This change includes the following:
[1] Handler for subscribe/unsubscribe to a packet queue associated with a
socket pid.
[2] Allocation of per socket packet queue on a packet subscription.
[3] Removal of static allocated queues.
[4] Freeing the packet queue (on user mode process termination).
Signed-off-by: Eitan Eliahu <[email protected]>
---
datapath-windows/include/OvsDpInterfaceExt.h | 7 +-
datapath-windows/ovsext/Datapath.c | 66 ++++++++++++++++++-
datapath-windows/ovsext/Datapath.h | 6 +-
datapath-windows/ovsext/Driver.c | 1 +
datapath-windows/ovsext/Event.c | 3 +-
datapath-windows/ovsext/Ioctl.c | 2 -
datapath-windows/ovsext/User.c | 98 +++++++++-------------------
datapath-windows/ovsext/User.h | 20 +++---
8 files changed, 115 insertions(+), 88 deletions(-)
diff --git a/datapath-windows/include/OvsDpInterfaceExt.h
b/datapath-windows/include/OvsDpInterfaceExt.h
index e9faecc..1e8a42d 100644
--- a/datapath-windows/include/OvsDpInterfaceExt.h
+++ b/datapath-windows/include/OvsDpInterfaceExt.h
@@ -78,6 +78,7 @@ enum ovs_win_control_cmd {
OVS_CTRL_CMD_WIN_GET_PID,
OVS_CTRL_CMD_WIN_PEND_REQ,
OVS_CTRL_CMD_MC_SUBSCRIBE_REQ,
+ OVS_CTRL_CMD_PACKET_SUBSCRIBE_REQ,
/* This command is logically belong to the Vport family */
OVS_CTRL_CMD_EVENT_NOTIFY
@@ -85,8 +86,10 @@ enum ovs_win_control_cmd {
/* NL Attributes for joining/unjoining an MC group */
enum ovs_nl_mcast_attr {
- OVS_NL_ATTR_MCAST_GRP, /* (UINT32) Join an MC group */
- OVS_NL_ATTR_MCAST_JOIN, /* (UINT8) 1/0 - Join/Unjoin */
+ OVS_NL_ATTR_MCAST_GRP, /* (UINT32) Join an MC group */
+ OVS_NL_ATTR_MCAST_JOIN, /* (UINT8) 1/0 - Join/Unjoin */
+ OVS_NL_ATTR_PACKET_SUBSCRIBE, /* (UNINT8): 1/0 - subscribe/unsubscribe */
+ OVS_NL_ATTR_PACKET_PID, /* (UNINT32) netlink PID to receive upcalls
*/
__OVS_NL_ATTR_CTRL_MAX
};
#define OVS_WIN_CONTROL_ATTR_MAX (__OVS_NL_ATTR_CTRL_MAX - 1)
diff --git a/datapath-windows/ovsext/Datapath.c
b/datapath-windows/ovsext/Datapath.c
index 93ff8b8..1ede944 100644
--- a/datapath-windows/ovsext/Datapath.c
+++ b/datapath-windows/ovsext/Datapath.c
@@ -23,6 +23,8 @@
#if defined OVS_USE_NL_INTERFACE && OVS_USE_NL_INTERFACE == 1
#include "precomp.h"
+#include "Switch.h"
+#include "User.h"
#include "Datapath.h"
#include "Jhash.h"
#include "Switch.h"
@@ -90,6 +92,7 @@ typedef struct _NETLINK_FAMILY {
static NetlinkCmdHandler OvsGetPidCmdHandler,
OvsPendEventCmdHandler,
OvsSubscribeEventCmdHandler,
+ OvsSubscribePacketCmdHandler,
OvsReadEventCmdHandler,
OvsNewDpCmdHandler,
OvsGetDpCmdHandler,
@@ -132,6 +135,11 @@ NETLINK_CMD nlControlFamilyCmdOps[] = {
.supportedDevOp = OVS_WRITE_DEV_OP,
.validateDpIndex = TRUE,
},
+ { .cmd = OVS_CTRL_CMD_PACKET_SUBSCRIBE_REQ,
+ .handler = OvsSubscribePacketCmdHandler,
+ .supportedDevOp = OVS_WRITE_DEV_OP,
+ .validateDpIndex = TRUE,
+ },
{ .cmd = OVS_CTRL_CMD_EVENT_NOTIFY,
.handler = OvsReadEventCmdHandler,
.supportedDevOp = OVS_READ_EVENT_DEV_OP,
@@ -338,7 +346,6 @@ OvsInit()
gOvsCtrlLock = &ovsCtrlLockObj;
NdisAllocateSpinLock(gOvsCtrlLock);
OvsInitEventQueue();
- OvsUserInit();
}
VOID
@@ -349,7 +356,6 @@ OvsCleanup()
NdisFreeSpinLock(gOvsCtrlLock);
gOvsCtrlLock = NULL;
}
- OvsUserCleanup();
}
VOID
@@ -1061,7 +1067,7 @@ OvsSubscribeEventCmdHandler(POVS_USER_PARAMS_CONTEXT
usrParamsCtx,
POVS_MESSAGE msgIn = (POVS_MESSAGE)usrParamsCtx->inputBuffer;
rc = NlAttrParse(&msgIn->nlMsg, sizeof (*msgIn),
- NlMsgAttrsLen((PNL_MSG_HDR)msgIn), policy, attrs, 2);
+ NlMsgAttrsLen((PNL_MSG_HDR)msgIn), policy, attrs, ARRAY_SIZE(attrs));
if (!rc) {
status = STATUS_INVALID_PARAMETER;
goto done;
@@ -1960,7 +1966,9 @@ OvsSetVportCmdHandler(POVS_USER_PARAMS_CONTEXT
usrParamsCtx,
NdisAcquireRWLockWrite(gOvsSwitchContext->dispatchLock, &lockState, 0);
if (vportAttrs[OVS_VPORT_ATTR_NAME] != NULL) {
PSTR portName = NlAttrGet(vportAttrs[OVS_VPORT_ATTR_NAME]);
+#if DBG
UINT32 portNameLen = NlAttrGetSize(vportAttrs[OVS_VPORT_ATTR_NAME]);
+#endif
/* the port name is expected to be null-terminated */
ASSERT(portName[portNameLen - 1] == '\0');
@@ -2291,4 +2299,56 @@ cleanup:
OvsReleaseCtrlLock();
return status;
}
+
+
+/*
+ * --------------------------------------------------------------------------
+ * Handler for the subscription for a packet queue
+ * --------------------------------------------------------------------------
+ */
+static NTSTATUS
+OvsSubscribePacketCmdHandler(POVS_USER_PARAMS_CONTEXT usrParamsCtx,
+ UINT32 *replyLen)
+{
+ NDIS_STATUS status;
+ BOOLEAN rc;
+ UINT8 join;
+ UINT32 pid;
+ PNL_ATTR attrs[2];
+ const NL_POLICY policy[] = {
+ [OVS_NL_ATTR_PACKET_PID] = {.type = NL_A_U32 },
+ [OVS_NL_ATTR_PACKET_SUBSCRIBE] = {.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, ARRAY_SIZE(attrs));
+ if (!rc) {
+ status = STATUS_INVALID_PARAMETER;
+ goto done;
+ }
+
+ join = NlAttrGetU8(attrs[OVS_NL_ATTR_PACKET_PID]);
+ pid = NlAttrGetU32(attrs[OVS_NL_ATTR_PACKET_PID]);
+
+ /* The socket subscribed with must be the same socket we perform receive*/
+ ASSERT(pid == instance->pid);
+
+ status = OvsSubscribeDpIoctl(instance, pid, join);
+
+ /*
+ * XXX Need to add this instance to a global data structure
+ * which hold all packet based instances. The data structure (hash)
+ * should be searched through the pid field of the instance for
+ * placing the missed packet into the correct queue
+ */
+done:
+ return status;
+}
+
#endif /* OVS_USE_NL_INTERFACE */
diff --git a/datapath-windows/ovsext/Datapath.h
b/datapath-windows/ovsext/Datapath.h
index b9c7417..f5105a3 100644
--- a/datapath-windows/ovsext/Datapath.h
+++ b/datapath-windows/ovsext/Datapath.h
@@ -51,6 +51,10 @@ typedef struct _OVS_DEVICE_EXTENSION {
INT pidCount;
} OVS_DEVICE_EXTENSION, *POVS_DEVICE_EXTENSION;
+// forward declaration
+typedef struct _OVS_USER_PACKET_QUEUE OVS_USER_PACKET_QUEUE,
+ *POVS_USER_PACKET_QUEUE;
+
/*
* Private context for each handle on the device.
