| Message ID | 20220419145431.2991382-1-idosch@nvidia.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | mlxsw: Line cards status tracking | expand |
Hello: This series was applied to netdev/net-next.git (master) by David S. Miller <davem@davemloft.net>: On Tue, 19 Apr 2022 17:54:25 +0300 you wrote: > When a line card is provisioned, netdevs corresponding to the ports > found on the line card are registered. User space can then perform > various logical configurations (e.g., splitting, setting MTU) on these > netdevs. > > However, since the line card is not present / powered on (i.e., it is > not in 'active' state), user space cannot access the various components > found on the line card. For example, user space cannot read the > temperature of gearboxes or transceiver modules found on the line card > via hwmon / thermal. Similarly, it cannot dump the EEPROM contents of > these transceiver modules. The above is only possible when the line card > becomes active. > > [...] Here is the summary with links: - [net-next,1/6] mlxsw: core_linecards: Introduce ops for linecards status change tracking https://git.kernel.org/netdev/net-next/c/de28976d2650 - [net-next,2/6] mlxsw: core: Add bus argument to environment init API https://git.kernel.org/netdev/net-next/c/7b261af9f641 - [net-next,3/6] mlxsw: core_env: Split module power mode setting to a separate function https://git.kernel.org/netdev/net-next/c/a11e1ec141ea - [net-next,4/6] mlxsw: core_env: Add interfaces for line card initialization and de-initialization https://git.kernel.org/netdev/net-next/c/06a0fc43bb10 - [net-next,5/6] mlxsw: core_thermal: Add interfaces for line card initialization and de-initialization https://git.kernel.org/netdev/net-next/c/f11a323da46c - [net-next,6/6] mlxsw: core_hwmon: Add interfaces for line card initialization and de-initialization https://git.kernel.org/netdev/net-next/c/99a03b3193f6 You are awesome, thank you!
When a line card is provisioned, netdevs corresponding to the ports found on the line card are registered. User space can then perform various logical configurations (e.g., splitting, setting MTU) on these netdevs. However, since the line card is not present / powered on (i.e., it is not in 'active' state), user space cannot access the various components found on the line card. For example, user space cannot read the temperature of gearboxes or transceiver modules found on the line card via hwmon / thermal. Similarly, it cannot dump the EEPROM contents of these transceiver modules. The above is only possible when the line card becomes active. This patchset solves the problem by tracking the status of each line card and invoking callbacks from interested parties when a line card becomes active / inactive. Patchset overview: Patch #1 adds the infrastructure in the line cards core that allows users to registers a set of callbacks that are invoked when a line card becomes active / inactive. To avoid races, if a line card is already active during registration, the got_active() callback is invoked. Patches #2-#3 are preparations. Patch #4 changes the port module core to register a set of callbacks with the line cards core. See detailed description with examples in the commit message. Patches #5-#6 do the same with regards to thermal / hwmon support, so that user space will be able to monitor the temperature of various components on the line card when it becomes active. Jiri Pirko (1): mlxsw: core_linecards: Introduce ops for linecards status change tracking Vadim Pasternak (5): mlxsw: core: Add bus argument to environment init API mlxsw: core_env: Split module power mode setting to a separate function mlxsw: core_env: Add interfaces for line card initialization and de-initialization mlxsw: core_thermal: Add interfaces for line card initialization and de-initialization mlxsw: core_hwmon: Add interfaces for line card initialization and de-initialization drivers/net/ethernet/mellanox/mlxsw/core.c | 2 +- drivers/net/ethernet/mellanox/mlxsw/core.h | 17 ++ .../net/ethernet/mellanox/mlxsw/core_env.c | 213 ++++++++++++++++-- .../net/ethernet/mellanox/mlxsw/core_env.h | 4 +- .../net/ethernet/mellanox/mlxsw/core_hwmon.c | 84 +++++++ .../ethernet/mellanox/mlxsw/core_linecards.c | 137 +++++++++++ .../ethernet/mellanox/mlxsw/core_thermal.c | 74 ++++++ 7 files changed, 513 insertions(+), 18 deletions(-)