| /*- |
| * 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 _BSD_NETINET_TCP_HOSTCACHE_H_ |
| #define _BSD_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 */ |
| /* 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 /* !_BSD_NETINET_TCP_HOSTCACHE_H_*/ |
