X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fs390%2Fcrypto%2Fzcrypt_api.h;h=0e948528a73a8ba0b9276b454acfbb8421ec8013;hb=2f7c8bd6dc6540aa3275c0ad9f657401985c00e9;hp=de4877ee618f99f278ec7136f358882c07e6aa79;hpb=893f11286644780fc7d6d415e537644da7bdaaf8;p=linux-2.6

diff --git a/drivers/s390/crypto/zcrypt_api.h b/drivers/s390/crypto/zcrypt_api.h
index de4877ee61..0e948528a7 100644
--- a/drivers/s390/crypto/zcrypt_api.h
+++ b/drivers/s390/crypto/zcrypt_api.h
@@ -100,6 +100,13 @@ struct ica_z90_status {
 #define ZCRYPT_CEX2C		5
 #define ZCRYPT_CEX2A		6
 
+/**
+ * Large random numbers are pulled in 4096 byte chunks from the crypto cards
+ * and stored in a page. Be carefull when increasing this buffer due to size
+ * limitations for AP requests.
+ */
+#define ZCRYPT_RNG_BUFFER_SIZE	4096
+
 struct zcrypt_device;
 
 struct zcrypt_ops {
@@ -107,6 +114,7 @@ struct zcrypt_ops {
 	long (*rsa_modexpo_crt)(struct zcrypt_device *,
 				struct ica_rsa_modexpo_crt *);
 	long (*send_cprb)(struct zcrypt_device *, struct ica_xcRB *);
+	long (*rng)(struct zcrypt_device *, char *);
 };
 
 struct zcrypt_device {