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Diffstat (limited to 'lwip/src/include/lwip/autoip.h')
| -rw-r--r-- | lwip/src/include/lwip/autoip.h | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/lwip/src/include/lwip/autoip.h b/lwip/src/include/lwip/autoip.h new file mode 100644 index 0000000..1d85bcc --- /dev/null +++ b/lwip/src/include/lwip/autoip.h @@ -0,0 +1,99 @@ +/** + * @file + * + * AutoIP Automatic LinkLocal IP Configuration + */ + +/* + * + * Copyright (c) 2007 Dominik Spies <kontakt@dspies.de> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * Author: Dominik Spies <kontakt@dspies.de> + * + * This is a AutoIP implementation for the lwIP TCP/IP stack. It aims to conform + * with RFC 3927. + * + */ + +#ifndef LWIP_HDR_AUTOIP_H +#define LWIP_HDR_AUTOIP_H + +#include "lwip/opt.h" + +#if LWIP_IPV4 && LWIP_AUTOIP /* don't build if not configured for use in lwipopts.h */ + +#include "lwip/netif.h" +/* #include "lwip/udp.h" */ +#include "lwip/etharp.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** AutoIP Timing */ +#define AUTOIP_TMR_INTERVAL 100 +#define AUTOIP_TICKS_PER_SECOND (1000 / AUTOIP_TMR_INTERVAL) + +/** AutoIP state information per netif */ +struct autoip +{ + /** the currently selected, probed, announced or used LL IP-Address */ + ip4_addr_t llipaddr; + /** current AutoIP state machine state */ + u8_t state; + /** sent number of probes or announces, dependent on state */ + u8_t sent_num; + /** ticks to wait, tick is AUTOIP_TMR_INTERVAL long */ + u16_t ttw; + /** ticks until a conflict can be solved by defending */ + u8_t lastconflict; + /** total number of probed/used Link Local IP-Addresses */ + u8_t tried_llipaddr; +}; + + +void autoip_set_struct(struct netif *netif, struct autoip *autoip); +/** Remove a struct autoip previously set to the netif using autoip_set_struct() */ +#define autoip_remove_struct(netif) do { (netif)->autoip = NULL; } while (0) +err_t autoip_start(struct netif *netif); +err_t autoip_stop(struct netif *netif); +void autoip_arp_reply(struct netif *netif, struct etharp_hdr *hdr); +void autoip_tmr(void); +void autoip_network_changed(struct netif *netif); +u8_t autoip_supplied_address(const struct netif *netif); + +/* for lwIP internal use by ip4.c */ +u8_t autoip_accept_packet(struct netif *netif, const ip4_addr_t *addr); + +#define netif_autoip_data(netif) ((struct autoip*)netif_get_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_AUTOIP)) + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_IPV4 && LWIP_AUTOIP */ + +#endif /* LWIP_HDR_AUTOIP_H */ |