2 * IPVS An implementation of the IP virtual server support for the
3 * LINUX operating system. IPVS is now implemented as a module
4 * over the NetFilter framework. IPVS can be used to build a
5 * high-performance and highly available server based on a
8 * Authors: Wensong Zhang <wensong@linuxvirtualserver.org>
9 * Peter Kese <peter.kese@ijs.si>
10 * Julian Anastasov <ja@ssi.bg>
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version
15 * 2 of the License, or (at your option) any later version.
21 #define KMSG_COMPONENT "IPVS"
22 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
24 #include <linux/module.h>
25 #include <linux/init.h>
26 #include <linux/types.h>
27 #include <linux/capability.h>
29 #include <linux/sysctl.h>
30 #include <linux/proc_fs.h>
31 #include <linux/workqueue.h>
32 #include <linux/swap.h>
33 #include <linux/seq_file.h>
34 #include <linux/slab.h>
36 #include <linux/netfilter.h>
37 #include <linux/netfilter_ipv4.h>
38 #include <linux/mutex.h>
40 #include <net/net_namespace.h>
41 #include <linux/nsproxy.h>
43 #ifdef CONFIG_IP_VS_IPV6
45 #include <net/ip6_route.h>
47 #include <net/route.h>
49 #include <net/genetlink.h>
51 #include <asm/uaccess.h>
53 #include <net/ip_vs.h>
55 /* semaphore for IPVS sockopts. And, [gs]etsockopt may sleep. */
56 static DEFINE_MUTEX(__ip_vs_mutex
);
58 /* sysctl variables */
60 #ifdef CONFIG_IP_VS_DEBUG
61 static int sysctl_ip_vs_debug_level
= 0;
63 int ip_vs_get_debug_level(void)
65 return sysctl_ip_vs_debug_level
;
71 static void __ip_vs_del_service(struct ip_vs_service
*svc
, bool cleanup
);
74 #ifdef CONFIG_IP_VS_IPV6
75 /* Taken from rt6_fill_node() in net/ipv6/route.c, is there a better way? */
76 static bool __ip_vs_addr_is_local_v6(struct net
*net
,
77 const struct in6_addr
*addr
)
82 struct dst_entry
*dst
= ip6_route_output(net
, NULL
, &fl6
);
85 is_local
= !dst
->error
&& dst
->dev
&& (dst
->dev
->flags
& IFF_LOOPBACK
);
94 * update_defense_level is called from keventd and from sysctl,
95 * so it needs to protect itself from softirqs
97 static void update_defense_level(struct netns_ipvs
*ipvs
)
100 static int old_secure_tcp
= 0;
105 /* we only count free and buffered memory (in pages) */
107 availmem
= i
.freeram
+ i
.bufferram
;
108 /* however in linux 2.5 the i.bufferram is total page cache size,
110 /* si_swapinfo(&i); */
111 /* availmem = availmem - (i.totalswap - i.freeswap); */
113 nomem
= (availmem
< ipvs
->sysctl_amemthresh
);
118 spin_lock(&ipvs
->dropentry_lock
);
119 switch (ipvs
->sysctl_drop_entry
) {
121 atomic_set(&ipvs
->dropentry
, 0);
125 atomic_set(&ipvs
->dropentry
, 1);
126 ipvs
->sysctl_drop_entry
= 2;
128 atomic_set(&ipvs
->dropentry
, 0);
133 atomic_set(&ipvs
->dropentry
, 1);
135 atomic_set(&ipvs
->dropentry
, 0);
136 ipvs
->sysctl_drop_entry
= 1;
140 atomic_set(&ipvs
->dropentry
, 1);
143 spin_unlock(&ipvs
->dropentry_lock
);
146 spin_lock(&ipvs
->droppacket_lock
);
147 switch (ipvs
->sysctl_drop_packet
) {
153 ipvs
->drop_rate
= ipvs
->drop_counter
154 = ipvs
->sysctl_amemthresh
/
155 (ipvs
->sysctl_amemthresh
-availmem
);
156 ipvs
->sysctl_drop_packet
= 2;
163 ipvs
->drop_rate
= ipvs
->drop_counter
164 = ipvs
->sysctl_amemthresh
/
165 (ipvs
->sysctl_amemthresh
-availmem
);
168 ipvs
->sysctl_drop_packet
= 1;
172 ipvs
->drop_rate
= ipvs
->sysctl_am_droprate
;
175 spin_unlock(&ipvs
->droppacket_lock
);
178 spin_lock(&ipvs
->securetcp_lock
);
179 switch (ipvs
->sysctl_secure_tcp
) {
181 if (old_secure_tcp
>= 2)
186 if (old_secure_tcp
< 2)
188 ipvs
->sysctl_secure_tcp
= 2;
190 if (old_secure_tcp
>= 2)
196 if (old_secure_tcp
< 2)
199 if (old_secure_tcp
>= 2)
201 ipvs
->sysctl_secure_tcp
= 1;
205 if (old_secure_tcp
< 2)
209 old_secure_tcp
= ipvs
->sysctl_secure_tcp
;
211 ip_vs_protocol_timeout_change(ipvs
,
212 ipvs
->sysctl_secure_tcp
> 1);
213 spin_unlock(&ipvs
->securetcp_lock
);
220 * Timer for checking the defense
222 #define DEFENSE_TIMER_PERIOD 1*HZ
224 static void defense_work_handler(struct work_struct
*work
)
226 struct netns_ipvs
*ipvs
=
227 container_of(work
, struct netns_ipvs
, defense_work
.work
);
229 update_defense_level(ipvs
);
230 if (atomic_read(&ipvs
->dropentry
))
231 ip_vs_random_dropentry(ipvs
->net
);
232 schedule_delayed_work(&ipvs
->defense_work
, DEFENSE_TIMER_PERIOD
);
237 ip_vs_use_count_inc(void)
239 return try_module_get(THIS_MODULE
);
243 ip_vs_use_count_dec(void)
245 module_put(THIS_MODULE
);
250 * Hash table: for virtual service lookups
252 #define IP_VS_SVC_TAB_BITS 8
253 #define IP_VS_SVC_TAB_SIZE (1 << IP_VS_SVC_TAB_BITS)
254 #define IP_VS_SVC_TAB_MASK (IP_VS_SVC_TAB_SIZE - 1)
256 /* the service table hashed by <protocol, addr, port> */
257 static struct hlist_head ip_vs_svc_table
[IP_VS_SVC_TAB_SIZE
];
258 /* the service table hashed by fwmark */
259 static struct hlist_head ip_vs_svc_fwm_table
[IP_VS_SVC_TAB_SIZE
];
263 * Returns hash value for virtual service
265 static inline unsigned int
266 ip_vs_svc_hashkey(struct net
*net
, int af
, unsigned int proto
,
267 const union nf_inet_addr
*addr
, __be16 port
)
269 register unsigned int porth
= ntohs(port
);
270 __be32 addr_fold
= addr
->ip
;
273 #ifdef CONFIG_IP_VS_IPV6
275 addr_fold
= addr
->ip6
[0]^addr
->ip6
[1]^
276 addr
->ip6
[2]^addr
->ip6
[3];
278 ahash
= ntohl(addr_fold
);
279 ahash
^= ((size_t) net
>> 8);
281 return (proto
^ ahash
^ (porth
>> IP_VS_SVC_TAB_BITS
) ^ porth
) &
286 * Returns hash value of fwmark for virtual service lookup
288 static inline unsigned int ip_vs_svc_fwm_hashkey(struct net
*net
, __u32 fwmark
)
290 return (((size_t)net
>>8) ^ fwmark
) & IP_VS_SVC_TAB_MASK
;
294 * Hashes a service in the ip_vs_svc_table by <netns,proto,addr,port>
295 * or in the ip_vs_svc_fwm_table by fwmark.
296 * Should be called with locked tables.
298 static int ip_vs_svc_hash(struct ip_vs_service
*svc
)
302 if (svc
->flags
& IP_VS_SVC_F_HASHED
) {
303 pr_err("%s(): request for already hashed, called from %pF\n",
304 __func__
, __builtin_return_address(0));
308 if (svc
->fwmark
== 0) {
310 * Hash it by <netns,protocol,addr,port> in ip_vs_svc_table
312 hash
= ip_vs_svc_hashkey(svc
->net
, svc
->af
, svc
->protocol
,
313 &svc
->addr
, svc
->port
);
314 hlist_add_head_rcu(&svc
->s_list
, &ip_vs_svc_table
[hash
]);
317 * Hash it by fwmark in svc_fwm_table
319 hash
= ip_vs_svc_fwm_hashkey(svc
->net
, svc
->fwmark
);
320 hlist_add_head_rcu(&svc
->f_list
, &ip_vs_svc_fwm_table
[hash
]);
323 svc
->flags
|= IP_VS_SVC_F_HASHED
;
324 /* increase its refcnt because it is referenced by the svc table */
325 atomic_inc(&svc
->refcnt
);
331 * Unhashes a service from svc_table / svc_fwm_table.
332 * Should be called with locked tables.
334 static int ip_vs_svc_unhash(struct ip_vs_service
*svc
)
336 if (!(svc
->flags
& IP_VS_SVC_F_HASHED
)) {
337 pr_err("%s(): request for unhash flagged, called from %pF\n",
338 __func__
, __builtin_return_address(0));
342 if (svc
->fwmark
== 0) {
343 /* Remove it from the svc_table table */
344 hlist_del_rcu(&svc
->s_list
);
346 /* Remove it from the svc_fwm_table table */
347 hlist_del_rcu(&svc
->f_list
);
350 svc
->flags
&= ~IP_VS_SVC_F_HASHED
;
351 atomic_dec(&svc
->refcnt
);
357 * Get service by {netns, proto,addr,port} in the service table.
359 static inline struct ip_vs_service
*
360 __ip_vs_service_find(struct net
*net
, int af
, __u16 protocol
,
361 const union nf_inet_addr
*vaddr
, __be16 vport
)
364 struct ip_vs_service
*svc
;
366 /* Check for "full" addressed entries */
367 hash
= ip_vs_svc_hashkey(net
, af
, protocol
, vaddr
, vport
);
369 hlist_for_each_entry_rcu(svc
, &ip_vs_svc_table
[hash
], s_list
) {
371 && ip_vs_addr_equal(af
, &svc
->addr
, vaddr
)
372 && (svc
->port
== vport
)
373 && (svc
->protocol
== protocol
)
374 && net_eq(svc
->net
, net
)) {
385 * Get service by {fwmark} in the service table.
387 static inline struct ip_vs_service
*
388 __ip_vs_svc_fwm_find(struct net
*net
, int af
, __u32 fwmark
)
391 struct ip_vs_service
*svc
;
393 /* Check for fwmark addressed entries */
394 hash
= ip_vs_svc_fwm_hashkey(net
, fwmark
);
396 hlist_for_each_entry_rcu(svc
, &ip_vs_svc_fwm_table
[hash
], f_list
) {
397 if (svc
->fwmark
== fwmark
&& svc
->af
== af
398 && net_eq(svc
->net
, net
)) {
407 /* Find service, called under RCU lock */
408 struct ip_vs_service
*
409 ip_vs_service_find(struct net
*net
, int af
, __u32 fwmark
, __u16 protocol
,
410 const union nf_inet_addr
*vaddr
, __be16 vport
)
412 struct ip_vs_service
*svc
;
413 struct netns_ipvs
*ipvs
= net_ipvs(net
);
416 * Check the table hashed by fwmark first
419 svc
= __ip_vs_svc_fwm_find(net
, af
, fwmark
);
425 * Check the table hashed by <protocol,addr,port>
426 * for "full" addressed entries
428 svc
= __ip_vs_service_find(net
, af
, protocol
, vaddr
, vport
);
431 && protocol
== IPPROTO_TCP
432 && atomic_read(&ipvs
->ftpsvc_counter
)
433 && (vport
== FTPDATA
|| ntohs(vport
) >= PROT_SOCK
)) {
435 * Check if ftp service entry exists, the packet
436 * might belong to FTP data connections.
438 svc
= __ip_vs_service_find(net
, af
, protocol
, vaddr
, FTPPORT
);
442 && atomic_read(&ipvs
->nullsvc_counter
)) {
444 * Check if the catch-all port (port zero) exists
446 svc
= __ip_vs_service_find(net
, af
, protocol
, vaddr
, 0);
450 IP_VS_DBG_BUF(9, "lookup service: fwm %u %s %s:%u %s\n",
451 fwmark
, ip_vs_proto_name(protocol
),
452 IP_VS_DBG_ADDR(af
, vaddr
), ntohs(vport
),
453 svc
? "hit" : "not hit");
460 __ip_vs_bind_svc(struct ip_vs_dest
*dest
, struct ip_vs_service
*svc
)
462 atomic_inc(&svc
->refcnt
);
466 static void ip_vs_service_free(struct ip_vs_service
*svc
)
468 if (svc
->stats
.cpustats
)
469 free_percpu(svc
->stats
.cpustats
);
474 __ip_vs_unbind_svc(struct ip_vs_dest
*dest
)
476 struct ip_vs_service
*svc
= dest
->svc
;
479 if (atomic_dec_and_test(&svc
->refcnt
)) {
480 IP_VS_DBG_BUF(3, "Removing service %u/%s:%u\n",
482 IP_VS_DBG_ADDR(svc
->af
, &svc
->addr
),
484 ip_vs_service_free(svc
);
490 * Returns hash value for real service
492 static inline unsigned int ip_vs_rs_hashkey(int af
,
493 const union nf_inet_addr
*addr
,
496 register unsigned int porth
= ntohs(port
);
497 __be32 addr_fold
= addr
->ip
;
499 #ifdef CONFIG_IP_VS_IPV6
501 addr_fold
= addr
->ip6
[0]^addr
->ip6
[1]^
502 addr
->ip6
[2]^addr
->ip6
[3];
505 return (ntohl(addr_fold
)^(porth
>>IP_VS_RTAB_BITS
)^porth
)
509 /* Hash ip_vs_dest in rs_table by <proto,addr,port>. */
510 static void ip_vs_rs_hash(struct netns_ipvs
*ipvs
, struct ip_vs_dest
*dest
)
514 if (dest
->in_rs_table
)
518 * Hash by proto,addr,port,
519 * which are the parameters of the real service.
521 hash
= ip_vs_rs_hashkey(dest
->af
, &dest
->addr
, dest
->port
);
523 hlist_add_head_rcu(&dest
->d_list
, &ipvs
->rs_table
[hash
]);
524 dest
->in_rs_table
= 1;
527 /* Unhash ip_vs_dest from rs_table. */
528 static void ip_vs_rs_unhash(struct ip_vs_dest
*dest
)
531 * Remove it from the rs_table table.
533 if (dest
->in_rs_table
) {
534 hlist_del_rcu(&dest
->d_list
);
535 dest
->in_rs_table
= 0;
539 /* Check if real service by <proto,addr,port> is present */
540 bool ip_vs_has_real_service(struct net
*net
, int af
, __u16 protocol
,
541 const union nf_inet_addr
*daddr
, __be16 dport
)
543 struct netns_ipvs
*ipvs
= net_ipvs(net
);
545 struct ip_vs_dest
*dest
;
547 /* Check for "full" addressed entries */
548 hash
= ip_vs_rs_hashkey(af
, daddr
, dport
);
551 hlist_for_each_entry_rcu(dest
, &ipvs
->rs_table
[hash
], d_list
) {
552 if (dest
->port
== dport
&&
554 ip_vs_addr_equal(af
, &dest
->addr
, daddr
) &&
555 (dest
->protocol
== protocol
|| dest
->vfwmark
)) {
566 /* Lookup destination by {addr,port} in the given service
567 * Called under RCU lock.
569 static struct ip_vs_dest
*
570 ip_vs_lookup_dest(struct ip_vs_service
*svc
, const union nf_inet_addr
*daddr
,
573 struct ip_vs_dest
*dest
;
576 * Find the destination for the given service
578 list_for_each_entry_rcu(dest
, &svc
->destinations
, n_list
) {
579 if ((dest
->af
== svc
->af
)
580 && ip_vs_addr_equal(svc
->af
, &dest
->addr
, daddr
)
581 && (dest
->port
== dport
)) {
591 * Find destination by {daddr,dport,vaddr,protocol}
592 * Created to be used in ip_vs_process_message() in
593 * the backup synchronization daemon. It finds the
594 * destination to be bound to the received connection
596 * Called under RCU lock, no refcnt is returned.
