The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

FreeBSD/Linux Kernel Cross Reference
sys/netinet/tcp_hostcache.h

Version: -  FREEBSD  -  FREEBSD-13-STABLE  -  FREEBSD-13-0  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  l41  -  OPENBSD  -  linux-2.6  -  MK84  -  PLAN9  -  xnu-8792 
SearchContext: -  none  -  3  -  10 

    1 /*-
    2  * Copyright (c) 2002 Andre Oppermann, Internet Business Solutions AG
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    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
   15  *    permission.
   16  *
   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
   27  * SUCH DAMAGE.
   28  *
   29  * $FreeBSD: releng/9.2/sys/netinet/tcp_hostcache.h 185420 2008-11-28 23:39:25Z zec $
   30  */
   31 
   32 /*
   33  * Many thanks to jlemon for basic structure of tcp_syncache which is being
   34  * followed here.
   35  */
   36 
   37 #ifndef _NETINET_TCP_HOSTCACHE_H_
   38 #define _NETINET_TCP_HOSTCACHE_H_
   39 
   40 TAILQ_HEAD(hc_qhead, hc_metrics);
   41 
   42 struct hc_head {
   43         struct hc_qhead hch_bucket;
   44         u_int           hch_length;
   45         struct mtx      hch_mtx;
   46 };
   47 
   48 struct hc_metrics {
   49         /* housekeeping */
   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 */
   67 };
   68 
   69 struct tcp_hostcache {
   70         struct  hc_head *hashbase;
   71         uma_zone_t zone;
   72         u_int   hashsize;
   73         u_int   hashmask;
   74         u_int   bucket_limit;
   75         u_int   cache_count;
   76         u_int   cache_limit;
   77         int     expire;
   78         int     prune;
   79         int     purgeall;
   80 };
   81 
   82 #endif /* !_NETINET_TCP_HOSTCACHE_H_*/

Cache object: 4e19b5719b4d65676f17313ca277b6a7


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.