/* * sysctl.h: General linux system control interface * * Begun 24 March 1995, Stephen Tweedie * **************************************************************** **************************************************************** ** ** WARNING: ** The values in this file are exported to user space via ** the sysctl() binary interface. Do *NOT* change the ** numbering of any existing values here, and do not change ** any numbers within any one set of values. If you have to ** redefine an existing interface, use a new number for it. ** The kernel will then return -ENOTDIR to any application using ** the old binary interface. ** ** For new interfaces unless you really need a binary number ** please use CTL_UNNUMBERED. ** **************************************************************** **************************************************************** */ #ifndef _LINUX_SYSCTL_H #define _LINUX_SYSCTL_H #include #include #include struct file; struct completion; #define CTL_MAXNAME 10 /* how many path components do we allow in a call to sysctl? In other words, what is the largest acceptable value for the nlen member of a struct __sysctl_args to have? */ struct __sysctl_args { int __user *name; int nlen; void __user *oldval; size_t __user *oldlenp; void __user *newval; size_t newlen; unsigned long __unused[4]; }; /* Define sysctl names first */ /* Top-level names: */ /* For internal pattern-matching use only: */ #ifdef __KERNEL__ #define CTL_NONE 0 #define CTL_UNNUMBERED CTL_NONE /* sysctl without a binary number */ #endif enum { CTL_KERN=1, /* General kernel info and control */ CTL_VM=2, /* VM management */ CTL_NET=3, /* Networking */ CTL_PROC=4, /* removal breaks strace(1) compilation */ CTL_FS=5, /* Filesystems */ CTL_DEBUG=6, /* Debugging */ CTL_DEV=7, /* Devices */ CTL_BUS=8, /* Busses */ CTL_ABI=9, /* Binary emulation */ CTL_CPU=10, /* CPU stuff (speed scaling, etc) */ CTL_ARLAN=254, /* arlan wireless driver */ CTL_S390DBF=5677, /* s390 debug */ CTL_SUNRPC=7249, /* sunrpc debug */ CTL_PM=9899, /* frv power management */ CTL_FRV=9898, /* frv specific sysctls */ }; /* CTL_BUS names: */ enum { CTL_BUS_ISA=1 /* ISA */ }; /* /proc/sys/fs/inotify/ */ enum { INOTIFY_MAX_USER_INSTANCES=1, /* max instances per user */ INOTIFY_MAX_USER_WATCHES=2, /* max watches per user */ INOTIFY_MAX_QUEUED_EVENTS=3 /* max queued events per instance */ }; /* CTL_KERN names: */ enum { KERN_OSTYPE=1, /* string: system version */ KERN_OSRELEASE=2, /* string: system release */ KERN_OSREV=3, /* int: system revision */ KERN_VERSION=4, /* string: compile time info */ KERN_SECUREMASK=5, /* struct: maximum rights mask */ KERN_PROF=6, /* table: profiling information */ KERN_NODENAME=7, KERN_DOMAINNAME=8, KERN_PANIC=15, /* int: panic timeout */ KERN_REALROOTDEV=16, /* real root device to mount after initrd */ KERN_SPARC_REBOOT=21, /* reboot command on Sparc */ KERN_CTLALTDEL=22, /* int: allow ctl-alt-del to reboot */ KERN_PRINTK=23, /* struct: control printk logging parameters */ KERN_NAMETRANS=24, /* Name translation */ KERN_PPC_HTABRECLAIM=25, /* turn htab reclaimation on/off on PPC */ KERN_PPC_ZEROPAGED=26, /* turn idle page zeroing on/off on PPC */ KERN_PPC_POWERSAVE_NAP=27, /* use nap mode for power saving */ KERN_MODPROBE=28, KERN_SG_BIG_BUFF=29, KERN_ACCT=30, /* BSD process accounting parameters */ KERN_PPC_L2CR=31, /* l2cr register on PPC */ KERN_RTSIGNR=32, /* Number of rt sigs queued */ KERN_RTSIGMAX=33, /* Max queuable */ KERN_SHMMAX=34, /* long: Maximum shared memory segment */ KERN_MSGMAX=35, /* int: Maximum size of a messege */ KERN_MSGMNB=36, /* int: Maximum message queue size */ KERN_MSGPOOL=37, /* int: Maximum system message pool size */ KERN_SYSRQ=38, /* int: Sysreq enable */ KERN_MAX_THREADS=39, /* int: Maximum nr of threads in the system */ KERN_RANDOM=40, /* Random driver */ KERN_SHMALL=41, /* int: Maximum size of shared memory */ KERN_MSGMNI=42, /* int: msg queue identifiers */ KERN_SEM=43, /* struct: sysv semaphore limits */ KERN_SPARC_STOP_A=44, /* int: Sparc Stop-A enable */ KERN_SHMMNI=45, /* int: shm array identifiers */ KERN_OVERFLOWUID=46, /* int: overflow UID */ KERN_OVERFLOWGID=47, /* int: overflow GID */ KERN_SHMPATH=48, /* string: path to shm fs */ KERN_HOTPLUG=49, /* string: path to uevent helper (deprecated) */ KERN_IEEE_EMULATION_WARNINGS=50, /* int: unimplemented ieee instructions */ KERN_S390_USER_DEBUG_LOGGING=51, /* int: dumps of user faults */ KERN_CORE_USES_PID=52, /* int: use core or core.%pid */ KERN_TAINTED=53, /* int: various kernel tainted flags */ KERN_CADPID=54, /* int: PID of the process to notify on CAD */ KERN_PIDMAX=55, /* int: PID # limit */ KERN_CORE_PATTERN=56, /* string: pattern for core-file names */ KERN_PANIC_ON_OOPS=57, /* int: whether we will panic on an oops */ KERN_HPPA_PWRSW=58, /* int: hppa soft-power enable */ KERN_HPPA_UNALIGNED=59, /* int: hppa unaligned-trap enable */ KERN_PRINTK_RATELIMIT=60, /* int: tune printk ratelimiting */ KERN_PRINTK_RATELIMIT_BURST=61, /* int: tune printk ratelimiting */ KERN_PTY=62, /* dir: pty driver */ KERN_NGROUPS_MAX=63, /* int: NGROUPS_MAX */ KERN_SPARC_SCONS_PWROFF=64, /* int: serial console power-off halt */ KERN_HZ_TIMER=65, /* int: hz timer on or off */ KERN_UNKNOWN_NMI_PANIC=66, /* int: unknown nmi panic flag */ KERN_BOOTLOADER_TYPE=67, /* int: boot loader type */ KERN_RANDOMIZE=68, /* int: randomize virtual address space */ KERN_SETUID_DUMPABLE=69, /* int: behaviour of dumps for setuid core */ KERN_SPIN_RETRY=70, /* int: number of spinlock retries */ KERN_ACPI_VIDEO_FLAGS=71, /* int: flags for setting up video after ACPI sleep */ KERN_IA64_UNALIGNED=72, /* int: ia64 unaligned userland trap enable */ KERN_COMPAT_LOG=73, /* int: print compat layer messages */ KERN_MAX_LOCK_DEPTH=74, KERN_NMI_WATCHDOG=75, /* int: enable/disable nmi watchdog */ KERN_PANIC_ON_NMI=76, /* int: whether we will panic on an unrecovered */ }; /* CTL_VM names: */ enum { VM_UNUSED1=1, /* was: struct: Set vm swapping control */ VM_UNUSED2=2, /* was; int: Linear or sqrt() swapout for hogs */ VM_UNUSED3=3, /* was: struct: Set free page thresholds */ VM_UNUSED4=4, /* Spare */ VM_OVERCOMMIT_MEMORY=5, /* Turn off the virtual memory safety limit */ VM_UNUSED5=6, /* was: struct: Set buffer memory thresholds */ VM_UNUSED7=7, /* was: struct: Set cache memory thresholds */ VM_UNUSED8=8, /* was: struct: Control kswapd behaviour */ VM_UNUSED9=9, /* was: struct: Set page table cache parameters */ VM_PAGE_CLUSTER=10, /* int: set number of pages to swap together */ VM_DIRTY_BACKGROUND=11, /* dirty_background_ratio */ VM_DIRTY_RATIO=12, /* dirty_ratio */ VM_DIRTY_WB_CS=13, /* dirty_writeback_centisecs */ VM_DIRTY_EXPIRE_CS=14, /* dirty_expire_centisecs */ VM_NR_PDFLUSH_THREADS=15, /* nr_pdflush_threads */ VM_OVERCOMMIT_RATIO=16, /* percent of RAM to allow overcommit in */ VM_PAGEBUF=17, /* struct: Control pagebuf parameters */ VM_HUGETLB_PAGES=18, /* int: Number of available Huge Pages */ VM_SWAPPINESS=19, /* Tendency to steal mapped memory */ VM_LOWMEM_RESERVE_RATIO=20,/* reservation ratio for lower memory zones */ VM_MIN_FREE_KBYTES=21, /* Minimum free kilobytes to maintain */ VM_MAX_MAP_COUNT=22, /* int: Maximum number of mmaps/address-space */ VM_LAPTOP_MODE=23, /* vm laptop mode */ VM_BLOCK_DUMP=24, /* block dump mode */ VM_HUGETLB_GROUP=25, /* permitted hugetlb group */ VM_VFS_CACHE_PRESSURE=26, /* dcache/icache reclaim pressure */ VM_LEGACY_VA_LAYOUT=27, /* legacy/compatibility virtual address space layout */ VM_SWAP_TOKEN_TIMEOUT=28, /* default time for token time out */ VM_DROP_PAGECACHE=29, /* int: nuke lots of pagecache */ VM_PERCPU_PAGELIST_FRACTION=30,/* int: fraction of pages in each percpu_pagelist */ VM_ZONE_RECLAIM_MODE=31, /* reclaim local zone memory before going off node */ VM_MIN_UNMAPPED=32, /* Set min percent of unmapped pages */ VM_PANIC_ON_OOM=33, /* panic at out-of-memory */ VM_VDSO_ENABLED=34, /* map VDSO into new processes? */ VM_MIN_SLAB=35, /* Percent pages ignored by zone reclaim */ }; /* CTL_NET names: */ enum { NET_CORE=1, NET_ETHER=2, NET_802=3, NET_UNIX=4, NET_IPV4=5, NET_IPX=6, NET_ATALK=7, NET_NETROM=8, NET_AX25=9, NET_BRIDGE=10, NET_ROSE=11, NET_IPV6=12, NET_X25=13, NET_TR=14, NET_DECNET=15, NET_ECONET=16, NET_SCTP=17, NET_LLC=18, NET_NETFILTER=19, NET_DCCP=20, NET_IRDA=412, }; /* /proc/sys/kernel/random */ enum { RANDOM_POOLSIZE=1, RANDOM_ENTROPY_COUNT=2, RANDOM_READ_THRESH=3, RANDOM_WRITE_THRESH=4, RANDOM_BOOT_ID=5, RANDOM_UUID=6 }; /* /proc/sys/kernel/pty */ enum { PTY_MAX=1, PTY_NR=2 }; /* /proc/sys/bus/isa */ enum { BUS_ISA_MEM_BASE=1, BUS_ISA_PORT_BASE=2, BUS_ISA_PORT_SHIFT=3 }; /* /proc/sys/net/core */ enum { NET_CORE_WMEM_MAX=1, NET_CORE_RMEM_MAX=2, NET_CORE_WMEM_DEFAULT=3, NET_CORE_RMEM_DEFAULT=4, /* was NET_CORE_DESTROY_DELAY */ NET_CORE_MAX_BACKLOG=6, NET_CORE_FASTROUTE=7, NET_CORE_MSG_COST=8, NET_CORE_MSG_BURST=9, NET_CORE_OPTMEM_MAX=10, NET_CORE_HOT_LIST_LENGTH=11, NET_CORE_DIVERT_VERSION=12, NET_CORE_NO_CONG_THRESH=13, NET_CORE_NO_CONG=14, NET_CORE_LO_CONG=15, NET_CORE_MOD_CONG=16, NET_CORE_DEV_WEIGHT=17, NET_CORE_SOMAXCONN=18, NET_CORE_BUDGET=19, NET_CORE_AEVENT_ETIME=20, NET_CORE_AEVENT_RSEQTH=21, NET_CORE_WARNINGS=22, }; /* /proc/sys/net/ethernet */ /* /proc/sys/net/802 */ /* /proc/sys/net/unix */ enum { NET_UNIX_DESTROY_DELAY=1, NET_UNIX_DELETE_DELAY=2, NET_UNIX_MAX_DGRAM_QLEN=3, }; /* /proc/sys/net/netfilter */ enum { NET_NF_CONNTRACK_MAX=1, NET_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT=2, NET_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV=3, NET_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED=4, NET_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT=5, NET_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT=6, NET_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK=7, NET_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT=8, NET_NF_CONNTRACK_TCP_TIMEOUT_CLOSE=9, NET_NF_CONNTRACK_UDP_TIMEOUT=10, NET_NF_CONNTRACK_UDP_TIMEOUT_STREAM=11, NET_NF_CONNTRACK_ICMP_TIMEOUT=12, NET_NF_CONNTRACK_GENERIC_TIMEOUT=13, NET_NF_CONNTRACK_BUCKETS=14, NET_NF_CONNTRACK_LOG_INVALID=15, NET_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS=16, NET_NF_CONNTRACK_TCP_LOOSE=17, NET_NF_CONNTRACK_TCP_BE_LIBERAL=18, NET_NF_CONNTRACK_TCP_MAX_RETRANS=19, NET_NF_CONNTRACK_SCTP_TIMEOUT_CLOSED=20, NET_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_WAIT=21, NET_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_ECHOED=22, NET_NF_CONNTRACK_SCTP_TIMEOUT_ESTABLISHED=23, NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_SENT=24, NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD=25, NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT=26, NET_NF_CONNTRACK_COUNT=27, NET_NF_CONNTRACK_ICMPV6_TIMEOUT=28, NET_NF_CONNTRACK_FRAG6_TIMEOUT=29, NET_NF_CONNTRACK_FRAG6_LOW_THRESH=30, NET_NF_CONNTRACK_FRAG6_HIGH_THRESH=31, NET_NF_CONNTRACK_CHECKSUM=32, }; /* /proc/sys/net/ipv4 */ enum { /* v2.0 compatibile variables */ NET_IPV4_FORWARD=8, NET_IPV4_DYNADDR=9, NET_IPV4_CONF=16, NET_IPV4_NEIGH=17, NET_IPV4_ROUTE=18, NET_IPV4_FIB_HASH=19, NET_IPV4_NETFILTER=20, NET_IPV4_TCP_TIMESTAMPS=33, NET_IPV4_TCP_WINDOW_SCALING=34, NET_IPV4_TCP_SACK=35, NET_IPV4_TCP_RETRANS_COLLAPSE=36, NET_IPV4_DEFAULT_TTL=37, NET_IPV4_AUTOCONFIG=38, NET_IPV4_NO_PMTU_DISC=39, NET_IPV4_TCP_SYN_RETRIES=40, NET_IPV4_IPFRAG_HIGH_THRESH=41, NET_IPV4_IPFRAG_LOW_THRESH=42, NET_IPV4_IPFRAG_TIME=43, NET_IPV4_TCP_MAX_KA_PROBES=44, NET_IPV4_TCP_KEEPALIVE_TIME=45, NET_IPV4_TCP_KEEPALIVE_PROBES=46, NET_IPV4_TCP_RETRIES1=47, NET_IPV4_TCP_RETRIES2=48, NET_IPV4_TCP_FIN_TIMEOUT=49, NET_IPV4_IP_MASQ_DEBUG=50, NET_TCP_SYNCOOKIES=51, NET_TCP_STDURG=52, NET_TCP_RFC1337=53, NET_TCP_SYN_TAILDROP=54, NET_TCP_MAX_SYN_BACKLOG=55, NET_IPV4_LOCAL_PORT_RANGE=56, NET_IPV4_ICMP_ECHO_IGNORE_ALL=57, NET_IPV4_ICMP_ECHO_IGNORE_BROADCASTS=58, NET_IPV4_ICMP_SOURCEQUENCH_RATE=59, NET_IPV4_ICMP_DESTUNREACH_RATE=60, NET_IPV4_ICMP_TIMEEXCEED_RATE=61, NET_IPV4_ICMP_PARAMPROB_RATE=62, NET_IPV4_ICMP_ECHOREPLY_RATE=63, NET_IPV4_ICMP_IGNORE_BOGUS_ERROR_RESPONSES=64, NET_IPV4_IGMP_MAX_MEMBERSHIPS=65, NET_TCP_TW_RECYCLE=66, NET_IPV4_ALWAYS_DEFRAG=67, NET_IPV4_TCP_KEEPALIVE_INTVL=68, NET_IPV4_INET_PEER_THRESHOLD=69, NET_IPV4_INET_PEER_MINTTL=70, NET_IPV4_INET_PEER_MAXTTL=71, NET_IPV4_INET_PEER_GC_MINTIME=72, NET_IPV4_INET_PEER_GC_MAXTIME=73, NET_TCP_ORPHAN_RETRIES=74, NET_TCP_ABORT_ON_OVERFLOW=75, NET_TCP_SYNACK_RETRIES=76, NET_TCP_MAX_ORPHANS=77, NET_TCP_MAX_TW_BUCKETS=78, NET_TCP_FACK=79, NET_TCP_REORDERING=80, NET_TCP_ECN=81, NET_TCP_DSACK=82, NET_TCP_MEM=83, NET_TCP_WMEM=84, NET_TCP_RMEM=85, NET_TCP_APP_WIN=86, NET_TCP_ADV_WIN_SCALE=87, NET_IPV4_NONLOCAL_BIND=88, NET_IPV4_ICMP_RATELIMIT=89, NET_IPV4_ICMP_RATEMASK=90, NET_TCP_TW_REUSE=91, NET_TCP_FRTO=92, NET_TCP_LOW_LATENCY=93, NET_IPV4_IPFRAG_SECRET_INTERVAL=94, NET_IPV4_IGMP_MAX_MSF=96, NET_TCP_NO_METRICS_SAVE=97, NET_TCP_DEFAULT_WIN_SCALE=105, NET_TCP_MODERATE_RCVBUF=106, NET_TCP_TSO_WIN_DIVISOR=107, NET_TCP_BIC_BETA=108, NET_IPV4_ICMP_ERRORS_USE_INBOUND_IFADDR=109, NET_TCP_CONG_CONTROL=110, NET_TCP_ABC=111, NET_IPV4_IPFRAG_MAX_DIST=112, NET_TCP_MTU_PROBING=113, NET_TCP_BASE_MSS=114, NET_IPV4_TCP_WORKAROUND_SIGNED_WINDOWS=115, NET_TCP_DMA_COPYBREAK=116, NET_TCP_SLOW_START_AFTER_IDLE=117, NET_CIPSOV4_CACHE_ENABLE=118, NET_CIPSOV4_CACHE_BUCKET_SIZE=119, NET_CIPSOV4_RBM_OPTFMT=120, NET_CIPSOV4_RBM_STRICTVALID=121, NET_TCP_AVAIL_CONG_CONTROL=122, NET_TCP_ALLOWED_CONG_CONTROL=123, NET_TCP_MAX_SSTHRESH=124, NET_TCP_FRTO_RESPONSE=125, }; enum { NET_IPV4_ROUTE_FLUSH=1, NET_IPV4_ROUTE_MIN_DELAY=2, /* obsolete since 2.6.25 */ NET_IPV4_ROUTE_MAX_DELAY=3, /* obsolete since 2.6.25 */ NET_IPV4_ROUTE_GC_THRESH=4, NET_IPV4_ROUTE_MAX_SIZE=5, NET_IPV4_ROUTE_GC_MIN_INTERVAL=6, NET_IPV4_ROUTE_GC_TIMEOUT=7, NET_IPV4_ROUTE_GC_INTERVAL=8, NET_IPV4_ROUTE_REDIRECT_LOAD=9, NET_IPV4_ROUTE_REDIRECT_NUMBER=10, NET_IPV4_ROUTE_REDIRECT_SILENCE=11, NET_IPV4_ROUTE_ERROR_COST=12, NET_IPV4_ROUTE_ERROR_BURST=13, NET_IPV4_ROUTE_GC_ELASTICITY=14, NET_IPV4_ROUTE_MTU_EXPIRES=15, NET_IPV4_ROUTE_MIN_PMTU=16, NET_IPV4_ROUTE_MIN_ADVMSS=17, NET_IPV4_ROUTE_SECRET_INTERVAL=18, NET_IPV4_ROUTE_GC_MIN_INTERVAL_MS=19, }; enum { NET_PROTO_CONF_ALL=-2, NET_PROTO_CONF_DEFAULT=-3 /* And device ifindices ... */ }; enum { NET_IPV4_CONF_FORWARDING=1, NET_IPV4_CONF_MC_FORWARDING=2, NET_IPV4_CONF_PROXY_ARP=3, NET_IPV4_CONF_ACCEPT_REDIRECTS=4, NET_IPV4_CONF_SECURE_REDIRECTS=5, NET_IPV4_CONF_SEND_REDIRECTS=6, NET_IPV4_CONF_SHARED_MEDIA=7, NET_IPV4_CONF_RP_FILTER=8, NET_IPV4_CONF_ACCEPT_SOURCE_ROUTE=9, NET_IPV4_CONF_BOOTP_RELAY=10, NET_IPV4_CONF_LOG_MARTIANS=11, NET_IPV4_CONF_TAG=12, NET_IPV4_CONF_ARPFILTER=13, NET_IPV4_CONF_MEDIUM_ID=14, NET_IPV4_CONF_NOXFRM=15, NET_IPV4_CONF_NOPOLICY=16, NET_IPV4_CONF_FORCE_IGMP_VERSION=17, NET_IPV4_CONF_ARP_ANNOUNCE=18, NET_IPV4_CONF_ARP_IGNORE=19, NET_IPV4_CONF_PROMOTE_SECONDARIES=20, NET_IPV4_CONF_ARP_ACCEPT=21, __NET_IPV4_CONF_MAX }; /* /proc/sys/net/ipv4/netfilter */ enum { NET_IPV4_NF_CONNTRACK_MAX=1, NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT=2, NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV=3, NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED=4, NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT=5, NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT=6, NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK=7, NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT=8, NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE=9, NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT=10, NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT_STREAM=11, NET_IPV4_NF_CONNTRACK_ICMP_TIMEOUT=12, NET_IPV4_NF_CONNTRACK_GENERIC_TIMEOUT=13, NET_IPV4_NF_CONNTRACK_BUCKETS=14, NET_IPV4_NF_CONNTRACK_LOG_INVALID=15, NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS=16, NET_IPV4_NF_CONNTRACK_TCP_LOOSE=17, NET_IPV4_NF_CONNTRACK_TCP_BE_LIBERAL=18, NET_IPV4_NF_CONNTRACK_TCP_MAX_RETRANS=19, NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_CLOSED=20, NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_WAIT=21, NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_ECHOED=22, NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_ESTABLISHED=23, NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_SENT=24, NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD=25, NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT=26, NET_IPV4_NF_CONNTRACK_COUNT=27, NET_IPV4_NF_CONNTRACK_CHECKSUM=28, }; /* /proc/sys/net/ipv6 */ enum { NET_IPV6_CONF=16, NET_IPV6_NEIGH=17, NET_IPV6_ROUTE=18, NET_IPV6_ICMP=19, NET_IPV6_BINDV6ONLY=20, NET_IPV6_IP6FRAG_HIGH_THRESH=21, NET_IPV6_IP6FRAG_LOW_THRESH=22, NET_IPV6_IP6FRAG_TIME=23, NET_IPV6_IP6FRAG_SECRET_INTERVAL=24, NET_IPV6_MLD_MAX_MSF=25, }; enum { NET_IPV6_ROUTE_FLUSH=1, NET_IPV6_ROUTE_GC_THRESH=2, NET_IPV6_ROUTE_MAX_SIZE=3, NET_IPV6_ROUTE_GC_MIN_INTERVAL=4, NET_IPV6_ROUTE_GC_TIMEOUT=5, NET_IPV6_ROUTE_GC_INTERVAL=6, NET_IPV6_ROUTE_GC_ELASTICITY=7, NET_IPV6_ROUTE_MTU_EXPIRES=8, NET_IPV6_ROUTE_MIN_ADVMSS=9, NET_IPV6_ROUTE_GC_MIN_INTERVAL_MS=10 }; enum { NET_IPV6_FORWARDING=1, NET_IPV6_HOP_LIMIT=2, NET_IPV6_MTU=3, NET_IPV6_ACCEPT_RA=4, NET_IPV6_ACCEPT_REDIRECTS=5, NET_IPV6_AUTOCONF=6, NET_IPV6_DAD_TRANSMITS=7, NET_IPV6_RTR_SOLICITS=8, NET_IPV6_RTR_SOLICIT_INTERVAL=9, NET_IPV6_RTR_SOLICIT_DELAY=10, NET_IPV6_USE_TEMPADDR=11, NET_IPV6_TEMP_VALID_LFT=12, NET_IPV6_TEMP_PREFERED_LFT=13, NET_IPV6_REGEN_MAX_RETRY=14, NET_IPV6_MAX_DESYNC_FACTOR=15, NET_IPV6_MAX_ADDRESSES=16, NET_IPV6_FORCE_MLD_VERSION=17, NET_IPV6_ACCEPT_RA_DEFRTR=18, NET_IPV6_ACCEPT_RA_PINFO=19, NET_IPV6_ACCEPT_RA_RTR_PREF=20, NET_IPV6_RTR_PROBE_INTERVAL=21, NET_IPV6_ACCEPT_RA_RT_INFO_MAX_PLEN=22, NET_IPV6_PROXY_NDP=23, NET_IPV6_ACCEPT_SOURCE_ROUTE=25, __NET_IPV6_MAX }; /* /proc/sys/net/ipv6/icmp */ enum { NET_IPV6_ICMP_RATELIMIT=1 }; /* /proc/sys/net//neigh/ */ enum { NET_NEIGH_MCAST_SOLICIT=1, NET_NEIGH_UCAST_SOLICIT=2, NET_NEIGH_APP_SOLICIT=3, NET_NEIGH_RETRANS_TIME=4, NET_NEIGH_REACHABLE_TIME=5, NET_NEIGH_DELAY_PROBE_TIME=6, NET_NEIGH_GC_STALE_TIME=7, NET_NEIGH_UNRES_QLEN=8, NET_NEIGH_PROXY_QLEN=9, NET_NEIGH_ANYCAST_DELAY=10, NET_NEIGH_PROXY_DELAY=11, NET_NEIGH_LOCKTIME=12, NET_NEIGH_GC_INTERVAL=13, NET_NEIGH_GC_THRESH1=14, NET_NEIGH_GC_THRESH2=15, NET_NEIGH_GC_THRESH3=16, NET_NEIGH_RETRANS_TIME_MS=17, NET_NEIGH_REACHABLE_TIME_MS=18, __NET_NEIGH_MAX }; /* /proc/sys/net/dccp */ enum { NET_DCCP_DEFAULT=1, }; /* /proc/sys/net/ipx */ enum { NET_IPX_PPROP_BROADCASTING=1, NET_IPX_FORWARDING=2 }; /* /proc/sys/net/llc */ enum { NET_LLC2=1, NET_LLC_STATION=2, }; /* /proc/sys/net/llc/llc2 */ enum { NET_LLC2_TIMEOUT=1, }; /* /proc/sys/net/llc/station */ enum { NET_LLC_STATION_ACK_TIMEOUT=1, }; /* /proc/sys/net/llc/llc2/timeout */ enum { NET_LLC2_ACK_TIMEOUT=1, NET_LLC2_P_TIMEOUT=2, NET_LLC2_REJ_TIMEOUT=3, NET_LLC2_BUSY_TIMEOUT=4, }; /* /proc/sys/net/appletalk */ enum { NET_ATALK_AARP_EXPIRY_TIME=1, NET_ATALK_AARP_TICK_TIME=2, NET_ATALK_AARP_RETRANSMIT_LIMIT=3, NET_ATALK_AARP_RESOLVE_TIME=4 }; /* /proc/sys/net/netrom */ enum { NET_NETROM_DEFAULT_PATH_QUALITY=1, NET_NETROM_OBSOLESCENCE_COUNT_INITIALISER=2, NET_NETROM_NETWORK_TTL_INITIALISER=3, NET_NETROM_TRANSPORT_TIMEOUT=4, NET_NETROM_TRANSPORT_MAXIMUM_TRIES=5, NET_NETROM_TRANSPORT_ACKNOWLEDGE_DELAY=6, NET_NETROM_TRANSPORT_BUSY_DELAY=7, NET_NETROM_TRANSPORT_REQUESTED_WINDOW_SIZE=8, NET_NETROM_TRANSPORT_NO_ACTIVITY_TIMEOUT=9, NET_NETROM_ROUTING_CONTROL=10, NET_NETROM_LINK_FAILS_COUNT=11, NET_NETROM_RESET=12 }; /* /proc/sys/net/ax25 */ enum { NET_AX25_IP_DEFAULT_MODE=1, NET_AX25_DEFAULT_MODE=2, NET_AX25_BACKOFF_TYPE=3, NET_AX25_CONNECT_MODE=4, NET_AX25_STANDARD_WINDOW=5, NET_AX25_EXTENDED_WINDOW=6, NET_AX25_T1_TIMEOUT=7, NET_AX25_T2_TIMEOUT=8, NET_AX25_T3_TIMEOUT=9, NET_AX25_IDLE_TIMEOUT=10, NET_AX25_N2=11, NET_AX25_PACLEN=12, NET_AX25_PROTOCOL=13, NET_AX25_DAMA_SLAVE_TIMEOUT=14 }; /* /proc/sys/net/rose */ enum { NET_ROSE_RESTART_REQUEST_TIMEOUT=1, NET_ROSE_CALL_REQUEST_TIMEOUT=2, NET_ROSE_RESET_REQUEST_TIMEOUT=3, NET_ROSE_CLEAR_REQUEST_TIMEOUT=4, NET_ROSE_ACK_HOLD_BACK_TIMEOUT=5, NET_ROSE_ROUTING_CONTROL=6, NET_ROSE_LINK_FAIL_TIMEOUT=7, NET_ROSE_MAX_VCS=8, NET_ROSE_WINDOW_SIZE=9, NET_ROSE_NO_ACTIVITY_TIMEOUT=10 }; /* /proc/sys/net/x25 */ enum { NET_X25_RESTART_REQUEST_TIMEOUT=1, NET_X25_CALL_REQUEST_TIMEOUT=2, NET_X25_RESET_REQUEST_TIMEOUT=3, NET_X25_CLEAR_REQUEST_TIMEOUT=4, NET_X25_ACK_HOLD_BACK_TIMEOUT=5, NET_X25_FORWARD=6 }; /* /proc/sys/net/token-ring */ enum { NET_TR_RIF_TIMEOUT=1 }; /* /proc/sys/net/decnet/ */ enum { NET_DECNET_NODE_TYPE = 1, NET_DECNET_NODE_ADDRESS = 2, NET_DECNET_NODE_NAME = 3, NET_DECNET_DEFAULT_DEVICE = 4, NET_DECNET_TIME_WAIT = 5, NET_DECNET_DN_COUNT = 6, NET_DECNET_DI_COUNT = 7, NET_DECNET_DR_COUNT = 8, NET_DECNET_DST_GC_INTERVAL = 9, NET_DECNET_CONF = 10, NET_DECNET_NO_FC_MAX_CWND = 11, NET_DECNET_MEM = 12, NET_DECNET_RMEM = 13, NET_DECNET_WMEM = 14, NET_DECNET_DEBUG_LEVEL = 255 }; /* /proc/sys/net/decnet/conf/ */ enum { NET_DECNET_CONF_LOOPBACK = -2, NET_DECNET_CONF_DDCMP = -3, NET_DECNET_CONF_PPP = -4, NET_DECNET_CONF_X25 = -5, NET_DECNET_CONF_GRE = -6, NET_DECNET_CONF_ETHER = -7 /* ... and ifindex of devices */ }; /* /proc/sys/net/decnet/conf// */ enum { NET_DECNET_CONF_DEV_PRIORITY = 1, NET_DECNET_CONF_DEV_T1 = 2, NET_DECNET_CONF_DEV_T2 = 3, NET_DECNET_CONF_DEV_T3 = 4, NET_DECNET_CONF_DEV_FORWARDING = 5, NET_DECNET_CONF_DEV_BLKSIZE = 6, NET_DECNET_CONF_DEV_STATE = 7 }; /* /proc/sys/net/sctp */ enum { NET_SCTP_RTO_INITIAL = 1, NET_SCTP_RTO_MIN = 2, NET_SCTP_RTO_MAX = 3, NET_SCTP_RTO_ALPHA = 4, NET_SCTP_RTO_BETA = 5, NET_SCTP_VALID_COOKIE_LIFE = 6, NET_SCTP_ASSOCIATION_MAX_RETRANS = 7, NET_SCTP_PATH_MAX_RETRANS = 8, NET_SCTP_MAX_INIT_RETRANSMITS = 9, NET_SCTP_HB_INTERVAL = 10, NET_SCTP_PRESERVE_ENABLE = 11, NET_SCTP_MAX_BURST = 12, NET_SCTP_ADDIP_ENABLE = 13, NET_SCTP_PRSCTP_ENABLE = 14, NET_SCTP_SNDBUF_POLICY = 15, NET_SCTP_SACK_TIMEOUT = 16, NET_SCTP_RCVBUF_POLICY = 17, }; /* /proc/sys/net/bridge */ enum { NET_BRIDGE_NF_CALL_ARPTABLES = 1, NET_BRIDGE_NF_CALL_IPTABLES = 2, NET_BRIDGE_NF_CALL_IP6TABLES = 3, NET_BRIDGE_NF_FILTER_VLAN_TAGGED = 4, NET_BRIDGE_NF_FILTER_PPPOE_TAGGED = 5, }; /* proc/sys/net/irda */ enum { NET_IRDA_DISCOVERY=1, NET_IRDA_DEVNAME=2, NET_IRDA_DEBUG=3, NET_IRDA_FAST_POLL=4, NET_IRDA_DISCOVERY_SLOTS=5, NET_IRDA_DISCOVERY_TIMEOUT=6, NET_IRDA_SLOT_TIMEOUT=7, NET_IRDA_MAX_BAUD_RATE=8, NET_IRDA_MIN_TX_TURN_TIME=9, NET_IRDA_MAX_TX_DATA_SIZE=10, NET_IRDA_MAX_TX_WINDOW=11, NET_IRDA_MAX_NOREPLY_TIME=12, NET_IRDA_WARN_NOREPLY_TIME=13, NET_IRDA_LAP_KEEPALIVE_TIME=14, }; /* CTL_FS names: */ enum { FS_NRINODE=1, /* int:current number of allocated inodes */ FS_STATINODE=2, FS_MAXINODE=3, /* int:maximum number of inodes that can be allocated */ FS_NRDQUOT=4, /* int:current number of allocated dquots */ FS_MAXDQUOT=5, /* int:maximum number of dquots that can be allocated */ FS_NRFILE=6, /* int:current number of allocated filedescriptors */ FS_MAXFILE=7, /* int:maximum number of filedescriptors that can be allocated */ FS_DENTRY=8, FS_NRSUPER=9, /* int:current number of allocated super_blocks */ FS_MAXSUPER=10, /* int:maximum number of super_blocks that can be allocated */ FS_OVERFLOWUID=11, /* int: overflow UID */ FS_OVERFLOWGID=12, /* int: overflow GID */ FS_LEASES=13, /* int: leases enabled */ FS_DIR_NOTIFY=14, /* int: directory notification enabled */ FS_LEASE_TIME=15, /* int: maximum time to wait for a lease break */ FS_DQSTATS=16, /* disc quota usage statistics and control */ FS_XFS=17, /* struct: control xfs parameters */ FS_AIO_NR=18, /* current system-wide number of aio requests */ FS_AIO_MAX_NR=19, /* system-wide maximum number of aio requests */ FS_INOTIFY=20, /* inotify submenu */ FS_OCFS2=988, /* ocfs2 */ }; /* /proc/sys/fs/quota/ */ enum { FS_DQ_LOOKUPS = 1, FS_DQ_DROPS = 2, FS_DQ_READS = 3, FS_DQ_WRITES = 4, FS_DQ_CACHE_HITS = 5, FS_DQ_ALLOCATED = 6, FS_DQ_FREE = 7, FS_DQ_SYNCS = 8, FS_DQ_WARNINGS = 9, }; /* CTL_DEBUG names: */ /* CTL_DEV names: */ enum { DEV_CDROM=1, DEV_HWMON=2, DEV_PARPORT=3, DEV_RAID=4, DEV_MAC_HID=5, DEV_SCSI=6, DEV_IPMI=7, }; /* /proc/sys/dev/cdrom */ enum { DEV_CDROM_INFO=1, DEV_CDROM_AUTOCLOSE=2, DEV_CDROM_AUTOEJECT=3, DEV_CDROM_DEBUG=4, DEV_CDROM_LOCK=5, DEV_CDROM_CHECK_MEDIA=6 }; /* /proc/sys/dev/parport */ enum { DEV_PARPORT_DEFAULT=-3 }; /* /proc/sys/dev/raid */ enum { DEV_RAID_SPEED_LIMIT_MIN=1, DEV_RAID_SPEED_LIMIT_MAX=2 }; /* /proc/sys/dev/parport/default */ enum { DEV_PARPORT_DEFAULT_TIMESLICE=1, DEV_PARPORT_DEFAULT_SPINTIME=2 }; /* /proc/sys/dev/parport/parport n */ enum { DEV_PARPORT_SPINTIME=1, DEV_PARPORT_BASE_ADDR=2, DEV_PARPORT_IRQ=3, DEV_PARPORT_DMA=4, DEV_PARPORT_MODES=5, DEV_PARPORT_DEVICES=6, DEV_PARPORT_AUTOPROBE=16 }; /* /proc/sys/dev/parport/parport n/devices/ */ enum { DEV_PARPORT_DEVICES_ACTIVE=-3, }; /* /proc/sys/dev/parport/parport n/devices/device n */ enum { DEV_PARPORT_DEVICE_TIMESLICE=1, }; /* /proc/sys/dev/mac_hid */ enum { DEV_MAC_HID_KEYBOARD_SENDS_LINUX_KEYCODES=1, DEV_MAC_HID_KEYBOARD_LOCK_KEYCODES=2, DEV_MAC_HID_MOUSE_BUTTON_EMULATION=3, DEV_MAC_HID_MOUSE_BUTTON2_KEYCODE=4, DEV_MAC_HID_MOUSE_BUTTON3_KEYCODE=5, DEV_MAC_HID_ADB_MOUSE_SENDS_KEYCODES=6 }; /* /proc/sys/dev/scsi */ enum { DEV_SCSI_LOGGING_LEVEL=1, }; /* /proc/sys/dev/ipmi */ enum { DEV_IPMI_POWEROFF_POWERCYCLE=1, }; /* /proc/sys/abi */ enum { ABI_DEFHANDLER_COFF=1, /* default handler for coff binaries */ ABI_DEFHANDLER_ELF=2, /* default handler for ELF binaries */ ABI_DEFHANDLER_LCALL7=3,/* default handler for procs using lcall7 */ ABI_DEFHANDLER_LIBCSO=4,/* default handler for an libc.so ELF interp */ ABI_TRACE=5, /* tracing flags */ ABI_FAKE_UTSNAME=6, /* fake target utsname information */ }; #ifdef __KERNEL__ #include /* For the /proc/sys support */ struct ctl_table; struct nsproxy; struct ctl_table_root; struct ctl_table_set { struct list_head list; struct ctl_table_set *parent; int (*is_seen)(struct ctl_table_set *); }; extern void setup_sysctl_set(struct ctl_table_set *p, struct ctl_table_set *parent, int (*is_seen)(struct ctl_table_set *)); struct ctl_table_header; extern void sysctl_head_get(struct ctl_table_header *); extern void sysctl_head_put(struct ctl_table_header *); extern int sysctl_is_seen(struct ctl_table_header *); extern struct ctl_table_header *sysctl_head_grab(struct ctl_table_header *); extern struct ctl_table_header *sysctl_head_next(struct ctl_table_header *prev); extern struct ctl_table_header *__sysctl_head_next(struct nsproxy *namespaces, struct ctl_table_header *prev); extern void sysctl_head_finish(struct ctl_table_header *prev); extern int sysctl_perm(struct ctl_table_root *root, struct ctl_table *table, int op); typedef struct ctl_table ctl_table; typedef int ctl_handler (struct ctl_table *table, void __user *oldval, size_t __user *oldlenp, void __user *newval, size_t newlen); typedef int proc_handler (struct ctl_table *ctl, int write, struct file * filp, void __user *buffer, size_t *lenp, loff_t *ppos); extern int proc_dostring(struct ctl_table *, int, struct file *, void __user *, size_t *, loff_t *); extern int proc_dointvec(struct ctl_table *, int, struct file *, void __user *, size_t *, loff_t *); extern int proc_dointvec_minmax(struct ctl_table *, int, struct file *, void __user *, size_t *, loff_t *); extern int proc_dointvec_jiffies(struct ctl_table *, int, struct file *, void __user *, size_t *, loff_t *); extern int proc_dointvec_userhz_jiffies(struct ctl_table *, int, struct file *, void __user *, size_t *, loff_t *); extern int proc_dointvec_ms_jiffies(struct ctl_table *, int, struct file *, void __user *, size_t *, loff_t *); extern int proc_doulongvec_minmax(struct ctl_table *, int, struct file *, void __user *, size_t *, loff_t *); extern int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int, struct file *, void __user *, size_t *, loff_t *); extern int do_sysctl (int __user *name, int nlen, void __user *oldval, size_t __user *oldlenp, void __user *newval, size_t newlen); extern ctl_handler sysctl_data; extern ctl_handler sysctl_string; extern ctl_handler sysctl_intvec; extern ctl_handler sysctl_jiffies; extern ctl_handler sysctl_ms_jiffies; /* * Register a set of sysctl names by calling register_sysctl_table * with an initialised array of struct ctl_table's. An entry with zero * ctl_name and NULL procname terminates the table. table->de will be * set up by the registration and need not be initialised in advance. * * sysctl names can be mirrored automatically under /proc/sys. The * procname supplied controls /proc naming. * * The table's mode will be honoured both for sys_sysctl(2) and * proc-fs access. * * Leaf nodes in the sysctl tree will be represented by a single file * under /proc; non-leaf nodes will be represented by directories. A * null procname disables /proc mirroring at this node. * * sysctl entries with a zero ctl_name will not be available through * the binary sysctl interface. * * sysctl(2) can automatically manage read and write requests through * the sysctl table. The data and maxlen fields of the ctl_table * struct enable minimal validation of the values being written to be * performed, and the mode field allows minimal authentication. * * More sophisticated management can be enabled by the provision of a * strategy routine with the table entry. This will be called before * any automatic read or write of the data is performed. * * The strategy routine may return: * <0: Error occurred (error is passed to user process) * 0: OK - proceed with automatic read or write. * >0: OK - read or write has been done by the strategy routine, so * return immediately. * * There must be a proc_handler routine for any terminal nodes * mirrored under /proc/sys (non-terminals are handled by a built-in * directory handler). Several default handlers are available to * cover common cases. */ /* A sysctl table is an array of struct ctl_table: */ struct ctl_table { int ctl_name; /* Binary ID */ const char *procname; /* Text ID for /proc/sys, or zero */ void *data; int maxlen; mode_t mode; struct ctl_table *child; struct ctl_table *parent; /* Automatically set */ proc_handler *proc_handler; /* Callback for text formatting */ ctl_handler *strategy; /* Callback function for all r/w */ void *extra1; void *extra2; }; struct ctl_table_root { struct list_head root_list; struct ctl_table_set default_set; struct ctl_table_set *(*lookup)(struct ctl_table_root *root, struct nsproxy *namespaces); int (*permissions)(struct ctl_table_root *root, struct nsproxy *namespaces, struct ctl_table *table); }; /* struct ctl_table_header is used to maintain dynamic lists of struct ctl_table trees. */ struct ctl_table_header { struct ctl_table *ctl_table; struct list_head ctl_entry; int used; int count; struct completion *unregistering; struct ctl_table *ctl_table_arg; struct ctl_table_root *root; struct ctl_table_set *set; struct ctl_table *attached_by; struct ctl_table *attached_to; struct ctl_table_header *parent; }; /* struct ctl_path describes where in the hierarchy a table is added */ struct ctl_path { const char *procname; int ctl_name; }; void register_sysctl_root(struct ctl_table_root *root); struct ctl_table_header *__register_sysctl_paths( struct ctl_table_root *root, struct nsproxy *namespaces, const struct ctl_path *path, struct ctl_table *table); struct ctl_table_header *register_sysctl_table(struct ctl_table * table); struct ctl_table_header *register_sysctl_paths(const struct ctl_path *path, struct ctl_table *table); void unregister_sysctl_table(struct ctl_table_header * table); int sysctl_check_table(struct nsproxy *namespaces, struct ctl_table *table); #endif /* __KERNEL__ */ #endif /* _LINUX_SYSCTL_H */ id='n832' href='#n832'>832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 
/*
 *	pci.h
 *
 *	PCI defines and function prototypes
 *	Copyright 1994, Drew Eckhardt
 *	Copyright 1997--1999 Martin Mares <mj@ucw.cz>
 *
 *	For more information, please consult the following manuals (look at
 *	http://www.pcisig.com/ for how to get them):
 *
 *	PCI BIOS Specification
 *	PCI Local Bus Specification
 *	PCI to PCI Bridge Specification
 *	PCI System Design Guide
 */

