- tcph->check = 0;
- tcph->check = tcp_v4_check(datalen,
- iph->saddr, iph->daddr,
- csum_partial((char *)tcph,
- datalen, 0));
+ if (!(rt->rt_flags & RTCF_LOCAL) &&
+ (*pskb)->dev->features & NETIF_F_ALL_CSUM) {
+ (*pskb)->ip_summed = CHECKSUM_PARTIAL;
+ (*pskb)->csum_start = skb_headroom(*pskb) +
+ skb_network_offset(*pskb) +
+ iph->ihl * 4;
+ (*pskb)->csum_offset = offsetof(struct tcphdr, check);
+ tcph->check = ~tcp_v4_check(datalen,
+ iph->saddr, iph->daddr, 0);
+ } else {
+ tcph->check = 0;
+ tcph->check = tcp_v4_check(datalen,
+ iph->saddr, iph->daddr,
+ csum_partial((char *)tcph,
+ datalen, 0));
+ }