Public bug reported:
SRU Justification
[Impact]
* Microsoft requested patch to improve RX buffer handling in MANA driver
(LP: #2121570), however the page_pool implementation in mainline 5.15
has an additional parameter in a check in page_pool_alloc_frag() which
causes MANA NIC to not be detected.
[Fix]
* Jammy: revert of the following patches:
- 827c33e: "net: mana: Improve mana_set_channels() in low mem conditions"
upstream
- 5b59c72: "net: mana: Use page pool fragments for RX buffers instead of full
pages to improve memory efficiency." from linux-next
[Test Plan]
* Compile tested
* Microsoft to test
[Regression potential]
* Changes are localized to MANA and are clean reverts, so low likelihood
of regression. Possible regressions could result in unexpected behavior
of MANA driver.
[Other info]
* SF#00422364
** Affects: linux-azure (Ubuntu)
Importance: Undecided
Status: New
** Affects: linux-azure (Ubuntu Jammy)
Importance: Undecided
Status: New
** Also affects: linux-azure (Ubuntu Jammy)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2131828
Title:
MANA patches from MSFT have broken MANA in v6 environments
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