/*
- *
* Copyright (c) 2009, Microsoft Corporation.
*
* This program is free software; you can redistribute it and/or modify it
*
* Authors:
* Hank Janssen <hjanssen@microsoft.com>
- *
*/
-
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/delay.h>
-#include <asm/io.h>
+#include <linux/io.h>
#include "osd.h"
#include "logging.h"
#include "NetVsc.h"
/* Globals */
-static const char* gDriverName="netvsc";
+static const char *gDriverName = "netvsc";
/* {F8615163-DF3E-46c5-913F-F2D2F965ED0E} */
static const struct hv_guid gNetVscDeviceType = {
}
};
+static int NetVscOnDeviceAdd(struct hv_device *Device, void *AdditionalInfo);
+
+static int NetVscOnDeviceRemove(struct hv_device *Device);
+
+static void NetVscOnCleanup(struct hv_driver *Driver);
+
+static void NetVscOnChannelCallback(void *context);
+
+static int NetVscInitializeSendBufferWithNetVsp(struct hv_device *Device);
+
+static int NetVscInitializeReceiveBufferWithNetVsp(struct hv_device *Device);
+
+static int NetVscDestroySendBuffer(struct NETVSC_DEVICE *NetDevice);
+
+static int NetVscDestroyReceiveBuffer(struct NETVSC_DEVICE *NetDevice);
+
+static int NetVscConnectToVsp(struct hv_device *Device);
+
+static void NetVscOnSendCompletion(struct hv_device *Device,
+ struct vmpacket_descriptor *Packet);
+
+static int NetVscOnSend(struct hv_device *Device,
+ struct hv_netvsc_packet *Packet);
+
+static void NetVscOnReceive(struct hv_device *Device,
+ struct vmpacket_descriptor *Packet);
+
+static void NetVscOnReceiveCompletion(void *Context);
+
+static void NetVscSendReceiveCompletion(struct hv_device *Device,
+ u64 TransactionId);
+
-/* Internal routines */
-static int
-NetVscOnDeviceAdd(
- struct hv_device *Device,
- void *AdditionalInfo
- );
-
-static int
-NetVscOnDeviceRemove(
- struct hv_device *Device
- );
-
-static void
-NetVscOnCleanup(
- struct hv_driver *Driver
- );
-
-static void
-NetVscOnChannelCallback(
- void * context
- );
-
-static int
-NetVscInitializeSendBufferWithNetVsp(
- struct hv_device *Device
- );
-
-static int
-NetVscInitializeReceiveBufferWithNetVsp(
- struct hv_device *Device
- );
-
-static int
-NetVscDestroySendBuffer(
- struct NETVSC_DEVICE *NetDevice
- );
-
-static int
-NetVscDestroyReceiveBuffer(
- struct NETVSC_DEVICE *NetDevice
- );
-
-static int
-NetVscConnectToVsp(
- struct hv_device *Device
- );
-
-static void
-NetVscOnSendCompletion(
- struct hv_device *Device,
- struct vmpacket_descriptor *Packet
- );
-
-static int
-NetVscOnSend(
- struct hv_device *Device,
- struct hv_netvsc_packet *Packet
- );
-
-static void
-NetVscOnReceive(
- struct hv_device *Device,
- struct vmpacket_descriptor *Packet
- );
-
-static void
-NetVscOnReceiveCompletion(
- void * Context
- );
-
-static void
-NetVscSendReceiveCompletion(
- struct hv_device *Device,
- u64 TransactionId
- );
-
-static inline struct NETVSC_DEVICE *AllocNetDevice(struct hv_device *Device)
+static struct NETVSC_DEVICE *AllocNetDevice(struct hv_device *Device)
{
struct NETVSC_DEVICE *netDevice;
return netDevice;
}
-static inline void FreeNetDevice(struct NETVSC_DEVICE *Device)
+static void FreeNetDevice(struct NETVSC_DEVICE *Device)
{
ASSERT(atomic_read(&Device->RefCount) == 0);
Device->Device->Extension = NULL;
/* Get the net device object iff exists and its refcount > 1 */
-static inline struct NETVSC_DEVICE *GetOutboundNetDevice(struct hv_device *Device)
+static struct NETVSC_DEVICE *GetOutboundNetDevice(struct hv_device *Device)
{
struct NETVSC_DEVICE *netDevice;
- netDevice = (struct NETVSC_DEVICE*)Device->Extension;
+ netDevice = Device->Extension;
if (netDevice && atomic_read(&netDevice->RefCount) > 1)
atomic_inc(&netDevice->RefCount);
else
}
/* Get the net device object iff exists and its refcount > 0 */
-static inline struct NETVSC_DEVICE *GetInboundNetDevice(struct hv_device *Device)
+static struct NETVSC_DEVICE *GetInboundNetDevice(struct hv_device *Device)
{
struct NETVSC_DEVICE *netDevice;
- netDevice = (struct NETVSC_DEVICE*)Device->Extension;
+ netDevice = Device->Extension;
if (netDevice && atomic_read(&netDevice->RefCount))
atomic_inc(&netDevice->RefCount);
else
return netDevice;
}
-static inline void PutNetDevice(struct hv_device *Device)
+static void PutNetDevice(struct hv_device *Device)
{
struct NETVSC_DEVICE *netDevice;
- netDevice = (struct NETVSC_DEVICE*)Device->Extension;
+ netDevice = Device->Extension;
ASSERT(netDevice);
atomic_dec(&netDevice->RefCount);
}
-static inline struct NETVSC_DEVICE *ReleaseOutboundNetDevice(struct hv_device *Device)
+static struct NETVSC_DEVICE *ReleaseOutboundNetDevice(struct hv_device *Device)
{
struct NETVSC_DEVICE *netDevice;
- netDevice = (struct NETVSC_DEVICE*)Device->Extension;
+ netDevice = Device->Extension;
if (netDevice == NULL)
return NULL;
/* Busy wait until the ref drop to 2, then set it to 1 */
while (atomic_cmpxchg(&netDevice->RefCount, 2, 1) != 2)
- {
udelay(100);
- }
return netDevice;
}
-static inline struct NETVSC_DEVICE *ReleaseInboundNetDevice(struct hv_device *Device)
+static struct NETVSC_DEVICE *ReleaseInboundNetDevice(struct hv_device *Device)
{
struct NETVSC_DEVICE *netDevice;
- netDevice = (struct NETVSC_DEVICE*)Device->Extension;
+ netDevice = Device->Extension;
if (netDevice == NULL)
return NULL;
/* Busy wait until the ref drop to 1, then set it to 0 */
while (atomic_cmpxchg(&netDevice->RefCount, 1, 0) != 1)
- {
udelay(100);
- }
Device->Extension = NULL;
return netDevice;
}
-/*++;
-
-
-Name:
- NetVscInitialize()
-
-Description:
- Main entry point
-
---*/
-int
-NetVscInitialize(
- struct hv_driver *drv
- )
+/**
+ * NetVscInitialize - Main entry point
+ */
+int NetVscInitialize(struct hv_driver *drv)
{
struct netvsc_driver *driver = (struct netvsc_driver *)drv;
- int ret=0;
DPRINT_ENTER(NETVSC);
- DPRINT_DBG(NETVSC, "sizeof(struct hv_netvsc_packet)=%zd, sizeof(struct nvsp_message)=%zd, sizeof(struct vmtransfer_page_packet_header)=%zd",
- sizeof(struct hv_netvsc_packet), sizeof(struct nvsp_message), sizeof(struct vmtransfer_page_packet_header));
+ DPRINT_DBG(NETVSC, "sizeof(struct hv_netvsc_packet)=%zd, "
+ "sizeof(struct nvsp_message)=%zd, "
+ "sizeof(struct vmtransfer_page_packet_header)=%zd",
+ sizeof(struct hv_netvsc_packet),
+ sizeof(struct nvsp_message),
+ sizeof(struct vmtransfer_page_packet_header));
/* Make sure we are at least 2 pages since 1 page is used for control */
ASSERT(driver->RingBufferSize >= (PAGE_SIZE << 1));
ASSERT(driver->OnLinkStatusChanged);
/* Setup the dispatch table */
- driver->Base.OnDeviceAdd = NetVscOnDeviceAdd;
- driver->Base.OnDeviceRemove = NetVscOnDeviceRemove;
- driver->Base.OnCleanup = NetVscOnCleanup;
+ driver->Base.OnDeviceAdd = NetVscOnDeviceAdd;
+ driver->Base.OnDeviceRemove = NetVscOnDeviceRemove;
+ driver->Base.OnCleanup = NetVscOnCleanup;
- driver->OnSend = NetVscOnSend;
+ driver->OnSend = NetVscOnSend;
RndisFilterInit(driver);
DPRINT_EXIT(NETVSC);
- return ret;
+ return 0;
}
-static int
-NetVscInitializeReceiveBufferWithNetVsp(
- struct hv_device *Device
- )
+static int NetVscInitializeReceiveBufferWithNetVsp(struct hv_device *Device)
{
- int ret=0;
+ int ret = 0;
struct NETVSC_DEVICE *netDevice;
struct nvsp_message *initPacket;
DPRINT_ENTER(NETVSC);
netDevice = GetOutboundNetDevice(Device);
- if (!netDevice)
- {
- DPRINT_ERR(NETVSC, "unable to get net device...device being destroyed?");
+ if (!netDevice) {
+ DPRINT_ERR(NETVSC, "unable to get net device..."
