/*
- *
* Copyright (c) 2009, Microsoft Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* Authors:
* Haiyang Zhang <haiyangz@microsoft.com>
* Hank Janssen <hjanssen@microsoft.com>
- *
*/
-
-
#include <linux/kernel.h>
#include <linux/mm.h>
#include "osd.h"
#include "logging.h"
#include "VmbusPrivate.h"
-/* Data types */
-
typedef void (*PFN_CHANNEL_MESSAGE_HANDLER)(struct vmbus_channel_message_header *msg);
struct vmbus_channel_message_table_entry {
PFN_CHANNEL_MESSAGE_HANDLER messageHandler;
};
-/* Internal routines */
-static void VmbusChannelOnOffer(struct vmbus_channel_message_header *hdr);
-static void VmbusChannelOnOpenResult(struct vmbus_channel_message_header *hdr);
-static void VmbusChannelOnOfferRescind(struct vmbus_channel_message_header *hdr);
-static void VmbusChannelOnGpadlCreated(struct vmbus_channel_message_header *hdr);
-static void VmbusChannelOnGpadlTorndown(struct vmbus_channel_message_header *hdr);
-static void VmbusChannelOnOffersDelivered(struct vmbus_channel_message_header *hdr);
-static void VmbusChannelOnVersionResponse(struct vmbus_channel_message_header *hdr);
-static void VmbusChannelProcessOffer(void * context);
-static void VmbusChannelProcessRescindOffer(void * context);
+static void VmbusChannelOnOffer(struct vmbus_channel_message_header *);
+static void VmbusChannelOnOpenResult(struct vmbus_channel_message_header *);
+static void VmbusChannelOnOfferRescind(struct vmbus_channel_message_header *);
+static void VmbusChannelOnGpadlCreated(struct vmbus_channel_message_header *);
+static void VmbusChannelOnGpadlTorndown(struct vmbus_channel_message_header *);
+static void VmbusChannelOnOffersDelivered(struct vmbus_channel_message_header *);
+static void VmbusChannelOnVersionResponse(struct vmbus_channel_message_header *);
+static void VmbusChannelProcessOffer(void *context);
+static void VmbusChannelProcessRescindOffer(void *context);
-/* Globals */
-
#define MAX_NUM_DEVICE_CLASSES_SUPPORTED 4
-
-static const struct hv_guid gSupportedDeviceClasses[MAX_NUM_DEVICE_CLASSES_SUPPORTED] = {
+static const struct hv_guid
+ gSupportedDeviceClasses[MAX_NUM_DEVICE_CLASSES_SUPPORTED] = {
/* {ba6163d9-04a1-4d29-b605-72e2ffb1dc7f} */
/* Storage - SCSI */
{
};
/* Channel message dispatch table */
-static struct vmbus_channel_message_table_entry gChannelMessageTable[ChannelMessageCount]= {
- {ChannelMessageInvalid, NULL},
- {ChannelMessageOfferChannel, VmbusChannelOnOffer},
- {ChannelMessageRescindChannelOffer, VmbusChannelOnOfferRescind},
- {ChannelMessageRequestOffers, NULL},
- {ChannelMessageAllOffersDelivered, VmbusChannelOnOffersDelivered},
- {ChannelMessageOpenChannel, NULL},
- {ChannelMessageOpenChannelResult, VmbusChannelOnOpenResult},
- {ChannelMessageCloseChannel, NULL},
- {ChannelMessageGpadlHeader, NULL},
- {ChannelMessageGpadlBody, NULL},
- {ChannelMessageGpadlCreated, VmbusChannelOnGpadlCreated},
- {ChannelMessageGpadlTeardown, NULL},
- {ChannelMessageGpadlTorndown, VmbusChannelOnGpadlTorndown},
- {ChannelMessageRelIdReleased, NULL},
- {ChannelMessageInitiateContact, NULL},
- {ChannelMessageVersionResponse, VmbusChannelOnVersionResponse},
- {ChannelMessageUnload, NULL},
+static struct vmbus_channel_message_table_entry
+ gChannelMessageTable[ChannelMessageCount] = {
+ {ChannelMessageInvalid, NULL},
+ {ChannelMessageOfferChannel, VmbusChannelOnOffer},
+ {ChannelMessageRescindChannelOffer, VmbusChannelOnOfferRescind},
