From: Anders K. Pedersen <akp@xxxxxxxxxxxx>
Concatenations of rt nexthop or ct {orignal | reply} {saddr | daddr} fail
due to
# nft add rule ip filter postrouting flow table acct \{ ip saddr . rt nexthop counter \}
<cmdline>:1:61-70: Error: can not use variable sized data types (invalid) in concat expressions
add rule ip filter postrouting flow table acct { ip saddr . rt nexthop counter }
~~~~~~~~~~~^^^^^^^^^^
Fix this by reordering the check for variable size data types in
expr_evaluate_concat() to happen after expr_evaluate() has been called (via
list_member_evaluate()) for the sub expression. This allows
expr_evaluate_[cr]t() to call [cr]t_expr_update_type() and set the data type
before the check.
Signed-off-by: Anders K. Pedersen <akp@xxxxxxxxxxxx>
---
src/evaluate.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/src/evaluate.c b/src/evaluate.c
index 79add5e..878efac 100644
--- a/src/evaluate.c
+++ b/src/evaluate.c
@@ -987,13 +987,6 @@ static int expr_evaluate_concat(struct eval_ctx *ctx, struct expr **expr)
"expecting %s",
dtype->desc);
- if (dtype == NULL && i->dtype->size == 0)
- return expr_binary_error(ctx->msgs, i, *expr,
- "can not use variable sized "
- "data types (%s) in concat "
- "expressions",
- i->dtype->name);
-
if (dtype == NULL)
tmp = datatype_lookup(TYPE_INVALID);
else
@@ -1004,6 +997,13 @@ static int expr_evaluate_concat(struct eval_ctx *ctx, struct expr **expr)
return -1;
flags &= i->flags;
+ if (dtype == NULL && i->dtype->size == 0)
+ return expr_binary_error(ctx->msgs, i, *expr,
+ "can not use variable sized "
+ "data types (%s) in concat "
+ "expressions",
+ i->dtype->name);
+
ntype = concat_subtype_add(ntype, i->dtype->type);
}
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