvs->defense_work, DEFENSE_TIMER_PERIOD); | |
1da177e4 LT |
231 | } |
232 | ||
233 | int | |
234 | ip_vs_use_count_inc(void) | |
235 | { | |
236 | return try_module_get(THIS_MODULE); | |
237 | } | |
238 | ||
239 | void | |
240 | ip_vs_use_count_dec(void) | |
241 | { | |
242 | module_put(THIS_MODULE); | |
243 | } | |
244 | ||
245 | ||
246 | /* | |
247 | * Hash table: for virtual service lookups | |
248 | */ | |
249 | #define IP_VS_SVC_TAB_BITS 8 | |
250 | #define IP_VS_SVC_TAB_SIZE (1 << IP_VS_SVC_TAB_BITS) | |
251 | #define IP_VS_SVC_TAB_MASK (IP_VS_SVC_TAB_SIZE - 1) | |
252 | ||
253 | /* the service table hashed by <protocol, addr, port> */ | |
254 | static struct list_head ip_vs_svc_table[IP_VS_SVC_TAB_SIZE]; | |
255 | /* the service table hashed by fwmark */ | |
256 | static struct list_head ip_vs_svc_fwm_table[IP_VS_SVC_TAB_SIZE]; | |
257 | ||
1da177e4 LT |
258 | |
259 | /* | |
260 | * Returns hash value for virtual service | |
261 | */ | |
fc723250 HS |
262 | static inline unsigned |
263 | ip_vs_svc_hashkey(struct net *net, int af, unsigned proto, | |
264 | const union nf_inet_addr *addr, __be16 port) | |
1da177e4 LT |
265 | { |
266 | register unsigned porth = ntohs(port); | |
b18610de | 267 | __be32 addr_fold = addr->ip; |
1da177e4 | 268 | |
b18610de JV |
269 | #ifdef CONFIG_IP_VS_IPV6 |
270 | if (af == AF_INET6) | |
271 | addr_fold = addr->ip6[0]^addr->ip6[1]^ | |
272 | addr->ip6[2]^addr->ip6[3]; | |
273 | #endif | |
fc723250 | 274 | addr_fold ^= ((size_t)net>>8); |
b18610de JV |
275 | |
276 | return (proto^ntohl(addr_fold)^(porth>>IP_VS_SVC_TAB_BITS)^porth) | |
1da177e4 LT |
277 | & IP_VS_SVC_TAB_MASK; |
278 | } | |
279 | ||
280 | /* | |
281 | * Returns hash value of fwmark for virtual service lookup | |
282 | */ | |
fc723250 | 283 | static inline unsigned ip_vs_svc_fwm_hashkey(struct net *net, __u32 fwmark) |
1da177e4 | 284 | { |
fc723250 | 285 | return (((size_t)net>>8) ^ fwmark) & IP_VS_SVC_TAB_MASK; |
1da177e4 LT |
286 | } |
287 | ||
288 | /* | |
fc723250 | 289 | * Hashes a service in the ip_vs_svc_table by <netns,proto,addr,port> |
1da177e4 LT |
290 | * or in the ip_vs_svc_fwm_table by fwmark. |
291 | * Should be called with locked tables. | |
292 | */ | |
293 | static int ip_vs_svc_hash(struct ip_vs_service *svc) | |
294 | { | |
295 | unsigned hash; | |
296 | ||
297 | if (svc->flags & IP_VS_SVC_F_HASHED) { | |
1e3e238e HE |
298 | pr_err("%s(): request for already hashed, called from %pF\n", |
299 | __func__, __builtin_return_address(0)); | |
1da177e4 LT |
300 | return 0; |
301 | } | |
302 | ||
303 | if (svc->fwmark == 0) { | |
304 | /* | |
fc723250 | 305 | * Hash it by <netns,protocol,addr,port> in ip_vs_svc_table |
1da177e4 | 306 | */ |
fc723250 HS |
307 | hash = ip_vs_svc_hashkey(svc->net, svc->af, svc->protocol, |
308 | &svc->addr, svc->port); | |
1da177e4 LT |
309 | list_add(&svc->s_list, &ip_vs_svc_table[hash]); |
310 | } else { | |
311 | /* | |
fc723250 | 312 | * Hash it by fwmark in svc_fwm_table |
1da177e4 | 313 | */ |
fc723250 | 314 | hash = ip_vs_svc_fwm_hashkey(svc->net, svc->fwmark); |
1da177e4 LT |
315 | list_add(&svc->f_list, &ip_vs_svc_fwm_table[hash]); |
316 | } | |
317 | ||
318 | svc->flags |= IP_VS_SVC_F_HASHED; | |
319 | /* increase its refcnt because it is referenced by the svc table */ | |
320 | atomic_inc(&svc->refcnt); | |
321 | return 1; | |
322 | } | |
323 | ||
324 | ||
325 | /* | |
fc723250 | 326 | * Unhashes a service from svc_table / svc_fwm_table. |
1da177e4 LT |
327 | * Should be called with locked tables. |
328 | */ | |
329 | static int ip_vs_svc_unhash(struct ip_vs_service *svc) | |
330 | { | |
331 | if (!(svc->flags & IP_VS_SVC_F_HASHED)) { | |
1e3e238e HE |
332 | pr_err("%s(): request for unhash flagged, called from %pF\n", |
333 | __func__, __builtin_return_address(0)); | |
1da177e4 LT |
334 | return 0; |
335 | } | |
336 | ||
337 | if (svc->fwmark == 0) { | |
fc723250 | 338 | /* Remove it from the svc_table table */ |
1da177e4 LT |
339 | list_del(&svc->s_list); |
340 | } else { | |
fc723250 | 341 | /* Remove it from the svc_fwm_table table */ |
1da177e4 LT |
342 | list_del(&svc->f_list); |
343 | } | |
344 | ||
345 | svc->flags &= ~IP_VS_SVC_F_HASHED; | |
346 | atomic_dec(&svc->refcnt); | |
347 | return 1; | |
348 | } | |
349 | ||
350 | ||
351 | /* | |
fc723250 | 352 | * Get service by {netns, proto,addr,port} in the service table. |
1da177e4 | 353 | */ |
b18610de | 354 | static inline struct ip_vs_service * |
fc723250 HS |
355 | __ip_vs_service_find(struct net *net, int af, __u16 protocol, |
356 | const union nf_inet_addr *vaddr, __be16 vport) | |
1da177e4 LT |
357 | { |
358 | unsigned hash; | |
359 | struct ip_vs_service *svc; | |
360 | ||
361 | /* Check for "full" addressed entries */ | |
fc723250 | 362 | hash = ip_vs_svc_hashkey(net, af, protocol, vaddr, vport); |
1da177e4 LT |
363 | |
364 | list_for_each_entry(svc, &ip_vs_svc_table[hash], s_list){ | |
b18610de JV |
365 | if ((svc->af == af) |
366 | && ip_vs_addr_equal(af, &svc->addr, vaddr) | |
1da177e4 | 367 | && (svc->port == vport) |
fc723250 HS |
368 | && (svc->protocol == protocol) |
369 | && net_eq(svc->net, net)) { | |
1da177e4 | 370 | /* HIT */ |
1da177e4 LT |
371 | return svc; |
372 | } | |
373 | } | |
374 | ||
375 | return NULL; | |
376 | } | |
377 | ||
378 | ||
379 | /* | |
380 | * Get service by {fwmark} in the service table. | |
381 | */ | |
b18610de | 382 | static inline struct ip_vs_service * |
fc723250 | 383 | __ip_vs_svc_fwm_find(struct net *net, int af, __u32 fwmark) |
1da177e4 LT |
384 | { |
385 | unsigned hash; | |
386 | struct ip_vs_service *svc; | |
387 | ||
388 | /* Check for fwmark addressed entries */ | |
fc723250 | 389 | hash = ip_vs_svc_fwm_hashkey(net, fwmark); |
1da177e4 LT |
390 | |
391 | list_for_each_entry(svc, &ip_vs_svc_fwm_table[hash], f_list) { | |
fc723250 HS |
392 | if (svc->fwmark == fwmark && svc->af == af |
393 | && net_eq(svc->net, net)) { | |
1da177e4 | 394 | /* HIT */ |
1da177e4 LT |
395 | return svc; |
396 | } | |
397 | } | |
398 | ||
399 | return NULL; | |
400 | } | |
401 | ||
402 | struct ip_vs_service * | |
fc723250 | 403 | ip_vs_service_get(struct net *net, int af, __u32 fwmark, __u16 protocol, |
3c2e0505 | 404 | const union nf_inet_addr *vaddr, __be16 vport) |
1da177e4 LT |
405 | { |
406 | struct ip_vs_service *svc; | |
763f8d0e | 407 | struct netns_ipvs *ipvs = net_ipvs(net); |
3c2e0505 | 408 | |
1da177e4 LT |
409 | read_lock(&__ip_vs_svc_lock); |
410 | ||
411 | /* | |
412 | * Check the table hashed by fwmark first | |
413 | */ | |
fc723250 HS |
414 | svc = __ip_vs_svc_fwm_find(net, af, fwmark); |
415 | if (fwmark && svc) | |
1da177e4 LT |
416 | goto out; |
417 | ||
418 | /* | |
419 | * Check the table hashed by <protocol,addr,port> | |
420 | * for "full" addressed entries | |
421 | */ | |
fc723250 | 422 | svc = __ip_vs_service_find(net, af, protocol, vaddr, vport); |
1da177e4 LT |
423 | |
424 | if (svc == NULL | |
425 | && protocol == IPPROTO_TCP | |
763f8d0e | 426 | && atomic_read(&ipvs->ftpsvc_counter) |
1da177e4 LT |
427 | && (vport == FTPDATA || ntohs(vport) >= PROT_SOCK)) { |
428 | /* | |
429 | * Check if ftp service entry exists, the packet | |
430 | * might belong to FTP data connections. | |
431 | */ | |
fc723250 | 432 | svc = __ip_vs_service_find(net, af, protocol, vaddr, FTPPORT); |
1da177e4 LT |
433 | } |
434 | ||
435 | if (svc == NULL | |
763f8d0e | 436 | && atomic_read(&ipvs->nullsvc_counter)) { |
1da177e4 LT |
437 | /* |
438 | * Check if the catch-all port (port zero) exists | |
439 | */ | |
fc723250 | 440 | svc = __ip_vs_service_find(net, af, protocol, vaddr, 0); |
1da177e4 LT |
441 | } |
442 | ||
443 | out: | |
26c15cfd JA |
444 | if (svc) |
445 | atomic_inc(&svc->usecnt); | |
1da177e4 LT |
446 | read_unlock(&__ip_vs_svc_lock); |
447 | ||
3c2e0505 JV |
448 | IP_VS_DBG_BUF(9, "lookup service: fwm %u %s %s:%u %s\n", |
449 | fwmark, ip_vs_proto_name(protocol), | |
450 | IP_VS_DBG_ADDR(af, vaddr), ntohs(vport), | |
451 | svc ? "hit" : "not hit"); | |
1da177e4 LT |
452 | |
453 | return svc; | |
454 | } | |
455 | ||
456 | ||
457 | static inline void | |
458 | __ip_vs_bind_svc(struct ip_vs_dest *dest, struct ip_vs_service *svc) | |
459 | { | |
460 | atomic_inc(&svc->refcnt); | |
461 | dest->svc = svc; | |
462 | } | |
463 | ||
26c15cfd | 464 | static void |
1da177e4 LT |
465 | __ip_vs_unbind_svc(struct ip_vs_dest *dest) |
466 | { | |
467 | struct ip_vs_service *svc = dest->svc; | |
468 | ||
469 | dest->svc = NULL; | |
26c15cfd JA |
470 | if (atomic_dec_and_test(&svc->refcnt)) { |
471 | IP_VS_DBG_BUF(3, "Removing service %u/%s:%u usecnt=%d\n", | |
472 | svc->fwmark, | |
473 | IP_VS_DBG_ADDR(svc->af, &svc->addr), | |
474 | ntohs(svc->port), atomic_read(&svc->usecnt)); | |
b17fc996 | 475 | free_percpu(svc->stats.cpustats); |
1da177e4 | 476 | kfree(svc); |
26c15cfd | 477 | } |
1da177e4 LT |
478 | } |
479 | ||
480 | ||
481 | /* | |
482 | * Returns hash value for real service | |
483 | */ | |
7937df15 JV |
484 | static inline unsigned ip_vs_rs_hashkey(int af, |
485 | const union nf_inet_addr *addr, | |
486 | __be16 port) | |
1da177e4 LT |
487 | { |
488 | register unsigned porth = ntohs(port); | |
7937df15 JV |
489 | __be32 addr_fold = addr->ip; |
490 | ||
491 | #ifdef CONFIG_IP_VS_IPV6 | |
492 | if (af == AF_INET6) | |
493 | addr_fold = addr->ip6[0]^addr->ip6[1]^ | |
494 | addr->ip6[2]^addr->ip6[3]; | |
495 | #endif | |
1da177e4 | 496 | |
7937df15 | 497 | return (ntohl(addr_fold)^(porth>>IP_VS_RTAB_BITS)^porth) |
1da177e4 LT |
498 | & IP_VS_RTAB_MASK; |
499 | } | |
500 | ||
501 | /* | |
fc723250 | 502 | * Hashes ip_vs_dest in rs_table by <proto,addr,port>. |
1da177e4 LT |
503 | * should be called with locked tables. |
504 | */ | |
fc723250 | 505 | static int ip_vs_rs_hash(struct netns_ipvs *ipvs, struct ip_vs_dest *dest) |
1da177e4 LT |
506 | { |
507 | unsigned hash; | |
508 | ||
509 | if (!list_empty(&dest->d_list)) { | |
510 | return 0; | |
511 | } | |
512 | ||
513 | /* | |
514 | * Hash by proto,addr,port, | |
515 | * which are the parameters of the real service. | |
516 | */ | |
7937df15 JV |
517 | hash = ip_vs_rs_hashkey(dest->af, &dest->addr, dest->port); |
518 | ||
fc723250 | 519 | list_add(&dest->d_list, &ipvs->rs_table[hash]); |
1da177e4 LT |
520 | |
521 | return 1; | |
522 | } | |
523 | ||
524 | /* | |
fc723250 | 525 | * UNhashes ip_vs_dest from rs_table. |
1da177e4 LT |
526 | * should be called with locked tables. |
527 | */ | |
528 | static int ip_vs_rs_unhash(struct ip_vs_dest *dest) | |
529 | { | |
530 | /* | |
fc723250 | 531 | * Remove it from the rs_table table. |
1da177e4 LT |
532 | */ |
533 | if (!list_empty(&dest->d_list)) { | |
534 | list_del(&dest->d_list); | |
535 | INIT_LIST_HEAD(&dest->d_list); | |
536 | } | |
537 | ||
538 | return 1; | |
539 | } | |
540 | ||
541 | /* | |
542 | * Lookup real service by <proto,addr,port> in the real service table. | |
543 | */ | |
544 | struct ip_vs_dest * | |
fc723250 | 545 | ip_vs_lookup_real_service(struct net *net, int af, __u16 protocol, |
7937df15 JV |
546 | const union nf_inet_addr *daddr, |
547 | __be16 dport) | |
1da177e4 | 548 | { |
fc723250 | 549 | struct netns_ipvs *ipvs = net_ipvs(net); |
1da177e4 LT |
550 | unsigned hash; |
551 | struct ip_vs_dest *dest; | |
552 | ||
553 | /* | |
554 | * Check for "full" addressed entries | |
555 | * Return the first found entry | |
556 | */ | |
7937df15 | 557 | hash = ip_vs_rs_hashkey(af, daddr, dport); |
1da177e4 | 558 | |
a0840e2e | 559 | read_lock(&ipvs->rs_lock); |
fc723250 | 560 | list_for_each_entry(dest, &ipvs->rs_table[hash], d_list) { |
7937df15 JV |
561 | if ((dest->af == af) |
562 | && ip_vs_addr_equal(af, &dest->addr, daddr) | |
1da177e4 LT |
563 | && (dest->port == dport) |
564 | && ((dest->protocol == protocol) || | |
565 | dest->vfwmark)) { | |
566 | /* HIT */ | |
a0840e2e | 567 | read_unlock(&ipvs->rs_lock); |
1da177e4 LT |
568 | return dest; |
569 | } | |
570 | } | |
a0840e2e | 571 | read_unlock(&ipvs->rs_lock); |
1da177e4 LT |
572 | |
573 | return NULL; | |
574 | } | |
575 | ||
576 | /* | |
577 | * Lookup destination by {addr,port} in the given service | |
578 | */ | |
579 | static struct ip_vs_dest * | |
7937df15 JV |
580 | ip_vs_lookup_dest(struct ip_vs_service *svc, const union nf_inet_addr *daddr, |
581 | __be16 dport) | |
1da177e4 LT |
582 | { |
583 | struct ip_vs_dest *dest; | |
584 | ||
585 | /* | |
586 | * Find the destination for the given service | |
587 | */ | |
588 | list_for_each_entry(dest, &svc->destinations, n_list) { | |
7937df15 JV |
589 | if ((dest->af == svc->af) |
590 | && ip_vs_addr_equal(svc->af, &dest->addr, daddr) | |
591 | && (dest->port == dport)) { | |
1da177e4 LT |
592 | /* HIT */ |
593 | return dest; | |
594 | } | |
595 | } | |
596 | ||
597 | return NULL; | |
598 | } | |
599 | ||
1e356f9c RB |
600 | /* |
601 | * Find destination by {daddr,dport,vaddr,protocol} | |
602 | * Cretaed to be used in ip_vs_process_message() in | |
603 | * the backup synchronization daemon. It finds the | |
604 | * destination to be bound to the received connection | |
605 | * on the backup. | |
606 | * | |
607 | * ip_vs_lookup_real_service() looked promissing, but | |
608 | * seems not working as expected. | |
609 | */ | |
fc723250 HS |
610 | struct ip_vs_dest *ip_vs_find_dest(struct net *net, int af, |
611 | const union nf_inet_addr *daddr, | |
7937df15 JV |
612 | __be16 dport, |
613 | const union nf_inet_addr *vaddr, | |
0e051e68 | 614 | __be16 vport, __u16 protocol, __u32 fwmark) |
1e356f9c RB |
615 | { |
616 | struct ip_vs_dest *dest; | |
617 | struct ip_vs_service *svc; | |
618 | ||
fc723250 | 619 | svc = ip_vs_service_get(net, af, fwmark, protocol, vaddr, vport); |
1e356f9c RB |
620 | if (!svc) |
621 | return NULL; | |
622 | dest = ip_vs_lookup_dest(svc, daddr, dport); | |
623 | if (dest) | |
624 | atomic_inc(&dest->refcnt); | |
625 | ip_vs_service_put(svc); | |
626 | return dest; | |
627 | } | |
1da177e4 LT |
628 | |
629 | /* | |
630 | * Lookup dest by {svc,addr,port} in the destination trash. | |
631 | * The destination trash is used to hold the destinations that are removed | |
632 | * from the service table but are still referenced by some conn entries. | |
633 | * The reason to add the destination trash is when the dest is temporary | |
634 | * down (either by administrator or by monitor program), the dest can be | |
635 | * picked back from the trash, the remaining connections to the dest can | |
636 | * continue, and the counting information of the dest is also useful for | |
637 | * scheduling. | |
638 | */ | |
639 | static struct ip_vs_dest * | |
7937df15 JV |
640 | ip_vs_trash_get_dest(struct ip_vs_service *svc, const union nf_inet_addr *daddr, |
641 | __be16 dport) | |
1da177e4 LT |
642 | { |
643 | struct ip_vs_dest *dest, *nxt; | |
f2431e6e | 644 | struct netns_ipvs *ipvs = net_ipvs(svc->net); |
1da177e4 LT |
645 | |
646 | /* | |
647 | * Find the destination in trash | |
648 | */ | |
f2431e6e | 649 | list_for_each_entry_safe(dest, nxt, &ipvs->dest_trash, n_list) { |
7937df15 JV |
650 | IP_VS_DBG_BUF(3, "Destination %u/%s:%u still in trash, " |
651 | "dest->refcnt=%d\n", | |
652 | dest->vfwmark, | |
653 | IP_VS_DBG_ADDR(svc->af, &dest->addr), | |
654 | ntohs(dest->port), | |
655 | atomic_read(&dest->refcnt)); | |
656 | if (dest->af == svc->af && | |
657 | ip_vs_addr_equal(svc->af, &dest->addr, daddr) && | |
1da177e4 LT |
658 | dest->port == dport && |
659 | dest->vfwmark == svc->fwmark && | |
660 | dest->protocol == svc->protocol && | |
661 | (svc->fwmark || | |
7937df15 | 662 | (ip_vs_addr_equal(svc->af, &dest->vaddr, &svc->addr) && |
1da177e4 LT |
663 | dest->vport == svc->port))) { |
664 | /* HIT */ | |
665 | return dest; | |
666 | } | |
667 | ||
668 | /* | |
