Merge in T/TCP TCP header file changes.
This commit is contained in:
Garrett Wollman
parent
b185266a8a
commit
eb6ad69646
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=6247
@ -31,13 +31,17 @@
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* SUCH DAMAGE.
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*
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* @(#)tcp.h 8.1 (Berkeley) 6/10/93
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* $Id: tcp.h,v 1.2 1994/08/02 07:48:52 davidg Exp $
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* $Id: tcp.h,v 1.3 1994/08/21 05:27:34 paul Exp $
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*/
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#ifndef _NETINET_TCP_H_
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#define _NETINET_TCP_H_
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typedef u_long tcp_seq;
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#ifdef TTCP
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typedef u_long tcp_cc; /* connection count per rfc1644 */
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#endif
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/*
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* TCP header.
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* Per RFC 793, September, 1981.
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@ -62,6 +66,9 @@ struct tcphdr {
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#define TH_PUSH 0x08
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#define TH_ACK 0x10
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#define TH_URG 0x20
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#ifdef TTCP
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#define TH_FLAGS (TH_FIN|TH_SYN|TH_RST|TH_ACK|TH_URG)
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#endif
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u_short th_win; /* window */
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u_short th_sum; /* checksum */
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u_short th_urp; /* urgent pointer */
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@ -79,10 +86,19 @@ struct tcphdr {
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#define TCPOPT_TIMESTAMP 8
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#define TCPOLEN_TIMESTAMP 10
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#define TCPOLEN_TSTAMP_APPA (TCPOLEN_TIMESTAMP+2) /* appendix A */
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#define TCPOPT_TSTAMP_HDR \
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#define TCPOPT_TSTAMP_HDR \
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(TCPOPT_NOP<<24|TCPOPT_NOP<<16|TCPOPT_TIMESTAMP<<8|TCPOLEN_TIMESTAMP)
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#ifdef TTCP
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#define TCPOPT_CC 11 /* CC options: RFC-1644 */
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#define TCPOPT_CCNEW 12
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#define TCPOPT_CCECHO 13
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#define TCPOLEN_CC 6
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#define TCPOLEN_CC_APPA (TCPOLEN_CC+2)
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#define TCPOPT_CC_HDR(ccopt) \
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(TCPOPT_NOP<<24|TCPOPT_NOP<<16|(ccopt)<<8|TCPOLEN_CC)
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#endif
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/*
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* Default maximum segment size for TCP.
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* With an IP MSS of 576, this is 536,
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@ -92,13 +108,24 @@ struct tcphdr {
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#define TCP_MSS 512
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#define TCP_MAXWIN 65535 /* largest value for (unscaled) window */
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#ifdef TTCP
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#define TTCP_CLIENT_SND_WND 4096 /* dflt send window for T/TCP client */
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#endif
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#define TCP_MAX_WINSHIFT 14 /* maximum window shift */
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#define TCP_MAXHLEN (0xf<<2) /* max length of header in bytes */
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#define TCP_MAXOLEN (TCP_MAXHLEN - sizeof(struct tcphdr))
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/* max space left for options */
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/*
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* User-settable options (used with setsockopt).
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*/
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#define TCP_NODELAY 0x01 /* don't delay send to coalesce packets */
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#define TCP_MAXSEG 0x02 /* set maximum segment size */
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#ifdef TTCP
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#define TCP_NOPUSH 0x04 /* don't push last block of write */
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#define TCP_NOOPT 0x08 /* don't use TCP options */
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#endif
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#endif
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@ -31,7 +31,7 @@
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* SUCH DAMAGE.
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*
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* @(#)tcp_seq.h 8.1 (Berkeley) 6/10/93
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* $Id: tcp_seq.h,v 1.2 1994/08/02 07:49:06 davidg Exp $
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* $Id: tcp_seq.h,v 1.3 1994/08/21 05:27:37 paul Exp $
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*/
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#ifndef _NETINET_TCP_SEQ_H_
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@ -46,6 +46,25 @@
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#define SEQ_GT(a,b) ((int)((a)-(b)) > 0)
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#define SEQ_GEQ(a,b) ((int)((a)-(b)) >= 0)
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/* for modulo comparisons of timestamps */
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#define TSTMP_LT(a,b) ((int)((a)-(b)) < 0)
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#define TSTMP_GEQ(a,b) ((int)((a)-(b)) >= 0)
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#ifdef TTCP
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/*
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* TCP connection counts are 32 bit integers operated
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* on with modular arithmetic. These macros can be
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* used to compare such integers.
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*/
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#define CC_LT(a,b) ((int)((a)-(b)) < 0)
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#define CC_LEQ(a,b) ((int)((a)-(b)) <= 0)
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#define CC_GT(a,b) ((int)((a)-(b)) > 0)
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#define CC_GEQ(a,b) ((int)((a)-(b)) >= 0)
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/* Macro to increment a CC: skip 0 which has a special meaning */
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#define CC_INC(c) (++(c) == 0 ? ++(c) : (c))
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#endif
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/*
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* Macros to initialize tcp sequence numbers for
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* send and receive from initial send and receive
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@ -60,7 +79,13 @@
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#define TCP_ISSINCR (125*1024) /* increment for tcp_iss each second */
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#define TCP_PAWS_IDLE (24 * 24 * 60 * 60 * PR_SLOWHZ)
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/* timestamp wrap-around time */
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#ifdef KERNEL
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tcp_seq tcp_iss; /* tcp initial send seq # */
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#ifdef TTCP
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tcp_cc tcp_ccgen; /* global connection count */
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#endif
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#endif
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#endif
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@ -31,7 +31,7 @@
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* SUCH DAMAGE.
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*
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* @(#)tcp_timer.h 8.1 (Berkeley) 6/10/93
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* $Id: tcp_timer.h,v 1.3 1994/08/02 07:49:12 davidg Exp $
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* $Id: tcp_timer.h,v 1.4 1994/08/21 05:27:38 paul Exp $
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*/
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#ifndef _NETINET_TCP_TIMER_H_
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@ -103,6 +103,10 @@
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#define TCPTV_MIN ( 1*PR_SLOWHZ) /* minimum allowable value */
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#define TCPTV_REXMTMAX ( 64*PR_SLOWHZ) /* max allowable REXMT value */
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#ifdef TTCP
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#define TCPTV_TWTRUNC 8 /* RTO factor to truncate TW */
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#endif
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#define TCP_LINGERTIME 120 /* linger at most 2 minutes */
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#define TCP_MAXRXTSHIFT 12 /* maximum retransmits */
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@ -31,7 +31,7 @@
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* SUCH DAMAGE.
