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-rw-r--r--net/sched/cls_api.c16
-rw-r--r--net/sched/sch_api.c6
-rw-r--r--net/sched/sch_cbq.c10
-rw-r--r--net/sched/sch_fq_codel.c4
-rw-r--r--net/sched/sch_generic.c2
-rw-r--r--net/sched/sch_hfsc.c10
-rw-r--r--net/sched/sch_hhf.c3
-rw-r--r--net/sched/sch_htb.c5
-rw-r--r--net/sched/sch_multiq.c7
-rw-r--r--net/sched/sch_netem.c4
-rw-r--r--net/sched/sch_sfq.c6
-rw-r--r--net/sched/sch_tbf.c5
12 files changed, 42 insertions, 36 deletions
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index d470a4e2de58..ea6c65fd5fc5 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -200,9 +200,15 @@ static void tcf_chain_flush(struct tcf_chain *chain)
static void tcf_chain_destroy(struct tcf_chain *chain)
{
- list_del(&chain->list);
- tcf_chain_flush(chain);
- kfree(chain);
+ /* May be already removed from the list by the previous call. */
+ if (!list_empty(&chain->list))
+ list_del_init(&chain->list);
+
+ /* There might still be a reference held when we got here from
+ * tcf_block_put. Wait for the user to drop reference before free.
+ */
+ if (!chain->refcnt)
+ kfree(chain);
}
struct tcf_chain *tcf_chain_get(struct tcf_block *block, u32 chain_index,
@@ -273,8 +279,10 @@ void tcf_block_put(struct tcf_block *block)
if (!block)
return;
- list_for_each_entry_safe(chain, tmp, &block->chain_list, list)
+ list_for_each_entry_safe(chain, tmp, &block->chain_list, list) {
+ tcf_chain_flush(chain);
tcf_chain_destroy(chain);
+ }
kfree(block);
}
EXPORT_SYMBOL(tcf_block_put);
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index 929b024f41ba..c6deb74e3d2f 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -927,7 +927,7 @@ static int qdisc_graft(struct net_device *dev, struct Qdisc *parent,
old = dev_graft_qdisc(dev_queue, new);
if (new && i > 0)
- refcount_inc(&new->refcnt);
+ qdisc_refcount_inc(new);
if (!ingress)
qdisc_destroy(old);
@@ -938,7 +938,7 @@ skip:
notify_and_destroy(net, skb, n, classid,
dev->qdisc, new);
if (new && !new->ops->attach)
- refcount_inc(&new->refcnt);
+ qdisc_refcount_inc(new);
dev->qdisc = new ? : &noop_qdisc;
if (new && new->ops->attach)
@@ -1347,7 +1347,7 @@ replay:
if (q == p ||
(p && check_loop(q, p, 0)))
return -ELOOP;
- refcount_inc(&q->refcnt);
+ qdisc_refcount_inc(q);
goto graft;
} else {
if (!q)
diff --git a/net/sched/sch_cbq.c b/net/sched/sch_cbq.c
index 3ec8bec109bb..dcef97fa8047 100644
--- a/net/sched/sch_cbq.c
+++ b/net/sched/sch_cbq.c
@@ -1138,6 +1138,13 @@ static int cbq_init(struct Qdisc *sch, struct nlattr *opt)
struct tc_ratespec *r;
int err;
+ qdisc_watchdog_init(&q->watchdog, sch);
+ hrtimer_init(&q->delay_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS_PINNED);
+ q->delay_timer.function = cbq_undelay;
+
+ if (!opt)
+ return -EINVAL;
+
err = nla_parse_nested(tb, TCA_CBQ_MAX, opt, cbq_policy, NULL);
if (err < 0)
return err;
@@ -1175,9 +1182,6 @@ static int cbq_init(struct Qdisc *sch, struct nlattr *opt)
q->link.avpkt = q->link.allot/2;
q->link.minidle = -0x7FFFFFFF;
- qdisc_watchdog_init(&q->watchdog, sch);
- hrtimer_init(&q->delay_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS_PINNED);
- q->delay_timer.function = cbq_undelay;
q->toplevel = TC_CBQ_MAXLEVEL;
q->now = psched_get_time();
diff --git a/net/sched/sch_fq_codel.c b/net/sched/sch_fq_codel.c
index 7699b50688cd..de3b57ceca7b 100644
--- a/net/sched/sch_fq_codel.c
+++ b/net/sched/sch_fq_codel.c
@@ -491,10 +491,8 @@ static int fq_codel_init(struct Qdisc *sch, struct nlattr *opt)
if (!q->flows)
return -ENOMEM;
q->backlogs = kvzalloc(q->flows_cnt * sizeof(u32), GFP_KERNEL);
- if (!q->backlogs) {
- kvfree(q->flows);
+ if (!q->backlogs)
return -ENOMEM;
- }
for (i = 0; i < q->flows_cnt; i++) {
struct fq_codel_flow *flow = q->flows + i;
diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
index c6b89a34e8d2..92237e75dbbc 100644
--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
@@ -789,7 +789,7 @@ static void attach_default_qdiscs(struct net_device *dev)
dev->priv_flags & IFF_NO_QUEUE) {
netdev_for_each_tx_queue(dev, attach_one_default_qdisc, NULL);
dev->qdisc = txq->qdisc_sleeping;
- refcount_inc(&dev->qdisc->refcnt);
+ qdisc_refcount_inc(dev->qdisc);
} else {
qdisc = qdisc_create_dflt(txq, &mq_qdisc_ops, TC_H_ROOT);
if (qdisc) {
diff --git a/net/sched/sch_hfsc.c b/net/sched/sch_hfsc.c
index 7c7820d0fdc7..daaf214e5201 100644
--- a/net/sched/sch_hfsc.c
+++ b/net/sched/sch_hfsc.c
@@ -1378,6 +1378,8 @@ hfsc_init_qdisc(struct Qdisc *sch, struct nlattr *opt)
struct tc_hfsc_qopt *qopt;
int err;
+ qdisc_watchdog_init(&q->watchdog, sch);
+
if (opt == NULL || nla_len(opt) < sizeof(*qopt))
return -EINVAL;
qopt = nla_data(opt);
@@ -1390,7 +1392,7 @@ hfsc_init_qdisc(struct Qdisc *sch, struct nlattr *opt)
err = tcf_block_get(&q->root.block, &q->root.filter_list);
if (err)
- goto err_tcf;
+ return err;
q->root.cl_common.classid = sch->handle;
q->root.sched = q;
@@ -1407,13 +1409,7 @@ hfsc_init_qdisc(struct Qdisc *sch, struct nlattr *opt)
qdisc_class_hash_insert(&q->clhash, &q->root.cl_common);
qdisc_class_hash_grow(sch, &q->clhash);
- qdisc_watchdog_init(&q->watchdog, sch);
-
return 0;
-
-err_tcf:
- qdisc_class_hash_destroy(&q->clhash);
- return err;
}
static int
diff --git a/net/sched/sch_hhf.c b/net/sched/sch_hhf.c
index 51d3ba682af9..73a53c08091b 100644
--- a/net/sched/sch_hhf.c
+++ b/net/sched/sch_hhf.c
@@ -477,6 +477,9 @@ static void hhf_destroy(struct Qdisc *sch)
kvfree(q->hhf_valid_bits[i]);
}
+ if (!q->hh_flows)
+ return;
+
for (i = 0; i < HH_FLOWS_CNT; i++) {
struct hh_flow_state *flow, *next;
struct list_head *head = &q->hh_flows[i];
