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net_sched: sch_sfq: add backlog info in sfq_dump_class_stats() 

We currently return for each active SFQ slot the number of packets in
queue. We can also give number of bytes accounted for these packets.

tc -s class show dev ifb0

Before patch :

class sfq 11:3d9 parent 11:
 (dropped 0, overlimits 0 requeues 0)
 backlog 0b 3p requeues 0
 allot 1266

After patch :

class sfq 11:3e4 parent 11:
 (dropped 0, overlimits 0 requeues 0)
 backlog 4380b 3p requeues 0
 allot 1212

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2010-12-15 08:18:36 +00:00 committed by David S. Miller
parent f955e1415f
commit c426626324
1 changed files with 6 additions and 1 deletions
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7
net/sched/sch_sfq.c
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@ -548,8 +548,13 @@ static int sfq_dump_class_stats(struct Qdisc *sch, unsigned long cl,
{
struct sfq_sched_data *q = qdisc_priv(sch);
sfq_index idx = q->ht[cl-1];
struct gnet_stats_queue qs = { .qlen = q->qs[idx].qlen };
struct sk_buff_head *list = &q->qs[idx];
struct gnet_stats_queue qs = { .qlen = list->qlen };
struct tc_sfq_xstats xstats = { .allot = q->allot[idx] };
struct sk_buff *skb;
skb_queue_walk(list, skb)
qs.backlog += qdisc_pkt_len(skb);
if (gnet_stats_copy_queue(d, &qs) < 0)
return -1;