codel: add ce_threshold attribute

[deliverable/linux.git] / net / sched / sch_fq_codel.c

diff --git a/net/sched/sch_fq_codel.c b/net/sched/sch_fq_codel.c
index a6fc53d69513baa3578e6b73a7947ae1dee8ee0c..778739786b3211b2643d06e60897fbf7371fef28 100644 (file)
--- a/net/sched/sch_fq_codel.c
+++ b/net/sched/sch_fq_codel.c
@@ -6,7 +6,7 @@
  *     as published by the Free Software Foundation; either version
  *     2 of the License, or (at your option) any later version.
  *
- *  Copyright (C) 2012 Eric Dumazet <edumazet@google.com>
+ *  Copyright (C) 2012,2015 Eric Dumazet <edumazet@google.com>
  */
 
 #include <linux/module.h>
@@ -292,6 +292,7 @@ static const struct nla_policy fq_codel_policy[TCA_FQ_CODEL_MAX + 1] = {
        [TCA_FQ_CODEL_ECN]      = { .type = NLA_U32 },
        [TCA_FQ_CODEL_FLOWS]    = { .type = NLA_U32 },
        [TCA_FQ_CODEL_QUANTUM]  = { .type = NLA_U32 },
+       [TCA_FQ_CODEL_CE_THRESHOLD] = { .type = NLA_U32 },
 };
 
 static int fq_codel_change(struct Qdisc *sch, struct nlattr *opt)
@@ -322,6 +323,12 @@ static int fq_codel_change(struct Qdisc *sch, struct nlattr *opt)
                q->cparams.target = (target * NSEC_PER_USEC) >> CODEL_SHIFT;
        }
 
+       if (tb[TCA_FQ_CODEL_CE_THRESHOLD]) {
+               u64 val = nla_get_u32(tb[TCA_FQ_CODEL_CE_THRESHOLD]);
+
+               q->cparams.ce_threshold = (val * NSEC_PER_USEC) >> CODEL_SHIFT;
+       }
+
        if (tb[TCA_FQ_CODEL_INTERVAL]) {
                u64 interval = nla_get_u32(tb[TCA_FQ_CODEL_INTERVAL]);
 
@@ -441,6 +448,11 @@ static int fq_codel_dump(struct Qdisc *sch, struct sk_buff *skb)
                        q->flows_cnt))
                goto nla_put_failure;
 
+       if (q->cparams.ce_threshold != CODEL_DISABLED_THRESHOLD &&
+           nla_put_u32(skb, TCA_FQ_CODEL_CE_THRESHOLD,
+                       codel_time_to_us(q->cparams.ce_threshold)))
+               goto nla_put_failure;
+
        return nla_nest_end(skb, opts);
 
 nla_put_failure:
@@ -459,6 +471,7 @@ static int fq_codel_dump_stats(struct Qdisc *sch, struct gnet_dump *d)
        st.qdisc_stats.drop_overlimit = q->drop_overlimit;
        st.qdisc_stats.ecn_mark = q->cstats.ecn_mark;
        st.qdisc_stats.new_flow_count = q->new_flow_count;
+       st.qdisc_stats.ce_mark = q->cstats.ce_mark;
 
        list_for_each(pos, &q->new_flows)
                st.qdisc_stats.new_flows_len++;