Cong Wang wrote:
> On Fri, Mar 5, 2021 at 5:55 PM John Fastabend <john.fastabend@xxxxxxxxx> wrote:
> >
[...]
> > > // tcp_bpf_prots->unhash == sock_map_unhash
> > > sk_psock_restore_proto();
> > > // Now tcp_bpf_prots->unhash is inet_unhash
> > > ...
> > > sk_psock_update_proto();
> > > // sk->sk_proto is now tcp_bpf_prots again,
> > > // so its ->unhash now is inet_unhash
> > > // but it should be sock_map_unhash here
> >
> > Right, we can fix this on the TLS side. I'll push a fix shortly.
>
> Are you still working on this? If kTLS still needs it, then we can
> have something like this:
Testing a fix now I will flush it out tomorrow. The below is not
really correct either it just moves the issue so it only impacts
TLS.
>
> diff --git a/include/linux/skmsg.h b/include/linux/skmsg.h
> index 8edbbf5f2f93..5eb617df7f48 100644
> --- a/include/linux/skmsg.h
> +++ b/include/linux/skmsg.h
> @@ -349,8 +349,8 @@ static inline void sk_psock_update_proto(struct sock *sk,
> static inline void sk_psock_restore_proto(struct sock *sk,
> struct sk_psock *psock)
> {
> - sk->sk_prot->unhash = psock->saved_unhash;
> if (inet_csk_has_ulp(sk)) {
> + sk->sk_prot->unhash = psock->saved_unhash;
> tcp_update_ulp(sk, psock->sk_proto, psock->saved_write_space);
> } else {
> sk->sk_write_space = psock->saved_write_space;
>
>
> Thanks.
