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authorFlorian Westphal <fw@strlen.de>2019-07-13 23:59:21 +0200
committerPablo Neira Ayuso <pablo@netfilter.org>2019-07-16 13:17:02 +0200
commitb717273ddb66a0c576d8c9884a6cfa70a5f49f6b (patch)
treebeae4de4095ac99f4add679f32e69bb3a130249a /net
parent959b69ef57db00cb33e9c4777400ae7183ebddd3 (diff)
downloadlinux-b717273ddb66a0c576d8c9884a6cfa70a5f49f6b.tar.bz2
netfilter: nf_tables: don't fail when updating base chain policy
The following nftables test case fails on nf-next: tests/shell/run-tests.sh tests/shell/testcases/transactions/0011chain_0 The test case contains: add chain x y { type filter hook input priority 0; } add chain x y { policy drop; }" The new test if (chain->flags ^ flags) return -EOPNOTSUPP; triggers here, because chain->flags has NFT_BASE_CHAIN set, but flags is 0 because no flag attribute was present in the policy update. Just fetch the current flag settings of a pre-existing chain in case userspace did not provide any. Fixes: c9626a2cbdb20 ("netfilter: nf_tables: add hardware offload support") Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net')
-rw-r--r--net/netfilter/nf_tables_api.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index ed17a7c29b86..014e06b0b5cf 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -1900,6 +1900,8 @@ static int nf_tables_newchain(struct net *net, struct sock *nlsk,
if (nla[NFTA_CHAIN_FLAGS])
flags = ntohl(nla_get_be32(nla[NFTA_CHAIN_FLAGS]));
+ else if (chain)
+ flags = chain->flags;
nft_ctx_init(&ctx, net, skb, nlh, family, table, chain, nla);