On Wed, 2017-09-20 at 18:54 +0200, Paolo Abeni wrote:
> Noref sk do not carry a socket refcount, are valid
> only inside the current RCU section and must be
> explicitly cleared before exiting such section.
>
> They will be used in a later patch to allow early demux
> without sock refcounting.
> +/* dummy destructor used by noref sockets */
> +void sock_dummyfree(struct sk_buff *skb)
> +{
BUG();
> +}
> +EXPORT_SYMBOL(sock_dummyfree);
> +
I do not see how you ensure we do not leave RCU section with an skb
destructor pointing to this sock_dummyfree()
This patch series looks quite dangerous to me.
Do we really have real applications using connected UDP sockets and
wanting very high pps throughput ?
I am pretty sure the bottleneck is the sender part.
