[vlan] Add support for IEEE 802.1Q VLANs

Originally-implemented-by: michael-dev@fami-braun.de
Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/hci/commands/vlan_cmd.c

@@ -0,0 +1,174 @@
+/*
+ * Copyright (C) 2010 Michael Brown <mbrown@fensystems.co.uk>.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <getopt.h>
+#include <ipxe/netdevice.h>
+#include <ipxe/command.h>
+#include <ipxe/vlan.h>
+
+/** @file
+ *
+ * VLAN commands
+ *
+ */
+
+static void vcreate_syntax ( char **argv ) {
+	printf ( "Usage:\n  %s --tag <tag> [--priority <priority] "
+		 "<trunk interface>\n", argv[0] );
+}
+
+static int vcreate_exec ( int argc, char **argv ) {
+	static struct option vcreate_opts[] = {
+		{ "help", 0, NULL, 'h' },
+		{ "tag", required_argument, NULL, 't' },
+		{ "priority", required_argument, NULL, 'p' },
+		{ NULL, 0, NULL, 0 },
+	};
+	const char *trunk_name;
+	const char *tag_text = NULL;
+	const char *priority_text = NULL;
+	struct net_device *trunk;
+	unsigned int tag;
+	unsigned int priority;
+	char *endp;
+	int c;
+	int rc;
+
+	/* Parse command line */
+	while ( ( c = getopt_long ( argc, argv, "ht:p:", vcreate_opts,
+				    NULL ) ) >= 0 ) {
+		switch ( c ) {
+		case 't':
+			tag_text = optarg;
+			break;
+		case 'p':
+			priority_text = optarg;
+			break;
+		case 'h':
+			/* Display help text */
+		default:
+			/* Unrecognised/invalid option */
+			vcreate_syntax ( argv );
+			return 1;
+		}
+	}
+	if ( optind != ( argc - 1 ) ) {
+		vcreate_syntax ( argv );
+		return 1;
+	}
+	trunk_name = argv[optind];
+	if ( ! tag_text ) {
+		vcreate_syntax ( argv );
+		return 1;
+	}
+
+	/* Identify network device */
+	trunk = find_netdev ( trunk_name );
+	if ( ! trunk ) {
+		printf ( "%s: no such interface\n", trunk_name );
+		return 1;
+	}
+	tag = strtoul ( tag_text, &endp, 10 );
+	if ( *endp ) {
+		printf ( "%s: invalid tag\n", tag_text );
+		return 1;
+	}
+	if ( priority_text ) {
+		priority = strtoul ( priority_text, &endp, 10 );
+		if ( *endp ) {
+			printf ( "%s: invalid priority\n", priority_text );
+			return 1;
+		}
+	} else {
+		priority = 0;
+	}
+
+	/* Create VLAN device */
+	if ( ( rc = vlan_create ( trunk, tag, priority ) ) != 0 ) {
+		printf ( "Could not create VLAN device: %s\n",
+			 strerror ( rc ) );
+		return 1;
+	}
+
+	return 0;
+}
+
+static void vdestroy_syntax ( char **argv ) {
+	printf ( "Usage:\n  %s <interface>\n", argv[0] );
+}
+
+static int vdestroy_exec ( int argc, char **argv ) {
+	static struct option vdestroy_opts[] = {
+		{ "help", 0, NULL, 'h' },
+		{ NULL, 0, NULL, 0 },
+	};
+	const char *netdev_name;
+	struct net_device *netdev;
+	int c;
+	int rc;
+
+	/* Parse command line */
+	while ( ( c = getopt_long ( argc, argv, "h", vdestroy_opts,
+				    NULL ) ) >= 0 ) {
+		switch ( c ) {
+		case 'h':
+			/* Display help text */
+		default:
+			/* Unrecognised/invalid option */
+			vdestroy_syntax ( argv );
+			return 1;
+		}
+	}
+	if ( optind != ( argc - 1 ) ) {
+		vdestroy_syntax ( argv );
+		return 1;
+	}
+	netdev_name = argv[optind];
+
+	/* Identify network device */
+	netdev = find_netdev ( netdev_name );
+	if ( ! netdev ) {
+		printf ( "%s: no such interface\n", netdev_name );
+		return 1;
+	}
+
+	/* Destroy VLAN device */
+	if ( ( rc = vlan_destroy ( netdev ) ) != 0 ) {
+		printf ( "Could not destroy VLAN device: %s\n",
+			 strerror ( rc ) );
+		return 1;
+	}
+
+	return 0;
+}
+
+struct command vlan_commands[] __command = {
+	{
+		.name = "vcreate",
+		.exec = vcreate_exec,
+	},
+	{
+		.name = "vdestroy",
+		.exec = vdestroy_exec,
+	},
+};