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/*
* Copyright (C) 2007 Michael Brown <mbrown@fensystems.co.uk>.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
FILE_LICENCE ( GPL2_OR_LATER );
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include <errno.h>
#include <ipxe/console.h>
#include <ipxe/netdevice.h>
#include <ipxe/device.h>
#include <ipxe/job.h>
#include <ipxe/monojob.h>
#include <ipxe/nap.h>
#include <usr/ifmgmt.h>
/** @file
*
* Network interface management
*
*/
/**
* Open network device
*
* @v netdev Network device
* @ret rc Return status code
*/
int ifopen ( struct net_device *netdev ) {
int rc;
if ( ( rc = netdev_open ( netdev ) ) != 0 ) {
printf ( "Could not open %s: %s\n",
netdev->name, strerror ( rc ) );
return rc;
}
return 0;
}
/**
* Close network device
*
* @v netdev Network device
*/
void ifclose ( struct net_device *netdev ) {
netdev_close ( netdev );
}
/**
* Print network device error breakdown
*
* @v stats Network device statistics
* @v prefix Message prefix
*/
static void ifstat_errors ( struct net_device_stats *stats,
const char *prefix ) {
unsigned int i;
for ( i = 0 ; i < ( sizeof ( stats->errors ) /
sizeof ( stats->errors[0] ) ) ; i++ ) {
if ( stats->errors[i].count )
printf ( " [%s: %d x \"%s\"]\n", prefix,
stats->errors[i].count,
strerror ( stats->errors[i].rc ) );
}
}
/**
* Print status of network device
*
* @v netdev Network device
*/
void ifstat ( struct net_device *netdev ) {
printf ( "%s: %s using %s on %s (%s)\n"
" [Link:%s, TX:%d TXE:%d RX:%d RXE:%d]\n",
netdev->name, netdev_addr ( netdev ),
netdev->dev->driver_name, netdev->dev->name,
( netdev_is_open ( netdev ) ? "open" : "closed" ),
( netdev_link_ok ( netdev ) ? "up" : "down" ),
netdev->tx_stats.good, netdev->tx_stats.bad,
netdev->rx_stats.good, netdev->rx_stats.bad );
if ( ! netdev_link_ok ( netdev ) ) {
printf ( " [Link status: %s]\n",
strerror ( netdev->link_rc ) );
}
ifstat_errors ( &netdev->tx_stats, "TXE" );
ifstat_errors ( &netdev->rx_stats, "RXE" );
}
/** Network device poller */
struct ifpoller {
/** Job control interface */
struct interface job;
/** Network device */
struct net_device *netdev;
/**
* Check progress
*
* @v ifpoller Network device poller
* @ret ongoing_rc Ongoing job status code (if known)
*/
int ( * progress ) ( struct ifpoller *ifpoller );
};
/**
* Report network device poller progress
*
* @v ifpoller Network device poller
* @v progress Progress report to fill in
* @ret ongoing_rc Ongoing job status code (if known)
*/
static int ifpoller_progress ( struct ifpoller *ifpoller,
struct job_progress *progress __unused ) {
/* Reduce CPU utilisation */
cpu_nap();
/* Hand off to current progress checker */
return ifpoller->progress ( ifpoller );
}
/** Network device poller operations */
static struct interface_operation ifpoller_job_op[] = {
INTF_OP ( job_progress, struct ifpoller *, ifpoller_progress ),
};
/** Network device poller descriptor */
static struct interface_descriptor ifpoller_job_desc =
INTF_DESC ( struct ifpoller, job, ifpoller_job_op );
/**
* Poll network device until completion
*
* @v netdev Network device
* @v timeout Timeout period, in ticks
* @v progress Method to check progress
* @ret rc Return status code
*/
static int ifpoller_wait ( struct net_device *netdev, unsigned long timeout,
int ( * progress ) ( struct ifpoller *ifpoller ) ) {
static struct ifpoller ifpoller = {
.job = INTF_INIT ( ifpoller_job_desc ),
};
ifpoller.netdev = netdev;
ifpoller.progress = progress;
intf_plug_plug ( &monojob, &ifpoller.job );
return monojob_wait ( "", timeout );
}
/**
* Check link-up progress
*
* @v ifpoller Network device poller
* @ret ongoing_rc Ongoing job status code (if known)
*/
static int iflinkwait_progress ( struct ifpoller *ifpoller ) {
struct net_device *netdev = ifpoller->netdev;
int ongoing_rc = netdev->link_rc;
/* Terminate successfully if link is up */
if ( ongoing_rc == 0 )
intf_close ( &ifpoller->job, 0 );
/* Otherwise, report link status as ongoing job status */
return ongoing_rc;
}
/**
* Wait for link-up, with status indication
*
* @v netdev Network device
* @v timeout Timeout period, in ticks
*/
int iflinkwait ( struct net_device *netdev, unsigned long timeout ) {
int rc;
/* Ensure device is open */
if ( ( rc = ifopen ( netdev ) ) != 0 )
return rc;
/* Return immediately if link is already up */
netdev_poll ( netdev );
if ( netdev_link_ok ( netdev ) )
return 0;
/* Wait for link-up */
printf ( "Waiting for link-up on %s", netdev->name );
return ifpoller_wait ( netdev, timeout, iflinkwait_progress );
}
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