2 * FreeRTOS+TCP V2.0.11
\r
3 * Copyright (C) 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.
\r
5 * Permission is hereby granted, free of charge, to any person obtaining a copy of
\r
6 * this software and associated documentation files (the "Software"), to deal in
\r
7 * the Software without restriction, including without limitation the rights to
\r
8 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
\r
9 * the Software, and to permit persons to whom the Software is furnished to do so,
\r
10 * subject to the following conditions:
\r
12 * The above copyright notice and this permission notice shall be included in all
\r
13 * copies or substantial portions of the Software.
\r
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
\r
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
\r
17 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
\r
18 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
\r
19 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
\r
20 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
\r
22 * http://aws.amazon.com/freertos
\r
23 * http://www.FreeRTOS.org
\r
26 #ifndef FREERTOS_IP_PRIVATE_H
\r
27 #define FREERTOS_IP_PRIVATE_H
\r
33 /* Application level configuration options. */
\r
34 #include "FreeRTOSIPConfig.h"
\r
35 #include "FreeRTOSIPConfigDefaults.h"
\r
36 #include "FreeRTOS_Sockets.h"
\r
37 #include "IPTraceMacroDefaults.h"
\r
38 #include "FreeRTOS_Stream_Buffer.h"
\r
39 #if( ipconfigUSE_TCP == 1 )
\r
40 #include "FreeRTOS_TCP_WIN.h"
\r
41 #include "FreeRTOS_TCP_IP.h"
\r
44 #if( ipconfigSOCKET_HAS_USER_SEMAPHORE == 1 )
\r
48 #include "event_groups.h"
\r
50 typedef struct xNetworkAddressingParameters
\r
52 uint32_t ulDefaultIPAddress;
\r
54 uint32_t ulGatewayAddress;
\r
55 uint32_t ulDNSServerAddress;
\r
56 uint32_t ulBroadcastAddress;
\r
57 } NetworkAddressingParameters_t;
\r
59 extern BaseType_t xTCPWindowLoggingLevel;
\r
61 /*-----------------------------------------------------------*/
\r
62 /* Protocol headers. */
\r
63 /*-----------------------------------------------------------*/
\r
65 #include "pack_struct_start.h"
\r
68 MACAddress_t xDestinationAddress; /* 0 + 6 = 6 */
\r
69 MACAddress_t xSourceAddress; /* 6 + 6 = 12 */
\r
70 uint16_t usFrameType; /* 12 + 2 = 14 */
\r
72 #include "pack_struct_end.h"
\r
73 typedef struct xETH_HEADER EthernetHeader_t;
\r
75 #include "pack_struct_start.h"
\r
78 uint16_t usHardwareType; /* 0 + 2 = 2 */
\r
79 uint16_t usProtocolType; /* 2 + 2 = 4 */
\r
80 uint8_t ucHardwareAddressLength; /* 4 + 1 = 5 */
\r
81 uint8_t ucProtocolAddressLength; /* 5 + 1 = 6 */
\r
82 uint16_t usOperation; /* 6 + 2 = 8 */
\r
83 MACAddress_t xSenderHardwareAddress; /* 8 + 6 = 14 */
\r
84 uint8_t ucSenderProtocolAddress[ 4 ]; /* 14 + 4 = 18 */
\r
85 MACAddress_t xTargetHardwareAddress; /* 18 + 6 = 24 */
\r
86 uint32_t ulTargetProtocolAddress; /* 24 + 4 = 28 */
\r
88 #include "pack_struct_end.h"
\r
89 typedef struct xARP_HEADER ARPHeader_t;
\r
91 #include "pack_struct_start.h"
\r
94 uint8_t ucVersionHeaderLength; /* 0 + 1 = 1 */
\r
95 uint8_t ucDifferentiatedServicesCode; /* 1 + 1 = 2 */
\r
96 uint16_t usLength; /* 2 + 2 = 4 */
\r
97 uint16_t usIdentification; /* 4 + 2 = 6 */
\r
98 uint16_t usFragmentOffset; /* 6 + 2 = 8 */
\r
99 uint8_t ucTimeToLive; /* 8 + 1 = 9 */
\r
100 uint8_t ucProtocol; /* 9 + 1 = 10 */
\r
101 uint16_t usHeaderChecksum; /* 10 + 2 = 12 */
\r
102 uint32_t ulSourceIPAddress; /* 12 + 4 = 16 */
\r
103 uint32_t ulDestinationIPAddress; /* 16 + 4 = 20 */
\r
105 #include "pack_struct_end.h"
\r
106 typedef struct xIP_HEADER IPHeader_t;
\r
108 #include "pack_struct_start.h"
\r
109 struct xIGMP_HEADER
\r
111 uint8_t ucVersionType; /* 0 + 1 = 1 */
\r
112 uint8_t ucMaxResponseTime; /* 1 + 1 = 2 */
\r
113 uint16_t usChecksum; /* 2 + 2 = 4 */
\r
114 uint32_t usGroupAddress; /* 4 + 4 = 8 */
\r
116 #include "pack_struct_end.h"
\r
117 typedef struct xIGMP_HEADER IGMPHeader_t;
\r
119 #include "pack_struct_start.h"
\r
120 struct xICMP_HEADER
\r
122 uint8_t ucTypeOfMessage; /* 0 + 1 = 1 */
\r
123 uint8_t ucTypeOfService; /* 1 + 1 = 2 */
\r
124 uint16_t usChecksum; /* 2 + 2 = 4 */
\r
125 uint16_t usIdentifier; /* 4 + 2 = 6 */
\r
126 uint16_t usSequenceNumber; /* 6 + 2 = 8 */
\r
128 #include "pack_struct_end.h"
\r
129 typedef struct xICMP_HEADER ICMPHeader_t;
\r
131 #include "pack_struct_start.h"
\r
134 uint16_t usSourcePort; /* 0 + 2 = 2 */
\r
135 uint16_t usDestinationPort; /* 2 + 2 = 4 */
\r
136 uint16_t usLength; /* 4 + 2 = 6 */
\r
137 uint16_t usChecksum; /* 6 + 2 = 8 */
\r
139 #include "pack_struct_end.h"
\r
140 typedef struct xUDP_HEADER UDPHeader_t;
\r
142 #include "pack_struct_start.h"
\r
145 uint16_t usSourcePort; /* + 2 = 2 */
\r
146 uint16_t usDestinationPort; /* + 2 = 4 */
\r
147 uint32_t ulSequenceNumber; /* + 4 = 8 */
\r
148 uint32_t ulAckNr; /* + 4 = 12 */
\r
149 uint8_t ucTCPOffset; /* + 1 = 13 */
\r
150 uint8_t ucTCPFlags; /* + 1 = 14 */
\r
151 uint16_t usWindow; /* + 2 = 15 */
\r
152 uint16_t usChecksum; /* + 2 = 18 */
\r
153 uint16_t usUrgent; /* + 2 = 20 */
\r
154 #if ipconfigUSE_TCP == 1
\r
155 /* the option data is not a part of the TCP header */
\r
156 uint8_t ucOptdata[ipSIZE_TCP_OPTIONS]; /* + 12 = 32 */
\r
159 #include "pack_struct_end.h"
\r
160 typedef struct xTCP_HEADER TCPHeader_t;
\r
162 #include "pack_struct_start.h"
\r
163 struct xPSEUDO_HEADER
\r
165 uint32_t ulSourceAddress;
\r
166 uint32_t ulDestinationAddress;
\r
168 uint8_t ucProtocol;
\r
169 uint16_t usUDPLength;
\r
171 #include "pack_struct_end.h"
\r
172 typedef struct xPSEUDO_HEADER PseudoHeader_t;
\r
174 /*-----------------------------------------------------------*/
\r
175 /* Nested protocol packets. */
\r
176 /*-----------------------------------------------------------*/
\r
178 #include "pack_struct_start.h"
\r
181 EthernetHeader_t xEthernetHeader; /* 0 + 14 = 14 */
\r
182 ARPHeader_t xARPHeader; /* 14 + 28 = 42 */
\r
184 #include "pack_struct_end.h"
\r
185 typedef struct xARP_PACKET ARPPacket_t;
\r
187 #include "pack_struct_start.h"
\r
190 EthernetHeader_t xEthernetHeader;
\r
191 IPHeader_t xIPHeader;
\r
193 #include "pack_struct_end.h"
\r
194 typedef struct xIP_PACKET IPPacket_t;
\r
196 #include "pack_struct_start.h"
\r
197 struct xICMP_PACKET
\r
199 EthernetHeader_t xEthernetHeader;
\r
200 IPHeader_t xIPHeader;
\r
201 ICMPHeader_t xICMPHeader;
\r
203 #include "pack_struct_end.h"
\r
204 typedef struct xICMP_PACKET ICMPPacket_t;
\r
206 #include "pack_struct_start.h"
\r
209 EthernetHeader_t xEthernetHeader; /* 0 + 14 = 14 */
\r
210 IPHeader_t xIPHeader; /* 14 + 20 = 34 */
\r
211 UDPHeader_t xUDPHeader; /* 34 + 8 = 42 */
\r
213 #include "pack_struct_end.h"
\r
214 typedef struct xUDP_PACKET UDPPacket_t;
\r
216 #include "pack_struct_start.h"
\r
219 EthernetHeader_t xEthernetHeader; /* 0 + 14 = 14 */
\r
220 IPHeader_t xIPHeader; /* 14 + 20 = 34 */
\r
221 TCPHeader_t xTCPHeader; /* 34 + 32 = 66 */
\r
223 #include "pack_struct_end.h"
\r
224 typedef struct xTCP_PACKET TCPPacket_t;
\r
226 typedef union XPROT_PACKET
\r
228 ARPPacket_t xARPPacket;
\r
229 TCPPacket_t xTCPPacket;
\r
230 UDPPacket_t xUDPPacket;
\r
231 ICMPPacket_t xICMPPacket;
\r
232 } ProtocolPacket_t;
\r
235 /* The maximum UDP payload length. */
\r
236 #define ipMAX_UDP_PAYLOAD_LENGTH ( ( ipconfigNETWORK_MTU - ipSIZE_OF_IPv4_HEADER ) - ipSIZE_OF_UDP_HEADER )
\r
240 eReleaseBuffer = 0, /* Processing the frame did not find anything to do - just release the buffer. */
\r
241 eProcessBuffer, /* An Ethernet frame has a valid address - continue process its contents. */
\r
242 eReturnEthernetFrame, /* The Ethernet frame contains an ARP or ICMP packet that can be returned to its source. */
\r
243 eFrameConsumed /* Processing the Ethernet packet contents resulted in the payload being sent to the stack. */
\r
244 } eFrameProcessingResult_t;
