+/**\r
+ Create a child of the service that is identified by ServiceBindingGuid.\r
+ \r
+ Get the ServiceBinding Protocol first, then use it to create a child.\r
+\r
+ If ServiceBindingGuid is NULL, then ASSERT().\r
+ If ChildHandle is NULL, then ASSERT().\r
+ \r
+ @param[in] Controller The controller which has the service installed.\r
+ @param[in] Image The image handle used to open service.\r
+ @param[in] ServiceBindingGuid The service's Guid.\r
+ @param[in, out] ChildHandle The handle to receive the create child.\r
+\r
+ @retval EFI_SUCCESS The child is successfully created.\r
+ @retval Others Failed to create the child.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+NetLibCreateServiceChild (\r
+ IN EFI_HANDLE Controller,\r
+ IN EFI_HANDLE Image,\r
+ IN EFI_GUID *ServiceBindingGuid,\r
+ IN OUT EFI_HANDLE *ChildHandle\r
+ );\r
+\r
+/**\r
+ Destory a child of the service that is identified by ServiceBindingGuid.\r
+ \r
+ Get the ServiceBinding Protocol first, then use it to destroy a child.\r
+ \r
+ If ServiceBindingGuid is NULL, then ASSERT().\r
+ \r
+ @param[in] Controller The controller which has the service installed.\r
+ @param[in] Image The image handle used to open service.\r
+ @param[in] ServiceBindingGuid The service's Guid.\r
+ @param[in] ChildHandle The child to destory.\r
+\r
+ @retval EFI_SUCCESS The child is successfully destoried.\r
+ @retval Others Failed to destory the child.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+NetLibDestroyServiceChild (\r
+ IN EFI_HANDLE Controller,\r
+ IN EFI_HANDLE Image,\r
+ IN EFI_GUID *ServiceBindingGuid,\r
+ IN EFI_HANDLE ChildHandle\r
+ );\r
+\r
+/**\r
+ Convert the mac address of the simple network protocol installed on\r
+ SnpHandle to a unicode string. Callers are responsible for freeing the\r
+ string storage.\r
+\r
+ Get the mac address of the Simple Network protocol from the SnpHandle. Then convert\r
+ the mac address into a unicode string. It takes 2 unicode characters to represent \r
+ a 1 byte binary buffer. Plus one unicode character for the null-terminator.\r
+\r
+\r
+ @param[in] SnpHandle The handle where the simple network protocol is\r
+ installed on.\r
+ @param[in] ImageHandle The image handle used to act as the agent handle to\r
+ get the simple network protocol.\r
+ @param[out] MacString The pointer to store the address of the string\r
+ representation of the mac address.\r
+ \r
+ @retval EFI_SUCCESS Convert the mac address a unicode string successfully.\r
+ @retval EFI_OUT_OF_RESOURCES There are not enough memory resource.\r
+ @retval Others Failed to open the simple network protocol.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+NetLibGetMacString (\r
+ IN EFI_HANDLE SnpHandle,\r
+ IN EFI_HANDLE ImageHandle,\r
+ OUT CHAR16 **MacString\r
+ );\r
+\r
+/**\r
+ Create an IPv4 device path node.\r
+ \r
+ The header type of IPv4 device path node is MESSAGING_DEVICE_PATH.\r
+ The header subtype of IPv4 device path node is MSG_IPv4_DP.\r
+ The length of the IPv4 device path node in bytes is 19.\r
+ Get other info from parameters to make up the whole IPv4 device path node.\r
+\r
+ @param[in, out] Node Pointer to the IPv4 device path node.\r
+ @param[in] Controller The handle where the NIC IP4 config protocol resides.\r
+ @param[in] LocalIp The local IPv4 address.\r
+ @param[in] LocalPort The local port.\r
+ @param[in] RemoteIp The remote IPv4 address.\r
+ @param[in] RemotePort The remote port.\r
+ @param[in] Protocol The protocol type in the IP header.\r
+ @param[in] UseDefaultAddress Whether this instance is using default address or not.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+NetLibCreateIPv4DPathNode (\r
+ IN OUT IPv4_DEVICE_PATH *Node,\r
+ IN EFI_HANDLE Controller,\r
+ IN IP4_ADDR LocalIp,\r
+ IN UINT16 LocalPort,\r
+ IN IP4_ADDR RemoteIp,\r
+ IN UINT16 RemotePort,\r
+ IN UINT16 Protocol,\r
+ IN BOOLEAN UseDefaultAddress\r
+ );\r
+\r
+/**\r
+ Find the UNDI/SNP handle from controller and protocol GUID.\r
+ \r
+ For example, IP will open a MNP child to transmit/receive\r
+ packets, when MNP is stopped, IP should also be stopped. IP\r
+ needs to find its own private data which is related the IP's\r
+ service binding instance that is install on UNDI/SNP handle.\r
+ Now, the controller is either a MNP or ARP child handle. But\r
+ IP opens these handle BY_DRIVER, use that info, we can get the\r
+ UNDI/SNP handle.\r
+\r
+ @param[in] Controller Then protocol handle to check.\r
+ @param[in] ProtocolGuid The protocol that is related with the handle.\r
+\r
+ @return The UNDI/SNP handle or NULL for errors.\r
+\r
+**/\r
+EFI_HANDLE\r
+EFIAPI\r
+NetLibGetNicHandle (\r
+ IN EFI_HANDLE Controller,\r
+ IN EFI_GUID *ProtocolGuid\r
+ );\r
+\r
+/**\r
+ Add a Deferred Procedure Call to the end of the DPC queue.\r
+\r
+ @param[in] DpcTpl The EFI_TPL that the DPC should be invoked.\r
+ @param[in] DpcProcedure Pointer to the DPC's function.\r
+ @param[in] DpcContext Pointer to the DPC's context. Passed to DpcProcedure\r
+ when DpcProcedure is invoked.\r
+\r
+ @retval EFI_SUCCESS The DPC was queued.\r
+ @retval EFI_INVALID_PARAMETER DpcTpl is not a valid EFI_TPL, or DpcProcedure\r
+ is NULL.\r
+ @retval EFI_OUT_OF_RESOURCES There are not enough resources available to\r
+ add the DPC to the queue.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+NetLibQueueDpc (\r
+ IN EFI_TPL DpcTpl,\r
+ IN EFI_DPC_PROCEDURE DpcProcedure,\r
+ IN VOID *DpcContext OPTIONAL\r
+ );\r
+\r
+/**\r
+ Dispatch the queue of DPCs. ALL DPCs that have been queued with a DpcTpl\r
+ value greater than or equal to the current TPL are invoked in the order that\r
+ they were queued. DPCs with higher DpcTpl values are invoked before DPCs with\r
+ lower DpcTpl values.\r
+\r
+ @retval EFI_SUCCESS One or more DPCs were invoked.\r
+ @retval EFI_NOT_FOUND No DPCs were invoked.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+NetLibDispatchDpc (\r
+ VOID\r
+ );\r
+\r
+/**\r
+ This is the default unload handle for all the network drivers.\r
+\r
+ Disconnect the driver specified by ImageHandle from all the devices in the handle database.\r
+ Uninstall all the protocols installed in the driver entry point.\r
