1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * IPVS An implementation of the IP virtual server support for the
4 * LINUX operating system. IPVS is now implemented as a module
5 * over the NetFilter framework. IPVS can be used to build a
6 * high-performance and highly available server based on a
9 * Authors: Wensong Zhang <wensong@linuxvirtualserver.org>
10 * Peter Kese <peter.kese@ijs.si>
11 * Julian Anastasov <ja@ssi.bg>
16 #define KMSG_COMPONENT "IPVS"
17 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
19 #include <linux/module.h>
20 #include <linux/init.h>
21 #include <linux/types.h>
22 #include <linux/capability.h>
24 #include <linux/sysctl.h>
25 #include <linux/proc_fs.h>
26 #include <linux/workqueue.h>
27 #include <linux/swap.h>
28 #include <linux/seq_file.h>
29 #include <linux/slab.h>
31 #include <linux/netfilter.h>
32 #include <linux/netfilter_ipv4.h>
33 #include <linux/mutex.h>
35 #include <net/net_namespace.h>
36 #include <linux/nsproxy.h>
38 #ifdef CONFIG_IP_VS_IPV6
40 #include <net/ip6_route.h>
41 #include <net/netfilter/ipv6/nf_defrag_ipv6.h>
43 #include <net/route.h>
45 #include <net/genetlink.h>
47 #include <linux/uaccess.h>
49 #include <net/ip_vs.h>
51 /* semaphore for IPVS sockopts. And, [gs]etsockopt may sleep. */
52 static DEFINE_MUTEX(__ip_vs_mutex
);
54 /* sysctl variables */
56 #ifdef CONFIG_IP_VS_DEBUG
57 static int sysctl_ip_vs_debug_level
= 0;
59 int ip_vs_get_debug_level(void)
61 return sysctl_ip_vs_debug_level
;
67 static void __ip_vs_del_service(struct ip_vs_service
*svc
, bool cleanup
);
70 #ifdef CONFIG_IP_VS_IPV6
71 /* Taken from rt6_fill_node() in net/ipv6/route.c, is there a better way? */
72 static bool __ip_vs_addr_is_local_v6(struct net
*net
,
73 const struct in6_addr
*addr
)
78 struct dst_entry
*dst
= ip6_route_output(net
, NULL
, &fl6
);
81 is_local
= !dst
->error
&& dst
->dev
&& (dst
->dev
->flags
& IFF_LOOPBACK
);
90 * update_defense_level is called from keventd and from sysctl,
91 * so it needs to protect itself from softirqs
93 static void update_defense_level(struct netns_ipvs
*ipvs
)
100 /* we only count free and buffered memory (in pages) */
102 availmem
= i
.freeram
+ i
.bufferram
;
103 /* however in linux 2.5 the i.bufferram is total page cache size,
105 /* si_swapinfo(&i); */
106 /* availmem = availmem - (i.totalswap - i.freeswap); */
108 nomem
= (availmem
< ipvs
->sysctl_amemthresh
);
113 spin_lock(&ipvs
->dropentry_lock
);
114 switch (ipvs
->sysctl_drop_entry
) {
116 atomic_set(&ipvs
->dropentry
, 0);
120 atomic_set(&ipvs
->dropentry
, 1);
121 ipvs
->sysctl_drop_entry
= 2;
123 atomic_set(&ipvs
->dropentry
, 0);
128 atomic_set(&ipvs
->dropentry
, 1);
130 atomic_set(&ipvs
->dropentry
, 0);
131 ipvs
->sysctl_drop_entry
= 1;
135 atomic_set(&ipvs
->dropentry
, 1);
138 spin_unlock(&ipvs
->dropentry_lock
);
141 spin_lock(&ipvs
->droppacket_lock
);
142 switch (ipvs
->sysctl_drop_packet
) {
148 ipvs
->drop_rate
= ipvs
->drop_counter
149 = ipvs
->sysctl_amemthresh
/
150 (ipvs
->sysctl_amemthresh
-availmem
);
151 ipvs
->sysctl_drop_packet
= 2;
158 ipvs
->drop_rate
= ipvs
->drop_counter
159 = ipvs
->sysctl_amemthresh
/
160 (ipvs
->sysctl_amemthresh
-availmem
);
163 ipvs
->sysctl_drop_packet
= 1;
167 ipvs
->drop_rate
= ipvs
->sysctl_am_droprate
;
170 spin_unlock(&ipvs
->droppacket_lock
);
173 spin_lock(&ipvs
->securetcp_lock
);
174 switch (ipvs
->sysctl_secure_tcp
) {
176 if (ipvs
->old_secure_tcp
>= 2)
181 if (ipvs
->old_secure_tcp
< 2)
183 ipvs
->sysctl_secure_tcp
= 2;
185 if (ipvs
->old_secure_tcp
>= 2)
191 if (ipvs
->old_secure_tcp
< 2)
194 if (ipvs
->old_secure_tcp
>= 2)
196 ipvs
->sysctl_secure_tcp
= 1;
200 if (ipvs
->old_secure_tcp
< 2)
204 ipvs
->old_secure_tcp
= ipvs
->sysctl_secure_tcp
;
206 ip_vs_protocol_timeout_change(ipvs
,
207 ipvs
->sysctl_secure_tcp
> 1);
208 spin_unlock(&ipvs
->securetcp_lock
);
213 /* Handler for delayed work for expiring no
214 * destination connections
216 static void expire_nodest_conn_handler(struct work_struct
*work
)
218 struct netns_ipvs
*ipvs
;
220 ipvs
= container_of(work
, struct netns_ipvs
,
221 expire_nodest_conn_work
.work
);
222 ip_vs_expire_nodest_conn_flush(ipvs
);
226 * Timer for checking the defense
228 #define DEFENSE_TIMER_PERIOD 1*HZ
230 static void defense_work_handler(struct work_struct
*work
)
232 struct netns_ipvs
*ipvs
=
233 container_of(work
, struct netns_ipvs
, defense_work
.work
);
235 update_defense_level(ipvs
);
236 if (atomic_read(&ipvs
->dropentry
))
237 ip_vs_random_dropentry(ipvs
);
238 queue_delayed_work(system_long_wq
, &ipvs
->defense_work
,
239 DEFENSE_TIMER_PERIOD
);
244 ip_vs_use_count_inc(void)
246 return try_module_get(THIS_MODULE
);
250 ip_vs_use_count_dec(void)
252 module_put(THIS_MODULE
);
257 * Hash table: for virtual service lookups
259 #define IP_VS_SVC_TAB_BITS 8
260 #define IP_VS_SVC_TAB_SIZE (1 << IP_VS_SVC_TAB_BITS)
261 #define IP_VS_SVC_TAB_MASK (IP_VS_SVC_TAB_SIZE - 1)
263 /* the service table hashed by <protocol, addr, port> */
264 static struct hlist_head ip_vs_svc_table
[IP_VS_SVC_TAB_SIZE
];
265 /* the service table hashed by fwmark */
266 static struct hlist_head ip_vs_svc_fwm_table
[IP_VS_SVC_TAB_SIZE
];
270 * Returns hash value for virtual service
272 static inline unsigned int
273 ip_vs_svc_hashkey(struct netns_ipvs
*ipvs
, int af
, unsigned int proto
,
274 const union nf_inet_addr
*addr
, __be16 port
)
276 unsigned int porth
= ntohs(port
);
277 __be32 addr_fold
= addr
->ip
;
280 #ifdef CONFIG_IP_VS_IPV6
282 addr_fold
= addr
->ip6
[0]^addr
->ip6
[1]^
283 addr
->ip6
[2]^addr
->ip6
[3];
285 ahash
= ntohl(addr_fold
);
286 ahash
^= ((size_t) ipvs
>> 8);
288 return (proto
^ ahash
^ (porth
>> IP_VS_SVC_TAB_BITS
) ^ porth
) &
293 * Returns hash value of fwmark for virtual service lookup
295 static inline unsigned int ip_vs_svc_fwm_hashkey(struct netns_ipvs
*ipvs
, __u32 fwmark
)
297 return (((size_t)ipvs
>>8) ^ fwmark
) & IP_VS_SVC_TAB_MASK
;
301 * Hashes a service in the ip_vs_svc_table by <netns,proto,addr,port>
302 * or in the ip_vs_svc_fwm_table by fwmark.
303 * Should be called with locked tables.
305 static int ip_vs_svc_hash(struct ip_vs_service
*svc
)
309 if (svc
->flags
& IP_VS_SVC_F_HASHED
) {
310 pr_err("%s(): request for already hashed, called from %pS\n",
311 __func__
, __builtin_return_address(0));
315 if (svc
->fwmark
== 0) {
317 * Hash it by <netns,protocol,addr,port> in ip_vs_svc_table
319 hash
= ip_vs_svc_hashkey(svc
->ipvs
, svc
->af
, svc
->protocol
,
320 &svc
->addr
, svc
->port
);
321 hlist_add_head_rcu(&svc
->s_list
, &ip_vs_svc_table
[hash
]);
324 * Hash it by fwmark in svc_fwm_table
326 hash
= ip_vs_svc_fwm_hashkey(svc
->ipvs
, svc
->fwmark
);
327 hlist_add_head_rcu(&svc
->f_list
, &ip_vs_svc_fwm_table
[hash
]);
330 svc
->flags
|= IP_VS_SVC_F_HASHED
;
331 /* increase its refcnt because it is referenced by the svc table */
332 atomic_inc(&svc
->refcnt
);
338 * Unhashes a service from svc_table / svc_fwm_table.
339 * Should be called with locked tables.
341 static int ip_vs_svc_unhash(struct ip_vs_service
*svc
)
343 if (!(svc
->flags
& IP_VS_SVC_F_HASHED
)) {
344 pr_err("%s(): request for unhash flagged, called from %pS\n",
345 __func__
, __builtin_return_address(0));
349 if (svc
->fwmark
== 0) {
350 /* Remove it from the svc_table table */
351 hlist_del_rcu(&svc
->s_list
);
353 /* Remove it from the svc_fwm_table table */
354 hlist_del_rcu(&svc
->f_list
);
357 svc
->flags
&= ~IP_VS_SVC_F_HASHED
;
358 atomic_dec(&svc
->refcnt
);
364 * Get service by {netns, proto,addr,port} in the service table.
366 static inline struct ip_vs_service
*
367 __ip_vs_service_find(struct netns_ipvs
*ipvs
, int af
, __u16 protocol
,
368 const union nf_inet_addr
*vaddr
, __be16 vport
)
371 struct ip_vs_service
*svc
;
373 /* Check for "full" addressed entries */
374 hash
= ip_vs_svc_hashkey(ipvs
, af
, protocol
, vaddr
, vport
);
376 hlist_for_each_entry_rcu(svc
, &ip_vs_svc_table
[hash
], s_list
) {
378 && ip_vs_addr_equal(af
, &svc
->addr
, vaddr
)
379 && (svc
->port
== vport
)
380 && (svc
->protocol
== protocol
)
381 && (svc
->ipvs
== ipvs
)) {
392 * Get service by {fwmark} in the service table.
394 static inline struct ip_vs_service
*
395 __ip_vs_svc_fwm_find(struct netns_ipvs
*ipvs
, int af
, __u32 fwmark
)
398 struct ip_vs_service
*svc
;
400 /* Check for fwmark addressed entries */
401 hash
= ip_vs_svc_fwm_hashkey(ipvs
, fwmark
);
403 hlist_for_each_entry_rcu(svc
, &ip_vs_svc_fwm_table
[hash
], f_list
) {
404 if (svc
->fwmark
== fwmark
&& svc
->af
== af
405 && (svc
->ipvs
== ipvs
)) {
414 /* Find service, called under RCU lock */
415 struct ip_vs_service
*
416 ip_vs_service_find(struct netns_ipvs
*ipvs
, int af
, __u32 fwmark
, __u16 protocol
,
417 const union nf_inet_addr
*vaddr
, __be16 vport
)
419 struct ip_vs_service
*svc
;
422 * Check the table hashed by fwmark first
425 svc
= __ip_vs_svc_fwm_find(ipvs
, af
, fwmark
);
431 * Check the table hashed by <protocol,addr,port>
432 * for "full" addressed entries
434 svc
= __ip_vs_service_find(ipvs
, af
, protocol
, vaddr
, vport
);
436 if (!svc
&& protocol
== IPPROTO_TCP
&&
437 atomic_read(&ipvs
->ftpsvc_counter
) &&
438 (vport
== FTPDATA
|| !inet_port_requires_bind_service(ipvs
->net
, ntohs(vport
)))) {
440 * Check if ftp service entry exists, the packet
441 * might belong to FTP data connections.
443 svc
= __ip_vs_service_find(ipvs
, af
, protocol
, vaddr
, FTPPORT
);
447 && atomic_read(&ipvs
->nullsvc_counter
)) {
449 * Check if the catch-all port (port zero) exists
451 svc
= __ip_vs_service_find(ipvs
, af
, protocol
, vaddr
, 0);
455 IP_VS_DBG_BUF(9, "lookup service: fwm %u %s %s:%u %s\n",
456 fwmark
, ip_vs_proto_name(protocol
),
457 IP_VS_DBG_ADDR(af
, vaddr
), ntohs(vport
),
458 svc
? "hit" : "not hit");
465 __ip_vs_bind_svc(struct ip_vs_dest
*dest
, struct ip_vs_service
*svc
)
467 atomic_inc(&svc
->refcnt
);
468 rcu_assign_pointer(dest
->svc
, svc
);
471 static void ip_vs_service_free(struct ip_vs_service
*svc
)
473 free_percpu(svc
->stats
.cpustats
);
477 static void ip_vs_service_rcu_free(struct rcu_head
*head
)
479 struct ip_vs_service
*svc
;
481 svc
= container_of(head
, struct ip_vs_service
, rcu_head
);
482 ip_vs_service_free(svc
);
485 static void __ip_vs_svc_put(struct ip_vs_service
*svc
, bool do_delay
)
487 if (atomic_dec_and_test(&svc
->refcnt
)) {
488 IP_VS_DBG_BUF(3, "Removing service %u/%s:%u\n",
490 IP_VS_DBG_ADDR(svc
->af
, &svc
->addr
),
493 call_rcu(&svc
->rcu_head
, ip_vs_service_rcu_free
);
495 ip_vs_service_free(svc
);
501 * Returns hash value for real service
503 static inline unsigned int ip_vs_rs_hashkey(int af
,
504 const union nf_inet_addr
*addr
,
507 unsigned int porth
= ntohs(port
);
508 __be32 addr_fold
= addr
->ip
;
510 #ifdef CONFIG_IP_VS_IPV6
512 addr_fold
= addr
->ip6
[0]^addr
->ip6
[1]^
513 addr
->ip6
[2]^addr
->ip6
[3];
516 return (ntohl(addr_fold
)^(porth
>>IP_VS_RTAB_BITS
)^porth
)
520 /* Hash ip_vs_dest in rs_table by <proto,addr,port>. */
521 static void ip_vs_rs_hash(struct netns_ipvs
*ipvs
, struct ip_vs_dest
*dest
)
526 if (dest
->in_rs_table
)
529 switch (IP_VS_DFWD_METHOD(dest
)) {
530 case IP_VS_CONN_F_MASQ
:
533 case IP_VS_CONN_F_TUNNEL
:
534 switch (dest
->tun_type
) {
535 case IP_VS_CONN_F_TUNNEL_TYPE_GUE
:
536 port
= dest
->tun_port
;
538 case IP_VS_CONN_F_TUNNEL_TYPE_IPIP
:
539 case IP_VS_CONN_F_TUNNEL_TYPE_GRE
:
551 * Hash by proto,addr,port,
552 * which are the parameters of the real service.
554 hash
= ip_vs_rs_hashkey(dest
->af
, &dest
->addr
, port
);
556 hlist_add_head_rcu(&dest
->d_list
, &ipvs
->rs_table
[hash
]);
557 dest
->in_rs_table
= 1;
560 /* Unhash ip_vs_dest from rs_table. */
561 static void ip_vs_rs_unhash(struct ip_vs_dest
*dest
)
564 * Remove it from the rs_table table.
566 if (dest
->in_rs_table
) {
567 hlist_del_rcu(&dest
->d_list
);
568 dest
->in_rs_table
= 0;
572 /* Check if real service by <proto,addr,port> is present */
573 bool ip_vs_has_real_service(struct netns_ipvs
*ipvs
, int af
, __u16 protocol
,
574 const union nf_inet_addr
*daddr
, __be16 dport
)
577 struct ip_vs_dest
*dest
;
579 /* Check for "full" addressed entries */
580 hash
= ip_vs_rs_hashkey(af
, daddr
, dport
);
582 hlist_for_each_entry_rcu(dest
, &ipvs
->rs_table
[hash
], d_list
) {
583 if (dest
->port
== dport
&&
585 ip_vs_addr_equal(af
, &dest
->addr
, daddr
) &&
586 (dest
->protocol
== protocol
|| dest
->vfwmark
) &&
587 IP_VS_DFWD_METHOD(dest
) == IP_VS_CONN_F_MASQ
) {
596 /* Find real service record by <proto,addr,port>.
597 * In case of multiple records with the same <proto,addr,port>, only
598 * the first found record is returned.
600 * To be called under RCU lock.
602 struct ip_vs_dest
*ip_vs_find_real_service(struct netns_ipvs
*ipvs
, int af
,
604 const union nf_inet_addr
*daddr
,
608 struct ip_vs_dest
*dest
;
610 /* Check for "full" addressed entries */
611 hash
= ip_vs_rs_hashkey(af
, daddr
, dport
);
613 hlist_for_each_entry_rcu(dest
, &ipvs
->rs_table
[hash
], d_list
) {
614 if (dest
->port
== dport
&&
616 ip_vs_addr_equal(af
, &dest
->addr
, daddr
) &&
617 (dest
->protocol
== protocol
|| dest
->vfwmark
) &&
618 IP_VS_DFWD_METHOD(dest
) == IP_VS_CONN_F_MASQ
) {
627 /* Find real service record by <af,addr,tun_port>.
628 * In case of multiple records with the same <af,addr,tun_port>, only
629 * the first found record is returned.
631 * To be called under RCU lock.
633 struct ip_vs_dest
*ip_vs_find_tunnel(struct netns_ipvs
*ipvs
, int af
,
634 const union nf_inet_addr
*daddr
,
637 struct ip_vs_dest
*dest
;
640 /* Check for "full" addressed entries */
641 hash
= ip_vs_rs_hashkey(af
, daddr
, tun_port
);
643 hlist_for_each_entry_rcu(dest
, &ipvs
->rs_table
[hash
], d_list
) {
644 if (dest
->tun_port
== tun_port
&&
646 ip_vs_addr_equal(af
, &dest
->addr
, daddr
) &&
647 IP_VS_DFWD_METHOD(dest
) == IP_VS_CONN_F_TUNNEL
) {
656 /* Lookup destination by {addr,port} in the given service
657 * Called under RCU lock.
