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sch_hfsc: report backlog information

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Add backlog (byte count) information in hfsc classes and qdisc, so that
"tc -s" can report it to user, instead of 0 values :

qdisc hfsc 1: root refcnt 6 default 20
 Sent 45141660 bytes 30545 pkt (dropped 0, overlimits 91751 requeues 0)
 rate 1492Kbit 126pps backlog 103226b 74p requeues 0
...
class hfsc 1:20 parent 1:1 leaf 1201: rt m1 0bit d 0us m2 400000bit ls m1 0bit d 0us m2 200000bit
 Sent 49534912 bytes 33519 pkt (dropped 0, overlimits 0 requeues 0)
 backlog 81822b 56p requeues 0
 period 23 work 49451576 bytes rtwork 13277552 bytes level 0
...

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: John A. Sullivan III <jsullivan@opensourcedevel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2011-12-23 05:19:20 +00:00 committed by David S. Miller
parent 681f16232c
commit f5a59b7332
1 changed files with 10 additions and 0 deletions
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10
net/sched/sch_hfsc.c
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@ -1368,6 +1368,7 @@ hfsc_dump_class_stats(struct Qdisc *sch, unsigned long arg,
struct tc_hfsc_stats xstats;
cl->qstats.qlen = cl->qdisc->q.qlen;
cl->qstats.backlog = cl->qdisc->qstats.backlog;
xstats.level = cl->level;
xstats.period = cl->cl_vtperiod;
xstats.work = cl->cl_total;
@ -1561,6 +1562,15 @@ hfsc_dump_qdisc(struct Qdisc *sch, struct sk_buff *skb)
struct hfsc_sched *q = qdisc_priv(sch);
unsigned char *b = skb_tail_pointer(skb);
struct tc_hfsc_qopt qopt;
struct hfsc_class *cl;
struct hlist_node *n;
unsigned int i;
sch->qstats.backlog = 0;
for (i = 0; i < q->clhash.hashsize; i++) {
hlist_for_each_entry(cl, n, &q->clhash.hash[i], cl_common.hnode)
sch->qstats.backlog += cl->qdisc->qstats.backlog;
}
qopt.defcls = q->defcls;
NLA_PUT(skb, TCA_OPTIONS, sizeof(qopt), &qopt);