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path: root/net/netfilter/ipvs/ip_vs_sync.c
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Diffstat (limited to 'net/netfilter/ipvs/ip_vs_sync.c')
-rw-r--r--net/netfilter/ipvs/ip_vs_sync.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/net/netfilter/ipvs/ip_vs_sync.c b/net/netfilter/ipvs/ip_vs_sync.c
index 7ee7215..3cdd479 100644
--- a/net/netfilter/ipvs/ip_vs_sync.c
+++ b/net/netfilter/ipvs/ip_vs_sync.c
@@ -61,6 +61,7 @@
#define SYNC_PROTO_VER 1 /* Protocol version in header */
+static struct lock_class_key __ipvs_sync_key;
/*
* IPVS sync connection entry
* Version 0, i.e. original version.
@@ -1545,6 +1546,7 @@ int start_sync_thread(struct net *net, int state, char *mcast_ifn, __u8 syncid)
IP_VS_DBG(7, "Each ip_vs_sync_conn entry needs %Zd bytes\n",
sizeof(struct ip_vs_sync_conn_v0));
+
if (state == IP_VS_STATE_MASTER) {
if (ipvs->master_thread)
return -EEXIST;
@@ -1667,6 +1669,7 @@ int __net_init ip_vs_sync_net_init(struct net *net)
{
struct netns_ipvs *ipvs = net_ipvs(net);
+ __mutex_init(&ipvs->sync_mutex, "ipvs->sync_mutex", &__ipvs_sync_key);
INIT_LIST_HEAD(&ipvs->sync_queue);
spin_lock_init(&ipvs->sync_lock);
spin_lock_init(&ipvs->sync_buff_lock);
@@ -1680,7 +1683,9 @@ int __net_init ip_vs_sync_net_init(struct net *net)
void ip_vs_sync_net_cleanup(struct net *net)
{
int retc;
+ struct netns_ipvs *ipvs = net_ipvs(net);
+ mutex_lock(&ipvs->sync_mutex);
retc = stop_sync_thread(net, IP_VS_STATE_MASTER);
if (retc && retc != -ESRCH)
pr_err("Failed to stop Master Daemon\n");
@@ -1688,4 +1693,5 @@ void ip_vs_sync_net_cleanup(struct net *net)
retc = stop_sync_thread(net, IP_VS_STATE_BACKUP);
if (retc && retc != -ESRCH)
pr_err("Failed to stop Backup Daemon\n");
+ mutex_unlock(&ipvs->sync_mutex);
}

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