/** @file\r
Support routines for Mtftp.\r
- \r
-Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>\r
+\r
+Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r
This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution. The full text of the license may be found at\r
\r
\r
/**\r
- Initialize the block range for either RRQ or WRQ. \r
- \r
- RRQ and WRQ have different requirements for Start and End. \r
- For example, during start up, WRQ initializes its whole valid block range \r
- to [0, 0xffff]. This is bacause the server will send us a ACK0 to inform us \r
- to start the upload. When the client received ACK0, it will remove 0 from the \r
+ Initialize the block range for either RRQ or WRQ.\r
+\r
+ RRQ and WRQ have different requirements for Start and End.\r
+ For example, during start up, WRQ initializes its whole valid block range\r
+ to [0, 0xffff]. This is bacause the server will send us a ACK0 to inform us\r
+ to start the upload. When the client received ACK0, it will remove 0 from the\r
range, get the next block number, which is 1, then upload the BLOCK1. For RRQ\r
- without option negotiation, the server will directly send us the BLOCK1 in \r
- response to the client's RRQ. When received BLOCK1, the client will remove \r
- it from the block range and send an ACK. It also works if there is option \r
+ without option negotiation, the server will directly send us the BLOCK1 in\r
+ response to the client's RRQ. When received BLOCK1, the client will remove\r
+ it from the block range and send an ACK. It also works if there is option\r
negotiation.\r
\r
@param Head The block range head to initialize\r
\r
@param Head The block range head\r
\r
- @return The first valid block number, -1 if the block range is empty. \r
+ @return The first valid block number, -1 if the block range is empty.\r
\r
**/\r
INTN\r
\r
\r
/**\r
- Set the last block number of the block range list. \r
- \r
+ Set the last block number of the block range list.\r
+\r
It will remove all the blocks after the Last. MTFTP initialize the block range\r
- to the maximum possible range, such as [0, 0xffff] for WRQ. When it gets the \r
+ to the maximum possible range, such as [0, 0xffff] for WRQ. When it gets the\r
last block number, it will call this function to set the last block number.\r
\r
@param Head The block range list\r
@param Head The block range list to remove from\r
@param Num The block number to remove\r
@param Completed Whether Num is the last block number\r
- @param TotalBlock The continuous block number in all \r
+ @param TotalBlock The continuous block number in all\r
\r
@retval EFI_NOT_FOUND The block number isn't in the block range list\r
@retval EFI_SUCCESS The block number has been removed from the list\r
Range->Start++;\r
\r
//\r
- // Note that: RFC 1350 does not mention block counter roll-over, \r
- // but several TFTP hosts implement the roll-over be able to accept \r
- // transfers of unlimited size. There is no consensus, however, whether \r
- // the counter should wrap around to zero or to one. Many implementations \r
- // wrap to zero, because this is the simplest to implement. Here we choose \r
+ // Note that: RFC 1350 does not mention block counter roll-over,\r
+ // but several TFTP hosts implement the roll-over be able to accept\r
+ // transfers of unlimited size. There is no consensus, however, whether\r
+ // the counter should wrap around to zero or to one. Many implementations\r
+ // wrap to zero, because this is the simplest to implement. Here we choose\r
// this solution.\r
//\r
- *TotalBlock = Num;\r
- \r
+ *TotalBlock = Num;\r
+\r
if (Range->Round > 0) {\r
- *TotalBlock += Range->Bound + MultU64x32 ((UINTN) (Range->Round -1), (UINT32) (Range->Bound + 1)) + 1;\r
- }\r
+ *TotalBlock += Range->Bound + MultU64x32 ((UINTN) (Range->Round -1), (UINT32) (Range->Bound + 1)) + 1;\r
+ }\r
\r
if (Range->Start > Range->Bound) {\r
- Range->Start = 0;\r
- Range->Round ++;\r
+ Range->Start = 0;\r
+ Range->Round ++;\r
}\r
\r
if ((Range->Start > Range->End) || Completed) {\r
EFI_MTFTP4_PACKET *Packet;\r
EFI_MTFTP4_OPTION *Options;\r
EFI_MTFTP4_TOKEN *Token;\r
+ RETURN_STATUS Status;\r
NET_BUF *Nbuf;\r
UINT8 *Mode;\r
UINT8 *Cur;\r
- UINT32 Len;\r
UINTN Index;\r
- UINT32 Len1;\r
- UINT32 Len2;\r
+ UINT32 BufferLength;\r
+ UINTN FileNameLength;\r
+ UINTN ModeLength;\r
+ UINTN OptionStrLength;\r
+ UINTN ValueStrLength;\r
\r
Token = Instance->Token;\r
Options = Token->OptionList;\r
//\r
// Compute the packet length\r
//\r
- Len1 = (UINT32) AsciiStrLen ((CHAR8 *) Token->Filename);\r
- Len2 = (UINT32) AsciiStrLen ((CHAR8 *) Mode);\r
- Len = (Len1 + Len2 + 4);\r
+ FileNameLength = AsciiStrLen ((CHAR8 *) Token->Filename);\r
+ ModeLength = AsciiStrLen ((CHAR8 *) Mode);\r
+ BufferLength = (UINT32) FileNameLength + (UINT32) ModeLength + 4;\r
\r
for (Index = 0; Index < Token->OptionCount; Index++) {\r
- Len1 = (UINT32) AsciiStrLen ((CHAR8 *) Options[Index].OptionStr);\r
- Len2 = (UINT32) AsciiStrLen ((CHAR8 *) Options[Index].ValueStr);\r
- Len += Len1 + Len2 + 2;\r
+ OptionStrLength = AsciiStrLen ((CHAR8 *) Options[Index].OptionStr);\r
+ ValueStrLength = AsciiStrLen ((CHAR8 *) Options[Index].ValueStr);\r
+ BufferLength += (UINT32) OptionStrLength + (UINT32) ValueStrLength + 2;\r
}\r
-\r
//\r
// Allocate a packet then copy the data over\r
//\r
- if ((Nbuf = NetbufAlloc (Len)) == NULL) {\r
+ if ((Nbuf = NetbufAlloc (BufferLength)) == NULL) {\r
return EFI_OUT_OF_RESOURCES;\r
}\r
\r
- Packet = (EFI_MTFTP4_PACKET *) NetbufAllocSpace (Nbuf, Len, FALSE);\r
+ Packet = (EFI_MTFTP4_PACKET *) NetbufAllocSpace (Nbuf, BufferLength, FALSE);\r
ASSERT (Packet != NULL);\r
\r
Packet->OpCode = HTONS (Instance->Operation);\r
+ BufferLength -= sizeof (Packet->OpCode);\r
+\r
Cur = Packet->Rrq.Filename;\r
- Cur = (UINT8 *) AsciiStrCpyS ((CHAR8 *) Cur, Len - 2, (CHAR8 *) Token->Filename);\r
- Cur += AsciiStrLen ((CHAR8 *) Token->Filename) + 1;\r
- Cur = (UINT8 *) AsciiStrCpyS ((CHAR8 *) Cur, Len - 2 - (AsciiStrLen ((CHAR8 *) Token->Filename) + 1), (CHAR8 *) Mode);\r
- Cur += AsciiStrLen ((CHAR8 *) Mode) + 1;\r
- Len -= ((UINT32) AsciiStrLen ((CHAR8 *) Token->Filename) + (UINT32) AsciiStrLen ((CHAR8 *) Mode) + 4);\r
+ Status = AsciiStrCpyS ((CHAR8 *) Cur, BufferLength, (CHAR8 *) Token->Filename);\r
+ ASSERT_EFI_ERROR (Status);\r
+ BufferLength -= (UINT32) (FileNameLength + 1);\r
+ Cur += FileNameLength + 1;\r
+ Status = AsciiStrCpyS ((CHAR8 *) Cur, BufferLength, (CHAR8 *) Mode);\r
+ ASSERT_EFI_ERROR (Status);\r
+ BufferLength -= (UINT32) (ModeLength + 1);\r
+ Cur += ModeLength + 1;\r
\r
for (Index = 0; Index < Token->OptionCount; ++Index) {\r
- Cur = (UINT8 *) AsciiStrCpyS ((CHAR8 *) Cur, Len, (CHAR8 *) Options[Index].OptionStr);\r
- Cur += AsciiStrLen ((CHAR8 *) Options[Index].OptionStr) + 1;\r
- Len -= (UINT32) AsciiStrLen ((CHAR8 *) Options[Index].OptionStr) + 1;\r
+ OptionStrLength = AsciiStrLen ((CHAR8 *) Options[Index].OptionStr);\r
+ ValueStrLength = AsciiStrLen ((CHAR8 *) Options[Index].ValueStr);\r
+\r
+ Status = AsciiStrCpyS ((CHAR8 *) Cur, BufferLength, (CHAR8 *) Options[Index].OptionStr);\r
+ ASSERT_EFI_ERROR (Status);\r
+ BufferLength -= (UINT32) (OptionStrLength + 1);\r
+ Cur += OptionStrLength + 1;\r
+\r
+ Status = AsciiStrCpyS ((CHAR8 *) Cur, BufferLength, (CHAR8 *) Options[Index].ValueStr);\r
+ ASSERT_EFI_ERROR (Status);\r
+ BufferLength -= (UINT32) (ValueStrLength + 1);\r
+ Cur += ValueStrLength + 1;\r
