X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=StdLib%2FEfiSocketLib%2FTcp4.c;h=34e60e2a7f7a951a3b4ee02a084e2f7af9f74938;hb=6e1450f3095c90cf7119a4dbc8e6710daf988444;hp=e7924fa429bc713d3dd7ff7c85903bf20941bd99;hpb=44538ba5aa759c4039fc6c588d33a7fe03503c3f;p=mirror_edk2.git

diff --git a/StdLib/EfiSocketLib/Tcp4.c b/StdLib/EfiSocketLib/Tcp4.c
index e7924fa429..34e60e2a7f 100644
--- a/StdLib/EfiSocketLib/Tcp4.c
+++ b/StdLib/EfiSocketLib/Tcp4.c
@@ -790,6 +790,8 @@ EslTcp4Listen (
     //  Mark the socket as configured
     //
     pSocket->bConfigured = TRUE;
+    Status = EFI_SUCCESS;
+    pSocket->errno = 0;
 
     //
     //  All done
@@ -1155,9 +1157,9 @@ EslTcp4LocalAddressSet (
     }
     else {
       pAccessPoint->SubnetMask.Addr[0] = 0xff;
-      pAccessPoint->SubnetMask.Addr[1] = 0xff;
-      pAccessPoint->SubnetMask.Addr[2] = 0xff;
-      pAccessPoint->SubnetMask.Addr[3] = 0xff;
+      pAccessPoint->SubnetMask.Addr[1] = ( 128 <= pAccessPoint->StationAddress.Addr[0]) ? 0xff : 0;
+      pAccessPoint->SubnetMask.Addr[2] = ( 192 <= pAccessPoint->StationAddress.Addr[0]) ? 0xff : 0;
+      pAccessPoint->SubnetMask.Addr[3] = ( 224 <= pAccessPoint->StationAddress.Addr[0]) ? 0xff : 0;
     }
 
     //