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atm_dev reference counting
this is a back port from 2.5.
[atm]: add reference counting to atm_dev
# This is a BitKeeper generated patch for the following project:
# Project Name: Linux kernel tree
# This patch format is intended for GNU patch command version 2.5 or higher.
# This patch includes the following deltas:
# ChangeSet 1.1012 -> 1.1013
# net/atm/addr.c 1.2 -> 1.3
# net/atm/lec.c 1.14 -> 1.15
# drivers/atm/he.c 1.2 -> 1.3
# net/atm/atm_misc.c 1.2 -> 1.3
# drivers/atm/eni.c 1.7 -> 1.8
# net/atm/mpc.c 1.7 -> 1.8
# include/linux/atmdev.h 1.8 -> 1.9
# net/atm/proc.c 1.6 -> 1.7
# net/atm/resources.c 1.5 -> 1.6
# net/atm/clip.c 1.8 -> 1.9
# drivers/atm/fore200e.c 1.8 -> 1.9
# drivers/atm/idt77252.c 1.7 -> 1.8
# drivers/atm/atmtcp.c 1.3 -> 1.4
# net/atm/signaling.c 1.4 -> 1.5
# net/atm/resources.h 1.2 -> 1.3
# net/atm/common.c 1.15 -> 1.16
#
# The following is the BitKeeper ChangeSet Log
# --------------------------------------------
# 03/06/26 bdschuym@pandora.be 1.1005.4.16
# [NETFILTER]: Add arptables mangle module.
# --------------------------------------------
# 03/06/26 chas@cmf.nrl.navy.mil 1.1005.4.17
# [ATM]: ixmicro puts esi in different location
# --------------------------------------------
# 03/06/26 chas@cmd.nrl.navy.mil 1.1005.4.18
# [ATM]: remove iovcnt member in struct atm_skb
# --------------------------------------------
# 03/06/26 chas@cmf.nrl.navy.mil 1.1005.4.19
# [ATM]: lock neighbor entry during update in clip.c
# --------------------------------------------
# 03/06/26 chas@cmf.nrl.navy.mil 1.1005.4.20
# [ATM]: make sub skb->cb is clear before upcall to network
# --------------------------------------------
# 03/06/26 chas@cmf.nrl.navy.mil 1.1005.4.21
# [ATM]: eliminate ATM_PDU_OVHD, ops->free_rx_skb and ops->alloc_tx
# --------------------------------------------
# 03/06/26 chas@cmf.nrl.navy.mil 1.1005.4.22
# [ATM]: make clip buildable as a module
# --------------------------------------------
# 03/06/27 marcelo@freak.distro.conectiva 1.1011.1.1
# Merge bk://kernel.bkbits.net/davem/crypto-2.4
# into freak.distro.conectiva:/home/marcelo/bk/linux-2.4
# --------------------------------------------
# 03/06/27 bcollins@debian.org 1.1011.1.2
# [PATCH] Update IEEE1394 (r972)
#
# IEEE1394 : Add OUI database.
# DV1394 : Fix endian conversion brokeness.
# ETH1394 : Updates for async streams, EUI based ARP and packet
# fragmentation.
# IEEE1394 : Host key lookup improvements.
# SBP2 : Fix > S400 max_payload setting.
# IEEE1394 : Move hotplug declerations around to more generic place.
# IEEE1394 : Fix possible memory leak in ISO code.
# IEEE1394 : Fix proc output for > page size.
# OHCI1394 : Async stream packets.
# OHCI1394 : Trivial CONFIG_PM support.
# SBP2 : Only allocate scsi_host for ieee1394_hosts that have sbp2
# devices attached to it (on demand scsi_host allocation).
# SBP2 : Code cleanups to bring closer to 2.5 code.
# SBP2 : Handle Logical_Unit_Number entries.
# VIDEO1394: Handle user pointer correctly.
# IEEE1394 : Macro namespace cleanups.
# ALL : Cleanups of some C constructs.
# ETH1394 : Limited multicast support.
# --------------------------------------------
# 03/06/27 schwidefsky@de.ibm.com 1.1011.1.3
# [PATCH] s390 base update
#
# s/390 base fixes:
# - docu: Correct description of 3270 device nodes
# - arch: Do reate_proc_entry for debug feature outside spin locked code.
# - arch: Set CR5 to get program checks for space switching instructions.
# - arch: Use sig_exit in 64 bit signal handler.
# - arch: Avoid warning in idals.h.
# - arch: Do pfix early in the boot process. No pfix for 64 bit.
# - arch: Fix linker output format for 64 bit kernels.
# - arch: Fix race condition in dirty bit clearing.
# - arch: Fix deadlock in pgd_populate.
#
# diffstat:
# arch/s390/kernel/debug.c | 20 ++++--
# arch/s390/kernel/head.S | 2
# arch/s390/kernel/s390_ksyms.c | 5 +
# arch/s390/kernel/setup.c | 133 ++++++++++++++++++++++++++++++++++++++++-
# arch/s390/mm/init.c | 5 -
# arch/s390x/kernel/debug.c | 20 ++++--
# arch/s390x/kernel/head.S | 17 -----
# arch/s390x/kernel/s390_ksyms.c | 2
# arch/s390x/kernel/setup.c | 6 -
# arch/s390x/kernel/signal.c | 5 -
# arch/s390x/mm/init.c | 74 ++++++++++++++++------
# arch/s390x/vmlinux-shared.lds | 2
# arch/s390x/vmlinux.lds | 2
# include/asm-s390/idals.h | 4 -
# include/asm-s390/page.h | 61 +-----------------
# include/asm-s390/pgtable.h | 36 ++---------
# include/asm-s390x/idals.h | 4 -
# include/asm-s390x/page.h | 61 +-----------------
# include/asm-s390x/pgtable.h | 36 ++---------
# include/asm-s390x/setup.h | 2
# include/linux/mm.h | 10 ++-
# 21 files changed, 261 insertions(+), 246 deletions(-)
# --------------------------------------------
# 03/06/27 schwidefsky@de.ibm.com 1.1011.1.4
# [PATCH] s390 common i/o layer fixes
#
# Common i/o fixes:
# - Don't confuse device drivers with zero sense data.
# - Check return code for the start of the basic sense ccw.
# - Fix deadlock in enable_cpu_sync_isc.
# - Fix check for path not operational condition.
# - Use unsigned long for flags variable in read_dev_chars.
# - Only try sense path group id on available paths.
# - Retry sense path group id on another path after deferred cc=3.
# - Fix deadlock in link incident handler.
# - Fix output in /proc/chpids.
# - Adapt to latest path group algorithm.
# - Fix handling of condition code 1 (status pending) on i/o operations.
# - Only process status pending conditions when doing sync. i/o.
# - Path revalidation fixes:
# * Add a handler for machine checks with chpid sources.
# * Distinguish between device gone and device not accessible in the
# device not operational handler.
# * Don't accept i/o from the device drivers while doing path revalidation.
# * Use a bottom half for doing path verification from interrupt context.
# * Don't do path verification if sync. isc is alread in use. Reschedule bh.
# * Kill pending i/o before doing path verification.
# * Always start with a logical path mask of 0xff because the information
# store by stsch() can be outdated.
# - Always use a tpi loop for basic sense.
# - Lowered level of 'not operational' messages.
# - Check after store event information if there are more crws pending.
# - Make diag210 a non-inline function to avoid problems with modules loaded
# above 2G.
# - Show reserved devices as "boxed" instead of "unkown".
# - Fix for path no operational condition in cio_start.
# - Fix /proc/cio_ignore string parsing.
# - Fix parsing of verbs in chandev.
#
# diffstat:
# drivers/s390/misc/chandev.c | 2
# drivers/s390/s390io.c | 2422 +++++++++++++++++++++++++-------------------
# drivers/s390/s390mach.c | 14
# include/asm-s390/irq.h | 43
# include/asm-s390/s390io.h | 14
# include/asm-s390/setup.h | 1
# include/asm-s390x/irq.h | 44
# include/asm-s390x/s390io.h | 16
# include/asm-s390x/setup.h | 1
# 9 files changed, 1494 insertions(+), 1063 deletions(-)
# --------------------------------------------
# 03/06/27 schwidefsky@de.ibm.com 1.1011.1.5
# [PATCH] s390 dasd driver update
#
# Big patch for the dasd driver.
#
# New features:
# - Add 'set on/off' to /proc/dasd/statistics.
# - Added BIODASDPSRD ioctl (Read Subsystem Performance Statistics).
# - Added BIODASDSATTR ioctl (Set Cache Attributes).
# - Support for XRC timestamping.
# - Add support for breaking the reservation of a dasd (boxed dasd access).
# - Implemented hotplug support for dasd.
# - Support for ESS dasd devices.
#
# Bug-Fixes:
# - Use internal timer instead of DOIO_TIMEOUT option (cio).
# - Use 'get_clock' instead of 'STCK....'
# - Switch off autodetect/probeonly as default behaviour.
# - Rework of dasd messages.
# - Reseve IOCTL-NR 240-255 for EMC
# - Fix statistics counting.
# - Clear request queue in dasd_disable_blkdev.
# - Fix for a race between dasd_format and sleep_on_req.
# - Fix for a race between reserve timeout and successful completion.
# - Set maximun end-cylinder to geometry cylinder -1 (in Define Extent).
# - Private implementation of BLKROSET.
# - Allow sharing of external interrupt 0x2603 between pfault and dasd diag.
# - Plug devices during bringup.
# - Get diag discipline to work again.
# - Check diag discipline forst on dynamic attach of a device.
# - EXPORT dasd_device_from_devno (needed by EMC)
# - Fix problem with ext3 doing modifications to the first request on the
# request queue.
# - Prevent scheduling in timer_bh.
# - Check for empty queue after state change pending interrupt.
# - Register a dasd only if the blocksize and the number of blocks are valid.
# - Check for spurious interrupts while waiting for basic sense data.
