ovpn_opcode_from_skb(9)

✨ NAME ✨

okay so welcome to ovpn_opcode_from_skb(9), the Kernel API Manual page that’s literally about one very specific lil job: extract OP code from skb at specified offset 💅✨

like, you hand it an skb and an offset, and it pulls out the OP code for you. bestie behavior, honestly.

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🦋 SYNOPSIS 🦋

u8 ovpn_opcode_from_skb (const struct sk_buff *skb , u16 offset );

that’s the whole signature, no cap. it returns a u8, takes a const struct sk_buff *skb, and takes a u16 offset 🎀

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🌸 ARGUMENTS 🌸

• skb — the packet to extract the OP code from. like, this is the main-character packet bestie 🫶
• offset — the offset in the data buffer where the OP code is located. yes, that exact offset. no guessing, iykyk 💫

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💀 NOTE 💀

this function assumes that the skb head was pulled enough to access the first 4 bytes. fr fr, do not skip this vibe check 😭

like, the function is assuming the first 4 bytes are reachable. that’s the whole caveat. periodt.

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👑 RETURN 👑

it returns the OP code ✨ that’s it, that’s the tea 🍓

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/net/ovpn/proto.h
• ovpn_peer_id_from_skb(9)
• ovpn_key_id_from_skb(9)
• ovpn_opcode_compose(9)

go peep those if you wanna keep the Unix lore going, bestie 💜

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💅 this iconic little page comes from ./drivers/net/ovpn and is dated October 2026 — source/version and date mentioned, cute sign-off complete, slay 🫶✨