diff options
| author | Yang Yingliang <yangyingliang@huawei.com> | 2013-12-25 17:35:15 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-12-31 14:31:44 -0500 |
| commit | 6a031f67c83aa175aedd10d4ae64750415ab57b0 (patch) | |
| tree | b24d6647a8362ae3b814bb22b55a53c554be5a99 | |
| parent | 8cfd88d6d70735c47b17aef855b4c81dde83c85c (diff) | |
sch_netem: support of 64bit rates
Add a new attribute to support 64bit rates so that
tc can use them to break the 32bit limit.
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/uapi/linux/pkt_sched.h | 1 | ||||
| -rw-r--r-- | net/sched/sch_netem.c | 15 |
2 files changed, 14 insertions, 2 deletions
diff --git a/include/uapi/linux/pkt_sched.h b/include/uapi/linux/pkt_sched.h index fe1192056fd1..77eb331810b8 100644 --- a/include/uapi/linux/pkt_sched.h +++ b/include/uapi/linux/pkt_sched.h @@ -525,6 +525,7 @@ enum { TCA_NETEM_LOSS, TCA_NETEM_RATE, TCA_NETEM_ECN, + TCA_NETEM_RATE64, __TCA_NETEM_MAX, }; diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c index 9632a4e753b7..090a4e3ecd0d 100644 --- a/net/sched/sch_netem.c +++ b/net/sched/sch_netem.c @@ -88,7 +88,7 @@ struct netem_sched_data { u32 duplicate; u32 reorder; u32 corrupt; - u32 rate; + u64 rate; s32 packet_overhead; u32 cell_size; u32 cell_size_reciprocal; @@ -782,6 +782,7 @@ static const struct nla_policy netem_policy[TCA_NETEM_MAX + 1] = { [TCA_NETEM_RATE] = { .len = sizeof(struct tc_netem_rate) }, [TCA_NETEM_LOSS] = { .type = NLA_NESTED }, [TCA_NETEM_ECN] = { .type = NLA_U32 }, + [TCA_NETEM_RATE64] = { .type = NLA_U64 }, }; static int parse_attr(struct nlattr *tb[], int maxtype, struct nlattr *nla, @@ -852,6 +853,10 @@ static int netem_change(struct Qdisc *sch, struct nlattr *opt) if (tb[TCA_NETEM_RATE]) get_rate(sch, tb[TCA_NETEM_RATE]); + if (tb[TCA_NETEM_RATE64]) + q->rate = max_t(u64, q->rate, + nla_get_u64(tb[TCA_NETEM_RATE64])); + if (tb[TCA_NETEM_ECN]) q->ecn = nla_get_u32(tb[TCA_NETEM_ECN]); @@ -974,7 +979,13 @@ static int netem_dump(struct Qdisc *sch, struct sk_buff *skb) if (nla_put(skb, TCA_NETEM_CORRUPT, sizeof(corrupt), &corrupt)) goto nla_put_failure; - rate.rate = q->rate; + if (q->rate >= (1ULL << 32)) { + if (nla_put_u64(skb, TCA_NETEM_RATE64, q->rate)) + goto nla_put_failure; + rate.rate = ~0U; + } else { + rate.rate = q->rate; + } rate.packet_overhead = q->packet_overhead; rate.cell_size = q->cell_size; rate.cell_overhead = q->cell_overhead; |