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@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_dhcp_common.c@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 Authors: Frederik Van Slycken
daniele 0:d7f2341ab245 8 *********************************************************************/
daniele 0:d7f2341ab245 9
daniele 0:d7f2341ab245 10 #include "pico_config.h"
daniele 0:d7f2341ab245 11 #include "pico_stack.h"
daniele 0:d7f2341ab245 12 #include "pico_dhcp_common.h"
daniele 0:d7f2341ab245 13
daniele 0:d7f2341ab245 14 #if defined (PICO_SUPPORT_DHCPC) || defined (PICO_SUPPORT_DHCPD)
daniele 0:d7f2341ab245 15 //this function should only be used after you checked if the options are valid! otherwise it could read from bad memory!
daniele 0:d7f2341ab245 16 uint8_t dhcp_get_next_option(uint8_t *begin, uint8_t *data, int *len, uint8_t **nextopt)
daniele 0:d7f2341ab245 17 {
daniele 0:d7f2341ab245 18 uint8_t *p;
daniele 0:d7f2341ab245 19 uint8_t type;
daniele 0:d7f2341ab245 20 uint8_t opt_len;
daniele 0:d7f2341ab245 21
daniele 0:d7f2341ab245 22 if (!begin)
daniele 0:d7f2341ab245 23 p = *nextopt;
daniele 0:d7f2341ab245 24 else
daniele 0:d7f2341ab245 25 p = begin;
daniele 0:d7f2341ab245 26
daniele 0:d7f2341ab245 27 type = *p;
daniele 0:d7f2341ab245 28 *nextopt = ++p;
daniele 0:d7f2341ab245 29 if ((type == PICO_DHCPOPT_END) || (type == PICO_DHCPOPT_PAD)) {
daniele 0:d7f2341ab245 30 memset(data, 0, *len);
daniele 0:d7f2341ab245 31 len = 0;
daniele 0:d7f2341ab245 32 return type;
daniele 0:d7f2341ab245 33 }
daniele 0:d7f2341ab245 34 opt_len = *p;
daniele 0:d7f2341ab245 35 p++;
daniele 0:d7f2341ab245 36 if (*len > opt_len)
daniele 0:d7f2341ab245 37 *len = opt_len;
daniele 0:d7f2341ab245 38 memcpy(data, p, *len);
daniele 0:d7f2341ab245 39 *nextopt = p + opt_len;
daniele 0:d7f2341ab245 40 return type;
daniele 0:d7f2341ab245 41 }
daniele 0:d7f2341ab245 42
daniele 0:d7f2341ab245 43 int is_options_valid(uint8_t *opt_buffer, int len)
daniele 0:d7f2341ab245 44 {
daniele 0:d7f2341ab245 45 uint8_t *p = opt_buffer;
daniele 0:d7f2341ab245 46 while (len > 0) {
daniele 0:d7f2341ab245 47 if (*p == PICO_DHCPOPT_END)
daniele 0:d7f2341ab245 48 return 1;
daniele 0:d7f2341ab245 49 else if (*p == PICO_DHCPOPT_PAD) {
daniele 0:d7f2341ab245 50 p++;
daniele 0:d7f2341ab245 51 len--;
daniele 0:d7f2341ab245 52 } else {
daniele 0:d7f2341ab245 53 uint8_t opt_len;
daniele 0:d7f2341ab245 54 p++;
daniele 0:d7f2341ab245 55 len--;
daniele 0:d7f2341ab245 56 if(len > 0) {
daniele 0:d7f2341ab245 57 opt_len = *p;
daniele 0:d7f2341ab245 58 p += opt_len + 1;
daniele 0:d7f2341ab245 59 len -= opt_len;
daniele 0:d7f2341ab245 60 }else
daniele 0:d7f2341ab245 61 return 0;
daniele 0:d7f2341ab245 62 }
daniele 0:d7f2341ab245 63 }
daniele 0:d7f2341ab245 64 return 0;
daniele 0:d7f2341ab245 65 }
daniele 0:d7f2341ab245 66
daniele 0:d7f2341ab245 67 #endif