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Date: Wed, 19 Jul 2023 12:26:54 +0300
From: Leon Romanovsky <leon@...nel.org>
To: Steffen Klassert <steffen.klassert@...unet.com>,
	Jakub Kicinski <kuba@...nel.org>
Cc: Leon Romanovsky <leonro@...dia.com>,
	Eric Dumazet <edumazet@...gle.com>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	netdev@...r.kernel.org,
	Paolo Abeni <pabeni@...hat.com>,
	Saeed Mahameed <saeedm@...dia.com>,
	Simon Horman <simon.horman@...igine.com>,
	Ilia Lin <quic_ilial@...cinc.com>
Subject: [PATCH net-next 2/4] net/mlx5e: Check for IPsec NAT-T support

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

Set relevant IPsec capability to indicate if flow steering supports UDP
encapsulation and decapsulation of IPsec ESP packets.

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 4e9887171508..b382b0cad7f6 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.h
@@ -110,6 +110,7 @@ enum mlx5_ipsec_cap {
 	MLX5_IPSEC_CAP_ROCE             = 1 << 3,
 	MLX5_IPSEC_CAP_PRIO             = 1 << 4,
 	MLX5_IPSEC_CAP_TUNNEL           = 1 << 5,
+	MLX5_IPSEC_CAP_ESPINUDP         = 1 << 6,
 };
 
 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 a3554bde3e07..5ff06263c5bd 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
@@ -54,6 +54,12 @@ u32 mlx5_ipsec_device_caps(struct mlx5_core_dev *mdev)
 		    MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
 					      reformat_l3_esp_tunnel_to_l2))
 			caps |= MLX5_IPSEC_CAP_TUNNEL;
+
+		if (MLX5_CAP_FLOWTABLE_NIC_TX(mdev,
+					      reformat_add_esp_transport_over_udp) &&
+		    MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
+					      reformat_del_esp_transport_over_udp))
+			caps |= MLX5_IPSEC_CAP_ESPINUDP;
 	}
 
 	if (mlx5_get_roce_state(mdev) &&
-- 
2.41.0


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