598 struct ip_vs_dest
*ip_vs_find_dest(struct net
*net
, int af
,
599 const union nf_inet_addr
*daddr
,
601 const union nf_inet_addr
*vaddr
,
602 __be16 vport
, __u16 protocol
, __u32 fwmark
,
605 struct ip_vs_dest
*dest
;
606 struct ip_vs_service
*svc
;
609 svc
= ip_vs_service_find(net
, af
, fwmark
, protocol
, vaddr
, vport
);
612 if (fwmark
&& (flags
& IP_VS_CONN_F_FWD_MASK
) != IP_VS_CONN_F_MASQ
)
614 dest
= ip_vs_lookup_dest(svc
, daddr
, port
);
616 dest
= ip_vs_lookup_dest(svc
, daddr
, port
^ dport
);
620 void ip_vs_dest_dst_rcu_free(struct rcu_head
*head
)
622 struct ip_vs_dest_dst
*dest_dst
= container_of(head
,
623 struct ip_vs_dest_dst
,
626 dst_release(dest_dst
->dst_cache
);
630 /* Release dest_dst and dst_cache for dest in user context */
631 static void __ip_vs_dst_cache_reset(struct ip_vs_dest
*dest
)
633 struct ip_vs_dest_dst
*old
;
635 old
= rcu_dereference_protected(dest
->dest_dst
, 1);
637 RCU_INIT_POINTER(dest
->dest_dst
, NULL
);
638 call_rcu(&old
->rcu_head
, ip_vs_dest_dst_rcu_free
);
643 * Lookup dest by {svc,addr,port} in the destination trash.
644 * The destination trash is used to hold the destinations that are removed
645 * from the service table but are still referenced by some conn entries.
646 * The reason to add the destination trash is when the dest is temporary
647 * down (either by administrator or by monitor program), the dest can be
648 * picked back from the trash, the remaining connections to the dest can
649 * continue, and the counting information of the dest is also useful for
652 static struct ip_vs_dest
*
653 ip_vs_trash_get_dest(struct ip_vs_service
*svc
, const union nf_inet_addr
*daddr
,
656 struct ip_vs_dest
*dest
;
657 struct netns_ipvs
*ipvs
= net_ipvs(svc
->net
);
660 * Find the destination in trash
662 spin_lock_bh(&ipvs
->dest_trash_lock
);
663 list_for_each_entry(dest
, &ipvs
->dest_trash
, t_list
) {
664 IP_VS_DBG_BUF(3, "Destination %u/%s:%u still in trash, "
667 IP_VS_DBG_ADDR(svc
->af
, &dest
->addr
),
669 atomic_read(&dest
->refcnt
));
670 /* We can not reuse dest while in grace period
671 * because conns still can use dest->svc
673 if (test_bit(IP_VS_DEST_STATE_REMOVING
, &dest
->state
))
675 if (dest
->af
== svc
->af
&&
676 ip_vs_addr_equal(svc
->af
, &dest
->addr
, daddr
) &&
677 dest
->port
== dport
&&
678 dest
->vfwmark
== svc
->fwmark
&&
679 dest
->protocol
== svc
->protocol
&&
681 (ip_vs_addr_equal(svc
->af
, &dest
->vaddr
, &svc
->addr
) &&
682 dest
->vport
== svc
->port
))) {
684 list_del(&dest
->t_list
);
685 ip_vs_dest_hold(dest
);
693 spin_unlock_bh(&ipvs
->dest_trash_lock
);
698 static void ip_vs_dest_free(struct ip_vs_dest
*dest
)
700 __ip_vs_dst_cache_reset(dest
);
701 __ip_vs_unbind_svc(dest
);
702 free_percpu(dest
->stats
.cpustats
);
707 * Clean up all the destinations in the trash
708 * Called by the ip_vs_control_cleanup()
710 * When the ip_vs_control_clearup is activated by ipvs module exit,
711 * the service tables must have been flushed and all the connections
712 * are expired, and the refcnt of each destination in the trash must
713 * be 0, so we simply release them here.
715 static void ip_vs_trash_cleanup(struct net
*net
)
717 struct ip_vs_dest
*dest
, *nxt
;
718 struct netns_ipvs
*ipvs
= net_ipvs(net
);
720 del_timer_sync(&ipvs
->dest_trash_timer
);
721 /* No need to use dest_trash_lock */
722 list_for_each_entry_safe(dest
, nxt
, &ipvs
->dest_trash
, t_list
) {
723 list_del(&dest
->t_list
);
724 ip_vs_dest_free(dest
);
729 ip_vs_copy_stats(struct ip_vs_stats_user
*dst
, struct ip_vs_stats
*src
)
731 #define IP_VS_SHOW_STATS_COUNTER(c) dst->c = src->ustats.c - src->ustats0.c
733 spin_lock_bh(&src
->lock
);
735 IP_VS_SHOW_STATS_COUNTER(conns
);
736 IP_VS_SHOW_STATS_COUNTER(inpkts
);
737 IP_VS_SHOW_STATS_COUNTER(outpkts
);
738 IP_VS_SHOW_STATS_COUNTER(inbytes
);
739 IP_VS_SHOW_STATS_COUNTER(outbytes
);
741 ip_vs_read_estimator(dst
, src
);
743 spin_unlock_bh(&src
->lock
);
747 ip_vs_zero_stats(struct ip_vs_stats
*stats
)
749 spin_lock_bh(&stats
->lock
);
751 /* get current counters as zero point, rates are zeroed */
753 #define IP_VS_ZERO_STATS_COUNTER(c) stats->ustats0.c = stats->ustats.c
755 IP_VS_ZERO_STATS_COUNTER(conns
);
756 IP_VS_ZERO_STATS_COUNTER(inpkts
);
757 IP_VS_ZERO_STATS_COUNTER(outpkts
);
758 IP_VS_ZERO_STATS_COUNTER(inbytes
);
759 IP_VS_ZERO_STATS_COUNTER(outbytes
);
761 ip_vs_zero_estimator(stats
);
763 spin_unlock_bh(&stats
->lock
);
767 * Update a destination in the given service
770 __ip_vs_update_dest(struct ip_vs_service
*svc
, struct ip_vs_dest
*dest
,
771 struct ip_vs_dest_user_kern
*udest
, int add
)
773 struct netns_ipvs
*ipvs
= net_ipvs(svc
->net
);
774 struct ip_vs_scheduler
*sched
;
777 /* set the weight and the flags */
778 atomic_set(&dest
->weight
, udest
->weight
);
779 conn_flags
= udest
->conn_flags
& IP_VS_CONN_F_DEST_MASK
;
780 conn_flags
|= IP_VS_CONN_F_INACTIVE
;
782 /* set the IP_VS_CONN_F_NOOUTPUT flag if not masquerading/NAT */
783 if ((conn_flags
& IP_VS_CONN_F_FWD_MASK
) != IP_VS_CONN_F_MASQ
) {
784 conn_flags
|= IP_VS_CONN_F_NOOUTPUT
;
787 * Put the real service in rs_table if not present.
788 * For now only for NAT!
790 ip_vs_rs_hash(ipvs
, dest
);
792 atomic_set(&dest
->conn_flags
, conn_flags
);
794 /* bind the service */
796 __ip_vs_bind_svc(dest
, svc
);
798 if (dest
->svc
!= svc
) {
799 __ip_vs_unbind_svc(dest
);
800 ip_vs_zero_stats(&dest
->stats
);
801 __ip_vs_bind_svc(dest
, svc
);
805 /* set the dest status flags */
806 dest
->flags
|= IP_VS_DEST_F_AVAILABLE
;
808 if (udest
->u_threshold
== 0 || udest
->u_threshold
> dest
->u_threshold
)
809 dest
->flags
&= ~IP_VS_DEST_F_OVERLOAD
;
810 dest
->u_threshold
= udest
->u_threshold
;
811 dest
->l_threshold
= udest
->l_threshold
;
813 spin_lock_bh(&dest
->dst_lock
);
814 __ip_vs_dst_cache_reset(dest
);
815 spin_unlock_bh(&dest
->dst_lock
);
817 sched
= rcu_dereference_protected(svc
->scheduler
, 1);
819 ip_vs_start_estimator(svc
->net
, &dest
->stats
);
820 list_add_rcu(&dest
->n_list
, &svc
->destinations
);
823 sched
->add_dest(svc
, dest
);
826 sched
->upd_dest(svc
, dest
);
832 * Create a destination for the given service
835 ip_vs_new_dest(struct ip_vs_service
*svc
, struct ip_vs_dest_user_kern
*udest
,
836 struct ip_vs_dest
**dest_p
)
838 struct ip_vs_dest
*dest
;
843 #ifdef CONFIG_IP_VS_IPV6
844 if (svc
->af
== AF_INET6
) {
845 atype
= ipv6_addr_type(&udest
->addr
.in6
);
846 if ((!(atype
& IPV6_ADDR_UNICAST
) ||
847 atype
& IPV6_ADDR_LINKLOCAL
) &&
848 !__ip_vs_addr_is_local_v6(svc
->net
, &udest
->addr
.in6
))
853 atype
= inet_addr_type(svc
->net
, udest
->addr
.ip
);
854 if (atype
!= RTN_LOCAL
&& atype
!= RTN_UNICAST
)
858 dest
= kzalloc(sizeof(struct ip_vs_dest
), GFP_KERNEL
);
862 dest
->stats
.cpustats
= alloc_percpu(struct ip_vs_cpu_stats
);
863 if (!dest
->stats
.cpustats
)
867 dest
->protocol
= svc
->protocol
;
868 dest
->vaddr
= svc
->addr
;
869 dest
->vport
= svc
->port
;
870 dest
->vfwmark
= svc
->fwmark
;
871 ip_vs_addr_copy(svc
->af
, &dest
->addr
, &udest
->addr
);
872 dest
->port
= udest
->port
;
874 atomic_set(&dest
->activeconns
, 0);
875 atomic_set(&dest
->inactconns
, 0);
876 atomic_set(&dest
->persistconns
, 0);
877 atomic_set(&dest
->refcnt
, 1);
879 INIT_HLIST_NODE(&dest
->d_list
);
880 spin_lock_init(&dest
->dst_lock
);
881 spin_lock_init(&dest
->stats
.lock
);
882 __ip_vs_update_dest(svc
, dest
, udest
, 1);
896 * Add a destination into an existing service
899 ip_vs_add_dest(struct ip_vs_service
*svc
, struct ip_vs_dest_user_kern
*udest
)
901 struct ip_vs_dest
*dest
;
902 union nf_inet_addr daddr
;
903 __be16 dport
= udest
->port
;
908 if (udest
->weight
< 0) {
909 pr_err("%s(): server weight less than zero\n", __func__
);
913 if (udest
->l_threshold
> udest
->u_threshold
) {
914 pr_err("%s(): lower threshold is higher than upper threshold\n",
919 ip_vs_addr_copy(svc
->af
, &daddr
, &udest
->addr
);
921 /* We use function that requires RCU lock */
923 dest
= ip_vs_lookup_dest(svc
, &daddr
, dport
);
927 IP_VS_DBG(1, "%s(): dest already exists\n", __func__
);
932 * Check if the dest already exists in the trash and
933 * is from the same service
935 dest
= ip_vs_trash_get_dest(svc
, &daddr
, dport
);
938 IP_VS_DBG_BUF(3, "Get destination %s:%u from trash, "
939 "dest->refcnt=%d, service %u/%s:%u\n",
940 IP_VS_DBG_ADDR(svc
->af
, &daddr
), ntohs(dport
),
941 atomic_read(&dest
->refcnt
),
943 IP_VS_DBG_ADDR(svc
->af
, &dest
->vaddr
),
946 __ip_vs_update_dest(svc
, dest
, udest
, 1);
950 * Allocate and initialize the dest structure
952 ret
= ip_vs_new_dest(svc
, udest
, &dest
);
961 * Edit a destination in the given service
964 ip_vs_edit_dest(struct ip_vs_service
*svc
, struct ip_vs_dest_user_kern
*udest
)
966 struct ip_vs_dest
*dest
;
967 union nf_inet_addr daddr
;
968 __be16 dport
= udest
->port
;
972 if (udest
->weight
< 0) {
973 pr_err("%s(): server weight less than zero\n", __func__
);
977 if (udest
->l_threshold
> udest
->u_threshold
) {
978 pr_err("%s(): lower threshold is higher than upper threshold\n",
983 ip_vs_addr_copy(svc
->af
, &daddr
, &udest
->addr
);
985 /* We use function that requires RCU lock */
987 dest
= ip_vs_lookup_dest(svc
, &daddr
, dport
);
991 IP_VS_DBG(1, "%s(): dest doesn't exist\n", __func__
);
995 __ip_vs_update_dest(svc
, dest
, udest
, 0);
1001 static void ip_vs_dest_wait_readers(struct rcu_head
*head
)
1003 struct ip_vs_dest
*dest
= container_of(head
, struct ip_vs_dest
,
1006 /* End of grace period after unlinking */
1007 clear_bit(IP_VS_DEST_STATE_REMOVING
, &dest
->state
);
1012 * Delete a destination (must be already unlinked from the service)
1014 static void __ip_vs_del_dest(struct net
*net
, struct ip_vs_dest
*dest
,
1017 struct netns_ipvs
*ipvs
= net_ipvs(net
);
1019 ip_vs_stop_estimator(net
, &dest
->stats
);
1022 * Remove it from the d-linked list with the real services.
1024 ip_vs_rs_unhash(dest
);
1027 set_bit(IP_VS_DEST_STATE_REMOVING
, &dest
->state
);
1028 call_rcu(&dest
->rcu_head
, ip_vs_dest_wait_readers
);
1031 spin_lock_bh(&ipvs
->dest_trash_lock
);
1032 IP_VS_DBG_BUF(3, "Moving dest %s:%u into trash, dest->refcnt=%d\n",
1033 IP_VS_DBG_ADDR(dest
->af
, &dest
->addr
), ntohs(dest
->port
),
1034 atomic_read(&dest
->refcnt
));
1035 if (list_empty(&ipvs
->dest_trash
) && !cleanup
)
1036 mod_timer(&ipvs
->dest_trash_timer
,
1037 jiffies
+ IP_VS_DEST_TRASH_PERIOD
);
1038 /* dest lives in trash without reference */
1039 list_add(&dest
->t_list
, &ipvs
->dest_trash
);
1040 spin_unlock_bh(&ipvs
->dest_trash_lock
);
1041 ip_vs_dest_put(dest
);
1046 * Unlink a destination from the given service
1048 static void __ip_vs_unlink_dest(struct ip_vs_service
*svc
,
1049 struct ip_vs_dest
*dest
,
1052 dest
->flags
&= ~IP_VS_DEST_F_AVAILABLE
;
1055 * Remove it from the d-linked destination list.
1057 list_del_rcu(&dest
->n_list
);
1061 struct ip_vs_scheduler
*sched
;
1063 sched
= rcu_dereference_protected(svc
->scheduler
, 1);
1064 if (sched
->del_dest
)
1065 sched
->del_dest(svc
, dest
);
1071 * Delete a destination server in the given service
1074 ip_vs_del_dest(struct ip_vs_service
*svc
, struct ip_vs_dest_user_kern
*udest
)
1076 struct ip_vs_dest
*dest
;
1077 __be16 dport
= udest
->port
;
1081 /* We use function that requires RCU lock */
1083 dest
= ip_vs_lookup_dest(svc
, &udest
->addr
, dport
);
1087 IP_VS_DBG(1, "%s(): destination not found!\n", __func__
);
1092 * Unlink dest from the service
1094 __ip_vs_unlink_dest(svc
, dest
, 1);
1097 * Delete the destination
1099 __ip_vs_del_dest(svc
->net
, dest
, false);
1106 static void ip_vs_dest_trash_expire(unsigned long data
)
1108 struct net
*net
= (struct net
*) data
;
1109 struct netns_ipvs
*ipvs
= net_ipvs(net
);
1110 struct ip_vs_dest
*dest
, *next
;
1112 spin_lock(&ipvs
->dest_trash_lock
);
1113 list_for_each_entry_safe(dest
, next
, &ipvs
->dest_trash
, t_list
) {
1114 /* Skip if dest is in grace period */
1115 if (test_bit(IP_VS_DEST_STATE_REMOVING
, &dest
->state
))
1117 if (atomic_read(&dest
->refcnt
) > 0)
1119 IP_VS_DBG_BUF(3, "Removing destination %u/%s:%u from trash\n",
1121 IP_VS_DBG_ADDR(dest
->svc
->af
, &dest
->addr
),
1123 list_del(&dest
->t_list
);
1124 ip_vs_dest_free(dest
);
1126 if (!list_empty(&ipvs
->dest_trash
))
1127 mod_timer(&ipvs
->dest_trash_timer
,
1128 jiffies
+ IP_VS_DEST_TRASH_PERIOD
);
1129 spin_unlock(&ipvs
->dest_trash_lock
);
1133 * Add a service into the service hash table
1136 ip_vs_add_service(struct net
*net
, struct ip_vs_service_user_kern
*u
,
1137 struct ip_vs_service
**svc_p
)
1140 struct ip_vs_scheduler
*sched
= NULL
;
1141 struct ip_vs_pe
*pe
= NULL
;
1142 struct ip_vs_service
*svc
= NULL
;
1143 struct netns_ipvs
*ipvs
= net_ipvs(net
);
1145 /* increase the module use count */
1146 ip_vs_use_count_inc();
1148 /* Lookup the scheduler by 'u->sched_name' */
1149 sched
= ip_vs_scheduler_get(u
->sched_name
);
1150 if (sched
== NULL
) {
1151 pr_info("Scheduler module ip_vs_%s not found\n", u
->sched_name
);
1156 if (u
->pe_name
&& *u
->pe_name
) {
1157 pe
= ip_vs_pe_getbyname(u
->pe_name
);
1159 pr_info("persistence engine module ip_vs_pe_%s "
1160 "not found\n", u
->pe_name
);
1166 #ifdef CONFIG_IP_VS_IPV6
1167 if (u
->af
== AF_INET6
) {
1168 __u32 plen
= (__force __u32
) u
->netmask
;
1170 if (plen
< 1 || plen
> 128) {
1177 svc
= kzalloc(sizeof(struct ip_vs_service
), GFP_KERNEL
);
1179 IP_VS_DBG(1, "%s(): no memory\n", __func__
);
1183 svc
->stats
.cpustats
= alloc_percpu(struct ip_vs_cpu_stats
);
1184 if (!svc
->stats
.cpustats
) {
1189 /* I'm the first user of the service */
1190 atomic_set(&svc
->refcnt
, 0);
1193 svc
->protocol
= u
->protocol
;
1194 ip_vs_addr_copy(svc
->af
, &svc
->addr
, &u
->addr
);
1195 svc
->port
= u
->port
;
1196 svc
->fwmark
= u
->fwmark
;
1197 svc
->flags
= u
->flags
;
1198 svc
->timeout
= u
->timeout
* HZ
;
1199 svc
->netmask
= u
->netmask
;
1202 INIT_LIST_HEAD(&svc
->destinations
);
1203 spin_lock_init(&svc
->sched_lock
);
1204 spin_lock_init(&svc
->stats
.lock
);
1206 /* Bind the scheduler */
1207 ret
= ip_vs_bind_scheduler(svc
, sched
);
1212 /* Bind the ct retriever */
1213 RCU_INIT_POINTER(svc
->pe
, pe
);
1216 /* Update the virtual service counters */
1217 if (svc
->port
== FTPPORT
)
1218 atomic_inc(&ipvs
->ftpsvc_counter
);
1219 else if (svc
->port
== 0)
1220 atomic_inc(&ipvs
->nullsvc_counter
);
1222 ip_vs_start_estimator(net
, &svc
->stats
);
1224 /* Count only IPv4 services for old get/setsockopt interface */
1225 if (svc
->af
== AF_INET
)
1226 ipvs
->num_services
++;
1228 /* Hash the service into the service table */
1229 ip_vs_svc_hash(svc
);
1232 /* Now there is a service - full throttle */
1239 ip_vs_unbind_scheduler(svc
, sched
);
1240 ip_vs_service_free(svc
);
1242 ip_vs_scheduler_put(sched
);
1245 /* decrease the module use count */
1246 ip_vs_use_count_dec();
1253 * Edit a service and bind it with a new scheduler
1256 ip_vs_edit_service(struct ip_vs_service
*svc
, struct ip_vs_service_user_kern
*u
)
1258 struct ip_vs_scheduler
*sched
, *old_sched
;
1259 struct ip_vs_pe
*pe
= NULL
, *old_pe
= NULL
;
1263 * Lookup the scheduler, by 'u->sched_name'
1265 sched
= ip_vs_scheduler_get(u
->sched_name
);
1266 if (sched
== NULL
) {
1267 pr_info("Scheduler module ip_vs_%s not found\n", u
->sched_name
);
1272 if (u
->pe_name
&& *u
->pe_name
) {
1273 pe
= ip_vs_pe_getbyname(u
->pe_name
);
1275 pr_info("persistence engine module ip_vs_pe_%s "
1276 "not found\n", u
->pe_name
);
1283 #ifdef CONFIG_IP_VS_IPV6
1284 if (u
->af
== AF_INET6
) {
1285 __u32 plen
= (__force __u32
) u
->netmask
;
1287 if (plen
< 1 || plen
> 128) {
1294 old_sched
= rcu_dereference_protected(svc
->scheduler
, 1);
1295 if (sched
!= old_sched
) {
1296 /* Bind the new scheduler */
1297 ret
= ip_vs_bind_scheduler(svc
, sched
);
1302 /* Unbind the old scheduler on success */
1303 ip_vs_unbind_scheduler(svc
, old_sched
);
1307 * Set the flags and timeout value
1309 svc
->flags
= u
->flags
| IP_VS_SVC_F_HASHED
;
1310 svc
->timeout
= u
->timeout
* HZ
;
1311 svc
->netmask
= u
->netmask
;
1313 old_pe
= rcu_dereference_protected(svc
->pe
, 1);
1315 rcu_assign_pointer(svc
->pe
, pe
);
1318 ip_vs_scheduler_put(old_sched
);
1319 ip_vs_pe_put(old_pe
);
1323 static void ip_vs_service_rcu_free(struct rcu_head
*head
)
1325 struct ip_vs_service
*svc
;
1327 svc
= container_of(head
, struct ip_vs_service
, rcu_head
);
1328 ip_vs_service_free(svc
);
1332 * Delete a service from the service list
1333 * - The service must be unlinked, unlocked and not referenced!
1334 * - We are called under _bh lock
1336 static void __ip_vs_del_service(struct ip_vs_service
*svc
, bool cleanup
)
1338 struct ip_vs_dest
*dest
, *nxt
;
1339 struct ip_vs_scheduler
*old_sched
;
1340 struct ip_vs_pe
*old_pe
;
1341 struct netns_ipvs
*ipvs
= net_ipvs(svc
->net
);
1343 pr_info("%s: enter\n", __func__
);
1345 /* Count only IPv4 services for old get/setsockopt interface */
1346 if (svc
->af
== AF_INET
)
1347 ipvs
->num_services
--;
1349 ip_vs_stop_estimator(svc
->net
, &svc
->stats
);
1351 /* Unbind scheduler */
1352 old_sched
= rcu_dereference_protected(svc
->scheduler
, 1);
1353 ip_vs_unbind_scheduler(svc
, old_sched
);
1354 ip_vs_scheduler_put(old_sched
);
1356 /* Unbind persistence engine, keep svc->pe */
1357 old_pe
= rcu_dereference_protected(svc
->pe
, 1);
1358 ip_vs_pe_put(old_pe
);
1361 * Unlink the whole destination list
1363 list_for_each_entry_safe(dest
, nxt
, &svc
->destinations
, n_list
) {
1364 __ip_vs_unlink_dest(svc
, dest
, 0);
1365 __ip_vs_del_dest(svc
->net
, dest
, cleanup
);
1369 * Update the virtual service counters
1371 if (svc
->port
== FTPPORT
)
1372 atomic_dec(&ipvs
->ftpsvc_counter
);
1373 else if (svc
->port
== 0)
1374 atomic_dec(&ipvs
->nullsvc_counter
);
1377 * Free the service if nobody refers to it
1379 if (atomic_dec_and_test(&svc
->refcnt
)) {
1380 IP_VS_DBG_BUF(3, "Removing service %u/%s:%u\n",
1382 IP_VS_DBG_ADDR(svc
->af
, &svc
->addr
),
1384 call_rcu(&svc
->rcu_head
, ip_vs_service_rcu_free
);
1387 /* decrease the module use count */
1388 ip_vs_use_count_dec();
1392 * Unlink a service from list and try to delete it if its refcnt reached 0
1394 static void ip_vs_unlink_service(struct ip_vs_service
*svc
, bool cleanup
)
1396 /* Hold svc to avoid double release from dest_trash */
1397 atomic_inc(&svc
->refcnt
);
1399 * Unhash it from the service table
1401 ip_vs_svc_unhash(svc
);
1403 __ip_vs_del_service(svc
, cleanup
);
1407 * Delete a service from the service list
1409 static int ip_vs_del_service(struct ip_vs_service
*svc
)
1413 ip_vs_unlink_service(svc
, false);
1420 * Flush all the virtual services
1422 static int ip_vs_flush(struct net
*net
, bool cleanup
)
1425 struct ip_vs_service
*svc
;
1426 struct hlist_node
*n
;
1429 * Flush the service table hashed by <netns,protocol,addr,port>
1431 for(idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1432 hlist_for_each_entry_safe(svc
, n
, &ip_vs_svc_table
[idx
],
1434 if (net_eq(svc
->net
, net
))
1435 ip_vs_unlink_service(svc
, cleanup
);
1440 * Flush the service table hashed by fwmark
1442 for(idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1443 hlist_for_each_entry_safe(svc
, n
, &ip_vs_svc_fwm_table
[idx
],
1445 if (net_eq(svc
->net
, net
))
1446 ip_vs_unlink_service(svc
, cleanup
);
1454 * Delete service by {netns} in the service table.
1455 * Called by __ip_vs_cleanup()
1457 void ip_vs_service_net_cleanup(struct net
*net
)
1460 /* Check for "full" addressed entries */
1461 mutex_lock(&__ip_vs_mutex
);
1462 ip_vs_flush(net
, true);
1463 mutex_unlock(&__ip_vs_mutex
);
1467 /* Put all references for device (dst_cache) */
1469 ip_vs_forget_dev(struct ip_vs_dest
*dest
, struct net_device
*dev
)
1471 struct ip_vs_dest_dst
*dest_dst
;
1473 spin_lock_bh(&dest
->dst_lock
);
1474 dest_dst
= rcu_dereference_protected(dest
->dest_dst
, 1);
1475 if (dest_dst
&& dest_dst
->dst_cache
->dev
== dev
) {
1476 IP_VS_DBG_BUF(3, "Reset dev:%s dest %s:%u ,dest->refcnt=%d\n",
1478 IP_VS_DBG_ADDR(dest
->af
, &dest
->addr
),
1480 atomic_read(&dest
->refcnt
));
1481 __ip_vs_dst_cache_reset(dest
);
1483 spin_unlock_bh(&dest
->dst_lock
);
1486 /* Netdev event receiver
1487 * Currently only NETDEV_DOWN is handled to release refs to cached dsts
1489 static int ip_vs_dst_event(struct notifier_block
*this, unsigned long event
,
1492 struct net_device
*dev
= ptr
;
1493 struct net
*net
= dev_net(dev
);
1494 struct netns_ipvs
*ipvs
= net_ipvs(net
);
1495 struct ip_vs_service
*svc
;
1496 struct ip_vs_dest
*dest
;
1499 if (event
!= NETDEV_DOWN
|| !ipvs
)
1501 IP_VS_DBG(3, "%s() dev=%s\n", __func__
, dev
->name
);
1503 mutex_lock(&__ip_vs_mutex
);
1504 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1505 hlist_for_each_entry(svc
, &ip_vs_svc_table
[idx
], s_list
) {
1506 if (net_eq(svc
->net
, net
)) {
1507 list_for_each_entry(dest
, &svc
->destinations
,
1509 ip_vs_forget_dev(dest
, dev
);
1514 hlist_for_each_entry(svc
, &ip_vs_svc_fwm_table
[idx
], f_list
) {
1515 if (net_eq(svc
->net
, net
)) {
1516 list_for_each_entry(dest
, &svc
->destinations
,
1518 ip_vs_forget_dev(dest
, dev
);
1525 spin_lock_bh(&ipvs
->dest_trash_lock
);
1526 list_for_each_entry(dest
, &ipvs
->dest_trash
, t_list
) {
1527 ip_vs_forget_dev(dest
, dev
);
1529 spin_unlock_bh(&ipvs
->dest_trash_lock
);
1530 mutex_unlock(&__ip_vs_mutex
);
1536 * Zero counters in a service or all services
1538 static int ip_vs_zero_service(struct ip_vs_service
*svc
)
1540 struct ip_vs_dest
*dest
;
1542 list_for_each_entry(dest
, &svc
->destinations
, n_list
) {
1543 ip_vs_zero_stats(&dest
->stats
);
1545 ip_vs_zero_stats(&svc
->stats
);
1549 static int ip_vs_zero_all(struct net
*net
)
1552 struct ip_vs_service
*svc
;
1554 for(idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1555 hlist_for_each_entry(svc
, &ip_vs_svc_table
[idx
], s_list
) {
1556 if (net_eq(svc
->net
, net
))
1557 ip_vs_zero_service(svc
);
1561 for(idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1562 hlist_for_each_entry(svc
, &ip_vs_svc_fwm_table
[idx
], f_list
) {
1563 if (net_eq(svc
->net
, net
))
1564 ip_vs_zero_service(svc
);
1568 ip_vs_zero_stats(&net_ipvs(net
)->tot_stats
);
1572 #ifdef CONFIG_SYSCTL
1575 static int three
= 3;
1578 proc_do_defense_mode(ctl_table
*table
, int write
,
1579 void __user
*buffer
, size_t *lenp
, loff_t
*ppos
)
1581 struct net
*net
= current
->nsproxy
->net_ns
;
1582 int *valp
= table
->data
;
1586 rc
= proc_dointvec(table
, write
, buffer
, lenp
, ppos
);
1587 if (write
&& (*valp
!= val
)) {
1588 if ((*valp
< 0) || (*valp
> 3)) {
1589 /* Restore the correct value */
1592 update_defense_level(net_ipvs(net
));
1599 proc_do_sync_threshold(ctl_table
*table
, int write
,
1600 void __user
*buffer
, size_t *lenp
, loff_t
*ppos
)
1602 int *valp
= table
->data
;
1606 /* backup the value first */
1607 memcpy(val
, valp
, sizeof(val
));
1609 rc
= proc_dointvec(table
, write
, buffer
, lenp
, ppos
);
1610 if (write
&& (valp
[0] < 0 || valp
[1] < 0 ||
1611 (valp
[0] >= valp
[1] && valp
[1]))) {
1612 /* Restore the correct value */
1613 memcpy(valp
, val
, sizeof(val
));
1619 proc_do_sync_mode(ctl_table
*table
, int write
,
1620 void __user
*buffer
, size_t *lenp
, loff_t
*ppos
)
1622 int *valp
= table
->data
;
1626 rc
= proc_dointvec(table
, write
, buffer
, lenp
, ppos
);
1627 if (write
&& (*valp
!= val
)) {
1628 if ((*valp
< 0) || (*valp
> 1)) {
1629 /* Restore the correct value */
1637 proc_do_sync_ports(ctl_table
*table
, int write
,
1638 void __user
*buffer
, size_t *lenp
, loff_t
*ppos
)
1640 int *valp
= table
->data
;
1644 rc
= proc_dointvec(table
, write
, buffer
, lenp
, ppos
);
1645 if (write
&& (*valp
!= val
)) {
1646 if (*valp
< 1 || !is_power_of_2(*valp
)) {
1647 /* Restore the correct value */
1655 * IPVS sysctl table (under the /proc/sys/net/ipv4/vs/)
1656 * Do not change order or insert new entries without
1657 * align with netns init in ip_vs_control_net_init()
1660 static struct ctl_table vs_vars
[] = {
1662 .procname
= "amemthresh",
1663 .maxlen
= sizeof(int),
1665 .proc_handler
= proc_dointvec
,
1668 .procname
= "am_droprate",
1669 .maxlen
= sizeof(int),
1671 .proc_handler
= proc_dointvec
,
1674 .procname
= "drop_entry",
1675 .maxlen
= sizeof(int),
1677 .proc_handler
= proc_do_defense_mode
,
1680 .procname
= "drop_packet",
1681 .maxlen
= sizeof(int),
1683 .proc_handler
= proc_do_defense_mode
,
1685 #ifdef CONFIG_IP_VS_NFCT
1687 .procname
= "conntrack",
1688 .maxlen
= sizeof(int),
1690 .proc_handler
= &proc_dointvec
,
1694 .procname
= "secure_tcp",
1695 .maxlen
= sizeof(int),
1697 .proc_handler
= proc_do_defense_mode
,
1700 .procname
= "snat_reroute",
1701 .maxlen
= sizeof(int),
1703 .proc_handler
= &proc_dointvec
,
1706 .procname
= "sync_version",
1707 .maxlen
= sizeof(int),
1709 .proc_handler
= &proc_do_sync_mode
,
1712 .procname
= "sync_ports",
1713 .maxlen
= sizeof(int),
1715 .proc_handler
= &proc_do_sync_ports
,
1718 .procname
= "sync_qlen_max",
1719 .maxlen
= sizeof(int),
1721 .proc_handler
= proc_dointvec
,
1724 .procname
= "sync_sock_size",
1725 .maxlen
= sizeof(int),
1727 .proc_handler
= proc_dointvec
,
1730 .procname
= "cache_bypass",
1731 .maxlen
= sizeof(int),
1733 .proc_handler
= proc_dointvec
,
1736 .procname
= "expire_nodest_conn",
1737 .maxlen
= sizeof(int),
1739 .proc_handler
= proc_dointvec
,
1742 .procname
= "expire_quiescent_template",
1743 .maxlen
= sizeof(int),
1745 .proc_handler
= proc_dointvec
,
1748 .procname
= "sync_threshold",
1750 sizeof(((struct netns_ipvs
*)0)->sysctl_sync_threshold
),
1752 .proc_handler
= proc_do_sync_threshold
,
1755 .procname
= "sync_refresh_period",
1756 .maxlen
= sizeof(int),
1758 .proc_handler
= proc_dointvec_jiffies
,
1761 .procname
= "sync_retries",
1762 .maxlen
= sizeof(int),
1764 .proc_handler
= proc_dointvec_minmax
,
1769 .procname
= "nat_icmp_send",
1770 .maxlen
= sizeof(int),
1772 .proc_handler
= proc_dointvec
,
1775 .procname
= "pmtu_disc",
1776 .maxlen
= sizeof(int),
1778 .proc_handler
= proc_dointvec
,
1781 .procname
= "backup_only",
1782 .maxlen
= sizeof(int),
1784 .proc_handler
= proc_dointvec
,
1786 #ifdef CONFIG_IP_VS_DEBUG
1788 .procname
= "debug_level",
1789 .data
= &sysctl_ip_vs_debug_level
,
1790 .maxlen
= sizeof(int),
1792 .proc_handler
= proc_dointvec
,
1797 .procname
= "timeout_established",
1798 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_ESTABLISHED
],
1799 .maxlen
= sizeof(int),
1801 .proc_handler
= proc_dointvec_jiffies
,
1804 .procname
= "timeout_synsent",
1805 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_SYN_SENT
],
1806 .maxlen
= sizeof(int),
1808 .proc_handler
= proc_dointvec_jiffies
,
1811 .procname
= "timeout_synrecv",
1812 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_SYN_RECV
],
1813 .maxlen
= sizeof(int),
1815 .proc_handler
= proc_dointvec_jiffies
,
1818 .procname
= "timeout_finwait",
1819 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_FIN_WAIT
],
1820 .maxlen
= sizeof(int),
1822 .proc_handler
= proc_dointvec_jiffies
,
1825 .procname
= "timeout_timewait",
1826 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_TIME_WAIT
],
1827 .maxlen
= sizeof(int),
1829 .proc_handler
= proc_dointvec_jiffies
,
1832 .procname
= "timeout_close",
1833 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_CLOSE
],
1834 .maxlen
= sizeof(int),
1836 .proc_handler
= proc_dointvec_jiffies
,
1839 .procname
= "timeout_closewait",
1840 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_CLOSE_WAIT
],
1841 .maxlen
= sizeof(int),
1843 .proc_handler
= proc_dointvec_jiffies
,
1846 .procname
= "timeout_lastack",
1847 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_LAST_ACK
],
1848 .maxlen
= sizeof(int),
1850 .proc_handler
= proc_dointvec_jiffies
,
1853 .procname
= "timeout_listen",
1854 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_LISTEN
],
1855 .maxlen
= sizeof(int),
1857 .proc_handler
= proc_dointvec_jiffies
,
1860 .procname
= "timeout_synack",
1861 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_SYNACK
],
1862 .maxlen
= sizeof(int),
1864 .proc_handler
= proc_dointvec_jiffies
,
1867 .procname
= "timeout_udp",
1868 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_UDP
],
1869 .maxlen
= sizeof(int),
1871 .proc_handler
= proc_dointvec_jiffies
,
1874 .procname
= "timeout_icmp",
1875 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_ICMP
],
1876 .maxlen
= sizeof(int),
1878 .proc_handler
= proc_dointvec_jiffies
,
1886 #ifdef CONFIG_PROC_FS
1889 struct seq_net_private p
; /* Do not move this, netns depends upon it*/
1890 struct hlist_head
*table
;
1895 * Write the contents of the VS rule table to a PROCfs file.
1896 * (It is kept just for backward compatibility)
1898 static inline const char *ip_vs_fwd_name(unsigned int flags
)
1900 switch (flags
& IP_VS_CONN_F_FWD_MASK
) {
1901 case IP_VS_CONN_F_LOCALNODE
:
1903 case IP_VS_CONN_F_TUNNEL
:
1905 case IP_VS_CONN_F_DROUTE
:
1913 /* Get the Nth entry in the two lists */
1914 static struct ip_vs_service
*ip_vs_info_array(struct seq_file
*seq
, loff_t pos
)
1916 struct net
*net
= seq_file_net(seq
);
1917 struct ip_vs_iter
*iter
= seq
->private;
1919 struct ip_vs_service
*svc
;
1921 /* look in hash by protocol */
1922 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1923 hlist_for_each_entry_rcu(svc
, &ip_vs_svc_table
[idx
], s_list
) {
1924 if (net_eq(svc
->net
, net
) && pos
-- == 0) {
1925 iter
->table
= ip_vs_svc_table
;
1932 /* keep looking in fwmark */
1933 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1934 hlist_for_each_entry_rcu(svc
, &ip_vs_svc_fwm_table
[idx
],
1936 if (net_eq(svc
->net
, net
) && pos
-- == 0) {
1937 iter
->table
= ip_vs_svc_fwm_table
;
1947 static void *ip_vs_info_seq_start(struct seq_file
*seq
, loff_t
*pos
)
1951 return *pos
? ip_vs_info_array(seq
, *pos
- 1) : SEQ_START_TOKEN
;
1955 static void *ip_vs_info_seq_next(struct seq_file
*seq
, void *v
, loff_t
*pos
)
1957 struct hlist_node
*e
;
1958 struct ip_vs_iter
*iter
;
1959 struct ip_vs_service
*svc
;
1962 if (v
== SEQ_START_TOKEN
)
1963 return ip_vs_info_array(seq
,0);
1966 iter
= seq
->private;
1968 if (iter
->table
== ip_vs_svc_table
) {
1969 /* next service in table hashed by protocol */
1970 e
= rcu_dereference(hlist_next_rcu(&svc
->s_list
));
1972 return hlist_entry(e
, struct ip_vs_service
, s_list
);
1974 while (++iter
->bucket
< IP_VS_SVC_TAB_SIZE
) {
1975 hlist_for_each_entry_rcu(svc
,
1976 &ip_vs_svc_table
[iter
->bucket
],
1982 iter
->table
= ip_vs_svc_fwm_table
;
1987 /* next service in hashed by fwmark */
1988 e
= rcu_dereference(hlist_next_rcu(&svc
->f_list
));
1990 return hlist_entry(e
, struct ip_vs_service
, f_list
);
1993 while (++iter
->bucket
< IP_VS_SVC_TAB_SIZE
) {
1994 hlist_for_each_entry_rcu(svc
,
1995 &ip_vs_svc_fwm_table
[iter
->bucket
],
2003 static void ip_vs_info_seq_stop(struct seq_file
*seq
, void *v
)
2010 static int ip_vs_info_seq_show(struct seq_file
*seq
, void *v
)
2012 if (v
== SEQ_START_TOKEN
) {
2014 "IP Virtual Server version %d.%d.%d (size=%d)\n",
2015 NVERSION(IP_VS_VERSION_CODE
), ip_vs_conn_tab_size
);
2017 "Prot LocalAddress:Port Scheduler Flags\n");
2019 " -> RemoteAddress:Port Forward Weight ActiveConn InActConn\n");
2021 const struct ip_vs_service
*svc
= v
;
2022 const struct ip_vs_iter
*iter
= seq
->private;
2023 const struct ip_vs_dest
*dest
;
2024 struct ip_vs_scheduler
*sched
= rcu_dereference(svc
->scheduler
);
2026 if (iter
->table
== ip_vs_svc_table
) {
2027 #ifdef CONFIG_IP_VS_IPV6
2028 if (svc
->af
== AF_INET6
)
2029 seq_printf(seq
, "%s [%pI6]:%04X %s ",
2030 ip_vs_proto_name(svc
->protocol
),
2036 seq_printf(seq
, "%s %08X:%04X %s %s ",
2037 ip_vs_proto_name(svc
->protocol
),
2038 ntohl(svc
->addr
.ip
),
2041 (svc
->flags
& IP_VS_SVC_F_ONEPACKET
)?"ops ":"");
2043 seq_printf(seq
, "FWM %08X %s %s",
2044 svc
->fwmark
, sched
->name
,
2045 (svc
->flags
& IP_VS_SVC_F_ONEPACKET
)?"ops ":"");
2048 if (svc
->flags
& IP_VS_SVC_F_PERSISTENT
)
2049 seq_printf(seq
, "persistent %d %08X\n",
2051 ntohl(svc
->netmask
));
2053 seq_putc(seq
, '\n');
2055 list_for_each_entry_rcu(dest
, &svc
->destinations
, n_list
) {
2056 #ifdef CONFIG_IP_VS_IPV6
2057 if (dest
->af
== AF_INET6
)
2060 " %-7s %-6d %-10d %-10d\n",
2063 ip_vs_fwd_name(atomic_read(&dest
->conn_flags
)),
2064 atomic_read(&dest
->weight
),
2065 atomic_read(&dest
->activeconns
),
2066 atomic_read(&dest
->inactconns
));
2071 "%-7s %-6d %-10d %-10d\n",
2072 ntohl(dest
->addr
.ip
),
2074 ip_vs_fwd_name(atomic_read(&dest
->conn_flags
)),
2075 atomic_read(&dest
->weight
),
2076 atomic_read(&dest
->activeconns
),
2077 atomic_read(&dest
->inactconns
));
2084 static const struct seq_operations ip_vs_info_seq_ops
= {
2085 .start
= ip_vs_info_seq_start
,
2086 .next
= ip_vs_info_seq_next
,
2087 .stop
= ip_vs_info_seq_stop
,
2088 .show
= ip_vs_info_seq_show
,
2091 static int ip_vs_info_open(struct inode
*inode
, struct file
*file
)
2093 return seq_open_net(inode
, file
, &ip_vs_info_seq_ops
,
2094 sizeof(struct ip_vs_iter
));
2097 static const struct file_operations ip_vs_info_fops
= {
2098 .owner
= THIS_MODULE
,
2099 .open
= ip_vs_info_open
,
2101 .llseek
= seq_lseek
,
2102 .release
= seq_release_net
,
2105 static int ip_vs_stats_show(struct seq_file
*seq
, void *v
)
2107 struct net
*net
= seq_file_single_net(seq
);
2108 struct ip_vs_stats_user show
;
2110 /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */
2112 " Total Incoming Outgoing Incoming Outgoing\n");
2114 " Conns Packets Packets Bytes Bytes\n");
2116 ip_vs_copy_stats(&show
, &net_ipvs(net
)->tot_stats
);
2117 seq_printf(seq
, "%8X %8X %8X %16LX %16LX\n\n", show
.conns
,
2118 show
.inpkts
, show
.outpkts
,
2119 (unsigned long long) show
.inbytes
,
2120 (unsigned long long) show
.outbytes
);
2122 /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */
2124 " Conns/s Pkts/s Pkts/s Bytes/s Bytes/s\n");
2125 seq_printf(seq
, "%8X %8X %8X %16X %16X\n",
2126 show
.cps
, show
.inpps
, show
.outpps
,
2127 show
.inbps
, show
.outbps
);
2132 static int ip_vs_stats_seq_open(struct inode
*inode
, struct file
*file
)
2134 return single_open_net(inode
, file
, ip_vs_stats_show
);
2137 static const struct file_operations ip_vs_stats_fops
= {
2138 .owner
= THIS_MODULE
,
2139 .open
= ip_vs_stats_seq_open
,
2141 .llseek
= seq_lseek
,
2142 .release
= single_release_net
,
2145 static int ip_vs_stats_percpu_show(struct seq_file
*seq
, void *v
)
2147 struct net
*net
= seq_file_single_net(seq
);
2148 struct ip_vs_stats
*tot_stats
= &net_ipvs(net
)->tot_stats
;
2149 struct ip_vs_cpu_stats __percpu
*cpustats
= tot_stats
->cpustats
;
2150 struct ip_vs_stats_user rates
;
2153 /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */
2155 " Total Incoming Outgoing Incoming Outgoing\n");
2157 "CPU Conns Packets Packets Bytes Bytes\n");
2159 for_each_possible_cpu(i
) {
2160 struct ip_vs_cpu_stats
*u
= per_cpu_ptr(cpustats
, i
);
2162 __u64 inbytes
, outbytes
;
2165 start
= u64_stats_fetch_begin_bh(&u
->syncp
);
2166 inbytes
= u
->ustats
.inbytes
;
2167 outbytes
= u
->ustats
.outbytes
;
2168 } while (u64_stats_fetch_retry_bh(&u
->syncp
, start
));
2170 seq_printf(seq
, "%3X %8X %8X %8X %16LX %16LX\n",
2171 i
, u
->ustats
.conns
, u
->ustats
.inpkts
,
2172 u
->ustats
.outpkts
, (__u64
)inbytes
,
2176 spin_lock_bh(&tot_stats
->lock
);
2178 seq_printf(seq
, " ~ %8X %8X %8X %16LX %16LX\n\n",
2179 tot_stats
->ustats
.conns
, tot_stats
->ustats
.inpkts
,
2180 tot_stats
->ustats
.outpkts
,
2181 (unsigned long long) tot_stats
->ustats
.inbytes
,
2182 (unsigned long long) tot_stats
->ustats
.outbytes
);
2184 ip_vs_read_estimator(&rates
, tot_stats
);
2186 spin_unlock_bh(&tot_stats
->lock
);
2188 /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */
2190 " Conns/s Pkts/s Pkts/s Bytes/s Bytes/s\n");
2191 seq_printf(seq
, " %8X %8X %8X %16X %16X\n",
2201 static int ip_vs_stats_percpu_seq_open(struct inode
*inode
, struct file
*file
)
2203 return single_open_net(inode
, file
, ip_vs_stats_percpu_show
);
2206 static const struct file_operations ip_vs_stats_percpu_fops
= {
2207 .owner
= THIS_MODULE
,
2208 .open
= ip_vs_stats_percpu_seq_open
,
2210 .llseek
= seq_lseek
,
2211 .release
= single_release_net
,
2216 * Set timeout values for tcp tcpfin udp in the timeout_table.
2218 static int ip_vs_set_timeout(struct net
*net
, struct ip_vs_timeout_user
*u
)
2220 #if defined(CONFIG_IP_VS_PROTO_TCP) || defined(CONFIG_IP_VS_PROTO_UDP)
2221 struct ip_vs_proto_data
*pd
;
2224 IP_VS_DBG(2, "Setting timeout tcp:%d tcpfin:%d udp:%d\n",
2229 #ifdef CONFIG_IP_VS_PROTO_TCP
2230 if (u
->tcp_timeout
) {
2231 pd
= ip_vs_proto_data_get(net
, IPPROTO_TCP
);
2232 pd
->timeout_table
[IP_VS_TCP_S_ESTABLISHED
]
2233 = u
->tcp_timeout
* HZ
;
2236 if (u
->tcp_fin_timeout
) {
2237 pd
= ip_vs_proto_data_get(net
, IPPROTO_TCP
);
2238 pd
->timeout_table
[IP_VS_TCP_S_FIN_WAIT
]
2239 = u
->tcp_fin_timeout
* HZ
;
2243 #ifdef CONFIG_IP_VS_PROTO_UDP
2244 if (u
->udp_timeout
) {
2245 pd
= ip_vs_proto_data_get(net
, IPPROTO_UDP
);
2246 pd
->timeout_table
[IP_VS_UDP_S_NORMAL
]
2247 = u
->udp_timeout
* HZ
;
2254 #define SET_CMDID(cmd) (cmd - IP_VS_BASE_CTL)
2255 #define SERVICE_ARG_LEN (sizeof(struct ip_vs_service_user))
2256 #define SVCDEST_ARG_LEN (sizeof(struct ip_vs_service_user) + \
2257 sizeof(struct ip_vs_dest_user))
2258 #define TIMEOUT_ARG_LEN (sizeof(struct ip_vs_timeout_user))
2259 #define DAEMON_ARG_LEN (sizeof(struct ip_vs_daemon_user))
2260 #define MAX_ARG_LEN SVCDEST_ARG_LEN
2262 static const unsigned char set_arglen
[SET_CMDID(IP_VS_SO_SET_MAX
)+1] = {
2263 [SET_CMDID(IP_VS_SO_SET_ADD
)] = SERVICE_ARG_LEN
,
2264 [SET_CMDID(IP_VS_SO_SET_EDIT
)] = SERVICE_ARG_LEN
,
2265 [SET_CMDID(IP_VS_SO_SET_DEL
)] = SERVICE_ARG_LEN
,
2266 [SET_CMDID(IP_VS_SO_SET_FLUSH
)] = 0,
2267 [SET_CMDID(IP_VS_SO_SET_ADDDEST
)] = SVCDEST_ARG_LEN
,
2268 [SET_CMDID(IP_VS_SO_SET_DELDEST
)] = SVCDEST_ARG_LEN
,
2269 [SET_CMDID(IP_VS_SO_SET_EDITDEST
)] = SVCDEST_ARG_LEN
,
2270 [SET_CMDID(IP_VS_SO_SET_TIMEOUT
)] = TIMEOUT_ARG_LEN
,
2271 [SET_CMDID(IP_VS_SO_SET_STARTDAEMON
)] = DAEMON_ARG_LEN
,
2272 [SET_CMDID(IP_VS_SO_SET_STOPDAEMON
)] = DAEMON_ARG_LEN
,
2273 [SET_CMDID(IP_VS_SO_SET_ZERO
)] = SERVICE_ARG_LEN
,
2276 static void ip_vs_copy_usvc_compat(struct ip_vs_service_user_kern
*usvc
,
2277 struct ip_vs_service_user
*usvc_compat
)
2279 memset(usvc
, 0, sizeof(*usvc
));
2282 usvc
->protocol
= usvc_compat
->protocol
;
2283 usvc
->addr
.ip
= usvc_compat
->addr
;
2284 usvc
->port
= usvc_compat
->port
;
2285 usvc
->fwmark
= usvc_compat
->fwmark
;
2287 /* Deep copy of sched_name is not needed here */
2288 usvc
->sched_name
= usvc_compat
->sched_name
;
2290 usvc
->flags
= usvc_compat
->flags
;
2291 usvc
->timeout
= usvc_compat
->timeout
;
2292 usvc
->netmask
= usvc_compat
->netmask
;
2295 static void ip_vs_copy_udest_compat(struct ip_vs_dest_user_kern
*udest
,
2296 struct ip_vs_dest_user
*udest_compat
)
2298 memset(udest
, 0, sizeof(*udest
));
2300 udest
->addr
.ip
= udest_compat
->addr
;
2301 udest
->port
= udest_compat
->port
;
2302 udest
->conn_flags
= udest_compat
->conn_flags
;
2303 udest
->weight
= udest_compat
->weight
;
2304 udest
->u_threshold
= udest_compat
->u_threshold
;
2305 udest
->l_threshold
= udest_compat
->l_threshold
;
2309 do_ip_vs_set_ctl(struct sock
*sk
, int cmd
, void __user
*user
, unsigned int len
)
2311 struct net
*net
= sock_net(sk
);
2313 unsigned char arg
[MAX_ARG_LEN
];
2314 struct ip_vs_service_user
*usvc_compat
;
2315 struct ip_vs_service_user_kern usvc
;
2316 struct ip_vs_service
*svc
;
2317 struct ip_vs_dest_user
*udest_compat
;
2318 struct ip_vs_dest_user_kern udest
;
2319 struct netns_ipvs
*ipvs
= net_ipvs(net
);
2321 if (!ns_capable(sock_net(sk
)->user_ns
, CAP_NET_ADMIN
))
2324 if (cmd
< IP_VS_BASE_CTL
|| cmd
> IP_VS_SO_SET_MAX
)
2326 if (len
< 0 || len
> MAX_ARG_LEN
)
2328 if (len
!= set_arglen
[SET_CMDID(cmd
)]) {
2329 pr_err("set_ctl: len %u != %u\n",
2330 len
, set_arglen
[SET_CMDID(cmd
)]);
2334 if (copy_from_user(arg
, user
, len
) != 0)
2337 /* increase the module use count */
2338 ip_vs_use_count_inc();
2340 /* Handle daemons since they have another lock */
2341 if (cmd
== IP_VS_SO_SET_STARTDAEMON
||
2342 cmd
== IP_VS_SO_SET_STOPDAEMON
) {
2343 struct ip_vs_daemon_user
*dm
= (struct ip_vs_daemon_user
*)arg
;
2345 if (mutex_lock_interruptible(&ipvs
->sync_mutex
)) {
2349 if (cmd
== IP_VS_SO_SET_STARTDAEMON
)
2350 ret
= start_sync_thread(net
, dm
->state
, dm
->mcast_ifn
,
2353 ret
= stop_sync_thread(net
, dm
->state
);
2354 mutex_unlock(&ipvs
->sync_mutex
);
2358 if (mutex_lock_interruptible(&__ip_vs_mutex
)) {
2363 if (cmd
== IP_VS_SO_SET_FLUSH
) {
2364 /* Flush the virtual service */
2365 ret
= ip_vs_flush(net
, false);
2367 } else if (cmd
== IP_VS_SO_SET_TIMEOUT
) {
2368 /* Set timeout values for (tcp tcpfin udp) */
2369 ret
= ip_vs_set_timeout(net
, (struct ip_vs_timeout_user
*)arg
);
2373 usvc_compat
= (struct ip_vs_service_user
*)arg
;
2374 udest_compat
= (struct ip_vs_dest_user
*)(usvc_compat
+ 1);
2376 /* We only use the new structs internally, so copy userspace compat
2377 * structs to extended internal versions */
2378 ip_vs_copy_usvc_compat(&usvc
, usvc_compat
);
2379 ip_vs_copy_udest_compat(&udest
, udest_compat
);
2381 if (cmd
== IP_VS_SO_SET_ZERO
) {
2382 /* if no service address is set, zero counters in all */
2383 if (!usvc
.fwmark
&& !usvc
.addr
.ip
&& !usvc
.port
) {
2384 ret
= ip_vs_zero_all(net
);
2389 /* Check for valid protocol: TCP or UDP or SCTP, even for fwmark!=0 */
2390 if (usvc
.protocol
!= IPPROTO_TCP
&& usvc
.protocol
!= IPPROTO_UDP
&&
2391 usvc
.protocol
!= IPPROTO_SCTP
) {
2392 pr_err("set_ctl: invalid protocol: %d %pI4:%d %s\n",
2393 usvc
.protocol
, &usvc
.addr
.ip
,
2394 ntohs(usvc
.port
), usvc
.sched_name
);
2399 /* Lookup the exact service by <protocol, addr, port> or fwmark */
2401 if (usvc
.fwmark
== 0)
2402 svc
= __ip_vs_service_find(net
, usvc
.af
, usvc
.protocol
,
2403 &usvc
.addr
, usvc
.port
);
2405 svc
= __ip_vs_svc_fwm_find(net
, usvc
.af
, usvc
.fwmark
);
2408 if (cmd
!= IP_VS_SO_SET_ADD
2409 && (svc
== NULL
|| svc
->protocol
!= usvc
.protocol
)) {
2415 case IP_VS_SO_SET_ADD
:
2419 ret
= ip_vs_add_service(net
, &usvc
, &svc
);
2421 case IP_VS_SO_SET_EDIT
:
2422 ret
= ip_vs_edit_service(svc
, &usvc
);
2424 case IP_VS_SO_SET_DEL
:
2425 ret
= ip_vs_del_service(svc
);
2429 case IP_VS_SO_SET_ZERO
:
2430 ret
= ip_vs_zero_service(svc
);
2432 case IP_VS_SO_SET_ADDDEST
:
2433 ret
= ip_vs_add_dest(svc
, &udest
);
2435 case IP_VS_SO_SET_EDITDEST
:
2436 ret
= ip_vs_edit_dest(svc
, &udest
);
2438 case IP_VS_SO_SET_DELDEST
:
2439 ret
= ip_vs_del_dest(svc
, &udest
);
2446 mutex_unlock(&__ip_vs_mutex
);
2448 /* decrease the module use count */
2449 ip_vs_use_count_dec();
2456 ip_vs_copy_service(struct ip_vs_service_entry
*dst
, struct ip_vs_service
*src
)
2458 struct ip_vs_scheduler
*sched
;
2460 sched
= rcu_dereference_protected(src
->scheduler
, 1);
2461 dst
->protocol
= src
->protocol
;
2462 dst
->addr
= src
->addr
.ip
;
2463 dst
->port
= src
->port
;
2464 dst
->fwmark
= src
->fwmark
;
2465 strlcpy(dst
->sched_name
, sched
->name
, sizeof(dst
->sched_name
));
2466 dst
->flags
= src
->flags
;
2467 dst
->timeout
= src
->timeout
/ HZ
;
2468 dst
->netmask
= src
->netmask
;
2469 dst
->num_dests
= src
->num_dests
;
2470 ip_vs_copy_stats(&dst
->stats
, &src
->stats
);
2474 __ip_vs_get_service_entries(struct net
*net
,
2475 const struct ip_vs_get_services
*get
,
2476 struct ip_vs_get_services __user
*uptr
)
2479 struct ip_vs_service
*svc
;
2480 struct ip_vs_service_entry entry
;
2483 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
2484 hlist_for_each_entry(svc
, &ip_vs_svc_table
[idx
], s_list
) {
2485 /* Only expose IPv4 entries to old interface */
2486 if (svc
->af
!= AF_INET
|| !net_eq(svc
->net
, net
))
2489 if (count
>= get
->num_services
)
2491 memset(&entry
, 0, sizeof(entry
));
2492 ip_vs_copy_service(&entry
, svc
);
2493 if (copy_to_user(&uptr
->entrytable
[count
],
2494 &entry
, sizeof(entry
))) {
2502 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
2503 hlist_for_each_entry(svc
, &ip_vs_svc_fwm_table
[idx
], f_list
) {
2504 /* Only expose IPv4 entries to old interface */
2505 if (svc
->af
!= AF_INET
|| !net_eq(svc
->net
, net
))
2508 if (count
>= get
->num_services
)
2510 memset(&entry
, 0, sizeof(entry
));
2511 ip_vs_copy_service(&entry
, svc
);
2512 if (copy_to_user(&uptr
->entrytable
[count
],
2513 &entry
, sizeof(entry
))) {
2525 __ip_vs_get_dest_entries(struct net
*net
, const struct ip_vs_get_dests
*get
,
2526 struct ip_vs_get_dests __user
*uptr
)
2528 struct ip_vs_service
*svc
;
2529 union nf_inet_addr addr
= { .ip
= get
->addr
};
2534 svc
= __ip_vs_svc_fwm_find(net
, AF_INET
, get
->fwmark
);
2536 svc
= __ip_vs_service_find(net
, AF_INET
, get
->protocol
, &addr
,
2542 struct ip_vs_dest
*dest
;
2543 struct ip_vs_dest_entry entry
;
2545 list_for_each_entry(dest
, &svc
->destinations
, n_list
) {
2546 if (count
>= get
->num_dests
)
2549 entry
.addr
= dest
->addr
.ip
;
2550 entry
.port
= dest
->port
;
2551 entry
.conn_flags
= atomic_read(&dest
->conn_flags
);
2552 entry
.weight
= atomic_read(&dest
->weight
);
2553 entry
.u_threshold
= dest
->u_threshold
;
2554 entry
.l_threshold
= dest
->l_threshold
;
2555 entry
.activeconns
= atomic_read(&dest
->activeconns
);
2556 entry
.inactconns
= atomic_read(&dest
->inactconns
);
2557 entry
.persistconns
= atomic_read(&dest
->persistconns
);
2558 ip_vs_copy_stats(&entry
.stats
, &dest
->stats
);
2559 if (copy_to_user(&uptr
->entrytable
[count
],
2560 &entry
, sizeof(entry
))) {
2572 __ip_vs_get_timeouts(struct net
*net
, struct ip_vs_timeout_user
*u
)
2574 #if defined(CONFIG_IP_VS_PROTO_TCP) || defined(CONFIG_IP_VS_PROTO_UDP)
2575 struct ip_vs_proto_data
*pd
;
2578 memset(u
, 0, sizeof (*u
));
2580 #ifdef CONFIG_IP_VS_PROTO_TCP
2581 pd
= ip_vs_proto_data_get(net
, IPPROTO_TCP
);
2582 u
->tcp_timeout
= pd
->timeout_table
[IP_VS_TCP_S_ESTABLISHED
] / HZ
;
2583 u
->tcp_fin_timeout
= pd
->timeout_table
[IP_VS_TCP_S_FIN_WAIT
] / HZ
;
2585 #ifdef CONFIG_IP_VS_PROTO_UDP
2586 pd
= ip_vs_proto_data_get(net
, IPPROTO_UDP
);
2588 pd
->timeout_table
[IP_VS_UDP_S_NORMAL
] / HZ
;
2593 #define GET_CMDID(cmd) (cmd - IP_VS_BASE_CTL)
2594 #define GET_INFO_ARG_LEN (sizeof(struct ip_vs_getinfo))
2595 #define GET_SERVICES_ARG_LEN (sizeof(struct ip_vs_get_services))
2596 #define GET_SERVICE_ARG_LEN (sizeof(struct ip_vs_service_entry))
2597 #define GET_DESTS_ARG_LEN (sizeof(struct ip_vs_get_dests))
2598 #define GET_TIMEOUT_ARG_LEN (sizeof(struct ip_vs_timeout_user))
2599 #define GET_DAEMON_ARG_LEN (sizeof(struct ip_vs_daemon_user) * 2)
2601 static const unsigned char get_arglen
[GET_CMDID(IP_VS_SO_GET_MAX
)+1] = {
2602 [GET_CMDID(IP_VS_SO_GET_VERSION
)] = 64,
2603 [GET_CMDID(IP_VS_SO_GET_INFO
)] = GET_INFO_ARG_LEN
,
2604 [GET_CMDID(IP_VS_SO_GET_SERVICES
)] = GET_SERVICES_ARG_LEN
,
2605 [GET_CMDID(IP_VS_SO_GET_SERVICE
)] = GET_SERVICE_ARG_LEN
,
2606 [GET_CMDID(IP_VS_SO_GET_DESTS
)] = GET_DESTS_ARG_LEN
,
2607 [GET_CMDID(IP_VS_SO_GET_TIMEOUT
)] = GET_TIMEOUT_ARG_LEN
,
2608 [GET_CMDID(IP_VS_SO_GET_DAEMON
)] = GET_DAEMON_ARG_LEN
,
2612 do_ip_vs_get_ctl(struct sock
*sk
, int cmd
, void __user
*user
, int *len
)
2614 unsigned char arg
[128];
2616 unsigned int copylen
;
2617 struct net
*net
= sock_net(sk
);
2618 struct netns_ipvs
*ipvs
= net_ipvs(net
);
2621 if (!ns_capable(sock_net(sk
)->user_ns
, CAP_NET_ADMIN
))
2624 if (cmd
< IP_VS_BASE_CTL
|| cmd
> IP_VS_SO_GET_MAX
)
2627 if (*len
< get_arglen
[GET_CMDID(cmd
)]) {
2628 pr_err("get_ctl: len %u < %u\n",
2629 *len
, get_arglen
[GET_CMDID(cmd
)]);
2633 copylen
= get_arglen
[GET_CMDID(cmd
)];
2637 if (copy_from_user(arg
, user
, copylen
) != 0)
2640 * Handle daemons first since it has its own locking
2642 if (cmd
== IP_VS_SO_GET_DAEMON
) {
2643 struct ip_vs_daemon_user d
[2];
2645 memset(&d
, 0, sizeof(d
));
2646 if (mutex_lock_interruptible(&ipvs
->sync_mutex
))
2647 return -ERESTARTSYS
;
2649 if (ipvs
->sync_state
& IP_VS_STATE_MASTER
) {
2650 d
[0].state
= IP_VS_STATE_MASTER
;
2651 strlcpy(d
[0].mcast_ifn
, ipvs
->master_mcast_ifn
,
2652 sizeof(d
[0].mcast_ifn
));
2653 d
[0].syncid
= ipvs
->master_syncid
;
2655 if (ipvs
->sync_state
& IP_VS_STATE_BACKUP
) {
2656 d
[1].state
= IP_VS_STATE_BACKUP
;
2657 strlcpy(d
[1].mcast_ifn
, ipvs
->backup_mcast_ifn
,
2658 sizeof(d
[1].mcast_ifn
));
2659 d
[1].syncid
= ipvs
->backup_syncid
;
2661 if (copy_to_user(user
, &d
, sizeof(d
)) != 0)
2663 mutex_unlock(&ipvs
->sync_mutex
);
2667 if (mutex_lock_interruptible(&__ip_vs_mutex
))
2668 return -ERESTARTSYS
;
2671 case IP_VS_SO_GET_VERSION
:
2675 sprintf(buf
, "IP Virtual Server version %d.%d.%d (size=%d)",
2676 NVERSION(IP_VS_VERSION_CODE
), ip_vs_conn_tab_size
);
2677 if (copy_to_user(user
, buf
, strlen(buf
)+1) != 0) {
2681 *len
= strlen(buf
)+1;
2685 case IP_VS_SO_GET_INFO
:
2687 struct ip_vs_getinfo info
;
2688 info
.version
= IP_VS_VERSION_CODE
;
2689 info
.size
= ip_vs_conn_tab_size
;
2690 info
.num_services
= ipvs
->num_services
;
2691 if (copy_to_user(user
, &info
, sizeof(info
)) != 0)
2696 case IP_VS_SO_GET_SERVICES
:
2698 struct ip_vs_get_services
*get
;
2701 get
= (struct ip_vs_get_services
*)arg
;
2702 size
= sizeof(*get
) +
2703 sizeof(struct ip_vs_service_entry
) * get
->num_services
;
2705 pr_err("length: %u != %u\n", *len
, size
);
2709 ret
= __ip_vs_get_service_entries(net
, get
, user
);
2713 case IP_VS_SO_GET_SERVICE
:
2715 struct ip_vs_service_entry
*entry
;
2716 struct ip_vs_service
*svc
;
2717 union nf_inet_addr addr
;
2719 entry
= (struct ip_vs_service_entry
*)arg
;
2720 addr
.ip
= entry
->addr
;
2723 svc
= __ip_vs_svc_fwm_find(net
, AF_INET
, entry
->fwmark
);
2725 svc
= __ip_vs_service_find(net
, AF_INET
,
2726 entry
->protocol
, &addr
,
2730 ip_vs_copy_service(entry
, svc
);
2731 if (copy_to_user(user
, entry
, sizeof(*entry
)) != 0)
2738 case IP_VS_SO_GET_DESTS
:
2740 struct ip_vs_get_dests
*get
;
2743 get
= (struct ip_vs_get_dests
*)arg
;
2744 size
= sizeof(*get
) +
2745 sizeof(struct ip_vs_dest_entry
) * get
->num_dests
;
2747 pr_err("length: %u != %u\n", *len
, size
);
2751 ret
= __ip_vs_get_dest_entries(net
, get
, user
);
2755 case IP_VS_SO_GET_TIMEOUT
:
2757 struct ip_vs_timeout_user t
;
2759 __ip_vs_get_timeouts(net
, &t
);
2760 if (copy_to_user(user
, &t
, sizeof(t
)) != 0)
2770 mutex_unlock(&__ip_vs_mutex
);
2775 static struct nf_sockopt_ops ip_vs_sockopts
= {
2777 .set_optmin
= IP_VS_BASE_CTL
,
2778 .set_optmax
= IP_VS_SO_SET_MAX
+1,
2779 .set
= do_ip_vs_set_ctl
,
2780 .get_optmin
= IP_VS_BASE_CTL
,
2781 .get_optmax
= IP_VS_SO_GET_MAX
+1,
2782 .get
= do_ip_vs_get_ctl
,
2783 .owner
= THIS_MODULE
,
2787 * Generic Netlink interface
2790 /* IPVS genetlink family */
2791 static struct genl_family ip_vs_genl_family
= {
2792 .id
= GENL_ID_GENERATE
,
2794 .name
= IPVS_GENL_NAME
,
2795 .version
= IPVS_GENL_VERSION
,
2796 .maxattr
= IPVS_CMD_MAX
,
2797 .netnsok
= true, /* Make ipvsadm to work on netns */
2800 /* Policy used for first-level command attributes */
2801 static const struct nla_policy ip_vs_cmd_policy
[IPVS_CMD_ATTR_MAX
+ 1] = {
2802 [IPVS_CMD_ATTR_SERVICE
] = { .type
= NLA_NESTED
},
2803 [IPVS_CMD_ATTR_DEST
] = { .type
= NLA_NESTED
},
2804 [IPVS_CMD_ATTR_DAEMON
] = { .type
= NLA_NESTED
},
2805 [IPVS_CMD_ATTR_TIMEOUT_TCP
] = { .type
= NLA_U32
},
2806 [IPVS_CMD_ATTR_TIMEOUT_TCP_FIN
] = { .type
= NLA_U32
},
2807 [IPVS_CMD_ATTR_TIMEOUT_UDP
] = { .type
= NLA_U32
},
2810 /* Policy used for attributes in nested attribute IPVS_CMD_ATTR_DAEMON */
2811 static const struct nla_policy ip_vs_daemon_policy
[IPVS_DAEMON_ATTR_MAX
+ 1] = {
2812 [IPVS_DAEMON_ATTR_STATE
] = { .type
= NLA_U32
},
2813 [IPVS_DAEMON_ATTR_MCAST_IFN
] = { .type
= NLA_NUL_STRING
,
2814 .len
= IP_VS_IFNAME_MAXLEN
},
2815 [IPVS_DAEMON_ATTR_SYNC_ID
] = { .type
= NLA_U32
},
2818 /* Policy used for attributes in nested attribute IPVS_CMD_ATTR_SERVICE */
2819 static const struct nla_policy ip_vs_svc_policy
[IPVS_SVC_ATTR_MAX
+ 1] = {
2820 [IPVS_SVC_ATTR_AF
] = { .type
= NLA_U16
},
2821 [IPVS_SVC_ATTR_PROTOCOL
] = { .type
= NLA_U16
},
2822 [IPVS_SVC_ATTR_ADDR
] = { .type
= NLA_BINARY
,
2823 .len
= sizeof(union nf_inet_addr
) },
2824 [IPVS_SVC_ATTR_PORT
] = { .type
= NLA_U16
},
2825 [IPVS_SVC_ATTR_FWMARK
] = { .type
= NLA_U32
},
2826 [IPVS_SVC_ATTR_SCHED_NAME
] = { .type
= NLA_NUL_STRING
,
2827 .len
= IP_VS_SCHEDNAME_MAXLEN
},
2828 [IPVS_SVC_ATTR_PE_NAME
] = { .type
= NLA_NUL_STRING
,
2829 .len
= IP_VS_PENAME_MAXLEN
},
2830 [IPVS_SVC_ATTR_FLAGS
] = { .type
= NLA_BINARY
,
2831 .len
= sizeof(struct ip_vs_flags
) },
2832 [IPVS_SVC_ATTR_TIMEOUT
] = { .type
= NLA_U32
},
2833 [IPVS_SVC_ATTR_NETMASK
] = { .type
= NLA_U32
},
2834 [IPVS_SVC_ATTR_STATS
] = { .type
= NLA_NESTED
},
2837 /* Policy used for attributes in nested attribute IPVS_CMD_ATTR_DEST */
2838 static const struct nla_policy ip_vs_dest_policy
[IPVS_DEST_ATTR_MAX
+ 1] = {
2839 [IPVS_DEST_ATTR_ADDR
] = { .type
= NLA_BINARY
,
2840 .len
= sizeof(union nf_inet_addr
) },
2841 [IPVS_DEST_ATTR_PORT
] = { .type
= NLA_U16
},
2842 [IPVS_DEST_ATTR_FWD_METHOD
] = { .type
= NLA_U32
},
2843 [IPVS_DEST_ATTR_WEIGHT
] = { .type
= NLA_U32
},
2844 [IPVS_DEST_ATTR_U_THRESH
] = { .type
= NLA_U32
},
2845 [IPVS_DEST_ATTR_L_THRESH
] = { .type
= NLA_U32
},
2846 [IPVS_DEST_ATTR_ACTIVE_CONNS
] = { .type
= NLA_U32
},
2847 [IPVS_DEST_ATTR_INACT_CONNS
] = { .type
= NLA_U32
},
2848 [IPVS_DEST_ATTR_PERSIST_CONNS
] = { .type
= NLA_U32
},
2849 [IPVS_DEST_ATTR_STATS
] = { .type
= NLA_NESTED
},
2852 static int ip_vs_genl_fill_stats(struct sk_buff
*skb
, int container_type
,
2853 struct ip_vs_stats
*stats
)
2855 struct ip_vs_stats_user ustats
;
2856 struct nlattr
*nl_stats
= nla_nest_start(skb
, container_type
);
2860 ip_vs_copy_stats(&ustats
, stats
);
2862 if (nla_put_u32(skb
, IPVS_STATS_ATTR_CONNS
, ustats
.conns
) ||
2863 nla_put_u32(skb
, IPVS_STATS_ATTR_INPKTS
, ustats
.inpkts
) ||
2864 nla_put_u32(skb
, IPVS_STATS_ATTR_OUTPKTS
, ustats
.outpkts
) ||
2865 nla_put_u64(skb
, IPVS_STATS_ATTR_INBYTES
, ustats
.inbytes
) ||
2866 nla_put_u64(skb
, IPVS_STATS_ATTR_OUTBYTES
, ustats
.outbytes
) ||
2867 nla_put_u32(skb
, IPVS_STATS_ATTR_CPS
, ustats
.cps
) ||
2868 nla_put_u32(skb
, IPVS_STATS_ATTR_INPPS
, ustats
.inpps
) ||
2869 nla_put_u32(skb
, IPVS_STATS_ATTR_OUTPPS
, ustats
.outpps
) ||
2870 nla_put_u32(skb
, IPVS_STATS_ATTR_INBPS
, ustats
.inbps
) ||
2871 nla_put_u32(skb
, IPVS_STATS_ATTR_OUTBPS
, ustats
.outbps
))
2872 goto nla_put_failure
;
2873 nla_nest_end(skb
, nl_stats
);
2878 nla_nest_cancel(skb
, nl_stats
);
2882 static int ip_vs_genl_fill_service(struct sk_buff
*skb
,
2883 struct ip_vs_service
*svc
)
2885 struct ip_vs_scheduler
*sched
;
2886 struct ip_vs_pe
*pe
;
2887 struct nlattr
*nl_service
;
2888 struct ip_vs_flags flags
= { .flags
= svc
->flags
,
2891 nl_service
= nla_nest_start(skb
, IPVS_CMD_ATTR_SERVICE
);
2895 if (nla_put_u16(skb
, IPVS_SVC_ATTR_AF
, svc
->af
))
2896 goto nla_put_failure
;
2898 if (nla_put_u32(skb
, IPVS_SVC_ATTR_FWMARK
, svc
->fwmark
))
2899 goto nla_put_failure
;
2901 if (nla_put_u16(skb
, IPVS_SVC_ATTR_PROTOCOL
, svc
->protocol
) ||
2902 nla_put(skb
, IPVS_SVC_ATTR_ADDR
, sizeof(svc
->addr
), &svc
->addr
) ||
2903 nla_put_be16(skb
, IPVS_SVC_ATTR_PORT
, svc
->port
))
2904 goto nla_put_failure
;
2907 sched
= rcu_dereference_protected(svc
->scheduler
, 1);
2908 pe
= rcu_dereference_protected(svc
->pe
, 1);
2909 if (nla_put_string(skb
, IPVS_SVC_ATTR_SCHED_NAME
, sched
->name
) ||
2910 (pe
&& nla_put_string(skb
, IPVS_SVC_ATTR_PE_NAME
, pe
->name
)) ||
2911 nla_put(skb
, IPVS_SVC_ATTR_FLAGS
, sizeof(flags
), &flags
) ||
2912 nla_put_u32(skb
, IPVS_SVC_ATTR_TIMEOUT
, svc
->timeout
/ HZ
) ||
2913 nla_put_be32(skb
, IPVS_SVC_ATTR_NETMASK
, svc
->netmask
))
2914 goto nla_put_failure
;
2915 if (ip_vs_genl_fill_stats(skb
, IPVS_SVC_ATTR_STATS
, &svc
->stats
))
2916 goto nla_put_failure
;
2918 nla_nest_end(skb
, nl_service
);
2923 nla_nest_cancel(skb
, nl_service
);
2927 static int ip_vs_genl_dump_service(struct sk_buff
*skb
,
2928 struct ip_vs_service
*svc
,
2929 struct netlink_callback
*cb
)
2933 hdr
= genlmsg_put(skb
, NETLINK_CB(cb
->skb
).portid
, cb
->nlh
->nlmsg_seq
,
2934 &ip_vs_genl_family
, NLM_F_MULTI
,
2935 IPVS_CMD_NEW_SERVICE
);
2939 if (ip_vs_genl_fill_service(skb
, svc
) < 0)
2940 goto nla_put_failure
;
2942 return genlmsg_end(skb
, hdr
);
2945 genlmsg_cancel(skb
, hdr
);
2949 static int ip_vs_genl_dump_services(struct sk_buff
*skb
,
2950 struct netlink_callback
*cb
)
2953 int start
= cb
->args
[0];
2954 struct ip_vs_service
*svc
;
2955 struct net
*net
= skb_sknet(skb
);
2957 mutex_lock(&__ip_vs_mutex
);
2958 for (i
= 0; i
< IP_VS_SVC_TAB_SIZE
; i
++) {
2959 hlist_for_each_entry(svc
, &ip_vs_svc_table
[i
], s_list
) {
2960 if (++idx
<= start
|| !net_eq(svc
->net
, net
))
2962 if (ip_vs_genl_dump_service(skb
, svc
, cb
) < 0) {
2964 goto nla_put_failure
;
2969 for (i
= 0; i
< IP_VS_SVC_TAB_SIZE
; i
++) {
2970 hlist_for_each_entry(svc
, &ip_vs_svc_fwm_table
[i
], f_list
) {
2971 if (++idx
<= start
|| !net_eq(svc
->net
, net
))
2973 if (ip_vs_genl_dump_service(skb
, svc
, cb
) < 0) {
2975 goto nla_put_failure
;
2981 mutex_unlock(&__ip_vs_mutex
);
2987 static int ip_vs_genl_parse_service(struct net
*net
,
2988 struct ip_vs_service_user_kern
*usvc
,
2989 struct nlattr
*nla
, int full_entry
,
2990 struct ip_vs_service
**ret_svc
)
2992 struct nlattr
*attrs
[IPVS_SVC_ATTR_MAX
+ 1];
2993 struct nlattr
*nla_af
, *nla_port
, *nla_fwmark
, *nla_protocol
, *nla_addr
;
2994 struct ip_vs_service
*svc
;
2996 /* Parse mandatory identifying service fields first */
2998 nla_parse_nested(attrs
, IPVS_SVC_ATTR_MAX
, nla
, ip_vs_svc_policy
))
3001 nla_af
= attrs
[IPVS_SVC_ATTR_AF
];
3002 nla_protocol
= attrs
[IPVS_SVC_ATTR_PROTOCOL
];
3003 nla_addr
= attrs
[IPVS_SVC_ATTR_ADDR
];
3004 nla_port
= attrs
