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authorMaor Gottlieb <maorg@mellanox.com>2020-03-22 15:49:06 +0300
committerJason Gunthorpe <jgg@mellanox.com>2020-03-25 15:56:30 +0300
commitba80013fba656b9830ef45cd40a6a1e44707f47a (patch)
tree1807f3501ff1b1950fceaecf7789308042d203cd /drivers/infiniband
parent950bf4f17725556bbc773a5b71e88a6c14c9ff25 (diff)
downloadlinux-ba80013fba656b9830ef45cd40a6a1e44707f47a.tar.xz
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 <maorg@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r--drivers/infiniband/hw/mlx5/qp.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c
index c2967982f02c..8fe149e808af 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: