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-rw-r--r--target/linux/generic/hack-4.19/662-remove_pfifo_fast.patch220
1 files changed, 0 insertions, 220 deletions
diff --git a/target/linux/generic/hack-4.19/662-remove_pfifo_fast.patch b/target/linux/generic/hack-4.19/662-remove_pfifo_fast.patch
deleted file mode 100644
index c89329c1cc..0000000000
--- a/target/linux/generic/hack-4.19/662-remove_pfifo_fast.patch
+++ /dev/null
@@ -1,220 +0,0 @@
-From b531d492d5ef1cf9dba0f4888eb5fd8624a6d762 Mon Sep 17 00:00:00 2001
-From: Felix Fietkau <nbd@nbd.name>
-Date: Fri, 7 Jul 2017 17:23:42 +0200
-Subject: net: sched: switch default qdisc from pfifo_fast to fq_codel and remove pfifo_fast
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
----
- net/sched/sch_generic.c | 140 ------------------------------------------------
- 1 file changed, 140 deletions(-)
-
---- a/net/sched/sch_generic.c
-+++ b/net/sched/sch_generic.c
-@@ -613,207 +613,6 @@ struct Qdisc_ops noqueue_qdisc_ops __rea
- .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
--};
--
--/* 3-band FIFO queue: old style, but should be a bit faster than
-- generic prio+fifo combination.
-- */
--
--#define PFIFO_FAST_BANDS 3
--
--/*
-- * Private data for a pfifo_fast scheduler containing:
-- * - rings for priority bands
-- */
--struct pfifo_fast_priv {
-- struct skb_array q[PFIFO_FAST_BANDS];
--};
--
--static inline struct skb_array *band2list(struct pfifo_fast_priv *priv,
-- int band)
--{
-- return &priv->q[band];
--}
--
--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];
-- struct pfifo_fast_priv *priv = qdisc_priv(qdisc);
-- struct skb_array *q = band2list(priv, band);
-- unsigned int pkt_len = qdisc_pkt_len(skb);
-- int err;
--
-- err = skb_array_produce(q, skb);
--
-- if (unlikely(err))
-- return qdisc_drop_cpu(skb, qdisc, to_free);
--
-- qdisc_qstats_atomic_qlen_inc(qdisc);
-- /* Note: skb can not be used after skb_array_produce(),
-- * so we better not use qdisc_qstats_cpu_backlog_inc()
-- */
-- this_cpu_add(qdisc->cpu_qstats->backlog, pkt_len);
-- return NET_XMIT_SUCCESS;
--}
--
--static struct sk_buff *pfifo_fast_dequeue(struct Qdisc *qdisc)
--{
-- struct pfifo_fast_priv *priv = qdisc_priv(qdisc);
-- struct sk_buff *skb = NULL;
-- int band;
--
-- for (band = 0; band < PFIFO_FAST_BANDS && !skb; band++) {
-- struct skb_array *q = band2list(priv, band);
--
-- if (__skb_array_empty(q))
-- continue;
--
-- skb = __skb_array_consume(q);
-- }
-- if (likely(skb)) {
-- qdisc_qstats_cpu_backlog_dec(qdisc, skb);
-- qdisc_bstats_cpu_update(qdisc, skb);
-- qdisc_qstats_atomic_qlen_dec(qdisc);
-- }
--
-- return skb;
--}
--
--static struct sk_buff *pfifo_fast_peek(struct Qdisc *qdisc)
--{
-- struct pfifo_fast_priv *priv = qdisc_priv(qdisc);
-- struct sk_buff *skb = NULL;
-- int band;
--
-- for (band = 0; band < PFIFO_FAST_BANDS && !skb; band++) {
-- struct skb_array *q = band2list(priv, band);
--
-- skb = __skb_array_peek(q);
-- }
--
-- return skb;
--}
--
--static void pfifo_fast_reset(struct Qdisc *qdisc)
--{
-- int i, band;
-- struct pfifo_fast_priv *priv = qdisc_priv(qdisc);
--
-- for (band = 0; band < PFIFO_FAST_BANDS; band++) {
-- struct skb_array *q = band2list(priv, band);
-- struct sk_buff *skb;
--
-- /* NULL ring is possible if destroy path is due to a failed
-- * skb_array_init() in pfifo_fast_init() case.
