From: Wu Jiaxin <jiaxin.wu@intel.com>
Date: Fri, 25 Oct 2013 08:07:26 +0000 (+0000)
Subject: Fix a bug about the iSCSI DHCP dependency issue.
X-Git-Tag: edk2-stable201903~12154
X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=commitdiff_plain;h=b7cc5bf180e9deefc91a5e66e0b80fd222503608;hp=05a300115ab80963e2a722aaaa8adbb3b6c5007c

Fix a bug about the iSCSI DHCP dependency issue.
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@14803 6f19259b-4bc3-4df7-8a09-765794883524
---

diff --git a/NetworkPkg/IScsiDxe/IScsiDriver.c b/NetworkPkg/IScsiDxe/IScsiDriver.c
index cc452e7110..6d6f9a13ed 100644
--- a/NetworkPkg/IScsiDxe/IScsiDriver.c
+++ b/NetworkPkg/IScsiDxe/IScsiDriver.c
@@ -112,13 +112,16 @@ IScsiSupported (
   EFI_STATUS                Status;
   EFI_GUID                  *IScsiServiceBindingGuid;
   EFI_GUID                  *TcpServiceBindingGuid;
+  EFI_GUID                  *DhcpServiceBindingGuid;
 
   if (IpVersion == IP_VERSION_4) {
     IScsiServiceBindingGuid  = &gIScsiV4PrivateGuid;
     TcpServiceBindingGuid    = &gEfiTcp4ServiceBindingProtocolGuid;
+    DhcpServiceBindingGuid   = &gEfiDhcp4ServiceBindingProtocolGuid;
   } else {
     IScsiServiceBindingGuid  = &gIScsiV6PrivateGuid;
     TcpServiceBindingGuid    = &gEfiTcp6ServiceBindingProtocolGuid;
+    DhcpServiceBindingGuid   = &gEfiDhcp6ServiceBindingProtocolGuid;
   }
 
   Status = gBS->OpenProtocol (
@@ -131,24 +134,40 @@ IScsiSupported (
                   );
   if (!EFI_ERROR (Status)) {
     return EFI_ALREADY_STARTED;
-  } else {
+  }
+
+  Status = gBS->OpenProtocol (
+                  ControllerHandle,
+                  TcpServiceBindingGuid,
+                  NULL,
+                  This->DriverBindingHandle,
+                  ControllerHandle,
+                  EFI_OPEN_PROTOCOL_TEST_PROTOCOL
+                  );
+  if (EFI_ERROR (Status)) {
+    return EFI_UNSUPPORTED;
+  }
+
+  Status = IScsiIsDevicePathSupported (RemainingDevicePath);
+  if (EFI_ERROR (Status)) {
+    return EFI_UNSUPPORTED;
+  }
+
+  if (IScsiDhcpIsConfigured (ControllerHandle, IpVersion)) {
     Status = gBS->OpenProtocol (
                     ControllerHandle,
-                    TcpServiceBindingGuid,
+                    DhcpServiceBindingGuid,
                     NULL,
                     This->DriverBindingHandle,
                     ControllerHandle,
                     EFI_OPEN_PROTOCOL_TEST_PROTOCOL
                     );
-    if (!EFI_ERROR (Status)) {
-      Status = IScsiIsDevicePathSupported (RemainingDevicePath);
-      if (!EFI_ERROR (Status)) {
-        return EFI_SUCCESS;
-      }
+    if (EFI_ERROR (Status)) {
+      return EFI_UNSUPPORTED;
     }
   }
-
-  return EFI_UNSUPPORTED;
+  
+  return EFI_SUCCESS;
 }
 
 
diff --git a/NetworkPkg/IScsiDxe/IScsiMisc.c b/NetworkPkg/IScsiDxe/IScsiMisc.c
index 971011eac5..1079c187fa 100644
--- a/NetworkPkg/IScsiDxe/IScsiMisc.c
+++ b/NetworkPkg/IScsiDxe/IScsiMisc.c
@@ -1,7 +1,7 @@
 /** @file
   Miscellaneous routines for iSCSI driver.
 
