#ifndef _CHANNEL_MGMT_H_
#define _CHANNEL_MGMT_H_
-#include "include/osd.h"
-#include "include/List.h"
+#include <linux/list.h>
#include "RingBuffer.h"
+#include "VmbusChannelInterface.h"
+#include "VmbusPacketFormat.h"
+
+/* Version 1 messages */
+enum vmbus_channel_message_type {
+ ChannelMessageInvalid = 0,
+ ChannelMessageOfferChannel = 1,
+ ChannelMessageRescindChannelOffer = 2,
+ ChannelMessageRequestOffers = 3,
+ ChannelMessageAllOffersDelivered = 4,
+ ChannelMessageOpenChannel = 5,
+ ChannelMessageOpenChannelResult = 6,
+ ChannelMessageCloseChannel = 7,
+ ChannelMessageGpadlHeader = 8,
+ ChannelMessageGpadlBody = 9,
+ ChannelMessageGpadlCreated = 10,
+ ChannelMessageGpadlTeardown = 11,
+ ChannelMessageGpadlTorndown = 12,
+ ChannelMessageRelIdReleased = 13,
+ ChannelMessageInitiateContact = 14,
+ ChannelMessageVersionResponse = 15,
+ ChannelMessageUnload = 16,
+#ifdef VMBUS_FEATURE_PARENT_OR_PEER_MEMORY_MAPPED_INTO_A_CHILD
+ ChannelMessageViewRangeAdd = 17,
+ ChannelMessageViewRangeRemove = 18,
+#endif
+ ChannelMessageCount
+} __attribute__((packed));
+
+struct vmbus_channel_message_header {
+ enum vmbus_channel_message_type MessageType;
+ u32 Padding;
+} __attribute__((packed));
+
+/* Query VMBus Version parameters */
+struct vmbus_channel_query_vmbus_version {
+ struct vmbus_channel_message_header Header;
+ u32 Version;
+} __attribute__((packed));
+
+/* VMBus Version Supported parameters */
+struct vmbus_channel_version_supported {
+ struct vmbus_channel_message_header Header;
+ bool VersionSupported;
+} __attribute__((packed));
+
+/* Offer Channel parameters */
+struct vmbus_channel_offer_channel {
+ struct vmbus_channel_message_header Header;
+ struct vmbus_channel_offer Offer;
+ u32 ChildRelId;
+ u8 MonitorId;
+ bool MonitorAllocated;
+} __attribute__((packed));
+
+/* Rescind Offer parameters */
+struct vmbus_channel_rescind_offer {
+ struct vmbus_channel_message_header Header;
+ u32 ChildRelId;
+} __attribute__((packed));
-#include "include/VmbusChannelInterface.h"
-#include "include/ChannelMessages.h"
+/*
+ * Request Offer -- no parameters, SynIC message contains the partition ID
+ * Set Snoop -- no parameters, SynIC message contains the partition ID
+ * Clear Snoop -- no parameters, SynIC message contains the partition ID
+ * All Offers Delivered -- no parameters, SynIC message contains the partition
+ * ID
+ * Flush Client -- no parameters, SynIC message contains the partition ID
+ */
+
+/* Open Channel parameters */
+struct vmbus_channel_open_channel {
+ struct vmbus_channel_message_header Header;
+
+ /* Identifies the specific VMBus channel that is being opened. */
+ u32 ChildRelId;
+
+ /* ID making a particular open request at a channel offer unique. */
+ u32 OpenId;
+
+ /* GPADL for the channel's ring buffer. */
+ u32 RingBufferGpadlHandle;
+ /* GPADL for the channel's server context save area. */
+ u32 ServerContextAreaGpadlHandle;
+ /*
+ * The upstream ring buffer begins at offset zero in the memory
+ * described by RingBufferGpadlHandle. The downstream ring buffer
+ * follows it at this offset (in pages).
+ */
+ u32 DownstreamRingBufferPageOffset;
-typedef void (*PFN_CHANNEL_CALLBACK)(void * context);
+ /* User-specific data to be passed along to the server endpoint. */
+ unsigned char UserData[MAX_USER_DEFINED_BYTES];
+} __attribute__((packed));
-typedef enum {
+/* Open Channel Result parameters */
+struct vmbus_channel_open_result {
+ struct vmbus_channel_message_header Header;
+ u32 ChildRelId;
+ u32 OpenId;
+ u32 Status;
+} __attribute__((packed));
+
+/* Close channel parameters; */
+struct vmbus_channel_close_channel {
+ struct vmbus_channel_message_header Header;
+ u32 ChildRelId;
+} __attribute__((packed));
+
+/* Channel Message GPADL */
+#define GPADL_TYPE_RING_BUFFER 1
+#define GPADL_TYPE_SERVER_SAVE_AREA 2
+#define GPADL_TYPE_TRANSACTION 8
+
+/*
+ * The number of PFNs in a GPADL message is defined by the number of
+ * pages that would be spanned by ByteCount and ByteOffset. If the
+ * implied number of PFNs won't fit in this packet, there will be a
+ * follow-up packet that contains more.
