- struct rtable *rt = skb ? (struct rtable*)skb->dst : NULL;
-
- if (!opt) {
- opt = &(IPCB(skb)->opt);
- iph = skb_network_header(skb);
- opt->optlen = ((struct iphdr *)iph)->ihl*4 - sizeof(struct iphdr);
- optptr = iph + sizeof(struct iphdr);
- opt->is_data = 0;
- } else {
- optptr = opt->is_data ? opt->__data :
- (unsigned char *)&(ip_hdr(skb)[1]);
- iph = optptr - sizeof(struct iphdr);
- }
+ struct rtable *rt = NULL;
+
+ if (skb != NULL) {
+ rt = skb->rtable;
+ optptr = (unsigned char *)&(ip_hdr(skb)[1]);
+ } else
+ optptr = opt->__data;
+ iph = optptr - sizeof(struct iphdr);