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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/[email protected] CC: James Smart <[email protected]> CC: Dick Kennedy <[email protected]> Reviewed-by: James Smart <[email protected]> Signed-off-by: Martin K. Petersen <[email protected]>
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-72
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‎drivers/scsi/lpfc/lpfc_scsi.c‎

Lines changed: 48 additions & 72 deletions
Original file line numberDiff line numberDiff line change
@@ -96,30 +96,6 @@ static void lpfc_vmid_update_entry(struct lpfc_vport *vport, struct scsi_cmnd
9696
static void lpfc_vmid_assign_cs_ctl(struct lpfc_vport *vport,
9797
struct lpfc_vmid *vmid);
9898

99-
static inline unsigned
100-
lpfc_cmd_blksize(struct scsi_cmnd *sc)
101-
{
102-
return sc->device->sector_size;
103-
}
104-
105-
#define LPFC_CHECK_PROTECT_GUARD 1
106-
#define LPFC_CHECK_PROTECT_REF 2
107-
static inline unsigned
108-
lpfc_cmd_protect(struct scsi_cmnd *sc, int flag)
109-
{
110-
return 1;
111-
}
112-
113-
static inline unsigned
114-
lpfc_cmd_guard_csum(struct scsi_cmnd *sc)
115-
{
116-
if (lpfc_prot_group_type(NULL, sc) == LPFC_PG_TYPE_NO_DIF)
117-
return 0;
118-
if (scsi_host_get_guard(sc->device->host) == SHOST_DIX_GUARD_IP)
119-
return 1;
120-
return 0;
121-
}
122-
12399
/**
124100
* lpfc_sli4_set_rsp_sgl_last - Set the last bit in the response sge.
125101
* @phba: Pointer to HBA object.
@@ -1046,13 +1022,13 @@ lpfc_bg_err_inject(struct lpfc_hba *phba, struct scsi_cmnd *sc,
10461022
return 0;
10471023

10481024
sgpe = scsi_prot_sglist(sc);
1049-
lba = t10_pi_ref_tag(scsi_cmd_to_rq(sc));
1025+
lba = scsi_prot_ref_tag(sc);
10501026
if (lba == LPFC_INVALID_REFTAG)
10511027
return 0;
10521028

10531029
/* First check if we need to match the LBA */
10541030
if (phba->lpfc_injerr_lba != LPFC_INJERR_LBA_OFF) {
1055-
blksize = lpfc_cmd_blksize(sc);
1031+
blksize = scsi_prot_interval(sc);
10561032
numblks = (scsi_bufflen(sc) + blksize - 1) / blksize;
10571033

10581034
/* 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,
14411417
{
14421418
uint8_t ret = 0;
14431419

1444-
if (lpfc_cmd_guard_csum(sc)) {
1420+
if (sc->prot_flags & SCSI_PROT_IP_CHECKSUM) {
14451421
switch (scsi_get_prot_op(sc)) {
14461422
case SCSI_PROT_READ_INSERT:
14471423
case SCSI_PROT_WRITE_STRIP:
@@ -1521,7 +1497,7 @@ lpfc_bg_err_opcodes(struct lpfc_hba *phba, struct scsi_cmnd *sc,
15211497
{
15221498
uint8_t ret = 0;
15231499

1524-
if (lpfc_cmd_guard_csum(sc)) {
1500+
if (sc->prot_flags & SCSI_PROT_IP_CHECKSUM) {
15251501
switch (scsi_get_prot_op(sc)) {
15261502
case SCSI_PROT_READ_INSERT:
15271503
case SCSI_PROT_WRITE_STRIP:
@@ -1629,7 +1605,7 @@ lpfc_bg_setup_bpl(struct lpfc_hba *phba, struct scsi_cmnd *sc,
16291605
goto out;
16301606

16311607
/* extract some info from the scsi command for pde*/
1632-
reftag = t10_pi_ref_tag(scsi_cmd_to_rq(sc));
1608+
reftag = scsi_prot_ref_tag(sc);
16331609
if (reftag == LPFC_INVALID_REFTAG)
16341610
goto out;
16351611

@@ -1668,12 +1644,12 @@ lpfc_bg_setup_bpl(struct lpfc_hba *phba, struct scsi_cmnd *sc,
16681644
* protection data is automatically generated, not checked.
16691645
*/
16701646
if (datadir == DMA_FROM_DEVICE) {
1671-
if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD))
1647+
if (sc->prot_flags & SCSI_PROT_GUARD_CHECK)
16721648
bf_set(pde6_ce, pde6, checking);
16731649
else
16741650
bf_set(pde6_ce, pde6, 0);
16751651

