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micropython/drivers/cc3000/src/socket.c

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/*****************************************************************************
*
* socket.c - CC3000 Host Driver Implementation.
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the
* distribution.
*
* Neither the name of Texas Instruments Incorporated nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*****************************************************************************/
//*****************************************************************************
//
//! \addtogroup socket_api
//! @{
//
//*****************************************************************************
#include <string.h>
#include <stdlib.h>
#include "hci.h"
#include "socket.h"
#include "evnt_handler.h"
#include "netapp.h"
//Enable this flag if and only if you must comply with BSD socket
//close() function
#ifdef _API_USE_BSD_CLOSE
#define close(sd) closesocket(sd)
#endif
//Enable this flag if and only if you must comply with BSD socket read() and
//write() functions
#ifdef _API_USE_BSD_READ_WRITE
#define read(sd, buf, len, flags) recv(sd, buf, len, flags)
#define write(sd, buf, len, flags) send(sd, buf, len, flags)
#endif
#define SOCKET_OPEN_PARAMS_LEN (12)
#define SOCKET_CLOSE_PARAMS_LEN (4)
#define SOCKET_ACCEPT_PARAMS_LEN (4)
#define SOCKET_BIND_PARAMS_LEN (20)
#define SOCKET_LISTEN_PARAMS_LEN (8)
#define SOCKET_GET_HOST_BY_NAME_PARAMS_LEN (9)
#define SOCKET_CONNECT_PARAMS_LEN (20)
#define SOCKET_SELECT_PARAMS_LEN (44)
#define SOCKET_SET_SOCK_OPT_PARAMS_LEN (20)
#define SOCKET_GET_SOCK_OPT_PARAMS_LEN (12)
#define SOCKET_RECV_FROM_PARAMS_LEN (12)
#define SOCKET_SENDTO_PARAMS_LEN (24)
#define SOCKET_MDNS_ADVERTISE_PARAMS_LEN (12)
#define SOCKET_GET_MSS_VALUE_PARAMS_LEN (4)
// The legnth of arguments for the SEND command: sd + buff_offset + len + flags,
// while size of each parameter is 32 bit - so the total length is 16 bytes;
#define HCI_CMND_SEND_ARG_LENGTH (16)
#define SELECT_TIMEOUT_MIN_MICRO_SECONDS 5000
#define HEADERS_SIZE_DATA (SPI_HEADER_SIZE + 5)
#define SIMPLE_LINK_HCI_CMND_TRANSPORT_HEADER_SIZE (SPI_HEADER_SIZE + SIMPLE_LINK_HCI_CMND_HEADER_SIZE)
#define MDNS_DEVICE_SERVICE_MAX_LENGTH (32)
//*****************************************************************************
//
//! HostFlowControlConsumeBuff
//!
//! @param sd socket descriptor
//!
//! @return 0 in case there are buffers available,
//! -1 in case of bad socket
//! -2 if there are no free buffers present (only when
//! SEND_NON_BLOCKING is enabled)
//!
//! @brief if SEND_NON_BLOCKING not define - block until have free buffer
//! becomes available, else return immediately with correct status
//! regarding the buffers available.
//
//*****************************************************************************
static INT16 HostFlowControlConsumeBuff(INT16 sd)
{
#ifndef SEND_NON_BLOCKING
/* wait in busy loop */
do
{
// In case last transmission failed then we will return the last failure
// reason here.
// Note that the buffer will not be allocated in this case
if (tSLInformation.slTransmitDataError != 0)
{
CC3000_EXPORT(errno) = tSLInformation.slTransmitDataError;
tSLInformation.slTransmitDataError = 0;
return CC3000_EXPORT(errno);
}
if(SOCKET_STATUS_ACTIVE != get_socket_active_status(sd))
return -1;
} while(0 == tSLInformation.usNumberOfFreeBuffers);
tSLInformation.usNumberOfFreeBuffers--;
return 0;
#else
// In case last transmission failed then we will return the last failure
// reason here.
// Note that the buffer will not be allocated in this case
if (tSLInformation.slTransmitDataError != 0)
{
CC3000_EXPORT(errno) = tSLInformation.slTransmitDataError;
tSLInformation.slTransmitDataError = 0;
return CC3000_EXPORT(errno);
}
if(SOCKET_STATUS_ACTIVE != get_socket_active_status(sd))
return -1;
//If there are no available buffers, return -2. It is recommended to use
// select or receive to see if there is any buffer occupied with received data
// If so, call receive() to release the buffer.
if(0 == tSLInformation.usNumberOfFreeBuffers)
{
return -2;
}
else
{
tSLInformation.usNumberOfFreeBuffers--;
return 0;
}
#endif
}
//*****************************************************************************
//
//! socket
//!
//! @param domain selects the protocol family which will be used for
//! communication. On this version only AF_INET is supported
//! @param type specifies the communication semantics. On this version
//! only SOCK_STREAM, SOCK_DGRAM, SOCK_RAW are supported
//! @param protocol specifies a particular protocol to be used with the
//! socket IPPROTO_TCP, IPPROTO_UDP or IPPROTO_RAW are
//! supported.
