From: stephen hemminger <stephen@networkplumber.org>
Date: Fri, 29 Nov 2013 19:04:26 +0000 (-0800)
Subject: netem: fix gemodel loss generator
X-Git-Tag: v3.13-rc3~28^2~5
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=eff7979f00b2c546f36f6829f4072c8db54763a9;p=~emulex%2Finfiniband.git

netem: fix gemodel loss generator

Patch from developers of the alternative loss models, downloaded from:
   http://netgroup.uniroma2.it/twiki/bin/view.cgi/Main/NetemCLG

 "in case 2, of the switch we change the direction of the inequality to
  net_random()>clg->a3, because clg->a3 is h in the GE model and when h
  is 0 all packets will be lost."

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c
index 9685624f7bc..bccd52b36e9 100644
--- a/net/sched/sch_netem.c
+++ b/net/sched/sch_netem.c
@@ -272,7 +272,7 @@ static bool loss_gilb_ell(struct netem_sched_data *q)
 	case 2:
 		if (net_random() < clg->a2)
 			clg->state = 1;
-		if (clg->a3 > net_random())
+		if (net_random() > clg->a3)
 			return true;
 	}