RDMA/bnxt: Do not use ib_umem_page_count() or ib_umem_num_pages()

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ib_umem_page_count() returns the number of 4k entries required for a DMA
map, but bnxt_re already computes a variable page size. The correct API to
determine the size of the page table array is ib_umem_num_dma_blocks().

Fix the overallocation of the page array in fill_umem_pbl_tbl() when
working with larger page sizes by using the right function. Lightly
re-organize this function to make it clearer.

Replace the other calls to ib_umem_num_pages().

Fixes: d85582517e ("RDMA/bnxt_re: Use core helpers to get aligned DMA address")
Link: https://lore.kernel.org/r/11-v2-270386b7e60b+28f4-umem_1_jgg@nvidia.com
Acked-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

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This commit is contained in:

Jason Gunthorpe 2020-09-04 19:41:52 -03:00

parent 901bca71cd

commit 84e71b4d9b

1 changed files with 24 additions and 46 deletions

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drivers/infiniband/hw/bnxt_re/ib_verbs.c

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