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Recent ConnextX-[45] HCA have enhanced IPoIB enabled which prevents the use of the connected mode.
Although not an issue in a fully compatible setup, it can be an issue in a mixed HW one.
Mellanox OFED uses a ipoib_enhanced flag on the ib_ipoib module to work around the issue.
This patch adds a similarly name flag to the mlx5_ib module to disable enhanced IPoIB for
all mlx5 HCA and allow users to pick datagram/connected the usual way.
Signed-off-by: Nicolas Morey-Chaisemartin <nmoreychaisemartin@xxxxxxxx>
- ---
drivers/infiniband/hw/mlx5/main.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index c2a5780cb394..779a35883494 100644
- --- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -78,6 +78,10 @@ MODULE_AUTHOR("Eli Cohen <eli@xxxxxxxxxxxx>");
MODULE_DESCRIPTION("Mellanox Connect-IB HCA IB driver");
MODULE_LICENSE("Dual BSD/GPL");
+static int ipoib_enhanced = 1;
+module_param(ipoib_enhanced, int, 0444);
+MODULE_PARM_DESC(ipoib_enhanced, "Enable IPoIB enhanced for capable devices (default = 1) (0-1)");
+
static char mlx5_version[] =
DRIVER_NAME ": Mellanox Connect-IB Infiniband driver v"
DRIVER_VERSION "\n";
@@ -6383,6 +6387,7 @@ static int mlx5_ib_stage_caps_init(struct mlx5_ib_dev *dev)
(1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW);
if (MLX5_CAP_GEN(mdev, ipoib_enhanced_offloads) &&
+ ipoib_enhanced &&
IS_ENABLED(CONFIG_MLX5_CORE_IPOIB))
ib_set_device_ops(&dev->ib_dev,
&mlx5_ib_dev_ipoib_enhanced_ops);
- --
2.21.0
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