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| author | Hiroaki SHIMODA <shimoda.hiroaki@gmail.com> | 2014-03-02 17:30:26 +0900 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-03-03 15:43:47 -0500 |
| commit | a135e598c463baf9497b84e1e92f9a8f96d3521c (patch) | |
| tree | 4debda792d5839b458ad562553616ce73b9f860f /net/sched/sch_tbf.c | |
| parent | 677676cd584033a47974c3634c6c9235e14db1a4 (diff) | |
| download | linux-next-a135e598c463baf9497b84e1e92f9a8f96d3521c.tar.gz | |
sch_tbf: Remove holes in struct tbf_sched_data.
On x86_64 we have 3 holes in struct tbf_sched_data.
The member peak_present can be replaced with peak.rate_bytes_ps,
because peak.rate_bytes_ps is set only when peak is specified in
tbf_change(). tbf_peak_present() is introduced to test
peak.rate_bytes_ps.
The member max_size is moved to fill 32bit hole.
Signed-off-by: Hiroaki SHIMODA <shimoda.hiroaki@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/sch_tbf.c')
| -rw-r--r-- | net/sched/sch_tbf.c | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/net/sched/sch_tbf.c b/net/sched/sch_tbf.c index 1cb413fead89..0893161b0262 100644 --- a/net/sched/sch_tbf.c +++ b/net/sched/sch_tbf.c @@ -101,12 +101,11 @@ struct tbf_sched_data { /* Parameters */ u32 limit; /* Maximal length of backlog: bytes */ + u32 max_size; s64 buffer; /* Token bucket depth/rate: MUST BE >= MTU/B */ s64 mtu; - u32 max_size; struct psched_ratecfg rate; struct psched_ratecfg peak; - bool peak_present; /* Variables */ s64 tokens; /* Current number of B tokens */ @@ -222,6 +221,11 @@ static unsigned int tbf_drop(struct Qdisc *sch) return len; } +static bool tbf_peak_present(const struct tbf_sched_data *q) +{ + return q->peak.rate_bytes_ps; +} + static struct sk_buff *tbf_dequeue(struct Qdisc *sch) { struct tbf_sched_data *q = qdisc_priv(sch); @@ -238,7 +242,7 @@ static struct sk_buff *tbf_dequeue(struct Qdisc *sch) now = ktime_to_ns(ktime_get()); toks = min_t(s64, now - q->t_c, q->buffer); - if (q->peak_present) { + if (tbf_peak_present(q)) { ptoks = toks + q->ptokens; if (ptoks > q->mtu) ptoks = q->mtu; @@ -378,6 +382,8 @@ static int tbf_change(struct Qdisc *sch, struct nlattr *opt) } else { max_size = min_t(u64, max_size, psched_ns_t2l(&peak, mtu)); } + } else { + memset(&peak, 0, sizeof(peak)); } if (max_size < psched_mtu(qdisc_dev(sch))) @@ -410,12 +416,7 @@ static int tbf_change(struct Qdisc *sch, struct nlattr *opt) q->ptokens = q->mtu; memcpy(&q->rate, &rate, sizeof(struct psched_ratecfg)); - if (qopt->peakrate.rate) { - memcpy(&q->peak, &peak, sizeof(struct psched_ratecfg)); - q->peak_present = true; - } else { - q->peak_present = false; - } + memcpy(&q->peak, &peak, sizeof(struct psched_ratecfg)); sch_tree_unlock(sch); err = 0; @@ -458,7 +459,7 @@ static int tbf_dump(struct Qdisc *sch, struct sk_buff *skb) opt.limit = q->limit; psched_ratecfg_getrate(&opt.rate, &q->rate); - if (q->peak_present) + if (tbf_peak_present(q)) psched_ratecfg_getrate(&opt.peakrate, &q->peak); else memset(&opt.peakrate, 0, sizeof(opt.peakrate)); @@ -469,7 +470,7 @@ static int tbf_dump(struct Qdisc *sch, struct sk_buff *skb) 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 && + if (tbf_peak_present(q) && q->peak.rate_bytes_ps >= (1ULL << 32) && nla_put_u64(skb, TCA_TBF_PRATE64, q->peak.rate_bytes_ps)) goto nla_put_failure; |