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IB/mlx5: Verify that driver supports user flags

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Flags sent down from user might not be supported by
running driver.
This might lead to unwanted bugs.
To solve this, added macro to test for unsupported flags.

Signed-off-by: Yonatan Cohen <yonatanc@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Yonatan Cohen 2018-10-09 12:05:14 +03:00 committed by Doug Ledford
parent 5d6ff1babe
commit 2e43bb31b8
1 changed files with 14 additions and 0 deletions
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14
drivers/infiniband/hw/mlx5/qp.c
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@ -1728,6 +1728,11 @@ static void configure_requester_scat_cqe(struct mlx5_ib_dev *dev,
MLX5_SET(qpc, qpc, cs_req, MLX5_REQ_SCAT_DATA32_CQE);
}
static inline bool check_flags_mask(uint64_t input, uint64_t supported)
{
return (input & ~supported) == 0;
}
static int create_qp_common(struct mlx5_ib_dev *dev, struct ib_pd *pd,
struct ib_qp_init_attr *init_attr,
struct ib_udata *udata, struct mlx5_ib_qp *qp)
@ -1825,6 +1830,15 @@ static int create_qp_common(struct mlx5_ib_dev *dev, struct ib_pd *pd,
return -EFAULT;
}
if (!check_flags_mask(ucmd.flags,
MLX5_QP_FLAG_SIGNATURE |
MLX5_QP_FLAG_SCATTER_CQE |
MLX5_QP_FLAG_TUNNEL_OFFLOADS |
MLX5_QP_FLAG_BFREG_INDEX |
MLX5_QP_FLAG_TYPE_DCT |
MLX5_QP_FLAG_TYPE_DCI))
return -EINVAL;
err = get_qp_user_index(to_mucontext(pd->uobject->context),
&ucmd, udata->inlen, &uidx);
if (err)