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Message-Id: <20080818.013718.55137898.davem@davemloft.net>
Date: Mon, 18 Aug 2008 01:37:18 -0700 (PDT)
From: David Miller <davem@...emloft.net>
To: netdev@...r.kernel.org
CC: jarkao2@...il.com
Subject: [PATCH 9/9]: pkt_sched: Kill qdisc->ops->requeue().
pkt_sched: Kill qdisc->ops->requeue().
It is only used by the qdisc->ops->requeue implementations themselves.
Signed-off-by: David S. Miller <davem@...emloft.net>
---
include/net/sch_generic.h | 16 -----------
net/sched/sch_api.c | 7 -----
net/sched/sch_cbq.c | 35 ------------------------
net/sched/sch_dsmark.c | 21 --------------
net/sched/sch_fifo.c | 2 -
net/sched/sch_generic.c | 18 ------------
net/sched/sch_gred.c | 21 --------------
net/sched/sch_hfsc.c | 12 --------
net/sched/sch_htb.c | 42 ----------------------------
net/sched/sch_netem.c | 16 -----------
net/sched/sch_prio.c | 29 -------------------
net/sched/sch_red.c | 18 ------------
net/sched/sch_sfq.c | 66 ---------------------------------------------
net/sched/sch_tbf.c | 14 ---------
net/sched/sch_teql.c | 11 -------
15 files changed, 0 insertions(+), 328 deletions(-)
diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
index 6da6e0a..ca66429 100644
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h
@@ -110,7 +110,6 @@ struct Qdisc_ops
int (*enqueue)(struct sk_buff *, struct Qdisc *);
struct sk_buff * (*dequeue)(struct Qdisc *);
- int (*requeue)(struct sk_buff *, struct Qdisc *);
unsigned int (*drop)(struct Qdisc *);
int (*init)(struct Qdisc *, struct nlattr *arg);
@@ -426,21 +425,6 @@ static inline struct sk_buff *qdisc_dequeue_tail(struct Qdisc *sch)
return __qdisc_dequeue_tail(sch, &sch->q);
}
-static inline int __qdisc_requeue(struct sk_buff *skb, struct Qdisc *sch,
- struct sk_buff_head *list)
-{
- __skb_queue_head(list, skb);
- sch->qstats.backlog += qdisc_pkt_len(skb);
- sch->qstats.requeues++;
-
- return NET_XMIT_SUCCESS;
-}
-
-static inline int qdisc_requeue(struct sk_buff *skb, struct Qdisc *sch)
-{
- return __qdisc_requeue(skb, sch, &sch->q);
-}
-
static inline void __qdisc_reset_queue(struct Qdisc *sch,
struct sk_buff_head *list)
{
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index c8dc72e..e132f8d 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -96,11 +96,6 @@ static int tclass_notify(struct sk_buff *oskb, struct nlmsghdr *n,
Auxiliary routines:
- ---requeue
-
- requeues once dequeued packet. It is used for non-standard or
- just buggy devices, which can defer output even if netif_queue_stopped()=0.