+ {ChannelMessageRequestOffers, NULL},
+ {ChannelMessageAllOffersDelivered, VmbusChannelOnOffersDelivered},
+ {ChannelMessageOpenChannel, NULL},
+ {ChannelMessageOpenChannelResult, VmbusChannelOnOpenResult},
+ {ChannelMessageCloseChannel, NULL},
+ {ChannelMessageGpadlHeader, NULL},
+ {ChannelMessageGpadlBody, NULL},
+ {ChannelMessageGpadlCreated, VmbusChannelOnGpadlCreated},
+ {ChannelMessageGpadlTeardown, NULL},
+ {ChannelMessageGpadlTorndown, VmbusChannelOnGpadlTorndown},
+ {ChannelMessageRelIdReleased, NULL},
+ {ChannelMessageInitiateContact, NULL},
+ {ChannelMessageVersionResponse, VmbusChannelOnVersionResponse},
+ {ChannelMessageUnload, NULL},
};
-/*++
-
-Name:
- AllocVmbusChannel()
-
-Description:
- Allocate and initialize a vmbus channel object
-
---*/
+/**
+ * AllocVmbusChannel - Allocate and initialize a vmbus channel object
+ */
struct vmbus_channel *AllocVmbusChannel(void)
{
struct vmbus_channel *channel;
channel = kzalloc(sizeof(*channel), GFP_ATOMIC);
if (!channel)
- {
return NULL;
- }
spin_lock_init(&channel->inbound_lock);
channel->poll_timer.data = (unsigned long)channel;
channel->poll_timer.function = VmbusChannelOnTimer;
- /* channel->dataWorkQueue = WorkQueueCreate("data"); */
channel->ControlWQ = create_workqueue("hv_vmbus_ctl");
- if (!channel->ControlWQ)
- {
+ if (!channel->ControlWQ) {
kfree(channel);
return NULL;
}
return channel;
}
-/*++
-
-Name:
- ReleaseVmbusChannel()
-
-Description:
- Release the vmbus channel object itself
-
---*/
-static inline void ReleaseVmbusChannel(void* Context)
+/**
+ * ReleaseVmbusChannel - Release the vmbus channel object itself
+ */
+static inline void ReleaseVmbusChannel(void *context)
{
- struct vmbus_channel *channel = Context;
+ struct vmbus_channel *channel = context;
DPRINT_ENTER(VMBUS);
DPRINT_EXIT(VMBUS);
}
-/*++
-
-Name:
- FreeVmbusChannel()
-
-Description:
- Release the resources used by the vmbus channel object
-
---*/
+/**
+ * FreeVmbusChannel - Release the resources used by the vmbus channel object
+ */
void FreeVmbusChannel(struct vmbus_channel *Channel)
{
del_timer(&Channel->poll_timer);
- /* We have to release the channel's workqueue/thread in the vmbus's workqueue/thread context */
- /* ie we can't destroy ourselves. */
+ /*
+ * We have to release the channel's workqueue/thread in the vmbus's
+ * workqueue/thread context
+ * ie we can't destroy ourselves.
+ */
osd_schedule_callback(gVmbusConnection.WorkQueue, ReleaseVmbusChannel,
- (void *)Channel);
+ Channel);
}
-
-/*++
-
-Name:
- VmbusChannelProcessOffer()
-
-Description:
- Process the offer by creating a channel/device associated with this offer
-
---*/
-static void
-VmbusChannelProcessOffer(
- void * context
- )
+/**
+ * VmbusChannelProcessOffer - Process the offer by creating a channel/device associated with this offer
+ */
+static void VmbusChannelProcessOffer(void *context)
{
- int ret=0;
struct vmbus_channel *newChannel = context;
struct vmbus_channel *channel;
- LIST_ENTRY* anchor;
- LIST_ENTRY* curr;
+ LIST_ENTRY *anchor;
+ LIST_ENTRY *curr;
bool fNew = true;
+ int ret;
unsigned long flags;
DPRINT_ENTER(VMBUS);
/* Make sure this is a new offer */
spin_lock_irqsave(&gVmbusConnection.channel_lock, flags);
- ITERATE_LIST_ENTRIES(anchor, curr, &gVmbusConnection.ChannelList)
- {
- channel = CONTAINING_RECORD(curr, struct vmbus_channel, ListEntry);
+ ITERATE_LIST_ENTRIES(anchor, curr, &gVmbusConnection.ChannelList) {
+ channel = CONTAINING_RECORD(curr, struct vmbus_channel,
