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handling low level eth function for read

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This commit is contained in:
Sandeep Kumar
2016-06-21 17:08:27 +02:00
parent 12385fbd64
commit d43b8a3041
4 changed files with 66 additions and 44 deletions
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targets/ARCH/ETHERNET/USERSPACE/LIB/eth_raw.c
+53 -35
View File
@@ -52,6 +52,7 @@
#include "common_lib.h"
#include "ethernet_lib.h"
#include "if_defs.h"
#include "openair1/PHY/LTE_TRANSPORT/if4_tools.h"
#define DEBUG 0
@@ -214,7 +215,7 @@ int trx_eth_write_raw_IF4(openair0_device *device, openair0_timestamp timestamp,
} else if (flags == IF4_PULFFT) {
packet_size = RAW_IF4_PULFFT_SIZE_BYTES(nblocks);
} else {
packet_size = RAW_IF4_PRACH_SIZE_BYTES(nblocks);
packet_size = RAW_IF4_PRACH_SIZE_BYTES;
}
eth->tx_nsamps = nblocks;
@@ -302,49 +303,66 @@ int trx_eth_read_raw(openair0_device *device, openair0_timestamp *timestamp, voi
int trx_eth_read_raw_IF4(openair0_device *device, openair0_timestamp *timestamp, void **buff, int nsamps, int cc) {
int nblocks = nsamps;
int bytes_received=0;
int i=0;
eth_state_t *eth = (eth_state_t*)device->priv;
int Mod_id = device->Mod_id;
int rcvfrom_flag =0;
eth->rx_nsamps=nsamps;
/* buff[i] points to the position in rx buffer where the payload to be received will be placed
buff2 points to the position in rx buffer where the packet header will be placed */
void *buff2 = (void*)(buff[i]-APP_HEADER_SIZE_BYTES-MAC_HEADER_SIZE_BYTES);
/* we don't want to ovewrite with the header info the previous rx buffer data so we store it*/
struct ether_header temp = *(struct ether_header *)buff2;
int32_t temp0 = *(int32_t *)(buff2 + MAC_HEADER_SIZE_BYTES);
openair0_timestamp temp1 = *(openair0_timestamp *)(buff2 + MAC_HEADER_SIZE_BYTES + sizeof(int32_t));
bytes_received=0;
while(bytes_received < RAW_PACKET_SIZE_BYTES(nsamps)) {
bytes_received +=recv(eth->sockfd[Mod_id],
buff2,
RAW_PACKET_SIZE_BYTES(nsamps),
rcvfrom_flag);
ssize_t packet_size = MAC_HEADER_SIZE_BYTES + sizeof_IF4_dl_header_t;
void *test_buffer = (void*)malloc(packet_size);
void *rx_buffer=NULL;
IF4_dl_header_t *test_header = (IF4_dl_header_t*)(test_buffer + MAC_HEADER_SIZE_BYTES);
bytes_received = recv(eth->sockfd[Mod_id],
test_buffer,
packet_size,
0);
if (bytes_received ==-1) {
eth->num_rx_errors++;
perror("ETHERNET READ: ");
exit(-1);
} else {
/* store the timestamp value from packet's header */
*timestamp = *(openair0_timestamp *)(buff2 + MAC_HEADER_SIZE_BYTES + sizeof(int32_t));
eth->rx_actual_nsamps=bytes_received>>2;
eth->rx_count++;
}
}
/* tx buffer values restored */
*(struct ether_header *)buff2 = temp;
*(int32_t *)(buff2 + MAC_HEADER_SIZE_BYTES) = temp0;
*(openair0_timestamp *)(buff2 + MAC_HEADER_SIZE_BYTES + sizeof(int32_t)) = temp1;
}
*timestamp = test_header->sub_type;
if (test_header->sub_type == IF4_PDLFFT) {
buff[0] = (void*)malloc(RAW_IF4_PDLFFT_SIZE_BYTES(nblocks) - MAC_HEADER_SIZE_BYTES);
packet_size = RAW_IF4_PDLFFT_SIZE_BYTES(nblocks) - packet_size;
} else if (test_header->sub_type == IF4_PULFFT) {
buff[0] = (void*)malloc(RAW_IF4_PULFFT_SIZE_BYTES(nblocks) - MAC_HEADER_SIZE_BYTES);
packet_size = RAW_IF4_PULFFT_SIZE_BYTES(nblocks) - packet_size;
} else {
buff[0] = (void*)malloc(RAW_IF4_PRACH_SIZE_BYTES - MAC_HEADER_SIZE_BYTES);
packet_size = RAW_IF4_PRACH_SIZE_BYTES - packet_size;
}
return (bytes_received-APP_HEADER_SIZE_BYTES-MAC_HEADER_SIZE_BYTES)>>2;
memcpy(buff[0], test_header, sizeof_IF4_dl_header_t);
rx_buffer = (void*)(buff[0]+sizeof_IF4_dl_header_t);
bytes_received = 0;
while(bytes_received < packet_size) {
bytes_received += recv(eth->sockfd[Mod_id],
rx_buffer,
packet_size-bytes_received,
0);
if (bytes_received ==-1) {
eth->num_rx_errors++;
perror("ETHERNET READ: ");
exit(-1);
} else {
eth->rx_actual_nsamps = bytes_received>>1;