-
---reset
returns qdisc to initial state: purge all buffers, clear all
@@ -146,8 +141,6 @@ int register_qdisc(struct Qdisc_ops *qops)
if (qops->enqueue == NULL)
qops->enqueue = noop_qdisc_ops.enqueue;
- if (qops->requeue == NULL)
- qops->requeue = noop_qdisc_ops.requeue;
if (qops->dequeue == NULL)
qops->dequeue = noop_qdisc_ops.dequeue;
diff --git a/net/sched/sch_cbq.c b/net/sched/sch_cbq.c
index 6d47aad..c63a0d9 100644
--- a/net/sched/sch_cbq.c
+++ b/net/sched/sch_cbq.c
@@ -405,40 +405,6 @@ cbq_enqueue(struct sk_buff *skb, struct Qdisc *sch)
return ret;
}
-static int
-cbq_requeue(struct sk_buff *skb, struct Qdisc *sch)
-{
- struct cbq_sched_data *q = qdisc_priv(sch);
- struct cbq_class *cl;
- int ret;
-
- if ((cl = q->tx_class) == NULL) {
- kfree_skb(skb);
- sch->qstats.drops++;
- return NET_XMIT_CN;
- }
- q->tx_class = NULL;
-
- cbq_mark_toplevel(q, cl);
-
-#ifdef CONFIG_NET_CLS_ACT
- q->rx_class = cl;
- cl->q->__parent = sch;
-#endif
- if ((ret = cl->q->ops->requeue(skb, cl->q)) == 0) {
- sch->q.qlen++;
- sch->qstats.requeues++;
- if (!cl->next_alive)
- cbq_activate_class(cl);
- return 0;
- }
- if (net_xmit_drop_count(ret)) {
- sch->qstats.drops++;
- cl->qstats.drops++;
- }
- return ret;
-}
-
/* Overlimit actions */
/* TC_CBQ_OVL_CLASSIC: (default) penalize leaf class by adding offtime */
@@ -2061,7 +2027,6 @@ static struct Qdisc_ops cbq_qdisc_ops __read_mostly = {
.priv_size = sizeof(struct cbq_sched_data),
.enqueue = cbq_enqueue,
.dequeue = cbq_dequeue,
- .requeue = cbq_requeue,
.drop = cbq_drop,
.init = cbq_init,
.reset = cbq_reset,
diff --git a/net/sched/sch_dsmark.c b/net/sched/sch_dsmark.c
index 58a762a..1e6e42b 100644
--- a/net/sched/sch_dsmark.c
+++ b/net/sched/sch_dsmark.c
@@ -313,26 +313,6 @@ static struct sk_buff *dsmark_dequeue(struct Qdisc *sch)
return skb;
}
-static int dsmark_requeue(struct sk_buff *skb, struct Qdisc *sch)
-{
- struct dsmark_qdisc_data *p = qdisc_priv(sch);
- int err;
-
- pr_debug("dsmark_requeue(skb %p,sch %p,[qdisc %p])\n", skb, sch, p);
-
- err = p->q->ops->requeue(skb, p->q);
- if (err != NET_XMIT_SUCCESS) {
- if (net_xmit_drop_count(err))
- sch->qstats.drops++;
- return err;
- }
-
- sch->q.qlen++;
- sch->qstats.requeues++;
-
- return NET_XMIT_SUCCESS;
-}
-
static unsigned int dsmark_drop(struct Qdisc *sch)
{
struct dsmark_qdisc_data *p = qdisc_priv(sch);
@@ -496,7 +476,6 @@ static struct Qdisc_ops dsmark_qdisc_ops __read_mostly = {
.priv_size = sizeof(struct dsmark_qdisc_data),
.enqueue = dsmark_enqueue,
.dequeue = dsmark_dequeue,
- .requeue = dsmark_requeue,
.drop = dsmark_drop,
.init = dsmark_init,
.reset = dsmark_reset,
diff --git a/net/sched/sch_fifo.c b/net/sched/sch_fifo.c
index 23d258b..3114508 100644
--- a/net/sched/sch_fifo.c
+++ b/net/sched/sch_fifo.c
@@ -83,7 +83,6 @@ struct Qdisc_ops pfifo_qdisc_ops __read_mostly = {
.priv_size = sizeof(struct fifo_sched_data),
.enqueue = pfifo_enqueue,
.dequeue = qdisc_dequeue_head,
- .requeue = qdisc_requeue,
.drop = qdisc_queue_drop,
.init = fifo_init,
.reset = qdisc_reset_queue,
