linux-toradex.git/crypto/scatterwalk.c, branch T20_LinuxImageV2.0Beta1_20121218

crypto: scatterwalk - Fix scatterwalk_done() test

2010-05-19T04:06:29+00:00

We are done with the scattergather entry when the walk offset goes
past sg->offset + sg->length, not when it crosses a page boundary.

There is a similarly queer test in the second half of
scatterwalk_pagedone() that probably needs some scrutiny.

Signed-off-by: David S. Miller 
Signed-off-by: Herbert Xu

crypto: scatterwalk - Avoid flush_dcache_page on slab pages

2009-02-09T03:30:25+00:00

It's illegal to call flush_dcache_page on slab pages on a number
of architectures.  So this patch avoids doing so if PageSlab is
true.

In future we can move the flush_dcache_page call to those page
cache users that actually need it.

Reported-by: David S. Miller 
Signed-off-by: Herbert Xu

[CRYPTO] scatterwalk: Handle zero nbytes in scatterwalk_map_and_copy

2008-01-10T21:16:54+00:00

It's better to return silently than crash and burn when someone feeds us
a zero length.  In particular the null digest algorithm when used as part
of authenc will do that to us.

Signed-off-by: Herbert Xu

[CRYPTO] scatterwalk: Restore custom sg chaining for now

2008-01-10T21:16:33+00:00

Unfortunately the generic chaining hasn't been ported to all architectures
yet, and notably not s390.  So this patch restores the chainging that we've
been using previously which does work everywhere.

Signed-off-by: Herbert Xu

[CRYPTO] scatterwalk: Move scatterwalk.h to linux/crypto

2008-01-10T21:16:32+00:00

The scatterwalk infrastructure is used by algorithms so it needs to
move out of crypto for future users that may live in drivers/crypto
or asm/*/crypto.

Signed-off-by: Herbert Xu

[CRYPTO] scatterwalk: Use generic scatterlist chaining

2008-01-10T21:16:14+00:00

This patch converts the crypto scatterwalk code to use the generic
scatterlist chaining rather the version specific to crypto.

Signed-off-by: Herbert Xu

[SG] Update crypto/ to sg helpers

2007-10-22T17:40:16+00:00

Signed-off-by: Jens Axboe

crypto: don't pollute the global namespace with sg_next()

2007-10-16T09:07:09+00:00

It's a subsystem function, prefix it as such.

Acked-by: Herbert Xu 
Signed-off-by: Jens Axboe

[CRYPTO] api: Kill crypto_km_types

2007-10-10T23:55:44+00:00

When scatterwalk is built as a module digest.c was broken because it
requires the crypto_km_types structure which is in scatterwalk.  This
patch removes the crypto_km_types structure by encoding the logic into
crypto_kmap_type directly.

In fact, this even saves a few bytes of code (not to mention the data
structure itself) on i386 which is about the only place where it's
needed.

Signed-off-by: Herbert Xu

[CRYPTO] scatterwalk: Add scatterwalk_map_and_copy

2007-10-10T23:55:42+00:00

This patch adds the function scatterwalk_map_and_copy which reads or
writes a chunk of data from a scatterlist at a given offset.  It will
be used by authenc which would read/write the authentication data at
the end of the cipher/plain text.

Signed-off-by: Herbert Xu