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 /* lock for service table */
59 static DEFINE_RWLOCK(__ip_vs_svc_lock
);
61 /* sysctl variables */
63 #ifdef CONFIG_IP_VS_DEBUG
64 static int sysctl_ip_vs_debug_level
= 0;
66 int ip_vs_get_debug_level(void)
68 return sysctl_ip_vs_debug_level
;
74 static void __ip_vs_del_service(struct ip_vs_service
*svc
);
77 #ifdef CONFIG_IP_VS_IPV6
78 /* Taken from rt6_fill_node() in net/ipv6/route.c, is there a better way? */
79 static int __ip_vs_addr_is_local_v6(struct net
*net
,
80 const struct in6_addr
*addr
)
87 rt
= (struct rt6_info
*)ip6_route_output(net
, NULL
, &fl6
);
88 if (rt
&& rt
->dst
.dev
&& (rt
->dst
.dev
->flags
& IFF_LOOPBACK
))
97 * update_defense_level is called from keventd and from sysctl,
98 * so it needs to protect itself from softirqs
100 static void update_defense_level(struct netns_ipvs
*ipvs
)
103 static int old_secure_tcp
= 0;
108 /* we only count free and buffered memory (in pages) */
110 availmem
= i
.freeram
+ i
.bufferram
;
111 /* however in linux 2.5 the i.bufferram is total page cache size,
113 /* si_swapinfo(&i); */
114 /* availmem = availmem - (i.totalswap - i.freeswap); */
116 nomem
= (availmem
< ipvs
->sysctl_amemthresh
);
121 spin_lock(&ipvs
->dropentry_lock
);
122 switch (ipvs
->sysctl_drop_entry
) {
124 atomic_set(&ipvs
->dropentry
, 0);
128 atomic_set(&ipvs
->dropentry
, 1);
129 ipvs
->sysctl_drop_entry
= 2;
131 atomic_set(&ipvs
->dropentry
, 0);
136 atomic_set(&ipvs
->dropentry
, 1);
138 atomic_set(&ipvs
->dropentry
, 0);
139 ipvs
->sysctl_drop_entry
= 1;
143 atomic_set(&ipvs
->dropentry
, 1);
146 spin_unlock(&ipvs
->dropentry_lock
);
149 spin_lock(&ipvs
->droppacket_lock
);
150 switch (ipvs
->sysctl_drop_packet
) {
156 ipvs
->drop_rate
= ipvs
->drop_counter
157 = ipvs
->sysctl_amemthresh
/
158 (ipvs
->sysctl_amemthresh
-availmem
);
159 ipvs
->sysctl_drop_packet
= 2;
166 ipvs
->drop_rate
= ipvs
->drop_counter
167 = ipvs
->sysctl_amemthresh
/
168 (ipvs
->sysctl_amemthresh
-availmem
);
171 ipvs
->sysctl_drop_packet
= 1;
175 ipvs
->drop_rate
= ipvs
->sysctl_am_droprate
;
178 spin_unlock(&ipvs
->droppacket_lock
);
181 spin_lock(&ipvs
->securetcp_lock
);
182 switch (ipvs
->sysctl_secure_tcp
) {
184 if (old_secure_tcp
>= 2)
189 if (old_secure_tcp
< 2)
191 ipvs
->sysctl_secure_tcp
= 2;
193 if (old_secure_tcp
>= 2)
199 if (old_secure_tcp
< 2)
202 if (old_secure_tcp
>= 2)
204 ipvs
->sysctl_secure_tcp
= 1;
208 if (old_secure_tcp
< 2)
212 old_secure_tcp
= ipvs
->sysctl_secure_tcp
;
214 ip_vs_protocol_timeout_change(ipvs
,
215 ipvs
->sysctl_secure_tcp
> 1);
216 spin_unlock(&ipvs
->securetcp_lock
);
223 * Timer for checking the defense
225 #define DEFENSE_TIMER_PERIOD 1*HZ
227 static void defense_work_handler(struct work_struct
*work
)
229 struct netns_ipvs
*ipvs
=
230 container_of(work
, struct netns_ipvs
, defense_work
.work
);
232 update_defense_level(ipvs
);
233 if (atomic_read(&ipvs
->dropentry
))
234 ip_vs_random_dropentry(ipvs
->net
);
235 schedule_delayed_work(&ipvs
->defense_work
, DEFENSE_TIMER_PERIOD
);
240 ip_vs_use_count_inc(void)
242 return try_module_get(THIS_MODULE
);
246 ip_vs_use_count_dec(void)
248 module_put(THIS_MODULE
);
253 * Hash table: for virtual service lookups
255 #define IP_VS_SVC_TAB_BITS 8
256 #define IP_VS_SVC_TAB_SIZE (1 << IP_VS_SVC_TAB_BITS)
257 #define IP_VS_SVC_TAB_MASK (IP_VS_SVC_TAB_SIZE - 1)
259 /* the service table hashed by <protocol, addr, port> */
260 static struct list_head ip_vs_svc_table
[IP_VS_SVC_TAB_SIZE
];
261 /* the service table hashed by fwmark */
262 static struct list_head ip_vs_svc_fwm_table
[IP_VS_SVC_TAB_SIZE
];
266 * Returns hash value for virtual service
268 static inline unsigned int
269 ip_vs_svc_hashkey(struct net
*net
, int af
, unsigned int proto
,
270 const union nf_inet_addr
*addr
, __be16 port
)
272 register unsigned int porth
= ntohs(port
);
273 __be32 addr_fold
= addr
->ip
;
275 #ifdef CONFIG_IP_VS_IPV6
277 addr_fold
= addr
->ip6
[0]^addr
->ip6
[1]^
278 addr
->ip6
[2]^addr
->ip6
[3];
280 addr_fold
^= ((size_t)net
>>8);
282 return (proto
^ntohl(addr_fold
)^(porth
>>IP_VS_SVC_TAB_BITS
)^porth
)
283 & IP_VS_SVC_TAB_MASK
;
287 * Returns hash value of fwmark for virtual service lookup
289 static inline unsigned int ip_vs_svc_fwm_hashkey(struct net
*net
, __u32 fwmark
)
291 return (((size_t)net
>>8) ^ fwmark
) & IP_VS_SVC_TAB_MASK
;
295 * Hashes a service in the ip_vs_svc_table by <netns,proto,addr,port>
296 * or in the ip_vs_svc_fwm_table by fwmark.
297 * Should be called with locked tables.
299 static int ip_vs_svc_hash(struct ip_vs_service
*svc
)
303 if (svc
->flags
& IP_VS_SVC_F_HASHED
) {
304 pr_err("%s(): request for already hashed, called from %pF\n",
305 __func__
, __builtin_return_address(0));
309 if (svc
->fwmark
== 0) {
311 * Hash it by <netns,protocol,addr,port> in ip_vs_svc_table
313 hash
= ip_vs_svc_hashkey(svc
->net
, svc
->af
, svc
->protocol
,
314 &svc
->addr
, svc
->port
);
315 list_add(&svc
->s_list
, &ip_vs_svc_table
[hash
]);
318 * Hash it by fwmark in svc_fwm_table
320 hash
= ip_vs_svc_fwm_hashkey(svc
->net
, svc
->fwmark
);
321 list_add(&svc
->f_list
, &ip_vs_svc_fwm_table
[hash
]);
324 svc
->flags
|= IP_VS_SVC_F_HASHED
;
325 /* increase its refcnt because it is referenced by the svc table */
326 atomic_inc(&svc
->refcnt
);
332 * Unhashes a service from svc_table / svc_fwm_table.
333 * Should be called with locked tables.
335 static int ip_vs_svc_unhash(struct ip_vs_service
*svc
)
337 if (!(svc
->flags
& IP_VS_SVC_F_HASHED
)) {
338 pr_err("%s(): request for unhash flagged, called from %pF\n",
339 __func__
, __builtin_return_address(0));
343 if (svc
->fwmark
== 0) {
344 /* Remove it from the svc_table table */
345 list_del(&svc
->s_list
);
347 /* Remove it from the svc_fwm_table table */
348 list_del(&svc
->f_list
);
351 svc
->flags
&= ~IP_VS_SVC_F_HASHED
;
352 atomic_dec(&svc
->refcnt
);
358 * Get service by {netns, proto,addr,port} in the service table.
360 static inline struct ip_vs_service
*
361 __ip_vs_service_find(struct net
*net
, int af
, __u16 protocol
,
362 const union nf_inet_addr
*vaddr
, __be16 vport
)
365 struct ip_vs_service
*svc
;
367 /* Check for "full" addressed entries */
368 hash
= ip_vs_svc_hashkey(net
, af
, protocol
, vaddr
, vport
);
370 list_for_each_entry(svc
, &ip_vs_svc_table
[hash
], s_list
){
372 && ip_vs_addr_equal(af
, &svc
->addr
, vaddr
)
373 && (svc
->port
== vport
)
374 && (svc
->protocol
== protocol
)
375 && net_eq(svc
->net
, net
)) {
386 * Get service by {fwmark} in the service table.
388 static inline struct ip_vs_service
*
389 __ip_vs_svc_fwm_find(struct net
*net
, int af
, __u32 fwmark
)
392 struct ip_vs_service
*svc
;
394 /* Check for fwmark addressed entries */
395 hash
= ip_vs_svc_fwm_hashkey(net
, fwmark
);
397 list_for_each_entry(svc
, &ip_vs_svc_fwm_table
[hash
], f_list
) {
398 if (svc
->fwmark
== fwmark
&& svc
->af
== af
399 && net_eq(svc
->net
, net
)) {
408 struct ip_vs_service
*
409 ip_vs_service_get(struct net
*net
, int af
, __u32 fwmark
, __u16 protocol
,
410 const union nf_inet_addr
*vaddr
, __be16 vport
)
412 struct ip_vs_service
*svc
;
413 struct netns_ipvs
*ipvs
= net_ipvs(net
);
415 read_lock(&__ip_vs_svc_lock
);
418 * Check the table hashed by fwmark first
421 svc
= __ip_vs_svc_fwm_find(net
, af
, fwmark
);
427 * Check the table hashed by <protocol,addr,port>
428 * for "full" addressed entries
430 svc
= __ip_vs_service_find(net
, af
, protocol
, vaddr
, vport
);
433 && protocol
== IPPROTO_TCP
434 && atomic_read(&ipvs
->ftpsvc_counter
)
435 && (vport
== FTPDATA
|| ntohs(vport
) >= PROT_SOCK
)) {
437 * Check if ftp service entry exists, the packet
438 * might belong to FTP data connections.
440 svc
= __ip_vs_service_find(net
, af
, protocol
, vaddr
, FTPPORT
);
444 && atomic_read(&ipvs
->nullsvc_counter
)) {
446 * Check if the catch-all port (port zero) exists
448 svc
= __ip_vs_service_find(net
, af
, protocol
, vaddr
, 0);
453 atomic_inc(&svc
->usecnt
);
454 read_unlock(&__ip_vs_svc_lock
);
456 IP_VS_DBG_BUF(9, "lookup service: fwm %u %s %s:%u %s\n",
457 fwmark
, ip_vs_proto_name(protocol
),
458 IP_VS_DBG_ADDR(af
, vaddr
), ntohs(vport
),
459 svc
? "hit" : "not hit");
466 __ip_vs_bind_svc(struct ip_vs_dest
*dest
, struct ip_vs_service
*svc
)
468 atomic_inc(&svc
->refcnt
);
473 __ip_vs_unbind_svc(struct ip_vs_dest
*dest
)
475 struct ip_vs_service
*svc
= dest
->svc
;
478 if (atomic_dec_and_test(&svc
->refcnt
)) {
479 IP_VS_DBG_BUF(3, "Removing service %u/%s:%u usecnt=%d\n",
481 IP_VS_DBG_ADDR(svc
->af
, &svc
->addr
),
482 ntohs(svc
->port
), atomic_read(&svc
->usecnt
));
483 free_percpu(svc
->stats
.cpustats
);
490 * Returns hash value for real service
492 static inline unsigned int ip_vs_rs_hashkey(int af
,
493 const union nf_inet_addr
*addr
,
496 register unsigned int porth
= ntohs(port
);
497 __be32 addr_fold
= addr
->ip
;
499 #ifdef CONFIG_IP_VS_IPV6
501 addr_fold
= addr
->ip6
[0]^addr
->ip6
[1]^
502 addr
->ip6
[2]^addr
->ip6
[3];
505 return (ntohl(addr_fold
)^(porth
>>IP_VS_RTAB_BITS
)^porth
)
510 * Hashes ip_vs_dest in rs_table by <proto,addr,port>.
511 * should be called with locked tables.
513 static int ip_vs_rs_hash(struct netns_ipvs
*ipvs
, struct ip_vs_dest
*dest
)
517 if (!list_empty(&dest
->d_list
)) {
522 * Hash by proto,addr,port,
523 * which are the parameters of the real service.
525 hash
= ip_vs_rs_hashkey(dest
->af
, &dest
->addr
, dest
->port
);
527 list_add(&dest
->d_list
, &ipvs
->rs_table
[hash
]);
533 * UNhashes ip_vs_dest from rs_table.
534 * should be called with locked tables.
536 static int ip_vs_rs_unhash(struct ip_vs_dest
*dest
)
539 * Remove it from the rs_table table.
541 if (!list_empty(&dest
->d_list
)) {
542 list_del(&dest
->d_list
);
543 INIT_LIST_HEAD(&dest
->d_list
);
550 * Lookup real service by <proto,addr,port> in the real service table.
553 ip_vs_lookup_real_service(struct net
*net
, int af
, __u16 protocol
,
554 const union nf_inet_addr
*daddr
,
557 struct netns_ipvs
*ipvs
= net_ipvs(net
);
559 struct ip_vs_dest
*dest
;
562 * Check for "full" addressed entries
563 * Return the first found entry
565 hash
= ip_vs_rs_hashkey(af
, daddr
, dport
);
567 read_lock(&ipvs
->rs_lock
);
568 list_for_each_entry(dest
, &ipvs
->rs_table
[hash
], d_list
) {
570 && ip_vs_addr_equal(af
, &dest
->addr
, daddr
)
571 && (dest
->port
== dport
)
572 && ((dest
->protocol
== protocol
) ||
575 read_unlock(&ipvs
->rs_lock
);
579 read_unlock(&ipvs
->rs_lock
);
585 * Lookup destination by {addr,port} in the given service
587 static struct ip_vs_dest
*
588 ip_vs_lookup_dest(struct ip_vs_service
*svc
, const union nf_inet_addr
*daddr
,
591 struct ip_vs_dest
*dest
;
594 * Find the destination for the given service
596 list_for_each_entry(dest
, &svc
->destinations
, n_list
) {
597 if ((dest
->af
== svc
->af
)
598 && ip_vs_addr_equal(svc
->af
, &dest
->addr
, daddr
)
599 && (dest
->port
== dport
)) {
609 * Find destination by {daddr,dport,vaddr,protocol}
610 * Cretaed to be used in ip_vs_process_message() in
611 * the backup synchronization daemon. It finds the
612 * destination to be bound to the received connection
615 * ip_vs_lookup_real_service() looked promissing, but
616 * seems not working as expected.
618 struct ip_vs_dest
*ip_vs_find_dest(struct net
*net
, int af
,
619 const union nf_inet_addr
*daddr
,
621 const union nf_inet_addr
*vaddr
,
622 __be16 vport
, __u16 protocol
, __u32 fwmark
,
625 struct ip_vs_dest
*dest
;
626 struct ip_vs_service
*svc
;
629 svc
= ip_vs_service_get(net
, af
, fwmark
, protocol
, vaddr
, vport
);
632 if (fwmark
&& (flags
& IP_VS_CONN_F_FWD_MASK
) != IP_VS_CONN_F_MASQ
)
634 dest
= ip_vs_lookup_dest(svc
, daddr
, port
);
636 dest
= ip_vs_lookup_dest(svc
, daddr
, port
^ dport
);
638 atomic_inc(&dest
->refcnt
);
639 ip_vs_service_put(svc
);
644 * Lookup dest by {svc,addr,port} in the destination trash.
