Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf

Pablo Neira Ayuso says:

====================
Netfilter fixes for net

The following patchset contains Netfilter fixes for net, specifically
fixes for the nf_conncount infrastructure which is causing troubles
since 5c789e131cbb9 ("netfilter: nf_conncount: Add list lock and gc
worker, and RCU for init tree search"). Patches aim to simplify this
infrastructure while fixing up the problems:

1) Use fixed size CONNCOUNT_SLOTS in nf_conncount, from Shawn Bohrer.

2) Incorrect signedness in age calculation from find_or_evict(),
   from Florian Westphal.

3) Proper locking for the garbage collector workqueue callback,
   first make a patch to count how many nodes can be collected
   without holding locks, then grab lock and release them. Also
   from Florian.

4) Restart node lookup from the insertion path, after releasing nodes
   via packet path garbage collection. Shawn Bohrer described a scenario
   that may result in inserting a connection in an already dead list
   node. Patch from Florian.

5) Merge lookup and add function to avoid a hold release and re-grab.
   From Florian.

6) Be safe and iterate over the node lists under the spinlock.

7) Speculative list nodes removal via garbage collection, check if
   list node got a connection while it was scheduled for deletion
   via gc.

8) Accidental argument swap in find_next_bit() that leads to more
   frequent scheduling of the workqueue. From Florian Westphal.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

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