/** @file\r
Network library.\r
\r
-Copyright (c) 2005 - 2007, Intel Corporation.<BR>\r
+Copyright (c) 2005 - 2009, Intel Corporation.<BR>\r
All rights reserved. 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
\r
#include <Uefi.h>\r
\r
+#include <Protocol/DriverBinding.h>\r
#include <Protocol/ServiceBinding.h>\r
#include <Protocol/SimpleNetwork.h>\r
-#include <Protocol/NicIp4Config.h>\r
+#include <Protocol/HiiConfigRouting.h>\r
#include <Protocol/ComponentName.h>\r
#include <Protocol/ComponentName2.h>\r
-#include <Protocol/Dpc.h>\r
+\r
+#include <Guid/NicIp4ConfigNvData.h>\r
\r
#include <Library/NetLib.h>\r
#include <Library/BaseLib.h>\r
#include <Library/UefiRuntimeServicesTableLib.h>\r
#include <Library/MemoryAllocationLib.h>\r
#include <Library/DevicePathLib.h>\r
-\r
-EFI_DPC_PROTOCOL *mDpc = NULL;\r
+#include <Library/HiiLib.h>\r
+#include <Library/PrintLib.h>\r
\r
GLOBAL_REMOVE_IF_UNREFERENCED CONST CHAR8 mNetLibHexStr[] = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};\r
\r
+#define NIC_ITEM_CONFIG_SIZE sizeof (NIC_IP4_CONFIG_INFO) + sizeof (EFI_IP4_ROUTE_TABLE) * MAX_IP4_CONFIG_IN_VARIABLE\r
+\r
//\r
// All the supported IP4 maskes in host byte order.\r
//\r
\r
EFI_IPv4_ADDRESS mZeroIp4Addr = {{0, 0, 0, 0}};\r
\r
+//\r
+// Any error level digitally larger than mNetDebugLevelMax \r
+// will be silently discarded.\r
+//\r
+UINTN mNetDebugLevelMax = NETDEBUG_LEVEL_ERROR;\r
+UINT32 mSyslogPacketSeq = 0xDEADBEEF;\r
+\r
+// \r
+// You can change mSyslogDstMac mSyslogDstIp and mSyslogSrcIp \r
+// here to direct the syslog packets to the syslog deamon. The \r
+// default is broadcast to both the ethernet and IP. \r
+//\r
+UINT8 mSyslogDstMac[NET_ETHER_ADDR_LEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};\r
+UINT32 mSyslogDstIp = 0xffffffff;\r
+UINT32 mSyslogSrcIp = 0;\r
+\r
+CHAR8 *\r
+mMonthName[] = {\r
+ "Jan",\r
+ "Feb",\r
+ "Mar",\r
+ "Apr",\r
+ "May",\r
+ "Jun",\r
+ "Jul",\r
+ "Aug",\r
+ "Sep",\r
+ "Oct",\r
+ "Nov",\r
+ "Dec"\r
+};\r
+\r
/**\r
- Return the length of the mask. If the mask is invalid,\r
- return the invalid length 33, which is IP4_MASK_NUM.\r
+ Locate the handles that support SNP, then open one of them \r
+ to send the syslog packets. The caller isn't required to close\r
+ the SNP after use because the SNP is opened by HandleProtocol.\r
+\r
+ @return The point to SNP if one is properly openned. Otherwise NULL\r
+\r
+**/\r
+EFI_SIMPLE_NETWORK_PROTOCOL *\r
+SyslogLocateSnp (\r
+ VOID\r
+ )\r
+{\r
+ EFI_SIMPLE_NETWORK_PROTOCOL *Snp;\r
+ EFI_STATUS Status;\r
+ EFI_HANDLE *Handles;\r
+ UINTN HandleCount;\r
+ UINTN Index;\r
+\r
+ //\r
+ // Locate the handles which has SNP installed.\r
+ //\r
+ Handles = NULL;\r
+ Status = gBS->LocateHandleBuffer (\r
+ ByProtocol,\r
+ &gEfiSimpleNetworkProtocolGuid,\r
+ NULL,\r
+ &HandleCount,\r
+ &Handles\r
+ );\r
+\r
+ if (EFI_ERROR (Status) || (HandleCount == 0)) {\r
+ return NULL;\r
+ }\r
+ \r
+ //\r
+ // Try to open one of the ethernet SNP protocol to send packet\r
+ //\r
+ Snp = NULL;\r
+ \r
+ for (Index = 0; Index < HandleCount; Index++) {\r
+ Status = gBS->HandleProtocol (\r
+ Handles[Index],\r
+ &gEfiSimpleNetworkProtocolGuid,\r
+ (VOID **) &Snp\r
+ );\r
+\r
+ if ((Status == EFI_SUCCESS) && (Snp != NULL) && \r
+ (Snp->Mode->IfType == NET_IFTYPE_ETHERNET) &&\r
+ (Snp->Mode->MaxPacketSize >= NET_SYSLOG_PACKET_LEN)) {\r
+ \r
+ break;\r
+ }\r
+\r
+ Snp = NULL;\r
+ }\r
+\r
+ FreePool (Handles);\r
+ return Snp;\r
+}\r
+\r
+/**\r
+ Transmit a syslog packet synchronously through SNP. The Packet\r
+ already has the ethernet header prepended. This function should \r
+ fill in the source MAC because it will try to locate a SNP each\r
+ time it is called to avoid the problem if SNP is unloaded.\r
+ This code snip is copied from MNP. \r
+\r
+ @param[in] Packet - The Syslog packet \r
+ @param[in] Length - The length of the packet\r
+\r
+ @retval EFI_DEVICE_ERROR - Failed to locate a usable SNP protocol\r
+ @retval EFI_TIMEOUT - Timeout happened to send the packet.\r
+ @retval EFI_SUCCESS - Packet is sent.\r
+ \r
+**/\r
+EFI_STATUS\r
+SyslogSendPacket (\r
+ IN CHAR8 *Packet,\r
+ IN UINT32 Length\r
+ )\r
+{\r
+ EFI_SIMPLE_NETWORK_PROTOCOL *Snp;\r
+ ETHER_HEAD *Ether;\r
+ EFI_STATUS Status;\r
+ EFI_EVENT TimeoutEvent;\r
+ UINT8 *TxBuf;\r
+\r
+ Snp = SyslogLocateSnp ();\r
+\r
+ if (Snp == NULL) {\r
+ return EFI_DEVICE_ERROR;\r
+ }\r
+\r
+ Ether = (ETHER_HEAD *) Packet;\r
+ CopyMem (Ether->SrcMac, Snp->Mode->CurrentAddress.Addr, NET_ETHER_ADDR_LEN);\r
+\r
+ //\r
+ // Start the timeout event.\r
+ //\r
+ Status = gBS->CreateEvent (\r
+ EVT_TIMER,\r
+ TPL_NOTIFY,\r
+ NULL,\r
+ NULL,\r
+ &TimeoutEvent\r
+ );\r
+\r
+ if (EFI_ERROR (Status)) {\r
+ return Status;\r
+ }\r
+\r
+ Status = gBS->SetTimer (TimeoutEvent, TimerRelative, NET_SYSLOG_TX_TIMEOUT);\r
+\r
+ if (EFI_ERROR (Status)) {\r
+ goto ON_EXIT;\r
+ }\r
+\r
+ for (;;) {\r
+ //\r
+ // Transmit the packet through SNP.\r
+ //\r
+ Status = Snp->Transmit (Snp, 0, Length, Packet, NULL, NULL, NULL);\r
+\r
+ if ((Status != EFI_SUCCESS) && (Status != EFI_NOT_READY)) {\r
+ Status = EFI_DEVICE_ERROR;\r
+ break;\r
+ }\r
+ \r
+ //\r
+ // If Status is EFI_SUCCESS, the packet is put in the transmit queue.\r
+ // if Status is EFI_NOT_READY, the transmit engine of the network\r
+ // interface is busy. Both need to sync SNP.\r
+ //\r
+ TxBuf = NULL;\r
+\r
+ do {\r
+ //\r
+ // Get the recycled transmit buffer status.\r
+ //\r
+ Snp->GetStatus (Snp, NULL, (VOID **) &TxBuf);\r
+\r
+ if (!EFI_ERROR (gBS->CheckEvent (TimeoutEvent))) {\r
+ Status = EFI_TIMEOUT;\r
+ break;\r
+ }\r
+\r
+ } while (TxBuf == NULL);\r
+\r
+ if ((Status == EFI_SUCCESS) || (Status == EFI_TIMEOUT)) {\r
+ break;\r
+ }\r
+ \r
+ //\r
+ // Status is EFI_NOT_READY. Restart the timer event and\r
+ // call Snp->Transmit again.\r
+ //\r
+ gBS->SetTimer (TimeoutEvent, TimerRelative, NET_SYSLOG_TX_TIMEOUT);\r
+ }\r
+\r
+ gBS->SetTimer (TimeoutEvent, TimerCancel, 0);\r
+\r
+ON_EXIT:\r
+ gBS->CloseEvent (TimeoutEvent);\r
+ return Status;\r
+}\r
+\r
+/**\r
+ Build a syslog packet, including the Ethernet/Ip/Udp headers \r
+ and user's message. \r
+ \r
+ @param[in] Level - Syslog servity level\r
+ @param[in] Module - The module that generates the log\r
+ @param[in] File - The file that contains the current log\r
+ @param[in] Line - The line of code in the File that contains the current log\r
+ @param[in] Message - The log message\r
+ @param[in] BufLen - The lenght of the Buf\r
+ @param[out] Buf - The buffer to put the packet data\r
+\r
+Returns:\r
+\r
+ The length of the syslog packet built.\r
+\r
+**/\r
+UINT32\r
+SyslogBuildPacket (\r
+ IN UINT32 Level,\r
+ IN UINT8 *Module,\r
+ IN UINT8 *File,\r
+ IN UINT32 Line,\r
+ IN UINT8 *Message,\r
+ IN UINT32 BufLen,\r
+ OUT CHAR8 *Buf \r
+ )\r
+{\r
+ ETHER_HEAD *Ether;\r
+ IP4_HEAD *Ip4;\r
+ EFI_UDP_HEADER *Udp4;\r
+ EFI_TIME Time;\r
+ UINT32 Pri;\r
+ UINT32 Len;\r
+\r
+ //\r
+ // Fill in the Ethernet header. Leave alone the source MAC. \r
+ // SyslogSendPacket will fill in the address for us.\r
+ //\r
+ Ether = (ETHER_HEAD *) Buf;\r
+ CopyMem (Ether->DstMac, mSyslogDstMac, NET_ETHER_ADDR_LEN);\r
+ ZeroMem (Ether->SrcMac, NET_ETHER_ADDR_LEN);\r
+\r
+ Ether->EtherType = HTONS (0x0800); // IPv4 protocol\r
+\r
+ Buf += sizeof (ETHER_HEAD);\r
+ BufLen -= sizeof (ETHER_HEAD);\r
+\r
+ //\r
+ // Fill in the IP header\r
+ //\r
+ Ip4 = (IP4_HEAD *) Buf;\r
+ Ip4->HeadLen = 5;\r
+ Ip4->Ver = 4;\r
+ Ip4->Tos = 0;\r
+ Ip4->TotalLen = 0;\r
+ Ip4->Id = (UINT16) mSyslogPacketSeq;\r
+ Ip4->Fragment = 0;\r
+ Ip4->Ttl = 16;\r
+ Ip4->Protocol = 0x11;\r
+ Ip4->Checksum = 0;\r
+ Ip4->Src = mSyslogSrcIp;\r
+ Ip4->Dst = mSyslogDstIp;\r
+\r
+ Buf += sizeof (IP4_HEAD);\r
+ BufLen -= sizeof (IP4_HEAD);\r
+\r
+ //\r
+ // Fill in the UDP header, Udp checksum is optional. Leave it zero.\r
+ //\r
+ Udp4 = (EFI_UDP_HEADER *) Buf;\r
+ Udp4->SrcPort = HTONS (514);\r
+ Udp4->DstPort = HTONS (514);\r
+ Udp4->Length = 0;\r
+ Udp4->Checksum = 0;\r
+\r
+ Buf += sizeof (EFI_UDP_HEADER);\r
+ BufLen -= sizeof (EFI_UDP_HEADER);\r
+\r
+ //\r
+ // Build the syslog message body with <PRI> Timestamp machine module Message\r
+ //\r
+ Pri = ((NET_SYSLOG_FACILITY & 31) << 3) | (Level & 7);\r
+ gRT->GetTime (&Time, NULL);\r
+\r
+ //\r
+ // Use %a to format the ASCII strings, %s to format UNICODE strings\r
+ //\r
+ Len = 0;\r
+ Len += (UINT32) AsciiSPrint (\r
+ Buf,\r
+ BufLen,\r
+ "<%d> %a %d %d:%d:%d ",\r
+ Pri,\r
+ mMonthName [Time.Month-1], \r
+ Time.Day,\r
+ Time.Hour,\r
+ Time.Minute,\r
+ Time.Second\r
+ );\r
+ Len--;\r
+\r
+ Len += (UINT32) AsciiSPrint (\r
+ Buf + Len, \r
+ BufLen - Len, \r
+ "Tiano %a: %a (Line: %d File: %a)", \r
+ Module,\r
+ Message,\r
+ Line,\r
+ File\r
+ );\r
+ Len--;\r
+\r
+ //\r
+ // OK, patch the IP length/checksum and UDP length fields.\r
+ //\r
+ Len += sizeof (EFI_UDP_HEADER);\r
+ Udp4->Length = HTONS ((UINT16) Len);\r
+\r
+ Len += sizeof (IP4_HEAD);\r
+ Ip4->TotalLen = HTONS ((UINT16) Len);\r
+ Ip4->Checksum = (UINT16) (~NetblockChecksum ((UINT8 *) Ip4, sizeof (IP4_HEAD)));\r
+\r
+ return Len + sizeof (ETHER_HEAD);\r
+}\r
+\r
+/**\r
+ Allocate a buffer, then format the message to it. This is a \r
+ help function for the NET_DEBUG_XXX macros. The PrintArg of \r
+ these macros treats the variable length print parameters as a \r
+ single parameter, and pass it to the NetDebugASPrint. For\r
+ example, NET_DEBUG_TRACE ("Tcp", ("State transit to %a\n", Name))\r
+ if extracted to: \r
+ \r
+ NetDebugOutput (\r
+ NETDEBUG_LEVEL_TRACE, \r
+ "Tcp", \r
+ __FILE__,\r
+ __LINE__,\r
+ NetDebugASPrint ("State transit to %a\n", Name) \r
+ ) \r
+ \r
