OvmfPkg/VirtioNetDxe: add Tx packet map/unmap helper functions

[mirror_edk2.git] / OvmfPkg / VirtioNetDxe / SnpInitialize.c

diff --git a/OvmfPkg/VirtioNetDxe/SnpInitialize.c b/OvmfPkg/VirtioNetDxe/SnpInitialize.c
index 9621f936d2cba243a9e4aad8ad18299ba999d937..ffb3deefe00c2518a5a028d00420fe11d4aff23b 100644 (file)
--- a/OvmfPkg/VirtioNetDxe/SnpInitialize.c
+++ b/OvmfPkg/VirtioNetDxe/SnpInitialize.c
@@ -147,7 +147,8 @@ ReleaseQueue:
                            EfiSimpleNetworkInitialized state.\r
 \r
   @retval EFI_OUT_OF_RESOURCES  Failed to allocate the stack to track the heads\r
-                                of free descriptor chains.\r
+                                of free descriptor chains or failed to init\r
+                                TxBufCollection.\r
   @return                       Status codes from VIRTIO_DEVICE_PROTOCOL.\r
                                 AllocateSharedPages() or\r
                                 VirtioMapAllBytesInSharedBuffer()\r
@@ -176,6 +177,15 @@ VirtioNetInitTx (
     return EFI_OUT_OF_RESOURCES;\r
   }\r
 \r
+  Dev->TxBufCollection = OrderedCollectionInit (\r
+                           VirtioNetTxBufMapInfoCompare,\r
+                           VirtioNetTxBufDeviceAddressCompare\r
+                           );\r
+  if (Dev->TxBufCollection == NULL) {\r
+    Status = EFI_OUT_OF_RESOURCES;\r
+    goto FreeTxFreeStack;\r
+  }\r
+\r
   //\r
   // Allocate TxSharedReq header and map with BusMasterCommonBuffer so that it\r
   // can be accessed equally by both processor and device.\r
@@ -186,7 +196,7 @@ VirtioNetInitTx (
                           &TxSharedReqBuffer\r
                           );\r
   if (EFI_ERROR (Status)) {\r
-    goto FreeTxFreeStack;\r
+    goto UninitTxBufCollection;\r
   }\r
 \r
   ZeroMem (TxSharedReqBuffer, sizeof *Dev->TxSharedReq);\r
@@ -267,6 +277,10 @@ FreeTxSharedReqBuffer:
                  EFI_SIZE_TO_PAGES (sizeof *(Dev->TxSharedReq)),\r
                  TxSharedReqBuffer\r
                  );\r
+\r
+UninitTxBufCollection:\r
+  OrderedCollectionUninit (Dev->TxBufCollection);\r
+\r
 FreeTxFreeStack:\r
   FreePool (Dev->TxFreeStack);\r
 \r