Eric Lee / smarc-fsl-linux-kernel

28 Jul, 2017

1 commit

10 Jun, 2017

1 commit

13 Jan, 2017

1 commit

  • d8c34b949   crypto: Replaced gcc specific attributes with macros from compiler.h ... Browse Code »

    Continuing from this commit: 52f5684c8e1e
    ("kernel: use macros from compiler.h instead of __attribute__((...))")

    I submitted 4 total patches. They are part of task I've taken up to
    increase compiler portability in the kernel. I've cleaned up the
    subsystems under /kernel /mm /block and /security, this patch targets
    /crypto.

    There is which provides macros for various gcc specific
    constructs. Eg: __weak for __attribute__((weak)). I've cleaned all
    instances of gcc specific attributes with the right macros for the crypto
    subsystem.

    I had to make one additional change into compiler-gcc.h for the case when
    one wants to use this: __attribute__((aligned) and not specify an alignment
    factor. From the gcc docs, this will result in the largest alignment for
    that data type on the target machine so I've named the macro
    __aligned_largest. Please advise if another name is more appropriate.

    Signed-off-by: Gideon Israel Dsouza
    Signed-off-by: Herbert Xu

    Gideon Israel Dsouza
     

22 Jun, 2015

1 commit

  • 7cecadb7c   crypto: rng - Do not free default RNG when it becomes unused ... Browse Code »

    Currently we free the default RNG when its use count hits zero.
    This was OK when the IV generators would latch onto the RNG at
    instance creation time and keep it until the instance is torn
    down.

    Now that IV generators only keep the RNG reference during init
    time this scheme causes the default RNG to come and go at a high
    frequencey. This is highly undesirable as we want to keep a single
    RNG in use unless the admin wants it to be removed.

    This patch changes the scheme so that the system RNG once allocated
    is never removed unless a specifically requested.

    Signed-off-by: Herbert Xu

    Herbert Xu
     

22 Apr, 2015

5 commits

21 Apr, 2015

2 commits

  • ff030b099   crypto: rng - Introduce crypto_rng_generate ... Browse Code »

    This patch adds the new top-level function crypto_rng_generate
    which generates random numbers with additional input. It also
    extends the mid-level rng_gen_random function to take additional
    data as input.

    Signed-off-by: Herbert Xu

    Herbert Xu
     
  • d0e83059a   crypto: rng - Convert crypto_rng to new style crypto_type ... Browse Code »

    This patch converts the top-level crypto_rng to the "new" style.
    It was the last algorithm type added before we switched over
    to the new way of doing things exemplified by shash.

    All users will automatically switch over to the new interface.

    Note that this patch does not touch the low-level interface to
    rng implementations.

    Signed-off-by: Herbert Xu

    Herbert Xu
     

19 Feb, 2013

1 commit

  • 9a5467bf7   crypto: user - fix info leaks in report API ... Browse Code »

    Three errors resulting in kernel memory disclosure:

    1/ The structures used for the netlink based crypto algorithm report API
    are located on the stack. As snprintf() does not fill the remainder of
    the buffer with null bytes, those stack bytes will be disclosed to users
    of the API. Switch to strncpy() to fix this.

    2/ crypto_report_one() does not initialize all field of struct
    crypto_user_alg. Fix this to fix the heap info leak.

    3/ For the module name we should copy only as many bytes as
    module_name() returns -- not as much as the destination buffer could
    hold. But the current code does not and therefore copies random data
    from behind the end of the module name, as the module name is always
    shorter than CRYPTO_MAX_ALG_NAME.

    Also switch to use strncpy() to copy the algorithm's name and
    driver_name. They are strings, after all.

