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Diffstat (limited to 'net/sched')
-rw-r--r--net/sched/sch_fifo.c42
-rw-r--r--net/sched/sch_netem.c24
-rw-r--r--net/sched/sch_red.c33
-rw-r--r--net/sched/sch_tbf.c33
4 files changed, 50 insertions, 82 deletions
diff --git a/net/sched/sch_fifo.c b/net/sched/sch_fifo.c
index 95ed4822165..82d7d7bbbb1 100644
--- a/net/sched/sch_fifo.c
+++ b/net/sched/sch_fifo.c
@@ -107,3 +107,45 @@ struct Qdisc_ops bfifo_qdisc_ops __read_mostly = {
.owner = THIS_MODULE,
};
EXPORT_SYMBOL(bfifo_qdisc_ops);
+
+/* Pass size change message down to embedded FIFO */
+int fifo_set_limit(struct Qdisc *q, unsigned int limit)
+{
+ struct nlattr *nla;
+ int ret = -ENOMEM;
+
+ /* Hack to avoid sending change message to non-FIFO */
+ if (strncmp(q->ops->id + 1, "fifo", 4) != 0)
+ return 0;
+
+ nla = kmalloc(nla_attr_size(sizeof(struct tc_fifo_qopt)), GFP_KERNEL);
+ if (nla) {
+ nla->nla_type = RTM_NEWQDISC;
+ nla->nla_len = nla_attr_size(sizeof(struct tc_fifo_qopt));
+ ((struct tc_fifo_qopt *)nla_data(nla))->limit = limit;
+
+ ret = q->ops->change(q, nla);
+ kfree(nla);
+ }
+ return ret;
+}
+EXPORT_SYMBOL(fifo_set_limit);
+
+struct Qdisc *fifo_create_dflt(struct Qdisc *sch, struct Qdisc_ops *ops,
+ unsigned int limit)
+{
+ struct Qdisc *q;
+ int err = -ENOMEM;
+
+ q = qdisc_create_dflt(sch->dev, ops, TC_H_MAKE(sch->handle, 1));
+ if (q) {
+ err = fifo_set_limit(q, limit);
+ if (err < 0) {
+ qdisc_destroy(q);
+ q = NULL;
+ }
+ }
+
+ return q ? : ERR_PTR(err);
+}
+EXPORT_SYMBOL(fifo_create_dflt);
diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c
index c9c649b26ea..24697667247 100644
--- a/net/sched/sch_netem.c
+++ b/net/sched/sch_netem.c
@@ -310,28 +310,6 @@ static void netem_reset(struct Qdisc *sch)
qdisc_watchdog_cancel(&q->watchdog);
}
-/* Pass size change message down to embedded FIFO */
-static int set_fifo_limit(struct Qdisc *q, int limit)
-{
- struct nlattr *nla;
- int ret = -ENOMEM;
-
- /* Hack to avoid sending change message to non-FIFO */
- if (strncmp(q->ops->id + 1, "fifo", 4) != 0)
- return 0;
-
- nla = kmalloc(nla_attr_size(sizeof(struct tc_fifo_qopt)), GFP_KERNEL);
- if (nla) {
- nla->nla_type = RTM_NEWQDISC;
- nla->nla_len = nla_attr_size(sizeof(struct tc_fifo_qopt));
- ((struct tc_fifo_qopt *)nla_data(nla))->limit = limit;
-
- ret = q->ops->change(q, nla);
- kfree(nla);
- }
- return ret;
-}
-
/*
* Distribution data is a variable size payload containing
* signed 16 bit values.
