ib_query_port(9)

💖 NAME 💖

okay bestie, meet ib_query_port(9) from the Kernel API Manual ✨ this is the page for querying IB port attributes, and it is lowkey doing exactly one job very cleanly 🫶

✨ SYNOPSIS ✨

int ib_query_port (struct ib_device *device , u32 port_num , struct
       ib_port_attr *port_attr );

that's the whole signature, no cap 💅

🎀 ARGUMENTS 🎀

• device — the device to query, bestie. like, which IB device are we looking at?
• port_num — the port number to query. the specific port goes here.
• port_attr — the port attributes. this is where the info lands.

💅 DESCRIPTION 💅

ib_query_port returns the attributes of a port through the port_attr pointer. that's the vibe: device + port number in, port attributes out via that pointer 🔥

🌈 SEE ALSO 🌈

Kernel file: ./drivers/infiniband/core/device.c — go peek the source, iykyk ✨

• rdma_dev_access_netns(9)
• rdma_dev_has_raw_cap(9)
• ib_device_put(9)
• _ib_alloc_device(9)
• ib_dealloc_device(9)
• ib_port_immutable_read(9)
• ib_register_device(9)
• ib_unregister_device(9)
• ib_unregister_device_and_put(9)
• ib_unregister_driver(9)
• ib_unregister_device_queued(9)
• ib_register_client(9)
• ib_unregister_client(9)
• ib_get_client_nl_info(9)
• ib_set_client_data(9)
• ib_register_event_handler(9)
• ib_unregister_event_handler(9)
• ib_device_set_netdev(9)
• ib_query_netdev_port(9)
• ib_device_get_by_netdev(9)
• ib_enum_roce_netdev(9)
• ib_enum_all_roce_netdevs(9)
• ib_device_enable_gid_updates(9)
• ib_device_disable_gid_updates(9)
• ib_query_pkey(9)
• ib_modify_device(9)
• ib_modify_port(9)
• ib_find_gid(9)
• ib_find_pkey(9)
• ib_get_net_dev_by_params(9)

that's the whole page, bestie 🫶 catch you later — source: ./drivers/infiniband/core, stamped October 2026, page name: ib_query_port(9) 💖