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Moyka/OS/uc/tcpip/Source/net_udp.h
dimoniche f74fdcceac первый коммит 
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2019-05-27 23:42:26 +03:00

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/*
*********************************************************************************************************
* uC/TCP-IP
* The Embedded TCP/IP Suite
*
* (c) Copyright 2003-2007; Micrium, Inc.; Weston, FL
*
* All rights reserved. Protected by international copyright laws.
*
* uC/TCP-IP is provided in source form for FREE evaluation, for educational
* use or peaceful research. If you plan on using uC/TCP-IP in a commercial
* product you need to contact Micrium to properly license its use in your
* product. We provide ALL the source code for your convenience and to help
* you experience uC/TCP-IP. The fact that the source code is provided does
* NOT mean that you can use it without paying a licensing fee.
*
* Knowledge of the source code may NOT be used to develop a similar product.
*
* Please help us continue to provide the Embedded community with the finest
* software available. Your honesty is greatly appreciated.
*********************************************************************************************************
*/
/*
*********************************************************************************************************
*
* NETWORK UDP LAYER
* (USER DATAGRAM PROTOCOL)
*
* Filename : net_udp.h
* Version : V1.89
* Programmer(s) : ITJ
*********************************************************************************************************
* Note(s) : (1) Supports User Datagram Protocol as described in RFC #768.
*********************************************************************************************************
*/
/*
*********************************************************************************************************
* EXTERNS
*********************************************************************************************************
*/
#ifdef NET_UDP_MODULE
#define NET_UDP_EXT
#else
#define NET_UDP_EXT extern
#endif
/*$PAGE*/
/*
*********************************************************************************************************
* DEFINES
*********************************************************************************************************
*/
/*
*********************************************************************************************************
* UDP APPLICATION-PROTOCOL-INTERFACE SELECT DEFINES
*
* Note(s) : (1) The following UDP values MUST be pre-#define'd in 'net_def.h' PRIOR to 'net_cfg.h' so
* that the developer can configure UDP for the desired application receive demultiplex
* selection (see 'net_def.h UDP LAYER DEFINES Note #1') :
*
* NET_UDP_APP_API_SEL_SOCK 0
* NET_UDP_APP_API_SEL_APP 1
* NET_UDP_APP_API_SEL_SOCK_APP 2
*********************************************************************************************************
*/
/*
*********************************************************************************************************
* UDP HEADER DEFINES
*
* Note(s) : (1) The following UDP value MUST be pre-#define'd in 'net_def.h' PRIOR to 'net_buf.h' so that
* the Network Buffer Module can configure maximum buffer header size (see 'net_def.h UDP
* LAYER DEFINES' & 'net_buf.h NETWORK BUFFER INDEX & SIZE DEFINES Note #1') :
*
* (a) NET_UDP_HDR_SIZE_MAX 8
*********************************************************************************************************
*/
#define NET_UDP_HDR_SIZE 8 /* Sizeof(NET_UDP_HDR) [see 'UDP HEADER']. */
#define NET_UDP_HDR_SIZE_MIN NET_UDP_HDR_SIZE
#if 0 /* See Note #1a. */
#define NET_UDP_HDR_SIZE_MAX NET_UDP_HDR_SIZE
#endif
#define NET_UDP_HDR_SIZE_TOT_MIN (NET_IP_HDR_SIZE_TOT_MIN + NET_UDP_HDR_SIZE_MIN)
#define NET_UDP_HDR_SIZE_TOT_MAX (NET_IP_HDR_SIZE_TOT_MAX + NET_UDP_HDR_SIZE_MAX)
#define NET_UDP_PSEUDO_HDR_SIZE 12 /* Sizeof(NET_UDP_PSEUDO_HDR) [see 'UDP PSEUDO-HEADER'].*/
#define NET_UDP_PORT_NBR_RESERVED NET_PORT_NBR_RESERVED
#define NET_UDP_PORT_NBR_NONE NET_UDP_PORT_NBR_RESERVED
#define NET_UDP_HDR_CHK_SUM_POS_ZERO 0x0000
#define NET_UDP_HDR_CHK_SUM_NEG_ZERO 0xFFFF
#define NET_UDP_HDR_CHK_SUM_NONE NET_UDP_HDR_CHK_SUM_POS_ZERO
/*$PAGE*/
/*
*********************************************************************************************************
* UDP DATA/TOTAL LENGTH & MAXIMUM TRANSMISSION UNIT (MTU) DEFINES
*
* Note(s) : (1) (a) UDP total length #define's (NET_UDP_TOT_LEN) relate to the total size of a complete
* UDP packet, including the packet's UDP header. Note that a complete UDP packet MAY
* be fragmented in multiple Internet Protocol packets.
*
* (b) UDP data length #define's (NET_UDP_DATA_LEN) relate to the data size of a complete
* UDP packet, equal to the total UDP packet length minus its UDP header size. Note
* that a complete UDP packet MAY be fragmented in multiple Internet Protocol packets.
*
* (c) UDP MTU #define's (NET_UDP_MTU) relate to the data size for any single, non-fragmented
* UDP packet, equal to a packet's Internet Protocol MTU minus its UDP header size.
*
* (2) The 'NET_UDP_MTU_NET_RSRC' pre-processor 'else'-conditional code will never be compiled/
* linked since 'net_buf.h' ensures that at least one of the two configuration constants
* (NET_BUF_CFG_NBR_SMALL or NET_BUF_CFG_NBR_LARGE) will be configured with a value greater
* than zero (see 'net_buf.h CONFIGURATION ERRORS'). The 'else'-conditional code is
* included for completeness & as an extra precaution in case 'net_buf.h' is incorrectly
* modified.
*********************************************************************************************************
*/
/* See Notes #1a & #1b. */
#define NET_UDP_DATA_LEN_MIN 0
#define NET_UDP_TOT_LEN_MIN (NET_UDP_HDR_SIZE + NET_UDP_DATA_LEN_MIN)
#define NET_UDP_TOT_LEN_MAX (NET_IP_TOT_LEN_MAX - NET_IP_HDR_SIZE_MIN )
#define NET_UDP_DATA_LEN_MAX (NET_UDP_TOT_LEN_MAX - NET_UDP_HDR_SIZE )
/* See Note #1c. */
#define NET_UDP_MTU_MIN (NET_IP_MTU_MIN - NET_UDP_HDR_SIZE )
#define NET_UDP_MTU_MAX (NET_IP_MTU_MAX - NET_UDP_HDR_SIZE )
#define NET_UDP_MTU NET_UDP_MTU_MIN
#define NET_UDP_MTU_NET_RSRC NET_UDP_MTU_MAX
#if (NET_BUF_CFG_NBR_LARGE > 0)
#if ((NET_BUF_CFG_DATA_SIZE_LARGE - NET_BUF_DATA_SIZE_MIN) < NET_UDP_MTU_NET_RSRC)
#undef NET_UDP_MTU_NET_RSRC
#define NET_UDP_MTU_NET_RSRC (NET_BUF_CFG_DATA_SIZE_LARGE - NET_BUF_DATA_SIZE_MIN)
#endif
#elif (NET_BUF_CFG_NBR_SMALL > 0)
#if ((NET_BUF_CFG_DATA_SIZE_SMALL - NET_BUF_DATA_SIZE_MIN) < NET_UDP_MTU_NET_RSRC)
#undef NET_UDP_MTU_NET_RSRC
#define NET_UDP_MTU_NET_RSRC (NET_BUF_CFG_DATA_SIZE_SMALL - NET_BUF_DATA_SIZE_MIN)
#endif
#else /* See Note #2. */
#error "NET_BUF_CFG_NBR_SMALL illegally #defined in 'net_buf.h' "
#error "NET_BUF_CFG_NBR_LARGE illegally #defined in 'net_buf.h' "
#error " [See 'net_buf.h CONFIGURATION ERRORS']"
#endif
#define NET_UDP_MTU_ACTUAL (DEF_MIN(NET_UDP_MTU, NET_UDP_MTU_NET_RSRC))
/*
*********************************************************************************************************
* UDP FLAG DEFINES
*********************************************************************************************************
*/
/* ------------------ NET UDP FLAGS ------------------- */
#define NET_UDP_FLAG_NONE DEF_BIT_NONE
/* ------------------ UDP TX FLAGS ------------------- */
#define NET_UDP_FLAG_TX_CHK_SUM_DIS DEF_BIT_00 /* DISABLE tx chk sums. */
#define NET_UDP_FLAG_TX_BLOCK DEF_BIT_07
/* ------------------ UDP RX FLAGS ------------------- */
#define NET_UDP_FLAG_RX_CHK_SUM_NONE_DISCARD DEF_BIT_08 /* Discard rx'd NULL chk sum UDP datagrams. */
#define NET_UDP_FLAG_RX_DATA_PEEK DEF_BIT_09
#define NET_UDP_FLAG_RX_BLOCK DEF_BIT_15
/*$PAGE*/
/*
*********************************************************************************************************
* DATA TYPES
*********************************************************************************************************
*/
/*
*********************************************************************************************************
* UDP PORT NUMBER DATA TYPE
*********************************************************************************************************
*/
typedef NET_PORT_NBR NET_UDP_PORT_NBR; /* Defines UDP port nbr size. */
/*$PAGE*/
/*
*********************************************************************************************************
* UDP HEADER
*
* Note(s) : (1) See RFC #768, Section 'Format' for UDP datagram header format.
