From: Hans Schillstrom <hans.schillstrom@xxxxxxxxxxxx>
This patch makes defense work timer per name-space,
A net ptr had to be added to the ipvs struct,
since it's needed by defense_work_handler.
Signed-off-by: Hans Schillstrom <hans.schillstrom@xxxxxxxxxxxx>
---
include/net/ip_vs.h | 2 +-
include/net/netns/ip_vs.h | 3 +++
net/netfilter/ipvs/ip_vs_conn.c | 5 +++--
net/netfilter/ipvs/ip_vs_core.c | 1 +
net/netfilter/ipvs/ip_vs_ctl.c | 20 +++++++++-----------
5 files changed, 17 insertions(+), 14 deletions(-)
diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index 99828f0..918382a 100644
--- a/include/net/ip_vs.h
+++ b/include/net/ip_vs.h
@@ -855,7 +855,7 @@ extern const char * ip_vs_state_name(__u16 proto, int state);
extern void ip_vs_tcp_conn_listen(struct net *net, struct ip_vs_conn *cp);
extern int ip_vs_check_template(struct ip_vs_conn *ct);
-extern void ip_vs_random_dropentry(void);
+extern void ip_vs_random_dropentry(struct net *net);
extern int ip_vs_conn_init(void);
extern void ip_vs_conn_cleanup(void);
diff --git a/include/net/netns/ip_vs.h b/include/net/netns/ip_vs.h
index 2e9a1b3..1c8c3c4 100644
--- a/include/net/netns/ip_vs.h
+++ b/include/net/netns/ip_vs.h
@@ -72,6 +72,7 @@ struct netns_ipvs {
int num_services; /* no of virtual services */
/* 1/rate drop and drop-entry variables */
+ struct delayed_work defense_work; /* Work handler */
int drop_rate;
int drop_counter;
atomic_t dropentry;
@@ -131,6 +132,8 @@ struct netns_ipvs {
/* multicast interface name */
char master_mcast_ifn[IP_VS_IFNAME_MAXLEN];
char backup_mcast_ifn[IP_VS_IFNAME_MAXLEN];
+ /* net name space ptr */
+ struct net *net; /* Needed by timer routines */
};
#endif /* IP_VS_H_ */
diff --git a/net/netfilter/ipvs/ip_vs_conn.c b/net/netfilter/ipvs/ip_vs_conn.c
index 5ba205a..28bdaf7 100644
--- a/net/netfilter/ipvs/ip_vs_conn.c
+++ b/net/netfilter/ipvs/ip_vs_conn.c
@@ -1138,7 +1138,7 @@ static inline int todrop_entry(struct ip_vs_conn *cp)
}
/* Called from keventd and must protect itself from softirqs */
-void ip_vs_random_dropentry(void)
+void ip_vs_random_dropentry(struct net *net)
{
int idx;
struct ip_vs_conn *cp;
@@ -1158,7 +1158,8 @@ void ip_vs_random_dropentry(void)
if (cp->flags & IP_VS_CONN_F_TEMPLATE)
/* connection template */
continue;
-
+ if (!ip_vs_conn_net_eq(cp, net))
+ continue;
if (cp->protocol == IPPROTO_TCP) {
switch(cp->state) {
case IP_VS_TCP_S_SYN_RECV:
diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c
index a25e51d..1bba3c7 100644
--- a/net/netfilter/ipvs/ip_vs_core.c
+++ b/net/netfilter/ipvs/ip_vs_core.c
@@ -1870,6 +1870,7 @@ static int __net_init __ip_vs_init(struct net *net)
pr_err("%s(): no memory.\n", __func__);
return -ENOMEM;
}
+ ipvs->net = net;
/* Incarnation counters used for creating unique names */
ipvs->inc = atomic_read(&ipvs_netns_cnt);
atomic_inc(&ipvs_netns_cnt);
diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
index 778c5b3..f786f61 100644
--- a/net/netfilter/ipvs/ip_vs_ctl.c
+++ b/net/netfilter/ipvs/ip_vs_ctl.c
@@ -218,18 +218,16 @@ static void update_defense_level(struct netns_ipvs *ipvs)
* Timer for checking the defense
*/
#define DEFENSE_TIMER_PERIOD 1*HZ
-static void defense_work_handler(struct work_struct *work);
-static DECLARE_DELAYED_WORK(defense_work, defense_work_handler);
static void defense_work_handler(struct work_struct *work)
{
- struct netns_ipvs *ipvs = net_ipvs(&init_net);
+ struct netns_ipvs *ipvs =
+ container_of(work, struct netns_ipvs, defense_work.work);
update_defense_level(ipvs);
if (atomic_read(&ipvs->dropentry))
- ip_vs_random_dropentry();
-
- schedule_delayed_work(&defense_work, DEFENSE_TIMER_PERIOD);
+ ip_vs_random_dropentry(ipvs->net);
+ schedule_delayed_work(&ipvs->defense_work, DEFENSE_TIMER_PERIOD);
}
int
@@ -3539,6 +3537,9 @@ int __net_init __ip_vs_control_init(struct net *net)
goto err_reg;
ip_vs_new_estimator(net, ipvs->ctl_stats);
ipvs->sysctl_tbl = tbl;
+ /* Schedule defense work */
+ INIT_DELAYED_WORK(&ipvs->defense_work, defense_work_handler);
+ schedule_delayed_work(&ipvs->defense_work, DEFENSE_TIMER_PERIOD);
return 0;
err_reg:
@@ -3563,6 +3564,8 @@ static void __net_exit __ip_vs_control_cleanup(struct net *net)
proc_net_remove(net, "ip_vs_stats_percpu");
proc_net_remove(net, "ip_vs_stats");
proc_net_remove(net, "ip_vs");
+ cancel_rearming_delayed_work(&ipvs->defense_work);
+ cancel_work_sync(&ipvs->defense_work.work);
free_percpu(ipvs->ustats);
kfree(ipvs->ctl_stats);
}
@@ -3606,9 +3609,6 @@ int __init ip_vs_control_init(void)
goto err_net;
}
- /* Hook the defense timer */
- schedule_delayed_work(&defense_work, DEFENSE_TIMER_PERIOD);
-
LeaveFunction(2);
return 0;
@@ -3623,8 +3623,6 @@ void ip_vs_control_cleanup(void)
{
EnterFunction(2);
ip_vs_trash_cleanup();
- cancel_rearming_delayed_work(&defense_work);
- cancel_work_sync(&defense_work.work);
unregister_pernet_subsys(&ipvs_control_ops);
ip_vs_genl_unregister();
nf_unregister_sockopt(&ip_vs_sockopts);
--
1.7.2.3
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