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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 <string.h>
     22 #include <stdio.h>
     23 #include <unistd.h>
     24 #include <errno.h>
     25 #include <console.h>
     26 #include <gpxe/netdevice.h>
     27 #include <gpxe/device.h>
     28 #include <gpxe/process.h>
     29 #include <gpxe/keys.h>
     30 #include <usr/ifmgmt.h>
     31 
     32 /** @file
     33  *
     34  * Network interface management
     35  *
     36  */
     37 
     38 /**
     39  * Open network device
     40  *
     41  * @v netdev		Network device
     42  * @ret rc		Return status code
     43  */
     44 int ifopen ( struct net_device *netdev ) {
     45 	int rc;
     46 
     47 	if ( ( rc = netdev_open ( netdev ) ) != 0 ) {
     48 		printf ( "Could not open %s: %s\n",
     49 			 netdev->name, strerror ( rc ) );
     50 		return rc;
     51 	}
     52 
     53 	return 0;
     54 }
     55 
     56 /**
     57  * Close network device
     58  *
     59  * @v netdev		Network device
     60  */
     61 void ifclose ( struct net_device *netdev ) {
     62 	netdev_close ( netdev );
     63 }
     64 
     65 /**
     66  * Print network device error breakdown
     67  *
     68  * @v stats		Network device statistics
     69  * @v prefix		Message prefix
     70  */
     71 static void ifstat_errors ( struct net_device_stats *stats,
     72 			    const char *prefix ) {
     73 	unsigned int i;
     74 
     75 	for ( i = 0 ; i < ( sizeof ( stats->errors ) /
     76 			    sizeof ( stats->errors[0] ) ) ; i++ ) {
     77 		if ( stats->errors[i].count )
     78 			printf ( "  [%s: %d x \"%s\"]\n", prefix,
     79 				 stats->errors[i].count,
     80 				 strerror ( stats->errors[i].rc ) );
     81 	}
     82 }
     83 
     84 /**
     85  * Print status of network device
     86  *
     87  * @v netdev		Network device
     88  */
     89 void ifstat ( struct net_device *netdev ) {
     90 	printf ( "%s: %s on %s (%s)\n"
     91 		 "  [Link:%s, TX:%d TXE:%d RX:%d RXE:%d]\n",
     92 		 netdev->name, netdev_addr ( netdev ), netdev->dev->name,
     93 		 ( ( netdev->state & NETDEV_OPEN ) ? "open" : "closed" ),
     94 		 ( netdev_link_ok ( netdev ) ? "up" : "down" ),
     95 		 netdev->tx_stats.good, netdev->tx_stats.bad,
     96 		 netdev->rx_stats.good, netdev->rx_stats.bad );
     97 	if ( ! netdev_link_ok ( netdev ) ) {
     98 		printf ( "  [Link status: %s]\n",
     99 			 strerror ( netdev->link_rc ) );
    100 	}
    101 	ifstat_errors ( &netdev->tx_stats, "TXE" );
    102 	ifstat_errors ( &netdev->rx_stats, "RXE" );
    103 }
    104 
    105 /**
    106  * Wait for link-up, with status indication
    107  *
    108  * @v netdev		Network device
    109  * @v max_wait_ms	Maximum time to wait, in ms
    110  */
    111 int iflinkwait ( struct net_device *netdev, unsigned int max_wait_ms ) {
    112 	int key;
    113 	int rc;
    114 
    115 	if ( netdev_link_ok ( netdev ) )
    116 		return 0;
    117 
    118 	printf ( "Waiting for link-up on %s...", netdev->name );
    119 
    120 	while ( 1 ) {
    121 		if ( netdev_link_ok ( netdev ) ) {
    122 			rc = 0;
    123 			break;
    124 		}
    125 		if ( max_wait_ms-- == 0 ) {
    126 			rc = netdev->link_rc;
    127 			break;
    128 		}
    129 		step();
    130 		if ( iskey() ) {
    131 			key = getchar();
    132 			if ( key == CTRL_C ) {
    133 				rc = -ECANCELED;
    134 				break;
    135 			}
    136 		}
    137 		mdelay ( 1 );
    138 	}
    139 
    140 	if ( rc == 0 ) {
    141 		printf ( " ok\n" );
    142 	} else {
    143 		printf ( " failed: %s\n", strerror ( rc ) );
    144 	}
    145 
    146 	return rc;
    147 }
    148