645 * The destination trash is used to hold the destinations that are removed
646 * from the service table but are still referenced by some conn entries.
647 * The reason to add the destination trash is when the dest is temporary
648 * down (either by administrator or by monitor program), the dest can be
649 * picked back from the trash, the remaining connections to the dest can
650 * continue, and the counting information of the dest is also useful for
653 static struct ip_vs_dest
*
654 ip_vs_trash_get_dest(struct ip_vs_service
*svc
, const union nf_inet_addr
*daddr
,
657 struct ip_vs_dest
*dest
, *nxt
;
658 struct netns_ipvs
*ipvs
= net_ipvs(svc
->net
);
661 * Find the destination in trash
663 list_for_each_entry_safe(dest
, nxt
, &ipvs
->dest_trash
, n_list
) {
664 IP_VS_DBG_BUF(3, "Destination %u/%s:%u still in trash, "
667 IP_VS_DBG_ADDR(svc
->af
, &dest
->addr
),
669 atomic_read(&dest
->refcnt
));
670 if (dest
->af
== svc
->af
&&
671 ip_vs_addr_equal(svc
->af
, &dest
->addr
, daddr
) &&
672 dest
->port
== dport
&&
673 dest
->vfwmark
== svc
->fwmark
&&
674 dest
->protocol
== svc
->protocol
&&
676 (ip_vs_addr_equal(svc
->af
, &dest
->vaddr
, &svc
->addr
) &&
677 dest
->vport
== svc
->port
))) {
683 * Try to purge the destination from trash if not referenced
685 if (atomic_read(&dest
->refcnt
) == 1) {
686 IP_VS_DBG_BUF(3, "Removing destination %u/%s:%u "
689 IP_VS_DBG_ADDR(svc
->af
, &dest
->addr
),
691 list_del(&dest
->n_list
);
692 ip_vs_dst_reset(dest
);
693 __ip_vs_unbind_svc(dest
);
694 free_percpu(dest
->stats
.cpustats
);
704 * Clean up all the destinations in the trash
705 * Called by the ip_vs_control_cleanup()
707 * When the ip_vs_control_clearup is activated by ipvs module exit,
708 * the service tables must have been flushed and all the connections
709 * are expired, and the refcnt of each destination in the trash must
710 * be 1, so we simply release them here.
712 static void ip_vs_trash_cleanup(struct net
*net
)
714 struct ip_vs_dest
*dest
, *nxt
;
715 struct netns_ipvs
*ipvs
= net_ipvs(net
);
717 list_for_each_entry_safe(dest
, nxt
, &ipvs
->dest_trash
, n_list
) {
718 list_del(&dest
->n_list
);
719 ip_vs_dst_reset(dest
);
720 __ip_vs_unbind_svc(dest
);
721 free_percpu(dest
->stats
.cpustats
);
727 ip_vs_copy_stats(struct ip_vs_stats_user
*dst
, struct ip_vs_stats
*src
)
729 #define IP_VS_SHOW_STATS_COUNTER(c) dst->c = src->ustats.c - src->ustats0.c
731 spin_lock_bh(&src
->lock
);
733 IP_VS_SHOW_STATS_COUNTER(conns
);
734 IP_VS_SHOW_STATS_COUNTER(inpkts
);
735 IP_VS_SHOW_STATS_COUNTER(outpkts
);
736 IP_VS_SHOW_STATS_COUNTER(inbytes
);
737 IP_VS_SHOW_STATS_COUNTER(outbytes
);
739 ip_vs_read_estimator(dst
, src
);
741 spin_unlock_bh(&src
->lock
);
745 ip_vs_zero_stats(struct ip_vs_stats
*stats
)
747 spin_lock_bh(&stats
->lock
);
749 /* get current counters as zero point, rates are zeroed */
751 #define IP_VS_ZERO_STATS_COUNTER(c) stats->ustats0.c = stats->ustats.c
753 IP_VS_ZERO_STATS_COUNTER(conns
);
754 IP_VS_ZERO_STATS_COUNTER(inpkts
);
755 IP_VS_ZERO_STATS_COUNTER(outpkts
);
756 IP_VS_ZERO_STATS_COUNTER(inbytes
);
757 IP_VS_ZERO_STATS_COUNTER(outbytes
);
759 ip_vs_zero_estimator(stats
);
761 spin_unlock_bh(&stats
->lock
);
765 * Update a destination in the given service
768 __ip_vs_update_dest(struct ip_vs_service
*svc
, struct ip_vs_dest
*dest
,
769 struct ip_vs_dest_user_kern
*udest
, int add
)
771 struct netns_ipvs
*ipvs
= net_ipvs(svc
->net
);
774 /* set the weight and the flags */
775 atomic_set(&dest
->weight
, udest
->weight
);
776 conn_flags
= udest
->conn_flags
& IP_VS_CONN_F_DEST_MASK
;
777 conn_flags
|= IP_VS_CONN_F_INACTIVE
;
779 /* set the IP_VS_CONN_F_NOOUTPUT flag if not masquerading/NAT */
780 if ((conn_flags
& IP_VS_CONN_F_FWD_MASK
) != IP_VS_CONN_F_MASQ
) {
781 conn_flags
|= IP_VS_CONN_F_NOOUTPUT
;
784 * Put the real service in rs_table if not present.
785 * For now only for NAT!
787 write_lock_bh(&ipvs
->rs_lock
);
788 ip_vs_rs_hash(ipvs
, dest
);
789 write_unlock_bh(&ipvs
->rs_lock
);
791 atomic_set(&dest
->conn_flags
, conn_flags
);
793 /* bind the service */
795 __ip_vs_bind_svc(dest
, svc
);
797 if (dest
->svc
!= svc
) {
798 __ip_vs_unbind_svc(dest
);
799 ip_vs_zero_stats(&dest
->stats
);
800 __ip_vs_bind_svc(dest
, svc
);
804 /* set the dest status flags */
805 dest
->flags
|= IP_VS_DEST_F_AVAILABLE
;
807 if (udest
->u_threshold
== 0 || udest
->u_threshold
> dest
->u_threshold
)
808 dest
->flags
&= ~IP_VS_DEST_F_OVERLOAD
;
809 dest
->u_threshold
= udest
->u_threshold
;
810 dest
->l_threshold
= udest
->l_threshold
;
812 spin_lock_bh(&dest
->dst_lock
);
813 ip_vs_dst_reset(dest
);
814 spin_unlock_bh(&dest
->dst_lock
);
817 ip_vs_start_estimator(svc
->net
, &dest
->stats
);
819 write_lock_bh(&__ip_vs_svc_lock
);
821 /* Wait until all other svc users go away */
822 IP_VS_WAIT_WHILE(atomic_read(&svc
->usecnt
) > 0);
825 list_add(&dest
->n_list
, &svc
->destinations
);
829 /* call the update_service, because server weight may be changed */
830 if (svc
->scheduler
->update_service
)
831 svc
->scheduler
->update_service(svc
);
833 write_unlock_bh(&__ip_vs_svc_lock
);
838 * Create a destination for the given service
841 ip_vs_new_dest(struct ip_vs_service
*svc
, struct ip_vs_dest_user_kern
*udest
,
842 struct ip_vs_dest
**dest_p
)
844 struct ip_vs_dest
*dest
;
849 #ifdef CONFIG_IP_VS_IPV6
850 if (svc
->af
== AF_INET6
) {
851 atype
= ipv6_addr_type(&udest
->addr
.in6
);
852 if ((!(atype
& IPV6_ADDR_UNICAST
) ||
853 atype
& IPV6_ADDR_LINKLOCAL
) &&
854 !__ip_vs_addr_is_local_v6(svc
->net
, &udest
->addr
.in6
))
859 atype
= inet_addr_type(svc
->net
, udest
->addr
.ip
);
860 if (atype
!= RTN_LOCAL
&& atype
!= RTN_UNICAST
)
864 dest
= kzalloc(sizeof(struct ip_vs_dest
), GFP_KERNEL
);
868 dest
->stats
.cpustats
= alloc_percpu(struct ip_vs_cpu_stats
);
869 if (!dest
->stats
.cpustats
)
873 dest
->protocol
= svc
->protocol
;
874 dest
->vaddr
= svc
->addr
;
875 dest
->vport
= svc
->port
;
876 dest
->vfwmark
= svc
->fwmark
;
877 ip_vs_addr_copy(svc
->af
, &dest
->addr
, &udest
->addr
);
878 dest
->port
= udest
->port
;
880 atomic_set(&dest
->activeconns
, 0);
881 atomic_set(&dest
->inactconns
, 0);
882 atomic_set(&dest
->persistconns
, 0);
883 atomic_set(&dest
->refcnt
, 1);
885 INIT_LIST_HEAD(&dest
->d_list
);
886 spin_lock_init(&dest
->dst_lock
);
887 spin_lock_init(&dest
->stats
.lock
);
888 __ip_vs_update_dest(svc
, dest
, udest
, 1);
902 * Add a destination into an existing service
905 ip_vs_add_dest(struct ip_vs_service
*svc
, struct ip_vs_dest_user_kern
*udest
)
907 struct ip_vs_dest
*dest
;
908 union nf_inet_addr daddr
;
909 __be16 dport
= udest
->port
;
914 if (udest
->weight
< 0) {
915 pr_err("%s(): server weight less than zero\n", __func__
);
919 if (udest
->l_threshold
> udest
->u_threshold
) {
920 pr_err("%s(): lower threshold is higher than upper threshold\n",
925 ip_vs_addr_copy(svc
->af
, &daddr
, &udest
->addr
);
928 * Check if the dest already exists in the list
930 dest
= ip_vs_lookup_dest(svc
, &daddr
, dport
);
933 IP_VS_DBG(1, "%s(): dest already exists\n", __func__
);
938 * Check if the dest already exists in the trash and
939 * is from the same service
941 dest
= ip_vs_trash_get_dest(svc
, &daddr
, dport
);
944 IP_VS_DBG_BUF(3, "Get destination %s:%u from trash, "
945 "dest->refcnt=%d, service %u/%s:%u\n",
946 IP_VS_DBG_ADDR(svc
->af
, &daddr
), ntohs(dport
),
947 atomic_read(&dest
->refcnt
),
949 IP_VS_DBG_ADDR(svc
->af
, &dest
->vaddr
),
953 * Get the destination from the trash
955 list_del(&dest
->n_list
);
957 __ip_vs_update_dest(svc
, dest
, udest
, 1);
961 * Allocate and initialize the dest structure
963 ret
= ip_vs_new_dest(svc
, udest
, &dest
);
972 * Edit a destination in the given service
975 ip_vs_edit_dest(struct ip_vs_service
*svc
, struct ip_vs_dest_user_kern
*udest
)
977 struct ip_vs_dest
*dest
;
978 union nf_inet_addr daddr
;
979 __be16 dport
= udest
->port
;
983 if (udest
->weight
< 0) {
984 pr_err("%s(): server weight less than zero\n", __func__
);
988 if (udest
->l_threshold
> udest
->u_threshold
) {
989 pr_err("%s(): lower threshold is higher than upper threshold\n",
994 ip_vs_addr_copy(svc
->af
, &daddr
, &udest
->addr
);
997 * Lookup the destination list
999 dest
= ip_vs_lookup_dest(svc
, &daddr
, dport
);
1002 IP_VS_DBG(1, "%s(): dest doesn't exist\n", __func__
);
1006 __ip_vs_update_dest(svc
, dest
, udest
, 0);
1014 * Delete a destination (must be already unlinked from the service)
1016 static void __ip_vs_del_dest(struct net
*net
, struct ip_vs_dest
*dest
)
1018 struct netns_ipvs
*ipvs
= net_ipvs(net
);
1020 ip_vs_stop_estimator(net
, &dest
->stats
);
1023 * Remove it from the d-linked list with the real services.
1025 write_lock_bh(&ipvs
->rs_lock
);
1026 ip_vs_rs_unhash(dest
);
1027 write_unlock_bh(&ipvs
->rs_lock
);
1030 * Decrease the refcnt of the dest, and free the dest
1031 * if nobody refers to it (refcnt=0). Otherwise, throw
1032 * the destination into the trash.
1034 if (atomic_dec_and_test(&dest
->refcnt
)) {
1035 IP_VS_DBG_BUF(3, "Removing destination %u/%s:%u\n",
1037 IP_VS_DBG_ADDR(dest
->af
, &dest
->addr
),
1039 ip_vs_dst_reset(dest
);
1040 /* simply decrease svc->refcnt here, let the caller check
1041 and release the service if nobody refers to it.
1042 Only user context can release destination and service,
1043 and only one user context can update virtual service at a
1044 time, so the operation here is OK */
1045 atomic_dec(&dest
->svc
->refcnt
);
1046 free_percpu(dest
->stats
.cpustats
);
1049 IP_VS_DBG_BUF(3, "Moving dest %s:%u into trash, "
1050 "dest->refcnt=%d\n",
1051 IP_VS_DBG_ADDR(dest
->af
, &dest
->addr
),
1053 atomic_read(&dest
->refcnt
));
1054 list_add(&dest
->n_list
, &ipvs
->dest_trash
);
1055 atomic_inc(&dest
->refcnt
);
1061 * Unlink a destination from the given service
1063 static void __ip_vs_unlink_dest(struct ip_vs_service
*svc
,
1064 struct ip_vs_dest
*dest
,
1067 dest
->flags
&= ~IP_VS_DEST_F_AVAILABLE
;
1070 * Remove it from the d-linked destination list.
1072 list_del(&dest
->n_list
);
1076 * Call the update_service function of its scheduler
1078 if (svcupd
&& svc
->scheduler
->update_service
)
1079 svc
->scheduler
->update_service(svc
);
1084 * Delete a destination server in the given service
1087 ip_vs_del_dest(struct ip_vs_service
*svc
, struct ip_vs_dest_user_kern
*udest
)
1089 struct ip_vs_dest
*dest
;
1090 __be16 dport
= udest
->port
;
1094 dest
= ip_vs_lookup_dest(svc
, &udest
->addr
, dport
);
1097 IP_VS_DBG(1, "%s(): destination not found!\n", __func__
);
1101 write_lock_bh(&__ip_vs_svc_lock
);
1104 * Wait until all other svc users go away.
