Null Ethernet Driver

Null Driver. More...

Collaboration diagram for Null Ethernet Driver:

Functions
int	NullEtherOutput (NUTDEVICE *dev, NETBUF *nb)
	Send Ethernet packet.
int	NullEtherInit (NUTDEVICE *dev)
	Initialize Ethernet hardware.
Variables
NUTDEVICE	devNullEther
	Device information structure.

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Detailed Description

Null Driver.

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Function Documentation

int NullEtherOutput	(	NUTDEVICE *	dev,
		NETBUF *	nb
	)

Send Ethernet packet.

This null devices silently discards all outgoing packets.

Parameters:

dev	Identifies the device to use.
nb	Network buffer structure containing the packet to be sent. The structure must have been allocated by a previous call NutNetBufAlloc().

Returns:

Always 0.

int NullEtherInit

(

NUTDEVICE *

dev

)

Initialize Ethernet hardware.

Parameters:

dev	Identifies the device to initialize.

Returns:

Always 0.

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Variable Documentation

NUTDEVICE devNullEther

Initial value:

 {
    0,                          
    {'e', 't', 'h', '0', 0, 0, 0, 0, 0},        
    IFTYP_NET,                  
    0,                          
    0,                          
    &ifn_eth0,                  
    NULL,                       
    NullEtherInit,              
    0,                          
    0,                          
    0,                          

    0,                          

    0,                          
    0,                          
    0                           
}

Device information structure.

A pointer to this structure must be passed to NutRegisterDevice() to bind this Ethernet device driver to the Nut/OS kernel. An application may then call NutNetIfConfig() with the name eth0 of this driver to initialize the network interface.