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1 | /** @file\r | |
2 | Implementation of converting an multicast IP address to multicast HW MAC\r | |
3 | address.\r | |
4 | \r | |
5 | Copyright (c) 2004 - 2018, Intel Corporation. All rights reserved.<BR>\r | |
6 | SPDX-License-Identifier: BSD-2-Clause-Patent\r | |
7 | \r | |
8 | **/\r | |
9 | \r | |
10 | #include "Snp.h"\r | |
11 | \r | |
12 | /**\r | |
13 | Call undi to convert an multicast IP address to a MAC address.\r | |
14 | \r | |
15 | @param Snp Pointer to snp driver structure.\r | |
16 | @param IPv6 Flag to indicate if this is an ipv6 address.\r | |
17 | @param IP Multicast IP address.\r | |
18 | @param MAC Pointer to hold the return MAC address.\r | |
19 | \r | |
20 | @retval EFI_SUCCESS The multicast IP address was mapped to the\r | |
21 | multicast HW MAC address.\r | |
22 | @retval EFI_INVALID_PARAMETER Invalid UNDI command.\r | |
23 | @retval EFI_UNSUPPORTED Command is not supported by UNDI.\r | |
24 | @retval EFI_DEVICE_ERROR Fail to execute UNDI command.\r | |
25 | \r | |
26 | **/\r | |
27 | EFI_STATUS\r | |
28 | PxeIp2Mac (\r | |
29 | IN SNP_DRIVER *Snp,\r | |
30 | IN BOOLEAN IPv6,\r | |
31 | IN EFI_IP_ADDRESS *IP,\r | |
32 | IN OUT EFI_MAC_ADDRESS *MAC\r | |
33 | )\r | |
34 | {\r | |
35 | PXE_CPB_MCAST_IP_TO_MAC *Cpb;\r | |
36 | PXE_DB_MCAST_IP_TO_MAC *Db;\r | |
37 | \r | |
38 | Cpb = Snp->Cpb;\r | |
39 | Db = Snp->Db;\r | |
40 | Snp->Cdb.OpCode = PXE_OPCODE_MCAST_IP_TO_MAC;\r | |
41 | Snp->Cdb.OpFlags = (UINT16) (IPv6 ? PXE_OPFLAGS_MCAST_IPV6_TO_MAC : PXE_OPFLAGS_MCAST_IPV4_TO_MAC);\r | |
42 | Snp->Cdb.CPBsize = (UINT16) sizeof (PXE_CPB_MCAST_IP_TO_MAC);\r | |
43 | Snp->Cdb.DBsize = (UINT16) sizeof (PXE_DB_MCAST_IP_TO_MAC);\r | |
44 | \r | |
45 | Snp->Cdb.CPBaddr = (UINT64)(UINTN) Cpb;\r | |
46 | Snp->Cdb.DBaddr = (UINT64)(UINTN) Db;\r | |
47 | \r | |
48 | Snp->Cdb.StatCode = PXE_STATCODE_INITIALIZE;\r | |
49 | Snp->Cdb.StatFlags = PXE_STATFLAGS_INITIALIZE;\r | |
50 | Snp->Cdb.IFnum = Snp->IfNum;\r | |
51 | Snp->Cdb.Control = PXE_CONTROL_LAST_CDB_IN_LIST;\r | |
52 | \r | |
53 | CopyMem (&Cpb->IP, IP, sizeof (PXE_IP_ADDR));\r | |
54 | \r | |
55 | //\r | |
56 | // Issue UNDI command and check result.\r | |
57 | //\r | |
58 | DEBUG ((EFI_D_NET, "\nSnp->undi.mcast_ip_to_mac() "));\r | |
59 | \r | |
60 | (*Snp->IssueUndi32Command) ((UINT64)(UINTN) &Snp->Cdb);\r | |
61 | \r | |
62 | switch (Snp->Cdb.StatCode) {\r | |
63 | case PXE_STATCODE_SUCCESS:\r | |
64 | break;\r | |
65 | \r | |
66 | case PXE_STATCODE_INVALID_CPB:\r | |
67 | return EFI_INVALID_PARAMETER;\r | |
68 | \r | |
69 | case PXE_STATCODE_UNSUPPORTED:\r | |
70 | DEBUG (\r | |
71 | (EFI_D_NET,\r | |
72 | "\nSnp->undi.mcast_ip_to_mac() %xh:%xh\n",\r | |
73 | Snp->Cdb.StatFlags,\r | |
74 | Snp->Cdb.StatCode)\r | |
75 | );\r | |
76 | return EFI_UNSUPPORTED;\r | |
77 | \r | |
78 | default:\r | |
79 | //\r | |
80 | // UNDI command failed. Return EFI_DEVICE_ERROR\r | |
81 | // to caller.\r | |
82 | //\r | |
83 | DEBUG (\r | |
84 | (EFI_D_NET,\r | |
85 | "\nSnp->undi.mcast_ip_to_mac() %xh:%xh\n",\r | |
86 | Snp->Cdb.StatFlags,\r | |
87 | Snp->Cdb.StatCode)\r | |
88 | );\r | |
89 | \r | |
90 | return EFI_DEVICE_ERROR;\r | |
91 | }\r | |
92 | \r | |
93 | CopyMem (MAC, &Db->MAC, sizeof (PXE_MAC_ADDR));\r | |
94 | return EFI_SUCCESS;\r | |
95 | }\r | |
96 | \r | |
97 | \r | |
98 | /**\r | |
99 | Converts a multicast IP address to a multicast HW MAC address.\r | |
100 | \r | |
101 | This function converts a multicast IP address to a multicast HW MAC address\r | |
102 | for all packet transactions. If the mapping is accepted, then EFI_SUCCESS will\r | |
103 | be returned.\r | |
104 | \r | |
105 | @param This A pointer to the EFI_SIMPLE_NETWORK_PROTOCOL instance.\r | |
106 | @param IPv6 Set to TRUE if the multicast IP address is IPv6 [RFC 2460].\r | |
107 | Set to FALSE if the multicast IP address is IPv4 [RFC 791].\r | |
108 | @param IP The multicast IP address that is to be converted to a multicast\r | |
109 | HW MAC address.\r | |
110 | @param MAC The multicast HW MAC address that is to be generated from IP.\r | |
111 | \r | |
112 | @retval EFI_SUCCESS The multicast IP address was mapped to the\r | |
113 | multicast HW MAC address.\r | |
114 | @retval EFI_NOT_STARTED The Simple Network Protocol interface has not\r | |
115 | been started by calling Start().\r | |
116 | @retval EFI_INVALID_PARAMETER IP is NULL.\r | |
117 | @retval EFI_INVALID_PARAMETER MAC is NULL.\r | |
118 | @retval EFI_INVALID_PARAMETER IP does not point to a valid IPv4 or IPv6\r | |
119 | multicast address.\r | |
120 | @retval EFI_DEVICE_ERROR The Simple Network Protocol interface has not\r | |
121 | been initialized by calling Initialize().\r | |
122 | @retval EFI_UNSUPPORTED IPv6 is TRUE and the implementation does not\r | |
123 | support IPv6 multicast to MAC address conversion.\r | |
124 | \r | |
125 | **/\r | |
126 | EFI_STATUS\r | |
127 | EFIAPI\r | |
128 | SnpUndi32McastIpToMac (\r | |
129 | IN EFI_SIMPLE_NETWORK_PROTOCOL *This,\r | |
130 | IN BOOLEAN IPv6,\r | |
131 | IN EFI_IP_ADDRESS *IP,\r | |
132 | OUT EFI_MAC_ADDRESS *MAC\r | |
133 | )\r | |
134 | {\r | |
135 | SNP_DRIVER *Snp;\r | |
136 | EFI_TPL OldTpl;\r | |
137 | EFI_STATUS Status;\r | |
138 | \r | |
139 | //\r | |
140 | // Get pointer to SNP driver instance for *this.\r | |
141 | //\r | |
142 | if (This == NULL) {\r | |
143 | return EFI_INVALID_PARAMETER;\r | |
144 | }\r | |
145 | \r | |
146 | if (IP == NULL || MAC == NULL) {\r | |
147 | return EFI_INVALID_PARAMETER;\r | |
148 | }\r | |
149 | \r | |
150 | Snp = EFI_SIMPLE_NETWORK_DEV_FROM_THIS (This);\r | |
151 | \r | |
152 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r | |
153 | \r | |
154 | switch (Snp->Mode.State) {\r | |
155 | case EfiSimpleNetworkInitialized:\r | |
156 | break;\r | |
157 | \r | |
158 | case EfiSimpleNetworkStopped:\r | |
159 | Status = EFI_NOT_STARTED;\r | |
160 | goto ON_EXIT;\r | |
161 | \r | |
162 | default:\r | |
163 | Status = EFI_DEVICE_ERROR;\r | |
164 | goto ON_EXIT;\r | |
165 | }\r | |
166 | \r | |
167 | Status = PxeIp2Mac (Snp, IPv6, IP, MAC);\r | |
168 | \r | |
169 | ON_EXIT:\r | |
170 | gBS->RestoreTPL (OldTpl);\r | |
171 | \r | |
172 | return Status;\r | |
173 | }\r |