libvirt/src/util/virnetdevopenvswitch.c

135 lines
4.5 KiB
C
Raw Normal View History

/*
* Copyright (C) 2012 Nicira, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Authors:
* Dan Wendlandt <dan@nicira.com>
* Kyle Mestery <kmestery@cisco.com>
* Ansis Atteka <aatteka@nicira.com>
*/
#include <config.h>
#include "virnetdevopenvswitch.h"
#include "command.h"
#include "memory.h"
#include "virterror_internal.h"
#include "virmacaddr.h"
#define VIR_FROM_THIS VIR_FROM_NONE
/**
* virNetDevOpenvswitchAddPort:
* @brname: the bridge name
* @ifname: the network interface name
* @macaddr: the mac address of the virtual interface
* @ovsport: the ovs specific fields
*
* Add an interface to the OVS bridge
*
* Returns 0 in case of success or -1 in case of failure.
*/
int virNetDevOpenvswitchAddPort(const char *brname, const char *ifname,
const unsigned char *macaddr,
virNetDevVPortProfilePtr ovsport)
{
int ret = -1;
virCommandPtr cmd = NULL;
char macaddrstr[VIR_MAC_STRING_BUFLEN];
char uuidstr[VIR_UUID_STRING_BUFLEN];
char *attachedmac_ex_id = NULL;
char *ifaceid_ex_id = NULL;
char *profile_ex_id = NULL;
virMacAddrFormat(macaddr, macaddrstr);
virUUIDFormat(ovsport->u.openvswitch.interfaceID, uuidstr);
if (virAsprintf(&attachedmac_ex_id, "external-ids:attached-mac=\"%s\"",
macaddrstr) < 0)
goto cleanup;
if (virAsprintf(&ifaceid_ex_id, "external-ids:iface-id=\"%s\"",
uuidstr) < 0)
goto cleanup;
if (ovsport->u.openvswitch.profileID[0] != '\0') {
if (virAsprintf(&profile_ex_id, "external-ids:port-profile=\"%s\"",
ovsport->u.openvswitch.profileID) < 0)
goto cleanup;
}
cmd = virCommandNew(OVSVSCTL);
if (ovsport->u.openvswitch.profileID[0] == '\0') {
virCommandAddArgList(cmd, "--", "--may-exist", "add-port",
brname, ifname,
"--", "set", "Interface", ifname, attachedmac_ex_id,
"--", "set", "Interface", ifname, ifaceid_ex_id,
"--", "set", "Interface", ifname,
"external-ids:iface-status=active",
NULL);
} else {
virCommandAddArgList(cmd, "--", "--may-exist", "add-port",
brname, ifname,
"--", "set", "Interface", ifname, attachedmac_ex_id,
"--", "set", "Interface", ifname, ifaceid_ex_id,
"--", "set", "Interface", ifname, profile_ex_id,
"--", "set", "Interface", ifname,
"external-ids:iface-status=active",
NULL);
}
if (virCommandRun(cmd, NULL) < 0) {
virReportSystemError(VIR_ERR_INTERNAL_ERROR,
_("Unable to add port %s to OVS bridge %s"),
ifname, brname);
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(attachedmac_ex_id);
VIR_FREE(ifaceid_ex_id);
VIR_FREE(profile_ex_id);
virCommandFree(cmd);
return ret;
}
/**
* virNetDevOpenvswitchRemovePort:
* @ifname: the network interface name
*
* Deletes an interface from a OVS bridge
*
* Returns 0 in case of success or -1 in case of failure.
*/
int virNetDevOpenvswitchRemovePort(const char *brname ATTRIBUTE_UNUSED, const char *ifname)
{
int ret = -1;
virCommandPtr cmd = NULL;
cmd = virCommandNew(OVSVSCTL);
virCommandAddArgList(cmd, "--", "--if-exists", "del-port", ifname, NULL);
if (virCommandRun(cmd, NULL) < 0) {
virReportSystemError(VIR_ERR_INTERNAL_ERROR,
_("Unable to delete port %s from OVS"), ifname);
goto cleanup;
}
ret = 0;
cleanup:
virCommandFree(cmd);
return ret;
}