+ ListEntry);
- if (!memcmp(&channel->OfferMsg.Offer.InterfaceType, &newChannel->OfferMsg.Offer.InterfaceType,sizeof(struct hv_guid)) &&
- !memcmp(&channel->OfferMsg.Offer.InterfaceInstance, &newChannel->OfferMsg.Offer.InterfaceInstance, sizeof(struct hv_guid)))
- {
+ if (!memcmp(&channel->OfferMsg.Offer.InterfaceType,
+ &newChannel->OfferMsg.Offer.InterfaceType,
+ sizeof(struct hv_guid)) &&
+ !memcmp(&channel->OfferMsg.Offer.InterfaceInstance,
+ &newChannel->OfferMsg.Offer.InterfaceInstance,
+ sizeof(struct hv_guid))) {
fNew = false;
break;
}
}
if (fNew)
- {
- INSERT_TAIL_LIST(&gVmbusConnection.ChannelList, &newChannel->ListEntry);
- }
+ INSERT_TAIL_LIST(&gVmbusConnection.ChannelList,
+ &newChannel->ListEntry);
+
spin_unlock_irqrestore(&gVmbusConnection.channel_lock, flags);
- if (!fNew)
- {
- DPRINT_DBG(VMBUS, "Ignoring duplicate offer for relid (%d)", newChannel->OfferMsg.ChildRelId);
+ if (!fNew) {
+ DPRINT_DBG(VMBUS, "Ignoring duplicate offer for relid (%d)",
+ newChannel->OfferMsg.ChildRelId);
FreeVmbusChannel(newChannel);
DPRINT_EXIT(VMBUS);
return;
}
- /* Start the process of binding this offer to the driver */
- /* We need to set the DeviceObject field before calling VmbusChildDeviceAdd() */
+ /*
+ * Start the process of binding this offer to the driver
+ * We need to set the DeviceObject field before calling
+ * VmbusChildDeviceAdd()
+ */
newChannel->DeviceObject = VmbusChildDeviceCreate(
&newChannel->OfferMsg.Offer.InterfaceType,
&newChannel->OfferMsg.Offer.InterfaceInstance,
newChannel);
- DPRINT_DBG(VMBUS, "child device object allocated - %p", newChannel->DeviceObject);
+ DPRINT_DBG(VMBUS, "child device object allocated - %p",
+ newChannel->DeviceObject);
/*
* Add the new device to the bus. This will kick off device-driver
* binding which eventually invokes the device driver's AddDevice()
* method.
*/
-
ret = VmbusChildDeviceAdd(newChannel->DeviceObject);
- if (ret != 0)
- {
- DPRINT_ERR(VMBUS, "unable to add child device object (relid %d)",
- newChannel->OfferMsg.ChildRelId);
+ if (ret != 0) {
+ DPRINT_ERR(VMBUS,
+ "unable to add child device object (relid %d)",
+ newChannel->OfferMsg.ChildRelId);
spin_lock_irqsave(&gVmbusConnection.channel_lock, flags);
REMOVE_ENTRY_LIST(&newChannel->ListEntry);
spin_unlock_irqrestore(&gVmbusConnection.channel_lock, flags);
FreeVmbusChannel(newChannel);
- }
- else
- {
+ } else {
/*
* This state is used to indicate a successful open
* so that when we do close the channel normally, we
DPRINT_EXIT(VMBUS);
}
-/*++
-
-Name:
- VmbusChannelProcessRescindOffer()
-
-Description:
- Rescind the offer by initiating a device removal
-
---*/
-static void
-VmbusChannelProcessRescindOffer(
- void * context
- )
+/**
+ * VmbusChannelProcessRescindOffer - Rescind the offer by initiating a device removal
+ */
+static void VmbusChannelProcessRescindOffer(void *context)
{
struct vmbus_channel *channel = context;
DPRINT_ENTER(VMBUS);
-
VmbusChildDeviceRemove(channel->DeviceObject);
-
DPRINT_EXIT(VMBUS);
}
-
-/*++
-
-Name:
- VmbusChannelOnOffer()
-
-Description:
- Handler for channel offers from vmbus in parent partition. We ignore all offers except
- network and storage offers. For each network and storage offers, we create a channel object
- and queue a work item to the channel object to process the offer synchronously
-
---*/
+/**
+ * VmbusChannelOnOffer - Handler for channel offers from vmbus in parent partition.
