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
8 * Authors: Wensong Zhang <wensong@linuxvirtualserver.org>
9 * Peter Kese <peter.kese@ijs.si>
10 * Julian Anastasov <ja@ssi.bg>
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.
21 #define KMSG_COMPONENT "IPVS"
22 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
24 #include <linux/module.h>
25 #include <linux/init.h>
26 #include <linux/types.h>
27 #include <linux/capability.h>
29 #include <linux/sysctl.h>
30 #include <linux/proc_fs.h>
31 #include <linux/workqueue.h>
32 #include <linux/swap.h>
33 #include <linux/seq_file.h>
34 #include <linux/slab.h>
36 #include <linux/netfilter.h>
37 #include <linux/netfilter_ipv4.h>
38 #include <linux/mutex.h>
40 #include <net/net_namespace.h>
41 #include <linux/nsproxy.h>
43 #ifdef CONFIG_IP_VS_IPV6
45 #include <net/ip6_route.h>
47 #include <net/route.h>
49 #include <net/genetlink.h>
51 #include <asm/uaccess.h>
53 #include <net/ip_vs.h>
55 /* semaphore for IPVS sockopts. And, [gs]etsockopt may sleep. */
56 static DEFINE_MUTEX(__ip_vs_mutex
);
58 /* sysctl variables */
60 #ifdef CONFIG_IP_VS_DEBUG
61 static int sysctl_ip_vs_debug_level
= 0;
63 int ip_vs_get_debug_level(void)
65 return sysctl_ip_vs_debug_level
;
71 static void __ip_vs_del_service(struct ip_vs_service
*svc
, bool cleanup
);
74 #ifdef CONFIG_IP_VS_IPV6
75 /* Taken from rt6_fill_node() in net/ipv6/route.c, is there a better way? */
76 static bool __ip_vs_addr_is_local_v6(struct net
*net
,
77 const struct in6_addr
*addr
)
82 struct dst_entry
*dst
= ip6_route_output(net
, NULL
, &fl6
);
85 is_local
= !dst
->error
&& dst
->dev
&& (dst
->dev
->flags
& IFF_LOOPBACK
);
94 * update_defense_level is called from keventd and from sysctl,
95 * so it needs to protect itself from softirqs
97 static void update_defense_level(struct netns_ipvs
*ipvs
)
100 static int old_secure_tcp
= 0;
105 /* we only count free and buffered memory (in pages) */
107 availmem
= i
.freeram
+ i
.bufferram
;
108 /* however in linux 2.5 the i.bufferram is total page cache size,
110 /* si_swapinfo(&i); */
111 /* availmem = availmem - (i.totalswap - i.freeswap); */
113 nomem
= (availmem
< ipvs
->sysctl_amemthresh
);
118 spin_lock(&ipvs
->dropentry_lock
);
119 switch (ipvs
->sysctl_drop_entry
) {
121 atomic_set(&ipvs
->dropentry
, 0);
125 atomic_set(&ipvs
->dropentry
, 1);
126 ipvs
->sysctl_drop_entry
= 2;
128 atomic_set(&ipvs
->dropentry
, 0);
133 atomic_set(&ipvs
->dropentry
, 1);
135 atomic_set(&ipvs
->dropentry
, 0);
136 ipvs
->sysctl_drop_entry
= 1;
140 atomic_set(&ipvs
->dropentry
, 1);
143 spin_unlock(&ipvs
->dropentry_lock
);
146 spin_lock(&ipvs
->droppacket_lock
);
147 switch (ipvs
->sysctl_drop_packet
) {
153 ipvs
->drop_rate
= ipvs
->drop_counter
154 = ipvs
->sysctl_amemthresh
/
155 (ipvs
->sysctl_amemthresh
-availmem
);
156 ipvs
->sysctl_drop_packet
= 2;
163 ipvs
->drop_rate
= ipvs
->drop_counter
164 = ipvs
->sysctl_amemthresh
/
165 (ipvs
->sysctl_amemthresh
-availmem
);
168 ipvs
->sysctl_drop_packet
= 1;
172 ipvs
->drop_rate
= ipvs
->sysctl_am_droprate
;
175 spin_unlock(&ipvs
->droppacket_lock
);
178 spin_lock(&ipvs
->securetcp_lock
);
179 switch (ipvs
->sysctl_secure_tcp
) {
181 if (old_secure_tcp
>= 2)
186 if (old_secure_tcp
< 2)
188 ipvs
->sysctl_secure_tcp
= 2;
190 if (old_secure_tcp
>= 2)
196 if (old_secure_tcp
< 2)
199 if (old_secure_tcp
>= 2)
201 ipvs
->sysctl_secure_tcp
= 1;
205 if (old_secure_tcp
< 2)
209 old_secure_tcp
= ipvs
->sysctl_secure_tcp
;
211 ip_vs_protocol_timeout_change(ipvs
,
212 ipvs
->sysctl_secure_tcp
> 1);
213 spin_unlock(&ipvs
->securetcp_lock
);
220 * Timer for checking the defense
222 #define DEFENSE_TIMER_PERIOD 1*HZ
224 static void defense_work_handler(struct work_struct
*work
)
226 struct netns_ipvs
*ipvs
=
227 container_of(work
, struct netns_ipvs
, defense_work
.work
);
229 update_defense_level(ipvs
);
230 if (atomic_read(&ipvs
->dropentry
))
231 ip_vs_random_dropentry(ipvs
);
232 schedule_delayed_work(&ipvs
->defense_work
, DEFENSE_TIMER_PERIOD
);
237 ip_vs_use_count_inc(void)
239 return try_module_get(THIS_MODULE
);
243 ip_vs_use_count_dec(void)
245 module_put(THIS_MODULE
);
250 * Hash table: for virtual service lookups
252 #define IP_VS_SVC_TAB_BITS 8
253 #define IP_VS_SVC_TAB_SIZE (1 << IP_VS_SVC_TAB_BITS)
254 #define IP_VS_SVC_TAB_MASK (IP_VS_SVC_TAB_SIZE - 1)
256 /* the service table hashed by <protocol, addr, port> */
257 static struct hlist_head ip_vs_svc_table
[IP_VS_SVC_TAB_SIZE
];
258 /* the service table hashed by fwmark */
259 static struct hlist_head ip_vs_svc_fwm_table
[IP_VS_SVC_TAB_SIZE
];
263 * Returns hash value for virtual service
265 static inline unsigned int
266 ip_vs_svc_hashkey(struct netns_ipvs
*ipvs
, int af
, unsigned int proto
,
267 const union nf_inet_addr
*addr
, __be16 port
)
269 register unsigned int porth
= ntohs(port
);
270 __be32 addr_fold
= addr
->ip
;
273 #ifdef CONFIG_IP_VS_IPV6
275 addr_fold
= addr
->ip6
[0]^addr
->ip6
[1]^
276 addr
->ip6
[2]^addr
->ip6
[3];
278 ahash
= ntohl(addr_fold
);
279 ahash
^= ((size_t) ipvs
>> 8);
281 return (proto
^ ahash
^ (porth
>> IP_VS_SVC_TAB_BITS
) ^ porth
) &
286 * Returns hash value of fwmark for virtual service lookup
288 static inline unsigned int ip_vs_svc_fwm_hashkey(struct netns_ipvs
*ipvs
, __u32 fwmark
)
290 return (((size_t)ipvs
>>8) ^ fwmark
) & IP_VS_SVC_TAB_MASK
;
294 * Hashes a service in the ip_vs_svc_table by <netns,proto,addr,port>
295 * or in the ip_vs_svc_fwm_table by fwmark.
296 * Should be called with locked tables.
298 static int ip_vs_svc_hash(struct ip_vs_service
*svc
)
302 if (svc
->flags
& IP_VS_SVC_F_HASHED
) {
303 pr_err("%s(): request for already hashed, called from %pF\n",
304 __func__
, __builtin_return_address(0));
308 if (svc
->fwmark
== 0) {
310 * Hash it by <netns,protocol,addr,port> in ip_vs_svc_table
312 hash
= ip_vs_svc_hashkey(svc
->ipvs
, svc
->af
, svc
->protocol
,
313 &svc
->addr
, svc
->port
);
314 hlist_add_head_rcu(&svc
->s_list
, &ip_vs_svc_table
[hash
]);
317 * Hash it by fwmark in svc_fwm_table
319 hash
= ip_vs_svc_fwm_hashkey(svc
->ipvs
, svc
->fwmark
);
320 hlist_add_head_rcu(&svc
->f_list
, &ip_vs_svc_fwm_table
[hash
]);
323 svc
->flags
|= IP_VS_SVC_F_HASHED
;
324 /* increase its refcnt because it is referenced by the svc table */
325 atomic_inc(&svc
->refcnt
);
331 * Unhashes a service from svc_table / svc_fwm_table.
332 * Should be called with locked tables.
334 static int ip_vs_svc_unhash(struct ip_vs_service
*svc
)
336 if (!(svc
->flags
& IP_VS_SVC_F_HASHED
)) {
337 pr_err("%s(): request for unhash flagged, called from %pF\n",
338 __func__
, __builtin_return_address(0));
342 if (svc
->fwmark
== 0) {
343 /* Remove it from the svc_table table */
344 hlist_del_rcu(&svc
->s_list
);
346 /* Remove it from the svc_fwm_table table */
347 hlist_del_rcu(&svc
->f_list
);
350 svc
->flags
&= ~IP_VS_SVC_F_HASHED
;
351 atomic_dec(&svc
->refcnt
);
357 * Get service by {netns, proto,addr,port} in the service table.
359 static inline struct ip_vs_service
*
360 __ip_vs_service_find(struct netns_ipvs
*ipvs
, int af
, __u16 protocol
,
361 const union nf_inet_addr
*vaddr
, __be16 vport
)
364 struct ip_vs_service
*svc
;
366 /* Check for "full" addressed entries */
367 hash
= ip_vs_svc_hashkey(ipvs
, af
, protocol
, vaddr
, vport
);
369 hlist_for_each_entry_rcu(svc
, &ip_vs_svc_table
[hash
], s_list
) {
371 && ip_vs_addr_equal(af
, &svc
->addr
, vaddr
)
372 && (svc
->port
== vport
)
373 && (svc
->protocol
== protocol
)
374 && (svc
->ipvs
== ipvs
)) {
385 * Get service by {fwmark} in the service table.
387 static inline struct ip_vs_service
*
388 __ip_vs_svc_fwm_find(struct netns_ipvs
*ipvs
, int af
, __u32 fwmark
)
391 struct ip_vs_service
*svc
;
393 /* Check for fwmark addressed entries */
394 hash
= ip_vs_svc_fwm_hashkey(ipvs
, fwmark
);
396 hlist_for_each_entry_rcu(svc
, &ip_vs_svc_fwm_table
[hash
], f_list
) {
397 if (svc
->fwmark
== fwmark
&& svc
->af
== af
398 && (svc
->ipvs
== ipvs
)) {
407 /* Find service, called under RCU lock */
408 struct ip_vs_service
*
409 ip_vs_service_find(struct netns_ipvs
*ipvs
, int af
, __u32 fwmark
, __u16 protocol
,
410 const union nf_inet_addr
*vaddr
, __be16 vport
)
412 struct ip_vs_service
*svc
;
415 * Check the table hashed by fwmark first
418 svc
= __ip_vs_svc_fwm_find(ipvs
, af
, fwmark
);
424 * Check the table hashed by <protocol,addr,port>
425 * for "full" addressed entries
427 svc
= __ip_vs_service_find(ipvs
, af
, protocol
, vaddr
, vport
);
430 && protocol
== IPPROTO_TCP
431 && atomic_read(&ipvs
->ftpsvc_counter
)
432 && (vport
== FTPDATA
|| ntohs(vport
) >= PROT_SOCK
)) {
434 * Check if ftp service entry exists, the packet
435 * might belong to FTP data connections.
437 svc
= __ip_vs_service_find(ipvs
, af
, protocol
, vaddr
, FTPPORT
);
441 && atomic_read(&ipvs
->nullsvc_counter
)) {
443 * Check if the catch-all port (port zero) exists
445 svc
= __ip_vs_service_find(ipvs
, af
, protocol
, vaddr
, 0);
449 IP_VS_DBG_BUF(9, "lookup service: fwm %u %s %s:%u %s\n",
450 fwmark
, ip_vs_proto_name(protocol
),
451 IP_VS_DBG_ADDR(af
, vaddr
), ntohs(vport
),
452 svc
? "hit" : "not hit");
459 __ip_vs_bind_svc(struct ip_vs_dest
*dest
, struct ip_vs_service
*svc
)
461 atomic_inc(&svc
->refcnt
);
462 rcu_assign_pointer(dest
->svc
, svc
);
465 static void ip_vs_service_free(struct ip_vs_service
*svc
)
467 free_percpu(svc
->stats
.cpustats
);
471 static void ip_vs_service_rcu_free(struct rcu_head
*head
)
473 struct ip_vs_service
*svc
;
475 svc
= container_of(head
, struct ip_vs_service
, rcu_head
);
476 ip_vs_service_free(svc
);
479 static void __ip_vs_svc_put(struct ip_vs_service
*svc
, bool do_delay
)
481 if (atomic_dec_and_test(&svc
->refcnt
)) {
482 IP_VS_DBG_BUF(3, "Removing service %u/%s:%u\n",
484 IP_VS_DBG_ADDR(svc
->af
, &svc
->addr
),
487 call_rcu(&svc
->rcu_head
, ip_vs_service_rcu_free
);
489 ip_vs_service_free(svc
);
495 * Returns hash value for real service
497 static inline unsigned int ip_vs_rs_hashkey(int af
,
498 const union nf_inet_addr
*addr
,
501 register unsigned int porth
= ntohs(port
);
502 __be32 addr_fold
= addr
->ip
;
504 #ifdef CONFIG_IP_VS_IPV6
506 addr_fold
= addr
->ip6
[0]^addr
->ip6
[1]^
507 addr
->ip6
[2]^addr
->ip6
[3];
510 return (ntohl(addr_fold
)^(porth
>>IP_VS_RTAB_BITS
)^porth
)
514 /* Hash ip_vs_dest in rs_table by <proto,addr,port>. */
515 static void ip_vs_rs_hash(struct netns_ipvs
*ipvs
, struct ip_vs_dest
*dest
)
519 if (dest
->in_rs_table
)
523 * Hash by proto,addr,port,
524 * which are the parameters of the real service.
526 hash
= ip_vs_rs_hashkey(dest
->af
, &dest
->addr
, dest
->port
);
528 hlist_add_head_rcu(&dest
->d_list
, &ipvs
->rs_table
[hash
]);
529 dest
->in_rs_table
= 1;
532 /* Unhash ip_vs_dest from rs_table. */
533 static void ip_vs_rs_unhash(struct ip_vs_dest
*dest
)
536 * Remove it from the rs_table table.
538 if (dest
->in_rs_table
) {
539 hlist_del_rcu(&dest
->d_list
);
540 dest
->in_rs_table
= 0;
544 /* Check if real service by <proto,addr,port> is present */
545 bool ip_vs_has_real_service(struct netns_ipvs
*ipvs
, int af
, __u16 protocol
,
546 const union nf_inet_addr
*daddr
, __be16 dport
)
549 struct ip_vs_dest
*dest
;
551 /* Check for "full" addressed entries */
552 hash
= ip_vs_rs_hashkey(af
, daddr
, dport
);
555 hlist_for_each_entry_rcu(dest
, &ipvs
->rs_table
[hash
], d_list
) {
556 if (dest
->port
== dport
&&
558 ip_vs_addr_equal(af
, &dest
->addr
, daddr
) &&
559 (dest
->protocol
== protocol
|| dest
->vfwmark
)) {
570 /* Find real service record by <proto,addr,port>.
571 * In case of multiple records with the same <proto,addr,port>, only
572 * the first found record is returned.
574 * To be called under RCU lock.
576 struct ip_vs_dest
*ip_vs_find_real_service(struct netns_ipvs
*ipvs
, int af
,
578 const union nf_inet_addr
*daddr
,
582 struct ip_vs_dest
*dest
;
584 /* Check for "full" addressed entries */
585 hash
= ip_vs_rs_hashkey(af
, daddr
, dport
);
587 hlist_for_each_entry_rcu(dest
, &ipvs
->rs_table
[hash
], d_list
) {
588 if (dest
->port
== dport
&&
590 ip_vs_addr_equal(af
, &dest
->addr
, daddr
) &&
591 (dest
->protocol
== protocol
|| dest
->vfwmark
)) {
600 /* Lookup destination by {addr,port} in the given service
601 * Called under RCU lock.
603 static struct ip_vs_dest
*
604 ip_vs_lookup_dest(struct ip_vs_service
*svc
, int dest_af
,
605 const union nf_inet_addr
*daddr
, __be16 dport
)
607 struct ip_vs_dest
*dest
;
610 * Find the destination for the given service
612 list_for_each_entry_rcu(dest
, &svc
->destinations
, n_list
) {
613 if ((dest
->af
== dest_af
) &&
614 ip_vs_addr_equal(dest_af
, &dest
->addr
, daddr
) &&
615 (dest
->port
== dport
)) {
625 * Find destination by {daddr,dport,vaddr,protocol}
626 * Created to be used in ip_vs_process_message() in
627 * the backup synchronization daemon. It finds the
628 * destination to be bound to the received connection
630 * Called under RCU lock, no refcnt is returned.
632 struct ip_vs_dest
*ip_vs_find_dest(struct netns_ipvs
*ipvs
, int svc_af
, int dest_af
,
633 const union nf_inet_addr
*daddr
,
635 const union nf_inet_addr
*vaddr
,
636 __be16 vport
, __u16 protocol
, __u32 fwmark
,
639 struct ip_vs_dest
*dest
;
640 struct ip_vs_service
*svc
;
643 svc
= ip_vs_service_find(ipvs
, svc_af
, fwmark
, protocol
, vaddr
, vport
);
646 if (fwmark
&& (flags
& IP_VS_CONN_F_FWD_MASK
) != IP_VS_CONN_F_MASQ
)
648 dest
= ip_vs_lookup_dest(svc
, dest_af
, daddr
, port
);
650 dest
= ip_vs_lookup_dest(svc
, dest_af
, daddr
, port
^ dport
);
654 void ip_vs_dest_dst_rcu_free(struct rcu_head
*head
)
656 struct ip_vs_dest_dst
*dest_dst
= container_of(head
,
657 struct ip_vs_dest_dst
,
660 dst_release(dest_dst
->dst_cache
);
664 /* Release dest_dst and dst_cache for dest in user context */
665 static void __ip_vs_dst_cache_reset(struct ip_vs_dest
*dest
)
667 struct ip_vs_dest_dst
*old
;
669 old
= rcu_dereference_protected(dest
->dest_dst
, 1);
671 RCU_INIT_POINTER(dest
->dest_dst
, NULL
);
672 call_rcu(&old
->rcu_head
, ip_vs_dest_dst_rcu_free
);
677 * Lookup dest by {svc,addr,port} in the destination trash.
678 * The destination trash is used to hold the destinations that are removed
679 * from the service table but are still referenced by some conn entries.
680 * The reason to add the destination trash is when the dest is temporary
681 * down (either by administrator or by monitor program), the dest can be
682 * picked back from the trash, the remaining connections to the dest can
683 * continue, and the counting information of the dest is also useful for
686 static struct ip_vs_dest
*
687 ip_vs_trash_get_dest(struct ip_vs_service
*svc
, int dest_af
,
688 const union nf_inet_addr
*daddr
, __be16 dport
)
690 struct ip_vs_dest
*dest
;
691 struct netns_ipvs
*ipvs
= svc
->ipvs
;
694 * Find the destination in trash
696 spin_lock_bh(&ipvs
->dest_trash_lock
);
697 list_for_each_entry(dest
, &ipvs
->dest_trash
, t_list
) {
698 IP_VS_DBG_BUF(3, "Destination %u/%s:%u still in trash, "
701 IP_VS_DBG_ADDR(dest
->af
, &dest
->addr
),
703 atomic_read(&dest
->refcnt
));
704 if (dest
->af
== dest_af
&&
705 ip_vs_addr_equal(dest_af
, &dest
->addr
, daddr
) &&
706 dest
->port
== dport
&&
707 dest
->vfwmark
== svc
->fwmark
&&
708 dest
->protocol
== svc
->protocol
&&
710 (ip_vs_addr_equal(svc
->af
, &dest
->vaddr
, &svc
->addr
) &&
711 dest
->vport
== svc
->port
))) {
713 list_del(&dest
->t_list
);
714 ip_vs_dest_hold(dest
);
722 spin_unlock_bh(&ipvs
->dest_trash_lock
);
727 static void ip_vs_dest_free(struct ip_vs_dest
*dest
)
729 struct ip_vs_service
*svc
= rcu_dereference_protected(dest
->svc
, 1);
731 __ip_vs_dst_cache_reset(dest
);
732 __ip_vs_svc_put(svc
, false);
733 free_percpu(dest
->stats
.cpustats
);
734 ip_vs_dest_put_and_free(dest
);
738 * Clean up all the destinations in the trash
739 * Called by the ip_vs_control_cleanup()
741 * When the ip_vs_control_clearup is activated by ipvs module exit,
742 * the service tables must have been flushed and all the connections
743 * are expired, and the refcnt of each destination in the trash must
744 * be 0, so we simply release them here.
746 static void ip_vs_trash_cleanup(struct netns_ipvs
*ipvs
)
748 struct ip_vs_dest
*dest
, *nxt
;
750 del_timer_sync(&ipvs
->dest_trash_timer
);
751 /* No need to use dest_trash_lock */
752 list_for_each_entry_safe(dest
, nxt
, &ipvs
->dest_trash
, t_list
) {
753 list_del(&dest
->t_list
);
754 ip_vs_dest_free(dest
);
759 ip_vs_copy_stats(struct ip_vs_kstats
*dst
, struct ip_vs_stats
*src
)
761 #define IP_VS_SHOW_STATS_COUNTER(c) dst->c = src->kstats.c - src->kstats0.c
763 spin_lock_bh(&src
->lock
);
765 IP_VS_SHOW_STATS_COUNTER(conns
);
766 IP_VS_SHOW_STATS_COUNTER(inpkts
);
767 IP_VS_SHOW_STATS_COUNTER(outpkts
);
768 IP_VS_SHOW_STATS_COUNTER(inbytes
);
769 IP_VS_SHOW_STATS_COUNTER(outbytes
);
771 ip_vs_read_estimator(dst
, src
);
773 spin_unlock_bh(&src
->lock
);
777 ip_vs_export_stats_user(struct ip_vs_stats_user
*dst
, struct ip_vs_kstats
*src
)
779 dst
->conns
= (u32
)src
->conns
;
780 dst
->inpkts
= (u32
)src
->inpkts
;
781 dst
->outpkts
= (u32
)src
->outpkts
;
782 dst
->inbytes
= src
->inbytes
;
783 dst
->outbytes
= src
->outbytes
;
784 dst
->cps
= (u32
)src
->cps
;
785 dst
->inpps
= (u32
)src
->inpps
;
786 dst
->outpps
= (u32
)src
->outpps
;
787 dst
->inbps
= (u32
)src
->inbps
;
788 dst
->outbps
= (u32
)src
->outbps
;
792 ip_vs_zero_stats(struct ip_vs_stats
*stats
)
794 spin_lock_bh(&stats
->lock
);
796 /* get current counters as zero point, rates are zeroed */
798 #define IP_VS_ZERO_STATS_COUNTER(c) stats->kstats0.c = stats->kstats.c
800 IP_VS_ZERO_STATS_COUNTER(conns
);
801 IP_VS_ZERO_STATS_COUNTER(inpkts
);
802 IP_VS_ZERO_STATS_COUNTER(outpkts
);
803 IP_VS_ZERO_STATS_COUNTER(inbytes
);
804 IP_VS_ZERO_STATS_COUNTER(outbytes
);
806 ip_vs_zero_estimator(stats
);
808 spin_unlock_bh(&stats
->lock
);
812 * Update a destination in the given service
815 __ip_vs_update_dest(struct ip_vs_service
*svc
, struct ip_vs_dest
*dest
,
816 struct ip_vs_dest_user_kern
*udest
, int add
)
818 struct netns_ipvs
*ipvs
= svc
->ipvs
;
819 struct ip_vs_service
*old_svc
;
820 struct ip_vs_scheduler
*sched
;
823 /* We cannot modify an address and change the address family */
824 BUG_ON(!add
&& udest
->af
!= dest
->af
);
826 if (add
&& udest
->af
!= svc
->af
)
827 ipvs
->mixed_address_family_dests
++;
829 /* set the weight and the flags */
830 atomic_set(&dest
->weight
, udest
->weight
);
831 conn_flags
= udest
->conn_flags
& IP_VS_CONN_F_DEST_MASK
;
832 conn_flags
|= IP_VS_CONN_F_INACTIVE
;
834 /* set the IP_VS_CONN_F_NOOUTPUT flag if not masquerading/NAT */
835 if ((conn_flags
& IP_VS_CONN_F_FWD_MASK
) != IP_VS_CONN_F_MASQ
) {
836 conn_flags
|= IP_VS_CONN_F_NOOUTPUT
;
839 * Put the real service in rs_table if not present.
840 * For now only for NAT!
842 ip_vs_rs_hash(ipvs
, dest
);
844 atomic_set(&dest
->conn_flags
, conn_flags
);
846 /* bind the service */
847 old_svc
= rcu_dereference_protected(dest
->svc
, 1);
849 __ip_vs_bind_svc(dest
, svc
);
851 if (old_svc
!= svc
) {
852 ip_vs_zero_stats(&dest
->stats
);
853 __ip_vs_bind_svc(dest
, svc
);
854 __ip_vs_svc_put(old_svc
, true);
858 /* set the dest status flags */
859 dest
->flags
|= IP_VS_DEST_F_AVAILABLE
;
861 if (udest
->u_threshold
== 0 || udest
->u_threshold
> dest
->u_threshold
)
862 dest
->flags
&= ~IP_VS_DEST_F_OVERLOAD
;
863 dest
->u_threshold
= udest
->u_threshold
;
864 dest
->l_threshold
= udest
->l_threshold
;
866 dest
->af
= udest
->af
;
868 spin_lock_bh(&dest
->dst_lock
);
869 __ip_vs_dst_cache_reset(dest
);
870 spin_unlock_bh(&dest
->dst_lock
);
873 ip_vs_start_estimator(svc
->ipvs
, &dest
->stats
);
874 list_add_rcu(&dest
->n_list
, &svc
->destinations
);
876 sched
= rcu_dereference_protected(svc
->scheduler
, 1);
877 if (sched
&& sched
->add_dest
)
878 sched
->add_dest(svc
, dest
);
880 sched
= rcu_dereference_protected(svc
->scheduler
, 1);
881 if (sched
&& sched
->upd_dest
)
882 sched
->upd_dest(svc
, dest
);
888 * Create a destination for the given service
891 ip_vs_new_dest(struct ip_vs_service
*svc
, struct ip_vs_dest_user_kern
*udest
,
892 struct ip_vs_dest
**dest_p
)
894 struct ip_vs_dest
*dest
;
895 unsigned int atype
, i
;
899 #ifdef CONFIG_IP_VS_IPV6
900 if (udest
->af
== AF_INET6
) {
901 atype
= ipv6_addr_type(&udest
->addr
.in6
);
902 if ((!(atype
& IPV6_ADDR_UNICAST
) ||
903 atype
& IPV6_ADDR_LINKLOCAL
) &&
904 !__ip_vs_addr_is_local_v6(svc
->ipvs
->net
, &udest
->addr
.in6
))
909 atype
= inet_addr_type(svc
->ipvs
->net
, udest
->addr
.ip
);
910 if (atype
!= RTN_LOCAL
&& atype
!= RTN_UNICAST
)
914 dest
= kzalloc(sizeof(struct ip_vs_dest
), GFP_KERNEL
);
918 dest
->stats
.cpustats
= alloc_percpu(struct ip_vs_cpu_stats
);
919 if (!dest
->stats
.cpustats
)
922 for_each_possible_cpu(i
) {
923 struct ip_vs_cpu_stats
*ip_vs_dest_stats
;
924 ip_vs_dest_stats
= per_cpu_ptr(dest
->stats
.cpustats
, i
);
925 u64_stats_init(&ip_vs_dest_stats
->syncp
);
928 dest
->af
= udest
->af
;
929 dest
->protocol
= svc
->protocol
;
930 dest
->vaddr
= svc
->addr
;
931 dest
->vport
= svc
->port
;
932 dest
->vfwmark
= svc
->fwmark
;
933 ip_vs_addr_copy(udest
->af
, &dest
->addr
, &udest
->addr
);
934 dest
->port
= udest
->port
;
936 atomic_set(&dest
->activeconns
, 0);
937 atomic_set(&dest
->inactconns
, 0);
938 atomic_set(&dest
->persistconns
, 0);
939 atomic_set(&dest
->refcnt
, 1);
941 INIT_HLIST_NODE(&dest
->d_list
);
942 spin_lock_init(&dest
->dst_lock
);
943 spin_lock_init(&dest
->stats
.lock
);
944 __ip_vs_update_dest(svc
, dest
, udest
, 1);
958 * Add a destination into an existing service
961 ip_vs_add_dest(struct ip_vs_service
*svc
, struct ip_vs_dest_user_kern
*udest
)
963 struct ip_vs_dest
*dest
;
964 union nf_inet_addr daddr
;
965 __be16 dport
= udest
->port
;
970 if (udest
->weight
< 0) {
971 pr_err("%s(): server weight less than zero\n", __func__
);
975 if (udest
->l_threshold
> udest
->u_threshold
) {
976 pr_err("%s(): lower threshold is higher than upper threshold\n",
981 ip_vs_addr_copy(udest
->af
, &daddr
, &udest
->addr
);
983 /* We use function that requires RCU lock */
985 dest
= ip_vs_lookup_dest(svc
, udest
->af
, &daddr
, dport
);
989 IP_VS_DBG(1, "%s(): dest already exists\n", __func__
);
994 * Check if the dest already exists in the trash and
995 * is from the same service
997 dest
= ip_vs_trash_get_dest(svc
, udest
->af
, &daddr
, dport
);
1000 IP_VS_DBG_BUF(3, "Get destination %s:%u from trash, "
1001 "dest->refcnt=%d, service %u/%s:%u\n",
1002 IP_VS_DBG_ADDR(udest
->af
, &daddr
), ntohs(dport
),
1003 atomic_read(&dest
->refcnt
),
1005 IP_VS_DBG_ADDR(svc
->af
, &dest
->vaddr
),
1006 ntohs(dest
->vport
));
1008 __ip_vs_update_dest(svc
, dest
, udest
, 1);
1012 * Allocate and initialize the dest structure
1014 ret
= ip_vs_new_dest(svc
, udest
, &dest
);
1023 * Edit a destination in the given service
1026 ip_vs_edit_dest(struct ip_vs_service
*svc
, struct ip_vs_dest_user_kern
*udest
)
1028 struct ip_vs_dest
*dest
;
1029 union nf_inet_addr daddr
;
1030 __be16 dport
= udest
->port
;
1034 if (udest
->weight
< 0) {
1035 pr_err("%s(): server weight less than zero\n", __func__
);
1039 if (udest
->l_threshold
> udest
->u_threshold
) {
1040 pr_err("%s(): lower threshold is higher than upper threshold\n",
1045 ip_vs_addr_copy(udest
->af
, &daddr
, &udest
->addr
);
1047 /* We use function that requires RCU lock */
1049 dest
= ip_vs_lookup_dest(svc
, udest
->af
, &daddr
, dport
);
1053 IP_VS_DBG(1, "%s(): dest doesn't exist\n", __func__
);
1057 __ip_vs_update_dest(svc
, dest
, udest
, 0);
1064 * Delete a destination (must be already unlinked from the service)
1066 static void __ip_vs_del_dest(struct netns_ipvs
*ipvs
, struct ip_vs_dest
*dest
,
1069 ip_vs_stop_estimator(ipvs
, &dest
->stats
);
1072 * Remove it from the d-linked list with the real services.
1074 ip_vs_rs_unhash(dest
);
1076 spin_lock_bh(&ipvs
->dest_trash_lock
);
1077 IP_VS_DBG_BUF(3, "Moving dest %s:%u into trash, dest->refcnt=%d\n",
1078 IP_VS_DBG_ADDR(dest
->af
, &dest
->addr
), ntohs(dest
->port
),
1079 atomic_read(&dest
->refcnt
));
1080 if (list_empty(&ipvs
->dest_trash
) && !cleanup
)
1081 mod_timer(&ipvs
->dest_trash_timer
,
1082 jiffies
+ (IP_VS_DEST_TRASH_PERIOD
>> 1));
1083 /* dest lives in trash without reference */
1084 list_add(&dest
->t_list
, &ipvs
->dest_trash
);
1085 dest
->idle_start
= 0;
1086 spin_unlock_bh(&ipvs
->dest_trash_lock
);
1087 ip_vs_dest_put(dest
);
1092 * Unlink a destination from the given service
1094 static void __ip_vs_unlink_dest(struct ip_vs_service
*svc
,
1095 struct ip_vs_dest
*dest
,
1098 dest
->flags
&= ~IP_VS_DEST_F_AVAILABLE
;
1101 * Remove it from the d-linked destination list.
