net/mlx5: Fix a bug of releasing wrong chunks on > 4K page size systems

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On systems with page size larger than 4K, a fwp object has few 4K chunks.
Fix a bug in fwp free flow where the chunk address was dropped and
fwp->addr was used instead (first chunk address). This caused a wrong
update of fwp->bitmask which later can cause errors in re-alloc fwp
chunk flow.

In order to fix this it, re-factor the release flow:
- Free 4k: Releases a specific 4k chunk inside the fwp, defined by
  starting address.
- Free fwp: Unconditionally release the whole fwp and its resources.
Free addr will call free fwp if all chunks were released, in order to do
code sharing.

In addition, fix npages to count for all released chunks correctly.

Fixes: c6168161f6 ("net/mlx5: Add support for release all pages event")
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

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Eran Ben Elisha 2020-05-03 11:01:39 +03:00 • committed by Saeed Mahameed

parent 2726cd4a29

commit e7f860e210

1 changed files with 22 additions and 22 deletions

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drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c

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