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Commit f2e183fb authored by Sandeep Kumar's avatar Sandeep Kumar
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handling changes in eth lower level functions

parent 9246b16c
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Showing with 85 additions and 56 deletions
openair1/PHY/LTE_TRANSPORT/if4_tools.c
View file @ f2e183fb
......@@ -44,38 +44,34 @@
#include "PHY/LTE_TRANSPORT/if4_tools.h"
#include "PHY/TOOLS/ALAW/alaw_lut.h"
// Get device information
void send_IF4(PHY_VARS_eNB *eNB, eNB_rxtx_proc_t *proc, uint16_t packet_type) {
// --- Careful to handle buffer memory --- RAW/UDP modes --- PRACH variables and data
void send_IF4(PHY_VARS_eNB *eNB, uint16_t packet_type) {
LTE_DL_FRAME_PARMS *fp = &eNB->frame_parms;
eNB_proc_t *proc = &eNB->proc;
int32_t **txdataF = eNB->common_vars.txdataF[0];
int32_t **rxdataF = eNB->common_vars.rxdataF[0];
IF4_dl_header_t *dl_header=NULL;
IF4_ul_header_t *ul_header=NULL;
IF4_prach_header_t *prach_header=NULL;
int16_t *prachF = eNB->prach_vars.prachF;
uint16_t symbol_id, element_id;
uint16_t db_halflength;
uint16_t db_fulllength, db_halflength;
int slotoffsetF, blockoffsetF;
void *tx_buffer=NULL;
int16_t *data_block=NULL;
// int16_t *txbuffer = (int16_t*)malloc(db_halflength*sizeof(int16_t));
if (packet_type == IF4_PDLFFT) {
dl_header = (IF4_dl_header_t*)malloc(sizeof_IF4_dl_header_t);
gen_IF4_dl_header(dl_header, proc);
db_halflength = (12*fp->N_RB_DL)>>1;
db_fulllength = 12*fp->N_RB_DL;
db_halflength = (db_fulllength)>>1;
slotoffsetF = (proc->subframe_tx)*(fp->ofdm_symbol_size)*((fp->Ncp==1) ? 12 : 14) + 1;
blockoffsetF = slotoffsetF + fp->ofdm_symbol_size - db_halflength;
printf("Problem here - db_half %d\n", db_halflength);
data_block = (int16_t*)malloc(db_halflength*sizeof(int16_t));
for (symbol_id=0; symbol_id<fp->symbols_per_tti; symbol_id++) {
printf("\n Send IF4 for frame %d, subframe %d and symbol %d\n", proc->frame_tx, proc->subframe_tx, symbol_id);
tx_buffer = malloc(/*SIZE_OF_MAC_BYTES +*/ sizeof_IF4_dl_header_t + db_fulllength*sizeof(int16_t));
IF4_dl_header_t *dl_header = (IF4_dl_header_t *)(tx_buffer /*+ MAC_HEADER_SIZE_BYTES*/);
data_block = (int16_t*)(tx_buffer /*+ MAC_HEADER_SIZE_BYTES*/ + sizeof_IF4_dl_header_t);
gen_IF4_dl_header(dl_header, proc);
for (symbol_id=0; symbol_id<fp->symbols_per_tti; symbol_id++) {
// Do compression of the two parts and generate data blocks
for (element_id=0; element_id<db_halflength; element_id++) {
data_block[element_id] = lin2alaw[ (txdataF[0][blockoffsetF+element_id] & 0xffff) + 32768 ];
......@@ -88,32 +84,32 @@ void send_IF4(PHY_VARS_eNB *eNB, eNB_rxtx_proc_t *proc, uint16_t packet_type) {
// Update information in generated packet
dl_header->frame_status.sym_num = symbol_id;
printf("\n Not even here !!\n");
// Write the packet(s) to the fronthaul
// Write the packet to the fronthaul
if ((eNB->ifdevice.trx_write_func(&eNB->ifdevice,
symbol_id,
&data_block,
1,
1,
0)) < 0) {
perror("ETHERNET write");
symbol_id,
tx_buffer,
db_fulllength,
1,
IF4_PDLFFT)) < 0) {
perror("ETHERNET write for IF4_PDLFFT\n");
}
slotoffsetF += fp->ofdm_symbol_size;
blockoffsetF += fp->ofdm_symbol_size;
}
} else if (packet_type == IF4_PULFFT) {
ul_header = (IF4_ul_header_t*)malloc(sizeof_IF4_ul_header_t);
gen_IF4_ul_header(ul_header, proc);
db_halflength = (12*fp->N_RB_UL)>>1;
db_fulllength = 12*fp->N_RB_UL;
db_halflength = (db_fulllength)>>1;
slotoffsetF = (proc->subframe_rx)*(fp->ofdm_symbol_size)*((fp->Ncp==1) ? 12 : 14) + 1;
blockoffsetF = slotoffsetF + fp->ofdm_symbol_size - db_halflength;
data_block = (int16_t*)malloc(db_halflength*sizeof(int16_t));
for (symbol_id=0; symbol_id<fp->symbols_per_tti; symbol_id++) {
tx_buffer = malloc(/*SIZE_OF_MAC_BYTES +*/ sizeof_IF4_dl_header_t + db_fulllength*sizeof(int16_t));
IF4_ul_header_t *ul_header = (IF4_ul_header_t *)(tx_buffer /*+ MAC_HEADER_SIZE_BYTES*/);
data_block = (int16_t*)(tx_buffer /*+ MAC_HEADER_SIZE_BYTES*/ + sizeof_IF4_ul_header_t);
gen_IF4_ul_header(ul_header, proc);
for (symbol_id=0; symbol_id<fp->symbols_per_tti; symbol_id++) {
// Do compression of the two parts and generate data blocks - rxdataF
for (element_id=0; element_id<db_halflength; element_id++) {
data_block[element_id] = lin2alaw[ (rxdataF[0][blockoffsetF+element_id] & 0xffff) + 32768 ];
......@@ -127,22 +123,55 @@ void send_IF4(PHY_VARS_eNB *eNB, eNB_rxtx_proc_t *proc, uint16_t packet_type) {
ul_header->frame_status.sym_num = symbol_id;
// Write the packet(s) to the fronthaul
if ((eNB->ifdevice.trx_write_func(&eNB->ifdevice,
symbol_id,
tx_buffer,
db_fulllength,
1,
IF4_PULFFT)) < 0) {
perror("ETHERNET write for IF4_PULFFT\n");
}
slotoffsetF += fp->ofdm_symbol_size;
blockoffsetF += fp->ofdm_symbol_size;
}
} else if (packet_type == IF4_PRACH) {
// FIX: hard coded prach samples length
db_fulllength = 839;
slotoffsetF = (proc->subframe_tx)*(fp->ofdm_symbol_size)*((fp->Ncp==1) ? 12 : 14) + 1;
tx_buffer = malloc(/*SIZE_OF_MAC_BYTES +*/ sizeof_IF4_prach_header_t + db_fulllength*sizeof(int16_t));
IF4_prach_header_t *prach_header = (IF4_prach_header_t *)(tx_buffer /*+ MAC_HEADER_SIZE_BYTES*/);
data_block = (int16_t*)(tx_buffer /*+ MAC_HEADER_SIZE_BYTES*/ + sizeof_IF4_prach_header_t);
gen_IF4_prach_header(prach_header, proc);
// Do compression and generate data blocks
for (element_id=0; element_id<db_fulllength; element_id++) {
data_block[element_id] = lin2alaw[ (prachF[blockoffsetF+element_id] & 0xffff) + 32768 ];
data_block[element_id] |= lin2alaw[ (prachF[blockoffsetF+element_id]>>16) + 32768 ]<<8;
}
// Write the packet to the fronthaul
if ((eNB->ifdevice.trx_write_func(&eNB->ifdevice,
symbol_id,
tx_buffer,
db_fulllength,
1,
IF4_PRACH)) < 0) {
perror("ETHERNET write for IF4_PRACH\n");
}
} else {
AssertFatal(1==0, "send_IF4 - Unknown packet_type %x", packet_type);
}
free(tx_buffer);
return;
}
void recv_IF4(PHY_VARS_eNB *eNB, eNB_rxtx_proc_t *proc, uint16_t *packet_type, uint32_t *symbol_number) {
void recv_IF4(PHY_VARS_eNB *eNB, uint16_t *packet_type, uint32_t *symbol_number) {
LTE_DL_FRAME_PARMS *fp = &eNB->frame_parms;
eNB_proc_t *proc = &eNB->proc;
int32_t **txdataF = eNB->common_vars.txdataF[0];
int32_t **rxdataF = eNB->common_vars.rxdataF[0];
......@@ -151,23 +180,22 @@ void recv_IF4(PHY_VARS_eNB *eNB, eNB_rxtx_proc_t *proc, uint16_t *packet_type, u
int slotoffsetF, blockoffsetF;
*packet_type = 0;
void *rxbuffer=NULL;
void *rx_buffer=NULL;
int16_t *data_block=NULL;
// Read packet(s) from the fronthaul
if (eNB->ifdevice.trx_read_func (&eNB->ifdevice,
if (eNB->ifdevice.trx_read_func(&eNB->ifdevice,
symbol_number,
rxbuffer,
fp->symbols_per_tti,
eNB->ifdevice.openair0_cfg->rx_num_channels
) < 0) {
rx_buffer,
0,
0) < 0) {
perror("ETHERNET read");
}
packet_type = (uint16_t*) (rxbuffer+2);
packet_type = (uint16_t*) (rx_buffer+2);
if (*packet_type == IF4_PDLFFT) {
data_block = (int16_t*) (rxbuffer+sizeof_IF4_dl_header_t);
data_block = (int16_t*) (rx_buffer+sizeof_IF4_dl_header_t);
db_halflength = (12*fp->N_RB_DL)>>1;
......@@ -190,7 +218,7 @@ void recv_IF4(PHY_VARS_eNB *eNB, eNB_rxtx_proc_t *proc, uint16_t *packet_type, u
*symbol_number = 0;
} else if (*packet_type == IF4_PULFFT) {
data_block = (int16_t*) (rxbuffer+sizeof_IF4_ul_header_t);
data_block = (int16_t*) (rx_buffer+sizeof_IF4_ul_header_t);
db_halflength = (12*fp->N_RB_UL)>>1;
......@@ -213,16 +241,17 @@ void recv_IF4(PHY_VARS_eNB *eNB, eNB_rxtx_proc_t *proc, uint16_t *packet_type, u
*symbol_number = 0;
} else if (*packet_type == IF4_PRACH) {
data_block = (int16_t*) (rxbuffer+sizeof_IF4_prach_header_t);
data_block = (int16_t*) (rx_buffer+sizeof_IF4_prach_header_t);
} else {
AssertFatal(1==0, "recv_IF4 - Unknown packet_type %x", *packet_type);
}
free(rx_buffer);
return;
}
void gen_IF4_dl_header(IF4_dl_header_t *dl_packet, eNB_rxtx_proc_t *proc) {
void gen_IF4_dl_header(IF4_dl_header_t *dl_packet, eNB_proc_t *proc) {
// Set Type and Sub-Type
dl_packet->type = IF4_PACKET_TYPE;
dl_packet->sub_type = IF4_PDLFFT;
......@@ -242,7 +271,7 @@ void gen_IF4_dl_header(IF4_dl_header_t *dl_packet, eNB_rxtx_proc_t *proc) {
}
void gen_IF4_ul_header(IF4_ul_header_t *ul_packet, eNB_rxtx_proc_t *proc) {
void gen_IF4_ul_header(IF4_ul_header_t *ul_packet, eNB_proc_t *proc) {
// Set Type and Sub-Type
ul_packet->type = IF4_PACKET_TYPE;
ul_packet->sub_type = IF4_PULFFT;
......@@ -266,7 +295,7 @@ void gen_IF4_ul_header(IF4_ul_header_t *ul_packet, eNB_rxtx_proc_t *proc) {
}
void gen_IF4_prach_header(IF4_prach_header_t *prach_packet, eNB_rxtx_proc_t *proc) {
void gen_IF4_prach_header(IF4_prach_header_t *prach_packet, eNB_proc_t *proc) {
// Set Type and Sub-Type
prach_packet->type = IF4_PACKET_TYPE;
prach_packet->sub_type = IF4_PRACH;
......
openair1/PHY/LTE_TRANSPORT/if4_tools.h
View file @ f2e183fb
......@@ -175,12 +175,12 @@ struct IF4_prach_header {
typedef struct IF4_prach_header IF4_prach_header_t;
#define sizeof_IF4_prach_header_t 12
void gen_IF4_dl_header(IF4_dl_header_t*, eNB_rxtx_proc_t*);
void gen_IF4_dl_header(IF4_dl_header_t*, eNB_proc_t*);
void gen_IF4_ul_header(IF4_ul_header_t*, eNB_rxtx_proc_t*);
void gen_IF4_ul_header(IF4_ul_header_t*, eNB_proc_t*);
void gen_IF4_prach_header(IF4_prach_header_t*, eNB_rxtx_proc_t*);
void gen_IF4_prach_header(IF4_prach_header_t*, eNB_proc_t*);
void send_IF4(PHY_VARS_eNB*, eNB_rxtx_proc_t*, uint16_t);
void send_IF4(PHY_VARS_eNB*, uint16_t);
void recv_IF4(PHY_VARS_eNB*, eNB_rxtx_proc_t*, uint16_t*, uint32_t*);
void recv_IF4(PHY_VARS_eNB*, uint16_t*, uint32_t*);
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