Staging: hv: coding style cleanups for Connection.c
Everything is clean except for some very long lines that need a bit more code rework to resolve. That will have to be done by someone that can test the code. Cc: Hank Janssen <hjanssen@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Greg Kroah-Hartman
parent
7dd03fc4be
commit
fd8b85eae9
1 changed files with 90 additions and 178 deletions
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@ -20,8 +20,6 @@
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* Hank Janssen <hjanssen@microsoft.com>
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*
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*/
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#include <linux/kernel.h>
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#include <linux/mm.h>
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#include <linux/vmalloc.h>
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@ -29,27 +27,18 @@
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#include "logging.h"
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#include "VmbusPrivate.h"
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/* Globals */
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struct VMBUS_CONNECTION gVmbusConnection = {
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.ConnectState = Disconnected,
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.NextGpadlHandle = ATOMIC_INIT(0xE1E10),
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};
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/*++
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Name:
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VmbusConnect()
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Description:
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Sends a connect request on the partition service connection
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--*/
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/**
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* VmbusConnect - Sends a connect request on the partition service connection
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*/
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int VmbusConnect(void)
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{
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int ret=0;
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int ret = 0;
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struct vmbus_channel_msginfo *msgInfo = NULL;
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struct vmbus_channel_initiate_contact *msg;
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unsigned long flags;
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@ -63,8 +52,7 @@ int VmbusConnect(void)
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/* Initialize the vmbus connection */
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gVmbusConnection.ConnectState = Connecting;
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gVmbusConnection.WorkQueue = create_workqueue("hv_vmbus_con");
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if (!gVmbusConnection.WorkQueue)
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{
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if (!gVmbusConnection.WorkQueue) {
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ret = -1;
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goto Cleanup;
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}
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@ -80,29 +68,30 @@ int VmbusConnect(void)
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* abstraction stuff
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*/
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gVmbusConnection.InterruptPage = osd_PageAlloc(1);
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if (gVmbusConnection.InterruptPage == NULL)
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{
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if (gVmbusConnection.InterruptPage == NULL) {
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ret = -1;
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goto Cleanup;
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}
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gVmbusConnection.RecvInterruptPage = gVmbusConnection.InterruptPage;
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gVmbusConnection.SendInterruptPage = (void*)((unsigned long)gVmbusConnection.InterruptPage + (PAGE_SIZE >> 1));
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gVmbusConnection.SendInterruptPage =
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(void *)((unsigned long)gVmbusConnection.InterruptPage +
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(PAGE_SIZE >> 1));
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/* Setup the monitor
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* notification facility. The 1st page for parent->child and
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* the 2nd page for child->parent
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/*
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* Setup the monitor notification facility. The 1st page for
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* parent->child and the 2nd page for child->parent
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*/
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gVmbusConnection.MonitorPages = osd_PageAlloc(2);
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if (gVmbusConnection.MonitorPages == NULL)
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{
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if (gVmbusConnection.MonitorPages == NULL) {
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ret = -1;
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goto Cleanup;
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}
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msgInfo = kzalloc(sizeof(*msgInfo) + sizeof(struct vmbus_channel_initiate_contact), GFP_KERNEL);
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if (msgInfo == NULL)
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{
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msgInfo = kzalloc(sizeof(*msgInfo) +
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sizeof(struct vmbus_channel_initiate_contact),
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GFP_KERNEL);
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if (msgInfo == NULL) {
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ret = -1;
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goto Cleanup;
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}
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@ -114,24 +103,27 @@ int VmbusConnect(void)
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msg->VMBusVersionRequested = VMBUS_REVISION_NUMBER;
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msg->InterruptPage = virt_to_phys(gVmbusConnection.InterruptPage);
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msg->MonitorPage1 = virt_to_phys(gVmbusConnection.MonitorPages);
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msg->MonitorPage2 = virt_to_phys((void *)((unsigned long)gVmbusConnection.MonitorPages + PAGE_SIZE));
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msg->MonitorPage2 = virt_to_phys(
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(void *)((unsigned long)gVmbusConnection.MonitorPages +
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PAGE_SIZE));
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/*
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* Add to list before we send the request since we may
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* receive the response before returning from this routine
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*/
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spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags);
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INSERT_TAIL_LIST(&gVmbusConnection.ChannelMsgList, &msgInfo->MsgListEntry);
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INSERT_TAIL_LIST(&gVmbusConnection.ChannelMsgList,
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&msgInfo->MsgListEntry);
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spin_unlock_irqrestore(&gVmbusConnection.channelmsg_lock, flags);
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DPRINT_DBG(VMBUS, "Vmbus connection - interrupt pfn %llx, monitor1 pfn %llx,, monitor2 pfn %llx",
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msg->InterruptPage, msg->MonitorPage1, msg->MonitorPage2);
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DPRINT_DBG(VMBUS, "Vmbus connection - interrupt pfn %llx, "
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"monitor1 pfn %llx,, monitor2 pfn %llx",
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msg->InterruptPage, msg->MonitorPage1, msg->MonitorPage2);
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DPRINT_DBG(VMBUS, "Sending channel initiate msg...");
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ret = VmbusPostMessage(msg, sizeof(struct vmbus_channel_initiate_contact));
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if (ret != 0)
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{
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ret = VmbusPostMessage(msg,
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sizeof(struct vmbus_channel_initiate_contact));
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if (ret != 0) {
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REMOVE_ENTRY_LIST(&msgInfo->MsgListEntry);
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goto Cleanup;
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}
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@ -142,21 +134,18 @@ int VmbusConnect(void)
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REMOVE_ENTRY_LIST(&msgInfo->MsgListEntry);
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/* Check if successful */
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if (msgInfo->Response.VersionResponse.VersionSupported)
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{
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if (msgInfo->Response.VersionResponse.VersionSupported) {
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DPRINT_INFO(VMBUS, "Vmbus connected!!");
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gVmbusConnection.ConnectState = Connected;
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}
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else
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{
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DPRINT_ERR(VMBUS, "Vmbus connection failed!!...current version (%d) not supported", VMBUS_REVISION_NUMBER);
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} else {
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DPRINT_ERR(VMBUS, "Vmbus connection failed!!..."
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"current version (%d) not supported",
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VMBUS_REVISION_NUMBER);
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ret = -1;
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goto Cleanup;
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}
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kfree(msgInfo->WaitEvent);
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kfree(msgInfo);
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DPRINT_EXIT(VMBUS);
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@ -164,29 +153,23 @@ int VmbusConnect(void)
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return 0;
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Cleanup:
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gVmbusConnection.ConnectState = Disconnected;
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if (gVmbusConnection.WorkQueue)
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destroy_workqueue(gVmbusConnection.WorkQueue);
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if (gVmbusConnection.InterruptPage)
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{
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if (gVmbusConnection.InterruptPage) {
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osd_PageFree(gVmbusConnection.InterruptPage, 1);
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gVmbusConnection.InterruptPage = NULL;
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}
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if (gVmbusConnection.MonitorPages)
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{
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if (gVmbusConnection.MonitorPages) {
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osd_PageFree(gVmbusConnection.MonitorPages, 2);
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gVmbusConnection.MonitorPages = NULL;
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}
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if (msgInfo)
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{
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if (msgInfo->WaitEvent)
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kfree(msgInfo->WaitEvent);
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if (msgInfo) {
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kfree(msgInfo->WaitEvent);
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kfree(msgInfo);
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}
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@ -195,19 +178,12 @@ int VmbusConnect(void)
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return ret;
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}
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/*++
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Name:
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VmbusDisconnect()
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Description:
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Sends a disconnect request on the partition service connection
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--*/
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/**
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* VmbusDisconnect - Sends a disconnect request on the partition service connection
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*/
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int VmbusDisconnect(void)
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{
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int ret=0;
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int ret = 0;
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struct vmbus_channel_message_header *msg;
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DPRINT_ENTER(VMBUS);
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@ -220,17 +196,14 @@ int VmbusDisconnect(void)
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msg->MessageType = ChannelMessageUnload;
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ret = VmbusPostMessage(msg, sizeof(struct vmbus_channel_message_header));
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ret = VmbusPostMessage(msg,
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sizeof(struct vmbus_channel_message_header));
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if (ret != 0)
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{
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goto Cleanup;
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}
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osd_PageFree(gVmbusConnection.InterruptPage, 1);
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/* TODO: iterate thru the msg list and free up */
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destroy_workqueue(gVmbusConnection.WorkQueue);
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gVmbusConnection.ConnectState = Disconnected;
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@ -238,41 +211,28 @@ int VmbusDisconnect(void)
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DPRINT_INFO(VMBUS, "Vmbus disconnected!!");
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Cleanup:
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if (msg)
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{
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kfree(msg);
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}
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kfree(msg);
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DPRINT_EXIT(VMBUS);
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return ret;
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}
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/*++
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Name:
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GetChannelFromRelId()
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Description:
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Get the channel object given its child relative id (ie channel id)
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--*/
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/**
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* GetChannelFromRelId - Get the channel object given its child relative id (ie channel id)
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*/
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struct vmbus_channel *GetChannelFromRelId(u32 relId)
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{
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struct vmbus_channel *channel;
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struct vmbus_channel *foundChannel = NULL;
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LIST_ENTRY* anchor;
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LIST_ENTRY* curr;
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LIST_ENTRY *anchor;
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LIST_ENTRY *curr;
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unsigned long flags;
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spin_lock_irqsave(&gVmbusConnection.channel_lock, flags);
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ITERATE_LIST_ENTRIES(anchor, curr, &gVmbusConnection.ChannelList)
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{
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channel = CONTAINING_RECORD(curr, struct vmbus_channel, ListEntry);
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ITERATE_LIST_ENTRIES(anchor, curr, &gVmbusConnection.ChannelList) {
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channel = CONTAINING_RECORD(curr, struct vmbus_channel,
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ListEntry);
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if (channel->OfferMsg.ChildRelId == relId)
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{
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if (channel->OfferMsg.ChildRelId == relId) {
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foundChannel = channel;
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break;
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}
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@ -282,21 +242,10 @@ struct vmbus_channel *GetChannelFromRelId(u32 relId)
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return foundChannel;
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}
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/*++
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Name:
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VmbusProcessChannelEvent()
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Description:
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Process a channel event notification
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--*/
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static void
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VmbusProcessChannelEvent(
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void * context
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)
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/**
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* VmbusProcessChannelEvent - Process a channel event notification
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*/
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static void VmbusProcessChannelEvent(void *context)
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{
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struct vmbus_channel *channel;
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u32 relId = (u32)(unsigned long)context;
