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![Arnd Bergmann](/assets/img/avatar_default.png)
The ppp_idle structure is defined in terms of __kernel_time_t, which is defined as 'long' on all architectures, and this usage is not affected by the y2038 problem since it transports a time interval rather than an absolute time. However, the ppp user space defines the same structure as time_t, which may be 64-bit wide on new libc versions even on 32-bit architectures. It's easy enough to just handle both possible structure layouts on all architectures, to deal with the possibility that a user space ppp implementation comes with its own ppp_idle structure definition, as well as to document the fact that the driver is y2038-safe. Doing this also avoids the need for a special compat mode translation, since 32-bit and 64-bit kernels now support the same interfaces. The old 32-bit structure is also available on native 64-bit architectures now, but this is harmless. Cc: netdev@vger.kernel.org Cc: linux-ppp@vger.kernel.org Cc: Paul Mackerras <paulus@samba.org> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
123 lines
5.5 KiB
C
123 lines
5.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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/*
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* ppp-ioctl.h - PPP ioctl definitions.
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*
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* Copyright 1999-2002 Paul Mackerras.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*/
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#ifndef _PPP_IOCTL_H
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#define _PPP_IOCTL_H
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#include <linux/types.h>
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#include <linux/compiler.h>
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#include <linux/ppp_defs.h>
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/*
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* Bit definitions for flags argument to PPPIOCGFLAGS/PPPIOCSFLAGS.
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*/
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#define SC_COMP_PROT 0x00000001 /* protocol compression (output) */
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#define SC_COMP_AC 0x00000002 /* header compression (output) */
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#define SC_COMP_TCP 0x00000004 /* TCP (VJ) compression (output) */
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#define SC_NO_TCP_CCID 0x00000008 /* disable VJ connection-id comp. */
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#define SC_REJ_COMP_AC 0x00000010 /* reject adrs/ctrl comp. on input */
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#define SC_REJ_COMP_TCP 0x00000020 /* reject TCP (VJ) comp. on input */
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#define SC_CCP_OPEN 0x00000040 /* Look at CCP packets */
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#define SC_CCP_UP 0x00000080 /* May send/recv compressed packets */
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#define SC_ENABLE_IP 0x00000100 /* IP packets may be exchanged */
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#define SC_LOOP_TRAFFIC 0x00000200 /* send traffic to pppd */
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#define SC_MULTILINK 0x00000400 /* do multilink encapsulation */
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#define SC_MP_SHORTSEQ 0x00000800 /* use short MP sequence numbers */
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#define SC_COMP_RUN 0x00001000 /* compressor has been inited */
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#define SC_DECOMP_RUN 0x00002000 /* decompressor has been inited */
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#define SC_MP_XSHORTSEQ 0x00004000 /* transmit short MP seq numbers */
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#define SC_DEBUG 0x00010000 /* enable debug messages */
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#define SC_LOG_INPKT 0x00020000 /* log contents of good pkts recvd */
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#define SC_LOG_OUTPKT 0x00040000 /* log contents of pkts sent */
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#define SC_LOG_RAWIN 0x00080000 /* log all chars received */
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#define SC_LOG_FLUSH 0x00100000 /* log all chars flushed */
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#define SC_SYNC 0x00200000 /* synchronous serial mode */
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#define SC_MUST_COMP 0x00400000 /* no uncompressed packets may be sent or received */
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#define SC_MASK 0x0f600fff /* bits that user can change */
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/* state bits */
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#define SC_XMIT_BUSY 0x10000000 /* (used by isdn_ppp?) */
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#define SC_RCV_ODDP 0x08000000 /* have rcvd char with odd parity */
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#define SC_RCV_EVNP 0x04000000 /* have rcvd char with even parity */
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#define SC_RCV_B7_1 0x02000000 /* have rcvd char with bit 7 = 1 */
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#define SC_RCV_B7_0 0x01000000 /* have rcvd char with bit 7 = 0 */
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#define SC_DC_FERROR 0x00800000 /* fatal decomp error detected */
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#define SC_DC_ERROR 0x00400000 /* non-fatal decomp error detected */
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/* Used with PPPIOCGNPMODE/PPPIOCSNPMODE */
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struct npioctl {
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int protocol; /* PPP protocol, e.g. PPP_IP */
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enum NPmode mode;
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};
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/* Structure describing a CCP configuration option, for PPPIOCSCOMPRESS */
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struct ppp_option_data {
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__u8 __user *ptr;
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__u32 length;
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int transmit;
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};
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/* For PPPIOCGL2TPSTATS */
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struct pppol2tp_ioc_stats {
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__u16 tunnel_id; /* redundant */
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__u16 session_id; /* if zero, get tunnel stats */
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__u32 using_ipsec:1;
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__aligned_u64 tx_packets;
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__aligned_u64 tx_bytes;
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__aligned_u64 tx_errors;
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__aligned_u64 rx_packets;
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__aligned_u64 rx_bytes;
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__aligned_u64 rx_seq_discards;
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__aligned_u64 rx_oos_packets;
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__aligned_u64 rx_errors;
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};
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/*
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* Ioctl definitions.
