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, 4 insertions, 1 deletions

diff --git a/net/core/dev.c b/net/core/dev.c
index 3295b94884ab..a3ef808b5e36 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2297,7 +2297,10 @@ static inline int __dev_xmit_skb(struct sk_buff *skb, struct Qdisc *q,
                  */
                 if (!(dev->priv_flags & IFF_XMIT_DST_RELEASE))
                         skb_dst_force(skb);
-                __qdisc_update_bstats(q, skb->len);
+
+                qdisc_skb_cb(skb)->pkt_len = skb->len;
+                qdisc_bstats_update(q, skb);
+
                 if (sch_direct_xmit(skb, q, dev, txq, root_lock)) {
                         if (unlikely(contended)) {
                                 spin_unlock(&q->busylock);