On 06/17/2015 03:35 PM, Mikhail Feoktistov wrote:
In this patch we add VIR_DOMAIN_DEVICE_NET handlers implementation
for domainAttachDevice and domainDetachDevice callbacks.
As soon as we don't support this operation for hypervisor type domains,
we implement this functionality for containers only.
In detach procedure we find network device by MAC address.
Because PrlVmDevNet_GetMacAddress() returns MAC as a UTF-8 encoded
null-terminated string, we use memcmp() to compare it.
Also we remove corresponding virtual network by prlsdkDelNetAdapter call.
---
src/vz/vz_driver.c | 16 +++++++
src/vz/vz_sdk.c | 127 ++++++++++++++++++++++++++++++++++++++++++++++++++++
src/vz/vz_sdk.h | 4 ++
3 files changed, 147 insertions(+), 0 deletions(-)
diff --git a/src/vz/vz_driver.c b/src/vz/vz_driver.c
index cef3c77..d9ddd4f 100644
--- a/src/vz/vz_driver.c
+++ b/src/vz/vz_driver.c
@@ -1117,6 +1117,14 @@ static int vzDomainAttachDeviceFlags(virDomainPtr dom, const char *xml,
goto cleanup;
}
break;
+ case VIR_DOMAIN_DEVICE_NET:
+ ret = prlsdkAttachNet(privdom, privconn, dev->data.net);
+ if (ret) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("network attach failed"));
We always report errors where they occurred, so I think you skip this
message, it will be reported inside prlsdkAttachNet.
+ goto cleanup;
+ }
+ break;
default:
virReportError(VIR_ERR_OPERATION_UNSUPPORTED,
_("device type '%s' cannot be attached"),
@@ -1186,6 +1194,14 @@ static int vzDomainDetachDeviceFlags(virDomainPtr dom, const char *xml,
goto cleanup;
}
break;
+ case VIR_DOMAIN_DEVICE_NET:
+ ret = prlsdkDetachNet(privdom, privconn, dev->data.net);
+ if (ret) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("network detach failed"));
+ goto cleanup;
+ }
+ break;
default:
virReportError(VIR_ERR_OPERATION_UNSUPPORTED,
_("device type '%s' cannot be detached"),
diff --git a/src/vz/vz_sdk.c b/src/vz/vz_sdk.c
index 090a3ad..0f92e52 100644
--- a/src/vz/vz_sdk.c
+++ b/src/vz/vz_sdk.c
@@ -2914,6 +2914,133 @@ static void prlsdkDelNet(vzConnPtr privconn, virDomainNetDefPtr net)
PrlHandle_Free(vnet);
}
+int prlsdkAttachNet(virDomainObjPtr dom, parallelsConnPtr privconn, virDomainNetDefPtr net)
+{
+ int ret = -1;
+ parallelsDomObjPtr privdom = dom->privateData;
+ PRL_HANDLE job = PRL_INVALID_HANDLE;
+
+ if (!IS_CT(dom->def)) {
+ virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
+ _("network device cannot be attached"));
+ goto cleanup;
+ }
+
+ job = PrlVm_BeginEdit(privdom->sdkdom);
+ if (PRL_FAILED(waitJob(job)))
+ goto cleanup;
+
+ ret = prlsdkAddNet(privdom->sdkdom, privconn, net, IS_CT(dom->def));
+ if (ret == 0) {
+ job = PrlVm_CommitEx(privdom->sdkdom, PVCF_DETACH_HDD_BUNDLE);
+ if (PRL_FAILED(waitJob(job))) {
+ ret = -1;
+ goto cleanup;
+ }
+ }
+
+ cleanup:
There is no cleanup here, so you can just return from the function
instead of jumping to cleanup section.
+ return ret;
+}
+
+static int
+prlsdkGetNetIndex(PRL_HANDLE sdkdom, virDomainNetDefPtr net)
+{
+ int idx = -1;
+ PRL_RESULT pret;
+ PRL_UINT32 netCount;
+ PRL_UINT32 i;
+ PRL_HANDLE adapter = PRL_INVALID_HANDLE;
+ PRL_UINT32 len;
+ char adapterMac[PRL_MAC_STRING_BUFNAME];
+ char netMac[PRL_MAC_STRING_BUFNAME];
Using names 'adapterMac' and 'netMac' is a little confusing, because net
and adapter are synonyms in this context, I think something like
'expectedMac' would be better name for netMac.
