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net: sched: implement qstat helper routines

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This adds helpers to manipulate qstats logic and replaces locations
that touch the counters directly. This simplifies future patches
to push qstats onto per cpu counters.

Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
John Fastabend
2014-09-28 11:53:29 -07:00
committed by David S. Miller
parent 22e0f8b932
commit 25331d6ce4
25 changed files with 108 additions and 81 deletions
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14
net/sched/sch_choke.c
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@@ -127,7 +127,7 @@ static void choke_drop_by_idx(struct Qdisc *sch, unsigned int idx)
if (idx == q->tail)
choke_zap_tail_holes(q);
sch->qstats.backlog -= qdisc_pkt_len(skb);
qdisc_qstats_backlog_dec(sch, skb);
qdisc_drop(skb, sch);
qdisc_tree_decrease_qlen(sch, 1);
--sch->q.qlen;
@@ -302,7 +302,7 @@ static int choke_enqueue(struct sk_buff *skb, struct Qdisc *sch)
if (q->vars.qavg > p->qth_max) {
q->vars.qcount = -1;
sch->qstats.overlimits++;
qdisc_qstats_overlimit(sch);
if (use_harddrop(q) || !use_ecn(q) ||
!INET_ECN_set_ce(skb)) {
q->stats.forced_drop++;
@@ -315,7 +315,7 @@ static int choke_enqueue(struct sk_buff *skb, struct Qdisc *sch)
q->vars.qcount = 0;
q->vars.qR = red_random(p);
sch->qstats.overlimits++;
qdisc_qstats_overlimit(sch);
if (!use_ecn(q) || !INET_ECN_set_ce(skb)) {
q->stats.prob_drop++;
goto congestion_drop;
@@ -332,7 +332,7 @@ static int choke_enqueue(struct sk_buff *skb, struct Qdisc *sch)
q->tab[q->tail] = skb;
q->tail = (q->tail + 1) & q->tab_mask;
++sch->q.qlen;
sch->qstats.backlog += qdisc_pkt_len(skb);
qdisc_qstats_backlog_inc(sch, skb);
return NET_XMIT_SUCCESS;
}
@@ -345,7 +345,7 @@ congestion_drop:
other_drop:
if (ret & __NET_XMIT_BYPASS)
sch->qstats.drops++;
qdisc_qstats_drop(sch);
kfree_skb(skb);
return ret;
}
@@ -365,7 +365,7 @@ static struct sk_buff *choke_dequeue(struct Qdisc *sch)
q->tab[q->head] = NULL;
choke_zap_head_holes(q);
--sch->q.qlen;
sch->qstats.backlog -= qdisc_pkt_len(skb);
qdisc_qstats_backlog_dec(sch, skb);
qdisc_bstats_update(sch, skb);
return skb;
@@ -460,7 +460,7 @@ static int choke_change(struct Qdisc *sch, struct nlattr *opt)
ntab[tail++] = skb;
continue;
}
sch->qstats.backlog -= qdisc_pkt_len(skb);
qdisc_qstats_backlog_dec(sch, skb);
--sch->q.qlen;
qdisc_drop(skb, sch);
}