+ "device being destroyed?");
DPRINT_EXIT(NETVSC);
return -1;
}
ASSERT(netDevice->ReceiveBufferSize > 0);
- ASSERT((netDevice->ReceiveBufferSize & (PAGE_SIZE-1)) == 0); /* page-size grandularity */
+ /* page-size grandularity */
+ ASSERT((netDevice->ReceiveBufferSize & (PAGE_SIZE - 1)) == 0);
- netDevice->ReceiveBuffer = osd_PageAlloc(netDevice->ReceiveBufferSize >> PAGE_SHIFT);
- if (!netDevice->ReceiveBuffer)
- {
- DPRINT_ERR(NETVSC, "unable to allocate receive buffer of size %d", netDevice->ReceiveBufferSize);
+ netDevice->ReceiveBuffer =
+ osd_PageAlloc(netDevice->ReceiveBufferSize >> PAGE_SHIFT);
+ if (!netDevice->ReceiveBuffer) {
+ DPRINT_ERR(NETVSC,
+ "unable to allocate receive buffer of size %d",
+ netDevice->ReceiveBufferSize);
ret = -1;
goto Cleanup;
}
- ASSERT(((unsigned long)netDevice->ReceiveBuffer & (PAGE_SIZE-1)) == 0); /* page-aligned buffer */
+ /* page-aligned buffer */
+ ASSERT(((unsigned long)netDevice->ReceiveBuffer & (PAGE_SIZE - 1)) ==
+ 0);
DPRINT_INFO(NETVSC, "Establishing receive buffer's GPADL...");
* than the channel to establish the gpadl handle.
*/
ret = Device->Driver->VmbusChannelInterface.EstablishGpadl(Device,
- netDevice->ReceiveBuffer,
- netDevice->ReceiveBufferSize,
- &netDevice->ReceiveBufferGpadlHandle);
-
- if (ret != 0)
- {
- DPRINT_ERR(NETVSC, "unable to establish receive buffer's gpadl");
+ netDevice->ReceiveBuffer,
+ netDevice->ReceiveBufferSize,
+ &netDevice->ReceiveBufferGpadlHandle);
+ if (ret != 0) {
+ DPRINT_ERR(NETVSC,
+ "unable to establish receive buffer's gpadl");
goto Cleanup;
}
memset(initPacket, 0, sizeof(struct nvsp_message));
- initPacket->Header.MessageType = NvspMessage1TypeSendReceiveBuffer;
- initPacket->Messages.Version1Messages.SendReceiveBuffer.GpadlHandle = netDevice->ReceiveBufferGpadlHandle;
- initPacket->Messages.Version1Messages.SendReceiveBuffer.Id = NETVSC_RECEIVE_BUFFER_ID;
+ initPacket->Header.MessageType = NvspMessage1TypeSendReceiveBuffer;
+ initPacket->Messages.Version1Messages.SendReceiveBuffer.GpadlHandle = netDevice->ReceiveBufferGpadlHandle;
+ initPacket->Messages.Version1Messages.SendReceiveBuffer.Id = NETVSC_RECEIVE_BUFFER_ID;
/* Send the gpadl notification request */
ret = Device->Driver->VmbusChannelInterface.SendPacket(Device,
- initPacket,
- sizeof(struct nvsp_message),
- (unsigned long)initPacket,
- VmbusPacketTypeDataInBand,
- VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
- if (ret != 0)
- {
- DPRINT_ERR(NETVSC, "unable to send receive buffer's gpadl to netvsp");
+ initPacket,
+ sizeof(struct nvsp_message),
+ (unsigned long)initPacket,
+ VmbusPacketTypeDataInBand,
+ VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
+ if (ret != 0) {
+ DPRINT_ERR(NETVSC,
+ "unable to send receive buffer's gpadl to netvsp");
goto Cleanup;
}
osd_WaitEventWait(netDevice->ChannelInitEvent);
/* Check the response */
- if (initPacket->Messages.Version1Messages.SendReceiveBufferComplete.Status != NvspStatusSuccess)
- {
- DPRINT_ERR(NETVSC,
- "Unable to complete receive buffer initialzation with NetVsp - status %d",
- initPacket->Messages.Version1Messages.SendReceiveBufferComplete.Status);
+ if (initPacket->Messages.Version1Messages.SendReceiveBufferComplete.Status != NvspStatusSuccess) {
+ DPRINT_ERR(NETVSC, "Unable to complete receive buffer "
+ "initialzation with NetVsp - status %d",
+ initPacket->Messages.Version1Messages.SendReceiveBufferComplete.Status);
ret = -1;
goto Cleanup;
}
netDevice->ReceiveSectionCount = initPacket->Messages.Version1Messages.SendReceiveBufferComplete.NumSections;
netDevice->ReceiveSections = kmalloc(netDevice->ReceiveSectionCount * sizeof(struct nvsp_1_receive_buffer_section), GFP_KERNEL);
- if (netDevice->ReceiveSections == NULL)
- {
+ if (netDevice->ReceiveSections == NULL) {
ret = -1;
goto Cleanup;
}
initPacket->Messages.Version1Messages.SendReceiveBufferComplete.Sections,
netDevice->ReceiveSectionCount * sizeof(struct nvsp_1_receive_buffer_section));
- DPRINT_INFO(NETVSC,
- "Receive sections info (count %d, offset %d, endoffset %d, suballoc size %d, num suballocs %d)",
- netDevice->ReceiveSectionCount, netDevice->ReceiveSections[0].Offset, netDevice->ReceiveSections[0].EndOffset,
- netDevice->ReceiveSections[0].SubAllocationSize, netDevice->ReceiveSections[0].NumSubAllocations);
-
+ DPRINT_INFO(NETVSC, "Receive sections info (count %d, offset %d, "
+ "endoffset %d, suballoc size %d, num suballocs %d)",
+ netDevice->ReceiveSectionCount,
+ netDevice->ReceiveSections[0].Offset,
+ netDevice->ReceiveSections[0].EndOffset,
+ netDevice->ReceiveSections[0].SubAllocationSize,
+ netDevice->ReceiveSections[0].NumSubAllocations);
- /* For 1st release, there should only be 1 section that represents the entire receive buffer */
+ /*
+ * For 1st release, there should only be 1 section that represents the
+ * entire receive buffer
+ */
if (netDevice->ReceiveSectionCount != 1 ||
- netDevice->ReceiveSections->Offset != 0 )
- {
+ netDevice->ReceiveSections->Offset != 0) {
ret = -1;
goto Cleanup;
}
return ret;
}
-
-static int
-NetVscInitializeSendBufferWithNetVsp(
- struct hv_device *Device
- )
+static int NetVscInitializeSendBufferWithNetVsp(struct hv_device *Device)
{
- int ret=0;
+ int ret = 0;
struct NETVSC_DEVICE *netDevice;
struct nvsp_message *initPacket;
DPRINT_ENTER(NETVSC);
netDevice = GetOutboundNetDevice(Device);
- if (!netDevice)
- {
- DPRINT_ERR(NETVSC, "unable to get net device...device being destroyed?");
+ if (!netDevice) {
+ DPRINT_ERR(NETVSC, "unable to get net device..."
+ "device being destroyed?");
DPRINT_EXIT(NETVSC);
return -1;
}
ASSERT(netDevice->SendBufferSize > 0);
- ASSERT((netDevice->SendBufferSize & (PAGE_SIZE-1)) == 0); /* page-size grandularity */
-
- netDevice->SendBuffer = osd_PageAlloc(netDevice->SendBufferSize >> PAGE_SHIFT);
- if (!netDevice->SendBuffer)
- {
- DPRINT_ERR(NETVSC, "unable to allocate send buffer of size %d", netDevice->SendBufferSize);
+ /* page-size grandularity */
+ ASSERT((netDevice->SendBufferSize & (PAGE_SIZE - 1)) == 0);
+
+ netDevice->SendBuffer =
+ osd_PageAlloc(netDevice->SendBufferSize >> PAGE_SHIFT);
+ if (!netDevice->SendBuffer) {
+ DPRINT_ERR(NETVSC, "unable to allocate send buffer of size %d",
+ netDevice->SendBufferSize);
ret = -1;
goto Cleanup;
}
- ASSERT(((unsigned long)netDevice->SendBuffer & (PAGE_SIZE-1)) == 0); /* page-aligned buffer */
+ /* page-aligned buffer */
+ ASSERT(((unsigned long)netDevice->SendBuffer & (PAGE_SIZE - 1)) == 0);
DPRINT_INFO(NETVSC, "Establishing send buffer's GPADL...");
* than the channel to establish the gpadl handle.
