83 lines
2.9 KiB
C
83 lines
2.9 KiB
C
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/*-
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* Copyright (c) 2002 Andre Oppermann, Internet Business Solutions AG
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* Many thanks to jlemon for basic structure of tcp_syncache which is being
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* followed here.
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*/
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#ifndef _NETINET_TCP_HOSTCACHE_H_
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#define _NETINET_TCP_HOSTCACHE_H_
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TAILQ_HEAD(hc_qhead, hc_metrics);
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struct hc_head {
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struct hc_qhead hch_bucket;
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u_int hch_length;
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struct mtx hch_mtx;
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};
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struct hc_metrics {
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/* housekeeping */
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TAILQ_ENTRY(hc_metrics) rmx_q;
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struct hc_head *rmx_head; /* head of bucket tail queue */
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struct in_addr ip4; /* IP address */
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struct in6_addr ip6; /* IP6 address */
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/* endpoint specific values for tcp */
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u_long rmx_mtu; /* MTU for this path */
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u_long rmx_ssthresh; /* outbound gateway buffer limit */
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u_long rmx_rtt; /* estimated round trip time */
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u_long rmx_rttvar; /* estimated rtt variance */
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u_long rmx_bandwidth; /* estimated bandwidth */
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u_long rmx_cwnd; /* congestion window */
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u_long rmx_sendpipe; /* outbound delay-bandwidth product */
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u_long rmx_recvpipe; /* inbound delay-bandwidth product */
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/* TCP hostcache internal data */
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int rmx_expire; /* lifetime for object */
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u_long rmx_hits; /* number of hits */
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u_long rmx_updates; /* number of updates */
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};
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struct tcp_hostcache {
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struct hc_head *hashbase;
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uma_zone_t zone;
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u_int hashsize;
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u_int hashmask;
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u_int bucket_limit;
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u_int cache_count;
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u_int cache_limit;
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int expire;
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int prune;
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int purgeall;
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};
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#endif /* !_NETINET_TCP_HOSTCACHE_H_*/
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