提交 39d70a4a 编写于 作者: H Haiyang Zhang 提交者: Greg Kroah-Hartman

staging: hv: Remove camel case variables in channel.c

Rename camel case variables in channel.c and changed them to
lowercase.
Signed-off-by: NHaiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: NHank Janssen <hjanssen@microsoft.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
上级 03094f5e
......@@ -28,10 +28,10 @@
/* Internal routines */
static int VmbusChannelCreateGpadlHeader(
void *Kbuffer, /* must be phys and virt contiguous */
u32 Size, /* page-size multiple */
struct vmbus_channel_msginfo **msgInfo,
u32 *MessageCount);
void *kbuffer, /* must be phys and virt contiguous */
u32 size, /* page-size multiple */
struct vmbus_channel_msginfo **msginfo,
u32 *messagecount);
static void DumpVmbusChannel(struct vmbus_channel *channel);
static void VmbusChannelSetEvent(struct vmbus_channel *channel);
......@@ -70,25 +70,25 @@ static void DumpMonitorPage(struct hv_monitor_page *MonitorPage)
* VmbusChannelSetEvent - Trigger an event notification on the specified
* channel.
*/
static void VmbusChannelSetEvent(struct vmbus_channel *Channel)
static void VmbusChannelSetEvent(struct vmbus_channel *channel)
{
struct hv_monitor_page *monitorPage;
struct hv_monitor_page *monitorpage;
if (Channel->OfferMsg.MonitorAllocated) {
if (channel->OfferMsg.MonitorAllocated) {
/* Each u32 represents 32 channels */
set_bit(Channel->OfferMsg.ChildRelId & 31,
set_bit(channel->OfferMsg.ChildRelId & 31,
(unsigned long *) gVmbusConnection.SendInterruptPage +
(Channel->OfferMsg.ChildRelId >> 5));
(channel->OfferMsg.ChildRelId >> 5));
monitorPage = gVmbusConnection.MonitorPages;
monitorPage++; /* Get the child to parent monitor page */
monitorpage = gVmbusConnection.MonitorPages;
monitorpage++; /* Get the child to parent monitor page */
set_bit(Channel->MonitorBit,
(unsigned long *)&monitorPage->TriggerGroup
[Channel->MonitorGroup].Pending);
set_bit(channel->MonitorBit,
(unsigned long *)&monitorpage->TriggerGroup
[channel->MonitorGroup].Pending);
} else {
VmbusSetEvent(Channel->OfferMsg.ChildRelId);
VmbusSetEvent(channel->OfferMsg.ChildRelId);
}
}
......@@ -117,54 +117,54 @@ static void VmbusChannelClearEvent(struct vmbus_channel *channel)
/*
* VmbusChannelGetDebugInfo -Retrieve various channel debug info
*/
void VmbusChannelGetDebugInfo(struct vmbus_channel *Channel,
struct vmbus_channel_debug_info *DebugInfo)
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;
struct hv_monitor_page *monitorpage;
u8 monitor_group = (u8)channel->OfferMsg.MonitorId / 32;
u8 monitor_offset = (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,
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));
monitorPage = (struct hv_monitor_page *)gVmbusConnection.MonitorPages;
monitorpage = (struct hv_monitor_page *)gVmbusConnection.MonitorPages;
DebugInfo->MonitorId = Channel->OfferMsg.MonitorId;
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[monitor_group].Pending;
debuginfo->ServerMonitorLatency =
monitorpage->Latency[monitor_group][monitor_offset];
debuginfo->ServerMonitorConnectionId =
monitorpage->Parameter[monitor_group]
[monitor_offset].ConnectionId.u.Id;
monitorPage++;
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[monitor_group].Pending;
debuginfo->ClientMonitorLatency =
monitorpage->Latency[monitor_group][monitor_offset];
debuginfo->ClientMonitorConnectionId =
monitorpage->Parameter[monitor_group]
[monitor_offset].ConnectionId.u.Id;
RingBufferGetDebugInfo(&Channel->Inbound, &DebugInfo->Inbound);
RingBufferGetDebugInfo(&Channel->Outbound, &DebugInfo->Outbound);
RingBufferGetDebugInfo(&channel->Inbound, &debuginfo->Inbound);
RingBufferGetDebugInfo(&channel->Outbound, &debuginfo->Outbound);
}
/*
* VmbusChannelOpen - Open the specified channel.
*/
int VmbusChannelOpen(struct vmbus_channel *NewChannel, u32 SendRingBufferSize,
u32 RecvRingBufferSize, void *UserData, u32 UserDataLen,
void (*OnChannelCallback)(void *context), void *Context)
int VmbusChannelOpen(struct vmbus_channel *newchannel, u32 send_ringbuffer_size,
u32 recv_ringbuffer_size, void *userdata, u32 userdatalen,
void (*onchannelcallback)(void *context), void *context)
{
struct vmbus_channel_open_channel *openMsg;
struct vmbus_channel_msginfo *openInfo = NULL;
......@@ -176,30 +176,30 @@ int VmbusChannelOpen(struct vmbus_channel *NewChannel, u32 SendRingBufferSize,
/* ASSERT(!(SendRingBufferSize & (PAGE_SIZE - 1))); */
/* ASSERT(!(RecvRingBufferSize & (PAGE_SIZE - 1))); */
NewChannel->OnChannelCallback = OnChannelCallback;
NewChannel->ChannelCallbackContext = Context;
newchannel->OnChannelCallback = onchannelcallback;
newchannel->ChannelCallbackContext = context;
/* Allocate the ring buffer */
out = osd_PageAlloc((SendRingBufferSize + RecvRingBufferSize)
out = osd_PageAlloc((send_ringbuffer_size + recv_ringbuffer_size)
>> PAGE_SHIFT);
if (!out)
return -ENOMEM;
/* ASSERT(((unsigned long)out & (PAGE_SIZE-1)) == 0); */
in = (void *)((unsigned long)out + SendRingBufferSize);
in = (void *)((unsigned long)out + send_ringbuffer_size);
NewChannel->RingBufferPages = out;
NewChannel->RingBufferPageCount = (SendRingBufferSize +
RecvRingBufferSize) >> PAGE_SHIFT;
newchannel->RingBufferPages = out;
newchannel->RingBufferPageCount = (send_ringbuffer_size +
recv_ringbuffer_size) >> PAGE_SHIFT;
ret = RingBufferInit(&NewChannel->Outbound, out, SendRingBufferSize);
ret = RingBufferInit(&newchannel->Outbound, out, send_ringbuffer_size);
if (ret != 0) {
err = ret;
goto errorout;
}
ret = RingBufferInit(&NewChannel->Inbound, in, RecvRingBufferSize);
ret = RingBufferInit(&newchannel->Inbound, in, recv_ringbuffer_size);
if (ret != 0) {
err = ret;
goto errorout;
......@@ -208,15 +208,15 @@ int VmbusChannelOpen(struct vmbus_channel *NewChannel, u32 SendRingBufferSize,
/* Establish the gpadl for the ring buffer */
DPRINT_DBG(VMBUS, "Establishing ring buffer's gpadl for channel %p...",
NewChannel);
newchannel);
NewChannel->RingBufferGpadlHandle = 0;
newchannel->RingBufferGpadlHandle = 0;
ret = VmbusChannelEstablishGpadl(NewChannel,
NewChannel->Outbound.RingBuffer,
SendRingBufferSize +
RecvRingBufferSize,
&NewChannel->RingBufferGpadlHandle);
ret = VmbusChannelEstablishGpadl(newchannel,
newchannel->Outbound.RingBuffer,
send_ringbuffer_size +
recv_ringbuffer_size,
&newchannel->RingBufferGpadlHandle);
if (ret != 0) {
err = ret;
......@@ -225,13 +225,13 @@ int VmbusChannelOpen(struct vmbus_channel *NewChannel, u32 SendRingBufferSize,
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, newchannel->OfferMsg.ChildRelId,
newchannel->RingBufferGpadlHandle,
newchannel->Outbound.RingBuffer,
newchannel->Outbound.RingSize,
newchannel->Inbound.RingBuffer,
newchannel->Inbound.RingSize,
send_ringbuffer_size);
/* Create and init the channel open message */
openInfo = kmalloc(sizeof(*openInfo) +
......@@ -250,20 +250,20 @@ int VmbusChannelOpen(struct vmbus_channel *NewChannel, u32 SendRingBufferSize,
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;
openMsg->DownstreamRingBufferPageOffset = SendRingBufferSize >>
openMsg->OpenId = newchannel->OfferMsg.ChildRelId; /* FIXME */
openMsg->ChildRelId = newchannel->OfferMsg.ChildRelId;
openMsg->RingBufferGpadlHandle = newchannel->RingBufferGpadlHandle;
openMsg->DownstreamRingBufferPageOffset = send_ringbuffer_size >>
PAGE_SHIFT;
openMsg->ServerContextAreaGpadlHandle = 0; /* TODO */
if (UserDataLen > MAX_USER_DEFINED_BYTES) {
if (userdatalen > MAX_USER_DEFINED_BYTES) {
err = -EINVAL;
goto errorout;
}
if (UserDataLen)
memcpy(openMsg->UserData, UserData, UserDataLen);
if (userdatalen)
memcpy(openMsg->UserData, userdata, userdatalen);
spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags);
list_add_tail(&openInfo->MsgListEntry,
......@@ -283,10 +283,10 @@ int VmbusChannelOpen(struct vmbus_channel *NewChannel, u32 SendRingBufferSize,
osd_WaitEventWait(openInfo->WaitEvent);
if (openInfo->Response.OpenResult.Status == 0)
DPRINT_INFO(VMBUS, "channel <%p> open success!!", NewChannel);
DPRINT_INFO(VMBUS, "channel <%p> open success!!", newchannel);
else
DPRINT_INFO(VMBUS, "channel <%p> open failed - %d!!",
NewChannel, openInfo->Response.OpenResult.Status);
newchannel, openInfo->Response.OpenResult.Status);
Cleanup:
spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags);
......@@ -298,9 +298,9 @@ int VmbusChannelOpen(struct vmbus_channel *NewChannel, u32 SendRingBufferSize,
return 0;
errorout:
RingBufferCleanup(&NewChannel->Outbound);
RingBufferCleanup(&NewChannel->Inbound);
osd_PageFree(out, (SendRingBufferSize + RecvRingBufferSize)
RingBufferCleanup(&newchannel->Outbound);
RingBufferCleanup(&newchannel->Inbound);
osd_PageFree(out, (send_ringbuffer_size + recv_ringbuffer_size)
>> PAGE_SHIFT);
kfree(openInfo);
return err;
......@@ -310,289 +310,292 @@ int VmbusChannelOpen(struct vmbus_channel *NewChannel, u32 SendRingBufferSize,
* DumpGpadlBody - Dump the gpadl body message to the console for
* debugging purposes.
*/
static void DumpGpadlBody(struct vmbus_channel_gpadl_body *Gpadl, u32 Len)
static void DumpGpadlBody(struct vmbus_channel_gpadl_body *gpadl, u32 len)
{
int i;
int pfnCount;
int pfncount;
pfnCount = (Len - sizeof(struct vmbus_channel_gpadl_body)) /
pfncount = (len - sizeof(struct vmbus_channel_gpadl_body)) /
sizeof(u64);
DPRINT_DBG(VMBUS, "gpadl body - len %d pfn count %d", Len, pfnCount);
DPRINT_DBG(VMBUS, "gpadl body - len %d pfn count %d", len, pfncount);
for (i = 0; i < pfnCount; i++)
for (i = 0; i < pfncount; i++)
DPRINT_DBG(VMBUS, "gpadl body - %d) pfn %llu",
i, Gpadl->Pfn[i]);
i, gpadl->Pfn[i]);
}
/*
* DumpGpadlHeader - Dump the gpadl header message to the console for
* debugging purposes.
