2001/0530/ip/tcp.c (diff list | history)

2001/0527/sys/src/9/ip/tcp.c:20,26 – 2001/0530/sys/src/9/ip/tcp.c:20,26 (short | long | prev | next)
1997/0327		TimerON = 1, TimerDONE = 2, MAX_TIME = (1<<20), /* Forever */
1998/1008		TCP_ACK = 50, /* Timed ack sequence in ms */
2001/0530		TCP_ACK = 200, /* Timed ack sequence in ms */
1997/0327		URG = 0x20, /* Data marked urgent */ ACK = 0x10, /* Acknowledge is valid */
2001/0527/sys/src/9/ip/tcp.c:270,275 – 2001/0530/sys/src/9/ip/tcp.c:270,276
1999/0320		void tcpkeepalive(void*);
1999/0529		void tcpsetkacounter(Tcpctl*);
2000/0102		void tcprxmit(Conv*);
2001/0530		void tcpsettimer(Tcpctl*);
1997/0327		void
1998/0306		tcpsetstate(Conv *s, uchar newstate)
2001/0527/sys/src/9/ip/tcp.c:1206,1211 – 2001/0530/sys/src/9/ip/tcp.c:1207,1213
1997/0327		if(tcb->mdev <= 0) tcb->mdev = 1; }
2001/0530		tcpsettimer(tcb);
1997/0327		} }
2001/0527/sys/src/9/ip/tcp.c:1637,1643 – 2001/0530/sys/src/9/ip/tcp.c:1639,1644
1997/0327		void tcpoutput(Conv *s) { int x; Tcp seg; int msgs; Tcpctl *tcb;
2001/0527/sys/src/9/ip/tcp.c:1787,1805 – 2001/0530/sys/src/9/ip/tcp.c:1788,1793
1997/0327		* expect acknowledges */ if(ssize != 0){
1998/0918		/* round trip depenency */
1997/0327		x = backoff(tcb->backoff) * (tcb->mdev + (tcb->srtt>>LOGAGAIN) + MSPTICK) / MSPTICK;
2000/1012
1998/0918		/* take into account delayed ack */ if(sent <= 2*tcb->mss) x += TCP_ACK/MSPTICK;                  /* sanity check */
1997/0327		if(x > (10000/MSPTICK)) x = 10000/MSPTICK; tcb->timer.start = x;                  if(tcb->timer.state != TimerON)
1998/0313		tcpgo(tpriv, &tcb->timer);
1997/0327
2001/0527/sys/src/9/ip/tcp.c:1991,1996 – 2001/0530/sys/src/9/ip/tcp.c:1979,1985
1997/0327		localclose(s, Etimedout); break; }
2001/0530		tcpsettimer(tcb);
2001/0118		netlog(s->p->f, Logtcp, "timeout rexmit 0x%lux\n", tcb->snd.una);
2000/0102		tcprxmit(s);
2000/0706		tpriv->stats[RetransTimeouts]++;
2001/0527/sys/src/9/ip/tcp.c:2285,2290 – 2001/0530/sys/src/9/ip/tcp.c:2274,2298
2000/0424		qunlock(c); } return n;
2001/0530		} void tcpsettimer(Tcpctl *tcb) { int x; /* round trip depenency */ x = backoff(tcb->backoff) * (tcb->mdev + (tcb->srtt>>LOGAGAIN) + MSPTICK) / MSPTICK; /* take into account delayed ack */ if((tcb->snd.ptr - tcb->snd.una) <= 2*tcb->mss) x += TCP_ACK/MSPTICK; /* sanity check */ if(x > (10000/MSPTICK)) x = 10000/MSPTICK; tcb->timer.start = x;
2000/0424		}
1997/0327		void