* Handler for a given netlink command. Not all the parameters are used by all
* the handlers.
*/
-typedef NTSTATUS (*NetlinkCmdHandler)(PIRP irp, PFILE_OBJECT fileObject,
- PVOID inputBuffer, UINT32 inputLength,
- PVOID outputBuffer, UINT32 outputLength,
- UINT32 *replyLen);
+typedef NTSTATUS(NetlinkCmdHandler)(POVS_USER_PARAMS_CONTEXT usrParamsCtx,
+ UINT32 *replyLen);
typedef struct _NETLINK_CMD {
UINT16 cmd;
- NetlinkCmdHandler handler;
+ NetlinkCmdHandler *handler;
UINT32 supportedDevOp; /* Supported device operations. */
BOOLEAN validateDpIndex; /* Does command require a valid DP argument. */
} NETLINK_CMD, *PNETLINK_CMD;
UINT16 opsCount;
} NETLINK_FAMILY, *PNETLINK_FAMILY;
-/*
- * Device operations to tag netlink commands with. This is a bitmask since it is
- * possible that a particular command can be invoked via different device
- * operations.
- */
-#define OVS_READ_DEV_OP (1 << 0)
-#define OVS_WRITE_DEV_OP (1 << 1)
-#define OVS_TRANSACTION_DEV_OP (1 << 2)
-
/* Handlers for the various netlink commands. */
-static NTSTATUS OvsGetPidCmdHandler(PIRP irp, PFILE_OBJECT fileObject,
- PVOID inputBuffer, UINT32 inputLength,
- PVOID outputBuffer, UINT32 outputLength,
- UINT32 *replyLen);
+static NetlinkCmdHandler OvsGetPidCmdHandler,
+ OvsPendEventCmdHandler,
+ OvsSubscribeEventCmdHandler,
+ OvsReadEventCmdHandler,
+ OvsNewDpCmdHandler,
+ OvsGetDpCmdHandler,
+ OvsSetDpCmdHandler,
+ OvsGetVportCmdHandler;
+
+NetlinkCmdHandler OvsGetNetdevCmdHandler;
+
+static NTSTATUS HandleGetDpTransaction(POVS_USER_PARAMS_CONTEXT usrParamsCtx,
+ UINT32 *replyLen);
+static NTSTATUS HandleGetDpDump(POVS_USER_PARAMS_CONTEXT usrParamsCtx,
+ UINT32 *replyLen);
+static NTSTATUS HandleDpTransactionCommon(
+ POVS_USER_PARAMS_CONTEXT usrParamsCtx, UINT32 *replyLen);
/*
* The various netlink families, along with the supported commands. Most of
/* Netlink control family: this is a Windows specific family. */
NETLINK_CMD nlControlFamilyCmdOps[] = {
- { OVS_CTRL_CMD_WIN_GET_PID, OvsGetPidCmdHandler,
- OVS_TRANSACTION_DEV_OP, FALSE }
+ { .cmd = OVS_CTRL_CMD_WIN_GET_PID,
+ .handler = OvsGetPidCmdHandler,
+ .supportedDevOp = OVS_TRANSACTION_DEV_OP,
+ .validateDpIndex = FALSE,
+ },
+ { .cmd = OVS_CTRL_CMD_WIN_PEND_REQ,
+ .handler = OvsPendEventCmdHandler,
+ .supportedDevOp = OVS_WRITE_DEV_OP,
+ .validateDpIndex = TRUE,
+ },
+ { .cmd = OVS_CTRL_CMD_MC_SUBSCRIBE_REQ,
+ .handler = OvsSubscribeEventCmdHandler,
+ .supportedDevOp = OVS_WRITE_DEV_OP,
+ .validateDpIndex = TRUE,
+ },
+ { .cmd = OVS_CTRL_CMD_EVENT_NOTIFY,
+ .handler = OvsReadEventCmdHandler,
+ .supportedDevOp = OVS_READ_EVENT_DEV_OP,
+ .validateDpIndex = FALSE,
+ }
};
NETLINK_FAMILY nlControlFamilyOps = {
.opsCount = ARRAY_SIZE(nlControlFamilyCmdOps)
};
+/* Netlink datapath family. */
+NETLINK_CMD nlDatapathFamilyCmdOps[] = {
+ { .cmd = OVS_DP_CMD_NEW,
+ .handler = OvsNewDpCmdHandler,
+ .supportedDevOp = OVS_TRANSACTION_DEV_OP,
+ .validateDpIndex = FALSE
+ },
+ { .cmd = OVS_DP_CMD_GET,
+ .handler = OvsGetDpCmdHandler,
+ .supportedDevOp = OVS_WRITE_DEV_OP | OVS_READ_DEV_OP |
+ OVS_TRANSACTION_DEV_OP,
+ .validateDpIndex = FALSE
+ },
+ { .cmd = OVS_DP_CMD_SET,
+ .handler = OvsSetDpCmdHandler,
+ .supportedDevOp = OVS_WRITE_DEV_OP | OVS_READ_DEV_OP |
+ OVS_TRANSACTION_DEV_OP,
+ .validateDpIndex = TRUE
+ }
+};
+NETLINK_FAMILY nlDatapathFamilyOps = {
+ .name = OVS_DATAPATH_FAMILY,
+ .id = OVS_WIN_NL_DATAPATH_FAMILY_ID,
+ .version = OVS_DATAPATH_VERSION,
+ .maxAttr = OVS_DP_ATTR_MAX,
+ .cmds = nlDatapathFamilyCmdOps,
+ .opsCount = ARRAY_SIZE(nlDatapathFamilyCmdOps)
+};
/* Netlink packet family. */
/* XXX: Add commands here. */
.opsCount = 0
};
-/* Netlink datapath family. */
-/* XXX: Add commands here. */
-NETLINK_FAMILY nlDatapathFamilyOps = {
- .name = OVS_DATAPATH_FAMILY,
- .id = OVS_WIN_NL_DATAPATH_FAMILY_ID,
- .version = OVS_DATAPATH_VERSION,
- .maxAttr = OVS_DP_ATTR_MAX,
- .cmds = NULL, /* XXX: placeholder. */
- .opsCount = 0
+/* Netlink vport family. */
+NETLINK_CMD nlVportFamilyCmdOps[] = {
+ { .cmd = OVS_VPORT_CMD_GET,
+ .handler = OvsGetVportCmdHandler,
+ .supportedDevOp = OVS_WRITE_DEV_OP | OVS_READ_DEV_OP |
+ OVS_TRANSACTION_DEV_OP,
+ .validateDpIndex = TRUE
+ }
};
-/* Netlink vport family. */
-/* XXX: Add commands here. */
NETLINK_FAMILY nlVportFamilyOps = {
.name = OVS_VPORT_FAMILY,
.id = OVS_WIN_NL_VPORT_FAMILY_ID,
.version = OVS_VPORT_VERSION,
.maxAttr = OVS_VPORT_ATTR_MAX,
- .cmds = NULL, /* XXX: placeholder. */
- .opsCount = 0
+ .cmds = nlVportFamilyCmdOps,
+ .opsCount = ARRAY_SIZE(nlVportFamilyCmdOps)
};
/* Netlink flow family. */
-/* XXX: Add commands here. */
+
+NETLINK_CMD nlFlowFamilyCmdOps[] = {
+ { .cmd = OVS_FLOW_CMD_NEW,