# - Check for unformatted dasd in BIODASDINFO ioctl.
# - Check for unformatted dasd in dasd_disable_blkdev.
# - Fix oops during boot if an invalid dasd= parameter has been specified.
# - Prevent dasd driver from creating /proc/partition names for scsi devices.
# - Return error for non-dasd-devices in dasd ioctls.
# - Add missing MODULE_LICENSE("GPL").
# - Don't accept invalid device numbers in /proc/dasd/devices interface.
# - Add check in dasd_discipline_del if discipline to be removed has been added.
# - Remove static initializer from dasd_major_info and use proper
# list_for_each operations for dasd_major_info list.
# - Disable dasd diag for 64 bit.
# - Fix race condition on timer variable in dasd_device_t.
# - Fix timeout processing for reserve/release requests.
# - Fix race condition between setup and first use of request_queue.
# - make dasd_eckd compile with gcc 3.3.
# - Post requests with invalid blocksize with i/o-error.
# - Various fixes for ESS dasd device support.
# - Fixed path revalidation.
# - Retry i/o after path failure.
# - Retry i/o after interface control check.
# - Fix major&minor number for dynamically attached dasd devices.
# - Fix low memory handling.
# - Free spinlock in case of an error in dasd_device_from_devno.
# - Head queue diag discipline to give it a chance to grab is device before eckd.
# - Remove some warnings.
# - Fix reserve/release for 64 bit.
# - Add module licence to fba discipline.
#
# diffstat:
# drivers/s390/block/dasd.c | 3568 ++++++++++++++++++++++++-------------
# drivers/s390/block/dasd_3990_erp.c | 1347 ++++++-------
# drivers/s390/block/dasd_diag.c | 273 +-
# drivers/s390/block/dasd_diag.h | 20
# drivers/s390/block/dasd_eckd.c | 729 +++++--
# drivers/s390/block/dasd_eckd.h | 152 -
# drivers/s390/block/dasd_fba.c | 116 -
# drivers/s390/block/dasd_fba.h | 12
# drivers/s390/block/dasd_int.h | 353 ++-
# include/asm-s390/ccwcache.h | 38
# include/asm-s390/dasd.h | 187 +
# include/asm-s390/vtoc.h | 1
# include/asm-s390x/ccwcache.h | 38
# include/asm-s390x/dasd.h | 187 +
# include/asm-s390x/vtoc.h | 1
# 15 files changed, 4532 insertions(+), 2490 deletions(-)
# --------------------------------------------
# 03/06/27 schwidefsky@de.ibm.com 1.1011.1.6
# [PATCH] s390 31 bit compat.
#
# 31 bit emulation changes:
# - Support for PER_LINUX32 personality added.
# - Added [un]register_ioctl32_conversion.
# - Don't do float/integer conversion in save/restore_sigregs32.
# - Add system call emulation for sys_readahead, sys_gettid, sys_tkill,
# sys_sysctl and sys_stime.
# - Add ioctl emulation for BLKBSZGET, BLKELVGET, BLKELVSET, BLKFLSBUF
# BLKFRAGET, BLKFRASET, BLKGETSIZE, BLKGETSIZE64, BLKPG, BLKRASET
# BLKROGET, BLKROSET, BLKSECTGET, BLKSECTSET, BLKSSZGET, LOOP_CLR_FD
# LOOP_GET_STATUS, LOOP_SET_FD, LOOP_SET_STATUS, RAW_GETBIND
# RAW_SETBIND and SIOCATMARK.
# - Signal backchain fix for 31 bit emulation signal handler.
# - Added missing check for SIGURG in emulation signal handler.
# - sys_msgsnd and sys_msgrcv emulation fixes.
# - Fix emulation for sys_getrlimit.
# - Add check for (ssize_t32) count < 0 in read and write system call emulation.
# - Check offset in pwrite system call emulation.
#
# diffstat:
# arch/s390x/kernel/Makefile | 2
# arch/s390x/kernel/binfmt_elf32.c | 8
# arch/s390x/kernel/entry.S | 12 -
# arch/s390x/kernel/exec_domain32.c | 30 +++
# arch/s390x/kernel/ioctl32.c | 181 ++++++++++++++++++
# arch/s390x/kernel/linux32.c | 364 +++++++++++++++++++++++++++++++++++---
# arch/s390x/kernel/s390_ksyms.c | 14 +
# arch/s390x/kernel/signal32.c | 14 +
# arch/s390x/kernel/wrapper32.S | 24 ++
# 9 files changed, 608 insertions(+), 41 deletions(-)
# --------------------------------------------
# 03/06/27 schwidefsky@de.ibm.com 1.1011.1.7
# [PATCH] s390 documentation update
#
# S/390 Documentation changes:
# - Updated section about /proc/subchannels.
# - Added description for /proc/chpids.
# - Added descriptions for get_irq_first() / get_irq_next().
# - Added description for read_conf_data().
# - Added description for s390_request_irq_special().
# - Typos and minor improvements.
#
# diffstat:
# Documentation/s390/CommonIO | 48 +++
# Documentation/s390/Debugging390.txt | 8
# Documentation/s390/cds.txt | 442 ++++++++++++++++++++++++++++--------
# 3 files changed, 397 insertions(+), 101 deletions(-)
# --------------------------------------------
# 03/06/27 schwidefsky@de.ibm.com 1.1011.1.8
# [PATCH] Add Configure.help entries for s390 options
#
# Update of s/390 specific documentation and help texts.
#
# diffstat:
# Documentation/Configure.help | 14 ++++++++++++++
# Documentation/devices.txt | 12 ++++++------
# 2 files changed, 20 insertions(+), 6 deletions(-)
# --------------------------------------------
# 03/06/27 schwidefsky@de.ibm.com 1.1011.1.9
# [PATCH] s390 3215 driver update
#
# Changes for the 3215 driver and new control character helper functions.
#
# diffstat:
# drivers/s390/char/con3215.c | 39 +++++++++++-------
# drivers/s390/char/ctrlchar.c | 92 +++++++++++++++++++------------------------
# drivers/s390/char/ctrlchar.h | 12 ++++-
# 3 files changed, 75 insertions(+), 68 deletions(-)
# --------------------------------------------
# 03/06/27 schwidefsky@de.ibm.com 1.1011.1.10
# [PATCH] s390 ctc network driver update
#
# Changes for the ctc network driver:
# - Fixed vary on/off issue.
# - Implemented restart after -EIO.
# - Changed severity of some warnings to debug.
# - Fixed physical link lost problems.
#
# diffstat:
# drivers/s390/net/ctcmain.c | 969 ++++++++++++++++++++++++++++++---------------
# drivers/s390/net/ctctty.c | 106 +++-
# drivers/s390/net/fsm.h | 2
# 3 files changed, 735 insertions(+), 342 deletions(-)
# --------------------------------------------
# 03/06/27 schwidefsky@de.ibm.com 1.1011.1.11
# [PATCH] s390 iucv network driver.
#
# Changes for the iucv network driver:
# - Added mising call of release_param().
# - Allow '$' in username.
# - Workaround for VM bug.
# - Don't rely on IUCV ipmsgtags.
# - Additional debug code.
# - Fix deadlock when starting more than 160 devices.
#
# diffstat:
# drivers/s390/net/iucv.c | 125 +++++++++++++++++++++++++++++++++++++--------
# drivers/s390/net/iucv.h | 4 +
# drivers/s390/net/netiucv.c | 83 +++++++++++++++++++++++------
# 3 files changed, 172 insertions(+), 40 deletions(-)
# --------------------------------------------
# 03/06/27 schwidefsky@de.ibm.com 1.1011.1.12
# [PATCH] s390 defconfigs update
#
# New default configurations.
#
# diffstat:
# arch/s390/defconfig | 218 ++++++++++++++++++++++++++++++++++++++++++---------
# arch/s390x/defconfig | 166 ++++++++++++++++++++++++++++++--------
# 2 files changed, 312 insertions(+), 72 deletions(-)
# --------------------------------------------
# 03/06/27 schwidefsky@de.ibm.com 1.1011.1.13
# [PATCH] console semaphore fix.
#
# Avoid BUG if panic is called from an interrupt context. This patch has been
# accepted to linux-2.5.
#
# diffstat:
# kernel/printk.c | 9 ++++++++-
# 1 files changed, 8 insertions(+), 1 deletion(-)
# --------------------------------------------
# 03/06/27 greg@kroah.com 1.1005.1.5
# Cset exclude: cweidema@indiana.edu|ChangeSet|20030620002017|05386
# --------------------------------------------
# 03/06/27 lethal@linux-sh.org 1.1011.1.14
# [PATCH] SH64 Merge
#
# Here's the patch for sh64! This adds arch/sh64 and include/asm-sh64. All
# changes are localized to these directories.
#
# Here's the diffstat output, nothing too terribly exciting:
#
# arch/sh64/Makefile | 91 +
# arch/sh64/boot/Makefile | 34
# arch/sh64/boot/compressed/Makefile | 57
# arch/sh64/boot/compressed/cache.c | 39
# arch/sh64/boot/compressed/head.S | 164 ++
# arch/sh64/boot/compressed/install.sh | 56
# arch/sh64/boot/compressed/misc.c | 251 +++
# arch/sh64/boot/compressed/vmlinux.lds.S | 65
# arch/sh64/config.in | 298 ++++
# arch/sh64/defconfig | 467 +++++++
# arch/sh64/kernel/Makefile | 38
# arch/sh64/kernel/entry.S | 2099 ++++++++++++++++++++++++++++++++
# arch/sh64/kernel/fpu.c | 171 ++
# arch/sh64/kernel/head.S | 347 +++++
# arch/sh64/kernel/init_task.c | 36
# arch/sh64/kernel/irq.c | 706 ++++++++++
# arch/sh64/kernel/irq_intc.c | 269 ++++
# arch/sh64/kernel/led.c | 69 +
# arch/sh64/kernel/pci-dma.c | 46
# arch/sh64/kernel/pci_sh5.c | 607 +++++++++
# arch/sh64/kernel/pci_sh5.h | 107 +
# arch/sh64/kernel/pcibios.c | 129 +
# arch/sh64/kernel/process.c | 903 +++++++++++++
# arch/sh64/kernel/ptrace.c | 375 +++++
# arch/sh64/kernel/semaphore.c | 137 ++
# arch/sh64/kernel/setup.c | 362 +++++
# arch/sh64/kernel/sh_ksyms.c | 78 +
# arch/sh64/kernel/signal.c | 821 ++++++++++++
# arch/sh64/kernel/sys_sh64.c | 268 ++++
# arch/sh64/kernel/time.c | 552 ++++++++
# arch/sh64/kernel/traps.c | 263 ++++
# arch/sh64/lib/Makefile | 26
# arch/sh64/lib/c-checksum.c | 330 +++++
# arch/sh64/lib/checksum.S | 656 ++++++++++
# arch/sh64/lib/copy_user_memcpy.S | 205 +++
# arch/sh64/lib/dbg.c | 319 ++++
# arch/sh64/lib/io.c | 200 +++
# arch/sh64/lib/memcpy.c | 82 +
# arch/sh64/lib/old-checksum.c | 17
# arch/sh64/lib/page_clear.S | 46
# arch/sh64/lib/page_copy.S | 77 +
# arch/sh64/lib/panic.c | 60
# arch/sh64/lib/syscalltab.h | 311 ++++
# arch/sh64/lib/udelay.c | 53
# arch/sh64/mach-cayman/Makefile | 15
# arch/sh64/mach-cayman/irq.c | 188 ++
# arch/sh64/mach-cayman/led.c | 47
# arch/sh64/mach-cayman/setup.c | 209 +++
# arch/sh64/mach-harp/Makefile | 14
# arch/sh64/mach-harp/setup.c | 139 ++
# arch/sh64/mach-sim/Makefile | 14
# arch/sh64/mach-sim/setup.c | 164 ++
# arch/sh64/mm/Makefile | 43
# arch/sh64/mm/cache.c | 1062 ++++++++++++++++
# arch/sh64/mm/extable.c | 95 +
# arch/sh64/mm/fault.c | 716 ++++++++++
# arch/sh64/mm/init.c | 203 +++
# arch/sh64/mm/ioremap.c | 358 +++++
# arch/sh64/mm/tlb.c | 166 ++
# arch/sh64/mm/tlbmiss.c | 276 ++++
# arch/sh64/vmlinux.lds.S | 158 ++
# include/asm-sh64/a.out.h | 37
# include/asm-sh64/atomic.h | 102 +
# include/asm-sh64/bitops.h | 364 +++++
# include/asm-sh64/bugs.h | 38
# include/asm-sh64/byteorder.h | 49
# include/asm-sh64/cache.h | 139 ++
# include/asm-sh64/cayman.h | 20
# include/asm-sh64/checksum.h | 321 ++++
# include/asm-sh64/current.h | 31
# include/asm-sh64/delay.h | 11
# include/asm-sh64/div64.h | 21
# include/asm-sh64/dma.h | 38
# include/asm-sh64/elf.h | 101 +
# include/asm-sh64/errno.h | 143 ++
# include/asm-sh64/fcntl.h | 87 +
# include/asm-sh64/hardirq.h | 42
# include/asm-sh64/hardware.h | 19
# include/asm-sh64/hw_irq.h | 16
# include/asm-sh64/init.h | 17
# include/asm-sh64/io.h | 215 +++
# include/asm-sh64/ioctl.h | 83 +
# include/asm-sh64/ioctls.h | 110 +
# include/asm-sh64/ipc.h | 42
# include/asm-sh64/ipcbuf.h | 40
# include/asm-sh64/irq.h | 142 ++
# include/asm-sh64/keyboard.h | 74 +
# include/asm-sh64/linux_logo.h | 47
# include/asm-sh64/mman.h | 49
# include/asm-sh64/mmu.h | 7
# include/asm-sh64/mmu_context.h | 209 +++
# include/asm-sh64/module.h | 12
# include/asm-sh64/msgbuf.h | 42
# include/asm-sh64/namei.h | 24
# include/asm-sh64/page.h | 129 +
# include/asm-sh64/param.h | 43
# include/asm-sh64/pci.h | 230 +++
# include/asm-sh64/pgalloc-3level.h | 78 +
# include/asm-sh64/pgalloc.h | 173 ++
# include/asm-sh64/pgtable-3level.h | 152 ++
# include/asm-sh64/pgtable.h | 336 +++++
# include/asm-sh64/platform.h | 69 +
# include/asm-sh64/poll.h | 36
# include/asm-sh64/posix_types.h | 128 +
# include/asm-sh64/processor.h | 273 ++++
# include/asm-sh64/ptrace.h | 38
# include/asm-sh64/registers.h | 199 +++
# include/asm-sh64/resource.h | 47
# include/asm-sh64/scatterlist.h | 36
# include/asm-sh64/segment.h | 6
# include/asm-sh64/semaphore-helper.h | 100 +
# include/asm-sh64/semaphore.h | 139 ++
# include/asm-sh64/sembuf.h | 36
# include/asm-sh64/serial.h | 33
# include/asm-sh64/shmbuf.h | 53
# include/asm-sh64/shmparam.h | 20
# include/asm-sh64/sigcontext.h | 30
# include/asm-sh64/siginfo.h | 233 +++
# include/asm-sh64/signal.h | 184 ++
# include/asm-sh64/smp.h | 15
# include/asm-sh64/smplock.h | 77 +
# include/asm-sh64/socket.h | 64
# include/asm-sh64/sockios.h | 24
# include/asm-sh64/softirq.h | 30
# include/asm-sh64/spinlock.h | 17
# include/asm-sh64/stat.h | 88 +
# include/asm-sh64/statfs.h | 36
# include/asm-sh64/string.h | 21
# include/asm-sh64/system.h | 405 ++++++
# include/asm-sh64/termbits.h | 183 ++
# include/asm-sh64/termios.h | 118 +
# include/asm-sh64/timex.h | 36
# include/asm-sh64/tlb.h | 95 +
# include/asm-sh64/types.h | 66 +
# include/asm-sh64/uaccess.h | 288 ++++
# include/asm-sh64/ucontext.h | 23
# include/asm-sh64/unaligned.h | 30
# include/asm-sh64/unistd.h | 416 ++++++
# include/asm-sh64/user.h | 71 +
# 139 files changed, 23750 insertions(+)
#
# and here's the patch..
# --------------------------------------------
# 03/06/27 grigouze@noos.fr 1.1005.1.6
# [PATCH] USB: zaurus SL-C700
#
# This is a patch for usbnet for working with Zaurus SL-C700.
# The productid is different from other Zaurus, so i add an entry for it :)
# --------------------------------------------
# 03/06/27 baldrick@wanadoo.fr 1.1005.1.7
# [PATCH] USB speedtouch: use common CRC library
#
# Remove the speedtouch CRC library. With this change, the speedtch
# module is no longer a multi-part object, so fix that up too.
# --------------------------------------------
# 03/06/27 abbotti@mev.co.uk 1.1005.1.8
# [PATCH] USB: several ftdi_sio driver patches
#
# I have attached several patches for the ftdi_sio (USB serial device)
# driver that I have been accumulating over the last month or so as
# the official maintainer (Bill Ryder) has been rather quiet of late.
# He hasn't responded to any patches or other messages on
# ftdi-usb-sio-devel since the end of March.
#
# The last patch Bill sent to linux-usb-devel was for ftdi_sio version
# 1.3.3, which is the latest available for download from the
# sourceforge project page. Greg had some criticisms about
# whitespace, braces, etc. which was not replied to by Bill.
#
# In this sequence of patches, I have tidied some things up, accepted
# patches and vid/pids for extra device support and fixed a spinlock
# bug.
#
# The patches apply cleanly in the sequence presented here. I have
# split the patches by function, but have attempted to preserve the
# chronology where possible - there is a certain amount of
# time-warping going on as can be seen from the file header comments
# changed by the patches!
#
# The patches are as follows:
#
# 2.4.21-ftdi_sio-p01-xonxoff.patch - John Wilkins Xon/Xoff patch
# (included in ftdi_sio-1.3.3)
#
# 2.4.21-ftdi_sio-p02-homechoice.patch - John Wilkins vid/pid for
# Homechoice (included in ftdi_sio-1.3.3)
#
# 2.4.21-ftdi_sio-p03-readspeed.patch - Richard Shooter's read
# speed-up code (included in ftdi_sio-1.3.3), but I've tidied up the
# source and moved some stuff around. I've bumped the version to
# 1.3.3a to distinguish it from the 1.3.3 that Bill previously sent.
#
# 2.4.21-ftdi_sio-p04-spinlockbug.patch - my patch to avoid copying
# user data with a spinlock held (and interrupts disabled).
#
# 2.4.21-ftdi_sio-p05-sealink.patch - Adds Sealevel vid/pids - based
# on a patch by Tuan Hoang but with less bloat.
#
# 2.4.21-ftdi_sio-p06-usbuirt.patch - David Norwood's patch for
# USB-UIRT device using a preset custom divisor.
#
# 2.4.21-ftdi_sio-p07-writepooltidy.patch - my patch to take account
# of write urb pool table entries that failed allocation, and to free
# the write urb and transfer buffer allocated by the usbserial
# driver.
#
# 2.4.21-ftdi_sio-p08-relais.patch - support for USB Relais pid,
# backported from 2.5.x.
#
# 2.4.21-ftdi_sio-p09-tira1.patch - half of Erik Nygren's patch to
# support Home Electronics' Tira-1 IR tranceiver using a preset
# custom divisor.
#
# 2.4.21-ftdi_sio-p10-forcebaud.patch - the other half of Erik
# Nygren's patch forces the baud rate setting to B38400 for USB-UIRT
# and Tira-1 devices and also forces RTS/CTS on for Tira-1.
#
# 2.4.21-ftdi_sio-p11-paranoid.patch - my patch to make sure pointers
# that fail paranoid checks are not dereferenced.
#
# 2.4.21-ftdi_sio-p12-versionbump.patch - my patch to bump the
# version. This is stepping on Bill's toes a little, but I think
# whatever ends up in the 2.4.22 kernel should be labelled version
# 1.3.4.
#
# I have a 2.5.x driver version as a work in progress containing most
# of the above changes. I just need to finish it off a little and
# maybe replace the write urb pool stuff with something resembling
# the changes in the Visor driver.
# --------------------------------------------
# 03/06/27 david@csse.uwa.edu.au 1.1005.1.9
# [PATCH] USB: usb-uhci fix for one-shot interrupt problem
#
# A change introduced into usb-uhci.c in 2.4.21 causes the kernel to
# freeze when usb-uhci is used with any driver using one-shot interrupt
# transfers. The attached fix was originally proposed by Frode Isaksen and
# improved by Pete Zaitcev. Pete Zaitcev has applied this patch as an
# errata fix for the RedHat 9.0 kernel.
#
# Other than the serious problem that this causes with the Lego USB driver
# (and yes, this is used pretty heavily in Universities for teaching and
# some research), there are other drivers (e.g. Visor Treo 90) that this
# causes problems for.
