New netgraph node type ng_one2many(4).

1 files changed, 112 insertions, 0 deletions

diff --git a/sys/netgraph/ng_one2many.h b/sys/netgraph/ng_one2many.h
new file mode 100644
index 0000000..182a7d1
--- /dev/null
+++ b/sys/netgraph/ng_one2many.h
@@ -0,0 +1,112 @@
+
+/*
+ * ng_one2many.h
+ *
+ * Copyright (c) 2000 Whistle Communications, Inc.
+ * All rights reserved.
+ * 
+ * Subject to the following obligations and disclaimer of warranty, use and
+ * redistribution of this software, in source or object code forms, with or
+ * without modifications are expressly permitted by Whistle Communications;
+ * provided, however, that:
+ * 1. Any and all reproductions of the source or object code must include the
+ *    copyright notice above and the following disclaimer of warranties; and
+ * 2. No rights are granted, in any manner or form, to use Whistle
+ *    Communications, Inc. trademarks, including the mark "WHISTLE
+ *    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
+ *    such appears in the above copyright notice or in the software.
+ * 
+ * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
+ * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
+ * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
+ * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+ * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
+ * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
+ * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
+ * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
+ * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
+ * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+ * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER 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 WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * Author: Archie Cobbs <archie@freebsd.org>
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _NETGRAPH_NG_ONE2MANY_H_
+#define _NETGRAPH_NG_ONE2MANY_H_
+
+/* Node type name and magic cookie */
+#define NG_ONE2MANY_NODE_TYPE		"one2many"
+#define NGM_ONE2MANY_COOKIE		971111383
+
+/* Hook names */
+#define NG_ONE2MANY_HOOK_ONE		"one"
+#define NG_ONE2MANY_HOOK_MANY_PREFIX	"many"	 /* append decimal integer */
+#define NG_ONE2MANY_HOOK_MANY_FMT	"many%d" /* for use with printf(3) */
+
+/* Maximum number of supported "many" links */
+#define NG_ONE2MANY_MAX_LINKS		64
+
+/* Link number used to indicate the "one" hook */
+#define NG_ONE2MANY_ONE_LINKNUM		(-1)
+
+/* Algorithms for outgoing packet distribution (XXX only one so far) */
+#define NG_ONE2MANY_XMIT_ROUNDROBIN	1	/* round-robin delivery */
+
+/* Algorithms for detecting link failure (XXX only one so far) */
+#define NG_ONE2MANY_FAIL_MANUAL		1	/* use enabledLinks[] array */
+
+/* Node configuration structure */
+struct ng_one2many_config {
+	u_int32_t	xmitAlg;		/* how to distribute packets */
+	u_int32_t	failAlg;		/* how to detect link failure */
+	u_char		enabledLinks[NG_ONE2MANY_MAX_LINKS];
+};
+
+/* Keep this in sync with the above structure definition */
+#define NG_ONE2MANY_CONFIG_TYPE_INFO(atype)	{		\
+	{							\
+	  { "xmitAlg",		&ng_parse_uint64_type	},	\
+	  { "failAlg",		&ng_parse_uint64_type	},	\
+	  { "enabledLinks",	(atype)			},	\
+	  { NULL }						\
+	}							\
+}
+
+/* Statistics structure (one for each link) */
+struct ng_one2many_link_stats {
+	u_int64_t	recvOctets;	/* total octets rec'd on link */
+	u_int64_t	recvPackets;	/* total pkts rec'd on link */
+	u_int64_t	xmitOctets;	/* total octets xmit'd on link */
+	u_int64_t	xmitPackets;	/* total pkts xmit'd on link */
+};
+
+/* Keep this in sync with the above structure definition */
+#define NG_ONE2MANY_LINK_STATS_TYPE_INFO	{		\
+	{							\
+	  { "recvOctets",	&ng_parse_uint64_type	},	\
+	  { "recvPackets",	&ng_parse_uint64_type	},	\
+	  { "xmitOctets",	&ng_parse_uint64_type	},	\
+	  { "xmitPackets",	&ng_parse_uint64_type	},	\
+	  { NULL }						\
+	}							\
+}
+
+/* Netgraph control messages */
+enum {
+	NGM_ONE2MANY_SET_CONFIG,	/* set configuration */
+	NGM_ONE2MANY_GET_CONFIG,	/* get configuration */
+	NGM_ONE2MANY_GET_STATS,		/* get link stats */
+	NGM_ONE2MANY_CLR_STATS,		/* clear link stats */
+	NGM_ONE2MANY_GETCLR_STATS,	/* atomically get & clear link stats */
+};
+
+#endif /* _NETGRAPH_NG_ONE2MANY_H_ */
+