netfilter: Add helper array register/unregister functions

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Add nf_ct_helper_init(), nf_conntrack_helpers_register() and
nf_conntrack_helpers_unregister() functions to avoid repetitive
opencoded initialization in helpers.

This patch keeps an id parameter for nf_ct_helper_init() not to break
helper matching by name that has been inconsistently exposed to
userspace through ports, eg. ftp-2121, and through an incremental id,
eg. tftp-1.

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

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This commit is contained in:

Gao Feng 2016-07-18 11:39:23 +08:00 • committed by Pablo Neira Ayuso

parent 590025a27f

commit 82de0be686

7 changed files with 165 additions and 181 deletions

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15

include/net/netfilter/nf_conntrack_helper.h

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56

net/netfilter/nf_conntrack_ftp.c

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57

net/netfilter/nf_conntrack_helper.c

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36

net/netfilter/nf_conntrack_irc.c

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55

net/netfilter/nf_conntrack_sane.c

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75

net/netfilter/nf_conntrack_sip.c

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46

net/netfilter/nf_conntrack_tftp.c

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