![Stephen Hemminger](/assets/img/avatar_default.png)
The code for frame diverter is unmaintained and has bitrotted. The number of users is very small and the code has lots of problems. If anyone is using it, they maybe exposing themselves to bad packet attacks. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
297 lines
11 KiB
Plaintext
297 lines
11 KiB
Plaintext
The following is a list of files and features that are going to be
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removed in the kernel source tree. Every entry should contain what
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exactly is going away, why it is happening, and who is going to be doing
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the work. When the feature is removed from the kernel, it should also
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be removed from this file.
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---------------------------
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What: RAW driver (CONFIG_RAW_DRIVER)
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When: December 2005
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Why: declared obsolete since kernel 2.6.3
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O_DIRECT can be used instead
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Who: Adrian Bunk <bunk@stusta.de>
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---------------------------
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What: drivers that were depending on OBSOLETE_OSS_DRIVER
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(config options already removed)
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When: before 2.6.19
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Why: OSS drivers with ALSA replacements
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Who: Adrian Bunk <bunk@stusta.de>
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---------------------------
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What: raw1394: requests of type RAW1394_REQ_ISO_SEND, RAW1394_REQ_ISO_LISTEN
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When: November 2006
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Why: Deprecated in favour of the new ioctl-based rawiso interface, which is
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more efficient. You should really be using libraw1394 for raw1394
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access anyway.
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Who: Jody McIntyre <scjody@modernduck.com>
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---------------------------
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What: sbp2: module parameter "force_inquiry_hack"
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When: July 2006
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Why: Superceded by parameter "workarounds". Both parameters are meant to be
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used ad-hoc and for single devices only, i.e. not in modprobe.conf,
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therefore the impact of this feature replacement should be low.
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Who: Stefan Richter <stefanr@s5r6.in-berlin.de>
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What: Video4Linux API 1 ioctls and video_decoder.h from Video devices.
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When: July 2006
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Why: V4L1 AP1 was replaced by V4L2 API. during migration from 2.4 to 2.6
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series. The old API have lots of drawbacks and don't provide enough
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means to work with all video and audio standards. The newer API is
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already available on the main drivers and should be used instead.
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Newer drivers should use v4l_compat_translate_ioctl function to handle
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old calls, replacing to newer ones.
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Decoder iocts are using internally to allow video drivers to
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communicate with video decoders. This should also be improved to allow
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V4L2 calls being translated into compatible internal ioctls.
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Who: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
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What: PCMCIA control ioctl (needed for pcmcia-cs [cardmgr, cardctl])
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When: November 2005
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Files: drivers/pcmcia/: pcmcia_ioctl.c
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Why: With the 16-bit PCMCIA subsystem now behaving (almost) like a
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normal hotpluggable bus, and with it using the default kernel
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infrastructure (hotplug, driver core, sysfs) keeping the PCMCIA
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control ioctl needed by cardmgr and cardctl from pcmcia-cs is
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unnecessary, and makes further cleanups and integration of the
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PCMCIA subsystem into the Linux kernel device driver model more
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difficult. The features provided by cardmgr and cardctl are either
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handled by the kernel itself now or are available in the new
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pcmciautils package available at
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http://kernel.org/pub/linux/utils/kernel/pcmcia/
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Who: Dominik Brodowski <linux@brodo.de>
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What: ip_queue and ip6_queue (old ipv4-only and ipv6-only netfilter queue)
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When: December 2005
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Why: This interface has been obsoleted by the new layer3-independent
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"nfnetlink_queue". The Kernel interface is compatible, so the old
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ip[6]tables "QUEUE" targets still work and will transparently handle
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all packets into nfnetlink queue number 0. Userspace users will have
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to link against API-compatible library on top of libnfnetlink_queue
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instead of the current 'libipq'.
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Who: Harald Welte <laforge@netfilter.org>
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What: remove EXPORT_SYMBOL(kernel_thread)
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When: August 2006
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Files: arch/*/kernel/*_ksyms.c
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Why: kernel_thread is a low-level implementation detail. Drivers should
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use the <linux/kthread.h> API instead which shields them from
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implementation details and provides a higherlevel interface that
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prevents bugs and code duplication
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Who: Christoph Hellwig <hch@lst.de>
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What: CONFIG_FORCED_INLINING
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When: June 2006
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Why: Config option is there to see if gcc is good enough. (in january
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2006). If it is, the behavior should just be the default. If it's not,
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the option should just go away entirely.
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Who: Arjan van de Ven
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What: START_ARRAY ioctl for md
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When: July 2006
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Files: drivers/md/md.c
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Why: Not reliable by design - can fail when most needed.
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Alternatives exist
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Who: NeilBrown <neilb@suse.de>
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What: eepro100 network driver
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When: January 2007
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Why: replaced by the e100 driver
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Who: Adrian Bunk <bunk@stusta.de>
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What: drivers depending on OSS_OBSOLETE_DRIVER
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When: options in 2.6.20, code in 2.6.22
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Why: OSS drivers with ALSA replacements
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Who: Adrian Bunk <bunk@stusta.de>
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What: pci_module_init(driver)
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When: January 2007
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Why: Is replaced by pci_register_driver(pci_driver).
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Who: Richard Knutsson <ricknu-0@student.ltu.se> and Greg Kroah-Hartman <gregkh@suse.de>
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What: Usage of invalid timevals in setitimer
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When: March 2007
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Why: POSIX requires to validate timevals in the setitimer call. This
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was never done by Linux. The invalid (e.g. negative timevals) were
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silently converted to more or less random timeouts and intervals.
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Until the removal a per boot limited number of warnings is printed
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and the timevals are sanitized.
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Who: Thomas Gleixner <tglx@linutronix.de>
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What: I2C interface of the it87 driver
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When: January 2007
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Why: The ISA interface is faster and should be always available. The I2C
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probing is also known to cause trouble in at least one case (see
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bug #5889.)
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Who: Jean Delvare <khali@linux-fr.org>
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---------------------------
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What: Unused EXPORT_SYMBOL/EXPORT_SYMBOL_GPL exports
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(temporary transition config option provided until then)
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The transition config option will also be removed at the same time.
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When: before 2.6.19
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Why: Unused symbols are both increasing the size of the kernel binary
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and are often a sign of "wrong API"
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Who: Arjan van de Ven <arjan@linux.intel.com>
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What: mount/umount uevents
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When: February 2007
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Why: These events are not correct, and do not properly let userspace know
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when a file system has been mounted or unmounted. Userspace should
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poll the /proc/mounts file instead to detect this properly.
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Who: Greg Kroah-Hartman <gregkh@suse.de>
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What: USB driver API moves to EXPORT_SYMBOL_GPL
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When: Febuary 2008
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Files: include/linux/usb.h, drivers/usb/core/driver.c
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Why: The USB subsystem has changed a lot over time, and it has been
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possible to create userspace USB drivers using usbfs/libusb/gadgetfs
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that operate as fast as the USB bus allows. Because of this, the USB
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subsystem will not be allowing closed source kernel drivers to
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register with it, after this grace period is over. If anyone needs
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any help in converting their closed source drivers over to use the
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userspace filesystems, please contact the
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linux-usb-devel@lists.sourceforge.net mailing list, and the developers
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there will be glad to help you out.
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Who: Greg Kroah-Hartman <gregkh@suse.de>
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---------------------------
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What: find_trylock_page
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When: January 2007
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Why: The interface no longer has any callers left in the kernel. It
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is an odd interface (compared with other find_*_page functions), in
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that it does not take a refcount to the page, only the page lock.
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It should be replaced with find_get_page or find_lock_page if possible.
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This feature removal can be reevaluated if users of the interface
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cannot cleanly use something else.
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Who: Nick Piggin <npiggin@suse.de>
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What: Support for the MIPS EV96100 evaluation board
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When: September 2006
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Why: Does no longer build since at least November 15, 2003, apparently
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no userbase left.
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Who: Ralf Baechle <ralf@linux-mips.org>
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What: Support for the Momentum / PMC-Sierra Jaguar ATX evaluation board
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When: September 2006
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Why: Does no longer build since quite some time, and was never popular,
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due to the platform being replaced by successor models. Apparently
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no user base left. It also is one of the last users of
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WANT_PAGE_VIRTUAL.
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Who: Ralf Baechle <ralf@linux-mips.org>
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What: Support for the Momentum Ocelot, Ocelot 3, Ocelot C and Ocelot G
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When: September 2006
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Why: Some do no longer build and apparently there is no user base left
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for these platforms.
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Who: Ralf Baechle <ralf@linux-mips.org>
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What: Support for MIPS Technologies' Altas and SEAD evaluation board
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When: September 2006
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Why: Some do no longer build and apparently there is no user base left
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for these platforms. Hardware out of production since several years.
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Who: Ralf Baechle <ralf@linux-mips.org>
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What: Support for the IT8172-based platforms, ITE 8172G and Globespan IVR
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When: September 2006
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Why: Code does no longer build since at least 2.6.0, apparently there is
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no user base left for these platforms. Hardware out of production
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since several years and hardly a trace of the manufacturer left on
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the net.
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Who: Ralf Baechle <ralf@linux-mips.org>
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What: Interrupt only SA_* flags
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When: Januar 2007
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Why: The interrupt related SA_* flags are replaced by IRQF_* to move them
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out of the signal namespace.
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Who: Thomas Gleixner <tglx@linutronix.de>
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What: i2c-ite and i2c-algo-ite drivers
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When: September 2006
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Why: These drivers never compiled since they were added to the kernel
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tree 5 years ago. This feature removal can be reevaluated if
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someone shows interest in the drivers, fixes them and takes over
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maintenance.
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http://marc.theaimsgroup.com/?l=linux-mips&m=115040510817448
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Who: Jean Delvare <khali@linux-fr.org>
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What: Bridge netfilter deferred IPv4/IPv6 output hook calling
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When: January 2007
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Why: The deferred output hooks are a layering violation causing unusual
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and broken behaviour on bridge devices. Examples of things they
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break include QoS classifation using the MARK or CLASSIFY targets,
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the IPsec policy match and connection tracking with VLANs on a
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bridge. Their only use is to enable bridge output port filtering
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within iptables with the physdev match, which can also be done by
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combining iptables and ebtables using netfilter marks. Until it
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will get removed the hook deferral is disabled by default and is
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only enabled when needed.
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Who: Patrick McHardy <kaber@trash.net>
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What: frame diverter
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When: November 2006
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Why: The frame diverter is included in most distribution kernels, but is
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broken. It does not correctly handle many things:
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- IPV6
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- non-linear skb's
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- network device RCU on removal
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- input frames not correctly checked for protocol errors
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It also adds allocation overhead even if not enabled.
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It is not clear if anyone is still using it.
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Who: Stephen Hemminger <shemminger@osdl.org>
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