static void set_options(int rs)
{
int val;
if (buffer_size) {
rsetsockopt(rs, SOL_SOCKET, SO_SNDBUF, (void *) &buffer_size,
sizeof buffer_size);
rsetsockopt(rs, SOL_SOCKET, SO_RCVBUF, (void *) &buffer_size,
sizeof buffer_size);
} else {
val = 1 << 19;
rsetsockopt(rs, SOL_SOCKET, SO_SNDBUF, (void *) &val, sizeof val);
rsetsockopt(rs, SOL_SOCKET, SO_RCVBUF, (void *) &val, sizeof val);
}
val = 1;
rsetsockopt(rs, IPPROTO_TCP, TCP_NODELAY, (void *) &val, sizeof(val));
rsetsockopt(rs, SOL_RDMA, RDMA_IOMAPSIZE, (void *) &val, sizeof val);
if (flags & MSG_DONTWAIT)
rfcntl(rs, F_SETFL, O_NONBLOCK);
/* Inline size based on experimental data */
if (optimization == opt_latency) {
val = 384;
rsetsockopt(rs, SOL_RDMA, RDMA_INLINE, &val, sizeof val);
} else if (optimization == opt_bandwidth) {
val = 0;
rsetsockopt(rs, SOL_RDMA, RDMA_INLINE, &val, sizeof val);
}
}
int fcntl(int socket, int cmd, ... /* arg */)
{
va_list args;
long lparam;
void *pparam;
int fd, ret;
init_preload();
va_start(args, cmd);
switch (cmd) {
case F_GETFD:
case F_GETFL:
case F_GETOWN:
case F_GETSIG:
case F_GETLEASE:
ret = (fd_get(socket, &fd) == fd_rsocket) ?
rfcntl(fd, cmd) : real.fcntl(fd, cmd);
break;
case F_DUPFD:
/*case F_DUPFD_CLOEXEC:*/
case F_SETFD:
case F_SETFL:
case F_SETOWN:
case F_SETSIG:
case F_SETLEASE:
case F_NOTIFY:
lparam = va_arg(args, long);
ret = (fd_get(socket, &fd) == fd_rsocket) ?
rfcntl(fd, cmd, lparam) : real.fcntl(fd, cmd, lparam);
break;
default:
pparam = va_arg(args, void *);
ret = (fd_get(socket, &fd) == fd_rsocket) ?
rfcntl(fd, cmd, pparam) : real.fcntl(fd, cmd, pparam);
break;
}
va_end(args);
return ret;
}
