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/*
* (C) 2012 by Pablo Neira Ayuso <pablo@gnumonks.org>
* (C) 2012 by On Waves ehf <http://www.on-waves.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later vers
*/
#include <netinet/ip.h>
#include <netinet/tcp.h>
#include "proto.h"
static unsigned int l4_tcp_pkt_hdr_len(const uint8_t *pkt)
{
const struct tcphdr *tcph = (const struct tcphdr *)pkt;
return tcph->doff << 2;
}
static unsigned int l4_tcp_pkt_no_data(const uint8_t *pkt)
{
const struct tcphdr *tcph = (const struct tcphdr *)pkt;
return tcph->syn || tcph->fin || tcph->rst || !tcph->psh;
}
static struct osmo_pcap_proto_l4 tcp = {
.l4protonum = IPPROTO_TCP,
.l4pkt_hdr_len = l4_tcp_pkt_hdr_len,
.l4pkt_no_data = l4_tcp_pkt_no_data,
};
void l4_tcp_init(void)
{
osmo_pcap_proto_l4_register(&tcp);
}
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