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Annotation of qemu/roms/ipxe/src/usr/ifmgmt.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (C) 2007 Michael Brown <[email protected]>.
        !             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 <ipxe/console.h>
        !            26: #include <ipxe/netdevice.h>
        !            27: #include <ipxe/device.h>
        !            28: #include <ipxe/process.h>
        !            29: #include <ipxe/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 using %s on %s (%s)\n"
        !            91:                 "  [Link:%s, TX:%d TXE:%d RX:%d RXE:%d]\n",
        !            92:                 netdev->name, netdev_addr ( netdev ),
        !            93:                 netdev->dev->driver_name, netdev->dev->name,
        !            94:                 ( netdev_is_open ( netdev ) ? "open" : "closed" ),
        !            95:                 ( netdev_link_ok ( netdev ) ? "up" : "down" ),
        !            96:                 netdev->tx_stats.good, netdev->tx_stats.bad,
        !            97:                 netdev->rx_stats.good, netdev->rx_stats.bad );
        !            98:        if ( ! netdev_link_ok ( netdev ) ) {
        !            99:                printf ( "  [Link status: %s]\n",
        !           100:                         strerror ( netdev->link_rc ) );
        !           101:        }
        !           102:        ifstat_errors ( &netdev->tx_stats, "TXE" );
        !           103:        ifstat_errors ( &netdev->rx_stats, "RXE" );
        !           104: }
        !           105: 
        !           106: /**
        !           107:  * Wait for link-up, with status indication
        !           108:  *
        !           109:  * @v netdev           Network device
        !           110:  * @v max_wait_ms      Maximum time to wait, in ms
        !           111:  */
        !           112: int iflinkwait ( struct net_device *netdev, unsigned int max_wait_ms ) {
        !           113:        int key;
        !           114:        int rc;
        !           115: 
        !           116:        if ( netdev_link_ok ( netdev ) )
        !           117:                return 0;
        !           118: 
        !           119:        printf ( "Waiting for link-up on %s...", netdev->name );
        !           120: 
        !           121:        while ( 1 ) {
        !           122:                if ( netdev_link_ok ( netdev ) ) {
        !           123:                        rc = 0;
        !           124:                        break;
        !           125:                }
        !           126:                if ( max_wait_ms-- == 0 ) {
        !           127:                        rc = netdev->link_rc;
        !           128:                        break;
        !           129:                }
        !           130:                step();
        !           131:                if ( iskey() ) {
        !           132:                        key = getchar();
        !           133:                        if ( key == CTRL_C ) {
        !           134:                                rc = -ECANCELED;
        !           135:                                break;
        !           136:                        }
        !           137:                }
        !           138:                mdelay ( 1 );
        !           139:        }
        !           140: 
        !           141:        if ( rc == 0 ) {
        !           142:                printf ( " ok\n" );
        !           143:        } else {
        !           144:                printf ( " failed: %s\n", strerror ( rc ) );
        !           145:        }
        !           146: 
        !           147:        return rc;
        !           148: }

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