X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=MdeModulePkg%2FInclude%2FLibrary%2FNetLib.h;h=b9df46c50f63f73671654e246bdb37d8caf8d603;hp=c3695b539707e41e23cca39dbbed7959e9d8e72a;hb=29788f178e48fa5ffe7d3262d73c9548e9285d2d;hpb=552b252326c1110f8835fe5a43a1a3441ab3df0e diff --git a/MdeModulePkg/Include/Library/NetLib.h b/MdeModulePkg/Include/Library/NetLib.h index c3695b5397..b9df46c50f 100644 --- a/MdeModulePkg/Include/Library/NetLib.h +++ b/MdeModulePkg/Include/Library/NetLib.h @@ -1,1373 +1,2189 @@ -/** @file - This library provides basic functiosn for UEFI network stack. - -Copyright (c) 2005 - 2008, Intel Corporation -All rights reserved. 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. - -**/ - -#ifndef _NET_LIB_H_ -#define _NET_LIB_H_ - -#include -#include -#include -#include -#include -#include -#include -#include - -typedef UINT32 IP4_ADDR; -typedef UINT32 TCP_SEQNO; -typedef UINT16 TCP_PORTNO; - -enum { - NET_ETHER_ADDR_LEN = 6, - NET_IFTYPE_ETHERNET = 0x01, - - EFI_IP_PROTO_UDP = 0x11, - EFI_IP_PROTO_TCP = 0x06, - EFI_IP_PROTO_ICMP = 0x01, - - // - // The address classfication - // - IP4_ADDR_CLASSA = 1, - IP4_ADDR_CLASSB, - IP4_ADDR_CLASSC, - IP4_ADDR_CLASSD, - IP4_ADDR_CLASSE, - - IP4_MASK_NUM = 33 -}; - -#pragma pack(1) - -// -// Ethernet head definition -// -typedef struct { - UINT8 DstMac [NET_ETHER_ADDR_LEN]; - UINT8 SrcMac [NET_ETHER_ADDR_LEN]; - UINT16 EtherType; -} ETHER_HEAD; - - -// -// The EFI_IP4_HEADER is hard to use because the source and -// destination address are defined as EFI_IPv4_ADDRESS, which -// is a structure. Two structures can't be compared or masked -// directly. This is why there is an internal representation. -// -typedef struct { - UINT8 HeadLen : 4; - UINT8 Ver : 4; - UINT8 Tos; - UINT16 TotalLen; - UINT16 Id; - UINT16 Fragment; - UINT8 Ttl; - UINT8 Protocol; - UINT16 Checksum; - IP4_ADDR Src; - IP4_ADDR Dst; -} IP4_HEAD; - - -// -// ICMP head definition. ICMP message is categoried as either an error -// message or query message. Two message types have their own head format. -// -typedef struct { - UINT8 Type; - UINT8 Code; - UINT16 Checksum; -} IP4_ICMP_HEAD; - -typedef struct { - IP4_ICMP_HEAD Head; - UINT32 Fourth; // 4th filed of the head, it depends on Type. - IP4_HEAD IpHead; -} IP4_ICMP_ERROR_HEAD; - -typedef struct { - IP4_ICMP_HEAD Head; - UINT16 Id; - UINT16 Seq; -} IP4_ICMP_QUERY_HEAD; - - -// -// UDP header definition -// -typedef struct { - UINT16 SrcPort; - UINT16 DstPort; - UINT16 Length; - UINT16 Checksum; -} EFI_UDP4_HEADER; - - -// -// TCP header definition -// -typedef struct { - TCP_PORTNO SrcPort; - TCP_PORTNO DstPort; - TCP_SEQNO Seq; - TCP_SEQNO Ack; - UINT8 Res : 4; - UINT8 HeadLen : 4; - UINT8 Flag; - UINT16 Wnd; - UINT16 Checksum; - UINT16 Urg; -} TCP_HEAD; - -#pragma pack() - -#define NET_MAC_EQUAL(pMac1, pMac2, Len) \ - (CompareMem ((pMac1), (pMac2), Len) == 0) - -#define NET_MAC_IS_MULTICAST(Mac, BMac, Len) \ - (((*((UINT8 *) Mac) & 0x01) == 0x01) && (!NET_MAC_EQUAL (Mac, BMac, Len))) - -#define NTOHL(x) (UINT32)((((UINT32) (x) & 0xff) << 24) | \ - (((UINT32) (x) & 0xff00) << 8) | \ - (((UINT32) (x) & 0xff0000) >> 8) | \ - (((UINT32) (x) & 0xff000000) >> 24)) - -#define HTONL(x) NTOHL(x) - -#define NTOHS(x) (UINT16)((((UINT16) (x) & 0xff) << 8) | \ - (((UINT16) (x) & 0xff00) >> 8)) - -#define HTONS(x) NTOHS(x) - -// -// Test the IP's attribute, All the IPs are in host byte order. -// -#define IP4_IS_MULTICAST(Ip) (((Ip) & 0xF0000000) == 0xE0000000) -#define IP4_IS_LOCAL_BROADCAST(Ip) ((Ip) == 0xFFFFFFFF) -#define IP4_NET_EQUAL(Ip1, Ip2, NetMask) (((Ip1) & (NetMask)) == ((Ip2) & (NetMask))) -#define IP4_IS_VALID_NETMASK(Ip) (NetGetMaskLength (Ip) != IP4_MASK_NUM) - -// -// Convert the EFI_IP4_ADDRESS to plain UINT32 IP4 address. -// -#define EFI_IP4(EfiIpAddr) (*(IP4_ADDR *) ((EfiIpAddr).Addr)) -#define EFI_NTOHL(EfiIp) (NTOHL (EFI_IP4 ((EfiIp)))) -#define EFI_IP4_EQUAL(Ip1, Ip2) (CompareMem ((Ip1), (Ip2), sizeof (EFI_IPv4_ADDRESS)) == 0) - -/** - Return the length of the mask. If the mask is invalid, - return the invalid length 33, which is IP4_MASK_NUM. - NetMask is in the host byte order. - - @param NetMask The netmask to get the length from - - @return The length of the netmask, IP4_MASK_NUM if the mask isn't - @return supported. - -**/ -INTN -EFIAPI -NetGetMaskLength ( - IN IP4_ADDR Mask - ); - -/** - Return the class of the address, such as class a, b, c. - Addr is in host byte order. - - @param Addr The address to get the class from - - @return IP address class, such as IP4_ADDR_CLASSA - -**/ -INTN -EFIAPI -NetGetIpClass ( - IN IP4_ADDR Addr - ); - -/** - Check whether the IP is a valid unicast address according to - the netmask. If NetMask is zero, use the IP address's class to - get the default mask. - - @param Ip The IP to check againist - @param NetMask The mask of the IP - - @return TRUE if IP is a valid unicast address on the network, otherwise FALSE - -**/ -BOOLEAN -Ip4IsUnicast ( - IN IP4_ADDR Ip, - IN IP4_ADDR NetMask - ); - -extern IP4_ADDR mIp4AllMasks [IP4_MASK_NUM]; - - -extern EFI_IPv4_ADDRESS mZeroIp4Addr; - -#define NET_IS_DIGIT(Ch) (('0' <= (Ch)) && ((Ch) <= '9')) -#define NET_ROUNDUP(size, unit) (((size) + (unit) - 1) & (~((unit) - 1))) -#define NET_IS_LOWER_CASE_CHAR(Ch) (('a' <= (Ch)) && ((Ch) <= 'z')) -#define NET_IS_UPPER_CASE_CHAR(Ch) (('A' <= (Ch)) && ((Ch) <= 'Z')) - -#define TICKS_PER_MS 10000U -#define TICKS_PER_SECOND 10000000U - -#define NET_RANDOM(Seed) ((UINT32) ((UINT32) (Seed) * 1103515245UL + 12345) % 4294967295UL) - -/** - Extract a UINT32 from a byte stream, then convert it to host - byte order. Use this function to avoid alignment error. - - @param Buf The buffer to extract the UINT32. - - @return The UINT32 extracted. - -**/ -UINT32 -EFIAPI -NetGetUint32 ( - IN UINT8 *Buf - ); - -/** - Put a UINT32 to the byte stream. Convert it from host byte order - to network byte order before putting. - - @param Buf The buffer to put the UINT32 - @param Data The data to put - - @return None - -**/ -VOID -EFIAPI -NetPutUint32 ( - IN UINT8 *Buf, - IN UINT32 Data - ); - -/** - Initialize a random seed using current time. - - None - - @return The random seed initialized with current time. - -**/ -UINT32 -EFIAPI -NetRandomInitSeed ( - VOID - ); - - -#define NET_LIST_USER_STRUCT(Entry, Type, Field) \ - _CR(Entry, Type, Field) - -#define NET_LIST_USER_STRUCT_S(Entry, Type, Field, Sig) \ - CR(Entry, Type, Field, Sig) - -// -// Iterate through the doule linked list. It is NOT delete safe -// -#define NET_LIST_FOR_EACH(Entry, ListHead) \ - for(Entry = (ListHead)->ForwardLink; Entry != (ListHead); Entry = Entry->ForwardLink) - -// -// Iterate through the doule linked list. This is delete-safe. -// Don't touch NextEntry. Also, don't use this macro if list -// entries other than the Entry may be deleted when processing -// the current Entry. -// -#define NET_LIST_FOR_EACH_SAFE(Entry, NextEntry, ListHead) \ - for(Entry = (ListHead)->ForwardLink, NextEntry = Entry->ForwardLink; \ - Entry != (ListHead); \ - Entry = NextEntry, NextEntry = Entry->ForwardLink \ - ) - -// -// Make sure the list isn't empty before get the frist/last record. -// -#define NET_LIST_HEAD(ListHead, Type, Field) \ - NET_LIST_USER_STRUCT((ListHead)->ForwardLink, Type, Field) - -#define NET_LIST_TAIL(ListHead, Type, Field) \ - NET_LIST_USER_STRUCT((ListHead)->BackLink, Type, Field) - - -/** - Remove the first entry on the list - - @param Head The list header - - @return The entry that is removed from the list, NULL if the list is empty. - -**/ -LIST_ENTRY * -EFIAPI -NetListRemoveHead ( - LIST_ENTRY *Head - ); - -/** - Remove the last entry on the list - - @param Head The list head - - @return The entry that is removed from the list, NULL if the list is empty. - -**/ -LIST_ENTRY * -EFIAPI -NetListRemoveTail ( - LIST_ENTRY *Head - ); - -/** - Insert the NewEntry after the PrevEntry - - @param PrevEntry The previous entry to insert after - @param NewEntry The new entry to insert - - @return None - -**/ -VOID -EFIAPI -NetListInsertAfter ( - IN LIST_ENTRY *PrevEntry, - IN LIST_ENTRY *NewEntry - ); - -/** - Insert the NewEntry before the PostEntry - - @param PostEntry The entry to insert before - @param NewEntry The new entry to insert - - @return None - -**/ -VOID -EFIAPI -NetListInsertBefore ( - IN LIST_ENTRY *PostEntry, - IN LIST_ENTRY *NewEntry - ); - - -// -// Object container: EFI network stack spec defines various kinds of -// tokens. The drivers can share code to manage those objects. -// -typedef struct { - LIST_ENTRY Link; - VOID *Key; - VOID *Value; -} NET_MAP_ITEM; - -typedef struct { - LIST_ENTRY Used; - LIST_ENTRY Recycled; - UINTN Count; -} NET_MAP; - -#define NET_MAP_INCREAMENT 64 - -/** - Initialize the netmap. Netmap is a reposity to keep the pairs. - - @param Map The netmap to initialize - - @return None - -**/ -VOID -EFIAPI -NetMapInit ( - IN NET_MAP *Map - ); - -/** - To clean up the netmap, that is, release allocated memories. - - @param Map The netmap to clean up. - - @return None - -**/ -VOID -EFIAPI -NetMapClean ( - IN NET_MAP *Map - ); - -/** - Test whether the netmap is empty - - @param Map The net map to test - - @return TRUE if the netmap is empty, otherwise FALSE. - -**/ -BOOLEAN -EFIAPI -NetMapIsEmpty ( - IN NET_MAP *Map - ); - -/** - Return the number of the pairs in the netmap. - - @param Map The netmap to get the entry number - - @return The entry number in the netmap. - -**/ -UINTN -EFIAPI -NetMapGetCount ( - IN NET_MAP *Map - ); - -/** - Allocate an item to save the pair to the head of the netmap. - - @param Map The netmap to insert into - @param Key The user's key - @param Value The user's value for the key - - @retval EFI_OUT_OF_RESOURCES Failed to allocate the memory for the item - @retval EFI_SUCCESS The item is inserted to the head - -**/ -EFI_STATUS -EFIAPI -NetMapInsertHead ( - IN NET_MAP *Map, - IN VOID *Key, - IN VOID *Value OPTIONAL - ); - -/** - Allocate an item to save the pair to the tail of the netmap. - - @param Map The netmap to insert into - @param Key The user's key - @param Value The user's value for the key - - @retval EFI_OUT_OF_RESOURCES Failed to allocate the memory for the item - @retval EFI_SUCCESS The item is inserted to the tail - -**/ -EFI_STATUS -EFIAPI -NetMapInsertTail ( - IN NET_MAP *Map, - IN VOID *Key, - IN VOID *Value OPTIONAL - ); - -/** - Find the key in the netmap - - @param Map The netmap to search within - @param Key The key to search - - @return The point to the item contains the Key, or NULL if Key isn't in the map. - -**/ -NET_MAP_ITEM * -EFIAPI -NetMapFindKey ( - IN NET_MAP *Map, - IN VOID *Key - ); - -/** - Remove the item from the netmap - - @param Map The netmap to remove the item from - @param Item The item to remove - @param Value The variable to receive the value if not NULL - - @return The key of the removed item. - -**/ -VOID * -EFIAPI -NetMapRemoveItem ( - IN NET_MAP *Map, - IN NET_MAP_ITEM *Item, - OUT VOID **Value OPTIONAL - ); - -/** - Remove the first entry on the netmap - - @param Map The netmap to remove the head from - @param Value The variable to receive the value if not NULL - - @return The key of the item removed - -**/ -VOID * -EFIAPI -NetMapRemoveHead ( - IN NET_MAP *Map, - OUT VOID **Value OPTIONAL - ); - -/** - Remove the last entry on the netmap - - @param Map The netmap to remove the tail from - @param Value The variable to receive the value if not NULL - - @return The key of the item removed - -**/ -VOID * -EFIAPI -NetMapRemoveTail ( - IN NET_MAP *Map, - OUT VOID **Value OPTIONAL - ); - -typedef -EFI_STATUS -(*NET_MAP_CALLBACK) ( - IN NET_MAP *Map, - IN NET_MAP_ITEM *Item, - IN VOID *Arg - ); - -/** - Iterate through the netmap and call CallBack for each item. It will - contiue the traverse if CallBack returns EFI_SUCCESS, otherwise, break - from the loop. It returns the CallBack's last return value. This - function is delete safe for the current item. - - @param Map The Map to iterate through - @param CallBack The callback function to call for each item. - @param Arg The opaque parameter to the callback - - @return It returns the CallBack's last return value. - -**/ -EFI_STATUS -EFIAPI -NetMapIterate ( - IN NET_MAP *Map, - IN NET_MAP_CALLBACK CallBack, - IN VOID *Arg OPTIONAL - ); - - -// -// Helper functions to implement driver binding and service binding protocols. -// -/** - Create a child of the service that is identified by ServiceBindingGuid. - - @param Controller The controller which has the service installed. - @param Image The image handle used to open service. - @param ServiceBindingGuid The service's Guid. - @param ChildHandle The handle to receive the create child - - @retval EFI_SUCCESS The child is successfully created. - @retval Others Failed to create the child. - -**/ -EFI_STATUS -EFIAPI -NetLibCreateServiceChild ( - IN EFI_HANDLE ControllerHandle, - IN EFI_HANDLE ImageHandle, - IN EFI_GUID *ServiceBindingGuid, - OUT EFI_HANDLE *ChildHandle - ); - -/** - Destory a child of the service that is identified by ServiceBindingGuid. - - @param Controller The controller which has the service installed. - @param Image The image handle used to open service. - @param ServiceBindingGuid The service's Guid. - @param ChildHandle The child to destory - - @retval EFI_SUCCESS The child is successfully destoried. - @retval Others Failed to destory the child. - -**/ -EFI_STATUS -EFIAPI -NetLibDestroyServiceChild ( - IN EFI_HANDLE ControllerHandle, - IN EFI_HANDLE ImageHandle, - IN EFI_GUID *ServiceBindingGuid, - IN EFI_HANDLE ChildHandle - ); - -/** - Convert the mac address of the simple network protocol installed on - SnpHandle to a unicode string. Callers are responsible for freeing the - string storage. - - @param SnpHandle The handle where the simple network protocol is - installed on. - @param ImageHandle The image handle used to act as the agent handle to - get the simple network protocol. - @param MacString The pointer to store the address of the string - representation of the mac address. - - @retval EFI_OUT_OF_RESOURCES There are not enough memory resource. - @retval other Failed to open the simple network protocol. - -**/ -EFI_STATUS -EFIAPI -NetLibGetMacString ( - IN EFI_HANDLE SnpHandle, - IN EFI_HANDLE ImageHandle, - IN OUT CHAR16 **MacString - ); - -/** - Create an IPv4 device path node. - - @param Node Pointer to the IPv4 device path node. - @param Controller The handle where the NIC IP4 config protocol resides. - @param LocalIp The local IPv4 address. - @param LocalPort The local port. - @param RemoteIp The remote IPv4 address. - @param RemotePort The remote port. - @param Protocol The protocol type in the IP header. - @param UseDefaultAddress Whether this instance is using default address or not. - - @retval None -**/ -VOID -EFIAPI -NetLibCreateIPv4DPathNode ( - IN OUT IPv4_DEVICE_PATH *Node, - IN EFI_HANDLE Controller, - IN IP4_ADDR LocalIp, - IN UINT16 LocalPort, - IN IP4_ADDR RemoteIp, - IN UINT16 RemotePort, - IN UINT16 Protocol, - IN BOOLEAN UseDefaultAddress - ); - -/** - Find the UNDI/SNP handle from controller and protocol GUID. - For example, IP will open a MNP child to transmit/receive - packets, when MNP is stopped, IP should also be stopped. IP - needs to find its own private data which is related the IP's - service binding instance that is install on UNDI/SNP handle. - Now, the controller is either a MNP or ARP child handle. But - IP opens these handle BY_DRIVER, use that info, we can get the - UNDI/SNP handle. - - @param Controller Then protocol handle to check - @param ProtocolGuid The protocol that is related with the handle. - - @return The UNDI/SNP handle or NULL. - -**/ -EFI_HANDLE -EFIAPI -NetLibGetNicHandle ( - IN EFI_HANDLE Controller, - IN EFI_GUID *ProtocolGuid - ); - -/** - Add a Deferred Procedure Call to the end of the DPC queue. - - @DpcTpl The EFI_TPL that the DPC should be invoked. - @DpcProcedure Pointer to the DPC's function. - @DpcContext Pointer to the DPC's context. Passed to DpcProcedure - when DpcProcedure is invoked. - - @retval EFI_SUCCESS The DPC was queued. - @retval EFI_INVALID_PARAMETER DpcTpl is not a valid EFI_TPL. - DpcProcedure is NULL. - @retval EFI_OUT_OF_RESOURCES There are not enough resources available to - add the DPC to the queue. - -**/ -EFI_STATUS -EFIAPI -NetLibQueueDpc ( - IN EFI_TPL DpcTpl, - IN EFI_DPC_PROCEDURE DpcProcedure, - IN VOID *DpcContext OPTIONAL - ); - -/** - Add a Deferred Procedure Call to the end of the DPC queue. - - @retval EFI_SUCCESS One or more DPCs were invoked. - @retval EFI_NOT_FOUND No DPCs were invoked. - -**/ -EFI_STATUS -EFIAPI -NetLibDispatchDpc ( - VOID - ); - -/** - The constructor function caches the pointer to DPC protocol. - - The constructor function locates DPC protocol from protocol database. - It will ASSERT() if that operation fails and it will always return EFI_SUCCESS. - - @param ImageHandle The firmware allocated handle for the EFI image. - @param SystemTable A pointer to the EFI System Table. - - @retval EFI_SUCCESS The constructor always returns EFI_SUCCESS. - -**/ -EFI_STATUS -EFIAPI -NetLibDefaultUnload ( - IN EFI_HANDLE ImageHandle - ); - -enum { - // - //Various signatures - // - NET_BUF_SIGNATURE = EFI_SIGNATURE_32 ('n', 'b', 'u', 'f'), - NET_VECTOR_SIGNATURE = EFI_SIGNATURE_32 ('n', 'v', 'e', 'c'), - NET_QUE_SIGNATURE = EFI_SIGNATURE_32 ('n', 'b', 'q', 'u'), - - - NET_PROTO_DATA = 64, // Opaque buffer for protocols - NET_BUF_HEAD = 1, // Trim or allocate space from head - NET_BUF_TAIL = 0, // Trim or allocate space from tail - NET_VECTOR_OWN_FIRST = 0x01 // We allocated the 1st block in the vector -}; - -#define NET_CHECK_SIGNATURE(PData, SIGNATURE) \ - ASSERT (((PData) != NULL) && ((PData)->Signature == (SIGNATURE))) - -#define NET_SWAP_SHORT(Value) \ - ((((Value) & 0xff) << 8) | (((Value) >> 8) & 0xff)) - -// -// Single memory block in the vector. -// -typedef struct { - UINT32 Len; // The block's length - UINT8 *Bulk; // The block's Data -} NET_BLOCK; - -typedef VOID (*NET_VECTOR_EXT_FREE) (VOID *Arg); - -// -//NET_VECTOR contains several blocks to hold all packet's -//fragments and other house-keeping stuff for sharing. It -//doesn't specify the where actual packet fragment begins. -// -typedef struct { - UINT32 Signature; - INTN RefCnt; // Reference count to share NET_VECTOR. - NET_VECTOR_EXT_FREE Free; // external function to free NET_VECTOR - VOID *Arg; // opeque argument to Free - UINT32 Flag; // Flags, NET_VECTOR_OWN_FIRST - UINT32 Len; // Total length of the assocated BLOCKs - - UINT32 BlockNum; - NET_BLOCK Block[1]; -} NET_VECTOR; - -// -//NET_BLOCK_OP operate on the NET_BLOCK, It specifies -//where the actual fragment begins and where it ends -// -typedef struct { - UINT8 *BlockHead; // Block's head, or the smallest valid Head - UINT8 *BlockTail; // Block's tail. BlockTail-BlockHead=block length - UINT8 *Head; // 1st byte of the data in the block - UINT8 *Tail; // Tail of the data in the block, Tail-Head=Size - UINT32 Size; // The size of the data -} NET_BLOCK_OP; - - -// -//NET_BUF is the buffer manage structure used by the -//network stack. Every network packet may be fragmented, -//and contains multiple fragments. The Vector points to -//memory blocks used by the each fragment, and BlockOp -//specifies where each fragment begins and ends. -// -//It also contains a opaque area for protocol to store -//per-packet informations. Protocol must be caution not -//to overwrite the members after that. -// -typedef struct { - UINT32 Signature; - INTN RefCnt; - LIST_ENTRY List; // The List this NET_BUF is on - - IP4_HEAD *Ip; // Network layer header, for fast access - TCP_HEAD *Tcp; // Transport layer header, for fast access - UINT8 ProtoData [NET_PROTO_DATA]; //Protocol specific data - - NET_VECTOR *Vector; // The vector containing the packet - - UINT32 BlockOpNum; // Total number of BlockOp in the buffer - UINT32 TotalSize; // Total size of the actual packet - NET_BLOCK_OP BlockOp[1]; // Specify the position of actual packet -} NET_BUF; - - -// -//A queue of NET_BUFs, It is just a thin extension of -//NET_BUF functions. -// -typedef struct { - UINT32 Signature; - INTN RefCnt; - LIST_ENTRY List; // The List this buffer queue is on - - LIST_ENTRY BufList; // list of queued buffers - UINT32 BufSize; // total length of DATA in the buffers - UINT32 BufNum; // total number of buffers on the chain -} NET_BUF_QUEUE; - -// -// Pseudo header for TCP and UDP checksum -// -#pragma pack(1) -typedef struct { - IP4_ADDR SrcIp; - IP4_ADDR DstIp; - UINT8 Reserved; - UINT8 Protocol; - UINT16 Len; -} NET_PSEUDO_HDR; -#pragma pack() - -// -// The fragment entry table used in network interfaces. This is -// the same as NET_BLOCK now. Use two different to distinguish -// the two in case that NET_BLOCK be enhanced later. -// -typedef struct { - UINT32 Len; - UINT8 *Bulk; -} NET_FRAGMENT; - -#define NET_GET_REF(PData) ((PData)->RefCnt++) -#define NET_PUT_REF(PData) ((PData)->RefCnt--) -#define NETBUF_FROM_PROTODATA(Info) _CR((Info), NET_BUF, ProtoData) - -#define NET_BUF_SHARED(Buf) \ - (((Buf)->RefCnt > 1) || ((Buf)->Vector->RefCnt > 1)) - -#define NET_VECTOR_SIZE(BlockNum) \ - (sizeof (NET_VECTOR) + ((BlockNum) - 1) * sizeof (NET_BLOCK)) - -#define NET_BUF_SIZE(BlockOpNum) \ - (sizeof (NET_BUF) + ((BlockOpNum) - 1) * sizeof (NET_BLOCK_OP)) - -#define NET_HEADSPACE(BlockOp) \ - (UINTN)((BlockOp)->Head - (BlockOp)->BlockHead) - -#define NET_TAILSPACE(BlockOp) \ - (UINTN)((BlockOp)->BlockTail - (BlockOp)->Tail) - -/** - Allocate a single block NET_BUF. Upon allocation, all the - free space is in the tail room. - - @param Len The length of the block. - - @retval * Pointer to the allocated NET_BUF. If NULL the - allocation failed due to resource limit. - -**/ -NET_BUF * -EFIAPI -NetbufAlloc ( - IN UINT32 Len - ); - -/** - Free the buffer and its associated NET_VECTOR. - - @param Nbuf Pointer to the NET_BUF to be freed. - - @return None. - -**/ -VOID -EFIAPI -NetbufFree ( - IN NET_BUF *Nbuf - ); - -/** - Get the position of some byte in the net buffer. This can be used - to, for example, retrieve the IP header in the packet. It also - returns the fragment that contains the byte which is used mainly by - the buffer implementation itself. - - @param Nbuf Pointer to the net buffer. - @param Offset The index or offset of the byte - @param Index Index of the fragment that contains the block - - @retval * Pointer to the nth byte of data in the net buffer. - If NULL, there is no such data in the net buffer. - -**/ -UINT8 * -EFIAPI -NetbufGetByte ( - IN NET_BUF *Nbuf, - IN UINT32 Offset, - OUT UINT32 *Index OPTIONAL - ); - -/** - Create a copy of NET_BUF that share the associated NET_DATA. - - @param Nbuf Pointer to the net buffer to be cloned. - - @retval * Pointer to the cloned net buffer. - -**/ -NET_BUF * -EFIAPI -NetbufClone ( - IN NET_BUF *Nbuf - ); - -/** - Create a duplicated copy of Nbuf, data is copied. Also leave some - head space before the data. - - @param Nbuf Pointer to the net buffer to be