netdev - [net-next 01/16] net/mlx5: Add the log_min_mkey_entity

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Date:   Tue, 27 Sep 2022 13:35:56 -0700
From:   Saeed Mahameed <saeed@...nel.org>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Eric Dumazet <edumazet@...gle.com>
Cc:     Saeed Mahameed <saeedm@...dia.com>, netdev@...r.kernel.org,
        Tariq Toukan <tariqt@...dia.com>,
        Maxim Mikityanskiy <maximmi@...dia.com>
Subject: [net-next 01/16] net/mlx5: Add the log_min_mkey_entity_size capability

From: Maxim Mikityanskiy <maximmi@...dia.com>

Add the capability that will allow the driver to determine the minimal
MTT page size to be able to map the smallest possible pages in XSK. The
older firmwares that don't have this capability default to 12 (i.e.
4096-byte pages).

Signed-off-by: Maxim Mikityanskiy <maximmi@...dia.com>
Reviewed-by: Tariq Toukan <tariqt@...dia.com>
Reviewed-by: Saeed Mahameed <saeedm@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
 include/linux/mlx5/mlx5_ifc.h | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h
index bd577b99b146..28c07557bd99 100644
--- a/include/linux/mlx5/mlx5_ifc.h
+++ b/include/linux/mlx5/mlx5_ifc.h
@@ -1856,7 +1856,13 @@ struct mlx5_ifc_cmd_hca_cap_2_bits {
 	u8	   max_reformat_remove_size[0x8];
 	u8	   max_reformat_remove_offset[0x8];
 
-	u8	   reserved_at_c0[0x160];
+	u8	   reserved_at_c0[0xe0];
+
+	u8	   reserved_at_1a0[0xb];
+	u8	   log_min_mkey_entity_size[0x5];
+	u8	   reserved_at_1b0[0x10];
+
+	u8	   reserved_at_1c0[0x60];
 
 	u8	   reserved_at_220[0x1];
 	u8	   sw_vhca_id_valid[0x1];
-- 
2.37.3