# --------------------------------------------
# 03/06/27 david@csse.uwa.edu.au 1.1005.1.10
# [PATCH] USB: usb-ohci handling of one-shot interrupt transfers
#
# A long standing problem has existed with usb-ohci handling of one-shot
# interrupt transfers (they never worked). Attached is a fix which was
# originally proposed by P.C. Chan and subsequently modified and
# re-presented by Frode Isaksen. The Lego USB driver does not work with
# ohci without this fix and so I would really appreciate it being applied.
# --------------------------------------------
# 03/06/27 oliver@neukum.org 1.1005.1.11
# [PATCH] USB: disconnect of v4l devices in 2.4
#
# in 2.4 video_unregister_device() has lost its magic properties
# breaking most USB v4l drivers. IMHO they should be converted
# to delayed freeing resources just like ordinary character devices.
# Here's the change for vicam.c.
# --------------------------------------------
# 03/06/27 oliver@neukum.org 1.1005.1.12
# [PATCH] USB: fix to previous vicam patch
#
# OK, I'll think next time.
# - fix my own stupid oversight regarding disconnect()
# --------------------------------------------
# 03/06/27 greg@kroah.com 1.1005.1.13
# [PATCH] USB: compiler fixes for previous vicam patches.
# --------------------------------------------
# 03/06/27 greg@kroah.com 1.1011.1.15
# Merge kroah.com:/home/greg/linux/BK/bleed-2.4
# into kroah.com:/home/greg/linux/BK/gregkh-2.4
# --------------------------------------------
# 03/06/27 judd@jpilot.org 1.1011.1.16
# [PATCH] USB: visor.h[c] USB device IDs
#
# Add ability to specify USB vendor and product ids as module options.
# --------------------------------------------
# 03/06/27 chas@relax.cmf.nrl.navy.mil 1.1013
# do reference counting of struct atm_dev
# --------------------------------------------
#
diff -Nru a/drivers/atm/atmtcp.c b/drivers/atm/atmtcp.c
--- a/drivers/atm/atmtcp.c Mon Jun 30 13:23:17 2003
+++ b/drivers/atm/atmtcp.c Mon Jun 30 13:23:17 2003
@@ -153,6 +153,7 @@
static int atmtcp_v_ioctl(struct atm_dev *dev,unsigned int cmd,void *arg)
{
+ unsigned long flags;
struct atm_cirange ci;
struct atm_vcc *vcc;
@@ -162,9 +163,14 @@
if (ci.vci_bits == ATM_CI_MAX) ci.vci_bits = MAX_VCI_BITS;
if (ci.vpi_bits > MAX_VPI_BITS || ci.vpi_bits < 0 ||
ci.vci_bits > MAX_VCI_BITS || ci.vci_bits < 0) return -EINVAL;
+ spin_lock_irqsave(&dev->lock, flags);
for (vcc = dev->vccs; vcc; vcc = vcc->next)
if ((vcc->vpi >> ci.vpi_bits) ||
- (vcc->vci >> ci.vci_bits)) return -EBUSY;
+ (vcc->vci >> ci.vci_bits)) {
+ spin_unlock_irqrestore(&dev->lock, flags);
+ return -EBUSY;
+ }
+ spin_unlock_irqrestore(&dev->lock, flags);
dev->ci_range = ci;
return 0;
}
@@ -227,6 +233,7 @@
static void atmtcp_c_close(struct atm_vcc *vcc)
{
+ unsigned long flags;
struct atm_dev *atmtcp_dev;
struct atmtcp_dev_data *dev_data;
struct atm_vcc *walk;
@@ -239,13 +246,16 @@
kfree(dev_data);
shutdown_atm_dev(atmtcp_dev);
vcc->dev_data = NULL;
+ spin_lock_irqsave(&atmtcp_dev->lock, flags);
for (walk = atmtcp_dev->vccs; walk; walk = walk->next)
wake_up(&walk->sleep);
+ spin_unlock_irqrestore(&atmtcp_dev->lock, flags);
}
static int atmtcp_c_send(struct atm_vcc *vcc,struct sk_buff *skb)
{
+ unsigned long flags;
struct atm_dev *dev;
struct atmtcp_hdr *hdr;
struct atm_vcc *out_vcc;
@@ -260,11 +270,13 @@
(struct atmtcp_control *) skb->data);
goto done;
}
+ spin_lock_irqsave(&dev->lock, flags);
for (out_vcc = dev->vccs; out_vcc; out_vcc = out_vcc->next)
if (out_vcc->vpi == ntohs(hdr->vpi) &&
out_vcc->vci == ntohs(hdr->vci) &&
out_vcc->qos.rxtp.traffic_class != ATM_NONE)
break;
+ spin_unlock_irqrestore(&dev->lock, flags);
if (!out_vcc) {
atomic_inc(&vcc->stats->tx_err);
goto done;
@@ -293,13 +305,13 @@
static struct atmdev_ops atmtcp_v_dev_ops = {
- dev_close: atmtcp_v_dev_close,
- open: atmtcp_v_open,
- close: atmtcp_v_close,
- ioctl: atmtcp_v_ioctl,
- send: atmtcp_v_send,
- proc_read: atmtcp_v_proc,
- owner: THIS_MODULE
+ .dev_close = atmtcp_v_dev_close,
+ .open = atmtcp_v_open,
+ .close = atmtcp_v_close,
+ .ioctl = atmtcp_v_ioctl,
+ .send = atmtcp_v_send,
+ .proc_read = atmtcp_v_proc,
+ .owner = THIS_MODULE
};
@@ -309,21 +321,16 @@
static struct atmdev_ops atmtcp_c_dev_ops = {
- close: atmtcp_c_close,
- send: atmtcp_c_send
+ .close = atmtcp_c_close,
+ .send = atmtcp_c_send
};
static struct atm_dev atmtcp_control_dev = {
- &atmtcp_c_dev_ops,
- NULL, /* no PHY */
- "atmtcp", /* type */
- 999, /* dummy device number */
- NULL,NULL, /* pretend not to have any VCCs */
- NULL,NULL, /* no data */
- { 0 }, /* no flags */
- NULL, /* no local address */
- { 0 } /* no ESI, no statistics */
+ .ops = &atmtcp_c_dev_ops,
+ .type = "atmtcp",
+ .number = 999,
+ .lock = SPIN_LOCK_UNLOCKED
};
@@ -356,9 +363,12 @@
struct atm_dev *dev;
dev = NULL;
- if (itf != -1) dev = atm_find_dev(itf);
+ if (itf != -1) dev = atm_dev_lookup(itf);
if (dev) {
- if (dev->ops != &atmtcp_v_dev_ops) return -EMEDIUMTYPE;
+ if (dev->ops != &atmtcp_v_dev_ops) {
+ atm_dev_release(dev);
+ return -EMEDIUMTYPE;
+ }
if (PRIV(dev)->vcc) return -EBUSY;
}
else {
@@ -389,14 +399,18 @@
struct atm_dev *dev;
struct atmtcp_dev_data *dev_data;
- dev = atm_find_dev(itf);
+ dev = atm_dev_lookup(itf);
if (!dev) return -ENODEV;
- if (dev->ops != &atmtcp_v_dev_ops) return -EMEDIUMTYPE;
+ if (dev->ops != &atmtcp_v_dev_ops) {
+ atm_dev_release(dev);
+ return -EMEDIUMTYPE;
+ }
dev_data = PRIV(dev);
if (!dev_data->persist) return 0;
dev_data->persist = 0;
if (PRIV(dev)->vcc) return 0;
kfree(dev_data);
+ atm_dev_release(dev);
shutdown_atm_dev(dev);
return 0;
}
diff -Nru a/drivers/atm/eni.c b/drivers/atm/eni.c
--- a/drivers/atm/eni.c Mon Jun 30 13:23:17 2003
+++ b/drivers/atm/eni.c Mon Jun 30 13:23:17 2003
@@ -1887,8 +1887,10 @@
static int get_ci(struct atm_vcc *vcc,short *vpi,int *vci)
{
+ unsigned long flags;
struct atm_vcc *walk;
+ spin_lock_irqsave(&vcc->dev->lock, flags);
if (*vpi == ATM_VPI_ANY) *vpi = 0;
if (*vci == ATM_VCI_ANY) {
for (*vci = ATM_NOT_RSV_VCI; *vci < NR_VCI; (*vci)++) {
@@ -1907,17 +1909,29 @@
}
break;
}
+ spin_unlock_irqrestore(&vcc->dev->lock, flags);
return *vci == NR_VCI ? -EADDRINUSE : 0;
}
- if (*vci == ATM_VCI_UNSPEC) return 0;
+ if (*vci == ATM_VCI_UNSPEC) {
+ spin_unlock_irqrestore(&vcc->dev->lock, flags);
+ return 0;
+ }
if (vcc->qos.rxtp.traffic_class != ATM_NONE &&
- ENI_DEV(vcc->dev)->rx_map[*vci])
+ ENI_DEV(vcc->dev)->rx_map[*vci]) {
+ spin_unlock_irqrestore(&vcc->dev->lock, flags);
return -EADDRINUSE;
- if (vcc->qos.txtp.traffic_class == ATM_NONE) return 0;
+ }
+ if (vcc->qos.txtp.traffic_class == ATM_NONE) {
+ spin_unlock_irqrestore(&vcc->dev->lock, flags);
+ return 0;
+ }
for (walk = vcc->dev->vccs; walk; walk = walk->next)
if (test_bit(ATM_VF_ADDR,&walk->flags) && walk->vci == *vci &&
- walk->qos.txtp.traffic_class != ATM_NONE)
+ walk->qos.txtp.traffic_class != ATM_NONE) {
+ spin_unlock_irqrestore(&vcc->dev->lock, flags);
return -EADDRINUSE;
+ }
+ spin_unlock_irqrestore(&vcc->dev->lock, flags);
return 0;
}
@@ -2125,6 +2139,7 @@
static int eni_proc_read(struct atm_dev *dev,loff_t *pos,char *page)
{
+ unsigned long flags;
static const char *signal[] = { "LOST","unknown","okay" };
struct eni_dev *eni_dev = ENI_DEV(dev);
struct atm_vcc *vcc;
@@ -2197,6 +2212,7 @@
return sprintf(page,"%10sbacklog %u packets\n","",
skb_queue_len(&tx->backlog));
}
+ spin_lock_irqsave(&dev->lock, flags);
for (vcc = dev->vccs; vcc; vcc = vcc->next) {
struct eni_vcc *eni_vcc = ENI_VCC(vcc);
int length;
@@ -2215,8 +2231,10 @@
length += sprintf(page+length,"tx[%d], txing %d bytes",
eni_vcc->tx->index,eni_vcc->txing);
page[length] = '\n';
+ spin_unlock_irqrestore(&dev->lock, flags);
return length+1;
}
+ spin_unlock_irqrestore(&dev->lock, flags);
for (i = 0; i < eni_dev->free_len; i++) {
struct eni_free *fe = eni_dev->free_list+i;
unsigned long offset;
diff -Nru a/drivers/atm/fore200e.c b/drivers/atm/fore200e.c
--- a/drivers/atm/fore200e.c Mon Jun 30 13:23:17 2003
+++ b/drivers/atm/fore200e.c Mon Jun 30 13:23:17 2003
@@ -1077,13 +1077,16 @@
static struct atm_vcc*
fore200e_find_vcc(struct fore200e* fore200e, struct rpd* rpd)
{
+ unsigned long flags;
struct atm_vcc* vcc;
+ spin_lock_irqsave(&fore200e->atm_dev->lock, flags);
for (vcc = fore200e->atm_dev->vccs; vcc; vcc = vcc->next) {
if (vcc->vpi == rpd->atm_header.vpi && vcc->vci == rpd->atm_header.vci)
break;
}
+ spin_unlock_irqrestore(&fore200e->atm_dev->lock, flags);
return vcc;
}
@@ -1354,9 +1357,13 @@
static int
fore200e_walk_vccs(struct atm_vcc *vcc, short *vpi, int *vci)
{
+ unsigned long flags;
struct atm_vcc* walk;
/* find a free VPI */
+
+ spin_lock_irqsave(&vcc->dev->lock, flags);
+
if (*vpi == ATM_VPI_ANY) {
for (*vpi = 0, walk = vcc->dev->vccs; walk; walk = walk->next) {
@@ -1380,6 +1387,8 @@
}
}
+ spin_unlock_irqrestore(&vcc->dev->lock, flags);
+
return 0;
}
@@ -2640,6 +2649,7 @@
static int
fore200e_proc_read(struct atm_dev *dev,loff_t* pos,char* page)
{
+ unsigned long flags;
struct fore200e* fore200e = FORE200E_DEV(dev);
int len, left = *pos;
@@ -2886,6 +2896,7 @@
len = sprintf(page,"\n"
" VCCs:\n address\tVPI.VCI:AAL\t(min/max tx PDU size) (min/max rx PDU size)\n");
+ spin_lock_irqsave(&fore200e->atm_dev->lock, flags);
for (vcc = fore200e->atm_dev->vccs; vcc; vcc = vcc->next) {
fore200e_vcc = FORE200E_VCC(vcc);
@@ -2900,6 +2911,7 @@
fore200e_vcc->rx_max_pdu
);
}
+ spin_unlock_irqrestore(&fore200e->atm_dev->lock, flags);
return len;
}
diff -Nru a/drivers/atm/he.c b/drivers/atm/he.c
--- a/drivers/atm/he.c Mon Jun 30 13:23:17 2003
+++ b/drivers/atm/he.c Mon Jun 30 13:23:17 2003
@@ -329,6 +329,7 @@
static __inline__ struct atm_vcc*
he_find_vcc(struct he_dev *he_dev, unsigned cid)
{
+ unsigned long flags;
struct atm_vcc *vcc;
short vpi;
int vci;
@@ -336,10 +337,15 @@
vpi = cid >> he_dev->vcibits;
vci = cid & ((1 << he_dev->vcibits) - 1);
+ spin_lock_irqsave(&he_dev->atm_dev->lock, flags);
for (vcc = he_dev->atm_dev->vccs; vcc; vcc = vcc->next)
if (vcc->vci == vci && vcc->vpi == vpi
- && vcc->qos.rxtp.traffic_class != ATM_NONE) return vcc;
+ && vcc->qos.rxtp.traffic_class != ATM_NONE) {
+ spin_unlock_irqrestore(&he_dev->atm_dev->lock, flags);
+ return vcc;
+ }
+ spin_unlock_irqrestore(&he_dev->atm_dev->lock, flags);
return NULL;
}
diff -Nru a/drivers/atm/idt77252.c b/drivers/atm/idt77252.c
--- a/drivers/atm/idt77252.c Mon Jun 30 13:23:17 2003
+++ b/drivers/atm/idt77252.c Mon Jun 30 13:23:17 2003
@@ -2404,8 +2404,10 @@
static int
idt77252_find_vcc(struct atm_vcc *vcc, short *vpi, int *vci)
{
+ unsigned long flags;
struct atm_vcc *walk;
+ spin_lock_irqsave(&vcc->dev->lock, flags);
if (*vpi == ATM_VPI_ANY) {
*vpi = 0;
walk = vcc->dev->vccs;
@@ -2432,6 +2434,7 @@
}
}
+ spin_unlock_irqrestore(&vcc->dev->lock, flags);
return 0;
}
diff -Nru a/include/linux/atmdev.h b/include/linux/atmdev.h
--- a/include/linux/atmdev.h Mon Jun 30 13:23:17 2003
+++ b/include/linux/atmdev.h Mon Jun 30 13:23:17 2003
@@ -341,6 +341,8 @@
struct k_atm_dev_stats stats; /* statistics */
char signal; /* signal status (ATM_PHY_SIG_*) */
int link_rate; /* link rate (default: OC3) */
+ atomic_t refcnt; /* reference count */
+ spinlock_t lock; /* protect internal members */
#ifdef CONFIG_PROC_FS
struct proc_dir_entry *proc_entry; /* proc entry */
char *proc_name; /* proc entry name */
@@ -402,7 +404,7 @@
struct atm_dev *atm_dev_register(const char *type,const struct atmdev_ops *ops,
int number,atm_dev_flags_t *flags); /* number == -1: pick first available */
-struct atm_dev *atm_find_dev(int number);
+struct atm_dev *atm_dev_lookup(int number);
void atm_dev_deregister(struct atm_dev *dev);
void shutdown_atm_dev(struct atm_dev *dev);
void bind_vcc(struct atm_vcc *vcc,struct atm_dev *dev);
@@ -413,27 +415,43 @@
*
*/
-static __inline__ int atm_guess_pdu2truesize(int pdu_size)
+static inline int atm_guess_pdu2truesize(int pdu_size)
{
return ((pdu_size+15) & ~15) + sizeof(struct sk_buff);
}
-static __inline__ void atm_force_charge(struct atm_vcc *vcc,int truesize)
+static inline void atm_force_charge(struct atm_vcc *vcc,int truesize)
{
atomic_add(truesize, &vcc->sk->rmem_alloc);
}
-static __inline__ void atm_return(struct atm_vcc *vcc,int truesize)
+static inline void atm_return(struct atm_vcc *vcc,int truesize)
{
atomic_sub(truesize, &vcc->sk->rmem_alloc);
}
-static __inline__ int atm_may_send(struct atm_vcc *vcc,unsigned int size)
+static inline int atm_may_send(struct atm_vcc *vcc,unsigned int size)
{
return (size + atomic_read(&vcc->sk->wmem_alloc)) < vcc->sk->sndbuf;
+}
+
+
+static inline void atm_dev_hold(struct atm_dev *dev)
+{
+ atomic_inc(&dev->refcnt);
+}
+
+
+static inline void atm_dev_release(struct atm_dev *dev)
+{
+ atomic_dec(&dev->refcnt);
+
+ if ((atomic_read(&dev->refcnt) == 1) &&
+ test_bit(ATM_DF_CLOSE,&dev->flags))
+ shutdown_atm_dev(dev);
}
diff -Nru a/net/atm/addr.c b/net/atm/addr.c
--- a/net/atm/addr.c Mon Jun 30 13:23:17 2003
+++ b/net/atm/addr.c Mon Jun 30 13:23:17 2003
@@ -36,14 +36,6 @@
}
-/*
- * Avoid modification of any list of local interfaces while reading it
- * (which may involve page faults and therefore rescheduling)
- */
-
-static DECLARE_MUTEX(local_lock);
-extern spinlock_t atm_dev_lock;
-
static void notify_sigd(struct atm_dev *dev)
{
struct sockaddr_atmpvc pvc;
@@ -52,46 +44,46 @@
sigd_enq(NULL,as_itf_notify,NULL,&pvc,NULL);
}
-/*
- * This is called from atm_ioctl only. You must hold the lock as a caller
- */
void atm_reset_addr(struct atm_dev *dev)
{
+ unsigned long flags;
struct atm_dev_addr *this;
- down(&local_lock);
+ spin_lock_irqsave(&dev->lock, flags);
while (dev->local) {
this = dev->local;
dev->local = this->next;
kfree(this);
}
- up(&local_lock);
+ spin_unlock_irqrestore(&dev->lock, flags);
notify_sigd(dev);
}
int atm_add_addr(struct atm_dev *dev,struct sockaddr_atmsvc *addr)
{
+ unsigned long flags;
struct atm_dev_addr **walk;
int error;
error = check_addr(addr);
- if (error) return error;
- down(&local_lock);
+ if (error)
+ return error;
+ spin_lock_irqsave(&dev->lock, flags);
for (walk = &dev->local; *walk; walk = &(*walk)->next)
if (identical(&(*walk)->addr,addr)) {
- up(&local_lock);
+ spin_unlock_irqrestore(&dev->lock, flags);
return -EEXIST;
}
- *walk = kmalloc(sizeof(struct atm_dev_addr),GFP_KERNEL);
+ *walk = kmalloc(sizeof(struct atm_dev_addr), GFP_ATOMIC);
if (!*walk) {
- up(&local_lock);
+ spin_unlock_irqrestore(&dev->lock, flags);
return -ENOMEM;
}
(*walk)->addr = *addr;
(*walk)->next = NULL;
- up(&local_lock);
+ spin_unlock_irqrestore(&dev->lock, flags);
notify_sigd(dev);
return 0;
}
@@ -99,22 +91,24 @@
int atm_del_addr(struct atm_dev *dev,struct sockaddr_atmsvc *addr)
{
+ unsigned long flags;
struct atm_dev_addr **walk,*this;
int error;
error = check_addr(addr);
- if (error) return error;
- down(&local_lock);
+ if (error)
+ return error;
+ spin_lock_irqsave(&dev->lock, flags);
for (walk = &dev->local; *walk; walk = &(*walk)->next)
if (identical(&(*walk)->addr,addr)) break;
if (!*walk) {
- up(&local_lock);
+ spin_unlock_irqrestore(&dev->lock, flags);
return -ENOENT;
}
this = *walk;
*walk = this->next;
kfree(this);
- up(&local_lock);
+ spin_unlock_irqrestore(&dev->lock, flags);
notify_sigd(dev);
return 0;
}
@@ -122,24 +116,25 @@
int atm_get_addr(struct atm_dev *dev,struct sockaddr_atmsvc *u_buf,int size)
{
+ unsigned long flags;
struct atm_dev_addr *walk;
int total;
- down(&local_lock);
+ spin_lock_irqsave(&dev->lock, flags);
total = 0;
for (walk = dev->local; walk; walk = walk->next) {
total += sizeof(struct sockaddr_atmsvc);
if (total > size) {
- up(&local_lock);
+ spin_unlock_irqrestore(&dev->lock, flags);
return -E2BIG;
}
if (copy_to_user(u_buf,&walk->addr,
sizeof(struct sockaddr_atmsvc))) {
- up(&local_lock);
+ spin_unlock_irqrestore(&dev->lock, flags);
return -EFAULT;
}
u_buf++;
}
- up(&local_lock);
+ spin_unlock_irqrestore(&dev->lock, flags);
return total;
}
diff -Nru a/net/atm/atm_misc.c b/net/atm/atm_misc.c
--- a/net/atm/atm_misc.c Mon Jun 30 13:23:17 2003
+++ b/net/atm/atm_misc.c Mon Jun 30 13:23:17 2003
@@ -63,13 +63,19 @@
int atm_find_ci(struct atm_vcc *vcc,short *vpi,int *vci)
{
+ unsigned long flags;
static short p = 0; /* poor man's per-device cache */
static int c = 0;
short old_p;
int old_c;
+ int err;
- if (*vpi != ATM_VPI_ANY && *vci != ATM_VCI_ANY)
- return check_ci(vcc,*vpi,*vci);
+ spin_lock_irqsave(&vcc->dev->lock, flags);
+ if (*vpi != ATM_VPI_ANY && *vci != ATM_VCI_ANY) {
+ err = check_ci(vcc,*vpi,*vci);
+ spin_unlock_irqrestore(&vcc->dev->lock, flags);
+ return err;
+ }
/* last scan may have left values out of bounds for current device */
if (*vpi != ATM_VPI_ANY) p = *vpi;
else if (p >= 1 << vcc->dev->ci_range.vpi_bits) p = 0;
@@ -82,6 +88,7 @@
if (!check_ci(vcc,p,c)) {
*vpi = p;
*vci = c;
+ spin_unlock_irqrestore(&vcc->dev->lock, flags);
return 0;
}
if (*vci == ATM_VCI_ANY) {
@@ -96,6 +103,7 @@
}
}
while (old_p != p || old_c != c);
+ spin_unlock_irqrestore(&vcc->dev->lock, flags);
return -EADDRINUSE;
}
diff -Nru a/net/atm/clip.c b/net/atm/clip.c
--- a/net/atm/clip.c Mon Jun 30 13:23:17 2003
+++ b/net/atm/clip.c Mon Jun 30 13:23:17 2003
@@ -713,9 +713,10 @@
static struct atm_dev atmarpd_dev = {
- .ops = &atmarpd_dev_ops,
- .type = "arpd",
- .number = 999,
+ .ops = &atmarpd_dev_ops,
+ .type = "arpd",
+ .number = 999,
+ .lock = SPIN_LOCK_UNLOCKED
};
diff -Nru a/net/atm/common.c b/net/atm/common.c
--- a/net/atm/common.c Mon Jun 30 13:23:17 2003
+++ b/net/atm/common.c Mon Jun 30 13:23:17 2003
@@ -116,7 +116,6 @@
#define DPRINTK(format,args...)
