120 lines
3.9 KiB
C
Executable File
120 lines
3.9 KiB
C
Executable File
/**
|
|
* @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_HDR_MLD6_H
|
|
#define LWIP_HDR_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_FLD_8(u8_t type);
|
|
PACK_STRUCT_FLD_8(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_FLD_S(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
|
|
|
|
|
|
err_t mld6_stop(struct netif *netif);
|
|
void mld6_report_groups(struct netif *netif);
|
|
void mld6_tmr(void);
|
|
struct mld_group *mld6_lookfor_group(struct netif *ifp, const ip6_addr_t *addr);
|
|
void mld6_input(struct pbuf *p, struct netif *inp);
|
|
err_t mld6_joingroup(const ip6_addr_t *srcaddr, const ip6_addr_t *groupaddr);
|
|
err_t mld6_joingroup_netif(struct netif *netif, const ip6_addr_t *groupaddr);
|
|
err_t mld6_leavegroup(const ip6_addr_t *srcaddr, const ip6_addr_t *groupaddr);
|
|
err_t mld6_leavegroup_netif(struct netif *netif, const ip6_addr_t *groupaddr);
|
|
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* LWIP_IPV6_MLD && LWIP_IPV6 */
|
|
|
|
#endif /* LWIP_HDR_MLD6_H */
|