From: Matan Barak <matanb@xxxxxxxxxxxx>
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: Yishai Hadas <yishaih@xxxxxxxxxxxx>
Signed-off-by: Matan Barak <matanb@xxxxxxxxxxxx>
Signed-off-by: Aviad Yehezkel <aviadye@xxxxxxxxxxxx>
Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
---
drivers/infiniband/hw/mlx5/main.c | 49 +++++++++++++++++++++++++++++++++++++++
1 file changed, 49 insertions(+)
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index a5fd56bc86c5..09822320446b 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -3211,6 +3211,54 @@ 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);
@@ -4937,6 +4985,7 @@ 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);
--
2.14.3
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