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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>
This commit is contained in:
Stephen Hemminger 2007-05-30 14:23:18 -07:00 committed by Jeff Garzik
parent 59b34c1260
commit 91e745aa46
1 changed files with 10 additions and 25 deletions
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35
drivers/net/qla3xxx.c
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@ -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->protocol == IPPROTO_TCP) {
mac_iocb_ptr->flags1 |= OB_3032MAC_IOCB_REQ_TC |
OB_3032MAC_IOCB_REQ_IC;
} else {
mac_iocb_ptr->flags1 |= OB_3032MAC_IOCB_REQ_UC |
OB_3032MAC_IOCB_REQ_IC;
}
if (ip) {
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 |
OB_3032MAC_IOCB_REQ_IC;
mac_iocb_ptr->ip_hdr_off = offset;
mac_iocb_ptr->ip_hdr_len = ip->ihl;
}
}
}
/*