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netdev: Create netdev_queue abstraction.

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A netdev_queue is an entity managed by a qdisc.

Currently there is one RX and one TX queue, and a netdev_queue merely
contains a backpointer to the net_device.

The Qdisc struct is augmented with a netdev_queue pointer as well.

Eventually the 'dev' Qdisc member will go away and we will have the
resulting hierarchy:

	net_device --> netdev_queue --> Qdisc

Also, qdisc_alloc() and qdisc_create_dflt() now take a netdev_queue
pointer argument.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2008-07-08 16:55:56 -07:00
parent e65d22e180
commit bb949fbd18
14 changed files with 74 additions and 29 deletions
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8
net/core/dev.c
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@ -4072,6 +4072,12 @@ static struct net_device_stats *internal_stats(struct net_device *dev)
return &dev->stats;
}
static void netdev_init_queues(struct net_device *dev)
{
dev->rx_queue.dev = dev;
dev->tx_queue.dev = dev;
}
/**
* alloc_netdev_mq - allocate network device
* @sizeof_priv: size of private data to allocate space for
@ -4124,6 +4130,8 @@ struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name,
dev->egress_subqueue_count = queue_count;
dev->gso_max_size = GSO_MAX_SIZE;
netdev_init_queues(dev);
dev->get_stats = internal_stats;
netpoll_netdev_init(dev);
setup(dev);