*/
ret = Device->Driver->VmbusChannelInterface.EstablishGpadl(Device,
- netDevice->SendBuffer,
- netDevice->SendBufferSize,
- &netDevice->SendBufferGpadlHandle);
-
- if (ret != 0)
- {
+ netDevice->SendBuffer,
+ netDevice->SendBufferSize,
+ &netDevice->SendBufferGpadlHandle);
+ if (ret != 0) {
DPRINT_ERR(NETVSC, "unable to establish send buffer's gpadl");
goto Cleanup;
}
memset(initPacket, 0, sizeof(struct nvsp_message));
- initPacket->Header.MessageType = NvspMessage1TypeSendSendBuffer;
- initPacket->Messages.Version1Messages.SendReceiveBuffer.GpadlHandle = netDevice->SendBufferGpadlHandle;
- initPacket->Messages.Version1Messages.SendReceiveBuffer.Id = NETVSC_SEND_BUFFER_ID;
+ initPacket->Header.MessageType = NvspMessage1TypeSendSendBuffer;
+ initPacket->Messages.Version1Messages.SendReceiveBuffer.GpadlHandle = netDevice->SendBufferGpadlHandle;
+ initPacket->Messages.Version1Messages.SendReceiveBuffer.Id = NETVSC_SEND_BUFFER_ID;
/* Send the gpadl notification request */
ret = Device->Driver->VmbusChannelInterface.SendPacket(Device,
- initPacket,
- sizeof(struct nvsp_message),
- (unsigned long)initPacket,
- VmbusPacketTypeDataInBand,
- VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
- if (ret != 0)
- {
- DPRINT_ERR(NETVSC, "unable to send receive buffer's gpadl to netvsp");
+ initPacket, sizeof(struct nvsp_message),
+ (unsigned long)initPacket,
+ VmbusPacketTypeDataInBand,
+ VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
+ if (ret != 0) {
+ DPRINT_ERR(NETVSC,
+ "unable to send receive buffer's gpadl to netvsp");
goto Cleanup;
}
osd_WaitEventWait(netDevice->ChannelInitEvent);
/* Check the response */
- if (initPacket->Messages.Version1Messages.SendSendBufferComplete.Status != NvspStatusSuccess)
- {
- DPRINT_ERR(NETVSC,
- "Unable to complete send buffer initialzation with NetVsp - status %d",
- initPacket->Messages.Version1Messages.SendSendBufferComplete.Status);
+ if (initPacket->Messages.Version1Messages.SendSendBufferComplete.Status != NvspStatusSuccess) {
+ DPRINT_ERR(NETVSC, "Unable to complete send buffer "
+ "initialzation with NetVsp - status %d",
+ initPacket->Messages.Version1Messages.SendSendBufferComplete.Status);
ret = -1;
goto Cleanup;
}
return ret;
}
-static int
-NetVscDestroyReceiveBuffer(
- struct NETVSC_DEVICE *NetDevice
- )
+static int NetVscDestroyReceiveBuffer(struct NETVSC_DEVICE *NetDevice)
{
struct nvsp_message *revokePacket;
- int ret=0;
-
+ int ret = 0;
DPRINT_ENTER(NETVSC);
* NvspMessage1TypeSendReceiveBuffer msg) therefore, we need
* to send a revoke msg here
*/
- if (NetDevice->ReceiveSectionCount)
- {
- DPRINT_INFO(NETVSC, "Sending NvspMessage1TypeRevokeReceiveBuffer...");
+ if (NetDevice->ReceiveSectionCount) {
+ DPRINT_INFO(NETVSC,
+ "Sending NvspMessage1TypeRevokeReceiveBuffer...");
/* Send the revoke receive buffer */
revokePacket = &NetDevice->RevokePacket;
revokePacket->Header.MessageType = NvspMessage1TypeRevokeReceiveBuffer;
revokePacket->Messages.Version1Messages.RevokeReceiveBuffer.Id = NETVSC_RECEIVE_BUFFER_ID;
- ret = NetDevice->Device->Driver->VmbusChannelInterface.SendPacket(NetDevice->Device,
- revokePacket,
- sizeof(struct nvsp_message),
- (unsigned long)revokePacket,
- VmbusPacketTypeDataInBand,
- 0);
+ ret = NetDevice->Device->Driver->VmbusChannelInterface.SendPacket(
+ NetDevice->Device,
+ revokePacket,
+ sizeof(struct nvsp_message),
+ (unsigned long)revokePacket,
+ VmbusPacketTypeDataInBand, 0);
/*
* If we failed here, we might as well return and
* have a leak rather than continue and a bugchk
*/
- if (ret != 0)
- {
- DPRINT_ERR(NETVSC, "unable to send revoke receive buffer to netvsp");
+ if (ret != 0) {
+ DPRINT_ERR(NETVSC, "unable to send revoke receive "
+ "buffer to netvsp");
DPRINT_EXIT(NETVSC);
return -1;
}
}
/* Teardown the gpadl on the vsp end */
- if (NetDevice->ReceiveBufferGpadlHandle)
- {
+ if (NetDevice->ReceiveBufferGpadlHandle) {
DPRINT_INFO(NETVSC, "Tearing down receive buffer's GPADL...");
- ret = NetDevice->Device->Driver->VmbusChannelInterface.TeardownGpadl(NetDevice->Device,
- NetDevice->ReceiveBufferGpadlHandle);
+ ret = NetDevice->Device->Driver->VmbusChannelInterface.TeardownGpadl(
+ NetDevice->Device,
+ NetDevice->ReceiveBufferGpadlHandle);
/* If we failed here, we might as well return and have a leak rather than continue and a bugchk */
- if (ret != 0)
- {
- DPRINT_ERR(NETVSC, "unable to teardown receive buffer's gpadl");
+ if (ret != 0) {
+ DPRINT_ERR(NETVSC,
+ "unable to teardown receive buffer's gpadl");
DPRINT_EXIT(NETVSC);
return -1;
}
NetDevice->ReceiveBufferGpadlHandle = 0;
}
- if (NetDevice->ReceiveBuffer)
- {
+ if (NetDevice->ReceiveBuffer) {
DPRINT_INFO(NETVSC, "Freeing up receive buffer...");
/* Free up the receive buffer */
- osd_PageFree(NetDevice->ReceiveBuffer, NetDevice->ReceiveBufferSize >> PAGE_SHIFT);
+ osd_PageFree(NetDevice->ReceiveBuffer,
+ NetDevice->ReceiveBufferSize >> PAGE_SHIFT);
NetDevice->ReceiveBuffer = NULL;
}
- if (NetDevice->ReceiveSections)
- {
+ if (NetDevice->ReceiveSections) {
+ NetDevice->ReceiveSectionCount = 0;
kfree(NetDevice->ReceiveSections);
NetDevice->ReceiveSections = NULL;
- NetDevice->ReceiveSectionCount = 0;
}
DPRINT_EXIT(NETVSC);
return ret;
}
-
-
-
-static int
-NetVscDestroySendBuffer(
- struct NETVSC_DEVICE *NetDevice
- )
+static int NetVscDestroySendBuffer(struct NETVSC_DEVICE *NetDevice)
{
struct nvsp_message *revokePacket;
- int ret=0;
-
+ int ret = 0;
DPRINT_ENTER(NETVSC);
* NvspMessage1TypeSendReceiveBuffer msg) therefore, we need
* to send a revoke msg here
*/
- if (NetDevice->SendSectionSize)
- {
- DPRINT_INFO(NETVSC, "Sending NvspMessage1TypeRevokeSendBuffer...");
+ if (NetDevice->SendSectionSize) {
+ DPRINT_INFO(NETVSC,
+ "Sending NvspMessage1TypeRevokeSendBuffer...");
/* Send the revoke send buffer */
revokePacket = &NetDevice->RevokePacket;
revokePacket->Messages.Version1Messages.RevokeSendBuffer.Id = NETVSC_SEND_BUFFER_ID;
ret = NetDevice->Device->Driver->VmbusChannelInterface.SendPacket(NetDevice->Device,
- revokePacket,
- sizeof(struct nvsp_message),
- (unsigned long)revokePacket,
- VmbusPacketTypeDataInBand,
- 0);
- /* If we failed here, we might as well return and have a leak rather than continue and a bugchk */
- if (ret != 0)
- {
- DPRINT_ERR(NETVSC, "unable to send revoke send buffer to netvsp");
+ revokePacket,
+ sizeof(struct nvsp_message),
+ (unsigned long)revokePacket,
+ VmbusPacketTypeDataInBand, 0);
+ /*
+ * If we failed here, we might as well return and have a leak
+ * rather than continue and a bugchk
+ */
+ if (ret != 0) {
+ DPRINT_ERR(NETVSC, "unable to send revoke send buffer "
+ "to netvsp");
DPRINT_EXIT(NETVSC);
return -1;
}
}
/* Teardown the gpadl on the vsp end */
- if (NetDevice->SendBufferGpadlHandle)
- {
+ if (NetDevice->SendBufferGpadlHandle) {
DPRINT_INFO(NETVSC, "Tearing down send buffer's GPADL...");
- ret = NetDevice->Device->Driver->VmbusChannelInterface.TeardownGpadl(NetDevice->Device,
- NetDevice->SendBufferGpadlHandle);
+ ret = NetDevice->Device->Driver->VmbusChannelInterface.TeardownGpadl(NetDevice->Device, NetDevice->SendBufferGpadlHandle);
- /* If we failed here, we might as well return and have a leak rather than continue and a bugchk */
- if (ret != 0)
- {
- DPRINT_ERR(NETVSC, "unable to teardown send buffer's gpadl");
+ /*
+ * If we failed here, we might as well return and have a leak
+ * rather than continue and a bugchk
+ */
+ if (ret != 0) {
+ DPRINT_ERR(NETVSC, "unable to teardown send buffer's "
+ "gpadl");
DPRINT_EXIT(NETVSC);
return -1;
}
NetDevice->SendBufferGpadlHandle = 0;
}
- if (NetDevice->SendBuffer)
- {
+ if (NetDevice->SendBuffer) {
DPRINT_INFO(NETVSC, "Freeing up send buffer...");
/* Free up the receive buffer */
- osd_PageFree(NetDevice->SendBuffer, NetDevice->SendBufferSize >> PAGE_SHIFT);
+ osd_PageFree(NetDevice->SendBuffer,
+ NetDevice->SendBufferSize >> PAGE_SHIFT);
NetDevice->SendBuffer = NULL;
}
}
-
-static int
-NetVscConnectToVsp(
- struct hv_device *Device
- )
+static int NetVscConnectToVsp(struct hv_device *Device)
{
- int ret=0;
+ int ret;
struct NETVSC_DEVICE *netDevice;
struct nvsp_message *initPacket;
int ndisVersion;
DPRINT_ENTER(NETVSC);
netDevice = GetOutboundNetDevice(Device);
- if (!netDevice)
- {
- DPRINT_ERR(NETVSC, "unable to get net device...device being destroyed?");
+ if (!netDevice) {
+ DPRINT_ERR(NETVSC, "unable to get net device..."
+ "device being destroyed?");
DPRINT_EXIT(NETVSC);
return -1;
}
memset(initPacket, 0, sizeof(struct nvsp_message));
initPacket->Header.MessageType = NvspMessageTypeInit;
- initPacket->Messages.InitMessages.Init.MinProtocolVersion = NVSP_MIN_PROTOCOL_VERSION;
- initPacket->Messages.InitMessages.Init.MaxProtocolVersion = NVSP_MAX_PROTOCOL_VERSION;
+ initPacket->Messages.InitMessages.Init.MinProtocolVersion = NVSP_MIN_PROTOCOL_VERSION;
+ initPacket->Messages.InitMessages.Init.MaxProtocolVersion = NVSP_MAX_PROTOCOL_VERSION;
DPRINT_INFO(NETVSC, "Sending NvspMessageTypeInit...");
/* Send the init request */
ret = Device->Driver->VmbusChannelInterface.SendPacket(Device,
- initPacket,
- sizeof(struct nvsp_message),
- (unsigned long)initPacket,
- VmbusPacketTypeDataInBand,
- VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
-
- if( ret != 0)
- {
+ initPacket,
+ sizeof(struct nvsp_message),
+ (unsigned long)initPacket,
+ VmbusPacketTypeDataInBand,
+ VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
+
+ if (ret != 0) {
DPRINT_ERR(NETVSC, "unable to send NvspMessageTypeInit");
goto Cleanup;
}
initPacket->Messages.InitMessages.InitComplete.Status,
initPacket->Messages.InitMessages.InitComplete.MaximumMdlChainLength);
- if (initPacket->Messages.InitMessages.InitComplete.Status != NvspStatusSuccess)
- {
- DPRINT_ERR(NETVSC, "unable to initialize with netvsp (status 0x%x)", initPacket->Messages.InitMessages.InitComplete.Status);
+ if (initPacket->Messages.InitMessages.InitComplete.Status !=
+ NvspStatusSuccess) {
+ DPRINT_ERR(NETVSC,
+ "unable to initialize with netvsp (status 0x%x)",
+ initPacket->Messages.InitMessages.InitComplete.Status);
ret = -1;
goto Cleanup;
}
- if (initPacket->Messages.InitMessages.InitComplete.NegotiatedProtocolVersion != NVSP_PROTOCOL_VERSION_1)
- {
- DPRINT_ERR(NETVSC, "unable to initialize with netvsp (version expected 1 got %d)",
- initPacket->Messages.InitMessages.InitComplete.NegotiatedProtocolVersion);
+ if (initPacket->Messages.InitMessages.InitComplete.NegotiatedProtocolVersion != NVSP_PROTOCOL_VERSION_1) {
+ DPRINT_ERR(NETVSC, "unable to initialize with netvsp "
+ "(version expected 1 got %d)",
+ initPacket->Messages.InitMessages.InitComplete.NegotiatedProtocolVersion);
ret = -1;
goto Cleanup;
}
/* Send the ndis version */
memset(initPacket, 0, sizeof(struct nvsp_message));
- ndisVersion = 0x00050000;
+ ndisVersion = 0x00050000;
- initPacket->Header.MessageType = NvspMessage1TypeSendNdisVersion;
- initPacket->Messages.Version1Messages.SendNdisVersion.NdisMajorVersion = (ndisVersion & 0xFFFF0000) >> 16;
- initPacket->Messages.Version1Messages.SendNdisVersion.NdisMinorVersion = ndisVersion & 0xFFFF;
+ initPacket->Header.MessageType = NvspMessage1TypeSendNdisVersion;
+ initPacket->Messages.Version1Messages.SendNdisVersion.NdisMajorVersion =
+ (ndisVersion & 0xFFFF0000) >> 16;
+ initPacket->Messages.Version1Messages.SendNdisVersion.NdisMinorVersion =
+ ndisVersion & 0xFFFF;
/* Send the init request */
ret = Device->Driver->VmbusChannelInterface.SendPacket(Device,
- initPacket,
- sizeof(struct nvsp_message),
- (unsigned long)initPacket,
- VmbusPacketTypeDataInBand,
- 0);
- if (ret != 0)
- {
- DPRINT_ERR(NETVSC, "unable to send NvspMessage1TypeSendNdisVersion");
+ initPacket,
+ sizeof(struct nvsp_message),
+ (unsigned long)initPacket,
+ VmbusPacketTypeDataInBand, 0);
+ if (ret != 0) {
+ DPRINT_ERR(NETVSC,
+ "unable to send NvspMessage1TypeSendNdisVersion");
ret = -1;
goto Cleanup;
}
/* Post the big receive buffer to NetVSP */
ret = NetVscInitializeReceiveBufferWithNetVsp(Device);
if (ret == 0)
- {
ret = NetVscInitializeSendBufferWithNetVsp(Device);
- }
Cleanup:
PutNetDevice(Device);
return ret;
}
-static void
-NetVscDisconnectFromVsp(
- struct NETVSC_DEVICE *NetDevice
- )
+static void NetVscDisconnectFromVsp(struct NETVSC_DEVICE *NetDevice)
{
DPRINT_ENTER(NETVSC);
DPRINT_EXIT(NETVSC);
}
-
-/*++
-
-Name:
- NetVscOnDeviceAdd()
-
-Description:
- Callback when the device belonging to this driver is added
-
---*/
-static int
-NetVscOnDeviceAdd(
- struct hv_device *Device,
- void *AdditionalInfo
- )
+/**
+ * NetVscOnDeviceAdd - Callback when the device belonging to this driver is added
+ */
+static int NetVscOnDeviceAdd(struct hv_device *Device, void *AdditionalInfo)
{
- int ret=0;
+ int ret = 0;
int i;
-
struct NETVSC_DEVICE *netDevice;
struct hv_netvsc_packet *packet;
LIST_ENTRY *entry;
-
- struct netvsc_driver *netDriver = (struct netvsc_driver *)Device->Driver;
+ struct netvsc_driver *netDriver =
+ (struct netvsc_driver *)Device->Driver;
DPRINT_ENTER(NETVSC);
netDevice = AllocNetDevice(Device);
- if (!netDevice)
- {
+ if (!netDevice) {
ret = -1;
goto Cleanup;
}
INITIALIZE_LIST_HEAD(&netDevice->ReceivePacketList);
- for (i=0; i < NETVSC_RECEIVE_PACKETLIST_COUNT; i++)
- {
- packet = kzalloc(sizeof(struct hv_netvsc_packet) + (NETVSC_RECEIVE_SG_COUNT* sizeof(struct hv_page_buffer)), GFP_KERNEL);
- if (!packet)
- {
- DPRINT_DBG(NETVSC, "unable to allocate netvsc pkts for receive pool (wanted %d got %d)", NETVSC_RECEIVE_PACKETLIST_COUNT, i);
+ for (i = 0; i < NETVSC_RECEIVE_PACKETLIST_COUNT; i++) {
+ packet = kzalloc(sizeof(struct hv_netvsc_packet) +
+ (NETVSC_RECEIVE_SG_COUNT *
+ sizeof(struct hv_page_buffer)), GFP_KERNEL);
+ if (!packet) {
+ DPRINT_DBG(NETVSC, "unable to allocate netvsc pkts "
+ "for receive pool (wanted %d got %d)",
+ NETVSC_RECEIVE_PACKETLIST_COUNT, i);
break;
}
- INSERT_TAIL_LIST(&netDevice->ReceivePacketList, &packet->ListEntry);
+ INSERT_TAIL_LIST(&netDevice->ReceivePacketList,
+ &packet->ListEntry);
}
netDevice->ChannelInitEvent = osd_WaitEventCreate();
/* Open the channel */
ret = Device->Driver->VmbusChannelInterface.Open(Device,
- netDriver->RingBufferSize,
- netDriver->RingBufferSize,
- NULL, 0,
- NetVscOnChannelCallback,
- Device
- );
+ netDriver->RingBufferSize,
+ netDriver->RingBufferSize,
+ NULL, 0,
+ NetVscOnChannelCallback,
+ Device);
- if (ret != 0)
- {
+ if (ret != 0) {
DPRINT_ERR(NETVSC, "unable to open channel: %d", ret);
ret = -1;
goto Cleanup;
/* Connect with the NetVsp */
