* [PATCH nft] evaluate: flag fwd and queue statements as terminal
@ 2019-09-06 14:43 Florian Westphal
2019-09-07 9:18 ` Pablo Neira Ayuso
0 siblings, 1 reply; 2+ messages in thread
From: Florian Westphal @ 2019-09-06 14:43 UTC (permalink / raw)
To: netfilter-devel; +Cc: Florian Westphal
Both queue and fwd statement end evaluation of a rule:
in
... fwd to "eth0" accept
... queue accept
"accept" is redundant and never evaluated in the kernel.
Add the missing "TERMINAL" flag so the evaluation step will catch
any trailing expressions:
nft add rule filter input queue counter
Error: Statement after terminal statement has no effect
Signed-off-by: Florian Westphal <fw@strlen.de>
---
src/evaluate.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/src/evaluate.c b/src/evaluate.c
index b8bcf4866d8d..29fe966008b1 100644
--- a/src/evaluate.c
+++ b/src/evaluate.c
@@ -2963,6 +2963,7 @@ static int stmt_evaluate_fwd(struct eval_ctx *ctx, struct stmt *stmt)
default:
return stmt_error(ctx, stmt, "unsupported family");
}
+ stmt->flags |= STMT_F_TERMINAL;
return 0;
}
@@ -2982,6 +2983,7 @@ static int stmt_evaluate_queue(struct eval_ctx *ctx, struct stmt *stmt)
"fanout requires a range to be "
"specified");
}
+ stmt->flags |= STMT_F_TERMINAL;
return 0;
}
--
2.21.0
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH nft] evaluate: flag fwd and queue statements as terminal
2019-09-06 14:43 [PATCH nft] evaluate: flag fwd and queue statements as terminal Florian Westphal
@ 2019-09-07 9:18 ` Pablo Neira Ayuso
0 siblings, 0 replies; 2+ messages in thread
From: Pablo Neira Ayuso @ 2019-09-07 9:18 UTC (permalink / raw)
To: Florian Westphal; +Cc: netfilter-devel
On Fri, Sep 06, 2019 at 04:43:37PM +0200, Florian Westphal wrote:
> Both queue and fwd statement end evaluation of a rule:
>
> in
> ... fwd to "eth0" accept
> ... queue accept
>
> "accept" is redundant and never evaluated in the kernel.
> Add the missing "TERMINAL" flag so the evaluation step will catch
> any trailing expressions:
>
> nft add rule filter input queue counter
> Error: Statement after terminal statement has no effect
>
> Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
^ permalink raw reply [flat|nested] 2+ messages in thread
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