]> git.baikalelectronics.ru Git - kernel.git/commitdiff
qla2xxx: Improve T10-DIF/PI handling in driver.
authorQuinn Tran <quinn.tran@cavium.com>
Wed, 15 Mar 2017 16:48:49 +0000 (09:48 -0700)
committerNicholas Bellinger <nab@linux-iscsi.org>
Sun, 19 Mar 2017 00:28:36 +0000 (17:28 -0700)
Add routines to support T10 DIF tag.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Anil Gurumurthy <anil.gurumurthy@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
drivers/scsi/qla2xxx/qla_dbg.h
drivers/scsi/qla2xxx/qla_def.h
drivers/scsi/qla2xxx/qla_gbl.h
drivers/scsi/qla2xxx/qla_iocb.c
drivers/scsi/qla2xxx/qla_target.c
drivers/scsi/qla2xxx/qla_target.h
drivers/scsi/qla2xxx/tcm_qla2xxx.c

index e1fc4e66966aeab7b64bfd4ca9c75ca4da1a5be5..c6bffe929fe7dc54b83ac8d89087b4b0d7e0efca 100644 (file)
@@ -348,6 +348,7 @@ ql_log_pci(uint32_t, struct pci_dev *pdev, int32_t, const char *fmt, ...);
 #define ql_dbg_tgt     0x00004000 /* Target mode */
 #define ql_dbg_tgt_mgt 0x00002000 /* Target mode management */
 #define ql_dbg_tgt_tmr 0x00001000 /* Target mode task management */
+#define ql_dbg_tgt_dif  0x00000800 /* Target mode dif */
 
 extern int qla27xx_dump_mpi_ram(struct qla_hw_data *, uint32_t, uint32_t *,
        uint32_t, void **);
index 56cd45fc600ae6e4e24347b20085051042e5b9ae..9d1d3dcf1c878a83a966b9ad892e9726681b7813 100644 (file)
@@ -3127,6 +3127,16 @@ struct bidi_statistics {
        unsigned long long transfer_bytes;
 };
 
+struct qla_tc_param {
+       struct scsi_qla_host *vha;
+       uint32_t blk_sz;
+       uint32_t bufflen;
+       struct scatterlist *sg;
+       struct scatterlist *prot_sg;
+       struct crc_context *ctx;
+       uint8_t *ctx_dsd_alloced;
+};
+
 /* Multi queue support */
 #define MBC_INITIALIZE_MULTIQ 0x1f
 #define QLA_QUE_PAGE 0X1000
index b3d6441d1d90eb27f1908fa27ea1ec28f024b1d9..ca6f122e58656db4085524c55fde822baf51a9c4 100644 (file)
@@ -256,11 +256,11 @@ extern unsigned long qla2x00_get_async_timeout(struct scsi_qla_host *);
 extern void *qla2x00_alloc_iocbs(scsi_qla_host_t *, srb_t *);
 extern int qla2x00_issue_marker(scsi_qla_host_t *, int);
 extern int qla24xx_walk_and_build_sglist_no_difb(struct qla_hw_data *, srb_t *,
-       uint32_t *, uint16_t, struct qla_tgt_cmd *);
+       uint32_t *, uint16_t, struct qla_tc_param *);
 extern int qla24xx_walk_and_build_sglist(struct qla_hw_data *, srb_t *,
-       uint32_t *, uint16_t, struct qla_tgt_cmd *);
+       uint32_t *, uint16_t, struct qla_tc_param *);
 extern int qla24xx_walk_and_build_prot_sglist(struct qla_hw_data *, srb_t *,
-       uint32_t *, uint16_t, struct qla_tgt_cmd *);
+       uint32_t *, uint16_t, struct qla_tc_param *);
 extern int qla24xx_get_one_block_sg(uint32_t, struct qla2_sgx *, uint32_t *);
 extern int qla24xx_configure_prot_mode(srb_t *, uint16_t *);
 extern int qla24xx_build_scsi_crc_2_iocbs(srb_t *,
index 535079280288fbd6554a3ca28e620065b8b9fe98..ea027f6a7fd4e949c1a9a53aad0de00b0a7ee361 100644 (file)
@@ -889,7 +889,7 @@ qla24xx_get_one_block_sg(uint32_t blk_sz, struct qla2_sgx *sgx,
 