669 | * Try to purge the destination from trash if not referenced | |
670 | */ | |
671 | if (atomic_read(&dest->refcnt) == 1) { | |
7937df15 JV |
672 | IP_VS_DBG_BUF(3, "Removing destination %u/%s:%u " |
673 | "from trash\n", | |
674 | dest->vfwmark, | |
675 | IP_VS_DBG_ADDR(svc->af, &dest->addr), | |
676 | ntohs(dest->port)); | |
1da177e4 LT |
677 | list_del(&dest->n_list); |
678 | ip_vs_dst_reset(dest); | |
679 | __ip_vs_unbind_svc(dest); | |
b17fc996 | 680 | free_percpu(dest->stats.cpustats); |
1da177e4 LT |
681 | kfree(dest); |
682 | } | |
683 | } | |
684 | ||
685 | return NULL; | |
686 | } | |
687 | ||
688 | ||
689 | /* | |
690 | * Clean up all the destinations in the trash | |
691 | * Called by the ip_vs_control_cleanup() | |
692 | * | |
693 | * When the ip_vs_control_clearup is activated by ipvs module exit, | |
694 | * the service tables must have been flushed and all the connections | |
695 | * are expired, and the refcnt of each destination in the trash must | |
696 | * be 1, so we simply release them here. | |
697 | */ | |
f2431e6e | 698 | static void ip_vs_trash_cleanup(struct net *net) |
1da177e4 LT |
699 | { |
700 | struct ip_vs_dest *dest, *nxt; | |
f2431e6e | 701 | struct netns_ipvs *ipvs = net_ipvs(net); |
1da177e4 | 702 | |
f2431e6e | 703 | list_for_each_entry_safe(dest, nxt, &ipvs->dest_trash, n_list) { |
1da177e4 LT |
704 | list_del(&dest->n_list); |
705 | ip_vs_dst_reset(dest); | |
706 | __ip_vs_unbind_svc(dest); | |
b17fc996 | 707 | free_percpu(dest->stats.cpustats); |
1da177e4 LT |
708 | kfree(dest); |
709 | } | |
710 | } | |
711 | ||
712 | ||
713 | static void | |
714 | ip_vs_zero_stats(struct ip_vs_stats *stats) | |
715 | { | |
716 | spin_lock_bh(&stats->lock); | |
e93615d0 | 717 | |
e9c0ce23 | 718 | memset(&stats->ustats, 0, sizeof(stats->ustats)); |
1da177e4 | 719 | ip_vs_zero_estimator(stats); |
e93615d0 | 720 | |
3a14a313 | 721 | spin_unlock_bh(&stats->lock); |
1da177e4 LT |
722 | } |
723 | ||
724 | /* | |
725 | * Update a destination in the given service | |
726 | */ | |
727 | static void | |
26c15cfd JA |
728 | __ip_vs_update_dest(struct ip_vs_service *svc, struct ip_vs_dest *dest, |
729 | struct ip_vs_dest_user_kern *udest, int add) | |
1da177e4 | 730 | { |
fc723250 | 731 | struct netns_ipvs *ipvs = net_ipvs(svc->net); |
1da177e4 LT |
732 | int conn_flags; |
733 | ||
734 | /* set the weight and the flags */ | |
735 | atomic_set(&dest->weight, udest->weight); | |
3575792e JA |
736 | conn_flags = udest->conn_flags & IP_VS_CONN_F_DEST_MASK; |
737 | conn_flags |= IP_VS_CONN_F_INACTIVE; | |
1da177e4 | 738 | |
1da177e4 | 739 | /* set the IP_VS_CONN_F_NOOUTPUT flag if not masquerading/NAT */ |
3575792e | 740 | if ((conn_flags & IP_VS_CONN_F_FWD_MASK) != IP_VS_CONN_F_MASQ) { |
1da177e4 LT |
741 | conn_flags |= IP_VS_CONN_F_NOOUTPUT; |
742 | } else { | |
743 | /* | |
fc723250 | 744 | * Put the real service in rs_table if not present. |
1da177e4 LT |
745 | * For now only for NAT! |
746 | */ | |
a0840e2e | 747 | write_lock_bh(&ipvs->rs_lock); |
fc723250 | 748 | ip_vs_rs_hash(ipvs, dest); |
a0840e2e | 749 | write_unlock_bh(&ipvs->rs_lock); |
1da177e4 LT |
750 | } |
751 | atomic_set(&dest->conn_flags, conn_flags); | |
752 | ||
753 | /* bind the service */ | |
754 | if (!dest->svc) { | |
755 | __ip_vs_bind_svc(dest, svc); | |
756 | } else { | |
757 | if (dest->svc != svc) { | |
758 | __ip_vs_unbind_svc(dest); | |
759 | ip_vs_zero_stats(&dest->stats); | |
760 | __ip_vs_bind_svc(dest, svc); | |
761 | } | |
762 | } | |
763 | ||
764 | /* set the dest status flags */ | |
765 | dest->flags |= IP_VS_DEST_F_AVAILABLE; | |
766 | ||
767 | if (udest->u_threshold == 0 || udest->u_threshold > dest->u_threshold) | |
768 | dest->flags &= ~IP_VS_DEST_F_OVERLOAD; | |
769 | dest->u_threshold = udest->u_threshold; | |
770 | dest->l_threshold = udest->l_threshold; | |
26c15cfd | 771 | |
fc604767 JA |
772 | spin_lock(&dest->dst_lock); |
773 | ip_vs_dst_reset(dest); | |
774 | spin_unlock(&dest->dst_lock); | |
775 | ||
26c15cfd | 776 | if (add) |
29c2026f | 777 | ip_vs_new_estimator(svc->net, &dest->stats); |
26c15cfd JA |
778 | |
779 | write_lock_bh(&__ip_vs_svc_lock); | |
780 | ||
781 | /* Wait until all other svc users go away */ | |
782 | IP_VS_WAIT_WHILE(atomic_read(&svc->usecnt) > 0); | |
783 | ||
784 | if (add) { | |
785 | list_add(&dest->n_list, &svc->destinations); | |
786 | svc->num_dests++; | |
787 | } | |
788 | ||
789 | /* call the update_service, because server weight may be changed */ | |
790 | if (svc->scheduler->update_service) | |
791 | svc->scheduler->update_service(svc); | |
792 | ||
793 | write_unlock_bh(&__ip_vs_svc_lock); | |
1da177e4 LT |
794 | } |
795 | ||
796 | ||
797 | /* | |
798 | * Create a destination for the given service | |
799 | */ | |
800 | static int | |
c860c6b1 | 801 | ip_vs_new_dest(struct ip_vs_service *svc, struct ip_vs_dest_user_kern *udest, |
1da177e4 LT |
802 | struct ip_vs_dest **dest_p) |
803 | { | |
804 | struct ip_vs_dest *dest; | |
805 | unsigned atype; | |
806 | ||
807 | EnterFunction(2); | |
808 | ||
09571c7a VB |
809 | #ifdef CONFIG_IP_VS_IPV6 |
810 | if (svc->af == AF_INET6) { | |
811 | atype = ipv6_addr_type(&udest->addr.in6); | |
3bfb92f4 SW |
812 | if ((!(atype & IPV6_ADDR_UNICAST) || |
813 | atype & IPV6_ADDR_LINKLOCAL) && | |
4a98480b | 814 | !__ip_vs_addr_is_local_v6(svc->net, &udest->addr.in6)) |
09571c7a VB |
815 | return -EINVAL; |
816 | } else | |
817 | #endif | |
818 | { | |
4a98480b | 819 | atype = inet_addr_type(svc->net, udest->addr.ip); |
09571c7a VB |
820 | if (atype != RTN_LOCAL && atype != RTN_UNICAST) |
821 | return -EINVAL; | |
822 | } | |
1da177e4 | 823 | |
dee06e47 | 824 | dest = kzalloc(sizeof(struct ip_vs_dest), GFP_KERNEL); |
1da177e4 | 825 | if (dest == NULL) { |
1e3e238e | 826 | pr_err("%s(): no memory.\n", __func__); |
1da177e4 LT |
827 | return -ENOMEM; |
828 | } | |
b17fc996 HS |
829 | dest->stats.cpustats = alloc_percpu(struct ip_vs_cpu_stats); |
830 | if (!dest->stats.cpustats) { | |
831 | pr_err("%s() alloc_percpu failed\n", __func__); | |
832 | goto err_alloc; | |
833 | } | |
1da177e4 | 834 | |
c860c6b1 | 835 | dest->af = svc->af; |
1da177e4 | 836 | dest->protocol = svc->protocol; |
c860c6b1 | 837 | dest->vaddr = svc->addr; |
1da177e4 LT |
838 | dest->vport = svc->port; |
839 | dest->vfwmark = svc->fwmark; | |
c860c6b1 | 840 | ip_vs_addr_copy(svc->af, &dest->addr, &udest->addr); |
1da177e4 LT |
841 | dest->port = udest->port; |
842 | ||
843 | atomic_set(&dest->activeconns, 0); | |
844 | atomic_set(&dest->inactconns, 0); | |
845 | atomic_set(&dest->persistconns, 0); | |
26c15cfd | 846 | atomic_set(&dest->refcnt, 1); |
1da177e4 LT |
847 | |
848 | INIT_LIST_HEAD(&dest->d_list); | |
849 | spin_lock_init(&dest->dst_lock); | |
850 | spin_lock_init(&dest->stats.lock); | |
26c15cfd | 851 | __ip_vs_update_dest(svc, dest, udest, 1); |
1da177e4 LT |
852 | |
853 | *dest_p = dest; | |
854 | ||
855 | LeaveFunction(2); | |
856 | return 0; | |
b17fc996 HS |
857 | |
858 | err_alloc: | |
859 | kfree(dest); | |
860 | return -ENOMEM; | |
1da177e4 LT |
861 | } |
862 | ||
863 | ||
864 | /* | |
865 | * Add a destination into an existing service | |
866 | */ | |
867 | static int | |
c860c6b1 | 868 | ip_vs_add_dest(struct ip_vs_service *svc, struct ip_vs_dest_user_kern *udest) |
1da177e4 LT |
869 | { |
870 | struct ip_vs_dest *dest; | |
c860c6b1 | 871 | union nf_inet_addr daddr; |
014d730d | 872 | __be16 dport = udest->port; |
1da177e4 LT |
873 | int ret; |
874 | ||
875 | EnterFunction(2); | |
876 | ||
877 | if (udest->weight < 0) { | |
1e3e238e | 878 | pr_err("%s(): server weight less than zero\n", __func__); |
1da177e4 LT |
879 | return -ERANGE; |
880 | } | |
881 | ||
882 | if (udest->l_threshold > udest->u_threshold) { | |
1e3e238e HE |
883 | pr_err("%s(): lower threshold is higher than upper threshold\n", |
884 | __func__); | |
1da177e4 LT |
885 | return -ERANGE; |
886 | } | |
887 | ||
c860c6b1 JV |
888 | ip_vs_addr_copy(svc->af, &daddr, &udest->addr); |
889 | ||
1da177e4 LT |
890 | /* |
891 | * Check if the dest already exists in the list | |
892 | */ | |
7937df15 JV |
893 | dest = ip_vs_lookup_dest(svc, &daddr, dport); |
894 | ||
1da177e4 | 895 | if (dest != NULL) { |
1e3e238e | 896 | IP_VS_DBG(1, "%s(): dest already exists\n", __func__); |
1da177e4 LT |
897 | return -EEXIST; |
898 | } | |
899 | ||
900 | /* | |
901 | * Check if the dest already exists in the trash and | |
902 | * is from the same service | |
903 | */ | |
7937df15 JV |
904 | dest = ip_vs_trash_get_dest(svc, &daddr, dport); |
905 | ||
1da177e4 | 906 | if (dest != NULL) { |
cfc78c5a JV |
907 | IP_VS_DBG_BUF(3, "Get destination %s:%u from trash, " |
908 | "dest->refcnt=%d, service %u/%s:%u\n", | |
909 | IP_VS_DBG_ADDR(svc->af, &daddr), ntohs(dport), | |
910 | atomic_read(&dest->refcnt), | |
911 | dest->vfwmark, | |
912 | IP_VS_DBG_ADDR(svc->af, &dest->vaddr), | |
913 | ntohs(dest->vport)); | |
914 | ||
1da177e4 LT |
915 | /* |
916 | * Get the destination from the trash | |
917 | */ | |
918 | list_del(&dest->n_list); | |
919 | ||
26c15cfd JA |
920 | __ip_vs_update_dest(svc, dest, udest, 1); |
921 | ret = 0; | |
922 | } else { | |
1da177e4 | 923 | /* |
26c15cfd | 924 | * Allocate and initialize the dest structure |
1da177e4 | 925 | */ |
26c15cfd | 926 | ret = ip_vs_new_dest(svc, udest, &dest); |
1da177e4 | 927 | } |
1da177e4 LT |
928 | LeaveFunction(2); |
929 | ||
26c15cfd | 930 | return ret; |
1da177e4 LT |
931 | } |
932 | ||
933 | ||
934 | /* | |
935 | * Edit a destination in the given service | |
936 | */ | |
937 | static int | |
c860c6b1 | 938 | ip_vs_edit_dest(struct ip_vs_service *svc, struct ip_vs_dest_user_kern *udest) |
1da177e4 LT |
939 | { |
940 | struct ip_vs_dest *dest; | |
c860c6b1 | 941 | union nf_inet_addr daddr; |
014d730d | 942 | __be16 dport = udest->port; |
1da177e4 LT |
943 | |
944 | EnterFunction(2); | |
945 | ||
946 | if (udest->weight < 0) { | |
1e3e238e | 947 | pr_err("%s(): server weight less than zero\n", __func__); |
1da177e4 LT |
948 | return -ERANGE; |
949 | } | |
950 | ||
951 | if (udest->l_threshold > udest->u_threshold) { | |
1e3e238e HE |
952 | pr_err("%s(): lower threshold is higher than upper threshold\n", |
953 | __func__); | |
1da177e4 LT |
954 | return -ERANGE; |
955 | } | |
956 | ||
c860c6b1 JV |
957 | ip_vs_addr_copy(svc->af, &daddr, &udest->addr); |
958 | ||
1da177e4 LT |
959 | /* |
960 | * Lookup the destination list | |
961 | */ | |
7937df15 JV |
962 | dest = ip_vs_lookup_dest(svc, &daddr, dport); |
963 | ||
1da177e4 | 964 | if (dest == NULL) { |
1e3e238e | 965 | IP_VS_DBG(1, "%s(): dest doesn't exist\n", __func__); |
1da177e4 LT |
966 | return -ENOENT; |
967 | } | |
968 | ||
26c15cfd | 969 | __ip_vs_update_dest(svc, dest, udest, 0); |
1da177e4 LT |
970 | LeaveFunction(2); |
971 | ||
972 | return 0; | |
973 | } | |
974 | ||
975 | ||
976 | /* | |
977 | * Delete a destination (must be already unlinked from the service) | |
978 | */ | |
29c2026f | 979 | static void __ip_vs_del_dest(struct net *net, struct ip_vs_dest *dest) |
1da177e4 | 980 | { |
a0840e2e HS |
981 | struct netns_ipvs *ipvs = net_ipvs(net); |
982 | ||
29c2026f | 983 | ip_vs_kill_estimator(net, &dest->stats); |
1da177e4 LT |
984 | |
985 | /* | |
986 | * Remove it from the d-linked list with the real services. | |
987 | */ | |
a0840e2e | 988 | write_lock_bh(&ipvs->rs_lock); |
1da177e4 | 989 | ip_vs_rs_unhash(dest); |
a0840e2e | 990 | write_unlock_bh(&ipvs->rs_lock); |
1da177e4 LT |
991 | |
992 | /* | |
993 | * Decrease the refcnt of the dest, and free the dest | |
994 | * if nobody refers to it (refcnt=0). Otherwise, throw | |
995 | * the destination into the trash. | |
996 | */ | |
997 | if (atomic_dec_and_test(&dest->refcnt)) { | |
26c15cfd JA |
998 | IP_VS_DBG_BUF(3, "Removing destination %u/%s:%u\n", |
999 | dest->vfwmark, | |
1000 | IP_VS_DBG_ADDR(dest->af, &dest->addr), | |
1001 | ntohs(dest->port)); | |
1da177e4 LT |
1002 | ip_vs_dst_reset(dest); |
1003 | /* simply decrease svc->refcnt here, let the caller check | |
1004 | and release the service if nobody refers to it. | |
1005 | Only user context can release destination and service, | |
1006 | and only one user context can update virtual service at a | |
1007 | time, so the operation here is OK */ | |
1008 | atomic_dec(&dest->svc->refcnt); | |
b17fc996 | 1009 | free_percpu(dest->stats.cpustats); |
1da177e4 LT |
1010 | kfree(dest); |
1011 | } else { | |
cfc78c5a JV |
1012 | IP_VS_DBG_BUF(3, "Moving dest %s:%u into trash, " |
1013 | "dest->refcnt=%d\n", | |
1014 | IP_VS_DBG_ADDR(dest->af, &dest->addr), | |
1015 | ntohs(dest->port), | |
1016 | atomic_read(&dest->refcnt)); | |
f2431e6e | 1017 | list_add(&dest->n_list, &ipvs->dest_trash); |
1da177e4 LT |
1018 | atomic_inc(&dest->refcnt); |
1019 | } | |
1020 | } | |
1021 | ||
1022 | ||
1023 | /* | |
1024 | * Unlink a destination from the given service | |
1025 | */ | |
1026 | static void __ip_vs_unlink_dest(struct ip_vs_service *svc, | |
1027 | struct ip_vs_dest *dest, | |
1028 | int svcupd) | |
1029 | { | |
1030 | dest->flags &= ~IP_VS_DEST_F_AVAILABLE; | |
1031 | ||
1032 | /* | |
1033 | * Remove it from the d-linked destination list. | |
1034 | */ | |
1035 | list_del(&dest->n_list); | |
1036 | svc->num_dests--; | |
82dfb6f3 SW |
1037 | |
1038 | /* | |
1039 | * Call the update_service function of its scheduler | |
1040 | */ | |
1041 | if (svcupd && svc->scheduler->update_service) | |
1042 | svc->scheduler->update_service(svc); | |
1da177e4 LT |
1043 | } |
1044 | ||
1045 | ||
1046 | /* | |
1047 | * Delete a destination server in the given service | |
1048 | */ | |
1049 | static int | |
c860c6b1 | 1050 | ip_vs_del_dest(struct ip_vs_service *svc, struct ip_vs_dest_user_kern *udest) |
1da177e4 LT |
1051 | { |
1052 | struct ip_vs_dest *dest; | |
014d730d | 1053 | __be16 dport = udest->port; |
1da177e4 LT |
1054 | |
1055 | EnterFunction(2); | |
1056 | ||
7937df15 | 1057 | dest = ip_vs_lookup_dest(svc, &udest->addr, dport); |
c860c6b1 | 1058 | |
1da177e4 | 1059 | if (dest == NULL) { |
1e3e238e | 1060 | IP_VS_DBG(1, "%s(): destination not found!\n", __func__); |
1da177e4 LT |
1061 | return -ENOENT; |
1062 | } | |
1063 | ||
1064 | write_lock_bh(&__ip_vs_svc_lock); | |
1065 | ||
1066 | /* | |
1067 | * Wait until all other svc users go away. | |
1068 | */ | |
26c15cfd | 1069 | IP_VS_WAIT_WHILE(atomic_read(&svc->usecnt) > 0); |
1da177e4 LT |
1070 | |
1071 | /* | |
1072 | * Unlink dest from the service | |
1073 | */ | |
1074 | __ip_vs_unlink_dest(svc, dest, 1); | |
1075 | ||
1076 | write_unlock_bh(&__ip_vs_svc_lock); | |
1077 | ||
1078 | /* | |
1079 | * Delete the destination | |
1080 | */ | |
a0840e2e | 1081 | __ip_vs_del_dest(svc->net, dest); |
1da177e4 LT |
1082 | |
1083 | LeaveFunction(2); | |
1084 | ||
1085 | return 0; | |
1086 | } | |
1087 | ||
1088 | ||
1089 | /* | |
1090 | * Add a service into the service hash table | |
1091 | */ | |
1092 | static int | |
fc723250 | 1093 | ip_vs_add_service(struct net *net, struct ip_vs_service_user_kern *u, |
c860c6b1 | 1094 | struct ip_vs_service **svc_p) |
1da177e4 LT |
1095 | { |
1096 | int ret = 0; | |
1097 | struct ip_vs_scheduler *sched = NULL; | |
0d1e71b0 | 1098 | struct ip_vs_pe *pe = NULL; |
1da177e4 | 1099 | struct ip_vs_service *svc = NULL; |
a0840e2e | 1100 | struct netns_ipvs *ipvs = net_ipvs(net); |
1da177e4 LT |
1101 | |
1102 | /* increase the module use count */ | |
1103 | ip_vs_use_count_inc(); | |
1104 | ||
1105 | /* Lookup the scheduler by 'u->sched_name' */ | |
1106 | sched = ip_vs_scheduler_get(u->sched_name); | |
1107 | if (sched == NULL) { | |
1e3e238e | 1108 | pr_info("Scheduler module ip_vs_%s not found\n", u->sched_name); |
1da177e4 | 1109 | ret = -ENOENT; |
