gsm_modem_upd_via_data(9)

💖 gsm_modem_upd_via_data(9) — Kernel API Manual energy 💖

okay bestie, welcome to the Kernel API Manual entry for gsm_modem_upd_via_data(9). This is the little function that does the modem bits via convergence layer thing, and we’re gonna get you comfy with it. No cap.

✨ NAME ✨

gsm_modem_upd_via_data — send modem bits via convergence layer. That’s the whole assignment, periodt. 🦋

🌸 SYNOPSIS 🌸

void gsm_modem_upd_via_data (struct gsm_dlci *dlci , u8 brk );

🎀 ARGUMENTS 🎀

• dlci — channel. This is the channel, bestie. 💅
• brk — break signal. This is the break signal. 🫶

🔥 DESCRIPTION 🔥

It’s lowkey giving: send an empty frame to signal mobile state changes and to transmit the break signal for adaption 2. That’s literally the move. ✨

🦋 SEE ALSO 🦋

Kernel file: ./drivers/tty/n_gsm.c — and the whole extended GSM friend group is here, iykyk:

• 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_begin_close(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_msc(9), gsm_modem_update(9)
• gsm_wait_modem_change(9)

bye bestie — this page’s source/version is ./drivers/tty, dated October 2026 💖🫶