nfc/hci/llc_shdlc.c

51 	int dnr;			/* oldest sent unacked seq num */
186 	int dnr = shdlc->dnr;	/* MUST initially be < y_nr */
190 	while (dnr != y_nr) {
191 		pr_debug("release ack pending frame %d\n", dnr);
196 		dnr = (dnr + 1) % 8;
251 	if (llc_shdlc_x_lt_y_lteq_z(shdlc->dnr, y_nr, shdlc->ns)) {
254 		shdlc->dnr = y_nr;
265 	if (llc_shdlc_x_lt_y_lteq_z(shdlc->dnr, y_nr, shdlc->ns)) {
267 		shdlc->dnr = y_nr;
275 	pr_debug("ns reset to %d\n", shdlc->dnr);
281 	shdlc->ns = shdlc->dnr;
290 	if (llc_shdlc_x_lteq_y_lt_z(shdlc->dnr, y_nr, shdlc->ns)) {
297 		if (shdlc->dnr != y_nr) {
298 			while ((shdlc->dnr = ((shdlc->dnr + 1) % 8)) != y_nr) {
350 		shdlc->dnr = 0;
499 static int llc_shdlc_w_used(int ns, int dnr)
503 	if (dnr <= ns)
504 		unack_count = ns - dnr;
506 		unack_count = 8 - dnr + ns;
519 		pr_debug("sendQlen=%d ns=%d dnr=%d rnr=%s w_room=%d unackQlen=%d\n",
520 			 shdlc->send_q.qlen, shdlc->ns, shdlc->dnr,
522 			 shdlc->w - llc_shdlc_w_used(shdlc->ns, shdlc->dnr),