Add m-esr52 at 52.6.0

1 files changed, 130 insertions, 0 deletions

diff --git a/netwerk/sctp/src/user_route.h b/netwerk/sctp/src/user_route.h
new file mode 100755
index 000000000..82b07d769
--- /dev/null
+++ b/netwerk/sctp/src/user_route.h
@@ -0,0 +1,130 @@
+/*-
+ * Copyright (c) 1980, 1986, 1993
+ *	The Regents of the University of California.  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.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
+ *
+ */
+
+#ifndef _USER_ROUTE_H_
+#define _USER_ROUTE_H_
+
+/*
+ * Kernel resident routing tables.
+ *
+ * The routing tables are initialized when interface addresses
+ * are set by making entries for all directly connected interfaces.
+ */
+
+/*
+ * A route consists of a destination address and a reference
+ * to a routing entry.  These are often held by protocols
+ * in their control blocks, e.g. inpcb.
+ */
+
+struct sctp_route {
+	struct	sctp_rtentry *ro_rt;
+	struct	sockaddr ro_dst;
+};
+
+/*
+ * These numbers are used by reliable protocols for determining
+ * retransmission behavior and are included in the routing structure.
+ */
+struct sctp_rt_metrics_lite {
+	uint32_t rmx_mtu;	/* MTU for this path */
+#if 0
+	u_long	rmx_expire;	/* lifetime for route, e.g. redirect */
+	u_long	rmx_pksent;	/* packets sent using this route */
+#endif
+};
+
+/*
+ * We distinguish between routes to hosts and routes to networks,
+ * preferring the former if available.  For each route we infer
+ * the interface to use from the gateway address supplied when
+ * the route was entered.  Routes that forward packets through
+ * gateways are marked so that the output routines know to address the
+ * gateway rather than the ultimate destination.
+ */
+struct sctp_rtentry {
+#if 0
+	struct	radix_node rt_nodes[2];	/* tree glue, and other values */
+	/*
+	 * XXX struct rtentry must begin with a struct radix_node (or two!)
+	 * because the code does some casts of a 'struct radix_node *'
+	 * to a 'struct rtentry *'
+	 */
+#define	rt_key(r)	(*((struct sockaddr **)(&(r)->rt_nodes->rn_key)))
+#define	rt_mask(r)	(*((struct sockaddr **)(&(r)->rt_nodes->rn_mask)))
+	struct	sockaddr *rt_gateway;	/* value */
+	u_long	rt_flags;		/* up/down?, host/net */
+#endif
+	struct	ifnet *rt_ifp;		/* the answer: interface to use */
+	struct	ifaddr *rt_ifa;		/* the answer: interface address to use */
+	struct	sctp_rt_metrics_lite rt_rmx;	/* metrics used by rx'ing protocols */
+	long	rt_refcnt;		/* # held references */
+#if 0
+	struct	sockaddr *rt_genmask;	/* for generation of cloned routes */
+	caddr_t	rt_llinfo;		/* pointer to link level info cache */
+	struct	rtentry *rt_gwroute;	/* implied entry for gatewayed routes */
+	struct	rtentry *rt_parent; 	/* cloning parent of this route */
+#endif
+	struct	mtx rt_mtx;		/* mutex for routing entry */
+};
+
+#define	RT_LOCK_INIT(_rt)	mtx_init(&(_rt)->rt_mtx, "rtentry", NULL, MTX_DEF | MTX_DUPOK)
+#define	RT_LOCK(_rt)		mtx_lock(&(_rt)->rt_mtx)
+#define	RT_UNLOCK(_rt)		mtx_unlock(&(_rt)->rt_mtx)
+#define	RT_LOCK_DESTROY(_rt)	mtx_destroy(&(_rt)->rt_mtx)
+#define	RT_LOCK_ASSERT(_rt)	mtx_assert(&(_rt)->rt_mtx, MA_OWNED)
+
+#define	RT_ADDREF(_rt)	do {					\
+	RT_LOCK_ASSERT(_rt);					\
+	KASSERT((_rt)->rt_refcnt >= 0,				\
+		("negative refcnt %ld", (_rt)->rt_refcnt));	\
+	(_rt)->rt_refcnt++;					\
+} while (0)
+#define	RT_REMREF(_rt)	do {					\
+	RT_LOCK_ASSERT(_rt);					\
+	KASSERT((_rt)->rt_refcnt > 0,				\
+		("bogus refcnt %ld", (_rt)->rt_refcnt));	\
+	(_rt)->rt_refcnt--;					\
+} while (0)
+#define	RTFREE_LOCKED(_rt) do {					\
+		if ((_rt)->rt_refcnt <= 1) {			\
+			rtfree(_rt);				\
+		} else {					\
+			RT_REMREF(_rt);				\
+			RT_UNLOCK(_rt);				\
+		}						\
+		/* guard against invalid refs */		\
+		_rt = NULL;					\
+	} while (0)
+#define	RTFREE(_rt) do {					\
+		RT_LOCK(_rt);					\
+		RTFREE_LOCKED(_rt);				\
+} while (0)
+#endif