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  1. 18 7月, 2008 6 次提交
    • D
      pkt_sched: Add and use qdisc_root() and qdisc_root_lock(). · 7698b4fc
      由 David S. Miller 提交于 
      When code wants to lock the qdisc tree state, the logic
operation it's doing is locking the top-level qdisc that
sits of the root of the netdev_queue.

Add qdisc_root_lock() to represent this and convert the
easiest cases.

In order for this to work out in all cases, we have to
hook up the noop_qdisc to a dummy netdev_queue.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      7698b4fc
    • D
      pkt_sched: Make QDISC_RUNNING a qdisc state. · e2627c8c
      由 David S. Miller 提交于 
      Currently it is associated with a netdev_queue, but when we have
qdisc sharing that no longer makes any sense.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      e2627c8c
    • D
      pkt_sched: Move gso_skb into Qdisc. · d3b753db
      由 David S. Miller 提交于 
      We liberate any dangling gso_skb during qdisc destruction.

It really only matters for the root qdisc.  But when qdiscs
can be shared by multiple netdev_queue objects, we can't
have the gso_skb in the netdev_queue any more.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      d3b753db
    • D
      mac80211: Reimplement WME using ->select_queue(). · 51cb6db0
      由 David S. Miller 提交于 
      The only behavior change is that we do not drop packets under any
circumstances.  If that is absolutely needed, we could easily add it
back.

With cleanups and help from Johannes Berg.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      51cb6db0
    • D
      net: Use queue aware tests throughout. · fd2ea0a7
      由 David S. Miller 提交于 
      This effectively "flips the switch" by making the core networking
and multiqueue-aware drivers use the new TX multiqueue structures.

Non-multiqueue drivers need no changes.  The interfaces they use such
as netif_stop_queue() degenerate into an operation on TX queue zero.
So everything "just works" for them.

Code that really wants to do "X" to all TX queues now invokes a
routine that does so, such as netif_tx_wake_all_queues(),
netif_tx_stop_all_queues(), etc.

pktgen and netpoll required a little bit more surgery than the others.

In particular the pktgen changes, whilst functional, could be largely
improved.  The initial check in pktgen_xmit() will sometimes check the
wrong queue, which is mostly harmless.  The thing to do is probably to
invoke fill_packet() earlier.

The bulk of the netpoll changes is to make the code operate solely on
the TX queue indicated by by the SKB queue mapping.

Setting of the SKB queue mapping is entirely confined inside of
net/core/dev.c:dev_pick_tx().  If we end up needing any kind of
special semantics (drops, for example) it will be implemented here.

Finally, we now have a "real_num_tx_queues" which is where the driver
indicates how many TX queues are actually active.

With IGB changes from Jeff Kirsher.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      fd2ea0a7
    • D
      netdev: Allocate multiple queues for TX. · e8a0464c
      由 David S. Miller 提交于 
      alloc_netdev_mq() now allocates an array of netdev_queue
structures for TX, based upon the queue_count argument.

Furthermore, all accesses to the TX queues are now vectored
through the netdev_get_tx_queue() and netdev_for_each_tx_queue()
interfaces.  This makes it easy to grep the tree for all
things that want to get to a TX queue of a net device.

Problem spots which are not really multiqueue aware yet, and
only work with one queue, can easily be spotted by grepping
for all netdev_get_tx_queue() calls that pass in a zero index.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      e8a0464c
  3. 17 7月, 2008 17 次提交
  5. 15 7月, 2008 12 次提交
  7. 09 7月, 2008 5 次提交