Michael Spencer / Smoothie

Fork of Smoothie to port to mbed non-LPC targets.

Dependencies:   mbed

Fork of Smoothie by Stéphane Cachat

libs/Network/uip/dhcpc/dhcpc.c@2:1df0b61d3b5a, 2014-02-28 (annotated)

Committer:
Michael J. Spencer
Date:
Fri Feb 28 18:52:52 2014 -0800
Revision:
2:1df0b61d3b5a
Update to latest Smoothie.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Michael J. Spencer 2:1df0b61d3b5a 1 /*
Michael J. Spencer 2:1df0b61d3b5a 2 * Copyright (c) 2005, Swedish Institute of Computer Science
Michael J. Spencer 2:1df0b61d3b5a 3 * All rights reserved.
Michael J. Spencer 2:1df0b61d3b5a 4 *
Michael J. Spencer 2:1df0b61d3b5a 5 * Redistribution and use in source and binary forms, with or without
Michael J. Spencer 2:1df0b61d3b5a 6 * modification, are permitted provided that the following conditions
Michael J. Spencer 2:1df0b61d3b5a 7 * are met:
Michael J. Spencer 2:1df0b61d3b5a 8 * 1. Redistributions of source code must retain the above copyright
Michael J. Spencer 2:1df0b61d3b5a 9 * notice, this list of conditions and the following disclaimer.
Michael J. Spencer 2:1df0b61d3b5a 10 * 2. Redistributions in binary form must reproduce the above copyright
Michael J. Spencer 2:1df0b61d3b5a 11 * notice, this list of conditions and the following disclaimer in the
Michael J. Spencer 2:1df0b61d3b5a 12 * documentation and/or other materials provided with the distribution.
Michael J. Spencer 2:1df0b61d3b5a 13 * 3. Neither the name of the Institute nor the names of its contributors
Michael J. Spencer 2:1df0b61d3b5a 14 * may be used to endorse or promote products derived from this software
Michael J. Spencer 2:1df0b61d3b5a 15 * without specific prior written permission.
Michael J. Spencer 2:1df0b61d3b5a 16 *
Michael J. Spencer 2:1df0b61d3b5a 17 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
Michael J. Spencer 2:1df0b61d3b5a 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
Michael J. Spencer 2:1df0b61d3b5a 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
Michael J. Spencer 2:1df0b61d3b5a 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
Michael J. Spencer 2:1df0b61d3b5a 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
Michael J. Spencer 2:1df0b61d3b5a 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
Michael J. Spencer 2:1df0b61d3b5a 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
Michael J. Spencer 2:1df0b61d3b5a 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
Michael J. Spencer 2:1df0b61d3b5a 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
Michael J. Spencer 2:1df0b61d3b5a 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
Michael J. Spencer 2:1df0b61d3b5a 27 * SUCH DAMAGE.
Michael J. Spencer 2:1df0b61d3b5a 28 *
Michael J. Spencer 2:1df0b61d3b5a 29 * This file is part of the uIP TCP/IP stack
Michael J. Spencer 2:1df0b61d3b5a 30 *
Michael J. Spencer 2:1df0b61d3b5a 31 * @(#)$Id: dhcpc.c,v 1.2 2006/06/11 21:46:37 adam Exp $
Michael J. Spencer 2:1df0b61d3b5a 32 */
Michael J. Spencer 2:1df0b61d3b5a 33
Michael J. Spencer 2:1df0b61d3b5a 34 #include <stdio.h>
Michael J. Spencer 2:1df0b61d3b5a 35 #include <string.h>
