From: Or Har-Toov <ohartoov@nvidia.com>
Raise IB_EVENT_DEVICE_SPEED_CHANGE whenever the speed of one of the
device's ports changes. Usually all ports of the device changes
together.
This ensures user applications and upper-layer software are immediately
notified when bandwidth changes, improving traffic management in dynamic
environments. This is especially useful for vports which are part of a
LAG configuration, to know if the effective speed of the LAG was
changed.
Signed-off-by: Or Har-Toov <ohartoov@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Edward Srouji <edwards@nvidia.com>
---
drivers/infiniband/hw/mlx5/main.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index 40284bbb45d6..bea42acbeaad 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -2838,6 +2838,14 @@ static int handle_port_change(struct mlx5_ib_dev *ibdev, struct mlx5_eqe *eqe,
case MLX5_PORT_CHANGE_SUBTYPE_ACTIVE:
case MLX5_PORT_CHANGE_SUBTYPE_DOWN:
case MLX5_PORT_CHANGE_SUBTYPE_INITIALIZED:
+ if (ibdev->ib_active) {
+ struct ib_event speed_event = {};
+
+ speed_event.device = &ibdev->ib_dev;
+ speed_event.event = IB_EVENT_DEVICE_SPEED_CHANGE;
+ ib_dispatch_event(&speed_event);
+ }
+
/* In RoCE, port up/down events are handled in
* mlx5_netdev_event().
*/
--
2.47.1