2008-11-28 23:39:25 +00:00
|
|
|
/*-
|
|
|
|
|
* Copyright (c) 2002 Andre Oppermann, Internet Business Solutions AG
|
|
|
|
|
* 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.
|
|
|
|
|
* 3. The name of the author may not be used to endorse or promote
|
|
|
|
|
* products derived from this software without specific prior written
|
|
|
|
|
* permission.
|
|
|
|
|
*
|
|
|
|
|
* 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.
|
|
|
|
|
*
|
|
|
|
|
* $FreeBSD$
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Many thanks to jlemon for basic structure of tcp_syncache which is being
|
|
|
|
|
* followed here.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
#ifndef _NETINET_TCP_HOSTCACHE_H_
|
|
|
|
|
#define _NETINET_TCP_HOSTCACHE_H_
|
|
|
|
|
|
|
|
|
|
TAILQ_HEAD(hc_qhead, hc_metrics);
|
|
|
|
|
|
|
|
|
|
struct hc_head {
|
|
|
|
|
struct hc_qhead hch_bucket;
|
|
|
|
|
u_int hch_length;
|
|
|
|
|
struct mtx hch_mtx;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
struct hc_metrics {
|
|
|
|
|
/* housekeeping */
|
|
|
|
|
TAILQ_ENTRY(hc_metrics) rmx_q;
|
|
|
|
|
struct hc_head *rmx_head; /* head of bucket tail queue */
|
|
|
|
|
struct in_addr ip4; /* IP address */
|
|
|
|
|
struct in6_addr ip6; /* IP6 address */
|
2014-09-10 16:26:18 +00:00
|
|
|
uint32_t ip6_zoneid; /* IPv6 scope zone id */
|
2008-11-28 23:39:25 +00:00
|
|
|
/* endpoint specific values for tcp */
|
|
|
|
|
u_long rmx_mtu; /* MTU for this path */
|
|
|
|
|
u_long rmx_ssthresh; /* outbound gateway buffer limit */
|
|
|
|
|
u_long rmx_rtt; /* estimated round trip time */
|
|
|
|
|
u_long rmx_rttvar; /* estimated rtt variance */
|
|
|
|
|
u_long rmx_bandwidth; /* estimated bandwidth */
|
|
|
|
|
u_long rmx_cwnd; /* congestion window */
|
|
|
|
|
u_long rmx_sendpipe; /* outbound delay-bandwidth product */
|
|
|
|
|
u_long rmx_recvpipe; /* inbound delay-bandwidth product */
|
|
|
|
|
/* TCP hostcache internal data */
|
|
|
|
|
int rmx_expire; /* lifetime for object */
|
|
|
|
|
u_long rmx_hits; /* number of hits */
|
|
|
|
|
u_long rmx_updates; /* number of updates */
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
struct tcp_hostcache {
|
|
|
|
|
struct hc_head *hashbase;
|
|
|
|
|
uma_zone_t zone;
|
|
|
|
|
u_int hashsize;
|
|
|
|
|
u_int hashmask;
|
|
|
|
|
u_int bucket_limit;
|
|
|
|
|
u_int cache_count;
|
|
|
|
|
u_int cache_limit;
|
|
|
|
|
int expire;
|
|
|
|
|
int prune;
|
|
|
|
|
int purgeall;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
#endif /* !_NETINET_TCP_HOSTCACHE_H_*/
|
