diff mbox

[rdma-rc,05/12] IB/mlx5: Validate requested RQT size

Message ID 1477575407-20562-6-git-send-email-leon@kernel.org (mailing list archive)
State Accepted
Headers show

Commit Message

Leon Romanovsky Oct. 27, 2016, 1:36 p.m. UTC 
From: Maor Gottlieb <maorg@mellanox.com>

Validate that the requested size of RQT is supported by firmware.

Fixes: c5f9092936fe ('IB/mlx5: Add Receive Work Queue Indirection table operations')
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
---
 drivers/infiniband/hw/mlx5/qp.c | 8 ++++++++
 1 file changed, 8 insertions(+)
diff mbox

Patch

diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c
index 5bdf20c..047f7e4 100644
--- a/drivers/infiniband/hw/mlx5/qp.c
+++ b/drivers/infiniband/hw/mlx5/qp.c
@@ -4817,6 +4817,14 @@  struct ib_rwq_ind_table *mlx5_ib_create_rwq_ind_table(struct ib_device *device,
 				 udata->inlen))
 		return ERR_PTR(-EOPNOTSUPP);
 
+	if (init_attr->log_ind_tbl_size >
+	    MLX5_CAP_GEN(dev->mdev, log_max_rqt_size)) {
+		mlx5_ib_dbg(dev, "log_ind_tbl_size = %d is bigger than supported = %d\n",
+			    init_attr->log_ind_tbl_size,
+			    MLX5_CAP_GEN(dev->mdev, log_max_rqt_size));
+		return ERR_PTR(-EINVAL);
+	}
+
 	min_resp_len = offsetof(typeof(resp), reserved) + sizeof(resp.reserved);
 	if (udata->outlen && udata->outlen < min_resp_len)
 		return ERR_PTR(-EINVAL);