Hello, I am having some trouble figuring out how to re-calculate the tcp/ip checksums after pulling a packet into user space with libnetfilter_queue. In a netfilter hook I was able to use this: tcph->check = 0; tcph->check = tcp_v4_check(tcph, tcplen, iph->saddr, iph->daddr, csum_partial((char *)tcph, tcplen, 0)); iph->check = 0; ip_send_check(iph); //ip checksum In user space these functions tcp_v4_check(), csum_partial() and ip_send_check() do not exists. Are there equivalent functions in user space so I can recalculate the ip/tcp checksums before passing the new packet back to the kernel with nfq_set_verdict()? Thanks. -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
