__lb_run_test(9)

💻 __lb_run_test(9) — like, the loopback test runner bestie 💖

Ok so real talk, this page lives in the Kernel API Manual, and it's all about __lb_run_test — yes that's the name, yes it starts with two underscores, no we don't ask why 🫶. It runs the loopback test. That's the whole vibe. Short page, iconic energy, let's go ✨

---

🌸 NAME 🌸

__lb_run_test — run loopback test 💅

Like, literally just: run the loopback test. No cap. It's giving "small function, important job" and honestly? Obsessed 🎀

---

✨ SYNOPSIS ✨

int __lb_run_test (struct net_device *ndev , enum hnae_loop loop_mode );

That's the whole signature, bestie — returns an int, takes a struct net_device * and an enum hnae_loop. Copy it exactly, commas and all, because we do not be paraphrasing code around here 🔥

---

🦋 ARGUMENTS 🦋

• ndev — the net device 🌐. Like, the network device you're working with. That's it, that's the whole description, keep it moving.
• loop_mode — the loopback mode 🔁. An enum hnae_loop value, telling it which flavour of loopback we're doing. Vibe check passed.

Two args. Two. We love a low-maintenance function 🍓

---

👑 SEE ALSO 👑

Ok this is where it gets iconic because the SEE ALSO list is long and honestly it ate 💀 Every single one of these, bestie, no skipping:

• Kernel file ./drivers/net/ethernet/hisilicon/hns/hns_ethtool.c — yeah, that's where the magic lives, go read it 📖
• hns_nic_get_link(9)
• hns_nic_get_link_ksettings(9)
• hns_nic_set_link_ksettings(9)
• hns_nic_self_test(9)
• hns_nic_get_drvinfo(9)
• hns_get_ringparam(9)
• hns_get_pauseparam(9)
• hns_set_pauseparam(9)
• hns_get_coalesce(9)
• hns_set_coalesce(9)
• hns_get_channels(9)
• hns_get_ethtool_stats(9)
• hns_get_strings(9)
• hns_get_sset_count(9)
• hns_phy_led_set(9)
• hns_set_phys_id(9)
• hns_get_regs(9)
• hns_get_regs_len(9)
• hns_nic_nway_reset(9)

Like, that's the whole hns friend group and they're all invited to the group chat 🫶✨

---

ngl bestie, this page is short and sweet — but every detail still counts, so don't go deleting any of those SEE ALSO entries just because the list is long. They're all main characters 💅

---

Mwah 💋 — this page came from ./drivers/net/ethernet/hisilic..., dated October 2026, and it's filed under __lb_run_test(9) in the Kernel API Manual. That's the tea, drink it up 🧚💜