On 4 June 2015 at 10:03, jiaxinwu <jiaxin...@intel.com> wrote:
> Contributed-under: TianoCore Contribution Agreement 1.0
> Signed-off-by: Wu Jiaxin <jiaxin...@intel.com>
> Signed-off-by: jiaxinwu <jiaxin...@intel.com>

This patch is breaking the GCC build on ARM. Please see below.

Also, the patch in the repository has a different title and some
Reviewed-by's that I cannot find on the mailing list.

> ---
>  .../Universal/Network/Dhcp4Dxe/Dhcp4Impl.c         | 33 
> +++++++++++++++-------
>  1 file changed, 23 insertions(+), 10 deletions(-)


@@ -1571,13 +1582,15 @@ EfiDhcp4TransmitReceive (
   }

   //
   // Get the gateway.
   //
-  SubnetMask = DhcpSb->Netmask;
+  Class           = NetGetIpClass (ClientAddr);
+  ASSERT (Class < IP4_ADDR_CLASSE);
+  SubnetMask = gIp4AllMasks[Class << 3];
   ZeroMem (&Gateway, sizeof (Gateway));
-  if (!IP4_NET_EQUAL (DhcpSb->ClientAddr,
EndPoint.RemoteAddr.Addr[0], SubnetMask)) {
+  if (!IP4_NET_EQUAL (ClientAddr, EndPoint.RemoteAddr.Addr[0], SubnetMask)) {
     CopyMem (&Gateway.v4, &Token->GatewayAddress, sizeof (EFI_IPv4_ADDRESS));
     Gateway.Addr[0] = NTOHL (Gateway.Addr[0]);
   }

   //
edk2-devel@lists.sourceforge.net (lists.sourceforge.net)
>
> diff --git a/MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Impl.c 
> b/MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Impl.c
> index 41b5e95..f2e6d28 100644
> --- a/MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Impl.c
> +++ b/MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Impl.c
> @@ -1,9 +1,9 @@
>  /** @file
>    This file implement the EFI_DHCP4_PROTOCOL interface.
>
> -Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
> +Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>
>  This program and the accompanying materials
>  are licensed and made available under the terms and conditions of the BSD 
> License
>  which accompanies this distribution.  The full text of the license may be 
> found at
>  http://opensource.org/licenses/bsd-license.php
>
> @@ -1189,11 +1189,14 @@ Dhcp4InstanceConfigUdpIo (
>  {
>    DHCP_PROTOCOL                     *Instance;
>    DHCP_SERVICE                      *DhcpSb;
>    EFI_DHCP4_TRANSMIT_RECEIVE_TOKEN  *Token;
>    EFI_UDP4_CONFIG_DATA              UdpConfigData;
> -  IP4_ADDR                          Ip;
> +  IP4_ADDR                          ClientAddr;
> +  IP4_ADDR                          Ip;
> +  INTN                              Class;
> +  IP4_ADDR                          SubnetMask;
>
>    Instance = (DHCP_PROTOCOL *) Context;
>    DhcpSb   = Instance->Service;

DhcpSb is never used so it should be removed.

>    Token    = Instance->Token;
>
> @@ -1202,14 +1205,18 @@ Dhcp4InstanceConfigUdpIo (
>    UdpConfigData.AcceptBroadcast    = TRUE;
>    UdpConfigData.AllowDuplicatePort = TRUE;
>    UdpConfigData.TimeToLive         = 64;
>    UdpConfigData.DoNotFragment      = TRUE;
>
> -  Ip = HTONL (DhcpSb->ClientAddr);
> +  ClientAddr = EFI_NTOHL (Token->Packet->Dhcp4.Header.ClientAddr);
> +  Ip = HTONL (ClientAddr);
>    CopyMem (&UdpConfigData.StationAddress, &Ip, sizeof (EFI_IPv4_ADDRESS));
> -
> -  Ip = HTONL (DhcpSb->Netmask);
> +
> +  Class      = NetGetIpClass (ClientAddr);
> +  ASSERT (Class < IP4_ADDR_CLASSE);
> +  SubnetMask = gIp4AllMasks[Class << 3];
> +  Ip = HTONL (SubnetMask);
>    CopyMem (&UdpConfigData.SubnetMask, &Ip, sizeof (EFI_IPv4_ADDRESS));
>
>    if ((Token->ListenPointCount == 0) || (Token->ListenPoints[0].ListenPort 
> == 0)) {
>      UdpConfigData.StationPort = DHCP_CLIENT_PORT;
>    } else {
> @@ -1355,11 +1362,11 @@ PxeDhcpInput (
>    //
>    // Is this packet the answer to our packet?
>    //
>    if ((Head->OpCode != BOOTP_REPLY) ||
>        (Head->Xid != Token->Packet->Dhcp4.Header.Xid) ||
> -      (CompareMem (DhcpSb->ClientAddressSendOut, Head->ClientHwAddr, 
> Head->HwAddrLen) != 0)) {

Same here: since you dropped the DhcpSb, you should remove the
variable entirely.

> +      (CompareMem (&Token->Packet->Dhcp4.Header.ClientHwAddr[0], 
> Head->ClientHwAddr, Head->HwAddrLen) != 0)) {
>      goto RESTART;
>    }
>
>    //
>    // Validate the options and retrieve the interested options
> @@ -1479,18 +1486,21 @@ EfiDhcp4TransmitReceive (
>    NET_BUF        *Wrap;
>    UDP_END_POINT  EndPoint;
>    IP4_ADDR       Ip;
>    DHCP_SERVICE   *DhcpSb;
>    EFI_IP_ADDRESS Gateway;
> +  IP4_ADDR       ClientAddr;
> +  INTN           Class;
>    IP4_ADDR       SubnetMask;
>
>    if ((This == NULL) || (Token == NULL) || (Token->Packet == NULL)) {
>      return EFI_INVALID_PARAMETER;
>    }
>
>    Instance = DHCP_INSTANCE_FROM_THIS (This);
>    DhcpSb   = Instance->Service;
> +  DhcpSb->ActiveChild = Instance;
>
>    if (Instance->Token != NULL) {
>      //
>      // The previous call to TransmitReceive is not finished.
>      //
> @@ -1510,12 +1520,13 @@ EfiDhcp4TransmitReceive (
>      // RemoteAddress is zero.
>      //
>      return EFI_INVALID_PARAMETER;
>    }
>
> -  if (DhcpSb->ClientAddr == 0) {
> -
> +  ClientAddr = EFI_NTOHL (Token->Packet->Dhcp4.Header.ClientAddr);
> +
> +  if (ClientAddr == 0) {
>      return EFI_NO_MAPPING;
>    }
>
>    OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
>
> @@ -1571,13 +1582,15 @@ EfiDhcp4TransmitReceive (
>    }
>
>    //
>    // Get the gateway.
>    //
> -  SubnetMask = DhcpSb->Netmask;
> +  Class           = NetGetIpClass (ClientAddr);
> +  ASSERT (Class < IP4_ADDR_CLASSE);
> +  SubnetMask = gIp4AllMasks[Class << 3];
>    ZeroMem (&Gateway, sizeof (Gateway));
> -  if (!IP4_NET_EQUAL (DhcpSb->ClientAddr, EndPoint.RemoteAddr.Addr[0], 
> SubnetMask)) {
> +  if (!IP4_NET_EQUAL (ClientAddr, EndPoint.RemoteAddr.Addr[0], SubnetMask)) {
>      CopyMem (&Gateway.v4, &Token->GatewayAddress, sizeof (EFI_IPv4_ADDRESS));
>      Gateway.Addr[0] = NTOHL (Gateway.Addr[0]);
>    }
>
>    //
> --
> 1.9.5.msysgit.1
>
>
>
> ------------------------------------------------------------------------------
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> edk2-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/edk2-devel

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