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/*
* Copyright (c) 2000 Paul Herman
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: tcpseq.c,v 1.3 2002/01/02 21:05:55 pherman Exp $
*/
#include "tcpstat.h"
struct tcpseq_ha {
struct in_addr src;
struct in_addr dst;
u_int port;
};
struct tcpseq_hash {
struct tcpseq_hash *next;
struct tcpseq_ha addr;
u_int seq;
u_int ack;
};
struct tcpseq_stats {
u_int opened_connections; /* doesn't include full */
u_int closed_connections; /* doesn't include full */
u_int full_connections; /* opened AND closed */
};
struct tcpseq_hash hash_first;
int tcpseq_addtostats(packet_data *pd) {
u_char flags;
struct tcpseq_ha test_ha;
struct tcphdr *tp = NULL;
struct ip *ip;
#ifdef INET6
int is_ip6 = 0;
struct ip6_hdr *ip6;
ip6 = (struct ip6_hdr *) &pd->data.ip6.hdr;
if (is_ip6_packet(pd))
tp= &(pd->data.ip6.body.tcphdr);
#endif
ip = (struct ip *) &pd->data.ip.hdr;
if (is_ip_packet(pd))
tp= &(pd->data.ip.body.tcphdr);
if (tp == NULL) return -1;
flags = tp->th_flags;
if (flags & TH_ACK) {
bzero(&test_ha, sizeof(test_ha));
}
return 0;
}
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