From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1LL0nY-0003LH-Jx for qemu-devel@nongnu.org; Thu, 08 Jan 2009 14:44:08 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1LL0nX-0003Kt-Uq for qemu-devel@nongnu.org; Thu, 08 Jan 2009 14:44:08 -0500 Received: from [199.232.76.173] (port=54875 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1LL0nX-0003Ki-M3 for qemu-devel@nongnu.org; Thu, 08 Jan 2009 14:44:07 -0500 Received: from savannah.gnu.org ([199.232.41.3]:59638 helo=sv.gnu.org) by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1LL0nX-0007FL-Bw for qemu-devel@nongnu.org; Thu, 08 Jan 2009 14:44:07 -0500 Received: from cvs.savannah.gnu.org ([199.232.41.69]) by sv.gnu.org with esmtp (Exim 4.63) (envelope-from ) id 1LL0nW-0007EF-PA for qemu-devel@nongnu.org; Thu, 08 Jan 2009 19:44:06 +0000 Received: from aliguori by cvs.savannah.gnu.org with local (Exim 4.63) (envelope-from ) id 1LL0nW-0007EB-Jp for qemu-devel@nongnu.org; Thu, 08 Jan 2009 19:44:06 +0000 MIME-Version: 1.0 Errors-To: aliguori Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Anthony Liguori Message-Id: Date: Thu, 08 Jan 2009 19:44:06 +0000 Subject: [Qemu-devel] [6247] Add 'set_link' monitor command (Mark McLoughlin) Reply-To: qemu-devel@nongnu.org List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org 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 Signed-off-by: Anthony Liguori 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 */