From: Maor Gottlieb Date: Sun, 22 Mar 2020 12:49:06 +0000 (+0200) Subject: RDMA/mlx5: Block delay drop to unprivileged users X-Git-Tag: v5.15~4281^2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ba80013fba656b9830ef45cd40a6a1e44707f47a;p=platform%2Fkernel%2Flinux-starfive.git 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: 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 Signed-off-by: Leon Romanovsky Signed-off-by: Jason Gunthorpe --- diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c index c296798..8fe149e 100644 --- a/drivers/infiniband/hw/mlx5/qp.c +++ b/drivers/infiniband/hw/mlx5/qp.c @@ -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: