/*
* Process an I/O event.
*/
static void
multi_process_io_udp (struct multi_context *m)
{
const unsigned int status = m->top.c2.event_set_status;
const unsigned int mpp_flags = m->top.c2.fast_io
? (MPP_CONDITIONAL_PRE_SELECT | MPP_CLOSE_ON_SIGNAL)
: (MPP_PRE_SELECT | MPP_CLOSE_ON_SIGNAL);
#ifdef MULTI_DEBUG_EVENT_LOOP
char buf[16];
buf[0] = 0;
if (status & SOCKET_READ)
strcat (buf, "SR/");
else if (status & SOCKET_WRITE)
strcat (buf, "SW/");
else if (status & TUN_READ)
strcat (buf, "TR/");
else if (status & TUN_WRITE)
strcat (buf, "TW/");
printf ("IO %s\n", buf);
#endif
#ifdef ENABLE_MANAGEMENT
if (status & (MANAGEMENT_READ|MANAGEMENT_WRITE))
{
ASSERT (management);
management_io (management);
}
#endif
/* UDP port ready to accept write */
if (status & SOCKET_WRITE)
{
multi_process_outgoing_link (m, mpp_flags);
}
/* TUN device ready to accept write */
else if (status & TUN_WRITE)
{
multi_process_outgoing_tun (m, mpp_flags);
}
/* Incoming data on UDP port */
else if (status & SOCKET_READ)
{
read_incoming_link (&m->top);
multi_release_io_lock (m);
if (!IS_SIG (&m->top))
multi_process_incoming_link (m, NULL, mpp_flags);
}
/* Incoming data on TUN device */
else if (status & TUN_READ)
{
read_incoming_tun (&m->top);
multi_release_io_lock (m);
if (!IS_SIG (&m->top))
multi_process_incoming_tun (m, mpp_flags);
}
}
static struct multi_instance *
multi_tcp_dispatch(struct multi_context *m, struct multi_instance *mi, const int action)
{
const unsigned int mpp_flags = MPP_PRE_SELECT|MPP_RECORD_TOUCH;
struct multi_instance *touched = mi;
m->mpp_touched = &touched;
dmsg(D_MULTI_DEBUG, "MULTI TCP: multi_tcp_dispatch a=%s mi=" ptr_format,
pract(action),
(ptr_type)mi);
switch (action)
{
case TA_TUN_READ:
read_incoming_tun(&m->top);
if (!IS_SIG(&m->top))
{
multi_process_incoming_tun(m, mpp_flags);
}
break;
case TA_SOCKET_READ:
case TA_SOCKET_READ_RESIDUAL:
ASSERT(mi);
ASSERT(mi->context.c2.link_socket);
set_prefix(mi);
read_incoming_link(&mi->context);
clear_prefix();
if (!IS_SIG(&mi->context))
{
multi_process_incoming_link(m, mi, mpp_flags);
if (!IS_SIG(&mi->context))
{
stream_buf_read_setup(mi->context.c2.link_socket);
}
}
break;
case TA_TIMEOUT:
multi_process_timeout(m, mpp_flags);
break;
case TA_TUN_WRITE:
multi_process_outgoing_tun(m, mpp_flags);
break;
case TA_TUN_WRITE_TIMEOUT:
multi_process_drop_outgoing_tun(m, mpp_flags);
break;
case TA_SOCKET_WRITE_READY:
ASSERT(mi);
multi_tcp_process_outgoing_link_ready(m, mi, mpp_flags);
break;
case TA_SOCKET_WRITE:
multi_tcp_process_outgoing_link(m, false, mpp_flags);
break;
case TA_SOCKET_WRITE_DEFERRED:
multi_tcp_process_outgoing_link(m, true, mpp_flags);
break;
case TA_INITIAL:
ASSERT(mi);
multi_tcp_set_global_rw_flags(m, mi);
multi_process_post(m, mi, mpp_flags);
break;
default:
msg(M_FATAL, "MULTI TCP: multi_tcp_dispatch, unhandled action=%d", action);
}
m->mpp_touched = NULL;
return touched;
}
