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author | Felix Beck <felix.beck@de.ibm.com> | 2011-01-05 11:47:47 (GMT) |
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committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2011-01-05 11:47:27 (GMT) |
commit | c2567f8ffa2704f6f2f81013e9a590deca5a865f (patch) | |
tree | 83c71b7139d21b51166f085f08bcefcaaa808b93 /drivers/s390/crypto/zcrypt_api.h | |
parent | 2ade1fab026b4a103f0105ec4b47654fc2f729c7 (diff) | |
download | linux-fsl-qoriq-c2567f8ffa2704f6f2f81013e9a590deca5a865f.tar.xz |
[S390] zcrypt: cope with cca restriction of cex3
The cca on the crypto adapter has a restriction in the size of the
exponent if a key with a modulus bigger than 2048 bit is used. Thus
in that case we have to avoid that the crypto device driver thinks
the adapter is defect and sets it offline. Therfore a new member for
the zcrypt_device struct called max_exp_bit_length is introduced. This
will be set the first time the cca returns the error code function
not implemented. If this is done with an adapter twice it will return
-EINVAL.
Signed-off-by: Felix Beck <felix.beck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/crypto/zcrypt_api.h')
-rw-r--r-- | drivers/s390/crypto/zcrypt_api.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/s390/crypto/zcrypt_api.h b/drivers/s390/crypto/zcrypt_api.h index 8e7ffbf..88ebd11 100644 --- a/drivers/s390/crypto/zcrypt_api.h +++ b/drivers/s390/crypto/zcrypt_api.h @@ -109,6 +109,7 @@ struct zcrypt_device { int request_count; /* # current requests. */ struct ap_message reply; /* Per-device reply structure. */ + int max_exp_bit_length; }; struct zcrypt_device *zcrypt_device_alloc(size_t); |