提交 a174fd88 编写于 作者: J Jesse Brandeburg 提交者: Jeff Garzik

[PATCH] e1000: fix for dhcp issue

Parse outgoing packets in e1000_transfer_dhcp_info as raw packet even if
protocol bits are set.  pump, for instance causes kernel panic on some
systems, if parsed via udp header.

Thanks to Derrell Lipman <Derrell.Lipman@BacklotTech.com> for reporting and
testing.
Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com>
Cc: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>
上级 d5366d9e
......@@ -2621,19 +2621,7 @@ e1000_transfer_dhcp_info(struct e1000_adapter *adapter, struct sk_buff *skb)
E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) )
return 0;
}
if(htons(ETH_P_IP) == skb->protocol) {
const struct iphdr *ip = skb->nh.iph;
if(IPPROTO_UDP == ip->protocol) {
struct udphdr *udp = (struct udphdr *)(skb->h.uh);
if(ntohs(udp->dest) == 67) {
offset = (uint8_t *)udp + 8 - skb->data;
length = skb->len - offset;
return e1000_mng_write_dhcp_info(hw,
(uint8_t *)udp + 8, length);
}
}
} else if((skb->len > MINIMUM_DHCP_PACKET_SIZE) && (!skb->protocol)) {
if ((skb->len > MINIMUM_DHCP_PACKET_SIZE) && (!skb->protocol)) {
struct ethhdr *eth = (struct ethhdr *) skb->data;
if((htons(ETH_P_IP) == eth->h_proto)) {
const struct iphdr *ip =
......
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