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>
mariux64 · Feb 25, 2011 · df173bd · df173bd
1 parent 6373a9a
commit df173bd
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diff --git 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
@@ -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);