C++ (Cpp) nwk_gen_frm_ctrl Examples

Example #1

File: nwk_gen.c Project: navinars/etz-main

void nwk_gen_header(buffer_t *buf, nwk_hdr_t *hdr)
{
    U8 nhdr_size = 0;
    hdr->nwk_fcf = nwk_gen_frm_ctrl(hdr);

    //lint --e{826} Suppress Info 826: Suspicious pointer-to-pointer conversion (area too small)
    // ex: *(U16 *)buf->dptr = hdr->nwk_fcf
    // this removes the lint warning for this block only

    // Calculate the size of the nwk header
    nhdr_size = 8;
    nhdr_size += (hdr->nwk_frm_ctrl.dest_ieee_addr_flag) ? 8 : 0;
    nhdr_size += (hdr->nwk_frm_ctrl.src_ieee_addr_flag) ? 8 : 0;
    nhdr_size += (hdr->nwk_frm_ctrl.mcast_flag) ? 1 : 0;

    // fill in the length and adjust the data pointer
    buf->dptr -= nhdr_size;
    buf->len += nhdr_size;

    // fill in the fields of the nwk header
    *(U16 *)buf->dptr = hdr->nwk_fcf;
    buf->dptr += sizeof(U16);

    *(U16 *)buf->dptr = hdr->dest_addr;
    buf->dptr += sizeof(U16);

    *(U16 *)buf->dptr = hdr->src_addr;
    buf->dptr += sizeof(U16);

    *buf->dptr++ = hdr->radius;
    *buf->dptr++ = hdr->seq_num;

    if (hdr->nwk_frm_ctrl.dest_ieee_addr_flag)
    {
        *(U64 *)buf->dptr = hdr->dest_ieee_addr;
        buf->dptr += sizeof(U64);
    }

    if (hdr->nwk_frm_ctrl.src_ieee_addr_flag)
    {
        *(U64 *)buf->dptr = hdr->src_ieee_addr;
        buf->dptr += sizeof(U64);
    }

    // roll back the dptr to the beginning of the header
    buf->dptr -= nhdr_size;
}

Example #2

File: nwk_gen.c Project: bocui107/freakz

/*
 * Generate the NWK header for the frame. This is the main function to
 * generate the NWK header. The NWK header consists of the following fields:
 * - Frame Control Field
 * - Destination Address
 * - Source Address
 * - Radius
 * - Sequence number
 * - Destination IEEE address  (optional)
 * - Source IEEE address       (optional)
 * - Multicast
 */
void nwk_gen_header(buffer_t *buf, nwk_hdr_t *hdr)
{
	U8 nhdr_size = 0;
	hdr->nwk_fcf = nwk_gen_frm_ctrl(hdr);

	/*
	 * ex: *(U16 *)buf->dptr = hdr->nwk_fcf
	 * this removes the lint warning for this block only
	 */

	/* Calculate the size of the nwk header */
	nhdr_size = 8;
	nhdr_size += (hdr->nwk_frm_ctrl.dest_ieee_addr_flag) ? 8 : 0;
	nhdr_size += (hdr->nwk_frm_ctrl.src_ieee_addr_flag) ? 8 : 0;
	nhdr_size += (hdr->nwk_frm_ctrl.mcast_flag) ? 1 : 0;

	/* fill in the length and adjust the data pointer */
	buf->dptr -= nhdr_size;
	buf->len += nhdr_size;

	/* fill in the fields of the nwk header */
	*(U16 *)buf->dptr = hdr->nwk_fcf;
	buf->dptr += sizeof(U16);

	*(U16 *)buf->dptr = hdr->dest_addr;
	buf->dptr += sizeof(U16);

	*(U16 *)buf->dptr = hdr->src_addr;
	buf->dptr += sizeof(U16);

	*buf->dptr++ = hdr->radius;
	*buf->dptr++ = hdr->seq_num;

	if (hdr->nwk_frm_ctrl.dest_ieee_addr_flag) {
		*(U64 *)buf->dptr = hdr->dest_ieee_addr;
		buf->dptr += sizeof(U64);
	}

	if (hdr->nwk_frm_ctrl.src_ieee_addr_flag) {
		*(U64 *)buf->dptr = hdr->src_ieee_addr;
		buf->dptr += sizeof(U64);
	}

	/* roll back the dptr to the beginning of the header */
	buf->dptr -= nhdr_size;
}