From 46799a41d292bf9970a847ce2392cf6afb845014 Mon Sep 17 00:00:00 2001 From: Linu Cherian Date: Tue, 5 Nov 2024 18:26:20 +0530 Subject: [PATCH] devlink: Add documentation for OcteonTx2 AF Add documentation for the following devlink params - npc_mcam_high_zone_percent - npc_def_rule_cntr - nix_maxlf Signed-off-by: Linu Cherian Link: https://patch.msgid.link/20241105125620.2114301-4-lcherian@marvell.com Signed-off-by: Jakub Kicinski --- .../networking/devlink/octeontx2.rst | 21 +++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/Documentation/networking/devlink/octeontx2.rst b/Documentation/networking/devlink/octeontx2.rst index d33a90dd44bf2..84206537aedbc 100644 --- a/Documentation/networking/devlink/octeontx2.rst +++ b/Documentation/networking/devlink/octeontx2.rst @@ -40,6 +40,27 @@ 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. + * - ``npc_mcam_high_zone_percent`` + - u8 + - runtime + - Use to set the number of high priority zone entries in NPC MCAM that can be allocated + by a user, out of the three priority zone categories high, mid and low. + * - ``npc_def_rule_cntr`` + - bool + - runtime + - Use to enable or disable hit counters for the default rules in NPC MCAM. + Its not guaranteed that counters gets enabled and mapped to all the default rules, + since the counters are scarce and driver follows a best effort approach. + The default rule serves as the primary packet steering rule for a specific PF or VF, + based on its DMAC address which is installed by AF driver as part of its initialization. + Sample command to read hit counters for default rule from debugfs is as follows, + cat /sys/kernel/debug/cn10k/npc/mcam_rules + * - ``nix_maxlf`` + - u16 + - runtime + - Use to set the maximum number of LFs in NIX hardware block. This would be useful + to increase the availability of default resources allocated to enabled LFs like + MCAM entries for example. The ``octeontx2 PF`` driver implements the following driver-specific parameters. -- 2.50.1