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, 2 insertions, 2 deletions

diff --git a/drivers/net/spider_net.c b/drivers/net/spider_net.c
index 1636a34d95dd..cb6bcca9d541 100644
--- a/drivers/net/spider_net.c
+++ b/drivers/net/spider_net.c
@@ -1000,9 +1000,9 @@ spider_net_pass_skb_up(struct spider_net_descr *descr,
                      !(data_error & SPIDER_NET_DATA_ERR_CKSUM_MASK))
                         skb->ip_summed = CHECKSUM_UNNECESSARY;
                 else
-                        skb->ip_summed = CHECKSUM_NONE;
+                        skb_checksum_none_assert(skb);
         } else
-                skb->ip_summed = CHECKSUM_NONE;
+                skb_checksum_none_assert(skb);
 
         if (data_status & SPIDER_NET_VLAN_PACKET) {
                 /* further enhancements: HW-accel VLAN