[IPVS_SVC_ATTR_PORT
];
3005 nla_fwmark
= attrs
[IPVS_SVC_ATTR_FWMARK
];
3007 if (!(nla_af
&& (nla_fwmark
|| (nla_port
&& nla_protocol
&& nla_addr
))))
3010 memset(usvc
, 0, sizeof(*usvc
));
3012 usvc
->af
= nla_get_u16(nla_af
);
3013 #ifdef CONFIG_IP_VS_IPV6
3014 if (usvc
->af
!= AF_INET
&& usvc
->af
!= AF_INET6
)
3016 if (usvc
->af
!= AF_INET
)
3018 return -EAFNOSUPPORT
;
3021 usvc
->protocol
= IPPROTO_TCP
;
3022 usvc
->fwmark
= nla_get_u32(nla_fwmark
);
3024 usvc
->protocol
= nla_get_u16(nla_protocol
);
3025 nla_memcpy(&usvc
->addr
, nla_addr
, sizeof(usvc
->addr
));
3026 usvc
->port
= nla_get_be16(nla_port
);
3032 svc
= __ip_vs_svc_fwm_find(net
, usvc
->af
, usvc
->fwmark
);
3034 svc
= __ip_vs_service_find(net
, usvc
->af
, usvc
->protocol
,
3035 &usvc
->addr
, usvc
->port
);
3039 /* If a full entry was requested, check for the additional fields */
3041 struct nlattr
*nla_sched
, *nla_flags
, *nla_pe
, *nla_timeout
,
3043 struct ip_vs_flags flags
;
3045 nla_sched
= attrs
[IPVS_SVC_ATTR_SCHED_NAME
];
3046 nla_pe
= attrs
[IPVS_SVC_ATTR_PE_NAME
];
3047 nla_flags
= attrs
[IPVS_SVC_ATTR_FLAGS
];
3048 nla_timeout
= attrs
[IPVS_SVC_ATTR_TIMEOUT
];
3049 nla_netmask
= attrs
[IPVS_SVC_ATTR_NETMASK
];
3051 if (!(nla_sched
&& nla_flags
&& nla_timeout
&& nla_netmask
))
3054 nla_memcpy(&flags
, nla_flags
, sizeof(flags
));
3056 /* prefill flags from service if it already exists */
3058 usvc
->flags
= svc
->flags
;
3060 /* set new flags from userland */
3061 usvc
->flags
= (usvc
->flags
& ~flags
.mask
) |
3062 (flags
.flags
& flags
.mask
);
3063 usvc
->sched_name
= nla_data(nla_sched
);
3064 usvc
->pe_name
= nla_pe
? nla_data(nla_pe
) : NULL
;
3065 usvc
->timeout
= nla_get_u32(nla_timeout
);
3066 usvc
->netmask
= nla_get_be32(nla_netmask
);
3072 static struct ip_vs_service
*ip_vs_genl_find_service(struct net
*net
,
3075 struct ip_vs_service_user_kern usvc
;
3076 struct ip_vs_service
*svc
;
3079 ret
= ip_vs_genl_parse_service(net
, &usvc
, nla
, 0, &svc
);
3080 return ret
? ERR_PTR(ret
) : svc
;
3083 static int ip_vs_genl_fill_dest(struct sk_buff
*skb
, struct ip_vs_dest
*dest
)
3085 struct nlattr
*nl_dest
;
3087 nl_dest
= nla_nest_start(skb
, IPVS_CMD_ATTR_DEST
);
3091 if (nla_put(skb
, IPVS_DEST_ATTR_ADDR
, sizeof(dest
->addr
), &dest
->addr
) ||
3092 nla_put_be16(skb
, IPVS_DEST_ATTR_PORT
, dest
->port
) ||
3093 nla_put_u32(skb
, IPVS_DEST_ATTR_FWD_METHOD
,
3094 (atomic_read(&dest
->conn_flags
) &
3095 IP_VS_CONN_F_FWD_MASK
)) ||
3096 nla_put_u32(skb
, IPVS_DEST_ATTR_WEIGHT
,
3097 atomic_read(&dest
->weight
)) ||
3098 nla_put_u32(skb
, IPVS_DEST_ATTR_U_THRESH
, dest
->u_threshold
) ||
3099 nla_put_u32(skb
, IPVS_DEST_ATTR_L_THRESH
, dest
->l_threshold
) ||
3100 nla_put_u32(skb
, IPVS_DEST_ATTR_ACTIVE_CONNS
,
3101 atomic_read(&dest
->activeconns
)) ||
3102 nla_put_u32(skb
, IPVS_DEST_ATTR_INACT_CONNS
,
3103 atomic_read(&dest
->inactconns
)) ||
3104 nla_put_u32(skb
, IPVS_DEST_ATTR_PERSIST_CONNS
,
3105 atomic_read(&dest
->persistconns
)))
3106 goto nla_put_failure
;
3107 if (ip_vs_genl_fill_stats(skb
, IPVS_DEST_ATTR_STATS
, &dest
->stats
))
3108 goto nla_put_failure
;
3110 nla_nest_end(skb
, nl_dest
);
3115 nla_nest_cancel(skb
, nl_dest
);
3119 static int ip_vs_genl_dump_dest(struct sk_buff
*skb
, struct ip_vs_dest
*dest
,
3120 struct netlink_callback
*cb
)
3124 hdr
= genlmsg_put(skb
, NETLINK_CB(cb
->skb
).portid
, cb
->nlh
->nlmsg_seq
,
3125 &ip_vs_genl_family
, NLM_F_MULTI
,
3130 if (ip_vs_genl_fill_dest(skb
, dest
) < 0)
3131 goto nla_put_failure
;
3133 return genlmsg_end(skb
, hdr
);
3136 genlmsg_cancel(skb
, hdr
);
3140 static int ip_vs_genl_dump_dests(struct sk_buff
*skb
,
3141 struct netlink_callback
*cb
)
3144 int start
= cb
->args
[0];
3145 struct ip_vs_service
*svc
;
3146 struct ip_vs_dest
*dest
;
3147 struct nlattr
*attrs
[IPVS_CMD_ATTR_MAX
+ 1];
3148 struct net
*net
= skb_sknet(skb
);
3150 mutex_lock(&__ip_vs_mutex
);
3152 /* Try to find the service for which to dump destinations */
3153 if (nlmsg_parse(cb
->nlh
, GENL_HDRLEN
, attrs
,
3154 IPVS_CMD_ATTR_MAX
, ip_vs_cmd_policy
))
3158 svc
= ip_vs_genl_find_service(net
, attrs
[IPVS_CMD_ATTR_SERVICE
]);
3159 if (IS_ERR(svc
) || svc
== NULL
)
3162 /* Dump the destinations */
3163 list_for_each_entry(dest
, &svc
->destinations
, n_list
) {
3166 if (ip_vs_genl_dump_dest(skb
, dest
, cb
) < 0) {
3168 goto nla_put_failure
;
3176 mutex_unlock(&__ip_vs_mutex
);
3181 static int ip_vs_genl_parse_dest(struct ip_vs_dest_user_kern
*udest
,
3182 struct nlattr
*nla
, int full_entry
)
3184 struct nlattr
*attrs
[IPVS_DEST_ATTR_MAX
+ 1];
3185 struct nlattr
*nla_addr
, *nla_port
;
3187 /* Parse mandatory identifying destination fields first */
3189 nla_parse_nested(attrs
, IPVS_DEST_ATTR_MAX
, nla
, ip_vs_dest_policy
))
3192 nla_addr
= attrs
[IPVS_DEST_ATTR_ADDR
];
3193 nla_port
= attrs
[IPVS_DEST_ATTR_PORT
];
3195 if (!(nla_addr
&& nla_port
))
3198 memset(udest
, 0, sizeof(*udest
));
3200 nla_memcpy(&udest
->addr
, nla_addr
, sizeof(udest
->addr
));
3201 udest
->port
= nla_get_be16(nla_port
);
3203 /* If a full entry was requested, check for the additional fields */
3205 struct nlattr
*nla_fwd
, *nla_weight
, *nla_u_thresh
,
3208 nla_fwd
= attrs
[IPVS_DEST_ATTR_FWD_METHOD
];
3209 nla_weight
= attrs
[IPVS_DEST_ATTR_WEIGHT
];
3210 nla_u_thresh
= attrs
[IPVS_DEST_ATTR_U_THRESH
];
3211 nla_l_thresh
= attrs
[IPVS_DEST_ATTR_L_THRESH
];
3213 if (!(nla_fwd
&& nla_weight
&& nla_u_thresh
&& nla_l_thresh
))
3216 udest
->conn_flags
= nla_get_u32(nla_fwd
)
3217 & IP_VS_CONN_F_FWD_MASK
;
3218 udest
->weight
= nla_get_u32(nla_weight
);
3219 udest
->u_threshold
= nla_get_u32(nla_u_thresh
);
3220 udest
->l_threshold
= nla_get_u32(nla_l_thresh
);
3226 static int ip_vs_genl_fill_daemon(struct sk_buff
*skb
, __u32 state
,
3227 const char *mcast_ifn
, __u32 syncid
)
3229 struct nlattr
*nl_daemon
;
3231 nl_daemon
= nla_nest_start(skb
, IPVS_CMD_ATTR_DAEMON
);
3235 if (nla_put_u32(skb
, IPVS_DAEMON_ATTR_STATE
, state
) ||
3236 nla_put_string(skb
, IPVS_DAEMON_ATTR_MCAST_IFN
, mcast_ifn
) ||
3237 nla_put_u32(skb
, IPVS_DAEMON_ATTR_SYNC_ID
, syncid
))
3238 goto nla_put_failure
;
3239 nla_nest_end(skb
, nl_daemon
);
3244 nla_nest_cancel(skb
, nl_daemon
);
3248 static int ip_vs_genl_dump_daemon(struct sk_buff
*skb
, __u32 state
,
3249 const char *mcast_ifn
, __u32 syncid
,
3250 struct netlink_callback
*cb
)
3253 hdr
= genlmsg_put(skb
, NETLINK_CB(cb
->skb
).portid
, cb
->nlh
->nlmsg_seq
,
3254 &ip_vs_genl_family
, NLM_F_MULTI
,
3255 IPVS_CMD_NEW_DAEMON
);
3259 if (ip_vs_genl_fill_daemon(skb
, state
, mcast_ifn
, syncid
))
3260 goto nla_put_failure
;
3262 return genlmsg_end(skb
, hdr
);
3265 genlmsg_cancel(skb
, hdr
);
3269 static int ip_vs_genl_dump_daemons(struct sk_buff
*skb
,
3270 struct netlink_callback
*cb
)
3272 struct net
*net
= skb_sknet(skb
);
3273 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3275 mutex_lock(&ipvs
->sync_mutex
);
3276 if ((ipvs
->sync_state
& IP_VS_STATE_MASTER
) && !cb
->args
[0]) {
3277 if (ip_vs_genl_dump_daemon(skb
, IP_VS_STATE_MASTER
,
3278 ipvs
->master_mcast_ifn
,
3279 ipvs
->master_syncid
, cb
) < 0)
3280 goto nla_put_failure
;
3285 if ((ipvs
->sync_state
& IP_VS_STATE_BACKUP
) && !cb
->args
[1]) {
3286 if (ip_vs_genl_dump_daemon(skb
, IP_VS_STATE_BACKUP
,
3287 ipvs
->backup_mcast_ifn
,
3288 ipvs
->backup_syncid
, cb
) < 0)
3289 goto nla_put_failure
;
3295 mutex_unlock(&ipvs
->sync_mutex
);
3300 static int ip_vs_genl_new_daemon(struct net
*net
, struct nlattr
**attrs
)
3302 if (!(attrs
[IPVS_DAEMON_ATTR_STATE
] &&
3303 attrs
[IPVS_DAEMON_ATTR_MCAST_IFN
] &&
3304 attrs
[IPVS_DAEMON_ATTR_SYNC_ID
]))
3307 return start_sync_thread(net
,
3308 nla_get_u32(attrs
[IPVS_DAEMON_ATTR_STATE
]),
3309 nla_data(attrs
[IPVS_DAEMON_ATTR_MCAST_IFN
]),
3310 nla_get_u32(attrs
[IPVS_DAEMON_ATTR_SYNC_ID
]));
3313 static int ip_vs_genl_del_daemon(struct net
*net
, struct nlattr
**attrs
)
3315 if (!attrs
[IPVS_DAEMON_ATTR_STATE
])
3318 return stop_sync_thread(net
,
3319 nla_get_u32(attrs
[IPVS_DAEMON_ATTR_STATE
]));
3322 static int ip_vs_genl_set_config(struct net
*net
, struct nlattr
**attrs
)
3324 struct ip_vs_timeout_user t
;
3326 __ip_vs_get_timeouts(net
, &t
);
3328 if (attrs
[IPVS_CMD_ATTR_TIMEOUT_TCP
])
3329 t
.tcp_timeout
= nla_get_u32(attrs
[IPVS_CMD_ATTR_TIMEOUT_TCP
]);
3331 if (attrs
[IPVS_CMD_ATTR_TIMEOUT_TCP_FIN
])
3333 nla_get_u32(attrs
[IPVS_CMD_ATTR_TIMEOUT_TCP_FIN
]);
3335 if (attrs
[IPVS_CMD_ATTR_TIMEOUT_UDP
])
3336 t
.udp_timeout
= nla_get_u32(attrs
[IPVS_CMD_ATTR_TIMEOUT_UDP
]);
3338 return ip_vs_set_timeout(net
, &t
);
3341 static int ip_vs_genl_set_daemon(struct sk_buff
*skb
, struct genl_info
*info
)
3345 struct netns_ipvs
*ipvs
;
3347 net
= skb_sknet(skb
);
3348 ipvs
= net_ipvs(net
);
3349 cmd
= info
->genlhdr
->cmd
;
3351 if (cmd
== IPVS_CMD_NEW_DAEMON
|| cmd
== IPVS_CMD_DEL_DAEMON
) {
3352 struct nlattr
*daemon_attrs
[IPVS_DAEMON_ATTR_MAX
+ 1];
3354 mutex_lock(&ipvs
->sync_mutex
);
3355 if (!info
->attrs
[IPVS_CMD_ATTR_DAEMON
] ||
3356 nla_parse_nested(daemon_attrs
, IPVS_DAEMON_ATTR_MAX
,
3357 info
->attrs
[IPVS_CMD_ATTR_DAEMON
],
3358 ip_vs_daemon_policy
)) {
3363 if (cmd
== IPVS_CMD_NEW_DAEMON
)
3364 ret
= ip_vs_genl_new_daemon(net
, daemon_attrs
);
3366 ret
= ip_vs_genl_del_daemon(net
, daemon_attrs
);
3368 mutex_unlock(&ipvs
->sync_mutex
);
3373 static int ip_vs_genl_set_cmd(struct sk_buff
*skb
, struct genl_info
*info
)
3375 struct ip_vs_service
*svc
= NULL
;
3376 struct ip_vs_service_user_kern usvc
;
3377 struct ip_vs_dest_user_kern udest
;
3379 int need_full_svc
= 0, need_full_dest
= 0;
3382 net
= skb_sknet(skb
);
3383 cmd
= info
->genlhdr
->cmd
;
3385 mutex_lock(&__ip_vs_mutex
);
3387 if (cmd
== IPVS_CMD_FLUSH
) {
3388 ret
= ip_vs_flush(net
, false);
3390 } else if (cmd
== IPVS_CMD_SET_CONFIG
) {
3391 ret
= ip_vs_genl_set_config(net
, info
->attrs
);
3393 } else if (cmd
== IPVS_CMD_ZERO
&&
3394 !info
->attrs
[IPVS_CMD_ATTR_SERVICE
]) {
3395 ret
= ip_vs_zero_all(net
);
3399 /* All following commands require a service argument, so check if we
3400 * received a valid one. We need a full service specification when
3401 * adding / editing a service. Only identifying members otherwise. */
3402 if (cmd
== IPVS_CMD_NEW_SERVICE
|| cmd
== IPVS_CMD_SET_SERVICE
)
3405 ret
= ip_vs_genl_parse_service(net
, &usvc
,
3406 info
->attrs
[IPVS_CMD_ATTR_SERVICE
],
3407 need_full_svc
, &svc
);
3411 /* Unless we're adding a new service, the service must already exist */
3412 if ((cmd
!= IPVS_CMD_NEW_SERVICE
) && (svc
== NULL
)) {
3417 /* Destination commands require a valid destination argument. For
3418 * adding / editing a destination, we need a full destination
3420 if (cmd
== IPVS_CMD_NEW_DEST
|| cmd
== IPVS_CMD_SET_DEST
||
3421 cmd
== IPVS_CMD_DEL_DEST
) {
3422 if (cmd
!= IPVS_CMD_DEL_DEST
