diff options
| author |   José Pekkarinen <jose.pekkarinen@nokia.com> | 2016-04-11 10:41:07 +0300 |
|---|---|---|
| committer | José Pekkarinen <jose.pekkarinen@nokia.com> | 2016-04-13 08:17:18 +0300 |
| commit | e09b41010ba33a20a87472ee821fa407a5b8da36 (patch) | |
| tree | d10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/net/sched/sch_gred.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_gred.c')
| -rw-r--r-- | kernel/net/sched/sch_gred.c | 26 |
1 files changed, 22 insertions, 4 deletions
diff --git a/kernel/net/sched/sch_gred.c b/kernel/net/sched/sch_gred.c index 634529e0c..80105109f 100644 --- a/kernel/net/sched/sch_gred.c +++ b/kernel/net/sched/sch_gred.c @@ -165,7 +165,8 @@ static int gred_enqueue(struct sk_buff *skb, struct Qdisc *sch) * if no default DP has been configured. This * allows for DP flows to be left untouched. */ - if (skb_queue_len(&sch->q) < qdisc_dev(sch)->tx_queue_len) + if (likely(sch->qstats.backlog + qdisc_pkt_len(skb) <= + sch->limit)) return qdisc_enqueue_tail(skb, sch); else goto drop; @@ -397,7 +398,10 @@ static inline int gred_change_vq(struct Qdisc *sch, int dp, q->DP = dp; q->prio = prio; - q->limit = ctl->limit; + if (ctl->limit > sch->limit) + q->limit = sch->limit; + else + q->limit = ctl->limit; if (q->backlog == 0) red_end_of_idle_period(&q->vars); @@ -414,6 +418,7 @@ static const struct nla_policy gred_policy[TCA_GRED_MAX + 1] = { [TCA_GRED_STAB] = { .len = 256 }, [TCA_GRED_DPS] = { .len = sizeof(struct tc_gred_sopt) }, [TCA_GRED_MAX_P] = { .type = NLA_U32 }, + [TCA_GRED_LIMIT] = { .type = NLA_U32 }, }; static int gred_change(struct Qdisc *sch, struct nlattr *opt) @@ -433,11 +438,15 @@ static int gred_change(struct Qdisc *sch, struct nlattr *opt) if (err < 0) return err; - if (tb[TCA_GRED_PARMS] == NULL && tb[TCA_GRED_STAB] == NULL) + if (tb[TCA_GRED_PARMS] == NULL && tb[TCA_GRED_STAB] == NULL) { + if (tb[TCA_GRED_LIMIT] != NULL) + sch->limit = nla_get_u32(tb[TCA_GRED_LIMIT]); return gred_change_table_def(sch, opt); + } if (tb[TCA_GRED_PARMS] == NULL || - tb[TCA_GRED_STAB] == NULL) + tb[TCA_GRED_STAB] == NULL || + tb[TCA_GRED_LIMIT] != NULL) return -EINVAL; max_P = tb[TCA_GRED_MAX_P] ? nla_get_u32(tb[TCA_GRED_MAX_P]) : 0; @@ -501,6 +510,12 @@ static int gred_init(struct Qdisc *sch, struct nlattr *opt) if (tb[TCA_GRED_PARMS] || tb[TCA_GRED_STAB]) return -EINVAL; + if (tb[TCA_GRED_LIMIT]) + sch->limit = nla_get_u32(tb[TCA_GRED_LIMIT]); + else + sch->limit = qdisc_dev(sch)->tx_queue_len + * psched_mtu(qdisc_dev(sch)); + return gred_change_table_def(sch, tb[TCA_GRED_DPS]); } @@ -531,6 +546,9 @@ static int gred_dump(struct Qdisc *sch, struct sk_buff *skb) if (nla_put(skb, TCA_GRED_MAX_P, sizeof(max_p), max_p)) goto nla_put_failure; + if (nla_put_u32(skb, TCA_GRED_LIMIT, sch->limit)) + goto nla_put_failure; + parms = nla_nest_start(skb, TCA_GRED_PARMS); if (parms == NULL) goto nla_put_failure; |