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| author | Amir Vadai | 2016-05-13 14:55:41 +0200 |
|---|---|---|
| committer | David S. Miller | 2016-05-16 19:43:51 +0200 |
| commit | 43a335e055bb7ebdc8a68ce7362ef26ef5bda92b (patch) | |
| tree | 0441f14934b5e341f12df45bc86bbca9c3dc3d03 /include/linux/mlx5/fs.h | |
| parent | net/mlx5_core: Introduce flow steering destination of type counter (diff) | |
| download | kernel-qcow2-linux-43a335e055bb7ebdc8a68ce7362ef26ef5bda92b.tar.gz kernel-qcow2-linux-43a335e055bb7ebdc8a68ce7362ef26ef5bda92b.tar.xz kernel-qcow2-linux-43a335e055bb7ebdc8a68ce7362ef26ef5bda92b.zip | |
net/mlx5_core: Flow counters infrastructure
If a counter has the aging flag set when created, it is added to a list
of counters that will be queried periodically from a workqueue. query
result and last use timestamp are cached.
add/del counter must be very efficient since thousands of such
operations might be issued in a second.
There is only a single reference to counters without aging, therefore
no need for locks.
But, counters with aging enabled are stored in a list. In order to make
code as lockless as possible, all the list manipulation and access to
hardware is done from a single context - the periodic counters query
thread.
The hardware supports multiple counters per FTE, however currently we
are using one counter for each FTE.
Signed-off-by: Amir Vadai <amirva@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/mlx5/fs.h')
| -rw-r--r-- | include/linux/mlx5/fs.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/mlx5/fs.h b/include/linux/mlx5/fs.h index c8b9ede1c20a..4b7a107d9c19 100644 --- a/include/linux/mlx5/fs.h +++ b/include/linux/mlx5/fs.h @@ -127,4 +127,9 @@ int mlx5_modify_rule_destination(struct mlx5_flow_rule *rule, struct mlx5_flow_destination *dest); struct mlx5_fc *mlx5_flow_rule_counter(struct mlx5_flow_rule *rule); +struct mlx5_fc *mlx5_fc_create(struct mlx5_core_dev *dev, bool aging); +void mlx5_fc_destroy(struct mlx5_core_dev *dev, struct mlx5_fc *counter); +void mlx5_fc_query_cached(struct mlx5_fc *counter, + u64 *bytes, u64 *packets, u64 *lastuse); + #endif |