+ *
+ * We ignore all offers except network and storage offers. For each network and
+ * storage offers, we create a channel object and queue a work item to the
+ * channel object to process the offer synchronously
+ */
static void VmbusChannelOnOffer(struct vmbus_channel_message_header *hdr)
{
- struct vmbus_channel_offer_channel *offer = (struct vmbus_channel_offer_channel *)hdr;
+ struct vmbus_channel_offer_channel *offer;
struct vmbus_channel *newChannel;
-
struct hv_guid *guidType;
struct hv_guid *guidInstance;
int i;
- int fSupported=0;
+ int fSupported = 0;
DPRINT_ENTER(VMBUS);
- for (i=0; i<MAX_NUM_DEVICE_CLASSES_SUPPORTED; i++)
- {
- if (memcmp(&offer->Offer.InterfaceType, &gSupportedDeviceClasses[i], sizeof(struct hv_guid)) == 0)
- {
+ offer = (struct vmbus_channel_offer_channel *)hdr;
+ for (i = 0; i < MAX_NUM_DEVICE_CLASSES_SUPPORTED; i++) {
+ if (memcmp(&offer->Offer.InterfaceType,
+ &gSupportedDeviceClasses[i], sizeof(struct hv_guid)) == 0) {
fSupported = 1;
break;
}
}
- if (!fSupported)
- {
- DPRINT_DBG(VMBUS, "Ignoring channel offer notification for child relid %d", offer->ChildRelId);
+ if (!fSupported) {
+ DPRINT_DBG(VMBUS, "Ignoring channel offer notification for "
+ "child relid %d", offer->ChildRelId);
DPRINT_EXIT(VMBUS);
-
return;
}
guidType = &offer->Offer.InterfaceType;
guidInstance = &offer->Offer.InterfaceInstance;
- DPRINT_INFO(VMBUS, "Channel offer notification - child relid %d monitor id %d allocated %d, "
- "type {%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x%02x%02x} "
- "instance {%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x%02x%02x}",
- offer->ChildRelId,
- offer->MonitorId,
- offer->MonitorAllocated,
- guidType->data[3], guidType->data[2], guidType->data[1], guidType->data[0],
- guidType->data[5], guidType->data[4], guidType->data[7], guidType->data[6],
- guidType->data[8], guidType->data[9], guidType->data[10], guidType->data[11],
- guidType->data[12], guidType->data[13], guidType->data[14], guidType->data[15],
- guidInstance->data[3], guidInstance->data[2], guidInstance->data[1], guidInstance->data[0],
- guidInstance->data[5], guidInstance->data[4], guidInstance->data[7], guidInstance->data[6],
- guidInstance->data[8], guidInstance->data[9], guidInstance->data[10], guidInstance->data[11],
- guidInstance->data[12], guidInstance->data[13], guidInstance->data[14], guidInstance->data[15]);
+ DPRINT_INFO(VMBUS, "Channel offer notification - "
+ "child relid %d monitor id %d allocated %d, "
+ "type {%02x%02x%02x%02x-%02x%02x-%02x%02x-"
+ "%02x%02x%02x%02x%02x%02x%02x%02x} "
+ "instance {%02x%02x%02x%02x-%02x%02x-%02x%02x-"
+ "%02x%02x%02x%02x%02x%02x%02x%02x}",
+ offer->ChildRelId, offer->MonitorId,
+ offer->MonitorAllocated,
+ guidType->data[3], guidType->data[2],
+ guidType->data[1], guidType->data[0],
+ guidType->data[5], guidType->data[4],
+ guidType->data[7], guidType->data[6],
+ guidType->data[8], guidType->data[9],
+ guidType->data[10], guidType->data[11],
+ guidType->data[12], guidType->data[13],
+ guidType->data[14], guidType->data[15],
+ guidInstance->data[3], guidInstance->data[2],
+ guidInstance->data[1], guidInstance->data[0],
+ guidInstance->data[5], guidInstance->data[4],
+ guidInstance->data[7], guidInstance->data[6],
+ guidInstance->data[8], guidInstance->data[9],
+ guidInstance->data[10], guidInstance->data[11],
+ guidInstance->data[12], guidInstance->data[13],
+ guidInstance->data[14], guidInstance->data[15]);
/* Allocate the channel object and save this offer. */
newChannel = AllocVmbusChannel();
- if (!newChannel)
- {
+ if (!newChannel) {
DPRINT_ERR(VMBUS, "unable to allocate channel object");
return;
}
DPRINT_DBG(VMBUS, "channel object allocated - %p", newChannel);
- memcpy(&newChannel->OfferMsg, offer, sizeof(struct vmbus_channel_offer_channel));
+ memcpy(&newChannel->OfferMsg, offer,
+ sizeof(struct vmbus_channel_offer_channel));
newChannel->MonitorGroup = (u8)offer->MonitorId / 32;
newChannel->MonitorBit = (u8)offer->MonitorId % 32;
DPRINT_EXIT(VMBUS);
}
-
-/*++
-
-Name:
- VmbusChannelOnOfferRescind()
-
-Description:
- Rescind offer handler. We queue a work item to process this offer
- synchronously
-
---*/
+/**
+ * VmbusChannelOnOfferRescind - Rescind offer handler.
