/*
- *
* 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"
/* Internal routines */
static int VmbusChannelCreateGpadlHeader(
- void * Kbuffer, /* must be phys and virt contiguous */
- u32 Size, /* page-size multiple */
+ void *Kbuffer, /* must be phys and virt contiguous */
+ u32 Size, /* page-size multiple */
struct vmbus_channel_msginfo **msgInfo,
- u32 *MessageCount
- );
+ u32 *MessageCount);
static void DumpVmbusChannel(struct vmbus_channel *channel);
static void VmbusChannelSetEvent(struct vmbus_channel *channel);
#if 0
-static void
-DumpMonitorPage(
- struct hv_monitor_page *MonitorPage
- )
+static void DumpMonitorPage(struct hv_monitor_page *MonitorPage)
{
- int i=0;
- int j=0;
+ int i = 0;
+ int j = 0;
- DPRINT_DBG(VMBUS, "monitorPage - %p, trigger state - %d", MonitorPage, MonitorPage->TriggerState);
+ DPRINT_DBG(VMBUS, "monitorPage - %p, trigger state - %d",
+ MonitorPage, MonitorPage->TriggerState);
- for (i=0; i<4; i++)
- {
- DPRINT_DBG(VMBUS, "trigger group (%d) - %llx", i, MonitorPage->TriggerGroup[i].AsUINT64);
- }
+ for (i = 0; i < 4; i++)
+ DPRINT_DBG(VMBUS, "trigger group (%d) - %llx", i,
+ MonitorPage->TriggerGroup[i].AsUINT64);
- for (i=0; i<4; i++)
- {
- for (j=0; j<32; j++)
- {
- DPRINT_DBG(VMBUS, "latency (%d)(%d) - %llx", i, j, MonitorPage->Latency[i][j]);
+ for (i = 0; i < 4; i++) {
+ for (j = 0; j < 32; j++) {
+ DPRINT_DBG(VMBUS, "latency (%d)(%d) - %llx", i, j,
+ MonitorPage->Latency[i][j]);
}
}
- for (i=0; i<4; i++)
- {
- for (j=0; j<32; j++)
- {
- DPRINT_DBG(VMBUS, "param-conn id (%d)(%d) - %d", i, j, MonitorPage->Parameter[i][j].ConnectionId.Asu32);
- DPRINT_DBG(VMBUS, "param-flag (%d)(%d) - %d", i, j, MonitorPage->Parameter[i][j].FlagNumber);
-
+ for (i = 0; i < 4; i++) {
+ for (j = 0; j < 32; j++) {
+ DPRINT_DBG(VMBUS, "param-conn id (%d)(%d) - %d", i, j,
+ MonitorPage->Parameter[i][j].ConnectionId.Asu32);
+ DPRINT_DBG(VMBUS, "param-flag (%d)(%d) - %d", i, j,
+ MonitorPage->Parameter[i][j].FlagNumber);
}
}
}
#endif
-/*++
-
-Name:
- VmbusChannelSetEvent()
-
-Description:
- Trigger an event notification on the specified channel.
-
---*/
+/**
+ * VmbusChannelSetEvent - Trigger an event notification on the specified channel.
+ */
static void VmbusChannelSetEvent(struct vmbus_channel *Channel)
{
struct hv_monitor_page *monitorPage;
DPRINT_ENTER(VMBUS);
- if (Channel->OfferMsg.MonitorAllocated)
- {
+ if (Channel->OfferMsg.MonitorAllocated) {
/* Each u32 represents 32 channels */
set_bit(Channel->OfferMsg.ChildRelId & 31,
(unsigned long *) gVmbusConnection.SendInterruptPage +
- (Channel->OfferMsg.ChildRelId >> 5) );
+ (Channel->OfferMsg.ChildRelId >> 5));
- monitorPage = (struct hv_monitor_page *)gVmbusConnection.MonitorPages;
+ monitorPage = gVmbusConnection.MonitorPages;
monitorPage++; /* Get the child to parent monitor page */
set_bit(Channel->MonitorBit,
- (unsigned long *) &monitorPage->TriggerGroup[Channel->MonitorGroup].Pending);
+ (unsigned long *)&monitorPage->TriggerGroup
+ [Channel->MonitorGroup].Pending);
- }
- else
- {
+ } else {
VmbusSetEvent(Channel->OfferMsg.ChildRelId);
}
DPRINT_ENTER(VMBUS);
- if (Channel->OfferMsg.MonitorAllocated)
- {
+ if (Channel->OfferMsg.MonitorAllocated) {
/* Each u32 represents 32 channels */
clear_bit(Channel->OfferMsg.ChildRelId & 31,
- (unsigned long *) gVmbusConnection.SendInterruptPage + (Channel->OfferMsg.ChildRelId >> 5));
+ (unsigned long *)gVmbusConnection.SendInterruptPage +
+ (Channel->OfferMsg.ChildRelId >> 5));
- monitorPage = (struct hv_monitor_page *)gVmbusConnection.MonitorPages;
+ monitorPage =
+ (struct hv_monitor_page *)gVmbusConnection.MonitorPages;
monitorPage++; /* Get the child to parent monitor page */
clear_bit(Channel->MonitorBit,
- (unsigned long *) &monitorPage->TriggerGroup[Channel->MonitorGroup].Pending);
+ (unsigned long *)&monitorPage->TriggerGroup
+ [Channel->MonitorGroup].Pending);
}
DPRINT_EXIT(VMBUS);
}
#endif
-/*++;
-
-Name:
- VmbusChannelGetDebugInfo()
-
-Description:
- Retrieve various channel debug info
-
---*/
+/**
+ * VmbusChannelGetDebugInfo -Retrieve various channel debug info
+ */
void VmbusChannelGetDebugInfo(struct vmbus_channel *Channel,
struct vmbus_channel_debug_info *DebugInfo)
{
struct hv_monitor_page *monitorPage;
- u8 monitorGroup = (u8)Channel->OfferMsg.MonitorId / 32;
- u8 monitorOffset = (u8)Channel->OfferMsg.MonitorId % 32;
+ u8 monitorGroup = (u8)Channel->OfferMsg.MonitorId / 32;
+ u8 monitorOffset = (u8)Channel->OfferMsg.MonitorId % 32;
/* u32 monitorBit = 1 << monitorOffset; */
DebugInfo->RelId = Channel->OfferMsg.ChildRelId;
DebugInfo->State = Channel->State;
- memcpy(&DebugInfo->InterfaceType, &Channel->OfferMsg.Offer.InterfaceType, sizeof(struct hv_guid));
- memcpy(&DebugInfo->InterfaceInstance, &Channel->OfferMsg.Offer.InterfaceInstance, sizeof(struct hv_guid));
+ memcpy(&DebugInfo->InterfaceType,
+ &Channel->OfferMsg.Offer.InterfaceType, sizeof(struct hv_guid));
+ memcpy(&DebugInfo->InterfaceInstance,
+ &Channel->OfferMsg.Offer.InterfaceInstance,
+ sizeof(struct hv_guid));
monitorPage = (struct hv_monitor_page *)gVmbusConnection.MonitorPages;
DebugInfo->MonitorId = Channel->OfferMsg.MonitorId;
- DebugInfo->ServerMonitorPending = monitorPage->TriggerGroup[monitorGroup].Pending;
- DebugInfo->ServerMonitorLatency = monitorPage->Latency[monitorGroup][ monitorOffset];
- DebugInfo->ServerMonitorConnectionId = monitorPage->Parameter[monitorGroup][ monitorOffset].ConnectionId.u.Id;
+ DebugInfo->ServerMonitorPending =
+ monitorPage->TriggerGroup[monitorGroup].Pending;
+ DebugInfo->ServerMonitorLatency =
+ monitorPage->Latency[monitorGroup][monitorOffset];
+ DebugInfo->ServerMonitorConnectionId =
+ monitorPage->Parameter[monitorGroup]
+ [monitorOffset].ConnectionId.u.Id;
monitorPage++;
- DebugInfo->ClientMonitorPending = monitorPage->TriggerGroup[monitorGroup].Pending;
- DebugInfo->ClientMonitorLatency = monitorPage->Latency[monitorGroup][ monitorOffset];
- DebugInfo->ClientMonitorConnectionId = monitorPage->Parameter[monitorGroup][ monitorOffset].ConnectionId.u.Id;
+ DebugInfo->ClientMonitorPending =
+ monitorPage->TriggerGroup[monitorGroup].Pending;
+ DebugInfo->ClientMonitorLatency =
+ monitorPage->Latency[monitorGroup][monitorOffset];
+ DebugInfo->ClientMonitorConnectionId =
+ monitorPage->Parameter[monitorGroup]
+ [monitorOffset].ConnectionId.u.Id;
RingBufferGetDebugInfo(&Channel->Inbound, &DebugInfo->Inbound);
RingBufferGetDebugInfo(&Channel->Outbound, &DebugInfo->Outbound);
}
-
-/*++;
-
-Name:
- VmbusChannelOpen()
-
-Description:
- Open the specified channel.
-
---*/
-int VmbusChannelOpen(struct vmbus_channel *NewChannel,
- u32 SendRingBufferSize,
- u32 RecvRingBufferSize,
- void * UserData,
- u32 UserDataLen,
- PFN_CHANNEL_CALLBACK pfnOnChannelCallback,
- void * Context
- )
+/**
+ * VmbusChannelOpen - Open the specified channel.
+ */
+int VmbusChannelOpen(struct vmbus_channel *NewChannel, u32 SendRingBufferSize,
+ u32 RecvRingBufferSize, void *UserData, u32 UserDataLen,
+ PFN_CHANNEL_CALLBACK pfnOnChannelCallback, void *Context)
{
- int ret=0;
struct vmbus_channel_open_channel *openMsg;
struct vmbus_channel_msginfo *openInfo;
void *in, *out;
unsigned long flags;
+ int ret;
DPRINT_ENTER(VMBUS);
/* Aligned to page size */
- ASSERT(!(SendRingBufferSize & (PAGE_SIZE -1)));
- ASSERT(!(RecvRingBufferSize & (PAGE_SIZE -1)));
+ ASSERT(!(SendRingBufferSize & (PAGE_SIZE - 1)));
+ ASSERT(!(RecvRingBufferSize & (PAGE_SIZE - 1)));
NewChannel->OnChannelCallback = pfnOnChannelCallback;
NewChannel->ChannelCallbackContext = Context;
/* Allocate the ring buffer */
- out = osd_PageAlloc((SendRingBufferSize + RecvRingBufferSize) >> PAGE_SHIFT);
- /* out = kzalloc(sendRingBufferSize + recvRingBufferSize, GFP_KERNEL); */
+ out = osd_PageAlloc((SendRingBufferSize + RecvRingBufferSize)
+ >> PAGE_SHIFT);
ASSERT(out);
ASSERT(((unsigned long)out & (PAGE_SIZE-1)) == 0);
- in = (void*)((unsigned long)out + SendRingBufferSize);
+ in = (void *)((unsigned long)out + SendRingBufferSize);
NewChannel->RingBufferPages = out;
- NewChannel->RingBufferPageCount = (SendRingBufferSize + RecvRingBufferSize) >> PAGE_SHIFT;
+ NewChannel->RingBufferPageCount = (SendRingBufferSize +
+ RecvRingBufferSize) >> PAGE_SHIFT;
RingBufferInit(&NewChannel->Outbound, out, SendRingBufferSize);
RingBufferInit(&NewChannel->Inbound, in, RecvRingBufferSize);
/* Establish the gpadl for the ring buffer */
- DPRINT_DBG(VMBUS, "Establishing ring buffer's gpadl for channel %p...", NewChannel);
+ DPRINT_DBG(VMBUS, "Establishing ring buffer's gpadl for channel %p...",
+ NewChannel);
NewChannel->RingBufferGpadlHandle = 0;
ret = VmbusChannelEstablishGpadl(NewChannel,
- NewChannel->Outbound.RingBuffer,
- SendRingBufferSize + RecvRingBufferSize,