@@ -98,7 +97,6 @@ struct Qdisc_ops bfifo_qdisc_ops __read_mostly = {
.priv_size = sizeof(struct fifo_sched_data),
.enqueue = bfifo_enqueue,
.dequeue = qdisc_dequeue_head,
- .requeue = qdisc_requeue,
.drop = qdisc_queue_drop,
.init = fifo_init,
.reset = qdisc_reset_queue,
diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
index 81e3dc4..3f503b9 100644
--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
@@ -285,21 +285,11 @@ static struct sk_buff *noop_dequeue(struct Qdisc * qdisc)
return NULL;
}
-static int noop_requeue(struct sk_buff *skb, struct Qdisc* qdisc)
-{
- if (net_ratelimit())
- printk(KERN_DEBUG "%s deferred output. It is buggy.\n",
- skb->dev->name);
- kfree_skb(skb);
- return NET_XMIT_CN;
-}
-
struct Qdisc_ops noop_qdisc_ops __read_mostly = {
.id = "noop",
.priv_size = 0,
.enqueue = noop_enqueue,
.dequeue = noop_dequeue,
- .requeue = noop_requeue,
.owner = THIS_MODULE,
};
@@ -324,7 +314,6 @@ static struct Qdisc_ops noqueue_qdisc_ops __read_mostly = {
.priv_size = 0,
.enqueue = noop_enqueue,
.dequeue = noop_dequeue,
- .requeue = noop_requeue,
.owner = THIS_MODULE,
};
@@ -388,12 +377,6 @@ static struct sk_buff *pfifo_fast_dequeue(struct Qdisc* qdisc)
return NULL;
}
-static int pfifo_fast_requeue(struct sk_buff *skb, struct Qdisc* qdisc)
-{
- qdisc->q.qlen++;
- return __qdisc_requeue(skb, qdisc, prio2list(skb, qdisc));
-}
-
static void pfifo_fast_reset(struct Qdisc* qdisc)
{
int prio;
@@ -434,7 +417,6 @@ static struct Qdisc_ops pfifo_fast_ops __read_mostly = {
.priv_size = PFIFO_FAST_BANDS * sizeof(struct sk_buff_head),
.enqueue = pfifo_fast_enqueue,
.dequeue = pfifo_fast_dequeue,
- .requeue = pfifo_fast_requeue,
.init = pfifo_fast_init,
.reset = pfifo_fast_reset,
.dump = pfifo_fast_dump,
diff --git a/net/sched/sch_gred.c b/net/sched/sch_gred.c
index c1ad6b8..8259796 100644
--- a/net/sched/sch_gred.c
+++ b/net/sched/sch_gred.c
@@ -240,26 +240,6 @@ congestion_drop:
return NET_XMIT_CN;
}
-static int gred_requeue(struct sk_buff *skb, struct Qdisc* sch)
-{
- struct gred_sched *t = qdisc_priv(sch);
- struct gred_sched_data *q;
- u16 dp = tc_index_to_dp(skb);
-
- if (dp >= t->DPs || (q = t->tab[dp]) == NULL) {
- if (net_ratelimit())
- printk(KERN_WARNING "GRED: Unable to relocate VQ 0x%x "
- "for requeue, screwing up backlog.\n",
- tc_index_to_dp(skb));
- } else {
- if (red_is_idling(&q->parms))
- red_end_of_idle_period(&q->parms);
- q->backlog += qdisc_pkt_len(skb);
- }
-
- return qdisc_requeue(skb, sch);
-}
-
static struct sk_buff *gred_dequeue(struct Qdisc* sch)
{
struct sk_buff *skb;
@@ -602,7 +582,6 @@ static struct Qdisc_ops gred_qdisc_ops __read_mostly = {
.priv_size = sizeof(struct gred_sched),
.enqueue = gred_enqueue,
.dequeue = gred_dequeue,
- .requeue = gred_requeue,
.drop = gred_drop,
.init = gred_init,
.reset = gred_reset,
diff --git a/net/sched/sch_hfsc.c b/net/sched/sch_hfsc.c
index bed4fd2..59c4ca3 100644
--- a/net/sched/sch_hfsc.c
+++ b/net/sched/sch_hfsc.c
@@ -1669,17 +1669,6 @@ hfsc_dequeue(struct Qdisc *sch)
return skb;
}
-static int
-hfsc_requeue(struct sk_buff *skb, struct Qdisc *sch)
-{
