zfcp: trace on request for open and close of WKA port
[pandora-kernel.git] / drivers / s390 / scsi / zfcp_fsf.c
index e9a787e..28027ab 100644 (file)
@@ -3,7 +3,7 @@
  *
  * Implementation of FSF commands.
  *
- * Copyright IBM Corporation 2002, 2010
+ * Copyright IBM Corp. 2002, 2015
  */
 
 #define KMSG_COMPONENT "zfcp"
@@ -219,7 +219,7 @@ static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req)
                return;
        }
 
-       zfcp_dbf_hba_fsf_uss("fssrh_2", req);
+       zfcp_dbf_hba_fsf_uss("fssrh_4", req);
 
        switch (sr_buf->status_type) {
        case FSF_STATUS_READ_PORT_CLOSED:
@@ -455,11 +455,8 @@ static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req)
 
        fc_host_port_name(shost) = nsp->fl_wwpn;
        fc_host_node_name(shost) = nsp->fl_wwnn;
-       fc_host_port_id(shost) = ntoh24(bottom->s_id);
-       fc_host_speed(shost) = bottom->fc_link_speed;
        fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3;
 
-       adapter->hydra_version = bottom->adapter_type;
        adapter->timer_ticks = bottom->timer_interval & ZFCP_FSF_TIMER_INT_MASK;
        adapter->stat_read_buf_num = max(bottom->status_read_buf_num,
                                         (u16)FSF_STATUS_READS_RECOM);
@@ -467,6 +464,18 @@ static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req)
        if (fc_host_permanent_port_name(shost) == -1)
                fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
 
+       zfcp_scsi_set_prot(adapter);
+
+       /* no error return above here, otherwise must fix call chains */
+       /* do not evaluate invalid fields */
+       if (req->qtcb->header.fsf_status == FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE)
+               return 0;
+
+       fc_host_port_id(shost) = ntoh24(bottom->s_id);
+       fc_host_speed(shost) = bottom->fc_link_speed;
+
+       adapter->hydra_version = bottom->adapter_type;
+
        switch (bottom->fc_topology) {
        case FSF_TOPO_P2P:
                adapter->peer_d_id = ntoh24(bottom->peer_d_id);
@@ -475,7 +484,10 @@ static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req)
                fc_host_port_type(shost) = FC_PORTTYPE_PTP;
                break;
        case FSF_TOPO_FABRIC:
-               fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
+               if (bottom->connection_features & FSF_FEATURE_NPIV_MODE)
+                       fc_host_port_type(shost) = FC_PORTTYPE_NPIV;
+               else
+                       fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
                break;
        case FSF_TOPO_AL:
                fc_host_port_type(shost) = FC_PORTTYPE_NLPORT;
@@ -488,8 +500,6 @@ static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req)
                return -EIO;
        }
 
-       zfcp_scsi_set_prot(adapter);
-
        return 0;
 }
 
@@ -534,8 +544,14 @@ static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req)
                fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;
                adapter->hydra_version = 0;
 
+               /* avoids adapter shutdown to be able to recognize
+                * events such as LINK UP */
+               atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
+                               &adapter->status);
                zfcp_fsf_link_down_info_eval(req,
                        &qtcb->header.fsf_status_qual.link_down_info);
+               if (zfcp_fsf_exchange_config_evaluate(req))
+                       return;
                break;
        default:
                zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh3");
@@ -576,7 +592,6 @@ static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req)
 
        if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) {
                fc_host_permanent_port_name(shost) = bottom->wwpn;
-               fc_host_port_type(shost) = FC_PORTTYPE_NPIV;
        } else
                fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
        fc_host_maxframe_size(shost) = bottom->maximum_frame_size;
@@ -771,12 +786,14 @@ out:
 static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req)
 {
        struct scsi_device *sdev = req->data;
-       struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
+       struct zfcp_scsi_dev *zfcp_sdev;
        union fsf_status_qual *fsq = &req->qtcb->header.fsf_status_qual;
 
        if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
                return;
 
+       zfcp_sdev = sdev_to_zfcp(sdev);
+
        switch (req->qtcb->header.fsf_status) {
        case FSF_PORT_HANDLE_NOT_VALID:
                if (fsq->word[0] == fsq->word[1]) {
@@ -885,7 +902,7 @@ static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req)
 
        switch (header->fsf_status) {
         case FSF_GOOD:
-               zfcp_dbf_san_res("fsscth1", req);
+               zfcp_dbf_san_res("fsscth2", req);
                ct->status = 0;
                break;
         case FSF_SERVICE_CLASS_NOT_SUPPORTED:
@@ -943,8 +960,12 @@ static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req,
        if (zfcp_adapter_multi_buffer_active(adapter)) {
                if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_req))
                        return -EIO;
+               qtcb->bottom.support.req_buf_length =
+                       zfcp_qdio_real_bytes(sg_req);
                if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_resp))
                        return -EIO;
+               qtcb->bottom.support.resp_buf_length =
+                       zfcp_qdio_real_bytes(sg_resp);
 
