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adjust spp for whole number per subframe

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This commit is contained in:
S. Sandeep Kumar
2016-07-06 03:02:53 +05:30
parent c32304afbf
commit 622f917351
1 changed files with 6 additions and 10 deletions
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targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.c
+6 -10
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@@ -83,7 +83,7 @@ int trx_eth_start(openair0_device *device) {
if(eth_get_dev_conf_raw_IF4(device)!=0) return -1;
}
/* adjust MTU wrt number of samples per packet */
if(ethernet_tune (device,MTU_SIZE,RAW_PACKET_SIZE_BYTES(device->openair0_cfg->samples_per_packet))!=0) return -1;
if(ethernet_tune (device,MTU_SIZE,RAW_IF4_PRACH_SIZE_BYTES)!=0) return -1;
} else if (eth->flags == ETH_UDP_IF4_MODE) {
@@ -107,8 +107,6 @@ int trx_eth_start(openair0_device *device) {
} else {
if(eth_get_dev_conf_udp(device)!=0) return -1;
}
/* adjust MTU wrt number of samples per packet */
//if(ethernet_tune (device,MTU_SIZE,UDP_PACKET_SIZE_BYTES(device->openair0_cfg->samples_per_packet))!=0) return -1;
}
/* apply additional configuration */
if(ethernet_tune (device, SND_BUF_SIZE,2000000000)!=0) return -1;
@@ -386,8 +384,6 @@ int transport_init(openair0_device *device, openair0_config_t *openair0_cfg, eth
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].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;
@@ -397,19 +393,19 @@ int transport_init(openair0_device *device, openair0_config_t *openair0_cfg, eth
/*Note scheduling advance values valid only for case 7680000 */
switch ((int)openair0_cfg[0].sample_rate) {
case 30720000:
openair0_cfg[0].samples_per_packet = 4096;
openair0_cfg[0].samples_per_packet = 3840;
break;
case 23040000:
openair0_cfg[0].samples_per_packet = 2048;
openair0_cfg[0].samples_per_packet = 2880;
break;
case 15360000:
openair0_cfg[0].samples_per_packet = 2048;
openair0_cfg[0].samples_per_packet = 1920;
break;
case 7680000:
openair0_cfg[0].samples_per_packet = 1024;
openair0_cfg[0].samples_per_packet = 960;
break;
case 1920000:
openair0_cfg[0].samples_per_packet = 256;
openair0_cfg[0].samples_per_packet = 240;
break;
default:
printf("Error: unknown sampling rate %f\n",openair0_cfg[0].sample_rate);