From: Gao feng <gaofeng@cn.fujitsu.com>
To: netfilter-devel@vger.kernel.org
Cc: Gao feng <gaofeng@cn.fujitsu.com>
Subject: [PATCH 2/2] xt_TCPMSS: lookup route in proper net namesapce
Date: Thu, 26 Sep 2013 15:00:31 +0800 [thread overview]
Message-ID: <1380178831-20360-2-git-send-email-gaofeng@cn.fujitsu.com> (raw)
In-Reply-To: <1380178831-20360-1-git-send-email-gaofeng@cn.fujitsu.com>
Otherwise the pmtu will be incorrect.
Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
---
net/netfilter/xt_TCPMSS.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/net/netfilter/xt_TCPMSS.c b/net/netfilter/xt_TCPMSS.c
index 62776de..e762de5 100644
--- a/net/netfilter/xt_TCPMSS.c
+++ b/net/netfilter/xt_TCPMSS.c
@@ -43,7 +43,8 @@ optlen(const u_int8_t *opt, unsigned int offset)
return opt[offset+1];
}
-static u_int32_t tcpmss_reverse_mtu(const struct sk_buff *skb,
+static u_int32_t tcpmss_reverse_mtu(struct net *net,
+ const struct sk_buff *skb,
unsigned int family)
{
struct flowi fl;
@@ -64,7 +65,7 @@ static u_int32_t tcpmss_reverse_mtu(const struct sk_buff *skb,
rcu_read_lock();
ai = nf_get_afinfo(family);
if (ai != NULL)
- ai->route(&init_net, (struct dst_entry **)&rt, &fl, false);
+ ai->route(net, (struct dst_entry **)&rt, &fl, false);
rcu_read_unlock();
if (rt != NULL) {
@@ -107,7 +108,8 @@ tcpmss_mangle_packet(struct sk_buff *skb,
return -1;
if (info->mss == XT_TCPMSS_CLAMP_PMTU) {
- unsigned int in_mtu = tcpmss_reverse_mtu(skb, family);
+ struct net *net = dev_net(par->in ? par->in : par->out);
+ unsigned int in_mtu = tcpmss_reverse_mtu(net, skb, family);
if (dst_mtu(skb_dst(skb)) <= minlen) {
net_err_ratelimited("unknown or invalid path-MTU (%u)\n",
--
1.8.3.1
next prev parent reply other threads:[~2013-09-26 6:59 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-26 7:00 [PATCH 1/2] xt_TCPMSS：Get reserve mtu only when specifing option clamp-mss-to-pmtu Gao feng
2013-09-26 7:00 ` Gao feng [this message]
2013-09-27 14:20 ` [PATCH 2/2] xt_TCPMSS: lookup route in proper net namesapce Pablo Neira Ayuso
2013-09-27 14:20 ` [PATCH 1/2] xt_TCPMSS：Get reserve mtu only when specifing option clamp-mss-to-pmtu Pablo Neira Ayuso
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