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RDMA/irdma: Ensure iWarp QP queue memory is OS paged aligned

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commit 0a5ec366de upstream.

The SQ is shared for between kernel and used by storing the kernel page
pointer and passing that to a kmap_atomic().

This then requires that the alignment is PAGE_SIZE aligned.

Fix by adding an iWarp specific alignment check.

Fixes: e965ef0e7b ("RDMA/irdma: Split QP handler into irdma_reg_user_mr_type_qp")
Link: https://lore.kernel.org/r/20231129202143.1434-3-shiraz.saleem@intel.com
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mike Marciniszyn 2023-11-29 14:21:42 -06:00 committed by Greg Kroah-Hartman
parent e1c1bdaa38
commit 270325fb31
1 changed files with 7 additions and 0 deletions
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7
drivers/infiniband/hw/irdma/verbs.c
View file

@ -2845,6 +2845,13 @@ static struct ib_mr *irdma_reg_user_mr(struct ib_pd *pd, u64 start, u64 len,
switch (req.reg_type) {
case IRDMA_MEMREG_TYPE_QP:
/* iWarp: Catch page not starting on OS page boundary */
if (!rdma_protocol_roce(&iwdev->ibdev, 1) &&
ib_umem_offset(iwmr->region)) {
err = -EINVAL;
goto error;
}
total = req.sq_pages + req.rq_pages + shadow_pgcnt;
if (total > iwmr->page_cnt) {
err = -EINVAL;