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| author | Yuval Mintz | 2017-12-14 14:54:29 +0100 |
|---|---|---|
| committer | David S. Miller | 2017-12-15 19:35:36 +0100 |
| commit | 7a4fa29106d9a38ef005f5ab15d493c259f269c0 (patch) | |
| tree | c9283f86e133216c20fa8f0d67ee53f5645734ad | |
| parent | Merge branch 'aquantia-fixes' (diff) | |
| download | kernel-qcow2-linux-7a4fa29106d9a38ef005f5ab15d493c259f269c0.tar.gz kernel-qcow2-linux-7a4fa29106d9a38ef005f5ab15d493c259f269c0.tar.xz kernel-qcow2-linux-7a4fa29106d9a38ef005f5ab15d493c259f269c0.zip | |
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: Yuval Mintz <yuvalm@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/net/sch_generic.h | 1 | ||||
| -rw-r--r-- | include/uapi/linux/rtnetlink.h | 1 | ||||
| -rw-r--r-- | net/sched/sch_api.c | 2 |
3 files changed, 4 insertions, 0 deletions
diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h index 65d0d25f2648..83a3e47d5845 100644 --- a/include/net/sch_generic.h +++ b/include/net/sch_generic.h @@ -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; diff --git a/include/uapi/linux/rtnetlink.h b/include/uapi/linux/rtnetlink.h index d8b5f80c2ea6..843e29aa3cac 100644 --- a/include/uapi/linux/rtnetlink.h +++ b/include/uapi/linux/rtnetlink.h @@ -557,6 +557,7 @@ enum { TCA_PAD, TCA_DUMP_INVISIBLE, TCA_CHAIN, + TCA_HW_OFFLOAD, __TCA_MAX }; diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c index b6c4f536876b..0f1eab99ff4e 100644 --- a/net/sched/sch_api.c +++ b/net/sched/sch_api.c @@ -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; |