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1 | /** @file\r |
2 | Multicast Listener Discovery support routines.\r | |
3 | \r | |
4 | Copyright (c) 2009 - 2010, Intel Corporation. All rights reserved.<BR>\r | |
5 | \r | |
6 | This program and the accompanying materials\r | |
7 | are licensed and made available under the terms and conditions of the BSD License\r | |
8 | which accompanies this distribution. The full text of the license may be found at\r | |
9 | http://opensource.org/licenses/bsd-license.php.\r | |
10 | \r | |
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
13 | \r | |
14 | **/\r | |
15 | \r | |
16 | #ifndef __EFI_IP6_MLD_H__\r | |
17 | #define __EFI_IP6_MLD_H__\r | |
18 | \r | |
19 | #define IP6_UNSOLICITED_REPORT_INTERVAL 10\r | |
20 | \r | |
21 | #pragma pack(1)\r | |
22 | typedef struct {\r | |
23 | IP6_ICMP_HEAD Head;\r | |
24 | UINT16 MaxRespDelay;\r | |
25 | UINT16 Reserved;\r | |
26 | EFI_IPv6_ADDRESS Group;\r | |
27 | } IP6_MLD_HEAD;\r | |
28 | #pragma pack()\r | |
29 | \r | |
30 | //\r | |
31 | // The status of multicast group. It isn't necessary to maintain\r | |
32 | // explicit state of host state diagram. A group with finity\r | |
33 | // DelayTime (less than 0xffffffff) is in "delaying listener" state. otherwise, it is in\r | |
34 | // "idle listener" state.\r | |
35 | //\r | |
36 | typedef struct {\r | |
37 | LIST_ENTRY Link;\r | |
38 | INTN RefCnt;\r | |
39 | EFI_IPv6_ADDRESS Address;\r | |
40 | UINT32 DelayTimer;\r | |
41 | BOOLEAN SendByUs;\r | |
42 | EFI_MAC_ADDRESS Mac;\r | |
43 | } IP6_MLD_GROUP;\r | |
44 | \r | |
45 | //\r | |
46 | // The MLD status. Each IP6 service instance has a MLD_SERVICE_DATA\r | |
47 | // attached. The Mldv1QuerySeen remember whether the server on this\r | |
48 | // connected network is v1 or v2.\r | |
49 | //\r | |
50 | typedef struct {\r | |
51 | INTN Mldv1QuerySeen;\r | |
52 | LIST_ENTRY Groups;\r | |
53 | } IP6_MLD_SERVICE_DATA;\r | |
54 | \r | |
55 | /**\r | |
56 | Search a IP6_MLD_GROUP list entry node from a list array.\r | |
57 | \r | |
58 | @param[in] IpSb Points to an IP6 service binding instance.\r | |
59 | @param[in] MulticastAddr The IPv6 multicast address to be searched.\r | |
60 | \r | |
61 | @return The found IP6_ML_GROUP list entry or NULL.\r | |
62 | \r | |
63 | **/\r | |
64 | IP6_MLD_GROUP *\r | |
65 | Ip6FindMldEntry (\r | |
66 | IN IP6_SERVICE *IpSb,\r | |
67 | IN EFI_IPv6_ADDRESS *MulticastAddr\r | |
68 | );\r | |
69 | \r | |
70 | /**\r | |
71 | Init the MLD data of the IP6 service instance, configure\r | |
72 | MNP to receive ALL SYSTEM multicasts.\r | |
73 | \r | |
74 | @param[in] IpSb The IP6 service whose MLD is to be initialized.\r | |
75 | \r | |
76 | @retval EFI_OUT_OF_RESOURCES There are not sufficient resources to complete the\r | |
77 | operation.\r | |
78 | @retval EFI_SUCCESS The MLD module successfully initialized.\r | |
79 | \r | |
80 | **/\r | |
81 | EFI_STATUS\r | |
82 | Ip6InitMld (\r | |
83 | IN IP6_SERVICE *IpSb\r | |
84 | );\r | |
85 | \r | |
86 | /**\r | |
87 | Join the multicast group on behalf of this IP6 service binding instance.\r | |
88 | \r | |
89 | @param[in] IpSb The IP6 service binding instance.\r | |
90 | @param[in] Interface Points to an IP6_INTERFACE structure.\r | |
91 | @param[in] Address The group address to join.\r | |
92 | \r | |
93 | @retval EFI_SUCCESS Successfully joined the multicast group.\r | |
94 | @retval EFI_OUT_OF_RESOURCES Failed to allocate resources.\r | |
95 | @retval Others Failed to join the multicast group.\r | |
96 | \r | |
97 | **/\r | |
98 | EFI_STATUS\r | |
99 | Ip6JoinGroup (\r | |
100 | IN IP6_SERVICE *IpSb,\r | |
101 | IN IP6_INTERFACE *Interface,\r | |
102 | IN EFI_IPv6_ADDRESS *Address\r | |
103 | );\r | |
104 | \r | |
105 | /**\r | |
106 | Leave the IP6 multicast group.\r | |
107 | \r | |
108 | @param[in] IpSb The IP6 service binding instance.\r | |
109 | @param[in] Address The group address to leave.\r | |
110 | \r | |
111 | @retval EFI_NOT_FOUND The IP6 service instance isn't in the group.\r | |
112 | @retval EFI_SUCCESS Successfully left the multicast group.\r | |
113 | @retval Others Failed to leave the multicast group.\r | |
114 | \r | |
115 | **/\r | |
116 | EFI_STATUS\r | |
117 | Ip6LeaveGroup (\r | |
118 | IN IP6_SERVICE *IpSb,\r | |
119 | IN EFI_IPv6_ADDRESS *Address\r | |
120 | );\r | |
121 | \r | |
122 | /**\r | |
123 | Worker function for EfiIp6Groups(). The caller\r | |
124 | should verify that the parameters are valid.\r | |
125 | \r | |
126 | @param[in] IpInstance The IP6 child to change the setting.\r | |
127 | @param[in] JoinFlag TRUE to join the group, otherwise leave it.\r | |
128 | @param[in] GroupAddress The target group address. If NULL, leave all\r | |
129 | the group addresses.\r | |
130 | \r | |
131 | @retval EFI_ALREADY_STARTED Wants to join the group, but is already a member of it.\r | |
132 | @retval EFI_OUT_OF_RESOURCES Failed to allocate some resources.\r | |
133 | @retval EFI_DEVICE_ERROR Failed to set the group configuraton.\r | |
134 | @retval EFI_SUCCESS Successfully updated the group setting.\r | |
135 | @retval EFI_NOT_FOUND Tried to leave a group of whom it isn't a member.\r | |
136 | \r | |
137 | **/\r | |
138 | EFI_STATUS\r | |
139 | Ip6Groups (\r | |
140 | IN IP6_PROTOCOL *IpInstance,\r | |
141 | IN BOOLEAN JoinFlag,\r | |
142 | IN EFI_IPv6_ADDRESS *GroupAddress OPTIONAL\r | |
143 | );\r | |
144 | \r | |
145 | /**\r | |
146 | Process the Multicast Listener Query message.\r | |
147 | \r | |
148 | @param[in] IpSb The IP service that received the packet.\r | |
149 | @param[in] Head The IP head of the MLD query packet.\r | |
150 | @param[in] Packet The content of the MLD query packet with IP head\r | |
151 | removed.\r | |
152 | \r | |
153 | @retval EFI_SUCCESS The MLD query packet processed successfully.\r | |
154 | @retval EFI_INVALID_PARAMETER The packet is invalid.\r | |
155 | @retval Others Failed to process the packet.\r | |
156 | \r | |
157 | **/\r | |
158 | EFI_STATUS\r | |
159 | Ip6ProcessMldQuery (\r | |
160 | IN IP6_SERVICE *IpSb,\r | |
161 | IN EFI_IP6_HEADER *Head,\r | |
162 | IN NET_BUF *Packet\r | |
163 | );\r | |
164 | \r | |
165 | /**\r | |
166 | Process the Multicast Listener Report message.\r | |
167 | \r | |
168 | @param[in] IpSb The IP service that received the packet.\r | |
169 | @param[in] Head The IP head of the MLD report packet.\r | |
170 | @param[in] Packet The content of the MLD report packet with IP head\r | |
171 | removed.\r | |
172 | \r | |
173 | @retval EFI_SUCCESS The MLD report packet processed successfully.\r | |
174 | @retval EFI_INVALID_PARAMETER The packet is invalid.\r | |
175 | \r | |
176 | **/\r | |
177 | EFI_STATUS\r | |
178 | Ip6ProcessMldReport (\r | |
179 | IN IP6_SERVICE *IpSb,\r | |
180 | IN EFI_IP6_HEADER *Head,\r | |
181 | IN NET_BUF *Packet\r | |
182 | );\r | |
183 | \r | |
184 | \r | |
185 | /**\r | |
186 | The heartbeat timer of the MLD module. It sends out solicited MLD report when\r | |
187 | DelayTimer expires.\r | |
188 | \r | |
189 | @param[in] IpSb The IP6 service binding instance.\r | |
190 | \r | |
191 | **/\r | |
192 | VOID\r | |
193 | Ip6MldTimerTicking (\r | |
194 | IN IP6_SERVICE *IpSb\r | |
195 | );\r | |
196 | \r | |
197 | #endif\r | |
198 | \r |