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-rw-r--r--net/sched/sch_sfq.c52
1 files changed, 33 insertions, 19 deletions
diff --git a/net/sched/sch_sfq.c b/net/sched/sch_sfq.c
index e9d5c911576d..16feb88503af 100644
--- a/net/sched/sch_sfq.c
+++ b/net/sched/sch_sfq.c
@@ -544,10 +544,38 @@ static int sfq_change(struct Qdisc *sch, struct nlattr *opt)
return 0;
}
+static void *sfq_alloc(size_t sz)
+{
+ void *ptr = kmalloc(sz, GFP_KERNEL | __GFP_NOWARN);
+
+ if (!ptr)
+ ptr = vmalloc(sz);
+ return ptr;
+}
+
+static void sfq_free(void *addr)
+{
+ if (addr) {
+ if (is_vmalloc_addr(addr))
+ vfree(addr);
+ else
+ kfree(addr);
+ }
+}
+
+static void sfq_destroy(struct Qdisc *sch)
+{
+ struct sfq_sched_data *q = qdisc_priv(sch);
+
+ tcf_destroy_chain(&q->filter_list);
+ q->perturb_period = 0;
+ del_timer_sync(&q->perturb_timer);
+ sfq_free(q->ht);
+}
+
static int sfq_init(struct Qdisc *sch, struct nlattr *opt)
{
struct sfq_sched_data *q = qdisc_priv(sch);
- size_t sz;
int i;
q->perturb_timer.function = sfq_perturbation;
@@ -574,12 +602,11 @@ static int sfq_init(struct Qdisc *sch, struct nlattr *opt)
return err;
}
- sz = sizeof(q->ht[0]) * q->divisor;
- q->ht = kmalloc(sz, GFP_KERNEL);
- if (!q->ht && sz > PAGE_SIZE)
- q->ht = vmalloc(sz);
- if (!q->ht)
+ q->ht = sfq_alloc(sizeof(q->ht[0]) * q->divisor);
+ if (!q->ht) {
+ sfq_destroy(sch);
return -ENOMEM;
+ }
for (i = 0; i < q->divisor; i++)
q->ht[i] = SFQ_EMPTY_SLOT;
@@ -594,19 +621,6 @@ static int sfq_init(struct Qdisc *sch, struct nlattr *opt)
return 0;
}
-static void sfq_destroy(struct Qdisc *sch)
-{
- struct sfq_sched_data *q = qdisc_priv(sch);
-
- tcf_destroy_chain(&q->filter_list);
- q->perturb_period = 0;
- del_timer_sync(&q->perturb_timer);
- if (is_vmalloc_addr(q->ht))
- vfree(q->ht);
- else
- kfree(q->ht);
-}
-
static int sfq_dump(struct Qdisc *sch, struct sk_buff *skb)
{
struct sfq_sched_data *q = qdisc_priv(sch);