diff options
Diffstat (limited to 'MdeModulePkg/Universal/Network/Tcp4Dxe/Tcp4Option.c')
| -rw-r--r-- | MdeModulePkg/Universal/Network/Tcp4Dxe/Tcp4Option.c | 352 |
1 files changed, 0 insertions, 352 deletions
diff --git a/MdeModulePkg/Universal/Network/Tcp4Dxe/Tcp4Option.c b/MdeModulePkg/Universal/Network/Tcp4Dxe/Tcp4Option.c deleted file mode 100644 index e84310f6c6..0000000000 --- a/MdeModulePkg/Universal/Network/Tcp4Dxe/Tcp4Option.c +++ /dev/null @@ -1,352 +0,0 @@ -/** @file
- Routines to process TCP option.
-
-Copyright (c) 2005 - 2018, Intel Corporation. All rights reserved.<BR>
-This program and the accompanying materials
-are licensed and made available under the terms and conditions of the BSD License
-which accompanies this distribution. The full text of the license may be found at
-http://opensource.org/licenses/bsd-license.php<BR>
-
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
-**/
-
-#include "Tcp4Main.h"
-
-/**
- Get a UINT16 value from buffer.
-
- @param Buf Pointer to input buffer.
-
- @return The UINT16 value get from buffer.
-
-**/
-UINT16
-TcpGetUint16 (
- IN UINT8 *Buf
- )
-{
- UINT16 Value;
- CopyMem (&Value, Buf, sizeof (UINT16));
- return NTOHS (Value);
-}
-
-/**
- Get a UINT32 value from buffer.
-
- @param Buf Pointer to input buffer.
-
- @return The UINT32 value get from buffer.
-
-**/
-UINT32
-TcpGetUint32 (
- IN UINT8 *Buf
- )
-{
- UINT32 Value;
- CopyMem (&Value, Buf, sizeof (UINT32));
- return NTOHL (Value);
-}
-
-/**
- Put a UINT32 value in buffer.
-
- @param Buf Pointer to the buffer.
- @param Data The UINT32 Date to put in buffer
-
-**/
-VOID
-TcpPutUint32 (
- OUT UINT8 *Buf,
- IN UINT32 Data
- )
-{
- Data = HTONL (Data);
- CopyMem (Buf, &Data, sizeof (UINT32));
-}
-
-
-/**
- Compute the window scale value according to the given buffer size.
-
- @param Tcb Pointer to the TCP_CB of this TCP instance.
-
- @return The scale value.
-
-**/
-UINT8
-TcpComputeScale (
- IN TCP_CB *Tcb
- )
-{
- UINT8 Scale;
- UINT32 BufSize;
-
- ASSERT ((Tcb != NULL) && (Tcb->Sk != NULL));
-
- BufSize = GET_RCV_BUFFSIZE (Tcb->Sk);
-
- Scale = 0;
- while ((Scale < TCP_OPTION_MAX_WS) &&
- ((UINT32) (TCP_OPTION_MAX_WIN << Scale) < BufSize)) {
-
- Scale++;
- }
-
- return Scale;
-}
-
-
-/**
- Build the TCP option in three-way handshake.
-
- @param Tcb Pointer to the TCP_CB of this TCP instance.
- @param Nbuf Pointer to the buffer to store the options.
-
- @return The total length of the TCP option field.
-
-**/
-UINT16
-TcpSynBuildOption (
- IN TCP_CB *Tcb,
- IN NET_BUF *Nbuf
- )
-{
- UINT8 *Data;
- UINT16 Len;
-
- ASSERT ((Tcb != NULL) && (Nbuf != NULL) && (Nbuf->Tcp == NULL));
-
- Len = 0;
-
- //
- // Add timestamp option if not disabled by application
- // and it is the first SYN segment or the peer has sent
- // us its timestamp.
- //
- if (!TCP_FLG_ON (Tcb->CtrlFlag, TCP_CTRL_NO_TS) &&
- (!TCP_FLG_ON (TCPSEG_NETBUF (Nbuf)->Flag, TCP_FLG_ACK) ||
- TCP_FLG_ON (Tcb->CtrlFlag, TCP_CTRL_RCVD_TS))) {
-
- Data = NetbufAllocSpace (
- Nbuf,
- TCP_OPTION_TS_ALIGNED_LEN,
- NET_BUF_HEAD
- );
-
- ASSERT (Data != NULL);
- Len += TCP_OPTION_TS_ALIGNED_LEN;
-
- TcpPutUint32 (Data, TCP_OPTION_TS_FAST);
- TcpPutUint32 (Data + 4, mTcpTick);
- TcpPutUint32 (Data + 8, 0);
- }
-
- //
- // Build window scale option, only when are configured
- // to send WS option, and either we are doing active
- // open or we have received WS option from peer.
- //
- if (!TCP_FLG_ON (Tcb->CtrlFlag, TCP_CTRL_NO_WS) &&
- (!TCP_FLG_ON (TCPSEG_NETBUF (Nbuf)->Flag, TCP_FLG_ACK) ||
- TCP_FLG_ON (Tcb->CtrlFlag, TCP_CTRL_RCVD_WS))) {
-
- Data = NetbufAllocSpace (
- Nbuf,
- TCP_OPTION_WS_ALIGNED_LEN,
- NET_BUF_HEAD
- );
-
- ASSERT (Data != NULL);
-
- Len += TCP_OPTION_WS_ALIGNED_LEN;
- TcpPutUint32 (Data, TCP_OPTION_WS_FAST | TcpComputeScale (Tcb));
- }
-
- //
- // Build MSS option
- //
- Data = NetbufAllocSpace (Nbuf, TCP_OPTION_MSS_LEN, 1);
- ASSERT (Data != NULL);
-
- Len += TCP_OPTION_MSS_LEN;
- TcpPutUint32 (Data, TCP_OPTION_MSS_FAST | Tcb->RcvMss);
-
- return Len;
-}
-
-
-/**
- Build the TCP option in synchronized states.
