netdev_state_change(9)

💫 netdev_state_change — the "hey bestie, something changed" broadcast 💫

okay so this is a page from the Kernel API Manual, section 9 (kernel API, iykyk), and it's about netdev_state_change — literally the function you call when a network device goes "guess what, I'm different now" and everyone needs to hear about it. 🎀

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✨ NAME ✨

netdev_state_change — device changes state 🦋

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🌸 SYNOPSIS 🌸

void netdev_state_change (struct net_device *dev );

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💖 ARGUMENTS 💖

• dev — the device that's gonna cause the notification. like, this is the one having a moment and everyone's about to find out 💅

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🌈 DESCRIPTION 🌈

So you call this to say "hey, the device changed state" — that's the whole vibe check. ✨

What it actually does, fr fr: it calls the notifier chains for netdev_chain and sends a NEWLINK message to the routing socket. two things, both iconic, no cap. 👑

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🫶 SEE ALSO 🫶

Kernel file ./net/core/dev_api.c, plus the whole friend group:

• dev_change_name(9)
• dev_set_alias(9)
• dev_change_flags(9)
• dev_set_group(9)
• dev_change_net_namespace(9)
• dev_change_carrier(9)
• dev_change_tx_queue_len(9)
• dev_change_proto_down(9)
• dev_open(9)
• dev_close(9)
• dev_disable_lro(9)
• dev_set_promiscuity(9)
• dev_set_allmulti(9)
• dev_set_mac_address(9)

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that's the whole page bestie, every option and every reference accounted for 💖 now go notify somebody 💖

mwah 💋 this one lives in ./net/core and it's dated October 2026 — see you in the next manpage, love u, bye 🧚‍♀️⭐