Michael J. Spencer 2:1df0b61d3b5a 36
Michael J. Spencer 2:1df0b61d3b5a 37 #include "uip.h"
Michael J. Spencer 2:1df0b61d3b5a 38 #include "dhcpc.h"
Michael J. Spencer 2:1df0b61d3b5a 39 #include "timer.h"
Michael J. Spencer 2:1df0b61d3b5a 40 #include "pt.h"
Michael J. Spencer 2:1df0b61d3b5a 41
Michael J. Spencer 2:1df0b61d3b5a 42 #if UIP_CONF_UDP
Michael J. Spencer 2:1df0b61d3b5a 43
Michael J. Spencer 2:1df0b61d3b5a 44 #define STATE_INITIAL 0
Michael J. Spencer 2:1df0b61d3b5a 45 #define STATE_SENDING 1
Michael J. Spencer 2:1df0b61d3b5a 46 #define STATE_OFFER_RECEIVED 2
Michael J. Spencer 2:1df0b61d3b5a 47 #define STATE_CONFIG_RECEIVED 3
Michael J. Spencer 2:1df0b61d3b5a 48
Michael J. Spencer 2:1df0b61d3b5a 49 #define ntohl(a) ((((a) >> 24) & 0x000000FF) | (((a) >> 8) & 0x0000FF00) | (((a) << 8) & 0x00FF0000) | (((a) << 24) & 0xFF000000))
Michael J. Spencer 2:1df0b61d3b5a 50 static struct dhcpc_state s __attribute__ ((section ("AHBSRAM1")));
Michael J. Spencer 2:1df0b61d3b5a 51 //#define UIP_CONF_DHCP_LIGHT
Michael J. Spencer 2:1df0b61d3b5a 52
Michael J. Spencer 2:1df0b61d3b5a 53 struct dhcp_msg {
Michael J. Spencer 2:1df0b61d3b5a 54 u8_t op, htype, hlen, hops;
Michael J. Spencer 2:1df0b61d3b5a 55 u8_t xid[4];
Michael J. Spencer 2:1df0b61d3b5a 56 u16_t secs, flags;
Michael J. Spencer 2:1df0b61d3b5a 57 u8_t ciaddr[4];
Michael J. Spencer 2:1df0b61d3b5a 58 u8_t yiaddr[4];
Michael J. Spencer 2:1df0b61d3b5a 59 u8_t siaddr[4];
Michael J. Spencer 2:1df0b61d3b5a 60 u8_t giaddr[4];
Michael J. Spencer 2:1df0b61d3b5a 61 u8_t chaddr[16];
Michael J. Spencer 2:1df0b61d3b5a 62 #ifndef UIP_CONF_DHCP_LIGHT
Michael J. Spencer 2:1df0b61d3b5a 63 u8_t sname[64];
Michael J. Spencer 2:1df0b61d3b5a 64 u8_t file[128];
Michael J. Spencer 2:1df0b61d3b5a 65 #endif
Michael J. Spencer 2:1df0b61d3b5a 66 u8_t options[312];
Michael J. Spencer 2:1df0b61d3b5a 67 };
Michael J. Spencer 2:1df0b61d3b5a 68
Michael J. Spencer 2:1df0b61d3b5a 69 #define BOOTP_BROADCAST 0x8000
Michael J. Spencer 2:1df0b61d3b5a 70
Michael J. Spencer 2:1df0b61d3b5a 71 #define DHCP_REQUEST 1
Michael J. Spencer 2:1df0b61d3b5a 72 #define DHCP_REPLY 2
Michael J. Spencer 2:1df0b61d3b5a 73 #define DHCP_HTYPE_ETHERNET 1
Michael J. Spencer 2:1df0b61d3b5a 74 #define DHCP_HLEN_ETHERNET 6
Michael J. Spencer 2:1df0b61d3b5a 75 #define DHCP_MSG_LEN 236
Michael J. Spencer 2:1df0b61d3b5a 76
Michael J. Spencer 2:1df0b61d3b5a 77 #define DHCPC_SERVER_PORT 67
Michael J. Spencer 2:1df0b61d3b5a 78 #define DHCPC_CLIENT_PORT 68
Michael J. Spencer 2:1df0b61d3b5a 79
Michael J. Spencer 2:1df0b61d3b5a 80 #define DHCPDISCOVER 1
Michael J. Spencer 2:1df0b61d3b5a 81 #define DHCPOFFER 2
Michael J. Spencer 2:1df0b61d3b5a 82 #define DHCPREQUEST 3
Michael J. Spencer 2:1df0b61d3b5a 83 #define DHCPDECLINE 4
Michael J. Spencer 2:1df0b61d3b5a 84 #define DHCPACK 5
Michael J. Spencer 2:1df0b61d3b5a 85 #define DHCPNAK 6
Michael J. Spencer 2:1df0b61d3b5a 86 #define DHCPRELEASE 7
Michael J. Spencer 2:1df0b61d3b5a 87
Michael J. Spencer 2:1df0b61d3b5a 88 #define DHCP_OPTION_SUBNET_MASK 1
Michael J. Spencer 2:1df0b61d3b5a 89 #define DHCP_OPTION_ROUTER 3
Michael J. Spencer 2:1df0b61d3b5a 90 #define DHCP_OPTION_DNS_SERVER 6
Michael J. Spencer 2:1df0b61d3b5a 91 #define DHCP_OPTION_REQ_IPADDR 50
Michael J. Spencer 2:1df0b61d3b5a 92 #define DHCP_OPTION_LEASE_TIME 51
Michael J. Spencer 2:1df0b61d3b5a 93 #define DHCP_OPTION_MSG_TYPE 53
Michael J. Spencer 2:1df0b61d3b5a 94 #define DHCP_OPTION_SERVER_ID 54
Michael J. Spencer 2:1df0b61d3b5a 95 #define DHCP_OPTION_REQ_LIST 55
Michael J. Spencer 2:1df0b61d3b5a 96 #define DHCP_OPTION_END 255
Michael J. Spencer 2:1df0b61d3b5a 97
Michael J. Spencer 2:1df0b61d3b5a 98 static uint32_t xid= 0x00112233;
Michael J. Spencer 2:1df0b61d3b5a 99
Michael J. Spencer 2:1df0b61d3b5a 100 static const u8_t magic_cookie[4] = {99, 130, 83, 99};
Michael J. Spencer 2:1df0b61d3b5a 101 /*---------------------------------------------------------------------------*/
Michael J. Spencer 2:1df0b61d3b5a 102 static u8_t *
Michael J. Spencer 2:1df0b61d3b5a 103 add_msg_type(u8_t *optptr, u8_t type)
Michael J. Spencer 2:1df0b61d3b5a 104 {
Michael J. Spencer 2:1df0b61d3b5a 105 *optptr++ = DHCP_OPTION_MSG_TYPE;
Michael J. Spencer 2:1df0b61d3b5a 106 *optptr++ = 1;
Michael J. Spencer 2:1df0b61d3b5a 107 *optptr++ = type;
Michael J. Spencer 2:1df0b61d3b5a 108 return optptr;
Michael J. Spencer 2:1df0b61d3b5a 109 }
Michael J. Spencer 2:1df0b61d3b5a 110 /*---------------------------------------------------------------------------*/
Michael J. Spencer 2:1df0b61d3b5a 111 static u8_t *
Michael J. Spencer 2:1df0b61d3b5a 112 add_server_id(u8_t *optptr)
Michael J. Spencer 2:1df0b61d3b5a 113 {
Michael J. Spencer 2:1df0b61d3b5a 114 *optptr++ = DHCP_OPTION_SERVER_ID;
Michael J. Spencer 2:1df0b61d3b5a 115 *optptr++ = 4;
Michael J. Spencer 2:1df0b61d3b5a 116 memcpy(optptr, &s.serverid, 4);
Michael J. Spencer 2:1df0b61d3b5a 117 return optptr + 4;
Michael J. Spencer 2:1df0b61d3b5a 118 }
Michael J. Spencer 2:1df0b61d3b5a 119 /*---------------------------------------------------------------------------*/
Michael J. Spencer 2:1df0b61d3b5a 120 static u8_t *
Michael J. Spencer 2:1df0b61d3b5a 121 add_req_ipaddr(u8_t *optptr)
Michael J. Spencer 2:1df0b61d3b5a 122 {
Michael J. Spencer 2:1df0b61d3b5a 123 *optptr++ = DHCP_OPTION_REQ_IPADDR;
Michael J. Spencer 2:1df0b61d3b5a 124 *optptr++ = 4;
Michael J. Spencer 2:1df0b61d3b5a 125 memcpy(optptr, &s.ipaddr, 4);
Michael J. Spencer 2:1df0b61d3b5a 126 return optptr + 4;
Michael J. Spencer 2:1df0b61d3b5a 127 }
Michael J. Spencer 2:1df0b61d3b5a 128 /*---------------------------------------------------------------------------*/
Michael J. Spencer 2:1df0b61d3b5a 129 static u8_t *
Michael J. Spencer 2:1df0b61d3b5a 130 add_req_options(u8_t *optptr)
Michael J. Spencer 2:1df0b61d3b5a 131 {
Michael J. Spencer 2:1df0b61d3b5a 132 *optptr++ = DHCP_OPTION_REQ_LIST;
Michael J. Spencer 2:1df0b61d3b5a 133 *optptr++ = 3;
Michael J. Spencer 2:1df0b61d3b5a 134 *optptr++ = DHCP_OPTION_SUBNET_MASK;
Michael J. Spencer 2:1df0b61d3b5a 135 *optptr++ = DHCP_OPTION_ROUTER;
Michael J. Spencer 2:1df0b61d3b5a 136 *optptr++ = DHCP_OPTION_DNS_SERVER;
Michael J. Spencer 2:1df0b61d3b5a 137 return optptr;
Michael J. Spencer 2:1df0b61d3b5a 138 }
Michael J. Spencer 2:1df0b61d3b5a 139 /*---------------------------------------------------------------------------*/
Michael J. Spencer 2:1df0b61d3b5a 140 static u8_t *
Michael J. Spencer 2:1df0b61d3b5a 141 add_end(u8_t *optptr)
Michael J. Spencer 2:1df0b61d3b5a 142 {
Michael J. Spencer 2:1df0b61d3b5a 143 *optptr++ = DHCP_OPTION_END;
Michael J. Spencer 2:1df0b61d3b5a 144 return optptr;
Michael J. Spencer 2:1df0b61d3b5a 145 }
Michael J. Spencer 2:1df0b61d3b5a 146 /*---------------------------------------------------------------------------*/
Michael J. Spencer 2:1df0b61d3b5a 147 static void
Michael J. Spencer 2:1df0b61d3b5a 148 create_msg(register struct dhcp_msg *m, int rea)
Michael J. Spencer 2:1df0b61d3b5a 149 {
Michael J. Spencer 2:1df0b61d3b5a 150 m->op = DHCP_REQUEST;
Michael J. Spencer 2:1df0b61d3b5a 151 m->htype = DHCP_HTYPE_ETHERNET;
Michael J. Spencer 2:1df0b61d3b5a 152 m->hlen = s.mac_len;
Michael J. Spencer 2:1df0b61d3b5a 153 m->hops = 0;
Michael J. Spencer 2:1df0b61d3b5a 154 memcpy(m->xid, &xid, sizeof(m->xid));
Michael J. Spencer 2:1df0b61d3b5a 155 m->secs = 0;
Michael J. Spencer 2:1df0b61d3b5a 156 m->flags = HTONS(BOOTP_BROADCAST); /* Broadcast bit. */
Michael J. Spencer 2:1df0b61d3b5a 157 /* uip_ipaddr_copy(m->ciaddr, uip_hostaddr);*/
Michael J. Spencer 2:1df0b61d3b5a 158 if(rea == 0 ) memcpy(m->ciaddr, uip_hostaddr, sizeof(m->ciaddr));
Michael J. Spencer 2:1df0b61d3b5a 159 else memset(m->ciaddr, 0, sizeof(m->ciaddr));
Michael J. Spencer 2:1df0b61d3b5a 160 memset(m->yiaddr, 0, sizeof(m->yiaddr));
Michael J. Spencer 2:1df0b61d3b5a 161 memset(m->siaddr, 0, sizeof(m->siaddr));
Michael J. Spencer 2:1df0b61d3b5a 162 memset(m->giaddr, 0, sizeof(m->giaddr));
Michael J. Spencer 2:1df0b61d3b5a 163 memcpy(m->chaddr, s.mac_addr, s.mac_len);
Michael J. Spencer 2:1df0b61d3b5a 164 memset(&m->chaddr[s.mac_len], 0, sizeof(m->chaddr) - s.mac_len);
Michael J. Spencer 2:1df0b61d3b5a 165 #ifndef UIP_CONF_DHCP_LIGHT
Michael J. Spencer 2:1df0b61d3b5a 166 memset(m->sname, 0, sizeof(m->sname));
Michael J. Spencer 2:1df0b61d3b5a 167 memset(m->file, 0, sizeof(m->file));
Michael J. Spencer 2:1df0b61d3b5a 168 #endif
Michael J. Spencer 2:1df0b61d3b5a 169
Michael J. Spencer 2:1df0b61d3b5a 170 memcpy(m->options, magic_cookie, sizeof(magic_cookie));
Michael J. Spencer 2:1df0b61d3b5a 171 }
Michael J. Spencer 2:1df0b61d3b5a 172 /*---------------------------------------------------------------------------*/
Michael J. Spencer 2:1df0b61d3b5a 173 static void
Michael J. Spencer 2:1df0b61d3b5a 174 send_discover(void)
Michael J. Spencer 2:1df0b61d3b5a 175 {
Michael J. Spencer 2:1df0b61d3b5a 176 u8_t *end;
Michael J. Spencer 2:1df0b61d3b5a 177 struct dhcp_msg *m = (struct dhcp_msg *)uip_appdata;
Michael J. Spencer 2:1df0b61d3b5a 178
Michael J. Spencer 2:1df0b61d3b5a 179 create_msg(m, 0);
Michael J. Spencer 2:1df0b61d3b5a 180
Michael J. Spencer 2:1df0b61d3b5a 181 end = add_msg_type(&m->options[4], DHCPDISCOVER);
Michael J. Spencer 2:1df0b61d3b5a 182 end = add_req_options(end);
Michael J. Spencer 2:1df0b61d3b5a 183 end = add_end(end);
