netfilter: extract Passive OS fingerprint infrastructure from xt_osf
Add nf_osf_ttl() and nf_osf_match() into nf_osf.c to prepare for nf_tables support. Signed-off-by: Fernando Fernandez Mancera <ffmancera@riseup.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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net/netfilter/nf_osf.c
0 → 100644
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