diff options
Diffstat (limited to 'NetworkPkg/IScsiDxe/IScsiDhcp6.c')
| -rw-r--r-- | NetworkPkg/IScsiDxe/IScsiDhcp6.c | 505 |
1 files changed, 505 insertions, 0 deletions
diff --git a/NetworkPkg/IScsiDxe/IScsiDhcp6.c b/NetworkPkg/IScsiDxe/IScsiDhcp6.c new file mode 100644 index 0000000000..2bf102ba8b --- /dev/null +++ b/NetworkPkg/IScsiDxe/IScsiDhcp6.c @@ -0,0 +1,505 @@ +/** @file
+ iSCSI DHCP6 related configuration routines.
+
+Copyright (c) 2009 - 2011, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution. The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include "IScsiImpl.h"
+
+
+/**
+ Extract the Root Path option and get the required target information from
+ Boot File Uniform Resource Locator (URL) Option.
+
+ @param[in] RootPath The RootPath string.
+ @param[in] Length Length of the RootPath option payload.
+ @param[in, out] ConfigData The iSCSI session configuration data read from
+ nonvolatile device.
+
+ @retval EFI_SUCCESS All required information is extracted from the
+ RootPath option.
+ @retval EFI_NOT_FOUND The RootPath is not an iSCSI RootPath.
+ @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.
+ @retval EFI_INVALID_PARAMETER The RootPath is malformatted.
+
+**/
+EFI_STATUS
+IScsiDhcp6ExtractRootPath (
+ IN CHAR8 *RootPath,
+ IN UINT16 Length,
+ IN OUT ISCSI_ATTEMPT_CONFIG_NVDATA *ConfigData
+ )
+{
+ EFI_STATUS Status;
+ UINT16 IScsiRootPathIdLen;
+ CHAR8 *TmpStr;
+ ISCSI_ROOT_PATH_FIELD Fields[RP_FIELD_IDX_MAX];
+ ISCSI_ROOT_PATH_FIELD *Field;
+ UINT32 FieldIndex;
+ UINT8 Index;
+ ISCSI_SESSION_CONFIG_NVDATA *ConfigNvData;
+ EFI_IP_ADDRESS Ip;
+ UINT8 IpMode;
+
+ ConfigNvData = &ConfigData->SessionConfigData;
+
+ //
+ // "iscsi:"<servername>":"<protocol>":"<port>":"<LUN>":"<targetname>
+ //
+ IScsiRootPathIdLen = (UINT16) AsciiStrLen (ISCSI_ROOT_PATH_ID);
+
+ if ((Length <= IScsiRootPathIdLen) ||
+ (CompareMem (RootPath, ISCSI_ROOT_PATH_ID, IScsiRootPathIdLen) != 0)) {
+ return EFI_NOT_FOUND;
+ }
+ //
+ // Skip the iSCSI RootPath ID "iscsi:".
+ //
+ RootPath = RootPath + IScsiRootPathIdLen;
+ Length = (UINT16) (Length - IScsiRootPathIdLen);
+
+ TmpStr = (CHAR8 *) AllocatePool (Length + 1);
+ if (TmpStr == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ CopyMem (TmpStr, RootPath, Length);
+ TmpStr[Length] = '\0';
+
+ Index = 0;
+ FieldIndex = 0;
+ ZeroMem (&Fields[0], sizeof (Fields));
+
+ //
+ // Extract SERVERNAME field in the Root Path option.
+ //
+ if (TmpStr[Index] != ISCSI_ROOT_PATH_ADDR_START_DELIMITER) {
+ Status = EFI_INVALID_PARAMETER;
+ goto ON_EXIT;
+ } else {
+ Index++;
+ }
+
+ Fields[RP_FIELD_IDX_SERVERNAME].Str = &TmpStr[Index];
+
+ while ((TmpStr[Index] != ISCSI_ROOT_PATH_ADDR_END_DELIMITER) && (Index < Length)) {
+ Index++;
+ }
+
+ //
+ // Skip ']' and ':'.
+ //
+ TmpStr[Index] = '\0';
+ Index += 2;
+
+ Fields[RP_FIELD_IDX_SERVERNAME].Len = (UINT8) AsciiStrLen (Fields[RP_FIELD_IDX_SERVERNAME].Str);
+
+ //
+ // Extract others fields in the Root Path option string.
+ //
+ for (FieldIndex = 1; (FieldIndex < RP_FIELD_IDX_MAX) && (Index < Length); FieldIndex++) {
+
+ if (TmpStr[Index] != ISCSI_ROOT_PATH_FIELD_DELIMITER) {
+ Fields[FieldIndex].Str = &TmpStr[Index];
+ }
+
+ while ((TmpStr[Index] != ISCSI_ROOT_PATH_FIELD_DELIMITER) && (Index < Length)) {
+ Index++;
+ }
+
+ if (TmpStr[Index] == ISCSI_ROOT_PATH_FIELD_DELIMITER) {
+ if (FieldIndex != RP_FIELD_IDX_TARGETNAME) {
+ TmpStr[Index] = '\0';
+ Index++;
+ }
+
+ if (Fields[FieldIndex].Str != NULL) {
+ Fields[FieldIndex].Len = (UINT8) AsciiStrLen (Fields[FieldIndex].Str);
+ }
+ }
+ }
+
+ if (FieldIndex != RP_FIELD_IDX_MAX) {
+ Status = EFI_INVALID_PARAMETER;
+ goto ON_EXIT;
+ }
+
+ if ((Fields[RP_FIELD_IDX_SERVERNAME].Str == NULL) ||
+ (Fields[RP_FIELD_IDX_TARGETNAME].Str == NULL) ||
+ (Fields[RP_FIELD_IDX_PROTOCOL].Len > 1)
+ ) {
+
+ Status = EFI_INVALID_PARAMETER;
+ goto ON_EXIT;
+ }
+ //
+ // Get the IP address of the target.
+ //
+ Field = &Fields[RP_FIELD_IDX_SERVERNAME];
+ if (ConfigNvData->IpMode < IP_MODE_AUTOCONFIG) {
+ IpMode = ConfigNvData->IpMode;
+ } else {
+ IpMode = ConfigData->AutoConfigureMode;
+ }
+
+ Status = IScsiAsciiStrToIp (Field->Str, IpMode, &Ip);
+ CopyMem (&ConfigNvData->TargetIp, &Ip, sizeof (EFI_IP_ADDRESS));
+
+
+ if (EFI_ERROR (Status)) {
+ goto ON_EXIT;
+ }
+ //
+ // Check the protocol type.
+ //
+ Field = &Fields[RP_FIELD_IDX_PROTOCOL];
+ if ((Field->Str != NULL) && ((*(Field->Str) - '0') != EFI_IP_PROTO_TCP)) {
+ Status = EFI_INVALID_PARAMETER;
+ goto ON_EXIT;
+ }
+ //
+ // Get the port of the iSCSI target.
+ //
+ Field = &Fields[RP_FIELD_IDX_PORT];
+ if (Field->Str != NULL) {
+ ConfigNvData->TargetPort = (UINT16) AsciiStrDecimalToUintn (Field->Str);
+ } else {
+ ConfigNvData->TargetPort = ISCSI_WELL_KNOWN_PORT;
+ }
+ //
+ // Get the LUN.
+ //
+ Field = &Fields[RP_FIELD_IDX_LUN];
+ if (Field->Str != NULL) {
+ Status = IScsiAsciiStrToLun (Field->Str, ConfigNvData->BootLun);
+ if (EFI_ERROR (Status)) {
+ goto ON_EXIT;
+ }
+ } else {
+ ZeroMem (ConfigNvData->BootLun, sizeof (ConfigNvData->BootLun));
+ }
+ //
+ // Get the target iSCSI Name.
+ //
+ Field = &Fields[RP_FIELD_IDX_TARGETNAME];
+
+ if (AsciiStrLen (Field->Str) > ISCSI_NAME_MAX_SIZE - 1) {
+ Status = EFI_INVALID_PARAMETER;
+ goto ON_EXIT;
+ }
+ //
+ // Validate the iSCSI name.
+ //
+ Status = IScsiNormalizeName (Field->Str, AsciiStrLen (Field->Str));
+ if (EFI_ERROR (Status)) {
+ goto ON_EXIT;
+ }
+
+ AsciiStrCpy (ConfigNvData->TargetName, Field->Str);
+
+ON_EXIT:
+
+ FreePool (TmpStr);
+
+ return Status;
+}
+
+/**
+ EFI_DHCP6_INFO_CALLBACK is provided by the consumer of the EFI DHCPv6 Protocol
+ instance to intercept events that occurs in the DHCPv6 Information Request
+ exchange process.
+
+ @param[in] This Pointer to the EFI_DHCP6_PROTOCOL instance that
+ is used to configure this callback function.
+ @param[in] Context Pointer to the context that is initialized in
+ the EFI_DHCP6_PROTOCOL.InfoRequest().
+ @param[in] Packet Pointer to Reply packet that has been received.
+ The EFI DHCPv6 Protocol instance is responsible
+ for freeing the buffer.
+
+ @retval EFI_SUCCESS Tell the EFI DHCPv6 Protocol instance to finish
+ Information Request exchange process.