 int
 qla24xx_walk_and_build_sglist_no_difb(struct qla_hw_data *ha, srb_t *sp,
-       uint32_t *dsd, uint16_t tot_dsds, struct qla_tgt_cmd *tc)
+       uint32_t *dsd, uint16_t tot_dsds, struct qla_tc_param *tc)
 {
        void *next_dsd;
        uint8_t avail_dsds = 0;
@@ -898,7 +898,6 @@ qla24xx_walk_and_build_sglist_no_difb(struct qla_hw_data *ha, srb_t *sp,
        struct scatterlist *sg_prot;
        uint32_t *cur_dsd = dsd;
        uint16_t        used_dsds = tot_dsds;
-
        uint32_t        prot_int; /* protection interval */
        uint32_t        partial;
        struct qla2_sgx sgx;
@@ -966,7 +965,7 @@ alloc_and_fill:
                        } else {
                                list_add_tail(&dsd_ptr->list,
                                    &(tc->ctx->dsd_list));
-                               tc->ctx_dsd_alloced = 1;
+                               *tc->ctx_dsd_alloced = 1;
                        }
 
 
@@ -1005,7 +1004,7 @@ alloc_and_fill:
 
 int
 qla24xx_walk_and_build_sglist(struct qla_hw_data *ha, srb_t *sp, uint32_t *dsd,
-       uint16_t tot_dsds, struct qla_tgt_cmd *tc)
+       uint16_t tot_dsds, struct qla_tc_param *tc)
 {
        void *next_dsd;
        uint8_t avail_dsds = 0;
@@ -1066,7 +1065,7 @@ qla24xx_walk_and_build_sglist(struct qla_hw_data *ha, srb_t *sp, uint32_t *dsd,
                        } else {
                                list_add_tail(&dsd_ptr->list,
                                    &(tc->ctx->dsd_list));
-                               tc->ctx_dsd_alloced = 1;
+                               *tc->ctx_dsd_alloced = 1;
                        }
 
                        /* add new list to cmd iocb or last list */
@@ -1092,7 +1091,7 @@ qla24xx_walk_and_build_sglist(struct qla_hw_data *ha, srb_t *sp, uint32_t *dsd,
 
 int
 qla24xx_walk_and_build_prot_sglist(struct qla_hw_data *ha, srb_t *sp,
-       uint32_t *dsd, uint16_t tot_dsds, struct qla_tgt_cmd *tc)
+       uint32_t *dsd, uint16_t tot_dsds, struct qla_tc_param *tc)
 {
        void *next_dsd;
        uint8_t avail_dsds = 0;
@@ -1158,7 +1157,7 @@ qla24xx_walk_and_build_prot_sglist(struct qla_hw_data *ha, srb_t *sp,
                        } else {
                                list_add_tail(&dsd_ptr->list,
                                    &(tc->ctx->dsd_list));
-                               tc->ctx_dsd_alloced = 1;
+                               *tc->ctx_dsd_alloced = 1;
                        }
 
                        /* add new list to cmd iocb or last list */
index 925d9b858b241ec5d0245cc00b62f4a97aa994ce..532004981dbd0a0e457cc83e407386cecfd67360 100644 (file)
@@ -143,6 +143,20 @@ static struct workqueue_struct *qla_tgt_wq;
 static DEFINE_MUTEX(qla_tgt_mutex);
 static LIST_HEAD(qla_tgt_glist);
 
+static const char *prot_op_str(u32 prot_op)
+{
+       switch (prot_op) {
+       case TARGET_PROT_NORMAL:        return "NORMAL";
+       case TARGET_PROT_DIN_INSERT:    return "DIN_INSERT";
+       case TARGET_PROT_DOUT_INSERT:   return "DOUT_INSERT";
+       case TARGET_PROT_DIN_STRIP:     return "DIN_STRIP";
+       case TARGET_PROT_DOUT_STRIP:    return "DOUT_STRIP";
+       case TARGET_PROT_DIN_PASS:      return "DIN_PASS";
+       case TARGET_PROT_DOUT_PASS:     return "DOUT_PASS";
+       default:                        return "UNKNOWN";
+       }
+}
+
 /* This API intentionally takes dest as a parameter, rather than returning
  * int value to avoid caller forgetting to issue wmb() after the store */
 void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest)
@@ -2022,6 +2036,70 @@ void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
 }
 EXPORT_SYMBOL(qlt_free_mcmd);
 