+ */
+struct vmbus_channel_gpadl_header {
+ struct vmbus_channel_message_header Header;
+ u32 ChildRelId;
+ u32 Gpadl;
+ u16 RangeBufLen;
+ u16 RangeCount;
+ struct gpa_range Range[0];
+} __attribute__((packed));
+
+/* This is the followup packet that contains more PFNs. */
+struct vmbus_channel_gpadl_body {
+ struct vmbus_channel_message_header Header;
+ u32 MessageNumber;
+ u32 Gpadl;
+ u64 Pfn[0];
+} __attribute__((packed));
+
+struct vmbus_channel_gpadl_created {
+ struct vmbus_channel_message_header Header;
+ u32 ChildRelId;
+ u32 Gpadl;
+ u32 CreationStatus;
+} __attribute__((packed));
+
+struct vmbus_channel_gpadl_teardown {
+ struct vmbus_channel_message_header Header;
+ u32 ChildRelId;
+ u32 Gpadl;
+} __attribute__((packed));
+
+struct vmbus_channel_gpadl_torndown {
+ struct vmbus_channel_message_header Header;
+ u32 Gpadl;
+} __attribute__((packed));
+
+#ifdef VMBUS_FEATURE_PARENT_OR_PEER_MEMORY_MAPPED_INTO_A_CHILD
+struct vmbus_channel_view_range_add {
+ struct vmbus_channel_message_header Header;
+ PHYSICAL_ADDRESS ViewRangeBase;
+ u64 ViewRangeLength;
+ u32 ChildRelId;
+} __attribute__((packed));
+
+struct vmbus_channel_view_range_remove {
+ struct vmbus_channel_message_header Header;
+ PHYSICAL_ADDRESS ViewRangeBase;
+ u32 ChildRelId;
+} __attribute__((packed));
+#endif
+
+struct vmbus_channel_relid_released {
+ struct vmbus_channel_message_header Header;
+ u32 ChildRelId;
+} __attribute__((packed));
+
+struct vmbus_channel_initiate_contact {
+ struct vmbus_channel_message_header Header;
+ u32 VMBusVersionRequested;
+ u32 Padding2;
+ u64 InterruptPage;
+ u64 MonitorPage1;
+ u64 MonitorPage2;
+} __attribute__((packed));
+
+struct vmbus_channel_version_response {
+ struct vmbus_channel_message_header Header;
+ bool VersionSupported;
+} __attribute__((packed));
+
+enum vmbus_channel_state {
CHANNEL_OFFER_STATE,
CHANNEL_OPENING_STATE,
CHANNEL_OPEN_STATE,
-} VMBUS_CHANNEL_STATE;
+};
-typedef struct _VMBUS_CHANNEL {
- LIST_ENTRY ListEntry;
+struct vmbus_channel {
+ struct list_head ListEntry;
struct hv_device *DeviceObject;
- HANDLE PollTimer; /* SA-111 workaround */
+ struct timer_list poll_timer; /* SA-111 workaround */
- VMBUS_CHANNEL_STATE State;
+ enum vmbus_channel_state State;
- VMBUS_CHANNEL_OFFER_CHANNEL OfferMsg;
- /* These are based on the OfferMsg.MonitorId. Save it here for easy access. */
- u8 MonitorGroup;
- u8 MonitorBit;
+ struct vmbus_channel_offer_channel OfferMsg;
+ /*
+ * These are based on the OfferMsg.MonitorId.
+ * Save it here for easy access.
+ */
+ u8 MonitorGroup;
+ u8 MonitorBit;
- u32 RingBufferGpadlHandle;
+ u32 RingBufferGpadlHandle;
/* Allocated memory for ring buffer */
- void * RingBufferPages;
- u32 RingBufferPageCount;
- RING_BUFFER_INFO Outbound; /* send to parent */
- RING_BUFFER_INFO Inbound; /* receive from parent */
+ void *RingBufferPages;
+ u32 RingBufferPageCount;
+ RING_BUFFER_INFO Outbound; /* send to parent */
+ RING_BUFFER_INFO Inbound; /* receive from parent */
spinlock_t inbound_lock;
struct workqueue_struct *ControlWQ;
/* Channel callback are invoked in this workqueue context */
- /* HANDLE dataWorkQueue; */
-
- PFN_CHANNEL_CALLBACK OnChannelCallback;
- void * ChannelCallbackContext;
-
-} VMBUS_CHANNEL;
-
-
-typedef struct _VMBUS_CHANNEL_DEBUG_INFO {
- u32 RelId;
- VMBUS_CHANNEL_STATE State;
- GUID InterfaceType;
- GUID InterfaceInstance;
- u32 MonitorId;
- u32 ServerMonitorPending;
- u32 ServerMonitorLatency;
- u32 ServerMonitorConnectionId;
- u32 ClientMonitorPending;
- u32 ClientMonitorLatency;
- u32 ClientMonitorConnectionId;
-
- RING_BUFFER_DEBUG_INFO Inbound;
- RING_BUFFER_DEBUG_INFO Outbound;
-} VMBUS_CHANNEL_DEBUG_INFO;
-
-
-typedef union {
- VMBUS_CHANNEL_VERSION_SUPPORTED VersionSupported;
- VMBUS_CHANNEL_OPEN_RESULT OpenResult;
- VMBUS_CHANNEL_GPADL_TORNDOWN GpadlTorndown;
- VMBUS_CHANNEL_GPADL_CREATED GpadlCreated;
- VMBUS_CHANNEL_VERSION_RESPONSE VersionResponse;
-} VMBUS_CHANNEL_MESSAGE_RESPONSE;
-
+ /* HANDLE dataWorkQueue; */
+
+ void (*OnChannelCallback)(void *context);
+ void *ChannelCallbackContext;
+};
+
+struct vmbus_channel_debug_info {
+ u32 RelId;
+ enum vmbus_channel_state State;
+ struct hv_guid InterfaceType;
+ struct hv_guid InterfaceInstance;
+ u32 MonitorId;
+ u32 ServerMonitorPending;
+ u32 ServerMonitorLatency;
+ u32 ServerMonitorConnectionId;
+ u32 ClientMonitorPending;
+ u32 ClientMonitorLatency;
+ u32 ClientMonitorConnectionId;
+
+ RING_BUFFER_DEBUG_INFO Inbound;
+ RING_BUFFER_DEBUG_INFO Outbound;
+};
/*
* Represents each channel msg on the vmbus connection This is a
* variable-size data structure depending on the msg type itself
*/
-
-typedef struct _VMBUS_CHANNEL_MSGINFO {
+struct vmbus_channel_msginfo {
/* Bookkeeping stuff */
- LIST_ENTRY MsgListEntry;
+ struct list_head MsgListEntry;
/* So far, this is only used to handle gpadl body message */
- LIST_ENTRY SubMsgList;
+ struct list_head SubMsgList;
/* Synchronize the request/response if needed */
- HANDLE WaitEvent;
-
- VMBUS_CHANNEL_MESSAGE_RESPONSE Response;
+ struct osd_waitevent *WaitEvent;
- u32 MessageSize;
- /* The channel message that goes out on the "wire". */
- /* It will contain at minimum the VMBUS_CHANNEL_MESSAGE_HEADER header */
- unsigned char Msg[0];
-} VMBUS_CHANNEL_MSGINFO;
+ union {
+ struct vmbus_channel_version_supported VersionSupported;
+ struct vmbus_channel_open_result OpenResult;
+ struct vmbus_channel_gpadl_torndown GpadlTorndown;
+ struct vmbus_channel_gpadl_created GpadlCreated;
+ struct vmbus_channel_version_response VersionResponse;
+ } Response;
+ u32 MessageSize;
+ /*
+ * The channel message that goes out on the "wire".
+ * It will contain at minimum the VMBUS_CHANNEL_MESSAGE_HEADER header
+ */
+ unsigned char Msg[0];
+};
-/* Routines */
-static VMBUS_CHANNEL*
-AllocVmbusChannel(
- void
- );
+struct vmbus_channel *AllocVmbusChannel(void);
-static void
-FreeVmbusChannel(
- VMBUS_CHANNEL *Channel
- );
+void FreeVmbusChannel(struct vmbus_channel *Channel);
-static void
-VmbusOnChannelMessage(
- void *Context
- );
+void VmbusOnChannelMessage(void *Context);
-static int
-VmbusChannelRequestOffers(
- void
- );
+int VmbusChannelRequestOffers(void);
-static void
-VmbusChannelReleaseUnattachedChannels(
- void
- );
+void VmbusChannelReleaseUnattachedChannels(void);
#endif /* _CHANNEL_MGMT_H_ */
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