X-Git-Url: https://git.subgeniuskitty.com/unix-history/.git/blobdiff_plain/0e3936fa156472eec05d3e23e0d3e566709cc05d..99d13dad0a8ca5c57c42f01db01b7f1b2535f24b:/usr/src/sys/netinet/tcp_var.h

diff --git a/usr/src/sys/netinet/tcp_var.h b/usr/src/sys/netinet/tcp_var.h
index a1ce743dfb..df5420639d 100644
--- a/usr/src/sys/netinet/tcp_var.h
+++ b/usr/src/sys/netinet/tcp_var.h
@@ -1,4 +1,10 @@
-/*	tcp_var.h	4.18	83/01/17	*/
+/*
+ * Copyright (c) 1982 Regents of the University of California.
+ * All rights reserved.  The Berkeley software License Agreement
+ * specifies the terms and conditions for redistribution.
+ *
+ *	@(#)tcp_var.h	6.6 (Berkeley) %G%
+ */
 
 /*
  * Kernel variables for tcp.
@@ -14,14 +20,13 @@ struct tcpcb {
 	short	t_timer[TCPT_NTIMERS];	/* tcp timers */
 	short	t_rxtshift;		/* log(2) of rexmt exp. backoff */
 	struct	mbuf *t_tcpopt;		/* tcp options */
-	struct	mbuf *t_ipopt;		/* ip options */
 	short	t_maxseg;		/* maximum segment size */
 	char	t_force;		/* 1 if forcing out a byte */
 	u_char	t_flags;
-#define	TF_ACKNOW	0x01			/* ack peer immediately */
-#define	TF_DELACK	0x02			/* ack, but try to delay it */
-#define	TF_DONTKEEP	0x04			/* don't use keep-alives */
-#define	TF_NOOPT	0x08			/* don't use tcp options */
+#define	TF_ACKNOW	0x01		/* ack peer immediately */
+#define	TF_DELACK	0x02		/* ack, but try to delay it */
+#define	TF_NODELAY	0x04		/* don't delay packets to coalesce */
+#define	TF_NOOPT	0x08		/* don't use tcp options */
 	struct	tcpiphdr *t_template;	/* skeletal packet for transmit */
 	struct	inpcb *t_inpcb;		/* back pointer to internet pcb */
 /*
@@ -37,7 +42,7 @@ struct tcpcb {
 	tcp_seq	iss;			/* initial send sequence number */
 	u_short	snd_wnd;		/* send window */
 /* receive sequence variables */
-	short	rcv_wnd;		/* receive window */
+	u_short	rcv_wnd;		/* receive window */
 	tcp_seq	rcv_nxt;		/* receive next */
 	tcp_seq	rcv_up;			/* receive urgent pointer */
 	tcp_seq	irs;			/* initial receive sequence number */
@@ -48,16 +53,22 @@ struct tcpcb {
 	tcp_seq	rcv_adv;		/* advertised window */
 /* retransmit variables */
 	tcp_seq	snd_max;		/* highest sequence number sent
-					   used to recognize retransmits */
+					 * used to recognize retransmits
+					 */
+/* congestion control (for source quench) */
+	u_short	snd_cwnd;		/* congestion-controlled window */
 /* transmit timing stuff */
 	short	t_idle;			/* inactivity time */
 	short	t_rtt;			/* round trip time */
+	u_short max_rcvd;		/* most peer has sent into window */
 	tcp_seq	t_rtseq;		/* sequence number being timed */
 	float	t_srtt;			/* smoothed round-trip time */
+	u_short	max_sndwnd;		/* largest window peer has offered */
 /* out-of-band data */
 	char	t_oobflags;		/* have some */
 	char	t_iobc;			/* input character */
 #define	TCPOOB_HAVEDATA	0x01
+#define	TCPOOB_HADDATA	0x02
 };
 
 #define	intotcpcb(ip)	((struct tcpcb *)(ip)->inp_ppcb)