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
->net
);
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 net
*net
, 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) net
>> 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 net
*net
, __u32 fwmark
)
290 return (((size_t)net
>>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
->net
, 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
->net
, 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 net
*net
, 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(net
, 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 && net_eq(svc
->net
, net
)) {
385 * Get service by {fwmark} in the service table.
387 static inline struct ip_vs_service
*
388 __ip_vs_svc_fwm_find(struct net
*net
, int af
, __u32 fwmark
)
391 struct ip_vs_service
*svc
;
393 /* Check for fwmark addressed entries */
394 hash
= ip_vs_svc_fwm_hashkey(net
, 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 && net_eq(svc
->net
, net
)) {
407 /* Find service, called under RCU lock */
408 struct ip_vs_service
*
409 ip_vs_service_find(struct net
*net
, int af
, __u32 fwmark
, __u16 protocol
,
410 const union nf_inet_addr
*vaddr
, __be16 vport
)
412 struct ip_vs_service
*svc
;
413 struct netns_ipvs
*ipvs
= net_ipvs(net
);
416 * Check the table hashed by fwmark first
419 svc
= __ip_vs_svc_fwm_find(net
, af
, fwmark
);
425 * Check the table hashed by <protocol,addr,port>
426 * for "full" addressed entries
428 svc
= __ip_vs_service_find(net
, af
, protocol
, vaddr
, vport
);
431 && protocol
== IPPROTO_TCP
432 && atomic_read(&ipvs
->ftpsvc_counter
)
433 && (vport
== FTPDATA
|| ntohs(vport
) >= PROT_SOCK
)) {
435 * Check if ftp service entry exists, the packet
436 * might belong to FTP data connections.
438 svc
= __ip_vs_service_find(net
, af
, protocol
, vaddr
, FTPPORT
);
442 && atomic_read(&ipvs
->nullsvc_counter
)) {
444 * Check if the catch-all port (port zero) exists
446 svc
= __ip_vs_service_find(net
, af
, protocol
, vaddr
, 0);
450 IP_VS_DBG_BUF(9, "lookup service: fwm %u %s %s:%u %s\n",
451 fwmark
, ip_vs_proto_name(protocol
),
452 IP_VS_DBG_ADDR(af
, vaddr
), ntohs(vport
),
453 svc
? "hit" : "not hit");
460 __ip_vs_bind_svc(struct ip_vs_dest
*dest
, struct ip_vs_service
*svc
)
462 atomic_inc(&svc
->refcnt
);
463 rcu_assign_pointer(dest
->svc
, svc
);
466 static void ip_vs_service_free(struct ip_vs_service
*svc
)
468 if (svc
->stats
.cpustats
)
469 free_percpu(svc
->stats
.cpustats
);
473 static void ip_vs_service_rcu_free(struct rcu_head
*head
)
475 struct ip_vs_service
*svc
;
477 svc
= container_of(head
, struct ip_vs_service
, rcu_head
);
478 ip_vs_service_free(svc
);
481 static void __ip_vs_svc_put(struct ip_vs_service
*svc
, bool do_delay
)
483 if (atomic_dec_and_test(&svc
->refcnt
)) {
484 IP_VS_DBG_BUF(3, "Removing service %u/%s:%u\n",
486 IP_VS_DBG_ADDR(svc
->af
, &svc
->addr
),
489 call_rcu(&svc
->rcu_head
, ip_vs_service_rcu_free
);
491 ip_vs_service_free(svc
);
497 * Returns hash value for real service
499 static inline unsigned int ip_vs_rs_hashkey(int af
,
500 const union nf_inet_addr
*addr
,
503 register unsigned int porth
= ntohs(port
);
504 __be32 addr_fold
= addr
->ip
;
506 #ifdef CONFIG_IP_VS_IPV6
508 addr_fold
= addr
->ip6
[0]^addr
->ip6
[1]^
509 addr
->ip6
[2]^addr
->ip6
[3];
512 return (ntohl(addr_fold
)^(porth
>>IP_VS_RTAB_BITS
)^porth
)
516 /* Hash ip_vs_dest in rs_table by <proto,addr,port>. */
517 static void ip_vs_rs_hash(struct netns_ipvs
*ipvs
, struct ip_vs_dest
*dest
)
521 if (dest
->in_rs_table
)
525 * Hash by proto,addr,port,
526 * which are the parameters of the real service.
528 hash
= ip_vs_rs_hashkey(dest
->af
, &dest
->addr
, dest
->port
);
530 hlist_add_head_rcu(&dest
->d_list
, &ipvs
->rs_table
[hash
]);
531 dest
->in_rs_table
= 1;
534 /* Unhash ip_vs_dest from rs_table. */
535 static void ip_vs_rs_unhash(struct ip_vs_dest
*dest
)
538 * Remove it from the rs_table table.
540 if (dest
->in_rs_table
) {
541 hlist_del_rcu(&dest
->d_list
);
542 dest
->in_rs_table
= 0;
546 /* Check if real service by <proto,addr,port> is present */
547 bool ip_vs_has_real_service(struct net
*net
, int af
, __u16 protocol
,
548 const union nf_inet_addr
*daddr
, __be16 dport
)
550 struct netns_ipvs
*ipvs
= net_ipvs(net
);
552 struct ip_vs_dest
*dest
;
554 /* Check for "full" addressed entries */
555 hash
= ip_vs_rs_hashkey(af
, daddr
, dport
);
558 hlist_for_each_entry_rcu(dest
, &ipvs
->rs_table
[hash
], d_list
) {
559 if (dest
->port
== dport
&&
561 ip_vs_addr_equal(af
, &dest
->addr
, daddr
) &&
562 (dest
->protocol
== protocol
|| dest
->vfwmark
)) {
573 /* Lookup destination by {addr,port} in the given service
574 * Called under RCU lock.
576 static struct ip_vs_dest
*
577 ip_vs_lookup_dest(struct ip_vs_service
*svc
, const union nf_inet_addr
*daddr
,
580 struct ip_vs_dest
*dest
;
583 * Find the destination for the given service
585 list_for_each_entry_rcu(dest
, &svc
->destinations
, n_list
) {
586 if ((dest
->af
== svc
->af
)
587 && ip_vs_addr_equal(svc
->af
, &dest
->addr
, daddr
)
588 && (dest
->port
== dport
)) {
598 * Find destination by {daddr,dport,vaddr,protocol}
599 * Created to be used in ip_vs_process_message() in
600 * the backup synchronization daemon. It finds the
601 * destination to be bound to the received connection
603 * Called under RCU lock, no refcnt is returned.
605 struct ip_vs_dest
*ip_vs_find_dest(struct net
*net
, int af
,
606 const union nf_inet_addr
*daddr
,
608 const union nf_inet_addr
*vaddr
,
609 __be16 vport
, __u16 protocol
, __u32 fwmark
,
612 struct ip_vs_dest
*dest
;
613 struct ip_vs_service
*svc
;
616 svc
= ip_vs_service_find(net
, af
, fwmark
, protocol
, vaddr
, vport
);
619 if (fwmark
&& (flags
& IP_VS_CONN_F_FWD_MASK
) != IP_VS_CONN_F_MASQ
)
621 dest
= ip_vs_lookup_dest(svc
, daddr
, port
);
623 dest
= ip_vs_lookup_dest(svc
, daddr
, port
^ dport
);
627 void ip_vs_dest_dst_rcu_free(struct rcu_head
*head
)
629 struct ip_vs_dest_dst
*dest_dst
= container_of(head
,
630 struct ip_vs_dest_dst
,
633 dst_release(dest_dst
->dst_cache
);
637 /* Release dest_dst and dst_cache for dest in user context */
638 static void __ip_vs_dst_cache_reset(struct ip_vs_dest
*dest
)
640 struct ip_vs_dest_dst
*old
;
642 old
= rcu_dereference_protected(dest
->dest_dst
, 1);
644 RCU_INIT_POINTER(dest
->dest_dst
, NULL
);
645 call_rcu(&old
->rcu_head
, ip_vs_dest_dst_rcu_free
);
650 * Lookup dest by {svc,addr,port} in the destination trash.
651 * The destination trash is used to hold the destinations that are removed
652 * from the service table but are still referenced by some conn entries.
653 * The reason to add the destination trash is when the dest is temporary
654 * down (either by administrator or by monitor program), the dest can be
655 * picked back from the trash, the remaining connections to the dest can
656 * continue, and the counting information of the dest is also useful for
659 static struct ip_vs_dest
*
660 ip_vs_trash_get_dest(struct ip_vs_service
*svc
, const union nf_inet_addr
*daddr
,
663 struct ip_vs_dest
*dest
;
664 struct netns_ipvs
*ipvs
= net_ipvs(svc
->net
);
667 * Find the destination in trash
669 spin_lock_bh(&ipvs
->dest_trash_lock
);
670 list_for_each_entry(dest
, &ipvs
->dest_trash
, t_list
) {
671 IP_VS_DBG_BUF(3, "Destination %u/%s:%u still in trash, "
674 IP_VS_DBG_ADDR(svc
->af
, &dest
->addr
),
676 atomic_read(&dest
->refcnt
));
677 if (dest
->af
== svc
->af
&&
678 ip_vs_addr_equal(svc
->af
, &dest
->addr
, daddr
) &&
679 dest
->port
== dport
&&
680 dest
->vfwmark
== svc
->fwmark
&&
681 dest
->protocol
== svc
->protocol
&&
683 (ip_vs_addr_equal(svc
->af
, &dest
->vaddr
, &svc
->addr
) &&
684 dest
->vport
== svc
->port
))) {
686 list_del(&dest
->t_list
);
687 ip_vs_dest_hold(dest
);
695 spin_unlock_bh(&ipvs
->dest_trash_lock
);
700 static void ip_vs_dest_free(struct ip_vs_dest
*dest
)
702 struct ip_vs_service
*svc
= rcu_dereference_protected(dest
->svc
, 1);
704 __ip_vs_dst_cache_reset(dest
);
705 __ip_vs_svc_put(svc
, false);
706 free_percpu(dest
->stats
.cpustats
);
707 ip_vs_dest_put_and_free(dest
);
711 * Clean up all the destinations in the trash
712 * Called by the ip_vs_control_cleanup()
714 * When the ip_vs_control_clearup is activated by ipvs module exit,
715 * the service tables must have been flushed and all the connections
716 * are expired, and the refcnt of each destination in the trash must
717 * be 0, so we simply release them here.
719 static void ip_vs_trash_cleanup(struct net
*net
)
721 struct ip_vs_dest
*dest
, *nxt
;
722 struct netns_ipvs
*ipvs
= net_ipvs(net
);
724 del_timer_sync(&ipvs
->dest_trash_timer
);
725 /* No need to use dest_trash_lock */
726 list_for_each_entry_safe(dest
, nxt
, &ipvs
->dest_trash
, t_list
) {
727 list_del(&dest
->t_list
);
728 ip_vs_dest_free(dest
);
733 ip_vs_copy_stats(struct ip_vs_stats_user
*dst
, struct ip_vs_stats
*src
)
735 #define IP_VS_SHOW_STATS_COUNTER(c) dst->c = src->ustats.c - src->ustats0.c
737 spin_lock_bh(&src
->lock
);
739 IP_VS_SHOW_STATS_COUNTER(conns
);
740 IP_VS_SHOW_STATS_COUNTER(inpkts
);
741 IP_VS_SHOW_STATS_COUNTER(outpkts
);
742 IP_VS_SHOW_STATS_COUNTER(inbytes
);
743 IP_VS_SHOW_STATS_COUNTER(outbytes
);
745 ip_vs_read_estimator(dst
, src
);
747 spin_unlock_bh(&src
->lock
);
751 ip_vs_zero_stats(struct ip_vs_stats
*stats
)
753 spin_lock_bh(&stats
->lock
);
755 /* get current counters as zero point, rates are zeroed */
757 #define IP_VS_ZERO_STATS_COUNTER(c) stats->ustats0.c = stats->ustats.c
759 IP_VS_ZERO_STATS_COUNTER(conns
);
760 IP_VS_ZERO_STATS_COUNTER(inpkts
);
761 IP_VS_ZERO_STATS_COUNTER(outpkts
);
762 IP_VS_ZERO_STATS_COUNTER(inbytes
);
763 IP_VS_ZERO_STATS_COUNTER(outbytes
);
765 ip_vs_zero_estimator(stats
);
767 spin_unlock_bh(&stats
->lock
);
771 * Update a destination in the given service
774 __ip_vs_update_dest(struct ip_vs_service
*svc
, struct ip_vs_dest
*dest
,
775 struct ip_vs_dest_user_kern
*udest
, int add
)
777 struct netns_ipvs
*ipvs
= net_ipvs(svc
->net
);
778 struct ip_vs_service
*old_svc
;
779 struct ip_vs_scheduler
*sched
;
782 /* set the weight and the flags */
783 atomic_set(&dest
->weight
, udest
->weight
);
784 conn_flags
= udest
->conn_flags
& IP_VS_CONN_F_DEST_MASK
;
785 conn_flags
|= IP_VS_CONN_F_INACTIVE
;
787 /* set the IP_VS_CONN_F_NOOUTPUT flag if not masquerading/NAT */
788 if ((conn_flags
& IP_VS_CONN_F_FWD_MASK
) != IP_VS_CONN_F_MASQ
) {
789 conn_flags
|= IP_VS_CONN_F_NOOUTPUT
;
792 * Put the real service in rs_table if not present.
793 * For now only for NAT!