- &NewChannel->RingBufferGpadlHandle);
-
- DPRINT_DBG(VMBUS, "channel %p <relid %d gpadl 0x%x send ring %p size %d recv ring %p size %d, downstreamoffset %d>",
- NewChannel,
- NewChannel->OfferMsg.ChildRelId,
- NewChannel->RingBufferGpadlHandle,
- NewChannel->Outbound.RingBuffer,
- NewChannel->Outbound.RingSize,
- NewChannel->Inbound.RingBuffer,
- NewChannel->Inbound.RingSize,
- SendRingBufferSize);
+ NewChannel->Outbound.RingBuffer,
+ SendRingBufferSize +
+ RecvRingBufferSize,
+ &NewChannel->RingBufferGpadlHandle);
+
+ DPRINT_DBG(VMBUS, "channel %p <relid %d gpadl 0x%x send ring %p "
+ "size %d recv ring %p size %d, downstreamoffset %d>",
+ NewChannel, NewChannel->OfferMsg.ChildRelId,
+ NewChannel->RingBufferGpadlHandle,
+ NewChannel->Outbound.RingBuffer,
+ NewChannel->Outbound.RingSize,
+ NewChannel->Inbound.RingBuffer,
+ NewChannel->Inbound.RingSize,
+ SendRingBufferSize);
/* Create and init the channel open message */
- openInfo = kmalloc(sizeof(*openInfo) + sizeof(struct vmbus_channel_open_channel), GFP_KERNEL);
+ openInfo = kmalloc(sizeof(*openInfo) +
+ sizeof(struct vmbus_channel_open_channel),
+ GFP_KERNEL);
ASSERT(openInfo != NULL);
openInfo->WaitEvent = osd_WaitEventCreate();
openMsg = (struct vmbus_channel_open_channel *)openInfo->Msg;
- openMsg->Header.MessageType = ChannelMessageOpenChannel;
- openMsg->OpenId = NewChannel->OfferMsg.ChildRelId; /* FIXME */
- openMsg->ChildRelId = NewChannel->OfferMsg.ChildRelId;
- openMsg->RingBufferGpadlHandle = NewChannel->RingBufferGpadlHandle;
- ASSERT(openMsg->RingBufferGpadlHandle);
- openMsg->DownstreamRingBufferPageOffset = SendRingBufferSize >> PAGE_SHIFT;
- openMsg->ServerContextAreaGpadlHandle = 0; /* TODO */
+ openMsg->Header.MessageType = ChannelMessageOpenChannel;
+ openMsg->OpenId = NewChannel->OfferMsg.ChildRelId; /* FIXME */
+ openMsg->ChildRelId = NewChannel->OfferMsg.ChildRelId;
+ openMsg->RingBufferGpadlHandle = NewChannel->RingBufferGpadlHandle;
+ ASSERT(openMsg->RingBufferGpadlHandle);
+ openMsg->DownstreamRingBufferPageOffset = SendRingBufferSize >>
+ PAGE_SHIFT;
+ openMsg->ServerContextAreaGpadlHandle = 0; /* TODO */
ASSERT(UserDataLen <= MAX_USER_DEFINED_BYTES);
if (UserDataLen)
- {
memcpy(openMsg->UserData, UserData, UserDataLen);
- }
spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags);
- INSERT_TAIL_LIST(&gVmbusConnection.ChannelMsgList, &openInfo->MsgListEntry);
+ INSERT_TAIL_LIST(&gVmbusConnection.ChannelMsgList,
+ &openInfo->MsgListEntry);
spin_unlock_irqrestore(&gVmbusConnection.channelmsg_lock, flags);
DPRINT_DBG(VMBUS, "Sending channel open msg...");
- ret = VmbusPostMessage(openMsg, sizeof(struct vmbus_channel_open_channel));
- if (ret != 0)
- {
+ ret = VmbusPostMessage(openMsg,
+ sizeof(struct vmbus_channel_open_channel));
+ if (ret != 0) {
DPRINT_ERR(VMBUS, "unable to open channel - %d", ret);
goto Cleanup;
}
osd_WaitEventWait(openInfo->WaitEvent);
if (openInfo->Response.OpenResult.Status == 0)
- {
DPRINT_INFO(VMBUS, "channel <%p> open success!!", NewChannel);
- }
else
- {
- DPRINT_INFO(VMBUS, "channel <%p> open failed - %d!!", NewChannel, openInfo->Response.OpenResult.Status);
- }
+ DPRINT_INFO(VMBUS, "channel <%p> open failed - %d!!",
+ NewChannel, openInfo->Response.OpenResult.Status);
Cleanup:
spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags);
return 0;
}
-/*++;
-
-Name:
- DumpGpadlBody()
-
-Description:
- Dump the gpadl body message to the console for debugging purposes.
-
---*/
+/**
+ * DumpGpadlBody - Dump the gpadl body message to the console for debugging purposes.
+ */
static void DumpGpadlBody(struct vmbus_channel_gpadl_body *Gpadl, u32 Len)
{
- int i=0;
- int pfnCount=0;
+ int i;
+ int pfnCount;
- pfnCount = (Len - sizeof(struct vmbus_channel_gpadl_body))/ sizeof(u64);
+ pfnCount = (Len - sizeof(struct vmbus_channel_gpadl_body)) /
+ sizeof(u64);
DPRINT_DBG(VMBUS, "gpadl body - len %d pfn count %d", Len, pfnCount);
- for (i=0; i< pfnCount; i++)
- {
- DPRINT_DBG(VMBUS, "gpadl body - %d) pfn %llu", i, Gpadl->Pfn[i]);
- }
+ for (i = 0; i < pfnCount; i++)
+ DPRINT_DBG(VMBUS, "gpadl body - %d) pfn %llu",
+ i, Gpadl->Pfn[i]);
}
-
-/*++;
-
-Name:
- DumpGpadlHeader()
-
-Description:
- Dump the gpadl header message to the console for debugging purposes.
-
---*/
+/**
+ * DumpGpadlHeader - Dump the gpadl header message to the console for debugging purposes.
+ */
static void DumpGpadlHeader(struct vmbus_channel_gpadl_header *Gpadl)
{
- int i=0,j=0;
- int pageCount=0;
-
+ int i, j;
+ int pageCount;
- DPRINT_DBG(VMBUS, "gpadl header - relid %d, range count %d, range buflen %d",
- Gpadl->ChildRelId,
- Gpadl->RangeCount,
- Gpadl->RangeBufLen);
- for (i=0; i< Gpadl->RangeCount; i++)
- {
+ DPRINT_DBG(VMBUS,
+ "gpadl header - relid %d, range count %d, range buflen %d",
+ Gpadl->ChildRelId, Gpadl->RangeCount, Gpadl->RangeBufLen);
+ for (i = 0; i < Gpadl->RangeCount; i++) {
pageCount = Gpadl->Range[i].ByteCount >> PAGE_SHIFT;
- pageCount = (pageCount > 26)? 26 : pageCount;
+ pageCount = (pageCount > 26) ? 26 : pageCount;
- DPRINT_DBG(VMBUS, "gpadl range %d - len %d offset %d page count %d",
- i, Gpadl->Range[i].ByteCount, Gpadl->Range[i].ByteOffset, pageCount);
+ DPRINT_DBG(VMBUS, "gpadl range %d - len %d offset %d "
+ "page count %d", i, Gpadl->Range[i].ByteCount,
+ Gpadl->Range[i].ByteOffset, pageCount);
- for (j=0; j< pageCount; j++)
- {
- DPRINT_DBG(VMBUS, "%d) pfn %llu", j, Gpadl->Range[i].PfnArray[j]);
- }
+ for (j = 0; j < pageCount; j++)
+ DPRINT_DBG(VMBUS, "%d) pfn %llu", j,
+ Gpadl->Range[i].PfnArray[j]);
}
}
-/*++;
-
-Name:
- VmbusChannelCreateGpadlHeader()
-
-Description:
- Creates a gpadl for the specified buffer
-
---*/
-static int
-VmbusChannelCreateGpadlHeader(
- void * Kbuffer, /* from kmalloc() */
- u32 Size, /* page-size multiple */
- struct vmbus_channel_msginfo **MsgInfo,
- u32 *MessageCount)
+/**
+ * VmbusChannelCreateGpadlHeader - Creates a gpadl for the specified buffer
+ */
+static int VmbusChannelCreateGpadlHeader(void *Kbuffer, u32 Size,
+ struct vmbus_channel_msginfo **MsgInfo,
+ u32 *MessageCount)
{
int i;
int pageCount;
- unsigned long long pfn;
+ unsigned long long pfn;
struct vmbus_channel_gpadl_header *gpaHeader;
struct vmbus_channel_gpadl_body *gpadlBody;
struct vmbus_channel_msginfo *msgHeader;
struct vmbus_channel_msginfo *msgBody;
- u32 msgSize;
+ u32 msgSize;
int pfnSum, pfnCount, pfnLeft, pfnCurr, pfnSize;
- /* ASSERT( (kbuffer & (PAGE_SIZE-1)) == 0); */
- ASSERT( (Size & (PAGE_SIZE-1)) == 0);
+ /* ASSERT((kbuffer & (PAGE_SIZE-1)) == 0); */
+ ASSERT((Size & (PAGE_SIZE-1)) == 0);
pageCount = Size >> PAGE_SHIFT;
pfn = virt_to_phys(Kbuffer) >> PAGE_SHIFT;
/* do we need a gpadl body msg */
- pfnSize = MAX_SIZE_CHANNEL_MESSAGE - sizeof(struct vmbus_channel_gpadl_header) - sizeof(struct gpa_range);
+ pfnSize = MAX_SIZE_CHANNEL_MESSAGE -
+ sizeof(struct vmbus_channel_gpadl_header) -
+ sizeof(struct gpa_range);
pfnCount = pfnSize / sizeof(u64);
- if (pageCount > pfnCount) /* we need a gpadl body */
- {
+ if (pageCount > pfnCount) {
+ /* we need a gpadl body */
/* fill in the header */
- msgSize = sizeof(struct vmbus_channel_msginfo) + sizeof(struct vmbus_channel_gpadl_header) + sizeof(struct gpa_range) + pfnCount*sizeof(u64);
+ msgSize = sizeof(struct vmbus_channel_msginfo) +
+ sizeof(struct vmbus_channel_gpadl_header) +
+ sizeof(struct gpa_range) + pfnCount * sizeof(u64);
msgHeader = kzalloc(msgSize, GFP_KERNEL);
INITIALIZE_LIST_HEAD(&msgHeader->SubMsgList);
- msgHeader->MessageSize=msgSize;
+ msgHeader->MessageSize = msgSize;
gpaHeader = (struct vmbus_channel_gpadl_header *)msgHeader->Msg;
gpaHeader->RangeCount = 1;
- gpaHeader->RangeBufLen = sizeof(struct gpa_range) + pageCount*sizeof(u64);
+ gpaHeader->RangeBufLen = sizeof(struct gpa_range) +
+ pageCount * sizeof(u64);
gpaHeader->Range[0].ByteOffset = 0;
gpaHeader->Range[0].ByteCount = Size;
- for (i=0; i<pfnCount; i++)
- {
+ for (i = 0; i < pfnCount; i++)
gpaHeader->Range[0].PfnArray[i] = pfn+i;
- }
*MsgInfo = msgHeader;
*MessageCount = 1;
pfnLeft = pageCount - pfnCount;
/* how many pfns can we fit */
- pfnSize = MAX_SIZE_CHANNEL_MESSAGE - sizeof(struct vmbus_channel_gpadl_body);
+ pfnSize = MAX_SIZE_CHANNEL_MESSAGE -
+ sizeof(struct vmbus_channel_gpadl_body);
pfnCount = pfnSize / sizeof(u64);
/* fill in the body */
- while (pfnLeft)
- {
+ while (pfnLeft) {
if (pfnLeft > pfnCount)
- {
pfnCurr = pfnCount;
- }
else
- {
pfnCurr = pfnLeft;
- }
- msgSize = sizeof(struct vmbus_channel_msginfo) + sizeof(struct vmbus_channel_gpadl_body) + pfnCurr*sizeof(u64);
+ msgSize = sizeof(struct vmbus_channel_msginfo) +
+ sizeof(struct vmbus_channel_gpadl_body) +
+ pfnCurr * sizeof(u64);
msgBody = kzalloc(msgSize, GFP_KERNEL);
ASSERT(msgBody);
msgBody->MessageSize = msgSize;
(*MessageCount)++;
- gpadlBody = (struct vmbus_channel_gpadl_body *)msgBody->Msg;
-
- /* FIXME: Gpadl is u32 and we are using a pointer which could be 64-bit */
+ gpadlBody =
+ (struct vmbus_channel_gpadl_body *)msgBody->Msg;
+
+ /*
+ * FIXME:
+ * Gpadl is u32 and we are using a pointer which could
+ * be 64-bit
+ */
/* gpadlBody->Gpadl = kbuffer; */
- for (i=0; i<pfnCurr; i++)
- {
+ for (i = 0; i < pfnCurr; i++)
gpadlBody->Pfn[i] = pfn + pfnSum + i;
- }
/* add to msg header */
- INSERT_TAIL_LIST(&msgHeader->SubMsgList, &msgBody->MsgListEntry);
+ INSERT_TAIL_LIST(&msgHeader->SubMsgList,
+ &msgBody->MsgListEntry);
pfnSum += pfnCurr;
pfnLeft -= pfnCurr;
}
- }
- else
- {
+ } else {