#endif
-spinlock_t atm_dev_lock = SPIN_LOCK_UNLOCKED;
static struct sk_buff *alloc_tx(struct atm_vcc *vcc,unsigned int size)
{
@@ -178,19 +177,18 @@
atm_return(vcc,skb->truesize);
kfree_skb(skb);
}
- spin_lock (&atm_dev_lock);
- fops_put (vcc->dev->ops);
+
+ if (vcc->dev->ops->owner)
+ __MOD_DEC_USE_COUNT(vcc->dev->ops->owner);
+ atm_dev_release(vcc->dev);
if (atomic_read(&vcc->sk->rmem_alloc))
printk(KERN_WARNING "atm_release_vcc: strange ... "
"rmem_alloc == %d after closing\n",
atomic_read(&vcc->sk->rmem_alloc));
bind_vcc(vcc,NULL);
- } else
- spin_lock (&atm_dev_lock);
+ }
if (free_sk) free_atm_vcc_sk(sk);
-
- spin_unlock (&atm_dev_lock);
}
@@ -283,11 +281,13 @@
vcc->qos.txtp.min_pcr,vcc->qos.txtp.max_pcr,vcc->qos.txtp.max_sdu);
DPRINTK(" RX: %d, PCR %d..%d, SDU %d\n",vcc->qos.rxtp.traffic_class,
vcc->qos.rxtp.min_pcr,vcc->qos.rxtp.max_pcr,vcc->qos.rxtp.max_sdu);
- fops_get (dev->ops);
+ if (!try_inc_mod_count(dev->ops->owner))
+ return -ENODEV;
if (dev->ops->open) {
error = dev->ops->open(vcc,vpi,vci);
if (error) {
- fops_put (dev->ops);
+ if (dev->ops->owner)
+ __MOD_DEC_USE_COUNT(dev->ops->owner);
bind_vcc(vcc,NULL);
return error;
}
@@ -301,14 +301,13 @@
struct atm_dev *dev;
int return_val;
- spin_lock (&atm_dev_lock);
- dev = atm_find_dev(itf);
+ dev = atm_dev_lookup(itf);
if (!dev)
return_val = -ENODEV;
- else
+ else {
return_val = atm_do_connect_dev(vcc,dev,vpi,vci);
-
- spin_unlock (&atm_dev_lock);
+ if (return_val) atm_dev_release(dev);
+ }
return return_val;
}
@@ -339,15 +338,20 @@
}
else {
struct atm_dev *dev = NULL;
- struct list_head *p;
+ struct list_head *p, *next;
- spin_lock (&atm_dev_lock);
- list_for_each(p, &atm_devs) {
+ spin_lock(&atm_dev_lock);
+ list_for_each_safe(p, next, &atm_devs) {
dev = list_entry(p, struct atm_dev, dev_list);
- if (!atm_do_connect_dev(vcc,dev,vpi,vci)) break;
+ atm_dev_hold(dev);
+ spin_unlock(&atm_dev_lock);
+ if (!atm_do_connect_dev(vcc,dev,vpi,vci))
+ break;
+ atm_dev_release(dev);
dev = NULL;
+ spin_lock(&atm_dev_lock);
}
- spin_unlock (&atm_dev_lock);
+ spin_unlock(&atm_dev_lock);
if (!dev) return -ENODEV;
}
if (vpi == ATM_VPI_UNSPEC || vci == ATM_VCI_UNSPEC)
@@ -565,7 +569,6 @@
int error,len,size,number, ret_val;
ret_val = 0;
- spin_lock (&atm_dev_lock);
vcc = ATM_SD(sock);
switch (cmd) {
case SIOCOUTQ:
@@ -603,14 +606,17 @@
goto done;
}
size = 0;
+ spin_lock(&atm_dev_lock);
list_for_each(p, &atm_devs)
size += sizeof(int);
if (size > len) {
+ spin_unlock(&atm_dev_lock);
ret_val = -E2BIG;
goto done;
}
- tmp_buf = kmalloc(size,GFP_KERNEL);
+ tmp_buf = kmalloc(size, GFP_ATOMIC);
if (!tmp_buf) {
+ spin_unlock(&atm_dev_lock);
ret_val = -ENOMEM;
goto done;
}
@@ -619,6 +625,7 @@
dev = list_entry(p, struct atm_dev, dev_list);
*tmp_p++ = dev->number;
}
+ spin_unlock(&atm_dev_lock);
ret_val = ((copy_to_user(buf, tmp_buf, size)) ||
put_user(size, &((struct atm_iobuf *) arg)->length)
) ? -EFAULT : 0;
@@ -845,7 +852,7 @@
ret_val = -EFAULT;
goto done;
}
- if (!(dev = atm_find_dev(number))) {
+ if (!(dev = atm_dev_lookup(number))) {
ret_val = -ENODEV;
goto done;
}
@@ -856,14 +863,14 @@
size = strlen(dev->type)+1;
if (copy_to_user(buf,dev->type,size)) {
ret_val = -EFAULT;
- goto done;
+ goto done_release;
}
break;
case ATM_GETESI:
size = ESI_LEN;
if (copy_to_user(buf,dev->esi,size)) {
ret_val = -EFAULT;
- goto done;
+ goto done_release;
}
break;
case ATM_SETESI:
@@ -873,7 +880,7 @@
for (i = 0; i < ESI_LEN; i++)
if (dev->esi[i]) {
ret_val = -EEXIST;
- goto done;
+ goto done_release;
}
}
/* fall through */
@@ -883,20 +890,20 @@
if (!capable(CAP_NET_ADMIN)) {
ret_val = -EPERM;
- goto done;
+ goto done_release;
}
if (copy_from_user(esi,buf,ESI_LEN)) {
ret_val = -EFAULT;
- goto done;
+ goto done_release;
}
memcpy(dev->esi,esi,ESI_LEN);
ret_val = ESI_LEN;
- goto done;
+ goto done_release;
}
case ATM_GETSTATZ:
if (!capable(CAP_NET_ADMIN)) {
ret_val = -EPERM;
- goto done;
+ goto done_release;
}
/* fall through */
case ATM_GETSTAT:
@@ -904,27 +911,27 @@
error = fetch_stats(dev,buf,cmd == ATM_GETSTATZ);
if (error) {
ret_val = error;
- goto done;
+ goto done_release;
}
break;
case ATM_GETCIRANGE:
size = sizeof(struct atm_cirange);
if (copy_to_user(buf,&dev->ci_range,size)) {
ret_val = -EFAULT;
- goto done;
+ goto done_release;
}
break;
case ATM_GETLINKRATE:
size = sizeof(int);
if (copy_to_user(buf,&dev->link_rate,size)) {
ret_val = -EFAULT;
- goto done;
+ goto done_release;
}
break;
case ATM_RSTADDR:
if (!capable(CAP_NET_ADMIN)) {
ret_val = -EPERM;
- goto done;
+ goto done_release;
}
atm_reset_addr(dev);
break;
@@ -932,20 +939,20 @@
case ATM_DELADDR:
if (!capable(CAP_NET_ADMIN)) {
ret_val = -EPERM;
- goto done;
+ goto done_release;
}
{
struct sockaddr_atmsvc addr;
if (copy_from_user(&addr,buf,sizeof(addr))) {
ret_val = -EFAULT;
- goto done;
+ goto done_release;
}
if (cmd == ATM_ADDADDR)
ret_val = atm_add_addr(dev,&addr);
else
ret_val = atm_del_addr(dev,&addr);
- goto done;
+ goto done_release;
}
case ATM_GETADDR:
size = atm_get_addr(dev,buf,len);
@@ -956,13 +963,13 @@
write the length" */
ret_val = put_user(size,
&((struct atmif_sioc *) arg)->length) ? -EFAULT : 0;
- goto done;
+ goto done_release;
case ATM_SETLOOP:
if (__ATM_LM_XTRMT((int) (long) buf) &&
__ATM_LM_XTLOC((int) (long) buf) >
__ATM_LM_XTRMT((int) (long) buf)) {
ret_val = -EINVAL;
- goto done;
+ goto done_release;
}
/* fall through */
case ATM_SETCIRANGE:
@@ -972,18 +979,18 @@
case SONET_SETFRAMING:
if (!capable(CAP_NET_ADMIN)) {
ret_val = -EPERM;
- goto done;
+ goto done_release;
}
/* fall through */
default:
if (!dev->ops->ioctl) {
ret_val = -EINVAL;
- goto done;
+ goto done_release;
}
size = dev->ops->ioctl(dev,cmd,buf);
if (size < 0) {
ret_val = (size == -ENOIOCTLCMD ? -EINVAL : size);
- goto done;
+ goto done_release;
}
}
@@ -992,9 +999,10 @@
-EFAULT : 0;
else
ret_val = 0;
+done_release:
+ atm_dev_release(dev);
- done:
- spin_unlock (&atm_dev_lock);
+done:
return ret_val;
}
diff -Nru a/net/atm/lec.c b/net/atm/lec.c
--- a/net/atm/lec.c Mon Jun 30 13:23:17 2003
+++ b/net/atm/lec.c Mon Jun 30 13:23:17 2003
@@ -550,20 +550,15 @@
}
static struct atmdev_ops lecdev_ops = {
- close: lec_atm_close,
- send: lec_atm_send
+ .close = lec_atm_close,
+ .send = lec_atm_send
};
static struct atm_dev lecatm_dev = {
- &lecdev_ops,
- NULL, /*PHY*/
- "lec", /*type*/
- 999, /*dummy device number*/
- NULL,NULL, /*no VCCs*/
- NULL,NULL, /*no data*/
- { 0 }, /*no flags*/
- NULL, /* no local address*/
- { 0 } /*no ESI or rest of the atm_dev struct things*/
+ .ops = &lecdev_ops,
+ .type = "lec",
+ .number = 999,
+ .lock = SPIN_LOCK_UNLOCKED
};
/*
diff -Nru a/net/atm/mpc.c b/net/atm/mpc.c
--- a/net/atm/mpc.c Mon Jun 30 13:23:17 2003
+++ b/net/atm/mpc.c Mon Jun 30 13:23:17 2003
@@ -736,22 +736,15 @@
}
static struct atmdev_ops mpc_ops = { /* only send is required */
- close: mpoad_close,
- send: msg_from_mpoad
+ .close = mpoad_close,