1103 list_del_rcu(&dest
->n_list
);
1106 if (dest
->af
!= svc
->af
)
1107 svc
->ipvs
->mixed_address_family_dests
--;
1110 struct ip_vs_scheduler
*sched
;
1112 sched
= rcu_dereference_protected(svc
->scheduler
, 1);
1113 if (sched
&& sched
->del_dest
)
1114 sched
->del_dest(svc
, dest
);
1120 * Delete a destination server in the given service
1123 ip_vs_del_dest(struct ip_vs_service
*svc
, struct ip_vs_dest_user_kern
*udest
)
1125 struct ip_vs_dest
*dest
;
1126 __be16 dport
= udest
->port
;
1130 /* We use function that requires RCU lock */
1132 dest
= ip_vs_lookup_dest(svc
, udest
->af
, &udest
->addr
, dport
);
1136 IP_VS_DBG(1, "%s(): destination not found!\n", __func__
);
1141 * Unlink dest from the service
1143 __ip_vs_unlink_dest(svc
, dest
, 1);
1146 * Delete the destination
1148 __ip_vs_del_dest(svc
->ipvs
, dest
, false);
1155 static void ip_vs_dest_trash_expire(unsigned long data
)
1157 struct netns_ipvs
*ipvs
= (struct netns_ipvs
*)data
;
1158 struct ip_vs_dest
*dest
, *next
;
1159 unsigned long now
= jiffies
;
1161 spin_lock(&ipvs
->dest_trash_lock
);
1162 list_for_each_entry_safe(dest
, next
, &ipvs
->dest_trash
, t_list
) {
1163 if (atomic_read(&dest
->refcnt
) > 0)
1165 if (dest
->idle_start
) {
1166 if (time_before(now
, dest
->idle_start
+
1167 IP_VS_DEST_TRASH_PERIOD
))
1170 dest
->idle_start
= max(1UL, now
);
1173 IP_VS_DBG_BUF(3, "Removing destination %u/%s:%u from trash\n",
1175 IP_VS_DBG_ADDR(dest
->af
, &dest
->addr
),
1177 list_del(&dest
->t_list
);
1178 ip_vs_dest_free(dest
);
1180 if (!list_empty(&ipvs
->dest_trash
))
1181 mod_timer(&ipvs
->dest_trash_timer
,
1182 jiffies
+ (IP_VS_DEST_TRASH_PERIOD
>> 1));
1183 spin_unlock(&ipvs
->dest_trash_lock
);
1187 * Add a service into the service hash table
1190 ip_vs_add_service(struct netns_ipvs
*ipvs
, struct ip_vs_service_user_kern
*u
,
1191 struct ip_vs_service
**svc_p
)
1194 struct ip_vs_scheduler
*sched
= NULL
;
1195 struct ip_vs_pe
*pe
= NULL
;
1196 struct ip_vs_service
*svc
= NULL
;
1198 /* increase the module use count */
1199 ip_vs_use_count_inc();
1201 /* Lookup the scheduler by 'u->sched_name' */
1202 if (strcmp(u
->sched_name
, "none")) {
1203 sched
= ip_vs_scheduler_get(u
->sched_name
);
1205 pr_info("Scheduler module ip_vs_%s not found\n",
1212 if (u
->pe_name
&& *u
->pe_name
) {
1213 pe
= ip_vs_pe_getbyname(u
->pe_name
);
1215 pr_info("persistence engine module ip_vs_pe_%s "
1216 "not found\n", u
->pe_name
);
1222 #ifdef CONFIG_IP_VS_IPV6
1223 if (u
->af
== AF_INET6
) {
1224 __u32 plen
= (__force __u32
) u
->netmask
;
1226 if (plen
< 1 || plen
> 128) {
1233 svc
= kzalloc(sizeof(struct ip_vs_service
), GFP_KERNEL
);
1235 IP_VS_DBG(1, "%s(): no memory\n", __func__
);
1239 svc
->stats
.cpustats
= alloc_percpu(struct ip_vs_cpu_stats
);
1240 if (!svc
->stats
.cpustats
) {
1245 for_each_possible_cpu(i
) {
1246 struct ip_vs_cpu_stats
*ip_vs_stats
;
1247 ip_vs_stats
= per_cpu_ptr(svc
->stats
.cpustats
, i
);
1248 u64_stats_init(&ip_vs_stats
->syncp
);
1252 /* I'm the first user of the service */
1253 atomic_set(&svc
->refcnt
, 0);
1256 svc
->protocol
= u
->protocol
;
1257 ip_vs_addr_copy(svc
->af
, &svc
->addr
, &u
->addr
);
1258 svc
->port
= u
->port
;
1259 svc
->fwmark
= u
->fwmark
;
1260 svc
->flags
= u
->flags
;
1261 svc
->timeout
= u
->timeout
* HZ
;
1262 svc
->netmask
= u
->netmask
;
1265 INIT_LIST_HEAD(&svc
->destinations
);
1266 spin_lock_init(&svc
->sched_lock
);
1267 spin_lock_init(&svc
->stats
.lock
);
1269 /* Bind the scheduler */
1271 ret
= ip_vs_bind_scheduler(svc
, sched
);
1277 /* Bind the ct retriever */
1278 RCU_INIT_POINTER(svc
->pe
, pe
);
1281 /* Update the virtual service counters */
1282 if (svc
->port
== FTPPORT
)
1283 atomic_inc(&ipvs
->ftpsvc_counter
);
1284 else if (svc
->port
== 0)
1285 atomic_inc(&ipvs
->nullsvc_counter
);
1286 if (svc
->pe
&& svc
->pe
->conn_out
)
1287 atomic_inc(&ipvs
->conn_out_counter
);
1289 ip_vs_start_estimator(ipvs
, &svc
->stats
);
1291 /* Count only IPv4 services for old get/setsockopt interface */
1292 if (svc
->af
== AF_INET
)
1293 ipvs
->num_services
++;
1295 /* Hash the service into the service table */
1296 ip_vs_svc_hash(svc
);
1299 /* Now there is a service - full throttle */
1306 ip_vs_unbind_scheduler(svc
, sched
);
1307 ip_vs_service_free(svc
);
1309 ip_vs_scheduler_put(sched
);
1312 /* decrease the module use count */
1313 ip_vs_use_count_dec();
1320 * Edit a service and bind it with a new scheduler
1323 ip_vs_edit_service(struct ip_vs_service
*svc
, struct ip_vs_service_user_kern
*u
)
1325 struct ip_vs_scheduler
*sched
= NULL
, *old_sched
;
1326 struct ip_vs_pe
*pe
= NULL
, *old_pe
= NULL
;
1328 bool new_pe_conn_out
, old_pe_conn_out
;
1331 * Lookup the scheduler, by 'u->sched_name'
1333 if (strcmp(u
->sched_name
, "none")) {
1334 sched
= ip_vs_scheduler_get(u
->sched_name
);
1336 pr_info("Scheduler module ip_vs_%s not found\n",
1343 if (u
->pe_name
&& *u
->pe_name
) {
1344 pe
= ip_vs_pe_getbyname(u
->pe_name
);
1346 pr_info("persistence engine module ip_vs_pe_%s "
1347 "not found\n", u
->pe_name
);
1354 #ifdef CONFIG_IP_VS_IPV6
1355 if (u
->af
== AF_INET6
) {
1356 __u32 plen
= (__force __u32
) u
->netmask
;
1358 if (plen
< 1 || plen
> 128) {
1365 old_sched
= rcu_dereference_protected(svc
->scheduler
, 1);
1366 if (sched
!= old_sched
) {
1368 ip_vs_unbind_scheduler(svc
, old_sched
);
1369 RCU_INIT_POINTER(svc
->scheduler
, NULL
);
1370 /* Wait all svc->sched_data users */
1373 /* Bind the new scheduler */
1375 ret
= ip_vs_bind_scheduler(svc
, sched
);
1377 ip_vs_scheduler_put(sched
);
1384 * Set the flags and timeout value
1386 svc
->flags
= u
->flags
| IP_VS_SVC_F_HASHED
;
1387 svc
->timeout
= u
->timeout
* HZ
;
1388 svc
->netmask
= u
->netmask
;
1390 old_pe
= rcu_dereference_protected(svc
->pe
, 1);
1392 rcu_assign_pointer(svc
->pe
, pe
);
1393 /* check for optional methods in new pe */
1394 new_pe_conn_out
= (pe
&& pe
->conn_out
) ? true : false;
1395 old_pe_conn_out
= (old_pe
&& old_pe
->conn_out
) ? true : false;
1396 if (new_pe_conn_out
&& !old_pe_conn_out
)
1397 atomic_inc(&svc
->ipvs
->conn_out_counter
);
1398 if (old_pe_conn_out
&& !new_pe_conn_out
)
1399 atomic_dec(&svc
->ipvs
->conn_out_counter
);
1403 ip_vs_scheduler_put(old_sched
);
1404 ip_vs_pe_put(old_pe
);
1409 * Delete a service from the service list
1410 * - The service must be unlinked, unlocked and not referenced!
1411 * - We are called under _bh lock
1413 static void __ip_vs_del_service(struct ip_vs_service
*svc
, bool cleanup
)
1415 struct ip_vs_dest
*dest
, *nxt
;
1416 struct ip_vs_scheduler
*old_sched
;
1417 struct ip_vs_pe
*old_pe
;
1418 struct netns_ipvs
*ipvs
= svc
->ipvs
;
1420 /* Count only IPv4 services for old get/setsockopt interface */
1421 if (svc
->af
== AF_INET
)
1422 ipvs
->num_services
--;
1424 ip_vs_stop_estimator(svc
->ipvs
, &svc
->stats
);
1426 /* Unbind scheduler */
1427 old_sched
= rcu_dereference_protected(svc
->scheduler
, 1);
1428 ip_vs_unbind_scheduler(svc
, old_sched
);
1429 ip_vs_scheduler_put(old_sched
);
1431 /* Unbind persistence engine, keep svc->pe */
1432 old_pe
= rcu_dereference_protected(svc
->pe
, 1);
1433 if (old_pe
&& old_pe
->conn_out
)
1434 atomic_dec(&ipvs
->conn_out_counter
);
1435 ip_vs_pe_put(old_pe
);
1438 * Unlink the whole destination list
1440 list_for_each_entry_safe(dest
, nxt
, &svc
->destinations
, n_list
) {
1441 __ip_vs_unlink_dest(svc
, dest
, 0);
1442 __ip_vs_del_dest(svc
->ipvs
, dest
, cleanup
);
1446 * Update the virtual service counters
1448 if (svc
->port
== FTPPORT
)
1449 atomic_dec(&ipvs
->ftpsvc_counter
);
1450 else if (svc
->port
== 0)
1451 atomic_dec(&ipvs
->nullsvc_counter
);
1454 * Free the service if nobody refers to it
1456 __ip_vs_svc_put(svc
, true);
1458 /* decrease the module use count */
1459 ip_vs_use_count_dec();
1463 * Unlink a service from list and try to delete it if its refcnt reached 0
1465 static void ip_vs_unlink_service(struct ip_vs_service
*svc
, bool cleanup
)
1467 /* Hold svc to avoid double release from dest_trash */
1468 atomic_inc(&svc
->refcnt
);
1470 * Unhash it from the service table
1472 ip_vs_svc_unhash(svc
);
1474 __ip_vs_del_service(svc
, cleanup
);
1478 * Delete a service from the service list
1480 static int ip_vs_del_service(struct ip_vs_service
*svc
)
1484 ip_vs_unlink_service(svc
, false);
1491 * Flush all the virtual services
1493 static int ip_vs_flush(struct netns_ipvs
*ipvs
, bool cleanup
)
1496 struct ip_vs_service
*svc
;
1497 struct hlist_node
*n
;
1500 * Flush the service table hashed by <netns,protocol,addr,port>
1502 for(idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1503 hlist_for_each_entry_safe(svc
, n
, &ip_vs_svc_table
[idx
],
1505 if (svc
->ipvs
== ipvs
)
1506 ip_vs_unlink_service(svc
, cleanup
);
1511 * Flush the service table hashed by fwmark
1513 for(idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1514 hlist_for_each_entry_safe(svc
, n
, &ip_vs_svc_fwm_table
[idx
],
1516 if (svc
->ipvs
== ipvs
)
1517 ip_vs_unlink_service(svc
, cleanup
);
1525 * Delete service by {netns} in the service table.
1526 * Called by __ip_vs_cleanup()
1528 void ip_vs_service_net_cleanup(struct netns_ipvs
*ipvs
)
1531 /* Check for "full" addressed entries */
1532 mutex_lock(&__ip_vs_mutex
);
1533 ip_vs_flush(ipvs
, true);
1534 mutex_unlock(&__ip_vs_mutex
);
1538 /* Put all references for device (dst_cache) */
1540 ip_vs_forget_dev(struct ip_vs_dest
*dest
, struct net_device
*dev
)
1542 struct ip_vs_dest_dst
*dest_dst
;
1544 spin_lock_bh(&dest
->dst_lock
);
1545 dest_dst
= rcu_dereference_protected(dest
->dest_dst
, 1);
1546 if (dest_dst
&& dest_dst
->dst_cache
->dev
== dev
) {
1547 IP_VS_DBG_BUF(3, "Reset dev:%s dest %s:%u ,dest->refcnt=%d\n",
1549 IP_VS_DBG_ADDR(dest
->af
, &dest
->addr
),
1551 atomic_read(&dest
->refcnt
));
1552 __ip_vs_dst_cache_reset(dest
);
1554 spin_unlock_bh(&dest
->dst_lock
);
1557 /* Netdev event receiver
1558 * Currently only NETDEV_DOWN is handled to release refs to cached dsts
1560 static int ip_vs_dst_event(struct notifier_block
*this, unsigned long event
,
1563 struct net_device
*dev
= netdev_notifier_info_to_dev(ptr
);
1564 struct net
*net
= dev_net(dev
);
1565 struct netns_ipvs
*ipvs
= net_ipvs(net
);
1566 struct ip_vs_service
*svc
;
1567 struct ip_vs_dest
*dest
;
1570 if (event
!= NETDEV_DOWN
|| !ipvs
)
1572 IP_VS_DBG(3, "%s() dev=%s\n", __func__
, dev
->name
);
1574 mutex_lock(&__ip_vs_mutex
);
1575 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1576 hlist_for_each_entry(svc
, &ip_vs_svc_table
[idx
], s_list
) {
1577 if (svc
->ipvs
== ipvs
) {
1578 list_for_each_entry(dest
, &svc
->destinations
,
1580 ip_vs_forget_dev(dest
, dev
);
1585 hlist_for_each_entry(svc
, &ip_vs_svc_fwm_table
[idx
], f_list
) {
1586 if (svc
->ipvs
== ipvs
) {
1587 list_for_each_entry(dest
, &svc
->destinations
,
1589 ip_vs_forget_dev(dest
, dev
);
1596 spin_lock_bh(&ipvs
->dest_trash_lock
);
1597 list_for_each_entry(dest
, &ipvs
->dest_trash
, t_list
) {
1598 ip_vs_forget_dev(dest
, dev
);
1600 spin_unlock_bh(&ipvs
->dest_trash_lock
);
1601 mutex_unlock(&__ip_vs_mutex
);
1607 * Zero counters in a service or all services
1609 static int ip_vs_zero_service(struct ip_vs_service
*svc
)
1611 struct ip_vs_dest
*dest
;
1613 list_for_each_entry(dest
, &svc
->destinations
, n_list
) {
1614 ip_vs_zero_stats(&dest
->stats
);
1616 ip_vs_zero_stats(&svc
->stats
);
1620 static int ip_vs_zero_all(struct netns_ipvs
*ipvs
)
1623 struct ip_vs_service
*svc
;
1625 for(idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1626 hlist_for_each_entry(svc
, &ip_vs_svc_table
[idx
], s_list
) {
1627 if (svc
->ipvs
== ipvs
)
1628 ip_vs_zero_service(svc
);
1632 for(idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1633 hlist_for_each_entry(svc
, &ip_vs_svc_fwm_table
[idx
], f_list
) {
1634 if (svc
->ipvs
== ipvs
)
1635 ip_vs_zero_service(svc
);
1639 ip_vs_zero_stats(&ipvs
->tot_stats
);
1643 #ifdef CONFIG_SYSCTL
1646 static int three
= 3;
1649 proc_do_defense_mode(struct ctl_table
*table
, int write
,
1650 void __user
*buffer
, size_t *lenp
, loff_t
*ppos
)
1652 struct netns_ipvs
*ipvs
= table
->extra2
;
1653 int *valp
= table
->data
;
1657 rc
= proc_dointvec(table
, write
, buffer
, lenp
, ppos
);
1658 if (write
&& (*valp
!= val
)) {
1659 if ((*valp
< 0) || (*valp
> 3)) {
1660 /* Restore the correct value */
1663 update_defense_level(ipvs
);
1670 proc_do_sync_threshold(struct ctl_table
*table
, int write
,
1671 void __user
*buffer
, size_t *lenp
, loff_t
*ppos
)
1673 int *valp
= table
->data
;
1677 /* backup the value first */
1678 memcpy(val
, valp
, sizeof(val
));
1680 rc
= proc_dointvec(table
, write
, buffer
, lenp
, ppos
);
1681 if (write
&& (valp
[0] < 0 || valp
[1] < 0 ||
1682 (valp
[0] >= valp
[1] && valp
[1]))) {
1683 /* Restore the correct value */
1684 memcpy(valp
, val
, sizeof(val
));
1690 proc_do_sync_mode(struct ctl_table
*table
, int write
,
1691 void __user
*buffer
, size_t *lenp
, loff_t
*ppos
)
1693 int *valp
= table
->data
;
1697 rc
= proc_dointvec(table
, write
, buffer
, lenp
, ppos
);
1698 if (write
&& (*valp
!= val
)) {
1699 if ((*valp
< 0) || (*valp
> 1)) {
1700 /* Restore the correct value */
1708 proc_do_sync_ports(struct ctl_table
*table
, int write
,
1709 void __user
*buffer
, size_t *lenp
, loff_t
*ppos
)
1711 int *valp
= table
->data
;
1715 rc
= proc_dointvec(table
, write
, buffer
, lenp
, ppos
);
1716 if (write
&& (*valp
!= val
)) {
1717 if (*valp
< 1 || !is_power_of_2(*valp
)) {
1718 /* Restore the correct value */
1726 * IPVS sysctl table (under the /proc/sys/net/ipv4/vs/)
1727 * Do not change order or insert new entries without
1728 * align with netns init in ip_vs_control_net_init()
1731 static struct ctl_table vs_vars
[] = {
1733 .procname
= "amemthresh",
1734 .maxlen
= sizeof(int),
1736 .proc_handler
= proc_dointvec
,
1739 .procname
= "am_droprate",
1740 .maxlen
= sizeof(int),
1742 .proc_handler
= proc_dointvec
,
1745 .procname
= "drop_entry",
1746 .maxlen
= sizeof(int),
1748 .proc_handler
= proc_do_defense_mode
,
1751 .procname
= "drop_packet",
1752 .maxlen
= sizeof(int),
1754 .proc_handler
= proc_do_defense_mode
,
1756 #ifdef CONFIG_IP_VS_NFCT
1758 .procname
= "conntrack",
1759 .maxlen
= sizeof(int),
1761 .proc_handler
= &proc_dointvec
,
1765 .procname
= "secure_tcp",
1766 .maxlen
= sizeof(int),
1768 .proc_handler
= proc_do_defense_mode
,
1771 .procname
= "snat_reroute",
1772 .maxlen
= sizeof(int),
1774 .proc_handler
= &proc_dointvec
,
1777 .procname
= "sync_version",
1778 .maxlen
= sizeof(int),
1780 .proc_handler
= &proc_do_sync_mode
,
1783 .procname
= "sync_ports",
1784 .maxlen
= sizeof(int),
1786 .proc_handler
= &proc_do_sync_ports
,
1789 .procname
= "sync_persist_mode",
1790 .maxlen
= sizeof(int),
1792 .proc_handler
= proc_dointvec
,
1795 .procname
= "sync_qlen_max",
1796 .maxlen
= sizeof(unsigned long),
1798 .proc_handler
= proc_doulongvec_minmax
,
1801 .procname
= "sync_sock_size",
1802 .maxlen
= sizeof(int),
1804 .proc_handler
= proc_dointvec
,
1807 .procname
= "cache_bypass",
1808 .maxlen
= sizeof(int),
1810 .proc_handler
= proc_dointvec
,
1813 .procname
= "expire_nodest_conn",
1814 .maxlen
= sizeof(int),
1816 .proc_handler
= proc_dointvec
,
1819 .procname
= "sloppy_tcp",
1820 .maxlen
= sizeof(int),
1822 .proc_handler
= proc_dointvec
,
1825 .procname
= "sloppy_sctp",
1826 .maxlen
= sizeof(int),
1828 .proc_handler
= proc_dointvec
,
1831 .procname
= "expire_quiescent_template",
1832 .maxlen
= sizeof(int),
1834 .proc_handler
= proc_dointvec
,
1837 .procname
= "sync_threshold",
1839 sizeof(((struct netns_ipvs
*)0)->sysctl_sync_threshold
),
1841 .proc_handler
= proc_do_sync_threshold
,
1844 .procname
= "sync_refresh_period",
1845 .maxlen
= sizeof(int),
1847 .proc_handler
= proc_dointvec_jiffies
,
1850 .procname
= "sync_retries",
1851 .maxlen
= sizeof(int),
1853 .proc_handler
= proc_dointvec_minmax
,
1858 .procname
= "nat_icmp_send",
1859 .maxlen
= sizeof(int),
1861 .proc_handler
= proc_dointvec
,
1864 .procname
= "pmtu_disc",
1865 .maxlen
= sizeof(int),
1867 .proc_handler
= proc_dointvec
,
1870 .procname
= "backup_only",
1871 .maxlen
= sizeof(int),
1873 .proc_handler
= proc_dointvec
,
1876 .procname
= "conn_reuse_mode",
1877 .maxlen
= sizeof(int),
1879 .proc_handler
= proc_dointvec
,
1882 .procname
= "schedule_icmp",
1883 .maxlen
= sizeof(int),
1885 .proc_handler
= proc_dointvec
,
1888 .procname
= "ignore_tunneled",
1889 .maxlen
= sizeof(int),
1891 .proc_handler
= proc_dointvec
,
1893 #ifdef CONFIG_IP_VS_DEBUG
1895 .procname
= "debug_level",
1896 .data
= &sysctl_ip_vs_debug_level
,
1897 .maxlen
= sizeof(int),
1899 .proc_handler
= proc_dointvec
,
1907 #ifdef CONFIG_PROC_FS
1910 struct seq_net_private p
; /* Do not move this, netns depends upon it*/
1911 struct hlist_head
*table
;
1916 * Write the contents of the VS rule table to a PROCfs file.
1917 * (It is kept just for backward compatibility)
1919 static inline const char *ip_vs_fwd_name(unsigned int flags
)
1921 switch (flags
& IP_VS_CONN_F_FWD_MASK
) {
1922 case IP_VS_CONN_F_LOCALNODE
:
1924 case IP_VS_CONN_F_TUNNEL
:
1926 case IP_VS_CONN_F_DROUTE
:
1934 /* Get the Nth entry in the two lists */
1935 static struct ip_vs_service
*ip_vs_info_array(struct seq_file
*seq
, loff_t pos
)
1937 struct net
*net
= seq_file_net(seq
);
1938 struct netns_ipvs
*ipvs
= net_ipvs(net
);
1939 struct ip_vs_iter
*iter
= seq
->private;
1941 struct ip_vs_service
*svc
;
1943 /* look in hash by protocol */
1944 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1945 hlist_for_each_entry_rcu(svc
, &ip_vs_svc_table
[idx
], s_list
) {
1946 if ((svc
->ipvs
== ipvs
) && pos
-- == 0) {
1947 iter
->table
= ip_vs_svc_table
;
1954 /* keep looking in fwmark */
1955 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1956 hlist_for_each_entry_rcu(svc
, &ip_vs_svc_fwm_table
[idx
],
1958 if ((svc
->ipvs
== ipvs
) && pos
-- == 0) {
1959 iter
->table
= ip_vs_svc_fwm_table
;
1969 static void *ip_vs_info_seq_start(struct seq_file
*seq
, loff_t
*pos
)
1973 return *pos
? ip_vs_info_array(seq
, *pos
- 1) : SEQ_START_TOKEN
;
1977 static void *ip_vs_info_seq_next(struct seq_file
*seq
, void *v
, loff_t
*pos
)
1979 struct hlist_node
*e
;
1980 struct ip_vs_iter
*iter
;
1981 struct ip_vs_service
*svc
;
1984 if (v
== SEQ_START_TOKEN
)
1985 return ip_vs_info_array(seq
,0);
1988 iter
= seq
->private;
1990 if (iter
->table
== ip_vs_svc_table
) {
1991 /* next service in table hashed by protocol */
1992 e
= rcu_dereference(hlist_next_rcu(&svc
->s_list
));
1994 return hlist_entry(e
, struct ip_vs_service
, s_list
);
1996 while (++iter
->bucket
< IP_VS_SVC_TAB_SIZE
) {
1997 hlist_for_each_entry_rcu(svc
,
1998 &ip_vs_svc_table
[iter
->bucket
],
2004 iter
->table
= ip_vs_svc_fwm_table
;
2009 /* next service in hashed by fwmark */
2010 e
= rcu_dereference(hlist_next_rcu(&svc
->f_list
));
2012 return hlist_entry(e
, struct ip_vs_service
, f_list
);
2015 while (++iter
->bucket
< IP_VS_SVC_TAB_SIZE
) {
2016 hlist_for_each_entry_rcu(svc
,
2017 &ip_vs_svc_fwm_table
[iter
->bucket
],
2025 static void ip_vs_info_seq_stop(struct seq_file
*seq
, void *v
)
2032 static int ip_vs_info_seq_show(struct seq_file
*seq
, void *v
)
2034 if (v
== SEQ_START_TOKEN
) {
2036 "IP Virtual Server version %d.%d.%d (size=%d)\n",
2037 NVERSION(IP_VS_VERSION_CODE
), ip_vs_conn_tab_size
);
2039 "Prot LocalAddress:Port Scheduler Flags\n");
2041 " -> RemoteAddress:Port Forward Weight ActiveConn InActConn\n");
2043 const struct ip_vs_service
*svc
= v
;
2044 const struct ip_vs_iter
*iter
= seq
->private;
2045 const struct ip_vs_dest
*dest
;
2046 struct ip_vs_scheduler
*sched
= rcu_dereference(svc
->scheduler
);
2047 char *sched_name
= sched
? sched
->name
: "none";
2049 if (iter
->table
== ip_vs_svc_table
) {
2050 #ifdef CONFIG_IP_VS_IPV6
2051 if (svc
->af
== AF_INET6
)
2052 seq_printf(seq
, "%s [%pI6]:%04X %s ",
2053 ip_vs_proto_name(svc
->protocol
),
2059 seq_printf(seq
, "%s %08X:%04X %s %s ",
2060 ip_vs_proto_name(svc
->protocol
),
2061 ntohl(svc
->addr
.ip
),
2064 (svc
->flags
& IP_VS_SVC_F_ONEPACKET
)?"ops ":"");
2066 seq_printf(seq
, "FWM %08X %s %s",
2067 svc
->fwmark
, sched_name
,
2068 (svc
->flags
& IP_VS_SVC_F_ONEPACKET
)?"ops ":"");
2071 if (svc
->flags
& IP_VS_SVC_F_PERSISTENT
)
2072 seq_printf(seq
, "persistent %d %08X\n",
2074 ntohl(svc
->netmask
));
2076 seq_putc(seq
, '\n');
2078 list_for_each_entry_rcu(dest
, &svc
->destinations
, n_list
) {
2079 #ifdef CONFIG_IP_VS_IPV6
2080 if (dest
->af
== AF_INET6
)
2083 " %-7s %-6d %-10d %-10d\n",
2086 ip_vs_fwd_name(atomic_read(&dest
->conn_flags
)),
2087 atomic_read(&dest
->weight
),
2088 atomic_read(&dest
->activeconns
),
2089 atomic_read(&dest
->inactconns
));
2094 "%-7s %-6d %-10d %-10d\n",
2095 ntohl(dest
->addr
.ip
),
2097 ip_vs_fwd_name(atomic_read(&dest
->conn_flags
)),
2098 atomic_read(&dest
->weight
),
2099 atomic_read(&dest
->activeconns
),
2100 atomic_read(&dest
->inactconns
));
2107 static const struct seq_operations ip_vs_info_seq_ops
= {
2108 .start
= ip_vs_info_seq_start
,
2109 .next
= ip_vs_info_seq_next
,
2110 .stop
= ip_vs_info_seq_stop
,
2111 .show
= ip_vs_info_seq_show
,
2114 static int ip_vs_info_open(struct inode
*inode
, struct file
*file
)
2116 return seq_open_net(inode
, file
, &ip_vs_info_seq_ops
,
2117 sizeof(struct ip_vs_iter
));
2120 static const struct file_operations ip_vs_info_fops
= {
2121 .owner
= THIS_MODULE
,
2122 .open
= ip_vs_info_open
,
2124 .llseek
= seq_lseek
,
2125 .release
= seq_release_net
,
2128 static int ip_vs_stats_show(struct seq_file
*seq
, void *v
)
2130 struct net
*net
= seq_file_single_net(seq
);
2131 struct ip_vs_kstats show
;
2133 /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */
2135 " Total Incoming Outgoing Incoming Outgoing\n");
2137 " Conns Packets Packets Bytes Bytes\n");
2139 ip_vs_copy_stats(&show
, &net_ipvs(net
)->tot_stats
);
2140 seq_printf(seq
, "%8LX %8LX %8LX %16LX %16LX\n\n",
2141 (unsigned long long)show
.conns
,
2142 (unsigned long long)show
.inpkts
,
2143 (unsigned long long)show
.outpkts
,
2144 (unsigned long long)show
.inbytes
,
2145 (unsigned long long)show
.outbytes
);
2147 /* 01234567 01234567 01234567 0123456701234567 0123456701234567*/
2149 " Conns/s Pkts/s Pkts/s Bytes/s Bytes/s\n");
2150 seq_printf(seq
, "%8LX %8LX %8LX %16LX %16LX\n",
2151 (unsigned long long)show
.cps
,
2152 (unsigned long long)show
.inpps
,
2153 (unsigned long long)show
.outpps
,
2154 (unsigned long long)show
.inbps
,
2155 (unsigned long long)show
.outbps
);
2160 static int ip_vs_stats_seq_open(struct inode
*inode
, struct file
*file
)
2162 return single_open_net(inode
, file
, ip_vs_stats_show
);
2165 static const struct file_operations ip_vs_stats_fops
= {
2166 .owner
= THIS_MODULE
,
2167 .open
= ip_vs_stats_seq_open
,
2169 .llseek
= seq_lseek
,
2170 .release
= single_release_net
,
2173 static int ip_vs_stats_percpu_show(struct seq_file
*seq
, void *v
)
2175 struct net
*net
= seq_file_single_net(seq
);
2176 struct ip_vs_stats
*tot_stats
= &net_ipvs(net
)->tot_stats
;
2177 struct ip_vs_cpu_stats __percpu
*cpustats
= tot_stats
->cpustats
;
2178 struct ip_vs_kstats kstats
;
2181 /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */
2183 " Total Incoming Outgoing Incoming Outgoing\n");
2185 "CPU Conns Packets Packets Bytes Bytes\n");
2187 for_each_possible_cpu(i
) {
2188 struct ip_vs_cpu_stats
*u
= per_cpu_ptr(cpustats
, i
);
2190 u64 conns
, inpkts
, outpkts
, inbytes
, outbytes
;
2193 start
= u64_stats_fetch_begin_irq(&u
->syncp
);
2194 conns
= u
->cnt
.conns
;
2195 inpkts
= u
->cnt
.inpkts
;
2196 outpkts
= u
->cnt
.outpkts
;
2197 inbytes
= u
->cnt
.inbytes
;
2198 outbytes
= u
->cnt
.outbytes
;
2199 } while (u64_stats_fetch_retry_irq(&u
->syncp
, start
));
2201 seq_printf(seq
, "%3X %8LX %8LX %8LX %16LX %16LX\n",
2202 i
, (u64
)conns
, (u64
)inpkts
,
2203 (u64
)outpkts
, (u64
)inbytes
,
2207 ip_vs_copy_stats(&kstats
, tot_stats
);
2209 seq_printf(seq
, " ~ %8LX %8LX %8LX %16LX %16LX\n\n",
2210 (unsigned long long)kstats
.conns
,
2211 (unsigned long long)kstats
.inpkts
,
2212 (unsigned long long)kstats
.outpkts
,
2213 (unsigned long long)kstats
.inbytes
,
2214 (unsigned long long)kstats
.outbytes
);
2216 /* ... 01234567 01234567 01234567 0123456701234567 0123456701234567 */
2218 " Conns/s Pkts/s Pkts/s Bytes/s Bytes/s\n");
2219 seq_printf(seq
, " %8LX %8LX %8LX %16LX %16LX\n",
2229 static int ip_vs_stats_percpu_seq_open(struct inode
*inode
, struct file
*file
)
2231 return single_open_net(inode
, file
, ip_vs_stats_percpu_show
);
2234 static const struct file_operations ip_vs_stats_percpu_fops
= {
2235 .owner
= THIS_MODULE
,
2236 .open
= ip_vs_stats_percpu_seq_open
,
2238 .llseek
= seq_lseek
,
2239 .release
= single_release_net
,
2244 * Set timeout values for tcp tcpfin udp in the timeout_table.
