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 bool __ip_vs_addr_is_local_v6(struct net
*net
,
80 const struct in6_addr
*addr
)
85 struct dst_entry
*dst
= ip6_route_output(net
, NULL
, &fl6
);
88 is_local
= !dst
->error
&& dst
->dev
&& (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 netns_ipvs
*ipvs
= net_ipvs(net
);
1525 struct ip_vs_service
*svc
;
1526 struct ip_vs_dest
*dest
;
1529 if (event
!= NETDEV_UNREGISTER
|| !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 list_for_each_entry(svc
, &ip_vs_svc_table
[idx
], s_list
) {
1536 if (net_eq(svc
->net
, net
)) {
1537 list_for_each_entry(dest
, &svc
->destinations
,
1539 __ip_vs_dev_reset(dest
, dev
);
1544 list_for_each_entry(svc
, &ip_vs_svc_fwm_table
[idx
], f_list
) {
1545 if (net_eq(svc
->net
, net
)) {
1546 list_for_each_entry(dest
, &svc
->destinations
,
1548 __ip_vs_dev_reset(dest
, dev
);
1555 list_for_each_entry(dest
, &ipvs
->dest_trash
, n_list
) {
1556 __ip_vs_dev_reset(dest
, dev
);
1558 mutex_unlock(&__ip_vs_mutex
);
1564 * Zero counters in a service or all services
1566 static int ip_vs_zero_service(struct ip_vs_service
*svc
)
1568 struct ip_vs_dest
*dest
;
1570 write_lock_bh(&__ip_vs_svc_lock
);
1571 list_for_each_entry(dest
, &svc
->destinations
, n_list
) {
1572 ip_vs_zero_stats(&dest
->stats
);
1574 ip_vs_zero_stats(&svc
->stats
);
1575 write_unlock_bh(&__ip_vs_svc_lock
);
1579 static int ip_vs_zero_all(struct net
*net
)
1582 struct ip_vs_service
*svc
;
1584 for(idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1585 list_for_each_entry(svc
, &ip_vs_svc_table
[idx
], s_list
) {
1586 if (net_eq(svc
->net
, net
))
1587 ip_vs_zero_service(svc
);
1591 for(idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1592 list_for_each_entry(svc
, &ip_vs_svc_fwm_table
[idx
], f_list
) {
1593 if (net_eq(svc
->net
, net
))
1594 ip_vs_zero_service(svc
);
1598 ip_vs_zero_stats(&net_ipvs(net
)->tot_stats
);
1602 #ifdef CONFIG_SYSCTL
1605 static int three
= 3;
1608 proc_do_defense_mode(ctl_table
*table
, int write
,
1609 void __user
*buffer
, size_t *lenp
, loff_t
*ppos
)
1611 struct net
*net
= current
->nsproxy
->net_ns
;
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(net_ipvs(net
));
1629 proc_do_sync_threshold(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(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(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_qlen_max",
1749 .maxlen
= sizeof(int),
1751 .proc_handler
= proc_dointvec
,
1754 .procname
= "sync_sock_size",
1755 .maxlen
= sizeof(int),
1757 .proc_handler
= proc_dointvec
,
1760 .procname
= "cache_bypass",
1761 .maxlen
= sizeof(int),
1763 .proc_handler
= proc_dointvec
,
1766 .procname
= "expire_nodest_conn",
1767 .maxlen
= sizeof(int),
1769 .proc_handler
= proc_dointvec
,
1772 .procname
= "expire_quiescent_template",
1773 .maxlen
= sizeof(int),
1775 .proc_handler
= proc_dointvec
,
1778 .procname
= "sync_threshold",
1780 sizeof(((struct netns_ipvs
*)0)->sysctl_sync_threshold
),
1782 .proc_handler
= proc_do_sync_threshold
,
1785 .procname
= "sync_refresh_period",
1786 .maxlen
= sizeof(int),
1788 .proc_handler
= proc_dointvec_jiffies
,
1791 .procname
= "sync_retries",
1792 .maxlen
= sizeof(int),
1794 .proc_handler
= proc_dointvec_minmax
,
1799 .procname
= "nat_icmp_send",
1800 .maxlen
= sizeof(int),
1802 .proc_handler
= proc_dointvec
,
1805 .procname
= "pmtu_disc",
1806 .maxlen
= sizeof(int),
1808 .proc_handler
= proc_dointvec
,
1810 #ifdef CONFIG_IP_VS_DEBUG
1812 .procname
= "debug_level",
1813 .data
= &sysctl_ip_vs_debug_level
,
1814 .maxlen
= sizeof(int),
1816 .proc_handler
= proc_dointvec
,
1821 .procname
= "timeout_established",
1822 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_ESTABLISHED
],
1823 .maxlen
= sizeof(int),
1825 .proc_handler
= proc_dointvec_jiffies
,
1828 .procname
= "timeout_synsent",
1829 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_SYN_SENT
],
1830 .maxlen
= sizeof(int),
1832 .proc_handler
= proc_dointvec_jiffies
,
1835 .procname
= "timeout_synrecv",
1836 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_SYN_RECV
],
1837 .maxlen
= sizeof(int),
1839 .proc_handler
= proc_dointvec_jiffies
,
1842 .procname
= "timeout_finwait",
1843 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_FIN_WAIT
],
1844 .maxlen
= sizeof(int),
1846 .proc_handler
= proc_dointvec_jiffies
,
1849 .procname
= "timeout_timewait",
1850 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_TIME_WAIT
],
1851 .maxlen
= sizeof(int),
1853 .proc_handler
= proc_dointvec_jiffies
,
1856 .procname
= "timeout_close",
1857 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_CLOSE
],
1858 .maxlen
= sizeof(int),
1860 .proc_handler
= proc_dointvec_jiffies
,
1863 .procname
= "timeout_closewait",
1864 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_CLOSE_WAIT
],
1865 .maxlen
= sizeof(int),
1867 .proc_handler
= proc_dointvec_jiffies
,
1870 .procname
= "timeout_lastack",
1871 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_LAST_ACK
],
1872 .maxlen
= sizeof(int),
1874 .proc_handler
= proc_dointvec_jiffies
,
1877 .procname
= "timeout_listen",
1878 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_LISTEN
],
1879 .maxlen
= sizeof(int),
1881 .proc_handler
= proc_dointvec_jiffies
,
1884 .procname
= "timeout_synack",
1885 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_SYNACK
],
1886 .maxlen
= sizeof(int),
1888 .proc_handler
= proc_dointvec_jiffies
,
1891 .procname
= "timeout_udp",
1892 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_UDP
],
1893 .maxlen
= sizeof(int),
1895 .proc_handler
= proc_dointvec_jiffies
,
1898 .procname
= "timeout_icmp",
1899 .data
= &vs_timeout_table_dos
.timeout
[IP_VS_S_ICMP
],
1900 .maxlen
= sizeof(int),
1902 .proc_handler
= proc_dointvec_jiffies
,
1910 #ifdef CONFIG_PROC_FS
1913 struct seq_net_private p
; /* Do not move this, netns depends upon it*/
1914 struct list_head
*table
;
1919 * Write the contents of the VS rule table to a PROCfs file.
1920 * (It is kept just for backward compatibility)
1922 static inline const char *ip_vs_fwd_name(unsigned int flags
)
1924 switch (flags
& IP_VS_CONN_F_FWD_MASK
) {
1925 case IP_VS_CONN_F_LOCALNODE
:
1927 case IP_VS_CONN_F_TUNNEL
:
1929 case IP_VS_CONN_F_DROUTE
:
1937 /* Get the Nth entry in the two lists */
1938 static struct ip_vs_service
*ip_vs_info_array(struct seq_file
*seq
, loff_t pos
)
1940 struct net
*net
= seq_file_net(seq
);
1941 struct ip_vs_iter
*iter
= seq
->private;
1943 struct ip_vs_service
*svc
;
1945 /* look in hash by protocol */
1946 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1947 list_for_each_entry(svc
, &ip_vs_svc_table
[idx
], s_list
) {
1948 if (net_eq(svc
->net
, net
) && pos
-- == 0) {
1949 iter
->table
= ip_vs_svc_table
;
1956 /* keep looking in fwmark */
1957 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
1958 list_for_each_entry(svc
, &ip_vs_svc_fwm_table
[idx
], f_list
) {
1959 if (net_eq(svc
->net
, net
) && pos
-- == 0) {
1960 iter
->table
= ip_vs_svc_fwm_table
;
1970 static void *ip_vs_info_seq_start(struct seq_file
*seq
, loff_t
*pos
)
1971 __acquires(__ip_vs_svc_lock
)
1974 read_lock_bh(&__ip_vs_svc_lock
);
1975 return *pos
? ip_vs_info_array(seq
, *pos
- 1) : SEQ_START_TOKEN
;
1979 static void *ip_vs_info_seq_next(struct seq_file
*seq
, void *v
, loff_t
*pos
)
1981 struct list_head
*e
;
1982 struct ip_vs_iter
*iter
;
1983 struct ip_vs_service
*svc
;
1986 if (v
== SEQ_START_TOKEN
)
1987 return ip_vs_info_array(seq
,0);
1990 iter
= seq
->private;
1992 if (iter
->table
== ip_vs_svc_table
) {
1993 /* next service in table hashed by protocol */
1994 if ((e
= svc
->s_list
.next
) != &ip_vs_svc_table
[iter
->bucket
])
1995 return list_entry(e
, struct ip_vs_service
, s_list
);
1998 while (++iter
->bucket
< IP_VS_SVC_TAB_SIZE
) {
1999 list_for_each_entry(svc
,&ip_vs_svc_table
[iter
->bucket
],
2005 iter
->table
= ip_vs_svc_fwm_table
;
2010 /* next service in hashed by fwmark */
2011 if ((e
= svc
->f_list
.next
) != &ip_vs_svc_fwm_table
[iter
->bucket
])
2012 return list_entry(e
, struct ip_vs_service
, f_list
);
2015 while (++iter
->bucket
< IP_VS_SVC_TAB_SIZE
) {
2016 list_for_each_entry(svc
, &ip_vs_svc_fwm_table
[iter
->bucket
],
2024 static void ip_vs_info_seq_stop(struct seq_file
*seq
, void *v
)
2025 __releases(__ip_vs_svc_lock
)
2027 read_unlock_bh(&__ip_vs_svc_lock
);
2031 static int ip_vs_info_seq_show(struct seq_file
*seq
, void *v
)
2033 if (v
== SEQ_START_TOKEN
) {
2035 "IP Virtual Server version %d.%d.%d (size=%d)\n",
2036 NVERSION(IP_VS_VERSION_CODE
), ip_vs_conn_tab_size
);
2038 "Prot LocalAddress:Port Scheduler Flags\n");
2040 " -> RemoteAddress:Port Forward Weight ActiveConn InActConn\n");
2042 const struct ip_vs_service
*svc
= v
;
2043 const struct ip_vs_iter
*iter
= seq
->private;
2044 const struct ip_vs_dest
*dest
;
2046 if (iter
->table
== ip_vs_svc_table
) {
2047 #ifdef CONFIG_IP_VS_IPV6
2048 if (svc
->af
== AF_INET6
)
2049 seq_printf(seq
, "%s [%pI6]:%04X %s ",
2050 ip_vs_proto_name(svc
->protocol
),
2053 svc
->scheduler
->name
);
2056 seq_printf(seq
, "%s %08X:%04X %s %s ",
2057 ip_vs_proto_name(svc
->protocol
),
2058 ntohl(svc
->addr
.ip
),
2060 svc
->scheduler
->name
,
2061 (svc
->flags
& IP_VS_SVC_F_ONEPACKET
)?"ops ":"");
2063 seq_printf(seq
, "FWM %08X %s %s",
2064 svc
->fwmark
, svc
->scheduler
->name
,
2065 (svc
->flags
& IP_VS_SVC_F_ONEPACKET
)?"ops ":"");
2068 if (svc
->flags
& IP_VS_SVC_F_PERSISTENT
)
2069 seq_printf(seq
, "persistent %d %08X\n",
2071 ntohl(svc
->netmask
));
2073 seq_putc(seq
, '\n');
2075 list_for_each_entry(dest
, &svc
->destinations
, n_list
) {
2076 #ifdef CONFIG_IP_VS_IPV6
2077 if (dest
->af
== AF_INET6
)
2080 " %-7s %-6d %-10d %-10d\n",
2083 ip_vs_fwd_name(atomic_read(&dest
->conn_flags
)),
2084 atomic_read(&dest
->weight
),
2085 atomic_read(&dest
->activeconns
),
2086 atomic_read(&dest
->inactconns
));
2091 "%-7s %-6d %-10d %-10d\n",
2092 ntohl(dest
->addr
.ip
),
2094 ip_vs_fwd_name(atomic_read(&dest
->conn_flags
)),
2095 atomic_read(&dest
->weight
),
2096 atomic_read(&dest
->activeconns
),
2097 atomic_read(&dest
->inactconns
));
2104 static const struct seq_operations ip_vs_info_seq_ops
= {
2105 .start
= ip_vs_info_seq_start
,
2106 .next
= ip_vs_info_seq_next
,
2107 .stop
= ip_vs_info_seq_stop
,
2108 .show
= ip_vs_info_seq_show
,
2111 static int ip_vs_info_open(struct inode
*inode
, struct file
*file
)
2113 return seq_open_net(inode
, file
, &ip_vs_info_seq_ops
,
2114 sizeof(struct ip_vs_iter
));
2117 static const struct file_operations ip_vs_info_fops
= {
2118 .owner
= THIS_MODULE
,
2119 .open
= ip_vs_info_open
,
2121 .llseek
= seq_lseek
,
2122 .release
= seq_release_net
,
2125 static int ip_vs_stats_show(struct seq_file
*seq
, void *v
)
2127 struct net
*net
= seq_file_single_net(seq
);
2128 struct ip_vs_stats_user show
;
2130 /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */
2132 " Total Incoming Outgoing Incoming Outgoing\n");
2134 " Conns Packets Packets Bytes Bytes\n");
2136 ip_vs_copy_stats(&show
, &net_ipvs(net
)->tot_stats
);
2137 seq_printf(seq
, "%8X %8X %8X %16LX %16LX\n\n", show
.conns
,
2138 show
.inpkts
, show
.outpkts
,
2139 (unsigned long long) show
.inbytes
,
2140 (unsigned long long) show
.outbytes
);
2142 /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */
2144 " Conns/s Pkts/s Pkts/s Bytes/s Bytes/s\n");
2145 seq_printf(seq
, "%8X %8X %8X %16X %16X\n",
2146 show
.cps
, show
.inpps
, show
.outpps
,
2147 show
.inbps
, show
.outbps
);
2152 static int ip_vs_stats_seq_open(struct inode
*inode
, struct file
*file
)
2154 return single_open_net(inode
, file
, ip_vs_stats_show
);
2157 static const struct file_operations ip_vs_stats_fops
= {
2158 .owner
= THIS_MODULE
,
2159 .open
= ip_vs_stats_seq_open
,
2161 .llseek
= seq_lseek
,
2162 .release
= single_release_net
,
2165 static int ip_vs_stats_percpu_show(struct seq_file
*seq
, void *v
)
2167 struct net
*net
= seq_file_single_net(seq
);
2168 struct ip_vs_stats
*tot_stats
= &net_ipvs(net
)->tot_stats
;
2169 struct ip_vs_cpu_stats
*cpustats
= tot_stats
->cpustats
;
2170 struct ip_vs_stats_user rates
;
2173 /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */
2175 " Total Incoming Outgoing Incoming Outgoing\n");
2177 "CPU Conns Packets Packets Bytes Bytes\n");
2179 for_each_possible_cpu(i
) {
2180 struct ip_vs_cpu_stats
*u
= per_cpu_ptr(cpustats
, i
);
2182 __u64 inbytes
, outbytes
;
2185 start
= u64_stats_fetch_begin_bh(&u
->syncp
);
2186 inbytes
= u
->ustats
.inbytes
;
2187 outbytes
= u
->ustats
.outbytes
;
2188 } while (u64_stats_fetch_retry_bh(&u
->syncp
, start
));
2190 seq_printf(seq
, "%3X %8X %8X %8X %16LX %16LX\n",
2191 i
, u
->ustats
.conns
, u
->ustats
.inpkts
,
2192 u
->ustats
.outpkts
, (__u64
)inbytes
,
2196 spin_lock_bh(&tot_stats
->lock
);
2198 seq_printf(seq
, " ~ %8X %8X %8X %16LX %16LX\n\n",
2199 tot_stats
->ustats
.conns
, tot_stats
->ustats
.inpkts
,
2200 tot_stats
->ustats
.outpkts
,
2201 (unsigned long long) tot_stats
->ustats
.inbytes
,
2202 (unsigned long long) tot_stats
->ustats
.outbytes
);
2204 ip_vs_read_estimator(&rates
, tot_stats
);
2206 spin_unlock_bh(&tot_stats
->lock
);
2208 /* 01234567 01234567 01234567 0123456701234567 0123456701234567 */
2210 " Conns/s Pkts/s Pkts/s Bytes/s Bytes/s\n");
2211 seq_printf(seq
, " %8X %8X %8X %16X %16X\n",
2221 static int ip_vs_stats_percpu_seq_open(struct inode
*inode
, struct file
*file
)
2223 return single_open_net(inode
, file
, ip_vs_stats_percpu_show
);
2226 static const struct file_operations ip_vs_stats_percpu_fops
= {
2227 .owner
= THIS_MODULE
,
2228 .open
= ip_vs_stats_percpu_seq_open
,
2230 .llseek
= seq_lseek
,
2231 .release
= single_release_net
,
2236 * Set timeout values for tcp tcpfin udp in the timeout_table.
