net: core: Expose number of link up/down transitions
authorDavid Decotigny <decot@googlers.com>
Thu, 18 Jan 2018 17:59:13 +0000 (09:59 -0800)
committerDavid S. Miller <davem@davemloft.net>
Mon, 22 Jan 2018 20:42:05 +0000 (15:42 -0500)
commitb2d3bcfa26a7a8de41f358a6cae8b848673b3c6e
tree539b5266ff43bf1f842d7cd7dea2c998dff98afd
parente8660ded7f5a9889395d33ce3d5e8c729a462bf5
net: core: Expose number of link up/down transitions

Expose the number of times the link has been going UP or DOWN, and
update the "carrier_changes" counter to be the sum of these two events.
While at it, also update the sysfs-class-net documentation to cover:
carrier_changes (3.15), carrier_up_count (4.16) and carrier_down_count
(4.16)

Signed-off-by: David Decotigny <decot@googlers.com>
[Florian:
* rebase
* add documentation
* merge carrier_changes with up/down counters]
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Documentation/ABI/testing/sysfs-class-net
include/linux/netdevice.h
include/uapi/linux/if_link.h
net/core/net-sysfs.c
net/core/rtnetlink.c
net/sched/sch_generic.c