+ .send = msg_from_mpoad
};
static struct atm_dev mpc_dev = {
- &mpc_ops, /* device operations */
- NULL, /* PHY operations */
- "mpc", /* device type name */
- 42, /* device index (dummy) */
- NULL, /* VCC table */
- NULL, /* last VCC */
- NULL, /* per-device data */
- NULL, /* private PHY data */
- { 0 }, /* device flags */
- NULL, /* local ATM address */
- { 0 } /* no ESI */
+ .ops = &mpc_ops,
+ .type = "mpc",
+ .number = 42,
+ .lock = SPIN_LOCK_UNLOCKED
/* rest of the members will be 0 */
};
diff -Nru a/net/atm/proc.c b/net/atm/proc.c
--- a/net/atm/proc.c Mon Jun 30 13:23:17 2003
+++ b/net/atm/proc.c Mon Jun 30 13:23:17 2003
@@ -84,6 +84,7 @@
add_stats(buf,"0",&dev->stats.aal0);
strcat(buf," ");
add_stats(buf,"5",&dev->stats.aal5);
+ sprintf(strchr(buf,0), "\t[%d]", atomic_read(&dev->refcnt));
strcat(buf,"\n");
}
@@ -161,7 +162,7 @@
#endif
-static void pvc_info(struct atm_vcc *vcc,char *buf)
+static void pvc_info(struct atm_vcc *vcc, char *buf, int clip_info)
{
static const char *class_name[] = { "off","UBR","CBR","VBR","ABR" };
static const char *aal_name[] = {
@@ -178,20 +179,17 @@
class_name[vcc->qos.rxtp.traffic_class],vcc->qos.txtp.min_pcr,
class_name[vcc->qos.txtp.traffic_class]);
#if defined(CONFIG_ATM_CLIP) || defined(CONFIG_ATM_CLIP_MODULE)
- if (try_atm_clip_ops()) {
- if (vcc->push == atm_clip_ops->clip_push) {
- struct clip_vcc *clip_vcc = CLIP_VCC(vcc);
- struct net_device *dev;
-
- dev = clip_vcc->entry ? clip_vcc->entry->neigh->dev : NULL;
- off += sprintf(buf+off,"CLIP, Itf:%s, Encap:",
- dev ? dev->name : "none?");
- if (clip_vcc->encap)
- off += sprintf(buf+off,"LLC/SNAP");
- else
- off += sprintf(buf+off,"None");
- }
- __MOD_DEC_USE_COUNT(atm_clip_ops->owner);
+ if (clip_info && (vcc->push == atm_clip_ops->clip_push)) {
+ struct clip_vcc *clip_vcc = CLIP_VCC(vcc);
+ struct net_device *dev;
+
+ dev = clip_vcc->entry ? clip_vcc->entry->neigh->dev : NULL;
+ off += sprintf(buf+off,"CLIP, Itf:%s, Encap:",
+ dev ? dev->name : "none?");
+ if (clip_vcc->encap)
+ off += sprintf(buf+off,"LLC/SNAP");
+ else
+ off += sprintf(buf+off,"None");
}
#endif
strcpy(buf+off,"\n");
@@ -312,16 +310,19 @@
if (!pos) {
return sprintf(buf,"Itf Type ESI/\"MAC\"addr "
- "AAL(TX,err,RX,err,drop) ...\n");
+ "AAL(TX,err,RX,err,drop) ... [refcnt]\n");
}
left = pos-1;
+ spin_lock(&atm_dev_lock);
list_for_each(p, &atm_devs) {
dev = list_entry(p, struct atm_dev, dev_list);
if (left-- == 0) {
dev_info(dev,buf);
+ spin_unlock(&atm_dev_lock);
return strlen(buf);
}
}
+ spin_unlock(&atm_dev_lock);
return 0;
}
@@ -332,31 +333,50 @@
static int atm_pvc_info(loff_t pos,char *buf)
{
+ unsigned long flags;
struct atm_dev *dev;
struct list_head *p;
struct atm_vcc *vcc;
- int left;
+ int left, clip_info = 0;
if (!pos) {
return sprintf(buf,"Itf VPI VCI AAL RX(PCR,Class) "
"TX(PCR,Class)\n");
}
left = pos-1;
+#if defined(CONFIG_ATM_CLIP) || defined(CONFIG_ATM_CLIP_MODULE)
+ if (try_atm_clip_ops())
+ clip_info = 1;
+#endif
+ spin_lock(&atm_dev_lock);
list_for_each(p, &atm_devs) {
dev = list_entry(p, struct atm_dev, dev_list);
+ spin_lock_irqsave(&dev->lock, flags);
for (vcc = dev->vccs; vcc; vcc = vcc->next)
- if (vcc->sk->family == PF_ATMPVC &&
- vcc->dev && !left--) {
- pvc_info(vcc,buf);
+ if (vcc->sk->family == PF_ATMPVC && vcc->dev && !left--) {
+ pvc_info(vcc,buf,clip_info);
+ spin_unlock_irqrestore(&dev->lock, flags);
+ spin_unlock(&atm_dev_lock);
+#if defined(CONFIG_ATM_CLIP) || defined(CONFIG_ATM_CLIP_MODULE)
+ if (clip_info)
+ __MOD_DEC_USE_COUNT(atm_clip_ops->owner);
+#endif
return strlen(buf);
}
+ spin_unlock_irqrestore(&dev->lock, flags);
}
+ spin_unlock(&atm_dev_lock);
+#if defined(CONFIG_ATM_CLIP) || defined(CONFIG_ATM_CLIP_MODULE)
+ if (clip_info)
+ __MOD_DEC_USE_COUNT(atm_clip_ops->owner);
+#endif
return 0;
}
static int atm_vc_info(loff_t pos,char *buf)
{
+ unsigned long flags;
struct atm_dev *dev;
struct list_head *p;
struct atm_vcc *vcc;
@@ -367,19 +387,20 @@
"Address"," Itf VPI VCI Fam Flags Reply Send buffer"
" Recv buffer\n");
left = pos-1;
+ spin_lock(&atm_dev_lock);
list_for_each(p, &atm_devs) {
dev = list_entry(p, struct atm_dev, dev_list);
+ spin_lock_irqsave(&dev->lock, flags);
for (vcc = dev->vccs; vcc; vcc = vcc->next)
if (!left--) {
vc_info(vcc,buf);
+ spin_unlock_irqrestore(&dev->lock, flags);
+ spin_unlock(&atm_dev_lock);
return strlen(buf);
}
+ spin_unlock_irqrestore(&dev->lock, flags);
}
- for (vcc = nodev_vccs; vcc; vcc = vcc->next)
- if (!left--) {
- vc_info(vcc,buf);
- return strlen(buf);
- }
+ spin_unlock(&atm_dev_lock);
return 0;
}
@@ -387,6 +408,7 @@
static int atm_svc_info(loff_t pos,char *buf)
{
+ unsigned long flags;
struct atm_dev *dev;
struct list_head *p;
struct atm_vcc *vcc;
@@ -395,19 +417,21 @@
if (!pos)
return sprintf(buf,"Itf VPI VCI State Remote\n");
left = pos-1;
+ spin_lock(&atm_dev_lock);
list_for_each(p, &atm_devs) {
dev = list_entry(p, struct atm_dev, dev_list);
+ spin_lock_irqsave(&dev->lock, flags);
for (vcc = dev->vccs; vcc; vcc = vcc->next)
if (vcc->sk->family == PF_ATMSVC && !left--) {
svc_info(vcc,buf);
+ spin_unlock_irqrestore(&dev->lock, flags);
+ spin_unlock(&atm_dev_lock);
return strlen(buf);
}
+ spin_unlock_irqrestore(&dev->lock, flags);
}
- for (vcc = nodev_vccs; vcc; vcc = vcc->next)
- if (vcc->sk->family == PF_ATMSVC && !left--) {
- svc_info(vcc,buf);
- return strlen(buf);
- }
+ spin_unlock(&atm_dev_lock);
+
return 0;
}
diff -Nru a/net/atm/resources.c b/net/atm/resources.c
--- a/net/atm/resources.c Mon Jun 30 13:23:17 2003
+++ b/net/atm/resources.c Mon Jun 30 13:23:17 2003
@@ -23,67 +23,83 @@
LIST_HEAD(atm_devs);
-struct atm_vcc *nodev_vccs = NULL;
-extern spinlock_t atm_dev_lock;
+spinlock_t atm_dev_lock = SPIN_LOCK_UNLOCKED;
-static struct atm_dev *alloc_atm_dev(const char *type)
+static struct atm_dev *__alloc_atm_dev(const char *type)
{
struct atm_dev *dev;
dev = kmalloc(sizeof(*dev), GFP_ATOMIC);
- if (!dev) return NULL;
- memset(dev,0,sizeof(*dev));
+ if (!dev)
+ return NULL;
+ memset(dev, 0, sizeof(*dev));
dev->type = type;
dev->signal = ATM_PHY_SIG_UNKNOWN;
dev->link_rate = ATM_OC3_PCR;
- list_add_tail(&dev->dev_list, &atm_devs);
+ spin_lock_init(&dev->lock);
return dev;
}
-static void free_atm_dev(struct atm_dev *dev)
+static void __free_atm_dev(struct atm_dev *dev)
{
- list_del(&dev->dev_list);
kfree(dev);
}
-struct atm_dev *atm_find_dev(int number)
+static struct atm_dev *__atm_dev_lookup(int number)
{
struct atm_dev *dev;
struct list_head *p;
list_for_each(p, &atm_devs) {
dev = list_entry(p, struct atm_dev, dev_list);
- if (dev->ops && dev->number == number)
+ if ((dev->ops) && (dev->number == number)) {
+ atm_dev_hold(dev);
return dev;
+ }
}
return NULL;
}
-struct atm_dev *atm_dev_register(const char *type,const struct atmdev_ops *ops,
- int number,atm_dev_flags_t *flags)
+struct atm_dev *atm_dev_lookup(int number)
{
- struct atm_dev *dev = NULL;
+ struct atm_dev *dev;
spin_lock(&atm_dev_lock);
+ dev = __atm_dev_lookup(number);
+ spin_unlock(&atm_dev_lock);
+ return dev;
+}
- dev = alloc_atm_dev(type);
+struct atm_dev *atm_dev_register(const char *type, const struct atmdev_ops *ops,
+ int number, atm_dev_flags_t *flags)
+{
+ struct atm_dev *dev, *inuse;
+
+
+ dev = __alloc_atm_dev(type);
if (!dev) {
printk(KERN_ERR "atm_dev_register: no space for dev %s\n",
type);
- goto done;
+ return NULL;
}
+ spin_lock(&atm_dev_lock);
if (number != -1) {
- if (atm_find_dev(number)) {
- free_atm_dev(dev);
+ if ((inuse = __atm_dev_lookup(number))) {
+ atm_dev_release(inuse);
+ spin_unlock(&atm_dev_lock);
+ __free_atm_dev(dev);
return NULL;
}
dev->number = number;
} else {
dev->number = 0;
- while (atm_find_dev(dev->number)) dev->number++;
+ while ((inuse = __atm_dev_lookup(dev->number))) {
+ atm_dev_release(inuse);
+ dev->number++;
+ }
}
dev->vccs = dev->last = NULL;
dev->dev_data = NULL;
@@ -92,41 +108,66 @@
if (flags)
dev->flags = *flags;
else
- memset(&dev->flags,0,sizeof(dev->flags));
- memset((void *) &dev->stats,0,sizeof(dev->stats));
+ memset(&dev->flags, 0, sizeof(dev->flags));
+ memset(&dev->stats, 0, sizeof(dev->stats));
+ atomic_set(&dev->refcnt, 1);
+ list_add_tail(&dev->dev_list, &atm_devs);
+ spin_unlock(&atm_dev_lock);
+
#ifdef CONFIG_PROC_FS
- if (ops->proc_read)
+ if (ops->proc_read) {
if (atm_proc_dev_register(dev) < 0) {
printk(KERN_ERR "atm_dev_register: "
- "atm_proc_dev_register failed for dev %s\n",type);
- free_atm_dev(dev);
- goto done;
+ "atm_proc_dev_register failed for dev %s\n",
+ type);
+ spin_lock(&atm_dev_lock);
+ list_del(&dev->dev_list);
+ spin_unlock(&atm_dev_lock);
+ __free_atm_dev(dev);
+ return NULL;
}
+ }
#endif
-done:
- spin_unlock(&atm_dev_lock);
return dev;
}
void atm_dev_deregister(struct atm_dev *dev)
{
+ unsigned long warning_time;
+
#ifdef CONFIG_PROC_FS
if (dev->ops->proc_read) atm_proc_dev_deregister(dev);
#endif
spin_lock(&atm_dev_lock);
- free_atm_dev(dev);
+ list_del(&dev->dev_list);
spin_unlock(&atm_dev_lock);
+
+ warning_time = jiffies;
+ while (atomic_read(&dev->refcnt) != 1) {
+ current->state = TASK_INTERRUPTIBLE;
+ schedule_timeout(HZ / 4);
+ current->state = TASK_RUNNING;
+ if ((jiffies - warning_time) > 10 * HZ) {
+ printk(KERN_EMERG "atm_dev_deregister: waiting for "
+ "dev %d to become free. Usage count = %d\n",
+ dev->number, atomic_read(&dev->refcnt));
+ warning_time = jiffies;
+ }
+ }
+
+ __free_atm_dev(dev);
}
void shutdown_atm_dev(struct atm_dev *dev)
{
- if (dev->vccs) {
- set_bit(ATM_DF_CLOSE,&dev->flags);
+ if (atomic_read(&dev->refcnt) > 1) {
+ set_bit(ATM_DF_CLOSE, &dev->flags);
return;
}
- if (dev->ops->dev_close) dev->ops->dev_close(dev);
+ if (dev->ops->dev_close)
+ dev->ops->dev_close(dev);
atm_dev_deregister(dev);
}
@@ -143,66 +184,69 @@
struct atm_vcc *vcc;
sk = sk_alloc(family, GFP_KERNEL, 1);
- if (!sk) return NULL;
- vcc = sk->protinfo.af_atm = kmalloc(sizeof(*vcc),GFP_KERNEL);
+ if (!sk)
+ return NULL;
+ vcc = sk->protinfo.af_atm = kmalloc(sizeof(*vcc), GFP_KERNEL);
if (!vcc) {
sk_free(sk);
return NULL;
}
- sock_init_data(NULL,sk);
+ sock_init_data(NULL, sk);
sk->destruct = atm_free_sock;
- memset(vcc,0,sizeof(*vcc));
+ memset(vcc, 0, sizeof(*vcc));
vcc->sk = sk;
- if (nodev_vccs) nodev_vccs->prev = vcc;
- vcc->prev = NULL;
- vcc->next = nodev_vccs;
- nodev_vccs = vcc;
+
return sk;
}
-static void unlink_vcc(struct atm_vcc *vcc,struct atm_dev *hold_dev)
+static void unlink_vcc(struct atm_vcc *vcc)
{
- if (vcc->prev) vcc->prev->next = vcc->next;
- else if (vcc->dev) vcc->dev->vccs = vcc->next;
- else nodev_vccs = vcc->next;
- if (vcc->next) vcc->next->prev = vcc->prev;
- else if (vcc->dev) vcc->dev->last = vcc->prev;
- if (vcc->dev && vcc->dev != hold_dev && !vcc->dev->vccs &&
- test_bit(ATM_DF_CLOSE,&vcc->dev->flags))
- shutdown_atm_dev(vcc->dev);
+ unsigned long flags;
+ if (vcc->dev) {
+ spin_lock_irqsave(&vcc->dev->lock, flags);
+ if (vcc->prev)
+ vcc->prev->next = vcc->next;
+ else
+ vcc->dev->vccs = vcc->next;
+
+ if (vcc->next)
+ vcc->next->prev = vcc->prev;
+ else
+ vcc->dev->last = vcc->prev;
+ spin_unlock_irqrestore(&vcc->dev->lock, flags);
+ }
}
+
void free_atm_vcc_sk(struct sock *sk)
{
- unlink_vcc(sk->protinfo.af_atm,NULL);
+ unlink_vcc(sk->protinfo.af_atm);
sk_free(sk);
}
void bind_vcc(struct atm_vcc *vcc,struct atm_dev *dev)
{
- unlink_vcc(vcc,dev);
+ unsigned long flags;
+
+ unlink_vcc(vcc);
vcc->dev = dev;
if (dev) {
+ spin_lock_irqsave(&dev->lock, flags);
vcc->next = NULL;
vcc->prev = dev->last;
if (dev->vccs) dev->last->next = vcc;
else dev->vccs = vcc;
dev->last = vcc;
- }
- else {
- if (nodev_vccs) nodev_vccs->prev = vcc;
- vcc->next = nodev_vccs;
- vcc->prev = NULL;
- nodev_vccs = vcc;
+ spin_unlock_irqrestore(&dev->lock, flags);
}
}
EXPORT_SYMBOL(atm_dev_register);
EXPORT_SYMBOL(atm_dev_deregister);
-EXPORT_SYMBOL(atm_find_dev);
+EXPORT_SYMBOL(atm_dev_lookup);
EXPORT_SYMBOL(shutdown_atm_dev);
EXPORT_SYMBOL(bind_vcc);
diff -Nru a/net/atm/resources.h b/net/atm/resources.h
--- a/net/atm/resources.h Mon Jun 30 13:23:17 2003
+++ b/net/atm/resources.h Mon Jun 30 13:23:17 2003
@@ -11,7 +11,7 @@
extern struct list_head atm_devs;
-extern struct atm_vcc *nodev_vccs; /* VCCs not linked to any device */
+extern spinlock_t atm_dev_lock;
struct sock *alloc_atm_vcc_sk(int family);
diff -Nru a/net/atm/signaling.c b/net/atm/signaling.c
--- a/net/atm/signaling.c Mon Jun 30 13:23:17 2003
+++ b/net/atm/signaling.c Mon Jun 30 13:23:17 2003
@@ -33,7 +33,6 @@
struct atm_vcc *sigd = NULL;
static DECLARE_WAIT_QUEUE_HEAD(sigd_sleep);
-extern spinlock_t atm_dev_lock;
static void sigd_put_skb(struct sk_buff *skb)
{
@@ -211,6 +210,7 @@
static void sigd_close(struct atm_vcc *vcc)
{
+ unsigned long flags;
struct atm_dev *dev;
struct list_head *p;
@@ -219,33 +219,29 @@
if (skb_peek(&vcc->sk->receive_queue))
printk(KERN_ERR "sigd_close: closing with requests pending\n");
skb_queue_purge(&vcc->sk->receive_queue);
- purge_vccs(nodev_vccs);
- spin_lock (&atm_dev_lock);
+ spin_lock(&atm_dev_lock);
list_for_each(p, &atm_devs) {
dev = list_entry(p, struct atm_dev, dev_list);
+ spin_lock_irqsave(&dev->lock, flags);
purge_vccs(dev->vccs);
+ spin_unlock_irqrestore(&dev->lock, flags);
}
- spin_unlock (&atm_dev_lock);
+ spin_unlock(&atm_dev_lock);
}
static struct atmdev_ops sigd_dev_ops = {
- close: sigd_close,
- send: sigd_send
+ .close = sigd_close,
+ .send = sigd_send
};
static struct atm_dev sigd_dev = {
- &sigd_dev_ops,
- NULL, /* no PHY */
- "sig", /* type */
- 999, /* dummy device number */
- NULL,NULL, /* pretend not to have any VCCs */
- NULL,NULL, /* no data */
- { 0 }, /* no flags */
- NULL, /* no local address */
- { 0 } /* no ESI, no statistics */
+ .ops = &sigd_dev_ops,
+ .type = "sig",
+ .number = 999,
+ .lock = SPIN_LOCK_UNLOCKED
};
-
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