[SCSI] zfcp: Add FC pass-through support

Provide the ability to do fibre channel requests from the userspace to
our zfcp driver.  Patch builds upon extension to the fibre channel
tranport class by James Smart and Seokmann Ju.  See here
http://marc.info/?l=linux-scsi&m=123808882309133&w=2

Signed-off-by: Sven Schuetz <sven@linux.vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c
index 7d0da230eb63..967ede73f4c5 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,