On Wed, Sep 05, 2018 at 10:38:42AM -0600, Jason Gunthorpe wrote:
> On Wed, Sep 05, 2018 at 08:20:44AM +0300, Leon Romanovsky wrote:
> > On Tue, Sep 04, 2018 at 03:58:23PM -0600, Jason Gunthorpe wrote:
> > > On Tue, Aug 28, 2018 at 02:18:51PM +0300, Leon Romanovsky wrote:
> > >
> > > > +static int
> > > > UVERBS_HANDLER(MLX5_IB_METHOD_FLOW_ACTION_CREATE_MODIFY_HEADER)(
> > > > + struct ib_uverbs_file *file,
> > > > + struct uverbs_attr_bundle *attrs)
> > > > +{
> > > > + struct ib_uobject *uobj = uverbs_attr_get_uobject(
> > > > + attrs, MLX5_IB_ATTR_CREATE_MODIFY_HEADER_HANDLE);
> > > > + struct mlx5_ib_dev *mdev = to_mdev(uobj->context->device);
> > > > + enum mlx5_ib_uapi_flow_table_type ft_type;
> > > > + struct ib_flow_action *action;
> > > > + size_t num_actions;
> > > > + void *in;
> > > > + int len;
> > > > + int ret;
> > > > +
> > > > + if (!mlx5_ib_modify_header_supported(mdev))
> > > > + return -EOPNOTSUPP;
> > > > +
> > > > + in = uverbs_attr_get_alloced_ptr(attrs,
> > > > + MLX5_IB_ATTR_CREATE_MODIFY_HEADER_ACTIONS_PRM);
> > > > + len = uverbs_attr_get_len(attrs,
> > > > + MLX5_IB_ATTR_CREATE_MODIFY_HEADER_ACTIONS_PRM);
> > > > +
> > > > + if (len % MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto))
> > > > + return -EINVAL;
> > > > +
> > > > + ret = uverbs_get_const(&ft_type, attrs,
> > > > +
> > > > MLX5_IB_ATTR_CREATE_MODIFY_HEADER_FT_TYPE);
> > > > + if (ret)
> > > > + return -EINVAL;
> > >
> > > This should be
> > >
> > > if (ret)
> > > return ret;
> > >
> > > Every call to uverbs_get_const is wrong in this same way..
> >
> > Right, from technical point of view uverbs_get_const can return EINVAL
> > only, and it is correct for now, but need to be changed to proper
> > "return ret".
>
> No, it can return ENOENT as well.Ahh, right, the "|| !def_val" part. Thanks > > Jason
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