Ivo Noorhoff / UIPEthernet

Fork for fixes

utility/uip.h@4:d774541a34da, 2015-03-08 (annotated)

Committer:
hudakz
Date:
Sun Mar 08 20:26:56 2015 +0000
Revision:
4:d774541a34da
Parent:
3:5b17e4656dd0
Child:
8:4acb22344932
Version 1.09 (fixed leaking client-data caused by race-condition on remote close)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
hudakz 3:5b17e4656dd0 1
hudakz 3:5b17e4656dd0 2 /**
hudakz 3:5b17e4656dd0 3 * \addtogroup uip
hudakz 3:5b17e4656dd0 4 * @{
hudakz 3:5b17e4656dd0 5 */
hudakz 3:5b17e4656dd0 6
hudakz 3:5b17e4656dd0 7 /**
hudakz 3:5b17e4656dd0 8 * \file
hudakz 3:5b17e4656dd0 9 * Header file for the uIP TCP/IP stack.
hudakz 3:5b17e4656dd0 10 * \author Adam Dunkels <adam@dunkels.com>
hudakz 3:5b17e4656dd0 11 *
hudakz 3:5b17e4656dd0 12 * The uIP TCP/IP stack header file contains definitions for a number
hudakz 3:5b17e4656dd0 13 * of C macros that are used by uIP programs as well as internal uIP
hudakz 3:5b17e4656dd0 14 * structures, TCP/IP header structures and function declarations.
hudakz 3:5b17e4656dd0 15 *
hudakz 3:5b17e4656dd0 16 */
hudakz 4:d774541a34da 17
hudakz 4:d774541a34da 18
hudakz 3:5b17e4656dd0 19 /*
hudakz 3:5b17e4656dd0 20 * Copyright (c) 2001-2003, Adam Dunkels.
hudakz 3:5b17e4656dd0 21 * All rights reserved.
hudakz 3:5b17e4656dd0 22 *
hudakz 3:5b17e4656dd0 23 * Redistribution and use in source and binary forms, with or without
hudakz 3:5b17e4656dd0 24 * modification, are permitted provided that the following conditions
hudakz 3:5b17e4656dd0 25 * are met:
hudakz 3:5b17e4656dd0 26 * 1. Redistributions of source code must retain the above copyright
hudakz 3:5b17e4656dd0 27 * notice, this list of conditions and the following disclaimer.
hudakz 3:5b17e4656dd0 28 * 2. Redistributions in binary form must reproduce the above copyright
hudakz 3:5b17e4656dd0 29 * notice, this list of conditions and the following disclaimer in the
hudakz 3:5b17e4656dd0 30 * documentation and/or other materials provided with the distribution.
hudakz 3:5b17e4656dd0 31 * 3. The name of the author may not be used to endorse or promote
hudakz 3:5b17e4656dd0 32 * products derived from this software without specific prior
hudakz 3:5b17e4656dd0 33 * written permission.
hudakz 3:5b17e4656dd0 34 *
hudakz 3:5b17e4656dd0 35 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
hudakz 3:5b17e4656dd0 36 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
hudakz 3:5b17e4656dd0 37 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
hudakz 3:5b17e4656dd0 38 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
hudakz 3:5b17e4656dd0 39 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
hudakz 3:5b17e4656dd0 40 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
hudakz 3:5b17e4656dd0 41 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
hudakz 3:5b17e4656dd0 42 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
hudakz 3:5b17e4656dd0 43 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
hudakz 3:5b17e4656dd0 44 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
hudakz 3:5b17e4656dd0 45 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
hudakz 3:5b17e4656dd0 46 *
hudakz 3:5b17e4656dd0 47 * This file is part of the uIP TCP/IP stack.
hudakz 3:5b17e4656dd0 48 *
hudakz 3:5b17e4656dd0 49 * $Id: uip.h,v 1.40 2006/06/08 07:12:07 adam Exp $
hudakz 3:5b17e4656dd0 50 *
hudakz 3:5b17e4656dd0 51 */
hudakz 4:d774541a34da 52
hudakz 3:5b17e4656dd0 53 #ifndef __UIP_H__
hudakz 4:d774541a34da 54 #define __UIP_H__
hudakz 3:5b17e4656dd0 55
hudakz 4:d774541a34da 56 #include "uipopt.h"
hudakz 3:5b17e4656dd0 57
hudakz 3:5b17e4656dd0 58 /**
hudakz 3:5b17e4656dd0 59 * Repressentation of an IP address.
hudakz 3:5b17e4656dd0 60 *
hudakz 3:5b17e4656dd0 61 */
hudakz 3:5b17e4656dd0 62 typedef u16_t uip_ip4addr_t[2];
hudakz 4:d774541a34da 63 typedef u16_t uip_ip6addr_t[8];
hudakz 4:d774541a34da 64 #if UIP_CONF_IPV6
hudakz 4:d774541a34da 65 typedef uip_ip6addr_t uip_ipaddr_t;
hudakz 4:d774541a34da 66 #else /* UIP_CONF_IPV6 */
hudakz 4:d774541a34da 67 typedef uip_ip4addr_t uip_ipaddr_t;
hudakz 4:d774541a34da 68 #endif /* UIP_CONF_IPV6 */
hudakz 3:5b17e4656dd0 69
hudakz 3:5b17e4656dd0 70 /*---------------------------------------------------------------------------*/
hudakz 3:5b17e4656dd0 71 /* First, the functions that should be called from the
hudakz 3:5b17e4656dd0 72 * system. Initialization, the periodic timer and incoming packets are
hudakz 3:5b17e4656dd0 73 * handled by the following three functions.
hudakz 3:5b17e4656dd0 74 */
hudakz 4:d774541a34da 75
hudakz 3:5b17e4656dd0 76 /**
hudakz 3:5b17e4656dd0 77 * \defgroup uipconffunc uIP configuration functions
hudakz 3:5b17e4656dd0 78 * @{
hudakz 3:5b17e4656dd0 79 *
hudakz 3:5b17e4656dd0 80 * The uIP configuration functions are used for setting run-time
hudakz 3:5b17e4656dd0 81 * parameters in uIP such as IP addresses.
hudakz 3:5b17e4656dd0 82 */
hudakz 3:5b17e4656dd0 83
hudakz 3:5b17e4656dd0 84 /**
hudakz 3:5b17e4656dd0 85 * Set the IP address of this host.
hudakz 3:5b17e4656dd0 86 *
hudakz 3:5b17e4656dd0 87 * The IP address is represented as a 4-byte array where the first
hudakz 3:5b17e4656dd0 88 * octet of the IP address is put in the first member of the 4-byte
hudakz 3:5b17e4656dd0 89 * array.
hudakz 3:5b17e4656dd0 90 *
hudakz 3:5b17e4656dd0 91 * Example:
hudakz 3:5b17e4656dd0 92 \code
hudakz 3:5b17e4656dd0 93
hudakz 3:5b17e4656dd0 94 uip_ipaddr_t addr;
hudakz 3:5b17e4656dd0 95
hudakz 3:5b17e4656dd0 96 uip_ipaddr(&addr, 192,168,1,2);
hudakz 3:5b17e4656dd0 97 uip_sethostaddr(&addr);
hudakz 4:d774541a34da 98
hudakz 3:5b17e4656dd0 99 \endcode
hudakz 3:5b17e4656dd0 100 * \param addr A pointer to an IP address of type uip_ipaddr_t;
hudakz 3:5b17e4656dd0 101 *
hudakz 3:5b17e4656dd0 102 * \sa uip_ipaddr()
hudakz 3:5b17e4656dd0 103 *
hudakz 3:5b17e4656dd0 104 * \hideinitializer
hudakz 3:5b17e4656dd0 105 */
hudakz 4:d774541a34da 106 #define uip_sethostaddr(addr) uip_ipaddr_copy(uip_hostaddr, (addr))
hudakz 3:5b17e4656dd0 107
hudakz 3:5b17e4656dd0 108 /**
hudakz 3:5b17e4656dd0 109 * Get the IP address of this host.
hudakz 3:5b17e4656dd0 110 *
hudakz 3:5b17e4656dd0 111 * The IP address is represented as a 4-byte array where the first
hudakz 3:5b17e4656dd0 112 * octet of the IP address is put in the first member of the 4-byte
hudakz 3:5b17e4656dd0 113 * array.
hudakz 3:5b17e4656dd0 114 *
hudakz 3:5b17e4656dd0 115 * Example:
hudakz 3:5b17e4656dd0 116 \code
hudakz 3:5b17e4656dd0 117 uip_ipaddr_t hostaddr;
hudakz 3:5b17e4656dd0 118
hudakz 3:5b17e4656dd0 119 uip_gethostaddr(&hostaddr);
hudakz 3:5b17e4656dd0 120 \endcode
hudakz 3:5b17e4656dd0 121 * \param addr A pointer to a uip_ipaddr_t variable that will be
hudakz 3:5b17e4656dd0 122 * filled in with the currently configured IP address.
hudakz 3:5b17e4656dd0 123 *
hudakz 3:5b17e4656dd0 124 * \hideinitializer
hudakz 3:5b17e4656dd0 125 */
hudakz 4:d774541a34da 126 #define uip_gethostaddr(addr) uip_ipaddr_copy((addr), uip_hostaddr)
hudakz 3:5b17e4656dd0 127
hudakz 3:5b17e4656dd0 128 /**
hudakz 3:5b17e4656dd0 129 * Set the default router's IP address.
hudakz 3:5b17e4656dd0 130 *
hudakz 3:5b17e4656dd0 131 * \param addr A pointer to a uip_ipaddr_t variable containing the IP
hudakz 3:5b17e4656dd0 132 * address of the default router.
hudakz 3:5b17e4656dd0 133 *
hudakz 3:5b17e4656dd0 134 * \sa uip_ipaddr()
hudakz 3:5b17e4656dd0 135 *
hudakz 3:5b17e4656dd0 136 * \hideinitializer
hudakz 3:5b17e4656dd0 137 */
hudakz 4:d774541a34da 138 #define uip_setdraddr(addr) uip_ipaddr_copy(uip_draddr, (addr))
hudakz 3:5b17e4656dd0 139
hudakz 3:5b17e4656dd0 140 /**
hudakz 3:5b17e4656dd0 141 * Set the netmask.
hudakz 3:5b17e4656dd0 142 *
hudakz 3:5b17e4656dd0 143 * \param addr A pointer to a uip_ipaddr_t variable containing the IP
hudakz 3:5b17e4656dd0 144 * address of the netmask.
hudakz 3:5b17e4656dd0 145 *
hudakz 3:5b17e4656dd0 146 * \sa uip_ipaddr()
hudakz 3:5b17e4656dd0 147 *
hudakz 3:5b17e4656dd0 148 * \hideinitializer
hudakz 3:5b17e4656dd0 149 */
hudakz 4:d774541a34da 150 #define uip_setnetmask(addr) uip_ipaddr_copy(uip_netmask, (addr))
hudakz 3:5b17e4656dd0 151
hudakz 3:5b17e4656dd0 152
hudakz 3:5b17e4656dd0 153 /**
hudakz 3:5b17e4656dd0 154 * Get the default router's IP address.
hudakz 3:5b17e4656dd0 155 *
hudakz 3:5b17e4656dd0 156 * \param addr A pointer to a uip_ipaddr_t variable that will be
hudakz 3:5b17e4656dd0 157 * filled in with the IP address of the default router.
hudakz 3:5b17e4656dd0 158 *
hudakz 3:5b17e4656dd0 159 * \hideinitializer
hudakz 3:5b17e4656dd0 160 */
hudakz 4:d774541a34da 161 #define uip_getdraddr(addr) uip_ipaddr_copy((addr), uip_draddr)
hudakz 3:5b17e4656dd0 162
hudakz 3:5b17e4656dd0 163 /**
hudakz 3:5b17e4656dd0 164 * Get the netmask.
hudakz 3:5b17e4656dd0 165 *
hudakz 3:5b17e4656dd0 166 * \param addr A pointer to a uip_ipaddr_t variable that will be
hudakz 3:5b17e4656dd0 167 * filled in with the value of the netmask.
hudakz 3:5b17e4656dd0 168 *
hudakz 3:5b17e4656dd0 169 * \hideinitializer
hudakz 3:5b17e4656dd0 170 */
hudakz 4:d774541a34da 171 #define uip_getnetmask(addr) uip_ipaddr_copy((addr), uip_netmask)
hudakz 3:5b17e4656dd0 172
hudakz 3:5b17e4656dd0 173 /** @} */
hudakz 3:5b17e4656dd0 174
hudakz 3:5b17e4656dd0 175 /**
hudakz 3:5b17e4656dd0 176 * \defgroup uipinit uIP initialization functions
hudakz 3:5b17e4656dd0 177 * @{
hudakz 3:5b17e4656dd0 178 *
hudakz 3:5b17e4656dd0 179 * The uIP initialization functions are used for booting uIP.
hudakz 3:5b17e4656dd0 180 */
hudakz 4:d774541a34da 181
hudakz 3:5b17e4656dd0 182 /**
hudakz 3:5b17e4656dd0 183 * uIP initialization function.
hudakz 3:5b17e4656dd0 184 *
hudakz 3:5b17e4656dd0 185 * This function should be called at boot up to initilize the uIP
hudakz 3:5b17e4656dd0 186 * TCP/IP stack.
hudakz 3:5b17e4656dd0 187 */
hudakz 4:d774541a34da 188 void uip_init(void);
hudakz 3:5b17e4656dd0 189
hudakz 3:5b17e4656dd0 190 /**
hudakz 3:5b17e4656dd0 191 * uIP initialization function.
hudakz 3:5b17e4656dd0 192 *
hudakz 3:5b17e4656dd0 193 * This function may be used at boot time to set the initial ip_id.
hudakz 3:5b17e4656dd0 194 */
hudakz 4:d774541a34da 195 void uip_setipid(u16_t id);
hudakz 3:5b17e4656dd0 196
hudakz 3:5b17e4656dd0 197 /** @} */
hudakz 3:5b17e4656dd0 198
hudakz 3:5b17e4656dd0 199 /**
hudakz 3:5b17e4656dd0 200 * \defgroup uipdevfunc uIP device driver functions
hudakz 3:5b17e4656dd0 201 * @{
hudakz 3:5b17e4656dd0 202 *
hudakz 3:5b17e4656dd0 203 * These functions are used by a network device driver for interacting
hudakz 3:5b17e4656dd0 204 * with uIP.
hudakz 3:5b17e4656dd0 205 */
hudakz 3:5b17e4656dd0 206
hudakz 3:5b17e4656dd0 207 /**
hudakz 3:5b17e4656dd0 208 * Process an incoming packet.
hudakz 3:5b17e4656dd0 209 *
hudakz 3:5b17e4656dd0 210 * This function should be called when the device driver has received
hudakz 3:5b17e4656dd0 211 * a packet from the network. The packet from the device driver must
hudakz 3:5b17e4656dd0 212 * be present in the uip_buf buffer, and the length of the packet
hudakz 3:5b17e4656dd0 213 * should be placed in the uip_len variable.
hudakz 3:5b17e4656dd0 214 *
hudakz 3:5b17e4656dd0 215 * When the function returns, there may be an outbound packet placed
hudakz 3:5b17e4656dd0 216 * in the uip_buf packet buffer. If so, the uip_len variable is set to
hudakz 3:5b17e4656dd0 217 * the length of the packet. If no packet is to be sent out, the
hudakz 3:5b17e4656dd0 218 * uip_len variable is set to 0.
hudakz 3:5b17e4656dd0 219 *
hudakz 3:5b17e4656dd0 220 * The usual way of calling the function is presented by the source
hudakz 3:5b17e4656dd0 221 * code below.
hudakz 3:5b17e4656dd0 222 \code
hudakz 3:5b17e4656dd0 223 uip_len = devicedriver_poll();
hudakz 3:5b17e4656dd0 224 if(uip_len > 0) {
hudakz 3:5b17e4656dd0 225 uip_input();
hudakz 3:5b17e4656dd0 226 if(uip_len > 0) {
hudakz 3:5b17e4656dd0 227 devicedriver_send();
hudakz 3:5b17e4656dd0 228 }
hudakz 3:5b17e4656dd0 229 }
hudakz 3:5b17e4656dd0 230 \endcode
hudakz 3:5b17e4656dd0 231 *
hudakz 3:5b17e4656dd0 232 * \note If you are writing a uIP device driver that needs ARP
hudakz 3:5b17e4656dd0 233 * (Address Resolution Protocol), e.g., when running uIP over
hudakz 3:5b17e4656dd0 234 * Ethernet, you will need to call the uIP ARP code before calling
hudakz 3:5b17e4656dd0 235 * this function:
hudakz 3:5b17e4656dd0 236 \code
hudakz 3:5b17e4656dd0 237 #define BUF ((struct uip_eth_hdr *)&uip_buf[0])
hudakz 3:5b17e4656dd0 238 uip_len = ethernet_devicedrver_poll();
hudakz 3:5b17e4656dd0 239 if(uip_len > 0) {
hudakz 3:5b17e4656dd0 240 if(BUF->type == HTONS(UIP_ETHTYPE_IP)) {
hudakz 3:5b17e4656dd0 241 uip_arp_ipin();
hudakz 3:5b17e4656dd0 242 uip_input();
hudakz 3:5b17e4656dd0 243 if(uip_len > 0) {
hudakz 3:5b17e4656dd0 244 uip_arp_out();
hudakz 4:d774541a34da 245 ethernet_devicedriver_send();
hudakz 3:5b17e4656dd0 246 }
hudakz 3:5b17e4656dd0 247 } else if(BUF->type == HTONS(UIP_ETHTYPE_ARP)) {
hudakz 3:5b17e4656dd0 248 uip_arp_arpin();
hudakz 3:5b17e4656dd0 249 if(uip_len > 0) {
hudakz 4:d774541a34da 250 ethernet_devicedriver_send();
hudakz 3:5b17e4656dd0 251 }
hudakz 3:5b17e4656dd0 252 }
hudakz 3:5b17e4656dd0 253 \endcode
hudakz 3:5b17e4656dd0 254 *
hudakz 3:5b17e4656dd0 255 * \hideinitializer
hudakz 3:5b17e4656dd0 256 */
hudakz 4:d774541a34da 257 #define uip_input() uip_process(UIP_DATA)
hudakz 3:5b17e4656dd0 258
hudakz 3:5b17e4656dd0 259 /**
hudakz 3:5b17e4656dd0 260 * Periodic processing for a connection identified by its number.
hudakz 3:5b17e4656dd0 261 *
hudakz 3:5b17e4656dd0 262 * This function does the necessary periodic processing (timers,
hudakz 3:5b17e4656dd0 263 * polling) for a uIP TCP conneciton, and should be called when the
hudakz 3:5b17e4656dd0 264 * periodic uIP timer goes off. It should be called for every
hudakz 3:5b17e4656dd0 265 * connection, regardless of whether they are open of closed.
hudakz 3:5b17e4656dd0 266 *
hudakz 3:5b17e4656dd0 267 * When the function returns, it may have an outbound packet waiting
hudakz 3:5b17e4656dd0 268 * for service in the uIP packet buffer, and if so the uip_len
hudakz 3:5b17e4656dd0 269 * variable is set to a value larger than zero. The device driver
hudakz 3:5b17e4656dd0 270 * should be called to send out the packet.
hudakz 3:5b17e4656dd0 271 *
hudakz 3:5b17e4656dd0 272 * The ususal way of calling the function is through a for() loop like
hudakz 3:5b17e4656dd0 273 * this:
hudakz 3:5b17e4656dd0 274 \code
hudakz 3:5b17e4656dd0 275 for(i = 0; i < UIP_CONNS; ++i) {
hudakz 3:5b17e4656dd0 276 uip_periodic(i);
hudakz 3:5b17e4656dd0 277 if(uip_len > 0) {
hudakz 3:5b17e4656dd0 278 devicedriver_send();
hudakz 3:5b17e4656dd0 279 }
hudakz 3:5b17e4656dd0 280 }
hudakz 3:5b17e4656dd0 281 \endcode
hudakz 3:5b17e4656dd0 282 *
hudakz 3:5b17e4656dd0 283 * \note If you are writing a uIP device driver that needs ARP
hudakz 3:5b17e4656dd0 284 * (Address Resolution Protocol), e.g., when running uIP over
hudakz 3:5b17e4656dd0 285 * Ethernet, you will need to call the uip_arp_out() function before
hudakz 3:5b17e4656dd0 286 * calling the device driver:
hudakz 3:5b17e4656dd0 287 \code
hudakz 3:5b17e4656dd0 288 for(i = 0; i < UIP_CONNS; ++i) {
hudakz 3:5b17e4656dd0 289 uip_periodic(i);
hudakz 3:5b17e4656dd0 290 if(uip_len > 0) {
hudakz 3:5b17e4656dd0 291 uip_arp_out();
hudakz 3:5b17e4656dd0 292 ethernet_devicedriver_send();
hudakz 3:5b17e4656dd0 293 }
hudakz 3:5b17e4656dd0 294 }
hudakz 3:5b17e4656dd0 295 \endcode
hudakz 3:5b17e4656dd0 296 *
hudakz 3:5b17e4656dd0 297 * \param conn The number of the connection which is to be periodically polled.
hudakz 3:5b17e4656dd0 298 *
hudakz 3:5b17e4656dd0 299 * \hideinitializer
hudakz 3:5b17e4656dd0 300 */
hudakz 4:d774541a34da 301 #define uip_periodic(conn) do { uip_conn = &uip_conns[conn]; \
hudakz 4:d774541a34da 302 uip_process(UIP_TIMER); } while (0)
hudakz 3:5b17e4656dd0 303
hudakz 3:5b17e4656dd0 304 /**
hudakz 3:5b17e4656dd0 305 *
hudakz 3:5b17e4656dd0 306 *
hudakz 3:5b17e4656dd0 307 */
hudakz 4:d774541a34da 308 #define uip_conn_active(conn) (uip_conns[conn].tcpstateflags != UIP_CLOSED)
hudakz 3:5b17e4656dd0 309
hudakz 3:5b17e4656dd0 310 /**
hudakz 3:5b17e4656dd0 311 * Perform periodic processing for a connection identified by a pointer
hudakz 3:5b17e4656dd0 312 * to its structure.
hudakz 3:5b17e4656dd0 313 *
hudakz 3:5b17e4656dd0 314 * Same as uip_periodic() but takes a pointer to the actual uip_conn
hudakz 3:5b17e4656dd0 315 * struct instead of an integer as its argument. This function can be
hudakz 3:5b17e4656dd0 316 * used to force periodic processing of a specific connection.
hudakz 3:5b17e4656dd0 317 *
hudakz 3:5b17e4656dd0 318 * \param conn A pointer to the uip_conn struct for the connection to
hudakz 3:5b17e4656dd0 319 * be processed.
hudakz 3:5b17e4656dd0 320 *
hudakz 3:5b17e4656dd0 321 * \hideinitializer
hudakz 3:5b17e4656dd0 322 */
hudakz 4:d774541a34da 323 #define uip_periodic_conn(conn) do { uip_conn = conn; \
hudakz 4:d774541a34da 324 uip_process(UIP_TIMER); } while (0)
hudakz 3:5b17e4656dd0 325
hudakz 3:5b17e4656dd0 326 /**
hudakz 3:5b17e4656dd0 327 * Reuqest that a particular connection should be polled.
hudakz 3:5b17e4656dd0 328 *
hudakz 3:5b17e4656dd0 329 * Similar to uip_periodic_conn() but does not perform any timer
hudakz 3:5b17e4656dd0 330 * processing. The application is polled for new data.
hudakz 3:5b17e4656dd0 331 *
hudakz 3:5b17e4656dd0 332 * \param conn A pointer to the uip_conn struct for the connection to
hudakz 3:5b17e4656dd0 333 * be processed.
hudakz 3:5b17e4656dd0 334 *
hudakz 3:5b17e4656dd0 335 * \hideinitializer
hudakz 3:5b17e4656dd0 336 */
hudakz 4:d774541a34da 337 #define uip_poll_conn(conn) do { uip_conn = conn; \
hudakz 4:d774541a34da 338 uip_process(UIP_POLL_REQUEST); } while (0)
hudakz 3:5b17e4656dd0 339
hudakz 3:5b17e4656dd0 340
hudakz 4:d774541a34da 341 #if UIP_UDP
hudakz 3:5b17e4656dd0 342 /**
hudakz 3:5b17e4656dd0 343 * Periodic processing for a UDP connection identified by its number.
hudakz 3:5b17e4656dd0 344 *
hudakz 3:5b17e4656dd0 345 * This function is essentially the same as uip_periodic(), but for
hudakz 3:5b17e4656dd0 346 * UDP connections. It is called in a similar fashion as the
hudakz 3:5b17e4656dd0 347 * uip_periodic() function:
hudakz 3:5b17e4656dd0 348 \code
hudakz 3:5b17e4656dd0 349 for(i = 0; i < UIP_UDP_CONNS; i++) {
hudakz 3:5b17e4656dd0 350 uip_udp_periodic(i);
hudakz 3:5b17e4656dd0 351 if(uip_len > 0) {
hudakz 3:5b17e4656dd0 352 devicedriver_send();
hudakz 3:5b17e4656dd0 353 }
hudakz 3:5b17e4656dd0 354 }
hudakz 3:5b17e4656dd0 355 \endcode
hudakz 3:5b17e4656dd0 356 *
hudakz 3:5b17e4656dd0 357 * \note As for the uip_periodic() function, special care has to be
hudakz 3:5b17e4656dd0 358 * taken when using uIP together with ARP and Ethernet:
hudakz 3:5b17e4656dd0 359 \code
hudakz 3:5b17e4656dd0 360 for(i = 0; i < UIP_UDP_CONNS; i++) {
hudakz 3:5b17e4656dd0 361 uip_udp_periodic(i);
hudakz 3:5b17e4656dd0 362 if(uip_len > 0) {
hudakz 3:5b17e4656dd0 363 uip_arp_out();
hudakz 3:5b17e4656dd0 364 ethernet_devicedriver_send();
hudakz 3:5b17e4656dd0 365 }
hudakz 3:5b17e4656dd0 366 }
hudakz 3:5b17e4656dd0 367 \endcode
hudakz 3:5b17e4656dd0 368 *
hudakz 3:5b17e4656dd0 369 * \param conn The number of the UDP connection to be processed.
hudakz 3:5b17e4656dd0 370 *
hudakz 3:5b17e4656dd0 371 * \hideinitializer
hudakz 3:5b17e4656dd0 372 */
hudakz 4:d774541a34da 373 #define uip_udp_periodic(conn) do { uip_udp_conn = &uip_udp_conns[conn]; \
hudakz 4:d774541a34da 374 uip_process(UIP_UDP_TIMER); } while (0)
hudakz 3:5b17e4656dd0 375
hudakz 3:5b17e4656dd0 376 /**
hudakz 3:5b17e4656dd0 377 * Periodic processing for a UDP connection identified by a pointer to
hudakz 3:5b17e4656dd0 378 * its structure.
hudakz 3:5b17e4656dd0 379 *
hudakz 3:5b17e4656dd0 380 * Same as uip_udp_periodic() but takes a pointer to the actual
hudakz 3:5b17e4656dd0 381 * uip_conn struct instead of an integer as its argument. This
hudakz 3:5b17e4656dd0 382 * function can be used to force periodic processing of a specific
hudakz 3:5b17e4656dd0 383 * connection.
hudakz 3:5b17e4656dd0 384 *
hudakz 3:5b17e4656dd0 385 * \param conn A pointer to the uip_udp_conn struct for the connection
hudakz 3:5b17e4656dd0 386 * to be processed.
hudakz 3:5b17e4656dd0 387 *
hudakz 3:5b17e4656dd0 388 * \hideinitializer
hudakz 3:5b17e4656dd0 389 */
hudakz 4:d774541a34da 390 #define uip_udp_periodic_conn(conn) do { uip_udp_conn = conn; \
hudakz 4:d774541a34da 391 uip_process(UIP_UDP_TIMER); } while (0)
hudakz 3:5b17e4656dd0 392
hudakz 3:5b17e4656dd0 393
hudakz 4:d774541a34da 394 #endif /* UIP_UDP */
hudakz 4:d774541a34da 395
hudakz 4:d774541a34da 396 /**
hudakz 3:5b17e4656dd0 397 * The uIP packet buffer.
hudakz 3:5b17e4656dd0 398 *
hudakz 3:5b17e4656dd0 399 * The uip_buf array is used to hold incoming and outgoing
hudakz 3:5b17e4656dd0 400 * packets. The device driver should place incoming data into this
hudakz 3:5b17e4656dd0 401 * buffer. When sending data, the device driver should read the link
hudakz 3:5b17e4656dd0 402 * level headers and the TCP/IP headers from this buffer. The size of
hudakz 3:5b17e4656dd0 403 * the link level headers is configured by the UIP_LLH_LEN define.