+ .handler = OvsFlowNlCmdHandler,
+ .supportedDevOp = OVS_TRANSACTION_DEV_OP,
+ .validateDpIndex = TRUE
+ },
+ { .cmd = OVS_FLOW_CMD_SET,
+ .handler = OvsFlowNlCmdHandler,
+ .supportedDevOp = OVS_TRANSACTION_DEV_OP,
+ .validateDpIndex = TRUE
+ },
+ { .cmd = OVS_FLOW_CMD_DEL,
+ .handler = OvsFlowNlCmdHandler,
+ .supportedDevOp = OVS_TRANSACTION_DEV_OP,
+ .validateDpIndex = TRUE
+ },
+ { .cmd = OVS_FLOW_CMD_GET,
+ .handler = OvsFlowNlGetCmdHandler,
+ .supportedDevOp = OVS_TRANSACTION_DEV_OP |
+ OVS_WRITE_DEV_OP | OVS_READ_DEV_OP,
+ .validateDpIndex = TRUE
+ },
+};
+
NETLINK_FAMILY nlFLowFamilyOps = {
.name = OVS_FLOW_FAMILY,
.id = OVS_WIN_NL_FLOW_FAMILY_ID,
.version = OVS_FLOW_VERSION,
.maxAttr = OVS_FLOW_ATTR_MAX,
- .cmds = NULL, /* XXX: placeholder. */
- .opsCount = 0
+ .cmds = nlFlowFamilyCmdOps,
+ .opsCount = ARRAY_SIZE(nlFlowFamilyCmdOps)
};
-static NTSTATUS
-MapIrpOutputBuffer(PIRP irp,
- UINT32 bufferLength,
- UINT32 requiredLength,
- PVOID *buffer);
-static NTSTATUS
-ValidateNetlinkCmd(UINT32 devOp,
- POVS_MESSAGE ovsMsg,
- NETLINK_FAMILY *nlFamilyOps);
-static NTSTATUS
-InvokeNetlinkCmdHandler(PIRP irp,
- PFILE_OBJECT fileObject,
- UINT32 devOp,
- POVS_MESSAGE ovsMsg,
- NETLINK_FAMILY *nlFamily,
- PVOID inputBuffer,
- UINT32 inputLength,
- PVOID outputBuffer,
- UINT32 outputLength,
- UINT32 *replyLen);
+/* Netlink netdev family. */
+NETLINK_CMD nlNetdevFamilyCmdOps[] = {
+ { .cmd = OVS_WIN_NETDEV_CMD_GET,
+ .handler = OvsGetNetdevCmdHandler,
+ .supportedDevOp = OVS_TRANSACTION_DEV_OP,
+ .validateDpIndex = FALSE
+ },
+};
+NETLINK_FAMILY nlNetdevFamilyOps = {
+ .name = OVS_WIN_NETDEV_FAMILY,
+ .id = OVS_WIN_NL_NETDEV_FAMILY_ID,
+ .version = OVS_WIN_NETDEV_VERSION,
+ .maxAttr = OVS_WIN_NETDEV_ATTR_MAX,
+ .cmds = nlNetdevFamilyCmdOps,
+ .opsCount = ARRAY_SIZE(nlNetdevFamilyCmdOps)
+};
+
+static NTSTATUS MapIrpOutputBuffer(PIRP irp,
+ UINT32 bufferLength,
+ UINT32 requiredLength,
+ PVOID *buffer);
+static NTSTATUS ValidateNetlinkCmd(UINT32 devOp,
+ POVS_OPEN_INSTANCE instance,
+ POVS_MESSAGE ovsMsg,
+ NETLINK_FAMILY *nlFamilyOps);
+static NTSTATUS InvokeNetlinkCmdHandler(POVS_USER_PARAMS_CONTEXT usrParamsCtx,
+ NETLINK_FAMILY *nlFamilyOps,
+ UINT32 *replyLen);
/* Handles to the device object for communication with userspace. */
NDIS_HANDLE gOvsDeviceHandle;
* each thread, and at least one descriptor per vport. Revisit this later.
*/
#define OVS_MAX_OPEN_INSTANCES 512
+#define OVS_SYSTEM_DP_NAME "ovs-system"
POVS_OPEN_INSTANCE ovsOpenInstanceArray[OVS_MAX_OPEN_INSTANCES];
UINT32 ovsNumberOfOpenInstances;
for (i = 0; i < OVS_MAX_OPEN_INSTANCES; i++) {
if (ovsOpenInstanceArray[i] == NULL) {
ovsOpenInstanceArray[i] = instance;
+ ovsNumberOfOpenInstances++;
instance->cookie = i;
break;
}
fileObject->FsContext = NULL;
ASSERT(ovsOpenInstanceArray[instance->cookie] == instance);
ovsOpenInstanceArray[instance->cookie] = NULL;
+ ovsNumberOfOpenInstances--;
OvsReleaseCtrlLock();
ASSERT(instance->eventQueue == NULL);
ASSERT (instance->packetQueue == NULL);
OVS_MESSAGE ovsMsgReadOp;
POVS_MESSAGE ovsMsg;
NETLINK_FAMILY *nlFamilyOps;
+ OVS_USER_PARAMS_CONTEXT usrParamsCtx;
#ifdef DBG
POVS_DEVICE_EXTENSION ovsExt =
devOp = OVS_TRANSACTION_DEV_OP;
break;
+ case OVS_IOCTL_READ_EVENT:
+ /* This IOCTL is used to read events */
+ if (outputBufferLen != 0) {
+ status = MapIrpOutputBuffer(irp, outputBufferLen,
+ sizeof *ovsMsg, &outputBuffer);
+ if (status != STATUS_SUCCESS) {
+ goto done;
+ }
+ ASSERT(outputBuffer);
+ } else {
+ status = STATUS_NDIS_INVALID_LENGTH;
+ goto done;
+ }
+ inputBuffer = NULL;
+ inputBufferLen = 0;
+
+ ovsMsg = &ovsMsgReadOp;
+ ovsMsg->nlMsg.nlmsgType = OVS_WIN_NL_CTRL_FAMILY_ID;
+ /* An "artificial" command so we can use NL family function table*/
+ ovsMsg->genlMsg.cmd = OVS_CTRL_CMD_EVENT_NOTIFY;
+ devOp = OVS_READ_DEV_OP;
+ break;
+
case OVS_IOCTL_READ:
/* Output buffer is mandatory. */
if (outputBufferLen != 0) {
*/
inputBuffer = NULL;
inputBufferLen = 0;
- /* Create an NL message for consumption. */
- ovsMsg = &ovsMsgReadOp;
- devOp = OVS_READ_DEV_OP;
/*
* For implementing read (ioctl or otherwise), we need to store some
- * state in the instance to indicate the previous command. The state can
- * setup 'ovsMsgReadOp' appropriately.
+ * state in the instance to indicate the command that started the dump
+ * operation. The state can setup 'ovsMsgReadOp' appropriately. Note
+ * that 'ovsMsgReadOp' is needed only in this function to call into the
+ * appropraite handler. The handler itself can access the state in the
+ * instance.
*
- * XXX: Support for that will be added as the userspace code evolves.
+ * In the absence of a dump start, return 0 bytes.
