netfilter: flowtable: Add pending bit for offload work

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Gc step can queue offloaded flow del work or stats work.
Those work items can race each other and a flow could be freed
before the stats work is executed and querying it.
To avoid that, add a pending bit that if a work exists for a flow
don't queue another work for it.
This will also avoid adding multiple stats works in case stats work
didn't complete but gc step started again.

Signed-off-by: Paul Blakey <paulb@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

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Paul Blakey 2020-05-06 14:24:39 +03:00 • committed by Pablo Neira Ayuso

parent 2c407aca64

commit 2c8897953f

2 changed files with 8 additions and 1 deletions

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1

include/net/netfilter/nf_flow_table.h

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10

net/netfilter/nf_flow_table_offload.c

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