//!
//! @return On success, socket handle that is used for consequent socket
//! operations. On error, -1 is returned.
//!
//! @brief create an endpoint for communication
//! The socket function creates a socket that is bound to a specific
//! transport service provider. This function is called by the
//! application layer to obtain a socket handle.
//
//*****************************************************************************
INT16 CC3000_EXPORT(socket)(INT32 domain, INT32 type, INT32 protocol)
{
INT32 ret;
UINT8 *ptr, *args;
ret = EFAIL;
ptr = tSLInformation.pucTxCommandBuffer;
args = (ptr + HEADERS_SIZE_CMD);
// Fill in HCI packet structure
args = UINT32_TO_STREAM(args, domain);
args = UINT32_TO_STREAM(args, type);
args = UINT32_TO_STREAM(args, protocol);
// Initiate a HCI command
hci_command_send(HCI_CMND_SOCKET, ptr, SOCKET_OPEN_PARAMS_LEN);
// Since we are in blocking state - wait for event complete
SimpleLinkWaitEvent(HCI_CMND_SOCKET, &ret);
// Process the event
CC3000_EXPORT(errno) = ret;
set_socket_active_status(ret, SOCKET_STATUS_ACTIVE);
return(ret);
}
//*****************************************************************************
//
//! closesocket
//!
//! @param sd socket handle.
//!
//! @return On success, zero is returned. On error, -1 is returned.
//!
//! @brief The socket function closes a created socket.
//
//*****************************************************************************
INT32 CC3000_EXPORT(closesocket)(INT32 sd)
{
INT32 ret;
UINT8 *ptr, *args;
ret = EFAIL;
ptr = tSLInformation.pucTxCommandBuffer;
args = (ptr + HEADERS_SIZE_CMD);
// Fill in HCI packet structure
args = UINT32_TO_STREAM(args, sd);
// Initiate a HCI command
hci_command_send(HCI_CMND_CLOSE_SOCKET,
ptr, SOCKET_CLOSE_PARAMS_LEN);
// Since we are in blocking state - wait for event complete
SimpleLinkWaitEvent(HCI_CMND_CLOSE_SOCKET, &ret);
CC3000_EXPORT(errno) = ret;
// since 'close' call may result in either OK (and then it closed) or error
// mark this socket as invalid
set_socket_active_status(sd, SOCKET_STATUS_INACTIVE);
return(ret);
}
//*****************************************************************************
//
//! accept
//!
//! @param[in] sd socket descriptor (handle)
//! @param[out] addr the argument addr is a pointer to a sockaddr structure
//! This structure is filled in with the address of the
//! peer socket, as known to the communications layer.
//! determined. The exact format of the address returned
//! addr is by the socket's address sockaddr.
//! On this version only AF_INET is supported.
//! This argument returns in network order.
//! @param[out] addrlen the addrlen argument is a value-result argument:
//! it should initially contain the size of the structure
//! pointed to by addr.
//!
//! @return For socket in blocking mode:
//! On success, socket handle. on failure negative
//! For socket in non-blocking mode:
//! - On connection establishment, socket handle
//! - On connection pending, SOC_IN_PROGRESS (-2)
//! - On failure, SOC_ERROR (-1)
//!
//! @brief accept a connection on a socket:
//! This function is used with connection-based socket types
//! (SOCK_STREAM). It extracts the first connection request on the
//! queue of pending connections, creates a new connected socket, and
//! returns a new file descriptor referring to that socket.
//! The newly created socket is not in the listening state.
//! The original socket sd is unaffected by this call.
//! The argument sd is a socket that has been created with socket(),
//! bound to a local address with bind(), and is listening for
//! connections after a listen(). The argument addr is a pointer
//! to a sockaddr structure. This structure is filled in with the
//! address of the peer socket, as known to the communications layer.
//! The exact format of the address returned addr is determined by the
//! socket's address family. The addrlen argument is a value-result
//! argument: it should initially contain the size of the structure
//! pointed to by addr, on return it will contain the actual
//! length (in bytes) of the address returned.
//!
//! @sa socket ; bind ; listen
//
//*****************************************************************************
INT32 CC3000_EXPORT(accept)(INT32 sd, sockaddr *addr, socklen_t *addrlen)
{
INT32 ret;
UINT8 *ptr, *args;
tBsdReturnParams tAcceptReturnArguments;
ret = EFAIL;
ptr = tSLInformation.pucTxCommandBuffer;
args = (ptr + HEADERS_SIZE_CMD);
// Fill in temporary command buffer
args = UINT32_TO_STREAM(args, sd);
// Initiate a HCI command
hci_command_send(HCI_CMND_ACCEPT,
ptr, SOCKET_ACCEPT_PARAMS_LEN);
// Since we are in blocking state - wait for event complete
SimpleLinkWaitEvent(HCI_CMND_ACCEPT, &tAcceptReturnArguments);
// need specify return parameters!!!
memcpy(addr, &tAcceptReturnArguments.tSocketAddress, ASIC_ADDR_LEN);
*addrlen = ASIC_ADDR_LEN;
CC3000_EXPORT(errno) = tAcceptReturnArguments.iStatus;
ret = CC3000_EXPORT(errno);
// if succeeded, iStatus = new socket descriptor. otherwise - error number
if(M_IS_VALID_SD(ret))
{
set_socket_active_status(ret, SOCKET_STATUS_ACTIVE);
}
else
{
set_socket_active_status(sd, SOCKET_STATUS_INACTIVE);
}
return(ret);
}
//*****************************************************************************
//
//! bind
//!
