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 netns_ipvs
*ipvs
, int af
, unsigned int proto
,
267 const union nf_inet_addr
*addr
, __be16 port
)
269 register unsigned int porth
= ntohs(port
);
270 __be32 addr_fold
= addr
->ip
;
273 #ifdef CONFIG_IP_VS_IPV6
275 addr_fold
= addr
->ip6
[0]^addr
->ip6
[1]^
276 addr
->ip6
[2]^addr
->ip6
[3];
278 ahash
= ntohl(addr_fold
);
279 ahash
^= ((size_t) ipvs
>> 8);
281 return (proto
^ ahash
^ (porth
>> IP_VS_SVC_TAB_BITS
) ^ porth
) &
286 * Returns hash value of fwmark for virtual service lookup
288 static inline unsigned int ip_vs_svc_fwm_hashkey(struct netns_ipvs
*ipvs
, __u32 fwmark
)
290 return (((size_t)ipvs
>>8) ^ fwmark
) & IP_VS_SVC_TAB_MASK
;
294 * Hashes a service in the ip_vs_svc_table by <netns,proto,addr,port>
295 * or in the ip_vs_svc_fwm_table by fwmark.
296 * Should be called with locked tables.
298 static int ip_vs_svc_hash(struct ip_vs_service
*svc
)
302 if (svc
->flags
& IP_VS_SVC_F_HASHED
) {
303 pr_err("%s(): request for already hashed, called from %pF\n",
304 __func__
, __builtin_return_address(0));
308 if (svc
->fwmark
== 0) {
310 * Hash it by <netns,protocol,addr,port> in ip_vs_svc_table
312 hash
= ip_vs_svc_hashkey(svc
->ipvs
, svc
->af
, svc
->protocol
,
313 &svc
->addr
, svc
->port
);
314 hlist_add_head_rcu(&svc
->s_list
, &ip_vs_svc_table
[hash
]);
317 * Hash it by fwmark in svc_fwm_table
319 hash
= ip_vs_svc_fwm_hashkey(svc
->ipvs
, svc
->fwmark
);
320 hlist_add_head_rcu(&svc
->f_list
, &ip_vs_svc_fwm_table
[hash
]);
323 svc
->flags
|= IP_VS_SVC_F_HASHED
;
324 /* increase its refcnt because it is referenced by the svc table */
325 atomic_inc(&svc
->refcnt
);
331 * Unhashes a service from svc_table / svc_fwm_table.
332 * Should be called with locked tables.
334 static int ip_vs_svc_unhash(struct ip_vs_service
*svc
)
336 if (!(svc
->flags
& IP_VS_SVC_F_HASHED
)) {
337 pr_err("%s(): request for unhash flagged, called from %pF\n",
338 __func__
, __builtin_return_address(0));
342 if (svc
->fwmark
== 0) {
343 /* Remove it from the svc_table table */
344 hlist_del_rcu(&svc
->s_list
);
346 /* Remove it from the svc_fwm_table table */
347 hlist_del_rcu(&svc
->f_list
);
350 svc
->flags
&= ~IP_VS_SVC_F_HASHED
;
351 atomic_dec(&svc
->refcnt
);
357 * Get service by {netns, proto,addr,port} in the service table.
359 static inline struct ip_vs_service
*
360 __ip_vs_service_find(struct netns_ipvs
*ipvs
, int af
, __u16 protocol
,
361 const union nf_inet_addr
*vaddr
, __be16 vport
)
364 struct ip_vs_service
*svc
;
366 /* Check for "full" addressed entries */
367 hash
= ip_vs_svc_hashkey(ipvs
, af
, protocol
, vaddr
, vport
);
369 hlist_for_each_entry_rcu(svc
, &ip_vs_svc_table
[hash
], s_list
) {
371 && ip_vs_addr_equal(af
, &svc
->addr
, vaddr
)
372 && (svc
->port
== vport
)
373 && (svc
->protocol
== protocol
)
374 && (svc
->ipvs
== ipvs
)) {
385 * Get service by {fwmark} in the service table.
387 static inline struct ip_vs_service
*
388 __ip_vs_svc_fwm_find(struct netns_ipvs
*ipvs
, int af
, __u32 fwmark
)
391 struct ip_vs_service
*svc
;
393 /* Check for fwmark addressed entries */
394 hash
= ip_vs_svc_fwm_hashkey(ipvs
, fwmark
);
396 hlist_for_each_entry_rcu(svc
, &ip_vs_svc_fwm_table
[hash
], f_list
) {
397 if (svc
->fwmark
== fwmark
&& svc
->af
== af
398 && (svc
->ipvs
== ipvs
)) {
407 /* Find service, called under RCU lock */
408 struct ip_vs_service
*
409 ip_vs_service_find(struct netns_ipvs
*ipvs
, int af
, __u32 fwmark
, __u16 protocol
,
410 const union nf_inet_addr
*vaddr
, __be16 vport
)
412 struct ip_vs_service
*svc
;
415 * Check the table hashed by fwmark first
418 svc
= __ip_vs_svc_fwm_find(ipvs
, af
, fwmark
);
424 * Check the table hashed by <protocol,addr,port>
425 * for "full" addressed entries
427 svc
= __ip_vs_service_find(ipvs
, af
, protocol
, vaddr
, vport
);
430 && protocol
== IPPROTO_TCP
431 && atomic_read(&ipvs
->ftpsvc_counter
)
432 && (vport
== FTPDATA
|| ntohs(vport
) >= PROT_SOCK
)) {
434 * Check if ftp service entry exists, the packet
435 * might belong to FTP data connections.
437 svc
= __ip_vs_service_find(ipvs
, af
, protocol
, vaddr
, FTPPORT
);
441 && atomic_read(&ipvs
->nullsvc_counter
)) {
443 * Check if the catch-all port (port zero) exists
445 svc
= __ip_vs_service_find(ipvs
, af
, protocol
, vaddr
, 0);
449 IP_VS_DBG_BUF(9, "lookup service: fwm %u %s %s:%u %s\n",
450 fwmark
, ip_vs_proto_name(protocol
),
451 IP_VS_DBG_ADDR(af
, vaddr
), ntohs(vport
),
452 svc
? "hit" : "not hit");
459 __ip_vs_bind_svc(struct ip_vs_dest
*dest
, struct ip_vs_service
*svc
)
461 atomic_inc(&svc
->refcnt
);
462 rcu_assign_pointer(dest
->svc
, svc
);
465 static void ip_vs_service_free(struct ip_vs_service
*svc
)
467 free_percpu(svc
->stats
.cpustats
);
471 static void ip_vs_service_rcu_free(struct rcu_head
*head
)
473 struct ip_vs_service
*svc
;
475 svc
= container_of(head
, struct ip_vs_service
, rcu_head
);
476 ip_vs_service_free(svc
);
479 static void __ip_vs_svc_put(struct ip_vs_service
*svc
, bool do_delay
)
481 if (atomic_dec_and_test(&svc
->refcnt
)) {
482 IP_VS_DBG_BUF(3, "Removing service %u/%s:%u\n",
484 IP_VS_DBG_ADDR(svc
->af
, &svc
->addr
),
487 call_rcu(&svc
->rcu_head
, ip_vs_service_rcu_free
);
489 ip_vs_service_free(svc
);
495 * Returns hash value for real service
497 static inline unsigned int ip_vs_rs_hashkey(int af
,
498 const union nf_inet_addr
*addr
,
501 register unsigned int porth
= ntohs(port
);
502 __be32 addr_fold
= addr
->ip
;
504 #ifdef CONFIG_IP_VS_IPV6
506 addr_fold
= addr
->ip6
[0]^addr
->ip6
[1]^
507 addr
->ip6
[2]^addr
->ip6
[3];
510 return (ntohl(addr_fold
)^(porth
>>IP_VS_RTAB_BITS
)^porth
)
514 /* Hash ip_vs_dest in rs_table by <proto,addr,port>. */
515 static void ip_vs_rs_hash(struct netns_ipvs
*ipvs
, struct ip_vs_dest
*dest
)
519 if (dest
->in_rs_table
)
523 * Hash by proto,addr,port,
524 * which are the parameters of the real service.
526 hash
= ip_vs_rs_hashkey(dest
->af
, &dest
->addr
, dest
->port
);
528 hlist_add_head_rcu(&dest
->d_list
, &ipvs
->rs_table
[hash
]);
529 dest
->in_rs_table
= 1;
532 /* Unhash ip_vs_dest from rs_table. */
533 static void ip_vs_rs_unhash(struct ip_vs_dest
*dest
)
536 * Remove it from the rs_table table.
538 if (dest
->in_rs_table
) {
539 hlist_del_rcu(&dest
->d_list
);
540 dest
->in_rs_table
= 0;
544 /* Check if real service by <proto,addr,port> is present */
545 bool ip_vs_has_real_service(struct netns_ipvs
*ipvs
, int af
, __u16 protocol
,
546 const union nf_inet_addr
*daddr
, __be16 dport
)
549 struct ip_vs_dest
*dest
;
551 /* Check for "full" addressed entries */
552 hash
= ip_vs_rs_hashkey(af
, daddr
, dport
);
555 hlist_for_each_entry_rcu(dest
, &ipvs
->rs_table
[hash
], d_list
) {
556 if (dest
->port
== dport
&&
558 ip_vs_addr_equal(af
, &dest
->addr
, daddr
) &&
559 (dest
->protocol
== protocol
|| dest
->vfwmark
)) {
570 /* Lookup destination by {addr,port} in the given service
571 * Called under RCU lock.
573 static struct ip_vs_dest
*
574 ip_vs_lookup_dest(struct ip_vs_service
*svc
, int dest_af
,
575 const union nf_inet_addr
*daddr
, __be16 dport
)
577 struct ip_vs_dest
*dest
;
580 * Find the destination for the given service
582 list_for_each_entry_rcu(dest
, &svc
->destinations
, n_list
) {
583 if ((dest
->af
== dest_af
) &&
584 ip_vs_addr_equal(dest_af
, &dest
->addr
, daddr
) &&
585 (dest
->port
== dport
)) {
595 * Find destination by {daddr,dport,vaddr,protocol}
596 * Created to be used in ip_vs_process_message() in
597 * the backup synchronization daemon. It finds the
598 * destination to be bound to the received connection
600 * Called under RCU lock, no refcnt is returned.
602 struct ip_vs_dest
*ip_vs_find_dest(struct netns_ipvs
*ipvs
, int svc_af
, int dest_af
,
603 const union nf_inet_addr
*daddr
,
605 const union nf_inet_addr
*vaddr
,
606 __be16 vport
, __u16 protocol
, __u32 fwmark
,
609 struct ip_vs_dest
*dest
;
610 struct ip_vs_service
*svc
;
613 svc
= ip_vs_service_find(ipvs
, svc_af
, fwmark
, protocol
, vaddr
, vport
);
616 if (fwmark
&& (flags
& IP_VS_CONN_F_FWD_MASK
) != IP_VS_CONN_F_MASQ
)
618 dest
= ip_vs_lookup_dest(svc
, dest_af
, daddr
, port
);
620 dest
= ip_vs_lookup_dest(svc
, dest_af
, daddr
, port
^ dport
);
624 void ip_vs_dest_dst_rcu_free(struct rcu_head
*head
)
626 struct ip_vs_dest_dst
*dest_dst
= container_of(head
,
627 struct ip_vs_dest_dst
,
630 dst_release(dest_dst
->dst_cache
);
634 /* Release dest_dst and dst_cache for dest in user context */
635 static void __ip_vs_dst_cache_reset(struct ip_vs_dest
*dest
)
637 struct ip_vs_dest_dst
*old
;
639 old
= rcu_dereference_protected(dest
->dest_dst
, 1);
641 RCU_INIT_POINTER(dest
->dest_dst
, NULL
);
642 call_rcu(&old
->rcu_head
, ip_vs_dest_dst_rcu_free
);
647 * Lookup dest by {svc,addr,port} in the destination trash.
648 * The destination trash is used to hold the destinations that are removed
649 * from the service table but are still referenced by some conn entries.
650 * The reason to add the destination trash is when the dest is temporary
651 * down (either by administrator or by monitor program), the dest can be
652 * picked back from the trash, the remaining connections to the dest can
653 * continue, and the counting information of the dest is also useful for
656 static struct ip_vs_dest
*
657 ip_vs_trash_get_dest(struct ip_vs_service
*svc
, int dest_af
,
658 const union nf_inet_addr
*daddr
, __be16 dport
)
660 struct ip_vs_dest
*dest
;
661 struct netns_ipvs
*ipvs
= svc
->ipvs
;
664 * Find the destination in trash
666 spin_lock_bh(&ipvs
->dest_trash_lock
);
667 list_for_each_entry(dest
, &ipvs
->dest_trash
, t_list
) {
668 IP_VS_DBG_BUF(3, "Destination %u/%s:%u still in trash, "
671 IP_VS_DBG_ADDR(dest
->af
, &dest
->addr
),
673 atomic_read(&dest
->refcnt
));
674 if (dest
->af
== dest_af
&&
675 ip_vs_addr_equal(dest_af
, &dest
->addr
, daddr
) &&
676 dest
->port
== dport
&&
677 dest
->vfwmark
== svc
->fwmark
&&
678 dest
->protocol
== svc
->protocol
&&
680 (ip_vs_addr_equal(svc
->af
, &dest
->vaddr
, &svc
->addr
) &&
681 dest
->vport
== svc
->port
))) {
683 list_del(&dest
->t_list
);
684 ip_vs_dest_hold(dest
);
692 spin_unlock_bh(&ipvs
->dest_trash_lock
);
697 static void ip_vs_dest_free(struct ip_vs_dest
*dest
)
699 struct ip_vs_service
*svc
= rcu_dereference_protected(dest
->svc
, 1);
701 __ip_vs_dst_cache_reset(dest
);
702 __ip_vs_svc_put(svc
, false);
703 free_percpu(dest
->stats
.cpustats
);
704 ip_vs_dest_put_and_free(dest
);
708 * Clean up all the destinations in the trash
709 * Called by the ip_vs_control_cleanup()
711 * When the ip_vs_control_clearup is activated by ipvs module exit,
712 * the service tables must have been flushed and all the connections
713 * are expired, and the refcnt of each destination in the trash must
714 * be 0, so we simply release them here.
716 static void ip_vs_trash_cleanup(struct netns_ipvs
*ipvs
)
718 struct ip_vs_dest
*dest
, *nxt
;
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_kstats
*dst
, struct ip_vs_stats
*src
)
731 #define IP_VS_SHOW_STATS_COUNTER(c) dst->c = src->kstats.c - src->kstats0.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_export_stats_user(struct ip_vs_stats_user
*dst
, struct ip_vs_kstats
*src
)
749 dst
->conns
= (u32
)src
->conns
;
750 dst
->inpkts
= (u32
)src
->inpkts
;
751 dst
->outpkts
= (u32
)src
->outpkts
;
752 dst
->inbytes
= src
->inbytes
;
753 dst
->outbytes
= src
->outbytes
;
754 dst
->cps
= (u32
)src
->cps
;
755 dst
->inpps
= (u32
)src
->inpps
;
756 dst
->outpps
= (u32
)src
->outpps
;
757 dst
->inbps
= (u32
)src
->inbps
;
758 dst
->outbps
= (u32
)src
->outbps
;
762 ip_vs_zero_stats(struct ip_vs_stats
*stats
)
764 spin_lock_bh(&stats
->lock
);
766 /* get current counters as zero point, rates are zeroed */
768 #define IP_VS_ZERO_STATS_COUNTER(c) stats->kstats0.c = stats->kstats.c
770 IP_VS_ZERO_STATS_COUNTER(conns
);
771 IP_VS_ZERO_STATS_COUNTER(inpkts
);
772 IP_VS_ZERO_STATS_COUNTER(outpkts
);
773 IP_VS_ZERO_STATS_COUNTER(inbytes
);
774 IP_VS_ZERO_STATS_COUNTER(outbytes
);
776 ip_vs_zero_estimator(stats
);
778 spin_unlock_bh(&stats
->lock
);
782 * Update a destination in the given service
785 __ip_vs_update_dest(struct ip_vs_service
*svc
, struct ip_vs_dest
*dest
,
786 struct ip_vs_dest_user_kern
*udest
, int add
)
788 struct netns_ipvs
*ipvs
= svc
->ipvs
;
789 struct ip_vs_service
*old_svc
;
790 struct ip_vs_scheduler
*sched
;
793 /* We cannot modify an address and change the address family */
794 BUG_ON(!add
&& udest
->af
!= dest
->af
);
796 if (add
&& udest
->af
!= svc
->af
)
797 ipvs
->mixed_address_family_dests
++;
799 /* set the weight and the flags */
800 atomic_set(&dest
->weight
, udest
->weight
);
801 conn_flags
= udest
->conn_flags
& IP_VS_CONN_F_DEST_MASK
;
802 conn_flags
|= IP_VS_CONN_F_INACTIVE
;
804 /* set the IP_VS_CONN_F_NOOUTPUT flag if not masquerading/NAT */
805 if ((conn_flags
& IP_VS_CONN_F_FWD_MASK
) != IP_VS_CONN_F_MASQ
) {
806 conn_flags
|= IP_VS_CONN_F_NOOUTPUT
;
809 * Put the real service in rs_table if not present.
810 * For now only for NAT!
812 ip_vs_rs_hash(ipvs
, dest
);
814 atomic_set(&dest
->conn_flags
, conn_flags
);
816 /* bind the service */
817 old_svc
= rcu_dereference_protected(dest
->svc
, 1);
819 __ip_vs_bind_svc(dest
, svc
);
821 if (old_svc
!= svc
) {
822 ip_vs_zero_stats(&dest
->stats
);
823 __ip_vs_bind_svc(dest
, svc
);
824 __ip_vs_svc_put(old_svc
, true);
828 /* set the dest status flags */
829 dest
->flags
|= IP_VS_DEST_F_AVAILABLE
;
831 if (udest
->u_threshold
== 0 || udest
->u_threshold
> dest
->u_threshold
)
832 dest
->flags
&= ~IP_VS_DEST_F_OVERLOAD
;
833 dest
->u_threshold
= udest
->u_threshold
;
834 dest
->l_threshold
= udest
->l_threshold
;
836 dest
->af
= udest
->af
;
838 spin_lock_bh(&dest
->dst_lock
);
839 __ip_vs_dst_cache_reset(dest
);
840 spin_unlock_bh(&dest
->dst_lock
);
843 ip_vs_start_estimator(svc
->ipvs
->net
, &dest
->stats
);
844 list_add_rcu(&dest
->n_list
, &svc
->destinations
);
846 sched
= rcu_dereference_protected(svc
->scheduler
, 1);
847 if (sched
&& sched
->add_dest
)
848 sched
->add_dest(svc
, dest
);
850 sched
= rcu_dereference_protected(svc
->scheduler
, 1);
851 if (sched
&& sched
->upd_dest
)
852 sched
->upd_dest(svc
, dest
);
858 * Create a destination for the given service
861 ip_vs_new_dest(struct ip_vs_service
*svc
, struct ip_vs_dest_user_kern
*udest
,
862 struct ip_vs_dest
**dest_p
)
864 struct ip_vs_dest
*dest
;
865 unsigned int atype
, i
;
869 #ifdef CONFIG_IP_VS_IPV6
870 if (udest
->af
== AF_INET6
) {
871 atype
= ipv6_addr_type(&udest
->addr
.in6
);
872 if ((!(atype
& IPV6_ADDR_UNICAST
) ||
873 atype
& IPV6_ADDR_LINKLOCAL
) &&
874 !__ip_vs_addr_is_local_v6(svc
->ipvs
->net
, &udest
->addr
.in6
))
879 atype
= inet_addr_type(svc
->ipvs
->net
, udest
->addr
.ip
);
880 if (atype
!= RTN_LOCAL
&& atype
!= RTN_UNICAST
)
884 dest
= kzalloc(sizeof(struct ip_vs_dest
), GFP_KERNEL
);
888 dest
->stats
.cpustats
= alloc_percpu(struct ip_vs_cpu_stats
);
889 if (!dest
->stats
.cpustats
)
892 for_each_possible_cpu(i
) {
893 struct ip_vs_cpu_stats
*ip_vs_dest_stats
;
894 ip_vs_dest_stats
= per_cpu_ptr(dest
->stats
.cpustats
, i
);
895 u64_stats_init(&ip_vs_dest_stats
->syncp
);
898 dest
->af
= udest
->af
;
899 dest
->protocol
= svc
->protocol
;
900 dest
->vaddr
= svc
->addr
;
901 dest
->vport
= svc
->port
;
902 dest
->vfwmark
= svc
->fwmark
;
903 ip_vs_addr_copy(udest
->af
, &dest
->addr
, &udest
->addr
);
904 dest
->port
= udest
->port
;
906 atomic_set(&dest
->activeconns
, 0);
907 atomic_set(&dest
->inactconns
, 0);
908 atomic_set(&dest
->persistconns
, 0);
909 atomic_set(&dest
->refcnt
, 1);
911 INIT_HLIST_NODE(&dest
->d_list
);
912 spin_lock_init(&dest
->dst_lock
);
913 spin_lock_init(&dest
->stats
.lock
);
914 __ip_vs_update_dest(svc
, dest
, udest
, 1);
928 * Add a destination into an existing service
931 ip_vs_add_dest(struct ip_vs_service
*svc
, struct ip_vs_dest_user_kern
*udest
)
933 struct ip_vs_dest
*dest
;
934 union nf_inet_addr daddr
;
935 __be16 dport
= udest
->port
;
940 if (udest
->weight
< 0) {
941 pr_err("%s(): server weight less than zero\n", __func__
);
945 if (udest
->l_threshold
> udest
->u_threshold
) {
946 pr_err("%s(): lower threshold is higher than upper threshold\n",
951 ip_vs_addr_copy(udest
->af
, &daddr
, &udest
->addr
);
953 /* We use function that requires RCU lock */
955 dest
= ip_vs_lookup_dest(svc
, udest
->af
, &daddr
, dport
);
959 IP_VS_DBG(1, "%s(): dest already exists\n", __func__
);
964 * Check if the dest already exists in the trash and
965 * is from the same service
967 dest
= ip_vs_trash_get_dest(svc
, udest
->af
, &daddr
, dport
);
970 IP_VS_DBG_BUF(3, "Get destination %s:%u from trash, "
971 "dest->refcnt=%d, service %u/%s:%u\n",
972 IP_VS_DBG_ADDR(udest
->af
, &daddr
), ntohs(dport
),
973 atomic_read(&dest
->refcnt
),
975 IP_VS_DBG_ADDR(svc
->af
, &dest
->vaddr
),
978 __ip_vs_update_dest(svc
, dest
, udest
, 1);
982 * Allocate and initialize the dest structure
984 ret
= ip_vs_new_dest(svc
, udest
, &dest
);
993 * Edit a destination in the given service
996 ip_vs_edit_dest(struct ip_vs_service
*svc
, struct ip_vs_dest_user_kern
*udest
)
998 struct ip_vs_dest
*dest
;
999 union nf_inet_addr daddr
;
1000 __be16 dport
= udest
->port
;
1004 if (udest
->weight
< 0) {
1005 pr_err("%s(): server weight less than zero\n", __func__
);
1009 if (udest
->l_threshold
> udest
->u_threshold
) {
1010 pr_err("%s(): lower threshold is higher than upper threshold\n",
1015 ip_vs_addr_copy(udest
->af
, &daddr
, &udest
->addr
);
1017 /* We use function that requires RCU lock */
1019 dest
= ip_vs_lookup_dest(svc
, udest
->af
, &daddr
, dport
);
1023 IP_VS_DBG(1, "%s(): dest doesn't exist\n", __func__
);
1027 __ip_vs_update_dest(svc
, dest
, udest
, 0);
1034 * Delete a destination (must be already unlinked from the service)
1036 static void __ip_vs_del_dest(struct netns_ipvs
*ipvs
, struct ip_vs_dest
*dest
,
1039 ip_vs_stop_estimator(ipvs
->net
, &dest
->stats
);
1042 * Remove it from the d-linked list with the real services.
1044 ip_vs_rs_unhash(dest
);
1046 spin_lock_bh(&ipvs
->dest_trash_lock
);
1047 IP_VS_DBG_BUF(3, "Moving dest %s:%u into trash, dest->refcnt=%d\n",
1048 IP_VS_DBG_ADDR(dest
->af
, &dest
->addr
), ntohs(dest
->port
),
1049 atomic_read(&dest
->refcnt
));
1050 if (list_empty(&ipvs
->dest_trash
) && !cleanup
)
1051 mod_timer(&ipvs
->dest_trash_timer
,
1052 jiffies
+ (IP_VS_DEST_TRASH_PERIOD
>> 1));
1053 /* dest lives in trash without reference */
1054 list_add(&dest
->t_list
, &ipvs
->dest_trash
);
1055 dest
->idle_start
= 0;
1056 spin_unlock_bh(&ipvs
->dest_trash_lock
);
1057 ip_vs_dest_put(dest
);
1062 * Unlink a destination from the given service
1064 static void __ip_vs_unlink_dest(struct ip_vs_service
*svc
,
1065 struct ip_vs_dest
*dest
,
1068 dest
->flags
&= ~IP_VS_DEST_F_AVAILABLE
;
1071 * Remove it from the d-linked destination list.
1073 list_del_rcu(&dest
->n_list
);
1076 if (dest
->af
!= svc
->af
)
1077 svc
->ipvs
->mixed_address_family_dests
--;
1080 struct ip_vs_scheduler
*sched
;
1082 sched
= rcu_dereference_protected(svc
->scheduler
, 1);
1083 if (sched
&& sched
->del_dest
)
1084 sched
->del_dest(svc
, dest
);
1090 * Delete a destination server in the given service
1093 ip_vs_del_dest(struct ip_vs_service
*svc
, struct ip_vs_dest_user_kern
*udest
)
1095 struct ip_vs_dest
*dest
;
1096 __be16 dport
= udest
->port
;
1100 /* We use function that requires RCU lock */
1102 dest
= ip_vs_lookup_dest(svc
, udest
->af
, &udest
->addr
, dport
);
1106 IP_VS_DBG(1, "%s(): destination not found!\n", __func__
);
1111 * Unlink dest from the service
1113 __ip_vs_unlink_dest(svc
, dest
, 1);
1116 * Delete the destination
1118 __ip_vs_del_dest(svc
->ipvs
, dest
, false);
1125 static void ip_vs_dest_trash_expire(unsigned long data
)
1127 struct netns_ipvs
*ipvs
= (struct netns_ipvs
*)data
;
1128 struct ip_vs_dest
*dest
, *next
;
1129 unsigned long now
= jiffies
;
1131 spin_lock(&ipvs
->dest_trash_lock
);
1132 list_for_each_entry_safe(dest
, next
, &ipvs
->dest_trash
, t_list
) {
1133 if (atomic_read(&dest
->refcnt
) > 0)
1135 if (dest
->idle_start
) {
1136 if (time_before(now
, dest
->idle_start
+
1137 IP_VS_DEST_TRASH_PERIOD
))
1140 dest
->idle_start
= max(1UL, now
);
1143 IP_VS_DBG_BUF(3, "Removing destination %u/%s:%u from trash\n",
1145 IP_VS_DBG_ADDR(dest
->af
, &dest
->addr
),
1147 list_del(&dest
->t_list
);
1148 ip_vs_dest_free(dest
);
1150 if (!list_empty(&ipvs
->dest_trash
))
1151 mod_timer(&ipvs
->dest_trash_timer
,
1152 jiffies
+ (IP_VS_DEST_TRASH_PERIOD
>> 1));
1153 spin_unlock(&ipvs
->dest_trash_lock
);
1157 * Add a service into the service hash table
1160 ip_vs_add_service(struct netns_ipvs
*ipvs
, struct ip_vs_service_user_kern
*u
,
1161 struct ip_vs_service
**svc_p
)
1164 struct ip_vs_scheduler
*sched
= NULL
;
1165 struct ip_vs_pe
*pe
= NULL
;
1166 struct ip_vs_service
*svc
= NULL
;
1168 /* increase the module use count */
1169 ip_vs_use_count_inc();
1171 /* Lookup the scheduler by 'u->sched_name' */
1172 if (strcmp(u
->sched_name
, "none")) {
1173 sched
= ip_vs_scheduler_get(u
->sched_name
);
1175 pr_info("Scheduler module ip_vs_%s not found\n",
1182 if (u
->pe_name
&& *u
->pe_name
) {
1183 pe
= ip_vs_pe_getbyname(u
->pe_name
);
1185 pr_info("persistence engine module ip_vs_pe_%s "
1186 "not found\n", u
->pe_name
);
1192 #ifdef CONFIG_IP_VS_IPV6
1193 if (u
->af
== AF_INET6
) {
1194 __u32 plen
= (__force __u32
) u
->netmask
;
1196 if (plen
< 1 || plen
> 128) {
1203 svc
= kzalloc(sizeof(struct ip_vs_service
), GFP_KERNEL
);
1205 IP_VS_DBG(1, "%s(): no memory\n", __func__
);
1209 svc
->stats
.cpustats
= alloc_percpu(struct ip_vs_cpu_stats
);
1210 if (!svc
->stats
.cpustats
) {
1215 for_each_possible_cpu(i
) {
1216 struct ip_vs_cpu_stats
*ip_vs_stats
;
1217 ip_vs_stats
= per_cpu_ptr(svc
->stats
.cpustats
, i
);
1218 u64_stats_init(&ip_vs_stats
->syncp
);
1222 /* I'm the first user of the service */
1223 atomic_set(&svc
->refcnt
, 0);
1226 svc
->protocol
= u
->protocol
;
1227 ip_vs_addr_copy(svc
->af
, &svc
->addr
, &u
->addr
);
1228 svc
->port
= u
->port
;
1229 svc
->fwmark
= u
->fwmark
;
1230 svc
->flags
= u
->flags
;
1231 svc
->timeout
= u
->timeout
* HZ
;
1232 svc
->netmask
= u
->netmask
;
1235 INIT_LIST_HEAD(&svc
->destinations
);
1236 spin_lock_init(&svc
->sched_lock
);
1237 spin_lock_init(&svc
->stats
.lock
);
1239 /* Bind the scheduler */
1241 ret
= ip_vs_bind_scheduler(svc
, sched
);
1247 /* Bind the ct retriever */
1248 RCU_INIT_POINTER(svc
->pe
, pe
);
1251 /* Update the virtual service counters */
1252 if (svc
->port
== FTPPORT
)
1253 atomic_inc(&ipvs
->ftpsvc_counter
);
1254 else if (svc
->port
== 0)
1255 atomic_inc(&ipvs
->nullsvc_counter
);
1257 ip_vs_start_estimator(ipvs
->net
, &svc
->stats
);
1259 /* Count only IPv4 services for old get/setsockopt interface */
1260 if (svc
->af
== AF_INET
)
1261 ipvs
->num_services
++;
1263 /* Hash the service into the service table */
1264 ip_vs_svc_hash(svc
);
1267 /* Now there is a service - full throttle */
1274 ip_vs_unbind_scheduler(svc
, sched
);
1275 ip_vs_service_free(svc
);
1277 ip_vs_scheduler_put(sched
);
1280 /* decrease the module use count */
1281 ip_vs_use_count_dec();
1288 * Edit a service and bind it with a new scheduler
1291 ip_vs_edit_service(struct ip_vs_service
*svc
, struct ip_vs_service_user_kern
*u
)
1293 struct ip_vs_scheduler
*sched
= NULL
, *old_sched
;
1294 struct ip_vs_pe
*pe
= NULL
, *old_pe
= NULL
;
1298 * 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
);
1321 #ifdef CONFIG_IP_VS_IPV6
1322 if (u
->af
== AF_INET6
) {
1323 __u32 plen
= (__force __u32
) u
->netmask
;
1325 if (plen
< 1 || plen
> 128) {
1332 old_sched
= rcu_dereference_protected(svc
->scheduler
, 1);
1333 if (sched
!= old_sched
) {
1335 ip_vs_unbind_scheduler(svc
, old_sched
);
1336 RCU_INIT_POINTER(svc
->scheduler
, NULL
);
1337 /* Wait all svc->sched_data users */
1340 /* Bind the new scheduler */
1342 ret
= ip_vs_bind_scheduler(svc
, sched
);
1344 ip_vs_scheduler_put(sched
);
1351 * Set the flags and timeout value
1353 svc
->flags
= u
->flags
| IP_VS_SVC_F_HASHED
;
1354 svc
->timeout
= u
->timeout
* HZ
;
1355 svc
->netmask
= u
->netmask
;
1357 old_pe
= rcu_dereference_protected(svc
->pe
, 1);
1359 rcu_assign_pointer(svc
->pe
, pe
);
1362 ip_vs_scheduler_put(old_sched
);
1363 ip_vs_pe_put(old_pe
);
1368 * Delete a service from the service list
1369 * - The service must be unlinked, unlocked and not referenced!
