6 files changed, 219 insertions, 20 deletions

diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c
index 3ac27ee4739..2ccbd185a5f 100644
--- a/drivers/s390/scsi/zfcp_aux.c
+++ b/drivers/s390/scsi/zfcp_aux.c
@@ -470,6 +470,12 @@ int zfcp_adapter_enqueue(struct ccw_device *ccw_device)
         if (!adapter)
                 return -ENOMEM;
 
+        adapter->gs = kzalloc(sizeof(struct zfcp_wka_ports), GFP_KERNEL);
+        if (!adapter->gs) {
+                kfree(adapter);
+                return -ENOMEM;
+        }
+
         ccw_device->handler = NULL;
         adapter->ccw_device = ccw_device;
         atomic_set(&adapter->refcount, 0);
@@ -523,8 +529,7 @@ int zfcp_adapter_enqueue(struct ccw_device *ccw_device)
                 goto sysfs_failed;
 
         atomic_clear_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status);
-
-        zfcp_fc_nameserver_init(adapter);
+        zfcp_fc_wka_ports_init(adapter);
 
         if (!zfcp_adapter_scsi_register(adapter))
                 return 0;
@@ -571,6 +576,7 @@ void zfcp_adapter_dequeue(struct zfcp_adapter *adapter)
         kfree(adapter->req_list);
         kfree(adapter->fc_stats);
         kfree(adapter->stats_reset_data);
+        kfree(adapter->gs);
         kfree(adapter);
 }
 
diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h
index 2074d45dbf6..49d0532bca1 100644
--- a/drivers/s390/scsi/zfcp_def.h
+++ b/drivers/s390/scsi/zfcp_def.h
@@ -22,6 +22,8 @@
 #include <linux/syscalls.h>
 #include <linux/scatterlist.h>
 #include <linux/ioctl.h>
+#include <scsi/fc/fc_fs.h>
+#include <scsi/fc/fc_gs.h>
 #include <scsi/scsi.h>
 #include <scsi/scsi_tcq.h>
 #include <scsi/scsi_cmnd.h>
@@ -29,6 +31,7 @@
 #include <scsi/scsi_host.h>
 #include <scsi/scsi_transport.h>
 #include <scsi/scsi_transport_fc.h>
+#include <scsi/scsi_bsg_fc.h>
 #include <asm/ccwdev.h>
 #include <asm/qdio.h>
 #include <asm/debug.h>
@@ -228,11 +231,6 @@ struct zfcp_ls_adisc {
 
 /* FC-PH/FC-GS well-known address identifiers for generic services */
 #define ZFCP_DID_WKA                            0xFFFFF0
-#define ZFCP_DID_MANAGEMENT_SERVICE             0xFFFFFA
-#define ZFCP_DID_TIME_SERVICE                   0xFFFFFB
-#define ZFCP_DID_DIRECTORY_SERVICE              0xFFFFFC
-#define ZFCP_DID_ALIAS_SERVICE                  0xFFFFF8
-#define ZFCP_DID_KEY_DISTRIBUTION_SERVICE       0xFFFFF7
 
 /* remote port status */
 #define ZFCP_STATUS_PORT_PHYS_OPEN              0x00000001
@@ -376,6 +374,14 @@ struct zfcp_wka_port {
         struct delayed_work     work;
 };
 