2238 static int ip_vs_set_timeout(struct net
*net
, struct ip_vs_timeout_user
*u
)
2240 #if defined(CONFIG_IP_VS_PROTO_TCP) || defined(CONFIG_IP_VS_PROTO_UDP)
2241 struct ip_vs_proto_data
*pd
;
2244 IP_VS_DBG(2, "Setting timeout tcp:%d tcpfin:%d udp:%d\n",
2249 #ifdef CONFIG_IP_VS_PROTO_TCP
2250 if (u
->tcp_timeout
) {
2251 pd
= ip_vs_proto_data_get(net
, IPPROTO_TCP
);
2252 pd
->timeout_table
[IP_VS_TCP_S_ESTABLISHED
]
2253 = u
->tcp_timeout
* HZ
;
2256 if (u
->tcp_fin_timeout
) {
2257 pd
= ip_vs_proto_data_get(net
, IPPROTO_TCP
);
2258 pd
->timeout_table
[IP_VS_TCP_S_FIN_WAIT
]
2259 = u
->tcp_fin_timeout
* HZ
;
2263 #ifdef CONFIG_IP_VS_PROTO_UDP
2264 if (u
->udp_timeout
) {
2265 pd
= ip_vs_proto_data_get(net
, IPPROTO_UDP
);
2266 pd
->timeout_table
[IP_VS_UDP_S_NORMAL
]
2267 = u
->udp_timeout
* HZ
;
2274 #define SET_CMDID(cmd) (cmd - IP_VS_BASE_CTL)
2275 #define SERVICE_ARG_LEN (sizeof(struct ip_vs_service_user))
2276 #define SVCDEST_ARG_LEN (sizeof(struct ip_vs_service_user) + \
2277 sizeof(struct ip_vs_dest_user))
2278 #define TIMEOUT_ARG_LEN (sizeof(struct ip_vs_timeout_user))
2279 #define DAEMON_ARG_LEN (sizeof(struct ip_vs_daemon_user))
2280 #define MAX_ARG_LEN SVCDEST_ARG_LEN
2282 static const unsigned char set_arglen
[SET_CMDID(IP_VS_SO_SET_MAX
)+1] = {
2283 [SET_CMDID(IP_VS_SO_SET_ADD
)] = SERVICE_ARG_LEN
,
2284 [SET_CMDID(IP_VS_SO_SET_EDIT
)] = SERVICE_ARG_LEN
,
2285 [SET_CMDID(IP_VS_SO_SET_DEL
)] = SERVICE_ARG_LEN
,
2286 [SET_CMDID(IP_VS_SO_SET_FLUSH
)] = 0,
2287 [SET_CMDID(IP_VS_SO_SET_ADDDEST
)] = SVCDEST_ARG_LEN
,
2288 [SET_CMDID(IP_VS_SO_SET_DELDEST
)] = SVCDEST_ARG_LEN
,
2289 [SET_CMDID(IP_VS_SO_SET_EDITDEST
)] = SVCDEST_ARG_LEN
,
2290 [SET_CMDID(IP_VS_SO_SET_TIMEOUT
)] = TIMEOUT_ARG_LEN
,
2291 [SET_CMDID(IP_VS_SO_SET_STARTDAEMON
)] = DAEMON_ARG_LEN
,
2292 [SET_CMDID(IP_VS_SO_SET_STOPDAEMON
)] = DAEMON_ARG_LEN
,
2293 [SET_CMDID(IP_VS_SO_SET_ZERO
)] = SERVICE_ARG_LEN
,
2296 static void ip_vs_copy_usvc_compat(struct ip_vs_service_user_kern
*usvc
,
2297 struct ip_vs_service_user
*usvc_compat
)
2299 memset(usvc
, 0, sizeof(*usvc
));
2302 usvc
->protocol
= usvc_compat
->protocol
;
2303 usvc
->addr
.ip
= usvc_compat
->addr
;
2304 usvc
->port
= usvc_compat
->port
;
2305 usvc
->fwmark
= usvc_compat
->fwmark
;
2307 /* Deep copy of sched_name is not needed here */
2308 usvc
->sched_name
= usvc_compat
->sched_name
;
2310 usvc
->flags
= usvc_compat
->flags
;
2311 usvc
->timeout
= usvc_compat
->timeout
;
2312 usvc
->netmask
= usvc_compat
->netmask
;
2315 static void ip_vs_copy_udest_compat(struct ip_vs_dest_user_kern
*udest
,
2316 struct ip_vs_dest_user
*udest_compat
)
2318 memset(udest
, 0, sizeof(*udest
));
2320 udest
->addr
.ip
= udest_compat
->addr
;
2321 udest
->port
= udest_compat
->port
;
2322 udest
->conn_flags
= udest_compat
->conn_flags
;
2323 udest
->weight
= udest_compat
->weight
;
2324 udest
->u_threshold
= udest_compat
->u_threshold
;
2325 udest
->l_threshold
= udest_compat
->l_threshold
;
2329 do_ip_vs_set_ctl(struct sock
*sk
, int cmd
, void __user
*user
, unsigned int len
)
2331 struct net
*net
= sock_net(sk
);
2333 unsigned char arg
[MAX_ARG_LEN
];
2334 struct ip_vs_service_user
*usvc_compat
;
2335 struct ip_vs_service_user_kern usvc
;
2336 struct ip_vs_service
*svc
;
2337 struct ip_vs_dest_user
*udest_compat
;
2338 struct ip_vs_dest_user_kern udest
;
2339 struct netns_ipvs
*ipvs
= net_ipvs(net
);
2341 if (!capable(CAP_NET_ADMIN
))
2344 if (cmd
< IP_VS_BASE_CTL
|| cmd
> IP_VS_SO_SET_MAX
)
2346 if (len
< 0 || len
> MAX_ARG_LEN
)
2348 if (len
!= set_arglen
[SET_CMDID(cmd
)]) {
2349 pr_err("set_ctl: len %u != %u\n",
2350 len
, set_arglen
[SET_CMDID(cmd
)]);
2354 if (copy_from_user(arg
, user
, len
) != 0)
2357 /* increase the module use count */
2358 ip_vs_use_count_inc();
2360 /* Handle daemons since they have another lock */
2361 if (cmd
== IP_VS_SO_SET_STARTDAEMON
||
2362 cmd
== IP_VS_SO_SET_STOPDAEMON
) {
2363 struct ip_vs_daemon_user
*dm
= (struct ip_vs_daemon_user
*)arg
;
2365 if (mutex_lock_interruptible(&ipvs
->sync_mutex
)) {
2369 if (cmd
== IP_VS_SO_SET_STARTDAEMON
)
2370 ret
= start_sync_thread(net
, dm
->state
, dm
->mcast_ifn
,
2373 ret
= stop_sync_thread(net
, dm
->state
);
2374 mutex_unlock(&ipvs
->sync_mutex
);
2378 if (mutex_lock_interruptible(&__ip_vs_mutex
)) {
2383 if (cmd
== IP_VS_SO_SET_FLUSH
) {
2384 /* Flush the virtual service */
2385 ret
= ip_vs_flush(net
);
2387 } else if (cmd
== IP_VS_SO_SET_TIMEOUT
) {
2388 /* Set timeout values for (tcp tcpfin udp) */
2389 ret
= ip_vs_set_timeout(net
, (struct ip_vs_timeout_user
*)arg
);
2393 usvc_compat
= (struct ip_vs_service_user
*)arg
;
2394 udest_compat
= (struct ip_vs_dest_user
*)(usvc_compat
+ 1);
2396 /* We only use the new structs internally, so copy userspace compat
2397 * structs to extended internal versions */
2398 ip_vs_copy_usvc_compat(&usvc
, usvc_compat
);
2399 ip_vs_copy_udest_compat(&udest
, udest_compat
);
2401 if (cmd
== IP_VS_SO_SET_ZERO
) {
2402 /* if no service address is set, zero counters in all */
2403 if (!usvc
.fwmark
&& !usvc
.addr
.ip
&& !usvc
.port
) {
2404 ret
= ip_vs_zero_all(net
);
2409 /* Check for valid protocol: TCP or UDP or SCTP, even for fwmark!=0 */
2410 if (usvc
.protocol
!= IPPROTO_TCP
&& usvc
.protocol
!= IPPROTO_UDP
&&
2411 usvc
.protocol
!= IPPROTO_SCTP
) {
2412 pr_err("set_ctl: invalid protocol: %d %pI4:%d %s\n",
2413 usvc
.protocol
, &usvc
.addr
.ip
,
2414 ntohs(usvc
.port
), usvc
.sched_name
);
2419 /* Lookup the exact service by <protocol, addr, port> or fwmark */
2420 if (usvc
.fwmark
== 0)
2421 svc
= __ip_vs_service_find(net
, usvc
.af
, usvc
.protocol
,
2422 &usvc
.addr
, usvc
.port
);
2424 svc
= __ip_vs_svc_fwm_find(net
, usvc
.af
, usvc
.fwmark
);
2426 if (cmd
!= IP_VS_SO_SET_ADD
2427 && (svc
== NULL
|| svc
->protocol
!= usvc
.protocol
)) {
2433 case IP_VS_SO_SET_ADD
:
2437 ret
= ip_vs_add_service(net
, &usvc
, &svc
);
2439 case IP_VS_SO_SET_EDIT
:
2440 ret
= ip_vs_edit_service(svc
, &usvc
);
2442 case IP_VS_SO_SET_DEL
:
2443 ret
= ip_vs_del_service(svc
);
2447 case IP_VS_SO_SET_ZERO
:
2448 ret
= ip_vs_zero_service(svc
);
2450 case IP_VS_SO_SET_ADDDEST
:
2451 ret
= ip_vs_add_dest(svc
, &udest
);
2453 case IP_VS_SO_SET_EDITDEST
:
2454 ret
= ip_vs_edit_dest(svc
, &udest
);
2456 case IP_VS_SO_SET_DELDEST
:
2457 ret
= ip_vs_del_dest(svc
, &udest
);
2464 mutex_unlock(&__ip_vs_mutex
);
2466 /* decrease the module use count */
2467 ip_vs_use_count_dec();
2474 ip_vs_copy_service(struct ip_vs_service_entry
*dst
, struct ip_vs_service
*src
)
2476 dst
->protocol
= src
->protocol
;
2477 dst
->addr
= src
->addr
.ip
;
2478 dst
->port
= src
->port
;
2479 dst
->fwmark
= src
->fwmark
;
2480 strlcpy(dst
->sched_name
, src
->scheduler
->name
, sizeof(dst
->sched_name
));
2481 dst
->flags
= src
->flags
;
2482 dst
->timeout
= src
->timeout
/ HZ
;
2483 dst
->netmask
= src
->netmask
;
2484 dst
->num_dests
= src
->num_dests
;
2485 ip_vs_copy_stats(&dst
->stats
, &src
->stats
);
2489 __ip_vs_get_service_entries(struct net
*net
,
2490 const struct ip_vs_get_services
*get
,
2491 struct ip_vs_get_services __user
*uptr
)
2494 struct ip_vs_service
*svc
;
2495 struct ip_vs_service_entry entry
;
2498 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
2499 list_for_each_entry(svc
, &ip_vs_svc_table
[idx
], s_list
) {
2500 /* Only expose IPv4 entries to old interface */
2501 if (svc
->af
!= AF_INET
|| !net_eq(svc
->net
, net
))
2504 if (count
>= get
->num_services
)
2506 memset(&entry
, 0, sizeof(entry
));
2507 ip_vs_copy_service(&entry
, svc
);
2508 if (copy_to_user(&uptr
->entrytable
[count
],
2509 &entry
, sizeof(entry
))) {
2517 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
2518 list_for_each_entry(svc
, &ip_vs_svc_fwm_table
[idx
], f_list
) {
2519 /* Only expose IPv4 entries to old interface */
2520 if (svc
->af
!= AF_INET
|| !net_eq(svc
->net
, net
))
2523 if (count
>= get
->num_services
)
2525 memset(&entry
, 0, sizeof(entry
));
2526 ip_vs_copy_service(&entry
, svc
);
2527 if (copy_to_user(&uptr
->entrytable
[count
],
2528 &entry
, sizeof(entry
))) {
2540 __ip_vs_get_dest_entries(struct net
*net
, const struct ip_vs_get_dests
*get
,
2541 struct ip_vs_get_dests __user
*uptr
)
2543 struct ip_vs_service
*svc
;
2544 union nf_inet_addr addr
= { .ip
= get
->addr
};
2548 svc
= __ip_vs_svc_fwm_find(net
, AF_INET
, get
->fwmark
);
2550 svc
= __ip_vs_service_find(net
, AF_INET
, get
->protocol
, &addr
,
2555 struct ip_vs_dest
*dest
;
2556 struct ip_vs_dest_entry entry
;
2558 list_for_each_entry(dest
, &svc
->destinations
, n_list
) {
2559 if (count
>= get
->num_dests
)
2562 entry
.addr
= dest
->addr
.ip
;
2563 entry
.port
= dest
->port
;
2564 entry
.conn_flags
= atomic_read(&dest
->conn_flags
);
2565 entry
.weight
= atomic_read(&dest
->weight
);
2566 entry
.u_threshold
= dest
->u_threshold
;
2567 entry
.l_threshold
= dest
->l_threshold
;
2568 entry
.activeconns
= atomic_read(&dest
->activeconns
);
2569 entry
.inactconns
= atomic_read(&dest
->inactconns
);
2570 entry
.persistconns
= atomic_read(&dest
->persistconns
);
2571 ip_vs_copy_stats(&entry
.stats
, &dest
->stats
);
2572 if (copy_to_user(&uptr
->entrytable
[count
],
2573 &entry
, sizeof(entry
))) {
2585 __ip_vs_get_timeouts(struct net
*net
, struct ip_vs_timeout_user
*u
)
2587 #if defined(CONFIG_IP_VS_PROTO_TCP) || defined(CONFIG_IP_VS_PROTO_UDP)
2588 struct ip_vs_proto_data
*pd
;
2591 #ifdef CONFIG_IP_VS_PROTO_TCP
2592 pd
= ip_vs_proto_data_get(net
, IPPROTO_TCP
);
2593 u
->tcp_timeout
= pd
->timeout_table
[IP_VS_TCP_S_ESTABLISHED
] / HZ
;
2594 u
->tcp_fin_timeout
= pd
->timeout_table
[IP_VS_TCP_S_FIN_WAIT
] / HZ
;
2596 #ifdef CONFIG_IP_VS_PROTO_UDP
2597 pd
= ip_vs_proto_data_get(net
, IPPROTO_UDP
);
2599 pd
->timeout_table
[IP_VS_UDP_S_NORMAL
] / HZ
;
2604 #define GET_CMDID(cmd) (cmd - IP_VS_BASE_CTL)
2605 #define GET_INFO_ARG_LEN (sizeof(struct ip_vs_getinfo))
2606 #define GET_SERVICES_ARG_LEN (sizeof(struct ip_vs_get_services))
2607 #define GET_SERVICE_ARG_LEN (sizeof(struct ip_vs_service_entry))
2608 #define GET_DESTS_ARG_LEN (sizeof(struct ip_vs_get_dests))
2609 #define GET_TIMEOUT_ARG_LEN (sizeof(struct ip_vs_timeout_user))
2610 #define GET_DAEMON_ARG_LEN (sizeof(struct ip_vs_daemon_user) * 2)
2612 static const unsigned char get_arglen
[GET_CMDID(IP_VS_SO_GET_MAX
)+1] = {
2613 [GET_CMDID(IP_VS_SO_GET_VERSION
)] = 64,
2614 [GET_CMDID(IP_VS_SO_GET_INFO
)] = GET_INFO_ARG_LEN
,
2615 [GET_CMDID(IP_VS_SO_GET_SERVICES
)] = GET_SERVICES_ARG_LEN
,
2616 [GET_CMDID(IP_VS_SO_GET_SERVICE
)] = GET_SERVICE_ARG_LEN
,
2617 [GET_CMDID(IP_VS_SO_GET_DESTS
)] = GET_DESTS_ARG_LEN
,
2618 [GET_CMDID(IP_VS_SO_GET_TIMEOUT
)] = GET_TIMEOUT_ARG_LEN
,
2619 [GET_CMDID(IP_VS_SO_GET_DAEMON
)] = GET_DAEMON_ARG_LEN
,
2623 do_ip_vs_get_ctl(struct sock
*sk
, int cmd
, void __user
*user
, int *len
)
2625 unsigned char arg
[128];
2627 unsigned int copylen
;
2628 struct net
*net
= sock_net(sk
);
2629 struct netns_ipvs
*ipvs
= net_ipvs(net
);
2632 if (!capable(CAP_NET_ADMIN
))
2635 if (cmd
< IP_VS_BASE_CTL
|| cmd
> IP_VS_SO_GET_MAX
)
2638 if (*len
< get_arglen
[GET_CMDID(cmd
)]) {
2639 pr_err("get_ctl: len %u < %u\n",
2640 *len
, get_arglen
[GET_CMDID(cmd
)]);
2644 copylen
= get_arglen
[GET_CMDID(cmd
)];
2648 if (copy_from_user(arg
, user
, copylen
) != 0)
2651 * Handle daemons first since it has its own locking
2653 if (cmd
== IP_VS_SO_GET_DAEMON
) {
2654 struct ip_vs_daemon_user d
[2];
2656 memset(&d
, 0, sizeof(d
));
2657 if (mutex_lock_interruptible(&ipvs
->sync_mutex
))
2658 return -ERESTARTSYS
;
2660 if (ipvs
->sync_state
& IP_VS_STATE_MASTER
) {
2661 d
[0].state
= IP_VS_STATE_MASTER
;
2662 strlcpy(d
[0].mcast_ifn
, ipvs
->master_mcast_ifn
,
2663 sizeof(d
[0].mcast_ifn
));
2664 d
[0].syncid
= ipvs
->master_syncid
;
2666 if (ipvs
->sync_state
& IP_VS_STATE_BACKUP
) {
2667 d
[1].state
= IP_VS_STATE_BACKUP
;
2668 strlcpy(d
[1].mcast_ifn
, ipvs
->backup_mcast_ifn
,
2669 sizeof(d
[1].mcast_ifn
));
2670 d
[1].syncid
= ipvs
->backup_syncid
;
2672 if (copy_to_user(user
, &d
, sizeof(d
)) != 0)
2674 mutex_unlock(&ipvs
->sync_mutex
);
2678 if (mutex_lock_interruptible(&__ip_vs_mutex
))
2679 return -ERESTARTSYS
;
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(net
, 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
;
2733 svc
= __ip_vs_svc_fwm_find(net
, AF_INET
, entry
->fwmark
);
2735 svc
= __ip_vs_service_find(net
, AF_INET
,
2736 entry
->protocol
, &addr
,
2739 ip_vs_copy_service(entry
, svc
);
2740 if (copy_to_user(user
, entry
, sizeof(*entry
)) != 0)
2747 case IP_VS_SO_GET_DESTS
:
2749 struct ip_vs_get_dests
*get
;
2752 get
= (struct ip_vs_get_dests
*)arg
;
2753 size
= sizeof(*get
) +
2754 sizeof(struct ip_vs_dest_entry
) * get
->num_dests
;
2756 pr_err("length: %u != %u\n", *len
, size
);
2760 ret
= __ip_vs_get_dest_entries(net
, get
, user
);
2764 case IP_VS_SO_GET_TIMEOUT
:
2766 struct ip_vs_timeout_user t
;
2768 memset(&t
, 0, sizeof(t
));
2769 __ip_vs_get_timeouts(net
, &t
);
2770 if (copy_to_user(user
, &t
, sizeof(t
)) != 0)
2780 mutex_unlock(&__ip_vs_mutex
);
2785 static struct nf_sockopt_ops ip_vs_sockopts
= {
2787 .set_optmin
= IP_VS_BASE_CTL
,
2788 .set_optmax
= IP_VS_SO_SET_MAX
+1,
2789 .set
= do_ip_vs_set_ctl
,
2790 .get_optmin
= IP_VS_BASE_CTL
,
2791 .get_optmax
= IP_VS_SO_GET_MAX
+1,
2792 .get
= do_ip_vs_get_ctl
,
2793 .owner
= THIS_MODULE
,
2797 * Generic Netlink interface
2800 /* IPVS genetlink family */
2801 static struct genl_family ip_vs_genl_family
= {
2802 .id
= GENL_ID_GENERATE
,
2804 .name
= IPVS_GENL_NAME
,
2805 .version
= IPVS_GENL_VERSION
,
2806 .maxattr
= IPVS_CMD_MAX
,
2807 .netnsok
= true, /* Make ipvsadm to work on netns */
2810 /* Policy used for first-level command attributes */
2811 static const struct nla_policy ip_vs_cmd_policy
[IPVS_CMD_ATTR_MAX
+ 1] = {
2812 [IPVS_CMD_ATTR_SERVICE
] = { .type
= NLA_NESTED
},
2813 [IPVS_CMD_ATTR_DEST
] = { .type
= NLA_NESTED
},
2814 [IPVS_CMD_ATTR_DAEMON
] = { .type
= NLA_NESTED
},
2815 [IPVS_CMD_ATTR_TIMEOUT_TCP
] = { .type
= NLA_U32
},
2816 [IPVS_CMD_ATTR_TIMEOUT_TCP_FIN
] = { .type
= NLA_U32
},
2817 [IPVS_CMD_ATTR_TIMEOUT_UDP
] = { .type
= NLA_U32
},
2820 /* Policy used for attributes in nested attribute IPVS_CMD_ATTR_DAEMON */
2821 static const struct nla_policy ip_vs_daemon_policy
[IPVS_DAEMON_ATTR_MAX
+ 1] = {
2822 [IPVS_DAEMON_ATTR_STATE
] = { .type
= NLA_U32
},
2823 [IPVS_DAEMON_ATTR_MCAST_IFN
] = { .type
= NLA_NUL_STRING
,
2824 .len
= IP_VS_IFNAME_MAXLEN
},
2825 [IPVS_DAEMON_ATTR_SYNC_ID
] = { .type
= NLA_U32
},
2828 /* Policy used for attributes in nested attribute IPVS_CMD_ATTR_SERVICE */
2829 static const struct nla_policy ip_vs_svc_policy
[IPVS_SVC_ATTR_MAX
+ 1] = {
2830 [IPVS_SVC_ATTR_AF
] = { .type
= NLA_U16
},
2831 [IPVS_SVC_ATTR_PROTOCOL
] = { .type
= NLA_U16
},
2832 [IPVS_SVC_ATTR_ADDR
] = { .type
= NLA_BINARY
,
2833 .len
= sizeof(union nf_inet_addr
) },
2834 [IPVS_SVC_ATTR_PORT
] = { .type
= NLA_U16
},
2835 [IPVS_SVC_ATTR_FWMARK
] = { .type
= NLA_U32
},
2836 [IPVS_SVC_ATTR_SCHED_NAME
] = { .type
= NLA_NUL_STRING
,
2837 .len
= IP_VS_SCHEDNAME_MAXLEN
},
2838 [IPVS_SVC_ATTR_PE_NAME
] = { .type
= NLA_NUL_STRING
,
2839 .len
= IP_VS_PENAME_MAXLEN
},
2840 [IPVS_SVC_ATTR_FLAGS
] = { .type
= NLA_BINARY
,
2841 .len
= sizeof(struct ip_vs_flags
) },
2842 [IPVS_SVC_ATTR_TIMEOUT
] = { .type
= NLA_U32
},
2843 [IPVS_SVC_ATTR_NETMASK
] = { .type
= NLA_U32
},
2844 [IPVS_SVC_ATTR_STATS
] = { .type
= NLA_NESTED
},
2847 /* Policy used for attributes in nested attribute IPVS_CMD_ATTR_DEST */
2848 static const struct nla_policy ip_vs_dest_policy
[IPVS_DEST_ATTR_MAX
+ 1] = {
2849 [IPVS_DEST_ATTR_ADDR
] = { .type
= NLA_BINARY
,
2850 .len
= sizeof(union nf_inet_addr
) },
2851 [IPVS_DEST_ATTR_PORT
] = { .type
= NLA_U16
},
2852 [IPVS_DEST_ATTR_FWD_METHOD
] = { .type
= NLA_U32
},
2853 [IPVS_DEST_ATTR_WEIGHT
] = { .type
= NLA_U32
},
2854 [IPVS_DEST_ATTR_U_THRESH
] = { .type
= NLA_U32
},
2855 [IPVS_DEST_ATTR_L_THRESH
] = { .type
= NLA_U32
},
2856 [IPVS_DEST_ATTR_ACTIVE_CONNS
] = { .type
= NLA_U32
},
2857 [IPVS_DEST_ATTR_INACT_CONNS
] = { .type
= NLA_U32
},
2858 [IPVS_DEST_ATTR_PERSIST_CONNS
] = { .type
= NLA_U32
},
2859 [IPVS_DEST_ATTR_STATS
] = { .type
= NLA_NESTED
},
2862 static int ip_vs_genl_fill_stats(struct sk_buff
*skb
, int container_type
,
2863 struct ip_vs_stats
*stats
)
2865 struct ip_vs_stats_user ustats
;
2866 struct nlattr
*nl_stats
= nla_nest_start(skb
, container_type
);
2870 ip_vs_copy_stats(&ustats
, stats
);
2872 if (nla_put_u32(skb
, IPVS_STATS_ATTR_CONNS
, ustats
.conns
) ||
2873 nla_put_u32(skb
, IPVS_STATS_ATTR_INPKTS
, ustats
.inpkts
) ||
2874 nla_put_u32(skb
, IPVS_STATS_ATTR_OUTPKTS
, ustats
.outpkts
) ||
2875 nla_put_u64(skb
, IPVS_STATS_ATTR_INBYTES
, ustats
.inbytes
) ||
2876 nla_put_u64(skb
, IPVS_STATS_ATTR_OUTBYTES
, ustats
.outbytes
) ||
2877 nla_put_u32(skb
, IPVS_STATS_ATTR_CPS
, ustats
.cps
) ||
2878 nla_put_u32(skb
, IPVS_STATS_ATTR_INPPS
, ustats
.inpps
) ||
2879 nla_put_u32(skb
, IPVS_STATS_ATTR_OUTPPS
, ustats
.outpps
) ||
2880 nla_put_u32(skb
, IPVS_STATS_ATTR_INBPS
, ustats
.inbps
) ||
2881 nla_put_u32(skb
, IPVS_STATS_ATTR_OUTBPS
, ustats
.outbps
))
2882 goto nla_put_failure
;
2883 nla_nest_end(skb
, nl_stats
);
2888 nla_nest_cancel(skb
, nl_stats
);
2892 static int ip_vs_genl_fill_service(struct sk_buff
*skb
,
2893 struct ip_vs_service
*svc
)
2895 struct nlattr
*nl_service
;
2896 struct ip_vs_flags flags
= { .flags
= svc
->flags
,
2899 nl_service
= nla_nest_start(skb
, IPVS_CMD_ATTR_SERVICE
);
2903 if (nla_put_u16(skb
, IPVS_SVC_ATTR_AF
, svc
->af
))
2904 goto nla_put_failure
;
2906 if (nla_put_u32(skb
, IPVS_SVC_ATTR_FWMARK
, svc
->fwmark
))
2907 goto nla_put_failure
;
2909 if (nla_put_u16(skb
, IPVS_SVC_ATTR_PROTOCOL
, svc
->protocol
) ||
2910 nla_put(skb
, IPVS_SVC_ATTR_ADDR
, sizeof(svc
->addr
), &svc
->addr
) ||
2911 nla_put_u16(skb
, IPVS_SVC_ATTR_PORT
, svc
->port
))
2912 goto nla_put_failure
;
2915 if (nla_put_string(skb
, IPVS_SVC_ATTR_SCHED_NAME
, svc
->scheduler
->name
) ||
2917 nla_put_string(skb
, IPVS_SVC_ATTR_PE_NAME
, svc
->pe
->name
)) ||
2918 nla_put(skb
, IPVS_SVC_ATTR_FLAGS
, sizeof(flags
), &flags
) ||
2919 nla_put_u32(skb
, IPVS_SVC_ATTR_TIMEOUT
, svc
->timeout
/ HZ
) ||
2920 nla_put_u32(skb
, IPVS_SVC_ATTR_NETMASK
, svc
->netmask
))
2921 goto nla_put_failure
;
2922 if (ip_vs_genl_fill_stats(skb
, IPVS_SVC_ATTR_STATS
, &svc
->stats
))
2923 goto nla_put_failure
;
2925 nla_nest_end(skb
, nl_service
);
2930 nla_nest_cancel(skb
, nl_service
);
2934 static int ip_vs_genl_dump_service(struct sk_buff
*skb
,
2935 struct ip_vs_service
*svc
,
2936 struct netlink_callback
*cb
)
2940 hdr
= genlmsg_put(skb
, NETLINK_CB(cb
->skb
).pid
, cb
->nlh
->nlmsg_seq
,
2941 &ip_vs_genl_family
, NLM_F_MULTI
,
2942 IPVS_CMD_NEW_SERVICE
);
2946 if (ip_vs_genl_fill_service(skb
, svc
) < 0)
2947 goto nla_put_failure
;
2949 return genlmsg_end(skb
, hdr
);
2952 genlmsg_cancel(skb
, hdr
);
2956 static int ip_vs_genl_dump_services(struct sk_buff
*skb
,
2957 struct netlink_callback
*cb
)
2960 int start
= cb
->args
[0];
2961 struct ip_vs_service
*svc
;
2962 struct net
*net
= skb_sknet(skb
);
2964 mutex_lock(&__ip_vs_mutex
);
2965 for (i
= 0; i
< IP_VS_SVC_TAB_SIZE
; i
++) {
2966 list_for_each_entry(svc
, &ip_vs_svc_table
[i
], s_list
) {
2967 if (++idx
<= start
|| !net_eq(svc
->net
, net
))
2969 if (ip_vs_genl_dump_service(skb
, svc
, cb
) < 0) {
2971 goto nla_put_failure
;
2976 for (i
= 0; i
< IP_VS_SVC_TAB_SIZE
; i
++) {
2977 list_for_each_entry(svc
, &ip_vs_svc_fwm_table
[i
], f_list
) {
2978 if (++idx
<= start
|| !net_eq(svc
->net
, net
))
2980 if (ip_vs_genl_dump_service(skb
, svc
, cb
) < 0) {
2982 goto nla_put_failure
;
2988 mutex_unlock(&__ip_vs_mutex
);
2994 static int ip_vs_genl_parse_service(struct net
*net
,
2995 struct ip_vs_service_user_kern
*usvc
,
2996 struct nlattr
*nla
, int full_entry
,
2997 struct ip_vs_service
**ret_svc
)
2999 struct nlattr
*attrs
[IPVS_SVC_ATTR_MAX
+ 1];
3000 struct nlattr
*nla_af
, *nla_port
, *nla_fwmark
, *nla_protocol
, *nla_addr
;
3001 struct ip_vs_service
*svc
;
3003 /* Parse mandatory identifying service fields first */
3005 nla_parse_nested(attrs
, IPVS_SVC_ATTR_MAX
, nla
, ip_vs_svc_policy
))
3008 nla_af
= attrs
[IPVS_SVC_ATTR_AF
];
3009 nla_protocol
= attrs
[IPVS_SVC_ATTR_PROTOCOL
];
3010 nla_addr
= attrs
[IPVS_SVC_ATTR_ADDR
];
3011 nla_port
= attrs
[IPVS_SVC_ATTR_PORT
];
3012 nla_fwmark
= attrs
[IPVS_SVC_ATTR_FWMARK
];
3014 if (!(nla_af
&& (nla_fwmark
|| (nla_port
&& nla_protocol
&& nla_addr
))))
3017 memset(usvc
, 0, sizeof(*usvc
));
3019 usvc
->af
= nla_get_u16(nla_af
);
3020 #ifdef CONFIG_IP_VS_IPV6
3021 if (usvc
->af
!= AF_INET
&& usvc
->af
!= AF_INET6
)
3023 if (usvc
->af
!= AF_INET
)
3025 return -EAFNOSUPPORT
;
3028 usvc
->protocol
= IPPROTO_TCP
;
3029 usvc
->fwmark
= nla_get_u32(nla_fwmark
);
3031 usvc
->protocol
= nla_get_u16(nla_protocol
);
3032 nla_memcpy(&usvc
->addr
, nla_addr
, sizeof(usvc
->addr
));
3033 usvc
->port
= nla_get_u16(nla_port
);
3038 svc
= __ip_vs_svc_fwm_find(net
, usvc
->af
, usvc
->fwmark
);
3040 svc
= __ip_vs_service_find(net
, usvc
->af
, usvc
->protocol
,
3041 &usvc
->addr
, usvc
->port
);
3044 /* If a full entry was requested, check for the additional fields */
3046 struct nlattr
*nla_sched
, *nla_flags
, *nla_pe
, *nla_timeout
,
3048 struct ip_vs_flags flags
;
3050 nla_sched
= attrs
[IPVS_SVC_ATTR_SCHED_NAME
];
3051 nla_pe
= attrs
[IPVS_SVC_ATTR_PE_NAME
];
3052 nla_flags
= attrs
[IPVS_SVC_ATTR_FLAGS
];
3053 nla_timeout
= attrs
[IPVS_SVC_ATTR_TIMEOUT
];
3054 nla_netmask
= attrs
[IPVS_SVC_ATTR_NETMASK
];
3056 if (!(nla_sched
&& nla_flags
&& nla_timeout
&& nla_netmask
))
3059 nla_memcpy(&flags
, nla_flags
, sizeof(flags
));
3061 /* prefill flags from service if it already exists */
3063 usvc
->flags
= svc
->flags
;
3065 /* set new flags from userland */
3066 usvc
->flags
= (usvc
->flags
& ~flags
.mask
) |
3067 (flags
.flags
& flags
.mask
);
3068 usvc
->sched_name
= nla_data(nla_sched
);
3069 usvc
->pe_name
= nla_pe
? nla_data(nla_pe
) : NULL
;
3070 usvc
->timeout
= nla_get_u32(nla_timeout
);
3071 usvc
->netmask
= nla_get_u32(nla_netmask
);
3077 static struct ip_vs_service
*ip_vs_genl_find_service(struct net
*net
,
3080 struct ip_vs_service_user_kern usvc
;
3081 struct ip_vs_service
*svc
;
3084 ret
= ip_vs_genl_parse_service(net
, &usvc
, nla
, 0, &svc
);
3085 return ret
? ERR_PTR(ret
) : svc
;
3088 static int ip_vs_genl_fill_dest(struct sk_buff
*skb
, struct ip_vs_dest
*dest
)
3090 struct nlattr
*nl_dest
;
3092 nl_dest
= nla_nest_start(skb
, IPVS_CMD_ATTR_DEST
);
3096 if (nla_put(skb
, IPVS_DEST_ATTR_ADDR
, sizeof(dest
->addr
), &dest
->addr
) ||
3097 nla_put_u16(skb
, IPVS_DEST_ATTR_PORT
, dest
->port
) ||
3098 nla_put_u32(skb
, IPVS_DEST_ATTR_FWD_METHOD
,
3099 (atomic_read(&dest
->conn_flags
) &
3100 IP_VS_CONN_F_FWD_MASK
)) ||
3101 nla_put_u32(skb
, IPVS_DEST_ATTR_WEIGHT
,
3102 atomic_read(&dest
->weight
)) ||
3103 nla_put_u32(skb
, IPVS_DEST_ATTR_U_THRESH
, dest
->u_threshold
) ||
3104 nla_put_u32(skb
, IPVS_DEST_ATTR_L_THRESH
, dest
->l_threshold
) ||
3105 nla_put_u32(skb
, IPVS_DEST_ATTR_ACTIVE_CONNS
,
3106 atomic_read(&dest
->activeconns
)) ||
3107 nla_put_u32(skb
, IPVS_DEST_ATTR_INACT_CONNS
,
3108 atomic_read(&dest
->inactconns
)) ||
3109 nla_put_u32(skb
, IPVS_DEST_ATTR_PERSIST_CONNS
,
3110 atomic_read(&dest
->persistconns
)))
3111 goto nla_put_failure
;
3112 if (ip_vs_genl_fill_stats(skb
, IPVS_DEST_ATTR_STATS
, &dest
->stats
))
3113 goto nla_put_failure
;
3115 nla_nest_end(skb
, nl_dest
);
3120 nla_nest_cancel(skb
, nl_dest
);
3124 static int ip_vs_genl_dump_dest(struct sk_buff
*skb
, struct ip_vs_dest
*dest
,
3125 struct netlink_callback
*cb
)
3129 hdr
= genlmsg_put(skb
, NETLINK_CB(cb
->skb
).pid
, cb
->nlh
->nlmsg_seq
,
3130 &ip_vs_genl_family
, NLM_F_MULTI
,
3135 if (ip_vs_genl_fill_dest(skb
, dest
) < 0)
3136 goto nla_put_failure
;
3138 return genlmsg_end(skb
, hdr
);
3141 genlmsg_cancel(skb
, hdr
);
3145 static int ip_vs_genl_dump_dests(struct sk_buff
*skb
,
3146 struct netlink_callback
*cb
)
3149 int start
= cb
->args
[0];
3150 struct ip_vs_service
*svc
;
3151 struct ip_vs_dest
*dest
;
3152 struct nlattr
*attrs
[IPVS_CMD_ATTR_MAX
+ 1];
3153 struct net
*net
= skb_sknet(skb
);
3155 mutex_lock(&__ip_vs_mutex
);
3157 /* Try to find the service for which to dump destinations */
3158 if (nlmsg_parse(cb
->nlh
, GENL_HDRLEN
, attrs
,
3159 IPVS_CMD_ATTR_MAX
, ip_vs_cmd_policy
))
3163 svc
= ip_vs_genl_find_service(net
, attrs
[IPVS_CMD_ATTR_SERVICE
]);
3164 if (IS_ERR(svc
) || svc
== NULL
)
3167 /* Dump the destinations */
3168 list_for_each_entry(dest
, &svc
->destinations
, n_list
) {
3171 if (ip_vs_genl_dump_dest(skb
, dest
, cb
) < 0) {
3173 goto nla_put_failure
;
3181 mutex_unlock(&__ip_vs_mutex
);
3186 static int ip_vs_genl_parse_dest(struct ip_vs_dest_user_kern
*udest
,
3187 struct nlattr
*nla
, int full_entry
)
3189 struct nlattr
*attrs
[IPVS_DEST_ATTR_MAX
+ 1];
3190 struct nlattr
*nla_addr
, *nla_port
;
3192 /* Parse mandatory identifying destination fields first */
3194 nla_parse_nested(attrs
, IPVS_DEST_ATTR_MAX
, nla
, ip_vs_dest_policy
))
3197 nla_addr
= attrs
[IPVS_DEST_ATTR_ADDR
];
3198 nla_port
= attrs
[IPVS_DEST_ATTR_PORT
];
3200 if (!(nla_addr
&& nla_port
))
3203 memset(udest
, 0, sizeof(*udest
));
3205 nla_memcpy(&udest
->addr
, nla_addr
, sizeof(udest
->addr
));
3206 udest
->port
= nla_get_u16(nla_port
);
3208 /* If a full entry was requested, check for the additional fields */
3210 struct nlattr
*nla_fwd
, *nla_weight
, *nla_u_thresh
,
3213 nla_fwd
= attrs
[IPVS_DEST_ATTR_FWD_METHOD
];
3214 nla_weight
= attrs
[IPVS_DEST_ATTR_WEIGHT
];
3215 nla_u_thresh
= attrs
[IPVS_DEST_ATTR_U_THRESH
];
3216 nla_l_thresh
= attrs
[IPVS_DEST_ATTR_L_THRESH
];
3218 if (!(nla_fwd
&& nla_weight
&& nla_u_thresh
&& nla_l_thresh
))
3221 udest
->conn_flags
= nla_get_u32(nla_fwd
)
3222 & IP_VS_CONN_F_FWD_MASK
;
3223 udest
->weight
= nla_get_u32(nla_weight
);
3224 udest
->u_threshold
= nla_get_u32(nla_u_thresh
);
3225 udest
->l_threshold
= nla_get_u32(nla_l_thresh
);
3231 static int ip_vs_genl_fill_daemon(struct sk_buff
*skb
, __be32 state
,
3232 const char *mcast_ifn
, __be32 syncid
)
3234 struct nlattr
*nl_daemon
;
3236 nl_daemon
= nla_nest_start(skb
, IPVS_CMD_ATTR_DAEMON
);
3240 if (nla_put_u32(skb
, IPVS_DAEMON_ATTR_STATE
, state
) ||
3241 nla_put_string(skb
, IPVS_DAEMON_ATTR_MCAST_IFN
, mcast_ifn
) ||
3242 nla_put_u32(skb
, IPVS_DAEMON_ATTR_SYNC_ID
, syncid
))
3243 goto nla_put_failure
;
3244 nla_nest_end(skb
, nl_daemon
);
3249 nla_nest_cancel(skb
, nl_daemon
);
3253 static int ip_vs_genl_dump_daemon(struct sk_buff
*skb
, __be32 state
,
3254 const char *mcast_ifn
, __be32 syncid
,
3255 struct netlink_callback
*cb
)
3258 hdr
= genlmsg_put(skb
, NETLINK_CB(cb
->skb
).pid
, cb
->nlh
->nlmsg_seq
,
3259 &ip_vs_genl_family
, NLM_F_MULTI
,
3260 IPVS_CMD_NEW_DAEMON
);
3264 if (ip_vs_genl_fill_daemon(skb
, state
, mcast_ifn
, syncid
))
3265 goto nla_put_failure
;
3267 return genlmsg_end(skb
, hdr
);
3270 genlmsg_cancel(skb
, hdr
);
3274 static int ip_vs_genl_dump_daemons(struct sk_buff
*skb
,
3275 struct netlink_callback
*cb
)
3277 struct net
*net
= skb_sknet(skb
);
3278 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3280 mutex_lock(&ipvs
->sync_mutex
);
3281 if ((ipvs
->sync_state
& IP_VS_STATE_MASTER
) && !cb
->args
[0]) {
3282 if (ip_vs_genl_dump_daemon(skb
, IP_VS_STATE_MASTER
,
3283 ipvs
->master_mcast_ifn
,
3284 ipvs
->master_syncid
, cb
) < 0)
3285 goto nla_put_failure
;
3290 if ((ipvs
->sync_state
& IP_VS_STATE_BACKUP
) && !cb
->args
[1]) {
3291 if (ip_vs_genl_dump_daemon(skb
, IP_VS_STATE_BACKUP
,
3292 ipvs
->backup_mcast_ifn
,
3293 ipvs
->backup_syncid
, cb
) < 0)
3294 goto nla_put_failure
;
3300 mutex_unlock(&ipvs
->sync_mutex
);
3305 static int ip_vs_genl_new_daemon(struct net
*net
, struct nlattr
**attrs
)
3307 if (!(attrs
[IPVS_DAEMON_ATTR_STATE
] &&
3308 attrs
[IPVS_DAEMON_ATTR_MCAST_IFN
] &&
3309 attrs
[IPVS_DAEMON_ATTR_SYNC_ID
]))
3312 return start_sync_thread(net
,
3313 nla_get_u32(attrs
[IPVS_DAEMON_ATTR_STATE
]),
3314 nla_data(attrs
[IPVS_DAEMON_ATTR_MCAST_IFN
]),
3315 nla_get_u32(attrs
[IPVS_DAEMON_ATTR_SYNC_ID
]));
3318 static int ip_vs_genl_del_daemon(struct net
*net
, struct nlattr
**attrs
)
3320 if (!attrs
[IPVS_DAEMON_ATTR_STATE
])
3323 return stop_sync_thread(net
,
3324 nla_get_u32(attrs
[IPVS_DAEMON_ATTR_STATE
]));
3327 static int ip_vs_genl_set_config(struct net
*net
, struct nlattr
**attrs
)
3329 struct ip_vs_timeout_user t
;
3331 __ip_vs_get_timeouts(net
, &t
);
3333 if (attrs
[IPVS_CMD_ATTR_TIMEOUT_TCP
])
3334 t
.tcp_timeout
= nla_get_u32(attrs
[IPVS_CMD_ATTR_TIMEOUT_TCP
]);
3336 if (attrs
[IPVS_CMD_ATTR_TIMEOUT_TCP_FIN
])
3338 nla_get_u32(attrs
[IPVS_CMD_ATTR_TIMEOUT_TCP_FIN
]);
3340 if (attrs
[IPVS_CMD_ATTR_TIMEOUT_UDP
])
3341 t
.udp_timeout
= nla_get_u32(attrs
[IPVS_CMD_ATTR_TIMEOUT_UDP
]);
3343 return ip_vs_set_timeout(net
, &t
);
3346 static int ip_vs_genl_set_daemon(struct sk_buff
*skb
, struct genl_info
*info
)
3350 struct netns_ipvs
*ipvs
;
3352 net
= skb_sknet(skb
);
3353 ipvs
= net_ipvs(net
);
3354 cmd
= info
->genlhdr
->cmd
;
3356 if (cmd
== IPVS_CMD_NEW_DAEMON
|| cmd
== IPVS_CMD_DEL_DAEMON
) {
3357 struct nlattr
*daemon_attrs
[IPVS_DAEMON_ATTR_MAX
+ 1];
3359 mutex_lock(&ipvs
->sync_mutex
);
3360 if (!info
->attrs
[IPVS_CMD_ATTR_DAEMON
] ||
3361 nla_parse_nested(daemon_attrs
, IPVS_DAEMON_ATTR_MAX
,
3362 info
->attrs
[IPVS_CMD_ATTR_DAEMON
],
3363 ip_vs_daemon_policy
)) {
3368 if (cmd
== IPVS_CMD_NEW_DAEMON
)
3369 ret
= ip_vs_genl_new_daemon(net
, daemon_attrs
);
3371 ret
= ip_vs_genl_del_daemon(net
, daemon_attrs
);
3373 mutex_unlock(&ipvs
->sync_mutex
);
3378 static int ip_vs_genl_set_cmd(struct sk_buff
*skb
, struct genl_info
*info
)
3380 struct ip_vs_service
*svc
= NULL
;
3381 struct ip_vs_service_user_kern usvc
;
3382 struct ip_vs_dest_user_kern udest
;
3384 int need_full_svc
= 0, need_full_dest
= 0;
3387 net
= skb_sknet(skb
);
3388 cmd
= info
->genlhdr
->cmd
;
3390 mutex_lock(&__ip_vs_mutex
);
3392 if (cmd
== IPVS_CMD_FLUSH
) {
3393 ret
= ip_vs_flush(net
);
3395 } else if (cmd
== IPVS_CMD_SET_CONFIG
) {
3396 ret
= ip_vs_genl_set_config(net
, info
->attrs
);
3398 } else if (cmd
== IPVS_CMD_ZERO
&&
3399 !info
->attrs
[IPVS_CMD_ATTR_SERVICE
]) {
3400 ret
= ip_vs_zero_all(net
);
3404 /* All following commands require a service argument, so check if we
3405 * received a valid one. We need a full service specification when
3406 * adding / editing a service. Only identifying members otherwise. */
3407 if (cmd
== IPVS_CMD_NEW_SERVICE
|| cmd
== IPVS_CMD_SET_SERVICE
)
3410 ret
= ip_vs_genl_parse_service(net
, &usvc
,
3411 info
->attrs
[IPVS_CMD_ATTR_SERVICE
],
3412 need_full_svc
, &svc
);
3416 /* Unless we're adding a new service, the service must already exist */
3417 if ((cmd
!= IPVS_CMD_NEW_SERVICE
) && (svc
== NULL
)) {
3422 /* Destination commands require a valid destination argument. For
3423 * adding / editing a destination, we need a full destination
3425 if (cmd
== IPVS_CMD_NEW_DEST
|| cmd
== IPVS_CMD_SET_DEST
||
3426 cmd
== IPVS_CMD_DEL_DEST
) {
3427 if (cmd
!= IPVS_CMD_DEL_DEST
)
3430 ret
= ip_vs_genl_parse_dest(&udest
,
3431 info
->attrs
[IPVS_CMD_ATTR_DEST
],
3438 case IPVS_CMD_NEW_SERVICE
:
3440 ret
= ip_vs_add_service(net
, &usvc
, &svc
);
3444 case IPVS_CMD_SET_SERVICE
:
3445 ret
= ip_vs_edit_service(svc
, &usvc
);
3447 case IPVS_CMD_DEL_SERVICE
:
3448 ret
= ip_vs_del_service(svc
);
3449 /* do not use svc, it can be freed */
3451 case IPVS_CMD_NEW_DEST
:
3452 ret
= ip_vs_add_dest(svc
, &udest
);
3454 case IPVS_CMD_SET_DEST
:
3455 ret
= ip_vs_edit_dest(svc
, &udest
);
3457 case IPVS_CMD_DEL_DEST
:
3458 ret
= ip_vs_del_dest(svc
, &udest
);
3461 ret
= ip_vs_zero_service(svc
);
3468 mutex_unlock(&__ip_vs_mutex
);
3473 static int ip_vs_genl_get_cmd(struct sk_buff
*skb
, struct genl_info
*info
)
3475 struct sk_buff
*msg
;
3477 int ret
, cmd
, reply_cmd
;
3480 net
= skb_sknet(skb
);
3481 cmd
= info
->genlhdr
->cmd
;
3483 if (cmd
== IPVS_CMD_GET_SERVICE
)
3484 reply_cmd
= IPVS_CMD_NEW_SERVICE
;
3485 else if (cmd
== IPVS_CMD_GET_INFO
)
3486 reply_cmd
= IPVS_CMD_SET_INFO
;
3487 else if (cmd
== IPVS_CMD_GET_CONFIG
)
3488 reply_cmd
= IPVS_CMD_SET_CONFIG
;
3490 pr_err("unknown Generic Netlink command\n");
3494 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_KERNEL
);
3498 mutex_lock(&__ip_vs_mutex
);
3500 reply
= genlmsg_put_reply(msg
, info
, &ip_vs_genl_family
, 0, reply_cmd
);
3502 goto nla_put_failure
;
3505 case IPVS_CMD_GET_SERVICE
:
3507 struct ip_vs_service
*svc
;
3509 svc
= ip_vs_genl_find_service(net
,
3510 info
->attrs
[IPVS_CMD_ATTR_SERVICE
]);
3515 ret
= ip_vs_genl_fill_service(msg
, svc
);
3517 goto nla_put_failure
;
3526 case IPVS_CMD_GET_CONFIG
:
3528 struct ip_vs_timeout_user t
;
3530 __ip_vs_get_timeouts(net
, &t
);
3531 #ifdef CONFIG_IP_VS_PROTO_TCP
3532 if (nla_put_u32(msg
, IPVS_CMD_ATTR_TIMEOUT_TCP
,
3534 nla_put_u32(msg
, IPVS_CMD_ATTR_TIMEOUT_TCP_FIN
,
3536 goto nla_put_failure
;
3538 #ifdef CONFIG_IP_VS_PROTO_UDP
3539 if (nla_put_u32(msg
, IPVS_CMD_ATTR_TIMEOUT_UDP
, t
.udp_timeout
))
3540 goto nla_put_failure
;
3546 case IPVS_CMD_GET_INFO
:
3547 if (nla_put_u32(msg
, IPVS_INFO_ATTR_VERSION
,
3548 IP_VS_VERSION_CODE
) ||
3549 nla_put_u32(msg
, IPVS_INFO_ATTR_CONN_TAB_SIZE
,
3550 ip_vs_conn_tab_size
))
3551 goto nla_put_failure
;
3555 genlmsg_end(msg
, reply
);
3556 ret
= genlmsg_reply(msg
, info
);
3560 pr_err("not enough space in Netlink message\n");
3566 mutex_unlock(&__ip_vs_mutex
);
3572 static struct genl_ops ip_vs_genl_ops
[] __read_mostly
= {
3574 .cmd
= IPVS_CMD_NEW_SERVICE
,
3575 .flags
= GENL_ADMIN_PERM
,
3576 .policy
= ip_vs_cmd_policy
,
3577 .doit
= ip_vs_genl_set_cmd
,
3580 .cmd
= IPVS_CMD_SET_SERVICE
,
3581 .flags
= GENL_ADMIN_PERM
,
3582 .policy
= ip_vs_cmd_policy
,
3583 .doit
= ip_vs_genl_set_cmd
,
3586 .cmd
= IPVS_CMD_DEL_SERVICE
,
3587 .flags
= GENL_ADMIN_PERM
,
3588 .policy
= ip_vs_cmd_policy
,
3589 .doit
= ip_vs_genl_set_cmd
,
3592 .cmd
= IPVS_CMD_GET_SERVICE
,
3593 .flags
= GENL_ADMIN_PERM
,
3594 .doit
= ip_vs_genl_get_cmd
,
3595 .dumpit
= ip_vs_genl_dump_services
,
3596 .policy
= ip_vs_cmd_policy
,
3599 .cmd
= IPVS_CMD_NEW_DEST
,
3600 .flags
= GENL_ADMIN_PERM
,
3601 .policy
= ip_vs_cmd_policy
,
3602 .doit
= ip_vs_genl_set_cmd
,
3605 .cmd
= IPVS_CMD_SET_DEST
,
3606 .flags
= GENL_ADMIN_PERM
,
3607 .policy
= ip_vs_cmd_policy
,
3608 .doit
= ip_vs_genl_set_cmd
,
3611 .cmd
= IPVS_CMD_DEL_DEST
,
3612 .flags
= GENL_ADMIN_PERM
,
3613 .policy
= ip_vs_cmd_policy
,
3614 .doit
= ip_vs_genl_set_cmd
,
3617 .cmd
= IPVS_CMD_GET_DEST
,
3618 .flags
= GENL_ADMIN_PERM
,
3619 .policy
= ip_vs_cmd_policy
,
3620 .dumpit
= ip_vs_genl_dump_dests
,
3623 .cmd
= IPVS_CMD_NEW_DAEMON
,
3624 .flags
= GENL_ADMIN_PERM
,
3625 .policy
= ip_vs_cmd_policy
,
3626 .doit
= ip_vs_genl_set_daemon
,
3629 .cmd
= IPVS_CMD_DEL_DAEMON
,
3630 .flags
= GENL_ADMIN_PERM
,
3631 .policy
= ip_vs_cmd_policy
,
3632 .doit
= ip_vs_genl_set_daemon
,
3635 .cmd
= IPVS_CMD_GET_DAEMON
,
3636 .flags
= GENL_ADMIN_PERM
,
3637 .dumpit
= ip_vs_genl_dump_daemons
,
3640 .cmd
= IPVS_CMD_SET_CONFIG
,
3641 .flags
= GENL_ADMIN_PERM
,
3642 .policy
= ip_vs_cmd_policy
,
3643 .doit
= ip_vs_genl_set_cmd
,
3646 .cmd
= IPVS_CMD_GET_CONFIG
,
3647 .flags
= GENL_ADMIN_PERM
,
3648 .doit
= ip_vs_genl_get_cmd
,
3651 .cmd
= IPVS_CMD_GET_INFO
,
3652 .flags
= GENL_ADMIN_PERM
,
3653 .doit
= ip_vs_genl_get_cmd
,
3656 .cmd
= IPVS_CMD_ZERO
,
3657 .flags
= GENL_ADMIN_PERM
,
3658 .policy
= ip_vs_cmd_policy
,
3659 .doit
= ip_vs_genl_set_cmd
,
3662 .cmd
= IPVS_CMD_FLUSH
,
3663 .flags
= GENL_ADMIN_PERM
,
3664 .doit
= ip_vs_genl_set_cmd
,
3668 static int __init
ip_vs_genl_register(void)
3670 return genl_register_family_with_ops(&ip_vs_genl_family
,
3671 ip_vs_genl_ops
, ARRAY_SIZE(ip_vs_genl_ops
));
3674 static void ip_vs_genl_unregister(void)
3676 genl_unregister_family(&ip_vs_genl_family
);
3679 /* End of Generic Netlink interface definitions */
3682 * per netns intit/exit func.
3684 #ifdef CONFIG_SYSCTL
3685 static int __net_init
ip_vs_control_net_init_sysctl(struct net
*net
)
3688 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3689 struct ctl_table
*tbl
;
3691 atomic_set(&ipvs
->dropentry
, 0);
3692 spin_lock_init(&ipvs
->dropentry_lock
);
3693 spin_lock_init(&ipvs
->droppacket_lock
);
3694 spin_lock_init(&ipvs
->securetcp_lock
);
3696 if (!net_eq(net
, &init_net
)) {
3697 tbl
= kmemdup(vs_vars
, sizeof(vs_vars
), GFP_KERNEL
);
3702 /* Initialize sysctl defaults */
3704 ipvs
->sysctl_amemthresh
= 1024;
3705 tbl
[idx
++].data
= &ipvs
->sysctl_amemthresh
;
3706 ipvs
->sysctl_am_droprate
= 10;
3707 tbl
[idx
++].data
= &ipvs
->sysctl_am_droprate
;
3708 tbl
[idx
++].data
= &ipvs
->sysctl_drop_entry
;
3709 tbl
[idx
++].data
= &ipvs
->sysctl_drop_packet
;
3710 #ifdef CONFIG_IP_VS_NFCT
3711 tbl
[idx
++].data
= &ipvs
->sysctl_conntrack
;
3713 tbl
[idx
++].data
= &ipvs
->sysctl_secure_tcp
;
3714 ipvs
->sysctl_snat_reroute
= 1;
3715 tbl
[idx
++].data
= &ipvs
->sysctl_snat_reroute
;
3716 ipvs
->sysctl_sync_ver
= 1;
3717 tbl
[idx
++].data
= &ipvs
->sysctl_sync_ver
;
3718 ipvs
->sysctl_sync_ports
= 1;
3719 tbl
[idx
++].data
= &ipvs
->sysctl_sync_ports
;
3720 ipvs
->sysctl_sync_qlen_max
= nr_free_buffer_pages() / 32;
3721 tbl
[idx
++].data
= &ipvs
->sysctl_sync_qlen_max
;
3722 ipvs
->sysctl_sync_sock_size
= 0;
3723 tbl
[idx
++].data
= &ipvs
->sysctl_sync_sock_size
;
3724 tbl
[idx
++].data
= &ipvs
->sysctl_cache_bypass
;
3725 tbl
[idx
++].data
= &ipvs
->sysctl_expire_nodest_conn
;
3726 tbl
[idx
++].data
= &ipvs
->sysctl_expire_quiescent_template
;
3727 ipvs
->sysctl_sync_threshold
[0] = DEFAULT_SYNC_THRESHOLD
;
3728 ipvs
->sysctl_sync_threshold
[1] = DEFAULT_SYNC_PERIOD
;
3729 tbl
[idx
].data
= &ipvs
->sysctl_sync_threshold
;
3730 tbl
[idx
++].maxlen
= sizeof(ipvs
->sysctl_sync_threshold
);
3731 ipvs
->sysctl_sync_refresh_period
= DEFAULT_SYNC_REFRESH_PERIOD
;
3732 tbl
[idx
++].data
= &ipvs
->sysctl_sync_refresh_period
;
3733 ipvs
->sysctl_sync_retries
= clamp_t(int, DEFAULT_SYNC_RETRIES
, 0, 3);
3734 tbl
[idx
++].data
= &ipvs
->sysctl_sync_retries
;
3735 tbl
[idx
++].data
= &ipvs
->sysctl_nat_icmp_send
;
3736 ipvs
->sysctl_pmtu_disc
= 1;
3737 tbl
[idx
++].data
= &ipvs
->sysctl_pmtu_disc
;
3740 ipvs
->sysctl_hdr
= register_net_sysctl(net
, "net/ipv4/vs", tbl
);
3741 if (ipvs
->sysctl_hdr
== NULL
) {
3742 if (!net_eq(net
, &init_net
))
3746 ip_vs_start_estimator(net
, &ipvs
->tot_stats
);
3747 ipvs
->sysctl_tbl
= tbl
;
3748 /* Schedule defense work */
3749 INIT_DELAYED_WORK(&ipvs
->defense_work
, defense_work_handler
);
3750 schedule_delayed_work(&ipvs
->defense_work
, DEFENSE_TIMER_PERIOD
);
3755 static void __net_exit
ip_vs_control_net_cleanup_sysctl(struct net
*net
)
3757 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3759 cancel_delayed_work_sync(&ipvs
->defense_work
);
3760 cancel_work_sync(&ipvs
->defense_work
.work
);
3761 unregister_net_sysctl_table(ipvs
->sysctl_hdr
);
3766 static int __net_init
ip_vs_control_net_init_sysctl(struct net
*net
) { return 0; }
3767 static void __net_exit
ip_vs_control_net_cleanup_sysctl(struct net
*net
) { }
3771 static struct notifier_block ip_vs_dst_notifier
= {
3772 .notifier_call
= ip_vs_dst_event
,
3775 int __net_init
ip_vs_control_net_init(struct net
*net
)
3778 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3780 rwlock_init(&ipvs
->rs_lock
);
3782 /* Initialize rs_table */
3783 for (idx
= 0; idx
< IP_VS_RTAB_SIZE
; idx
++)
3784 INIT_LIST_HEAD(&ipvs
->rs_table
[idx
]);
3786 INIT_LIST_HEAD(&ipvs
->dest_trash
);
3787 atomic_set(&ipvs
->ftpsvc_counter
, 0);
3788 atomic_set(&ipvs
->nullsvc_counter
, 0);
3791 ipvs
->tot_stats
.cpustats
= alloc_percpu(struct ip_vs_cpu_stats
);
3792 if (!ipvs
->tot_stats
.cpustats
)
3795 spin_lock_init(&ipvs
->tot_stats
.lock
);
3797 proc_net_fops_create(net
, "ip_vs", 0, &ip_vs_info_fops
);
3798 proc_net_fops_create(net
, "ip_vs_stats", 0, &ip_vs_stats_fops
);
3799 proc_net_fops_create(net
, "ip_vs_stats_percpu", 0,
3800 &ip_vs_stats_percpu_fops
);
3802 if (ip_vs_control_net_init_sysctl(net
))
3808 free_percpu(ipvs
->tot_stats
.cpustats
);
3812 void __net_exit
ip_vs_control_net_cleanup(struct net
*net
)
3814 struct netns_ipvs
*ipvs
= net_ipvs(net
);
3816 ip_vs_trash_cleanup(net
);
3817 ip_vs_stop_estimator(net
, &ipvs
->tot_stats
);
3818 ip_vs_control_net_cleanup_sysctl(net
);
3819 proc_net_remove(net
, "ip_vs_stats_percpu");
3820 proc_net_remove(net
, "ip_vs_stats");
3821 proc_net_remove(net
, "ip_vs");
3822 free_percpu(ipvs
->tot_stats
.cpustats
);
3825 int __init
ip_vs_register_nl_ioctl(void)
3829 ret
= nf_register_sockopt(&ip_vs_sockopts
);
3831 pr_err("cannot register sockopt.\n");
3835 ret
= ip_vs_genl_register();
3837 pr_err("cannot register Generic Netlink interface.\n");
3843 nf_unregister_sockopt(&ip_vs_sockopts
);
3848 void ip_vs_unregister_nl_ioctl(void)
3850 ip_vs_genl_unregister();
3851 nf_unregister_sockopt(&ip_vs_sockopts
);
3854 int __init
ip_vs_control_init(void)
3861 /* Initialize svc_table, ip_vs_svc_fwm_table, rs_table */
3862 for (idx
= 0; idx
< IP_VS_SVC_TAB_SIZE
; idx
++) {
3863 INIT_LIST_HEAD(&ip_vs_svc_table
[idx
]);
3864 INIT_LIST_HEAD(&ip_vs_svc_fwm_table
[idx
]);
3867 smp_wmb(); /* Do we really need it now ? */
3869 ret
= register_netdevice_notifier(&ip_vs_dst_notifier
);
3878 void ip_vs_control_cleanup(void)
3881 unregister_netdevice_notifier(&ip_vs_dst_notifier
);