- struct hfsc_sched *q = qdisc_priv(sch);
-
- __skb_queue_head(&q->requeue, skb);
- sch->q.qlen++;
- sch->qstats.requeues++;
- return NET_XMIT_SUCCESS;
-}
-
static unsigned int
hfsc_drop(struct Qdisc *sch)
{
@@ -1730,7 +1719,6 @@ static struct Qdisc_ops hfsc_qdisc_ops __read_mostly = {
.dump = hfsc_dump_qdisc,
.enqueue = hfsc_enqueue,
.dequeue = hfsc_dequeue,
- .requeue = hfsc_requeue,
.drop = hfsc_drop,
.cl_ops = &hfsc_class_ops,
.priv_size = sizeof(struct hfsc_sched),
diff --git a/net/sched/sch_htb.c b/net/sched/sch_htb.c
index 021149f..40eb035 100644
--- a/net/sched/sch_htb.c
+++ b/net/sched/sch_htb.c
@@ -591,47 +591,6 @@ static int htb_enqueue(struct sk_buff *skb, struct Qdisc *sch)
return NET_XMIT_SUCCESS;
}
-/* TODO: requeuing packet charges it to policers again !! */
-static int htb_requeue(struct sk_buff *skb, struct Qdisc *sch)
-{
- int ret;
- struct htb_sched *q = qdisc_priv(sch);
- struct htb_class *cl = htb_classify(skb, sch, &ret);
- struct sk_buff *tskb;
-
- if (cl == HTB_DIRECT) {
- /* enqueue to helper queue */
- if (q->direct_queue.qlen < q->direct_qlen) {
- __skb_queue_head(&q->direct_queue, skb);
- } else {
- __skb_queue_head(&q->direct_queue, skb);
- tskb = __skb_dequeue_tail(&q->direct_queue);
- kfree_skb(tskb);
- sch->qstats.drops++;
- return NET_XMIT_CN;
- }
-#ifdef CONFIG_NET_CLS_ACT
- } else if (!cl) {
- if (ret & __NET_XMIT_BYPASS)
- sch->qstats.drops++;
- kfree_skb(skb);
- return ret;
-#endif
- } else if ((ret = cl->un.leaf.q->ops->requeue(skb, cl->un.leaf.q)) !=
- NET_XMIT_SUCCESS) {
- if (net_xmit_drop_count(ret)) {
- sch->qstats.drops++;
- cl->qstats.drops++;
- }
- return ret;
- } else
- htb_activate(q, cl);
-
- sch->q.qlen++;
- sch->qstats.requeues++;
- return NET_XMIT_SUCCESS;
-}
-
/**
* htb_charge_class - charges amount "bytes" to leaf and ancestors
*
@@ -1565,7 +1524,6 @@ static struct Qdisc_ops htb_qdisc_ops __read_mostly = {
.priv_size = sizeof(struct htb_sched),
.enqueue = htb_enqueue,
.dequeue = htb_dequeue,
- .requeue = htb_requeue,
.drop = htb_drop,
.init = htb_init,
.reset = htb_reset,
diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c
index 7e15c0b..15407e6 100644
--- a/net/sched/sch_netem.c
+++ b/net/sched/sch_netem.c
@@ -249,20 +249,6 @@ static int netem_enqueue(struct sk_buff *skb, struct Qdisc *sch)
return ret;
}
-/* Requeue packets but don't change time stamp */
-static int netem_requeue(struct sk_buff *skb, struct Qdisc *sch)
-{
- struct netem_sched_data *q = qdisc_priv(sch);
- int ret;
-
- if ((ret = q->qdisc->ops->requeue(skb, q->qdisc)) == 0) {
- sch->q.qlen++;
- sch->qstats.requeues++;
- }
-
- return ret;
-}
-
static unsigned int netem_drop(struct Qdisc* sch)
{
struct netem_sched_data *q = qdisc_priv(sch);
@@ -522,7 +508,6 @@ static struct Qdisc_ops tfifo_qdisc_ops __read_mostly = {
.priv_size = sizeof(struct fifo_sched_data),
.enqueue = tfifo_enqueue,
.dequeue = qdisc_dequeue_head,
- .requeue = qdisc_requeue,
.drop = qdisc_queue_drop,
.init = tfifo_init,
.reset = qdisc_reset_queue,
@@ -697,7 +682,6 @@ static struct Qdisc_ops netem_qdisc_ops __read_mostly = {
