From 6f89421180f15867dc1472d9edf68f82b0ed5ee6 Mon Sep 17 00:00:00 2001
From: Florian Fainelli <f.fainelli@gmail.com>
Date: Mon, 2 Apr 2018 15:58:55 -0700
Subject: [PATCH] net: bcmgenet: Fix sparse warnings in bcmgenet_put_tx_csum()
Git-commit: 6f89421180f15867dc1472d9edf68f82b0ed5ee6
Patch-mainline: v4.17-rc1
References: bsc#1051510
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: 1c1008c793fa ("net: bcmgenet: add main driver file")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/net/ethernet/broadcom/genet/bcmgenet.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
index 264fb37dd341..0445f2c0c629 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
@@ -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;
--
2.18.0