[autoboot] Merge "netboot" command into "autoboot"

Allow "autoboot" to accept an optional list of network devices, and
remove the "netboot" command.  This saves around 130 bytes.

The "netboot" command has existed for approximately 48 hours, so its
removal should not cause backwards compatibility issues for anyone.

Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/hci/commands/autoboot_cmd.c

 #include <ipxe/command.h>
 #include <ipxe/parseopt.h>
 #include <ipxe/netdevice.h>
+#include <hci/ifmgmt_cmd.h>
 #include <usr/autoboot.h>
 
 FILE_LICENCE ( GPL2_OR_LATER );
  *
  */
 
-/** "autoboot" options */
-struct autoboot_options {};
-
-/** "autoboot" option list */
-static struct option_descriptor autoboot_opts[] = {};
-
 /** "autoboot" command descriptor */
 static struct command_descriptor autoboot_cmd =
-	COMMAND_DESC ( struct autoboot_options, autoboot_opts, 0, 0,
-		       "",
-		       "Attempt to boot the system" );
+	COMMAND_DESC ( struct ifcommon_options, ifcommon_opts, 0, MAX_ARGUMENTS,
+		       "[<interface>...]", "Attempt to boot the system" );
 
 /**
  * "autoboot" command
  * @ret rc		Return status code
  */
 static int autoboot_exec ( int argc, char **argv ) {
-	struct autoboot_options opts;
-	int rc;
-
-	/* Parse options */
-	if ( ( rc = parse_options ( argc, argv, &autoboot_cmd, &opts ) ) != 0 )
-		return rc;
-
-	/* Try to boot */
-	if ( ( rc = autoboot() ) != 0 )
-		return rc;
-
-	return 0;
-}
-
-/** "netboot" options */
-struct netboot_options {};
-
-/** "netboot" option list */
-static struct option_descriptor netboot_opts[] = {};
-
-/** "netboot" command descriptor */
-static struct command_descriptor netboot_cmd =
-	COMMAND_DESC ( struct netboot_options, netboot_opts, 1, 1,
-		       "<interface>",
-		       "Attempt to boot the system from <interface>" );
-
-/**
- * "netboot" command
- *
- * @v argc		Argument count
- * @v argv		Argument list
- * @ret rc		Return status code
- */
-static int netboot_exec ( int argc, char **argv ) {
-	struct netboot_options opts;
-	struct net_device *netdev;
-	int rc;
-
-	/* Parse options */
-	if ( ( rc = parse_options ( argc, argv, &netboot_cmd, &opts ) ) != 0 )
-		return rc;
-
-	/* Parse interface */
-	if ( ( rc = parse_netdev ( argv[optind], &netdev ) ) != 0 )
-		return rc;
-
-	/* Try to boot */
-	if ( ( rc = netboot ( netdev ) ) != 0 )
-		return rc;
-
-	return 0;
+	return ifcommon_exec ( argc, argv, &autoboot_cmd, netboot, 0 );
 }
 
 /** Booting commands */
 		.name = "autoboot",
 		.exec = autoboot_exec,
 	},
-	{
-		.name = "netboot",
-		.exec = netboot_exec,
-	},
 };

src/usr/autoboot.c

 	return rc;
 }
 
+/**
+ * Close all open net devices
+ *
+ * Called before a fresh boot attempt in order to free up memory.  We
+ * don't just close the device immediately after the boot fails,
+ * because there may still be TCP connections in the process of
+ * closing.
+ */
+static void close_all_netdevs ( void ) {
+	struct net_device *netdev;
+
+	for_each_netdev ( netdev ) {
+		ifclose ( netdev );
+	}
+}
+
 /**
  * Boot from a network device
  *
 	unsigned int pxe_discovery_control;
 	int rc;
 
+	/* Close all other network devices */
+	close_all_netdevs();
+
 	/* Open device and display device status */
 	if ( ( rc = ifopen ( netdev ) ) != 0 )
 		return rc;
 	return -ENOENT;
 }
 
-/**
- * Close all open net devices
- *
- * Called before a fresh boot attempt in order to free up memory.  We
- * don't just close the device immediately after the boot fails,
- * because there may still be TCP connections in the process of
- * closing.
- */
-static void close_all_netdevs ( void ) {
-	struct net_device *netdev;
-
-	for_each_netdev ( netdev ) {
-		ifclose ( netdev );
-	}
-}
-
 /**
  * Boot the system
  */
 	int rc = -ENODEV;
 
 	/* If we have an identifable boot device, try that first */
-	close_all_netdevs();
 	if ( ( boot_netdev = find_boot_netdev() ) )
 		rc = netboot ( boot_netdev );
 
 	for_each_netdev ( netdev ) {
 		if ( netdev == boot_netdev )
 			continue;
-		close_all_netdevs();
 		rc = netboot ( netdev );
 	}