llc_pdu_decode_sa(9)

💖 llc_pdu_decode_sa(9) — the Kernel API Manual era ✨

okay so bestie, welcome to the llc_pdu_decode_sa(9) page of the Kernel API Manual, and honestly? it's giving "small function, big main character energy" 🎀 no cap, this is the little helper that looks at a frame and pulls the source MAC address right out of it. let's get into it 💅

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🌸 NAME 🌸

llc_pdu_decode_sa — extracts, source address (MAC) of input frame 🦋

like, literally its whole job. it extracts the source address (that's the MAC, iykyk) of the input frame. periodt.

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✨ SYNOPSIS ✨

void llc_pdu_decode_sa (struct sk_buff *skb , u8 *sa );

that's it. that's the whole signature 🫶 no return value, it just does the thing.

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🎀 ARGUMENTS 🎀

• skb — the input skb, aka the frame you're pulling the source address out of 😌 this is the "from it" part, bestie, the address gets extracted from this.
• sa — a pointer to the source address, which is a 6 byte array 📏 six bytes, no more no less, that's the MAC-sized slot right there.

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💅 DESCRIPTION 💅

so what does it do? it extracts the source address (MAC) of the input frame. 🌈 that's the vibe. you hand it the skb and a 6-byte array to point at, and it fills in the source address for you. iconic behaviour, honestly, no notes 🔥

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👑 SEE ALSO 👑

bestie please go read the neighbors too, they're all in the kernel file ./include/net/llc_pdu.h and they're all obsessed with each other 💖

• llc_pdu_header_init(9)
• llc_pdu_decode_da(9)
• llc_pdu_decode_ssap(9)
• llc_pdu_decode_dsap(9)
• llc_pdu_init_as_ui_cmd(9)
• llc_pdu_init_as_test_cmd(9)
• llc_pdu_init_as_test_rsp(9)
• llc_pdu_init_as_xid_cmd(9)
• llc_pdu_init_as_xid_rsp(9)

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ngl the whole decode + init squad is right there in ./include/net/llc_pdu.h, so go say hi 🫶

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and that's the page!! 💜 this one lives under ./include/net, dated October 2026, and it's filed as llc_pdu_decode_sa(9) — slay, bye bestie!! 🍓🧚‍♀️✨