[RFC] [IPV4][IPV6][TCP] remove skb->dev NULL assignation in tcp_v[4|6]_rcv functions

[Daniel Lezcano <dlezcano@fr.ibm.com>]

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Subject: [RFC] remove skb->dev NULL assignation
From: Daniel Lezcano <dlezcano@fr.ibm.com>

I was trying to figure out why in the tcp_v4_rcv/tcp_v6_rcv function,
the skb->dev field is set to NULL. There is certainly a good reason,
but I was not able to find it.

Is it possible to remove this ?

Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
---
 net/ipv4/tcp_ipv4.c |    2 --
 net/ipv6/tcp_ipv6.c |    2 --
 2 files changed, 4 deletions(-)

Index: net-2.6/net/ipv4/tcp_ipv4.c
===================================================================
--- net-2.6.orig/net/ipv4/tcp_ipv4.c
+++ net-2.6/net/ipv4/tcp_ipv4.c
@@ -1661,8 +1661,6 @@ process:
 	if (sk_filter(sk, skb))
 		goto discard_and_relse;
 
-	skb->dev = NULL;
-
 	bh_lock_sock_nested(sk);
 	ret = 0;
 	if (!sock_owned_by_user(sk)) {
Index: net-2.6/net/ipv6/tcp_ipv6.c
===================================================================
--- net-2.6.orig/net/ipv6/tcp_ipv6.c
+++ net-2.6/net/ipv6/tcp_ipv6.c
@@ -1722,8 +1722,6 @@ process:
 	if (sk_filter(sk, skb))
 		goto discard_and_relse;
 
-	skb->dev = NULL;
-
 	bh_lock_sock_nested(sk);
 	ret = 0;
 	if (!sock_owned_by_user(sk)) {