From 2a4a5a2c8ae21f2bcf7e81b5eafea91d799ee88a Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Wed, 29 Aug 2018 16:23:22 +0200
Subject: JSON: Make meta statement/expression extensible

Lessons learned from fwd statement: We must not assume a given
statement/expression may not receive further properties in the future.
Therefore make meta value an object with a property "key" instead of
just a string containing the key name.

Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
 doc/libnftables-json.adoc | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

(limited to 'doc/libnftables-json.adoc')

diff --git a/doc/libnftables-json.adoc b/doc/libnftables-json.adoc
index e51e9d40..058573df 100644
--- a/doc/libnftables-json.adoc
+++ b/doc/libnftables-json.adoc
@@ -1060,7 +1060,19 @@ existence check in a *match* statement with boolean on right hand side.
 
 === META
 [verse]
-*{ "meta":* 'STRING' *}*
+____
+*{ "meta": {
+	"key":* 'META_KEY'
+*}}*
+
+'META_KEY' := *"length"* | *"protocol"* | *"priority"* | *"random"* | *"mark"* |
+              *"iif"* | *"iifname"* | *"iiftype"* | *"oif"* | *"oifname"* |
+	      *"oiftype"* | *"skuid"* | *"skgid"* | *"nftrace"* |
+	      *"rtclassid"* | *"ibriport"* | *"obriport"* | *"ibridgename"* |
+	      *"obridgename"* | *"pkttype"* | *"cpu"* | *"iifgroup"* |
+	      *"oifgroup"* | *"cgroup"* | *"nfproto"* | *"l4proto"* |
+	      *"secpath"*
+____
 
 Create a reference to packet meta data.
 
-- 
cgit v1.2.3

