1 files changed, 129 insertions, 424 deletions

diff --git a/drivers/scsi/bfa/bfa_fcpim.c b/drivers/scsi/bfa/bfa_fcpim.c
index e07bd4745d8..d7385d1d9c5 100644
--- a/drivers/scsi/bfa/bfa_fcpim.c
+++ b/drivers/scsi/bfa/bfa_fcpim.c
@@ -24,8 +24,6 @@ BFA_TRC_FILE(HAL, FCPIM);
  *  BFA ITNIM Related definitions
  */
 static void bfa_itnim_update_del_itn_stats(struct bfa_itnim_s *itnim);
-static bfa_boolean_t bfa_ioim_lm_proc_rpl_data(struct bfa_ioim_s *ioim);
-static bfa_boolean_t bfa_ioim_lm_proc_inq_data(struct bfa_ioim_s *ioim);
 static void bfa_ioim_lm_init(struct bfa_s *bfa);
 
 #define BFA_ITNIM_FROM_TAG(_fcpim, _tag)                                \
@@ -60,14 +58,6 @@ static void bfa_ioim_lm_init(struct bfa_s *bfa);
 	}								\
 } while (0)
 
-#define bfa_ioim_rp_wwn(__ioim)						\
-	(((struct bfa_fcs_rport_s *)					\
-	 (__ioim)->itnim->rport->rport_drv)->pwwn)
-
-#define bfa_ioim_lp_wwn(__ioim)						\
-	((BFA_LPS_FROM_TAG(BFA_LPS_MOD((__ioim)->bfa),			\
-	(__ioim)->itnim->rport->rport_info.lp_tag))->pwwn)		\
-
 #define bfa_itnim_sler_cb(__itnim) do {					\
 	if ((__itnim)->bfa->fcs)					\
 		bfa_cb_itnim_sler((__itnim)->ditn);      \
@@ -77,13 +67,6 @@ static void bfa_ioim_lm_init(struct bfa_s *bfa);
 	}								\
 } while (0)
 
-enum bfa_ioim_lm_status {
-	BFA_IOIM_LM_PRESENT = 1,
-	BFA_IOIM_LM_LUN_NOT_SUP = 2,
-	BFA_IOIM_LM_RPL_DATA_CHANGED = 3,
-	BFA_IOIM_LM_LUN_NOT_RDY = 4,
-};
-
 enum bfa_ioim_lm_ua_status {
 	BFA_IOIM_LM_UA_RESET = 0,
 	BFA_IOIM_LM_UA_SET = 1,
@@ -145,9 +128,6 @@ enum bfa_ioim_event {
 	BFA_IOIM_SM_TMDONE	= 16,	/*  IO cleanup from tskim */
 	BFA_IOIM_SM_HWFAIL	= 17,	/*  IOC h/w failure event */
 	BFA_IOIM_SM_IOTOV	= 18,	/*  ITN offline TOV */
-	BFA_IOIM_SM_LM_LUN_NOT_SUP = 19,/*  lunmask lun not supported */
-	BFA_IOIM_SM_LM_RPL_DC = 20,	/*  lunmask report-lun data changed */
-	BFA_IOIM_SM_LM_LUN_NOT_RDY = 21,/*  lunmask lun not ready */
 };
 
 
@@ -178,6 +158,7 @@ enum bfa_tskim_event {
 	BFA_TSKIM_SM_IOS_DONE	= 7,	/*  IO and sub TM completions	*/
 	BFA_TSKIM_SM_CLEANUP	= 8,	/*  TM cleanup on ITN offline	*/
 	BFA_TSKIM_SM_CLEANUP_DONE = 9,	/*  TM abort completion	*/
+	BFA_TSKIM_SM_UTAG	= 10,	/*  TM completion unknown tag  */
 };
 
 /*
@@ -245,9 +226,6 @@ static void __bfa_cb_ioim_abort(void *cbarg, bfa_boolean_t complete);
 static void __bfa_cb_ioim_failed(void *cbarg, bfa_boolean_t complete);
 static void __bfa_cb_ioim_pathtov(void *cbarg, bfa_boolean_t complete);
 static bfa_boolean_t    bfa_ioim_is_abortable(struct bfa_ioim_s *ioim);
-static void __bfa_cb_ioim_lm_lun_not_sup(void *cbarg, bfa_boolean_t complete);
-static void __bfa_cb_ioim_lm_rpl_dc(void *cbarg, bfa_boolean_t complete);
-static void __bfa_cb_ioim_lm_lun_not_rdy(void *cbarg, bfa_boolean_t complete);
 
 /*
  * forward declaration of BFA IO state machine
@@ -445,12 +423,6 @@ bfa_fcpim_add_stats(struct bfa_itnim_iostats_s *lstats,
 	bfa_fcpim_add_iostats(lstats, rstats, output_reqs);
 	bfa_fcpim_add_iostats(lstats, rstats, rd_throughput);
 	bfa_fcpim_add_iostats(lstats, rstats, wr_throughput);
-	bfa_fcpim_add_iostats(lstats, rstats, lm_lun_across_sg);
-	bfa_fcpim_add_iostats(lstats, rstats, lm_lun_not_sup);
-	bfa_fcpim_add_iostats(lstats, rstats, lm_rpl_data_changed);
-	bfa_fcpim_add_iostats(lstats, rstats, lm_wire_residue_changed);
-	bfa_fcpim_add_iostats(lstats, rstats, lm_small_buf_addresidue);
-	bfa_fcpim_add_iostats(lstats, rstats, lm_lun_not_rdy);
 }
 
 bfa_status_t
@@ -1495,7 +1467,13 @@ bfa_status_t
 bfa_itnim_get_ioprofile(struct bfa_itnim_s *itnim,
 			struct bfa_itnim_ioprofile_s *ioprofile)
 {
-	struct bfa_fcpim_s *fcpim = BFA_FCPIM(itnim->bfa);
+	struct bfa_fcpim_s *fcpim;
+
+	if (!itnim)
+		return BFA_STATUS_NO_FCPIM_NEXUS;
+
+	fcpim = BFA_FCPIM(itnim->bfa);
+
 	if (!fcpim->io_profile)
 		return BFA_STATUS_IOPROFILE_OFF;
 
@@ -1513,6 +1491,10 @@ void
 bfa_itnim_clear_stats(struct bfa_itnim_s *itnim)
 {
 	int j;
+
+	if (!itnim)
+		return;
+
 	memset(&itnim->stats, 0, sizeof(itnim->stats));
 	memset(&itnim->ioprofile, 0, sizeof(itnim->ioprofile));
 	for (j = 0; j < BFA_IOBUCKET_MAX; j++)
@@ -1580,27 +1562,6 @@ bfa_ioim_sm_uninit(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
 			__bfa_cb_ioim_abort, ioim);
 		break;
 
-	case BFA_IOIM_SM_LM_LUN_NOT_SUP:
-		bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
-		bfa_ioim_move_to_comp_q(ioim);
-		bfa_cb_queue(ioim->bfa, &ioim->hcb_qe,
-			__bfa_cb_ioim_lm_lun_not_sup, ioim);
-		break;
-
-	case BFA_IOIM_SM_LM_RPL_DC:
-		bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
-		bfa_ioim_move_to_comp_q(ioim);
-		bfa_cb_queue(ioim->bfa, &ioim->hcb_qe,
-				__bfa_cb_ioim_lm_rpl_dc, ioim);
-		break;
-
-	case BFA_IOIM_SM_LM_LUN_NOT_RDY:
-		bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
-		bfa_ioim_move_to_comp_q(ioim);
-		bfa_cb_queue(ioim->bfa, &ioim->hcb_qe,
-			__bfa_cb_ioim_lm_lun_not_rdy, ioim);
-		break;
-
 	default:
 		bfa_sm_fault(ioim->bfa, event);
 	}
@@ -2160,243 +2121,6 @@ bfa_ioim_lm_init(struct bfa_s *bfa)
 	}
 }
 
