Florian Westphal 67e4860eee
netfilter: conntrack: avoid useless indirection during conntrack destruction ...
commit 6ae7989c9af0d98ab64196f4f4c6f6499454bd23 upstream.
nf_ct_put() results in a usesless indirection:
nf_ct_put -> nf_conntrack_put -> nf_conntrack_destroy -> rcu readlock +
indirect call of ct_hooks->destroy().
There are two _put helpers:
nf_ct_put and nf_conntrack_put. The latter is what should be used in
code that MUST NOT cause a linker dependency on the conntrack module
(e.g. calls from core network stack).
Everyone else should call nf_ct_put() instead.
A followup patch will convert a few nf_conntrack_put() calls to
nf_ct_put(), in particular from modules that already have a conntrack
dependency such as act_ct or even nf_conntrack itself.
Signed-off-by: Florian Westphal <fw@strlen.de >
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org >
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org >
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