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Commit 349705c1 authored by Matan Barak's avatar Matan Barak Committed by Jason Gunthorpe
Browse files

IB/mlx5: Add modify_flow_action_esp verb 



Adding implementation in mlx5 driver to modify action_xfrm object. This
merely call the accel layer. Currently a user can modify only the
ESN parameters.

Reviewed-by: default avatarYishai Hadas <yishaih@mellanox.com>
Signed-off-by: default avatarMatan Barak <matanb@mellanox.com>
Signed-off-by: default avatarAviad Yehezkel <aviadye@mellanox.com>
Signed-off-by: default avatarLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@mellanox.com>
parent c6475a0b

drivers/infiniband/hw/mlx5/main.c

+49 −0
Original line number Diff line number Diff line
@@ -3201,6 +3201,54 @@ mlx5_ib_create_flow_action_esp(struct ib_device *device, 
	return ERR_PTR(err);

}



static int

mlx5_ib_modify_flow_action_esp(struct ib_flow_action *action,

			       const struct ib_flow_action_attrs_esp *attr,

			       struct uverbs_attr_bundle *attrs)

{

	struct mlx5_ib_flow_action *maction = to_mflow_act(action);

	struct mlx5_accel_esp_xfrm_attrs accel_attrs;

	int err = 0;



	if (attr->keymat || attr->replay || attr->encap ||

	    attr->spi || attr->seq || attr->tfc_pad ||

	    attr->hard_limit_pkts ||

	    (attr->flags & ~(IB_FLOW_ACTION_ESP_FLAGS_ESN_TRIGGERED |

			     IB_FLOW_ACTION_ESP_FLAGS_MOD_ESP_ATTRS |

			     IB_UVERBS_FLOW_ACTION_ESP_FLAGS_ESN_NEW_WINDOW)))

		return -EOPNOTSUPP;



	/* Only the ESN value or the MLX5_ACCEL_ESP_FLAGS_ESN_STATE_OVERLAP can

	 * be modified.

	 */

	if (!(maction->esp_aes_gcm.ib_flags &

	      IB_FLOW_ACTION_ESP_FLAGS_ESN_TRIGGERED) &&

	    attr->flags & (IB_FLOW_ACTION_ESP_FLAGS_ESN_TRIGGERED |

			   IB_UVERBS_FLOW_ACTION_ESP_FLAGS_ESN_NEW_WINDOW))

		return -EINVAL;



	memcpy(&accel_attrs, &maction->esp_aes_gcm.ctx->attrs,

	       sizeof(accel_attrs));



	accel_attrs.esn = attr->esn;

	if (attr->flags & IB_UVERBS_FLOW_ACTION_ESP_FLAGS_ESN_NEW_WINDOW)

		accel_attrs.flags |= MLX5_ACCEL_ESP_FLAGS_ESN_STATE_OVERLAP;

	else

		accel_attrs.flags &= ~MLX5_ACCEL_ESP_FLAGS_ESN_STATE_OVERLAP;



	err = mlx5_accel_esp_modify_xfrm(maction->esp_aes_gcm.ctx,

					 &accel_attrs);

	if (err)

		return err;



	maction->esp_aes_gcm.ib_flags &=

		~IB_UVERBS_FLOW_ACTION_ESP_FLAGS_ESN_NEW_WINDOW;

	maction->esp_aes_gcm.ib_flags |=

		attr->flags & IB_UVERBS_FLOW_ACTION_ESP_FLAGS_ESN_NEW_WINDOW;



	return 0;

}



static int mlx5_ib_destroy_flow_action(struct ib_flow_action *action)

{

	struct mlx5_ib_flow_action *maction = to_mflow_act(action);
@@ -4927,6 +4975,7 @@ int mlx5_ib_stage_caps_init(struct mlx5_ib_dev *dev) 
			(1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW);

	dev->ib_dev.create_flow_action_esp = mlx5_ib_create_flow_action_esp;

	dev->ib_dev.destroy_flow_action = mlx5_ib_destroy_flow_action;

	dev->ib_dev.modify_flow_action_esp = mlx5_ib_modify_flow_action_esp;

	dev->ib_dev.driver_id = RDMA_DRIVER_MLX5;



	err = init_node_data(dev);