8 * uIP packet forwarding header file.
9 * \author Adam Dunkels <adam@sics.se>
13 * Copyright (c) 2004, Swedish Institute of Computer Science.
14 * All rights reserved.
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17 * modification, are permitted provided that the following conditions
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40 * This file is part of the uIP TCP/IP stack
42 * Author: Adam Dunkels <adam@sics.se>
44 * $Id: uip-fw.h,v 1.2 2008/08/06 23:40:07 andrewlxia Exp $
52 * Representation of a uIP network interface.
55 struct uip_fw_netif *next; /**< Pointer to the next interface when
57 u16_t ipaddr[2]; /**< The IP address of this interface. */
58 u16_t netmask[2]; /**< The netmask of the interface. */
59 u8_t (* output)(void);
60 /**< A pointer to the function that
65 * Intantiating macro for a uIP network interface.
69 struct uip_fw_netif slipnetif =
70 {UIP_FW_NETIF(192,168,76,1, 255,255,255,0, slip_output)};
72 * \param ip1,ip2,ip3,ip4 The IP address of the network interface.
74 * \param nm1,nm2,nm3,nm4 The netmask of the network interface.
76 * \param outputfunc A pointer to the output function of the network interface.
80 #define UIP_FW_NETIF(ip1,ip2,ip3,ip4, nm1,nm2,nm3,nm4, outputfunc) \
82 {HTONS((ip1 << 8) | ip2), HTONS((ip3 << 8) | ip4)}, \
83 {HTONS((nm1 << 8) | nm2), HTONS((nm3 << 8) | nm4)}, \
87 * Set the IP address of a network interface.
89 * \param netif A pointer to the uip_fw_netif structure for the network interface.
91 * \param addr A pointer to an IP address.
95 #define uip_fw_setipaddr(netif, addr) \
96 do { (netif)->ipaddr[0] = ((u16_t *)(addr))[0]; \
97 (netif)->ipaddr[1] = ((u16_t *)(addr))[1]; } while(0)
99 * Set the netmask of a network interface.
101 * \param netif A pointer to the uip_fw_netif structure for the network interface.
103 * \param addr A pointer to an IP address representing the netmask.
107 #define uip_fw_setnetmask(netif, addr) \
108 do { (netif)->netmask[0] = ((u16_t *)(addr))[0]; \
109 (netif)->netmask[1] = ((u16_t *)(addr))[1]; } while(0)
111 void uip_fw_init(void);
112 u8_t uip_fw_forward(void);
113 u8_t uip_fw_output(void);
114 void uip_fw_register(struct uip_fw_netif *netif);
115 void uip_fw_default(struct uip_fw_netif *netif);
116 void uip_fw_periodic(void);
120 * A non-error message that indicates that a packet should be
125 #define UIP_FW_LOCAL 0
128 * A non-error message that indicates that something went OK.
135 * A non-error message that indicates that a packet was forwarded.
139 #define UIP_FW_FORWARDED 1
142 * A non-error message that indicates that a zero-length packet
143 * transmission was attempted, and that no packet was sent.
147 #define UIP_FW_ZEROLEN 2
150 * An error message that indicates that a packet that was too large
151 * for the outbound network interface was detected.
155 #define UIP_FW_TOOLARGE 3
158 * An error message that indicates that no suitable interface could be
159 * found for an outbound packet.
163 #define UIP_FW_NOROUTE 4
166 * An error message that indicates that a packet that should be
167 * forwarded or output was dropped.
171 #define UIP_FW_DROPPED 5
174 #endif /* __UIP_FW_H__ */