From: Zhengchao Shao shaozhengchao@huawei.com
[ Upstream commit c19d893fbf3f2f8fa864ae39652c7fee939edde2 ]
qdisc_reset() is clearing qdisc->q.qlen and qdisc->qstats.backlog _after_ calling qdisc->ops->reset. There is no need to clear them again in the specific reset function.
Signed-off-by: Zhengchao Shao shaozhengchao@huawei.com Link: https://lore.kernel.org/r/20220824005231.345727-1-shaozhengchao@huawei.com Signed-off-by: Paolo Abeni pabeni@redhat.com Stable-dep-of: 2a3fc78210b9 ("net: sched: sfb: fix null pointer access issue when sfb_init() fails") Signed-off-by: Sasha Levin sashal@kernel.org --- include/net/sch_generic.h | 1 - net/sched/sch_atm.c | 1 - net/sched/sch_cbq.c | 1 - net/sched/sch_choke.c | 2 -- net/sched/sch_drr.c | 2 -- net/sched/sch_dsmark.c | 2 -- net/sched/sch_etf.c | 3 --- net/sched/sch_ets.c | 2 -- net/sched/sch_fq_codel.c | 2 -- net/sched/sch_fq_pie.c | 3 --- net/sched/sch_hfsc.c | 2 -- net/sched/sch_htb.c | 2 -- net/sched/sch_multiq.c | 1 - net/sched/sch_prio.c | 2 -- net/sched/sch_qfq.c | 2 -- net/sched/sch_red.c | 2 -- net/sched/sch_sfb.c | 2 -- net/sched/sch_skbprio.c | 3 --- net/sched/sch_taprio.c | 2 -- net/sched/sch_tbf.c | 2 -- net/sched/sch_teql.c | 1 - 21 files changed, 40 deletions(-)
diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h index bed2387af456..e7e8c318925d 100644 --- a/include/net/sch_generic.h +++ b/include/net/sch_generic.h @@ -1178,7 +1178,6 @@ static inline void __qdisc_reset_queue(struct qdisc_skb_head *qh) static inline void qdisc_reset_queue(struct Qdisc *sch) { __qdisc_reset_queue(&sch->q); - sch->qstats.backlog = 0; }
static inline struct Qdisc *qdisc_replace(struct Qdisc *sch, struct Qdisc *new, diff --git a/net/sched/sch_atm.c b/net/sched/sch_atm.c index 1c281cc81f57..794c7377cd7e 100644 --- a/net/sched/sch_atm.c +++ b/net/sched/sch_atm.c @@ -575,7 +575,6 @@ static void atm_tc_reset(struct Qdisc *sch) pr_debug("atm_tc_reset(sch %p,[qdisc %p])\n", sch, p); list_for_each_entry(flow, &p->flows, list) qdisc_reset(flow->q); - sch->q.qlen = 0; }
static void atm_tc_destroy(struct Qdisc *sch) diff --git a/net/sched/sch_cbq.c b/net/sched/sch_cbq.c index 4a78fcf5d4f9..9a3dff02b7a2 100644 --- a/net/sched/sch_cbq.c +++ b/net/sched/sch_cbq.c @@ -1053,7 +1053,6 @@ cbq_reset(struct Qdisc *sch) cl->cpriority = cl->priority; } } - sch->q.qlen = 0; }
diff --git a/net/sched/sch_choke.c b/net/sched/sch_choke.c index 2adbd945bf15..25d2daaa8122 100644 --- a/net/sched/sch_choke.c +++ b/net/sched/sch_choke.c @@ -315,8 +315,6 @@ static void choke_reset(struct Qdisc *sch) rtnl_qdisc_drop(skb, sch); }
- sch->q.qlen = 0; - sch->qstats.backlog = 0; if (q->tab) memset(q->tab, 0, (q->tab_mask + 1) * sizeof(struct sk_buff *)); q->head = q->tail = 0; diff --git a/net/sched/sch_drr.c b/net/sched/sch_drr.c index dde564670ad8..08424aac6da8 100644 --- a/net/sched/sch_drr.c +++ b/net/sched/sch_drr.c @@ -443,8 +443,6 @@ static void drr_reset_qdisc(struct Qdisc *sch) qdisc_reset(cl->qdisc); } } - sch->qstats.backlog = 0; - sch->q.qlen = 0; }