*/
@@ -58,7 +62,7 @@ typedef struct _OVS_OPEN_INSTANCE {
UINT32 cookie;
PFILE_OBJECT fileObject;
PVOID eventQueue;
- PVOID packetQueue;
+ POVS_USER_PACKET_QUEUE packetQueue;
UINT32 pid;
/*
diff --git a/datapath-windows/ovsext/Driver.c b/datapath-windows/ovsext/Driver.c
index 79d2edf..0a9c35a 100644
--- a/datapath-windows/ovsext/Driver.c
+++ b/datapath-windows/ovsext/Driver.c
@@ -16,6 +16,7 @@
#include "precomp.h"
#include "Switch.h"
+#include "User.h"
#include "Datapath.h"
#ifdef OVS_DBG_MOD
diff --git a/datapath-windows/ovsext/Event.c b/datapath-windows/ovsext/Event.c
index d80f3fd..656f719 100644
--- a/datapath-windows/ovsext/Event.c
+++ b/datapath-windows/ovsext/Event.c
@@ -16,8 +16,9 @@
#include "precomp.h"
-#include "Datapath.h"
#include "Switch.h"
+#include "User.h"
+#include "Datapath.h"
#include "Vport.h"
#include "Event.h"
diff --git a/datapath-windows/ovsext/Ioctl.c b/datapath-windows/ovsext/Ioctl.c
index 655925b..304310d 100644
--- a/datapath-windows/ovsext/Ioctl.c
+++ b/datapath-windows/ovsext/Ioctl.c
@@ -109,7 +109,6 @@ OvsInit()
{
OvsInitIoctl();
OvsInitEventQueue();
- OvsUserInit();
}
VOID
@@ -117,7 +116,6 @@ OvsCleanup()
{
OvsCleanupEventQueue();
OvsCleanupIoctl();
- OvsUserCleanup();
}
VOID
diff --git a/datapath-windows/ovsext/User.c b/datapath-windows/ovsext/User.c
index f24c4e3..b39a7a9 100644
--- a/datapath-windows/ovsext/User.c
+++ b/datapath-windows/ovsext/User.c
@@ -22,11 +22,11 @@
#include "precomp.h"
-#include "Datapath.h"
#include "Switch.h"
#include "Vport.h"
#include "Event.h"
#include "User.h"
+#include "Datapath.h"
#include "PacketIO.h"
#include "Checksum.h"
#include "NetProto.h"
@@ -39,8 +39,6 @@
#define OVS_DBG_MOD OVS_DBG_USER
#include "Debug.h"
-OVS_USER_PACKET_QUEUE ovsPacketQueues[OVS_MAX_NUM_PACKET_QUEUES];
-
POVS_PACKET_QUEUE_ELEM OvsGetNextPacket(POVS_OPEN_INSTANCE instance);
extern PNDIS_SPIN_LOCK gOvsCtrlLock;
extern POVS_SWITCH_CONTEXT gOvsSwitchContext;
@@ -50,34 +48,6 @@ static VOID _MapNlAttrToOvsPktExec(PNL_ATTR *nlAttrs,
PNL_ATTR *keyAttrs,
OvsPacketExecute *execute);
extern NL_POLICY nlFlowKeyPolicy[];
-NTSTATUS
-OvsUserInit()
-{
- UINT32 i;
- POVS_USER_PACKET_QUEUE queue;
- for (i = 0; i < OVS_MAX_NUM_PACKET_QUEUES; i++) {
- queue = &ovsPacketQueues[i];
- RtlZeroMemory(queue, sizeof (*queue));
- InitializeListHead(&queue->packetList);
- NdisAllocateSpinLock(&queue->queueLock);
- }
- return STATUS_SUCCESS;
-}
-
-VOID
-OvsUserCleanup()
-{
- UINT32 i;
- POVS_USER_PACKET_QUEUE queue;
- for (i = 0; i < OVS_MAX_NUM_PACKET_QUEUES; i++) {
- queue = &ovsPacketQueues[i];
- ASSERT(IsListEmpty(&queue->packetList));