/* everything fits in a header */
- msgSize = sizeof(struct vmbus_channel_msginfo) + sizeof(struct vmbus_channel_gpadl_header) + sizeof(struct gpa_range) + pageCount*sizeof(u64);
+ msgSize = sizeof(struct vmbus_channel_msginfo) +
+ sizeof(struct vmbus_channel_gpadl_header) +
+ sizeof(struct gpa_range) + pageCount * sizeof(u64);
msgHeader = kzalloc(msgSize, GFP_KERNEL);
- msgHeader->MessageSize=msgSize;
+ msgHeader->MessageSize = msgSize;
gpaHeader = (struct vmbus_channel_gpadl_header *)msgHeader->Msg;
gpaHeader->RangeCount = 1;
- gpaHeader->RangeBufLen = sizeof(struct gpa_range) + pageCount*sizeof(u64);
+ gpaHeader->RangeBufLen = sizeof(struct gpa_range) +
+ pageCount * sizeof(u64);
gpaHeader->Range[0].ByteOffset = 0;
gpaHeader->Range[0].ByteCount = Size;
- for (i=0; i<pageCount; i++)
- {
+ for (i = 0; i < pageCount; i++)
gpaHeader->Range[0].PfnArray[i] = pfn+i;
- }
*MsgInfo = msgHeader;
*MessageCount = 1;
return 0;
}
-
-/*++;
-
-Name:
- VmbusChannelEstablishGpadl()
-
-Description:
- Estabish a GPADL for the specified buffer
-
---*/
-int VmbusChannelEstablishGpadl(struct vmbus_channel *Channel,
- void * Kbuffer, /* from kmalloc() */
- u32 Size, /* page-size multiple */
- u32 *GpadlHandle
- )
+/**
+ * VmbusChannelEstablishGpadl - Estabish a GPADL for the specified buffer
+ *
+ * @Channel: a channel
+ * @Kbuffer: from kmalloc
+ * @Size: page-size multiple
+ * @GpadlHandle: some funky thing
+ */
+int VmbusChannelEstablishGpadl(struct vmbus_channel *Channel, void *Kbuffer,
+ u32 Size, u32 *GpadlHandle)
{
- int ret=0;
struct vmbus_channel_gpadl_header *gpadlMsg;
struct vmbus_channel_gpadl_body *gpadlBody;
/* struct vmbus_channel_gpadl_created *gpadlCreated; */
-
struct vmbus_channel_msginfo *msgInfo;
struct vmbus_channel_msginfo *subMsgInfo;
-
u32 msgCount;
- LIST_ENTRY* anchor;
- LIST_ENTRY* curr;
+ LIST_ENTRY *anchor;
+ LIST_ENTRY *curr;
u32 nextGpadlHandle;
unsigned long flags;
+ int ret;
DPRINT_ENTER(VMBUS);
VmbusChannelCreateGpadlHeader(Kbuffer, Size, &msgInfo, &msgCount);
ASSERT(msgInfo != NULL);
- ASSERT(msgCount >0);
+ ASSERT(msgCount > 0);
msgInfo->WaitEvent = osd_WaitEventCreate();
gpadlMsg = (struct vmbus_channel_gpadl_header *)msgInfo->Msg;
DumpGpadlHeader(gpadlMsg);
spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags);
- INSERT_TAIL_LIST(&gVmbusConnection.ChannelMsgList, &msgInfo->MsgListEntry);
+ INSERT_TAIL_LIST(&gVmbusConnection.ChannelMsgList,
+ &msgInfo->MsgListEntry);
spin_unlock_irqrestore(&gVmbusConnection.channelmsg_lock, flags);
- DPRINT_DBG(VMBUS, "buffer %p, size %d msg cnt %d", Kbuffer, Size, msgCount);
+ DPRINT_DBG(VMBUS, "buffer %p, size %d msg cnt %d",
+ Kbuffer, Size, msgCount);
- DPRINT_DBG(VMBUS, "Sending GPADL Header - len %zd", msgInfo->MessageSize - sizeof(*msgInfo));
+ DPRINT_DBG(VMBUS, "Sending GPADL Header - len %zd",
+ msgInfo->MessageSize - sizeof(*msgInfo));
- ret = VmbusPostMessage(gpadlMsg, msgInfo->MessageSize - sizeof(*msgInfo));
- if (ret != 0)
- {
+ ret = VmbusPostMessage(gpadlMsg, msgInfo->MessageSize -
+ sizeof(*msgInfo));
+ if (ret != 0) {
DPRINT_ERR(VMBUS, "Unable to open channel - %d", ret);
goto Cleanup;
}
- if (msgCount>1)
- {
- ITERATE_LIST_ENTRIES(anchor, curr, &msgInfo->SubMsgList)
- {
+ if (msgCount > 1) {
+ ITERATE_LIST_ENTRIES(anchor, curr, &msgInfo->SubMsgList) {
subMsgInfo = (struct vmbus_channel_msginfo *)curr;
- gpadlBody = (struct vmbus_channel_gpadl_body *)subMsgInfo->Msg;
+ gpadlBody =
+ (struct vmbus_channel_gpadl_body *)subMsgInfo->Msg;
gpadlBody->Header.MessageType = ChannelMessageGpadlBody;
gpadlBody->Gpadl = nextGpadlHandle;
- DPRINT_DBG(VMBUS, "Sending GPADL Body - len %zd", subMsgInfo->MessageSize - sizeof(*subMsgInfo));
+ DPRINT_DBG(VMBUS, "Sending GPADL Body - len %zd",
+ subMsgInfo->MessageSize -
+ sizeof(*subMsgInfo));
- DumpGpadlBody(gpadlBody, subMsgInfo->MessageSize - sizeof(*subMsgInfo));
- ret = VmbusPostMessage(gpadlBody, subMsgInfo->MessageSize - sizeof(*subMsgInfo));
+ DumpGpadlBody(gpadlBody, subMsgInfo->MessageSize -
+ sizeof(*subMsgInfo));
+ ret = VmbusPostMessage(gpadlBody,
+ subMsgInfo->MessageSize -
+ sizeof(*subMsgInfo));
ASSERT(ret == 0);
}
}
osd_WaitEventWait(msgInfo->WaitEvent);
/* At this point, we received the gpadl created msg */
- DPRINT_DBG(VMBUS, "Received GPADL created (relid %d, status %d handle %x)",
- Channel->OfferMsg.ChildRelId,
- msgInfo->Response.GpadlCreated.CreationStatus,
- gpadlMsg->Gpadl);
+ DPRINT_DBG(VMBUS, "Received GPADL created "
+ "(relid %d, status %d handle %x)",
+ Channel->OfferMsg.ChildRelId,
+ msgInfo->Response.GpadlCreated.CreationStatus,
+ gpadlMsg->Gpadl);
*GpadlHandle = gpadlMsg->Gpadl;
return ret;
}
-
-
-/*++;
-
-Name:
- VmbusChannelTeardownGpadl()
-
-Description:
- Teardown the specified GPADL handle
-
---*/
+/**
+ * VmbusChannelTeardownGpadl -Teardown the specified GPADL handle
+ */
int VmbusChannelTeardownGpadl(struct vmbus_channel *Channel, u32 GpadlHandle)
{
- int ret=0;
struct vmbus_channel_gpadl_teardown *msg;
struct vmbus_channel_msginfo *info;
unsigned long flags;
+ int ret;
DPRINT_ENTER(VMBUS);
ASSERT(GpadlHandle != 0);
