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scsi: zfcp: log FC Endpoint Security errors 

Log any FC Endpoint Security errors to the kernel ring buffer with rate-
limiting.

Link: https://lore.kernel.org/r/20200312174505.51294-11-maier@linux.ibm.com
Reviewed-by: Steffen Maier <maier@linux.ibm.com>
Signed-off-by: Jens Remus <jremus@linux.ibm.com>
Signed-off-by: Steffen Maier <maier@linux.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Jens Remus 2020-03-12 18:45:05 +01:00 committed by Martin K. Petersen
parent e53d92856e
commit 42cabdaf10
2 changed files with 70 additions and 0 deletions
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62
drivers/s390/scsi/zfcp_fsf.c
View File

@ -1647,6 +1647,62 @@ out:
port->connection_info_old = port->connection_info;
}
static void zfcp_fsf_log_security_error(const struct device *dev, u32 fsf_sqw0,
u64 wwpn)
{
switch (fsf_sqw0) {
/*
* Open Port command error codes
*/
case FSF_SQ_SECURITY_REQUIRED:
dev_warn_ratelimited(dev,
"FC Endpoint Security error: FC security is required but not supported or configured on remote port 0x%016llx\n",
wwpn);
break;
case FSF_SQ_SECURITY_TIMEOUT:
dev_warn_ratelimited(dev,
"FC Endpoint Security error: a timeout prevented opening remote port 0x%016llx\n",
wwpn);
break;
case FSF_SQ_SECURITY_KM_UNAVAILABLE:
dev_warn_ratelimited(dev,
"FC Endpoint Security error: opening remote port 0x%016llx failed because local and external key manager cannot communicate\n",
wwpn);
break;
case FSF_SQ_SECURITY_RKM_UNAVAILABLE:
dev_warn_ratelimited(dev,
"FC Endpoint Security error: opening remote port 0x%016llx failed because it cannot communicate with the external key manager\n",
wwpn);
break;
case FSF_SQ_SECURITY_AUTH_FAILURE:
dev_warn_ratelimited(dev,
"FC Endpoint Security error: the device could not verify the identity of remote port 0x%016llx\n",
wwpn);
break;
/*
* Send FCP command error codes
*/
case FSF_SQ_SECURITY_ENC_FAILURE:
dev_warn_ratelimited(dev,
"FC Endpoint Security error: FC connection to remote port 0x%016llx closed because encryption broke down\n",
wwpn);
break;
/*
* Unknown error codes
*/
default:
dev_warn_ratelimited(dev,
"FC Endpoint Security error: the device issued an unknown error code 0x%08x related to the FC connection to remote port 0x%016llx\n",
fsf_sqw0, wwpn);
}
}
static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req)
{
struct zfcp_adapter *adapter = req->adapter;
@ -1671,6 +1727,9 @@ static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req)
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_SECURITY_ERROR:
zfcp_fsf_log_security_error(&req->adapter->ccw_device->dev,
header->fsf_status_qual.word[0],
port->wwpn);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_ADAPTER_STATUS_AVAILABLE:
@ -2404,6 +2463,9 @@ static void zfcp_fsf_fcp_handler_common(struct zfcp_fsf_req *req,
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_SECURITY_ERROR:
zfcp_fsf_log_security_error(&req->adapter->ccw_device->dev,
header->fsf_status_qual.word[0],
zfcp_sdev->port->wwpn);
zfcp_erp_port_forced_reopen(zfcp_sdev->port, 0, "fssfch7");
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;

8
drivers/s390/scsi/zfcp_fsf.h
View File

@ -111,6 +111,14 @@
#define FSF_PSQ_LINK_MODE_TABLE_CURRUPTED 0x00004000
#define FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT 0x00008000
/* FSF status qualifier, security error */
#define FSF_SQ_SECURITY_REQUIRED 0x00000001
#define FSF_SQ_SECURITY_TIMEOUT 0x00000002
#define FSF_SQ_SECURITY_KM_UNAVAILABLE 0x00000003
#define FSF_SQ_SECURITY_RKM_UNAVAILABLE 0x00000004
#define FSF_SQ_SECURITY_AUTH_FAILURE 0x00000005
#define FSF_SQ_SECURITY_ENC_FAILURE 0x00000010
/* payload size in status read buffer */
#define FSF_STATUS_READ_PAYLOAD_SIZE 4032