*/
- status = STATUS_NOT_IMPLEMENTED;
- goto done;
+ if (instance->dumpState.ovsMsg == NULL) {
+ replyLen = 0;
+ status = STATUS_SUCCESS;
+ goto done;
+ }
+ RtlCopyMemory(&ovsMsgReadOp, instance->dumpState.ovsMsg,
+ sizeof (ovsMsgReadOp));
+
+ /* Create an NL message for consumption. */
+ ovsMsg = &ovsMsgReadOp;
+ devOp = OVS_READ_DEV_OP;
break;
case OVS_WIN_NL_CTRL_FAMILY_ID:
nlFamilyOps = &nlControlFamilyOps;
break;
- case OVS_WIN_NL_PACKET_FAMILY_ID:
case OVS_WIN_NL_DATAPATH_FAMILY_ID:
+ nlFamilyOps = &nlDatapathFamilyOps;
+ break;
case OVS_WIN_NL_FLOW_FAMILY_ID:
- case OVS_WIN_NL_VPORT_FAMILY_ID:
+ nlFamilyOps = &nlFLowFamilyOps;
+ break;
+ case OVS_WIN_NL_PACKET_FAMILY_ID:
status = STATUS_NOT_IMPLEMENTED;
goto done;
-
+ case OVS_WIN_NL_VPORT_FAMILY_ID:
+ nlFamilyOps = &nlVportFamilyOps;
+ break;
+ case OVS_WIN_NL_NETDEV_FAMILY_ID:
+ nlFamilyOps = &nlNetdevFamilyOps;
+ break;
default:
status = STATUS_INVALID_PARAMETER;
goto done;
* previously.
*/
if (devOp != OVS_READ_DEV_OP) {
- status = ValidateNetlinkCmd(devOp, ovsMsg, nlFamilyOps);
+ status = ValidateNetlinkCmd(devOp, instance, ovsMsg, nlFamilyOps);
if (status != STATUS_SUCCESS) {
goto done;
}
}
- status = InvokeNetlinkCmdHandler(irp, fileObject, devOp,
- ovsMsg, nlFamilyOps,
- inputBuffer, inputBufferLen,
- outputBuffer, outputBufferLen,
- &replyLen);
+ InitUserParamsCtx(irp, instance, devOp, ovsMsg,
+ inputBuffer, inputBufferLen,
+ outputBuffer, outputBufferLen,
+ &usrParamsCtx);
+
+ status = InvokeNetlinkCmdHandler(&usrParamsCtx, nlFamilyOps, &replyLen);
done:
KeMemoryBarrier();
*/
static NTSTATUS
ValidateNetlinkCmd(UINT32 devOp,
+ POVS_OPEN_INSTANCE instance,
POVS_MESSAGE ovsMsg,
NETLINK_FAMILY *nlFamilyOps)
{
OvsReleaseCtrlLock();
}
+ /* Validate the PID. */
+ if (ovsMsg->genlMsg.cmd != OVS_CTRL_CMD_WIN_GET_PID) {
+ if (ovsMsg->nlMsg.nlmsgPid != instance->pid) {
+ status = STATUS_INVALID_PARAMETER;
+ goto done;
+ }
+ }
+
status = STATUS_SUCCESS;
break;
}
* --------------------------------------------------------------------------
*/
static NTSTATUS
-InvokeNetlinkCmdHandler(PIRP irp,
- PFILE_OBJECT fileObject,
- UINT32 devOp,
- OVS_MESSAGE *ovsMsg,
+InvokeNetlinkCmdHandler(POVS_USER_PARAMS_CONTEXT usrParamsCtx,
NETLINK_FAMILY *nlFamilyOps,
- PVOID inputBuffer,
- UINT32 inputLength,
- PVOID outputBuffer,
- UINT32 outputLength,
UINT32 *replyLen)
{
NTSTATUS status = STATUS_INVALID_PARAMETER;
UINT16 i;
- UNREFERENCED_PARAMETER(devOp);
-
for (i = 0; i < nlFamilyOps->opsCount; i++) {
- if (nlFamilyOps->cmds[i].cmd == ovsMsg->genlMsg.cmd) {
- status = nlFamilyOps->cmds[i].handler(irp, fileObject,
- inputBuffer, inputLength,
- outputBuffer, outputLength,
- replyLen);
+ if (nlFamilyOps->cmds[i].cmd == usrParamsCtx->ovsMsg->genlMsg.cmd) {
+ NetlinkCmdHandler *handler = nlFamilyOps->cmds[i].handler;
+ ASSERT(handler);
+ if (handler) {
+ status = handler(usrParamsCtx, replyLen);
+ }
break;
}
}
return status;
}
-
/*
* --------------------------------------------------------------------------
+ * Command Handler for 'OVS_CTRL_CMD_WIN_GET_PID'.
+ *
* Each handle on the device is assigned a unique PID when the handle is
* created. On platforms that support netlink natively, the PID is available
* to userspace when the netlink socket is created. However, without native
* --------------------------------------------------------------------------
*/
static NTSTATUS
-OvsGetPidCmdHandler(PIRP irp,
- PFILE_OBJECT fileObject,
- PVOID inputBuffer,
- UINT32 inputLength,
- PVOID outputBuffer,
- UINT32 outputLength,
+OvsGetPidCmdHandler(POVS_USER_PARAMS_CONTEXT usrParamsCtx,
UINT32 *replyLen)
{
- UNREFERENCED_PARAMETER(irp);
- UNREFERENCED_PARAMETER(fileObject);
- UNREFERENCED_PARAMETER(inputBuffer);
- UNREFERENCED_PARAMETER(inputLength);
+ POVS_MESSAGE msgIn = (POVS_MESSAGE)usrParamsCtx->inputBuffer;
+ POVS_MESSAGE msgOut = (POVS_MESSAGE)usrParamsCtx->outputBuffer;
- POVS_MESSAGE msgIn = (POVS_MESSAGE)inputBuffer;
- POVS_MESSAGE msgOut = (POVS_MESSAGE)outputBuffer;
-
- if (outputLength >= sizeof *msgOut) {
- POVS_OPEN_INSTANCE instance = (POVS_OPEN_INSTANCE)fileObject->FsContext;
+ if (usrParamsCtx->outputLength >= sizeof *msgOut) {
+ POVS_OPEN_INSTANCE instance =
+ (POVS_OPEN_INSTANCE)usrParamsCtx->ovsInstance;
RtlZeroMemory(msgOut, sizeof *msgOut);
msgOut->nlMsg.nlmsgSeq = msgIn->nlMsg.nlmsgSeq;
return STATUS_NDIS_INVALID_LENGTH;
}
- return NDIS_STATUS_SUCCESS;
+ return STATUS_SUCCESS;
+}
+
+/*
+ * --------------------------------------------------------------------------
+ * Utility function to fill up information about the datapath in a reply to
+ * userspace.
+ * Assumes that 'gOvsCtrlLock' lock is acquired.
+ * --------------------------------------------------------------------------
+ */
+static NTSTATUS
+OvsDpFillInfo(POVS_SWITCH_CONTEXT ovsSwitchContext,
+ POVS_MESSAGE msgIn,
+ PNL_BUFFER nlBuf)
+{
+ BOOLEAN writeOk;
+ OVS_MESSAGE msgOutTmp;
+ OVS_DATAPATH *datapath = &ovsSwitchContext->datapath;
+ PNL_MSG_HDR nlMsg;
+
+ ASSERT(NlBufAt(nlBuf, 0, 0) != 0 && NlBufRemLen(nlBuf) >= sizeof *msgIn);
+
+ msgOutTmp.nlMsg.nlmsgType = OVS_WIN_NL_DATAPATH_FAMILY_ID;
+ msgOutTmp.nlMsg.nlmsgFlags = 0; /* XXX: ? */
+ msgOutTmp.nlMsg.nlmsgSeq = msgIn->nlMsg.nlmsgSeq;
+ msgOutTmp.nlMsg.nlmsgPid = msgIn->nlMsg.nlmsgPid;
+
+ msgOutTmp.genlMsg.cmd = OVS_DP_CMD_GET;
+ msgOutTmp.genlMsg.version = nlDatapathFamilyOps.version;
+ msgOutTmp.genlMsg.reserved = 0;
+
+ msgOutTmp.ovsHdr.dp_ifindex = ovsSwitchContext->dpNo;
+
+ writeOk = NlMsgPutHead(nlBuf, (PCHAR)&msgOutTmp, sizeof msgOutTmp);
+ if (writeOk) {
+ writeOk = NlMsgPutTailString(nlBuf, OVS_DP_ATTR_NAME,
+ OVS_SYSTEM_DP_NAME);
+ }
+ if (writeOk) {
+ OVS_DP_STATS dpStats;
+
+ dpStats.n_hit = datapath->hits;
+ dpStats.n_missed = datapath->misses;
+ dpStats.n_lost = datapath->lost;
+ dpStats.n_flows = datapath->nFlows;
+ writeOk = NlMsgPutTailUnspec(nlBuf, OVS_DP_ATTR_STATS,
+ (PCHAR)&dpStats, sizeof dpStats);
+ }
+ nlMsg = (PNL_MSG_HDR)NlBufAt(nlBuf, 0, 0);
+ nlMsg->nlmsgLen = NlBufSize(nlBuf);
+
+ return writeOk ? STATUS_SUCCESS : STATUS_INVALID_BUFFER_SIZE;
+}
+
+/*
+ * --------------------------------------------------------------------------
+ * Handler for queueing an IRP used for event notification. The IRP is
+ * completed when a port state changes. STATUS_PENDING is returned on
+ * success. User mode keep a pending IRP at all times.
+ * --------------------------------------------------------------------------
+ */
+static NTSTATUS
+OvsPendEventCmdHandler(POVS_USER_PARAMS_CONTEXT usrParamsCtx,
+ UINT32 *replyLen)
+{
+ NDIS_STATUS status;
+
+ UNREFERENCED_PARAMETER(replyLen);
+
+ POVS_OPEN_INSTANCE instance =
+ (POVS_OPEN_INSTANCE)usrParamsCtx->ovsInstance;
+ POVS_MESSAGE msgIn = (POVS_MESSAGE)usrParamsCtx->inputBuffer;
+ OVS_EVENT_POLL poll;
+
+ poll.dpNo = msgIn->ovsHdr.dp_ifindex;
+ status = OvsWaitEventIoctl(usrParamsCtx->irp, instance->fileObject,
+ &poll, sizeof poll);
+ return status;
+}
+
+/*
+ * --------------------------------------------------------------------------
+ * Handler for the subscription for the event queue
+ * --------------------------------------------------------------------------
+ */
+static NTSTATUS
+OvsSubscribeEventCmdHandler(POVS_USER_PARAMS_CONTEXT usrParamsCtx,
+ UINT32 *replyLen)
+{
+ NDIS_STATUS status;
+ OVS_EVENT_SUBSCRIBE request;
+ BOOLEAN rc;
+ UINT8 join;
+ PNL_ATTR attrs[2];
+ const NL_POLICY policy[] = {
+ [OVS_NL_ATTR_MCAST_GRP] = {.type = NL_A_U32 },
+ [OVS_NL_ATTR_MCAST_JOIN] = {.type = NL_A_U8 },
+ };
+
+ UNREFERENCED_PARAMETER(replyLen);
+
+ POVS_OPEN_INSTANCE instance =
+ (POVS_OPEN_INSTANCE)usrParamsCtx->ovsInstance;
+ POVS_MESSAGE msgIn = (POVS_MESSAGE)usrParamsCtx->inputBuffer;
+
+ rc = NlAttrParse(&msgIn->nlMsg, sizeof (*msgIn),
+ NlMsgAttrsLen((PNL_MSG_HDR)msgIn), policy, attrs, 2);
+ if (!rc) {
+ status = STATUS_INVALID_PARAMETER;
+ goto done;
+ }
+
+ /* XXX Ignore the MC group for now */
+ join = NlAttrGetU8(attrs[OVS_NL_ATTR_MCAST_JOIN]);
+ request.dpNo = msgIn->ovsHdr.dp_ifindex;
+ request.subscribe = join;
+ request.mask = OVS_EVENT_MASK_ALL;
+
+ status = OvsSubscribeEventIoctl(instance->fileObject, &request,
+ sizeof request);
+done:
+ return status;
+}
+
+/*
+ * --------------------------------------------------------------------------
+ * Command Handler for 'OVS_DP_CMD_NEW'.
+ * --------------------------------------------------------------------------
+ */
+static NTSTATUS
+OvsNewDpCmdHandler(POVS_USER_PARAMS_CONTEXT usrParamsCtx,
+ UINT32 *replyLen)
+{
+ return HandleDpTransactionCommon(usrParamsCtx, replyLen);
+}
+
+/*
+ * --------------------------------------------------------------------------
+ * Command Handler for 'OVS_DP_CMD_GET'.
+ *
+ * The function handles both the dump based as well as the transaction based
+ * 'OVS_DP_CMD_GET' command. In the dump command, it handles the initial
+ * call to setup dump state, as well as subsequent calls to continue dumping
+ * data.
+ * --------------------------------------------------------------------------
+ */
+static NTSTATUS
+OvsGetDpCmdHandler(POVS_USER_PARAMS_CONTEXT usrParamsCtx,
+ UINT32 *replyLen)
+{
+ if (usrParamsCtx->devOp == OVS_TRANSACTION_DEV_OP) {
+ return HandleDpTransactionCommon(usrParamsCtx, replyLen);
+ } else {
+ return HandleGetDpDump(usrParamsCtx, replyLen);
+ }
+}
+
+/*
+ * --------------------------------------------------------------------------
+ * Function for handling the transaction based 'OVS_DP_CMD_GET' command.
+ * --------------------------------------------------------------------------
+ */
+static NTSTATUS
+HandleGetDpTransaction(POVS_USER_PARAMS_CONTEXT usrParamsCtx,
+ UINT32 *replyLen)
+{
+ return HandleDpTransactionCommon(usrParamsCtx, replyLen);
+}
+
+
+/*
+ * --------------------------------------------------------------------------
+ * Function for handling the dump-based 'OVS_DP_CMD_GET' command.
