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@155:a70f34550c34, 2016-01-28 (annotated)

Committer:
tass
Date:
Thu Jan 28 15:12:00 2016 +0100
Revision:
155:a70f34550c34
Parent:
152:a3d286bf94e5 
Adding TCP flag for FIN.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
tass 68:0847e35d08a6 1 /*********************************************************************
tass 152:a3d286bf94e5 2 PicoTCP. Copyright (c) 2012-2015 Altran Intelligent Systems. Some rights reserved.
TASS Belgium NV 131:4758606c9316 3 See LICENSE and COPYING for usage.
tass 68:0847e35d08a6 4
TASS Belgium NV 131:4758606c9316 5 .
tass 68:0847e35d08a6 6
TASS Belgium NV 131:4758606c9316 7 Authors: Frederik Van Slycken
TASS Belgium NV 131:4758606c9316 8 *********************************************************************/
tass 68:0847e35d08a6 9
tass 68:0847e35d08a6 10 #include "pico_config.h"
tass 68:0847e35d08a6 11 #include "pico_stack.h"
tass 68:0847e35d08a6 12 #include "pico_dhcp_common.h"
tass 68:0847e35d08a6 13
tass 68:0847e35d08a6 14 #if defined (PICO_SUPPORT_DHCPC) || defined (PICO_SUPPORT_DHCPD)
tass 68:0847e35d08a6 15 /* pico_dhcp_are_options_valid needs to be called first to prevent illegal memory access */
tass 68:0847e35d08a6 16 /* The argument pointer is moved forward to the next option */
tass 68:0847e35d08a6 17 struct pico_dhcp_opt *pico_dhcp_next_option(struct pico_dhcp_opt **ptr)
tass 68:0847e35d08a6 18 {
TASS Belgium NV 131:4758606c9316 19 uint8_t **p = (uint8_t **)ptr;
TASS Belgium NV 131:4758606c9316 20 struct pico_dhcp_opt *opt = *ptr;
TASS Belgium NV 131:4758606c9316 21
TASS Belgium NV 131:4758606c9316 22 if (opt->code == PICO_DHCP_OPT_END)
TASS Belgium NV 131:4758606c9316 23 return NULL;
tass 68:0847e35d08a6 24
TASS Belgium NV 131:4758606c9316 25 if (opt->code == PICO_DHCP_OPT_PAD) {
TASS Belgium NV 131:4758606c9316 26 *p += 1;
TASS Belgium NV 131:4758606c9316 27 return *ptr;
TASS Belgium NV 131:4758606c9316 28 }
tass 68:0847e35d08a6 29
TASS Belgium NV 131:4758606c9316 30 *p += (opt->len + 2); /* (len + 2) to account for code and len octet */
TASS Belgium NV 131:4758606c9316 31 return *ptr;
tass 68:0847e35d08a6 32 }
tass 68:0847e35d08a6 33
tass 70:cd218dd180e5 34 uint8_t pico_dhcp_are_options_valid(void *ptr, int32_t len)
tass 68:0847e35d08a6 35 {
TASS Belgium NV 131:4758606c9316 36 uint8_t optlen = 0, *p = ptr;
tass 68:0847e35d08a6 37
TASS Belgium NV 131:4758606c9316 38 while (len > 0) {
TASS Belgium NV 131:4758606c9316 39 switch (*p)
TASS Belgium NV 131:4758606c9316 40 {
TASS Belgium NV 131:4758606c9316 41 case PICO_DHCP_OPT_END:
TASS Belgium NV 131:4758606c9316 42 return 1;
TASS Belgium NV 131:4758606c9316 43
TASS Belgium NV 131:4758606c9316 44 case PICO_DHCP_OPT_PAD:
TASS Belgium NV 131:4758606c9316 45 p++;
