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batman-adv: ELP - adding sysfs parameter for elp interval

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This parameter can be set individually on each interface and
allows the configuration of the elp interval for the link
quality measurements during runtime. Usually it is desirable
to set it to a higher (= slower) value on interfaces which
have a more static characteristic (e.g. wired interfaces)
or very dense neighbourhoods to reduce overhead.

Developed by Linus during a 6 months trainee study period in
Ascom (Switzerland) AG.

Signed-off-by: Linus Luessing <linus.luessing@web.de>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
[antonio@open-mesh.com: respin on top of the latest master]
Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
This commit is contained in:
Linus Luessing 2016-01-16 16:40:11 +08:00 committed by Antonio Quartulli
parent 162bd64c24
commit 7f136cd491
2 changed files with 14 additions and 1 deletions
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8
Documentation/ABI/testing/sysfs-class-net-batman-adv
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@ -1,4 +1,11 @@
What: /sys/class/net/<iface>/batman-adv/elp_interval
Date: Feb 2014
Contact: Linus Lüssing <linus.luessing@web.de>
Description:
Defines the interval in milliseconds in which batman
sends its probing packets for link quality measurements.
What: /sys/class/net/<iface>/batman-adv/iface_status
Date: May 2010
Contact: Marek Lindner <mareklindner@neomailbox.ch>
@ -12,4 +19,3 @@ Description:
The /sys/class/net/<iface>/batman-adv/mesh_iface file
displays the batman mesh interface this <iface>
currently is associated with.

7
net/batman-adv/sysfs.c
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@ -920,10 +920,17 @@ static ssize_t batadv_show_iface_status(struct kobject *kobj,
static BATADV_ATTR(mesh_iface, S_IRUGO | S_IWUSR, batadv_show_mesh_iface,
batadv_store_mesh_iface);
static BATADV_ATTR(iface_status, S_IRUGO, batadv_show_iface_status, NULL);
#ifdef CONFIG_BATMAN_ADV_BATMAN_V
BATADV_ATTR_HIF_UINT(elp_interval, bat_v.elp_interval, S_IRUGO | S_IWUSR,
2 * BATADV_JITTER, INT_MAX, NULL);
#endif
static struct batadv_attribute *batadv_batman_attrs[] = {
&batadv_attr_mesh_iface,
&batadv_attr_iface_status,
#ifdef CONFIG_BATMAN_ADV_BATMAN_V
&batadv_attr_elp_interval,
#endif
NULL,
};