[SCSI] bfa: FCS remote port enhancements.

- Introduced rport qualifier structure and modified design to
  export remote ports with valid pid or valid pwwn to the user space.
- Introduced old_pid field in the rport structure and made changes to
  prevent re-creating a new remote port for an already existing rport
  that is transitioning to a delete state. (Happens if we receive a RSCN
  on the existing remote port that is getting deleted).

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

1 files changed, 7 insertions, 3 deletions

diff --git a/drivers/scsi/bfa/bfa_fcs.h b/drivers/scsi/bfa/bfa_fcs.h
index 050a7e900434..ef0ec66f714a 100644
--- a/drivers/scsi/bfa/bfa_fcs.h
+++ b/drivers/scsi/bfa/bfa_fcs.h
@@ -286,9 +286,8 @@ bfa_fcs_lport_get_drvport(struct bfa_fcs_lport_s *port)
 
 bfa_boolean_t   bfa_fcs_lport_is_online(struct bfa_fcs_lport_s *port);
 struct bfa_fcs_lport_s *bfa_fcs_get_base_port(struct bfa_fcs_s *fcs);
-void bfa_fcs_lport_get_rports(struct bfa_fcs_lport_s *port,
-                              wwn_t rport_wwns[], int *nrports);
-
+void bfa_fcs_lport_get_rport_quals(struct bfa_fcs_lport_s *port,
+                        struct bfa_rport_qualifier_s rport[], int *nrports);
 wwn_t bfa_fcs_lport_get_rport(struct bfa_fcs_lport_s *port, wwn_t wwn,
                               int index, int nrports, bfa_boolean_t bwwn);
 
@@ -326,10 +325,14 @@ void            bfa_fcs_lport_offline(struct bfa_fcs_lport_s *port);
 void            bfa_fcs_lport_delete(struct bfa_fcs_lport_s *port);
 struct bfa_fcs_rport_s *bfa_fcs_lport_get_rport_by_pid(
                 struct bfa_fcs_lport_s *port, u32 pid);
+struct bfa_fcs_rport_s *bfa_fcs_lport_get_rport_by_old_pid(
+                struct bfa_fcs_lport_s *port, u32 pid);
 struct bfa_fcs_rport_s *bfa_fcs_lport_get_rport_by_pwwn(
                 struct bfa_fcs_lport_s *port, wwn_t pwwn);
 struct bfa_fcs_rport_s *bfa_fcs_lport_get_rport_by_nwwn(
                 struct bfa_fcs_lport_s *port, wwn_t nwwn);
+struct bfa_fcs_rport_s *bfa_fcs_lport_get_rport_by_qualifier(
+                struct bfa_fcs_lport_s *port, wwn_t pwwn, u32 pid);
 void            bfa_fcs_lport_add_rport(struct bfa_fcs_lport_s *port,
                                        struct bfa_fcs_rport_s *rport);
 void            bfa_fcs_lport_del_rport(struct bfa_fcs_lport_s *port,
@@ -421,6 +424,7 @@ struct bfa_fcs_rport_s {
         struct bfa_fcs_s        *fcs;   /*  fcs instance */
         struct bfad_rport_s     *rp_drv;        /*  driver peer instance */
         u32     pid;    /*  port ID of rport */
+        u32     old_pid;        /* PID before rport goes offline */
         u16     maxfrsize;      /*  maximum frame size */
         __be16  reply_oxid;     /*  OX_ID of inbound requests */
         enum fc_cos     fc_cos; /*  FC classes of service supp */