#ifndef LINUX_PCI_H
#define LINUX_PCI_H

#include <linux/pci_regs.h>	/* The pci register defines */

/*
 * The PCI interface treats multi-function devices as independent
 * devices.  The slot/function address of each device is encoded
 * in a single byte as follows:
 *
 *	7:3 = slot
 *	2:0 = function
 */
#define PCI_DEVFN(slot, func)	((((slot) & 0x1f) << 3) | ((func) & 0x07))
#define PCI_SLOT(devfn)		(((devfn) >> 3) & 0x1f)
#define PCI_FUNC(devfn)		((devfn) & 0x07)

/* Ioctls for /proc/bus/pci/X/Y nodes. */
#define PCIIOC_BASE		('P' << 24 | 'C' << 16 | 'I' << 8)
#define PCIIOC_CONTROLLER	(PCIIOC_BASE | 0x00)	/* Get controller for PCI device. */
#define PCIIOC_MMAP_IS_IO	(PCIIOC_BASE | 0x01)	/* Set mmap state to I/O space. */
#define PCIIOC_MMAP_IS_MEM	(PCIIOC_BASE | 0x02)	/* Set mmap state to MEM space. */
#define PCIIOC_WRITE_COMBINE	(PCIIOC_BASE | 0x03)	/* Enable/disable write-combining. */