+ \r
+ @param[in] ImageHandle The drivers' driver image.\r
+\r
+ @retval EFI_SUCCESS The image is unloaded.\r
+ @retval Others Failed to unload the image.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+NetLibDefaultUnload (\r
+ IN EFI_HANDLE ImageHandle\r
+ );\r
+\r
+typedef enum {\r
+ //\r
+ //Various signatures\r
+ //\r
+ NET_BUF_SIGNATURE = SIGNATURE_32 ('n', 'b', 'u', 'f'),\r
+ NET_VECTOR_SIGNATURE = SIGNATURE_32 ('n', 'v', 'e', 'c'),\r
+ NET_QUE_SIGNATURE = SIGNATURE_32 ('n', 'b', 'q', 'u'),\r
+\r
+\r
+ NET_PROTO_DATA = 64, // Opaque buffer for protocols\r
+ NET_BUF_HEAD = 1, // Trim or allocate space from head\r
+ NET_BUF_TAIL = 0, // Trim or allocate space from tail\r
+ NET_VECTOR_OWN_FIRST = 0x01 // We allocated the 1st block in the vector\r
+} NET_SIGNATURE_TYPE;\r
+\r
+#define NET_CHECK_SIGNATURE(PData, SIGNATURE) \\r
+ ASSERT (((PData) != NULL) && ((PData)->Signature == (SIGNATURE)))\r
+\r
+#define NET_SWAP_SHORT(Value) \\r
+ ((((Value) & 0xff) << 8) | (((Value) >> 8) & 0xff))\r
+\r
+//\r
+// Single memory block in the vector.\r
+//\r
+typedef struct {\r
+ UINT32 Len; // The block's length\r
+ UINT8 *Bulk; // The block's Data\r
+} NET_BLOCK;\r
+\r
+typedef VOID (*NET_VECTOR_EXT_FREE) (VOID *Arg);\r
+\r
+//\r
+//NET_VECTOR contains several blocks to hold all packet's\r
+//fragments and other house-keeping stuff for sharing. It\r
+//doesn't specify the where actual packet fragment begins.\r
+//\r
+typedef struct {\r
+ UINT32 Signature;\r
+ INTN RefCnt; // Reference count to share NET_VECTOR.\r
+ NET_VECTOR_EXT_FREE Free; // external function to free NET_VECTOR\r
+ VOID *Arg; // opeque argument to Free\r
+ UINT32 Flag; // Flags, NET_VECTOR_OWN_FIRST\r
+ UINT32 Len; // Total length of the assocated BLOCKs\r
+\r
+ UINT32 BlockNum;\r
+ NET_BLOCK Block[1];\r
+} NET_VECTOR;\r
+\r
+//\r
+//NET_BLOCK_OP operate on the NET_BLOCK, It specifies\r
+//where the actual fragment begins and where it ends\r
+//\r
+typedef struct {\r
+ UINT8 *BlockHead; // Block's head, or the smallest valid Head\r
+ UINT8 *BlockTail; // Block's tail. BlockTail-BlockHead=block length\r
+ UINT8 *Head; // 1st byte of the data in the block\r
+ UINT8 *Tail; // Tail of the data in the block, Tail-Head=Size\r
+ UINT32 Size; // The size of the data\r
+} NET_BLOCK_OP;\r
+\r
+\r
+//\r
+//NET_BUF is the buffer manage structure used by the\r
+//network stack. Every network packet may be fragmented,\r
+//and contains multiple fragments. The Vector points to\r
+//memory blocks used by the each fragment, and BlockOp\r
+//specifies where each fragment begins and ends.\r
+//\r
+//It also contains a opaque area for protocol to store\r
+//per-packet informations. Protocol must be caution not\r
+//to overwrite the members after that.\r
+//\r
+typedef struct {\r
+ UINT32 Signature;\r
+ INTN RefCnt;\r
+ LIST_ENTRY List; // The List this NET_BUF is on\r
+\r
+ IP4_HEAD *Ip; // Network layer header, for fast access\r
+ TCP_HEAD *Tcp; // Transport layer header, for fast access\r
+ UINT8 ProtoData [NET_PROTO_DATA]; //Protocol specific data\r
+\r