cloned. - @param Duplicate Pointer to the net buffer to duplicate to, if NULL - a new net buffer is allocated. - @param HeadSpace Length of the head space to reserve - - @retval * Pointer to the duplicated net buffer. - -**/ -NET_BUF * -EFIAPI -NetbufDuplicate ( - IN NET_BUF *Nbuf, - IN NET_BUF *Duplicate OPTIONAL, - IN UINT32 HeadSpace - ); - -/** - Create a NET_BUF structure which contains Len byte data of - Nbuf starting from Offset. A new NET_BUF structure will be - created but the associated data in NET_VECTOR is shared. - This function exists to do IP packet fragmentation. - - @param Nbuf Pointer to the net buffer to be cloned. - @param Offset Starting point of the data to be included in new - buffer. - @param Len How many data to include in new data - @param HeadSpace How many bytes of head space to reserve for - protocol header - - @retval * Pointer to the cloned net buffer. - -**/ -NET_BUF * -EFIAPI -NetbufGetFragment ( - IN NET_BUF *Nbuf, - IN UINT32 Offset, - IN UINT32 Len, - IN UINT32 HeadSpace - ); - -/** - Reserve some space in the header room of the buffer. - Upon allocation, all the space are in the tail room - of the buffer. Call this function to move some space - to the header room. This function is quite limited in - that it can only reserver space from the first block - of an empty NET_BUF not built from the external. But - it should be enough for the network stack. - - @param Nbuf Pointer to the net buffer. - @param Len The length of buffer to be reserverd. - - @return None. - -**/ -VOID -EFIAPI -NetbufReserve ( - IN NET_BUF *Nbuf, - IN UINT32 Len - ); - -/** - Allocate some space from the header or tail of the buffer. - - @param Nbuf Pointer to the net buffer. - @param Len The length of the buffer to be allocated. - @param FromHead The flag to indicate whether reserve the data from - head or tail. TRUE for from head, and FALSE for - from tail. - - @retval * Pointer to the first byte of the allocated buffer. - -**/ -UINT8 * -EFIAPI -NetbufAllocSpace ( - IN NET_BUF *Nbuf, - IN UINT32 Len, - IN BOOLEAN FromHead - ); - -/** - Trim some data from the header or tail of the buffer. - - @param Nbuf Pointer to the net buffer. - @param Len The length of the data to be trimmed. - @param FromHead The flag to indicate whether trim data from head or - tail. TRUE for from head, and FALSE for from tail. - - @retval UINTN Length of the actually trimmed data. - -**/ -UINT32 -EFIAPI -NetbufTrim ( - IN NET_BUF *Nbuf, - IN UINT32 Len, - IN BOOLEAN FromHead - ); - -/** - Copy the data from the specific offset to the destination. - - @param Nbuf Pointer to the net buffer. - @param Offset The sequence number of the first byte to copy. - @param Len Length of the data to copy. - @param Dest The destination of the data to copy to. - - @retval UINTN The length of the copied data. - -**/ -UINT32 -EFIAPI -NetbufCopy ( - IN NET_BUF *Nbuf, - IN UINT32 Offset, - IN UINT32 Len, - IN UINT8 *Dest - ); - -/** - Build a NET_BUF from external blocks. - - @param ExtFragment Pointer to the data block. - @param ExtNum The number of the data block. - @param HeadSpace The head space to be reserved. - @param HeadLen The length of the protocol header, This function - will pull that number of data into a linear block. - @param ExtFree Pointer to the caller provided free function. - @param Arg The argument passed to ExtFree when ExtFree is - called. - - @retval * Pointer to the net buffer built from the data - blocks. - -**/ -NET_BUF * -EFIAPI -NetbufFromExt ( - IN NET_FRAGMENT *ExtFragment, - IN UINT32 ExtNum, - IN UINT32 HeadSpace, - IN UINT32 HeadLen, - IN NET_VECTOR_EXT_FREE ExtFree, - IN VOID *Arg OPTIONAL - ); - -/** - Build a fragment table to contain the fragments in the - buffer. This is the opposite of the NetbufFromExt. - - @param Nbuf Point to the net buffer - @param ExtFragment Pointer to the data block. - @param ExtNum The number of the data block. - - @retval EFI_BUFFER_TOO_SMALL The number of non-empty block is bigger than ExtNum - @retval EFI_SUCCESS Fragment table built. - -**/ -EFI_STATUS -EFIAPI -NetbufBuildExt ( - IN NET_BUF *Nbuf, - IN NET_FRAGMENT *ExtFragment, - IN UINT32 *ExtNum - ); - -/** - Build a NET_BUF from a list of NET_BUF. - - @param BufList A List of NET_BUF. - @param HeadSpace The head space to be reserved. - @param HeaderLen The length of the protocol header, This function - will pull that number of data into a linear block. - @param ExtFree Pointer to the caller provided free function. - @param Arg The argument passed to ExtFree when ExtFree is - called. - - @retval * Pointer to the net buffer built from the data - blocks. - -**/ -NET_BUF * -EFIAPI -NetbufFromBufList ( - IN LIST_ENTRY *BufList, - IN UINT32 HeadSpace, - IN UINT32 HeaderLen, - IN NET_VECTOR_EXT_FREE ExtFree, - IN VOID *Arg OPTIONAL - ); - -/** - Free a list of net buffers. - - @param Head Pointer to the head of linked net buffers. - - @return None. - -**/ -VOID -EFIAPI -NetbufFreeList ( - IN LIST_ENTRY *Head - ); - -/** - Initiate the net buffer queue. - - @param NbufQue Pointer to the net buffer queue to be initiated. - - @return None. - -**/ -VOID -EFIAPI -NetbufQueInit ( - IN NET_BUF_QUEUE *NbufQue - ); - -/** - Allocate an initialized net buffer queue. - - None. - - @retval * Pointer to the allocated net buffer queue. - -**/ -NET_BUF_QUEUE * -EFIAPI -NetbufQueAlloc ( - VOID - ); - -/** - Free a net buffer queue. - - @param NbufQue Poitner to the net buffer queue to be freed. - - @return None. - -**/ -VOID -EFIAPI -NetbufQueFree ( - IN NET_BUF_QUEUE *NbufQue - ); - -/** - Remove a net buffer from head in the specific queue. - - @param NbufQue Pointer to the net buffer queue. - - @retval * Pointer to the net buffer removed from the specific - queue. - -**/ -NET_BUF * -EFIAPI -NetbufQueRemove ( - IN NET_BUF_QUEUE *NbufQue - ); - -/** - Append a buffer to the end of the queue. - - @param NbufQue Pointer to the net buffer queue. - @param Nbuf Pointer to the net buffer to be appended. - - @return None. - -**/ -VOID -EFIAPI -NetbufQueAppend ( - IN NET_BUF_QUEUE *NbufQue, - IN NET_BUF *Nbuf - ); - -/** - Copy some data from the buffer queue to the destination. - - @param NbufQue Pointer to the net buffer queue. - @param Offset The sequence number of the first byte to copy. - @param Len Length of the data to copy. - @param Dest The destination of the data to copy to. - - @retval UINTN The length of the copied data. - -**/ -UINT32 -EFIAPI -NetbufQueCopy ( - IN NET_BUF_QUEUE *NbufQue, - IN UINT32 Offset, - IN UINT32 Len, - IN UINT8 *Dest - ); - -/** - Copy some data from the buffer queue to the destination. - - @param NbufQue Pointer to the net buffer queue. - @param Offset The sequence number of the first byte to copy. - @param Len Length of the data to copy. - @param Dest The destination of the data to copy to. - - @retval UINTN The length of the copied data. - -**/ -UINT32 -EFIAPI -NetbufQueTrim ( - IN NET_BUF_QUEUE *NbufQue, - IN UINT32 Len - ); - - -/** - Flush the net buffer queue. - - @param NbufQue Pointer to the queue to be flushed. - - @return None. - -**/ -VOID -EFIAPI -NetbufQueFlush ( - IN NET_BUF_QUEUE *NbufQue - ); - -/** - Compute checksum for a bulk of data. - - @param Bulk Pointer to the data. - @param Len Length of the data, in bytes. - - @retval UINT16 The computed checksum. - -**/ -UINT16 -EFIAPI -NetblockChecksum ( - IN UINT8 *Bulk, - IN UINT32 Len - ); - -/** - Add two checksums. - - @param Checksum1 The first checksum to be added. - @param Checksum2 The second checksum to be added. - - @retval UINT16 The new checksum. - -**/ -UINT16 -EFIAPI -NetAddChecksum ( - IN UINT16 Checksum1, - IN UINT16 Checksum2 - ); - -/** - Compute the checksum for a NET_BUF. - - @param Nbuf Pointer to the net buffer. - - @retval UINT16 The computed checksum. - -**/ -UINT16 -EFIAPI -NetbufChecksum ( - IN NET_BUF *Nbuf - ); - -/** - Compute the checksum for TCP/UDP pseudo header. - Src, Dst are in network byte order. and Len is - in host byte order. - - @param Src The source address of the packet. - @param Dst The destination address of the packet. - @param Proto The protocol type of the packet. - @param Len The length of the packet. - - @retval UINT16 The computed checksum. - -**/ -UINT16 -EFIAPI -NetPseudoHeadChecksum ( - IN IP4_ADDR Src, - IN IP4_ADDR Dst, - IN UINT8 Proto, - IN UINT16 Len - ); - -#endif +/** @file + This library is only intended to be used by UEFI network stack modules. + It provides basic functions for the UEFI network stack. + +Copyright (c) 2005 - 2017, Intel Corporation. All rights reserved.
+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. + +**/ + +#ifndef _NET_LIB_H_ +#define _NET_LIB_H_ + +#include + +#include +#include + +typedef UINT32 IP4_ADDR; +typedef UINT32 TCP_SEQNO; +typedef UINT16 TCP_PORTNO; + + +#define NET_ETHER_ADDR_LEN 6 +#define NET_IFTYPE_ETHERNET 0x01 + +#define NET_VLAN_TAG_LEN 4 +#define ETHER_TYPE_VLAN 0x8100 + +#define EFI_IP_PROTO_UDP 0x11 +#define EFI_IP_PROTO_TCP 0x06 +#define EFI_IP_PROTO_ICMP 0x01 +#define IP4_PROTO_IGMP 0x02 +#define IP6_ICMP 58 +#define DNS_MAX_NAME_SIZE 255 +#define DNS_MAX_MESSAGE_SIZE 512 + +// +// The address classification +// +#define IP4_ADDR_CLASSA 1 // Deprecated +#define IP4_ADDR_CLASSB 2 // Deprecated +#define IP4_ADDR_CLASSC 3 // Deprecated +#define IP4_ADDR_CLASSD 4 +#define IP4_ADDR_CLASSE 5 + +#define IP4_MASK_NUM 33 +#define IP6_PREFIX_NUM 129 + +#define IP4_MASK_MAX 32 +#define IP6_PREFIX_MAX 128 + +#define IP6_HOP_BY_HOP 0 +#define IP6_DESTINATION 60 +#define IP6_ROUTING 43 +#define IP6_FRAGMENT 44 +#define IP6_AH 51 +#define IP6_ESP 50 +#define IP6_NO_NEXT_HEADER 59 + +#define IP_VERSION_4 4 +#define IP_VERSION_6 6 + +#define IP6_PREFIX_LENGTH 64 + +// +// DNS QTYPE values +// +#define DNS_TYPE_A 1 +#define DNS_TYPE_NS 2 +#define DNS_TYPE_CNAME 5 +#define DNS_TYPE_SOA 6 +#define DNS_TYPE_WKS 11 +#define DNS_TYPE_PTR 12 +#define DNS_TYPE_HINFO 13 +#define DNS_TYPE_MINFO 14 +#define DNS_TYPE_MX 15 +#define DNS_TYPE_TXT 16 +#define DNS_TYPE_AAAA 28 +#define DNS_TYPE_SRV_RR 33 +#define DNS_TYPE_AXFR 252 +#define DNS_TYPE_MAILB 253 +#define DNS_TYPE_ANY 255 + +// +// DNS QCLASS values +// +#define DNS_CLASS_INET 1 +#define DNS_CLASS_CH 3 +#define DNS_CLASS_HS 4 +#define DNS_CLASS_ANY 255 + +#pragma pack(1) + +// +// Ethernet head definition +// +typedef struct { + UINT8 DstMac [NET_ETHER_ADDR_LEN]; + UINT8 SrcMac [NET_ETHER_ADDR_LEN]; + UINT16 EtherType; +} ETHER_HEAD; + +// +// 802.1Q VLAN Tag Control Information +// +typedef union { + struct { + UINT16 Vid : 12; // Unique VLAN identifier (0 to 4094) + UINT16 Cfi : 1; // Canonical Format Indicator + UINT16 Priority : 3; // 802.1Q priority level (0 to 7) + } Bits; + UINT16 Uint16; +} VLAN_TCI; + +#define VLAN_TCI_CFI_CANONICAL_MAC 0 +#define VLAN_TCI_CFI_NON_CANONICAL_MAC 1 + +// +// The EFI_IP4_HEADER is hard to use because the source and +// destination address are defined as EFI_IPv4_ADDRESS, which +// is a structure. Two structures can't be compared or masked +// directly. This is why there is an internal representation. +// +typedef struct { + UINT8 HeadLen : 4; + UINT8 Ver : 4; + UINT8 Tos; + UINT16 TotalLen; + UINT16 Id; + UINT16 Fragment; + UINT8 Ttl; + UINT8 Protocol; + UINT16 Checksum; + IP4_ADDR Src; + IP4_ADDR Dst; +} IP4_HEAD; + + +// +// ICMP head definition. Each ICMP message is categorized as either an error +// message or query message. Two message types have their own head format. +// +typedef struct { + UINT8 Type; + UINT8 Code; + UINT16 Checksum; +} IP4_ICMP_HEAD; + +typedef struct { + IP4_ICMP_HEAD Head; + UINT32 Fourth; // 4th filed of the head, it depends on Type. + IP4_HEAD IpHead; +} IP4_ICMP_ERROR_HEAD; + +typedef struct { + IP4_ICMP_HEAD Head; + UINT16 Id; + UINT16 Seq; +} IP4_ICMP_QUERY_HEAD; + +typedef struct { + UINT8 Type; + UINT8 Code; + UINT16 Checksum; +} IP6_ICMP_HEAD; + +typedef struct { + IP6_ICMP_HEAD Head; + UINT32 Fourth; + EFI_IP6_HEADER IpHead; +} IP6_ICMP_ERROR_HEAD; + +typedef struct { + IP6_ICMP_HEAD Head; + UINT32 Fourth; +} IP6_ICMP_INFORMATION_HEAD; + +// +// UDP header definition +// +typedef struct { + UINT16 SrcPort; + UINT16 DstPort; + UINT16 Length; + UINT16 Checksum; +} EFI_UDP_HEADER; + +// +// TCP header definition +// +typedef struct { + TCP_PORTNO SrcPort; + TCP_PORTNO DstPort; + TCP_SEQNO Seq; + TCP_SEQNO Ack; + UINT8 Res : 4; + UINT8 HeadLen : 4; + UINT8 Flag; + UINT16 Wnd; + UINT16 Checksum; + UINT16 Urg; +} TCP_HEAD; + +#pragma pack() + +#define NET_MAC_EQUAL(pMac1, pMac2, Len) \ + (CompareMem ((pMac1), (pMac2), Len) == 0) + +#define NET_MAC_IS_MULTICAST(Mac, BMac, Len) \ + (((*((UINT8 *) Mac) & 0x01) == 0x01) && (!NET_MAC_EQUAL (Mac, BMac, Len))) + +#define NTOHL(x) SwapBytes32 (x) + +#define HTONL(x) NTOHL(x) + +#define NTOHS(x) SwapBytes16 (x) + +#define HTONS(x) NTOHS(x) +#define NTOHLL(x) SwapBytes64 (x) +#define HTONLL(x) NTOHLL(x) +#define NTOHLLL(x) Ip6Swap128 (x) +#define HTONLLL(x) NTOHLLL(x) + +// +// Test the IP's attribute, All the IPs are in host byte order. +// +#define IP4_IS_MULTICAST(Ip) (((Ip) & 0xF0000000) == 0xE0000000) +#define IP4_IS_UNSPECIFIED(Ip) ((Ip) == 0) +#define IP4_IS_LOCAL_BROADCAST(Ip) ((Ip) == 0xFFFFFFFF) +#define IP4_NET_EQUAL(Ip1, Ip2, NetMask) (((Ip1) & (NetMask)) == ((Ip2) & (NetMask))) +#define IP4_IS_VALID_NETMASK(Ip) (NetGetMaskLength (Ip) != (IP4_MASK_MAX + 1)) + +#define IP6_IS_MULTICAST(Ip6) (((Ip6)->Addr[0]) == 0xFF) + +// +// Convert the EFI_IP4_ADDRESS to plain UINT32 IP4 address. +// +#define EFI_IP4(EfiIpAddr) (*(IP4_ADDR *) ((EfiIpAddr).Addr)) +#define EFI_NTOHL(EfiIp) (NTOHL (EFI_IP4 ((EfiIp)))) +#define EFI_IP4_EQUAL(Ip1, Ip2) (CompareMem ((Ip1), (Ip2), sizeof (EFI_IPv4_ADDRESS)) == 0) + +#define EFI_IP6_EQUAL(Ip1, Ip2) (CompareMem ((Ip1), (Ip2), sizeof (EFI_IPv6_ADDRESS)) == 0) + +#define IP4_COPY_ADDRESS(Dest, Src) (CopyMem ((Dest), (Src), sizeof (EFI_IPv4_ADDRESS))) +#define IP6_COPY_ADDRESS(Dest, Src) (CopyMem ((Dest), (Src), sizeof (EFI_IPv6_ADDRESS))) +#define IP6_COPY_LINK_ADDRESS(Mac1, Mac2) (CopyMem ((Mac1), (Mac2), sizeof (EFI_MAC_ADDRESS))) + +// +// The debug level definition. This value is also used as the +// syslog's severity level. Don't change it. +// +#define NETDEBUG_LEVEL_TRACE 5 +#define NETDEBUG_LEVEL_WARNING 4 +#define NETDEBUG_LEVEL_ERROR 3 + +// +// Network debug message is sent out as syslog packet. +// +#define NET_SYSLOG_FACILITY 16 // Syslog local facility local use +#define NET_SYSLOG_PACKET_LEN 512 +#define NET_SYSLOG_TX_TIMEOUT (500 * 1000 * 10) // 500ms +#define NET_DEBUG_MSG_LEN 470 // 512 - (ether+ip4+udp4 head length) + +// +// The debug output expects the ASCII format string, Use %a to print ASCII +// string, and %s to print UNICODE string. PrintArg must be enclosed in (). +// For example: NET_DEBUG_TRACE ("Tcp", ("State transit to %a\n", Name)); +// +#define NET_DEBUG_TRACE(Module, PrintArg) \ + NetDebugOutput ( \ + NETDEBUG_LEVEL_TRACE, \ + Module, \ + __FILE__, \ + __LINE__, \ + NetDebugASPrint PrintArg \ + ) + +#define NET_DEBUG_WARNING(Module, PrintArg) \ + NetDebugOutput ( \ + NETDEBUG_LEVEL_WARNING, \ + Module, \ + __FILE__, \ + __LINE__, \ + NetDebugASPrint PrintArg \ + ) + +#define NET_DEBUG_ERROR(Module, PrintArg) \ + NetDebugOutput ( \ + NETDEBUG_LEVEL_ERROR, \ + Module, \ + __FILE__, \ + __LINE__, \ + NetDebugASPrint PrintArg \ + ) + +/** + Allocate a buffer, then format the message to it. This is a + help function for the NET_DEBUG_XXX macros. The PrintArg of + these macros treats the variable length print parameters as a + single parameter, and pass it to the NetDebugASPrint. For + example, NET_DEBUG_TRACE ("Tcp", ("State transit to %a\n", Name)) + if extracted to: + + NetDebugOutput ( + NETDEBUG_LEVEL_TRACE, + "Tcp", + __FILE__, + __LINE__, + NetDebugASPrint ("State transit to %a\n", Name) + ) + + @param Format The ASCII format string. + @param ... The variable length parameter whose format is determined + by the Format string. + + @return The buffer containing the formatted message, + or NULL if memory allocation failed. + +**/ +CHAR8 * +EFIAPI +NetDebugASPrint ( + IN CHAR8 *Format, + ... + ); + +/** + Builds an UDP4 syslog packet and send it using SNP. + + This function will locate a instance of SNP then send the message through it. + Because it isn't open the SNP BY_DRIVER, apply caution when using it. + + @param Level The severity level of the message. + @param Module The Module that generates the log. + @param File The file that contains the log. + @param Line The exact line that contains the log. + @param Message The user message to log. + + @retval EFI_INVALID_PARAMETER Any input parameter is invalid. + @retval EFI_OUT_OF_RESOURCES Failed to allocate memory for the packet + @retval EFI_SUCCESS The log is discard because that it is more verbose + than the mNetDebugLevelMax. Or, it has been sent out. +**/ +EFI_STATUS +EFIAPI +NetDebugOutput ( + IN UINT32 Level, + IN UINT8 *Module, + IN UINT8 *File, + IN UINT32 Line, + IN UINT8 *Message + ); + + +/** + Return the length of the mask. + + Return the length of the mask. Valid values are 0 to 32. + If the mask is invalid, return the invalid length 33, which is IP4_MASK_NUM. + NetMask is in the host byte order. + + @param[in] NetMask The netmask to get the length from. + + @return The length of the netmask, or IP4_MASK_NUM (33) if the mask is invalid. + +**/ +INTN +EFIAPI +NetGetMaskLength ( + IN IP4_ADDR NetMask + ); + +/** + Return the class of the IP address, such as class A, B, C. + Addr is in host byte order. + + [ATTENTION] + Classful addressing (IP class A/B/C) has been deprecated according to RFC4632. + Caller of this function could only check the returned value against + IP4_ADDR_CLASSD (multicast) or IP4_ADDR_CLASSE (reserved) now. + + The address of class A starts with 0. + If the address belong to class A, return IP4_ADDR_CLASSA. + The address of class B starts with 10. + If the address belong to class B, return IP4_ADDR_CLASSB. + The address of class C starts with 110. + If the address belong to class C, return IP4_ADDR_CLASSC. + The address of class D starts with 1110. + If the address belong to class D, return IP4_ADDR_CLASSD. + The address of class E starts with 1111. + If the address belong to class E, return IP4_ADDR_CLASSE. + + + @param[in] Addr The address to get the class from. + + @return IP address class, such as IP4_ADDR_CLASSA. + +**/ +INTN +EFIAPI +NetGetIpClass ( + IN IP4_ADDR Addr + ); + +/** + Check whether the IP is a valid unicast address according to + the netmask. + + ASSERT if NetMask is zero. + + If all bits of the host address of IP are 0 or 1, IP is also not a valid unicast address, + except when the originator is one of the endpoints of a point-to-point link with a 31-bit + mask (RFC3021). + + @param[in] Ip The IP to check against. + @param[in] NetMask The mask of the IP. + + @return TRUE if IP is a valid unicast address on the network, otherwise FALSE. + +**/ +BOOLEAN +EFIAPI +NetIp4IsUnicast ( + IN IP4_ADDR Ip, + IN IP4_ADDR NetMask + ); + +/** + Check whether the incoming IPv6 address is a valid unicast address. + + If the address is a multicast address has binary 0xFF at the start, it is not + a valid unicast address. If the address is unspecified ::, it is not a valid + unicast address to be assigned to any node. If the address is loopback address + ::1, it is also not a valid unicast address to be assigned to any physical + interface. + + @param[in] Ip6 The IPv6 address to check against. + + @return TRUE if Ip6 is a valid unicast address on the network, otherwise FALSE. + +**/ +BOOLEAN +EFIAPI +NetIp6IsValidUnicast ( + IN EFI_IPv6_ADDRESS *Ip6 + ); + + +/** + Check whether the incoming Ipv6 address is the unspecified address or not. + + @param[in] Ip6 - Ip6 address, in network order. + + @retval TRUE - Yes, incoming Ipv6 address is the unspecified address. + @retval FALSE - The incoming Ipv6 address is not the unspecified address + +**/ +BOOLEAN +EFIAPI +NetIp6IsUnspecifiedAddr ( + IN EFI_IPv6_ADDRESS *Ip6 + ); + +/** + Check whether the incoming Ipv6 address is a link-local address. + + @param[in] Ip6 - Ip6 address, in network order. + + @retval TRUE - The incoming Ipv6 address is a link-local address. + @retval FALSE - The incoming Ipv6 address is not a link-local address. + +**/ +BOOLEAN +EFIAPI +NetIp6IsLinkLocalAddr ( + IN EFI_IPv6_ADDRESS *Ip6 + ); + +/** + Check whether the Ipv6 address1 and address2 are on the connected network. + + @param[in] Ip1 - Ip6 address1, in network order. + @param[in] Ip2 - Ip6 address2, in network order. + @param[in] PrefixLength - The prefix length of the checking net. + + @retval TRUE - Yes, the Ipv6 address1 and address2 are connected. + @retval FALSE - No the Ipv6 address1 and address2 are not connected. + +**/ +BOOLEAN +EFIAPI +NetIp6IsNetEqual ( + EFI_IPv6_ADDRESS *Ip1, + EFI_IPv6_ADDRESS *Ip2, + UINT8 PrefixLength + ); + +/** + Switches the endianess of an IPv6 address. + + This function swaps the bytes in a 128-bit IPv6 address to switch the value + from little endian to big endian or vice versa. The byte swapped value is + returned. + + @param Ip6 Points to an IPv6 address. + + @return The byte swapped IPv6 address. + +**/ +EFI_IPv6_ADDRESS * +EFIAPI +Ip6Swap128 ( + EFI_IPv6_ADDRESS *Ip6 + ); + +extern IP4_ADDR gIp4AllMasks[IP4_MASK_NUM]; + + +extern EFI_IPv4_ADDRESS mZeroIp4Addr; + +#define NET_IS_DIGIT(Ch) (('0' <= (Ch)) && ((Ch) <= '9')) +#define NET_IS_HEX(Ch) ((('0' <= (Ch)) && ((Ch) <= '9')) || (('A' <= (Ch)) && ((Ch) <= 'F')) || (('a' <= (Ch)) && ((Ch) <= 'f'))) +#define NET_ROUNDUP(size, unit) (((size) + (unit) - 1) & (~((unit) - 1))) +#define NET_IS_LOWER_CASE_CHAR(Ch) (('a' <= (Ch)) && ((Ch) <= 'z')) +#define NET_IS_UPPER_CASE_CHAR(Ch) (('A' <= (Ch)) && ((Ch) <= 'Z')) + +#define TICKS_PER_MS 10000U +#define TICKS_PER_SECOND 10000000U + +#define NET_RANDOM(Seed) ((UINT32) ((UINT32) (Seed) * 1103515245UL + 12345) % 4294967295UL) + +/** + Extract a UINT32 from a byte stream. + + This function copies a UINT32 from a byte stream, and then converts it from Network + byte order to host byte order. Use this function to avoid alignment error. + + @param[in] Buf The buffer to extract the UINT32. + + @return The UINT32 extracted. + +**/ +UINT32 +EFIAPI +NetGetUint32 ( + IN UINT8 *Buf + ); + +/** + Puts a UINT32 into the byte stream in network byte order. + + Converts a UINT32 from host byte order to network byte order, then copies it to the + byte stream. + + @param[in, out] Buf The buffer in which to put the UINT32. + @param[in] Data The data to be converted and put into the byte stream. + +**/ +VOID +EFIAPI +NetPutUint32 ( + IN OUT UINT8 *Buf, + IN UINT32 Data + ); + +/** + Initialize a random seed using current time and monotonic count. + + Get current time and monotonic count first. Then initialize a random seed + based on some basic mathematics operation on the hour, day, minute, second, + nanosecond and year of the current time and the monotonic count value. + + @return The random seed initialized with current time. + +**/ +UINT32 +EFIAPI +NetRandomInitSeed ( + VOID + ); + + +#define NET_LIST_USER_STRUCT(Entry, Type, Field) \ + BASE_CR(Entry, Type, Field) + +#define NET_LIST_USER_STRUCT_S(Entry, Type, Field, Sig) \ + CR(Entry, Type, Field, Sig) + +// +// Iterate through the double linked list. It is NOT delete safe +// +#define NET_LIST_FOR_EACH(Entry, ListHead) \ + for(Entry = (ListHead)->ForwardLink; Entry != (ListHead); Entry = Entry->ForwardLink) + +// +// Iterate through the double linked list. This is delete-safe. +// Don't touch NextEntry. Also, don't use this macro if list +// entries other than the Entry may be deleted when processing +// the current Entry. +// +#define NET_LIST_FOR_EACH_SAFE(Entry, NextEntry, ListHead) \ + for(Entry = (ListHead)->ForwardLink, NextEntry = Entry->ForwardLink; \ + Entry != (ListHead); \ + Entry = NextEntry, NextEntry = Entry->ForwardLink \ + ) + +// +// Make sure the list isn't empty before getting the first/last record. +// +#define NET_LIST_HEAD(ListHead, Type, Field) \ + NET_LIST_USER_STRUCT((ListHead)->ForwardLink, Type, Field) + +#define NET_LIST_TAIL(ListHead, Type, Field) \ + NET_LIST_USER_STRUCT((ListHead)->BackLink, Type, Field) + + +/** + Remove the first node entry on the list, and return the removed node entry. + + Removes the first node entry from a doubly linked list. It is up to the caller of + this function to release the memory used by the first node, if that is required. On + exit, the removed node is returned. + + If Head is NULL, then ASSERT(). + If Head was not initialized, then ASSERT(). + If PcdMaximumLinkedListLength is not zero, and the number of nodes in the + linked list including the head node is greater than or equal to PcdMaximumLinkedListLength, + then ASSERT(). + + @param[in, out] Head The list header. + + @return The first node entry that is removed from the list, NULL if the list is empty. + +**/ +LIST_ENTRY * +EFIAPI +NetListRemoveHead ( + IN OUT LIST_ENTRY *Head + ); + +/** + Remove the last node entry on the list and return the removed node entry. + + Removes the last node entry from a doubly linked list. It is up to the caller of + this function to release the memory used by the first node, if that is required. On + exit, the removed node is returned. + + If Head is NULL, then ASSERT(). + If Head was not initialized, then ASSERT(). + If PcdMaximumLinkedListLength is not zero, and the number of nodes in the + linked list including the head node is greater than or equal to PcdMaximumLinkedListLength, + then ASSERT(). + + @param[in, out] Head The list head. + + @return The last node entry that is removed from the list, NULL if the list is empty. + +**/ +LIST_ENTRY * +EFIAPI +NetListRemoveTail ( + IN OUT LIST_ENTRY *Head + ); + +/** + Insert a new node entry after a designated node entry of a doubly linked list. + + Inserts a new node entry designated by NewEntry after the node entry designated by PrevEntry + of the doubly linked list. + + @param[in, out] PrevEntry The entry after which to insert. + @param[in, out] NewEntry The new entry to insert. + +**/ +VOID +EFIAPI +NetListInsertAfter ( + IN OUT LIST_ENTRY *PrevEntry, + IN OUT LIST_ENTRY *NewEntry + ); + +/** + Insert a new node entry before a designated node entry of a doubly linked list. + + Inserts a new node entry designated by NewEntry before the node entry designated by PostEntry + of the doubly linked list. + + @param[in, out] PostEntry The entry to insert before. + @param[in, out] NewEntry The new entry to insert. + +**/ +VOID +EFIAPI +NetListInsertBefore ( + IN OUT LIST_ENTRY *PostEntry, + IN OUT LIST_ENTRY *NewEntry + ); + +/** + Callback function which provided by user to remove one node in NetDestroyLinkList process. + + @param[in] Entry The entry to be removed. + @param[in] Context Pointer to the callback context corresponds to the Context in NetDestroyLinkList. + + @retval EFI_SUCCESS The entry has been removed successfully. + @retval Others Fail to remove the entry. + +**/ +typedef +EFI_STATUS +(EFIAPI *NET_DESTROY_LINK_LIST_CALLBACK) ( + IN LIST_ENTRY *Entry, + IN VOID *Context OPTIONAL + ); + +/** + Safe destroy nodes in a linked list, and return the length of the list after all possible operations finished. + + Destroy network children list by list traversals is not safe due to graph dependencies between nodes. + This function performs a safe traversal to destroy these nodes by checking to see if the node being destroyed + has been removed from the list or not. + If it has been removed, then restart the traversal from the head. + If it hasn't been removed, then continue with the next node directly. + This function will end the iterate and return the CallBack's last return value if error happens, + or retrun EFI_SUCCESS if 2 complete passes are made with no changes in the number of children in the list. + + @param[in] List The head of the list. + @param[in] CallBack Pointer to the callback function to destroy one node in the list. + @param[in] Context Pointer to the callback function's context: corresponds to the + parameter Context in NET_DESTROY_LINK_LIST_CALLBACK. + @param[out] ListLength The length of the link list if the function returns successfully. + + @retval EFI_SUCCESS Two complete passes are made with no changes in the number of children. + @retval EFI_INVALID_PARAMETER The input parameter is invalid. + @retval Others Return the CallBack's last return value. + +**/ +EFI_STATUS +EFIAPI +NetDestroyLinkList ( + IN LIST_ENTRY *List, + IN NET_DESTROY_LINK_LIST_CALLBACK CallBack, + IN VOID *Context, OPTIONAL + OUT UINTN *ListLength OPTIONAL + ); + +/** + This function checks the input Handle to see if it's one of these handles in ChildHandleBuffer. + + @param[in] Handle Handle to be checked. + @param[in] NumberOfChildren Number of Handles in ChildHandleBuffer. + @param[in] ChildHandleBuffer An array of child handles to be freed. May be NULL + if NumberOfChildren is 0. + + @retval TRUE Found the input Handle in ChildHandleBuffer. + @retval FALSE Can't find the input Handle in ChildHandleBuffer. + +**/ +BOOLEAN +EFIAPI +NetIsInHandleBuffer ( + IN EFI_HANDLE Handle, + IN UINTN NumberOfChildren, + IN EFI_HANDLE *ChildHandleBuffer OPTIONAL + ); + +// +// Object container: EFI network stack spec defines various kinds of +// tokens. The drivers can share code to manage those objects. +// +typedef struct { + LIST_ENTRY Link; + VOID *Key; + VOID *Value; +} NET_MAP_ITEM; + +typedef struct { + LIST_ENTRY Used; + LIST_ENTRY Recycled; + UINTN Count; +} NET_MAP; + +#define NET_MAP_INCREAMENT 64 + +/** + Initialize the netmap. Netmap is a reposity to keep the pairs. + + Initialize the forward and backward links of two head nodes donated by Map->Used + and Map->Recycled of two doubly linked lists. + Initializes the count of the pairs in the netmap to zero. + + If Map is NULL, then ASSERT(). + If the address of Map->Used is NULL, then ASSERT(). + If the address of Map->Recycled is NULl, then ASSERT(). + + @param[in, out] Map The netmap to initialize. + +**/ +VOID +EFIAPI +NetMapInit ( + IN OUT NET_MAP *Map + ); + +/** + To clean up the netmap, that is, release allocated memories. + + Removes all nodes of the Used doubly linked list and frees memory of all related netmap items. + Removes all nodes of the Recycled doubly linked list and free memory of all related netmap items. + The number of the pairs in the netmap is set to zero. + + If Map is NULL, then ASSERT(). + + @param[in, out] Map The netmap to clean up. + +**/ +VOID +EFIAPI +NetMapClean ( + IN OUT NET_MAP *Map + ); + +/** + Test whether the netmap is empty and return true if it is. + + If the number of the pairs in the netmap is zero, return TRUE. + + If Map is NULL, then ASSERT(). + + + @param[in] Map The net map to test. + + @return TRUE if the netmap is empty, otherwise FALSE. + +**/ +BOOLEAN +EFIAPI +NetMapIsEmpty ( + IN NET_MAP *Map + ); + +/** + Return the number of the pairs in the netmap. + + @param[in] Map The netmap to get the entry number. + + @return The entry number in the netmap. + +**/ +UINTN +EFIAPI +NetMapGetCount ( + IN NET_MAP *Map + ); + +/** + Allocate an item to save the pair to the head of the netmap. + + Allocate an item to save the pair and add corresponding node entry + to the beginning of the Used doubly linked list. The number of the + pairs in the netmap increase by 1. + + If Map is NULL, then ASSERT(). + + @param[in, out] Map The netmap to insert into. + @param[in] Key The user's key. + @param[in] Value The user's value for the key. + + @retval EFI_OUT_OF_RESOURCES Failed to allocate the memory for the item. + @retval EFI_SUCCESS The item is inserted to the head. + +**/ +EFI_STATUS +EFIAPI +NetMapInsertHead ( + IN OUT NET_MAP *Map, + IN VOID *Key, + IN VOID *Value OPTIONAL + ); + +/** + Allocate an item to save the pair to the tail of the netmap. + + Allocate an item to save the pair and add corresponding node entry + to the tail of the Used doubly linked list. The number of the + pairs in the netmap increase by 1. + + If Map is NULL, then ASSERT(). + + @param[in, out] Map The netmap to insert into. + @param[in] Key The user's key. + @param[in] Value The user's value for the key. + + @retval EFI_OUT_OF_RESOURCES Failed to allocate the memory for the item. + @retval EFI_SUCCESS The item is inserted to the tail. + +**/ +EFI_STATUS +EFIAPI +NetMapInsertTail ( + IN OUT NET_MAP *Map, + IN VOID *Key, + IN VOID *Value OPTIONAL + ); + +/** + Finds the key in the netmap and returns the point to the item containing the Key. + + Iterate the Used doubly linked list of the netmap to get every item. Compare the key of every + item with the key to search. It returns the point to the item contains the Key if found. + + If Map is NULL, then ASSERT(). + + @param[in] Map The netmap to search within. + @param[in] Key The key to search. + + @return The point to the item contains the Key, or NULL if Key isn't in the map. + +**/ +NET_MAP_ITEM * +EFIAPI +NetMapFindKey ( + IN NET_MAP *Map, + IN VOID *Key + ); + +/** + Remove the node entry of the item from the netmap and return the key of the removed item. + + Remove the node entry of the item from the Used doubly linked list of the netmap. + The number of the pairs in the netmap decrease by 1. Then add the node + entry of the item to the Recycled doubly linked list of the netmap. If Value is not NULL, + Value will point to the value of the item. It returns the key of the removed item. + + If Map is NULL, then ASSERT(). + If Item is NULL, then ASSERT(). + if item in not in the netmap, then ASSERT(). + + @param[in, out] Map The netmap to remove the item from. + @param[in, out] Item The item to remove. + @param[out] Value The variable to receive the value if not NULL. + + @return The key of the removed item. + +**/ +VOID * +EFIAPI +NetMapRemoveItem ( + IN OUT NET_MAP *Map, + IN OUT NET_MAP_ITEM *Item, + OUT VOID **Value OPTIONAL + ); + +/** + Remove the first node entry on the netmap and return the key of the removed item. + + Remove the first node entry from the Used doubly linked list of the netmap. + The number of the pairs in the netmap decrease by 1. Then add the node + entry to the Recycled doubly linked list of the netmap. If parameter Value is not NULL, + parameter Value will point to the value of the item. It returns the key of the removed item. + + If Map is NULL, then ASSERT(). + If the Used doubly linked list is empty, then ASSERT(). + + @param[in, out] Map The netmap to remove the head from. + @param[out] Value The variable to receive the value if not NULL. + + @return The key of the item