Michael Brown
44d5ef9d7d
If the network interface has only just been opened (e.g. by the "dhcp" command) then we should allow at least one opportunity for the card to update the link state before testing it, to avoid false positives. Signed-off-by: Michael Brown <mcb30@ipxe.org>
152 lines
3.4 KiB
C
152 lines
3.4 KiB
C
/*
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* Copyright (C) 2007 Michael Brown <mbrown@fensystems.co.uk>.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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FILE_LICENCE ( GPL2_OR_LATER );
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#include <string.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <errno.h>
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#include <ipxe/console.h>
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#include <ipxe/netdevice.h>
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#include <ipxe/device.h>
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#include <ipxe/process.h>
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#include <ipxe/keys.h>
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#include <usr/ifmgmt.h>
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/** @file
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*
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* Network interface management
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*
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*/
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/**
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* Open network device
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*
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* @v netdev Network device
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* @ret rc Return status code
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*/
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int ifopen ( struct net_device *netdev ) {
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int rc;
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if ( ( rc = netdev_open ( netdev ) ) != 0 ) {
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printf ( "Could not open %s: %s\n",
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netdev->name, strerror ( rc ) );
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return rc;
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}
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return 0;
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}
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/**
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* Close network device
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*
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* @v netdev Network device
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*/
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void ifclose ( struct net_device *netdev ) {
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netdev_close ( netdev );
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}
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/**
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* Print network device error breakdown
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*
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* @v stats Network device statistics
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* @v prefix Message prefix
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*/
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static void ifstat_errors ( struct net_device_stats *stats,
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const char *prefix ) {
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unsigned int i;
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for ( i = 0 ; i < ( sizeof ( stats->errors ) /
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sizeof ( stats->errors[0] ) ) ; i++ ) {
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if ( stats->errors[i].count )
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printf ( " [%s: %d x \"%s\"]\n", prefix,
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stats->errors[i].count,
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strerror ( stats->errors[i].rc ) );
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}
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}
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/**
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* Print status of network device
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*
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* @v netdev Network device
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*/
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void ifstat ( struct net_device *netdev ) {
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printf ( "%s: %s using %s on %s (%s)\n"
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" [Link:%s, TX:%d TXE:%d RX:%d RXE:%d]\n",
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netdev->name, netdev_addr ( netdev ),
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netdev->dev->driver_name, netdev->dev->name,
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( netdev_is_open ( netdev ) ? "open" : "closed" ),
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( netdev_link_ok ( netdev ) ? "up" : "down" ),
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netdev->tx_stats.good, netdev->tx_stats.bad,
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netdev->rx_stats.good, netdev->rx_stats.bad );
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if ( ! netdev_link_ok ( netdev ) ) {
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printf ( " [Link status: %s]\n",
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strerror ( netdev->link_rc ) );
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}
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ifstat_errors ( &netdev->tx_stats, "TXE" );
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ifstat_errors ( &netdev->rx_stats, "RXE" );
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}
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/**
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* Wait for link-up, with status indication
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*
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* @v netdev Network device
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* @v max_wait_ms Maximum time to wait, in ms
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*/
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int iflinkwait ( struct net_device *netdev, unsigned int max_wait_ms ) {
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int key;
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int rc;
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/* Allow link state to be updated */
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netdev_poll ( netdev );
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if ( netdev_link_ok ( netdev ) )
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return 0;
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printf ( "Waiting for link-up on %s...", netdev->name );
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while ( 1 ) {
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if ( netdev_link_ok ( netdev ) ) {
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rc = 0;
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break;
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}
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if ( max_wait_ms-- == 0 ) {
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rc = netdev->link_rc;
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break;
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}
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step();
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if ( iskey() ) {
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key = getchar();
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if ( key == CTRL_C ) {
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rc = -ECANCELED;
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break;
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}
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}
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mdelay ( 1 );
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}
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if ( rc == 0 ) {
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printf ( " ok\n" );
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} else {
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printf ( " failed: %s\n", strerror ( rc ) );
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}
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return rc;
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}
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