795 ip_vs_rs_hash(ipvs
, dest
);
797 atomic_set(&dest
->conn_flags
, conn_flags
);
799 /* bind the service */
800 old_svc
= rcu_dereference_protected(dest
->svc
, 1);
802 __ip_vs_bind_svc(dest
, svc
);
804 if (old_svc
!= svc
) {
805 ip_vs_zero_stats(&dest
->stats
);
806 __ip_vs_bind_svc(dest
, svc
);
807 __ip_vs_svc_put(old_svc
, true);
811 /* set the dest status flags */
812 dest
->flags
|= IP_VS_DEST_F_AVAILABLE
;
814 if (udest
->u_threshold
== 0 || udest
->u_threshold
> dest
->u_threshold
)
815 dest
->flags
&= ~IP_VS_DEST_F_OVERLOAD
;
816 dest
->u_threshold
= udest
->u_threshold
;
817 dest
->l_threshold
= udest
->l_threshold
;
819 spin_lock_bh(&dest
->dst_lock
);
820 __ip_vs_dst_cache_reset(dest
);
821 spin_unlock_bh(&dest
->dst_lock
);
823 sched
= rcu_dereference_protected(svc
->scheduler
, 1);
825 ip_vs_start_estimator(svc
->net
, &dest
->stats
);
826 list_add_rcu(&dest
->n_list
, &svc
->destinations
);
829 sched
->add_dest(svc
, dest
);
832 sched
->upd_dest(svc
, dest
);
838 * Create a destination for the given service
841 ip_vs_new_dest(struct ip_vs_service
*svc
, struct ip_vs_dest_user_kern
*udest
,
842 struct ip_vs_dest
**dest_p
)
844 struct ip_vs_dest
*dest
;
849 #ifdef CONFIG_IP_VS_IPV6
850 if (svc
->af
== AF_INET6
) {
851 atype
= ipv6_addr_type(&udest
->addr
.in6
);
852 if ((!(atype
& IPV6_ADDR_UNICAST
) ||
853 atype
& IPV6_ADDR_LINKLOCAL
) &&
854 !__ip_vs_addr_is_local_v6(svc
->net
, &udest
->addr
.in6
))
859 atype
= inet_addr_type(svc
->net
, udest
->addr
.ip
);
860 if (atype
!= RTN_LOCAL
&& atype
!= RTN_UNICAST
)
864 dest
= kzalloc(sizeof(struct ip_vs_dest
), GFP_KERNEL
);
868 dest
->stats
.cpustats
= alloc_percpu(struct ip_vs_cpu_stats
);
869 if (!dest
->stats
.cpustats
)
873 dest
->protocol
= svc
->protocol
;
874 dest
->vaddr
= svc
->addr
;
875 dest
->vport
= svc
->port
;
876 dest
->vfwmark
= svc
->fwmark
;
877 ip_vs_addr_copy(svc
->af
, &dest
->addr
, &udest
->addr
);
878 dest
->port
= udest
->port
;
880 atomic_set(&dest
->activeconns
, 0);
881 atomic_set(&dest
->inactconns
, 0);
882 atomic_set(&dest
->persistconns
, 0);
883 atomic_set(&dest
->refcnt
, 1);
885 INIT_HLIST_NODE(&dest
->d_list
);
886 spin_lock_init(&dest
->dst_lock
);
887 spin_lock_init(&dest
->stats
.lock
);
888 __ip_vs_update_dest(svc
, dest
, udest
, 1);
902 * Add a destination into an existing service
905 ip_vs_add_dest(struct ip_vs_service
*svc
, struct ip_vs_dest_user_kern
*udest
)
907 struct ip_vs_dest
*dest
;
908 union nf_inet_addr daddr
;
909 __be16 dport
= udest
->port
;
914 if (udest
->weight
< 0) {
915 pr_err("%s(): server weight less than zero\n", __func__
);
919 if (udest
->l_threshold
> udest
->u_threshold
) {
920 pr_err("%s(): lower threshold is higher than upper threshold\n",
925 ip_vs_addr_copy(svc
->af
, &daddr
, &udest
->addr
);
927 /* We use function that requires RCU lock */
929 dest
= ip_vs_lookup_dest(svc
, &daddr
, dport
);
933 IP_VS_DBG(1, "%s(): dest already exists\n", __func__
);
938 * Check if the dest already exists in the trash and
939 * is from the same service
941 dest
= ip_vs_trash_get_dest(svc
, &daddr
, dport
);
944 IP_VS_DBG_BUF(3, "Get destination %s:%u from trash, "
945 "dest->refcnt=%d, service %u/%s:%u\n",
946 IP_VS_DBG_ADDR(svc
->af
, &daddr
), ntohs(dport
),
947 atomic_read(&dest
->refcnt
),
949 IP_VS_DBG_ADDR(svc
->af
, &dest
->vaddr
),
952 __ip_vs_update_dest(svc
, dest
, udest
, 1);
956 * Allocate and initialize the dest structure
958 ret
= ip_vs_new_dest(svc
, udest
, &dest
);
967 * Edit a destination in the given service
970 ip_vs_edit_dest(struct ip_vs_service
*svc
, struct ip_vs_dest_user_kern
*udest
)
972 struct ip_vs_dest
*dest
;
973 union nf_inet_addr daddr
;
974 __be16 dport
= udest
->port
;
978 if (udest
->weight
< 0) {
979 pr_err("%s(): server weight less than zero\n", __func__
);
983 if (udest
->l_threshold
> udest
->u_threshold
) {
984 pr_err("%s(): lower threshold is higher than upper threshold\n",
989 ip_vs_addr_copy(svc
->af
, &daddr
, &udest
->addr
);
991 /* We use function that requires RCU lock */
993 dest
= ip_vs_lookup_dest(svc
, &daddr
, dport
);
997 IP_VS_DBG(1, "%s(): dest doesn't exist\n", __func__
);
1001 __ip_vs_update_dest(svc
, dest
, udest
, 0);
1008 * Delete a destination (must be already unlinked from the service)
1010 static void __ip_vs_del_dest(struct net
*net
, struct ip_vs_dest
*dest
,
1013 struct netns_ipvs
*ipvs
= net_ipvs(net
);
1015 ip_vs_stop_estimator(net
, &dest
->stats
);
1018 * Remove it from the d-linked list with the real services.
1020 ip_vs_rs_unhash(dest
);
1022 spin_lock_bh(&ipvs
->dest_trash_lock
);
1023 IP_VS_DBG_BUF(3, "Moving dest %s:%u into trash, dest->refcnt=%d\n",
1024 IP_VS_DBG_ADDR(dest
->af
, &dest
->addr
), ntohs(dest
->port
),
1025 atomic_read(&dest
->refcnt
));
1026 if (list_empty(&ipvs
->dest_trash
) && !cleanup
)
1027 mod_timer(&ipvs
->dest_trash_timer
,
1028 jiffies
+ (IP_VS_DEST_TRASH_PERIOD
>> 1));
1029 /* dest lives in trash without reference */
1030 list_add(&dest
->t_list
, &ipvs
->dest_trash
);
1031 dest
->idle_start
= 0;
1032 spin_unlock_bh(&ipvs
->dest_trash_lock
);
1033 ip_vs_dest_put(dest
);
1038 * Unlink a destination from the given service
1040 static void __ip_vs_unlink_dest(struct ip_vs_service
*svc
,
1041 struct ip_vs_dest
*dest
,
1044 dest
->flags
&= ~IP_VS_DEST_F_AVAILABLE
;
1047 * Remove it from the d-linked destination list.
1049 list_del_rcu(&dest
->n_list
);
1053 struct ip_vs_scheduler
*sched
;
1055 sched
= rcu_dereference_protected(svc
->scheduler
, 1);
1056 if (sched
->del_dest
)
1057 sched
->del_dest(svc
, dest
);
1063 * Delete a destination server in the given service
1066 ip_vs_del_dest(struct ip_vs_service
*svc
, struct ip_vs_dest_user_kern
*udest
)
1068 struct ip_vs_dest
*dest
;
1069 __be16 dport
= udest
->port
;
1073 /* We use function that requires RCU lock */
1075 dest
= ip_vs_lookup_dest(svc
, &udest
->addr
, dport
);
1079 IP_VS_DBG(1, "%s(): destination not found!\n", __func__
);
1084 * Unlink dest from the service
1086 __ip_vs_unlink_dest(svc
, dest
, 1);
1089 * Delete the destination
1091 __ip_vs_del_dest(svc
->net
, dest
, false);
1098 static void ip_vs_dest_trash_expire(unsigned long data
)
1100 struct net
*net
= (struct net
*) data
;
1101 struct netns_ipvs
*ipvs
= net_ipvs(net
);
1102 struct ip_vs_dest
*dest
, *next
;
1103 unsigned long now
= jiffies
;
1105 spin_lock(&ipvs
->dest_trash_lock
);
1106 list_for_each_entry_safe(dest
, next
, &ipvs
->dest_trash
, t_list
) {
1107 if (atomic_read(&dest
->refcnt
) > 0)
1109 if (dest
->idle_start
) {
1110 if (time_before(now
, dest
->idle_start
+
1111 IP_VS_DEST_TRASH_PERIOD
))
1114 dest
->idle_start
= max(1UL, now
);
1117 IP_VS_DBG_BUF(3, "Removing destination %u/%s:%u from trash\n",
1119 IP_VS_DBG_ADDR(dest
->af
, &dest
->addr
),
1121 list_del(&dest
->t_list
);
1122 ip_vs_dest_free(dest
);
1124 if (!list_empty(&ipvs
->dest_trash
))
1125 mod_timer(&ipvs
->dest_trash_timer
,
1126 jiffies
+ (IP_VS_DEST_TRASH_PERIOD
>> 1));
1127 spin_unlock(&ipvs
->dest_trash_lock
);
1131 * Add a service into the service hash table
1134 ip_vs_add_service(struct net
*net
, struct ip_vs_service_user_kern
*u
,
1135 struct ip_vs_service
**svc_p
)
1138 struct ip_vs_scheduler
*sched
= NULL
;
1139 struct ip_vs_pe
*pe
= NULL
;
1140 struct ip_vs_service
*svc
= NULL
;
1141 struct netns_ipvs
*ipvs
= net_ipvs(net
);
1143 /* increase the module use count */
1144 ip_vs_use_count_inc();
1146 /* Lookup the scheduler by 'u->sched_name' */
1147 sched
= ip_vs_scheduler_get(u
->sched_name
);
1148 if (sched
== NULL
) {
1149 pr_info("Scheduler module ip_vs_%s not found\n", u
->sched_name
);
1154 if (u
->pe_name
&& *u
->pe_name
) {
1155 pe
= ip_vs_pe_getbyname(u
->pe_name
);
1157 pr_info("persistence engine module ip_vs_pe_%s "
1158 "not found\n", u
->pe_name
);
1164 #ifdef CONFIG_IP_VS_IPV6
1165 if (u
->af
== AF_INET6
) {
1166 __u32 plen
= (__force __u32
) u
->netmask
;
1168 if (plen
< 1 || plen
> 128) {
1175 svc
= kzalloc(sizeof(struct ip_vs_service
), GFP_KERNEL
);
1177 IP_VS_DBG(1, "%s(): no memory\n", __func__
);
1181 svc
->stats
.cpustats
= alloc_percpu(struct ip_vs_cpu_stats
);
1182 if (!svc
->stats
.cpustats
) {
1187 /* I'm the first user of the service */
1188 atomic_set(&svc
->refcnt
, 0);
1191 svc
->protocol
= u
->protocol
;
1192 ip_vs_addr_copy(svc
->af
, &svc
->addr
, &u
->addr
);
1193 svc
->port
= u
->port
;
1194 svc
->fwmark
= u
->fwmark
;
1195 svc
->flags
= u
->flags
;
1196 svc
->timeout
= u
->timeout
* HZ
;
1197 svc
->netmask
= u
->netmask
;
1200 INIT_LIST_HEAD(&svc
->destinations
);
1201 spin_lock_init(&svc
->sched_lock
);
1202 spin_lock_init(&svc
->stats
.lock
);
1204 /* Bind the scheduler */
1205 ret
= ip_vs_bind_scheduler(svc
, sched
);
1210 /* Bind the ct retriever */
1211 RCU_INIT_POINTER(svc
->pe
, pe
);
1214 /* Update the virtual service counters */
1215 if (svc
->port
== FTPPORT
)
1216 atomic_inc(&ipvs
->ftpsvc_counter
);
1217 else if (svc
->port
== 0)
1218 atomic_inc(&ipvs
->nullsvc_counter
);
1220 ip_vs_start_estimator(net
, &svc
->stats
);
1222 /* Count only IPv4 services for old get/setsockopt interface */
1223 if (svc
->af
== AF_INET
)
1224 ipvs
->num_services
++;
1226 /* Hash the service into the service table */
1227 ip_vs_svc_hash(svc
);
1230 /* Now there is a service - full throttle */
1237 ip_vs_unbind_scheduler(svc
, sched
);
1238 ip_vs_service_free(svc
);
1240 ip_vs_scheduler_put(sched
);
1243 /* decrease the module use count */
1244 ip_vs_use_count_dec();
1251 * Edit a service and bind it with a new scheduler
1254 ip_vs_edit_service(struct ip_vs_service
*svc
, struct ip_vs_service_user_kern
*u
)
1256 struct ip_vs_scheduler
*sched
, *old_sched
;
1257 struct ip_vs_pe
*pe
= NULL
, *old_pe
= NULL
;
1261 * Lookup the scheduler, by 'u->sched_name'
1263 sched
= ip_vs_scheduler_get(u
->sched_name
);
1264 if (sched
== NULL
) {
1265 pr_info("Scheduler module ip_vs_%s not found\n", u
->sched_name
);
1270 if (u
->pe_name
&& *u
->pe_name
) {
1271 pe
= ip_vs_pe_getbyname(u
->pe_name
);
1273 pr_info("persistence engine module ip_vs_pe_%s "
1274 "not found\n", u
->pe_name
);
1281 #ifdef CONFIG_IP_VS_IPV6
1282 if (u
->af
== AF_INET6
) {
1283 __u32 plen
= (__force __u32
) u
->netmask
;
1285 if (plen
< 1 || plen
> 128) {
1292 old_sched
= rcu_dereference_protected(svc
->scheduler
, 1);
1293 if (sched
!= old_sched
) {
1294 /* Bind the new scheduler */
1295 ret
= ip_vs_bind_scheduler(svc
, sched
);
1300 /* Unbind the old scheduler on success */
1301 ip_vs_unbind_scheduler(svc
, old_sched
);
1305 * Set the flags and timeout value
1307 svc
->flags
= u
->flags
| IP_VS_SVC_F_HASHED
;
1308 svc
->timeout
= u
->timeout
* HZ
;
1309 svc
->netmask
= u
->netmask
;
1311 old_pe
= rcu_dereference_protected(svc
->pe
, 1);
1313 rcu_assign_pointer(svc
->pe
, pe
);
1316 ip_vs_scheduler_put(old_sched
);
1317 ip_vs_pe_put(old_pe
);
1322 * Delete a service from the service list
1323 * - The service must be unlinked, unlocked and not referenced!
1324 * - We are called under _bh lock
1326 static void __ip_vs_del_service(struct ip_vs_service
*svc
, bool cleanup
)
1328 struct ip_vs_dest
*dest
, *nxt
;
1329 struct ip_vs_scheduler
*old_sched
;
1330 struct ip_vs_pe
*old_pe
;
1331 struct netns_ipvs
*ipvs
= net_ipvs(svc
->net
);
1333 pr_info("%s: enter\n", __func__
);
1335 /* Count only IPv4 services for old get/setsockopt interface */
1336 if (svc
->af
== AF_INET
)
1337 ipvs
->num_services
--;
1339 ip_vs_stop_estimator(svc
->net
, &svc
->stats
);
1341 /* Unbind scheduler */
1342 old_sched
= rcu_dereference_protected(svc
->scheduler
, 1);
1343 ip_vs_unbind_scheduler(svc
, old_sched
);
1344 ip_vs_scheduler_put(old_sched
);
1346 /* Unbind persistence engine, keep svc->pe */
1347 old_pe
= rcu_dereference_protected(svc
->pe
, 1);
1348 ip_vs_pe_put(old_pe
);
1351 * Unlink the whole destination list
1353 list_for_each_entry_safe(dest
, nxt
, &svc
->destinations
, n_list
) {
1354 __ip_vs_unlink_dest(svc
, dest
, 0);
1355 __ip_vs_del_dest(svc
->net
, dest
, cleanup
);
1359 * Update the virtual service counters
1361 if (svc
->port
== FTPPORT
)
1362 atomic_dec(&ipvs
->ftpsvc_counter
);
1363 else if (svc
->port
== 0)
1364 atomic_dec(&ipvs
->nullsvc_counter
);
1367 * Free the service if nobody refers to it
1369 __ip_vs_svc_put(svc
, true);
1371 /* decrease the module use count */
1372 ip_vs_use_count_dec();
1376 * Unlink a service from list and try to delete it if its refcnt reached 0
1378 static void ip_vs_unlink_service(struct ip_vs_service
*svc
, bool cleanup
)
1380 /* Hold svc to avoid double release from dest_trash */
1381 atomic_inc(&svc
->refcnt
);
1383 * Unhash it from the service table
1385 ip_vs_svc_unhash(svc
);
1387 __ip_vs_del_service(svc
, cleanup
);
1391 * Delete a service from the service list
1393 static int ip_vs_del_service(struct ip_vs_service
*svc
)
1397 ip_vs_unlink_service(svc
, false);
1404 * Flush all the virtual services
1406 static int ip_vs_flush(struct net
*net
, bool cleanup
)
1409 struct ip_vs_service
*svc
;
1410 struct hlist_node
*n
;
1413 * Flush the service table hashed by <netns,protocol,addr,port>
1415 for(idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1416 hlist_for_each_entry_safe(svc
, n
, &ip_vs_svc_table
[idx
],
1418 if (net_eq(svc
->net
, net
))
1419 ip_vs_unlink_service(svc
, cleanup
);
1424 * Flush the service table hashed by fwmark
1426 for(idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1427 hlist_for_each_entry_safe(svc
, n
, &ip_vs_svc_fwm_table
[idx
],
1429 if (net_eq(svc
->net
, net
))
1430 ip_vs_unlink_service(svc
, cleanup
);
1438 * Delete service by {netns} in the service table.
