1991/1126/port/tcpif.c (diff list | history)

1991/1126/sys/src/9/port/tcpif.c:1,79 – 1991/12171/sys/src/9/port/tcpif.c:1,79 (short | long | prev | next)
1991/0424		#include "u.h" #include "lib.h" #include "mem.h" #include "dat.h" #include "fns.h" #include "errno.h" #include "arp.h" #include "ipdat.h" extern int tcpdbg; #define DPRINT if(tcpdbg) print void state_upcall(Ipconv *s, char oldstate, char newstate) { Block *bp; int len; DPRINT("state_upcall: %s -> %s err %d\n", tcpstate[oldstate], tcpstate[newstate], s->err); if(oldstate == newstate) return; switch(newstate) { case CLOSED:
1991/12171		case Closed:
1991/0424		s->psrc = 0; s->pdst = 0; s->dst = 0;
1991/1126		/* NO break */
1991/0424		case CLOSE_WAIT: /* Remote closes */
1991/12171		case Close_wait: /* Remote closes */
1991/0424		if(s->readq == 0) break;
1991/1120
1991/0424		if(s->err) {
1991/1120		len = strlen(errstrtab[s->err]);
1991/0424		bp = allocb(len);
1991/1120		strcpy((char *)bp->wptr, errstrtab[s->err]); bp->wptr += len;
1991/0424		} else bp = allocb(0);
1991/1120		bp->flags |= S_DELIM; bp->type = M_HANGUP; PUTNEXT(s->readq, bp); break;
1991/0424		} } void
1991/1014		tcpstart(Ipconv *s, int mode, ushort window, char tos)
1991/0424		{ Tcpctl *tcb = &s->tcpctl; if(tcb->state != CLOSED)
1991/12171		if(tcb->state != Closed)
1991/0424		return; init_tcpctl(s); tcb->window = tcb->rcv.wnd = window; tcb->tos = tos; switch(mode){ case TCP_PASSIVE: tcb->flags |= CLONE; setstate(s, LISTEN);
1991/12171		setstate(s, Listen);
1991/0424		break; case TCP_ACTIVE: /* Send SYN, go into SYN_SENT state */ tcb->flags |= ACTIVE; qlock(tcb); send_syn(tcb); setstate(s, SYN_SENT);
1991/12171		setstate(s, Syn_sent);
1991/0424		tcp_output(s); qunlock(tcb); break; } }