+ *
+ * We queue a work item to process this offer synchronously
+ */
static void VmbusChannelOnOfferRescind(struct vmbus_channel_message_header *hdr)
{
- struct vmbus_channel_rescind_offer *rescind = (struct vmbus_channel_rescind_offer *)hdr;
+ struct vmbus_channel_rescind_offer *rescind;
struct vmbus_channel *channel;
DPRINT_ENTER(VMBUS);
+ rescind = (struct vmbus_channel_rescind_offer *)hdr;
channel = GetChannelFromRelId(rescind->ChildRelId);
- if (channel == NULL)
- {
- DPRINT_DBG(VMBUS, "channel not found for relId %d", rescind->ChildRelId);
+ if (channel == NULL) {
+ DPRINT_DBG(VMBUS, "channel not found for relId %d",
+ rescind->ChildRelId);
return;
}
DPRINT_EXIT(VMBUS);
}
-
-/*++
-
-Name:
- VmbusChannelOnOffersDelivered()
-
-Description:
- This is invoked when all offers have been delivered.
- Nothing to do here.
-
---*/
-static void VmbusChannelOnOffersDelivered(struct vmbus_channel_message_header *hdr)
+/**
+ * VmbusChannelOnOffersDelivered - This is invoked when all offers have been delivered.
+ *
+ * Nothing to do here.
+ */
+static void VmbusChannelOnOffersDelivered(
+ struct vmbus_channel_message_header *hdr)
{
DPRINT_ENTER(VMBUS);
DPRINT_EXIT(VMBUS);
}
-
-/*++
-
-Name:
- VmbusChannelOnOpenResult()
-
-Description:
- Open result handler. This is invoked when we received a response
- to our channel open request. Find the matching request, copy the
- response and signal the requesting thread.
-
---*/
+/**
+ * VmbusChannelOnOpenResult - Open result handler.
+ *
+ * This is invoked when we received a response to our channel open request.
+ * Find the matching request, copy the response and signal the requesting
+ * thread.
+ */
static void VmbusChannelOnOpenResult(struct vmbus_channel_message_header *hdr)
{
- struct vmbus_channel_open_result *result = (struct vmbus_channel_open_result *)hdr;
- LIST_ENTRY* anchor;
- LIST_ENTRY* curr;
+ struct vmbus_channel_open_result *result;
+ LIST_ENTRY *anchor;
+ LIST_ENTRY *curr;
struct vmbus_channel_msginfo *msgInfo;
struct vmbus_channel_message_header *requestHeader;
struct vmbus_channel_open_channel *openMsg;
DPRINT_ENTER(VMBUS);
+ result = (struct vmbus_channel_open_result *)hdr;
DPRINT_DBG(VMBUS, "vmbus open result - %d", result->Status);
- /* Find the open msg, copy the result and signal/unblock the wait event */
+ /*
+ * Find the open msg, copy the result and signal/unblock the wait event
+ */
spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags);
- ITERATE_LIST_ENTRIES(anchor, curr, &gVmbusConnection.ChannelMsgList)
- {
+ ITERATE_LIST_ENTRIES(anchor, curr, &gVmbusConnection.ChannelMsgList) {
msgInfo = (struct vmbus_channel_msginfo *)curr;
requestHeader = (struct vmbus_channel_message_header *)msgInfo->Msg;
- if (requestHeader->MessageType == ChannelMessageOpenChannel)
- {
+ if (requestHeader->MessageType == ChannelMessageOpenChannel) {
openMsg = (struct vmbus_channel_open_channel *)msgInfo->Msg;
if (openMsg->ChildRelId == result->ChildRelId &&
- openMsg->OpenId == result->OpenId)
- {
- memcpy(&msgInfo->Response.OpenResult, result, sizeof(struct vmbus_channel_open_result));
+ openMsg->OpenId == result->OpenId) {
+ memcpy(&msgInfo->Response.OpenResult,
+ result,
+ sizeof(struct vmbus_channel_open_result));
osd_WaitEventSet(msgInfo->WaitEvent);
break;
}
DPRINT_EXIT(VMBUS);
}
-
-/*++
-
-Name:
- VmbusChannelOnGpadlCreated()
-
-Description:
- GPADL created handler. This is invoked when we received a response
- to our gpadl create request. Find the matching request, copy the
- response and signal the requesting thread.
