HP UX 11i v2 Networking Software manual 150

Sample Programs

Connection Mode

/* send the BIND_REQ and wait for the OK_ACK */ put_ctrl(fd, sizeof(dl_bind_req_t), 0); get_msg(fd);

check_ctrl(DL_BIND_ACK);

/* return the DLSAP to the caller */ *dlsap_len = bind_ack->dl_addr_length;

dlsap_addr = (u_char *)ctrl_area + bind_ack->dl_addr_offset; memcpy(dlsap, dlsap_addr, *dlsap_len);

}

/************************************************************************** unbind, detach, and close

**************************************************************************/

void
cleanup(fd)
int	fd;	/* file descriptor */
{

dl_unbind_req_t *unbind_req = (dl_unbind_req_t *)ctrl_area; dl_detach_req_t *detach_req = (dl_detach_req_t *)ctrl_area;

/* unbind */

unbind_req->dl_primitive = DL_UNBIND_REQ; put_ctrl(fd, sizeof(dl_unbind_req_t), 0); get_msg(fd);

check_ctrl(DL_OK_ACK);

/* detach */

detach_req->dl_primitive = DL_DETACH_REQ; put_ctrl(fd, sizeof(dl_detach_req_t), 0); get_msg(fd);

check_ctrl(DL_OK_ACK);

/* close */ close(fd);

}

/************************************************************************** send a connect request to a DLSAP

**************************************************************************/

void

connect_req(fd, dlsap, dlsap_len)

int	fd;	/* file descriptor */
u_char	*dlsap;	/* DLSAP to connect with */
int	dlsap_len;	/* length of dlsap */
{
dl_connect_req_t		*con_req = (dl_connect_req_t *)ctrl_area;
dl_connect_res_t		*con_res = (dl_connect_res_t *)ctrl_area;
u_char	*tdlsap;

/* fill in the connect request */

con_req->dl_primitive = DL_CONNECT_REQ; con_req->dl_dest_addr_length = dlsap_len; con_req->dl_dest_addr_offset = sizeof(dl_connect_req_t);

/* QOS is not supported; these fields must be set to zero */ con_req->dl_qos_length = 0;

con_req->dl_qos_offset = 0;

150 Appendix A