diff options
author | 2016-04-11 10:41:07 +0300 | |
---|---|---|
committer | 2016-04-13 08:17:18 +0300 | |
commit | e09b41010ba33a20a87472ee821fa407a5b8da36 (patch) | |
tree | d10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/net/sched/sch_fq_codel.c | |
parent | f93b97fd65072de626c074dbe099a1fff05ce060 (diff) |
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page.
During the rebasing, the following patch collided:
Force tick interrupt and get rid of softirq magic(I70131fb85).
Collisions have been removed because its logic was found on the
source already.
Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/net/sched/sch_fq_codel.c')
-rw-r--r-- | kernel/net/sched/sch_fq_codel.c | 61 |
1 files changed, 46 insertions, 15 deletions
diff --git a/kernel/net/sched/sch_fq_codel.c b/kernel/net/sched/sch_fq_codel.c index 9291598b5..4c834e93d 100644 --- a/kernel/net/sched/sch_fq_codel.c +++ b/kernel/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> @@ -23,7 +23,6 @@ #include <linux/vmalloc.h> #include <net/netlink.h> #include <net/pkt_sched.h> -#include <net/flow_keys.h> #include <net/codel.h> /* Fair Queue CoDel. @@ -68,15 +67,9 @@ struct fq_codel_sched_data { }; static unsigned int fq_codel_hash(const struct fq_codel_sched_data *q, - const struct sk_buff *skb) + struct sk_buff *skb) { - struct flow_keys keys; - unsigned int hash; - - skb_flow_dissect(skb, &keys); - hash = jhash_3words((__force u32)keys.dst, - (__force u32)keys.src ^ keys.ip_proto, - (__force u32)keys.ports, q->perturbation); + u32 hash = skb_get_hash_perturb(skb, q->perturbation); return reciprocal_scale(hash, q->flows_cnt); } @@ -99,7 +92,7 @@ static unsigned int fq_codel_classify(struct sk_buff *skb, struct Qdisc *sch, return fq_codel_hash(q, skb) + 1; *qerr = NET_XMIT_SUCCESS | __NET_XMIT_BYPASS; - result = tc_classify(skb, filter, &res); + result = tc_classify(skb, filter, &res, false); if (result >= 0) { #ifdef CONFIG_NET_CLS_ACT switch (result) { @@ -170,6 +163,15 @@ static unsigned int fq_codel_drop(struct Qdisc *sch) return idx; } +static unsigned int fq_codel_qdisc_drop(struct Qdisc *sch) +{ + unsigned int prev_backlog; + + prev_backlog = sch->qstats.backlog; + fq_codel_drop(sch); + return prev_backlog - sch->qstats.backlog; +} + static int fq_codel_enqueue(struct sk_buff *skb, struct Qdisc *sch) { struct fq_codel_sched_data *q = qdisc_priv(sch); @@ -286,10 +288,26 @@ begin: static void fq_codel_reset(struct Qdisc *sch) { - struct sk_buff *skb; + struct fq_codel_sched_data *q = qdisc_priv(sch); + int i; - while ((skb = fq_codel_dequeue(sch)) != NULL) - kfree_skb(skb); + INIT_LIST_HEAD(&q->new_flows); + INIT_LIST_HEAD(&q->old_flows); + for (i = 0; i < q->flows_cnt; i++) { + struct fq_codel_flow *flow = q->flows + i; + + while (flow->head) { + struct sk_buff *skb = dequeue_head(flow); + + qdisc_qstats_backlog_dec(sch, skb); + kfree_skb(skb); + } + + INIT_LIST_HEAD(&flow->flowchain); + codel_vars_init(&flow->cvars); + } + memset(q->backlogs, 0, q->flows_cnt * sizeof(u32)); + sch->q.qlen = 0; } static const struct nla_policy fq_codel_policy[TCA_FQ_CODEL_MAX + 1] = { @@ -299,6 +317,7 @@ 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) @@ -329,6 +348,12 @@ 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]); @@ -448,6 +473,11 @@ 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: @@ -466,6 +496,7 @@ 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++; @@ -598,7 +629,7 @@ static struct Qdisc_ops fq_codel_qdisc_ops __read_mostly = { .enqueue = fq_codel_enqueue, .dequeue = fq_codel_dequeue, .peek = qdisc_peek_dequeued, - .drop = fq_codel_drop, + .drop = fq_codel_qdisc_drop, .init = fq_codel_init, .reset = fq_codel_reset, .destroy = fq_codel_destroy, |