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then
+ * reacquire
+ */
+void qlt_send_resp_ctio(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
+    uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq)
+{
+       struct atio_from_isp *atio = &cmd->atio;
+       struct ctio7_to_24xx *ctio;
+       uint16_t temp;
+
+       ql_dbg(ql_dbg_tgt_dif, vha, 0x3066,
+           "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, "
+           "sense_key=%02x, asc=%02x, ascq=%02x",
+           vha, atio, scsi_status, sense_key, asc, ascq);
+
+       ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
+       if (!ctio) {
+               ql_dbg(ql_dbg_async, vha, 0x3067,
+                   "qla2x00t(%ld): %s failed: unable to allocate request packet",
+                   vha->host_no, __func__);
+               goto out;
+       }
+
+       ctio->entry_type = CTIO_TYPE7;
+       ctio->entry_count = 1;
+       ctio->handle = QLA_TGT_SKIP_HANDLE;
+       ctio->nport_handle = cmd->sess->loop_id;
+       ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
+       ctio->vp_index = vha->vp_idx;
+       ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
+       ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
+       ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
+       ctio->exchange_addr = atio->u.isp24.exchange_addr;
+       ctio->u.status1.flags = (atio->u.isp24.attr << 9) |
+           cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS);
+       temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id);
+       ctio->u.status1.ox_id = cpu_to_le16(temp);
+       ctio->u.status1.scsi_status =
+           cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status);
+       ctio->u.status1.response_len = cpu_to_le16(18);
+       ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio));
+
+       if (ctio->u.status1.residual != 0)
+               ctio->u.status1.scsi_status |=
+                   cpu_to_le16(SS_RESIDUAL_UNDER);
+
+       /* Response code and sense key */
+       put_unaligned_le32(((0x70 << 24) | (sense_key << 8)),
+           (&ctio->u.status1.sense_data)[0]);
+       /* Additional sense length */
+       put_unaligned_le32(0x0a, (&ctio->u.status1.sense_data)[1]);
+       /* ASC and ASCQ */
+       put_unaligned_le32(((asc << 24) | (ascq << 16)),
+           (&ctio->u.status1.sense_data)[3]);
+
+       /* Memory Barrier */
+       wmb();
+
+       qla2x00_start_iocbs(vha, vha->req);
+out:
+       return;
+}
+
 /* callback from target fabric module code */
 void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
 {
@@ -2270,7 +2348,7 @@ static int qlt_24xx_build_ctio_pkt(struct qla_tgt_prm *prm,
                 */
                return -EAGAIN;
        } else
-               ha->tgt.cmds[h-1] = prm->cmd;
+               ha->tgt.cmds[h - 1] = prm->cmd;
 
        pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
        pkt->nport_handle = prm->cmd->loop_id;
@@ -2400,6 +2478,50 @@ static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
        return cmd->bufflen > 0;
 }
 
+static void qlt_print_dif_err(struct qla_tgt_prm *prm)
+{
+       struct qla_tgt_cmd *cmd;
+       struct scsi_qla_host *vha;
+
+       /* asc 0x10=dif error */
+       if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) {
+               cmd = prm->cmd;
+               vha = cmd->vha;
+               /* ASCQ */
+               switch (prm->sense_buffer[13]) {
+               case 1:
+                       ql_dbg(ql_dbg_tgt_dif, vha, 0xffff,
+                           "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] "
+                           "se_cmd=%p tag[%x]",
+                           cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
+                           cmd->atio.u.isp24.exchange_addr);
+                       break;
+               case 2:
+                       ql_dbg(ql_dbg_tgt_dif, vha, 0xffff,
+                           "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] "
+                           "se_cmd=%p tag[%x]",
+                           cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
+                           cmd->atio.u.isp24.exchange_addr);
+                       break;
+               case 3:
+                       ql_dbg(ql_dbg_tgt_dif, vha, 0xffff,
+                           "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] "
+                           "se_cmd=%p tag[%x]",
+                           cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
+                           cmd->atio.u.isp24.exchange_addr);
+                       break;
+               default:
+                       ql_dbg(ql_dbg_tgt_dif, vha, 0xffff,
+                           "BE detected Dif ERR: lba[%llx|%lld] len[%x] "
+                           "se_cmd=%p tag[%x]",
+                           cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd,
+                           cmd->atio.u.isp24.exchange_addr);
+                       break;
+               }
+               ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xffff, cmd->cdb, 16);
+       }
+}
+
 /*
  * Called without ha->hardware_lock held
  */
@@ -2521,18 +2643,9 @@ skip_explict_conf:
                for (i = 0; i < prm->sense_buffer_len/4; i++)
                        ((uint32_t *)ctio->u.status1.sense_data)[i] =
                                cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]);
-#if 0
-               if (unlikely((prm->sense_buffer_len % 4) != 0)) {
-                       static int q;
-                       if (q < 10) {
-                               ql_dbg(ql_dbg_tgt, vha, 0xe04f,
-                                   "qla_target(%d): %d bytes of sense "
-                                   "lost", prm->tgt->ha->vp_idx,
-                                   prm->sense_buffer_len % 4);
-                               q++;
-                       }
-               }
-#endif
+
+               qlt_print_dif_err(prm);
+
        } else {
                ctio->u.status1.flags &=
                    ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
@@ -2546,19 +2659,9 @@ skip_explict_conf:
        /* Sense with len > 24, is it possible ??? */
 }
 