                zfcp_qdio_set_data_div(qdio, &req->qdio_req,
                                        zfcp_qdio_sbale_count(sg_req));
@@ -1554,7 +1575,7 @@ out:
 int zfcp_fsf_open_wka_port(struct zfcp_fc_wka_port *wka_port)
 {
        struct zfcp_qdio *qdio = wka_port->adapter->qdio;
-       struct zfcp_fsf_req *req;
+       struct zfcp_fsf_req *req = NULL;
        int retval = -EIO;
 
        spin_lock_irq(&qdio->req_q_lock);
@@ -1583,6 +1604,8 @@ int zfcp_fsf_open_wka_port(struct zfcp_fc_wka_port *wka_port)
                zfcp_fsf_req_free(req);
 out:
        spin_unlock_irq(&qdio->req_q_lock);
+       if (req && !IS_ERR(req))
+               zfcp_dbf_rec_run_wka("fsowp_1", wka_port, req->req_id);
        return retval;
 }
 
@@ -1607,7 +1630,7 @@ static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req)
 int zfcp_fsf_close_wka_port(struct zfcp_fc_wka_port *wka_port)
 {
        struct zfcp_qdio *qdio = wka_port->adapter->qdio;
-       struct zfcp_fsf_req *req;
+       struct zfcp_fsf_req *req = NULL;
        int retval = -EIO;
 
        spin_lock_irq(&qdio->req_q_lock);
@@ -1636,6 +1659,8 @@ int zfcp_fsf_close_wka_port(struct zfcp_fc_wka_port *wka_port)
                zfcp_fsf_req_free(req);
 out:
        spin_unlock_irq(&qdio->req_q_lock);
+       if (req && !IS_ERR(req))
+               zfcp_dbf_rec_run_wka("fscwp_1", wka_port, req->req_id);
        return retval;
 }
 
@@ -1739,13 +1764,15 @@ static void zfcp_fsf_open_lun_handler(struct zfcp_fsf_req *req)
 {
        struct zfcp_adapter *adapter = req->adapter;
        struct scsi_device *sdev = req->data;
-       struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
+       struct zfcp_scsi_dev *zfcp_sdev;
        struct fsf_qtcb_header *header = &req->qtcb->header;
        struct fsf_qtcb_bottom_support *bottom = &req->qtcb->bottom.support;
 
        if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
                return;
 
+       zfcp_sdev = sdev_to_zfcp(sdev);
+
        atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
                          ZFCP_STATUS_COMMON_ACCESS_BOXED |
                          ZFCP_STATUS_LUN_SHARED |
@@ -1856,11 +1883,13 @@ out:
 static void zfcp_fsf_close_lun_handler(struct zfcp_fsf_req *req)
 {
        struct scsi_device *sdev = req->data;
-       struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
+       struct zfcp_scsi_dev *zfcp_sdev;
 
        if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
                return;
 
+       zfcp_sdev = sdev_to_zfcp(sdev);
+
        switch (req->qtcb->header.fsf_status) {
        case FSF_PORT_HANDLE_NOT_VALID:
                zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, "fscuh_1");
@@ -1950,7 +1979,7 @@ static void zfcp_fsf_req_trace(struct zfcp_fsf_req *req, struct scsi_cmnd *scsi)
 {
        struct fsf_qual_latency_info *lat_in;
        struct latency_cont *lat = NULL;
-       struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scsi->device);
+       struct zfcp_scsi_dev *zfcp_sdev;
        struct zfcp_blk_drv_data blktrc;
        int ticks = req->adapter->timer_ticks;
 
@@ -1965,6 +1994,7 @@ static void zfcp_fsf_req_trace(struct zfcp_fsf_req *req, struct scsi_cmnd *scsi)
 
        if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA &&
            !(req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
+               zfcp_sdev = sdev_to_zfcp(scsi->device);
                blktrc.flags |= ZFCP_BLK_LAT_VALID;
                blktrc.channel_lat = lat_in->channel_lat * ticks;
                blktrc.fabric_lat = lat_in->fabric_lat * ticks;
@@ -2002,12 +2032,14 @@ static void zfcp_fsf_fcp_handler_common(struct zfcp_fsf_req *req)
 {
        struct scsi_cmnd *scmnd = req->data;
        struct scsi_device *sdev = scmnd->device;
-       struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
+       struct zfcp_scsi_dev *zfcp_sdev;
        struct fsf_qtcb_header *header = &req->qtcb->header;
 
        if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
                return;
 
+       zfcp_sdev = sdev_to_zfcp(sdev);
+
        switch (header->fsf_status) {
        case FSF_HANDLE_MISMATCH:
        case FSF_PORT_HANDLE_NOT_VALID: