QoS

FAQ

1.为什么我的QoS规则都是正确的，但是跑出来的速率不对。

 

ifconfig INTERFACE txqueuelen SIZE

2.htb queue对于IP分片包的速率计算bug

Kenerl 2.6.21

 --- trunk/bcm963xx_4.02L.03/kernel/linux/net/sched/sch_htb.c 2009/10/28 08:42:58 1190
+++ trunk/bcm963xx_4.02L.03/kernel/linux/net/sched/sch_htb.c 2009/10/29 03:14:34 1191
@@ -155,14 +155,20 @@

 static inline long L2T(struct htb_class *cl, struct qdisc_rate_table *rate,
       int size)
 {
  int slot = size >> rate->rate.cell_log;
- if (slot > 255) {
-  cl->xstats.giants++;
-  slot = 255;
+ if (slot > 255){
+             cl->xstats.giants++;
+             /* compute the time if slot is greater than 255 */
+             return (rate->data[1]*slot);
  }
  return rate->data[slot];
 }