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Refactor LXC NIC creation to allow reuse by hotplug code

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The code for creating veth/macvlan devices is part of the
LXC process startup code. Refactor this a little and export
the methods to the rest of the LXC driver. This allows them
to be reused for NIC hotplug code

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
This commit is contained in:
Daniel P. Berrange 2012-11-27 12:55:02 +00:00
parent aae0fc2a92
commit e89c68b8bb
2 changed files with 50 additions and 60 deletions
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102
src/lxc/lxc_process.c
View File

@ -297,14 +297,12 @@ static void virLXCProcessCleanup(virLXCDriverPtr driver,
} }
static int virLXCProcessSetupInterfaceBridged(virConnectPtr conn, char *virLXCProcessSetupInterfaceBridged(virConnectPtr conn,
virDomainDefPtr vm, virDomainDefPtr vm,
virDomainNetDefPtr net, virDomainNetDefPtr net,
const char *brname, const char *brname)
unsigned int *nveths,
char ***veths)
{ {
int ret = -1; char *ret = NULL;
char *parentVeth; char *parentVeth;
char *containerVeth = NULL; char *containerVeth = NULL;
const virNetDevVPortProfilePtr vport = virDomainNetGetActualVirtPortProfile(net); const virNetDevVPortProfilePtr vport = virDomainNetGetActualVirtPortProfile(net);
@ -318,24 +316,17 @@ static int virLXCProcessSetupInterfaceBridged(virConnectPtr conn,
if (net->ifname == NULL) if (net->ifname == NULL)
net->ifname = parentVeth; net->ifname = parentVeth;
if (VIR_REALLOC_N(*veths, (*nveths)+1) < 0) {
virReportOOMError();
VIR_FREE(containerVeth);
goto cleanup;
}
(*veths)[(*nveths)] = containerVeth;
(*nveths)++;
if (virNetDevSetMAC(containerVeth, &net->mac) < 0) if (virNetDevSetMAC(containerVeth, &net->mac) < 0)
goto cleanup; goto cleanup;
if (vport && vport->virtPortType == VIR_NETDEV_VPORT_PROFILE_OPENVSWITCH) if (vport && vport->virtPortType == VIR_NETDEV_VPORT_PROFILE_OPENVSWITCH) {
ret = virNetDevOpenvswitchAddPort(brname, parentVeth, &net->mac, if (virNetDevOpenvswitchAddPort(brname, parentVeth, &net->mac,
vm->uuid, vport, virDomainNetGetActualVlan(net)); vm->uuid, vport, virDomainNetGetActualVlan(net)) < 0)
else goto cleanup;
ret = virNetDevBridgeAddPort(brname, parentVeth); } else {
if (ret < 0) if (virNetDevBridgeAddPort(brname, parentVeth) < 0)
goto cleanup; goto cleanup;
}
if (virNetDevSetOnline(parentVeth, true) < 0) if (virNetDevSetOnline(parentVeth, true) < 0)
goto cleanup; goto cleanup;
@ -353,20 +344,18 @@ static int virLXCProcessSetupInterfaceBridged(virConnectPtr conn,
virDomainConfNWFilterInstantiate(conn, vm->uuid, net) < 0) virDomainConfNWFilterInstantiate(conn, vm->uuid, net) < 0)
goto cleanup; goto cleanup;
ret = 0; ret = containerVeth;
cleanup: cleanup:
return ret; return ret;
} }
static int virLXCProcessSetupInterfaceDirect(virConnectPtr conn, char *virLXCProcessSetupInterfaceDirect(virConnectPtr conn,
virDomainDefPtr def, virDomainDefPtr def,
virDomainNetDefPtr net, virDomainNetDefPtr net)
unsigned int *nveths,
char ***veths)
{ {
int ret = -1; char *ret = NULL;
char *res_ifname = NULL; char *res_ifname = NULL;
virLXCDriverPtr driver = conn->privateData; virLXCDriverPtr driver = conn->privateData;
virNetDevBandwidthPtr bw; virNetDevBandwidthPtr bw;
@ -381,7 +370,7 @@ static int virLXCProcessSetupInterfaceDirect(virConnectPtr conn,
if (bw) { if (bw) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("Unable to set network bandwidth on direct interfaces")); _("Unable to set network bandwidth on direct interfaces"));
return -1; return NULL;
} }
/* XXX how todo port profiles ? /* XXX how todo port profiles ?
@ -395,15 +384,9 @@ static int virLXCProcessSetupInterfaceDirect(virConnectPtr conn,
if (prof) { if (prof) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("Unable to set port profile on direct interfaces")); _("Unable to set port profile on direct interfaces"));
return -1; return NULL;
} }
if (VIR_REALLOC_N(*veths, (*nveths)+1) < 0) {
