1. Fix a bug in PXE driver that the PXE boot do not restart if a new boot option...

[mirror_edk2.git] / NetworkPkg / UefiPxeBcDxe / PxeBcImpl.c

diff --git a/NetworkPkg/UefiPxeBcDxe/PxeBcImpl.c b/NetworkPkg/UefiPxeBcDxe/PxeBcImpl.c
index 5f693729d612d2fa274261c2aadf6f0f8b8518e3..183dc0ced743de24aa6857b4b4b40259b19bc8fd 100644 (file)
--- a/NetworkPkg/UefiPxeBcDxe/PxeBcImpl.c
+++ b/NetworkPkg/UefiPxeBcDxe/PxeBcImpl.c
@@ -2348,6 +2348,15 @@ EfiPxeLoadFile (
   // Start Pxe Base Code to initialize PXE boot.\r
   //\r
   Status = PxeBc->Start (PxeBc, UsingIpv6);\r
+  if (Status == EFI_ALREADY_STARTED && UsingIpv6 != PxeBc->Mode->UsingIpv6) {\r
+    //\r
+    // PxeBc protocol has already been started but not on the required IP version, restart it.\r
+    //\r
+    Status = PxeBc->Stop (PxeBc);\r
+    if (!EFI_ERROR (Status)) {\r
+      Status = PxeBc->Start (PxeBc, UsingIpv6);\r
+    }\r
+  }\r
   if (Status == EFI_SUCCESS || Status == EFI_ALREADY_STARTED) {\r
     Status = PxeBcLoadBootFile (Private, BufferSize, Buffer);\r
   }\r