659 static struct ip_vs_dest
*
660 ip_vs_lookup_dest(struct ip_vs_service
*svc
, int dest_af
,
661 const union nf_inet_addr
*daddr
, __be16 dport
)
663 struct ip_vs_dest
*dest
;
666 * Find the destination for the given service
668 list_for_each_entry_rcu(dest
, &svc
->destinations
, n_list
) {
669 if ((dest
->af
== dest_af
) &&
670 ip_vs_addr_equal(dest_af
, &dest
->addr
, daddr
) &&
671 (dest
->port
== dport
)) {
681 * Find destination by {daddr,dport,vaddr,protocol}
682 * Created to be used in ip_vs_process_message() in
683 * the backup synchronization daemon. It finds the
684 * destination to be bound to the received connection
686 * Called under RCU lock, no refcnt is returned.
688 struct ip_vs_dest
*ip_vs_find_dest(struct netns_ipvs
*ipvs
, int svc_af
, int dest_af
,
689 const union nf_inet_addr
*daddr
,
691 const union nf_inet_addr
*vaddr
,
692 __be16 vport
, __u16 protocol
, __u32 fwmark
,
695 struct ip_vs_dest
*dest
;
696 struct ip_vs_service
*svc
;
699 svc
= ip_vs_service_find(ipvs
, svc_af
, fwmark
, protocol
, vaddr
, vport
);
702 if (fwmark
&& (flags
& IP_VS_CONN_F_FWD_MASK
) != IP_VS_CONN_F_MASQ
)
704 dest
= ip_vs_lookup_dest(svc
, dest_af
, daddr
, port
);
706 dest
= ip_vs_lookup_dest(svc
, dest_af
, daddr
, port
^ dport
);
710 void ip_vs_dest_dst_rcu_free(struct rcu_head
*head
)
712 struct ip_vs_dest_dst
*dest_dst
= container_of(head
,
713 struct ip_vs_dest_dst
,
716 dst_release(dest_dst
->dst_cache
);
720 /* Release dest_dst and dst_cache for dest in user context */
721 static void __ip_vs_dst_cache_reset(struct ip_vs_dest
*dest
)
723 struct ip_vs_dest_dst
*old
;
725 old
= rcu_dereference_protected(dest
->dest_dst
, 1);
727 RCU_INIT_POINTER(dest
->dest_dst
, NULL
);
728 call_rcu(&old
->rcu_head
, ip_vs_dest_dst_rcu_free
);
733 * Lookup dest by {svc,addr,port} in the destination trash.
734 * The destination trash is used to hold the destinations that are removed
735 * from the service table but are still referenced by some conn entries.
736 * The reason to add the destination trash is when the dest is temporary
737 * down (either by administrator or by monitor program), the dest can be
738 * picked back from the trash, the remaining connections to the dest can
739 * continue, and the counting information of the dest is also useful for
742 static struct ip_vs_dest
*
743 ip_vs_trash_get_dest(struct ip_vs_service
*svc
, int dest_af
,
744 const union nf_inet_addr
*daddr
, __be16 dport
)
746 struct ip_vs_dest
*dest
;
747 struct netns_ipvs
*ipvs
= svc
->ipvs
;
750 * Find the destination in trash
752 spin_lock_bh(&ipvs
->dest_trash_lock
);
753 list_for_each_entry(dest
, &ipvs
->dest_trash
, t_list
) {
754 IP_VS_DBG_BUF(3, "Destination %u/%s:%u still in trash, "
757 IP_VS_DBG_ADDR(dest
->af
, &dest
->addr
),
759 refcount_read(&dest
->refcnt
));
760 if (dest
->af
== dest_af
&&
761 ip_vs_addr_equal(dest_af
, &dest
->addr
, daddr
) &&
762 dest
->port
== dport
&&
763 dest
->vfwmark
== svc
->fwmark
&&
764 dest
->protocol
== svc
->protocol
&&
766 (ip_vs_addr_equal(svc
->af
, &dest
->vaddr
, &svc
->addr
) &&
767 dest
->vport
== svc
->port
))) {
769 list_del(&dest
->t_list
);
777 spin_unlock_bh(&ipvs
->dest_trash_lock
);
782 static void ip_vs_dest_free(struct ip_vs_dest
*dest
)
784 struct ip_vs_service
*svc
= rcu_dereference_protected(dest
->svc
, 1);
786 __ip_vs_dst_cache_reset(dest
);
787 __ip_vs_svc_put(svc
, false);
788 free_percpu(dest
->stats
.cpustats
);
789 ip_vs_dest_put_and_free(dest
);
793 * Clean up all the destinations in the trash
794 * Called by the ip_vs_control_cleanup()
796 * When the ip_vs_control_clearup is activated by ipvs module exit,
797 * the service tables must have been flushed and all the connections
798 * are expired, and the refcnt of each destination in the trash must
799 * be 1, so we simply release them here.
801 static void ip_vs_trash_cleanup(struct netns_ipvs
*ipvs
)
803 struct ip_vs_dest
*dest
, *nxt
;
805 del_timer_sync(&ipvs
->dest_trash_timer
);
806 /* No need to use dest_trash_lock */
807 list_for_each_entry_safe(dest
, nxt
, &ipvs
->dest_trash
, t_list
) {
808 list_del(&dest
->t_list
);
809 ip_vs_dest_free(dest
);
814 ip_vs_copy_stats(struct ip_vs_kstats
*dst
, struct ip_vs_stats
*src
)
816 #define IP_VS_SHOW_STATS_COUNTER(c) dst->c = src->kstats.c - src->kstats0.c
818 spin_lock_bh(&src
->lock
);
820 IP_VS_SHOW_STATS_COUNTER(conns
);
821 IP_VS_SHOW_STATS_COUNTER(inpkts
);
822 IP_VS_SHOW_STATS_COUNTER(outpkts
);
823 IP_VS_SHOW_STATS_COUNTER(inbytes
);
824 IP_VS_SHOW_STATS_COUNTER(outbytes
);
826 ip_vs_read_estimator(dst
, src
);
828 spin_unlock_bh(&src
->lock
);
832 ip_vs_export_stats_user(struct ip_vs_stats_user
*dst
, struct ip_vs_kstats
*src
)
834 dst
->conns
= (u32
)src
->conns
;
835 dst
->inpkts
= (u32
)src
->inpkts
;
836 dst
->outpkts
= (u32
)src
->outpkts
;
837 dst
->inbytes
= src
->inbytes
;
838 dst
->outbytes
= src
->outbytes
;
839 dst
->cps
= (u32
)src
->cps
;
840 dst
->inpps
= (u32
)src
->inpps
;
841 dst
->outpps
= (u32
)src
->outpps
;
842 dst
->inbps
= (u32
)src
->inbps
;
843 dst
->outbps
= (u32
)src
->outbps
;
847 ip_vs_zero_stats(struct ip_vs_stats
*stats
)
849 spin_lock_bh(&stats
->lock
);
851 /* get current counters as zero point, rates are zeroed */
853 #define IP_VS_ZERO_STATS_COUNTER(c) stats->kstats0.c = stats->kstats.c
855 IP_VS_ZERO_STATS_COUNTER(conns
);
856 IP_VS_ZERO_STATS_COUNTER(inpkts
);
857 IP_VS_ZERO_STATS_COUNTER(outpkts
);
858 IP_VS_ZERO_STATS_COUNTER(inbytes
);
859 IP_VS_ZERO_STATS_COUNTER(outbytes
);
861 ip_vs_zero_estimator(stats
);
863 spin_unlock_bh(&stats
->lock
);
867 * Update a destination in the given service
870 __ip_vs_update_dest(struct ip_vs_service
*svc
, struct ip_vs_dest
*dest
,
871 struct ip_vs_dest_user_kern
*udest
, int add
)
873 struct netns_ipvs
*ipvs
= svc
->ipvs
;
874 struct ip_vs_service
*old_svc
;
875 struct ip_vs_scheduler
*sched
;
878 /* We cannot modify an address and change the address family */
879 BUG_ON(!add
&& udest
->af
!= dest
->af
);
881 if (add
&& udest
->af
!= svc
->af
)
882 ipvs
->mixed_address_family_dests
++;
884 /* keep the last_weight with latest non-0 weight */
885 if (add
|| udest
->weight
!= 0)
886 atomic_set(&dest
->last_weight
, udest
->weight
);
888 /* set the weight and the flags */
889 atomic_set(&dest
->weight
, udest
->weight
);
890 conn_flags
= udest
->conn_flags
& IP_VS_CONN_F_DEST_MASK
;
891 conn_flags
|= IP_VS_CONN_F_INACTIVE
;
893 /* Need to rehash? */
894 if ((udest
->conn_flags
& IP_VS_CONN_F_FWD_MASK
) !=
895 IP_VS_DFWD_METHOD(dest
) ||
896 udest
->tun_type
!= dest
->tun_type
||
897 udest
->tun_port
!= dest
->tun_port
)
898 ip_vs_rs_unhash(dest
);
900 /* set the tunnel info */
901 dest
->tun_type
= udest
->tun_type
;
902 dest
->tun_port
= udest
->tun_port
;
903 dest
->tun_flags
= udest
->tun_flags
;
905 /* set the IP_VS_CONN_F_NOOUTPUT flag if not masquerading/NAT */
906 if ((conn_flags
& IP_VS_CONN_F_FWD_MASK
) != IP_VS_CONN_F_MASQ
) {
907 conn_flags
|= IP_VS_CONN_F_NOOUTPUT
;
909 /* FTP-NAT requires conntrack for mangling */
910 if (svc
->port
== FTPPORT
)
911 ip_vs_register_conntrack(svc
);
913 atomic_set(&dest
->conn_flags
, conn_flags
);
914 /* Put the real service in rs_table if not present. */
915 ip_vs_rs_hash(ipvs
, dest
);
917 /* bind the service */
918 old_svc
= rcu_dereference_protected(dest
->svc
, 1);
920 __ip_vs_bind_svc(dest
, svc
);
922 if (old_svc
!= svc
) {
923 ip_vs_zero_stats(&dest
->stats
);
924 __ip_vs_bind_svc(dest
, svc
);
925 __ip_vs_svc_put(old_svc
, true);
929 /* set the dest status flags */
930 dest
->flags
|= IP_VS_DEST_F_AVAILABLE
;
932 if (udest
->u_threshold
== 0 || udest
->u_threshold
> dest
->u_threshold
)
933 dest
->flags
&= ~IP_VS_DEST_F_OVERLOAD
;
934 dest
->u_threshold
= udest
->u_threshold
;
935 dest
->l_threshold
= udest
->l_threshold
;
937 dest
->af
= udest
->af
;
939 spin_lock_bh(&dest
->dst_lock
);
940 __ip_vs_dst_cache_reset(dest
);
941 spin_unlock_bh(&dest
->dst_lock
);
944 ip_vs_start_estimator(svc
->ipvs
, &dest
->stats
);
945 list_add_rcu(&dest
->n_list
, &svc
->destinations
);
947 sched
= rcu_dereference_protected(svc
->scheduler
, 1);
948 if (sched
&& sched
->add_dest
)
949 sched
->add_dest(svc
, dest
);
951 sched
= rcu_dereference_protected(svc
->scheduler
, 1);
952 if (sched
&& sched
->upd_dest
)
953 sched
->upd_dest(svc
, dest
);
959 * Create a destination for the given service
962 ip_vs_new_dest(struct ip_vs_service
*svc
, struct ip_vs_dest_user_kern
*udest
,
963 struct ip_vs_dest
**dest_p
)
965 struct ip_vs_dest
*dest
;
966 unsigned int atype
, i
;
970 #ifdef CONFIG_IP_VS_IPV6
971 if (udest
->af
== AF_INET6
) {
974 atype
= ipv6_addr_type(&udest
->addr
.in6
);
975 if ((!(atype
& IPV6_ADDR_UNICAST
) ||
976 atype
& IPV6_ADDR_LINKLOCAL
) &&
977 !__ip_vs_addr_is_local_v6(svc
->ipvs
->net
, &udest
->addr
.in6
))
980 ret
= nf_defrag_ipv6_enable(svc
->ipvs
->net
);
986 atype
= inet_addr_type(svc
->ipvs
->net
, udest
->addr
.ip
);
987 if (atype
!= RTN_LOCAL
&& atype
!= RTN_UNICAST
)
991 dest
= kzalloc(sizeof(struct ip_vs_dest
), GFP_KERNEL
);
995 dest
->stats
.cpustats
= alloc_percpu(struct ip_vs_cpu_stats
);
996 if (!dest
->stats
.cpustats
)
999 for_each_possible_cpu(i
) {
1000 struct ip_vs_cpu_stats
*ip_vs_dest_stats
;
1001 ip_vs_dest_stats
= per_cpu_ptr(dest
->stats
.cpustats
, i
);
1002 u64_stats_init(&ip_vs_dest_stats
->syncp
);
1005 dest
->af
= udest
->af
;
1006 dest
->protocol
= svc
->protocol
;
1007 dest
->vaddr
= svc
->addr
;
1008 dest
->vport
= svc
->port
;
1009 dest
->vfwmark
= svc
->fwmark
;
1010 ip_vs_addr_copy(udest
->af
, &dest
->addr
, &udest
->addr
);
1011 dest
->port
= udest
->port
;
1013 atomic_set(&dest
->activeconns
, 0);
1014 atomic_set(&dest
->inactconns
, 0);
1015 atomic_set(&dest
->persistconns
, 0);
1016 refcount_set(&dest
->refcnt
, 1);
1018 INIT_HLIST_NODE(&dest
->d_list
);
1019 spin_lock_init(&dest
->dst_lock
);
1020 spin_lock_init(&dest
->stats
.lock
);
1021 __ip_vs_update_dest(svc
, dest
, udest
, 1);
1035 * Add a destination into an existing service
1038 ip_vs_add_dest(struct ip_vs_service
*svc
, struct ip_vs_dest_user_kern
*udest
)
1040 struct ip_vs_dest
*dest
;
1041 union nf_inet_addr daddr
;
1042 __be16 dport
= udest
->port
;
1047 if (udest
->weight
< 0) {
1048 pr_err("%s(): server weight less than zero\n", __func__
);
1052 if (udest
->l_threshold
> udest
->u_threshold
) {
1053 pr_err("%s(): lower threshold is higher than upper threshold\n",
1058 if (udest
->tun_type
== IP_VS_CONN_F_TUNNEL_TYPE_GUE
) {
1059 if (udest
->tun_port
== 0) {
1060 pr_err("%s(): tunnel port is zero\n", __func__
);
1065 ip_vs_addr_copy(udest
->af
, &daddr
, &udest
->addr
);
1067 /* We use function that requires RCU lock */
1069 dest
= ip_vs_lookup_dest(svc
, udest
->af
, &daddr
, dport
);
1073 IP_VS_DBG(1, "%s(): dest already exists\n", __func__
);
1078 * Check if the dest already exists in the trash and
1079 * is from the same service
1081 dest
= ip_vs_trash_get_dest(svc
, udest
->af
, &daddr
, dport
);
1084 IP_VS_DBG_BUF(3, "Get destination %s:%u from trash, "
1085 "dest->refcnt=%d, service %u/%s:%u\n",
1086 IP_VS_DBG_ADDR(udest
->af
, &daddr
), ntohs(dport
),
1087 refcount_read(&dest
->refcnt
),
1089 IP_VS_DBG_ADDR(svc
->af
, &dest
->vaddr
),
1090 ntohs(dest
->vport
));
1092 __ip_vs_update_dest(svc
, dest
, udest
, 1);
1096 * Allocate and initialize the dest structure
1098 ret
= ip_vs_new_dest(svc
, udest
, &dest
);
1107 * Edit a destination in the given service
1110 ip_vs_edit_dest(struct ip_vs_service
*svc
, struct ip_vs_dest_user_kern
*udest
)
1112 struct ip_vs_dest
*dest
;
1113 union nf_inet_addr daddr
;
1114 __be16 dport
= udest
->port
;
1118 if (udest
->weight
< 0) {
1119 pr_err("%s(): server weight less than zero\n", __func__
);
1123 if (udest
->l_threshold
> udest
->u_threshold
) {
1124 pr_err("%s(): lower threshold is higher than upper threshold\n",
1129 if (udest
->tun_type
== IP_VS_CONN_F_TUNNEL_TYPE_GUE
) {
1130 if (udest
->tun_port
== 0) {
1131 pr_err("%s(): tunnel port is zero\n", __func__
);
1136 ip_vs_addr_copy(udest
->af
, &daddr
, &udest
->addr
);
1138 /* We use function that requires RCU lock */
1140 dest
= ip_vs_lookup_dest(svc
, udest
->af
, &daddr
, dport
);
1144 IP_VS_DBG(1, "%s(): dest doesn't exist\n", __func__
);
1148 __ip_vs_update_dest(svc
, dest
, udest
, 0);
1155 * Delete a destination (must be already unlinked from the service)
1157 static void __ip_vs_del_dest(struct netns_ipvs
*ipvs
, struct ip_vs_dest
*dest
,
1160 ip_vs_stop_estimator(ipvs
, &dest
->stats
);
1163 * Remove it from the d-linked list with the real services.
1165 ip_vs_rs_unhash(dest
);
1167 spin_lock_bh(&ipvs
->dest_trash_lock
);
1168 IP_VS_DBG_BUF(3, "Moving dest %s:%u into trash, dest->refcnt=%d\n",
1169 IP_VS_DBG_ADDR(dest
->af
, &dest
->addr
), ntohs(dest
->port
),
1170 refcount_read(&dest
->refcnt
));
1171 if (list_empty(&ipvs
->dest_trash
) && !cleanup
)
1172 mod_timer(&ipvs
->dest_trash_timer
,
1173 jiffies
+ (IP_VS_DEST_TRASH_PERIOD
>> 1));
1174 /* dest lives in trash with reference */
1175 list_add(&dest
->t_list
, &ipvs
->dest_trash
);
1176 dest
->idle_start
= 0;
1177 spin_unlock_bh(&ipvs
->dest_trash_lock
);
1179 /* Queue up delayed work to expire all no destination connections.
1180 * No-op when CONFIG_SYSCTL is disabled.
1183 ip_vs_enqueue_expire_nodest_conns(ipvs
);
1188 * Unlink a destination from the given service
1190 static void __ip_vs_unlink_dest(struct ip_vs_service
*svc
,
1191 struct ip_vs_dest
*dest
,
1194 dest
->flags
&= ~IP_VS_DEST_F_AVAILABLE
;
1197 * Remove it from the d-linked destination list.
