]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
netfilter: nf_tables: No need to check chain existence when tracing
authorPhil Sutter <phil@nwl.cc>
Thu, 27 Jul 2017 14:56:39 +0000 (16:56 +0200)
committerPablo Neira Ayuso <pablo@netfilter.org>
Mon, 31 Jul 2017 17:14:05 +0000 (19:14 +0200)
commit6e692678d74289d6129bbd4bb20bb9fe01278faa
treed333471bd44be2d8b03d77b0aaa8fc0c3e3d459c
parent591bb2789bc2a93f379b13d277f441f1b427102d
netfilter: nf_tables: No need to check chain existence when tracing

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>
net/netfilter/nf_tables_trace.c