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Diffstat (limited to 'net/netfilter/ipvs')
-rw-r--r--net/netfilter/ipvs/ip_vs_conn.c4
-rw-r--r--net/netfilter/ipvs/ip_vs_core.c11
-rw-r--r--net/netfilter/ipvs/ip_vs_ctl.c6
-rw-r--r--net/netfilter/ipvs/ip_vs_est.c16
-rw-r--r--net/netfilter/ipvs/ip_vs_ftp.c4
5 files changed, 20 insertions, 21 deletions
diff --git a/net/netfilter/ipvs/ip_vs_conn.c b/net/netfilter/ipvs/ip_vs_conn.c
index 965f3c8e5089..37ebb0cb62b8 100644
--- a/net/netfilter/ipvs/ip_vs_conn.c
+++ b/net/netfilter/ipvs/ip_vs_conn.c
@@ -885,7 +885,7 @@ static void ip_vs_conn_expire(struct timer_list *t)
* conntrack cleanup for the net.
*/
smp_rmb();
- if (ipvs->enable)
+ if (READ_ONCE(ipvs->enable))
ip_vs_conn_drop_conntrack(cp);
}
@@ -1439,7 +1439,7 @@ void ip_vs_expire_nodest_conn_flush(struct netns_ipvs *ipvs)
cond_resched_rcu();
/* netns clean up started, abort delayed work */
- if (!ipvs->enable)
+ if (!READ_ONCE(ipvs->enable))
break;
}
rcu_read_unlock();
diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c
index c7a8a08b7308..5ea7ab8bf4dc 100644
--- a/net/netfilter/ipvs/ip_vs_core.c
+++ b/net/netfilter/ipvs/ip_vs_core.c
@@ -1353,9 +1353,6 @@ ip_vs_out_hook(void *priv, struct sk_buff *skb, const struct nf_hook_state *stat
if (unlikely(!skb_dst(skb)))
return NF_ACCEPT;
- if (!ipvs->enable)
- return NF_ACCEPT;
-
ip_vs_fill_iph_skb(af, skb, false, &iph);
#ifdef CONFIG_IP_VS_IPV6
if (af == AF_INET6) {
@@ -1940,7 +1937,7 @@ ip_vs_in_hook(void *priv, struct sk_buff *skb, const struct nf_hook_state *state
return NF_ACCEPT;
}
/* ipvs enabled in this netns ? */
- if (unlikely(sysctl_backup_only(ipvs) || !ipvs->enable))
+ if (unlikely(sysctl_backup_only(ipvs)))
return NF_ACCEPT;
ip_vs_fill_iph_skb(af, skb, false, &iph);
@@ -2108,7 +2105,7 @@ ip_vs_forward_icmp(void *priv, struct sk_buff *skb,
int r;
/* ipvs enabled in this netns ? */
- if (unlikely(sysctl_backup_only(ipvs) || !ipvs->enable))
+ if (unlikely(sysctl_backup_only(ipvs)))
return NF_ACCEPT;
if (state->pf == NFPROTO_IPV4) {
@@ -2295,7 +2292,7 @@ static int __net_init __ip_vs_init(struct net *net)
return -ENOMEM;
/* Hold the beast until a service is registered */
- ipvs->enable = 0;
+ WRITE_ONCE(ipvs->enable, 0);
ipvs->net = net;
/* Counters used for creating unique names */
ipvs->gen = atomic_read(&ipvs_netns_cnt);
@@ -2367,7 +2364,7 @@ static void __net_exit __ip_vs_dev_cleanup_batch(struct list_head *net_list)
ipvs = net_ipvs(net);
ip_vs_unregister_hooks(ipvs, AF_INET);
ip_vs_unregister_hooks(ipvs, AF_INET6);
- ipvs->enable = 0; /* Disable packet reception */
+ WRITE_ONCE(ipvs->enable, 0); /* Disable packet reception */
smp_wmb();
ip_vs_sync_net_cleanup(ipvs);
}
diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
index 6a6fc4478533..4c8fa22be88a 100644
--- a/net/netfilter/ipvs/ip_vs_ctl.c
+++ b/net/netfilter/ipvs/ip_vs_ctl.c
@@ -256,7 +256,7 @@ static void est_reload_work_handler(struct work_struct *work)
struct ip_vs_est_kt_data *kd = ipvs->est_kt_arr[id];
/* netns clean up started, abort delayed work */
- if (!ipvs->enable)
+ if (!READ_ONCE(ipvs->enable))
goto unlock;
if (!kd)
continue;
@@ -1483,9 +1483,9 @@ ip_vs_add_service(struct netns_ipvs *ipvs, struct ip_vs_service_user_kern *u,
*svc_p = svc;
- if (!ipvs->enable) {
+ if (!READ_ONCE(ipvs->enable)) {
/* Now there is a service - full throttle */
- ipvs->enable = 1;
+ WRITE_ONCE(ipvs->enable, 1);
/* Start estimation for first time */
ip_vs_est_reload_start(ipvs);
diff --git a/net/netfilter/ipvs/ip_vs_est.c b/net/netfilter/ipvs/ip_vs_est.c
index 15049b826732..93a925f1ed9b 100644
--- a/net/netfilter/ipvs/ip_vs_est.c
+++ b/net/netfilter/ipvs/ip_vs_est.c
@@ -231,7 +231,7 @@ static int ip_vs_estimation_kthread(void *data)
void ip_vs_est_reload_start(struct netns_ipvs *ipvs)
{
/* Ignore reloads before first service is added */
- if (!ipvs->enable)
+ if (!READ_ONCE(ipvs->enable))
return;
ip_vs_est_stopped_recalc(ipvs);
/* Bump the kthread configuration genid */
@@ -306,7 +306,7 @@ static int ip_vs_est_add_kthread(struct netns_ipvs *ipvs)
int i;
if ((unsigned long)ipvs->est_kt_count >= ipvs->est_max_threads &&
- ipvs->enable && ipvs->est_max_threads)
+ READ_ONCE(ipvs->enable) && ipvs->est_max_threads)
return -EINVAL;
mutex_lock(&ipvs->est_mutex);
@@ -343,7 +343,7 @@ static int ip_vs_est_add_kthread(struct netns_ipvs *ipvs)
}
/* Start kthread tasks only when services are present */
- if (ipvs->enable && !ip_vs_est_stopped(ipvs)) {
+ if (READ_ONCE(ipvs->enable) && !ip_vs_est_stopped(ipvs)) {
ret = ip_vs_est_kthread_start(ipvs, kd);
if (ret < 0)
goto out;
@@ -486,7 +486,7 @@ int ip_vs_start_estimator(struct netns_ipvs *ipvs, struct ip_vs_stats *stats)
struct ip_vs_estimator *est = &stats->est;
int ret;
- if (!ipvs->est_max_threads && ipvs->enable)
+ if (!ipvs->est_max_threads && READ_ONCE(ipvs->enable))
ipvs->est_max_threads = ip_vs_est_max_threads(ipvs);
est->ktid = -1;
@@ -663,7 +663,7 @@ static int ip_vs_est_calc_limits(struct netns_ipvs *ipvs, int *chain_max)
/* Wait for cpufreq frequency transition */
wait_event_idle_timeout(wq, kthread_should_stop(),
HZ / 50);
- if (!ipvs->enable || kthread_should_stop())
+ if (!READ_ONCE(ipvs->enable) || kthread_should_stop())
goto stop;
}
@@ -681,7 +681,7 @@ static int ip_vs_est_calc_limits(struct netns_ipvs *ipvs, int *chain_max)
rcu_read_unlock();
local_bh_enable();
- if (!ipvs->enable || kthread_should_stop())
+ if (!READ_ONCE(ipvs->enable) || kthread_should_stop())
goto stop;
cond_resched();
@@ -757,7 +757,7 @@ static void ip_vs_est_calc_phase(struct netns_ipvs *ipvs)
mutex_lock(&ipvs->est_mutex);
for (id = 1; id < ipvs->est_kt_count; id++) {
/* netns clean up started, abort */
- if (!ipvs->enable)
+ if (!READ_ONCE(ipvs->enable))
goto unlock2;
kd = ipvs->est_kt_arr[id];
if (!kd)
@@ -787,7 +787,7 @@ last_kt:
id = ipvs->est_kt_count;
next_kt:
- if (!ipvs->enable || kthread_should_stop())
+ if (!READ_ONCE(ipvs->enable) || kthread_should_stop())
goto unlock;
id--;
if (id < 0)
diff --git a/net/netfilter/ipvs/ip_vs_ftp.c b/net/netfilter/ipvs/ip_vs_ftp.c
index d8a284999544..206c6700e200 100644
--- a/net/netfilter/ipvs/ip_vs_ftp.c
+++ b/net/netfilter/ipvs/ip_vs_ftp.c
@@ -53,6 +53,7 @@ enum {
IP_VS_FTP_EPSV,
};
+static bool exiting_module;
/*
* List of ports (up to IP_VS_APP_MAX_PORTS) to be handled by helper
* First port is set to the default port.
@@ -605,7 +606,7 @@ static void __ip_vs_ftp_exit(struct net *net)
{
struct netns_ipvs *ipvs = net_ipvs(net);
- if (!ipvs)
+ if (!ipvs || !exiting_module)
return;
unregister_ip_vs_app(ipvs, &ip_vs_ftp);
@@ -627,6 +628,7 @@ static int __init ip_vs_ftp_init(void)
*/
static void __exit ip_vs_ftp_exit(void)
{
+ exiting_module = true;
unregister_pernet_subsys(&ip_vs_ftp_ops);
/* rcu_barrier() is called by netns */
}
generated by cgit v1.2.3 (git 2.39.0) at 2025-10-07 14:33:36 +0300