1199 list_del_rcu(&dest
->n_list
);
1202 if (dest
->af
!= svc
->af
)
1203 svc
->ipvs
->mixed_address_family_dests
--;
1206 struct ip_vs_scheduler
*sched
;
1208 sched
= rcu_dereference_protected(svc
->scheduler
, 1);
1209 if (sched
&& sched
->del_dest
)
1210 sched
->del_dest(svc
, dest
);
1216 * Delete a destination server in the given service
1219 ip_vs_del_dest(struct ip_vs_service
*svc
, struct ip_vs_dest_user_kern
*udest
)
1221 struct ip_vs_dest
*dest
;
1222 __be16 dport
= udest
->port
;
1226 /* We use function that requires RCU lock */
1228 dest
= ip_vs_lookup_dest(svc
, udest
->af
, &udest
->addr
, dport
);
1232 IP_VS_DBG(1, "%s(): destination not found!\n", __func__
);
1237 * Unlink dest from the service
1239 __ip_vs_unlink_dest(svc
, dest
, 1);
1242 * Delete the destination
1244 __ip_vs_del_dest(svc
->ipvs
, dest
, false);
1251 static void ip_vs_dest_trash_expire(struct timer_list
*t
)
1253 struct netns_ipvs
*ipvs
= from_timer(ipvs
, t
, dest_trash_timer
);
1254 struct ip_vs_dest
*dest
, *next
;
1255 unsigned long now
= jiffies
;
1257 spin_lock(&ipvs
->dest_trash_lock
);
1258 list_for_each_entry_safe(dest
, next
, &ipvs
->dest_trash
, t_list
) {
1259 if (refcount_read(&dest
->refcnt
) > 1)
1261 if (dest
->idle_start
) {
1262 if (time_before(now
, dest
->idle_start
+
1263 IP_VS_DEST_TRASH_PERIOD
))
1266 dest
->idle_start
= max(1UL, now
);
1269 IP_VS_DBG_BUF(3, "Removing destination %u/%s:%u from trash\n",
1271 IP_VS_DBG_ADDR(dest
->af
, &dest
->addr
),
1273 list_del(&dest
->t_list
);
1274 ip_vs_dest_free(dest
);
1276 if (!list_empty(&ipvs
->dest_trash
))
1277 mod_timer(&ipvs
->dest_trash_timer
,
1278 jiffies
+ (IP_VS_DEST_TRASH_PERIOD
>> 1));
1279 spin_unlock(&ipvs
->dest_trash_lock
);
1283 * Add a service into the service hash table
1286 ip_vs_add_service(struct netns_ipvs
*ipvs
, struct ip_vs_service_user_kern
*u
,
1287 struct ip_vs_service
**svc_p
)
1290 struct ip_vs_scheduler
*sched
= NULL
;
1291 struct ip_vs_pe
*pe
= NULL
;
1292 struct ip_vs_service
*svc
= NULL
;
1295 /* increase the module use count */
1296 if (!ip_vs_use_count_inc())
1297 return -ENOPROTOOPT
;
1299 /* Lookup the scheduler by 'u->sched_name' */
1300 if (strcmp(u
->sched_name
, "none")) {
1301 sched
= ip_vs_scheduler_get(u
->sched_name
);
1303 pr_info("Scheduler module ip_vs_%s not found\n",
1310 if (u
->pe_name
&& *u
->pe_name
) {
1311 pe
= ip_vs_pe_getbyname(u
->pe_name
);
1313 pr_info("persistence engine module ip_vs_pe_%s "
1314 "not found\n", u
->pe_name
);
1320 #ifdef CONFIG_IP_VS_IPV6
1321 if (u
->af
== AF_INET6
) {
1322 __u32 plen
= (__force __u32
) u
->netmask
;
1324 if (plen
< 1 || plen
> 128) {
1329 ret
= nf_defrag_ipv6_enable(ipvs
->net
);
1335 if ((u
->af
== AF_INET
&& !ipvs
->num_services
) ||
1336 (u
->af
== AF_INET6
&& !ipvs
->num_services6
)) {
1337 ret
= ip_vs_register_hooks(ipvs
, u
->af
);
1343 svc
= kzalloc(sizeof(struct ip_vs_service
), GFP_KERNEL
);
1345 IP_VS_DBG(1, "%s(): no memory\n", __func__
);
1349 svc
->stats
.cpustats
= alloc_percpu(struct ip_vs_cpu_stats
);
1350 if (!svc
->stats
.cpustats
) {
1355 for_each_possible_cpu(i
) {
1356 struct ip_vs_cpu_stats
*ip_vs_stats
;
1357 ip_vs_stats
= per_cpu_ptr(svc
->stats
.cpustats
, i
);
1358 u64_stats_init(&ip_vs_stats
->syncp
);
1362 /* I'm the first user of the service */
1363 atomic_set(&svc
->refcnt
, 0);
1366 svc
->protocol
= u
->protocol
;
1367 ip_vs_addr_copy(svc
->af
, &svc
->addr
, &u
->addr
);
1368 svc
->port
= u
->port
;
1369 svc
->fwmark
= u
->fwmark
;
1370 svc
->flags
= u
->flags
;
1371 svc
->timeout
= u
->timeout
* HZ
;
1372 svc
->netmask
= u
->netmask
;
1375 INIT_LIST_HEAD(&svc
->destinations
);
1376 spin_lock_init(&svc
->sched_lock
);
1377 spin_lock_init(&svc
->stats
.lock
);
1379 /* Bind the scheduler */
1381 ret
= ip_vs_bind_scheduler(svc
, sched
);
1387 /* Bind the ct retriever */
1388 RCU_INIT_POINTER(svc
->pe
, pe
);
1391 /* Update the virtual service counters */
1392 if (svc
->port
== FTPPORT
)
1393 atomic_inc(&ipvs
->ftpsvc_counter
);
1394 else if (svc
->port
== 0)
1395 atomic_inc(&ipvs
->nullsvc_counter
);
1396 if (svc
->pe
&& svc
->pe
->conn_out
)
1397 atomic_inc(&ipvs
->conn_out_counter
);
1399 ip_vs_start_estimator(ipvs
, &svc
->stats
);
1401 /* Count only IPv4 services for old get/setsockopt interface */
1402 if (svc
->af
== AF_INET
)
1403 ipvs
->num_services
++;
1404 else if (svc
->af
== AF_INET6
)
1405 ipvs
->num_services6
++;
1407 /* Hash the service into the service table */
1408 ip_vs_svc_hash(svc
);
1411 /* Now there is a service - full throttle */
1418 ip_vs_unregister_hooks(ipvs
, u
->af
);
1420 ip_vs_unbind_scheduler(svc
, sched
);
1421 ip_vs_service_free(svc
);
1423 ip_vs_scheduler_put(sched
);
1426 /* decrease the module use count */
1427 ip_vs_use_count_dec();
1434 * Edit a service and bind it with a new scheduler
1437 ip_vs_edit_service(struct ip_vs_service
*svc
, struct ip_vs_service_user_kern
*u
)
1439 struct ip_vs_scheduler
*sched
= NULL
, *old_sched
;
1440 struct ip_vs_pe
*pe
= NULL
, *old_pe
= NULL
;
1442 bool new_pe_conn_out
, old_pe_conn_out
;
1445 * Lookup the scheduler, by 'u->sched_name'
1447 if (strcmp(u
->sched_name
, "none")) {
1448 sched
= ip_vs_scheduler_get(u
->sched_name
);
1450 pr_info("Scheduler module ip_vs_%s not found\n",
1457 if (u
->pe_name
&& *u
->pe_name
) {
1458 pe
= ip_vs_pe_getbyname(u
->pe_name
);
1460 pr_info("persistence engine module ip_vs_pe_%s "
1461 "not found\n", u
->pe_name
);
1468 #ifdef CONFIG_IP_VS_IPV6
1469 if (u
->af
== AF_INET6
) {
1470 __u32 plen
= (__force __u32
) u
->netmask
;
1472 if (plen
< 1 || plen
> 128) {
1479 old_sched
= rcu_dereference_protected(svc
->scheduler
, 1);
1480 if (sched
!= old_sched
) {
1482 ip_vs_unbind_scheduler(svc
, old_sched
);
1483 RCU_INIT_POINTER(svc
->scheduler
, NULL
);
1484 /* Wait all svc->sched_data users */
1487 /* Bind the new scheduler */
1489 ret
= ip_vs_bind_scheduler(svc
, sched
);
1491 ip_vs_scheduler_put(sched
);
1498 * Set the flags and timeout value
1500 svc
->flags
= u
->flags
| IP_VS_SVC_F_HASHED
;
1501 svc
->timeout
= u
->timeout
* HZ
;
1502 svc
->netmask
= u
->netmask
;
1504 old_pe
= rcu_dereference_protected(svc
->pe
, 1);
1506 rcu_assign_pointer(svc
->pe
, pe
);
1507 /* check for optional methods in new pe */
1508 new_pe_conn_out
= (pe
&& pe
->conn_out
) ? true : false;
1509 old_pe_conn_out
= (old_pe
&& old_pe
->conn_out
) ? true : false;
1510 if (new_pe_conn_out
&& !old_pe_conn_out
)
1511 atomic_inc(&svc
->ipvs
->conn_out_counter
);
1512 if (old_pe_conn_out
&& !new_pe_conn_out
)
1513 atomic_dec(&svc
->ipvs
->conn_out_counter
);
1517 ip_vs_scheduler_put(old_sched
);
1518 ip_vs_pe_put(old_pe
);
1523 * Delete a service from the service list
1524 * - The service must be unlinked, unlocked and not referenced!
1525 * - We are called under _bh lock
1527 static void __ip_vs_del_service(struct ip_vs_service
*svc
, bool cleanup
)
1529 struct ip_vs_dest
*dest
, *nxt
;
1530 struct ip_vs_scheduler
*old_sched
;
1531 struct ip_vs_pe
*old_pe
;
1532 struct netns_ipvs
*ipvs
= svc
->ipvs
;
1534 if (svc
->af
== AF_INET
) {
1535 ipvs
->num_services
--;
1536 if (!ipvs
->num_services
)
1537 ip_vs_unregister_hooks(ipvs
, svc
->af
);
1538 } else if (svc
->af
== AF_INET6
) {
1539 ipvs
->num_services6
--;
1540 if (!ipvs
->num_services6
)
1541 ip_vs_unregister_hooks(ipvs
, svc
->af
);
1544 ip_vs_stop_estimator(svc
->ipvs
, &svc
->stats
);
1546 /* Unbind scheduler */
1547 old_sched
= rcu_dereference_protected(svc
->scheduler
, 1);
1548 ip_vs_unbind_scheduler(svc
, old_sched
);
1549 ip_vs_scheduler_put(old_sched
);
1551 /* Unbind persistence engine, keep svc->pe */
1552 old_pe
= rcu_dereference_protected(svc
->pe
, 1);
1553 if (old_pe
&& old_pe
->conn_out
)
1554 atomic_dec(&ipvs
->conn_out_counter
);
1555 ip_vs_pe_put(old_pe
);
1558 * Unlink the whole destination list
1560 list_for_each_entry_safe(dest
, nxt
, &svc
->destinations
, n_list
) {
1561 __ip_vs_unlink_dest(svc
, dest
, 0);
1562 __ip_vs_del_dest(svc
->ipvs
, dest
, cleanup
);
1566 * Update the virtual service counters
1568 if (svc
->port
== FTPPORT
)
1569 atomic_dec(&ipvs
->ftpsvc_counter
);
1570 else if (svc
->port
== 0)
1571 atomic_dec(&ipvs
->nullsvc_counter
);
1574 * Free the service if nobody refers to it
1576 __ip_vs_svc_put(svc
, true);
1578 /* decrease the module use count */
1579 ip_vs_use_count_dec();
1583 * Unlink a service from list and try to delete it if its refcnt reached 0
1585 static void ip_vs_unlink_service(struct ip_vs_service
*svc
, bool cleanup
)
1587 ip_vs_unregister_conntrack(svc
);
1588 /* Hold svc to avoid double release from dest_trash */
1589 atomic_inc(&svc
->refcnt
);
1591 * Unhash it from the service table
1593 ip_vs_svc_unhash(svc
);
1595 __ip_vs_del_service(svc
, cleanup
);
1599 * Delete a service from the service list
1601 static int ip_vs_del_service(struct ip_vs_service
*svc
)
1605 ip_vs_unlink_service(svc
, false);
1612 * Flush all the virtual services
1614 static int ip_vs_flush(struct netns_ipvs
*ipvs
, bool cleanup
)
1617 struct ip_vs_service
*svc
;
1618 struct hlist_node
*n
;
1621 * Flush the service table hashed by <netns,protocol,addr,port>
1623 for(idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1624 hlist_for_each_entry_safe(svc
, n
, &ip_vs_svc_table
[idx
],
1626 if (svc
->ipvs
== ipvs
)
1627 ip_vs_unlink_service(svc
, cleanup
);
1632 * Flush the service table hashed by fwmark
1634 for(idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1635 hlist_for_each_entry_safe(svc
, n
, &ip_vs_svc_fwm_table
[idx
],
1637 if (svc
->ipvs
== ipvs
)
1638 ip_vs_unlink_service(svc
, cleanup
);
1646 * Delete service by {netns} in the service table.
1647 * Called by __ip_vs_batch_cleanup()
1649 void ip_vs_service_nets_cleanup(struct list_head
*net_list
)
1651 struct netns_ipvs
*ipvs
;
1655 /* Check for "full" addressed entries */
1656 mutex_lock(&__ip_vs_mutex
);
1657 list_for_each_entry(net
, net_list
, exit_list
) {
1658 ipvs
= net_ipvs(net
);
1659 ip_vs_flush(ipvs
, true);
1661 mutex_unlock(&__ip_vs_mutex
);
1665 /* Put all references for device (dst_cache) */
1667 ip_vs_forget_dev(struct ip_vs_dest
*dest
, struct net_device
*dev
)
1669 struct ip_vs_dest_dst
*dest_dst
;
1671 spin_lock_bh(&dest
->dst_lock
);
1672 dest_dst
= rcu_dereference_protected(dest
->dest_dst
, 1);
1673 if (dest_dst
&& dest_dst
->dst_cache
->dev
== dev
) {
1674 IP_VS_DBG_BUF(3, "Reset dev:%s dest %s:%u ,dest->refcnt=%d\n",
1676 IP_VS_DBG_ADDR(dest
->af
, &dest
->addr
),
1678 refcount_read(&dest
->refcnt
));
1679 __ip_vs_dst_cache_reset(dest
);
1681 spin_unlock_bh(&dest
->dst_lock
);
1684 /* Netdev event receiver
1685 * Currently only NETDEV_DOWN is handled to release refs to cached dsts
1687 static int ip_vs_dst_event(struct notifier_block
*this, unsigned long event
,
1690 struct net_device
*dev
= netdev_notifier_info_to_dev(ptr
);
1691 struct net
*net
= dev_net(dev
);
1692 struct netns_ipvs
*ipvs
= net_ipvs(net
);
1693 struct ip_vs_service
*svc
;
1694 struct ip_vs_dest
*dest
;
1697 if (event
!= NETDEV_DOWN
|| !ipvs
)
1699 IP_VS_DBG(3, "%s() dev=%s\n", __func__
, dev
->name
);
1701 mutex_lock(&__ip_vs_mutex
);
1702 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1703 hlist_for_each_entry(svc
, &ip_vs_svc_table
[idx
], s_list
) {
1704 if (svc
->ipvs
== ipvs
) {
1705 list_for_each_entry(dest
, &svc
->destinations
,
1707 ip_vs_forget_dev(dest
, dev
);
1712 hlist_for_each_entry(svc
, &ip_vs_svc_fwm_table
[idx
], f_list
) {
1713 if (svc
->ipvs
== ipvs
) {
1714 list_for_each_entry(dest
, &svc
->destinations
,
1716 ip_vs_forget_dev(dest
, dev
);
1723 spin_lock_bh(&ipvs
->dest_trash_lock
);
1724 list_for_each_entry(dest
, &ipvs
->dest_trash
, t_list
) {
1725 ip_vs_forget_dev(dest
, dev
);
1727 spin_unlock_bh(&ipvs
->dest_trash_lock
);
1728 mutex_unlock(&__ip_vs_mutex
);
1734 * Zero counters in a service or all services
1736 static int ip_vs_zero_service(struct ip_vs_service
*svc
)
1738 struct ip_vs_dest
*dest
;
1740 list_for_each_entry(dest
, &svc
->destinations
, n_list
) {
1741 ip_vs_zero_stats(&dest
->stats
);
1743 ip_vs_zero_stats(&svc
->stats
);
1747 static int ip_vs_zero_all(struct netns_ipvs
*ipvs
)
1750 struct ip_vs_service
*svc
;
1752 for(idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1753 hlist_for_each_entry(svc
, &ip_vs_svc_table
[idx
], s_list
) {
1754 if (svc
->ipvs
== ipvs
)
1755 ip_vs_zero_service(svc
);
1759 for(idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1760 hlist_for_each_entry(svc
, &ip_vs_svc_fwm_table
[idx
], f_list
) {
1761 if (svc
->ipvs
== ipvs
)
1762 ip_vs_zero_service(svc
);
1766 ip_vs_zero_stats(&ipvs
->tot_stats
);
1770 #ifdef CONFIG_SYSCTL
1772 static int three
= 3;
1775 proc_do_defense_mode(struct ctl_table
*table
, int write
,
1776 void *buffer
, size_t *lenp
, loff_t
*ppos
)
1778 struct netns_ipvs
*ipvs
= table
->extra2
;
1779 int *valp
= table
->data
;
1783 struct ctl_table tmp
= {
1785 .maxlen
= sizeof(int),
1786 .mode
= table
->mode
,
1789 rc
= proc_dointvec(&tmp
, write
, buffer
, lenp
, ppos
);
1790 if (write
&& (*valp
!= val
)) {
1791 if (val
< 0 || val
> 3) {
1795 update_defense_level(ipvs
);
1802 proc_do_sync_threshold(struct ctl_table
*table
, int write
,
1803 void *buffer
, size_t *lenp
, loff_t
*ppos
)
1805 int *valp
= table
->data
;
1808 struct ctl_table tmp
= {
1810 .maxlen
= table
->maxlen
,
1811 .mode
= table
->mode
,
1814 memcpy(val
, valp
, sizeof(val
));
1815 rc
= proc_dointvec(&tmp
, write
, buffer
, lenp
, ppos
);
1817 if (val
[0] < 0 || val
[1] < 0 ||
1818 (val
[0] >= val
[1] && val
[1]))
1821 memcpy(valp
, val
, sizeof(val
));
1827 proc_do_sync_ports(struct ctl_table
*table
, int write
,
1828 void *buffer
, size_t *lenp
, loff_t
*ppos
)
1830 int *valp
= table
->data
;
1834 struct ctl_table tmp
= {
1836 .maxlen
= sizeof(int),
1837 .mode
= table
->mode
,
1840 rc
= proc_dointvec(&tmp
, write
, buffer
, lenp
, ppos
);
1841 if (write
&& (*valp
!= val
)) {
1842 if (val
< 1 || !is_power_of_2(val
))
1851 * IPVS sysctl table (under the /proc/sys/net/ipv4/vs/)
1852 * Do not change order or insert new entries without
1853 * align with netns init in ip_vs_control_net_init()
1856 static struct ctl_table vs_vars
[] = {
1858 .procname
= "amemthresh",
1859 .maxlen
= sizeof(int),
1861 .proc_handler
= proc_dointvec
,
1864 .procname
= "am_droprate",
1865 .maxlen
= sizeof(int),
1867 .proc_handler
= proc_dointvec
,
1870 .procname
= "drop_entry",
1871 .maxlen
= sizeof(int),
1873 .proc_handler
= proc_do_defense_mode
,
1876 .procname
= "drop_packet",
1877 .maxlen
= sizeof(int),
1879 .proc_handler
= proc_do_defense_mode
,
1881 #ifdef CONFIG_IP_VS_NFCT
1883 .procname
= "conntrack",
1884 .maxlen
= sizeof(int),
1886 .proc_handler
= &proc_dointvec
,
1890 .procname
= "secure_tcp",
1891 .maxlen
= sizeof(int),
1893 .proc_handler
= proc_do_defense_mode
,
1896 .procname
= "snat_reroute",
1897 .maxlen
= sizeof(int),
1899 .proc_handler
= &proc_dointvec
,
1902 .procname
= "sync_version",
1903 .maxlen
= sizeof(int),
1905 .proc_handler
= proc_dointvec_minmax
,
1906 .extra1
= SYSCTL_ZERO
,
1907 .extra2
= SYSCTL_ONE
,
1910 .procname
= "sync_ports",
1911 .maxlen
= sizeof(int),
1913 .proc_handler
= proc_do_sync_ports
,
1916 .procname
= "sync_persist_mode",
1917 .maxlen
= sizeof(int),
1919 .proc_handler
= proc_dointvec
,
1922 .procname
= "sync_qlen_max",
1923 .maxlen
= sizeof(unsigned long),
1925 .proc_handler
= proc_doulongvec_minmax
,
1928 .procname
= "sync_sock_size",
1929 .maxlen
= sizeof(int),
1931 .proc_handler
= proc_dointvec
,
1934 .procname
= "cache_bypass",
1935 .maxlen
= sizeof(int),
1937 .proc_handler
= proc_dointvec
,
1940 .procname
= "expire_nodest_conn",
1941 .maxlen
= sizeof(int),
1943 .proc_handler
= proc_dointvec
,
1946 .procname
= "sloppy_tcp",
1947 .maxlen
= sizeof(int),
1949 .proc_handler
= proc_dointvec
,
1952 .procname
= "sloppy_sctp",
1953 .maxlen
= sizeof(int),
1955 .proc_handler
= proc_dointvec
,
1958 .procname
= "expire_quiescent_template",
1959 .maxlen
= sizeof(int),
1961 .proc_handler
= proc_dointvec
,
1964 .procname
= "sync_threshold",
1966 sizeof(((struct netns_ipvs
*)0)->sysctl_sync_threshold
),
1968 .proc_handler
= proc_do_sync_threshold
,
1971 .procname
= "sync_refresh_period",
1972 .maxlen
= sizeof(int),
1974 .proc_handler
= proc_dointvec_jiffies
,
1977 .procname
= "sync_retries",
1978 .maxlen
= sizeof(int),
1980 .proc_handler
= proc_dointvec_minmax
,
1981 .extra1
= SYSCTL_ZERO
,
1985 .procname
= "nat_icmp_send",
1986 .maxlen
= sizeof(int),
1988 .proc_handler
= proc_dointvec
,
1991 .procname
= "pmtu_disc",
1992 .maxlen
= sizeof(int),
1994 .proc_handler
= proc_dointvec
,
1997 .procname
= "backup_only",
1998 .maxlen
= sizeof(int),
2000 .proc_handler
= proc_dointvec
,
2003 .procname
= "conn_reuse_mode",
2004 .maxlen
= sizeof(int),
2006 .proc_handler
= proc_dointvec
,
2009 .procname
= "schedule_icmp",
2010 .maxlen
= sizeof(int),
2012 .proc_handler
= proc_dointvec
,
2015 .procname
= "ignore_tunneled",
2016 .maxlen
= sizeof(int),
2018 .proc_handler
= proc_dointvec
,
2020 #ifdef CONFIG_IP_VS_DEBUG
2022 .procname
= "debug_level",
2023 .data
= &sysctl_ip_vs_debug_level
,
2024 .maxlen
= sizeof(int),
2026 .proc_handler
= proc_dointvec
,
2034 #ifdef CONFIG_PROC_FS
2037 struct seq_net_private p
; /* Do not move this, netns depends upon it*/
2038 struct hlist_head
*table
;
2043 * Write the contents of the VS rule table to a PROCfs file.
