[PATCH 4.14 29/38] netfilter: nft_nat: allow to specify layer 4 protocol NAT only
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STALE1903d
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: 2021-08-02 13:53:02
Also in:
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Subsystem:
netfilter, networking [general], the rest · Maintainers:
Pablo Neira Ayuso, Florian Westphal, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Pablo Neira Ayuso <pablo@netfilter.org>
[ Upstream commit a33f387ecd5aafae514095c2c4a8c24f7aea7e8b ]
nft_nat reports a bogus EAFNOSUPPORT if no layer 3 information is specified.
Fixes: d07db9884a5f ("netfilter: nf_tables: introduce nft_validate_register_load()")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/netfilter/nft_nat.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/net/netfilter/nft_nat.c b/net/netfilter/nft_nat.c
index a18cceecef88..04dd813ed775 100644
--- a/net/netfilter/nft_nat.c
+++ b/net/netfilter/nft_nat.c@@ -153,7 +153,9 @@ static int nft_nat_init(const struct nft_ctx *ctx, const struct nft_expr *expr, alen = FIELD_SIZEOF(struct nf_nat_range, min_addr.ip6); break; default: - return -EAFNOSUPPORT; + if (tb[NFTA_NAT_REG_ADDR_MIN]) + return -EAFNOSUPPORT; + break; } priv->family = family;
--
2.30.2