netfilter: flowtable: check namespace before iterating flows

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nf_flow_table_cleanup() walks every registered flow table, checking the
network namespace for each flow in nf_flow_table_do_cleanup(). As a
result, tables in other namespaces are still iterated and their cleanup
work is flushed.

Compare the flow table's namespace with the device's namespace in
nf_flow_table_cleanup() and skip nonmatching tables. This avoids
unnecessary iteration and work flushing, and leaves the per-flow cleanup
callback to check only the interface index.

Signed-off-by: Qingfang Deng <qingfang.deng@linux.dev>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

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Qingfang Deng 2026-09-09 16:17:04 +08:00 • committed by Pablo Neira Ayuso

parent d4548625f3

commit c48fdf027a

1 changed files with 7 additions and 10 deletions

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net/netfilter/nf_flow_table_core.c

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