Optional counter statistics support

From: Leon Romanovsky <[email protected]>

Change Log:
v3:
* Many cosmetic changes
* Fixed rebase error which caused to have two same patches with different implementation.
* New patch that split nldev_stat_set_doit.
v2: https://lore.kernel.org/all/[email protected]
* Add rdma_free_hw_stats_struct() helper API (with a new patch)
* In sysfs add a WARN_ON to check if optional stats are always at the end
* Add a new nldev command to get the counter status
* Improve nldev_stat_set_counter_dynamic_doit() by creating a target state bitmap
v1: https://lore.kernel.org/all/[email protected]
* Add a descriptor structure to replace name in struct rdma_hw_stats;
* Add a bitmap in struct rdma_hw_stats to indicate the enable/disable status of all counters;
* Add a "flag" field in counter descriptor and define IB_STAT_FLAG_OPTIONAL flag;
* add/remove_op_stat() are replaced by modify_op_stat();
* Use "set/unset" in command line and send full opcounters list through netlink, and send opcounter indexes instead of names;
* Patches are re-ordered.
v0: https://lore.kernel.org/all/[email protected]

----------------------------------------------------------------------
Hi,

This series from Neta and Aharon provides an extension to the rdma statistics tool that allows to set optional counters dynamically, using netlink.

The idea of having optional counters is to provide to the users the ability to get statistics of counters that hurts performance.

Once an optional counter was added, its statistics will be presented along with all the counters, using the show command.

Binding objects to the optional counters is currently not supported, neither in auto mode nor in manual mode.

To get the list of optional counters that are supported on this device, use "rdma statistic mode supported". To see which counters are currently enabled, use "rdma statistic mode".

Examples:

$ rdma statistic mode supported
link rocep8s0f0/1 supported optional-counters cc_rx_ce_pkts,cc_rx_cnp_pkts,cc_tx_cnp_pkts
link rocep8s0f1/1 supported optional-counters cc_rx_ce_pkts,cc_rx_cnp_pkts,cc_tx_cnp_pkts

$ sudo rdma statistic set link rocep8s0f0/1 optional-counters cc_rx_ce_pkts,cc_rx_cnp_pkts
$ rdma statistic mode link rocep8s0f0/1
link rocep8s0f0/1 optional-counters cc_rx_ce_pkts,cc_rx_cnp_pkts

$ rdma statistic show link rocep8s0f0/1
link rocep8s0f0/1 rx_write_requests 0 rx_read_requests 0 rx_atomic_requests 0 out_of_buffer 0
out_of_sequence 0 duplicate_request 0 rnr_nak_retry_err 0 packet_seq_err 0 implied_nak_seq_err 0
local_ack_timeout_err 0 resp_local_length_error 0 resp_cqe_error 0 req_cqe_error 0
req_remote_invalid_request 0 req_remote_access_errors 0 resp_remote_access_errors 0
resp_cqe_flush_error 0 req_cqe_flush_error 0 roce_adp_retrans 0 roce_adp_retrans_to 0
roce_slow_restart 0 roce_slow_restart_cnps 0 roce_slow_restart_trans 0 rp_cnp_ignored 0
rp_cnp_handled 0 np_ecn_marked_roce_packets 0 np_cnp_sent 0 rx_icrc_encapsulated 0 cc_rx_ce_pkts 0
cc_rx_cnp_pkts 0

$ sudo rdma statistic set link rocep8s0f0/1 optional-counters cc_rx_ce_pkts
$ rdma statistic mode link rocep8s0f0/1
link rocep8s0f0/1 optional-counters cc_rx_ce_pkts

Thanks

Aharon Landau (12):
net/mlx5: Add ifc bits to support optional counters net/mlx5: Add priorities for counters in RDMA namespaces RDMA/counter: Add a descriptor in struct rdma_hw_stats RDMA/counter: Add an is_disabled field in struct rdma_hw_stats RDMA/counter: Add optional counter support
RDMA/nldev: Add support to get status of all counters RDMA/nldev: Split nldev_stat_set_mode_doit out of nldev_stat_set_doit RDMA/nldev: Allow optional-counter status configuration through RDMA
netlink
RDMA/mlx5: Support optional counters in hw_stats initialization RDMA/mlx5: Add steering support in optional flow counters RDMA/mlx5: Add modify_op_stat() support
RDMA/mlx5: Add optional counter support in get_hw_stats callback

Mark Zhang (1):
RDMA/core: Add a helper API rdma_free_hw_stats_struct

 drivers/infiniband/core/counters.c            |  40 ++-
 drivers/infiniband/core/device.c              |   1 +
 drivers/infiniband/core/nldev.c               | 235 +++++++++++++--
 drivers/infiniband/core/sysfs.c               |  52 ++--
 drivers/infiniband/core/verbs.c               |  45 +++
 drivers/infiniband/hw/bnxt_re/hw_counters.c   | 137 +++++----
 drivers/infiniband/hw/cxgb4/provider.c        |  22 +-
 drivers/infiniband/hw/efa/efa_verbs.c         |  19 +-
 drivers/infiniband/hw/hfi1/verbs.c            |  53 ++--
 drivers/infiniband/hw/irdma/verbs.c           | 100 +++----
 drivers/infiniband/hw/mlx4/main.c             |  44 ++-
 drivers/infiniband/hw/mlx4/mlx4_ib.h          |   2 +-
 drivers/infiniband/hw/mlx5/counters.c         | 282 +++++++++++++++---
 drivers/infiniband/hw/mlx5/fs.c               | 187 ++++++++++++
 drivers/infiniband/hw/mlx5/mlx5_ib.h          |  28 +-
 drivers/infiniband/sw/rxe/rxe_hw_counters.c   |  42 +--
 .../net/ethernet/mellanox/mlx5/core/fs_core.c |  54 +++-
 include/linux/mlx5/device.h                   |   2 +
 include/linux/mlx5/fs.h                       |   2 +
 include/linux/mlx5/mlx5_ifc.h                 |  22 +-
 include/rdma/ib_hdrs.h                        |   1 +
 include/rdma/ib_verbs.h                       |  58 ++--
 include/rdma/rdma_counter.h                   |   2 +
 include/uapi/rdma/rdma_netlink.h              |   5 +
 24 files changed, 1094 insertions(+), 341 deletions(-)

2.31.1