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/greth.c b/drivers/net/greth.c
index fbeaf70d1727..27d6960ce09e 100644
--- a/drivers/net/greth.c
+++ b/drivers/net/greth.c
@@ -893,7 +893,7 @@ static int greth_rx_gbit(struct net_device *dev, int limit)
                                 if (greth->flags & GRETH_FLAG_RX_CSUM && hw_checksummed(status))
                                         skb->ip_summed = CHECKSUM_UNNECESSARY;
                                 else
-                                        skb->ip_summed = CHECKSUM_NONE;
+                                        skb_checksum_none_assert(skb);
 
                                 skb->protocol = eth_type_trans(skb, dev);
                                 dev->stats.rx_packets++;