From: Pablo Neira Ayuso <pablo@netfilter.org>
To: netfilter-devel@vger.kernel.org
Subject: [PATCH nf 1/2] netfilter: nf_tables: bogus EOPNOTSUPP on basechain update
Date: Mon, 4 Nov 2019 14:52:41 +0100 [thread overview]
Message-ID: <20191104135242.31662-1-pablo@netfilter.org> (raw)
Userspace never includes the NFT_BASE_CHAIN flag, this flag is inferred
from the NFTA_CHAIN_HOOK atribute. The chain update path does not allow
to update flags at this stage, the existing sanity check bogusly hits
EOPNOTSUPP in the basechain case if the offload flag is set on.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
net/netfilter/nf_tables_api.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index 13f09412cc6a..7a95de60e302 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -2177,6 +2177,7 @@ static int nf_tables_newchain(struct net *net, struct sock *nlsk,
if (nlh->nlmsg_flags & NLM_F_REPLACE)
return -EOPNOTSUPP;
+ flags |= chain->flags & NFT_BASE_CHAIN;
return nf_tables_updchain(&ctx, genmask, policy, flags);
}
--
2.11.0
next reply other threads:[~2019-11-04 13:52 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-04 13:52 Pablo Neira Ayuso [this message]
2019-11-04 13:52 ` [PATCH nf 2/2] netfilter: nf_tables_offload: skip EBUSY on chain update Pablo Neira Ayuso
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