1370 * - We are called under _bh lock
1372 static void __ip_vs_del_service(struct ip_vs_service
*svc
, bool cleanup
)
1374 struct ip_vs_dest
*dest
, *nxt
;
1375 struct ip_vs_scheduler
*old_sched
;
1376 struct ip_vs_pe
*old_pe
;
1377 struct netns_ipvs
*ipvs
= svc
->ipvs
;
1379 pr_info("%s: enter\n", __func__
);
1381 /* Count only IPv4 services for old get/setsockopt interface */
1382 if (svc
->af
== AF_INET
)
1383 ipvs
->num_services
--;
1385 ip_vs_stop_estimator(svc
->ipvs
->net
, &svc
->stats
);
1387 /* Unbind scheduler */
1388 old_sched
= rcu_dereference_protected(svc
->scheduler
, 1);
1389 ip_vs_unbind_scheduler(svc
, old_sched
);
1390 ip_vs_scheduler_put(old_sched
);
1392 /* Unbind persistence engine, keep svc->pe */
1393 old_pe
= rcu_dereference_protected(svc
->pe
, 1);
1394 ip_vs_pe_put(old_pe
);
1397 * Unlink the whole destination list
1399 list_for_each_entry_safe(dest
, nxt
, &svc
->destinations
, n_list
) {
1400 __ip_vs_unlink_dest(svc
, dest
, 0);
1401 __ip_vs_del_dest(svc
->ipvs
, dest
, cleanup
);
1405 * Update the virtual service counters
1407 if (svc
->port
== FTPPORT
)
1408 atomic_dec(&ipvs
->ftpsvc_counter
);
1409 else if (svc
->port
== 0)
1410 atomic_dec(&ipvs
->nullsvc_counter
);
1413 * Free the service if nobody refers to it
1415 __ip_vs_svc_put(svc
, true);
1417 /* decrease the module use count */
1418 ip_vs_use_count_dec();
1422 * Unlink a service from list and try to delete it if its refcnt reached 0
1424 static void ip_vs_unlink_service(struct ip_vs_service
*svc
, bool cleanup
)
1426 /* Hold svc to avoid double release from dest_trash */
1427 atomic_inc(&svc
->refcnt
);
1429 * Unhash it from the service table
1431 ip_vs_svc_unhash(svc
);
1433 __ip_vs_del_service(svc
, cleanup
);
1437 * Delete a service from the service list
1439 static int ip_vs_del_service(struct ip_vs_service
*svc
)
1443 ip_vs_unlink_service(svc
, false);
1450 * Flush all the virtual services
1452 static int ip_vs_flush(struct netns_ipvs
*ipvs
, bool cleanup
)
1455 struct ip_vs_service
*svc
;
1456 struct hlist_node
*n
;
1459 * Flush the service table hashed by <netns,protocol,addr,port>
1461 for(idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1462 hlist_for_each_entry_safe(svc
, n
, &ip_vs_svc_table
[idx
],
1464 if (svc
->ipvs
== ipvs
)
1465 ip_vs_unlink_service(svc
, cleanup
);
1470 * Flush the service table hashed by fwmark
1472 for(idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1473 hlist_for_each_entry_safe(svc
, n
, &ip_vs_svc_fwm_table
[idx
],
1475 if (svc
->ipvs
== ipvs
)
1476 ip_vs_unlink_service(svc
, cleanup
);
1484 * Delete service by {netns} in the service table.
1485 * Called by __ip_vs_cleanup()
1487 void ip_vs_service_net_cleanup(struct netns_ipvs
*ipvs
)
1490 /* Check for "full" addressed entries */
1491 mutex_lock(&__ip_vs_mutex
);
1492 ip_vs_flush(ipvs
, true);
1493 mutex_unlock(&__ip_vs_mutex
);
1497 /* Put all references for device (dst_cache) */
1499 ip_vs_forget_dev(struct ip_vs_dest
*dest
, struct net_device
*dev
)
1501 struct ip_vs_dest_dst
*dest_dst
;
1503 spin_lock_bh(&dest
->dst_lock
);
1504 dest_dst
= rcu_dereference_protected(dest
->dest_dst
, 1);
1505 if (dest_dst
&& dest_dst
->dst_cache
->dev
== dev
) {
1506 IP_VS_DBG_BUF(3, "Reset dev:%s dest %s:%u ,dest->refcnt=%d\n",
1508 IP_VS_DBG_ADDR(dest
->af
, &dest
->addr
),
1510 atomic_read(&dest
->refcnt
));
1511 __ip_vs_dst_cache_reset(dest
);
1513 spin_unlock_bh(&dest
->dst_lock
);
1516 /* Netdev event receiver
1517 * Currently only NETDEV_DOWN is handled to release refs to cached dsts
1519 static int ip_vs_dst_event(struct notifier_block
*this, unsigned long event
,
1522 struct net_device
*dev
= netdev_notifier_info_to_dev(ptr
);
1523 struct net
*net
= dev_net(dev
);
1524 struct netns_ipvs
*ipvs
= net_ipvs(net
);
1525 struct ip_vs_service
*svc
;
1526 struct ip_vs_dest
*dest
;
1529 if (event
!= NETDEV_DOWN
|| !ipvs
)
1531 IP_VS_DBG(3, "%s() dev=%s\n", __func__
, dev
->name
);
1533 mutex_lock(&__ip_vs_mutex
);
1534 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1535 hlist_for_each_entry(svc
, &ip_vs_svc_table
[idx
], s_list
) {
1536 if (svc
->ipvs
== ipvs
) {
1537 list_for_each_entry(dest
, &svc
->destinations
,
1539 ip_vs_forget_dev(dest
, dev
);
1544 hlist_for_each_entry(svc
, &ip_vs_svc_fwm_table
[idx
], f_list
) {
1545 if (svc
->ipvs
== ipvs
) {
1546 list_for_each_entry(dest
, &svc
->destinations
,
1548 ip_vs_forget_dev(dest
, dev
);
1555 spin_lock_bh(&ipvs
->dest_trash_lock
);
1556 list_for_each_entry(dest
, &ipvs
->dest_trash
, t_list
) {
1557 ip_vs_forget_dev(dest
, dev
);
1559 spin_unlock_bh(&ipvs
->dest_trash_lock
);
1560 mutex_unlock(&__ip_vs_mutex
);
1566 * Zero counters in a service or all services
1568 static int ip_vs_zero_service(struct ip_vs_service
*svc
)
1570 struct ip_vs_dest
*dest
;
1572 list_for_each_entry(dest
, &svc
->destinations
, n_list
) {
1573 ip_vs_zero_stats(&dest
->stats
);
1575 ip_vs_zero_stats(&svc
->stats
);
1579 static int ip_vs_zero_all(struct netns_ipvs
*ipvs
)
1582 struct ip_vs_service
*svc
;
1584 for(idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1585 hlist_for_each_entry(svc
, &ip_vs_svc_table
[idx
], s_list
) {
1586 if (svc
->ipvs
== ipvs
)
1587 ip_vs_zero_service(svc
);
1591 for(idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1592 hlist_for_each_entry(svc
, &ip_vs_svc_fwm_table
[idx
], f_list
) {
1593 if (svc
->ipvs
== ipvs
)
1594 ip_vs_zero_service(svc
);
1598 ip_vs_zero_stats(&ipvs
->tot_stats
);
1602 #ifdef CONFIG_SYSCTL
1605 static int three
= 3;
1608 proc_do_defense_mode(struct ctl_table
*table
, int write
,
1609 void __user
*buffer
, size_t *lenp
, loff_t
*ppos
)
1611 struct netns_ipvs
*ipvs
= table
->extra2
;
1612 int *valp
= table
->data
;
1616 rc
= proc_dointvec(table
, write
, buffer
, lenp
, ppos
);
1617 if (write
&& (*valp
!= val
)) {
1618 if ((*valp
< 0) || (*valp
> 3)) {
1619 /* Restore the correct value */
1622 update_defense_level(ipvs
);
1629 proc_do_sync_threshold(struct ctl_table
*table
, int write
,
1630 void __user
*buffer
, size_t *lenp
, loff_t
*ppos
)
1632 int *valp
= table
->data
;
1636 /* backup the value first */
1637 memcpy(val
, valp
, sizeof(val
));
1639 rc
= proc_dointvec(table
, write
, buffer
, lenp
, ppos
);
1640 if (write
&& (valp
[0] < 0 || valp
[1] < 0 ||
1641 (valp
[0] >= valp
[1] && valp
[1]))) {
1642 /* Restore the correct value */
1643 memcpy(valp
, val
, sizeof(val
));
1649 proc_do_sync_mode(struct ctl_table
*table
, int write
,
1650 void __user
*buffer
, size_t *lenp
, loff_t
*ppos
)
1652 int *valp
= table
->data
;
1656 rc
= proc_dointvec(table
, write
, buffer
, lenp
, ppos
);
1657 if (write
&& (*valp
!= val
)) {
1658 if ((*valp
< 0) || (*valp
> 1)) {
1659 /* Restore the correct value */
1667 proc_do_sync_ports(struct ctl_table
*table
, int write
,
1668 void __user
*buffer
, size_t *lenp
, loff_t
*ppos
)
1670 int *valp
= table
->data
;
1674 rc
= proc_dointvec(table
, write
, buffer
, lenp
, ppos
);
1675 if (write
&& (*valp
!= val
)) {
1676 if (*valp
< 1 || !is_power_of_2(*valp
)) {
1677 /* Restore the correct value */
1685 * IPVS sysctl table (under the /proc/sys/net/ipv4/vs/)
1686 * Do not change order or insert new entries without
1687 * align with netns init in ip_vs_control_net_init()
1690 static struct ctl_table vs_vars
[] = {
1692 .procname
= "amemthresh",
1693 .maxlen
= sizeof(int),
1695 .proc_handler
= proc_dointvec
,
1698 .procname
= "am_droprate",
1699 .maxlen
= sizeof(int),
1701 .proc_handler
= proc_dointvec
,
1704 .procname
= "drop_entry",
1705 .maxlen
= sizeof(int),
1707 .proc_handler
= proc_do_defense_mode
,
1710 .procname
= "drop_packet",
1711 .maxlen
= sizeof(int),
1713 .proc_handler
= proc_do_defense_mode
,
1715 #ifdef CONFIG_IP_VS_NFCT
1717 .procname
= "conntrack",
1718 .maxlen
= sizeof(int),
1720 .proc_handler
= &proc_dointvec
,
1724 .procname
= "secure_tcp",
1725 .maxlen
= sizeof(int),
1727 .proc_handler
= proc_do_defense_mode
,
1730 .procname
= "snat_reroute",
1731 .maxlen
= sizeof(int),
1733 .proc_handler
= &proc_dointvec
,
1736 .procname
= "sync_version",
1737 .maxlen
= sizeof(int),
1739 .proc_handler
= &proc_do_sync_mode
,
1742 .procname
= "sync_ports",
1743 .maxlen
= sizeof(int),
1745 .proc_handler
= &proc_do_sync_ports
,
1748 .procname
= "sync_persist_mode",
1749 .maxlen
= sizeof(int),
1751 .proc_handler
= proc_dointvec
,
1754 .procname
= "sync_qlen_max",
1755 .maxlen
= sizeof(unsigned long),
1757 .proc_handler
= proc_doulongvec_minmax
,
1760 .procname
= "sync_sock_size",
1761 .maxlen
= sizeof(int),
1763 .proc_handler
= proc_dointvec
,
1766 .procname
= "cache_bypass",
1767 .maxlen
= sizeof(int),
1769 .proc_handler
= proc_dointvec
,
1772 .procname
= "expire_nodest_conn",
1773 .maxlen
= sizeof(int),
1775 .proc_handler
= proc_dointvec
,
1778 .procname
= "sloppy_tcp",
1779 .maxlen
= sizeof(int),
1781 .proc_handler
= proc_dointvec
,
1784 .procname
= "sloppy_sctp",
1785 .maxlen
= sizeof(int),
1787 .proc_handler
= proc_dointvec
,
1790 .procname
= "expire_quiescent_template",
1791 .maxlen
= sizeof(int),
1793 .proc_handler
= proc_dointvec
,
1796 .procname
= "sync_threshold",
1798 sizeof(((struct netns_ipvs
*)0)->sysctl_sync_threshold
),
1800 .proc_handler
= proc_do_sync_threshold
,
1803 .procname
= "sync_refresh_period",
1804 .maxlen
= sizeof(int),
1806 .proc_handler
= proc_dointvec_jiffies
,
1809 .procname
= "sync_retries",
1810 .maxlen
= sizeof(int),
1812 .proc_handler
= proc_dointvec_minmax
,
1817 .procname
= "nat_icmp_send",
1818 .maxlen
= sizeof(int),
1820 .proc_handler
= proc_dointvec
,
1823 .procname
= "pmtu_disc",
1824 .maxlen
= sizeof(int),
1826 .proc_handler
= proc_dointvec
,
1829 .procname
= "backup_only",
1830 .maxlen
= sizeof(int),
1832 .proc_handler
= proc_dointvec
,
1835 .procname
= "conn_reuse_mode",
1836 .maxlen
= sizeof(int),
1838 .proc_handler
= proc_dointvec
,
1841 .procname
= "schedule_icmp",
1842 .maxlen
= sizeof(int),
1844 .proc_handler
= proc_dointvec
,
1847 .procname
= "ignore_tunneled",
1848 .maxlen
= sizeof(int),
1850 .proc_handler
= proc_dointvec
,
1852 #ifdef CONFIG_IP_VS_DEBUG
1854 .procname
= "debug_level",
1855 .data
= &sysctl_ip_vs_debug_level
,
1856 .maxlen
= sizeof(int),
1858 .proc_handler
= proc_dointvec
,
1866 #ifdef CONFIG_PROC_FS
1869 struct seq_net_private p
; /* Do not move this, netns depends upon it*/
1870 struct hlist_head
*table
;
1875 * Write the contents of the VS rule table to a PROCfs file.
1876 * (It is kept just for backward compatibility)
1878 static inline const char *ip_vs_fwd_name(unsigned int flags
)
1880 switch (flags
& IP_VS_CONN_F_FWD_MASK
) {
1881 case IP_VS_CONN_F_LOCALNODE
:
1883 case IP_VS_CONN_F_TUNNEL
:
1885 case IP_VS_CONN_F_DROUTE
:
1893 /* Get the Nth entry in the two lists */
1894 static struct ip_vs_service
*ip_vs_info_array(struct seq_file
*seq
, loff_t pos
)
1896 struct net
*net
= seq_file_net(seq
);
1897 struct netns_ipvs
*ipvs
= net_ipvs(net
);
1898 struct ip_vs_iter
*iter
= seq
->private;
1900 struct ip_vs_service
*svc
;
1902 /* look in hash by protocol */
1903 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1904 hlist_for_each_entry_rcu(svc
, &ip_vs_svc_table
[idx
], s_list
) {
1905 if ((svc
->ipvs
== ipvs
) && pos
-- == 0) {
1906 iter
->table
= ip_vs_svc_table
;
1913 /* keep looking in fwmark */
1914 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1915 hlist_for_each_entry_rcu(svc
, &ip_vs_svc_fwm_table
[idx
],
1917 if ((svc
->ipvs
== ipvs
) && pos
-- == 0) {
1918 iter
->table
= ip_vs_svc_fwm_table
;
1928 static void *ip_vs_info_seq_start(struct seq_file
*seq
, loff_t
*pos
)
1932 return *pos
? ip_vs_info_array(seq
, *pos
- 1) : SEQ_START_TOKEN
;
1936 static void *ip_vs_info_seq_next(struct seq_file
*seq
, void *v
, loff_t
*pos
)
1938 struct hlist_node
*e
;
1939 struct ip_vs_iter
*iter
;
1940 struct ip_vs_service
*svc
;
1943 if (v
== SEQ_START_TOKEN
)
1944 return ip_vs_info_array(seq
,0);
1947 iter
= seq
->private;
1949 if (iter
->table
== ip_vs_svc_table
) {
1950 /* next service in table hashed by protocol */
1951 e
= rcu_dereference(hlist_next_rcu(&svc
->s_list
));
1953 return hlist_entry(e
, struct ip_vs_service
, s_list
);
1955 while (++iter
->bucket
< IP_VS_SVC_TAB_SIZE
) {
1956 hlist_for_each_entry_rcu(svc
,
1957 &ip_vs_svc_table
[iter
->bucket
],
1963 iter
->table
= ip_vs_svc_fwm_table
;
1968 /* next service in hashed by fwmark */
1969 e
= rcu_dereference(hlist_next_rcu(&svc
->f_list
));
1971 return hlist_entry(e
, struct ip_vs_service
, f_list
);
1974 while (++iter
->bucket
< IP_VS_SVC_TAB_SIZE
) {
1975 hlist_for_each_entry_rcu(svc
,
1976 &ip_vs_svc_fwm_table
[iter
->bucket
],
1984 static void ip_vs_info_seq_stop(struct seq_file
*seq
, void *v
)
1991 static int ip_vs_info_seq_show(struct seq_file
*seq
, void *v
)
1993 if (v
== SEQ_START_TOKEN
) {
1995 "IP Virtual Server version %d.%d.%d (size=%d)\n",
1996 NVERSION(IP_VS_VERSION_CODE
), ip_vs_conn_tab_size
);
1998 "Prot LocalAddress:Port Scheduler Flags\n");
2000 " -> RemoteAddress:Port Forward Weight ActiveConn InActConn\n");
2002 const struct ip_vs_service
*svc
= v
;
2003 const struct ip_vs_iter
*iter
= seq
->private;
2004 const struct ip_vs_dest
*dest
;
2005 struct ip_vs_scheduler
*sched
= rcu_dereference(svc
->scheduler
);
2006 char *sched_name
= sched
? sched
->name
: "none";
2008 if (iter
->table
== ip_vs_svc_table
) {
2009 #ifdef CONFIG_IP_VS_IPV6
2010 if (svc
->af
== AF_INET6
)
2011 seq_printf(seq
, "%s [%pI6]:%04X %s ",
2012 ip_vs_proto_name(svc
->protocol
),
2018 seq_printf(seq
, "%s %08X:%04X %s %s ",
2019 ip_vs_proto_name(svc
->protocol
),
2020 ntohl(svc
->addr
.ip
),
2023 (svc
->flags
& IP_VS_SVC_F_ONEPACKET
)?"ops ":"");
2025 seq_printf(seq
, "FWM %08X %s %s",
2026 svc
->fwmark
, sched_name
,
2027 (svc
->flags
& IP_VS_SVC_F_ONEPACKET
)?"ops ":"");
2030 if (svc
->flags
& IP_VS_SVC_F_PERSISTENT
)
2031 seq_printf(seq
, "persistent %d %08X\n",
2033 ntohl(svc
->netmask
));
2035 seq_putc(seq
, '\n');
2037 list_for_each_entry_rcu(dest
, &svc
->destinations
, n_list
) {
2038 #ifdef CONFIG_IP_VS_IPV6
2039 if (dest
->af
== AF_INET6
)
2042 " %-7s %-6d %-10d %-10d\n",
2045 ip_vs_fwd_name(atomic_read(&dest
->conn_flags
)),
2046 atomic_read(&dest
->weight
),
2047 atomic_read(&dest
->activeconns
),
2048 atomic_read(&dest
->inactconns
));
2053 "%-7s %-6d %-10d %-10d\n",
2054 ntohl(dest
->addr
.ip
),
2056 ip_vs_fwd_name(atomic_read(&dest
->conn_flags
)),
2057 atomic_read(&dest
->weight
),
2058 atomic_read(&dest
->activeconns
),
2059 atomic_read(&dest
->inactconns
));
2066 static const struct seq_operations ip_vs_info_seq_ops
= {
2067 .start
= ip_vs_info_seq_start
,
2068 .next
= ip_vs_info_seq_next
,
2069 .stop
= ip_vs_info_seq_stop
,
2070 .show
= ip_vs_info_seq_show
,
2073 static int ip_vs_info_open(struct inode
*inode
, struct file
*file
)
2075 return seq_open_net(inode
, file
, &ip_vs_info_seq_ops
,
2076 sizeof(struct ip_vs_iter
));
2079 static const struct file_operations ip_vs_info_fops
= {
2080 .owner
= THIS_MODULE
,
2081 .open
= ip_vs_info_open
,
2083 .llseek
= seq_lseek
,
2084 .release
= seq_release_net
,
2087 static int ip_vs_stats_show(struct seq_file
*seq
, void *v
)
2089 struct net
*net
= seq_file_single_net(seq
);
2090 struct ip_vs_kstats show
;
2092 /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */
2094 " Total Incoming Outgoing Incoming Outgoing\n");
2096 " Conns Packets Packets Bytes Bytes\n");
2098 ip_vs_copy_stats(&show
, &net_ipvs(net
)->tot_stats
);
2099 seq_printf(seq
, "%8LX %8LX %8LX %16LX %16LX\n\n",
2100 (unsigned long long)show
.conns
,
2101 (unsigned long long)show
.inpkts
,
2102 (unsigned long long)show
.outpkts
,
2103 (unsigned long long)show
.inbytes
,
2104 (unsigned long long)show
.outbytes
);
2106 /* 01234567 01234567 01234567 0123456701234567 0123456701234567*/
2108 " Conns/s Pkts/s Pkts/s Bytes/s Bytes/s\n");
2109 seq_printf(seq
, "%8LX %8LX %8LX %16LX %16LX\n",
2110 (unsigned long long)show
.cps
,
2111 (unsigned long long)show
.inpps
,
2112 (unsigned long long)show
.outpps
,
2113 (unsigned long long)show
.inbps
,
2114 (unsigned long long)show
.outbps
);
2119 static int ip_vs_stats_seq_open(struct inode
*inode
, struct file
*file
)
2121 return single_open_net(inode
, file
, ip_vs_stats_show
);
2124 static const struct file_operations ip_vs_stats_fops
= {
2125 .owner
= THIS_MODULE
,
2126 .open
= ip_vs_stats_seq_open
,
2128 .llseek
= seq_lseek
,
2129 .release
= single_release_net
,
2132 static int ip_vs_stats_percpu_show(struct seq_file
*seq
, void *v
)
2134 struct net
*net
= seq_file_single_net(seq
);
2135 struct ip_vs_stats
*tot_stats
= &net_ipvs(net
)->tot_stats
;
2136 struct ip_vs_cpu_stats __percpu
*cpustats
= tot_stats
->cpustats
;
2137 struct ip_vs_kstats kstats
;
2140 /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */
2142 " Total Incoming Outgoing Incoming Outgoing\n");
2144 "CPU Conns Packets Packets Bytes Bytes\n");
2146 for_each_possible_cpu(i
) {
2147 struct ip_vs_cpu_stats
*u
= per_cpu_ptr(cpustats
, i
);
2149 u64 conns
, inpkts
, outpkts
, inbytes
, outbytes
;
2152 start
= u64_stats_fetch_begin_irq(&u
->syncp
);
2153 conns
= u
->cnt
.conns
;
2154 inpkts
= u
->cnt
.inpkts
;
2155 outpkts
= u
->cnt
.outpkts
;
2156 inbytes
= u
->cnt
.inbytes
;
2157 outbytes
= u
->cnt
.outbytes
;
2158 } while (u64_stats_fetch_retry_irq(&u
->syncp
, start
));
2160 seq_printf(seq
, "%3X %8LX %8LX %8LX %16LX %16LX\n",
2161 i
, (u64
)conns
, (u64
)inpkts
,
2162 (u64
)outpkts
, (u64
)inbytes
,
2166 ip_vs_copy_stats(&kstats
, tot_stats
);
2168 seq_printf(seq
, " ~ %8LX %8LX %8LX %16LX %16LX\n\n",
2169 (unsigned long long)kstats
.conns
,
2170 (unsigned long long)kstats
.inpkts
,
2171 (unsigned long long)kstats
.outpkts
,
2172 (unsigned long long)kstats
.inbytes
,
2173 (unsigned long long)kstats
.outbytes
);
2175 /* ... 01234567 01234567 01234567 0123456701234567 0123456701234567 */
2177 " Conns/s Pkts/s Pkts/s Bytes/s Bytes/s\n");
2178 seq_printf(seq
, " %8LX %8LX %8LX %16LX %16LX\n",
2188 static int ip_vs_stats_percpu_seq_open(struct inode
*inode
, struct file
*file
)
2190 return single_open_net(inode
, file
, ip_vs_stats_percpu_show
);
2193 static const struct file_operations ip_vs_stats_percpu_fops
= {
2194 .owner
= THIS_MODULE
,
2195 .open
= ip_vs_stats_percpu_seq_open
,
2197 .llseek
= seq_lseek
,
2198 .release
= single_release_net
,
2203 * Set timeout values for tcp tcpfin udp in the timeout_table.
2205 static int ip_vs_set_timeout(struct netns_ipvs
*ipvs
, struct ip_vs_timeout_user
*u
)
2207 #if defined(CONFIG_IP_VS_PROTO_TCP) || defined(CONFIG_IP_VS_PROTO_UDP)
2208 struct ip_vs_proto_data
*pd
;
2211 IP_VS_DBG(2, "Setting timeout tcp:%d tcpfin:%d udp:%d\n",
2216 #ifdef CONFIG_IP_VS_PROTO_TCP
2217 if (u
->tcp_timeout
) {
2218 pd
= ip_vs_proto_data_get(ipvs
, IPPROTO_TCP
);
2219 pd
->timeout_table
[IP_VS_TCP_S_ESTABLISHED
]
2220 = u
->tcp_timeout
* HZ
;
2223 if (u
->tcp_fin_timeout
) {
2224 pd
= ip_vs_proto_data_get(ipvs
, IPPROTO_TCP
);
2225 pd
->timeout_table
[IP_VS_TCP_S_FIN_WAIT
]
2226 = u
->tcp_fin_timeout
* HZ
;
2230 #ifdef CONFIG_IP_VS_PROTO_UDP
2231 if (u
->udp_timeout
) {
2232 pd
= ip_vs_proto_data_get(ipvs
, IPPROTO_UDP
);
2233 pd
->timeout_table
[IP_VS_UDP_S_NORMAL
]
2234 = u
->udp_timeout
* HZ
;
2240 #define CMDID(cmd) (cmd - IP_VS_BASE_CTL)
2242 struct ip_vs_svcdest_user
{
2243 struct ip_vs_service_user s
;
2244 struct ip_vs_dest_user d
;
2247 static const unsigned char set_arglen
[CMDID(IP_VS_SO_SET_MAX
) + 1] = {
2248 [CMDID(IP_VS_SO_SET_ADD
)] = sizeof(struct ip_vs_service_user
),
2249 [CMDID(IP_VS_SO_SET_EDIT
)] = sizeof(struct ip_vs_service_user
),
2250 [CMDID(IP_VS_SO_SET_DEL
)] = sizeof(struct ip_vs_service_user
),
2251 [CMDID(IP_VS_SO_SET_ADDDEST
)] = sizeof(struct ip_vs_svcdest_user
),
2252 [CMDID(IP_VS_SO_SET_DELDEST
)] = sizeof(struct ip_vs_svcdest_user
),
2253 [CMDID(IP_VS_SO_SET_EDITDEST
)] = sizeof(struct ip_vs_svcdest_user
),
2254 [CMDID(IP_VS_SO_SET_TIMEOUT
)] = sizeof(struct ip_vs_timeout_user
),
2255 [CMDID(IP_VS_SO_SET_STARTDAEMON
)] = sizeof(struct ip_vs_daemon_user
),
2256 [CMDID(IP_VS_SO_SET_STOPDAEMON
)] = sizeof(struct ip_vs_daemon_user
),
2257 [CMDID(IP_VS_SO_SET_ZERO
)] = sizeof(struct ip_vs_service_user
),
2260 union ip_vs_set_arglen
{
2261 struct ip_vs_service_user field_IP_VS_SO_SET_ADD
;
2262 struct ip_vs_service_user field_IP_VS_SO_SET_EDIT
;
2263 struct ip_vs_service_user field_IP_VS_SO_SET_DEL
;
2264 struct ip_vs_svcdest_user field_IP_VS_SO_SET_ADDDEST
;
2265 struct ip_vs_svcdest_user field_IP_VS_SO_SET_DELDEST
;
2266 struct ip_vs_svcdest_user field_IP_VS_SO_SET_EDITDEST
;
2267 struct ip_vs_timeout_user field_IP_VS_SO_SET_TIMEOUT
;
2268 struct ip_vs_daemon_user field_IP_VS_SO_SET_STARTDAEMON
;
2269 struct ip_vs_daemon_user field_IP_VS_SO_SET_STOPDAEMON
;
2270 struct ip_vs_service_user field_IP_VS_SO_SET_ZERO
;
2273 #define MAX_SET_ARGLEN sizeof(union ip_vs_set_arglen)
2275 static void ip_vs_copy_usvc_compat(struct ip_vs_service_user_kern
*usvc
,
2276 struct ip_vs_service_user
*usvc_compat
)
2278 memset(usvc
, 0, sizeof(*usvc
));
2281 usvc
->protocol
= usvc_compat
->protocol
;
2282 usvc
->addr
.ip
= usvc_compat
->addr
;
2283 usvc
->port
= usvc_compat
->port
;
2284 usvc
->fwmark
= usvc_compat
->fwmark
;
2286 /* Deep copy of sched_name is not needed here */
2287 usvc
->sched_name
= usvc_compat
->sched_name
;
2289 usvc
->flags
= usvc_compat
->flags
;
2290 usvc
->timeout
= usvc_compat
->timeout
;
2291 usvc
->netmask
= usvc_compat
->netmask
;
2294 static void ip_vs_copy_udest_compat(struct ip_vs_dest_user_kern
*udest
,
2295 struct ip_vs_dest_user
*udest_compat
)
2297 memset(udest
, 0, sizeof(*udest
));
2299 udest
->addr
.ip
= udest_compat
->addr
;
2300 udest
->port
= udest_compat
->port
;
2301 udest
->conn_flags
= udest_compat
->conn_flags
;
2302 udest
->weight
= udest_compat
->weight
;
2303 udest
->u_threshold
= udest_compat
