From: RongQing.Li <roy.qing.li@gmail.com>
Date: Thu, 26 Apr 2012 21:01:13 +0000 (+0000)
Subject: drivers/net/oki-semi: Donot recompute IP header checksum
X-Git-Tag: firefly_0821_release~3680^2~2787^2~249
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=62ecc37986414ff98ba863f8f4b8c3fa9c8fb808;p=firefly-linux-kernel-4.4.55.git

drivers/net/oki-semi: Donot recompute IP header checksum

If I understand correct, NETIF_F_IP_CSUM only means the hardware
will compute the TCP/UDP checksum, IP checksum is always computed
in software

So as a workround of hardware unable to compute small packages
checksum, do not need to compute IP header checksum.

Signed-off-by: RongQing.Li <roy.qing.li@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c
index 835e3bbdac18..107f41a46a41 100644
--- a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c
+++ b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c
@@ -1240,8 +1240,6 @@ static void pch_gbe_tx_queue(struct pch_gbe_adapter *adapter,
 		if (skb->protocol == htons(ETH_P_IP)) {
 			struct iphdr *iph = ip_hdr(skb);
 			unsigned int offset;
-			iph->check = 0;
-			iph->check = ip_fast_csum((u8 *) iph, iph->ihl);
 			offset = skb_transport_offset(skb);
 			if (iph->protocol == IPPROTO_TCP) {
 				skb->csum = 0;