timod(7)                                                           timod(7)


   NAME
         timod - Transport Interface cooperating STREAMS module

   DESCRIPTION
         timod is a STREAMS module for use with the Transport Interface (TI)
         functions of the Network Services library.  The timod module converts
         a set of ioctl(2) calls into STREAMS messages that may be consumed by
         a transport protocol provider which supports the Transport Interface.
         This allows a user to initiate certain TI functions as atomic
         operations.

         The timod module must be pushed onto only a stream terminated by a
         transport protocol provider which supports the TI.

         All STREAMS messages, with the exception of the message types
         generated from the ioctl commands described below, will be
         transparently passed to the neighboring STREAMS module or driver.
         The messages generated from the following ioctl commands are
         recognized and processed by the timod module.  The format of the
         ioctl call is:

              #include <sys/stropts.h>
                          -
                          -
              struct strioctl strioctl;
                          -
                          -
              strioctl.iccmd = cmd;
              strioctl.ictimeout = INFTIM;
              strioctl.iclen = size;
              strioctl.icdp = (char *)buf
              ioctl(fildes, ISTR, &strioctl);

         Where, on issuance, size is the size of the appropriate TI message to
         be sent to the transport provider and on return size is the size of
         the appropriate TI message from the transport provider in response to
         the issued TI message.  buf is a pointer to a buffer large enough to
         hold the contents of the appropriate TI messages.  The TI message
         types are defined in <sys/tihdr.h>.  The possible values for the cmd
         field are:

         TIBIND        Bind an address to the underlying transport protocol
                        provider.  The message issued to the TIBIND ioctl is
                        equivalent to the TI message type TBINDREQ and the
                        message returned by the successful completion of the
                        ioctl is equivalent to the TI message type TBINDACK.

         TIUNBIND      Unbind an address from the underlying transport
                        protocol provider.  The message issued to the
                        TIUNBIND ioctl is equivalent to the TI message type
                        TUNBINDREQ and the message returned by the


   8/91                                                                 Page 1

   timod(7)                                                           timod(7)


                        successful completion of the ioctl is equivalent to
                        the TI message type TOKACK.

         TIGETINFO     Get the TI protocol specific information from the
                        transport protocol provider.  The message issued to
                        the TIGETINFO ioctl is equivalent to the TI message
                        type TINFOREQ and the message returned by the
                        successful completion of the ioctl is equivalent to
                        the TI message type TINFOACK.

         TIOPTMGMT     Get, set or negotiate protocol specific options with
                        the transport protocol provider.  The message issued
                        to the TIOPTMGMT ioctl is equivalent to the TI
                        message type TOPTMGMTREQ and the message returned by
                        the successful completion of the ioctl is equivalent
                        to the TI message type TOPTMGMTACK.

   FILES
         <sys/timod.h>
         <sys/tiuser.h>
         <sys/tihdr.h>
         <sys/errno.h>

   SEE ALSO
         tirdwr(7).
         Programmer's Guide: STREAMS.
         Programmer's Guide: Networking Interfaces.

   DIAGNOSTICS
         If the ioctl system call returns with a value greater than 0, the
         lower 8 bits of the return value will be one of the TI error codes as
         defined in <sys/tiuser.h>.  If the TI error is of type TSYSERR, then
         the next 8 bits of the return value will contain an error as defined
         in <sys/errno.h> [see intro(2)].



















   Page 2                                                                 8/91