From: Stephen Hemminger <shemminger@linux-foundation.org>
Date: Wed, 30 May 2007 21:23:18 +0000 (-0700)
Subject: qla3xxx: cleanup checksum offload code
X-Git-Tag: v2.6.23-rc1~1201^2~40
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=91e745aa46336087e1295d44685ee2839bbba07d;p=linux-2.6-omap-h63xx.git

qla3xxx: cleanup checksum offload code

The code for checksum is more complex than needed when dealing with VLAN's;
the higher layers already pass down the location of the IP header.

Compile tested only, no hardware available.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Ron Mercer <ron.mercer@qlogic.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
---

diff --git a/drivers/net/qla3xxx.c b/drivers/net/qla3xxx.c
index 585be044ebb..8be8be451ad 100755
--- a/drivers/net/qla3xxx.c
+++ b/drivers/net/qla3xxx.c
@@ -2433,37 +2433,22 @@ static int ql_get_seg_count(struct ql3_adapter *qdev,
 	return -1;
 }
 
-static void ql_hw_csum_setup(struct sk_buff *skb,
+static void ql_hw_csum_setup(const struct sk_buff *skb,
 			     struct ob_mac_iocb_req *mac_iocb_ptr)
 {
-	struct ethhdr *eth;
-	struct iphdr *ip = NULL;
-	u8 offset = ETH_HLEN;
+	const struct iphdr *ip = ip_hdr(skb);
 
-	eth = (struct ethhdr *)(skb->data);
+	mac_iocb_ptr->ip_hdr_off = skb_network_offset(skb);
+	mac_iocb_ptr->ip_hdr_len = ip->ihl;
 
-	if (eth->h_proto == __constant_htons(ETH_P_IP)) {
-		ip = (struct iphdr *)&skb->data[ETH_HLEN];
-	} else if (eth->h_proto == htons(ETH_P_8021Q) &&
-		   ((struct vlan_ethhdr *)skb->data)->
-		   h_vlan_encapsulated_proto == __constant_htons(ETH_P_IP)) {
-		ip = (struct iphdr *)&skb->data[VLAN_ETH_HLEN];
-		offset = VLAN_ETH_HLEN;
-	}
-
-	if (ip) {
-		if (ip->protocol == IPPROTO_TCP) {
-			mac_iocb_ptr->flags1 |= OB_3032MAC_IOCB_REQ_TC | 
+	if (ip->protocol == IPPROTO_TCP) {
+		mac_iocb_ptr->flags1 |= OB_3032MAC_IOCB_REQ_TC |
 			OB_3032MAC_IOCB_REQ_IC;
-			mac_iocb_ptr->ip_hdr_off = offset;
-			mac_iocb_ptr->ip_hdr_len = ip->ihl;
-		} else if (ip->protocol == IPPROTO_UDP) {
-			mac_iocb_ptr->flags1 |= OB_3032MAC_IOCB_REQ_UC | 
+	} else {
+		mac_iocb_ptr->flags1 |= OB_3032MAC_IOCB_REQ_UC |
 			OB_3032MAC_IOCB_REQ_IC;
-			mac_iocb_ptr->ip_hdr_off = offset;
-			mac_iocb_ptr->ip_hdr_len = ip->ihl;
-		}
 	}
+
 }
 
 /*