APPLIED: [SRU][J:linux-bluefield][PATCH v1 0/1] UBUNTU: SAUCE: mlxbf-gige: Fix intermittent no ip issue

[Bartlomiej Zolnierkiewicz]

Applied to jammy:linux-bluefield/master-next. Thanks.

--
Best regards,
Bartlomiej

On Wed, Mar 1, 2023 at 12:05 AM Asmaa Mnebhi <asmaa at nvidia.com> wrote:
>
> BugLink: https://bugs.launchpad.net/bugs/2008833
>
> SRU Justification:
>
> [Impact]
>
> Although the link is up, and the PHY interrupt is cleared, there is no ip assigned.
> Nothing is being transmitted, and nothing is received. The RX error count keeps on
> increasing (check ifconfig oob_net0). After several minutes, the RX error count
> stagnates and the oob finally gets an ip and is pingable.
>
> [Fix]
>
> The issue is in the mlxbf_gige_rx_init function. As soon as the RX DMA is enabled,
> the RX CI reaches the max 128, it becomes equal to RX PI. And RX CI doesn't decrease
> since the code hasn't ran phy_start yet. The solution is to move the rx init after
> phy_start. This fix applies to both 5.4 and 5.15.
>
> [Test Case]
>
> * Check if the gige driver is loaded
> * Check that the oob_net0 interface is up and pingable from an external host
> * Do at ~1000 resets and powercycles and check the oon_net0 interface again
>
> [Regression Potential]
>
> * No known regressions.
>
> Asmaa Mnebhi (1):
>   UBUNTU: SAUCE: mlxbf-gige: Fix intermittent no ip issue
>
>  .../ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c | 14 +++++++-------
>  .../ethernet/mellanox/mlxbf_gige/mlxbf_gige_rx.c   |  6 +++---
>  2 files changed, 10 insertions(+), 10 deletions(-)
>