-Copyright (c) 2004 - 2012, 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
@@ -890,6 +890,99 @@ IScsiCleanDriverData (
   FreePool (Private);
 }
 
+/**
+  Check wheather the Controller handle is configured to use DHCP protocol.
+
+  @param[in]  Controller           The handle of the controller.
+  @param[in]  IpVersion            IP_VERSION_4 or IP_VERSION_6.
+  
+  @retval TRUE                     The handle of the controller need the Dhcp protocol.
+  @retval FALSE                    The handle of the controller does not need the Dhcp protocol.
+  
+**/
+BOOLEAN
+IScsiDhcpIsConfigured (
+  IN EFI_HANDLE  Controller,
+  IN UINT8       IpVersion
+  )
+{
+  ISCSI_ATTEMPT_CONFIG_NVDATA *AttemptTmp;
+  UINT8                       *AttemptConfigOrder;
+  UINTN                       AttemptConfigOrderSize;
+  UINTN                       Index;
+  EFI_STATUS                  Status;
+  EFI_MAC_ADDRESS             MacAddr;
+  UINTN                       HwAddressSize;
+  UINT16                      VlanId;
+  CHAR16                      MacString[ISCSI_MAX_MAC_STRING_LEN];
+  CHAR16                      AttemptName[ISCSI_NAME_IFR_MAX_SIZE];
+  
+  AttemptConfigOrder = IScsiGetVariableAndSize (
+                         L"AttemptOrder",
+                         &gIScsiConfigGuid,
+                         &AttemptConfigOrderSize
+                         );
+  if (AttemptConfigOrder == NULL || AttemptConfigOrderSize == 0) {
+    return FALSE;
+  }
+  
+  //
+  // Get MAC address of this network device.
+  //
+  Status = NetLibGetMacAddress (Controller, &MacAddr, &HwAddressSize);
+  if(EFI_ERROR (Status)) {
+    return FALSE;
+  }
+  //
+  // Get VLAN ID of this network device.
+  //
+  VlanId = NetLibGetVlanId (Controller);
+  IScsiMacAddrToStr (&MacAddr, (UINT32) HwAddressSize, VlanId, MacString);
+  
+  for (Index = 0; Index < AttemptConfigOrderSize / sizeof (UINT8); Index++) {
+    UnicodeSPrint (
+      AttemptName,
+      (UINTN) 128,
+      L"%s%d",
+      MacString,
+      (UINTN) AttemptConfigOrder[Index]
+      );
+    Status = GetVariable2 (
+               AttemptName,
+               &gEfiIScsiInitiatorNameProtocolGuid,
+               (VOID**)&AttemptTmp,
+               NULL
+               );
+    if(EFI_ERROR (Status)) {
+      continue;
+    }
+    ASSERT (AttemptConfigOrder[Index] == AttemptTmp->AttemptConfigIndex);
+
+    if (AttemptTmp->SessionConfigData.Enabled == ISCSI_DISABLED) {
+      FreePool (AttemptTmp);
+      continue;
+    }
+
+    if (AttemptTmp->SessionConfigData.IpMode != IP_MODE_AUTOCONFIG && 
+        AttemptTmp->SessionConfigData.IpMode != ((IpVersion == IP_VERSION_4) ? IP_MODE_IP4 : IP_MODE_IP6)) {
+      FreePool (AttemptTmp);
+      continue;
+    }
+    
+    if(AttemptTmp->SessionConfigData.IpMode == IP_MODE_AUTOCONFIG ||
+       AttemptTmp->SessionConfigData.InitiatorInfoFromDhcp == TRUE ||
+       AttemptTmp->SessionConfigData.TargetInfoFromDhcp == TRUE) { 
+      FreePool (AttemptTmp);
+      FreePool (AttemptConfigOrder);
+      return TRUE;
+    }
+
+    FreePool (AttemptTmp);
+  }
+  
+  FreePool (AttemptConfigOrder);
+  return FALSE;
+}
 
 /**
   Get the various configuration data.
diff --git a/NetworkPkg/IScsiDxe/IScsiMisc.h b/NetworkPkg/IScsiDxe/IScsiMisc.h
index c9ff96da6c..e2a27806ac 100644
--- a/NetworkPkg/IScsiDxe/IScsiMisc.h
+++ b/NetworkPkg/IScsiDxe/IScsiMisc.h
@@ -1,7 +1,7 @@
 /** @file
   Miscellaneous definitions for iSCSI driver.
 
-Copyright (c) 2004 - 2012, 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
@@ -298,6 +298,22 @@ IScsiCleanDriverData (
   IN ISCSI_DRIVER_DATA  *Private
   );
 
+/**
+  Check wheather the Controller handle is configured to use DHCP protocol.
+
+  @param[in]  Controller           The handle of the controller.
+  @param[in]  IpVersion            IP_VERSION_4 or IP_VERSION_6.
+  
+  @retval TRUE                     The handle of the controller need the Dhcp protocol.
+  @retval FALSE                    The handle of the controller does not need the Dhcp protocol.
+  
+**/
+BOOLEAN
+IScsiDhcpIsConfigured (
+  IN EFI_HANDLE  Controller,
+  IN UINT8       IpVersion
+  );
+
 /**
   Get the various configuration data of this iSCSI instance.