From: Ido Schimmel <[email protected]> So far mlxsw only supported ingress sampling using matchall classifier. This series adds support for egress sampling and policy-based sampling using flower classifier on Spectrum-2 and newer ASICs. As such, it is now possible to issue these commands:
# tc filter add dev swp1 egress pref 1 proto all matchall action sample rate 100 group 1 # tc filter add dev swp2 ingress pref 1 proto ip flower dst_ip 198.51.100.1 action sample rate 100 group 2 When performing egress sampling (using either matchall or flower) the ASIC is able to report the end-to-end latency which is passed to the psample module. Series overview: Patches #1-#3 are preparations without any functional changes Patch #4 generalizes the idea of sampling triggers and creates a hash table to track active sampling triggers in preparation for egress and policy-based triggers. The motivation is explained in the changelog Patch #5 flips mlxsw to start using this hash table instead of storing ingress sampling triggers as an attribute of the sampled port Patch #6 finally adds support for egress sampling using matchall classifier Patches #7-#8 add support for policy-based sampling using flower classifier Patches #9 extends the mlxsw sampling selftest to cover the new triggers Patch #10 makes sure that egress sampling configuration only fails on Spectrum-1 Ido Schimmel (10): mlxsw: spectrum_matchall: Propagate extack further mlxsw: spectrum_matchall: Push sampling checks to per-ASIC operations mlxsw: spectrum_matchall: Pass matchall entry to sampling operations mlxsw: spectrum: Track sampling triggers in a hash table mlxsw: spectrum: Start using sampling triggers hash table mlxsw: spectrum_matchall: Add support for egress sampling mlxsw: core_acl_flex_actions: Add mirror sampler action mlxsw: spectrum_acl: Offload FLOW_ACTION_SAMPLE selftests: mlxsw: Add tc sample tests for new triggers selftests: mlxsw: Test egress sampling limitation on Spectrum-1 only .../mellanox/mlxsw/core_acl_flex_actions.c | 131 ++++++++++++++ .../mellanox/mlxsw/core_acl_flex_actions.h | 11 ++ .../net/ethernet/mellanox/mlxsw/spectrum.c | 148 ++++++++++++++++ .../net/ethernet/mellanox/mlxsw/spectrum.h | 52 +++++- .../ethernet/mellanox/mlxsw/spectrum_acl.c | 25 +++ .../mlxsw/spectrum_acl_flex_actions.c | 83 +++++++++ .../ethernet/mellanox/mlxsw/spectrum_flow.c | 2 +- .../ethernet/mellanox/mlxsw/spectrum_flower.c | 18 ++ .../mellanox/mlxsw/spectrum_matchall.c | 167 +++++++++++------- .../ethernet/mellanox/mlxsw/spectrum_trap.c | 111 +++++++++++- .../drivers/net/mlxsw/tc_restrictions.sh | 4 +- .../selftests/drivers/net/mlxsw/tc_sample.sh | 135 ++++++++++++++ 12 files changed, 808 insertions(+), 79 deletions(-) -- 2.29.2
