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| author | Nikolay Aleksandrov <nikolay@cumulusnetworks.com> | 2016-04-30 10:25:28 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-05-03 04:27:06 +0200 |
| commit | 6dada9b10a0818ba72c249526a742c8c41274a73 (patch) | |
| tree | 99452cd9dc512e297978597c60a3481a0d285421 /drivers/clocksource | |
| parent | net: rtnetlink: add linkxstats callbacks and attribute (diff) | |
| download | linux-6dada9b10a0818ba72c249526a742c8c41274a73.tar.xz linux-6dada9b10a0818ba72c249526a742c8c41274a73.zip | |
bridge: vlan: learn to count
Add support for per-VLAN Tx/Rx statistics. Every global vlan context gets
allocated a per-cpu stats which is then set in each per-port vlan context
for quick access. The br_allowed_ingress() common function is used to
account for Rx packets and the br_handle_vlan() common function is used
to account for Tx packets. Stats accounting is performed only if the
bridge-wide vlan_stats_enabled option is set either via sysfs or netlink.
A struct hole between vlan_enabled and vlan_proto is used for the new
option so it is in the same cache line. Currently it is binary (on/off)
but it is intentionally restricted to exactly 0 and 1 since other values
will be used in the future for different purposes (e.g. per-port stats).
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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