->u_threshold
;
2304 udest
->l_threshold
= udest_compat
->l_threshold
;
2305 udest
->af
= AF_INET
;
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_SET_ARGLEN
];
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 BUILD_BUG_ON(sizeof(arg
) > 255);
2322 if (!ns_capable(sock_net(sk
)->user_ns
, CAP_NET_ADMIN
))
2325 if (cmd
< IP_VS_BASE_CTL
|| cmd
> IP_VS_SO_SET_MAX
)
2327 if (len
!= set_arglen
[CMDID(cmd
)]) {
2328 IP_VS_DBG(1, "set_ctl: len %u != %u\n",
2329 len
, set_arglen
[CMDID(cmd
)]);
2333 if (copy_from_user(arg
, user
, len
) != 0)
2336 /* increase the module use count */
2337 ip_vs_use_count_inc();
2339 /* Handle daemons since they have another lock */
2340 if (cmd
== IP_VS_SO_SET_STARTDAEMON
||
2341 cmd
== IP_VS_SO_SET_STOPDAEMON
) {
2342 struct ip_vs_daemon_user
*dm
= (struct ip_vs_daemon_user
*)arg
;
2344 if (cmd
== IP_VS_SO_SET_STARTDAEMON
) {
2345 struct ipvs_sync_daemon_cfg cfg
;
2347 memset(&cfg
, 0, sizeof(cfg
));
2348 strlcpy(cfg
.mcast_ifn
, dm
->mcast_ifn
,
2349 sizeof(cfg
.mcast_ifn
));
2350 cfg
.syncid
= dm
->syncid
;
2352 mutex_lock(&ipvs
->sync_mutex
);
2353 ret
= start_sync_thread(ipvs
, &cfg
, dm
->state
);
2354 mutex_unlock(&ipvs
->sync_mutex
);
2357 mutex_lock(&ipvs
->sync_mutex
);
2358 ret
= stop_sync_thread(net
, dm
->state
);
2359 mutex_unlock(&ipvs
->sync_mutex
);
2364 mutex_lock(&__ip_vs_mutex
);
2365 if (cmd
== IP_VS_SO_SET_FLUSH
) {
2366 /* Flush the virtual service */
2367 ret
= ip_vs_flush(ipvs
, false);
2369 } else if (cmd
== IP_VS_SO_SET_TIMEOUT
) {
2370 /* Set timeout values for (tcp tcpfin udp) */
2371 ret
= ip_vs_set_timeout(ipvs
, (struct ip_vs_timeout_user
*)arg
);
2375 usvc_compat
= (struct ip_vs_service_user
*)arg
;
2376 udest_compat
= (struct ip_vs_dest_user
*)(usvc_compat
+ 1);
2378 /* We only use the new structs internally, so copy userspace compat
2379 * structs to extended internal versions */
2380 ip_vs_copy_usvc_compat(&usvc
, usvc_compat
);
2381 ip_vs_copy_udest_compat(&udest
, udest_compat
);
2383 if (cmd
== IP_VS_SO_SET_ZERO
) {
2384 /* if no service address is set, zero counters in all */
2385 if (!usvc
.fwmark
&& !usvc
.addr
.ip
&& !usvc
.port
) {
2386 ret
= ip_vs_zero_all(ipvs
);
2391 /* Check for valid protocol: TCP or UDP or SCTP, even for fwmark!=0 */
2392 if (usvc
.protocol
!= IPPROTO_TCP
&& usvc
.protocol
!= IPPROTO_UDP
&&
2393 usvc
.protocol
!= IPPROTO_SCTP
) {
2394 pr_err("set_ctl: invalid protocol: %d %pI4:%d %s\n",
2395 usvc
.protocol
, &usvc
.addr
.ip
,
2396 ntohs(usvc
.port
), usvc
.sched_name
);
2401 /* Lookup the exact service by <protocol, addr, port> or fwmark */
2403 if (usvc
.fwmark
== 0)
2404 svc
= __ip_vs_service_find(ipvs
, usvc
.af
, usvc
.protocol
,
2405 &usvc
.addr
, usvc
.port
);
2407 svc
= __ip_vs_svc_fwm_find(ipvs
, usvc
.af
, usvc
.fwmark
);
2410 if (cmd
!= IP_VS_SO_SET_ADD
2411 && (svc
== NULL
|| svc
->protocol
!= usvc
.protocol
)) {
2417 case IP_VS_SO_SET_ADD
:
2421 ret
= ip_vs_add_service(ipvs
, &usvc
, &svc
);
2423 case IP_VS_SO_SET_EDIT
:
2424 ret
= ip_vs_edit_service(svc
, &usvc
);
2426 case IP_VS_SO_SET_DEL
:
2427 ret
= ip_vs_del_service(svc
);
2431 case IP_VS_SO_SET_ZERO
:
2432 ret
= ip_vs_zero_service(svc
);
2434 case IP_VS_SO_SET_ADDDEST
:
2435 ret
= ip_vs_add_dest(svc
, &udest
);
2437 case IP_VS_SO_SET_EDITDEST
:
2438 ret
= ip_vs_edit_dest(svc
, &udest
);
2440 case IP_VS_SO_SET_DELDEST
:
2441 ret
= ip_vs_del_dest(svc
, &udest
);
2448 mutex_unlock(&__ip_vs_mutex
);
2450 /* decrease the module use count */
2451 ip_vs_use_count_dec();
2458 ip_vs_copy_service(struct ip_vs_service_entry
*dst
, struct ip_vs_service
*src
)
2460 struct ip_vs_scheduler
*sched
;
2461 struct ip_vs_kstats kstats
;
2464 sched
= rcu_dereference_protected(src
->scheduler
, 1);
2465 sched_name
= sched
? sched
->name
: "none";
2466 dst
->protocol
= src
->protocol
;
2467 dst
->addr
= src
->addr
.ip
;
2468 dst
->port
= src
->port
;
2469 dst
->fwmark
= src
->fwmark
;
2470 strlcpy(dst
->sched_name
, sched_name
, sizeof(dst
->sched_name
));
2471 dst
->flags
= src
->flags
;
2472 dst
->timeout
= src
->timeout
/ HZ
;
2473 dst
->netmask
= src
->netmask
;
2474 dst
->num_dests
= src
->num_dests
;
2475 ip_vs_copy_stats(&kstats
, &src
->stats
);
2476 ip_vs_export_stats_user(&dst
->stats
, &kstats
);
2480 __ip_vs_get_service_entries(struct netns_ipvs
*ipvs
,
2481 const struct ip_vs_get_services
*get
,
2482 struct ip_vs_get_services __user
*uptr
)
2485 struct ip_vs_service
*svc
;
2486 struct ip_vs_service_entry entry
;
2489 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
2490 hlist_for_each_entry(svc
, &ip_vs_svc_table
[idx
], s_list
) {
2491 /* Only expose IPv4 entries to old interface */
2492 if (svc
->af
!= AF_INET
|| (svc
->ipvs
!= ipvs
))
2495 if (count
>= get
->num_services
)
2497 memset(&entry
, 0, sizeof(entry
));
2498 ip_vs_copy_service(&entry
, svc
);
2499 if (copy_to_user(&uptr
->entrytable
[count
],
2500 &entry
, sizeof(entry
))) {
2508 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
2509 hlist_for_each_entry(svc
, &ip_vs_svc_fwm_table
[idx
], f_list
) {
2510 /* Only expose IPv4 entries to old interface */
2511 if (svc
->af
!= AF_INET
|| (svc
->ipvs
!= ipvs
))
2514 if (count
>= get
->num_services
)
2516 memset(&entry
, 0, sizeof(entry
));
2517 ip_vs_copy_service(&entry
, svc
);
2518 if (copy_to_user(&uptr
->entrytable
[count
],
2519 &entry
, sizeof(entry
))) {
2531 __ip_vs_get_dest_entries(struct netns_ipvs
*ipvs
, const struct ip_vs_get_dests
*get
,
2532 struct ip_vs_get_dests __user
*uptr
)
2534 struct ip_vs_service
*svc
;
2535 union nf_inet_addr addr
= { .ip
= get
->addr
};
2540 svc
= __ip_vs_svc_fwm_find(ipvs
, AF_INET
, get
->fwmark
);
2542 svc
= __ip_vs_service_find(ipvs
, AF_INET
, get
->protocol
, &addr
,
2548 struct ip_vs_dest
*dest
;
2549 struct ip_vs_dest_entry entry
;
2550 struct ip_vs_kstats kstats
;
2552 memset(&entry
, 0, sizeof(entry
));
2553 list_for_each_entry(dest
, &svc
->destinations
, n_list
) {
2554 if (count
>= get
->num_dests
)
2557 /* Cannot expose heterogeneous members via sockopt
2560 if (dest
->af
!= svc
->af
)
2563 entry
.addr
= dest
->addr
.ip
;
2564 entry
.port
= dest
->port
;
2565 entry
.conn_flags
= atomic_read(&dest
->conn_flags
);
2566 entry
.weight
= atomic_read(&dest
->weight
);
2567 entry
.u_threshold
= dest
->u_threshold
;
2568 entry
.l_threshold
= dest
->l_threshold
;
2569 entry
.activeconns
= atomic_read(&dest
->activeconns
);
2570 entry
.inactconns
= atomic_read(&dest
->inactconns
);
2571 entry
.persistconns
= atomic_read(&dest
->persistconns
);
2572 ip_vs_copy_stats(&kstats
, &dest
->stats
);
2573 ip_vs_export_stats_user(&entry
.stats
, &kstats
);
2574 if (copy_to_user(&uptr
->entrytable
[count
],
2575 &entry
, sizeof(entry
))) {
2587 __ip_vs_get_timeouts(struct netns_ipvs
*ipvs
, struct ip_vs_timeout_user
*u
)
2589 #if defined(CONFIG_IP_VS_PROTO_TCP) || defined(CONFIG_IP_VS_PROTO_UDP)
2590 struct ip_vs_proto_data
*pd
;
2593 memset(u
, 0, sizeof (*u
));
2595 #ifdef CONFIG_IP_VS_PROTO_TCP
2596 pd
= ip_vs_proto_data_get(ipvs
, IPPROTO_TCP
);
2597 u
->tcp_timeout
= pd
->timeout_table
[IP_VS_TCP_S_ESTABLISHED
] / HZ
;
2598 u
->tcp_fin_timeout
= pd
->timeout_table
[IP_VS_TCP_S_FIN_WAIT
] / HZ
;
2600 #ifdef CONFIG_IP_VS_PROTO_UDP
2601 pd
= ip_vs_proto_data_get(ipvs
, IPPROTO_UDP
);
2603 pd
->timeout_table
[IP_VS_UDP_S_NORMAL
] / HZ
;
2607 static const unsigned char get_arglen
[CMDID(IP_VS_SO_GET_MAX
) + 1] = {
2608 [CMDID(IP_VS_SO_GET_VERSION
)] = 64,
2609 [CMDID(IP_VS_SO_GET_INFO
)] = sizeof(struct ip_vs_getinfo
),
2610 [CMDID(IP_VS_SO_GET_SERVICES
)] = sizeof(struct ip_vs_get_services
),
2611 [CMDID(IP_VS_SO_GET_SERVICE
)] = sizeof(struct ip_vs_service_entry
),
2612 [CMDID(IP_VS_SO_GET_DESTS
)] = sizeof(struct ip_vs_get_dests
),
2613 [CMDID(IP_VS_SO_GET_TIMEOUT
)] = sizeof(struct ip_vs_timeout_user
),
2614 [CMDID(IP_VS_SO_GET_DAEMON
)] = 2 * sizeof(struct ip_vs_daemon_user
),
2617 union ip_vs_get_arglen
{
2618 char field_IP_VS_SO_GET_VERSION
[64];
2619 struct ip_vs_getinfo field_IP_VS_SO_GET_INFO
;
2620 struct ip_vs_get_services field_IP_VS_SO_GET_SERVICES
;
2621 struct ip_vs_service_entry field_IP_VS_SO_GET_SERVICE
;
2622 struct ip_vs_get_dests field_IP_VS_SO_GET_DESTS
;
2623 struct ip_vs_timeout_user field_IP_VS_SO_GET_TIMEOUT
;
2624 struct ip_vs_daemon_user field_IP_VS_SO_GET_DAEMON
[2];
2627 #define MAX_GET_ARGLEN sizeof(union ip_vs_get_arglen)
2630 do_ip_vs_get_ctl(struct sock
*sk
, int cmd
, void __user
*user
, int *len
)
2632 unsigned char arg
[MAX_GET_ARGLEN
];
2634 unsigned int copylen
;
2635 struct net
*net
= sock_net(sk
);
2636 struct netns_ipvs
*ipvs
= net_ipvs(net
);
2639 BUILD_BUG_ON(sizeof(arg
) > 255);
2640 if (!ns_capable(sock_net(sk
)->user_ns
, CAP_NET_ADMIN
))
2643 if (cmd
< IP_VS_BASE_CTL
|| cmd
> IP_VS_SO_GET_MAX
)
2646 copylen
= get_arglen
[CMDID(cmd
)];
2647 if (*len
< (int) copylen
) {
2648 IP_VS_DBG(1, "get_ctl: len %d < %u\n", *len
, copylen
);
2652 if (copy_from_user(arg
, user
, copylen
) != 0)
2655 * Handle daemons first since it has its own locking
2657 if (cmd
== IP_VS_SO_GET_DAEMON
) {
2658 struct ip_vs_daemon_user d
[2];
2660 memset(&d
, 0, sizeof(d
));
2661 mutex_lock(&ipvs
->sync_mutex
);
2662 if (ipvs
->sync_state
& IP_VS_STATE_MASTER
) {
2663 d
[0].state
= IP_VS_STATE_MASTER
;
2664 strlcpy(d
[0].mcast_ifn
, ipvs
->mcfg
.mcast_ifn
,
2665 sizeof(d
[0].mcast_ifn
));
2666 d
[0].syncid
= ipvs
->mcfg
.syncid
;
2668 if (ipvs
->sync_state
& IP_VS_STATE_BACKUP
) {
2669 d
[1].state
= IP_VS_STATE_BACKUP
;
2670 strlcpy(d
[1].mcast_ifn
, ipvs
->bcfg
.mcast_ifn
,
2671 sizeof(d
[1].mcast_ifn
));
2672 d
[1].syncid
= ipvs
->bcfg
.syncid
;
2674 if (copy_to_user(user
, &d
, sizeof(d
)) != 0)
2676 mutex_unlock(&ipvs
->sync_mutex
);
2680 mutex_lock(&__ip_vs_mutex
);
2682 case IP_VS_SO_GET_VERSION
:
2686 sprintf(buf
, "IP Virtual Server version %d.%d.%d (size=%d)",
2687 NVERSION(IP_VS_VERSION_CODE
), ip_vs_conn_tab_size
);
2688 if (copy_to_user(user
, buf
, strlen(buf
)+1) != 0) {
2692 *len
= strlen(buf
)+1;
2696 case IP_VS_SO_GET_INFO
:
2698 struct ip_vs_getinfo info
;
2699 info
.version
= IP_VS_VERSION_CODE
;
2700 info
.size
= ip_vs_conn_tab_size
;
2701 info
.num_services
= ipvs
->num_services
;
2702 if (copy_to_user(user
, &info
, sizeof(info
)) != 0)
2707 case IP_VS_SO_GET_SERVICES
:
2709 struct ip_vs_get_services
*get
;
2712 get
= (struct ip_vs_get_services
*)arg
;
2713 size
= sizeof(*get
) +
2714 sizeof(struct ip_vs_service_entry
) * get
->num_services
;
2716 pr_err("length: %u != %u\n", *len
, size
);
2720 ret
= __ip_vs_get_service_entries(ipvs
, get
, user
);
2724 case IP_VS_SO_GET_SERVICE
:
2726 struct ip_vs_service_entry
*entry
;
2727 struct ip_vs_service
*svc
;
2728 union nf_inet_addr addr
;
2730 entry
= (struct ip_vs_service_entry
*)arg
;
2731 addr
.ip
= entry
->addr
;
2734 svc
= __ip_vs_svc_fwm_find(ipvs
, AF_INET
, entry
->fwmark
);
2736 svc
= __ip_vs_service_find(ipvs
, AF_INET
,
2737 entry
->protocol
, &addr
,
2741 ip_vs_copy_service(entry
, svc
);
2742 if (copy_to_user(user
, entry
, sizeof(*entry
)) != 0)
2749 case IP_VS_SO_GET_DESTS
:
2751 struct ip_vs_get_dests
*get
;
2754 get
= (struct ip_vs_get_dests
*)arg
;
2755 size
= sizeof(*get
) +
2756 sizeof(struct ip_vs_dest_entry
) * get
->num_dests
;
2758 pr_err("length: %u != %u\n", *len
, size
);
2762 ret
= __ip_vs_get_dest_entries(ipvs
, get
, user
);
2766 case IP_VS_SO_GET_TIMEOUT
:
2768 struct ip_vs_timeout_user t
;
2770 __ip_vs_get_timeouts(ipvs
, &t
);
2771 if (copy_to_user(user
, &t
, sizeof(t
)) != 0)
2781 mutex_unlock(&__ip_vs_mutex
);
2786 static struct nf_sockopt_ops ip_vs_sockopts
= {
2788 .set_optmin
= IP_VS_BASE_CTL
,
2789 .set_optmax
= IP_VS_SO_SET_MAX
+1,
2790 .set
= do_ip_vs_set_ctl
,
2791 .get_optmin
= IP_VS_BASE_CTL
,
2792 .get_optmax
= IP_VS_SO_GET_MAX
+1,
2793 .get
= do_ip_vs_get_ctl
,
2794 .owner
= THIS_MODULE
,
2798 * Generic Netlink interface
2801 /* IPVS genetlink family */
2802 static struct genl_family ip_vs_genl_family
= {
2803 .id
= GENL_ID_GENERATE
,
2805 .name
= IPVS_GENL_NAME
,
2806 .version
= IPVS_GENL_VERSION
,
2807 .maxattr
= IPVS_CMD_MAX
,
2808 .netnsok
= true, /* Make ipvsadm to work on netns */
2811 /* Policy used for first-level command attributes */
2812 static const struct nla_policy ip_vs_cmd_policy
[IPVS_CMD_ATTR_MAX
+ 1] = {
2813 [IPVS_CMD_ATTR_SERVICE
] = { .type
= NLA_NESTED
},
2814 [IPVS_CMD_ATTR_DEST
] = { .type
= NLA_NESTED
},
2815 [IPVS_CMD_ATTR_DAEMON
] = { .type
= NLA_NESTED
},
2816 [IPVS_CMD_ATTR_TIMEOUT_TCP
] = { .type
= NLA_U32
},
2817 [IPVS_CMD_ATTR_TIMEOUT_TCP_FIN
] = { .type
= NLA_U32
},
2818 [IPVS_CMD_ATTR_TIMEOUT_UDP
] = { .type
= NLA_U32
},
2821 /* Policy used for attributes in nested attribute IPVS_CMD_ATTR_DAEMON */
2822 static const struct nla_policy ip_vs_daemon_policy
[IPVS_DAEMON_ATTR_MAX
+ 1] = {
2823 [IPVS_DAEMON_ATTR_STATE
] = { .type
= NLA_U32
},
2824 [IPVS_DAEMON_ATTR_MCAST_IFN
] = { .type
= NLA_NUL_STRING
,
2825 .len
= IP_VS_IFNAME_MAXLEN
},
2826 [IPVS_DAEMON_ATTR_SYNC_ID
] = { .type
= NLA_U32
},
2827 [IPVS_DAEMON_ATTR_SYNC_MAXLEN
] = { .type
= NLA_U16
},
2828 [IPVS_DAEMON_ATTR_MCAST_GROUP
] = { .type
= NLA_U32
},
2829 [IPVS_DAEMON_ATTR_MCAST_GROUP6
] = { .len
= sizeof(struct in6_addr
) },
2830 [IPVS_DAEMON_ATTR_MCAST_PORT
] = { .type
= NLA_U16
},
2831 [IPVS_DAEMON_ATTR_MCAST_TTL
] = { .type
= NLA_U8
},
2834 /* Policy used for attributes in nested attribute IPVS_CMD_ATTR_SERVICE */
2835 static const struct nla_policy ip_vs_svc_policy
[IPVS_SVC_ATTR_MAX
+ 1] = {
2836 [IPVS_SVC_ATTR_AF
] = { .type
= NLA_U16
},
2837 [IPVS_SVC_ATTR_PROTOCOL
] = { .type
= NLA_U16
},
2838 [IPVS_SVC_ATTR_ADDR
] = { .type
= NLA_BINARY
,
2839 .len
= sizeof(union nf_inet_addr
) },
2840 [IPVS_SVC_ATTR_PORT
] = { .type
= NLA_U16
},
2841 [IPVS_SVC_ATTR_FWMARK
] = { .type
= NLA_U32
},
2842 [IPVS_SVC_ATTR_SCHED_NAME
] = { .type
= NLA_NUL_STRING
,
2843 .len
= IP_VS_SCHEDNAME_MAXLEN
},
2844 [IPVS_SVC_ATTR_PE_NAME
] = { .type
= NLA_NUL_STRING
,
2845 .len
= IP_VS_PENAME_MAXLEN
},
2846 [IPVS_SVC_ATTR_FLAGS
] = { .type
= NLA_BINARY
,
2847 .len
= sizeof(struct ip_vs_flags
) },
2848 [IPVS_SVC_ATTR_TIMEOUT
] = { .type
= NLA_U32
},
2849 [IPVS_SVC_ATTR_NETMASK
] = { .type
= NLA_U32
},
2850 [IPVS_SVC_ATTR_STATS
] = { .type
= NLA_NESTED
},
2853 /* Policy used for attributes in nested attribute IPVS_CMD_ATTR_DEST */
2854 static const struct nla_policy ip_vs_dest_policy
[IPVS_DEST_ATTR_MAX
+ 1] = {
2855 [IPVS_DEST_ATTR_ADDR
] = { .type
= NLA_BINARY
,
2856 .len
= sizeof(union nf_inet_addr
) },
2857 [IPVS_DEST_ATTR_PORT
] = { .type
= NLA_U16
},
2858 [IPVS_DEST_ATTR_FWD_METHOD
] = { .type
= NLA_U32
},
2859 [IPVS_DEST_ATTR_WEIGHT
] = { .type
= NLA_U32
},
2860 [IPVS_DEST_ATTR_U_THRESH
] = { .type
= NLA_U32
},
2861 [IPVS_DEST_ATTR_L_THRESH
] = { .type
= NLA_U32
},
2862 [IPVS_DEST_ATTR_ACTIVE_CONNS
] = { .type
= NLA_U32
},
2863 [IPVS_DEST_ATTR_INACT_CONNS
] = { .type
= NLA_U32
},
2864 [IPVS_DEST_ATTR_PERSIST_CONNS
] = { .type
= NLA_U32
},
2865 [IPVS_DEST_ATTR_STATS
] = { .type
= NLA_NESTED
},
2866 [IPVS_DEST_ATTR_ADDR_FAMILY
] = { .type
= NLA_U16
},
2869 static int ip_vs_genl_fill_stats(struct sk_buff
*skb
, int container_type
,
2870 struct ip_vs_kstats
*kstats
)
2872 struct nlattr
*nl_stats
= nla_nest_start(skb
, container_type
);
2877 if (nla_put_u32(skb
, IPVS_STATS_ATTR_CONNS
, (u32
)kstats
->conns
) ||
2878 nla_put_u32(skb
, IPVS_STATS_ATTR_INPKTS
, (u32
)kstats
->inpkts
) ||
2879 nla_put_u32(skb
, IPVS_STATS_ATTR_OUTPKTS
, (u32
)kstats
->outpkts
) ||
2880 nla_put_u64(skb
, IPVS_STATS_ATTR_INBYTES
, kstats
->inbytes
) ||
2881 nla_put_u64(skb
, IPVS_STATS_ATTR_OUTBYTES
, kstats
->outbytes
) ||
2882 nla_put_u32(skb
, IPVS_STATS_ATTR_CPS
, (u32
)kstats
->cps
) ||
2883 nla_put_u32(skb
, IPVS_STATS_ATTR_INPPS
, (u32
)kstats
->inpps
) ||
2884 nla_put_u32(skb
, IPVS_STATS_ATTR_OUTPPS
, (u32
)kstats
->outpps
) ||
2885 nla_put_u32(skb
, IPVS_STATS_ATTR_INBPS
, (u32
)kstats
->inbps
) ||
2886 nla_put_u32(skb
, IPVS_STATS_ATTR_OUTBPS
, (u32
)kstats
->outbps
))
2887 goto nla_put_failure
;
2888 nla_nest_end(skb
, nl_stats
);
2893 nla_nest_cancel(skb
, nl_stats
);
2897 static int ip_vs_genl_fill_stats64(struct sk_buff
*skb
, int container_type
,
2898 struct ip_vs_kstats
*kstats
)
2900 struct nlattr
*nl_stats
= nla_nest_start(skb
, container_type
);
2905 if (nla_put_u64(skb
, IPVS_STATS_ATTR_CONNS
, kstats
->conns
) ||
2906 nla_put_u64(skb
, IPVS_STATS_ATTR_INPKTS
, kstats
->inpkts
) ||
2907 nla_put_u64(skb
, IPVS_STATS_ATTR_OUTPKTS
, kstats
->outpkts
) ||
2908 nla_put_u64(skb
, IPVS_STATS_ATTR_INBYTES
, kstats
->inbytes
) ||
2909 nla_put_u64(skb
, IPVS_STATS_ATTR_OUTBYTES
, kstats
->outbytes
) ||
2910 nla_put_u64(skb
, IPVS_STATS_ATTR_CPS
, kstats
->cps
) ||
2911 nla_put_u64(skb
, IPVS_STATS_ATTR_INPPS
, kstats
->inpps
) ||
2912 nla_put_u64(skb
, IPVS_STATS_ATTR_OUTPPS
, kstats
->outpps
) ||
2913 nla_put_u64(skb
, IPVS_STATS_ATTR_INBPS
, kstats
->inbps
) ||
2914 nla_put_u64(skb
, IPVS_STATS_ATTR_OUTBPS
, kstats
->outbps
))
2915 goto nla_put_failure
;
2916 nla_nest_end(skb
, nl_stats
);
2921 nla_nest_cancel(skb
, nl_stats
);
2925 static int ip_vs_genl_fill_service(struct sk_buff
*skb
,
2926 struct ip_vs_service
*svc
)
2928 struct ip_vs_scheduler
*sched
;
2929 struct ip_vs_pe
*pe
;
2930 struct nlattr
*nl_service
;
2931 struct ip_vs_flags flags
= { .flags
= svc
->flags
,
2933 struct ip_vs_kstats kstats
;
2936 nl_service
= nla_nest_start(skb
, IPVS_CMD_ATTR_SERVICE
);
2940 if (nla_put_u16(skb
, IPVS_SVC_ATTR_AF
, svc
->af
))
2941 goto nla_put_failure
;
2943 if (nla_put_u32(skb
, IPVS_SVC_ATTR_FWMARK
, svc
->fwmark
))
2944 goto nla_put_failure
;
2946 if (nla_put_u16(skb
, IPVS_SVC_ATTR_PROTOCOL
, svc
->protocol
) ||
2947 nla_put(skb
, IPVS_SVC_ATTR_ADDR
, sizeof(svc
->addr
), &svc
->addr
) ||
2948 nla_put_be16(skb
, IPVS_SVC_ATTR_PORT
, svc
->port
))
2949 goto nla_put_failure
;
2952 sched
= rcu_dereference_protected(svc
->scheduler
, 1);
2953 sched_name
= sched
? sched
->name
: "none";
2954 pe
= rcu_dereference_protected(svc
->pe
, 1);
2955 if (nla_put_string(skb
, IPVS_SVC_ATTR_SCHED_NAME
, sched_name
) ||
2956 (pe
&& nla_put_string(skb
, IPVS_SVC_ATTR_PE_NAME
, pe
->name
)) ||
2957 nla_put(skb
, IPVS_SVC_ATTR_FLAGS
, sizeof(flags
), &flags
) ||
2958 nla_put_u32(skb
, IPVS_SVC_ATTR_TIMEOUT
, svc
->timeout
/ HZ
) ||
2959 nla_put_be32(skb
, IPVS_SVC_ATTR_NETMASK
, svc
->netmask
))
2960 goto nla_put_failure
;
2961 ip_vs_copy_stats(&kstats
, &svc
->stats
);
2962 if (ip_vs_genl_fill_stats(skb
, IPVS_SVC_ATTR_STATS
, &kstats
))
2963 goto nla_put_failure
;
2964 if (ip_vs_genl_fill_stats64(skb
, IPVS_SVC_ATTR_STATS64
, &kstats
))
2965 goto nla_put_failure
;
2967 nla_nest_end(skb
, nl_service
);
2972 nla_nest_cancel(skb
, nl_service
);
2976 static int ip_vs_genl_dump_service(struct sk_buff
*skb
,
2977 struct ip_vs_service
*svc
,
2978 struct netlink_callback
*cb
)
2982 hdr
= genlmsg_put(skb
, NETLINK_CB(cb
->skb
).portid
, cb
->nlh
->nlmsg_seq
,
2983 &ip_vs_genl_family
, NLM_F_MULTI
,
2984 IPVS_CMD_NEW_SERVICE
);
2988 if (ip_vs_genl_fill_service(skb
, svc
) < 0)
2989 goto nla_put_failure
;
2991 genlmsg_end(skb
, hdr
);
2995 genlmsg_cancel(skb
, hdr
);
2999 static int ip_vs_genl_dump_services(struct sk_buff
*skb
,
3000 struct netlink_callback
*cb
)
3003 int start
= cb
->args
[0];
3004 struct ip_vs_service
*svc
;
3005 struct netns_ipvs
*ipvs
= net_ipvs(skb_sknet(skb
));
3007 mutex_lock(&__ip_vs_mutex
);
3008 for (i
= 0; i
< IP_VS_SVC_TAB_SIZE
; i
++) {
3009 hlist_for_each_entry(svc
, &ip_vs_svc_table
[i
], s_list
) {
3010 if (++idx
<= start
|| (svc
->ipvs
!= ipvs
))
3012 if (ip_vs_genl_dump_service(skb
, svc
, cb
) < 0) {
3014 goto nla_put_failure
;
3019 for (i
= 0; i
< IP_VS_SVC_TAB_SIZE
; i
++) {
3020 hlist_for_each_entry(svc
, &ip_vs_svc_fwm_table
[i
], f_list
) {
3021 if (++idx
<= start
|| (svc
->ipvs
!= ipvs
))
3023 if (ip_vs_genl_dump_service(skb
, svc
, cb
) < 0) {
3025 goto nla_put_failure
;
3031 mutex_unlock(&__ip_vs_mutex
);
3037 static int ip_vs_genl_parse_service(struct netns_ipvs
*ipvs
,
3038 struct ip_vs_service_user_kern
*usvc
,
3039 struct nlattr
*nla
, int full_entry
,
3040 struct ip_vs_service
**ret_svc
)
3042 struct nlattr
*attrs
[IPVS_SVC_ATTR_MAX
+ 1];
3043 struct nlattr
*nla_af
, *nla_port
, *nla_fwmark
, *nla_protocol
, *nla_addr
;
3044 struct ip_vs_service
*svc
;
3046 /* Parse mandatory identifying service fields first */
3048 nla_parse_nested(attrs
, IPVS_SVC_ATTR_MAX
, nla
, ip_vs_svc_policy
))
3051 nla_af
= attrs
[IPVS_SVC_ATTR_AF
];
3052 nla_protocol
= attrs
[IPVS_SVC_ATTR_PROTOCOL
];
3053 nla_addr
= attrs
[IPVS_SVC_ATTR_ADDR
];
3054 nla_port
= attrs
[IPVS_SVC_ATTR_PORT
];
3055 nla_fwmark
= attrs
[IPVS_SVC_ATTR_FWMARK
];
3057 if (!(nla_af
&& (nla_fwmark
|| (nla_port
&& nla_protocol
&& nla_addr
))))
3060 memset(usvc
, 0, sizeof(*usvc
));
3062 usvc
->af
= nla_get_u16(nla_af
);
3063 #ifdef CONFIG_IP_VS_IPV6
3064 if (usvc
->af
!= AF_INET
&& usvc
->af
!= AF_INET6
)
3066 if (usvc
->af
!= AF_INET
)
3068 return -EAFNOSUPPORT
;
3071 usvc
->protocol
= IPPROTO_TCP
;
3072 usvc
->fwmark
= nla_get_u32(nla_fwmark
);
3074 usvc
->protocol
= nla_get_u16(nla_protocol
);
3075 nla_memcpy(&usvc
->addr
, nla_addr
, sizeof(usvc
->addr
));
3076 usvc
->port
= nla_get_be16(nla_port
);
3082 svc
= __ip_vs_svc_fwm_find(ipvs
, usvc
->af
, usvc
->fwmark
);
3084 svc
= __ip_vs_service_find(ipvs
, usvc
->af
, usvc
->protocol
,
3085 &usvc
->addr
, usvc
->port
);
3089 /* If a full entry was requested, check for the additional fields */
3091 struct nlattr
*nla_sched
, *nla_flags
, *nla_pe
, *nla_timeout
,
3093 struct ip_vs_flags flags
;
3095 nla_sched
= attrs
[IPVS_SVC_ATTR_SCHED_NAME
];
3096 nla_pe
= attrs
[IPVS_SVC_ATTR_PE_NAME
];
3097 nla_flags
= attrs
[IPVS_SVC_ATTR_FLAGS
];
3098 nla_timeout
= attrs
[IPVS_SVC_ATTR_TIMEOUT
];
3099 nla_netmask
= attrs
[IPVS_SVC_ATTR_NETMASK
];
3101 if (!(nla_sched
&& nla_flags
&& nla_timeout
&& nla_netmask
))
3104 nla_memcpy(&flags
, nla_flags
, sizeof(flags
));
3106 /* prefill flags from service if it already exists */
3108 usvc
->flags
= svc
->flags
;
3110 /* set new flags from userland */
3111 usvc
->flags
= (usvc
->flags
& ~flags
.mask
) |
3112 (flags
.flags
& flags
.mask
);
3113 usvc
->sched_name
= nla_data(nla_sched
);
3114 usvc
->pe_name
= nla_pe
? nla_data(nla_pe
) : NULL
;
3115 usvc
->timeout
= nla_get_u32(nla_timeout
);
3116 usvc
->netmask
= nla_get_be32(nla_netmask
);
3122 static struct ip_vs_service
*ip_vs_genl_find_service(struct netns_ipvs
*ipvs
,
3125 struct ip_vs_service_user_kern usvc
;
3126 struct ip_vs_service
*svc
;
3129 ret
= ip_vs_genl_parse_service(ipvs
, &usvc
, nla
, 0, &svc
);
3130 return ret
? ERR_PTR(ret
) : svc
;
3133 static int ip_vs_genl_fill_dest(struct sk_buff
*skb
, struct ip_vs_dest
*dest
)
3135 struct nlattr
*nl_dest
;
3136 struct ip_vs_kstats kstats
;