)
3425 ret
= ip_vs_genl_parse_dest(&udest
,
3426 info
->attrs
[IPVS_CMD_ATTR_DEST
],
3433 case IPVS_CMD_NEW_SERVICE
:
3435 ret
= ip_vs_add_service(net
, &usvc
, &svc
);
3439 case IPVS_CMD_SET_SERVICE
:
3440 ret
= ip_vs_edit_service(svc
, &usvc
);
3442 case IPVS_CMD_DEL_SERVICE
:
3443 ret
= ip_vs_del_service(svc
);
3444 /* do not use svc, it can be freed */
3446 case IPVS_CMD_NEW_DEST
:
3447 ret
= ip_vs_add_dest(svc
, &udest
);
3449 case IPVS_CMD_SET_DEST
:
3450 ret
= ip_vs_edit_dest(svc
, &udest
);
3452 case IPVS_CMD_DEL_DEST
:
3453 ret
= ip_vs_del_dest(svc
, &udest
);
3456 ret
= ip_vs_zero_service(svc
);
3463 mutex_unlock(&__ip_vs_mutex
);
3468 static int ip_vs_genl_get_cmd(struct sk_buff
*skb
, struct genl_info
*info
)
3470 struct sk_buff
*msg
;
3472 int ret
, cmd
, reply_cmd
;
3475 net
= skb_sknet(skb
);
3476 cmd
= info
->genlhdr
->cmd
;
3478 if (cmd
== IPVS_CMD_GET_SERVICE
)
3479 reply_cmd
= IPVS_CMD_NEW_SERVICE
;
3480 else if (cmd
== IPVS_CMD_GET_INFO
)
3481 reply_cmd
= IPVS_CMD_SET_INFO
;
3482 else if (cmd
== IPVS_CMD_GET_CONFIG
)
3483 reply_cmd
= IPVS_CMD_SET_CONFIG
;
3485 pr_err("unknown Generic Netlink command\n");
3489 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_KERNEL
);
3493 mutex_lock(&__ip_vs_mutex
);
3495 reply
= genlmsg_put_reply(msg
, info
, &ip_vs_genl_family
, 0, reply_cmd
);
3497 goto nla_put_failure
;
3500 case IPVS_CMD_GET_SERVICE
:
3502 struct ip_vs_service
*svc
;
3504 svc
= ip_vs_genl_find_service(net
,
3505 info
->attrs
[IPVS_CMD_ATTR_SERVICE
]);
3510 ret
= ip_vs_genl_fill_service(msg
, svc
);
3512 goto nla_put_failure
;
3521 case IPVS_CMD_GET_CONFIG
:
3523 struct ip_vs_timeout_user t
;
3525 __ip_vs_get_timeouts(net
, &t
);
3526 #ifdef CONFIG_IP_VS_PROTO_TCP
3527 if (nla_put_u32(msg
, IPVS_CMD_ATTR_TIMEOUT_TCP
,
3529 nla_put_u32(msg
, IPVS_CMD_ATTR_TIMEOUT_TCP_FIN
,
3531 goto nla_put_failure
;
3533 #ifdef CONFIG_IP_VS_PROTO_UDP
3534 if (nla_put_u32(msg
, IPVS_CMD_ATTR_TIMEOUT_UDP
, t
.udp_timeout
))
3535 goto nla_put_failure
;
3541 case IPVS_CMD_GET_INFO
:
3542 if (nla_put_u32(msg
, IPVS_INFO_ATTR_VERSION
,
3543 IP_VS_VERSION_CODE
) ||
3544 nla_put_u32(msg
, IPVS_INFO_ATTR_CONN_TAB_SIZE
,
3545 ip_vs_conn_tab_size
))
3546 goto nla_put_failure
;
3550 genlmsg_end(msg
, reply
);
3551 ret
= genlmsg_reply(msg
, info
);
3555 pr_err("not enough space in Netlink message\n");
3561 mutex_unlock(&__ip_vs_mutex
);
3567 static struct genl_ops ip_vs_genl_ops
[] __read_mostly
= {
3569 .cmd
= IPVS_CMD_NEW_SERVICE
,
3570 .flags
= GENL_ADMIN_PERM
,
3571 .policy
= ip_vs_cmd_policy
,
3572 .doit
= ip_vs_genl_set_cmd
,
3575 .cmd
= IPVS_CMD_SET_SERVICE
,
3576 .flags
= GENL_ADMIN_PERM
,
3577 .policy
= ip_vs_cmd_policy
,
3578 .doit
= ip_vs_genl_set_cmd
,
3581 .cmd
= IPVS_CMD_DEL_SERVICE
,
3582 .flags
= GENL_ADMIN_PERM
,
3583 .policy
= ip_vs_cmd_policy
,
3584 .doit
= ip_vs_genl_set_cmd
,
3587 .cmd
= IPVS_CMD_GET_SERVICE
,
3588 .flags
= GENL_ADMIN_PERM
,
3589 .doit
= ip_vs_genl_get_cmd
,
3590 .dumpit
= ip_vs_genl_dump_services
,
3591 .policy
= ip_vs_cmd_policy
,
3594 .cmd
= IPVS_CMD_NEW_DEST
,
3595 .flags
= GENL_ADMIN_PERM
,
3596 .policy
= ip_vs_cmd_policy
,
3597 .doit
= ip_vs_genl_set_cmd
,
3600 .cmd
= IPVS_CMD_SET_DEST
,
3601 .flags
= GENL_ADMIN_PERM
,
3602 .policy
= ip_vs_cmd_policy
,
3603 .doit
= ip_vs_genl_set_cmd
,
3606 .cmd
= IPVS_CMD_DEL_DEST
,
3607 .flags
= GENL_ADMIN_PERM
,
3608 .policy
= ip_vs_cmd_policy
,
3609 .doit
= ip_vs_genl_set_cmd
,
3612 .cmd
= IPVS_CMD_GET_DEST
,
3613 .flags
= GENL_ADMIN_PERM
,
3614 .policy
= ip_vs_cmd_policy
,
3615 .dumpit
= ip_vs_genl_dump_dests
,
3618 .cmd
= IPVS_CMD_NEW_DAEMON
,
3619 .flags
= GENL_ADMIN_PERM
,
3620 .policy
= ip_vs_cmd_policy
,
3621 .doit
= ip_vs_genl_set_daemon
,
3624 .cmd
= IPVS_CMD_DEL_DAEMON
,
3625 .flags
= GENL_ADMIN_PERM
,
3626 .policy
= ip_vs_cmd_policy
,
3627 .doit
= ip_vs_genl_set_daemon
,
3630 .cmd
= IPVS_CMD_GET_DAEMON
,
3631 .flags
= GENL_ADMIN_PERM
,
3632 .dumpit
= ip_vs_genl_dump_daemons
,
3635 .cmd
= IPVS_CMD_SET_CONFIG
,
3636 .flags
= GENL_ADMIN_PERM
,
3637 .policy
= ip_vs_cmd_policy
,
3638 .doit
= ip_vs_genl_set_cmd
,
3641 .cmd
= IPVS_CMD_GET_CONFIG
,
3642 .flags
= GENL_ADMIN_PERM
,
3643 .doit
= ip_vs_genl_get_cmd
,
3646 .cmd
= IPVS_CMD_GET_INFO
,
3647 .flags
= GENL_ADMIN_PERM
,
3648 .doit
= ip_vs_genl_get_cmd
,
3651 .cmd
= IPVS_CMD_ZERO
,
3652 .flags
= GENL_ADMIN_PERM
,
3653 .policy
= ip_vs_cmd_policy
,
3654 .doit
= ip_vs_genl_set_cmd
,
3657 .cmd
= IPVS_CMD_FLUSH
,
3658 .flags
= GENL_ADMIN_PERM
,
3659 .doit
= ip_vs_genl_set_cmd
,
3663 static int __init
ip_vs_genl_register(void)
3665 return genl_register_family_with_ops(&ip_vs_genl_family
,
3666 ip_vs_genl_ops
, ARRAY_SIZE(ip_vs_genl_ops
));
3669 static void ip_vs_genl_unregister(void)
3671 genl_unregister_family(&ip_vs_genl_family
);
3674 /* End of Generic Netlink interface definitions */
3677 * per netns intit/exit func.
3679 #ifdef CONFIG_SYSCTL
3680 static int __net_init
ip_vs_control_net_init_sysctl(struct net
*net
)
3683 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3684 struct ctl_table
*tbl
;
3686 atomic_set(&ipvs
->dropentry
, 0);
3687 spin_lock_init(&ipvs
->dropentry_lock
);
3688 spin_lock_init(&ipvs
->droppacket_lock
);
3689 spin_lock_init(&ipvs
->securetcp_lock
);
3691 if (!net_eq(net
, &init_net
)) {
3692 tbl
= kmemdup(vs_vars
, sizeof(vs_vars
), GFP_KERNEL
);
3696 /* Don't export sysctls to unprivileged users */
3697 if (net
->user_ns
!= &init_user_ns
)
3698 tbl
[0].procname
= NULL
;
3701 /* Initialize sysctl defaults */
3703 ipvs
->sysctl_amemthresh
= 1024;
3704 tbl
[idx
++].data
= &ipvs
->sysctl_amemthresh
;
3705 ipvs
->sysctl_am_droprate
= 10;
3706 tbl
[idx
++].data
= &ipvs
->sysctl_am_droprate
;
3707 tbl
[idx
++].data
= &ipvs
->sysctl_drop_entry
;
3708 tbl
[idx
++].data
= &ipvs
->sysctl_drop_packet
;
3709 #ifdef CONFIG_IP_VS_NFCT
3710 tbl
[idx
++].data
= &ipvs
->sysctl_conntrack
;
3712 tbl
[idx
++].data
= &ipvs
->sysctl_secure_tcp
;
3713 ipvs
->sysctl_snat_reroute
= 1;
3714 tbl
[idx
++].data
= &ipvs
->sysctl_snat_reroute
;
3715 ipvs
->sysctl_sync_ver
= 1;
3716 tbl
[idx
++].data
= &ipvs
->sysctl_sync_ver
;
3717 ipvs
->sysctl_sync_ports
= 1;
3718 tbl
[idx
++].data
= &ipvs
->sysctl_sync_ports
;
3719 ipvs
->sysctl_sync_qlen_max
= nr_free_buffer_pages() / 32;
3720 tbl
[idx
++].data
= &ipvs
->sysctl_sync_qlen_max
;
3721 ipvs
->sysctl_sync_sock_size
= 0;
3722 tbl
[idx
++].data
= &ipvs
->sysctl_sync_sock_size
;
3723 tbl
[idx
++].data
= &ipvs
->sysctl_cache_bypass
;
3724 tbl
[idx
++].data
= &ipvs
->sysctl_expire_nodest_conn
;
3725 tbl
[idx
++].data
= &ipvs
->sysctl_expire_quiescent_template
;
3726 ipvs
->sysctl_sync_threshold
[0] = DEFAULT_SYNC_THRESHOLD
;
3727 ipvs
->sysctl_sync_threshold
[1] = DEFAULT_SYNC_PERIOD
;
3728 tbl
[idx
].data
= &ipvs
->sysctl_sync_threshold
;
3729 tbl
[idx
++].maxlen
= sizeof(ipvs
->sysctl_sync_threshold
);
3730 ipvs
->sysctl_sync_refresh_period
= DEFAULT_SYNC_REFRESH_PERIOD
;
3731 tbl
[idx
++].data
= &ipvs
->sysctl_sync_refresh_period
;
3732 ipvs
->sysctl_sync_retries
= clamp_t(int, DEFAULT_SYNC_RETRIES
, 0, 3);
3733 tbl
[idx
++].data
= &ipvs
->sysctl_sync_retries
;
3734 tbl
[idx
++].data
= &ipvs
->sysctl_nat_icmp_send
;
3735 ipvs
->sysctl_pmtu_disc
= 1;
3736 tbl
[idx
++].data
= &ipvs
->sysctl_pmtu_disc
;
3737 tbl
[idx
++].data
= &ipvs
->sysctl_backup_only
;
3740 ipvs
->sysctl_hdr
= register_net_sysctl(net
, "net/ipv4/vs", tbl
);
3741 if (ipvs
->sysctl_hdr
== NULL
) {
3742 if (!net_eq(net
, &init_net
))
3746 ip_vs_start_estimator(net
, &ipvs
->tot_stats
);
3747 ipvs
->sysctl_tbl
= tbl
;
3748 /* Schedule defense work */
3749 INIT_DELAYED_WORK(&ipvs
->defense_work
, defense_work_handler
);
3750 schedule_delayed_work(&ipvs
->defense_work
, DEFENSE_TIMER_PERIOD
);
3755 static void __net_exit
ip_vs_control_net_cleanup_sysctl(struct net
*net
)
3757 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3759 cancel_delayed_work_sync(&ipvs
->defense_work
);
3760 cancel_work_sync(&ipvs
->defense_work
.work
);
3761 unregister_net_sysctl_table(ipvs
->sysctl_hdr
);
3766 static int __net_init
ip_vs_control_net_init_sysctl(struct net
*net
) { return 0; }
3767 static void __net_exit
ip_vs_control_net_cleanup_sysctl(struct net
*net
) { }
3771 static struct notifier_block ip_vs_dst_notifier
= {
3772 .notifier_call
= ip_vs_dst_event
,
3775 int __net_init
ip_vs_control_net_init(struct net
*net
)
3778 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3780 /* Initialize rs_table */
3781 for (idx
= 0; idx
< IP_VS_RTAB_SIZE
; idx
++)
3782 INIT_HLIST_HEAD(&ipvs
->rs_table
[idx
]);
3784 INIT_LIST_HEAD(&ipvs
->dest_trash
);
3785 spin_lock_init(&ipvs
->dest_trash_lock
);
3786 setup_timer(&ipvs
->dest_trash_timer
, ip_vs_dest_trash_expire
,
3787 (unsigned long) net
);
3788 atomic_set(&ipvs
->ftpsvc_counter
, 0);
3789 atomic_set(&ipvs
->nullsvc_counter
, 0);
3792 ipvs
->tot_stats
.cpustats
= alloc_percpu(struct ip_vs_cpu_stats
);
3793 if (!ipvs
->tot_stats
.cpustats
)
3796 spin_lock_init(&ipvs
->tot_stats
.lock
);
3798 proc_create("ip_vs", 0, net
->proc_net
, &ip_vs_info_fops
);
3799 proc_create("ip_vs_stats", 0, net
->proc_net
, &ip_vs_stats_fops
);
3800 proc_create("ip_vs_stats_percpu", 0, net
->proc_net
,
3801 &ip_vs_stats_percpu_fops
);
3803 if (ip_vs_control_net_init_sysctl(net
))
3809 free_percpu(ipvs
->tot_stats
.cpustats
);
3813 void __net_exit
ip_vs_control_net_cleanup(struct net
*net
)
3815 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3817 /* Some dest can be in grace period even before cleanup, we have to
3818 * defer ip_vs_trash_cleanup until ip_vs_dest_wait_readers is called.
3821 ip_vs_trash_cleanup(net
);
3822 ip_vs_stop_estimator(net
, &ipvs
->tot_stats
);
3823 ip_vs_control_net_cleanup_sysctl(net
);
3824 remove_proc_entry("ip_vs_stats_percpu", net
->proc_net
);
3825 remove_proc_entry("ip_vs_stats", net
->proc_net
);
3826 remove_proc_entry("ip_vs", net
->proc_net
);
3827 free_percpu(ipvs
->tot_stats
.cpustats
);
3830 int __init
ip_vs_register_nl_ioctl(void)
3834 ret
= nf_register_sockopt(&ip_vs_sockopts
);
3836 pr_err("cannot register sockopt.\n");
3840 ret
= ip_vs_genl_register();
3842 pr_err("cannot register Generic Netlink interface.\n");
3848 nf_unregister_sockopt(&ip_vs_sockopts
);
3853 void ip_vs_unregister_nl_ioctl(void)
3855 ip_vs_genl_unregister();
3856 nf_unregister_sockopt(&ip_vs_sockopts
);
3859 int __init
ip_vs_control_init(void)
3866 /* Initialize svc_table, ip_vs_svc_fwm_table */
3867 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
3868 INIT_HLIST_HEAD(&ip_vs_svc_table
[idx
]);
3869 INIT_HLIST_HEAD(&ip_vs_svc_fwm_table
[idx
]);
3872 smp_wmb(); /* Do we really need it now ? */
3874 ret
= register_netdevice_notifier(&ip_vs_dst_notifier
);
3883 void ip_vs_control_cleanup(void)
3886 unregister_netdevice_notifier(&ip_vs_dst_notifier
);