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[LTS 8.8] net/sched: sch_qfq: account for stab overhead in qfq_enqueue #271

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Merged
merged 1 commit into from
May 27, 2025
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[LTS 8.8] net/sched: sch_qfq: account for stab overhead in qfq_enqueue #271

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7 changes: 6 additions & 1 deletion net/sched/sch_qfq.c
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Original file line number Diff line number Diff line change
Expand Up @@ -378,8 +378,13 @@ static int qfq_change_agg(struct Qdisc *sch, struct qfq_class *cl, u32 weight,
u32 lmax)
{
struct qfq_sched *q = qdisc_priv(sch);
struct qfq_aggregate *new_agg = qfq_find_agg(q, lmax, weight);
struct qfq_aggregate *new_agg;

/* 'lmax' can range from [QFQ_MIN_LMAX, pktlen + stab overhead] */
if (lmax > (1UL << QFQ_MTU_SHIFT))
return -EINVAL;

new_agg = qfq_find_agg(q, lmax, weight);
if (new_agg == NULL) { /* create new aggregate */
new_agg = kzalloc(sizeof(*new_agg), GFP_ATOMIC);
if (new_agg == NULL)
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