Commit ba80013f authored Mar 22, 2020 by Maor Gottlieb Committed by Jason Gunthorpe Mar 25, 2020

RDMA/mlx5: Block delay drop to unprivileged users

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

Fixes: 03404e8a("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>

parent 950bf4f1

drivers/infiniband/hw/mlx5/qp.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -6205,6 +6205,10 @@ 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:

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