NAME    [Toc]    [Back]

       te - TGEC Ethernet interface

SYNOPSIS    [Toc]    [Back]

       config_driver te

DESCRIPTION    [Toc]    [Back]

       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.

ERRORS    [Toc]    [Back]

       The diagnostic error messages contain relevant information
       provided by the TGEC.  The interface was handed a  message
       with  addresses formatted 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.

EXAMPLES    [Toc]    [Back]

       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("\n");
         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); }

SEE ALSO    [Toc]    [Back]

       arp(7), inet(7), netintro(7)



                                                            te(7)