Daniele Lacamera / PicoTCP Featured

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

Dependents:   lpc1768-picotcp-demo ZeroMQ_PicoTCP_Publisher_demo TCPSocket_HelloWorld_PicoTCP Pico_TCP_UDP_Test ... more

PicoTCP. Copyright (c) 2013 TASS Belgium NV.

Released under the GNU General Public License, version 2.

Different licensing models may exist, at the sole discretion of the Copyright holders.

Official homepage: http://www.picotcp.com

Bug tracker: https://github.com/tass-belgium/picotcp/issues

Development steps:

  • initial integration with mbed RTOS
  • generic mbed Ethernet driver
  • high performance NXP LPC1768 specific Ethernet driver
  • Multi-threading support for mbed RTOS
  • Berkeley sockets and integration with the New Socket API
  • Fork of the apps running on top of the New Socket API
  • Scheduling optimizations
  • Debugging/benchmarking/testing

Demo application (measuring TCP sender performance):

Import programlpc1768-picotcp-demo

A PicoTCP demo app testing the ethernet throughput on the lpc1768 mbed board.

Last commit 17 May 2013 by TASS Belgium

modules/pico_dhcp_common.c@3:b4047e8a0123, 2013-05-24 (annotated)

Committer:
daniele
Date:
Fri May 24 15:25:25 2013 +0000
Revision:
3:b4047e8a0123
Child:
51:ab4529a384a6
Updated from main repo + fixed Mutexes;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
daniele 3:b4047e8a0123 1 /*********************************************************************
daniele 3:b4047e8a0123 2 PicoTCP. Copyright (c) 2012 TASS Belgium NV. Some rights reserved.
daniele 3:b4047e8a0123 3 See LICENSE and COPYING for usage.
daniele 3:b4047e8a0123 4
daniele 3:b4047e8a0123 5 .
daniele 3:b4047e8a0123 6
daniele 3:b4047e8a0123 7 Authors: Frederik Van Slycken
daniele 3:b4047e8a0123 8 *********************************************************************/
daniele 3:b4047e8a0123 9
daniele 3:b4047e8a0123 10 #include "pico_config.h"
daniele 3:b4047e8a0123 11 #include "pico_stack.h"
daniele 3:b4047e8a0123 12 #include "pico_dhcp_common.h"
daniele 3:b4047e8a0123 13
daniele 3:b4047e8a0123 14 #if defined (PICO_SUPPORT_DHCPC) || defined (PICO_SUPPORT_DHCPD)
daniele 3:b4047e8a0123 15 //this function should only be used after you checked if the options are valid! otherwise it could read from bad memory!
daniele 3:b4047e8a0123 16 uint8_t dhcp_get_next_option(uint8_t *begin, uint8_t *data, int *len, uint8_t **nextopt)
daniele 3:b4047e8a0123 17 {
daniele 3:b4047e8a0123 18 uint8_t *p;
daniele 3:b4047e8a0123 19 uint8_t type;
daniele 3:b4047e8a0123 20 uint8_t opt_len;
daniele 3:b4047e8a0123 21
daniele 3:b4047e8a0123 22 if (!begin)
daniele 3:b4047e8a0123 23 p = *nextopt;
daniele 3:b4047e8a0123 24 else
daniele 3:b4047e8a0123 25 p = begin;
daniele 3:b4047e8a0123 26
daniele 3:b4047e8a0123 27 type = *p;
daniele 3:b4047e8a0123 28 *nextopt = ++p;
daniele 3:b4047e8a0123 29 if ((type == PICO_DHCPOPT_END) || (type == PICO_DHCPOPT_PAD)) {
daniele 3:b4047e8a0123 30 memset(data, 0, *len);
daniele 3:b4047e8a0123 31 len = 0;
daniele 3:b4047e8a0123 32 return type;
daniele 3:b4047e8a0123 33 }
daniele 3:b4047e8a0123 34 opt_len = *p;
daniele 3:b4047e8a0123 35 p++;
daniele 3:b4047e8a0123 36 if (*len > opt_len)
daniele 3:b4047e8a0123 37 *len = opt_len;
daniele 3:b4047e8a0123 38 memcpy(data, p, *len);
daniele 3:b4047e8a0123 39 *nextopt = p + opt_len;
daniele 3:b4047e8a0123 40 return type;
daniele 3:b4047e8a0123 41 }
daniele 3:b4047e8a0123 42
daniele 3:b4047e8a0123 43 int is_options_valid(uint8_t *opt_buffer, int len)
daniele 3:b4047e8a0123 44 {
daniele 3:b4047e8a0123 45 uint8_t *p = opt_buffer;
daniele 3:b4047e8a0123 46 while (len > 0) {
daniele 3:b4047e8a0123 47 if (*p == PICO_DHCPOPT_END)
daniele 3:b4047e8a0123 48 return 1;
daniele 3:b4047e8a0123 49 else if (*p == PICO_DHCPOPT_PAD) {
daniele 3:b4047e8a0123 50 p++;
daniele 3:b4047e8a0123 51 len--;
daniele 3:b4047e8a0123 52 } else {
daniele 3:b4047e8a0123 53 uint8_t opt_len;
daniele 3:b4047e8a0123 54 p++;
daniele 3:b4047e8a0123 55 len--;
daniele 3:b4047e8a0123 56 if(len > 0) {
daniele 3:b4047e8a0123 57 opt_len = *p;
daniele 3:b4047e8a0123 58 p += opt_len + 1;
daniele 3:b4047e8a0123 59 len -= opt_len;
daniele 3:b4047e8a0123 60 }else
daniele 3:b4047e8a0123 61 return 0;
daniele 3:b4047e8a0123 62 }
daniele 3:b4047e8a0123 63 }
daniele 3:b4047e8a0123 64 return 0;
daniele 3:b4047e8a0123 65 }
daniele 3:b4047e8a0123 66
daniele 3:b4047e8a0123 67 #endif