gpxe/src/usr/ifmgmt.c

   1 /*
   2  * Copyright (C) 2007 Michael Brown <mbrown@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 }