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RDMA/mlx5: Block delay drop to unprivileged users

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commit ba80013fba656b9830ef45cd40a6a1e44707f47a 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>
This commit is contained in:
Maor Gottlieb 2020-03-22 14:49:06 +02:00 committed by Greg Kroah-Hartman
parent 27993a6ac8
commit 1046035d3b
1 changed files with 4 additions and 0 deletions
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4
drivers/infiniband/hw/mlx5/qp.c
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@ -4896,6 +4896,10 @@ 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: