netfilter: nf_tables: No need to check chain existence when tracing

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nft_trace_notify() is called only from __nft_trace_packet(), which
assigns its parameter 'chain' to info->chain. __nft_trace_packet() in
turn later dereferences 'chain' unconditionally, which indicates that
it's never NULL. Same does nft_do_chain(), the only user of the tracing
infrastructure. Hence it is safe to assume the check removed here is not
needed.

Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

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Phil Sutter 2017-07-27 16:56:39 +02:00 • committed by Pablo Neira Ayuso

parent 591bb2789b

commit 6e692678d7

1 changed files with 5 additions and 8 deletions

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net/netfilter/nf_tables_trace.c

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