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, 3 insertions, 2 deletions

diff --git a/drivers/net/tehuti.c b/drivers/net/tehuti.c
index 3128d6a8e9ce..8b3dc1eb4015 100644
--- a/drivers/net/tehuti.c
+++ b/drivers/net/tehuti.c
@@ -1297,12 +1297,13 @@ static int bdx_rx_receive(struct bdx_priv *priv, struct rxd_fifo *f, int budget)
                 ndev->stats.rx_bytes += len;
 
                 skb_put(skb, len);
-                skb->ip_summed = CHECKSUM_UNNECESSARY;
                 skb->protocol = eth_type_trans(skb, ndev);
 
                 /* Non-IP packets aren't checksum-offloaded */
                 if (GET_RXD_PKT_ID(rxd_val1) == 0)
-                        skb->ip_summed = CHECKSUM_NONE;
+                        skb_checksum_none_assert(skb);
+                else
+                        skb->ip_summed = CHECKSUM_UNNECESSARY;
 
                 NETIF_RX_MUX(priv, rxd_val1, rxd_vlan, skb);