6e08bfb8 | 1110 | goto out_err; |
1da177e4 LT |
1111 | } |
1112 | ||
0d1e71b0 | 1113 | if (u->pe_name && *u->pe_name) { |
e9e5eee8 | 1114 | pe = ip_vs_pe_getbyname(u->pe_name); |
0d1e71b0 SH |
1115 | if (pe == NULL) { |
1116 | pr_info("persistence engine module ip_vs_pe_%s " | |
1117 | "not found\n", u->pe_name); | |
1118 | ret = -ENOENT; | |
1119 | goto out_err; | |
1120 | } | |
1121 | } | |
1122 | ||
f94fd041 | 1123 | #ifdef CONFIG_IP_VS_IPV6 |
48148938 JV |
1124 | if (u->af == AF_INET6 && (u->netmask < 1 || u->netmask > 128)) { |
1125 | ret = -EINVAL; | |
1126 | goto out_err; | |
f94fd041 JV |
1127 | } |
1128 | #endif | |
1129 | ||
dee06e47 | 1130 | svc = kzalloc(sizeof(struct ip_vs_service), GFP_KERNEL); |
1da177e4 | 1131 | if (svc == NULL) { |
1e3e238e | 1132 | IP_VS_DBG(1, "%s(): no memory\n", __func__); |
1da177e4 LT |
1133 | ret = -ENOMEM; |
1134 | goto out_err; | |
1135 | } | |
b17fc996 HS |
1136 | svc->stats.cpustats = alloc_percpu(struct ip_vs_cpu_stats); |
1137 | if (!svc->stats.cpustats) { | |
1138 | pr_err("%s() alloc_percpu failed\n", __func__); | |
1139 | goto out_err; | |
1140 | } | |
1da177e4 LT |
1141 | |
1142 | /* I'm the first user of the service */ | |
26c15cfd | 1143 | atomic_set(&svc->usecnt, 0); |
1da177e4 LT |
1144 | atomic_set(&svc->refcnt, 0); |
1145 | ||
c860c6b1 | 1146 | svc->af = u->af; |
1da177e4 | 1147 | svc->protocol = u->protocol; |
c860c6b1 | 1148 | ip_vs_addr_copy(svc->af, &svc->addr, &u->addr); |
1da177e4 LT |
1149 | svc->port = u->port; |
1150 | svc->fwmark = u->fwmark; | |
1151 | svc->flags = u->flags; | |
1152 | svc->timeout = u->timeout * HZ; | |
1153 | svc->netmask = u->netmask; | |
fc723250 | 1154 | svc->net = net; |
1da177e4 LT |
1155 | |
1156 | INIT_LIST_HEAD(&svc->destinations); | |
1157 | rwlock_init(&svc->sched_lock); | |
1158 | spin_lock_init(&svc->stats.lock); | |
1159 | ||
1160 | /* Bind the scheduler */ | |
1161 | ret = ip_vs_bind_scheduler(svc, sched); | |
1162 | if (ret) | |
1163 | goto out_err; | |
1164 | sched = NULL; | |
1165 | ||
0d1e71b0 SH |
1166 | /* Bind the ct retriever */ |
1167 | ip_vs_bind_pe(svc, pe); | |
1168 | pe = NULL; | |
1169 | ||
1da177e4 LT |
1170 | /* Update the virtual service counters */ |
1171 | if (svc->port == FTPPORT) | |
763f8d0e | 1172 | atomic_inc(&ipvs->ftpsvc_counter); |
1da177e4 | 1173 | else if (svc->port == 0) |
763f8d0e | 1174 | atomic_inc(&ipvs->nullsvc_counter); |
1da177e4 | 1175 | |
29c2026f | 1176 | ip_vs_new_estimator(net, &svc->stats); |
f94fd041 JV |
1177 | |
1178 | /* Count only IPv4 services for old get/setsockopt interface */ | |
1179 | if (svc->af == AF_INET) | |
a0840e2e | 1180 | ipvs->num_services++; |
1da177e4 LT |
1181 | |
1182 | /* Hash the service into the service table */ | |
1183 | write_lock_bh(&__ip_vs_svc_lock); | |
1184 | ip_vs_svc_hash(svc); | |
1185 | write_unlock_bh(&__ip_vs_svc_lock); | |
1186 | ||
1187 | *svc_p = svc; | |
1188 | return 0; | |
1189 | ||
b17fc996 | 1190 | |
6e08bfb8 | 1191 | out_err: |
1da177e4 | 1192 | if (svc != NULL) { |
2fabf35b | 1193 | ip_vs_unbind_scheduler(svc); |
1da177e4 LT |
1194 | if (svc->inc) { |
1195 | local_bh_disable(); | |
1196 | ip_vs_app_inc_put(svc->inc); | |
1197 | local_bh_enable(); | |
1198 | } | |
b17fc996 HS |
1199 | if (svc->stats.cpustats) |
1200 | free_percpu(svc->stats.cpustats); | |
1da177e4 LT |
1201 | kfree(svc); |
1202 | } | |
1203 | ip_vs_scheduler_put(sched); | |
0d1e71b0 | 1204 | ip_vs_pe_put(pe); |
1da177e4 | 1205 | |
1da177e4 LT |
1206 | /* decrease the module use count */ |
1207 | ip_vs_use_count_dec(); | |
1208 | ||
1209 | return ret; | |
1210 | } | |
1211 | ||
1212 | ||
1213 | /* | |
1214 | * Edit a service and bind it with a new scheduler | |
1215 | */ | |
1216 | static int | |
c860c6b1 | 1217 | ip_vs_edit_service(struct ip_vs_service *svc, struct ip_vs_service_user_kern *u) |
1da177e4 LT |
1218 | { |
1219 | struct ip_vs_scheduler *sched, *old_sched; | |
0d1e71b0 | 1220 | struct ip_vs_pe *pe = NULL, *old_pe = NULL; |
1da177e4 LT |
1221 | int ret = 0; |
1222 | ||
1223 | /* | |
1224 | * Lookup the scheduler, by 'u->sched_name' | |
1225 | */ | |
1226 | sched = ip_vs_scheduler_get(u->sched_name); | |
1227 | if (sched == NULL) { | |
1e3e238e | 1228 | pr_info("Scheduler module ip_vs_%s not found\n", u->sched_name); |
1da177e4 LT |
1229 | return -ENOENT; |
1230 | } | |
1231 | old_sched = sched; | |
1232 | ||
0d1e71b0 | 1233 | if (u->pe_name && *u->pe_name) { |
e9e5eee8 | 1234 | pe = ip_vs_pe_getbyname(u->pe_name); |
0d1e71b0 SH |
1235 | if (pe == NULL) { |
1236 | pr_info("persistence engine module ip_vs_pe_%s " | |
1237 | "not found\n", u->pe_name); | |
1238 | ret = -ENOENT; | |
1239 | goto out; | |
1240 | } | |
1241 | old_pe = pe; | |
1242 | } | |
1243 | ||
f94fd041 | 1244 | #ifdef CONFIG_IP_VS_IPV6 |
48148938 JV |
1245 | if (u->af == AF_INET6 && (u->netmask < 1 || u->netmask > 128)) { |
1246 | ret = -EINVAL; | |
1247 | goto out; | |
f94fd041 JV |
1248 | } |
1249 | #endif | |
1250 | ||
1da177e4 LT |
1251 | write_lock_bh(&__ip_vs_svc_lock); |
1252 | ||
1253 | /* | |
1254 | * Wait until all other svc users go away. | |
1255 | */ | |
26c15cfd | 1256 | IP_VS_WAIT_WHILE(atomic_read(&svc->usecnt) > 0); |
1da177e4 LT |
1257 | |
1258 | /* | |
1259 | * Set the flags and timeout value | |
1260 | */ | |
1261 | svc->flags = u->flags | IP_VS_SVC_F_HASHED; | |
1262 | svc->timeout = u->timeout * HZ; | |
1263 | svc->netmask = u->netmask; | |
1264 | ||
1265 | old_sched = svc->scheduler; | |
1266 | if (sched != old_sched) { | |
1267 | /* | |
1268 | * Unbind the old scheduler | |
1269 | */ | |
1270 | if ((ret = ip_vs_unbind_scheduler(svc))) { | |
1271 | old_sched = sched; | |
9e691ed6 | 1272 | goto out_unlock; |
1da177e4 LT |
1273 | } |
1274 | ||
1275 | /* | |
1276 | * Bind the new scheduler | |
1277 | */ | |
1278 | if ((ret = ip_vs_bind_scheduler(svc, sched))) { | |
1279 | /* | |
1280 | * If ip_vs_bind_scheduler fails, restore the old | |
1281 | * scheduler. | |
1282 | * The main reason of failure is out of memory. | |
1283 | * | |
1284 | * The question is if the old scheduler can be | |
1285 | * restored all the time. TODO: if it cannot be | |
1286 | * restored some time, we must delete the service, | |
1287 | * otherwise the system may crash. | |
1288 | */ | |
1289 | ip_vs_bind_scheduler(svc, old_sched); | |
1290 | old_sched = sched; | |
9e691ed6 | 1291 | goto out_unlock; |
1da177e4 LT |
1292 | } |
1293 | } | |
1294 | ||
0d1e71b0 SH |
1295 | old_pe = svc->pe; |
1296 | if (pe != old_pe) { | |
1297 | ip_vs_unbind_pe(svc); | |
1298 | ip_vs_bind_pe(svc, pe); | |
1299 | } | |
1300 | ||
9e691ed6 | 1301 | out_unlock: |
1da177e4 | 1302 | write_unlock_bh(&__ip_vs_svc_lock); |
9e691ed6 | 1303 | out: |
6e08bfb8 | 1304 | ip_vs_scheduler_put(old_sched); |
0d1e71b0 | 1305 | ip_vs_pe_put(old_pe); |
1da177e4 LT |
1306 | return ret; |
1307 | } | |
1308 | ||
1309 | ||
1310 | /* | |
1311 | * Delete a service from the service list | |
1312 | * - The service must be unlinked, unlocked and not referenced! | |
1313 | * - We are called under _bh lock | |
1314 | */ | |
1315 | static void __ip_vs_del_service(struct ip_vs_service *svc) | |
1316 | { | |
1317 | struct ip_vs_dest *dest, *nxt; | |
1318 | struct ip_vs_scheduler *old_sched; | |
0d1e71b0 | 1319 | struct ip_vs_pe *old_pe; |
a0840e2e | 1320 | struct netns_ipvs *ipvs = net_ipvs(svc->net); |
0d1e71b0 SH |
1321 | |
1322 | pr_info("%s: enter\n", __func__); | |
1da177e4 | 1323 | |
f94fd041 JV |
1324 | /* Count only IPv4 services for old get/setsockopt interface */ |
1325 | if (svc->af == AF_INET) | |
a0840e2e | 1326 | ipvs->num_services--; |
f94fd041 | 1327 | |
29c2026f | 1328 | ip_vs_kill_estimator(svc->net, &svc->stats); |
1da177e4 LT |
1329 | |
1330 | /* Unbind scheduler */ | |
1331 | old_sched = svc->scheduler; | |
1332 | ip_vs_unbind_scheduler(svc); | |
6e08bfb8 | 1333 | ip_vs_scheduler_put(old_sched); |
1da177e4 | 1334 | |
0d1e71b0 SH |
1335 | /* Unbind persistence engine */ |
1336 | old_pe = svc->pe; | |
1337 | ip_vs_unbind_pe(svc); | |
1338 | ip_vs_pe_put(old_pe); | |
1339 | ||
1da177e4 LT |
1340 | /* Unbind app inc */ |
1341 | if (svc->inc) { | |
1342 | ip_vs_app_inc_put(svc->inc); | |
1343 | svc->inc = NULL; | |
1344 | } | |
1345 | ||
1346 | /* | |
1347 | * Unlink the whole destination list | |
1348 | */ | |
1349 | list_for_each_entry_safe(dest, nxt, &svc->destinations, n_list) { | |
1350 | __ip_vs_unlink_dest(svc, dest, 0); | |
29c2026f | 1351 | __ip_vs_del_dest(svc->net, dest); |
1da177e4 LT |
1352 | } |
1353 | ||
1354 | /* | |
1355 | * Update the virtual service counters | |
1356 | */ | |
1357 | if (svc->port == FTPPORT) | |
763f8d0e | 1358 | atomic_dec(&ipvs->ftpsvc_counter); |
1da177e4 | 1359 | else if (svc->port == 0) |
763f8d0e | 1360 | atomic_dec(&ipvs->nullsvc_counter); |
1da177e4 LT |
1361 | |
1362 | /* | |
1363 | * Free the service if nobody refers to it | |
1364 | */ | |
26c15cfd JA |
1365 | if (atomic_read(&svc->refcnt) == 0) { |
1366 | IP_VS_DBG_BUF(3, "Removing service %u/%s:%u usecnt=%d\n", | |
1367 | svc->fwmark, | |
1368 | IP_VS_DBG_ADDR(svc->af, &svc->addr), | |
1369 | ntohs(svc->port), atomic_read(&svc->usecnt)); | |
b17fc996 | 1370 | free_percpu(svc->stats.cpustats); |
1da177e4 | 1371 | kfree(svc); |
26c15cfd | 1372 | } |
1da177e4 LT |
1373 | |
1374 | /* decrease the module use count */ | |
1375 | ip_vs_use_count_dec(); | |
1376 | } | |
1377 | ||
1378 | /* | |
26c15cfd | 1379 | * Unlink a service from list and try to delete it if its refcnt reached 0 |
1da177e4 | 1380 | */ |
26c15cfd | 1381 | static void ip_vs_unlink_service(struct ip_vs_service *svc) |
1da177e4 | 1382 | { |
1da177e4 LT |
1383 | /* |
1384 | * Unhash it from the service table | |
1385 | */ | |
1386 | write_lock_bh(&__ip_vs_svc_lock); | |
1387 | ||
1388 | ip_vs_svc_unhash(svc); | |
1389 | ||
1390 | /* | |
1391 | * Wait until all the svc users go away. | |
1392 | */ | |
26c15cfd | 1393 | IP_VS_WAIT_WHILE(atomic_read(&svc->usecnt) > 0); |
1da177e4 LT |
1394 | |
1395 | __ip_vs_del_service(svc); | |
1396 | ||
1397 | write_unlock_bh(&__ip_vs_svc_lock); | |
26c15cfd JA |
1398 | } |
1399 | ||
1400 | /* | |
1401 | * Delete a service from the service list | |
1402 | */ | |
1403 | static int ip_vs_del_service(struct ip_vs_service *svc) | |
1404 | { | |
1405 | if (svc == NULL) | |
1406 | return -EEXIST; | |
1407 | ip_vs_unlink_service(svc); | |
1da177e4 LT |
1408 | |
1409 | return 0; | |
1410 | } | |
1411 | ||
1412 | ||
1413 | /* | |
1414 | * Flush all the virtual services | |
1415 | */ | |
fc723250 | 1416 | static int ip_vs_flush(struct net *net) |
1da177e4 LT |
1417 | { |
1418 | int idx; | |
1419 | struct ip_vs_service *svc, *nxt; | |
1420 | ||
1421 | /* | |
fc723250 | 1422 | * Flush the service table hashed by <netns,protocol,addr,port> |
1da177e4 LT |
1423 | */ |
1424 | for(idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { | |
fc723250 HS |
1425 | list_for_each_entry_safe(svc, nxt, &ip_vs_svc_table[idx], |
1426 | s_list) { | |
1427 | if (net_eq(svc->net, net)) | |
1428 | ip_vs_unlink_service(svc); | |
1da177e4 LT |
1429 | } |
1430 | } | |
1431 | ||
1432 | /* | |
1433 | * Flush the service table hashed by fwmark | |
1434 | */ | |
1435 | for(idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { | |
1436 | list_for_each_entry_safe(svc, nxt, | |
1437 | &ip_vs_svc_fwm_table[idx], f_list) { | |
fc723250 HS |
1438 | if (net_eq(svc->net, net)) |
1439 | ip_vs_unlink_service(svc); | |
1da177e4 LT |
1440 | } |
1441 | } | |
1442 | ||
1443 | return 0; | |
1444 | } | |
1445 | ||
1446 | ||
1447 | /* | |
1448 | * Zero counters in a service or all services | |
1449 | */ | |
1450 | static int ip_vs_zero_service(struct ip_vs_service *svc) | |
1451 | { | |
1452 | struct ip_vs_dest *dest; | |
1453 | ||
1454 | write_lock_bh(&__ip_vs_svc_lock); | |
1455 | list_for_each_entry(dest, &svc->destinations, n_list) { | |
1456 | ip_vs_zero_stats(&dest->stats); | |
1457 | } | |
1458 | ip_vs_zero_stats(&svc->stats); | |
1459 | write_unlock_bh(&__ip_vs_svc_lock); | |
1460 | return 0; | |
1461 | } | |
1462 | ||
fc723250 | 1463 | static int ip_vs_zero_all(struct net *net) |
1da177e4 LT |
1464 | { |
1465 | int idx; | |
1466 | struct ip_vs_service *svc; | |
1467 | ||
1468 | for(idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { | |
1469 | list_for_each_entry(svc, &ip_vs_svc_table[idx], s_list) { | |
fc723250 HS |
1470 | if (net_eq(svc->net, net)) |
1471 | ip_vs_zero_service(svc); | |
1da177e4 LT |
1472 | } |
1473 | } | |
1474 | ||
1475 | for(idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { | |
1476 | list_for_each_entry(svc, &ip_vs_svc_fwm_table[idx], f_list) { | |
fc723250 HS |
1477 | if (net_eq(svc->net, net)) |
1478 | ip_vs_zero_service(svc); | |
1da177e4 LT |
1479 | } |
1480 | } | |
1481 | ||
b17fc996 | 1482 | ip_vs_zero_stats(net_ipvs(net)->tot_stats); |
1da177e4 LT |
1483 | return 0; |
1484 | } | |
1485 | ||
1486 | ||
1487 | static int | |
8d65af78 | 1488 | proc_do_defense_mode(ctl_table *table, int write, |
1da177e4 LT |
1489 | void __user *buffer, size_t *lenp, loff_t *ppos) |
1490 | { | |
9330419d | 1491 | struct net *net = current->nsproxy->net_ns; |
1da177e4 LT |
1492 | int *valp = table->data; |
1493 | int val = *valp; | |
1494 | int rc; | |
1495 | ||
8d65af78 | 1496 | rc = proc_dointvec(table, write, buffer, lenp, ppos); |
1da177e4 LT |
1497 | if (write && (*valp != val)) { |
1498 | if ((*valp < 0) || (*valp > 3)) { | |
1499 | /* Restore the correct value */ | |
1500 | *valp = val; | |
1501 | } else { | |
9330419d | 1502 | update_defense_level(net_ipvs(net)); |
1da177e4 LT |
1503 | } |
1504 | } | |
1505 | return rc; | |
1506 | } | |
1507 | ||
1508 | ||
1509 | static int | |
8d65af78 | 1510 | proc_do_sync_threshold(ctl_table *table, int write, |
1da177e4 LT |
1511 | void __user *buffer, size_t *lenp, loff_t *ppos) |
1512 | { | |
1513 | int *valp = table->data; | |
1514 | int val[2]; | |
1515 | int rc; | |
1516 | ||
1517 | /* backup the value first */ | |
1518 | memcpy(val, valp, sizeof(val)); | |
1519 | ||
8d65af78 | 1520 | rc = proc_dointvec(table, write, buffer, lenp, ppos); |
1da177e4 LT |
1521 | if (write && (valp[0] < 0 || valp[1] < 0 || valp[0] >= valp[1])) { |
1522 | /* Restore the correct value */ | |
1523 | memcpy(valp, val, sizeof(val)); | |
1524 | } | |
1525 | return rc; | |
1526 | } | |
1527 | ||
b880c1f0 HS |
1528 | static int |
1529 | proc_do_sync_mode(ctl_table *table, int write, | |
1530 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
1531 | { | |
1532 | int *valp = table->data; | |
1533 | int val = *valp; | |
1534 | int rc; | |
1535 | ||
1536 | rc = proc_dointvec(table, write, buffer, lenp, ppos); | |
1537 | if (write && (*valp != val)) { | |
1538 | if ((*valp < 0) || (*valp > 1)) { | |
1539 | /* Restore the correct value */ | |
1540 | *valp = val; | |
1541 | } else { | |
f131315f HS |
1542 | struct net *net = current->nsproxy->net_ns; |
1543 | ip_vs_sync_switch_mode(net, val); | |
b880c1f0 HS |
1544 | } |
1545 | } | |
1546 | return rc; | |
1547 | } | |
1da177e4 LT |
1548 | |
1549 | /* | |
1550 | * IPVS sysctl table (under the /proc/sys/net/ipv4/vs/) | |
a0840e2e HS |
1551 | * Do not change order or insert new entries without |
1552 | * align with netns init in __ip_vs_control_init() | |
1da177e4 LT |
1553 | */ |
1554 | ||
1555 | static struct ctl_table vs_vars[] = { | |
1556 | { | |
1da177e4 | 1557 | .procname = "amemthresh", |
1da177e4 LT |
1558 | .maxlen = sizeof(int), |
1559 | .mode = 0644, | |
6d9f239a | 1560 | .proc_handler = proc_dointvec, |
1da177e4 | 1561 | }, |
1da177e4 | 1562 | { |
1da177e4 | 1563 | .procname = "am_droprate", |
1da177e4 LT |
1564 | .maxlen = sizeof(int), |
1565 | .mode = 0644, | |
6d9f239a | 1566 | .proc_handler = proc_dointvec, |
1da177e4 LT |
