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Annotation of qemu/roms/ipxe/src/net/nullnet.c, revision 1.1.1.1

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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