.priv_size = sizeof(struct netem_sched_data),
.enqueue = netem_enqueue,
.dequeue = netem_dequeue,
- .requeue = netem_requeue,
.drop = netem_drop,
.init = netem_init,
.reset = netem_reset,
diff --git a/net/sched/sch_prio.c b/net/sched/sch_prio.c
index 5128625..aad09ff 100644
--- a/net/sched/sch_prio.c
+++ b/net/sched/sch_prio.c
@@ -93,34 +93,6 @@ prio_enqueue(struct sk_buff *skb, struct Qdisc *sch)
return ret;
}
-
-static int
-prio_requeue(struct sk_buff *skb, struct Qdisc* sch)
-{
- struct Qdisc *qdisc;
- int ret;
-
- qdisc = prio_classify(skb, sch, &ret);
-#ifdef CONFIG_NET_CLS_ACT
- if (qdisc == NULL) {
- if (ret & __NET_XMIT_BYPASS)
- sch->qstats.drops++;
- kfree_skb(skb);
- return ret;
- }
-#endif
-
- if ((ret = qdisc->ops->requeue(skb, qdisc)) == NET_XMIT_SUCCESS) {
- sch->q.qlen++;
- sch->qstats.requeues++;
- return NET_XMIT_SUCCESS;
- }
- if (net_xmit_drop_count(ret))
- sch->qstats.drops++;
- return ret;
-}
-
-
static struct sk_buff *prio_dequeue(struct Qdisc* sch)
{
struct prio_sched_data *q = qdisc_priv(sch);
@@ -425,7 +397,6 @@ static struct Qdisc_ops prio_qdisc_ops __read_mostly = {
.priv_size = sizeof(struct prio_sched_data),
.enqueue = prio_enqueue,
.dequeue = prio_dequeue,
- .requeue = prio_requeue,
.drop = prio_drop,
.init = prio_init,
.reset = prio_reset,
diff --git a/net/sched/sch_red.c b/net/sched/sch_red.c
index 3709720..31a556d 100644
--- a/net/sched/sch_red.c
+++ b/net/sched/sch_red.c
@@ -108,23 +108,6 @@ congestion_drop:
return NET_XMIT_CN;
}
-static int red_requeue(struct sk_buff *skb, struct Qdisc* sch)
-{
- struct red_sched_data *q = qdisc_priv(sch);
- struct Qdisc *child = q->qdisc;
- int ret;
-
- if (red_is_idling(&q->parms))
- red_end_of_idle_period(&q->parms);
-
- ret = child->ops->requeue(skb, child);
- if (likely(ret == NET_XMIT_SUCCESS)) {
- sch->qstats.requeues++;
- sch->q.qlen++;
- }
- return ret;
-}
-
static struct sk_buff * red_dequeue(struct Qdisc* sch)
{
struct sk_buff *skb;
@@ -361,7 +344,6 @@ static struct Qdisc_ops red_qdisc_ops __read_mostly = {
.cl_ops = &red_class_ops,
.enqueue = red_enqueue,
.dequeue = red_dequeue,
- .requeue = red_requeue,
.drop = red_drop,
.init = red_init,
.reset = red_reset,
diff --git a/net/sched/sch_sfq.c b/net/sched/sch_sfq.c
index 6e041d1..b44f35b 100644
--- a/net/sched/sch_sfq.c
+++ b/net/sched/sch_sfq.c
@@ -329,71 +329,6 @@ sfq_enqueue(struct sk_buff *skb, struct Qdisc *sch)
return NET_XMIT_CN;
}
-static int
-sfq_requeue(struct sk_buff *skb, struct Qdisc *sch)
-{
- struct sfq_sched_data *q = qdisc_priv(sch);
- unsigned int hash;
- sfq_index x;
- int ret;
-
- hash = sfq_classify(skb, sch, &ret);
- if (hash == 0) {
- if (ret & __NET_XMIT_BYPASS)
- sch->qstats.drops++;
- kfree_skb(skb);
- return ret;
- }
- hash--;
-
- x = q->ht[hash];
- if (x == SFQ_DEPTH) {
- q->ht[hash] = x = q->dep[SFQ_DEPTH].next;
- q->hash[x] = hash;
- }
-
- sch->qstats.backlog += qdisc_pkt_len(skb);
- __skb_queue_head(&q->qs[x], skb);
- /* If selected queue has length q->limit+1, this means that
- * all another queues are empty and we do simple tail drop.
- * This packet is still requeued at head of queue, tail packet
- * is dropped.
- */
- if (q->qs[x].qlen > q->limit) {
- skb = q->qs[x].prev;
- __skb_unlink(skb, &q->qs[x]);
- sch->qstats.drops++;
- sch->qstats.backlog -= qdisc_pkt_len(skb);
- kfree_skb(skb);
- return NET_XMIT_CN;
- }
-
- sfq_inc(q, x);
- if (q->qs[x].qlen == 1) { /* The flow is new */
- if (q->tail == SFQ_DEPTH) { /* It is the first flow */
- q->tail = x;
- q->next[x] = x;
- q->allot[x] = q->quantum;
- } else {
- q->next[x] = q->next[q->tail];
- q->next[q->tail] = x;
- q->tail = x;
- }
- }
-
- if (++sch->q.qlen <= q->limit) {
- sch->qstats.requeues++;
- return 0;
- }
-
- sch->qstats.drops++;
- sfq_drop(sch);
- return NET_XMIT_CN;
-}
-
-
-
-
static struct sk_buff *
sfq_dequeue(struct Qdisc *sch)
{
@@ -624,7 +559,6 @@ static struct Qdisc_ops sfq_qdisc_ops __read_mostly = {
.priv_size = sizeof(struct sfq_sched_data),
.enqueue = sfq_enqueue,
.dequeue = sfq_dequeue,
- .requeue = sfq_requeue,
.drop = sfq_drop,
.init = sfq_init,
.reset = sfq_reset,
diff --git a/net/sched/sch_tbf.c b/net/sched/sch_tbf.c
index e98aeb9..708e1eb 100644
--- a/net/sched/sch_tbf.c
+++ b/net/sched/sch_tbf.c
@@ -139,19 +139,6 @@ static int tbf_enqueue(struct sk_buff *skb, struct Qdisc* sch)
return 0;
}
-static int tbf_requeue(struct sk_buff *skb, struct Qdisc* sch)
-{
- struct tbf_sched_data *q = qdisc_priv(sch);
- int ret;
-
- if ((ret = q->qdisc->ops->requeue(skb, q->qdisc)) == 0) {
- sch->q.qlen++;
- sch->qstats.requeues++;
- }
-
- return ret;
-}
-
static unsigned int tbf_drop(struct Qdisc* sch)
{
struct tbf_sched_data *q = qdisc_priv(sch);
@@ -464,7 +451,6 @@ static struct Qdisc_ops tbf_qdisc_ops __read_mostly = {
.priv_size = sizeof(struct tbf_sched_data),
.enqueue = tbf_enqueue,
.dequeue = tbf_dequeue,
- .requeue = tbf_requeue,
.drop = tbf_drop,
.init = tbf_init,
.reset = tbf_reset,
diff --git a/net/sched/sch_teql.c b/net/sched/sch_teql.c
index 2c35c67..9404991 100644
--- a/net/sched/sch_teql.c
+++ b/net/sched/sch_teql.c
@@ -93,16 +93,6 @@ teql_enqueue(struct sk_buff *skb, struct Qdisc* sch)
return NET_XMIT_DROP;
}
-static int
-teql_requeue(struct sk_buff *skb, struct Qdisc* sch)
-{
- struct teql_sched_data *q = qdisc_priv(sch);
-
- __skb_queue_head(&q->q, skb);
- sch->qstats.requeues++;
- return 0;
-}
-
static struct sk_buff *
teql_dequeue(struct Qdisc* sch)
{
@@ -433,7 +423,6 @@ static __init void teql_master_setup(struct net_device *dev)
ops->enqueue = teql_enqueue;
ops->dequeue = teql_dequeue;
- ops->requeue = teql_requeue;
ops->init = teql_qdisc_init;
ops->reset = teql_reset;
ops->destroy = teql_destroy;
--
1.5.6.5.GIT
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