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/cxgb4/sge.c b/drivers/net/cxgb4/sge.c
index 6ddb3bb0ce67..9967f3debce7 100644
--- a/drivers/net/cxgb4/sge.c
+++ b/drivers/net/cxgb4/sge.c
@@ -1605,7 +1605,7 @@ int t4_ethrx_handler(struct sge_rspq *q, const __be64 *rsp,
                         rxq->stats.rx_cso++;
                 }
         } else
-                skb->ip_summed = CHECKSUM_NONE;
+                skb_checksum_none_assert(skb);
 
         if (unlikely(pkt->vlan_ex)) {
                 struct vlan_group *grp = pi->vlan_grp;