vcan_linkdata

Here is the definition:

typedef struct
  { long port1   CDEP_NOALIGN_ATTR;
    long id1     CDEP_NOALIGN_ATTR;
    long port2   CDEP_NOALIGN_ATTR;
    long id2     CDEP_NOALIGN_ATTR;
  } vcan_linkdata;

This is the driver-call-sub-structure that is used when 2 objects, usually of different ports, have to be linked. It is used in conjunction with the VCAN_LINK and the VCAN_UNLINK sub-function. When two objects are linked, data arriving on one object on one port is transferred to another object on the second port. Note that the two ports must be the ports of a single VME-CAN2 or VME-CAN4 card.

port1

This is the number of the first port. Both ports must be on the same card, so port1 DIV 2 must equal port2 DIV 2, DIV meaning an integer-division of numbers.

id1

This is the id of the first object that is to be linked.

port2

This is the number of the second port. Both ports must be on the same card, so port1 DIV 2 must equal port2 DIV 2, DIV meaning an integer-division of numbers.

id2

This is the id of the second object that is to be linked.