-
-
-/* diff  */
 static inline int
 qlt_hba_err_chk_enabled(struct se_cmd *se_cmd)
 {
-       /*
-        * Uncomment when corresponding SCSI changes are done.
-        *
-        if (!sp->cmd->prot_chk)
-        return 0;
-        *
-        */
        switch (se_cmd->prot_op) {
        case TARGET_PROT_DOUT_INSERT:
        case TARGET_PROT_DIN_STRIP:
@@ -2579,16 +2682,38 @@ qlt_hba_err_chk_enabled(struct se_cmd *se_cmd)
        return 0;
 }
 
+static inline int
+qla_tgt_ref_mask_check(struct se_cmd *se_cmd)
+{
+       switch (se_cmd->prot_op) {
+       case TARGET_PROT_DIN_INSERT:
+       case TARGET_PROT_DOUT_INSERT:
+       case TARGET_PROT_DIN_STRIP:
+       case TARGET_PROT_DOUT_STRIP:
+       case TARGET_PROT_DIN_PASS:
+       case TARGET_PROT_DOUT_PASS:
+           return 1;
+       default:
+           return 0;
+       }
+       return 0;
+}
+
 /*
- * qla24xx_set_t10dif_tags_from_cmd - Extract Ref and App tags from SCSI command
- *
+ * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command
  */
-static inline void
-qlt_set_t10dif_tags(struct se_cmd *se_cmd, struct crc_context *ctx)
+static void
+qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx,
+    uint16_t *pfw_prot_opts)
 {
+       struct se_cmd *se_cmd = &cmd->se_cmd;
        uint32_t lba = 0xffffffff & se_cmd->t_task_lba;
+       scsi_qla_host_t *vha = cmd->tgt->vha;
+       struct qla_hw_data *ha = vha->hw;
+       uint32_t t32 = 0;
 
-       /* wait til Mode Sense/Select cmd, modepage Ah, subpage 2
+       /*
+        * wait till Mode Sense/Select cmd, modepage Ah, subpage 2
         * have been immplemented by TCM, before AppTag is avail.
         * Look for modesense_handlers[]
         */
@@ -2596,65 +2721,73 @@ qlt_set_t10dif_tags(struct se_cmd *se_cmd, struct crc_context *ctx)
        ctx->app_tag_mask[0] = 0x0;
        ctx->app_tag_mask[1] = 0x0;
 
+       if (IS_PI_UNINIT_CAPABLE(ha)) {
+               if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) ||
+                   (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT))
+                       *pfw_prot_opts |= PO_DIS_VALD_APP_ESC;
+               else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT)
+                       *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC;
+       }
+
+       t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts);
+
        switch (se_cmd->prot_type) {
        case TARGET_DIF_TYPE0_PROT:
                /*
-                * No check for ql2xenablehba_err_chk, as it would be an
-                * I/O error if hba tag generation is not done.
+                * No check for ql2xenablehba_err_chk, as it
+                * would be an I/O error if hba tag generation
+                * is not done.
                 */
                ctx->ref_tag = cpu_to_le32(lba);
-
-               if (!qlt_hba_err_chk_enabled(se_cmd))
-                       break;
-
                /* enable ALL bytes of the ref tag */
                ctx->ref_tag_mask[0] = 0xff;
                ctx->ref_tag_mask[1] = 0xff;
                ctx->ref_tag_mask[2] = 0xff;
                ctx->ref_tag_mask[3] = 0xff;
                break;
-       /*
-        * For TYpe 1 protection: 16 bit GUARD tag, 32 bit REF tag, and
-        * 16 bit app tag.
-        */
        case TARGET_DIF_TYPE1_PROT:
-               ctx->ref_tag = cpu_to_le32(lba);
-
-               if (!qlt_hba_err_chk_enabled(se_cmd))
-                       break;
-
-               /* enable ALL bytes of the ref tag */
-               ctx->ref_tag_mask[0] = 0xff;
-               ctx->ref_tag_mask[1] = 0xff;
-               ctx->ref_tag_mask[2] = 0xff;
-               ctx->ref_tag_mask[3] = 0xff;
-               break;
-       /*
-        * For TYPE 2 protection: 16 bit GUARD + 32 bit REF tag has to
-        * match LBA in CDB + N
-        */
+           /*
+            * For TYPE 1 protection: 16 bit GUARD tag, 32 bit
+            * REF tag, and 16 bit app tag.
+            */
+           ctx->ref_tag = cpu_to_le32(lba);
+           if (!qla_tgt_ref_mask_check(se_cmd) ||
+               !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
+                   *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
+                   break;
+           }
+           /* enable ALL bytes of the ref tag */
+           ctx->ref_tag_mask[0] = 0xff;
+           ctx->ref_tag_mask[1] = 0xff;
+           ctx->ref_tag_mask[2] = 0xff;
+           ctx->ref_tag_mask[3] = 0xff;
+           break;
        case TARGET_DIF_TYPE2_PROT:
-               ctx->ref_tag = cpu_to_le32(lba);
-
-               if (!qlt_hba_err_chk_enabled(se_cmd))
-                       break;
-
-               /* enable ALL bytes of the ref tag */
-               ctx->ref_tag_mask[0] = 0xff;
-               ctx->ref_tag_mask[1] = 0xff;
-               ctx->ref_tag_mask[2] = 0xff;
-               ctx->ref_tag_mask[3] = 0xff;
-               break;
-
-       /* For Type 3 protection: 16 bit GUARD only */
+           /*
+            * For TYPE 2 protection: 16 bit GUARD + 32 bit REF
+            * tag has to match LBA in CDB + N
+            */
+           ctx->ref_tag = cpu_to_le32(lba);
+           if (!qla_tgt_ref_mask_check(se_cmd) ||
+               !(ha->tgt.tgt_ops->chk_dif_tags(t32))) {
+                   *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
+                   break;
+           }
+           /* enable ALL bytes of the ref tag */
+           ctx->ref_tag_mask[0] = 0xff;
+           ctx->ref_tag_mask[1] = 0xff;
+           ctx->ref_tag_mask[2] = 0xff;
+           ctx->ref_tag_mask[3] = 0xff;
+           break;
        case TARGET_DIF_TYPE3_PROT:
-               ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] =
-                       ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00;
-               break;
+           /* For TYPE 3 protection: 16 bit GUARD only */
+           *pfw_prot_opts |= PO_DIS_REF_TAG_VALD;
+           ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] =
+               ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00;
+           break;
        }
 }
 
-
 static inline int
 qlt_build_ctio_crc2_pkt(struct qla_tgt_prm *prm, scsi_qla_host_t *vha)
 {
@@ -2673,6 +2806,7 @@ qlt_build_ctio_crc2_pkt(struct qla_tgt_prm *prm, scsi_qla_host_t *vha)
        struct se_cmd           *se_cmd = &cmd->se_cmd;
        uint32_t h;
        struct atio_from_isp *atio = &prm->cmd->atio;
+       struct qla_tc_param     tc;
        uint16_t t16;
 
        ha = vha->hw;
@@ -2698,16 +2832,15 @@ qlt_build_ctio_crc2_pkt(struct qla_tgt_prm *prm, scsi_qla_host_t *vha)
        case TARGET_PROT_DIN_INSERT:
        case TARGET_PROT_DOUT_STRIP:
                transfer_length = data_bytes;
-               data_bytes += dif_bytes;
+               if (cmd->prot_sg_cnt)
+                       data_bytes += dif_bytes;
                break;
-
        case TARGET_PROT_DIN_STRIP:
        case TARGET_PROT_DOUT_INSERT:
        case TARGET_PROT_DIN_PASS:
        case TARGET_PROT_DOUT_PASS:
                transfer_length = data_bytes + dif_bytes;
                break;
-
        default:
                BUG();
                break;
@@ -2743,7 +2876,6 @@ qlt_build_ctio_crc2_pkt(struct qla_tgt_prm *prm, scsi_qla_host_t *vha)
                break;
        }
 
