From 3904dcc4a7af8e28e45a8d123cef3f7653847a51 Mon Sep 17 00:00:00 2001 From: Somnath Kotur Date: Sun, 26 May 2013 21:09:06 +0000 Subject: [PATCH] be2net: Trim padded packets for Lancer For padded packets, Lancer computes incorrect checksum. The workaround is to trim such packets. This workaround is mainly for IPv4 packets. Signed-off-by: Kalesh AP Signed-off-by: Somnath Kotur Signed-off-by: David S. Miller --- drivers/net/ethernet/emulex/benet/be_main.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c index 26e222f..1140a86 100644 --- a/drivers/net/ethernet/emulex/benet/be_main.c +++ b/drivers/net/ethernet/emulex/benet/be_main.c @@ -860,10 +860,12 @@ static struct sk_buff *be_xmit_workarounds(struct be_adapter *adapter, /* For padded packets, BE HW modifies tot_len field in IP header * incorrecly when VLAN tag is inserted by HW. + * For padded packets, Lancer computes incorrect checksum. */ eth_hdr_len = ntohs(skb->protocol) == ETH_P_8021Q ? VLAN_ETH_HLEN : ETH_HLEN; - if (skb->len <= 60 && vlan_tx_tag_present(skb) && + if (skb->len <= 60 && + (lancer_chip(adapter) || vlan_tx_tag_present(skb)) && is_ipv4_pkt(skb)) { ip = (struct iphdr *)ip_hdr(skb); pskb_trim(skb, eth_hdr_len + ntohs(ip->tot_len)); -- 2.7.4