[SRU][N:linux-gcp/N:linux-gke/N:linux-gkeop][PATCH v2 0/7] IDPF: TX timeout and crash

[Ian Whitfield]

BugLink: https://bugs.launchpad.net/bugs/2093622

[Impact]
Google has requested a patchset to be backported to resolve an issue in
the IDPF module. The issue can lead to timeouts and potentially a system
crash.

[Fix]
Backport a patchset from linux upstream to all IDPF-enabled Google
kernels. This thread is for Noble, another thread was sent for Jammy
and Oracular each, because they require separate patchsets. Plucky has
already received these fixes through upstream updates. For more details
on the backport process, each commit message includes a note about any
manual patch edits that were needed.

[Test Plan]
Google provided an iperf3 stress test, which I performed on two bare
metal machines using the IDPF driver. There were no errors reported by
the kernel after running the stress test for 24+ hours.

[Regression Potential]
This is a large backport and affects several kernels. Because these
kernels have diverged from upstream, most of the patches did not apply
cleanly, which increases the chance of human error in the backport
process. Problems related to this fix could lead to further issues in
the Intel IDPF module, but there have been no changes to other drivers
or the core kernel.

v2: Resubmitted without patches that have already been applied since v1.
    The patchset was previously reverted for all kernels over regression
    concerns, and has been more thoroughly tested since. Google asked
    that two additional patches were included in v2:
    e4891e4687c8 ("idpf: split &idpf_queue into 4 strictly-typed queue structures")
    f01032a2ca09 ("idpf: fix memory leaks and crashes while performing a soft reset")
    which also led to the inclusion of an additional commit:
    c00d33f1fc79 ("idpf: make virtchnl2.h self-contained")
    to reduce merge conflicts.

Alexander Lobakin (3):
  idpf: make virtchnl2.h self-contained
  idpf: split &idpf_queue into 4 strictly-typed queue structures
  idpf: fix memory leaks and crashes while performing a soft reset

Joshua Hay (3):
  idpf: enable WB_ON_ITR
  idpf: add support for SW triggered interrupts
  idpf: trigger SW interrupt when exiting wb_on_itr mode

Pavan Kumar Linga (1):
  idpf: fix idpf_vc_core_init error path

 drivers/net/ethernet/intel/idpf/idpf.h        |   3 +-
 drivers/net/ethernet/intel/idpf/idpf_dev.c    |   5 +
 .../net/ethernet/intel/idpf/idpf_ethtool.c    | 125 +--
 drivers/net/ethernet/intel/idpf/idpf_lib.c    |  77 +-
 .../ethernet/intel/idpf/idpf_singleq_txrx.c   | 150 +--
 drivers/net/ethernet/intel/idpf/idpf_txrx.c   | 952 +++++++++++-------
 drivers/net/ethernet/intel/idpf/idpf_txrx.h   | 472 ++++++---
 drivers/net/ethernet/intel/idpf/idpf_vf_dev.c |   5 +
 .../net/ethernet/intel/idpf/idpf_virtchnl.c   |  74 +-
 drivers/net/ethernet/intel/idpf/virtchnl2.h   |   4 +-
 10 files changed, 1108 insertions(+), 759 deletions(-)

-- 
2.43.0