+ @param Format The ASCII format string.\r
+ @param ... The variable length parameter whose format is determined \r
+ by the Format string.\r
+\r
+ @return The buffer containing the formatted message,\r
+ or NULL if failed to allocate memory.\r
+\r
+**/\r
+CHAR8 *\r
+NetDebugASPrint (\r
+ IN CHAR8 *Format,\r
+ ...\r
+ )\r
+{\r
+ VA_LIST Marker;\r
+ CHAR8 *Buf;\r
+\r
+ Buf = (CHAR8 *) AllocatePool (NET_DEBUG_MSG_LEN);\r
+\r
+ if (Buf == NULL) {\r
+ return NULL;\r
+ }\r
+\r
+ VA_START (Marker, Format);\r
+ AsciiVSPrint (Buf, NET_DEBUG_MSG_LEN, Format, Marker);\r
+ VA_END (Marker);\r
+\r
+ return Buf;\r
+}\r
+\r
+/**\r
+ Builds an UDP4 syslog packet and send it using SNP.\r
+\r
+ This function will locate a instance of SNP then send the message through it.\r
+ Because it isn't open the SNP BY_DRIVER, apply caution when using it.\r
+\r
+ @param Level The servity level of the message.\r
+ @param Module The Moudle that generates the log.\r
+ @param File The file that contains the log.\r
+ @param Line The exact line that contains the log.\r
+ @param Message The user message to log.\r
+\r
+ @retval EFI_INVALID_PARAMETER Any input parameter is invalid.\r
+ @retval EFI_OUT_OF_RESOURCES Failed to allocate memory for the packet\r
+ @retval EFI_SUCCESS The log is discard because that it is more verbose \r
+ than the mNetDebugLevelMax. Or, it has been sent out.\r
+**/ \r
+EFI_STATUS\r
+NetDebugOutput (\r
+ IN UINT32 Level, \r
+ IN UINT8 *Module,\r
+ IN UINT8 *File,\r
+ IN UINT32 Line,\r
+ IN UINT8 *Message\r
+ )\r
+{\r
+ CHAR8 *Packet;\r
+ UINT32 Len;\r
+ EFI_STATUS Status;\r
+\r
+ //\r
+ // Check whether the message should be sent out\r
+ //\r
+ if (Message == NULL) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
+ if (Level > mNetDebugLevelMax) {\r
+ Status = EFI_SUCCESS;\r
+ goto ON_EXIT;\r
+ }\r
+ \r
+ //\r
+ // Allocate a maxium of 1024 bytes, the caller should ensure\r
+ // that the message plus the ethernet/ip/udp header is shorter\r
+ // than this\r
+ //\r
+ Packet = (CHAR8 *) AllocatePool (NET_SYSLOG_PACKET_LEN);\r
+\r
+ if (Packet == NULL) {\r
+ Status = EFI_OUT_OF_RESOURCES;\r
+ goto ON_EXIT;\r
+ }\r
+ \r
+ //\r
+ // Build the message: Ethernet header + IP header + Udp Header + user data\r
+ //\r
+ Len = SyslogBuildPacket (\r
+ Level,\r
+ Module,\r
+ File,\r
+ Line,\r
+ Message,\r
+ NET_SYSLOG_PACKET_LEN,\r
+ Packet\r
+ );\r
+\r
+ mSyslogPacketSeq++;\r
+ Status = SyslogSendPacket (Packet, Len);\r
+ FreePool (Packet);\r
+\r
+ON_EXIT:\r
+ FreePool (Message);\r
+ return Status;\r
+}\r
+/**\r
+ Return the length of the mask. \r
+ \r
+ Return the length of the mask, the correct value is from 0 to 32.\r
+ If the mask is invalid, return the invalid length 33, which is IP4_MASK_NUM.\r
NetMask is in the host byte order.\r
\r
@param[in] NetMask The netmask to get the length from.\r
\r
- @return The length of the netmask, IP4_MASK_NUM if the mask isn't.\r
+ @return The length of the netmask, IP4_MASK_NUM if the mask is invalid.\r
\r
**/\r
INTN\r
\r
\r
/**\r
- Return the class of the address, such as class a, b, c.\r
+ Return the class of the IP address, such as class A, B, C.\r
Addr is in host byte order.\r
+ \r
+ The address of class A starts with 0.\r
+ If the address belong to class A, return IP4_ADDR_CLASSA.\r
+ The address of class B starts with 10. \r
+ If the address belong to class B, return IP4_ADDR_CLASSB.\r
+ The address of class C starts with 110. \r
+ If the address belong to class C, return IP4_ADDR_CLASSC.\r
+ The address of class D starts with 1110. \r
+ If the address belong to class D, return IP4_ADDR_CLASSD.\r
+ The address of class E starts with 1111.\r
+ If the address belong to class E, return IP4_ADDR_CLASSE.\r
\r
+ \r
@param[in] Addr The address to get the class from.\r
\r
@return IP address class, such as IP4_ADDR_CLASSA.\r
\r
/**\r
Check whether the IP is a valid unicast address according to\r
- the netmask. If NetMask is zero, use the IP address's class to\r
- get the default mask.\r
+ the netmask. If NetMask is zero, use the IP address's class to get the default mask.\r
+ \r
+ If Ip is 0, IP is not a valid unicast address.\r
+ Class D address is used for multicasting and class E address is reserved for future. If Ip\r
+ belongs to class D or class E, IP is not a valid unicast address. \r
+ If all bits of the host address of IP are 0 or 1, IP is also not a valid unicast address.\r
\r
@param[in] Ip The IP to check against.\r
@param[in] NetMask The mask of the IP.\r
**/\r
BOOLEAN\r
EFIAPI\r
-Ip4IsUnicast (\r
+NetIp4IsUnicast (\r
IN IP4_ADDR Ip,\r
IN IP4_ADDR NetMask\r
)\r
return TRUE;\r
}\r
\r
+/**\r
+ Check whether the incoming IPv6 address is a valid unicast address.\r
+\r
+ If the address is a multicast address has binary 0xFF at the start, it is not\r
+ a valid unicast address. If the address is unspecified ::, it is not a valid\r
+ unicast address to be assigned to any node. If the address is loopback address\r
+ ::1, it is also not a valid unicast address to be assigned to any physical\r
+ interface. \r
+\r
+ @param[in] Ip6 The IPv6 address to check against.\r
+\r
+ @return TRUE if Ip6 is a valid unicast address on the network, otherwise FALSE.\r
+\r
+**/ \r
+BOOLEAN\r
+NetIp6IsValidUnicast (\r
+ IN EFI_IPv6_ADDRESS *Ip6\r
+ ) \r
+{\r
+ UINT8 Byte;\r
+ UINT8 Index;\r
+ \r
+ if (Ip6->Addr[0] == 0xFF) {\r
+ return FALSE;\r
+ }\r
+\r
+ for (Index = 0; Index < 15; Index++) {\r
+ if (Ip6->Addr[Index] != 0) {\r
+ return TRUE;\r
+ }\r
+ }\r
+\r
+ Byte = Ip6->Addr[Index];\r
+\r
+ if (Byte == 0x0 || Byte == 0x1) {\r
+ return FALSE;\r
+ }\r
+\r
+ return TRUE; \r
+}\r
\r
/**\r
- Initialize a random seed using current time.\r
+ Check whether the incoming Ipv6 address is the unspecified address or not.\r
+\r
+ @param[in] Ip6 - Ip6 address, in network order.\r
+\r
+ @retval TRUE - Yes, unspecified\r
+ @retval FALSE - No\r
+ \r
+**/\r
+BOOLEAN\r
+NetIp6IsUnspecifiedAddr (\r
+ IN EFI_IPv6_ADDRESS *Ip6\r
+ )\r
+{\r
+ UINT8 Index;\r
+\r
+ for (Index = 0; Index < 16; Index++) {\r
+ if (Ip6->Addr[Index] != 0) {\r
+ return FALSE;\r
+ }\r
+ }\r
+\r
+ return TRUE;\r
+}\r
+\r
+/**\r
+ Check whether the incoming Ipv6 address is a link-local address.\r
+\r
+ @param[in] Ip6 - Ip6 address, in network order.\r
+\r
+ @retval TRUE - Yes, link-local address\r
+ @retval FALSE - No\r
+ \r
+**/\r
+BOOLEAN\r
+NetIp6IsLinkLocalAddr (\r
+ IN EFI_IPv6_ADDRESS *Ip6\r
+ )\r
+{\r
+ UINT8 Index;\r
+ \r
+ ASSERT (Ip6 != NULL);\r
+\r
+ if (Ip6->Addr[0] != 0xFE) {\r
+ return FALSE;\r
+ }\r
+ \r
+ if (Ip6->Addr[1] != 0x80) {\r
+ return FALSE;\r
+ }\r
+\r
+ for (Index = 2; Index < 8; Index++) {\r
+ if (Ip6->Addr[Index] != 0) {\r
+ return FALSE;\r
+ }\r
+ }\r
+\r
+ return TRUE;\r
+}\r
+\r
+/**\r
+ Check whether the Ipv6 address1 and address2 are on the connected network.\r
+\r
+ @param[in] Ip1 - Ip6 address1, in network order.\r
+ @param[in] Ip2 - Ip6 address2, in network order.\r
+ @param[in] PrefixLength - The prefix length of the checking net.\r
+\r
+ @retval TRUE - Yes, connected.\r
+ @retval FALSE - No.\r
+ \r
+**/\r
+BOOLEAN\r
+NetIp6IsNetEqual (\r
+ EFI_IPv6_ADDRESS *Ip1,\r
+ EFI_IPv6_ADDRESS *Ip2,\r
+ UINT8 PrefixLength\r
+ )\r
+{\r
+ UINT8 Byte;\r
+ UINT8 Bit;\r
+ UINT8 Mask;\r
+\r
+ ASSERT (Ip1 != NULL && Ip2 != NULL);\r
+ \r
+ if (PrefixLength == 0) {\r
+ return TRUE;\r
+ }\r
+\r
+ Byte = (UINT8) (PrefixLength / 8);\r
+ Bit = (UINT8) (PrefixLength % 8);\r
+ \r
+ if (CompareMem (Ip1, Ip2, Byte) != 0) {\r
+ return FALSE;\r
+ }\r
+\r
+ if (Bit > 0) {\r
+ Mask = (UINT8) (0xFF << (8 - Bit));\r
+\r
+ if ((Ip1->Addr[Byte] & Mask) != (Ip2->Addr[Byte] & Mask)) {\r
+ return FALSE;\r
+ } \r
+ }\r
+ \r
+ return TRUE;\r
+}\r
+\r
+\r
+/**\r
+ Switches the endianess of an IPv6 address\r
\r
+ This function swaps the bytes in a 128-bit IPv6 address to switch the value\r
+ from little endian to big endian or vice versa. The byte swapped value is\r
+ returned.\r
+\r
+ @param Ip6 Points to an IPv6 address\r
+\r
+ @return The byte swapped IPv6 address.\r
+\r
+**/\r
+EFI_IPv6_ADDRESS *\r
+Ip6Swap128 (\r
+ EFI_IPv6_ADDRESS *Ip6\r
+ )\r
+{\r
+ UINT64 High;\r
+ UINT64 Low;\r
+\r
+ CopyMem (&High, Ip6, sizeof (UINT64));\r
+ CopyMem (&Low, &Ip6->Addr[8], sizeof (UINT64));\r
+\r
+ High = SwapBytes64 (High);\r
+ Low = SwapBytes64 (Low);\r
+\r
+ CopyMem (Ip6, &Low, sizeof (UINT64));\r
+ CopyMem (&Ip6->Addr[8], &High, sizeof (UINT64));\r
+\r
+ return Ip6;\r
+}\r
+\r
+/**\r
+ Initialize a random seed using current time.\r
+ \r
+ Get current time first. Then initialize a random seed based on some basic \r
+ mathematics operation on the hour, day, minute, second, nanosecond and year \r
+ of the current time.\r
+ \r
@return The random seed initialized with current time.\r
\r
**/\r
\r
\r
/**\r
- Extract a UINT32 from a byte stream, then convert it to host\r
- byte order. Use this function to avoid alignment error.\r
+ Extract a UINT32 from a byte stream.\r
+ \r
+ Copy a UINT32 from a byte stream, then converts it from Network \r
+ byte order to host byte order. Use this function to avoid alignment error.\r
\r
@param[in] Buf The buffer to extract the UINT32.\r
\r
\r
\r
/**\r
- Put a UINT32 to the byte stream. Convert it from host byte order\r
- to network byte order before putting.\r
+ Put a UINT32 to the byte stream in network byte order. \r
+ \r
+ Converts a UINT32 from host byte order to network byte order. Then copy it to the \r
+ byte stream.\r
\r
@param[in, out] Buf The buffer to put the UINT32.\r
@param[in] Data The data to put.\r
\r
\r
/**\r
- Remove the first entry on the list.\r
+ Remove the first node entry on the list, and return the removed node entry.\r
+ \r
+ Removes the first node Entry from a doubly linked list. It is up to the caller of\r
+ this function to release the memory used by the first node if that is required. On\r
+ exit, the removed node is returned. \r
+\r
+ If Head is NULL, then ASSERT().\r
+ If Head was not initialized, then ASSERT().\r
+ If PcdMaximumLinkedListLength is not zero, and the number of nodes in the\r
+ linked list including the head node is greater than or equal to PcdMaximumLinkedListLength,\r
+ then ASSERT(). \r
\r
@param[in, out] Head The list header.\r
\r
- @return The entry that is removed from the list, NULL if the list is empty.\r
+ @return The first node entry that is removed from the list, NULL if the list is empty.\r
\r
**/\r
LIST_ENTRY *\r
\r
\r
/**\r
- Remove the last entry on the list.\r
+ Remove the last node entry on the list and and return the removed node entry.\r
+\r
+ Removes the last node entry from a doubly linked list. It is up to the caller of\r
+ this function to release the memory used by the first node if that is required. On\r
+ exit, the removed node is returned. \r
\r
+ If Head is NULL, then ASSERT().\r
+ If Head was not initialized, then ASSERT().\r
+ If PcdMaximumLinkedListLength is not zero, and the number of nodes in the\r
+ linked list including the head node is greater than or equal to PcdMaximumLinkedListLength,\r
+ then ASSERT(). \r
+ \r
@param[in, out] Head The list head.\r
\r
- @return The entry that is removed from the list, NULL if the list is empty.\r
+ @return The last node entry that is removed from the list, NULL if the list is empty.\r
\r
**/\r
LIST_ENTRY *\r
\r
\r
/**\r
- Insert the NewEntry after the PrevEntry.\r
-\r
+ Insert a new node entry after a designated node entry of a doubly linked list.\r
+ \r
+ Inserts a new node entry donated by NewEntry after the node entry donated by PrevEntry\r
+ of the doubly linked list.\r
+ \r
@param[in, out] PrevEntry The previous entry to insert after.\r
@param[in, out] NewEntry The new entry to insert.\r
\r
\r
\r
/**\r
- Insert the NewEntry before the PostEntry.\r
-\r
+ Insert a new node entry before a designated node entry of a doubly linked list.\r
+ \r
+ Inserts a new node entry donated by NewEntry after the node entry donated by PostEntry\r
+ of the doubly linked list.\r
+ \r
@param[in, out] PostEntry The entry to insert before.\r
@param[in, out] NewEntry The new entry to insert.\r
\r
\r
/**\r
Initialize the netmap. Netmap is a reposity to keep the <Key, Value> pairs.\r
-\r
+ \r
+ Initialize the forward and backward links of two head nodes donated by Map->Used \r
+ and Map->Recycled of two doubly linked lists.\r
+ Initializes the count of the <Key, Value> pairs in the netmap to zero.\r
+ \r
+ If Map is NULL, then ASSERT().\r
+ If the address of Map->Used is NULL, then ASSERT().\r
+ If the address of Map->Recycled is NULl, then ASSERT().\r
+ \r
@param[in, out] Map The netmap to initialize.\r
\r
**/\r
\r
/**\r
To clean up the netmap, that is, release allocated memories.\r
-\r
+ \r
+ Removes all nodes of the Used doubly linked list and free memory of all related netmap items.\r
+ Removes all nodes of the Recycled doubly linked list and free memory of all related netmap items.\r
+ The number of the <Key, Value> pairs in the netmap is set to be zero.\r
+ \r
+ If Map is NULL, then ASSERT().\r
+ \r
@param[in, out] Map The netmap to clean up.\r
\r
**/\r
\r
\r
/**\r
- Test whether the netmap is empty.\r
-\r
+ Test whether the netmap is empty and return true if it is.\r
+ \r
+ If the number of the <Key, Value> pairs in the netmap is zero, return TRUE.\r
+ \r
+ If Map is NULL, then ASSERT().\r
+ \r
+ \r
@param[in] Map The net map to test.\r
\r
@return TRUE if the netmap is empty, otherwise FALSE.\r
\r
\r
/**\r
- Allocate an item for the netmap. It will try to allocate.\r
- a batch of items and return one.\r
-\r
+ Return one allocated item. \r
+ \r
+ If the Recycled doubly linked list of the netmap is empty, it will try to allocate \r
+ a batch of items if there are enough resources and add corresponding nodes to the begining\r
+ of the Recycled doubly linked list of the netmap. Otherwise, it will directly remove\r
+ the fist node entry of the Recycled doubly linked list and return the corresponding item.\r
+ \r
+ If Map is NULL, then ASSERT().\r
+ \r
@param[in, out] Map The netmap to allocate item for.\r
\r
@return The allocated item. If NULL, the\r
\r
/**\r
Allocate an item to save the <Key, Value> pair to the head of the netmap.\r
+ \r
+ Allocate an item to save the <Key, Value> pair and add corresponding node entry\r
+ to the beginning of the Used doubly linked list. The number of the <Key, Value> \r
+ pairs in the netmap increase by 1.\r
\r
+ If Map is NULL, then ASSERT().\r
+ \r
@param[in, out] Map The netmap to insert into.\r
@param[in] Key The user's key.\r
@param[in] Value The user's value for the key.\r
/**\r
Allocate an item to save the <Key, Value> pair to the tail of the netmap.\r
\r
+ Allocate an item to save the <Key, Value> pair and add corresponding node entry\r
+ to the tail of the Used doubly linked list. The number of the <Key, Value> \r
+ pairs in the netmap increase by 1.\r
+\r
+ If Map is NULL, then ASSERT().\r
+ \r
@param[in, out] Map The netmap to insert into.\r
@param[in] Key The user's key.\r
@param[in] Value The user's value for the key.\r
\r
\r
/**\r
- Check whther the item is in the Map.\r
+ Check whether the item is in the Map and return TRUE if it is.\r
\r
@param[in] Map The netmap to search within.\r
@param[in] Item The item to search.\r
\r
\r
/**\r
- Find the key in the netmap.\r
+ Find the key in the netmap and returns the point to the item contains the Key.\r
+ \r
+ Iterate the Used doubly linked list of the netmap to get every item. Compare the key of every \r
+ item with the key to search. It returns the point to the item contains the Key if found.\r
\r
+ If Map is NULL, then ASSERT().\r
+ \r
@param[in] Map The netmap to search within.\r
@param[in] Key The key to search.\r
\r
\r
\r
/**\r
- Remove the item from the netmap.\r
-\r
+ Remove the node entry of the item from the netmap and return the key of the removed item.\r
+ \r
+ Remove the node entry of the item from the Used doubly linked list of the netmap. \r
+ The number of the <Key, Value> pairs in the netmap decrease by 1. Then add the node \r
+ entry of the item to the Recycled doubly linked list of the netmap. If Value is not NULL,\r
+ Value will point to the value of the item. It returns the key of the removed item.\r
+ \r
+ If Map is NULL, then ASSERT().\r
+ If Item is NULL, then ASSERT().\r
+ if item in not in the netmap, then ASSERT().\r
+ \r
@param[in, out] Map The netmap to remove the item from.\r
@param[in, out] Item The item to remove.\r
@param[out] Value The variable to receive the value if not NULL.\r
\r
\r
/**\r
- Remove the first entry on the netmap.\r
+ Remove the first node entry on the netmap and return the key of the removed item.\r
\r
+ Remove the first node entry from the Used doubly linked list of the netmap. \r
+ The number of the <Key, Value> pairs in the netmap decrease by 1. Then add the node \r
+ entry to the Recycled doubly linked list of the netmap. If parameter Value is not NULL,\r
+ parameter Value will point to the value of the item. It returns the key of the removed item.\r
+ \r
+ If Map is NULL, then ASSERT().\r
+ If the Used doubly linked list is empty, then ASSERT().\r
+ \r
@param[in, out] Map The netmap to remove the head from.\r
@param[out] Value The variable to receive the value if not NULL.\r
\r
\r
\r
/**\r
- Remove the last entry on the netmap.\r
+ Remove the last node entry on the netmap and return the key of the removed item.\r
\r
+ Remove the last node entry from the Used doubly linked list of the netmap. \r
+ The number of the <Key, Value> pairs in the netmap decrease by 1. Then add the node \r
+ entry to the Recycled doubly linked list of the netmap. If parameter Value is not NULL,\r
+ parameter Value will point to the value of the item. It returns the key of the removed item.\r
+ \r
+ If Map is NULL, then ASSERT().\r
+ If the Used doubly linked list is empty, then ASSERT().\r
+ \r
@param[in, out] Map The netmap to remove the tail from.\r
@param[out] Value The variable to receive the value if not NULL.\r
\r
\r
\r
/**\r
- Iterate through the netmap and call CallBack for each item. It will\r
- contiue the traverse if CallBack returns EFI_SUCCESS, otherwise, break\r
- from the loop. It returns the CallBack's last return value. This\r
- function is delete safe for the current item.\r
+ Iterate through the netmap and call CallBack for each item.\r
+ \r
+ It will contiue the traverse if CallBack returns EFI_SUCCESS, otherwise, break\r
+ from the loop. It returns the CallBack's last return value. This function is \r
+ delete safe for the current item.\r
\r
+ If Map is NULL, then ASSERT().\r
+ If CallBack is NULL, then ASSERT().\r
+ \r
@param[in] Map The Map to iterate through.\r
@param[in] CallBack The callback function to call for each item.\r
@param[in] Arg The opaque parameter to the callback.\r
LIST_ENTRY *Entry;\r
LIST_ENTRY *Next;\r
LIST_ENTRY *Head;\r
- NET_MAP_ITEM *Item;\r
- EFI_STATUS Result;\r
+ NET_MAP_ITEM *Item;\r
+ EFI_STATUS Result;\r
\r
ASSERT ((Map != NULL) && (CallBack != NULL));\r
\r
/**\r
This is the default unload handle for all the network drivers.\r
\r
+ Disconnect the driver specified by ImageHandle from all the devices in the handle database.\r
+ Uninstall all the protocols installed in the driver entry point.\r
+ \r
@param[in] ImageHandle The drivers' driver image.\r
\r
@retval EFI_SUCCESS The image is unloaded.\r
\r
/**\r
