netdev - [PATCH v2 3/4] ipv4: Add ip_defrag() agent IP_DEFRAG_AF

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Message-Id: <20110705.020422.1439937219658297425.davem@davemloft.net>
Date:	Tue, 05 Jul 2011 02:04:22 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	victor@...iniac.net
CC:	netdev@...r.kernel.org
Subject: [PATCH v2 3/4] ipv4: Add ip_defrag() agent IP_DEFRAG_AF_PACKET.


Elide the ICMP on frag queue timeouts unconditionally for
this user.

Signed-off-by: David S. Miller <davem@...emloft.net>
---
 include/net/ip.h       |    3 ++-
 net/ipv4/ip_fragment.c |    5 +++--
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/include/net/ip.h b/include/net/ip.h
index 9fa9416..aa76c7a 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -404,7 +404,8 @@ enum ip_defrag_users {
 	__IP_DEFRAG_CONNTRACK_BRIDGE_IN = IP_DEFRAG_CONNTRACK_BRIDGE_IN + USHRT_MAX,
 	IP_DEFRAG_VS_IN,
 	IP_DEFRAG_VS_OUT,
-	IP_DEFRAG_VS_FWD
+	IP_DEFRAG_VS_FWD,
+	IP_DEFRAG_AF_PACKET,
 };
 
 int ip_defrag(struct sk_buff *skb, u32 user);
diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c
index 0ad6035..0e0ab98 100644
--- a/net/ipv4/ip_fragment.c
+++ b/net/ipv4/ip_fragment.c
@@ -261,8 +261,9 @@ static void ip_expire(unsigned long arg)
 		 * Only an end host needs to send an ICMP
 		 * "Fragment Reassembly Timeout" message, per RFC792.
 		 */
-		if (qp->user == IP_DEFRAG_CONNTRACK_IN &&
-		    skb_rtable(head)->rt_type != RTN_LOCAL)
+		if (qp->user == IP_DEFRAG_AF_PACKET ||
+		    (qp->user == IP_DEFRAG_CONNTRACK_IN &&
+		     skb_rtable(head)->rt_type != RTN_LOCAL))
 			goto out_rcu_unlock;
 
 
-- 
1.7.5.4

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