[SCSI] bfa: Support for FC BB credit recovery

[cascardo/linux.git] / drivers / scsi / bfa / bfa_fcs.c

diff --git a/drivers/scsi/bfa/bfa_fcs.c b/drivers/scsi/bfa/bfa_fcs.c
index d428808..a3ab5cc 100644 (file)
--- a/drivers/scsi/bfa/bfa_fcs.c
+++ b/drivers/scsi/bfa/bfa_fcs.c
@@ -240,9 +240,6 @@ static void bfa_fcs_fabric_flogiacc_comp(void *fcsarg,
                                         u32 rsp_len,
                                         u32 resid_len,
                                         struct fchs_s *rspfchs);
-static u8 bfa_fcs_fabric_oper_bbscn(struct bfa_fcs_fabric_s *fabric);
-static bfa_boolean_t bfa_fcs_fabric_is_bbscn_enabled(
-                               struct bfa_fcs_fabric_s *fabric);
 
 static void    bfa_fcs_fabric_sm_uninit(struct bfa_fcs_fabric_s *fabric,
                                         enum bfa_fcs_fabric_event event);
@@ -404,8 +401,7 @@ bfa_fcs_fabric_sm_flogi(struct bfa_fcs_fabric_s *fabric,
        case BFA_FCS_FABRIC_SM_CONT_OP:
 
                bfa_fcport_set_tx_bbcredit(fabric->fcs->bfa,
-                                          fabric->bb_credit,
-                                          bfa_fcs_fabric_oper_bbscn(fabric));
+                                          fabric->bb_credit);
                fabric->fab_type = BFA_FCS_FABRIC_SWITCHED;
 
                if (fabric->auth_reqd && fabric->is_auth) {
@@ -433,8 +429,7 @@ bfa_fcs_fabric_sm_flogi(struct bfa_fcs_fabric_s *fabric,
        case BFA_FCS_FABRIC_SM_NO_FABRIC:
                fabric->fab_type = BFA_FCS_FABRIC_N2N;
                bfa_fcport_set_tx_bbcredit(fabric->fcs->bfa,
-                                          fabric->bb_credit,
-                                          bfa_fcs_fabric_oper_bbscn(fabric));
+                                          fabric->bb_credit);
                bfa_fcs_fabric_notify_online(fabric);
                bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_nofabric);
                break;
@@ -602,8 +597,7 @@ bfa_fcs_fabric_sm_nofabric(struct bfa_fcs_fabric_s *fabric,
        case BFA_FCS_FABRIC_SM_NO_FABRIC:
                bfa_trc(fabric->fcs, fabric->bb_credit);
                bfa_fcport_set_tx_bbcredit(fabric->fcs->bfa,
-                                          fabric->bb_credit,
-                                          bfa_fcs_fabric_oper_bbscn(fabric));
+                                          fabric->bb_credit);
                break;
 
        case BFA_FCS_FABRIC_SM_RETRY_OP:
@@ -965,10 +959,6 @@ bfa_cb_lps_flogi_comp(void *bfad, void *uarg, bfa_status_t status)
 
        case BFA_STATUS_FABRIC_RJT:
                fabric->stats.flogi_rejects++;
-               if (fabric->lps->lsrjt_rsn == FC_LS_RJT_RSN_LOGICAL_ERROR &&
-                   fabric->lps->lsrjt_expl == FC_LS_RJT_EXP_NO_ADDL_INFO)
-                       fabric->fcs->bbscn_flogi_rjt = BFA_TRUE;
-
                bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);
                return;
 
@@ -1014,14 +1004,11 @@ bfa_fcs_fabric_login(struct bfa_fcs_fabric_s *fabric)
 {
        struct bfa_s            *bfa = fabric->fcs->bfa;
        struct bfa_lport_cfg_s  *pcfg = &fabric->bport.port_cfg;
-       u8                      alpa = 0, bb_scn = 0;
+       u8                      alpa = 0;
 
-       if (bfa_fcs_fabric_is_bbscn_enabled(fabric) &&
-           (!fabric->fcs->bbscn_flogi_rjt))
-               bb_scn = BFA_FCS_PORT_DEF_BB_SCN;
 
        bfa_lps_flogi(fabric->lps, fabric, alpa, bfa_fcport_get_maxfrsize(bfa),
-                     pcfg->pwwn, pcfg->nwwn, fabric->auth_reqd, bb_scn);
+                     pcfg->pwwn, pcfg->nwwn, fabric->auth_reqd);
 
        fabric->stats.flogi_sent++;
 }
@@ -1101,40 +1088,6 @@ bfa_fcs_fabric_stop(struct bfa_fcs_fabric_s *fabric)
        bfa_wc_wait(&fabric->stop_wc);
 }
 
-/*
- * Computes operating BB_SCN value
- */
-static u8
-bfa_fcs_fabric_oper_bbscn(struct bfa_fcs_fabric_s *fabric)
-{
-       u8      pr_bbscn = fabric->lps->pr_bbscn;
-       struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(fabric->fcs->bfa);
-
-       if (!(fcport->cfg.bb_scn_state && pr_bbscn))
-               return 0;
-
-       /* return max of local/remote bb_scn values */
-       return ((pr_bbscn > BFA_FCS_PORT_DEF_BB_SCN) ?
-               pr_bbscn : BFA_FCS_PORT_DEF_BB_SCN);
-}
-
-/*
- * Check if BB_SCN can be enabled.
- */
-static bfa_boolean_t
-bfa_fcs_fabric_is_bbscn_enabled(struct bfa_fcs_fabric_s *fabric)
-{
-       struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(fabric->fcs->bfa);
-
-       if (bfa_ioc_get_fcmode(&fabric->fcs->bfa->ioc) &&
-                       fcport->cfg.bb_scn_state &&
-                       !bfa_fcport_is_qos_enabled(fabric->fcs->bfa) &&
-                       !bfa_fcport_is_trunk_enabled(fabric->fcs->bfa))
-               return BFA_TRUE;
-       else
-               return BFA_FALSE;
-}
-
 /*
  * Delete all vports and wait for vport delete completions.
  */
@@ -1273,7 +1226,6 @@ void
 bfa_fcs_fabric_link_down(struct bfa_fcs_fabric_s *fabric)
 {
        bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
-       fabric->fcs->bbscn_flogi_rjt = BFA_FALSE;
        bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_LINK_DOWN);
 }
 
@@ -1480,7 +1432,6 @@ bfa_fcs_fabric_process_flogi(struct bfa_fcs_fabric_s *fabric,
        }
 
        fabric->bb_credit = be16_to_cpu(flogi->csp.bbcred);
-       fabric->lps->pr_bbscn = (be16_to_cpu(flogi->csp.rxsz) >> 12);
        bport->port_topo.pn2n.rem_port_wwn = flogi->port_name;
        bport->port_topo.pn2n.reply_oxid = fchs->ox_id;
 
@@ -1513,8 +1464,7 @@ bfa_fcs_fabric_send_flogi_acc(struct bfa_fcs_fabric_s *fabric)
                                    n2n_port->reply_oxid, pcfg->pwwn,
                                    pcfg->nwwn,
                                    bfa_fcport_get_maxfrsize(bfa),
-                                   bfa_fcport_get_rx_bbcredit(bfa),
-                                   bfa_fcs_fabric_oper_bbscn(fabric));
+                                   bfa_fcport_get_rx_bbcredit(bfa), 0);
 
        bfa_fcxp_send(fcxp, NULL, fabric->vf_id, fabric->lps->bfa_tag,
                      BFA_FALSE, FC_CLASS_3,