[LARTC] tc pfifo queue length

From: "john zhou" <john_zhou@hotmail.com>
To: lartc@vger.kernel.org
Subject: [LARTC] tc pfifo queue length
Date: Thu, 18 Jul 2002 21:27:36 +0000	[thread overview]
Message-ID: <marc-lartc-102702774727323@msgid-missing> (raw)

hi,

when I read following part in sch_fifo.c, in pfifo_enqueue:

static int
105 pfifo_enqueue(struct sk_buff *skb, struct Qdisc* sch)
106 {
107         struct fifo_sched_data *q = (struct fifo_sched_data *)sch->data;
108
109         if (sch->q.qlen <= q->limit) {
110                 __skb_queue_tail(&sch->q, skb);
111                 sch->stats.bytes += skb->len;
112                 sch->stats.packets++;
113                 return 0;
114         }
115         sch->stats.drops++;
116 #ifdef CONFIG_NET_CLS_POLICE
117         if (sch->reshape_fail=NULL || sch->reshape_fail(skb, sch))
118 #endif
119                 kfree_skb(skb);
120         return NET_XMIT_DROP;

After enqueue,  sch->q.qlen++ should be there, why in above part no this 
kind of sentence, sch->q.qlen updated in other place???

in bfifo, sch->stats.backlog += skb->len exists.

please give some suggestion, thanks.

John Zhou

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