ret = NetVscConnectToVsp(Device);
- if (ret != 0)
- {
+ if (ret != 0) {
DPRINT_ERR(NETVSC, "unable to connect to NetVSP - %d", ret);
ret = -1;
goto Close;
}
- DPRINT_INFO(NETVSC, "*** NetVSC channel handshake result - %d ***", ret);
+ DPRINT_INFO(NETVSC, "*** NetVSC channel handshake result - %d ***",
+ ret);
DPRINT_EXIT(NETVSC);
return ret;
Cleanup:
- if (netDevice)
- {
+ if (netDevice) {
kfree(netDevice->ChannelInitEvent);
- while (!IsListEmpty(&netDevice->ReceivePacketList))
- {
+ while (!IsListEmpty(&netDevice->ReceivePacketList)) {
entry = REMOVE_HEAD_LIST(&netDevice->ReceivePacketList);
- packet = CONTAINING_RECORD(entry, struct hv_netvsc_packet, ListEntry);
+ packet = CONTAINING_RECORD(entry,
+ struct hv_netvsc_packet,
+ ListEntry);
kfree(packet);
}
return ret;
}
-
-/*++
-
-Name:
- NetVscOnDeviceRemove()
-
-Description:
- Callback when the root bus device is removed
-
---*/
-static int
-NetVscOnDeviceRemove(
- struct hv_device *Device
- )
+/**
+ * NetVscOnDeviceRemove - Callback when the root bus device is removed
+ */
+static int NetVscOnDeviceRemove(struct hv_device *Device)
{
struct NETVSC_DEVICE *netDevice;
struct hv_netvsc_packet *netvscPacket;
- int ret=0;
LIST_ENTRY *entry;
DPRINT_ENTER(NETVSC);
- DPRINT_INFO(NETVSC, "Disabling outbound traffic on net device (%p)...", Device->Extension);
+ DPRINT_INFO(NETVSC, "Disabling outbound traffic on net device (%p)...",
+ Device->Extension);
/* Stop outbound traffic ie sends and receives completions */
netDevice = ReleaseOutboundNetDevice(Device);
- if (!netDevice)
- {
+ if (!netDevice) {
DPRINT_ERR(NETVSC, "No net device present!!");
return -1;
}
/* Wait for all send completions */
- while (atomic_read(&netDevice->NumOutstandingSends))
- {
- DPRINT_INFO(NETVSC, "waiting for %d requests to complete...", atomic_read(&netDevice->NumOutstandingSends));
-
+ while (atomic_read(&netDevice->NumOutstandingSends)) {
+ DPRINT_INFO(NETVSC, "waiting for %d requests to complete...",
+ atomic_read(&netDevice->NumOutstandingSends));
udelay(100);
}
NetVscDisconnectFromVsp(netDevice);
- DPRINT_INFO(NETVSC, "Disabling inbound traffic on net device (%p)...", Device->Extension);
+ DPRINT_INFO(NETVSC, "Disabling inbound traffic on net device (%p)...",
+ Device->Extension);
/* Stop inbound traffic ie receives and sends completions */
netDevice = ReleaseInboundNetDevice(Device);
Device->Driver->VmbusChannelInterface.Close(Device);
/* Release all resources */
- while (!IsListEmpty(&netDevice->ReceivePacketList))
- {
+ while (!IsListEmpty(&netDevice->ReceivePacketList)) {
entry = REMOVE_HEAD_LIST(&netDevice->ReceivePacketList);
- netvscPacket = CONTAINING_RECORD(entry, struct hv_netvsc_packet, ListEntry);
+ netvscPacket = CONTAINING_RECORD(entry,
+ struct hv_netvsc_packet,
+ ListEntry);
kfree(netvscPacket);
}
FreeNetDevice(netDevice);
DPRINT_EXIT(NETVSC);
- return ret;
+ return 0;
}
-
-
-/*++
-
-Name:
- NetVscOnCleanup()
-
-Description:
- Perform any cleanup when the driver is removed
-
---*/
-static void
-NetVscOnCleanup(
- struct hv_driver *drv
- )
+/**
+ * NetVscOnCleanup - Perform any cleanup when the driver is removed
+ */
+static void NetVscOnCleanup(struct hv_driver *drv)
{
DPRINT_ENTER(NETVSC);
-
DPRINT_EXIT(NETVSC);
}
-static void
-NetVscOnSendCompletion(
- struct hv_device *Device,
- struct vmpacket_descriptor *Packet
- )
+static void NetVscOnSendCompletion(struct hv_device *Device,
+ struct vmpacket_descriptor *Packet)
{
struct NETVSC_DEVICE *netDevice;
struct nvsp_message *nvspPacket;
DPRINT_ENTER(NETVSC);
netDevice = GetInboundNetDevice(Device);
- if (!netDevice)
- {
- DPRINT_ERR(NETVSC, "unable to get net device...device being destroyed?");
+ if (!netDevice) {
+ DPRINT_ERR(NETVSC, "unable to get net device..."
+ "device being destroyed?");
DPRINT_EXIT(NETVSC);
return;
}
nvspPacket = (struct nvsp_message *)((unsigned long)Packet + (Packet->DataOffset8 << 3));
- DPRINT_DBG(NETVSC, "send completion packet - type %d", nvspPacket->Header.MessageType);
+ DPRINT_DBG(NETVSC, "send completion packet - type %d",
+ nvspPacket->Header.MessageType);
- if (nvspPacket->Header.MessageType == NvspMessageTypeInitComplete ||
- nvspPacket->Header.MessageType == NvspMessage1TypeSendReceiveBufferComplete ||
- nvspPacket->Header.MessageType == NvspMessage1TypeSendSendBufferComplete)
- {
+ if ((nvspPacket->Header.MessageType == NvspMessageTypeInitComplete) ||
+ (nvspPacket->Header.MessageType ==
+ NvspMessage1TypeSendReceiveBufferComplete) ||
+ (nvspPacket->Header.MessageType ==
+ NvspMessage1TypeSendSendBufferComplete)) {
/* Copy the response back */
- memcpy(&netDevice->ChannelInitPacket, nvspPacket, sizeof(struct nvsp_message));
+ memcpy(&netDevice->ChannelInitPacket, nvspPacket,
+ sizeof(struct nvsp_message));
osd_WaitEventSet(netDevice->ChannelInitEvent);
- }
- else if (nvspPacket->Header.MessageType == NvspMessage1TypeSendRNDISPacketComplete)
- {
+ } else if (nvspPacket->Header.MessageType ==
+ NvspMessage1TypeSendRNDISPacketComplete) {
/* Get the send context */
nvscPacket = (struct hv_netvsc_packet *)(unsigned long)Packet->TransactionId;
ASSERT(nvscPacket);
nvscPacket->Completion.Send.OnSendCompletion(nvscPacket->Completion.Send.SendCompletionContext);
atomic_dec(&netDevice->NumOutstandingSends);
- }
- else
- {
- DPRINT_ERR(NETVSC, "Unknown send completion packet type - %d received!!", nvspPacket->Header.MessageType);
+ } else {
+ DPRINT_ERR(NETVSC, "Unknown send completion packet type - "
+ "%d received!!", nvspPacket->Header.MessageType);
}
PutNetDevice(Device);
DPRINT_EXIT(NETVSC);
}
-
-
-static int
-NetVscOnSend(
- struct hv_device *Device,
- struct hv_netvsc_packet *Packet
- )
+static int NetVscOnSend(struct hv_device *Device,
+ struct hv_netvsc_packet *Packet)
{
struct NETVSC_DEVICE *netDevice;
- int ret=0;
+ int ret = 0;
struct nvsp_message sendMessage;
DPRINT_ENTER(NETVSC);
netDevice = GetOutboundNetDevice(Device);
- if (!netDevice)
- {
- DPRINT_ERR(NETVSC, "net device (%p) shutting down...ignoring outbound packets", netDevice);
+ if (!netDevice) {
+ DPRINT_ERR(NETVSC, "net device (%p) shutting down..."
