* ppp_tty.c - Point-to-Point Protocol (PPP) driver for asynchronous
* tty devices.
*
- * Copyright (c) 1989 Carnegie Mellon University.
- * All rights reserved.
+ * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved.
*
- * Redistribution and use in source and binary forms are permitted
- * provided that the above copyright notice and this paragraph are
- * duplicated in all such forms and that any documentation,
- * advertising materials, and other materials related to such
- * distribution and use acknowledge that the software was developed
- * by Carnegie Mellon University. The name of the
- * University may not be used to endorse or promote products derived
- * from this software without specific prior written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * 3. The name "Carnegie Mellon University" must not be used to
+ * endorse or promote products derived from this software without
+ * prior written permission. For permission or any legal
+ * details, please contact
+ * Office of Technology Transfer
+ * Carnegie Mellon University
+ * 5000 Forbes Avenue
+ * Pittsburgh, PA 15213-3890
+ * (412) 268-4387, fax: (412) 268-7395
+ * tech-transfer@andrew.cmu.edu
+ *
+ * 4. Redistributions of any form whatsoever must retain the following
+ * acknowledgment:
+ * "This product includes software developed by Computing Services
+ * at Carnegie Mellon University (http://www.cmu.edu/computing/)."
+ *
+ * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
+ * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
+ * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+ * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Drew D. Perkins
* Carnegie Mellon University
* Robert Olsson <robert@robur.slu.se> and Paul Mackerras.
*/
-/* $Id: ppp_tty.c,v 1.7 1996/07/01 01:24:28 paulus Exp $ */
+/* $Id: ppp_tty.c,v 1.9 2002/12/06 09:49:16 paulus Exp $ */
/* from if_sl.c,v 1.11 84/10/04 12:54:47 rick Exp */
/* from NetBSD: if_ppp.c,v 1.15.2.2 1994/07/28 05:17:58 cgd Exp */
/*
* This gets called when a received packet is placed on
- * the inq, at splsoftnet.
+ * the inq, at splnet.
*/
static void
pppasyncctlp(sc)
/*
* Start output on async tty interface. If the transmit queue
* has drained sufficiently, arrange for pppasyncstart to be
- * called later at splsoftnet.
+ * called later at splnet.
* Called at spltty or higher.
*/
int
++tk_nin;
++sc->sc_stats.ppp_ibytes;
- if (c & TTY_FE) {
- /* framing error or overrun on this char - abort packet */
- if (sc->sc_flags & SC_DEBUG)
- printf("ppp%d: bad char %x\n", sc->sc_if.if_unit, c);
- goto flush;
- }
-
c &= 0xff;
/*
* Handle software flow control of output.
*/
if (tp->t_iflag & IXON) {
- if (c == tp->t_cc[VSTOP] && tp->t_cc[VSTOP] != _POSIX_VDISABLE) {
+ if (c == tp->t_cc[VSTOP] && tp->t_cc[VSTOP] != 0) {
if ((tp->t_state & TS_TTSTOP) == 0) {
tp->t_state |= TS_TTSTOP;
(*cdevsw[major(tp->t_dev)].d_stop)(tp, 0);
}
return 0;
}
- if (c == tp->t_cc[VSTART] && tp->t_cc[VSTART] != _POSIX_VDISABLE) {
+ if (c == tp->t_cc[VSTART] && tp->t_cc[VSTART] != 0) {
tp->t_state &= ~TS_TTSTOP;
if (tp->t_oproc != NULL)
(*tp->t_oproc)(tp);