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IPVS: netns awareness to ip_vs_est

Browse Source 
All variables moved to struct ipvs,
most external changes fixed (i.e. init_net removed)

*v3
 timer per ns instead of a common timer in estimator.

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 14:44:54 +01:00 committed by Simon Horman
parent ab8a5e8408
commit 29c2026fd4
4 changed files with 64 additions and 50 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
include/net/ip_vs.h
View File

@ -1004,8 +1004,8 @@ extern void ip_vs_sync_cleanup(void);
*/
extern int ip_vs_estimator_init(void);
extern void ip_vs_estimator_cleanup(void);
extern void ip_vs_new_estimator(struct ip_vs_stats *stats);
extern void ip_vs_kill_estimator(struct ip_vs_stats *stats);
extern void ip_vs_new_estimator(struct net *net, struct ip_vs_stats *stats);
extern void ip_vs_kill_estimator(struct net *net, struct ip_vs_stats *stats);
extern void ip_vs_zero_estimator(struct ip_vs_stats *stats);
/*

4
include/net/netns/ip_vs.h
View File

@ -70,6 +70,10 @@ struct netns_ipvs {
int sysctl_lblcr_expiration;
struct ctl_table_header *lblcr_ctl_header;
struct ctl_table *lblcr_ctl_table;
/* ip_vs_est */
struct list_head est_list; /* estimator list */
spinlock_t est_lock;
struct timer_list est_timer; /* Estimation timer */
};
#endif /* IP_VS_H_ */

20
net/netfilter/ipvs/ip_vs_ctl.c
View File

@ -816,7 +816,7 @@ __ip_vs_update_dest(struct ip_vs_service *svc, struct ip_vs_dest *dest,
spin_unlock(&dest->dst_lock);
if (add)
ip_vs_new_estimator(&dest->stats);
ip_vs_new_estimator(svc->net, &dest->stats);
write_lock_bh(&__ip_vs_svc_lock);
@ -1009,9 +1009,9 @@ ip_vs_edit_dest(struct ip_vs_service *svc, struct ip_vs_dest_user_kern *udest)
/*
* Delete a destination (must be already unlinked from the service)
*/
static void __ip_vs_del_dest(struct ip_vs_dest *dest)
static void __ip_vs_del_dest(struct net *net, struct ip_vs_dest *dest)
{
ip_vs_kill_estimator(&dest->stats);
ip_vs_kill_estimator(net, &dest->stats);
/*
* Remove it from the d-linked list with the real services.
@ -1080,6 +1080,7 @@ 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);
@ -1108,7 +1109,7 @@ ip_vs_del_dest(struct ip_vs_service *svc, struct ip_vs_dest_user_kern *udest)
/*
* Delete the destination
*/
__ip_vs_del_dest(dest);
__ip_vs_del_dest(net, dest);
LeaveFunction(2);
@ -1197,7 +1198,7 @@ ip_vs_add_service(struct net *net, struct ip_vs_service_user_kern *u,
else if (svc->port == 0)
atomic_inc(&ip_vs_nullsvc_counter);
ip_vs_new_estimator(&svc->stats);
ip_vs_new_estimator(net, &svc->stats);
/* Count only IPv4 services for old get/setsockopt interface */
if (svc->af == AF_INET)
@ -1345,7 +1346,7 @@ static void __ip_vs_del_service(struct ip_vs_service *svc)
if (svc->af == AF_INET)
ip_vs_num_services--;
ip_vs_kill_estimator(&svc->stats);
ip_vs_kill_estimator(svc->net, &svc->stats);
/* Unbind scheduler */
old_sched = svc->scheduler;
@ -1368,7 +1369,7 @@ static void __ip_vs_del_service(struct ip_vs_service *svc)
*/
list_for_each_entry_safe(dest, nxt, &svc->destinations, n_list) {
__ip_vs_unlink_dest(svc, dest, 0);
__ip_vs_del_dest(dest);
__ip_vs_del_dest(svc->net, dest);
}
/*
@ -3460,7 +3461,7 @@ int __net_init __ip_vs_control_init(struct net *net)
vs_vars);
if (sysctl_header == NULL)
goto err_reg;
ip_vs_new_estimator(&ip_vs_stats);
ip_vs_new_estimator(net, &ip_vs_stats);
return 0;
err_reg:
@ -3472,7 +3473,7 @@ static void __net_exit __ip_vs_control_cleanup(struct net *net)
if (!net_eq(net, &init_net)) /* netns not enabled yet */
return;
ip_vs_kill_estimator(&ip_vs_stats);
ip_vs_kill_estimator(net, &ip_vs_stats);
unregister_net_sysctl_table(sysctl_header);
proc_net_remove(net, "ip_vs_stats");
proc_net_remove(net, "ip_vs");
@ -3536,7 +3537,6 @@ void ip_vs_control_cleanup(void)
ip_vs_trash_cleanup();
cancel_delayed_work_sync(&defense_work);
cancel_work_sync(&defense_work.work);
ip_vs_kill_estimator(&ip_vs_stats);
unregister_pernet_subsys(&ipvs_control_ops);
ip_vs_genl_unregister();
nf_unregister_sockopt(&ip_vs_sockopts);

86
net/netfilter/ipvs/ip_vs_est.c
View File

@ -8,8 +8,12 @@
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* Changes:
*
* Changes: Hans Schillstrom <hans.schillstrom@ericsson.com>
* Network name space (netns) aware.
* Global data moved to netns i.e struct netns_ipvs
* Affected data: est_list and est_lock.
* estimation_timer() runs with timer per netns.
* get_stats()) do the per cpu summing.
*/
#define KMSG_COMPONENT "IPVS"
@ -48,12 +52,6 @@
*/
static void estimation_timer(unsigned long arg);
static LIST_HEAD(est_list);
static DEFINE_SPINLOCK(est_lock);
static DEFINE_TIMER(est_timer, estimation_timer, 0, 0);
static void estimation_timer(unsigned long arg)
{
struct ip_vs_estimator *e;
@ -62,9 +60,12 @@ static void estimation_timer(unsigned long arg)
u32 n_inpkts, n_outpkts;
u64 n_inbytes, n_outbytes;
u32 rate;
struct net *net = (struct net *)arg;
struct netns_ipvs *ipvs;
spin_lock(&est_lock);
list_for_each_entry(e, &est_list, list) {
ipvs = net_ipvs(net);
spin_lock(&ipvs->est_lock);
list_for_each_entry(e, &ipvs->est_list, list) {
s = container_of(e, struct ip_vs_stats, est);
spin_lock(&s->lock);
@ -75,38 +76,39 @@ static void estimation_timer(unsigned long arg)
n_outbytes = s->ustats.outbytes;
/* scaled by 2^10, but divided 2 seconds */
rate = (n_conns - e->last_conns)<<9;
rate = (n_conns - e->last_conns) << 9;
e->last_conns = n_conns;
e->cps += ((long)rate - (long)e->cps)>>2;
s->ustats.cps = (e->cps+0x1FF)>>10;
e->cps += ((long)rate - (long)e->cps) >> 2;
s->ustats.cps = (e->cps + 0x1FF) >> 10;
rate = (n_inpkts - e->last_inpkts)<<9;
rate = (n_inpkts - e->last_inpkts) << 9;
e->last_inpkts = n_inpkts;
e->inpps += ((long)rate - (long)e->inpps)>>2;
s->ustats.inpps = (e->inpps+0x1FF)>>10;
e->inpps += ((long)rate - (long)e->inpps) >> 2;
s->ustats.inpps = (e->inpps + 0x1FF) >> 10;
rate = (n_outpkts - e->last_outpkts)<<9;
rate = (n_outpkts - e->last_outpkts) << 9;
e->last_outpkts = n_outpkts;
e->outpps += ((long)rate - (long)e->outpps)>>2;
s->ustats.outpps = (e->outpps+0x1FF)>>10;
e->outpps += ((long)rate - (long)e->outpps) >> 2;
s->ustats.outpps = (e->outpps + 0x1FF) >> 10;
rate = (n_inbytes - e->last_inbytes)<<4;
rate = (n_inbytes - e->last_inbytes) << 4;
e->last_inbytes = n_inbytes;
e->inbps += ((long)rate - (long)e->inbps)>>2;
s->ustats.inbps = (e->inbps+0xF)>>5;
e->inbps += ((long)rate - (long)e->inbps) >> 2;
s->ustats.inbps = (e->inbps + 0xF) >> 5;
rate = (n_outbytes - e->last_outbytes)<<4;
rate = (n_outbytes - e->last_outbytes) << 4;
e->last_outbytes = n_outbytes;
e->outbps += ((long)rate - (long)e->outbps)>>2;
s->ustats.outbps = (e->outbps+0xF)>>5;
e->outbps += ((long)rate - (long)e->outbps) >> 2;
s->ustats.outbps = (e->outbps + 0xF) >> 5;
spin_unlock(&s->lock);
}
spin_unlock(&est_lock);
mod_timer(&est_timer, jiffies + 2*HZ);
spin_unlock(&ipvs->est_lock);
mod_timer(&ipvs->est_timer, jiffies + 2*HZ);
}
void ip_vs_new_estimator(struct ip_vs_stats *stats)
void ip_vs_new_estimator(struct net *net, struct ip_vs_stats *stats)
{
struct netns_ipvs *ipvs = net_ipvs(net);
struct ip_vs_estimator *est = &stats->est;
INIT_LIST_HEAD(&est->list);
@ -126,18 +128,19 @@ void ip_vs_new_estimator(struct ip_vs_stats *stats)
est->last_outbytes = stats->ustats.outbytes;
est->outbps = stats->ustats.outbps<<5;
spin_lock_bh(&est_lock);
list_add(&est->list, &est_list);
spin_unlock_bh(&est_lock);
spin_lock_bh(&ipvs->est_lock);
list_add(&est->list, &ipvs->est_list);
spin_unlock_bh(&ipvs->est_lock);
}
void ip_vs_kill_estimator(struct ip_vs_stats *stats)
void ip_vs_kill_estimator(struct net *net, struct ip_vs_stats *stats)
{
struct netns_ipvs *ipvs = net_ipvs(net);
struct ip_vs_estimator *est = &stats->est;
spin_lock_bh(&est_lock);
spin_lock_bh(&ipvs->est_lock);
list_del(&est->list);
spin_unlock_bh(&est_lock);
spin_unlock_bh(&ipvs->est_lock);
}
void ip_vs_zero_estimator(struct ip_vs_stats *stats)
@ -159,14 +162,25 @@ void ip_vs_zero_estimator(struct ip_vs_stats *stats)
static int __net_init __ip_vs_estimator_init(struct net *net)
{
struct netns_ipvs *ipvs = net_ipvs(net);
if (!net_eq(net, &init_net)) /* netns not enabled yet */
return -EPERM;
INIT_LIST_HEAD(&ipvs->est_list);
spin_lock_init(&ipvs->est_lock);
setup_timer(&ipvs->est_timer, estimation_timer, (unsigned long)net);
mod_timer(&ipvs->est_timer, jiffies + 2 * HZ);
return 0;
}
static void __net_exit __ip_vs_estimator_exit(struct net *net)
{
del_timer_sync(&net_ipvs(net)->est_timer);
}
static struct pernet_operations ip_vs_app_ops = {
.init = __ip_vs_estimator_init,
.exit = __ip_vs_estimator_exit,
};
int __init ip_vs_estimator_init(void)
@ -174,14 +188,10 @@ int __init ip_vs_estimator_init(void)
int rv;
rv = register_pernet_subsys(&ip_vs_app_ops);
if (rv < 0)
return rv;
mod_timer(&est_timer, jiffies + 2 * HZ);
return rv;
}
void ip_vs_estimator_cleanup(void)
{
del_timer_sync(&est_timer);
unregister_pernet_subsys(&ip_vs_app_ops);
}