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netfilter: nf_tables: bail out early if hardware offload is not suppo…
…rted [ Upstream commit 3a41c64 ] If user requests for NFT_CHAIN_HW_OFFLOAD, then check if either device provides the .ndo_setup_tc interface or there is an indirect flow block that has been registered. Otherwise, bail out early from the preparation phase. Moreover, validate that family == NFPROTO_NETDEV and hook is NF_NETDEV_INGRESS. Fixes: c9626a2 ("netfilter: nf_tables: add hardware offload support") Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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