netfilter: ctnetlink: Expectations must have a conntrack helper area

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The expect check function __nf_ct_expect_check() asks the master_help is
necessary. So it is unnecessary to go ahead in ctnetlink_alloc_expect
when there is no help.

Actually the commit bc01befdcf ("netfilter: ctnetlink: add support for
user-space expectation helpers") permits ctnetlink create one expect
even though there is no master help. But the latter commit 3d058d7bc2
("netfilter: rework user-space expectation helper support") disables it
again.

Signed-off-by: Gao Feng <fgao@ikuai8.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

...

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Gao Feng 2017-03-28 09:52:52 +08:00 • committed by Pablo Neira Ayuso

parent 6e699867f8

commit 2c62e0bc68

1 changed files with 8 additions and 19 deletions

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net/netfilter/nf_conntrack_netlink.c

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