1106 IP_VS_WAIT_WHILE(atomic_read(&svc
->usecnt
) > 0);
1109 * Unlink dest from the service
1111 __ip_vs_unlink_dest(svc
, dest
, 1);
1113 write_unlock_bh(&__ip_vs_svc_lock
);
1116 * Delete the destination
1118 __ip_vs_del_dest(svc
->net
, dest
);
1127 * Add a service into the service hash table
1130 ip_vs_add_service(struct net
*net
, struct ip_vs_service_user_kern
*u
,
1131 struct ip_vs_service
**svc_p
)
1134 struct ip_vs_scheduler
*sched
= NULL
;
1135 struct ip_vs_pe
*pe
= NULL
;
1136 struct ip_vs_service
*svc
= NULL
;
1137 struct netns_ipvs
*ipvs
= net_ipvs(net
);
1139 /* increase the module use count */
1140 ip_vs_use_count_inc();
1142 /* Lookup the scheduler by 'u->sched_name' */
1143 sched
= ip_vs_scheduler_get(u
->sched_name
);
1144 if (sched
== NULL
) {
1145 pr_info("Scheduler module ip_vs_%s not found\n", u
->sched_name
);
1150 if (u
->pe_name
&& *u
->pe_name
) {
1151 pe
= ip_vs_pe_getbyname(u
->pe_name
);
1153 pr_info("persistence engine module ip_vs_pe_%s "
1154 "not found\n", u
->pe_name
);
1160 #ifdef CONFIG_IP_VS_IPV6
1161 if (u
->af
== AF_INET6
&& (u
->netmask
< 1 || u
->netmask
> 128)) {
1167 svc
= kzalloc(sizeof(struct ip_vs_service
), GFP_KERNEL
);
1169 IP_VS_DBG(1, "%s(): no memory\n", __func__
);
1173 svc
->stats
.cpustats
= alloc_percpu(struct ip_vs_cpu_stats
);
1174 if (!svc
->stats
.cpustats
)
1177 /* I'm the first user of the service */
1178 atomic_set(&svc
->usecnt
, 0);
1179 atomic_set(&svc
->refcnt
, 0);
1182 svc
->protocol
= u
->protocol
;
1183 ip_vs_addr_copy(svc
->af
, &svc
->addr
, &u
->addr
);
1184 svc
->port
= u
->port
;
1185 svc
->fwmark
= u
->fwmark
;
1186 svc
->flags
= u
->flags
;
1187 svc
->timeout
= u
->timeout
* HZ
;
1188 svc
->netmask
= u
->netmask
;
1191 INIT_LIST_HEAD(&svc
->destinations
);
1192 rwlock_init(&svc
->sched_lock
);
1193 spin_lock_init(&svc
->stats
.lock
);
1195 /* Bind the scheduler */
1196 ret
= ip_vs_bind_scheduler(svc
, sched
);
1201 /* Bind the ct retriever */
1202 ip_vs_bind_pe(svc
, pe
);
1205 /* Update the virtual service counters */
1206 if (svc
->port
== FTPPORT
)
1207 atomic_inc(&ipvs
->ftpsvc_counter
);
1208 else if (svc
->port
== 0)
1209 atomic_inc(&ipvs
->nullsvc_counter
);
1211 ip_vs_start_estimator(net
, &svc
->stats
);
1213 /* Count only IPv4 services for old get/setsockopt interface */
1214 if (svc
->af
== AF_INET
)
1215 ipvs
->num_services
++;
1217 /* Hash the service into the service table */
1218 write_lock_bh(&__ip_vs_svc_lock
);
1219 ip_vs_svc_hash(svc
);
1220 write_unlock_bh(&__ip_vs_svc_lock
);
1223 /* Now there is a service - full throttle */
1230 ip_vs_unbind_scheduler(svc
);
1233 ip_vs_app_inc_put(svc
->inc
);
1236 if (svc
->stats
.cpustats
)
1237 free_percpu(svc
->stats
.cpustats
);
1240 ip_vs_scheduler_put(sched
);
1243 /* decrease the module use count */
1244 ip_vs_use_count_dec();
1251 * Edit a service and bind it with a new scheduler
1254 ip_vs_edit_service(struct ip_vs_service
*svc
, struct ip_vs_service_user_kern
*u
)
1256 struct ip_vs_scheduler
*sched
, *old_sched
;
1257 struct ip_vs_pe
*pe
= NULL
, *old_pe
= NULL
;
1261 * Lookup the scheduler, by 'u->sched_name'
1263 sched
= ip_vs_scheduler_get(u
->sched_name
);
1264 if (sched
== NULL
) {
1265 pr_info("Scheduler module ip_vs_%s not found\n", u
->sched_name
);
1270 if (u
->pe_name
&& *u
->pe_name
) {
1271 pe
= ip_vs_pe_getbyname(u
->pe_name
);
1273 pr_info("persistence engine module ip_vs_pe_%s "
1274 "not found\n", u
->pe_name
);
1281 #ifdef CONFIG_IP_VS_IPV6
1282 if (u
->af
== AF_INET6
&& (u
->netmask
< 1 || u
->netmask
> 128)) {
1288 write_lock_bh(&__ip_vs_svc_lock
);
1291 * Wait until all other svc users go away.
1293 IP_VS_WAIT_WHILE(atomic_read(&svc
->usecnt
) > 0);
1296 * Set the flags and timeout value
1298 svc
->flags
= u
->flags
| IP_VS_SVC_F_HASHED
;
1299 svc
->timeout
= u
->timeout
* HZ
;
1300 svc
->netmask
= u
->netmask
;
1302 old_sched
= svc
->scheduler
;
1303 if (sched
!= old_sched
) {
1305 * Unbind the old scheduler
1307 if ((ret
= ip_vs_unbind_scheduler(svc
))) {
1313 * Bind the new scheduler
1315 if ((ret
= ip_vs_bind_scheduler(svc
, sched
))) {
1317 * If ip_vs_bind_scheduler fails, restore the old
1319 * The main reason of failure is out of memory.
1321 * The question is if the old scheduler can be
1322 * restored all the time. TODO: if it cannot be
1323 * restored some time, we must delete the service,
1324 * otherwise the system may crash.
1326 ip_vs_bind_scheduler(svc
, old_sched
);
1334 ip_vs_unbind_pe(svc
);
1335 ip_vs_bind_pe(svc
, pe
);
1339 write_unlock_bh(&__ip_vs_svc_lock
);
1341 ip_vs_scheduler_put(old_sched
);
1342 ip_vs_pe_put(old_pe
);
1348 * Delete a service from the service list
1349 * - The service must be unlinked, unlocked and not referenced!
1350 * - We are called under _bh lock
1352 static void __ip_vs_del_service(struct ip_vs_service
*svc
)
1354 struct ip_vs_dest
*dest
, *nxt
;
1355 struct ip_vs_scheduler
*old_sched
;
1356 struct ip_vs_pe
*old_pe
;
1357 struct netns_ipvs
*ipvs
= net_ipvs(svc
->net
);
1359 pr_info("%s: enter\n", __func__
);
1361 /* Count only IPv4 services for old get/setsockopt interface */
1362 if (svc
->af
== AF_INET
)
1363 ipvs
->num_services
--;
1365 ip_vs_stop_estimator(svc
->net
, &svc
->stats
);
1367 /* Unbind scheduler */
1368 old_sched
= svc
->scheduler
;
1369 ip_vs_unbind_scheduler(svc
);
1370 ip_vs_scheduler_put(old_sched
);
1372 /* Unbind persistence engine */
1374 ip_vs_unbind_pe(svc
);
1375 ip_vs_pe_put(old_pe
);
1377 /* Unbind app inc */
1379 ip_vs_app_inc_put(svc
->inc
);
1384 * Unlink the whole destination list
1386 list_for_each_entry_safe(dest
, nxt
, &svc
->destinations
, n_list
) {
1387 __ip_vs_unlink_dest(svc
, dest
, 0);
1388 __ip_vs_del_dest(svc
->net
, dest
);
1392 * Update the virtual service counters
1394 if (svc
->port
== FTPPORT
)
1395 atomic_dec(&ipvs
->ftpsvc_counter
);
1396 else if (svc
->port
== 0)
1397 atomic_dec(&ipvs
->nullsvc_counter
);
1400 * Free the service if nobody refers to it
1402 if (atomic_read(&svc
->refcnt
) == 0) {
1403 IP_VS_DBG_BUF(3, "Removing service %u/%s:%u usecnt=%d\n",
1405 IP_VS_DBG_ADDR(svc
->af
, &svc
->addr
),
1406 ntohs(svc
->port
), atomic_read(&svc
->usecnt
));
1407 free_percpu(svc
->stats
.cpustats
);
1411 /* decrease the module use count */
1412 ip_vs_use_count_dec();
1416 * Unlink a service from list and try to delete it if its refcnt reached 0
1418 static void ip_vs_unlink_service(struct ip_vs_service
*svc
)
1421 * Unhash it from the service table
1423 write_lock_bh(&__ip_vs_svc_lock
);
1425 ip_vs_svc_unhash(svc
);
1428 * Wait until all the svc users go away.
1430 IP_VS_WAIT_WHILE(atomic_read(&svc
->usecnt
) > 0);
1432 __ip_vs_del_service(svc
);
1434 write_unlock_bh(&__ip_vs_svc_lock
);
1438 * Delete a service from the service list
1440 static int ip_vs_del_service(struct ip_vs_service
*svc
)
1444 ip_vs_unlink_service(svc
);
1451 * Flush all the virtual services
1453 static int ip_vs_flush(struct net
*net
)
1456 struct ip_vs_service
*svc
, *nxt
;
1459 * Flush the service table hashed by <netns,protocol,addr,port>
1461 for(idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1462 list_for_each_entry_safe(svc
, nxt
, &ip_vs_svc_table
[idx
],
1464 if (net_eq(svc
->net
, net
))
1465 ip_vs_unlink_service(svc
);
1470 * Flush the service table hashed by fwmark
1472 for(idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1473 list_for_each_entry_safe(svc
, nxt
,
1474 &ip_vs_svc_fwm_table
[idx
], f_list
) {
1475 if (net_eq(svc
->net
, net
))
1476 ip_vs_unlink_service(svc
);
1484 * Delete service by {netns} in the service table.
1485 * Called by __ip_vs_cleanup()
1487 void ip_vs_service_net_cleanup(struct net
*net
)
1490 /* Check for "full" addressed entries */
1491 mutex_lock(&__ip_vs_mutex
);
1493 mutex_unlock(&__ip_vs_mutex
);
1497 * Release dst hold by dst_cache
1500 __ip_vs_dev_reset(struct ip_vs_dest
*dest
, struct net_device
*dev
)
1502 spin_lock_bh(&dest
->dst_lock
);
1503 if (dest
->dst_cache
&& dest
->dst_cache
->dev
== dev
) {
1504 IP_VS_DBG_BUF(3, "Reset dev:%s dest %s:%u ,dest->refcnt=%d\n",
1506 IP_VS_DBG_ADDR(dest
->af
, &dest
->addr
),
1508 atomic_read(&dest
->refcnt
));
1509 ip_vs_dst_reset(dest
);
1511 spin_unlock_bh(&dest
->dst_lock
);
1515 * Netdev event receiver
1516 * Currently only NETDEV_UNREGISTER is handled, i.e. if we hold a reference to
1517 * a device that is "unregister" it must be released.
1519 static int ip_vs_dst_event(struct notifier_block
*this, unsigned long event
,
1522 struct net_device
*dev
= ptr
;
1523 struct net
*net
= dev_net(dev
);
1524 struct ip_vs_service
*svc
;
1525 struct ip_vs_dest
*dest
;
1528 if (event
!= NETDEV_UNREGISTER
)
1530 IP_VS_DBG(3, "%s() dev=%s\n", __func__
, dev
->name
);
1532 mutex_lock(&__ip_vs_mutex
);
1533 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1534 list_for_each_entry(svc
, &ip_vs_svc_table
[idx
], s_list
) {
1535 if (net_eq(svc
->net
, net
)) {
1536 list_for_each_entry(dest
, &svc
->destinations
,
1538 __ip_vs_dev_reset(dest
, dev
);
1543 list_for_each_entry(svc
, &ip_vs_svc_fwm_table
[idx
], f_list
) {
1544 if (net_eq(svc
->net
, net
)) {
1545 list_for_each_entry(dest
, &svc
->destinations
,
1547 __ip_vs_dev_reset(dest
, dev
);
1554 list_for_each_entry(dest
, &net_ipvs(net
)->dest_trash
, n_list
) {
1555 __ip_vs_dev_reset(dest
, dev
);
1557 mutex_unlock(&__ip_vs_mutex
);
1563 * Zero counters in a service or all services
1565 static int ip_vs_zero_service(struct ip_vs_service
*svc
)
1567 struct ip_vs_dest
*dest
;
1569 write_lock_bh(&__ip_vs_svc_lock
);
1570 list_for_each_entry(dest
, &svc
->destinations
, n_list
) {
1571 ip_vs_zero_stats(&dest
->stats
);
1573 ip_vs_zero_stats(&svc
->stats
);
1574 write_unlock_bh(&__ip_vs_svc_lock
);
1578 static int ip_vs_zero_all(struct net
*net
)
1581 struct ip_vs_service
*svc
;
1583 for(idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1584 list_for_each_entry(svc
, &ip_vs_svc_table
[idx
], s_list
) {
1585 if (net_eq(svc
->net
, net
))
1586 ip_vs_zero_service(svc
);
1590 for(idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1591 list_for_each_entry(svc
, &ip_vs_svc_fwm_table
[idx
], f_list
) {
1592 if (net_eq(svc
->net
, net
))
1593 ip_vs_zero_service(svc
);
1597 ip_vs_zero_stats(&net_ipvs(net
)->tot_stats
);
1601 #ifdef CONFIG_SYSCTL
1603 proc_do_defense_mode(ctl_table
*table
, int write
,
1604 void __user
*buffer
, size_t *lenp
, loff_t
*ppos
)
1606 struct net
*net
= current
->nsproxy
->net_ns
;
1607 int *valp
= table
->data
;
1611 rc
= proc_dointvec(table
, write
, buffer
, lenp
, ppos
);
1612 if (write
&& (*valp
!= val
)) {
1613 if ((*valp
< 0) || (*valp
> 3)) {
1614 /* Restore the correct value */
1617 update_defense_level(net_ipvs(net
));
1624 proc_do_sync_threshold(ctl_table
*table
, int write
,
1625 void __user
*buffer
, size_t *lenp
, loff_t
*ppos
)
1627 int *valp
= table
->data
;
1631 /* backup the value first */
1632 memcpy(val
, valp
, sizeof(val
));
1634 rc
= proc_dointvec(table
, write
, buffer
, lenp
, ppos
);
1635 if (write
&& (valp
[0] < 0 || valp
[1] < 0 || valp
[0] >= valp
[1])) {
1636 /* Restore the correct value */
1637 memcpy(valp
, val
, sizeof(val
));
1643 proc_do_sync_mode(ctl_table
*table
, int write
,
1644 void __user
*buffer
, size_t *lenp
, loff_t
*ppos
)
1646 int *valp
= table
->data
;
1650 rc
= proc_dointvec(table
, write
, buffer
, lenp
, ppos
);
1651 if (write
&& (*valp
!= val
)) {
1652 if ((*valp
< 0) || (*valp
> 1)) {
1653 /* Restore the correct value */
1656 struct net
*net
= current
->nsproxy
->net_ns
;
1657 ip_vs_sync_switch_mode(net
, val
);
1664 * IPVS sysctl table (under the /proc/sys/net/ipv4/vs/)
1665 * Do not change order or insert new entries without
1666 * align with netns init in ip_vs_control_net_init()
1669 static struct ctl_table vs_vars
[] = {
1671 .procname
= "amemthresh",
1672 .maxlen
= sizeof(int),
1674 .proc_handler
= proc_dointvec
,
1677 .procname
= "am_droprate",
1678 .maxlen
= sizeof(int),
1680 .proc_handler
= proc_dointvec
,
1683 .procname
= "drop_entry",
1684 .maxlen
= sizeof(int),
1686 .proc_handler
= proc_do_defense_mode
,
1689 .procname
= "drop_packet",
1690 .maxlen
= sizeof(int),
1692 .proc_handler
= proc_do_defense_mode
,
1694 #ifdef CONFIG_IP_VS_NFCT
1696 .procname
= "conntrack",
1697 .maxlen
= sizeof(int),
1699 .proc_handler
= &proc_dointvec
,
1703 .procname
= "secure_tcp",
1704 .maxlen
= sizeof(int),
1706 .proc_handler
= proc_do_defense_mode
,
1709 .procname
= "snat_reroute",
1710 .maxlen
= sizeof(int),
1712 .proc_handler
= &proc_dointvec
,
1715 .procname
= "sync_version",
1716 .maxlen
= sizeof(int),
1718 .proc_handler
= &proc_do_sync_mode
,
1721 .procname
= "cache_bypass",
1722 .maxlen
= sizeof(int),
1724 .proc_handler
= proc_dointvec
,
1727 .procname
= "expire_nodest_conn",
1728 .maxlen
= sizeof(int),
1730 .proc_handler
= proc_dointvec
,
1733 .procname
= "expire_quiescent_template",
1734 .maxlen
= sizeof(int),
1736 .proc_handler
= proc_dointvec
,
1739 .procname
= "sync_threshold",
1741 sizeof(((struct netns_ipvs
*)0)->sysctl_sync_threshold
),
1743 .proc_handler
= proc_do_sync_threshold
,
1746 .procname
= "nat_icmp_send",
1747 .maxlen
= sizeof(int),
1749 .proc_handler
= proc_dointvec
,
1751 #ifdef CONFIG_IP_VS_DEBUG
1753 .procname
= "debug_level",
1754 .data
= &sysctl_ip_vs_debug_level
,
1755 .maxlen
= sizeof(int),
1757 .proc_handler
= proc_dointvec
,
1762 .procname
= "timeout_established",
1763 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_ESTABLISHED
],
1764 .maxlen
= sizeof(int),
1766 .proc_handler
= proc_dointvec_jiffies
,
1769 .procname
= "timeout_synsent",
1770 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_SYN_SENT
],
1771 .maxlen
= sizeof(int),
1773 .proc_handler
= proc_dointvec_jiffies
,
1776 .procname
= "timeout_synrecv",
1777 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_SYN_RECV
],
1778 .maxlen
= sizeof(int),
1780 .proc_handler
= proc_dointvec_jiffies
,
1783 .procname
= "timeout_finwait",
1784 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_FIN_WAIT
],
1785 .maxlen
= sizeof(int),
1787 .proc_handler
= proc_dointvec_jiffies
,
1790 .procname
= "timeout_timewait",
1791 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_TIME_WAIT
],
1792 .maxlen
= sizeof(int),
1794 .proc_handler
= proc_dointvec_jiffies
,
1797 .procname
= "timeout_close",
1798 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_CLOSE
],
1799 .maxlen
= sizeof(int),
1801 .proc_handler
= proc_dointvec_jiffies
,
1804 .procname
= "timeout_closewait",
1805 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_CLOSE_WAIT
],
1806 .maxlen
= sizeof(int),
1808 .proc_handler
= proc_dointvec_jiffies
,
1811 .procname
= "timeout_lastack",
1812 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_LAST_ACK
],
1813 .maxlen
= sizeof(int),
1815 .proc_handler
= proc_dointvec_jiffies
,
1818 .procname
= "timeout_listen",
1819 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_LISTEN
],
1820 .maxlen
= sizeof(int),
1822 .proc_handler
= proc_dointvec_jiffies
,
1825 .procname
= "timeout_synack",
1826 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_SYNACK
],
1827 .maxlen
= sizeof(int),
1829 .proc_handler
= proc_dointvec_jiffies
,
1832 .procname
= "timeout_udp",
1833 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_UDP
],
1834 .maxlen
= sizeof(int),
1836 .proc_handler
= proc_dointvec_jiffies
,
1839 .procname
= "timeout_icmp",
1840 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_ICMP
],
1841 .maxlen
= sizeof(int),
1843 .proc_handler
= proc_dointvec_jiffies
,
1851 #ifdef CONFIG_PROC_FS
1854 struct seq_net_private p
; /* Do not move this, netns depends upon it*/
1855 struct list_head
*table
;
1860 * Write the contents of the VS rule table to a PROCfs file.
