commit bc8acf2c8c3e43fcc192762a9f964b3e9a17748b
author Eric Dumazet <eric.dumazet@gmail.com> Thu Sep 02 13:07:41 2010 -0700
committer David S. Miller <davem@davemloft.net> Thu Sep 02 19:06:22 2010 -0700
tree e3a91392771a22390e59c24fcb7bad3045ce17d1
parent 7162f6691e9d39d8d866574687cddb3f1ec65d72

drivers/net: avoid some skb->ip_summed initializations

fresh skbs have ip_summed set to CHECKSUM_NONE (0)

We can avoid setting again skb->ip_summed to CHECKSUM_NONE in drivers.

Introduce skb_checksum_none_assert() helper so that we keep this
assertion documented in driver sources.

Change most occurrences of :

skb->ip_summed = CHECKSUM_NONE;

by :

skb_checksum_none_assert(skb);

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/tg3.c

diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index bc3af78..9f6ffff 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -4719,7 +4719,7 @@
 		      >> RXD_TCPCSUM_SHIFT) == 0xffff))
 			skb->ip_summed = CHECKSUM_UNNECESSARY;
 		else
-			skb->ip_summed = CHECKSUM_NONE;
+			skb_checksum_none_assert(skb);
 
 		skb->protocol = eth_type_trans(skb, tp->dev);