+ * --------------------------------------------------------------------------
+ */
+static NTSTATUS
+HandleGetDpDump(POVS_USER_PARAMS_CONTEXT usrParamsCtx,
+ UINT32 *replyLen)
+{
+ POVS_MESSAGE msgOut = (POVS_MESSAGE)usrParamsCtx->outputBuffer;
+ POVS_OPEN_INSTANCE instance =
+ (POVS_OPEN_INSTANCE)usrParamsCtx->ovsInstance;
+
+ if (usrParamsCtx->devOp == OVS_WRITE_DEV_OP) {
+ *replyLen = 0;
+ OvsSetupDumpStart(usrParamsCtx);
+ } else {
+ NL_BUFFER nlBuf;
+ NTSTATUS status;
+ POVS_MESSAGE msgIn = instance->dumpState.ovsMsg;
+
+ ASSERT(usrParamsCtx->devOp == OVS_READ_DEV_OP);
+
+ if (instance->dumpState.ovsMsg == NULL) {
+ ASSERT(FALSE);
+ return STATUS_INVALID_DEVICE_STATE;
+ }
+
+ /* Dump state must have been deleted after previous dump operation. */
+ ASSERT(instance->dumpState.index[0] == 0);
+ /* Output buffer has been validated while validating read dev op. */
+ ASSERT(msgOut != NULL && usrParamsCtx->outputLength >= sizeof *msgOut);
+
+ NlBufInit(&nlBuf, usrParamsCtx->outputBuffer,
+ usrParamsCtx->outputLength);
+
+ OvsAcquireCtrlLock();
+ if (!gOvsSwitchContext) {
+ /* Treat this as a dump done. */
+ OvsReleaseCtrlLock();
+ *replyLen = 0;
+ FreeUserDumpState(instance);
+ return STATUS_SUCCESS;
+ }
+ status = OvsDpFillInfo(gOvsSwitchContext, msgIn, &nlBuf);
+ OvsReleaseCtrlLock();
+
+ if (status != STATUS_SUCCESS) {
+ *replyLen = 0;
+ FreeUserDumpState(instance);
+ return status;
+ }
+
+ /* Increment the dump index. */
+ instance->dumpState.index[0] = 1;
+ *replyLen = msgOut->nlMsg.nlmsgLen;
+
+ /* Free up the dump state, since there's no more data to continue. */
+ FreeUserDumpState(instance);
+ }
+
+ return STATUS_SUCCESS;
+}
+
+
+/*
+ * --------------------------------------------------------------------------
+ * Command Handler for 'OVS_DP_CMD_SET'.
+ * --------------------------------------------------------------------------
+ */
+static NTSTATUS
+OvsSetDpCmdHandler(POVS_USER_PARAMS_CONTEXT usrParamsCtx,
+ UINT32 *replyLen)
+{
+ return HandleDpTransactionCommon(usrParamsCtx, replyLen);
+}
+
+/*
+ * --------------------------------------------------------------------------
+ * Function for handling transaction based 'OVS_DP_CMD_NEW', 'OVS_DP_CMD_GET'
+ * and 'OVS_DP_CMD_SET' commands.
+ *
+ * 'OVS_DP_CMD_NEW' is implemented to keep userspace code happy. Creation of a
+ * new datapath is not supported currently.
+ * --------------------------------------------------------------------------
+ */
+static NTSTATUS
+HandleDpTransactionCommon(POVS_USER_PARAMS_CONTEXT usrParamsCtx,
+ UINT32 *replyLen)
+{
+ POVS_MESSAGE msgIn = (POVS_MESSAGE)usrParamsCtx->inputBuffer;
+ POVS_MESSAGE msgOut = (POVS_MESSAGE)usrParamsCtx->outputBuffer;
+ NTSTATUS status = STATUS_SUCCESS;
+ NL_BUFFER nlBuf;
+ NL_ERROR nlError = NL_ERROR_SUCCESS;
+ static const NL_POLICY ovsDatapathSetPolicy[] = {
+ [OVS_DP_ATTR_NAME] = { .type = NL_A_STRING, .maxLen = IFNAMSIZ },
+ [OVS_DP_ATTR_UPCALL_PID] = { .type = NL_A_U32, .optional = TRUE },
+ [OVS_DP_ATTR_USER_FEATURES] = { .type = NL_A_U32, .optional = TRUE },
+ };
+ PNL_ATTR dpAttrs[ARRAY_SIZE(ovsDatapathSetPolicy)];
+
+ /* input buffer has been validated while validating write dev op. */
+ ASSERT(msgIn != NULL && usrParamsCtx->inputLength >= sizeof *msgIn);
+
+ /* Parse any attributes in the request. */
+ if (usrParamsCtx->ovsMsg->genlMsg.cmd == OVS_DP_CMD_SET ||
+ usrParamsCtx->ovsMsg->genlMsg.cmd == OVS_DP_CMD_NEW) {
+ if (!NlAttrParse((PNL_MSG_HDR)msgIn,
+ NLMSG_HDRLEN + GENL_HDRLEN + OVS_HDRLEN,
+ NlMsgAttrsLen((PNL_MSG_HDR)msgIn),
+ ovsDatapathSetPolicy, dpAttrs, ARRAY_SIZE(dpAttrs))) {
+ return STATUS_INVALID_PARAMETER;
+ }
+
+ /*
+ * XXX: Not clear at this stage if there's any role for the
+ * OVS_DP_ATTR_UPCALL_PID and OVS_DP_ATTR_USER_FEATURES attributes passed
+ * from userspace.
+ */
+
+ } else {
+ RtlZeroMemory(dpAttrs, sizeof dpAttrs);
+ }
+
+ /* Output buffer is optional for OVS_TRANSACTION_DEV_OP. */
+ if (msgOut == NULL || usrParamsCtx->outputLength < sizeof *msgOut) {
+ return STATUS_NDIS_INVALID_LENGTH;
+ }
+ NlBufInit(&nlBuf, usrParamsCtx->outputBuffer, usrParamsCtx->outputLength);
+
+ OvsAcquireCtrlLock();
+ if (dpAttrs[OVS_DP_ATTR_NAME] != NULL) {
+ if (!gOvsSwitchContext &&
+ !OvsCompareString(NlAttrGet(dpAttrs[OVS_DP_ATTR_NAME]),
+ OVS_SYSTEM_DP_NAME)) {
+ OvsReleaseCtrlLock();
+
+ /* Creation of new datapaths is not supported. */
+ if (usrParamsCtx->ovsMsg->genlMsg.cmd == OVS_DP_CMD_SET) {
+ nlError = NL_ERROR_NOTSUPP;
+ goto cleanup;
+ }
+
+ nlError = NL_ERROR_NODEV;
+ goto cleanup;
+ }
+ } else if ((UINT32)msgIn->ovsHdr.dp_ifindex != gOvsSwitchContext->dpNo) {
+ OvsReleaseCtrlLock();
+ nlError = NL_ERROR_NODEV;
+ goto cleanup;
+ }
+
+ if (usrParamsCtx->ovsMsg->genlMsg.cmd == OVS_DP_CMD_NEW) {
+ OvsReleaseCtrlLock();
+ nlError = NL_ERROR_EXIST;
+ goto cleanup;
+ }
+
+ status = OvsDpFillInfo(gOvsSwitchContext, msgIn, &nlBuf);
+ OvsReleaseCtrlLock();
+
+ *replyLen = NlBufSize(&nlBuf);
+
+cleanup:
+ if (nlError != NL_ERROR_SUCCESS) {
+ POVS_MESSAGE_ERROR msgError = (POVS_MESSAGE_ERROR)
+ usrParamsCtx->outputBuffer;
+
+ BuildErrorMsg(msgIn, msgError, nlError);
+ *replyLen = msgError->nlMsg.nlmsgLen;
+ }
+
+ return STATUS_SUCCESS;
+}
+
+
+NTSTATUS
+OvsSetupDumpStart(POVS_USER_PARAMS_CONTEXT usrParamsCtx)
+{
+ POVS_MESSAGE msgIn = (POVS_MESSAGE)usrParamsCtx->inputBuffer;
+ POVS_OPEN_INSTANCE instance =
+ (POVS_OPEN_INSTANCE)usrParamsCtx->ovsInstance;
+
+ /* input buffer has been validated while validating write dev op. */
+ ASSERT(msgIn != NULL && usrParamsCtx->inputLength >= sizeof *msgIn);
+
+ /* A write operation that does not indicate dump start is invalid. */
+ if ((msgIn->nlMsg.nlmsgFlags & NLM_F_DUMP) != NLM_F_DUMP) {
+ return STATUS_INVALID_PARAMETER;
+ }
+ /* XXX: Handle other NLM_F_* flags in the future. */
+
+ /*
+ * This operation should be setting up the dump state. If there's any
+ * previous state, clear it up so as to set it up afresh.
