src: allow variables in the chain priority specification

This patch allows you to use variables in chain priority definitions,
e.g.

define prio = filter
define prionum = 10
define prioffset = "filter - 150"

add table ip foo
add chain ip foo bar { type filter hook input priority $prio; }
add chain ip foo ber { type filter hook input priority $prionum; }
add chain ip foo bor { type filter hook input priority $prioffset; }

Signed-off-by: Fernando Fernandez Mancera <ffmancera@riseup.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/datatype.h b/include/datatype.h
index cf115158..ddcb7db8 100644
--- a/include/datatype.h
+++ b/include/datatype.h
@@ -262,6 +262,7 @@ extern const struct datatype icmpx_code_type;
 extern const struct datatype igmp_type_type;
 extern const struct datatype time_type;
 extern const struct datatype boolean_type;
+extern const struct datatype priority_type;
 
 void inet_service_type_print(const struct expr *expr, struct output_ctx *octx);