+ @retval EFI_NOT_READY Tell the EFI DHCPv6 Protocol instance to continue
+ Information Request exchange process.
+ @retval EFI_ABORTED Tell the EFI DHCPv6 Protocol instance to abort
+ the Information Request exchange process.
+ @retval EFI_UNSUPPORTED Tell the EFI DHCPv6 Protocol instance to finish
+ the Information Request exchange process because some
+ request information are not received.
+
+**/
+EFI_STATUS
+EFIAPI
+IScsiDhcp6ParseReply (
+ IN EFI_DHCP6_PROTOCOL *This,
+ IN VOID *Context,
+ IN EFI_DHCP6_PACKET *Packet
+ )
+{
+ EFI_STATUS Status;
+ UINT32 Index;
+ UINT32 OptionCount;
+ EFI_DHCP6_PACKET_OPTION *BootFileOpt;
+ EFI_DHCP6_PACKET_OPTION **OptionList;
+ ISCSI_ATTEMPT_CONFIG_NVDATA *ConfigData;
+
+ OptionCount = 0;
+ BootFileOpt = NULL;
+
+ Status = This->Parse (This, Packet, &OptionCount, NULL);
+ if (Status != EFI_BUFFER_TOO_SMALL) {
+ return EFI_NOT_READY;
+ }
+
+ OptionList = AllocateZeroPool (OptionCount * sizeof (EFI_DHCP6_PACKET_OPTION *));
+ if (OptionList == NULL) {
+ return EFI_NOT_READY;
+ }
+
+ Status = This->Parse (This, Packet, &OptionCount, OptionList);
+ if (EFI_ERROR (Status)) {
+ Status = EFI_NOT_READY;
+ goto Exit;
+ }
+
+ ConfigData = (ISCSI_ATTEMPT_CONFIG_NVDATA *) Context;
+
+ for (Index = 0; Index < OptionCount; Index++) {
+ OptionList[Index]->OpCode = NTOHS (OptionList[Index]->OpCode);
+ OptionList[Index]->OpLen = NTOHS (OptionList[Index]->OpLen);
+
+ //
+ // Get DNS server addresses from this reply packet.
+ //
+ if (OptionList[Index]->OpCode == DHCP6_OPT_DNS_SERVERS) {
+
+ if (((OptionList[Index]->OpLen & 0xf) != 0) || (OptionList[Index]->OpLen == 0)) {
+ Status = EFI_INVALID_PARAMETER;
+ goto Exit;
+ }
+ //
+ // Primary DNS server address.
+ //
+ CopyMem (&ConfigData->PrimaryDns, &OptionList[Index]->Data[0], sizeof (EFI_IPv6_ADDRESS));
+
+ if (OptionList[Index]->OpLen > 16) {
+ //
+ // Secondary DNS server address
+ //
+ CopyMem (&ConfigData->SecondaryDns, &OptionList[Index]->Data[16], sizeof (EFI_IPv6_ADDRESS));
+ }
+
+ } else if (OptionList[Index]->OpCode == DHCP6_OPT_BOOT_FILE_URL) {
+ //
+ // The server sends this option to inform the client about an URL to a boot file.
+ //
+ BootFileOpt = OptionList[Index];
+ }
+ }
+
+ if (BootFileOpt == NULL) {
+ Status = EFI_UNSUPPORTED;
+ goto Exit;
+ }
+
+ //
+ // Get iSCSI root path from Boot File Uniform Resource Locator (URL) Option
+ //
+ Status = IScsiDhcp6ExtractRootPath (
+ (CHAR8 *) BootFileOpt->Data,
+ BootFileOpt->OpLen,
+ ConfigData
+ );
+
+Exit:
+
+ FreePool (OptionList);
+ return Status;
+}
+
+
+/**
+ Parse the DHCP ACK to get the address configuration and DNS information.
+
+ @param[in] Image The handle of the driver image.
+ @param[in] Controller The handle of the controller;
+ @param[in, out] ConfigData The attempt configuration data.
+
+ @retval EFI_SUCCESS The DNS information is got from the DHCP ACK.
+ @retval EFI_NO_MAPPING DHCP failed to acquire address and other
+ information.
+ @retval EFI_INVALID_PARAMETER The DHCP ACK's DNS option is malformatted.
+ @retval EFI_DEVICE_ERROR Some unexpected error occurred.
+ @retval EFI_OUT_OF_RESOURCES There is no sufficient resource to finish the
+ operation.
+ @retval EFI_NO_MEDIA There was a media error.
