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aen(7A)

Amiga Ethernet Device

From the original Amiga UNIX 2.1 manual. Some things it mentions may not be in this release.

Also by this name: aen(1A), Amiga-specific commands

NAME

/dev/aen0 - Amiga Ethernet Device

SYNOPSIS

#include <sys/amiga/aenuser.h>
int fd;
fd = open("/dev/aen0", mode);

DESCRIPTION

/dev/aen is a special file which allows access to the ethernet device and associated incoming and outgoing packets.

IOCTLS

AEN_CLEAR_STATUS: Zeros out all status registers.
AEN_GET_STATUS: Get the following information:

typedef struct
{


    enum BOARD_STATE		board_state;


    long			packets_sent;


    long			packets_received;


    int				allocbs_failed;


    int				couldnt_put;


    int				memory_error;


    int				miss_error;


    int				collision_error;


    int				babble_error;


    int				board_debug;
} aen_status_t;

AEN_GET_CONFIG: Get the following information:

typedef struct
{


    long			board_base;	 /* Board config location */


    int				board_debug;


    unsigned char		paddress[6];	 /* Physical address */


    unsigned char		laddress[8];	 /* Logical address filter */


    int				mode;		 /* permiscuious mode? */
} aen_config_t;

AEN_SET_CONFIG: Set the configuration information.
AEN_NUMBER_OF_BOARDS: return the number of boards currently configured.

FILES

/dev/aen? - special file for accessing ethernet packets

WARNING

Although this interface provides some protection, it is possible to crash the ethernet board if invalid configuration information is given. The permissions of /dev/aen? reflect this; only priveleged, trusted programs will write to this interface.