TASS Belgium NV 131:4758606c9316 46 len--;
TASS Belgium NV 131:4758606c9316 47 break;
tass 68:0847e35d08a6 48
TASS Belgium NV 131:4758606c9316 49 default:
TASS Belgium NV 131:4758606c9316 50 p++; /* move pointer from code octet to len octet */
tass picotcp@tass.be 149:5f4cb161cec3 51 len--;
tass picotcp@tass.be 149:5f4cb161cec3 52 if ((len <= 0) || (len - (*p + 1) < 0)) /* (*p + 1) to account for len octet */
TASS Belgium NV 131:4758606c9316 53 return 0;
tass 68:0847e35d08a6 54
TASS Belgium NV 131:4758606c9316 55 optlen = *p;
TASS Belgium NV 131:4758606c9316 56 p += optlen + 1;
TASS Belgium NV 131:4758606c9316 57 len -= optlen;
TASS Belgium NV 131:4758606c9316 58 break;
TASS Belgium NV 131:4758606c9316 59 }
tass 68:0847e35d08a6 60 }
TASS Belgium NV 131:4758606c9316 61 return 0;
tass 68:0847e35d08a6 62 }
tass 68:0847e35d08a6 63
tass 70:cd218dd180e5 64 uint8_t pico_dhcp_opt_netmask(void *ptr, struct pico_ip4 *ip)
tass 68:0847e35d08a6 65 {
TASS Belgium NV 131:4758606c9316 66 struct pico_dhcp_opt *opt = (struct pico_dhcp_opt *)ptr;
tass 68:0847e35d08a6 67
TASS Belgium NV 131:4758606c9316 68 /* option: netmask */
TASS Belgium NV 131:4758606c9316 69 opt->code = PICO_DHCP_OPT_NETMASK;
TASS Belgium NV 131:4758606c9316 70 opt->len = PICO_DHCP_OPTLEN_NETMASK - PICO_DHCP_OPTLEN_HDR;
TASS Belgium NV 131:4758606c9316 71 opt->ext.netmask.ip = *ip;
TASS Belgium NV 131:4758606c9316 72 return PICO_DHCP_OPTLEN_NETMASK;
tass 68:0847e35d08a6 73 }
tass 68:0847e35d08a6 74
tass 70:cd218dd180e5 75 uint8_t pico_dhcp_opt_router(void *ptr, struct pico_ip4 *ip)
tass 68:0847e35d08a6 76 {
TASS Belgium NV 131:4758606c9316 77 struct pico_dhcp_opt *opt = (struct pico_dhcp_opt *)ptr;
tass 68:0847e35d08a6 78
TASS Belgium NV 131:4758606c9316 79 /* option: router */
TASS Belgium NV 131:4758606c9316 80 opt->code = PICO_DHCP_OPT_ROUTER;
TASS Belgium NV 131:4758606c9316 81 opt->len = PICO_DHCP_OPTLEN_ROUTER - PICO_DHCP_OPTLEN_HDR;
TASS Belgium NV 131:4758606c9316 82 opt->ext.router.ip = *ip;
TASS Belgium NV 131:4758606c9316 83 return PICO_DHCP_OPTLEN_ROUTER;
tass 68:0847e35d08a6 84 }
tass 68:0847e35d08a6 85
tass 70:cd218dd180e5 86 uint8_t pico_dhcp_opt_dns(void *ptr, struct pico_ip4 *ip)
tass 68:0847e35d08a6 87 {
TASS Belgium NV 131:4758606c9316 88 struct pico_dhcp_opt *opt = (struct pico_dhcp_opt *)ptr;
tass 68:0847e35d08a6 89
TASS Belgium NV 131:4758606c9316 90 /* option: dns */
TASS Belgium NV 131:4758606c9316 91 opt->code = PICO_DHCP_OPT_DNS;
TASS Belgium NV 131:4758606c9316 92 opt->len = PICO_DHCP_OPTLEN_DNS - PICO_DHCP_OPTLEN_HDR;
tass 152:a3d286bf94e5 93 opt->ext.dns1.ip = *ip;
TASS Belgium NV 131:4758606c9316 94 return PICO_DHCP_OPTLEN_DNS;
tass 68:0847e35d08a6 95 }
tass 68:0847e35d08a6 96
tass 70:cd218dd180e5 97 uint8_t pico_dhcp_opt_broadcast(void *ptr, struct pico_ip4 *ip)