+
+**/
+EFI_STATUS
+IScsiDoDhcp6 (
+ IN EFI_HANDLE Image,
+ IN EFI_HANDLE Controller,
+ IN OUT ISCSI_ATTEMPT_CONFIG_NVDATA *ConfigData
+ )
+{
+ EFI_HANDLE Dhcp6Handle;
+ EFI_DHCP6_PROTOCOL *Dhcp6;
+ EFI_STATUS Status;
+ EFI_STATUS TimerStatus;
+ EFI_DHCP6_PACKET_OPTION *Oro;
+ EFI_DHCP6_RETRANSMISSION InfoReqReXmit;
+ EFI_EVENT Timer;
+ BOOLEAN MediaPresent;
+
+ //
+ // Check media status before doing DHCP.
+ //
+ MediaPresent = TRUE;
+ NetLibDetectMedia (Controller, &MediaPresent);
+ if (!MediaPresent) {
+ return EFI_NO_MEDIA;
+ }
+
+ //
+ // iSCSI will only request target info from DHCPv6 server.
+ //
+ if (!ConfigData->SessionConfigData.TargetInfoFromDhcp) {
+ return EFI_SUCCESS;
+ }
+
+ Dhcp6Handle = NULL;
+ Dhcp6 = NULL;
+ Oro = NULL;
+ Timer = NULL;
+
+ //
+ // Create a DHCP6 child instance and get the protocol.
+ //
+ Status = NetLibCreateServiceChild (
+ Controller,
+ Image,
+ &gEfiDhcp6ServiceBindingProtocolGuid,
+ &Dhcp6Handle
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ Status = gBS->OpenProtocol (
+ Dhcp6Handle,
+ &gEfiDhcp6ProtocolGuid,
+ (VOID **) &Dhcp6,
+ Image,
+ Controller,
+ EFI_OPEN_PROTOCOL_BY_DRIVER
+ );
+ if (EFI_ERROR (Status)) {
+ goto ON_EXIT;
+ }
+
+ Oro = AllocateZeroPool (sizeof (EFI_DHCP6_PACKET_OPTION) + 3);
+ if (Oro == NULL) {
+ Status = EFI_OUT_OF_RESOURCES;
+ goto ON_EXIT;
+ }
+
+ //
+ // Ask the server to reply with DNS and Boot File URL options by info request.
+ // All members in EFI_DHCP6_PACKET_OPTION are in network order.
+ //
+ Oro->OpCode = HTONS (DHCP6_OPT_REQUEST_OPTION);
+ Oro->OpLen = HTONS (2 * 2);
+ Oro->Data[1] = DHCP6_OPT_DNS_SERVERS;
+ Oro->Data[3] = DHCP6_OPT_BOOT_FILE_URL;
+
+ InfoReqReXmit.Irt = 4;
+ InfoReqReXmit.Mrc = 1;
+ InfoReqReXmit.Mrt = 10;
+ InfoReqReXmit.Mrd = 30;
+
+ Status = Dhcp6->InfoRequest (
+ Dhcp6,
+ TRUE,
+ Oro,
+ 0,
+ NULL,
+ &InfoReqReXmit,
+ NULL,
+ IScsiDhcp6ParseReply,
+ ConfigData
+ );
+ if (Status == EFI_NO_MAPPING) {
+ Status = gBS->CreateEvent (EVT_TIMER, TPL_CALLBACK, NULL, NULL, &Timer);
+ if (EFI_ERROR (Status)) {
+ goto ON_EXIT;
+ }
+
+ Status = gBS->SetTimer (
+ Timer,
+ TimerRelative,
+ ISCSI_GET_MAPPING_TIMEOUT
+ );
+
+ if (EFI_ERROR (Status)) {
+ goto ON_EXIT;
+ }
+
+ do {
+
+ TimerStatus = gBS->CheckEvent (Timer);
+
+ if (!EFI_ERROR (TimerStatus)) {
+ Status = Dhcp6->InfoRequest (
+ Dhcp6,
+ TRUE,
+ Oro,
+ 0,
+ NULL,
+ &InfoReqReXmit,
+ NULL,
+ IScsiDhcp6ParseReply,
+ ConfigData
+ );
+ }
+
+ } while (TimerStatus == EFI_NOT_READY);
+
+ }
+
+ON_EXIT:
+
+ if (Oro != NULL) {
+ FreePool (Oro);
+ }
+
+ if (Timer != NULL) {
+ gBS->CloseEvent (Timer);
+ }
+
+ if (Dhcp6 != NULL) {
+ gBS->CloseProtocol (
+ Dhcp6Handle,
+ &gEfiDhcp6ProtocolGuid,
+ Image,
+ Controller
+ );
+ }
+
+ NetLibDestroyServiceChild (
+ Controller,
+ Image,
+ &gEfiDhcp6ServiceBindingProtocolGuid,
+ Dhcp6Handle
+ );
+
+ return Status;
+}
+
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