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Fix a bug about the iSCSI DHCP dependency issue.

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Create rules to determine whether iSCSI need DHCP protocol in current configuration by examining user’s configuration data in DriverBindingSupported().

Signed-off-by: Wu Jiaxin <jiaxin.wu@intel.com >
Reviewed-by: Ye Ting <ting.ye@intel.com>
Reviewed-by: Fu Siyuan <siyuan.fu@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14802 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Wu Jiaxin
2013-10-25 08:05:47 +00:00
committed by jiaxinwu
parent 9551b02721
commit 05a300115a
3 changed files with 126 additions and 15 deletions
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69
MdeModulePkg/Universal/Network/IScsiDxe/IScsiDriver.c
View File

@@ -1,7 +1,7 @@
/** @file
The entry point of IScsi driver.
Copyright (c) 2004 - 2011, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2004 - 2013, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@@ -23,6 +23,44 @@ EFI_DRIVER_BINDING_PROTOCOL gIScsiDriverBinding = {
NULL
};
/**
Tests to see if this driver supports the RemainingDevicePath.
@param[in] RemainingDevicePath A pointer to the remaining portion of a device path. This
parameter is ignored by device drivers, and is optional for bus
drivers. For bus drivers, if this parameter is not NULL, then
the bus driver must determine if the bus controller specified
by ControllerHandle and the child controller specified
by RemainingDevicePath are both supported by this
bus driver.
@retval EFI_SUCCESS The RemainingDevicePath is supported or NULL.
@retval EFI_UNSUPPORTED The device specified by ControllerHandle and
RemainingDevicePath is not supported by the driver specified by This.
**/
EFI_STATUS
IScsiIsDevicePathSupported (
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
)
{
EFI_DEVICE_PATH_PROTOCOL *CurrentDevicePath;
CurrentDevicePath = RemainingDevicePath;
if (CurrentDevicePath != NULL) {
while (!IsDevicePathEnd (CurrentDevicePath)) {
if ((CurrentDevicePath->Type == MESSAGING_DEVICE_PATH) && (CurrentDevicePath->SubType == MSG_ISCSI_DP)) {
return EFI_SUCCESS;
}
CurrentDevicePath = NextDevicePathNode (CurrentDevicePath);
}
return EFI_UNSUPPORTED;
}
return EFI_SUCCESS;
}
/**
Tests to see if this driver supports a given controller. If a child device is provided,
it further tests to see if this driver supports creating a handle for the specified child device.
@@ -56,7 +94,6 @@ IScsiDriverBindingSupported (
)
{
EFI_STATUS Status;
EFI_DEVICE_PATH_PROTOCOL *CurrentDevicePath;
Status = gBS->OpenProtocol (
ControllerHandle,
@@ -82,19 +119,25 @@ IScsiDriverBindingSupported (
return EFI_UNSUPPORTED;
}
CurrentDevicePath = RemainingDevicePath;
if (CurrentDevicePath != NULL) {
while (!IsDevicePathEnd (CurrentDevicePath)) {
if ((CurrentDevicePath->Type == MESSAGING_DEVICE_PATH) && (CurrentDevicePath->SubType == MSG_ISCSI_DP)) {
return EFI_SUCCESS;
}
CurrentDevicePath = NextDevicePathNode (CurrentDevicePath);
}
Status = IScsiIsDevicePathSupported (RemainingDevicePath);
if (EFI_ERROR (Status)) {
return EFI_UNSUPPORTED;
}
if (IScsiDhcpIsConfigured (ControllerHandle)) {
Status = gBS->OpenProtocol (
ControllerHandle,
&gEfiDhcp4ServiceBindingProtocolGuid,
NULL,
This->DriverBindingHandle,
ControllerHandle,
EFI_OPEN_PROTOCOL_TEST_PROTOCOL
);
if (EFI_ERROR (Status)) {
return EFI_UNSUPPORTED;
}
}
return EFI_SUCCESS;
}
@@ -170,7 +213,7 @@ IScsiDriverBindingStart (
goto ON_ERROR;
}
//
//
// Always install private protocol no matter what happens later. We need to
// keep the relationship between ControllerHandle and ChildHandle.
//