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From: KOVACS Krisztian <hidden@sch.bme.hu>
To: David Miller <davem@davemloft.net>
Cc: Patrick McHardy <kaber@trash.net>, netdev@vger.kernel.org
Subject: [PATCH 13/14] Don't lookup the socket if there's a socket attached to the skb
Date: Sat, 13 Oct 2007 19:35:39 +0200	[thread overview]
Message-ID: <20071013173539.22517.98937.stgit@nessa.odu> (raw)
In-Reply-To: <20071013172857.22517.84760.stgit@nessa.odu>

Use the socket cached in the TPROXY target if it's present.

Signed-off-by: KOVACS Krisztian <hidden@sch.bme.hu>
---

 net/ipv4/udp.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 053d5c4..6592689 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1158,6 +1158,14 @@ int __udp4_lib_rcv(struct sk_buff *skb, struct hlist_head udptable[],
 	if (rt->rt_flags & (RTCF_BROADCAST|RTCF_MULTICAST))
 		return __udp4_lib_mcast_deliver(skb, uh, saddr, daddr, udptable);
 
+#if defined(CONFIG_NETFILTER_TPROXY) || defined(CONFIG_NETFILTER_TPROXY_MODULE)
+	if (unlikely(skb->sk)) {
+		/* steal reference */
+		sk = skb->sk;
+		skb->destructor = NULL;
+		skb->sk = NULL;
+	} else
+#endif
 	sk = __udp4_lib_lookup(saddr, uh->source, daddr, uh->dest,
 			       skb->dev->ifindex, udptable        );
 


  parent reply	other threads:[~2007-10-13 17:39 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-10-13 17:28 [PATCH 00/14] Transparent Proxying Patches, Take 5 KOVACS Krisztian
2007-10-13 17:29 ` [PATCH 01/14] Loosen source address check on IPv4 output KOVACS Krisztian
2007-10-13 17:29 ` [PATCH 02/14] Implement IP_TRANSPARENT socket option KOVACS Krisztian
2007-10-13 17:30 ` [PATCH 03/14] Allow binding to non-local addresses if IP_TRANSPARENT is set KOVACS Krisztian
2007-10-13 17:31 ` [PATCH 04/14] Conditionally enable transparent flow flag when connecting KOVACS Krisztian
2007-10-13 17:31 ` [PATCH 05/14] Handle TCP SYN+ACK/ACK/RST transparency KOVACS Krisztian
2007-10-13 17:32 ` [PATCH 06/14] Port redirection support for TCP KOVACS Krisztian
2007-10-13 17:32 ` [PATCH 07/14] Export UDP socket lookup function KOVACS Krisztian
2007-10-13 17:33 ` [PATCH 08/14] Split Netfilter IPv4 defragmentation into a separate module KOVACS Krisztian
2007-10-13 17:33 ` [PATCH 09/14] iptables tproxy core KOVACS Krisztian
2007-10-13 17:34 ` [PATCH 10/14] iptables socket match KOVACS Krisztian
2007-10-13 17:34 ` [PATCH 11/14] iptables TPROXY target KOVACS Krisztian
2007-10-13 17:35 ` [PATCH 12/14] Don't lookup the socket if there's a socket attached to the skb KOVACS Krisztian
2007-10-13 17:35 ` KOVACS Krisztian [this message]
2007-10-13 17:36 ` [PATCH 14/14] Add documentation KOVACS Krisztian
2007-10-13 22:44 ` [PATCH 00/14] Transparent Proxying Patches, Take 5 David Miller
2007-10-14  9:05   ` KOVACS Krisztian

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