Daniele Lacamera / PicoTCP-Experimental_CDC_ECM_Branch

Free (GPLv2) TCP/IP stack developed by TASS Belgium

Fork of PicoTCP by Daniele Lacamera

modules/pico_tcp.h@1:cfe8984a32b4, 2013-05-17 (annotated)

Committer:
tass
Date:
Fri May 17 12:09:59 2013 +0000
Revision:
1:cfe8984a32b4
Parent:
libraries/picotcp/modules/pico_tcp.h@0:d7f2341ab245 
Update for smaller SOCKETQ

Who changed what in which revision?

UserRevisionLine numberNew contents of line
daniele 0:d7f2341ab245 1 /*********************************************************************
daniele 0:d7f2341ab245 2 PicoTCP. Copyright (c) 2012 TASS Belgium NV. Some rights reserved.
daniele 0:d7f2341ab245 3 See LICENSE and COPYING for usage.
daniele 0:d7f2341ab245 4
daniele 0:d7f2341ab245 5 .
daniele 0:d7f2341ab245 6
daniele 0:d7f2341ab245 7 *********************************************************************/
daniele 0:d7f2341ab245 8 #ifndef _INCLUDE_PICO_TCP
daniele 0:d7f2341ab245 9 #define _INCLUDE_PICO_TCP
daniele 0:d7f2341ab245 10 #include "pico_addressing.h"
daniele 0:d7f2341ab245 11 #include "pico_protocol.h"
daniele 0:d7f2341ab245 12 #include "pico_socket.h"
daniele 0:d7f2341ab245 13
daniele 0:d7f2341ab245 14 extern struct pico_protocol pico_proto_tcp;
daniele 0:d7f2341ab245 15
daniele 0:d7f2341ab245 16 struct __attribute__((packed)) pico_tcp_hdr {
daniele 0:d7f2341ab245 17 struct pico_trans trans;
daniele 0:d7f2341ab245 18 uint32_t seq;
daniele 0:d7f2341ab245 19 uint32_t ack;
daniele 0:d7f2341ab245 20 uint8_t len;
daniele 0:d7f2341ab245 21 uint8_t flags;
daniele 0:d7f2341ab245 22 uint16_t rwnd;
daniele 0:d7f2341ab245 23 uint16_t crc;
daniele 0:d7f2341ab245 24 uint16_t urgent;
daniele 0:d7f2341ab245 25 };
daniele 0:d7f2341ab245 26
daniele 0:d7f2341ab245 27 struct __attribute__((packed)) tcp_pseudo_hdr_ipv4
daniele 0:d7f2341ab245 28 {
daniele 0:d7f2341ab245 29 struct pico_ip4 src;
daniele 0:d7f2341ab245 30 struct pico_ip4 dst;
daniele 0:d7f2341ab245 31 uint16_t tcp_len;
daniele 0:d7f2341ab245 32 uint8_t res;
daniele 0:d7f2341ab245 33 uint8_t proto;
daniele 0:d7f2341ab245 34 };
daniele 0:d7f2341ab245 35
daniele 0:d7f2341ab245 36 #define PICO_TCPHDR_SIZE 20
daniele 0:d7f2341ab245 37 #define PICO_SIZE_TCPOPT_SYN 20
daniele 0:d7f2341ab245 38 #define PICO_SIZE_TCPHDR (sizeof(struct pico_tcp_hdr))
daniele 0:d7f2341ab245 39
daniele 0:d7f2341ab245 40 #define PICO_TCP_DEFAULT_MSS 1444
daniele 0:d7f2341ab245 41
daniele 0:d7f2341ab245 42
daniele 0:d7f2341ab245 43
daniele 0:d7f2341ab245 44 /* TCP options */
daniele 0:d7f2341ab245 45 #define PICO_TCP_OPTION_END 0x00
daniele 0:d7f2341ab245 46 #define PICO_TCPOPTLEN_END 1
daniele 0:d7f2341ab245 47 #define PICO_TCP_OPTION_NOOP 0x01
daniele 0:d7f2341ab245 48 #define PICO_TCPOPTLEN_NOOP 1
daniele 0:d7f2341ab245 49 #define PICO_TCP_OPTION_MSS 0x02
daniele 0:d7f2341ab245 50 #define PICO_TCPOPTLEN_MSS 4
daniele 0:d7f2341ab245 51 #define PICO_TCP_OPTION_WS 0x03
daniele 0:d7f2341ab245 52 #define PICO_TCPOPTLEN_WS 3
daniele 0:d7f2341ab245 53 #define PICO_TCP_OPTION_SACK_OK 0x04
daniele 0:d7f2341ab245 54 #define PICO_TCPOPTLEN_SACK_OK 2
daniele 0:d7f2341ab245 55 #define PICO_TCP_OPTION_SACK 0x05
daniele 0:d7f2341ab245 56 #define PICO_TCPOPTLEN_SACK 2 /* Plus the block */
daniele 0:d7f2341ab245 57 #define PICO_TCP_OPTION_TIMESTAMP 0x08
daniele 0:d7f2341ab245 58 #define PICO_TCPOPTLEN_TIMESTAMP 10
daniele 0:d7f2341ab245 59
daniele 0:d7f2341ab245 60 /* TCP flags */
daniele 0:d7f2341ab245 61 #define PICO_TCP_FIN 0x01
daniele 0:d7f2341ab245 62 #define PICO_TCP_SYN 0x02
daniele 0:d7f2341ab245 63 #define PICO_TCP_RST 0x04
daniele 0:d7f2341ab245 64 #define PICO_TCP_PSH 0x08
daniele 0:d7f2341ab245 65 #define PICO_TCP_ACK 0x10
daniele 0:d7f2341ab245 66 #define PICO_TCP_URG 0x20
daniele 0:d7f2341ab245 67 #define PICO_TCP_ECN 0x40
daniele 0:d7f2341ab245 68 #define PICO_TCP_CWR 0x80
daniele 0:d7f2341ab245 69
daniele 0:d7f2341ab245 70
daniele 0:d7f2341ab245 71
daniele 0:d7f2341ab245 72 struct __attribute__((packed)) pico_tcp_option
daniele 0:d7f2341ab245 73 {
daniele 0:d7f2341ab245 74 uint8_t kind;
daniele 0:d7f2341ab245 75 uint8_t len;
daniele 0:d7f2341ab245 76 #if 0
daniele 0:d7f2341ab245 77 union {
daniele 0:d7f2341ab245 78 uint16_t mss;
daniele 0:d7f2341ab245 79 uint8_t wshift;
daniele 0:d7f2341ab245 80 struct {
daniele 0:d7f2341ab245 81 uint32_t tsval;
daniele 0:d7f2341ab245 82 uint32_t tsecr;
daniele 0:d7f2341ab245 83 } timestamp;
daniele 0:d7f2341ab245 84 } data;
daniele 0:d7f2341ab245 85 #endif
daniele 0:d7f2341ab245 86 };
daniele 0:d7f2341ab245 87
daniele 0:d7f2341ab245 88 struct pico_socket *pico_tcp_open(void);
daniele 0:d7f2341ab245 89 int pico_tcp_read(struct pico_socket *s, void *buf, int len);
daniele 0:d7f2341ab245 90 int pico_tcp_initconn(struct pico_socket *s);
daniele 0:d7f2341ab245 91 int pico_tcp_input(struct pico_socket *s, struct pico_frame *f);
daniele 0:d7f2341ab245 92 uint16_t pico_tcp_checksum_ipv4(struct pico_frame *f);
daniele 0:d7f2341ab245 93 int pico_tcp_overhead(struct pico_socket *s);
daniele 0:d7f2341ab245 94 int pico_tcp_output(struct pico_socket *s, int loop_score);
daniele 0:d7f2341ab245 95 int pico_tcp_queue_in_is_empty(struct pico_socket *s);
daniele 0:d7f2341ab245 96 int pico_tcp_reply_rst(struct pico_frame *f);
daniele 0:d7f2341ab245 97
daniele 0:d7f2341ab245 98 #endif