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[Bug 1756414] Re: [Hyper-V] Improvements for UDP on SRIOV

 

** Also affects: linux-azure-edge (Ubuntu)
   Importance: Undecided
       Status: New

** Also affects: linux-azure (Ubuntu Bionic)
   Importance: Undecided
       Status: New

** Also affects: linux-azure-edge (Ubuntu Bionic)
   Importance: Undecided
       Status: New

** Also affects: linux-azure (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Also affects: linux-azure-edge (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** No longer affects: linux-azure (Ubuntu Xenial)

** No longer affects: linux-azure-edge (Ubuntu Bionic)

** Changed in: linux-azure (Ubuntu Bionic)
     Assignee: (unassigned) => Marcelo Cerri (mhcerri)

** Changed in: linux-azure-edge (Ubuntu Xenial)
     Assignee: (unassigned) => Marcelo Cerri (mhcerri)

** Changed in: linux-azure-edge (Ubuntu Xenial)
       Status: New => In Progress

** Changed in: linux-azure-edge (Ubuntu Xenial)
   Importance: Undecided => Critical

** Changed in: linux-azure (Ubuntu Bionic)
   Importance: Undecided => High

** Changed in: linux-azure-edge (Ubuntu Xenial)
   Importance: Critical => High

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https://bugs.launchpad.net/bugs/1756414

Title:
  [Hyper-V] Improvements for UDP on SRIOV

Status in linux-azure package in Ubuntu:
  New
Status in linux-azure-edge package in Ubuntu:
  New
Status in linux-azure-edge source package in Xenial:
  In Progress
Status in linux-azure source package in Bionic:
  New

Bug description:
  https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/?id=a7f0fb1bfb66ded5d556d6723d691b77a7146b6f

  hv_netvsc: minor fixes

  These are improvements to netvsc driver. They aren't functionality
  changes so not targeting net-next; and they are not show stopper
  bugs that need to go to stable either.

  v2
     - drop the irq flags patch, defer it to net-next
     - split the multicast filter flag patch out
     - change propogate rx mode patch to handle startup of vf

  Of these patches in the set is very important for fixing UDP
  performance on SRIOV after Meltdown:

  hv_netvsc: defer queue selection to VF
  When VF is used for accelerated networking it will likely have
  more queues (and different policy) than the synthetic NIC.
  This patch defers the queue policy to the VF so that all the
  queues can be used. This impacts workloads like local generate UDP.

  Signed-off-by: Stephen Hemminger <sthemmin@xxxxxxxxxxxxx>
  Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>

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