+ */
+ if (instance->dumpState.ovsMsg != NULL) {
+ FreeUserDumpState(instance);
+ }
+
+ return InitUserDumpState(instance, msgIn);
+}
+
+static VOID
+BuildMsgOut(POVS_MESSAGE msgIn, POVS_MESSAGE msgOut, UINT16 type,
+ UINT32 length, UINT16 flags)
+{
+ msgOut->nlMsg.nlmsgType = type;
+ msgOut->nlMsg.nlmsgFlags = flags;
+ msgOut->nlMsg.nlmsgSeq = msgIn->nlMsg.nlmsgSeq;
+ msgOut->nlMsg.nlmsgPid = msgIn->nlMsg.nlmsgPid;
+ msgOut->nlMsg.nlmsgLen = length;
+
+ msgOut->genlMsg.cmd = msgIn->genlMsg.cmd;
+ msgOut->genlMsg.version = msgIn->genlMsg.version;
+ msgOut->genlMsg.reserved = 0;
+}
+
+/*
+ * XXX: should move out these functions to a Netlink.c or to a OvsMessage.c
+ * or even make them inlined functions in Datapath.h. Can be done after the
+ * first sprint once we have more code to refactor.
+ */
+VOID
+BuildReplyMsgFromMsgIn(POVS_MESSAGE msgIn, POVS_MESSAGE msgOut, UINT16 flags)
+{
+ BuildMsgOut(msgIn, msgOut, msgIn->nlMsg.nlmsgType, sizeof(OVS_MESSAGE),
+ flags);
+}
+
+VOID
+BuildErrorMsg(POVS_MESSAGE msgIn, POVS_MESSAGE_ERROR msgOut, UINT errorCode)
+{
+ BuildMsgOut(msgIn, (POVS_MESSAGE)msgOut, NLMSG_ERROR,
+ sizeof(OVS_MESSAGE_ERROR), 0);
+
+ msgOut->errorMsg.error = errorCode;
+ msgOut->errorMsg.nlMsg = msgIn->nlMsg;
+}
+
+static NTSTATUS
+OvsCreateMsgFromVport(POVS_VPORT_ENTRY vport,
+ POVS_MESSAGE msgIn,
+ PVOID outBuffer,
+ UINT32 outBufLen,
+ int dpIfIndex)
+{
+ NL_BUFFER nlBuffer;
+ OVS_VPORT_FULL_STATS vportStats;
+ BOOLEAN ok;
+ OVS_MESSAGE msgOut;
+ PNL_MSG_HDR nlMsg;
+
+ NlBufInit(&nlBuffer, outBuffer, outBufLen);
+
+ BuildReplyMsgFromMsgIn(msgIn, &msgOut, NLM_F_MULTI);
+ msgOut.ovsHdr.dp_ifindex = dpIfIndex;
+
+ ok = NlMsgPutHead(&nlBuffer, (PCHAR)&msgOut, sizeof msgOut);
+ if (!ok) {
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ ok = NlMsgPutTailU32(&nlBuffer, OVS_VPORT_ATTR_PORT_NO, vport->portNo);
+ if (!ok) {
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ ok = NlMsgPutTailU32(&nlBuffer, OVS_VPORT_ATTR_TYPE, vport->ovsType);
+ if (!ok) {
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ ok = NlMsgPutTailString(&nlBuffer, OVS_VPORT_ATTR_NAME, vport->ovsName);
+ if (!ok) {
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ /*
+ * XXX: when we implement OVS_DP_ATTR_USER_FEATURES in datapath,
+ * we'll need to check the OVS_DP_F_VPORT_PIDS flag: if it is set,
+ * it means we have an array of pids, instead of a single pid.
+ * ATM we assume we have one pid only.
+ */
+
+ ok = NlMsgPutTailU32(&nlBuffer, OVS_VPORT_ATTR_UPCALL_PID,
+ vport->upcallPid);
+ if (!ok) {
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ /*stats*/
+ vportStats.rxPackets = vport->stats.rxPackets;
+ vportStats.rxBytes = vport->stats.rxBytes;
+ vportStats.txPackets = vport->stats.txPackets;
+ vportStats.txBytes = vport->stats.txBytes;
+ vportStats.rxErrors = vport->errStats.rxErrors;
+ vportStats.txErrors = vport->errStats.txErrors;
+ vportStats.rxDropped = vport->errStats.rxDropped;
+ vportStats.txDropped = vport->errStats.txDropped;
+
+ ok = NlMsgPutTailUnspec(&nlBuffer, OVS_VPORT_ATTR_STATS,
+ (PCHAR)&vportStats,
+ sizeof(OVS_VPORT_FULL_STATS));
+ if (!ok) {
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ /*
+ * XXX: when vxlan udp dest port becomes configurable, we will also need
+ * to add vport options
+ */
+
+ nlMsg = (PNL_MSG_HDR)NlBufAt(&nlBuffer, 0, 0);
+ nlMsg->nlmsgLen = NlBufSize(&nlBuffer);
+
+ return STATUS_SUCCESS;
+}
+
+static NTSTATUS
+OvsGetVportDumpNext(POVS_USER_PARAMS_CONTEXT usrParamsCtx,
+ UINT32 *replyLen)
+{
+ POVS_MESSAGE msgIn;
+ POVS_OPEN_INSTANCE instance =
+ (POVS_OPEN_INSTANCE)usrParamsCtx->ovsInstance;
+ LOCK_STATE_EX lockState;
+ UINT32 i = OVS_MAX_VPORT_ARRAY_SIZE;
+
+ /*
+ * XXX: this function shares some code with other dump command(s).
+ * In the future, we will need to refactor the dump functions
+ */
+
+ ASSERT(usrParamsCtx->devOp == OVS_READ_DEV_OP);
+
+ if (instance->dumpState.ovsMsg == NULL) {
+ ASSERT(FALSE);
+ return STATUS_INVALID_DEVICE_STATE;
+ }
+
+ /* Output buffer has been validated while validating read dev op. */
+ ASSERT(usrParamsCtx->outputBuffer != NULL);
+
+ msgIn = instance->dumpState.ovsMsg;
+
+ OvsAcquireCtrlLock();
+ if (!gOvsSwitchContext) {
+ /* Treat this as a dump done. */
+ OvsReleaseCtrlLock();
+ *replyLen = 0;
+ FreeUserDumpState(instance);
+ return STATUS_SUCCESS;
+ }
+
+ /*
+ * XXX: when we implement OVS_DP_ATTR_USER_FEATURES in datapath,
+ * we'll need to check the OVS_DP_F_VPORT_PIDS flag: if it is set,
+ * it means we have an array of pids, instead of a single pid.