3138 nl_dest
= nla_nest_start(skb
, IPVS_CMD_ATTR_DEST
);
3142 if (nla_put(skb
, IPVS_DEST_ATTR_ADDR
, sizeof(dest
->addr
), &dest
->addr
) ||
3143 nla_put_be16(skb
, IPVS_DEST_ATTR_PORT
, dest
->port
) ||
3144 nla_put_u32(skb
, IPVS_DEST_ATTR_FWD_METHOD
,
3145 (atomic_read(&dest
->conn_flags
) &
3146 IP_VS_CONN_F_FWD_MASK
)) ||
3147 nla_put_u32(skb
, IPVS_DEST_ATTR_WEIGHT
,
3148 atomic_read(&dest
->weight
)) ||
3149 nla_put_u32(skb
, IPVS_DEST_ATTR_U_THRESH
, dest
->u_threshold
) ||
3150 nla_put_u32(skb
, IPVS_DEST_ATTR_L_THRESH
, dest
->l_threshold
) ||
3151 nla_put_u32(skb
, IPVS_DEST_ATTR_ACTIVE_CONNS
,
3152 atomic_read(&dest
->activeconns
)) ||
3153 nla_put_u32(skb
, IPVS_DEST_ATTR_INACT_CONNS
,
3154 atomic_read(&dest
->inactconns
)) ||
3155 nla_put_u32(skb
, IPVS_DEST_ATTR_PERSIST_CONNS
,
3156 atomic_read(&dest
->persistconns
)) ||
3157 nla_put_u16(skb
, IPVS_DEST_ATTR_ADDR_FAMILY
, dest
->af
))
3158 goto nla_put_failure
;
3159 ip_vs_copy_stats(&kstats
, &dest
->stats
);
3160 if (ip_vs_genl_fill_stats(skb
, IPVS_DEST_ATTR_STATS
, &kstats
))
3161 goto nla_put_failure
;
3162 if (ip_vs_genl_fill_stats64(skb
, IPVS_DEST_ATTR_STATS64
, &kstats
))
3163 goto nla_put_failure
;
3165 nla_nest_end(skb
, nl_dest
);
3170 nla_nest_cancel(skb
, nl_dest
);
3174 static int ip_vs_genl_dump_dest(struct sk_buff
*skb
, struct ip_vs_dest
*dest
,
3175 struct netlink_callback
*cb
)
3179 hdr
= genlmsg_put(skb
, NETLINK_CB(cb
->skb
).portid
, cb
->nlh
->nlmsg_seq
,
3180 &ip_vs_genl_family
, NLM_F_MULTI
,
3185 if (ip_vs_genl_fill_dest(skb
, dest
) < 0)
3186 goto nla_put_failure
;
3188 genlmsg_end(skb
, hdr
);
3192 genlmsg_cancel(skb
, hdr
);
3196 static int ip_vs_genl_dump_dests(struct sk_buff
*skb
,
3197 struct netlink_callback
*cb
)
3200 int start
= cb
->args
[0];
3201 struct ip_vs_service
*svc
;
3202 struct ip_vs_dest
*dest
;
3203 struct nlattr
*attrs
[IPVS_CMD_ATTR_MAX
+ 1];
3204 struct net
*net
= skb_sknet(skb
);
3205 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3207 mutex_lock(&__ip_vs_mutex
);
3209 /* Try to find the service for which to dump destinations */
3210 if (nlmsg_parse(cb
->nlh
, GENL_HDRLEN
, attrs
,
3211 IPVS_CMD_ATTR_MAX
, ip_vs_cmd_policy
))
3215 svc
= ip_vs_genl_find_service(ipvs
, attrs
[IPVS_CMD_ATTR_SERVICE
]);
3216 if (IS_ERR(svc
) || svc
== NULL
)
3219 /* Dump the destinations */
3220 list_for_each_entry(dest
, &svc
->destinations
, n_list
) {
3223 if (ip_vs_genl_dump_dest(skb
, dest
, cb
) < 0) {
3225 goto nla_put_failure
;
3233 mutex_unlock(&__ip_vs_mutex
);
3238 static int ip_vs_genl_parse_dest(struct ip_vs_dest_user_kern
*udest
,
3239 struct nlattr
*nla
, int full_entry
)
3241 struct nlattr
*attrs
[IPVS_DEST_ATTR_MAX
+ 1];
3242 struct nlattr
*nla_addr
, *nla_port
;
3243 struct nlattr
*nla_addr_family
;
3245 /* Parse mandatory identifying destination fields first */
3247 nla_parse_nested(attrs
, IPVS_DEST_ATTR_MAX
, nla
, ip_vs_dest_policy
))
3250 nla_addr
= attrs
[IPVS_DEST_ATTR_ADDR
];
3251 nla_port
= attrs
[IPVS_DEST_ATTR_PORT
];
3252 nla_addr_family
= attrs
[IPVS_DEST_ATTR_ADDR_FAMILY
];
3254 if (!(nla_addr
&& nla_port
))
3257 memset(udest
, 0, sizeof(*udest
));
3259 nla_memcpy(&udest
->addr
, nla_addr
, sizeof(udest
->addr
));
3260 udest
->port
= nla_get_be16(nla_port
);
3262 if (nla_addr_family
)
3263 udest
->af
= nla_get_u16(nla_addr_family
);
3267 /* If a full entry was requested, check for the additional fields */
3269 struct nlattr
*nla_fwd
, *nla_weight
, *nla_u_thresh
,
3272 nla_fwd
= attrs
[IPVS_DEST_ATTR_FWD_METHOD
];
3273 nla_weight
= attrs
[IPVS_DEST_ATTR_WEIGHT
];
3274 nla_u_thresh
= attrs
[IPVS_DEST_ATTR_U_THRESH
];
3275 nla_l_thresh
= attrs
[IPVS_DEST_ATTR_L_THRESH
];
3277 if (!(nla_fwd
&& nla_weight
&& nla_u_thresh
&& nla_l_thresh
))
3280 udest
->conn_flags
= nla_get_u32(nla_fwd
)
3281 & IP_VS_CONN_F_FWD_MASK
;
3282 udest
->weight
= nla_get_u32(nla_weight
);
3283 udest
->u_threshold
= nla_get_u32(nla_u_thresh
);
3284 udest
->l_threshold
= nla_get_u32(nla_l_thresh
);
3290 static int ip_vs_genl_fill_daemon(struct sk_buff
*skb
, __u32 state
,
3291 struct ipvs_sync_daemon_cfg
*c
)
3293 struct nlattr
*nl_daemon
;
3295 nl_daemon
= nla_nest_start(skb
, IPVS_CMD_ATTR_DAEMON
);
3299 if (nla_put_u32(skb
, IPVS_DAEMON_ATTR_STATE
, state
) ||
3300 nla_put_string(skb
, IPVS_DAEMON_ATTR_MCAST_IFN
, c
->mcast_ifn
) ||
3301 nla_put_u32(skb
, IPVS_DAEMON_ATTR_SYNC_ID
, c
->syncid
) ||
3302 nla_put_u16(skb
, IPVS_DAEMON_ATTR_SYNC_MAXLEN
, c
->sync_maxlen
) ||
3303 nla_put_u16(skb
, IPVS_DAEMON_ATTR_MCAST_PORT
, c
->mcast_port
) ||
3304 nla_put_u8(skb
, IPVS_DAEMON_ATTR_MCAST_TTL
, c
->mcast_ttl
))
3305 goto nla_put_failure
;
3306 #ifdef CONFIG_IP_VS_IPV6
3307 if (c
->mcast_af
== AF_INET6
) {
3308 if (nla_put_in6_addr(skb
, IPVS_DAEMON_ATTR_MCAST_GROUP6
,
3309 &c
->mcast_group
.in6
))
3310 goto nla_put_failure
;
3313 if (c
->mcast_af
== AF_INET
&&
3314 nla_put_in_addr(skb
, IPVS_DAEMON_ATTR_MCAST_GROUP
,
3316 goto nla_put_failure
;
3317 nla_nest_end(skb
, nl_daemon
);
3322 nla_nest_cancel(skb
, nl_daemon
);
3326 static int ip_vs_genl_dump_daemon(struct sk_buff
*skb
, __u32 state
,
3327 struct ipvs_sync_daemon_cfg
*c
,
3328 struct netlink_callback
*cb
)
3331 hdr
= genlmsg_put(skb
, NETLINK_CB(cb
->skb
).portid
, cb
->nlh
->nlmsg_seq
,
3332 &ip_vs_genl_family
, NLM_F_MULTI
,
3333 IPVS_CMD_NEW_DAEMON
);
3337 if (ip_vs_genl_fill_daemon(skb
, state
, c
))
3338 goto nla_put_failure
;
3340 genlmsg_end(skb
, hdr
);
3344 genlmsg_cancel(skb
, hdr
);
3348 static int ip_vs_genl_dump_daemons(struct sk_buff
*skb
,
3349 struct netlink_callback
*cb
)
3351 struct net
*net
= skb_sknet(skb
);
3352 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3354 mutex_lock(&ipvs
->sync_mutex
);
3355 if ((ipvs
->sync_state
& IP_VS_STATE_MASTER
) && !cb
->args
[0]) {
3356 if (ip_vs_genl_dump_daemon(skb
, IP_VS_STATE_MASTER
,
3357 &ipvs
->mcfg
, cb
) < 0)
3358 goto nla_put_failure
;
3363 if ((ipvs
->sync_state
& IP_VS_STATE_BACKUP
) && !cb
->args
[1]) {
3364 if (ip_vs_genl_dump_daemon(skb
, IP_VS_STATE_BACKUP
,
3365 &ipvs
->bcfg
, cb
) < 0)
3366 goto nla_put_failure
;
3372 mutex_unlock(&ipvs
->sync_mutex
);
3377 static int ip_vs_genl_new_daemon(struct netns_ipvs
*ipvs
, struct nlattr
**attrs
)
3379 struct ipvs_sync_daemon_cfg c
;
3383 memset(&c
, 0, sizeof(c
));
3384 if (!(attrs
[IPVS_DAEMON_ATTR_STATE
] &&
3385 attrs
[IPVS_DAEMON_ATTR_MCAST_IFN
] &&
3386 attrs
[IPVS_DAEMON_ATTR_SYNC_ID
]))
3388 strlcpy(c
.mcast_ifn
, nla_data(attrs
[IPVS_DAEMON_ATTR_MCAST_IFN
]),
3389 sizeof(c
.mcast_ifn
));
3390 c
.syncid
= nla_get_u32(attrs
[IPVS_DAEMON_ATTR_SYNC_ID
]);
3392 a
= attrs
[IPVS_DAEMON_ATTR_SYNC_MAXLEN
];
3394 c
.sync_maxlen
= nla_get_u16(a
);
3396 a
= attrs
[IPVS_DAEMON_ATTR_MCAST_GROUP
];
3398 c
.mcast_af
= AF_INET
;
3399 c
.mcast_group
.ip
= nla_get_in_addr(a
);
3400 if (!ipv4_is_multicast(c
.mcast_group
.ip
))
3403 a
= attrs
[IPVS_DAEMON_ATTR_MCAST_GROUP6
];
3405 #ifdef CONFIG_IP_VS_IPV6
3408 c
.mcast_af
= AF_INET6
;
3409 c
.mcast_group
.in6
= nla_get_in6_addr(a
);
3410 addr_type
= ipv6_addr_type(&c
.mcast_group
.in6
);
3411 if (!(addr_type
& IPV6_ADDR_MULTICAST
))
3414 return -EAFNOSUPPORT
;
3419 a
= attrs
[IPVS_DAEMON_ATTR_MCAST_PORT
];
3421 c
.mcast_port
= nla_get_u16(a
);
3423 a
= attrs
[IPVS_DAEMON_ATTR_MCAST_TTL
];
3425 c
.mcast_ttl
= nla_get_u8(a
);
3427 /* The synchronization protocol is incompatible with mixed family
3430 if (ipvs
->mixed_address_family_dests
> 0)
3434 mutex_lock(&ipvs
->sync_mutex
);
3435 ret
= start_sync_thread(ipvs
, &c
,
3436 nla_get_u32(attrs
[IPVS_DAEMON_ATTR_STATE
]));
3437 mutex_unlock(&ipvs
->sync_mutex
);
3442 static int ip_vs_genl_del_daemon(struct netns_ipvs
*ipvs
, struct nlattr
**attrs
)
3446 if (!attrs
[IPVS_DAEMON_ATTR_STATE
])
3449 mutex_lock(&ipvs
->sync_mutex
);
3450 ret
= stop_sync_thread(ipvs
->net
,
3451 nla_get_u32(attrs
[IPVS_DAEMON_ATTR_STATE
]));
3452 mutex_unlock(&ipvs
->sync_mutex
);
3456 static int ip_vs_genl_set_config(struct net
*net
, struct nlattr
**attrs
)
3458 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3459 struct ip_vs_timeout_user t
;
3461 __ip_vs_get_timeouts(ipvs
, &t
);
3463 if (attrs
[IPVS_CMD_ATTR_TIMEOUT_TCP
])
3464 t
.tcp_timeout
= nla_get_u32(attrs
[IPVS_CMD_ATTR_TIMEOUT_TCP
]);
3466 if (attrs
[IPVS_CMD_ATTR_TIMEOUT_TCP_FIN
])
3468 nla_get_u32(attrs
[IPVS_CMD_ATTR_TIMEOUT_TCP_FIN
]);
3470 if (attrs
[IPVS_CMD_ATTR_TIMEOUT_UDP
])
3471 t
.udp_timeout
= nla_get_u32(attrs
[IPVS_CMD_ATTR_TIMEOUT_UDP
]);
3473 return ip_vs_set_timeout(ipvs
, &t
);
3476 static int ip_vs_genl_set_daemon(struct sk_buff
*skb
, struct genl_info
*info
)
3478 int ret
= -EINVAL
, cmd
;
3480 struct netns_ipvs
*ipvs
;
3482 net
= skb_sknet(skb
);
3483 ipvs
= net_ipvs(net
);
3484 cmd
= info
->genlhdr
->cmd
;
3486 if (cmd
== IPVS_CMD_NEW_DAEMON
|| cmd
== IPVS_CMD_DEL_DAEMON
) {
3487 struct nlattr
*daemon_attrs
[IPVS_DAEMON_ATTR_MAX
+ 1];
3489 if (!info
->attrs
[IPVS_CMD_ATTR_DAEMON
] ||
3490 nla_parse_nested(daemon_attrs
, IPVS_DAEMON_ATTR_MAX
,
3491 info
->attrs
[IPVS_CMD_ATTR_DAEMON
],
3492 ip_vs_daemon_policy
))
3495 if (cmd
== IPVS_CMD_NEW_DAEMON
)
3496 ret
= ip_vs_genl_new_daemon(ipvs
, daemon_attrs
);
3498 ret
= ip_vs_genl_del_daemon(ipvs
, daemon_attrs
);
3505 static int ip_vs_genl_set_cmd(struct sk_buff
*skb
, struct genl_info
*info
)
3507 struct ip_vs_service
*svc
= NULL
;
3508 struct ip_vs_service_user_kern usvc
;
3509 struct ip_vs_dest_user_kern udest
;
3511 int need_full_svc
= 0, need_full_dest
= 0;
3513 struct netns_ipvs
*ipvs
;
3515 net
= skb_sknet(skb
);
3516 ipvs
= net_ipvs(net
);
3517 cmd
= info
->genlhdr
->cmd
;
3519 mutex_lock(&__ip_vs_mutex
);
3521 if (cmd
== IPVS_CMD_FLUSH
) {
3522 ret
= ip_vs_flush(ipvs
, false);
3524 } else if (cmd
== IPVS_CMD_SET_CONFIG
) {
3525 ret
= ip_vs_genl_set_config(net
, info
->attrs
);
3527 } else if (cmd
== IPVS_CMD_ZERO
&&
3528 !info
->attrs
[IPVS_CMD_ATTR_SERVICE
]) {
3529 ret
= ip_vs_zero_all(ipvs
);
3533 /* All following commands require a service argument, so check if we
3534 * received a valid one. We need a full service specification when
3535 * adding / editing a service. Only identifying members otherwise. */
3536 if (cmd
== IPVS_CMD_NEW_SERVICE
|| cmd
== IPVS_CMD_SET_SERVICE
)
3539 ret
= ip_vs_genl_parse_service(ipvs
, &usvc
,
3540 info
->attrs
[IPVS_CMD_ATTR_SERVICE
],
3541 need_full_svc
, &svc
);
3545 /* Unless we're adding a new service, the service must already exist */
3546 if ((cmd
!= IPVS_CMD_NEW_SERVICE
) && (svc
== NULL
)) {
3551 /* Destination commands require a valid destination argument. For
3552 * adding / editing a destination, we need a full destination
3554 if (cmd
== IPVS_CMD_NEW_DEST
|| cmd
== IPVS_CMD_SET_DEST
||
3555 cmd
== IPVS_CMD_DEL_DEST
) {
3556 if (cmd
!= IPVS_CMD_DEL_DEST
)
3559 ret
= ip_vs_genl_parse_dest(&udest
,
3560 info
->attrs
[IPVS_CMD_ATTR_DEST
],
3565 /* Old protocols did not allow the user to specify address
3566 * family, so we set it to zero instead. We also didn't
3567 * allow heterogeneous pools in the old code, so it's safe
3568 * to assume that this will have the same address family as
3574 if (udest
.af
!= svc
->af
&& cmd
!= IPVS_CMD_DEL_DEST
) {
3575 /* The synchronization protocol is incompatible
3576 * with mixed family services
3578 if (ipvs
->sync_state
) {
3583 /* Which connection types do we support? */
3584 switch (udest
.conn_flags
) {
3585 case IP_VS_CONN_F_TUNNEL
