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audk/MdeModulePkg/Universal/Network/Tcp4Dxe/Socket.h

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/** @file
Copyright (c) 2005 - 2006, Intel Corporation<BR>
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<BR>
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#ifndef _SOCKET_H_
#define _SOCKET_H_
#include <Uefi.h>
#include <Protocol/Ip4.h>
#include <Protocol/Tcp4.h>
#include <Protocol/Udp4.h>
#include <Library/NetLib.h>
#include <Library/DebugLib.h>
#include <Library/UefiRuntimeServicesTableLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiLib.h>
#define SOCK_SND_BUF 0
#define SOCK_RCV_BUF 1
#define SOCK_BUFF_LOW_WATER (2 * 1024)
#define SOCK_RCV_BUFF_SIZE (8 * 1024)
#define SOCK_SND_BUFF_SIZE (8 * 1024)
#define SOCK_BACKLOG 5
#define PROTO_RESERVED_LEN 20
#define SO_NO_MORE_DATA 0x0001
//
//
//
// When a socket is created it enters into SO_UNCONFIGURED,
// no actions can be taken on this socket, only after calling
// SockConfigure. The state transition diagram of socket is
// as following:
//
// SO_UNCONFIGURED --- SO_CONFIGURED --- SO_CONNECTING
// ^ | |
// | ---> SO_LISTENING |
// | |
// |------------------SO_DISCONNECTING<-- SO_CONNECTED
//
// A passive socket can only go into SO_LISTENING and
// SO_UNCONFIGURED state. SO_XXXING state is a middle state
// when a socket is undergoing a protocol procedure such
// as requesting a TCP connection.
//
//
//
///
/// Socket state
///
typedef enum {
SO_CLOSED = 0,
SO_LISTENING,
SO_CONNECTING,
SO_CONNECTED,
SO_DISCONNECTING
} SOCK_STATE;
///
/// Socket configure state
///
typedef enum {
SO_UNCONFIGURED = 0,
SO_CONFIGURED_ACTIVE,
SO_CONFIGURED_PASSIVE,
SO_NO_MAPPING
} SOCK_CONFIGURE_STATE;
#define SOCK_NO_MORE_DATA(Sock) ((Sock)->Flag |= SO_NO_MORE_DATA)
#define SOCK_IS_UNCONFIGURED(Sock) ((Sock)->ConfigureState == SO_UNCONFIGURED)
#define SOCK_IS_CONFIGURED(Sock) \
(((Sock)->ConfigureState == SO_CONFIGURED_ACTIVE) || \
((Sock)->ConfigureState == SO_CONFIGURED_PASSIVE))
#define SOCK_IS_CONFIGURED_ACTIVE(Sock) \
((Sock)->ConfigureState == SO_CONFIGURED_ACTIVE)
#define SOCK_IS_CONNECTED_PASSIVE(Sock) \
((Sock)->ConfigureState == SO_CONFIGURED_PASSIVE)
#define SOCK_IS_NO_MAPPING(Sock) \
((Sock)->ConfigureState == SO_NO_MAPPING)
#define SOCK_IS_CLOSED(Sock) ((Sock)->State == SO_CLOSED)
#define SOCK_IS_LISTENING(Sock) ((Sock)->State == SO_LISTENING)
#define SOCK_IS_CONNECTING(Sock) ((Sock)->State == SO_CONNECTING)
#define SOCK_IS_CONNECTED(Sock) ((Sock)->State == SO_CONNECTED)
#define SOCK_IS_DISCONNECTING(Sock) ((Sock)->State == SO_DISCONNECTING)
#define SOCK_IS_NO_MORE_DATA(Sock) (0 != ((Sock)->Flag & SO_NO_MORE_DATA))
#define SOCK_SIGNATURE SIGNATURE_32 ('S', 'O', 'C', 'K')
#define SOCK_FROM_THIS(a) CR ((a), SOCKET, NetProtocol, SOCK_SIGNATURE)
#define SET_RCV_BUFFSIZE(Sock, Size) ((Sock)->RcvBuffer.HighWater = (Size))
#define GET_RCV_BUFFSIZE(Sock) ((Sock)->RcvBuffer.HighWater)
#define GET_RCV_DATASIZE(Sock) (((Sock)->RcvBuffer.DataQueue)->BufSize)
#define SET_SND_BUFFSIZE(Sock, Size) ((Sock)->SndBuffer.HighWater = (Size))
#define GET_SND_BUFFSIZE(Sock) ((Sock)->SndBuffer.HighWater)
#define GET_SND_DATASIZE(Sock) (((Sock)->SndBuffer.DataQueue)->BufSize)
#define SET_BACKLOG(Sock, Value) ((Sock)->BackLog = (Value))
#define GET_BACKLOG(Sock) ((Sock)->BackLog)
#define SOCK_ERROR(Sock, Error) ((Sock)->SockError = (Error))
#define SND_BUF_HDR_LEN(Sock) \
((SockBufFirst (&((Sock)->SndBuffer)))->TotalSize)
#define RCV_BUF_HDR_LEN(Sock) \
((SockBufFirst (&((Sock)->RcvBuffer)))->TotalSize)
#define SOCK_FROM_TOKEN(Token) (((SOCK_TOKEN *) (Token))->Sock)
#define PROTO_TOKEN_FORM_SOCK(SockToken, Type) \
((Type *) (((SOCK_TOKEN *) (SockToken))->Token))
typedef struct _SOCKET SOCKET;
///
/// Socket completion token
///
typedef struct _SOCK_COMPLETION_TOKEN {
EFI_EVENT Event; ///< The event to be issued
EFI_STATUS Status; ///< The status to be issued
} SOCK_COMPLETION_TOKEN;
///
/// The application token with data packet
///
typedef struct _SOCK_IO_TOKEN {
SOCK_COMPLETION_TOKEN Token;
union {
VOID *RxData;
VOID *TxData;
} Packet;
} SOCK_IO_TOKEN;
///
/// The request issued from socket layer to protocol layer.
///
typedef enum {
SOCK_ATTACH, ///< Attach current socket to a new PCB
SOCK_DETACH, ///< Detach current socket from the PCB
SOCK_CONFIGURE, ///< Configure attached PCB
SOCK_FLUSH, ///< Flush attached PCB
SOCK_SND, ///< Need protocol to send something
SOCK_SNDPUSH, ///< Need protocol to send pushed data
SOCK_SNDURG, ///< Need protocol to send urgent data
SOCK_CONSUMED, ///< Application has retrieved data from socket
SOCK_CONNECT, ///< Need to connect to a peer
SOCK_CLOSE, ///< Need to close the protocol process
SOCK_ABORT, ///< Need to reset the protocol process
SOCK_POLL, ///< Need to poll to the protocol layer
SOCK_ROUTE, ///< Need to add a route information
SOCK_MODE, ///< Need to get the mode data of the protocol
SOCK_GROUP ///< Need to join a mcast group
} SOCK_REQUEST;
///
/// The socket type.
///
typedef enum {
SOCK_DGRAM, ///< This socket providing datagram service
SOCK_STREAM ///< This socket providing stream service
} SOCK_TYPE;
///
/// The buffer structure of rcvd data and send data used by socket.
///
typedef struct _SOCK_BUFFER {
UINT32 HighWater; ///< The buffersize upper limit of sock_buffer
UINT32 LowWater; ///< The low warter mark of sock_buffer
NET_BUF_QUEUE *DataQueue; ///< The queue to buffer data
} SOCK_BUFFER;
/**
The handler of protocol for request from socket.
@param Socket The socket issuing the request to protocol
@param Request The request issued by socket
@param RequestData The request related data
@retval EFI_SUCCESS The socket request is completed successfully.
@retval other The error status returned by the corresponding TCP
layer function.
**/
typedef
EFI_STATUS
(*SOCK_PROTO_HANDLER) (
IN SOCKET *Socket,
IN SOCK_REQUEST Request,
IN VOID *RequestData
);
//
// Socket provided oprerations for low layer protocol
//
//
// Socket provided operations for user interface
//
/**
Set the state of the socket.
@param Sock Pointer to the socket.
@param State The new state to be set.
**/
VOID
SockSetState (
IN OUT SOCKET *Sock,
IN SOCK_STATE State
);
/**
Called by the low layer protocol to indicate the socket a connection is
established.
This function just changes the socket's state to SO_CONNECTED
and signals the token used for connection establishment.
@param Sock Pointer to the socket associated with the
established connection.
**/
VOID
SockConnEstablished (
IN SOCKET *Sock
);
/**
Called by the low layer protocol to indicate the connection is closed.
This function flushes the socket, sets the state to SO_CLOSED and signals
the close token.
@param Sock Pointer to the socket associated with the closed
connection.
**/
VOID
SockConnClosed (
IN OUT SOCKET *Sock
);
/**
Called by low layer protocol to indicate that some data is sent or processed.
This function trims the sent data in the socket send buffer, signals the data
token if proper.
@param Sock Pointer to the socket.
@param Count The length of the data processed or sent, in bytes.
**/
VOID
SockDataSent (
IN SOCKET *Sock,
IN UINT32 Count
);
/**
Called by the low layer protocol to copy some data in socket send
buffer starting from the specific offset to a buffer provided by
the caller.
@param Sock Pointer to the socket.
@param Offset The start point of the data to be copied.
@param Len The length of the data to be copied.
@param Dest Pointer to the destination to copy the data.
@return The data size copied.
**/
UINT32
SockGetDataToSend (
IN SOCKET *Sock,
IN UINT32 Offset,
IN UINT32 Len,
IN UINT8 *Dest
);
/**
Called by the low layer protocol to indicate that there
will be no more data from the communication peer.
This function set the socket's state to SO_NO_MORE_DATA and
signal all queued IO tokens with the error status EFI_CONNECTION_FIN.
@param Sock Pointer to the socket.
**/
VOID
SockNoMoreData (
IN OUT SOCKET *Sock
);
/**
Called by the low layer protocol to deliver received data to socket layer.
This function will append the data to the socket receive buffer, set ther
urgent data length and then check if any receive token can be signaled.
@param Sock Pointer to the socket.
@param NetBuffer Pointer to the buffer that contains the received
data.
@param UrgLen The length of the urgent data in the received data.
**/
VOID
SockDataRcvd (
IN SOCKET *Sock,
IN OUT NET_BUF *NetBuffer,
IN UINT32 UrgLen
);
/**
Get the length of the free space of the specific socket buffer.
@param Sock Pointer to the socket.
@param Which Flag to indicate which socket buffer to check,
either send buffer or receive buffer.
@return The length of the free space, in bytes.
**/
UINT32
SockGetFreeSpace (
IN SOCKET *Sock,
IN UINT32 Which
);
/**
Clone a new socket including its associated protocol control block.
@param Sock Pointer to the socket to be cloned.
@return Pointer to the newly cloned socket. If NULL, error condition occurred.
**/
SOCKET *
SockClone (
IN SOCKET *Sock
);
/**
Signal the receive token with the specific error or
set socket error code after error is received.
@param Sock Pointer to the socket.
@param Error The error code received.
**/
VOID
SockRcvdErr (
IN OUT SOCKET *Sock,
IN EFI_STATUS Error
);
///
/// Proto type of the create callback
///
typedef
EFI_STATUS
(*SOCK_CREATE_CALLBACK) (
IN SOCKET *This,
IN VOID *Context
);
///
/// Proto type of the destroy callback
///
typedef
VOID
(*SOCK_DESTROY_CALLBACK) (
IN SOCKET *This,
IN VOID *Context
);
///
/// The initialize data for create a new socket.
///
typedef struct _SOCK_INIT_DATA {
SOCK_TYPE Type;
SOCK_STATE State;
SOCKET *Parent; ///< The parent of this socket
UINT32 BackLog; ///< The connection limit for listening socket
UINT32 SndBufferSize; ///< The high warter mark of send buffer
UINT32 RcvBufferSize; ///< The high warter mark of receive buffer
VOID *Protocol; ///< The pointer to protocol function template
///< wanted to install on socket
//
// Callbacks after socket is created and before socket is to be destroyed.
//
SOCK_CREATE_CALLBACK CreateCallback; ///< Callback after created
SOCK_DESTROY_CALLBACK DestroyCallback; ///< Callback before destroied
VOID *Context; ///< The context of the callback
//
// Opaque protocol data.
//
VOID *ProtoData;
UINT32 DataSize;
SOCK_PROTO_HANDLER ProtoHandler; ///< The handler of protocol for socket request
EFI_HANDLE DriverBinding; ///< The driver binding handle
} SOCK_INIT_DATA;
///
/// The union type of TCP and UDP protocol.
///
typedef union _NET_PROTOCOL {
EFI_TCP4_PROTOCOL TcpProtocol; ///< Tcp protocol
EFI_UDP4_PROTOCOL UdpProtocol; ///< Udp protocol
} NET_PROTOCOL;
///
/// The socket structure representing a network service access point
///
struct _SOCKET {
//
// Socket description information
//
UINT32 Signature; ///< Signature of the socket
EFI_HANDLE SockHandle; ///< The virtual handle of the socket
EFI_HANDLE DriverBinding; ///< Socket's driver binding protocol
EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;
EFI_DEVICE_PATH_PROTOCOL *DevicePath;
LIST_ENTRY Link;
SOCK_CONFIGURE_STATE ConfigureState;
SOCK_TYPE Type;
SOCK_STATE State;
UINT16 Flag;
EFI_LOCK Lock; ///< The lock of socket
SOCK_BUFFER SndBuffer; ///< Send buffer of application's data
SOCK_BUFFER RcvBuffer; ///< Receive buffer of received data
EFI_STATUS SockError; ///< The error returned by low layer protocol
BOOLEAN IsDestroyed;
//
// Fields used to manage the connection request
//
UINT32 BackLog; ///< the limit of connection to this socket
UINT32 ConnCnt; ///< the current count of connections to it
SOCKET *Parent; ///< listening parent that accept the connection
LIST_ENTRY ConnectionList; ///< the connections maintained by this socket
//
// The queue to buffer application's asynchronous token
//
LIST_ENTRY ListenTokenList;
LIST_ENTRY RcvTokenList;
LIST_ENTRY SndTokenList;
LIST_ENTRY ProcessingSndTokenList;
SOCK_COMPLETION_TOKEN *ConnectionToken; ///< app's token to signal if connected
SOCK_COMPLETION_TOKEN *CloseToken; ///< app's token to signal if closed
//
// Interface for low level protocol
//
SOCK_PROTO_HANDLER ProtoHandler; ///< The request handler of protocol
UINT8 ProtoReserved[PROTO_RESERVED_LEN]; ///< Data fields reserved for protocol
NET_PROTOCOL NetProtocol; ///< TCP or UDP protocol socket used
//
// Callbacks after socket is created and before socket is to be destroyed.
//
SOCK_CREATE_CALLBACK CreateCallback; ///< Callback after created
SOCK_DESTROY_CALLBACK DestroyCallback; ///< Callback before destroied
VOID *Context; ///< The context of the callback
};
///
/// The token structure buffered in socket layer.
///
typedef struct _SOCK_TOKEN {
LIST_ENTRY TokenList; ///< The entry to add in the token list
SOCK_COMPLETION_TOKEN *Token; ///< The application's token
UINT32 RemainDataLen; ///< Unprocessed data length
SOCKET *Sock; ///< The poninter to the socket this token
///< belongs to
} SOCK_TOKEN;
///
/// Reserved data to access the NET_BUF delivered by UDP driver.
///
typedef struct _UDP_RSV_DATA {
EFI_TIME TimeStamp;
EFI_UDP4_SESSION_DATA Session;
} UDP_RSV_DATA;
///
/// Reserved data to access the NET_BUF delivered by TCP driver.
///
typedef struct _TCP_RSV_DATA {
UINT32 UrgLen;
} TCP_RSV_DATA;
/**
Create a socket and its associated protocol control block
with the intial data SockInitData and protocol specific
data ProtoData.
@param SockInitData Inital data to setting the socket.
@return Pointer to the newly created socket. If NULL, error condition occured.
**/
SOCKET *
SockCreateChild (
IN SOCK_INIT_DATA *SockInitData
);
/**
Destory the socket Sock and its associated protocol control block.
@param Sock The socket to be destroyed.
@retval EFI_SUCCESS The socket Sock is destroyed successfully.
@retval EFI_ACCESS_DENIED Failed to get the lock to access the socket.
**/
EFI_STATUS
SockDestroyChild (
IN SOCKET *Sock
);
/**
Configure the specific socket Sock using configuration data ConfigData.
@param Sock Pointer to the socket to be configured.
@param ConfigData Pointer to the configuration data.
@retval EFI_SUCCESS The socket is configured successfully.
@retval EFI_ACCESS_DENIED Failed to get the lock to access the socket or the
socket is already configured.
**/
EFI_STATUS
SockConfigure (
IN SOCKET *Sock,
IN VOID *ConfigData
);
/**
Initiate a connection establishment process.
@param Sock Pointer to the socket to initiate the initate the
connection.
@param Token Pointer to the token used for the connection
operation.
@retval EFI_SUCCESS The connection is initialized successfully.
@retval EFI_ACCESS_DENIED Failed to get the lock to access the socket, or the
socket is closed, or the socket is not configured to
be an active one, or the token is already in one of
this socket's lists.
@retval EFI_NO_MAPPING The IP address configuration operation is not
finished.
@retval EFI_NOT_STARTED The socket is not configured.
**/
EFI_STATUS
SockConnect (
IN SOCKET *Sock,
IN VOID *Token
);
/**
Issue a listen token to get an existed connected network instance
or wait for a connection if there is none.
@param Sock Pointer to the socket to accept connections.
@param Token The token to accept a connection.
@retval EFI_SUCCESS Either a connection is accpeted or the Token is
buffered for further acception.
@retval EFI_ACCESS_DENIED Failed to get the lock to access the socket, or the
socket is closed, or the socket is not configured to
be a passive one, or the token is already in one of
this socket's lists.
@retval EFI_NO_MAPPING The IP address configuration operation is not
finished.
@retval EFI_NOT_STARTED The socket is not configured.
@retval EFI_OUT_OF_RESOURCE Failed to buffer the Token due to memory limit.
**/
EFI_STATUS
SockAccept (
IN SOCKET *Sock,
IN VOID *Token
);
/**
Issue a token with data to the socket to send out.
@param Sock Pointer to the socket to process the token with
data.
@param Token The token with data that needs to send out.
@retval EFI_SUCCESS The token is processed successfully.
@retval EFI_ACCESS_DENIED Failed to get the lock to access the socket, or the
socket is closed, or the socket is not in a
synchronized state , or the token is already in one
of this socket's lists.
@retval EFI_NO_MAPPING The IP address configuration operation is not
finished.
@retval EFI_NOT_STARTED The socket is not configured.
@retval EFI_OUT_OF_RESOURCE Failed to buffer the token due to memory limit.
**/
EFI_STATUS
SockSend (
IN SOCKET *Sock,
IN VOID *Token
);
/**
Issue a token to get data from the socket.
@param Sock Pointer to the socket to get data from.
@param Token The token to store the received data from the
socket.
@retval EFI_SUCCESS The token is processed successfully.
