?? plugins-wimax-msg_ulmap.c
字號:
}
XBIT(data, 3, "Sounding symbol index");
XBIT(ncid, 7, "Number of CIDs");
XBIT(data, 1, "Reserved");
for (j = 0; j < ncid; j++) {
XBIT(data,12, "Shorted Basic CID");
XBIT(data, 2, "Power Assignment Method");
XBIT(data, 1, "Power boost");
XBIT(data, 1, "Multi-Antenna Flag");
XBIT(amod, 1, "Allocation Mode");
if (amod == 1) {
XBIT(data,12, "Band bit map");
XBIT(data, 2, "Reserved");
} else {
XBIT(data, 7, "Starting frequency band");
XBIT(data, 7, "Number of frequency bands");
}
if (srlf == 1) {
XBIT(data, 1, "Sounding_Relevance");
} else {
XBIT(data, 1, "Reserved");
}
if (sept == 0) {
XBIT(data, 5, "Cyclic time shift index m");
} else {
XBIT(data, 6, "Decimation offset d");
if (iafb == 1) {
XBIT(data, 1, "Use same symbol for additional feedback");
XBIT(data, 2, "Reserved");
} else {
XBIT(data, 3, "Reserved");
}
}
XBIT(data, 3, "Periodicity");
}
}
} else {
XBIT(data, 3, "Permutation");
XBIT(data, 6, "DL_PermBase");
XBIT(nssym, 3, "Num_Sounding_symbols");
for (i = 0; i < nssym; i++) {
XBIT(ncid, 7, "Number of CIDs");
XBIT(data, 1, "Reserved");
for (j = 0; j < ncid; j++) {
XBIT(data, 12, "Shortened basic CID");
if (srlf) {
XBIT(data, 1, "Sounding_Relevance");
XBIT(data, 3, "Reserved");
}
XBIT(data, 7, "Subchannel offset");
XBIT(data, 1, "Power boost");
XBIT(data, 3, "Number of subchannels");
XBIT(data, 3, "Periodicity");
XBIT(data, 2, "Power assignment method");
}
}
}
pad = BIT_PADDING(bit,8);
if (pad) {
proto_tree_add_text(tree, tvb, BITHI(bit,pad), "Padding: %d bits",pad);
bit += pad;
}
return BIT_TO_NIB(bit);
}
gint MIMO_UL_Enhanced_IE(proto_tree *uiuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb)
{
/* UL-MAP Extended-2 IE = 6 */
/* 8.4.5.4.20 [2] MIMO_UL_Enhanced_IE (not implemented) */
/* offset of TLV in nibbles, length of TLV in nibbles */
gint nib;
gint data;
proto_item *ti = NULL;
proto_item *tree = NULL;
nib = offset;
ti = proto_tree_add_text(uiuc_tree, tvb, NIBHI(offset, length), "MIMO_UL_Enhanced_IE");
tree = proto_item_add_subtree(ti, ett_302f);
XNIB(data, 1, "Extended-2 UIUC");
XNIB(data, 2, "Length");
proto_tree_add_text(tree, tvb, NIBHI(nib,length-3), "(not implemented)");
return nib;
}
gint HARQ_ULMAP_IE(proto_tree *uiuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb)
{
/* UL-MAP Extended-2 IE = 7 */
/* 8.4.5.4.24 HARQ_ULMAP_IE */
/* offset of TLV in nibbles, length of TLV in nibbles */
gint bit;
gint data;
proto_item *ti = NULL;
proto_item *tree = NULL;
gint bitlength;
gint lastbit;
gint pad, mode, alsi, nsub;
gint i;
bit = NIB_TO_BIT(offset);
bitlength = NIB_TO_BIT(length);
ti = proto_tree_add_text(uiuc_tree, tvb, NIBHI(offset, length), "HARQ_ULMAP_IE");
tree = proto_item_add_subtree(ti, ett_302j);
XBIT(data, 4, "Extended-2 UIUC");
XBIT(data, 8, "Length");
XBIT(RCID_Type, 2, "RCID_Type");
XBIT(data, 2, "Reserved");
lastbit = bit + bitlength -16 - 4;
while (bit < lastbit) {
XBIT(mode, 3, "Mode");
XBIT(alsi, 1, "Allocation Start Indication");
if (alsi == 1) {
XBIT(data, 8, "OFDMA Symbol offset");
XBIT(data, 7, "Subchannel offset");
XBIT(data, 1, "Reserved");
}
XBIT(nsub, 4, "N sub Burst");
for (i = 0; i < nsub; i++) {
if (mode == 0) {
bit += UL_HARQ_Chase_Sub_Burst_IE(tree, bufptr, bit, bitlength, tvb);
} else if (mode == 1) {
bit += UL_HARQ_IR_CTC_Sub_Burst_IE(tree, bufptr, bit, bitlength, tvb);
} else if (mode == 2) {
bit += UL_HARQ_IR_CC_Sub_Burst_IE(tree, bufptr, bit, bitlength, tvb);
} else if (mode == 3) {
bit += MIMO_UL_Chase_HARQ_Sub_Burst_IE(tree, bufptr, bit, bitlength, tvb);
} else if (mode == 4) {
bit += MIMO_UL_IR_HARQ__Sub_Burst_IE(tree, bufptr, bit, bitlength, tvb);
} else if (mode == 5) {
bit += MIMO_UL_IR_HARQ_for_CC_Sub_Burst_UIE(tree, bufptr, bit, bitlength, tvb);
} else if (mode == 6) {
bit += MIMO_UL_STC_HARQ_Sub_Burst_IE(tree, bufptr, bit, bitlength, tvb);
}
}
}
pad = NIB_TO_BIT(offset) + bitlength - bit;
if (pad) {
proto_tree_add_text(tree, tvb, BITHI(bit,pad), "Padding: %d bits",pad);
bit += pad;
}
return BIT_TO_NIB(bit);
}
gint HARQ_ACKCH_Region_Allocation_IE(proto_tree *uiuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb)
{
/* UL-MAP Extended-2 IE = 8 */
/* 8.4.5.4.25 [2] HARQ_ACKCH_Region_Allocation_IE */
/* offset of TLV in nibbles, length of TLV in nibbles */
gint bit;
gint data;
proto_item *ti = NULL;
proto_item *tree = NULL;
bit = NIB_TO_BIT(offset);
ti = proto_tree_add_text(uiuc_tree, tvb, NIBHI(offset, length), "HARQ_ACKCH_Region_IE");
tree = proto_item_add_subtree(ti, ett_302t);
XBIT(data, 4, "Extended-2 UIUC");
XBIT(data, 8, "Length");
XBIT(data, 8, "OFDMA Symbol Offset");
XBIT(data, 7, "Subchannel Offset");
XBIT(data, 5, "No. OFDMA Symbols");
XBIT(data, 4, "No. Subchannels");
return BIT_TO_NIB(bit);
}
gint AAS_SDMA_UL_IE(proto_tree *uiuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb)
{
/* UL-MAP Extended-2 IE = 0xE */
/* 8.4.5.4.27 [2] AAS_SDMA_UL_IE */
/* offset of TLV in nibbles, length of TLV in nibbles */
gint bit;
gint data;
proto_item *ti = NULL;
proto_item *tree = NULL;
gint nreg, pad, user, encm, ppmd, padj;
gint aasp = 0; /* TODO AAS UL preamble used */
gint ii, jj;
bit = NIB_TO_BIT(offset);
ti = proto_tree_add_text(uiuc_tree, tvb, NIBHI(offset, length), "AAS_SDMA_UL_IE");
tree = proto_item_add_subtree(ti, ett_302u);
XBIT(data, 4, "Extended-2 UIUC");
XBIT(data, 8, "Length");
XBIT(RCID_Type, 2, "RCID_Type");
XBIT(nreg, 4, "Num Burst Region");
XBIT(data, 2, "Reserved");
for (ii = 0; ii < nreg; ii++) {
XBIT(data,12, "Slot offset");
XBIT(data,10, "Slot duration");
XBIT(user, 3, "Number of users");
XBIT(data, 3, "Reserved");
for (jj = 0; jj < user; jj++) {
bit += RCID_IE(tree, bufptr, bit, length, tvb, RCID_Type);
XBIT(encm, 2, "Encoding Mode");
XBIT(padj, 1, "Power Adjust");
XBIT(ppmd, 1, "Pilot Pattern Modifier");
if (aasp) {
XBIT(data, 4, "Preamble Modifier Index");
}
if (ppmd) {
XBIT(data, 2, "Pilot Pattern");
XBIT(data, 2, "Reserved");
}
if (encm == 0) {
XBIT(data, 4, "DIUC");
XBIT(data, 2, "Repetition Coding Indication");
XBIT(data, 2, "Reserved");
}
if (encm == 1) {
XBIT(data, 4, "DIUC");
XBIT(data, 2, "Repetition Coding Indication");
XBIT(data, 4, "ACID");
XBIT(data, 1, "AI_SN");
XBIT(data, 1, "Reserved");
}
if (encm == 2) {
XBIT(data, 4, "N(EP)");
XBIT(data, 4, "N(SCH)");
XBIT(data, 2, "SPID");
XBIT(data, 4, "ACID");
XBIT(data, 1, "AI_SN");
XBIT(data, 1, "Reserved");
}
if (encm == 3) {
XBIT(data, 4, "DIUC");
XBIT(data, 2, "Repetition Coding Indication");
XBIT(data, 2, "SPID");
XBIT(data, 4, "ACID");
XBIT(data, 1, "AI_SN");
XBIT(data, 3, "Reserved");
}
if (padj) {
XBIT(data, 8, "Power Adjustment");
}
}
}
pad = BIT_PADDING(bit,8);
if (pad) {
proto_tree_add_text(tree, tvb, BITHI(bit, pad), "Padding: %d bits", pad);
bit += pad;
}
return BIT_TO_NIB(bit);
}
gint Feedback_Polling_IE(proto_tree *uiuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb)
{
/* UL-MAP Extended-2 IE = 0xF */
/* 8.4.5.4.28 [2] Feedback_Polling_IE */
/* offset of TLV in nibbles, length of TLV in nibbles */
gint bit;
gint data;
proto_item *ti = NULL;
proto_item *tree = NULL;
gint nalloc, dula, pad, adur;
gint i;
bit = NIB_TO_BIT(offset);
ti = proto_tree_add_text(uiuc_tree, tvb, NIBHI(offset, length), "Feedback_Polling_IE");
tree = proto_item_add_subtree(ti, ett_302v);
XBIT(data, 4, "Extended-2 UIUC");
XBIT(data, 8, "Length");
XBIT(nalloc, 4, "Num_Allocation");
XBIT(dula, 1, "Dedicated UL Allocation included");
XBIT(data, 3, "Reserved");
for (i = 0; i < nalloc; i++) {
XBIT(data,16, "Basic CID");
XBIT(adur, 3, "Allocation Duration (d)");
if (adur != 0) {
XBIT(data, 4, "Feedback type");
XBIT(data, 3, "Frame Offset");
XBIT(data, 2, "Period (p)");
if (dula == 1) {
XBIT(data, 4, "UIUC");
XBIT(data, 8, "OFDMA Symbol Offset");
XBIT(data, 7, "Subchannel offset");
XBIT(data, 3, "Duration");
XBIT(data, 2, "Repetition coding indication");
}
}
}
pad = BIT_PADDING(bit,8);
if (pad) {
proto_tree_add_text(tree, tvb, BITHI(bit, pad), "Padding: %d bits", pad);
bit += pad;
}
return BIT_TO_NIB(bit);
}
/********************************************************************
* UL-MAP Miscellany
*******************************************************************/
void lshift_bits(guint8 *buffer, gint bytes, gint bits)
{
/* left shift a buffer by specified number of bits */
/* used for ULMAP ExtIE CQICH alloc IE */
gint i;
gint xbits;
while (bits >= 8) {
for (i=1; i<bytes; i++)
buffer[i-1] = buffer[i];
bits -= 8;
bytes--;
}
if (bits > 0)
{
xbits = 8 - bits;
for (i = 0; i < (bytes-1); i++) {
buffer[i] <<= bits;
buffer[i] |= (buffer[i+1] >> xbits);
}
buffer[bytes-1] <<= bits;
}
}
/* Register Wimax Mac Payload Protocol and Dissector */
void proto_register_mac_mgmt_msg_ulmap(void)
{
if (proto_mac_mgmt_msg_ulmap_decoder == -1)
{
proto_mac_mgmt_msg_ulmap_decoder = proto_mac_mgmt_msg_dlmap_decoder;
proto_register_field_array(proto_mac_mgmt_msg_ulmap_decoder, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
}
gint dissect_ulmap_ie( proto_tree *ie_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb)
{
/* decode a single UL-MAP IE and return the
* length of the IE in nibbles
* offset = start of IE (nibbles)
* length = total length of bufptr (nibbles) */
proto_item *ti = NULL;
proto_tree *tree = NULL;
gint nibble;
gint uiuc, ext_uiuc, ext2_uiuc, len, aas_or_amc;
guint cid;
guint data;
guint32 data32;
nibble = offset;
UNREFERENCED_PARAMETER(length);
/* 8.4.5.4 UL-MAP IE format - table 287 */
cid = NIB_WORD(nibble, bufptr);
uiuc = NIB_NIBBLE(nibble + 4, bufptr);
if (uiuc == 0)
{
/* 8.4.5.4.9 FAST-FEEDBACK channel */
ti = proto_tree_add_text(ie_tree, tvb, NIBHI(nibble, 5+8), "FAST FEEDBACK Allocation IE");
tree = proto_item_add_subtree(ti, ett_ulmap_ffb);
proto_tree_add_uint(tree, hf_ulmap_ie_cid, tvb, NIBHI(nibble, 4), cid);
nibble += 4;
proto_tree_add_uint(tree, hf_ulmap_ie_uiuc, tvb, NIBHI(nibble, 1), uiuc);
nibble += 1;
data = NIB_LONG(nibble, bufptr);
proto_tree_add_uint(tree, hf_ulmap_uiuc0_symofs, tvb, NIBHI(nibble, 8), data);
proto_tree_add_uint(tree, hf_ulmap_uiuc0_subofs, tvb, NIBHI(nibble, 8), data);
proto_tree_add_uint(tree, hf_ulmap_uiuc0_numsym, tvb, NIBHI(nibble, 8), data);
proto_tree_add_uint(tree, hf_ulmap_uiuc0_numsub, tvb, NIBHI(nibble, 8), data);
proto_tree_add_uint(tree, hf_ulmap_uiuc0_rsv, tvb, NIBHI(nibble, 8), data);
nibble += 8;
}
else if (uiuc == 11)
{
/* 8.4.5.4.4.2 [2] extended-2 UIUC IE table 290b */
ext2_uiuc = NIB_NIBBLE(5+nibble, bufptr);
len = NIB_BYTE(5+nibble+1, bufptr);
ti = proto_tree_add_text(ie_tree, tvb, NIBHI(nibble, 5+3+len*2), "UIUC: %d (Extended-2 IE)", uiuc);
tree = proto_item_add_subtree(ti, ett_290b);
proto_tree_add_uint(tree, hf_ulmap_ie_cid, tvb, NIBHI(nibble, 4), cid);
nibble += 4;
proto_tree_add_uint(tree, hf_ulmap_ie_uiuc, tvb, NIBHI(nibble, 1), uiuc);
nibble += 1;
/*
proto_tree_add_uint(tree, hf_ulmap_uiuc11_ext, tvb, NIBHI(nibble, 1), ext2_uiuc);
nibble += 1;
proto_tree_add_uint(tree, hf_ulmap_uiuc11_len, tvb, NIBHI(nibble, 2), len);
nibble += 2;
*/
len = 4 + BYTE_TO_NIB(len); /* length in nibbles */
/* data table 290c 8.4.5.4.4.2 */
switch (ext2_uiuc) {
case 0x00:
/* 8.4.5.4.16 CQICH_Enhanced_Allocation_IE */
nibble = CQICH_Enhance?? 快捷鍵說明
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