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| author | Sai Krishna <saikrishnag@marvell.com> | 2024-06-20 10:59:49 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2024-06-21 12:28:47 +0200 |
| commit | 39c469188b6d20db107c454cac3ddea941718850 (patch) | |
| tree | 9268859d4ba54c4a31a353b27bcba327e84c5f53 /Documentation/networking | |
| parent | docs: net: document guidance of implementing the SR-IOV NDOs (diff) | |
| download | linux-39c469188b6d20db107c454cac3ddea941718850.tar.xz linux-39c469188b6d20db107c454cac3ddea941718850.zip | |
octeontx2-pf: Add ucast filter count configurability via devlink.
The existing method of reserving unicast filter count leads to wasted
MCAM entries if the functionality is not used or fewer entries are used.
Furthermore, the amount of MCAM entries differs amongst Octeon SoCs.
We implemented a means to adjust the UC filter count via devlink,
allowing for better use of MCAM entries across Netdev apps.
commands:
To get the current unicast filter count
# devlink dev param show pci/0002:02:00.0 name unicast_filter_count
To change/set the unicast filter count
# devlink dev param set pci/0002:02:00.0 name unicast_filter_count
value 5 cmode runtime
Signed-off-by: Sai Krishna <saikrishnag@marvell.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/networking')
| -rw-r--r-- | Documentation/networking/devlink/octeontx2.rst | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/Documentation/networking/devlink/octeontx2.rst b/Documentation/networking/devlink/octeontx2.rst index 610de99b728a..d33a90dd44bf 100644 --- a/Documentation/networking/devlink/octeontx2.rst +++ b/Documentation/networking/devlink/octeontx2.rst @@ -40,3 +40,19 @@ The ``octeontx2 AF`` driver implements the following driver-specific parameters. - runtime - Use to set the quantum which hardware uses for scheduling among transmit queues. Hardware uses weighted DWRR algorithm to schedule among all transmit queues. + +The ``octeontx2 PF`` driver implements the following driver-specific parameters. + +.. list-table:: Driver-specific parameters implemented + :widths: 5 5 5 85 + + * - Name + - Type + - Mode + - Description + * - ``unicast_filter_count`` + - u8 + - runtime + - Set the maximum number of unicast filters that can be programmed for + the device. This can be used to achieve better device resource + utilization, avoiding over consumption of unused MCAM table entries. |