RDMA/ionic: Embed counter driver data in rdma_counter allocation

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Commit 7e53b31acc ("RDMA/core: Create and destroy rdma_counter using
rdma_zalloc_drv_obj()") requires drivers implementing counter ops to
embed struct rdma_counter in a driver-specific struct, register its size
via INIT_RDMA_OBJ_SIZE, and provide a counter_init callback.

The ionic driver was merged without this adaptation, causing a NULL
pointer dereference in alloc_and_bind() since rdma_zalloc_drv_obj()
allocates zero bytes when size_rdma_counter is unset.

Consolidate struct ionic_counter into a new struct ionic_rdma_counter
that embeds struct rdma_counter, replace the xarray with a lightweight
ida for ID allocation, and add the required counter_init and
INIT_RDMA_OBJ_SIZE declarations.

Fixes: ea4c399642 ("RDMA/ionic: Implement device stats ops")
Cc: stable@vger.kernel.org # 6.18
Signed-off-by: Abhijit Gangurde <abhijit.gangurde@amd.com>
Link: https://patch.msgid.link/20260805053254.4023262-2-abhijit.gangurde@amd.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>

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This commit is contained in:

Abhijit Gangurde 2026-08-05 11:02:54 +05:30 • committed by Leon Romanovsky

parent 1d0f877d59

commit cf3ebd89e7

2 changed files with 51 additions and 55 deletions

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95

drivers/infiniband/hw/ionic/ionic_hw_stats.c

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11

drivers/infiniband/hw/ionic/ionic_ibdev.h

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