1567 | }, |
1568 | { | |
1da177e4 | 1569 | .procname = "drop_entry", |
1da177e4 LT |
1570 | .maxlen = sizeof(int), |
1571 | .mode = 0644, | |
6d9f239a | 1572 | .proc_handler = proc_do_defense_mode, |
1da177e4 LT |
1573 | }, |
1574 | { | |
1da177e4 | 1575 | .procname = "drop_packet", |
1da177e4 LT |
1576 | .maxlen = sizeof(int), |
1577 | .mode = 0644, | |
6d9f239a | 1578 | .proc_handler = proc_do_defense_mode, |
1da177e4 | 1579 | }, |
f4bc17cd JA |
1580 | #ifdef CONFIG_IP_VS_NFCT |
1581 | { | |
1582 | .procname = "conntrack", | |
f4bc17cd JA |
1583 | .maxlen = sizeof(int), |
1584 | .mode = 0644, | |
1585 | .proc_handler = &proc_dointvec, | |
1586 | }, | |
1587 | #endif | |
1da177e4 | 1588 | { |
1da177e4 | 1589 | .procname = "secure_tcp", |
1da177e4 LT |
1590 | .maxlen = sizeof(int), |
1591 | .mode = 0644, | |
6d9f239a | 1592 | .proc_handler = proc_do_defense_mode, |
1da177e4 | 1593 | }, |
8a803040 JA |
1594 | { |
1595 | .procname = "snat_reroute", | |
8a803040 JA |
1596 | .maxlen = sizeof(int), |
1597 | .mode = 0644, | |
1598 | .proc_handler = &proc_dointvec, | |
1599 | }, | |
b880c1f0 HS |
1600 | { |
1601 | .procname = "sync_version", | |
b880c1f0 HS |
1602 | .maxlen = sizeof(int), |
1603 | .mode = 0644, | |
1604 | .proc_handler = &proc_do_sync_mode, | |
1605 | }, | |
a0840e2e HS |
1606 | { |
1607 | .procname = "cache_bypass", | |
1608 | .maxlen = sizeof(int), | |
1609 | .mode = 0644, | |
1610 | .proc_handler = proc_dointvec, | |
1611 | }, | |
1612 | { | |
1613 | .procname = "expire_nodest_conn", | |
1614 | .maxlen = sizeof(int), | |
1615 | .mode = 0644, | |
1616 | .proc_handler = proc_dointvec, | |
1617 | }, | |
1618 | { | |
1619 | .procname = "expire_quiescent_template", | |
1620 | .maxlen = sizeof(int), | |
1621 | .mode = 0644, | |
1622 | .proc_handler = proc_dointvec, | |
1623 | }, | |
1624 | { | |
1625 | .procname = "sync_threshold", | |
1626 | .maxlen = | |
1627 | sizeof(((struct netns_ipvs *)0)->sysctl_sync_threshold), | |
1628 | .mode = 0644, | |
1629 | .proc_handler = proc_do_sync_threshold, | |
1630 | }, | |
1631 | { | |
1632 | .procname = "nat_icmp_send", | |
1633 | .maxlen = sizeof(int), | |
1634 | .mode = 0644, | |
1635 | .proc_handler = proc_dointvec, | |
1636 | }, | |
1637 | #ifdef CONFIG_IP_VS_DEBUG | |
1638 | { | |
1639 | .procname = "debug_level", | |
1640 | .data = &sysctl_ip_vs_debug_level, | |
1641 | .maxlen = sizeof(int), | |
1642 | .mode = 0644, | |
1643 | .proc_handler = proc_dointvec, | |
1644 | }, | |
1645 | #endif | |
1da177e4 LT |
1646 | #if 0 |
1647 | { | |
1da177e4 LT |
1648 | .procname = "timeout_established", |
1649 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_ESTABLISHED], | |
1650 | .maxlen = sizeof(int), | |
1651 | .mode = 0644, | |
6d9f239a | 1652 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1653 | }, |
1654 | { | |
1da177e4 LT |
1655 | .procname = "timeout_synsent", |
1656 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_SYN_SENT], | |
1657 | .maxlen = sizeof(int), | |
1658 | .mode = 0644, | |
6d9f239a | 1659 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1660 | }, |
1661 | { | |
1da177e4 LT |
1662 | .procname = "timeout_synrecv", |
1663 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_SYN_RECV], | |
1664 | .maxlen = sizeof(int), | |
1665 | .mode = 0644, | |
6d9f239a | 1666 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1667 | }, |
1668 | { | |
1da177e4 LT |
1669 | .procname = "timeout_finwait", |
1670 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_FIN_WAIT], | |
1671 | .maxlen = sizeof(int), | |
1672 | .mode = 0644, | |
6d9f239a | 1673 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1674 | }, |
1675 | { | |
1da177e4 LT |
1676 | .procname = "timeout_timewait", |
1677 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_TIME_WAIT], | |
1678 | .maxlen = sizeof(int), | |
1679 | .mode = 0644, | |
6d9f239a | 1680 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1681 | }, |
1682 | { | |
1da177e4 LT |
1683 | .procname = "timeout_close", |
1684 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_CLOSE], | |
1685 | .maxlen = sizeof(int), | |
1686 | .mode = 0644, | |
6d9f239a | 1687 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1688 | }, |
1689 | { | |
1da177e4 LT |
1690 | .procname = "timeout_closewait", |
1691 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_CLOSE_WAIT], | |
1692 | .maxlen = sizeof(int), | |
1693 | .mode = 0644, | |
6d9f239a | 1694 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1695 | }, |
1696 | { | |
1da177e4 LT |
1697 | .procname = "timeout_lastack", |
1698 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_LAST_ACK], | |
1699 | .maxlen = sizeof(int), | |
1700 | .mode = 0644, | |
6d9f239a | 1701 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1702 | }, |
1703 | { | |
1da177e4 LT |
1704 | .procname = "timeout_listen", |
1705 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_LISTEN], | |
1706 | .maxlen = sizeof(int), | |
1707 | .mode = 0644, | |
6d9f239a | 1708 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1709 | }, |
1710 | { | |
1da177e4 LT |
1711 | .procname = "timeout_synack", |
1712 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_SYNACK], | |
1713 | .maxlen = sizeof(int), | |
1714 | .mode = 0644, | |
6d9f239a | 1715 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1716 | }, |
1717 | { | |
1da177e4 LT |
1718 | .procname = "timeout_udp", |
1719 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_UDP], | |
1720 | .maxlen = sizeof(int), | |
1721 | .mode = 0644, | |
6d9f239a | 1722 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1723 | }, |
1724 | { | |
1da177e4 LT |
1725 | .procname = "timeout_icmp", |
1726 | .data = &vs_timeout_table_dos.timeout[IP_VS_S_ICMP], | |
1727 | .maxlen = sizeof(int), | |
1728 | .mode = 0644, | |
6d9f239a | 1729 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1730 | }, |
1731 | #endif | |
f8572d8f | 1732 | { } |
1da177e4 LT |
1733 | }; |
1734 | ||
5587da55 | 1735 | const struct ctl_path net_vs_ctl_path[] = { |
f8572d8f EB |
1736 | { .procname = "net", }, |
1737 | { .procname = "ipv4", }, | |
90754f8e PE |
1738 | { .procname = "vs", }, |
1739 | { } | |
1da177e4 | 1740 | }; |
90754f8e | 1741 | EXPORT_SYMBOL_GPL(net_vs_ctl_path); |
1da177e4 | 1742 | |
1da177e4 LT |
1743 | #ifdef CONFIG_PROC_FS |
1744 | ||
1745 | struct ip_vs_iter { | |
fc723250 | 1746 | struct seq_net_private p; /* Do not move this, netns depends upon it*/ |
1da177e4 LT |
1747 | struct list_head *table; |
1748 | int bucket; | |
1749 | }; | |
1750 | ||
1751 | /* | |
1752 | * Write the contents of the VS rule table to a PROCfs file. | |
1753 | * (It is kept just for backward compatibility) | |
1754 | */ | |
1755 | static inline const char *ip_vs_fwd_name(unsigned flags) | |
1756 | { | |
1757 | switch (flags & IP_VS_CONN_F_FWD_MASK) { | |
1758 | case IP_VS_CONN_F_LOCALNODE: | |
1759 | return "Local"; | |
1760 | case IP_VS_CONN_F_TUNNEL: | |
1761 | return "Tunnel"; | |
1762 | case IP_VS_CONN_F_DROUTE: | |
1763 | return "Route"; | |
1764 | default: | |
1765 | return "Masq"; | |
1766 | } | |
1767 | } | |
1768 | ||
1769 | ||
1770 | /* Get the Nth entry in the two lists */ | |
1771 | static struct ip_vs_service *ip_vs_info_array(struct seq_file *seq, loff_t pos) | |
1772 | { | |
fc723250 | 1773 | struct net *net = seq_file_net(seq); |
1da177e4 LT |
1774 | struct ip_vs_iter *iter = seq->private; |
1775 | int idx; | |
1776 | struct ip_vs_service *svc; | |
1777 | ||
1778 | /* look in hash by protocol */ | |
1779 | for (idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { | |
1780 | list_for_each_entry(svc, &ip_vs_svc_table[idx], s_list) { | |
fc723250 | 1781 | if (net_eq(svc->net, net) && pos-- == 0) { |
1da177e4 LT |
1782 | iter->table = ip_vs_svc_table; |
1783 | iter->bucket = idx; | |
1784 | return svc; | |
1785 | } | |
1786 | } | |
1787 | } | |
1788 | ||
1789 | /* keep looking in fwmark */ | |
1790 | for (idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { | |
1791 | list_for_each_entry(svc, &ip_vs_svc_fwm_table[idx], f_list) { | |
fc723250 | 1792 | if (net_eq(svc->net, net) && pos-- == 0) { |
1da177e4 LT |
1793 | iter->table = ip_vs_svc_fwm_table; |
1794 | iter->bucket = idx; | |
1795 | return svc; | |
1796 | } | |
1797 | } | |
1798 | } | |
1799 | ||
1800 | return NULL; | |
1801 | } | |
1802 | ||
1803 | static void *ip_vs_info_seq_start(struct seq_file *seq, loff_t *pos) | |
563e94f0 | 1804 | __acquires(__ip_vs_svc_lock) |
1da177e4 LT |
1805 | { |
1806 | ||
1807 | read_lock_bh(&__ip_vs_svc_lock); | |
1808 | return *pos ? ip_vs_info_array(seq, *pos - 1) : SEQ_START_TOKEN; | |
1809 | } | |
1810 | ||
1811 | ||
1812 | static void *ip_vs_info_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
1813 | { | |
1814 | struct list_head *e; | |
1815 | struct ip_vs_iter *iter; | |
1816 | struct ip_vs_service *svc; | |
1817 | ||
1818 | ++*pos; | |
1819 | if (v == SEQ_START_TOKEN) | |
1820 | return ip_vs_info_array(seq,0); | |
1821 | ||
1822 | svc = v; | |
1823 | iter = seq->private; | |
1824 | ||
1825 | if (iter->table == ip_vs_svc_table) { | |
1826 | /* next service in table hashed by protocol */ | |
1827 | if ((e = svc->s_list.next) != &ip_vs_svc_table[iter->bucket]) | |
1828 | return list_entry(e, struct ip_vs_service, s_list); | |
1829 | ||
1830 | ||
1831 | while (++iter->bucket < IP_VS_SVC_TAB_SIZE) { | |
1832 | list_for_each_entry(svc,&ip_vs_svc_table[iter->bucket], | |
1833 | s_list) { | |
1834 | return svc; | |
1835 | } | |
1836 | } | |
1837 | ||
1838 | iter->table = ip_vs_svc_fwm_table; | |
1839 | iter->bucket = -1; | |
1840 | goto scan_fwmark; | |
1841 | } | |
1842 | ||
1843 | /* next service in hashed by fwmark */ | |
1844 | if ((e = svc->f_list.next) != &ip_vs_svc_fwm_table[iter->bucket]) | |
1845 | return list_entry(e, struct ip_vs_service, f_list); | |
1846 | ||
1847 | scan_fwmark: | |
1848 | while (++iter->bucket < IP_VS_SVC_TAB_SIZE) { | |
1849 | list_for_each_entry(svc, &ip_vs_svc_fwm_table[iter->bucket], | |
1850 | f_list) | |
1851 | return svc; | |
1852 | } | |
1853 | ||
1854 | return NULL; | |
1855 | } | |
1856 | ||
1857 | static void ip_vs_info_seq_stop(struct seq_file *seq, void *v) | |
563e94f0 | 1858 | __releases(__ip_vs_svc_lock) |
1da177e4 LT |
1859 | { |
1860 | read_unlock_bh(&__ip_vs_svc_lock); | |
1861 | } | |
1862 | ||
1863 | ||
1864 | static int ip_vs_info_seq_show(struct seq_file *seq, void *v) | |
1865 | { | |
1866 | if (v == SEQ_START_TOKEN) { | |
1867 | seq_printf(seq, | |
1868 | "IP Virtual Server version %d.%d.%d (size=%d)\n", | |
6f7edb48 | 1869 | NVERSION(IP_VS_VERSION_CODE), ip_vs_conn_tab_size); |
1da177e4 LT |
1870 | seq_puts(seq, |
1871 | "Prot LocalAddress:Port Scheduler Flags\n"); | |
1872 | seq_puts(seq, | |
1873 | " -> RemoteAddress:Port Forward Weight ActiveConn InActConn\n"); | |
1874 | } else { | |
1875 | const struct ip_vs_service *svc = v; | |
1876 | const struct ip_vs_iter *iter = seq->private; | |
1877 | const struct ip_vs_dest *dest; | |
1878 | ||
667a5f18 VB |
1879 | if (iter->table == ip_vs_svc_table) { |
1880 | #ifdef CONFIG_IP_VS_IPV6 | |
1881 | if (svc->af == AF_INET6) | |
5b095d98 | 1882 | seq_printf(seq, "%s [%pI6]:%04X %s ", |
667a5f18 | 1883 | ip_vs_proto_name(svc->protocol), |
38ff4fa4 | 1884 | &svc->addr.in6, |
667a5f18 VB |
1885 | ntohs(svc->port), |
1886 | svc->scheduler->name); | |
1887 | else | |
1888 | #endif | |
26ec037f | 1889 | seq_printf(seq, "%s %08X:%04X %s %s ", |
667a5f18 VB |
1890 | ip_vs_proto_name(svc->protocol), |
1891 | ntohl(svc->addr.ip), | |
1892 | ntohs(svc->port), | |
26ec037f NC |
1893 | svc->scheduler->name, |
1894 | (svc->flags & IP_VS_SVC_F_ONEPACKET)?"ops ":""); | |
667a5f18 | 1895 | } else { |
26ec037f NC |
1896 | seq_printf(seq, "FWM %08X %s %s", |
1897 | svc->fwmark, svc->scheduler->name, | |
1898 | (svc->flags & IP_VS_SVC_F_ONEPACKET)?"ops ":""); | |
667a5f18 | 1899 | } |
1da177e4 LT |
1900 | |
1901 | if (svc->flags & IP_VS_SVC_F_PERSISTENT) | |
1902 | seq_printf(seq, "persistent %d %08X\n", | |
1903 | svc->timeout, | |
1904 | ntohl(svc->netmask)); | |
1905 | else | |
1906 | seq_putc(seq, '\n'); | |
1907 | ||
1908 | list_for_each_entry(dest, &svc->destinations, n_list) { | |
667a5f18 VB |
1909 | #ifdef CONFIG_IP_VS_IPV6 |
1910 | if (dest->af == AF_INET6) | |
1911 | seq_printf(seq, | |
5b095d98 | 1912 | " -> [%pI6]:%04X" |
667a5f18 | 1913 | " %-7s %-6d %-10d %-10d\n", |
38ff4fa4 | 1914 | &dest->addr.in6, |
667a5f18 VB |
1915 | ntohs(dest->port), |
1916 | ip_vs_fwd_name(atomic_read(&dest->conn_flags)), | |
1917 | atomic_read(&dest->weight), | |
1918 | atomic_read(&dest->activeconns), | |
1919 | atomic_read(&dest->inactconns)); | |
1920 | else | |
1921 | #endif | |
1922 | seq_printf(seq, | |
1923 | " -> %08X:%04X " | |
1924 | "%-7s %-6d %-10d %-10d\n", | |
1925 | ntohl(dest->addr.ip), | |
1926 | ntohs(dest->port), | |
1927 | ip_vs_fwd_name(atomic_read(&dest->conn_flags)), | |
1928 | atomic_read(&dest->weight), | |
1929 | atomic_read(&dest->activeconns), | |
1930 | atomic_read(&dest->inactconns)); | |
1931 | ||
1da177e4 LT |
1932 | } |
1933 | } | |
1934 | return 0; | |
1935 | } | |
1936 | ||
56b3d975 | 1937 | static const struct seq_operations ip_vs_info_seq_ops = { |
1da177e4 LT |
1938 | .start = ip_vs_info_seq_start, |
1939 | .next = ip_vs_info_seq_next, | |
1940 | .stop = ip_vs_info_seq_stop, | |
1941 | .show = ip_vs_info_seq_show, | |
1942 | }; | |
1943 | ||
1944 | static int ip_vs_info_open(struct inode *inode, struct file *file) | |
1945 | { | |
fc723250 | 1946 | return seq_open_net(inode, file, &ip_vs_info_seq_ops, |
cf7732e4 | 1947 | sizeof(struct ip_vs_iter)); |
1da177e4 LT |
1948 | } |
1949 | ||
9a32144e | 1950 | static const struct file_operations ip_vs_info_fops = { |
1da177e4 LT |
1951 | .owner = THIS_MODULE, |
1952 | .open = ip_vs_info_open, | |
1953 | .read = seq_read, | |
1954 | .llseek = seq_lseek, | |
1955 | .release = seq_release_private, | |
1956 | }; | |
1957 | ||
1958 | #endif | |
1959 | ||
1da177e4 LT |
1960 | #ifdef CONFIG_PROC_FS |
1961 | static int ip_vs_stats_show(struct seq_file *seq, void *v) | |
1962 | { | |
b17fc996 HS |
1963 | struct net *net = seq_file_single_net(seq); |
1964 | struct ip_vs_stats *tot_stats = net_ipvs(net)->tot_stats; | |
1da177e4 LT |
1965 | |
1966 | /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */ | |
1967 | seq_puts(seq, | |
1968 | " Total Incoming Outgoing Incoming Outgoing\n"); | |
1969 | seq_printf(seq, | |
1970 | " Conns Packets Packets Bytes Bytes\n"); | |
1971 | ||
b17fc996 HS |
1972 | spin_lock_bh(&tot_stats->lock); |
1973 | seq_printf(seq, "%8X %8X %8X %16LX %16LX\n\n", tot_stats->ustats.conns, | |
1974 | tot_stats->ustats.inpkts, tot_stats->ustats.outpkts, | |
1975 | (unsigned long long) tot_stats->ustats.inbytes, | |
1976 | (unsigned long long) tot_stats->ustats.outbytes); | |
1da177e4 LT |
1977 | |
1978 | /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */ | |
1979 | seq_puts(seq, | |
1980 | " Conns/s Pkts/s Pkts/s Bytes/s Bytes/s\n"); | |
1981 | seq_printf(seq,"%8X %8X %8X %16X %16X\n", | |
b17fc996 HS |
1982 | tot_stats->ustats.cps, |
1983 | tot_stats->ustats.inpps, | |
1984 | tot_stats->ustats.outpps, | |
1985 | tot_stats->ustats.inbps, | |
1986 | tot_stats->ustats.outbps); | |
1987 | spin_unlock_bh(&tot_stats->lock); | |
1da177e4 LT |
1988 | |
1989 | return 0; | |
1990 | } | |
1991 | ||
1992 | static int ip_vs_stats_seq_open(struct inode *inode, struct file *file) | |
1993 | { | |
fc723250 | 1994 | return single_open_net(inode, file, ip_vs_stats_show); |
1da177e4 LT |
1995 | } |
1996 | ||
9a32144e | 1997 | static const struct file_operations ip_vs_stats_fops = { |
1da177e4 LT |
1998 | .owner = THIS_MODULE, |
1999 | .open = ip_vs_stats_seq_open, | |
