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
19FILE_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 */
44int 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 */
61void 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 */
71static 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 */
89void 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 */
111int 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