2044 * (It is kept just for backward compatibility)
2046 static inline const char *ip_vs_fwd_name(unsigned int flags
)
2048 switch (flags
& IP_VS_CONN_F_FWD_MASK
) {
2049 case IP_VS_CONN_F_LOCALNODE
:
2051 case IP_VS_CONN_F_TUNNEL
:
2053 case IP_VS_CONN_F_DROUTE
:
2061 /* Get the Nth entry in the two lists */
2062 static struct ip_vs_service
*ip_vs_info_array(struct seq_file
*seq
, loff_t pos
)
2064 struct net
*net
= seq_file_net(seq
);
2065 struct netns_ipvs
*ipvs
= net_ipvs(net
);
2066 struct ip_vs_iter
*iter
= seq
->private;
2068 struct ip_vs_service
*svc
;
2070 /* look in hash by protocol */
2071 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
2072 hlist_for_each_entry_rcu(svc
, &ip_vs_svc_table
[idx
], s_list
) {
2073 if ((svc
->ipvs
== ipvs
) && pos
-- == 0) {
2074 iter
->table
= ip_vs_svc_table
;
2081 /* keep looking in fwmark */
2082 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
2083 hlist_for_each_entry_rcu(svc
, &ip_vs_svc_fwm_table
[idx
],
2085 if ((svc
->ipvs
== ipvs
) && pos
-- == 0) {
2086 iter
->table
= ip_vs_svc_fwm_table
;
2096 static void *ip_vs_info_seq_start(struct seq_file
*seq
, loff_t
*pos
)
2100 return *pos
? ip_vs_info_array(seq
, *pos
- 1) : SEQ_START_TOKEN
;
2104 static void *ip_vs_info_seq_next(struct seq_file
*seq
, void *v
, loff_t
*pos
)
2106 struct hlist_node
*e
;
2107 struct ip_vs_iter
*iter
;
2108 struct ip_vs_service
*svc
;
2111 if (v
== SEQ_START_TOKEN
)
2112 return ip_vs_info_array(seq
,0);
2115 iter
= seq
->private;
2117 if (iter
->table
== ip_vs_svc_table
) {
2118 /* next service in table hashed by protocol */
2119 e
= rcu_dereference(hlist_next_rcu(&svc
->s_list
));
2121 return hlist_entry(e
, struct ip_vs_service
, s_list
);
2123 while (++iter
->bucket
< IP_VS_SVC_TAB_SIZE
) {
2124 hlist_for_each_entry_rcu(svc
,
2125 &ip_vs_svc_table
[iter
->bucket
],
2131 iter
->table
= ip_vs_svc_fwm_table
;
2136 /* next service in hashed by fwmark */
2137 e
= rcu_dereference(hlist_next_rcu(&svc
->f_list
));
2139 return hlist_entry(e
, struct ip_vs_service
, f_list
);
2142 while (++iter
->bucket
< IP_VS_SVC_TAB_SIZE
) {
2143 hlist_for_each_entry_rcu(svc
,
2144 &ip_vs_svc_fwm_table
[iter
->bucket
],
2152 static void ip_vs_info_seq_stop(struct seq_file
*seq
, void *v
)
2159 static int ip_vs_info_seq_show(struct seq_file
*seq
, void *v
)
2161 if (v
== SEQ_START_TOKEN
) {
2163 "IP Virtual Server version %d.%d.%d (size=%d)\n",
2164 NVERSION(IP_VS_VERSION_CODE
), ip_vs_conn_tab_size
);
2166 "Prot LocalAddress:Port Scheduler Flags\n");
2168 " -> RemoteAddress:Port Forward Weight ActiveConn InActConn\n");
2170 struct net
*net
= seq_file_net(seq
);
2171 struct netns_ipvs
*ipvs
= net_ipvs(net
);
2172 const struct ip_vs_service
*svc
= v
;
2173 const struct ip_vs_iter
*iter
= seq
->private;
2174 const struct ip_vs_dest
*dest
;
2175 struct ip_vs_scheduler
*sched
= rcu_dereference(svc
->scheduler
);
2176 char *sched_name
= sched
? sched
->name
: "none";
2178 if (svc
->ipvs
!= ipvs
)
2180 if (iter
->table
== ip_vs_svc_table
) {
2181 #ifdef CONFIG_IP_VS_IPV6
2182 if (svc
->af
== AF_INET6
)
2183 seq_printf(seq
, "%s [%pI6]:%04X %s ",
2184 ip_vs_proto_name(svc
->protocol
),
2190 seq_printf(seq
, "%s %08X:%04X %s %s ",
2191 ip_vs_proto_name(svc
->protocol
),
2192 ntohl(svc
->addr
.ip
),
2195 (svc
->flags
& IP_VS_SVC_F_ONEPACKET
)?"ops ":"");
2197 seq_printf(seq
, "FWM %08X %s %s",
2198 svc
->fwmark
, sched_name
,
2199 (svc
->flags
& IP_VS_SVC_F_ONEPACKET
)?"ops ":"");
2202 if (svc
->flags
& IP_VS_SVC_F_PERSISTENT
)
2203 seq_printf(seq
, "persistent %d %08X\n",
2205 ntohl(svc
->netmask
));
2207 seq_putc(seq
, '\n');
2209 list_for_each_entry_rcu(dest
, &svc
->destinations
, n_list
) {
2210 #ifdef CONFIG_IP_VS_IPV6
2211 if (dest
->af
== AF_INET6
)
2214 " %-7s %-6d %-10d %-10d\n",
2217 ip_vs_fwd_name(atomic_read(&dest
->conn_flags
)),
2218 atomic_read(&dest
->weight
),
2219 atomic_read(&dest
->activeconns
),
2220 atomic_read(&dest
->inactconns
));
2225 "%-7s %-6d %-10d %-10d\n",
2226 ntohl(dest
->addr
.ip
),
2228 ip_vs_fwd_name(atomic_read(&dest
->conn_flags
)),
2229 atomic_read(&dest
->weight
),
2230 atomic_read(&dest
->activeconns
),
2231 atomic_read(&dest
->inactconns
));
2238 static const struct seq_operations ip_vs_info_seq_ops
= {
2239 .start
= ip_vs_info_seq_start
,
2240 .next
= ip_vs_info_seq_next
,
2241 .stop
= ip_vs_info_seq_stop
,
2242 .show
= ip_vs_info_seq_show
,
2245 static int ip_vs_stats_show(struct seq_file
*seq
, void *v
)
2247 struct net
*net
= seq_file_single_net(seq
);
2248 struct ip_vs_kstats show
;
2250 /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */
2252 " Total Incoming Outgoing Incoming Outgoing\n");
2254 " Conns Packets Packets Bytes Bytes\n");
2256 ip_vs_copy_stats(&show
, &net_ipvs(net
)->tot_stats
);
2257 seq_printf(seq
, "%8LX %8LX %8LX %16LX %16LX\n\n",
2258 (unsigned long long)show
.conns
,
2259 (unsigned long long)show
.inpkts
,
2260 (unsigned long long)show
.outpkts
,
2261 (unsigned long long)show
.inbytes
,
2262 (unsigned long long)show
.outbytes
);
2264 /* 01234567 01234567 01234567 0123456701234567 0123456701234567*/
2266 " Conns/s Pkts/s Pkts/s Bytes/s Bytes/s\n");
2267 seq_printf(seq
, "%8LX %8LX %8LX %16LX %16LX\n",
2268 (unsigned long long)show
.cps
,
2269 (unsigned long long)show
.inpps
,
2270 (unsigned long long)show
.outpps
,
2271 (unsigned long long)show
.inbps
,
2272 (unsigned long long)show
.outbps
);
2277 static int ip_vs_stats_percpu_show(struct seq_file
*seq
, void *v
)
2279 struct net
*net
= seq_file_single_net(seq
);
2280 struct ip_vs_stats
*tot_stats
= &net_ipvs(net
)->tot_stats
;
2281 struct ip_vs_cpu_stats __percpu
*cpustats
= tot_stats
->cpustats
;
2282 struct ip_vs_kstats kstats
;
2285 /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */
2287 " Total Incoming Outgoing Incoming Outgoing\n");
2289 "CPU Conns Packets Packets Bytes Bytes\n");
2291 for_each_possible_cpu(i
) {
2292 struct ip_vs_cpu_stats
*u
= per_cpu_ptr(cpustats
, i
);
2294 u64 conns
, inpkts
, outpkts
, inbytes
, outbytes
;
2297 start
= u64_stats_fetch_begin_irq(&u
->syncp
);
2298 conns
= u
->cnt
.conns
;
2299 inpkts
= u
->cnt
.inpkts
;
2300 outpkts
= u
->cnt
.outpkts
;
2301 inbytes
= u
->cnt
.inbytes
;
2302 outbytes
= u
->cnt
.outbytes
;
2303 } while (u64_stats_fetch_retry_irq(&u
->syncp
, start
));
2305 seq_printf(seq
, "%3X %8LX %8LX %8LX %16LX %16LX\n",
2306 i
, (u64
)conns
, (u64
)inpkts
,
2307 (u64
)outpkts
, (u64
)inbytes
,
2311 ip_vs_copy_stats(&kstats
, tot_stats
);
2313 seq_printf(seq
, " ~ %8LX %8LX %8LX %16LX %16LX\n\n",
2314 (unsigned long long)kstats
.conns
,
2315 (unsigned long long)kstats
.inpkts
,
2316 (unsigned long long)kstats
.outpkts
,
2317 (unsigned long long)kstats
.inbytes
,
2318 (unsigned long long)kstats
.outbytes
);
2320 /* ... 01234567 01234567 01234567 0123456701234567 0123456701234567 */
2322 " Conns/s Pkts/s Pkts/s Bytes/s Bytes/s\n");
2323 seq_printf(seq
, " %8LX %8LX %8LX %16LX %16LX\n",
2335 * Set timeout values for tcp tcpfin udp in the timeout_table.
