From c2567f8ffa2704f6f2f81013e9a590deca5a865f Mon Sep 17 00:00:00 2001 From: Felix Beck Date: Wed, 5 Jan 2011 12:47:47 +0100 Subject: [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 Signed-off-by: Martin Schwidefsky --- drivers/s390/crypto/zcrypt_api.h | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/s390/crypto/zcrypt_api.h') diff --git a/drivers/s390/crypto/zcrypt_api.h b/drivers/s390/crypto/zcrypt_api.h index 8e7ffbf2466c..88ebd114735b 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); -- cgit v1.2.3