Revision: 4341
http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=4341
Author: aurel32
Date: 2008-05-05 21:26:43 +0000 (Mon, 05 May 2008)
Log Message:
-----------
qemu: generate signals on tap I/O
Currently tap does not generate signals on I/O; this causes
network latency to be dependent on the timer tick (1ms without
dyntick, guest dependent with dyntick). By generating a signal
on I/O, we can inform the guest immediately that a packet has
arrived.
Signed-off-by: Aurelien Jarno <address@hidden>
Modified Paths:
--------------
trunk/vl.c
Modified: trunk/vl.c
===================================================================
--- trunk/vl.c 2008-05-05 21:26:31 UTC (rev 4340)
+++ trunk/vl.c 2008-05-05 21:26:43 UTC (rev 4341)
@@ -4030,6 +4030,7 @@
if (!s)
return NULL;
s->fd = fd;
+ enable_sigio_timer(fd);
s->vc = qemu_new_vlan_client(vlan, tap_receive, NULL, s);
qemu_set_fd_handler(s->fd, tap_send, NULL, s);
snprintf(s->vc->info_str, sizeof(s->vc->info_str), "tap: fd=%d", fd);