+ * ATM we assume we have one pid only.
+ */
+ ASSERT(KeGetCurrentIrql() == DISPATCH_LEVEL);
+ NdisAcquireRWLockRead(gOvsSwitchContext->dispatchLock, &lockState,
+ NDIS_RWL_AT_DISPATCH_LEVEL);
+
+ if (gOvsSwitchContext->numVports > 0) {
+ /* inBucket: the bucket, used for lookup */
+ UINT32 inBucket = instance->dumpState.index[0];
+ /* inIndex: index within the given bucket, used for lookup */
+ UINT32 inIndex = instance->dumpState.index[1];
+ /* the bucket to be used for the next dump operation */
+ UINT32 outBucket = 0;
+ /* the index within the outBucket to be used for the next dump */
+ UINT32 outIndex = 0;
+
+ for (i = inBucket; i < OVS_MAX_VPORT_ARRAY_SIZE; i++) {
+ PLIST_ENTRY head, link;
+ head = &(gOvsSwitchContext->portHashArray[i]);
+ POVS_VPORT_ENTRY vport = NULL;
+
+ outIndex = 0;
+ LIST_FORALL(head, link) {
+
+ /*
+ * if one or more dumps were previously done on this same bucket,
+ * inIndex will be > 0, so we'll need to reply with the
+ * inIndex + 1 vport from the bucket.
+ */
+ if (outIndex >= inIndex) {
+ vport = CONTAINING_RECORD(link, OVS_VPORT_ENTRY, portLink);
+
+ if (vport->portNo != OVS_DPPORT_NUMBER_INVALID) {
+ OvsCreateMsgFromVport(vport, msgIn,
+ usrParamsCtx->outputBuffer,
+ usrParamsCtx->outputLength,
+ gOvsSwitchContext->dpNo);
+ ++outIndex;
+ break;
+ } else {
+ vport = NULL;
+ }
+ }
+
+ ++outIndex;
+ }
+
+ if (vport) {
+ break;
+ }
+
+ /*
+ * if no vport was found above, check the next bucket, beginning
+ * with the first (i.e. index 0) elem from within that bucket
+ */
+ inIndex = 0;
+ }
+
+ outBucket = i;
+
+ /* XXX: what about NLMSG_DONE (as msg type)? */
+ instance->dumpState.index[0] = outBucket;
+ instance->dumpState.index[1] = outIndex;
+ }
+
+ NdisReleaseRWLock(gOvsSwitchContext->dispatchLock, &lockState);
+
+ OvsReleaseCtrlLock();
+
+ /* if i < OVS_MAX_VPORT_ARRAY_SIZE => vport was found */
+ if (i < OVS_MAX_VPORT_ARRAY_SIZE) {
+ POVS_MESSAGE msgOut = (POVS_MESSAGE)usrParamsCtx->outputBuffer;
+ *replyLen = msgOut->nlMsg.nlmsgLen;
+ } else {
+ /*
+ * if i >= OVS_MAX_VPORT_ARRAY_SIZE => vport was not found =>
+ * it's dump done
+ */
+ *replyLen = 0;
+ /* Free up the dump state, since there's no more data to continue. */
+ FreeUserDumpState(instance);
+ }
+
+ return STATUS_SUCCESS;
}
+static NTSTATUS
+OvsGetVport(POVS_USER_PARAMS_CONTEXT usrParamsCtx,
+ UINT32 *replyLen)
+{
+ NTSTATUS status = STATUS_SUCCESS;
+ LOCK_STATE_EX lockState;
+
+ POVS_MESSAGE msgIn = (POVS_MESSAGE)usrParamsCtx->inputBuffer;
+ POVS_MESSAGE msgOut = (POVS_MESSAGE)usrParamsCtx->outputBuffer;
+ POVS_VPORT_ENTRY vport = NULL;
+ NL_ERROR nlError = NL_ERROR_SUCCESS;
+
+ static const NL_POLICY ovsVportPolicy[] = {
+ [OVS_VPORT_ATTR_PORT_NO] = { .type = NL_A_U32, .optional = TRUE },
+ [OVS_VPORT_ATTR_NAME] = { .type = NL_A_STRING,
+ .minLen = 2,
+ .maxLen = IFNAMSIZ,
+ .optional = TRUE},
+ };
+ PNL_ATTR vportAttrs[ARRAY_SIZE(ovsVportPolicy)];
+
+ /* input buffer has been validated while validating write dev op. */
+ ASSERT(usrParamsCtx->inputBuffer != NULL);
+
+ if (!NlAttrParse((PNL_MSG_HDR)msgIn,
+ NLMSG_HDRLEN + GENL_HDRLEN + OVS_HDRLEN,
+ NlMsgAttrsLen((PNL_MSG_HDR)msgIn),
+ ovsVportPolicy, vportAttrs, ARRAY_SIZE(vportAttrs))) {
+ return STATUS_INVALID_PARAMETER;
+ }
+
+ if (msgOut == NULL || usrParamsCtx->outputLength < sizeof *msgOut) {
+ return STATUS_INVALID_BUFFER_SIZE;
+ }
+
+ OvsAcquireCtrlLock();
+ if (!gOvsSwitchContext) {
+ OvsReleaseCtrlLock();
+ return STATUS_INVALID_PARAMETER;
+ }
+ OvsReleaseCtrlLock();
+
+ NdisAcquireRWLockRead(gOvsSwitchContext->dispatchLock, &lockState, 0);
+ if (vportAttrs[OVS_VPORT_ATTR_NAME] != NULL) {
+ vport = OvsFindVportByOvsName(gOvsSwitchContext,
+ NlAttrGet(vportAttrs[OVS_VPORT_ATTR_NAME]),
+ NlAttrGetSize(vportAttrs[OVS_VPORT_ATTR_NAME]) - 1);
+ } else if (vportAttrs[OVS_VPORT_ATTR_PORT_NO] != NULL) {
+ vport = OvsFindVportByPortNo(gOvsSwitchContext,
+ NlAttrGetU32(vportAttrs[OVS_VPORT_ATTR_PORT_NO]));
+ } else {
+ nlError = NL_ERROR_INVAL;
+ NdisReleaseRWLock(gOvsSwitchContext->dispatchLock, &lockState);
+ goto Cleanup;
+ }
+
+ if (!vport) {
+ nlError = NL_ERROR_NODEV;
+ NdisReleaseRWLock(gOvsSwitchContext->dispatchLock, &lockState);
+ goto Cleanup;
+ }
+
+ status = OvsCreateMsgFromVport(vport, msgIn, usrParamsCtx->outputBuffer,
+ usrParamsCtx->outputLength,
+ gOvsSwitchContext->dpNo);
+ NdisReleaseRWLock(gOvsSwitchContext->dispatchLock, &lockState);
+
+ *replyLen = msgOut->nlMsg.nlmsgLen;
+
+Cleanup:
+ if (nlError != NL_ERROR_SUCCESS) {
+ POVS_MESSAGE_ERROR msgError = (POVS_MESSAGE_ERROR)
+ usrParamsCtx->outputBuffer;
+
+ BuildErrorMsg(msgIn, msgError, nlError);
+ *replyLen = msgError->nlMsg.nlmsgLen;
+ }
+
+ return STATUS_SUCCESS;
+}
+
+/*
+ * --------------------------------------------------------------------------
+ * Handler for the get vport command. The function handles the initial call to
+ * setup the dump state, as well as subsequent calls to continue dumping data.