@retval EFI_ACCESS_DENIED Failed to get the lock to access the socket, or the
socket is closed, or the socket is not in a
synchronized state , or the token is already in one
of this socket's lists.
@retval EFI_NO_MAPPING The IP address configuration operation is not
finished.
@retval EFI_NOT_STARTED The socket is not configured.
@retval EFI_CONNECTION_FIN The connection is closed and there is no more data.
@retval EFI_OUT_OF_RESOURCE Failed to buffer the token due to memory limit.
**/
EFI_STATUS
SockRcv (
IN SOCKET *Sock,
IN VOID *Token
);
/**
Reset the socket and its associated protocol control block.
@param Sock Pointer to the socket to be flushed.
@retval EFI_SUCCESS The socket is flushed successfully.
@retval EFI_ACCESS_DENIED Failed to get the lock to access the socket.
**/
EFI_STATUS
SockFlush (
IN SOCKET *Sock
);
/**
Close or abort the socket associated connection.
@param Sock Pointer to the socket of the connection to close or
abort.
@param Token The token for close operation.
@param OnAbort TRUE for aborting the connection, FALSE to close it.
@retval EFI_SUCCESS The close or abort operation is initialized
successfully.
@retval EFI_ACCESS_DENIED Failed to get the lock to access the socket, or the
socket is closed, or the socket is not in a
synchronized state , or the token is already in one
of this socket's lists.
@retval EFI_NO_MAPPING The IP address configuration operation is not
finished.
@retval EFI_NOT_STARTED The socket is not configured.
**/
EFI_STATUS
SockClose (
IN SOCKET *Sock,
IN VOID *Token,
IN BOOLEAN OnAbort
);
/**
Get the mode data of the low layer protocol.
@param Sock Pointer to the socket to get mode data from.
@param Mode Pointer to the data to store the low layer mode
information.
@retval EFI_SUCCESS The mode data is got successfully.
@retval EFI_NOT_STARTED The socket is not configured.
**/
EFI_STATUS
SockGetMode (
IN SOCKET *Sock,
IN OUT VOID *Mode
);
/**
Configure the low level protocol to join a multicast group for
this socket's connection.
@param Sock Pointer to the socket of the connection to join the
specific multicast group.
@param GroupInfo Pointer to the multicast group info.
@retval EFI_SUCCESS The configuration is done successfully.
@retval EFI_ACCESS_DENIED Failed to get the lock to access the socket.
@retval EFI_NOT_STARTED The socket is not configured.
**/
EFI_STATUS
SockGroup (
IN SOCKET *Sock,
IN VOID *GroupInfo
);
/**
Add or remove route information in IP route table associated
with this socket.
@param Sock Pointer to the socket associated with the IP route
table to operate on.
@param RouteInfo Pointer to the route information to be processed.
@retval EFI_SUCCESS The route table is updated successfully.
@retval EFI_ACCESS_DENIED Failed to get the lock to access the socket.
@retval EFI_NO_MAPPING The IP address configuration operation is not
finished.
@retval EFI_NOT_STARTED The socket is not configured.
**/
EFI_STATUS
SockRoute (
IN SOCKET *Sock,
IN VOID *RouteInfo
);
//
// Supporting function to operate on socket buffer
//
/**
Get the first buffer block in the specific socket buffer.
@param Sockbuf Pointer to the socket buffer.
@return Pointer to the first buffer in the queue. NULL if the queue is empty.
**/
NET_BUF *
SockBufFirst (
IN SOCK_BUFFER *Sockbuf
);
/**
Get the next buffer block in the specific socket buffer.
@param Sockbuf Pointer to the socket buffer.
@param SockEntry Pointer to the buffer block prior to the required
one.
@return Pointer to the buffer block next to SockEntry. NULL if SockEntry is
the tail or head entry.
**/
NET_BUF *
SockBufNext (
IN SOCK_BUFFER *Sockbuf,
IN NET_BUF *SockEntry
);
#endif
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