\r
249 eNetworkDownEvent, /* 0: The network interface has been lost and/or needs [re]connecting. */
\r
250 eNetworkRxEvent, /* 1: The network interface has queued a received Ethernet frame. */
\r
251 eARPTimerEvent, /* 2: The ARP timer expired. */
\r
252 eStackTxEvent, /* 3: The software stack has queued a packet to transmit. */
\r
253 eDHCPEvent, /* 4: Process the DHCP state machine. */
\r
254 eTCPTimerEvent, /* 5: See if any TCP socket needs attention. */
\r
255 eTCPAcceptEvent, /* 6: Client API FreeRTOS_accept() waiting for client connections. */
\r
256 eTCPNetStat, /* 7: IP-task is asked to produce a netstat listing. */
\r
257 eSocketBindEvent, /* 8: Send a message to the IP-task to bind a socket to a port. */
\r
258 eSocketCloseEvent, /* 9: Send a message to the IP-task to close a socket. */
\r
259 eSocketSelectEvent, /*10: Send a message to the IP-task for select(). */
\r
260 eSocketSignalEvent, /*11: A socket must be signalled. */
\r
263 typedef struct IP_TASK_COMMANDS
\r
265 eIPEvent_t eEventType;
\r
269 #define ipBROADCAST_IP_ADDRESS 0xffffffffUL
\r
271 /* Offset into the Ethernet frame that is used to temporarily store information
\r
272 on the fragmentation status of the packet being sent. The value is important,
\r
273 as it is past the location into which the destination address will get placed. */
\r
274 #define ipFRAGMENTATION_PARAMETERS_OFFSET ( 6 )
\r
275 #define ipSOCKET_OPTIONS_OFFSET ( 6 )
\r
277 /* Only used when outgoing fragmentation is being used (FreeRTOSIPConfig.h
\r
279 #define ipGET_UDP_PAYLOAD_OFFSET_FOR_FRAGMENT( usFragmentOffset ) ( ( ( usFragmentOffset ) == 0 ) ? ipUDP_PAYLOAD_OFFSET_IPv4 : ipIP_PAYLOAD_OFFSET )
\r
281 /* The offset into a UDP packet at which the UDP data (payload) starts. */
\r
282 #define ipUDP_PAYLOAD_OFFSET_IPv4 ( sizeof( UDPPacket_t ) )
\r
284 /* The offset into an IP packet into which the IP data (payload) starts. */
\r
285 #define ipIP_PAYLOAD_OFFSET ( sizeof( IPPacket_t ) )
\r
287 #include "pack_struct_start.h"
\r
288 struct xUDP_IP_FRAGMENT_PARAMETERS
\r
290 uint8_t ucSocketOptions;
\r
291 uint8_t ucPadFor16BitAlignment;
\r
292 uint16_t usFragmentedPacketOffset;
\r
293 uint16_t usFragmentLength;
\r
294 uint16_t usPayloadChecksum;
\r
296 #include "pack_struct_end.h"
\r
297 typedef struct xUDP_IP_FRAGMENT_PARAMETERS IPFragmentParameters_t;
\r
299 #if( ipconfigBYTE_ORDER == pdFREERTOS_LITTLE_ENDIAN )
\r
301 /* Ethernet frame types. */
\r
302 #define ipARP_FRAME_TYPE ( 0x0608U )
\r
303 #define ipIPv4_FRAME_TYPE ( 0x0008U )
\r
305 /* ARP related definitions. */
\r
306 #define ipARP_PROTOCOL_TYPE ( 0x0008U )
\r
307 #define ipARP_HARDWARE_TYPE_ETHERNET ( 0x0100U )
\r
308 #define ipARP_REQUEST ( 0x0100U )
\r
309 #define ipARP_REPLY ( 0x0200U )
\r
313 /* Ethernet frame types. */
\r
314 #define ipARP_FRAME_TYPE ( 0x0806U )
\r
315 #define ipIPv4_FRAME_TYPE ( 0x0800U )
\r
317 /* ARP related definitions. */
\r
318 #define ipARP_PROTOCOL_TYPE ( 0x0800U )
\r
319 #define ipARP_HARDWARE_TYPE_ETHERNET ( 0x0001U )
\r
320 #define ipARP_REQUEST ( 0x0001 )
\r
321 #define ipARP_REPLY ( 0x0002 )
\r
323 #endif /* ipconfigBYTE_ORDER == pdFREERTOS_LITTLE_ENDIAN */
\r
326 /* For convenience, a MAC address of all zeros and another of all 0xffs are
\r
327 defined const for quick reference. */
\r
328 extern const MACAddress_t xBroadcastMACAddress; /* all 0xff's */
\r
329 extern uint16_t usPacketIdentifier;
\r
331 /* Define a default UDP packet header (declared in FreeRTOS_UDP_IP.c) */
\r
332 typedef union xUDPPacketHeader
\r
334 uint8_t ucBytes[24];
\r
335 uint32_t ulWords[6];
\r
336 } UDPPacketHeader_t;
\r
337 extern UDPPacketHeader_t xDefaultPartUDPPacketHeader;
\r
339 /* Structure that stores the netmask, gateway address and DNS server addresses. */
\r
340 extern NetworkAddressingParameters_t xNetworkAddressing;
\r
342 /* Structure that stores the defaults for netmask, gateway address and DNS.
\r
343 These values will be copied to 'xNetworkAddressing' in case DHCP is not used,
\r
344 and also in case DHCP does not lead to a confirmed request. */
\r
345 extern NetworkAddressingParameters_t xDefaultAddressing;
\r
347 /* True when BufferAllocation_1.c was included, false for BufferAllocation_2.c */
\r
348 extern const BaseType_t xBufferAllocFixedSize;
\r
350 /* Defined in FreeRTOS_Sockets.c */
\r
351 #if ( ipconfigUSE_TCP == 1 )
\r
352 extern List_t xBoundTCPSocketsList;
\r
355 /* The local IP address is accessed from within xDefaultPartUDPPacketHeader,
\r
356 rather than duplicated in its own variable. */
\r
357 #define ipLOCAL_IP_ADDRESS_POINTER ( ( uint32_t * ) &( xDefaultPartUDPPacketHeader.ulWords[ 20u / sizeof(uint32_t) ] ) )
\r
359 /* The local MAC address is accessed from within xDefaultPartUDPPacketHeader,
\r
360 rather than duplicated in its own variable. */
\r
361 #define ipLOCAL_MAC_ADDRESS ( &xDefaultPartUDPPacketHeader.ucBytes[0] )
\r
363 /* ICMP packets are sent using the same function as UDP packets. The port
\r
364 number is used to distinguish between the two, as 0 is an invalid UDP port. */
\r
365 #define ipPACKET_CONTAINS_ICMP_DATA ( 0 )
\r
367 /* For now, the lower 8 bits in 'xEventBits' will be reserved for the above
\r
369 #define SOCKET_EVENT_BIT_COUNT 8
\r
371 #define vSetField16( pxBase, xType, xField, usValue ) \
\r
373 ( ( uint8_t* )( pxBase ) ) [ offsetof( xType, xField ) + 0 ] = ( uint8_t ) ( ( usValue ) >> 8 ); \
\r
374 ( ( uint8_t* )( pxBase ) ) [ offsetof( xType, xField ) + 1 ] = ( uint8_t ) ( ( usValue ) & 0xff ); \
\r
377 #define vSetField32( pxBase, xType, xField, ulValue ) \
\r
379 ( (uint8_t*)( pxBase ) ) [ offsetof( xType, xField ) + 0 ] = ( uint8_t ) ( ( ulValue ) >> 24 ); \
\r
380 ( (uint8_t*)( pxBase ) ) [ offsetof( xType, xField ) + 1 ] = ( uint8_t ) ( ( ( ulValue ) >> 16 ) & 0xff ); \
\r
381 ( (uint8_t*)( pxBase ) ) [ offsetof( xType, xField ) + 2 ] = ( uint8_t ) ( ( ( ulValue ) >> 8 ) & 0xff ); \
\r
382 ( (uint8_t*)( pxBase ) ) [ offsetof( xType, xField ) + 3 ] = ( uint8_t ) ( ( ulValue ) & 0xff ); \
\r
385 #define vFlip_16( left, right ) \
\r
387 uint16_t tmp = (left); \
\r
388 (left) = (right); \
\r
392 #define vFlip_32( left, right ) \
\r
394 uint32_t tmp = (left); \
\r
395 (left) = (right); \
\r
400 #define ARRAY_SIZE(x) (BaseType_t)(sizeof(x)/sizeof(x)[0])
\r
404 * A version of FreeRTOS_GetReleaseNetworkBuffer() that can be called from an
\r
405 * interrupt. If a non zero value is returned, then the calling ISR should
\r
406 * perform a context switch before exiting the ISR.
\r
408 BaseType_t FreeRTOS_ReleaseFreeNetworkBufferFromISR( void );
\r
411 * Create a message that contains a command to initialise the network interface.
\r
412 * This is used during initialisation, and at any time the network interface
\r
413 * goes down thereafter. The network interface hardware driver is responsible
\r
414 * for sending the message that contains the network interface down command/
\r
417 * Only use the FreeRTOS_NetworkDownFromISR() version if the function is to be
\r
418 * called from an interrupt service routine. If FreeRTOS_NetworkDownFromISR()
\r
419 * returns a non-zero value then a context switch should be performed ebfore
\r
420 * the interrupt is exited.
\r
422 void FreeRTOS_NetworkDown( void );
\r
423 BaseType_t FreeRTOS_NetworkDownFromISR( void );
\r
426 * Processes incoming ARP packets.
\r
428 eFrameProcessingResult_t eARPProcessPacket( ARPPacket_t * const pxARPFrame );
\r
431 * Inspect an Ethernet frame to see if it contains data that the stack needs to
\r
432 * process. eProcessBuffer is returned if the frame should be processed by the
\r
433 * stack. eReleaseBuffer is returned if the frame should be discarded.
\r
435 eFrameProcessingResult_t eConsiderFrameForProcessing( const uint8_t * const pucEthernetBuffer );
\r
438 * Return the checksum generated over xDataLengthBytes from pucNextData.
\r
440 uint16_t usGenerateChecksum( uint32_t ulSum, const uint8_t * pucNextData, size_t uxDataLengthBytes );
\r
442 /* Socket related private functions. */
\r
445 * The caller must ensure that pxNetworkBuffer->xDataLength is the UDP packet
\r
446 * payload size (excluding packet headers) and that the packet in pucEthernetBuffer
\r
447 * is at least the size of UDPPacket_t.
\r
449 BaseType_t xProcessReceivedUDPPacket( NetworkBufferDescriptor_t *pxNetworkBuffer, uint16_t usPort );
\r
452 * Initialize the socket list data structures for TCP and UDP.
\r
454 BaseType_t vNetworkSocketsInit( void );
\r
457 * Returns pdTRUE if the IP task has been created and is initialised. Otherwise
\r
460 BaseType_t xIPIsNetworkTaskReady( void );
\r
462 #if( ipconfigSOCKET_HAS_USER_WAKE_CALLBACK == 1 )
\r
464 typedef void (*SocketWakeupCallback_t)( struct XSOCKET * pxSocket );
\r
467 #if( ipconfigUSE_TCP == 1 )
\r
470 * Actually a user thing, but because xBoundTCPSocketsList, let it do by the
\r
473 void vTCPNetStat( void );
\r
476 * At least one socket needs to check for timeouts
\r
478 TickType_t xTCPTimerCheck( BaseType_t xWillSleep );
\r
480 /* Every TCP socket has a buffer space just big enough to store
\r
481 the last TCP header received.
\r
482 As a reference of this field may be passed to DMA, force the
\r
483 alignment to 8 bytes. */
\r
488 /* Increase the alignment of this union by adding a 64-bit variable. */
\r
489 uint64_t ullAlignmentWord;
\r
493 /* The next field only serves to give 'ucLastPacket' a correct
\r
494 alignment of 8 + 2. See comments in FreeRTOS_IP.h */
\r
495 uint8_t ucFillPacket[ ipconfigPACKET_FILLER_SIZE ];
\r
496 uint8_t ucLastPacket[ sizeof( TCPPacket_t ) ];
\r
501 * Note that the values of all short and long integers in these structs
\r
502 * are being stored in the native-endian way
\r
503 * Translation should take place when accessing any structure which defines
\r
504 * network packets, such as IPHeader_t and TCPHeader_t
\r
506 typedef struct TCPSOCKET
\r
508 uint32_t ulRemoteIP; /* IP address of remote machine */
\r
509 uint16_t usRemotePort; /* Port on remote machine */
\r
511 /* Most compilers do like bit-flags */
\r
513 bMssChange : 1, /* This socket has seen a change in MSS */
\r
514 bPassAccept : 1, /* when true, this socket may be returned in a call to accept() */
\r
515 bPassQueued : 1, /* when true, this socket is an orphan until it gets connected
\r
516 * Why an orphan? Because it may not be returned in a accept() call until it
\r
517 * gets the state eESTABLISHED */
\r
518 bReuseSocket : 1, /* When a listening socket gets a connection, do not create a new instance but keep on using it */
\r
519 bCloseAfterSend : 1,/* As soon as the last byte has been transmitted, finalise the connection
\r
520 * Useful in e.g. FTP connections, where the last data bytes are sent along with the FIN flag */
\r
521 bUserShutdown : 1, /* User requesting a graceful shutdown */
\r
522 bCloseRequested : 1,/* Request to finalise the connection */
\r
