[PATCH 2/2 nft WIP v2] jump: Allow jump to a variable when using nft input files

[Fernando Fernandez Mancera <ffmancera@xxxxxxxxxx>]

This patch introduces the use of nft input files variables in 'jump'
statements, e.g.

define dest = chainame

add rule ip filter input jump $dest

Signed-off-by: Fernando Fernandez Mancera <ffmancera@xxxxxxxxxx>
---
 src/parser_bison.y | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/parser_bison.y b/src/parser_bison.y
index 69b5773..42fd71f 100644
--- a/src/parser_bison.y
+++ b/src/parser_bison.y
@@ -3841,7 +3841,13 @@ verdict_expr		:	ACCEPT
 			}
 			;
 
-chain_expr		:	identifier
+chain_expr		:	variable_expr
+			{
+				$$ = symbol_expr_alloc(&@$, SYMBOL_VALUE,
+						       current_scope(state),
+						       $1->sym->identifier);
+			}
+			|	identifier
 			{
 				$$ = constant_expr_alloc(&@$, &string_type,
 							 BYTEORDER_HOST_ENDIAN,
-- 
2.20.1