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mld6.h
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1 /**
2  * @file
3  *
4  * Multicast listener discovery for IPv6. Aims to be compliant with RFC 2710.
5  * No support for MLDv2.
6  */
7 
8 /*
9  * Copyright (c) 2010 Inico Technologies Ltd.
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  * This file is part of the lwIP TCP/IP stack.
35  *
36  * Author: Ivan Delamer <delamer@inicotech.com>
37  *
38  *
39  * Please coordinate changes and requests with Ivan Delamer
40  * <delamer@inicotech.com>
41  */
42 
43 #ifndef LWIP_HDR_MLD6_H
44 #define LWIP_HDR_MLD6_H
45 
46 #include "lwip/opt.h"
47 
48 #if LWIP_IPV6_MLD && LWIP_IPV6 /* don't build if not configured for use in lwipopts.h */
49 
50 #include "lwip/pbuf.h"
51 #include "lwip/netif.h"
52 
53 #ifdef __cplusplus
54 extern "C" {
55 #endif
56 
57 /** MLD group */
58 struct mld_group {
59  /** next link */
60  struct mld_group *next;
61  /** multicast address */
62  ip6_addr_t group_address;
63  /** signifies we were the last person to report */
64  u8_t last_reporter_flag;
65  /** current state of the group */
66  u8_t group_state;
67  /** timer for reporting */
68  u16_t timer;
69  /** counter of simultaneous uses */
70  u8_t use;
71 };
72 
73 #define MLD6_TMR_INTERVAL 100 /* Milliseconds */
74 
75 err_t mld6_stop(struct netif *netif);
76 void mld6_report_groups(struct netif *netif);
77 void mld6_tmr(void);
78 struct mld_group *mld6_lookfor_group(struct netif *ifp, const ip6_addr_t *addr);
79 void mld6_input(struct pbuf *p, struct netif *inp);
80 err_t mld6_joingroup(const ip6_addr_t *srcaddr, const ip6_addr_t *groupaddr);
81 err_t mld6_joingroup_netif(struct netif *netif, const ip6_addr_t *groupaddr);
82 err_t mld6_leavegroup(const ip6_addr_t *srcaddr, const ip6_addr_t *groupaddr);
83 err_t mld6_leavegroup_netif(struct netif *netif, const ip6_addr_t *groupaddr);
84 
85 /** @ingroup mld6
86  * Get list head of MLD6 groups for netif.
87  * Note: The allnodes group IP is NOT in the list, since it must always
88  * be received for correct IPv6 operation.
89  * @see @ref netif_set_mld_mac_filter()
90  */
91 #define netif_mld6_data(netif) ((struct mld_group *)netif_get_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_MLD6))
92 
93 #ifdef __cplusplus
94 }
95 #endif
96 
97 #endif /* LWIP_IPV6_MLD && LWIP_IPV6 */
98 
99 #endif /* LWIP_HDR_MLD6_H */
opt.h
lwIP Options Configuration
netif.h
netif API (to be used from TCPIP thread)
pbuf
Main packet buffer struct.
Definition: ppp_service_if.h:136
netif
Generic data structure used for all lwIP network interfaces.
Definition: ppp_service_if.h:157
pbuf.h
pbuf API
nsapi_addr
IP address structure for passing IP addresses by value.
Definition: nsapi_types.h:237
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