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Staging: hv: remove use of internal list routines in NetVsc 

The hv driver has it's own linked list routines.  This removes them
from NetVsc and uses the kernels routines instead.

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Cc: Hank Janssen <hjanssen@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Bill Pemberton 2009-09-11 21:46:43 -04:00 committed by Greg Kroah-Hartman
parent 03a6b30a8c
commit d29274efb7
3 changed files with 32 additions and 53 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

73
drivers/staging/hv/NetVsc.c
View File

@ -711,8 +711,7 @@ static int NetVscOnDeviceAdd(struct hv_device *Device, void *AdditionalInfo)
int ret = 0;
int i;
struct netvsc_device *netDevice;
struct hv_netvsc_packet *packet;
LIST_ENTRY *entry;
struct hv_netvsc_packet *packet, *pos;
struct netvsc_driver *netDriver =
(struct netvsc_driver *)Device->Driver;
@ -732,7 +731,7 @@ static int NetVscOnDeviceAdd(struct hv_device *Device, void *AdditionalInfo)
netDevice->SendBufferSize = NETVSC_SEND_BUFFER_SIZE;
INITIALIZE_LIST_HEAD(&netDevice->ReceivePacketList);
INIT_LIST_HEAD(&netDevice->ReceivePacketList);
for (i = 0; i < NETVSC_RECEIVE_PACKETLIST_COUNT; i++) {
packet = kzalloc(sizeof(struct hv_netvsc_packet) +
@ -744,9 +743,8 @@ static int NetVscOnDeviceAdd(struct hv_device *Device, void *AdditionalInfo)
NETVSC_RECEIVE_PACKETLIST_COUNT, i);
break;
}
INSERT_TAIL_LIST(&netDevice->ReceivePacketList,
&packet->ListEntry);
list_add_tail(&packet->ListEntry,
&netDevice->ReceivePacketList);
}
netDevice->ChannelInitEvent = osd_WaitEventCreate();
@ -790,11 +788,10 @@ static int NetVscOnDeviceAdd(struct hv_device *Device, void *AdditionalInfo)
if (netDevice) {
kfree(netDevice->ChannelInitEvent);
while (!IsListEmpty(&netDevice->ReceivePacketList)) {
entry = REMOVE_HEAD_LIST(&netDevice->ReceivePacketList);
packet = CONTAINING_RECORD(entry,
struct hv_netvsc_packet,
ListEntry);
list_for_each_entry_safe(packet, pos,
&netDevice->ReceivePacketList,
ListEntry) {
list_del(&packet->ListEntry);
kfree(packet);
}
@ -814,8 +811,7 @@ static int NetVscOnDeviceAdd(struct hv_device *Device, void *AdditionalInfo)
static int NetVscOnDeviceRemove(struct hv_device *Device)
{
struct netvsc_device *netDevice;
struct hv_netvsc_packet *netvscPacket;
LIST_ENTRY *entry;
struct hv_netvsc_packet *netvscPacket, *pos;
DPRINT_ENTER(NETVSC);
@ -853,12 +849,9 @@ static int NetVscOnDeviceRemove(struct hv_device *Device)
Device->Driver->VmbusChannelInterface.Close(Device);
/* Release all resources */
while (!IsListEmpty(&netDevice->ReceivePacketList)) {
entry = REMOVE_HEAD_LIST(&netDevice->ReceivePacketList);
netvscPacket = CONTAINING_RECORD(entry,
struct hv_netvsc_packet,
ListEntry);
list_for_each_entry_safe(netvscPacket, pos,
&netDevice->ReceivePacketList, ListEntry) {
list_del(&netvscPacket->ListEntry);
kfree(netvscPacket);
}
@ -994,15 +987,14 @@ static void NetVscOnReceive(struct hv_device *Device,
struct vmtransfer_page_packet_header *vmxferpagePacket;
struct nvsp_message *nvspPacket;
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;
LIST_ENTRY listHead;
int i, j;
int count = 0, bytesRemain = 0;
unsigned long flags;
LIST_HEAD(listHead);
DPRINT_ENTER(NETVSC);
@ -1052,8 +1044,6 @@ static void NetVscOnReceive(struct hv_device *Device,
DPRINT_DBG(NETVSC, "xfer page - range count %d",
vmxferpagePacket->RangeCount);
INITIALIZE_LIST_HEAD(&listHead);
/*
* Grab free packets (range count + 1) to represent this xfer
* page packet. +1 to represent the xfer page packet itself.
@ -1061,14 +1051,8 @@ static void NetVscOnReceive(struct hv_device *Device,
* fulfil
*/
spin_lock_irqsave(&netDevice->receive_packet_list_lock, flags);
while (!IsListEmpty(&netDevice->ReceivePacketList)) {
entry = REMOVE_HEAD_LIST(&netDevice->ReceivePacketList);
netvscPacket = CONTAINING_RECORD(entry,
struct hv_netvsc_packet,
ListEntry);
INSERT_TAIL_LIST(&listHead, &netvscPacket->ListEntry);
while (!list_empty(&netDevice->ReceivePacketList)) {
list_move_tail(&netDevice->ReceivePacketList, &listHead);
if (++count == vmxferpagePacket->RangeCount + 1)
break;
}
@ -1087,13 +1071,8 @@ static void NetVscOnReceive(struct hv_device *Device,
/* Return it to the freelist */
spin_lock_irqsave(&netDevice->receive_packet_list_lock, flags);
for (i = count; i != 0; i--) {
entry = REMOVE_HEAD_LIST(&listHead);
netvscPacket = CONTAINING_RECORD(entry,
struct hv_netvsc_packet,
ListEntry);
INSERT_TAIL_LIST(&netDevice->ReceivePacketList,
&netvscPacket->ListEntry);
list_move_tail(&listHead,
&netDevice->ReceivePacketList);
}
spin_unlock_irqrestore(&netDevice->receive_packet_list_lock,
flags);
@ -1106,9 +1085,10 @@ static void NetVscOnReceive(struct hv_device *Device,
}
/* Remove the 1st packet to represent the xfer page packet itself */
entry = REMOVE_HEAD_LIST(&listHead);
xferpagePacket = CONTAINING_RECORD(entry, struct xferpage_packet,
xferpagePacket = list_entry(&listHead, struct xferpage_packet,
ListEntry);
list_del(&xferpagePacket->ListEntry);
/* This is how much we can satisfy */
xferpagePacket->Count = count - 1;
ASSERT(xferpagePacket->Count > 0 && xferpagePacket->Count <=
@ -1122,10 +1102,9 @@ static void NetVscOnReceive(struct hv_device *Device,
/* Each range represents 1 RNDIS pkt that contains 1 ethernet frame */
for (i = 0; i < (count - 1); i++) {
entry = REMOVE_HEAD_LIST(&listHead);
netvscPacket = CONTAINING_RECORD(entry,
struct hv_netvsc_packet,
netvscPacket = list_entry(&listHead, struct hv_netvsc_packet,
ListEntry);
list_del(&netvscPacket->ListEntry);
/* Initialize the netvsc packet */
netvscPacket->XferPagePacket = xferpagePacket;
@ -1198,7 +1177,7 @@ static void NetVscOnReceive(struct hv_device *Device,
NetVscOnReceiveCompletion(netvscPacket->Completion.Recv.ReceiveCompletionContext);
}
ASSERT(IsListEmpty(&listHead));
ASSERT(list_empty(&listHead));
PutNetDevice(Device);
DPRINT_EXIT(NETVSC);
@ -1290,13 +1269,13 @@ static void NetVscOnReceiveCompletion(void *Context)
if (packet->XferPagePacket->Count == 0) {
fSendReceiveComp = true;
transactionId = packet->Completion.Recv.ReceiveCompletionTid;
list_add_tail(&packet->XferPagePacket->ListEntry,
&netDevice->ReceivePacketList);
INSERT_TAIL_LIST(&netDevice->ReceivePacketList,
&packet->XferPagePacket->ListEntry);
}
/* Put the packet back */
INSERT_TAIL_LIST(&netDevice->ReceivePacketList, &packet->ListEntry);
list_add_tail(&packet->ListEntry, &netDevice->ReceivePacketList);
spin_unlock_irqrestore(&netDevice->receive_packet_list_lock, flags);
/* Send a receive completion for the xfer page packet */

