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net: Add testing sysfs attribute

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Similar to speed, duplex and dorment, report the testing status
in sysfs.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andrew Lunn 2020-04-20 00:11:51 +02:00 committed by David S. Miller
parent eec517cdb4
commit db30a57779
2 changed files with 27 additions and 1 deletions
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13
Documentation/ABI/testing/sysfs-class-net
View File

@ -124,6 +124,19 @@ Description:
authentication is performed (e.g: 802.1x). 'link_mode' attribute
will also reflect the dormant state.
What: /sys/class/net/<iface>/testing
Date: April 2002
KernelVersion: 5.8
Contact: netdev@vger.kernel.org
Description:
Indicates whether the interface is under test. Possible
values are:
0: interface is not being tested
1: interface is being tested
When an interface is under test, it cannot be expected
to pass packets as normal.
What: /sys/clas/net/<iface>/duplex
Date: October 2009
KernelVersion: 2.6.33

15
net/core/net-sysfs.c
View File

@ -243,6 +243,18 @@ static ssize_t duplex_show(struct device *dev,
}
static DEVICE_ATTR_RO(duplex);
static ssize_t testing_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct net_device *netdev = to_net_dev(dev);
if (netif_running(netdev))
return sprintf(buf, fmt_dec, !!netif_testing(netdev));
return -EINVAL;
}
static DEVICE_ATTR_RO(testing);
static ssize_t dormant_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
@ -260,7 +272,7 @@ static const char *const operstates[] = {
"notpresent", /* currently unused */
"down",
"lowerlayerdown",
"testing", /* currently unused */
"testing",
"dormant",
"up"
};
@ -524,6 +536,7 @@ static struct attribute *net_class_attrs[] __ro_after_init = {
&dev_attr_speed.attr,
&dev_attr_duplex.attr,
&dev_attr_dormant.attr,
&dev_attr_testing.attr,
&dev_attr_operstate.attr,
&dev_attr_carrier_changes.attr,
&dev_attr_ifalias.attr,