2246 static int ip_vs_set_timeout(struct netns_ipvs
*ipvs
, struct ip_vs_timeout_user
*u
)
2248 #if defined(CONFIG_IP_VS_PROTO_TCP) || defined(CONFIG_IP_VS_PROTO_UDP)
2249 struct ip_vs_proto_data
*pd
;
2252 IP_VS_DBG(2, "Setting timeout tcp:%d tcpfin:%d udp:%d\n",
2257 #ifdef CONFIG_IP_VS_PROTO_TCP
2258 if (u
->tcp_timeout
) {
2259 pd
= ip_vs_proto_data_get(ipvs
, IPPROTO_TCP
);
2260 pd
->timeout_table
[IP_VS_TCP_S_ESTABLISHED
]
2261 = u
->tcp_timeout
* HZ
;
2264 if (u
->tcp_fin_timeout
) {
2265 pd
= ip_vs_proto_data_get(ipvs
, IPPROTO_TCP
);
2266 pd
->timeout_table
[IP_VS_TCP_S_FIN_WAIT
]
2267 = u
->tcp_fin_timeout
* HZ
;
2271 #ifdef CONFIG_IP_VS_PROTO_UDP
2272 if (u
->udp_timeout
) {
2273 pd
= ip_vs_proto_data_get(ipvs
, IPPROTO_UDP
);
2274 pd
->timeout_table
[IP_VS_UDP_S_NORMAL
]
2275 = u
->udp_timeout
* HZ
;
2281 #define CMDID(cmd) (cmd - IP_VS_BASE_CTL)
2283 struct ip_vs_svcdest_user
{
2284 struct ip_vs_service_user s
;
2285 struct ip_vs_dest_user d
;
2288 static const unsigned char set_arglen
[CMDID(IP_VS_SO_SET_MAX
) + 1] = {
2289 [CMDID(IP_VS_SO_SET_ADD
)] = sizeof(struct ip_vs_service_user
),
2290 [CMDID(IP_VS_SO_SET_EDIT
)] = sizeof(struct ip_vs_service_user
),
2291 [CMDID(IP_VS_SO_SET_DEL
)] = sizeof(struct ip_vs_service_user
),
2292 [CMDID(IP_VS_SO_SET_ADDDEST
)] = sizeof(struct ip_vs_svcdest_user
),
2293 [CMDID(IP_VS_SO_SET_DELDEST
)] = sizeof(struct ip_vs_svcdest_user
),
2294 [CMDID(IP_VS_SO_SET_EDITDEST
)] = sizeof(struct ip_vs_svcdest_user
),
2295 [CMDID(IP_VS_SO_SET_TIMEOUT
)] = sizeof(struct ip_vs_timeout_user
),
2296 [CMDID(IP_VS_SO_SET_STARTDAEMON
)] = sizeof(struct ip_vs_daemon_user
),
2297 [CMDID(IP_VS_SO_SET_STOPDAEMON
)] = sizeof(struct ip_vs_daemon_user
),
2298 [CMDID(IP_VS_SO_SET_ZERO
)] = sizeof(struct ip_vs_service_user
),
2301 union ip_vs_set_arglen
{
2302 struct ip_vs_service_user field_IP_VS_SO_SET_ADD
;
2303 struct ip_vs_service_user field_IP_VS_SO_SET_EDIT
;
2304 struct ip_vs_service_user field_IP_VS_SO_SET_DEL
;
2305 struct ip_vs_svcdest_user field_IP_VS_SO_SET_ADDDEST
;
2306 struct ip_vs_svcdest_user field_IP_VS_SO_SET_DELDEST
;
2307 struct ip_vs_svcdest_user field_IP_VS_SO_SET_EDITDEST
;
2308 struct ip_vs_timeout_user field_IP_VS_SO_SET_TIMEOUT
;
2309 struct ip_vs_daemon_user field_IP_VS_SO_SET_STARTDAEMON
;
2310 struct ip_vs_daemon_user field_IP_VS_SO_SET_STOPDAEMON
;
2311 struct ip_vs_service_user field_IP_VS_SO_SET_ZERO
;
2314 #define MAX_SET_ARGLEN sizeof(union ip_vs_set_arglen)
2316 static void ip_vs_copy_usvc_compat(struct ip_vs_service_user_kern
*usvc
,
2317 struct ip_vs_service_user
*usvc_compat
)
2319 memset(usvc
, 0, sizeof(*usvc
));
2322 usvc
->protocol
= usvc_compat
->protocol
;
2323 usvc
->addr
.ip
= usvc_compat
->addr
;
2324 usvc
->port
= usvc_compat
->port
;
2325 usvc
->fwmark
= usvc_compat
->fwmark
;
2327 /* Deep copy of sched_name is not needed here */
2328 usvc
->sched_name
= usvc_compat
->sched_name
;
2330 usvc
->flags
= usvc_compat
->flags
;
2331 usvc
->timeout
= usvc_compat
->timeout
;
2332 usvc
->netmask
= usvc_compat
->netmask
;
2335 static void ip_vs_copy_udest_compat(struct ip_vs_dest_user_kern
*udest
,
2336 struct ip_vs_dest_user
*udest_compat
)
2338 memset(udest
, 0, sizeof(*udest
));
2340 udest
->addr
.ip
= udest_compat
->addr
;
2341 udest
->port
= udest_compat
->port
;
2342 udest
->conn_flags
= udest_compat
->conn_flags
;
2343 udest
->weight
= udest_compat
->weight
;
2344 udest
->u_threshold
= udest_compat
->u_threshold
;
2345 udest
->l_threshold
= udest_compat
->l_threshold
;
2346 udest
->af
= AF_INET
;
2350 do_ip_vs_set_ctl(struct sock
*sk
, int cmd
, void __user
*user
, unsigned int len
)
2352 struct net
*net
= sock_net(sk
);
2354 unsigned char arg
[MAX_SET_ARGLEN
];
2355 struct ip_vs_service_user
*usvc_compat
;
2356 struct ip_vs_service_user_kern usvc
;
2357 struct ip_vs_service
*svc
;
2358 struct ip_vs_dest_user
*udest_compat
;
2359 struct ip_vs_dest_user_kern udest
;
2360 struct netns_ipvs
*ipvs
= net_ipvs(net
);
2362 BUILD_BUG_ON(sizeof(arg
) > 255);
2363 if (!ns_capable(sock_net(sk
)->user_ns
, CAP_NET_ADMIN
))
2366 if (cmd
< IP_VS_BASE_CTL
|| cmd
> IP_VS_SO_SET_MAX
)
2368 if (len
!= set_arglen
[CMDID(cmd
)]) {
2369 IP_VS_DBG(1, "set_ctl: len %u != %u\n",
2370 len
, set_arglen
[CMDID(cmd
)]);
2374 if (copy_from_user(arg
, user
, len
) != 0)
2377 /* increase the module use count */
2378 ip_vs_use_count_inc();
2380 /* Handle daemons since they have another lock */
2381 if (cmd
== IP_VS_SO_SET_STARTDAEMON
||
2382 cmd
== IP_VS_SO_SET_STOPDAEMON
) {
2383 struct ip_vs_daemon_user
*dm
= (struct ip_vs_daemon_user
*)arg
;
2385 if (cmd
== IP_VS_SO_SET_STARTDAEMON
) {
2386 struct ipvs_sync_daemon_cfg cfg
;
2388 memset(&cfg
, 0, sizeof(cfg
));
2389 strlcpy(cfg
.mcast_ifn
, dm
->mcast_ifn
,
2390 sizeof(cfg
.mcast_ifn
));
2391 cfg
.syncid
= dm
->syncid
;
2393 mutex_lock(&ipvs
->sync_mutex
);
2394 ret
= start_sync_thread(ipvs
, &cfg
, dm
->state
);
2395 mutex_unlock(&ipvs
->sync_mutex
);
2398 mutex_lock(&ipvs
->sync_mutex
);
2399 ret
= stop_sync_thread(ipvs
, dm
->state
);
2400 mutex_unlock(&ipvs
->sync_mutex
);
2405 mutex_lock(&__ip_vs_mutex
);
2406 if (cmd
== IP_VS_SO_SET_FLUSH
) {
2407 /* Flush the virtual service */
2408 ret
= ip_vs_flush(ipvs
, false);
2410 } else if (cmd
== IP_VS_SO_SET_TIMEOUT
) {
2411 /* Set timeout values for (tcp tcpfin udp) */
2412 ret
= ip_vs_set_timeout(ipvs
, (struct ip_vs_timeout_user
*)arg
);
2416 usvc_compat
= (struct ip_vs_service_user
*)arg
;
2417 udest_compat
= (struct ip_vs_dest_user
*)(usvc_compat
+ 1);
2419 /* We only use the new structs internally, so copy userspace compat
2420 * structs to extended internal versions */
2421 ip_vs_copy_usvc_compat(&usvc
, usvc_compat
);
2422 ip_vs_copy_udest_compat(&udest
, udest_compat
);
2424 if (cmd
== IP_VS_SO_SET_ZERO
) {
2425 /* if no service address is set, zero counters in all */
2426 if (!usvc
.fwmark
&& !usvc
.addr
.ip
&& !usvc
.port
) {
2427 ret
= ip_vs_zero_all(ipvs
);
2432 /* Check for valid protocol: TCP or UDP or SCTP, even for fwmark!=0 */
2433 if (usvc
.protocol
!= IPPROTO_TCP
&& usvc
.protocol
!= IPPROTO_UDP
&&
2434 usvc
.protocol
!= IPPROTO_SCTP
) {
2435 pr_err("set_ctl: invalid protocol: %d %pI4:%d %s\n",
2436 usvc
.protocol
, &usvc
.addr
.ip
,
2437 ntohs(usvc
.port
), usvc
.sched_name
);
2442 /* Lookup the exact service by <protocol, addr, port> or fwmark */
2444 if (usvc
.fwmark
== 0)
2445 svc
= __ip_vs_service_find(ipvs
, usvc
.af
, usvc
.protocol
,
2446 &usvc
.addr
, usvc
.port
);
2448 svc
= __ip_vs_svc_fwm_find(ipvs
, usvc
.af
, usvc
.fwmark
);
2451 if (cmd
!= IP_VS_SO_SET_ADD
2452 && (svc
== NULL
|| svc
->protocol
!= usvc
.protocol
)) {
2458 case IP_VS_SO_SET_ADD
:
2462 ret
= ip_vs_add_service(ipvs
, &usvc
, &svc
);
2464 case IP_VS_SO_SET_EDIT
:
2465 ret
= ip_vs_edit_service(svc
, &usvc
);
2467 case IP_VS_SO_SET_DEL
:
2468 ret
= ip_vs_del_service(svc
);
2472 case IP_VS_SO_SET_ZERO
:
2473 ret
= ip_vs_zero_service(svc
);
2475 case IP_VS_SO_SET_ADDDEST
:
2476 ret
= ip_vs_add_dest(svc
, &udest
);
2478 case IP_VS_SO_SET_EDITDEST
:
2479 ret
= ip_vs_edit_dest(svc
, &udest
);
2481 case IP_VS_SO_SET_DELDEST
:
2482 ret
= ip_vs_del_dest(svc
, &udest
);
2489 mutex_unlock(&__ip_vs_mutex
);
2491 /* decrease the module use count */
2492 ip_vs_use_count_dec();
2499 ip_vs_copy_service(struct ip_vs_service_entry
*dst
, struct ip_vs_service
*src
)
2501 struct ip_vs_scheduler
*sched
;
2502 struct ip_vs_kstats kstats
;
2505 sched
= rcu_dereference_protected(src
->scheduler
, 1);
2506 sched_name
= sched
? sched
->name
: "none";
2507 dst
->protocol
= src
->protocol
;
2508 dst
->addr
= src
->addr
.ip
;
2509 dst
->port
= src
->port
;
2510 dst
->fwmark
= src
->fwmark
;
2511 strlcpy(dst
->sched_name
, sched_name
, sizeof(dst
->sched_name
));
2512 dst
->flags
= src
->flags
;
2513 dst
->timeout
= src
->timeout
/ HZ
;
2514 dst
->netmask
= src
->netmask
;
2515 dst
->num_dests
= src
->num_dests
;
2516 ip_vs_copy_stats(&kstats
, &src
->stats
);
2517 ip_vs_export_stats_user(&dst
->stats
, &kstats
);
2521 __ip_vs_get_service_entries(struct netns_ipvs
*ipvs
,
2522 const struct ip_vs_get_services
*get
,
2523 struct ip_vs_get_services __user
*uptr
)
2526 struct ip_vs_service
*svc
;
2527 struct ip_vs_service_entry entry
;
2530 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
2531 hlist_for_each_entry(svc
, &ip_vs_svc_table
[idx
], s_list
) {
2532 /* Only expose IPv4 entries to old interface */
2533 if (svc
->af
!= AF_INET
|| (svc
->ipvs
!= ipvs
))
2536 if (count
>= get
->num_services
)
2538 memset(&entry
, 0, sizeof(entry
));
2539 ip_vs_copy_service(&entry
, svc
);
2540 if (copy_to_user(&uptr
->entrytable
[count
],
2541 &entry
, sizeof(entry
))) {
2549 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
2550 hlist_for_each_entry(svc
, &ip_vs_svc_fwm_table
[idx
], f_list
) {
2551 /* Only expose IPv4 entries to old interface */
2552 if (svc
->af
!= AF_INET
|| (svc
->ipvs
!= ipvs
))
2555 if (count
>= get
->num_services
)
2557 memset(&entry
, 0, sizeof(entry
));
2558 ip_vs_copy_service(&entry
, svc
);
2559 if (copy_to_user(&uptr
->entrytable
[count
],
2560 &entry
, sizeof(entry
))) {
2572 __ip_vs_get_dest_entries(struct netns_ipvs
*ipvs
, const struct ip_vs_get_dests
*get
,
2573 struct ip_vs_get_dests __user
*uptr
)
2575 struct ip_vs_service
*svc
;
2576 union nf_inet_addr addr
= { .ip
= get
->addr
};
2581 svc
= __ip_vs_svc_fwm_find(ipvs
, AF_INET
, get
->fwmark
);
2583 svc
= __ip_vs_service_find(ipvs
, AF_INET
, get
->protocol
, &addr
,
2589 struct ip_vs_dest
*dest
;
2590 struct ip_vs_dest_entry entry
;
2591 struct ip_vs_kstats kstats
;
2593 memset(&entry
, 0, sizeof(entry
));
2594 list_for_each_entry(dest
, &svc
->destinations
, n_list
) {
2595 if (count
>= get
->num_dests
)
2598 /* Cannot expose heterogeneous members via sockopt
2601 if (dest
->af
!= svc
->af
)
2604 entry
.addr
= dest
->addr
.ip
;
2605 entry
.port
= dest
->port
;
2606 entry
.conn_flags
= atomic_read(&dest
->conn_flags
);
2607 entry
.weight
= atomic_read(&dest
->weight
);
2608 entry
.u_threshold
= dest
->u_threshold
;
2609 entry
.l_threshold
= dest
->l_threshold
;
2610 entry
.activeconns
= atomic_read(&dest
->activeconns
);
2611 entry
.inactconns
= atomic_read(&dest
->inactconns
);
2612 entry
.persistconns
= atomic_read(&dest
->persistconns
);
2613 ip_vs_copy_stats(&kstats
, &dest
->stats
);
2614 ip_vs_export_stats_user(&entry
.stats
, &kstats
);
2615 if (copy_to_user(&uptr
->entrytable
[count
],
2616 &entry
, sizeof(entry
))) {
2628 __ip_vs_get_timeouts(struct netns_ipvs
*ipvs
, struct ip_vs_timeout_user
*u
)
2630 #if defined(CONFIG_IP_VS_PROTO_TCP) || defined(CONFIG_IP_VS_PROTO_UDP)
2631 struct ip_vs_proto_data
*pd
;
2634 memset(u
, 0, sizeof (*u
));
2636 #ifdef CONFIG_IP_VS_PROTO_TCP
2637 pd
= ip_vs_proto_data_get(ipvs
, IPPROTO_TCP
);
2638 u
->tcp_timeout
= pd
->timeout_table
[IP_VS_TCP_S_ESTABLISHED
] / HZ
;
2639 u
->tcp_fin_timeout
= pd
->timeout_table
[IP_VS_TCP_S_FIN_WAIT
] / HZ
;
2641 #ifdef CONFIG_IP_VS_PROTO_UDP
2642 pd
= ip_vs_proto_data_get(ipvs
, IPPROTO_UDP
);
2644 pd
->timeout_table
[IP_VS_UDP_S_NORMAL
] / HZ
;
2648 static const unsigned char get_arglen
[CMDID(IP_VS_SO_GET_MAX
) + 1] = {
2649 [CMDID(IP_VS_SO_GET_VERSION
)] = 64,
2650 [CMDID(IP_VS_SO_GET_INFO
)] = sizeof(struct ip_vs_getinfo
),
2651 [CMDID(IP_VS_SO_GET_SERVICES
)] = sizeof(struct ip_vs_get_services
),
2652 [CMDID(IP_VS_SO_GET_SERVICE
)] = sizeof(struct ip_vs_service_entry
),
2653 [CMDID(IP_VS_SO_GET_DESTS
)] = sizeof(struct ip_vs_get_dests
),
2654 [CMDID(IP_VS_SO_GET_TIMEOUT
)] = sizeof(struct ip_vs_timeout_user
),
2655 [CMDID(IP_VS_SO_GET_DAEMON
)] = 2 * sizeof(struct ip_vs_daemon_user
),
2658 union ip_vs_get_arglen
{
2659 char field_IP_VS_SO_GET_VERSION
[64];
2660 struct ip_vs_getinfo field_IP_VS_SO_GET_INFO
;
2661 struct ip_vs_get_services field_IP_VS_SO_GET_SERVICES
;
2662 struct ip_vs_service_entry field_IP_VS_SO_GET_SERVICE
;
2663 struct ip_vs_get_dests field_IP_VS_SO_GET_DESTS
;
2664 struct ip_vs_timeout_user field_IP_VS_SO_GET_TIMEOUT
;
2665 struct ip_vs_daemon_user field_IP_VS_SO_GET_DAEMON
[2];
2668 #define MAX_GET_ARGLEN sizeof(union ip_vs_get_arglen)
2671 do_ip_vs_get_ctl(struct sock
*sk
, int cmd
, void __user
*user
, int *len
)
2673 unsigned char arg
[MAX_GET_ARGLEN
];
2675 unsigned int copylen
;
2676 struct net
*net
= sock_net(sk
);
2677 struct netns_ipvs
*ipvs
= net_ipvs(net
);
2680 BUILD_BUG_ON(sizeof(arg
) > 255);
2681 if (!ns_capable(sock_net(sk
