[SCSI] bfa: Add diagnostic port (D-Port) support

- Introduced support for D-Port which is a new port mode during which
  link level diagnostics can be run.
- Provided mechanism to dynamically configure D-Port and initiate diagnostic
  tests to isolate any link level issues.
- In D-Port mode, the HBA port does not participate in fabric or login to the
  remote device or run data traffic.
- Diagnostic tests include running various loopback tests in conjunction with
  the attached device.

Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/scsi/bfa/bfad_bsg.h b/drivers/scsi/bfa/bfad_bsg.h
index 8c569ddb750d..62f1b8809d19 100644
--- a/drivers/scsi/bfa/bfad_bsg.h
+++ b/drivers/scsi/bfa/bfad_bsg.h
@@ -141,6 +141,9 @@ enum {
         IOCMD_FCPIM_LUNMASK_QUERY,
         IOCMD_FCPIM_LUNMASK_ADD,
         IOCMD_FCPIM_LUNMASK_DELETE,
+        IOCMD_DIAG_DPORT_ENABLE,
+        IOCMD_DIAG_DPORT_DISABLE,
+        IOCMD_DIAG_DPORT_GET_STATE,
 };
 
 struct bfa_bsg_gen_s {
@@ -613,6 +616,13 @@ struct bfa_bsg_diag_lb_stat_s {
         u16             rsvd;
 };
 
+struct bfa_bsg_diag_dport_get_state_s {
+        bfa_status_t    status;
+        u16             bfad_num;
+        u16             rsvd;
+        enum bfa_dport_state state;
+};
+
 struct bfa_bsg_phy_attr_s {
         bfa_status_t    status;
         u16     bfad_num;