1676-
if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF))
1652+
if (sc->prot_flags & SCSI_PROT_REF_CHECK)
16771653
bf_set(pde6_re, pde6, checking);
16781654
else
16791655
bf_set(pde6_re, pde6, 0);
@@ -1791,8 +1767,8 @@ lpfc_bg_setup_bpl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc,
17911767
goto out;
17921768

17931769
/* extract some info from the scsi command */
1794-
blksize = lpfc_cmd_blksize(sc);
1795-
reftag = t10_pi_ref_tag(scsi_cmd_to_rq(sc));
1770+
blksize = scsi_prot_interval(sc);
1771+
reftag = scsi_prot_ref_tag(sc);
17961772
if (reftag == LPFC_INVALID_REFTAG)
17971773
goto out;
17981774

@@ -1832,12 +1808,12 @@ lpfc_bg_setup_bpl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc,
18321808
bf_set(pde6_optx, pde6, txop);
18331809
bf_set(pde6_oprx, pde6, rxop);
18341810

1835-
if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD))
1811+
if (sc->prot_flags & SCSI_PROT_GUARD_CHECK)
18361812
bf_set(pde6_ce, pde6, checking);
18371813
else
18381814
bf_set(pde6_ce, pde6, 0);
18391815

1840-
if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF))
1816+
if (sc->prot_flags & SCSI_PROT_REF_CHECK)
18411817
bf_set(pde6_re, pde6, checking);
18421818
else
18431819
bf_set(pde6_re, pde6, 0);
@@ -2023,7 +1999,7 @@ lpfc_bg_setup_sgl(struct lpfc_hba *phba, struct scsi_cmnd *sc,
20231999
goto out;
20242000

20252001
/* extract some info from the scsi command for pde*/
2026-
reftag = t10_pi_ref_tag(scsi_cmd_to_rq(sc));
2002+
reftag = scsi_prot_ref_tag(sc);
20272003
if (reftag == LPFC_INVALID_REFTAG)
20282004
goto out;
20292005

@@ -2051,12 +2027,12 @@ lpfc_bg_setup_sgl(struct lpfc_hba *phba, struct scsi_cmnd *sc,
20512027
* protection data is automatically generated, not checked.
20522028
*/
20532029
if (sc->sc_data_direction == DMA_FROM_DEVICE) {
2054-
if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD))
2030+
if (sc->prot_flags & SCSI_PROT_GUARD_CHECK)
20552031
bf_set(lpfc_sli4_sge_dif_ce, diseed, checking);
20562032
else
20572033
bf_set(lpfc_sli4_sge_dif_ce, diseed, 0);
20582034

2059-
if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF))
2035+
if (sc->prot_flags & SCSI_PROT_REF_CHECK)
20602036
bf_set(lpfc_sli4_sge_dif_re, diseed, checking);
20612037
else
20622038
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,
22232199
goto out;
22242200

22252201
/* extract some info from the scsi command */
2226-
blksize = lpfc_cmd_blksize(sc);
2227-
reftag = t10_pi_ref_tag(scsi_cmd_to_rq(sc));
2202+
blksize = scsi_prot_interval(sc);
2203+
reftag = scsi_prot_ref_tag(sc);
22282204
if (reftag == LPFC_INVALID_REFTAG)
22292205
goto out;
22302206

@@ -2281,9 +2257,8 @@ lpfc_bg_setup_sgl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc,
22812257
diseed->ref_tag = cpu_to_le32(reftag);
22822258
diseed->ref_tag_tran = diseed->ref_tag;
22832259

2284-
if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD)) {
2260+
if (sc->prot_flags & SCSI_PROT_GUARD_CHECK) {
22852261
bf_set(lpfc_sli4_sge_dif_ce, diseed, checking);
2286-
22872262
} else {
22882263
bf_set(lpfc_sli4_sge_dif_ce, diseed, 0);
22892264
/*
@@ -2300,7 +2275,7 @@ lpfc_bg_setup_sgl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc,
23002275
}
23012276

23022277

2303-
if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF))
2278+
if (sc->prot_flags & SCSI_PROT_REF_CHECK)
23042279
bf_set(lpfc_sli4_sge_dif_re, diseed, checking);
23052280
else
23062281
bf_set(lpfc_sli4_sge_dif_re, diseed, 0);
@@ -2557,7 +2532,7 @@ lpfc_bg_scsi_adjust_dl(struct lpfc_hba *phba,
25572532
* DIF (trailer) attached to it. Must ajust FCP data length
25582533
* to account for the protection data.
25592534
*/
2560-
fcpdl += (fcpdl / lpfc_cmd_blksize(sc)) * 8;
2535+
fcpdl += (fcpdl / scsi_prot_interval(sc)) * 8;
25612536