- info = kmalloc(sizeof(*info) + sizeof(struct vmbus_channel_gpadl_teardown), GFP_KERNEL);
+ info = kmalloc(sizeof(*info) +
+ sizeof(struct vmbus_channel_gpadl_teardown), GFP_KERNEL);
ASSERT(info != NULL);
info->WaitEvent = osd_WaitEventCreate();
msg = (struct vmbus_channel_gpadl_teardown *)info->Msg;
msg->Header.MessageType = ChannelMessageGpadlTeardown;
- msg->ChildRelId = Channel->OfferMsg.ChildRelId;
- msg->Gpadl = GpadlHandle;
+ msg->ChildRelId = Channel->OfferMsg.ChildRelId;
+ msg->Gpadl = GpadlHandle;
spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags);
INSERT_TAIL_LIST(&gVmbusConnection.ChannelMsgList, &info->MsgListEntry);
spin_unlock_irqrestore(&gVmbusConnection.channelmsg_lock, flags);
- ret = VmbusPostMessage(msg, sizeof(struct vmbus_channel_gpadl_teardown));
- if (ret != 0)
- {
+ ret = VmbusPostMessage(msg,
+ sizeof(struct vmbus_channel_gpadl_teardown));
+ if (ret != 0) {
/* TODO: */
+ /* something... */
}
osd_WaitEventWait(info->WaitEvent);
return ret;
}
-
-/*++
-
-Name:
- VmbusChannelClose()
-
-Description:
- Close the specified channel
-
---*/
+/**
+ * VmbusChannelClose - Close the specified channel
+ */
void VmbusChannelClose(struct vmbus_channel *Channel)
{
- int ret=0;
struct vmbus_channel_close_channel *msg;
struct vmbus_channel_msginfo *info;
unsigned long flags;
+ int ret;
DPRINT_ENTER(VMBUS);
del_timer(&Channel->poll_timer);
/* Send a closing message */
- info = kmalloc(sizeof(*info) + sizeof(struct vmbus_channel_close_channel), GFP_KERNEL);
+ info = kmalloc(sizeof(*info) +
+ sizeof(struct vmbus_channel_close_channel), GFP_KERNEL);
ASSERT(info != NULL);
/* info->waitEvent = osd_WaitEventCreate(); */
msg = (struct vmbus_channel_close_channel *)info->Msg;
- msg->Header.MessageType = ChannelMessageCloseChannel;
- msg->ChildRelId = Channel->OfferMsg.ChildRelId;
+ msg->Header.MessageType = ChannelMessageCloseChannel;
+ msg->ChildRelId = Channel->OfferMsg.ChildRelId;
ret = VmbusPostMessage(msg, sizeof(struct vmbus_channel_close_channel));
- if (ret != 0)
- {
+ if (ret != 0) {
/* TODO: */
+ /* something... */
}
/* Tear down the gpadl for the channel's ring buffer */
if (Channel->RingBufferGpadlHandle)
- {
- VmbusChannelTeardownGpadl(Channel, Channel->RingBufferGpadlHandle);
- }
+ VmbusChannelTeardownGpadl(Channel,
+ Channel->RingBufferGpadlHandle);
/* TODO: Send a msg to release the childRelId */
kfree(info);
-
/*
* If we are closing the channel during an error path in
* opening the channel, don't free the channel since the
* caller will free the channel
*/
- if (Channel->State == CHANNEL_OPEN_STATE)
- {
+ if (Channel->State == CHANNEL_OPEN_STATE) {
spin_lock_irqsave(&gVmbusConnection.channel_lock, flags);
REMOVE_ENTRY_LIST(&Channel->ListEntry);
spin_unlock_irqrestore(&gVmbusConnection.channel_lock, flags);
DPRINT_EXIT(VMBUS);
}
-
-/*++
-
-Name:
- VmbusChannelSendPacket()
-
-Description:
- Send the specified buffer on the given channel
-
---*/
-int VmbusChannelSendPacket(struct vmbus_channel *Channel,
- const void * Buffer,
- u32 BufferLen,
- u64 RequestId,
- enum vmbus_packet_type Type,
- u32 Flags
-)
+/**
+ * VmbusChannelSendPacket - Send the specified buffer on the given channel
+ */
+int VmbusChannelSendPacket(struct vmbus_channel *Channel, const void *Buffer,
+ u32 BufferLen, u64 RequestId,
+ enum vmbus_packet_type Type, u32 Flags)
{
- int ret=0;
struct vmpacket_descriptor desc;
u32 packetLen = sizeof(struct vmpacket_descriptor) + BufferLen;
u32 packetLenAligned = ALIGN_UP(packetLen, sizeof(u64));
struct scatterlist bufferList[3];
- u64 alignedData=0;
+ u64 alignedData = 0;
+ int ret;
DPRINT_ENTER(VMBUS);
- DPRINT_DBG(VMBUS, "channel %p buffer %p len %d", Channel, Buffer, BufferLen);
+ DPRINT_DBG(VMBUS, "channel %p buffer %p len %d",
+ Channel, Buffer, BufferLen);
DumpVmbusChannel(Channel);
/* Setup the descriptor */
desc.Type = Type; /* VmbusPacketTypeDataInBand; */
desc.Flags = Flags; /* VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED; */
- desc.DataOffset8 = sizeof(struct vmpacket_descriptor) >> 3; /* in 8-bytes granularity */
+ /* in 8-bytes granularity */
+ desc.DataOffset8 = sizeof(struct vmpacket_descriptor) >> 3;
desc.Length8 = (u16)(packetLenAligned >> 3);
desc.TransactionId = RequestId;
- sg_init_table(bufferList,3);
+ sg_init_table(bufferList, 3);
sg_set_buf(&bufferList[0], &desc, sizeof(struct vmpacket_descriptor));
sg_set_buf(&bufferList[1], Buffer, BufferLen);
sg_set_buf(&bufferList[2], &alignedData, packetLenAligned - packetLen);
- ret = RingBufferWrite(
- &Channel->Outbound,
- bufferList,
- 3);
+ ret = RingBufferWrite(&Channel->Outbound, bufferList, 3);
/* TODO: We should determine if this is optional */
if (ret == 0 && !GetRingBufferInterruptMask(&Channel->Outbound))
- {
VmbusChannelSetEvent(Channel);
- }
DPRINT_EXIT(VMBUS);
return ret;
}
-
-/*++
-
-Name:
- VmbusChannelSendPacketPageBuffer()
-
-Description:
- Send a range of single-page buffer packets using a GPADL Direct packet type.
-
---*/
+/**
+ * VmbusChannelSendPacketPageBuffer - Send a range of single-page buffer packets using a GPADL Direct packet type.
