net/mlx5: Remove ipsec_ops function table

There is only one IPsec implementation and ipsec_ops is not needed
at all in this situation. Together with removal of ipsec_ops, we can
drop the entry checks as these functions are called for IPsec devices
only.

Link: https://lore.kernel.org/r/bc8dd1c8a77b65dbf5e2cf92c813ffaca2505c5f.1649232994.git.leonro@nvidia.com
Reviewed-by: Raed Salem <raeds@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_fs.h b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_fs.h
index b3e23aa..b709539 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_fs.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_fs.h
@@ -9,7 +9,6 @@
 #include "ipsec_offload.h"
 #include "en/fs.h"
 
-#ifdef CONFIG_MLX5_EN_IPSEC
 void mlx5e_accel_ipsec_fs_cleanup(struct mlx5e_priv *priv);
 int mlx5e_accel_ipsec_fs_init(struct mlx5e_priv *priv);
 int mlx5e_accel_ipsec_fs_add_rule(struct mlx5e_priv *priv,
@@ -19,8 +18,4 @@ int mlx5e_accel_ipsec_fs_add_rule(struct mlx5e_priv *priv,
 void mlx5e_accel_ipsec_fs_del_rule(struct mlx5e_priv *priv,
                                   struct mlx5_accel_esp_xfrm_attrs *attrs,
                                   struct mlx5e_ipsec_rule *ipsec_rule);
-#else
-static inline void mlx5e_accel_ipsec_fs_cleanup(struct mlx5e_priv *priv) {}
-static inline int mlx5e_accel_ipsec_fs_init(struct mlx5e_priv *priv) { return 0; }
-#endif
 #endif /* __MLX5_IPSEC_STEERING_H__ */

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 7ae2d30..f0f44bd 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_offload.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_offload.c
@@ -106,8 +106,7 @@ mlx5_ipsec_offload_esp_validate_xfrm_attrs(struct mlx5_core_dev *mdev,
 
 static struct mlx5_accel_esp_xfrm *
 mlx5_ipsec_offload_esp_create_xfrm(struct mlx5_core_dev *mdev,
-                                  const struct mlx5_accel_esp_xfrm_attrs *attrs,
-                                  u32 flags)
+                                  const struct mlx5_accel_esp_xfrm_attrs *attrs)
 {
        struct mlx5_ipsec_esp_xfrm *mxfrm;
        int err = 0;
@@ -286,11 +285,6 @@ static void mlx5_ipsec_offload_delete_sa_ctx(void *context)
        mutex_unlock(&mxfrm->lock);
 }
 
-static int mlx5_ipsec_offload_init(struct mlx5_core_dev *mdev)
-{
-       return 0;
-}
-
 static int mlx5_modify_ipsec_obj(struct mlx5_core_dev *mdev,
                                 struct mlx5_ipsec_obj_attrs *attrs,
                                 u32 ipsec_id)
@@ -378,86 +372,12 @@ change_sw_xfrm_attrs:
        return err;
 }
 
-static const struct mlx5_accel_ipsec_ops ipsec_offload_ops = {
-       .create_hw_context = mlx5_ipsec_offload_create_sa_ctx,
-       .free_hw_context = mlx5_ipsec_offload_delete_sa_ctx,
-       .init = mlx5_ipsec_offload_init,
-       .esp_create_xfrm = mlx5_ipsec_offload_esp_create_xfrm,
-       .esp_destroy_xfrm = mlx5_ipsec_offload_esp_destroy_xfrm,
-       .esp_modify_xfrm = mlx5_ipsec_offload_esp_modify_xfrm,
-};
-
-static const struct mlx5_accel_ipsec_ops *
-mlx5_ipsec_offload_ops(struct mlx5_core_dev *mdev)
-{
-       if (!mlx5_ipsec_device_caps(mdev))
-               return NULL;
-
-       return &ipsec_offload_ops;
-}
-
-void mlx5_accel_ipsec_init(struct mlx5_core_dev *mdev)
-{
-       const struct mlx5_accel_ipsec_ops *ipsec_ops;
-       int err = 0;
-
-       ipsec_ops = mlx5_ipsec_offload_ops(mdev);
-       if (!ipsec_ops || !ipsec_ops->init) {
-               mlx5_core_dbg(mdev, "IPsec ops is not supported\n");
-               return;
-       }
-
-       err = ipsec_ops->init(mdev);
-       if (err) {
-               mlx5_core_warn_once(
-                       mdev, "Failed to start IPsec device, err = %d\n", err);
-               return;
-       }
-
-       mdev->ipsec_ops = ipsec_ops;
-}
-
-void mlx5_accel_ipsec_cleanup(struct mlx5_core_dev *mdev)
-{
-       const struct mlx5_accel_ipsec_ops *ipsec_ops = mdev->ipsec_ops;
-
-       if (!ipsec_ops || !ipsec_ops->cleanup)
-               return;
-
-       ipsec_ops->cleanup(mdev);
-}
-
-unsigned int mlx5_accel_ipsec_counters_count(struct mlx5_core_dev *mdev)
-{
-       const struct mlx5_accel_ipsec_ops *ipsec_ops = mdev->ipsec_ops;
-
-       if (!ipsec_ops || !ipsec_ops->counters_count)
-               return -EOPNOTSUPP;
-
-       return ipsec_ops->counters_count(mdev);
-}
-
-int mlx5_accel_ipsec_counters_read(struct mlx5_core_dev *mdev, u64 *counters,
-                                  unsigned int count)
-{
-       const struct mlx5_accel_ipsec_ops *ipsec_ops = mdev->ipsec_ops;
-
-       if (!ipsec_ops || !ipsec_ops->counters_read)
-               return -EOPNOTSUPP;
-
-       return ipsec_ops->counters_read(mdev, counters, count);
-}
-
 void *mlx5_accel_esp_create_hw_context(struct mlx5_core_dev *mdev,
                                       struct mlx5_accel_esp_xfrm *xfrm,
                                       u32 *sa_handle)
 {
-       const struct mlx5_accel_ipsec_ops *ipsec_ops = mdev->ipsec_ops;
        __be32 saddr[4] = {}, daddr[4] = {};
 
-       if (!ipsec_ops || !ipsec_ops->create_hw_context)
-               return  ERR_PTR(-EOPNOTSUPP);
-
        if (!xfrm->attrs.is_ipv6) {
                saddr[3] = xfrm->attrs.saddr.a4;
                daddr[3] = xfrm->attrs.daddr.a4;
@@ -466,59 +386,37 @@ void *mlx5_accel_esp_create_hw_context(struct mlx5_core_dev *mdev,
                memcpy(daddr, xfrm->attrs.daddr.a6, sizeof(daddr));
        }
 
-       return ipsec_ops->create_hw_context(mdev, xfrm, saddr, daddr,
-                                           xfrm->attrs.spi,
-                                           xfrm->attrs.is_ipv6, sa_handle);
+       return mlx5_ipsec_offload_create_sa_ctx(mdev, xfrm, saddr, daddr,
+                                               xfrm->attrs.spi,
+                                               xfrm->attrs.is_ipv6, sa_handle);
 }
 
 void mlx5_accel_esp_free_hw_context(struct mlx5_core_dev *mdev, void *context)
 {
-       const struct mlx5_accel_ipsec_ops *ipsec_ops = mdev->ipsec_ops;
-
-       if (!ipsec_ops || !ipsec_ops->free_hw_context)
-               return;
-
-       ipsec_ops->free_hw_context(context);
+       mlx5_ipsec_offload_delete_sa_ctx(context);
 }
 
 struct mlx5_accel_esp_xfrm *
 mlx5_accel_esp_create_xfrm(struct mlx5_core_dev *mdev,
                           const struct mlx5_accel_esp_xfrm_attrs *attrs)
 {
-       const struct mlx5_accel_ipsec_ops *ipsec_ops = mdev->ipsec_ops;
        struct mlx5_accel_esp_xfrm *xfrm;
 
-       if (!ipsec_ops || !ipsec_ops->esp_create_xfrm)
-               return ERR_PTR(-EOPNOTSUPP);
-
-       xfrm = ipsec_ops->esp_create_xfrm(mdev, attrs, 0);
+       xfrm = mlx5_ipsec_offload_esp_create_xfrm(mdev, attrs);
        if (IS_ERR(xfrm))
                return xfrm;
 
        xfrm->mdev = mdev;
        return xfrm;
 }
-EXPORT_SYMBOL_GPL(mlx5_accel_esp_create_xfrm);
 
 void mlx5_accel_esp_destroy_xfrm(struct mlx5_accel_esp_xfrm *xfrm)
 {
-       const struct mlx5_accel_ipsec_ops *ipsec_ops = xfrm->mdev->ipsec_ops;
-
-       if (!ipsec_ops || !ipsec_ops->esp_destroy_xfrm)
-               return;
-
-       ipsec_ops->esp_destroy_xfrm(xfrm);
+       mlx5_ipsec_offload_esp_destroy_xfrm(xfrm);
 }
-EXPORT_SYMBOL_GPL(mlx5_accel_esp_destroy_xfrm);
 
 int mlx5_accel_esp_modify_xfrm(struct mlx5_accel_esp_xfrm *xfrm,
                               const struct mlx5_accel_esp_xfrm_attrs *attrs)
 {
-       const struct mlx5_accel_ipsec_ops *ipsec_ops = xfrm->mdev->ipsec_ops;
-
-       if (!ipsec_ops || !ipsec_ops->esp_modify_xfrm)
-               return -EOPNOTSUPP;
-
-       return ipsec_ops->esp_modify_xfrm(xfrm, attrs);
+       return mlx5_ipsec_offload_esp_modify_xfrm(xfrm, attrs);
 }
-EXPORT_SYMBOL_GPL(mlx5_accel_esp_modify_xfrm);

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_offload.h b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_offload.h
index 36e700b..7dac104 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_offload.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_offload.h
@@ -7,43 +7,8 @@
 #include <linux/mlx5/driver.h>
 #include <linux/mlx5/accel.h>
 
-#ifdef CONFIG_MLX5_EN_IPSEC
-
-unsigned int mlx5_accel_ipsec_counters_count(struct mlx5_core_dev *mdev);
-int mlx5_accel_ipsec_counters_read(struct mlx5_core_dev *mdev, u64 *counters,
-                                  unsigned int count);
-
 void *mlx5_accel_esp_create_hw_context(struct mlx5_core_dev *mdev,
                                       struct mlx5_accel_esp_xfrm *xfrm,
                                       u32 *sa_handle);
 void mlx5_accel_esp_free_hw_context(struct mlx5_core_dev *mdev, void *context);
-
-void mlx5_accel_ipsec_init(struct mlx5_core_dev *mdev);
-void mlx5_accel_ipsec_cleanup(struct mlx5_core_dev *mdev);
-
-struct mlx5_accel_ipsec_ops {
-       unsigned int (*counters_count)(struct mlx5_core_dev *mdev);
-       int (*counters_read)(struct mlx5_core_dev *mdev, u64 *counters,
-                            unsigned int count);
-       void *(*create_hw_context)(struct mlx5_core_dev *mdev,
-                                  struct mlx5_accel_esp_xfrm *xfrm,
-                                  const __be32 saddr[4], const __be32 daddr[4],
-                                  const __be32 spi, bool is_ipv6,
-                                  u32 *sa_handle);
-       void (*free_hw_context)(void *context);
-       int (*init)(struct mlx5_core_dev *mdev);
-       void (*cleanup)(struct mlx5_core_dev *mdev);
-       struct mlx5_accel_esp_xfrm *(*esp_create_xfrm)(
-               struct mlx5_core_dev *mdev,
-               const struct mlx5_accel_esp_xfrm_attrs *attrs, u32 flags);
-       int (*esp_modify_xfrm)(struct mlx5_accel_esp_xfrm *xfrm,
-                              const struct mlx5_accel_esp_xfrm_attrs *attrs);
-       void (*esp_destroy_xfrm)(struct mlx5_accel_esp_xfrm *xfrm);
-};
-
-#else
-static inline void mlx5_accel_ipsec_init(struct mlx5_core_dev *mdev) {}
-
-static inline void mlx5_accel_ipsec_cleanup(struct mlx5_core_dev *mdev) {}
-#endif /* CONFIG_MLX5_EN_IPSEC */
 #endif /* __MLX5_IPSEC_OFFLOAD_H__ */

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c
index 032de07..d504c8c 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c
@@ -1181,8 +1181,6 @@ static int mlx5_load(struct mlx5_core_dev *dev)
                goto err_fpga_start;
        }
 
-       mlx5_accel_ipsec_init(dev);
-
        err = mlx5_init_fs(dev);
        if (err) {
                mlx5_core_err(dev, "Failed to init flow steering\n");
@@ -1230,7 +1228,6 @@ err_vhca:
 err_set_hca:
        mlx5_cleanup_fs(dev);
 err_fs:
-       mlx5_accel_ipsec_cleanup(dev);
        mlx5_fpga_device_stop(dev);
 err_fpga_start:
        mlx5_rsc_dump_cleanup(dev);
@@ -1256,7 +1253,6 @@ static void mlx5_unload(struct mlx5_core_dev *dev)
        mlx5_sf_hw_table_destroy(dev);
        mlx5_vhca_event_stop(dev);
        mlx5_cleanup_fs(dev);
-       mlx5_accel_ipsec_cleanup(dev);
        mlx5_fpga_device_stop(dev);
        mlx5_rsc_dump_cleanup(dev);
        mlx5_hv_vhca_cleanup(dev->hv_vhca);

diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h
index 5af53c0..ff47d49 100644 (file)
--- a/include/linux/mlx5/driver.h
+++ b/include/linux/mlx5/driver.h
@@ -777,9 +777,6 @@ struct mlx5_core_dev {
        } roce;
 #ifdef CONFIG_MLX5_FPGA
        struct mlx5_fpga_device *fpga;
-#endif
-#ifdef CONFIG_MLX5_EN_IPSEC
-       const struct mlx5_accel_ipsec_ops *ipsec_ops;
 #endif
        struct mlx5_clock        clock;
        struct mlx5_ib_clock_info  *clock_info;