From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- net/ax25/ax25_timer.c | 224 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 224 insertions(+) create mode 100644 net/ax25/ax25_timer.c (limited to 'net/ax25/ax25_timer.c') diff --git a/net/ax25/ax25_timer.c b/net/ax25/ax25_timer.c new file mode 100644 index 000000000..9f7cb0a7c --- /dev/null +++ b/net/ax25/ax25_timer.c @@ -0,0 +1,224 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * + * Copyright (C) Alan Cox GW4PTS (alan@lxorguk.ukuu.org.uk) + * Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk) + * Copyright (C) Tomi Manninen OH2BNS (oh2bns@sral.fi) + * Copyright (C) Darryl Miles G7LED (dlm@g7led.demon.co.uk) + * Copyright (C) Joerg Reuter DL1BKE (jreuter@yaina.de) + * Copyright (C) Frederic Rible F1OAT (frible@teaser.fr) + * Copyright (C) 2002 Ralf Baechle DO1GRB (ralf@gnu.org) + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static void ax25_heartbeat_expiry(struct timer_list *); +static void ax25_t1timer_expiry(struct timer_list *); +static void ax25_t2timer_expiry(struct timer_list *); +static void ax25_t3timer_expiry(struct timer_list *); +static void ax25_idletimer_expiry(struct timer_list *); + +void ax25_setup_timers(ax25_cb *ax25) +{ + timer_setup(&ax25->timer, ax25_heartbeat_expiry, 0); + timer_setup(&ax25->t1timer, ax25_t1timer_expiry, 0); + timer_setup(&ax25->t2timer, ax25_t2timer_expiry, 0); + timer_setup(&ax25->t3timer, ax25_t3timer_expiry, 0); + timer_setup(&ax25->idletimer, ax25_idletimer_expiry, 0); +} + +void ax25_start_heartbeat(ax25_cb *ax25) +{ + mod_timer(&ax25->timer, jiffies + 5 * HZ); +} + +void ax25_start_t1timer(ax25_cb *ax25) +{ + mod_timer(&ax25->t1timer, jiffies + ax25->t1); +} + +void ax25_start_t2timer(ax25_cb *ax25) +{ + mod_timer(&ax25->t2timer, jiffies + ax25->t2); +} + +void ax25_start_t3timer(ax25_cb *ax25) +{ + if (ax25->t3 > 0) + mod_timer(&ax25->t3timer, jiffies + ax25->t3); + else + del_timer(&ax25->t3timer); +} + +void ax25_start_idletimer(ax25_cb *ax25) +{ + if (ax25->idle > 0) + mod_timer(&ax25->idletimer, jiffies + ax25->idle); + else + del_timer(&ax25->idletimer); +} + +void ax25_stop_heartbeat(ax25_cb *ax25) +{ + del_timer(&ax25->timer); +} + +void ax25_stop_t1timer(ax25_cb *ax25) +{ + del_timer(&ax25->t1timer); +} + +void ax25_stop_t2timer(ax25_cb *ax25) +{ + del_timer(&ax25->t2timer); +} + +void ax25_stop_t3timer(ax25_cb *ax25) +{ + del_timer(&ax25->t3timer); +} + +void ax25_stop_idletimer(ax25_cb *ax25) +{ + del_timer(&ax25->idletimer); +} + +int ax25_t1timer_running(ax25_cb *ax25) +{ + return timer_pending(&ax25->t1timer); +} + +unsigned long ax25_display_timer(struct timer_list *timer) +{ + long delta = timer->expires - jiffies; + + if (!timer_pending(timer)) + return 0; + + return max(0L, delta); +} + +EXPORT_SYMBOL(ax25_display_timer); + +static void ax25_heartbeat_expiry(struct timer_list *t) +{ + int proto = AX25_PROTO_STD_SIMPLEX; + ax25_cb *ax25 = from_timer(ax25, t, timer); + + if (ax25->ax25_dev) + proto = ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]; + + switch (proto) { + case AX25_PROTO_STD_SIMPLEX: + case AX25_PROTO_STD_DUPLEX: + ax25_std_heartbeat_expiry(ax25); + break; + +#ifdef CONFIG_AX25_DAMA_SLAVE + case AX25_PROTO_DAMA_SLAVE: + if (ax25->ax25_dev->dama.slave) + ax25_ds_heartbeat_expiry(ax25); + else + ax25_std_heartbeat_expiry(ax25); + break; +#endif + } +} + +static void ax25_t1timer_expiry(struct timer_list *t) +{ + ax25_cb *ax25 = from_timer(ax25, t, t1timer); + + switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) { + case AX25_PROTO_STD_SIMPLEX: + case AX25_PROTO_STD_DUPLEX: + ax25_std_t1timer_expiry(ax25); + break; + +#ifdef CONFIG_AX25_DAMA_SLAVE + case AX25_PROTO_DAMA_SLAVE: + if (!ax25->ax25_dev->dama.slave) + ax25_std_t1timer_expiry(ax25); + break; +#endif + } +} + +static void ax25_t2timer_expiry(struct timer_list *t) +{ + ax25_cb *ax25 = from_timer(ax25, t, t2timer); + + switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) { + case AX25_PROTO_STD_SIMPLEX: + case AX25_PROTO_STD_DUPLEX: + ax25_std_t2timer_expiry(ax25); + break; + +#ifdef CONFIG_AX25_DAMA_SLAVE + case AX25_PROTO_DAMA_SLAVE: + if (!ax25->ax25_dev->dama.slave) + ax25_std_t2timer_expiry(ax25); + break; +#endif + } +} + +static void ax25_t3timer_expiry(struct timer_list *t) +{ + ax25_cb *ax25 = from_timer(ax25, t, t3timer); + + switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) { + case AX25_PROTO_STD_SIMPLEX: + case AX25_PROTO_STD_DUPLEX: + ax25_std_t3timer_expiry(ax25); + break; + +#ifdef CONFIG_AX25_DAMA_SLAVE + case AX25_PROTO_DAMA_SLAVE: + if (ax25->ax25_dev->dama.slave) + ax25_ds_t3timer_expiry(ax25); + else + ax25_std_t3timer_expiry(ax25); + break; +#endif + } +} + +static void ax25_idletimer_expiry(struct timer_list *t) +{ + ax25_cb *ax25 = from_timer(ax25, t, idletimer); + + switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) { + case AX25_PROTO_STD_SIMPLEX: + case AX25_PROTO_STD_DUPLEX: + ax25_std_idletimer_expiry(ax25); + break; + +#ifdef CONFIG_AX25_DAMA_SLAVE + case AX25_PROTO_DAMA_SLAVE: + if (ax25->ax25_dev->dama.slave) + ax25_ds_idletimer_expiry(ax25); + else + ax25_std_idletimer_expiry(ax25); + break; +#endif + } +} -- cgit v1.2.3