diff options
| -rw-r--r-- | drivers/staging/hv/ChannelMgmt.c | 614 |
1 files changed, 267 insertions, 347 deletions
diff --git a/drivers/staging/hv/ChannelMgmt.c b/drivers/staging/hv/ChannelMgmt.c index 6868f2d..1045ff9 100644 --- a/drivers/staging/hv/ChannelMgmt.c +++ b/drivers/staging/hv/ChannelMgmt.c @@ -1,5 +1,4 @@ /* - * * Copyright (c) 2009, Microsoft Corporation. * * This program is free software; you can redistribute it and/or modify it @@ -18,18 +17,13 @@ * 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 { @@ -37,23 +31,20 @@ 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 */ { @@ -92,44 +83,37 @@ static const struct hv_guid gSupportedDeviceClasses[MAX_NUM_DEVICE_CLASSES_SUPPO }; /* 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); @@ -137,10 +121,8 @@ struct vmbus_channel *AllocVmbusChannel(void) 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; } @@ -148,18 +130,12 @@ struct vmbus_channel *AllocVmbusChannel(void) 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); @@ -172,46 +148,33 @@ static inline void ReleaseVmbusChannel(void* Context) 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); @@ -219,61 +182,65 @@ VmbusChannelProcessOffer( /* 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 @@ -284,99 +251,91 @@ VmbusChannelProcessOffer( 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; @@ -387,28 +346,23 @@ static void VmbusChannelOnOffer(struct vmbus_channel_message_header *hdr) 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; } @@ -419,40 +373,30 @@ static void VmbusChannelOnOfferRescind(struct vmbus_channel_message_header *hdr) 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; @@ -460,23 +404,25 @@ static void VmbusChannelOnOpenResult(struct vmbus_channel_message_header *hdr) 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; } @@ -487,21 +433,16 @@ static void VmbusChannelOnOpenResult(struct vmbus_channel_message_header *hdr) 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; @@ -511,24 +452,29 @@ static void VmbusChannelOnGpadlCreated(struct vmbus_channel_message_header *hdr) 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; } @@ -539,23 +485,19 @@ static void VmbusChannelOnGpadlCreated(struct vmbus_channel_message_header *hdr) 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; @@ -563,21 +505,24 @@ static void VmbusChannelOnGpadlTorndown(struct vmbus_channel_message_header *hdr 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; } @@ -588,41 +533,39 @@ static void VmbusChannelOnGpadlTorndown(struct vmbus_channel_message_header *hdr 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); } } @@ -631,17 +574,11 @@ static void VmbusChannelOnVersionResponse(struct vmbus_channel_message_header *h 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; @@ -651,13 +588,14 @@ void VmbusOnChannelMessage(void *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); @@ -665,38 +603,30 @@ void VmbusOnChannelMessage(void *Context) } 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(); @@ -705,12 +635,13 @@ int VmbusChannelRequestOffers(void) 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); @@ -727,26 +658,18 @@ int VmbusChannelRequestOffers(void) 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; @@ -756,28 +679,25 @@ void VmbusChannelReleaseUnattachedChannels(void) 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; - } } } |