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*/
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#define PPPIOCGFLAGS _IOR('t', 90, int) /* get configuration flags */
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#define PPPIOCSFLAGS _IOW('t', 89, int) /* set configuration flags */
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#define PPPIOCGASYNCMAP _IOR('t', 88, int) /* get async map */
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#define PPPIOCSASYNCMAP _IOW('t', 87, int) /* set async map */
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#define PPPIOCGUNIT _IOR('t', 86, int) /* get ppp unit number */
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#define PPPIOCGRASYNCMAP _IOR('t', 85, int) /* get receive async map */
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#define PPPIOCSRASYNCMAP _IOW('t', 84, int) /* set receive async map */
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#define PPPIOCGMRU _IOR('t', 83, int) /* get max receive unit */
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#define PPPIOCSMRU _IOW('t', 82, int) /* set max receive unit */
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#define PPPIOCSMAXCID _IOW('t', 81, int) /* set VJ max slot ID */
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#define PPPIOCGXASYNCMAP _IOR('t', 80, ext_accm) /* get extended ACCM */
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#define PPPIOCSXASYNCMAP _IOW('t', 79, ext_accm) /* set extended ACCM */
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#define PPPIOCXFERUNIT _IO('t', 78) /* transfer PPP unit */
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#define PPPIOCSCOMPRESS _IOW('t', 77, struct ppp_option_data)
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#define PPPIOCGNPMODE _IOWR('t', 76, struct npioctl) /* get NP mode */
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#define PPPIOCSNPMODE _IOW('t', 75, struct npioctl) /* set NP mode */
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#define PPPIOCSPASS _IOW('t', 71, struct sock_fprog) /* set pass filter */
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#define PPPIOCSACTIVE _IOW('t', 70, struct sock_fprog) /* set active filt */
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#define PPPIOCGDEBUG _IOR('t', 65, int) /* Read debug level */
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#define PPPIOCSDEBUG _IOW('t', 64, int) /* Set debug level */
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#define PPPIOCGIDLE _IOR('t', 63, struct ppp_idle) /* get idle time */
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#define PPPIOCGIDLE32 _IOR('t', 63, struct ppp_idle32) /* 32-bit times */
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#define PPPIOCGIDLE64 _IOR('t', 63, struct ppp_idle64) /* 64-bit times */
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#define PPPIOCNEWUNIT _IOWR('t', 62, int) /* create new ppp unit */
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#define PPPIOCATTACH _IOW('t', 61, int) /* attach to ppp unit */
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#define PPPIOCDETACH _IOW('t', 60, int) /* obsolete, do not use */
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#define PPPIOCSMRRU _IOW('t', 59, int) /* set multilink MRU */
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#define PPPIOCCONNECT _IOW('t', 58, int) /* connect channel to unit */
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#define PPPIOCDISCONN _IO('t', 57) /* disconnect channel */
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#define PPPIOCATTCHAN _IOW('t', 56, int) /* attach to ppp channel */
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#define PPPIOCGCHAN _IOR('t', 55, int) /* get ppp channel number */
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#define PPPIOCGL2TPSTATS _IOR('t', 54, struct pppol2tp_ioc_stats)
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#define SIOCGPPPSTATS (SIOCDEVPRIVATE + 0)
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#define SIOCGPPPVER (SIOCDEVPRIVATE + 1) /* NEVER change this!! */
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#define SIOCGPPPCSTATS (SIOCDEVPRIVATE + 2)
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#endif /* _PPP_IOCTL_H */
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