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      1 /*
      2  * Copyright (C) 2007 Michael Brown <mbrown (at) fensystems.co.uk>.
      3  *
      4  * This program is free software; you can redistribute it and/or
      5  * modify it under the terms of the GNU General Public License as
      6  * published by the Free Software Foundation; either version 2 of the
      7  * License, or any later version.
      8  *
      9  * This program is distributed in the hope that it will be useful, but
     10  * WITHOUT ANY WARRANTY; without even the implied warranty of
     11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     12  * General Public License for more details.
     13  *
     14  * You should have received a copy of the GNU General Public License
     15  * along with this program; if not, write to the Free Software
     16  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
     17  */
     18 
     19 FILE_LICENCE ( GPL2_OR_LATER );
     20 
     21 #include <stdio.h>
     22 #include <getopt.h>
     23 #include <gpxe/netdevice.h>
     24 #include <gpxe/command.h>
     25 #include <usr/ifmgmt.h>
     26 #include <hci/ifmgmt_cmd.h>
     27 
     28 /** @file
     29  *
     30  * Network interface management commands
     31  *
     32  */
     33 
     34 /** Options shared by all if<xxx> commands */
     35 static struct option ifcommon_longopts[] = {
     36 	{ "help", 0, NULL, 'h' },
     37 	{ NULL, 0, NULL, 0 },
     38 };
     39 
     40 /**
     41  * Print syntax of if<xxx> command
     42  *
     43  * @v argv		Command arguments
     44  * @v verb		Verb describing the action of the command
     45  */
     46 static void ifcommon_syntax ( char **argv, const char *verb ) {
     47 	printf ( "Usage:\n"
     48 		 "  %s [<interface>] [<interface>...]\n"
     49 		 "\n"
     50 		 "%s the specified network interfaces\n",
     51 		 argv[0], verb );
     52 }
     53 
     54 /**
     55  * Execute if<xxx> command over all network devices
     56  *
     57  * @v payload		Command to execute
     58  * @ret rc		Exit code
     59  */
     60 static int ifcommon_do_all ( int ( * payload ) ( struct net_device * ) ) {
     61 	struct net_device *netdev;
     62 	int rc = 0;
     63 
     64 	/* Execute payload for each network device */
     65 	for_each_netdev ( netdev ) {
     66 		if ( payload ( netdev ) != 0 )
     67 			rc = 1;
     68 	}
     69 	return rc;
     70 }
     71 
     72 /**
     73  * Execute if<xxx> command over list of network devices
     74  *
     75  * @v payload		Command to execute
     76  * @ret rc		Exit code
     77  */
     78 static int ifcommon_do_list ( int ( * payload ) ( struct net_device * ),
     79 			      char **list, unsigned int count ) {
     80 	const char *netdev_name;
     81 	struct net_device *netdev;
     82 	int rc = 0;
     83 
     84 	while ( count-- ) {
     85 		netdev_name = *(list++);
     86 		netdev = find_netdev ( netdev_name );
     87 		if ( ! netdev ) {
     88 			printf ( "%s: no such interface\n", netdev_name );
     89 			rc = 1;
     90 			continue;
     91 		}
     92 		if ( payload ( netdev ) != 0 )
     93 			rc = 1;
     94 	}
     95 	return rc;
     96 }
     97 
     98 /**
     99  * Execute if<xxx> command
    100  *
    101  * @v argc		Argument count
    102  * @v argv		Argument list
    103  * @v payload		Command to execute
    104  * @v verb		Verb describing the action of the command
    105  * @ret rc		Exit code
    106  */
    107 int ifcommon_exec ( int argc, char **argv,
    108 		    int ( * payload ) ( struct net_device * ),
    109 		    const char *verb ) {
    110 	int c;
    111 
    112 	/* Parse options */
    113 	while ( ( c = getopt_long ( argc, argv, "h", ifcommon_longopts,
    114 				    NULL ) ) >= 0 ) {
    115 		switch ( c ) {
    116 		case 'h':
    117 			/* Display help text */
    118 		default:
    119 			/* Unrecognised/invalid option */
    120 			ifcommon_syntax ( argv, verb );
    121 			return 1;
    122 		}
    123 	}
    124 
    125 	if ( optind == argc ) {
    126 		return ifcommon_do_all ( payload );
    127 	} else {
    128 		return ifcommon_do_list ( payload, &argv[optind],
    129 					  ( argc - optind ) );
    130 	}
    131 }
    132 
    133 /* "ifopen" command */
    134 
    135 static int ifopen_payload ( struct net_device *netdev ) {
    136 	return ifopen ( netdev );
    137 }
    138 
    139 static int ifopen_exec ( int argc, char **argv ) {
    140 	return ifcommon_exec ( argc, argv, ifopen_payload, "Open" );
    141 }
    142 
    143 /* "ifclose" command */
    144 
    145 static int ifclose_payload ( struct net_device *netdev ) {
    146 	ifclose ( netdev );
    147 	return 0;
    148 }
    149 
    150 static int ifclose_exec ( int argc, char **argv ) {
    151 	return ifcommon_exec ( argc, argv, ifclose_payload, "Close" );
    152 }
    153 
    154 /* "ifstat" command */
    155 
    156 static int ifstat_payload ( struct net_device *netdev ) {
    157 	ifstat ( netdev );
    158 	return 0;
    159 }
    160 
    161 static int ifstat_exec ( int argc, char **argv ) {
    162 	return ifcommon_exec ( argc, argv,
    163 			       ifstat_payload, "Display status of" );
    164 }
    165 
    166 /** Interface management commands */
    167 struct command ifmgmt_commands[] __command = {
    168 	{
    169 		.name = "ifopen",
    170 		.exec = ifopen_exec,
    171 	},
    172 	{
    173 		.name = "ifclose",
    174 		.exec = ifclose_exec,
    175 	},
    176 	{
    177 		.name = "ifstat",
    178 		.exec = ifstat_exec,
    179 	},
    180 };
    181