diff mbox series

netfilter: nf_tables: fix update chain error

Message ID 20170923091044.2947-1-chenjingpiao@gmail.com
State Accepted
Delegated to: Pablo Neira
Headers show
Series netfilter: nf_tables: fix update chain error | expand

Commit Message

JingPiao Chen Sept. 23, 2017, 9:10 a.m. UTC
# nft add table filter
 # nft add chain filter c1
 # nft rename chain filter c1 c2

Error: Could not process rule: No such file or directory
rename chain filter c1 c2
^^^^^^^^^^^^^^^^^^^^^^^^^^

 # nft add chain filter c2
 # nft rename chain filter c1 c2
 # nft list table filter

table ip filter {
	chain c2 {
	}

	chain c2 {
	}
}

Fixes: 664b0f8cd8 ("netfilter: nf_tables: add generation mask to chains")
Signed-off-by: JingPiao Chen <chenjingpiao@gmail.com>
---
 net/netfilter/nf_tables_api.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Pablo Neira Ayuso Sept. 29, 2017, 11:34 a.m. UTC | #1
On Sat, Sep 23, 2017 at 05:10:44PM +0800, JingPiao Chen wrote:
>  # nft add table filter
>  # nft add chain filter c1
>  # nft rename chain filter c1 c2
> 
> Error: Could not process rule: No such file or directory
> rename chain filter c1 c2
> ^^^^^^^^^^^^^^^^^^^^^^^^^^
> 
>  # nft add chain filter c2
>  # nft rename chain filter c1 c2
>  # nft list table filter
> 
> table ip filter {
> 	chain c2 {
> 	}
> 
> 	chain c2 {
> 	}
> }

Applied, thanks.
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diff mbox series

Patch

diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index 9299271..f98ca8c 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -1487,8 +1487,8 @@  static int nf_tables_updchain(struct nft_ctx *ctx, u8 genmask, u8 policy,
 
 		chain2 = nf_tables_chain_lookup(table, nla[NFTA_CHAIN_NAME],
 						genmask);
-		if (IS_ERR(chain2))
-			return PTR_ERR(chain2);
+		if (!IS_ERR(chain2))
+			return -EEXIST;
 	}
 
 	if (nla[NFTA_CHAIN_COUNTERS]) {