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[Qemu-devel] [6247] Add 'set_link' monitor command (Mark McLoughlin)
From: |
Anthony Liguori |
Subject: |
[Qemu-devel] [6247] Add 'set_link' monitor command (Mark McLoughlin) |
Date: |
Thu, 08 Jan 2009 19:44:06 +0000 |
Revision: 6247
http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=6247
Author: aliguori
Date: 2009-01-08 19:44:06 +0000 (Thu, 08 Jan 2009)
Log Message:
-----------
Add 'set_link' monitor command (Mark McLoughlin)
Add a monitor command to setting a given network device's link status
to 'up' or 'down'.
Allows simulation of network cable disconnect.
Signed-off-by: Mark McLoughlin <address@hidden>
Signed-off-by: Anthony Liguori <address@hidden>
Modified Paths:
--------------
trunk/monitor.c
trunk/net.c
trunk/net.h
Modified: trunk/monitor.c
===================================================================
--- trunk/monitor.c 2009-01-08 19:34:35 UTC (rev 6246)
+++ trunk/monitor.c 2009-01-08 19:44:06 UTC (rev 6247)
@@ -1516,6 +1516,7 @@
"value", "set maximum speed (in bytes) for migrations" },
{ "balloon", "i", do_balloon,
"target", "request VM to change it's memory allocation (in MB)" },
+ { "set_link", "ss", do_set_link, "name [up|down]" },
{ NULL, NULL, },
};
Modified: trunk/net.c
===================================================================
--- trunk/net.c 2009-01-08 19:34:35 UTC (rev 6246)
+++ trunk/net.c 2009-01-08 19:44:06 UTC (rev 6247)
@@ -387,12 +387,15 @@
VLANState *vlan = vc1->vlan;
VLANClientState *vc;
+ if (vc1->link_down)
+ return;
+
#ifdef DEBUG_NET
printf("vlan %d send:\n", vlan->id);
hex_dump(stdout, buf, size);
#endif
for(vc = vlan->first_client; vc != NULL; vc = vc->next) {
- if (vc != vc1) {
+ if (vc != vc1 && !vc->link_down) {
vc->fd_read(vc->opaque, buf, size);
}
}
@@ -1692,6 +1695,32 @@
}
}
+int do_set_link(const char *name, const char *up_or_down)
+{
+ VLANState *vlan;
+ VLANClientState *vc = NULL;
+
+ for (vlan = first_vlan; vlan != NULL; vlan = vlan->next)
+ for (vc = vlan->first_client; vc != NULL; vc = vc->next)
+ if (strcmp(vc->name, name) == 0)
+ break;
+
+ if (!vc) {
+ term_printf("could not find network device '%s'", name);
+ return 0;
+ }
+
+ if (strcmp(up_or_down, "up") == 0)
+ vc->link_down = 0;
+ else if (strcmp(up_or_down, "down") == 0)
+ vc->link_down = 1;
+ else
+ term_printf("invalid link status '%s'; only 'up' or 'down' valid\n",
+ up_or_down);
+
+ return 1;
+}
+
void net_cleanup(void)
{
VLANState *vlan;
Modified: trunk/net.h
===================================================================
--- trunk/net.h 2009-01-08 19:34:35 UTC (rev 6246)
+++ trunk/net.h 2009-01-08 19:44:06 UTC (rev 6247)
@@ -15,6 +15,7 @@
/* Packets may still be sent if this returns zero. It's used to
rate-limit the slirp code. */
IOCanRWHandler *fd_can_read;
+ int link_down;
void *opaque;
struct VLANClientState *next;
struct VLANState *vlan;
@@ -46,6 +47,7 @@
void qemu_handler_true(void *opaque);
void do_info_network(void);
+int do_set_link(const char *name, const char *up_or_down);
/* NIC info */
- [Qemu-devel] [6247] Add 'set_link' monitor command (Mark McLoughlin),
Anthony Liguori <=