ib_enum_roce_netdev(9)

🦋 ib_enum_roce_netdev(9) — the kernel API manual page, bestie edition ✨

okay so this is a page from the Kernel API Manual, and it's about ib_enum_roce_netdev — yes the whole name, it's a mouthful, we deal 💅

🌸 NAME 🌸

ib_enum_roce_netdev — enumerate all RoCE ports

✨ SYNOPSIS ✨

void ib_enum_roce_netdev (struct ib_device *ib_dev , roce_netdev_filter
filter , void *filter_cookie , roce_netdev_callback cb , void *cookie );

🎀 ARGUMENTS 🎀

• ib_dev — the IB device we want to query. that's the one we're snooping on 👀
• filter — should we call the callback? literally the vibe check for each port, bestie.
• filter_cookie — cookie passed to the filter 🍪
• cb — callback to call for each found RoCE port. one call per port, no crumbs.
• cookie — cookie passed back to the callback 🍪 (yes, a second cookie. we love a snack)

💜 DESCRIPTION 💜

So what this does: it enumerates all of the physical RoCE ports of ib_dev that are related to netdevice, and then calls cb on each device where the filter function returns non-zero. that's it. that's the whole thing. the filter gets a say, and if the filter says yes (non-zero = yes, slay), the callback gets invoked. no cap 🫶

ngl, the filter-returns-non-zero gate is the whole personality of this function — no non-zero, no callback. periodt.

🔥 SEE ALSO 🔥

the whole friend group, in order, plus where the code actually lives — kerning <cyan>Kernel file ./drivers/infiniband/core/device.c`:

• 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_query_port(9)
• ib_device_set_netdev(9)
• ib_query_netdev_port(9)
• ib_device_get_by_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)

and that's the page, bestie 💖 it lives over in ./drivers/infiniband/core, the source dates to October 2026, and the version tag on this manual page is ib_enum_roce_netdev(9) — same as the title, iconic of it honestly. go forth and enumerate responsibly 🧚‍♀️✨