)->user_ns
, CAP_NET_ADMIN
))
2684 if (cmd
< IP_VS_BASE_CTL
|| cmd
> IP_VS_SO_GET_MAX
)
2687 copylen
= get_arglen
[CMDID(cmd
)];
2688 if (*len
< (int) copylen
) {
2689 IP_VS_DBG(1, "get_ctl: len %d < %u\n", *len
, copylen
);
2693 if (copy_from_user(arg
, user
, copylen
) != 0)
2696 * Handle daemons first since it has its own locking
2698 if (cmd
== IP_VS_SO_GET_DAEMON
) {
2699 struct ip_vs_daemon_user d
[2];
2701 memset(&d
, 0, sizeof(d
));
2702 mutex_lock(&ipvs
->sync_mutex
);
2703 if (ipvs
->sync_state
& IP_VS_STATE_MASTER
) {
2704 d
[0].state
= IP_VS_STATE_MASTER
;
2705 strlcpy(d
[0].mcast_ifn
, ipvs
->mcfg
.mcast_ifn
,
2706 sizeof(d
[0].mcast_ifn
));
2707 d
[0].syncid
= ipvs
->mcfg
.syncid
;
2709 if (ipvs
->sync_state
& IP_VS_STATE_BACKUP
) {
2710 d
[1].state
= IP_VS_STATE_BACKUP
;
2711 strlcpy(d
[1].mcast_ifn
, ipvs
->bcfg
.mcast_ifn
,
2712 sizeof(d
[1].mcast_ifn
));
2713 d
[1].syncid
= ipvs
->bcfg
.syncid
;
2715 if (copy_to_user(user
, &d
, sizeof(d
)) != 0)
2717 mutex_unlock(&ipvs
->sync_mutex
);
2721 mutex_lock(&__ip_vs_mutex
);
2723 case IP_VS_SO_GET_VERSION
:
2727 sprintf(buf
, "IP Virtual Server version %d.%d.%d (size=%d)",
2728 NVERSION(IP_VS_VERSION_CODE
), ip_vs_conn_tab_size
);
2729 if (copy_to_user(user
, buf
, strlen(buf
)+1) != 0) {
2733 *len
= strlen(buf
)+1;
2737 case IP_VS_SO_GET_INFO
:
2739 struct ip_vs_getinfo info
;
2740 info
.version
= IP_VS_VERSION_CODE
;
2741 info
.size
= ip_vs_conn_tab_size
;
2742 info
.num_services
= ipvs
->num_services
;
2743 if (copy_to_user(user
, &info
, sizeof(info
)) != 0)
2748 case IP_VS_SO_GET_SERVICES
:
2750 struct ip_vs_get_services
*get
;
2753 get
= (struct ip_vs_get_services
*)arg
;
2754 size
= sizeof(*get
) +
2755 sizeof(struct ip_vs_service_entry
) * get
->num_services
;
2757 pr_err("length: %u != %u\n", *len
, size
);
2761 ret
= __ip_vs_get_service_entries(ipvs
, get
, user
);
2765 case IP_VS_SO_GET_SERVICE
:
2767 struct ip_vs_service_entry
*entry
;
2768 struct ip_vs_service
*svc
;
2769 union nf_inet_addr addr
;
2771 entry
= (struct ip_vs_service_entry
*)arg
;
2772 addr
.ip
= entry
->addr
;
2775 svc
= __ip_vs_svc_fwm_find(ipvs
, AF_INET
, entry
->fwmark
);
2777 svc
= __ip_vs_service_find(ipvs
, AF_INET
,
2778 entry
->protocol
, &addr
,
2782 ip_vs_copy_service(entry
, svc
);
2783 if (copy_to_user(user
, entry
, sizeof(*entry
)) != 0)
2790 case IP_VS_SO_GET_DESTS
:
2792 struct ip_vs_get_dests
*get
;
2795 get
= (struct ip_vs_get_dests
*)arg
;
2796 size
= sizeof(*get
) +
2797 sizeof(struct ip_vs_dest_entry
) * get
->num_dests
;
2799 pr_err("length: %u != %u\n", *len
, size
);
2803 ret
= __ip_vs_get_dest_entries(ipvs
, get
, user
);
2807 case IP_VS_SO_GET_TIMEOUT
:
2809 struct ip_vs_timeout_user t
;
2811 __ip_vs_get_timeouts(ipvs
, &t
);
2812 if (copy_to_user(user
, &t
, sizeof(t
)) != 0)
2822 mutex_unlock(&__ip_vs_mutex
);
2827 static struct nf_sockopt_ops ip_vs_sockopts
= {
2829 .set_optmin
= IP_VS_BASE_CTL
,
2830 .set_optmax
= IP_VS_SO_SET_MAX
+1,
2831 .set
= do_ip_vs_set_ctl
,
2832 .get_optmin
= IP_VS_BASE_CTL
,
2833 .get_optmax
= IP_VS_SO_GET_MAX
+1,
2834 .get
= do_ip_vs_get_ctl
,
2835 .owner
= THIS_MODULE
,
2839 * Generic Netlink interface
2842 /* IPVS genetlink family */
2843 static struct genl_family ip_vs_genl_family
= {
2844 .id
= GENL_ID_GENERATE
,
2846 .name
= IPVS_GENL_NAME
,
2847 .version
= IPVS_GENL_VERSION
,
2848 .maxattr
= IPVS_CMD_MAX
,
2849 .netnsok
= true, /* Make ipvsadm to work on netns */
2852 /* Policy used for first-level command attributes */
2853 static const struct nla_policy ip_vs_cmd_policy
[IPVS_CMD_ATTR_MAX
+ 1] = {
2854 [IPVS_CMD_ATTR_SERVICE
] = { .type
= NLA_NESTED
},
2855 [IPVS_CMD_ATTR_DEST
] = { .type
= NLA_NESTED
},
2856 [IPVS_CMD_ATTR_DAEMON
] = { .type
= NLA_NESTED
},
2857 [IPVS_CMD_ATTR_TIMEOUT_TCP
] = { .type
= NLA_U32
},
2858 [IPVS_CMD_ATTR_TIMEOUT_TCP_FIN
] = { .type
= NLA_U32
},
2859 [IPVS_CMD_ATTR_TIMEOUT_UDP
] = { .type
= NLA_U32
},
2862 /* Policy used for attributes in nested attribute IPVS_CMD_ATTR_DAEMON */
2863 static const struct nla_policy ip_vs_daemon_policy
[IPVS_DAEMON_ATTR_MAX
+ 1] = {
2864 [IPVS_DAEMON_ATTR_STATE
] = { .type
= NLA_U32
},
2865 [IPVS_DAEMON_ATTR_MCAST_IFN
] = { .type
= NLA_NUL_STRING
,
2866 .len
= IP_VS_IFNAME_MAXLEN
},
2867 [IPVS_DAEMON_ATTR_SYNC_ID
] = { .type
= NLA_U32
},
2868 [IPVS_DAEMON_ATTR_SYNC_MAXLEN
] = { .type
= NLA_U16
},
2869 [IPVS_DAEMON_ATTR_MCAST_GROUP
] = { .type
= NLA_U32
},
2870 [IPVS_DAEMON_ATTR_MCAST_GROUP6
] = { .len
= sizeof(struct in6_addr
) },
2871 [IPVS_DAEMON_ATTR_MCAST_PORT
] = { .type
= NLA_U16
},
2872 [IPVS_DAEMON_ATTR_MCAST_TTL
] = { .type
= NLA_U8
},
2875 /* Policy used for attributes in nested attribute IPVS_CMD_ATTR_SERVICE */
2876 static const struct nla_policy ip_vs_svc_policy
[IPVS_SVC_ATTR_MAX
+ 1] = {
2877 [IPVS_SVC_ATTR_AF
] = { .type
= NLA_U16
},
2878 [IPVS_SVC_ATTR_PROTOCOL
] = { .type
= NLA_U16
},
2879 [IPVS_SVC_ATTR_ADDR
] = { .type
= NLA_BINARY
,
2880 .len
= sizeof(union nf_inet_addr
) },
2881 [IPVS_SVC_ATTR_PORT
] = { .type
= NLA_U16
},
2882 [IPVS_SVC_ATTR_FWMARK
] = { .type
= NLA_U32
},
2883 [IPVS_SVC_ATTR_SCHED_NAME
] = { .type
= NLA_NUL_STRING
,
2884 .len
= IP_VS_SCHEDNAME_MAXLEN
},
2885 [IPVS_SVC_ATTR_PE_NAME
] = { .type
= NLA_NUL_STRING
,
2886 .len
= IP_VS_PENAME_MAXLEN
},
2887 [IPVS_SVC_ATTR_FLAGS
] = { .type
= NLA_BINARY
,
2888 .len
= sizeof(struct ip_vs_flags
) },
2889 [IPVS_SVC_ATTR_TIMEOUT
] = { .type
= NLA_U32
},
2890 [IPVS_SVC_ATTR_NETMASK
] = { .type
= NLA_U32
},
2891 [IPVS_SVC_ATTR_STATS
] = { .type
= NLA_NESTED
},
2894 /* Policy used for attributes in nested attribute IPVS_CMD_ATTR_DEST */
2895 static const struct nla_policy ip_vs_dest_policy
[IPVS_DEST_ATTR_MAX
+ 1] = {
2896 [IPVS_DEST_ATTR_ADDR
] = { .type
= NLA_BINARY
,
2897 .len
= sizeof(union nf_inet_addr
) },
2898 [IPVS_DEST_ATTR_PORT
] = { .type
= NLA_U16
},
2899 [IPVS_DEST_ATTR_FWD_METHOD
] = { .type
= NLA_U32
},
2900 [IPVS_DEST_ATTR_WEIGHT
] = { .type
= NLA_U32
},
2901 [IPVS_DEST_ATTR_U_THRESH
] = { .type
= NLA_U32
},
2902 [IPVS_DEST_ATTR_L_THRESH
] = { .type
= NLA_U32
},
2903 [IPVS_DEST_ATTR_ACTIVE_CONNS
] = { .type
= NLA_U32
},
2904 [IPVS_DEST_ATTR_INACT_CONNS
] = { .type
= NLA_U32
},
2905 [IPVS_DEST_ATTR_PERSIST_CONNS
] = { .type
= NLA_U32
},
2906 [IPVS_DEST_ATTR_STATS
] = { .type
= NLA_NESTED
},
2907 [IPVS_DEST_ATTR_ADDR_FAMILY
] = { .type
= NLA_U16
},
2910 static int ip_vs_genl_fill_stats(struct sk_buff
*skb
, int container_type
,
2911 struct ip_vs_kstats
*kstats
)
2913 struct nlattr
*nl_stats
= nla_nest_start(skb
, container_type
);
2918 if (nla_put_u32(skb
, IPVS_STATS_ATTR_CONNS
, (u32
)kstats
->conns
) ||
2919 nla_put_u32(skb
, IPVS_STATS_ATTR_INPKTS
, (u32
)kstats
->inpkts
) ||
2920 nla_put_u32(skb
, IPVS_STATS_ATTR_OUTPKTS
, (u32
)kstats
->outpkts
) ||
2921 nla_put_u64_64bit(skb
, IPVS_STATS_ATTR_INBYTES
, kstats
->inbytes
,
2922 IPVS_STATS_ATTR_PAD
) ||
2923 nla_put_u64_64bit(skb
, IPVS_STATS_ATTR_OUTBYTES
, kstats
->outbytes
,
2924 IPVS_STATS_ATTR_PAD
) ||
2925 nla_put_u32(skb
, IPVS_STATS_ATTR_CPS
, (u32
)kstats
->cps
) ||
2926 nla_put_u32(skb
, IPVS_STATS_ATTR_INPPS
, (u32
)kstats
->inpps
) ||
2927 nla_put_u32(skb
, IPVS_STATS_ATTR_OUTPPS
, (u32
)kstats
->outpps
) ||
2928 nla_put_u32(skb
, IPVS_STATS_ATTR_INBPS
, (u32
)kstats
->inbps
) ||
2929 nla_put_u32(skb
, IPVS_STATS_ATTR_OUTBPS
, (u32
)kstats
->outbps
))
2930 goto nla_put_failure
;
2931 nla_nest_end(skb
, nl_stats
);
2936 nla_nest_cancel(skb
, nl_stats
);
2940 static int ip_vs_genl_fill_stats64(struct sk_buff
*skb
, int container_type
,
2941 struct ip_vs_kstats
*kstats
)
2943 struct nlattr
*nl_stats
= nla_nest_start(skb
, container_type
);
2948 if (nla_put_u64_64bit(skb
, IPVS_STATS_ATTR_CONNS
, kstats
->conns
,
2949 IPVS_STATS_ATTR_PAD
) ||
2950 nla_put_u64_64bit(skb
, IPVS_STATS_ATTR_INPKTS
, kstats
->inpkts
,
2951 IPVS_STATS_ATTR_PAD
) ||
2952 nla_put_u64_64bit(skb
, IPVS_STATS_ATTR_OUTPKTS
, kstats
->outpkts
,
2953 IPVS_STATS_ATTR_PAD
) ||
2954 nla_put_u64_64bit(skb
, IPVS_STATS_ATTR_INBYTES
, kstats
->inbytes
,
2955 IPVS_STATS_ATTR_PAD
) ||
2956 nla_put_u64_64bit(skb
, IPVS_STATS_ATTR_OUTBYTES
, kstats
->outbytes
,
2957 IPVS_STATS_ATTR_PAD
) ||
2958 nla_put_u64_64bit(skb
, IPVS_STATS_ATTR_CPS
, kstats
->cps
,
2959 IPVS_STATS_ATTR_PAD
) ||
2960 nla_put_u64_64bit(skb
, IPVS_STATS_ATTR_INPPS
, kstats
->inpps
,
2961 IPVS_STATS_ATTR_PAD
) ||
2962 nla_put_u64_64bit(skb
, IPVS_STATS_ATTR_OUTPPS
, kstats
->outpps
,
2963 IPVS_STATS_ATTR_PAD
) ||
2964 nla_put_u64_64bit(skb
, IPVS_STATS_ATTR_INBPS
, kstats
->inbps
,
2965 IPVS_STATS_ATTR_PAD
) ||
2966 nla_put_u64_64bit(skb
, IPVS_STATS_ATTR_OUTBPS
, kstats
->outbps
,
2967 IPVS_STATS_ATTR_PAD
))
2968 goto nla_put_failure
;
2969 nla_nest_end(skb
, nl_stats
);
2974 nla_nest_cancel(skb
, nl_stats
);
2978 static int ip_vs_genl_fill_service(struct sk_buff
*skb
,
2979 struct ip_vs_service
*svc
)
2981 struct ip_vs_scheduler
*sched
;
2982 struct ip_vs_pe
*pe
;
2983 struct nlattr
*nl_service
;
2984 struct ip_vs_flags flags
= { .flags
= svc
->flags
,
2986 struct ip_vs_kstats kstats
;
2989 nl_service
= nla_nest_start(skb
, IPVS_CMD_ATTR_SERVICE
);
2993 if (nla_put_u16(skb
, IPVS_SVC_ATTR_AF
, svc
->af
))
2994 goto nla_put_failure
;
2996 if (nla_put_u32(skb
, IPVS_SVC_ATTR_FWMARK
, svc
->fwmark
))
2997 goto nla_put_failure
;
2999 if (nla_put_u16(skb
, IPVS_SVC_ATTR_PROTOCOL
, svc
->protocol
) ||
3000 nla_put(skb
, IPVS_SVC_ATTR_ADDR
, sizeof(svc
->addr
), &svc
->addr
) ||
3001 nla_put_be16(skb
, IPVS_SVC_ATTR_PORT
, svc
->port
))
3002 goto nla_put_failure
;
3005 sched
= rcu_dereference_protected(svc
->scheduler
, 1);
3006 sched_name
= sched
? sched
->name
: "none";
3007 pe
= rcu_dereference_protected(svc
->pe
, 1);
3008 if (nla_put_string(skb
, IPVS_SVC_ATTR_SCHED_NAME
, sched_name
) ||
3009 (pe
&& nla_put_string(skb
, IPVS_SVC_ATTR_PE_NAME
, pe
->name
)) ||
3010 nla_put(skb
, IPVS_SVC_ATTR_FLAGS
, sizeof(flags
), &flags
) ||
3011 nla_put_u32(skb
, IPVS_SVC_ATTR_TIMEOUT
, svc
->timeout
/ HZ
) ||
3012 nla_put_be32(skb
, IPVS_SVC_ATTR_NETMASK
, svc
->netmask
))
3013 goto nla_put_failure
;
3014 ip_vs_copy_stats(&kstats
, &svc
->stats
);
3015 if (ip_vs_genl_fill_stats(skb
, IPVS_SVC_ATTR_STATS
, &kstats
))
3016 goto nla_put_failure
;
3017 if (ip_vs_genl_fill_stats64(skb
, IPVS_SVC_ATTR_STATS64
, &kstats
))
3018 goto nla_put_failure
;
3020 nla_nest_end(skb
, nl_service
);
3025 nla_nest_cancel(skb
, nl_service
);
3029 static int ip_vs_genl_dump_service(struct sk_buff
*skb
,
3030 struct ip_vs_service
*svc
,
3031 struct netlink_callback
*cb
)
3035 hdr
= genlmsg_put(skb
, NETLINK_CB(cb
->skb
).portid
, cb
->nlh
->nlmsg_seq
,
3036 &ip_vs_genl_family
, NLM_F_MULTI
,
3037 IPVS_CMD_NEW_SERVICE
);
3041 if (ip_vs_genl_fill_service(skb
, svc
) < 0)
3042 goto nla_put_failure
;
3044 genlmsg_end(skb
, hdr
);
3048 genlmsg_cancel(skb
, hdr
);
3052 static int ip_vs_genl_dump_services(struct sk_buff
*skb
,
3053 struct netlink_callback
*cb
)
3056 int start
= cb
->args
[0];
3057 struct ip_vs_service
*svc
;
3058 struct net
*net
= sock_net(skb
->sk
);
3059 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3061 mutex_lock(&__ip_vs_mutex
);
3062 for (i
= 0; i
< IP_VS_SVC_TAB_SIZE
; i
++) {
3063 hlist_for_each_entry(svc
, &ip_vs_svc_table
[i
], s_list
) {
3064 if (++idx
<= start
|| (svc
->ipvs
!= ipvs
))
3066 if (ip_vs_genl_dump_service(skb
, svc
, cb
) < 0) {
3068 goto nla_put_failure
;
3073 for (i
= 0; i
< IP_VS_SVC_TAB_SIZE
; i
++) {
3074 hlist_for_each_entry(svc
, &ip_vs_svc_fwm_table
[i
], f_list
) {
3075 if (++idx
<= start
|| (svc
->ipvs
!= ipvs
))
3077 if (ip_vs_genl_dump_service(skb
, svc
, cb
) < 0) {
3079 goto nla_put_failure
;
3085 mutex_unlock(&__ip_vs_mutex
);
3091 static int ip_vs_genl_parse_service(struct netns_ipvs
*ipvs
,
3092 struct ip_vs_service_user_kern
*usvc
,
3093 struct nlattr
*nla
, int full_entry
,
3094 struct ip_vs_service
**ret_svc
)
3096 struct nlattr
*attrs
[IPVS_SVC_ATTR_MAX
+ 1];
3097 struct nlattr
*nla_af
, *nla_port
, *nla_fwmark
, *nla_protocol
, *nla_addr
;
3098 struct ip_vs_service
*svc
;
3100 /* Parse mandatory identifying service fields first */
3102 nla_parse_nested(attrs
, IPVS_SVC_ATTR_MAX
, nla
, ip_vs_svc_policy
))
3105 nla_af
= attrs
[IPVS_SVC_ATTR_AF
];
3106 nla_protocol
= attrs
[IPVS_SVC_ATTR_PROTOCOL
];
3107 nla_addr
= attrs
[IPVS_SVC_ATTR_ADDR
];
3108 nla_port
= attrs
[IPVS_SVC_ATTR_PORT
];
3109 nla_fwmark
= attrs
[IPVS_SVC_ATTR_FWMARK
];
3111 if (!(nla_af
