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RDMA/mlx5: Add flow actions support to raw create flow

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Support attaching flow actions to a flow rule via raw create flow.
For now only NIC RX path is supported. This change requires to export
flow resources management functions so we can maintain proper bookkeeping
of flow actions.

Signed-off-by: Mark Bloch <markb@mellanox.com>
Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Mark Bloch
2018-09-06 17:27:06 +03:00
committed by Jason Gunthorpe
parent b823dd6d86
commit fa76d24ee0
4 changed files with 50 additions and 8 deletions
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40
drivers/infiniband/hw/mlx5/flow.c
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@@ -58,12 +58,15 @@ static const struct uverbs_attr_spec mlx5_ib_flow_type[] = {
},
};
#define MLX5_IB_CREATE_FLOW_MAX_FLOW_ACTIONS 2
static int UVERBS_HANDLER(MLX5_IB_METHOD_CREATE_FLOW)(
struct ib_uverbs_file *file, struct uverbs_attr_bundle *attrs)
{
struct mlx5_flow_act flow_act = {.flow_tag = MLX5_FS_DEFAULT_FLOW_TAG};
struct mlx5_ib_flow_handler *flow_handler;
struct mlx5_ib_flow_matcher *fs_matcher;
struct ib_uobject **arr_flow_actions;
struct ib_uflow_resources *uflow_res;
void *devx_obj;
int dest_id, dest_type;
void *cmd_in;
@@ -73,6 +76,7 @@ static int UVERBS_HANDLER(MLX5_IB_METHOD_CREATE_FLOW)(
struct ib_uobject *uobj =
uverbs_attr_get_uobject(attrs, MLX5_IB_ATTR_CREATE_FLOW_HANDLE);
struct mlx5_ib_dev *dev = to_mdev(uobj->context->device);
int len, ret, i;
if (!capable(CAP_NET_RAW))
return -EPERM;
@@ -124,15 +128,38 @@ static int UVERBS_HANDLER(MLX5_IB_METHOD_CREATE_FLOW)(
MLX5_IB_ATTR_CREATE_FLOW_MATCH_VALUE);
fs_matcher = uverbs_attr_get_obj(attrs,
MLX5_IB_ATTR_CREATE_FLOW_MATCHER);
uflow_res = flow_resources_alloc(MLX5_IB_CREATE_FLOW_MAX_FLOW_ACTIONS);
if (!uflow_res)
return -ENOMEM;
len = uverbs_attr_get_uobjs_arr(attrs,
MLX5_IB_ATTR_CREATE_FLOW_ARR_FLOW_ACTIONS, &arr_flow_actions);
for (i = 0; i < len; i++) {
struct mlx5_ib_flow_action *maction =
to_mflow_act(arr_flow_actions[i]->object);
ret = parse_flow_flow_action(maction, false, &flow_act);
if (ret)
goto err_out;
flow_resources_add(uflow_res, IB_FLOW_SPEC_ACTION_HANDLE,
arr_flow_actions[i]->object);
}
flow_handler = mlx5_ib_raw_fs_rule_add(dev, fs_matcher, &flow_act,
cmd_in, inlen,
dest_id, dest_type);
if (IS_ERR(flow_handler))
return PTR_ERR(flow_handler);
if (IS_ERR(flow_handler)) {
ret = PTR_ERR(flow_handler);
goto err_out;
}
ib_set_flow(uobj, &flow_handler->ibflow, qp, &dev->ib_dev, NULL);
ib_set_flow(uobj, &flow_handler->ibflow, qp, &dev->ib_dev, uflow_res);
return 0;
err_out:
ib_uverbs_flow_resources_free(uflow_res);
return ret;
}
static int flow_matcher_cleanup(struct ib_uobject *uobject,
@@ -459,7 +486,12 @@ DECLARE_UVERBS_NAMED_METHOD(
UVERBS_ACCESS_READ),
UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_DEST_DEVX,
MLX5_IB_OBJECT_DEVX_OBJ,
UVERBS_ACCESS_READ));
UVERBS_ACCESS_READ),
UVERBS_ATTR_IDRS_ARR(MLX5_IB_ATTR_CREATE_FLOW_ARR_FLOW_ACTIONS,
UVERBS_OBJECT_FLOW_ACTION,
UVERBS_ACCESS_READ, 1,
MLX5_IB_CREATE_FLOW_MAX_FLOW_ACTIONS,
UA_OPTIONAL));
DECLARE_UVERBS_NAMED_METHOD_DESTROY(
MLX5_IB_METHOD_DESTROY_FLOW,