diff options
Diffstat (limited to 'drivers/s390/scsi/zfcp_fsf.c')
| -rw-r--r-- | drivers/s390/scsi/zfcp_fsf.c | 46 |
1 files changed, 41 insertions, 5 deletions
diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c index cf63916814cc..d8f0e446fe13 100644 --- a/drivers/s390/scsi/zfcp_fsf.c +++ b/drivers/s390/scsi/zfcp_fsf.c @@ -585,6 +585,8 @@ static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req) &adapter->status); break; case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: + req->status |= ZFCP_STATUS_FSFREQ_XDATAINCOMPLETE; + fc_host_node_name(shost) = 0; fc_host_port_name(shost) = 0; fc_host_port_id(shost) = 0; @@ -663,6 +665,8 @@ static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req) zfcp_fsf_exchange_port_evaluate(req); break; case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: + req->status |= ZFCP_STATUS_FSFREQ_XDATAINCOMPLETE; + zfcp_fsf_exchange_port_evaluate(req); zfcp_fsf_link_down_info_eval(req, &qtcb->header.fsf_status_qual.link_down_info); @@ -1278,6 +1282,19 @@ out: return retval; } + +/** + * zfcp_fsf_exchange_config_data_sync() - Request information about FCP channel. + * @qdio: pointer to the QDIO-Queue to use for sending the command. + * @data: pointer to the QTCB-Bottom for storing the result of the command, + * might be %NULL. + * + * Returns: + * * 0 - Exchange Config Data was successful, @data is complete + * * -EIO - Exchange Config Data was not successful, @data is invalid + * * -EAGAIN - @data contains incomplete data + * * -ENOMEM - Some memory allocation failed along the way + */ int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *qdio, struct fsf_qtcb_bottom_config *data) { @@ -1309,9 +1326,16 @@ int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *qdio, zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); retval = zfcp_fsf_req_send(req); spin_unlock_irq(&qdio->req_q_lock); + if (!retval) { /* NOTE: ONLY TOUCH SYNC req AGAIN ON req->completion. */ wait_for_completion(&req->completion); + + if (req->status & + (ZFCP_STATUS_FSFREQ_ERROR | ZFCP_STATUS_FSFREQ_DISMISSED)) + retval = -EIO; + else if (req->status & ZFCP_STATUS_FSFREQ_XDATAINCOMPLETE) + retval = -EAGAIN; } zfcp_fsf_req_free(req); @@ -1369,10 +1393,17 @@ out: } /** - * zfcp_fsf_exchange_port_data_sync - request information about local port - * @qdio: pointer to struct zfcp_qdio - * @data: pointer to struct fsf_qtcb_bottom_port - * Returns: 0 on success, error otherwise + * zfcp_fsf_exchange_port_data_sync() - Request information about local port. + * @qdio: pointer to the QDIO-Queue to use for sending the command. + * @data: pointer to the QTCB-Bottom for storing the result of the command, + * might be %NULL. + * + * Returns: + * * 0 - Exchange Port Data was successful, @data is complete + * * -EIO - Exchange Port Data was not successful, @data is invalid + * * -EAGAIN - @data contains incomplete data + * * -ENOMEM - Some memory allocation failed along the way + * * -EOPNOTSUPP - This operation is not supported */ int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *qdio, struct fsf_qtcb_bottom_port *data) @@ -1408,10 +1439,15 @@ int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *qdio, if (!retval) { /* NOTE: ONLY TOUCH SYNC req AGAIN ON req->completion. */ wait_for_completion(&req->completion); + + if (req->status & + (ZFCP_STATUS_FSFREQ_ERROR | ZFCP_STATUS_FSFREQ_DISMISSED)) + retval = -EIO; + else if (req->status & ZFCP_STATUS_FSFREQ_XDATAINCOMPLETE) + retval = -EAGAIN; } zfcp_fsf_req_free(req); - return retval; out_unlock: |