-/*
- * Validate LUN for LUN masking
- */
-static enum bfa_ioim_lm_status
-bfa_ioim_lm_check(struct bfa_ioim_s *ioim, struct bfa_lps_s *lps,
-		struct bfa_rport_s *rp, struct scsi_lun lun)
-{
-	u8 i;
-	struct bfa_lun_mask_s *lun_list = bfa_get_lun_mask_list(ioim->bfa);
-	struct scsi_cmnd *cmnd = (struct scsi_cmnd *)ioim->dio;
-	struct scsi_cdb_s *cdb = (struct scsi_cdb_s *)cmnd->cmnd;
-
-	if ((cdb->scsi_cdb[0] == REPORT_LUNS) &&
-	    (scsilun_to_int((struct scsi_lun *)&lun) == 0)) {
-		ioim->proc_rsp_data = bfa_ioim_lm_proc_rpl_data;
-		return BFA_IOIM_LM_PRESENT;
-	}
-
-	for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
-
-		if (lun_list[i].state != BFA_IOIM_LUN_MASK_ACTIVE)
-			continue;
-
-		if ((scsilun_to_int((struct scsi_lun *)&lun_list[i].lun) ==
-		    scsilun_to_int((struct scsi_lun *)&lun))
-		    && (rp->rport_tag == lun_list[i].rp_tag)
-		    && ((u8)ioim->itnim->rport->rport_info.lp_tag ==
-						lun_list[i].lp_tag)) {
-			bfa_trc(ioim->bfa, lun_list[i].rp_tag);
-			bfa_trc(ioim->bfa, lun_list[i].lp_tag);
-			bfa_trc(ioim->bfa, scsilun_to_int(
-				(struct scsi_lun *)&lun_list[i].lun));
-
-			if ((lun_list[i].ua == BFA_IOIM_LM_UA_SET) &&
-			    ((cdb->scsi_cdb[0] != INQUIRY) ||
-			    (cdb->scsi_cdb[0] != REPORT_LUNS))) {
-				lun_list[i].ua = BFA_IOIM_LM_UA_RESET;
-				return BFA_IOIM_LM_RPL_DATA_CHANGED;
-			}
-
-			if (cdb->scsi_cdb[0] == REPORT_LUNS)
-				ioim->proc_rsp_data = bfa_ioim_lm_proc_rpl_data;
-
-			return BFA_IOIM_LM_PRESENT;
-		}
-	}
-
-	if ((cdb->scsi_cdb[0] == INQUIRY) &&
-	    (scsilun_to_int((struct scsi_lun *)&lun) == 0)) {
-		ioim->proc_rsp_data = bfa_ioim_lm_proc_inq_data;
-		return BFA_IOIM_LM_PRESENT;
-	}
-
-	if (cdb->scsi_cdb[0] == TEST_UNIT_READY)
-		return BFA_IOIM_LM_LUN_NOT_RDY;
-
-	return BFA_IOIM_LM_LUN_NOT_SUP;
-}
-
-static bfa_boolean_t
-bfa_ioim_lm_proc_rsp_data_dummy(struct bfa_ioim_s *ioim)
-{
-	return BFA_TRUE;
-}
-
-static void
-bfa_ioim_lm_fetch_lun(struct bfa_ioim_s *ioim, u8 *rl_data, int offset,
-		int buf_lun_cnt)
-{
-	struct bfa_lun_mask_s *lun_list = bfa_get_lun_mask_list(ioim->bfa);
-	struct scsi_lun *lun_data = (struct scsi_lun *)(rl_data + offset);
-	struct scsi_lun lun;
-	int i, j;
-
-	bfa_trc(ioim->bfa, buf_lun_cnt);
-	for (j = 0; j < buf_lun_cnt; j++) {
-		lun = *((struct scsi_lun *)(lun_data + j));
-		for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
-			if (lun_list[i].state != BFA_IOIM_LUN_MASK_ACTIVE)
-				continue;
-			if ((lun_list[i].rp_wwn == bfa_ioim_rp_wwn(ioim)) &&
-			    (lun_list[i].lp_wwn == bfa_ioim_lp_wwn(ioim)) &&
-			    (scsilun_to_int((struct scsi_lun *)&lun_list[i].lun)
-				== scsilun_to_int((struct scsi_lun *)&lun))) {
-				lun_list[i].state = BFA_IOIM_LUN_MASK_FETCHED;
-				break;
-			}
-		} /* next lun in mask DB */
-	} /* next lun in buf */
-}
-
-static int
-bfa_ioim_lm_update_lun_sg(struct bfa_ioim_s *ioim, u32 *pgdlen,
-		struct scsi_report_luns_data_s *rl)
-{
-	struct scsi_cmnd *cmnd = (struct scsi_cmnd *)ioim->dio;
-	struct scatterlist *sg = scsi_sglist(cmnd);
-	struct bfa_lun_mask_s *lun_list = bfa_get_lun_mask_list(ioim->bfa);
-	struct scsi_lun *prev_rl_data = NULL, *base_rl_data;
-	int i, j, sgeid, lun_fetched_cnt = 0, prev_sg_len = 0, base_count;
-	int lun_across_sg_bytes, bytes_from_next_buf;
-	u64	last_lun, temp_last_lun;
-
-	/* fetch luns from the first sg element */
-	bfa_ioim_lm_fetch_lun(ioim, (u8 *)(rl->lun), 0,
-			(sg_dma_len(sg) / sizeof(struct scsi_lun)) - 1);
-
-	/* fetch luns from multiple sg elements */
-	scsi_for_each_sg(cmnd, sg, scsi_sg_count(cmnd), sgeid) {
-		if (sgeid == 0) {
-			prev_sg_len = sg_dma_len(sg);
-			prev_rl_data = (struct scsi_lun *)
-					phys_to_virt(sg_dma_address(sg));
-			continue;
-		}
-
-		/* if the buf is having more data */
-		lun_across_sg_bytes = prev_sg_len % sizeof(struct scsi_lun);
-		if (lun_across_sg_bytes) {
-			bfa_trc(ioim->bfa, lun_across_sg_bytes);
-			bfa_stats(ioim->itnim, lm_lun_across_sg);
-			bytes_from_next_buf = sizeof(struct scsi_lun) -
-					      lun_across_sg_bytes;
-
-			/* from next buf take higher bytes */
-			temp_last_lun = *((u64 *)
-					  phys_to_virt(sg_dma_address(sg)));
-			last_lun |= temp_last_lun >>
-				    (lun_across_sg_bytes * BITS_PER_BYTE);
-
-			/* from prev buf take higher bytes */
-			temp_last_lun = *((u64 *)(prev_rl_data +
-					  (prev_sg_len - lun_across_sg_bytes)));
-			temp_last_lun >>= bytes_from_next_buf * BITS_PER_BYTE;
-			last_lun = last_lun | (temp_last_lun <<
-				   (bytes_from_next_buf * BITS_PER_BYTE));
-
-			bfa_ioim_lm_fetch_lun(ioim, (u8 *)&last_lun, 0, 1);
-		} else
-			bytes_from_next_buf = 0;
-
-		*pgdlen += sg_dma_len(sg);
-		prev_sg_len = sg_dma_len(sg);
-		prev_rl_data = (struct scsi_lun *)
-				phys_to_virt(sg_dma_address(sg));
-		bfa_ioim_lm_fetch_lun(ioim, (u8 *)prev_rl_data,
-				bytes_from_next_buf,
-				sg_dma_len(sg) / sizeof(struct scsi_lun));
-	}
-
-	/* update the report luns data - based on fetched luns */
-	sg = scsi_sglist(cmnd);
-	base_rl_data = (struct scsi_lun *)rl->lun;
-	base_count = (sg_dma_len(sg) / sizeof(struct scsi_lun)) - 1;
-	for (i = 0, j = 0; i < MAX_LUN_MASK_CFG; i++) {
-		if (lun_list[i].state == BFA_IOIM_LUN_MASK_FETCHED) {
-			base_rl_data[j] = lun_list[i].lun;
-			lun_list[i].state = BFA_IOIM_LUN_MASK_ACTIVE;
-			j++;
-			lun_fetched_cnt++;
-		}
-
-		if (j > base_count) {
-			j = 0;
-			sg = sg_next(sg);
-			base_rl_data = (struct scsi_lun *)
-					phys_to_virt(sg_dma_address(sg));
-			base_count = sg_dma_len(sg) / sizeof(struct scsi_lun);
-		}
-	}
-
-	bfa_trc(ioim->bfa, lun_fetched_cnt);
-	return lun_fetched_cnt;
-}
-
-static bfa_boolean_t
-bfa_ioim_lm_proc_inq_data(struct bfa_ioim_s *ioim)
-{
-	struct scsi_inquiry_data_s *inq;
-	struct scatterlist *sg = scsi_sglist((struct scsi_cmnd *)ioim->dio);
-
-	ioim->proc_rsp_data = bfa_ioim_lm_proc_rsp_data_dummy;
-	inq = (struct scsi_inquiry_data_s *)phys_to_virt(sg_dma_address(sg));
-
-	bfa_trc(ioim->bfa, inq->device_type);
-	inq->peripheral_qual = SCSI_INQ_PQ_NOT_CON;
-	return 0;
-}
-
-static bfa_boolean_t
-bfa_ioim_lm_proc_rpl_data(struct bfa_ioim_s *ioim)
-{
-	struct scsi_cmnd *cmnd = (struct scsi_cmnd *)ioim->dio;
-	struct scatterlist *sg = scsi_sglist(cmnd);
-	struct bfi_ioim_rsp_s *m;
-	struct scsi_report_luns_data_s *rl = NULL;
-	int lun_count = 0, lun_fetched_cnt = 0;
-	u32 residue, pgdlen = 0;
-
-	ioim->proc_rsp_data = bfa_ioim_lm_proc_rsp_data_dummy;
-	if (bfa_get_lun_mask_status(ioim->bfa) != BFA_LUNMASK_ENABLED)
-		return BFA_TRUE;
-
-	m = (struct bfi_ioim_rsp_s *) &ioim->iosp->comp_rspmsg;
-	if (m->scsi_status == SCSI_STATUS_CHECK_CONDITION)
-		return BFA_TRUE;
-
-	pgdlen = sg_dma_len(sg);
-	bfa_trc(ioim->bfa, pgdlen);
-	rl = (struct scsi_report_luns_data_s *)phys_to_virt(sg_dma_address(sg));
-	lun_count = cpu_to_be32(rl->lun_list_length) / sizeof(struct scsi_lun);
-	lun_fetched_cnt = bfa_ioim_lm_update_lun_sg(ioim, &pgdlen, rl);
-
-	if (lun_count == lun_fetched_cnt)
-		return BFA_TRUE;
-
-	bfa_trc(ioim->bfa, lun_count);
-	bfa_trc(ioim->bfa, lun_fetched_cnt);
-	bfa_trc(ioim->bfa, be32_to_cpu(rl->lun_list_length));
-
-	if (be32_to_cpu(rl->lun_list_length) <= pgdlen)
-		rl->lun_list_length = be32_to_cpu(lun_fetched_cnt) *
-				      sizeof(struct scsi_lun);
-	else
-		bfa_stats(ioim->itnim, lm_small_buf_addresidue);
-
-	bfa_trc(ioim->bfa, be32_to_cpu(rl->lun_list_length));
-	bfa_trc(ioim->bfa, be32_to_cpu(m->residue));
-
-	residue = be32_to_cpu(m->residue);
-	residue += (lun_count - lun_fetched_cnt) * sizeof(struct scsi_lun);
-	bfa_stats(ioim->itnim, lm_wire_residue_changed);
-	m->residue = be32_to_cpu(residue);
-	bfa_trc(ioim->bfa, ioim->nsges);
-	return BFA_FALSE;
-}
-
 static void
 __bfa_cb_ioim_good_comp(void *cbarg, bfa_boolean_t complete)
 {
@@ -2454,83 +2178,6 @@ __bfa_cb_ioim_comp(void *cbarg, bfa_boolean_t complete)
 			  m->scsi_status, sns_len, snsinfo, residue);
 }
 
-static void
-__bfa_cb_ioim_lm_lun_not_sup(void *cbarg, bfa_boolean_t complete)
-{
-	struct bfa_ioim_s *ioim = cbarg;
-	int sns_len = 0xD;
-	u32 residue = scsi_bufflen((struct scsi_cmnd *)ioim->dio);
-	struct scsi_sense_s *snsinfo;
-
-	if (!complete) {
-		bfa_sm_send_event(ioim, BFA_IOIM_SM_HCB);
-		return;
-	}
-
-	snsinfo = (struct scsi_sense_s *)BFA_SNSINFO_FROM_TAG(
-					ioim->fcpim->fcp, ioim->iotag);
-	snsinfo->rsp_code = SCSI_SENSE_CUR_ERR;
-	snsinfo->add_sense_length = 0xa;
-	snsinfo->asc = SCSI_ASC_LUN_NOT_SUPPORTED;
-	snsinfo->sense_key = ILLEGAL_REQUEST;
-	bfa_trc(ioim->bfa, residue);
-	bfa_cb_ioim_done(ioim->bfa->bfad, ioim->dio, BFI_IOIM_STS_OK,
-			SCSI_STATUS_CHECK_CONDITION, sns_len,
-			(u8 *)snsinfo, residue);
-}
-
-static void
-__bfa_cb_ioim_lm_rpl_dc(void *cbarg, bfa_boolean_t complete)
-{
-	struct bfa_ioim_s *ioim = cbarg;
-	int sns_len = 0xD;
-	u32 residue = scsi_bufflen((struct scsi_cmnd *)ioim->dio);
-	struct scsi_sense_s *snsinfo;
-
-	if (!complete) {
-		bfa_sm_send_event(ioim, BFA_IOIM_SM_HCB);
-		return;
-	}
-
-	snsinfo = (struct scsi_sense_s *)BFA_SNSINFO_FROM_TAG(ioim->fcpim->fcp,
-						       ioim->iotag);
-	snsinfo->rsp_code = SCSI_SENSE_CUR_ERR;
-	snsinfo->sense_key = SCSI_MP_IEC_UNIT_ATTN;
-	snsinfo->asc = SCSI_ASC_TOCC;
-	snsinfo->add_sense_length = 0x6;
-	snsinfo->ascq = SCSI_ASCQ_RL_DATA_CHANGED;
-	bfa_trc(ioim->bfa, residue);
-	bfa_cb_ioim_done(ioim->bfa->bfad, ioim->dio, BFI_IOIM_STS_OK,
-			SCSI_STATUS_CHECK_CONDITION, sns_len,
-			(u8 *)snsinfo, residue);
-}
-
-static void
-__bfa_cb_ioim_lm_lun_not_rdy(void *cbarg, bfa_boolean_t complete)
-{
-	struct bfa_ioim_s *ioim = cbarg;
-	int sns_len = 0xD;
-	u32 residue = scsi_bufflen((struct scsi_cmnd *)ioim->dio);
-	struct scsi_sense_s *snsinfo;
-
-	if (!complete) {
-		bfa_sm_send_event(ioim, BFA_IOIM_SM_HCB);
-		return;
-	}
-
-	snsinfo = (struct scsi_sense_s *)BFA_SNSINFO_FROM_TAG(
-					ioim->fcpim->fcp, ioim->iotag);
-	snsinfo->rsp_code = SCSI_SENSE_CUR_ERR;
-	snsinfo->add_sense_length = 0xa;
-	snsinfo->sense_key = NOT_READY;
-	snsinfo->asc = SCSI_ASC_LUN_NOT_READY;
-	snsinfo->ascq = SCSI_ASCQ_MAN_INTR_REQ;
-	bfa_trc(ioim->bfa, residue);
-	bfa_cb_ioim_done(ioim->bfa->bfad, ioim->dio, BFI_IOIM_STS_OK,
-			SCSI_STATUS_CHECK_CONDITION, sns_len,
-			(u8 *)snsinfo, residue);
-}
-
 void
 bfa_fcpim_lunmask_rp_update(struct bfa_s *bfa, wwn_t lp_wwn, wwn_t rp_wwn,
 			u16 rp_tag, u8 lp_tag)
@@ -2647,7 +2294,8 @@ bfa_fcpim_lunmask_add(struct bfa_s *bfa, u16 vf_id, wwn_t *pwwn,
 	if (port) {
 		*pwwn = port->port_cfg.pwwn;
 		rp_fcs = bfa_fcs_lport_get_rport_by_pwwn(port, rpwwn);
-		rp = rp_fcs->bfa_rport;
+		if (rp_fcs)
+			rp = rp_fcs->bfa_rport;
 	}
 
 	lunm_list = bfa_get_lun_mask_list(bfa);
@@ -2715,7 +2363,8 @@ bfa_fcpim_lunmask_delete(struct bfa_s *bfa, u16 vf_id, wwn_t *pwwn,
 		if (port) {
 			*pwwn = port->port_cfg.pwwn;
 			rp_fcs = bfa_fcs_lport_get_rport_by_pwwn(port, rpwwn);
-			rp = rp_fcs->bfa_rport;
+			if (rp_fcs)
+				rp = rp_fcs->bfa_rport;
 		}
 	}
 
@@ -2757,7 +2406,6 @@ __bfa_cb_ioim_failed(void *cbarg, bfa_boolean_t complete)
 		return;
 	}
 
-	ioim->proc_rsp_data = bfa_ioim_lm_proc_rsp_data_dummy;
 	bfa_cb_ioim_done(ioim->bfa->bfad, ioim->dio, BFI_IOIM_STS_ABORTED,
 			  0, 0, NULL, 0);
 }
@@ -2773,7 +2421,6 @@ __bfa_cb_ioim_pathtov(void *cbarg, bfa_boolean_t complete)
 		return;
 	}
 
-	ioim->proc_rsp_data = bfa_ioim_lm_proc_rsp_data_dummy;
 	bfa_cb_ioim_done(ioim->bfa->bfad, ioim->dio, BFI_IOIM_STS_PATHTOV,
 			  0, 0, NULL, 0);
 }
@@ -2788,7 +2435,6 @@ __bfa_cb_ioim_abort(void *cbarg, bfa_boolean_t complete)
 		return;
 	}
 
-	ioim->proc_rsp_data = bfa_ioim_lm_proc_rsp_data_dummy;
 	bfa_cb_ioim_abort(ioim->bfa->bfad, ioim->dio);
 }
 
@@ -3132,7 +2778,6 @@ bfa_ioim_attach(struct bfa_fcpim_s *fcpim)
 		ioim->bfa     = fcpim->bfa;
 		ioim->fcpim   = fcpim;
 		ioim->iosp    = iosp;
-		ioim->proc_rsp_data = bfa_ioim_lm_proc_rsp_data_dummy;
 		INIT_LIST_HEAD(&ioim->sgpg_q);
 		bfa_reqq_winit(&ioim->iosp->reqq_wait,
 				   bfa_ioim_qresume, ioim);
@@ -3170,7 +2815,6 @@ bfa_ioim_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
 			evt = BFA_IOIM_SM_DONE;
 		else
 			evt = BFA_IOIM_SM_COMP;
-		ioim->proc_rsp_data(ioim);
 		break;
 
 	case BFI_IOIM_STS_TIMEDOUT:
@@ -3206,7 +2850,6 @@ bfa_ioim_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
 		if (rsp->abort_tag != ioim->abort_tag) {
 			bfa_trc(ioim->bfa, rsp->abort_tag);
 			bfa_trc(ioim->bfa, ioim->abort_tag);
-			ioim->proc_rsp_data = bfa_ioim_lm_proc_rsp_data_dummy;
 			return;
 		}
 
@@ -3225,7 +2868,6 @@ bfa_ioim_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
 		WARN_ON(1);
 	}
 
-	ioim->proc_rsp_data = bfa_ioim_lm_proc_rsp_data_dummy;
 	bfa_sm_send_event(ioim, evt);
 }
 
@@ -3240,19 +2882,11 @@ bfa_ioim_good_comp_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
 	iotag = be16_to_cpu(rsp->io_tag);
 
 	ioim = BFA_IOIM_FROM_TAG(fcpim, iotag);
-	WARN_ON(BFA_IOIM_TAG_2_ID(ioim->iotag) != iotag);
+	WARN_ON(ioim->iotag != iotag);
 
 	bfa_ioim_cb_profile_comp(fcpim, ioim);
 
-	if (bfa_get_lun_mask_status(bfa) != BFA_LUNMASK_ENABLED)  {
-		bfa_sm_send_event(ioim, BFA_IOIM_SM_COMP_GOOD);
-		return;
-	}
-
-	if (ioim->proc_rsp_data(ioim) == BFA_TRUE)
-		bfa_sm_send_event(ioim, BFA_IOIM_SM_COMP_GOOD);
-	else
-		bfa_sm_send_event(ioim, BFA_IOIM_SM_COMP);
+	bfa_sm_send_event(ioim, BFA_IOIM_SM_COMP_GOOD);
 }
 
 /*
@@ -3364,35 +2998,6 @@ bfa_ioim_free(struct bfa_ioim_s *ioim)
 void
 bfa_ioim_start(struct bfa_ioim_s *ioim)
 {
-	struct scsi_cmnd *cmnd = (struct scsi_cmnd *)ioim->dio;
-	struct bfa_lps_s	*lps;
-	enum bfa_ioim_lm_status status;
-	struct scsi_lun scsilun;
-
-	if (bfa_get_lun_mask_status(ioim->bfa) == BFA_LUNMASK_ENABLED) {
-		lps = BFA_IOIM_TO_LPS(ioim);
-		int_to_scsilun(cmnd->device->lun, &scsilun);
-		status = bfa_ioim_lm_check(ioim, lps,
-				ioim->itnim->rport, scsilun);
-		if (status == BFA_IOIM_LM_LUN_NOT_RDY) {
-			bfa_sm_send_event(ioim, BFA_IOIM_SM_LM_LUN_NOT_RDY);
-			bfa_stats(ioim->itnim, lm_lun_not_rdy);
-			return;
-		}
-
-		if (status == BFA_IOIM_LM_LUN_NOT_SUP) {
-			bfa_sm_send_event(ioim, BFA_IOIM_SM_LM_LUN_NOT_SUP);
-			bfa_stats(ioim->itnim, lm_lun_not_sup);
-			return;
-		}
-
-		if (status == BFA_IOIM_LM_RPL_DATA_CHANGED) {
-			bfa_sm_send_event(ioim, BFA_IOIM_SM_LM_RPL_DC);
-			bfa_stats(ioim->itnim, lm_rpl_data_changed);
-			return;
-		}
-	}
-
 	bfa_ioim_cb_profile_start(ioim->fcpim, ioim);
 
 	/*
@@ -3432,7 +3037,7 @@ bfa_ioim_abort(struct bfa_ioim_s *ioim)
 static void
 bfa_tskim_sm_uninit(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
 {
-	bfa_trc(tskim->bfa, event);
+	bfa_trc(tskim->bfa, tskim->tsk_tag << 16 | event);
 
 	switch (event) {
 	case BFA_TSKIM_SM_START:
@@ -3470,7 +3075,7 @@ bfa_tskim_sm_uninit(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
 static void
 bfa_tskim_sm_active(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
 {
-	bfa_trc(tskim->bfa, event);
+	bfa_trc(tskim->bfa, tskim->tsk_tag << 16 | event);
 
 	switch (event) {
 	case BFA_TSKIM_SM_DONE:
@@ -3506,7 +3111,7 @@ bfa_tskim_sm_active(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
 static void
 bfa_tskim_sm_cleanup(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
 {
-	bfa_trc(tskim->bfa, event);
+	bfa_trc(tskim->bfa, tskim->tsk_tag << 16 | event);
 
 	switch (event) {
 	case BFA_TSKIM_SM_DONE:
@@ -3515,6 +3120,7 @@ bfa_tskim_sm_cleanup(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
 		 */
 		break;
 
+	case BFA_TSKIM_SM_UTAG:
 	case BFA_TSKIM_SM_CLEANUP_DONE:
 		bfa_sm_set_state(tskim, bfa_tskim_sm_iocleanup);
 		bfa_tskim_cleanup_ios(tskim);
@@ -3534,7 +3140,7 @@ bfa_tskim_sm_cleanup(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
 static void
 bfa_tskim_sm_iocleanup(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
 {
-	bfa_trc(tskim->bfa, event);
+	bfa_trc(tskim->bfa, tskim->tsk_tag << 16 | event);
 
 	switch (event) {
 	case BFA_TSKIM_SM_IOS_DONE:
@@ -3566,7 +3172,7 @@ bfa_tskim_sm_iocleanup(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
 static void
 bfa_tskim_sm_qfull(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
 {
-	bfa_trc(tskim->bfa, event);
+	bfa_trc(tskim->bfa, tskim->tsk_tag << 16 | event);
 
 	switch (event) {
 	case BFA_TSKIM_SM_QRESUME:
@@ -3603,7 +3209,7 @@ static void
 bfa_tskim_sm_cleanup_qfull(struct bfa_tskim_s *tskim,
 		enum bfa_tskim_event event)
 {
-	bfa_trc(tskim->bfa, event);
+	bfa_trc(tskim->bfa, tskim->tsk_tag << 16 | event);
 
 	switch (event) {
 	case BFA_TSKIM_SM_DONE:
@@ -3634,7 +3240,7 @@ bfa_tskim_sm_cleanup_qfull(struct bfa_tskim_s *tskim,
 static void
 bfa_tskim_sm_hcb(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
 {
-	bfa_trc(tskim->bfa, event);
+	bfa_trc(tskim->bfa, tskim->tsk_tag << 16 | event);
 
 	switch (event) {
 	case BFA_TSKIM_SM_HCB:
@@ -3956,6 +3562,8 @@ bfa_tskim_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
 	if (rsp->tsk_status == BFI_TSKIM_STS_ABORTED) {
 		bfa_stats(tskim->itnim, tm_cleanup_comps);
 		bfa_sm_send_event(tskim, BFA_TSKIM_SM_CLEANUP_DONE);
+	} else if (rsp->tsk_status == BFI_TSKIM_STS_UTAG) {
+		bfa_sm_send_event(tskim, BFA_TSKIM_SM_UTAG);
 	} else {
 		bfa_stats(tskim->itnim, tm_fw_rsps);
 		bfa_sm_send_event(tskim, BFA_TSKIM_SM_DONE);
@@ -4095,6 +3703,7 @@ bfa_fcp_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
 	struct bfa_mem_dma_s *seg_ptr;
 	u16	idx, nsegs, num_io_req;
 
+	fcp->max_ioim_reqs = cfg->fwcfg.num_ioim_reqs;
 	fcp->num_ioim_reqs = cfg->fwcfg.num_ioim_reqs;
 	fcp->num_fwtio_reqs  = cfg->fwcfg.num_fwtio_reqs;
 	fcp->num_itns   = cfg->fwcfg.num_rports;
@@ -4117,6 +3726,7 @@ bfa_fcp_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
 		bfa_iocfc_set_snsbase(bfa, idx, fcp->snsbase[idx].pa);
 	}
 
+	fcp->throttle_update_required = 1;
 	bfa_fcpim_attach(fcp, bfad, cfg, pcidev);
 
 	bfa_iotag_attach(fcp);
@@ -4155,23 +3765,33 @@ bfa_fcp_iocdisable(struct bfa_s *bfa)
 {
 	struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa);
 
-	/* Enqueue unused ioim resources to free_q */
-	list_splice_tail_init(&fcp->iotag_unused_q, &fcp->iotag_ioim_free_q);
-
 	bfa_fcpim_iocdisable(fcp);
 }
 
 void
-bfa_fcp_res_recfg(struct bfa_s *bfa, u16 num_ioim_fw)
+bfa_fcp_res_recfg(struct bfa_s *bfa, u16 num_ioim_fw, u16 max_ioim_fw)
 {
 	struct bfa_fcp_mod_s	*mod = BFA_FCP_MOD(bfa);
 	struct list_head	*qe;
 	int	i;
 
+	/* Update io throttle value only once during driver load time */
+	if (!mod->throttle_update_required)
+		return;
+
 	for (i = 0; i < (mod->num_ioim_reqs - num_ioim_fw); i++) {
 		bfa_q_deq_tail(&mod->iotag_ioim_free_q, &qe);
 		list_add_tail(qe, &mod->iotag_unused_q);
 	}
+
+	if (mod->num_ioim_reqs != num_ioim_fw) {
+		bfa_trc(bfa, mod->num_ioim_reqs);
+		bfa_trc(bfa, num_ioim_fw);
+	}
+
+	mod->max_ioim_reqs = max_ioim_fw;
+	mod->num_ioim_reqs = num_ioim_fw;
+	mod->throttle_update_required = 0;
 }
 
 void
@@ -4229,3 +3849,88 @@ bfa_iotag_attach(struct bfa_fcp_mod_s *fcp)
 
 	bfa_mem_kva_curp(fcp) = (u8 *) iotag;
 }
+
+
+/**
+ * To send config req, first try to use throttle value from flash
+ * If 0, then use driver parameter
+ * We need to use min(flash_val, drv_val) because
+ * memory allocation was done based on this cfg'd value
+ */
+u16
+bfa_fcpim_get_throttle_cfg(struct bfa_s *bfa, u16 drv_cfg_param)
+{
+	u16 tmp;
+	struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa);
+
+	/*
+	 * If throttle value from flash is already in effect after driver is
+	 * loaded then until next load, always return current value instead
+	 * of actual flash value
+	 */
+	if (!fcp->throttle_update_required)
+		return (u16)fcp->num_ioim_reqs;
+
+	tmp = bfa_dconf_read_data_valid(bfa) ? bfa_fcpim_read_throttle(bfa) : 0;
+	if (!tmp || (tmp > drv_cfg_param))
+		tmp = drv_cfg_param;
+
+	return tmp;
+}
+
+bfa_status_t
+bfa_fcpim_write_throttle(struct bfa_s *bfa, u16 value)
+{
+	if (!bfa_dconf_get_min_cfg(bfa)) {
+		BFA_DCONF_MOD(bfa)->dconf->throttle_cfg.value = value;
+		BFA_DCONF_MOD(bfa)->dconf->throttle_cfg.is_valid = 1;
+		return BFA_STATUS_OK;
+	}
+
+	return BFA_STATUS_FAILED;
+}
+
+u16
+bfa_fcpim_read_throttle(struct bfa_s *bfa)
+{
+	struct bfa_throttle_cfg_s *throttle_cfg =
+			&(BFA_DCONF_MOD(bfa)->dconf->throttle_cfg);
+
+	return ((!bfa_dconf_get_min_cfg(bfa)) ?
+	       ((throttle_cfg->is_valid == 1) ? (throttle_cfg->value) : 0) : 0);
+}
+
+bfa_status_t
+bfa_fcpim_throttle_set(struct bfa_s *bfa, u16 value)
+{
+	/* in min cfg no commands should run. */
+	if ((bfa_dconf_get_min_cfg(bfa) == BFA_TRUE) ||
+	    (!bfa_dconf_read_data_valid(bfa)))
+		return BFA_STATUS_FAILED;
+
+	bfa_fcpim_write_throttle(bfa, value);
+
+	return bfa_dconf_update(bfa);
+}
+
+bfa_status_t
+bfa_fcpim_throttle_get(struct bfa_s *bfa, void *buf)
+{
+	struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa);
+	struct bfa_defs_fcpim_throttle_s throttle;
+
+	if ((bfa_dconf_get_min_cfg(bfa) == BFA_TRUE) ||
+	    (!bfa_dconf_read_data_valid(bfa)))
+		return BFA_STATUS_FAILED;
+
+	memset(&throttle, 0, sizeof(struct bfa_defs_fcpim_throttle_s));
+
+	throttle.cur_value = (u16)(fcpim->fcp->num_ioim_reqs);
+	throttle.cfg_value = bfa_fcpim_read_throttle(bfa);
+	if (!throttle.cfg_value)
+		throttle.cfg_value = throttle.cur_value;
+	throttle.max_value = (u16)(fcpim->fcp->max_ioim_reqs);
+	memcpy(buf, &throttle, sizeof(struct bfa_defs_fcpim_throttle_s));
+
+	return BFA_STATUS_OK;
+}