From b0c81aa566cccbe26bd99237873fb8428827d82f Mon Sep 17 00:00:00 2001 From: Changli Gao Date: Fri, 23 Jul 2010 14:04:03 +0200 Subject: [PATCH] netfilter: xt_quota: use per-rule spin lock Use per-rule spin lock to improve the scalability. Signed-off-by: Changli Gao Signed-off-by: Patrick McHardy --- net/netfilter/xt_quota.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/net/netfilter/xt_quota.c b/net/netfilter/xt_quota.c index b4f7dfea5980..304b1fda1a0d 100644 --- a/net/netfilter/xt_quota.c +++ b/net/netfilter/xt_quota.c @@ -11,7 +11,8 @@ #include 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("a_lock); + spin_lock_bh(&priv->lock); if (priv->quota >= skb->len) { priv->quota -= skb->len; ret = !ret; @@ -39,7 +38,7 @@ quota_mt(const struct sk_buff *skb, struct xt_action_param *par) } /* Copy quota back to matchinfo so that iptables can display it */ q->quota = priv->quota; - spin_unlock_bh("a_lock); + spin_unlock_bh(&priv->lock); return ret; } @@ -55,6 +54,7 @@ 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; } -- GitLab