Ip4Input.h

Go to the documentation of this file.

 
#ifndef __EFI_IP4_INPUT_H__
#define __EFI_IP4_INPUT_H__
 
#define IP4_MIN_HEADLEN  20
#define IP4_MAX_HEADLEN  60
#define IP4_MAX_IPSEC_HEADLEN  54
 
#define IP4_ASSEMLE_HASH_SIZE  31
#define IP4_FRAGMENT_LIFE      120
#define IP4_MAX_PACKET_SIZE    65535
 
typedef struct {
  UINTN         LinkFlag;
  INTN          CastType;
  INTN          Start;
  INTN          End;
  INTN          Length;
  UINT32        Life;
  EFI_STATUS    Status;
} IP4_CLIP_INFO;
 
typedef struct {
  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;
  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;
 
typedef struct {
  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 OUT 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  *IpSb,
  IN IP4_HEAD     *Head,
  IN NET_BUF      *Packet,
  IN UINT8        *Option,
  IN UINT32       OptionLen
  );
 
INTN
Ip4InterfaceEnquePacket (
  IN IP4_SERVICE    *IpSb,
  IN IP4_HEAD       *Head,
  IN NET_BUF        *Packet,
  IN UINT8          *Option,
  IN UINT32         OptionLen,
  IN IP4_INTERFACE  *IpIf
  );
 
EFI_STATUS
Ip4InstanceDeliverPacket (
  IN IP4_PROTOCOL  *IpInstance
  );
 
VOID
Ip4PacketTimerTicking (
  IN IP4_SERVICE  *IpSb
  );
 
EFI_STATUS
Ip4IpSecProcessPacket (
  IN     IP4_SERVICE            *IpSb,
  IN OUT IP4_HEAD               **Head,
  IN OUT NET_BUF                **Netbuf,
  IN OUT UINT8                  **Options,
  IN OUT UINT32                 *OptionsLen,
  IN     EFI_IPSEC_TRAFFIC_DIR  Direction,
  IN     VOID                   *Context
  );
 
#endif