From: Maher Sanalla <msanalla@xxxxxxxxxx>
Enhance visibility into IB device state transitions by adding log messages
to the kernel log (dmesg). Whenever an IB device changes state, a relevant
print will be printed, such as:
"mlx5_core 0000:08:00.0 mlx5_0: Port DOWN"
"mlx5_core 0000:08:00.0 rocep8s0f0: Port ACTIVE"
Signed-off-by: Maher Sanalla <msanalla@xxxxxxxxxx>
Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxx>
---
drivers/infiniband/core/cache.c | 5 +++++
include/rdma/ib_verbs.h | 17 +++++++++++++++++
2 files changed, 22 insertions(+)
diff --git a/drivers/infiniband/core/cache.c b/drivers/infiniband/core/cache.c
index f8413f8a9f26..a35a2f3c9ab1 100644
--- a/drivers/infiniband/core/cache.c
+++ b/drivers/infiniband/core/cache.c
@@ -1501,6 +1501,11 @@ ib_cache_update(struct ib_device *device, u32 port, bool update_gids,
device->port_data[port].cache.pkey = pkey_cache;
}
device->port_data[port].cache.lmc = tprops->lmc;
+
+ if (device->port_data[port].cache.port_state != tprops->state)
+ ibdev_info(device, "Port %s\n",
+ ib_port_state_to_str(tprops->state));
+
device->port_data[port].cache.port_state = tprops->state;
device->port_data[port].cache.subnet_prefix = tprops->subnet_prefix;
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 0ad104dae253..b59bf30de430 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -519,6 +519,23 @@ enum ib_port_state {
IB_PORT_ACTIVE_DEFER = 5
};
+static inline const char *__attribute_const__
+ib_port_state_to_str(enum ib_port_state state)
+{
+ const char * const states[] = {
+ [IB_PORT_NOP] = "NOP",
+ [IB_PORT_DOWN] = "DOWN",
+ [IB_PORT_INIT] = "INIT",
+ [IB_PORT_ARMED] = "ARMED",
+ [IB_PORT_ACTIVE] = "ACTIVE",
+ [IB_PORT_ACTIVE_DEFER] = "ACTIVE_DEFER",
+ };
+
+ if (state < ARRAY_SIZE(states))
+ return states[state];
+ return "UNKNOWN";
+}
+
enum ib_port_phys_state {
IB_PORT_PHYS_STATE_SLEEP = 1,
IB_PORT_PHYS_STATE_POLLING = 2,
--
2.47.1
