Daniele Lacamera / USB_Ethernet

CDC/ECM driver for mbed, based on USBDevice by mbed-official. Uses PicoTCP to access Ethernet USB device. License: GPLv2

Dependents:   USBEthernet_TEST

Fork of USB_Ethernet by Daniele Lacamera

modules/pico_tcp.h@2:540f6e142d59, 2013-08-03 (annotated)

Committer:
daniele
Date:
Sat Aug 03 13:16:14 2013 +0000
Revision:
2:540f6e142d59
Moved to single package

Who changed what in which revision?

UserRevisionLine numberNew contents of line
daniele 2:540f6e142d59 1 /*********************************************************************
daniele 2:540f6e142d59 2 PicoTCP. Copyright (c) 2012 TASS Belgium NV. Some rights reserved.
daniele 2:540f6e142d59 3 See LICENSE and COPYING for usage.
daniele 2:540f6e142d59 4
daniele 2:540f6e142d59 5 .
daniele 2:540f6e142d59 6
daniele 2:540f6e142d59 7 *********************************************************************/
daniele 2:540f6e142d59 8 #ifndef _INCLUDE_PICO_TCP
daniele 2:540f6e142d59 9 #define _INCLUDE_PICO_TCP
daniele 2:540f6e142d59 10 #include "pico_addressing.h"
daniele 2:540f6e142d59 11 #include "pico_protocol.h"
daniele 2:540f6e142d59 12 #include "pico_socket.h"
daniele 2:540f6e142d59 13
daniele 2:540f6e142d59 14 extern struct pico_protocol pico_proto_tcp;
daniele 2:540f6e142d59 15
daniele 2:540f6e142d59 16 struct __attribute__((packed)) pico_tcp_hdr {
daniele 2:540f6e142d59 17 struct pico_trans trans;
daniele 2:540f6e142d59 18 uint32_t seq;
daniele 2:540f6e142d59 19 uint32_t ack;
daniele 2:540f6e142d59 20 uint8_t len;
daniele 2:540f6e142d59 21 uint8_t flags;
daniele 2:540f6e142d59 22 uint16_t rwnd;
daniele 2:540f6e142d59 23 uint16_t crc;
daniele 2:540f6e142d59 24 uint16_t urgent;
daniele 2:540f6e142d59 25 };
daniele 2:540f6e142d59 26
daniele 2:540f6e142d59 27 struct __attribute__((packed)) tcp_pseudo_hdr_ipv4
daniele 2:540f6e142d59 28 {
daniele 2:540f6e142d59 29 struct pico_ip4 src;
daniele 2:540f6e142d59 30 struct pico_ip4 dst;
daniele 2:540f6e142d59 31 uint16_t tcp_len;
daniele 2:540f6e142d59 32 uint8_t res;
daniele 2:540f6e142d59 33 uint8_t proto;
daniele 2:540f6e142d59 34 };
daniele 2:540f6e142d59 35
daniele 2:540f6e142d59 36 #define PICO_TCPHDR_SIZE 20
daniele 2:540f6e142d59 37 #define PICO_SIZE_TCPOPT_SYN 20
daniele 2:540f6e142d59 38 #define PICO_SIZE_TCPHDR (sizeof(struct pico_tcp_hdr))
daniele 2:540f6e142d59 39
daniele 2:540f6e142d59 40 #define PICO_TCP_DEFAULT_MSS 1444
daniele 2:540f6e142d59 41
daniele 2:540f6e142d59 42
daniele 2:540f6e142d59 43
daniele 2:540f6e142d59 44 /* TCP options */
daniele 2:540f6e142d59 45 #define PICO_TCP_OPTION_END 0x00
daniele 2:540f6e142d59 46 #define PICO_TCPOPTLEN_END 1
