From: stephen hemminger <shemminger@vyatta.com>
Date: Wed, 23 Feb 2011 13:04:19 +0000 (+0000)
Subject: netem: define NETEM_DIST_MAX
X-Git-Tag: firefly_0821_release~7613^2~2196^2~243
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=df173bda2639ac744ccf596ec1f8f7e66fe4c343;p=firefly-linux-kernel-4.4.55.git

netem: define NETEM_DIST_MAX

Rather than magic constant in code, expose the maximum size of
packet distribution table in API. In iproute2, q_netem defines
MAX_DIST as 16K already.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/include/linux/pkt_sched.h b/include/linux/pkt_sched.h
index 5afee2b238bd..891382268fe1 100644
--- a/include/linux/pkt_sched.h
+++ b/include/linux/pkt_sched.h
@@ -495,6 +495,7 @@ struct tc_netem_corrupt {
 };
 
 #define NETEM_DIST_SCALE	8192
+#define NETEM_DIST_MAX		16384
 
 /* DRR */
 
diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c
index 86dad1eee549..289febd3ccac 100644
--- a/net/sched/sch_netem.c
+++ b/net/sched/sch_netem.c
@@ -332,7 +332,7 @@ static int get_dist_table(struct Qdisc *sch, const struct nlattr *attr)
 	int i;
 	size_t s;
 
-	if (n > 65536)
+	if (n > NETEM_DIST_MAX)
 		return -EINVAL;
 
 	s = sizeof(struct disttable) + n * sizeof(s16);