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Date: Sun, 20 Jul 2008 02:35:01 +0300
From: Jussi Kivilinna <jussi.kivilinna@...et.fi>
To: Patrick McHardy <kaber@...sh.net>
Cc: netdev@...r.kernel.org
Subject: [PATCH v2 1/3] net_sched: Add qdisc_enqueue wrapper
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@...et.fi>
---
include/net/sch_generic.h | 10 ++++++++++
net/core/dev.c | 4 ++--
net/mac80211/wme.c | 2 +-
net/sched/sch_atm.c | 2 +-
net/sched/sch_cbq.c | 5 +++--
net/sched/sch_dsmark.c | 2 +-
net/sched/sch_hfsc.c | 2 +-
net/sched/sch_htb.c | 3 +--
net/sched/sch_netem.c | 20 ++++++++++++--------
net/sched/sch_prio.c | 3 ++-
net/sched/sch_red.c | 2 +-
net/sched/sch_tbf.c | 3 ++-
12 files changed, 37 insertions(+), 21 deletions(-)
diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
index 8a44386..f396dff 100644
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h
@@ -306,6 +306,16 @@ static inline bool qdisc_tx_is_noop(const struct net_device *dev)
return true;
}
+static inline int qdisc_enqueue(struct sk_buff *skb, struct Qdisc *sch)
+{
+ return sch->enqueue(skb, sch);
+}
+
+static inline int qdisc_enqueue_root(struct sk_buff *skb, struct Qdisc *sch)
+{
+ return qdisc_enqueue(skb, sch);
+}
+
static inline int __qdisc_enqueue_tail(struct sk_buff *skb, struct Qdisc *sch,
struct sk_buff_head *list)
{
diff --git a/net/core/dev.c b/net/core/dev.c
index 065b981..2eed17b 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1781,7 +1781,7 @@ gso:
spin_lock(root_lock);
- rc = q->enqueue(skb, q);
+ rc = qdisc_enqueue_root(skb, q);
qdisc_run(q);
spin_unlock(root_lock);
@@ -2083,7 +2083,7 @@ static int ing_filter(struct sk_buff *skb)
q = rxq->qdisc;
if (q) {
spin_lock(qdisc_lock(q));
- result = q->enqueue(skb, q);
+ result = qdisc_enqueue_root(skb, q);
spin_unlock(qdisc_lock(q));
}
diff --git a/net/mac80211/wme.c b/net/mac80211/wme.c
index 6e8099e..07edda0 100644
--- a/net/mac80211/wme.c
+++ b/net/mac80211/wme.c
@@ -289,7 +289,7 @@ void ieee80211_requeue(struct ieee80211_local *local, int queue)
root_lock = qdisc_root_lock(qdisc);
spin_lock(root_lock);
- qdisc->enqueue(skb, qdisc);
+ qdisc_enqueue_root(skb, qdisc);
spin_unlock(root_lock);
}
diff --git a/net/sched/sch_atm.c b/net/sched/sch_atm.c
index 0de757e..68ed35e 100644
--- a/net/sched/sch_atm.c
+++ b/net/sched/sch_atm.c
@@ -429,7 +429,7 @@ static int atm_tc_enqueue(struct sk_buff *skb, struct Qdisc *sch)
#endif
}
- ret = flow->q->enqueue(skb, flow->q);
+ ret = qdisc_enqueue(skb, flow->q);
if (ret != 0) {
drop: __maybe_unused
sch->qstats.drops++;
diff --git a/net/sched/sch_cbq.c b/net/sched/sch_cbq.c
index a3953bb..1afe3ee 100644
--- a/net/sched/sch_cbq.c
+++ b/net/sched/sch_cbq.c
@@ -387,7 +387,8 @@ cbq_enqueue(struct sk_buff *skb, struct Qdisc *sch)
#ifdef CONFIG_NET_CLS_ACT
cl->q->__parent = sch;
#endif
- if ((ret = cl->q->enqueue(skb, cl->q)) == NET_XMIT_SUCCESS) {
+ ret = qdisc_enqueue(skb, cl->q);
+ if (ret == NET_XMIT_SUCCESS) {
sch->q.qlen++;
sch->bstats.packets++;
sch->bstats.bytes+=len;
@@ -671,7 +672,7 @@ static int cbq_reshape_fail(struct sk_buff *skb, struct Qdisc *child)
q->rx_class = cl;
cl->q->__parent = sch;
- if (cl->q->enqueue(skb, cl->q) == 0) {
+ if (qdisc_enqueue(skb, cl->q) == 0) {
sch->q.qlen++;
sch->bstats.packets++;
sch->bstats.bytes+=len;
diff --git a/net/sched/sch_dsmark.c b/net/sched/sch_dsmark.c
index 3aafbd1..44d347e 100644
--- a/net/sched/sch_dsmark.c
+++ b/net/sched/sch_dsmark.c
@@ -252,7 +252,7 @@ static int dsmark_enqueue(struct sk_buff *skb, struct Qdisc *sch)
}
}
- err = p->q->enqueue(skb, p->q);
+ err = qdisc_enqueue(skb, p->q);
if (err != NET_XMIT_SUCCESS) {
sch->qstats.drops++;
return err;
diff --git a/net/sched/sch_hfsc.c b/net/sched/sch_hfsc.c
index 5090708..fd61ed6 100644
--- a/net/sched/sch_hfsc.c
+++ b/net/sched/sch_hfsc.c
@@ -1586,7 +1586,7 @@ hfsc_enqueue(struct sk_buff *skb, struct Qdisc *sch)
}
len = skb->len;
- err = cl->qdisc->enqueue(skb, cl->qdisc);
+ err = qdisc_enqueue(skb, cl->qdisc);
if (unlikely(err != NET_XMIT_SUCCESS)) {
cl->qstats.drops++;
sch->qstats.drops++;
diff --git a/net/sched/sch_htb.c b/net/sched/sch_htb.c
index ee48457..72b5a94 100644
--- a/net/sched/sch_htb.c
+++ b/net/sched/sch_htb.c
@@ -572,8 +572,7 @@ static int htb_enqueue(struct sk_buff *skb, struct Qdisc *sch)
kfree_skb(skb);
return ret;
#endif
- } else if (cl->un.leaf.q->enqueue(skb, cl->un.leaf.q) !=
- NET_XMIT_SUCCESS) {
+ } else if (qdisc_enqueue(skb, cl->un.leaf.q) != NET_XMIT_SUCCESS) {
sch->qstats.drops++;
cl->qstats.drops++;
return NET_XMIT_DROP;
diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c
index c5ea40c..13c4821 100644
--- a/net/sched/sch_netem.c
+++ b/net/sched/sch_netem.c
@@ -82,6 +82,12 @@ struct netem_skb_cb {
psched_time_t time_to_send;
};
+static inline struct netem_skb_cb *netem_skb_cb(struct sk_buff *skb)
+{
+ BUILD_BUG_ON(sizeof(skb->cb) < sizeof(struct netem_skb_cb));
+ return (struct netem_skb_cb *)skb->cb;
+}
+
/* init_crandom - initialize correlated random number generator
* Use entropy source for initial seed.
