On Tue, Sep 29, 2020 at 10:21:05AM +0100, Lorenz Bauer wrote:
On Tue, 29 Sep 2020 at 07:06, Martin KaFai Lau kafai@fb.com wrote:
...
/* We need a temporary buffer on the stack, since the verifier doesn't
* let us use the pointer from the context as an argument to the helper.
Is it something that can be improved later?
others LGTM.
Yeah, I think so. We'd need to do something similar to your sock_common work for PTR_TO_RDONLY_BUF_OR_NULL. The fact that the pointer is read only makes it a bit more difficult I think. After
I thought the key arg should be used as read-only in the map's helper. or there is map type's helper that modifies the key?
that, a user could just plug the key into map_update_elem directly. Alternatively, allow specialising map_ops per context.