-
        /* ---- PKT ---- */
        /* Update entry type to indicate Command Type CRC_2 IOCB */
        pkt->entry_type  = CTIO_CRC2;
@@ -2761,9 +2893,8 @@ qlt_build_ctio_crc2_pkt(struct qla_tgt_prm *prm, scsi_qla_host_t *vha)
        } else
                ha->tgt.cmds[h-1] = prm->cmd;
 
-
        pkt->handle  = h | CTIO_COMPLETION_HANDLE_MARK;
-       pkt->nport_handle = prm->cmd->loop_id;
+       pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id);
        pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT);
        pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
        pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
@@ -2784,12 +2915,10 @@ qlt_build_ctio_crc2_pkt(struct qla_tgt_prm *prm, scsi_qla_host_t *vha)
        else if (cmd->dma_data_direction == DMA_FROM_DEVICE)
                pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT);
 
-
        pkt->dseg_count = prm->tot_dsds;
        /* Fibre channel byte count */
        pkt->transfer_length = cpu_to_le32(transfer_length);
 
-
        /* ----- CRC context -------- */
 
        /* Allocate CRC context from global pool */
@@ -2809,13 +2938,12 @@ qlt_build_ctio_crc2_pkt(struct qla_tgt_prm *prm, scsi_qla_host_t *vha)
        /* Set handle */
        crc_ctx_pkt->handle = pkt->handle;
 
-       qlt_set_t10dif_tags(se_cmd, crc_ctx_pkt);
+       qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts);
 
        pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma));
        pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma));
        pkt->crc_context_len = CRC_CONTEXT_LEN_FW;
 
-
        if (!bundling) {
                cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address;
        } else {
@@ -2836,16 +2964,24 @@ qlt_build_ctio_crc2_pkt(struct qla_tgt_prm *prm, scsi_qla_host_t *vha)
        crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
        crc_ctx_pkt->guard_seed = cpu_to_le16(0);
 
+       memset((uint8_t *)&tc, 0 , sizeof(tc));
+       tc.vha = vha;
+       tc.blk_sz = cmd->blk_sz;
+       tc.bufflen = cmd->bufflen;
+       tc.sg = cmd->sg;
+       tc.prot_sg = cmd->prot_sg;
+       tc.ctx = crc_ctx_pkt;
+       tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced;
 
        /* Walks data segments */
        pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR);
 
        if (!bundling && prm->prot_seg_cnt) {
                if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd,
-                       prm->tot_dsds, cmd))
+                       prm->tot_dsds, &tc))
                        goto crc_queuing_error;
        } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd,
-               (prm->tot_dsds - prm->prot_seg_cnt), cmd))
+               (prm->tot_dsds - prm->prot_seg_cnt), &tc))
                goto crc_queuing_error;
 
        if (bundling && prm->prot_seg_cnt) {
@@ -2854,18 +2990,18 @@ qlt_build_ctio_crc2_pkt(struct qla_tgt_prm *prm, scsi_qla_host_t *vha)
 
                cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address;
                if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd,
-                       prm->prot_seg_cnt, cmd))
+                       prm->prot_seg_cnt, &tc))
                        goto crc_queuing_error;
        }
        return QLA_SUCCESS;
 
 crc_queuing_error:
        /* Cleanup will be performed by the caller */
+       vha->hw->tgt.cmds[h - 1] = NULL;
 
        return QLA_FUNCTION_FAILED;
 }
 
-
 /*
  * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and *
  * QLA_TGT_XMIT_STATUS for >= 24xx silicon
@@ -3113,139 +3249,113 @@ EXPORT_SYMBOL(qlt_rdy_to_xfer);
 
 
 /*
- * Checks the guard or meta-data for the type of error
- * detected by the HBA.
+ * it is assumed either hardware_lock or qpair lock is held.
  */
-static inline int
+static void
 qlt_handle_dif_error(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd,
-               struct ctio_crc_from_fw *sts)
+       struct ctio_crc_from_fw *sts)
 {
        uint8_t         *ap = &sts->actual_dif[0];
        uint8_t         *ep = &sts->expected_dif[0];
-       uint32_t        e_ref_tag, a_ref_tag;
-       uint16_t        e_app_tag, a_app_tag;
-       uint16_t        e_guard, a_guard;
        uint64_t        lba = cmd->se_cmd.t_task_lba;
+       uint8_t scsi_status, sense_key, asc, ascq;
+       unsigned long flags;
 
