Denis V. Lunev wrote:
By the way, Patrick, this looks like nlk->pid == 0 if and only if this
is a kernel socket. Right?
Thats correct.
I have told with Alexey Kuznetsov and we have discrovered a way to get
rid of
skb_queue_tail(&sk->sk_receive_queue, skb);
sk->sk_data_ready(sk, len);
in netlink_sendskb/etc for kernel sockets and make user->kernel packets
processing truly synchronous.
The idea is simple, we should queue/wakeup in kernel->user direction and
simply call nlk->data_ready for user->kernel direction. This will remove
all the crap we have now. But we need a mark to determine the direction.
Which one will be better? (nlk->data_ready) or (nlk->pid == 0)
Both would work fine, but I think nlk->pid is better since its
actually the "address".
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