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RDMA/mlx5: Block delay drop to unprivileged users 

commit ba80013fba upstream.

It has been discovered that this feature can globally block the RX port,
so it should be allowed for highly privileged users only.

Fixes: 03404e8ae652("IB/mlx5: Add support to dropless RQ")
Link: https://lore.kernel.org/r/20200322124906.1173790-1-leon@kernel.org
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5.4-rM2-2.2.x-imx-squashed
Maor Gottlieb 2020-03-22 14:49:06 +02:00 committed by Greg Kroah-Hartman
parent 1babd2c979
commit 1b92d81d4c
1 changed files with 4 additions and 0 deletions
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4
drivers/infiniband/hw/mlx5/qp.c
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@ -6132,6 +6132,10 @@ struct ib_wq *mlx5_ib_create_wq(struct ib_pd *pd,
if (udata->outlen && udata->outlen < min_resp_len)
return ERR_PTR(-EINVAL);
if (!capable(CAP_SYS_RAWIO) &&
init_attr->create_flags & IB_WQ_FLAGS_DELAY_DROP)
return ERR_PTR(-EPERM);
dev = to_mdev(pd->device);
switch (init_attr->wq_type) {
case IB_WQT_RQ: