netfilter: nft_set_hash: mark set element as dead when deleting from packet path
Set on the NFT_SET_ELEM_DEAD_BIT flag on this element, instead of performing element removal which might race with an ongoing transaction. Enable gc when dynamic flag is set on since dynset deletion requires garbage collection after this patch. Fixes: d0a8d877 ("netfilter: nft_dynset: support for element deletion") Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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