[PATCH net 0/4] gve: Fixes for issues discovered via net selftests

[Harshitha Ramamurthy <hramamurthy@google.com>]

From: Pin-yen Lin <treapking@google.com>

This patch series addresses several issues in the gve driver. All four of these
fixes were uncovered by running the net selftests.

The series includes the following changes:

- Patch 1 adds NULL pointer checks for the per-queue statistics code to
  prevent crashes when the rings are queried while the link is down. This
  was discovered by the drivers/net/stats.py selftest.
- Patch 2 fixes an issue where interface stats would go backwards when the
  interface was brought down or its configuration was adjusted. This was
  also discovered by the drivers/net/stats.py selftest.
- Patch 3 ensures the driver falls back to the default minimum ring size if
  the corresponding device option values are exposed as 0. This prevents
  userspace from configuring unexpectedly small ring sizes. This was
  discovered by the drivers/net/ring_reconfig.py selftest.
- Patch 4 makes sure ethtool configuration modifications are done
  synchronously before returning to the userspace. This was discovered by
  the drivers/net/ping.py selftest.

Debarghya Kundu (2):
  gve: Add NULL pointer checks for per-queue statistics
  gve: Fix backward stats when interface goes down or configuration is
    adjusted

Pin-yen Lin (2):
  gve: Use default min ring size when device option values are 0
  gve: Make ethtool config changes synchronous

 drivers/net/ethernet/google/gve/gve.h        |   6 +
 drivers/net/ethernet/google/gve/gve_adminq.c |   4 +-
 drivers/net/ethernet/google/gve/gve_main.c   | 128 +++++++++++++------
 3 files changed, 100 insertions(+), 38 deletions(-)

-- 
2.54.0.rc0.605.g598a273b03-goog

base-commit: 2dddb34dd0d07b01fa770eca89480a4da4f13153
branch: gve-misc-fixes