+
+ prlsdkFormatMac(&net->mac, netMac);
+ pret = PrlVmCfg_GetNetAdaptersCount(sdkdom, &netCount);
+ prlsdkCheckRetGoto(pret, cleanup);
+
+ for (i = 0; i < netCount; ++i) {
+
+ pret = PrlVmCfg_GetNetAdapter(sdkdom, i, &adapter);
+ prlsdkCheckRetGoto(pret, cleanup);
+
+ len = sizeof(adapterMac);
+ memset(adapterMac, 0, sizeof(adapterMac));
+ pret = PrlVmDevNet_GetMacAddress(adapter, adapterMac, &len);
+ prlsdkCheckRetGoto(pret, cleanup);
+
+ if (memcmp(adapterMac, netMac, PRL_MAC_STRING_BUFNAME)) {
+
+ PrlHandle_Free(adapter);
+ adapter = PRL_INVALID_HANDLE;
+ continue;
+ }
+
+ idx = i;
+ break;
+ }
+
+ cleanup:
+ PrlHandle_Free(adapter);
+ return idx;
+}
+
+static int prlsdkDelNetAdapter(PRL_HANDLE sdkdom, int idx)
+{
+ int ret = -1;
+ PRL_RESULT pret;
+ PRL_HANDLE sdknet = PRL_INVALID_HANDLE;
+
+ pret = PrlVmCfg_GetNetAdapter(sdkdom, idx, &sdknet);
+ prlsdkCheckRetGoto(pret, cleanup);
+
+ pret = PrlVmDev_Remove(sdknet);
+ prlsdkCheckRetGoto(pret, cleanup);
+
+ ret = 0;
+
+ cleanup:
+ PrlHandle_Free(sdknet);
+ return ret;
+}
+
+int prlsdkDetachNet(virDomainObjPtr dom, parallelsConnPtr privconn, virDomainNetDefPtr net)
+{
+ int ret = -1, idx = -1;
+ parallelsDomObjPtr privdom = dom->privateData;
+ PRL_HANDLE job = PRL_INVALID_HANDLE;
+
+ if (!IS_CT(dom->def)) {
+ virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
+ _("network device cannot be detached"));
+ goto cleanup;
+ }
+
+ idx = prlsdkGetNetIndex(privdom->sdkdom, net);
+ if (idx < 0)
+ goto cleanup;
There is a race here: if another thread change network adapters after
you got idx and before PrlVm_BeginEdit, you will delete wrong adapter.
+
+ job = PrlVm_BeginEdit(privdom->sdkdom);
+ if (PRL_FAILED(waitJob(job)))
+ goto cleanup;
+
+ ret = prlsdkDelNet(privconn, net);
+ if (ret != 0)
+ goto cleanup;
+
+ ret = prlsdkDelNetAdapter(privdom->sdkdom, idx);
+ if (ret == 0) {
+ job = PrlVm_CommitEx(privdom->sdkdom, PVCF_DETACH_HDD_BUNDLE);
+ if (PRL_FAILED(waitJob(job))) {
+ ret = -1;
+ goto cleanup;
+ }
+ }
+
+ cleanup:
+ return ret;
+}
+
static int prlsdkDelDisk(PRL_HANDLE sdkdom, int idx)
{
int ret = -1;
diff --git a/src/vz/vz_sdk.h b/src/vz/vz_sdk.h
index dd4fecf..cde8904 100644
--- a/src/vz/vz_sdk.h
+++ b/src/vz/vz_sdk.h
@@ -66,3 +66,7 @@ int
prlsdkDetachVolume(virDomainObjPtr dom, virDomainDiskDefPtr disk);
int
prlsdkGetBlockStats(virDomainObjPtr dom, virDomainDiskDefPtr disk, virDomainBlockStatsPtr stats);
+int
+prlsdkAttachNet(virDomainObjPtr dom, parallelsConnPtr privconn, virDomainNetDefPtr net);
+int
+prlsdkDetachNet(virDomainObjPtr dom, parallelsConnPtr privconn, virDomainNetDefPtr net);
--
Dmitry Guryanov
--
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