*/
static void DumpGpadlHeader(struct vmbus_channel_gpadl_header *Gpadl)
static void DumpGpadlHeader(struct vmbus_channel_gpadl_header *gpadl)
{
int i, j;
int pageCount;
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++) {
pageCount = Gpadl->Range[i].ByteCount >> PAGE_SHIFT;
pageCount = (pageCount > 26) ? 26 : pageCount;
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;
DPRINT_DBG(VMBUS, "gpadl range %d - len %d offset %d "
"page count %d", i, Gpadl->Range[i].ByteCount,
Gpadl->Range[i].ByteOffset, pageCount);
"page count %d", i, gpadl->Range[i].ByteCount,
gpadl->Range[i].ByteOffset, pagecount);
for (j = 0; j < pageCount; j++)
for (j = 0; j < pagecount; j++)
DPRINT_DBG(VMBUS, "%d) pfn %llu", j,
Gpadl->Range[i].PfnArray[j]);
gpadl->Range[i].PfnArray[j]);
}
}
/*
* VmbusChannelCreateGpadlHeader - Creates a gpadl for the specified buffer
*/
static int VmbusChannelCreateGpadlHeader(void *Kbuffer, u32 Size,
struct vmbus_channel_msginfo **MsgInfo,
u32 *MessageCount)
static int VmbusChannelCreateGpadlHeader(void *kbuffer, u32 size,
struct vmbus_channel_msginfo **msginfo,
u32 *messagecount)
{
int i;
int pageCount;
int pagecount;
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 = NULL;
u32 msgSize;
struct vmbus_channel_gpadl_header *gpadl_header;
struct vmbus_channel_gpadl_body *gpadl_body;
struct vmbus_channel_msginfo *msgheader;
struct vmbus_channel_msginfo *msgbody = NULL;
u32 msgsize;
int pfnSum, pfnCount, pfnLeft, pfnCurr, pfnSize;
int pfnsum, pfncount, pfnleft, pfncurr, pfnsize;
/* ASSERT((kbuffer & (PAGE_SIZE-1)) == 0); */
/* ASSERT((Size & (PAGE_SIZE-1)) == 0); */
pageCount = Size >> PAGE_SHIFT;
pfn = virt_to_phys(Kbuffer) >> PAGE_SHIFT;
pagecount = size >> PAGE_SHIFT;
pfn = virt_to_phys(kbuffer) >> PAGE_SHIFT;
/* do we need a gpadl body msg */
pfnSize = MAX_SIZE_CHANNEL_MESSAGE -
pfnsize = MAX_SIZE_CHANNEL_MESSAGE -
sizeof(struct vmbus_channel_gpadl_header) -
sizeof(struct gpa_range);
pfnCount = pfnSize / sizeof(u64);
pfncount = pfnsize / sizeof(u64);
if (pageCount > pfnCount) {
if (pagecount > pfncount) {
/* we need a gpadl body */
/* fill in the header */
msgSize = sizeof(struct vmbus_channel_msginfo) +
msgsize = sizeof(struct vmbus_channel_msginfo) +
sizeof(struct vmbus_channel_gpadl_header) +
sizeof(struct gpa_range) + pfnCount * sizeof(u64);
msgHeader = kzalloc(msgSize, GFP_KERNEL);
if (!msgHeader)
sizeof(struct gpa_range) + pfncount * sizeof(u64);
msgheader = kzalloc(msgsize, GFP_KERNEL);
if (!msgheader)
goto nomem;
INIT_LIST_HEAD(&msgHeader->SubMsgList);
msgHeader->MessageSize = msgSize;
INIT_LIST_HEAD(&msgheader->SubMsgList);
msgheader->MessageSize = msgsize;
gpaHeader = (struct vmbus_channel_gpadl_header *)msgHeader->Msg;
gpaHeader->RangeCount = 1;
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++)
gpaHeader->Range[0].PfnArray[i] = pfn+i;
*MsgInfo = msgHeader;
*MessageCount = 1;
gpadl_header = (struct vmbus_channel_gpadl_header *)
msgheader->Msg;
gpadl_header->RangeCount = 1;
gpadl_header->RangeBufLen = sizeof(struct gpa_range) +
pagecount * sizeof(u64);
gpadl_header->Range[0].ByteOffset = 0;
gpadl_header->Range[0].ByteCount = size;
for (i = 0; i < pfncount; i++)
gpadl_header->Range[0].PfnArray[i] = pfn+i;
*msginfo = msgheader;
*messagecount = 1;
pfnSum = pfnCount;
pfnLeft = pageCount - pfnCount;
pfnsum = pfncount;
pfnleft = pagecount - pfncount;
/* how many pfns can we fit */
pfnSize = MAX_SIZE_CHANNEL_MESSAGE -
pfnsize = MAX_SIZE_CHANNEL_MESSAGE -
sizeof(struct vmbus_channel_gpadl_body);
pfnCount = pfnSize / sizeof(u64);
pfncount = pfnsize / sizeof(u64);
/* fill in the body */
while (pfnLeft) {
if (pfnLeft > pfnCount)
pfnCurr = pfnCount;
while (pfnleft) {
if (pfnleft > pfncount)
pfncurr = pfncount;
else
pfnCurr = pfnLeft;
pfncurr = pfnleft;
msgSize = sizeof(struct vmbus_channel_msginfo) +
msgsize = sizeof(struct vmbus_channel_msginfo) +
sizeof(struct vmbus_channel_gpadl_body) +
pfnCurr * sizeof(u64);
msgBody = kzalloc(msgSize, GFP_KERNEL);
pfncurr * sizeof(u64);
msgbody = kzalloc(msgsize, GFP_KERNEL);
/* FIXME: we probably need to more if this fails */
if (!msgBody)
if (!msgbody)
goto nomem;
msgBody->MessageSize = msgSize;
(*MessageCount)++;
gpadlBody =
(struct vmbus_channel_gpadl_body *)msgBody->Msg;
msgbody->MessageSize = msgsize;
(*messagecount)++;
gpadl_body =
(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++)
gpadlBody->Pfn[i] = pfn + pfnSum + i;
/* gpadl_body->Gpadl = kbuffer; */
for (i = 0; i < pfncurr; i++)
gpadl_body->Pfn[i] = pfn + pfnsum + i;
/* add to msg header */
list_add_tail(&msgBody->MsgListEntry,
&msgHeader->SubMsgList);
pfnSum += pfnCurr;
pfnLeft -= pfnCurr;
list_add_tail(&msgbody->MsgListEntry,
&msgheader->SubMsgList);
pfnsum += pfncurr;
pfnleft -= pfncurr;
}
} else {
/* everything fits in a header */
msgSize = sizeof(struct vmbus_channel_msginfo) +
msgsize = sizeof(struct vmbus_channel_msginfo) +
sizeof(struct vmbus_channel_gpadl_header) +
sizeof(struct gpa_range) + pageCount * sizeof(u64);
msgHeader = kzalloc(msgSize, GFP_KERNEL);
if (msgHeader == NULL)
sizeof(struct gpa_range) + pagecount * sizeof(u64);
msgheader = kzalloc(msgsize, GFP_KERNEL);
if (msgheader == NULL)
goto nomem;
msgHeader->MessageSize = msgSize;
gpaHeader = (struct vmbus_channel_gpadl_header *)msgHeader->Msg;
gpaHeader->RangeCount = 1;
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++)
gpaHeader->Range[0].PfnArray[i] = pfn+i;
*MsgInfo = msgHeader;
*MessageCount = 1;
msgheader->MessageSize = msgsize;
gpadl_header = (struct vmbus_channel_gpadl_header *)
msgheader->Msg;
gpadl_header->RangeCount = 1;
gpadl_header->RangeBufLen = sizeof(struct gpa_range) +
pagecount * sizeof(u64);
gpadl_header->Range[0].ByteOffset = 0;
gpadl_header->Range[0].ByteCount = size;
for (i = 0; i < pagecount; i++)
gpadl_header->Range[0].PfnArray[i] = pfn+i;
*msginfo = msgheader;
*messagecount = 1;
}
return 0;
nomem:
kfree(msgHeader);
kfree(msgBody);
kfree(msgheader);
kfree(msgbody);
return -ENOMEM;
}
/*
* VmbusChannelEstablishGpadl - Estabish a GPADL for the specified buffer
*
* @Channel: a channel
* @Kbuffer: from kmalloc
* @Size: page-size multiple
* @GpadlHandle: some funky thing
* @channel: a channel
* @kbuffer: from kmalloc
* @size: page-size multiple
* @gpadl_handle: some funky thing
*/
int VmbusChannelEstablishGpadl(struct vmbus_channel *Channel, void *Kbuffer,
u32 Size, u32 *GpadlHandle)
int VmbusChannelEstablishGpadl(struct vmbus_channel *channel, void *kbuffer,
u32 size, u32 *gpadl_handle)
{
struct vmbus_channel_gpadl_header *gpadlMsg;
struct vmbus_channel_gpadl_body *gpadlBody;
struct vmbus_channel_gpadl_header *gpadlmsg;
struct vmbus_channel_gpadl_body *gpadl_body;
/* struct vmbus_channel_gpadl_created *gpadlCreated; */
struct vmbus_channel_msginfo *msgInfo = NULL;
struct vmbus_channel_msginfo *subMsgInfo;
u32 msgCount;
struct vmbus_channel_msginfo *msginfo = NULL;
struct vmbus_channel_msginfo *submsginfo;
u32 msgcount;
struct list_head *curr;
u32 nextGpadlHandle;
u32 next_gpadl_handle;
unsigned long flags;
int ret = 0;
nextGpadlHandle = atomic_read(&gVmbusConnection.NextGpadlHandle);
next_gpadl_handle = atomic_read(&gVmbusConnection.NextGpadlHandle);
atomic_inc(&gVmbusConnection.NextGpadlHandle);
ret = VmbusChannelCreateGpadlHeader(Kbuffer, Size, &msgInfo, &msgCount);
ret = VmbusChannelCreateGpadlHeader(kbuffer, size, &msginfo, &msgcount);
if (ret)
return ret;
msgInfo->WaitEvent = osd_WaitEventCreate();
if (!msgInfo->WaitEvent) {
msginfo->WaitEvent = osd_WaitEventCreate();
if (!msginfo->WaitEvent) {
ret = -ENOMEM;
goto Cleanup;
}
gpadlMsg = (struct vmbus_channel_gpadl_header *)msgInfo->Msg;
gpadlMsg->Header.MessageType = ChannelMessageGpadlHeader;
gpadlMsg->ChildRelId = Channel->OfferMsg.ChildRelId;
gpadlMsg->Gpadl = nextGpadlHandle;
gpadlmsg = (struct vmbus_channel_gpadl_header *)msginfo->Msg;
gpadlmsg->Header.MessageType = ChannelMessageGpadlHeader;
gpadlmsg->ChildRelId = channel->OfferMsg.ChildRelId;
gpadlmsg->Gpadl = next_gpadl_handle;
DumpGpadlHeader(gpadlMsg);
DumpGpadlHeader(gpadlmsg);
spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags);
list_add_tail(&msgInfo->MsgListEntry,
list_add_tail(&msginfo->MsgListEntry,
&gVmbusConnection.ChannelMsgList);
spin_unlock_irqrestore(&gVmbusConnection.channelmsg_lock, flags);
DPRINT_DBG(VMBUS, "buffer %p, size %d msg cnt %d",
Kbuffer, Size, msgCount);
kbuffer, size, msgcount);
DPRINT_DBG(VMBUS, "Sending GPADL Header - len %zd",
msgInfo->MessageSize - sizeof(*msgInfo));
msginfo->MessageSize - sizeof(*msginfo));
ret = VmbusPostMessage(gpadlMsg, msgInfo->MessageSize -
sizeof(*msgInfo));
ret = VmbusPostMessage(gpadlmsg, msginfo->MessageSize -
sizeof(*msginfo));
if (ret != 0) {
DPRINT_ERR(VMBUS, "Unable to open channel - %d", ret);
goto Cleanup;
}
if (msgCount > 1) {
list_for_each(curr, &msgInfo->SubMsgList) {
if (msgcount > 1) {
list_for_each(curr, &msginfo->SubMsgList) {
/* FIXME: should this use list_entry() instead ? */
subMsgInfo = (struct vmbus_channel_msginfo *)curr;
gpadlBody =
(struct vmbus_channel_gpadl_body *)subMsgInfo->Msg;
submsginfo = (struct vmbus_channel_msginfo *)curr;
gpadl_body =
(struct vmbus_channel_gpadl_body *)submsginfo->Msg;
gpadlBody->Header.MessageType = ChannelMessageGpadlBody;
gpadlBody->Gpadl = nextGpadlHandle;
gpadl_body->Header.MessageType =
ChannelMessageGpadlBody;
gpadl_body->Gpadl = next_gpadl_handle;
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));
submsginfo->MessageSize -
sizeof(*submsginfo));
DumpGpadlBody(gpadl_body, submsginfo->MessageSize -
sizeof(*submsginfo));
ret = VmbusPostMessage(gpadl_body,
submsginfo->MessageSize -
sizeof(*submsginfo));
if (ret != 0)
goto Cleanup;
}
}
osd_WaitEventWait(msgInfo->WaitEvent);
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);
channel->OfferMsg.ChildRelId,
msginfo->Response.GpadlCreated.CreationStatus,
gpadlmsg->Gpadl);
*GpadlHandle = gpadlMsg->Gpadl;
*gpadl_handle = gpadlmsg->Gpadl;
Cleanup:
spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags);
list_del(&msgInfo->MsgListEntry);
list_del(&msginfo->MsgListEntry);
spin_unlock_irqrestore(&gVmbusConnection.channelmsg_lock, flags);
kfree(msgInfo->WaitEvent);
kfree(msgInfo);
kfree(msginfo->WaitEvent);
kfree(msginfo);
return ret;
}
/*
* VmbusChannelTeardownGpadl -Teardown the specified GPADL handle
*/
int VmbusChannelTeardownGpadl(struct vmbus_channel *Channel, u32 GpadlHandle)
int VmbusChannelTeardownGpadl(struct vmbus_channel *channel, u32 gpadl_handle)
{
struct vmbus_channel_gpadl_teardown *msg;
struct vmbus_channel_msginfo *info;
unsigned long flags;
int ret;
/* ASSERT(GpadlHandle != 0); */
/* ASSERT(gpadl_handle != 0); */
info = kmalloc(sizeof(*info) +
sizeof(struct vmbus_channel_gpadl_teardown), GFP_KERNEL);
......@@ -608,8 +611,8 @@ int VmbusChannelTeardownGpadl(struct vmbus_channel *Channel, u32 GpadlHandle)
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 = gpadl_handle;
spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags);
list_add_tail(&info->MsgListEntry,
......@@ -638,7 +641,7 @@ int VmbusChannelTeardownGpadl(struct vmbus_channel *Channel, u32 GpadlHandle)
/*
* VmbusChannelClose - Close the specified channel
*/
void VmbusChannelClose(struct vmbus_channel *Channel)
void VmbusChannelClose(struct vmbus_channel *channel)
{
struct vmbus_channel_close_channel *msg;
struct vmbus_channel_msginfo *info;
......@@ -646,8 +649,8 @@ void VmbusChannelClose(struct vmbus_channel *Channel)
int ret;
/* Stop callback and cancel the timer asap */
Channel->OnChannelCallback = NULL;
del_timer_sync(&Channel->poll_timer);
channel->OnChannelCallback = NULL;
del_timer_sync(&channel->poll_timer);
/* Send a closing message */
info = kmalloc(sizeof(*info) +
......@@ -661,7 +664,7 @@ void VmbusChannelClose(struct vmbus_channel *Channel)
msg = (struct vmbus_channel_close_channel *)info->Msg;
msg->Header.MessageType = ChannelMessageCloseChannel;
msg->ChildRelId = Channel->OfferMsg.ChildRelId;
msg->ChildRelId = channel->OfferMsg.ChildRelId;
ret = VmbusPostMessage(msg, sizeof(struct vmbus_channel_close_channel));
if (ret != 0) {
......@@ -670,17 +673,17 @@ void VmbusChannelClose(struct vmbus_channel *Channel)
}
/* Tear down the gpadl for the channel's ring buffer */
if (Channel->RingBufferGpadlHandle)
VmbusChannelTeardownGpadl(Channel,
Channel->RingBufferGpadlHandle);
if (channel->RingBufferGpadlHandle)
VmbusChannelTeardownGpadl(channel,
channel->RingBufferGpadlHandle);
/* TODO: Send a msg to release the childRelId */
/* Cleanup the ring buffers for this channel */
RingBufferCleanup(&Channel->Outbound);
RingBufferCleanup(&Channel->Inbound);
RingBufferCleanup(&channel->Outbound);
RingBufferCleanup(&channel->Inbound);
osd_PageFree(Channel->RingBufferPages, Channel->RingBufferPageCount);
osd_PageFree(channel->RingBufferPages, channel->RingBufferPageCount);
kfree(info);
......@@ -690,65 +693,66 @@ void VmbusChannelClose(struct vmbus_channel *Channel)
* caller will free the channel
*/
if (Channel->State == CHANNEL_OPEN_STATE) {
if (channel->State == CHANNEL_OPEN_STATE) {
spin_lock_irqsave(&gVmbusConnection.channel_lock, flags);
list_del(&Channel->ListEntry);
list_del(&channel->ListEntry);
spin_unlock_irqrestore(&gVmbusConnection.channel_lock, flags);
FreeVmbusChannel(Channel);
FreeVmbusChannel(channel);
}
}
/**
* VmbusChannelSendPacket() - Send the specified buffer on the given channel
* @Channel: Pointer to vmbus_channel structure.
* @Buffer: Pointer to the buffer you want to receive the data into.
* @BufferLen: Maximum size of what the the buffer will hold
* @RequestId: Identifier of the request
* @vmbus_packet_type: Type of packet that is being send e.g. negotiate, time
* @channel: Pointer to vmbus_channel structure.
* @buffer: Pointer to the buffer you want to receive the data into.
* @bufferlen: Maximum size of what the the buffer will hold
* @requestid: Identifier of the request
* @type: Type of packet that is being send e.g. negotiate, time
* packet etc.
*
* Sends data in @Buffer directly to hyper-v via the vmbus
* Sends data in @buffer directly to hyper-v via the vmbus
* This will send the data unparsed to hyper-v.
*
* Mainly used by Hyper-V drivers.
*/
int VmbusChannelSendPacket(struct vmbus_channel *Channel, const void *Buffer,
u32 BufferLen, u64 RequestId,
enum vmbus_packet_type Type, u32 Flags)
int VmbusChannelSendPacket(struct vmbus_channel *channel, const void *buffer,
u32 bufferlen, u64 requestid,
enum vmbus_packet_type type, u32 flags)
{
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;
u32 packetlen = sizeof(struct vmpacket_descriptor) + bufferlen;
u32 packetlen_aligned = ALIGN_UP(packetlen, sizeof(u64));
struct scatterlist bufferlist[3];
u64 aligned_data = 0;
int ret;
DPRINT_DBG(VMBUS, "channel %p buffer %p len %d",
Channel, Buffer, BufferLen);
channel, buffer, bufferlen);
DumpVmbusChannel(Channel);
DumpVmbusChannel(channel);
/* ASSERT((packetLenAligned - packetLen) < sizeof(u64)); */
/* Setup the descriptor */
desc.Type = Type; /* VmbusPacketTypeDataInBand; */
desc.Flags = Flags; /* VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED; */
desc.Type = type; /* VmbusPacketTypeDataInBand; */
desc.Flags = flags; /* VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED; */
/* in 8-bytes granularity */
desc.DataOffset8 = sizeof(struct vmpacket_descriptor) >> 3;
desc.Length8 = (u16)(packetLenAligned >> 3);
desc.TransactionId = RequestId;
desc.Length8 = (u16)(packetlen_aligned >> 3);
desc.TransactionId = requestid;
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);
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], &aligned_data,
packetlen_aligned - 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);
if (ret == 0 && !GetRingBufferInterruptMask(&channel->Outbound))
VmbusChannelSetEvent(channel);
return ret;
}
......@@ -758,61 +762,62 @@ EXPORT_SYMBOL(VmbusChannelSendPacket);
* 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)
int VmbusChannelSendPacketPageBuffer(struct vmbus_channel *channel,
struct hv_page_buffer pagebuffers[],
u32 pagecount, void *buffer, u32 bufferlen,
u64 requestid)
{
int ret;
int i;
struct vmbus_channel_packet_page_buffer desc;
u32 descSize;
u32 packetLen;
u32 packetLenAligned;
struct scatterlist bufferList[3];
u64 alignedData = 0;
u32 descsize;
u32 packetlen;
u32 packetlen_aligned;
struct scatterlist bufferlist[3];
u64 aligned_data = 0;
if (PageCount > MAX_PAGE_BUFFER_COUNT)
if (pagecount > MAX_PAGE_BUFFER_COUNT)
return -EINVAL;
DumpVmbusChannel(Channel);
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) *
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));
packetlen = descsize + bufferlen;
packetlen_aligned = ALIGN_UP(packetlen, sizeof(u64));
/* ASSERT((packetLenAligned - packetLen) < sizeof(u64)); */
/* Setup the descriptor */
desc.type = VmbusPacketTypeDataUsingGpaDirect;
desc.flags = VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED;
desc.dataoffset8 = descSize >> 3; /* in 8-bytes grandularity */
desc.length8 = (u16)(packetLenAligned >> 3);
desc.transactionid = RequestId;
desc.rangecount = PageCount;
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;
desc.dataoffset8 = descsize >> 3; /* in 8-bytes grandularity */
desc.length8 = (u16)(packetlen_aligned >> 3);
desc.transactionid = requestid;
desc.rangecount = pagecount;
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_set_buf(&bufferList[0], &desc, descSize);
sg_set_buf(&bufferList[1], Buffer, BufferLen);
sg_set_buf(&bufferList[2], &alignedData, packetLenAligned - packetLen);
sg_init_table(bufferlist, 3);
sg_set_buf(&bufferlist[0], &desc, descsize);
sg_set_buf(&bufferlist[1], buffer, bufferlen);
sg_set_buf(&bufferlist[2], &aligned_data,
packetlen_aligned - 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);
if (ret == 0 && !GetRingBufferInterruptMask(&channel->Outbound))
VmbusChannelSetEvent(channel);
return ret;
}
......@@ -821,64 +826,66 @@ int VmbusChannelSendPacketPageBuffer(struct vmbus_channel *Channel,
* 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)
int VmbusChannelSendPacketMultiPageBuffer(struct vmbus_channel *channel,
struct hv_multipage_buffer *multi_pagebuffer,
void *buffer, u32 bufferlen, u64 requestid)
{
int ret;
struct vmbus_channel_packet_multipage_buffer desc;
u32 descSize;
u32 packetLen;
u32 packetLenAligned;
struct scatterlist bufferList[3];
u64 alignedData = 0;
u32 PfnCount = NUM_PAGES_SPANNED(MultiPageBuffer->Offset,
MultiPageBuffer->Length);
u32 descsize;
u32 packetlen;
u32 packetlen_aligned;
struct scatterlist bufferlist[3];
u64 aligned_data = 0;
u32 pfncount = NUM_PAGES_SPANNED(multi_pagebuffer->Offset,
multi_pagebuffer->Length);
DumpVmbusChannel(Channel);
DumpVmbusChannel(channel);
DPRINT_DBG(VMBUS, "data buffer - offset %u len %u pfn count %u",
MultiPageBuffer->Offset, MultiPageBuffer->Length, PfnCount);
multi_pagebuffer->Offset,
multi_pagebuffer->Length, pfncount);
if ((PfnCount < 0) || (PfnCount > MAX_MULTIPAGE_BUFFER_COUNT))
if ((pfncount < 0) || (pfncount > MAX_MULTIPAGE_BUFFER_COUNT))
return -EINVAL;
/*
* Adjust the size down since vmbus_channel_packet_multipage_buffer is
* the largest size we support
*/
descSize = sizeof(struct vmbus_channel_packet_multipage_buffer) -
((MAX_MULTIPAGE_BUFFER_COUNT - PfnCount) *
descsize = sizeof(struct vmbus_channel_packet_multipage_buffer) -
((MAX_MULTIPAGE_BUFFER_COUNT - pfncount) *
sizeof(u64));
packetLen = descSize + BufferLen;
packetLenAligned = ALIGN_UP(packetLen, sizeof(u64));
packetlen = descsize + bufferlen;
packetlen_aligned = ALIGN_UP(packetlen, sizeof(u64));
/* ASSERT((packetLenAligned - packetLen) < sizeof(u64)); */
/* Setup the descriptor */
desc.type = VmbusPacketTypeDataUsingGpaDirect;
desc.flags = VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED;
desc.dataoffset8 = descSize >> 3; /* in 8-bytes grandularity */
desc.length8 = (u16)(packetLenAligned >> 3);
desc.transactionid = RequestId;
desc.dataoffset8 = descsize >> 3; /* in 8-bytes grandularity */
desc.length8 = (u16)(packetlen_aligned >> 3);
desc.transactionid = requestid;
desc.rangecount = 1;
desc.range.Length = MultiPageBuffer->Length;
desc.range.Offset = MultiPageBuffer->Offset;
desc.range.Length = multi_pagebuffer->Length;
desc.range.Offset = multi_pagebuffer->Offset;
memcpy(desc.range.PfnArray, MultiPageBuffer->PfnArray,
PfnCount * sizeof(u64));
memcpy(desc.range.PfnArray, multi_pagebuffer->PfnArray,
pfncount * sizeof(u64));
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);
sg_init_table(bufferlist, 3);
sg_set_buf(&bufferlist[0], &desc, descsize);
sg_set_buf(&bufferlist[1], buffer, bufferlen);
sg_set_buf(&bufferlist[2], &aligned_data,
packetlen_aligned - 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);
if (ret == 0 && !GetRingBufferInterruptMask(&channel->Outbound))
VmbusChannelSetEvent(channel);
return ret;
}
......@@ -886,35 +893,35 @@ int VmbusChannelSendPacketMultiPageBuffer(struct vmbus_channel *Channel,
/**
* VmbusChannelRecvPacket() - Retrieve the user packet on the specified channel
* @Channel: Pointer to vmbus_channel structure.
* @Buffer: Pointer to the buffer you want to receive the data into.
* @BufferLen: Maximum size of what the the buffer will hold
* @BufferActualLen: The actual size of the data after it was received
* @RequestId: Identifier of the request
* @channel: Pointer to vmbus_channel structure.
* @buffer: Pointer to the buffer you want to receive the data into.
* @bufferlen: Maximum size of what the the buffer will hold
* @buffer_actual_len: The actual size of the data after it was received
* @requestid: Identifier of the request
*
* Receives directly from the hyper-v vmbus and puts the data it received
* into Buffer. This will receive the data unparsed from hyper-v.
*
* Mainly used by Hyper-V drivers.
*/
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 *buffer_actual_len, u64 *requestid)
{
struct vmpacket_descriptor desc;
u32 packetLen;
u32 userLen;
u32 packetlen;
u32 userlen;
int ret;
unsigned long flags;
*BufferActualLen = 0;
*RequestId = 0;
*buffer_actual_len = 0;
*requestid = 0;
spin_lock_irqsave(&Channel->inbound_lock, flags);
spin_lock_irqsave(&channel->inbound_lock, flags);
ret = RingBufferPeek(&Channel->Inbound, &desc,
ret = RingBufferPeek(&channel->Inbound, &desc,
sizeof(struct vmpacket_descriptor));
if (ret != 0) {
spin_unlock_irqrestore(&Channel->inbound_lock, flags);
spin_unlock_irqrestore(&channel->inbound_lock, flags);
/* DPRINT_DBG(VMBUS, "nothing to read!!"); */
return 0;
......@@ -922,32 +929,32 @@ int VmbusChannelRecvPacket(struct vmbus_channel *Channel, void *Buffer,
/* VmbusChannelClearEvent(Channel); */
packetLen = desc.Length8 << 3;
userLen = packetLen - (desc.DataOffset8 << 3);
packetlen = desc.Length8 << 3;
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);
channel, channel->OfferMsg.ChildRelId, desc.Type,
desc.Flags, desc.TransactionId, packetlen, userlen);
*BufferActualLen = userLen;
*buffer_actual_len = userlen;
if (userLen > BufferLen) {
spin_unlock_irqrestore(&Channel->inbound_lock, flags);
if (userlen > bufferlen) {
spin_unlock_irqrestore(&channel->inbound_lock, flags);
DPRINT_ERR(VMBUS, "buffer too small - got %d needs %d",
BufferLen, userLen);
bufferlen, userlen);
return -1;
}
*RequestId = desc.TransactionId;
*requestid = desc.TransactionId;
/* Copy over the packet to the user buffer */
ret = RingBufferRead(&Channel->Inbound, Buffer, userLen,
ret = RingBufferRead(&channel->Inbound, buffer, userlen,
(desc.DataOffset8 << 3));
spin_unlock_irqrestore(&Channel->inbound_lock, flags);
spin_unlock_irqrestore(&channel->inbound_lock, flags);
return 0;
}
......@@ -956,25 +963,25 @@ EXPORT_SYMBOL(VmbusChannelRecvPacket);
/*
* VmbusChannelRecvPacketRaw - Retrieve the raw packet on the specified channel
*/
int VmbusChannelRecvPacketRaw(struct vmbus_channel *Channel, void *Buffer,
u32 BufferLen, u32 *BufferActualLen,
u64 *RequestId)
int VmbusChannelRecvPacketRaw(struct vmbus_channel *channel, void *buffer,
u32 bufferlen, u32 *buffer_actual_len,
u64 *requestid)
{
struct vmpacket_descriptor desc;
u32 packetLen;
u32 userLen;
u32 packetlen;
u32 userlen;
int ret;
unsigned long flags;
*BufferActualLen = 0;
*RequestId = 0;
*buffer_actual_len = 0;
*requestid = 0;
spin_lock_irqsave(&Channel->inbound_lock, flags);
spin_lock_irqsave(&channel->inbound_lock, flags);
ret = RingBufferPeek(&Channel->Inbound, &desc,
ret = RingBufferPeek(&channel->Inbound, &desc,
sizeof(struct vmpacket_descriptor));
if (ret != 0) {
spin_unlock_irqrestore(&Channel->inbound_lock, flags);
spin_unlock_irqrestore(&channel->inbound_lock, flags);
/* DPRINT_DBG(VMBUS, "nothing to read!!"); */
return 0;
......@@ -982,44 +989,44 @@ int VmbusChannelRecvPacketRaw(struct vmbus_channel *Channel, void *Buffer,
/* VmbusChannelClearEvent(Channel); */
packetLen = desc.Length8 << 3;
userLen = packetLen - (desc.DataOffset8 << 3);
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);
channel, channel->OfferMsg.ChildRelId, desc.Type,
desc.Flags, desc.TransactionId, packetlen, userlen);
*BufferActualLen = packetLen;
*buffer_actual_len = packetlen;
if (packetLen > BufferLen) {
spin_unlock_irqrestore(&Channel->inbound_lock, flags);
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);
"got space for only %d bytes", packetlen, bufferlen);
return -2;
}
*RequestId = desc.TransactionId;
*requestid = desc.TransactionId;
/* Copy over the entire packet to the user buffer */
ret = RingBufferRead(&Channel->Inbound, Buffer, packetLen, 0);
ret = RingBufferRead(&channel->Inbound, buffer, packetlen, 0);
spin_unlock_irqrestore(&Channel->inbound_lock, flags);
spin_unlock_irqrestore(&channel->inbound_lock, flags);
return 0;
}
/*
* VmbusChannelOnChannelEvent - Channel event callback
*/
void VmbusChannelOnChannelEvent(struct vmbus_channel *Channel)
void VmbusChannelOnChannelEvent(struct vmbus_channel *channel)
{
DumpVmbusChannel(Channel);
DumpVmbusChannel(channel);
/* ASSERT(Channel->OnChannelCallback); */
Channel->OnChannelCallback(Channel->ChannelCallbackContext);
channel->OnChannelCallback(channel->ChannelCallbackContext);
mod_timer(&Channel->poll_timer, jiffies + usecs_to_jiffies(100));
mod_timer(&channel->poll_timer, jiffies + usecs_to_jiffies(100));
}
/*
......@@ -1036,9 +1043,9 @@ void VmbusChannelOnTimer(unsigned long data)
/*
* DumpVmbusChannel - Dump vmbus channel info to the console
*/
static void DumpVmbusChannel(struct vmbus_channel *Channel)
static void DumpVmbusChannel(struct vmbus_channel *channel)
{
DPRINT_DBG(VMBUS, "Channel (%d)", Channel->OfferMsg.ChildRelId);
DumpRingInfo(&Channel->Outbound, "Outbound ");
DumpRingInfo(&Channel->Inbound, "Inbound ");
DPRINT_DBG(VMBUS, "Channel (%d)", channel->OfferMsg.ChildRelId);
DumpRingInfo(&channel->Outbound, "Outbound ");
DumpRingInfo(&channel->Inbound, "Inbound ");
}
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