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@ -309,64 +258,48 @@ VmbusProcessChannelEvent(
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*/
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channel = GetChannelFromRelId(relId);
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if (channel)
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{
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if (channel) {
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VmbusChannelOnChannelEvent(channel);
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/* WorkQueueQueueWorkItem(channel->dataWorkQueue, VmbusChannelOnChannelEvent, (void*)channel); */
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}
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else
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{
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DPRINT_ERR(VMBUS, "channel not found for relid - %d.", relId);
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/*
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* WorkQueueQueueWorkItem(channel->dataWorkQueue,
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* VmbusChannelOnChannelEvent,
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* (void*)channel);
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*/
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} else {
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DPRINT_ERR(VMBUS, "channel not found for relid - %d.", relId);
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}
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}
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/*++
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Name:
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VmbusOnEvents()
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Description:
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Handler for events
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--*/
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/**
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* VmbusOnEvents - Handler for events
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*/
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void VmbusOnEvents(void)
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{
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int dword;
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/* int maxdword = PAGE_SIZE >> 3; // receive size is 1/2 page and divide that by 4 bytes */
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int maxdword = MAX_NUM_CHANNELS_SUPPORTED >> 5;
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int bit;
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int relid;
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u32* recvInterruptPage = gVmbusConnection.RecvInterruptPage;
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/* VMBUS_CHANNEL_MESSAGE* receiveMsg; */
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u32 *recvInterruptPage = gVmbusConnection.RecvInterruptPage;
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DPRINT_ENTER(VMBUS);
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/* Check events */
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if (recvInterruptPage)
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{
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for (dword = 0; dword < maxdword; dword++)
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{
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if (recvInterruptPage[dword])
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{
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for (bit = 0; bit < 32; bit++)
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{
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if (test_and_clear_bit(bit, (unsigned long *) &recvInterruptPage[dword]))
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{
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if (recvInterruptPage) {
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for (dword = 0; dword < maxdword; dword++) {
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if (recvInterruptPage[dword]) {
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for (bit = 0; bit < 32; bit++) {
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if (test_and_clear_bit(bit, (unsigned long *)&recvInterruptPage[dword])) {
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relid = (dword << 5) + bit;
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DPRINT_DBG(VMBUS, "event detected for relid - %d", relid);
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if (relid == 0) /* special case - vmbus channel protocol msg */
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{
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if (relid == 0) {
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/* special case - vmbus channel protocol msg */
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DPRINT_DBG(VMBUS, "invalid relid - %d", relid);
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continue; }
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else
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{
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continue;
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} else {
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/* QueueWorkItem(VmbusProcessEvent, (void*)relid); */
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/* ret = WorkQueueQueueWorkItem(gVmbusConnection.workQueue, VmbusProcessChannelEvent, (void*)relid); */
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VmbusProcessChannelEvent((void*)(unsigned long)relid);
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VmbusProcessChannelEvent((void *)(unsigned long)relid);
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}
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}
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}
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@ -378,50 +311,31 @@ void VmbusOnEvents(void)
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return;
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}
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/*++
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Name:
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VmbusPostMessage()
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Description:
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Send a msg on the vmbus's message connection
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--*/
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/**
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* VmbusPostMessage - Send a msg on the vmbus's message connection
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*/
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int VmbusPostMessage(void *buffer, size_t bufferLen)
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{
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int ret=0;
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union hv_connection_id connId;
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connId.Asu32 =0;
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connId.Asu32 = 0;
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connId.u.Id = VMBUS_MESSAGE_CONNECTION_ID;
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ret = HvPostMessage(
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connId,
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1,
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buffer,
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bufferLen);
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return ret;
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return HvPostMessage(connId, 1, buffer, bufferLen);
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}
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/*++
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Name:
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VmbusSetEvent()
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Description:
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Send an event notification to the parent
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--*/
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/**
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* VmbusSetEvent - Send an event notification to the parent
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*/
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int VmbusSetEvent(u32 childRelId)
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{
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int ret=0;
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int ret = 0;
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DPRINT_ENTER(VMBUS);
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/* Each u32 represents 32 channels */
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set_bit(childRelId & 31,
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(unsigned long *) gVmbusConnection.SendInterruptPage + (childRelId >> 5));
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(unsigned long *)gVmbusConnection.SendInterruptPage +
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(childRelId >> 5));
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ret = HvSignalEvent();
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@ -429,5 +343,3 @@ int VmbusSetEvent(u32 childRelId)
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return ret;
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}
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/* EOF */
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