[SRU][Q/P/O/N:linux-azure][PATCH 0/5] Backport of [hv_netvsc]Fix error "nvsp_rndis_pkt_complete error status: 2"

[John Cabaj]

BugLink: https://bugs.launchpad.net/bugs/2112423

SRU Justification

[ Impact ]

* Microsoft request to fix case of Hyper-V netvsc occasionally reporting "nvsp_rndis_pkt_complete error status: 2"

[ Fix ]

* Clean cherry-pick of the following patches from upstream:
* 804ba2c0351d: "Drivers: hv: Allow vmbus_sendpacket_mpb_desc() to create multiple ranges"
* be5b5669dec9: "hv_netvsc: Use vmbus_sendpacket_mpb_desc() to send VMBus messages"
* 5973b346abdb: "hv_netvsc: Preserve contiguous PFN grouping in the page buffer array"
* 0fa94bea1cc4: "hv_netvsc: Remove rmsg_pgcnt"
* f77c9d3ef510: "Drivers: hv: vmbus: Remove vmbus_sendpacket_pagebuffer()"

[ Test Plan ]

* Compile tested
* Microsoft to test further

[ Where problems could occur ]

* Changes largely isolated to Hyper-V. All changes are already upstream. Lone changes outside
of Hyper-V is a single line moving a variable initialization. Regression impact could be issues
within Hyper-V.

[ Other info ]

* SF#00411519

Michael Kelley (5):
  Drivers: hv: Allow vmbus_sendpacket_mpb_desc() to create multiple
    ranges
  hv_netvsc: Use vmbus_sendpacket_mpb_desc() to send VMBus messages
  hv_netvsc: Preserve contiguous PFN grouping in the page buffer array
  hv_netvsc: Remove rmsg_pgcnt
  Drivers: hv: vmbus: Remove vmbus_sendpacket_pagebuffer()

 drivers/hv/channel.c              | 65 ++-----------------------------
 drivers/net/hyperv/hyperv_net.h   | 13 ++++++-
 drivers/net/hyperv/netvsc.c       | 57 ++++++++++++++++++++++-----
 drivers/net/hyperv/netvsc_drv.c   | 62 +++++++----------------------
 drivers/net/hyperv/rndis_filter.c | 24 +++---------
 drivers/scsi/storvsc_drv.c        |  1 +
 include/linux/hyperv.h            |  7 ----
 7 files changed, 83 insertions(+), 146 deletions(-)

-- 
2.43.0