static void drr_destroy_qdisc(struct Qdisc *sch) diff --git a/net/sched/sch_dsmark.c b/net/sched/sch_dsmark.c index 76ed1a05ded2..a75bc7f80cd7 100644 --- a/net/sched/sch_dsmark.c +++ b/net/sched/sch_dsmark.c @@ -408,8 +408,6 @@ static void dsmark_reset(struct Qdisc *sch) pr_debug("%s(sch %p,[qdisc %p])\n", __func__, sch, p); if (p->q) qdisc_reset(p->q); - sch->qstats.backlog = 0; - sch->q.qlen = 0; }
static void dsmark_destroy(struct Qdisc *sch) diff --git a/net/sched/sch_etf.c b/net/sched/sch_etf.c index c48f91075b5c..d96103b0e2bf 100644 --- a/net/sched/sch_etf.c +++ b/net/sched/sch_etf.c @@ -445,9 +445,6 @@ static void etf_reset(struct Qdisc *sch) timesortedlist_clear(sch); __qdisc_reset_queue(&sch->q);
- sch->qstats.backlog = 0; - sch->q.qlen = 0; - q->last = 0; }
diff --git a/net/sched/sch_ets.c b/net/sched/sch_ets.c index 9c224872ef03..05817c55692f 100644 --- a/net/sched/sch_ets.c +++ b/net/sched/sch_ets.c @@ -722,8 +722,6 @@ static void ets_qdisc_reset(struct Qdisc *sch) } for (band = 0; band < q->nbands; band++) qdisc_reset(q->classes[band].qdisc); - sch->qstats.backlog = 0; - sch->q.qlen = 0; }
static void ets_qdisc_destroy(struct Qdisc *sch) diff --git a/net/sched/sch_fq_codel.c b/net/sched/sch_fq_codel.c index 99e8db262198..01d6eea5b0ce 100644 --- a/net/sched/sch_fq_codel.c +++ b/net/sched/sch_fq_codel.c @@ -347,8 +347,6 @@ static void fq_codel_reset(struct Qdisc *sch) codel_vars_init(&flow->cvars); } memset(q->backlogs, 0, q->flows_cnt * sizeof(u32)); - sch->q.qlen = 0; - sch->qstats.backlog = 0; q->memory_usage = 0; }
diff --git a/net/sched/sch_fq_pie.c b/net/sched/sch_fq_pie.c index c70802785518..cf04f70e96bf 100644 --- a/net/sched/sch_fq_pie.c +++ b/net/sched/sch_fq_pie.c @@ -521,9 +521,6 @@ static void fq_pie_reset(struct Qdisc *sch) INIT_LIST_HEAD(&flow->flowchain); pie_vars_init(&flow->vars); } - - sch->q.qlen = 0; - sch->qstats.backlog = 0; }
static void fq_pie_destroy(struct Qdisc *sch) diff --git a/net/sched/sch_hfsc.c b/net/sched/sch_hfsc.c index d1902fca9844..cdc43a06aa9b 100644 --- a/net/sched/sch_hfsc.c +++ b/net/sched/sch_hfsc.c @@ -1484,8 +1484,6 @@ hfsc_reset_qdisc(struct Qdisc *sch) } q->eligible = RB_ROOT; qdisc_watchdog_cancel(&q->watchdog); - sch->qstats.backlog = 0; - sch->q.qlen = 0; }
static void diff --git a/net/sched/sch_htb.c b/net/sched/sch_htb.c index cd70dbcbd72f..c3ba018fd083 100644 --- a/net/sched/sch_htb.c +++ b/net/sched/sch_htb.c @@ -966,8 +966,6 @@ static void htb_reset(struct Qdisc *sch) } qdisc_watchdog_cancel(&q->watchdog); __qdisc_reset_queue(&q->direct_queue); - sch->q.qlen = 0; - sch->qstats.backlog = 0; memset(q->hlevel, 0, sizeof(q->hlevel)); memset(q->row_mask, 0, sizeof(q->row_mask)); } diff --git a/net/sched/sch_multiq.c b/net/sched/sch_multiq.c index 5c27b4270b90..1c6dbcfa89b8 100644 --- a/net/sched/sch_multiq.c +++ b/net/sched/sch_multiq.c @@ -152,7 +152,6 @@ multiq_reset(struct Qdisc *sch)
for (band = 0; band < q->bands; band++) qdisc_reset(q->queues[band]); - sch->q.qlen = 0; q->curband = 0; }
