netdev - [PATCH net-next 02/10] net/mlx5e: Check IPsec packet offload tunnel capabilities

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Message-Id: <e3b42fa8ccd8e1d1cfda9c8d34a198b43c9d7769.1681106636.git.leonro@nvidia.com>
Date:   Mon, 10 Apr 2023 09:19:04 +0300
From:   Leon Romanovsky <leon@...nel.org>
To:     "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>
Cc:     Leon Romanovsky <leonro@...dia.com>,
        Steffen Klassert <steffen.klassert@...unet.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        netdev@...r.kernel.org, Saeed Mahameed <saeedm@...dia.com>,
        Raed Salem <raeds@...dia.com>, Emeel Hakim <ehakim@...dia.com>
Subject: [PATCH net-next 02/10] net/mlx5e: Check IPsec packet offload tunnel capabilities

From: Leon Romanovsky <leonro@...dia.com>

Validate tunnel mode support for IPsec packet offload.

Signed-off-by: Leon Romanovsky <leonro@...dia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.h    | 1 +
 .../ethernet/mellanox/mlx5/core/en_accel/ipsec_offload.c    | 6 ++++++
 2 files changed, 7 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.h b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.h
index 52890d7dce6b..bb89e18b17b4 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.h
@@ -107,6 +107,7 @@ enum mlx5_ipsec_cap {
 	MLX5_IPSEC_CAP_PACKET_OFFLOAD	= 1 << 2,
 	MLX5_IPSEC_CAP_ROCE             = 1 << 3,
 	MLX5_IPSEC_CAP_PRIO             = 1 << 4,
+	MLX5_IPSEC_CAP_TUNNEL           = 1 << 5,
 };
 
 struct mlx5e_priv;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_offload.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_offload.c
index 5fddb86bb35e..df90e19066bc 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_offload.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_offload.c
@@ -48,6 +48,12 @@ u32 mlx5_ipsec_device_caps(struct mlx5_core_dev *mdev)
 		if (MLX5_CAP_FLOWTABLE_NIC_TX(mdev, ignore_flow_level) &&
 		    MLX5_CAP_FLOWTABLE_NIC_RX(mdev, ignore_flow_level))
 			caps |= MLX5_IPSEC_CAP_PRIO;
+
+		if (MLX5_CAP_FLOWTABLE_NIC_TX(mdev,
+					      reformat_l2_to_l3_esp_tunnel) &&
+		    MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
+					      reformat_l3_esp_tunnel_to_l2))
+			caps |= MLX5_IPSEC_CAP_TUNNEL;
 	}
 
 	if (mlx5_get_roce_state(mdev) &&
-- 
2.39.2