llc_sap_rtn_pdu(9)

💅 NAME 💅

okay bestie, meet llc_sap_rtn_pdu(9) from the Kernel API Manual — the function that Informs upper layer on rx of an UI, XID or TEST pdu. literally its whole job is telling the upper layer that a UI, XID, or TEST pdu just arrived on the rx side, and it does it with main character energy 👑✨

✨ SYNOPSIS ✨

void llc_sap_rtn_pdu (struct llc_sap *sap , struct sk_buff *skb );

that signature is exact, spaces and all — no edits, no crumbs, periodt 💅

🎀 ARGUMENTS 🎀

• sap — pointer to SAP. yes bestie, just a pointer to the SAP — that’s the vibe 🫶
• skb — received pdu. the received pdu that got handed in, no cap 🌸

🌈 SEE ALSO 🌈

Kernel file: ./net/llc/llc_sap.c — go read the source, iykyk 😭💖

the related function squad, all invited to the group chat:

• llc_alloc_frame(9)
• llc_find_sap_trans(9)
• llc_exec_sap_trans_actions(9)
• llc_sap_next_state(9)
• llc_sap_state_process(9)
• llc_build_and_send_test_pkt(9)
• llc_build_and_send_xid_pkt(9)
• llc_sap_rcv(9)
• llc_lookup_dgram(9)
• llc_sap_mcast(9)

xoxo, your source ./net/llc and date October 2026, signing off 💖✨🎀