net_sched: factorize qdisc stats handling

HTB takes into account skb is segmented in stats updates.
Generalize this to all schedulers.

They should use qdisc_bstats_update() helper instead of manipulating
bstats.bytes and bstats.packets

Add bstats_update() helper too for classes that use
gnet_stats_basic_packed fields.

Note : Right now, TCQ_F_CAN_BYPASS shortcurt can be taken only if no
stab is setup on qdisc.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 4 deletions

diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c
index e5593c083a78..1c4bce863479 100644
--- a/net/sched/sch_netem.c
+++ b/net/sched/sch_netem.c
@@ -240,8 +240,7 @@ static int netem_enqueue(struct sk_buff *skb, struct Qdisc *sch)
 
         if (likely(ret == NET_XMIT_SUCCESS)) {
                 sch->q.qlen++;
-                sch->bstats.bytes += qdisc_pkt_len(skb);
-                sch->bstats.packets++;
+                qdisc_bstats_update(sch, skb);
         } else if (net_xmit_drop_count(ret)) {
                 sch->qstats.drops++;
         }
@@ -477,8 +476,7 @@ static int tfifo_enqueue(struct sk_buff *nskb, struct Qdisc *sch)
                 __skb_queue_after(list, skb, nskb);
 
                 sch->qstats.backlog += qdisc_pkt_len(nskb);
-                sch->bstats.bytes += qdisc_pkt_len(nskb);
-                sch->bstats.packets++;
+                qdisc_bstats_update(sch, nskb);
 
                 return NET_XMIT_SUCCESS;
         }