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Commit 1b92d81d authored by Maor Gottlieb's avatar Maor Gottlieb Committed by Greg Kroah-Hartman
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RDMA/mlx5: Block delay drop to unprivileged users 

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: 03404e8a("IB/mlx5: Add support to dropless RQ")
Link: https://lore.kernel.org/r/20200322124906.1173790-1-leon@kernel.org


Signed-off-by: default avatarMaor Gottlieb <maorg@mellanox.com>
Signed-off-by: default avatarLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@mellanox.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 1babd2c9

drivers/infiniband/hw/mlx5/qp.c

+4 −0
Original line number Diff line number Diff line
@@ -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: