sys/netinet/tcp_timewait.c

217  *    inp is locked, and is unlocked before returning.
223 	struct inpcb *inp = tp->t_inpcb;
227 	int isipv6 = inp->inp_inc.inc_flags & INC_ISIPV6;
231 	INP_WLOCK_ASSERT(inp);
237 			error = in6_localaddr(&inp->in6p_faddr);
243 			error = in_localip(inp->inp_faddr);
248 				INP_WUNLOCK(inp);
274 				INP_WUNLOCK(inp);
282 	tw->tw_inpcb = inp;
283 	in_pcbref(inp);	/* Reference from tw */
328 	so = inp->inp_socket;
336 	inp->inp_ppcb = tw;
337 	inp->inp_flags |= INP_TIMEWAIT;
344 	if (inp->inp_flags & INP_SOCKREF) {
347 		inp->inp_flags &= ~INP_SOCKREF;
348 		INP_WUNLOCK(inp);
354 		INP_WUNLOCK(inp);
395 tcp_twcheck(struct inpcb *inp, struct tcpopt *to __unused, struct tcphdr *th,
403 	INP_WLOCK_ASSERT(inp);
411 	tw = intotw(inp);
480 	INP_WUNLOCK(inp);
489 	struct inpcb *inp;
500 	inp = tw->tw_inpcb;
501 	KASSERT((inp->inp_flags & INP_TIMEWAIT), ("tcp_twclose: !timewait"));
502 	KASSERT(intotw(inp) == tw, ("tcp_twclose: inp_ppcb != tw"));
504 	INP_WLOCK_ASSERT(inp);
507 	inp->inp_ppcb = NULL;
508 	in_pcbdrop(inp);
510 	so = inp->inp_socket;
518 		if (inp->inp_flags & INP_SOCKREF) {
519 			inp->inp_flags &= ~INP_SOCKREF;
520 			INP_WUNLOCK(inp);
533 			INP_WUNLOCK(inp);
540 		in_pcbfree(inp);
548 	struct inpcb *inp = tw->tw_inpcb;
561 	int isipv6 = inp->inp_inc.inc_flags & INC_ISIPV6;
565 	INP_WLOCK_ASSERT(inp);
573 	mac_inpcb_create_mbuf(inp, m);
581 		tcpip_fillheaders(inp, ip6, th);
592 		tcpip_fillheaders(inp, ip, th);
625 		ip6->ip6_hlim = in6_selecthlim(inp, NULL);
626 		error = ip6_output(m, inp->in6p_outputopts, NULL,
627 		    (tw->tw_so_options & SO_DONTROUTE), NULL, NULL, inp);
641 		error = ip_output(m, inp->inp_options, NULL,
643 		    NULL, inp);
673 	struct inpcb *inp;
679 	inp = tw->tw_inpcb;
690 	released = in_pcbrele_wlocked(inp);
691 	KASSERT(!released, ("%s: inp should not be released here", __func__));
701 	struct inpcb *inp;
726 		inp = tw->tw_inpcb;
727 		in_pcbref(inp);
732 			INP_WLOCK(inp);
733 			tw = intotw(inp);
734 			if (in_pcbrele_wlocked(inp)) {
735 				KASSERT(tw == NULL, ("%s: held last inp "
743 				INP_WUNLOCK(inp);
754 			INP_WLOCK(inp);
755 			if (!in_pcbrele_wlocked(inp))
756 				INP_WUNLOCK(inp);