hudakz 3:5b17e4656dd0 404 *
hudakz 3:5b17e4656dd0 405 * \note The application data need not be placed in this buffer, so
hudakz 3:5b17e4656dd0 406 * the device driver must read it from the place pointed to by the
hudakz 3:5b17e4656dd0 407 * uip_appdata pointer as illustrated by the following example:
hudakz 3:5b17e4656dd0 408 \code
hudakz 3:5b17e4656dd0 409 void
hudakz 3:5b17e4656dd0 410 devicedriver_send(void)
hudakz 3:5b17e4656dd0 411 {
hudakz 3:5b17e4656dd0 412 hwsend(&uip_buf[0], UIP_LLH_LEN);
hudakz 3:5b17e4656dd0 413 if(uip_len <= UIP_LLH_LEN + UIP_TCPIP_HLEN) {
hudakz 3:5b17e4656dd0 414 hwsend(&uip_buf[UIP_LLH_LEN], uip_len - UIP_LLH_LEN);
hudakz 3:5b17e4656dd0 415 } else {
hudakz 3:5b17e4656dd0 416 hwsend(&uip_buf[UIP_LLH_LEN], UIP_TCPIP_HLEN);
hudakz 3:5b17e4656dd0 417 hwsend(uip_appdata, uip_len - UIP_TCPIP_HLEN - UIP_LLH_LEN);
hudakz 3:5b17e4656dd0 418 }
hudakz 3:5b17e4656dd0 419 }
hudakz 3:5b17e4656dd0 420 \endcode
hudakz 3:5b17e4656dd0 421 */
hudakz 4:d774541a34da 422 extern u8_t uip_buf[UIP_BUFSIZE+2];
hudakz 3:5b17e4656dd0 423
hudakz 3:5b17e4656dd0 424 /** @} */
hudakz 3:5b17e4656dd0 425
hudakz 3:5b17e4656dd0 426 /*---------------------------------------------------------------------------*/
hudakz 3:5b17e4656dd0 427 /* Functions that are used by the uIP application program. Opening and
hudakz 3:5b17e4656dd0 428 * closing connections, sending and receiving data, etc. is all
hudakz 3:5b17e4656dd0 429 * handled by the functions below.
hudakz 3:5b17e4656dd0 430 */
hudakz 3:5b17e4656dd0 431 /**
hudakz 3:5b17e4656dd0 432 * \defgroup uipappfunc uIP application functions
hudakz 3:5b17e4656dd0 433 * @{
hudakz 3:5b17e4656dd0 434 *
hudakz 3:5b17e4656dd0 435 * Functions used by an application running of top of uIP.
hudakz 3:5b17e4656dd0 436 */
hudakz 4:d774541a34da 437
hudakz 3:5b17e4656dd0 438 /**
hudakz 3:5b17e4656dd0 439 * Start listening to the specified port.
hudakz 3:5b17e4656dd0 440 *
hudakz 3:5b17e4656dd0 441 * \note Since this function expects the port number in network byte
hudakz 3:5b17e4656dd0 442 * order, a conversion using HTONS() or htons() is necessary.
hudakz 3:5b17e4656dd0 443 *
hudakz 3:5b17e4656dd0 444 \code
hudakz 3:5b17e4656dd0 445 uip_listen(HTONS(80));
hudakz 3:5b17e4656dd0 446 \endcode
hudakz 3:5b17e4656dd0 447 *
hudakz 3:5b17e4656dd0 448 * \param port A 16-bit port number in network byte order.
hudakz 3:5b17e4656dd0 449 */
hudakz 4:d774541a34da 450 void uip_listen(u16_t port);
hudakz 3:5b17e4656dd0 451
hudakz 3:5b17e4656dd0 452 /**
hudakz 3:5b17e4656dd0 453 * Stop listening to the specified port.
hudakz 3:5b17e4656dd0 454 *
hudakz 3:5b17e4656dd0 455 * \note Since this function expects the port number in network byte
hudakz 3:5b17e4656dd0 456 * order, a conversion using HTONS() or htons() is necessary.
hudakz 3:5b17e4656dd0 457 *
hudakz 3:5b17e4656dd0 458 \code
hudakz 3:5b17e4656dd0 459 uip_unlisten(HTONS(80));
hudakz 3:5b17e4656dd0 460 \endcode
hudakz 3:5b17e4656dd0 461 *
hudakz 3:5b17e4656dd0 462 * \param port A 16-bit port number in network byte order.
hudakz 3:5b17e4656dd0 463 */
hudakz 4:d774541a34da 464 void uip_unlisten(u16_t port);
hudakz 3:5b17e4656dd0 465
hudakz 3:5b17e4656dd0 466 /**
hudakz 3:5b17e4656dd0 467 * Connect to a remote host using TCP.
hudakz 3:5b17e4656dd0 468 *
hudakz 3:5b17e4656dd0 469 * This function is used to start a new connection to the specified
hudakz 3:5b17e4656dd0 470 * port on the specied host. It allocates a new connection identifier,
hudakz 3:5b17e4656dd0 471 * sets the connection to the SYN_SENT state and sets the
hudakz 3:5b17e4656dd0 472 * retransmission timer to 0. This will cause a TCP SYN segment to be
hudakz 3:5b17e4656dd0 473 * sent out the next time this connection is periodically processed,
hudakz 3:5b17e4656dd0 474 * which usually is done within 0.5 seconds after the call to
hudakz 3:5b17e4656dd0 475 * uip_connect().
hudakz 3:5b17e4656dd0 476 *
hudakz 3:5b17e4656dd0 477 * \note This function is avaliable only if support for active open
hudakz 3:5b17e4656dd0 478 * has been configured by defining UIP_ACTIVE_OPEN to 1 in uipopt.h.
hudakz 3:5b17e4656dd0 479 *
hudakz 3:5b17e4656dd0 480 * \note Since this function requires the port number to be in network
hudakz 3:5b17e4656dd0 481 * byte order, a conversion using HTONS() or htons() is necessary.
hudakz 3:5b17e4656dd0 482 *
hudakz 3:5b17e4656dd0 483 \code
hudakz 3:5b17e4656dd0 484 uip_ipaddr_t ipaddr;
hudakz 3:5b17e4656dd0 485
hudakz 3:5b17e4656dd0 486 uip_ipaddr(&ipaddr, 192,168,1,2);
hudakz 3:5b17e4656dd0 487 uip_connect(&ipaddr, HTONS(80));
hudakz 3:5b17e4656dd0 488 \endcode
hudakz 3:5b17e4656dd0 489 *
hudakz 3:5b17e4656dd0 490 * \param ripaddr The IP address of the remote hot.
hudakz 3:5b17e4656dd0 491 *
hudakz 3:5b17e4656dd0 492 * \param port A 16-bit port number in network byte order.
hudakz 3:5b17e4656dd0 493 *
hudakz 3:5b17e4656dd0 494 * \return A pointer to the uIP connection identifier for the new connection,
hudakz 3:5b17e4656dd0 495 * or NULL if no connection could be allocated.
hudakz 3:5b17e4656dd0 496 *
hudakz 3:5b17e4656dd0 497 */
hudakz 4:d774541a34da 498 struct uip_conn *uip_connect(uip_ipaddr_t *ripaddr, u16_t port);
hudakz 4:d774541a34da 499
hudakz 4:d774541a34da 500
hudakz 3:5b17e4656dd0 501
hudakz 3:5b17e4656dd0 502 /**
hudakz 3:5b17e4656dd0 503 * \internal
hudakz 3:5b17e4656dd0 504 *
hudakz 3:5b17e4656dd0 505 * Check if a connection has outstanding (i.e., unacknowledged) data.
hudakz 3:5b17e4656dd0 506 *
hudakz 3:5b17e4656dd0 507 * \param conn A pointer to the uip_conn structure for the connection.
hudakz 3:5b17e4656dd0 508 *
hudakz 3:5b17e4656dd0 509 * \hideinitializer
hudakz 3:5b17e4656dd0 510 */
hudakz 4:d774541a34da 511 #define uip_outstanding(conn) ((conn)->len)
hudakz 3:5b17e4656dd0 512
hudakz 3:5b17e4656dd0 513 /**
hudakz 3:5b17e4656dd0 514 * Send data on the current connection.
hudakz 3:5b17e4656dd0 515 *
hudakz 3:5b17e4656dd0 516 * This function is used to send out a single segment of TCP
hudakz 3:5b17e4656dd0 517 * data. Only applications that have been invoked by uIP for event
hudakz 3:5b17e4656dd0 518 * processing can send data.
hudakz 3:5b17e4656dd0 519 *
hudakz 3:5b17e4656dd0 520 * The amount of data that actually is sent out after a call to this
hudakz 3:5b17e4656dd0 521 * funcion is determined by the maximum amount of data TCP allows. uIP
hudakz 3:5b17e4656dd0 522 * will automatically crop the data so that only the appropriate
hudakz 3:5b17e4656dd0 523 * amount of data is sent. The function uip_mss() can be used to query
hudakz 3:5b17e4656dd0 524 * uIP for the amount of data that actually will be sent.
hudakz 3:5b17e4656dd0 525 *
hudakz 3:5b17e4656dd0 526 * \note This function does not guarantee that the sent data will
hudakz 3:5b17e4656dd0 527 * arrive at the destination. If the data is lost in the network, the
hudakz 3:5b17e4656dd0 528 * application will be invoked with the uip_rexmit() event being
hudakz 3:5b17e4656dd0 529 * set. The application will then have to resend the data using this
hudakz 3:5b17e4656dd0 530 * function.
hudakz 3:5b17e4656dd0 531 *
hudakz 3:5b17e4656dd0 532 * \param data A pointer to the data which is to be sent.
hudakz 3:5b17e4656dd0 533 *
hudakz 3:5b17e4656dd0 534 * \param len The maximum amount of data bytes to be sent.
hudakz 3:5b17e4656dd0 535 *
hudakz 3:5b17e4656dd0 536 * \hideinitializer
hudakz 3:5b17e4656dd0 537 */
hudakz 4:d774541a34da 538 void uip_send(const void *data, int len);
hudakz 3:5b17e4656dd0 539
hudakz 3:5b17e4656dd0 540 /**
hudakz 3:5b17e4656dd0 541 * The length of any incoming data that is currently avaliable (if avaliable)
hudakz 3:5b17e4656dd0 542 * in the uip_appdata buffer.
hudakz 3:5b17e4656dd0 543 *
hudakz 3:5b17e4656dd0 544 * The test function uip_data() must first be used to check if there
hudakz 3:5b17e4656dd0 545 * is any data available at all.
hudakz 3:5b17e4656dd0 546 *
hudakz 3:5b17e4656dd0 547 * \hideinitializer
hudakz 3:5b17e4656dd0 548 */
hudakz 3:5b17e4656dd0 549 /*void uip_datalen(void);*/
hudakz 4:d774541a34da 550 #define uip_datalen() uip_len
hudakz 3:5b17e4656dd0 551
hudakz 3:5b17e4656dd0 552 /**
hudakz 3:5b17e4656dd0 553 * The length of any out-of-band data (urgent data) that has arrived
hudakz 3:5b17e4656dd0 554 * on the connection.
hudakz 3:5b17e4656dd0 555 *
hudakz 3:5b17e4656dd0 556 * \note The configuration parameter UIP_URGDATA must be set for this
hudakz 3:5b17e4656dd0 557 * function to be enabled.
hudakz 3:5b17e4656dd0 558 *
hudakz 3:5b17e4656dd0 559 * \hideinitializer
hudakz 3:5b17e4656dd0 560 */
hudakz 4:d774541a34da 561 #define uip_urgdatalen() uip_urglen
hudakz 3:5b17e4656dd0 562
hudakz 3:5b17e4656dd0 563 /**
hudakz 3:5b17e4656dd0 564 * Close the current connection.
hudakz 3:5b17e4656dd0 565 *
hudakz 3:5b17e4656dd0 566 * This function will close the current connection in a nice way.
hudakz 3:5b17e4656dd0 567 *
hudakz 3:5b17e4656dd0 568 * \hideinitializer
hudakz 3:5b17e4656dd0 569 */
hudakz 4:d774541a34da 570 #define uip_close() (uip_flags = UIP_CLOSE)
hudakz 3:5b17e4656dd0 571
hudakz 3:5b17e4656dd0 572 /**
hudakz 3:5b17e4656dd0 573 * Abort the current connection.
hudakz 3:5b17e4656dd0 574 *
hudakz 3:5b17e4656dd0 575 * This function will abort (reset) the current connection, and is
hudakz 3:5b17e4656dd0 576 * usually used when an error has occured that prevents using the
hudakz 3:5b17e4656dd0 577 * uip_close() function.
hudakz 3:5b17e4656dd0 578 *
hudakz 3:5b17e4656dd0 579 * \hideinitializer
hudakz 3:5b17e4656dd0 580 */
hudakz 4:d774541a34da 581 #define uip_abort() (uip_flags = UIP_ABORT)
hudakz 3:5b17e4656dd0 582
hudakz 3:5b17e4656dd0 583 /**
hudakz 3:5b17e4656dd0 584 * Tell the sending host to stop sending data.
hudakz 3:5b17e4656dd0 585 *
hudakz 3:5b17e4656dd0 586 * This function will close our receiver's window so that we stop
hudakz 3:5b17e4656dd0 587 * receiving data for the current connection.
hudakz 3:5b17e4656dd0 588 *
hudakz 3:5b17e4656dd0 589 * \hideinitializer
hudakz 3:5b17e4656dd0 590 */
hudakz 4:d774541a34da 591 #define uip_stop() (uip_conn->tcpstateflags |= UIP_STOPPED)
hudakz 3:5b17e4656dd0 592
hudakz 3:5b17e4656dd0 593 /**
hudakz 3:5b17e4656dd0 594 * Find out if the current connection has been previously stopped with
hudakz 3:5b17e4656dd0 595 * uip_stop().
hudakz 3:5b17e4656dd0 596 *
hudakz 3:5b17e4656dd0 597 * \hideinitializer
hudakz 3:5b17e4656dd0 598 */
hudakz 4:d774541a34da 599 #define uip_stopped(conn) ((conn)->tcpstateflags & UIP_STOPPED)
hudakz 3:5b17e4656dd0 600
hudakz 3:5b17e4656dd0 601 /**
hudakz 3:5b17e4656dd0 602 * Restart the current connection, if is has previously been stopped
hudakz 3:5b17e4656dd0 603 * with uip_stop().
hudakz 3:5b17e4656dd0 604 *
hudakz 3:5b17e4656dd0 605 * This function will open the receiver's window again so that we
hudakz 3:5b17e4656dd0 606 * start receiving data for the current connection.
