[PATCH net v5 0/6] Fix a variety of TPA bugs

[Joe Damato]

Greetings:

I am sending this series as an extension to my v4 [1] which was just 1 patch.

Note that patch 5 of this series can now cause the device to fail closed if
memory is tight; bnxt_init_nic propagates an error that was previously
swallowed and fails closed instead of succeeding in a degraded state. If the
maintainers want the device to come up with a partially populated rx_tpa[],
then patch 5 can be dropped and this series can still be applied
and will otherwise work as intended.

This series addresses a variety of bugs orbiting the TPA code in the bnxt
driver that Sashiko (or Clashiko or whatever) pointed out and the series ends
with the patch from the v4 [1].

A lot of the noise generated by the AIs while reviewing my v4 are unrelated
bugs with different fixes tags that, IMHO, distract a bit from the crash at
boot that is currently occurring with Thor2 hardware on recent kernels.

That said, I've tried to wrangle this series together which I hope will solve
most of the important bugs the AIs are feeling something about.

I do not know what other rabbit holes the AIs will find when I submit this
series, but if there is some reasonable stop-gap that we can get applied to
fix the crashes on Thor2 (while I iterate on the rest of the bugs at the
pleasure of the AIs) that would be excellent.

I boot tested this on a Thor1 and a Thor2 machine and there were no crashes at
boot.

Thanks,
Joe

[1]: https://lore.kernel.org/all/20260828190900.1767611-1-joe@xxxxxxx/

Joe Damato (6):
  bnxt_en: Only restore LRO if the device supports TPA
  bnxt_en: Don't free the live ring's TPA state on queue restart failure
  bnxt_en: Propagate TPA buffer allocation failures in
    bnxt_queue_mem_alloc()
  bnxt_en: Handle buffer allocation failure in bnxt_rx_ring_reset()
  bnxt_en: Propagate RX ring init failures in bnxt_init_nic()
  bnxt_en: Bound SW TPA IDs to prevent crashes

 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 57 +++++++++++++++++------
 drivers/net/ethernet/broadcom/bnxt/bnxt.h |  2 +-
 2 files changed, 43 insertions(+), 16 deletions(-)


base-commit: 1d2929d0850fff683b8aff051275945e65f082c8
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2.53.0-Meta