/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ /* Copyright (c) 2022/23 Siemens Mobility GmbH */ #ifndef _LINUX_GSMMUX_H #define _LINUX_GSMMUX_H #include <linux/const.h> #include <linux/if.h> #include <linux/ioctl.h> #include <linux/types.h> /* * flags definition for n_gsm * * Used by: * struct gsm_config_ext.flags * struct gsm_dlci_config.flags */ /* Forces a DLCI reset if set. Otherwise, a DLCI reset is only done if * incompatible settings were provided. Always cleared on retrieval. */ #define GSM_FL_RESTART … /** * struct gsm_config - n_gsm basic configuration parameters * * This structure is used in combination with GSMIOC_GETCONF and GSMIOC_SETCONF * to retrieve and set the basic parameters of an n_gsm ldisc. * struct gsm_config_ext can be used to configure extended ldisc parameters. * * All timers are in units of 1/100th of a second. * * @adaption: Convergence layer type * @encapsulation: Framing (0 = basic option, 1 = advanced option) * @initiator: Initiator or responder * @t1: Acknowledgment timer * @t2: Response timer for multiplexer control channel * @t3: Response timer for wake-up procedure * @n2: Maximum number of retransmissions * @mru: Maximum incoming frame payload size * @mtu: Maximum outgoing frame payload size * @k: Window size * @i: Frame type (1 = UIH, 2 = UI) * @unused: Can not be used */ struct gsm_config { … }; #define GSMIOC_GETCONF … #define GSMIOC_SETCONF … /** * struct gsm_netconfig - n_gsm network configuration parameters * * This structure is used in combination with GSMIOC_ENABLE_NET and * GSMIOC_DISABLE_NET to enable or disable a network data connection * over a mux virtual tty channel. This is for modems that support * data connections with raw IP frames instead of PPP. * * @adaption: Adaption to use in network mode. * @protocol: Protocol to use - only ETH_P_IP supported. * @unused2: Can not be used. * @if_name: Interface name format string. * @unused: Can not be used. */ struct gsm_netconfig { … }; #define GSMIOC_ENABLE_NET … #define GSMIOC_DISABLE_NET … /* get the base tty number for a configured gsmmux tty */ #define GSMIOC_GETFIRST … /** * struct gsm_config_ext - n_gsm extended configuration parameters * * This structure is used in combination with GSMIOC_GETCONF_EXT and * GSMIOC_SETCONF_EXT to retrieve and set the extended parameters of an * n_gsm ldisc. * * All timers are in units of 1/100th of a second. * * @keep_alive: Control channel keep-alive in 1/100th of a second (0 to disable). * @wait_config: Wait for DLCI config before opening virtual link? * @flags: Mux specific flags. * @reserved: For future use, must be initialized to zero. */ struct gsm_config_ext { … }; #define GSMIOC_GETCONF_EXT … #define GSMIOC_SETCONF_EXT … /** * struct gsm_dlci_config - n_gsm channel configuration parameters * * This structure is used in combination with GSMIOC_GETCONF_DLCI and * GSMIOC_SETCONF_DLCI to retrieve and set the channel specific parameters * of an n_gsm ldisc. * * Set the channel accordingly before calling GSMIOC_GETCONF_DLCI. * * @channel: DLCI (0 for the associated DLCI). * @adaption: Convergence layer type. * @mtu: Maximum transfer unit. * @priority: Priority (0 for default value). * @i: Frame type (1 = UIH, 2 = UI). * @k: Window size (0 for default value). * @flags: DLCI specific flags. * @reserved: For future use, must be initialized to zero. */ struct gsm_dlci_config { … }; #define GSMIOC_GETCONF_DLCI … #define GSMIOC_SETCONF_DLCI … #endif
Codebase Browser
linux