8 * uIP packet forwarding header file.
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9 * \author Adam Dunkels <adam@sics.se>
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13 * Copyright (c) 2004, Swedish Institute of Computer Science.
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14 * All rights reserved.
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16 * Redistribution and use in source and binary forms, with or without
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17 * modification, are permitted provided that the following conditions
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19 * 1. Redistributions of source code must retain the above copyright
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20 * notice, this list of conditions and the following disclaimer.
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21 * 2. Redistributions in binary form must reproduce the above copyright
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22 * notice, this list of conditions and the following disclaimer in the
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23 * documentation and/or other materials provided with the distribution.
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24 * 3. Neither the name of the Institute nor the names of its contributors
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25 * may be used to endorse or promote products derived from this software
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26 * without specific prior written permission.
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28 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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31 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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40 * This file is part of the uIP TCP/IP stack
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42 * Author: Adam Dunkels <adam@sics.se>
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44 * $Id: uip-fw.h,v 1.2 2006/06/12 08:00:30 adam Exp $
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46 #ifndef __UIP_FW_H__
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47 #define __UIP_FW_H__
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52 * Representation of a uIP network interface.
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54 struct uip_fw_netif {
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55 struct uip_fw_netif *next; /**< Pointer to the next interface when
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56 linked in a list. */
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57 u16_t ipaddr[2]; /**< The IP address of this interface. */
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58 u16_t netmask[2]; /**< The netmask of the interface. */
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59 u8_t (* output)(void);
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60 /**< A pointer to the function that
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65 * Intantiating macro for a uIP network interface.
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69 struct uip_fw_netif slipnetif =
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70 {UIP_FW_NETIF(192,168,76,1, 255,255,255,0, slip_output)};
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72 * \param ip1,ip2,ip3,ip4 The IP address of the network interface.
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74 * \param nm1,nm2,nm3,nm4 The netmask of the network interface.
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76 * \param outputfunc A pointer to the output function of the network interface.
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80 #define UIP_FW_NETIF(ip1,ip2,ip3,ip4, nm1,nm2,nm3,nm4, outputfunc) \
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82 {HTONS((ip1 << 8) | ip2), HTONS((ip3 << 8) | ip4)}, \
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83 {HTONS((nm1 << 8) | nm2), HTONS((nm3 << 8) | nm4)}, \
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87 * Set the IP address of a network interface.
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89 * \param netif A pointer to the uip_fw_netif structure for the network interface.
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91 * \param addr A pointer to an IP address.
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95 #define uip_fw_setipaddr(netif, addr) \
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96 do { (netif)->ipaddr[0] = ((u16_t *)(addr))[0]; \
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97 (netif)->ipaddr[1] = ((u16_t *)(addr))[1]; } while(0)
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99 * Set the netmask of a network interface.
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101 * \param netif A pointer to the uip_fw_netif structure for the network interface.
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103 * \param addr A pointer to an IP address representing the netmask.
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107 #define uip_fw_setnetmask(netif, addr) \
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108 do { (netif)->netmask[0] = ((u16_t *)(addr))[0]; \
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109 (netif)->netmask[1] = ((u16_t *)(addr))[1]; } while(0)
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111 void uip_fw_init(void);
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112 u8_t uip_fw_forward(void);
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113 u8_t uip_fw_output(void);
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114 void uip_fw_register(struct uip_fw_netif *netif);
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115 void uip_fw_default(struct uip_fw_netif *netif);
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116 void uip_fw_periodic(void);
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120 * A non-error message that indicates that a packet should be
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121 * processed locally.
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125 #define UIP_FW_LOCAL 0
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128 * A non-error message that indicates that something went OK.
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132 #define UIP_FW_OK 0
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135 * A non-error message that indicates that a packet was forwarded.
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139 #define UIP_FW_FORWARDED 1
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142 * A non-error message that indicates that a zero-length packet
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143 * transmission was attempted, and that no packet was sent.
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147 #define UIP_FW_ZEROLEN 2
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150 * An error message that indicates that a packet that was too large
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151 * for the outbound network interface was detected.
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155 #define UIP_FW_TOOLARGE 3
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158 * An error message that indicates that no suitable interface could be
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159 * found for an outbound packet.
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163 #define UIP_FW_NOROUTE 4
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166 * An error message that indicates that a packet that should be
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167 * forwarded or output was dropped.
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171 #define UIP_FW_DROPPED 5
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174 #endif /* __UIP_FW_H__ */
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