From: Ido Schimmel <ido...@nvidia.com>
Amit says:
An overheated transceiver can be the root cause of various network
problems such as link flapping. Counting the number of times a
transceiver's temperature was higher than its configured threshold can
therefore help in debugging such issues.
This patch set exposes a transceiver overheat counter via ethtool. This
is achieved by configuring the Spectrum ASIC to generate events whenever
a transceiver is overheated. The temperature thresholds are queried from
the transceiver (if available) and set to the default otherwise.
Example:
# ethtool -S swp1
...
transceiver_overheat: 2
Patch set overview:
Patches #1-#3 add required device registers
Patches #4-#5 add required infrastructure in mlxsw to configure and
count overheat events
Patches #6-#9 gradually add support for the transceiver overheat counter
Patch #10 exposes the transceiver overheat counter via ethtool
Amit Cohen (10):
mlxsw: reg: Add Management Temperature Warning Event Register
mlxsw: reg: Add Port Module Plug/Unplug Event Register
mlxsw: reg: Add Ports Module Administrative and Operational Status
Register
mlxsw: core_hwmon: Query MTMP before writing to set only relevant
fields
mlxsw: core: Add an infrastructure to track transceiver overheat
counter
mlxsw: Update transceiver_overheat counter according to MTWE
mlxsw: Enable temperature event for all supported port module sensors
mlxsw: spectrum: Initialize netdev's module overheat counter
mlxsw: Update module's settings when module is plugged in
mlxsw: spectrum_ethtool: Expose transceiver_overheat counter
drivers/net/ethernet/mellanox/mlxsw/core.c | 27 ++
drivers/net/ethernet/mellanox/mlxsw/core.h | 5 +
.../net/ethernet/mellanox/mlxsw/core_env.c | 368 ++++++++++++++++++
.../net/ethernet/mellanox/mlxsw/core_env.h | 6 +
.../net/ethernet/mellanox/mlxsw/core_hwmon.c | 21 +-
drivers/net/ethernet/mellanox/mlxsw/reg.h | 132 +++++++
.../net/ethernet/mellanox/mlxsw/spectrum.c | 44 +++
.../net/ethernet/mellanox/mlxsw/spectrum.h | 1 +
.../mellanox/mlxsw/spectrum_ethtool.c | 57 ++-
drivers/net/ethernet/mellanox/mlxsw/trap.h | 4 +
10 files changed, 660 insertions(+), 5 deletions(-)
--
2.26.2
