__skb_tunnel_rx(9)

💅 __skb_tunnel_rx(9) — the Kernel API Manual, bestie edition 🎀

okay so this is a page from the Kernel API Manual, and the star of the show is __skb_tunnel_rx. it's a kernel function, it lives in ./include/net, and it's here to do one very specific little cleanup job. let's get into it ✨

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🌸 NAME 🌸

__skb_tunnel_rx — prepare skb for rx reinsert 🦋

like, it gets your socket buffer all prepped and presentable so it can be shoved back into the receive path. main character energy fr.

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✨ SYNOPSIS ✨

void __skb_tunnel_rx (struct sk_buff *skb , struct net_device *dev ,
       struct net *net );

note the spaces before those commas — that's just how the page writes it, don't come for me 🙈. copy it exact.

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🎀 ARGUMENTS 🎀

• skb — buffer. the actual packet situation, the thing being cleaned up 💖
• dev — tunnel device. the device it's coming through 🫶
• net — netns for packet i/o. which network namespace the packet i/o belongs to 🌈

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👑 DESCRIPTION 👑

so here's the vibe: after decapsulation, the packet is going to re-enter our stack (via netif_rx), so this function makes some cleanups. 🧹✨ that's it, that's the whole job. it's giving responsible older sibling tidying up before the packet goes back into the party.

⚠️ and just so we're clear — no accounting done. the page says it right there in parens. no stats get updated here, bestie. don't expect receipts. 💀

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🔥 SEE ALSO 🔥

• the kernel file ./include/net/dst.h — yes, the whole dst.h file, it's listed like that on the original page 🍓
• skb_dst_drop(9)
• dst_hold_safe(9)
• skb_dst_force(9)
• skb_tunnel_rx(9) — note this one has no leading underscores, so it is not the same function, okay? iykyk 👀

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and that's the page!! 🎉 the footer crew says it comes from ./include/net, dated October 2026, and it's filed under __skb_tunnel_rx(9) — slay, iconic, periodt. 💅🌷