:
3586 /* We are able to forward this */
3596 case IPVS_CMD_NEW_SERVICE
:
3598 ret
= ip_vs_add_service(ipvs
, &usvc
, &svc
);
3602 case IPVS_CMD_SET_SERVICE
:
3603 ret
= ip_vs_edit_service(svc
, &usvc
);
3605 case IPVS_CMD_DEL_SERVICE
:
3606 ret
= ip_vs_del_service(svc
);
3607 /* do not use svc, it can be freed */
3609 case IPVS_CMD_NEW_DEST
:
3610 ret
= ip_vs_add_dest(svc
, &udest
);
3612 case IPVS_CMD_SET_DEST
:
3613 ret
= ip_vs_edit_dest(svc
, &udest
);
3615 case IPVS_CMD_DEL_DEST
:
3616 ret
= ip_vs_del_dest(svc
, &udest
);
3619 ret
= ip_vs_zero_service(svc
);
3626 mutex_unlock(&__ip_vs_mutex
);
3631 static int ip_vs_genl_get_cmd(struct sk_buff
*skb
, struct genl_info
*info
)
3633 struct sk_buff
*msg
;
3635 int ret
, cmd
, reply_cmd
;
3637 struct netns_ipvs
*ipvs
;
3639 net
= skb_sknet(skb
);
3640 ipvs
= net_ipvs(net
);
3641 cmd
= info
->genlhdr
->cmd
;
3643 if (cmd
== IPVS_CMD_GET_SERVICE
)
3644 reply_cmd
= IPVS_CMD_NEW_SERVICE
;
3645 else if (cmd
== IPVS_CMD_GET_INFO
)
3646 reply_cmd
= IPVS_CMD_SET_INFO
;
3647 else if (cmd
== IPVS_CMD_GET_CONFIG
)
3648 reply_cmd
= IPVS_CMD_SET_CONFIG
;
3650 pr_err("unknown Generic Netlink command\n");
3654 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_KERNEL
);
3658 mutex_lock(&__ip_vs_mutex
);
3660 reply
= genlmsg_put_reply(msg
, info
, &ip_vs_genl_family
, 0, reply_cmd
);
3662 goto nla_put_failure
;
3665 case IPVS_CMD_GET_SERVICE
:
3667 struct ip_vs_service
*svc
;
3669 svc
= ip_vs_genl_find_service(ipvs
,
3670 info
->attrs
[IPVS_CMD_ATTR_SERVICE
]);
3675 ret
= ip_vs_genl_fill_service(msg
, svc
);
3677 goto nla_put_failure
;
3686 case IPVS_CMD_GET_CONFIG
:
3688 struct ip_vs_timeout_user t
;
3690 __ip_vs_get_timeouts(ipvs
, &t
);
3691 #ifdef CONFIG_IP_VS_PROTO_TCP
3692 if (nla_put_u32(msg
, IPVS_CMD_ATTR_TIMEOUT_TCP
,
3694 nla_put_u32(msg
, IPVS_CMD_ATTR_TIMEOUT_TCP_FIN
,
3696 goto nla_put_failure
;
3698 #ifdef CONFIG_IP_VS_PROTO_UDP
3699 if (nla_put_u32(msg
, IPVS_CMD_ATTR_TIMEOUT_UDP
, t
.udp_timeout
))
3700 goto nla_put_failure
;
3706 case IPVS_CMD_GET_INFO
:
3707 if (nla_put_u32(msg
, IPVS_INFO_ATTR_VERSION
,
3708 IP_VS_VERSION_CODE
) ||
3709 nla_put_u32(msg
, IPVS_INFO_ATTR_CONN_TAB_SIZE
,
3710 ip_vs_conn_tab_size
))
3711 goto nla_put_failure
;
3715 genlmsg_end(msg
, reply
);
3716 ret
= genlmsg_reply(msg
, info
);
3720 pr_err("not enough space in Netlink message\n");
3726 mutex_unlock(&__ip_vs_mutex
);
3732 static const struct genl_ops ip_vs_genl_ops
[] = {
3734 .cmd
= IPVS_CMD_NEW_SERVICE
,
3735 .flags
= GENL_ADMIN_PERM
,
3736 .policy
= ip_vs_cmd_policy
,
3737 .doit
= ip_vs_genl_set_cmd
,
3740 .cmd
= IPVS_CMD_SET_SERVICE
,
3741 .flags
= GENL_ADMIN_PERM
,
3742 .policy
= ip_vs_cmd_policy
,
3743 .doit
= ip_vs_genl_set_cmd
,
3746 .cmd
= IPVS_CMD_DEL_SERVICE
,
3747 .flags
= GENL_ADMIN_PERM
,
3748 .policy
= ip_vs_cmd_policy
,
3749 .doit
= ip_vs_genl_set_cmd
,
3752 .cmd
= IPVS_CMD_GET_SERVICE
,
3753 .flags
= GENL_ADMIN_PERM
,
3754 .doit
= ip_vs_genl_get_cmd
,
3755 .dumpit
= ip_vs_genl_dump_services
,
3756 .policy
= ip_vs_cmd_policy
,
3759 .cmd
= IPVS_CMD_NEW_DEST
,
3760 .flags
= GENL_ADMIN_PERM
,
3761 .policy
= ip_vs_cmd_policy
,
3762 .doit
= ip_vs_genl_set_cmd
,
3765 .cmd
= IPVS_CMD_SET_DEST
,
3766 .flags
= GENL_ADMIN_PERM
,
3767 .policy
= ip_vs_cmd_policy
,
3768 .doit
= ip_vs_genl_set_cmd
,
3771 .cmd
= IPVS_CMD_DEL_DEST
,
3772 .flags
= GENL_ADMIN_PERM
,
3773 .policy
= ip_vs_cmd_policy
,
3774 .doit
= ip_vs_genl_set_cmd
,
3777 .cmd
= IPVS_CMD_GET_DEST
,
3778 .flags
= GENL_ADMIN_PERM
,
3779 .policy
= ip_vs_cmd_policy
,
3780 .dumpit
= ip_vs_genl_dump_dests
,
3783 .cmd
= IPVS_CMD_NEW_DAEMON
,
3784 .flags
= GENL_ADMIN_PERM
,
3785 .policy
= ip_vs_cmd_policy
,
3786 .doit
= ip_vs_genl_set_daemon
,
3789 .cmd
= IPVS_CMD_DEL_DAEMON
,
3790 .flags
= GENL_ADMIN_PERM
,
3791 .policy
= ip_vs_cmd_policy
,
3792 .doit
= ip_vs_genl_set_daemon
,
3795 .cmd
= IPVS_CMD_GET_DAEMON
,
3796 .flags
= GENL_ADMIN_PERM
,
3797 .dumpit
= ip_vs_genl_dump_daemons
,
3800 .cmd
= IPVS_CMD_SET_CONFIG
,
3801 .flags
= GENL_ADMIN_PERM
,
3802 .policy
= ip_vs_cmd_policy
,
3803 .doit
= ip_vs_genl_set_cmd
,
3806 .cmd
= IPVS_CMD_GET_CONFIG
,
3807 .flags
= GENL_ADMIN_PERM
,
3808 .doit
= ip_vs_genl_get_cmd
,
3811 .cmd
= IPVS_CMD_GET_INFO
,
3812 .flags
= GENL_ADMIN_PERM
,
3813 .doit
= ip_vs_genl_get_cmd
,
3816 .cmd
= IPVS_CMD_ZERO
,
3817 .flags
= GENL_ADMIN_PERM
,
3818 .policy
= ip_vs_cmd_policy
,
3819 .doit
= ip_vs_genl_set_cmd
,
3822 .cmd
= IPVS_CMD_FLUSH
,
3823 .flags
= GENL_ADMIN_PERM
,
3824 .doit
= ip_vs_genl_set_cmd
,
3828 static int __init
ip_vs_genl_register(void)
3830 return genl_register_family_with_ops(&ip_vs_genl_family
,
3834 static void ip_vs_genl_unregister(void)
3836 genl_unregister_family(&ip_vs_genl_family
);
3839 /* End of Generic Netlink interface definitions */
3842 * per netns intit/exit func.
3844 #ifdef CONFIG_SYSCTL
3845 static int __net_init
ip_vs_control_net_init_sysctl(struct net
*net
)
3848 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3849 struct ctl_table
*tbl
;
3851 atomic_set(&ipvs
->dropentry
, 0);
3852 spin_lock_init(&ipvs
->dropentry_lock
);
3853 spin_lock_init(&ipvs
->droppacket_lock
);
3854 spin_lock_init(&ipvs
->securetcp_lock
);
3856 if (!net_eq(net
, &init_net
)) {
3857 tbl
= kmemdup(vs_vars
, sizeof(vs_vars
), GFP_KERNEL
);
3861 /* Don't export sysctls to unprivileged users */
3862 if (net
->user_ns
!= &init_user_ns
)
3863 tbl
[0].procname
= NULL
;
3866 /* Initialize sysctl defaults */
3867 for (idx
= 0; idx
< ARRAY_SIZE(vs_vars
); idx
++) {
3868 if (tbl
[idx
].proc_handler
== proc_do_defense_mode
)
3869 tbl
[idx
].extra2
= ipvs
;
3872 ipvs
->sysctl_amemthresh
= 1024;
3873 tbl
[idx
++].data
= &ipvs
->sysctl_amemthresh
;
3874 ipvs
->sysctl_am_droprate
= 10;
3875 tbl
[idx
++].data
= &ipvs
->sysctl_am_droprate
;
3876 tbl
[idx
++].data
= &ipvs
->sysctl_drop_entry
;
3877 tbl
[idx
++].data
= &ipvs
->sysctl_drop_packet
;
3878 #ifdef CONFIG_IP_VS_NFCT
3879 tbl
[idx
++].data
= &ipvs
->sysctl_conntrack
;
3881 tbl
[idx
++].data
= &ipvs
->sysctl_secure_tcp
;
3882 ipvs
->sysctl_snat_reroute
= 1;
3883 tbl
[idx
++].data
= &ipvs
->sysctl_snat_reroute
;
3884 ipvs
->sysctl_sync_ver
= 1;
3885 tbl
[idx
++].data
= &ipvs
->sysctl_sync_ver
;
3886 ipvs
->sysctl_sync_ports
= 1;
3887 tbl
[idx
++].data
= &ipvs
->sysctl_sync_ports
;
3888 tbl
[idx
++].data
= &ipvs
->sysctl_sync_persist_mode
;
3889 ipvs
->sysctl_sync_qlen_max
= nr_free_buffer_pages() / 32;
3890 tbl
[idx
++].data
= &ipvs
->sysctl_sync_qlen_max
;
3891 ipvs
->sysctl_sync_sock_size
= 0;
3892 tbl
[idx
++].data
= &ipvs
->sysctl_sync_sock_size
;
3893 tbl
[idx
++].data
= &ipvs
->sysctl_cache_bypass
;
3894 tbl
[idx
++].data
= &ipvs
->sysctl_expire_nodest_conn
;
3895 tbl
[idx
++].data
= &ipvs
->sysctl_sloppy_tcp
;
3896 tbl
[idx
++].data
= &ipvs
->sysctl_sloppy_sctp
;
3897 tbl
[idx
++].data
= &ipvs
->sysctl_expire_quiescent_template
;
3898 ipvs
->sysctl_sync_threshold
[0] = DEFAULT_SYNC_THRESHOLD
;
3899 ipvs
->sysctl_sync_threshold
[1] = DEFAULT_SYNC_PERIOD
;
3900 tbl
[idx
].data
= &ipvs
->sysctl_sync_threshold
;
3901 tbl
[idx
++].maxlen
= sizeof(ipvs
->sysctl_sync_threshold
);
3902 ipvs
->sysctl_sync_refresh_period
= DEFAULT_SYNC_REFRESH_PERIOD
;
3903 tbl
[idx
++].data
= &ipvs
->sysctl_sync_refresh_period
;
3904 ipvs
->sysctl_sync_retries
= clamp_t(int, DEFAULT_SYNC_RETRIES
, 0, 3);
3905 tbl
[idx
++].data
= &ipvs
->sysctl_sync_retries
;
3906 tbl
[idx
++].data
= &ipvs
->sysctl_nat_icmp_send
;
3907 ipvs
->sysctl_pmtu_disc
= 1;
3908 tbl
[idx
++].data
= &ipvs
->sysctl_pmtu_disc
;
3909 tbl
[idx
++].data
= &ipvs
->sysctl_backup_only
;
3910 ipvs
->sysctl_conn_reuse_mode
= 1;
3911 tbl
[idx
++].data
= &ipvs
->sysctl_conn_reuse_mode
;
3912 tbl
[idx
++].data
= &ipvs
->sysctl_schedule_icmp
;
3913 tbl
[idx
++].data
= &ipvs
->sysctl_ignore_tunneled
;
3915 ipvs
->sysctl_hdr
= register_net_sysctl(net
, "net/ipv4/vs", tbl
);
3916 if (ipvs
->sysctl_hdr
== NULL
) {
3917 if (!net_eq(net
, &init_net
))
3921 ip_vs_start_estimator(net
, &ipvs
->tot_stats
);
3922 ipvs
->sysctl_tbl
= tbl
;
3923 /* Schedule defense work */
3924 INIT_DELAYED_WORK(&ipvs
->defense_work
, defense_work_handler
);
3925 schedule_delayed_work(&ipvs
->defense_work
, DEFENSE_TIMER_PERIOD
);
3930 static void __net_exit
ip_vs_control_net_cleanup_sysctl(struct net
*net
)
3932 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3934 cancel_delayed_work_sync(&ipvs
->defense_work
);
3935 cancel_work_sync(&ipvs
->defense_work
.work
);
3936 unregister_net_sysctl_table(ipvs
->sysctl_hdr
);
3937 ip_vs_stop_estimator(net
, &ipvs
->tot_stats
);
3939 if (!net_eq(net
, &init_net
))
3940 kfree(ipvs
->sysctl_tbl
);
3945 static int __net_init
ip_vs_control_net_init_sysctl(struct net
*net
) { return 0; }
3946 static void __net_exit
ip_vs_control_net_cleanup_sysctl(struct net
*net
) { }
3950 static struct notifier_block ip_vs_dst_notifier
= {
3951 .notifier_call
= ip_vs_dst_event
,
3954 int __net_init
ip_vs_control_net_init(struct net
*net
)
3957 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3959 /* Initialize rs_table */
3960 for (idx
= 0; idx
< IP_VS_RTAB_SIZE
; idx
++)
3961 INIT_HLIST_HEAD(&ipvs
->rs_table
[idx
]);
3963 INIT_LIST_HEAD(&ipvs
->dest_trash
);
3964 spin_lock_init(&ipvs
->dest_trash_lock
);
3965 setup_timer(&ipvs
->dest_trash_timer
, ip_vs_dest_trash_expire
,
3966 (unsigned long) ipvs
);
3967 atomic_set(&ipvs
->ftpsvc_counter
, 0);
3968 atomic_set(&ipvs
->nullsvc_counter
, 0);
3971 ipvs
->tot_stats
.cpustats
= alloc_percpu(struct ip_vs_cpu_stats
);
3972 if (!ipvs
->tot_stats
.cpustats
)
3975 for_each_possible_cpu(i
) {
3976 struct ip_vs_cpu_stats
*ipvs_tot_stats
;
3977 ipvs_tot_stats
= per_cpu_ptr(ipvs
->tot_stats
.cpustats
, i
);
3978 u64_stats_init(&ipvs_tot_stats
->syncp
);
3981 spin_lock_init(&ipvs
->tot_stats
.lock
);
3983 proc_create("ip_vs", 0, net
->proc_net
, &ip_vs_info_fops
);
3984 proc_create("ip_vs_stats", 0, net
->proc_net
, &ip_vs_stats_fops
);
3985 proc_create("ip_vs_stats_percpu", 0, net
->proc_net
,
3986 &ip_vs_stats_percpu_fops
);
3988 if (ip_vs_control_net_init_sysctl(net
))
3994 free_percpu(ipvs
->tot_stats
.cpustats
);
3998 void __net_exit
ip_vs_control_net_cleanup(struct net
*net
)
4000 struct netns_ipvs
*ipvs
= net_ipvs(net
);
4002 ip_vs_trash_cleanup(ipvs
);
4003 ip_vs_control_net_cleanup_sysctl(net
);
4004 remove_proc_entry("ip_vs_stats_percpu", net
->proc_net
);
4005 remove_proc_entry("ip_vs_stats", net
->proc_net
);
4006 remove_proc_entry("ip_vs", net
->proc_net
);
4007 free_percpu(ipvs
->tot_stats
.cpustats
);
4010 int __init
ip_vs_register_nl_ioctl(void)
4014 ret
= nf_register_sockopt(&ip_vs_sockopts
);
4016 pr_err("cannot register sockopt.\n");
4020 ret
= ip_vs_genl_register();
4022 pr_err("cannot register Generic Netlink interface.\n");
4028 nf_unregister_sockopt(&ip_vs_sockopts
);
4033 void ip_vs_unregister_nl_ioctl(void)
4035 ip_vs_genl_unregister();
4036 nf_unregister_sockopt(&ip_vs_sockopts
);
4039 int __init
ip_vs_control_init(void)
4046 /* Initialize svc_table, ip_vs_svc_fwm_table */
4047 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
4048 INIT_HLIST_HEAD(&ip_vs_svc_table
[idx
]);
4049 INIT_HLIST_HEAD(&ip_vs_svc_fwm_table
[idx
]);
4052 smp_wmb(); /* Do we really need it now ? */
4054 ret
= register_netdevice_notifier(&ip_vs_dst_notifier
);
4063 void ip_vs_control_cleanup(void)
4066 unregister_netdevice_notifier(&ip_vs_dst_notifier
);