netdev: Create netdev_queue abstraction.
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>
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index e009c6f..515fd25 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -448,6 +448,10 @@
# define napi_synchronize(n) barrier()
#endif
+struct netdev_queue {
+ struct net_device *dev;
+};
+
/*
* The DEVICE structure.
* Actually, this whole structure is a big mistake. It mixes I/O
@@ -624,6 +628,9 @@
unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */
+ struct netdev_queue rx_queue;
+ struct netdev_queue tx_queue;
+
/* ingress path synchronizer */
spinlock_t ingress_lock;
struct Qdisc *qdisc_ingress;