*********************************************************************************************************
*/
/* ------------------- NET UDP HDR -------------------- */
typedef struct net_udp_hdr {
NET_UDP_PORT_NBR PortSrc; /* UDP datagram src port. */
NET_UDP_PORT_NBR PortDest; /* UDP datagram dest port. */
CPU_INT16U DatagramLen; /* UDP datagram msg len. */
NET_CHK_SUM ChkSum; /* UDP datagram chk sum. */
} NET_UDP_HDR;
/*
*********************************************************************************************************
* UDP PSEUDO-HEADER
*
* Note(s) : (1) See RFC #768, Section 'Fields : Checksum' for UDP datagram pseudo-header format.
*********************************************************************************************************
*/
/* ---------------- NET UDP PSEUDO-HDR ---------------- */
typedef struct net_udp_pseudo_hdr {
NET_IP_ADDR AddrSrc; /* UDP datagram src addr. */
NET_IP_ADDR AddrDest; /* UDP datagram dest addr. */
CPU_INT08U Zero; /* Field MUST be zero'd; i.e. ALL bits clr'd. */
CPU_INT08U Protocol; /* UDP datagram protocol. */
CPU_INT16U DatagramLen; /* UDP datagram tot len. */
} NET_UDP_PSEUDO_HDR;
/*$PAGE*/
/*
*********************************************************************************************************
* GLOBAL VARIABLES
*********************************************************************************************************
*/
#if (NET_CTR_CFG_STAT_EN == DEF_ENABLED) /* ------------------- NET UDP STATS ------------------ */
NET_UDP_EXT NET_CTR NetUDP_StatRxPktCtr; /* Nbr rx'd datagrams. */
NET_UDP_EXT NET_CTR NetUDP_StatRxDatagramProcessedCtr; /* Nbr rx'd datagrams delivered to app layer. */
NET_UDP_EXT NET_CTR NetUDP_StatTxDatagramCtr; /* Nbr tx'd datagrams. */
#endif
#if (NET_CTR_CFG_ERR_EN == DEF_ENABLED) /* ------------------- NET UDP ERRS ------------------- */
NET_UDP_EXT NET_CTR NetUDP_ErrNullPtrCtr; /* Nbr null UDP ptr accesses. */
NET_UDP_EXT NET_CTR NetUDP_ErrInvalidFlagsCtr; /* Nbr reqs for invalid UDP flags. */
NET_UDP_EXT NET_CTR NetUDP_ErrRxHdrDatagramLenCtr; /* Nbr rx'd datagrams with invalid len. */
NET_UDP_EXT NET_CTR NetUDP_ErrRxHdrPortSrcCtr; /* Nbr rx'd datagrams with invalid src port. */
NET_UDP_EXT NET_CTR NetUDP_ErrRxHdrPortDestCtr; /* Nbr rx'd datagrams with invalid dest port. */
NET_UDP_EXT NET_CTR NetUDP_ErrRxHdrChkSumCtr; /* Nbr rx'd datagrams with invalid chk sum. */
NET_UDP_EXT NET_CTR NetUDP_ErrRxDestCtr; /* Nbr rx'd datagrams for unavail dest. */
NET_UDP_EXT NET_CTR NetUDP_ErrRxPktDiscardedCtr; /* Nbr rx'd datagrams discarded. */
NET_UDP_EXT NET_CTR NetUDP_ErrTxPktDiscardedCtr; /* Nbr tx datagrams discarded. */
#if ((NET_ERR_CFG_ARG_CHK_EXT_EN == DEF_ENABLED) || \
(NET_ERR_CFG_ARG_CHK_DBG_EN == DEF_ENABLED))
NET_UDP_EXT NET_CTR NetUDP_ErrTxInvalidSizeCtr; /* Nbr tx reqs with invalid data size. */
#endif
#if (NET_ERR_CFG_ARG_CHK_DBG_EN == DEF_ENABLED)
NET_UDP_EXT NET_CTR NetUDP_ErrRxInvalidBufIxCtr; /* Nbr rx pkts with invalid buf ix. */
NET_UDP_EXT NET_CTR NetUDP_ErrRxHdrDataLenCtr; /* Nbr rx'd datagrams with invalid data len. */
NET_UDP_EXT NET_CTR NetUDP_ErrTxProtocolCtr; /* Nbr tx pkts with unknown/unsupported protocol. */
NET_UDP_EXT NET_CTR NetUDP_ErrTxInvalidBufIxCtr; /* Nbr tx pkts with invalid buf ix. */
NET_UDP_EXT NET_CTR NetUDP_ErrTxHdrDataLenCtr; /* Nbr tx datagrams with invalid protocol/data len. */
NET_UDP_EXT NET_CTR NetUDP_ErrTxHdrPortSrcCtr; /* Nbr tx datagrams with invalid src port. */
