Re: [RFC Patch net-next 0/6] net_sched: really switch to RCU for tc actions

On 16-09-07 09:23 AM, John Fastabend wrote:

On 16-09-01 10:57 PM, Cong Wang wrote:

quoted

Currently there are only two tc actions lockless:
gact and mirred. But they are questionable because
we don't have anything to prevent a parallel update
on an existing tc action in hash table while reading
it on fast path, this could be a problem when a tc
action becomes complex.

hmm I'm trying to see where the questionable part is in the current
code? What is it exactly.

[...]

What did I miss?

OK tracked this down see the other patch 5/6.