*/
@@ -184,7 +190,7 @@ static int netem_enqueue(struct sk_buff *skb, struct Qdisc *sch)
u32 dupsave = q->duplicate; /* prevent duplicating a dup... */
q->duplicate = 0;
- rootq->enqueue(skb2, rootq);
+ qdisc_enqueue_root(skb2, rootq);
q->duplicate = dupsave;
}
@@ -205,7 +211,7 @@ static int netem_enqueue(struct sk_buff *skb, struct Qdisc *sch)
skb->data[net_random() % skb_headlen(skb)] ^= 1<<(net_random() % 8);
}
- cb = (struct netem_skb_cb *)skb->cb;
+ cb = netem_skb_cb(skb);
if (q->gap == 0 /* not doing reordering */
|| q->counter < q->gap /* inside last reordering gap */
|| q->reorder < get_crandom(&q->reorder_cor)) {
@@ -218,7 +224,7 @@ static int netem_enqueue(struct sk_buff *skb, struct Qdisc *sch)
now = psched_get_time();
cb->time_to_send = now + delay;
++q->counter;
- ret = q->qdisc->enqueue(skb, q->qdisc);
+ ret = qdisc_enqueue(skb, q->qdisc);
} else {
/*
* Do re-ordering by putting one out of N packets at the front
@@ -277,8 +283,7 @@ static struct sk_buff *netem_dequeue(struct Qdisc *sch)
skb = q->qdisc->dequeue(q->qdisc);
if (skb) {
- const struct netem_skb_cb *cb
- = (const struct netem_skb_cb *)skb->cb;
+ const struct netem_skb_cb *cb = netem_skb_cb(skb);
psched_time_t now = psched_get_time();
/* if more time remaining? */
@@ -457,7 +462,7 @@ static int tfifo_enqueue(struct sk_buff *nskb, struct Qdisc *sch)
{
struct fifo_sched_data *q = qdisc_priv(sch);
struct sk_buff_head *list = &sch->q;
- psched_time_t tnext = ((struct netem_skb_cb *)nskb->cb)->time_to_send;
+ psched_time_t tnext = netem_skb_cb(nskb)->time_to_send;
struct sk_buff *skb;
if (likely(skb_queue_len(list) < q->limit)) {
@@ -468,8 +473,7 @@ static int tfifo_enqueue(struct sk_buff *nskb, struct Qdisc *sch)
}
skb_queue_reverse_walk(list, skb) {
- const struct netem_skb_cb *cb
- = (const struct netem_skb_cb *)skb->cb;
+ const struct netem_skb_cb *cb = netem_skb_cb(skb);
if (tnext >= cb->time_to_send)
break;
diff --git a/net/sched/sch_prio.c b/net/sched/sch_prio.c
index 536ca47..d29c2f8 100644
--- a/net/sched/sch_prio.c
+++ b/net/sched/sch_prio.c
@@ -81,7 +81,8 @@ prio_enqueue(struct sk_buff *skb, struct Qdisc *sch)
}
#endif
- if ((ret = qdisc->enqueue(skb, qdisc)) == NET_XMIT_SUCCESS) {
+ ret = qdisc_enqueue(skb, qdisc);
+ if (ret == NET_XMIT_SUCCESS) {
sch->bstats.bytes += skb->len;
sch->bstats.packets++;
sch->q.qlen++;
diff --git a/net/sched/sch_red.c b/net/sched/sch_red.c
index 77098ac..b48a391 100644
--- a/net/sched/sch_red.c
+++ b/net/sched/sch_red.c
@@ -92,7 +92,7 @@ static int red_enqueue(struct sk_buff *skb, struct Qdisc* sch)
break;
}
- ret = child->enqueue(skb, child);
+ ret = qdisc_enqueue(skb, child);
if (likely(ret == NET_XMIT_SUCCESS)) {
sch->bstats.bytes += skb->len;
sch->bstats.packets++;
diff --git a/net/sched/sch_tbf.c b/net/sched/sch_tbf.c
index 444c227..7d705b8 100644
--- a/net/sched/sch_tbf.c
+++ b/net/sched/sch_tbf.c
@@ -133,7 +133,8 @@ static int tbf_enqueue(struct sk_buff *skb, struct Qdisc* sch)
return NET_XMIT_DROP;
}
- if ((ret = q->qdisc->enqueue(skb, q->qdisc)) != 0) {
+ ret = qdisc_enqueue(skb, q->qdisc);
+ if (ret != 0) {
sch->qstats.drops++;
return ret;
}
--
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