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>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index bc3af78a869f..9f6ffffc8376 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -4719,7 +4719,7 @@ static int tg3_rx(struct tg3_napi *tnapi, int budget)
                       >> 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);