//! @param[in] sd socket descriptor (handle)
//! @param[out] addr specifies the destination address. On this version
//! only AF_INET is supported.
//! @param[out] addrlen contains the size of the structure pointed to by addr.
//!
//! @return On success, zero is returned. On error, -1 is returned.
//!
//! @brief assign a name to a socket
//! This function gives the socket the local address addr.
//! addr is addrlen bytes long. Traditionally, this is called when a
//! socket is created with socket, it exists in a name space (address
//! family) but has no name assigned.
//! It is necessary to assign a local address before a SOCK_STREAM
//! socket may receive connections.
//!
//! @sa socket ; accept ; listen
//
//*****************************************************************************
INT32 CC3000_EXPORT(bind)(INT32 sd, const sockaddr *addr, INT32 addrlen)
{
INT32 ret;
UINT8 *ptr, *args;
ret = EFAIL;
ptr = tSLInformation.pucTxCommandBuffer;
args = (ptr + HEADERS_SIZE_CMD);
addrlen = ASIC_ADDR_LEN;
// Fill in temporary command buffer
args = UINT32_TO_STREAM(args, sd);
args = UINT32_TO_STREAM(args, 0x00000008);
args = UINT32_TO_STREAM(args, addrlen);
ARRAY_TO_STREAM(args, ((UINT8 *)addr), addrlen);
// Initiate a HCI command
hci_command_send(HCI_CMND_BIND,
ptr, SOCKET_BIND_PARAMS_LEN);
// Since we are in blocking state - wait for event complete
SimpleLinkWaitEvent(HCI_CMND_BIND, &ret);
CC3000_EXPORT(errno) = ret;
return(ret);
}
//*****************************************************************************
//
//! listen
//!
//! @param[in] sd socket descriptor (handle)
//! @param[in] backlog specifies the listen queue depth. On this version
//! backlog is not supported.
//! @return On success, zero is returned. On error, -1 is returned.
//!
//! @brief listen for connections on a socket
//! The willingness to accept incoming connections and a queue
//! limit for incoming connections are specified with listen(),
//! and then the connections are accepted with accept.
//! The listen() call applies only to sockets of type SOCK_STREAM
//! The backlog parameter defines the maximum length the queue of
//! pending connections may grow to.
//!
//! @sa socket ; accept ; bind
//!
//! @note On this version, backlog is not supported
//
//*****************************************************************************
INT32 CC3000_EXPORT(listen)(INT32 sd, INT32 backlog)
{
INT32 ret;
UINT8 *ptr, *args;
ret = EFAIL;
ptr = tSLInformation.pucTxCommandBuffer;
args = (ptr + HEADERS_SIZE_CMD);
// Fill in temporary command buffer
args = UINT32_TO_STREAM(args, sd);
args = UINT32_TO_STREAM(args, backlog);
// Initiate a HCI command
hci_command_send(HCI_CMND_LISTEN,
ptr, SOCKET_LISTEN_PARAMS_LEN);
// Since we are in blocking state - wait for event complete
SimpleLinkWaitEvent(HCI_CMND_LISTEN, &ret);
CC3000_EXPORT(errno) = ret;
return(ret);
}
//*****************************************************************************
//
//! gethostbyname
//!
//! @param[in] hostname host name
//! @param[in] usNameLen name length
//! @param[out] out_ip_addr This parameter is filled in with host IP address.
//! In case that host name is not resolved,
//! out_ip_addr is zero.
//! @return On success, positive is returned. On error, negative is returned
//!
//! @brief Get host IP by name. Obtain the IP Address of machine on network,
//! by its name.
//!
//! @note On this version, only blocking mode is supported. Also note that
//! the function requires DNS server to be configured prior to its usage.