-
---*/
+/**
+ * VmbusChannelOnGpadlCreated - GPADL created handler.
+ *
+ * This is invoked when we received a response to our gpadl create request.
+ * Find the matching request, copy the response and signal the requesting
+ * thread.
+ */
static void VmbusChannelOnGpadlCreated(struct vmbus_channel_message_header *hdr)
{
- struct vmbus_channel_gpadl_created *gpadlCreated = (struct vmbus_channel_gpadl_created *)hdr;
+ struct vmbus_channel_gpadl_created *gpadlCreated;
LIST_ENTRY *anchor;
LIST_ENTRY *curr;
struct vmbus_channel_msginfo *msgInfo;
DPRINT_ENTER(VMBUS);
- DPRINT_DBG(VMBUS, "vmbus gpadl created result - %d", gpadlCreated->CreationStatus);
+ gpadlCreated = (struct vmbus_channel_gpadl_created *)hdr;
+ DPRINT_DBG(VMBUS, "vmbus gpadl created result - %d",
+ gpadlCreated->CreationStatus);
- /* Find the establish msg, copy the result and signal/unblock the wait event */
+ /*
+ * Find the establish msg, copy the result and signal/unblock the wait
+ * event
+ */
spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags);
- ITERATE_LIST_ENTRIES(anchor, curr, &gVmbusConnection.ChannelMsgList)
- {
+ ITERATE_LIST_ENTRIES(anchor, curr, &gVmbusConnection.ChannelMsgList) {
msgInfo = (struct vmbus_channel_msginfo *)curr;
requestHeader = (struct vmbus_channel_message_header *)msgInfo->Msg;
- if (requestHeader->MessageType == ChannelMessageGpadlHeader)
- {
+ if (requestHeader->MessageType == ChannelMessageGpadlHeader) {
gpadlHeader = (struct vmbus_channel_gpadl_header *)requestHeader;
- if ((gpadlCreated->ChildRelId == gpadlHeader->ChildRelId) &&
- (gpadlCreated->Gpadl == gpadlHeader->Gpadl))
- {
- memcpy(&msgInfo->Response.GpadlCreated, gpadlCreated, sizeof(struct vmbus_channel_gpadl_created));
+ if ((gpadlCreated->ChildRelId ==
+ gpadlHeader->ChildRelId) &&
+ (gpadlCreated->Gpadl == gpadlHeader->Gpadl)) {
+ memcpy(&msgInfo->Response.GpadlCreated,
+ gpadlCreated,
+ sizeof(struct vmbus_channel_gpadl_created));
osd_WaitEventSet(msgInfo->WaitEvent);
break;
}
DPRINT_EXIT(VMBUS);
}
-
-/*++
-
-Name:
- VmbusChannelOnGpadlTorndown()
-
-Description:
- GPADL torndown handler. This is invoked when we received a response
- to our gpadl teardown request. Find the matching request, copy the
- response and signal the requesting thread.
-
---*/
-static void VmbusChannelOnGpadlTorndown(struct vmbus_channel_message_header *hdr)
+/**
+ * VmbusChannelOnGpadlTorndown - GPADL torndown handler.
+ *
+ * This is invoked when we received a response to our gpadl teardown request.
+ * Find the matching request, copy the response and signal the requesting
+ * thread.
