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r8169: improve rtl8169_tso_csum_v2

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Simplify the code and avoid the overhead of calling vlan_get_protocol().

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Heiner Kallweit 2020-04-18 23:10:44 +02:00 committed by David S. Miller
parent 145192f83a
commit 0623b98b41
1 changed files with 5 additions and 10 deletions
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15
drivers/net/ethernet/realtek/r8169_main.c
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@ -4127,25 +4127,20 @@ static bool rtl8169_tso_csum_v2(struct rtl8169_private *tp,
struct sk_buff *skb, u32 *opts)
{
u32 transport_offset = (u32)skb_transport_offset(skb);
u32 mss = skb_shinfo(skb)->gso_size;
struct skb_shared_info *shinfo = skb_shinfo(skb);
u32 mss = shinfo->gso_size;
if (mss) {
switch (vlan_get_protocol(skb)) {
case htons(ETH_P_IP):
if (shinfo->gso_type & SKB_GSO_TCPV4) {
opts[0] |= TD1_GTSENV4;
break;
case htons(ETH_P_IPV6):
} else if (shinfo->gso_type & SKB_GSO_TCPV6) {
if (skb_cow_head(skb, 0))
return false;
tcp_v6_gso_csum_prep(skb);
opts[0] |= TD1_GTSENV6;
break;
default:
} else {
WARN_ON_ONCE(1);
break;
}
opts[0] |= transport_offset << GTTCPHO_SHIFT;