//
//*****************************************************************************
#ifndef CC3000_TINY_DRIVER
INT16 CC3000_EXPORT(gethostbyname)(CHAR * hostname, UINT16 usNameLen,
UINT32* out_ip_addr)
{
tBsdGethostbynameParams ret;
UINT8 *ptr, *args;
CC3000_EXPORT(errno) = EFAIL;
if (usNameLen > HOSTNAME_MAX_LENGTH)
{
return CC3000_EXPORT(errno);
}
ptr = tSLInformation.pucTxCommandBuffer;
args = (ptr + SIMPLE_LINK_HCI_CMND_TRANSPORT_HEADER_SIZE);
// Fill in HCI packet structure
args = UINT32_TO_STREAM(args, 8);
args = UINT32_TO_STREAM(args, usNameLen);
ARRAY_TO_STREAM(args, hostname, usNameLen);
// Initiate a HCI command
hci_command_send(HCI_CMND_GETHOSTNAME, ptr, SOCKET_GET_HOST_BY_NAME_PARAMS_LEN
+ usNameLen - 1);
// Since we are in blocking state - wait for event complete
SimpleLinkWaitEvent(HCI_EVNT_BSD_GETHOSTBYNAME, &ret);
CC3000_EXPORT(errno) = ret.retVal;
(*((INT32*)out_ip_addr)) = ret.outputAddress;
return CC3000_EXPORT(errno);
}
#endif
//*****************************************************************************
//
//! connect
//!
//! @param[in] sd socket descriptor (handle)
//! @param[in] addr specifies the destination addr. On this version
//! only AF_INET is supported.
//! @param[out] addrlen contains the size of the structure pointed to by addr
//! @return On success, zero is returned. On error, -1 is returned
//!
//! @brief initiate a connection on a socket
//! Function connects the socket referred to by the socket descriptor
//! sd, to the address specified by addr. The addrlen argument
//! specifies the size of addr. The format of the address in addr is
//! determined by the address space of the socket. If it is of type
//! SOCK_DGRAM, this call specifies the peer with which the socket is
//! to be associated; this address is that to which datagrams are to be
//! sent, and the only address from which datagrams are to be received.
//! If the socket is of type SOCK_STREAM, this call attempts to make a
//! connection to another socket. The other socket is specified by
//! address, which is an address in the communications space of the
//! socket. Note that the function implements only blocking behavior
//! thus the caller will be waiting either for the connection
//! establishment or for the connection establishment failure.
//!
//! @sa socket
//
//*****************************************************************************
INT32 CC3000_EXPORT(connect)(INT32 sd, const sockaddr *addr, INT32 addrlen)
{
INT32 ret;
UINT8 *ptr, *args;
ret = EFAIL;
ptr = tSLInformation.pucTxCommandBuffer;
args = (ptr + SIMPLE_LINK_HCI_CMND_TRANSPORT_HEADER_SIZE);
addrlen = 8;
// Fill in temporary command buffer
args = UINT32_TO_STREAM(args, sd);
args = UINT32_TO_STREAM(args, 0x00000008);
args = UINT32_TO_STREAM(args, addrlen);
ARRAY_TO_STREAM(args, ((UINT8 *)addr), addrlen);
// Initiate a HCI command
hci_command_send(HCI_CMND_CONNECT,
ptr, SOCKET_CONNECT_PARAMS_LEN);
// Since we are in blocking state - wait for event complete
SimpleLinkWaitEvent(HCI_CMND_CONNECT, &ret);
CC3000_EXPORT(errno) = ret;
return((INT32)ret);
}
//*****************************************************************************
//
//! select
//!
//! @param[in] nfds the highest-numbered file descriptor in any of the
//! three sets, plus 1.
//! @param[out] writesds socket descriptors list for write monitoring
//! @param[out] readsds socket descriptors list for read monitoring
//! @param[out] exceptsds socket descriptors list for exception monitoring
//! @param[in] timeout is an upper bound on the amount of time elapsed
//! before select() returns. Null means infinity
//! timeout. The minimum timeout is 5 milliseconds,
//! less than 5 milliseconds will be set
//! automatically to 5 milliseconds.
//! @return On success, select() returns the number of file descriptors
//! contained in the three returned descriptor sets (that is, the
//! total number of bits that are set in readfds, writefds,
//! exceptfds) which may be zero if the timeout expires before
//! anything interesting happens.
//! On error, -1 is returned.
//! *readsds - return the sockets on which Read request will
//! return without delay with valid data.
//! *writesds - return the sockets on which Write request
//! will return without delay.
//! *exceptsds - return the sockets which closed recently.
//!
//! @brief Monitor socket activity
//! Select allow a program to monitor multiple file descriptors,
//! waiting until one or more of the file descriptors become
//! "ready" for some class of I/O operation
//!
//! @Note If the timeout value set to less than 5ms it will automatically set
//! to 5ms to prevent overload of the system
//!
