/** @file Definitions for the EFI Socket protocol. Copyright (c) 2011, 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. **/ #ifndef _EFI_SOCKET_H_ #define _EFI_SOCKET_H_ #include #include #include #include #include //------------------------------------------------------------------------------ // Data Types //------------------------------------------------------------------------------ /** EfiSocketLib (SocketDxe) interface **/ typedef struct _EFI_SOCKET_PROTOCOL EFI_SOCKET_PROTOCOL; /** Constructor/Destructor @retval EFI_SUCCESS The operation was successful **/ typedef EFI_STATUS (* PFN_ESL_xSTRUCTOR) ( VOID ); //------------------------------------------------------------------------------ // Data //------------------------------------------------------------------------------ extern PFN_ESL_xSTRUCTOR mpfnEslConstructor; ///< Constructor address for EslSocketLib extern PFN_ESL_xSTRUCTOR mpfnEslDestructor; ///< Destructor address for EslSocketLib extern EFI_GUID gEfiSocketProtocolGuid; ///< Socket protocol GUID extern EFI_GUID gEfiSocketServiceBindingProtocolGuid; ///< Socket layer service binding protocol GUID //------------------------------------------------------------------------------ // Socket API //------------------------------------------------------------------------------ /** Accept a network connection. This routine calls the network specific layer to remove the next connection from the FIFO. The ::accept calls this routine to poll for a network connection to the socket. When a connection is available this routine returns the ::EFI_SOCKET_PROTOCOL structure address associated with the new socket and the remote network address if requested. @param [in] pSocketProtocol Address of the ::EFI_SOCKET_PROTOCOL structure. @param [in] pSockAddr Address of a buffer to receive the remote network address. @param [in, out] pSockAddrLength Length in bytes of the address buffer. On output specifies the length of the remote network address. @param [out] ppSocketProtocol Address of a buffer to receive the ::EFI_SOCKET_PROTOCOL instance associated with the new socket. @param [out] pErrno Address to receive the errno value upon completion. @retval EFI_SUCCESS New connection successfully created @retval EFI_NOT_READY No connection is available **/ typedef EFI_STATUS (* PFN_ACCEPT) ( IN EFI_SOCKET_PROTOCOL * pSocketProtocol, IN struct sockaddr * pSockAddr, IN OUT socklen_t * pSockAddrLength, IN EFI_SOCKET_PROTOCOL ** ppSocketProtocol, IN int * pErrno ); /** Bind a name to a socket. This routine calls the network specific layer to save the network address of the local connection point. The ::bind routine calls this routine to connect a name (network address and port) to a socket on the local machine. @param [in] pSocketProtocol Address of the ::EFI_SOCKET_PROTOCOL structure. @param [in] pSockAddr Address of a sockaddr structure that contains the connection point on the local machine. An IPv4 address of INADDR_ANY specifies that the connection is made to all of the network stacks on the platform. Specifying a specific IPv4 address restricts the connection to the network stack supporting that address. Specifying zero for the port causes the network layer to assign a port number from the dynamic range. Specifying a specific port number causes the network layer to use that port. @param [in] SockAddrLen Specifies the length in bytes of the sockaddr structure. @param [out] pErrno Address to receive the errno value upon completion. @retval EFI_SUCCESS - Socket successfully created **/ typedef EFI_STATUS (* PFN_BIND) ( IN EFI_SOCKET_PROTOCOL * pSocketProtocol, IN const struct sockaddr * pSockAddr, IN socklen_t SockAddrLength, OUT int * pErrno ); /** Determine if the socket is closed This routine checks the state of the socket to determine if the network specific layer has completed the close operation. The ::close routine polls this routine to determine when the close operation is complete. The close operation needs to reverse the operations of the ::EslSocketAllocate routine. @param [in] pSocketProtocol Address of the ::EFI_SOCKET_PROTOCOL structure. @param [out] pErrno Address to receive the errno value upon completion. @retval EFI_SUCCESS Socket successfully closed @retval EFI_NOT_READY Close still in progress @retval EFI_ALREADY Close operation already in progress @retval Other Failed to close the socket **/ typedef EFI_STATUS (* PFN_CLOSE_POLL) ( IN EFI_SOCKET_PROTOCOL * pSocketProtocol, IN int * pErrno ); /** Start the close operation on the socket This routine calls the network specific layer to initiate the close state machine. This routine then calls the network specific layer to determine if the close state machine has gone to completion. The result from this poll is returned to the caller. The ::close routine calls this routine to start the close operation which reverses the operations of the ::EslSocketAllocate routine. The close routine then polls the ::EslSocketClosePoll routine to determine when the socket is closed. @param [in] pSocketProtocol Address of the ::EFI_SOCKET_PROTOCOL structure. @param [in] bCloseNow Boolean to control close behavior @param [out] pErrno Address to receive the errno value upon completion. @retval EFI_SUCCESS Socket successfully closed @retval EFI_NOT_READY Close still in progress @retval EFI_ALREADY Close operation already in progress @retval Other Failed to close the socket **/ typedef EFI_STATUS (* PFN_CLOSE_START) ( IN EFI_SOCKET_PROTOCOL * pSocketProtocol, IN BOOLEAN bCloseNow, IN int * pErrno ); /** Connect to a remote system via the network. This routine calls the network specific layer to establish the remote system address and establish the connection to the remote system. The ::connect routine calls this routine to establish a connection with the specified remote system. This routine is designed to be polled by the connect routine for completion of the network connection. @param [in] pSocketProtocol Address of the ::EFI_SOCKET_PROTOCOL structure. @param [in] pSockAddr Network address of the remote system. @param [in] SockAddrLength Length in bytes of the network address. @param [out] pErrno Address to receive the errno value upon completion. @retval EFI_SUCCESS The connection was successfully established. @retval EFI_NOT_READY The connection is in progress, call this routine again. @retval Others The connection attempt failed. **/ typedef EFI_STATUS (* PFN_CONNECT) ( IN EFI_SOCKET_PROTOCOL * pSocketProtocol, IN const struct sockaddr * pSockAddr, IN socklen_t SockAddrLength, IN int * pErrno ); /** Get the local address. This routine calls the network specific layer to get the network address of the local host connection point. The ::getsockname routine calls this routine to obtain the network address associated with the local host connection point. @param [in] pSocketProtocol Address of the ::EFI_SOCKET_PROTOCOL structure. @param [out] pAddress Network address to receive the local system address @param [in,out] pAddressLength Length of the local network address structure @param [out] pErrno Address to receive the errno value upon completion. @retval EFI_SUCCESS - Local address successfully returned **/ typedef EFI_STATUS (* PFN_GET_LOCAL) ( IN EFI_SOCKET_PROTOCOL * pSocketProtocol, OUT struct sockaddr * pAddress, IN OUT socklen_t * pAddressLength, IN int * pErrno ); /** Get the peer address. This routine calls the network specific layer to get the remote system connection point. The ::getpeername routine calls this routine to obtain the network address of the remote connection point. @param [in] pSocketProtocol Address of the ::EFI_SOCKET_PROTOCOL structure. @param [out] pAddress Network address to receive the remote system address @param [in,out] pAddressLength Length of the remote network address structure @param [out] pErrno Address to receive the errno value upon completion. @retval EFI_SUCCESS - Remote address successfully returned **/ typedef EFI_STATUS (* PFN_GET_PEER) ( IN EFI_SOCKET_PROTOCOL * pSocketProtocol, OUT struct sockaddr * pAddress, IN OUT socklen_t * pAddressLength, IN int * pErrno ); /** Establish the known port to listen for network connections. This routine calls into the network protocol layer to establish a handler that is called upon connection completion. The handler is responsible for inserting the connection into the FIFO. The ::listen routine indirectly calls this routine to place the socket into a state that enables connection attempts. Connections are placed in a FIFO that is serviced by the application. The application calls the ::accept (::EslSocketAccept) routine to remove the next connection from the FIFO and get the associated socket and address. @param [in] pSocketProtocol Address of the socket protocol structure. @param [in] Backlog Backlog specifies the maximum FIFO depth for the connections waiting for the application to call accept. Connection attempts received while the queue is full are refused. @param [out] pErrno Address to receive the errno value upon completion. @retval EFI_SUCCESS - Socket successfully created @retval Other - Failed to enable the socket for listen **/ typedef EFI_STATUS (* PFN_LISTEN) ( IN EFI_SOCKET_PROTOCOL * pSocketProtocol, IN INT32 Backlog, OUT int * pErrno ); /** Get the socket options This routine handles the socket level options and passes the others to the network specific layer. The ::getsockopt routine calls this routine to retrieve the socket options one at a time by name. @param [in] pSocketProtocol Address of the ::EFI_SOCKET_PROTOCOL structure. @param [in] level Option protocol level @param [in] OptionName Name of the option @param [out] pOptionValue Buffer to receive the option value @param [in,out] pOptionLength Length of the buffer in bytes, upon return length of the option value in bytes @param [out] pErrno Address to receive the errno value upon completion. @retval EFI_SUCCESS - Socket data successfully received **/ typedef EFI_STATUS (* PFN_OPTION_GET) ( IN EFI_SOCKET_PROTOCOL * pSocketProtocol, IN int level, IN int OptionName, OUT void * __restrict pOptionValue, IN OUT socklen_t * __restrict pOptionLength, IN int * pErrno ); /** Set the socket options This routine handles the socket level options and passes the others to the network specific layer. The ::setsockopt routine calls this routine to adjust the socket options one at a time by name. @param [in] pSocketProtocol Address of the ::EFI_SOCKET_PROTOCOL structure. @param [in] level Option protocol level @param [in] OptionName Name of the option @param [in] pOptionValue Buffer containing the option value @param [in] OptionLength Length of the buffer in bytes @param [out] pErrno Address to receive the errno value upon completion. @retval EFI_SUCCESS - Option successfully set **/ typedef EFI_STATUS (* PFN_OPTION_SET) ( IN EFI_SOCKET_PROTOCOL * pSocketProtocol, IN int level, IN int OptionName, IN CONST void * pOptionValue, IN socklen_t OptionLength, IN int * pErrno ); /** Poll a socket for pending activity. This routine builds a detected event mask which is returned to the caller in the buffer provided. The ::poll routine calls this routine to determine if the socket needs to be serviced as a result of connection, error, receive or transmit activity. @param [in] pSocketProtocol Address of the ::EFI_SOCKET_PROTOCOL structure. @param [in] Events Events of interest for this socket @param [in] pEvents Address to receive the detected events @param [out] pErrno Address to receive the errno value upon completion. @retval EFI_SUCCESS - Socket successfully polled @retval EFI_INVALID_PARAMETER - When pEvents is NULL **/ typedef EFI_STATUS (* PFN_POLL) ( IN EFI_SOCKET_PROTOCOL * pSocketProtocol, IN short Events, IN short * pEvents, IN int * pErrno ); /** Receive data from a network connection. This routine calls the network specific routine to remove the next portion of data from the receive queue and return it to the caller. The ::recvfrom routine calls this routine to determine if any data is received from the remote system. Note that the other routines ::recv and ::read are layered on top of ::recvfrom. @param [in] pSocketProtocol Address of the ::EFI_SOCKET_PROTOCOL structure. @param [in] Flags Message control flags @param [in] BufferLength Length of the the buffer @param [in] pBuffer Address of a buffer to receive the data. @param [in] pDataLength Number of received data bytes in the buffer. @param [out] pAddress Network address to receive the remote system address @param [in,out] pAddressLength Length of the remote network address structure @param [out] pErrno Address to receive the errno value upon completion. @retval EFI_SUCCESS - Socket data successfully received **/ typedef EFI_STATUS (* PFN_RECEIVE) ( IN EFI_SOCKET_PROTOCOL * pSocketProtocol, IN int Flags, IN size_t BufferLength, IN UINT8 * pBuffer, OUT size_t * pDataLength, OUT struct sockaddr * pAddress, IN OUT socklen_t * pAddressLength, IN int * pErrno ); /** Shutdown the socket receive and transmit operations This routine sets a flag to stop future transmissions and calls the network specific layer to cancel the pending receive operation. The ::shutdown routine calls this routine to stop receive and transmit operations on the socket. @param [in] pSocketProtocol Address of the ::EFI_SOCKET_PROTOCOL structure. @param [in] How Which operations to stop @param [out] pErrno Address to receive the errno value upon completion. @retval EFI_SUCCESS - Socket operations successfully shutdown **/ typedef EFI_STATUS (* PFN_SHUTDOWN) ( IN EFI_SOCKET_PROTOCOL * pSocketProtocol, IN int How, IN int * pErrno ); /** Initialize an endpoint for network communication. This routine initializes the communication endpoint. The ::socket routine calls