+ */
+static void VmbusChannelOnGpadlTorndown(
+ struct vmbus_channel_message_header *hdr)
{
- struct vmbus_channel_gpadl_torndown* gpadlTorndown = (struct vmbus_channel_gpadl_torndown *)hdr;
- LIST_ENTRY* anchor;
- LIST_ENTRY* curr;
+ struct vmbus_channel_gpadl_torndown *gpadlTorndown;
+ LIST_ENTRY *anchor;
+ LIST_ENTRY *curr;
struct vmbus_channel_msginfo *msgInfo;
struct vmbus_channel_message_header *requestHeader;
struct vmbus_channel_gpadl_teardown *gpadlTeardown;
DPRINT_ENTER(VMBUS);
- /* Find the open msg, copy the result and signal/unblock the wait event */
+ gpadlTorndown = (struct vmbus_channel_gpadl_torndown *)hdr;
+
+ /*
+ * Find the open msg, copy the result and signal/unblock the wait event
+ */
spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags);
- ITERATE_LIST_ENTRIES(anchor, curr, &gVmbusConnection.ChannelMsgList)
- {
+ ITERATE_LIST_ENTRIES(anchor, curr, &gVmbusConnection.ChannelMsgList) {
msgInfo = (struct vmbus_channel_msginfo *)curr;
requestHeader = (struct vmbus_channel_message_header *)msgInfo->Msg;
- if (requestHeader->MessageType == ChannelMessageGpadlTeardown)
- {
+ if (requestHeader->MessageType == ChannelMessageGpadlTeardown) {
gpadlTeardown = (struct vmbus_channel_gpadl_teardown *)requestHeader;
- if (gpadlTorndown->Gpadl == gpadlTeardown->Gpadl)
- {
- memcpy(&msgInfo->Response.GpadlTorndown, gpadlTorndown, sizeof(struct vmbus_channel_gpadl_torndown));
+ if (gpadlTorndown->Gpadl == gpadlTeardown->Gpadl) {
+ memcpy(&msgInfo->Response.GpadlTorndown,
+ gpadlTorndown,
+ sizeof(struct vmbus_channel_gpadl_torndown));
osd_WaitEventSet(msgInfo->WaitEvent);
break;
}
DPRINT_EXIT(VMBUS);
}
-
-/*++
-
-Name:
- VmbusChannelOnVersionResponse()
-
-Description:
- Version response handler. This is invoked when we received a response
- to our initiate contact request. Find the matching request, copy the
- response and signal the requesting thread.
-
---*/
-static void VmbusChannelOnVersionResponse(struct vmbus_channel_message_header *hdr)
+/**
+ * VmbusChannelOnVersionResponse - Version response handler
+ *
+ * This is invoked when we received a response to our initiate contact request.
+ * Find the matching request, copy the response and signal the requesting
+ * thread.
+ */
+static void VmbusChannelOnVersionResponse(
+ struct vmbus_channel_message_header *hdr)
{
- LIST_ENTRY* anchor;
- LIST_ENTRY* curr;
+ LIST_ENTRY *anchor;
+ LIST_ENTRY *curr;
struct vmbus_channel_msginfo *msgInfo;
struct vmbus_channel_message_header *requestHeader;
struct vmbus_channel_initiate_contact *initiate;
- struct vmbus_channel_version_response *versionResponse = (struct vmbus_channel_version_response *)hdr;
+ struct vmbus_channel_version_response *versionResponse;
unsigned long flags;
DPRINT_ENTER(VMBUS);
+ versionResponse = (struct vmbus_channel_version_response *)hdr;
spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags);
- ITERATE_LIST_ENTRIES(anchor, curr, &gVmbusConnection.ChannelMsgList)
- {
+ ITERATE_LIST_ENTRIES(anchor, curr, &gVmbusConnection.ChannelMsgList) {
msgInfo = (struct vmbus_channel_msginfo *)curr;
requestHeader = (struct vmbus_channel_message_header *)msgInfo->Msg;
- if (requestHeader->MessageType == ChannelMessageInitiateContact)
- {
+ if (requestHeader->MessageType ==
+ ChannelMessageInitiateContact) {
initiate = (struct vmbus_channel_initiate_contact *)requestHeader;
- memcpy(&msgInfo->Response.VersionResponse, versionResponse, sizeof(struct vmbus_channel_version_response));
+ memcpy(&msgInfo->Response.VersionResponse,
+ versionResponse,
+ sizeof(struct vmbus_channel_version_response));
osd_WaitEventSet(msgInfo->WaitEvent);
}
}
DPRINT_EXIT(VMBUS);
}
-
-/*++
-
-Name:
- VmbusOnChannelMessage()
-
-Description:
- Handler for channel protocol messages.
- This is invoked in the vmbus worker thread context.
-
---*/
+/**
+ * VmbusOnChannelMessage - Handler for channel protocol messages.
+ *
+ * This is invoked in the vmbus worker thread context.
