udp_tunnel_nic_reset_ntf(9)

🌸 udp_tunnel_nic_reset_ntf(9) — the Kernel API Manual moment 🌸

okay so bestie, welcome to the Kernel API Manual page for udp_tunnel_nic_reset_ntf — literally the "hey girl, the device reset and everything's gone" notification ✨

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✨ NAME ✨

udp_tunnel_nic_reset_ntf — device-originating reset notification 💅

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🦋 SYNOPSIS 🦋

void udp_tunnel_nic_reset_ntf (struct net_device *dev );

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🎀 ARGUMENTS 🎀

• dev — the network interface device structure, aka the whole entire vibe of the NIC you're talking about 🫶

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💖 DESCRIPTION 💖

So here's the tea: the driver calls this function to inform the core that the entire UDP tunnel port state has been lost 😭 — usually because the device got reset, which, yeah, rip to all those ports honestly.

The core will then assume the device forgot all the ports and will issue the .set_port and .sync_table callbacks as necessary to get everything back in order. slay, core is on it 👑

⚠️ important caveat bestie, do NOT skip this: this function must be called with the rtnl lock held, and it will issue all the callbacks before returning. no cap, that part matters 🙈

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🌈 SEE ALSO 🌈

• Kernel file ./include/net/udp_tunnel.h 🍓
• struct udp_tunnel_nic_info(9) 🦋

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and that's the whole page, periodt 💅 this little cutie lives in ./include/net, version October 2026 — mwah, go forth and reset those tunnels responsibly 🧚💜