pkt_sched: Add peek emulation for non-work-conserving qdiscs.

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This patch adds qdisc_peek_dequeued() wrapper to emulate peek method
with qdisc->dequeue() and storing "peeked" skb in qdisc->gso_skb until
dequeuing. This is mainly for compatibility reasons not to break some
strange configs because peeking is expected for non-work-conserving
parent qdiscs to query work-conserving child qdiscs.

This implementation requires using qdisc_dequeue_peeked() wrapper
instead of directly calling qdisc->dequeue() for all qdiscs ever
querried with qdisc->ops->peek() or qdisc_peek_dequeued().

Signed-off-by: Jarek Poplawski <jarkao2@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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This commit is contained in:

Jarek Poplawski 2008-10-31 00:47:01 -07:00 • committed by David S. Miller

parent 03c05f0d4b

commit 77be155cba

7 changed files with 34 additions and 6 deletions

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23

include/net/sch_generic.h

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4

net/sched/sch_atm.c

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1

net/sched/sch_cbq.c

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3

net/sched/sch_hfsc.c

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1

net/sched/sch_htb.c

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5

net/sched/sch_netem.c

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3

net/sched/sch_tbf.c

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