mlxsw: spectrum: Track sampling triggers in a hash table
authorIdo Schimmel <idosch@nvidia.com>
Tue, 16 Mar 2021 15:02:57 +0000 (17:02 +0200)
committerDavid S. Miller <davem@davemloft.net>
Tue, 16 Mar 2021 22:32:22 +0000 (15:32 -0700)
commit1b9fc42e46dfea0efa39165d906b0f6a05d6b558
treeef2b9f3923a865b837e81d2f4a78d1984d5c392f
parente09a59555a3028564f3cb0d10c24ab86f50cbb79
mlxsw: spectrum: Track sampling triggers in a hash table

Currently, mlxsw supports a single sampling trigger type (i.e., received
packet). When sampling is configured on an ingress port, the sampling
parameters (e.g., pointer to the psample group) are stored as an
attribute of the port, so that they could be passed to
psample_sample_packet() when a sampled packet is trapped to the CPU.

Subsequent patches are going to add more types of sampling triggers,
making it difficult to maintain the current scheme.

Instead, store all the active sampling triggers with their associated
parameters in a hash table. That way, more trigger types can be easily
added.

The next patch will flip mlxsw to use the hash table instead of the
current scheme.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/mellanox/mlxsw/spectrum.c
drivers/net/ethernet/mellanox/mlxsw/spectrum.h