23 Dec, 2011

1 commit

• 7838f2ce3   mqprio: Avoid panic if no options are provided ... Browse Code »

  1

  Userspace may not provide TCA_OPTIONS, in fact tc currently does
  so not do so if no arguments are specified on the command line.
  Return EINVAL instead of panicing.

  Signed-off-by: Thomas Graf
  Signed-off-by: David S. Miller

  Thomas Graf

  2011-12-23 11:34:56 +0800  

01 Nov, 2011

1 commit

• 3a9a231d9   net: Fix files explicitly needing to include module.h ... Browse Code »

  With calls to modular infrastructure, these files really
  needs the full module.h header. Call it out so some of the
  cleanups of implicit and unrequired includes elsewhere can be
  cleaned up.

  Signed-off-by: Paul Gortmaker

  Paul Gortmaker

  2011-11-01 07:30:28 +0800  

24 Feb, 2011

1 commit

• ea18fd950   mqprio: cleanups ... Browse Code »

  * make qdisc_ops local
  * add sparse annotation about expected unlock/unlock in dump_class_stats
  * fix indentation

  Signed-off-by: Stephen Hemminger
  Signed-off-by: David S. Miller

  stephen hemminger

  2011-02-24 06:11:32 +0800  

15 Feb, 2011

1 commit

• ac7100ba9   sch_mqprio: Always set num_tc to 0 in mqprio_destroy() ... Browse Code »

  All the cleanup code in mqprio_destroy() is currently conditional on
  priv->qdiscs being non-null, but that condition should only apply to
  the per-queue qdisc cleanup. We should always set the number of
  traffic classes back to 0 here.

  Signed-off-by: Ben Hutchings

  Ben Hutchings

  2011-02-15 03:07:58 +0800  

27 Jan, 2011

1 commit

• 144ce879b   net_sched: sch_mqprio: dont leak kernel memory ... Browse Code »

  mqprio_dump() should make sure all fields of struct tc_mqprio_qopt are
  initialized.

  Signed-off-by: Eric Dumazet
  CC: John Fastabend
  Signed-off-by: David S. Miller

  Eric Dumazet

  2011-01-27 05:15:29 +0800  

22 Jan, 2011

1 commit

• 23624935e   net_sched: TCQ_F_CAN_BYPASS generalization ... Browse Code »

  Now qdisc stab is handled before TCQ_F_CAN_BYPASS test in
  __dev_xmit_skb(), we can generalize TCQ_F_CAN_BYPASS to other qdiscs
  than pfifo_fast : pfifo, bfifo, pfifo_head_drop and sfq

  SFQ is special because it can have external classifiers, and in these
  cases, we cannot bypass queue discipline (packet could be dropped by
  classifier) without admin asking it, or further changes.

  Its worth doing this, especially for SFQ, avoiding dirtying memory in
  case no packets are already waiting in queue.

  Signed-off-by: Eric Dumazet
  Signed-off-by: David S. Miller

  Eric Dumazet

  2011-01-22 08:26:09 +0800  

20 Jan, 2011

1 commit

• b8970f0bf   net_sched: implement a root container qdisc sch_mqprio ... Browse Code »

  This implements a mqprio queueing discipline that by default creates
  a pfifo_fast qdisc per tx queue and provides the needed configuration
  interface.

  Using the mqprio qdisc the number of tcs currently in use along
  with the range of queues alloted to each class can be configured. By
  default skbs are mapped to traffic classes using the skb priority.
  This mapping is configurable.

  Configurable parameters,

  struct tc_mqprio_qopt {
  __u8 num_tc;
  __u8 prio_tc_map[TC_BITMASK + 1];
  __u8 hw;
  __u16 count[TC_MAX_QUEUE];
  __u16 offset[TC_MAX_QUEUE];
  };

  Here the count/offset pairing give the queue alignment and the
  prio_tc_map gives the mapping from skb->priority to tc.

  The hw bit determines if the hardware should configure the count
  and offset values. If the hardware bit is set then the operation
  will fail if the hardware does not implement the ndo_setup_tc
  operation. This is to avoid undetermined states where the hardware
  may or may not control the queue mapping. Also minimal bounds
  checking is done on the count/offset to verify a queue does not
  exceed num_tx_queues and that queue ranges do not overlap. Otherwise
  it is left to user policy or hardware configuration to create
  useful mappings.

  It is expected that hardware QOS schemes can be implemented by
  creating appropriate mappings of queues in ndo_tc_setup().

  One expected use case is drivers will use the ndo_setup_tc to map
  queue ranges onto 802.1Q traffic classes. This provides a generic
  mechanism to map network traffic onto these traffic classes and
  removes the need for lower layer drivers to know specifics about
  traffic types.

  Signed-off-by: John Fastabend
  Signed-off-by: David S. Miller

  John Fastabend

  2011-01-20 15:31:11 +0800