- ASSERT(queue->instance == NULL);
- ASSERT(queue->pendingIrp == NULL);
- NdisFreeSpinLock(&queue->queueLock);
- }
-}
-
static VOID
OvsPurgePacketQueue(POVS_USER_PACKET_QUEUE queue,
POVS_OPEN_INSTANCE instance)
@@ -105,7 +75,6 @@ OvsPurgePacketQueue(POVS_USER_PACKET_QUEUE queue,
}
}
-
VOID
OvsCleanupPacketQueue(POVS_OPEN_INSTANCE instance)
{
@@ -120,8 +89,11 @@ OvsCleanupPacketQueue(POVS_OPEN_INSTANCE instance)
if (queue) {
PDRIVER_CANCEL cancelRoutine;
NdisAcquireSpinLock(&queue->queueLock);
+ ASSERT(queue->instance == instance);
+ /* XXX Should not happen */
if (queue->instance != instance) {
NdisReleaseSpinLock(&queue->queueLock);
+ NdisFreeSpinLock(&queue->queueLock);
return;
}
@@ -130,7 +102,6 @@ OvsCleanupPacketQueue(POVS_OPEN_INSTANCE instance)
queue->numPackets = 0;
}
queue->instance = NULL;
- queue->queueId = OVS_MAX_NUM_PACKET_QUEUES;
instance->packetQueue = NULL;
irp = queue->pendingIrp;
queue->pendingIrp = NULL;
@@ -141,6 +112,7 @@ OvsCleanupPacketQueue(POVS_OPEN_INSTANCE instance)
}
}
NdisReleaseSpinLock(&queue->queueLock);
+ NdisFreeSpinLock(&queue->queueLock);
}
LIST_FORALL_SAFE(&tmp, link, next) {
RemoveEntryList(link);
@@ -150,44 +122,38 @@ OvsCleanupPacketQueue(POVS_OPEN_INSTANCE instance)
if (irp) {
OvsCompleteIrpRequest(irp, 0, STATUS_SUCCESS);
}
+ if (queue) {
+ OvsFreeMemory(queue);
+ }
}
NTSTATUS
-OvsSubscribeDpIoctl(PFILE_OBJECT fileObject,
- PVOID inputBuffer,
- UINT32 inputLength)
+OvsSubscribeDpIoctl(PVOID instanceP,
+ UINT32 pid,
+ UINT8 join)
{
- POVS_OPEN_INSTANCE instance = (POVS_OPEN_INSTANCE)fileObject->FsContext;
- UINT32 queueId;
POVS_USER_PACKET_QUEUE queue;
- if (inputLength < sizeof (UINT32)) {
- return STATUS_INVALID_PARAMETER;
- }
- queueId = *(UINT32 *)inputBuffer;
- if (instance->packetQueue && queueId >= OVS_MAX_NUM_PACKET_QUEUES) {
- /*
- * unsubscribe
- */
+ POVS_OPEN_INSTANCE instance = (POVS_OPEN_INSTANCE)instanceP;
+
+ if (instance->packetQueue && !join) {
+ /* unsubscribe */
OvsCleanupPacketQueue(instance);
- } else if (instance->packetQueue == NULL &&
- queueId < OVS_MAX_NUM_PACKET_QUEUES) {
- queue = &ovsPacketQueues[queueId];
- NdisAcquireSpinLock(&queue->queueLock);
- if (ovsPacketQueues[queueId].instance) {
- if (ovsPacketQueues[queueId].instance != instance) {
- NdisReleaseSpinLock(&queue->queueLock);
- return STATUS_INSUFFICIENT_RESOURCES;
- } else {
- NdisReleaseSpinLock(&queue->queueLock);
- return STATUS_SUCCESS;
- }
+ } else if (instance->packetQueue == NULL && join) {
+ queue = (POVS_USER_PACKET_QUEUE) OvsAllocateMemory(sizeof *queue);
+ if (queue == NULL) {
+ return STATUS_NO_MEMORY;
}
- queue->queueId = queueId;
+ instance->packetQueue = queue;
+ RtlZeroMemory(queue, sizeof (*queue));
+ NdisAllocateSpinLock(&queue->queueLock);
+ NdisAcquireSpinLock(&queue->queueLock);
+ InitializeListHead(&queue->packetList);
+ queue->pid = pid;
queue->instance = instance;
instance->packetQueue = queue;
- ASSERT(IsListEmpty(&queue->packetList));
NdisReleaseSpinLock(&queue->queueLock);
} else {
+ /* user mode should call only once for subscribe */
return STATUS_INVALID_PARAMETER;
}
return STATUS_SUCCESS;
@@ -624,14 +590,12 @@ OvsGetNextPacket(POVS_OPEN_INSTANCE instance)
POVS_USER_PACKET_QUEUE
-OvsGetQueue(UINT32 queueId)
+OvsGetQueue(UINT32 pid)
{
- POVS_USER_PACKET_QUEUE queue;
- if (queueId >= OVS_MAX_NUM_PACKET_QUEUES) {
- return NULL;
- }
- queue = &ovsPacketQueues[queueId];
- return queue->instance != NULL ? queue : NULL;
+ /* XXX To be implementd. Return the queue assoiated with the pid*/
+ UNREFERENCED_PARAMETER(pid);
+ ASSERT(FALSE);
+ return NULL;
}
VOID
diff --git a/datapath-windows/ovsext/User.h b/datapath-windows/ovsext/User.h
index 550915a..0c18e2f 100644
--- a/datapath-windows/ovsext/User.h
+++ b/datapath-windows/ovsext/User.h
@@ -21,6 +21,7 @@
#ifndef __USER_H_
#define __USER_H_ 1
+
#include "Datapath.h"
/*
@@ -28,7 +29,6 @@
* more than 32 queues for processing packets to
* userspace
*/
-#define OVS_MAX_NUM_PACKET_QUEUES 32
#define OVS_DEFAULT_PACKET_QUEUE 1
#define OVS_MAX_PACKET_QUEUE_LEN 4096
@@ -40,7 +40,7 @@
#define OVS_MAX_PACKETS_PER_TUNNEL 1024
typedef struct _OVS_USER_PACKET_QUEUE {
- UINT32 queueId;
+ UINT32 pid;
UINT32 numPackets;
LIST_ENTRY packetList;
PVOID instance;
@@ -67,10 +67,6 @@ typedef struct _OVS_USER_STATS {
UINT32 l4Csum;
} OVS_USER_STATS, *POVS_USER_STATS;
-
-NTSTATUS OvsUserInit();
-VOID OvsUserCleanup();
-
VOID OvsCleanupPacketQueue(struct _OVS_OPEN_INSTANCE *instance);
POVS_PACKET_QUEUE_ELEM OvsCreateQueueNlPacket(PVOID userData,
@@ -96,14 +92,14 @@ NTSTATUS OvsCreateAndAddPackets(PVOID userData,
LIST_ENTRY *list,
UINT32 *num);
-NTSTATUS OvsSubscribeDpIoctl(PFILE_OBJECT fileObject,
- PVOID inputBuffer,
- UINT32 inputLength);
+NTSTATUS OvsSubscribeDpIoctl(PVOID instanceP,
+ UINT32 pid,
+ UINT8 join);
NTSTATUS OvsReadDpIoctl(PFILE_OBJECT fileObject,
- PVOID outputBuffer,
- UINT32 outputLength,
- UINT32 *replyLen);
+ PVOID outputBuffer,
+ UINT32 outputLength,
+ UINT32 *replyLen);
NTSTATUS OvsExecuteDpIoctl(OvsPacketExecute *execute);
NTSTATUS OvsPurgeDpIoctl(PFILE_OBJECT fileObject);
--
1.9.4.msysgit.0
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