1439 * Called by __ip_vs_cleanup()
1441 void ip_vs_service_net_cleanup(struct net
*net
)
1444 /* Check for "full" addressed entries */
1445 mutex_lock(&__ip_vs_mutex
);
1446 ip_vs_flush(net
, true);
1447 mutex_unlock(&__ip_vs_mutex
);
1451 /* Put all references for device (dst_cache) */
1453 ip_vs_forget_dev(struct ip_vs_dest
*dest
, struct net_device
*dev
)
1455 struct ip_vs_dest_dst
*dest_dst
;
1457 spin_lock_bh(&dest
->dst_lock
);
1458 dest_dst
= rcu_dereference_protected(dest
->dest_dst
, 1);
1459 if (dest_dst
&& dest_dst
->dst_cache
->dev
== dev
) {
1460 IP_VS_DBG_BUF(3, "Reset dev:%s dest %s:%u ,dest->refcnt=%d\n",
1462 IP_VS_DBG_ADDR(dest
->af
, &dest
->addr
),
1464 atomic_read(&dest
->refcnt
));
1465 __ip_vs_dst_cache_reset(dest
);
1467 spin_unlock_bh(&dest
->dst_lock
);
1470 /* Netdev event receiver
1471 * Currently only NETDEV_DOWN is handled to release refs to cached dsts
1473 static int ip_vs_dst_event(struct notifier_block
*this, unsigned long event
,
1476 struct net_device
*dev
= netdev_notifier_info_to_dev(ptr
);
1477 struct net
*net
= dev_net(dev
);
1478 struct netns_ipvs
*ipvs
= net_ipvs(net
);
1479 struct ip_vs_service
*svc
;
1480 struct ip_vs_dest
*dest
;
1483 if (event
!= NETDEV_DOWN
|| !ipvs
)
1485 IP_VS_DBG(3, "%s() dev=%s\n", __func__
, dev
->name
);
1487 mutex_lock(&__ip_vs_mutex
);
1488 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1489 hlist_for_each_entry(svc
, &ip_vs_svc_table
[idx
], s_list
) {
1490 if (net_eq(svc
->net
, net
)) {
1491 list_for_each_entry(dest
, &svc
->destinations
,
1493 ip_vs_forget_dev(dest
, dev
);
1498 hlist_for_each_entry(svc
, &ip_vs_svc_fwm_table
[idx
], f_list
) {
1499 if (net_eq(svc
->net
, net
)) {
1500 list_for_each_entry(dest
, &svc
->destinations
,
1502 ip_vs_forget_dev(dest
, dev
);
1509 spin_lock_bh(&ipvs
->dest_trash_lock
);
1510 list_for_each_entry(dest
, &ipvs
->dest_trash
, t_list
) {
1511 ip_vs_forget_dev(dest
, dev
);
1513 spin_unlock_bh(&ipvs
->dest_trash_lock
);
1514 mutex_unlock(&__ip_vs_mutex
);
1520 * Zero counters in a service or all services
1522 static int ip_vs_zero_service(struct ip_vs_service
*svc
)
1524 struct ip_vs_dest
*dest
;
1526 list_for_each_entry(dest
, &svc
->destinations
, n_list
) {
1527 ip_vs_zero_stats(&dest
->stats
);
1529 ip_vs_zero_stats(&svc
->stats
);
1533 static int ip_vs_zero_all(struct net
*net
)
1536 struct ip_vs_service
*svc
;
1538 for(idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1539 hlist_for_each_entry(svc
, &ip_vs_svc_table
[idx
], s_list
) {
1540 if (net_eq(svc
->net
, net
))
1541 ip_vs_zero_service(svc
);
1545 for(idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1546 hlist_for_each_entry(svc
, &ip_vs_svc_fwm_table
[idx
], f_list
) {
1547 if (net_eq(svc
->net
, net
))
1548 ip_vs_zero_service(svc
);
1552 ip_vs_zero_stats(&net_ipvs(net
)->tot_stats
);
1556 #ifdef CONFIG_SYSCTL
1559 static int three
= 3;
1562 proc_do_defense_mode(struct ctl_table
*table
, int write
,
1563 void __user
*buffer
, size_t *lenp
, loff_t
*ppos
)
1565 struct net
*net
= current
->nsproxy
->net_ns
;
1566 int *valp
= table
->data
;
1570 rc
= proc_dointvec(table
, write
, buffer
, lenp
, ppos
);
1571 if (write
&& (*valp
!= val
)) {
1572 if ((*valp
< 0) || (*valp
> 3)) {
1573 /* Restore the correct value */
1576 update_defense_level(net_ipvs(net
));
1583 proc_do_sync_threshold(struct ctl_table
*table
, int write
,
1584 void __user
*buffer
, size_t *lenp
, loff_t
*ppos
)
1586 int *valp
= table
->data
;
1590 /* backup the value first */
1591 memcpy(val
, valp
, sizeof(val
));
1593 rc
= proc_dointvec(table
, write
, buffer
, lenp
, ppos
);
1594 if (write
&& (valp
[0] < 0 || valp
[1] < 0 ||
1595 (valp
[0] >= valp
[1] && valp
[1]))) {
1596 /* Restore the correct value */
1597 memcpy(valp
, val
, sizeof(val
));
1603 proc_do_sync_mode(struct ctl_table
*table
, int write
,
1604 void __user
*buffer
, size_t *lenp
, loff_t
*ppos
)
1606 int *valp
= table
->data
;
1610 rc
= proc_dointvec(table
, write
, buffer
, lenp
, ppos
);
1611 if (write
&& (*valp
!= val
)) {
1612 if ((*valp
< 0) || (*valp
> 1)) {
1613 /* Restore the correct value */
1621 proc_do_sync_ports(struct ctl_table
*table
, int write
,
1622 void __user
*buffer
, size_t *lenp
, loff_t
*ppos
)
1624 int *valp
= table
->data
;
1628 rc
= proc_dointvec(table
, write
, buffer
, lenp
, ppos
);
1629 if (write
&& (*valp
!= val
)) {
1630 if (*valp
< 1 || !is_power_of_2(*valp
)) {
1631 /* Restore the correct value */
1639 * IPVS sysctl table (under the /proc/sys/net/ipv4/vs/)
1640 * Do not change order or insert new entries without
1641 * align with netns init in ip_vs_control_net_init()
1644 static struct ctl_table vs_vars
[] = {
1646 .procname
= "amemthresh",
1647 .maxlen
= sizeof(int),
1649 .proc_handler
= proc_dointvec
,
1652 .procname
= "am_droprate",
1653 .maxlen
= sizeof(int),
1655 .proc_handler
= proc_dointvec
,
1658 .procname
= "drop_entry",
1659 .maxlen
= sizeof(int),
1661 .proc_handler
= proc_do_defense_mode
,
1664 .procname
= "drop_packet",
1665 .maxlen
= sizeof(int),
1667 .proc_handler
= proc_do_defense_mode
,
1669 #ifdef CONFIG_IP_VS_NFCT
1671 .procname
= "conntrack",
1672 .maxlen
= sizeof(int),
1674 .proc_handler
= &proc_dointvec
,
1678 .procname
= "secure_tcp",
1679 .maxlen
= sizeof(int),
1681 .proc_handler
= proc_do_defense_mode
,
1684 .procname
= "snat_reroute",
1685 .maxlen
= sizeof(int),
1687 .proc_handler
= &proc_dointvec
,
1690 .procname
= "sync_version",
1691 .maxlen
= sizeof(int),
1693 .proc_handler
= &proc_do_sync_mode
,
1696 .procname
= "sync_ports",
1697 .maxlen
= sizeof(int),
1699 .proc_handler
= &proc_do_sync_ports
,
1702 .procname
= "sync_persist_mode",
1703 .maxlen
= sizeof(int),
1705 .proc_handler
= proc_dointvec
,
1708 .procname
= "sync_qlen_max",
1709 .maxlen
= sizeof(unsigned long),
1711 .proc_handler
= proc_doulongvec_minmax
,
1714 .procname
= "sync_sock_size",
1715 .maxlen
= sizeof(int),
1717 .proc_handler
= proc_dointvec
,
1720 .procname
= "cache_bypass",
1721 .maxlen
= sizeof(int),
1723 .proc_handler
= proc_dointvec
,
1726 .procname
= "expire_nodest_conn",
1727 .maxlen
= sizeof(int),
1729 .proc_handler
= proc_dointvec
,
1732 .procname
= "sloppy_tcp",
1733 .maxlen
= sizeof(int),
1735 .proc_handler
= proc_dointvec
,
1738 .procname
= "sloppy_sctp",
1739 .maxlen
= sizeof(int),
1741 .proc_handler
= proc_dointvec
,
1744 .procname
= "expire_quiescent_template",
1745 .maxlen
= sizeof(int),
1747 .proc_handler
= proc_dointvec
,
1750 .procname
= "sync_threshold",
1752 sizeof(((struct netns_ipvs
*)0)->sysctl_sync_threshold
),
1754 .proc_handler
= proc_do_sync_threshold
,
1757 .procname
= "sync_refresh_period",
1758 .maxlen
= sizeof(int),
1760 .proc_handler
= proc_dointvec_jiffies
,
1763 .procname
= "sync_retries",
1764 .maxlen
= sizeof(int),
1766 .proc_handler
= proc_dointvec_minmax
,
1771 .procname
= "nat_icmp_send",
1772 .maxlen
= sizeof(int),
1774 .proc_handler
= proc_dointvec
,
1777 .procname
= "pmtu_disc",
1778 .maxlen
= sizeof(int),
1780 .proc_handler
= proc_dointvec
,
1783 .procname
= "backup_only",
1784 .maxlen
= sizeof(int),
1786 .proc_handler
= proc_dointvec
,
1788 #ifdef CONFIG_IP_VS_DEBUG
1790 .procname
= "debug_level",
1791 .data
= &sysctl_ip_vs_debug_level
,
1792 .maxlen
= sizeof(int),
1794 .proc_handler
= proc_dointvec
,
1799 .procname
= "timeout_established",
1800 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_ESTABLISHED
],
1801 .maxlen
= sizeof(int),
1803 .proc_handler
= proc_dointvec_jiffies
,
1806 .procname
= "timeout_synsent",
1807 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_SYN_SENT
],
1808 .maxlen
= sizeof(int),
1810 .proc_handler
= proc_dointvec_jiffies
,
1813 .procname
= "timeout_synrecv",
1814 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_SYN_RECV
],
1815 .maxlen
= sizeof(int),
1817 .proc_handler
= proc_dointvec_jiffies
,
1820 .procname
= "timeout_finwait",
1821 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_FIN_WAIT
],
1822 .maxlen
= sizeof(int),
1824 .proc_handler
= proc_dointvec_jiffies
,
1827 .procname
= "timeout_timewait",
1828 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_TIME_WAIT
],
1829 .maxlen
= sizeof(int),
1831 .proc_handler
= proc_dointvec_jiffies
,
1834 .procname
= "timeout_close",
1835 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_CLOSE
],
1836 .maxlen
= sizeof(int),
1838 .proc_handler
= proc_dointvec_jiffies
,
1841 .procname
= "timeout_closewait",
1842 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_CLOSE_WAIT
],
1843 .maxlen
= sizeof(int),
1845 .proc_handler
= proc_dointvec_jiffies
,
1848 .procname
= "timeout_lastack",
1849 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_LAST_ACK
],
1850 .maxlen
= sizeof(int),
1852 .proc_handler
= proc_dointvec_jiffies
,
1855 .procname
= "timeout_listen",
1856 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_LISTEN
],
1857 .maxlen
= sizeof(int),
1859 .proc_handler
= proc_dointvec_jiffies
,
1862 .procname
= "timeout_synack",
1863 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_SYNACK
],
1864 .maxlen
= sizeof(int),
1866 .proc_handler
= proc_dointvec_jiffies
,
1869 .procname
= "timeout_udp",
1870 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_UDP
],
1871 .maxlen
= sizeof(int),
1873 .proc_handler
= proc_dointvec_jiffies
,
1876 .procname
= "timeout_icmp",
1877 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_ICMP
],
1878 .maxlen
= sizeof(int),
1880 .proc_handler
= proc_dointvec_jiffies
,
1888 #ifdef CONFIG_PROC_FS
1891 struct seq_net_private p
; /* Do not move this, netns depends upon it*/
1892 struct hlist_head
*table
;
1897 * Write the contents of the VS rule table to a PROCfs file.
1898 * (It is kept just for backward compatibility)
1900 static inline const char *ip_vs_fwd_name(unsigned int flags
)
1902 switch (flags
& IP_VS_CONN_F_FWD_MASK
) {
1903 case IP_VS_CONN_F_LOCALNODE
:
1905 case IP_VS_CONN_F_TUNNEL
:
1907 case IP_VS_CONN_F_DROUTE
:
1915 /* Get the Nth entry in the two lists */
1916 static struct ip_vs_service
*ip_vs_info_array(struct seq_file
*seq
, loff_t pos
)
1918 struct net
*net
= seq_file_net(seq
);
1919 struct ip_vs_iter
*iter
= seq
->private;
1921 struct ip_vs_service
*svc
;
1923 /* look in hash by protocol */
1924 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1925 hlist_for_each_entry_rcu(svc
, &ip_vs_svc_table
[idx
], s_list
) {
1926 if (net_eq(svc
->net
, net
) && pos
-- == 0) {
1927 iter
->table
= ip_vs_svc_table
;
1934 /* keep looking in fwmark */
1935 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1936 hlist_for_each_entry_rcu(svc
, &ip_vs_svc_fwm_table
[idx
],
1938 if (net_eq(svc
->net
, net
) && pos
-- == 0) {
1939 iter
->table
= ip_vs_svc_fwm_table
;
1949 static void *ip_vs_info_seq_start(struct seq_file
*seq
, loff_t
*pos
)
1953 return *pos
? ip_vs_info_array(seq
, *pos
- 1) : SEQ_START_TOKEN
;
1957 static void *ip_vs_info_seq_next(struct seq_file
*seq
, void *v
, loff_t
*pos
)
1959 struct hlist_node
*e
;
1960 struct ip_vs_iter
*iter
;
1961 struct ip_vs_service
*svc
;
1964 if (v
== SEQ_START_TOKEN
)
1965 return ip_vs_info_array(seq
,0);
1968 iter
= seq
->private;
1970 if (iter
->table
== ip_vs_svc_table
) {
1971 /* next service in table hashed by protocol */
1972 e
= rcu_dereference(hlist_next_rcu(&svc
->s_list
));
1974 return hlist_entry(e
, struct ip_vs_service
, s_list
);
1976 while (++iter
->bucket
< IP_VS_SVC_TAB_SIZE
) {
1977 hlist_for_each_entry_rcu(svc
,
1978 &ip_vs_svc_table
[iter
->bucket
],
1984 iter
->table
= ip_vs_svc_fwm_table
;
1989 /* next service in hashed by fwmark */
1990 e
= rcu_dereference(hlist_next_rcu(&svc
->f_list
));
1992 return hlist_entry(e
, struct ip_vs_service
, f_list
);
1995 while (++iter
->bucket
< IP_VS_SVC_TAB_SIZE
) {
1996 hlist_for_each_entry_rcu(svc
,
1997 &ip_vs_svc_fwm_table
[iter
->bucket
],
2005 static void ip_vs_info_seq_stop(struct seq_file
*seq
, void *v
)
2012 static int ip_vs_info_seq_show(struct seq_file
*seq
, void *v
)
2014 if (v
== SEQ_START_TOKEN
) {
2016 "IP Virtual Server version %d.%d.%d (size=%d)\n",
2017 NVERSION(IP_VS_VERSION_CODE
), ip_vs_conn_tab_size
);
2019 "Prot LocalAddress:Port Scheduler Flags\n");
2021 " -> RemoteAddress:Port Forward Weight ActiveConn InActConn\n");
2023 const struct ip_vs_service
*svc
= v
;
2024 const struct ip_vs_iter
*iter
= seq
->private;
2025 const struct ip_vs_dest
*dest
;
2026 struct ip_vs_scheduler
*sched
= rcu_dereference(svc
->scheduler
);
2028 if (iter
->table
== ip_vs_svc_table
) {
2029 #ifdef CONFIG_IP_VS_IPV6
2030 if (svc
->af
== AF_INET6
)
2031 seq_printf(seq
, "%s [%pI6]:%04X %s ",
2032 ip_vs_proto_name(svc
->protocol
),
2038 seq_printf(seq
, "%s %08X:%04X %s %s ",
2039 ip_vs_proto_name(svc
->protocol
),
2040 ntohl(svc
->addr
.ip
),
2043 (svc
->flags
& IP_VS_SVC_F_ONEPACKET
)?"ops ":"");
2045 seq_printf(seq
, "FWM %08X %s %s",
2046 svc
->fwmark
, sched
->name
,
2047 (svc
->flags
& IP_VS_SVC_F_ONEPACKET
)?"ops ":"");
2050 if (svc
->flags
& IP_VS_SVC_F_PERSISTENT
)
2051 seq_printf(seq
, "persistent %d %08X\n",
2053 ntohl(svc
->netmask
));
2055 seq_putc(seq
, '\n');
2057 list_for_each_entry_rcu(dest
, &svc
->destinations
, n_list
) {
2058 #ifdef CONFIG_IP_VS_IPV6
2059 if (dest
->af
== AF_INET6
)
2062 " %-7s %-6d %-10d %-10d\n",
2065 ip_vs_fwd_name(atomic_read(&dest
->conn_flags
)),
2066 atomic_read(&dest
->weight
),
2067 atomic_read(&dest
->activeconns
),
2068 atomic_read(&dest
->inactconns
));
2073 "%-7s %-6d %-10d %-10d\n",
2074 ntohl(dest
->addr
.ip
),
2076 ip_vs_fwd_name(atomic_read(&dest
->conn_flags
)),
2077 atomic_read(&dest
->weight
),
2078 atomic_read(&dest
->activeconns
),
2079 atomic_read(&dest
->inactconns
));
2086 static const struct seq_operations ip_vs_info_seq_ops
= {
2087 .start
= ip_vs_info_seq_start
,
2088 .next
= ip_vs_info_seq_next
,
2089 .stop
= ip_vs_info_seq_stop
,
2090 .show
= ip_vs_info_seq_show
,
2093 static int ip_vs_info_open(struct inode
*inode
, struct file
*file
)
2095 return seq_open_net(inode
, file
, &ip_vs_info_seq_ops
,
2096 sizeof(struct ip_vs_iter
));
2099 static const struct file_operations ip_vs_info_fops
= {
2100 .owner
= THIS_MODULE
,
2101 .open
= ip_vs_info_open
,
2103 .llseek
= seq_lseek
,
2104 .release
= seq_release_net
,
2107 static int ip_vs_stats_show(struct seq_file
*seq
, void *v
)
2109 struct net
*net
= seq_file_single_net(seq
);
2110 struct ip_vs_stats_user show
;
2112 /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */
2114 " Total Incoming Outgoing Incoming Outgoing\n");
2116 " Conns Packets Packets Bytes Bytes\n");
2118 ip_vs_copy_stats(&show
, &net_ipvs(net
)->tot_stats
);
2119 seq_printf(seq
, "%8X %8X %8X %16LX %16LX\n\n", show
.conns
,
2120 show
.inpkts
, show
.outpkts
,
2121 (unsigned long long) show
.inbytes
,
2122 (unsigned long long) show
.outbytes
);
2124 /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */
2126 " Conns/s Pkts/s Pkts/s Bytes/s Bytes/s\n");
2127 seq_printf(seq
, "%8X %8X %8X %16X %16X\n",
2128 show
.cps
, show
.inpps
, show
.outpps
,
2129 show
.inbps
, show
.outbps
);
2134 static int ip_vs_stats_seq_open(struct inode
*inode
, struct file
*file
)
2136 return single_open_net(inode
, file
, ip_vs_stats_show
);
2139 static const struct file_operations ip_vs_stats_fops
= {
2140 .owner
= THIS_MODULE
,
2141 .open
= ip_vs_stats_seq_open
,
2143 .llseek
= seq_lseek
,
2144 .release
= single_release_net
,
2147 static int ip_vs_stats_percpu_show(struct seq_file
*seq
, void *v
)
2149 struct net
*net
= seq_file_single_net(seq
);
2150 struct ip_vs_stats
*tot_stats
= &net_ipvs(net
)->tot_stats
;
2151 struct ip_vs_cpu_stats __percpu
*cpustats
= tot_stats
->cpustats
;
2152 struct ip_vs_stats_user rates
;
2155 /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */
2157 " Total Incoming Outgoing Incoming Outgoing\n");
2159 "CPU Conns Packets Packets Bytes Bytes\n");
2161 for_each_possible_cpu(i
) {
2162 struct ip_vs_cpu_stats
*u
= per_cpu_ptr(cpustats
, i
);
2164 __u64 inbytes
, outbytes
;
2167 start
= u64_stats_fetch_begin_bh(&u
->syncp
);
2168 inbytes
= u
->ustats
.inbytes
;
2169 outbytes
= u
->ustats
.outbytes
;
2170 } while (u64_stats_fetch_retry_bh(&u
->syncp
, start
));
2172 seq_printf(seq
, "%3X %8X %8X %8X %16LX %16LX\n",
2173 i
, u
->ustats
.conns
, u
->ustats
.inpkts
,
2174 u
->ustats
.outpkts
, (__u64
)inbytes
,
2178 spin_lock_bh(&tot_stats
->lock
);
2180 seq_printf(seq
, " ~ %8X %8X %8X %16LX %16LX\n\n",
2181 tot_stats
->ustats
.conns
, tot_stats
->ustats
.inpkts
,
2182 tot_stats
->ustats
.outpkts
,
2183 (unsigned long long) tot_stats
->ustats
.inbytes
,
2184 (unsigned long long) tot_stats
->ustats
.outbytes
);
2186 ip_vs_read_estimator(&rates
, tot_stats
);
2188 spin_unlock_bh(&tot_stats
->lock
);
2190 /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */
2192 " Conns/s Pkts/s Pkts/s Bytes/s Bytes/s\n");
2193 seq_printf(seq
, " %8X %8X %8X %16X %16X\n",
2203 static int ip_vs_stats_percpu_seq_open(struct inode
*inode
, struct file
*file
)
2205 return single_open_net(inode
, file
, ip_vs_stats_percpu_show
);
2208 static const struct file_operations ip_vs_stats_percpu_fops
= {
2209 .owner
= THIS_MODULE
,
2210 .open
= ip_vs_stats_percpu_seq_open
,
2212 .llseek
= seq_lseek
,
2213 .release
= single_release_net
,
2218 * Set timeout values for tcp tcpfin udp in the timeout_table.
2220 static int ip_vs_set_timeout(struct net
*net
, struct ip_vs_timeout_user
*u
)
2222 #if defined(CONFIG_IP_VS_PROTO_TCP) || defined(CONFIG_IP_VS_PROTO_UDP)
2223 struct ip_vs_proto_data
*pd
;
2226 IP_VS_DBG(2, "Setting timeout tcp:%d tcpfin:%d udp:%d\n",
2231 #ifdef CONFIG_IP_VS_PROTO_TCP
2232 if (u
->tcp_timeout
) {
2233 pd
= ip_vs_proto_data_get(net
, IPPROTO_TCP
);
2234 pd
->timeout_table
[IP_VS_TCP_S_ESTABLISHED
]
2235 = u
->tcp_timeout
* HZ
;
2238 if (u
->tcp_fin_timeout
) {
2239 pd
= ip_vs_proto_data_get(net
, IPPROTO_TCP
);
2240 pd
->timeout_table
[IP_VS_TCP_S_FIN_WAIT
]
2241 = u
->tcp_fin_timeout
* HZ
;
2245 #ifdef CONFIG_IP_VS_PROTO_UDP
2246 if (u
->udp_timeout
) {
2247 pd
= ip_vs_proto_data_get(net
, IPPROTO_UDP
);
2248 pd
->timeout_table
[IP_VS_UDP_S_NORMAL
]
2249 = u
->udp_timeout
* HZ
;
2256 #define SET_CMDID(cmd) (cmd - IP_VS_BASE_CTL)
2257 #define SERVICE_ARG_LEN (sizeof(struct ip_vs_service_user))
2258 #define SVCDEST_ARG_LEN (sizeof(struct ip_vs_service_user) + \
2259 sizeof(struct ip_vs_dest_user))
2260 #define TIMEOUT_ARG_LEN (sizeof(struct ip_vs_timeout_user))
2261 #define DAEMON_ARG_LEN (sizeof(struct ip_vs_daemon_user))
2262 #define MAX_ARG_LEN SVCDEST_ARG_LEN
2264 static const unsigned char set_arglen
[SET_CMDID(IP_VS_SO_SET_MAX
)+1] = {
2265 [SET_CMDID(IP_VS_SO_SET_ADD
)] = SERVICE_ARG_LEN
,
2266 [SET_CMDID(IP_VS_SO_SET_EDIT
)] = SERVICE_ARG_LEN
,
2267 [SET_CMDID(IP_VS_SO_SET_DEL
)] = SERVICE_ARG_LEN
,
2268 [SET_CMDID(IP_VS_SO_SET_FLUSH
)] = 0,
2269 [SET_CMDID(IP_VS_SO_SET_ADDDEST
)] = SVCDEST_ARG_LEN
,
2270 [SET_CMDID(IP_VS_SO_SET_DELDEST
)] = SVCDEST_ARG_LEN
,
2271 [SET_CMDID(IP_VS_SO_SET_EDITDEST
)] = SVCDEST_ARG_LEN
,
2272 [SET_CMDID(IP_VS_SO_SET_TIMEOUT
)] = TIMEOUT_ARG_LEN
,
2273 [SET_CMDID(IP_VS_SO_SET_STARTDAEMON
)] = DAEMON_ARG_LEN
,
2274 [SET_CMDID(IP_VS_SO_SET_STOPDAEMON
)] = DAEMON_ARG_LEN
,
2275 [SET_CMDID(IP_VS_SO_SET_ZERO
)] = SERVICE_ARG_LEN
,
2278 static void ip_vs_copy_usvc_compat(struct ip_vs_service_user_kern
*usvc
,
2279 struct ip_vs_service_user
*usvc_compat
)
2281 memset(usvc
, 0, sizeof(*usvc
));
2284 usvc
->protocol
= usvc_compat
->protocol
;
2285 usvc
->addr
.ip
= usvc_compat
->addr
;
2286 usvc
->port
= usvc_compat
->port
;
2287 usvc
->fwmark
= usvc_compat
->fwmark
;
2289 /* Deep copy of sched_name is not needed here */
2290 usvc
->sched_name
= usvc_compat
->sched_name
;
2292 usvc
->flags
= usvc_compat
->flags
;
2293 usvc
->timeout
= usvc_compat
->timeout
;
2294 usvc
->netmask
= usvc_compat
->netmask
;
2297 static void ip_vs_copy_udest_compat(struct ip_vs_dest_user_kern
*udest
,
2298 struct ip_vs_dest_user
*udest_compat
)
2300 memset(udest
, 0, sizeof(*udest
));
2302 udest
->addr
.ip
= udest_compat
->addr
;
2303 udest
->port
= udest_compat
->port
;
2304 udest
->conn_flags
= udest_compat
->conn_flags
;
2305 udest
->weight
= udest_compat
->weight
;
2306 udest
->u_threshold
= udest_compat
->u_threshold
;
2307 udest
->l_threshold
= udest_compat
->l_threshold
;
2311 do_ip_vs_set_ctl(struct sock
*sk
, int cmd
, void __user
*user
, unsigned int len
)
2313 struct net
*net
= sock_net(sk
);
2315 unsigned char arg
[MAX_ARG_LEN
];
2316 struct ip_vs_service_user
*usvc_compat
;
2317 struct ip_vs_service_user_kern usvc
;
2318 struct ip_vs_service
*svc
;
2319 struct ip_vs_dest_user
*udest_compat
;
2320 struct ip_vs_dest_user_kern udest
;
2321 struct netns_ipvs
*ipvs
= net_ipvs(net
);
2323 if (!ns_capable(sock_net(sk
)->user_ns
, CAP_NET_ADMIN
))
2326 if (cmd
< IP_VS_BASE_CTL
|| cmd
> IP_VS_SO_SET_MAX
)
2328 if (len
< 0 || len
> MAX_ARG_LEN
)
2330 if (len
!= set_arglen
[SET_CMDID(cmd
)]) {
2331 pr_err("set_ctl: len %u != %u\n",
2332 len
, set_arglen
[SET_CMDID(cmd
)]);
2336 if (copy_from_user(arg
, user
, len
) != 0)
2339 /* increase the module use count */
2340 ip_vs_use_count_inc();
2342 /* Handle daemons since they have another lock */
2343 if (cmd
== IP_VS_SO_SET_STARTDAEMON
||
2344 cmd
== IP_VS_SO_SET_STOPDAEMON
) {
2345 struct ip_vs_daemon_user
*dm
= (struct ip_vs_daemon_user
*)arg
;
2347 if (mutex_lock_interruptible(&ipvs
->sync_mutex
)) {
2351 if (cmd
== IP_VS_SO_SET_STARTDAEMON
)
2352 ret
= start_sync_thread(net
, dm
->state
, dm
->mcast_ifn
,
2355 ret
= stop_sync_thread(net
, dm
->state
);
2356 mutex_unlock(&ipvs
->sync_mutex
);
2360 if (mutex_lock_interruptible(&__ip_vs_mutex
)) {
2365 if (cmd
== IP_VS_SO_SET_FLUSH
) {
2366 /* Flush the virtual service */
2367 ret
= ip_vs_flush(net
, false);
2369 } else if (cmd
== IP_VS_SO_SET_TIMEOUT
) {
2370 /* Set timeout values for (tcp tcpfin udp) */
2371 ret
= ip_vs_set_timeout(net
, (struct ip_vs_timeout_user
*)arg
);
2375 usvc_compat
= (struct ip_vs_service_user
*)arg
;
2376 udest_compat
= (struct ip_vs_dest_user
*)(usvc_compat
+ 1);
2378 /* We only use the new structs internally, so copy userspace compat
2379 * structs to extended internal versions */
2380 ip_vs_copy_usvc_compat(&usvc
, usvc_compat
);
2381 ip_vs_copy_udest_compat(&udest
, udest_compat
);
2383 if (cmd
== IP_VS_SO_SET_ZERO
) {
2384 /* if no service address is set, zero counters in all */
2385 if (!usvc
.fwmark
&& !usvc
.addr
.ip
&& !usvc
.port
) {
2386 ret
= ip_vs_zero_all(net
);
2391 /* Check for valid protocol: TCP or UDP or SCTP, even for fwmark!=0 */
2392 if (usvc
.protocol
!= IPPROTO_TCP
&& usvc
.protocol
!= IPPROTO_UDP
&&
2393 usvc
.protocol
!= IPPROTO_SCTP
) {
2394 pr_err("set_ctl: invalid protocol: %d %pI4:%d %s\n",
2395 usvc
.protocol
, &usvc
.addr
.ip
,
2396 ntohs(usvc
.port
), usvc
.sched_name
);
2401 /* Lookup the exact service by <protocol, addr, port> or fwmark */
2403 if (usvc
.fwmark
== 0)
2404 svc
= __ip_vs_service_find(net
, usvc
.af
, usvc
.protocol
,
2405 &usvc
.addr
, usvc
.port
);
2407 svc
= __ip_vs_svc_fwm_find(net
, usvc
.af
, usvc
.fwmark
);
2410 if (cmd
!= IP_VS_SO_SET_ADD
2411 && (svc
== NULL
|| svc
->protocol
!= usvc
.protocol
)) {
2417 case IP_VS_SO_SET_ADD
:
2421 ret
= ip_vs_add_service(net
, &usvc
, &svc
);
2423 case IP_VS_SO_SET_EDIT
:
2424 ret
= ip_vs_edit_service(svc
, &usvc
);
2426 case IP_VS_SO_SET_DEL
:
2427 ret
= ip_vs_del_service(svc
);
2431 case IP_VS_SO_SET_ZERO
:
2432 ret
= ip_vs_zero_service(svc
);
2434 case IP_VS_SO_SET_ADDDEST
:
2435 ret
= ip_vs_add_dest(svc
, &udest
);
2437 case IP_VS_SO_SET_EDITDEST
:
2438 ret
= ip_vs_edit_dest(svc
, &udest
);
2440 case IP_VS_SO_SET_DELDEST
:
2441 ret
= ip_vs_del_dest(svc
, &udest
);
2448 mutex_unlock(&__ip_vs_mutex
);
2450 /* decrease the module use count */
2451 ip_vs_use_count_dec();
2458 ip_vs_copy_service(struct ip_vs_service_entry
*dst
, struct ip_vs_service
*src
)
2460 struct ip_vs_scheduler
*sched
;
2462 sched
= rcu_dereference_protected(src
->scheduler
, 1);
2463 dst
->protocol
= src
->protocol
;
2464 dst
->addr
= src
->addr
.ip
;
2465 dst
->port
= src
->port
;
2466 dst
->fwmark
= src
->fwmark
;
2467 strlcpy(dst
->sched_name
, sched
->name
, sizeof(dst
->sched_name
));
2468 dst
->flags
= src
->flags
;
2469 dst
->timeout
= src
->timeout
/ HZ
;
2470 dst
->netmask
= src
->netmask
;
2471 dst
->num_dests
= src
->num_dests
;
2472 ip_vs_copy_stats(&dst
->stats
, &src
->stats
);
2476 __ip_vs_get_service_entries(struct net
*net
,
2477 const struct ip_vs_get_services
*get
,
2478 struct ip_vs_get_services __user
*uptr
)
2481 struct ip_vs_service
*svc
;
2482 struct ip_vs_service_entry entry
;
2485 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
2486 hlist_for_each_entry(svc
, &ip_vs_svc_table
[idx
], s_list
) {
2487 /* Only expose IPv4 entries to old interface */
2488 if (svc
->af
!= AF_INET
|| !net_eq(svc
->net
, net
))
2491 if (count
>= get
->num_services
)
2493 memset(&entry
, 0, sizeof(entry
));
2494 ip_vs_copy_service(&entry
, svc
);
2495 if (copy_to_user(&uptr
->entrytable
[count
],
2496 &entry
, sizeof(entry
))) {
2504 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
2505 hlist_for_each_entry(svc
, &ip_vs_svc_fwm_table
[idx
], f_list
) {
2506 /* Only expose IPv4 entries to old interface */
2507 if (svc
->af
!= AF_INET
|| !net_eq(svc
->net
, net
))
2510 if (count
>= get
->num_services
)
2512 memset(&entry
, 0, sizeof(entry
));
2513 ip_vs_copy_service(&entry
, svc
);
2514 if (copy_to_user(&uptr
->entrytable
[count
],
2515 &entry
, sizeof(entry
))) {
2527 __ip_vs_get_dest_entries(struct net
*net
, const struct ip_vs_get_dests
*get
,
2528 struct ip_vs_get_dests __user
*uptr
)
2530 struct ip_vs_service
*svc
;
2531 union nf_inet_addr addr
= { .ip
= get
->addr
};
2536 svc
= __ip_vs_svc_fwm_find(net
, AF_INET
, get
->fwmark
);
2538 svc
= __ip_vs_service_find(net
, AF_INET
, get
->protocol
, &addr
,
2544 struct ip_vs_dest
*dest
;
2545 struct ip_vs_dest_entry entry
;
2547 memset(&entry
, 0, sizeof(entry
));
2548 list_for_each_entry(dest
, &svc
->destinations
, n_list
) {
2549 if (count
>= get
->num_dests
)
2552 entry
.addr
= dest
->addr
.ip
;
2553 entry
.port
= dest
->port
;
2554 entry
.conn_flags
= atomic_read(&dest
->conn_flags
);
2555 entry
.weight
= atomic_read(&dest
->weight
);
2556 entry
.u_threshold
= dest
->u_threshold
;
2557 entry
.l_threshold
= dest
->l_threshold
;
2558 entry
.activeconns
= atomic_read(&dest
->activeconns
);
2559 entry
.inactconns
= atomic_read(&dest
->inactconns
);
2560 entry
.persistconns
= atomic_read(&dest
->persistconns
);
2561 ip_vs_copy_stats(&entry
.stats
, &dest
->stats
);
2562 if (copy_to_user(&uptr
->entrytable
[count
],
2563 &entry
, sizeof(entry
))) {
2575 __ip_vs_get_timeouts(struct net
*net
, struct ip_vs_timeout_user
*u
)
2577 #if defined(CONFIG_IP_VS_PROTO_TCP) || defined(CONFIG_IP_VS_PROTO_UDP)
2578 struct ip_vs_proto_data
*pd
;
2581 memset(u
, 0, sizeof (*u
));
2583 #ifdef CONFIG_IP_VS_PROTO_TCP
2584 pd
= ip_vs_proto_data_get(net
, IPPROTO_TCP
);
2585 u
->tcp_timeout
= pd
->timeout_table
[IP_VS_TCP_S_ESTABLISHED
] / HZ
;
2586 u
->tcp_fin_timeout
= pd
->timeout_table
[IP_VS_TCP_S_FIN_WAIT
] / HZ
;
2588 #ifdef CONFIG_IP_VS_PROTO_UDP
2589 pd
= ip_vs_proto_data_get(net
, IPPROTO_UDP
);
2591 pd
->timeout_table
[IP_VS_UDP_S_NORMAL
] / HZ
;
2596 #define GET_CMDID(cmd) (cmd - IP_VS_BASE_CTL)
2597 #define GET_INFO_ARG_LEN (sizeof(struct ip_vs_getinfo))
2598 #define GET_SERVICES_ARG_LEN (sizeof(struct ip_vs_get_services))
2599 #define GET_SERVICE_ARG_LEN (sizeof(struct ip_vs_service_entry))
2600 #define GET_DESTS_ARG_LEN (sizeof(struct ip_vs_get_dests))
2601 #define GET_TIMEOUT_ARG_LEN (sizeof(struct ip_vs_timeout_user))
2602 #define GET_DAEMON_ARG_LEN (sizeof(struct ip_vs_daemon_user) * 2)
2604 static const unsigned char get_arglen
[GET_CMDID(IP_VS_SO_GET_MAX
)+1] = {
2605 [GET_CMDID(IP_VS_SO_GET_VERSION
)] = 64,
2606 [GET_CMDID(IP_VS_SO_GET_INFO
)] = GET_INFO_ARG_LEN
,
2607 [GET_CMDID(IP_VS_SO_GET_SERVICES
)] = GET_SERVICES_ARG_LEN
,
2608 [GET_CMDID(IP_VS_SO_GET_SERVICE
)] = GET_SERVICE_ARG_LEN
,
2609 [GET_CMDID(IP_VS_SO_GET_DESTS
)] = GET_DESTS_ARG_LEN
,
2610 [GET_CMDID(IP_VS_SO_GET_TIMEOUT
)] = GET_TIMEOUT_ARG_LEN
,
2611 [GET_CMDID(IP_VS_SO_GET_DAEMON
)] = GET_DAEMON_ARG_LEN
,
2615 do_ip_vs_get_ctl(struct sock
*sk
, int cmd
, void __user
*user
, int *len
)
2617 unsigned char arg
[128];
2619 unsigned int copylen
;
2620 struct net
*net
= sock_net(sk
);
2621 struct netns_ipvs
*ipvs
= net_ipvs(net
);
2624 if (!ns_capable(sock_net(sk
)->user_ns
, CAP_NET_ADMIN
))
2627 if (cmd
< IP_VS_BASE_CTL
|| cmd
> IP_VS_SO_GET_MAX
)
2630 if (*len
< get_arglen
[GET_CMDID(cmd
)]) {
2631 pr_err("get_ctl: len %u < %u\n",
2632 *len
, get_arglen
[GET_CMDID(cmd
)]);
2636 copylen
= get_arglen
[GET_CMDID(cmd
)];
2640 if (copy_from_user(arg
, user
, copylen
) != 0)
2643 * Handle daemons first since it has its own locking
2645 if (cmd
== IP_VS_SO_GET_DAEMON
) {
2646 struct ip_vs_daemon_user d
[2];
2648 memset(&d
, 0, sizeof(d
));
2649 if (mutex_lock_interruptible(&ipvs
->sync_mutex
))
2650 return -ERESTARTSYS
;
2652 if (ipvs
->sync_state
& IP_VS_STATE_MASTER
) {
2653 d
[0].state
= IP_VS_STATE_MASTER
;
2654 strlcpy(d
[0].mcast_ifn
, ipvs
->master_mcast_ifn
,
2655 sizeof(d
[0].mcast_ifn
));
2656 d
[0].syncid
= ipvs
->master_syncid
;
2658 if (ipvs
->sync_state
& IP_VS_STATE_BACKUP
) {
2659 d
[1].state
= IP_VS_STATE_BACKUP
;
2660 strlcpy(d
[1].mcast_ifn
, ipvs
->backup_mcast_ifn
,
2661 sizeof(d
[1].mcast_ifn
));
2662 d
[1].syncid
= ipvs
->backup_syncid
;
2664 if (copy_to_user(user
, &d
, sizeof(d
)) != 0)
2666 mutex_unlock(&ipvs
->sync_mutex
);
2670 if (mutex_lock_interruptible(&__ip_vs_mutex
))
2671 return -ERESTARTSYS
;
2674 case IP_VS_SO_GET_VERSION
:
2678 sprintf(buf
, "IP Virtual Server version %d.%d.%d (size=%d)",
2679 NVERSION(IP_VS_VERSION_CODE
), ip_vs_conn_tab_size
);
2680 if (copy_to_user(user
, buf
, strlen(buf
)+1) != 0) {
2684 *len
= strlen(buf
)+1;
2688 case IP_VS_SO_GET_INFO
:
2690 struct ip_vs_getinfo info
;
2691 info
.version
= IP_VS_VERSION_CODE
;
2692 info
