On Thursday 2012-01-05 06:31, vivek rajagopalan wrote: >Hi, > >I wrote an LKM and I am trying to get UDP port information from the >first fragmented packet received in PRE_ROUTING hook as follows > >struct iphdr *iph = (struct iphdr*) skb_network_header(skb); You want: struct iphdr *iph = ip_hdr(skb); >struct udphdr *udph = (struct udphdr *)(iph + (iph->ihl)*4); //or >(struct udphdr *)(skb->data + (iph->ihl)*4) and other such methods You need struct udphdr *udph = skb_header_pointer(...) -- To unsubscribe from this list: send the line "unsubscribe netfilter" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