daniele 2:540f6e142d59 47 #define PICO_TCP_OPTION_NOOP 0x01
daniele 2:540f6e142d59 48 #define PICO_TCPOPTLEN_NOOP 1
daniele 2:540f6e142d59 49 #define PICO_TCP_OPTION_MSS 0x02
daniele 2:540f6e142d59 50 #define PICO_TCPOPTLEN_MSS 4
daniele 2:540f6e142d59 51 #define PICO_TCP_OPTION_WS 0x03
daniele 2:540f6e142d59 52 #define PICO_TCPOPTLEN_WS 3
daniele 2:540f6e142d59 53 #define PICO_TCP_OPTION_SACK_OK 0x04
daniele 2:540f6e142d59 54 #define PICO_TCPOPTLEN_SACK_OK 2
daniele 2:540f6e142d59 55 #define PICO_TCP_OPTION_SACK 0x05
daniele 2:540f6e142d59 56 #define PICO_TCPOPTLEN_SACK 2 /* Plus the block */
daniele 2:540f6e142d59 57 #define PICO_TCP_OPTION_TIMESTAMP 0x08
daniele 2:540f6e142d59 58 #define PICO_TCPOPTLEN_TIMESTAMP 10
daniele 2:540f6e142d59 59
daniele 2:540f6e142d59 60 /* TCP flags */
daniele 2:540f6e142d59 61 #define PICO_TCP_FIN 0x01
daniele 2:540f6e142d59 62 #define PICO_TCP_SYN 0x02
daniele 2:540f6e142d59 63 #define PICO_TCP_RST 0x04
daniele 2:540f6e142d59 64 #define PICO_TCP_PSH 0x08
daniele 2:540f6e142d59 65 #define PICO_TCP_ACK 0x10
daniele 2:540f6e142d59 66 #define PICO_TCP_URG 0x20
daniele 2:540f6e142d59 67 #define PICO_TCP_ECN 0x40
daniele 2:540f6e142d59 68 #define PICO_TCP_CWR 0x80
daniele 2:540f6e142d59 69
daniele 2:540f6e142d59 70
daniele 2:540f6e142d59 71
daniele 2:540f6e142d59 72 struct __attribute__((packed)) pico_tcp_option
daniele 2:540f6e142d59 73 {
daniele 2:540f6e142d59 74 uint8_t kind;
daniele 2:540f6e142d59 75 uint8_t len;
daniele 2:540f6e142d59 76 #if 0
daniele 2:540f6e142d59 77 union {
daniele 2:540f6e142d59 78 uint16_t mss;
daniele 2:540f6e142d59 79 uint8_t wshift;
daniele 2:540f6e142d59 80 struct {
daniele 2:540f6e142d59 81 uint32_t tsval;
daniele 2:540f6e142d59 82 uint32_t tsecr;
daniele 2:540f6e142d59 83 } timestamp;
daniele 2:540f6e142d59 84 } data;
daniele 2:540f6e142d59 85 #endif
daniele 2:540f6e142d59 86 };
daniele 2:540f6e142d59 87
daniele 2:540f6e142d59 88 struct pico_socket *pico_tcp_open(void);
daniele 2:540f6e142d59 89 int pico_tcp_read(struct pico_socket *s, void *buf, int len);
daniele 2:540f6e142d59 90 int pico_tcp_initconn(struct pico_socket *s);
daniele 2:540f6e142d59 91 int pico_tcp_input(struct pico_socket *s, struct pico_frame *f);
daniele 2:540f6e142d59 92 uint16_t pico_tcp_checksum_ipv4(struct pico_frame *f);
daniele 2:540f6e142d59 93 int pico_tcp_overhead(struct pico_socket *s);
daniele 2:540f6e142d59 94 int pico_tcp_output(struct pico_socket *s, int loop_score);
daniele 2:540f6e142d59 95 int pico_tcp_queue_in_is_empty(struct pico_socket *s);
daniele 2:540f6e142d59 96 int pico_tcp_reply_rst(struct pico_frame *f);
daniele 2:540f6e142d59 97
daniele 2:540f6e142d59 98 #endif