NET_UDP_EXT NET_CTR NetUDP_ErrTxHdrPortDestCtr; /* Nbr tx datagrams with invalid dest port. */
NET_UDP_EXT NET_CTR NetUDP_ErrTxHdrFlagsCtr; /* Nbr tx datagrams with invalid flags. */
#endif
#endif
/*$PAGE*/
/*
*********************************************************************************************************
* FUNCTION PROTOTYPES
*********************************************************************************************************
*/
void NetUDP_Init (void);
/* --------------------- RX FNCTS --------------------- */
void NetUDP_Rx (NET_BUF *pbuf,
NET_ERR *perr);
CPU_INT16U NetUDP_RxAppData (NET_BUF *pbuf,
void *pdata_buf,
CPU_INT16U data_buf_len,
CPU_INT16U flags,
void *pip_opts_buf,
CPU_INT08U ip_opts_buf_len,
CPU_INT08U *pip_opts_len,
NET_ERR *perr);
/* --------------------- TX FNCTS --------------------- */
CPU_INT16U NetUDP_TxAppData (void *p_data,
CPU_INT16U data_len,
NET_IP_ADDR src_addr,
NET_UDP_PORT_NBR src_port,
NET_IP_ADDR dest_addr,
NET_UDP_PORT_NBR dest_port,
NET_IP_TOS TOS,
NET_IP_TTL TTL,
CPU_INT16U flags_udp,
CPU_INT16U flags_ip,
void *popts_ip,
NET_ERR *perr);
/*
*********************************************************************************************************
* FUNCTION PROTOTYPES
* DEFINED IN PRODUCT'S net_bsp.c
*********************************************************************************************************
*/
#if ((NET_UDP_CFG_APP_API_SEL == NET_UDP_APP_API_SEL_APP ) || \
(NET_UDP_CFG_APP_API_SEL == NET_UDP_APP_API_SEL_SOCK_APP))
void NetUDP_RxAppDataHandler(NET_BUF *pbuf,
NET_IP_ADDR src_addr,
NET_UDP_PORT_NBR src_port,
NET_IP_ADDR dest_addr,
NET_UDP_PORT_NBR dest_port,
NET_ERR *perr);
#endif
/*$PAGE*/
/*
*********************************************************************************************************
* CONFIGURATION ERRORS
*********************************************************************************************************
*/
#ifndef NET_UDP_CFG_APP_API_SEL
#error "NET_UDP_CFG_APP_API_SEL not #define'd in 'net_cfg.h' "
#error " [MUST be NET_UDP_APP_API_SEL_SOCK ]"
#error " [ || NET_UDP_APP_API_SEL_APP ]"
#error " [ || NET_UDP_APP_API_SEL_SOCK_APP]"
#elif ((NET_UDP_CFG_APP_API_SEL != NET_UDP_APP_API_SEL_SOCK ) && \
(NET_UDP_CFG_APP_API_SEL != NET_UDP_APP_API_SEL_APP ) && \
(NET_UDP_CFG_APP_API_SEL != NET_UDP_APP_API_SEL_SOCK_APP))
#error "NET_UDP_CFG_APP_API_SEL illegally #define'd in 'net_cfg.h' "
#error " [MUST be NET_UDP_APP_API_SEL_SOCK ]"
#error " [ || NET_UDP_APP_API_SEL_APP ]"
#error " [ || NET_UDP_APP_API_SEL_SOCK_APP]"
#endif
#ifndef NET_UDP_CFG_RX_CHK_SUM_DISCARD_EN
#error "NET_UDP_CFG_RX_CHK_SUM_DISCARD_EN not #define'd in 'net_cfg.h'"
#error " [MUST be DEF_DISABLED] "
#error " [ || DEF_ENABLED ] "
#elif ((NET_UDP_CFG_RX_CHK_SUM_DISCARD_EN != DEF_DISABLED) && \
(NET_UDP_CFG_RX_CHK_SUM_DISCARD_EN != DEF_ENABLED ))
#error "NET_UDP_CFG_RX_CHK_SUM_DISCARD_EN illegally #define'd in 'net_cfg.h'"
#error " [MUST be DEF_DISABLED] "
#error " [ || DEF_ENABLED ] "
#endif
#ifndef NET_UDP_CFG_TX_CHK_SUM_EN
#error "NET_UDP_CFG_TX_CHK_SUM_EN not #define'd in 'net_cfg.h'"
#error " [MUST be DEF_DISABLED] "
#error " [ || DEF_ENABLED ] "
#elif ((NET_UDP_CFG_TX_CHK_SUM_EN != DEF_DISABLED) && \
(NET_UDP_CFG_TX_CHK_SUM_EN != DEF_ENABLED ))
#error "NET_UDP_CFG_TX_CHK_SUM_EN illegally #define'd in 'net_cfg.h'"
#error " [MUST be DEF_DISABLED] "
#error " [ || DEF_ENABLED ] "
#endif
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