.size
= ip_vs_conn_tab_size
;
2693 info
.num_services
= ipvs
->num_services
;
2694 if (copy_to_user(user
, &info
, sizeof(info
)) != 0)
2699 case IP_VS_SO_GET_SERVICES
:
2701 struct ip_vs_get_services
*get
;
2704 get
= (struct ip_vs_get_services
*)arg
;
2705 size
= sizeof(*get
) +
2706 sizeof(struct ip_vs_service_entry
) * get
->num_services
;
2708 pr_err("length: %u != %u\n", *len
, size
);
2712 ret
= __ip_vs_get_service_entries(net
, get
, user
);
2716 case IP_VS_SO_GET_SERVICE
:
2718 struct ip_vs_service_entry
*entry
;
2719 struct ip_vs_service
*svc
;
2720 union nf_inet_addr addr
;
2722 entry
= (struct ip_vs_service_entry
*)arg
;
2723 addr
.ip
= entry
->addr
;
2726 svc
= __ip_vs_svc_fwm_find(net
, AF_INET
, entry
->fwmark
);
2728 svc
= __ip_vs_service_find(net
, AF_INET
,
2729 entry
->protocol
, &addr
,
2733 ip_vs_copy_service(entry
, svc
);
2734 if (copy_to_user(user
, entry
, sizeof(*entry
)) != 0)
2741 case IP_VS_SO_GET_DESTS
:
2743 struct ip_vs_get_dests
*get
;
2746 get
= (struct ip_vs_get_dests
*)arg
;
2747 size
= sizeof(*get
) +
2748 sizeof(struct ip_vs_dest_entry
) * get
->num_dests
;
2750 pr_err("length: %u != %u\n", *len
, size
);
2754 ret
= __ip_vs_get_dest_entries(net
, get
, user
);
2758 case IP_VS_SO_GET_TIMEOUT
:
2760 struct ip_vs_timeout_user t
;
2762 __ip_vs_get_timeouts(net
, &t
);
2763 if (copy_to_user(user
, &t
, sizeof(t
)) != 0)
2773 mutex_unlock(&__ip_vs_mutex
);
2778 static struct nf_sockopt_ops ip_vs_sockopts
= {
2780 .set_optmin
= IP_VS_BASE_CTL
,
2781 .set_optmax
= IP_VS_SO_SET_MAX
+1,
2782 .set
= do_ip_vs_set_ctl
,
2783 .get_optmin
= IP_VS_BASE_CTL
,
2784 .get_optmax
= IP_VS_SO_GET_MAX
+1,
2785 .get
= do_ip_vs_get_ctl
,
2786 .owner
= THIS_MODULE
,
2790 * Generic Netlink interface
2793 /* IPVS genetlink family */
2794 static struct genl_family ip_vs_genl_family
= {
2795 .id
= GENL_ID_GENERATE
,
2797 .name
= IPVS_GENL_NAME
,
2798 .version
= IPVS_GENL_VERSION
,
2799 .maxattr
= IPVS_CMD_MAX
,
2800 .netnsok
= true, /* Make ipvsadm to work on netns */
2803 /* Policy used for first-level command attributes */
2804 static const struct nla_policy ip_vs_cmd_policy
[IPVS_CMD_ATTR_MAX
+ 1] = {
2805 [IPVS_CMD_ATTR_SERVICE
] = { .type
= NLA_NESTED
},
2806 [IPVS_CMD_ATTR_DEST
] = { .type
= NLA_NESTED
},
2807 [IPVS_CMD_ATTR_DAEMON
] = { .type
= NLA_NESTED
},
2808 [IPVS_CMD_ATTR_TIMEOUT_TCP
] = { .type
= NLA_U32
},
2809 [IPVS_CMD_ATTR_TIMEOUT_TCP_FIN
] = { .type
= NLA_U32
},
2810 [IPVS_CMD_ATTR_TIMEOUT_UDP
] = { .type
= NLA_U32
},
2813 /* Policy used for attributes in nested attribute IPVS_CMD_ATTR_DAEMON */
2814 static const struct nla_policy ip_vs_daemon_policy
[IPVS_DAEMON_ATTR_MAX
+ 1] = {
2815 [IPVS_DAEMON_ATTR_STATE
] = { .type
= NLA_U32
},
2816 [IPVS_DAEMON_ATTR_MCAST_IFN
] = { .type
= NLA_NUL_STRING
,
2817 .len
= IP_VS_IFNAME_MAXLEN
},
2818 [IPVS_DAEMON_ATTR_SYNC_ID
] = { .type
= NLA_U32
},
2821 /* Policy used for attributes in nested attribute IPVS_CMD_ATTR_SERVICE */
2822 static const struct nla_policy ip_vs_svc_policy
[IPVS_SVC_ATTR_MAX
+ 1] = {
2823 [IPVS_SVC_ATTR_AF
] = { .type
= NLA_U16
},
2824 [IPVS_SVC_ATTR_PROTOCOL
] = { .type
= NLA_U16
},
2825 [IPVS_SVC_ATTR_ADDR
] = { .type
= NLA_BINARY
,
2826 .len
= sizeof(union nf_inet_addr
) },
2827 [IPVS_SVC_ATTR_PORT
] = { .type
= NLA_U16
},
2828 [IPVS_SVC_ATTR_FWMARK
] = { .type
= NLA_U32
},
2829 [IPVS_SVC_ATTR_SCHED_NAME
] = { .type
= NLA_NUL_STRING
,
2830 .len
= IP_VS_SCHEDNAME_MAXLEN
},
2831 [IPVS_SVC_ATTR_PE_NAME
] = { .type
= NLA_NUL_STRING
,
2832 .len
= IP_VS_PENAME_MAXLEN
},
2833 [IPVS_SVC_ATTR_FLAGS
] = { .type
= NLA_BINARY
,
2834 .len
= sizeof(struct ip_vs_flags
) },
2835 [IPVS_SVC_ATTR_TIMEOUT
] = { .type
= NLA_U32
},
2836 [IPVS_SVC_ATTR_NETMASK
] = { .type
= NLA_U32
},
2837 [IPVS_SVC_ATTR_STATS
] = { .type
= NLA_NESTED
},
2840 /* Policy used for attributes in nested attribute IPVS_CMD_ATTR_DEST */
2841 static const struct nla_policy ip_vs_dest_policy
[IPVS_DEST_ATTR_MAX
+ 1] = {
2842 [IPVS_DEST_ATTR_ADDR
] = { .type
= NLA_BINARY
,
2843 .len
= sizeof(union nf_inet_addr
) },
2844 [IPVS_DEST_ATTR_PORT
] = { .type
= NLA_U16
},
2845 [IPVS_DEST_ATTR_FWD_METHOD
] = { .type
= NLA_U32
},
2846 [IPVS_DEST_ATTR_WEIGHT
] = { .type
= NLA_U32
},
2847 [IPVS_DEST_ATTR_U_THRESH
] = { .type
= NLA_U32
},
2848 [IPVS_DEST_ATTR_L_THRESH
] = { .type
= NLA_U32
},
2849 [IPVS_DEST_ATTR_ACTIVE_CONNS
] = { .type
= NLA_U32
},
2850 [IPVS_DEST_ATTR_INACT_CONNS
] = { .type
= NLA_U32
},
2851 [IPVS_DEST_ATTR_PERSIST_CONNS
] = { .type
= NLA_U32
},
2852 [IPVS_DEST_ATTR_STATS
] = { .type
= NLA_NESTED
},
2855 static int ip_vs_genl_fill_stats(struct sk_buff
*skb
, int container_type
,
2856 struct ip_vs_stats
*stats
)
2858 struct ip_vs_stats_user ustats
;
2859 struct nlattr
*nl_stats
= nla_nest_start(skb
, container_type
);
2863 ip_vs_copy_stats(&ustats
, stats
);
2865 if (nla_put_u32(skb
, IPVS_STATS_ATTR_CONNS
, ustats
.conns
) ||
2866 nla_put_u32(skb
, IPVS_STATS_ATTR_INPKTS
, ustats
.inpkts
) ||
2867 nla_put_u32(skb
, IPVS_STATS_ATTR_OUTPKTS
, ustats
.outpkts
) ||
2868 nla_put_u64(skb
, IPVS_STATS_ATTR_INBYTES
, ustats
.inbytes
) ||
2869 nla_put_u64(skb
, IPVS_STATS_ATTR_OUTBYTES
, ustats
.outbytes
) ||
2870 nla_put_u32(skb
, IPVS_STATS_ATTR_CPS
, ustats
.cps
) ||
2871 nla_put_u32(skb
, IPVS_STATS_ATTR_INPPS
, ustats
.inpps
) ||
2872 nla_put_u32(skb
, IPVS_STATS_ATTR_OUTPPS
, ustats
.outpps
) ||
2873 nla_put_u32(skb
, IPVS_STATS_ATTR_INBPS
, ustats
.inbps
) ||
2874 nla_put_u32(skb
, IPVS_STATS_ATTR_OUTBPS
, ustats
.outbps
))
2875 goto nla_put_failure
;
2876 nla_nest_end(skb
, nl_stats
);
2881 nla_nest_cancel(skb
, nl_stats
);
2885 static int ip_vs_genl_fill_service(struct sk_buff
*skb
,
2886 struct ip_vs_service
*svc
)
2888 struct ip_vs_scheduler
*sched
;
2889 struct ip_vs_pe
*pe
;
2890 struct nlattr
*nl_service
;
2891 struct ip_vs_flags flags
= { .flags
= svc
->flags
,
2894 nl_service
= nla_nest_start(skb
, IPVS_CMD_ATTR_SERVICE
);
2898 if (nla_put_u16(skb
, IPVS_SVC_ATTR_AF
, svc
->af
))
2899 goto nla_put_failure
;
2901 if (nla_put_u32(skb
, IPVS_SVC_ATTR_FWMARK
, svc
->fwmark
))
2902 goto nla_put_failure
;
2904 if (nla_put_u16(skb
, IPVS_SVC_ATTR_PROTOCOL
, svc
->protocol
) ||
2905 nla_put(skb
, IPVS_SVC_ATTR_ADDR
, sizeof(svc
->addr
), &svc
->addr
) ||
2906 nla_put_be16(skb
, IPVS_SVC_ATTR_PORT
, svc
->port
))
2907 goto nla_put_failure
;
2910 sched
= rcu_dereference_protected(svc
->scheduler
, 1);
2911 pe
= rcu_dereference_protected(svc
->pe
, 1);
2912 if (nla_put_string(skb
, IPVS_SVC_ATTR_SCHED_NAME
, sched
->name
) ||
2913 (pe
&& nla_put_string(skb
, IPVS_SVC_ATTR_PE_NAME
, pe
->name
)) ||
2914 nla_put(skb
, IPVS_SVC_ATTR_FLAGS
, sizeof(flags
), &flags
) ||
2915 nla_put_u32(skb
, IPVS_SVC_ATTR_TIMEOUT
, svc
->timeout
/ HZ
) ||
2916 nla_put_be32(skb
, IPVS_SVC_ATTR_NETMASK
, svc
->netmask
))
2917 goto nla_put_failure
;
2918 if (ip_vs_genl_fill_stats(skb
, IPVS_SVC_ATTR_STATS
, &svc
->stats
))
2919 goto nla_put_failure
;
2921 nla_nest_end(skb
, nl_service
);
2926 nla_nest_cancel(skb
, nl_service
);
2930 static int ip_vs_genl_dump_service(struct sk_buff
*skb
,
2931 struct ip_vs_service
*svc
,
2932 struct netlink_callback
*cb
)
2936 hdr
= genlmsg_put(skb
, NETLINK_CB(cb
->skb
).portid
, cb
->nlh
->nlmsg_seq
,
2937 &ip_vs_genl_family
, NLM_F_MULTI
,
2938 IPVS_CMD_NEW_SERVICE
);
2942 if (ip_vs_genl_fill_service(skb
, svc
) < 0)
2943 goto nla_put_failure
;
2945 return genlmsg_end(skb
, hdr
);
2948 genlmsg_cancel(skb
, hdr
);
2952 static int ip_vs_genl_dump_services(struct sk_buff
*skb
,
2953 struct netlink_callback
*cb
)
2956 int start
= cb
->args
[0];
2957 struct ip_vs_service
*svc
;
2958 struct net
*net
= skb_sknet(skb
);
2960 mutex_lock(&__ip_vs_mutex
);
2961 for (i
= 0; i
< IP_VS_SVC_TAB_SIZE
; i
++) {
2962 hlist_for_each_entry(svc
, &ip_vs_svc_table
[i
], s_list
) {
2963 if (++idx
<= start
|| !net_eq(svc
->net
, net
))
2965 if (ip_vs_genl_dump_service(skb
, svc
, cb
) < 0) {
2967 goto nla_put_failure
;
2972 for (i
= 0; i
< IP_VS_SVC_TAB_SIZE
; i
++) {
2973 hlist_for_each_entry(svc
, &ip_vs_svc_fwm_table
[i
], f_list
) {
2974 if (++idx
<= start
|| !net_eq(svc
->net
, net
))
2976 if (ip_vs_genl_dump_service(skb
, svc
, cb
) < 0) {
2978 goto nla_put_failure
;
2984 mutex_unlock(&__ip_vs_mutex
);
2990 static int ip_vs_genl_parse_service(struct net
*net
,
2991 struct ip_vs_service_user_kern
*usvc
,
2992 struct nlattr
*nla
, int full_entry
,
2993 struct ip_vs_service
**ret_svc
)
2995 struct nlattr
*attrs
[IPVS_SVC_ATTR_MAX
+ 1];
2996 struct nlattr
*nla_af
, *nla_port
, *nla_fwmark
, *nla_protocol
, *nla_addr
;
2997 struct ip_vs_service
*svc
;
2999 /* Parse mandatory identifying service fields first */
3001 nla_parse_nested(attrs
, IPVS_SVC_ATTR_MAX
, nla
, ip_vs_svc_policy
))
3004 nla_af
= attrs
[IPVS_SVC_ATTR_AF
];
3005 nla_protocol
= attrs
[IPVS_SVC_ATTR_PROTOCOL
];
3006 nla_addr
= attrs
[IPVS_SVC_ATTR_ADDR
];
3007 nla_port
= attrs
[IPVS_SVC_ATTR_PORT
];
3008 nla_fwmark
= attrs
[IPVS_SVC_ATTR_FWMARK
];
3010 if (!(nla_af
&& (nla_fwmark
|| (nla_port
&& nla_protocol
&& nla_addr
))))
3013 memset(usvc
, 0, sizeof(*usvc
));
3015 usvc
->af
= nla_get_u16(nla_af
);
3016 #ifdef CONFIG_IP_VS_IPV6
3017 if (usvc
->af
!= AF_INET
&& usvc
->af
!= AF_INET6
)
3019 if (usvc
->af
!= AF_INET
)
3021 return -EAFNOSUPPORT
;
3024 usvc
->protocol
= IPPROTO_TCP
;
3025 usvc
->fwmark
= nla_get_u32(nla_fwmark
);
3027 usvc
->protocol
= nla_get_u16(nla_protocol
);
3028 nla_memcpy(&usvc
->addr
, nla_addr
, sizeof(usvc
->addr
));
3029 usvc
->port
= nla_get_be16(nla_port
);
3035 svc
= __ip_vs_svc_fwm_find(net
, usvc
->af
, usvc
->fwmark
);
3037 svc
= __ip_vs_service_find(net
, usvc
->af
, usvc
->protocol
,
3038 &usvc
->addr
, usvc
->port
);
3042 /* If a full entry was requested, check for the additional fields */
3044 struct nlattr
*nla_sched
, *nla_flags
, *nla_pe
, *nla_timeout
,
3046 struct ip_vs_flags flags
;
3048 nla_sched
= attrs
[IPVS_SVC_ATTR_SCHED_NAME
];
3049 nla_pe
= attrs
[IPVS_SVC_ATTR_PE_NAME
];
3050 nla_flags
= attrs
[IPVS_SVC_ATTR_FLAGS
];
3051 nla_timeout
= attrs
[IPVS_SVC_ATTR_TIMEOUT
];
3052 nla_netmask
= attrs
[IPVS_SVC_ATTR_NETMASK
];
3054 if (!(nla_sched
&& nla_flags
&& nla_timeout
&& nla_netmask
))
3057 nla_memcpy(&flags
, nla_flags
, sizeof(flags
));
3059 /* prefill flags from service if it already exists */
3061 usvc
->flags
= svc
->flags
;
3063 /* set new flags from userland */
3064 usvc
->flags
= (usvc
->flags
& ~flags
.mask
) |
3065 (flags
.flags
& flags
.mask
);
3066 usvc
->sched_name
= nla_data(nla_sched
);
3067 usvc
->pe_name
= nla_pe
? nla_data(nla_pe
) : NULL
;
3068 usvc
->timeout
= nla_get_u32(nla_timeout
);
3069 usvc
->netmask
= nla_get_be32(nla_netmask
);
3075 static struct ip_vs_service
*ip_vs_genl_find_service(struct net
*net
,
3078 struct ip_vs_service_user_kern usvc
;
3079 struct ip_vs_service
*svc
;
3082 ret
= ip_vs_genl_parse_service(net
, &usvc
, nla
, 0, &svc
);
3083 return ret
? ERR_PTR(ret
) : svc
;
3086 static int ip_vs_genl_fill_dest(struct sk_buff
*skb
, struct ip_vs_dest
*dest
)
3088 struct nlattr
*nl_dest
;
3090 nl_dest
= nla_nest_start(skb
, IPVS_CMD_ATTR_DEST
);
3094 if (nla_put(skb
, IPVS_DEST_ATTR_ADDR
, sizeof(dest
->addr
), &dest
->addr
) ||
3095 nla_put_be16(skb
, IPVS_DEST_ATTR_PORT
, dest
->port
) ||
3096 nla_put_u32(skb
, IPVS_DEST_ATTR_FWD_METHOD
,
3097 (atomic_read(&dest
->conn_flags
) &
3098 IP_VS_CONN_F_FWD_MASK
)) ||
3099 nla_put_u32(skb
, IPVS_DEST_ATTR_WEIGHT
,
3100 atomic_read(&dest
->weight
)) ||
3101 nla_put_u32(skb
, IPVS_DEST_ATTR_U_THRESH
, dest
->u_threshold
) ||
3102 nla_put_u32(skb
, IPVS_DEST_ATTR_L_THRESH
, dest
->l_threshold
) ||
3103 nla_put_u32(skb
, IPVS_DEST_ATTR_ACTIVE_CONNS
,
3104 atomic_read(&dest
->activeconns
)) ||
3105 nla_put_u32(skb
, IPVS_DEST_ATTR_INACT_CONNS
,
3106 atomic_read(&dest
->inactconns
)) ||
3107 nla_put_u32(skb
, IPVS_DEST_ATTR_PERSIST_CONNS
,
3108 atomic_read(&dest
->persistconns
)))
3109 goto nla_put_failure
;
3110 if (ip_vs_genl_fill_stats(skb
, IPVS_DEST_ATTR_STATS
, &dest
->stats
))
3111 goto nla_put_failure
;
3113 nla_nest_end(skb
, nl_dest
);
3118 nla_nest_cancel(skb
, nl_dest
);
3122 static int ip_vs_genl_dump_dest(struct sk_buff
*skb
, struct ip_vs_dest
*dest
,
3123 struct netlink_callback
*cb
)
3127 hdr
= genlmsg_put(skb
, NETLINK_CB(cb
->skb
).portid
, cb
->nlh
->nlmsg_seq
,
3128 &ip_vs_genl_family
, NLM_F_MULTI
,
3133 if (ip_vs_genl_fill_dest(skb
, dest
) < 0)
3134 goto nla_put_failure
;
3136 return genlmsg_end(skb
, hdr
);
3139 genlmsg_cancel(skb
, hdr
);
3143 static int ip_vs_genl_dump_dests(struct sk_buff
*skb
,
3144 struct netlink_callback
*cb
)
3147 int start
= cb
->args
[0];
3148 struct ip_vs_service
*svc
;
3149 struct ip_vs_dest
*dest
;
3150 struct nlattr
*attrs
[IPVS_CMD_ATTR_MAX
+ 1];
3151 struct net
*net
= skb_sknet(skb
);
3153 mutex_lock(&__ip_vs_mutex
);
3155 /* Try to find the service for which to dump destinations */
3156 if (nlmsg_parse(cb
->nlh
, GENL_HDRLEN
, attrs
,
3157 IPVS_CMD_ATTR_MAX
, ip_vs_cmd_policy
))
3161 svc
= ip_vs_genl_find_service(net
, attrs
[IPVS_CMD_ATTR_SERVICE
]);
3162 if (IS_ERR(svc
) || svc
== NULL
)
3165 /* Dump the destinations */
3166 list_for_each_entry(dest
, &svc
->destinations
, n_list
) {
3169 if (ip_vs_genl_dump_dest(skb
, dest
, cb
) < 0) {
3171 goto nla_put_failure
;
3179 mutex_unlock(&__ip_vs_mutex
);
3184 static int ip_vs_genl_parse_dest(struct ip_vs_dest_user_kern
*udest
,
3185 struct nlattr
*nla
, int full_entry
)
3187 struct nlattr
*attrs
[IPVS_DEST_ATTR_MAX
+ 1];
3188 struct nlattr
*nla_addr
, *nla_port
;
3190 /* Parse mandatory identifying destination fields first */
3192 nla_parse_nested(attrs
, IPVS_DEST_ATTR_MAX
, nla
, ip_vs_dest_policy
))
3195 nla_addr
= attrs
[IPVS_DEST_ATTR_ADDR
];
3196 nla_port
= attrs
[IPVS_DEST_ATTR_PORT
];
3198 if (!(nla_addr
&& nla_port
))
3201 memset(udest
, 0, sizeof(*udest
));
3203 nla_memcpy(&udest
->addr
, nla_addr
, sizeof(udest
->addr
));
3204 udest
->port
= nla_get_be16(nla_port
);
3206 /* If a full entry was requested, check for the additional fields */
3208 struct nlattr
*nla_fwd
, *nla_weight
, *nla_u_thresh
,
3211 nla_fwd
= attrs
[IPVS_DEST_ATTR_FWD_METHOD
];
3212 nla_weight
= attrs
[IPVS_DEST_ATTR_WEIGHT
];
3213 nla_u_thresh
= attrs
[IPVS_DEST_ATTR_U_THRESH
];
3214 nla_l_thresh
= attrs
[IPVS_DEST_ATTR_L_THRESH
];
3216 if (!(nla_fwd
&& nla_weight
&& nla_u_thresh
&& nla_l_thresh
))
3219 udest
->conn_flags
= nla_get_u32(nla_fwd
)
3220 & IP_VS_CONN_F_FWD_MASK
;
3221 udest
->weight
= nla_get_u32(nla_weight
);
3222 udest
->u_threshold
= nla_get_u32(nla_u_thresh
);
3223 udest
->l_threshold
= nla_get_u32(nla_l_thresh
);
3229 static int ip_vs_genl_fill_daemon(struct sk_buff
*skb
, __u32 state
,
3230 const char *mcast_ifn
, __u32 syncid
)
3232 struct nlattr
*nl_daemon
;
3234 nl_daemon
= nla_nest_start(skb
, IPVS_CMD_ATTR_DAEMON
);
3238 if (nla_put_u32(skb
, IPVS_DAEMON_ATTR_STATE
, state
) ||
3239 nla_put_string(skb
, IPVS_DAEMON_ATTR_MCAST_IFN
, mcast_ifn
) ||
3240 nla_put_u32(skb
, IPVS_DAEMON_ATTR_SYNC_ID
, syncid
))
3241 goto nla_put_failure
;
3242 nla_nest_end(skb
, nl_daemon
);
3247 nla_nest_cancel(skb
, nl_daemon
);
3251 static int ip_vs_genl_dump_daemon(struct sk_buff
*skb
, __u32 state
,
3252 const char *mcast_ifn
, __u32 syncid
,
3253 struct netlink_callback
*cb
)
3256 hdr
= genlmsg_put(skb
, NETLINK_CB(cb
->skb
).portid
, cb
->nlh
->nlmsg_seq
,
3257 &ip_vs_genl_family
, NLM_F_MULTI
,
3258 IPVS_CMD_NEW_DAEMON
);
3262 if (ip_vs_genl_fill_daemon(skb
, state
, mcast_ifn
, syncid
))
3263 goto nla_put_failure
;
3265 return genlmsg_end(skb
, hdr
);
3268 genlmsg_cancel(skb
, hdr
);
3272 static int ip_vs_genl_dump_daemons(struct sk_buff
*skb
,
3273 struct netlink_callback
*cb
)
3275 struct net
*net
= skb_sknet(skb
);
3276 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3278 mutex_lock(&ipvs
->sync_mutex
);
3279 if ((ipvs
->sync_state
& IP_VS_STATE_MASTER
) && !cb
->args
[0]) {
3280 if (ip_vs_genl_dump_daemon(skb
, IP_VS_STATE_MASTER
,
3281 ipvs
->master_mcast_ifn
,
3282 ipvs
->master_syncid
, cb
) < 0)
3283 goto nla_put_failure
;
3288 if ((ipvs
->sync_state
& IP_VS_STATE_BACKUP
) && !cb
->args
[1]) {
3289 if (ip_vs_genl_dump_daemon(skb
, IP_VS_STATE_BACKUP
,
3290 ipvs
->backup_mcast_ifn
,
3291 ipvs
->backup_syncid
, cb
) < 0)
3292 goto nla_put_failure
;
3298 mutex_unlock(&ipvs
->sync_mutex
);
3303 static int ip_vs_genl_new_daemon(struct net
*net
, struct nlattr
**attrs
)
3305 if (!(attrs
[IPVS_DAEMON_ATTR_STATE
] &&
3306 attrs
[IPVS_DAEMON_ATTR_MCAST_IFN
] &&
3307 attrs
[IPVS_DAEMON_ATTR_SYNC_ID
]))
3310 return start_sync_thread(net
,
3311 nla_get_u32(attrs
[IPVS_DAEMON_ATTR_STATE
]),
3312 nla_data(attrs
[IPVS_DAEMON_ATTR_MCAST_IFN
]),
3313 nla_get_u32(attrs
[IPVS_DAEMON_ATTR_SYNC_ID
]));
3316 static int ip_vs_genl_del_daemon(struct net
*net
, struct nlattr
**attrs
)
3318 if (!attrs
[IPVS_DAEMON_ATTR_STATE
])
3321 return stop_sync_thread(net
,
3322 nla_get_u32(attrs
[IPVS_DAEMON_ATTR_STATE
]));
3325 static int ip_vs_genl_set_config(struct net
*net
, struct nlattr
**attrs
)
3327 struct ip_vs_timeout_user t
;
3329 __ip_vs_get_timeouts(net
, &t
);
3331 if (attrs
[IPVS_CMD_ATTR_TIMEOUT_TCP
])
3332 t
.tcp_timeout
= nla_get_u32(attrs
[IPVS_CMD_ATTR_TIMEOUT_TCP
]);
3334 if (attrs
[IPVS_CMD_ATTR_TIMEOUT_TCP_FIN
])
3336 nla_get_u32(attrs
[IPVS_CMD_ATTR_TIMEOUT_TCP_FIN
]);
3338 if (attrs
[IPVS_CMD_ATTR_TIMEOUT_UDP
])
3339 t
.udp_timeout
= nla_get_u32(attrs
[IPVS_CMD_ATTR_TIMEOUT_UDP
]);
3341 return ip_vs_set_timeout(net
, &t
);
3344 static int ip_vs_genl_set_daemon(struct sk_buff
*skb
, struct genl_info
*info
)
3348 struct netns_ipvs
*ipvs
;
3350 net
= skb_sknet(skb
);
3351 ipvs
= net_ipvs(net
);
3352 cmd
= info
->genlhdr
->cmd
;
3354 if (cmd
== IPVS_CMD_NEW_DAEMON
|| cmd
== IPVS_CMD_DEL_DAEMON
) {
3355 struct nlattr
*daemon_attrs
[IPVS_DAEMON_ATTR_MAX
+ 1];
3357 mutex_lock(&ipvs
->sync_mutex
);
3358 if (!info
->attrs
[IPVS_CMD_ATTR_DAEMON
] ||
3359 nla_parse_nested(daemon_attrs
, IPVS_DAEMON_ATTR_MAX
,
3360 info
->attrs
[IPVS_CMD_ATTR_DAEMON
],
3361 ip_vs_daemon_policy
)) {
3366 if (cmd
== IPVS_CMD_NEW_DAEMON
)
3367 ret
= ip_vs_genl_new_daemon(net
, daemon_attrs
);
3369 ret
= ip_vs_genl_del_daemon(net
, daemon_attrs
);
3371 mutex_unlock(&ipvs
->sync_mutex
);
3376 static int ip_vs_genl_set_cmd(struct sk_buff
*skb
, struct genl_info
*info
)
3378 struct ip_vs_service
*svc
= NULL
;
3379 struct ip_vs_service_user_kern usvc
;
3380 struct ip_vs_dest_user_kern udest
;
3382 int need_full_svc
= 0, need_full_dest
= 0;
3385 net
= skb_sknet(skb
);
3386 cmd
= info
->genlhdr
->cmd
;
3388 mutex_lock(&__ip_vs_mutex
);
3390 if (cmd
== IPVS_CMD_FLUSH
) {
3391 ret
= ip_vs_flush(net
, false);
3393 } else if (cmd
== IPVS_CMD_SET_CONFIG
) {
3394 ret
= ip_vs_genl_set_config(net
, info
->attrs
);
3396 } else if (cmd
== IPVS_CMD_ZERO
&&
3397 !info
->attrs
[IPVS_CMD_ATTR_SERVICE
]) {
3398 ret
= ip_vs_zero_all(net
);
3402 /* All following commands require a service argument, so check if we
3403 * received a valid one. We need a full service specification when
3404 * adding / editing a service. Only identifying members otherwise. */
3405 if (cmd
== IPVS_CMD_NEW_SERVICE
|| cmd
== IPVS_CMD_SET_SERVICE
)
3408 ret
= ip_vs_genl_parse_service(net
, &usvc
,
3409 info
->attrs
[IPVS_CMD_ATTR_SERVICE
],
3410 need_full_svc
, &svc
);
3414 /* Unless we're adding a new service, the service must already exist */
3415 if ((cmd
!= IPVS_CMD_NEW_SERVICE
) && (svc
== NULL
)) {
3420 /* Destination commands require a valid destination argument. For
3421 * adding / editing a destination, we need a full destination
3423 if (cmd
== IPVS_CMD_NEW_DEST
|| cmd
== IPVS_CMD_SET_DEST
||
3424 cmd
== IPVS_CMD_DEL_DEST
) {
3425 if (cmd
!= IPVS_CMD_DEL_DEST
)
3428 ret
= ip_vs_genl_parse_dest(&udest
,
3429 info
->attrs
[IPVS_CMD_ATTR_DEST
],
3436 case IPVS_CMD_NEW_SERVICE
:
3438 ret
= ip_vs_add_service(net
, &usvc
, &svc
);
3442 case IPVS_CMD_SET_SERVICE
:
3443 ret
= ip_vs_edit_service(svc
, &usvc
);
3445 case IPVS_CMD_DEL_SERVICE
:
3446 ret
= ip_vs_del_service(svc
);
3447 /* do not use svc, it can be freed */
3449 case IPVS_CMD_NEW_DEST
:
3450 ret
= ip_vs_add_dest(svc
, &udest
);
3452 case IPVS_CMD_SET_DEST
:
3453 ret
= ip_vs_edit_dest(svc
, &udest
);
3455 case IPVS_CMD_DEL_DEST
:
3456 ret
= ip_vs_del_dest(svc
, &udest
);
3459 ret
= ip_vs_zero_service(svc
);
3466 mutex_unlock(&__ip_vs_mutex
);
3471 static int ip_vs_genl_get_cmd(struct sk_buff
*skb
, struct genl_info
*info
)
3473 struct sk_buff
*msg
;
3475 int ret
, cmd
, reply_cmd
;
3478 net
= skb_sknet(skb
);
3479 cmd
= info
->genlhdr
->cmd
;
3481 if (cmd
== IPVS_CMD_GET_SERVICE
)
3482 reply_cmd
= IPVS_CMD_NEW_SERVICE
;
3483 else if (cmd
== IPVS_CMD_GET_INFO
)
3484 reply_cmd
= IPVS_CMD_SET_INFO
;
3485 else if (cmd
== IPVS_CMD_GET_CONFIG
)
3486 reply_cmd
= IPVS_CMD_SET_CONFIG
;
3488 pr_err("unknown Generic Netlink command\n");
3492 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_KERNEL
);
3496 mutex_lock(&__ip_vs_mutex
);
3498 reply
= genlmsg_put_reply(msg
, info
, &ip_vs_genl_family
, 0, reply_cmd
);
3500 goto nla_put_failure
;
3503 case IPVS_CMD_GET_SERVICE
:
3505 struct ip_vs_service
*svc
;
3507 svc
= ip_vs_genl_find_service(net
,
3508 info
->attrs
[IPVS_CMD_ATTR_SERVICE
]);
3513 ret
= ip_vs_genl_fill_service(msg
, svc
);
3515 goto nla_put_failure
;
3524 case IPVS_CMD_GET_CONFIG
:
3526 struct ip_vs_timeout_user t
;
3528 __ip_vs_get_timeouts(net
, &t
);
3529 #ifdef CONFIG_IP_VS_PROTO_TCP
3530 if (nla_put_u32(msg
, IPVS_CMD_ATTR_TIMEOUT_TCP
,
3532 nla_put_u32(msg
, IPVS_CMD_ATTR_TIMEOUT_TCP_FIN
,
3534 goto nla_put_failure
;
3536 #ifdef CONFIG_IP_VS_PROTO_UDP
3537 if (nla_put_u32(msg
, IPVS_CMD_ATTR_TIMEOUT_UDP
, t
.udp_timeout
))
3538 goto nla_put_failure
;
3544 case IPVS_CMD_GET_INFO
:
3545 if (nla_put_u32(msg
, IPVS_INFO_ATTR_VERSION
,
3546 IP_VS_VERSION_CODE
) ||
3547 nla_put_u32(msg
, IPVS_INFO_ATTR_CONN_TAB_SIZE
,
3548 ip_vs_conn_tab_size
))
3549 goto nla_put_failure
;
3553 genlmsg_end(msg
, reply
);
3554 ret
= genlmsg_reply(msg
, info
);
3558 pr_err("not enough space in Netlink message\n");
3564 mutex_unlock(&__ip_vs_mutex
);
3570 static const struct genl_ops ip_vs_genl_ops
[] __read_mostly
= {
3572 .cmd
= IPVS_CMD_NEW_SERVICE
,
3573 .flags
= GENL_ADMIN_PERM
,
3574 .policy
= ip_vs_cmd_policy
,
3575 .doit
= ip_vs_genl_set_cmd
,
3578 .cmd
= IPVS_CMD_SET_SERVICE
,
3579 .flags
= GENL_ADMIN_PERM
,
3580 .policy
= ip_vs_cmd_policy
,
3581 .doit
= ip_vs_genl_set_cmd
,
3584 .cmd
= IPVS_CMD_DEL_SERVICE
,
3585 .flags
= GENL_ADMIN_PERM
,
3586 .policy
= ip_vs_cmd_policy
,
3587 .doit
= ip_vs_genl_set_cmd
,
3590 .cmd
= IPVS_CMD_GET_SERVICE
,
3591 .flags
= GENL_ADMIN_PERM
,
3592 .doit
= ip_vs_genl_get_cmd
,
3593 .dumpit
= ip_vs_genl_dump_services
,
3594 .policy
= ip_vs_cmd_policy
,
3597 .cmd
= IPVS_CMD_NEW_DEST
,
3598 .flags
= GENL_ADMIN_PERM
,
3599 .policy
= ip_vs_cmd_policy
,
3600 .doit
= ip_vs_genl_set_cmd
,
3603 .cmd
= IPVS_CMD_SET_DEST
,
3604 .flags
= GENL_ADMIN_PERM
,
3605 .policy
= ip_vs_cmd_policy
,
3606 .doit
= ip_vs_genl_set_cmd
,
3609 .cmd
= IPVS_CMD_DEL_DEST
,
3610 .flags
= GENL_ADMIN_PERM
,
3611 .policy
= ip_vs_cmd_policy
,
3612 .doit
= ip_vs_genl_set_cmd
,
3615 .cmd
= IPVS_CMD_GET_DEST
,
3616 .flags
= GENL_ADMIN_PERM
,
3617 .policy
= ip_vs_cmd_policy
,
3618 .dumpit
= ip_vs_genl_dump_dests
,
3621 .cmd
= IPVS_CMD_NEW_DAEMON
,
3622 .flags
= GENL_ADMIN_PERM
,
3623 .policy
= ip_vs_cmd_policy
,
3624 .doit
= ip_vs_genl_set_daemon
,
3627 .cmd
= IPVS_CMD_DEL_DAEMON
,
3628 .flags
= GENL_ADMIN_PERM
,
3629 .policy
= ip_vs_cmd_policy
,
3630 .doit
= ip_vs_genl_set_daemon
,
3633 .cmd
= IPVS_CMD_GET_DAEMON
,
3634 .flags
= GENL_ADMIN_PERM
,
3635 .dumpit
= ip_vs_genl_dump_daemons
,
3638 .cmd
= IPVS_CMD_SET_CONFIG
,
3639 .flags
= GENL_ADMIN_PERM
,
3640 .policy
= ip_vs_cmd_policy
,
3641 .doit
= ip_vs_genl_set_cmd
,
3644 .cmd
= IPVS_CMD_GET_CONFIG
,
3645 .flags
= GENL_ADMIN_PERM
,
3646 .doit
= ip_vs_genl_get_cmd
,
3649 .cmd
= IPVS_CMD_GET_INFO
,
3650 .flags
= GENL_ADMIN_PERM
,
3651 .doit
= ip_vs_genl_get_cmd
,
3654 .cmd
= IPVS_CMD_ZERO
,
3655 .flags
= GENL_ADMIN_PERM
,
3656 .policy
= ip_vs_cmd_policy
,
3657 .doit
= ip_vs_genl_set_cmd
,
3660 .cmd
= IPVS_CMD_FLUSH
,
3661 .flags
= GENL_ADMIN_PERM
,
3662 .doit
= ip_vs_genl_set_cmd
,
3666 static int __init
ip_vs_genl_register(void)
3668 return genl_register_family_with_ops(&ip_vs_genl_family
,
3669 ip_vs_genl_ops
, ARRAY_SIZE(ip_vs_genl_ops
));
3672 static void ip_vs_genl_unregister(void)
3674 genl_unregister_family(&ip_vs_genl_family
);
3677 /* End of Generic Netlink interface definitions */
3680 * per netns intit/exit func.
3682 #ifdef CONFIG_SYSCTL
3683 static int __net_init
ip_vs_control_net_init_sysctl(struct net
*net
)
3686 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3687 struct ctl_table
*tbl
;
3689 atomic_set(&ipvs
->dropentry
, 0);
3690 spin_lock_init(&ipvs
->dropentry_lock
);
3691 spin_lock_init(&ipvs
->droppacket_lock
);
3692 spin_lock_init(&ipvs
->securetcp_lock
);
3694 if (!net_eq(net
, &init_net
)) {
3695 tbl
= kmemdup(vs_vars
, sizeof(vs_vars
), GFP_KERNEL
);
3699 /* Don't export sysctls to unprivileged users */
3700 if (net
->user_ns
!= &init_user_ns
)
3701 tbl
[0].procname
= NULL
;
3704 /* Initialize sysctl defaults */
3706 ipvs
->sysctl_amemthresh
= 1024;
3707 tbl
[idx
++].data
= &ipvs
->sysctl_amemthresh
;
3708 ipvs
->sysctl_am_droprate
= 10;
3709 tbl
[idx
++].data
= &ipvs
->sysctl_am_droprate
;
3710 tbl
[idx
++].data
= &ipvs
->sysctl_drop_entry
;
3711 tbl
[idx
++].data
= &ipvs
->sysctl_drop_packet
;
3712 #ifdef CONFIG_IP_VS_NFCT
3713 tbl
[idx
++].data
= &ipvs
->sysctl_conntrack
;
3715 tbl
[idx
++].data
= &ipvs
->sysctl_secure_tcp
;
3716 ipvs
->sysctl_snat_reroute
= 1;
3717 tbl
[idx
++].data
= &ipvs
->sysctl_snat_reroute
;
3718 ipvs
->sysctl_sync_ver
= 1;
3719 tbl
[idx
++].data
= &ipvs
->sysctl_sync_ver
;
3720 ipvs
->sysctl_sync_ports
= 1;
3721 tbl
[idx
++].data
= &ipvs
->sysctl_sync_ports
;
3722 tbl
[idx
++].data
= &ipvs
->sysctl_sync_persist_mode
;
3723 ipvs
->sysctl_sync_qlen_max
= nr_free_buffer_pages() / 32;
3724 tbl
[idx
++].data
= &ipvs
->sysctl_sync_qlen_max
;
3725 ipvs
->sysctl_sync_sock_size
= 0;
3726 tbl
[idx
++].data
= &ipvs
->sysctl_sync_sock_size
;
3727 tbl
[idx
++].data
= &ipvs
->sysctl_cache_bypass
;
3728 tbl
[idx
++].data
= &ipvs
->sysctl_expire_nodest_conn
;
3729 tbl
[idx
++].data
= &ipvs
->sysctl_sloppy_tcp
;
3730 tbl
[idx
++].data
= &ipvs
->sysctl_sloppy_sctp
;
3731 tbl
[idx
++].data
= &ipvs
->sysctl_expire_quiescent_template
;
3732 ipvs
->sysctl_sync_threshold
[0] = DEFAULT_SYNC_THRESHOLD
;
3733 ipvs
->sysctl_sync_threshold
[1] = DEFAULT_SYNC_PERIOD
;
3734 tbl
[idx
].data
= &ipvs
->sysctl_sync_threshold
;
3735 tbl
[idx
++].maxlen
= sizeof(ipvs
->sysctl_sync_threshold
);
3736 ipvs
->sysctl_sync_refresh_period
= DEFAULT_SYNC_REFRESH_PERIOD
;
3737 tbl
[idx
++].data
= &ipvs
->sysctl_sync_refresh_period
;
3738 ipvs
->sysctl_sync_retries
= clamp_t(int, DEFAULT_SYNC_RETRIES
, 0, 3);
3739 tbl
[idx
++].data
= &ipvs
->sysctl_sync_retries
;
3740 tbl
[idx
++].data
= &ipvs
->sysctl_nat_icmp_send
;
3741 ipvs
->sysctl_pmtu_disc
= 1;
3742 tbl
[idx
++].data
= &ipvs
->sysctl_pmtu_disc
;
3743 tbl
[idx
++].data
= &ipvs
->sysctl_backup_only
;
3746 ipvs
->sysctl_hdr
= register_net_sysctl(net
, "net/ipv4/vs", tbl
);
3747 if (ipvs
->sysctl_hdr
== NULL
) {
3748 if (!net_eq(net
, &init_net
))
3752 ip_vs_start_estimator(net
, &ipvs
->tot_stats
);
3753 ipvs
->sysctl_tbl
= tbl
;
3754 /* Schedule defense work */
3755 INIT_DELAYED_WORK(&ipvs
->defense_work
, defense_work_handler
);
3756 schedule_delayed_work(&ipvs
->defense_work
, DEFENSE_TIMER_PERIOD
);
3761 static void __net_exit
ip_vs_control_net_cleanup_sysctl(struct net
*net
)
3763 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3765 cancel_delayed_work_sync(&ipvs
->defense_work
);
3766 cancel_work_sync(&ipvs
->defense_work
.work
);
3767 unregister_net_sysctl_table(ipvs
->sysctl_hdr
);
3772 static int __net_init
ip_vs_control_net_init_sysctl(struct net
*net
) { return 0; }
3773 static void __net_exit
ip_vs_control_net_cleanup_sysctl(struct net
*net
) { }
3777 static struct notifier_block ip_vs_dst_notifier
= {
3778 .notifier_call
= ip_vs_dst_event
,
3781 int __net_init
ip_vs_control_net_init(struct net
*net
)
3784 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3786 /* Initialize rs_table */
3787 for (idx
= 0; idx
< IP_VS_RTAB_SIZE
; idx
++)
3788 INIT_HLIST_HEAD(&ipvs
->rs_table
[idx
]);
3790 INIT_LIST_HEAD(&ipvs
->dest_trash
);
3791 spin_lock_init(&ipvs
->dest_trash_lock
);
3792 setup_timer(&ipvs
->dest_trash_timer
, ip_vs_dest_trash_expire
,
3793 (unsigned long) net
);
3794 atomic_set(&ipvs
->ftpsvc_counter
, 0);
3795 atomic_set(&ipvs
->nullsvc_counter
, 0);
3798 ipvs
->tot_stats
.cpustats
= alloc_percpu(struct ip_vs_cpu_stats
);
3799 if (!ipvs
->tot_stats
.cpustats
)
3802 spin_lock_init(&ipvs
->tot_stats
.lock
);
3804 proc_create("ip_vs", 0, net
->proc_net
, &ip_vs_info_fops
);
3805 proc_create("ip_vs_stats", 0, net
->proc_net
, &ip_vs_stats_fops
);
3806 proc_create("ip_vs_stats_percpu", 0, net
->proc_net
,
3807 &ip_vs_stats_percpu_fops
);
3809 if (ip_vs_control_net_init_sysctl(net
))
3815 free_percpu(ipvs
->tot_stats
.cpustats
);
3819 void __net_exit
ip_vs_control_net_cleanup(struct net
*net
)
3821 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3823 ip_vs_trash_cleanup(net
);
3824 ip_vs_stop_estimator(net
, &ipvs
->tot_stats
);
3825 ip_vs_control_net_cleanup_sysctl(net
);
3826 remove_proc_entry("ip_vs_stats_percpu", net
->proc_net
);
3827 remove_proc_entry("ip_vs_stats", net
->proc_net
);
3828 remove_proc_entry("ip_vs", net
->proc_net
);
3829 free_percpu(ipvs
->tot_stats
.cpustats
);
3832 int __init
ip_vs_register_nl_ioctl(void)
3836 ret
= nf_register_sockopt(&ip_vs_sockopts
);
3838 pr_err("cannot register sockopt.\n");
3842 ret
= ip_vs_genl_register();
3844 pr_err("cannot register Generic Netlink interface.\n");
3850 nf_unregister_sockopt(&ip_vs_sockopts
);
3855 void ip_vs_unregister_nl_ioctl(void)
3857 ip_vs_genl_unregister();
3858 nf_unregister_sockopt(&ip_vs_sockopts
);
3861 int __init
ip_vs_control_init(void)
3868 /* Initialize svc_table, ip_vs_svc_fwm_table */
3869 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
3870 INIT_HLIST_HEAD(&ip_vs_svc_table
[idx
]);
3871 INIT_HLIST_HEAD(&ip_vs_svc_fwm_table
[idx
]);
3874 smp_wmb(); /* Do we really need it now ? */
3876 ret
= register_netdevice_notifier(&ip_vs_dst_notifier
);
3885 void ip_vs_control_cleanup(void)
3888 unregister_netdevice_notifier(&ip_vs_dst_notifier
);