this routine indirectly to create the communication endpoint. @param [in] pSocketProtocol Address of the socket protocol structure. @param [in] domain Select the family of protocols for the client or server application. See the ::socket documentation for values. @param [in] type Specifies how to make the network connection. See the ::socket documentation for values. @param [in] protocol Specifies the lower layer protocol to use. See the ::socket documentation for values. @param [out] pErrno Address to receive the errno value upon completion. @retval EFI_SUCCESS - Socket successfully created @retval EFI_INVALID_PARAMETER - Invalid domain value, errno = EAFNOSUPPORT @retval EFI_INVALID_PARAMETER - Invalid type value, errno = EINVAL @retval EFI_INVALID_PARAMETER - Invalid protocol value, errno = EINVAL **/ typedef EFI_STATUS (*PFN_SOCKET) ( IN EFI_SOCKET_PROTOCOL * pSocketProtocol, IN int domain, IN int type, IN int protocol, IN int * pErrno ); /** Send data using a network connection. This routine calls the network specific layer to queue the data for transmission. Eventually the buffer will reach the head of the queue and will get transmitted over the network. For datagram sockets there is no guarantee that the data reaches the application running on the remote system. The ::sendto routine calls this routine to send data to the remote system. Note that ::send and ::write are layered on top of ::sendto. @param [in] pSocketProtocol Address of the ::EFI_SOCKET_PROTOCOL structure. @param [in] Flags Message control flags @param [in] BufferLength Length of the the buffer @param [in] pBuffer Address of a buffer containing the data to send @param [in] pDataLength Address to receive the number of data bytes sent @param [in] pAddress Network address of the remote system address @param [in] AddressLength Length of the remote network address structure @param [out] pErrno Address to receive the errno value upon completion. @retval EFI_SUCCESS - Socket data successfully queued for transmit **/ typedef EFI_STATUS (* PFN_TRANSMIT) ( IN EFI_SOCKET_PROTOCOL * pSocketProtocol, IN int Flags, IN size_t BufferLength, IN CONST UINT8 * pBuffer, OUT size_t * pDataLength, IN const struct sockaddr * pAddress, IN socklen_t AddressLength, IN int * pErrno ); //------------------------------------------------------------------------------ // Socket Protocol //------------------------------------------------------------------------------ /** Socket protocol declaration **/ typedef struct _EFI_SOCKET_PROTOCOL { EFI_HANDLE SocketHandle; ///< Handle for the socket PFN_ACCEPT pfnAccept; ///< Accept a network connection PFN_BIND pfnBind; ///< Bind a local address to the socket PFN_CLOSE_POLL pfnClosePoll; ///< Determine if the socket is closed PFN_CLOSE_START pfnCloseStart; ///< Start the close operation PFN_CONNECT pfnConnect; ///< Connect to a remote system PFN_GET_LOCAL pfnGetLocal; ///< Get local address PFN_GET_PEER pfnGetPeer; ///< Get peer address PFN_LISTEN pfnListen; ///< Enable connection attempts on known port PFN_OPTION_GET pfnOptionGet; ///< Get socket options PFN_OPTION_SET pfnOptionSet; ///< Set socket options PFN_POLL pfnPoll; ///< Poll for socket activity PFN_RECEIVE pfnReceive; ///< Receive data from a socket PFN_SHUTDOWN pfnShutdown; ///< Shutdown receive and transmit operations PFN_SOCKET pfnSocket; ///< Initialize the socket PFN_TRANSMIT pfnTransmit; ///< Transmit data using the socket } GCC_EFI_SOCKET_PROTOCOL; //------------------------------------------------------------------------------ // Non-blocking routines //------------------------------------------------------------------------------ /** Non blocking version of ::accept. @param [in] s Socket file descriptor returned from ::socket. @param [in] address Address of a buffer to receive the remote network address. @param [in, out] address_len Address of a buffer containing the Length in bytes of the remote network address buffer. Upon return, contains the length of the remote network address. @return This routine returns zero if successful and -1 when an error occurs. In the case of an error, ::errno contains more details. **/ int AcceptNB ( int s, struct sockaddr * address, socklen_t * address_len ); /** Connect to the EFI socket library @param [in] ppSocketProtocol Address to receive the socket protocol address @return Value for ::errno, zero (0) indicates success. **/ int EslServiceGetProtocol ( IN EFI_SOCKET_PROTOCOL ** ppSocketProtocol ); //------------------------------------------------------------------------------ #endif // _EFI_SOCKET_H_