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Commit 7a4fa291 authored by Yuval Mintz's avatar Yuval Mintz Committed by David S. Miller
Browse files

net: sched: Add TCA_HW_OFFLOAD 



Qdiscs can be offloaded to HW, but current implementation isn't uniform.
Instead, qdiscs either pass information about offload status via their
TCA_OPTIONS or omit it altogether.

Introduce a new attribute - TCA_HW_OFFLOAD that would form a uniform
uAPI for the offloading status of qdiscs.

Signed-off-by: default avatarYuval Mintz <yuvalm@mellanox.com>
Acked-by: default avatarJiri Pirko <jiri@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 0a060697

include/net/sch_generic.h

+1 −0
Original line number Diff line number Diff line
@@ -71,6 +71,7 @@ struct Qdisc { 
				      * qdisc_tree_decrease_qlen() should stop.

				      */

#define TCQ_F_INVISIBLE		0x80 /* invisible by default in dump */

#define TCQ_F_OFFLOADED		0x200 /* qdisc is offloaded to HW */

	u32			limit;

	const struct Qdisc_ops	*ops;

	struct qdisc_size_table	__rcu *stab;

include/uapi/linux/rtnetlink.h

+1 −0
Original line number Diff line number Diff line
@@ -557,6 +557,7 @@ enum { 
	TCA_PAD,

	TCA_DUMP_INVISIBLE,

	TCA_CHAIN,

	TCA_HW_OFFLOAD,

	__TCA_MAX

};

net/sched/sch_api.c

+2 −0
Original line number Diff line number Diff line
@@ -795,6 +795,8 @@ static int tc_fill_qdisc(struct sk_buff *skb, struct Qdisc *q, u32 clid, 
	tcm->tcm_info = refcount_read(&q->refcnt);

	if (nla_put_string(skb, TCA_KIND, q->ops->id))

		goto nla_put_failure;

	if (nla_put_u8(skb, TCA_HW_OFFLOAD, !!(q->flags & TCQ_F_OFFLOADED)))

		goto nla_put_failure;

	if (q->ops->dump && q->ops->dump(q, skb) < 0)

		goto nla_put_failure;

	qlen = q->q.qlen;