NetworkPkg: Update IP4 stack drivers for classless address unicast check.

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

diff --git a/NetworkPkg/UefiPxeBcDxe/PxeBcSupport.c b/NetworkPkg/UefiPxeBcDxe/PxeBcSupport.c
index 3ea95185745291594ba1cb7f297ecd1ceb471ff4..00c652dae5be445747f1b93be9da89b8ee2ce74f 100644 (file)
--- a/NetworkPkg/UefiPxeBcDxe/PxeBcSupport.c
+++ b/NetworkPkg/UefiPxeBcDxe/PxeBcSupport.c
@@ -258,7 +258,9 @@ PxeBcIcmpErrorDpcHandle (
   }\r
 \r
   if (EFI_IP4 (RxData->Header->SourceAddress) != 0 &&\r
-      !NetIp4IsUnicast (EFI_NTOHL (RxData->Header->SourceAddress), 0)) {\r
+      (NTOHL (Mode->SubnetMask.Addr[0]) != 0) &&\r
+      IP4_NET_EQUAL (NTOHL(Mode->StationIp.Addr[0]), EFI_NTOHL (RxData->Header->SourceAddress), NTOHL (Mode->SubnetMask.Addr[0])) &&\r
+      !NetIp4IsUnicast (EFI_NTOHL (RxData->Header->SourceAddress), NTOHL (Mode->SubnetMask.Addr[0]))) {\r
     //\r
     // The source address of the received packet should be a valid unicast address.\r
     //\r