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082dff13cf7b8d66fadd23dad39e2923aee7d9e1
openairinterface5g/targets/RT/USER/rrh_gw.c
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navid 082dff13cf * add RF interface to the rrh gateway 
* update the openair0_init for all targets
* add a tuning function for the ethernet



git-svn-id: http://svn.eurecom.fr/openair4G/trunk@7830 818b1a75-f10b-46b9-bf7c-635c3b92a50f
2015-09-21 16:52:13 +00:00

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/*******************************************************************************
OpenAirInterface
Copyright(c) 1999 - 2014 Eurecom
OpenAirInterface is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenAirInterface is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with OpenAirInterface.The full GNU General Public License is
included in this distribution in the file called "COPYING". If not,
see <http://www.gnu.org/licenses/>.
Contact Information
OpenAirInterface Admin: openair_admin@eurecom.fr
OpenAirInterface Tech : openair_tech@eurecom.fr
OpenAirInterface Dev : openair4g-devel@eurecom.fr
Address : Eurecom, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE
*******************************************************************************/
/*! \file rrh_gw.h
* \brief top-level for the remote radio head gateway (RRH_gw) module reusing the ethernet library
* \author Navid Nikaein, Katerina Trilyraki, Raymond Knopp
* \date 2015
* \version 0.1
* \company Eurecom
* \maintainer: navid.nikaein@eurecom.fr
* \note
* \warning very experimental
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <execinfo.h>
#include <unistd.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <net/if.h>
#include <time.h>
#include "common_lib.h"
#include "rrh_gw.h" // change to rrh_new.h, put externs in rrh_extern.h
#include "rt_wrapper.h"
#include "rrh_gw_externs.h" // change to rrh_new.h, put externs in rrh_extern.h
#include "log_if.h"
#include "log_extern.h"
#include "vcd_signal_dumper.h"
/*****************************************************************************************
* ---------- *
* ------- RRH_BBU_IF ------- RRH_RF_IF -------USRP - COTS_UE- *
* - BBU - --------------- - RRH - ------------- -------BLADERF ---------- *
* ------- ------- -------EXMIMO *
* --------- *
* -------ETH_IF - EMU_UE- *
* --------- *
*****************************************************************************************/
char rrh_ip[20] = "192.168.12.242"; // there is code to detect the my ip address
int rrh_port = 50000; // has to be an option
/* log */
int16_t glog_level = LOG_DEBUG;
int16_t glog_verbosity = LOG_MED;
int16_t rrh_log_level = LOG_INFO;
int16_t rrh_log_verbosity = LOG_MED;
int16_t enb_log_level = LOG_INFO;
int16_t enb_log_verbosity = LOG_MED;
int16_t ue_log_level = LOG_INFO;
int16_t ue_log_verbosity = LOG_MED;
/* flags definitions */
uint8_t eNB_flag=0;
uint8_t UE_flag=0;
uint8_t EXMIMO_flag=0;
uint8_t USRP_flag=0;
uint8_t RT_flag=0, NRT_flag=1;
uint8_t rrh_exit=0;
uint8_t loopback_flag=0;
uint8_t measurements_flag=0;
/* Default operation as RRH:
- there are neither eNB nor UE modules
- no RF hardware is specified (NONE_IF)
- default ethernet interface is local */
uint8_t num_eNB_mod=0;
uint8_t num_UE_mod=0;
uint8_t num_EXMIMO_mod=0;
uint8_t num_USRP_mod=0;
uint8_t hardware_target=NONE_IF;
char* if_name="lo";
rrh_module_t *enb_array;
rrh_module_t *ue_array;
openair0_vtimestamp hw_counter=0;
static void debug_init(void);
static void get_options(int argc, char *argv[]);
static void print_help(void);
/*!\fn static rrh_module_t new_module(unsigned int id);
* \brief creation of a eNB/UE module
* \param[in] module id
* \return module
* \note
* @ingroup _oai
*/
static rrh_module_t new_module(unsigned int id);
/*!\fn static int get_ip_address(char* if_name)
* \brief retrieves IP address from the specified network interface
* \param[in] name of network interface
* \return 0
* \note
* @ingroup _oai
*/
static int get_ip_address(char* if_name);
int main(int argc, char **argv) {
unsigned int i;
/* parse input arguments */
get_options(argc, argv);
/* initialize logger and signal analyzer */
debug_init();
/* */
set_latency_target();
/* make a graceful exit when ctrl-c is pressed */
signal(SIGSEGV, signal_handler);
signal(SIGINT, signal_handler);
/* create modules based on input arguments */
if (eNB_flag==1){
enb_array=(rrh_module_t*)malloc(num_eNB_mod*sizeof(rrh_module_t));
for(i=0;i<num_eNB_mod;i++){
enb_array[i]=new_module(i);//enb_array[i]=new_module(i, get_RF_interfaces(&hardware_target));
config_BBU_mod(&enb_array[i],RT_flag,NRT_flag);
LOG_I(RRH,"[eNB %d] module(s) created (out of %u) \n",i,num_eNB_mod);
}
}
if (UE_flag==1){
ue_array=(rrh_module_t*)malloc(num_UE_mod*sizeof(rrh_module_t));
for(i=0;i<num_UE_mod;i++){
ue_array[i]=new_module(i);
config_UE_mod(&ue_array[i],RT_flag,NRT_flag);
LOG_I(RRH,"[UE %d] module(s) created (out of %u)\n",i, num_UE_mod);
}
}
printf("TYPE <CTRL-C> TO TERMINATE\n");
while (rrh_exit==0)
sleep(1);
return EXIT_SUCCESS;
}
static rrh_module_t new_module (unsigned int id) {
rrh_module_t rrh_mod;
openair0_config_t openair0_cfg;
rrh_mod.id=id;
rrh_mod.loopback=loopback_flag;
rrh_mod.measurements=measurements_flag;
/* each module is associated with an ethernet device */
rrh_mod.eth_dev.type=ETH_IF;
/* ethernet device is functioning within RRH */
rrh_mod.eth_dev.func_type=RRH_FUNC;
/* specify IP address */
get_ip_address(if_name);
openair0_cfg.my_ip=&rrh_ip[0];
openair0_cfg.my_port=rrh_port;
/* ethernet device initialization */
if (openair0_dev_init_eth(&rrh_mod.eth_dev, &openair0_cfg)<0){
LOG_E(RRH,"Exiting, cannot initialize ethernet interface.\n");
exit(-1);
}
/* allocate space and specify associated RF device */
openair0_device *oai_dv = (openair0_device *)malloc(sizeof(openair0_device));
memset(oai_dv,0, sizeof(openair0_device));
#ifdef EXMIMO
rrh_mod.devs=oai_dv;
rrh_mod.devs->type=EXMIMO_IF;
LOG_I(RRH,"Setting RF device to EXMIMO\n");
#elif OAI_USRP
rrh_mod.devs=oai_dv;
rrh_mod.devs->type=USRP_IF;
LOG_I(RRH,"Setting RF device to USRP\n");
#elif OAI_BLADERF
rrh_mod.devs=oai_dv;
rrh_mod.devs->type=BLADERF_IF;
LOG_I(RRH,"Setting RF device to BLADERF\n");
#else
rrh_mod.devs=oai_dv;
rrh_mod.devs->type=NONE_IF;
LOG_I(RRH,"Setting RF interface to NONE_IF... \n");
#endif
return rrh_mod;
}
static void debug_init(void) {
// log initialization
logInit();
set_glog(glog_level, glog_verbosity);
set_comp_log(RRH, rrh_log_level, rrh_log_verbosity, 1);
//set_comp_log(ENB_LOG, enb_log_level, enb_log_verbosity, 1);
//set_comp_log(UE_LOG, ue_log_level, ue_log_verbosity, 1);
// vcd initialization
if (ouput_vcd) {
vcd_signal_dumper_init("/tmp/openair_dump_rrh.vcd");
}
}
static void get_options(int argc, char *argv[]) {
int opt;
while ((opt = getopt(argc, argv, "xvhlte:n:u:g:r:w:i:")) != -1) {
switch (opt) {
case 'n':
eNB_flag=1;
num_eNB_mod=atoi(optarg);
break;
case 'u':
UE_flag=1;
num_UE_mod=atoi(optarg);
break;
case 'g':
glog_level=atoi(optarg);
break;
case 'i':
if (optarg) {
if_name=strdup(optarg);
printf("RRH interface name is set to %s\n", if_name);
}
break;
