If I understand correct, NETIF_F_IP_CSUM only means the hardware
will compute the TCP/UDP checksum, IP checksum is always computed
in software
So as a workround of hardware unable to compute small packages
checksum, do not need to compute IP header checksum.
Signed-off-by: RongQing.Li <roy.qing.li@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
if (skb->protocol == htons(ETH_P_IP)) {
struct iphdr *iph = ip_hdr(skb);
unsigned int offset;
- iph->check = 0;
- iph->check = ip_fast_csum((u8 *) iph, iph->ihl);
offset = skb_transport_offset(skb);
if (iph->protocol == IPPROTO_TCP) {
skb->csum = 0;