diff options
Diffstat (limited to 'MdeModulePkg/Universal/Network/Tcp4Dxe/Tcp4Proto.h')
| -rw-r--r-- | MdeModulePkg/Universal/Network/Tcp4Dxe/Tcp4Proto.h | 710 |
1 files changed, 355 insertions, 355 deletions
diff --git a/MdeModulePkg/Universal/Network/Tcp4Dxe/Tcp4Proto.h b/MdeModulePkg/Universal/Network/Tcp4Dxe/Tcp4Proto.h index a35a51b3cc..cfefdf2ea3 100644 --- a/MdeModulePkg/Universal/Network/Tcp4Dxe/Tcp4Proto.h +++ b/MdeModulePkg/Universal/Network/Tcp4Dxe/Tcp4Proto.h @@ -1,355 +1,355 @@ -/** @file - -Copyright (c) 2005 - 2006, 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. - -Module Name: - - Tcp4Proto.h - -Abstract: - - -**/ - -#ifndef _TCP4_PROTO_H_ -#define _TCP4_PROTO_H_ - -typedef struct _TCP_CB TCP_CB; - -#include "Tcp4Driver.h" -#include "Socket.h" -#include "Tcp4Option.h" - -// -// tcp states, Don't change their order, it is used as -// index to mTcpOutFlag and other macros -// -enum { - TCP_CLOSED = 0, - TCP_LISTEN, - TCP_SYN_SENT, - TCP_SYN_RCVD, - TCP_ESTABLISHED, - TCP_FIN_WAIT_1, - TCP_FIN_WAIT_2, - TCP_CLOSING, - TCP_TIME_WAIT, - TCP_CLOSE_WAIT, - TCP_LAST_ACK -}; - -// -// flags in the TCP header -// -enum { - - TCP_FLG_FIN = 0x01, - TCP_FLG_SYN = 0x02, - TCP_FLG_RST = 0x04, - TCP_FLG_PSH = 0x08, - TCP_FLG_ACK = 0x10, - TCP_FLG_URG = 0x20, - TCP_FLG_FLAG = 0x3F // mask for all the flags -}; - -enum { - - // - // TCP error status - // - TCP_CONNECT_REFUSED = -1, - TCP_CONNECT_RESET = -2, - TCP_CONNECT_CLOSED = -3, - - // - // Current congestion status as suggested by RFC3782. - // - TCP_CONGEST_RECOVER = 1, // during the NewReno fast recovery - TCP_CONGEST_LOSS = 2, // retxmit because of retxmit time out - TCP_CONGEST_OPEN = 3, // TCP is opening its congestion window - - // - // TCP control flags - // - TCP_CTRL_NO_NAGLE = 0x0001, // disable Nagle algorithm - TCP_CTRL_NO_KEEPALIVE = 0x0002, // disable keepalive timer - TCP_CTRL_NO_WS = 0x0004, // disable window scale option - TCP_CTRL_RCVD_WS = 0x0008, // rcvd a wnd scale option in syn - TCP_CTRL_NO_TS = 0x0010, // disable Timestamp option - TCP_CTRL_RCVD_TS = 0x0020, // rcvd a Timestamp option in syn - TCP_CTRL_SND_TS = 0x0040, // Send Timestamp option to remote - TCP_CTRL_SND_URG = 0x0080, // in urgent send mode - TCP_CTRL_RCVD_URG = 0x0100, // in urgent receive mode - TCP_CTRL_SND_PSH = 0x0200, // in PUSH send mode - TCP_CTRL_FIN_SENT = 0x0400, // FIN is sent - TCP_CTRL_FIN_ACKED = 0x0800, // FIN is ACKed. - TCP_CTRL_TIMER_ON = 0x1000, // At least one of the timer is on - TCP_CTRL_RTT_ON = 0x2000, // The RTT measurement is on - TCP_CTRL_ACK_NOW = 0x4000, // Send the ACK now, don't delay - - // - // Timer related values - // - TCP_TIMER_CONNECT = 0, // Connection establishment timer - TCP_TIMER_REXMIT = 1, // retransmit timer - TCP_TIMER_PROBE = 