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net: bcmgenet: Fix sparse warnings in bcmgenet_put_tx_csum() 

skb->protocol is a __be16 which we would be calling htons() against,
while this is not wrong per-se as it correctly results in swapping the
value on LE hosts, this still upsets sparse. Adopt a similar pattern to
what other drivers do and just assign ip_ver to skb->protocol, and then
use htons() against the different constants such that the compiler can
resolve the values at build time.

Fixes: 1c1008c793 ("net: bcmgenet: add main driver file")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli 2018-04-02 15:58:55 -07:00 committed by David S. Miller
parent b41d7cfef5
commit 6f89421180
1 changed files with 6 additions and 5 deletions
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11
drivers/net/ethernet/broadcom/genet/bcmgenet.c
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@ -1489,7 +1489,7 @@ static struct sk_buff *bcmgenet_put_tx_csum(struct net_device *dev,
struct sk_buff *new_skb;
u16 offset;
u8 ip_proto;
u16 ip_ver;
__be16 ip_ver;
u32 tx_csum_info;
if (unlikely(skb_headroom(skb) < sizeof(*status))) {
@ -1509,12 +1509,12 @@ static struct sk_buff *bcmgenet_put_tx_csum(struct net_device *dev,
status = (struct status_64 *)skb->data;
if (skb->ip_summed == CHECKSUM_PARTIAL) {
ip_ver = htons(skb->protocol);
ip_ver = skb->protocol;
switch (ip_ver) {
case ETH_P_IP:
case htons(ETH_P_IP):
ip_proto = ip_hdr(skb)->protocol;
break;
case ETH_P_IPV6:
case htons(ETH_P_IPV6):
ip_proto = ipv6_hdr(skb)->nexthdr;
break;
default:
@ -1530,7 +1530,8 @@ static struct sk_buff *bcmgenet_put_tx_csum(struct net_device *dev,
*/
if (ip_proto == IPPROTO_TCP || ip_proto == IPPROTO_UDP) {
tx_csum_info |= STATUS_TX_CSUM_LV;
if (ip_proto == IPPROTO_UDP && ip_ver == ETH_P_IP)
if (ip_proto == IPPROTO_UDP &&
ip_ver == htons(ETH_P_IP))
tx_csum_info |= STATUS_TX_CSUM_PROTO_UDP;
} else {
tx_csum_info = 0;