From: Mark Huang <mlhuang@cs.princeton.edu>
Date: Mon, 17 Jan 2005 20:01:59 +0000 (+0000)
Subject: - PL3791 fix: Suppress ICMP Unreachable if the port was bound to a (presumably raw... 
X-Git-Tag: before-fedora-2_6_18-1_2239_FC5-vs2_0_2_2-rc6-merge~292
X-Git-Url: http://git.onelab.eu/?a=commitdiff_plain;h=7100de193a1848d14a1221b9e83d6c2f2ad93f5a;p=linux-2.6.git

- PL3791 fix: Suppress ICMP Unreachable if the port was bound to a (presumably raw) socket
---

diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index ad097f510..d95648244 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1237,8 +1237,11 @@ int udp_rcv(struct sk_buff *skb)
 	if (udp_checksum_complete(skb))
 		goto csum_error;
 
-	UDP_INC_STATS_BH(UDP_MIB_NOPORTS);
-	icmp_send(skb, ICMP_DEST_UNREACH, ICMP_PORT_UNREACH, 0);
+	/* VNET: Suppress ICMP Unreachable if the port was bound to a (presumably raw) socket */
+	if (!skb->sk) {
+		UDP_INC_STATS_BH(UDP_MIB_NOPORTS);
+		icmp_send(skb, ICMP_DEST_UNREACH, ICMP_PORT_UNREACH, 0);
+	}
 
 	/*
 	 * Hmm.  We got an UDP packet to a port to which we