2, // Window probe timer - TCP_TIMER_KEEPALIVE = 3, // Keepalive timer - TCP_TIMER_FINWAIT2 = 4, // FIN_WAIT_2 timer - TCP_TIMER_2MSL = 5, // TIME_WAIT tiemr - TCP_TIMER_NUMBER = 6, // the total number of TCP timer. - TCP_TICK = 200, // every TCP tick is 200ms - TCP_TICK_HZ = 5, // the frequence of TCP tick - TCP_RTT_SHIFT = 3, // SRTT & RTTVAR scaled by 8 - TCP_RTO_MIN = TCP_TICK_HZ, // the minium value of RTO - TCP_RTO_MAX = TCP_TICK_HZ *60, // the maxium value of RTO - TCP_FOLD_RTT = 4, // timeout threshod to fold RTT - - // - // default values for some timers - // - TCP_MAX_LOSS = 12, // default max times to retxmit - TCP_KEEPALIVE_IDLE_MIN = TCP_TICK_HZ *60 *60 *2, // First keep alive - TCP_KEEPALIVE_PERIOD = TCP_TICK_HZ *60, - TCP_MAX_KEEPALIVE = 8, - TCP_FIN_WAIT2_TIME = 2 *TCP_TICK_HZ, // * 60, - TCP_TIME_WAIT_TIME = 2 *TCP_TICK_HZ, - TCP_PAWS_24DAY = 24 *24 *60 *60 *TCP_TICK_HZ, - TCP_CONNECT_TIME = 75 *TCP_TICK_HZ, - - // - // The header space to be reserved before TCP data to accomodate : - // 60byte IP head + 60byte TCP head + link layer head - // - TCP_MAX_HEAD = 192, - - // - // value ranges for some control option - // - TCP_RCV_BUF_SIZE = 2 *1024 *1024, - TCP_RCV_BUF_SIZE_MIN = 8 *1024, - TCP_SND_BUF_SIZE = 2 *1024 *1024, - TCP_SND_BUF_SIZE_MIN = 8 *1024, - TCP_BACKLOG = 10, - TCP_BACKLOG_MIN = 5, - TCP_MAX_LOSS_MIN = 6, - TCP_CONNECT_TIME_MIN = 60 *TCP_TICK_HZ, - TCP_MAX_KEEPALIVE_MIN = 4, - TCP_KEEPALIVE_IDLE_MAX = TCP_TICK_HZ *60 *60 *4, - TCP_KEEPALIVE_PERIOD_MIN= TCP_TICK_HZ *30, - TCP_FIN_WAIT2_TIME_MAX = 4 *TCP_TICK_HZ, - TCP_TIME_WAIT_TIME_MAX = 60 *TCP_TICK_HZ -}; - -typedef struct _TCP_SEG { - TCP_SEQNO Seq; // Starting sequence number - TCP_SEQNO End; // The sequence of the last byte + 1, - // include SYN/FIN. End-Seq = SEG.LEN - TCP_SEQNO Ack; // ACK fild in the segment - UINT8 Flag; // TCP header flags - UINT16 Urg; // Valid if URG flag is set. - UINT32 Wnd; // TCP window size field -} TCP_SEG; - -typedef struct _TCP_PEER { - UINT32 Ip; // Network byte order - TCP_PORTNO Port; // Network byte order -} TCP_PEER; - -// -// tcp control block, it includes various states -// -struct _TCP_CB { - NET_LIST_ENTRY List; - TCP_CB *Parent; - - SOCKET *Sk; - TCP_PEER LocalEnd; - TCP_PEER RemoteEnd; - - NET_LIST_ENTRY SndQue; // retxmission queue - NET_LIST_ENTRY RcvQue; // reassemble queue - UINT32 CtrlFlag; // control flags, such as NO_NAGLE - INT32 Error; // soft error status,TCP_CONNECT_RESET... - - // - // RFC793 and RFC1122 defined variables - // - UINT8 State; // TCP state, such as SYN_SENT, LISTEN - UINT8 DelayedAck; // number of delayed ACKs - UINT16 HeadSum; // checksum of the fixed parts of pesudo - // header: Src IP, Dst IP, 0, Protocol, - // not include the TCP length. - - TCP_SEQNO Iss; // Initial Sending