diff options
| author | david decotigny <decot@googlers.com> | 2014-03-29 09:48:35 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-03-31 16:24:52 -0400 |
| commit | 2d3b479df41a10e2f41f9259fcba775bd34de6e4 (patch) | |
| tree | 517291066c35188a41b005e81904e69865643e76 /include/linux | |
| parent | 9c76a114bbef10b4d44bd258006721dd896695dd (diff) | |
| download | op-kernel-dev-2d3b479df41a10e2f41f9259fcba775bd34de6e4.zip op-kernel-dev-2d3b479df41a10e2f41f9259fcba775bd34de6e4.tar.gz | |
net-sysfs: expose number of carrier on/off changes
This allows to monitor carrier on/off transitions and detect link
flapping issues:
- new /sys/class/net/X/carrier_changes
- new rtnetlink IFLA_CARRIER_CHANGES (getlink)
Tested:
- grep . /sys/class/net/*/carrier_changes
+ ip link set dev X down/up
+ plug/unplug cable
- updated iproute2: prints IFLA_CARRIER_CHANGES
- iproute2 20121211-2 (debian): unchanged behavior
Signed-off-by: David Decotigny <decot@googlers.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/netdevice.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 34cae3e..45537ed 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1308,6 +1308,9 @@ struct net_device { atomic_long_t rx_dropped; atomic_long_t tx_dropped; + /* Stats to monitor carrier on<->off transitions */ + atomic_t carrier_changes; + #ifdef CONFIG_WIRELESS_EXT /* List of functions to handle Wireless Extensions (instead of ioctl). * See <net/iw_handler.h> for details. Jean II */ |
