te(7)							 Miscellaneous Information Manual						     te(7)

NAME

       te - TGEC Ethernet interface

SYNOPSIS

       config_driver te

DESCRIPTION

       The te interface provides access to a 10 Mb/s Ethernet network through the TGEC controller.

       The  host's Internet address is specified at boot time with an SIOCSIFADDR ioctl.  The te interface employs the address resolution protocol
       described in arp(7) to map dynamically between Internet and Ethernet addresses on the local network.

       The SIOCSPHYSADDR ioctl can be used to change the physical address of the TGEC.	The SIOCRPHYSADDR ioctl can be used to read  the  physical
       address of the TGEC.

       The  SIOCADDMULTI  and SIOCDELMULTI ioctls can be used to add or delete multicast addresses.  The TGEC recognizes a maximum of 12 multicast
       addresses.

       The SIOCRDCTRS and SIOCRDZCTRS ioctls can be used to read or ``read and clear'' the Ethernet driver counters.  The argument  to	these  two
       ioctls is a pointer to a counter structure, ctrreq, found in <net/if.h>.

       The SIOCENABLBACK and SIOCDISABLBACK ioctls can be used to enable and disable the interface loopback mode respectively.

EXAMPLES

       To  obtain  the	physical  address  of  the  adapter,  use  the SIOCRPHYSADDR ioctl as in the following program example: #include <stdio.h>
       /* standard I/O */ #include <errno.h>		  /* error numbers */ #include <sys/socket.h>	      /* socket  definitions  */  #include
       <sys/ioctl.h>	      /* ioctls */ #include <net/if.h>		   /* generic interface structures */

       main() {
	 int s,i;
	 struct  ifdevea  devea;
	 /* Get a socket */
	 s = socket(AF_INET,SOCK_DGRAM,0);
	 if (s < 0) {
	    perror("socket");
	    exit(1);
	 }
	 strcpy(devea.ifr_name,"te0");
	 if (ioctl(s,SIOCRPHYSADDR,&devea) < 0) {
	    perror(&devea.ifr_name[0]);
	    exit(1);
	 }
	 printf("Address is ");
	 for (i = 0; i < 6; i++)
	    printf("%X ", devea.default_pa[i] & 0xff);
	 printf("
");
	 close(s); }

       To  enable external loopback, use the SIOCENABLEBACK ioctl as in the following program example: #include <stdio.h>	       /* standard
       I/O */ #include <errno.h>	      /* error numbers */ #include <sys/socket.h>	  /* socket definitions */ #include  <sys/ioctl.h>
       /* ioctls */ #include <net/if.h> 	    /* generic interface structures */

       main() {
	 int s;
	 struct  ifreq	data;
	 /* Get a socket */
	 s = socket(AF_INET,SOCK_DGRAM,0);
	 if (s < 0) {
	    perror("socket");
	    exit(1);
	 }
	 strcpy(data.ifr,"te0");
	 if (ioctl(s,SIOCENABLEBACK,&data) < 0) {
	    perror("SIOCENABLEBACK:");
	    exit(1);
	 }
	 close(s); }

ERRORS

       The diagnostic error messages contain relevant information provided by the TGEC.  The interface was handed a message with addresses format-
       ted in an unsuitable address family, and the packet was dropped.  The TGEC hardware failed to reset itself properly.  The driver's  attempt
       to  allocate  a	buffer failed.	The driver's attempt to allocate a buffer failed.  Too many multicast requests have been made.	The shared
       memory block for the TGEC's local RAM buffer is missing from the CMOS configuration data.

RELATED INFORMATION

       arp(7), inet(7), netintro(7) delim off

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