Eric Lee / smarc-ti-linux-kernel

21 Sep, 2006

2 commits

  • 560c06ae1   [CRYPTO] api: Get rid of flags argument to setkey ... Browse Code »

    Now that the tfm is passed directly to setkey instead of the ctx, we no
    longer need to pass the &tfm->crt_flags pointer.

    This patch also gets rid of a few unnecessary checks on the key length
    for ciphers as the cipher layer guarantees that the key length is within
    the bounds specified by the algorithm.

    Rather than testing dia_setkey every time, this patch does it only once
    during crypto_alloc_tfm. The redundant check from crypto_digest_setkey
    is also removed.

    Signed-off-by: Herbert Xu

    Herbert Xu
     
  • b9f535ffe   [CRYPTO] twofish: i586 assembly version ... Browse Code »

    The patch passed the trycpt tests and automated filesystem tests.
    This rewrite resulted in some nice perfomance increase over my last patch.

    Short summary of the tcrypt benchmarks:

    Twofish Assembler vs. Twofish C (256bit 8kb block CBC)
    encrypt: -33% Cycles
    decrypt: -45% Cycles

    Twofish Assembler vs. AES Assembler (128bit 8kb block CBC)
    encrypt: +3% Cycles
    decrypt: -22% Cycles

    Twofish Assembler vs. AES Assembler (256bit 8kb block CBC)
    encrypt: -20% Cycles
    decrypt: -36% Cycles

    Full Output:
    http://homepages.tu-darmstadt.de/~fritschi/twofish/tcrypt-speed-twofish-asm-i586.txt
    http://homepages.tu-darmstadt.de/~fritschi/twofish/tcrypt-speed-twofish-c-i586.txt
    http://homepages.tu-darmstadt.de/~fritschi/twofish/tcrypt-speed-aes-asm-i586.txt

    Here is another bonnie++ benchmark with encrypted filesystems. All runs with
    the twofish assembler modules max out the drivespeed. It should give some
    idea what the module can do for encrypted filesystem performance even though
    you can't see the full numbers.

    http://homepages.tu-darmstadt.de/~fritschi/twofish/output_20060611_205432_x86.html

    Signed-off-by: Joachim Fritschi
    Signed-off-by: Herbert Xu

    Joachim Fritschi
     

26 Jun, 2006

3 commits

  • e90b1a2be   [CRYPTO] aes: Add wrappers for assembly routines ... Browse Code »

    The wrapper routines are required when asmlinkage differs from the usual
    calling convention. So we need to have them. However, by rearranging
    the parameters, they will get optimised away to a single jump for most
    people.

    Signed-off-by: Herbert Xu

    Herbert Xu
     
  • 6c2bb98bc   [CRYPTO] all: Pass tfm instead of ctx to algorithms ... Browse Code »

    Up until now algorithms have been happy to get a context pointer since
    they know everything that's in the tfm already (e.g., alignment, block
    size).

    However, once we have parameterised algorithms, such information will
    be specific to each tfm. So the algorithm API needs to be changed to
    pass the tfm structure instead of the context pointer.

    This patch is basically a text substitution. The only tricky bit is
    the assembly routines that need to get the context pointer offset
    through asm-offsets.h.

    Signed-off-by: Herbert Xu

    Herbert Xu
     
  • 8b55ba030   [CRYPTO] aes-i586: Get rid of useless function wrappers ... Browse Code »

    The wrappers aes_encrypt/aes_decrypt simply reverse the order of the
    function arguments. It's just as easy to get the actual assembly code
    to read them in the opposite order.

    Signed-off-by: Herbert Xu

    Herbert Xu
     

10 Jan, 2006

4 commits

26 Jun, 2005

1 commit

17 Apr, 2005

1 commit

  • 1da177e4c   Linux-2.6.12-rc2 ... Browse Code »
    212

    Initial git repository build. I'm not bothering with the full history,
    even though we have it. We can create a separate "historical" git
    archive of that later if we want to, and in the meantime it's about
    3.2GB when imported into git - space that would just make the early
    git days unnecessarily complicated, when we don't have a lot of good
    infrastructure for it.

    Let it rip!

    Linus Torvalds