diff --git a/net/sched/sch_htb.c b/net/sched/sch_htb.c
index f955b59d3c7c..7e148376ba52 100644
--- a/net/sched/sch_htb.c
+++ b/net/sched/sch_htb.c
@@ -1020,6 +1020,9 @@ static int htb_init(struct Qdisc *sch, struct nlattr *opt)
int err;
int i;
+ qdisc_watchdog_init(&q->watchdog, sch);
+ INIT_WORK(&q->work, htb_work_func);
+
if (!opt)
return -EINVAL;
@@ -1044,8 +1047,6 @@ static int htb_init(struct Qdisc *sch, struct nlattr *opt)
for (i = 0; i < TC_HTB_NUMPRIO; i++)
INIT_LIST_HEAD(q->drops + i);
- qdisc_watchdog_init(&q->watchdog, sch);
- INIT_WORK(&q->work, htb_work_func);
qdisc_skb_head_init(&q->direct_queue);
if (tb[TCA_HTB_DIRECT_QLEN])
diff --git a/net/sched/sch_multiq.c b/net/sched/sch_multiq.c
index a5df979b6248..ff4fc3e0facd 100644
--- a/net/sched/sch_multiq.c
+++ b/net/sched/sch_multiq.c
@@ -257,12 +257,7 @@ static int multiq_init(struct Qdisc *sch, struct nlattr *opt)
for (i = 0; i < q->max_bands; i++)
q->queues[i] = &noop_qdisc;
- err = multiq_tune(sch, opt);
-
- if (err)
- kfree(q->queues);
-
- return err;
+ return multiq_tune(sch, opt);
}
static int multiq_dump(struct Qdisc *sch, struct sk_buff *skb)
diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c
index cf5aad0aabfc..b1266e75ca43 100644
--- a/net/sched/sch_netem.c
+++ b/net/sched/sch_netem.c
@@ -933,11 +933,11 @@ static int netem_init(struct Qdisc *sch, struct nlattr *opt)
struct netem_sched_data *q = qdisc_priv(sch);
int ret;
+ qdisc_watchdog_init(&q->watchdog, sch);
+
if (!opt)
return -EINVAL;
- qdisc_watchdog_init(&q->watchdog, sch);
-
q->loss_model = CLG_RANDOM;
ret = netem_change(sch, opt);
if (ret)
diff --git a/net/sched/sch_sfq.c b/net/sched/sch_sfq.c
index e0f029a887ac..74ea863b8240 100644
--- a/net/sched/sch_sfq.c
+++ b/net/sched/sch_sfq.c
@@ -722,13 +722,13 @@ static int sfq_init(struct Qdisc *sch, struct nlattr *opt)
int i;
int err;
+ setup_deferrable_timer(&q->perturb_timer, sfq_perturbation,
+ (unsigned long)sch);
+
err = tcf_block_get(&q->block, &q->filter_list);
if (err)
return err;
- setup_deferrable_timer(&q->perturb_timer, sfq_perturbation,
- (unsigned long)sch);
-
for (i = 0; i < SFQ_MAX_DEPTH + 1; i++) {
q->dep[i].next = i + SFQ_MAX_FLOWS;
q->dep[i].prev = i + SFQ_MAX_FLOWS;
diff --git a/net/sched/sch_tbf.c b/net/sched/sch_tbf.c
index d5dba972ab06..120f4f365967 100644
--- a/net/sched/sch_tbf.c
+++ b/net/sched/sch_tbf.c
@@ -425,12 +425,13 @@ static int tbf_init(struct Qdisc *sch, struct nlattr *opt)
{
struct tbf_sched_data *q = qdisc_priv(sch);
+ qdisc_watchdog_init(&q->watchdog, sch);
+ q->qdisc = &noop_qdisc;
+
if (opt == NULL)
return -EINVAL;
q->t_c = ktime_get_ns();
- qdisc_watchdog_init(&q->watchdog, sch);
- q->qdisc = &noop_qdisc;
return tbf_change(sch, opt);
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-24 21:11:55 +0300