-- */
-- if (!q->ring.queue)
-- continue;
--
-- while ((skb = __skb_array_consume(q)) != NULL)
-- kfree_skb(skb);
-- }
--
-- for_each_possible_cpu(i) {
-- struct gnet_stats_queue *q = per_cpu_ptr(qdisc->cpu_qstats, i);
--
-- q->backlog = 0;
-- }
--}
--
--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);
-- if (nla_put(skb, TCA_OPTIONS, sizeof(opt), &opt))
-- goto nla_put_failure;
-- return skb->len;
--
--nla_put_failure:
-- return -1;
--}
--
--static int pfifo_fast_init(struct Qdisc *qdisc, struct nlattr *opt,
-- struct netlink_ext_ack *extack)
--{
-- unsigned int qlen = qdisc_dev(qdisc)->tx_queue_len;
-- struct pfifo_fast_priv *priv = qdisc_priv(qdisc);
-- int prio;
--
-- /* guard against zero length rings */
-- if (!qlen)
-- return -EINVAL;
--
-- for (prio = 0; prio < PFIFO_FAST_BANDS; prio++) {
-- struct skb_array *q = band2list(priv, prio);
-- int err;
--
-- err = skb_array_init(q, qlen, GFP_KERNEL);
-- if (err)
-- return -ENOMEM;
-- }
--
-- /* Can by-pass the queue discipline */
-- qdisc->flags |= TCQ_F_CAN_BYPASS;
-- return 0;
--}
--
--static void pfifo_fast_destroy(struct Qdisc *sch)
--{
-- struct pfifo_fast_priv *priv = qdisc_priv(sch);
-- int prio;
--
-- for (prio = 0; prio < PFIFO_FAST_BANDS; prio++) {
-- struct skb_array *q = band2list(priv, prio);
--
-- /* NULL ring is possible if destroy path is due to a failed
-- * skb_array_init() in pfifo_fast_init() case.
-- */
-- if (!q->ring.queue)
-- continue;
-- /* Destroy ring but no need to kfree_skb because a call to
-- * pfifo_fast_reset() has already done that work.
-- */
-- ptr_ring_cleanup(&q->ring, NULL);
-- }
--}
--
--static int pfifo_fast_change_tx_queue_len(struct Qdisc *sch,
-- unsigned int new_len)
--{
-- struct pfifo_fast_priv *priv = qdisc_priv(sch);
-- struct skb_array *bands[PFIFO_FAST_BANDS];
-- int prio;
--
-- for (prio = 0; prio < PFIFO_FAST_BANDS; prio++) {
-- struct skb_array *q = band2list(priv, prio);
--
-- bands[prio] = q;
-- }
--
-- return skb_array_resize_multiple(bands, PFIFO_FAST_BANDS, new_len,
-- GFP_KERNEL);
--}
--
--struct Qdisc_ops pfifo_fast_ops __read_mostly = {
-- .id = "pfifo_fast",
-- .priv_size = sizeof(struct pfifo_fast_priv),
-- .enqueue = pfifo_fast_enqueue,
-- .dequeue = pfifo_fast_dequeue,
-- .peek = pfifo_fast_peek,
-- .init = pfifo_fast_init,
-- .destroy = pfifo_fast_destroy,
-- .reset = pfifo_fast_reset,
-- .dump = pfifo_fast_dump,
-- .change_tx_queue_len = pfifo_fast_change_tx_queue_len,
-- .owner = THIS_MODULE,
-- .static_flags = TCQ_F_NOLOCK | TCQ_F_CPUSTATS,
--};
--EXPORT_SYMBOL(pfifo_fast_ops);
--
- static struct lock_class_key qdisc_tx_busylock;
- static struct lock_class_key qdisc_running_key;
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-06 14:07:32 +0000