314 void sctp_transport_update_rto(struct sctp_transport *tp, __u32 rtt)  in sctp_transport_update_rto()  argument
316 	if (unlikely(!tp->rto_pending))  in sctp_transport_update_rto()
318 		pr_debug("%s: rto_pending not set on transport %p!\n", __func__, tp);  in sctp_transport_update_rto()
320 	if (tp->rttvar || tp->srtt) {  in sctp_transport_update_rto()
321 		struct net *net = sock_net(tp->asoc->base.sk);  in sctp_transport_update_rto()
333 		tp->rttvar = tp->rttvar - (tp->rttvar >> net->sctp.rto_beta)  in sctp_transport_update_rto()
334 			+ (((__u32)abs((__s64)tp->srtt - (__s64)rtt)) >> net->sctp.rto_beta);  in sctp_transport_update_rto()
335 		tp->srtt = tp->srtt - (tp->srtt >> net->sctp.rto_alpha)  in sctp_transport_update_rto()
341 		tp->srtt = rtt;  in sctp_transport_update_rto()
342 		tp->rttvar = rtt >> 1;  in sctp_transport_update_rto()
348 	if (tp->rttvar == 0)  in sctp_transport_update_rto()
349 		tp->rttvar = SCTP_CLOCK_GRANULARITY;  in sctp_transport_update_rto()
352 	tp->rto = tp->srtt + (tp->rttvar << 2);  in sctp_transport_update_rto()
357 	if (tp->rto < tp->asoc->rto_min)  in sctp_transport_update_rto()
358 		tp->rto = tp->asoc->rto_min;  in sctp_transport_update_rto()
363 	if (tp->rto > tp->asoc->rto_max)  in sctp_transport_update_rto()
364 		tp->rto = tp->asoc->rto_max;  in sctp_transport_update_rto()
366 	sctp_max_rto(tp->asoc, tp);  in sctp_transport_update_rto()
367 	tp->rtt = rtt;  in sctp_transport_update_rto()
372 	tp->rto_pending = 0;  in sctp_transport_update_rto()
375 		 __func__, tp, rtt, tp->srtt, tp->rttvar, tp->rto);  in sctp_transport_update_rto()