Add a node that looks to all the word like an ethernet but delivers its

ehternet frames to a netgraph  hook.

Submitted by: "Vitaly V. Belekhov" <vitaly@riss-telecom.ru>
translated to 5.0 by me. man page not yet written.

This node still needs a little work.. don't use yet. Not yet linked into
the build.

1 files changed, 100 insertions, 0 deletions

diff --git a/sys/netgraph/ng_eiface.h b/sys/netgraph/ng_eiface.h
new file mode 100644
index 0000000..493c0cb
--- /dev/null
+++ b/sys/netgraph/ng_eiface.h
@@ -0,0 +1,100 @@
+/*
+ * ng_eiface.h
+ *
+ * Copyright (c) 1999-2001, Vitaly V Belekhov
+ * 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 unmodified, 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.
+ *
+ * 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.
+ *
+ * 	$FreeBSD$
+ */
+
+#ifndef _NETGRAPH_EIFACE_H_
+#define _NETGRAPH_EIFACE_H_
+
+/* Node type name and magic cookie */
+#define NG_EIFACE_NODE_TYPE		"eiface"
+#define NGM_EIFACE_COOKIE		948105892
+
+/* Interface base name */
+#define NG_EIFACE_EIFACE_NAME		"nge"
+#define NG_EIFACE_EIFACE_NAME_MAX	15
+
+/* My hook names */
+#define NG_EIFACE_HOOK_ETHER		"ether"
+
+/* MTU bounds */
+#define NG_EIFACE_MTU_MIN		72
+#define NG_EIFACE_MTU_MAX		2312
+#define NG_EIFACE_MTU_DEFAULT		1500
+
+/* Netgraph commands */
+enum {
+	NGM_EIFACE_GET_IFNAME = 1,	/* returns struct ng_eiface_ifname */
+	NGM_EIFACE_GET_IFADDRS,		/* returns list of addresses */
+	NGM_EIFACE_SET,			/* set ethernet address */
+};
+
+struct ng_eiface_ifname {
+	char    ngif_name[NG_EIFACE_EIFACE_NAME_MAX + 1];
+};
+
+struct ng_eiface_par {
+    u_char oct0;
+    u_char oct1;
+    u_char oct2;
+    u_char oct3;
+    u_char oct4;
+    u_char oct5;
+};
+
+static const struct ng_parse_struct_info ng_eiface_par_fields = {
+  {
+    { "oct0",		&ng_parse_int8_type	},
+    { "oct1",		&ng_parse_int8_type	},
+    { "oct2",		&ng_parse_int8_type	},
+    { "oct3",		&ng_parse_int8_type	},
+    { "oct4",		&ng_parse_int8_type	},
+    { "oct5",		&ng_parse_int8_type	},
+    { NULL },
+  }
+};
+
+static const struct ng_parse_type ng_eiface_par_type = {
+	&ng_parse_struct_type,
+	&ng_eiface_par_fields
+};
+
+static const struct ng_cmdlist ng_eiface_cmdlist[] = {
+	{
+	  NGM_EIFACE_COOKIE,
+	  NGM_EIFACE_SET,
+	  "set",
+	  &ng_eiface_par_type,
+	  NULL
+	},
+	{ 0 }
+};
+
+
+#endif /* _NETGRAPH_EIFACE_H_ */