+ * --------------------------------------------------------------------------
+*/
+static NTSTATUS
+OvsGetVportCmdHandler(POVS_USER_PARAMS_CONTEXT usrParamsCtx,
+ UINT32 *replyLen)
+{
+ *replyLen = 0;
+
+ switch (usrParamsCtx->devOp)
+ {
+ case OVS_WRITE_DEV_OP:
+ return OvsSetupDumpStart(usrParamsCtx);
+
+ case OVS_READ_DEV_OP:
+ return OvsGetVportDumpNext(usrParamsCtx, replyLen);
+
+ case OVS_TRANSACTION_DEV_OP:
+ return OvsGetVport(usrParamsCtx, replyLen);
+
+ default:
+ return STATUS_INVALID_DEVICE_REQUEST;
+ }
+
+}
/*
* --------------------------------------------------------------------------
return STATUS_SUCCESS;
}
+/*
+ * --------------------------------------------------------------------------
+ * Utility function to fill up information about the state of a port in a reply
+ * to* userspace.
+ * Assumes that 'gOvsCtrlLock' lock is acquired.
+ * --------------------------------------------------------------------------
+ */
+static NTSTATUS
+OvsPortFillInfo(POVS_USER_PARAMS_CONTEXT usrParamsCtx,
+ POVS_EVENT_ENTRY eventEntry,
+ PNL_BUFFER nlBuf)
+{
+ NTSTATUS status;
+ BOOLEAN rc;
+ OVS_MESSAGE msgOutTmp;
+ PNL_MSG_HDR nlMsg;
+ POVS_VPORT_ENTRY vport;
+
+ ASSERT(NlBufAt(nlBuf, 0, 0) != 0 && nlBuf->bufRemLen >= sizeof msgOutTmp);
+
+ msgOutTmp.nlMsg.nlmsgType = OVS_WIN_NL_VPORT_FAMILY_ID;
+ msgOutTmp.nlMsg.nlmsgFlags = 0; /* XXX: ? */
+
+ /* driver intiated messages should have zerp seq number*/
+ msgOutTmp.nlMsg.nlmsgSeq = 0;
+ msgOutTmp.nlMsg.nlmsgPid = usrParamsCtx->ovsInstance->pid;
+
+ msgOutTmp.genlMsg.version = nlVportFamilyOps.version;
+ msgOutTmp.genlMsg.reserved = 0;
+
+ /* we don't have netdev yet, treat link up/down a adding/removing a port*/
+ if (eventEntry->status & (OVS_EVENT_LINK_UP | OVS_EVENT_CONNECT)) {
+ msgOutTmp.genlMsg.cmd = OVS_VPORT_CMD_NEW;
+ } else if (eventEntry->status &
+ (OVS_EVENT_LINK_DOWN | OVS_EVENT_DISCONNECT)) {
+ msgOutTmp.genlMsg.cmd = OVS_VPORT_CMD_DEL;
+ } else {
+ ASSERT(FALSE);
+ return STATUS_UNSUCCESSFUL;
+ }
+ msgOutTmp.ovsHdr.dp_ifindex = gOvsSwitchContext->dpNo;
+
+ rc = NlMsgPutHead(nlBuf, (PCHAR)&msgOutTmp, sizeof msgOutTmp);
+ if (!rc) {
+ status = STATUS_INVALID_BUFFER_SIZE;
+ goto cleanup;
+ }
+
+ vport = OvsFindVportByPortNo(gOvsSwitchContext, eventEntry->portNo);
+ if (!vport) {
+ status = STATUS_DEVICE_DOES_NOT_EXIST;
+ goto cleanup;
+ }
+
+ rc = NlMsgPutTailU32(nlBuf, OVS_VPORT_ATTR_PORT_NO, eventEntry->portNo) ||
+ NlMsgPutTailU32(nlBuf, OVS_VPORT_ATTR_TYPE, vport->ovsType) ||
+ NlMsgPutTailString(nlBuf, OVS_VPORT_ATTR_NAME, vport->ovsName);
+ if (!rc) {
+ status = STATUS_INVALID_BUFFER_SIZE;
+ goto cleanup;
+ }
+
+ /* XXXX Should we add the port stats attributes?*/
+ nlMsg = (PNL_MSG_HDR)NlBufAt(nlBuf, 0, 0);
+ nlMsg->nlmsgLen = NlBufSize(nlBuf);
+ status = STATUS_SUCCESS;
+
+cleanup:
+ return status;
+}
+
+
+/*
+ * --------------------------------------------------------------------------
+ * Handler for reading events from the driver event queue. This handler is
+ * executed when user modes issues a socket receive on a socket assocaited
+ * with the MC group for events.
+ * XXX user mode should read multiple events in one system call
+ * --------------------------------------------------------------------------
+ */
+static NTSTATUS
+OvsReadEventCmdHandler(POVS_USER_PARAMS_CONTEXT usrParamsCtx,
+ UINT32 *replyLen)
+{
+#ifdef DBG
+ POVS_MESSAGE msgOut = (POVS_MESSAGE)usrParamsCtx->outputBuffer;
+ POVS_OPEN_INSTANCE instance =
+ (POVS_OPEN_INSTANCE)usrParamsCtx->ovsInstance;
+#endif
+ NL_BUFFER nlBuf;
+ NTSTATUS status;
+ OVS_EVENT_ENTRY eventEntry;
+
+ ASSERT(usrParamsCtx->devOp == OVS_READ_DEV_OP);
+
+ /* Should never read events with a dump socket */
+ ASSERT(instance->dumpState.ovsMsg == NULL);
+
+ /* Must have an event queue */
+ ASSERT(instance->eventQueue != NULL);
+
+ /* Output buffer has been validated while validating read dev op. */
+ ASSERT(msgOut != NULL && usrParamsCtx->outputLength >= sizeof *msgOut);
+
+ NlBufInit(&nlBuf, usrParamsCtx->outputBuffer, usrParamsCtx->outputLength);
+
+ OvsAcquireCtrlLock();
+ if (!gOvsSwitchContext) {
+ status = STATUS_SUCCESS;
+ goto cleanup;
+ }
+
+ /* remove an event entry from the event queue */
+ status = OvsRemoveEventEntry(usrParamsCtx->ovsInstance, &eventEntry);
+ if (status != STATUS_SUCCESS) {
+ goto cleanup;
+ }
+
+ status = OvsPortFillInfo(usrParamsCtx, &eventEntry, &nlBuf);
+ if (status == NDIS_STATUS_SUCCESS) {
+ *replyLen = NlBufSize(&nlBuf);
+ }
+
+cleanup:
+ OvsReleaseCtrlLock();
+ return status;
+}
#endif /* OVS_USE_NL_INTERFACE */
projects / cascardo / ovs.git / blobdiff