batadv_is_valid_iface(9)

💅 batadv_is_valid_iface(9) — like, the Kernel API Manual page, bestie

okay so this is batadv_is_valid_iface, straight out of the Kernel API Manual, and it's basically the bouncer at the club door of your batman-adv mesh 🎀 she looks at a net_device and decides if it's allowed in as a hard interface. no cap, that's the whole job. let's get into it ✨

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✨ NAME ✨

batadv_is_valid_iface — checks whether a net_device can actually be used as a hard interface 🫶

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🦋 SYNOPSIS 🦋

bool batadv_is_valid_iface (const struct net_device *net_dev );

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🌸 ARGUMENTS 🌸

• net_dev — the net_device we're putting through the vibe check 👀 that's the one being checked, mwah.

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💖 DESCRIPTION 💖

So here's the tea ☕ this function is gonna refuse — like, hard no, not today — any of the following:

• loopback devices 🙅‍♀️
• non-Ethernet devices 🙅‍♀️
• devices with a non-Ethernet address length 🙅‍♀️
• and literally any device that's already part of a batman-adv mesh interface stack 🙅‍♀️

like if it's already in the stack, bestie, it's taken. we don't do that here 💀

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👑 RETURN 👑

• true — congrats babes, net_dev can be used as a hard interface 💖✨
• false — nope, not valid, better luck next time 😭

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🌈 SEE ALSO 🌈

Kernel file ./net/batman-adv/hard-interface.c — iykyk, that's where she lives 🏠

• batadv_hardif_release(9)
• batadv_hardif_get_by_netdev(9)
• batadv_getlink_net(9)
• batadv_mutual_parents(9)
• batadv_is_on_batman_iface(9)
• __batadv_get_real_netdev(9)
• batadv_get_real_netdev(9)
• batadv_is_wext_netdev(9)
• batadv_is_cfg80211_netdev(9)
• batadv_wifi_flags_evaluate(9)
• batadv_netdev_get_wifi_flags(9)
• batadv_hardif_get_wifi_flags(9)
• batadv_is_wifi_hardif(9)
• batadv_hardif_no_broadcast(9)
• batadv_hardif_get_active(9)
• batadv_primary_if_update_addr(9)
• batadv_primary_if_select(9)
• batadv_hardif_is_iface_up(9)
• batadv_check_known_mac_addr(9)
• batadv_hardif_recalc_extra_skbroom(9)
• batadv_hardif_min_mtu(9)
• batadv_update_min_mtu(9)
• batadv_hardif_activate_interface(9)
• batadv_hardif_deactivate_interface(9)
• batadv_hardif_enable_interface(9)
• batadv_hardif_disable_interface(9)
• batadv_hard_if_event_meshif(9)
• batadv_wifi_net_device_insert(9)
• batadv_wifi_net_device_remove(9)
• batadv_wifi_net_device_update(9)
• batadv_wifi_net_device_unregister(9)
• batadv_wifi_net_device_event(9)
• batadv_hard_if_event(9)
• batadv_wifi_net_devices_init(9)
• batadv_wifi_net_devices_deinit(9)

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ok that's the whole page, go be iconic with your hard interfaces 💅

anyway that's a wrap, besties 🫶 this one's from the source tree at ./net/batman-adv, dated October 2026, and it's the batadv_is_valid_iface(9) page — slay, bye 💜