diff options
| author | Milan Broz <mbroz@redhat.com> | 2011-01-13 19:59:54 +0000 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2011-01-13 19:59:54 +0000 |
| commit | d1f9642381847e2b94caa34c3533211cf36ffcf4 (patch) | |
| tree | 32ae1cc4b0946247384fe1a31e257658f734b3f7 /ipc/compat.c | |
| parent | 2dc5327d3acb3340ab6fa3981401b076b78a51f4 (diff) | |
| download | op-kernel-dev-d1f9642381847e2b94caa34c3533211cf36ffcf4.zip op-kernel-dev-d1f9642381847e2b94caa34c3533211cf36ffcf4.tar.gz | |
dm crypt: add multi key capability
This patch adds generic multikey handling to be used
in following patch for Loop-AES mode compatibility.
This patch extends mapping table to optional keycount and
implements generic multi-key capability.
With more keys defined the <key> string is divided into
several <keycount> sections and these are used for tfms.
The tfm is used according to sector offset
(sector 0->tfm[0], sector 1->tfm[1], sector N->tfm[N modulo keycount])
(only power of two values supported for keycount here).
Because of tfms per-cpu allocation, this mode can be take
a lot of memory on large smp systems.
Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Cc: Max Vozeler <max@hinterhof.net>
Diffstat (limited to 'ipc/compat.c')
0 files changed, 0 insertions, 0 deletions
