nullnet.c File Reference

Null network device. More...

#include <stdint.h>
#include <errno.h>
#include <ipxe/iobuf.h>
#include <ipxe/netdevice.h>

Go to the source code of this file.

Functions
	FILE_LICENCE (GPL2_OR_LATER_OR_UBDL)
	FILE_SECBOOT (PERMITTED)
static int	null_open (struct net_device *netdev __unused)
static void	null_close (struct net_device *netdev __unused)
static int	null_transmit (struct net_device *netdev __unused, struct io_buffer *iobuf __unused)
static void	null_poll (struct net_device *netdev __unused)
static void	null_irq (struct net_device *netdev __unused, int enable __unused)

Variables
struct net_device_operations	null_netdev_operations

Detailed Description

Null network device.

Definition in file nullnet.c.

Function Documentation

FILE_LICENCE()

FILE_LICENCE

(

GPL2_OR_LATER_OR_UBDL

)

FILE_SECBOOT()

FILE_SECBOOT

(

PERMITTED

)

null_open()

int null_open ( struct net_device *netdev __unused )

static

Definition at line 38 of file nullnet.c.

                                                            {
        return -ENODEV;
};

References __unused, ENODEV, and netdev.

null_close()

void null_close ( struct net_device *netdev __unused )

static

Definition at line 42 of file nullnet.c.

                                                              {
        /* Do nothing */
};

References __unused, and netdev.

null_transmit()

int null_transmit ( struct net_device *netdev __unused, struct io_buffer *iobuf __unused )

static

Definition at line 46 of file nullnet.c.

                                                              {
        return -ENODEV;
};

References __unused, ENODEV, and netdev.

null_poll()

void null_poll ( struct net_device *netdev __unused )

static

Definition at line 51 of file nullnet.c.

                                                             {
        /* Do nothing */
}

References __unused, and netdev.

null_irq()

void null_irq ( struct net_device *netdev __unused, int enable __unused )

static

Definition at line 55 of file nullnet.c.

                                             {
        /* Do nothing */
}

References __unused, and netdev.

Variable Documentation

null_netdev_operations

struct net_device_operations null_netdev_operations

Initial value:

= {
        .open           = null_open,
        .close          = null_close,
        .transmit       = null_transmit,
        .poll           = null_poll,
        .irq            = null_irq,
}

Definition at line 60 of file nullnet.c.

                                                      {
        .open           = null_open,
        .close          = null_close,
        .transmit       = null_transmit,
        .poll           = null_poll,
        .irq            = null_irq,
};

Referenced by netdev_nullify().