Michael J. Spencer 2:1df0b61d3b5a 184
Michael J. Spencer 2:1df0b61d3b5a 185 uip_send(uip_appdata, end - (u8_t *)uip_appdata);
Michael J. Spencer 2:1df0b61d3b5a 186 }
Michael J. Spencer 2:1df0b61d3b5a 187 /*---------------------------------------------------------------------------*/
Michael J. Spencer 2:1df0b61d3b5a 188 static void
Michael J. Spencer 2:1df0b61d3b5a 189 send_request(int rea)
Michael J. Spencer 2:1df0b61d3b5a 190 {
Michael J. Spencer 2:1df0b61d3b5a 191 u8_t *end;
Michael J. Spencer 2:1df0b61d3b5a 192 struct dhcp_msg *m = (struct dhcp_msg *)uip_appdata;
Michael J. Spencer 2:1df0b61d3b5a 193
Michael J. Spencer 2:1df0b61d3b5a 194 create_msg(m, rea);
Michael J. Spencer 2:1df0b61d3b5a 195
Michael J. Spencer 2:1df0b61d3b5a 196 end = add_msg_type(&m->options[4], DHCPREQUEST);
Michael J. Spencer 2:1df0b61d3b5a 197 end = add_server_id(end);
Michael J. Spencer 2:1df0b61d3b5a 198 end = add_req_ipaddr(end);
Michael J. Spencer 2:1df0b61d3b5a 199 end = add_end(end);
Michael J. Spencer 2:1df0b61d3b5a 200
Michael J. Spencer 2:1df0b61d3b5a 201 uip_send(uip_appdata, end - (u8_t *)uip_appdata);
Michael J. Spencer 2:1df0b61d3b5a 202 }
Michael J. Spencer 2:1df0b61d3b5a 203 /*---------------------------------------------------------------------------*/
Michael J. Spencer 2:1df0b61d3b5a 204 static u8_t
Michael J. Spencer 2:1df0b61d3b5a 205 parse_options(u8_t *optptr, int len)
Michael J. Spencer 2:1df0b61d3b5a 206 {
Michael J. Spencer 2:1df0b61d3b5a 207 u8_t *end = optptr + len;
Michael J. Spencer 2:1df0b61d3b5a 208 u8_t type = 0;
Michael J. Spencer 2:1df0b61d3b5a 209
Michael J. Spencer 2:1df0b61d3b5a 210 while (optptr < end) {
Michael J. Spencer 2:1df0b61d3b5a 211 switch (*optptr) {
Michael J. Spencer 2:1df0b61d3b5a 212 case DHCP_OPTION_SUBNET_MASK:
Michael J. Spencer 2:1df0b61d3b5a 213 memcpy(&s.netmask, optptr + 2, 4);
Michael J. Spencer 2:1df0b61d3b5a 214 break;
Michael J. Spencer 2:1df0b61d3b5a 215 case DHCP_OPTION_ROUTER:
Michael J. Spencer 2:1df0b61d3b5a 216 memcpy(&s.default_router, optptr + 2, 4);
Michael J. Spencer 2:1df0b61d3b5a 217 break;
Michael J. Spencer 2:1df0b61d3b5a 218 case DHCP_OPTION_DNS_SERVER:
Michael J. Spencer 2:1df0b61d3b5a 219 memcpy(&s.dnsaddr, optptr + 2, 4);
Michael J. Spencer 2:1df0b61d3b5a 220 break;
Michael J. Spencer 2:1df0b61d3b5a 221 case DHCP_OPTION_MSG_TYPE:
Michael J. Spencer 2:1df0b61d3b5a 222 type = *(optptr + 2);
Michael J. Spencer 2:1df0b61d3b5a 223 break;
Michael J. Spencer 2:1df0b61d3b5a 224 case DHCP_OPTION_SERVER_ID:
Michael J. Spencer 2:1df0b61d3b5a 225 memcpy(s.serverid, optptr + 2, 4);
Michael J. Spencer 2:1df0b61d3b5a 226 break;
Michael J. Spencer 2:1df0b61d3b5a 227 case DHCP_OPTION_LEASE_TIME:
Michael J. Spencer 2:1df0b61d3b5a 228 memcpy(&s.lease_time, optptr + 2, 4);
Michael J. Spencer 2:1df0b61d3b5a 229 break;
Michael J. Spencer 2:1df0b61d3b5a 230 case DHCP_OPTION_END:
Michael J. Spencer 2:1df0b61d3b5a 231 return type;
Michael J. Spencer 2:1df0b61d3b5a 232 }
Michael J. Spencer 2:1df0b61d3b5a 233
Michael J. Spencer 2:1df0b61d3b5a 234 optptr += optptr[1] + 2;
Michael J. Spencer 2:1df0b61d3b5a 235 }