//! @sa socket
//
//*****************************************************************************
INT16 CC3000_EXPORT(select)(INT32 nfds, fd_set *readsds, fd_set *writesds, fd_set *exceptsds,
struct cc3000_timeval *timeout)
{
UINT8 *ptr, *args;
tBsdSelectRecvParams tParams;
UINT32 is_blocking;
if( timeout == NULL)
{
is_blocking = 1; /* blocking , infinity timeout */
}
else
{
is_blocking = 0; /* no blocking, timeout */
}
// Fill in HCI packet structure
ptr = tSLInformation.pucTxCommandBuffer;
args = (ptr + HEADERS_SIZE_CMD);
// Fill in temporary command buffer
args = UINT32_TO_STREAM(args, nfds);
args = UINT32_TO_STREAM(args, 0x00000014);
args = UINT32_TO_STREAM(args, 0x00000014);
args = UINT32_TO_STREAM(args, 0x00000014);
args = UINT32_TO_STREAM(args, 0x00000014);
args = UINT32_TO_STREAM(args, is_blocking);
args = UINT32_TO_STREAM(args, ((readsds) ? *(UINT32*)readsds : 0));
args = UINT32_TO_STREAM(args, ((writesds) ? *(UINT32*)writesds : 0));
args = UINT32_TO_STREAM(args, ((exceptsds) ? *(UINT32*)exceptsds : 0));
if (timeout)
{
if ( 0 == timeout->tv_sec && timeout->tv_usec <
SELECT_TIMEOUT_MIN_MICRO_SECONDS)
{
timeout->tv_usec = SELECT_TIMEOUT_MIN_MICRO_SECONDS;
}
args = UINT32_TO_STREAM(args, timeout->tv_sec);
args = UINT32_TO_STREAM(args, timeout->tv_usec);
}
// Initiate a HCI command
hci_command_send(HCI_CMND_BSD_SELECT, ptr, SOCKET_SELECT_PARAMS_LEN);
// Since we are in blocking state - wait for event complete
SimpleLinkWaitEvent(HCI_EVNT_SELECT, &tParams);
// Update actually read FD
if (tParams.iStatus >= 0)
{
if (readsds)
{
memcpy(readsds, &tParams.uiRdfd, sizeof(tParams.uiRdfd));
}
if (writesds)
{
memcpy(writesds, &tParams.uiWrfd, sizeof(tParams.uiWrfd));
}
if (exceptsds)
{
memcpy(exceptsds, &tParams.uiExfd, sizeof(tParams.uiExfd));
}
return(tParams.iStatus);
}
else
{
CC3000_EXPORT(errno) = tParams.iStatus;
return(-1);
}
}
//*****************************************************************************
//
//! setsockopt
//!
//! @param[in] sd socket handle
//! @param[in] level defines the protocol level for this option
//! @param[in] optname defines the option name to Interrogate
//! @param[in] optval specifies a value for the option
//! @param[in] optlen specifies the length of the option value
//! @return On success, zero is returned. On error, -1 is returned
//!
//! @brief set socket options
//! This function manipulate the options associated with a socket.
//! Options may exist at multiple protocol levels; they are always
//! present at the uppermost socket level.
//! When manipulating socket options the level at which the option
//! resides and the name of the option must be specified.
//! To manipulate options at the socket level, level is specified as
//! SOL_SOCKET. To manipulate options at any other level the protocol
//! number of the appropriate protocol controlling the option is
//! supplied. For example, to indicate that an option is to be
//! interpreted by the TCP protocol, level should be set to the
//! protocol number of TCP;
//! The parameters optval and optlen are used to access optval -
//! use for setsockopt(). For getsockopt() they identify a buffer
//! in which the value for the requested option(s) are to
//! be returned. For getsockopt(), optlen is a value-result
//! parameter, initially containing the size of the buffer
//! pointed to by option_value, and modified on return to
//! indicate the actual size of the value returned. If no option
//! value is to be supplied or returned, option_value may be NULL.
//!
//! @Note On this version the following two socket options are enabled:
//! The only protocol level supported in this version
//! is SOL_SOCKET (level).
//! 1. SOCKOPT_RECV_TIMEOUT (optname)
//! SOCKOPT_RECV_TIMEOUT configures recv and recvfrom timeout
//! in milliseconds.
//! In that case optval should be pointer to UINT32.
//! 2. SOCKOPT_NONBLOCK (optname). sets the socket non-blocking mode on
//! or off.
//! In that case optval should be SOCK_ON or SOCK_OFF (optval).
//!
//! @sa getsockopt
//
//*****************************************************************************
#ifndef CC3000_TINY_DRIVER
INT16 CC3000_EXPORT(setsockopt)(INT32 sd, INT32 level, INT32 optname, const void *optval,
socklen_t optlen)
{
INT32 ret;
UINT8 *ptr, *args;
ptr = tSLInformation.pucTxCommandBuffer;
args = (ptr + HEADERS_SIZE_CMD);
// Fill in temporary command buffer
args = UINT32_TO_STREAM(args, sd);
args = UINT32_TO_STREAM(args, level);
args = UINT32_TO_STREAM(args, optname);
args = UINT32_TO_STREAM(args, 0x00000008);
args = UINT32_TO_STREAM(args, optlen);
ARRAY_TO_STREAM(args, ((UINT8 *)optval), optlen);
// Initiate a HCI command
hci_command_send(HCI_CMND_SETSOCKOPT,
ptr, SOCKET_SET_SOCK_OPT_PARAMS_LEN + optlen);
// Since we are in blocking state - wait for event complete
SimpleLinkWaitEvent(HCI_CMND_SETSOCKOPT, &ret);
if (ret >= 0)
{
return (0);
}
else
{
CC3000_EXPORT(errno) = ret;
return ret;
}
}
#endif
//*****************************************************************************
//
//! getsockopt
//!