#ifdef __KERNEL__

#include <linux/mod_devicetable.h>

#include <linux/types.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/list.h>
#include <linux/compiler.h>
#include <linux/errno.h>
#include <linux/kobject.h>
#include <asm/atomic.h>
#include <linux/device.h>
#include <linux/io.h>

/* Include the ID list */
#include <linux/pci_ids.h>

/* pci_slot represents a physical slot */
struct pci_slot {
	struct pci_bus *bus;		/* The bus this slot is on */
	struct list_head list;		/* node in list of slots on this bus */
	struct hotplug_slot *hotplug;	/* Hotplug info (migrate over time) */
	unsigned char number;		/* PCI_SLOT(pci_dev->devfn) */
	struct kobject kobj;
};

static inline const char *pci_slot_name(const struct pci_slot *slot)
{
	return kobject_name(&slot->kobj);
}

/* File state for mmap()s on /proc/bus/pci/X/Y */
enum pci_mmap_state {
	pci_mmap_io,
	pci_mmap_mem
};

/* This defines the direction arg to the DMA mapping routines. */
#define PCI_DMA_BIDIRECTIONAL	0
#define PCI_DMA_TODEVICE	1
#define PCI_DMA_FROMDEVICE	2
#define PCI_DMA_NONE		3

/*
 *  For PCI devices, the region numbers are assigned this way:
 */
enum {
	/* #0-5: standard PCI resources */
	PCI_STD_RESOURCES,
	PCI_STD_RESOURCE_END = 5,

	/* #6: expansion ROM resource */
	PCI_ROM_RESOURCE,

	/* resources assigned to buses behind the bridge */
#define PCI_BRIDGE_RESOURCE_NUM 4

	PCI_BRIDGE_RESOURCES,
	PCI_BRIDGE_RESOURCE_END = PCI_BRIDGE_RESOURCES +
				  PCI_BRIDGE_RESOURCE_NUM - 1,

	/* total resources associated with a PCI device */
	PCI_NUM_RESOURCES,

	/* preserve this for compatibility */
	DEVICE_COUNT_RESOURCE
};

typedef int __bitwise pci_power_t;

#define PCI_D0		((pci_power_t __force) 0)
#define PCI_D1		((pci_power_t __force) 1)
#define PCI_D2		((pci_power_t __force) 2)
#define PCI_D3hot	((pci_power_t __force) 3)
#define PCI_D3cold	((pci_power_t __force) 4)
#define PCI_UNKNOWN	((pci_power_t __force) 5)
#define PCI_POWER_ERROR	((pci_power_t __force) -1)

#define PCI_PM_D2_DELAY	200
#define PCI_PM_D3_WAIT	10
#define PCI_PM_BUS_WAIT	50

/** The pci_channel state describes connectivity between the CPU and
 *  the pci device.  If some PCI bus between here and the pci device
 *  has crashed or locked up, this info is reflected here.
 */
typedef unsigned int __bitwise pci_channel_state_t;

enum pci_channel_state {
	/* I/O channel is in normal state */
	pci_channel_io_normal = (__force pci_channel_state_t) 1,

	/* I/O to channel is blocked */
	pci_channel_io_frozen = (__force pci_channel_state_t) 2,

	/* PCI card is dead */
	pci_channel_io_perm_failure = (__force pci_channel_state_t) 3,
};

typedef unsigned int __bitwise pcie_reset_state_t;

enum pcie_reset_state {
	/* Reset is NOT asserted (Use to deassert reset) */
	pcie_deassert_reset = (__force pcie_reset_state_t) 1,

	/* Use #PERST to reset PCI-E device */
	pcie_warm_reset = (__force pcie_reset_state_t) 2,

	/* Use PCI-E Hot Reset to reset device */
	pcie_hot_reset = (__force pcie_reset_state_t) 3
};

typedef unsigned short __bitwise pci_dev_flags_t;
enum pci_dev_flags {
	/* INTX_DISABLE in PCI_COMMAND register disables MSI
	 * generation too.
	 */
	PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG = (__force pci_dev_flags_t) 1,
	/* Device configuration is irrevocably lost if disabled into D3 */
	PCI_DEV_FLAGS_NO_D3 = (__force pci_dev_flags_t) 2,
};

enum pci_irq_reroute_variant {
	INTEL_IRQ_REROUTE_VARIANT = 1,
	MAX_IRQ_REROUTE_VARIANTS = 3
};

typedef unsigned short __bitwise pci_bus_flags_t;
enum pci_bus_flags {
	PCI_BUS_FLAGS_NO_MSI   = (__force pci_bus_flags_t) 1,
	PCI_BUS_FLAGS_NO_MMRBC = (__force pci_bus_flags_t) 2,
};

struct pci_cap_saved_state {
	struct hlist_node next;
	char cap_nr;
	u32 data[0];
};

struct pcie_link_state;
struct pci_vpd;

/*
 * The pci_dev structure is used to describe PCI devices.
 */
struct pci_dev {
	struct list_head bus_list;	/* node in per-bus list */
	struct pci_bus	*bus;		/* bus this device is on */
	struct pci_bus	*subordinate;	/* bus this device bridges to */

	void		*sysdata;	/* hook for sys-specific extension */
	struct proc_dir_entry *procent;	/* device entry in /proc/bus/pci */
	struct pci_slot	*slot;		/* Physical slot this device is in */

	unsigned int	devfn;		/* encoded device & function index */
	unsigned short	vendor;
	unsigned short	device;
	unsigned short	subsystem_vendor;
	unsigned short	subsystem_device;
	unsigned int	class;		/* 3 bytes: (base,sub,prog-if) */
	u8		revision;	/* PCI revision, low byte of class word */
	u8		hdr_type;	/* PCI header type (`multi' flag masked out) */
	u8		pcie_type;	/* PCI-E device/port type */
	u8		rom_base_reg;	/* which config register controls the ROM */
	u8		pin;  		/* which interrupt pin this device uses */

	struct pci_driver *driver;	/* which driver has allocated this device */
	u64		dma_mask;	/* Mask of the bits of bus address this
					   device implements.  Normally this is
					   0xffffffff.  You only need to change
					   this if your device has broken DMA
					   or supports 64-bit transfers.  */

	struct device_dma_parameters dma_parms;

	pci_power_t     current_state;  /* Current operating state. In ACPI-speak,
					   this is D0-D3, D0 being fully functional,
					   and D3 being off. */
	int		pm_cap;		/* PM capability offset in the
					   configuration space */
	unsigned int	pme_support:5;	/* Bitmask of states from which PME#
					   can be generated */
	unsigned int	d1_support:1;	/* Low power state D1 is supported */
	unsigned int	d2_support:1;	/* Low power state D2 is supported */
	unsigned int	no_d1d2:1;	/* Only allow D0 and D3 */

#ifdef CONFIG_PCIEASPM
	struct pcie_link_state	*link_state;	/* ASPM link state. */
#endif

	pci_channel_state_t error_state;	/* current connectivity state */
	struct	device	dev;		/* Generic device interface */

	int		cfg_size;	/* Size of configuration space */

	/*
	 * Instead of touching interrupt line and base address registers
	 * directly, use the values stored here. They might be different!
	 */
	unsigned int	irq;
	struct resource resource[DEVICE_COUNT_RESOURCE]; /* I/O and memory regions + expansion ROMs */

	/* These fields are used by common fixups */
	unsigned int	transparent:1;	/* Transparent PCI bridge */
	unsigned int	multifunction:1;/* Part of multi-function device */
	/* keep track of device state */
	unsigned int	is_added:1;
	unsigned int	is_busmaster:1; /* device is busmaster */
	unsigned int	no_msi:1;	/* device may not use msi */
	unsigned int	block_ucfg_access:1;	/* userspace config space access is blocked */
	unsigned int	broken_parity_status:1;	/* Device generates false positive parity */
	unsigned int	irq_reroute_variant:2;	/* device needs IRQ rerouting variant */
	unsigned int 	msi_enabled:1;
	unsigned int	msix_enabled:1;
	unsigned int	ari_enabled:1;	/* ARI forwarding */
	unsigned int	is_managed:1;
	unsigned int	is_pcie:1;
	unsigned int	state_saved:1;
	pci_dev_flags_t dev_flags;
	atomic_t	enable_cnt;	/* pci_enable_device has been called */

	u32		saved_config_space[16]; /* config space saved at suspend time */
	struct hlist_head saved_cap_space;
	struct bin_attribute *rom_attr; /* attribute descriptor for sysfs ROM entry */
	int rom_attr_enabled;		/* has display of the rom attribute been enabled? */
	struct bin_attribute *res_attr[DEVICE_COUNT_RESOURCE]; /* sysfs file for resources */
	struct bin_attribute *res_attr_wc[DEVICE_COUNT_RESOURCE]; /* sysfs file for WC mapping of resources */
#ifdef CONFIG_PCI_MSI
	struct list_head msi_list;
#endif
	struct pci_vpd *vpd;
};

extern struct pci_dev *alloc_pci_dev(void);

#define pci_dev_b(n) list_entry(n, struct pci_dev, bus_list)
#define	to_pci_dev(n) container_of(n, struct pci_dev, dev)
#define for_each_pci_dev(d) while ((d = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, d)) != NULL)

static inline int pci_channel_offline(struct pci_dev *pdev)
{
	return (pdev->error_state != pci_channel_io_normal);
}

static inline struct pci_cap_saved_state *pci_find_saved_cap(
	struct pci_dev *pci_dev, char cap)
{
	struct pci_cap_saved_state *tmp;
	struct hlist_node *pos;

	hlist_for_each_entry(tmp, pos, &pci_dev->saved_cap_space, next) {
		if (tmp->cap_nr == cap)
			return tmp;
	}
	return NULL;
}

static inline void pci_add_saved_cap(struct pci_dev *pci_dev,
	struct pci_cap_saved_state *new_cap)
{
	hlist_add_head(&new_cap->next, &pci_dev->saved_cap_space);
}