Sequence - TCP_SEQNO SndUna; // first unacknowledged data - TCP_SEQNO SndNxt; // next data sequence to send. - TCP_SEQNO SndPsh; // Send PUSH point - TCP_SEQNO SndUp; // Send urgent point - UINT32 SndWnd; // Window advertised by the remote peer - UINT32 SndWndMax; // max send window advertised by the peer - TCP_SEQNO SndWl1; // Seq number used for last window update - TCP_SEQNO SndWl2; // ack no of last window update - UINT16 SndMss; // Max send segment size - TCP_SEQNO RcvNxt; // Next sequence no to receive - UINT32 RcvWnd; // Window advertised by the local peer - TCP_SEQNO RcvWl2; // The RcvNxt (or ACK) of last window update. - // It is necessary because of delayed ACK - - TCP_SEQNO RcvUp; // urgent point; - TCP_SEQNO Irs; // Initial Receiving Sequence - UINT16 RcvMss; // Max receive segment size - UINT16 EnabledTimer; // which timer is currently enabled - UINT32 Timer[TCP_TIMER_NUMBER]; // when the timer will expire - INT32 NextExpire; // count down offset for the nearest timer - UINT32 Idle; // How long the connection is in idle - UINT32 ProbeTime; // the time out value for current window prober - - // - // RFC1323 defined variables, about window scale, - // timestamp and PAWS - // - UINT8 SndWndScale; // Wndscale received from the peer - UINT8 RcvWndScale; // Wndscale used to scale local buffer - UINT32 TsRecent; // TsRecent to echo to the remote peer - UINT32 TsRecentAge; // When this TsRecent is updated - - // TCP_SEQNO LastAckSent; - // It isn't necessary to add LastAckSent here, - // since it is the same as RcvWl2 - - // - // RFC2988 defined variables. about RTT measurement - // - TCP_SEQNO RttSeq; // the seq of measured segment now - UINT32 RttMeasure; // currently measured RTT in heart beats - UINT32 SRtt; // Smoothed RTT, scaled by 8 - UINT32 RttVar; // RTT variance, scaled by 8 - UINT32 Rto; // Current RTO, not scaled - - // - // RFC2581, and 3782 variables. - // Congestion control + NewReno fast recovery. - // - UINT32 CWnd; // Sender's congestion window - UINT32 Ssthresh; // Slow start threshold. - TCP_SEQNO Recover; // recover point for NewReno - UINT16 DupAck; // number of duplicate ACKs - UINT8 CongestState; // the current congestion state(RFC3782) - UINT8 LossTimes; // number of retxmit timeouts in a row - TCP_SEQNO LossRecover; // recover point for retxmit - - // - // configuration parameters, for EFI_TCP4_PROTOCOL specification - // - UINT32 KeepAliveIdle; // idle time before sending first probe - UINT32 KeepAlivePeriod; // interval for subsequent keep alive probe - UINT8 MaxKeepAlive; // Maxium keep alive probe times. - UINT8 KeepAliveProbes; // the number of keep alive probe. - UINT16 MaxRexmit; // The maxium number of retxmit before abort - UINT32 FinWait2Timeout; // The FIN_WAIT_2 time out - UINT32 TimeWaitTimeout; // The TIME_WAIT time out - UINT32 ConnectTimeout; - - // - // configuration for tcp provided by user - // - BOOLEAN UseDefaultAddr; - UINT8 TOS; - UINT8 TTL; - EFI_IPv4_ADDRESS SubnetMask; - - // - // pointer reference to Ip used to send pkt - // - IP_IO_IP_INFO *IpInfo; -}; - -extern NET_LIST_ENTRY mTcpRunQue; -extern NET_LIST_ENTRY mTcpListenQue; -extern TCP_SEQNO mTcpGlobalIss; -extern UINT32 mTcpTick; - -// -// TCP_CONNECTED: both ends have synchronized their ISN. -// -#define TCP_CONNECTED(state) ((state) > TCP_SYN_RCVD) - -#define TCP_FIN_RCVD(State) \ - (((State) == TCP_CLOSE_WAIT) || \ - ((State) == TCP_LAST_ACK) || \ - ((State) == TCP_CLOSING) || \ - ((State) == TCP_TIME_WAIT)) - -#define TCP_LOCAL_CLOSED(State) \ - (((State) == TCP_FIN_WAIT_1) || \ - ((State) == TCP_FIN_WAIT_2) || \ - ((State) == TCP_CLOSING) || \ - ((State) == TCP_TIME_WAIT) || \ - ((State) == TCP_LAST_ACK)) - -// -// Get the TCP_SEG point from a net buffer's ProtoData -// -#define TCPSEG_NETBUF(NBuf) ((TCP_SEG *) ((NBuf)->ProtoData)) - -// -// macros to compare sequence no -// -#define TCP_SEQ_LT(SeqA, SeqB) ((INT32) ((SeqA) - (SeqB)) < 0) -#define TCP_SEQ_LEQ(SeqA, SeqB) ((INT32) ((SeqA) - (SeqB)) <= 0) -#define TCP_SEQ_GT(SeqA, SeqB) ((INT32) ((SeqB) - (SeqA)) < 0) -#define TCP_SEQ_GEQ(SeqA, SeqB) ((INT32) ((SeqB) - (SeqA)) <= 0) - -// -// TCP_SEQ_BETWEEN return whether b <= m <= e -// -#define TCP_SEQ_BETWEEN(b, m, e) ((e) - (b) >= (m) - (b)) - -// -// TCP_SUB_SEQ returns Seq1 - Seq2. Make sure Seq1 >= Seq2 -// -#define TCP_SUB_SEQ(Seq1, Seq2) ((UINT32) ((Seq1) - (Seq2))) - -#define TCP_FLG_ON(Value, Flag) ((BOOLEAN) (((Value) & (Flag)) != 0)) -#define TCP_SET_FLG(Value, Flag) ((Value) |= (Flag)) -#define TCP_CLEAR_FLG(Value, Flag) ((Value) &= ~(Flag)) - -// -// test whether two peers are equal -// -#define TCP_PEER_EQUAL(Pa, Pb) \ - (((Pa)->Ip == (Pb)->Ip) && ((Pa)->Port == (Pb)->Port)) - -// -// test whether Pa matches Pb, or Pa is more specific -// than pb. Zero means wildcard. -// -#define TCP_PEER_MATCH(Pa, Pb) \ - ((((Pb)->Ip == 0) || ((Pb)->Ip == (Pa)->Ip)) && \ - (((Pb)->Port == 0) || ((Pb)->Port == (Pa)->Port))) - -#define TCP_TIMER_ON(Flag, Timer) ((Flag) & (1 << (Timer))) -#define TCP_SET_TIMER(Flag, Timer) ((Flag) = (UINT16) ((Flag) | (1 << (Timer)))) -#define TCP_CLEAR_TIMER(Flag, Timer) ((Flag) = (UINT16) ((Flag) & (~(1 << (Timer))))) - -#define TCP_TIME_LT(Ta, Tb) ((INT32) ((Ta) - (Tb)) < 0) -#define TCP_TIME_LEQ(Ta, Tb) ((INT32) ((Ta) - (Tb)) <= 0) -#define TCP_SUB_TIME(Ta, Tb) ((UINT32) ((Ta) - (Tb))) - -#define TCP_MAX_WIN 0xFFFFU - -typedef -VOID -(*TCP_TIMER_HANDLER) ( - IN TCP_CB * Tcb - ); - -#include "Tcp4Func.h" -#endif +/** @file
+
+Copyright (c) 2005 - 2006, 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.
+
+Module Name:
+
+ Tcp4Proto.h
+
+Abstract:
+
+
+**/
+
+#ifndef _TCP4_PROTO_H_
+#define _TCP4_PROTO_H_
+
+typedef struct _TCP_CB TCP_CB;
+
+#include "Tcp4Driver.h"
+#include "Socket.h"
+#include "Tcp4Option.h"
+
+//
+// tcp states, Don't change their order, it is used as
+// index to mTcpOutFlag and other macros
+//
+enum {
+ TCP_CLOSED = 0,
+ TCP_LISTEN,
+ TCP_SYN_SENT,
+ TCP_SYN_RCVD,
+ TCP_ESTABLISHED,
+ TCP_FIN_WAIT_1,
+ TCP_FIN_WAIT_2,
+ TCP_CLOSING,
+ TCP_TIME_WAIT,
+ TCP_CLOSE_WAIT,
+ TCP_LAST_ACK
+};
+
+//
+// flags in the TCP header
+//
+enum {
+
+ TCP_FLG_FIN = 0x01,
+ TCP_FLG_SYN = 0x02,
+ TCP_FLG_RST = 0x04,
+ TCP_FLG_PSH = 0x08,
+ TCP_FLG_ACK = 0x10,
+ TCP_FLG_URG = 0x20,
+ TCP_FLG_FLAG = 0x3F // mask for all the flags
+};
+
+enum {
+
+ //
+ // TCP error status
+ //
+ TCP_CONNECT_REFUSED = -1,
+ TCP_CONNECT_RESET = -2,
+ TCP_CONNECT_CLOSED = -3,
+
+ //
+ // Current congestion status as suggested by RFC3782.
+ //
+ TCP_CONGEST_RECOVER = 1, // during the NewReno fast recovery
+ TCP_CONGEST_LOSS = 2, // retxmit because of retxmit time out
+ TCP_CONGEST_OPEN = 3, // TCP is opening its congestion window
+
+ //
+ // TCP control flags
+ //
+ TCP_CTRL_NO_NAGLE = 0x0001, // disable Nagle algorithm
+ TCP_CTRL_NO_KEEPALIVE = 0x0002, // disable keepalive timer
+ TCP_CTRL_NO_WS = 0x0004, // disable window scale option
+ TCP_CTRL_RCVD_WS = 0x0008, // rcvd a wnd scale option in syn
+ TCP_CTRL_NO_TS = 0x0010, // disable Timestamp option
+ TCP_CTRL_RCVD_TS = 0x0020, // rcvd a Timestamp option in syn
+ TCP_CTRL_SND_TS = 0x0040, // Send Timestamp option to remote
+ TCP_CTRL_SND_URG = 0x0080, // in urgent send mode
+ TCP_CTRL_RCVD_URG = 0x0100, // in urgent receive mode
+ TCP_CTRL_SND_PSH = 0x0200, // in PUSH send mode
+ TCP_CTRL_FIN_SENT = 0x0400, // FIN is sent
+ TCP_CTRL_FIN_ACKED = 0x0800, // FIN is ACKed.
+ TCP_CTRL_TIMER_ON = 0x1000, // At least one of the timer is on
+ TCP_CTRL_RTT_ON = 0x2000, // The RTT measurement is on
+ TCP_CTRL_ACK_NOW = 0x4000, // Send the ACK now, don't delay
+
+ //
+ // Timer related values
+ //
+ TCP_TIMER_CONNECT = 0, // Connection establishment timer
+ TCP_TIMER_REXMIT = 1, // retransmit timer
+ TCP_TIMER_PROBE = 2, // Window probe timer
+ TCP_TIMER_KEEPALIVE = 3, // Keepalive timer
+ TCP_TIMER_FINWAIT2 = 4, // FIN_WAIT_2 timer
+ TCP_TIMER_2MSL = 5, // TIME_WAIT tiemr
+ TCP_TIMER_NUMBER = 6, // the total number of TCP timer.
+ TCP_TICK = 200, // every TCP tick is 200ms
+ TCP_TICK_HZ = 5, // the frequence of TCP tick
+ TCP_RTT_SHIFT = 3, // SRTT & RTTVAR scaled by 8
+ TCP_RTO_MIN = TCP_TICK_HZ, // the minium value of RTO
+ TCP_RTO_MAX = TCP_TICK_HZ *60, // the maxium value of RTO
+ TCP_FOLD_RTT = 4, // timeout threshod to fold RTT
+
+ //
+ // default values for some timers
+ //
+ TCP_MAX_LOSS = 12, // default max times to retxmit
+ TCP_KEEPALIVE_IDLE_MIN = TCP_TICK_HZ *60 *60 *2, // First keep alive
+ TCP_KEEPALIVE_PERIOD = TCP_TICK_HZ *60,
+ TCP_MAX_KEEPALIVE = 8,
+ TCP_FIN_WAIT2_TIME = 2 *TCP_TICK_HZ, // * 60,
+ TCP_TIME_WAIT_TIME = 2 *TCP_TICK_HZ,
+ TCP_PAWS_24DAY = 24 *24 *60 *60 *TCP_TICK_HZ,
+ TCP_CONNECT_TIME = 75 *TCP_TICK_HZ,
+
+ //
+ // The header space to be reserved before TCP data to accomodate :
+ // 60byte IP head + 60byte TCP head + link layer head
+ //
+ TCP_MAX_HEAD = 192,
+
+ //
+ // value ranges for some control option
+ //
+ TCP_RCV_BUF_SIZE = 2 *1024 *1024,
+ TCP_RCV_BUF_SIZE_MIN = 8 *1024,
+ TCP_SND_BUF_SIZE = 2 *1024 *1024,
+ TCP_SND_BUF_SIZE_MIN = 8 *1024,
+ TCP_BACKLOG = 10,
+ TCP_BACKLOG_MIN = 5,
+ TCP_MAX_LOSS_MIN = 6,
+ TCP_CONNECT_TIME_MIN = 60 *TCP_TICK_HZ,
+ TCP_MAX_KEEPALIVE_MIN = 4,
+ TCP_KEEPALIVE_IDLE_MAX = TCP_TICK_HZ *60 *60 *4,
+ TCP_KEEPALIVE_PERIOD_MIN= TCP_TICK_HZ *30,
+ TCP_FIN_WAIT2_TIME_MAX = 4 *TCP_TICK_HZ,
+ TCP_TIME_WAIT_TIME_MAX = 60 *TCP_TICK_HZ
+};
+
+typedef struct _TCP_SEG {
+ TCP_SEQNO Seq; // Starting sequence number
+ TCP_SEQNO End; // The sequence of the last byte + 1,
+ // include SYN/FIN. End-Seq = SEG.LEN
+ TCP_SEQNO Ack; // ACK fild in the segment
+ UINT8 Flag; // TCP header flags
+ UINT16 Urg; // Valid if URG flag is set.
+ UINT32 Wnd; // TCP window size field
+} TCP_SEG;
+
+typedef struct _TCP_PEER {
+ UINT32 Ip; // Network byte order
+ TCP_PORTNO Port; // Network byte order
+} TCP_PEER;
+
+//
+// tcp control block, it includes various states
+//
+struct _TCP_CB {
+ NET_LIST_ENTRY List;
+ TCP_CB *Parent;
+
+ SOCKET *Sk;
+ TCP_PEER LocalEnd;
+ TCP_PEER RemoteEnd;
+
+ NET_LIST_ENTRY SndQue; // retxmission queue
+ NET_LIST_ENTRY RcvQue; // reassemble queue
+ UINT32 CtrlFlag; // control flags, such as NO_NAGLE
+ INT32 Error; // soft error status,TCP_CONNECT_RESET...
+
+ //
+ // RFC793 and RFC1122 defined variables
+ //
+ UINT8 State; // TCP state, such as SYN_SENT, LISTEN
+ UINT8 DelayedAck; // number of delayed ACKs
+ UINT16 HeadSum; // checksum of the fixed parts of pesudo
+ // header: Src IP, Dst IP, 0, Protocol,
+ // not include the TCP length.
+
+ TCP_SEQNO Iss; // Initial Sending Sequence
+ TCP_SEQNO SndUna; // first unacknowledged data
+ TCP_SEQNO SndNxt; // next data sequence to send.
+ TCP_SEQNO SndPsh; // Send PUSH point
+ TCP_SEQNO SndUp; // Send urgent point
+ UINT32 SndWnd; // Window advertised by the remote peer
+ UINT32 SndWndMax; // max send window advertised by the peer
+ TCP_SEQNO SndWl1; // Seq number used for last window update
+ TCP_SEQNO SndWl2; // ack no of last window update
+ UINT16 SndMss; // Max send segment size
+ TCP_SEQNO RcvNxt; // Next sequence no to receive
+ UINT32 RcvWnd; // Window advertised by the local peer
+ TCP_SEQNO RcvWl2; // The RcvNxt (or ACK) of last window update.
+ // It is necessary because of delayed ACK
+
+ TCP_SEQNO RcvUp; // urgent point;
+ TCP_SEQNO Irs; // Initial Receiving Sequence
+ UINT16 RcvMss; // Max receive segment size
+ UINT16 EnabledTimer; // which timer is currently enabled
+ UINT32 Timer[TCP_TIMER_NUMBER]; // when the timer will expire
+ INT32 NextExpire; // count down offset for the nearest timer
+ UINT32 Idle; // How long the connection is in idle
+ UINT32 ProbeTime; // the time out value for current window prober
+
+ //
+ // RFC1323 defined variables, about window scale,
+ // timestamp and PAWS
+ //
+ UINT8 SndWndScale; // Wndscale received from the peer
+ UINT8 RcvWndScale; // Wndscale used to scale local buffer
+ UINT32 TsRecent; // TsRecent to echo to the remote peer
+ UINT32 TsRecentAge; // When this TsRecent is updated
+
+ // TCP_SEQNO LastAckSent;
+ // It isn't necessary to add LastAckSent here,
+ // since it is the same as RcvWl2
+
+ //
+ // RFC2988 defined variables. about RTT measurement
+ //
+ TCP_SEQNO RttSeq; // the seq of measured segment now
+ UINT32 RttMeasure; // currently measured RTT in heart beats
+ UINT32 SRtt; // Smoothed RTT, scaled by 8
+ UINT32 RttVar; // RTT variance, scaled by 8
+ UINT32 Rto; // Current RTO, not scaled
+
+ //
+ // RFC2581, and 3782 variables.
+ // Congestion control + NewReno fast recovery.
+ //
+ UINT32 CWnd; // Sender's congestion window
+ UINT32 Ssthresh; // Slow start threshold.
+ TCP_SEQNO Recover; // recover point for NewReno
+ UINT16 DupAck; // number of duplicate ACKs
+ UINT8 CongestState; // the current congestion state(RFC3782)
+ UINT8 LossTimes; // number of retxmit timeouts in a row
+ TCP_SEQNO LossRecover; // recover point for retxmit
+
+ //
+ // configuration parameters, for EFI_TCP4_PROTOCOL specification
+ //
+ UINT32 KeepAliveIdle; // idle time before sending first probe
+ UINT32 KeepAlivePeriod; // interval for subsequent keep alive probe
+ UINT8 MaxKeepAlive; // Maxium keep alive probe times.
+ UINT8 KeepAliveProbes; // the number of keep alive probe.
+ UINT16 MaxRexmit; // The maxium number of retxmit before abort
+ UINT32 FinWait2Timeout; // The FIN_WAIT_2 time out
+ UINT32 TimeWaitTimeout; // The TIME_WAIT time out
+ UINT32 ConnectTimeout;
+
+ //
+ // configuration for tcp provided by user
+ //
+ BOOLEAN UseDefaultAddr;
+ UINT8 TOS;
+ UINT8 TTL;
+ EFI_IPv4_ADDRESS SubnetMask;
+
+ //
+ // pointer reference to Ip used to send pkt
+ //
+ IP_IO_IP_INFO *IpInfo;
+};
+
+extern NET_LIST_ENTRY mTcpRunQue;
+extern NET_LIST_ENTRY mTcpListenQue;
+extern TCP_SEQNO mTcpGlobalIss;
+extern UINT32 mTcpTick;
+
+//
+// TCP_CONNECTED: both ends have synchronized their ISN.
+//
+#define TCP_CONNECTED(state) ((state) > TCP_SYN_RCVD)
+
+#define TCP_FIN_RCVD(State) \
+ (((State) == TCP_CLOSE_WAIT) || \
+ ((State) == TCP_LAST_ACK) || \
+ ((State) == TCP_CLOSING) || \
+ ((State) == TCP_TIME_WAIT))
+
+#define TCP_LOCAL_CLOSED(State) \
+ (((State) == TCP_FIN_WAIT_1) || \
+ ((State) == TCP_FIN_WAIT_2) || \
+ ((State) == TCP_CLOSING) || \
+ ((State) == TCP_TIME_WAIT) || \
+ ((State) == TCP_LAST_ACK))
+
+//
+// Get the TCP_SEG point from a net buffer's ProtoData
+//
+#define TCPSEG_NETBUF(NBuf) ((TCP_SEG *) ((NBuf)->ProtoData))
+
+//
+// macros to compare sequence no
+//
+#define TCP_SEQ_LT(SeqA, SeqB) ((INT32) ((SeqA) - (SeqB)) < 0)
+#define TCP_SEQ_LEQ(SeqA, SeqB) ((INT32) ((SeqA) - (SeqB)) <= 0)
+#define TCP_SEQ_GT(SeqA, SeqB) ((INT32) ((SeqB) - (SeqA)) < 0)
+#define TCP_SEQ_GEQ(SeqA, SeqB) ((INT32) ((SeqB) - (SeqA)) <= 0)
+
+//
+// TCP_SEQ_BETWEEN return whether b <= m <= e
+//
+#define TCP_SEQ_BETWEEN(b, m, e) ((e) - (b) >= (m) - (b))
+
+//
+// TCP_SUB_SEQ returns Seq1 - Seq2. Make sure Seq1 >= Seq2
+//
+#define TCP_SUB_SEQ(Seq1, Seq2) ((UINT32) ((Seq1) - (Seq2)))
+
+#define TCP_FLG_ON(Value, Flag) ((BOOLEAN) (((Value) & (Flag)) != 0))
+#define TCP_SET_FLG(Value, Flag) ((Value) |= (Flag))
+#define TCP_CLEAR_FLG(Value, Flag) ((Value) &= ~(Flag))
+
+//
+// test whether two peers are equal
+//
+#define TCP_PEER_EQUAL(Pa, Pb) \
+ (((Pa)->Ip == (Pb)->Ip) && ((Pa)->Port == (Pb)->Port))
+
+//
+// test whether Pa matches Pb, or Pa is more specific
+// than pb. Zero means wildcard.
+//
+#define TCP_PEER_MATCH(Pa, Pb) \
+ ((((Pb)->Ip == 0) || ((Pb)->Ip == (Pa)->Ip)) && \
+ (((Pb)->Port == 0) || ((Pb)->Port == (Pa)->Port)))
+
+#define TCP_TIMER_ON(Flag, Timer) ((Flag) & (1 << (Timer)))
+#define TCP_SET_TIMER(Flag, Timer) ((Flag) = (UINT16) ((Flag) | (1 << (Timer))))
+#define TCP_CLEAR_TIMER(Flag, Timer) ((Flag) = (UINT16) ((Flag) & (~(1 << (Timer)))))
+
+#define TCP_TIME_LT(Ta, Tb) ((INT32) ((Ta) - (Tb)) < 0)
+#define TCP_TIME_LEQ(Ta, Tb) ((INT32) ((Ta) - (Tb)) <= 0)
+#define TCP_SUB_TIME(Ta, Tb) ((UINT32) ((Ta) - (Tb)))
+
+#define TCP_MAX_WIN 0xFFFFU
+
+typedef
+VOID
+(*TCP_TIMER_HANDLER) (
+ IN TCP_CB * Tcb
+ );
+
+#include "Tcp4Func.h"
+#endif
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