2 * Copyright (c) 2002 Andre Oppermann, Internet Business Solutions AG
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote
14 * products derived from this software without specific prior written
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * Many thanks to jlemon for basic structure of tcp_syncache which is being
37 #ifndef _NETINET_TCP_HOSTCACHE_H_
38 #define _NETINET_TCP_HOSTCACHE_H_
40 TAILQ_HEAD(hc_qhead, hc_metrics);
43 struct hc_qhead hch_bucket;
50 TAILQ_ENTRY(hc_metrics) rmx_q;
51 struct hc_head *rmx_head; /* head of bucket tail queue */
52 struct in_addr ip4; /* IP address */
53 struct in6_addr ip6; /* IP6 address */
54 /* endpoint specific values for tcp */
55 u_long rmx_mtu; /* MTU for this path */
56 u_long rmx_ssthresh; /* outbound gateway buffer limit */
57 u_long rmx_rtt; /* estimated round trip time */
58 u_long rmx_rttvar; /* estimated rtt variance */
59 u_long rmx_bandwidth; /* estimated bandwidth */
60 u_long rmx_cwnd; /* congestion window */
61 u_long rmx_sendpipe; /* outbound delay-bandwidth product */
62 u_long rmx_recvpipe; /* inbound delay-bandwidth product */
63 /* TCP hostcache internal data */
64 int rmx_expire; /* lifetime for object */
65 u_long rmx_hits; /* number of hits */
66 u_long rmx_updates; /* number of updates */
69 struct tcp_hostcache {
70 struct hc_head *hashbase;
82 #endif /* !_NETINET_TCP_HOSTCACHE_H_*/