Author: zec
Date: Fri Nov 28 23:39:25 2008
New Revision: 185420
URL: http://svn.freebsd.org/changeset/base/185420
Log:
Add an essential .h file that skipped from the last commit (r185419).
Pointy hat #1 on...
Pointed out by: bz
Added:
head/sys/netinet/tcp_hostcache.h (contents, props changed)
Added: head/sys/netinet/tcp_hostcache.h
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/netinet/tcp_hostcache.h Fri Nov 28 23:39:25 2008
(r185420)
@@ -0,0 +1,82 @@
+/*-
+ * 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 */
+ /* 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_*/
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