Michael J. Spencer 2:1df0b61d3b5a 236 return type;
Michael J. Spencer 2:1df0b61d3b5a 237 }
Michael J. Spencer 2:1df0b61d3b5a 238 /*---------------------------------------------------------------------------*/
Michael J. Spencer 2:1df0b61d3b5a 239 u8_t
Michael J. Spencer 2:1df0b61d3b5a 240 parse_msg(void)
Michael J. Spencer 2:1df0b61d3b5a 241 {
Michael J. Spencer 2:1df0b61d3b5a 242 struct dhcp_msg *m = (struct dhcp_msg *)uip_appdata;
Michael J. Spencer 2:1df0b61d3b5a 243
Michael J. Spencer 2:1df0b61d3b5a 244 if (m->op == DHCP_REPLY &&
Michael J. Spencer 2:1df0b61d3b5a 245 memcmp(m->xid, &xid, sizeof(xid)) == 0 &&
Michael J. Spencer 2:1df0b61d3b5a 246 memcmp(m->chaddr, s.mac_addr, s.mac_len) == 0) {
Michael J. Spencer 2:1df0b61d3b5a 247 memcpy(&s.ipaddr, m->yiaddr, 4);
Michael J. Spencer 2:1df0b61d3b5a 248 return parse_options(&m->options[4], uip_datalen());
Michael J. Spencer 2:1df0b61d3b5a 249 }
Michael J. Spencer 2:1df0b61d3b5a 250 return 0;
Michael J. Spencer 2:1df0b61d3b5a 251 }
Michael J. Spencer 2:1df0b61d3b5a 252 /*---------------------------------------------------------------------------*/
Michael J. Spencer 2:1df0b61d3b5a 253 static
Michael J. Spencer 2:1df0b61d3b5a 254 PT_THREAD(handle_dhcp(void))
Michael J. Spencer 2:1df0b61d3b5a 255 {
Michael J. Spencer 2:1df0b61d3b5a 256 PT_BEGIN(&s.pt);
Michael J. Spencer 2:1df0b61d3b5a 257
Michael J. Spencer 2:1df0b61d3b5a 258 /* try_again:*/
Michael J. Spencer 2:1df0b61d3b5a 259 s.state = STATE_SENDING;
Michael J. Spencer 2:1df0b61d3b5a 260 s.ticks = CLOCK_SECOND;
Michael J. Spencer 2:1df0b61d3b5a 261 xid++;
Michael J. Spencer 2:1df0b61d3b5a 262
Michael J. Spencer 2:1df0b61d3b5a 263 send_discover();
Michael J. Spencer 2:1df0b61d3b5a 264 do {
Michael J. Spencer 2:1df0b61d3b5a 265 timer_set(&s.timer, s.ticks);
Michael J. Spencer 2:1df0b61d3b5a 266 PT_WAIT_UNTIL(&s.pt, uip_newdata() || timer_expired(&s.timer));
Michael J. Spencer 2:1df0b61d3b5a 267 // if we timed out then increase time out and send discover again
Michael J. Spencer 2:1df0b61d3b5a 268 if (timer_expired(&s.timer)) {
Michael J. Spencer 2:1df0b61d3b5a 269 if (s.ticks < CLOCK_SECOND * 60) {
Michael J. Spencer 2:1df0b61d3b5a 270 s.ticks *= 2;
Michael J. Spencer 2:1df0b61d3b5a 271 }
Michael J. Spencer 2:1df0b61d3b5a 272 send_discover();
Michael J. Spencer 2:1df0b61d3b5a 273 }else{
Michael J. Spencer 2:1df0b61d3b5a 274 // we may have gotten some other UDP packet in which case just wait some more for the right packet
Michael J. Spencer 2:1df0b61d3b5a 275 if (uip_newdata() && parse_msg() == DHCPOFFER) {
Michael J. Spencer 2:1df0b61d3b5a 276 s.state = STATE_OFFER_RECEIVED;
Michael J. Spencer 2:1df0b61d3b5a 277 break;
Michael J. Spencer 2:1df0b61d3b5a 278 }
Michael J. Spencer 2:1df0b61d3b5a 279 }
Michael J. Spencer 2:1df0b61d3b5a 280 PT_YIELD(&s.pt);
Michael J. Spencer 2:1df0b61d3b5a 281
Michael J. Spencer 2:1df0b61d3b5a 282 } while (s.state != STATE_OFFER_RECEIVED);
Michael J. Spencer 2:1df0b61d3b5a 283
Michael J. Spencer 2:1df0b61d3b5a 284 s.ticks = CLOCK_SECOND;
Michael J. Spencer 2:1df0b61d3b5a 285 xid++;
