Content-type: text/html Man page of tra

tra

Section: Environments, Tables, and Troff Macros (7)
Index Return to Main Contents
 

NAME

tra - DETRA 4 Mb/s or 16 Mb/s Token Ring interface  

SYNOPSIS

controller tra0 at *

Entry in the system configuration file  

DESCRIPTION

The tra interface is a Token Ring TURBOchannel adapter that can operate at 4 Mb/s or 16 Mb/s. The adapter uses a TMS380 chip to implement the Token Ring protocol.

The host's Internet address is specified at boot time with a SIOCSIFADDR ioctl. Also the speed at which the interface should operate can be specified using the SIOCSMACSPEED ioctl. The default speed at which the interface will try and enter the ring is at 16 Mb/s. The other supported speed is 4 Mb/s. ifconfig(8) describes how to set the speed of the interface by using the speed option.

The maximum MAC frame size supported by the driver on a 4 Mb/s Token Ring network is 4136 and for a 16 Mb/s network it is 8232.

The SIOCRPHYSADDR ioctl can be used to read the physical address of the DETRA adapter.

The SIOCADDMULTI and SIOCDELMULTI ioctls can be used to add or delete functional addresses.

The SIOCRDCTRS ioctl can be used to read the Token Ring driver counters. The DETRA adapter status and characteristics can also be read through this ioctl by providing one of the following options: Reads the counters Reads the characteristics Reads the RFC 1231 mib entry Reads the RFC 1231 status entry

The driver does not support reporting information on the timer statistics as defined in RFC 1239.

The argument to this ioctl is a pointer to a counter or status structure, ctrreq, found in <net/if.h>. The structures defining the Token Ring counters and status maintained can be found in <netinet/if_trnstat.h>.

The SIOCENABLBACK and SIOCDISABLBACK ioctls can be used to enable and disable the interface loopback mode, respectively. The driver enables internal loopback only.

The SIOCIFRESET ioctl can be used to reset the adapter.  

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;
  static   struct  ifdevea  devea;
  /* Get a socket */
  s = socket(AF_INET,SOCK_DGRAM,0);
  if (s < 0) {
     perror("socket");
     exit(1);
  }
  strcpy(devea.ifr_name,"tra0");
  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 reset the adapter, use the SIOCIFRESET 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_name,"tra0");
  if (ioctl(s,SIOCIFRESET,&data) < 0) {
     perror("SIOCIFRESET:");
     exit(1);
  }
  close(s); }  

ERRORS

Diagnostic messages contain information provided by the tra driver and the adapter. The following messages contain information about the adapter's state, and are printed on the console. Each message begins with the adapter identification, including the number of the adapter: The driver received an adapter check interrupt. The reason for the interrupt is displayed. The driver could not get an aligned address for the System Status Block (SSB). (See Texas Instruments, TMS380 Second-Generation Token Ring User's Guide for an explanation of SSB.) The Bring Up Diagnostics (BUD) failed. The value of the command/status register and the reason for the failure are displayed. The driver received an unknown interrupt. An error while trying to write out the initialization block to the TMS380 Token Ring chip. The value of the command/status register is displayed in hexadecimal. The MAC_CLOSE command returned an unknown status to the driver. A request to close the MAC was previously issued to the adapter. A request to open the MAC was previously issued to the adapter. The command to open the MAC was rejected. The reason is displayed. The driver opened the adapter into the ring at the speed indicated. Only two speeds are supported - 4 Mb/s and 16 Mb/s. If either message is displayed, reset the adapter by issuing the following commands: % ifconfig tra0 down % ifconfig tra0 up If the message persists, an error is occurring while transmitting and receiving packets. You will need to investigate the error. The status of the ring. The driver has taken the adapter off the ring. A timeout occurred while waiting for the MAC_READ_ERROR_LOG command to complete. A timeout occurred while trying to close the MAC; the interface is down. A timeout occurred while waiting for the MAC_OPEN command to complete.  

RELATED INFORMATION

netstat(1), ifconfig(8), srconfig(8)

Network Programmer's Guide delim off


 

Index

NAME
SYNOPSIS
DESCRIPTION
EXAMPLES
ERRORS
RELATED INFORMATION

This document was created by man2html, using the manual pages.
Time: 02:40:27 GMT, October 02, 2010