+ "ignoring outbound packets", netDevice);
DPRINT_EXIT(NETVSC);
return -2;
}
sendMessage.Header.MessageType = NvspMessage1TypeSendRNDISPacket;
- if (Packet->IsDataPacket)
- sendMessage.Messages.Version1Messages.SendRNDISPacket.ChannelType = 0;/* 0 is RMC_DATA; */
- else
- sendMessage.Messages.Version1Messages.SendRNDISPacket.ChannelType = 1;/* 1 is RMC_CONTROL; */
+ if (Packet->IsDataPacket) {
+ /* 0 is RMC_DATA; */
+ sendMessage.Messages.Version1Messages.SendRNDISPacket.ChannelType = 0;
+ } else {
+ /* 1 is RMC_CONTROL; */
+ sendMessage.Messages.Version1Messages.SendRNDISPacket.ChannelType = 1;
+ }
/* Not using send buffer section */
- sendMessage.Messages.Version1Messages.SendRNDISPacket.SendBufferSectionIndex = 0xFFFFFFFF;
- sendMessage.Messages.Version1Messages.SendRNDISPacket.SendBufferSectionSize = 0;
-
- if (Packet->PageBufferCount)
- {
- ret = Device->Driver->VmbusChannelInterface.SendPacketPageBuffer(Device,
- Packet->PageBuffers,
- Packet->PageBufferCount,
- &sendMessage,
- sizeof(struct nvsp_message),
- (unsigned long)Packet);
- }
- else
- {
+ sendMessage.Messages.Version1Messages.SendRNDISPacket.SendBufferSectionIndex = 0xFFFFFFFF;
+ sendMessage.Messages.Version1Messages.SendRNDISPacket.SendBufferSectionSize = 0;
+
+ if (Packet->PageBufferCount) {
+ ret = Device->Driver->VmbusChannelInterface.SendPacketPageBuffer(
+ Device, Packet->PageBuffers,
+ Packet->PageBufferCount,
+ &sendMessage,
+ sizeof(struct nvsp_message),
+ (unsigned long)Packet);
+ } else {
ret = Device->Driver->VmbusChannelInterface.SendPacket(Device,
- &sendMessage,
- sizeof(struct nvsp_message),
- (unsigned long)Packet,
- VmbusPacketTypeDataInBand,
- VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
+ &sendMessage,
+ sizeof(struct nvsp_message),
+ (unsigned long)Packet,
+ VmbusPacketTypeDataInBand,
+ VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
}
if (ret != 0)
- {
- DPRINT_ERR(NETVSC, "Unable to send packet %p ret %d", Packet, ret);
- }
+ DPRINT_ERR(NETVSC, "Unable to send packet %p ret %d",
+ Packet, ret);
atomic_inc(&netDevice->NumOutstandingSends);
PutNetDevice(Device);
return ret;
}
-
-static void
-NetVscOnReceive(
- struct hv_device *Device,
- struct vmpacket_descriptor *Packet
- )
+static void NetVscOnReceive(struct hv_device *Device,
+ struct vmpacket_descriptor *Packet)
{
struct NETVSC_DEVICE *netDevice;
struct vmtransfer_page_packet_header *vmxferpagePacket;
struct nvsp_message *nvspPacket;
- struct hv_netvsc_packet *netvscPacket=NULL;
- LIST_ENTRY* entry;
+ struct hv_netvsc_packet *netvscPacket = NULL;
+ LIST_ENTRY *entry;
unsigned long start;
unsigned long end, endVirtual;
/* struct netvsc_driver *netvscDriver; */
- struct xferpage_packet *xferpagePacket=NULL;
+ struct xferpage_packet *xferpagePacket = NULL;
LIST_ENTRY listHead;
-
- int i=0, j=0;
- int count=0, bytesRemain=0;
+ int i, j;
+ int count = 0, bytesRemain = 0;
unsigned long flags;
DPRINT_ENTER(NETVSC);
netDevice = GetInboundNetDevice(Device);
- if (!netDevice)
- {
- DPRINT_ERR(NETVSC, "unable to get net device...device being destroyed?");
+ if (!netDevice) {
+ DPRINT_ERR(NETVSC, "unable to get net device..."
+ "device being destroyed?");
DPRINT_EXIT(NETVSC);
return;
}
- /* All inbound packets other than send completion should be xfer page packet */
- if (Packet->Type != VmbusPacketTypeDataUsingTransferPages)
- {
- DPRINT_ERR(NETVSC, "Unknown packet type received - %d", Packet->Type);
+ /*
+ * All inbound packets other than send completion should be xfer page
+ * packet
+ */
+ if (Packet->Type != VmbusPacketTypeDataUsingTransferPages) {
+ DPRINT_ERR(NETVSC, "Unknown packet type received - %d",
+ Packet->Type);
PutNetDevice(Device);
return;
}
- nvspPacket = (struct nvsp_message*)((unsigned long)Packet + (Packet->DataOffset8 << 3));
+ nvspPacket = (struct nvsp_message *)((unsigned long)Packet +
+ (Packet->DataOffset8 << 3));
/* Make sure this is a valid nvsp packet */
- if (nvspPacket->Header.MessageType != NvspMessage1TypeSendRNDISPacket )
- {
- DPRINT_ERR(NETVSC, "Unknown nvsp packet type received - %d", nvspPacket->Header.MessageType);
+ if (nvspPacket->Header.MessageType != NvspMessage1TypeSendRNDISPacket) {
+ DPRINT_ERR(NETVSC, "Unknown nvsp packet type received - %d",
+ nvspPacket->Header.MessageType);
PutNetDevice(Device);
return;
}
- DPRINT_DBG(NETVSC, "NVSP packet received - type %d", nvspPacket->Header.MessageType);
+ DPRINT_DBG(NETVSC, "NVSP packet received - type %d",
+ nvspPacket->Header.MessageType);
vmxferpagePacket = (struct vmtransfer_page_packet_header *)Packet;
- if (vmxferpagePacket->TransferPageSetId != NETVSC_RECEIVE_BUFFER_ID)
- {
- DPRINT_ERR(NETVSC, "Invalid xfer page set id - expecting %x got %x", NETVSC_RECEIVE_BUFFER_ID, vmxferpagePacket->TransferPageSetId);
+ if (vmxferpagePacket->TransferPageSetId != NETVSC_RECEIVE_BUFFER_ID) {
+ DPRINT_ERR(NETVSC, "Invalid xfer page set id - "
+ "expecting %x got %x", NETVSC_RECEIVE_BUFFER_ID,
+ vmxferpagePacket->TransferPageSetId);
PutNetDevice(Device);
return;
}
- DPRINT_DBG(NETVSC, "xfer page - range count %d", vmxferpagePacket->RangeCount);
+ DPRINT_DBG(NETVSC, "xfer page - range count %d",
+ vmxferpagePacket->RangeCount);
INITIALIZE_LIST_HEAD(&listHead);
* fulfil
*/
spin_lock_irqsave(&netDevice->receive_packet_list_lock, flags);
- while (!IsListEmpty(&netDevice->ReceivePacketList))
- {
+ while (!IsListEmpty(&netDevice->ReceivePacketList)) {
entry = REMOVE_HEAD_LIST(&netDevice->ReceivePacketList);
- netvscPacket = CONTAINING_RECORD(entry, struct hv_netvsc_packet, ListEntry);
+ netvscPacket = CONTAINING_RECORD(entry,
+ struct hv_netvsc_packet,
+ ListEntry);
INSERT_TAIL_LIST(&listHead, &netvscPacket->ListEntry);
* page and at least 1 for the range) i.e. we can handled
* some of the xfer page packet ranges...