2000 | .read = seq_read, | |
2001 | .llseek = seq_lseek, | |
2002 | .release = single_release, | |
2003 | }; | |
2004 | ||
b17fc996 HS |
2005 | static int ip_vs_stats_percpu_show(struct seq_file *seq, void *v) |
2006 | { | |
2007 | struct net *net = seq_file_single_net(seq); | |
2008 | struct ip_vs_stats *tot_stats = net_ipvs(net)->tot_stats; | |
2009 | int i; | |
2010 | ||
2011 | /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */ | |
2012 | seq_puts(seq, | |
2013 | " Total Incoming Outgoing Incoming Outgoing\n"); | |
2014 | seq_printf(seq, | |
2015 | "CPU Conns Packets Packets Bytes Bytes\n"); | |
2016 | ||
2017 | for_each_possible_cpu(i) { | |
2018 | struct ip_vs_cpu_stats *u = per_cpu_ptr(net->ipvs->cpustats, i); | |
2019 | seq_printf(seq, "%3X %8X %8X %8X %16LX %16LX\n", | |
2020 | i, u->ustats.conns, u->ustats.inpkts, | |
2021 | u->ustats.outpkts, (__u64)u->ustats.inbytes, | |
2022 | (__u64)u->ustats.outbytes); | |
2023 | } | |
2024 | ||
2025 | spin_lock_bh(&tot_stats->lock); | |
2026 | seq_printf(seq, " ~ %8X %8X %8X %16LX %16LX\n\n", | |
2027 | tot_stats->ustats.conns, tot_stats->ustats.inpkts, | |
2028 | tot_stats->ustats.outpkts, | |
2029 | (unsigned long long) tot_stats->ustats.inbytes, | |
2030 | (unsigned long long) tot_stats->ustats.outbytes); | |
2031 | ||
2032 | /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */ | |
2033 | seq_puts(seq, | |
2034 | " Conns/s Pkts/s Pkts/s Bytes/s Bytes/s\n"); | |
2035 | seq_printf(seq, " %8X %8X %8X %16X %16X\n", | |
2036 | tot_stats->ustats.cps, | |
2037 | tot_stats->ustats.inpps, | |
2038 | tot_stats->ustats.outpps, | |
2039 | tot_stats->ustats.inbps, | |
2040 | tot_stats->ustats.outbps); | |
2041 | spin_unlock_bh(&tot_stats->lock); | |
2042 | ||
2043 | return 0; | |
2044 | } | |
2045 | ||
2046 | static int ip_vs_stats_percpu_seq_open(struct inode *inode, struct file *file) | |
2047 | { | |
2048 | return single_open_net(inode, file, ip_vs_stats_percpu_show); | |
2049 | } | |
2050 | ||
2051 | static const struct file_operations ip_vs_stats_percpu_fops = { | |
2052 | .owner = THIS_MODULE, | |
2053 | .open = ip_vs_stats_percpu_seq_open, | |
2054 | .read = seq_read, | |
2055 | .llseek = seq_lseek, | |
2056 | .release = single_release, | |
2057 | }; | |
1da177e4 LT |
2058 | #endif |
2059 | ||
2060 | /* | |
2061 | * Set timeout values for tcp tcpfin udp in the timeout_table. | |
2062 | */ | |
9330419d | 2063 | static int ip_vs_set_timeout(struct net *net, struct ip_vs_timeout_user *u) |
1da177e4 | 2064 | { |
9330419d HS |
2065 | struct ip_vs_proto_data *pd; |
2066 | ||
1da177e4 LT |
2067 | IP_VS_DBG(2, "Setting timeout tcp:%d tcpfin:%d udp:%d\n", |
2068 | u->tcp_timeout, | |
2069 | u->tcp_fin_timeout, | |
2070 | u->udp_timeout); | |
2071 | ||
2072 | #ifdef CONFIG_IP_VS_PROTO_TCP | |
2073 | if (u->tcp_timeout) { | |
9330419d HS |
2074 | pd = ip_vs_proto_data_get(net, IPPROTO_TCP); |
2075 | pd->timeout_table[IP_VS_TCP_S_ESTABLISHED] | |
1da177e4 LT |
2076 | = u->tcp_timeout * HZ; |
2077 | } | |
2078 | ||
2079 | if (u->tcp_fin_timeout) { | |
9330419d HS |
2080 | pd = ip_vs_proto_data_get(net, IPPROTO_TCP); |
2081 | pd->timeout_table[IP_VS_TCP_S_FIN_WAIT] | |
1da177e4 LT |
2082 | = u->tcp_fin_timeout * HZ; |
2083 | } | |
2084 | #endif | |
2085 | ||
2086 | #ifdef CONFIG_IP_VS_PROTO_UDP | |
2087 | if (u->udp_timeout) { | |
9330419d HS |
2088 | pd = ip_vs_proto_data_get(net, IPPROTO_UDP); |
2089 | pd->timeout_table[IP_VS_UDP_S_NORMAL] | |
1da177e4 LT |
2090 | = u->udp_timeout * HZ; |
2091 | } | |
2092 | #endif | |
2093 | return 0; | |
2094 | } | |
2095 | ||
2096 | ||
2097 | #define SET_CMDID(cmd) (cmd - IP_VS_BASE_CTL) | |
2098 | #define SERVICE_ARG_LEN (sizeof(struct ip_vs_service_user)) | |
2099 | #define SVCDEST_ARG_LEN (sizeof(struct ip_vs_service_user) + \ | |
2100 | sizeof(struct ip_vs_dest_user)) | |
2101 | #define TIMEOUT_ARG_LEN (sizeof(struct ip_vs_timeout_user)) | |
2102 | #define DAEMON_ARG_LEN (sizeof(struct ip_vs_daemon_user)) | |
2103 | #define MAX_ARG_LEN SVCDEST_ARG_LEN | |
2104 | ||
9b5b5cff | 2105 | static const unsigned char set_arglen[SET_CMDID(IP_VS_SO_SET_MAX)+1] = { |
1da177e4 LT |
2106 | [SET_CMDID(IP_VS_SO_SET_ADD)] = SERVICE_ARG_LEN, |
2107 | [SET_CMDID(IP_VS_SO_SET_EDIT)] = SERVICE_ARG_LEN, | |
2108 | [SET_CMDID(IP_VS_SO_SET_DEL)] = SERVICE_ARG_LEN, | |
2109 | [SET_CMDID(IP_VS_SO_SET_FLUSH)] = 0, | |
2110 | [SET_CMDID(IP_VS_SO_SET_ADDDEST)] = SVCDEST_ARG_LEN, | |
2111 | [SET_CMDID(IP_VS_SO_SET_DELDEST)] = SVCDEST_ARG_LEN, | |
2112 | [SET_CMDID(IP_VS_SO_SET_EDITDEST)] = SVCDEST_ARG_LEN, | |
2113 | [SET_CMDID(IP_VS_SO_SET_TIMEOUT)] = TIMEOUT_ARG_LEN, | |
2114 | [SET_CMDID(IP_VS_SO_SET_STARTDAEMON)] = DAEMON_ARG_LEN, | |
2115 | [SET_CMDID(IP_VS_SO_SET_STOPDAEMON)] = DAEMON_ARG_LEN, | |
2116 | [SET_CMDID(IP_VS_SO_SET_ZERO)] = SERVICE_ARG_LEN, | |
2117 | }; | |
2118 | ||
c860c6b1 JV |
2119 | static void ip_vs_copy_usvc_compat(struct ip_vs_service_user_kern *usvc, |
2120 | struct ip_vs_service_user *usvc_compat) | |
2121 | { | |
0d1e71b0 SH |
2122 | memset(usvc, 0, sizeof(*usvc)); |
2123 | ||
c860c6b1 JV |
2124 | usvc->af = AF_INET; |
2125 | usvc->protocol = usvc_compat->protocol; | |
2126 | usvc->addr.ip = usvc_compat->addr; | |
2127 | usvc->port = usvc_compat->port; | |
2128 | usvc->fwmark = usvc_compat->fwmark; | |
2129 | ||
2130 | /* Deep copy of sched_name is not needed here */ | |
2131 | usvc->sched_name = usvc_compat->sched_name; | |
2132 | ||
2133 | usvc->flags = usvc_compat->flags; | |
2134 | usvc->timeout = usvc_compat->timeout; | |
2135 | usvc->netmask = usvc_compat->netmask; | |
2136 | } | |
2137 | ||
2138 | static void ip_vs_copy_udest_compat(struct ip_vs_dest_user_kern *udest, | |
2139 | struct ip_vs_dest_user *udest_compat) | |
2140 | { | |
0d1e71b0 SH |
2141 | memset(udest, 0, sizeof(*udest)); |
2142 | ||
c860c6b1 JV |
2143 | udest->addr.ip = udest_compat->addr; |
2144 | udest->port = udest_compat->port; | |
2145 | udest->conn_flags = udest_compat->conn_flags; | |
2146 | udest->weight = udest_compat->weight; | |
2147 | udest->u_threshold = udest_compat->u_threshold; | |
2148 | udest->l_threshold = udest_compat->l_threshold; | |
2149 | } | |
2150 | ||
1da177e4 LT |
2151 | static int |
2152 | do_ip_vs_set_ctl(struct sock *sk, int cmd, void __user *user, unsigned int len) | |
2153 | { | |
fc723250 | 2154 | struct net *net = sock_net(sk); |
1da177e4 LT |
2155 | int ret; |
2156 | unsigned char arg[MAX_ARG_LEN]; | |
c860c6b1 JV |
2157 | struct ip_vs_service_user *usvc_compat; |
2158 | struct ip_vs_service_user_kern usvc; | |
1da177e4 | 2159 | struct ip_vs_service *svc; |
c860c6b1 JV |
2160 | struct ip_vs_dest_user *udest_compat; |
2161 | struct ip_vs_dest_user_kern udest; | |
1da177e4 LT |
2162 | |
2163 | if (!capable(CAP_NET_ADMIN)) | |
2164 | return -EPERM; | |
2165 | ||
04bcef2a AV |
2166 | if (cmd < IP_VS_BASE_CTL || cmd > IP_VS_SO_SET_MAX) |
2167 | return -EINVAL; | |
2168 | if (len < 0 || len > MAX_ARG_LEN) | |
2169 | return -EINVAL; | |
1da177e4 | 2170 | if (len != set_arglen[SET_CMDID(cmd)]) { |
1e3e238e HE |
2171 | pr_err("set_ctl: len %u != %u\n", |
2172 | len, set_arglen[SET_CMDID(cmd)]); | |
1da177e4 LT |
2173 | return -EINVAL; |
2174 | } | |
2175 | ||
2176 | if (copy_from_user(arg, user, len) != 0) | |
2177 | return -EFAULT; | |
2178 | ||
2179 | /* increase the module use count */ | |
2180 | ip_vs_use_count_inc(); | |
2181 | ||
14cc3e2b | 2182 | if (mutex_lock_interruptible(&__ip_vs_mutex)) { |
1da177e4 LT |
2183 | ret = -ERESTARTSYS; |
2184 | goto out_dec; | |
2185 | } | |
2186 | ||
2187 | if (cmd == IP_VS_SO_SET_FLUSH) { | |
2188 | /* Flush the virtual service */ | |
fc723250 | 2189 | ret = ip_vs_flush(net); |
1da177e4 LT |
2190 | goto out_unlock; |
2191 | } else if (cmd == IP_VS_SO_SET_TIMEOUT) { | |
2192 | /* Set timeout values for (tcp tcpfin udp) */ | |
9330419d | 2193 | ret = ip_vs_set_timeout(net, (struct ip_vs_timeout_user *)arg); |
1da177e4 LT |
2194 | goto out_unlock; |
2195 | } else if (cmd == IP_VS_SO_SET_STARTDAEMON) { | |
2196 | struct ip_vs_daemon_user *dm = (struct ip_vs_daemon_user *)arg; | |
f131315f HS |
2197 | ret = start_sync_thread(net, dm->state, dm->mcast_ifn, |
2198 | dm->syncid); | |
1da177e4 LT |
2199 | goto out_unlock; |
2200 | } else if (cmd == IP_VS_SO_SET_STOPDAEMON) { | |
2201 | struct ip_vs_daemon_user *dm = (struct ip_vs_daemon_user *)arg; | |
f131315f | 2202 | ret = stop_sync_thread(net, dm->state); |
1da177e4 LT |
2203 | goto out_unlock; |
2204 | } | |
2205 | ||
c860c6b1 JV |
2206 | usvc_compat = (struct ip_vs_service_user *)arg; |
2207 | udest_compat = (struct ip_vs_dest_user *)(usvc_compat + 1); | |
2208 | ||
2209 | /* We only use the new structs internally, so copy userspace compat | |
2210 | * structs to extended internal versions */ | |
2211 | ip_vs_copy_usvc_compat(&usvc, usvc_compat); | |
2212 | ip_vs_copy_udest_compat(&udest, udest_compat); | |
1da177e4 LT |
2213 | |
2214 | if (cmd == IP_VS_SO_SET_ZERO) { | |
2215 | /* if no service address is set, zero counters in all */ | |
c860c6b1 | 2216 | if (!usvc.fwmark && !usvc.addr.ip && !usvc.port) { |
fc723250 | 2217 | ret = ip_vs_zero_all(net); |
1da177e4 LT |
2218 | goto out_unlock; |
2219 | } | |
2220 | } | |
2221 | ||
2906f66a VMR |
2222 | /* Check for valid protocol: TCP or UDP or SCTP, even for fwmark!=0 */ |
2223 | if (usvc.protocol != IPPROTO_TCP && usvc.protocol != IPPROTO_UDP && | |
2224 | usvc.protocol != IPPROTO_SCTP) { | |
1e3e238e HE |
2225 | pr_err("set_ctl: invalid protocol: %d %pI4:%d %s\n", |
2226 | usvc.protocol, &usvc.addr.ip, | |
2227 | ntohs(usvc.port), usvc.sched_name); | |
1da177e4 LT |
2228 | ret = -EFAULT; |
2229 | goto out_unlock; | |
2230 | } | |
2231 | ||
2232 | /* Lookup the exact service by <protocol, addr, port> or fwmark */ | |
c860c6b1 | 2233 | if (usvc.fwmark == 0) |
fc723250 | 2234 | svc = __ip_vs_service_find(net, usvc.af, usvc.protocol, |
26c15cfd | 2235 | &usvc.addr, usvc.port); |
1da177e4 | 2236 | else |
fc723250 | 2237 | svc = __ip_vs_svc_fwm_find(net, usvc.af, usvc.fwmark); |
1da177e4 LT |
2238 | |
2239 | if (cmd != IP_VS_SO_SET_ADD | |
c860c6b1 | 2240 | && (svc == NULL || svc->protocol != usvc.protocol)) { |
1da177e4 | 2241 | ret = -ESRCH; |
26c15cfd | 2242 | goto out_unlock; |
1da177e4 LT |
2243 | } |
2244 | ||
2245 | switch (cmd) { | |
2246 | case IP_VS_SO_SET_ADD: | |
2247 | if (svc != NULL) | |
2248 | ret = -EEXIST; | |
2249 | else | |
fc723250 | 2250 | ret = ip_vs_add_service(net, &usvc, &svc); |
1da177e4 LT |
2251 | break; |
2252 | case IP_VS_SO_SET_EDIT: | |
c860c6b1 | 2253 | ret = ip_vs_edit_service(svc, &usvc); |
1da177e4 LT |
2254 | break; |
2255 | case IP_VS_SO_SET_DEL: | |
2256 | ret = ip_vs_del_service(svc); | |
2257 | if (!ret) | |
2258 | goto out_unlock; | |
2259 | break; | |
2260 | case IP_VS_SO_SET_ZERO: | |
2261 | ret = ip_vs_zero_service(svc); | |
2262 | break; | |
2263 | case IP_VS_SO_SET_ADDDEST: | |
c860c6b1 | 2264 | ret = ip_vs_add_dest(svc, &udest); |
1da177e4 LT |
2265 | break; |
2266 | case IP_VS_SO_SET_EDITDEST: | |
c860c6b1 | 2267 | ret = ip_vs_edit_dest(svc, &udest); |
1da177e4 LT |
2268 | break; |
2269 | case IP_VS_SO_SET_DELDEST: | |
c860c6b1 | 2270 | ret = ip_vs_del_dest(svc, &udest); |
1da177e4 LT |
2271 | break; |
2272 | default: | |
2273 | ret = -EINVAL; | |
2274 | } | |
2275 | ||
1da177e4 | 2276 | out_unlock: |
14cc3e2b | 2277 | mutex_unlock(&__ip_vs_mutex); |
1da177e4 LT |
2278 | out_dec: |
2279 | /* decrease the module use count */ | |
2280 | ip_vs_use_count_dec(); | |
2281 | ||
2282 | return ret; | |
2283 | } | |
2284 | ||
2285 | ||
2286 | static void | |
2287 | ip_vs_copy_stats(struct ip_vs_stats_user *dst, struct ip_vs_stats *src) | |
2288 | { | |
2289 | spin_lock_bh(&src->lock); | |
e9c0ce23 | 2290 | memcpy(dst, &src->ustats, sizeof(*dst)); |
1da177e4 LT |
2291 | spin_unlock_bh(&src->lock); |
2292 | } | |
2293 | ||
2294 | static void | |
2295 | ip_vs_copy_service(struct ip_vs_service_entry *dst, struct ip_vs_service *src) | |
2296 | { | |
2297 | dst->protocol = src->protocol; | |
e7ade46a | 2298 | dst->addr = src->addr.ip; |
1da177e4 LT |
2299 | dst->port = src->port; |
2300 | dst->fwmark = src->fwmark; | |
4da62fc7 | 2301 | strlcpy(dst->sched_name, src->scheduler->name, sizeof(dst->sched_name)); |
1da177e4 LT |
2302 | dst->flags = src->flags; |
2303 | dst->timeout = src->timeout / HZ; | |
2304 | dst->netmask = src->netmask; | |
2305 | dst->num_dests = src->num_dests; | |
2306 | ip_vs_copy_stats(&dst->stats, &src->stats); | |
2307 | } | |
2308 | ||
2309 | static inline int | |
fc723250 HS |
2310 | __ip_vs_get_service_entries(struct net *net, |
2311 | const struct ip_vs_get_services *get, | |
1da177e4 LT |
2312 | struct ip_vs_get_services __user *uptr) |
2313 | { | |
2314 | int idx, count=0; | |
2315 | struct ip_vs_service *svc; | |
2316 | struct ip_vs_service_entry entry; | |
2317 | int ret = 0; | |
2318 | ||
2319 | for (idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { | |
2320 | list_for_each_entry(svc, &ip_vs_svc_table[idx], s_list) { | |
f94fd041 | 2321 | /* Only expose IPv4 entries to old interface */ |
fc723250 | 2322 | if (svc->af != AF_INET || !net_eq(svc->net, net)) |
f94fd041 JV |
2323 | continue; |
2324 | ||
1da177e4 LT |
2325 | if (count >= get->num_services) |
2326 | goto out; | |
4da62fc7 | 2327 | memset(&entry, 0, sizeof(entry)); |
1da177e4 LT |
2328 | ip_vs_copy_service(&entry, svc); |
2329 | if (copy_to_user(&uptr->entrytable[count], | |
2330 | &entry, sizeof(entry))) { | |
2331 | ret = -EFAULT; | |
2332 | goto out; | |
2333 | } | |
2334 | count++; | |
2335 | } | |
2336 | } | |
2337 | ||
2338 | for (idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { | |
2339 | list_for_each_entry(svc, &ip_vs_svc_fwm_table[idx], f_list) { | |
f94fd041 | 2340 | /* Only expose IPv4 entries to old interface */ |
fc723250 | 2341 | if (svc->af != AF_INET || !net_eq(svc->net, net)) |
f94fd041 JV |
2342 | continue; |
2343 | ||
1da177e4 LT |
2344 | if (count >= get->num_services) |
2345 | goto out; | |
4da62fc7 | 2346 | memset(&entry, 0, sizeof(entry)); |
1da177e4 LT |
2347 | ip_vs_copy_service(&entry, svc); |
2348 | if (copy_to_user(&uptr->entrytable[count], | |
2349 | &entry, sizeof(entry))) { | |
2350 | ret = -EFAULT; | |
2351 | goto out; | |
2352 | } | |
2353 | count++; | |
2354 | } | |
2355 | } | |
2356 | out: | |
2357 | return ret; | |
2358 | } | |
2359 | ||
2360 | static inline int | |
fc723250 | 2361 | __ip_vs_get_dest_entries(struct net *net, const struct ip_vs_get_dests *get, |
1da177e4 LT |
2362 | struct ip_vs_get_dests __user *uptr) |
2363 | { | |
2364 | struct ip_vs_service *svc; | |
b18610de | 2365 | union nf_inet_addr addr = { .ip = get->addr }; |
1da177e4 LT |
2366 | int ret = 0; |
2367 | ||
2368 | if (get->fwmark) | |
fc723250 | 2369 | svc = __ip_vs_svc_fwm_find(net, AF_INET, get->fwmark); |
1da177e4 | 2370 | else |
fc723250 | 2371 | svc = __ip_vs_service_find(net, AF_INET, get->protocol, &addr, |
26c15cfd | 2372 | get->port); |
b18610de | 2373 | |
1da177e4 LT |
2374 | if (svc) { |
2375 | int count = 0; | |
2376 | struct ip_vs_dest *dest; | |
2377 | struct ip_vs_dest_entry entry; | |
2378 | ||
2379 | list_for_each_entry(dest, &svc->destinations, n_list) { | |
2380 | if (count >= get->num_dests) | |
2381 | break; | |
2382 | ||
e7ade46a | 2383 | entry.addr = dest->addr.ip; |
1da177e4 LT |
2384 | entry.port = dest->port; |
2385 | entry.conn_flags = atomic_read(&dest->conn_flags); | |
2386 | entry.weight = atomic_read(&dest->weight); | |
2387 | entry.u_threshold = dest->u_threshold; | |
2388 | entry.l_threshold = dest->l_threshold; | |
2389 | entry.activeconns = atomic_read(&dest->activeconns); | |
2390 | entry.inactconns = atomic_read(&dest->inactconns); | |