2337 static int ip_vs_set_timeout(struct netns_ipvs
*ipvs
, struct ip_vs_timeout_user
*u
)
2339 #if defined(CONFIG_IP_VS_PROTO_TCP) || defined(CONFIG_IP_VS_PROTO_UDP)
2340 struct ip_vs_proto_data
*pd
;
2343 IP_VS_DBG(2, "Setting timeout tcp:%d tcpfin:%d udp:%d\n",
2348 #ifdef CONFIG_IP_VS_PROTO_TCP
2349 if (u
->tcp_timeout
< 0 || u
->tcp_timeout
> (INT_MAX
/ HZ
) ||
2350 u
->tcp_fin_timeout
< 0 || u
->tcp_fin_timeout
> (INT_MAX
/ HZ
)) {
2355 #ifdef CONFIG_IP_VS_PROTO_UDP
2356 if (u
->udp_timeout
< 0 || u
->udp_timeout
> (INT_MAX
/ HZ
))
2360 #ifdef CONFIG_IP_VS_PROTO_TCP
2361 if (u
->tcp_timeout
) {
2362 pd
= ip_vs_proto_data_get(ipvs
, IPPROTO_TCP
);
2363 pd
->timeout_table
[IP_VS_TCP_S_ESTABLISHED
]
2364 = u
->tcp_timeout
* HZ
;
2367 if (u
->tcp_fin_timeout
) {
2368 pd
= ip_vs_proto_data_get(ipvs
, IPPROTO_TCP
);
2369 pd
->timeout_table
[IP_VS_TCP_S_FIN_WAIT
]
2370 = u
->tcp_fin_timeout
* HZ
;
2374 #ifdef CONFIG_IP_VS_PROTO_UDP
2375 if (u
->udp_timeout
) {
2376 pd
= ip_vs_proto_data_get(ipvs
, IPPROTO_UDP
);
2377 pd
->timeout_table
[IP_VS_UDP_S_NORMAL
]
2378 = u
->udp_timeout
* HZ
;
2384 #define CMDID(cmd) (cmd - IP_VS_BASE_CTL)
2386 struct ip_vs_svcdest_user
{
2387 struct ip_vs_service_user s
;
2388 struct ip_vs_dest_user d
;
2391 static const unsigned char set_arglen
[CMDID(IP_VS_SO_SET_MAX
) + 1] = {
2392 [CMDID(IP_VS_SO_SET_ADD
)] = sizeof(struct ip_vs_service_user
),
2393 [CMDID(IP_VS_SO_SET_EDIT
)] = sizeof(struct ip_vs_service_user
),
2394 [CMDID(IP_VS_SO_SET_DEL
)] = sizeof(struct ip_vs_service_user
),
2395 [CMDID(IP_VS_SO_SET_ADDDEST
)] = sizeof(struct ip_vs_svcdest_user
),
2396 [CMDID(IP_VS_SO_SET_DELDEST
)] = sizeof(struct ip_vs_svcdest_user
),
2397 [CMDID(IP_VS_SO_SET_EDITDEST
)] = sizeof(struct ip_vs_svcdest_user
),
2398 [CMDID(IP_VS_SO_SET_TIMEOUT
)] = sizeof(struct ip_vs_timeout_user
),
2399 [CMDID(IP_VS_SO_SET_STARTDAEMON
)] = sizeof(struct ip_vs_daemon_user
),
2400 [CMDID(IP_VS_SO_SET_STOPDAEMON
)] = sizeof(struct ip_vs_daemon_user
),
2401 [CMDID(IP_VS_SO_SET_ZERO
)] = sizeof(struct ip_vs_service_user
),
2404 union ip_vs_set_arglen
{
2405 struct ip_vs_service_user field_IP_VS_SO_SET_ADD
;
2406 struct ip_vs_service_user field_IP_VS_SO_SET_EDIT
;
2407 struct ip_vs_service_user field_IP_VS_SO_SET_DEL
;
2408 struct ip_vs_svcdest_user field_IP_VS_SO_SET_ADDDEST
;
2409 struct ip_vs_svcdest_user field_IP_VS_SO_SET_DELDEST
;
2410 struct ip_vs_svcdest_user field_IP_VS_SO_SET_EDITDEST
;
2411 struct ip_vs_timeout_user field_IP_VS_SO_SET_TIMEOUT
;
2412 struct ip_vs_daemon_user field_IP_VS_SO_SET_STARTDAEMON
;
2413 struct ip_vs_daemon_user field_IP_VS_SO_SET_STOPDAEMON
;
2414 struct ip_vs_service_user field_IP_VS_SO_SET_ZERO
;
2417 #define MAX_SET_ARGLEN sizeof(union ip_vs_set_arglen)
2419 static void ip_vs_copy_usvc_compat(struct ip_vs_service_user_kern
*usvc
,
2420 struct ip_vs_service_user
*usvc_compat
)
2422 memset(usvc
, 0, sizeof(*usvc
));
2425 usvc
->protocol
= usvc_compat
->protocol
;
2426 usvc
->addr
.ip
= usvc_compat
->addr
;
2427 usvc
->port
= usvc_compat
->port
;
2428 usvc
->fwmark
= usvc_compat
->fwmark
;
2430 /* Deep copy of sched_name is not needed here */
2431 usvc
->sched_name
= usvc_compat
->sched_name
;
2433 usvc
->flags
= usvc_compat
->flags
;
2434 usvc
->timeout
= usvc_compat
->timeout
;
2435 usvc
->netmask
= usvc_compat
->netmask
;
2438 static void ip_vs_copy_udest_compat(struct ip_vs_dest_user_kern
*udest
,
2439 struct ip_vs_dest_user
*udest_compat
)
2441 memset(udest
, 0, sizeof(*udest
));
2443 udest
->addr
.ip
= udest_compat
->addr
;
2444 udest
->port
= udest_compat
->port
;
2445 udest
->conn_flags
= udest_compat
->conn_flags
;
2446 udest
->weight
= udest_compat
->weight
;
2447 udest
->u_threshold
= udest_compat
->u_threshold
;
2448 udest
->l_threshold
= udest_compat
->l_threshold
;
2449 udest
->af
= AF_INET
;
2450 udest
->tun_type
= IP_VS_CONN_F_TUNNEL_TYPE_IPIP
;
2454 do_ip_vs_set_ctl(struct sock
*sk
, int cmd
, sockptr_t ptr
, unsigned int len
)
2456 struct net
*net
= sock_net(sk
);
2458 unsigned char arg
[MAX_SET_ARGLEN
];
2459 struct ip_vs_service_user
*usvc_compat
;
2460 struct ip_vs_service_user_kern usvc
;
2461 struct ip_vs_service
*svc
;
2462 struct ip_vs_dest_user
*udest_compat
;
2463 struct ip_vs_dest_user_kern udest
;
2464 struct netns_ipvs
*ipvs
= net_ipvs(net
);
2466 BUILD_BUG_ON(sizeof(arg
) > 255);
2467 if (!ns_capable(sock_net(sk
)->user_ns
, CAP_NET_ADMIN
))
2470 if (cmd
< IP_VS_BASE_CTL
|| cmd
> IP_VS_SO_SET_MAX
)
2472 if (len
!= set_arglen
[CMDID(cmd
)]) {
2473 IP_VS_DBG(1, "set_ctl: len %u != %u\n",
2474 len
, set_arglen
[CMDID(cmd
)]);
2478 if (copy_from_sockptr(arg
, ptr
, len
) != 0)
2481 /* Handle daemons since they have another lock */
2482 if (cmd
== IP_VS_SO_SET_STARTDAEMON
||
2483 cmd
== IP_VS_SO_SET_STOPDAEMON
) {
2484 struct ip_vs_daemon_user
*dm
= (struct ip_vs_daemon_user
*)arg
;
2486 if (cmd
== IP_VS_SO_SET_STARTDAEMON
) {
2487 struct ipvs_sync_daemon_cfg cfg
;
2489 memset(&cfg
, 0, sizeof(cfg
));
2491 if (strscpy(cfg
.mcast_ifn
, dm
->mcast_ifn
,
2492 sizeof(cfg
.mcast_ifn
)) <= 0)
2494 cfg
.syncid
= dm
->syncid
;
2495 ret
= start_sync_thread(ipvs
, &cfg
, dm
->state
);
2497 ret
= stop_sync_thread(ipvs
, dm
->state
);
2502 mutex_lock(&__ip_vs_mutex
);
2503 if (cmd
== IP_VS_SO_SET_FLUSH
) {
2504 /* Flush the virtual service */
2505 ret
= ip_vs_flush(ipvs
, false);
2507 } else if (cmd
== IP_VS_SO_SET_TIMEOUT
) {
2508 /* Set timeout values for (tcp tcpfin udp) */
2509 ret
= ip_vs_set_timeout(ipvs
, (struct ip_vs_timeout_user
*)arg
);
2512 /* No more commands with len == 0 below */
2517 usvc_compat
= (struct ip_vs_service_user
*)arg
;
2518 udest_compat
= (struct ip_vs_dest_user
*)(usvc_compat
+ 1);
2520 /* We only use the new structs internally, so copy userspace compat
2521 * structs to extended internal versions */
2522 ip_vs_copy_usvc_compat(&usvc
, usvc_compat
);
2523 ip_vs_copy_udest_compat(&udest
, udest_compat
);
2525 if (cmd
== IP_VS_SO_SET_ZERO
) {
2526 /* if no service address is set, zero counters in all */
2527 if (!usvc
.fwmark
&& !usvc
.addr
.ip
&& !usvc
.port
) {
2528 ret
= ip_vs_zero_all(ipvs
);
2533 if ((cmd
== IP_VS_SO_SET_ADD
|| cmd
== IP_VS_SO_SET_EDIT
) &&
2534 strnlen(usvc
.sched_name
, IP_VS_SCHEDNAME_MAXLEN
) ==
2535 IP_VS_SCHEDNAME_MAXLEN
) {
2540 /* Check for valid protocol: TCP or UDP or SCTP, even for fwmark!=0 */
2541 if (usvc
.protocol
!= IPPROTO_TCP
&& usvc
.protocol
!= IPPROTO_UDP
&&
2542 usvc
.protocol
!= IPPROTO_SCTP
) {
2543 pr_err("set_ctl: invalid protocol: %d %pI4:%d\n",
2544 usvc
.protocol
, &usvc
.addr
.ip
,
2550 /* Lookup the exact service by <protocol, addr, port> or fwmark */
2552 if (usvc
.fwmark
== 0)
2553 svc
= __ip_vs_service_find(ipvs
, usvc
.af
, usvc
.protocol
,
2554 &usvc
.addr
, usvc
.port
);
2556 svc
= __ip_vs_svc_fwm_find(ipvs
, usvc
.af
, usvc
.fwmark
);
2559 if (cmd
!= IP_VS_SO_SET_ADD
2560 && (svc
== NULL
|| svc
->protocol
!= usvc
.protocol
)) {
2566 case IP_VS_SO_SET_ADD
:
2570 ret
= ip_vs_add_service(ipvs
, &usvc
, &svc
);
2572 case IP_VS_SO_SET_EDIT
:
2573 ret
= ip_vs_edit_service(svc
, &usvc
);
2575 case IP_VS_SO_SET_DEL
:
2576 ret
= ip_vs_del_service(svc
);
2580 case IP_VS_SO_SET_ZERO
:
2581 ret
= ip_vs_zero_service(svc
);
2583 case IP_VS_SO_SET_ADDDEST
:
2584 ret
= ip_vs_add_dest(svc
, &udest
);
2586 case IP_VS_SO_SET_EDITDEST
:
2587 ret
= ip_vs_edit_dest(svc
, &udest
);
2589 case IP_VS_SO_SET_DELDEST
:
2590 ret
= ip_vs_del_dest(svc
, &udest
);
2594 mutex_unlock(&__ip_vs_mutex
);
2600 ip_vs_copy_service(struct ip_vs_service_entry
*dst
, struct ip_vs_service
*src
)
2602 struct ip_vs_scheduler
*sched
;
2603 struct ip_vs_kstats kstats
;
2606 sched
= rcu_dereference_protected(src
->scheduler
, 1);
2607 sched_name
= sched
? sched
->name
: "none";
2608 dst
->protocol
= src
->protocol
;
2609 dst
->addr
= src
->addr
.ip
;
2610 dst
->port
= src
->port
;
2611 dst
->fwmark
= src
->fwmark
;
2612 strlcpy(dst
->sched_name
, sched_name
, sizeof(dst
->sched_name
));
2613 dst
->flags
= src
->flags
;
2614 dst
->timeout
= src
->timeout
/ HZ
;
2615 dst
->netmask
= src
->netmask
;
2616 dst
->num_dests
= src
->num_dests
;
2617 ip_vs_copy_stats(&kstats
, &src
->stats
);
2618 ip_vs_export_stats_user(&dst
->stats
, &kstats
);
2622 __ip_vs_get_service_entries(struct netns_ipvs
*ipvs
,
2623 const struct ip_vs_get_services
*get
,
2624 struct ip_vs_get_services __user
*uptr
)
2627 struct ip_vs_service
*svc
;
2628 struct ip_vs_service_entry entry
;
2631 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
2632 hlist_for_each_entry(svc
, &ip_vs_svc_table
[idx
], s_list
) {
2633 /* Only expose IPv4 entries to old interface */
2634 if (svc
->af
!= AF_INET
|| (svc
->ipvs
!= ipvs
))
2637 if (count
>= get
->num_services
)
2639 memset(&entry
, 0, sizeof(entry
));
2640 ip_vs_copy_service(&entry
, svc
);
2641 if (copy_to_user(&uptr
->entrytable
[count
],
2642 &entry
, sizeof(entry
))) {
2650 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
2651 hlist_for_each_entry(svc
, &ip_vs_svc_fwm_table
[idx
], f_list
) {
2652 /* Only expose IPv4 entries to old interface */
2653 if (svc
->af
!= AF_INET
|| (svc
->ipvs
!= ipvs
))
2656 if (count
>= get
->num_services
)
2658 memset(&entry
, 0, sizeof(entry
));
2659 ip_vs_copy_service(&entry
, svc
);
2660 if (copy_to_user(&uptr
->entrytable
[count
],
2661 &entry
, sizeof(entry
))) {
2673 __ip_vs_get_dest_entries(struct netns_ipvs
*ipvs
, const struct ip_vs_get_dests
*get
,
2674 struct ip_vs_get_dests __user
*uptr
)
2676 struct ip_vs_service
*svc
;
2677 union nf_inet_addr addr
= { .ip
= get
->addr
};
2682 svc
= __ip_vs_svc_fwm_find(ipvs
, AF_INET
, get
->fwmark
);
2684 svc
= __ip_vs_service_find(ipvs
, AF_INET
, get
->protocol
, &addr
,
2690 struct ip_vs_dest
*dest
;
2691 struct ip_vs_dest_entry entry
;
2692 struct ip_vs_kstats kstats
;
2694 memset(&entry
, 0, sizeof(entry
));
2695 list_for_each_entry(dest
, &svc
->destinations
, n_list
) {
2696 if (count
>= get
->num_dests
)
2699 /* Cannot expose heterogeneous members via sockopt
2702 if (dest
->af
!= svc
->af
)
2705 entry
.addr
= dest
->addr
.ip
;
2706 entry
.port
= dest
->port
;
2707 entry
.conn_flags
= atomic_read(&dest
->conn_flags
);
2708 entry
.weight
= atomic_read(&dest
->weight
);
2709 entry
.u_threshold
= dest
->u_threshold
;
2710 entry
.l_threshold
= dest
->l_threshold
;
2711 entry
.activeconns
= atomic_read(&dest
->activeconns
);
2712 entry
.inactconns
= atomic_read(&dest
->inactconns
);
2713 entry
.persistconns
= atomic_read(&dest
->persistconns
);
2714 ip_vs_copy_stats(&kstats
, &dest
->stats
);
2715 ip_vs_export_stats_user(&entry
.stats
, &kstats
);
2716 if (copy_to_user(&uptr
->entrytable
[count
],
2717 &entry
, sizeof(entry
))) {
2729 __ip_vs_get_timeouts(struct netns_ipvs
*ipvs
, struct ip_vs_timeout_user
*u
)
2731 #if defined(CONFIG_IP_VS_PROTO_TCP) || defined(CONFIG_IP_VS_PROTO_UDP)
2732 struct ip_vs_proto_data
*pd
;
2735 memset(u
, 0, sizeof (*u
));
2737 #ifdef CONFIG_IP_VS_PROTO_TCP
2738 pd
= ip_vs_proto_data_get(ipvs
, IPPROTO_TCP
);
2739 u
->tcp_timeout
= pd
->timeout_table
[IP_VS_TCP_S_ESTABLISHED
] / HZ
;
2740 u
->tcp_fin_timeout
= pd
->timeout_table
[IP_VS_TCP_S_FIN_WAIT
] / HZ
;
2742 #ifdef CONFIG_IP_VS_PROTO_UDP
2743 pd
= ip_vs_proto_data_get(ipvs
, IPPROTO_UDP
);
2745 pd
->timeout_table
[IP_VS_UDP_S_NORMAL
] / HZ
;
2749 static const unsigned char get_arglen
[CMDID(IP_VS_SO_GET_MAX
) + 1] = {
2750 [CMDID(IP_VS_SO_GET_VERSION
)] = 64,
2751 [CMDID(IP_VS_SO_GET_INFO
)] = sizeof(struct ip_vs_getinfo
),
2752 [CMDID(IP_VS_SO_GET_SERVICES
)] = sizeof(struct ip_vs_get_services
),
2753 [CMDID(IP_VS_SO_GET_SERVICE
)] = sizeof(struct ip_vs_service_entry
),
2754 [CMDID(IP_VS_SO_GET_DESTS
)] = sizeof(struct ip_vs_get_dests
),
2755 [CMDID(IP_VS_SO_GET_TIMEOUT
)] = sizeof(struct ip_vs_timeout_user
),
2756 [CMDID(IP_VS_SO_GET_DAEMON
)] = 2 * sizeof(struct ip_vs_daemon_user
),
2759 union ip_vs_get_arglen
{
2760 char field_IP_VS_SO_GET_VERSION
[64];
2761 struct ip_vs_getinfo field_IP_VS_SO_GET_INFO
;
2762 struct ip_vs_get_services field_IP_VS_SO_GET_SERVICES
;
2763 struct ip_vs_service_entry field_IP_VS_SO_GET_SERVICE
;
2764 struct ip_vs_get_dests field_IP_VS_SO_GET_DESTS
;
2765 struct ip_vs_timeout_user field_IP_VS_SO_GET_TIMEOUT
;
2766 struct ip_vs_daemon_user field_IP_VS_SO_GET_DAEMON
[2];
2769 #define MAX_GET_ARGLEN sizeof(union ip_vs_get_arglen)
2772 do_ip_vs_get_ctl(struct sock
*sk
, int cmd
, void __user
*user
, int *len
)
2774 unsigned char arg
[MAX_GET_ARGLEN
];
2776 unsigned int copylen
;
2777 struct net
*net
= sock_net(sk
);
2778 struct netns_ipvs
*ipvs
= net_ipvs(net
);
2781 BUILD_BUG_ON(sizeof(arg
) > 255);
2782 if (!ns_capable(sock_net(sk
)->user_ns
, CAP_NET_ADMIN
))
2785 if (cmd
< IP_VS_BASE_CTL
|| cmd
> IP_VS_SO_GET_MAX
)
2788 copylen
= get_arglen
[CMDID(cmd
)];
2789 if (*len
< (int) copylen
) {
2790 IP_VS_DBG(1, "get_ctl: len %d < %u\n", *len
, copylen
);
2794 if (copy_from_user(arg
, user
, copylen
) != 0)
2797 * Handle daemons first since it has its own locking
2799 if (cmd
== IP_VS_SO_GET_DAEMON
) {
2800 struct ip_vs_daemon_user d
[2];
2802 memset(&d
