Add virNetworkGetBridgeName() so that we can look up what bridge
a Xen guest should connect to in order to join a given network.
Note, we need this so that we can lookup which bridge the guest's
backend interface should be enslaved to in order for the guest
to join a specific network.
Signed-off-by: Mark McLoughlin <markmc@xxxxxxxxxx>
Index: libvirt-foo/include/libvirt/libvirt.h.in
===================================================================
--- libvirt-foo.orig/include/libvirt/libvirt.h.in 2007-02-14 15:33:23.000000000 +0000
+++ libvirt-foo.orig/include/libvirt/libvirt.h.in 2007-02-14 15:33:23.000000000 +0000
@@ -526,6 +526,7 @@ int virNetworkGetUUIDString (virNetwor
char *buf);
char * virNetworkGetXMLDesc (virNetworkPtr network,
int flags);
+char * virNetworkGetBridgeName (virNetworkPtr network);
#ifdef __cplusplus
}
Index: libvirt-foo/src/driver.h
===================================================================
--- libvirt-foo.orig/src/driver.h 2007-02-14 15:33:23.000000000 +0000
+++ libvirt-foo.orig/src/driver.h 2007-02-14 15:33:23.000000000 +0000
@@ -220,6 +220,8 @@ typedef int
typedef char *
(*virDrvNetworkDumpXML) (virNetworkPtr network,
int flags);
+typedef char *
+ (*virDrvNetworkGetBridgeName) (virNetworkPtr network);
typedef struct _virNetworkDriver virNetworkDriver;
typedef virNetworkDriver *virNetworkDriverPtr;
@@ -245,6 +247,7 @@ struct _virNetworkDriver {
virDrvNetworkCreate networkCreate;
virDrvNetworkDestroy networkDestroy;
virDrvNetworkDumpXML networkDumpXML;
+ virDrvNetworkGetBridgeName networkGetBridgeName;
};
Index: libvirt-foo/src/libvirt.c
===================================================================
--- libvirt-foo.orig/src/libvirt.c 2007-02-14 15:37:08.000000000 +0000
+++ libvirt-foo.orig/src/libvirt.c 2007-02-14 15:37:08.000000000 +0000
@@ -2731,3 +2731,38 @@ virNetworkGetXMLDesc(virNetworkPtr netwo
}
return(ret);
}
+
+/**
+ * virNetworkGetBridgeName:
+ * @network: a network object
+ *
+ * Return a bridge interface name to which a domain may connect
+ * a network interface in order to join the network.
+ *
+ * Returns a 0 terminated interface name, or NULL in case of error.
+ * the caller must free() the returned value.
+ */
+char *
+virNetworkGetBridgeName(virNetworkPtr network)
+{
+ int i;
+ char *ret = NULL;
+ if (!VIR_IS_NETWORK(network)) {
+ virLibNetworkError(network, VIR_ERR_INVALID_NETWORK, __FUNCTION__);
+ return (NULL);
+ }
+
+ for (i = 0;i < network->conn->nb_network_drivers;i++) {
+ if ((network->conn->networkDrivers[i] != NULL) &&
+ (network->conn->networkDrivers[i]->networkGetBridgeName != NULL)) {
+ ret = network->conn->networkDrivers[i]->networkGetBridgeName(network);
+ if (ret)
+ break;
+ }
+ }
+ if (!ret) {
+ virLibConnError(network->conn, VIR_ERR_CALL_FAILED, __FUNCTION__);
+ return (NULL);
+ }
+ return(ret);
+}
Index: libvirt-foo/qemud/dispatch.c
===================================================================
--- libvirt-foo.orig/qemud/dispatch.c 2007-02-14 15:46:58.000000000 +0000
+++ libvirt-foo.orig/qemud/dispatch.c 2007-02-14 15:46:58.000000000 +0000
@@ -699,6 +699,24 @@ static int qemudDispatchNetworkDumpXML(s
return 0;
}
+static int qemudDispatchNetworkGetBridgeName(struct qemud_server *server, struct qemud_client *client,
+ struct qemud_packet *in, struct qemud_packet *out) {
+ if (in->header.dataSize != sizeof(in->data.networkGetBridgeNameRequest))
+ return -1;
+
+ int ret = qemudNetworkGetBridgeName(server,
+ in->data.networkDumpXMLRequest.uuid,
+ out->data.networkGetBridgeNameReply.ifname, QEMUD_MAX_IFNAME_LEN);
+ if (ret < 0) {
+ if (qemudDispatchFailure(server, client, out) < 0)
+ return -1;
+ } else {
+ out->header.type = QEMUD_PKT_NETWORK_GET_BRIDGE_NAME;
+ out->header.dataSize = sizeof(out->data.networkGetBridgeNameReply);
+ }
+ return 0;
+}
+
typedef int (*clientFunc)(struct qemud_server *server, struct qemud_client *client,
struct qemud_packet *in, struct qemud_packet *out);
@@ -740,6 +758,7 @@ clientFunc funcsTransmitRW[QEMUD_PKT_MAX
qemudDispatchNetworkStart,
qemudDispatchNetworkDestroy,
qemudDispatchNetworkDumpXML,
+ qemudDispatchNetworkGetBridgeName,
};
clientFunc funcsTransmitRO[QEMUD_PKT_MAX] = {
@@ -776,6 +795,7 @@ clientFunc funcsTransmitRO[QEMUD_PKT_MAX
NULL,
NULL,
qemudDispatchNetworkDumpXML,
+ qemudDispatchNetworkGetBridgeName,
};
/*
Index: libvirt-foo/qemud/driver.c
===================================================================
--- libvirt-foo.orig/qemud/driver.c 2007-02-14 15:54:56.000000000 +0000
+++ libvirt-foo.orig/qemud/driver.c 2007-02-14 15:54:56.000000000 +0000
@@ -743,6 +743,20 @@ int qemudNetworkDumpXML(struct qemud_ser
return 0;
}
+int qemudNetworkGetBridgeName(struct qemud_server *server, const unsigned char *uuid, char *ifname, int ifnamelen) {
+ struct qemud_network *network = qemudFindNetworkByUUID(server, uuid);
+
+ if (!network) {
+ qemudReportError(server, VIR_ERR_INVALID_NETWORK, "no network with matching id");
+ return -1;
+ }
+
+ strncpy(ifname, network->bridge, ifnamelen);
+ ifname[ifnamelen-1] = '\0';
+
+ return 0;
+}
+
/*
* Local variables:
* indent-tabs-mode: nil
Index: libvirt-foo/qemud/driver.h
===================================================================
--- libvirt-foo.orig/qemud/driver.h 2007-02-14 15:46:58.000000000 +0000
+++ libvirt-foo.orig/qemud/driver.h 2007-02-14 15:46:58.000000000 +0000
@@ -113,6 +113,10 @@ int qemudNetworkDumpXML(struct qemud_ser
const unsigned char *uuid,
char *xml,
int xmllen);
+int qemudNetworkGetBridgeName(struct qemud_server *server,
+ const unsigned char *uuid,
+ char *ifname,
+ int ifnamelen);
#endif
Index: libvirt-foo/qemud/protocol.h
===================================================================
--- libvirt-foo.orig/qemud/protocol.h 2007-02-14 15:46:58.000000000 +0000
+++ libvirt-foo.orig/qemud/protocol.h 2007-02-14 15:46:58.000000000 +0000
@@ -26,6 +26,7 @@
#define QEMUD_PROTOCOL_H__
#include <stdint.h>
+#include <net/if.h> /* for IF_NAMESIZE */
/* List of different packet types which can be sent */
enum {
@@ -62,6 +63,7 @@ enum {
QEMUD_PKT_NETWORK_START,
QEMUD_PKT_NETWORK_DESTROY,
QEMUD_PKT_NETWORK_DUMP_XML,
+ QEMUD_PKT_NETWORK_GET_BRIDGE_NAME,
QEMUD_PKT_MAX,
} qemud_packet_type;
@@ -73,6 +75,7 @@ enum {
#define QEMUD_UUID_RAW_LEN 16
#define QEMUD_MAX_NAME_LEN 50
#define QEMUD_MAX_XML_LEN 4096
+#define QEMUD_MAX_IFNAME_LEN IF_NAMESIZE
#define QEMUD_MAX_NUM_DOMAINS 100
#define QEMUD_MAX_NUM_NETWORKS 100
#define QEMUD_MAX_ERROR_LEN 1024
@@ -270,6 +273,12 @@ union qemud_packet_data {
struct {
char xml[QEMUD_MAX_XML_LEN];
} networkDumpXMLReply;
+ struct {
+ unsigned char uuid[QEMUD_UUID_RAW_LEN];
+ } networkGetBridgeNameRequest;
+ struct {
+ char ifname[QEMUD_MAX_IFNAME_LEN];
+ } networkGetBridgeNameReply;
};
/* Each packet has header & data */
Index: libvirt-foo/src/qemu_internal.c
===================================================================
--- libvirt-foo.orig/src/qemu_internal.c 2007-02-14 15:51:56.000000000 +0000
+++ libvirt-foo.orig/src/qemu_internal.c 2007-02-14 15:51:56.000000000 +0000
@@ -1077,6 +1077,22 @@ static char * qemuNetworkDumpXML(virNetw
return strdup(reply.data.networkDumpXMLReply.xml);
}
+static char * qemuNetworkGetBridgeName(virNetworkPtr network) {
+ struct qemud_packet req, reply;
+
+ req.header.type = QEMUD_PKT_NETWORK_GET_BRIDGE_NAME;
+ req.header.dataSize = sizeof(req.data.networkGetBridgeNameRequest);
+ memmove(req.data.networkGetBridgeNameRequest.uuid, network->uuid, QEMUD_UUID_RAW_LEN);
+
+ if (qemuProcessRequest(network->conn, NULL, &req, &reply) < 0) {
+ return NULL;
+ }
+
+ reply.data.networkGetBridgeNameReply.ifname[QEMUD_MAX_IFNAME_LEN-1] = '\0';
+
+ return strdup(reply.data.networkGetBridgeNameReply.ifname);
+}
+
static virDriver qemuDriver = {
VIR_DRV_QEMU,
"QEMU",
@@ -1134,6 +1150,7 @@ static virNetworkDriver qemuNetworkDrive
qemuNetworkCreate, /* networkCreate */
qemuNetworkDestroy, /* networkDestroy */
qemuNetworkDumpXML, /* networkDumpXML */
+ qemuNetworkGetBridgeName, /* networkGetBridgeName */
};
void qemuRegister(void) {
@@ -1141,7 +1158,6 @@ void qemuRegister(void) {
virRegisterDriver(&qemuNetworkDriver);
}
-
/*
* Local variables:
* indent-tabs-mode: nil
Index: libvirt-foo/src/libvirt_sym.version
===================================================================
--- libvirt-foo.orig/src/libvirt_sym.version 2007-02-14 15:33:23.000000000 +0000
+++ libvirt-foo.orig/src/libvirt_sym.version 2007-02-14 15:33:23.000000000 +0000
@@ -75,6 +75,7 @@
virNetworkGetUUID;
virNetworkGetUUIDString;
virNetworkGetXMLDesc;
+ virNetworkGetBridgeName;
local: *;
};
--