Create a child of the service that is identified by ServiceBindingGuid.\r
+ \r
+ Get the ServiceBinding Protocol first, then use it to create a child.\r
\r
+ If ServiceBindingGuid is NULL, then ASSERT().\r
+ If ChildHandle is NULL, then ASSERT().\r
+ \r
@param[in] Controller The controller which has the service installed.\r
@param[in] Image The image handle used to open service.\r
@param[in] ServiceBindingGuid The service's Guid.\r
- @param[in, out] ChildHandle The handle to receive the create child\r
+ @param[in, out] ChildHandle The handle to receive the create child.\r
\r
@retval EFI_SUCCESS The child is successfully created.\r
@retval Others Failed to create the child.\r
\r
/**\r
Destory a child of the service that is identified by ServiceBindingGuid.\r
-\r
+ \r
+ Get the ServiceBinding Protocol first, then use it to destroy a child.\r
+ \r
+ If ServiceBindingGuid is NULL, then ASSERT().\r
+ \r
@param[in] Controller The controller which has the service installed.\r
@param[in] Image The image handle used to open service.\r
@param[in] ServiceBindingGuid The service's Guid.\r
- @param[in] ChildHandle The child to destory\r
+ @param[in] ChildHandle The child to destory.\r
\r
@retval EFI_SUCCESS The child is successfully destoried.\r
@retval Others Failed to destory the child.\r
SnpHandle to a unicode string. Callers are responsible for freeing the\r
string storage.\r
\r
+ Get the mac address of the Simple Network protocol from the SnpHandle. Then convert\r
+ the mac address into a unicode string. It takes 2 unicode characters to represent \r
+ a 1 byte binary buffer. Plus one unicode character for the null-terminator.\r
+\r
+\r
@param[in] SnpHandle The handle where the simple network protocol is\r
installed on.\r
@param[in] ImageHandle The image handle used to act as the agent handle to\r
Check the default address used by the IPv4 driver is static or dynamic (acquired\r
from DHCP).\r
\r
+ If the controller handle does not have the NIC Ip4 Config Protocol installed, the \r
+ default address is static. If the EFI variable to save the configuration is not found,\r
+ the default address is static. Otherwise, get the result from the EFI variable which \r
+ saving the configuration.\r
+ \r
@param[in] Controller The controller handle which has the NIC Ip4 Config Protocol\r
relative with the default address to judge.\r
\r
IN EFI_HANDLE Controller\r
)\r
{\r
- EFI_STATUS Status;\r
- EFI_NIC_IP4_CONFIG_PROTOCOL *NicIp4;\r
- UINTN Len;\r
- NIC_IP4_CONFIG_INFO *ConfigInfo;\r
- BOOLEAN IsStatic;\r
-\r
- Status = gBS->HandleProtocol (\r
- Controller,\r
- &gEfiNicIp4ConfigProtocolGuid,\r
- (VOID **) &NicIp4\r
- );\r
+ EFI_STATUS Status;\r
+ EFI_HII_CONFIG_ROUTING_PROTOCOL *HiiConfigRouting;\r
+ UINTN Len;\r
+ NIC_IP4_CONFIG_INFO *ConfigInfo;\r
+ BOOLEAN IsStatic;\r
+ EFI_STRING ConfigHdr;\r
+ EFI_STRING ConfigResp;\r
+ EFI_STRING AccessProgress;\r
+ EFI_STRING AccessResults;\r
+ EFI_STRING String;\r
+\r
+ ConfigInfo = NULL;\r
+ ConfigHdr = NULL;\r
+ ConfigResp = NULL;\r
+ AccessProgress = NULL;\r
+ AccessResults = NULL;\r
+ IsStatic = TRUE;\r
+\r
+ Status = gBS->LocateProtocol (\r
+ &gEfiHiiConfigRoutingProtocolGuid,\r
+ NULL,\r
+ (VOID **) &HiiConfigRouting\r
+ );\r
if (EFI_ERROR (Status)) {\r
return TRUE;\r
}\r
\r
- Len = 0;\r
- Status = NicIp4->GetInfo (NicIp4, &Len, NULL);\r
- if (Status != EFI_BUFFER_TOO_SMALL) {\r
+ //\r
+ // Construct config request string header\r
+ //\r
+ ConfigHdr = HiiConstructConfigHdr (&gEfiNicIp4ConfigVariableGuid, EFI_NIC_IP4_CONFIG_VARIABLE, Controller);\r
+ if (ConfigHdr == NULL) {\r
return TRUE;\r
}\r
+ \r
+ Len = StrLen (ConfigHdr);\r
+ ConfigResp = AllocateZeroPool ((Len + NIC_ITEM_CONFIG_SIZE * 2 + 100) * sizeof (CHAR16));\r
+ if (ConfigResp == NULL) {\r
+ goto ON_EXIT;\r
+ }\r
+ StrCpy (ConfigResp, ConfigHdr);\r
+\r
+ String = ConfigResp + Len;\r
+ UnicodeSPrint (\r
+ String, \r
+ (8 + 4 + 7 + 4 + 1) * sizeof (CHAR16), \r
+ L"&OFFSET=%04X&WIDTH=%04X", \r
+ OFFSET_OF (NIC_IP4_CONFIG_INFO, Source), \r
+ sizeof (UINT32)\r
+ );\r
+\r
+ Status = HiiConfigRouting->ExtractConfig (\r
+ HiiConfigRouting,\r
+ ConfigResp,\r
+ &AccessProgress,\r
+ &AccessResults\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ goto ON_EXIT;\r
+ }\r
\r
- ConfigInfo = AllocatePool (Len);\r
+ ConfigInfo = AllocateZeroPool (sizeof (NIC_ITEM_CONFIG_SIZE));\r
if (ConfigInfo == NULL) {\r
- return TRUE;\r
+ goto ON_EXIT;\r
}\r
\r
- IsStatic = TRUE;\r
- Status = NicIp4->GetInfo (NicIp4, &Len, ConfigInfo);\r
+ ConfigInfo->Source = IP4_CONFIG_SOURCE_STATIC;\r
+ Len = NIC_ITEM_CONFIG_SIZE;\r
+ Status = HiiConfigRouting->ConfigToBlock (\r
+ HiiConfigRouting,\r
+ AccessResults,\r
+ (UINT8 *) ConfigInfo,\r
+ &Len,\r
+ &AccessProgress\r
+ );\r
if (EFI_ERROR (Status)) {\r
goto ON_EXIT;\r
}\r
\r
IsStatic = (BOOLEAN) (ConfigInfo->Source == IP4_CONFIG_SOURCE_STATIC);\r
-\r
+ \r
ON_EXIT:\r
\r
- gBS->FreePool (ConfigInfo);\r
+ if (AccessResults != NULL) {\r
+ FreePool (AccessResults);\r
+ }\r
+ if (ConfigInfo != NULL) {\r
+ FreePool (ConfigInfo);\r
+ }\r
+ if (ConfigResp != NULL) {\r
+ FreePool (ConfigResp);\r
+ }\r
+ if (ConfigHdr != NULL) {\r
+ FreePool (ConfigHdr);\r
+ }\r
\r
return IsStatic;\r
}\r
\r
/**\r
Create an IPv4 device path node.\r
+ \r
+ The header type of IPv4 device path node is MESSAGING_DEVICE_PATH.\r
+ The header subtype of IPv4 device path node is MSG_IPv4_DP.\r
+ The length of the IPv4 device path node in bytes is 19.\r
+ Get other info from parameters to make up the whole IPv4 device path node.\r
\r
@param[in, out] Node Pointer to the IPv4 device path node.\r
- @param[in] Controller The handle where the NIC IP4 config protocol resides.\r
+ @param[in] Controller The controller handle.\r
@param[in] LocalIp The local IPv4 address.\r
@param[in] LocalPort The local port.\r
@param[in] RemoteIp The remote IPv4 address.\r
}\r
}\r
\r
+/**\r
+ Create an IPv6 device path node.\r
+ \r
+ The header type of IPv6 device path node is MESSAGING_DEVICE_PATH.\r
+ The header subtype of IPv6 device path node is MSG_IPv6_DP.\r
+ Get other info from parameters to make up the whole IPv6 device path node.\r
+\r
+ @param[in, out] Node Pointer to the IPv6 device path node.\r
+ @param[in] Controller The controller handle.\r
+ @param[in] LocalIp The local IPv6 address.\r
+ @param[in] LocalPort The local port.\r
+ @param[in] RemoteIp The remote IPv6 address.\r
+ @param[in] RemotePort The remote port.\r
+ @param[in] Protocol The protocol type in the IP header.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+NetLibCreateIPv6DPathNode (\r
+ IN OUT IPv6_DEVICE_PATH *Node,\r
+ IN EFI_HANDLE Controller,\r
+ IN EFI_IPv6_ADDRESS *LocalIp,\r
+ IN UINT16 LocalPort,\r
+ IN EFI_IPv6_ADDRESS *RemoteIp,\r
+ IN UINT16 RemotePort,\r
+ IN UINT16 Protocol\r
+ )\r
+{\r
+ Node->Header.Type = MESSAGING_DEVICE_PATH;\r
+ Node->Header.SubType = MSG_IPv6_DP;\r
+ SetDevicePathNodeLength (&Node->Header, sizeof (IPv6_DEVICE_PATH));\r
+\r
+ CopyMem (&Node->LocalIpAddress, LocalIp, sizeof (EFI_IPv6_ADDRESS));\r
+ CopyMem (&Node->RemoteIpAddress, RemoteIp, sizeof (EFI_IPv6_ADDRESS));\r
+\r
+ Node->LocalPort = LocalPort;\r
+ Node->RemotePort = RemotePort;\r
+\r
+ Node->Protocol = Protocol;\r
+ Node->StaticIpAddress = FALSE;\r
+}\r
\r
/**\r
Find the UNDI/SNP handle from controller and protocol GUID.\r
+ \r
For example, IP will open a MNP child to transmit/receive\r
packets, when MNP is stopped, IP should also be stopped. IP\r
needs to find its own private data which is related the IP's\r
gBS->FreePool (OpenBuffer);\r
return Handle;\r
}\r
-\r
-/**\r
- Add a Deferred Procedure Call to the end of the DPC queue.\r
-\r
- @param[in] DpcTpl The EFI_TPL that the DPC should be invoked.\r
- @param[in] DpcProcedure Pointer to the DPC's function.\r
- @param[in] DpcContext Pointer to the DPC's context. Passed to DpcProcedure\r
- when DpcProcedure is invoked.\r
-\r
- @retval EFI_SUCCESS The DPC was queued.\r
- @retval EFI_INVALID_PARAMETER DpcTpl is not a valid EFI_TPL, or DpcProcedure\r
- is NULL.\r
- @retval EFI_OUT_OF_RESOURCES There are not enough resources available to\r
- add the DPC to the queue.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-NetLibQueueDpc (\r
- IN EFI_TPL DpcTpl,\r
- IN EFI_DPC_PROCEDURE DpcProcedure,\r
- IN VOID *DpcContext OPTIONAL\r
- )\r
-{\r
- return mDpc->QueueDpc (mDpc, DpcTpl, DpcProcedure, DpcContext);\r
-}\r
-\r
-/**\r
- Dispatch the queue of DPCs. ALL DPCs that have been queued with a DpcTpl\r
- value greater than or equal to the current TPL are invoked in the order that\r
- they were queued. DPCs with higher DpcTpl values are invoked before DPCs with\r
- lower DpcTpl values.\r
-\r
- @retval EFI_SUCCESS One or more DPCs were invoked.\r
- @retval EFI_NOT_FOUND No DPCs were invoked.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-NetLibDispatchDpc (\r
- VOID\r
- )\r
-{\r
- return mDpc->DispatchDpc(mDpc);\r
-}\r
-\r
-/**\r
- The constructor function caches the pointer to DPC protocol.\r
-\r
- The constructor function locates DPC protocol from protocol database.\r
- It will ASSERT() if that operation fails and it will always return EFI_SUCCESS.\r
-\r
- @param[in] ImageHandle The firmware allocated handle for the EFI image.\r
- @param[in] SystemTable A pointer to the EFI System Table.\r
-\r
- @retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-NetLibConstructor (\r
- IN EFI_HANDLE ImageHandle,\r
- IN EFI_SYSTEM_TABLE *SystemTable\r
- )\r
-{\r
- EFI_STATUS Status;\r
-\r
- Status = gBS->LocateProtocol (&gEfiDpcProtocolGuid, NULL, (VOID**) &mDpc);\r
- ASSERT_EFI_ERROR (Status);\r
- ASSERT (mDpc != NULL);\r
-\r
- return Status;\r
-}\r
projects / mirror_edk2.git / blobdiff