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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>
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1 changed files with 4 additions and 0 deletions
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@ -4896,6 +4896,10 @@ struct ib_wq *mlx5_ib_create_wq(struct ib_pd *pd,
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if (udata->outlen && udata->outlen < min_resp_len)
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return ERR_PTR(-EINVAL);
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if (!capable(CAP_SYS_RAWIO) &&
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init_attr->create_flags & IB_WQ_FLAGS_DELAY_DROP)
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return ERR_PTR(-EPERM);
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dev = to_mdev(pd->device);
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switch (init_attr->wq_type) {
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case IB_WQT_RQ:
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