+struct zfcp_wka_ports {
+        struct zfcp_wka_port ms;        /* management service */
+        struct zfcp_wka_port ts;        /* time service */
+        struct zfcp_wka_port ds;        /* directory service */
+        struct zfcp_wka_port as;        /* alias service */
+        struct zfcp_wka_port ks;        /* key distribution service */
+};
+
 struct zfcp_qdio_queue {
         struct qdio_buffer *sbal[QDIO_MAX_BUFFERS_PER_Q];
         u8                 first;       /* index of next free bfr in queue */
@@ -461,7 +467,7 @@ struct zfcp_adapter {
                                                       actions */
         u32                     erp_low_mem_count; /* nr of erp actions waiting
                                                       for memory */
-        struct zfcp_wka_port    nsp;               /* adapter's nameserver */
+        struct zfcp_wka_ports   *gs;               /* generic services */
         debug_info_t            *rec_dbf;
         debug_info_t            *hba_dbf;
         debug_info_t            *san_dbf;          /* debug feature areas */
diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c
index e50ea465bc2..8030e25152f 100644
--- a/drivers/s390/scsi/zfcp_erp.c
+++ b/drivers/s390/scsi/zfcp_erp.c
@@ -719,7 +719,7 @@ static void zfcp_erp_adapter_strategy_close(struct zfcp_erp_action *act)
         zfcp_qdio_close(adapter);
         zfcp_fsf_req_dismiss_all(adapter);
         adapter->fsf_req_seq_no = 0;
-        zfcp_fc_wka_port_force_offline(&adapter->nsp);
+        zfcp_fc_wka_port_force_offline(&adapter->gs->ds);
         /* all ports and units are closed */
         zfcp_erp_modify_adapter_status(adapter, "erascl1", NULL,
                                        ZFCP_STATUS_COMMON_OPEN, ZFCP_CLEAR);
diff --git a/drivers/s390/scsi/zfcp_ext.h b/drivers/s390/scsi/zfcp_ext.h
index 120a9a1c81f..3044c601030 100644
--- a/drivers/s390/scsi/zfcp_ext.h
+++ b/drivers/s390/scsi/zfcp_ext.h
@@ -106,8 +106,12 @@ extern int zfcp_fc_ns_gid_pn(struct zfcp_erp_action *);
 extern void zfcp_fc_plogi_evaluate(struct zfcp_port *, struct fsf_plogi *);
 extern void zfcp_test_link(struct zfcp_port *);
 extern void zfcp_fc_link_test_work(struct work_struct *);
-extern void zfcp_fc_nameserver_init(struct zfcp_adapter *);
 extern void zfcp_fc_wka_port_force_offline(struct zfcp_wka_port *);
+extern void zfcp_fc_wka_ports_init(struct zfcp_adapter *);
+extern int zfcp_fc_execute_els_fc_job(struct fc_bsg_job *);
+extern int zfcp_fc_execute_ct_fc_job(struct fc_bsg_job *);
+extern void zfcp_fc_wka_port_force_offline(struct zfcp_wka_port *);
+
 
 /* zfcp_fsf.c */
 extern int zfcp_fsf_open_port(struct zfcp_erp_action *);
diff --git a/drivers/s390/scsi/zfcp_fc.c b/drivers/s390/scsi/zfcp_fc.c
index bb2752b4130..da10e0df687 100644
--- a/drivers/s390/scsi/zfcp_fc.c
+++ b/drivers/s390/scsi/zfcp_fc.c
@@ -120,14 +120,13 @@ static void zfcp_wka_port_put(struct zfcp_wka_port *wka_port)
         schedule_delayed_work(&wka_port->work, HZ / 100);
 }
 
-void zfcp_fc_nameserver_init(struct zfcp_adapter *adapter)
+static void zfcp_fc_wka_port_init(struct zfcp_wka_port *wka_port, u32 d_id,
+                                  struct zfcp_adapter *adapter)
 {
-        struct zfcp_wka_port *wka_port = &adapter->nsp;
-
         init_waitqueue_head(&wka_port->completion_wq);
 
         wka_port->adapter = adapter;
-        wka_port->d_id = ZFCP_DID_DIRECTORY_SERVICE;
+        wka_port->d_id = d_id;
 
         wka_port->status = ZFCP_WKA_PORT_OFFLINE;
         atomic_set(&wka_port->refcount, 0);
@@ -143,6 +142,17 @@ void zfcp_fc_wka_port_force_offline(struct zfcp_wka_port *wka)
         mutex_unlock(&wka->mutex);
 }
 
+void zfcp_fc_wka_ports_init(struct zfcp_adapter *adapter)
+{
+        struct zfcp_wka_ports *gs = adapter->gs;
+
+        zfcp_fc_wka_port_init(&gs->ms, FC_FID_MGMT_SERV, adapter);
+        zfcp_fc_wka_port_init(&gs->ts, FC_FID_TIME_SERV, adapter);
+        zfcp_fc_wka_port_init(&gs->ds, FC_FID_DIR_SERV, adapter);
+        zfcp_fc_wka_port_init(&gs->as, FC_FID_ALIASES, adapter);
+        zfcp_fc_wka_port_init(&gs->ks, FC_FID_SEC_KEY, adapter);
+}
+
 static void _zfcp_fc_incoming_rscn(struct zfcp_fsf_req *fsf_req, u32 range,
                                    struct fcp_rscn_element *elem)
 {
@@ -282,7 +292,7 @@ int static zfcp_fc_ns_gid_pn_request(struct zfcp_erp_action *erp_action,
 
         /* setup parameters for send generic command */
         gid_pn->port = erp_action->port;
-        gid_pn->ct.wka_port = &adapter->nsp;
+        gid_pn->ct.wka_port = &adapter->gs->ds;
         gid_pn->ct.handler = zfcp_fc_ns_handler;
         gid_pn->ct.handler_data = (unsigned long) &compl_rec;
         gid_pn->ct.timeout = ZFCP_NS_GID_PN_TIMEOUT;
@@ -329,13 +339,13 @@ int zfcp_fc_ns_gid_pn(struct zfcp_erp_action *erp_action)
 
         memset(gid_pn, 0, sizeof(*gid_pn));
 
-        ret = zfcp_wka_port_get(&adapter->nsp);
+        ret = zfcp_wka_port_get(&adapter->gs->ds);
         if (ret)
                 goto out;
 
         ret = zfcp_fc_ns_gid_pn_request(erp_action, gid_pn);
 
-        zfcp_wka_port_put(&adapter->nsp);
+        zfcp_wka_port_put(&adapter->gs->ds);
 out:
         mempool_free(gid_pn, adapter->pool.data_gid_pn);
         return ret;
@@ -525,7 +535,7 @@ static int zfcp_scan_issue_gpn_ft(struct zfcp_gpn_ft *gpn_ft,
         req->fc4_type = ZFCP_CT_SCSI_FCP;
 
         /* prepare zfcp_send_ct */
-        ct->wka_port = &adapter->nsp;
+        ct->wka_port = &adapter->gs->ds;
         ct->handler = zfcp_fc_ns_handler;
         ct->handler_data = (unsigned long)&compl_rec;
         ct->timeout = 10;
@@ -644,7 +654,7 @@ int zfcp_scan_ports(struct zfcp_adapter *adapter)
             fc_host_port_type(adapter->scsi_host) != FC_PORTTYPE_NPIV)
                 return 0;
 
-        ret = zfcp_wka_port_get(&adapter->nsp);
+        ret = zfcp_wka_port_get(&adapter->gs->ds);
         if (ret)
                 return ret;
 
@@ -666,7 +676,7 @@ int zfcp_scan_ports(struct zfcp_adapter *adapter)
         }
         zfcp_free_sg_env(gpn_ft, buf_num);
 out:
-        zfcp_wka_port_put(&adapter->nsp);
+        zfcp_wka_port_put(&adapter->gs->ds);
         return ret;
 }
 
@@ -675,3 +685,161 @@ void _zfcp_scan_ports_later(struct work_struct *work)
 {
         zfcp_scan_ports(container_of(work, struct zfcp_adapter, scan_work));
 }
+
+struct zfcp_els_fc_job {
+        struct zfcp_send_els els;
+        struct fc_bsg_job *job;
+};
+
+static void zfcp_fc_generic_els_handler(unsigned long data)
+{
+        struct zfcp_els_fc_job *els_fc_job = (struct zfcp_els_fc_job *) data;
+        struct fc_bsg_job *job = els_fc_job->job;
+        struct fc_bsg_reply *reply = job->reply;
+
+        if (els_fc_job->els.status) {
+                /* request rejected or timed out */
+                reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_REJECT;
+                goto out;
+        }
+
+        reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
+        reply->reply_payload_rcv_len = blk_rq_bytes(job->req->next_rq);
+
+out:
+        job->state_flags = FC_RQST_STATE_DONE;
+        job->job_done(job);
+        kfree(els_fc_job);
+}
+
+int zfcp_fc_execute_els_fc_job(struct fc_bsg_job *job)
+{
+        struct zfcp_els_fc_job *els_fc_job;
+        struct fc_rport *rport = job->rport;
+        struct Scsi_Host *shost;
+        struct zfcp_adapter *adapter;
+        struct zfcp_port *port;
+        u8 *port_did;
+
+        shost = rport ? rport_to_shost(rport) : job->shost;
+        adapter = (struct zfcp_adapter *)shost->hostdata[0];
+
+        if (!(atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_OPEN))
+                return -EINVAL;
+
+        els_fc_job = kzalloc(sizeof(struct zfcp_els_fc_job), GFP_KERNEL);
+        if (!els_fc_job)
+                return -ENOMEM;
+
+        els_fc_job->els.adapter = adapter;
+        if (rport) {
+                read_lock_irq(&zfcp_data.config_lock);
+                port = rport->dd_data;
+                if (port)
+                        zfcp_port_get(port);
+                read_unlock_irq(&zfcp_data.config_lock);
+                if (!port) {
+                        kfree(els_fc_job);
+                        return -EINVAL;
+                }
+                els_fc_job->els.port = port;
+                els_fc_job->els.d_id = port->d_id;
+                zfcp_port_put(port);
+        } else {
+                port_did = job->request->rqst_data.h_els.port_id;
+                els_fc_job->els.d_id = (port_did[0] << 16) +
+                                        (port_did[1] << 8) + port_did[2];
+        }
+
+        els_fc_job->els.req = job->request_payload.sg_list;
+        els_fc_job->els.resp = job->reply_payload.sg_list;
+        els_fc_job->els.handler = zfcp_fc_generic_els_handler;
+        els_fc_job->els.handler_data = (unsigned long) els_fc_job;
+        els_fc_job->job = job;
+
+        return zfcp_fsf_send_els(&els_fc_job->els);
+}
+
+struct zfcp_ct_fc_job {
+        struct zfcp_send_ct ct;
+        struct fc_bsg_job *job;
+};
+
+static void zfcp_fc_generic_ct_handler(unsigned long data)
+{
+        struct zfcp_ct_fc_job *ct_fc_job = (struct zfcp_ct_fc_job *) data;
+        struct fc_bsg_job *job = ct_fc_job->job;
+
+        job->reply->reply_data.ctels_reply.status = ct_fc_job->ct.status ?
+                                FC_CTELS_STATUS_REJECT : FC_CTELS_STATUS_OK;
+        job->state_flags = FC_RQST_STATE_DONE;
+        job->reply->reply_payload_rcv_len = blk_rq_bytes(job->req->next_rq);
+        job->job_done(job);
+
+        zfcp_wka_port_put(ct_fc_job->ct.wka_port);
+
+        kfree(ct_fc_job);
+}
+
+int zfcp_fc_execute_ct_fc_job(struct fc_bsg_job *job)
+{
+        int ret;
+        u8 gs_type;
+        struct fc_rport *rport = job->rport;
+        struct Scsi_Host *shost;
+        struct zfcp_adapter *adapter;
+        struct zfcp_ct_fc_job *ct_fc_job;
+        u32 preamble_word1;
+
+        shost = rport ? rport_to_shost(rport) : job->shost;
+
+        adapter = (struct zfcp_adapter *)shost->hostdata[0];
+        if (!(atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_OPEN))
+                return -EINVAL;
+
+        ct_fc_job = kzalloc(sizeof(struct zfcp_ct_fc_job), GFP_KERNEL);
+        if (!ct_fc_job)
+                return -ENOMEM;
+
+        preamble_word1 = job->request->rqst_data.r_ct.preamble_word1;
+        gs_type = (preamble_word1 & 0xff000000) >> 24;
+
+        switch (gs_type) {
+        case FC_FST_ALIAS:
+                ct_fc_job->ct.wka_port = &adapter->gs->as;
+                break;
+        case FC_FST_MGMT:
+                ct_fc_job->ct.wka_port = &adapter->gs->ms;
+                break;
+        case FC_FST_TIME:
+                ct_fc_job->ct.wka_port = &adapter->gs->ts;
+                break;
+        case FC_FST_DIR:
+                ct_fc_job->ct.wka_port = &adapter->gs->ds;
+                break;
+        default:
+                kfree(ct_fc_job);
+                return -EINVAL; /* no such service */
+        }
+
+        ret = zfcp_wka_port_get(ct_fc_job->ct.wka_port);
+        if (ret) {
+                kfree(ct_fc_job);
+                return ret;
+        }
+
+        ct_fc_job->ct.req = job->request_payload.sg_list;
+        ct_fc_job->ct.resp = job->reply_payload.sg_list;
+        ct_fc_job->ct.timeout = ZFCP_FSF_REQUEST_TIMEOUT;
+        ct_fc_job->ct.handler = zfcp_fc_generic_ct_handler;
+        ct_fc_job->ct.handler_data = (unsigned long) ct_fc_job;
+        ct_fc_job->ct.completion = NULL;
+        ct_fc_job->job = job;
+
+        ret = zfcp_fsf_send_ct(&ct_fc_job->ct, NULL, NULL);
+        if (ret) {
+                kfree(ct_fc_job);
+                zfcp_wka_port_put(ct_fc_job->ct.wka_port);
+        }
+        return ret;
+}
diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c
index 7d0da230eb6..967ede73f4c 100644
--- a/drivers/s390/scsi/zfcp_scsi.c
+++ b/drivers/s390/scsi/zfcp_scsi.c
@@ -623,6 +623,20 @@ void zfcp_scsi_scan(struct work_struct *work)
         zfcp_unit_put(unit);
 }
 
+static int zfcp_execute_fc_job(struct fc_bsg_job *job)
+{
+        switch (job->request->msgcode) {
+        case FC_BSG_RPT_ELS:
+        case FC_BSG_HST_ELS_NOLOGIN:
+                return zfcp_fc_execute_els_fc_job(job);
+        case FC_BSG_RPT_CT:
+        case FC_BSG_HST_CT:
+                return zfcp_fc_execute_ct_fc_job(job);
+        default:
+                return -EINVAL;
+        }
+}
+
 struct fc_function_template zfcp_transport_functions = {
         .show_starget_port_id = 1,
         .show_starget_port_name = 1,
@@ -644,6 +658,7 @@ struct fc_function_template zfcp_transport_functions = {
         .dev_loss_tmo_callbk = zfcp_scsi_dev_loss_tmo_callbk,
         .terminate_rport_io = zfcp_scsi_terminate_rport_io,
         .show_host_port_state = 1,
+        .bsg_request = zfcp_execute_fc_job,
         /* no functions registered for following dynamic attributes but
            directly set by LLDD */
         .show_host_port_type = 1,