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Annotation of qemu/roms/ipxe/src/net/nullnet.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (C) 2006 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 <stdint.h>
        !            22: #include <errno.h>
        !            23: #include <ipxe/iobuf.h>
        !            24: #include <ipxe/netdevice.h>
        !            25: 
        !            26: /** @file
        !            27:  *
        !            28:  * Null network device
        !            29:  *
        !            30:  */
        !            31: 
        !            32: static int null_open ( struct net_device *netdev __unused ) {
        !            33:        return -ENODEV;
        !            34: };
        !            35: 
        !            36: static void null_close ( struct net_device *netdev __unused ) {
        !            37:        /* Do nothing */
        !            38: };
        !            39: 
        !            40: static int null_transmit ( struct net_device *netdev __unused,
        !            41:                           struct io_buffer *iobuf __unused ) {
        !            42:        return -ENODEV;
        !            43: };
        !            44: 
        !            45: static void null_poll ( struct net_device *netdev __unused ) {
        !            46:        /* Do nothing */
        !            47: }
        !            48: 
        !            49: static void null_irq ( struct net_device *netdev __unused,
        !            50:                       int enable __unused ) {
        !            51:        /* Do nothing */
        !            52: }
        !            53: 
        !            54: struct net_device_operations null_netdev_operations = {
        !            55:        .open           = null_open,
        !            56:        .close          = null_close,
        !            57:        .transmit       = null_transmit,
        !            58:        .poll           = null_poll,
        !            59:        .irq            = null_irq,
        !            60: };

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