case 'r':
//rrh_log_level=atoi(optarg);
break;
case 'e':
//enb_log_level=atoi(optarg);
break;
case 'x':
rt_period = DEFAULT_PERIOD_NS;
RT_flag=1;
NRT_flag=0;
break;
case 'v':
/* extern from vcd */
ouput_vcd=1;
break;
case 'l':
/*In loopback mode rrh sends back to bbu what it receives*/
loopback_flag=1;
break;
case 't':
/*When measurements are enabled statistics related to TX/RX time are printed*/
measurements_flag=1;
break;
case 'w':
/* force to use this target*/
hardware_target=1;
break;
case 'h':
print_help();
exit(-1);
default: /* '?' */
//fprintf(stderr, "Usage: \n", argv[0]);
exit(-1);
}
}
}
static int get_ip_address(char* if_name) {
int fd;
struct ifreq ifr;
fd = socket(AF_INET, SOCK_DGRAM, 0);
/* I want to get an IPv4 IP address */
ifr.ifr_addr.sa_family = AF_INET;
/* I want IP address attached to "if_name" */
strncpy(ifr.ifr_name, if_name, IFNAMSIZ-1);
if ( ioctl(fd, SIOCGIFADDR, &ifr)<0 ) {
perror("IOCTL:");
exit(-1);
}
close(fd);
/* display result */
snprintf(&rrh_ip[0],20,"%s", inet_ntoa(((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr));
LOG_I(RRH,"Got IP address %s from interface %s\n", rrh_ip,if_name);
return 0;
}
static void print_help(void) {
puts("Usage: \n");
puts(" sudo -E chrt 99 ./rrh -n1 -g6 -v -t");
puts("Options:\n");
puts("\t -n create eNB module\n");
puts("\t -u create UE module\n");
puts("\t -g define global log level\n");
puts("\t -i set the RRH interface (default lo)\n");
puts("\t -r define rrh log level\n");
puts("\t -e define eNB log level\n");
puts("\t -x enable real time bahaviour\n");
puts("\t -v enable vcd dump\n");
puts("\t -l enable loopback mode\n");
puts("\t -t enable measurements\n");
puts("\t -w force to use specified HW\n");
puts("\t -h display info\n");
}
void *timer_proc(void *arg) {
timer_t timerid;
struct itimerspec *timer= (struct itimerspec *)arg ; // the timer data structure
struct itimerspec *old_value;
#ifdef LOWLATENCY
struct sched_attr attr;
unsigned int flags = 0;
attr.size = sizeof(attr);
attr.sched_flags = 0;
attr.sched_nice = 0;
attr.sched_priority = 0;
attr.sched_policy = SCHED_DEADLINE;
attr.sched_runtime = (0.1 * 100) * 10000; //
attr.sched_deadline = rt_period-30000;//(0.1 * 100) * 10000;
attr.sched_period = rt_period;//(0.1 * 100) * 10000; // each TX/RX thread has, as a function of RT PERIOD ??
if (sched_setattr(0, &attr, flags) < 0 ) {
perror("[SCHED] timer thread: sched_setattr failed\n");
exit(-1);
}
#endif
if (timer_create (CLOCK_REALTIME, NULL, &timerid) == -1) {
fprintf (stderr, "couldn't create a timer\n");
perror (NULL);
exit (EXIT_FAILURE);
}
signal(SIGALRM, timer_signal_handler);
LOG_I(RRH,"Timer has started!\n");
timer_settime (timerid, 0, timer, old_value);
while (!rrh_exit) {
sleep(1);
}
timer_delete(timerid);
return (0);
}
void timer_signal_handler(int sig) {
if (sig == SIGALRM) {
pthread_mutex_lock(&timer_mutex);
hw_counter ++;
pthread_mutex_unlock(&timer_mutex);
VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_CNT, hw_counter);//USED ELSEWHERE
}
}
void signal_handler(int sig) {
void *array[10];
size_t size;
if (sig==SIGSEGV) {
// get void*'s for all entries on the stack
size = backtrace(array, 10);
// print out all the frames to stderr
fprintf(stderr, "Error: signal %d:\n", sig);
backtrace_symbols_fd(array, size, 2);
exit(-1);
} else {
printf("trying to exit gracefully...\n");
rrh_exit = 1;
}
}
void exit_fun(const char* s) {
if (s != NULL) {
printf("%s %s() Exiting RRH: %s\n",__FILE__, __FUNCTION__, s);
}
rrh_exit = 1;
exit (-1);
}
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