149 lines
4.4 KiB
C
149 lines
4.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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/* Copyright (c) 2022/23 Siemens Mobility GmbH */
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#ifndef _LINUX_GSMMUX_H
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#define _LINUX_GSMMUX_H
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#include <linux/const.h>
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#include <linux/if.h>
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#include <linux/ioctl.h>
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#include <linux/types.h>
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/*
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* flags definition for n_gsm
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*
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* Used by:
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* struct gsm_config_ext.flags
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* struct gsm_dlci_config.flags
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*/
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/* Forces a DLCI reset if set. Otherwise, a DLCI reset is only done if
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* incompatible settings were provided. Always cleared on retrieval.
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*/
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#define GSM_FL_RESTART _BITUL(0)
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/**
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* struct gsm_config - n_gsm basic configuration parameters
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*
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* This structure is used in combination with GSMIOC_GETCONF and GSMIOC_SETCONF
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* to retrieve and set the basic parameters of an n_gsm ldisc.
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* struct gsm_config_ext can be used to configure extended ldisc parameters.
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*
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* All timers are in units of 1/100th of a second.
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*
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* @adaption: Convergence layer type
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* @encapsulation: Framing (0 = basic option, 1 = advanced option)
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* @initiator: Initiator or responder
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* @t1: Acknowledgment timer
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* @t2: Response timer for multiplexer control channel
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* @t3: Response timer for wake-up procedure
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* @n2: Maximum number of retransmissions
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* @mru: Maximum incoming frame payload size
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* @mtu: Maximum outgoing frame payload size
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* @k: Window size
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* @i: Frame type (1 = UIH, 2 = UI)
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* @unused: Can not be used
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*/
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struct gsm_config
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{
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unsigned int adaption;
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unsigned int encapsulation;
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unsigned int initiator;
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unsigned int t1;
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unsigned int t2;
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unsigned int t3;
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unsigned int n2;
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unsigned int mru;
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unsigned int mtu;
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unsigned int k;
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unsigned int i;
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unsigned int unused[8];
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};
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#define GSMIOC_GETCONF _IOR('G', 0, struct gsm_config)
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#define GSMIOC_SETCONF _IOW('G', 1, struct gsm_config)
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/**
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* struct gsm_netconfig - n_gsm network configuration parameters
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*
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* This structure is used in combination with GSMIOC_ENABLE_NET and
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* GSMIOC_DISABLE_NET to enable or disable a network data connection
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* over a mux virtual tty channel. This is for modems that support
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* data connections with raw IP frames instead of PPP.
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*
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* @adaption: Adaption to use in network mode.
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* @protocol: Protocol to use - only ETH_P_IP supported.
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* @unused2: Can not be used.
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* @if_name: Interface name format string.
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* @unused: Can not be used.
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*/
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struct gsm_netconfig {
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unsigned int adaption;
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unsigned short protocol;
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unsigned short unused2;
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char if_name[IFNAMSIZ];
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__u8 unused[28];
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};
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#define GSMIOC_ENABLE_NET _IOW('G', 2, struct gsm_netconfig)
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#define GSMIOC_DISABLE_NET _IO('G', 3)
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/* get the base tty number for a configured gsmmux tty */
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#define GSMIOC_GETFIRST _IOR('G', 4, __u32)
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/**
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* struct gsm_config_ext - n_gsm extended configuration parameters
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*
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* This structure is used in combination with GSMIOC_GETCONF_EXT and
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* GSMIOC_SETCONF_EXT to retrieve and set the extended parameters of an
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* n_gsm ldisc.
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*
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* All timers are in units of 1/100th of a second.
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*
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* @keep_alive: Control channel keep-alive in 1/100th of a second (0 to disable).
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* @wait_config: Wait for DLCI config before opening virtual link?
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* @flags: Mux specific flags.
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* @reserved: For future use, must be initialized to zero.
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*/
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struct gsm_config_ext {
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__u32 keep_alive;
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__u32 wait_config;
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__u32 flags;
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__u32 reserved[5];
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};
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#define GSMIOC_GETCONF_EXT _IOR('G', 5, struct gsm_config_ext)
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#define GSMIOC_SETCONF_EXT _IOW('G', 6, struct gsm_config_ext)
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/**
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* struct gsm_dlci_config - n_gsm channel configuration parameters
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*
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* This structure is used in combination with GSMIOC_GETCONF_DLCI and
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* GSMIOC_SETCONF_DLCI to retrieve and set the channel specific parameters
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* of an n_gsm ldisc.
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*
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* Set the channel accordingly before calling GSMIOC_GETCONF_DLCI.
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*
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* @channel: DLCI (0 for the associated DLCI).
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* @adaption: Convergence layer type.
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* @mtu: Maximum transfer unit.
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* @priority: Priority (0 for default value).
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* @i: Frame type (1 = UIH, 2 = UI).
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* @k: Window size (0 for default value).
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* @flags: DLCI specific flags.
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* @reserved: For future use, must be initialized to zero.
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*/
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struct gsm_dlci_config {
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__u32 channel;
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__u32 adaption;
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__u32 mtu;
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__u32 priority;
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__u32 i;
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__u32 k;
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__u32 flags;
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__u32 reserved[7];
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};
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#define GSMIOC_GETCONF_DLCI _IOWR('G', 7, struct gsm_dlci_config)
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#define GSMIOC_SETCONF_DLCI _IOW('G', 8, struct gsm_dlci_config)
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#endif
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