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*
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* @(#)tcp_var.h 8.3 (Berkeley) 4/10/94
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* $Id: tcp_var.h,v 1.2 1994/08/02 07:49:17 davidg Exp $
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* $Id: tcp_var.h,v 1.3 1994/08/21 05:27:39 paul Exp $
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*/
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#ifndef _NETINET_TCP_VAR_H_
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@ -52,6 +52,7 @@ struct tcpcb {
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short t_rxtcur; /* current retransmit value */
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short t_dupacks; /* consecutive dup acks recd */
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u_short t_maxseg; /* maximum segment size */
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u_short t_maxopd; /* mss plus options */
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char t_force; /* 1 if forcing out a byte */
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u_short t_flags;
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#define TF_ACKNOW 0x0001 /* ack peer immediately */
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@ -64,6 +65,13 @@ struct tcpcb {
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#define TF_REQ_TSTMP 0x0080 /* have/will request timestamps */
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#define TF_RCVD_TSTMP 0x0100 /* a timestamp was received in SYN */
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#define TF_SACK_PERMIT 0x0200 /* other side said I could SACK */
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#ifdef TTCP
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#define TF_NEEDSYN 0x0400 /* send SYN (implicit state) */
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#define TF_NEEDFIN 0x0800 /* send FIN (implicit state) */
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#define TF_NOPUSH 0x1000 /* don't push */
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#define TF_REQ_CC 0x2000 /* have/will request CC */
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#define TF_RCVD_CC 0x4000 /* a CC was received in SYN */
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#endif
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struct tcpiphdr *t_template; /* skeletal packet for transmit */
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struct inpcb *t_inpcb; /* back pointer to internet pcb */
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@ -126,11 +134,54 @@ struct tcpcb {
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u_long ts_recent; /* timestamp echo data */
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u_long ts_recent_age; /* when last updated */
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tcp_seq last_ack_sent;
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#ifdef TTCP
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/* RFC 1644 variables */
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tcp_cc cc_send; /* send connection count */
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tcp_cc cc_recv; /* receive connection count */
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u_long t_duration; /* connection duration */
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#endif /* TTCP */
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/* TUBA stuff */
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caddr_t t_tuba_pcb; /* next level down pcb for TCP over z */
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};
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#ifdef TTCP
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/*
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* Structure to hold TCP options that are only used during segment
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* processing (in tcp_input), but not held in the tcpcb.
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* It's basically used to reduce the number of parameters
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* to tcp_dooptions.
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*/
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struct tcpopt {
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u_long to_flag; /* which options are present */
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#define TOF_TS 0x0001 /* timestamp */
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#define TOF_CC 0x0002 /* CC and CCnew are exclusive */
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#define TOF_CCNEW 0x0004
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#define TOF_CCECHO 0x0008
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u_long to_tsval;
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u_long to_tsecr;
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tcp_cc to_cc; /* holds CC or CCnew */
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tcp_cc to_ccecho;
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};
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/*
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* The TAO cache entry which is stored in the protocol family specific
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* portion of the route metrics.
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*/
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struct rmxp_tao {
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tcp_cc tao_cc; /* latest CC in valid SYN */
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tcp_cc tao_ccsent; /* latest CC sent to peer */
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u_short tao_mssopt; /* peer's cached MSS */
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#ifdef notyet
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u_short tao_flags; /* cache status flags */
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#define TAOF_DONT 0x0001 /* peer doesn't understand rfc1644 */
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#define TAOF_OK 0x0002 /* peer does understand rfc1644 */
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#define TAOF_UNDEF 0 /* we don't know yet */
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#endif /* notyet */
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};
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#define rmx_taop(r) ((struct rmxp_tao *)&(r).rmx_pspec)
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#endif /* TTCP */
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#define intotcpcb(ip) ((struct tcpcb *)(ip)->inp_ppcb)
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#define sototcpcb(so) (intotcpcb(sotoinpcb(so)))
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@ -146,7 +197,7 @@ struct tcpcb {
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#define TCP_RTT_SCALE 8 /* multiplier for srtt; 3 bits frac. */
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#define TCP_RTT_SHIFT 3 /* shift for srtt; 3 bits frac. */
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#define TCP_RTTVAR_SCALE 4 /* multiplier for rttvar; 2 bits */
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#define TCP_RTTVAR_SHIFT 2 /* multiplier for rttvar; 2 bits */
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#define TCP_RTTVAR_SHIFT 2 /* shift for rttvar; 2 bits */
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/*
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* The initial retransmission should happen at rtt + 4 * rttvar.
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@ -234,6 +285,21 @@ struct tcpstat {
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u_long tcps_pcbcachemiss;
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};
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/*
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* Names for TCP sysctl objects
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*/
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#define TCPCTL_DO_RFC1323 1 /* use RFC-1323 extensions */
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#define TCPCTL_DO_RFC1644 2 /* use RFC-1644 extensions */
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#define TCPCTL_MSSDFLT 3 /* MSS default */
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#define TCPCTL_MAXID 4
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#define TCPCTL_NAMES { \
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{ 0, 0 }, \
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{ "do_rfc1323", CTLTYPE_INT }, \
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{ "do_rfc1644", CTLTYPE_INT }, \
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{ "mssdflt", CTLTYPE_INT }, \
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}
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#ifdef KERNEL
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struct inpcb tcb; /* head of queue of active tcpcb's */
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struct tcpstat tcpstat; /* tcp statistics */
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@ -243,19 +309,32 @@ int tcp_attach __P((struct socket *));
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void tcp_canceltimers __P((struct tcpcb *));
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struct tcpcb *
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tcp_close __P((struct tcpcb *));
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#ifdef TTCP
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int tcp_connect __P((struct tcpcb *, struct mbuf *));
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#endif
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void tcp_ctlinput __P((int, struct sockaddr *, struct ip *));
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int tcp_ctloutput __P((int, struct socket *, int, int, struct mbuf **));
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struct tcpcb *
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tcp_disconnect __P((struct tcpcb *));
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struct tcpcb *
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tcp_drop __P((struct tcpcb *, int));
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#ifdef TTCP
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void tcp_dooptions __P((struct tcpcb *,
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u_char *, int, struct tcpiphdr *, struct tcpopt *));
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#else
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void tcp_dooptions __P((struct tcpcb *,
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u_char *, int, struct tcpiphdr *, int *, u_long *, u_long *));
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#endif
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void tcp_drain __P((void));
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void tcp_fasttimo __P((void));
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#ifdef TTCP
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struct rmxp_tao *
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tcp_gettaocache __P((struct inpcb *));
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#endif
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void tcp_init __P((void));
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void tcp_input __P((struct mbuf *, int));
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int tcp_mss __P((struct tcpcb *, u_int));
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void tcp_mss __P((struct tcpcb *, int));
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int tcp_mssopt __P((struct tcpcb *));
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struct tcpcb *
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tcp_newtcpcb __P((struct inpcb *));
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void tcp_notify __P((struct inpcb *, int));
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@ -266,8 +345,11 @@ void tcp_quench __P((struct inpcb *, int));
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int tcp_reass __P((struct tcpcb *, struct tcpiphdr *, struct mbuf *));
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void tcp_respond __P((struct tcpcb *,
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struct tcpiphdr *, struct mbuf *, u_long, u_long, int));
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struct rtentry *
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tcp_rtlookup __P((struct inpcb *));
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void tcp_setpersist __P((struct tcpcb *));
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void tcp_slowtimo __P((void));
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int tcp_sysctl __P((int *, u_int, void *, size_t *, void *, size_t));
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struct tcpiphdr *
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tcp_template __P((struct tcpcb *));
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struct tcpcb *
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@ -31,7 +31,7 @@
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* SUCH DAMAGE.
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*
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* @(#)tcpip.h 8.1 (Berkeley) 6/10/93
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* $Id: tcpip.h,v 1.2 1994/08/02 07:49:19 davidg Exp $
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* $Id: tcpip.h,v 1.3 1994/08/21 05:27:40 paul Exp $
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*/
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#ifndef _NETINET_TCPIP_H_
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@ -44,6 +44,16 @@ struct tcpiphdr {
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struct ipovly ti_i; /* overlaid ip structure */
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struct tcphdr ti_t; /* tcp header */
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};
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#ifdef notyet
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/*
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* Tcp+ip header, after ip options removed but including TCP options.
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*/
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struct full_tcpiphdr {
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struct ipovly ti_i; /* overlaid ip structure */
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struct tcphdr ti_t; /* tcp header */
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char ti_o[TCP_MAXOLEN]; /* space for tcp options */
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};
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#endif /* notyet */
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#define ti_next ti_i.ih_next
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#define ti_prev ti_i.ih_prev
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#define ti_x1 ti_i.ih_x1
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