removed. + +**/ +VOID * +EFIAPI +NetMapRemoveHead ( + IN OUT NET_MAP *Map, + OUT VOID **Value OPTIONAL + ); + +/** + Remove the last node entry on the netmap and return the key of the removed item. + + Remove the last node entry from the Used doubly linked list of the netmap. + The number of the pairs in the netmap decrease by 1. Then add the node + entry to the Recycled doubly linked list of the netmap. If parameter Value is not NULL, + parameter Value will point to the value of the item. It returns the key of the removed item. + + If Map is NULL, then ASSERT(). + If the Used doubly linked list is empty, then ASSERT(). + + @param[in, out] Map The netmap to remove the tail from. + @param[out] Value The variable to receive the value if not NULL. + + @return The key of the item removed. + +**/ +VOID * +EFIAPI +NetMapRemoveTail ( + IN OUT NET_MAP *Map, + OUT VOID **Value OPTIONAL + ); + +typedef +EFI_STATUS +(EFIAPI *NET_MAP_CALLBACK) ( + IN NET_MAP *Map, + IN NET_MAP_ITEM *Item, + IN VOID *Arg + ); + +/** + Iterate through the netmap and call CallBack for each item. + + It will continue the traverse if CallBack returns EFI_SUCCESS, otherwise, break + from the loop. It returns the CallBack's last return value. This function is + delete safe for the current item. + + If Map is NULL, then ASSERT(). + If CallBack is NULL, then ASSERT(). + + @param[in] Map The Map to iterate through. + @param[in] CallBack The callback function to call for each item. + @param[in] Arg The opaque parameter to the callback. + + @retval EFI_SUCCESS There is no item in the netmap, or CallBack for each item + returns EFI_SUCCESS. + @retval Others It returns the CallBack's last return value. + +**/ +EFI_STATUS +EFIAPI +NetMapIterate ( + IN NET_MAP *Map, + IN NET_MAP_CALLBACK CallBack, + IN VOID *Arg OPTIONAL + ); + + +// +// Helper functions to implement driver binding and service binding protocols. +// +/** + Create a child of the service that is identified by ServiceBindingGuid. + + Get the ServiceBinding Protocol first, then use it to create a child. + + If ServiceBindingGuid is NULL, then ASSERT(). + If ChildHandle is NULL, then ASSERT(). + + @param[in] Controller The controller which has the service installed. + @param[in] Image The image handle used to open service. + @param[in] ServiceBindingGuid The service's Guid. + @param[in, out] ChildHandle The handle to receive the created child. + + @retval EFI_SUCCESS The child was successfully created. + @retval Others Failed to create the child. + +**/ +EFI_STATUS +EFIAPI +NetLibCreateServiceChild ( + IN EFI_HANDLE Controller, + IN EFI_HANDLE Image, + IN EFI_GUID *ServiceBindingGuid, + IN OUT EFI_HANDLE *ChildHandle + ); + +/** + Destroy a child of the service that is identified by ServiceBindingGuid. + + Get the ServiceBinding Protocol first, then use it to destroy a child. + + If ServiceBindingGuid is NULL, then ASSERT(). + + @param[in] Controller The controller which has the service installed. + @param[in] Image The image handle used to open service. + @param[in] ServiceBindingGuid The service's Guid. + @param[in] ChildHandle The child to destroy. + + @retval EFI_SUCCESS The child was destroyed. + @retval Others Failed to destroy the child. + +**/ +EFI_STATUS +EFIAPI +NetLibDestroyServiceChild ( + IN EFI_HANDLE Controller, + IN EFI_HANDLE Image, + IN EFI_GUID *ServiceBindingGuid, + IN EFI_HANDLE ChildHandle + ); + +/** + Get handle with Simple Network Protocol installed on it. + + There should be MNP Service Binding Protocol installed on the input ServiceHandle. + If Simple Network Protocol is already installed on the ServiceHandle, the + ServiceHandle will be returned. If SNP is not installed on the ServiceHandle, + try to find its parent handle with SNP installed. + + @param[in] ServiceHandle The handle where network service binding protocols are + installed on. + @param[out] Snp The pointer to store the address of the SNP instance. + This is an optional parameter that may be NULL. + + @return The SNP handle, or NULL if not found. + +**/ +EFI_HANDLE +EFIAPI +NetLibGetSnpHandle ( + IN EFI_HANDLE ServiceHandle, + OUT EFI_SIMPLE_NETWORK_PROTOCOL **Snp OPTIONAL + ); + +/** + Retrieve VLAN ID of a VLAN device handle. + + Search VLAN device path node in Device Path of specified ServiceHandle and + return its VLAN ID. If no VLAN device path node found, then this ServiceHandle + is not a VLAN device handle, and 0 will be returned. + + @param[in] ServiceHandle The handle where network service binding protocols are + installed on. + + @return VLAN ID of the device handle, or 0 if not a VLAN device. + +**/ +UINT16 +EFIAPI +NetLibGetVlanId ( + IN EFI_HANDLE ServiceHandle + ); + +/** + Find VLAN device handle with specified VLAN ID. + + The VLAN child device handle is created by VLAN Config Protocol on ControllerHandle. + This function will append VLAN device path node to the parent device path, + and then use LocateDevicePath() to find the correct VLAN device handle. + + @param[in] ControllerHandle The handle where network service binding protocols are + installed on. + @param[in] VlanId The configured VLAN ID for the VLAN device. + + @return The VLAN device handle, or NULL if not found. + +**/ +EFI_HANDLE +EFIAPI +NetLibGetVlanHandle ( + IN EFI_HANDLE ControllerHandle, + IN UINT16 VlanId + ); + +/** + Get MAC address associated with the network service handle. + + There should be MNP Service Binding Protocol installed on the input ServiceHandle. + If SNP is installed on the ServiceHandle or its parent handle, MAC address will + be retrieved from SNP. If no SNP found, try to get SNP mode data use MNP. + + @param[in] ServiceHandle The handle where network service binding protocols are + installed on. + @param[out] MacAddress The pointer to store the returned MAC address. + @param[out] AddressSize The length of returned MAC address. + + @retval EFI_SUCCESS MAC address was returned successfully. + @retval Others Failed to get SNP mode data. + +**/ +EFI_STATUS +EFIAPI +NetLibGetMacAddress ( + IN EFI_HANDLE ServiceHandle, + OUT EFI_MAC_ADDRESS *MacAddress, + OUT UINTN *AddressSize + ); + +/** + Convert MAC address of the NIC associated with specified Service Binding Handle + to a unicode string. Callers are responsible for freeing the string storage. + + Locate simple network protocol associated with the Service Binding Handle and + get the mac address from SNP. Then convert the mac address into a unicode + string. It takes 2 unicode characters to represent a 1 byte binary buffer. + Plus one unicode character for the null-terminator. + + @param[in] ServiceHandle The handle where network service binding protocol is + installed. + @param[in] ImageHandle The image handle used to act as the agent handle to + get the simple network protocol. This parameter is + optional and may be NULL. + @param[out] MacString The pointer to store the address of the string + representation of the mac address. + + @retval EFI_SUCCESS Converted the mac address a unicode string successfully. + @retval EFI_OUT_OF_RESOURCES There are not enough memory resources. + @retval Others Failed to open the simple network protocol. + +**/ +EFI_STATUS +EFIAPI +NetLibGetMacString ( + IN EFI_HANDLE ServiceHandle, + IN EFI_HANDLE ImageHandle, OPTIONAL + OUT CHAR16 **MacString + ); + +/** + Detect media status for specified network device. + + The underlying UNDI driver may or may not support reporting media status from + GET_STATUS command (PXE_STATFLAGS_GET_STATUS_NO_MEDIA_SUPPORTED). This routine + will try to invoke Snp->GetStatus() to get the media status. If media is already + present, it returns directly. If media is not present, it will stop SNP and then + restart SNP to get the latest media status. This provides an opportunity to get + the correct media status for old UNDI driver, which doesn't support reporting + media status from GET_STATUS command. + Note: there are two limitations for the current algorithm: + 1) For UNDI with this capability, when the cable is not attached, there will + be an redundant Stop/Start() process. + 2) for UNDI without this capability, in case that network cable is attached when + Snp->Initialize() is invoked while network cable is unattached later, + NetLibDetectMedia() will report MediaPresent as TRUE, causing upper layer + apps to wait for timeout time. + + @param[in] ServiceHandle The handle where network service binding protocols are + installed. + @param[out] MediaPresent The pointer to store the media status. + + @retval EFI_SUCCESS Media detection success. + @retval EFI_INVALID_PARAMETER ServiceHandle is not a valid network device handle. + @retval EFI_UNSUPPORTED The network device does not support media detection. + @retval EFI_DEVICE_ERROR SNP is in an unknown state. + +**/ +EFI_STATUS +EFIAPI +NetLibDetectMedia ( + IN EFI_HANDLE ServiceHandle, + OUT BOOLEAN *MediaPresent + ); + +/** + Create an IPv4 device path node. + + The header type of IPv4 device path node is MESSAGING_DEVICE_PATH. + The header subtype of IPv4 device path node is MSG_IPv4_DP. + The length of the IPv4 device path node in bytes is 19. + Get other information from parameters to make up the whole IPv4 device path node. + + @param[in, out] Node The pointer to the IPv4 device path node. + @param[in] Controller The controller handle. + @param[in] LocalIp The local IPv4 address. + @param[in] LocalPort The local port. + @param[in] RemoteIp The remote IPv4 address. + @param[in] RemotePort The remote port. + @param[in] Protocol The protocol type in the IP header. + @param[in] UseDefaultAddress Whether this instance is using default address or not. + +**/ +VOID +EFIAPI +NetLibCreateIPv4DPathNode ( + IN OUT IPv4_DEVICE_PATH *Node, + IN EFI_HANDLE Controller, + IN IP4_ADDR LocalIp, + IN UINT16 LocalPort, + IN IP4_ADDR RemoteIp, + IN UINT16 RemotePort, + IN UINT16 Protocol, + IN BOOLEAN UseDefaultAddress + ); + +/** + Create an IPv6 device path node. + + The header type of IPv6 device path node is MESSAGING_DEVICE_PATH. + The header subtype of IPv6 device path node is MSG_IPv6_DP. + The length of the IPv6 device path node in bytes is 43. + Get other information from parameters to make up the whole IPv6 device path node. + + @param[in, out] Node The pointer to the IPv6 device path node. + @param[in] Controller The controller handle. + @param[in] LocalIp The local IPv6 address. + @param[in] LocalPort The local port. + @param[in] RemoteIp The remote IPv6 address. + @param[in] RemotePort The remote port. + @param[in] Protocol The protocol type in the IP header. + +**/ +VOID +EFIAPI +NetLibCreateIPv6DPathNode ( + IN OUT IPv6_DEVICE_PATH *Node, + IN EFI_HANDLE Controller, + IN EFI_IPv6_ADDRESS *LocalIp, + IN UINT16 LocalPort, + IN EFI_IPv6_ADDRESS *RemoteIp, + IN UINT16 RemotePort, + IN UINT16 Protocol + ); + + +/** + Find the UNDI/SNP handle from controller and protocol GUID. + + For example, IP will open an MNP child to transmit/receive + packets. When MNP is stopped, IP should also be stopped. IP + needs to find its own private data that is related the IP's + service binding instance that is installed on the UNDI/SNP handle. + The controller is then either an MNP or an ARP child handle. Note that + IP opens these handles using BY_DRIVER. Use that information to get the + UNDI/SNP handle. + + @param[in] Controller The protocol handle to check. + @param[in] ProtocolGuid The protocol that is related with the handle. + + @return The UNDI/SNP handle or NULL for errors. + +**/ +EFI_HANDLE +EFIAPI +NetLibGetNicHandle ( + IN EFI_HANDLE Controller, + IN EFI_GUID *ProtocolGuid + ); + +/** + This is the default unload handle for all the network drivers. + + Disconnect the driver specified by ImageHandle from all the devices in the handle database. + Uninstall all the protocols installed in the driver entry point. + + @param[in] ImageHandle The drivers' driver image. + + @retval EFI_SUCCESS The image is unloaded. + @retval Others Failed to unload the image. + +**/ +EFI_STATUS +EFIAPI +NetLibDefaultUnload ( + IN EFI_HANDLE ImageHandle + ); + +/** + Convert one Null-terminated ASCII string (decimal dotted) to EFI_IPv4_ADDRESS. + + @param[in] String The pointer to the Ascii string. + @param[out] Ip4Address The pointer to the converted IPv4 address. + + @retval EFI_SUCCESS Converted to an IPv4 address successfully. + @retval EFI_INVALID_PARAMETER The string is malformatted, or Ip4Address is NULL. + +**/ +EFI_STATUS +EFIAPI +NetLibAsciiStrToIp4 ( + IN CONST CHAR8 *String, + OUT EFI_IPv4_ADDRESS *Ip4Address + ); + +/** + Convert one Null-terminated ASCII string to EFI_IPv6_ADDRESS. The format of the + string is defined in RFC 4291 - Text Representation of Addresses. + + @param[in] String The pointer to the Ascii string. + @param[out] Ip6Address The pointer to the converted IPv6 address. + + @retval EFI_SUCCESS Converted to an IPv6 address successfully. + @retval EFI_INVALID_PARAMETER The string is malformatted, or Ip6Address is NULL. + +**/ +EFI_STATUS +EFIAPI +NetLibAsciiStrToIp6 ( + IN CONST CHAR8 *String, + OUT EFI_IPv6_ADDRESS *Ip6Address + ); + +/** + Convert one Null-terminated Unicode string (decimal dotted) to EFI_IPv4_ADDRESS. + + @param[in] String The pointer to the Ascii string. + @param[out] Ip4Address The pointer to the converted IPv4 address. + + @retval EFI_SUCCESS Converted to an IPv4 address successfully. + @retval EFI_INVALID_PARAMETER The string is mal-formatted or Ip4Address is NULL. + +**/ +EFI_STATUS +EFIAPI +NetLibStrToIp4 ( + IN CONST CHAR16 *String, + OUT EFI_IPv4_ADDRESS *Ip4Address + ); + +/** + Convert one Null-terminated Unicode string to EFI_IPv6_ADDRESS. The format of + the string is defined in RFC 4291 - Text Representation of Addresses. + + @param[in] String The pointer to the Ascii string. + @param[out] Ip6Address The pointer to the converted IPv6 address. + + @retval EFI_SUCCESS Converted to an IPv6 address successfully. + @retval EFI_INVALID_PARAMETER The string is malformatted or Ip6Address is NULL. + +**/ +EFI_STATUS +EFIAPI +NetLibStrToIp6 ( + IN CONST CHAR16 *String, + OUT EFI_IPv6_ADDRESS *Ip6Address + ); + +/** + Convert one Null-terminated Unicode string to EFI_IPv6_ADDRESS and prefix length. + The format of the string is defined in RFC 4291 - Text Representation of Addresses + Prefixes: ipv6-address/prefix-length. + + @param[in] String The pointer to the Ascii string. + @param[out] Ip6Address The pointer to the converted IPv6 address. + @param[out] PrefixLength The pointer to the converted prefix length. + + @retval EFI_SUCCESS Converted to an IPv6 address successfully. + @retval EFI_INVALID_PARAMETER The string is malformatted, or Ip6Address is NULL. + +**/ +EFI_STATUS +EFIAPI +NetLibStrToIp6andPrefix ( + IN CONST CHAR16 *String, + OUT EFI_IPv6_ADDRESS *Ip6Address, + OUT UINT8 *PrefixLength + ); + +/** + + Convert one EFI_IPv6_ADDRESS to Null-terminated Unicode string. + The text representation of address is defined in RFC 4291. + + @param[in] Ip6Address The pointer to the IPv6 address. + @param[out] String The buffer to return the converted string. + @param[in] StringSize The length in bytes of the input String. + + @retval EFI_SUCCESS Convert to string successfully. + @retval EFI_INVALID_PARAMETER The input parameter is invalid. + @retval EFI_BUFFER_TOO_SMALL The BufferSize is too small for the result. BufferSize has been + updated with the size needed to complete the request. +**/ +EFI_STATUS +EFIAPI +NetLibIp6ToStr ( + IN EFI_IPv6_ADDRESS *Ip6Address, + OUT CHAR16 *String, + IN UINTN StringSize + ); + +// +// Various signatures +// +#define NET_BUF_SIGNATURE SIGNATURE_32 ('n', 'b', 'u', 'f') +#define NET_VECTOR_SIGNATURE SIGNATURE_32 ('n', 'v', 'e', 'c') +#define NET_QUE_SIGNATURE SIGNATURE_32 ('n', 'b', 'q', 'u') + + +#define NET_PROTO_DATA 64 // Opaque buffer for protocols +#define NET_BUF_HEAD 1 // Trim or allocate space from head +#define NET_BUF_TAIL 0 // Trim or allocate space from tail +#define NET_VECTOR_OWN_FIRST 0x01 // We allocated the 1st block in the vector + +#define NET_CHECK_SIGNATURE(PData, SIGNATURE) \ + ASSERT (((PData) != NULL) && ((PData)->Signature == (SIGNATURE))) + +// +// Single memory block in the vector. +// +typedef struct { + UINT32 Len; // The block's length + UINT8 *Bulk; // The block's Data +} NET_BLOCK; + +typedef VOID (EFIAPI *NET_VECTOR_EXT_FREE) (VOID *Arg); + +// +//NET_VECTOR contains several blocks to hold all packet's +//fragments and other house-keeping stuff for sharing. It +//doesn't specify the where actual packet fragment begins. +// +typedef struct { + UINT32 Signature; + INTN RefCnt; // Reference count to share NET_VECTOR. + NET_VECTOR_EXT_FREE Free; // external function to free NET_VECTOR + VOID *Arg; // opaque argument to Free + UINT32 Flag; // Flags, NET_VECTOR_OWN_FIRST + UINT32 Len; // Total length of the associated BLOCKs + + UINT32 BlockNum; + NET_BLOCK Block[1]; +} NET_VECTOR; + +// +//NET_BLOCK_OP operates on the NET_BLOCK. It specifies +//where the actual fragment begins and ends +// +typedef struct { + UINT8 *BlockHead; // Block's head, or the smallest valid Head + UINT8 *BlockTail; // Block's tail. BlockTail-BlockHead=block length + UINT8 *Head; // 1st byte of the data in the block + UINT8 *Tail; // Tail of the data in the block, Tail-Head=Size + UINT32 Size; // The size of the data +} NET_BLOCK_OP; + +typedef union { + IP4_HEAD *Ip4; + EFI_IP6_HEADER *Ip6; +} NET_IP_HEAD; + +// +//NET_BUF is the buffer manage structure used by the +//network stack. Every network packet may be fragmented. The Vector points to +//memory blocks used by each fragment, and BlockOp +//specifies where each fragment begins and ends. +// +//It also contains an opaque area for the protocol to store +//per-packet information. Protocol must be careful not +//to overwrite the members after that. +// +typedef struct { + UINT32 Signature; + INTN RefCnt; + LIST_ENTRY List; // The List this NET_BUF is on + + NET_IP_HEAD Ip; // Network layer header, for fast access + TCP_HEAD *Tcp; // Transport layer header, for fast access + EFI_UDP_HEADER *Udp; // User Datagram Protocol header + UINT8 ProtoData [NET_PROTO_DATA]; //Protocol specific data + + NET_VECTOR *Vector; // The vector containing the packet + + UINT32 BlockOpNum; // Total number of BlockOp in the buffer + UINT32 TotalSize; // Total size of the actual packet + NET_BLOCK_OP BlockOp[1]; // Specify the position of actual packet +} NET_BUF; + +// +//A queue of NET_BUFs. It is a thin extension of +//NET_BUF functions. +// +typedef struct { + UINT32 Signature; + INTN RefCnt; + LIST_ENTRY List; // The List this buffer queue is on + + LIST_ENTRY BufList; // list of queued buffers + UINT32 BufSize; // total length of DATA in the buffers + UINT32 BufNum; // total number of buffers on the chain +} NET_BUF_QUEUE; + +// +// Pseudo header for TCP and UDP checksum +// +#pragma pack(1) +typedef struct { + IP4_ADDR SrcIp; + IP4_ADDR DstIp; + UINT8 Reserved; + UINT8 Protocol; + UINT16 Len; +} NET_PSEUDO_HDR; + +typedef struct { + EFI_IPv6_ADDRESS SrcIp; + EFI_IPv6_ADDRESS DstIp; + UINT32 Len; + UINT32 Reserved:24; + UINT32 NextHeader:8; +} NET_IP6_PSEUDO_HDR; +#pragma pack() + +// +// The fragment entry table used in network interfaces. This is +// the same as NET_BLOCK now. Use two different to distinguish +// the two in case that NET_BLOCK be enhanced later. +// +typedef struct { + UINT32 Len; + UINT8 *Bulk; +} NET_FRAGMENT; + +#define NET_GET_REF(PData) ((PData)->RefCnt++) +#define NET_PUT_REF(PData) ((PData)->RefCnt--) +#define NETBUF_FROM_PROTODATA(Info) BASE_CR((Info), NET_BUF, ProtoData) + +#define NET_BUF_SHARED(Buf) \ + (((Buf)->RefCnt > 1) || ((Buf)->Vector->RefCnt > 1)) + +#define NET_VECTOR_SIZE(BlockNum) \ + (sizeof (NET_VECTOR) + ((BlockNum) - 1) * sizeof (NET_BLOCK)) + +#define NET_BUF_SIZE(BlockOpNum) \ + (sizeof (NET_BUF) + ((BlockOpNum) - 1) * sizeof (NET_BLOCK_OP)) + +#define NET_HEADSPACE(BlockOp) \ + ((UINTN)((BlockOp)->Head) - (UINTN)((BlockOp)->BlockHead)) + +#define NET_TAILSPACE(BlockOp) \ + ((UINTN)((BlockOp)->BlockTail) - (UINTN)((BlockOp)->Tail)) + +/** + Allocate a single block NET_BUF. Upon allocation, all the + free space is in the tail room. + + @param[in] Len The length of the block. + + @return The pointer to the allocated NET_BUF, or NULL if the + allocation failed due to resource limitations. + +**/ +NET_BUF * +EFIAPI +NetbufAlloc ( + IN UINT32 Len + ); + +/** + Free the net buffer and its associated NET_VECTOR. + + Decrease the reference count of the net buffer by one. Free the associated net + vector and itself if the reference count of the net buffer is decreased to 0. + The net vector free operation decreases the reference count of the net + vector by one, and performs the resource free operation when the reference count + of the net vector is 0. + + @param[in] Nbuf The pointer to the NET_BUF to be freed. + +**/ +VOID +EFIAPI +NetbufFree ( + IN NET_BUF *Nbuf + ); + +/** + Get the index of NET_BLOCK_OP that contains the byte at Offset in the net + buffer. + + For example, this function can be used to retrieve the IP header in the packet. It + also can be used to get the fragment that contains the byte used + mainly by the library implementation itself. + + @param[in] Nbuf The pointer to the net buffer. + @param[in] Offset The offset of the byte. + @param[out] Index Index of the NET_BLOCK_OP that contains the byte at + Offset. + + @return The pointer to the Offset'th byte of data in the net buffer, or NULL + if there is no such data in the net buffer. + +**/ +UINT8 * +EFIAPI +NetbufGetByte ( + IN NET_BUF *Nbuf, + IN UINT32 Offset, + OUT UINT32 *Index OPTIONAL + ); + +/** + Create a copy of the net buffer that shares the associated net vector. + + The reference count of the newly created net buffer is set to 1. The reference + count of the associated net vector is increased by one. + + @param[in] Nbuf The pointer to the net buffer to be cloned. + + @return The pointer to the cloned net buffer, or NULL if the + allocation failed due to resource limitations. + +**/ +NET_BUF * +EFIAPI +NetbufClone ( + IN NET_BUF *Nbuf + ); + +/** + Create a duplicated copy of the net buffer with data copied and HeadSpace + bytes of head space reserved. + + The duplicated net buffer will allocate its own memory to hold the data of the + source net buffer. + + @param[in] Nbuf The pointer to the net buffer to be duplicated from. + @param[in, out] Duplicate The pointer to the net buffer to duplicate to. If + NULL, a new net buffer is allocated. + @param[in] HeadSpace The length of the head space to reserve. + + @return The pointer to the duplicated net buffer, or NULL if + the allocation failed due to resource limitations. + +**/ +NET_BUF * +EFIAPI +NetbufDuplicate ( + IN NET_BUF *Nbuf, + IN OUT NET_BUF *Duplicate OPTIONAL, + IN UINT32 HeadSpace + ); + +/** + Create a NET_BUF structure which contains Len byte data of Nbuf starting from + Offset. + + A new NET_BUF structure will be created but the associated data in NET_VECTOR + is shared. This function exists to perform IP packet fragmentation. + + @param[in] Nbuf The pointer to the net buffer to be extracted. + @param[in] Offset Starting point of the data to be included in the new + net buffer. + @param[in] Len The bytes of data to be included in the new net buffer. + @param[in] HeadSpace The bytes of the head space to reserve for the protocol header. + + @return The pointer to the cloned net buffer, or NULL if the + allocation failed due to resource limitations. + +**/ +NET_BUF * +EFIAPI +NetbufGetFragment ( + IN NET_BUF *Nbuf, + IN UINT32 Offset, + IN UINT32 Len, + IN UINT32 HeadSpace + ); + +/** + Reserve some space in the header room of the net buffer. + + Upon allocation, all the space is in the tail room of the buffer. Call this + function to move space to the header room. This function is quite limited + in that it can only reserve space from the first block of an empty NET_BUF not + built from the external. However, it should be enough for the network stack. + + @param[in, out] Nbuf The pointer to the net buffer. + @param[in] Len The length of buffer to be reserved from the header. + +**/ +VOID +EFIAPI +NetbufReserve ( + IN OUT NET_BUF *Nbuf, + IN UINT32 Len + ); + +/** + Allocate Len bytes of space from the header or tail of the buffer. + + @param[in, out] Nbuf The pointer to the net buffer. + @param[in] Len The length of the buffer to be allocated. + @param[in] FromHead The flag to indicate whether to reserve the data + from head (TRUE) or tail (FALSE). + + @return The pointer to the first byte of the allocated buffer, + or NULL, if there is no sufficient space. + +**/ +UINT8* +EFIAPI +NetbufAllocSpace ( + IN OUT NET_BUF *Nbuf, + IN UINT32 Len, + IN BOOLEAN FromHead + ); + +/** + Trim Len bytes from the header or the tail of the net buffer. + + @param[in, out] Nbuf The pointer to the net buffer. + @param[in] Len The length of the data to be trimmed. + @param[in] FromHead The flag to indicate whether trim data is from the + head (TRUE) or the tail (FALSE). + + @return The length of the actual trimmed data, which may be less + than Len if the TotalSize of Nbuf is less than Len. + +**/ +UINT32 +EFIAPI +NetbufTrim ( + IN OUT NET_BUF *Nbuf, + IN UINT32 Len, + IN BOOLEAN FromHead + ); + +/** + Copy Len bytes of data from the specific offset of the net buffer to the + destination memory. + + The Len bytes of data may cross several fragments of the net buffer. + + @param[in] Nbuf The pointer to the net buffer. + @param[in] Offset The sequence number of the first byte to copy. + @param[in] Len The length of the data to copy. + @param[in] Dest The destination of the data to copy to. + + @return The length of the actual copied data, or 0 if the offset + specified exceeds the total size of net buffer. + +**/ +UINT32 +EFIAPI +NetbufCopy ( + IN NET_BUF *Nbuf, + IN UINT32 Offset, + IN UINT32 Len, + IN UINT8 *Dest + ); + +/** + Build a NET_BUF from external blocks. + + A new NET_BUF structure will be created from external blocks. An additional block + of memory will be allocated to hold reserved HeadSpace bytes of header room + and existing HeadLen bytes of header, but the external blocks are shared by the + net buffer to avoid data copying. + + @param[in] ExtFragment The pointer to the data block. + @param[in] ExtNum The number of the data blocks. + @param[in] HeadSpace The head space to be reserved. + @param[in] HeadLen The length of the protocol header. The function + pulls this amount of data into a linear block. + @param[in] ExtFree The pointer to the caller-provided free function. + @param[in] Arg The argument passed to ExtFree when ExtFree is + called. + + @return The pointer to the net buffer built from the data blocks, + or NULL if the allocation failed due to resource + limit. + +**/ +NET_BUF * +EFIAPI +NetbufFromExt ( + IN NET_FRAGMENT *ExtFragment, + IN UINT32 ExtNum, + IN UINT32 HeadSpace, + IN UINT32 HeadLen, + IN NET_VECTOR_EXT_FREE ExtFree, + IN VOID *Arg OPTIONAL + ); + +/** + Build a fragment table to contain the fragments in the net buffer. This is the + opposite operation of the NetbufFromExt. + + @param[in] Nbuf Points to the net buffer. + @param[in, out] ExtFragment The pointer to the data block. + @param[in, out] ExtNum The number of the data blocks. + + @retval EFI_BUFFER_TOO_SMALL The number of non-empty blocks is bigger than + ExtNum. + @retval EFI_SUCCESS The fragment table was built successfully. + +**/ +EFI_STATUS +EFIAPI +NetbufBuildExt ( + IN NET_BUF *Nbuf, + IN OUT NET_FRAGMENT *ExtFragment, + IN OUT UINT32 *ExtNum + ); + +/** + Build a net buffer from a list of net buffers. + + All the fragments will be collected from the list of NEW_BUF, and then a new + net buffer will be created through NetbufFromExt. + + @param[in] BufList A List of the net buffer. + @param[in] HeadSpace The head space to be reserved. + @param[in] HeaderLen The length of the protocol header. The function + pulls this amount of data into a linear block. + @param[in] ExtFree The pointer to the caller provided free function. + @param[in] Arg The argument passed to ExtFree when ExtFree is called. + + @return The pointer to the net buffer built from the list of net + buffers. + +**/ +NET_BUF * +EFIAPI +NetbufFromBufList ( + IN LIST_ENTRY *BufList, + IN UINT32 HeadSpace, + IN UINT32 HeaderLen, + IN NET_VECTOR_EXT_FREE ExtFree, + IN VOID *Arg OPTIONAL + ); + +/** + Free a list of net buffers. + + @param[in, out] Head The pointer to the head of linked net buffers. + +**/ +VOID +EFIAPI +NetbufFreeList ( + IN OUT LIST_ENTRY *Head + ); + +/** + Initiate the net buffer queue. + + @param[in, out] NbufQue The pointer to the net buffer queue to be initialized. + +**/ +VOID +EFIAPI +NetbufQueInit ( + IN OUT NET_BUF_QUEUE *NbufQue + ); + +/** + Allocate and initialize a net buffer queue. + + @return The pointer to the allocated net buffer queue, or NULL if the + allocation failed due to resource limit. + +**/ +NET_BUF_QUEUE * +EFIAPI +NetbufQueAlloc ( + VOID + ); + +/** + Free a net buffer queue. + + Decrease the reference count of the net buffer queue by one. The real resource + free operation isn't performed until the reference count of the net buffer + queue is decreased to 0. + + @param[in] NbufQue The pointer to the net buffer queue to be freed. + +**/ +VOID +EFIAPI +NetbufQueFree ( + IN NET_BUF_QUEUE *NbufQue + ); + +/** + Remove a net buffer from the head in the specific queue and return it. + + @param[in, out] NbufQue The pointer to the net buffer queue. + + @return The pointer to the net buffer removed from the specific queue, + or NULL if there is no net buffer in the specific queue. + +**/ +NET_BUF * +EFIAPI +NetbufQueRemove ( + IN OUT NET_BUF_QUEUE *NbufQue + ); + +/** + Append a net buffer to the net buffer queue. + + @param[in, out] NbufQue The pointer to the net buffer queue. + @param[in, out] Nbuf The pointer to the net buffer to be appended. + +**/ +VOID +EFIAPI +NetbufQueAppend ( + IN OUT NET_BUF_QUEUE *NbufQue, + IN OUT NET_BUF *Nbuf + ); + +/** + Copy Len bytes of data from the net buffer queue at the specific offset to the + destination memory. + + The copying operation is the same as NetbufCopy, but applies to the net buffer + queue instead of the net buffer. + + @param[in] NbufQue The pointer to the net buffer queue. + @param[in] Offset The sequence number of the first byte to copy. + @param[in] Len The length of the data to copy. + @param[out] Dest The destination of the data to copy to. + + @return The length of the actual copied data, or 0 if the offset + specified exceeds the total size of net buffer queue. + +**/ +UINT32 +EFIAPI +NetbufQueCopy ( + IN NET_BUF_QUEUE *NbufQue, + IN UINT32 Offset, + IN UINT32 Len, + OUT UINT8 *Dest + ); + +/** + Trim Len bytes of data from the buffer queue and free any net buffer + that is completely trimmed. + + The trimming operation is the same as NetbufTrim but applies to the net buffer + queue instead of the net buffer. + + @param[in, out] NbufQue The pointer to the net buffer queue. + @param[in] Len The length of the data to trim. + + @return The actual length of the data trimmed. + +**/ +UINT32 +EFIAPI +NetbufQueTrim ( + IN OUT NET_BUF_QUEUE *NbufQue, + IN UINT32 Len + ); + + +/** + Flush the net buffer queue. + + @param[in, out] NbufQue The pointer to the queue to be flushed. + +**/ +VOID +EFIAPI +NetbufQueFlush ( + IN OUT NET_BUF_QUEUE *NbufQue + ); + +/** + Compute the checksum for a bulk of data. + + @param[in] Bulk The pointer to the data. + @param[in] Len The length of the data, in bytes. + + @return The computed checksum. + +**/ +UINT16 +EFIAPI +NetblockChecksum ( + IN UINT8 *Bulk, + IN UINT32 Len + ); + +/** + Add two checksums. + + @param[in] Checksum1 The first checksum to be added. + @param[in] Checksum2 The second checksum to be added. + + @return The new checksum. + +**/ +UINT16 +EFIAPI +NetAddChecksum ( + IN UINT16 Checksum1, + IN UINT16 Checksum2 + ); + +/** + Compute the checksum for a NET_BUF. + + @param[in] Nbuf The pointer to the net buffer. + + @return The computed checksum. + +**/ +UINT16 +EFIAPI +NetbufChecksum ( + IN NET_BUF *Nbuf + ); + +/** + Compute the checksum for TCP/UDP pseudo header. + + Src and Dst are in network byte order, and Len is in host byte order. + + @param[in] Src The source address of the packet. + @param[in] Dst The destination address of the packet. + @param[in] Proto The protocol type of the packet. + @param[in] Len The length of the packet. + + @return The computed checksum. + +**/ +UINT16 +EFIAPI +NetPseudoHeadChecksum ( + IN IP4_ADDR Src, + IN IP4_ADDR Dst, + IN UINT8 Proto, + IN UINT16 Len + ); + +/** + Compute the checksum for the TCP6/UDP6 pseudo header. + + Src and Dst are in network byte order, and Len is in host byte order. + + @param[in] Src The source address of the packet. + @param[in] Dst The destination address of the packet. + @param[in] NextHeader The protocol type of the packet. + @param[in] Len The length of the packet. + + @return The computed checksum. + +**/ +UINT16 +EFIAPI +NetIp6PseudoHeadChecksum ( + IN EFI_IPv6_ADDRESS *Src, + IN EFI_IPv6_ADDRESS *Dst, + IN UINT8 NextHeader, + IN UINT32 Len + ); + +/** + The function frees the net buffer which allocated by the IP protocol. It releases + only the net buffer and doesn't call the external free function. + + This function should be called after finishing the process of mIpSec->ProcessExt() + for outbound traffic. The (EFI_IPSEC2_PROTOCOL)->ProcessExt() allocates a new + buffer for the ESP, so there needs a function to free the old net buffer. + + @param[in] Nbuf The network buffer to be freed. + +**/ +VOID +NetIpSecNetbufFree ( + NET_BUF *Nbuf + ); + +/** + This function obtains the system guid from the smbios table. + + @param[out] SystemGuid The pointer of the returned system guid. + + @retval EFI_SUCCESS Successfully obtained the system guid. + @retval EFI_NOT_FOUND Did not find the SMBIOS table. + +**/ +EFI_STATUS +EFIAPI +NetLibGetSystemGuid ( + OUT EFI_GUID *SystemGuid + ); + +/** + Create Dns QName according the queried domain name. + QName is a domain name represented as a sequence of labels, + where each label consists of a length octet followed by that + number of octets. The QName terminates with the zero + length octet for the null label of the root. Caller should + take responsibility to free the buffer in returned pointer. + + @param DomainName The pointer to the queried domain name string. + + @retval NULL Failed to fill QName. + @return QName filled successfully. + +**/ +CHAR8 * +EFIAPI +NetLibCreateDnsQName ( + IN CHAR16 *DomainName + ); + +#endif