523 bLowWater : 1, /* high-water level has been reached. Cleared as soon as 'rx-count < lo-water' */
\r
524 bWinChange : 1, /* The value of bLowWater has changed, must send a window update */
\r
525 bSendKeepAlive : 1, /* When this flag is true, a TCP keep-alive message must be send */
\r
526 bWaitKeepAlive : 1, /* When this flag is true, a TCP keep-alive reply is expected */
\r
527 bConnPrepared : 1, /* Connecting socket: Message has been prepared */
\r
528 #if( ipconfigSUPPORT_SELECT_FUNCTION == 1 )
\r
529 bConnPassed : 1, /* Connecting socket: Socket has been passed in a successful select() */
\r
530 #endif /* ipconfigSUPPORT_SELECT_FUNCTION */
\r
531 bFinAccepted : 1, /* This socket has received (or sent) a FIN and accepted it */
\r
532 bFinSent : 1, /* We've sent out a FIN */
\r
533 bFinRecv : 1, /* We've received a FIN from our peer */
\r
534 bFinAcked : 1, /* Our FIN packet has been acked */
\r
535 bFinLast : 1, /* The last ACK (after FIN and FIN+ACK) has been sent or will be sent by the peer */
\r
536 bRxStopped : 1, /* Application asked to temporarily stop reception */
\r
537 bMallocError : 1, /* There was an error allocating a stream */
\r
538 bWinScaling : 1; /* A TCP-Window Scaling option was offered and accepted in the SYN phase. */
\r
540 uint32_t ulHighestRxAllowed;
\r
541 /* The highest sequence number that we can receive at any moment */
\r
542 uint16_t usTimeout; /* Time (in ticks) after which this socket needs attention */
\r
543 uint16_t usCurMSS; /* Current Maximum Segment Size */
\r
544 uint16_t usInitMSS; /* Initial maximum segment Size */
\r
545 uint16_t usChildCount; /* In case of a listening socket: number of connections on this port number */
\r
546 uint16_t usBacklog; /* In case of a listening socket: maximum number of concurrent connections on this port number */
\r
547 uint8_t ucRepCount; /* Send repeat count, for retransmissions
\r
548 * This counter is separate from the xmitCount in the
\r
549 * TCP win segments */
\r
550 uint8_t ucTCPState; /* TCP state: see eTCP_STATE */
\r
551 struct XSOCKET *pxPeerSocket; /* for server socket: child, for child socket: parent */
\r
552 #if( ipconfigTCP_KEEP_ALIVE == 1 )
\r
553 uint8_t ucKeepRepCount;
\r
554 TickType_t xLastAliveTime;
\r
555 #endif /* ipconfigTCP_KEEP_ALIVE */
\r
556 #if( ipconfigTCP_HANG_PROTECTION == 1 )
\r
557 TickType_t xLastActTime;
\r
558 #endif /* ipconfigTCP_HANG_PROTECTION */
\r
559 size_t uxLittleSpace;
\r
560 size_t uxEnoughSpace;
\r
561 size_t uxRxStreamSize;
\r
562 size_t uxTxStreamSize;
\r
563 StreamBuffer_t *rxStream;
\r
564 StreamBuffer_t *txStream;
\r
565 #if( ipconfigUSE_TCP_WIN == 1 )
\r
566 NetworkBufferDescriptor_t *pxAckMessage;
\r
567 #endif /* ipconfigUSE_TCP_WIN */
\r
568 /* Buffer space to store the last TCP header received. */
\r
569 LastTCPPacket_t xPacket;
\r
570 uint8_t tcpflags; /* TCP flags */
\r
571 #if( ipconfigUSE_TCP_WIN != 0 )
\r
572 uint8_t ucMyWinScaleFactor;
\r
573 uint8_t ucPeerWinScaleFactor;
\r
575 #if( ipconfigUSE_CALLBACKS == 1 )
\r
576 FOnTCPReceive_t pxHandleReceive; /*
\r
577 * In case of a TCP socket:
\r
578 * typedef void (* FOnTCPReceive_t) (Socket_t xSocket, void *pData, size_t xLength );
\r
580 FOnTCPSent_t pxHandleSent;
\r
581 FOnConnected_t pxHandleConnected; /* Actually type: typedef void (* FOnConnected_t) (Socket_t xSocket, BaseType_t ulConnected ); */
\r
582 #endif /* ipconfigUSE_CALLBACKS */
\r
583 uint32_t ulWindowSize; /* Current Window size advertised by peer */
\r
584 size_t uxRxWinSize; /* Fixed value: size of the TCP reception window */
\r
585 size_t uxTxWinSize; /* Fixed value: size of the TCP transmit window */
\r
587 TCPWindow_t xTCPWindow;
\r
590 #endif /* ipconfigUSE_TCP */
\r
592 typedef struct UDPSOCKET
\r
594 List_t xWaitingPacketsList; /* Incoming packets */
\r
595 #if( ipconfigUDP_MAX_RX_PACKETS > 0 )
\r
596 UBaseType_t uxMaxPackets; /* Protection: limits the number of packets buffered per socket */
\r
597 #endif /* ipconfigUDP_MAX_RX_PACKETS */
\r
598 #if( ipconfigUSE_CALLBACKS == 1 )
\r
599 FOnUDPReceive_t pxHandleReceive; /*
\r
600 * In case of a UDP socket:
\r
601 * typedef void (* FOnUDPReceive_t) (Socket_t xSocket, void *pData, size_t xLength, struct freertos_sockaddr *pxAddr );
\r
603 FOnUDPSent_t pxHandleSent;
\r
604 #endif /* ipconfigUSE_CALLBACKS */
\r
607 typedef enum eSOCKET_EVENT {
\r
608 eSOCKET_RECEIVE = 0x0001,
\r
609 eSOCKET_SEND = 0x0002,
\r
610 eSOCKET_ACCEPT = 0x0004,
\r
611 eSOCKET_CONNECT = 0x0008,
\r
612 eSOCKET_BOUND = 0x0010,
\r
613 eSOCKET_CLOSED = 0x0020,
\r
614 eSOCKET_INTR = 0x0040,
\r
615 eSOCKET_ALL = 0x007F,
\r
618 typedef struct XSOCKET
\r
620 EventBits_t xEventBits;
\r
621 EventGroupHandle_t xEventGroup;
\r
623 ListItem_t xBoundSocketListItem; /* Used to reference the socket from a bound sockets list. */
\r
624 TickType_t xReceiveBlockTime; /* if recv[to] is called while no data is available, wait this amount of time. Unit in clock-ticks */
\r
625 TickType_t xSendBlockTime; /* if send[to] is called while there is not enough space to send, wait this amount of time. Unit in clock-ticks */
\r
627 uint16_t usLocalPort; /* Local port on this machine */
\r
628 uint8_t ucSocketOptions;
\r
629 uint8_t ucProtocol; /* choice of FREERTOS_IPPROTO_UDP/TCP */
\r
630 #if( ipconfigSOCKET_HAS_USER_SEMAPHORE == 1 )
\r
631 SemaphoreHandle_t pxUserSemaphore;
\r
632 #endif /* ipconfigSOCKET_HAS_USER_SEMAPHORE */
\r
633 #if( ipconfigSOCKET_HAS_USER_WAKE_CALLBACK == 1 )
\r
634 SocketWakeupCallback_t pxUserWakeCallback;
\r
635 #endif /* ipconfigSOCKET_HAS_USER_WAKE_CALLBACK */
\r
637 #if( ipconfigSUPPORT_SELECT_FUNCTION == 1 )
\r
638 struct xSOCKET_SET *pxSocketSet;
\r
639 /* User may indicate which bits are interesting for this socket. */
\r
640 EventBits_t xSelectBits;
\r
641 /* These bits indicate the events which have actually occurred.
\r
642 They are maintained by the IP-task */
\r
643 EventBits_t xSocketBits;
\r
644 #endif /* ipconfigSUPPORT_SELECT_FUNCTION */
\r
645 /* TCP/UDP specific fields: */
\r
646 /* Before accessing any member of this structure, it should be confirmed */
\r
647 /* that the protocol corresponds with the type of structure */
\r
651 IPUDPSocket_t xUDP;
\r
652 #if( ipconfigUSE_TCP == 1 )
\r
653 IPTCPSocket_t xTCP;
\r
654 /* Make sure that xTCP is 8-bytes aligned by
\r
655 declaring a 64-bit variable in the same union */
\r
656 uint64_t ullTCPAlignment;
\r
657 #endif /* ipconfigUSE_TCP */
\r
659 } FreeRTOS_Socket_t;
\r
661 #if( ipconfigUSE_TCP == 1 )
\r
663 * Lookup a TCP socket, using a multiple matching: both port numbers and
\r
664 * return IP address.
\r
666 FreeRTOS_Socket_t *pxTCPSocketLookup( uint32_t ulLocalIP, UBaseType_t uxLocalPort, uint32_t ulRemoteIP, UBaseType_t uxRemotePort );
\r
668 #endif /* ipconfigUSE_TCP */
\r
671 * Look up a local socket by finding a match with the local port.
\r
673 FreeRTOS_Socket_t *pxUDPSocketLookup( UBaseType_t uxLocalPort );
\r
676 * Called when the application has generated a UDP packet to send.
\r
678 void vProcessGeneratedUDPPacket( NetworkBufferDescriptor_t * const pxNetworkBuffer );
\r
681 * Calculate the upper-layer checksum
\r
682 * Works both for UDP, ICMP and TCP packages
\r
683 * bOut = true: checksum will be set in outgoing packets
\r
684 * bOut = false: checksum will be calculated for incoming packets
\r
685 * returning 0xffff means: checksum was correct
\r
687 uint16_t usGenerateProtocolChecksum( const uint8_t * const pucEthernetBuffer, size_t uxBufferLength, BaseType_t xOutgoingPacket );
\r
690 * An Ethernet frame has been updated (maybe it was an ARP request or a PING
\r
691 * request?) and is to be sent back to its source.
\r
693 void vReturnEthernetFrame( NetworkBufferDescriptor_t * pxNetworkBuffer, BaseType_t xReleaseAfterSend );
\r
696 * The internal version of bind()
\r
697 * If 'ulInternal' is true, it is called by the driver
\r
698 * The TCP driver needs to bind a socket at the moment a listening socket
\r
699 * creates a new connected socket
\r
701 BaseType_t vSocketBind( FreeRTOS_Socket_t *pxSocket, struct freertos_sockaddr * pxAddress, size_t uxAddressLength, BaseType_t xInternal );
\r
704 * Internal function to add streaming data to a TCP socket. If ulIn == true,
\r
705 * data will be added to the rxStream, otherwise to the tXStream. Normally data
\r
706 * will be written with ulOffset == 0, meaning: at the end of the FIFO. When
\r
707 * packet come in out-of-order, an offset will be used to put it in front and
\r
708 * the head will not change yet.