eth->rx_count++;
}
}
eth->rx_nsamps = nsamps;
free(test_buffer);
return (bytes_received-MAC_HEADER_SIZE_BYTES)>>1;
}
targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.c
+6 -5
View File
@@ -320,7 +320,8 @@ int transport_init(openair0_device *device, openair0_config_t *openair0_cfg, eth
} else if (eth_params->transp_preference == 2) {
eth->flags = ETH_UDP_IF4_MODE;
} else {
AssertFatal(0==4, "transport_init: Unknown transport preference %d", eth_params->transp_preference);
printf("transport_init: Unknown transport preference %d - default to RAW", eth_params->transp_preference);
eth->flags = ETH_RAW_MODE;
}
printf("[ETHERNET]: Initializing openair0_device for %s ...\n", ((device->host_type == BBU_HOST) ? "BBU": "RRH"));
@@ -346,16 +347,16 @@ int transport_init(openair0_device *device, openair0_config_t *openair0_cfg, eth
device->trx_write_func = trx_eth_write_raw_IF4;
device->trx_read_func = trx_eth_read_raw_IF4;
} else {
device->trx_write_func = trx_eth_write_udp_IF4;
device->trx_read_func = trx_eth_read_udp_IF4;
//device->trx_write_func = trx_eth_write_udp_IF4;
//device->trx_read_func = trx_eth_read_udp_IF4;
}
eth->if_name[device->Mod_id] = eth_params->local_if_name;
device->priv = eth;
/* device specific */
openair0_cfg[0].txlaunch_wait = 0;//manage when TX processing is triggered
openair0_cfg[0].txlaunch_wait_slotcount = 0; //manage when TX processing is triggered
//openair0_cfg[0].txlaunch_wait = 0;//manage when TX processing is triggered
//openair0_cfg[0].txlaunch_wait_slotcount = 0; //manage when TX processing is triggered
openair0_cfg[0].iq_rxrescale = 15;//rescale iqs
openair0_cfg[0].iq_txshift = eth_params->iq_txshift;// shift
openair0_cfg[0].tx_sample_advance = eth_params->tx_sample_advance;
targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.h
+2 -2
View File
@@ -222,8 +222,8 @@ int eth_set_dev_conf_udp(openair0_device *device);
int eth_socket_init_raw(openair0_device *device);
int trx_eth_write_raw(openair0_device *device, openair0_timestamp timestamp, void **buff, int nsamps,int cc, int flags);
int trx_eth_read_raw(openair0_device *device, openair0_timestamp *timestamp, void **buff, int nsamps, int cc);
//int trx_eth_write_raw_IF4(openair0_device *device, openair0_timestamp timestamp, void **buff, int nsamps,int cc, int flags);
//int trx_eth_read_raw_IF4(openair0_device *device, openair0_timestamp *timestamp, void **buff, int nsamps, int cc);
int trx_eth_write_raw_IF4(openair0_device *device, openair0_timestamp timestamp, void **buff, int nsamps,int cc, int flags);
int trx_eth_read_raw_IF4(openair0_device *device, openair0_timestamp *timestamp, void **buff, int nsamps, int cc);
int eth_get_dev_conf_raw(openair0_device *device);
int eth_set_dev_conf_raw(openair0_device *device);
targets/ARCH/ETHERNET/USERSPACE/LIB/if_defs.h
+5 -2
View File
@@ -39,6 +39,7 @@
*/
#include <netinet/ether.h>
#include <stdint.h>
// ETH transport preference modes
#define ETH_UDP_MODE 0
@@ -54,7 +55,9 @@
#define RAW_PACKET_SIZE_BYTES(nsamps) (APP_HEADER_SIZE_BYTES + MAC_HEADER_SIZE_BYTES + PAYLOAD_SIZE_BYTES(nsamps))
// Packet sizes for IF4 interface format
#define DATA_BLOCK_SIZE_BYTES(scaled_nblocks) (2*scaled_nblocks)
#define DATA_BLOCK_SIZE_BYTES(scaled_nblocks) (sizeof(int16_t)*scaled_nblocks)
#define PRACH_BLOCK_SIZE_BYTES (sizeof(int16_t)*839) // FIX hard coded prach size
#define RAW_IF4_PDLFFT_SIZE_BYTES(nblocks) (MAC_HEADER_SIZE_BYTES + sizeof_IF4_dl_header_t + DATA_BLOCK_SIZE_BYTES(nblocks))
#define RAW_IF4_PULFFT_SIZE_BYTES(nblocks) (MAC_HEADER_SIZE_BYTES + sizeof_IF4_ul_header_t + DATA_BLOCK_SIZE_BYTES(nblocks))
#define RAW_IF4_PRACH_SIZE_BYTES(nblocks) (MAC_HEADER_SIZE_BYTES + sizeof_IF4_prach_header_t + DATA_BLOCK_SIZE_BYTES(nblocks))
#define RAW_IF4_PRACH_SIZE_BYTES (MAC_HEADER_SIZE_BYTES + sizeof_IF4_prach_header_t + PRACH_BLOCK_SIZE_BYTES)