MdeModulePkg/Network: Add 32bit subnet mask support for IP4 PXE boot.

[mirror_edk2.git] / MdeModulePkg / Universal / Network / Ip4Dxe / Ip4Impl.c

diff --git a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Impl.c b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Impl.c
index 6a26143e307d3e4effe40bc1f190fb0833afd3d0..7c27db6753d0fdaf966d3aaff1a947a7131b070c 100644 (file)
--- a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Impl.c
+++ b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Impl.c
@@ -1259,7 +1259,7 @@ EfiIp4Routes (
   // the gateway address must be a unicast on the connected network if not zero.\r
   //\r
   if ((Nexthop != IP4_ALLZERO_ADDRESS) &&\r
-      (!IP4_NET_EQUAL (Nexthop, IpIf->Ip, IpIf->SubnetMask) ||\r
+      ((IpIf->SubnetMask != IP4_ALLONE_ADDRESS && !IP4_NET_EQUAL (Nexthop, IpIf->Ip, IpIf->SubnetMask)) ||\r
         IP4_IS_BROADCAST (Ip4GetNetCast (Nexthop, IpIf)))) {\r
 \r
     Status = EFI_INVALID_PARAMETER;\r