hudakz 3:5b17e4656dd0 607 *
hudakz 3:5b17e4656dd0 608 * \hideinitializer
hudakz 3:5b17e4656dd0 609 */
hudakz 4:d774541a34da 610 #define uip_restart() do { uip_flags |= UIP_NEWDATA; \
hudakz 4:d774541a34da 611 uip_conn->tcpstateflags &= ~UIP_STOPPED; \
hudakz 4:d774541a34da 612 } while(0)
hudakz 3:5b17e4656dd0 613
hudakz 3:5b17e4656dd0 614
hudakz 4:d774541a34da 615 /* uIP tests that can be made to determine in what state the current
hudakz 3:5b17e4656dd0 616 connection is, and what the application function should do. */
hudakz 3:5b17e4656dd0 617
hudakz 3:5b17e4656dd0 618 /**
hudakz 3:5b17e4656dd0 619 * Is the current connection a UDP connection?
hudakz 3:5b17e4656dd0 620 *
hudakz 3:5b17e4656dd0 621 * This function checks whether the current connection is a UDP connection.
hudakz 3:5b17e4656dd0 622 *
hudakz 3:5b17e4656dd0 623 * \hideinitializer
hudakz 3:5b17e4656dd0 624 *
hudakz 3:5b17e4656dd0 625 */
hudakz 4:d774541a34da 626 #define uip_udpconnection() (uip_conn == NULL)
hudakz 3:5b17e4656dd0 627
hudakz 3:5b17e4656dd0 628 /**
hudakz 3:5b17e4656dd0 629 * Is new incoming data available?
hudakz 3:5b17e4656dd0 630 *
hudakz 3:5b17e4656dd0 631 * Will reduce to non-zero if there is new data for the application
hudakz 3:5b17e4656dd0 632 * present at the uip_appdata pointer. The size of the data is
hudakz 3:5b17e4656dd0 633 * avaliable through the uip_len variable.
hudakz 3:5b17e4656dd0 634 *
hudakz 3:5b17e4656dd0 635 * \hideinitializer
hudakz 3:5b17e4656dd0 636 */
hudakz 4:d774541a34da 637 #define uip_newdata() (uip_flags & UIP_NEWDATA)
hudakz 3:5b17e4656dd0 638
hudakz 3:5b17e4656dd0 639 /**
hudakz 3:5b17e4656dd0 640 * Has previously sent data been acknowledged?
hudakz 3:5b17e4656dd0 641 *
hudakz 3:5b17e4656dd0 642 * Will reduce to non-zero if the previously sent data has been
hudakz 3:5b17e4656dd0 643 * acknowledged by the remote host. This means that the application
hudakz 3:5b17e4656dd0 644 * can send new data.
hudakz 3:5b17e4656dd0 645 *
hudakz 3:5b17e4656dd0 646 * \hideinitializer
hudakz 3:5b17e4656dd0 647 */
hudakz 4:d774541a34da 648 #define uip_acked() (uip_flags & UIP_ACKDATA)
hudakz 3:5b17e4656dd0 649
hudakz 3:5b17e4656dd0 650 /**
hudakz 3:5b17e4656dd0 651 * Has the connection just been connected?
hudakz 3:5b17e4656dd0 652 *
hudakz 3:5b17e4656dd0 653 * Reduces to non-zero if the current connection has been connected to
hudakz 3:5b17e4656dd0 654 * a remote host. This will happen both if the connection has been
hudakz 3:5b17e4656dd0 655 * actively opened (with uip_connect()) or passively opened (with
hudakz 3:5b17e4656dd0 656 * uip_listen()).
hudakz 3:5b17e4656dd0 657 *
hudakz 3:5b17e4656dd0 658 * \hideinitializer
hudakz 3:5b17e4656dd0 659 */
hudakz 4:d774541a34da 660 #define uip_connected() (uip_flags & UIP_CONNECTED)
hudakz 3:5b17e4656dd0 661
hudakz 3:5b17e4656dd0 662 /**
hudakz 3:5b17e4656dd0 663 * Has the connection been closed by the other end?
hudakz 3:5b17e4656dd0 664 *
hudakz 3:5b17e4656dd0 665 * Is non-zero if the connection has been closed by the remote
hudakz 3:5b17e4656dd0 666 * host. The application may then do the necessary clean-ups.
hudakz 3:5b17e4656dd0 667 *
hudakz 3:5b17e4656dd0 668 * \hideinitializer
hudakz 3:5b17e4656dd0 669 */
hudakz 4:d774541a34da 670 #define uip_closed() (uip_flags & UIP_CLOSE)
hudakz 3:5b17e4656dd0 671
hudakz 3:5b17e4656dd0 672 /**
hudakz 3:5b17e4656dd0 673 * Has the connection been aborted by the other end?
hudakz 3:5b17e4656dd0 674 *
hudakz 3:5b17e4656dd0 675 * Non-zero if the current connection has been aborted (reset) by the
hudakz 3:5b17e4656dd0 676 * remote host.
hudakz 3:5b17e4656dd0 677 *
hudakz 3:5b17e4656dd0 678 * \hideinitializer
hudakz 3:5b17e4656dd0 679 */
hudakz 4:d774541a34da 680 #define uip_aborted() (uip_flags & UIP_ABORT)
hudakz 3:5b17e4656dd0 681
hudakz 3:5b17e4656dd0 682 /**
hudakz 3:5b17e4656dd0 683 * Has the connection timed out?
hudakz 3:5b17e4656dd0 684 *
hudakz 3:5b17e4656dd0 685 * Non-zero if the current connection has been aborted due to too many
hudakz 3:5b17e4656dd0 686 * retransmissions.
hudakz 3:5b17e4656dd0 687 *
hudakz 3:5b17e4656dd0 688 * \hideinitializer
hudakz 3:5b17e4656dd0 689 */
hudakz 4:d774541a34da 690 #define uip_timedout() (uip_flags & UIP_TIMEDOUT)
hudakz 3:5b17e4656dd0 691
hudakz 3:5b17e4656dd0 692 /**
hudakz 3:5b17e4656dd0 693 * Do we need to retransmit previously data?
hudakz 3:5b17e4656dd0 694 *
hudakz 3:5b17e4656dd0 695 * Reduces to non-zero if the previously sent data has been lost in
hudakz 3:5b17e4656dd0 696 * the network, and the application should retransmit it. The
hudakz 3:5b17e4656dd0 697 * application should send the exact same data as it did the last
hudakz 3:5b17e4656dd0 698 * time, using the uip_send() function.
hudakz 3:5b17e4656dd0 699 *
hudakz 3:5b17e4656dd0 700 * \hideinitializer
hudakz 3:5b17e4656dd0 701 */
hudakz 4:d774541a34da 702 #define uip_rexmit() (uip_flags & UIP_REXMIT)
hudakz 3:5b17e4656dd0 703
hudakz 3:5b17e4656dd0 704 /**
hudakz 3:5b17e4656dd0 705 * Is the connection being polled by uIP?
hudakz 3:5b17e4656dd0 706 *
hudakz 3:5b17e4656dd0 707 * Is non-zero if the reason the application is invoked is that the
hudakz 3:5b17e4656dd0 708 * current connection has been idle for a while and should be
hudakz 3:5b17e4656dd0 709 * polled.
hudakz 3:5b17e4656dd0 710 *
hudakz 3:5b17e4656dd0 711 * The polling event can be used for sending data without having to
hudakz 3:5b17e4656dd0 712 * wait for the remote host to send data.
hudakz 3:5b17e4656dd0 713 *
hudakz 3:5b17e4656dd0 714 * \hideinitializer
hudakz 3:5b17e4656dd0 715 */
hudakz 4:d774541a34da 716 #define uip_poll() (uip_flags & UIP_POLL)
hudakz 3:5b17e4656dd0 717
hudakz 3:5b17e4656dd0 718 /**
hudakz 3:5b17e4656dd0 719 * Get the initial maxium segment size (MSS) of the current
hudakz 3:5b17e4656dd0 720 * connection.
hudakz 3:5b17e4656dd0 721 *
hudakz 3:5b17e4656dd0 722 * \hideinitializer
hudakz 3:5b17e4656dd0 723 */
hudakz 4:d774541a34da 724 #define uip_initialmss() (uip_conn->initialmss)
hudakz 3:5b17e4656dd0 725
hudakz 3:5b17e4656dd0 726 /**
hudakz 3:5b17e4656dd0 727 * Get the current maxium segment size that can be sent on the current
hudakz 3:5b17e4656dd0 728 * connection.
hudakz 3:5b17e4656dd0 729 *
hudakz 3:5b17e4656dd0 730 * The current maxiumum segment size that can be sent on the
hudakz 3:5b17e4656dd0 731 * connection is computed from the receiver's window and the MSS of
hudakz 3:5b17e4656dd0 732 * the connection (which also is available by calling
hudakz 3:5b17e4656dd0 733 * uip_initialmss()).
hudakz 3:5b17e4656dd0 734 *
hudakz 3:5b17e4656dd0 735 * \hideinitializer
hudakz 3:5b17e4656dd0 736 */
hudakz 4:d774541a34da 737 #define uip_mss() (uip_conn->mss)
hudakz 3:5b17e4656dd0 738
hudakz 4:d774541a34da 739 /**
hudakz 3:5b17e4656dd0 740 * Set up a new UDP connection.
hudakz 3:5b17e4656dd0 741 *
hudakz 3:5b17e4656dd0 742 * This function sets up a new UDP connection. The function will
hudakz 3:5b17e4656dd0 743 * automatically allocate an unused local port for the new
hudakz 3:5b17e4656dd0 744 * connection. However, another port can be chosen by using the
hudakz 3:5b17e4656dd0 745 * uip_udp_bind() call, after the uip_udp_new() function has been
hudakz 3:5b17e4656dd0 746 * called.
hudakz 3:5b17e4656dd0 747 *
hudakz 3:5b17e4656dd0 748 * Example:
hudakz 3:5b17e4656dd0 749 \code
hudakz 3:5b17e4656dd0 750 uip_ipaddr_t addr;
hudakz 3:5b17e4656dd0 751 struct uip_udp_conn *c;
hudakz 4:d774541a34da 752
hudakz 3:5b17e4656dd0 753 uip_ipaddr(&addr, 192,168,2,1);
hudakz 3:5b17e4656dd0 754 c = uip_udp_new(&addr, HTONS(12345));
hudakz 3:5b17e4656dd0 755 if(c != NULL) {
hudakz 3:5b17e4656dd0 756 uip_udp_bind(c, HTONS(12344));
hudakz 3:5b17e4656dd0 757 }
hudakz 3:5b17e4656dd0 758 \endcode
hudakz 3:5b17e4656dd0 759 * \param ripaddr The IP address of the remote host.
hudakz 3:5b17e4656dd0 760 *
hudakz 3:5b17e4656dd0 761 * \param rport The remote port number in network byte order.
hudakz 3:5b17e4656dd0 762 *
hudakz 3:5b17e4656dd0 763 * \return The uip_udp_conn structure for the new connection or NULL
hudakz 3:5b17e4656dd0 764 * if no connection could be allocated.
hudakz 3:5b17e4656dd0 765 */
hudakz 4:d774541a34da 766 struct uip_udp_conn *uip_udp_new(uip_ipaddr_t *ripaddr, u16_t rport);
hudakz 3:5b17e4656dd0 767
hudakz 3:5b17e4656dd0 768 /**
hudakz 3:5b17e4656dd0 769 * Removed a UDP connection.
hudakz 3:5b17e4656dd0 770 *
hudakz 3:5b17e4656dd0 771 * \param conn A pointer to the uip_udp_conn structure for the connection.
hudakz 3:5b17e4656dd0 772 *
hudakz 3:5b17e4656dd0 773 * \hideinitializer
hudakz 3:5b17e4656dd0 774 */
hudakz 4:d774541a34da 775 #define uip_udp_remove(conn) (conn)->lport = 0
hudakz 3:5b17e4656dd0 776
hudakz 3:5b17e4656dd0 777 /**
hudakz 3:5b17e4656dd0 778 * Bind a UDP connection to a local port.
hudakz 3:5b17e4656dd0 779 *
hudakz 3:5b17e4656dd0 780 * \param conn A pointer to the uip_udp_conn structure for the
hudakz 3:5b17e4656dd0 781 * connection.
hudakz 3:5b17e4656dd0 782 *
hudakz 3:5b17e4656dd0 783 * \param port The local port number, in network byte order.
hudakz 3:5b17e4656dd0 784 *
hudakz 3:5b17e4656dd0 785 * \hideinitializer
hudakz 3:5b17e4656dd0 786 */
hudakz 4:d774541a34da 787 #define uip_udp_bind(conn, port) (conn)->lport = port
hudakz 3:5b17e4656dd0 788
hudakz 3:5b17e4656dd0 789 /**
hudakz 3:5b17e4656dd0 790 * Send a UDP datagram of length len on the current connection.
hudakz 3:5b17e4656dd0 791 *
hudakz 3:5b17e4656dd0 792 * This function can only be called in response to a UDP event (poll
hudakz 3:5b17e4656dd0 793 * or newdata). The data must be present in the uip_buf buffer, at the
hudakz 3:5b17e4656dd0 794 * place pointed to by the uip_appdata pointer.
hudakz 3:5b17e4656dd0 795 *
hudakz 3:5b17e4656dd0 796 * \param len The length of the data in the uip_buf buffer.
hudakz 3:5b17e4656dd0 797 *
hudakz 3:5b17e4656dd0 798 * \hideinitializer
hudakz 3:5b17e4656dd0 799 */
hudakz 4:d774541a34da 800 #define uip_udp_send(len) uip_send((char *)uip_appdata, len)
hudakz 3:5b17e4656dd0 801
hudakz 3:5b17e4656dd0 802 /** @} */
hudakz 3:5b17e4656dd0 803
hudakz 3:5b17e4656dd0 804 /* uIP convenience and converting functions. */
hudakz 4:d774541a34da 805
hudakz 3:5b17e4656dd0 806 /**
hudakz 3:5b17e4656dd0 807 * \defgroup uipconvfunc uIP conversion functions
hudakz 3:5b17e4656dd0 808 * @{
hudakz 3:5b17e4656dd0 809 *
hudakz 3:5b17e4656dd0 810 * These functions can be used for converting between different data
hudakz 3:5b17e4656dd0 811 * formats used by uIP.
hudakz 3:5b17e4656dd0 812 */
hudakz 4:d774541a34da 813
hudakz 3:5b17e4656dd0 814 /**
hudakz 3:5b17e4656dd0 815 * Construct an IP address from four bytes.
hudakz 3:5b17e4656dd0 816 *
hudakz 3:5b17e4656dd0 817 * This function constructs an IP address of the type that uIP handles
hudakz 3:5b17e4656dd0 818 * internally from four bytes. The function is handy for specifying IP
hudakz 3:5b17e4656dd0 819 * addresses to use with e.g. the uip_connect() function.
hudakz 3:5b17e4656dd0 820 *
hudakz 3:5b17e4656dd0 821 * Example:
hudakz 3:5b17e4656dd0 822 \code
hudakz 3:5b17e4656dd0 823 uip_ipaddr_t ipaddr;
hudakz 3:5b17e4656dd0 824 struct uip_conn *c;
hudakz 4:d774541a34da 825
hudakz 3:5b17e4656dd0 826 uip_ipaddr(&ipaddr, 192,168,1,2);
hudakz 3:5b17e4656dd0 827 c = uip_connect(&ipaddr, HTONS(80));
hudakz 3:5b17e4656dd0 828 \endcode
hudakz 3:5b17e4656dd0 829 *
hudakz 3:5b17e4656dd0 830 * \param addr A pointer to a uip_ipaddr_t variable that will be
hudakz 3:5b17e4656dd0 831 * filled in with the IP address.
hudakz 3:5b17e4656dd0 832 *
hudakz 3:5b17e4656dd0 833 * \param addr0 The first octet of the IP address.
hudakz 3:5b17e4656dd0 834 * \param addr1 The second octet of the IP address.
hudakz 3:5b17e4656dd0 835 * \param addr2 The third octet of the IP address.
hudakz 3:5b17e4656dd0 836 * \param addr3 The forth octet of the IP address.
hudakz 3:5b17e4656dd0 837 *
hudakz 3:5b17e4656dd0 838 * \hideinitializer
hudakz 3:5b17e4656dd0 839 */
hudakz 4:d774541a34da 840 #define uip_ipaddr(addr, addr0,addr1,addr2,addr3) do { \
hudakz 4:d774541a34da 841 ((u16_t *)(addr))[0] = HTONS(((addr0) << 8) | (addr1)); \
hudakz 4:d774541a34da 842 ((u16_t *)(addr))[1] = HTONS(((addr2) << 8) | (addr3)); \
hudakz 4:d774541a34da 843 } while(0)
hudakz 3:5b17e4656dd0 844
hudakz 3:5b17e4656dd0 845 /**
hudakz 3:5b17e4656dd0 846 * Construct an IPv6 address from eight 16-bit words.
hudakz 3:5b17e4656dd0 847 *
hudakz 3:5b17e4656dd0 848 * This function constructs an IPv6 address.
hudakz 3:5b17e4656dd0 849 *
hudakz 3:5b17e4656dd0 850 * \hideinitializer
hudakz 3:5b17e4656dd0 851 */
hudakz 4:d774541a34da 852 #define uip_ip6addr(addr, addr0,addr1,addr2,addr3,addr4,addr5,addr6,addr7) do { \
hudakz 4:d774541a34da 853 ((u16_t *)(addr))[0] = HTONS((addr0)); \
hudakz 4:d774541a34da 854 ((u16_t *)(addr))[1] = HTONS((addr1)); \
hudakz 4:d774541a34da 855 ((u16_t *)(addr))[2] = HTONS((addr2)); \
hudakz 4:d774541a34da 856 ((u16_t *)(addr))[3] = HTONS((addr3)); \
hudakz 4:d774541a34da 857 ((u16_t *)(addr))[4] = HTONS((addr4)); \
hudakz 4:d774541a34da 858 ((u16_t *)(addr))[5] = HTONS((addr5)); \
hudakz 4:d774541a34da 859 ((u16_t *)(addr))[6] = HTONS((addr6)); \
hudakz 4:d774541a34da 860 ((u16_t *)(addr))[7] = HTONS((addr7)); \
hudakz 4:d774541a34da 861 } while(0)
hudakz 3:5b17e4656dd0 862
hudakz 4:d774541a34da 863 /**
hudakz 3:5b17e4656dd0 864 * Copy an IP address to another IP address.
hudakz 3:5b17e4656dd0 865 *
hudakz 3:5b17e4656dd0 866 * Copies an IP address from one place to another.
hudakz 3:5b17e4656dd0 867 *
hudakz 3:5b17e4656dd0 868 * Example:
hudakz 3:5b17e4656dd0 869 \code
hudakz 3:5b17e4656dd0 870 uip_ipaddr_t ipaddr1, ipaddr2;
hudakz 3:5b17e4656dd0 871
hudakz 3:5b17e4656dd0 872 uip_ipaddr(&ipaddr1, 192,16,1,2);
hudakz 3:5b17e4656dd0 873 uip_ipaddr_copy(&ipaddr2, &ipaddr1);
hudakz 3:5b17e4656dd0 874 \endcode
hudakz 3:5b17e4656dd0 875 *
hudakz 3:5b17e4656dd0 876 * \param dest The destination for the copy.
hudakz 3:5b17e4656dd0 877 * \param src The source from where to copy.
hudakz 3:5b17e4656dd0 878 *
hudakz 3:5b17e4656dd0 879 * \hideinitializer
hudakz 3:5b17e4656dd0 880 */
hudakz 4:d774541a34da 881 #if !UIP_CONF_IPV6
hudakz 4:d774541a34da 882 #define uip_ipaddr_copy(dest, src) do { \
hudakz 4:d774541a34da 883 ((u16_t *)dest)[0] = ((u16_t *)src)[0]; \
hudakz 4:d774541a34da 884 ((u16_t *)dest)[1] = ((u16_t *)src)[1]; \
hudakz 4:d774541a34da 885 } while(0)
hudakz 4:d774541a34da 886 #else /* !UIP_CONF_IPV6 */
hudakz 4:d774541a34da 887 #define uip_ipaddr_copy(dest, src) memcpy(dest, src, sizeof(uip_ip6addr_t))
hudakz 4:d774541a34da 888 #endif /* !UIP_CONF_IPV6 */
hudakz 3:5b17e4656dd0 889
hudakz 4:d774541a34da 890 /**
hudakz 3:5b17e4656dd0 891 * Compare two IP addresses
hudakz 3:5b17e4656dd0 892 *
hudakz 3:5b17e4656dd0 893 * Compares two IP addresses.
hudakz 3:5b17e4656dd0 894 *
hudakz 3:5b17e4656dd0 895 * Example:
hudakz 3:5b17e4656dd0 896 \code
hudakz 3:5b17e4656dd0 897 uip_ipaddr_t ipaddr1, ipaddr2;
hudakz 3:5b17e4656dd0 898
hudakz 3:5b17e4656dd0 899 uip_ipaddr(&ipaddr1, 192,16,1,2);
hudakz 3:5b17e4656dd0 900 if(uip_ipaddr_cmp(&ipaddr2, &ipaddr1)) {
hudakz 3:5b17e4656dd0 901 printf("They are the same");
hudakz 3:5b17e4656dd0 902 }
hudakz 3:5b17e4656dd0 903 \endcode
hudakz 3:5b17e4656dd0 904 *
hudakz 3:5b17e4656dd0 905 * \param addr1 The first IP address.
hudakz 3:5b17e4656dd0 906 * \param addr2 The second IP address.
hudakz 3:5b17e4656dd0 907 *
hudakz 3:5b17e4656dd0 908 * \hideinitializer
hudakz 3:5b17e4656dd0 909 */
hudakz 4:d774541a34da 910 #if !UIP_CONF_IPV6
hudakz 4:d774541a34da 911 #define uip_ipaddr_cmp(addr1, addr2) (((u16_t *)addr1)[0] == ((u16_t *)addr2)[0] && \
hudakz 4:d774541a34da 912 ((u16_t *)addr1)[1] == ((u16_t *)addr2)[1])
hudakz 4:d774541a34da 913 #else /* !UIP_CONF_IPV6 */
hudakz 4:d774541a34da 914 #define uip_ipaddr_cmp(addr1, addr2) (memcmp(addr1, addr2, sizeof(uip_ip6addr_t)) == 0)
hudakz 4:d774541a34da 915 #endif /* !UIP_CONF_IPV6 */
hudakz 3:5b17e4656dd0 916
hudakz 3:5b17e4656dd0 917 /**
hudakz 3:5b17e4656dd0 918 * Compare two IP addresses with netmasks
hudakz 3:5b17e4656dd0 919 *
hudakz 3:5b17e4656dd0 920 * Compares two IP addresses with netmasks. The masks are used to mask
hudakz 3:5b17e4656dd0 921 * out the bits that are to be compared.
hudakz 3:5b17e4656dd0 922 *
hudakz 3:5b17e4656dd0 923 * Example:
hudakz 3:5b17e4656dd0 924 \code
hudakz 3:5b17e4656dd0 925 uip_ipaddr_t ipaddr1, ipaddr2, mask;
hudakz 3:5b17e4656dd0 926
hudakz 3:5b17e4656dd0 927 uip_ipaddr(&mask, 255,255,255,0);
hudakz 3:5b17e4656dd0 928 uip_ipaddr(&ipaddr1, 192,16,1,2);
hudakz 3:5b17e4656dd0 929 uip_ipaddr(&ipaddr2, 192,16,1,3);
hudakz 3:5b17e4656dd0 930 if(uip_ipaddr_maskcmp(&ipaddr1, &ipaddr2, &mask)) {
hudakz 3:5b17e4656dd0 931 printf("They are the same");
hudakz 3:5b17e4656dd0 932 }
hudakz 3:5b17e4656dd0 933 \endcode
hudakz 3:5b17e4656dd0 934 *
hudakz 3:5b17e4656dd0 935 * \param addr1 The first IP address.
hudakz 3:5b17e4656dd0 936 * \param addr2 The second IP address.
hudakz 3:5b17e4656dd0 937 * \param mask The netmask.
hudakz 3:5b17e4656dd0 938 *
hudakz 3:5b17e4656dd0 939 * \hideinitializer
hudakz 3:5b17e4656dd0 940 */
hudakz 4:d774541a34da 941 #define uip_ipaddr_maskcmp(addr1, addr2, mask) \
hudakz 4:d774541a34da 942 (((((u16_t *)addr1)[0] & ((u16_t *)mask)[0]) == \
hudakz 4:d774541a34da 943 (((u16_t *)addr2)[0] & ((u16_t *)mask)[0])) && \
hudakz 4:d774541a34da 944 ((((u16_t *)addr1)[1] & ((u16_t *)mask)[1]) == \
hudakz 4:d774541a34da 945 (((u16_t *)addr2)[1] & ((u16_t *)mask)[1])))
hudakz 3:5b17e4656dd0 946
hudakz 3:5b17e4656dd0 947
hudakz 3:5b17e4656dd0 948 /**
hudakz 3:5b17e4656dd0 949 * Mask out the network part of an IP address.
hudakz 3:5b17e4656dd0 950 *
hudakz 3:5b17e4656dd0 951 * Masks out the network part of an IP address, given the address and
hudakz 3:5b17e4656dd0 952 * the netmask.
hudakz 3:5b17e4656dd0 953 *
hudakz 3:5b17e4656dd0 954 * Example:
hudakz 3:5b17e4656dd0 955 \code
hudakz 3:5b17e4656dd0 956 uip_ipaddr_t ipaddr1, ipaddr2, netmask;
hudakz 3:5b17e4656dd0 957
hudakz 3:5b17e4656dd0 958 uip_ipaddr(&ipaddr1, 192,16,1,2);
hudakz 3:5b17e4656dd0 959 uip_ipaddr(&netmask, 255,255,255,0);
hudakz 3:5b17e4656dd0 960 uip_ipaddr_mask(&ipaddr2, &ipaddr1, &netmask);
hudakz 3:5b17e4656dd0 961 \endcode
hudakz 3:5b17e4656dd0 962 *
hudakz 3:5b17e4656dd0 963 * In the example above, the variable "ipaddr2" will contain the IP
hudakz 3:5b17e4656dd0 964 * address 192.168.1.0.
hudakz 3:5b17e4656dd0 965 *
hudakz 3:5b17e4656dd0 966 * \param dest Where the result is to be placed.
hudakz 3:5b17e4656dd0 967 * \param src The IP address.
hudakz 3:5b17e4656dd0 968 * \param mask The netmask.
hudakz 3:5b17e4656dd0 969 *
hudakz 3:5b17e4656dd0 970 * \hideinitializer
hudakz 3:5b17e4656dd0 971 */
hudakz 4:d774541a34da 972 #define uip_ipaddr_mask(dest, src, mask) do { \
hudakz 4:d774541a34da 973 ((u16_t *)dest)[0] = ((u16_t *)src)[0] & ((u16_t *)mask)[0]; \
hudakz 4:d774541a34da 974 ((u16_t *)dest)[1] = ((u16_t *)src)[1] & ((u16_t *)mask)[1]; \
hudakz 4:d774541a34da 975 } while(0)
hudakz 3:5b17e4656dd0 976
hudakz 3:5b17e4656dd0 977 /**
hudakz 3:5b17e4656dd0 978 * Pick the first octet of an IP address.
hudakz 3:5b17e4656dd0 979 *
hudakz 3:5b17e4656dd0 980 * Picks out the first octet of an IP address.
hudakz 3:5b17e4656dd0 981 *
hudakz 3:5b17e4656dd0 982 * Example:
hudakz 3:5b17e4656dd0 983 \code
hudakz 3:5b17e4656dd0 984 uip_ipaddr_t ipaddr;
hudakz 3:5b17e4656dd0 985 u8_t octet;
hudakz 3:5b17e4656dd0 986
hudakz 3:5b17e4656dd0 987 uip_ipaddr(&ipaddr, 1,2,3,4);
hudakz 3:5b17e4656dd0 988 octet = uip_ipaddr1(&ipaddr);
hudakz 3:5b17e4656dd0 989 \endcode
hudakz 3:5b17e4656dd0 990 *
hudakz 3:5b17e4656dd0 991 * In the example above, the variable "octet" will contain the value 1.
hudakz 3:5b17e4656dd0 992 *
hudakz 3:5b17e4656dd0 993 * \hideinitializer
hudakz 3:5b17e4656dd0 994 */
hudakz 4:d774541a34da 995 #define uip_ipaddr1(addr) (htons(((u16_t *)(addr))[0]) >> 8)
hudakz 3:5b17e4656dd0 996
hudakz 3:5b17e4656dd0 997 /**
hudakz 3:5b17e4656dd0 998 * Pick the second octet of an IP address.
hudakz 3:5b17e4656dd0 999 *
hudakz 3:5b17e4656dd0 1000 * Picks out the second octet of an IP address.
hudakz 3:5b17e4656dd0 1001 *
hudakz 3:5b17e4656dd0 1002 * Example:
hudakz 3:5b17e4656dd0 1003 \code
hudakz 3:5b17e4656dd0 1004 uip_ipaddr_t ipaddr;
hudakz 3:5b17e4656dd0 1005 u8_t octet;
hudakz 3:5b17e4656dd0 1006
hudakz 3:5b17e4656dd0 1007 uip_ipaddr(&ipaddr, 1,2,3,4);
hudakz 3:5b17e4656dd0 1008 octet = uip_ipaddr2(&ipaddr);
hudakz 3:5b17e4656dd0 1009 \endcode
hudakz 3:5b17e4656dd0 1010 *
hudakz 3:5b17e4656dd0 1011 * In the example above, the variable "octet" will contain the value 2.
hudakz 3:5b17e4656dd0 1012 *
hudakz 3:5b17e4656dd0 1013 * \hideinitializer
hudakz 3:5b17e4656dd0 1014 */
hudakz 4:d774541a34da 1015 #define uip_ipaddr2(addr) (htons(((u16_t *)(addr))[0]) & 0xff)
hudakz 3:5b17e4656dd0 1016
hudakz 3:5b17e4656dd0 1017 /**
hudakz 3:5b17e4656dd0 1018 * Pick the third octet of an IP address.
hudakz 3:5b17e4656dd0 1019 *
hudakz 3:5b17e4656dd0 1020 * Picks out the third octet of an IP address.
hudakz 3:5b17e4656dd0 1021 *
hudakz 3:5b17e4656dd0 1022 * Example:
hudakz 3:5b17e4656dd0 1023 \code
hudakz 3:5b17e4656dd0 1024 uip_ipaddr_t ipaddr;
hudakz 3:5b17e4656dd0 1025 u8_t octet;
hudakz 3:5b17e4656dd0 1026
hudakz 3:5b17e4656dd0 1027 uip_ipaddr(&ipaddr, 1,2,3,4);
hudakz 3:5b17e4656dd0 1028 octet = uip_ipaddr3(&ipaddr);
hudakz 3:5b17e4656dd0 1029 \endcode
hudakz 3:5b17e4656dd0 1030 *
hudakz 3:5b17e4656dd0 1031 * In the example above, the variable "octet" will contain the value 3.
hudakz 3:5b17e4656dd0 1032 *
hudakz 3:5b17e4656dd0 1033 * \hideinitializer
hudakz 3:5b17e4656dd0 1034 */
hudakz 4:d774541a34da 1035 #define uip_ipaddr3(addr) (htons(((u16_t *)(addr))[1]) >> 8)
hudakz 3:5b17e4656dd0 1036
hudakz 3:5b17e4656dd0 1037 /**
hudakz 3:5b17e4656dd0 1038 * Pick the fourth octet of an IP address.
hudakz 3:5b17e4656dd0 1039 *
hudakz 3:5b17e4656dd0 1040 * Picks out the fourth octet of an IP address.
hudakz 3:5b17e4656dd0 1041 *
hudakz 3:5b17e4656dd0 1042 * Example:
hudakz 3:5b17e4656dd0 1043 \code
hudakz 3:5b17e4656dd0 1044 uip_ipaddr_t ipaddr;
hudakz 3:5b17e4656dd0 1045 u8_t octet;
hudakz 3:5b17e4656dd0 1046
hudakz 3:5b17e4656dd0 1047 uip_ipaddr(&ipaddr, 1,2,3,4);
hudakz 3:5b17e4656dd0 1048 octet = uip_ipaddr4(&ipaddr);
hudakz 3:5b17e4656dd0 1049 \endcode
hudakz 3:5b17e4656dd0 1050 *
hudakz 3:5b17e4656dd0 1051 * In the example above, the variable "octet" will contain the value 4.
hudakz 3:5b17e4656dd0 1052 *
hudakz 3:5b17e4656dd0 1053 * \hideinitializer
hudakz 3:5b17e4656dd0 1054 */
hudakz 4:d774541a34da 1055 #define uip_ipaddr4(addr) (htons(((u16_t *)(addr))[1]) & 0xff)
hudakz 3:5b17e4656dd0 1056
hudakz 4:d774541a34da 1057 /**
hudakz 3:5b17e4656dd0 1058 * Convert 16-bit quantity from host byte order to network byte order.
hudakz 3:5b17e4656dd0 1059 *
hudakz 3:5b17e4656dd0 1060 * This macro is primarily used for converting constants from host
hudakz 3:5b17e4656dd0 1061 * byte order to network byte order. For converting variables to
hudakz 3:5b17e4656dd0 1062 * network byte order, use the htons() function instead.
hudakz 3:5b17e4656dd0 1063 *
hudakz 3:5b17e4656dd0 1064 * \hideinitializer
hudakz 3:5b17e4656dd0 1065 */
hudakz 4:d774541a34da 1066 #ifndef HTONS
hudakz 4:d774541a34da 1067 # if UIP_BYTE_ORDER == UIP_BIG_ENDIAN
hudakz 4:d774541a34da 1068 # define HTONS(n) (n)
hudakz 4:d774541a34da 1069 # else /* UIP_BYTE_ORDER == UIP_BIG_ENDIAN */
hudakz 4:d774541a34da 1070 # define HTONS(n) (u16_t)((((u16_t) (n)) << 8) | (((u16_t) (n)) >> 8))
hudakz 4:d774541a34da 1071 # endif /* UIP_BYTE_ORDER == UIP_BIG_ENDIAN */
hudakz 4:d774541a34da 1072 #else
hudakz 4:d774541a34da 1073 #error "HTONS already defined!"
hudakz 4:d774541a34da 1074 #endif /* HTONS */
hudakz 3:5b17e4656dd0 1075
hudakz 4:d774541a34da 1076 /**
hudakz 3:5b17e4656dd0 1077 * Convert 16-bit quantity from host byte order to network byte order.
hudakz 3:5b17e4656dd0 1078 *
hudakz 3:5b17e4656dd0 1079 * This function is primarily used for converting variables from host
hudakz 3:5b17e4656dd0 1080 * byte order to network byte order. For converting constants to
hudakz 3:5b17e4656dd0 1081 * network byte order, use the HTONS() macro instead.
hudakz 3:5b17e4656dd0 1082 */
hudakz 4:d774541a34da 1083 #ifndef htons
hudakz 4:d774541a34da 1084 u16_t htons(u16_t val);
hudakz 4:d774541a34da 1085 #endif /* htons */
hudakz 4:d774541a34da 1086 #ifndef ntohs
hudakz 4:d774541a34da 1087 #define ntohs htons
hudakz 4:d774541a34da 1088 #endif
hudakz 3:5b17e4656dd0 1089
hudakz 3:5b17e4656dd0 1090 /** @} */
hudakz 3:5b17e4656dd0 1091
hudakz 3:5b17e4656dd0 1092 /**
hudakz 3:5b17e4656dd0 1093 * Pointer to the application data in the packet buffer.
hudakz 3:5b17e4656dd0 1094 *
hudakz 3:5b17e4656dd0 1095 * This pointer points to the application data when the application is
hudakz 3:5b17e4656dd0 1096 * called. If the application wishes to send data, the application may
hudakz 3:5b17e4656dd0 1097 * use this space to write the data into before calling uip_send().
hudakz 3:5b17e4656dd0 1098 */
hudakz 4:d774541a34da 1099 extern void *uip_appdata;
hudakz 3:5b17e4656dd0 1100
hudakz 4:d774541a34da 1101 #if UIP_URGDATA > 0
hudakz 3:5b17e4656dd0 1102 /* u8_t *uip_urgdata:
hudakz 3:5b17e4656dd0 1103 *
hudakz 3:5b17e4656dd0 1104 * This pointer points to any urgent data that has been received. Only
hudakz 3:5b17e4656dd0 1105 * present if compiled with support for urgent data (UIP_URGDATA).
hudakz 3:5b17e4656dd0 1106 */
hudakz 4:d774541a34da 1107 extern void *uip_urgdata;
hudakz 4:d774541a34da 1108 #endif /* UIP_URGDATA > 0 */
hudakz 4:d774541a34da 1109
hudakz 3:5b17e4656dd0 1110
hudakz 3:5b17e4656dd0 1111 /**
hudakz 3:5b17e4656dd0 1112 * \defgroup uipdrivervars Variables used in uIP device drivers
hudakz 3:5b17e4656dd0 1113 * @{
hudakz 3:5b17e4656dd0 1114 *
hudakz 3:5b17e4656dd0 1115 * uIP has a few global variables that are used in device drivers for
hudakz 3:5b17e4656dd0 1116 * uIP.
hudakz 3:5b17e4656dd0 1117 */
hudakz 3:5b17e4656dd0 1118
hudakz 3:5b17e4656dd0 1119 /**
hudakz 3:5b17e4656dd0 1120 * The length of the packet in the uip_buf buffer.
hudakz 3:5b17e4656dd0 1121 *
hudakz 3:5b17e4656dd0 1122 * The global variable uip_len holds the length of the packet in the
hudakz 3:5b17e4656dd0 1123 * uip_buf buffer.
hudakz 3:5b17e4656dd0 1124 *
hudakz 3:5b17e4656dd0 1125 * When the network device driver calls the uIP input function,
hudakz 3:5b17e4656dd0 1126 * uip_len should be set to the length of the packet in the uip_buf
hudakz 3:5b17e4656dd0 1127 * buffer.
hudakz 3:5b17e4656dd0 1128 *
hudakz 3:5b17e4656dd0 1129 * When sending packets, the device driver should use the contents of
hudakz 3:5b17e4656dd0 1130 * the uip_len variable to determine the length of the outgoing
hudakz 3:5b17e4656dd0 1131 * packet.
hudakz 3:5b17e4656dd0 1132 *
hudakz 3:5b17e4656dd0 1133 */
hudakz 4:d774541a34da 1134 extern u16_t uip_len;
hudakz 3:5b17e4656dd0 1135
hudakz 3:5b17e4656dd0 1136 /** @} */
hudakz 4:d774541a34da 1137
hudakz 4:d774541a34da 1138 #if UIP_URGDATA > 0
hudakz 4:d774541a34da 1139 extern u16_t uip_urglen, uip_surglen;
hudakz 4:d774541a34da 1140 #endif /* UIP_URGDATA > 0 */
hudakz 4:d774541a34da 1141
hudakz 3:5b17e4656dd0 1142
hudakz 3:5b17e4656dd0 1143 /**
hudakz 3:5b17e4656dd0 1144 * Representation of a uIP TCP connection.
hudakz 3:5b17e4656dd0 1145 *
hudakz 3:5b17e4656dd0 1146 * The uip_conn structure is used for identifying a connection. All
hudakz 3:5b17e4656dd0 1147 * but one field in the structure are to be considered read-only by an
hudakz 3:5b17e4656dd0 1148 * application. The only exception is the appstate field whos purpose
hudakz 3:5b17e4656dd0 1149 * is to let the application store application-specific state (e.g.,
hudakz 3:5b17e4656dd0 1150 * file pointers) for the connection. The type of this field is
hudakz 3:5b17e4656dd0 1151 * configured in the "uipopt.h" header file.
hudakz 3:5b17e4656dd0 1152 */
hudakz 4:d774541a34da 1153 struct uip_conn {
hudakz 4:d774541a34da 1154 uip_ipaddr_t ripaddr; /**< The IP address of the remote host. */
hudakz 4:d774541a34da 1155
hudakz 4:d774541a34da 1156 u16_t lport; /**< The local TCP port, in network byte order. */
hudakz 4:d774541a34da 1157 u16_t rport; /**< The local remote TCP port, in network byte
hudakz 4:d774541a34da 1158 order. */
hudakz 4:d774541a34da 1159
hudakz 4:d774541a34da 1160 u8_t rcv_nxt[4]; /**< The sequence number that we expect to
hudakz 4:d774541a34da 1161 receive next. */
hudakz 4:d774541a34da 1162 u8_t snd_nxt[4]; /**< The sequence number that was last sent by
hudakz 3:5b17e4656dd0 1163 us. */
hudakz 4:d774541a34da 1164 u16_t len; /**< Length of the data that was previously sent. */
hudakz 4:d774541a34da 1165 u16_t mss; /**< Current maximum segment size for the
hudakz 4:d774541a34da 1166 connection. */
hudakz 4:d774541a34da 1167 u16_t initialmss; /**< Initial maximum segment size for the
hudakz 4:d774541a34da 1168 connection. */
hudakz 4:d774541a34da 1169 u8_t sa; /**< Retransmission time-out calculation state
hudakz 4:d774541a34da 1170 variable. */
hudakz 4:d774541a34da 1171 u8_t sv; /**< Retransmission time-out calculation state
hudakz 4:d774541a34da 1172 variable. */
hudakz 4:d774541a34da 1173 u8_t rto; /**< Retransmission time-out. */
hudakz 4:d774541a34da 1174 u8_t tcpstateflags; /**< TCP state and flags. */
hudakz 4:d774541a34da 1175 u8_t timer; /**< The retransmission timer. */
hudakz 4:d774541a34da 1176 u8_t nrtx; /**< The number of retransmissions for the last
hudakz 4:d774541a34da 1177 segment sent. */
hudakz 3:5b17e4656dd0 1178
hudakz 4:d774541a34da 1179 /** The application state. */
hudakz 4:d774541a34da 1180 uip_tcp_appstate_t appstate;
hudakz 3:5b17e4656dd0 1181 };
hudakz 3:5b17e4656dd0 1182
hudakz 4:d774541a34da 1183
hudakz 3:5b17e4656dd0 1184 /**
hudakz 3:5b17e4656dd0 1185 * Pointer to the current TCP connection.
hudakz 3:5b17e4656dd0 1186 *
hudakz 3:5b17e4656dd0 1187 * The uip_conn pointer can be used to access the current TCP
hudakz 3:5b17e4656dd0 1188 * connection.
hudakz 3:5b17e4656dd0 1189 */
hudakz 4:d774541a34da 1190 extern struct uip_conn *uip_conn;
hudakz 3:5b17e4656dd0 1191 /* The array containing all uIP connections. */
hudakz 4:d774541a34da 1192 extern struct uip_conn uip_conns[UIP_CONNS];
hudakz 3:5b17e4656dd0 1193 /**
hudakz 3:5b17e4656dd0 1194 * \addtogroup uiparch
hudakz 3:5b17e4656dd0 1195 * @{
hudakz 3:5b17e4656dd0 1196 */
hudakz 4:d774541a34da 1197
hudakz 3:5b17e4656dd0 1198 /**
hudakz 3:5b17e4656dd0 1199 * 4-byte array used for the 32-bit sequence number calculations.
hudakz 3:5b17e4656dd0 1200 */
hudakz 4:d774541a34da 1201 extern u8_t uip_acc32[4];
hudakz 3:5b17e4656dd0 1202
hudakz 3:5b17e4656dd0 1203 /** @} */
hudakz 3:5b17e4656dd0 1204
hudakz 3:5b17e4656dd0 1205
hudakz 4:d774541a34da 1206 #if UIP_UDP
hudakz 3:5b17e4656dd0 1207 /**
hudakz 3:5b17e4656dd0 1208 * Representation of a uIP UDP connection.
hudakz 3:5b17e4656dd0 1209 */
hudakz 4:d774541a34da 1210 struct uip_udp_conn {
hudakz 4:d774541a34da 1211 uip_ipaddr_t ripaddr; /**< The IP address of the remote peer. */
hudakz 4:d774541a34da 1212 u16_t lport; /**< The local port number in network byte order. */
hudakz 4:d774541a34da 1213 u16_t rport; /**< The remote port number in network byte order. */
hudakz 4:d774541a34da 1214 u8_t ttl; /**< Default time-to-live. */
hudakz 3:5b17e4656dd0 1215
hudakz 4:d774541a34da 1216 /** The application state. */
hudakz 4:d774541a34da 1217 uip_udp_appstate_t appstate;
hudakz 3:5b17e4656dd0 1218 };
hudakz 3:5b17e4656dd0 1219
hudakz 3:5b17e4656dd0 1220 /**
hudakz 3:5b17e4656dd0 1221 * The current UDP connection.
hudakz 3:5b17e4656dd0 1222 */
hudakz 4:d774541a34da 1223 extern struct uip_udp_conn *uip_udp_conn;
hudakz 4:d774541a34da 1224 extern struct uip_udp_conn uip_udp_conns[UIP_UDP_CONNS];
hudakz 4:d774541a34da 1225 #endif /* UIP_UDP */
hudakz 3:5b17e4656dd0 1226
hudakz 3:5b17e4656dd0 1227 /**
hudakz 3:5b17e4656dd0 1228 * The structure holding the TCP/IP statistics that are gathered if
hudakz 3:5b17e4656dd0 1229 * UIP_STATISTICS is set to 1.
hudakz 3:5b17e4656dd0 1230 *
hudakz 3:5b17e4656dd0 1231 */
hudakz 4:d774541a34da 1232 struct uip_stats {
hudakz 4:d774541a34da 1233 struct {
hudakz 4:d774541a34da 1234 uip_stats_t drop; /**< Number of dropped packets at the IP
hudakz 4:d774541a34da 1235 layer. */
hudakz 4:d774541a34da 1236 uip_stats_t recv; /**< Number of received packets at the IP
hudakz 4:d774541a34da 1237 layer. */
hudakz 4:d774541a34da 1238 uip_stats_t sent; /**< Number of sent packets at the IP
hudakz 4:d774541a34da 1239 layer. */
hudakz 4:d774541a34da 1240 uip_stats_t vhlerr; /**< Number of packets dropped due to wrong
hudakz 4:d774541a34da 1241 IP version or header length. */
hudakz 4:d774541a34da 1242 uip_stats_t hblenerr; /**< Number of packets dropped due to wrong
hudakz 4:d774541a34da 1243 IP length, high byte. */
hudakz 4:d774541a34da 1244 uip_stats_t lblenerr; /**< Number of packets dropped due to wrong
hudakz 4:d774541a34da 1245 IP length, low byte. */
hudakz 4:d774541a34da 1246 uip_stats_t fragerr; /**< Number of packets dropped since they
hudakz 4:d774541a34da 1247 were IP fragments. */
hudakz 4:d774541a34da 1248 uip_stats_t chkerr; /**< Number of packets dropped due to IP
hudakz 4:d774541a34da 1249 checksum errors. */
hudakz 4:d774541a34da 1250 uip_stats_t protoerr; /**< Number of packets dropped since they
hudakz 4:d774541a34da 1251 were neither ICMP, UDP nor TCP. */
hudakz 4:d774541a34da 1252 } ip; /**< IP statistics. */
hudakz 4:d774541a34da 1253 struct {
hudakz 4:d774541a34da 1254 uip_stats_t drop; /**< Number of dropped ICMP packets. */
hudakz 4:d774541a34da 1255 uip_stats_t recv; /**< Number of received ICMP packets. */
hudakz 4:d774541a34da 1256 uip_stats_t sent; /**< Number of sent ICMP packets. */
hudakz 4:d774541a34da 1257 uip_stats_t typeerr; /**< Number of ICMP packets with a wrong
hudakz 4:d774541a34da 1258 type. */
hudakz 4:d774541a34da 1259 } icmp; /**< ICMP statistics. */
hudakz 4:d774541a34da 1260 struct {
hudakz 4:d774541a34da 1261 uip_stats_t drop; /**< Number of dropped TCP segments. */
hudakz 4:d774541a34da 1262 uip_stats_t recv; /**< Number of recived TCP segments. */
hudakz 4:d774541a34da 1263 uip_stats_t sent; /**< Number of sent TCP segments. */
hudakz 4:d774541a34da 1264 uip_stats_t chkerr; /**< Number of TCP segments with a bad
hudakz 4:d774541a34da 1265 checksum. */
hudakz 4:d774541a34da 1266 uip_stats_t ackerr; /**< Number of TCP segments with a bad ACK
hudakz 4:d774541a34da 1267 number. */
hudakz 4:d774541a34da 1268 uip_stats_t rst; /**< Number of recevied TCP RST (reset) segments. */
hudakz 4:d774541a34da 1269 uip_stats_t rexmit; /**< Number of retransmitted TCP segments. */
hudakz 4:d774541a34da 1270 uip_stats_t syndrop; /**< Number of dropped SYNs due to too few
hudakz 4:d774541a34da 1271 connections was avaliable. */
hudakz 4:d774541a34da 1272 uip_stats_t synrst; /**< Number of SYNs for closed ports,
hudakz 4:d774541a34da 1273 triggering a RST. */
hudakz 4:d774541a34da 1274 } tcp; /**< TCP statistics. */
hudakz 4:d774541a34da 1275 #if UIP_UDP
hudakz 4:d774541a34da 1276 struct {
hudakz 4:d774541a34da 1277 uip_stats_t drop; /**< Number of dropped UDP segments. */
hudakz 4:d774541a34da 1278 uip_stats_t recv; /**< Number of recived UDP segments. */
hudakz 4:d774541a34da 1279 uip_stats_t sent; /**< Number of sent UDP segments. */
hudakz 4:d774541a34da 1280 uip_stats_t chkerr; /**< Number of UDP segments with a bad
hudakz 4:d774541a34da 1281 checksum. */
hudakz 4:d774541a34da 1282 } udp; /**< UDP statistics. */
hudakz 4:d774541a34da 1283 #endif /* UIP_UDP */
hudakz 3:5b17e4656dd0 1284 };
hudakz 3:5b17e4656dd0 1285
hudakz 3:5b17e4656dd0 1286 /**
hudakz 3:5b17e4656dd0 1287 * The uIP TCP/IP statistics.
hudakz 3:5b17e4656dd0 1288 *
hudakz 3:5b17e4656dd0 1289 * This is the variable in which the uIP TCP/IP statistics are gathered.
hudakz 3:5b17e4656dd0 1290 */
hudakz 3:5b17e4656dd0 1291 extern struct uip_stats uip_stat;
hudakz 3:5b17e4656dd0 1292
hudakz 4:d774541a34da 1293
hudakz 3:5b17e4656dd0 1294 /*---------------------------------------------------------------------------*/
hudakz 3:5b17e4656dd0 1295 /* All the stuff below this point is internal to uIP and should not be
hudakz 3:5b17e4656dd0 1296 * used directly by an application or by a device driver.
hudakz 3:5b17e4656dd0 1297 */
hudakz 3:5b17e4656dd0 1298 /*---------------------------------------------------------------------------*/
hudakz 3:5b17e4656dd0 1299 /* u8_t uip_flags:
hudakz 3:5b17e4656dd0 1300 *
hudakz 3:5b17e4656dd0 1301 * When the application is called, uip_flags will contain the flags
hudakz 3:5b17e4656dd0 1302 * that are defined in this file. Please read below for more
hudakz 3:5b17e4656dd0 1303 * infomation.
hudakz 3:5b17e4656dd0 1304 */
hudakz 4:d774541a34da 1305 extern u8_t uip_flags;
hudakz 3:5b17e4656dd0 1306
hudakz 3:5b17e4656dd0 1307 /* The following flags may be set in the global variable uip_flags
hudakz 3:5b17e4656dd0 1308 before calling the application callback. The UIP_ACKDATA,
hudakz 3:5b17e4656dd0 1309 UIP_NEWDATA, and UIP_CLOSE flags may both be set at the same time,
hudakz 3:5b17e4656dd0 1310 whereas the others are mutualy exclusive. Note that these flags
hudakz 3:5b17e4656dd0 1311 should *NOT* be accessed directly, but only through the uIP
hudakz 3:5b17e4656dd0 1312 functions/macros. */
hudakz 3:5b17e4656dd0 1313
hudakz 4:d774541a34da 1314 #define UIP_ACKDATA 1 /* Signifies that the outstanding data was
hudakz 4:d774541a34da 1315 acked and the application should send
hudakz 4:d774541a34da 1316 out new data instead of retransmitting
hudakz 4:d774541a34da 1317 the last data. */
hudakz 4:d774541a34da 1318 #define UIP_NEWDATA 2 /* Flags the fact that the peer has sent
hudakz 4:d774541a34da 1319 us new data. */
hudakz 4:d774541a34da 1320 #define UIP_REXMIT 4 /* Tells the application to retransmit the
hudakz 4:d774541a34da 1321 data that was last sent. */
hudakz 4:d774541a34da 1322 #define UIP_POLL 8 /* Used for polling the application, to
hudakz 4:d774541a34da 1323 check if the application has data that
hudakz 4:d774541a34da 1324 it wants to send. */
hudakz 4:d774541a34da 1325 #define UIP_CLOSE 16 /* The remote host has closed the
hudakz 4:d774541a34da 1326 connection, thus the connection has
hudakz 4:d774541a34da 1327 gone away. Or the application signals
hudakz 4:d774541a34da 1328 that it wants to close the
hudakz 4:d774541a34da 1329 connection. */
hudakz 4:d774541a34da 1330 #define UIP_ABORT 32 /* The remote host has aborted the
hudakz 4:d774541a34da 1331 connection, thus the connection has
hudakz 4:d774541a34da 1332 gone away. Or the application signals
hudakz 4:d774541a34da 1333 that it wants to abort the
hudakz 4:d774541a34da 1334 connection. */
hudakz 4:d774541a34da 1335 #define UIP_CONNECTED 64 /* We have got a connection from a remote
hudakz 3:5b17e4656dd0 1336 host and have set up a new connection
hudakz 3:5b17e4656dd0 1337 for it, or an active connection has
hudakz 3:5b17e4656dd0 1338 been successfully established. */
hudakz 3:5b17e4656dd0 1339
hudakz 4:d774541a34da 1340 #define UIP_TIMEDOUT 128 /* The connection has been aborted due to
hudakz 4:d774541a34da 1341 too many retransmissions. */
hudakz 3:5b17e4656dd0 1342
hudakz 3:5b17e4656dd0 1343 /* uip_process(flag):
hudakz 3:5b17e4656dd0 1344 *
hudakz 3:5b17e4656dd0 1345 * The actual uIP function which does all the work.
hudakz 3:5b17e4656dd0 1346 */
hudakz 4:d774541a34da 1347 void uip_process(u8_t flag);
hudakz 3:5b17e4656dd0 1348
hudakz 3:5b17e4656dd0 1349 /* The following flags are passed as an argument to the uip_process()
hudakz 3:5b17e4656dd0 1350 function. They are used to distinguish between the two cases where
hudakz 3:5b17e4656dd0 1351 uip_process() is called. It can be called either because we have
hudakz 3:5b17e4656dd0 1352 incoming data that should be processed, or because the periodic
hudakz 3:5b17e4656dd0 1353 timer has fired. These values are never used directly, but only in
hudakz 3:5b17e4656dd0 1354 the macrose defined in this file. */
hudakz 4:d774541a34da 1355
hudakz 4:d774541a34da 1356 #define UIP_DATA 1 /* Tells uIP that there is incoming
hudakz 4:d774541a34da 1357 data in the uip_buf buffer. The
hudakz 4:d774541a34da 1358 length of the data is stored in the
hudakz 4:d774541a34da 1359 global variable uip_len. */
hudakz 4:d774541a34da 1360 #define UIP_TIMER 2 /* Tells uIP that the periodic timer
hudakz 4:d774541a34da 1361 has fired. */
hudakz 4:d774541a34da 1362 #define UIP_POLL_REQUEST 3 /* Tells uIP that a connection should
hudakz 4:d774541a34da 1363 be polled. */
hudakz 4:d774541a34da 1364 #define UIP_UDP_SEND_CONN 4 /* Tells uIP that a UDP datagram
hudakz 4:d774541a34da 1365 should be constructed in the
hudakz 4:d774541a34da 1366 uip_buf buffer. */
hudakz 4:d774541a34da 1367 #if UIP_UDP
hudakz 4:d774541a34da 1368 #define UIP_UDP_TIMER 5
hudakz 4:d774541a34da 1369 #endif /* UIP_UDP */
hudakz 3:5b17e4656dd0 1370
hudakz 3:5b17e4656dd0 1371 /* The TCP states used in the uip_conn->tcpstateflags. */
hudakz 4:d774541a34da 1372 #define UIP_CLOSED 0
hudakz 4:d774541a34da 1373 #define UIP_SYN_RCVD 1
hudakz 4:d774541a34da 1374 #define UIP_SYN_SENT 2
hudakz 4:d774541a34da 1375 #define UIP_ESTABLISHED 3
hudakz 4:d774541a34da 1376 #define UIP_FIN_WAIT_1 4
hudakz 4:d774541a34da 1377 #define UIP_FIN_WAIT_2 5
hudakz 4:d774541a34da 1378 #define UIP_CLOSING 6
hudakz 4:d774541a34da 1379 #define UIP_TIME_WAIT 7
hudakz 4:d774541a34da 1380 #define UIP_LAST_ACK 8
hudakz 4:d774541a34da 1381 #define UIP_TS_MASK 15
hudakz 4:d774541a34da 1382
hudakz 4:d774541a34da 1383 #define UIP_STOPPED 16
hudakz 3:5b17e4656dd0 1384
hudakz 3:5b17e4656dd0 1385 /* The TCP and IP headers. */
hudakz 4:d774541a34da 1386 struct uip_tcpip_hdr {
hudakz 4:d774541a34da 1387 #if UIP_CONF_IPV6
hudakz 4:d774541a34da 1388 /* IPv6 header. */
hudakz 4:d774541a34da 1389 u8_t vtc,
hudakz 4:d774541a34da 1390 tcflow;
hudakz 4:d774541a34da 1391 u16_t flow;
hudakz 4:d774541a34da 1392 u8_t len[2];
hudakz 4:d774541a34da 1393 u8_t proto, ttl;
hudakz 4:d774541a34da 1394 uip_ip6addr_t srcipaddr, destipaddr;
hudakz 4:d774541a34da 1395 #else /* UIP_CONF_IPV6 */
hudakz 4:d774541a34da 1396 /* IPv4 header. */
hudakz 4:d774541a34da 1397 u8_t vhl,
hudakz 4:d774541a34da 1398 tos,
hudakz 4:d774541a34da 1399 len[2],
hudakz 4:d774541a34da 1400 ipid[2],
hudakz 4:d774541a34da 1401 ipoffset[2],
hudakz 4:d774541a34da 1402 ttl,
hudakz 4:d774541a34da 1403 proto;
hudakz 4:d774541a34da 1404 u16_t ipchksum;
hudakz 4:d774541a34da 1405 u16_t srcipaddr[2],
hudakz 4:d774541a34da 1406 destipaddr[2];
hudakz 4:d774541a34da 1407 #endif /* UIP_CONF_IPV6 */
hudakz 4:d774541a34da 1408
hudakz 4:d774541a34da 1409 /* TCP header. */
hudakz 4:d774541a34da 1410 u16_t srcport,
hudakz 4:d774541a34da 1411 destport;
hudakz 4:d774541a34da 1412 u8_t seqno[4],
hudakz 4:d774541a34da 1413 ackno[4],
hudakz 4:d774541a34da 1414 tcpoffset,
hudakz 4:d774541a34da 1415 flags,
hudakz 4:d774541a34da 1416 wnd[2];
hudakz 4:d774541a34da 1417 u16_t tcpchksum;
hudakz 4:d774541a34da 1418 u8_t urgp[2];
hudakz 4:d774541a34da 1419 u8_t optdata[4];
hudakz 3:5b17e4656dd0 1420 };
hudakz 3:5b17e4656dd0 1421
hudakz 3:5b17e4656dd0 1422 /* The ICMP and IP headers. */
hudakz 4:d774541a34da 1423 struct uip_icmpip_hdr {
hudakz 4:d774541a34da 1424 #if UIP_CONF_IPV6
hudakz 4:d774541a34da 1425 /* IPv6 header. */
hudakz 4:d774541a34da 1426 u8_t vtc,
hudakz 4:d774541a34da 1427 tcf;
hudakz 4:d774541a34da 1428 u16_t flow;
hudakz 4:d774541a34da 1429 u8_t len[2];
hudakz 4:d774541a34da 1430 u8_t proto, ttl;
hudakz 4:d774541a34da 1431 uip_ip6addr_t srcipaddr, destipaddr;
hudakz 4:d774541a34da 1432 #else /* UIP_CONF_IPV6 */
hudakz 4:d774541a34da 1433 /* IPv4 header. */
hudakz 4:d774541a34da 1434 u8_t vhl,
hudakz 4:d774541a34da 1435 tos,
hudakz 4:d774541a34da 1436 len[2],
hudakz 4:d774541a34da 1437 ipid[2],
hudakz 4:d774541a34da 1438 ipoffset[2],
hudakz 4:d774541a34da 1439 ttl,
hudakz 4:d774541a34da 1440 proto;
hudakz 4:d774541a34da 1441 u16_t ipchksum;
hudakz 4:d774541a34da 1442 u16_t srcipaddr[2],
hudakz 4:d774541a34da 1443 destipaddr[2];
hudakz 4:d774541a34da 1444 #endif /* UIP_CONF_IPV6 */
hudakz 4:d774541a34da 1445
hudakz 4:d774541a34da 1446 /* ICMP (echo) header. */
hudakz 4:d774541a34da 1447 u8_t type, icode;
hudakz 4:d774541a34da 1448 u16_t icmpchksum;
hudakz 4:d774541a34da 1449 #if !UIP_CONF_IPV6
hudakz 4:d774541a34da 1450 u16_t id, seqno;
hudakz 4:d774541a34da 1451 #else /* !UIP_CONF_IPV6 */
hudakz 4:d774541a34da 1452 u8_t flags, reserved1, reserved2, reserved3;
hudakz 4:d774541a34da 1453 u8_t icmp6data[16];
hudakz 4:d774541a34da 1454 u8_t options[1];
hudakz 4:d774541a34da 1455 #endif /* !UIP_CONF_IPV6 */
hudakz 3:5b17e4656dd0 1456 };
hudakz 3:5b17e4656dd0 1457
hudakz 4:d774541a34da 1458
hudakz 3:5b17e4656dd0 1459 /* The UDP and IP headers. */
hudakz 4:d774541a34da 1460 struct uip_udpip_hdr {
hudakz 4:d774541a34da 1461 #if UIP_CONF_IPV6
hudakz 4:d774541a34da 1462 /* IPv6 header. */
hudakz 4:d774541a34da 1463 u8_t vtc,
hudakz 4:d774541a34da 1464 tcf;
hudakz 4:d774541a34da 1465 u16_t flow;
hudakz 4:d774541a34da 1466 u8_t len[2];
hudakz 4:d774541a34da 1467 u8_t proto, ttl;
hudakz 4:d774541a34da 1468 uip_ip6addr_t srcipaddr, destipaddr;
hudakz 4:d774541a34da 1469 #else /* UIP_CONF_IPV6 */
hudakz 4:d774541a34da 1470 /* IP header. */
hudakz 4:d774541a34da 1471 u8_t vhl,
hudakz 4:d774541a34da 1472 tos,
hudakz 4:d774541a34da 1473 len[2],
hudakz 4:d774541a34da 1474 ipid[2],
hudakz 4:d774541a34da 1475 ipoffset[2],
hudakz 4:d774541a34da 1476 ttl,
hudakz 4:d774541a34da 1477 proto;
hudakz 4:d774541a34da 1478 u16_t ipchksum;
hudakz 4:d774541a34da 1479 u16_t srcipaddr[2],
hudakz 4:d774541a34da 1480 destipaddr[2];
hudakz 4:d774541a34da 1481 #endif /* UIP_CONF_IPV6 */
hudakz 4:d774541a34da 1482
hudakz 4:d774541a34da 1483 /* UDP header. */
hudakz 4:d774541a34da 1484 u16_t srcport,
hudakz 4:d774541a34da 1485 destport;
hudakz 4:d774541a34da 1486 u16_t udplen;
hudakz 4:d774541a34da 1487 u16_t udpchksum;
hudakz 4:d774541a34da 1488 };
hudakz 3:5b17e4656dd0 1489
hudakz 3:5b17e4656dd0 1490
hudakz 3:5b17e4656dd0 1491
hudakz 3:5b17e4656dd0 1492 /**
hudakz 3:5b17e4656dd0 1493 * The buffer size available for user data in the \ref uip_buf buffer.
hudakz 3:5b17e4656dd0 1494 *
hudakz 3:5b17e4656dd0 1495 * This macro holds the available size for user data in the \ref
hudakz 3:5b17e4656dd0 1496 * uip_buf buffer. The macro is intended to be used for checking
hudakz 3:5b17e4656dd0 1497 * bounds of available user data.
hudakz 3:5b17e4656dd0 1498 *
hudakz 3:5b17e4656dd0 1499 * Example:
hudakz 3:5b17e4656dd0 1500 \code
hudakz 3:5b17e4656dd0 1501 snprintf(uip_appdata, UIP_APPDATA_SIZE, "%u\n", i);
hudakz 3:5b17e4656dd0 1502 \endcode
hudakz 3:5b17e4656dd0 1503 *
hudakz 3:5b17e4656dd0 1504 * \hideinitializer
hudakz 3:5b17e4656dd0 1505 */
hudakz 4:d774541a34da 1506 #define UIP_APPDATA_SIZE (UIP_BUFSIZE - UIP_LLH_LEN - UIP_TCPIP_HLEN)
hudakz 4:d774541a34da 1507
hudakz 4:d774541a34da 1508
hudakz 4:d774541a34da 1509 #define UIP_PROTO_ICMP 1
hudakz 4:d774541a34da 1510 #define UIP_PROTO_TCP 6
hudakz 4:d774541a34da 1511 #define UIP_PROTO_UDP 17
hudakz 4:d774541a34da 1512 #define UIP_PROTO_ICMP6 58
hudakz 3:5b17e4656dd0 1513
hudakz 3:5b17e4656dd0 1514 /* Header sizes. */
hudakz 4:d774541a34da 1515 #if UIP_CONF_IPV6
hudakz 4:d774541a34da 1516 #define UIP_IPH_LEN 40
hudakz 4:d774541a34da 1517 #else /* UIP_CONF_IPV6 */
hudakz 4:d774541a34da 1518 #define UIP_IPH_LEN 20 /* Size of IP header */
hudakz 4:d774541a34da 1519 #endif /* UIP_CONF_IPV6 */
hudakz 4:d774541a34da 1520 #define UIP_UDPH_LEN 8 /* Size of UDP header */
hudakz 4:d774541a34da 1521 #define UIP_TCPH_LEN 20 /* Size of TCP header */
hudakz 4:d774541a34da 1522 #define UIP_IPUDPH_LEN (UIP_UDPH_LEN + UIP_IPH_LEN) /* Size of IP +
hudakz 4:d774541a34da 1523 UDP
hudakz 4:d774541a34da 1524 header */
hudakz 4:d774541a34da 1525 #define UIP_IPTCPH_LEN (UIP_TCPH_LEN + UIP_IPH_LEN) /* Size of IP +
hudakz 4:d774541a34da 1526 TCP
hudakz 4:d774541a34da 1527 header */
hudakz 4:d774541a34da 1528 #define UIP_TCPIP_HLEN UIP_IPTCPH_LEN
hudakz 3:5b17e4656dd0 1529
hudakz 3:5b17e4656dd0 1530
hudakz 4:d774541a34da 1531 #if UIP_FIXEDADDR
hudakz 4:d774541a34da 1532 extern const uip_ipaddr_t uip_hostaddr, uip_netmask, uip_draddr;
hudakz 4:d774541a34da 1533 #else /* UIP_FIXEDADDR */
hudakz 4:d774541a34da 1534 extern uip_ipaddr_t uip_hostaddr, uip_netmask, uip_draddr;
hudakz 4:d774541a34da 1535 #endif /* UIP_FIXEDADDR */
hudakz 3:5b17e4656dd0 1536
hudakz 3:5b17e4656dd0 1537
hudakz 3:5b17e4656dd0 1538
hudakz 3:5b17e4656dd0 1539 /**
hudakz 3:5b17e4656dd0 1540 * Representation of a 48-bit Ethernet address.
hudakz 3:5b17e4656dd0 1541 */
hudakz 4:d774541a34da 1542 struct uip_eth_addr {
hudakz 4:d774541a34da 1543 u8_t addr[6];
hudakz 3:5b17e4656dd0 1544 };
hudakz 3:5b17e4656dd0 1545
hudakz 3:5b17e4656dd0 1546 /**
hudakz 3:5b17e4656dd0 1547 * Calculate the Internet checksum over a buffer.
hudakz 3:5b17e4656dd0 1548 *
hudakz 3:5b17e4656dd0 1549 * The Internet checksum is the one's complement of the one's
hudakz 3:5b17e4656dd0 1550 * complement sum of all 16-bit words in the buffer.
hudakz 3:5b17e4656dd0 1551 *
hudakz 3:5b17e4656dd0 1552 * See RFC1071.
hudakz 3:5b17e4656dd0 1553 *
hudakz 3:5b17e4656dd0 1554 * \param buf A pointer to the buffer over which the checksum is to be
hudakz 3:5b17e4656dd0 1555 * computed.
hudakz 3:5b17e4656dd0 1556 *
hudakz 3:5b17e4656dd0 1557 * \param len The length of the buffer over which the checksum is to
hudakz 3:5b17e4656dd0 1558 * be computed.
hudakz 3:5b17e4656dd0 1559 *
hudakz 3:5b17e4656dd0 1560 * \return The Internet checksum of the buffer.
hudakz 3:5b17e4656dd0 1561 */
hudakz 4:d774541a34da 1562 u16_t uip_chksum(u16_t *buf, u16_t len);
hudakz 3:5b17e4656dd0 1563
hudakz 3:5b17e4656dd0 1564 /**
hudakz 3:5b17e4656dd0 1565 * Calculate the IP header checksum of the packet header in uip_buf.
hudakz 3:5b17e4656dd0 1566 *
hudakz 3:5b17e4656dd0 1567 * The IP header checksum is the Internet checksum of the 20 bytes of
hudakz 3:5b17e4656dd0 1568 * the IP header.
hudakz 3:5b17e4656dd0 1569 *
hudakz 3:5b17e4656dd0 1570 * \return The IP header checksum of the IP header in the uip_buf
hudakz 3:5b17e4656dd0 1571 * buffer.
hudakz 3:5b17e4656dd0 1572 */
hudakz 4:d774541a34da 1573 u16_t uip_ipchksum(void);
hudakz 3:5b17e4656dd0 1574
hudakz 3:5b17e4656dd0 1575 /**
hudakz 3:5b17e4656dd0 1576 * Calculate the TCP checksum of the packet in uip_buf and uip_appdata.
hudakz 3:5b17e4656dd0 1577 *
hudakz 3:5b17e4656dd0 1578 * The TCP checksum is the Internet checksum of data contents of the
hudakz 3:5b17e4656dd0 1579 * TCP segment, and a pseudo-header as defined in RFC793.
hudakz 3:5b17e4656dd0 1580 *
hudakz 3:5b17e4656dd0 1581 * \return The TCP checksum of the TCP segment in uip_buf and pointed
hudakz 3:5b17e4656dd0 1582 * to by uip_appdata.
hudakz 3:5b17e4656dd0 1583 */
hudakz 4:d774541a34da 1584 u16_t uip_tcpchksum(void);
hudakz 3:5b17e4656dd0 1585
hudakz 3:5b17e4656dd0 1586 /**
hudakz 3:5b17e4656dd0 1587 * Calculate the UDP checksum of the packet in uip_buf and uip_appdata.
hudakz 3:5b17e4656dd0 1588 *
hudakz 3:5b17e4656dd0 1589 * The UDP checksum is the Internet checksum of data contents of the
hudakz 3:5b17e4656dd0 1590 * UDP segment, and a pseudo-header as defined in RFC768.
hudakz 3:5b17e4656dd0 1591 *
hudakz 3:5b17e4656dd0 1592 * \return The UDP checksum of the UDP segment in uip_buf and pointed
hudakz 3:5b17e4656dd0 1593 * to by uip_appdata.
hudakz 3:5b17e4656dd0 1594 */
hudakz 4:d774541a34da 1595 u16_t uip_udpchksum(void);
hudakz 4:d774541a34da 1596
hudakz 4:d774541a34da 1597
hudakz 3:5b17e4656dd0 1598 #endif /* __UIP_H__ */
hudakz 3:5b17e4656dd0 1599
hudakz 4:d774541a34da 1600
hudakz 3:5b17e4656dd0 1601 /** @} */