netfilter: nf_flow_table_offload: check the status of dst_neigh

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It is better to get the dst_neigh with neigh->lock and check the
nud_state is VALID. If there is not neigh previous, the lookup will
Create a non NUD_VALID with 00:00:00:00:00:00 mac.

Fixes: c29f74e0df ("netfilter: nf_flow_table: hardware offload support")
Signed-off-by: wenxu <wenxu@ucloud.cn>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

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wenxu 2019-12-20 12:14:37 +08:00 • committed by Pablo Neira Ayuso

parent 1b67e50601

commit f31ad71c44

1 changed files with 14 additions and 2 deletions

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net/netfilter/nf_flow_table_offload.c

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