[PATCH v2 4/9] NetworkPkg/TlsDxe: clean up byte order conversion for EfiTlsCipherList

[Laszlo Ersek <lersek@redhat.com>]

Fix the following style issues:

- "Data" is accessed through a pointer to UINT16 rather than to a pointer
  to EFI_TLS_CIPHER. While technically correct, UINT16 is harder to
  interpret against the UEFI spec.

- Array subscripting is written with weird *(Pointer + Offset)
  expressions, rather than with Pointer[Offset].

- The byte order is converted with HTONS(), while it should be NTOHS().
  Either way, use the Data1 and Data2 fields of EFI_TLS_CIPHER instead.

Cc: Jiaxin Wu <jiaxin.wu@intel.com>
Cc: Siyuan Fu <siyuan.fu@intel.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=915
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Fu Siyuan <siyuan.fu@intel.com>
---

Notes:
    v2:
    - pick up Siyuan's R-b

 NetworkPkg/TlsDxe/TlsProtocol.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/NetworkPkg/TlsDxe/TlsProtocol.c b/NetworkPkg/TlsDxe/TlsProtocol.c
index a5f95a098345..298ffdd659a2 100644
--- a/NetworkPkg/TlsDxe/TlsProtocol.c
+++ b/NetworkPkg/TlsDxe/TlsProtocol.c
@@ -57,12 +57,13 @@ TlsSetSessionData (
   IN     UINTN                         DataSize
   )
 {
   EFI_STATUS                Status;
   TLS_INSTANCE              *Instance;
   UINT16                    *CipherId;
+  CONST EFI_TLS_CIPHER      *TlsCipherList;
   UINTN                     CipherCount;
   UINTN                     Index;
 
   EFI_TPL                   OldTpl;
 
   Status = EFI_SUCCESS;
@@ -110,15 +111,17 @@ TlsSetSessionData (
     CipherId = AllocatePool (DataSize);
     if (CipherId == NULL) {
       Status = EFI_OUT_OF_RESOURCES;
       goto ON_EXIT;
     }
 
+    TlsCipherList = (CONST EFI_TLS_CIPHER *) Data;
     CipherCount = DataSize / sizeof (EFI_TLS_CIPHER);
     for (Index = 0; Index < CipherCount; Index++) {
-      *(CipherId +Index) = HTONS (*(((UINT16 *) Data) + Index));
+      CipherId[Index] = ((TlsCipherList[Index].Data1 << 8) |
+                         TlsCipherList[Index].Data2);
     }
 
     Status = TlsSetCipherList (Instance->TlsConn, CipherId, CipherCount);
 
     FreePool (CipherId);
     break;
-- 
2.14.1.3.gb7cf6e02401b