Michael J. Spencer 2:1df0b61d3b5a 286
Michael J. Spencer 2:1df0b61d3b5a 287 send_request(0);
Michael J. Spencer 2:1df0b61d3b5a 288 do {
Michael J. Spencer 2:1df0b61d3b5a 289 timer_set(&s.timer, s.ticks);
Michael J. Spencer 2:1df0b61d3b5a 290 PT_WAIT_UNTIL(&s.pt, uip_newdata() || timer_expired(&s.timer));
Michael J. Spencer 2:1df0b61d3b5a 291
Michael J. Spencer 2:1df0b61d3b5a 292 if (timer_expired(&s.timer)) {
Michael J. Spencer 2:1df0b61d3b5a 293 if (s.ticks <= CLOCK_SECOND * 10) {
Michael J. Spencer 2:1df0b61d3b5a 294 s.ticks += CLOCK_SECOND;
Michael J. Spencer 2:1df0b61d3b5a 295 send_request(0); // resend only on timeout
Michael J. Spencer 2:1df0b61d3b5a 296 } else {
Michael J. Spencer 2:1df0b61d3b5a 297 PT_RESTART(&s.pt);
Michael J. Spencer 2:1df0b61d3b5a 298 }
Michael J. Spencer 2:1df0b61d3b5a 299 }else{
Michael J. Spencer 2:1df0b61d3b5a 300 if (uip_newdata() && parse_msg() == DHCPACK) {
Michael J. Spencer 2:1df0b61d3b5a 301 s.state = STATE_CONFIG_RECEIVED;
Michael J. Spencer 2:1df0b61d3b5a 302 break;
Michael J. Spencer 2:1df0b61d3b5a 303 }
Michael J. Spencer 2:1df0b61d3b5a 304 }
Michael J. Spencer 2:1df0b61d3b5a 305 PT_YIELD(&s.pt);
Michael J. Spencer 2:1df0b61d3b5a 306
Michael J. Spencer 2:1df0b61d3b5a 307 } while (s.state != STATE_CONFIG_RECEIVED);
Michael J. Spencer 2:1df0b61d3b5a 308
Michael J. Spencer 2:1df0b61d3b5a 309 dhcpc_configured(&s);
Michael J. Spencer 2:1df0b61d3b5a 310
Michael J. Spencer 2:1df0b61d3b5a 311 // now we wait for close to expiration and renew the lease
Michael J. Spencer 2:1df0b61d3b5a 312 do {
Michael J. Spencer 2:1df0b61d3b5a 313 // we should reacquire expired leases here.
Michael J. Spencer 2:1df0b61d3b5a 314 timer_set(&s.timer, (ntohl(s.lease_time) * 0.5)*CLOCK_SECOND); // half of lease expire time
Michael J. Spencer 2:1df0b61d3b5a 315 PT_WAIT_UNTIL(&s.pt, timer_expired(&s.timer));
Michael J. Spencer 2:1df0b61d3b5a 316
Michael J. Spencer 2:1df0b61d3b5a 317 uip_log("reaquire dhcp lease");
Michael J. Spencer 2:1df0b61d3b5a 318
Michael J. Spencer 2:1df0b61d3b5a 319 // spec says send request direct to server that gave it to us, but seems to be unecessary
Michael J. Spencer 2:1df0b61d3b5a 320 //uip_ipaddr_copy(&s.conn->ripaddr, s.serverid);
Michael J. Spencer 2:1df0b61d3b5a 321
Michael J. Spencer 2:1df0b61d3b5a 322 s.ticks = CLOCK_SECOND;
Michael J. Spencer 2:1df0b61d3b5a 323 xid++;
Michael J. Spencer 2:1df0b61d3b5a 324 send_request(0);
Michael J. Spencer 2:1df0b61d3b5a 325 do {
Michael J. Spencer 2:1df0b61d3b5a 326 timer_set(&s.timer, s.ticks);
Michael J. Spencer 2:1df0b61d3b5a 327 PT_WAIT_UNTIL(&s.pt, uip_newdata() || timer_expired(&s.timer));
Michael J. Spencer 2:1df0b61d3b5a 328
Michael J. Spencer 2:1df0b61d3b5a 329 if (timer_expired(&s.timer)) {
Michael J. Spencer 2:1df0b61d3b5a 330 if (s.ticks <= CLOCK_SECOND * 10) {
Michael J. Spencer 2:1df0b61d3b5a 331 s.ticks += CLOCK_SECOND;
Michael J. Spencer 2:1df0b61d3b5a 332 send_request(0); // resend only on timeout
Michael J. Spencer 2:1df0b61d3b5a 333 } else {
Michael J. Spencer 2:1df0b61d3b5a 334 // give up
Michael J. Spencer 2:1df0b61d3b5a 335 // TODO probably need to deal with upstream apps and stop them then reinit them
Michael J. Spencer 2:1df0b61d3b5a 336 PT_RESTART(&s.pt);
Michael J. Spencer 2:1df0b61d3b5a 337 }
Michael J. Spencer 2:1df0b61d3b5a 338 }else{
Michael J. Spencer 2:1df0b61d3b5a 339 if (parse_msg() == DHCPACK) {
Michael J. Spencer 2:1df0b61d3b5a 340 uip_log("dhcp lease renewed");
Michael J. Spencer 2:1df0b61d3b5a 341 break;
Michael J. Spencer 2:1df0b61d3b5a 342 }
Michael J. Spencer 2:1df0b61d3b5a 343 }
Michael J. Spencer 2:1df0b61d3b5a 344 PT_YIELD(&s.pt);
Michael J. Spencer 2:1df0b61d3b5a 345 }while(1);
Michael J. Spencer 2:1df0b61d3b5a 346
Michael J. Spencer 2:1df0b61d3b5a 347 }while(1);
Michael J. Spencer 2:1df0b61d3b5a 348
Michael J. Spencer 2:1df0b61d3b5a 349 PT_END(&s.pt);
Michael J. Spencer 2:1df0b61d3b5a 350 }
Michael J. Spencer 2:1df0b61d3b5a 351 /*---------------------------------------------------------------------------*/
Michael J. Spencer 2:1df0b61d3b5a 352 void
Michael J. Spencer 2:1df0b61d3b5a 353 dhcpc_init(const void *mac_addr, int mac_len)
Michael J. Spencer 2:1df0b61d3b5a 354 {
Michael J. Spencer 2:1df0b61d3b5a 355 uip_ipaddr_t addr;
Michael J. Spencer 2:1df0b61d3b5a 356
Michael J. Spencer 2:1df0b61d3b5a 357 s.mac_addr = mac_addr;
Michael J. Spencer 2:1df0b61d3b5a 358 s.mac_len = mac_len;
Michael J. Spencer 2:1df0b61d3b5a 359
Michael J. Spencer 2:1df0b61d3b5a 360 s.state = STATE_INITIAL;
Michael J. Spencer 2:1df0b61d3b5a 361 uip_ipaddr(addr, 255, 255, 255, 255);
Michael J. Spencer 2:1df0b61d3b5a 362 s.conn = uip_udp_new(&addr, HTONS(DHCPC_SERVER_PORT));
Michael J. Spencer 2:1df0b61d3b5a 363 if (s.conn != NULL) {
Michael J. Spencer 2:1df0b61d3b5a 364 uip_udp_bind(s.conn, HTONS(DHCPC_CLIENT_PORT));
Michael J. Spencer 2:1df0b61d3b5a 365 }
Michael J. Spencer 2:1df0b61d3b5a 366 PT_INIT(&s.pt);
Michael J. Spencer 2:1df0b61d3b5a 367 }
Michael J. Spencer 2:1df0b61d3b5a 368 /*---------------------------------------------------------------------------*/
Michael J. Spencer 2:1df0b61d3b5a 369 void
Michael J. Spencer 2:1df0b61d3b5a 370 dhcpc_appcall(void)
Michael J. Spencer 2:1df0b61d3b5a 371 {
Michael J. Spencer 2:1df0b61d3b5a 372 handle_dhcp();
Michael J. Spencer 2:1df0b61d3b5a 373 }
Michael J. Spencer 2:1df0b61d3b5a 374 /*---------------------------------------------------------------------------*/
Michael J. Spencer 2:1df0b61d3b5a 375 void
Michael J. Spencer 2:1df0b61d3b5a 376 dhcpc_request(void)
Michael J. Spencer 2:1df0b61d3b5a 377 {
Michael J. Spencer 2:1df0b61d3b5a 378 u16_t ipaddr[2];
Michael J. Spencer 2:1df0b61d3b5a 379
Michael J. Spencer 2:1df0b61d3b5a 380 if (s.state == STATE_INITIAL) {
Michael J. Spencer 2:1df0b61d3b5a 381 uip_ipaddr(ipaddr, 0, 0, 0, 0);
Michael J. Spencer 2:1df0b61d3b5a 382 uip_sethostaddr(ipaddr);
Michael J. Spencer 2:1df0b61d3b5a 383 /* handle_dhcp(PROCESS_EVENT_NONE, NULL);*/
Michael J. Spencer 2:1df0b61d3b5a 384 }
Michael J. Spencer 2:1df0b61d3b5a 385 }
Michael J. Spencer 2:1df0b61d3b5a 386 /*---------------------------------------------------------------------------*/
Michael J. Spencer 2:1df0b61d3b5a 387
Michael J. Spencer 2:1df0b61d3b5a 388 #endif