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| author | Yang Yingliang <yangyingliang@huawei.com> | 2013-11-08 10:23:34 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-11-09 14:53:37 -0500 |
| commit | a33c4a2663c19ac01e557d6b78806271eec2a150 (patch) | |
| tree | dc5627e103416512e31b0fc628c836572b8f66f1 | |
| parent | 51f3773bdeecf6ec48647dbfea335be4e507da0b (diff) | |
| download | op-kernel-dev-a33c4a2663c19ac01e557d6b78806271eec2a150.zip op-kernel-dev-a33c4a2663c19ac01e557d6b78806271eec2a150.tar.gz | |
net_sched: tbf: support of 64bit rates
With psched_ratecfg_precompute(), tbf can deal with 64bit rates.
Add two new attributes so that tc can use them to break the 32bit
limit.
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Suggested-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/uapi/linux/pkt_sched.h | 2 | ||||
| -rw-r--r-- | net/sched/sch_tbf.c | 22 |
2 files changed, 20 insertions, 4 deletions
diff --git a/include/uapi/linux/pkt_sched.h b/include/uapi/linux/pkt_sched.h index f2624b5..307f293 100644 --- a/include/uapi/linux/pkt_sched.h +++ b/include/uapi/linux/pkt_sched.h @@ -171,6 +171,8 @@ enum { TCA_TBF_PARMS, TCA_TBF_RTAB, TCA_TBF_PTAB, + TCA_TBF_RATE64, + TCA_TBF_PRATE64, __TCA_TBF_MAX, }; diff --git a/net/sched/sch_tbf.c b/net/sched/sch_tbf.c index b057122..68f9859 100644 --- a/net/sched/sch_tbf.c +++ b/net/sched/sch_tbf.c @@ -266,20 +266,23 @@ static const struct nla_policy tbf_policy[TCA_TBF_MAX + 1] = { [TCA_TBF_PARMS] = { .len = sizeof(struct tc_tbf_qopt) }, [TCA_TBF_RTAB] = { .type = NLA_BINARY, .len = TC_RTAB_SIZE }, [TCA_TBF_PTAB] = { .type = NLA_BINARY, .len = TC_RTAB_SIZE }, + [TCA_TBF_RATE64] = { .type = NLA_U64 }, + [TCA_TBF_PRATE64] = { .type = NLA_U64 }, }; static int tbf_change(struct Qdisc *sch, struct nlattr *opt) { int err; struct tbf_sched_data *q = qdisc_priv(sch); - struct nlattr *tb[TCA_TBF_PTAB + 1]; + struct nlattr *tb[TCA_TBF_MAX + 1]; struct tc_tbf_qopt *qopt; struct qdisc_rate_table *rtab = NULL; struct qdisc_rate_table *ptab = NULL; struct Qdisc *child = NULL; int max_size, n; + u64 rate64 = 0, prate64 = 0; - err = nla_parse_nested(tb, TCA_TBF_PTAB, opt, tbf_policy); + err = nla_parse_nested(tb, TCA_TBF_MAX, opt, tbf_policy); if (err < 0) return err; @@ -341,9 +344,13 @@ static int tbf_change(struct Qdisc *sch, struct nlattr *opt) q->tokens = q->buffer; q->ptokens = q->mtu; - psched_ratecfg_precompute(&q->rate, &rtab->rate, 0); + if (tb[TCA_TBF_RATE64]) + rate64 = nla_get_u64(tb[TCA_TBF_RATE64]); + psched_ratecfg_precompute(&q->rate, &rtab->rate, rate64); if (ptab) { - psched_ratecfg_precompute(&q->peak, &ptab->rate, 0); + if (tb[TCA_TBF_PRATE64]) + prate64 = nla_get_u64(tb[TCA_TBF_PRATE64]); + psched_ratecfg_precompute(&q->peak, &ptab->rate, prate64); q->peak_present = true; } else { q->peak_present = false; @@ -402,6 +409,13 @@ static int tbf_dump(struct Qdisc *sch, struct sk_buff *skb) opt.buffer = PSCHED_NS2TICKS(q->buffer); if (nla_put(skb, TCA_TBF_PARMS, sizeof(opt), &opt)) goto nla_put_failure; + if (q->rate.rate_bytes_ps >= (1ULL << 32) && + nla_put_u64(skb, TCA_TBF_RATE64, q->rate.rate_bytes_ps)) + goto nla_put_failure; + if (q->peak_present && + q->peak.rate_bytes_ps >= (1ULL << 32) && + nla_put_u64(skb, TCA_TBF_PRATE64, q->peak.rate_bytes_ps)) + goto nla_put_failure; nla_nest_end(skb, nest); return skb->len; |
