int main(void)
{
int fd, _read = 0;
void *a;
char c, buf[PRINT_CHUNK_SZ];
fd = open(PROC_FILE, O_RDWR);
if (fd < 0) {
perror("open");
exit(-1);
}
trans_ioctl_set_channel(fd, COS_TRANS_SERVICE_PONG);
trans_ioctl_set_direction(fd, COS_TRANS_DIR_LTOC);
a = mmap(NULL, MAP_SIZE, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
if (MAP_FAILED == a) {
perror("mmap");
exit(-1);
}
cringbuf_init(&sharedbuf, a, MAP_SIZE);
/* wait for user to start */
_read = read(0, buf, PRINT_CHUNK_SZ);
assert(_read >= 0);
while (1) {
int off = 0;
unsigned long long *p;
//_read = read(0, buf, PRINT_CHUNK_SZ);
_read = 8;
p = (unsigned long long *)buf;
rdtscll(*p);
do {
int p;
p = cringbuf_produce(&sharedbuf, buf + off, _read);
_read -= p;
off += p;
if (p) {
write(fd, &c, 1);
}
} while (_read);
}
if (munmap(a, MAP_SIZE) < 0) {
perror("munmap");
exit(-1);
}
return 0;
}
int main(void)
{
int fd;
void *a;
char c, buf[PRINT_CHUNK_SZ];
fd = open(PROC_FILE, O_RDWR);
if (fd < 0) {
perror("open");
exit(-1);
}
trans_ioctl_set_channel(fd, 0);
a = mmap(NULL, MAP_SIZE, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
if (MAP_FAILED == a) {
perror("mmap");
exit(-1);
}
cringbuf_init(&sharedbuf, a, MAP_SIZE);
while (1) {
int amnt;
/* wait for an event... */
read(fd, &c, 1);
do {
amnt = cringbuf_consume(&sharedbuf, buf, PRINT_CHUNK_SZ);
write(1 , buf, amnt); /* write to stdout */
} while (amnt);
}
if (munmap(a, MAP_SIZE) < 0) {
perror("munmap");
exit(-1);
}
/* if (write(fd, name, strlen(name)) < 0) { */
/* perror("read"); */
/* exit(-1); */
/* } */
return 0;
}
void *
recv_pkt(void *data)
{
char **arguments = (char**) data;
int msg_size = atoi(arguments[1]), sleep_var = atoi(arguments[2]);
int fdr, ret;
char buf[] = "ifconfig "IFNAME" inet "IPADDR" netmask 255.255.255.255 pointopoint "P2PPEER;
struct ifreq ifr;
int fd_low, fd_high, _read = 0;
void *a, *b;
char c, buf1[PRINT_CHUNK_SZ];
printf("Message size is (%d)\n", msg_size);
memset(buf1, 'b', PRINT_CHUNK_SZ);
// open the tun device
if((fdr = open("/dev/net/tun", O_RDWR)) < 0) {
perror("open /dev/net/tun: ");
exit(-1);
}
printf("tun FD (%d) created\n", fdr);
memset(&ifr, 0, sizeof(ifr));
ifr.ifr_flags = IFF_TUN | IFF_NO_PI;
if(ioctl(fdr, TUNSETIFF, (void *) &ifr) < 0) {
perror("ioctl TUNSETIFF: ");
close(fdr);
exit(-1);
}
printf("Running: %s\n", buf);
if(system(buf) < 0) {
perror("setting tun ipaddress: ");
exit(-1);
}
printf("Done setting TUN. \n");
fd_low = open(PROC_FILE, O_RDWR);
fd_high = open(PROC_FILE, O_RDWR);
if (fd_low < 0 || fd_high < 0) {
perror("open");
exit(-1);
}
printf("LO %d HI %d\n", COS_TRANS_SERVICE_LO, COS_TRANS_SERVICE_HI);
trans_ioctl_set_channel(fd_low, COS_TRANS_SERVICE_LO);
trans_ioctl_set_channel(fd_high, COS_TRANS_SERVICE_HI);
trans_ioctl_set_direction(fd_low, COS_TRANS_DIR_LTOC);
trans_ioctl_set_direction(fd_high, COS_TRANS_DIR_LTOC);
a = mmap(NULL, MAP_SIZE, PROT_READ|PROT_WRITE, MAP_SHARED, fd_low, 0);
b = mmap(NULL, MAP_SIZE, PROT_READ|PROT_WRITE, MAP_SHARED, fd_high, 0);
if (MAP_FAILED == a || MAP_FAILED == b) {
perror("mmap");
exit(-1);
}
cringbuf_init(&sharedbuf, a, MAP_SIZE);
cringbuf_init(&sharedbuf, b, MAP_SIZE);
char portstr[7];
int portnum;
portstr[6] = '\0';
printf("going to sleep for a few seconds; hurry and activate composite!\n");
sleep(sleep_var);
int wl, wh;
do {
int amread = 0;
ret = read(fdr, buf1, msg_size);
amread += snprintf(portstr, 7, "%#x", buf1[22] & 0xff);
if((buf1[23] & 0xff) < 16)
portstr[amread++] = '0';
amread += snprintf(portstr+amread, 7, "%x", buf1[23] & 0xff);
portnum = strtol(portstr, NULL, 16);
switch(portnum) {
case HIPRIOPORT:
wh = write(fd_high, &c, 1);
if(wh)
printf("hi prior\n");
hi++;
break;
case LOPRIOPORT:
// if(unlikely(lo < MAXIPI)) {
wl = write(fd_low, &c, 1);
if(wl)
printf("lo prio\n");
//lo++;
//ipis++;
//}
break;
default:
break;
}
} while(1);
close(fdr);
if (munmap(a, MAP_SIZE) < 0) {
perror("munmap");
exit(-1);
}
pthread_exit(NULL);
}