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URL https://opencores.org/ocsvn/fade_ether_protocol/fade_ether_protocol/trunk

Subversion Repositories fade_ether_protocol

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    /fade_ether_protocol/trunk
    from Rev 38 to Rev 39
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Rev 38 → Rev 39

/experimental_jumbo_frames_version/linux/receiver2t4.c
0,0 → 1,236
/*
* fpga_l3_fade - driver for L3 communication protocol with FPGA based system
* Copyright (C) 2012 by Wojciech M. Zabolotny
* Institute of Electronic Systems, Warsaw University of Technology
*
* This code is PUBLIC DOMAIN
*/
 
#include<termios.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <poll.h>
#include <unistd.h>
#include <stdio.h>
#include <strings.h>
#include <stdlib.h>
#include <stdint.h>
#include <endian.h>
#include <sys/socket.h>
#include <linux/serial.h>
#include <sched.h>
#include "fpga_l3_fade.h"
#include <sys/time.h>
#include <pthread.h>
 
//Define number of slaves
#define N_S (4)
int frs[N_S]={-1,-1,-1,-1};
int active[N_S]={0,0,0,0};
int leave[N_S]={0,0,0,0};
pthread_t ucmd_thread;
double tend=0.0;
#define nic0 "enp130s0f0"
#define nic1 "enp130s0f1"
#define nic2 "enp132s0f0"
#define nic3 "enp132s0f1"
void * user_cmd_thread(void * a1)
{
uint16_t cmd;
int i;
int res;
struct timeval tv;
double tstart=0.0;
sleep(2);
for(i=0;i<N_S;i++) {
if(active[i]) {
res = ioctl(frs[i],L3_V1_IOC_STARTMAC,NULL);
printf("Result of startmac for slave %d : %d\n",i,res);
}
}
gettimeofday(&tv, NULL);
tstart=tv.tv_sec+1.0e-6*tv.tv_usec;
//Send three commands to each slave
//Waiting 10 seconds
for(cmd=0x112; cmd<=0x114; cmd++) {
sleep(10);
//Send user command
for(i=0;i<N_S;i++) {
if(active[i]) {
int j;
struct l3_v1_usercmd uc;
uc.cmd=cmd;
uc.arg=0x56789abc;
uc.timeout=2;
uc.nr_of_retries=20;
res = ioctl(frs[i],L3_V1_IOC_USERCMD,&uc);
printf("Result of usercmd for slave %d : %d\n",i,res);
for(j=0;j<12;j++) {
printf("%2.2x",(int)(uc.resp[j]));
}
printf("\n");
}
}
}
//Wait for 500 seconds
sleep(100);
//sleep(100);
for(i=0;i<N_S;i++) {
if(active[i]) {
res = ioctl(frs[i],L3_V1_IOC_STOPMAC,NULL);
printf("Result of usercmd for slave %d : %d\n",i,res);
}
}
gettimeofday(&tv, NULL);
tend=tv.tv_sec+1.0e-6*tv.tv_usec;
tend=tend-tstart;
}
void main(int argc, char * argv[])
{
struct l3_v1_buf_pointers bp;
struct l3_v1_slave sl[N_S] = {
{
.mac = {0xde, 0xad, 0xfa, 0xde, 0x05,0xe2},
.devname = nic1
},
{
.mac = {0xde, 0xad, 0xfa, 0xde, 0x04,0xe2},
.devname = nic0
}, //OK
{
.mac = {0xde, 0xad, 0xfa, 0xde, 0x07,0xe2},
.devname = nic3
},
{
.mac = {0xde, 0xad, 0xfa, 0xde, 0x06,0xe2},
.devname = nic2
}
};
int i,j;
int res;
int blen[N_S];
uint64_t data[N_S] = {0,0,0,0};
long long total_len[N_S]={0,0,0,0};
unsigned char * v[N_S];
int stop;
struct sched_param s;
s.sched_priority = 90;
//Read active channels
for(i=1;i<argc;i++) {
int n = atoi(argv[i]);
if ((n>=0) && (n<N_S))
active[n]=1;
}
printf("sched=%d\n",sched_setscheduler(0,SCHED_RR,&s));
