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a7b121b4b8
Guessing the first tty for a gsm0710 multiplexed serial device is not currently possible, which makes it racy to use with multiple modems. Add a way to map the physical serial tty to its related mux devices using an ioctl. Signed-off-by: Martin Hundebøll <martin@geanix.com> Link: https://lore.kernel.org/r/20190812211243.98686-1-martin@geanix.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
43 lines
1.1 KiB
C
43 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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#ifndef _LINUX_GSMMUX_H
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#define _LINUX_GSMMUX_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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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]; /* Padding for expansion without
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breaking stuff */
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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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struct gsm_netconfig {
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unsigned int adaption; /* Adaption to use in network mode */
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unsigned short protocol;/* Protocol to use - only ETH_P_IP supported */
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unsigned short unused2;
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char if_name[IFNAMSIZ]; /* interface name format string */
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__u8 unused[28]; /* For future use */
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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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#endif
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