netdev - [PATCH net-next 2/4] net_sched: export pfifo

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Date: Sun,  1 Oct 2023 14:51:00 +0000
From: Eric Dumazet <edumazet@...gle.com>
To: "David S . Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, 
	Paolo Abeni <pabeni@...hat.com>
Cc: Willem de Bruijn <willemb@...gle.com>, Soheil Hassas Yeganeh <soheil@...gle.com>, 
	Neal Cardwell <ncardwell@...gle.com>, Jamal Hadi Salim <jhs@...atatu.com>, 
	Cong Wang <xiyou.wangcong@...il.com>, Jiri Pirko <jiri@...nulli.us>, netdev@...r.kernel.org, 
	eric.dumazet@...il.com, Eric Dumazet <edumazet@...gle.com>
Subject: [PATCH net-next 2/4] net_sched: export pfifo_fast prio2band[]

pfifo_fast prio2band[] is renamed to sch_default_prio2band[]
and exported because we want to use it in FQ.

Signed-off-by: Eric Dumazet <edumazet@...gle.com>
---
 include/net/sch_generic.h | 1 +
 net/sched/sch_generic.c   | 9 +++++----
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
index f232512505f89622517f87a24b35c3a441c81b3d..c7318c73cfd632b730ca1e943c777f0475cd6458 100644
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h
@@ -587,6 +587,7 @@ static inline void sch_tree_unlock(struct Qdisc *q)
 extern struct Qdisc noop_qdisc;
 extern struct Qdisc_ops noop_qdisc_ops;
 extern struct Qdisc_ops pfifo_fast_ops;
+extern const u8 sch_default_prio2band[TC_PRIO_MAX + 1];
 extern struct Qdisc_ops mq_qdisc_ops;
 extern struct Qdisc_ops noqueue_qdisc_ops;
 extern const struct Qdisc_ops *default_qdisc_ops;
diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
index 5d7e23f4cc0ee4c8c2c39cf10405f56fb6f0bfe1..4195a4bc26ca7932edb7b60b383f7887d960f3ca 100644
--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
@@ -694,9 +694,10 @@ struct Qdisc_ops noqueue_qdisc_ops __read_mostly = {
 	.owner		=	THIS_MODULE,
 };
 
-static const u8 prio2band[TC_PRIO_MAX + 1] = {
-	1, 2, 2, 2, 1, 2, 0, 0 , 1, 1, 1, 1, 1, 1, 1, 1
+const u8 sch_default_prio2band[TC_PRIO_MAX + 1] = {
+	1, 2, 2, 2, 1, 2, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1
 };
+EXPORT_SYMBOL(sch_default_prio2band);
 
 /* 3-band FIFO queue: old style, but should be a bit faster than
    generic prio+fifo combination.
@@ -721,7 +722,7 @@ static inline struct skb_array *band2list(struct pfifo_fast_priv *priv,
 static int pfifo_fast_enqueue(struct sk_buff *skb, struct Qdisc *qdisc,
 			      struct sk_buff **to_free)
 {
-	int band = prio2band[skb->priority & TC_PRIO_MAX];
+	int band = sch_default_prio2band[skb->priority & TC_PRIO_MAX];
 	struct pfifo_fast_priv *priv = qdisc_priv(qdisc);
 	struct skb_array *q = band2list(priv, band);
 	unsigned int pkt_len = qdisc_pkt_len(skb);
@@ -830,7 +831,7 @@ static int pfifo_fast_dump(struct Qdisc *qdisc, struct sk_buff *skb)
 {
 	struct tc_prio_qopt opt = { .bands = PFIFO_FAST_BANDS };
 
-	memcpy(&opt.priomap, prio2band, TC_PRIO_MAX + 1);
+	memcpy(&opt.priomap, sch_default_prio2band, TC_PRIO_MAX + 1);
 	if (nla_put(skb, TCA_OPTIONS, sizeof(opt), &opt))
 		goto nla_put_failure;
 	return skb->len;
-- 
2.42.0.582.g8ccd20d70d-goog