[PATCH 2/4] evaluate: properly set datatype of map expression

[Patrick McHardy <kaber@trash.net>]

The datatype of the map expression is the datatype of the mappings.

# nft add map filter test { type ipv4_addr : inet_service; }
# nft filter output mark set ip daddr map @test

Before:

<cmdline>:1:24-41: Error: datatype mismatch: expected packet mark, expression has type IPv4 address
filter output mark set ip daddr map @test
              ~~~~~~~~~^^^^^^^^^^^^^^^^^^

After:

<cmdline>:1:24-41: Error: datatype mismatch: expected packet mark, expression has type internet network service
filter output mark set ip daddr map @test
              ~~~~~~~~~^^^^^^^^^^^^^^^^^^

Signed-off-by: Patrick McHardy <kaber@trash.net>
---
 src/evaluate.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/evaluate.c b/src/evaluate.c
index 651465a..2067a01 100644
--- a/src/evaluate.c
+++ b/src/evaluate.c
@@ -748,7 +748,7 @@ static int expr_evaluate_map(struct eval_ctx *ctx, struct expr **expr)
 		    map->mappings->ops->name);
 	}
 
-	map->dtype = ctx->ectx.dtype;
+	map->dtype = map->mappings->set->datatype;
 	map->flags |= EXPR_F_CONSTANT;
 
 	/* Data for range lookups needs to be in big endian order */
-- 
2.1.0