From: Maher Sanalla Date: Mon, 3 Feb 2025 12:48:04 +0000 (+0200) Subject: IB/cache: Add log messages for IB device state changes X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=5459f6523c1f1a053cdc6411a810061ee717219c;p=users%2Fjedix%2Flinux-maple.git IB/cache: Add log messages for IB device state changes 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: 1 Link DOWN" "mlx5_core 0000:08:00.0 rdmap8s0f0: Port: 2 Link ACTIVE" Signed-off-by: Maher Sanalla Link: https://patch.msgid.link/2d26ccbd669bad99089fa2aebb5cba4014fc4999.1738586601.git.leon@kernel.org Signed-off-by: Leon Romanovsky --- diff --git a/drivers/infiniband/core/cache.c b/drivers/infiniband/core/cache.c index f8413f8a9f26..9979a351577f 100644 --- a/drivers/infiniband/core/cache.c +++ b/drivers/infiniband/core/cache.c @@ -1501,6 +1501,12 @@ 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 != IB_PORT_NOP && + device->port_data[port].cache.port_state != tprops->state) + ibdev_info(device, "Port: %d Link %s\n", port, + 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,