+ NET_VECTOR *Vector; // The vector containing the packet\r
+\r
+ UINT32 BlockOpNum; // Total number of BlockOp in the buffer\r
+ UINT32 TotalSize; // Total size of the actual packet\r
+ NET_BLOCK_OP BlockOp[1]; // Specify the position of actual packet\r
+} NET_BUF;\r
+\r
+\r
+//\r
+//A queue of NET_BUFs, It is just a thin extension of\r
+//NET_BUF functions.\r
+//\r
+typedef struct {\r
+ UINT32 Signature;\r
+ INTN RefCnt;\r
+ LIST_ENTRY List; // The List this buffer queue is on\r
+\r
+ LIST_ENTRY BufList; // list of queued buffers\r
+ UINT32 BufSize; // total length of DATA in the buffers\r
+ UINT32 BufNum; // total number of buffers on the chain\r
+} NET_BUF_QUEUE;\r
+\r
+//\r
+// Pseudo header for TCP and UDP checksum\r
+//\r
+#pragma pack(1)\r
+typedef struct {\r
+ IP4_ADDR SrcIp;\r
+ IP4_ADDR DstIp;\r
+ UINT8 Reserved;\r
+ UINT8 Protocol;\r
+ UINT16 Len;\r
+} NET_PSEUDO_HDR;\r
+#pragma pack()\r
+\r
+//\r
+// The fragment entry table used in network interfaces. This is\r
+// the same as NET_BLOCK now. Use two different to distinguish\r
+// the two in case that NET_BLOCK be enhanced later.\r
+//\r
+typedef struct {\r
+ UINT32 Len;\r
+ UINT8 *Bulk;\r
+} NET_FRAGMENT;\r
+\r
+#define NET_GET_REF(PData) ((PData)->RefCnt++)\r
+#define NET_PUT_REF(PData) ((PData)->RefCnt--)\r
+#define NETBUF_FROM_PROTODATA(Info) BASE_CR((Info), NET_BUF, ProtoData)\r
+\r
+#define NET_BUF_SHARED(Buf) \\r
+ (((Buf)->RefCnt > 1) || ((Buf)->Vector->RefCnt > 1))\r
+\r
+#define NET_VECTOR_SIZE(BlockNum) \\r
+ (sizeof (NET_VECTOR) + ((BlockNum) - 1) * sizeof (NET_BLOCK))\r
+\r
+#define NET_BUF_SIZE(BlockOpNum) \\r
+ (sizeof (NET_BUF) + ((BlockOpNum) - 1) * sizeof (NET_BLOCK_OP))\r
+\r
+#define NET_HEADSPACE(BlockOp) \\r
+ (UINTN)((BlockOp)->Head - (BlockOp)->BlockHead)\r
+\r
+#define NET_TAILSPACE(BlockOp) \\r
+ (UINTN)((BlockOp)->BlockTail - (BlockOp)->Tail)\r
+\r
+/**\r
+ Allocate a single block NET_BUF. Upon allocation, all the\r
+ free space is in the tail room.\r
+\r
+ @param[in] Len The length of the block.\r
+\r
+ @return Pointer to the allocated NET_BUF, or NULL if the \r
+ allocation failed due to resource limit.\r
+\r
+**/\r
+NET_BUF *\r
+EFIAPI\r
+NetbufAlloc (\r
+ IN UINT32 Len\r
+ );\r
+\r
+/**\r
+ Free the net buffer and its associated NET_VECTOR.\r
+ \r
+ Decrease the reference count of the net buffer by one. Free the associated net\r
+ vector and itself if the reference count of the net buffer is decreased to 0. \r
+ The net vector free operation just decrease the reference count of the net \r
+ vector by one and do the real resource free operation when the reference count\r
+ of the net vector is 0. \r
+ \r
+ @param[in] Nbuf Pointer to the NET_BUF to be freed.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+NetbufFree (\r
+ IN NET_BUF *Nbuf\r
+ );\r
+\r
+/**\r
+ Get the index of NET_BLOCK_OP that contains the byte at Offset in the net \r
+ buffer. \r
+ \r
+ This can be used to, for example, retrieve the IP header in the packet. It \r
+ also can be used to get the fragment that contains the byte which is used \r
+ mainly by the library implementation itself. \r
+\r
+ @param[in] Nbuf Pointer to the net buffer.\r
+ @param[in] Offset The offset of the byte.\r
+ @param[out] Index Index of the NET_BLOCK_OP that contains the byte at \r
+ Offset.\r
+\r
+ @return Pointer to the Offset'th byte of data in the net buffer, or NULL\r
+ if there is no such data in the net buffer.\r
+\r
+**/\r
+UINT8 *\r
+EFIAPI\r
+NetbufGetByte (\r
+ IN NET_BUF *Nbuf,\r
+ IN UINT32 Offset,\r
+ OUT UINT32 *Index OPTIONAL\r
+ );\r
+\r
+/**\r
+ Create a copy of the net buffer that shares the associated net vector. \r
+ \r
+ The reference count of the newly created net buffer is set to 1. The reference \r
+ count of the associated net vector is increased by one. \r
+\r
+ @param[in] Nbuf Pointer to the net buffer to be cloned.\r
+\r
+ @return Pointer to the cloned net buffer, or NULL if the\r
+ allocation failed due to resource limit.\r
+\r
+**/\r
+NET_BUF *\r
+EFIAPI\r
+NetbufClone (\r
+ IN NET_BUF *Nbuf\r
+ );\r
+\r
+/**\r
+ Create a duplicated copy of the net buffer with data copied and HeadSpace\r
+ bytes of head space reserved.\r
+ \r
+ The duplicated net buffer will allocate its own memory to hold the data of the\r
+ source net buffer.\r
+ \r
+ @param[in] Nbuf Pointer to the net buffer to be duplicated from.\r
+ @param[in, out] Duplicate Pointer to the net buffer to duplicate to, if \r
+ NULL a new net buffer is allocated.\r
+ @param[in] HeadSpace Length of the head space to reserve.\r
+\r
+ @return Pointer to the duplicated net buffer, or NULL if\r
+ the allocation failed due to resource limit.\r
+\r
+**/\r
+NET_BUF *\r
+EFIAPI\r
+NetbufDuplicate (\r
+ IN NET_BUF *Nbuf,\r
+ IN OUT NET_BUF *Duplicate OPTIONAL,\r
+ IN UINT32 HeadSpace\r
+ );\r
+\r
+/**\r
+ Create a NET_BUF structure which contains Len byte data of Nbuf starting from \r
+ Offset. \r
+ \r
+ A new NET_BUF structure will be created but the associated data in NET_VECTOR \r
+ is shared. This function exists to do IP packet fragmentation. \r
+\r
+ @param[in] Nbuf Pointer to the net buffer to be extracted.\r
+ @param[in] Offset Starting point of the data to be included in the new \r
+ net buffer.\r
+ @param[in] Len Bytes of data to be included in the new net buffer. \r
+ @param[in] HeadSpace Bytes of head space to reserve for protocol header. \r
+\r
+ @return Pointer to the cloned net buffer, or NULL if the \r
+ allocation failed due to resource limit.\r
+\r
+**/\r
+NET_BUF *\r
+EFIAPI\r
+NetbufGetFragment (\r
+ IN NET_BUF *Nbuf,\r
+ IN UINT32 Offset,\r
+ IN UINT32 Len,\r
+ IN UINT32 HeadSpace\r
+ );\r
+\r
+/**\r
+ Reserve some space in the header room of the net buffer.\r
+\r
+ Upon allocation, all the space are in the tail room of the buffer. Call this \r
+ function to move some space to the header room. This function is quite limited\r
+ in that it can only reserve space from the first block of an empty NET_BUF not \r
+ built from the external. But it should be enough for the network stack. \r
+\r
+ @param[in, out] Nbuf Pointer to the net buffer.\r
+ @param[in] Len The length of buffer to be reserved from the header.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+NetbufReserve (\r
+ IN OUT NET_BUF *Nbuf,\r
+ IN UINT32 Len\r
+ );\r
+\r
+/**\r
+ Allocate Len bytes of space from the header or tail of the buffer. \r
+\r
+ @param[in, out] Nbuf Pointer to the net buffer.\r
+ @param[in] Len The length of the buffer to be allocated.\r
+ @param[in] FromHead The flag to indicate whether reserve the data \r
+ from head (TRUE) or tail (FALSE).\r
+\r
+ @return Pointer to the first byte of the allocated buffer, \r
+ or NULL if there is no sufficient space.\r
+\r
+**/\r
+UINT8*\r
+EFIAPI\r
+NetbufAllocSpace (\r
+ IN OUT NET_BUF *Nbuf,\r
+ IN UINT32 Len,\r
+ IN BOOLEAN FromHead\r
+ );\r
+\r
+/**\r
+ Trim Len bytes from the header or tail of the net buffer. \r
+\r
+ @param[in, out] Nbuf Pointer to the net buffer.\r
+ @param[in] Len The length of the data to be trimmed.\r
+ @param[in] FromHead The flag to indicate whether trim data from head \r
+ (TRUE) or tail (FALSE).\r
+\r
+ @return Length of the actually trimmed data, which is possible to be less \r
+ than Len because the TotalSize of Nbuf is less than Len.\r
+\r
+**/\r
+UINT32\r
+EFIAPI\r
+NetbufTrim (\r
+ IN OUT NET_BUF *Nbuf,\r
+ IN UINT32 Len,\r
+ IN BOOLEAN FromHead\r
+ );\r
+\r
+/**\r
+ Copy Len bytes of data from the specific offset of the net buffer to the \r
+ destination memory.\r
+ \r
+ The Len bytes of data may cross the several fragments of the net buffer.\r
+ \r
+ @param[in] Nbuf Pointer to the net buffer.\r
+ @param[in] Offset The sequence number of the first byte to copy.\r
+ @param[in] Len Length of the data to copy.\r
+ @param[in] Dest The destination of the data to copy to.\r
+\r
+ @return The length of the actual copied data, or 0 if the offset\r
+ specified exceeds the total size of net buffer.\r
+\r
+**/\r
+UINT32\r
+EFIAPI\r
+NetbufCopy (\r
+ IN NET_BUF *Nbuf,\r
+ IN UINT32 Offset,\r
+ IN UINT32 Len,\r
+ IN UINT8 *Dest\r
+ );\r
+\r
+/**\r
+ Build a NET_BUF from external blocks. \r
+ \r
+ A new NET_BUF structure will be created from external blocks. Additional block\r
+ of memory will be allocated to hold reserved HeadSpace bytes of header room\r
+ and existing HeadLen bytes of header but the external blocks are shared by the\r
+ net buffer to avoid data copying.\r
+\r
+ @param[in] ExtFragment Pointer to the data block.\r
+ @param[in] ExtNum The number of the data blocks.\r
+ @param[in] HeadSpace The head space to be reserved.\r
+ @param[in] HeadLen The length of the protocol header, This function\r
+ will pull that number of data into a linear block.\r
+ @param[in] ExtFree Pointer to the caller provided free function.\r
+ @param[in] Arg The argument passed to ExtFree when ExtFree is\r
+ called.\r
+\r
+ @return Pointer to the net buffer built from the data blocks, \r
+ or NULL if the allocation failed due to resource\r
+ limit.\r
+\r
+**/\r
+NET_BUF *\r
+EFIAPI\r
+NetbufFromExt (\r
+ IN NET_FRAGMENT *ExtFragment,\r
+ IN UINT32 ExtNum,\r
+ IN UINT32 HeadSpace,\r
+ IN UINT32 HeadLen,\r
+ IN NET_VECTOR_EXT_FREE ExtFree,\r
+ IN VOID *Arg OPTIONAL\r
+ );\r
+\r
+/**\r
+ Build a fragment table to contain the fragments in the net buffer. This is the\r
+ opposite operation of the NetbufFromExt. \r
+ \r
+ @param[in] Nbuf Point to the net buffer.\r
+ @param[in, out] ExtFragment Pointer to the data block.\r
+ @param[in, out] ExtNum The number of the data blocks.\r
+\r
+ @retval EFI_BUFFER_TOO_SMALL The number of non-empty block is bigger than \r
+ ExtNum.\r
+ @retval EFI_SUCCESS Fragment table is built successfully.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+NetbufBuildExt (\r
+ IN NET_BUF *Nbuf,\r
+ IN OUT NET_FRAGMENT *ExtFragment,\r
+ IN OUT UINT32 *ExtNum\r
+ );\r
+\r
+/**\r
+ Build a net buffer from a list of net buffers.\r
+ \r
+ All the fragments will be collected from the list of NEW_BUF and then a new \r
+ net buffer will be created through NetbufFromExt. \r
+ \r
+ @param[in] BufList A List of the net buffer.\r
+ @param[in] HeadSpace The head space to be reserved.\r
+ @param[in] HeaderLen The length of the protocol header, This function\r
+ will pull that number of data into a linear block.\r
+ @param[in] ExtFree Pointer to the caller provided free function.\r
+ @param[in] Arg The argument passed to ExtFree when ExtFree is called.\r
+\r
+ @return Pointer to the net buffer built from the list of net \r
+ buffers.\r
+\r
+**/\r
+NET_BUF *\r
+EFIAPI\r
+NetbufFromBufList (\r
+ IN LIST_ENTRY *BufList,\r
+ IN UINT32 HeadSpace,\r
+ IN UINT32 HeaderLen,\r
+ IN NET_VECTOR_EXT_FREE ExtFree,\r
+ IN VOID *Arg OPTIONAL\r
+ );\r
+\r
+/**\r
+ Free a list of net buffers.\r
+\r
+ @param[in, out] Head Pointer to the head of linked net buffers.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+NetbufFreeList (\r
+ IN OUT LIST_ENTRY *Head\r
+ );\r
+\r
+/**\r
+ Initiate the net buffer queue.\r
+\r
+ @param[in, out] NbufQue Pointer to the net buffer queue to be initialized.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+NetbufQueInit (\r
+ IN OUT NET_BUF_QUEUE *NbufQue\r
+ );\r
+\r
+/**\r
+ Allocate and initialize a net buffer queue.\r
+\r
+ @return Pointer to the allocated net buffer queue, or NULL if the\r
+ allocation failed due to resource limit.\r
+\r
+**/\r
+NET_BUF_QUEUE *\r
+EFIAPI\r
+NetbufQueAlloc (\r
+ VOID\r
+ );\r
+\r
+/**\r
+ Free a net buffer queue. \r
+ \r
+ Decrease the reference count of the net buffer queue by one. The real resource\r
+ free operation isn't performed until the reference count of the net buffer \r
+ queue is decreased to 0.\r
+\r
+ @param[in] NbufQue Pointer to the net buffer queue to be freed.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+NetbufQueFree (\r
+ IN NET_BUF_QUEUE *NbufQue\r
+ );\r
+\r
+/**\r
+ Remove a net buffer from the head in the specific queue and return it.\r
+\r
+ @param[in, out] NbufQue Pointer to the net buffer queue.\r
+\r
+ @return Pointer to the net buffer removed from the specific queue, \r
+ or NULL if there is no net buffer in the specific queue.\r
+\r
+**/\r
+NET_BUF *\r
+EFIAPI\r
+NetbufQueRemove (\r
+ IN OUT NET_BUF_QUEUE *NbufQue\r
+ );\r
+\r
+/**\r
+ Append a net buffer to the net buffer queue.\r
+\r
+ @param[in, out] NbufQue Pointer to the net buffer queue.\r