, 0, sizeof(d
));
2803 mutex_lock(&ipvs
->sync_mutex
);
2804 if (ipvs
->sync_state
& IP_VS_STATE_MASTER
) {
2805 d
[0].state
= IP_VS_STATE_MASTER
;
2806 strlcpy(d
[0].mcast_ifn
, ipvs
->mcfg
.mcast_ifn
,
2807 sizeof(d
[0].mcast_ifn
));
2808 d
[0].syncid
= ipvs
->mcfg
.syncid
;
2810 if (ipvs
->sync_state
& IP_VS_STATE_BACKUP
) {
2811 d
[1].state
= IP_VS_STATE_BACKUP
;
2812 strlcpy(d
[1].mcast_ifn
, ipvs
->bcfg
.mcast_ifn
,
2813 sizeof(d
[1].mcast_ifn
));
2814 d
[1].syncid
= ipvs
->bcfg
.syncid
;
2816 if (copy_to_user(user
, &d
, sizeof(d
)) != 0)
2818 mutex_unlock(&ipvs
->sync_mutex
);
2822 mutex_lock(&__ip_vs_mutex
);
2824 case IP_VS_SO_GET_VERSION
:
2828 sprintf(buf
, "IP Virtual Server version %d.%d.%d (size=%d)",
2829 NVERSION(IP_VS_VERSION_CODE
), ip_vs_conn_tab_size
);
2830 if (copy_to_user(user
, buf
, strlen(buf
)+1) != 0) {
2834 *len
= strlen(buf
)+1;
2838 case IP_VS_SO_GET_INFO
:
2840 struct ip_vs_getinfo info
;
2841 info
.version
= IP_VS_VERSION_CODE
;
2842 info
.size
= ip_vs_conn_tab_size
;
2843 info
.num_services
= ipvs
->num_services
;
2844 if (copy_to_user(user
, &info
, sizeof(info
)) != 0)
2849 case IP_VS_SO_GET_SERVICES
:
2851 struct ip_vs_get_services
*get
;
2854 get
= (struct ip_vs_get_services
*)arg
;
2855 size
= struct_size(get
, entrytable
, get
->num_services
);
2857 pr_err("length: %u != %u\n", *len
, size
);
2861 ret
= __ip_vs_get_service_entries(ipvs
, get
, user
);
2865 case IP_VS_SO_GET_SERVICE
:
2867 struct ip_vs_service_entry
*entry
;
2868 struct ip_vs_service
*svc
;
2869 union nf_inet_addr addr
;
2871 entry
= (struct ip_vs_service_entry
*)arg
;
2872 addr
.ip
= entry
->addr
;
2875 svc
= __ip_vs_svc_fwm_find(ipvs
, AF_INET
, entry
->fwmark
);
2877 svc
= __ip_vs_service_find(ipvs
, AF_INET
,
2878 entry
->protocol
, &addr
,
2882 ip_vs_copy_service(entry
, svc
);
2883 if (copy_to_user(user
, entry
, sizeof(*entry
)) != 0)
2890 case IP_VS_SO_GET_DESTS
:
2892 struct ip_vs_get_dests
*get
;
2895 get
= (struct ip_vs_get_dests
*)arg
;
2896 size
= struct_size(get
, entrytable
, get
->num_dests
);
2898 pr_err("length: %u != %u\n", *len
, size
);
2902 ret
= __ip_vs_get_dest_entries(ipvs
, get
, user
);
2906 case IP_VS_SO_GET_TIMEOUT
:
2908 struct ip_vs_timeout_user t
;
2910 __ip_vs_get_timeouts(ipvs
, &t
);
2911 if (copy_to_user(user
, &t
, sizeof(t
)) != 0)
2921 mutex_unlock(&__ip_vs_mutex
);
2926 static struct nf_sockopt_ops ip_vs_sockopts
= {
2928 .set_optmin
= IP_VS_BASE_CTL
,
2929 .set_optmax
= IP_VS_SO_SET_MAX
+1,
2930 .set
= do_ip_vs_set_ctl
,
2931 .get_optmin
= IP_VS_BASE_CTL
,
2932 .get_optmax
= IP_VS_SO_GET_MAX
+1,
2933 .get
= do_ip_vs_get_ctl
,
2934 .owner
= THIS_MODULE
,
2938 * Generic Netlink interface
2941 /* IPVS genetlink family */
2942 static struct genl_family ip_vs_genl_family
;
2944 /* Policy used for first-level command attributes */
2945 static const struct nla_policy ip_vs_cmd_policy
[IPVS_CMD_ATTR_MAX
+ 1] = {
2946 [IPVS_CMD_ATTR_SERVICE
] = { .type
= NLA_NESTED
},
2947 [IPVS_CMD_ATTR_DEST
] = { .type
= NLA_NESTED
},
2948 [IPVS_CMD_ATTR_DAEMON
] = { .type
= NLA_NESTED
},
2949 [IPVS_CMD_ATTR_TIMEOUT_TCP
] = { .type
= NLA_U32
},
2950 [IPVS_CMD_ATTR_TIMEOUT_TCP_FIN
] = { .type
= NLA_U32
},
2951 [IPVS_CMD_ATTR_TIMEOUT_UDP
] = { .type
= NLA_U32
},
2954 /* Policy used for attributes in nested attribute IPVS_CMD_ATTR_DAEMON */
2955 static const struct nla_policy ip_vs_daemon_policy
[IPVS_DAEMON_ATTR_MAX
+ 1] = {
2956 [IPVS_DAEMON_ATTR_STATE
] = { .type
= NLA_U32
},
2957 [IPVS_DAEMON_ATTR_MCAST_IFN
] = { .type
= NLA_NUL_STRING
,
2958 .len
= IP_VS_IFNAME_MAXLEN
- 1 },
2959 [IPVS_DAEMON_ATTR_SYNC_ID
] = { .type
= NLA_U32
},
2960 [IPVS_DAEMON_ATTR_SYNC_MAXLEN
] = { .type
= NLA_U16
},
2961 [IPVS_DAEMON_ATTR_MCAST_GROUP
] = { .type
= NLA_U32
},
2962 [IPVS_DAEMON_ATTR_MCAST_GROUP6
] = { .len
= sizeof(struct in6_addr
) },
2963 [IPVS_DAEMON_ATTR_MCAST_PORT
] = { .type
= NLA_U16
},
2964 [IPVS_DAEMON_ATTR_MCAST_TTL
] = { .type
= NLA_U8
},
2967 /* Policy used for attributes in nested attribute IPVS_CMD_ATTR_SERVICE */
2968 static const struct nla_policy ip_vs_svc_policy
[IPVS_SVC_ATTR_MAX
+ 1] = {
2969 [IPVS_SVC_ATTR_AF
] = { .type
= NLA_U16
},
2970 [IPVS_SVC_ATTR_PROTOCOL
] = { .type
= NLA_U16
},
2971 [IPVS_SVC_ATTR_ADDR
] = { .type
= NLA_BINARY
,
2972 .len
= sizeof(union nf_inet_addr
) },
2973 [IPVS_SVC_ATTR_PORT
] = { .type
= NLA_U16
},
2974 [IPVS_SVC_ATTR_FWMARK
] = { .type
= NLA_U32
},
2975 [IPVS_SVC_ATTR_SCHED_NAME
] = { .type
= NLA_NUL_STRING
,
2976 .len
= IP_VS_SCHEDNAME_MAXLEN
- 1 },
2977 [IPVS_SVC_ATTR_PE_NAME
] = { .type
= NLA_NUL_STRING
,
2978 .len
= IP_VS_PENAME_MAXLEN
},
2979 [IPVS_SVC_ATTR_FLAGS
] = { .type
= NLA_BINARY
,
2980 .len
= sizeof(struct ip_vs_flags
) },
2981 [IPVS_SVC_ATTR_TIMEOUT
] = { .type
= NLA_U32
},
2982 [IPVS_SVC_ATTR_NETMASK
] = { .type
= NLA_U32
},
2983 [IPVS_SVC_ATTR_STATS
] = { .type
= NLA_NESTED
},
2986 /* Policy used for attributes in nested attribute IPVS_CMD_ATTR_DEST */
2987 static const struct nla_policy ip_vs_dest_policy
[IPVS_DEST_ATTR_MAX
+ 1] = {
2988 [IPVS_DEST_ATTR_ADDR
] = { .type
= NLA_BINARY
,
2989 .len
= sizeof(union nf_inet_addr
) },
2990 [IPVS_DEST_ATTR_PORT
] = { .type
= NLA_U16
},
2991 [IPVS_DEST_ATTR_FWD_METHOD
] = { .type
= NLA_U32
},
2992 [IPVS_DEST_ATTR_WEIGHT
] = { .type
= NLA_U32
},
2993 [IPVS_DEST_ATTR_U_THRESH
] = { .type
= NLA_U32
},
2994 [IPVS_DEST_ATTR_L_THRESH
] = { .type
= NLA_U32
},
2995 [IPVS_DEST_ATTR_ACTIVE_CONNS
] = { .type
= NLA_U32
},
2996 [IPVS_DEST_ATTR_INACT_CONNS
] = { .type
= NLA_U32
},
2997 [IPVS_DEST_ATTR_PERSIST_CONNS
] = { .type
= NLA_U32
},
2998 [IPVS_DEST_ATTR_STATS
] = { .type
= NLA_NESTED
},
2999 [IPVS_DEST_ATTR_ADDR_FAMILY
] = { .type
= NLA_U16
},
3000 [IPVS_DEST_ATTR_TUN_TYPE
] = { .type
= NLA_U8
},
3001 [IPVS_DEST_ATTR_TUN_PORT
] = { .type
= NLA_U16
},
3002 [IPVS_DEST_ATTR_TUN_FLAGS
] = { .type
= NLA_U16
},
3005 static int ip_vs_genl_fill_stats(struct sk_buff
*skb
, int container_type
,
3006 struct ip_vs_kstats
*kstats
)
3008 struct nlattr
*nl_stats
= nla_nest_start_noflag(skb
, container_type
);
3013 if (nla_put_u32(skb
, IPVS_STATS_ATTR_CONNS
, (u32
)kstats
->conns
) ||
3014 nla_put_u32(skb
, IPVS_STATS_ATTR_INPKTS
, (u32
)kstats
->inpkts
) ||
3015 nla_put_u32(skb
, IPVS_STATS_ATTR_OUTPKTS
, (u32
)kstats
->outpkts
) ||
3016 nla_put_u64_64bit(skb
, IPVS_STATS_ATTR_INBYTES
, kstats
->inbytes
,
3017 IPVS_STATS_ATTR_PAD
) ||
3018 nla_put_u64_64bit(skb
, IPVS_STATS_ATTR_OUTBYTES
, kstats
->outbytes
,
3019 IPVS_STATS_ATTR_PAD
) ||
3020 nla_put_u32(skb
, IPVS_STATS_ATTR_CPS
, (u32
)kstats
->cps
) ||
3021 nla_put_u32(skb
, IPVS_STATS_ATTR_INPPS
, (u32
)kstats
->inpps
) ||
3022 nla_put_u32(skb
, IPVS_STATS_ATTR_OUTPPS
, (u32
)kstats
->outpps
) ||
3023 nla_put_u32(skb
, IPVS_STATS_ATTR_INBPS
, (u32
)kstats
->inbps
) ||
3024 nla_put_u32(skb
, IPVS_STATS_ATTR_OUTBPS
, (u32
)kstats
->outbps
))
3025 goto nla_put_failure
;
3026 nla_nest_end(skb
, nl_stats
);
3031 nla_nest_cancel(skb
, nl_stats
);
3035 static int ip_vs_genl_fill_stats64(struct sk_buff
*skb
, int container_type
,
3036 struct ip_vs_kstats
*kstats
)
3038 struct nlattr
*nl_stats
= nla_nest_start_noflag(skb
, container_type
);
3043 if (nla_put_u64_64bit(skb
, IPVS_STATS_ATTR_CONNS
, kstats
->conns
,
3044 IPVS_STATS_ATTR_PAD
) ||
3045 nla_put_u64_64bit(skb
, IPVS_STATS_ATTR_INPKTS
, kstats
->inpkts
,
3046 IPVS_STATS_ATTR_PAD
) ||
3047 nla_put_u64_64bit(skb
, IPVS_STATS_ATTR_OUTPKTS
, kstats
->outpkts
,
3048 IPVS_STATS_ATTR_PAD
) ||
3049 nla_put_u64_64bit(skb
, IPVS_STATS_ATTR_INBYTES
, kstats
->inbytes
,
3050 IPVS_STATS_ATTR_PAD
) ||
3051 nla_put_u64_64bit(skb
, IPVS_STATS_ATTR_OUTBYTES
, kstats
->outbytes
,
3052 IPVS_STATS_ATTR_PAD
) ||
3053 nla_put_u64_64bit(skb
, IPVS_STATS_ATTR_CPS
, kstats
->cps
,
3054 IPVS_STATS_ATTR_PAD
) ||
3055 nla_put_u64_64bit(skb
, IPVS_STATS_ATTR_INPPS
, kstats
->inpps
,
3056 IPVS_STATS_ATTR_PAD
) ||
3057 nla_put_u64_64bit(skb
, IPVS_STATS_ATTR_OUTPPS
, kstats
->outpps
,
3058 IPVS_STATS_ATTR_PAD
) ||
3059 nla_put_u64_64bit(skb
, IPVS_STATS_ATTR_INBPS
, kstats
->inbps
,
3060 IPVS_STATS_ATTR_PAD
) ||
3061 nla_put_u64_64bit(skb
, IPVS_STATS_ATTR_OUTBPS
, kstats
->outbps
,
3062 IPVS_STATS_ATTR_PAD
))
3063 goto nla_put_failure
;
3064 nla_nest_end(skb
, nl_stats
);
3069 nla_nest_cancel(skb
, nl_stats
);
3073 static int ip_vs_genl_fill_service(struct sk_buff
*skb
,
3074 struct ip_vs_service
*svc
)
3076 struct ip_vs_scheduler
*sched
;
3077 struct ip_vs_pe
*pe
;
3078 struct nlattr
*nl_service
;
3079 struct ip_vs_flags flags
= { .flags
= svc
->flags
,
3081 struct ip_vs_kstats kstats
;
3084 nl_service
= nla_nest_start_noflag(skb
, IPVS_CMD_ATTR_SERVICE
);
3088 if (nla_put_u16(skb
, IPVS_SVC_ATTR_AF
, svc
->af
))
3089 goto nla_put_failure
;
3091 if (nla_put_u32(skb
, IPVS_SVC_ATTR_FWMARK
, svc
->fwmark
))
3092 goto nla_put_failure
;
3094 if (nla_put_u16(skb
, IPVS_SVC_ATTR_PROTOCOL
, svc
->protocol
) ||
3095 nla_put(skb
, IPVS_SVC_ATTR_ADDR
, sizeof(svc
->addr
), &svc
->addr
) ||
3096 nla_put_be16(skb
, IPVS_SVC_ATTR_PORT
, svc
->port
))
3097 goto nla_put_failure
;
3100 sched
= rcu_dereference_protected(svc
->scheduler
, 1);
3101 sched_name
= sched
? sched
->name
: "none";
3102 pe
= rcu_dereference_protected(svc
->pe
, 1);
3103 if (nla_put_string(skb
, IPVS_SVC_ATTR_SCHED_NAME
, sched_name
) ||
3104 (pe
&& nla_put_string(skb
, IPVS_SVC_ATTR_PE_NAME
, pe
->name
)) ||
3105 nla_put(skb
, IPVS_SVC_ATTR_FLAGS
, sizeof(flags
), &flags
) ||
3106 nla_put_u32(skb
, IPVS_SVC_ATTR_TIMEOUT
, svc
->timeout
/ HZ
) ||
3107 nla_put_be32(skb
, IPVS_SVC_ATTR_NETMASK
, svc
->netmask
))
3108 goto nla_put_failure
;
3109 ip_vs_copy_stats(&kstats
, &svc
->stats
);
3110 if (ip_vs_genl_fill_stats(skb
, IPVS_SVC_ATTR_STATS
, &kstats
))
3111 goto nla_put_failure
;
3112 if (ip_vs_genl_fill_stats64(skb
, IPVS_SVC_ATTR_STATS64
, &kstats
))
3113 goto nla_put_failure
;
3115 nla_nest_end(skb
, nl_service
);
3120 nla_nest_cancel(skb
, nl_service
);
3124 static int ip_vs_genl_dump_service(struct sk_buff
*skb
,
3125 struct ip_vs_service
*svc
,
3126 struct netlink_callback
*cb
)
3130 hdr
= genlmsg_put(skb
, NETLINK_CB(cb
->skb
).portid
, cb
->nlh
->nlmsg_seq
,
3131 &ip_vs_genl_family
, NLM_F_MULTI
,
3132 IPVS_CMD_NEW_SERVICE
);
3136 if (ip_vs_genl_fill_service(skb
, svc
) < 0)
3137 goto nla_put_failure
;
3139 genlmsg_end(skb
, hdr
);
3143 genlmsg_cancel(skb
, hdr
);
3147 static int ip_vs_genl_dump_services(struct sk_buff
*skb
,
3148 struct netlink_callback
*cb
)
3151 int start
= cb
->args
[0];
3152 struct ip_vs_service
*svc
;
3153 struct net
*net
= sock_net(skb
->sk
);
3154 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3156 mutex_lock(&__ip_vs_mutex
);
3157 for (i
= 0; i
< IP_VS_SVC_TAB_SIZE
; i
++) {
3158 hlist_for_each_entry(svc
, &ip_vs_svc_table
[i
], s_list
) {
3159 if (++idx
<= start
|| (svc
->ipvs
!= ipvs
))
3161 if (ip_vs_genl_dump_service(skb
, svc
, cb
) < 0) {
3163 goto nla_put_failure
;
3168 for (i
= 0; i
< IP_VS_SVC_TAB_SIZE
; i
++) {
3169 hlist_for_each_entry(svc
, &ip_vs_svc_fwm_table
[i
], f_list
) {
3170 if (++idx
<= start
|| (svc
->ipvs
!= ipvs
))
3172 if (ip_vs_genl_dump_service(skb
, svc
, cb
) < 0) {
3174 goto nla_put_failure
;
3180 mutex_unlock(&__ip_vs_mutex
);
3186 static bool ip_vs_is_af_valid(int af
)
3190 #ifdef CONFIG_IP_VS_IPV6
3191 if (af
== AF_INET6
&& ipv6_mod_enabled())
3197 static int ip_vs_genl_parse_service(struct netns_ipvs
*ipvs
,
3198 struct ip_vs_service_user_kern
*usvc
,
3199 struct nlattr
*nla
, bool full_entry
,
3200 struct ip_vs_service
**ret_svc
)
3202 struct nlattr
*attrs
[IPVS_SVC_ATTR_MAX
+ 1];
3203 struct nlattr
*nla_af
, *nla_port
, *nla_fwmark
, *nla_protocol
, *nla_addr
;
3204 struct ip_vs_service
*svc
;
3206 /* Parse mandatory identifying service fields first */
3208 nla_parse_nested_deprecated(attrs
, IPVS_SVC_ATTR_MAX
, nla
, ip_vs_svc_policy
, NULL
))
3211 nla_af
= attrs
[IPVS_SVC_ATTR_AF
];
3212 nla_protocol
= attrs
[IPVS_SVC_ATTR_PROTOCOL
];
3213 nla_addr
= attrs
[IPVS_SVC_ATTR_ADDR
];
3214 nla_port
= attrs
[IPVS_SVC_ATTR_PORT
];
3215 nla_fwmark
= attrs
[IPVS_SVC_ATTR_FWMARK
];
3217 if (!(nla_af
&& (nla_fwmark
|| (nla_port
&& nla_protocol
&& nla_addr
))))
3220 memset(usvc
, 0, sizeof(*usvc
));
3222 usvc
->af
= nla_get_u16(nla_af
);
3223 if (!ip_vs_is_af_valid(usvc
->af
))
3224 return -EAFNOSUPPORT
;
3227 usvc
->protocol
= IPPROTO_TCP
;
3228 usvc
->fwmark
= nla_get_u32(nla_fwmark
);
3230 usvc
->protocol
= nla_get_u16(nla_protocol
);
3231 nla_memcpy(&usvc
->addr
, nla_addr
, sizeof(usvc
->addr
));
3232 usvc
->port
= nla_get_be16(nla_port
);
3238 svc
= __ip_vs_svc_fwm_find(ipvs
, usvc
->af
, usvc
->fwmark
);
3240 svc
= __ip_vs_service_find(ipvs
, usvc
->af
, usvc
->protocol
,
3241 &usvc
->addr
, usvc
->port
);
3245 /* If a full entry was requested, check for the additional fields */
3247 struct nlattr
*nla_sched
, *nla_flags
, *nla_pe
, *nla_timeout
,
3249 struct ip_vs_flags flags
;
3251 nla_sched
= attrs
[IPVS_SVC_ATTR_SCHED_NAME
];
3252 nla_pe
= attrs
[IPVS_SVC_ATTR_PE_NAME
];
3253 nla_flags
= attrs
[IPVS_SVC_ATTR_FLAGS
];
3254 nla_timeout
= attrs
[IPVS_SVC_ATTR_TIMEOUT
];
3255 nla_netmask
= attrs
[IPVS_SVC_ATTR_NETMASK
];
3257 if (!(nla_sched
&& nla_flags
&& nla_timeout
&& nla_netmask
))
3260 nla_memcpy(&flags
, nla_flags
, sizeof(flags
));
3262 /* prefill flags from service if it already exists */
3264 usvc
->flags
= svc
->flags
;
3266 /* set new flags from userland */
3267 usvc
->flags
= (usvc
->flags
& ~flags
.mask
) |
3268 (flags
.flags
& flags
.mask
);
3269 usvc
->sched_name
= nla_data(nla_sched
);
3270 usvc
->pe_name
= nla_pe
? nla_data(nla_pe
) : NULL
;
3271 usvc
->timeout
= nla_get_u32(nla_timeout
);
3272 usvc
->netmask
= nla_get_be32(nla_netmask
);
3278 static struct ip_vs_service
*ip_vs_genl_find_service(struct netns_ipvs
*ipvs
,
3281 struct ip_vs_service_user_kern usvc
;
3282 struct ip_vs_service
*svc
;
3285 ret
= ip_vs_genl_parse_service(ipvs
, &usvc
, nla
, false, &svc
);
3286 return ret
? ERR_PTR(ret
) : svc
;
3289 static int ip_vs_genl_fill_dest(struct sk_buff
*skb
, struct ip_vs_dest
*dest
)
3291 struct nlattr
*nl_dest
;
3292 struct ip_vs_kstats kstats
;
3294 nl_dest
= nla_nest_start_noflag(skb
, IPVS_CMD_ATTR_DEST
);
3298 if (nla_put(skb
, IPVS_DEST_ATTR_ADDR
, sizeof(dest
->addr
), &dest
->addr
) ||
3299 nla_put_be16(skb
, IPVS_DEST_ATTR_PORT
, dest
->port
) ||
3300 nla_put_u32(skb
, IPVS_DEST_ATTR_FWD_METHOD
,
3301 (atomic_read(&dest
->conn_flags
) &
3302 IP_VS_CONN_F_FWD_MASK
)) ||
3303 nla_put_u32(skb
, IPVS_DEST_ATTR_WEIGHT
,
3304 atomic_read(&dest
->weight
)) ||
3305 nla_put_u8(skb
, IPVS_DEST_ATTR_TUN_TYPE
,
3307 nla_put_be16(skb
, IPVS_DEST_ATTR_TUN_PORT
,
3309 nla_put_u16(skb
, IPVS_DEST_ATTR_TUN_FLAGS
,
3311 nla_put_u32(skb
, IPVS_DEST_ATTR_U_THRESH
, dest
->u_threshold
) ||
3312 nla_put_u32(skb
, IPVS_DEST_ATTR_L_THRESH
, dest
->l_threshold
) ||
3313 nla_put_u32(skb
, IPVS_DEST_ATTR_ACTIVE_CONNS
,
3314 atomic_read(&dest
->activeconns
)) ||
3315 nla_put_u32(skb
, IPVS_DEST_ATTR_INACT_CONNS
,
3316 atomic_read(&dest
->inactconns
)) ||
3317 nla_put_u32(skb
, IPVS_DEST_ATTR_PERSIST_CONNS
,
3318 atomic_read(&dest
->persistconns
)) ||
3319 nla_put_u16(skb
, IPVS_DEST_ATTR_ADDR_FAMILY
, dest
->af
))
3320 goto nla_put_failure
;
3321 ip_vs_copy_stats(&kstats
, &dest
->stats
);
3322 if (ip_vs_genl_fill_stats(skb
, IPVS_DEST_ATTR_STATS
, &kstats
))
3323 goto nla_put_failure
;
3324 if (ip_vs_genl_fill_stats64(skb
, IPVS_DEST_ATTR_STATS64
, &kstats
))
3325 goto nla_put_failure
;
3327 nla_nest_end(skb
, nl_dest
);
3332 nla_nest_cancel(skb
, nl_dest
);
3336 static int ip_vs_genl_dump_dest(struct sk_buff
*skb
, struct ip_vs_dest
*dest
,
3337 struct netlink_callback
*cb
)
3341 hdr
= genlmsg_put(skb
, NETLINK_CB(cb
->skb
).portid
, cb
->nlh
->nlmsg_seq
,
3342 &ip_vs_genl_family
, NLM_F_MULTI
,
3347 if (ip_vs_genl_fill_dest(skb
, dest
) < 0)
3348 goto nla_put_failure
;
3350 genlmsg_end(skb
, hdr
);
3354 genlmsg_cancel(skb
, hdr
);
3358 static int ip_vs_genl_dump_dests(struct sk_buff
*skb
,
3359 struct netlink_callback
*cb
)
3362 int start
= cb
->args
[0];
3363 struct ip_vs_service
*svc
;
3364 struct ip_vs_dest
*dest
;
3365 struct nlattr
*attrs
[IPVS_CMD_ATTR_MAX
+ 1];
3366 struct net
*net
= sock_net(skb
->sk
);
3367 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3369 mutex_lock(&__ip_vs_mutex
);
3371 /* Try to find the service for which to dump destinations */
3372 if (nlmsg_parse_deprecated(cb
->nlh
, GENL_HDRLEN
, attrs
, IPVS_CMD_ATTR_MAX
, ip_vs_cmd_policy
, cb
->extack
))
3376 svc
= ip_vs_genl_find_service(ipvs
, attrs
[IPVS_CMD_ATTR_SERVICE
]);
3377 if (IS_ERR_OR_NULL(svc
))
3380 /* Dump the destinations */
3381 list_for_each_entry(dest
, &svc
->destinations
, n_list
) {
3384 if (ip_vs_genl_dump_dest(skb
, dest
, cb
) < 0) {
3386 goto nla_put_failure
;
3394 mutex_unlock(&__ip_vs_mutex
);
3399 static int ip_vs_genl_parse_dest(struct ip_vs_dest_user_kern
*udest
,
3400 struct nlattr
*nla
, bool full_entry
)
3402 struct nlattr
*attrs
[IPVS_DEST_ATTR_MAX
+ 1];
3403 struct nlattr
*nla_addr
, *nla_port
;
3404 struct nlattr
*nla_addr_family
;
3406 /* Parse mandatory identifying destination fields first */
3408 nla_parse_nested_deprecated(attrs
, IPVS_DEST_ATTR_MAX
, nla
, ip_vs_dest_policy
, NULL
))
3411 nla_addr
= attrs
[IPVS_DEST_ATTR_ADDR
];
3412 nla_port
= attrs
[IPVS_DEST_ATTR_PORT
];
3413 nla_addr_family
= attrs
[IPVS_DEST_ATTR_ADDR_FAMILY
];
3415 if (!(nla_addr
&& nla_port
))
3418 memset(udest
, 0, sizeof(*udest
));
3420 nla_memcpy(&udest
->addr
, nla_addr
, sizeof(udest
->addr
));
3421 udest
->port
= nla_get_be16(nla_port
);
3423 if (nla_addr_family
)
3424 udest
->af
= nla_get_u16(nla_addr_family
);
3428 /* If a full entry was requested, check for the additional fields */
3430 struct nlattr
*nla_fwd
, *nla_weight
, *nla_u_thresh
,
3431 *nla_l_thresh
, *nla_tun_type
, *nla_tun_port
,
3434 nla_fwd
= attrs
[IPVS_DEST_ATTR_FWD_METHOD
];
3435 nla_weight
= attrs
[IPVS_DEST_ATTR_WEIGHT
];
3436 nla_u_thresh
= attrs
[IPVS_DEST_ATTR_U_THRESH
];
3437 nla_l_thresh
= attrs
[IPVS_DEST_ATTR_L_THRESH
];
3438 nla_tun_type
= attrs
[IPVS_DEST_ATTR_TUN_TYPE
];
3439 nla_tun_port
= attrs
[IPVS_DEST_ATTR_TUN_PORT
];
3440 nla_tun_flags
= attrs
[IPVS_DEST_ATTR_TUN_FLAGS
];
3442 if (!(nla_fwd
&& nla_weight
&& nla_u_thresh
&& nla_l_thresh
))
3445 udest
->conn_flags
= nla_get_u32(nla_fwd
)
3446 & IP_VS_CONN_F_FWD_MASK
;
3447 udest
->weight
= nla_get_u32(nla_weight
);
3448 udest
->u_threshold
= nla_get_u32(nla_u_thresh
);
3449 udest
->l_threshold
= nla_get_u32(nla_l_thresh
);
3452 udest
->tun_type
= nla_get_u8(nla_tun_type
);
3455 udest
->tun_port
= nla_get_be16(nla_tun_port
);
3458 udest
->tun_flags
= nla_get_u16(nla_tun_flags
);
3464 static int ip_vs_genl_fill_daemon(struct sk_buff
*skb
, __u32 state
,
3465 struct ipvs_sync_daemon_cfg
*c
)
3467 struct nlattr
*nl_daemon
;
3469 nl_daemon
= nla_nest_start_noflag(skb
, IPVS_CMD_ATTR_DAEMON
);
3473 if (nla_put_u32(skb
, IPVS_DAEMON_ATTR_STATE
, state
) ||
3474 nla_put_string(skb
, IPVS_DAEMON_ATTR_MCAST_IFN
, c
->mcast_ifn
) ||
3475 nla_put_u32(skb
, IPVS_DAEMON_ATTR_SYNC_ID
, c
->syncid
) ||
3476 nla_put_u16(skb
, IPVS_DAEMON_ATTR_SYNC_MAXLEN
, c
->sync_maxlen
) ||
3477 nla_put_u16(skb
, IPVS_DAEMON_ATTR_MCAST_PORT
, c
->mcast_port
) ||
3478 nla_put_u8(skb
, IPVS_DAEMON_ATTR_MCAST_TTL
, c
->mcast_ttl
))
3479 goto nla_put_failure
;
3480 #ifdef CONFIG_IP_VS_IPV6
3481 if (c
->mcast_af
== AF_INET6
) {
3482 if (nla_put_in6_addr(skb
, IPVS_DAEMON_ATTR_MCAST_GROUP6
,
3483 &c
->mcast_group
.in6
))
3484 goto nla_put_failure
;
3487 if (c
->mcast_af
== AF_INET
&&
3488 nla_put_in_addr(skb
, IPVS_DAEMON_ATTR_MCAST_GROUP
,
3490 goto nla_put_failure
;
3491 nla_nest_end(skb
, nl_daemon
);
3496 nla_nest_cancel(skb
, nl_daemon
);
3500 static int ip_vs_genl_dump_daemon(struct sk_buff
*skb
, __u32 state
,
3501 struct ipvs_sync_daemon_cfg
*c
,
3502 struct netlink_callback
*cb
)
3505 hdr
= genlmsg_put(skb
, NETLINK_CB(cb
->skb
).portid
, cb
->nlh
->nlmsg_seq
,
3506 &ip_vs_genl_family
, NLM_F_MULTI
,
3507 IPVS_CMD_NEW_DAEMON
);
3511 if (ip_vs_genl_fill_daemon(skb
, state
, c
))
3512 goto nla_put_failure
;
3514 genlmsg_end(skb
, hdr
);
3518 genlmsg_cancel(skb
, hdr
);
3522 static int ip_vs_genl_dump_daemons(struct sk_buff
*skb
,
3523 struct netlink_callback
*cb
)
3525 struct net
*net
= sock_net(skb
->sk
);
3526 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3528 mutex_lock(&ipvs
->sync_mutex
);
3529 if ((ipvs
->sync_state
& IP_VS_STATE_MASTER
) && !cb
->args
[0]) {
3530 if (ip_vs_genl_dump_daemon(skb
, IP_VS_STATE_MASTER
,
3531 &ipvs
->mcfg
, cb
) < 0)
3532 goto nla_put_failure
;
3537 if ((ipvs
->sync_state
& IP_VS_STATE_BACKUP
) && !cb
->args
[1]) {
3538 if (ip_vs_genl_dump_daemon(skb
, IP_VS_STATE_BACKUP
,
3539 &ipvs
->bcfg
, cb
) < 0)
3540 goto nla_put_failure
;
3546 mutex_unlock(&ipvs
->sync_mutex
);
3551 static int ip_vs_genl_new_daemon(struct netns_ipvs
*ipvs
, struct nlattr
**attrs
)
3553 struct ipvs_sync_daemon_cfg c
;
3557 memset(&c
, 0, sizeof(c
));
3558 if (!(attrs
[IPVS_DAEMON_ATTR_STATE
] &&
3559 attrs
[IPVS_DAEMON_ATTR_MCAST_IFN
] &&
3560 attrs
[IPVS_DAEMON_ATTR_SYNC_ID
]))
3562 strlcpy(c
.mcast_ifn
, nla_data(attrs
[IPVS_DAEMON_ATTR_MCAST_IFN
]),
3563 sizeof(c
.mcast_ifn
));
3564 c
.syncid
= nla_get_u32(attrs
[IPVS_DAEMON_ATTR_SYNC_ID
]);
3566 a
= attrs
[IPVS_DAEMON_ATTR_SYNC_MAXLEN
];
3568 c
.sync_maxlen
= nla_get_u16(a
);
3570 a
= attrs
[IPVS_DAEMON_ATTR_MCAST_GROUP
];
3572 c
.mcast_af
= AF_INET
;
3573 c
.mcast_group
.ip
= nla_get_in_addr(a
);
3574 if (!ipv4_is_multicast(c
.mcast_group
.ip
))
3577 a
= attrs
[IPVS_DAEMON_ATTR_MCAST_GROUP6
];
3579 #ifdef CONFIG_IP_VS_IPV6
3582 c
.mcast_af
= AF_INET6
;
3583 c
.mcast_group
.in6
= nla_get_in6_addr(a
);
3584 addr_type
= ipv6_addr_type(&c
.mcast_group
.in6
);
3585 if (!(addr_type
& IPV6_ADDR_MULTICAST
))
3588 return -EAFNOSUPPORT
;
3593 a
= attrs
[IPVS_DAEMON_ATTR_MCAST_PORT
];
3595 c
.mcast_port
= nla_get_u16(a
);
3597 a
= attrs
[IPVS_DAEMON_ATTR_MCAST_TTL
];
3599 c
.mcast_ttl
= nla_get_u8(a
);
3601 /* The synchronization protocol is incompatible with mixed family
3604 if (ipvs
->mixed_address_family_dests
> 0)
3607 ret
= start_sync_thread(ipvs
, &c
,
3608 nla_get_u32(attrs
[IPVS_DAEMON_ATTR_STATE
]));
3612 static int ip_vs_genl_del_daemon(struct netns_ipvs
*ipvs
, struct nlattr
**attrs
)
3616 if (!attrs
[IPVS_DAEMON_ATTR_STATE
])
3619 ret
= stop_sync_thread(ipvs
,
3620 nla_get_u32(attrs
[IPVS_DAEMON_ATTR_STATE
]));
3624 static int ip_vs_genl_set_config(struct netns_ipvs
*ipvs
, struct nlattr
**attrs
)
3626 struct ip_vs_timeout_user t
;
3628 __ip_vs_get_timeouts(ipvs
, &t
);
3630 if (attrs
[IPVS_CMD_ATTR_TIMEOUT_TCP
])
3631 t
.tcp_timeout
= nla_get_u32(attrs
[IPVS_CMD_ATTR_TIMEOUT_TCP
]);
3633 if (attrs
[IPVS_CMD_ATTR_TIMEOUT_TCP_FIN
])
3635 nla_get_u32(attrs
[IPVS_CMD_ATTR_TIMEOUT_TCP_FIN
]);
3637 if (attrs
[IPVS_CMD_ATTR_TIMEOUT_UDP
])
3638 t
.udp_timeout
= nla_get_u32(attrs
[IPVS_CMD_ATTR_TIMEOUT_UDP
]);
3640 return ip_vs_set_timeout(ipvs
, &t
);
3643 static int ip_vs_genl_set_daemon(struct sk_buff
*skb
, struct genl_info
*info
)
3645 int ret
= -EINVAL
, cmd
;
3646 struct net
*net
= sock_net(skb
->sk
);
3647 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3649 cmd
= info
->genlhdr
->cmd
;
3651 if (cmd
== IPVS_CMD_NEW_DAEMON
|| cmd
== IPVS_CMD_DEL_DAEMON
) {
3652 struct nlattr
*daemon_attrs
[IPVS_DAEMON_ATTR_MAX
+ 1];
3654 if (!info
->attrs
[IPVS_CMD_ATTR_DAEMON
] ||
3655 nla_parse_nested_deprecated(daemon_attrs
, IPVS_DAEMON_ATTR_MAX
, info
->attrs
[IPVS_CMD_ATTR_DAEMON
], ip_vs_daemon_policy
, info
->extack
))
3658 if (cmd
== IPVS_CMD_NEW_DAEMON
)
3659 ret
= ip_vs_genl_new_daemon(ipvs
, daemon_attrs
);
3661 ret
= ip_vs_genl_del_daemon(ipvs
, daemon_attrs
);
3668 static int ip_vs_genl_set_cmd(struct sk_buff
*skb
, struct genl_info
*info
)
3670 bool need_full_svc
= false, need_full_dest
= false;
3671 struct ip_vs_service
*svc
= NULL
;
3672 struct ip_vs_service_user_kern usvc
;
3673 struct ip_vs_dest_user_kern udest
;
3675 struct net
*net
= sock_net(skb
->sk
);
3676 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3678 cmd
= info
->genlhdr
->cmd
;
3680 mutex_lock(&__ip_vs_mutex
);
3682 if (cmd
== IPVS_CMD_FLUSH
) {
3683 ret
= ip_vs_flush(ipvs
, false);
3685 } else if (cmd
== IPVS_CMD_SET_CONFIG
) {
3686 ret
= ip_vs_genl_set_config(ipvs
, info
->attrs
);
3688 } else if (cmd
== IPVS_CMD_ZERO
&&
3689 !info
->attrs
[IPVS_CMD_ATTR_SERVICE
]) {
3690 ret
= ip_vs_zero_all(ipvs
);
3694 /* All following commands require a service argument, so check if we
3695 * received a valid one. We need a full service specification when
3696 * adding / editing a service. Only identifying members otherwise. */
3697 if (cmd
== IPVS_CMD_NEW_SERVICE
|| cmd
== IPVS_CMD_SET_SERVICE
)
3698 need_full_svc
= true;
3700 ret
= ip_vs_genl_parse_service(ipvs
, &usvc
,
3701 info
->attrs
[IPVS_CMD_ATTR_SERVICE
],
3702 need_full_svc
, &svc
);
3706 /* Unless we're adding a new service, the service must already exist */
3707 if ((cmd
!= IPVS_CMD_NEW_SERVICE
) && (svc
== NULL
)) {
3712 /* Destination commands require a valid destination argument. For
3713 * adding / editing a destination, we need a full destination
3715 if (cmd
== IPVS_CMD_NEW_DEST
|| cmd
== IPVS_CMD_SET_DEST
||
3716 cmd
== IPVS_CMD_DEL_DEST
) {
3717 if (cmd
!= IPVS_CMD_DEL_DEST
)
3718 need_full_dest
= true;
3720 ret
= ip_vs_genl_parse_dest(&udest
,
3721 info
->attrs
[IPVS_CMD_ATTR_DEST
],
3726 /* Old protocols did not allow the user to specify address
3727 * family, so we set it to zero instead. We also didn't
3728 * allow heterogeneous pools in the old code, so it's safe
3729 * to assume that this will have the same address family as
3735 if (!ip_vs_is_af_valid(udest
.af
)) {
3736 ret
= -EAFNOSUPPORT
;
3740 if (udest
.af
!= svc
->af
&& cmd
!= IPVS_CMD_DEL_DEST
) {
3741 /* The synchronization protocol is incompatible
3742 * with mixed family services
3744 if (ipvs
->sync_state
) {
3749 /* Which connection types do we support? */
3750 switch (udest
.conn_flags
) {
3751 case IP_VS_CONN_F_TUNNEL
:
3752 /* We are able to forward this */
3762 case IPVS_CMD_NEW_SERVICE
:
3764 ret
= ip_vs_add_service(ipvs
, &usvc
, &svc
);
3768 case IPVS_CMD_SET_SERVICE
:
3769 ret
= ip_vs_edit_service(svc
, &usvc
);
3771 case IPVS_CMD_DEL_SERVICE
:
3772 ret
= ip_vs_del_service(svc
);
3773 /* do not use svc, it can be freed */
3775 case IPVS_CMD_NEW_DEST
:
3776 ret
= ip_vs_add_dest(svc
, &udest
);
3778 case IPVS_CMD_SET_DEST
:
3779 ret
= ip_vs_edit_dest(svc
, &udest
);
3781 case IPVS_CMD_DEL_DEST
:
3782 ret
= ip_vs_del_dest(svc
, &udest
);
3785 ret
= ip_vs_zero_service(svc
);
3792 mutex_unlock(&__ip_vs_mutex
);
3797 static int ip_vs_genl_get_cmd(struct sk_buff
*skb
, struct genl_info
*info
)
3799 struct sk_buff
*msg
;
3801 int ret
, cmd
, reply_cmd
;
3802 struct net
*net
= sock_net(skb
->sk
);
3803 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3805 cmd
= info
->genlhdr
->cmd
;
3807 if (cmd
== IPVS_CMD_GET_SERVICE
)
3808 reply_cmd
= IPVS_CMD_NEW_SERVICE
;
3809 else if (cmd
== IPVS_CMD_GET_INFO
)
3810 reply_cmd
= IPVS_CMD_SET_INFO
;
3811 else if (cmd
== IPVS_CMD_GET_CONFIG
)
3812 reply_cmd
= IPVS_CMD_SET_CONFIG
;
3814 pr_err("unknown Generic Netlink command\n");
3818 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_KERNEL
);
3822 mutex_lock(&__ip_vs_mutex
);
3824 reply
= genlmsg_put_reply(msg
, info
, &ip_vs_genl_family
, 0, reply_cmd
);
3826 goto nla_put_failure
;
3829 case IPVS_CMD_GET_SERVICE
:
3831 struct ip_vs_service
*svc
;
3833 svc
= ip_vs_genl_find_service(ipvs
,
3834 info
->attrs
[IPVS_CMD_ATTR_SERVICE
]);
3839 ret
= ip_vs_genl_fill_service(msg
, svc
);
3841 goto nla_put_failure
;
3850 case IPVS_CMD_GET_CONFIG
:
3852 struct ip_vs_timeout_user t
;
3854 __ip_vs_get_timeouts(ipvs
, &t
);
3855 #ifdef CONFIG_IP_VS_PROTO_TCP
3856 if (nla_put_u32(msg
, IPVS_CMD_ATTR_TIMEOUT_TCP
,
3858 nla_put_u32(msg
, IPVS_CMD_ATTR_TIMEOUT_TCP_FIN
,
3860 goto nla_put_failure
;
3862 #ifdef CONFIG_IP_VS_PROTO_UDP
3863 if (nla_put_u32(msg
, IPVS_CMD_ATTR_TIMEOUT_UDP
, t
.udp_timeout
))
3864 goto nla_put_failure
;
3870 case IPVS_CMD_GET_INFO
:
3871 if (nla_put_u32(msg
, IPVS_INFO_ATTR_VERSION
,
3872 IP_VS_VERSION_CODE
) ||
3873 nla_put_u32(msg
, IPVS_INFO_ATTR_CONN_TAB_SIZE
,
3874 ip_vs_conn_tab_size
))
3875 goto nla_put_failure
;
3879 genlmsg_end(msg
, reply
);
3880 ret
= genlmsg_reply(msg
, info
);
3884 pr_err("not enough space in Netlink message\n");
3890 mutex_unlock(&__ip_vs_mutex
);
3896 static const struct genl_small_ops ip_vs_genl_ops
[] = {
3898 .cmd
= IPVS_CMD_NEW_SERVICE
,
3899 .validate
= GENL_DONT_VALIDATE_STRICT
| GENL_DONT_VALIDATE_DUMP
,
3900 .flags
= GENL_ADMIN_PERM
,
3901 .doit
= ip_vs_genl_set_cmd
,
3904 .cmd
= IPVS_CMD_SET_SERVICE
,
3905 .validate
= GENL_DONT_VALIDATE_STRICT
| GENL_DONT_VALIDATE_DUMP
,
3906 .flags
= GENL_ADMIN_PERM
,
3907 .doit
= ip_vs_genl_set_cmd
,
3910 .cmd
= IPVS_CMD_DEL_SERVICE
,
3911 .validate
= GENL_DONT_VALIDATE_STRICT
| GENL_DONT_VALIDATE_DUMP
,
3912 .flags
= GENL_ADMIN_PERM
,
3913 .doit
= ip_vs_genl_set_cmd
,
3916 .cmd
= IPVS_CMD_GET_SERVICE
,
3917 .validate
= GENL_DONT_VALIDATE_STRICT
| GENL_DONT_VALIDATE_DUMP
,
3918 .flags
= GENL_ADMIN_PERM
,
3919 .doit
= ip_vs_genl_get_cmd
,
3920 .dumpit
= ip_vs_genl_dump_services
,
3923 .cmd
= IPVS_CMD_NEW_DEST
,
3924 .validate
= GENL_DONT_VALIDATE_STRICT
| GENL_DONT_VALIDATE_DUMP
,
3925 .flags
= GENL_ADMIN_PERM
,
3926 .doit
= ip_vs_genl_set_cmd
,
3929 .cmd
= IPVS_CMD_SET_DEST
,
3930 .validate
= GENL_DONT_VALIDATE_STRICT
| GENL_DONT_VALIDATE_DUMP
,
3931 .flags
= GENL_ADMIN_PERM
,
3932 .doit
= ip_vs_genl_set_cmd
,
3935 .cmd
= IPVS_CMD_DEL_DEST
,
3936 .validate
= GENL_DONT_VALIDATE_STRICT
| GENL_DONT_VALIDATE_DUMP
,
3937 .flags
= GENL_ADMIN_PERM
,
3938 .doit
= ip_vs_genl_set_cmd
,
3941 .cmd
= IPVS_CMD_GET_DEST
,
3942 .validate
= GENL_DONT_VALIDATE_STRICT
| GENL_DONT_VALIDATE_DUMP
,
3943 .flags
= GENL_ADMIN_PERM
,
3944 .dumpit
= ip_vs_genl_dump_dests
,
3947 .cmd
= IPVS_CMD_NEW_DAEMON
,
3948 .validate
= GENL_DONT_VALIDATE_STRICT
| GENL_DONT_VALIDATE_DUMP
,
3949 .flags
= GENL_ADMIN_PERM
,
3950 .doit
= ip_vs_genl_set_daemon
,
3953 .cmd
= IPVS_CMD_DEL_DAEMON
,
3954 .validate
= GENL_DONT_VALIDATE_STRICT
| GENL_DONT_VALIDATE_DUMP
,
3955 .flags
= GENL_ADMIN_PERM
,
3956 .doit
= ip_vs_genl_set_daemon
,
3959 .cmd
= IPVS_CMD_GET_DAEMON
,
3960 .validate
= GENL_DONT_VALIDATE_STRICT
| GENL_DONT_VALIDATE_DUMP
,
3961 .flags
= GENL_ADMIN_PERM
,
3962 .dumpit
= ip_vs_genl_dump_daemons
,
3965 .cmd
= IPVS_CMD_SET_CONFIG
,
3966 .validate
= GENL_DONT_VALIDATE_STRICT
| GENL_DONT_VALIDATE_DUMP
,
3967 .flags
= GENL_ADMIN_PERM
,
3968 .doit
= ip_vs_genl_set_cmd
,
3971 .cmd
= IPVS_CMD_GET_CONFIG
,
3972 .validate
= GENL_DONT_VALIDATE_STRICT
| GENL_DONT_VALIDATE_DUMP
,
3973 .flags
= GENL_ADMIN_PERM
,
3974 .doit
= ip_vs_genl_get_cmd
,
3977 .cmd
= IPVS_CMD_GET_INFO
,
3978 .validate
= GENL_DONT_VALIDATE_STRICT
| GENL_DONT_VALIDATE_DUMP
,
3979 .flags
= GENL_ADMIN_PERM
,
3980 .doit
= ip_vs_genl_get_cmd
,
3983 .cmd
= IPVS_CMD_ZERO
,
3984 .validate
= GENL_DONT_VALIDATE_STRICT
| GENL_DONT_VALIDATE_DUMP
,
3985 .flags
= GENL_ADMIN_PERM
,
3986 .doit
= ip_vs_genl_set_cmd
,
3989 .cmd
= IPVS_CMD_FLUSH
,
3990 .validate
= GENL_DONT_VALIDATE_STRICT
| GENL_DONT_VALIDATE_DUMP
,
3991 .flags
= GENL_ADMIN_PERM
,
3992 .doit
= ip_vs_genl_set_cmd
,
3996 static struct genl_family ip_vs_genl_family __ro_after_init
= {
3998 .name
= IPVS_GENL_NAME
,
3999 .version
= IPVS_GENL_VERSION
,
4000 .maxattr
= IPVS_CMD_ATTR_MAX
,
4001 .policy
= ip_vs_cmd_policy
,
4002 .netnsok
= true, /* Make ipvsadm to work on netns */
4003 .module
= THIS_MODULE
,
4004 .small_ops
= ip_vs_genl_ops
,
4005 .n_small_ops
= ARRAY_SIZE(ip_vs_genl_ops
),
4008 static int __init
ip_vs_genl_register(void)
4010 return genl_register_family(&ip_vs_genl_family
);
4013 static void ip_vs_genl_unregister(void)
4015 genl_unregister_family(&ip_vs_genl_family
);
4018 /* End of Generic Netlink interface definitions */
4021 * per netns intit/exit func.
4023 #ifdef CONFIG_SYSCTL
4024 static int __net_init
ip_vs_control_net_init_sysctl(struct netns_ipvs
*ipvs
)
4026 struct net
*net
= ipvs
->net
;
4028 struct ctl_table
*tbl
;
4030 atomic_set(&ipvs
->dropentry
, 0);
4031 spin_lock_init(&ipvs
->dropentry_lock
);
4032 spin_lock_init(&ipvs
->droppacket_lock
);
4033 spin_lock_init(&ipvs
->securetcp_lock
);
4035 if (!net_eq(net
, &init_net
)) {
4036 tbl
= kmemdup(vs_vars
, sizeof(vs_vars
), GFP_KERNEL
);
4040 /* Don't export sysctls to unprivileged users */
4041 if (net
->user_ns
!= &init_user_ns
)
4042 tbl
[0].procname
= NULL
;
4045 /* Initialize sysctl defaults */
4046 for (idx
= 0; idx
< ARRAY_SIZE(vs_vars
); idx
++) {
4047 if (tbl
[idx
].proc_handler
== proc_do_defense_mode
)
4048 tbl
[idx
].extra2
= ipvs
;
4051 ipvs
->sysctl_amemthresh
= 1024;
4052 tbl
[idx
++].data
= &ipvs
->sysctl_amemthresh
;
4053 ipvs
->sysctl_am_droprate
= 10;
4054 tbl
[idx
++].data
= &ipvs
->sysctl_am_droprate
;
4055 tbl
[idx
++].data
= &ipvs
->sysctl_drop_entry
;
4056 tbl
[idx
++].data
= &ipvs
->sysctl_drop_packet
;
4057 #ifdef CONFIG_IP_VS_NFCT
4058 tbl
[idx
++].data
= &ipvs
->sysctl_conntrack
;
4060 tbl
[idx
++].data
= &ipvs
->sysctl_secure_tcp
;
4061 ipvs
->sysctl_snat_reroute
= 1;
4062 tbl
[idx
++].data
= &ipvs
->sysctl_snat_reroute
;
4063 ipvs
->sysctl_sync_ver
= 1;
4064 tbl
[idx
++].data
= &ipvs
->sysctl_sync_ver
;
4065 ipvs
->sysctl_sync_ports
= 1;
4066 tbl
[idx
++].data
= &ipvs
->sysctl_sync_ports
;
4067 tbl
[idx
++].data
= &ipvs
->sysctl_sync_persist_mode
;
4068 ipvs
->sysctl_sync_qlen_max
= nr_free_buffer_pages() / 32;
4069 tbl
[idx
++].data
= &ipvs
->sysctl_sync_qlen_max
;
4070 ipvs
->sysctl_sync_sock_size
= 0;
4071 tbl
[idx
++].data
= &ipvs
->sysctl_sync_sock_size
;
4072 tbl
[idx
++].data
= &ipvs
->sysctl_cache_bypass
;
4073 tbl
[idx
++].data
= &ipvs
->sysctl_expire_nodest_conn
;
4074 tbl
[idx
++].data
= &ipvs
->sysctl_sloppy_tcp
;
4075 tbl
[idx
++].data
= &ipvs
->sysctl_sloppy_sctp
;
4076 tbl
[idx
++].data
= &ipvs
->sysctl_expire_quiescent_template
;
4077 ipvs
->sysctl_sync_threshold
[0] = DEFAULT_SYNC_THRESHOLD
;
4078 ipvs
->sysctl_sync_threshold
[1] = DEFAULT_SYNC_PERIOD
;
4079 tbl
[idx
].data
= &ipvs
->sysctl_sync_threshold
;
4080 tbl
[idx
++].maxlen
= sizeof(ipvs
->sysctl_sync_threshold
);
4081 ipvs
->sysctl_sync_refresh_period
= DEFAULT_SYNC_REFRESH_PERIOD
;
4082 tbl
[idx
++].data
= &ipvs
->sysctl_sync_refresh_period
;
4083 ipvs
->sysctl_sync_retries
= clamp_t(int, DEFAULT_SYNC_RETRIES
, 0, 3);
4084 tbl
[idx
++].data
= &ipvs
->sysctl_sync_retries
;
4085 tbl
[idx
++].data
= &ipvs
->sysctl_nat_icmp_send
;
4086 ipvs
->sysctl_pmtu_disc
= 1;
4087 tbl
[idx
++].data
= &ipvs
->sysctl_pmtu_disc
;
4088 tbl
[idx
++].data
= &ipvs
->sysctl_backup_only
;
4089 ipvs
->sysctl_conn_reuse_mode
= 1;
4090 tbl
[idx
++].data
= &ipvs
->sysctl_conn_reuse_mode
;
4091 tbl
[idx
++].data
= &ipvs
->sysctl_schedule_icmp
;
4092 tbl
[idx
++].data
= &ipvs
->sysctl_ignore_tunneled
;
4094 ipvs
->sysctl_hdr
= register_net_sysctl(net
, "net/ipv4/vs", tbl
);
4095 if (ipvs
->sysctl_hdr
== NULL
) {
4096 if (!net_eq(net
, &init_net
))
4100 ip_vs_start_estimator(ipvs
, &ipvs
->tot_stats
);
4101 ipvs
->sysctl_tbl
= tbl
;
4102 /* Schedule defense work */
4103 INIT_DELAYED_WORK(&ipvs
->defense_work
, defense_work_handler
);
4104 queue_delayed_work(system_long_wq
, &ipvs
->defense_work
,
4105 DEFENSE_TIMER_PERIOD
);
4107 /* Init delayed work for expiring no dest conn */
4108 INIT_DELAYED_WORK(&ipvs
->expire_nodest_conn_work
,
4109 expire_nodest_conn_handler
);
4114 static void __net_exit
ip_vs_control_net_cleanup_sysctl(struct netns_ipvs
*ipvs
)
4116 struct net
*net
= ipvs
->net
;
4118 cancel_delayed_work_sync(&ipvs
->expire_nodest_conn_work
);
4119 cancel_delayed_work_sync(&ipvs
->defense_work
);
4120 cancel_work_sync(&ipvs
->defense_work
.work
);
4121 unregister_net_sysctl_table(ipvs
->sysctl_hdr
);
4122 ip_vs_stop_estimator(ipvs
, &ipvs
->tot_stats
);
4124 if (!net_eq(net
, &init_net
))
4125 kfree(ipvs
->sysctl_tbl
);
4130 static int __net_init
ip_vs_control_net_init_sysctl(struct netns_ipvs
*ipvs
) { return 0; }
4131 static void __net_exit
ip_vs_control_net_cleanup_sysctl(struct netns_ipvs
*ipvs
) { }
4135 static struct notifier_block ip_vs_dst_notifier
= {
4136 .notifier_call
= ip_vs_dst_event
,
4137 #ifdef CONFIG_IP_VS_IPV6
4138 .priority
= ADDRCONF_NOTIFY_PRIORITY
+ 5,
4142 int __net_init
ip_vs_control_net_init(struct netns_ipvs
*ipvs
)
4146 /* Initialize rs_table */
4147 for (idx
= 0; idx
< IP_VS_RTAB_SIZE
; idx
++)
4148 INIT_HLIST_HEAD(&ipvs
->rs_table
[idx
]);
4150 INIT_LIST_HEAD(&ipvs
->dest_trash
);
4151 spin_lock_init(&ipvs
->dest_trash_lock
);
4152 timer_setup(&ipvs
->dest_trash_timer
, ip_vs_dest_trash_expire
, 0);
4153 atomic_set(&ipvs
->ftpsvc_counter
, 0);
4154 atomic_set(&ipvs
->nullsvc_counter
, 0);
4155 atomic_set(&ipvs
->conn_out_counter
, 0);
4158 ipvs
->tot_stats
.cpustats
= alloc_percpu(struct ip_vs_cpu_stats
);
4159 if (!ipvs
->tot_stats
.cpustats
)
4162 for_each_possible_cpu(i
) {
4163 struct ip_vs_cpu_stats
*ipvs_tot_stats
;
4164 ipvs_tot_stats
= per_cpu_ptr(ipvs
->tot_stats
.cpustats
, i
);
4165 u64_stats_init(&ipvs_tot_stats
->syncp
);
4168 spin_lock_init(&ipvs
->tot_stats
.lock
);
4170 #ifdef CONFIG_PROC_FS
4171 if (!proc_create_net("ip_vs", 0, ipvs
->net
->proc_net
,
4172 &ip_vs_info_seq_ops
, sizeof(struct ip_vs_iter
)))
4174 if (!proc_create_net_single("ip_vs_stats", 0, ipvs
->net
->proc_net
,
4175 ip_vs_stats_show
, NULL
))
4177 if (!proc_create_net_single("ip_vs_stats_percpu", 0,
4178 ipvs
->net
->proc_net
,
4179 ip_vs_stats_percpu_show
, NULL
))
4183 if (ip_vs_control_net_init_sysctl(ipvs
))
4189 #ifdef CONFIG_PROC_FS
4190 remove_proc_entry("ip_vs_stats_percpu", ipvs
->net
->proc_net
);
4193 remove_proc_entry("ip_vs_stats", ipvs
->net
->proc_net
);
4196 remove_proc_entry("ip_vs", ipvs
->net
->proc_net
);
4200 free_percpu(ipvs
->tot_stats
.cpustats
);
4204 void __net_exit
ip_vs_control_net_cleanup(struct netns_ipvs
*ipvs
)
4206 ip_vs_trash_cleanup(ipvs
);
4207 ip_vs_control_net_cleanup_sysctl(ipvs
);
4208 #ifdef CONFIG_PROC_FS
4209 remove_proc_entry("ip_vs_stats_percpu", ipvs
->net
->proc_net
);
4210 remove_proc_entry("ip_vs_stats", ipvs
->net
->proc_net
);
4211 remove_proc_entry("ip_vs", ipvs
->net
->proc_net
);
4213 free_percpu(ipvs
->tot_stats
.cpustats
);
4216 int __init
ip_vs_register_nl_ioctl(void)
4220 ret
= nf_register_sockopt(&ip_vs_sockopts
);
4222 pr_err("cannot register sockopt.\n");
4226 ret
= ip_vs_genl_register();
4228 pr_err("cannot register Generic Netlink interface.\n");
4234 nf_unregister_sockopt(&ip_vs_sockopts
);
4239 void ip_vs_unregister_nl_ioctl(void)
4241 ip_vs_genl_unregister();
4242 nf_unregister_sockopt(&ip_vs_sockopts
);
4245 int __init
ip_vs_control_init(void)
4252 /* Initialize svc_table, ip_vs_svc_fwm_table */
4253 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
4254 INIT_HLIST_HEAD(&ip_vs_svc_table
[idx
]);
4255 INIT_HLIST_HEAD(&ip_vs_svc_fwm_table
[idx
]);
4258 smp_wmb(); /* Do we really need it now ? */
4260 ret
= register_netdevice_notifier(&ip_vs_dst_notifier
);
4269 void ip_vs_control_cleanup(void)
4272 unregister_netdevice_notifier(&ip_vs_dst_notifier
);