diff options
author | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
---|---|---|
committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/net/ax25/ax25_std_subr.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/net/ax25/ax25_std_subr.c')
-rw-r--r-- | kernel/net/ax25/ax25_std_subr.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/kernel/net/ax25/ax25_std_subr.c b/kernel/net/ax25/ax25_std_subr.c new file mode 100644 index 000000000..8b66a41e5 --- /dev/null +++ b/kernel/net/ax25/ax25_std_subr.c @@ -0,0 +1,86 @@ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk) + */ +#include <linux/errno.h> +#include <linux/types.h> +#include <linux/socket.h> +#include <linux/in.h> +#include <linux/kernel.h> +#include <linux/timer.h> +#include <linux/string.h> +#include <linux/sockios.h> +#include <linux/net.h> +#include <net/ax25.h> +#include <linux/inet.h> +#include <linux/netdevice.h> +#include <linux/skbuff.h> +#include <net/sock.h> +#include <asm/uaccess.h> +#include <linux/fcntl.h> +#include <linux/mm.h> +#include <linux/interrupt.h> + +/* + * The following routines are taken from page 170 of the 7th ARRL Computer + * Networking Conference paper, as is the whole state machine. + */ + +void ax25_std_nr_error_recovery(ax25_cb *ax25) +{ + ax25_std_establish_data_link(ax25); +} + +void ax25_std_establish_data_link(ax25_cb *ax25) +{ + ax25->condition = 0x00; + ax25->n2count = 0; + + if (ax25->modulus == AX25_MODULUS) + ax25_send_control(ax25, AX25_SABM, AX25_POLLON, AX25_COMMAND); + else + ax25_send_control(ax25, AX25_SABME, AX25_POLLON, AX25_COMMAND); + + ax25_calculate_t1(ax25); + ax25_stop_idletimer(ax25); + ax25_stop_t3timer(ax25); + ax25_stop_t2timer(ax25); + ax25_start_t1timer(ax25); +} + +void ax25_std_transmit_enquiry(ax25_cb *ax25) +{ + if (ax25->condition & AX25_COND_OWN_RX_BUSY) + ax25_send_control(ax25, AX25_RNR, AX25_POLLON, AX25_COMMAND); + else + ax25_send_control(ax25, AX25_RR, AX25_POLLON, AX25_COMMAND); + + ax25->condition &= ~AX25_COND_ACK_PENDING; + + ax25_calculate_t1(ax25); + ax25_start_t1timer(ax25); +} + +void ax25_std_enquiry_response(ax25_cb *ax25) +{ + if (ax25->condition & AX25_COND_OWN_RX_BUSY) + ax25_send_control(ax25, AX25_RNR, AX25_POLLON, AX25_RESPONSE); + else + ax25_send_control(ax25, AX25_RR, AX25_POLLON, AX25_RESPONSE); + + ax25->condition &= ~AX25_COND_ACK_PENDING; +} + +void ax25_std_timeout_response(ax25_cb *ax25) +{ + if (ax25->condition & AX25_COND_OWN_RX_BUSY) + ax25_send_control(ax25, AX25_RNR, AX25_POLLOFF, AX25_RESPONSE); + else + ax25_send_control(ax25, AX25_RR, AX25_POLLOFF, AX25_RESPONSE); + + ax25->condition &= ~AX25_COND_ACK_PENDING; +} |