//Prepare all slaves to work
for(i=0;i<N_S;i++) {
char devname[30];
sprintf(devname,"/dev/l3_fpga%d",i);
frs[i]=open(devname,O_RDONLY);
if(frs[i]<0) {
printf("I can't open device %s\b",devname);
perror("");
exit(1);
}
//Get the length of the buffer
blen[i] = ioctl(frs[i],L3_V1_IOC_GETBUFLEN,NULL);
//Set the wakeup threshold
res=ioctl(frs[i],L3_V1_IOC_SETWAKEUP,20000000);
printf("length of buffer: %d, result of set wakeup: %d\n",blen[i],res);
v[i]=(unsigned char *)mmap(0,blen[i],PROT_READ,MAP_PRIVATE,frs[i],0);
if(!v[i]) {
printf("mmap for device %s failed\n",devname);
exit(1);
}
}
//Connect to appropriate FPGAs
for(i=0;i<N_S;i++) {
if(active[i]) {
res = ioctl(frs[i],L3_V1_IOC_GETMAC,&sl[i]);
printf("Result of get for slave %d : %d\n",i,res);
if(res<0) {
printf("I couldn't bind Ethernet device %s\n",sl[i].devname);
exit(1);
}
} else {
leave[i]=1;
}
}
//Send FADE reset command, so that FADE core is in predictable state
for(i=0;i<N_S;i++) {
if(active[i]) {
int j;
for(j=0;j<3;j++) {
//Do it three times in case if one packet gets lost...
res = ioctl(frs[i],L3_V1_IOC_RESETMAC,&sl[i]);
if(res<0) {
printf("I couldn't RESET Ethernet device %d\n",i);
exit(1);
}
}
} else {
leave[i]=1;
}
}
//Start the second thread, which uses user commands
pthread_create(&ucmd_thread, NULL, user_cmd_thread, NULL);
int first_served=0;
do{
struct pollfd pfd[N_S];
int ptr=0;
int len=0;
int pres;
for(i=0;i<N_S;i++) {
pfd[i].fd = active[i] ? frs[i] : -1;
pfd[i].events = POLLIN;
pfd[i].revents = 0;
}
//Wait for data using "poll"
pres = poll(pfd,N_S,1000);
if(pres<0) {
perror("Error in poll:");
exit(1);
}
first_served = (first_served+1) % N_S; //Rotate priority of slaves
for(j=0;j<N_S;j++) {
i=(j+first_served) % N_S;
if(pfd[i].revents) {
int ofs=0;
len = ioctl(frs[i],L3_V1_IOC_READPTRS,&bp);
if(bp.eof) leave[i]=1;
//OK. The data are read, let's analyze them
while (bp.head != bp.tail) {
uint64_t c;
c = be64toh(*(uint64_t *)(v[i]+bp.tail));
bp.tail=(bp.tail+8) & (blen[i]-1); //Adjust tail pointer modulo blen[i]
if (__builtin_expect((c != data[i]), 0)) {
printf("Error! received: %llx expected: %llx position: %8.8x\n",c,data[i],total_len[i]+ofs);
exit(1);
}
data[i] += 0x1234567809abcdefL;
ofs++;
}
total_len[i] += len;
//printf("i=%d len=%d total=%lld head:%d tail: %d revents=%d eof=%d\n",i,len,total_len[i],bp.head, bp.tail,pfd[i].revents,(int)bp.eof);
ioctl(frs[i],L3_V1_IOC_WRITEPTRS,len);
}
}
fflush(stdout);
} while ((leave[0] && leave[1] && leave[2] && leave[3]) == 0); //Should depend on N_S!
pthread_join(ucmd_thread, NULL);
for(i=0;i<N_S;i++) {
if(active[i]) {
res = ioctl(frs[i],L3_V1_IOC_FREEMAC,0);
}
munmap(v[i],blen[i]);
close(frs[i]);
}
fprintf(stderr,"act0:%d act1:%d act2:%d act3:%d \n",active[0],active[1],active[2], active[3]);
for(i=0;i<N_S;i++) {
fprintf(stderr,"total data %d=%lld time=%g throughput=%g [Mb/s]\n",i,total_len[i], tend, total_len[i]/tend*8.0);
}
}

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