HP B2355-90138 manual Dlpi Example Program

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LLA and DLPI Example Programs

DLPI Example Program

}

/*

We're finished with PART 1. Now call cleanup to unbind, then detach, then close the device file.

*/

cleanup(send_fd); cleanup(recv_fd);

/*

PART 2 of program. Demonstrate connectionless data transfer with LLC SNAP SAP header.

*/

/*

As demonstrated in the first part of this program we must first open the DLPI device file, /dev/dlpi, and attach to a PPA.

*/

send_fd = attach(); recv_fd = attach();

/*

The first method for binding a SNAP protocol value (which is demonstrated below) requires the user to first bind the SNAP SAP 0xAA, then issue a subsequent bind with class DL_HIERARCHICAL_BIND with the 5 bytes of SNAP information.

The second method (which is not demonstrated in this program) is to bind any supported protocol value (see section 5) and then issue a subsequent bind with class DL_PEER_BIND. The data area area of the subsequent bind should include 6 bytes of data, the first byte being the SNAP SAP 0xAA followed by 5 bytes of SNAP information.

*/

bind(send_fd, SNAP_SAP, 0, DL_CLDLS, sdlsap, &sdlsap_len); bind(recv_fd, SNAP_SAP, 0, DL_CLDLS, rdlsap, &rdlsap_len);

/*

Now we must complete the binding of the SNAP protocol value with the subsequent bind request and a subsequent bind class of DL_HIERARCHICAL_BIND.

*/

subs_bind(send_fd, SEND_SNAP_SAP, 5, DL_HIERARCHICAL_BIND, sdlsap,&sdlsap_len);

subs_bind(recv_fd, RECV_SNAP_SAP, 5, DL_HIERARCHICAL_BIND, rdlsap,&rdlsap_len);

/* print the DLSAPs we got back from the binds */ print_dlsap(”sending DLSAP = ”, sdlsap, sdlsap_len); print_dlsap(”receiving DLSAP = ”, rdlsap, rdlsap_len);

/*

Time to send some data. We'll send 5 data packets in sequence. */

for(i = 0; i < 5; i++) {

/* send (i+1)*10 data bytes with the first byte = i */

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Chapter 2

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Contents LLA to Dlpi Migration Guide Legal Notices Page Page Contents Contents Printing History Page Preface Page LLA to Dlpi Migration LLA to Dlpi Migration Device Files Ioctl Requests LLA ioctl req type Dlpi PrimitiveLogreadtimeout Transmitting Data Receiving Data Receiving Data LLA and Dlpi Example LLA and Dlpi Example Programs Dlpi Example Program Snap SAPStruct strbuf databuf = Dlpi Example Program Dlpi Example Program Dlpi Example Program Dlpi Example Program Dlpi Example Program Dlpi Example Program Dlpi Example Program Dlpi Example Program Dlpi Example Program LLA Example Program LLA Example Program LLA Example Program LLA Example Program LLA Example Program LLA Example Program LLA Example Program LLA Example Program LLA Example Program Index