scsi: lpfc: Use the proper SCSI midlayer interfaces for PI

Use the SCSI midlayer interfaces to query protection interval, reference
tag, per-command DIX flags, and logical block count.

Link: https://lore.kernel.org/r/20210817025014.12085-3-martin.petersen@oracle.com
CC: James Smart <james.smart@broadcom.com>
CC: Dick Kennedy <dick.kennedy@broadcom.com>
Reviewed-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

1 files changed, 48 insertions, 72 deletions

diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c
index 9a64349e3acb..0fde1e874c7a 100644
--- a/drivers/scsi/lpfc/lpfc_scsi.c
+++ b/drivers/scsi/lpfc/lpfc_scsi.c
@@ -96,30 +96,6 @@ static void lpfc_vmid_update_entry(struct lpfc_vport *vport, struct scsi_cmnd
 static void lpfc_vmid_assign_cs_ctl(struct lpfc_vport *vport,
 				    struct lpfc_vmid *vmid);
 
-static inline unsigned
-lpfc_cmd_blksize(struct scsi_cmnd *sc)
-{
-	return sc->device->sector_size;
-}
-
-#define LPFC_CHECK_PROTECT_GUARD	1
-#define LPFC_CHECK_PROTECT_REF		2
-static inline unsigned
-lpfc_cmd_protect(struct scsi_cmnd *sc, int flag)
-{
-	return 1;
-}
-
-static inline unsigned
-lpfc_cmd_guard_csum(struct scsi_cmnd *sc)
-{
-	if (lpfc_prot_group_type(NULL, sc) == LPFC_PG_TYPE_NO_DIF)
-		return 0;
-	if (scsi_host_get_guard(sc->device->host) == SHOST_DIX_GUARD_IP)
-		return 1;
-	return 0;
-}
-
 /**
  * lpfc_sli4_set_rsp_sgl_last - Set the last bit in the response sge.
  * @phba: Pointer to HBA object.
@@ -1046,13 +1022,13 @@ lpfc_bg_err_inject(struct lpfc_hba *phba, struct scsi_cmnd *sc,
 		return 0;
 
 	sgpe = scsi_prot_sglist(sc);
-	lba = t10_pi_ref_tag(scsi_cmd_to_rq(sc));
+	lba = scsi_prot_ref_tag(sc);
 	if (lba == LPFC_INVALID_REFTAG)
 		return 0;
 
 	/* First check if we need to match the LBA */
 	if (phba->lpfc_injerr_lba != LPFC_INJERR_LBA_OFF) {
-		blksize = lpfc_cmd_blksize(sc);
+		blksize = scsi_prot_interval(sc);
 		numblks = (scsi_bufflen(sc) + blksize - 1) / blksize;
 
 		/* Make sure we have the right LBA if one is specified */
@@ -1441,7 +1417,7 @@ lpfc_sc_to_bg_opcodes(struct lpfc_hba *phba, struct scsi_cmnd *sc,
 {
 	uint8_t ret = 0;
 
-	if (lpfc_cmd_guard_csum(sc)) {
+	if (sc->prot_flags & SCSI_PROT_IP_CHECKSUM) {
 		switch (scsi_get_prot_op(sc)) {
 		case SCSI_PROT_READ_INSERT:
 		case SCSI_PROT_WRITE_STRIP:
@@ -1521,7 +1497,7 @@ lpfc_bg_err_opcodes(struct lpfc_hba *phba, struct scsi_cmnd *sc,
 {
 	uint8_t ret = 0;
 
-	if (lpfc_cmd_guard_csum(sc)) {
+	if (sc->prot_flags & SCSI_PROT_IP_CHECKSUM) {
 		switch (scsi_get_prot_op(sc)) {
 		case SCSI_PROT_READ_INSERT:
 		case SCSI_PROT_WRITE_STRIP:
@@ -1629,7 +1605,7 @@ lpfc_bg_setup_bpl(struct lpfc_hba *phba, struct scsi_cmnd *sc,
 		goto out;
 
 	/* extract some info from the scsi command for pde*/
-	reftag = t10_pi_ref_tag(scsi_cmd_to_rq(sc));
+	reftag = scsi_prot_ref_tag(sc);
 	if (reftag == LPFC_INVALID_REFTAG)
 		goto out;
 
@@ -1668,12 +1644,12 @@ lpfc_bg_setup_bpl(struct lpfc_hba *phba, struct scsi_cmnd *sc,
 	 * protection data is automatically generated, not checked.
 	 */
 	if (datadir == DMA_FROM_DEVICE) {
-		if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD))
+		if (sc->prot_flags & SCSI_PROT_GUARD_CHECK)
 			bf_set(pde6_ce, pde6, checking);
 		else
 			bf_set(pde6_ce, pde6, 0);
 
-		if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF))
+		if (sc->prot_flags & SCSI_PROT_REF_CHECK)
 			bf_set(pde6_re, pde6, checking);
 		else
 			bf_set(pde6_re, pde6, 0);
@@ -1791,8 +1767,8 @@ lpfc_bg_setup_bpl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc,
 		goto out;
 
 	/* extract some info from the scsi command */
-	blksize = lpfc_cmd_blksize(sc);
-	reftag = t10_pi_ref_tag(scsi_cmd_to_rq(sc));
+	blksize = scsi_prot_interval(sc);
+	reftag = scsi_prot_ref_tag(sc);
 	if (reftag == LPFC_INVALID_REFTAG)
 		goto out;
 
@@ -1832,12 +1808,12 @@ lpfc_bg_setup_bpl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc,
 		bf_set(pde6_optx, pde6, txop);
 		bf_set(pde6_oprx, pde6, rxop);
 
-		if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD))
+		if (sc->prot_flags & SCSI_PROT_GUARD_CHECK)
 			bf_set(pde6_ce, pde6, checking);
 		else
 			bf_set(pde6_ce, pde6, 0);
 
-		if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF))
+		if (sc->prot_flags & SCSI_PROT_REF_CHECK)
 			bf_set(pde6_re, pde6, checking);
 		else
 			bf_set(pde6_re, pde6, 0);
@@ -2023,7 +1999,7 @@ lpfc_bg_setup_sgl(struct lpfc_hba *phba, struct scsi_cmnd *sc,
 		goto out;
 
 	/* extract some info from the scsi command for pde*/
-	reftag = t10_pi_ref_tag(scsi_cmd_to_rq(sc));
+	reftag = scsi_prot_ref_tag(sc);
 	if (reftag == LPFC_INVALID_REFTAG)
 		goto out;
 
@@ -2051,12 +2027,12 @@ lpfc_bg_setup_sgl(struct lpfc_hba *phba, struct scsi_cmnd *sc,
 	 * protection data is automatically generated, not checked.
 	 */
 	if (sc->sc_data_direction == DMA_FROM_DEVICE) {
-		if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD))
+		if (sc->prot_flags & SCSI_PROT_GUARD_CHECK)
 			bf_set(lpfc_sli4_sge_dif_ce, diseed, checking);
 		else
 			bf_set(lpfc_sli4_sge_dif_ce, diseed, 0);
 
-		if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF))
+		if (sc->prot_flags & SCSI_PROT_REF_CHECK)
 			bf_set(lpfc_sli4_sge_dif_re, diseed, checking);
 		else
 			bf_set(lpfc_sli4_sge_dif_re, diseed, 0);
@@ -2223,8 +2199,8 @@ lpfc_bg_setup_sgl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc,
 		goto out;
 
 	/* extract some info from the scsi command */
-	blksize = lpfc_cmd_blksize(sc);
-	reftag = t10_pi_ref_tag(scsi_cmd_to_rq(sc));
+	blksize = scsi_prot_interval(sc);
+	reftag = scsi_prot_ref_tag(sc);
 	if (reftag == LPFC_INVALID_REFTAG)
 		goto out;
 
@@ -2281,9 +2257,8 @@ lpfc_bg_setup_sgl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc,
 		diseed->ref_tag = cpu_to_le32(reftag);
 		diseed->ref_tag_tran = diseed->ref_tag;
 
-		if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD)) {
+		if (sc->prot_flags & SCSI_PROT_GUARD_CHECK) {
 			bf_set(lpfc_sli4_sge_dif_ce, diseed, checking);
-
 		} else {
 			bf_set(lpfc_sli4_sge_dif_ce, diseed, 0);
 			/*
@@ -2300,7 +2275,7 @@ lpfc_bg_setup_sgl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc,
 		}
 
 
-		if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF))
+		if (sc->prot_flags & SCSI_PROT_REF_CHECK)
 			bf_set(lpfc_sli4_sge_dif_re, diseed, checking);
 		else
 			bf_set(lpfc_sli4_sge_dif_re, diseed, 0);
@@ -2557,7 +2532,7 @@ lpfc_bg_scsi_adjust_dl(struct lpfc_hba *phba,
 	 * DIF (trailer) attached to it. Must ajust FCP data length
 	 * to account for the protection data.
 	 */
-	fcpdl += (fcpdl / lpfc_cmd_blksize(sc)) * 8;
+	fcpdl += (fcpdl / scsi_prot_interval(sc)) * 8;
 
 	return fcpdl;
 }
@@ -2811,14 +2786,14 @@ lpfc_calc_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd)
 		 * data length is a multiple of the blksize.
 		 */
 		sgde = scsi_sglist(cmd);
-		blksize = lpfc_cmd_blksize(cmd);
+		blksize = scsi_prot_interval(cmd);
 		data_src = (uint8_t *)sg_virt(sgde);
 		data_len = sgde->length;
 		if ((data_len & (blksize - 1)) == 0)
 			chk_guard = 1;
 
 		src = (struct scsi_dif_tuple *)sg_virt(sgpe);
-		start_ref_tag = t10_pi_ref_tag(scsi_cmd_to_rq(cmd));
+		start_ref_tag = scsi_prot_ref_tag(cmd);
 		if (start_ref_tag == LPFC_INVALID_REFTAG)
 			goto out;
 		start_app_tag = src->app_tag;
@@ -2839,7 +2814,8 @@ lpfc_calc_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd)
 				/* First Guard Tag checking */
 				if (chk_guard) {
 					guard_tag = src->guard_tag;
-					if (lpfc_cmd_guard_csum(cmd))
+					if (cmd->prot_flags
+					    & SCSI_PROT_IP_CHECKSUM)
 						sum = lpfc_bg_csum(data_src,
 								   blksize);
 					else
@@ -2910,7 +2886,7 @@ out:
 		phba->bg_guard_err_cnt++;
 		lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
 				"9069 BLKGRD: reftag %x grd_tag err %x != %x\n",
-				t10_pi_ref_tag(scsi_cmd_to_rq(cmd)),
+				scsi_prot_ref_tag(cmd),
 				sum, guard_tag);
 
 	} else if (err_type == BGS_REFTAG_ERR_MASK) {
@@ -2920,7 +2896,7 @@ out:
 		phba->bg_reftag_err_cnt++;
 		lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
 				"9066 BLKGRD: reftag %x ref_tag err %x != %x\n",
-				t10_pi_ref_tag(scsi_cmd_to_rq(cmd)),
+				scsi_prot_ref_tag(cmd),
 				ref_tag, start_ref_tag);
 
 	} else if (err_type == BGS_APPTAG_ERR_MASK) {
@@ -2930,7 +2906,7 @@ out:
 		phba->bg_apptag_err_cnt++;
 		lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
 				"9041 BLKGRD: reftag %x app_tag err %x != %x\n",
-				t10_pi_ref_tag(scsi_cmd_to_rq(cmd)),
+				scsi_prot_ref_tag(cmd),
 				app_tag, start_app_tag);
 	}
 }
@@ -2992,7 +2968,7 @@ lpfc_sli4_parse_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd,
 				" 0x%x lba 0x%llx blk cnt 0x%x "
 				"bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
 				(unsigned long long)scsi_get_lba(cmd),
-				blk_rq_sectors(scsi_cmd_to_rq(cmd)), bgstat, bghm);
+				scsi_logical_block_count(cmd), bgstat, bghm);
 	}
 
 	if (lpfc_bgs_get_reftag_err(bgstat)) {
@@ -3007,7 +2983,7 @@ lpfc_sli4_parse_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd,
 				" 0x%x lba 0x%llx blk cnt 0x%x "
 				"bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
 				(unsigned long long)scsi_get_lba(cmd),
-				blk_rq_sectors(scsi_cmd_to_rq(cmd)), bgstat, bghm);
+				scsi_logical_block_count(cmd), bgstat, bghm);
 	}
 
 	if (lpfc_bgs_get_apptag_err(bgstat)) {
@@ -3022,7 +2998,7 @@ lpfc_sli4_parse_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd,
 				" 0x%x lba 0x%llx blk cnt 0x%x "
 				"bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
 				(unsigned long long)scsi_get_lba(cmd),
-				blk_rq_sectors(scsi_cmd_to_rq(cmd)), bgstat, bghm);
+				scsi_logical_block_count(cmd), bgstat, bghm);
 	}
 
 	if (lpfc_bgs_get_hi_water_mark_present(bgstat)) {
@@ -3066,9 +3042,9 @@ lpfc_sli4_parse_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd,
 				" 0x%x lba 0x%llx blk cnt 0x%x "
 				"bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
 				(unsigned long long)scsi_get_lba(cmd),
-				blk_rq_sectors(scsi_cmd_to_rq(cmd)), bgstat, bghm);
+				scsi_logical_block_count(cmd), bgstat, bghm);
 
-		/* Calcuate what type of error it was */
+		/* Calculate what type of error it was */
 		lpfc_calc_bg_err(phba, lpfc_cmd);
 	}
 	return ret;
@@ -3103,8 +3079,8 @@ lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd,
 				"9072 BLKGRD: Invalid BG Profile in cmd "
 				"0x%x reftag 0x%x blk cnt 0x%x "
 				"bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
-				t10_pi_ref_tag(scsi_cmd_to_rq(cmd)),
-				blk_rq_sectors(scsi_cmd_to_rq(cmd)), bgstat, bghm);
+				scsi_prot_ref_tag(cmd),
+				scsi_logical_block_count(cmd), bgstat, bghm);
 		ret = (-1);
 		goto out;
 	}
@@ -3115,8 +3091,8 @@ lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd,
 				"9073 BLKGRD: Invalid BG PDIF Block in cmd "
 				"0x%x reftag 0x%x blk cnt 0x%x "
 				"bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
-				t10_pi_ref_tag(scsi_cmd_to_rq(cmd)),
-				blk_rq_sectors(scsi_cmd_to_rq(cmd)), bgstat, bghm);
+				scsi_prot_ref_tag(cmd),
+				scsi_logical_block_count(cmd), bgstat, bghm);
 		ret = (-1);
 		goto out;
 	}
@@ -3131,8 +3107,8 @@ lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd,
 				"9055 BLKGRD: Guard Tag error in cmd "
 				"0x%x reftag 0x%x blk cnt 0x%x "
 				"bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
-				t10_pi_ref_tag(scsi_cmd_to_rq(cmd)),
-				blk_rq_sectors(scsi_cmd_to_rq(cmd)), bgstat, bghm);
+				scsi_prot_ref_tag(cmd),
+				scsi_logical_block_count(cmd), bgstat, bghm);
 	}
 
 	if (lpfc_bgs_get_reftag_err(bgstat)) {
@@ -3146,8 +3122,8 @@ lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd,
 				"9056 BLKGRD: Ref Tag error in cmd "
 				"0x%x reftag 0x%x blk cnt 0x%x "
 				"bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
-				t10_pi_ref_tag(scsi_cmd_to_rq(cmd)),
-				blk_rq_sectors(scsi_cmd_to_rq(cmd)), bgstat, bghm);
+				scsi_prot_ref_tag(cmd),
+				scsi_logical_block_count(cmd), bgstat, bghm);
 	}
 
 	if (lpfc_bgs_get_apptag_err(bgstat)) {
@@ -3161,8 +3137,8 @@ lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd,
 				"9061 BLKGRD: App Tag error in cmd "
 				"0x%x reftag 0x%x blk cnt 0x%x "
 				"bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
-				t10_pi_ref_tag(scsi_cmd_to_rq(cmd)),
-				blk_rq_sectors(scsi_cmd_to_rq(cmd)), bgstat, bghm);
+				scsi_prot_ref_tag(cmd),
+				scsi_logical_block_count(cmd), bgstat, bghm);
 	}
 
 	if (lpfc_bgs_get_hi_water_mark_present(bgstat)) {
@@ -3205,10 +3181,10 @@ lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd,
 				"9057 BLKGRD: Unknown error in cmd "
 				"0x%x reftag 0x%x blk cnt 0x%x "
 				"bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
-				t10_pi_ref_tag(scsi_cmd_to_rq(cmd)),
-				blk_rq_sectors(scsi_cmd_to_rq(cmd)), bgstat, bghm);
+				scsi_prot_ref_tag(cmd),
+				scsi_logical_block_count(cmd), bgstat, bghm);
 
-		/* Calcuate what type of error it was */
+		/* Calculate what type of error it was */
 		lpfc_calc_bg_err(phba, lpfc_cmd);
 	}
 out:
@@ -5715,8 +5691,8 @@ lpfc_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *cmnd)
 					 "reftag x%x cnt %u pt %x\n",
 					 dif_op_str[scsi_get_prot_op(cmnd)],
 					 cmnd->cmnd[0],
-					 t10_pi_ref_tag(scsi_cmd_to_rq(cmnd)),
-					 blk_rq_sectors(scsi_cmd_to_rq(cmnd)),
+					 scsi_prot_ref_tag(cmnd),
+					 scsi_logical_block_count(cmnd),
 					 (cmnd->cmnd[1]>>5));
 		}
 		err = lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd);
@@ -5727,8 +5703,8 @@ lpfc_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *cmnd)
 					 "9038 BLKGRD: rcvd PROT_NORMAL cmd: "
 					 "x%x reftag x%x cnt %u pt %x\n",
 					 cmnd->cmnd[0],
-					 t10_pi_ref_tag(scsi_cmd_to_rq(cmnd)),
-					 blk_rq_sectors(scsi_cmd_to_rq(cmnd)),
+					 scsi_prot_ref_tag(cmnd),
+					 scsi_logical_block_count(cmnd),
 					 (cmnd->cmnd[1]>>5));
 		}
 		err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd);