1 /** 2 * @file 3 * 4 * AutoIP Automatic LinkLocal IP Configuration 5 */ 6 7 /* 8 * 9 * Copyright (c) 2007 Dominik Spies <[email protected]> 10 * All rights reserved. 11 * 12 * Redistribution and use in source and binary forms, with or without modification, 13 * are permitted provided that the following conditions are met: 14 * 15 * 1. Redistributions of source code must retain the above copyright notice, 16 * this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright notice, 18 * this list of conditions and the following disclaimer in the documentation 19 * and/or other materials provided with the distribution. 20 * 3. The name of the author may not be used to endorse or promote products 21 * derived from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 24 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 25 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 26 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 27 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 28 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 31 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 32 * OF SUCH DAMAGE. 33 * 34 * Author: Dominik Spies <[email protected]> 35 * 36 * This is a AutoIP implementation for the lwIP TCP/IP stack. It aims to conform 37 * with RFC 3927. 38 * 39 */ 40 41 #ifndef LWIP_HDR_AUTOIP_H 42 #define LWIP_HDR_AUTOIP_H 43 44 #include "lwip/opt.h" 45 46 #if LWIP_IPV4 && LWIP_AUTOIP /* don't build if not configured for use in lwipopts.h */ 47 48 #include "lwip/netif.h" 49 /* #include "lwip/udp.h" */ 50 #include "lwip/etharp.h" 51 #include "lwip/acd.h" 52 53 #ifdef __cplusplus 54 extern "C" { 55 #endif 56 57 /** AutoIP state information per netif */ 58 struct autoip 59 { 60 /** the currently selected, probed, announced or used LL IP-Address */ 61 ip4_addr_t llipaddr; 62 /** current AutoIP state machine state */ 63 u8_t state; 64 /** total number of probed/used Link Local IP-Addresses */ 65 u8_t tried_llipaddr; 66 /** acd struct */ 67 struct acd acd; 68 }; 69 70 71 void autoip_set_struct(struct netif *netif, struct autoip *autoip); 72 /** Remove a struct autoip previously set to the netif using autoip_set_struct() */ 73 #define autoip_remove_struct(netif) do { (netif)->autoip = NULL; } while (0) 74 err_t autoip_start(struct netif *netif); 75 err_t autoip_stop(struct netif *netif); 76 void autoip_network_changed_link_up(struct netif *netif); 77 void autoip_network_changed_link_down(struct netif *netif); 78 u8_t autoip_supplied_address(struct netif *netif); 79 80 /* for lwIP internal use by ip4.c */ 81 u8_t autoip_accept_packet(struct netif *netif, const ip4_addr_t *addr); 82 83 #define netif_autoip_data(netif) ((struct autoip*)netif_get_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_AUTOIP)) 84 85 #ifdef __cplusplus 86 } 87 #endif 88 89 #endif /* LWIP_IPV4 && LWIP_AUTOIP */ 90 91 #endif /* LWIP_HDR_AUTOIP_H */ 92