\r
710 int32_t lTCPAddRxdata(FreeRTOS_Socket_t *pxSocket, size_t uxOffset, const uint8_t *pcData, uint32_t ulByteCount);
\r
713 * Currently called for any important event.
\r
715 void vSocketWakeUpUser( FreeRTOS_Socket_t *pxSocket );
\r
718 * Some helping function, their meaning should be clear
\r
720 static portINLINE uint32_t ulChar2u32 (const uint8_t *apChr);
\r
721 static portINLINE uint32_t ulChar2u32 (const uint8_t *apChr)
\r
723 return ( ( ( uint32_t )apChr[0] ) << 24) |
\r
724 ( ( ( uint32_t )apChr[1] ) << 16) |
\r
725 ( ( ( uint32_t )apChr[2] ) << 8) |
\r
726 ( ( ( uint32_t )apChr[3] ) );
\r
729 static portINLINE uint16_t usChar2u16 (const uint8_t *apChr);
\r
730 static portINLINE uint16_t usChar2u16 (const uint8_t *apChr)
\r
732 return ( uint16_t )
\r
733 ( ( ( ( uint32_t )apChr[0] ) << 8) |
\r
734 ( ( ( uint32_t )apChr[1] ) ) );
\r
737 /* Check a single socket for retransmissions and timeouts */
\r
738 BaseType_t xTCPSocketCheck( FreeRTOS_Socket_t *pxSocket );
\r
740 BaseType_t xTCPCheckNewClient( FreeRTOS_Socket_t *pxSocket );
\r
742 /* Defined in FreeRTOS_Sockets.c
\r
745 void *vSocketClose( FreeRTOS_Socket_t *pxSocket );
\r
748 * Send the event eEvent to the IP task event queue, using a block time of
\r
749 * zero. Return pdPASS if the message was sent successfully, otherwise return
\r
752 BaseType_t xSendEventToIPTask( eIPEvent_t eEvent );
\r
755 * The same as above, but a struct as a parameter, containing:
\r
756 * eIPEvent_t eEventType;
\r
759 BaseType_t xSendEventStructToIPTask( const IPStackEvent_t *pxEvent, TickType_t xTimeout );
\r
762 * Returns a pointer to the original NetworkBuffer from a pointer to a UDP
\r
765 NetworkBufferDescriptor_t *pxUDPPayloadBuffer_to_NetworkBuffer( void *pvBuffer );
\r
767 #if( ipconfigZERO_COPY_TX_DRIVER != 0 )
\r
769 * For the case where the network driver passes a buffer directly to a DMA
\r
770 * descriptor, this function can be used to translate a 'network buffer' to
\r
771 * a 'network buffer descriptor'.
\r
773 NetworkBufferDescriptor_t *pxPacketBuffer_to_NetworkBuffer( const void *pvBuffer );
\r
777 * Internal: Sets a new state for a TCP socket and performs the necessary
\r
778 * actions like calling a OnConnected handler to notify the socket owner.
\r
780 #if( ipconfigUSE_TCP == 1 )
\r
781 void vTCPStateChange( FreeRTOS_Socket_t *pxSocket, enum eTCP_STATE eTCPState );
\r
782 #endif /* ipconfigUSE_TCP */
\r
784 /*_RB_ Should this be part of the public API? */
\r
785 void FreeRTOS_netstat( void );
\r
787 /* Returns pdTRUE is this function is called from the IP-task */
\r
788 BaseType_t xIsCallingFromIPTask( void );
\r
790 #if( ipconfigSUPPORT_SELECT_FUNCTION == 1 )
\r
792 typedef struct xSOCKET_SET
\r
794 EventGroupHandle_t xSelectGroup;
\r
795 BaseType_t bApiCalled; /* True if the API was calling the private vSocketSelect */
\r
796 FreeRTOS_Socket_t *pxSocket;
\r
799 extern void vSocketSelect( SocketSelect_t *pxSocketSelect );
\r
801 #endif /* ipconfigSUPPORT_SELECT_FUNCTION */
\r
803 void vIPSetDHCPTimerEnableState( BaseType_t xEnableState );
\r
804 void vIPReloadDHCPTimer( uint32_t ulLeaseTime );
\r
805 #if( ipconfigDNS_USE_CALLBACKS != 0 )
\r
806 void vIPReloadDNSTimer( uint32_t ulCheckTime );
\r
807 void vIPSetDnsTimerEnableState( BaseType_t xEnableState );
\r
810 /* Send the network-up event and start the ARP timer. */
\r
811 void vIPNetworkUpCalls( void );
\r
817 #endif /* FREERTOS_IP_PRIVATE_H */
\r