    Signed-off-by: Mathias Krause
    Cc: Steffen Klassert
    Signed-off-by: Herbert Xu

    Mathias Krause
     

02 Apr, 2012

1 commit

11 Nov, 2011

1 commit

21 Oct, 2011

1 commit

27 Jul, 2011

1 commit

  • 60063497a   atomic: use <linux/atomic.h> ... Browse Code »

    This allows us to move duplicated code in
    (atomic_inc_not_zero() for now) to

    Signed-off-by: Arun Sharma
    Reviewed-by: Eric Dumazet
    Cc: Ingo Molnar
    Cc: David Miller
    Cc: Eric Dumazet
    Acked-by: Mike Frysinger
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Arun Sharma
     

30 Mar, 2010

1 commit

  • 5a0e3ad6a   include cleanup: Update gfp.h and slab.h includes to prepare for breaking implic… ... Browse Code »

    …it slab.h inclusion from percpu.h

    percpu.h is included by sched.h and module.h and thus ends up being
    included when building most .c files. percpu.h includes slab.h which
    in turn includes gfp.h making everything defined by the two files
    universally available and complicating inclusion dependencies.

    percpu.h -> slab.h dependency is about to be removed. Prepare for
    this change by updating users of gfp and slab facilities include those
    headers directly instead of assuming availability. As this conversion
    needs to touch large number of source files, the following script is
    used as the basis of conversion.

    http://userweb.kernel.org/~tj/misc/slabh-sweep.py

    The script does the followings.

    * Scan files for gfp and slab usages and update includes such that
    only the necessary includes are there. ie. if only gfp is used,
    gfp.h, if slab is used, slab.h.

    * When the script inserts a new include, it looks at the include
    blocks and try to put the new include such that its order conforms
    to its surrounding. It's put in the include block which contains
    core kernel includes, in the same order that the rest are ordered -
    alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
    doesn't seem to be any matching order.

    * If the script can't find a place to put a new include (mostly
    because the file doesn't have fitting include block), it prints out
    an error message indicating which .h file needs to be added to the
    file.

    The conversion was done in the following steps.

    1. The initial automatic conversion of all .c files updated slightly
    over 4000 files, deleting around 700 includes and adding ~480 gfp.h
    and ~3000 slab.h inclusions. The script emitted errors for ~400
    files.

    2. Each error was manually checked. Some didn't need the inclusion,
    some needed manual addition while adding it to implementation .h or
    embedding .c file was more appropriate for others. This step added
    inclusions to around 150 files.

    3. The script was run again and the output was compared to the edits
    from #2 to make sure no file was left behind.

    4. Several build tests were done and a couple of problems were fixed.
    e.g. lib/decompress_*.c used malloc/free() wrappers around slab
    APIs requiring slab.h to be added manually.

    5. The script was run on all .h files but without automatically
    editing them as sprinkling gfp.h and slab.h inclusions around .h
    files could easily lead to inclusion dependency hell. Most gfp.h
    inclusion directives were ignored as stuff from gfp.h was usually
    wildly available and often used in preprocessor macros. Each
    slab.h inclusion directive was examined and added manually as
    necessary.

    6. percpu.h was updated not to include slab.h.

    7. Build test were done on the following configurations and failures
    were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
    distributed build env didn't work with gcov compiles) and a few
    more options had to be turned off depending on archs to make things
    build (like ipr on powerpc/64 which failed due to missing writeq).

    * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
    * powerpc and powerpc64 SMP allmodconfig
    * sparc and sparc64 SMP allmodconfig
    * ia64 SMP allmodconfig
    * s390 SMP allmodconfig
    * alpha SMP allmodconfig
    * um on x86_64 SMP allmodconfig

    8. percpu.h modifications were reverted so that it could be applied as
    a separate patch and serve as bisection point.

    Given the fact that I had only a couple of failures from tests on step
    6, I'm fairly confident about the coverage of this conversion patch.
    If there is a breakage, it's likely to be something in one of the arch
    headers which should be easily discoverable easily on most builds of
    the specific arch.

    Signed-off-by: Tejun Heo <tj@kernel.org>
    Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
    Cc: Ingo Molnar <mingo@redhat.com>
    Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>

    Tejun Heo
     

13 Aug, 2009

1 commit

29 Aug, 2008

1 commit

  • 17f0f4a47   crypto: rng - RNG interface and implementation ... Browse Code »

    This patch adds a random number generator interface as well as a
    cryptographic pseudo-random number generator based on AES. It is
    meant to be used in cases where a deterministic CPRNG is required.

    One of the first applications will be as an input in the IPsec IV
    generation process.

    Signed-off-by: Neil Horman
    Signed-off-by: Herbert Xu

    Neil Horman