+ */
int VmbusChannelSendPacketPageBuffer(struct vmbus_channel *Channel,
- struct hv_page_buffer PageBuffers[],
- u32 PageCount,
- void * Buffer,
- u32 BufferLen,
- u64 RequestId
-)
+ struct hv_page_buffer PageBuffers[],
+ u32 PageCount, void *Buffer, u32 BufferLen,
+ u64 RequestId)
{
- int ret=0;
- int i=0;
+ int ret;
+ int i;
struct VMBUS_CHANNEL_PACKET_PAGE_BUFFER desc;
u32 descSize;
u32 packetLen;
u32 packetLenAligned;
struct scatterlist bufferList[3];
- u64 alignedData=0;
+ u64 alignedData = 0;
DPRINT_ENTER(VMBUS);
DumpVmbusChannel(Channel);
- /* Adjust the size down since VMBUS_CHANNEL_PACKET_PAGE_BUFFER is the largest size we support */
- descSize = sizeof(struct VMBUS_CHANNEL_PACKET_PAGE_BUFFER) - ((MAX_PAGE_BUFFER_COUNT - PageCount)*sizeof(struct hv_page_buffer));
+ /*
+ * Adjust the size down since VMBUS_CHANNEL_PACKET_PAGE_BUFFER is the
+ * largest size we support
+ */
+ descSize = sizeof(struct VMBUS_CHANNEL_PACKET_PAGE_BUFFER) -
+ ((MAX_PAGE_BUFFER_COUNT - PageCount) *
+ sizeof(struct hv_page_buffer));
packetLen = descSize + BufferLen;
packetLenAligned = ALIGN_UP(packetLen, sizeof(u64));
desc.TransactionId = RequestId;
desc.RangeCount = PageCount;
- for (i=0; i<PageCount; i++)
- {
+ for (i = 0; i < PageCount; i++) {
desc.Range[i].Length = PageBuffers[i].Length;
desc.Range[i].Offset = PageBuffers[i].Offset;
desc.Range[i].Pfn = PageBuffers[i].Pfn;
}
- sg_init_table(bufferList,3);
+ sg_init_table(bufferList, 3);
sg_set_buf(&bufferList[0], &desc, descSize);
sg_set_buf(&bufferList[1], Buffer, BufferLen);
sg_set_buf(&bufferList[2], &alignedData, packetLenAligned - packetLen);
- ret = RingBufferWrite(
- &Channel->Outbound,
- bufferList,
- 3);
+ ret = RingBufferWrite(&Channel->Outbound, bufferList, 3);
/* TODO: We should determine if this is optional */
if (ret == 0 && !GetRingBufferInterruptMask(&Channel->Outbound))
- {
VmbusChannelSetEvent(Channel);
- }
DPRINT_EXIT(VMBUS);
return ret;
}
-
-
-/*++
-
-Name:
- VmbusChannelSendPacketMultiPageBuffer()
-
-Description:
- Send a multi-page buffer packet using a GPADL Direct packet type.
-
---*/
+/**
+ * VmbusChannelSendPacketMultiPageBuffer - Send a multi-page buffer packet using a GPADL Direct packet type.
+ */
int VmbusChannelSendPacketMultiPageBuffer(struct vmbus_channel *Channel,
- struct hv_multipage_buffer *MultiPageBuffer,
- void * Buffer,
- u32 BufferLen,
- u64 RequestId
-)
+ struct hv_multipage_buffer *MultiPageBuffer,
+ void *Buffer, u32 BufferLen, u64 RequestId)
{
- int ret=0;
+ int ret;
struct VMBUS_CHANNEL_PACKET_MULITPAGE_BUFFER desc;
u32 descSize;
u32 packetLen;
u32 packetLenAligned;
struct scatterlist bufferList[3];
- u64 alignedData=0;
- u32 PfnCount = NUM_PAGES_SPANNED(MultiPageBuffer->Offset, MultiPageBuffer->Length);
+ u64 alignedData = 0;
+ u32 PfnCount = NUM_PAGES_SPANNED(MultiPageBuffer->Offset,
+ MultiPageBuffer->Length);
DPRINT_ENTER(VMBUS);
DumpVmbusChannel(Channel);
- DPRINT_DBG(VMBUS, "data buffer - offset %u len %u pfn count %u", MultiPageBuffer->Offset, MultiPageBuffer->Length, PfnCount);
+ DPRINT_DBG(VMBUS, "data buffer - offset %u len %u pfn count %u",
+ MultiPageBuffer->Offset, MultiPageBuffer->Length, PfnCount);
ASSERT(PfnCount > 0);
ASSERT(PfnCount <= MAX_MULTIPAGE_BUFFER_COUNT);
- /* Adjust the size down since VMBUS_CHANNEL_PACKET_MULITPAGE_BUFFER is the largest size we support */
- descSize = sizeof(struct VMBUS_CHANNEL_PACKET_MULITPAGE_BUFFER) - ((MAX_MULTIPAGE_BUFFER_COUNT - PfnCount)*sizeof(u64));
+ /*
+ * Adjust the size down since VMBUS_CHANNEL_PACKET_MULITPAGE_BUFFER is
+ * the largest size we support
+ */
+ descSize = sizeof(struct VMBUS_CHANNEL_PACKET_MULITPAGE_BUFFER) -
+ ((MAX_MULTIPAGE_BUFFER_COUNT - PfnCount) *
+ sizeof(u64));
packetLen = descSize + BufferLen;
packetLenAligned = ALIGN_UP(packetLen, sizeof(u64));
desc.Range.Length = MultiPageBuffer->Length;
desc.Range.Offset = MultiPageBuffer->Offset;
- memcpy(desc.Range.PfnArray, MultiPageBuffer->PfnArray, PfnCount*sizeof(u64));
+ memcpy(desc.Range.PfnArray, MultiPageBuffer->PfnArray,
+ PfnCount * sizeof(u64));
- sg_init_table(bufferList,3);
+ sg_init_table(bufferList, 3);
sg_set_buf(&bufferList[0], &desc, descSize);
sg_set_buf(&bufferList[1], Buffer, BufferLen);
sg_set_buf(&bufferList[2], &alignedData, packetLenAligned - packetLen);
- ret = RingBufferWrite(
- &Channel->Outbound,
- bufferList,
- 3);
+ ret = RingBufferWrite(&Channel->Outbound, bufferList, 3);
/* TODO: We should determine if this is optional */
if (ret == 0 && !GetRingBufferInterruptMask(&Channel->Outbound))
- {
VmbusChannelSetEvent(Channel);
- }
DPRINT_EXIT(VMBUS);
return ret;
}
-
-/*++
-
-Name:
- VmbusChannelRecvPacket()
-
-Description:
- Retrieve the user packet on the specified channel
-
---*/
+/**
+ * VmbusChannelRecvPacket - Retrieve the user packet on the specified channel
+ */
/* TODO: Do we ever receive a gpa direct packet other than the ones we send ? */
-int VmbusChannelRecvPacket(struct vmbus_channel *Channel,
- void *Buffer,
- u32 BufferLen,
- u32 *BufferActualLen,
- u64 *RequestId)
+int VmbusChannelRecvPacket(struct vmbus_channel *Channel, void *Buffer,
+ u32 BufferLen, u32 *BufferActualLen, u64 *RequestId)
{
struct vmpacket_descriptor desc;
u32 packetLen;
spin_lock_irqsave(&Channel->inbound_lock, flags);
- ret = RingBufferPeek(&Channel->Inbound, &desc, sizeof(struct vmpacket_descriptor));
- if (ret != 0)
- {
+ ret = RingBufferPeek(&Channel->Inbound, &desc,
+ sizeof(struct vmpacket_descriptor));
+ if (ret != 0) {
spin_unlock_irqrestore(&Channel->inbound_lock, flags);
/* DPRINT_DBG(VMBUS, "nothing to read!!"); */
userLen = packetLen - (desc.DataOffset8 << 3);
/* ASSERT(userLen > 0); */
- DPRINT_DBG(VMBUS, "packet received on channel %p relid %d <type %d flag %d tid %llx pktlen %d datalen %d> ",
- Channel,
- Channel->OfferMsg.ChildRelId,
- desc.Type,
- desc.Flags,
- desc.TransactionId, packetLen, userLen);
+ DPRINT_DBG(VMBUS, "packet received on channel %p relid %d <type %d "
+ "flag %d tid %llx pktlen %d datalen %d> ",
+ Channel, Channel->OfferMsg.ChildRelId, desc.Type,
+ desc.Flags, desc.TransactionId, packetLen, userLen);
*BufferActualLen = userLen;
- if (userLen > BufferLen)
- {
+ if (userLen > BufferLen) {
spin_unlock_irqrestore(&Channel->inbound_lock, flags);
- DPRINT_ERR(VMBUS, "buffer too small - got %d needs %d", BufferLen, userLen);
+ DPRINT_ERR(VMBUS, "buffer too small - got %d needs %d",
+ BufferLen, userLen);
DPRINT_EXIT(VMBUS);
return -1;
*RequestId = desc.TransactionId;
/* Copy over the packet to the user buffer */
- ret = RingBufferRead(&Channel->Inbound, Buffer, userLen, (desc.DataOffset8 << 3));
+ ret = RingBufferRead(&Channel->Inbound, Buffer, userLen,
+ (desc.DataOffset8 << 3));
spin_unlock_irqrestore(&Channel->inbound_lock, flags);
return 0;
}
-/*++
-
-Name:
- VmbusChannelRecvPacketRaw()
-
-Description:
- Retrieve the raw packet on the specified channel
-
---*/
-int VmbusChannelRecvPacketRaw(struct vmbus_channel *Channel,
- void * Buffer,
- u32 BufferLen,
- u32* BufferActualLen,
- u64* RequestId
- )
+/**
+ * VmbusChannelRecvPacketRaw - Retrieve the raw packet on the specified channel
+ */
+int VmbusChannelRecvPacketRaw(struct vmbus_channel *Channel, void *Buffer,
+ u32 BufferLen, u32 *BufferActualLen,
+ u64 *RequestId)
{
struct vmpacket_descriptor desc;
u32 packetLen;
spin_lock_irqsave(&Channel->inbound_lock, flags);
- ret = RingBufferPeek(&Channel->Inbound, &desc, sizeof(struct vmpacket_descriptor));
- if (ret != 0)
- {
+ ret = RingBufferPeek(&Channel->Inbound, &desc,
+ sizeof(struct vmpacket_descriptor));
+ if (ret != 0) {
spin_unlock_irqrestore(&Channel->inbound_lock, flags);
/* DPRINT_DBG(VMBUS, "nothing to read!!"); */
packetLen = desc.Length8 << 3;
userLen = packetLen - (desc.DataOffset8 << 3);
- DPRINT_DBG(VMBUS, "packet received on channel %p relid %d <type %d flag %d tid %llx pktlen %d datalen %d> ",
- Channel,
- Channel->OfferMsg.ChildRelId,
- desc.Type,
- desc.Flags,
- desc.TransactionId, packetLen, userLen);
+ DPRINT_DBG(VMBUS, "packet received on channel %p relid %d <type %d "
+ "flag %d tid %llx pktlen %d datalen %d> ",
+ Channel, Channel->OfferMsg.ChildRelId, desc.Type,
+ desc.Flags, desc.TransactionId, packetLen, userLen);
*BufferActualLen = packetLen;
- if (packetLen > BufferLen)
- {
+ if (packetLen > BufferLen) {
spin_unlock_irqrestore(&Channel->inbound_lock, flags);
- DPRINT_ERR(VMBUS, "buffer too small - needed %d bytes but got space for only %d bytes", packetLen, BufferLen);
+ DPRINT_ERR(VMBUS, "buffer too small - needed %d bytes but "
+ "got space for only %d bytes", packetLen, BufferLen);
DPRINT_EXIT(VMBUS);
return -2;
}
return 0;
}
-
-/*++
-
-Name:
- VmbusChannelOnChannelEvent()
-
-Description:
- Channel event callback
-
---*/
+/**
+ * VmbusChannelOnChannelEvent - Channel event callback
+ */
void VmbusChannelOnChannelEvent(struct vmbus_channel *Channel)
{
DumpVmbusChannel(Channel);
#endif
}
-/*++
-
-Name:
- VmbusChannelOnTimer()
-
-Description:
- Timer event callback
-
---*/
+/**
+ * VmbusChannelOnTimer - Timer event callback
+ */
void VmbusChannelOnTimer(unsigned long data)
{
struct vmbus_channel *channel = (struct vmbus_channel *)data;
- if (channel->OnChannelCallback)
- {
+ if (channel->OnChannelCallback) {
channel->OnChannelCallback(channel->ChannelCallbackContext);
#ifdef ENABLE_POLLING
channel->poll_timer.expires(jiffies + usecs_to_jiffies(100);
}
}
-
-/*++
-
-Name:
- DumpVmbusChannel()
-
-Description:
- Dump vmbus channel info to the console
-
---*/
+/**
+ * DumpVmbusChannel - Dump vmbus channel info to the console
+ */
static void DumpVmbusChannel(struct vmbus_channel *Channel)
{
DPRINT_DBG(VMBUS, "Channel (%d)", Channel->OfferMsg.ChildRelId);
DumpRingInfo(&Channel->Outbound, "Outbound ");
DumpRingInfo(&Channel->Inbound, "Inbound ");
}
-
-
-/* eof */
projects / openwrt / staging / blogic.git / commitdiff