netdev - [PATCH xfrm-next 11/26] net/mlx5e: Create Advanced Steering Operation object for IPsec

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Date:   Tue, 16 Aug 2022 13:37:59 +0300
From:   Leon Romanovsky <leon@...nel.org>
To:     Steffen Klassert <steffen.klassert@...unet.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Saeed Mahameed <saeedm@...dia.com>
Cc:     Leon Romanovsky <leonro@...dia.com>,
        Eric Dumazet <edumazet@...gle.com>, netdev@...r.kernel.org,
        Paolo Abeni <pabeni@...hat.com>, Raed Salem <raeds@...dia.com>,
        ipsec-devel <devel@...ux-ipsec.org>
Subject: [PATCH xfrm-next 11/26] net/mlx5e: Create Advanced Steering Operation object for IPsec

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

Setup the ASO (Advanced Steering Operation) object that is needed
for IPsec to interact with SW stack about various fast changing
events: replay window, lifetime limits,  e.t.c

Reviewed-by: Raed Salem <raeds@...dia.com>
Signed-off-by: Leon Romanovsky <leonro@...dia.com>
---
 .../mellanox/mlx5/core/en_accel/ipsec.c       | 11 +++++++
 .../mellanox/mlx5/core/en_accel/ipsec.h       |  6 ++++
 .../mlx5/core/en_accel/ipsec_offload.c        | 30 +++++++++++++++++++
 3 files changed, 47 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c
index f8ba2d7581e4..f65305281ac4 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c
@@ -378,6 +378,12 @@ int mlx5e_ipsec_init(struct mlx5e_priv *priv)
 		goto err_wq;
 	}
 
+	if (mlx5_ipsec_device_caps(priv->mdev) & MLX5_IPSEC_CAP_FULL_OFFLOAD) {
+		ret = mlx5e_ipsec_aso_init(ipsec);
+		if (ret)
+			goto err_aso;
+	}
+
 	ret = mlx5e_accel_ipsec_fs_init(ipsec);
 	if (ret)
 		goto err_fs_init;
@@ -388,6 +394,9 @@ int mlx5e_ipsec_init(struct mlx5e_priv *priv)
 	return 0;
 
 err_fs_init:
+	if (mlx5_ipsec_device_caps(priv->mdev) & MLX5_IPSEC_CAP_FULL_OFFLOAD)
+		mlx5e_ipsec_aso_cleanup(ipsec);
+err_aso:
 	destroy_workqueue(ipsec->wq);
 err_wq:
 	kfree(ipsec);
@@ -402,6 +411,8 @@ void mlx5e_ipsec_cleanup(struct mlx5e_priv *priv)
 		return;
 
 	mlx5e_accel_ipsec_fs_cleanup(ipsec);
+	if (mlx5_ipsec_device_caps(priv->mdev) & MLX5_IPSEC_CAP_FULL_OFFLOAD)
+		mlx5e_ipsec_aso_cleanup(ipsec);
 	destroy_workqueue(ipsec->wq);
 	kfree(ipsec);
 	priv->ipsec = NULL;
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 3bba62f54604..2be7fb7db456 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.h
@@ -39,6 +39,7 @@
 #include <linux/mlx5/device.h>
 #include <net/xfrm.h>
 #include <linux/idr.h>
+#include "lib/aso.h"
 
 #define MLX5E_IPSEC_SADB_RX_BITS 10
 #define MLX5E_IPSEC_ESN_SCOPE_MID 0x80000000L
@@ -107,6 +108,8 @@ struct mlx5e_ipsec {
 	struct mlx5e_ipsec_rx *rx_ipv4;
 	struct mlx5e_ipsec_rx *rx_ipv6;
 	struct mlx5e_ipsec_tx *tx;
+	struct mlx5_aso *aso;
+	u32 pdn;
 };
 
 struct mlx5e_ipsec_esn_state {
@@ -160,6 +163,9 @@ u32 mlx5_ipsec_device_caps(struct mlx5_core_dev *mdev);
 void mlx5_accel_esp_modify_xfrm(struct mlx5e_ipsec_sa_entry *sa_entry,
 				const struct mlx5_accel_esp_xfrm_attrs *attrs);
 
+int mlx5e_ipsec_aso_init(struct mlx5e_ipsec *ipsec);
+void mlx5e_ipsec_aso_cleanup(struct mlx5e_ipsec *ipsec);
+
 static inline struct mlx5_core_dev *
 mlx5e_ipsec_sa2dev(struct mlx5e_ipsec_sa_entry *sa_entry)
 {
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 1e586db009be..7ebdfe560398 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
@@ -211,3 +211,33 @@ void mlx5_accel_esp_modify_xfrm(struct mlx5e_ipsec_sa_entry *sa_entry,
 
 	memcpy(&sa_entry->attrs, attrs, sizeof(sa_entry->attrs));
 }
+
+int mlx5e_ipsec_aso_init(struct mlx5e_ipsec *ipsec)
+{
+	struct mlx5_core_dev *mdev = ipsec->mdev;
+	int err;
+
+	err = mlx5_core_alloc_pd(mdev, &ipsec->pdn);
+	if (err)
+		return err;
+
+	ipsec->aso = mlx5_aso_create(mdev, ipsec->pdn);
+	if (IS_ERR(ipsec->aso)) {
+		err = PTR_ERR(ipsec->aso);
+		goto err_aso_create;
+	}
+
+	return 0;
+
+err_aso_create:
+	mlx5_core_dealloc_pd(mdev, ipsec->pdn);
+	return err;
+}
+
+void mlx5e_ipsec_aso_cleanup(struct mlx5e_ipsec *ipsec)
+{
+	struct mlx5_core_dev *mdev = ipsec->mdev;
+
+	mlx5_aso_destroy(ipsec->aso);
+	mlx5_core_dealloc_pd(mdev, ipsec->pdn);
+}
-- 
2.37.2