linux-kernel - [PATCH mlx5-next 2/2] net/mlx5: IFC add balance ID and LAG per MP group bits

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Message-ID: <1758521191-814350-3-git-send-email-tariqt@nvidia.com>
Date: Mon, 22 Sep 2025 09:06:31 +0300
From: Tariq Toukan <tariqt@...dia.com>
To: Saeed Mahameed <saeedm@...dia.com>, Leon Romanovsky <leon@...nel.org>
CC: Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>, Andrew Lunn <andrew+netdev@...n.ch>, "David
 S. Miller" <davem@...emloft.net>, Tariq Toukan <tariqt@...dia.com>, "Mark
 Bloch" <mbloch@...dia.com>, <netdev@...r.kernel.org>,
	<linux-rdma@...r.kernel.org>, <linux-kernel@...r.kernel.org>, Gal Pressman
	<gal@...dia.com>
Subject: [PATCH mlx5-next 2/2] net/mlx5: IFC add balance ID and LAG per MP group bits

From: Mark Bloch <mbloch@...dia.com>

Add interface definitions for load balance ID and LAG per multiplane group
functionality. This patch introduces the hardware capability bits needed
to support balance ID in multiplane LAG configurations.

The new fields include:
- load_balance_id: 4-bit field for balance identifier.
- lag_per_mp_group: capability bit for LAG per multiplane group support.

These interface additions are prerequisites for implementing balance ID
support in the MLX5 driver.

Signed-off-by: Mark Bloch <mbloch@...dia.com>
Reviewed-by: Shay Drori <shayd@...dia.com>
Signed-off-by: Tariq Toukan <tariqt@...dia.com>
---
 include/linux/mlx5/mlx5_ifc.h | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h
index c0f5fee7a4a5..07614cd95bed 100644
--- a/include/linux/mlx5/mlx5_ifc.h
+++ b/include/linux/mlx5/mlx5_ifc.h
@@ -2235,12 +2235,16 @@ struct mlx5_ifc_cmd_hca_cap_2_bits {
 	u8	   reserved_at_440[0x8];
 	u8	   max_num_eqs_24b[0x18];
 
-	u8         reserved_at_460[0x160];
+	u8         reserved_at_460[0x144];
+	u8         load_balance_id[0x4];
+	u8         reserved_at_5a8[0x18];
 
 	u8         query_adjacent_functions_id[0x1];
 	u8         ingress_egress_esw_vport_connect[0x1];
 	u8         function_id_type_vhca_id[0x1];
-	u8         reserved_at_5c3[0xd];
+	u8         reserved_at_5c3[0x1];
+	u8         lag_per_mp_group[0x1];
+	u8         reserved_at_5c5[0xb];
 	u8         delegate_vhca_management_profiles[0x10];
 
 	u8         delegated_vhca_max[0x10];
-- 
2.31.1