1861 * (It is kept just for backward compatibility)
1863 static inline const char *ip_vs_fwd_name(unsigned int flags
)
1865 switch (flags
& IP_VS_CONN_F_FWD_MASK
) {
1866 case IP_VS_CONN_F_LOCALNODE
:
1868 case IP_VS_CONN_F_TUNNEL
:
1870 case IP_VS_CONN_F_DROUTE
:
1878 /* Get the Nth entry in the two lists */
1879 static struct ip_vs_service
*ip_vs_info_array(struct seq_file
*seq
, loff_t pos
)
1881 struct net
*net
= seq_file_net(seq
);
1882 struct ip_vs_iter
*iter
= seq
->private;
1884 struct ip_vs_service
*svc
;
1886 /* look in hash by protocol */
1887 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1888 list_for_each_entry(svc
, &ip_vs_svc_table
[idx
], s_list
) {
1889 if (net_eq(svc
->net
, net
) && pos
-- == 0) {
1890 iter
->table
= ip_vs_svc_table
;
1897 /* keep looking in fwmark */
1898 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1899 list_for_each_entry(svc
, &ip_vs_svc_fwm_table
[idx
], f_list
) {
1900 if (net_eq(svc
->net
, net
) && pos
-- == 0) {
1901 iter
->table
= ip_vs_svc_fwm_table
;
1911 static void *ip_vs_info_seq_start(struct seq_file
*seq
, loff_t
*pos
)
1912 __acquires(__ip_vs_svc_lock
)
1915 read_lock_bh(&__ip_vs_svc_lock
);
1916 return *pos
? ip_vs_info_array(seq
, *pos
- 1) : SEQ_START_TOKEN
;
1920 static void *ip_vs_info_seq_next(struct seq_file
*seq
, void *v
, loff_t
*pos
)
1922 struct list_head
*e
;
1923 struct ip_vs_iter
*iter
;
1924 struct ip_vs_service
*svc
;
1927 if (v
== SEQ_START_TOKEN
)
1928 return ip_vs_info_array(seq
,0);
1931 iter
= seq
->private;
1933 if (iter
->table
== ip_vs_svc_table
) {
1934 /* next service in table hashed by protocol */
1935 if ((e
= svc
->s_list
.next
) != &ip_vs_svc_table
[iter
->bucket
])
1936 return list_entry(e
, struct ip_vs_service
, s_list
);
1939 while (++iter
->bucket
< IP_VS_SVC_TAB_SIZE
) {
1940 list_for_each_entry(svc
,&ip_vs_svc_table
[iter
->bucket
],
1946 iter
->table
= ip_vs_svc_fwm_table
;
1951 /* next service in hashed by fwmark */
1952 if ((e
= svc
->f_list
.next
) != &ip_vs_svc_fwm_table
[iter
->bucket
])
1953 return list_entry(e
, struct ip_vs_service
, f_list
);
1956 while (++iter
->bucket
< IP_VS_SVC_TAB_SIZE
) {
1957 list_for_each_entry(svc
, &ip_vs_svc_fwm_table
[iter
->bucket
],
1965 static void ip_vs_info_seq_stop(struct seq_file
*seq
, void *v
)
1966 __releases(__ip_vs_svc_lock
)
1968 read_unlock_bh(&__ip_vs_svc_lock
);
1972 static int ip_vs_info_seq_show(struct seq_file
*seq
, void *v
)
1974 if (v
== SEQ_START_TOKEN
) {
1976 "IP Virtual Server version %d.%d.%d (size=%d)\n",
1977 NVERSION(IP_VS_VERSION_CODE
), ip_vs_conn_tab_size
);
1979 "Prot LocalAddress:Port Scheduler Flags\n");
1981 " -> RemoteAddress:Port Forward Weight ActiveConn InActConn\n");
1983 const struct ip_vs_service
*svc
= v
;
1984 const struct ip_vs_iter
*iter
= seq
->private;
1985 const struct ip_vs_dest
*dest
;
1987 if (iter
->table
== ip_vs_svc_table
) {
1988 #ifdef CONFIG_IP_VS_IPV6
1989 if (svc
->af
== AF_INET6
)
1990 seq_printf(seq
, "%s [%pI6]:%04X %s ",
1991 ip_vs_proto_name(svc
->protocol
),
1994 svc
->scheduler
->name
);
1997 seq_printf(seq
, "%s %08X:%04X %s %s ",
1998 ip_vs_proto_name(svc
->protocol
),
1999 ntohl(svc
->addr
.ip
),
2001 svc
->scheduler
->name
,
2002 (svc
->flags
& IP_VS_SVC_F_ONEPACKET
)?"ops ":"");
2004 seq_printf(seq
, "FWM %08X %s %s",
2005 svc
->fwmark
, svc
->scheduler
->name
,
2006 (svc
->flags
& IP_VS_SVC_F_ONEPACKET
)?"ops ":"");
2009 if (svc
->flags
& IP_VS_SVC_F_PERSISTENT
)
2010 seq_printf(seq
, "persistent %d %08X\n",
2012 ntohl(svc
->netmask
));
2014 seq_putc(seq
, '\n');
2016 list_for_each_entry(dest
, &svc
->destinations
, n_list
) {
2017 #ifdef CONFIG_IP_VS_IPV6
2018 if (dest
->af
== AF_INET6
)
2021 " %-7s %-6d %-10d %-10d\n",
2024 ip_vs_fwd_name(atomic_read(&dest
->conn_flags
)),
2025 atomic_read(&dest
->weight
),
2026 atomic_read(&dest
->activeconns
),
2027 atomic_read(&dest
->inactconns
));
2032 "%-7s %-6d %-10d %-10d\n",
2033 ntohl(dest
->addr
.ip
),
2035 ip_vs_fwd_name(atomic_read(&dest
->conn_flags
)),
2036 atomic_read(&dest
->weight
),
2037 atomic_read(&dest
->activeconns
),
2038 atomic_read(&dest
->inactconns
));
2045 static const struct seq_operations ip_vs_info_seq_ops
= {
2046 .start
= ip_vs_info_seq_start
,
2047 .next
= ip_vs_info_seq_next
,
2048 .stop
= ip_vs_info_seq_stop
,
2049 .show
= ip_vs_info_seq_show
,
2052 static int ip_vs_info_open(struct inode
*inode
, struct file
*file
)
2054 return seq_open_net(inode
, file
, &ip_vs_info_seq_ops
,
2055 sizeof(struct ip_vs_iter
));
2058 static const struct file_operations ip_vs_info_fops
= {
2059 .owner
= THIS_MODULE
,
2060 .open
= ip_vs_info_open
,
2062 .llseek
= seq_lseek
,
2063 .release
= seq_release_net
,
2066 static int ip_vs_stats_show(struct seq_file
*seq
, void *v
)
2068 struct net
*net
= seq_file_single_net(seq
);
2069 struct ip_vs_stats_user show
;
2071 /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */
2073 " Total Incoming Outgoing Incoming Outgoing\n");
2075 " Conns Packets Packets Bytes Bytes\n");
2077 ip_vs_copy_stats(&show
, &net_ipvs(net
)->tot_stats
);
2078 seq_printf(seq
, "%8X %8X %8X %16LX %16LX\n\n", show
.conns
,
2079 show
.inpkts
, show
.outpkts
,
2080 (unsigned long long) show
.inbytes
,
2081 (unsigned long long) show
.outbytes
);
2083 /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */
2085 " Conns/s Pkts/s Pkts/s Bytes/s Bytes/s\n");
2086 seq_printf(seq
, "%8X %8X %8X %16X %16X\n",
2087 show
.cps
, show
.inpps
, show
.outpps
,
2088 show
.inbps
, show
.outbps
);
2093 static int ip_vs_stats_seq_open(struct inode
*inode
, struct file
*file
)
2095 return single_open_net(inode
, file
, ip_vs_stats_show
);
2098 static const struct file_operations ip_vs_stats_fops
= {
2099 .owner
= THIS_MODULE
,
2100 .open
= ip_vs_stats_seq_open
,
2102 .llseek
= seq_lseek
,
2103 .release
= single_release_net
,
2106 static int ip_vs_stats_percpu_show(struct seq_file
*seq
, void *v
)
2108 struct net
*net
= seq_file_single_net(seq
);
2109 struct ip_vs_stats
*tot_stats
= &net_ipvs(net
)->tot_stats
;
2110 struct ip_vs_cpu_stats
*cpustats
= tot_stats
->cpustats
;
2111 struct ip_vs_stats_user rates
;
2114 /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */
2116 " Total Incoming Outgoing Incoming Outgoing\n");
2118 "CPU Conns Packets Packets Bytes Bytes\n");
2120 for_each_possible_cpu(i
) {
2121 struct ip_vs_cpu_stats
*u
= per_cpu_ptr(cpustats
, i
);
2123 __u64 inbytes
, outbytes
;
2126 start
= u64_stats_fetch_begin_bh(&u
->syncp
);
2127 inbytes
= u
->ustats
.inbytes
;
2128 outbytes
= u
->ustats
.outbytes
;
2129 } while (u64_stats_fetch_retry_bh(&u
->syncp
, start
));
2131 seq_printf(seq
, "%3X %8X %8X %8X %16LX %16LX\n",
2132 i
, u
->ustats
.conns
, u
->ustats
.inpkts
,
2133 u
->ustats
.outpkts
, (__u64
)inbytes
,
2137 spin_lock_bh(&tot_stats
->lock
);
2139 seq_printf(seq
, " ~ %8X %8X %8X %16LX %16LX\n\n",
2140 tot_stats
->ustats
.conns
, tot_stats
->ustats
.inpkts
,
2141 tot_stats
->ustats
.outpkts
,
2142 (unsigned long long) tot_stats
->ustats
.inbytes
,
2143 (unsigned long long) tot_stats
->ustats
.outbytes
);
2145 ip_vs_read_estimator(&rates
, tot_stats
);
2147 spin_unlock_bh(&tot_stats
->lock
);
2149 /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */
2151 " Conns/s Pkts/s Pkts/s Bytes/s Bytes/s\n");
2152 seq_printf(seq
, " %8X %8X %8X %16X %16X\n",
2162 static int ip_vs_stats_percpu_seq_open(struct inode
*inode
, struct file
*file
)
2164 return single_open_net(inode
, file
, ip_vs_stats_percpu_show
);
2167 static const struct file_operations ip_vs_stats_percpu_fops
= {
2168 .owner
= THIS_MODULE
,
2169 .open
= ip_vs_stats_percpu_seq_open
,
2171 .llseek
= seq_lseek
,
2172 .release
= single_release_net
,
2177 * Set timeout values for tcp tcpfin udp in the timeout_table.
2179 static int ip_vs_set_timeout(struct net
*net
, struct ip_vs_timeout_user
*u
)
2181 #if defined(CONFIG_IP_VS_PROTO_TCP) || defined(CONFIG_IP_VS_PROTO_UDP)
2182 struct ip_vs_proto_data
*pd
;
2185 IP_VS_DBG(2, "Setting timeout tcp:%d tcpfin:%d udp:%d\n",
2190 #ifdef CONFIG_IP_VS_PROTO_TCP
2191 if (u
->tcp_timeout
) {
2192 pd
= ip_vs_proto_data_get(net
, IPPROTO_TCP
);
2193 pd
->timeout_table
[IP_VS_TCP_S_ESTABLISHED
]
2194 = u
->tcp_timeout
* HZ
;
2197 if (u
->tcp_fin_timeout
) {
2198 pd
= ip_vs_proto_data_get(net
, IPPROTO_TCP
);
2199 pd
->timeout_table
[IP_VS_TCP_S_FIN_WAIT
]
2200 = u
->tcp_fin_timeout
* HZ
;
2204 #ifdef CONFIG_IP_VS_PROTO_UDP
2205 if (u
->udp_timeout
) {
2206 pd
= ip_vs_proto_data_get(net
, IPPROTO_UDP
);
2207 pd
->timeout_table
[IP_VS_UDP_S_NORMAL
]
2208 = u
->udp_timeout
* HZ
;
2215 #define SET_CMDID(cmd) (cmd - IP_VS_BASE_CTL)
2216 #define SERVICE_ARG_LEN (sizeof(struct ip_vs_service_user))
2217 #define SVCDEST_ARG_LEN (sizeof(struct ip_vs_service_user) + \
2218 sizeof(struct ip_vs_dest_user))
2219 #define TIMEOUT_ARG_LEN (sizeof(struct ip_vs_timeout_user))
2220 #define DAEMON_ARG_LEN (sizeof(struct ip_vs_daemon_user))
2221 #define MAX_ARG_LEN SVCDEST_ARG_LEN
2223 static const unsigned char set_arglen
[SET_CMDID(IP_VS_SO_SET_MAX
)+1] = {
2224 [SET_CMDID(IP_VS_SO_SET_ADD
)] = SERVICE_ARG_LEN
,
2225 [SET_CMDID(IP_VS_SO_SET_EDIT
)] = SERVICE_ARG_LEN
,
2226 [SET_CMDID(IP_VS_SO_SET_DEL
)] = SERVICE_ARG_LEN
,
2227 [SET_CMDID(IP_VS_SO_SET_FLUSH
)] = 0,
2228 [SET_CMDID(IP_VS_SO_SET_ADDDEST
)] = SVCDEST_ARG_LEN
,
2229 [SET_CMDID(IP_VS_SO_SET_DELDEST
)] = SVCDEST_ARG_LEN
,
2230 [SET_CMDID(IP_VS_SO_SET_EDITDEST
)] = SVCDEST_ARG_LEN
,
2231 [SET_CMDID(IP_VS_SO_SET_TIMEOUT
)] = TIMEOUT_ARG_LEN
,
2232 [SET_CMDID(IP_VS_SO_SET_STARTDAEMON
)] = DAEMON_ARG_LEN
,
2233 [SET_CMDID(IP_VS_SO_SET_STOPDAEMON
)] = DAEMON_ARG_LEN
,
2234 [SET_CMDID(IP_VS_SO_SET_ZERO
)] = SERVICE_ARG_LEN
,
2237 static void ip_vs_copy_usvc_compat(struct ip_vs_service_user_kern
*usvc
,
2238 struct ip_vs_service_user
*usvc_compat
)
2240 memset(usvc
, 0, sizeof(*usvc
));
2243 usvc
->protocol
= usvc_compat
->protocol
;
2244 usvc
->addr
.ip
= usvc_compat
->addr
;
2245 usvc
->port
= usvc_compat
->port
;
2246 usvc
->fwmark
= usvc_compat
->fwmark
;
2248 /* Deep copy of sched_name is not needed here */
2249 usvc
->sched_name
= usvc_compat
->sched_name
;
2251 usvc
->flags
= usvc_compat
->flags
;
2252 usvc
->timeout
= usvc_compat
->timeout
;
2253 usvc
->netmask
= usvc_compat
->netmask
;
2256 static void ip_vs_copy_udest_compat(struct ip_vs_dest_user_kern
*udest
,
2257 struct ip_vs_dest_user
*udest_compat
)
2259 memset(udest
, 0, sizeof(*udest
));
2261 udest
->addr
.ip
= udest_compat
->addr
;
2262 udest
->port
= udest_compat
->port
;
2263 udest
->conn_flags
= udest_compat
->conn_flags
;
2264 udest
->weight
= udest_compat
->weight
;
2265 udest
->u_threshold
= udest_compat
->u_threshold
;
2266 udest
->l_threshold
= udest_compat
->l_threshold
;
2270 do_ip_vs_set_ctl(struct sock
*sk
, int cmd
, void __user
*user
, unsigned int len
)
2272 struct net
*net
= sock_net(sk
);
2274 unsigned char arg
[MAX_ARG_LEN
];
2275 struct ip_vs_service_user
*usvc_compat
;
2276 struct ip_vs_service_user_kern usvc
;
2277 struct ip_vs_service
*svc
;
2278 struct ip_vs_dest_user
*udest_compat
;
2279 struct ip_vs_dest_user_kern udest
;
2280 struct netns_ipvs
*ipvs
= net_ipvs(net
);
2282 if (!capable(CAP_NET_ADMIN
))
2285 if (cmd
< IP_VS_BASE_CTL
|| cmd
> IP_VS_SO_SET_MAX
)
2287 if (len
< 0 || len
> MAX_ARG_LEN
)
2289 if (len
!= set_arglen
[SET_CMDID(cmd
)]) {
2290 pr_err("set_ctl: len %u != %u\n",
2291 len
, set_arglen
[SET_CMDID(cmd
)]);
2295 if (copy_from_user(arg
, user
, len
) != 0)
2298 /* increase the module use count */
2299 ip_vs_use_count_inc();
2301 /* Handle daemons since they have another lock */
2302 if (cmd
== IP_VS_SO_SET_STARTDAEMON
||
2303 cmd
== IP_VS_SO_SET_STOPDAEMON
) {
2304 struct ip_vs_daemon_user
*dm
= (struct ip_vs_daemon_user
*)arg
;
2306 if (mutex_lock_interruptible(&ipvs
->sync_mutex
)) {
2310 if (cmd
== IP_VS_SO_SET_STARTDAEMON
)
2311 ret
= start_sync_thread(net
, dm
->state
, dm
->mcast_ifn
,
2314 ret
= stop_sync_thread(net
, dm
->state
);
2315 mutex_unlock(&ipvs
->sync_mutex
);
2319 if (mutex_lock_interruptible(&__ip_vs_mutex
)) {
2324 if (cmd
== IP_VS_SO_SET_FLUSH
) {
2325 /* Flush the virtual service */
2326 ret
= ip_vs_flush(net
);
2328 } else if (cmd
== IP_VS_SO_SET_TIMEOUT
) {
2329 /* Set timeout values for (tcp tcpfin udp) */
2330 ret
= ip_vs_set_timeout(net
, (struct ip_vs_timeout_user
*)arg
);
2334 usvc_compat
= (struct ip_vs_service_user
*)arg
;
2335 udest_compat
= (struct ip_vs_dest_user
*)(usvc_compat
+ 1);
2337 /* We only use the new structs internally, so copy userspace compat
2338 * structs to extended internal versions */
2339 ip_vs_copy_usvc_compat(&usvc
, usvc_compat
);
2340 ip_vs_copy_udest_compat(&udest
, udest_compat
);
2342 if (cmd
== IP_VS_SO_SET_ZERO
) {
2343 /* if no service address is set, zero counters in all */
2344 if (!usvc
.fwmark
&& !usvc
.addr
.ip
&& !usvc
.port
) {
2345 ret
= ip_vs_zero_all(net
);
2350 /* Check for valid protocol: TCP or UDP or SCTP, even for fwmark!=0 */
2351 if (usvc
.protocol
!= IPPROTO_TCP
&& usvc
.protocol
!= IPPROTO_UDP
&&
2352 usvc
.protocol
!= IPPROTO_SCTP
) {
2353 pr_err("set_ctl: invalid protocol: %d %pI4:%d %s\n",
2354 usvc
.protocol
, &usvc
.addr
.ip
,
2355 ntohs(usvc
.port
), usvc
.sched_name
);
2360 /* Lookup the exact service by <protocol, addr, port> or fwmark */
2361 if (usvc
.fwmark
== 0)
2362 svc
= __ip_vs_service_find(net
, usvc
.af
, usvc
.protocol
,
2363 &usvc
.addr
, usvc
.port
);
2365 svc
= __ip_vs_svc_fwm_find(net
, usvc
.af
, usvc
.fwmark
);
2367 if (cmd
!= IP_VS_SO_SET_ADD
2368 && (svc
== NULL
|| svc
->protocol
!= usvc
.protocol
)) {
2374 case IP_VS_SO_SET_ADD
:
2378 ret
= ip_vs_add_service(net
, &usvc
, &svc
);
2380 case IP_VS_SO_SET_EDIT
:
2381 ret
= ip_vs_edit_service(svc
, &usvc
);
2383 case IP_VS_SO_SET_DEL
:
2384 ret
= ip_vs_del_service(svc
);
2388 case IP_VS_SO_SET_ZERO
:
2389 ret
= ip_vs_zero_service(svc
);
2391 case IP_VS_SO_SET_ADDDEST
:
2392 ret
= ip_vs_add_dest(svc
, &udest
);
2394 case IP_VS_SO_SET_EDITDEST
:
2395 ret
= ip_vs_edit_dest(svc
, &udest
);
2397 case IP_VS_SO_SET_DELDEST
:
2398 ret
= ip_vs_del_dest(svc
, &udest
);
2405 mutex_unlock(&__ip_vs_mutex
);
2407 /* decrease the module use count */
2408 ip_vs_use_count_dec();
2415 ip_vs_copy_service(struct ip_vs_service_entry
*dst
, struct ip_vs_service
*src
)
2417 dst
->protocol
= src
->protocol
;
2418 dst
->addr
= src
->addr
.ip
;
2419 dst
->port
= src
->port
;
2420 dst
->fwmark
= src
->fwmark
;
2421 strlcpy(dst
->sched_name
, src
->scheduler
->name
, sizeof(dst
->sched_name
));
2422 dst
->flags
= src
->flags
;
2423 dst
->timeout
= src
->timeout
/ HZ
;
2424 dst
->netmask
= src
->netmask
;
2425 dst
->num_dests
= src
->num_dests
;
2426 ip_vs_copy_stats(&dst
->stats
, &src
->stats
);
2430 __ip_vs_get_service_entries(struct net
*net
,
2431 const struct ip_vs_get_services
*get
,
2432 struct ip_vs_get_services __user
*uptr
)
2435 struct ip_vs_service
*svc
;
2436 struct ip_vs_service_entry entry
;
2439 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
2440 list_for_each_entry(svc
, &ip_vs_svc_table
[idx
], s_list
) {
2441 /* Only expose IPv4 entries to old interface */
2442 if (svc
->af
!= AF_INET
|| !net_eq(svc
->net
, net
))
2445 if (count
>= get
->num_services
)
2447 memset(&entry
, 0, sizeof(entry
));
2448 ip_vs_copy_service(&entry
, svc
);
2449 if (copy_to_user(&uptr
->entrytable
[count
],
2450 &entry
, sizeof(entry
))) {
2458 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
2459 list_for_each_entry(svc
, &ip_vs_svc_fwm_table
[idx
], f_list
) {
2460 /* Only expose IPv4 entries to old interface */
2461 if (svc
->af
!= AF_INET
|| !net_eq(svc
->net
, net
))
2464 if (count
>= get
->num_services
)
2466 memset(&entry
, 0, sizeof(entry
));
2467 ip_vs_copy_service(&entry
, svc
);
2468 if (copy_to_user(&uptr
->entrytable
[count
],
2469 &entry
, sizeof(entry
))) {
2481 __ip_vs_get_dest_entries(struct net
*net
, const struct ip_vs_get_dests
*get
,
2482 struct ip_vs_get_dests __user
*uptr
)
2484 struct ip_vs_service
*svc
;
2485 union nf_inet_addr addr
= { .ip
= get
->addr
};
2489 svc
= __ip_vs_svc_fwm_find(net
, AF_INET
, get
->fwmark
);
2491 svc
= __ip_vs_service_find(net
, AF_INET
, get
->protocol
, &addr
,
2496 struct ip_vs_dest
*dest
;
2497 struct ip_vs_dest_entry entry
;
2499 list_for_each_entry(dest
, &svc
->destinations
, n_list
) {
2500 if (count
>= get
->num_dests
)
2503 entry
.addr
= dest
->addr
.ip
;
2504 entry
.port
= dest
->port
;
2505 entry
.conn_flags
= atomic_read(&dest
->conn_flags
);
2506 entry
.weight
= atomic_read(&dest
->weight
);
2507 entry
.u_threshold
= dest
->u_threshold
;
2508 entry
.l_threshold
= dest
->l_threshold
;
2509 entry
.activeconns
= atomic_read(&dest
->activeconns
);
2510 entry
.inactconns
= atomic_read(&dest
->inactconns
);
2511 entry
.persistconns
= atomic_read(&dest
->persistconns
);
2512 ip_vs_copy_stats(&entry
.stats
, &dest
->stats
);
2513 if (copy_to_user(&uptr
->entrytable
[count
],
2514 &entry
, sizeof(entry
))) {
2526 __ip_vs_get_timeouts(struct net
*net
, struct ip_vs_timeout_user
*u
)
2528 #if defined(CONFIG_IP_VS_PROTO_TCP) || defined(CONFIG_IP_VS_PROTO_UDP)
2529 struct ip_vs_proto_data
*pd
;
2532 #ifdef CONFIG_IP_VS_PROTO_TCP
2533 pd
= ip_vs_proto_data_get(net
, IPPROTO_TCP
);
2534 u
->tcp_timeout
= pd
->timeout_table
[IP_VS_TCP_S_ESTABLISHED
] / HZ
;
2535 u
->tcp_fin_timeout
= pd
->timeout_table
[IP_VS_TCP_S_FIN_WAIT
] / HZ
;
2537 #ifdef CONFIG_IP_VS_PROTO_UDP
2538 pd
= ip_vs_proto_data_get(net
, IPPROTO_UDP
);
2540 pd
->timeout_table
[IP_VS_UDP_S_NORMAL
] / HZ
;
2545 #define GET_CMDID(cmd) (cmd - IP_VS_BASE_CTL)
2546 #define GET_INFO_ARG_LEN (sizeof(struct ip_vs_getinfo))
2547 #define GET_SERVICES_ARG_LEN (sizeof(struct ip_vs_get_services))
2548 #define GET_SERVICE_ARG_LEN (sizeof(struct ip_vs_service_entry))
2549 #define GET_DESTS_ARG_LEN (sizeof(struct ip_vs_get_dests))
2550 #define GET_TIMEOUT_ARG_LEN (sizeof(struct ip_vs_timeout_user))
2551 #define GET_DAEMON_ARG_LEN (sizeof(struct ip_vs_daemon_user) * 2)
2553 static const unsigned char get_arglen
[GET_CMDID(IP_VS_SO_GET_MAX
)+1] = {
2554 [GET_CMDID(IP_VS_SO_GET_VERSION
)] = 64,
2555 [GET_CMDID(IP_VS_SO_GET_INFO
)] = GET_INFO_ARG_LEN
,
2556 [GET_CMDID(IP_VS_SO_GET_SERVICES
)] = GET_SERVICES_ARG_LEN
,
2557 [GET_CMDID(IP_VS_SO_GET_SERVICE
)] = GET_SERVICE_ARG_LEN
,
2558 [GET_CMDID(IP_VS_SO_GET_DESTS
)] = GET_DESTS_ARG_LEN
,
2559 [GET_CMDID(IP_VS_SO_GET_TIMEOUT
)] = GET_TIMEOUT_ARG_LEN
,
2560 [GET_CMDID(IP_VS_SO_GET_DAEMON
)] = GET_DAEMON_ARG_LEN
,
2564 do_ip_vs_get_ctl(struct sock
*sk
, int cmd
, void __user
*user
, int *len
)
2566 unsigned char arg
[128];
2568 unsigned int copylen
;
2569 struct net
*net
= sock_net(sk
);
2570 struct netns_ipvs
*ipvs
= net_ipvs(net
);
2573 if (!capable(CAP_NET_ADMIN
))
2576 if (cmd
< IP_VS_BASE_CTL
|| cmd
> IP_VS_SO_GET_MAX
)
2579 if (*len
< get_arglen
[GET_CMDID(cmd
)]) {
2580 pr_err("get_ctl: len %u < %u\n",
2581 *len
, get_arglen
[GET_CMDID(cmd
)]);
2585 copylen
= get_arglen
[GET_CMDID(cmd
)];
2589 if (copy_from_user(arg
, user
, copylen
) != 0)
2592 * Handle daemons first since it has its own locking
2594 if (cmd
== IP_VS_SO_GET_DAEMON
) {
2595 struct ip_vs_daemon_user d
[2];
2597 memset(&d
, 0, sizeof(d
));
2598 if (mutex_lock_interruptible(&ipvs
->sync_mutex
))
2599 return -ERESTARTSYS
;
2601 if (ipvs
->sync_state
& IP_VS_STATE_MASTER
) {
2602 d
[0].state
= IP_VS_STATE_MASTER
;
2603 strlcpy(d
[0].mcast_ifn
, ipvs
->master_mcast_ifn
,
2604 sizeof(d
[0].mcast_ifn
));
2605 d
[0].syncid
= ipvs
->master_syncid
;
2607 if (ipvs
->sync_state
& IP_VS_STATE_BACKUP
) {
2608 d
[1].state
= IP_VS_STATE_BACKUP
;
2609 strlcpy(d
[1].mcast_ifn
, ipvs
->backup_mcast_ifn
,
2610 sizeof(d
[1].mcast_ifn
));
2611 d
[1].syncid
= ipvs
->backup_syncid
;
2613 if (copy_to_user(user
, &d
, sizeof(d
)) != 0)
2615 mutex_unlock(&ipvs
->sync_mutex
);
2619 if (mutex_lock_interruptible(&__ip_vs_mutex
))
2620 return -ERESTARTSYS
;
2623 case IP_VS_SO_GET_VERSION
:
2627 sprintf(buf
, "IP Virtual Server version %d.%d.%d (size=%d)",
2628 NVERSION(IP_VS_VERSION_CODE
), ip_vs_conn_tab_size
);
2629 if (copy_to_user(user
, buf
, strlen(buf
)+1) != 0) {
2633 *len
= strlen(buf
)+1;
2637 case IP_VS_SO_GET_INFO
:
2639 struct ip_vs_getinfo info
;
2640 info
.version
= IP_VS_VERSION_CODE
;
2641 info
.size
= ip_vs_conn_tab_size
;
2642 info
.num_services
= ipvs
->num_services
;
2643 if (copy_to_user(user
, &info
, sizeof(info
)) != 0)
2648 case IP_VS_SO_GET_SERVICES
:
2650 struct ip_vs_get_services
*get
;
2653 get
= (struct ip_vs_get_services
*)arg
;
2654 size
= sizeof(*get
) +
2655 sizeof(struct ip_vs_service_entry
) * get
->num_services
;
2657 pr_err("length: %u != %u\n", *len
, size
);
2661 ret
= __ip_vs_get_service_entries(net
, get
, user
);
2665 case IP_VS_SO_GET_SERVICE
:
2667 struct ip_vs_service_entry
*entry
;
2668 struct ip_vs_service
*svc
;
2669 union nf_inet_addr addr
;
2671 entry
= (struct ip_vs_service_entry
*)arg
;
2672 addr
.ip
= entry
->addr
;
2674 svc
= __ip_vs_svc_fwm_find(net
, AF_INET
, entry
->fwmark
);
2676 svc
= __ip_vs_service_find(net
, AF_INET
,
2677 entry
->protocol
, &addr
,
2680 ip_vs_copy_service(entry
, svc
);
2681 if (copy_to_user(user
, entry
, sizeof(*entry
)) != 0)
2688 case IP_VS_SO_GET_DESTS
:
2690 struct ip_vs_get_dests
*get
;
2693 get
= (struct ip_vs_get_dests
*)arg
;
2694 size
= sizeof(*get
) +
2695 sizeof(struct ip_vs_dest_entry
) * get
->num_dests
;
2697 pr_err("length: %u != %u\n", *len
, size
);
2701 ret
= __ip_vs_get_dest_entries(net
, get
, user
);
2705 case IP_VS_SO_GET_TIMEOUT
:
2707 struct ip_vs_timeout_user t
;
2709 __ip_vs_get_timeouts(net
, &t
);
2710 if (copy_to_user(user
, &t
, sizeof(t
)) != 0)
2720 mutex_unlock(&__ip_vs_mutex
);
2725 static struct nf_sockopt_ops ip_vs_sockopts
= {
2727 .set_optmin
= IP_VS_BASE_CTL
,
2728 .set_optmax
= IP_VS_SO_SET_MAX
+1,
2729 .set
= do_ip_vs_set_ctl
,
2730 .get_optmin
= IP_VS_BASE_CTL
,
2731 .get_optmax
= IP_VS_SO_GET_MAX
+1,
2732 .get
= do_ip_vs_get_ctl
,
2733 .owner
= THIS_MODULE
,
2737 * Generic Netlink interface
2740 /* IPVS genetlink family */
2741 static struct genl_family ip_vs_genl_family
= {
2742 .id
= GENL_ID_GENERATE
,
2744 .name
= IPVS_GENL_NAME
,
2745 .version
= IPVS_GENL_VERSION
,
2746 .maxattr
= IPVS_CMD_MAX
,
2747 .netnsok
= true, /* Make ipvsadm to work on netns */
2750 /* Policy used for first-level command attributes */
2751 static const struct nla_policy ip_vs_cmd_policy
[IPVS_CMD_ATTR_MAX
+ 1] = {
2752 [IPVS_CMD_ATTR_SERVICE
] = { .type
= NLA_NESTED
},
2753 [IPVS_CMD_ATTR_DEST
] = { .type
= NLA_NESTED
},
2754 [IPVS_CMD_ATTR_DAEMON
] = { .type
= NLA_NESTED
},
2755 [IPVS_CMD_ATTR_TIMEOUT_TCP
] = { .type
= NLA_U32
},
2756 [IPVS_CMD_ATTR_TIMEOUT_TCP_FIN
] = { .type
= NLA_U32
},
2757 [IPVS_CMD_ATTR_TIMEOUT_UDP
] = { .type
= NLA_U32
},
2760 /* Policy used for attributes in nested attribute IPVS_CMD_ATTR_DAEMON */
2761 static const struct nla_policy ip_vs_daemon_policy
[IPVS_DAEMON_ATTR_MAX
+ 1] = {
2762 [IPVS_DAEMON_ATTR_STATE
] = { .type
= NLA_U32
},
2763 [IPVS_DAEMON_ATTR_MCAST_IFN
] = { .type
= NLA_NUL_STRING
,
2764 .len
= IP_VS_IFNAME_MAXLEN
},
2765 [IPVS_DAEMON_ATTR_SYNC_ID
] = { .type
= NLA_U32
},
2768 /* Policy used for attributes in nested attribute IPVS_CMD_ATTR_SERVICE */
2769 static const struct nla_policy ip_vs_svc_policy
[IPVS_SVC_ATTR_MAX
+ 1] = {
2770 [IPVS_SVC_ATTR_AF
] = { .type
= NLA_U16
},
2771 [IPVS_SVC_ATTR_PROTOCOL
] = { .type
= NLA_U16
},
2772 [IPVS_SVC_ATTR_ADDR
] = { .type
= NLA_BINARY
,
2773 .len
= sizeof(union nf_inet_addr
) },
2774 [IPVS_SVC_ATTR_PORT
] = { .type
= NLA_U16
},
2775 [IPVS_SVC_ATTR_FWMARK
] = { .type
= NLA_U32
},
2776 [IPVS_SVC_ATTR_SCHED_NAME
] = { .type
= NLA_NUL_STRING
,
2777 .len
= IP_VS_SCHEDNAME_MAXLEN
},
2778 [IPVS_SVC_ATTR_PE_NAME
] = { .type
= NLA_NUL_STRING
,
2779 .len
= IP_VS_PENAME_MAXLEN
},
2780 [IPVS_SVC_ATTR_FLAGS
] = { .type
= NLA_BINARY
,
2781 .len
= sizeof(struct ip_vs_flags
) },
2782 [IPVS_SVC_ATTR_TIMEOUT
] = { .type
= NLA_U32
},
2783 [IPVS_SVC_ATTR_NETMASK
] = { .type
= NLA_U32
},
2784 [IPVS_SVC_ATTR_STATS
] = { .type
= NLA_NESTED
},
2787 /* Policy used for attributes in nested attribute IPVS_CMD_ATTR_DEST */
2788 static const struct nla_policy ip_vs_dest_policy
[IPVS_DEST_ATTR_MAX
+ 1] = {
2789 [IPVS_DEST_ATTR_ADDR
] = { .type
= NLA_BINARY
,
2790 .len
= sizeof(union nf_inet_addr
) },
2791 [IPVS_DEST_ATTR_PORT
] = { .type
= NLA_U16
},
2792 [IPVS_DEST_ATTR_FWD_METHOD
] = { .type
= NLA_U32
},
2793 [IPVS_DEST_ATTR_WEIGHT
] = { .type
= NLA_U32
},
2794 [IPVS_DEST_ATTR_U_THRESH
] = { .type
= NLA_U32
},
2795 [IPVS_DEST_ATTR_L_THRESH
] = { .type
= NLA_U32
},
2796 [IPVS_DEST_ATTR_ACTIVE_CONNS
] = { .type
= NLA_U32
},
2797 [IPVS_DEST_ATTR_INACT_CONNS
] = { .type
= NLA_U32
},
2798 [IPVS_DEST_ATTR_PERSIST_CONNS
] = { .type
= NLA_U32
},
2799 [IPVS_DEST_ATTR_STATS
] = { .type
= NLA_NESTED
},
2802 static int ip_vs_genl_fill_stats(struct sk_buff
*skb
, int container_type
,
2803 struct ip_vs_stats
*stats
)
2805 struct ip_vs_stats_user ustats
;
2806 struct nlattr
*nl_stats
= nla_nest_start(skb
, container_type
);
2810 ip_vs_copy_stats(&ustats
, stats
);
2812 if (nla_put_u32(skb
, IPVS_STATS_ATTR_CONNS
, ustats
.conns
) ||
2813 nla_put_u32(skb
, IPVS_STATS_ATTR_INPKTS
, ustats
.inpkts
) ||
2814 nla_put_u32(skb
, IPVS_STATS_ATTR_OUTPKTS
, ustats
.outpkts
) ||
2815 nla_put_u64(skb
, IPVS_STATS_ATTR_INBYTES
, ustats
.inbytes
) ||
2816 nla_put_u64(skb
, IPVS_STATS_ATTR_OUTBYTES
, ustats
.outbytes
) ||
2817 nla_put_u32(skb
, IPVS_STATS_ATTR_CPS
, ustats
.cps
) ||
2818 nla_put_u32(skb
, IPVS_STATS_ATTR_INPPS
, ustats
.inpps
) ||
2819 nla_put_u32(skb
, IPVS_STATS_ATTR_OUTPPS
, ustats
.outpps
) ||
2820 nla_put_u32(skb
, IPVS_STATS_ATTR_INBPS
, ustats
.inbps
) ||
2821 nla_put_u32(skb
, IPVS_STATS_ATTR_OUTBPS
, ustats
.outbps
))
2822 goto nla_put_failure
;
2823 nla_nest_end(skb
, nl_stats
);
2828 nla_nest_cancel(skb
, nl_stats
);
2832 static int ip_vs_genl_fill_service(struct sk_buff
*skb
,
2833 struct ip_vs_service
*svc
)
2835 struct nlattr
*nl_service
;
2836 struct ip_vs_flags flags
= { .flags
= svc
->flags
,
2839 nl_service
= nla_nest_start(skb
, IPVS_CMD_ATTR_SERVICE
);
2843 if (nla_put_u16(skb
, IPVS_SVC_ATTR_AF
, svc
->af
))
2844 goto nla_put_failure
;
2846 if (nla_put_u32(skb
, IPVS_SVC_ATTR_FWMARK
, svc
->fwmark
))
2847 goto nla_put_failure
;
2849 if (nla_put_u16(skb
, IPVS_SVC_ATTR_PROTOCOL
, svc
->protocol
) ||
2850 nla_put(skb
, IPVS_SVC_ATTR_ADDR
, sizeof(svc
->addr
), &svc
->addr
) ||
2851 nla_put_u16(skb
, IPVS_SVC_ATTR_PORT
, svc
->port
))
2852 goto nla_put_failure
;
2855 if (nla_put_string(skb
, IPVS_SVC_ATTR_SCHED_NAME
, svc
->scheduler
->name
) ||
2857 nla_put_string(skb
, IPVS_SVC_ATTR_PE_NAME
, svc
->pe
->name
)) ||
2858 nla_put(skb
, IPVS_SVC_ATTR_FLAGS
, sizeof(flags
), &flags
) ||
2859 nla_put_u32(skb
, IPVS_SVC_ATTR_TIMEOUT
, svc
->timeout
/ HZ
) ||
2860 nla_put_u32(skb
, IPVS_SVC_ATTR_NETMASK
, svc
->netmask
))
2861 goto nla_put_failure
;
2862 if (ip_vs_genl_fill_stats(skb
, IPVS_SVC_ATTR_STATS
, &svc
->stats
))
2863 goto nla_put_failure
;
2865 nla_nest_end(skb
, nl_service
);
2870 nla_nest_cancel(skb
, nl_service
);
2874 static int ip_vs_genl_dump_service(struct sk_buff
*skb
,
2875 struct ip_vs_service
*svc
,
2876 struct netlink_callback
*cb
)
2880 hdr
= genlmsg_put(skb
, NETLINK_CB(cb
->skb
).pid
, cb
->nlh
->nlmsg_seq
,
2881 &ip_vs_genl_family
, NLM_F_MULTI
,
2882 IPVS_CMD_NEW_SERVICE
);
2886 if (ip_vs_genl_fill_service(skb
, svc
) < 0)
2887 goto nla_put_failure
;
2889 return genlmsg_end(skb
, hdr
);
2892 genlmsg_cancel(skb
, hdr
);
2896 static int ip_vs_genl_dump_services(struct sk_buff
*skb
,
2897 struct netlink_callback
*cb
)
2900 int start
= cb
->args
[0];
2901 struct ip_vs_service
*svc
;
2902 struct net
*net
= skb_sknet(skb
);
2904 mutex_lock(&__ip_vs_mutex
);
2905 for (i
= 0; i
< IP_VS_SVC_TAB_SIZE
; i
++) {
2906 list_for_each_entry(svc
, &ip_vs_svc_table
[i
], s_list
) {
2907 if (++idx
<= start
|| !net_eq(svc
->net
, net
))
2909 if (ip_vs_genl_dump_service(skb
, svc
, cb
) < 0) {
2911 goto nla_put_failure
;
2916 for (i
= 0; i
< IP_VS_SVC_TAB_SIZE
; i
++) {
2917 list_for_each_entry(svc
, &ip_vs_svc_fwm_table
[i
], f_list
) {
2918 if (++idx
<= start
|| !net_eq(svc
->net
, net
))
2920 if (ip_vs_genl_dump_service(skb
, svc
, cb
) < 0) {
2922 goto nla_put_failure
;
2928 mutex_unlock(&__ip_vs_mutex
);
2934 static int ip_vs_genl_parse_service(struct net
*net
,
2935 struct ip_vs_service_user_kern
*usvc
,
2936 struct nlattr
*nla
, int full_entry
,
2937 struct ip_vs_service
**ret_svc
)
2939 struct nlattr
*attrs
[IPVS_SVC_ATTR_MAX
+ 1];
2940 struct nlattr
*nla_af
, *nla_port
, *nla_fwmark
, *nla_protocol
, *nla_addr
;
2941 struct ip_vs_service
*svc
;
2943 /* Parse mandatory identifying service fields first */
2945 nla_parse_nested(attrs
, IPVS_SVC_ATTR_MAX
, nla
, ip_vs_svc_policy
))
2948 nla_af
= attrs
[IPVS_SVC_ATTR_AF
];
2949 nla_protocol
= attrs
[IPVS_SVC_ATTR_PROTOCOL
];
2950 nla_addr
= attrs
[IPVS_SVC_ATTR_ADDR
];
2951 nla_port
= attrs
[IPVS_SVC_ATTR_PORT
];
2952 nla_fwmark
= attrs
[IPVS_SVC_ATTR_FWMARK
];
2954 if (!(nla_af
&& (nla_fwmark
|| (nla_port
&& nla_protocol
&& nla_addr
))))
2957 memset(usvc
, 0, sizeof(*usvc
));
2959 usvc
->af
= nla_get_u16(nla_af
);
2960 #ifdef CONFIG_IP_VS_IPV6
2961 if (usvc
->af
!= AF_INET
&& usvc
->af
!= AF_INET6
)
2963 if (usvc
->af
!= AF_INET
)
2965 return -EAFNOSUPPORT
;
2968 usvc
->protocol
= IPPROTO_TCP
;
2969 usvc
->fwmark
= nla_get_u32(nla_fwmark
);
2971 usvc
->protocol
= nla_get_u16(nla_protocol
);
2972 nla_memcpy(&usvc
->addr
, nla_addr
, sizeof(usvc
->addr
));
2973 usvc
->port
= nla_get_u16(nla_port
);
2978 svc
= __ip_vs_svc_fwm_find(net
, usvc
->af
, usvc
->fwmark
);
2980 svc
= __ip_vs_service_find(net
, usvc
->af
, usvc
->protocol
,
2981 &usvc
->addr
, usvc
->port
);
2984 /* If a full entry was requested, check for the additional fields */
2986 struct nlattr
*nla_sched
, *nla_flags
, *nla_pe
, *nla_timeout
,
2988 struct ip_vs_flags flags
;
2990 nla_sched
= attrs
[IPVS_SVC_ATTR_SCHED_NAME
];
2991 nla_pe
= attrs
[IPVS_SVC_ATTR_PE_NAME
];
2992 nla_flags
= attrs
[IPVS_SVC_ATTR_FLAGS
];
2993 nla_timeout
= attrs
[IPVS_SVC_ATTR_TIMEOUT
];
2994 nla_netmask
= attrs
[IPVS_SVC_ATTR_NETMASK
];
2996 if (!(nla_sched
&& nla_flags
&& nla_timeout
&& nla_netmask
))
2999 nla_memcpy(&flags
, nla_flags
, sizeof(flags
));
3001 /* prefill flags from service if it already exists */
3003 usvc
->flags
= svc
->flags
;
3005 /* set new flags from userland */
3006 usvc
->flags
= (usvc
->flags
& ~flags
.mask
) |
3007 (flags
.flags
& flags
.mask
);
3008 usvc
->sched_name
= nla_data(nla_sched
);
3009 usvc
->pe_name
= nla_pe
? nla_data(nla_pe
) : NULL
;
3010 usvc
->timeout
= nla_get_u32(nla_timeout
);
3011 usvc
->netmask
= nla_get_u32(nla_netmask
);
3017 static struct ip_vs_service
*ip_vs_genl_find_service(struct net
*net
,
3020 struct ip_vs_service_user_kern usvc
;
3021 struct ip_vs_service
*svc
;
3024 ret
= ip_vs_genl_parse_service(net
, &usvc
, nla
, 0, &svc
);
3025 return ret
? ERR_PTR(ret
) : svc
;
3028 static int ip_vs_genl_fill_dest(struct sk_buff
*skb
, struct ip_vs_dest
*dest
)
3030 struct nlattr
*nl_dest
;
3032 nl_dest
= nla_nest_start(skb
, IPVS_CMD_ATTR_DEST
);
3036 if (nla_put(skb
, IPVS_DEST_ATTR_ADDR
, sizeof(dest
->addr
), &dest
->addr
) ||
3037 nla_put_u16(skb
, IPVS_DEST_ATTR_PORT
, dest
->port
) ||
3038 nla_put_u32(skb
, IPVS_DEST_ATTR_FWD_METHOD
,
3039 (atomic_read(&dest
->conn_flags
) &
3040 IP_VS_CONN_F_FWD_MASK
)) ||
3041 nla_put_u32(skb
, IPVS_DEST_ATTR_WEIGHT
,
3042 atomic_read(&dest
->weight
)) ||
3043 nla_put_u32(skb
, IPVS_DEST_ATTR_U_THRESH
, dest
->u_threshold
) ||
3044 nla_put_u32(skb
, IPVS_DEST_ATTR_L_THRESH
, dest
->l_threshold
) ||
3045 nla_put_u32(skb
, IPVS_DEST_ATTR_ACTIVE_CONNS
,
3046 atomic_read(&dest
->activeconns
)) ||
3047 nla_put_u32(skb
, IPVS_DEST_ATTR_INACT_CONNS
,
3048 atomic_read(&dest
->inactconns
)) ||
3049 nla_put_u32(skb
, IPVS_DEST_ATTR_PERSIST_CONNS
,
3050 atomic_read(&dest
->persistconns
)))
3051 goto nla_put_failure
;
3052 if (ip_vs_genl_fill_stats(skb
, IPVS_DEST_ATTR_STATS
, &dest
->stats
))
3053 goto nla_put_failure
;
3055 nla_nest_end(skb
, nl_dest
);
3060 nla_nest_cancel(skb
, nl_dest
);
3064 static int ip_vs_genl_dump_dest(struct sk_buff
*skb
, struct ip_vs_dest
*dest
,
3065 struct netlink_callback
*cb
)
3069 hdr
= genlmsg_put(skb
, NETLINK_CB(cb
->skb
).pid
, cb
->nlh
->nlmsg_seq
,
3070 &ip_vs_genl_family
, NLM_F_MULTI
,
3075 if (ip_vs_genl_fill_dest(skb
, dest
) < 0)
3076 goto nla_put_failure
;
3078 return genlmsg_end(skb
, hdr
);
3081 genlmsg_cancel(skb
, hdr
);
3085 static int ip_vs_genl_dump_dests(struct sk_buff
*skb
,
3086 struct netlink_callback
*cb
)
3089 int start
= cb
->args
[0];
3090 struct ip_vs_service
*svc
;
3091 struct ip_vs_dest
*dest
;
3092 struct nlattr
*attrs
[IPVS_CMD_ATTR_MAX
+ 1];
3093 struct net
*net
= skb_sknet(skb
);
3095 mutex_lock(&__ip_vs_mutex
);
3097 /* Try to find the service for which to dump destinations */
3098 if (nlmsg_parse(cb
->nlh
, GENL_HDRLEN
, attrs
,
3099 IPVS_CMD_ATTR_MAX
, ip_vs_cmd_policy
))
3103 svc
= ip_vs_genl_find_service(net
, attrs
[IPVS_CMD_ATTR_SERVICE
]);
3104 if (IS_ERR(svc
) || svc
== NULL
)
3107 /* Dump the destinations */
3108 list_for_each_entry(dest
, &svc
->destinations
, n_list
) {
3111 if (ip_vs_genl_dump_dest(skb
, dest
, cb
) < 0) {
3113 goto nla_put_failure
;
3121 mutex_unlock(&__ip_vs_mutex
);
3126 static int ip_vs_genl_parse_dest(struct ip_vs_dest_user_kern
*udest
,
3127 struct nlattr
*nla
, int full_entry
)
3129 struct nlattr
*attrs
[IPVS_DEST_ATTR_MAX
+ 1];
3130 struct nlattr
*nla_addr
, *nla_port
;
3132 /* Parse mandatory identifying destination fields first */
3134 nla_parse_nested(attrs
, IPVS_DEST_ATTR_MAX
, nla
, ip_vs_dest_policy
))
3137 nla_addr
= attrs
[IPVS_DEST_ATTR_ADDR
];
3138 nla_port
= attrs
[IPVS_DEST_ATTR_PORT
];
3140 if (!(nla_addr
&& nla_port
))
3143 memset(udest
, 0, sizeof(*udest
));
3145 nla_memcpy(&udest
->addr
, nla_addr
, sizeof(udest
->addr
));
3146 udest
->port
= nla_get_u16(nla_port
);
3148 /* If a full entry was requested, check for the additional fields */
3150 struct nlattr
*nla_fwd
, *nla_weight
, *nla_u_thresh
,
3153 nla_fwd
= attrs
[IPVS_DEST_ATTR_FWD_METHOD
];
3154 nla_weight
= attrs
[IPVS_DEST_ATTR_WEIGHT
];
3155 nla_u_thresh
= attrs
[IPVS_DEST_ATTR_U_THRESH
];
3156 nla_l_thresh
= attrs
[IPVS_DEST_ATTR_L_THRESH
];
3158 if (!(nla_fwd
&& nla_weight
&& nla_u_thresh
&& nla_l_thresh
))
3161 udest
->conn_flags
= nla_get_u32(nla_fwd
)
3162 & IP_VS_CONN_F_FWD_MASK
;
3163 udest
->weight
= nla_get_u32(nla_weight
);
3164 udest
->u_threshold
= nla_get_u32(nla_u_thresh
);
3165 udest
->l_threshold
= nla_get_u32(nla_l_thresh
);
3171 static int ip_vs_genl_fill_daemon(struct sk_buff
*skb
, __be32 state
,
3172 const char *mcast_ifn
, __be32 syncid
)
3174 struct nlattr
*nl_daemon
;
3176 nl_daemon
= nla_nest_start(skb
, IPVS_CMD_ATTR_DAEMON
);
3180 if (nla_put_u32(skb
, IPVS_DAEMON_ATTR_STATE
, state
) ||
3181 nla_put_string(skb
, IPVS_DAEMON_ATTR_MCAST_IFN
, mcast_ifn
) ||
3182 nla_put_u32(skb
, IPVS_DAEMON_ATTR_SYNC_ID
, syncid
))
3183 goto nla_put_failure
;
3184 nla_nest_end(skb
, nl_daemon
);
3189 nla_nest_cancel(skb
, nl_daemon
);
3193 static int ip_vs_genl_dump_daemon(struct sk_buff
*skb
, __be32 state
,
3194 const char *mcast_ifn
, __be32 syncid
,
3195 struct netlink_callback
*cb
)
3198 hdr
= genlmsg_put(skb
, NETLINK_CB(cb
->skb
).pid
, cb
->nlh
->nlmsg_seq
,
3199 &ip_vs_genl_family
, NLM_F_MULTI
,
3200 IPVS_CMD_NEW_DAEMON
);
3204 if (ip_vs_genl_fill_daemon(skb
, state
, mcast_ifn
, syncid
))
3205 goto nla_put_failure
;
3207 return genlmsg_end(skb
, hdr
);
3210 genlmsg_cancel(skb
, hdr
);
3214 static int ip_vs_genl_dump_daemons(struct sk_buff
*skb
,
3215 struct netlink_callback
*cb
)
3217 struct net
*net
= skb_sknet(skb
);
3218 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3220 mutex_lock(&ipvs
->sync_mutex
);
3221 if ((ipvs
->sync_state
& IP_VS_STATE_MASTER
) && !cb
->args
[0]) {
3222 if (ip_vs_genl_dump_daemon(skb
, IP_VS_STATE_MASTER
,
3223 ipvs
->master_mcast_ifn
,
3224 ipvs
->master_syncid
, cb
) < 0)
3225 goto nla_put_failure
;
3230 if ((ipvs
->sync_state
& IP_VS_STATE_BACKUP
) && !cb
->args
[1]) {
3231 if (ip_vs_genl_dump_daemon(skb
, IP_VS_STATE_BACKUP
,
3232 ipvs
->backup_mcast_ifn
,
3233 ipvs
->backup_syncid
, cb
) < 0)
3234 goto nla_put_failure
;
3240 mutex_unlock(&ipvs
->sync_mutex
);
3245 static int ip_vs_genl_new_daemon(struct net
*net
, struct nlattr
**attrs
)
3247 if (!(attrs
[IPVS_DAEMON_ATTR_STATE
] &&
3248 attrs
[IPVS_DAEMON_ATTR_MCAST_IFN
] &&
3249 attrs
[IPVS_DAEMON_ATTR_SYNC_ID
]))
3252 return start_sync_thread(net
,
3253 nla_get_u32(attrs
[IPVS_DAEMON_ATTR_STATE
]),
3254 nla_data(attrs
[IPVS_DAEMON_ATTR_MCAST_IFN
]),
3255 nla_get_u32(attrs
[IPVS_DAEMON_ATTR_SYNC_ID
]));
3258 static int ip_vs_genl_del_daemon(struct net
*net
, struct nlattr
**attrs
)
3260 if (!attrs
[IPVS_DAEMON_ATTR_STATE
])
3263 return stop_sync_thread(net
,
3264 nla_get_u32(attrs
[IPVS_DAEMON_ATTR_STATE
]));
3267 static int ip_vs_genl_set_config(struct net
*net
, struct nlattr
**attrs
)
3269 struct ip_vs_timeout_user t
;
3271 __ip_vs_get_timeouts(net
, &t
);
3273 if (attrs
[IPVS_CMD_ATTR_TIMEOUT_TCP
])
3274 t
.tcp_timeout
= nla_get_u32(attrs
[IPVS_CMD_ATTR_TIMEOUT_TCP
]);
3276 if (attrs
[IPVS_CMD_ATTR_TIMEOUT_TCP_FIN
])
3278 nla_get_u32(attrs
[IPVS_CMD_ATTR_TIMEOUT_TCP_FIN
]);
3280 if (attrs
[IPVS_CMD_ATTR_TIMEOUT_UDP
])
3281 t
.udp_timeout
= nla_get_u32(attrs
[IPVS_CMD_ATTR_TIMEOUT_UDP
]);
3283 return ip_vs_set_timeout(net
, &t
);
3286 static int ip_vs_genl_set_daemon(struct sk_buff
*skb
, struct genl_info
*info
)
3290 struct netns_ipvs
*ipvs
;
3292 net
= skb_sknet(skb
);
3293 ipvs
= net_ipvs(net
);
3294 cmd
= info
->genlhdr
->cmd
;
3296 if (cmd
== IPVS_CMD_NEW_DAEMON
|| cmd
== IPVS_CMD_DEL_DAEMON
) {
3297 struct nlattr
*daemon_attrs
[IPVS_DAEMON_ATTR_MAX
+ 1];
3299 mutex_lock(&ipvs
->sync_mutex
);
3300 if (!info
->attrs
[IPVS_CMD_ATTR_DAEMON
] ||
3301 nla_parse_nested(daemon_attrs
, IPVS_DAEMON_ATTR_MAX
,
3302 info
->attrs
[IPVS_CMD_ATTR_DAEMON
],
3303 ip_vs_daemon_policy
)) {
3308 if (cmd
== IPVS_CMD_NEW_DAEMON
)
3309 ret
= ip_vs_genl_new_daemon(net
, daemon_attrs
);
3311 ret
= ip_vs_genl_del_daemon(net
, daemon_attrs
);
3313 mutex_unlock(&ipvs
->sync_mutex
);
3318 static int ip_vs_genl_set_cmd(struct sk_buff
*skb
, struct genl_info
*info
)
3320 struct ip_vs_service
*svc
= NULL
;
3321 struct ip_vs_service_user_kern usvc
;
3322 struct ip_vs_dest_user_kern udest
;
3324 int need_full_svc
= 0, need_full_dest
= 0;
3327 net
= skb_sknet(skb
);
3328 cmd
= info
->genlhdr
->cmd
;
3330 mutex_lock(&__ip_vs_mutex
);
3332 if (cmd
== IPVS_CMD_FLUSH
) {
3333 ret
= ip_vs_flush(net
);
3335 } else if (cmd
== IPVS_CMD_SET_CONFIG
) {
3336 ret
= ip_vs_genl_set_config(net
, info
->attrs
);
3338 } else if (cmd
== IPVS_CMD_ZERO
&&
3339 !info
->attrs
[IPVS_CMD_ATTR_SERVICE
]) {
3340 ret
= ip_vs_zero_all(net
);
3344 /* All following commands require a service argument, so check if we
3345 * received a valid one. We need a full service specification when
3346 * adding / editing a service. Only identifying members otherwise. */
3347 if (cmd
== IPVS_CMD_NEW_SERVICE
|| cmd
== IPVS_CMD_SET_SERVICE
)
3350 ret
= ip_vs_genl_parse_service(net
, &usvc
,
3351 info
->attrs
[IPVS_CMD_ATTR_SERVICE
],
3352 need_full_svc
, &svc
);
3356 /* Unless we're adding a new service, the service must already exist */
3357 if ((cmd
!= IPVS_CMD_NEW_SERVICE
) && (svc
== NULL
)) {
3362 /* Destination commands require a valid destination argument. For
3363 * adding / editing a destination, we need a full destination
3365 if (cmd
== IPVS_CMD_NEW_DEST
|| cmd
== IPVS_CMD_SET_DEST
||
3366 cmd
== IPVS_CMD_DEL_DEST
) {
3367 if (cmd
!= IPVS_CMD_DEL_DEST
)
3370 ret
= ip_vs_genl_parse_dest(&udest
,
3371 info
->attrs
[IPVS_CMD_ATTR_DEST
],
3378 case IPVS_CMD_NEW_SERVICE
:
3380 ret
= ip_vs_add_service(net
, &usvc
, &svc
);
3384 case IPVS_CMD_SET_SERVICE
:
3385 ret
= ip_vs_edit_service(svc
, &usvc
);
3387 case IPVS_CMD_DEL_SERVICE
:
3388 ret
= ip_vs_del_service(svc
);
3389 /* do not use svc, it can be freed */
3391 case IPVS_CMD_NEW_DEST
:
3392 ret
= ip_vs_add_dest(svc
, &udest
);
3394 case IPVS_CMD_SET_DEST
:
3395 ret
= ip_vs_edit_dest(svc
, &udest
);
3397 case IPVS_CMD_DEL_DEST
:
3398 ret
= ip_vs_del_dest(svc
, &udest
);
3401 ret
= ip_vs_zero_service(svc
);
3408 mutex_unlock(&__ip_vs_mutex
);
3413 static int ip_vs_genl_get_cmd(struct sk_buff
*skb
, struct genl_info
*info
)
3415 struct sk_buff
*msg
;
3417 int ret
, cmd
, reply_cmd
;
3420 net
= skb_sknet(skb
);
3421 cmd
= info
->genlhdr
->cmd
;
3423 if (cmd
== IPVS_CMD_GET_SERVICE
)
3424 reply_cmd
= IPVS_CMD_NEW_SERVICE
;
3425 else if (cmd
== IPVS_CMD_GET_INFO
)
3426 reply_cmd
= IPVS_CMD_SET_INFO
;
3427 else if (cmd
== IPVS_CMD_GET_CONFIG
)
3428 reply_cmd
= IPVS_CMD_SET_CONFIG
;
3430 pr_err("unknown Generic Netlink command\n");
3434 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_KERNEL
);
3438 mutex_lock(&__ip_vs_mutex
);
3440 reply
= genlmsg_put_reply(msg
, info
, &ip_vs_genl_family
, 0, reply_cmd
);
3442 goto nla_put_failure
;
3445 case IPVS_CMD_GET_SERVICE
:
3447 struct ip_vs_service
*svc
;
3449 svc
= ip_vs_genl_find_service(net
,
3450 info
->attrs
[IPVS_CMD_ATTR_SERVICE
]);
3455 ret
= ip_vs_genl_fill_service(msg
, svc
);
3457 goto nla_put_failure
;
3466 case IPVS_CMD_GET_CONFIG
:
3468 struct ip_vs_timeout_user t
;
3470 __ip_vs_get_timeouts(net
, &t
);
3471 #ifdef CONFIG_IP_VS_PROTO_TCP
3472 if (nla_put_u32(msg
, IPVS_CMD_ATTR_TIMEOUT_TCP
,
3474 nla_put_u32(msg
, IPVS_CMD_ATTR_TIMEOUT_TCP_FIN
,
3476 goto nla_put_failure
;
3478 #ifdef CONFIG_IP_VS_PROTO_UDP
3479 if (nla_put_u32(msg
, IPVS_CMD_ATTR_TIMEOUT_UDP
, t
.udp_timeout
))
3480 goto nla_put_failure
;
3486 case IPVS_CMD_GET_INFO
:
3487 if (nla_put_u32(msg
, IPVS_INFO_ATTR_VERSION
,
3488 IP_VS_VERSION_CODE
) ||
3489 nla_put_u32(msg
, IPVS_INFO_ATTR_CONN_TAB_SIZE
,
3490 ip_vs_conn_tab_size
))
3491 goto nla_put_failure
;
3495 genlmsg_end(msg
, reply
);
3496 ret
= genlmsg_reply(msg
, info
);
3500 pr_err("not enough space in Netlink message\n");
3506 mutex_unlock(&__ip_vs_mutex
);
3512 static struct genl_ops ip_vs_genl_ops
[] __read_mostly
= {
3514 .cmd
= IPVS_CMD_NEW_SERVICE
,
3515 .flags
= GENL_ADMIN_PERM
,
3516 .policy
= ip_vs_cmd_policy
,
3517 .doit
= ip_vs_genl_set_cmd
,
3520 .cmd
= IPVS_CMD_SET_SERVICE
,
3521 .flags
= GENL_ADMIN_PERM
,
3522 .policy
= ip_vs_cmd_policy
,
3523 .doit
= ip_vs_genl_set_cmd
,
3526 .cmd
= IPVS_CMD_DEL_SERVICE
,
3527 .flags
= GENL_ADMIN_PERM
,
3528 .policy
= ip_vs_cmd_policy
,
3529 .doit
= ip_vs_genl_set_cmd
,
3532 .cmd
= IPVS_CMD_GET_SERVICE
,
3533 .flags
= GENL_ADMIN_PERM
,
3534 .doit
= ip_vs_genl_get_cmd
,
3535 .dumpit
= ip_vs_genl_dump_services
,
3536 .policy
= ip_vs_cmd_policy
,
3539 .cmd
= IPVS_CMD_NEW_DEST
,
3540 .flags
= GENL_ADMIN_PERM
,
3541 .policy
= ip_vs_cmd_policy
,
3542 .doit
= ip_vs_genl_set_cmd
,
3545 .cmd
= IPVS_CMD_SET_DEST
,
3546 .flags
= GENL_ADMIN_PERM
,
3547 .policy
= ip_vs_cmd_policy
,
3548 .doit
= ip_vs_genl_set_cmd
,
3551 .cmd
= IPVS_CMD_DEL_DEST
,
3552 .flags
= GENL_ADMIN_PERM
,
3553 .policy
= ip_vs_cmd_policy
,
3554 .doit
= ip_vs_genl_set_cmd
,
3557 .cmd
= IPVS_CMD_GET_DEST
,
3558 .flags
= GENL_ADMIN_PERM
,
3559 .policy
= ip_vs_cmd_policy
,
3560 .dumpit
= ip_vs_genl_dump_dests
,
3563 .cmd
= IPVS_CMD_NEW_DAEMON
,
3564 .flags
= GENL_ADMIN_PERM
,
3565 .policy
= ip_vs_cmd_policy
,
3566 .doit
= ip_vs_genl_set_daemon
,
3569 .cmd
= IPVS_CMD_DEL_DAEMON
,
3570 .flags
= GENL_ADMIN_PERM
,
3571 .policy
= ip_vs_cmd_policy
,
3572 .doit
= ip_vs_genl_set_daemon
,
3575 .cmd
= IPVS_CMD_GET_DAEMON
,
3576 .flags
= GENL_ADMIN_PERM
,
3577 .dumpit
= ip_vs_genl_dump_daemons
,
3580 .cmd
= IPVS_CMD_SET_CONFIG
,
3581 .flags
= GENL_ADMIN_PERM
,
3582 .policy
= ip_vs_cmd_policy
,
3583 .doit
= ip_vs_genl_set_cmd
,
3586 .cmd
= IPVS_CMD_GET_CONFIG
,
3587 .flags
= GENL_ADMIN_PERM
,
3588 .doit
= ip_vs_genl_get_cmd
,
3591 .cmd
= IPVS_CMD_GET_INFO
,
3592 .flags
= GENL_ADMIN_PERM
,
3593 .doit
= ip_vs_genl_get_cmd
,
3596 .cmd
= IPVS_CMD_ZERO
,
3597 .flags
= GENL_ADMIN_PERM
,
3598 .policy
= ip_vs_cmd_policy
,
3599 .doit
= ip_vs_genl_set_cmd
,
3602 .cmd
= IPVS_CMD_FLUSH
,
3603 .flags
= GENL_ADMIN_PERM
,
3604 .doit
= ip_vs_genl_set_cmd
,
3608 static int __init
ip_vs_genl_register(void)
3610 return genl_register_family_with_ops(&ip_vs_genl_family
,
3611 ip_vs_genl_ops
, ARRAY_SIZE(ip_vs_genl_ops
));
3614 static void ip_vs_genl_unregister(void)
3616 genl_unregister_family(&ip_vs_genl_family
);
3619 /* End of Generic Netlink interface definitions */
3622 * per netns intit/exit func.
3624 #ifdef CONFIG_SYSCTL
3625 int __net_init
ip_vs_control_net_init_sysctl(struct net
*net
)
3628 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3629 struct ctl_table
*tbl
;
3631 atomic_set(&ipvs
->dropentry
, 0);
3632 spin_lock_init(&ipvs
->dropentry_lock
);
3633 spin_lock_init(&ipvs
->droppacket_lock
);
3634 spin_lock_init(&ipvs
->securetcp_lock
);
3636 if (!net_eq(net
, &init_net
)) {
3637 tbl
= kmemdup(vs_vars
, sizeof(vs_vars
), GFP_KERNEL
);
3642 /* Initialize sysctl defaults */
3644 ipvs
->sysctl_amemthresh
= 1024;
3645 tbl
[idx
++].data
= &ipvs
->sysctl_amemthresh
;
3646 ipvs
->sysctl_am_droprate
= 10;
3647 tbl
[idx
++].data
= &ipvs
->sysctl_am_droprate
;
3648 tbl
[idx
++].data
= &ipvs
->sysctl_drop_entry
;
3649 tbl
[idx
++].data
= &ipvs
->sysctl_drop_packet
;
3650 #ifdef CONFIG_IP_VS_NFCT
3651 tbl
[idx
++].data
= &ipvs
->sysctl_conntrack
;
3653 tbl
[idx
++].data
= &ipvs
->sysctl_secure_tcp
;
3654 ipvs
->sysctl_snat_reroute
= 1;
3655 tbl
[idx
++].data
= &ipvs
->sysctl_snat_reroute
;
3656 ipvs
->sysctl_sync_ver
= 1;
3657 tbl
[idx
++].data
= &ipvs
->sysctl_sync_ver
;
3658 tbl
[idx
++].data
= &ipvs
->sysctl_cache_bypass
;
3659 tbl
[idx
++].data
= &ipvs
->sysctl_expire_nodest_conn
;
3660 tbl
[idx
++].data
= &ipvs
->sysctl_expire_quiescent_template
;
3661 ipvs
->sysctl_sync_threshold
[0] = DEFAULT_SYNC_THRESHOLD
;
3662 ipvs
->sysctl_sync_threshold
[1] = DEFAULT_SYNC_PERIOD
;
3663 tbl
[idx
].data
= &ipvs
->sysctl_sync_threshold
;
3664 tbl
[idx
++].maxlen
= sizeof(ipvs
->sysctl_sync_threshold
);
3665 tbl
[idx
++].data
= &ipvs
->sysctl_nat_icmp_send
;
3668 ipvs
->sysctl_hdr
= register_net_sysctl(net
, "net/ipv4/vs", tbl
);
3669 if (ipvs
->sysctl_hdr
== NULL
) {
3670 if (!net_eq(net
, &init_net
))
3674 ip_vs_start_estimator(net
, &ipvs
->tot_stats
);
3675 ipvs
->sysctl_tbl
= tbl
;
3676 /* Schedule defense work */
3677 INIT_DELAYED_WORK(&ipvs
->defense_work
, defense_work_handler
);
3678 schedule_delayed_work(&ipvs
->defense_work
, DEFENSE_TIMER_PERIOD
);
3683 void __net_init
ip_vs_control_net_cleanup_sysctl(struct net
*net
)
3685 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3687 cancel_delayed_work_sync(&ipvs
->defense_work
);
3688 cancel_work_sync(&ipvs
->defense_work
.work
);
3689 unregister_net_sysctl_table(ipvs
->sysctl_hdr
);
3694 int __net_init
ip_vs_control_net_init_sysctl(struct net
*net
) { return 0; }
3695 void __net_init
ip_vs_control_net_cleanup_sysctl(struct net
*net
) { }
3699 static struct notifier_block ip_vs_dst_notifier
= {
3700 .notifier_call
= ip_vs_dst_event
,
3703 int __net_init
ip_vs_control_net_init(struct net
*net
)
3706 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3708 rwlock_init(&ipvs
->rs_lock
);
3710 /* Initialize rs_table */
3711 for (idx
= 0; idx
< IP_VS_RTAB_SIZE
; idx
++)
3712 INIT_LIST_HEAD(&ipvs
->rs_table
[idx
]);
3714 INIT_LIST_HEAD(&ipvs
->dest_trash
);
3715 atomic_set(&ipvs
->ftpsvc_counter
, 0);
3716 atomic_set(&ipvs
->nullsvc_counter
, 0);
3719 ipvs
->tot_stats
.cpustats
= alloc_percpu(struct ip_vs_cpu_stats
);
3720 if (!ipvs
->tot_stats
.cpustats
)
3723 spin_lock_init(&ipvs
->tot_stats
.lock
);
3725 proc_net_fops_create(net
, "ip_vs", 0, &ip_vs_info_fops
);
3726 proc_net_fops_create(net
, "ip_vs_stats", 0, &ip_vs_stats_fops
);
3727 proc_net_fops_create(net
, "ip_vs_stats_percpu", 0,
3728 &ip_vs_stats_percpu_fops
);
3730 if (ip_vs_control_net_init_sysctl(net
))
3736 free_percpu(ipvs
->tot_stats
.cpustats
);
3740 void __net_exit
ip_vs_control_net_cleanup(struct net
*net
)
3742 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3744 ip_vs_trash_cleanup(net
);
3745 ip_vs_stop_estimator(net
, &ipvs
->tot_stats
);
3746 ip_vs_control_net_cleanup_sysctl(net
);
3747 proc_net_remove(net
, "ip_vs_stats_percpu");
3748 proc_net_remove(net
, "ip_vs_stats");
3749 proc_net_remove(net
, "ip_vs");
3750 free_percpu(ipvs
->tot_stats
.cpustats
);
3753 int __init
ip_vs_control_init(void)
3760 /* Initialize svc_table, ip_vs_svc_fwm_table, rs_table */
3761 for(idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
3762 INIT_LIST_HEAD(&ip_vs_svc_table
[idx
]);
3763 INIT_LIST_HEAD(&ip_vs_svc_fwm_table
[idx
]);
3766 smp_wmb(); /* Do we really need it now ? */
3768 ret
= nf_register_sockopt(&ip_vs_sockopts
);
3770 pr_err("cannot register sockopt.\n");
3774 ret
= ip_vs_genl_register();
3776 pr_err("cannot register Generic Netlink interface.\n");
3780 ret
= register_netdevice_notifier(&ip_vs_dst_notifier
);
3788 ip_vs_genl_unregister();
3790 nf_unregister_sockopt(&ip_vs_sockopts
);
3796 void ip_vs_control_cleanup(void)
3799 unregister_netdevice_notifier(&ip_vs_dst_notifier
);
3800 ip_vs_genl_unregister();
3801 nf_unregister_sockopt(&ip_vs_sockopts
);