netdev - [PATCH net-next 1/4] mlxsw: cmd: Edit the comment of 'max_lag' field in CONFIG

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Message-ID: <cd4ddf9d7b6825072402f0c7e0f02d518dac5e3a.1661527928.git.petrm@nvidia.com>
Date:   Fri, 26 Aug 2022 18:06:49 +0200
From:   Petr Machata <petrm@...dia.com>
To:     "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, <netdev@...r.kernel.org>
CC:     Ido Schimmel <idosch@...dia.com>, Amit Cohen <amcohen@...dia.com>,
        "Petr Machata" <petrm@...dia.com>, <mlxsw@...dia.com>
Subject: [PATCH net-next 1/4] mlxsw: cmd: Edit the comment of 'max_lag' field in CONFIG_PROFILE

From: Amit Cohen <amcohen@...dia.com>

Starting from Spectrum-4, the maximum number of LAG IDs can be configured
by software via CONFIG_PROFILE command during driver initialization.

Edit the comment of 'max_lag' field to mention that this field is reserved
in Spectrum-1/2/3 and describe firmware behavior.

Signed-off-by: Amit Cohen <amcohen@...dia.com>
Reviewed-by: Ido Schimmel <idosch@...dia.com>
Reviewed-by: Petr Machata <petrm@...dia.com>
Signed-off-by: Petr Machata <petrm@...dia.com>
---
 drivers/net/ethernet/mellanox/mlxsw/cmd.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/cmd.h b/drivers/net/ethernet/mellanox/mlxsw/cmd.h
index 60232fb8ccd7..09bef04b11d1 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/cmd.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/cmd.h
@@ -703,6 +703,9 @@ MLXSW_ITEM32(cmd_mbox, config_profile, max_vepa_channels, 0x10, 0, 8);
 
 /* cmd_mbox_config_profile_max_lag
  * Maximum number of LAG IDs requested.
+ * Reserved when Spectrum-1/2/3, supported from Spectrum-4 and above.
+ * For Spectrum-4, firmware sets 128 for values between 1-128 and 256 for values
+ * between 129-256.
  */
 MLXSW_ITEM32(cmd_mbox, config_profile, max_lag, 0x14, 0, 16);
 
-- 
2.35.3