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f9a088de | 1 | /** @file\r |
d1102dba LG |
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 | |
9d510e61 | 6 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
f9a088de | 7 | \r |
f9a088de | 8 | **/\r |
9 | \r | |
10 | #include "Snp.h"\r | |
11 | \r | |
12 | /**\r | |
f3816027 | 13 | Call undi to convert an multicast IP address to a MAC address.\r |
f9a088de | 14 | \r |
f3816027 | 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 | |
f9a088de | 19 | \r |
d1102dba | 20 | @retval EFI_SUCCESS The multicast IP address was mapped to the\r |
f3816027 | 21 | multicast HW MAC address.\r |
d1102dba LG |
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 | |
f9a088de | 25 | \r |
26 | **/\r | |
f9a088de | 27 | EFI_STATUS\r |
4cda7726 | 28 | PxeIp2Mac (\r |
d1050b9d MK |
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 | |
f9a088de | 33 | )\r |
34 | {\r | |
d1050b9d MK |
35 | PXE_CPB_MCAST_IP_TO_MAC *Cpb;\r |
36 | PXE_DB_MCAST_IP_TO_MAC *Db;\r | |
f9a088de | 37 | \r |
d1050b9d MK |
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 | |
f9a088de | 44 | \r |
d1050b9d MK |
45 | Snp->Cdb.CPBaddr = (UINT64)(UINTN)Cpb;\r |
46 | Snp->Cdb.DBaddr = (UINT64)(UINTN)Db;\r | |
f9a088de | 47 | \r |
d1050b9d MK |
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 | |
f9a088de | 52 | \r |
4cda7726 | 53 | CopyMem (&Cpb->IP, IP, sizeof (PXE_IP_ADDR));\r |
f9a088de | 54 | \r |
55 | //\r | |
56 | // Issue UNDI command and check result.\r | |
57 | //\r | |
c49ca4a2 | 58 | DEBUG ((DEBUG_NET, "\nSnp->undi.mcast_ip_to_mac() "));\r |
f9a088de | 59 | \r |
d1050b9d | 60 | (*Snp->IssueUndi32Command)((UINT64)(UINTN)&Snp->Cdb);\r |
f9a088de | 61 | \r |
4cda7726 | 62 | switch (Snp->Cdb.StatCode) {\r |
d1050b9d MK |
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 | (DEBUG_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 | (DEBUG_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 | |
f9a088de | 91 | }\r |
92 | \r | |
4cda7726 | 93 | CopyMem (MAC, &Db->MAC, sizeof (PXE_MAC_ADDR));\r |
f9a088de | 94 | return EFI_SUCCESS;\r |
95 | }\r | |
96 | \r | |
f9a088de | 97 | /**\r |
4cda7726 | 98 | Converts a multicast IP address to a multicast HW MAC address.\r |
d1102dba LG |
99 | \r |
100 | This function converts a multicast IP address to a multicast HW MAC address\r | |
4cda7726 | 101 | for all packet transactions. If the mapping is accepted, then EFI_SUCCESS will\r |
102 | be returned.\r | |
103 | \r | |
104 | @param This A pointer to the EFI_SIMPLE_NETWORK_PROTOCOL instance.\r | |
105 | @param IPv6 Set to TRUE if the multicast IP address is IPv6 [RFC 2460].\r | |
d1102dba LG |
106 | Set to FALSE if the multicast IP address is IPv4 [RFC 791].\r |
107 | @param IP The multicast IP address that is to be converted to a multicast\r | |
4cda7726 | 108 | HW MAC address.\r |
109 | @param MAC The multicast HW MAC address that is to be generated from IP.\r | |
110 | \r | |
111 | @retval EFI_SUCCESS The multicast IP address was mapped to the\r | |
112 | multicast HW MAC address.\r | |
d1102dba | 113 | @retval EFI_NOT_STARTED The Simple Network Protocol interface has not\r |
4cda7726 | 114 | been started by calling Start().\r |
115 | @retval EFI_INVALID_PARAMETER IP is NULL.\r | |
116 | @retval EFI_INVALID_PARAMETER MAC is NULL.\r | |
d1102dba | 117 | @retval EFI_INVALID_PARAMETER IP does not point to a valid IPv4 or IPv6\r |
4cda7726 | 118 | multicast address.\r |
d1102dba | 119 | @retval EFI_DEVICE_ERROR The Simple Network Protocol interface has not\r |
4cda7726 | 120 | been initialized by calling Initialize().\r |
d1102dba | 121 | @retval EFI_UNSUPPORTED IPv6 is TRUE and the implementation does not\r |
4cda7726 | 122 | support IPv6 multicast to MAC address conversion.\r |
f9a088de | 123 | \r |
124 | **/\r | |
125 | EFI_STATUS\r | |
126 | EFIAPI\r | |
4cda7726 | 127 | SnpUndi32McastIpToMac (\r |
d1050b9d MK |
128 | IN EFI_SIMPLE_NETWORK_PROTOCOL *This,\r |
129 | IN BOOLEAN IPv6,\r | |
130 | IN EFI_IP_ADDRESS *IP,\r | |
131 | OUT EFI_MAC_ADDRESS *MAC\r | |
f9a088de | 132 | )\r |
133 | {\r | |
4cda7726 | 134 | SNP_DRIVER *Snp;\r |
f9a088de | 135 | EFI_TPL OldTpl;\r |
136 | EFI_STATUS Status;\r | |
137 | \r | |
138 | //\r | |
139 | // Get pointer to SNP driver instance for *this.\r | |
140 | //\r | |
4cda7726 | 141 | if (This == NULL) {\r |
f9a088de | 142 | return EFI_INVALID_PARAMETER;\r |
143 | }\r | |
144 | \r | |
d1050b9d | 145 | if ((IP == NULL) || (MAC == NULL)) {\r |
f9a088de | 146 | return EFI_INVALID_PARAMETER;\r |
147 | }\r | |
148 | \r | |
4cda7726 | 149 | Snp = EFI_SIMPLE_NETWORK_DEV_FROM_THIS (This);\r |
f9a088de | 150 | \r |
151 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r | |
152 | \r | |
4cda7726 | 153 | switch (Snp->Mode.State) {\r |
d1050b9d MK |
154 | case EfiSimpleNetworkInitialized:\r |
155 | break;\r | |
f9a088de | 156 | \r |
d1050b9d MK |
157 | case EfiSimpleNetworkStopped:\r |
158 | Status = EFI_NOT_STARTED;\r | |
159 | goto ON_EXIT;\r | |
f9a088de | 160 | \r |
d1050b9d MK |
161 | default:\r |
162 | Status = EFI_DEVICE_ERROR;\r | |
163 | goto ON_EXIT;\r | |
f9a088de | 164 | }\r |
165 | \r | |
4cda7726 | 166 | Status = PxeIp2Mac (Snp, IPv6, IP, MAC);\r |
f9a088de | 167 | \r |
168 | ON_EXIT:\r | |
169 | gBS->RestoreTPL (OldTpl);\r | |
170 | \r | |
171 | return Status;\r | |
172 | }\r |