/** @file\r
\r
-Copyright (c) 2005 - 2006, Intel Corporation.<BR>\r
-All rights reserved. This program and the accompanying materials\r
+Copyright (c) 2005 - 2017, Intel Corporation. All rights reserved.<BR>\r
+This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution. The full text of the license may be found at\r
http://opensource.org/licenses/bsd-license.php\r
\r
\r
/**\r
- Set the Ip4 variable data.\r
- \r
- Save the list of all of the IPv4 addresses and subnet masks that are currently\r
- being used to volatile variable storage.\r
+ Validate that Ip/Netmask pair is OK to be used as station\r
+ address. Only continuous netmasks are supported. and check\r
+ that StationAddress is a unicast address on the newtwork.\r
\r
- @param[in] IpSb Ip4 service binding instance\r
+ @param[in] Ip The IP address to validate.\r
+ @param[in] Netmask The netmaks of the IP.\r
\r
- @retval EFI_SUCCESS Successfully set variable.\r
- @retval EFI_OUT_OF_RESOURCES There are not enough resources to set the variable.\r
- @retval other Set variable failed.\r
+ @retval TRUE The Ip/Netmask pair is valid.\r
+ @retval FALSE The Ip/Netmask pair is invalid.\r
\r
**/\r
-EFI_STATUS\r
-Ip4SetVariableData (\r
- IN IP4_SERVICE *IpSb\r
+BOOLEAN\r
+Ip4StationAddressValid (\r
+ IN IP4_ADDR Ip,\r
+ IN IP4_ADDR Netmask\r
)\r
{\r
- UINT32 NumConfiguredInstance;\r
- LIST_ENTRY *Entry;\r
- UINTN VariableDataSize;\r
- EFI_IP4_VARIABLE_DATA *Ip4VariableData;\r
- EFI_IP4_ADDRESS_PAIR *Ip4AddressPair;\r
- IP4_PROTOCOL *IpInstance;\r
- CHAR16 *NewMacString;\r
- EFI_STATUS Status;\r
-\r
- NumConfiguredInstance = 0;\r
+ IP4_ADDR NetBrdcastMask;\r
+ INTN Len;\r
+ INTN Type;\r
\r
//\r
- // Go through the children list to count the configured children.\r
+ // Only support the station address with 0.0.0.0/0 to enable DHCP client.\r
//\r
- NET_LIST_FOR_EACH (Entry, &IpSb->Children) {\r
- IpInstance = NET_LIST_USER_STRUCT_S (Entry, IP4_PROTOCOL, Link, IP4_PROTOCOL_SIGNATURE);\r
-\r
- if (IpInstance->State == IP4_STATE_CONFIGED) {\r
- NumConfiguredInstance++;\r
- }\r
+ if (Netmask == IP4_ALLZERO_ADDRESS) {\r
+ return (BOOLEAN) (Ip == IP4_ALLZERO_ADDRESS);\r
}\r
\r
//\r
- // Calculate the size of the Ip4VariableData. As there may be no IP child,\r
- // we should add extra buffer for the address paris only if the number of configured\r
- // children is more than 1.\r
+ // Only support the continuous net masks\r
//\r
- VariableDataSize = sizeof (EFI_IP4_VARIABLE_DATA);\r
-\r
- if (NumConfiguredInstance > 1) {\r
- VariableDataSize += sizeof (EFI_IP4_ADDRESS_PAIR) * (NumConfiguredInstance - 1);\r
- }\r
-\r
- Ip4VariableData = AllocatePool (VariableDataSize);\r
- if (Ip4VariableData == NULL) {\r
- return EFI_OUT_OF_RESOURCES;\r
+ if ((Len = NetGetMaskLength (Netmask)) == (IP4_MASK_MAX + 1)) {\r
+ return FALSE;\r
}\r
\r
- Ip4VariableData->DriverHandle = IpSb->Image;\r
- Ip4VariableData->AddressCount = NumConfiguredInstance;\r
-\r
- Ip4AddressPair = &Ip4VariableData->AddressPairs[0];\r
-\r
//\r
- // Go through the children list to fill the configured children's address pairs.\r
+ // Station address can't be class D or class E address\r
//\r
- NET_LIST_FOR_EACH (Entry, &IpSb->Children) {\r
- IpInstance = NET_LIST_USER_STRUCT_S (Entry, IP4_PROTOCOL, Link, IP4_PROTOCOL_SIGNATURE);\r
-\r
- if (IpInstance->State == IP4_STATE_CONFIGED) {\r
- Ip4AddressPair->InstanceHandle = IpInstance->Handle;\r
- EFI_IP4 (Ip4AddressPair->Ip4Address) = NTOHL (IpInstance->Interface->Ip);\r
- EFI_IP4 (Ip4AddressPair->SubnetMask) = NTOHL (IpInstance->Interface->SubnetMask);\r
-\r
- Ip4AddressPair++;\r
- }\r
+ if ((Type = NetGetIpClass (Ip)) > IP4_ADDR_CLASSC) {\r
+ return FALSE;\r
}\r
\r
//\r
- // Get the mac string.\r
+ // Station address can't be subnet broadcast/net broadcast address\r
//\r
- Status = NetLibGetMacString (IpSb->Controller, IpSb->Image, &NewMacString);\r
- if (EFI_ERROR (Status)) {\r
- goto ON_ERROR;\r
+ if ((Ip == (Ip & Netmask)) || (Ip == (Ip | ~Netmask))) {\r
+ return FALSE;\r
}\r
\r
- if (IpSb->MacString != NULL) {\r
- //\r
- // The variable is set already, we're going to update it.\r
- //\r
- if (StrCmp (IpSb->MacString, NewMacString) != 0) {\r
- //\r
- // The mac address is changed, delete the previous variable first.\r
- //\r
- gRT->SetVariable (\r
- IpSb->MacString,\r
- &gEfiIp4ServiceBindingProtocolGuid,\r
- EFI_VARIABLE_BOOTSERVICE_ACCESS,\r
- 0,\r
- NULL\r
- );\r
- }\r
+ NetBrdcastMask = gIp4AllMasks[MIN (Len, Type << 3)];\r
\r
- gBS->FreePool (IpSb->MacString);\r
+ if (Ip == (Ip | ~NetBrdcastMask)) {\r
+ return FALSE;\r
}\r
\r
- IpSb->MacString = NewMacString;\r
-\r
- Status = gRT->SetVariable (\r
- IpSb->MacString,\r
- &gEfiIp4ServiceBindingProtocolGuid,\r
- EFI_VARIABLE_BOOTSERVICE_ACCESS,\r
- VariableDataSize,\r
- (VOID *) Ip4VariableData\r
- );\r
-\r
-ON_ERROR:\r
-\r
- gBS->FreePool (Ip4VariableData);\r
-\r
- return Status;\r
-}\r
-\r
-\r
-/**\r
- Clear the variable and free the resource.\r
-\r
- @param[in] IpSb Ip4 service binding instance\r
-\r
-**/\r
-VOID\r
-Ip4ClearVariableData (\r
- IN IP4_SERVICE *IpSb\r
- )\r
-{\r
- ASSERT (IpSb->MacString != NULL);\r
-\r
- gRT->SetVariable (\r
- IpSb->MacString,\r
- &gEfiIp4ServiceBindingProtocolGuid,\r
- EFI_VARIABLE_BOOTSERVICE_ACCESS,\r
- 0,\r
- NULL\r
- );\r
-\r
- gBS->FreePool (IpSb->MacString);\r
- IpSb->MacString = NULL;\r
-}\r
+ return TRUE;\r
+}
\ No newline at end of file
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