25622537
return fcpdl;
25632538
}
@@ -2811,14 +2786,14 @@ lpfc_calc_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd)
28112786
* data length is a multiple of the blksize.
28122787
*/
28132788
sgde = scsi_sglist(cmd);
2814-
blksize = lpfc_cmd_blksize(cmd);
2789+
blksize = scsi_prot_interval(cmd);
28152790
data_src = (uint8_t *)sg_virt(sgde);
28162791
data_len = sgde->length;
28172792
if ((data_len & (blksize - 1)) == 0)
28182793
chk_guard = 1;
28192794

28202795
src = (struct scsi_dif_tuple *)sg_virt(sgpe);
2821-
start_ref_tag = t10_pi_ref_tag(scsi_cmd_to_rq(cmd));
2796+
start_ref_tag = scsi_prot_ref_tag(cmd);
28222797
if (start_ref_tag == LPFC_INVALID_REFTAG)
28232798
goto out;
28242799
start_app_tag = src->app_tag;
@@ -2839,7 +2814,8 @@ lpfc_calc_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd)
28392814
/* First Guard Tag checking */
28402815
if (chk_guard) {
28412816
guard_tag = src->guard_tag;
2842-
if (lpfc_cmd_guard_csum(cmd))
2817+
if (cmd->prot_flags
2818+
& SCSI_PROT_IP_CHECKSUM)
28432819
sum = lpfc_bg_csum(data_src,
28442820
blksize);
28452821
else
@@ -2910,7 +2886,7 @@ lpfc_calc_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd)
29102886
phba->bg_guard_err_cnt++;
29112887
lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
29122888
"9069 BLKGRD: reftag %x grd_tag err %x != %x\n",
2913-
t10_pi_ref_tag(scsi_cmd_to_rq(cmd)),
2889+
scsi_prot_ref_tag(cmd),
29142890
sum, guard_tag);
29152891

29162892
} else if (err_type == BGS_REFTAG_ERR_MASK) {
@@ -2920,7 +2896,7 @@ lpfc_calc_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd)
29202896
phba->bg_reftag_err_cnt++;
29212897
lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
29222898
"9066 BLKGRD: reftag %x ref_tag err %x != %x\n",
2923-
t10_pi_ref_tag(scsi_cmd_to_rq(cmd)),
2899+
scsi_prot_ref_tag(cmd),
29242900
ref_tag, start_ref_tag);
29252901

29262902
} else if (err_type == BGS_APPTAG_ERR_MASK) {
@@ -2930,7 +2906,7 @@ lpfc_calc_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd)
29302906
phba->bg_apptag_err_cnt++;
29312907
lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
29322908
"9041 BLKGRD: reftag %x app_tag err %x != %x\n",
2933-
t10_pi_ref_tag(scsi_cmd_to_rq(cmd)),
2909+
scsi_prot_ref_tag(cmd),
29342910
app_tag, start_app_tag);
29352911
}
29362912
}
@@ -2992,7 +2968,7 @@ lpfc_sli4_parse_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd,
29922968
" 0x%x lba 0x%llx blk cnt 0x%x "
29932969
"bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
29942970
(unsigned long long)scsi_get_lba(cmd),
2995-
blk_rq_sectors(scsi_cmd_to_rq(cmd)), bgstat, bghm);
2971+
scsi_logical_block_count(cmd), bgstat, bghm);
29962972
}
29972973

29982974
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,
30072983
" 0x%x lba 0x%llx blk cnt 0x%x "
30082984
"bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
30092985
(unsigned long long)scsi_get_lba(cmd),
3010-
blk_rq_sectors(scsi_cmd_to_rq(cmd)), bgstat, bghm);
2986+
scsi_logical_block_count(cmd), bgstat, bghm);
30112987
}
30122988

30132989
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,
30222998
" 0x%x lba 0x%llx blk cnt 0x%x "
30232999
"bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
30243000
(unsigned long long)scsi_get_lba(cmd),
3025-
blk_rq_sectors(scsi_cmd_to_rq(cmd)), bgstat, bghm);
3001+
scsi_logical_block_count(cmd), bgstat, bghm);
30263002
}
30273003

30283004
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,
30663042
" 0x%x lba 0x%llx blk cnt 0x%x "
30673043
"bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
30683044
(unsigned long long)scsi_get_lba(cmd),
3069-
blk_rq_sectors(scsi_cmd_to_rq(cmd)), bgstat, bghm);
3045+
scsi_logical_block_count(cmd), bgstat, bghm);
30703046

