static void
update_sofar(struct perf *p)
{
struct timeval current;
ASSERT(!gettimeofday(¤t, NULL));
p->sofar += (double) tv_subtract(¤t, &p->start, 600) / 1000000.0;
tv_clear(&p->start);
}
static int
multi_tcp_wait_lite(struct multi_context *m, struct multi_instance *mi, const int action, bool *tun_input_pending)
{
struct context *c = multi_tcp_context(m, mi);
unsigned int looking_for = 0;
dmsg(D_MULTI_DEBUG, "MULTI TCP: multi_tcp_wait_lite a=%s mi=" ptr_format,
pract(action),
(ptr_type)mi);
tv_clear(&c->c2.timeval); /* ZERO-TIMEOUT */
switch (action)
{
case TA_TUN_READ:
looking_for = TUN_READ;
tun_input_pending = NULL;
io_wait(c, IOW_READ_TUN);
break;
case TA_SOCKET_READ:
looking_for = SOCKET_READ;
tun_input_pending = NULL;
io_wait(c, IOW_READ_LINK);
break;
case TA_TUN_WRITE:
looking_for = TUN_WRITE;
tun_input_pending = NULL;
c->c2.timeval.tv_sec = 1; /* For some reason, the Linux 2.2 TUN/TAP driver hits this timeout */
perf_push(PERF_PROC_OUT_TUN_MTCP);
io_wait(c, IOW_TO_TUN);
perf_pop();
break;
case TA_SOCKET_WRITE:
looking_for = SOCKET_WRITE;
io_wait(c, IOW_TO_LINK|IOW_READ_TUN_FORCE);
break;
default:
msg(M_FATAL, "MULTI TCP: multi_tcp_wait_lite, unhandled action=%d", action);
}
if (tun_input_pending && (c->c2.event_set_status & TUN_READ))
{
*tun_input_pending = true;
}
if (c->c2.event_set_status & looking_for)
{
return action;
}
else
{
switch (action)
{
/* TCP socket output buffer is full */
case TA_SOCKET_WRITE:
return TA_SOCKET_WRITE_DEFERRED;
/* TUN device timed out on accepting write */
case TA_TUN_WRITE:
return TA_TUN_WRITE_TIMEOUT;
}
return TA_UNDEF;
}
}