\r
- Cur = (UINT8 *) AsciiStrCpyS ((CHAR8 *) Cur, Len, (CHAR8 *) Options[Index].ValueStr);\r
- Cur += AsciiStrLen ((CHAR8 *) (CHAR8 *) Options[Index].ValueStr) + 1;\r
- Len -= (UINT32) AsciiStrLen ((CHAR8 *) (CHAR8 *) Options[Index].ValueStr) + 1;\r
}\r
\r
return Mtftp4SendPacket (Instance, Nbuf);\r
Build then send an error message.\r
\r
@param Instance The MTFTP session\r
- @param ErrCode The error code \r
+ @param ErrCode The error code\r
@param ErrInfo The error message\r
\r
@retval EFI_OUT_OF_RESOURCES Failed to allocate memory for the error packet\r
\r
/**\r
The callback function called when the packet is transmitted.\r
- \r
+\r
It simply frees the packet.\r
\r
@param Packet The transmitted (or failed to) packet\r
\r
\r
/**\r
- Send the packet for the instance. \r
- \r
- It will first save a reference to the packet for later retransmission. \r
- Then determine the destination port, listen port for requests, and connected \r
+ Send the packet for the instance.\r
+\r
+ It will first save a reference to the packet for later retransmission.\r
+ Then determine the destination port, listen port for requests, and connected\r
port for others. At last, send the packet out.\r
\r
@param Instance The Mtftp instance\r
ASSERT (Buffer != NULL);\r
OpCode = NTOHS (*(UINT16 *)Buffer);\r
\r
- if ((OpCode == EFI_MTFTP4_OPCODE_RRQ) || \r
+ if ((OpCode == EFI_MTFTP4_OPCODE_RRQ) ||\r
(OpCode == EFI_MTFTP4_OPCODE_DIR) ||\r
(OpCode == EFI_MTFTP4_OPCODE_WRQ)) {\r
UdpPoint.RemotePort = Instance->ListeningPort;\r
}\r
\r
\r
+/**\r
+ The timer ticking function in TPL_NOTIFY level for the Mtftp service instance.\r
+\r
+ @param Event The ticking event\r
+ @param Context The Mtftp service instance\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+Mtftp4OnTimerTickNotifyLevel (\r
+ IN EFI_EVENT Event,\r
+ IN VOID *Context\r
+ )\r
+{\r
+ MTFTP4_SERVICE *MtftpSb;\r
+ LIST_ENTRY *Entry;\r
+ LIST_ENTRY *Next;\r
+ MTFTP4_PROTOCOL *Instance;\r
+\r
+ MtftpSb = (MTFTP4_SERVICE *) Context;\r
+\r
+ //\r
+ // Iterate through all the children of the Mtftp service instance. Time\r
+ // out the current packet transmit.\r
+ //\r
+ NET_LIST_FOR_EACH_SAFE (Entry, Next, &MtftpSb->Children) {\r
+ Instance = NET_LIST_USER_STRUCT (Entry, MTFTP4_PROTOCOL, Link);\r
+ if ((Instance->PacketToLive == 0) || (--Instance->PacketToLive > 0)) {\r
+ Instance->HasTimeout = FALSE;\r
+ } else {\r
+ Instance->HasTimeout = TRUE;\r
+ }\r
+ }\r
+}\r
+\r
+\r
/**\r
The timer ticking function for the Mtftp service instance.\r
\r
MtftpSb = (MTFTP4_SERVICE *) Context;\r
\r
//\r
- // Iterate through all the children of the Mtftp service instance. Time\r
- // out the packet. If maximum retries reached, clean the session up.\r
+ // Iterate through all the children of the Mtftp service instance.\r
//\r
NET_LIST_FOR_EACH_SAFE (Entry, Next, &MtftpSb->Children) {\r
Instance = NET_LIST_USER_STRUCT (Entry, MTFTP4_PROTOCOL, Link);\r
-\r
- if ((Instance->PacketToLive == 0) || (--Instance->PacketToLive > 0)) {\r
+ if (!Instance->HasTimeout) {\r
continue;\r
}\r
\r
+ Instance->HasTimeout = FALSE;\r
+\r
//\r
// Call the user's time out handler\r
//\r
Token = Instance->Token;\r
\r
- if ((Token->TimeoutCallback != NULL) &&\r
+ if (Token != NULL && Token->TimeoutCallback != NULL &&\r
EFI_ERROR (Token->TimeoutCallback (&Instance->Mtftp4, Token))) {\r
-\r
Mtftp4SendError (\r
- Instance,\r
- EFI_MTFTP4_ERRORCODE_REQUEST_DENIED,\r
- (UINT8 *) "User aborted the transfer in time out"\r
- );\r
+ Instance,\r
+ EFI_MTFTP4_ERRORCODE_REQUEST_DENIED,\r
+ (UINT8 *) "User aborted the transfer in time out"\r
+ );\r
\r
Mtftp4CleanOperation (Instance, EFI_ABORTED);\r
continue;\r
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