*/
- if (count < 2)
- {
- DPRINT_ERR(NETVSC, "Got only %d netvsc pkt...needed %d pkts. Dropping this xfer page packet completely!", count, vmxferpagePacket->RangeCount+1);
+ if (count < 2) {
+ DPRINT_ERR(NETVSC, "Got only %d netvsc pkt...needed %d pkts. "
+ "Dropping this xfer page packet completely!",
+ count, vmxferpagePacket->RangeCount + 1);
/* Return it to the freelist */
spin_lock_irqsave(&netDevice->receive_packet_list_lock, flags);
- for (i=count; i != 0; i--)
- {
+ for (i = count; i != 0; i--) {
entry = REMOVE_HEAD_LIST(&listHead);
- netvscPacket = CONTAINING_RECORD(entry, struct hv_netvsc_packet, ListEntry);
+ netvscPacket = CONTAINING_RECORD(entry,
+ struct hv_netvsc_packet,
+ ListEntry);
- INSERT_TAIL_LIST(&netDevice->ReceivePacketList, &netvscPacket->ListEntry);
+ INSERT_TAIL_LIST(&netDevice->ReceivePacketList,
+ &netvscPacket->ListEntry);
}
- spin_unlock_irqrestore(&netDevice->receive_packet_list_lock, flags);
+ spin_unlock_irqrestore(&netDevice->receive_packet_list_lock,
+ flags);
- NetVscSendReceiveCompletion(Device, vmxferpagePacket->d.TransactionId);
+ NetVscSendReceiveCompletion(Device,
+ vmxferpagePacket->d.TransactionId);
PutNetDevice(Device);
return;
/* Remove the 1st packet to represent the xfer page packet itself */
entry = REMOVE_HEAD_LIST(&listHead);
- xferpagePacket = CONTAINING_RECORD(entry, struct xferpage_packet, ListEntry);
- xferpagePacket->Count = count - 1; /* This is how much we can satisfy */
- ASSERT(xferpagePacket->Count > 0 && xferpagePacket->Count <= vmxferpagePacket->RangeCount);
-
- if (xferpagePacket->Count != vmxferpagePacket->RangeCount)
- {
- DPRINT_INFO(NETVSC, "Needed %d netvsc pkts to satisy this xfer page...got %d", vmxferpagePacket->RangeCount, xferpagePacket->Count);
+ xferpagePacket = CONTAINING_RECORD(entry, struct xferpage_packet,
+ ListEntry);
+ /* This is how much we can satisfy */
+ xferpagePacket->Count = count - 1;
+ ASSERT(xferpagePacket->Count > 0 && xferpagePacket->Count <=
+ vmxferpagePacket->RangeCount);
+
+ if (xferpagePacket->Count != vmxferpagePacket->RangeCount) {
+ DPRINT_INFO(NETVSC, "Needed %d netvsc pkts to satisy this xfer "
+ "page...got %d", vmxferpagePacket->RangeCount,
+ xferpagePacket->Count);
}
/* Each range represents 1 RNDIS pkt that contains 1 ethernet frame */
- for (i=0; i < (count - 1); i++)
- {
+ for (i = 0; i < (count - 1); i++) {
entry = REMOVE_HEAD_LIST(&listHead);
- netvscPacket = CONTAINING_RECORD(entry, struct hv_netvsc_packet, ListEntry);
+ netvscPacket = CONTAINING_RECORD(entry,
+ struct hv_netvsc_packet,
+ ListEntry);
/* Initialize the netvsc packet */
netvscPacket->XferPagePacket = xferpagePacket;
- netvscPacket->Completion.Recv.OnReceiveCompletion = NetVscOnReceiveCompletion;
- netvscPacket->Completion.Recv.ReceiveCompletionContext = netvscPacket;
+ netvscPacket->Completion.Recv.OnReceiveCompletion =
+ NetVscOnReceiveCompletion;
+ netvscPacket->Completion.Recv.ReceiveCompletionContext =
+ netvscPacket;
netvscPacket->Device = Device;
- netvscPacket->Completion.Recv.ReceiveCompletionTid = vmxferpagePacket->d.TransactionId; /* Save this so that we can send it back */
+ /* Save this so that we can send it back */
+ netvscPacket->Completion.Recv.ReceiveCompletionTid =
+ vmxferpagePacket->d.TransactionId;
- netvscPacket->TotalDataBufferLength = vmxferpagePacket->Ranges[i].ByteCount;
+ netvscPacket->TotalDataBufferLength =
+ vmxferpagePacket->Ranges[i].ByteCount;
netvscPacket->PageBufferCount = 1;
- ASSERT(vmxferpagePacket->Ranges[i].ByteOffset + vmxferpagePacket->Ranges[i].ByteCount < netDevice->ReceiveBufferSize);
+ ASSERT(vmxferpagePacket->Ranges[i].ByteOffset +
+ vmxferpagePacket->Ranges[i].ByteCount <
+ netDevice->ReceiveBufferSize);
- netvscPacket->PageBuffers[0].Length = vmxferpagePacket->Ranges[i].ByteCount;
+ netvscPacket->PageBuffers[0].Length =
+ vmxferpagePacket->Ranges[i].ByteCount;
- start = virt_to_phys((void*)((unsigned long)netDevice->ReceiveBuffer + vmxferpagePacket->Ranges[i].ByteOffset));
+ start = virt_to_phys((void *)((unsigned long)netDevice->ReceiveBuffer + vmxferpagePacket->Ranges[i].ByteOffset));
netvscPacket->PageBuffers[0].Pfn = start >> PAGE_SHIFT;
endVirtual = (unsigned long)netDevice->ReceiveBuffer
+ vmxferpagePacket->Ranges[i].ByteOffset
- + vmxferpagePacket->Ranges[i].ByteCount -1;
- end = virt_to_phys((void*)endVirtual);
+ + vmxferpagePacket->Ranges[i].ByteCount - 1;
+ end = virt_to_phys((void *)endVirtual);
/* Calculate the page relative offset */
- netvscPacket->PageBuffers[0].Offset = vmxferpagePacket->Ranges[i].ByteOffset & (PAGE_SIZE -1);
- if ((end >> PAGE_SHIFT) != (start>>PAGE_SHIFT)) {
- /* Handle frame across multiple pages: */
- netvscPacket->PageBuffers[0].Length =
- (netvscPacket->PageBuffers[0].Pfn <<PAGE_SHIFT) + PAGE_SIZE - start;
- bytesRemain = netvscPacket->TotalDataBufferLength - netvscPacket->PageBuffers[0].Length;
- for (j=1; j<NETVSC_PACKET_MAXPAGE; j++) {
- netvscPacket->PageBuffers[j].Offset = 0;
- if (bytesRemain <= PAGE_SIZE) {
- netvscPacket->PageBuffers[j].Length = bytesRemain;
- bytesRemain = 0;
- } else {
- netvscPacket->PageBuffers[j].Length = PAGE_SIZE;
- bytesRemain -= PAGE_SIZE;
+ netvscPacket->PageBuffers[0].Offset =
+ vmxferpagePacket->Ranges[i].ByteOffset & (PAGE_SIZE - 1);
+ if ((end >> PAGE_SHIFT) != (start >> PAGE_SHIFT)) {
+ /* Handle frame across multiple pages: */
+ netvscPacket->PageBuffers[0].Length =
+ (netvscPacket->PageBuffers[0].Pfn << PAGE_SHIFT)
+ + PAGE_SIZE - start;
+ bytesRemain = netvscPacket->TotalDataBufferLength -
+ netvscPacket->PageBuffers[0].Length;
+ for (j = 1; j < NETVSC_PACKET_MAXPAGE; j++) {
+ netvscPacket->PageBuffers[j].Offset = 0;
+ if (bytesRemain <= PAGE_SIZE) {
+ netvscPacket->PageBuffers[j].Length = bytesRemain;
+ bytesRemain = 0;
+ } else {
+ netvscPacket->PageBuffers[j].Length = PAGE_SIZE;
+ bytesRemain -= PAGE_SIZE;
+ }
+ netvscPacket->PageBuffers[j].Pfn =
+ virt_to_phys((void *)(endVirtual - bytesRemain)) >> PAGE_SHIFT;
+ netvscPacket->PageBufferCount++;
+ if (bytesRemain == 0)
+ break;
}
- netvscPacket->PageBuffers[j].Pfn =
- virt_to_phys((void*)(endVirtual - bytesRemain)) >> PAGE_SHIFT;
- netvscPacket->PageBufferCount++;
- if (bytesRemain == 0)
- break;
- }
- ASSERT(bytesRemain == 0);
+ ASSERT(bytesRemain == 0);
}
- DPRINT_DBG(NETVSC, "[%d] - (abs offset %u len %u) => (pfn %llx, offset %u, len %u)",
- i,
- vmxferpagePacket->Ranges[i].ByteOffset,
- vmxferpagePacket->Ranges[i].ByteCount,
- netvscPacket->PageBuffers[0].Pfn,
- netvscPacket->PageBuffers[0].Offset,
- netvscPacket->PageBuffers[0].Length);
+ DPRINT_DBG(NETVSC, "[%d] - (abs offset %u len %u) => "
+ "(pfn %llx, offset %u, len %u)", i,
+ vmxferpagePacket->Ranges[i].ByteOffset,
+ vmxferpagePacket->Ranges[i].ByteCount,
+ netvscPacket->PageBuffers[0].Pfn,
+ netvscPacket->PageBuffers[0].Offset,
+ netvscPacket->PageBuffers[0].Length);
/* Pass it to the upper layer */
((struct netvsc_driver *)Device->Driver)->OnReceiveCallback(Device, netvscPacket);
DPRINT_EXIT(NETVSC);
}
-
-static void
-NetVscSendReceiveCompletion(
- struct hv_device *Device,
- u64 TransactionId
- )
+static void NetVscSendReceiveCompletion(struct hv_device *Device,
+ u64 TransactionId)
{
struct nvsp_message recvcompMessage;
- int retries=0;
- int ret=0;
+ int retries = 0;
+ int ret;
- DPRINT_DBG(NETVSC, "Sending receive completion pkt - %llx", TransactionId);
+ DPRINT_DBG(NETVSC, "Sending receive completion pkt - %llx",
+ TransactionId);
- recvcompMessage.Header.MessageType = NvspMessage1TypeSendRNDISPacketComplete;
+ recvcompMessage.Header.MessageType =
+ NvspMessage1TypeSendRNDISPacketComplete;
/* FIXME: Pass in the status */
recvcompMessage.Messages.Version1Messages.SendRNDISPacketComplete.Status = NvspStatusSuccess;
retry_send_cmplt:
/* Send the completion */
ret = Device->Driver->VmbusChannelInterface.SendPacket(Device,
- &recvcompMessage,
- sizeof(struct nvsp_message),
- TransactionId,
- VmbusPacketTypeCompletion,
- 0);
- if (ret == 0) /* success */
- {
+ &recvcompMessage,
+ sizeof(struct nvsp_message),
+ TransactionId,
+ VmbusPacketTypeCompletion, 0);
+ if (ret == 0) {
+ /* success */
/* no-op */
- }
- else if (ret == -1) /* no more room...wait a bit and attempt to retry 3 times */
- {
+ } else if (ret == -1) {
+ /* no more room...wait a bit and attempt to retry 3 times */
retries++;
- DPRINT_ERR(NETVSC, "unable to send receive completion pkt (tid %llx)...retrying %d", TransactionId, retries);
+ DPRINT_ERR(NETVSC, "unable to send receive completion pkt "
+ "(tid %llx)...retrying %d", TransactionId, retries);
- if (retries < 4)
- {
+ if (retries < 4) {
udelay(100);
goto retry_send_cmplt;
+ } else {
+ DPRINT_ERR(NETVSC, "unable to send receive completion "
+ "pkt (tid %llx)...give up retrying",
+ TransactionId);
}
- else
- {
- DPRINT_ERR(NETVSC, "unable to send receive completion pkt (tid %llx)...give up retrying", TransactionId);
- }
- }
- else
- {
- DPRINT_ERR(NETVSC, "unable to send receive completion pkt - %llx", TransactionId);
+ } else {
+ DPRINT_ERR(NETVSC, "unable to send receive completion pkt - "
+ "%llx", TransactionId);
}
}
/* Send a receive completion packet to RNDIS device (ie NetVsp) */
-static void
-NetVscOnReceiveCompletion(
- void * Context)
+static void NetVscOnReceiveCompletion(void *Context)
{
- struct hv_netvsc_packet *packet = (struct hv_netvsc_packet*)Context;
- struct hv_device *device = (struct hv_device*)packet->Device;
+ struct hv_netvsc_packet *packet = Context;
+ struct hv_device *device = (struct hv_device *)packet->Device;
struct NETVSC_DEVICE *netDevice;
- u64 transactionId=0;
+ u64 transactionId = 0;
bool fSendReceiveComp = false;
unsigned long flags;
ASSERT(packet->XferPagePacket);
- /* Even though it seems logical to do a GetOutboundNetDevice() here to send out receive completion, */
- /* we are using GetInboundNetDevice() since we may have disable outbound traffic already. */
+ /*
+ * Even though it seems logical to do a GetOutboundNetDevice() here to
+ * send out receive completion, we are using GetInboundNetDevice()
+ * since we may have disable outbound traffic already.
+ */
netDevice = GetInboundNetDevice(device);
- if (!netDevice)
- {
- DPRINT_ERR(NETVSC, "unable to get net device...device being destroyed?");
+ if (!netDevice) {
+ DPRINT_ERR(NETVSC, "unable to get net device..."
+ "device being destroyed?");
DPRINT_EXIT(NETVSC);
return;
}
ASSERT(packet->XferPagePacket->Count > 0);
packet->XferPagePacket->Count--;
- /* Last one in the line that represent 1 xfer page packet. */
- /* Return the xfer page packet itself to the freelist */
- if (packet->XferPagePacket->Count == 0)
- {
+ /*
+ * Last one in the line that represent 1 xfer page packet.
+ * Return the xfer page packet itself to the freelist
+ */
+ if (packet->XferPagePacket->Count == 0) {
fSendReceiveComp = true;
transactionId = packet->Completion.Recv.ReceiveCompletionTid;
- INSERT_TAIL_LIST(&netDevice->ReceivePacketList, &packet->XferPagePacket->ListEntry);
+ INSERT_TAIL_LIST(&netDevice->ReceivePacketList,
+ &packet->XferPagePacket->ListEntry);
}
/* Put the packet back */
/* Send a receive completion for the xfer page packet */
if (fSendReceiveComp)
- {
NetVscSendReceiveCompletion(device, transactionId);
- }
PutNetDevice(device);
DPRINT_EXIT(NETVSC);
}
-
-
-void
-NetVscOnChannelCallback(
- void * Context
- )
+void NetVscOnChannelCallback(void *Context)
{
- const int netPacketSize=2048;
- int ret=0;
- struct hv_device *device=(struct hv_device*)Context;
+ const int netPacketSize = 2048;
+ int ret;
+ struct hv_device *device = Context;
struct NETVSC_DEVICE *netDevice;
-
u32 bytesRecvd;
u64 requestId;
unsigned char packet[netPacketSize];
struct vmpacket_descriptor *desc;
- unsigned char *buffer=packet;
- int bufferlen=netPacketSize;
+ unsigned char *buffer = packet;
+ int bufferlen = netPacketSize;
DPRINT_ENTER(NETVSC);
ASSERT(device);
netDevice = GetInboundNetDevice(device);
- if (!netDevice)
- {
- DPRINT_ERR(NETVSC, "net device (%p) shutting down...ignoring inbound packets", netDevice);
+ if (!netDevice) {
+ DPRINT_ERR(NETVSC, "net device (%p) shutting down..."
+ "ignoring inbound packets", netDevice);
DPRINT_EXIT(NETVSC);
return;
}
- do
- {
- ret = device->Driver->VmbusChannelInterface.RecvPacketRaw(device,
- buffer,
- bufferlen,
- &bytesRecvd,
- &requestId);
-
- if (ret == 0)
- {
- if (bytesRecvd > 0)
- {
- DPRINT_DBG(NETVSC, "receive %d bytes, tid %llx", bytesRecvd, requestId);
-
- desc = (struct vmpacket_descriptor*)buffer;
- switch (desc->Type)
- {
- case VmbusPacketTypeCompletion:
- NetVscOnSendCompletion(device, desc);
- break;
-
- case VmbusPacketTypeDataUsingTransferPages:
- NetVscOnReceive(device, desc);
- break;
-
- default:
- DPRINT_ERR(NETVSC, "unhandled packet type %d, tid %llx len %d\n", desc->Type, requestId, bytesRecvd);
- break;
+ do {
+ ret = device->Driver->VmbusChannelInterface.RecvPacketRaw(
+ device, buffer, bufferlen,
+ &bytesRecvd, &requestId);
+ if (ret == 0) {
+ if (bytesRecvd > 0) {
+ DPRINT_DBG(NETVSC, "receive %d bytes, tid %llx",
+ bytesRecvd, requestId);
+
+ desc = (struct vmpacket_descriptor *)buffer;
+ switch (desc->Type) {
+ case VmbusPacketTypeCompletion:
+ NetVscOnSendCompletion(device, desc);
+ break;
+
+ case VmbusPacketTypeDataUsingTransferPages:
+ NetVscOnReceive(device, desc);
+ break;
+
+ default:
+ DPRINT_ERR(NETVSC,
+ "unhandled packet type %d, "
+ "tid %llx len %d\n",
+ desc->Type, requestId,
+ bytesRecvd);
+ break;
}
/* reset */
- if (bufferlen > netPacketSize)
- {
+ if (bufferlen > netPacketSize) {
kfree(buffer);
-
buffer = packet;
bufferlen = netPacketSize;
}
- }
- else
- {
- /* DPRINT_DBG(NETVSC, "nothing else to read..."); */
-
+ } else {
/* reset */
- if (bufferlen > netPacketSize)
- {
+ if (bufferlen > netPacketSize) {
kfree(buffer);
-
buffer = packet;
bufferlen = netPacketSize;
}
break;
}
- }
- else if (ret == -2) /* Handle large packet */
- {
+ } else if (ret == -2) {
+ /* Handle large packet */
buffer = kmalloc(bytesRecvd, GFP_ATOMIC);
- if (buffer == NULL)
- {
+ if (buffer == NULL) {
/* Try again next time around */
- DPRINT_ERR(NETVSC, "unable to allocate buffer of size (%d)!!", bytesRecvd);
+ DPRINT_ERR(NETVSC,
+ "unable to allocate buffer of size "
+ "(%d)!!", bytesRecvd);
break;
}
bufferlen = bytesRecvd;
- }
- else
- {
+ } else {
ASSERT(0);
}
} while (1);
projects / karo-tx-linux.git / commitdiff