From 3a14eacb3d54cebc2999d360a3c37b8913dc386e Mon Sep 17 00:00:00 2001
From: Steffen Vogel <post@steffenvogel.de>
Date: Wed, 20 Dec 2017 14:48:44 +0100
Subject: [PATCH] netem: added support for delay correlation

---
 lib/kernel/tc_netem.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/lib/kernel/tc_netem.c b/lib/kernel/tc_netem.c
index 5e380d440..288a600cd 100644
--- a/lib/kernel/tc_netem.c
+++ b/lib/kernel/tc_netem.c
@@ -73,6 +73,17 @@ int tc_netem_parse(struct rtnl_qdisc **netem, json_t *cfg)
 			error("Invalid delay distribution in netem config");
 	}
 
+	if (json_delay_correlation) {
+		val = json_integer_value(json_delay_correlation);
+
+		if (!json_is_real(json_delay_correlation))
+			error("Setting 'correlation' must be a positive integer within the range [ 0, 100 ]");
+
+		rtnl_netem_set_delay_correlation(ne, val);
+	}
+	else
+		rtnl_netem_set_delay_correlation(ne, 0);
+
 	if (json_limit) {
 		val = json_integer_value(json_limit);