diff --git a/net/sched/sch_prio.c b/net/sched/sch_prio.c index 3eabb871a1d5..1c805fe05b82 100644 --- a/net/sched/sch_prio.c +++ b/net/sched/sch_prio.c @@ -135,8 +135,6 @@ prio_reset(struct Qdisc *sch)
for (prio = 0; prio < q->bands; prio++) qdisc_reset(q->queues[prio]); - sch->qstats.backlog = 0; - sch->q.qlen = 0; }
static int prio_offload(struct Qdisc *sch, struct tc_prio_qopt *qopt) diff --git a/net/sched/sch_qfq.c b/net/sched/sch_qfq.c index af8c63a9ec18..1d1d81aeb389 100644 --- a/net/sched/sch_qfq.c +++ b/net/sched/sch_qfq.c @@ -1458,8 +1458,6 @@ static void qfq_reset_qdisc(struct Qdisc *sch) qdisc_reset(cl->qdisc); } } - sch->qstats.backlog = 0; - sch->q.qlen = 0; }
static void qfq_destroy_qdisc(struct Qdisc *sch) diff --git a/net/sched/sch_red.c b/net/sched/sch_red.c index 40adf1f07a82..f1e013e3f04a 100644 --- a/net/sched/sch_red.c +++ b/net/sched/sch_red.c @@ -176,8 +176,6 @@ static void red_reset(struct Qdisc *sch) struct red_sched_data *q = qdisc_priv(sch);
qdisc_reset(q->qdisc); - sch->qstats.backlog = 0; - sch->q.qlen = 0; red_restart(&q->vars); }
diff --git a/net/sched/sch_sfb.c b/net/sched/sch_sfb.c index b2724057629f..0e1cb517b0d9 100644 --- a/net/sched/sch_sfb.c +++ b/net/sched/sch_sfb.c @@ -456,8 +456,6 @@ static void sfb_reset(struct Qdisc *sch) struct sfb_sched_data *q = qdisc_priv(sch);
qdisc_reset(q->qdisc); - sch->qstats.backlog = 0; - sch->q.qlen = 0; q->slot = 0; q->double_buffering = false; sfb_zero_all_buckets(q); diff --git a/net/sched/sch_skbprio.c b/net/sched/sch_skbprio.c index 7a5e4c454715..df72fb83d9c7 100644 --- a/net/sched/sch_skbprio.c +++ b/net/sched/sch_skbprio.c @@ -213,9 +213,6 @@ static void skbprio_reset(struct Qdisc *sch) struct skbprio_sched_data *q = qdisc_priv(sch); int prio;
- sch->qstats.backlog = 0; - sch->q.qlen = 0; - for (prio = 0; prio < SKBPRIO_MAX_PRIORITY; prio++) __skb_queue_purge(&q->qdiscs[prio]);
diff --git a/net/sched/sch_taprio.c b/net/sched/sch_taprio.c index ab8835a72cee..7f33b31c7b8b 100644 --- a/net/sched/sch_taprio.c +++ b/net/sched/sch_taprio.c @@ -1626,8 +1626,6 @@ static void taprio_reset(struct Qdisc *sch) if (q->qdiscs[i]) qdisc_reset(q->qdiscs[i]); } - sch->qstats.backlog = 0; - sch->q.qlen = 0; }
static void taprio_destroy(struct Qdisc *sch) diff --git a/net/sched/sch_tbf.c b/net/sched/sch_tbf.c index 6eb17004a9e4..7461e5c67d50 100644 --- a/net/sched/sch_tbf.c +++ b/net/sched/sch_tbf.c @@ -316,8 +316,6 @@ static void tbf_reset(struct Qdisc *sch) struct tbf_sched_data *q = qdisc_priv(sch);
qdisc_reset(q->qdisc); - sch->qstats.backlog = 0; - sch->q.qlen = 0; q->t_c = ktime_get_ns(); q->tokens = q->buffer; q->ptokens = q->mtu; diff --git a/net/sched/sch_teql.c b/net/sched/sch_teql.c index 6af6b95bdb67..79aaab51cbf5 100644 --- a/net/sched/sch_teql.c +++ b/net/sched/sch_teql.c @@ -124,7 +124,6 @@ teql_reset(struct Qdisc *sch) struct teql_sched_data *dat = qdisc_priv(sch);
skb_queue_purge(&dat->q); - sch->q.qlen = 0; }
static void