3071-
/* Calcuate what type of error it was */
3047+
/* Calculate what type of error it was */
30723048
lpfc_calc_bg_err(phba, lpfc_cmd);
30733049
}
30743050
return ret;
@@ -3103,8 +3079,8 @@ lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd,
31033079
"9072 BLKGRD: Invalid BG Profile in cmd "
31043080
"0x%x reftag 0x%x blk cnt 0x%x "
31053081
"bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
3106-
t10_pi_ref_tag(scsi_cmd_to_rq(cmd)),
3107-
blk_rq_sectors(scsi_cmd_to_rq(cmd)), bgstat, bghm);
3082+
scsi_prot_ref_tag(cmd),
3083+
scsi_logical_block_count(cmd), bgstat, bghm);
31083084
ret = (-1);
31093085
goto out;
31103086
}
@@ -3115,8 +3091,8 @@ lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd,
31153091
"9073 BLKGRD: Invalid BG PDIF Block in cmd "
31163092
"0x%x reftag 0x%x blk cnt 0x%x "
31173093
"bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
3118-
t10_pi_ref_tag(scsi_cmd_to_rq(cmd)),
3119-
blk_rq_sectors(scsi_cmd_to_rq(cmd)), bgstat, bghm);
3094+
scsi_prot_ref_tag(cmd),
3095+
scsi_logical_block_count(cmd), bgstat, bghm);
31203096
ret = (-1);
31213097
goto out;
31223098
}
@@ -3131,8 +3107,8 @@ lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd,
31313107
"9055 BLKGRD: Guard Tag error in cmd "
31323108
"0x%x reftag 0x%x blk cnt 0x%x "
31333109
"bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
3134-
t10_pi_ref_tag(scsi_cmd_to_rq(cmd)),
3135-
blk_rq_sectors(scsi_cmd_to_rq(cmd)), bgstat, bghm);
3110+
scsi_prot_ref_tag(cmd),
3111+
scsi_logical_block_count(cmd), bgstat, bghm);
31363112
}
31373113

31383114
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,
31463122
"9056 BLKGRD: Ref Tag error in cmd "
31473123
"0x%x reftag 0x%x blk cnt 0x%x "
31483124
"bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
3149-
t10_pi_ref_tag(scsi_cmd_to_rq(cmd)),
3150-
blk_rq_sectors(scsi_cmd_to_rq(cmd)), bgstat, bghm);
3125+
scsi_prot_ref_tag(cmd),
3126+
scsi_logical_block_count(cmd), bgstat, bghm);
31513127
}
31523128

31533129
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,
31613137
"9061 BLKGRD: App Tag error in cmd "
31623138
"0x%x reftag 0x%x blk cnt 0x%x "
31633139
"bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
3164-
t10_pi_ref_tag(scsi_cmd_to_rq(cmd)),
3165-
blk_rq_sectors(scsi_cmd_to_rq(cmd)), bgstat, bghm);
3140+
scsi_prot_ref_tag(cmd),
3141+
scsi_logical_block_count(cmd), bgstat, bghm);
31663142
}
31673143

31683144
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,
32053181
"9057 BLKGRD: Unknown error in cmd "
32063182
"0x%x reftag 0x%x blk cnt 0x%x "
32073183
"bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
3208-
t10_pi_ref_tag(scsi_cmd_to_rq(cmd)),
3209-
blk_rq_sectors(scsi_cmd_to_rq(cmd)), bgstat, bghm);
3184+
scsi_prot_ref_tag(cmd),
3185+
scsi_logical_block_count(cmd), bgstat, bghm);
32103186

3211-
/* Calcuate what type of error it was */
3187+
/* Calculate what type of error it was */
32123188
lpfc_calc_bg_err(phba, lpfc_cmd);
32133189
}
32143190
out:
@@ -5715,8 +5691,8 @@ lpfc_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *cmnd)
57155691
"reftag x%x cnt %u pt %x\n",
57165692
dif_op_str[scsi_get_prot_op(cmnd)],
57175693
cmnd->cmnd[0],
5718-
t10_pi_ref_tag(scsi_cmd_to_rq(cmnd)),
5719-
blk_rq_sectors(scsi_cmd_to_rq(cmnd)),
5694+
scsi_prot_ref_tag(cmnd),
5695+
scsi_logical_block_count(cmnd),
57205696
(cmnd->cmnd[1]>>5));
57215697
}
57225698
err = lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd);
@@ -5727,8 +5703,8 @@ lpfc_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *cmnd)
57275703
"9038 BLKGRD: rcvd PROT_NORMAL cmd: "
57285704
"x%x reftag x%x cnt %u pt %x\n",
57295705
cmnd->cmnd[0],
5730-
t10_pi_ref_tag(scsi_cmd_to_rq(cmnd)),
5731-
blk_rq_sectors(scsi_cmd_to_rq(cmnd)),
5706+
scsi_prot_ref_tag(cmnd),
5707+
scsi_logical_block_count(cmnd),
57325708
(cmnd->cmnd[1]>>5));
57335709
}
57345710
err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd);

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