spin_unlock_bh(&dev->xmit_lock);
}
+void netif_carrier_on(struct net_device *dev)
+{
+ if (test_and_clear_bit(__LINK_STATE_NOCARRIER, &dev->state))
+ linkwatch_fire_event(dev);
+ if (netif_running(dev))
+ __netdev_watchdog_up(dev);
+}
+
+void netif_carrier_off(struct net_device *dev)
+{
+ if (!test_and_set_bit(__LINK_STATE_NOCARRIER, &dev->state))
+ linkwatch_fire_event(dev);
+}
+
/* "NOOP" scheduler: the best scheduler, recommended for all interfaces
under all circumstances. It is difficult to invent anything faster or
cheaper.
*/
-static int
-noop_enqueue(struct sk_buff *skb, struct Qdisc * qdisc)
+static int noop_enqueue(struct sk_buff *skb, struct Qdisc * qdisc)
{
kfree_skb(skb);
return NET_XMIT_CN;
}
-static struct sk_buff *
-noop_dequeue(struct Qdisc * qdisc)
+static struct sk_buff *noop_dequeue(struct Qdisc * qdisc)
{
return NULL;
}
-static int
-noop_requeue(struct sk_buff *skb, struct Qdisc* qdisc)
+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);
+ 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 = {
- .next = NULL,
- .cl_ops = NULL,
.id = "noop",
.priv_size = 0,
.enqueue = noop_enqueue,
};
static struct Qdisc_ops noqueue_qdisc_ops = {
- .next = NULL,
- .cl_ops = NULL,
.id = "noqueue",
.priv_size = 0,
.enqueue = noop_enqueue,
generic prio+fifo combination.
*/
-static int
-pfifo_fast_enqueue(struct sk_buff *skb, struct Qdisc* qdisc)
+#define PFIFO_FAST_BANDS 3
+
+static inline struct sk_buff_head *prio2list(struct sk_buff *skb,
+ struct Qdisc *qdisc)
{
struct sk_buff_head *list = qdisc_priv(qdisc);
+ return list + prio2band[skb->priority & TC_PRIO_MAX];
+}
- list += prio2band[skb->priority&TC_PRIO_MAX];
+static int pfifo_fast_enqueue(struct sk_buff *skb, struct Qdisc* qdisc)
+{
+ struct sk_buff_head *list = prio2list(skb, qdisc);
if (skb_queue_len(list) < qdisc->dev->tx_queue_len) {
qdisc->q.qlen++;
return qdisc_drop(skb, qdisc);
}
-static struct sk_buff *
-pfifo_fast_dequeue(struct Qdisc* qdisc)
+static struct sk_buff *pfifo_fast_dequeue(struct Qdisc* qdisc)
{
int prio;
struct sk_buff_head *list = qdisc_priv(qdisc);
- for (prio = 0; prio < 3; prio++, list++) {
- struct sk_buff *skb = __qdisc_dequeue_head(qdisc, list);
- if (skb) {
+ for (prio = 0; prio < PFIFO_FAST_BANDS; prio++) {
+ if (!skb_queue_empty(list + prio)) {
qdisc->q.qlen--;
- return skb;
+ return __qdisc_dequeue_head(qdisc, list + prio);
}
}
+
return NULL;
}
-static int
-pfifo_fast_requeue(struct sk_buff *skb, struct Qdisc* qdisc)
+static int pfifo_fast_requeue(struct sk_buff *skb, struct Qdisc* qdisc)
{
- struct sk_buff_head *list = qdisc_priv(qdisc);
-
- list += prio2band[skb->priority&TC_PRIO_MAX];
-
qdisc->q.qlen++;
- return __qdisc_requeue(skb, qdisc, list);
+ return __qdisc_requeue(skb, qdisc, prio2list(skb, qdisc));
}
-static void
-pfifo_fast_reset(struct Qdisc* qdisc)
+static void pfifo_fast_reset(struct Qdisc* qdisc)
{
int prio;
struct sk_buff_head *list = qdisc_priv(qdisc);
- for (prio=0; prio < 3; prio++)
+ for (prio = 0; prio < PFIFO_FAST_BANDS; prio++)
__qdisc_reset_queue(qdisc, list + prio);
qdisc->qstats.backlog = 0;
static int pfifo_fast_dump(struct Qdisc *qdisc, struct sk_buff *skb)
{
- unsigned char *b = skb->tail;
- struct tc_prio_qopt opt;
+ struct tc_prio_qopt opt = { .bands = PFIFO_FAST_BANDS };
- opt.bands = 3;
memcpy(&opt.priomap, prio2band, TC_PRIO_MAX+1);
RTA_PUT(skb, TCA_OPTIONS, sizeof(opt), &opt);
return skb->len;
rtattr_failure:
- skb_trim(skb, b - skb->data);
return -1;
}
static int pfifo_fast_init(struct Qdisc *qdisc, struct rtattr *opt)
{
- int i;
+ int prio;
struct sk_buff_head *list = qdisc_priv(qdisc);
- for (i=0; i<3; i++)
- skb_queue_head_init(list+i);
+ for (prio = 0; prio < PFIFO_FAST_BANDS; prio++)
+ skb_queue_head_init(list + prio);
return 0;
}
static struct Qdisc_ops pfifo_fast_ops = {
- .next = NULL,
- .cl_ops = NULL,
.id = "pfifo_fast",
- .priv_size = 3 * sizeof(struct sk_buff_head),
+ .priv_size = PFIFO_FAST_BANDS * sizeof(struct sk_buff_head),
.enqueue = pfifo_fast_enqueue,
.dequeue = pfifo_fast_dequeue,
.requeue = pfifo_fast_requeue,
.owner = THIS_MODULE,
};
-struct Qdisc * qdisc_create_dflt(struct net_device *dev, struct Qdisc_ops *ops)
+struct Qdisc *qdisc_alloc(struct net_device *dev, struct Qdisc_ops *ops)
{
void *p;
struct Qdisc *sch;
- int size;
+ unsigned int size;
+ int err = -ENOBUFS;
/* ensure that the Qdisc and the private data are 32-byte aligned */
- size = ((sizeof(*sch) + QDISC_ALIGN_CONST) & ~QDISC_ALIGN_CONST);
- size += ops->priv_size + QDISC_ALIGN_CONST;
+ size = QDISC_ALIGN(sizeof(*sch));
+ size += ops->priv_size + (QDISC_ALIGNTO - 1);
p = kmalloc(size, GFP_KERNEL);
if (!p)
- return NULL;
+ goto errout;
memset(p, 0, size);
-
- sch = (struct Qdisc *)(((unsigned long)p + QDISC_ALIGN_CONST)
- & ~QDISC_ALIGN_CONST);
- sch->padded = (char *)sch - (char *)p;
+ sch = (struct Qdisc *) QDISC_ALIGN((unsigned long) p);
+ sch->padded = (char *) sch - (char *) p;
INIT_LIST_HEAD(&sch->list);
skb_queue_head_init(&sch->q);
dev_hold(dev);
sch->stats_lock = &dev->queue_lock;
atomic_set(&sch->refcnt, 1);
+
+ return sch;
+errout:
+ return ERR_PTR(-err);
+}
+
+struct Qdisc * qdisc_create_dflt(struct net_device *dev, struct Qdisc_ops *ops)
+{
+ struct Qdisc *sch;
+
+ sch = qdisc_alloc(dev, ops);
+ if (IS_ERR(sch))
+ goto errout;
+
if (!ops->init || ops->init(sch, NULL) == 0)
return sch;
- dev_put(dev);
- kfree(p);
+ qdisc_destroy(sch);
+errout:
return NULL;
}
}
EXPORT_SYMBOL(__netdev_watchdog_up);
+EXPORT_SYMBOL(netif_carrier_on);
+EXPORT_SYMBOL(netif_carrier_off);
EXPORT_SYMBOL(noop_qdisc);
EXPORT_SYMBOL(noop_qdisc_ops);
EXPORT_SYMBOL(qdisc_create_dflt);
+EXPORT_SYMBOL(qdisc_alloc);
EXPORT_SYMBOL(qdisc_destroy);
EXPORT_SYMBOL(qdisc_reset);
EXPORT_SYMBOL(qdisc_restart);
projects / linux-2.6 / blobdiff