Import ArpDxe, Dhcp4Dxe, Ip4Dxe, Mtftp4Dxe, PxeBcDxe and PxeDhcp4Dxe.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3492 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Input.h

@@ -0,0 +1,138 @@
+/** @file
+
+Copyright (c) 2005 - 2006, Intel Corporation
+All rights reserved. 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
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+Module Name:
+
+  Ip4Input.h
+
+Abstract:
+
+
+**/
+
+#ifndef __EFI_IP4_INPUT_H__
+#define __EFI_IP4_INPUT_H__
+
+enum {
+  IP4_MIN_HEADLEN       = 20,
+  IP4_MAX_HEADLEN       = 60,
+
+  IP4_ASSEMLE_HASH_SIZE = 31,
+  IP4_FRAGMENT_LIFE     = 120,
+  IP4_MAX_PACKET_SIZE   = 65535,
+};
+
+//
+// Per packet information for input process. LinkFlag specifies whether
+// the packet is received as Link layer unicast, multicast or broadcast.
+// The CastType is the IP layer cast type, such as IP multicast or unicast.
+// Start, End and Length are staffs used to assemble the packets. Start
+// is the sequence number of the first byte of data in the packet. Length
+// is the number of bytes of data. End = Start + Length, that is, the
+// sequence number of last byte + 1. Each assembled packet has a count down
+// life. If it isn't consumed before Life reaches zero, the packet is released.
+//
+typedef struct {
+  UINTN                     LinkFlag;
+  INTN                      CastType;
+  INTN                      Start;
+  INTN                      End;
+  INTN                      Length;
+  UINT32                    Life;
+  EFI_STATUS                Status;
+} IP4_CLIP_INFO;
+
+//
+// Structure used to assemble IP packets.
+//
+typedef struct {
+  NET_LIST_ENTRY            Link;
+
+  //
+  // Identity of one IP4 packet. Each fragment of a packet has
+  // the same (Dst, Src, Id, Protocol).
+  //
+  IP4_ADDR                  Dst;
+  IP4_ADDR                  Src;
+  UINT16                    Id;
+  UINT8                     Protocol;
+
+  INTN                      TotalLen;
+  INTN                      CurLen;
+  NET_LIST_ENTRY            Fragments;  // List of all the fragments of this packet
+
+  IP4_HEAD                  *Head;      // IP head of the first fragment
+  IP4_CLIP_INFO             *Info;      // Per packet info of the first fragment
+  INTN                      Life;       // Count down life for the packet.
+} IP4_ASSEMBLE_ENTRY;
+
+//
+// Each Ip service instance has an assemble table to reassemble
+// the packets before delivery to its children. It is organized
+// as hash table.
+//
+typedef struct {
+  NET_LIST_ENTRY  Bucket[IP4_ASSEMLE_HASH_SIZE];
+} IP4_ASSEMBLE_TABLE;
+
+#define IP4_GET_CLIP_INFO(Packet) ((IP4_CLIP_INFO *) ((Packet)->ProtoData))
+
+#define IP4_ASSEMBLE_HASH(Dst, Src, Id, Proto)  \
+          (((Dst) + (Src) + ((Id) << 16) + (Proto)) % IP4_ASSEMLE_HASH_SIZE)
+
+#define IP4_RXDATA_WRAP_SIZE(NumFrag) \
+          (sizeof (IP4_RXDATA_WRAP) + sizeof (EFI_IP4_FRAGMENT_DATA) * ((NumFrag) - 1))
+
+VOID
+Ip4InitAssembleTable (
+  IN IP4_ASSEMBLE_TABLE     *Table
+  );
+
+VOID
+Ip4CleanAssembleTable (
+  IN IP4_ASSEMBLE_TABLE     *Table
+  );
+
+VOID
+Ip4AccpetFrame (
+  IN IP4_PROTOCOL           *Ip4Instance,
+  IN NET_BUF                *Packet,
+  IN EFI_STATUS             IoStatus,
+  IN UINT32                 Flag,
+  IN VOID                   *Context
+  );
+
+EFI_STATUS
+Ip4Demultiplex (
+  IN IP4_SERVICE            *SbInstance,
+  IN IP4_HEAD               *Head,
+  IN NET_BUF                *Packet
+  );
+
+INTN
+Ip4InterfaceEnquePacket (
+  IN IP4_SERVICE            *SbInstance,
+  IN IP4_HEAD               *Head,
+  IN NET_BUF                *Packet,
+  IN IP4_INTERFACE          *Interface
+  );
+
+EFI_STATUS
+Ip4InstanceDeliverPacket (
+  IN IP4_PROTOCOL           *Ip4Instance
+  );
+
+VOID
+Ip4PacketTimerTicking (
+  IN IP4_SERVICE            *IpSb
+  );
+
+#endif