Bob Pearson b4f3041f8b RDMA/rxe: Compute PSN windows correctly ...

[ Upstream commit bb3ab2979f ]

The code which limited the number of unacknowledged PSNs was incorrect.
The PSNs are limited to 24 bits and wrap back to zero from 0x00ffffff.
The test was computing a 32 bit value which wraps at 32 bits so that
qp->req.psn can appear smaller than the limit when it is actually larger.

Replace '>' test with psn_compare which is used for other PSN comparisons
and correctly handles the 24 bit size.

Fixes: 8700e3e7c4 ("Soft RoCE driver")
Link: https://lore.kernel.org/r/20201013170741.3590-1-rpearson@hpe.com
Signed-off-by: Bob Pearson <rpearson@hpe.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2023-05-16 09:56:44 +09:00

..

rdmavt

IB/rdmavt: Fix sizeof mismatch

2023-05-16 09:38:55 +09:00

rxe

RDMA/rxe: Compute PSN windows correctly

2023-05-16 09:56:44 +09:00

Makefile

Soft RoCE driver

2016-08-04 11:13:12 -04:00