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IPVS: netns, ip_vs_ctl local vars moved to ipvs struct.

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Moving global vars to ipvs struct, except for svc table lock.
Next patch for ctl will be drop-rate handling.

*v3
__ip_vs_mutex remains global
 ip_vs_conntrack_enabled(struct netns_ipvs *ipvs)

Signed-off-by: Hans Schillstrom <hans.schillstrom@ericsson.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
This commit is contained in:
Hans Schillstrom 2011-01-03 14:44:58 +01:00 committed by Simon Horman
parent 6e67e586e7
commit a0840e2e16
9 changed files with 265 additions and 216 deletions
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27
include/net/ip_vs.h
View File

@ -41,7 +41,7 @@ static inline struct netns_ipvs *net_ipvs(struct net* net)
* Get net ptr from skb in traffic cases
* use skb_sknet when call is from userland (ioctl or netlink)
*/
static inline struct net *skb_net(struct sk_buff *skb)
static inline struct net *skb_net(const struct sk_buff *skb)
{
#ifdef CONFIG_NET_NS
#ifdef CONFIG_IP_VS_DEBUG
@ -69,7 +69,7 @@ static inline struct net *skb_net(struct sk_buff *skb)
#endif
}
static inline struct net *skb_sknet(struct sk_buff *skb)
static inline struct net *skb_sknet(const struct sk_buff *skb)
{
#ifdef CONFIG_NET_NS
#ifdef CONFIG_IP_VS_DEBUG
@ -1023,13 +1023,6 @@ extern int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb,
/*
* IPVS control data and functions (from ip_vs_ctl.c)
*/
extern int sysctl_ip_vs_cache_bypass;
extern int sysctl_ip_vs_expire_nodest_conn;
extern int sysctl_ip_vs_expire_quiescent_template;
extern int sysctl_ip_vs_sync_threshold[2];
extern int sysctl_ip_vs_nat_icmp_send;
extern int sysctl_ip_vs_conntrack;
extern int sysctl_ip_vs_snat_reroute;
extern struct ip_vs_stats ip_vs_stats;
extern const struct ctl_path net_vs_ctl_path[];
extern int sysctl_ip_vs_sync_ver;
@ -1119,11 +1112,13 @@ extern int ip_vs_icmp_xmit_v6
extern int ip_vs_drop_rate;
extern int ip_vs_drop_counter;
static __inline__ int ip_vs_todrop(void)
static inline int ip_vs_todrop(struct netns_ipvs *ipvs)
{
if (!ip_vs_drop_rate) return 0;
if (--ip_vs_drop_counter > 0) return 0;
ip_vs_drop_counter = ip_vs_drop_rate;
if (!ipvs->drop_rate)
return 0;
if (--ipvs->drop_counter > 0)
return 0;
ipvs->drop_counter = ipvs->drop_rate;
return 1;
}
@ -1211,9 +1206,9 @@ static inline void ip_vs_notrack(struct sk_buff *skb)
* Netfilter connection tracking
* (from ip_vs_nfct.c)
*/
static inline int ip_vs_conntrack_enabled(void)
static inline int ip_vs_conntrack_enabled(struct netns_ipvs *ipvs)
{
return sysctl_ip_vs_conntrack;
return ipvs->sysctl_conntrack;
}
extern void ip_vs_update_conntrack(struct sk_buff *skb, struct ip_vs_conn *cp,
@ -1226,7 +1221,7 @@ extern void ip_vs_conn_drop_conntrack(struct ip_vs_conn *cp);
#else
static inline int ip_vs_conntrack_enabled(void)
static inline int ip_vs_conntrack_enabled(struct netns_ipvs *ipvs)
{
return 0;
}

37
include/net/netns/ip_vs.h
View File

@ -61,13 +61,46 @@ struct netns_ipvs {
struct list_head sctp_apps[SCTP_APP_TAB_SIZE];
spinlock_t sctp_app_lock;
#endif
/* ip_vs_conn */
atomic_t conn_count; /* connection counter */
/* ip_vs_ctl */
struct ip_vs_stats *tot_stats; /* Statistics & est. */
struct ip_vs_cpu_stats __percpu *cpustats; /* Stats per cpu */
seqcount_t *ustats_seq; /* u64 read retry */
/* ip_vs_conn */
atomic_t conn_count; /* connection counter */
int num_services; /* no of virtual services */
/* 1/rate drop and drop-entry variables */
int drop_rate;
int drop_counter;
atomic_t dropentry;
/* locks in ctl.c */
spinlock_t dropentry_lock; /* drop entry handling */
spinlock_t droppacket_lock; /* drop packet handling */
spinlock_t securetcp_lock; /* state and timeout tables */
rwlock_t rs_lock; /* real services table */
/* semaphore for IPVS sockopts. And, [gs]etsockopt may sleep. */
struct lock_class_key ctl_key; /* ctl_mutex debuging */
/* sys-ctl struct */
struct ctl_table_header *sysctl_hdr;
struct ctl_table *sysctl_tbl;
/* sysctl variables */
int sysctl_amemthresh;
int sysctl_am_droprate;
int sysctl_drop_entry;
int sysctl_drop_packet;
int sysctl_secure_tcp;
#ifdef CONFIG_IP_VS_NFCT
int sysctl_conntrack;
#endif
int sysctl_snat_reroute;
int sysctl_sync_ver;
int sysctl_cache_bypass;
int sysctl_expire_nodest_conn;
int sysctl_expire_quiescent_template;
int sysctl_sync_threshold[2];
int sysctl_nat_icmp_send;
/* ip_vs_lblc */
int sysctl_lblc_expiration;
struct ctl_table_header *lblc_ctl_header;

7
net/netfilter/ipvs/ip_vs_conn.c
View File

@ -686,13 +686,14 @@ static inline void ip_vs_unbind_dest(struct ip_vs_conn *cp)
int ip_vs_check_template(struct ip_vs_conn *ct)
{
struct ip_vs_dest *dest = ct->dest;
struct netns_ipvs *ipvs = net_ipvs(ip_vs_conn_net(ct));
/*
* Checking the dest server status.
*/
if ((dest == NULL) ||
!(dest->flags & IP_VS_DEST_F_AVAILABLE) ||
(sysctl_ip_vs_expire_quiescent_template &&
(ipvs->sysctl_expire_quiescent_template &&
(atomic_read(&dest->weight) == 0))) {
IP_VS_DBG_BUF(9, "check_template: dest not available for "
"protocol %s s:%s:%d v:%s:%d "
@ -879,7 +880,7 @@ ip_vs_conn_new(const struct ip_vs_conn_param *p,
* IP_VS_CONN_F_ONE_PACKET too.
*/
if (ip_vs_conntrack_enabled())
if (ip_vs_conntrack_enabled(ipvs))
cp->flags |= IP_VS_CONN_F_NFCT;
/* Hash it in the ip_vs_conn_tab finally */
@ -1198,7 +1199,7 @@ static void ip_vs_conn_flush(struct net *net)
struct ip_vs_conn *cp;
struct netns_ipvs *ipvs = net_ipvs(net);
flush_again:
flush_again:
for (idx = 0; idx < ip_vs_conn_tab_size; idx++) {
/*
* Lock is actually needed in this loop.

34
net/netfilter/ipvs/ip_vs_core.c
View File

@ -499,6 +499,7 @@ ip_vs_schedule(struct ip_vs_service *svc, struct sk_buff *skb,
int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb,
struct ip_vs_proto_data *pd)
{
struct netns_ipvs *ipvs;
__be16 _ports[2], *pptr;
struct ip_vs_iphdr iph;
int unicast;
@ -521,7 +522,8 @@ int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb,
/* if it is fwmark-based service, the cache_bypass sysctl is up
and the destination is a non-local unicast, then create
a cache_bypass connection entry */
if (sysctl_ip_vs_cache_bypass && svc->fwmark && unicast) {
ipvs = net_ipvs(skb_net(skb));
if (ipvs->sysctl_cache_bypass && svc->fwmark && unicast) {
int ret, cs;
struct ip_vs_conn *cp;
unsigned int flags = (svc->flags & IP_VS_SVC_F_ONEPACKET &&
@ -733,6 +735,7 @@ static int handle_response_icmp(int af, struct sk_buff *skb,
struct ip_vs_protocol *pp,
unsigned int offset, unsigned int ihl)
{
struct netns_ipvs *ipvs;
unsigned int verdict = NF_DROP;
if (IP_VS_FWD_METHOD(cp) != 0) {
@ -754,6 +757,8 @@ static int handle_response_icmp(int af, struct sk_buff *skb,
if (!skb_make_writable(skb, offset))
goto out;
ipvs = net_ipvs(skb_net(skb));
#ifdef CONFIG_IP_VS_IPV6
if (af == AF_INET6)
ip_vs_nat_icmp_v6(skb, pp, cp, 1);
@ -763,11 +768,11 @@ static int handle_response_icmp(int af, struct sk_buff *skb,
#ifdef CONFIG_IP_VS_IPV6
if (af == AF_INET6) {
if (sysctl_ip_vs_snat_reroute && ip6_route_me_harder(skb) != 0)
if (ipvs->sysctl_snat_reroute && ip6_route_me_harder(skb) != 0)
goto out;
} else
#endif
if ((sysctl_ip_vs_snat_reroute ||
if ((ipvs->sysctl_snat_reroute ||
skb_rtable(skb)->rt_flags & RTCF_LOCAL) &&
ip_route_me_harder(skb, RTN_LOCAL) != 0)
goto out;
@ -979,6 +984,7 @@ handle_response(int af, struct sk_buff *skb, struct ip_vs_proto_data *pd,
struct ip_vs_conn *cp, int ihl)
{
struct ip_vs_protocol *pp = pd->pp;
struct netns_ipvs *ipvs;
IP_VS_DBG_PKT(11, af, pp, skb, 0, "Outgoing packet");
@ -1014,13 +1020,15 @@ handle_response(int af, struct sk_buff *skb, struct ip_vs_proto_data *pd,
* if it came from this machine itself. So re-compute
* the routing information.
*/
ipvs = net_ipvs(skb_net(skb));
#ifdef CONFIG_IP_VS_IPV6
if (af == AF_INET6) {
if (sysctl_ip_vs_snat_reroute && ip6_route_me_harder(skb) != 0)
if (ipvs->sysctl_snat_reroute && ip6_route_me_harder(skb) != 0)
goto drop;
} else
#endif
if ((sysctl_ip_vs_snat_reroute ||
if ((ipvs->sysctl_snat_reroute ||
skb_rtable(skb)->rt_flags & RTCF_LOCAL) &&
ip_route_me_harder(skb, RTN_LOCAL) != 0)
goto drop;
@ -1057,6 +1065,7 @@ ip_vs_out(unsigned int hooknum, struct sk_buff *skb, int af)
struct ip_vs_protocol *pp;
struct ip_vs_proto_data *pd;
struct ip_vs_conn *cp;
struct netns_ipvs *ipvs;
EnterFunction(11);
@ -1131,10 +1140,11 @@ ip_vs_out(unsigned int hooknum, struct sk_buff *skb, int af)
* Check if the packet belongs to an existing entry
*/
cp = pp->conn_out_get(af, skb, &iph, iph.len, 0);
ipvs = net_ipvs(net);
if (likely(cp))
return handle_response(af, skb, pd, cp, iph.len);
if (sysctl_ip_vs_nat_icmp_send &&
if (ipvs->sysctl_nat_icmp_send &&
(pp->protocol == IPPROTO_TCP ||
pp->protocol == IPPROTO_UDP ||
pp->protocol == IPPROTO_SCTP)) {
@ -1580,7 +1590,7 @@ ip_vs_in(unsigned int hooknum, struct sk_buff *skb, int af)
if (cp->dest && !(cp->dest->flags & IP_VS_DEST_F_AVAILABLE)) {
/* the destination server is not available */
if (sysctl_ip_vs_expire_nodest_conn) {
if (ipvs->sysctl_expire_nodest_conn) {
/* try to expire the connection immediately */
ip_vs_conn_expire_now(cp);
}
@ -1610,15 +1620,15 @@ ip_vs_in(unsigned int hooknum, struct sk_buff *skb, int af)
*/
if (cp->flags & IP_VS_CONN_F_ONE_PACKET)
pkts = sysctl_ip_vs_sync_threshold[0];
pkts = ipvs->sysctl_sync_threshold[0];
else
pkts = atomic_add_return(1, &cp->in_pkts);
if ((ipvs->sync_state & IP_VS_STATE_MASTER) &&
cp->protocol == IPPROTO_SCTP) {
if ((cp->state == IP_VS_SCTP_S_ESTABLISHED &&
(pkts % sysctl_ip_vs_sync_threshold[1]
== sysctl_ip_vs_sync_threshold[0])) ||
(pkts % ipvs->sysctl_sync_threshold[1]
== ipvs->sysctl_sync_threshold[0])) ||
(cp->old_state != cp->state &&
((cp->state == IP_VS_SCTP_S_CLOSED) ||
(cp->state == IP_VS_SCTP_S_SHUT_ACK_CLI) ||
@ -1632,8 +1642,8 @@ ip_vs_in(unsigned int hooknum, struct sk_buff *skb, int af)
else if ((ipvs->sync_state & IP_VS_STATE_MASTER) &&
(((cp->protocol != IPPROTO_TCP ||
cp->state == IP_VS_TCP_S_ESTABLISHED) &&
(pkts % sysctl_ip_vs_sync_threshold[1]
== sysctl_ip_vs_sync_threshold[0])) ||
(pkts % ipvs->sysctl_sync_threshold[1]
== ipvs->sysctl_sync_threshold[0])) ||
((cp->protocol == IPPROTO_TCP) && (cp->old_state != cp->state) &&
((cp->state == IP_VS_TCP_S_FIN_WAIT) ||
(cp->state == IP_VS_TCP_S_CLOSE) ||

361
net/netfilter/ipvs/ip_vs_ctl.c
View File

@ -58,42 +58,7 @@ static DEFINE_MUTEX(__ip_vs_mutex);
/* lock for service table */
static DEFINE_RWLOCK(__ip_vs_svc_lock);
/* lock for table with the real services */
static DEFINE_RWLOCK(__ip_vs_rs_lock);
/* lock for state and timeout tables */
static DEFINE_SPINLOCK(ip_vs_securetcp_lock);
/* lock for drop entry handling */
static DEFINE_SPINLOCK(__ip_vs_dropentry_lock);
/* lock for drop packet handling */
static DEFINE_SPINLOCK(__ip_vs_droppacket_lock);
/* 1/rate drop and drop-entry variables */
int ip_vs_drop_rate = 0;
int ip_vs_drop_counter = 0;
static atomic_t ip_vs_dropentry = ATOMIC_INIT(0);
/* number of virtual services */
static int ip_vs_num_services = 0;
/* sysctl variables */
static int sysctl_ip_vs_drop_entry = 0;
static int sysctl_ip_vs_drop_packet = 0;
static int sysctl_ip_vs_secure_tcp = 0;
static int sysctl_ip_vs_amemthresh = 1024;
static int sysctl_ip_vs_am_droprate = 10;
int sysctl_ip_vs_cache_bypass = 0;
int sysctl_ip_vs_expire_nodest_conn = 0;
int sysctl_ip_vs_expire_quiescent_template = 0;
int sysctl_ip_vs_sync_threshold[2] = { 3, 50 };
int sysctl_ip_vs_nat_icmp_send = 0;
#ifdef CONFIG_IP_VS_NFCT
int sysctl_ip_vs_conntrack;
#endif
int sysctl_ip_vs_snat_reroute = 1;
int sysctl_ip_vs_sync_ver = 1; /* Default version of sync proto */
#ifdef CONFIG_IP_VS_DEBUG
static int sysctl_ip_vs_debug_level = 0;
@ -142,73 +107,73 @@ static void update_defense_level(struct netns_ipvs *ipvs)
/* si_swapinfo(&i); */
/* availmem = availmem - (i.totalswap - i.freeswap); */
nomem = (availmem < sysctl_ip_vs_amemthresh);
nomem = (availmem < ipvs->sysctl_amemthresh);
local_bh_disable();
/* drop_entry */
spin_lock(&__ip_vs_dropentry_lock);
switch (sysctl_ip_vs_drop_entry) {
spin_lock(&ipvs->dropentry_lock);
switch (ipvs->sysctl_drop_entry) {
case 0:
atomic_set(&ip_vs_dropentry, 0);
atomic_set(&ipvs->dropentry, 0);
break;
case 1:
if (nomem) {
atomic_set(&ip_vs_dropentry, 1);
sysctl_ip_vs_drop_entry = 2;
atomic_set(&ipvs->dropentry, 1);
ipvs->sysctl_drop_entry = 2;
} else {
atomic_set(&ip_vs_dropentry, 0);
atomic_set(&ipvs->dropentry, 0);
}
break;
case 2:
if (nomem) {
atomic_set(&ip_vs_dropentry, 1);
atomic_set(&ipvs->dropentry, 1);
} else {
atomic_set(&ip_vs_dropentry, 0);
sysctl_ip_vs_drop_entry = 1;
atomic_set(&ipvs->dropentry, 0);
ipvs->sysctl_drop_entry = 1;
};
break;
case 3:
atomic_set(&ip_vs_dropentry, 1);
atomic_set(&ipvs->dropentry, 1);
break;
}
spin_unlock(&__ip_vs_dropentry_lock);
spin_unlock(&ipvs->dropentry_lock);
/* drop_packet */
spin_lock(&__ip_vs_droppacket_lock);
switch (sysctl_ip_vs_drop_packet) {
spin_lock(&ipvs->droppacket_lock);
switch (ipvs->sysctl_drop_packet) {
case 0:
ip_vs_drop_rate = 0;
ipvs->drop_rate = 0;
break;
case 1:
if (nomem) {
ip_vs_drop_rate = ip_vs_drop_counter
= sysctl_ip_vs_amemthresh /
(sysctl_ip_vs_amemthresh-availmem);
sysctl_ip_vs_drop_packet = 2;
ipvs->drop_rate = ipvs->drop_counter
= ipvs->sysctl_amemthresh /
(ipvs->sysctl_amemthresh-availmem);
ipvs->sysctl_drop_packet = 2;
} else {
ip_vs_drop_rate = 0;
ipvs->drop_rate = 0;
}
break;
case 2:
if (nomem) {
ip_vs_drop_rate = ip_vs_drop_counter
= sysctl_ip_vs_amemthresh /
(sysctl_ip_vs_amemthresh-availmem);
ipvs->drop_rate = ipvs->drop_counter
= ipvs->sysctl_amemthresh /
(ipvs->sysctl_amemthresh-availmem);
} else {
ip_vs_drop_rate = 0;
sysctl_ip_vs_drop_packet = 1;
ipvs->drop_rate = 0;
ipvs->sysctl_drop_packet = 1;
}
break;
case 3:
ip_vs_drop_rate = sysctl_ip_vs_am_droprate;
ipvs->drop_rate = ipvs->sysctl_am_droprate;
break;
}
spin_unlock(&__ip_vs_droppacket_lock);
spin_unlock(&ipvs->droppacket_lock);
/* secure_tcp */
spin_lock(&ip_vs_securetcp_lock);
switch (sysctl_ip_vs_secure_tcp) {
spin_lock(&ipvs->securetcp_lock);
switch (ipvs->sysctl_secure_tcp) {
case 0:
if (old_secure_tcp >= 2)
to_change = 0;
@ -217,7 +182,7 @@ static void update_defense_level(struct netns_ipvs *ipvs)
if (nomem) {
if (old_secure_tcp < 2)
to_change = 1;
sysctl_ip_vs_secure_tcp = 2;
ipvs->sysctl_secure_tcp = 2;
} else {
if (old_secure_tcp >= 2)
to_change = 0;
@ -230,7 +195,7 @@ static void update_defense_level(struct netns_ipvs *ipvs)
} else {
if (old_secure_tcp >= 2)
to_change = 0;
sysctl_ip_vs_secure_tcp = 1;
ipvs->sysctl_secure_tcp = 1;
}
break;
case 3:
@ -238,11 +203,11 @@ static void update_defense_level(struct netns_ipvs *ipvs)
to_change = 1;
break;
}
old_secure_tcp = sysctl_ip_vs_secure_tcp;
old_secure_tcp = ipvs->sysctl_secure_tcp;
if (to_change >= 0)
ip_vs_protocol_timeout_change(ipvs,
sysctl_ip_vs_secure_tcp > 1);
spin_unlock(&ip_vs_securetcp_lock);
ipvs->sysctl_secure_tcp > 1);
spin_unlock(&ipvs->securetcp_lock);
local_bh_enable();
}
@ -260,7 +225,7 @@ static void defense_work_handler(struct work_struct *work)
struct netns_ipvs *ipvs = net_ipvs(&init_net);
update_defense_level(ipvs);
if (atomic_read(&ip_vs_dropentry))
if (atomic_read(&ipvs->dropentry))
ip_vs_random_dropentry();
schedule_delayed_work(&defense_work, DEFENSE_TIMER_PERIOD);
@ -602,7 +567,7 @@ ip_vs_lookup_real_service(struct net *net, int af, __u16 protocol,
*/
hash = ip_vs_rs_hashkey(af, daddr, dport);
read_lock(&__ip_vs_rs_lock);
read_lock(&ipvs->rs_lock);
list_for_each_entry(dest, &ipvs->rs_table[hash], d_list) {
if ((dest->af == af)
&& ip_vs_addr_equal(af, &dest->addr, daddr)
@ -610,11 +575,11 @@ ip_vs_lookup_real_service(struct net *net, int af, __u16 protocol,
&& ((dest->protocol == protocol) ||
dest->vfwmark)) {
/* HIT */
read_unlock(&__ip_vs_rs_lock);
read_unlock(&ipvs->rs_lock);
return dest;
}
}
read_unlock(&__ip_vs_rs_lock);
read_unlock(&ipvs->rs_lock);
return NULL;
}
@ -788,9 +753,9 @@ __ip_vs_update_dest(struct ip_vs_service *svc, struct ip_vs_dest *dest,
* Put the real service in rs_table if not present.
* For now only for NAT!
*/
write_lock_bh(&__ip_vs_rs_lock);
write_lock_bh(&ipvs->rs_lock);
ip_vs_rs_hash(ipvs, dest);
write_unlock_bh(&__ip_vs_rs_lock);
write_unlock_bh(&ipvs->rs_lock);
}
atomic_set(&dest->conn_flags, conn_flags);
@ -1022,14 +987,16 @@ ip_vs_edit_dest(struct ip_vs_service *svc, struct ip_vs_dest_user_kern *udest)
*/
static void __ip_vs_del_dest(struct net *net, struct ip_vs_dest *dest)
{
struct netns_ipvs *ipvs = net_ipvs(net);
ip_vs_kill_estimator(net, &dest->stats);
/*
* Remove it from the d-linked list with the real services.
*/
write_lock_bh(&__ip_vs_rs_lock);
write_lock_bh(&ipvs->rs_lock);
ip_vs_rs_unhash(dest);
write_unlock_bh(&__ip_vs_rs_lock);
write_unlock_bh(&ipvs->rs_lock);
/*
* Decrease the refcnt of the dest, and free the dest
@ -1092,7 +1059,6 @@ static int
ip_vs_del_dest(struct ip_vs_service *svc, struct ip_vs_dest_user_kern *udest)
{
struct ip_vs_dest *dest;
struct net *net = svc->net;
__be16 dport = udest->port;
EnterFunction(2);
@ -1121,7 +1087,7 @@ ip_vs_del_dest(struct ip_vs_service *svc, struct ip_vs_dest_user_kern *udest)
/*
* Delete the destination
*/
__ip_vs_del_dest(net, dest);
__ip_vs_del_dest(svc->net, dest);
LeaveFunction(2);
@ -1140,6 +1106,7 @@ ip_vs_add_service(struct net *net, struct ip_vs_service_user_kern *u,
struct ip_vs_scheduler *sched = NULL;
struct ip_vs_pe *pe = NULL;
struct ip_vs_service *svc = NULL;
struct netns_ipvs *ipvs = net_ipvs(net);
/* increase the module use count */
ip_vs_use_count_inc();
@ -1219,7 +1186,7 @@ ip_vs_add_service(struct net *net, struct ip_vs_service_user_kern *u,
/* Count only IPv4 services for old get/setsockopt interface */
if (svc->af == AF_INET)
ip_vs_num_services++;
ipvs->num_services++;
/* Hash the service into the service table */
write_lock_bh(&__ip_vs_svc_lock);
@ -1359,12 +1326,13 @@ static void __ip_vs_del_service(struct ip_vs_service *svc)
struct ip_vs_dest *dest, *nxt;
struct ip_vs_scheduler *old_sched;
struct ip_vs_pe *old_pe;
struct netns_ipvs *ipvs = net_ipvs(svc->net);
pr_info("%s: enter\n", __func__);
/* Count only IPv4 services for old get/setsockopt interface */
if (svc->af == AF_INET)
ip_vs_num_services--;
ipvs->num_services--;
ip_vs_kill_estimator(svc->net, &svc->stats);
@ -1589,12 +1557,88 @@ proc_do_sync_mode(ctl_table *table, int write,
/*
* IPVS sysctl table (under the /proc/sys/net/ipv4/vs/)
* Do not change order or insert new entries without
* align with netns init in __ip_vs_control_init()
*/
static struct ctl_table vs_vars[] = {
{
.procname = "amemthresh",
.data = &sysctl_ip_vs_amemthresh,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
{
.procname = "am_droprate",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
{
.procname = "drop_entry",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_do_defense_mode,
},
{
.procname = "drop_packet",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_do_defense_mode,
},
#ifdef CONFIG_IP_VS_NFCT
{
.procname = "conntrack",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec,
},
#endif
{
.procname = "secure_tcp",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_do_defense_mode,
},
{
.procname = "snat_reroute",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec,
},
{
.procname = "sync_version",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_do_sync_mode,
},
{
.procname = "cache_bypass",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
{
.procname = "expire_nodest_conn",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
{
.procname = "expire_quiescent_template",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
{
.procname = "sync_threshold",
.maxlen =
sizeof(((struct netns_ipvs *)0)->sysctl_sync_threshold),
.mode = 0644,
.proc_handler = proc_do_sync_threshold,
},
{
.procname = "nat_icmp_send",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec,
@ -1608,57 +1652,6 @@ static struct ctl_table vs_vars[] = {
.proc_handler = proc_dointvec,
},
#endif
{
.procname = "am_droprate",
.data = &sysctl_ip_vs_am_droprate,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
{
.procname = "drop_entry",
.data = &sysctl_ip_vs_drop_entry,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_do_defense_mode,
},
{
.procname = "drop_packet",
.data = &sysctl_ip_vs_drop_packet,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_do_defense_mode,
},
#ifdef CONFIG_IP_VS_NFCT
{
.procname = "conntrack",
.data = &sysctl_ip_vs_conntrack,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec,
},
#endif
{
.procname = "secure_tcp",
.data = &sysctl_ip_vs_secure_tcp,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_do_defense_mode,
},
{
.procname = "snat_reroute",
.data = &sysctl_ip_vs_snat_reroute,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec,
},
{
.procname = "sync_version",
.data = &sysctl_ip_vs_sync_ver,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_do_sync_mode,
},
#if 0
{
.procname = "timeout_established",
@ -1745,41 +1738,6 @@ static struct ctl_table vs_vars[] = {
.proc_handler = proc_dointvec_jiffies,
},
#endif
{
.procname = "cache_bypass",
.data = &sysctl_ip_vs_cache_bypass,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
{
.procname = "expire_nodest_conn",
.data = &sysctl_ip_vs_expire_nodest_conn,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
{
.procname = "expire_quiescent_template",
.data = &sysctl_ip_vs_expire_quiescent_template,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
{
.procname = "sync_threshold",
.data = &sysctl_ip_vs_sync_threshold,
.maxlen = sizeof(sysctl_ip_vs_sync_threshold),
.mode = 0644,
.proc_handler = proc_do_sync_threshold,
},
{
.procname = "nat_icmp_send",
.data = &sysctl_ip_vs_nat_icmp_send,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
{ }
};
@ -1791,8 +1749,6 @@ const struct ctl_path net_vs_ctl_path[] = {
};
EXPORT_SYMBOL_GPL(net_vs_ctl_path);
static struct ctl_table_header * sysctl_header;
#ifdef CONFIG_PROC_FS
struct ip_vs_iter {
@ -2543,7 +2499,7 @@ do_ip_vs_get_ctl(struct sock *sk, int cmd, void __user *user, int *len)
struct ip_vs_getinfo info;
info.version = IP_VS_VERSION_CODE;
info.size = ip_vs_conn_tab_size;
info.num_services = ip_vs_num_services;
info.num_services = ipvs->num_services;
if (copy_to_user(user, &info, sizeof(info)) != 0)
ret = -EFAULT;
}
@ -3014,7 +2970,7 @@ static int ip_vs_genl_dump_dests(struct sk_buff *skb,
struct ip_vs_service *svc;
struct ip_vs_dest *dest;
struct nlattr *attrs[IPVS_CMD_ATTR_MAX + 1];
struct net *net;
struct net *net = skb_sknet(skb);
mutex_lock(&__ip_vs_mutex);
@ -3023,7 +2979,7 @@ static int ip_vs_genl_dump_dests(struct sk_buff *skb,
IPVS_CMD_ATTR_MAX, ip_vs_cmd_policy))
goto out_err;
net = skb_sknet(skb);
svc = ip_vs_genl_find_service(net, attrs[IPVS_CMD_ATTR_SERVICE]);
if (IS_ERR(svc) || svc == NULL)
goto out_err;
@ -3215,8 +3171,10 @@ static int ip_vs_genl_set_cmd(struct sk_buff *skb, struct genl_info *info)
int ret = 0, cmd;
int need_full_svc = 0, need_full_dest = 0;
struct net *net;
struct netns_ipvs *ipvs;
net = skb_sknet(skb);
ipvs = net_ipvs(net);
cmd = info->genlhdr->cmd;
mutex_lock(&__ip_vs_mutex);
@ -3326,8 +3284,10 @@ static int ip_vs_genl_get_cmd(struct sk_buff *skb, struct genl_info *info)
void *reply;
int ret, cmd, reply_cmd;
struct net *net;
struct netns_ipvs *ipvs;
net = skb_sknet(skb);
ipvs = net_ipvs(net);
cmd = info->genlhdr->cmd;
if (cmd == IPVS_CMD_GET_SERVICE)
@ -3530,9 +3490,21 @@ int __net_init __ip_vs_control_init(struct net *net)
{
int idx;
struct netns_ipvs *ipvs = net_ipvs(net);
struct ctl_table *tbl;
if (!net_eq(net, &init_net)) /* netns not enabled yet */
return -EPERM;
atomic_set(&ipvs->dropentry, 0);
spin_lock_init(&ipvs->dropentry_lock);
spin_lock_init(&ipvs->droppacket_lock);
spin_lock_init(&ipvs->securetcp_lock);
ipvs->rs_lock = __RW_LOCK_UNLOCKED(ipvs->rs_lock);
/* Initialize rs_table */
for (idx = 0; idx < IP_VS_RTAB_SIZE; idx++)
INIT_LIST_HEAD(&ipvs->rs_table[idx]);
/* procfs stats */
ipvs->tot_stats = kzalloc(sizeof(struct ip_vs_stats), GFP_KERNEL);
if (ipvs->tot_stats == NULL) {
@ -3553,14 +3525,51 @@ int __net_init __ip_vs_control_init(struct net *net)
proc_net_fops_create(net, "ip_vs_stats", 0, &ip_vs_stats_fops);
proc_net_fops_create(net, "ip_vs_stats_percpu", 0,
&ip_vs_stats_percpu_fops);
sysctl_header = register_net_sysctl_table(net, net_vs_ctl_path,
if (!net_eq(net, &init_net)) {
tbl = kmemdup(vs_vars, sizeof(vs_vars), GFP_KERNEL);
if (tbl == NULL)
goto err_dup;
} else
tbl = vs_vars;
/* Initialize sysctl defaults */
idx = 0;
ipvs->sysctl_amemthresh = 1024;
tbl[idx++].data = &ipvs->sysctl_amemthresh;
ipvs->sysctl_am_droprate = 10;
tbl[idx++].data = &ipvs->sysctl_am_droprate;
tbl[idx++].data = &ipvs->sysctl_drop_entry;
tbl[idx++].data = &ipvs->sysctl_drop_packet;
#ifdef CONFIG_IP_VS_NFCT
tbl[idx++].data = &ipvs->sysctl_conntrack;
#endif
tbl[idx++].data = &ipvs->sysctl_secure_tcp;
ipvs->sysctl_snat_reroute = 1;
tbl[idx++].data = &ipvs->sysctl_snat_reroute;
ipvs->sysctl_sync_ver = 1;
tbl[idx++].data = &ipvs->sysctl_sync_ver;
tbl[idx++].data = &ipvs->sysctl_cache_bypass;
tbl[idx++].data = &ipvs->sysctl_expire_nodest_conn;
tbl[idx++].data = &ipvs->sysctl_expire_quiescent_template;
ipvs->sysctl_sync_threshold[0] = 3;
ipvs->sysctl_sync_threshold[1] = 50;
tbl[idx].data = &ipvs->sysctl_sync_threshold;
tbl[idx++].maxlen = sizeof(ipvs->sysctl_sync_threshold);
tbl[idx++].data = &ipvs->sysctl_nat_icmp_send;
ipvs->sysctl_hdr = register_net_sysctl_table(net, net_vs_ctl_path,
vs_vars);
if (sysctl_header == NULL)
if (ipvs->sysctl_hdr == NULL)
goto err_reg;
ip_vs_new_estimator(net, ipvs->tot_stats);
ipvs->sysctl_tbl = tbl;
return 0;
err_reg:
if (!net_eq(net, &init_net))
kfree(tbl);
err_dup:
free_percpu(ipvs->cpustats);
err_alloc:
kfree(ipvs->tot_stats);
@ -3575,7 +3584,7 @@ static void __net_exit __ip_vs_control_cleanup(struct net *net)
return;
ip_vs_kill_estimator(net, ipvs->tot_stats);
unregister_net_sysctl_table(sysctl_header);
unregister_net_sysctl_table(ipvs->sysctl_hdr);
proc_net_remove(net, "ip_vs_stats_percpu");
proc_net_remove(net, "ip_vs_stats");
proc_net_remove(net, "ip_vs");

2
net/netfilter/ipvs/ip_vs_proto_sctp.c
View File

@ -34,7 +34,7 @@ sctp_conn_schedule(int af, struct sk_buff *skb, struct ip_vs_proto_data *pd,
&iph.daddr, sh->dest))) {
int ignored;
if (ip_vs_todrop()) {
if (ip_vs_todrop(net_ipvs(net))) {
/*
* It seems that we are very loaded.
* We have to drop this packet :(

2
net/netfilter/ipvs/ip_vs_proto_tcp.c
View File

@ -54,7 +54,7 @@ tcp_conn_schedule(int af, struct sk_buff *skb, struct ip_vs_proto_data *pd,
&iph.daddr, th->dest))) {
int ignored;
if (ip_vs_todrop()) {
if (ip_vs_todrop(net_ipvs(net))) {
/*
* It seems that we are very loaded.
* We have to drop this packet :(

2
net/netfilter/ipvs/ip_vs_proto_udp.c
View File

@ -50,7 +50,7 @@ udp_conn_schedule(int af, struct sk_buff *skb, struct ip_vs_proto_data *pd,
if (svc) {
int ignored;
if (ip_vs_todrop()) {
if (ip_vs_todrop(net_ipvs(net))) {
/*
* It seems that we are very loaded.
* We have to drop this packet :(

9
net/netfilter/ipvs/ip_vs_sync.c
View File

@ -394,7 +394,7 @@ void ip_vs_sync_switch_mode(struct net *net, int mode)
if (!ipvs->sync_state & IP_VS_STATE_MASTER)
return;
if (mode == sysctl_ip_vs_sync_ver || !ipvs->sync_buff)
if (mode == ipvs->sysctl_sync_ver || !ipvs->sync_buff)
return;
spin_lock_bh(&ipvs->sync_buff_lock);
@ -521,7 +521,7 @@ void ip_vs_sync_conn(struct net *net, struct ip_vs_conn *cp)
unsigned int len, pe_name_len, pad;
/* Handle old version of the protocol */
if (sysctl_ip_vs_sync_ver == 0) {
if (ipvs->sysctl_sync_ver == 0) {
ip_vs_sync_conn_v0(net, cp);
return;
}
@ -650,7 +650,7 @@ control:
if (cp->flags & IP_VS_CONN_F_TEMPLATE) {
int pkts = atomic_add_return(1, &cp->in_pkts);
if (pkts % sysctl_ip_vs_sync_threshold[1] != 1)
if (pkts % ipvs->sysctl_sync_threshold[1] != 1)
return;
}
goto sloop;
@ -724,6 +724,7 @@ static void ip_vs_proc_conn(struct net *net, struct ip_vs_conn_param *param,
{
struct ip_vs_dest *dest;
struct ip_vs_conn *cp;
struct netns_ipvs *ipvs = net_ipvs(net);
if (!(flags & IP_VS_CONN_F_TEMPLATE))
cp = ip_vs_conn_in_get(param);
@ -794,7 +795,7 @@ static void ip_vs_proc_conn(struct net *net, struct ip_vs_conn_param *param,
if (opt)
memcpy(&cp->in_seq, opt, sizeof(*opt));
atomic_set(&cp->in_pkts, sysctl_ip_vs_sync_threshold[0]);
atomic_set(&cp->in_pkts, ipvs->sysctl_sync_threshold[0]);
cp->state = state;
cp->old_state = cp->state;
/*