+ @param[in, out] Nbuf Pointer to the net buffer to be appended.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+NetbufQueAppend (\r
+ IN OUT NET_BUF_QUEUE *NbufQue,\r
+ IN OUT NET_BUF *Nbuf\r
+ );\r
+\r
+/**\r
+ Copy Len bytes of data from the net buffer queue at the specific offset to the\r
+ destination memory.\r
+ \r
+ The copying operation is the same as NetbufCopy but applies to the net buffer\r
+ queue instead of the net buffer.\r
+ \r
+ @param[in] NbufQue Pointer to the net buffer queue.\r
+ @param[in] Offset The sequence number of the first byte to copy.\r
+ @param[in] Len Length of the data to copy.\r
+ @param[out] Dest The destination of the data to copy to.\r
+\r
+ @return The length of the actual copied data, or 0 if the offset \r
+ specified exceeds the total size of net buffer queue.\r
+\r
+**/\r
+UINT32\r
+EFIAPI\r
+NetbufQueCopy (\r
+ IN NET_BUF_QUEUE *NbufQue,\r
+ IN UINT32 Offset,\r
+ IN UINT32 Len,\r
+ OUT UINT8 *Dest\r
+ );\r
+\r
+/**\r
+ Trim Len bytes of data from the queue header, release any of the net buffer \r
+ whom is trimmed wholely.\r
+ \r
+ The trimming operation is the same as NetbufTrim but applies to the net buffer\r
+ queue instead of the net buffer.\r
+\r
+ @param[in, out] NbufQue Pointer to the net buffer queue.\r
+ @param[in] Len Length of the data to trim.\r
+\r
+ @return The actual length of the data trimmed.\r
+\r
+**/\r
+UINT32\r
+EFIAPI\r
+NetbufQueTrim (\r
+ IN OUT NET_BUF_QUEUE *NbufQue,\r
+ IN UINT32 Len\r
+ );\r
+\r
+\r
+/**\r
+ Flush the net buffer queue.\r
+\r
+ @param[in, out] NbufQue Pointer to the queue to be flushed.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+NetbufQueFlush (\r
+ IN OUT NET_BUF_QUEUE *NbufQue\r
+ );\r
+\r
+/**\r
+ Compute the checksum for a bulk of data.\r
+\r
+ @param[in] Bulk Pointer to the data.\r
+ @param[in] Len Length of the data, in bytes.\r
+\r
+ @return The computed checksum.\r
+\r
+**/\r
+UINT16\r
+EFIAPI\r
+NetblockChecksum (\r
+ IN UINT8 *Bulk,\r
+ IN UINT32 Len\r
+ );\r
+\r
+/**\r
+ Add two checksums.\r
+\r
+ @param[in] Checksum1 The first checksum to be added.\r
+ @param[in] Checksum2 The second checksum to be added.\r
+\r
+ @return The new checksum.\r
+\r
+**/\r
+UINT16\r
+EFIAPI\r
+NetAddChecksum (\r
+ IN UINT16 Checksum1,\r
+ IN UINT16 Checksum2\r
+ );\r
+\r
+/**\r
+ Compute the checksum for a NET_BUF.\r
+\r
+ @param[in] Nbuf Pointer to the net buffer.\r
+\r
+ @return The computed checksum.\r
+\r
+**/\r
+UINT16\r
+EFIAPI\r
+NetbufChecksum (\r
+ IN NET_BUF *Nbuf\r
+ );\r
+\r
+/**\r
+ Compute the checksum for TCP/UDP pseudo header. \r
+ \r
+ Src and Dst are in network byte order, and Len is in host byte order.\r
+\r
+ @param[in] Src The source address of the packet.\r
+ @param[in] Dst The destination address of the packet.\r
+ @param[in] Proto The protocol type of the packet.\r
+ @param[in] Len The length of the packet.\r
+\r
+ @return The computed checksum.\r
+\r
+**/\r
+UINT16\r
+EFIAPI\r
+NetPseudoHeadChecksum (\r
+ IN IP4_ADDR Src,\r
+ IN IP4_ADDR Dst,\r
+ IN UINT8 Proto,\r
+ IN UINT16 Len\r
+ );\r
+\r
+#endif\r