static int fq_change(struct Qdisc *sch, struct nlattr *opt) { struct fq_sched_data *q = qdisc_priv(sch); struct nlattr *tb[TCA_FQ_MAX + 1]; int err, drop_count = 0; unsigned drop_len = 0; u32 fq_log; if (!opt) return -EINVAL; err = nla_parse_nested(tb, TCA_FQ_MAX, opt, fq_policy); if (err < 0) return err; sch_tree_lock(sch); fq_log = q->fq_trees_log; if (tb[TCA_FQ_BUCKETS_LOG]) { u32 nval = nla_get_u32(tb[TCA_FQ_BUCKETS_LOG]); if (nval >= 1 && nval <= ilog2(256*1024)) fq_log = nval; else err = -EINVAL; } if (tb[TCA_FQ_PLIMIT]) sch->limit = nla_get_u32(tb[TCA_FQ_PLIMIT]); if (tb[TCA_FQ_FLOW_PLIMIT]) q->flow_plimit = nla_get_u32(tb[TCA_FQ_FLOW_PLIMIT]); if (tb[TCA_FQ_QUANTUM]) { u32 quantum = nla_get_u32(tb[TCA_FQ_QUANTUM]); if (quantum > 0) q->quantum = quantum; else err = -EINVAL; } if (tb[TCA_FQ_INITIAL_QUANTUM]) q->initial_quantum = nla_get_u32(tb[TCA_FQ_INITIAL_QUANTUM]); if (tb[TCA_FQ_FLOW_DEFAULT_RATE]) pr_warn_ratelimited("sch_fq: defrate %u ignored.\n", nla_get_u32(tb[TCA_FQ_FLOW_DEFAULT_RATE])); if (tb[TCA_FQ_FLOW_MAX_RATE]) q->flow_max_rate = nla_get_u32(tb[TCA_FQ_FLOW_MAX_RATE]); if (tb[TCA_FQ_RATE_ENABLE]) { u32 enable = nla_get_u32(tb[TCA_FQ_RATE_ENABLE]); if (enable <= 1) q->rate_enable = enable; else err = -EINVAL; } if (tb[TCA_FQ_FLOW_REFILL_DELAY]) { u32 usecs_delay = nla_get_u32(tb[TCA_FQ_FLOW_REFILL_DELAY]) ; q->flow_refill_delay = usecs_to_jiffies(usecs_delay); } if (tb[TCA_FQ_ORPHAN_MASK]) q->orphan_mask = nla_get_u32(tb[TCA_FQ_ORPHAN_MASK]); if (!err) { sch_tree_unlock(sch); err = fq_resize(sch, fq_log); sch_tree_lock(sch); } while (sch->q.qlen > sch->limit) { struct sk_buff *skb = fq_dequeue(sch); if (!skb) break; drop_len += qdisc_pkt_len(skb); rtnl_kfree_skbs(skb, skb); drop_count++; } qdisc_tree_reduce_backlog(sch, drop_count, drop_len); sch_tree_unlock(sch); return err; }
static int fq_change(struct Qdisc *sch, struct nlattr *opt) { struct fq_sched_data *q = qdisc_priv(sch); struct nlattr *tb[TCA_FQ_MAX + 1]; int err, drop_count = 0; u32 fq_log; if (!opt) return -EINVAL; err = nla_parse_nested(tb, TCA_FQ_MAX, opt, fq_policy); if (err < 0) return err; sch_tree_lock(sch); fq_log = q->fq_trees_log; if (tb[TCA_FQ_BUCKETS_LOG]) { u32 nval = nla_get_u32(tb[TCA_FQ_BUCKETS_LOG]); if (nval >= 1 && nval <= ilog2(256*1024)) fq_log = nval; else err = -EINVAL; } if (tb[TCA_FQ_PLIMIT]) sch->limit = nla_get_u32(tb[TCA_FQ_PLIMIT]); if (tb[TCA_FQ_FLOW_PLIMIT]) q->flow_plimit = nla_get_u32(tb[TCA_FQ_FLOW_PLIMIT]); if (tb[TCA_FQ_QUANTUM]) q->quantum = nla_get_u32(tb[TCA_FQ_QUANTUM]); if (tb[TCA_FQ_INITIAL_QUANTUM]) q->initial_quantum = nla_get_u32(tb[TCA_FQ_INITIAL_QUANTUM]); if (tb[TCA_FQ_FLOW_DEFAULT_RATE]) q->flow_default_rate = nla_get_u32(tb[TCA_FQ_FLOW_DEFAULT_RATE]); if (tb[TCA_FQ_FLOW_MAX_RATE]) q->flow_max_rate = nla_get_u32(tb[TCA_FQ_FLOW_MAX_RATE]); if (tb[TCA_FQ_RATE_ENABLE]) { u32 enable = nla_get_u32(tb[TCA_FQ_RATE_ENABLE]); if (enable <= 1) q->rate_enable = enable; else err = -EINVAL; } if (!err) err = fq_resize(q, fq_log); while (sch->q.qlen > sch->limit) { struct sk_buff *skb = fq_dequeue(sch); if (!skb) break; kfree_skb(skb); drop_count++; } qdisc_tree_decrease_qlen(sch, drop_count); sch_tree_unlock(sch); return err; }