#ifndef PCI_BUS_NUM_RESOURCES
#define PCI_BUS_NUM_RESOURCES	16
#endif

#define PCI_REGION_FLAG_MASK	0x0fU	/* These bits of resource flags tell us the PCI region flags */

struct pci_bus {
	struct list_head node;		/* node in list of buses */
	struct pci_bus	*parent;	/* parent bus this bridge is on */
	struct list_head children;	/* list of child buses */
	struct list_head devices;	/* list of devices on this bus */
	struct pci_dev	*self;		/* bridge device as seen by parent */
	struct list_head slots;		/* list of slots on this bus */
	struct resource	*resource[PCI_BUS_NUM_RESOURCES];
					/* address space routed to this bus */

	struct pci_ops	*ops;		/* configuration access functions */
	void		*sysdata;	/* hook for sys-specific extension */
	struct proc_dir_entry *procdir;	/* directory entry in /proc/bus/pci */

	unsigned char	number;		/* bus number */
	unsigned char	primary;	/* number of primary bridge */
	unsigned char	secondary;	/* number of secondary bridge */
	unsigned char	subordinate;	/* max number of subordinate buses */

	char		name[48];

	unsigned short  bridge_ctl;	/* manage NO_ISA/FBB/et al behaviors */
	pci_bus_flags_t bus_flags;	/* Inherited by child busses */
	struct device		*bridge;
	struct device		dev;
	struct bin_attribute	*legacy_io; /* legacy I/O for this bus */
	struct bin_attribute	*legacy_mem; /* legacy mem */
	unsigned int		is_added:1;
};

#define pci_bus_b(n)	list_entry(n, struct pci_bus, node)
#define to_pci_bus(n)	container_of(n, struct pci_bus, dev)

#ifdef CONFIG_PCI_MSI
static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev)
{
	return pci_dev->msi_enabled || pci_dev->msix_enabled;
}
#else
static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev) { return false; }
#endif

/*
 * Error values that may be returned by PCI functions.
 */
#define PCIBIOS_SUCCESSFUL		0x00
#define PCIBIOS_FUNC_NOT_SUPPORTED	0x81
#define PCIBIOS_BAD_VENDOR_ID		0x83
#define PCIBIOS_DEVICE_NOT_FOUND	0x86
#define PCIBIOS_BAD_REGISTER_NUMBER	0x87
#define PCIBIOS_SET_FAILED		0x88
#define PCIBIOS_BUFFER_TOO_SMALL	0x89

/* Low-level architecture-dependent routines */

struct pci_ops {
	int (*read)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val);
	int (*write)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val);
};

/*
 * ACPI needs to be able to access PCI config space before we've done a
 * PCI bus scan and created pci_bus structures.
 */
extern int raw_pci_read(unsigned int domain, unsigned int bus,
			unsigned int devfn, int reg, int len, u32 *val);
extern int raw_pci_write(unsigned int domain, unsigned int bus,
			unsigned int devfn, int reg, int len, u32 val);

struct pci_bus_region {
	resource_size_t start;
	resource_size_t end;
};

struct pci_dynids {
	spinlock_t lock;            /* protects list, index */
	struct list_head list;      /* for IDs added at runtime */
};

/* ---------------------------------------------------------------- */
/** PCI Error Recovery System (PCI-ERS).  If a PCI device driver provides
 *  a set of callbacks in struct pci_error_handlers, then that device driver
 *  will be notified of PCI bus errors, and will be driven to recovery
 *  when an error occurs.
 */

typedef unsigned int __bitwise pci_ers_result_t;

enum pci_ers_result {
	/* no result/none/not supported in device driver */
	PCI_ERS_RESULT_NONE = (__force pci_ers_result_t) 1,

	/* Device driver can recover without slot reset */
	PCI_ERS_RESULT_CAN_RECOVER = (__force pci_ers_result_t) 2,

	/* Device driver wants slot to be reset. */
	PCI_ERS_RESULT_NEED_RESET = (__force pci_ers_result_t) 3,

	/* Device has completely failed, is unrecoverable */
	PCI_ERS_RESULT_DISCONNECT = (__force pci_ers_result_t) 4,

	/* Device driver is fully recovered and operational */
	PCI_ERS_RESULT_RECOVERED = (__force pci_ers_result_t) 5,
};

/* PCI bus error event callbacks */
struct pci_error_handlers {
	/* PCI bus error detected on this device */
	pci_ers_result_t (*error_detected)(struct pci_dev *dev,
					   enum pci_channel_state error);

	/* MMIO has been re-enabled, but not DMA */
	pci_ers_result_t (*mmio_enabled)(struct pci_dev *dev);

	/* PCI Express link has been reset */
	pci_ers_result_t (*link_reset)(struct pci_dev *dev);

	/* PCI slot has been reset */
	pci_ers_result_t (*slot_reset)(struct pci_dev *dev);

	/* Device driver may resume normal operations */
	void (*resume)(struct pci_dev *dev);
};

/* ---------------------------------------------------------------- */

struct module;
struct pci_driver {
	struct list_head node;
	char *name;
	const struct pci_device_id *id_table;	/* must be non-NULL for probe to be called */
	int  (*probe)  (struct pci_dev *dev, const struct pci_device_id *id);	/* New device inserted */
	void (*remove) (struct pci_dev *dev);	/* Device removed (NULL if not a hot-plug capable driver) */
	int  (*suspend) (struct pci_dev *dev, pm_message_t state);	/* Device suspended */
	int  (*suspend_late) (struct pci_dev *dev, pm_message_t state);
	int  (*resume_early) (struct pci_dev *dev);
	int  (*resume) (struct pci_dev *dev);	                /* Device woken up */
	void (*shutdown) (struct pci_dev *dev);
	struct pci_error_handlers *err_handler;
	struct device_driver	driver;
	struct pci_dynids dynids;
};

#define	to_pci_driver(drv) container_of(drv, struct pci_driver, driver)

/**
 * DEFINE_PCI_DEVICE_TABLE - macro used to describe a pci device table
 * @_table: device table name
 *
 * This macro is used to create a struct pci_device_id array (a device table)
 * in a generic manner.
 */
#define DEFINE_PCI_DEVICE_TABLE(_table) \
	const struct pci_device_id _table[] __devinitconst

/**
 * PCI_DEVICE - macro used to describe a specific pci device
 * @vend: the 16 bit PCI Vendor ID
 * @dev: the 16 bit PCI Device ID
 *
 * This macro is used to create a struct pci_device_id that matches a
 * specific device.  The subvendor and subdevice fields will be set to
 * PCI_ANY_ID.
 */
#define PCI_DEVICE(vend,dev) \
	.vendor = (vend), .device = (dev), \
	.subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID

/**
 * PCI_DEVICE_CLASS - macro used to describe a specific pci device class
 * @dev_class: the class, subclass, prog-if triple for this device
 * @dev_class_mask: the class mask for this device
 *
 * This macro is used to create a struct pci_device_id that matches a
 * specific PCI class.  The vendor, device, subvendor, and subdevice
 * fields will be set to PCI_ANY_ID.
 */
#define PCI_DEVICE_CLASS(dev_class,dev_class_mask) \
	.class = (dev_class), .class_mask = (dev_class_mask), \
	.vendor = PCI_ANY_ID, .device = PCI_ANY_ID, \
	.subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID

/**
 * PCI_VDEVICE - macro used to describe a specific pci device in short form
 * @vendor: the vendor name
 * @device: the 16 bit PCI Device ID
 *
 * This macro is used to create a struct pci_device_id that matches a
 * specific PCI device.  The subvendor, and subdevice fields will be set
 * to PCI_ANY_ID. The macro allows the next field to follow as the device
 * private data.
 */

#define PCI_VDEVICE(vendor, device)		\
	PCI_VENDOR_ID_##vendor, (device),	\
	PCI_ANY_ID, PCI_ANY_ID, 0, 0

/* these external functions are only available when PCI support is enabled */
#ifdef CONFIG_PCI

extern struct bus_type pci_bus_type;

/* Do NOT directly access these two variables, unless you are arch specific pci
 * code, or pci core code. */
extern struct list_head pci_root_buses;	/* list of all known PCI buses */
/* Some device drivers need know if pci is initiated */
extern int no_pci_devices(void);

void pcibios_fixup_bus(struct pci_bus *);
int __must_check pcibios_enable_device(struct pci_dev *, int mask);
char *pcibios_setup(char *str);

/* Used only when drivers/pci/setup.c is used */
void pcibios_align_resource(void *, struct resource *, resource_size_t,
				resource_size_t);
void pcibios_update_irq(struct pci_dev *, int irq);

