On 02/05/2018 07:17 PM, John Fastabend wrote:
[...]
> @@ -124,6 +145,34 @@ int tcp_set_ulp(struct sock *sk, const char *name)
> if (!ulp_ops)
> return -ENOENT;
>
> + if (!ulp_ops->user_visible) {
> + module_put(ulp_ops->owner);
> + return -ENOENT;
>
Create a UID field and enum that can be used to assign ULPs to
sockets. This saves a set of string comparisons if the ULP id
is known.
For sockmap, which is added in the next patches, a ULP is used to
hook into TCP sockets close state. In this case the ULP being added
is done at map insert time an