//! @param[in] sd socket handle
//! @param[in] level defines the protocol level for this option
//! @param[in] optname defines the option name to Interrogate
//! @param[out] optval specifies a value for the option
//! @param[out] optlen specifies the length of the option value
//! @return On success, zero is returned. On error, -1 is returned
//!
//! @brief set socket options
//! This function manipulate the options associated with a socket.
//! Options may exist at multiple protocol levels; they are always
//! present at the uppermost socket level.
//! When manipulating socket options the level at which the option
//! resides and the name of the option must be specified.
//! To manipulate options at the socket level, level is specified as
//! SOL_SOCKET. To manipulate options at any other level the protocol
//! number of the appropriate protocol controlling the option is
//! supplied. For example, to indicate that an option is to be
//! interpreted by the TCP protocol, level should be set to the
//! protocol number of TCP;
//! The parameters optval and optlen are used to access optval -
//! use for setsockopt(). For getsockopt() they identify a buffer
//! in which the value for the requested option(s) are to
//! be returned. For getsockopt(), optlen is a value-result
//! parameter, initially containing the size of the buffer
//! pointed to by option_value, and modified on return to
//! indicate the actual size of the value returned. If no option
//! value is to be supplied or returned, option_value may be NULL.
//!
//! @Note On this version the following two socket options are enabled:
//! The only protocol level supported in this version
//! is SOL_SOCKET (level).
//! 1. SOCKOPT_RECV_TIMEOUT (optname)
//! SOCKOPT_RECV_TIMEOUT configures recv and recvfrom timeout
//! in milliseconds.
//! In that case optval should be pointer to UINT32.
//! 2. SOCKOPT_NONBLOCK (optname). sets the socket non-blocking mode on
//! or off.
//! In that case optval should be SOCK_ON or SOCK_OFF (optval).
//!
//! @sa setsockopt
//
//*****************************************************************************
INT16 CC3000_EXPORT(getsockopt) (INT32 sd, INT32 level, INT32 optname, void *optval, socklen_t *optlen)
{
UINT8 *ptr, *args;
tBsdGetSockOptReturnParams tRetParams;
ptr = tSLInformation.pucTxCommandBuffer;
args = (ptr + HEADERS_SIZE_CMD);
// Fill in temporary command buffer
args = UINT32_TO_STREAM(args, sd);
args = UINT32_TO_STREAM(args, level);
args = UINT32_TO_STREAM(args, optname);
// Initiate a HCI command
hci_command_send(HCI_CMND_GETSOCKOPT,
ptr, SOCKET_GET_SOCK_OPT_PARAMS_LEN);
// Since we are in blocking state - wait for event complete
SimpleLinkWaitEvent(HCI_CMND_GETSOCKOPT, &tRetParams);
if (((INT8)tRetParams.iStatus) >= 0)
{
*optlen = 4;
memcpy(optval, tRetParams.ucOptValue, 4);
return (0);
}
else
{
CC3000_EXPORT(errno) = tRetParams.iStatus;
return CC3000_EXPORT(errno);
}
}
//*****************************************************************************
//
//! simple_link_recv
//!
//! @param sd socket handle
//! @param buf read buffer
//! @param len buffer length
//! @param flags indicates blocking or non-blocking operation
//! @param from pointer to an address structure indicating source address
//! @param fromlen source address structure size
//!
//! @return Return the number of bytes received, or -1 if an error
//! occurred
//!
//! @brief Read data from socket
//! Return the length of the message on successful completion.
//! If a message is too long to fit in the supplied buffer,
//! excess bytes may be discarded depending on the type of
//! socket the message is received from
//
//*****************************************************************************
static INT16 simple_link_recv(INT32 sd, void *buf, INT32 len, INT32 flags, sockaddr *from,
socklen_t *fromlen, INT32 opcode)
{
UINT8 *ptr, *args;
tBsdReadReturnParams tSocketReadEvent;
ptr = tSLInformation.pucTxCommandBuffer;
args = (ptr + HEADERS_SIZE_CMD);
// Fill in HCI packet structure
args = UINT32_TO_STREAM(args, sd);
args = UINT32_TO_STREAM(args, len);
args = UINT32_TO_STREAM(args, flags);
// Generate the read command, and wait for the
hci_command_send(opcode, ptr, SOCKET_RECV_FROM_PARAMS_LEN);
// Since we are in blocking state - wait for event complete
SimpleLinkWaitEvent(opcode, &tSocketReadEvent);
// In case the number of bytes is more then zero - read data
if (tSocketReadEvent.iNumberOfBytes > 0)
{
// Wait for the data in a synchronous way. Here we assume that the bug is
// big enough to store also parameters of receive from too....
SimpleLinkWaitData(buf, (UINT8 *)from, (UINT8 *)fromlen);
}
CC3000_EXPORT(errno) = tSocketReadEvent.iNumberOfBytes;
return(tSocketReadEvent.iNumberOfBytes);
}
//*****************************************************************************
//
//! recv
//!
//! @param[in] sd socket handle
//! @param[out] buf Points to the buffer where the message should be stored
//! @param[in] len Specifies the length in bytes of the buffer pointed to
//! by the buffer argument.
//! @param[in] flags Specifies the type of message reception.
//! On this version, this parameter is not supported.
//!
//! @return Return the number of bytes received, or -1 if an error
//! occurred
//!
//! @brief function receives a message from a connection-mode socket
//!
//! @sa recvfrom
//!
//! @Note On this version, only blocking mode is supported.
//
//*****************************************************************************
INT16 CC3000_EXPORT(recv)(INT32 sd, void *buf, INT32 len, INT32 flags)
{
return(simple_link_recv(sd, buf, len, flags, NULL, NULL, HCI_CMND_RECV));
}
//*****************************************************************************
//
//! recvfrom
//!
//! @param[in] sd socket handle
//! @param[out] buf Points to the buffer where the message should be stored
//! @param[in] len Specifies the length in bytes of the buffer pointed to
//! by the buffer argument.
//! @param[in] flags Specifies the type of message reception.
//! On this version, this parameter is not supported.
//! @param[in] from pointer to an address structure indicating the source
//! address: sockaddr. On this version only AF_INET is
//! supported.
//! @param[in] fromlen source address tructure size
//!
//! @return Return the number of bytes received, or -1 if an error
//! occurred
//!
//! @brief read data from socket
//! function receives a message from a connection-mode or
//! connectionless-mode socket. Note that raw sockets are not
//! supported.
//!
//! @sa recv
//!
//! @Note On this version, only blocking mode is supported.
//
//*****************************************************************************
INT16 CC3000_EXPORT(recvfrom)(INT32 sd, void *buf, INT32 len, INT32 flags, sockaddr *from,
socklen_t *fromlen)
{
return(simple_link_recv(sd, buf, len, flags, from, fromlen,
HCI_CMND_RECVFROM));
}
//*****************************************************************************
//
//! simple_link_send
//!
//! @param sd socket handle
//! @param buf write buffer
//! @param len buffer length
//! @param flags On this version, this parameter is not supported
//! @param to pointer to an address structure indicating destination
//! address
//! @param tolen destination address structure size
//!
//! @return Return the number of bytes transmitted, or -1 if an error
//! occurred, or -2 in case there are no free buffers available
//! (only when SEND_NON_BLOCKING is enabled)
//!
//! @brief This function is used to transmit a message to another
//! socket
//
//*****************************************************************************
static INT16 simple_link_send(INT32 sd, const void *buf, INT32 len, INT32 flags,
const sockaddr *to, INT32 tolen, INT32 opcode)
{
UINT8 uArgSize=0, addrlen;
UINT8 *ptr, *pDataPtr=0, *args;
UINT32 addr_offset=0;
INT16 res;
tBsdReadReturnParams tSocketSendEvent;
// Check the bsd_arguments
if (0 != (res = HostFlowControlConsumeBuff(sd)))
{
return res;
}
//Update the number of sent packets
tSLInformation.NumberOfSentPackets++;
// Allocate a buffer and construct a packet and send it over spi
ptr = tSLInformation.pucTxCommandBuffer;
args = (ptr + HEADERS_SIZE_DATA);
// Update the offset of data and parameters according to the command
switch(opcode)
{
case HCI_CMND_SENDTO:
{
addr_offset = len + sizeof(len) + sizeof(len);
addrlen = 8;
uArgSize = SOCKET_SENDTO_PARAMS_LEN;
pDataPtr = ptr + HEADERS_SIZE_DATA + SOCKET_SENDTO_PARAMS_LEN;
break;
}
case HCI_CMND_SEND:
{
tolen = 0;
to = NULL;
uArgSize = HCI_CMND_SEND_ARG_LENGTH;
pDataPtr = ptr + HEADERS_SIZE_DATA + HCI_CMND_SEND_ARG_LENGTH;
break;
}
default:
{
break;
}
}
// Fill in temporary command buffer
args = UINT32_TO_STREAM(args, sd);
args = UINT32_TO_STREAM(args, uArgSize - sizeof(sd));
args = UINT32_TO_STREAM(args, len);
args = UINT32_TO_STREAM(args, flags);
if (opcode == HCI_CMND_SENDTO)
{
args = UINT32_TO_STREAM(args, addr_offset);
args = UINT32_TO_STREAM(args, addrlen);
}
// Copy the data received from user into the TX Buffer
ARRAY_TO_STREAM(pDataPtr, ((UINT8 *)buf), len);
// In case we are using SendTo, copy the to parameters
if (opcode == HCI_CMND_SENDTO)
{
ARRAY_TO_STREAM(pDataPtr, ((UINT8 *)to), tolen);
}
// Initiate a HCI command
hci_data_send(opcode, ptr, uArgSize, len,(UINT8*)to, tolen);
if (opcode == HCI_CMND_SENDTO)
SimpleLinkWaitEvent(HCI_EVNT_SENDTO, &tSocketSendEvent);
else
SimpleLinkWaitEvent(HCI_EVNT_SEND, &tSocketSendEvent);
return (len);
}
//*****************************************************************************
//
//! send
//!
//! @param sd socket handle
//! @param buf Points to a buffer containing the message to be sent
//! @param len message size in bytes
//! @param flags On this version, this parameter is not supported
//!
//! @return Return the number of bytes transmitted, or -1 if an
//! error occurred
//!
//! @brief Write data to TCP socket
//! This function is used to transmit a message to another
//! socket.
//!
//! @Note On this version, only blocking mode is supported.
//!
//! @sa sendto
//
//*****************************************************************************
INT16 CC3000_EXPORT(send)(INT32 sd, const void *buf, INT32 len, INT32 flags)
{
return(simple_link_send(sd, buf, len, flags, NULL, 0, HCI_CMND_SEND));
}
//*****************************************************************************
//
//! sendto
//!
//! @param sd socket handle
//! @param buf Points to a buffer containing the message to be sent
//! @param len message size in bytes
//! @param flags On this version, this parameter is not supported
//! @param to pointer to an address structure indicating the destination
//! address: sockaddr. On this version only AF_INET is
//! supported.
//! @param tolen destination address structure size
//!
//! @return Return the number of bytes transmitted, or -1 if an
//! error occurred
//!
//! @brief Write data to TCP socket
//! This function is used to transmit a message to another
//! socket.
//!
//! @Note On this version, only blocking mode is supported.
//!
//! @sa send
//
//*****************************************************************************
INT16 CC3000_EXPORT(sendto)(INT32 sd, const void *buf, INT32 len, INT32 flags, const sockaddr *to,
socklen_t tolen)
{
return(simple_link_send(sd, buf, len, flags, to, tolen, HCI_CMND_SENDTO));
}
//*****************************************************************************
//
//! mdnsAdvertiser
//!
//! @param[in] mdnsEnabled flag to enable/disable the mDNS feature
//! @param[in] deviceServiceName Service name as part of the published
//! canonical domain name
//! @param[in] deviceServiceNameLength Length of the service name - up to 32 chars
//!
//!
//! @return On success, zero is returned, return SOC_ERROR if socket was not
//! opened successfully, or if an error occurred.
//!
//! @brief Set CC3000 in mDNS advertiser mode in order to advertise itself.
//
//*****************************************************************************
INT16 CC3000_EXPORT(mdnsAdvertiser)(UINT16 mdnsEnabled, CHAR * deviceServiceName, UINT16 deviceServiceNameLength)
{
INT8 ret;
UINT8 *pTxBuffer, *pArgs;
if (deviceServiceNameLength > MDNS_DEVICE_SERVICE_MAX_LENGTH)
{
return EFAIL;
}
pTxBuffer = tSLInformation.pucTxCommandBuffer;
pArgs = (pTxBuffer + SIMPLE_LINK_HCI_CMND_TRANSPORT_HEADER_SIZE);
// Fill in HCI packet structure
pArgs = UINT32_TO_STREAM(pArgs, mdnsEnabled);
pArgs = UINT32_TO_STREAM(pArgs, 8);
pArgs = UINT32_TO_STREAM(pArgs, deviceServiceNameLength);
ARRAY_TO_STREAM(pArgs, deviceServiceName, deviceServiceNameLength);
// Initiate a HCI command
hci_command_send(HCI_CMND_MDNS_ADVERTISE, pTxBuffer, SOCKET_MDNS_ADVERTISE_PARAMS_LEN + deviceServiceNameLength);
// Since we are in blocking state - wait for event complete
SimpleLinkWaitEvent(HCI_EVNT_MDNS_ADVERTISE, &ret);
return ret;
}
//*****************************************************************************
//
//! getmssvalue
//!
//! @param[in] sd socket descriptor
//!
//! @return On success, returns the MSS value of a TCP connection
//!
//! @brief Returns the MSS value of a TCP connection according to the socket descriptor
//
//*****************************************************************************
UINT16 CC3000_EXPORT(getmssvalue) (INT32 sd)
{
UINT8 *ptr, *args;
UINT16 ret;
ptr = tSLInformation.pucTxCommandBuffer;
args = (ptr + HEADERS_SIZE_CMD);
// Fill in temporary command buffer
args = UINT32_TO_STREAM(args, sd);
// Initiate a HCI command
hci_command_send(HCI_CMND_GETMSSVALUE, ptr, SOCKET_GET_MSS_VALUE_PARAMS_LEN);
// Since we are in blocking state - wait for event complete
SimpleLinkWaitEvent(HCI_EVNT_GETMSSVALUE, &ret);
return ret;
}
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