From 6d3e8965a2f1a4ff31db6f559d1e07f6b70e54b8 Mon Sep 17 00:00:00 2001
From: Jesse Gross <jesse@nicira.com>
Date: Fri, 21 Jun 2013 15:28:20 -0700
Subject: [PATCH] datapath: Fix uninitializaed variable with GRE GSO.

If a packet is neither GSO nor CHECKSUM_PARTIAL then the
GRE GSO compatibility code can use an uninitialized IP ID.

CC: Pravin Shelar <pshelar@nicira.com>
Reported-by: Joe Stringer <joe@wand.net.nz>
Signed-off-by: Jesse Gross <jesse@nicira.com>
---
 datapath/linux/compat/gso.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/datapath/linux/compat/gso.c b/datapath/linux/compat/gso.c
index 7379a579c..3cadde95a 100644
--- a/datapath/linux/compat/gso.c
+++ b/datapath/linux/compat/gso.c
@@ -103,7 +103,7 @@ free:
 int rpl_ip_local_out(struct sk_buff *skb)
 {
 	int ret = NETDEV_TX_OK;
-	int id;
+	int id = -1;
 
 	if (skb_is_gso(skb)) {
 		struct iphdr *iph;
@@ -119,7 +119,6 @@ int rpl_ip_local_out(struct sk_buff *skb)
 		err = skb_checksum_help(skb);
 		if (unlikely(err))
 			return 0;
-		id = -1;
 	}
 
 	while (skb) {
-- 
2.20.1