2391 | entry.persistconns = atomic_read(&dest->persistconns); | |
2392 | ip_vs_copy_stats(&entry.stats, &dest->stats); | |
2393 | if (copy_to_user(&uptr->entrytable[count], | |
2394 | &entry, sizeof(entry))) { | |
2395 | ret = -EFAULT; | |
2396 | break; | |
2397 | } | |
2398 | count++; | |
2399 | } | |
1da177e4 LT |
2400 | } else |
2401 | ret = -ESRCH; | |
2402 | return ret; | |
2403 | } | |
2404 | ||
2405 | static inline void | |
9330419d | 2406 | __ip_vs_get_timeouts(struct net *net, struct ip_vs_timeout_user *u) |
1da177e4 | 2407 | { |
9330419d HS |
2408 | struct ip_vs_proto_data *pd; |
2409 | ||
1da177e4 | 2410 | #ifdef CONFIG_IP_VS_PROTO_TCP |
9330419d HS |
2411 | pd = ip_vs_proto_data_get(net, IPPROTO_TCP); |
2412 | u->tcp_timeout = pd->timeout_table[IP_VS_TCP_S_ESTABLISHED] / HZ; | |
2413 | u->tcp_fin_timeout = pd->timeout_table[IP_VS_TCP_S_FIN_WAIT] / HZ; | |
1da177e4 LT |
2414 | #endif |
2415 | #ifdef CONFIG_IP_VS_PROTO_UDP | |
9330419d | 2416 | pd = ip_vs_proto_data_get(net, IPPROTO_UDP); |
1da177e4 | 2417 | u->udp_timeout = |
9330419d | 2418 | pd->timeout_table[IP_VS_UDP_S_NORMAL] / HZ; |
1da177e4 LT |
2419 | #endif |
2420 | } | |
2421 | ||
2422 | ||
2423 | #define GET_CMDID(cmd) (cmd - IP_VS_BASE_CTL) | |
2424 | #define GET_INFO_ARG_LEN (sizeof(struct ip_vs_getinfo)) | |
2425 | #define GET_SERVICES_ARG_LEN (sizeof(struct ip_vs_get_services)) | |
2426 | #define GET_SERVICE_ARG_LEN (sizeof(struct ip_vs_service_entry)) | |
2427 | #define GET_DESTS_ARG_LEN (sizeof(struct ip_vs_get_dests)) | |
2428 | #define GET_TIMEOUT_ARG_LEN (sizeof(struct ip_vs_timeout_user)) | |
2429 | #define GET_DAEMON_ARG_LEN (sizeof(struct ip_vs_daemon_user) * 2) | |
2430 | ||
9b5b5cff | 2431 | static const unsigned char get_arglen[GET_CMDID(IP_VS_SO_GET_MAX)+1] = { |
1da177e4 LT |
2432 | [GET_CMDID(IP_VS_SO_GET_VERSION)] = 64, |
2433 | [GET_CMDID(IP_VS_SO_GET_INFO)] = GET_INFO_ARG_LEN, | |
2434 | [GET_CMDID(IP_VS_SO_GET_SERVICES)] = GET_SERVICES_ARG_LEN, | |
2435 | [GET_CMDID(IP_VS_SO_GET_SERVICE)] = GET_SERVICE_ARG_LEN, | |
2436 | [GET_CMDID(IP_VS_SO_GET_DESTS)] = GET_DESTS_ARG_LEN, | |
2437 | [GET_CMDID(IP_VS_SO_GET_TIMEOUT)] = GET_TIMEOUT_ARG_LEN, | |
2438 | [GET_CMDID(IP_VS_SO_GET_DAEMON)] = GET_DAEMON_ARG_LEN, | |
2439 | }; | |
2440 | ||
2441 | static int | |
2442 | do_ip_vs_get_ctl(struct sock *sk, int cmd, void __user *user, int *len) | |
2443 | { | |
2444 | unsigned char arg[128]; | |
2445 | int ret = 0; | |
04bcef2a | 2446 | unsigned int copylen; |
fc723250 | 2447 | struct net *net = sock_net(sk); |
f131315f | 2448 | struct netns_ipvs *ipvs = net_ipvs(net); |
1da177e4 | 2449 | |
fc723250 | 2450 | BUG_ON(!net); |
1da177e4 LT |
2451 | if (!capable(CAP_NET_ADMIN)) |
2452 | return -EPERM; | |
2453 | ||
04bcef2a AV |
2454 | if (cmd < IP_VS_BASE_CTL || cmd > IP_VS_SO_GET_MAX) |
2455 | return -EINVAL; | |
2456 | ||
1da177e4 | 2457 | if (*len < get_arglen[GET_CMDID(cmd)]) { |
1e3e238e HE |
2458 | pr_err("get_ctl: len %u < %u\n", |
2459 | *len, get_arglen[GET_CMDID(cmd)]); | |
1da177e4 LT |
2460 | return -EINVAL; |
2461 | } | |
2462 | ||
04bcef2a AV |
2463 | copylen = get_arglen[GET_CMDID(cmd)]; |
2464 | if (copylen > 128) | |
2465 | return -EINVAL; | |
2466 | ||
2467 | if (copy_from_user(arg, user, copylen) != 0) | |
1da177e4 LT |
2468 | return -EFAULT; |
2469 | ||
14cc3e2b | 2470 | if (mutex_lock_interruptible(&__ip_vs_mutex)) |
1da177e4 LT |
2471 | return -ERESTARTSYS; |
2472 | ||
2473 | switch (cmd) { | |
2474 | case IP_VS_SO_GET_VERSION: | |
2475 | { | |
2476 | char buf[64]; | |
2477 | ||
2478 | sprintf(buf, "IP Virtual Server version %d.%d.%d (size=%d)", | |
6f7edb48 | 2479 | NVERSION(IP_VS_VERSION_CODE), ip_vs_conn_tab_size); |
1da177e4 LT |
2480 | if (copy_to_user(user, buf, strlen(buf)+1) != 0) { |
2481 | ret = -EFAULT; | |
2482 | goto out; | |
2483 | } | |
2484 | *len = strlen(buf)+1; | |
2485 | } | |
2486 | break; | |
2487 | ||
2488 | case IP_VS_SO_GET_INFO: | |
2489 | { | |
2490 | struct ip_vs_getinfo info; | |
2491 | info.version = IP_VS_VERSION_CODE; | |
6f7edb48 | 2492 | info.size = ip_vs_conn_tab_size; |
a0840e2e | 2493 | info.num_services = ipvs->num_services; |
1da177e4 LT |
2494 | if (copy_to_user(user, &info, sizeof(info)) != 0) |
2495 | ret = -EFAULT; | |
2496 | } | |
2497 | break; | |
2498 | ||
2499 | case IP_VS_SO_GET_SERVICES: | |
2500 | { | |
2501 | struct ip_vs_get_services *get; | |
2502 | int size; | |
2503 | ||
2504 | get = (struct ip_vs_get_services *)arg; | |
2505 | size = sizeof(*get) + | |
2506 | sizeof(struct ip_vs_service_entry) * get->num_services; | |
2507 | if (*len != size) { | |
1e3e238e | 2508 | pr_err("length: %u != %u\n", *len, size); |
1da177e4 LT |
2509 | ret = -EINVAL; |
2510 | goto out; | |
2511 | } | |
fc723250 | 2512 | ret = __ip_vs_get_service_entries(net, get, user); |
1da177e4 LT |
2513 | } |
2514 | break; | |
2515 | ||
2516 | case IP_VS_SO_GET_SERVICE: | |
2517 | { | |
2518 | struct ip_vs_service_entry *entry; | |
2519 | struct ip_vs_service *svc; | |
b18610de | 2520 | union nf_inet_addr addr; |
1da177e4 LT |
2521 | |
2522 | entry = (struct ip_vs_service_entry *)arg; | |
b18610de | 2523 | addr.ip = entry->addr; |
1da177e4 | 2524 | if (entry->fwmark) |
fc723250 | 2525 | svc = __ip_vs_svc_fwm_find(net, AF_INET, entry->fwmark); |
1da177e4 | 2526 | else |
fc723250 HS |
2527 | svc = __ip_vs_service_find(net, AF_INET, |
2528 | entry->protocol, &addr, | |
2529 | entry->port); | |
1da177e4 LT |
2530 | if (svc) { |
2531 | ip_vs_copy_service(entry, svc); | |
2532 | if (copy_to_user(user, entry, sizeof(*entry)) != 0) | |
2533 | ret = -EFAULT; | |
1da177e4 LT |
2534 | } else |
2535 | ret = -ESRCH; | |
2536 | } | |
2537 | break; | |
2538 | ||
2539 | case IP_VS_SO_GET_DESTS: | |
2540 | { | |
2541 | struct ip_vs_get_dests *get; | |
2542 | int size; | |
2543 | ||
2544 | get = (struct ip_vs_get_dests *)arg; | |
2545 | size = sizeof(*get) + | |
2546 | sizeof(struct ip_vs_dest_entry) * get->num_dests; | |
2547 | if (*len != size) { | |
1e3e238e | 2548 | pr_err("length: %u != %u\n", *len, size); |
1da177e4 LT |
2549 | ret = -EINVAL; |
2550 | goto out; | |
2551 | } | |
fc723250 | 2552 | ret = __ip_vs_get_dest_entries(net, get, user); |
1da177e4 LT |
2553 | } |
2554 | break; | |
2555 | ||
2556 | case IP_VS_SO_GET_TIMEOUT: | |
2557 | { | |
2558 | struct ip_vs_timeout_user t; | |
2559 | ||
9330419d | 2560 | __ip_vs_get_timeouts(net, &t); |
1da177e4 LT |
2561 | if (copy_to_user(user, &t, sizeof(t)) != 0) |
2562 | ret = -EFAULT; | |
2563 | } | |
2564 | break; | |
2565 | ||
2566 | case IP_VS_SO_GET_DAEMON: | |
2567 | { | |
2568 | struct ip_vs_daemon_user d[2]; | |
2569 | ||
2570 | memset(&d, 0, sizeof(d)); | |
f131315f | 2571 | if (ipvs->sync_state & IP_VS_STATE_MASTER) { |
1da177e4 | 2572 | d[0].state = IP_VS_STATE_MASTER; |
f131315f HS |
2573 | strlcpy(d[0].mcast_ifn, ipvs->master_mcast_ifn, |
2574 | sizeof(d[0].mcast_ifn)); | |
2575 | d[0].syncid = ipvs->master_syncid; | |
1da177e4 | 2576 | } |
f131315f | 2577 | if (ipvs->sync_state & IP_VS_STATE_BACKUP) { |
1da177e4 | 2578 | d[1].state = IP_VS_STATE_BACKUP; |
f131315f HS |
2579 | strlcpy(d[1].mcast_ifn, ipvs->backup_mcast_ifn, |
2580 | sizeof(d[1].mcast_ifn)); | |
2581 | d[1].syncid = ipvs->backup_syncid; | |
1da177e4 LT |
2582 | } |
2583 | if (copy_to_user(user, &d, sizeof(d)) != 0) | |
2584 | ret = -EFAULT; | |
2585 | } | |
2586 | break; | |
2587 | ||
2588 | default: | |
2589 | ret = -EINVAL; | |
2590 | } | |
2591 | ||
2592 | out: | |
14cc3e2b | 2593 | mutex_unlock(&__ip_vs_mutex); |
1da177e4 LT |
2594 | return ret; |
2595 | } | |
2596 | ||
2597 | ||
2598 | static struct nf_sockopt_ops ip_vs_sockopts = { | |
2599 | .pf = PF_INET, | |
2600 | .set_optmin = IP_VS_BASE_CTL, | |
2601 | .set_optmax = IP_VS_SO_SET_MAX+1, | |
2602 | .set = do_ip_vs_set_ctl, | |
2603 | .get_optmin = IP_VS_BASE_CTL, | |
2604 | .get_optmax = IP_VS_SO_GET_MAX+1, | |
2605 | .get = do_ip_vs_get_ctl, | |
16fcec35 | 2606 | .owner = THIS_MODULE, |
1da177e4 LT |
2607 | }; |
2608 | ||
9a812198 JV |
2609 | /* |
2610 | * Generic Netlink interface | |
2611 | */ | |
2612 | ||
2613 | /* IPVS genetlink family */ | |
2614 | static struct genl_family ip_vs_genl_family = { | |
2615 | .id = GENL_ID_GENERATE, | |
2616 | .hdrsize = 0, | |
2617 | .name = IPVS_GENL_NAME, | |
2618 | .version = IPVS_GENL_VERSION, | |
2619 | .maxattr = IPVS_CMD_MAX, | |
c6d2d445 | 2620 | .netnsok = true, /* Make ipvsadm to work on netns */ |
9a812198 JV |
2621 | }; |
2622 | ||
2623 | /* Policy used for first-level command attributes */ | |
2624 | static const struct nla_policy ip_vs_cmd_policy[IPVS_CMD_ATTR_MAX + 1] = { | |
2625 | [IPVS_CMD_ATTR_SERVICE] = { .type = NLA_NESTED }, | |
2626 | [IPVS_CMD_ATTR_DEST] = { .type = NLA_NESTED }, | |
2627 | [IPVS_CMD_ATTR_DAEMON] = { .type = NLA_NESTED }, | |
2628 | [IPVS_CMD_ATTR_TIMEOUT_TCP] = { .type = NLA_U32 }, | |
2629 | [IPVS_CMD_ATTR_TIMEOUT_TCP_FIN] = { .type = NLA_U32 }, | |
2630 | [IPVS_CMD_ATTR_TIMEOUT_UDP] = { .type = NLA_U32 }, | |
2631 | }; | |
2632 | ||
2633 | /* Policy used for attributes in nested attribute IPVS_CMD_ATTR_DAEMON */ | |
2634 | static const struct nla_policy ip_vs_daemon_policy[IPVS_DAEMON_ATTR_MAX + 1] = { | |
2635 | [IPVS_DAEMON_ATTR_STATE] = { .type = NLA_U32 }, | |
2636 | [IPVS_DAEMON_ATTR_MCAST_IFN] = { .type = NLA_NUL_STRING, | |
2637 | .len = IP_VS_IFNAME_MAXLEN }, | |
2638 | [IPVS_DAEMON_ATTR_SYNC_ID] = { .type = NLA_U32 }, | |
2639 | }; | |
2640 | ||
2641 | /* Policy used for attributes in nested attribute IPVS_CMD_ATTR_SERVICE */ | |
2642 | static const struct nla_policy ip_vs_svc_policy[IPVS_SVC_ATTR_MAX + 1] = { | |
2643 | [IPVS_SVC_ATTR_AF] = { .type = NLA_U16 }, | |
2644 | [IPVS_SVC_ATTR_PROTOCOL] = { .type = NLA_U16 }, | |
2645 | [IPVS_SVC_ATTR_ADDR] = { .type = NLA_BINARY, | |
2646 | .len = sizeof(union nf_inet_addr) }, | |
2647 | [IPVS_SVC_ATTR_PORT] = { .type = NLA_U16 }, | |
2648 | [IPVS_SVC_ATTR_FWMARK] = { .type = NLA_U32 }, | |
2649 | [IPVS_SVC_ATTR_SCHED_NAME] = { .type = NLA_NUL_STRING, | |
2650 | .len = IP_VS_SCHEDNAME_MAXLEN }, | |
0d1e71b0 SH |
2651 | [IPVS_SVC_ATTR_PE_NAME] = { .type = NLA_NUL_STRING, |
2652 | .len = IP_VS_PENAME_MAXLEN }, | |
9a812198 JV |
2653 | [IPVS_SVC_ATTR_FLAGS] = { .type = NLA_BINARY, |
2654 | .len = sizeof(struct ip_vs_flags) }, | |
2655 | [IPVS_SVC_ATTR_TIMEOUT] = { .type = NLA_U32 }, | |
2656 | [IPVS_SVC_ATTR_NETMASK] = { .type = NLA_U32 }, | |
2657 | [IPVS_SVC_ATTR_STATS] = { .type = NLA_NESTED }, | |
2658 | }; | |
2659 | ||
2660 | /* Policy used for attributes in nested attribute IPVS_CMD_ATTR_DEST */ | |
2661 | static const struct nla_policy ip_vs_dest_policy[IPVS_DEST_ATTR_MAX + 1] = { | |
2662 | [IPVS_DEST_ATTR_ADDR] = { .type = NLA_BINARY, | |
2663 | .len = sizeof(union nf_inet_addr) }, | |
2664 | [IPVS_DEST_ATTR_PORT] = { .type = NLA_U16 }, | |
2665 | [IPVS_DEST_ATTR_FWD_METHOD] = { .type = NLA_U32 }, | |
2666 | [IPVS_DEST_ATTR_WEIGHT] = { .type = NLA_U32 }, | |
2667 | [IPVS_DEST_ATTR_U_THRESH] = { .type = NLA_U32 }, | |
2668 | [IPVS_DEST_ATTR_L_THRESH] = { .type = NLA_U32 }, | |
2669 | [IPVS_DEST_ATTR_ACTIVE_CONNS] = { .type = NLA_U32 }, | |
2670 | [IPVS_DEST_ATTR_INACT_CONNS] = { .type = NLA_U32 }, | |
2671 | [IPVS_DEST_ATTR_PERSIST_CONNS] = { .type = NLA_U32 }, | |
2672 | [IPVS_DEST_ATTR_STATS] = { .type = NLA_NESTED }, | |
2673 | }; | |
2674 | ||
2675 | static int ip_vs_genl_fill_stats(struct sk_buff *skb, int container_type, | |
2676 | struct ip_vs_stats *stats) | |
2677 | { | |
2678 | struct nlattr *nl_stats = nla_nest_start(skb, container_type); | |
2679 | if (!nl_stats) | |
2680 | return -EMSGSIZE; | |
2681 | ||
2682 | spin_lock_bh(&stats->lock); | |
2683 | ||
e9c0ce23 SW |
2684 | NLA_PUT_U32(skb, IPVS_STATS_ATTR_CONNS, stats->ustats.conns); |
2685 | NLA_PUT_U32(skb, IPVS_STATS_ATTR_INPKTS, stats->ustats.inpkts); | |
2686 | NLA_PUT_U32(skb, IPVS_STATS_ATTR_OUTPKTS, stats->ustats.outpkts); | |
2687 | NLA_PUT_U64(skb, IPVS_STATS_ATTR_INBYTES, stats->ustats.inbytes); | |
2688 | NLA_PUT_U64(skb, IPVS_STATS_ATTR_OUTBYTES, stats->ustats.outbytes); | |
2689 | NLA_PUT_U32(skb, IPVS_STATS_ATTR_CPS, stats->ustats.cps); | |
2690 | NLA_PUT_U32(skb, IPVS_STATS_ATTR_INPPS, stats->ustats.inpps); | |
2691 | NLA_PUT_U32(skb, IPVS_STATS_ATTR_OUTPPS, stats->ustats.outpps); | |
2692 | NLA_PUT_U32(skb, IPVS_STATS_ATTR_INBPS, stats->ustats.inbps); | |
2693 | NLA_PUT_U32(skb, IPVS_STATS_ATTR_OUTBPS, stats->ustats.outbps); | |
9a812198 JV |
2694 | |
2695 | spin_unlock_bh(&stats->lock); | |
2696 | ||
2697 | nla_nest_end(skb, nl_stats); | |
2698 | ||
2699 | return 0; | |
2700 | ||
2701 | nla_put_failure: | |
2702 | spin_unlock_bh(&stats->lock); | |
2703 | nla_nest_cancel(skb, nl_stats); | |
2704 | return -EMSGSIZE; | |
2705 | } | |
2706 | ||
2707 | static int ip_vs_genl_fill_service(struct sk_buff *skb, | |
2708 | struct ip_vs_service *svc) | |
2709 | { | |
2710 | struct nlattr *nl_service; | |
2711 | struct ip_vs_flags flags = { .flags = svc->flags, | |
2712 | .mask = ~0 }; | |
2713 | ||
2714 | nl_service = nla_nest_start(skb, IPVS_CMD_ATTR_SERVICE); | |
2715 | if (!nl_service) | |
2716 | return -EMSGSIZE; | |
2717 | ||
f94fd041 | 2718 | NLA_PUT_U16(skb, IPVS_SVC_ATTR_AF, svc->af); |
9a812198 JV |
2719 | |
2720 | if (svc->fwmark) { | |
2721 | NLA_PUT_U32(skb, IPVS_SVC_ATTR_FWMARK, svc->fwmark); | |
2722 | } else { | |
2723 | NLA_PUT_U16(skb, IPVS_SVC_ATTR_PROTOCOL, svc->protocol); | |
2724 | NLA_PUT(skb, IPVS_SVC_ATTR_ADDR, sizeof(svc->addr), &svc->addr); | |
2725 | NLA_PUT_U16(skb, IPVS_SVC_ATTR_PORT, svc->port); | |
2726 | } | |
2727 | ||
2728 | NLA_PUT_STRING(skb, IPVS_SVC_ATTR_SCHED_NAME, svc->scheduler->name); | |
0d1e71b0 SH |
2729 | if (svc->pe) |
2730 | NLA_PUT_STRING(skb, IPVS_SVC_ATTR_PE_NAME, svc->pe->name); | |
9a812198 JV |
2731 | NLA_PUT(skb, IPVS_SVC_ATTR_FLAGS, sizeof(flags), &flags); |
2732 | NLA_PUT_U32(skb, IPVS_SVC_ATTR_TIMEOUT, svc->timeout / HZ); | |
2733 | NLA_PUT_U32(skb, IPVS_SVC_ATTR_NETMASK, svc->netmask); | |
2734 | ||
2735 | if (ip_vs_genl_fill_stats(skb, IPVS_SVC_ATTR_STATS, &svc->stats)) | |
2736 | goto nla_put_failure; | |
2737 | ||
2738 | nla_nest_end(skb, nl_service); | |
2739 | ||
2740 | return 0; | |
2741 | ||
2742 | nla_put_failure: | |
2743 | nla_nest_cancel(skb, nl_service); | |
2744 | return -EMSGSIZE; | |
2745 | } | |
2746 | ||
2747 | static int ip_vs_genl_dump_service(struct sk_buff *skb, | |
2748 | struct ip_vs_service *svc, | |
2749 | struct netlink_callback *cb) | |
2750 | { | |
2751 | void *hdr; | |
2752 | ||
2753 | hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).pid, cb->nlh->nlmsg_seq, | |
2754 | &ip_vs_genl_family, NLM_F_MULTI, | |
2755 | IPVS_CMD_NEW_SERVICE); | |
2756 | if (!hdr) | |
2757 | return -EMSGSIZE; | |
2758 | ||
2759 | if (ip_vs_genl_fill_service(skb, svc) < 0) | |
2760 | goto nla_put_failure; | |
2761 | ||
2762 | return genlmsg_end(skb, hdr); | |
2763 | ||
2764 | nla_put_failure: | |
2765 | genlmsg_cancel(skb, hdr); | |
2766 | return -EMSGSIZE; | |
2767 | } | |
2768 | ||
2769 | static int ip_vs_genl_dump_services(struct sk_buff *skb, | |
2770 | struct netlink_callback *cb) | |
2771 | { | |
2772 | int idx = 0, i; | |
2773 | int start = cb->args[0]; | |
2774 | struct ip_vs_service *svc; | |
fc723250 | 2775 | struct net *net = skb_sknet(skb); |
9a812198 JV |
2776 | |
2777 | mutex_lock(&__ip_vs_mutex); | |
2778 | for (i = 0; i < IP_VS_SVC_TAB_SIZE; i++) { | |
2779 | list_for_each_entry(svc, &ip_vs_svc_table[i], s_list) { | |
fc723250 | 2780 | if (++idx <= start || !net_eq(svc->net, net)) |
9a812198 JV |
2781 | continue; |
2782 | if (ip_vs_genl_dump_service(skb, svc, cb) < 0) { | |
2783 | idx--; | |
2784 | goto nla_put_failure; | |
2785 | } | |
2786 | } | |
2787 | } | |
2788 | ||
2789 | for (i = 0; i < IP_VS_SVC_TAB_SIZE; i++) { | |
2790 | list_for_each_entry(svc, &ip_vs_svc_fwm_table[i], f_list) { | |
fc723250 | 2791 | if (++idx <= start || !net_eq(svc->net, net)) |
9a812198 JV |
2792 | continue; |
2793 | if (ip_vs_genl_dump_service(skb, svc, cb) < 0) { | |
2794 | idx--; | |
2795 | goto nla_put_failure; | |
2796 | } | |
2797 | } | |
2798 | } | |
2799 | ||
2800 | nla_put_failure: | |
2801 | mutex_unlock(&__ip_vs_mutex); | |
2802 | cb->args[0] = idx; | |
2803 | ||
2804 | return skb->len; | |
2805 | } | |
2806 | ||
fc723250 HS |
2807 | static int ip_vs_genl_parse_service(struct net *net, |
2808 | struct ip_vs_service_user_kern *usvc, | |
26c15cfd JA |
2809 | struct nlattr *nla, int full_entry, |
2810 | struct ip_vs_service **ret_svc) | |
9a812198 JV |
2811 | { |
2812 | struct nlattr *attrs[IPVS_SVC_ATTR_MAX + 1]; | |
2813 | struct nlattr *nla_af, *nla_port, *nla_fwmark, *nla_protocol, *nla_addr; | |
26c15cfd | 2814 | struct ip_vs_service *svc; |
9a812198 JV |
2815 | |
2816 | /* Parse mandatory identifying service fields first */ | |
2817 | if (nla == NULL || | |
2818 | nla_parse_nested(attrs, IPVS_SVC_ATTR_MAX, nla, ip_vs_svc_policy)) | |
2819 | return -EINVAL; | |
2820 | ||
2821 | nla_af = attrs[IPVS_SVC_ATTR_AF]; | |
2822 | nla_protocol = attrs[IPVS_SVC_ATTR_PROTOCOL]; | |
2823 | nla_addr = attrs[IPVS_SVC_ATTR_ADDR]; | |
2824 | nla_port = attrs[IPVS_SVC_ATTR_PORT]; | |
2825 | nla_fwmark = attrs[IPVS_SVC_ATTR_FWMARK]; | |
2826 | ||
2827 | if (!(nla_af && (nla_fwmark || (nla_port && nla_protocol && nla_addr)))) | |
2828 | return -EINVAL; | |
2829 | ||
258c8893 SH |
2830 | memset(usvc, 0, sizeof(*usvc)); |
2831 | ||
c860c6b1 | 2832 | usvc->af = nla_get_u16(nla_af); |
f94fd041 JV |
2833 | #ifdef CONFIG_IP_VS_IPV6 |
2834 | if (usvc->af != AF_INET && usvc->af != AF_INET6) | |
2835 | #else | |
2836 | if (usvc->af != AF_INET) | |
2837 | #endif | |
9a812198 JV |
2838 | return -EAFNOSUPPORT; |
2839 | ||
2840 | if (nla_fwmark) { | |
2841 | usvc->protocol = IPPROTO_TCP; | |
2842 | usvc->fwmark = nla_get_u32(nla_fwmark); | |
2843 | } else { | |
2844 | usvc->protocol = nla_get_u16(nla_protocol); | |
2845 | nla_memcpy(&usvc->addr, nla_addr, sizeof(usvc->addr)); | |
2846 | usvc->port = nla_get_u16(nla_port); | |
2847 | usvc->fwmark = 0; | |
2848 | } | |
2849 | ||
26c15cfd | 2850 | if (usvc->fwmark) |
fc723250 | 2851 | svc = __ip_vs_svc_fwm_find(net, usvc->af, usvc->fwmark); |
26c15cfd | 2852 | else |
fc723250 | 2853 | svc = __ip_vs_service_find(net, usvc->af, usvc->protocol, |
26c15cfd JA |
2854 | &usvc->addr, usvc->port); |
2855 | *ret_svc = svc; | |
2856 | ||
9a812198 JV |
2857 | /* If a full entry was requested, check for the additional fields */ |
2858 | if (full_entry) { | |
0d1e71b0 | 2859 | struct nlattr *nla_sched, *nla_flags, *nla_pe, *nla_timeout, |
9a812198 JV |
2860 | *nla_netmask; |
2861 | struct ip_vs_flags flags; | |
9a812198 JV |
2862 | |
2863 | nla_sched = attrs[IPVS_SVC_ATTR_SCHED_NAME]; | |
0d1e71b0 | 2864 | nla_pe = attrs[IPVS_SVC_ATTR_PE_NAME]; |
9a812198 JV |
2865 | nla_flags = attrs[IPVS_SVC_ATTR_FLAGS]; |
2866 | nla_timeout = attrs[IPVS_SVC_ATTR_TIMEOUT]; | |
2867 | nla_netmask = attrs[IPVS_SVC_ATTR_NETMASK]; | |
2868 | ||
2869 | if (!(nla_sched && nla_flags && nla_timeout && nla_netmask)) | |
2870 | return -EINVAL; | |
2871 | ||
2872 | nla_memcpy(&flags, nla_flags, sizeof(flags)); | |
2873 | ||
2874 | /* prefill flags from service if it already exists */ | |
26c15cfd | 2875 | if (svc) |
9a812198 | 2876 | usvc->flags = svc->flags; |
9a812198 JV |
2877 | |
2878 | /* set new flags from userland */ | |
2879 | usvc->flags = (usvc->flags & ~flags.mask) | | |
2880 | (flags.flags & flags.mask); | |
c860c6b1 | 2881 | usvc->sched_name = nla_data(nla_sched); |
0d1e71b0 | 2882 | usvc->pe_name = nla_pe ? nla_data(nla_pe) : NULL; |
9a812198 JV |
2883 | usvc->timeout = nla_get_u32(nla_timeout); |
2884 | usvc->netmask = nla_get_u32(nla_netmask); | |
2885 | } | |
2886 | ||
2887 | return 0; | |
2888 | } | |
2889 | ||
fc723250 HS |
2890 | static struct ip_vs_service *ip_vs_genl_find_service(struct net *net, |
2891 | struct nlattr *nla) | |
9a812198 | 2892 | { |
c860c6b1 | 2893 | struct ip_vs_service_user_kern usvc; |
26c15cfd | 2894 | struct ip_vs_service *svc; |
9a812198 JV |
2895 | int ret; |
2896 | ||
fc723250 | 2897 | ret = ip_vs_genl_parse_service(net, &usvc, nla, 0, &svc); |
26c15cfd | 2898 | return ret ? ERR_PTR(ret) : svc; |
9a812198 JV |
2899 | } |
2900 | ||
2901 | static int ip_vs_genl_fill_dest(struct sk_buff *skb, struct ip_vs_dest *dest) | |
2902 | { | |
2903 | struct nlattr *nl_dest; | |
2904 | ||
2905 | nl_dest = nla_nest_start(skb, IPVS_CMD_ATTR_DEST); | |
2906 | if (!nl_dest) | |
2907 | return -EMSGSIZE; | |
2908 | ||
2909 | NLA_PUT(skb, IPVS_DEST_ATTR_ADDR, sizeof(dest->addr), &dest->addr); | |
2910 | NLA_PUT_U16(skb, IPVS_DEST_ATTR_PORT, dest->port); | |
2911 | ||
2912 | NLA_PUT_U32(skb, IPVS_DEST_ATTR_FWD_METHOD, | |
2913 | atomic_read(&dest->conn_flags) & IP_VS_CONN_F_FWD_MASK); | |
2914 | NLA_PUT_U32(skb, IPVS_DEST_ATTR_WEIGHT, atomic_read(&dest->weight)); | |
2915 | NLA_PUT_U32(skb, IPVS_DEST_ATTR_U_THRESH, dest->u_threshold); | |
2916 | NLA_PUT_U32(skb, IPVS_DEST_ATTR_L_THRESH, dest->l_threshold); | |
2917 | NLA_PUT_U32(skb, IPVS_DEST_ATTR_ACTIVE_CONNS, | |
2918 | atomic_read(&dest->activeconns)); | |
2919 | NLA_PUT_U32(skb, IPVS_DEST_ATTR_INACT_CONNS, | |
2920 | atomic_read(&dest->inactconns)); | |
2921 | NLA_PUT_U32(skb, IPVS_DEST_ATTR_PERSIST_CONNS, | |
2922 | atomic_read(&dest->persistconns)); | |
2923 | ||
2924 | if (ip_vs_genl_fill_stats(skb, IPVS_DEST_ATTR_STATS, &dest->stats)) | |
2925 | goto nla_put_failure; | |
2926 | ||
2927 | nla_nest_end(skb, nl_dest); | |
2928 | ||
2929 | return 0; | |
2930 | ||
2931 | nla_put_failure: | |
2932 | nla_nest_cancel(skb, nl_dest); | |
2933 | return -EMSGSIZE; | |
2934 | } | |
2935 | ||
2936 | static int ip_vs_genl_dump_dest(struct sk_buff *skb, struct ip_vs_dest *dest, | |
2937 | struct netlink_callback *cb) | |
2938 | { | |
2939 | void *hdr; | |
2940 | ||
2941 | hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).pid, cb->nlh->nlmsg_seq, | |
2942 | &ip_vs_genl_family, NLM_F_MULTI, | |
2943 | IPVS_CMD_NEW_DEST); | |
2944 | if (!hdr) | |
2945 | return -EMSGSIZE; | |
2946 | ||
2947 | if (ip_vs_genl_fill_dest(skb, dest) < 0) | |
2948 | goto nla_put_failure; | |
2949 | ||
2950 | return genlmsg_end(skb, hdr); | |
2951 | ||
2952 | nla_put_failure: | |
2953 | genlmsg_cancel(skb, hdr); | |
2954 | return -EMSGSIZE; | |
2955 | } | |
2956 | ||
2957 | static int ip_vs_genl_dump_dests(struct sk_buff *skb, | |
2958 | struct netlink_callback *cb) | |
2959 | { | |
2960 | int idx = 0; | |
2961 | int start = cb->args[0]; | |
2962 | struct ip_vs_service *svc; | |
2963 | struct ip_vs_dest *dest; | |
2964 | struct nlattr *attrs[IPVS_CMD_ATTR_MAX + 1]; | |
a0840e2e | 2965 | struct net *net = skb_sknet(skb); |
9a812198 JV |
2966 | |
2967 | mutex_lock(&__ip_vs_mutex); | |
2968 | ||
2969 | /* Try to find the service for which to dump destinations */ | |
2970 | if (nlmsg_parse(cb->nlh, GENL_HDRLEN, attrs, | |
2971 | IPVS_CMD_ATTR_MAX, ip_vs_cmd_policy)) | |
2972 | goto out_err; | |
2973 | ||
a0840e2e | 2974 | |
fc723250 | 2975 | svc = ip_vs_genl_find_service(net, attrs[IPVS_CMD_ATTR_SERVICE]); |
9a812198 JV |
2976 | if (IS_ERR(svc) || svc == NULL) |
2977 | goto out_err; | |
2978 | ||
2979 | /* Dump the destinations */ | |
2980 | list_for_each_entry(dest, &svc->destinations, n_list) { | |
2981 | if (++idx <= start) | |
2982 | continue; | |
2983 | if (ip_vs_genl_dump_dest(skb, dest, cb) < 0) { | |
2984 | idx--; | |
2985 | goto nla_put_failure; | |
2986 | } | |
2987 | } | |
2988 | ||
2989 | nla_put_failure: | |
2990 | cb->args[0] = idx; | |
9a812198 JV |
2991 | |
2992 | out_err: | |
2993 | mutex_unlock(&__ip_vs_mutex); | |
2994 | ||
2995 | return skb->len; | |
2996 | } | |
2997 | ||
c860c6b1 | 2998 | static int ip_vs_genl_parse_dest(struct ip_vs_dest_user_kern *udest, |
9a812198 JV |
2999 | struct nlattr *nla, int full_entry) |
3000 | { | |
3001 | struct nlattr *attrs[IPVS_DEST_ATTR_MAX + 1]; | |
3002 | struct nlattr *nla_addr, *nla_port; | |
3003 | ||
3004 | /* Parse mandatory identifying destination fields first */ | |
3005 | if (nla == NULL || | |
3006 | nla_parse_nested(attrs, IPVS_DEST_ATTR_MAX, nla, ip_vs_dest_policy)) | |
3007 | return -EINVAL; | |
3008 | ||
3009 | nla_addr = attrs[IPVS_DEST_ATTR_ADDR]; | |
3010 | nla_port = attrs[IPVS_DEST_ATTR_PORT]; | |
3011 | ||
3012 | if (!(nla_addr && nla_port)) | |
3013 | return -EINVAL; | |
3014 | ||
258c8893 SH |
3015 | memset(udest, 0, sizeof(*udest)); |
3016 | ||
9a812198 JV |
3017 | nla_memcpy(&udest->addr, nla_addr, sizeof(udest->addr)); |
3018 | udest->port = nla_get_u16(nla_port); | |
3019 | ||
3020 | /* If a full entry was requested, check for the additional fields */ | |
3021 | if (full_entry) { | |
3022 | struct nlattr *nla_fwd, *nla_weight, *nla_u_thresh, | |
3023 | *nla_l_thresh; | |
3024 | ||
3025 | nla_fwd = attrs[IPVS_DEST_ATTR_FWD_METHOD]; | |
3026 | nla_weight = attrs[IPVS_DEST_ATTR_WEIGHT]; | |
3027 | nla_u_thresh = attrs[IPVS_DEST_ATTR_U_THRESH]; | |
3028 | nla_l_thresh = attrs[IPVS_DEST_ATTR_L_THRESH]; | |
3029 | ||
3030 | if (!(nla_fwd && nla_weight && nla_u_thresh && nla_l_thresh)) | |
3031 | return -EINVAL; | |
3032 | ||
3033 | udest->conn_flags = nla_get_u32(nla_fwd) | |
3034 | & IP_VS_CONN_F_FWD_MASK; | |
3035 | udest->weight = nla_get_u32(nla_weight); | |
3036 | udest->u_threshold = nla_get_u32(nla_u_thresh); | |
3037 | udest->l_threshold = nla_get_u32(nla_l_thresh); | |
3038 | } | |
3039 | ||
3040 | return 0; | |
3041 | } | |
3042 | ||
3043 | static int ip_vs_genl_fill_daemon(struct sk_buff *skb, __be32 state, | |
3044 | const char *mcast_ifn, __be32 syncid) | |
3045 | { | |
3046 | struct nlattr *nl_daemon; | |
3047 | ||
3048 | nl_daemon = nla_nest_start(skb, IPVS_CMD_ATTR_DAEMON); | |
3049 | if (!nl_daemon) | |
3050 | return -EMSGSIZE; | |
3051 | ||
3052 | NLA_PUT_U32(skb, IPVS_DAEMON_ATTR_STATE, state); | |
3053 | NLA_PUT_STRING(skb, IPVS_DAEMON_ATTR_MCAST_IFN, mcast_ifn); | |
3054 | NLA_PUT_U32(skb, IPVS_DAEMON_ATTR_SYNC_ID, syncid); | |
3055 | ||
3056 | nla_nest_end(skb, nl_daemon); | |
3057 | ||
3058 | return 0; | |
3059 | ||
3060 | nla_put_failure: | |
3061 | nla_nest_cancel(skb, nl_daemon); | |
3062 | return -EMSGSIZE; | |
3063 | } | |
3064 | ||
3065 | static int ip_vs_genl_dump_daemon(struct sk_buff *skb, __be32 state, | |
3066 | const char *mcast_ifn, __be32 syncid, | |
3067 | struct netlink_callback *cb) | |
3068 | { | |
3069 | void *hdr; | |
3070 | hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).pid, cb->nlh->nlmsg_seq, | |
3071 | &ip_vs_genl_family, NLM_F_MULTI, | |
3072 | IPVS_CMD_NEW_DAEMON); | |
3073 | if (!hdr) | |
3074 | return -EMSGSIZE; | |
3075 | ||
3076 | if (ip_vs_genl_fill_daemon(skb, state, mcast_ifn, syncid)) | |
3077 | goto nla_put_failure; | |
3078 | ||
3079 | return genlmsg_end(skb, hdr); | |
3080 | ||
3081 | nla_put_failure: | |
3082 | genlmsg_cancel(skb, hdr); | |
3083 | return -EMSGSIZE; | |
3084 | } | |
3085 | ||
3086 | static int ip_vs_genl_dump_daemons(struct sk_buff *skb, | |
3087 | struct netlink_callback *cb) | |
3088 | { | |
f131315f HS |
3089 | struct net *net = skb_net(skb); |
3090 | struct netns_ipvs *ipvs = net_ipvs(net); | |
3091 | ||
9a812198 | 3092 | mutex_lock(&__ip_vs_mutex); |
f131315f | 3093 | if ((ipvs->sync_state & IP_VS_STATE_MASTER) && !cb->args[0]) { |
9a812198 | 3094 | if (ip_vs_genl_dump_daemon(skb, IP_VS_STATE_MASTER, |
f131315f HS |
3095 | ipvs->master_mcast_ifn, |
3096 | ipvs->master_syncid, cb) < 0) | |
9a812198 JV |
3097 | goto nla_put_failure; |
3098 | ||
3099 | cb->args[0] = 1; | |
3100 | } | |
3101 | ||
f131315f | 3102 | if ((ipvs->sync_state & IP_VS_STATE_BACKUP) && !cb->args[1]) { |
9a812198 | 3103 | if (ip_vs_genl_dump_daemon(skb, IP_VS_STATE_BACKUP, |
f131315f HS |
3104 | ipvs->backup_mcast_ifn, |
3105 | ipvs->backup_syncid, cb) < 0) | |
9a812198 JV |
3106 | goto nla_put_failure; |
3107 | ||
3108 | cb->args[1] = 1; | |
3109 | } | |
3110 | ||
3111 | nla_put_failure: | |
3112 | mutex_unlock(&__ip_vs_mutex); | |
3113 | ||
3114 | return skb->len; | |
3115 | } | |
3116 | ||
f131315f | 3117 | static int ip_vs_genl_new_daemon(struct net *net, struct nlattr **attrs) |
9a812198 JV |
3118 | { |
3119 | if (!(attrs[IPVS_DAEMON_ATTR_STATE] && | |
3120 | attrs[IPVS_DAEMON_ATTR_MCAST_IFN] && | |
3121 | attrs[IPVS_DAEMON_ATTR_SYNC_ID])) | |
3122 | return -EINVAL; | |
3123 | ||
f131315f HS |
3124 | return start_sync_thread(net, |
3125 | nla_get_u32(attrs[IPVS_DAEMON_ATTR_STATE]), | |
9a812198 JV |
3126 | nla_data(attrs[IPVS_DAEMON_ATTR_MCAST_IFN]), |
3127 | nla_get_u32(attrs[IPVS_DAEMON_ATTR_SYNC_ID])); | |
3128 | } | |
3129 | ||
f131315f | 3130 | static int ip_vs_genl_del_daemon(struct net *net, struct nlattr **attrs) |
9a812198 JV |
3131 | { |
3132 | if (!attrs[IPVS_DAEMON_ATTR_STATE]) | |
3133 | return -EINVAL; | |
3134 | ||
f131315f HS |
3135 | return stop_sync_thread(net, |
3136 | nla_get_u32(attrs[IPVS_DAEMON_ATTR_STATE])); | |
9a812198 JV |
3137 | } |
3138 | ||
9330419d | 3139 | static int ip_vs_genl_set_config(struct net *net, struct nlattr **attrs) |
9a812198 JV |
3140 | { |
3141 | struct ip_vs_timeout_user t; | |
3142 | ||
9330419d | 3143 | __ip_vs_get_timeouts(net, &t); |
9a812198 JV |
3144 | |
3145 | if (attrs[IPVS_CMD_ATTR_TIMEOUT_TCP]) | |
3146 | t.tcp_timeout = nla_get_u32(attrs[IPVS_CMD_ATTR_TIMEOUT_TCP]); | |
3147 | ||
3148 | if (attrs[IPVS_CMD_ATTR_TIMEOUT_TCP_FIN]) | |
3149 | t.tcp_fin_timeout = | |
3150 | nla_get_u32(attrs[IPVS_CMD_ATTR_TIMEOUT_TCP_FIN]); | |
3151 | ||
3152 | if (attrs[IPVS_CMD_ATTR_TIMEOUT_UDP]) | |
3153 | t.udp_timeout = nla_get_u32(attrs[IPVS_CMD_ATTR_TIMEOUT_UDP]); | |
3154 | ||
9330419d | 3155 | return ip_vs_set_timeout(net, &t); |
9a812198 JV |
3156 | } |
3157 | ||
3158 | static int ip_vs_genl_set_cmd(struct sk_buff *skb, struct genl_info *info) | |
3159 | { | |
3160 | struct ip_vs_service *svc = NULL; | |
c860c6b1 JV |
3161 | struct ip_vs_service_user_kern usvc; |
3162 | struct ip_vs_dest_user_kern udest; | |
9a812198 JV |
3163 | int ret = 0, cmd; |
3164 | int need_full_svc = 0, need_full_dest = 0; | |
fc723250 | 3165 | struct net *net; |
a0840e2e | 3166 | struct netns_ipvs *ipvs; |
9a812198 | 3167 | |
fc723250 | 3168 | net = skb_sknet(skb); |
a0840e2e | 3169 | ipvs = net_ipvs(net); |
9a812198 JV |
3170 | cmd = info->genlhdr->cmd; |
3171 | ||
3172 | mutex_lock(&__ip_vs_mutex); | |
3173 | ||
3174 | if (cmd == IPVS_CMD_FLUSH) { | |
fc723250 | 3175 | ret = ip_vs_flush(net); |
9a812198 JV |
3176 | goto out; |
3177 | } else if (cmd == IPVS_CMD_SET_CONFIG) { | |
9330419d | 3178 | ret = ip_vs_genl_set_config(net, info->attrs); |
9a812198 JV |
3179 | goto out; |
3180 | } else if (cmd == IPVS_CMD_NEW_DAEMON || | |
3181 | cmd == IPVS_CMD_DEL_DAEMON) { | |
3182 | ||
3183 | struct nlattr *daemon_attrs[IPVS_DAEMON_ATTR_MAX + 1]; | |
3184 | ||
3185 | if (!info->attrs[IPVS_CMD_ATTR_DAEMON] || | |
3186 | nla_parse_nested(daemon_attrs, IPVS_DAEMON_ATTR_MAX, | |
3187 | info->attrs[IPVS_CMD_ATTR_DAEMON], | |
3188 | ip_vs_daemon_policy)) { | |
3189 | ret = -EINVAL; | |
3190 | goto out; | |
3191 | } | |
3192 | ||
3193 | if (cmd == IPVS_CMD_NEW_DAEMON) | |
f131315f | 3194 | ret = ip_vs_genl_new_daemon(net, daemon_attrs); |
9a812198 | 3195 | else |
f131315f | 3196 | ret = ip_vs_genl_del_daemon(net, daemon_attrs); |
9a812198 JV |
3197 | goto out; |
3198 | } else if (cmd == IPVS_CMD_ZERO && | |
3199 | !info->attrs[IPVS_CMD_ATTR_SERVICE]) { | |
fc723250 | 3200 | ret = ip_vs_zero_all(net); |
9a812198 JV |
3201 | goto out; |
3202 | } | |
3203 | ||
