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Diffstat (limited to 'net/netfilter/xt_quota.c')
-rw-r--r--net/netfilter/xt_quota.c12
1 files changed, 5 insertions, 7 deletions
diff --git a/net/netfilter/xt_quota.c b/net/netfilter/xt_quota.c
index b4f7dfea598..70eb2b4984d 100644
--- a/net/netfilter/xt_quota.c
+++ b/net/netfilter/xt_quota.c
@@ -11,7 +11,8 @@
#include <linux/netfilter/xt_quota.h>
struct xt_quota_priv {
- uint64_t quota;
+ spinlock_t lock;
+ uint64_t quota;
};
MODULE_LICENSE("GPL");
@@ -20,8 +21,6 @@ MODULE_DESCRIPTION("Xtables: countdown quota match");
MODULE_ALIAS("ipt_quota");
MODULE_ALIAS("ip6t_quota");
-static DEFINE_SPINLOCK(quota_lock);
-
static bool
quota_mt(const struct sk_buff *skb, struct xt_action_param *par)
{
@@ -29,7 +28,7 @@ quota_mt(const struct sk_buff *skb, struct xt_action_param *par)
struct xt_quota_priv *priv = q->master;
bool ret = q->flags & XT_QUOTA_INVERT;
- spin_lock_bh(&quota_lock);
+ spin_lock_bh(&priv->lock);
if (priv->quota >= skb->len) {
priv->quota -= skb->len;
ret = !ret;
@@ -37,9 +36,7 @@ quota_mt(const struct sk_buff *skb, struct xt_action_param *par)
/* we do not allow even small packets from now on */
priv->quota = 0;
}
- /* Copy quota back to matchinfo so that iptables can display it */
- q->quota = priv->quota;
- spin_unlock_bh(&quota_lock);
+ spin_unlock_bh(&priv->lock);
return ret;
}
@@ -55,6 +52,7 @@ static int quota_mt_check(const struct xt_mtchk_param *par)
if (q->master == NULL)
return -ENOMEM;
+ spin_lock_init(&q->master->lock);
q->master->quota = q->quota;
return 0;
}