+ */
void VmbusOnChannelMessage(void *Context)
{
struct hv_message *msg = Context;
DPRINT_ENTER(VMBUS);
hdr = (struct vmbus_channel_message_header *)msg->u.Payload;
- size=msg->Header.PayloadSize;
+ size = msg->Header.PayloadSize;
DPRINT_DBG(VMBUS, "message type %d size %d", hdr->MessageType, size);
- if (hdr->MessageType >= ChannelMessageCount)
- {
- DPRINT_ERR(VMBUS, "Received invalid channel message type %d size %d", hdr->MessageType, size);
+ if (hdr->MessageType >= ChannelMessageCount) {
+ DPRINT_ERR(VMBUS,
+ "Received invalid channel message type %d size %d",
+ hdr->MessageType, size);
print_hex_dump_bytes("", DUMP_PREFIX_NONE,
(unsigned char *)msg->u.Payload, size);
kfree(msg);
}
if (gChannelMessageTable[hdr->MessageType].messageHandler)
- {
gChannelMessageTable[hdr->MessageType].messageHandler(hdr);
- }
else
- {
- DPRINT_ERR(VMBUS, "Unhandled channel message type %d", hdr->MessageType);
- }
+ DPRINT_ERR(VMBUS, "Unhandled channel message type %d",
+ hdr->MessageType);
/* Free the msg that was allocated in VmbusOnMsgDPC() */
kfree(msg);
DPRINT_EXIT(VMBUS);
}
-
-/*++
-
-Name:
- VmbusChannelRequestOffers()
-
-Description:
- Send a request to get all our pending offers.
-
---*/
+/**
+ * VmbusChannelRequestOffers - Send a request to get all our pending offers.
+ */
int VmbusChannelRequestOffers(void)
{
- int ret=0;
struct vmbus_channel_message_header *msg;
struct vmbus_channel_msginfo *msgInfo;
+ int ret;
DPRINT_ENTER(VMBUS);
- msgInfo = kmalloc(sizeof(*msgInfo) + sizeof(struct vmbus_channel_message_header), GFP_KERNEL);
+ msgInfo = kmalloc(sizeof(*msgInfo) +
+ sizeof(struct vmbus_channel_message_header),
+ GFP_KERNEL);
ASSERT(msgInfo != NULL);
msgInfo->WaitEvent = osd_WaitEventCreate();
msg->MessageType = ChannelMessageRequestOffers;
/*SpinlockAcquire(gVmbusConnection.channelMsgLock);
- INSERT_TAIL_LIST(&gVmbusConnection.channelMsgList, &msgInfo->msgListEntry);
+ INSERT_TAIL_LIST(&gVmbusConnection.channelMsgList,
+ &msgInfo->msgListEntry);
SpinlockRelease(gVmbusConnection.channelMsgLock);*/
- ret = VmbusPostMessage(msg, sizeof(struct vmbus_channel_message_header));
- if (ret != 0)
- {
+ ret = VmbusPostMessage(msg,
+ sizeof(struct vmbus_channel_message_header));
+ if (ret != 0) {
DPRINT_ERR(VMBUS, "Unable to request offers - %d", ret);
/*SpinlockAcquire(gVmbusConnection.channelMsgLock);
Cleanup:
- if (msgInfo)
- {
+ if (msgInfo) {
kfree(msgInfo->WaitEvent);
kfree(msgInfo);
}
DPRINT_EXIT(VMBUS);
-
return ret;
}
-/*++
-
-Name:
- VmbusChannelReleaseUnattachedChannels()
-
-Description:
- Release channels that are unattached/unconnected ie (no drivers associated)
-
---*/
+/**
+ * VmbusChannelReleaseUnattachedChannels - Release channels that are unattached/unconnected ie (no drivers associated)
+ */
void VmbusChannelReleaseUnattachedChannels(void)
{
LIST_ENTRY *entry;
spin_lock_irqsave(&gVmbusConnection.channel_lock, flags);
- while (!IsListEmpty(&gVmbusConnection.ChannelList))
- {
+ while (!IsListEmpty(&gVmbusConnection.ChannelList)) {
entry = TOP_LIST_ENTRY(&gVmbusConnection.ChannelList);
- channel = CONTAINING_RECORD(entry, struct vmbus_channel, ListEntry);
+ channel = CONTAINING_RECORD(entry, struct vmbus_channel,
+ ListEntry);
if (channel == start)
break;
- if (!channel->DeviceObject->Driver)
- {
+ if (!channel->DeviceObject->Driver) {
REMOVE_ENTRY_LIST(&channel->ListEntry);
- DPRINT_INFO(VMBUS, "Releasing unattached device object %p", channel->DeviceObject);
+ DPRINT_INFO(VMBUS,
+ "Releasing unattached device object %p",
+ channel->DeviceObject);
VmbusChildDeviceRemove(channel->DeviceObject);
FreeVmbusChannel(channel);
- }
- else
- {
+ } else {
if (!start)
- {
start = channel;
- }
}
}
projects / mirror_ubuntu-jammy-kernel.git / commitdiff