tass 68:0847e35d08a6 98 {
TASS Belgium NV 131:4758606c9316 99 struct pico_dhcp_opt *opt = (struct pico_dhcp_opt *)ptr;
tass 68:0847e35d08a6 100
TASS Belgium NV 131:4758606c9316 101 /* option: broadcast */
TASS Belgium NV 131:4758606c9316 102 opt->code = PICO_DHCP_OPT_BROADCAST;
TASS Belgium NV 131:4758606c9316 103 opt->len = PICO_DHCP_OPTLEN_BROADCAST - PICO_DHCP_OPTLEN_HDR;
TASS Belgium NV 131:4758606c9316 104 opt->ext.broadcast.ip = *ip;
TASS Belgium NV 131:4758606c9316 105 return PICO_DHCP_OPTLEN_BROADCAST;
tass 68:0847e35d08a6 106 }
tass 68:0847e35d08a6 107
tass 70:cd218dd180e5 108 uint8_t pico_dhcp_opt_reqip(void *ptr, struct pico_ip4 *ip)
tass 68:0847e35d08a6 109 {
TASS Belgium NV 131:4758606c9316 110 struct pico_dhcp_opt *opt = (struct pico_dhcp_opt *)ptr;
tass 68:0847e35d08a6 111
TASS Belgium NV 131:4758606c9316 112 /* option: request IP address */
TASS Belgium NV 131:4758606c9316 113 opt->code = PICO_DHCP_OPT_REQIP;
TASS Belgium NV 131:4758606c9316 114 opt->len = PICO_DHCP_OPTLEN_REQIP - PICO_DHCP_OPTLEN_HDR;
TASS Belgium NV 131:4758606c9316 115 opt->ext.req_ip.ip = *ip;
TASS Belgium NV 131:4758606c9316 116 return PICO_DHCP_OPTLEN_REQIP;
tass 68:0847e35d08a6 117 }
tass 68:0847e35d08a6 118
tass 70:cd218dd180e5 119 uint8_t pico_dhcp_opt_leasetime(void *ptr, uint32_t time)
tass 68:0847e35d08a6 120 {
TASS Belgium NV 131:4758606c9316 121 struct pico_dhcp_opt *opt = (struct pico_dhcp_opt *)ptr;
tass 68:0847e35d08a6 122
TASS Belgium NV 131:4758606c9316 123 /* option: lease time */
TASS Belgium NV 131:4758606c9316 124 opt->code = PICO_DHCP_OPT_LEASETIME;
TASS Belgium NV 131:4758606c9316 125 opt->len = PICO_DHCP_OPTLEN_LEASETIME - PICO_DHCP_OPTLEN_HDR;
TASS Belgium NV 131:4758606c9316 126 opt->ext.lease_time.time = time;
TASS Belgium NV 131:4758606c9316 127 return PICO_DHCP_OPTLEN_LEASETIME;
tass 68:0847e35d08a6 128 }
tass 68:0847e35d08a6 129
tass 70:cd218dd180e5 130 uint8_t pico_dhcp_opt_msgtype(void *ptr, uint8_t type)
tass 68:0847e35d08a6 131 {
TASS Belgium NV 131:4758606c9316 132 struct pico_dhcp_opt *opt = (struct pico_dhcp_opt *)ptr;
tass 68:0847e35d08a6 133
TASS Belgium NV 131:4758606c9316 134 /* option: message type */
TASS Belgium NV 131:4758606c9316 135 opt->code = PICO_DHCP_OPT_MSGTYPE;
TASS Belgium NV 131:4758606c9316 136 opt->len = PICO_DHCP_OPTLEN_MSGTYPE - PICO_DHCP_OPTLEN_HDR;
TASS Belgium NV 131:4758606c9316 137 opt->ext.msg_type.type = type;
TASS Belgium NV 131:4758606c9316 138 return PICO_DHCP_OPTLEN_MSGTYPE;
tass 68:0847e35d08a6 139 }
tass 68:0847e35d08a6 140
tass 70:cd218dd180e5 141 uint8_t pico_dhcp_opt_serverid(void *ptr, struct pico_ip4 *ip)
tass 68:0847e35d08a6 142 {
TASS Belgium NV 131:4758606c9316 143 struct pico_dhcp_opt *opt = (struct pico_dhcp_opt *)ptr;
tass 68:0847e35d08a6 144
TASS Belgium NV 131:4758606c9316 145 /* option: server identifier */
TASS Belgium NV 131:4758606c9316 146 opt->code = PICO_DHCP_OPT_SERVERID;
TASS Belgium NV 131:4758606c9316 147 opt->len = PICO_DHCP_OPTLEN_SERVERID - PICO_DHCP_OPTLEN_HDR;
TASS Belgium NV 131:4758606c9316 148 opt->ext.server_id.ip = *ip;
TASS Belgium NV 131:4758606c9316 149 return PICO_DHCP_OPTLEN_SERVERID;
tass 68:0847e35d08a6 150 }
tass 68:0847e35d08a6 151
tass 70:cd218dd180e5 152 uint8_t pico_dhcp_opt_paramlist(void *ptr)
tass 68:0847e35d08a6 153 {
TASS Belgium NV 131:4758606c9316 154 struct pico_dhcp_opt *opt = (struct pico_dhcp_opt *)ptr;
tass 68:0847e35d08a6 155
TASS Belgium NV 131:4758606c9316 156 /* option: parameter list */
TASS Belgium NV 131:4758606c9316 157 opt->code = PICO_DHCP_OPT_PARAMLIST;
TASS Belgium NV 131:4758606c9316 158 opt->len = PICO_DHCP_OPTLEN_PARAMLIST - PICO_DHCP_OPTLEN_HDR;
TASS Belgium NV 131:4758606c9316 159 opt->ext.param_list.code[0] = PICO_DHCP_OPT_NETMASK;
TASS Belgium NV 131:4758606c9316 160 opt->ext.param_list.code[1] = PICO_DHCP_OPT_TIME;
TASS Belgium NV 131:4758606c9316 161 opt->ext.param_list.code[2] = PICO_DHCP_OPT_ROUTER;
TASS Belgium NV 131:4758606c9316 162 opt->ext.param_list.code[3] = PICO_DHCP_OPT_HOSTNAME;
TASS Belgium NV 131:4758606c9316 163 opt->ext.param_list.code[4] = PICO_DHCP_OPT_RENEWALTIME;
TASS Belgium NV 131:4758606c9316 164 opt->ext.param_list.code[5] = PICO_DHCP_OPT_REBINDINGTIME;
tass 152:a3d286bf94e5 165 opt->ext.param_list.code[6] = PICO_DHCP_OPT_DNS;
TASS Belgium NV 131:4758606c9316 166 return PICO_DHCP_OPTLEN_PARAMLIST;
tass 68:0847e35d08a6 167 }
tass 68:0847e35d08a6 168
tass 70:cd218dd180e5 169 uint8_t pico_dhcp_opt_maxmsgsize(void *ptr, uint16_t size)
tass 68:0847e35d08a6 170 {
TASS Belgium NV 131:4758606c9316 171 struct pico_dhcp_opt *opt = (struct pico_dhcp_opt *)ptr;
tass 68:0847e35d08a6 172
TASS Belgium NV 131:4758606c9316 173 /* option: maximum message size */
TASS Belgium NV 131:4758606c9316 174 opt->code = PICO_DHCP_OPT_MAXMSGSIZE;
TASS Belgium NV 131:4758606c9316 175 opt->len = PICO_DHCP_OPTLEN_MAXMSGSIZE - PICO_DHCP_OPTLEN_HDR;
TASS Belgium NV 131:4758606c9316 176 opt->ext.max_msg_size.size = short_be(size);
TASS Belgium NV 131:4758606c9316 177 return PICO_DHCP_OPTLEN_MAXMSGSIZE;
tass 68:0847e35d08a6 178 }
tass 68:0847e35d08a6 179
tass 70:cd218dd180e5 180 uint8_t pico_dhcp_opt_end(void *ptr)
tass 68:0847e35d08a6 181 {
TASS Belgium NV 131:4758606c9316 182 uint8_t *opt = (uint8_t *)ptr;
tass 68:0847e35d08a6 183
TASS Belgium NV 131:4758606c9316 184 /* option: end of options */
TASS Belgium NV 131:4758606c9316 185 *opt = PICO_DHCP_OPT_END;
TASS Belgium NV 131:4758606c9316 186 return PICO_DHCP_OPTLEN_END;
tass 68:0847e35d08a6 187 }
tass 68:0847e35d08a6 188
tass 68:0847e35d08a6 189 #endif