@@ -416,7 +394,7 @@ static int netem_change(struct Qdisc *sch, struct nlattr *opt)
if (ret < 0)
return ret;
- ret = set_fifo_limit(q->qdisc, qopt->limit);
+ ret = fifo_set_limit(q->qdisc, qopt->limit);
if (ret) {
pr_debug("netem: can't set fifo limit\n");
return ret;
diff --git a/net/sched/sch_red.c b/net/sched/sch_red.c
index 5c569853b9c..77098acf0ad 100644
--- a/net/sched/sch_red.c
+++ b/net/sched/sch_red.c
@@ -174,33 +174,6 @@ static void red_destroy(struct Qdisc *sch)
qdisc_destroy(q->qdisc);
}
-static struct Qdisc *red_create_dflt(struct Qdisc *sch, u32 limit)
-{
- struct Qdisc *q;
- struct nlattr *nla;
- int ret;
-
- q = qdisc_create_dflt(sch->dev, &bfifo_qdisc_ops,
- TC_H_MAKE(sch->handle, 1));
- if (q) {
- nla = kmalloc(nla_attr_size(sizeof(struct tc_fifo_qopt)),
- GFP_KERNEL);
- if (nla) {
- nla->nla_type = RTM_NEWQDISC;
- nla->nla_len = nla_attr_size(sizeof(struct tc_fifo_qopt));
- ((struct tc_fifo_qopt *)nla_data(nla))->limit = limit;
-
- ret = q->ops->change(q, nla);
- kfree(nla);
-
- if (ret == 0)
- return q;
- }
- qdisc_destroy(q);
- }
- return NULL;
-}
-
static const struct nla_policy red_policy[TCA_RED_MAX + 1] = {
[TCA_RED_PARMS] = { .len = sizeof(struct tc_red_qopt) },
[TCA_RED_STAB] = { .len = RED_STAB_SIZE },
@@ -228,9 +201,9 @@ static int red_change(struct Qdisc *sch, struct nlattr *opt)
ctl = nla_data(tb[TCA_RED_PARMS]);
if (ctl->limit > 0) {
- child = red_create_dflt(sch, ctl->limit);
- if (child == NULL)
- return -ENOMEM;
+ child = fifo_create_dflt(sch, &bfifo_qdisc_ops, ctl->limit);
+ if (IS_ERR(child))
+ return PTR_ERR(child);
}
sch_tree_lock(sch);
diff --git a/net/sched/sch_tbf.c b/net/sched/sch_tbf.c
index 0b7d78f59d8..444c227fcb6 100644
--- a/net/sched/sch_tbf.c
+++ b/net/sched/sch_tbf.c
@@ -242,34 +242,6 @@ static void tbf_reset(struct Qdisc* sch)
qdisc_watchdog_cancel(&q->watchdog);
}
-static struct Qdisc *tbf_create_dflt_qdisc(struct Qdisc *sch, u32 limit)
-{
- struct Qdisc *q;
- struct nlattr *nla;
- int ret;
-
- q = qdisc_create_dflt(sch->dev, &bfifo_qdisc_ops,
- TC_H_MAKE(sch->handle, 1));
- if (q) {
- nla = kmalloc(nla_attr_size(sizeof(struct tc_fifo_qopt)),
- GFP_KERNEL);
- if (nla) {
- nla->nla_type = RTM_NEWQDISC;
- nla->nla_len = nla_attr_size(sizeof(struct tc_fifo_qopt));
- ((struct tc_fifo_qopt *)nla_data(nla))->limit = limit;
-
- ret = q->ops->change(q, nla);
- kfree(nla);
-
- if (ret == 0)
- return q;
- }
- qdisc_destroy(q);
- }
-
- return NULL;
-}
-
static const struct nla_policy tbf_policy[TCA_TBF_MAX + 1] = {
[TCA_TBF_PARMS] = { .len = sizeof(struct tc_tbf_qopt) },
[TCA_TBF_RTAB] = { .type = NLA_BINARY, .len = TC_RTAB_SIZE },
@@ -322,8 +294,11 @@ static int tbf_change(struct Qdisc* sch, struct nlattr *opt)
goto done;
if (qopt->limit > 0) {
- if ((child = tbf_create_dflt_qdisc(sch, qopt->limit)) == NULL)
+ child = fifo_create_dflt(sch, &bfifo_qdisc_ops, qopt->limit);
+ if (IS_ERR(child)) {
+ err = PTR_ERR(child);
goto done;
+ }
}
sch_tree_lock(sch);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 09:44:32 +0000