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Message-ID: <1392173895-5012-4-git-send-email-yangyingliang@huawei.com>
Date: Wed, 12 Feb 2014 10:58:14 +0800
From: Yang Yingliang <yangyingliang@...wei.com>
To: <netdev@...r.kernel.org>
CC: <davem@...emloft.net>, <stephen@...workplumber.org>
Subject: [PATCH net-next 3/4] sch_netem: replace magic numbers with enumerate in GE model
Replace some magic numbers which describe states of GE model
loss generator with enumerate.
Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>
---
net/sched/sch_netem.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)
diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c
index 4a5eb28..4fced67 100644
--- a/net/sched/sch_netem.c
+++ b/net/sched/sch_netem.c
@@ -117,6 +117,11 @@ struct netem_sched_data {
LOST_IN_BURST_PERIOD,
} _4_state_model;
+ enum {
+ GOOD_STATE = 1,
+ BAD_STATE,
+ } GE_state_model;
+
/* Correlated Loss Generation models */
struct clgstate {
/* state of the Markov chain */
@@ -272,15 +277,15 @@ static bool loss_gilb_ell(struct netem_sched_data *q)
struct clgstate *clg = &q->clg;
switch (clg->state) {
- case 1:
+ case GOOD_STATE:
if (prandom_u32() < clg->a1)
- clg->state = 2;
+ clg->state = BAD_STATE;
if (prandom_u32() < clg->a4)
return true;
break;
- case 2:
+ case BAD_STATE:
if (prandom_u32() < clg->a2)
- clg->state = 1;
+ clg->state = GOOD_STATE;
if (prandom_u32() > clg->a3)
return true;
}
--
1.8.0
--
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