| /** |
| * @file |
| * |
| * Multicast listener discovery for IPv6. Aims to be compliant with RFC 2710. |
| * No support for MLDv2. |
| */ |
| |
| /* |
| * Copyright (c) 2010 Inico Technologies Ltd. |
| * 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. |
| * |
| * This file is part of the lwIP TCP/IP stack. |
| * |
| * Author: Ivan Delamer <delamer@inicotech.com> |
| * |
| * |
| * Please coordinate changes and requests with Ivan Delamer |
| * <delamer@inicotech.com> |
| */ |
| |
| #ifndef __LWIP_MLD6_H__ |
| #define __LWIP_MLD6_H__ |
| |
| #include "lwip/opt.h" |
| |
| #if LWIP_IPV6_MLD && LWIP_IPV6 /* don't build if not configured for use in lwipopts.h */ |
| |
| #include "lwip/pbuf.h" |
| #include "lwip/netif.h" |
| |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| struct mld_group { |
| /** next link */ |
| struct mld_group *next; |
| /** interface on which the group is active */ |
| struct netif *netif; |
| /** multicast address */ |
| ip6_addr_t group_address; |
| /** signifies we were the last person to report */ |
| u8_t last_reporter_flag; |
| /** current state of the group */ |
| u8_t group_state; |
| /** timer for reporting */ |
| u16_t timer; |
| /** counter of simultaneous uses */ |
| u8_t use; |
| }; |
| |
| /** Multicast listener report/query/done message header. */ |
| #ifdef PACK_STRUCT_USE_INCLUDES |
| # include "arch/bpstruct.h" |
| #endif |
| PACK_STRUCT_BEGIN |
| struct mld_header { |
| PACK_STRUCT_FIELD(u8_t type); |
| PACK_STRUCT_FIELD(u8_t code); |
| PACK_STRUCT_FIELD(u16_t chksum); |
| PACK_STRUCT_FIELD(u16_t max_resp_delay); |
| PACK_STRUCT_FIELD(u16_t reserved); |
| PACK_STRUCT_FIELD(ip6_addr_p_t multicast_address); |
| /* Options follow. */ |
| } PACK_STRUCT_STRUCT; |
| PACK_STRUCT_END |
| #ifdef PACK_STRUCT_USE_INCLUDES |
| # include "arch/epstruct.h" |
| #endif |
| |
| #define MLD6_TMR_INTERVAL 100 /* Milliseconds */ |
| |
| /* MAC Filter Actions, these are passed to a netif's |
| * mld_mac_filter callback function. */ |
| #define MLD6_DEL_MAC_FILTER 0 |
| #define MLD6_ADD_MAC_FILTER 1 |
| |
| |
| #define mld6_init() /* TODO should we init tables? */ |
| err_t mld6_stop(struct netif *netif); |
| void mld6_report_groups(struct netif *netif); |
| err_t mld6_tmr(void); |
| struct mld_group *mld6_lookfor_group(struct netif *ifp, ip6_addr_t *addr); |
| void mld6_input(struct pbuf *p, struct netif *inp); |
| err_t mld6_joingroup(ip6_addr_t *srcaddr, ip6_addr_t *groupaddr); |
| err_t mld6_leavegroup(ip6_addr_t *srcaddr, ip6_addr_t *groupaddr); |
| |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* LWIP_IPV6_MLD && LWIP_IPV6 */ |
| |
| #endif /* __LWIP_MLD6_H__ */ |