llc_sap_action_unitdata_ind(9)

💅 llc_sap_action_unitdata_ind(9) 💅

okay so this is a page from the Kernel API Manual, and bestie it's a tiny one but it matters — it's the little handler that grabs a UI PDU off the MAC layer and yeets it up to the network layer. no cap, kind of iconic of it.

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✨ NAME ✨

llc_sap_action_unitdata_ind — forward UI PDU to network layer 🦋

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✨ SYNOPSIS ✨

int llc_sap_action_unitdata_ind (struct llc_sap *sap , struct sk_buff
*skb );

like, it takes a struct llc_sap * and a struct sk_buff * and hands you back an int. slay.

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✨ ARGUMENTS ✨

• sap — the SAP. that's it, that's the whole description. it's giving "trust me bestie you already know" 🌸
• skb — the event to forward. this is the little guy going places. 🎀

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✨ DESCRIPTION ✨

so here's the vibe: a UI PDU shows up from the MAC layer, right? this function forwards it to the network layer as a UNITDATA INDICATION</p> — that's the whole job, and honestly? she ate. 💅

and while she's at it, she also verifies our event is the kind we expect ✨ — a little vibe check before the forwarding, yk? 🔥

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✨ SEE ALSO ✨

• Kernel file ./net/llc/llc_s_ac.c 👑
• llc_sap_action_send_ui(9)
• llc_sap_action_send_xid_c(9)
• llc_sap_action_send_xid_r(9)
• llc_sap_action_send_test_c(9)
• llc_sap_action_report_status(9)
• llc_sap_action_xid_ind(9)
• llc_sap_action_test_ind(9)

like, the whole friend group. go read the rest of them fr fr 🫶

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mwah 💖 that's the page! brought to you straight out of ./net/llc, dated October 2026, and it lives at llc_sap_action_unitdata_ind(9) forever and always. bye bestie, drink some water 🌈