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starting to add if4 specific eth read, write

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This commit is contained in:
Sandeep Kumar
2016-06-20 18:36:17 +02:00
parent f2e183fb2b
commit a8def02fbf
3 changed files with 119 additions and 6 deletions
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targets/ARCH/ETHERNET/USERSPACE/LIB/eth_raw.c
+92 -2
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@@ -140,7 +140,7 @@ int trx_eth_write_raw(openair0_device *device, openair0_timestamp timestamp, voi
//sendto_flag|=flags;
eth->tx_nsamps=nsamps;
for (i=0;i<cc;i++) {
/* buff[i] points to the position in tx buffer where the payload to be sent is
buff2 points to the position in tx buffer where the packet header will be placed */
@@ -198,6 +198,48 @@ int trx_eth_write_raw(openair0_device *device, openair0_timestamp timestamp, voi
}
int trx_eth_write_raw_IF4(openair0_device *device, openair0_timestamp timestamp, void **buff, int nsamps, int cc, int flags) {
int nblocks = nsamps;
int bytes_sent = 0;
eth_state_t *eth = (eth_state_t*)device->priv;
int Mod_id = device->Mod_id;
ssize_t packet_size;
if (flags == IF4_PDLFFT) {
packet_size = RAW_IF4_PDLFFT_SIZE_BYTES(nblocks);
} else if (flags == IF4_PULFFT) {
packet_size = RAW_IF4_PULFFT_SIZE_BYTES(nblocks);
} else {
packet_size = RAW_IF4_PRACH_SIZE_BYTES(nblocks);
}
eth->tx_nsamps = nblocks;
memcpy(buff[0], (void*)&eh, MAC_HEADER_SIZE_BYTES);
bytes_sent = send(eth->sockfd[Mod_id],
buff[0],
packet_size,
0);
if (bytes_sent == -1) {
eth->num_tx_errors++;
perror("ETHERNET WRITE: ");
exit(-1);
} else {
eth->tx_actual_nsamps = bytes_sent>>1;
eth->tx_count++;
}
return (bytes_sent-MAC_HEADER_SIZE_BYTES);
}
int trx_eth_read_raw(openair0_device *device, openair0_timestamp *timestamp, void **buff, int nsamps, int cc) {
int bytes_received=0;
@@ -256,7 +298,55 @@ int trx_eth_read_raw(openair0_device *device, openair0_timestamp *timestamp, voi
return (bytes_received-APP_HEADER_SIZE_BYTES-MAC_HEADER_SIZE_BYTES)>>2;
}
int trx_eth_read_raw_IF4(openair0_device *device, openair0_timestamp *timestamp, void **buff, int nsamps, int cc) {
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);
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;
return (bytes_received-APP_HEADER_SIZE_BYTES-MAC_HEADER_SIZE_BYTES)>>2;
}
int eth_set_dev_conf_raw(openair0_device *device) {