&& (nla_fwmark
|| (nla_port
&& nla_protocol
&& nla_addr
))))
3114 memset(usvc
, 0, sizeof(*usvc
));
3116 usvc
->af
= nla_get_u16(nla_af
);
3117 #ifdef CONFIG_IP_VS_IPV6
3118 if (usvc
->af
!= AF_INET
&& usvc
->af
!= AF_INET6
)
3120 if (usvc
->af
!= AF_INET
)
3122 return -EAFNOSUPPORT
;
3125 usvc
->protocol
= IPPROTO_TCP
;
3126 usvc
->fwmark
= nla_get_u32(nla_fwmark
);
3128 usvc
->protocol
= nla_get_u16(nla_protocol
);
3129 nla_memcpy(&usvc
->addr
, nla_addr
, sizeof(usvc
->addr
));
3130 usvc
->port
= nla_get_be16(nla_port
);
3136 svc
= __ip_vs_svc_fwm_find(ipvs
, usvc
->af
, usvc
->fwmark
);
3138 svc
= __ip_vs_service_find(ipvs
, usvc
->af
, usvc
->protocol
,
3139 &usvc
->addr
, usvc
->port
);
3143 /* If a full entry was requested, check for the additional fields */
3145 struct nlattr
*nla_sched
, *nla_flags
, *nla_pe
, *nla_timeout
,
3147 struct ip_vs_flags flags
;
3149 nla_sched
= attrs
[IPVS_SVC_ATTR_SCHED_NAME
];
3150 nla_pe
= attrs
[IPVS_SVC_ATTR_PE_NAME
];
3151 nla_flags
= attrs
[IPVS_SVC_ATTR_FLAGS
];
3152 nla_timeout
= attrs
[IPVS_SVC_ATTR_TIMEOUT
];
3153 nla_netmask
= attrs
[IPVS_SVC_ATTR_NETMASK
];
3155 if (!(nla_sched
&& nla_flags
&& nla_timeout
&& nla_netmask
))
3158 nla_memcpy(&flags
, nla_flags
, sizeof(flags
));
3160 /* prefill flags from service if it already exists */
3162 usvc
->flags
= svc
->flags
;
3164 /* set new flags from userland */
3165 usvc
->flags
= (usvc
->flags
& ~flags
.mask
) |
3166 (flags
.flags
& flags
.mask
);
3167 usvc
->sched_name
= nla_data(nla_sched
);
3168 usvc
->pe_name
= nla_pe
? nla_data(nla_pe
) : NULL
;
3169 usvc
->timeout
= nla_get_u32(nla_timeout
);
3170 usvc
->netmask
= nla_get_be32(nla_netmask
);
3176 static struct ip_vs_service
*ip_vs_genl_find_service(struct netns_ipvs
*ipvs
,
3179 struct ip_vs_service_user_kern usvc
;
3180 struct ip_vs_service
*svc
;
3183 ret
= ip_vs_genl_parse_service(ipvs
, &usvc
, nla
, 0, &svc
);
3184 return ret
? ERR_PTR(ret
) : svc
;
3187 static int ip_vs_genl_fill_dest(struct sk_buff
*skb
, struct ip_vs_dest
*dest
)
3189 struct nlattr
*nl_dest
;
3190 struct ip_vs_kstats kstats
;
3192 nl_dest
= nla_nest_start(skb
, IPVS_CMD_ATTR_DEST
);
3196 if (nla_put(skb
, IPVS_DEST_ATTR_ADDR
, sizeof(dest
->addr
), &dest
->addr
) ||
3197 nla_put_be16(skb
, IPVS_DEST_ATTR_PORT
, dest
->port
) ||
3198 nla_put_u32(skb
, IPVS_DEST_ATTR_FWD_METHOD
,
3199 (atomic_read(&dest
->conn_flags
) &
3200 IP_VS_CONN_F_FWD_MASK
)) ||
3201 nla_put_u32(skb
, IPVS_DEST_ATTR_WEIGHT
,
3202 atomic_read(&dest
->weight
)) ||
3203 nla_put_u32(skb
, IPVS_DEST_ATTR_U_THRESH
, dest
->u_threshold
) ||
3204 nla_put_u32(skb
, IPVS_DEST_ATTR_L_THRESH
, dest
->l_threshold
) ||
3205 nla_put_u32(skb
, IPVS_DEST_ATTR_ACTIVE_CONNS
,
3206 atomic_read(&dest
->activeconns
)) ||
3207 nla_put_u32(skb
, IPVS_DEST_ATTR_INACT_CONNS
,
3208 atomic_read(&dest
->inactconns
)) ||
3209 nla_put_u32(skb
, IPVS_DEST_ATTR_PERSIST_CONNS
,
3210 atomic_read(&dest
->persistconns
)) ||
3211 nla_put_u16(skb
, IPVS_DEST_ATTR_ADDR_FAMILY
, dest
->af
))
3212 goto nla_put_failure
;
3213 ip_vs_copy_stats(&kstats
, &dest
->stats
);
3214 if (ip_vs_genl_fill_stats(skb
, IPVS_DEST_ATTR_STATS
, &kstats
))
3215 goto nla_put_failure
;
3216 if (ip_vs_genl_fill_stats64(skb
, IPVS_DEST_ATTR_STATS64
, &kstats
))
3217 goto nla_put_failure
;
3219 nla_nest_end(skb
, nl_dest
);
3224 nla_nest_cancel(skb
, nl_dest
);
3228 static int ip_vs_genl_dump_dest(struct sk_buff
*skb
, struct ip_vs_dest
*dest
,
3229 struct netlink_callback
*cb
)
3233 hdr
= genlmsg_put(skb
, NETLINK_CB(cb
->skb
).portid
, cb
->nlh
->nlmsg_seq
,
3234 &ip_vs_genl_family
, NLM_F_MULTI
,
3239 if (ip_vs_genl_fill_dest(skb
, dest
) < 0)
3240 goto nla_put_failure
;
3242 genlmsg_end(skb
, hdr
);
3246 genlmsg_cancel(skb
, hdr
);
3250 static int ip_vs_genl_dump_dests(struct sk_buff
*skb
,
3251 struct netlink_callback
*cb
)
3254 int start
= cb
->args
[0];
3255 struct ip_vs_service
*svc
;
3256 struct ip_vs_dest
*dest
;
3257 struct nlattr
*attrs
[IPVS_CMD_ATTR_MAX
+ 1];
3258 struct net
*net
= sock_net(skb
->sk
);
3259 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3261 mutex_lock(&__ip_vs_mutex
);
3263 /* Try to find the service for which to dump destinations */
3264 if (nlmsg_parse(cb
->nlh
, GENL_HDRLEN
, attrs
,
3265 IPVS_CMD_ATTR_MAX
, ip_vs_cmd_policy
))
3269 svc
= ip_vs_genl_find_service(ipvs
, attrs
[IPVS_CMD_ATTR_SERVICE
]);
3270 if (IS_ERR(svc
) || svc
== NULL
)
3273 /* Dump the destinations */
3274 list_for_each_entry(dest
, &svc
->destinations
, n_list
) {
3277 if (ip_vs_genl_dump_dest(skb
, dest
, cb
) < 0) {
3279 goto nla_put_failure
;
3287 mutex_unlock(&__ip_vs_mutex
);
3292 static int ip_vs_genl_parse_dest(struct ip_vs_dest_user_kern
*udest
,
3293 struct nlattr
*nla
, int full_entry
)
3295 struct nlattr
*attrs
[IPVS_DEST_ATTR_MAX
+ 1];
3296 struct nlattr
*nla_addr
, *nla_port
;
3297 struct nlattr
*nla_addr_family
;
3299 /* Parse mandatory identifying destination fields first */
3301 nla_parse_nested(attrs
, IPVS_DEST_ATTR_MAX
, nla
, ip_vs_dest_policy
))
3304 nla_addr
= attrs
[IPVS_DEST_ATTR_ADDR
];
3305 nla_port
= attrs
[IPVS_DEST_ATTR_PORT
];
3306 nla_addr_family
= attrs
[IPVS_DEST_ATTR_ADDR_FAMILY
];
3308 if (!(nla_addr
&& nla_port
))
3311 memset(udest
, 0, sizeof(*udest
));
3313 nla_memcpy(&udest
->addr
, nla_addr
, sizeof(udest
->addr
));
3314 udest
->port
= nla_get_be16(nla_port
);
3316 if (nla_addr_family
)
3317 udest
->af
= nla_get_u16(nla_addr_family
);
3321 /* If a full entry was requested, check for the additional fields */
3323 struct nlattr
*nla_fwd
, *nla_weight
, *nla_u_thresh
,
3326 nla_fwd
= attrs
[IPVS_DEST_ATTR_FWD_METHOD
];
3327 nla_weight
= attrs
[IPVS_DEST_ATTR_WEIGHT
];
3328 nla_u_thresh
= attrs
[IPVS_DEST_ATTR_U_THRESH
];
3329 nla_l_thresh
= attrs
[IPVS_DEST_ATTR_L_THRESH
];
3331 if (!(nla_fwd
&& nla_weight
&& nla_u_thresh
&& nla_l_thresh
))
3334 udest
->conn_flags
= nla_get_u32(nla_fwd
)
3335 & IP_VS_CONN_F_FWD_MASK
;
3336 udest
->weight
= nla_get_u32(nla_weight
);
3337 udest
->u_threshold
= nla_get_u32(nla_u_thresh
);
3338 udest
->l_threshold
= nla_get_u32(nla_l_thresh
);
3344 static int ip_vs_genl_fill_daemon(struct sk_buff
*skb
, __u32 state
,
3345 struct ipvs_sync_daemon_cfg
*c
)
3347 struct nlattr
*nl_daemon
;
3349 nl_daemon
= nla_nest_start(skb
, IPVS_CMD_ATTR_DAEMON
);
3353 if (nla_put_u32(skb
, IPVS_DAEMON_ATTR_STATE
, state
) ||
3354 nla_put_string(skb
, IPVS_DAEMON_ATTR_MCAST_IFN
, c
->mcast_ifn
) ||
3355 nla_put_u32(skb
, IPVS_DAEMON_ATTR_SYNC_ID
, c
->syncid
) ||
3356 nla_put_u16(skb
, IPVS_DAEMON_ATTR_SYNC_MAXLEN
, c
->sync_maxlen
) ||
3357 nla_put_u16(skb
, IPVS_DAEMON_ATTR_MCAST_PORT
, c
->mcast_port
) ||
3358 nla_put_u8(skb
, IPVS_DAEMON_ATTR_MCAST_TTL
, c
->mcast_ttl
))
3359 goto nla_put_failure
;
3360 #ifdef CONFIG_IP_VS_IPV6
3361 if (c
->mcast_af
== AF_INET6
) {
3362 if (nla_put_in6_addr(skb
, IPVS_DAEMON_ATTR_MCAST_GROUP6
,
3363 &c
->mcast_group
.in6
))
3364 goto nla_put_failure
;
3367 if (c
->mcast_af
== AF_INET
&&
3368 nla_put_in_addr(skb
, IPVS_DAEMON_ATTR_MCAST_GROUP
,
3370 goto nla_put_failure
;
3371 nla_nest_end(skb
, nl_daemon
);
3376 nla_nest_cancel(skb
, nl_daemon
);
3380 static int ip_vs_genl_dump_daemon(struct sk_buff
*skb
, __u32 state
,
3381 struct ipvs_sync_daemon_cfg
*c
,
3382 struct netlink_callback
*cb
)
3385 hdr
= genlmsg_put(skb
, NETLINK_CB(cb
->skb
).portid
, cb
->nlh
->nlmsg_seq
,
3386 &ip_vs_genl_family
, NLM_F_MULTI
,
3387 IPVS_CMD_NEW_DAEMON
);
3391 if (ip_vs_genl_fill_daemon(skb
, state
, c
))
3392 goto nla_put_failure
;
3394 genlmsg_end(skb
, hdr
);
3398 genlmsg_cancel(skb
, hdr
);
3402 static int ip_vs_genl_dump_daemons(struct sk_buff
*skb
,
3403 struct netlink_callback
*cb
)
3405 struct net
*net
= sock_net(skb
->sk
);
3406 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3408 mutex_lock(&ipvs
->sync_mutex
);
3409 if ((ipvs
->sync_state
& IP_VS_STATE_MASTER
) && !cb
->args
[0]) {
3410 if (ip_vs_genl_dump_daemon(skb
, IP_VS_STATE_MASTER
,
3411 &ipvs
->mcfg
, cb
) < 0)
3412 goto nla_put_failure
;
3417 if ((ipvs
->sync_state
& IP_VS_STATE_BACKUP
) && !cb
->args
[1]) {
3418 if (ip_vs_genl_dump_daemon(skb
, IP_VS_STATE_BACKUP
,
3419 &ipvs
->bcfg
, cb
) < 0)
3420 goto nla_put_failure
;
3426 mutex_unlock(&ipvs
->sync_mutex
);
3431 static int ip_vs_genl_new_daemon(struct netns_ipvs
*ipvs
, struct nlattr
**attrs
)
3433 struct ipvs_sync_daemon_cfg c
;
3437 memset(&c
, 0, sizeof(c
));
3438 if (!(attrs
[IPVS_DAEMON_ATTR_STATE
] &&
3439 attrs
[IPVS_DAEMON_ATTR_MCAST_IFN
] &&
3440 attrs
[IPVS_DAEMON_ATTR_SYNC_ID
]))
3442 strlcpy(c
.mcast_ifn
, nla_data(attrs
[IPVS_DAEMON_ATTR_MCAST_IFN
]),
3443 sizeof(c
.mcast_ifn
));
3444 c
.syncid
= nla_get_u32(attrs
[IPVS_DAEMON_ATTR_SYNC_ID
]);
3446 a
= attrs
[IPVS_DAEMON_ATTR_SYNC_MAXLEN
];
3448 c
.sync_maxlen
= nla_get_u16(a
);
3450 a
= attrs
[IPVS_DAEMON_ATTR_MCAST_GROUP
];
3452 c
.mcast_af
= AF_INET
;
3453 c
.mcast_group
.ip
= nla_get_in_addr(a
);
3454 if (!ipv4_is_multicast(c
.mcast_group
.ip
))
3457 a
= attrs
[IPVS_DAEMON_ATTR_MCAST_GROUP6
];
3459 #ifdef CONFIG_IP_VS_IPV6
3462 c
.mcast_af
= AF_INET6
;
3463 c
.mcast_group
.in6
= nla_get_in6_addr(a
);
3464 addr_type
= ipv6_addr_type(&c
.mcast_group
.in6
);
3465 if (!(addr_type
& IPV6_ADDR_MULTICAST
))
3468 return -EAFNOSUPPORT
;
3473 a
= attrs
[IPVS_DAEMON_ATTR_MCAST_PORT
];
3475 c
.mcast_port
= nla_get_u16(a
);
3477 a
= attrs
[IPVS_DAEMON_ATTR_MCAST_TTL
];
3479 c
.mcast_ttl
= nla_get_u8(a
);
3481 /* The synchronization protocol is incompatible with mixed family
3484 if (ipvs
->mixed_address_family_dests
> 0)
3488 mutex_lock(&ipvs
->sync_mutex
);
3489 ret
= start_sync_thread(ipvs
, &c
,
3490 nla_get_u32(attrs
[IPVS_DAEMON_ATTR_STATE
]));
3491 mutex_unlock(&ipvs
->sync_mutex
);
3496 static int ip_vs_genl_del_daemon(struct netns_ipvs
*ipvs
, struct nlattr
**attrs
)
3500 if (!attrs
[IPVS_DAEMON_ATTR_STATE
])
3503 mutex_lock(&ipvs
->sync_mutex
);
3504 ret
= stop_sync_thread(ipvs
,
3505 nla_get_u32(attrs
[IPVS_DAEMON_ATTR_STATE
]));
3506 mutex_unlock(&ipvs
->sync_mutex
);
3510 static int ip_vs_genl_set_config(struct netns_ipvs
*ipvs
, struct nlattr
**attrs
)
3512 struct ip_vs_timeout_user t
;
3514 __ip_vs_get_timeouts(ipvs
, &t
);
3516 if (attrs
[IPVS_CMD_ATTR_TIMEOUT_TCP
])
3517 t
.tcp_timeout
= nla_get_u32(attrs
[IPVS_CMD_ATTR_TIMEOUT_TCP
]);
3519 if (attrs
[IPVS_CMD_ATTR_TIMEOUT_TCP_FIN
])
3521 nla_get_u32(attrs
[IPVS_CMD_ATTR_TIMEOUT_TCP_FIN
]);
3523 if (attrs
[IPVS_CMD_ATTR_TIMEOUT_UDP
])
3524 t
.udp_timeout
= nla_get_u32(attrs
[IPVS_CMD_ATTR_TIMEOUT_UDP
]);
3526 return ip_vs_set_timeout(ipvs
, &t
);
3529 static int ip_vs_genl_set_daemon(struct sk_buff
*skb
, struct genl_info
*info
)
3531 int ret
= -EINVAL
, cmd
;
3532 struct net
*net
= sock_net(skb
->sk
);
3533 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3535 cmd
= info
->genlhdr
->cmd
;
3537 if (cmd
== IPVS_CMD_NEW_DAEMON
|| cmd
== IPVS_CMD_DEL_DAEMON
) {
3538 struct nlattr
*daemon_attrs
[IPVS_DAEMON_ATTR_MAX
+ 1];
3540 if (!info
->attrs
[IPVS_CMD_ATTR_DAEMON
] ||
3541 nla_parse_nested(daemon_attrs
, IPVS_DAEMON_ATTR_MAX
,
3542 info
->attrs
[IPVS_CMD_ATTR_DAEMON
],
3543 ip_vs_daemon_policy
))
3546 if (cmd
== IPVS_CMD_NEW_DAEMON
)
3547 ret
= ip_vs_genl_new_daemon(ipvs
, daemon_attrs
);
3549 ret
= ip_vs_genl_del_daemon(ipvs
, daemon_attrs
);
3556 static int ip_vs_genl_set_cmd(struct sk_buff
*skb
, struct genl_info
*info
)
3558 struct ip_vs_service
*svc
= NULL
;
3559 struct ip_vs_service_user_kern usvc
;
3560 struct ip_vs_dest_user_kern udest
;
3562 int need_full_svc
= 0, need_full_dest
= 0;
3563 struct net
*net
= sock_net(skb
->sk
);
3564 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3566 cmd
= info
->genlhdr
->cmd
;
3568 mutex_lock(&__ip_vs_mutex
);
3570 if (cmd
== IPVS_CMD_FLUSH
) {
3571 ret
= ip_vs_flush(ipvs
, false);
3573 } else if (cmd
== IPVS_CMD_SET_CONFIG
) {
3574 ret
= ip_vs_genl_set_config(ipvs
, info
->attrs
);
3576 } else if (cmd
== IPVS_CMD_ZERO
&&
3577 !info
->attrs
[IPVS_CMD_ATTR_SERVICE
]) {
3578 ret
= ip_vs_zero_all(ipvs
);
3582 /* All following commands require a service argument, so check if we
3583 * received a valid one. We need a full service specification when
3584 * adding / editing a service. Only identifying members otherwise. */
3585 if (cmd
== IPVS_CMD_NEW_SERVICE
|| cmd
== IPVS_CMD_SET_SERVICE
)
3588 ret
= ip_vs_genl_parse_service(ipvs
, &usvc
,
3589 info
->attrs
[IPVS_CMD_ATTR_SERVICE
],
3590 need_full_svc
, &svc
);
3594 /* Unless we're adding a new service, the service must already exist */
3595 if ((cmd
!= IPVS_CMD_NEW_SERVICE
) && (svc
== NULL
)) {
3600 /* Destination commands require a valid destination argument. For
3601 * adding / editing a destination, we need a full destination
3603 if (cmd
== IPVS_CMD_NEW_DEST
|| cmd
== IPVS_CMD_SET_DEST
||
3604 cmd
== IPVS_CMD_DEL_DEST
) {
3605 if (cmd
!= IPVS_CMD_DEL_DEST
)
3608 ret
= ip_vs_genl_parse_dest(&udest
,
3609 info
->attrs
[IPVS_CMD_ATTR_DEST
],
3614 /* Old protocols did not allow the user to specify address
3615 * family, so we set it to zero instead. We also didn't
3616 * allow heterogeneous pools in the old code, so it's safe
3617 * to assume that this will have the same address family as
3623 if (udest
.af
!= svc
->af
&& cmd
!= IPVS_CMD_DEL_DEST
) {
3624 /* The synchronization protocol is incompatible
3625 * with mixed family services
3627 if (ipvs
->sync_state
) {
3632 /* Which connection types do we support? */
3633 switch (udest
.conn_flags
) {
3634 case IP_VS_CONN_F_TUNNEL
:
3635 /* We are able to forward this */
3645 case IPVS_CMD_NEW_SERVICE
:
3647 ret
= ip_vs_add_service(ipvs
, &usvc
, &svc
);
3651 case IPVS_CMD_SET_SERVICE
:
3652 ret
= ip_vs_edit_service(svc
, &usvc
);
3654 case IPVS_CMD_DEL_SERVICE
:
3655 ret
= ip_vs_del_service(svc
);
3656 /* do not use svc, it can be freed */
3658 case IPVS_CMD_NEW_DEST
:
3659 ret
= ip_vs_add_dest(svc
, &udest
);
3661 case IPVS_CMD_SET_DEST
:
3662 ret
= ip_vs_edit_dest(svc
, &udest
);
3664 case IPVS_CMD_DEL_DEST
:
3665 ret
= ip_vs_del_dest(svc
, &udest
);
3668 ret
= ip_vs_zero_service(svc
);
3675 mutex_unlock(&__ip_vs_mutex
);
3680 static int ip_vs_genl_get_cmd(struct sk_buff
*skb
, struct genl_info
*info
)
3682 struct sk_buff
*msg
;
3684 int ret
, cmd
, reply_cmd
;
3685 struct net
*net
= sock_net(skb
->sk
);
3686 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3688 cmd
= info
->genlhdr
->cmd
;
3690 if (cmd
== IPVS_CMD_GET_SERVICE
)
3691 reply_cmd
= IPVS_CMD_NEW_SERVICE
;
3692 else if (cmd
== IPVS_CMD_GET_INFO
)
3693 reply_cmd
= IPVS_CMD_SET_INFO
;
3694 else if (cmd
== IPVS_CMD_GET_CONFIG
)
3695 reply_cmd
= IPVS_CMD_SET_CONFIG
;
3697 pr_err("unknown Generic Netlink command\n");
3701 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_KERNEL
);
3705 mutex_lock(&__ip_vs_mutex
);
3707 reply
= genlmsg_put_reply(msg
, info
, &ip_vs_genl_family
, 0, reply_cmd
);
3709 goto nla_put_failure
;
3712 case IPVS_CMD_GET_SERVICE
:
3714 struct ip_vs_service
*svc
;
3716 svc
= ip_vs_genl_find_service(ipvs
,
3717 info
->attrs
[IPVS_CMD_ATTR_SERVICE
]);
3722 ret
= ip_vs_genl_fill_service(msg
, svc
);
3724 goto nla_put_failure
;
3733 case IPVS_CMD_GET_CONFIG
:
3735 struct ip_vs_timeout_user t
;
3737 __ip_vs_get_timeouts(ipvs
, &t
);
3738 #ifdef CONFIG_IP_VS_PROTO_TCP
3739 if (nla_put_u32(msg
, IPVS_CMD_ATTR_TIMEOUT_TCP
,
3741 nla_put_u32(msg
, IPVS_CMD_ATTR_TIMEOUT_TCP_FIN
,
3743 goto nla_put_failure
;
3745 #ifdef CONFIG_IP_VS_PROTO_UDP
3746 if (nla_put_u32(msg
, IPVS_CMD_ATTR_TIMEOUT_UDP
, t
.udp_timeout
))
3747 goto nla_put_failure
;
3753 case IPVS_CMD_GET_INFO
:
3754 if (nla_put_u32(msg
, IPVS_INFO_ATTR_VERSION
,
3755 IP_VS_VERSION_CODE
) ||
3756 nla_put_u32(msg
, IPVS_INFO_ATTR_CONN_TAB_SIZE
,
3757 ip_vs_conn_tab_size
))
3758 goto nla_put_failure
;
3762 genlmsg_end(msg
, reply
);
3763 ret
= genlmsg_reply(msg
, info
);
3767 pr_err("not enough space in Netlink message\n");
3773 mutex_unlock(&__ip_vs_mutex
);
3779 static const struct genl_ops ip_vs_genl_ops
[] = {
3781 .cmd
= IPVS_CMD_NEW_SERVICE
,
3782 .flags
= GENL_ADMIN_PERM
,
3783 .policy
= ip_vs_cmd_policy
,
3784 .doit
= ip_vs_genl_set_cmd
,
3787 .cmd
= IPVS_CMD_SET_SERVICE
,
3788 .flags
= GENL_ADMIN_PERM
,
3789 .policy
= ip_vs_cmd_policy
,
3790 .doit
= ip_vs_genl_set_cmd
,
3793 .cmd
= IPVS_CMD_DEL_SERVICE
,
3794 .flags
= GENL_ADMIN_PERM
,
3795 .policy
= ip_vs_cmd_policy
,
3796 .doit
= ip_vs_genl_set_cmd
,
3799 .cmd
= IPVS_CMD_GET_SERVICE
,
3800 .flags
= GENL_ADMIN_PERM
,
3801 .doit
= ip_vs_genl_get_cmd
,
3802 .dumpit
= ip_vs_genl_dump_services
,
3803 .policy
= ip_vs_cmd_policy
,
3806 .cmd
= IPVS_CMD_NEW_DEST
,
3807 .flags
= GENL_ADMIN_PERM
,
3808 .policy
= ip_vs_cmd_policy
,
3809 .doit
= ip_vs_genl_set_cmd
,
3812 .cmd
= IPVS_CMD_SET_DEST
,
3813 .flags
= GENL_ADMIN_PERM
,
3814 .policy
= ip_vs_cmd_policy
,
3815 .doit
= ip_vs_genl_set_cmd
,
3818 .cmd
= IPVS_CMD_DEL_DEST
,
3819 .flags
= GENL_ADMIN_PERM
,
3820 .policy
= ip_vs_cmd_policy
,
3821 .doit
= ip_vs_genl_set_cmd
,
3824 .cmd
= IPVS_CMD_GET_DEST
,
3825 .flags
= GENL_ADMIN_PERM
,
3826 .policy
= ip_vs_cmd_policy
,
3827 .dumpit
= ip_vs_genl_dump_dests
,
3830 .cmd
= IPVS_CMD_NEW_DAEMON
,
3831 .flags
= GENL_ADMIN_PERM
,
3832 .policy
= ip_vs_cmd_policy
,
3833 .doit
= ip_vs_genl_set_daemon
,
3836 .cmd
= IPVS_CMD_DEL_DAEMON
,
3837 .flags
= GENL_ADMIN_PERM
,
3838 .policy
= ip_vs_cmd_policy
,
3839 .doit
= ip_vs_genl_set_daemon
,
3842 .cmd
= IPVS_CMD_GET_DAEMON
,
3843 .flags
= GENL_ADMIN_PERM
,
3844 .dumpit
= ip_vs_genl_dump_daemons
,
3847 .cmd
= IPVS_CMD_SET_CONFIG
,
3848 .flags
= GENL_ADMIN_PERM
,
3849 .policy
= ip_vs_cmd_policy
,
3850 .doit
= ip_vs_genl_set_cmd
,
3853 .cmd
= IPVS_CMD_GET_CONFIG
,
3854 .flags
= GENL_ADMIN_PERM
,
3855 .doit
= ip_vs_genl_get_cmd
,
3858 .cmd
= IPVS_CMD_GET_INFO
,
3859 .flags
= GENL_ADMIN_PERM
,
3860 .doit
= ip_vs_genl_get_cmd
,
3863 .cmd
= IPVS_CMD_ZERO
,
3864 .flags
= GENL_ADMIN_PERM
,
3865 .policy
= ip_vs_cmd_policy
,
3866 .doit
= ip_vs_genl_set_cmd
,
3869 .cmd
= IPVS_CMD_FLUSH
,
3870 .flags
= GENL_ADMIN_PERM
,
3871 .doit
= ip_vs_genl_set_cmd
,
3875 static int __init
ip_vs_genl_register(void)
3877 return genl_register_family_with_ops(&ip_vs_genl_family
,
3881 static void ip_vs_genl_unregister(void)
3883 genl_unregister_family(&ip_vs_genl_family
);
3886 /* End of Generic Netlink interface definitions */
3889 * per netns intit/exit func.
3891 #ifdef CONFIG_SYSCTL
3892 static int __net_init
ip_vs_control_net_init_sysctl(struct netns_ipvs
*ipvs
)
3894 struct net
*net
= ipvs
->net
;
3896 struct ctl_table
*tbl
;
3898 atomic_set(&ipvs
->dropentry
, 0);
3899 spin_lock_init(&ipvs
->dropentry_lock
);
3900 spin_lock_init(&ipvs
->droppacket_lock
);
3901 spin_lock_init(&ipvs
->securetcp_lock
);
3903 if (!net_eq(net
, &init_net
)) {
3904 tbl
= kmemdup(vs_vars
, sizeof(vs_vars
), GFP_KERNEL
);
3908 /* Don't export sysctls to unprivileged users */
3909 if (net
->user_ns
!= &init_user_ns
)
3910 tbl
[0].procname
= NULL
;
3913 /* Initialize sysctl defaults */
3914 for (idx
= 0; idx
< ARRAY_SIZE(vs_vars
); idx
++) {
3915 if (tbl
[idx
].proc_handler
== proc_do_defense_mode
)
3916 tbl
[idx
].extra2
= ipvs
;
3919 ipvs
->sysctl_amemthresh
= 1024;
3920 tbl
[idx
++].data
= &ipvs
->sysctl_amemthresh
;
3921 ipvs
->sysctl_am_droprate
= 10;
3922 tbl
[idx
++].data
= &ipvs
->sysctl_am_droprate
;
3923 tbl
[idx
++].data
= &ipvs
->sysctl_drop_entry
;
3924 tbl
[idx
++].data
= &ipvs
->sysctl_drop_packet
;
3925 #ifdef CONFIG_IP_VS_NFCT
3926 tbl
[idx
++].data
= &ipvs
->sysctl_conntrack
;
3928 tbl
[idx
++].data
= &ipvs
->sysctl_secure_tcp
;
3929 ipvs
->sysctl_snat_reroute
= 1;
3930 tbl
[idx
++].data
= &ipvs
->sysctl_snat_reroute
;
3931 ipvs
->sysctl_sync_ver
= 1;
3932 tbl
[idx
++].data
= &ipvs
->sysctl_sync_ver
;
3933 ipvs
->sysctl_sync_ports
= 1;
3934 tbl
[idx
++].data
= &ipvs
->sysctl_sync_ports
;
3935 tbl
[idx
++].data
= &ipvs
->sysctl_sync_persist_mode
;
3936 ipvs
->sysctl_sync_qlen_max
= nr_free_buffer_pages() / 32;
3937 tbl
[idx
++].data
= &ipvs
->sysctl_sync_qlen_max
;
3938 ipvs
->sysctl_sync_sock_size
= 0;
3939 tbl
[idx
++].data
= &ipvs
->sysctl_sync_sock_size
;
3940 tbl
[idx
++].data
= &ipvs
->sysctl_cache_bypass
;
3941 tbl
[idx
++].data
= &ipvs
->sysctl_expire_nodest_conn
;
3942 tbl
[idx
++].data
= &ipvs
->sysctl_sloppy_tcp
;
3943 tbl
[idx
++].data
= &ipvs
->sysctl_sloppy_sctp
;
3944 tbl
[idx
++].data
= &ipvs
->sysctl_expire_quiescent_template
;
3945 ipvs
->sysctl_sync_threshold
[0] = DEFAULT_SYNC_THRESHOLD
;
3946 ipvs
->sysctl_sync_threshold
[1] = DEFAULT_SYNC_PERIOD
;
3947 tbl
[idx
].data
= &ipvs
->sysctl_sync_threshold
;
3948 tbl
[idx
++].maxlen
= sizeof(ipvs
->sysctl_sync_threshold
);
3949 ipvs
->sysctl_sync_refresh_period
= DEFAULT_SYNC_REFRESH_PERIOD
;
3950 tbl
[idx
++].data
= &ipvs
->sysctl_sync_refresh_period
;
3951 ipvs
->sysctl_sync_retries
= clamp_t(int, DEFAULT_SYNC_RETRIES
, 0, 3);
3952 tbl
[idx
++].data
= &ipvs
->sysctl_sync_retries
;
3953 tbl
[idx
++].data
= &ipvs
->sysctl_nat_icmp_send
;
3954 ipvs
->sysctl_pmtu_disc
= 1;
3955 tbl
[idx
++].data
= &ipvs
->sysctl_pmtu_disc
;
3956 tbl
[idx
++].data
= &ipvs
->sysctl_backup_only
;
3957 ipvs
->sysctl_conn_reuse_mode
= 1;
3958 tbl
[idx
++].data
= &ipvs
->sysctl_conn_reuse_mode
;
3959 tbl
[idx
++].data
= &ipvs
->sysctl_schedule_icmp
;
3960 tbl
[idx
++].data
= &ipvs
->sysctl_ignore_tunneled
;
3962 ipvs
->sysctl_hdr
= register_net_sysctl(net
, "net/ipv4/vs", tbl
);
3963 if (ipvs
->sysctl_hdr
== NULL
) {
3964 if (!net_eq(net
, &init_net
))
3968 ip_vs_start_estimator(ipvs
, &ipvs
->tot_stats
);
3969 ipvs
->sysctl_tbl
= tbl
;
3970 /* Schedule defense work */
3971 INIT_DELAYED_WORK(&ipvs
->defense_work
, defense_work_handler
);
3972 schedule_delayed_work(&ipvs
->defense_work
, DEFENSE_TIMER_PERIOD
);
3977 static void __net_exit
ip_vs_control_net_cleanup_sysctl(struct netns_ipvs
*ipvs
)
3979 struct net
*net
= ipvs
->net
;
3981 cancel_delayed_work_sync(&ipvs
->defense_work
);
3982 cancel_work_sync(&ipvs
->defense_work
.work
);
3983 unregister_net_sysctl_table(ipvs
->sysctl_hdr
);
3984 ip_vs_stop_estimator(ipvs
, &ipvs
->tot_stats
);
3986 if (!net_eq(net
, &init_net
))
3987 kfree(ipvs
->sysctl_tbl
);
3992 static int __net_init
ip_vs_control_net_init_sysctl(struct netns_ipvs
*ipvs
) { return 0; }
3993 static void __net_exit
ip_vs_control_net_cleanup_sysctl(struct netns_ipvs
*ipvs
) { }
3997 static struct notifier_block ip_vs_dst_notifier
= {
3998 .notifier_call
= ip_vs_dst_event
,
4001 int __net_init
ip_vs_control_net_init(struct netns_ipvs
*ipvs
)
4005 /* Initialize rs_table */
4006 for (idx
= 0; idx
< IP_VS_RTAB_SIZE
; idx
++)
4007 INIT_HLIST_HEAD(&ipvs
->rs_table
[idx
]);
4009 INIT_LIST_HEAD(&ipvs
->dest_trash
);
4010 spin_lock_init(&ipvs
->dest_trash_lock
);
4011 setup_timer(&ipvs
->dest_trash_timer
, ip_vs_dest_trash_expire
,
4012 (unsigned long) ipvs
);
4013 atomic_set(&ipvs
->ftpsvc_counter
, 0);
4014 atomic_set(&ipvs
->nullsvc_counter
, 0);
4015 atomic_set(&ipvs
->conn_out_counter
, 0);
4018 ipvs
->tot_stats
.cpustats
= alloc_percpu(struct ip_vs_cpu_stats
);
4019 if (!ipvs
->tot_stats
.cpustats
)
4022 for_each_possible_cpu(i
) {
4023 struct ip_vs_cpu_stats
*ipvs_tot_stats
;
4024 ipvs_tot_stats
= per_cpu_ptr(ipvs
->tot_stats
.cpustats
, i
);
4025 u64_stats_init(&ipvs_tot_stats
->syncp
);
4028 spin_lock_init(&ipvs
->tot_stats
.lock
);
4030 proc_create("ip_vs", 0, ipvs
->net
->proc_net
, &ip_vs_info_fops
);
4031 proc_create("ip_vs_stats", 0, ipvs
->net
->proc_net
, &ip_vs_stats_fops
);
4032 proc_create("ip_vs_stats_percpu", 0, ipvs
->net
->proc_net
,
4033 &ip_vs_stats_percpu_fops
);
4035 if (ip_vs_control_net_init_sysctl(ipvs
))
4041 free_percpu(ipvs
->tot_stats
.cpustats
);
4045 void __net_exit
ip_vs_control_net_cleanup(struct netns_ipvs
*ipvs
)
4047 ip_vs_trash_cleanup(ipvs
);
4048 ip_vs_control_net_cleanup_sysctl(ipvs
);
4049 remove_proc_entry("ip_vs_stats_percpu", ipvs
->net
->proc_net
);
4050 remove_proc_entry("ip_vs_stats", ipvs
->net
->proc_net
);
4051 remove_proc_entry("ip_vs", ipvs
->net
->proc_net
);
4052 free_percpu(ipvs
->tot_stats
.cpustats
);
4055 int __init
ip_vs_register_nl_ioctl(void)
4059 ret
= nf_register_sockopt(&ip_vs_sockopts
);
4061 pr_err("cannot register sockopt.\n");
4065 ret
= ip_vs_genl_register();
4067 pr_err("cannot register Generic Netlink interface.\n");
4073 nf_unregister_sockopt(&ip_vs_sockopts
);
4078 void ip_vs_unregister_nl_ioctl(void)
4080 ip_vs_genl_unregister();
4081 nf_unregister_sockopt(&ip_vs_sockopts
);
4084 int __init
ip_vs_control_init(void)
4091 /* Initialize svc_table, ip_vs_svc_fwm_table */
4092 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
4093 INIT_HLIST_HEAD(&ip_vs_svc_table
[idx
]);
4094 INIT_HLIST_HEAD(&ip_vs_svc_fwm_table
[idx
]);
4097 smp_wmb(); /* Do we really need it now ? */
4099 ret
= register_netdevice_notifier(&ip_vs_dst_notifier
);
4108 void ip_vs_control_cleanup(void)
4111 unregister_netdevice_notifier(&ip_vs_dst_notifier
);