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Date: Fri, 11 Jul 2003 21:17:16 -0400
From: Samuel Thibault <Samuel.Thibault@ens-lyon.fr>
To: linux-ppp@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: torvalds@osdl.org
Subject: [PATCH] [2.5] adding ppp xon/xoff support
Message-ID: <20030712011716.GB4694@bouh.unh.edu>
Reply-To: Samuel Thibault <samuel.thibault@fnac.net>
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Hi,

This patch wasn't applied, probably because the misplaced else
statement, here is a corrected version. This would at last make linux
support xon/xoff for ppp connections (it hasn't been available since 2.0
at least).

Please apply,

Regards,
Samuel Thibault

diff -ur linux-2.5.71-orig/drivers/net/ppp_async.c linux-2.5.71-perso/drivers/net/ppp_async.c
--- linux-2.5.71-orig/drivers/net/ppp_async.c	2003-06-14 17:13:03.000000000 -0400
+++ linux-2.5.71-perso/drivers/net/ppp_async.c	2003-07-06 13:51:23.000000000 -0400
@@ -893,6 +893,24 @@
 			process_input_packet(ap);
 		} else if (c == PPP_ESCAPE) {
 			ap->state |= SC_ESCAPE;
+		} else if (I_IXON(ap->tty)) {
+			if (c == STOP_CHAR(ap->tty)) {
+				if (!ap->tty->stopped) {
+					ap->tty->stopped = 1;
+					if (ap->tty->driver->stop)
+						(ap->tty->driver->stop)(ap->tty);
+				}
+			} else if (c == START_CHAR(ap->tty)) {
+				if (ap->tty->stopped) {
+					ap->tty->stopped = 0;
+					if (ap->tty->driver->start)
+						(ap->tty->driver->start)(ap->tty);
+					if ((test_bit(TTY_DO_WRITE_WAKEUP, &ap->tty->flags)) &&
+					    ap->tty->ldisc.write_wakeup)
+						(ap->tty->ldisc.write_wakeup)(ap->tty);
+					wake_up_interruptible(&ap->tty->write_wait);
+				}
+			}
 		}
 		/* otherwise it's a char in the recv ACCM */
 		++n;