source: UsbWattMeter/trunk/lwip-1.4.1/src/include/ipv4/lwip/igmp.h@ 164

Last change on this file since 164 was 164, checked in by coas-nagasima, 6 years ago

TOPPERS/ECNLサンプルアプリ「USB充電器電力計」を追加

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1/*
2 * Copyright (c) 2002 CITEL Technologies Ltd.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of CITEL Technologies Ltd nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY CITEL TECHNOLOGIES AND CONTRIBUTORS ``AS IS''
18 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL CITEL TECHNOLOGIES OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * This file is a contribution to the lwIP TCP/IP stack.
30 * The Swedish Institute of Computer Science and Adam Dunkels
31 * are specifically granted permission to redistribute this
32 * source code.
33*/
34
35#ifndef __LWIP_IGMP_H__
36#define __LWIP_IGMP_H__
37
38#include "lwip/opt.h"
39#include "lwip/ip_addr.h"
40#include "lwip/netif.h"
41#include "lwip/pbuf.h"
42
43#if LWIP_IGMP /* don't build if not configured for use in lwipopts.h */
44
45#ifdef __cplusplus
46extern "C" {
47#endif
48
49
50/* IGMP timer */
51#define IGMP_TMR_INTERVAL 100 /* Milliseconds */
52#define IGMP_V1_DELAYING_MEMBER_TMR (1000/IGMP_TMR_INTERVAL)
53#define IGMP_JOIN_DELAYING_MEMBER_TMR (500 /IGMP_TMR_INTERVAL)
54
55/* MAC Filter Actions, these are passed to a netif's
56 * igmp_mac_filter callback function. */
57#define IGMP_DEL_MAC_FILTER 0
58#define IGMP_ADD_MAC_FILTER 1
59
60
61/**
62 * igmp group structure - there is
63 * a list of groups for each interface
64 * these should really be linked from the interface, but
65 * if we keep them separate we will not affect the lwip original code
66 * too much
67 *
68 * There will be a group for the all systems group address but this
69 * will not run the state machine as it is used to kick off reports
70 * from all the other groups
71 */
72struct igmp_group {
73 /** next link */
74 struct igmp_group *next;
75 /** interface on which the group is active */
76 struct netif *netif;
77 /** multicast address */
78 ip_addr_t group_address;
79 /** signifies we were the last person to report */
80 u8_t last_reporter_flag;
81 /** current state of the group */
82 u8_t group_state;
83 /** timer for reporting, negative is OFF */
84 u16_t timer;
85 /** counter of simultaneous uses */
86 u8_t use;
87};
88
89/* Prototypes */
90void igmp_init(void);
91err_t igmp_start(struct netif *netif);
92err_t igmp_stop(struct netif *netif);
93void igmp_report_groups(struct netif *netif);
94struct igmp_group *igmp_lookfor_group(struct netif *ifp, ip_addr_t *addr);
95void igmp_input(struct pbuf *p, struct netif *inp, ip_addr_t *dest);
96err_t igmp_joingroup(ip_addr_t *ifaddr, ip_addr_t *groupaddr);
97err_t igmp_leavegroup(ip_addr_t *ifaddr, ip_addr_t *groupaddr);
98void igmp_tmr(void);
99
100#ifdef __cplusplus
101}
102#endif
103
104#endif /* LWIP_IGMP */
105
106#endif /* __LWIP_IGMP_H__ */
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