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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: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Aviad Yehezkel <aviadye@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Matan Barak 2018-03-28 09:27:51 +03:00 committed by Jason Gunthorpe
parent c6475a0bca
commit 349705c193
1 changed files with 49 additions and 0 deletions
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49
drivers/infiniband/hw/mlx5/main.c
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@ -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);