-
- @param Tcb Pointer to the TCP_CB of this TCP instance.
- @param Nbuf Pointer to the buffer to store the options.
-
- @return The total length of the TCP option field.
-
-**/
-UINT16
-TcpBuildOption (
- IN TCP_CB *Tcb,
- IN NET_BUF *Nbuf
- )
-{
- UINT8 *Data;
- UINT16 Len;
-
- ASSERT ((Tcb != NULL) && (Nbuf != NULL) && (Nbuf->Tcp == NULL));
- Len = 0;
-
- //
- // Build Timestamp option
- //
- if (TCP_FLG_ON (Tcb->CtrlFlag, TCP_CTRL_SND_TS) &&
- !TCP_FLG_ON (TCPSEG_NETBUF (Nbuf)->Flag, TCP_FLG_RST)) {
-
- Data = NetbufAllocSpace (
- Nbuf,
- TCP_OPTION_TS_ALIGNED_LEN,
- NET_BUF_HEAD
- );
-
- ASSERT (Data != NULL);
- Len += TCP_OPTION_TS_ALIGNED_LEN;
-
- TcpPutUint32 (Data, TCP_OPTION_TS_FAST);
- TcpPutUint32 (Data + 4, mTcpTick);
- TcpPutUint32 (Data + 8, Tcb->TsRecent);
- }
-
- return Len;
-}
-
-
-/**
- Parse the supported options.
-
- @param Tcp Pointer to the TCP_CB of this TCP instance.
- @param Option Pointer to the TCP_OPTION used to store the successfully pasrsed
- options.
-
- @retval 0 The options are successfully pasrsed.
- @retval -1 Ilegal option was found.
-
-**/
-INTN
-TcpParseOption (
- IN TCP_HEAD *Tcp,
- IN OUT TCP_OPTION *Option
- )
-{
- UINT8 *Head;
- UINT8 TotalLen;
- UINT8 Cur;
- UINT8 Type;
- UINT8 Len;
-
- ASSERT ((Tcp != NULL) && (Option != NULL));
-
- Option->Flag = 0;
-
- TotalLen = (UINT8) ((Tcp->HeadLen << 2) - sizeof (TCP_HEAD));
- if (TotalLen <= 0) {
- return 0;
- }
-
- Head = (UINT8 *) (Tcp + 1);
-
- //
- // Fast process of timestamp option
- //
- if ((TotalLen == TCP_OPTION_TS_ALIGNED_LEN) &&
- (TcpGetUint32 (Head) == TCP_OPTION_TS_FAST)) {
-
- Option->TSVal = TcpGetUint32 (Head + 4);
- Option->TSEcr = TcpGetUint32 (Head + 8);
- Option->Flag = TCP_OPTION_RCVD_TS;
-
- return 0;
- }
-
- //
- // Slow path to process the options.
- //
- Cur = 0;
-
- while (Cur < TotalLen) {
- Type = Head[Cur];
-
- switch (Type) {
- case TCP_OPTION_MSS:
- Len = Head[Cur + 1];
-
- if ((Len != TCP_OPTION_MSS_LEN) ||
- (TotalLen - Cur < TCP_OPTION_MSS_LEN)) {
-
- return -1;
- }
-
- Option->Mss = TcpGetUint16 (&Head[Cur + 2]);
- TCP_SET_FLG (Option->Flag, TCP_OPTION_RCVD_MSS);
-
- Cur += TCP_OPTION_MSS_LEN;
- break;
-
- case TCP_OPTION_WS:
- Len = Head[Cur + 1];
-
- if ((Len != TCP_OPTION_WS_LEN) ||
- (TotalLen - Cur < TCP_OPTION_WS_LEN)) {
-
- return -1;
- }
-
- Option->WndScale = (UINT8) MIN (14, Head[Cur + 2]);
- TCP_SET_FLG (Option->Flag, TCP_OPTION_RCVD_WS);
-
- Cur += TCP_OPTION_WS_LEN;
- break;
-
- case TCP_OPTION_TS:
- Len = Head[Cur + 1];
-
- if ((Len != TCP_OPTION_TS_LEN) ||
- (TotalLen - Cur < TCP_OPTION_TS_LEN)) {
-
- return -1;
- }
-
- Option->TSVal = TcpGetUint32 (&Head[Cur + 2]);
- Option->TSEcr = TcpGetUint32 (&Head[Cur + 6]);
- TCP_SET_FLG (Option->Flag, TCP_OPTION_RCVD_TS);
-
- Cur += TCP_OPTION_TS_LEN;
- break;
-
- case TCP_OPTION_NOP:
- Cur++;
- break;
-
- case TCP_OPTION_EOP:
- Cur = TotalLen;
- break;
-
- default:
- Len = Head[Cur + 1];
-
- if ((TotalLen - Cur) < Len || Len < 2) {
- return -1;
- }
-
- Cur = (UINT8) (Cur + Len);
- break;
- }
-
- }
-
- return 0;
-}
-
-
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