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authorFelix Beck <felix.beck@de.ibm.com>2009-12-07 12:51:55 +0100
committerMartin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com>2009-12-07 12:51:35 +0100
commita6a5d73a56540b5e59dff83bc8f2b2725591346a (patch)
tree84a293aa41b9326cebcc38afc069d839b76da2f7 /drivers/s390/crypto/zcrypt_pcixcc.c
parent468ffddf19c1417947cac931c240b0d600e4b5bf (diff)
[S390] zcrypt: special command support for cex3 exploitation
Support for special command is implemented in the AP Bus in the NQAP function __ap_send. This is extended for a further parameter special. When set, the special bit, in GR0 will be set. Therefor the ap_message struct is extended for a further bit. Thus calling functions of __ap_send can use the special parameter in ap_message to give to __ap_send. Affected is in the first place ap_queue_message, which is called by the actual card driver. The second part of this support is that the card driver for the CEX3C needs to set this special bit, when an according CPRB is sent to the driver. Signed-off-by: Felix Beck <felix.beck@de.ibm.com> Signed-off-by: Ralph Wuerthner <ralph.wuerthner@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/crypto/zcrypt_pcixcc.c')
-rw-r--r--drivers/s390/crypto/zcrypt_pcixcc.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/s390/crypto/zcrypt_pcixcc.c b/drivers/s390/crypto/zcrypt_pcixcc.c
index 11ca6dc99b23..addaaddaf994 100644
--- a/drivers/s390/crypto/zcrypt_pcixcc.c
+++ b/drivers/s390/crypto/zcrypt_pcixcc.c
@@ -326,6 +326,11 @@ static int XCRB_msg_to_type6CPRB_msgX(struct zcrypt_device *zdev,
function_code = ((unsigned char *)&msg->cprbx) + msg->cprbx.cprb_len;
memcpy(msg->hdr.function_code, function_code, sizeof(msg->hdr.function_code));
+ if (memcmp(function_code, "US", 2) == 0)
+ ap_msg->special = 1;
+ else
+ ap_msg->special = 0;
+
/* copy data block */
if (xcRB->request_data_length &&
copy_from_user(req_data, xcRB->request_data_address,