From 5c890d3c4f87203f516374e450d9631827416d52 Mon Sep 17 00:00:00 2001
From: Marko Zec <zec@FreeBSD.org>
Date: Fri, 28 Nov 2008 23:39:25 +0000
Subject: [PATCH] Add an essential .h file that skipped from the last commit
 (r185419).

Pointy hat #1 on...

Pointed out by:	bz
---
 sys/netinet/tcp_hostcache.h | 82 +++++++++++++++++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 sys/netinet/tcp_hostcache.h

diff --git a/sys/netinet/tcp_hostcache.h b/sys/netinet/tcp_hostcache.h
new file mode 100644
index 000000000000..8569edccec25
--- /dev/null
+++ b/sys/netinet/tcp_hostcache.h
@@ -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_*/