[PATCH net-next 3/3] be2net: Trim padded packets for Lancer
DORMANTno replies
From: Somnath Kotur <hidden>
Date: 2013-05-27 07:10:12
Subsystem:
emulex 10gbps nic be2, be3-r, lancer, skyhawk-r driver (be2net), networking drivers, the rest · Maintainers:
Ajit Khaparde, Sriharsha Basavapatna, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
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 <redacted> Signed-off-by: Somnath Kotur <redacted> --- drivers/net/ethernet/emulex/benet/be_main.c | 4 +++- 1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c
index a1b9474..0db8f65 100644
--- a/drivers/net/ethernet/emulex/benet/be_main.c
+++ b/drivers/net/ethernet/emulex/benet/be_main.c@@ -868,10 +868,12 @@ 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));
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1.5.6.1