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 RTOSgeneric mbed Ethernet driverhigh performance NXP LPC1768 specific Ethernet driverMulti-threading support for mbed RTOSBerkeley sockets and integration with the New Socket APIFork of the apps running on top of the New Socket APIScheduling 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.
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?
User | Revision | Line number | New 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 |