virReportOOMError();
return -1;
}
(*veths)[(*nveths)] = NULL;
if (virNetDevMacVLanCreateWithVPortProfile( if (virNetDevMacVLanCreateWithVPortProfile(
net->ifname, &net->mac, net->ifname, &net->mac,
virDomainNetGetActualDirectDev(net), virDomainNetGetActualDirectDev(net),
@ -416,10 +399,7 @@ static int virLXCProcessSetupInterfaceDirect(virConnectPtr conn,
virDomainNetGetActualBandwidth(net)) < 0) virDomainNetGetActualBandwidth(net)) < 0)
goto cleanup; goto cleanup;
(*veths)[(*nveths)] = res_ifname; ret = res_ifname;
(*nveths)++;
ret = 0;
cleanup: cleanup:
return ret; return ret;
@ -441,13 +421,14 @@ cleanup:
*/ */
static int virLXCProcessSetupInterfaces(virConnectPtr conn, static int virLXCProcessSetupInterfaces(virConnectPtr conn,
virDomainDefPtr def, virDomainDefPtr def,
unsigned int *nveths, size_t *nveths,
char ***veths) char ***veths)
{ {
int ret = -1; int ret = -1;
size_t i; size_t i;
for (i = 0 ; i < def->nnets ; i++) { for (i = 0 ; i < def->nnets ; i++) {
char *veth = NULL;
/* If appropriate, grab a physical device from the configured /* If appropriate, grab a physical device from the configured
* network's pool of devices, or resolve bridge device name * network's pool of devices, or resolve bridge device name
* to the one defined in the network definition. * to the one defined in the network definition.
@ -455,6 +436,11 @@ static int virLXCProcessSetupInterfaces(virConnectPtr conn,
if (networkAllocateActualDevice(def->nets[i]) < 0) if (networkAllocateActualDevice(def->nets[i]) < 0)
goto cleanup; goto cleanup;
if (VIR_EXPAND_N(*veths, *nveths, 1) < 0) {
virReportOOMError();
goto cleanup;
}
switch (virDomainNetGetActualType(def->nets[i])) { switch (virDomainNetGetActualType(def->nets[i])) {
case VIR_DOMAIN_NET_TYPE_NETWORK: { case VIR_DOMAIN_NET_TYPE_NETWORK: {
virNetworkPtr network; virNetworkPtr network;
@ -491,12 +477,10 @@ static int virLXCProcessSetupInterfaces(virConnectPtr conn,
if (fail) if (fail)
goto cleanup; goto cleanup;
if (virLXCProcessSetupInterfaceBridged(conn, if (!(veth = virLXCProcessSetupInterfaceBridged(conn,
def, def,
def->nets[i], def->nets[i],
brname, brname))) {
nveths,
veths) < 0) {
VIR_FREE(brname); VIR_FREE(brname);
goto cleanup; goto cleanup;
} }
@ -510,21 +494,17 @@ static int virLXCProcessSetupInterfaces(virConnectPtr conn,
_("No bridge name specified")); _("No bridge name specified"));
goto cleanup; goto cleanup;
} }
if (virLXCProcessSetupInterfaceBridged(conn, if (!(veth = virLXCProcessSetupInterfaceBridged(conn,
def, def,
def->nets[i], def->nets[i],
brname, brname)))
nveths,
veths) < 0)
goto cleanup; goto cleanup;
} break; } break;
case VIR_DOMAIN_NET_TYPE_DIRECT: case VIR_DOMAIN_NET_TYPE_DIRECT:
if (virLXCProcessSetupInterfaceDirect(conn, if (!(veth = virLXCProcessSetupInterfaceDirect(conn,
def, def,
def->nets[i], def->nets[i])))
nveths,
veths) < 0)
goto cleanup; goto cleanup;
break; break;
@ -542,6 +522,8 @@ static int virLXCProcessSetupInterfaces(virConnectPtr conn,
)); ));
goto cleanup; goto cleanup;
} }
(*veths)[(*nveths)-1] = veth;
} }
ret = 0; ret = 0;
@ -923,7 +905,7 @@ int virLXCProcessStart(virConnectPtr conn,
size_t i; size_t i;
char *logfile = NULL; char *logfile = NULL;
int logfd = -1; int logfd = -1;
unsigned int nveths = 0; size_t nveths = 0;
char **veths = NULL; char **veths = NULL;
int handshakefds[2] = { -1, -1 }; int handshakefds[2] = { -1, -1 };
off_t pos = -1; off_t pos = -1;

8
src/lxc/lxc_process.h
View File

@ -47,4 +47,12 @@ void virLXCProcessAutostartAll(virLXCDriverPtr driver);
int virLXCProcessReconnectAll(virLXCDriverPtr driver, int virLXCProcessReconnectAll(virLXCDriverPtr driver,
virDomainObjListPtr doms); virDomainObjListPtr doms);
char *virLXCProcessSetupInterfaceBridged(virConnectPtr conn,
virDomainDefPtr vm,
virDomainNetDefPtr net,
const char *brname);
char *virLXCProcessSetupInterfaceDirect(virConnectPtr conn,
virDomainDefPtr def,
virDomainNetDefPtr net);
#endif /* __LXC_PROCESS_H__ */ #endif /* __LXC_PROCESS_H__ */