3204 | /* All following commands require a service argument, so check if we | |
3205 | * received a valid one. We need a full service specification when | |
3206 | * adding / editing a service. Only identifying members otherwise. */ | |
3207 | if (cmd == IPVS_CMD_NEW_SERVICE || cmd == IPVS_CMD_SET_SERVICE) | |
3208 | need_full_svc = 1; | |
3209 | ||
fc723250 | 3210 | ret = ip_vs_genl_parse_service(net, &usvc, |
9a812198 | 3211 | info->attrs[IPVS_CMD_ATTR_SERVICE], |
26c15cfd | 3212 | need_full_svc, &svc); |
9a812198 JV |
3213 | if (ret) |
3214 | goto out; | |
3215 | ||
9a812198 JV |
3216 | /* Unless we're adding a new service, the service must already exist */ |
3217 | if ((cmd != IPVS_CMD_NEW_SERVICE) && (svc == NULL)) { | |
3218 | ret = -ESRCH; | |
3219 | goto out; | |
3220 | } | |
3221 | ||
3222 | /* Destination commands require a valid destination argument. For | |
3223 | * adding / editing a destination, we need a full destination | |
3224 | * specification. */ | |
3225 | if (cmd == IPVS_CMD_NEW_DEST || cmd == IPVS_CMD_SET_DEST || | |
3226 | cmd == IPVS_CMD_DEL_DEST) { | |
3227 | if (cmd != IPVS_CMD_DEL_DEST) | |
3228 | need_full_dest = 1; | |
3229 | ||
3230 | ret = ip_vs_genl_parse_dest(&udest, | |
3231 | info->attrs[IPVS_CMD_ATTR_DEST], | |
3232 | need_full_dest); | |
3233 | if (ret) | |
3234 | goto out; | |
3235 | } | |
3236 | ||
3237 | switch (cmd) { | |
3238 | case IPVS_CMD_NEW_SERVICE: | |
3239 | if (svc == NULL) | |
fc723250 | 3240 | ret = ip_vs_add_service(net, &usvc, &svc); |
9a812198 JV |
3241 | else |
3242 | ret = -EEXIST; | |
3243 | break; | |
3244 | case IPVS_CMD_SET_SERVICE: | |
3245 | ret = ip_vs_edit_service(svc, &usvc); | |
3246 | break; | |
3247 | case IPVS_CMD_DEL_SERVICE: | |
3248 | ret = ip_vs_del_service(svc); | |
26c15cfd | 3249 | /* do not use svc, it can be freed */ |
9a812198 JV |
3250 | break; |
3251 | case IPVS_CMD_NEW_DEST: | |
3252 | ret = ip_vs_add_dest(svc, &udest); | |
3253 | break; | |
3254 | case IPVS_CMD_SET_DEST: | |
3255 | ret = ip_vs_edit_dest(svc, &udest); | |
3256 | break; | |
3257 | case IPVS_CMD_DEL_DEST: | |
3258 | ret = ip_vs_del_dest(svc, &udest); | |
3259 | break; | |
3260 | case IPVS_CMD_ZERO: | |
3261 | ret = ip_vs_zero_service(svc); | |
3262 | break; | |
3263 | default: | |
3264 | ret = -EINVAL; | |
3265 | } | |
3266 | ||
3267 | out: | |
9a812198 JV |
3268 | mutex_unlock(&__ip_vs_mutex); |
3269 | ||
3270 | return ret; | |
3271 | } | |
3272 | ||
3273 | static int ip_vs_genl_get_cmd(struct sk_buff *skb, struct genl_info *info) | |
3274 | { | |
3275 | struct sk_buff *msg; | |
3276 | void *reply; | |
3277 | int ret, cmd, reply_cmd; | |
fc723250 | 3278 | struct net *net; |
a0840e2e | 3279 | struct netns_ipvs *ipvs; |
9a812198 | 3280 | |
fc723250 | 3281 | net = skb_sknet(skb); |
a0840e2e | 3282 | ipvs = net_ipvs(net); |
9a812198 JV |
3283 | cmd = info->genlhdr->cmd; |
3284 | ||
3285 | if (cmd == IPVS_CMD_GET_SERVICE) | |
3286 | reply_cmd = IPVS_CMD_NEW_SERVICE; | |
3287 | else if (cmd == IPVS_CMD_GET_INFO) | |
3288 | reply_cmd = IPVS_CMD_SET_INFO; | |
3289 | else if (cmd == IPVS_CMD_GET_CONFIG) | |
3290 | reply_cmd = IPVS_CMD_SET_CONFIG; | |
3291 | else { | |
1e3e238e | 3292 | pr_err("unknown Generic Netlink command\n"); |
9a812198 JV |
3293 | return -EINVAL; |
3294 | } | |
3295 | ||
3296 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
3297 | if (!msg) | |
3298 | return -ENOMEM; | |
3299 | ||
3300 | mutex_lock(&__ip_vs_mutex); | |
3301 | ||
3302 | reply = genlmsg_put_reply(msg, info, &ip_vs_genl_family, 0, reply_cmd); | |
3303 | if (reply == NULL) | |
3304 | goto nla_put_failure; | |
3305 | ||
3306 | switch (cmd) { | |
3307 | case IPVS_CMD_GET_SERVICE: | |
3308 | { | |
3309 | struct ip_vs_service *svc; | |
3310 | ||
fc723250 HS |
3311 | svc = ip_vs_genl_find_service(net, |
3312 | info->attrs[IPVS_CMD_ATTR_SERVICE]); | |
9a812198 JV |
3313 | if (IS_ERR(svc)) { |
3314 | ret = PTR_ERR(svc); | |
3315 | goto out_err; | |
3316 | } else if (svc) { | |
3317 | ret = ip_vs_genl_fill_service(msg, svc); | |
9a812198 JV |
3318 | if (ret) |
3319 | goto nla_put_failure; | |
3320 | } else { | |
3321 | ret = -ESRCH; | |
3322 | goto out_err; | |
3323 | } | |
3324 | ||
3325 | break; | |
3326 | } | |
3327 | ||
3328 | case IPVS_CMD_GET_CONFIG: | |
3329 | { | |
3330 | struct ip_vs_timeout_user t; | |
3331 | ||
9330419d | 3332 | __ip_vs_get_timeouts(net, &t); |
9a812198 JV |
3333 | #ifdef CONFIG_IP_VS_PROTO_TCP |
3334 | NLA_PUT_U32(msg, IPVS_CMD_ATTR_TIMEOUT_TCP, t.tcp_timeout); | |
3335 | NLA_PUT_U32(msg, IPVS_CMD_ATTR_TIMEOUT_TCP_FIN, | |
3336 | t.tcp_fin_timeout); | |
3337 | #endif | |
3338 | #ifdef CONFIG_IP_VS_PROTO_UDP | |
3339 | NLA_PUT_U32(msg, IPVS_CMD_ATTR_TIMEOUT_UDP, t.udp_timeout); | |
3340 | #endif | |
3341 | ||
3342 | break; | |
3343 | } | |
3344 | ||
3345 | case IPVS_CMD_GET_INFO: | |
3346 | NLA_PUT_U32(msg, IPVS_INFO_ATTR_VERSION, IP_VS_VERSION_CODE); | |
3347 | NLA_PUT_U32(msg, IPVS_INFO_ATTR_CONN_TAB_SIZE, | |
6f7edb48 | 3348 | ip_vs_conn_tab_size); |
9a812198 JV |
3349 | break; |
3350 | } | |
3351 | ||
3352 | genlmsg_end(msg, reply); | |
134e6375 | 3353 | ret = genlmsg_reply(msg, info); |
9a812198 JV |
3354 | goto out; |
3355 | ||
3356 | nla_put_failure: | |
1e3e238e | 3357 | pr_err("not enough space in Netlink message\n"); |
9a812198 JV |
3358 | ret = -EMSGSIZE; |
3359 | ||
3360 | out_err: | |
3361 | nlmsg_free(msg); | |
3362 | out: | |
3363 | mutex_unlock(&__ip_vs_mutex); | |
3364 | ||
3365 | return ret; | |
3366 | } | |
3367 | ||
3368 | ||
3369 | static struct genl_ops ip_vs_genl_ops[] __read_mostly = { | |
3370 | { | |
3371 | .cmd = IPVS_CMD_NEW_SERVICE, | |
3372 | .flags = GENL_ADMIN_PERM, | |
3373 | .policy = ip_vs_cmd_policy, | |
3374 | .doit = ip_vs_genl_set_cmd, | |
3375 | }, | |
3376 | { | |
3377 | .cmd = IPVS_CMD_SET_SERVICE, | |
3378 | .flags = GENL_ADMIN_PERM, | |
3379 | .policy = ip_vs_cmd_policy, | |
3380 | .doit = ip_vs_genl_set_cmd, | |
3381 | }, | |
3382 | { | |
3383 | .cmd = IPVS_CMD_DEL_SERVICE, | |
3384 | .flags = GENL_ADMIN_PERM, | |
3385 | .policy = ip_vs_cmd_policy, | |
3386 | .doit = ip_vs_genl_set_cmd, | |
3387 | }, | |
3388 | { | |
3389 | .cmd = IPVS_CMD_GET_SERVICE, | |
3390 | .flags = GENL_ADMIN_PERM, | |
3391 | .doit = ip_vs_genl_get_cmd, | |
3392 | .dumpit = ip_vs_genl_dump_services, | |
3393 | .policy = ip_vs_cmd_policy, | |
3394 | }, | |
3395 | { | |
3396 | .cmd = IPVS_CMD_NEW_DEST, | |
3397 | .flags = GENL_ADMIN_PERM, | |
3398 | .policy = ip_vs_cmd_policy, | |
3399 | .doit = ip_vs_genl_set_cmd, | |
3400 | }, | |
3401 | { | |
3402 | .cmd = IPVS_CMD_SET_DEST, | |
3403 | .flags = GENL_ADMIN_PERM, | |
3404 | .policy = ip_vs_cmd_policy, | |
3405 | .doit = ip_vs_genl_set_cmd, | |
3406 | }, | |
3407 | { | |
3408 | .cmd = IPVS_CMD_DEL_DEST, | |
3409 | .flags = GENL_ADMIN_PERM, | |
3410 | .policy = ip_vs_cmd_policy, | |
3411 | .doit = ip_vs_genl_set_cmd, | |
3412 | }, | |
3413 | { | |
3414 | .cmd = IPVS_CMD_GET_DEST, | |
3415 | .flags = GENL_ADMIN_PERM, | |
3416 | .policy = ip_vs_cmd_policy, | |
3417 | .dumpit = ip_vs_genl_dump_dests, | |
3418 | }, | |
3419 | { | |
3420 | .cmd = IPVS_CMD_NEW_DAEMON, | |
3421 | .flags = GENL_ADMIN_PERM, | |
3422 | .policy = ip_vs_cmd_policy, | |
3423 | .doit = ip_vs_genl_set_cmd, | |
3424 | }, | |
3425 | { | |
3426 | .cmd = IPVS_CMD_DEL_DAEMON, | |
3427 | .flags = GENL_ADMIN_PERM, | |
3428 | .policy = ip_vs_cmd_policy, | |
3429 | .doit = ip_vs_genl_set_cmd, | |
3430 | }, | |
3431 | { | |
3432 | .cmd = IPVS_CMD_GET_DAEMON, | |
3433 | .flags = GENL_ADMIN_PERM, | |
3434 | .dumpit = ip_vs_genl_dump_daemons, | |
3435 | }, | |
3436 | { | |
3437 | .cmd = IPVS_CMD_SET_CONFIG, | |
3438 | .flags = GENL_ADMIN_PERM, | |
3439 | .policy = ip_vs_cmd_policy, | |
3440 | .doit = ip_vs_genl_set_cmd, | |
3441 | }, | |
3442 | { | |
3443 | .cmd = IPVS_CMD_GET_CONFIG, | |
3444 | .flags = GENL_ADMIN_PERM, | |
3445 | .doit = ip_vs_genl_get_cmd, | |
3446 | }, | |
3447 | { | |
3448 | .cmd = IPVS_CMD_GET_INFO, | |
3449 | .flags = GENL_ADMIN_PERM, | |
3450 | .doit = ip_vs_genl_get_cmd, | |
3451 | }, | |
3452 | { | |
3453 | .cmd = IPVS_CMD_ZERO, | |
3454 | .flags = GENL_ADMIN_PERM, | |
3455 | .policy = ip_vs_cmd_policy, | |
3456 | .doit = ip_vs_genl_set_cmd, | |
3457 | }, | |
3458 | { | |
3459 | .cmd = IPVS_CMD_FLUSH, | |
3460 | .flags = GENL_ADMIN_PERM, | |
3461 | .doit = ip_vs_genl_set_cmd, | |
3462 | }, | |
3463 | }; | |
3464 | ||
3465 | static int __init ip_vs_genl_register(void) | |
3466 | { | |
8f698d54 MM |
3467 | return genl_register_family_with_ops(&ip_vs_genl_family, |
3468 | ip_vs_genl_ops, ARRAY_SIZE(ip_vs_genl_ops)); | |
9a812198 JV |
3469 | } |
3470 | ||
3471 | static void ip_vs_genl_unregister(void) | |
3472 | { | |
3473 | genl_unregister_family(&ip_vs_genl_family); | |
3474 | } | |
3475 | ||
3476 | /* End of Generic Netlink interface definitions */ | |
3477 | ||
61b1ab45 HS |
3478 | /* |
3479 | * per netns intit/exit func. | |
3480 | */ | |
3481 | int __net_init __ip_vs_control_init(struct net *net) | |
3482 | { | |
fc723250 HS |
3483 | int idx; |
3484 | struct netns_ipvs *ipvs = net_ipvs(net); | |
a0840e2e | 3485 | struct ctl_table *tbl; |
fc723250 | 3486 | |
a0840e2e HS |
3487 | atomic_set(&ipvs->dropentry, 0); |
3488 | spin_lock_init(&ipvs->dropentry_lock); | |
3489 | spin_lock_init(&ipvs->droppacket_lock); | |
3490 | spin_lock_init(&ipvs->securetcp_lock); | |
3491 | ipvs->rs_lock = __RW_LOCK_UNLOCKED(ipvs->rs_lock); | |
3492 | ||
3493 | /* Initialize rs_table */ | |
3494 | for (idx = 0; idx < IP_VS_RTAB_SIZE; idx++) | |
3495 | INIT_LIST_HEAD(&ipvs->rs_table[idx]); | |
3496 | ||
f2431e6e | 3497 | INIT_LIST_HEAD(&ipvs->dest_trash); |
763f8d0e HS |
3498 | atomic_set(&ipvs->ftpsvc_counter, 0); |
3499 | atomic_set(&ipvs->nullsvc_counter, 0); | |
f2431e6e | 3500 | |
b17fc996 HS |
3501 | /* procfs stats */ |
3502 | ipvs->tot_stats = kzalloc(sizeof(struct ip_vs_stats), GFP_KERNEL); | |
3503 | if (ipvs->tot_stats == NULL) { | |
3504 | pr_err("%s(): no memory.\n", __func__); | |
3505 | return -ENOMEM; | |
3506 | } | |
3507 | ipvs->cpustats = alloc_percpu(struct ip_vs_cpu_stats); | |
3508 | if (!ipvs->cpustats) { | |
3509 | pr_err("%s() alloc_percpu failed\n", __func__); | |
3510 | goto err_alloc; | |
3511 | } | |
3512 | spin_lock_init(&ipvs->tot_stats->lock); | |
61b1ab45 | 3513 | |
fc723250 HS |
3514 | for (idx = 0; idx < IP_VS_RTAB_SIZE; idx++) |
3515 | INIT_LIST_HEAD(&ipvs->rs_table[idx]); | |
3516 | ||
61b1ab45 HS |
3517 | proc_net_fops_create(net, "ip_vs", 0, &ip_vs_info_fops); |
3518 | proc_net_fops_create(net, "ip_vs_stats", 0, &ip_vs_stats_fops); | |
b17fc996 HS |
3519 | proc_net_fops_create(net, "ip_vs_stats_percpu", 0, |
3520 | &ip_vs_stats_percpu_fops); | |
a0840e2e HS |
3521 | |
3522 | if (!net_eq(net, &init_net)) { | |
3523 | tbl = kmemdup(vs_vars, sizeof(vs_vars), GFP_KERNEL); | |
3524 | if (tbl == NULL) | |
3525 | goto err_dup; | |
3526 | } else | |
3527 | tbl = vs_vars; | |
3528 | /* Initialize sysctl defaults */ | |
3529 | idx = 0; | |
3530 | ipvs->sysctl_amemthresh = 1024; | |
3531 | tbl[idx++].data = &ipvs->sysctl_amemthresh; | |
3532 | ipvs->sysctl_am_droprate = 10; | |
3533 | tbl[idx++].data = &ipvs->sysctl_am_droprate; | |
3534 | tbl[idx++].data = &ipvs->sysctl_drop_entry; | |
3535 | tbl[idx++].data = &ipvs->sysctl_drop_packet; | |
3536 | #ifdef CONFIG_IP_VS_NFCT | |
3537 | tbl[idx++].data = &ipvs->sysctl_conntrack; | |
3538 | #endif | |
3539 | tbl[idx++].data = &ipvs->sysctl_secure_tcp; | |
3540 | ipvs->sysctl_snat_reroute = 1; | |
3541 | tbl[idx++].data = &ipvs->sysctl_snat_reroute; | |
3542 | ipvs->sysctl_sync_ver = 1; | |
3543 | tbl[idx++].data = &ipvs->sysctl_sync_ver; | |
3544 | tbl[idx++].data = &ipvs->sysctl_cache_bypass; | |
3545 | tbl[idx++].data = &ipvs->sysctl_expire_nodest_conn; | |
3546 | tbl[idx++].data = &ipvs->sysctl_expire_quiescent_template; | |
3547 | ipvs->sysctl_sync_threshold[0] = 3; | |
3548 | ipvs->sysctl_sync_threshold[1] = 50; | |
3549 | tbl[idx].data = &ipvs->sysctl_sync_threshold; | |
3550 | tbl[idx++].maxlen = sizeof(ipvs->sysctl_sync_threshold); | |
3551 | tbl[idx++].data = &ipvs->sysctl_nat_icmp_send; | |
3552 | ||
3553 | ||
3554 | ipvs->sysctl_hdr = register_net_sysctl_table(net, net_vs_ctl_path, | |
61b1ab45 | 3555 | vs_vars); |
a0840e2e | 3556 | if (ipvs->sysctl_hdr == NULL) |
61b1ab45 | 3557 | goto err_reg; |
b17fc996 | 3558 | ip_vs_new_estimator(net, ipvs->tot_stats); |
a0840e2e | 3559 | ipvs->sysctl_tbl = tbl; |
f6340ee0 HS |
3560 | /* Schedule defense work */ |
3561 | INIT_DELAYED_WORK(&ipvs->defense_work, defense_work_handler); | |
3562 | schedule_delayed_work(&ipvs->defense_work, DEFENSE_TIMER_PERIOD); | |
61b1ab45 HS |
3563 | return 0; |
3564 | ||
3565 | err_reg: | |
a0840e2e HS |
3566 | if (!net_eq(net, &init_net)) |
3567 | kfree(tbl); | |
3568 | err_dup: | |
b17fc996 HS |
3569 | free_percpu(ipvs->cpustats); |
3570 | err_alloc: | |
3571 | kfree(ipvs->tot_stats); | |
61b1ab45 HS |
3572 | return -ENOMEM; |
3573 | } | |
3574 | ||
3575 | static void __net_exit __ip_vs_control_cleanup(struct net *net) | |
3576 | { | |
b17fc996 HS |
3577 | struct netns_ipvs *ipvs = net_ipvs(net); |
3578 | ||
f2431e6e | 3579 | ip_vs_trash_cleanup(net); |
b17fc996 | 3580 | ip_vs_kill_estimator(net, ipvs->tot_stats); |
f2431e6e HS |
3581 | cancel_delayed_work_sync(&ipvs->defense_work); |
3582 | cancel_work_sync(&ipvs->defense_work.work); | |
a0840e2e | 3583 | unregister_net_sysctl_table(ipvs->sysctl_hdr); |
b17fc996 | 3584 | proc_net_remove(net, "ip_vs_stats_percpu"); |
61b1ab45 HS |
3585 | proc_net_remove(net, "ip_vs_stats"); |
3586 | proc_net_remove(net, "ip_vs"); | |
b17fc996 HS |
3587 | free_percpu(ipvs->cpustats); |
3588 | kfree(ipvs->tot_stats); | |
61b1ab45 HS |
3589 | } |
3590 | ||
3591 | static struct pernet_operations ipvs_control_ops = { | |
3592 | .init = __ip_vs_control_init, | |
3593 | .exit = __ip_vs_control_cleanup, | |
3594 | }; | |
1da177e4 | 3595 | |
048cf48b | 3596 | int __init ip_vs_control_init(void) |
1da177e4 | 3597 | { |
1da177e4 | 3598 | int idx; |
fc723250 | 3599 | int ret; |
1da177e4 LT |
3600 | |
3601 | EnterFunction(2); | |
3602 | ||
fc723250 | 3603 | /* Initialize svc_table, ip_vs_svc_fwm_table, rs_table */ |
d86bef73 EB |
3604 | for(idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { |
3605 | INIT_LIST_HEAD(&ip_vs_svc_table[idx]); | |
3606 | INIT_LIST_HEAD(&ip_vs_svc_fwm_table[idx]); | |
3607 | } | |
fc723250 HS |
3608 | |
3609 | ret = register_pernet_subsys(&ipvs_control_ops); | |
3610 | if (ret) { | |
3611 | pr_err("cannot register namespace.\n"); | |
3612 | goto err; | |
d86bef73 | 3613 | } |
fc723250 HS |
3614 | |
3615 | smp_wmb(); /* Do we really need it now ? */ | |
d86bef73 | 3616 | |
1da177e4 LT |
3617 | ret = nf_register_sockopt(&ip_vs_sockopts); |
3618 | if (ret) { | |
1e3e238e | 3619 | pr_err("cannot register sockopt.\n"); |
fc723250 | 3620 | goto err_net; |
1da177e4 LT |
3621 | } |
3622 | ||
9a812198 JV |
3623 | ret = ip_vs_genl_register(); |
3624 | if (ret) { | |
1e3e238e | 3625 | pr_err("cannot register Generic Netlink interface.\n"); |
9a812198 | 3626 | nf_unregister_sockopt(&ip_vs_sockopts); |
fc723250 | 3627 | goto err_net; |
9a812198 JV |
3628 | } |
3629 | ||
1da177e4 LT |
3630 | LeaveFunction(2); |
3631 | return 0; | |
fc723250 HS |
3632 | |
3633 | err_net: | |
3634 | unregister_pernet_subsys(&ipvs_control_ops); | |
3635 | err: | |
3636 | return ret; | |
1da177e4 LT |
3637 | } |
3638 | ||
3639 | ||
3640 | void ip_vs_control_cleanup(void) | |
3641 | { | |
3642 | EnterFunction(2); | |
61b1ab45 | 3643 | unregister_pernet_subsys(&ipvs_control_ops); |
9a812198 | 3644 | ip_vs_genl_unregister(); |
1da177e4 LT |
3645 | nf_unregister_sockopt(&ip_vs_sockopts); |
3646 | LeaveFunction(2); | |
3647 | } |