/* Generic PCI functions used internally */

extern struct pci_bus *pci_find_bus(int domain, int busnr);
void pci_bus_add_devices(struct pci_bus *bus);
struct pci_bus *pci_scan_bus_parented(struct device *parent, int bus,
				      struct pci_ops *ops, void *sysdata);
static inline struct pci_bus * __devinit pci_scan_bus(int bus, struct pci_ops *ops,
					   void *sysdata)
{
	struct pci_bus *root_bus;
	root_bus = pci_scan_bus_parented(NULL, bus, ops, sysdata);
	if (root_bus)
		pci_bus_add_devices(root_bus);
	return root_bus;
}
struct pci_bus *pci_create_bus(struct device *parent, int bus,
			       struct pci_ops *ops, void *sysdata);
struct pci_bus *pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev,
				int busnr);
struct pci_slot *pci_create_slot(struct pci_bus *parent, int slot_nr,
				 const char *name,
				 struct hotplug_slot *hotplug);
void pci_destroy_slot(struct pci_slot *slot);
void pci_renumber_slot(struct pci_slot *slot, int slot_nr);
int pci_scan_slot(struct pci_bus *bus, int devfn);
struct pci_dev *pci_scan_single_device(struct pci_bus *bus, int devfn);
void pci_device_add(struct pci_dev *dev, struct pci_bus *bus);
unsigned int pci_scan_child_bus(struct pci_bus *bus);
int __must_check pci_bus_add_device(struct pci_dev *dev);
void pci_read_bridge_bases(struct pci_bus *child);
struct resource *pci_find_parent_resource(const struct pci_dev *dev,
					  struct resource *res);
u8 pci_swizzle_interrupt_pin(struct pci_dev *dev, u8 pin);
int pci_get_interrupt_pin(struct pci_dev *dev, struct pci_dev **bridge);
u8 pci_common_swizzle(struct pci_dev *dev, u8 *pinp);
extern struct pci_dev *pci_dev_get(struct pci_dev *dev);
extern void pci_dev_put(struct pci_dev *dev);
extern void pci_remove_bus(struct pci_bus *b);
extern void pci_remove_bus_device(struct pci_dev *dev);
extern void pci_stop_bus_device(struct pci_dev *dev);
void pci_setup_cardbus(struct pci_bus *bus);
extern void pci_sort_breadthfirst(void);

/* Generic PCI functions exported to card drivers */

#ifdef CONFIG_PCI_LEGACY
struct pci_dev __deprecated *pci_find_device(unsigned int vendor,
					     unsigned int device,
					     struct pci_dev *from);
struct pci_dev __deprecated *pci_find_slot(unsigned int bus,
					   unsigned int devfn);
#endif /* CONFIG_PCI_LEGACY */

enum pci_lost_interrupt_reason {
	PCI_LOST_IRQ_NO_INFORMATION = 0,
	PCI_LOST_IRQ_DISABLE_MSI,
	PCI_LOST_IRQ_DISABLE_MSIX,
	PCI_LOST_IRQ_DISABLE_ACPI,
};
enum pci_lost_interrupt_reason pci_lost_interrupt(struct pci_dev *dev);
int pci_find_capability(struct pci_dev *dev, int cap);
int pci_find_next_capability(struct pci_dev *dev, u8 pos, int cap);
int pci_find_ext_capability(struct pci_dev *dev, int cap);
int pci_find_ht_capability(struct pci_dev *dev, int ht_cap);
int pci_find_next_ht_capability(struct pci_dev *dev, int pos, int ht_cap);
struct pci_bus *pci_find_next_bus(const struct pci_bus *from);

struct pci_dev *pci_get_device(unsigned int vendor, unsigned int device,
				struct pci_dev *from);
struct pci_dev *pci_get_subsys(unsigned int vendor, unsigned int device,
				unsigned int ss_vendor, unsigned int ss_device,
				struct pci_dev *from);
struct pci_dev *pci_get_slot(struct pci_bus *bus, unsigned int devfn);
struct pci_dev *pci_get_bus_and_slot(unsigned int bus, unsigned int devfn);
struct pci_dev *pci_get_class(unsigned int class, struct pci_dev *from);
int pci_dev_present(const struct pci_device_id *ids);

int pci_bus_read_config_byte(struct pci_bus *bus, unsigned int devfn,
			     int where, u8 *val);
int pci_bus_read_config_word(struct pci_bus *bus, unsigned int devfn,
			     int where, u16 *val);
int pci_bus_read_config_dword(struct pci_bus *bus, unsigned int devfn,
			      int where, u32 *val);
int pci_bus_write_config_byte(struct pci_bus *bus, unsigned int devfn,
			      int where, u8 val);
int pci_bus_write_config_word(struct pci_bus *bus, unsigned int devfn,
			      int where, u16 val);
int pci_bus_write_config_dword(struct pci_bus *bus, unsigned int devfn,
			       int where, u32 val);

static inline int pci_read_config_byte(struct pci_dev *dev, int where, u8 *val)
{
	return pci_bus_read_config_byte(dev->bus, dev->devfn, where, val);
}
static inline int pci_read_config_word(struct pci_dev *dev, int where, u16 *val)
{
	return pci_bus_read_config_word(dev->bus, dev->devfn, where, val);
}
static inline int pci_read_config_dword(struct pci_dev *dev, int where,
					u32 *val)
{
	return pci_bus_read_config_dword(dev->bus, dev->devfn, where, val);
}
static inline int pci_write_config_byte(struct pci_dev *dev, int where, u8 val)
{
	return pci_bus_write_config_byte(dev->bus, dev->devfn, where, val);
}
static inline int pci_write_config_word(struct pci_dev *dev, int where, u16 val)
{
	return pci_bus_write_config_word(dev->bus, dev->devfn, where, val);
}
static inline int pci_write_config_dword(struct pci_dev *dev, int where,
					 u32 val)
{
	return pci_bus_write_config_dword(dev->bus, dev->devfn, where, val);
}

int __must_check pci_enable_device(struct pci_dev *dev);
int __must_check pci_enable_device_io(struct pci_dev *dev);
int __must_check pci_enable_device_mem(struct pci_dev *dev);
int __must_check pci_reenable_device(struct pci_dev *);
int __must_check pcim_enable_device(struct pci_dev *pdev);
void pcim_pin_device(struct pci_dev *pdev);

static inline int pci_is_managed(struct pci_dev *pdev)
{
	return pdev->is_managed;
}

void pci_disable_device(struct pci_dev *dev);
void pci_set_master(struct pci_dev *dev);
void pci_clear_master(struct pci_dev *dev);
int pci_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state state);
#define HAVE_PCI_SET_MWI
int __must_check pci_set_mwi(struct pci_dev *dev);
int pci_try_set_mwi(struct pci_dev *dev);
void pci_clear_mwi(struct pci_dev *dev);
void pci_intx(struct pci_dev *dev, int enable);
void pci_msi_off(struct pci_dev *dev);
int pci_set_dma_mask(struct pci_dev *dev, u64 mask);
int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask);
int pci_set_dma_max_seg_size(struct pci_dev *dev, unsigned int size);
int pci_set_dma_seg_boundary(struct pci_dev *dev, unsigned long mask);
int pcix_get_max_mmrbc(struct pci_dev *dev);
int pcix_get_mmrbc(struct pci_dev *dev);
int pcix_set_mmrbc(struct pci_dev *dev, int mmrbc);
int pcie_get_readrq(struct pci_dev *dev);
int pcie_set_readrq(struct pci_dev *dev, int rq);
int pci_reset_function(struct pci_dev *dev);
int pci_execute_reset_function(struct pci_dev *dev);
void pci_update_resource(struct pci_dev *dev, int resno);
int __must_check pci_assign_resource(struct pci_dev *dev, int i);
int pci_select_bars(struct pci_dev *dev, unsigned long flags);

/* ROM control related routines */
int pci_enable_rom(struct pci_dev *pdev);
void pci_disable_rom(struct pci_dev *pdev);
void __iomem __must_check *pci_map_rom(struct pci_dev *pdev, size_t *size);
void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom);
size_t pci_get_rom_size(struct pci_dev *pdev, void __iomem *rom, size_t size);

/* Power management related routines */
int pci_save_state(struct pci_dev *dev);
int pci_restore_state(struct pci_dev *dev);
int pci_set_power_state(struct pci_dev *dev, pci_power_t state);
pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state);
bool pci_pme_capable(struct pci_dev *dev, pci_power_t state);
void pci_pme_active(struct pci_dev *dev, bool enable);
int pci_enable_wake(struct pci_dev *dev, pci_power_t state, int enable);
int pci_wake_from_d3(struct pci_dev *dev, bool enable);
pci_power_t pci_target_state(struct pci_dev *dev);
int pci_prepare_to_sleep(struct pci_dev *dev);
int pci_back_from_sleep(struct pci_dev *dev);

/* Functions for PCI Hotplug drivers to use */
int pci_bus_find_capability(struct pci_bus *bus, unsigned int devfn, int cap);

/* Vital product data routines */
ssize_t pci_read_vpd(struct pci_dev *dev, loff_t pos, size_t count, void *buf);
ssize_t pci_write_vpd(struct pci_dev *dev, loff_t pos, size_t count, const void *buf);
int pci_vpd_truncate(struct pci_dev *dev, size_t size);

/* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */
void pci_bus_assign_resources(struct pci_bus *bus);
void pci_bus_size_bridges(struct pci_bus *bus);
int pci_claim_resource(struct pci_dev *, int);
void pci_assign_unassigned_resources(void);
void pdev_enable_device(struct pci_dev *);
void pdev_sort_resources(struct pci_dev *, struct resource_list *);
int pci_enable_resources(struct pci_dev *, int mask);
void pci_fixup_irqs(u8 (*)(struct pci_dev *, u8 *),
		    int (*)(struct pci_dev *, u8, u8));
#define HAVE_PCI_REQ_REGIONS	2
int __must_check pci_request_regions(struct pci_dev *, const char *);
int __must_check pci_request_regions_exclusive(struct pci_dev *, const char *);
void pci_release_regions(struct pci_dev *);
int __must_check pci_request_region(struct pci_dev *, int, const char *);