gsm_dlci_begin_close(9)

💅 gsm_dlci_begin_close(9) — Kernel API Manual 💅

okay so bestie, welcome to the page for gsm_dlci_begin_close(9) from the Kernel API Manual. We are keeping every single detail exactly where it belongs. No cap. ✨

✨ NAME ✨

gsm_dlci_begin_close — start channel open procedure

yes, the NAME line literally says start channel open procedure even though this function is about closing. I am not fixing it, bestie — facts are facts. 💅

🌸 SYNOPSIS 🌸

void gsm_dlci_begin_close (struct gsm_dlci *dlci );

🎀 ARGUMENTS 🎀

• dlci — DLCI to open. 🫶

💜 DESCRIPTION 💜

Okay so here's the whole vibe: we commence closing a DLCI from the Linux side. We issue DISC messages to the modem, and the modem should then reply with a UA, at which point we will move into the closed state. Closing is done asynchronously with retry off timers. We may also receive a DM reply from the other end, which indicates the channel was already closed. Literally that's the flow. 😭💖

🔥 SEE ALSO 🔥

Kernel file ./drivers/tty/n_gsm.c — and here is the entire friend group, no one left out:

• gsm_fcs_add(9)
• gsm_fcs_add_block(9)
• gsm_read_ea(9)
• gsm_read_ea_val(9)
• gsm_encode_modem(9)
• gsm_encode_params(9)
• gsm_register_devices(9)
• gsm_unregister_devices(9)
• gsm_print_packet(9)
• gsm_stuff_frame(9)
• gsm_send(9)
• gsm_dlci_clear_queues(9)
• gsm_response(9)
• gsm_command(9)
• gsm_data_alloc(9)
• gsm_send_packet(9)
• gsm_is_flow_ctrl_msg(9)
• gsm_data_kick(9)
• __gsm_data_queue(9)
• gsm_data_queue(9)
• gsm_dlci_data_output(9)
• gsm_dlci_data_output_framed(9)
• gsm_dlci_modem_output(9)
• gsm_dlci_data_sweep(9)
• gsm_dlci_data_kick(9)
• gsm_control_command(9)
• gsm_control_reply(9)
• gsm_process_modem(9)
• gsm_process_negotiation(9)
• gsm_control_modem(9)
• gsm_control_negotiation(9)
• gsm_control_rls(9)
• gsm_control_message(9)
• gsm_control_response(9)
• gsm_control_keep_alive(9)
• gsm_control_transmit(9)
• gsm_control_retransmit(9)
• gsm_control_send(9)
• gsm_control_wait(9)
• gsm_dlci_close(9)
• gsm_dlci_open(9)
• gsm_dlci_negotiate(9)
• gsm_dlci_t1(9)
• gsm_dlci_begin_open(9)
• gsm_dlci_set_opening(9)
• gsm_dlci_set_wait_config(9)
• gsm_dlci_data(9)
• gsm_dlci_command(9)
• gsm_kick_timer(9)
• gsm_dlci_copy_config_values(9)
• gsm_dlci_config(9)
• gsm_dlci_alloc(9)
• gsm_dlci_free(9)
• gsm_dlci_release(9)
• gsm_queue(9)
• gsm0_receive_state_check_and_fix(9)
• gsm0_receive(9)
• gsm1_receive_state_check_and_fix(9)
• gsm1_receive(9)
• gsm_error(9)
• gsm_cleanup_mux(9)
• gsm_activate_mux(9)
• gsm_free_mux(9)
• gsm_free_muxr(9)
• gsm_alloc_mux(9)
• gsmld_output(9)
• gsmld_write_trigger(9)
• gsmld_write_task(9)
• gsmld_attach_gsm(9)
• gsmld_detach_gsm(9)
• gsmld_flush_buffer(9)
• gsmld_close(9)
• gsmld_open(9)
• gsmld_write_wakeup(9)
• gsmld_read(9)
• gsmld_write(9)
• gsmld_poll(9)
• gsm_modem_upd_via_data(9)
• gsm_modem_upd_via_msc(9)
• gsm_modem_update(9)
• gsm_wait_modem_change(9)

Sign-off bestie: this page comes from ./drivers/tty, dated October 2026, and its title is gsm_dlci_begin_close(9). Periodt. 💖✨