4
drivers/staging/hv/NetVsc.h
View File

@ -24,9 +24,9 @@
#ifndef _NETVSC_H_
#define _NETVSC_H_
#include <linux/list.h>
#include "VmbusPacketFormat.h"
#include "VmbusChannelInterface.h"
#include "List.h"
#include "NetVscApi.h"
@ -299,7 +299,7 @@ struct netvsc_device {
* List of free preallocated hv_netvsc_packet to represent receive
* packet
*/
LIST_ENTRY ReceivePacketList;
struct list_head ReceivePacketList;
spinlock_t receive_packet_list_lock;
/* Send buffer allocated by us but manages by NetVSP */

4
drivers/staging/hv/NetVscApi.h
View File

@ -37,7 +37,7 @@ struct hv_netvsc_packet;
/* Represent the xfer page packet which contains 1 or more netvsc packet */
struct xferpage_packet {
LIST_ENTRY ListEntry;
struct list_head ListEntry;
/* # of netvsc packets this xfer packet contains */
u32 Count;
@ -52,7 +52,7 @@ struct xferpage_packet {
*/
struct hv_netvsc_packet {
/* Bookkeeping stuff */
LIST_ENTRY ListEntry;
struct list_head ListEntry;
struct hv_device *Device;
bool IsDataPacket;