-       a_guard   = be16_to_cpu(*(uint16_t *)(ap + 0));
-       a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2));
-       a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4));
-
-       e_guard   = be16_to_cpu(*(uint16_t *)(ep + 0));
-       e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2));
-       e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4));
-
-       ql_dbg(ql_dbg_tgt, vha, 0xe075,
-           "iocb(s) %p Returned STATUS.\n", sts);
-
-       ql_dbg(ql_dbg_tgt, vha, 0xf075,
-           "dif check TGT cdb 0x%x lba 0x%llx: [Actual|Expected] Ref Tag[0x%x|0x%x], App Tag [0x%x|0x%x], Guard [0x%x|0x%x]\n",
-           cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
-           a_ref_tag, e_ref_tag, a_app_tag, e_app_tag, a_guard, e_guard);
-
-       /*
-        * Ignore sector if:
-        * For type     3: ref & app tag is all 'f's
-        * For type 0,1,2: app tag is all 'f's
-        */
-       if ((a_app_tag == 0xffff) &&
-           ((cmd->se_cmd.prot_type != TARGET_DIF_TYPE3_PROT) ||
-            (a_ref_tag == 0xffffffff))) {
-               uint32_t blocks_done;
-
-               /* 2TB boundary case covered automatically with this */
-               blocks_done = e_ref_tag - (uint32_t)lba + 1;
-               cmd->se_cmd.bad_sector = e_ref_tag;
-               cmd->se_cmd.pi_err = 0;
-               ql_dbg(ql_dbg_tgt, vha, 0xf074,
-                       "need to return scsi good\n");
-
-               /* Update protection tag */
-               if (cmd->prot_sg_cnt) {
-                       uint32_t i, k = 0, num_ent;
-                       struct scatterlist *sg, *sgl;
-
+       cmd->trc_flags |= TRC_DIF_ERR;
 
-                       sgl = cmd->prot_sg;
+       cmd->a_guard   = be16_to_cpu(*(uint16_t *)(ap + 0));
+       cmd->a_app_tag = be16_to_cpu(*(uint16_t *)(ap + 2));
+       cmd->a_ref_tag = be32_to_cpu(*(uint32_t *)(ap + 4));
 
-                       /* Patch the corresponding protection tags */
-                       for_each_sg(sgl, sg, cmd->prot_sg_cnt, i) {
-                               num_ent = sg_dma_len(sg) / 8;
-                               if (k + num_ent < blocks_done) {
-                                       k += num_ent;
-                                       continue;
-                               }
-                               k = blocks_done;
-                               break;
-                       }
+       cmd->e_guard   = be16_to_cpu(*(uint16_t *)(ep + 0));
+       cmd->e_app_tag = be16_to_cpu(*(uint16_t *)(ep + 2));
+       cmd->e_ref_tag = be32_to_cpu(*(uint32_t *)(ep + 4));
 
-                       if (k != blocks_done) {
-                               ql_log(ql_log_warn, vha, 0xf076,
-                                   "unexpected tag values tag:lba=%u:%llu)\n",
-                                   e_ref_tag, (unsigned long long)lba);
-                               goto out;
-                       }
+       ql_dbg(ql_dbg_tgt_dif, vha, 0xf075,
+           "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state);
 
-#if 0
-                       struct sd_dif_tuple *spt;
-                       /* TODO:
-                        * This section came from initiator. Is it valid here?
-                        * should ulp be override with actual val???
-                        */
-                       spt = page_address(sg_page(sg)) + sg->offset;
-                       spt += j;
+       scsi_status = sense_key = asc = ascq = 0;
 
-                       spt->app_tag = 0xffff;
-                       if (cmd->se_cmd.prot_type == SCSI_PROT_DIF_TYPE3)
-                               spt->ref_tag = 0xffffffff;
-#endif
-               }
-
-               return 0;
-       }
-
-       /* check guard */
-       if (e_guard != a_guard) {
-               cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED;
-               cmd->se_cmd.bad_sector = cmd->se_cmd.t_task_lba;
-
-               ql_log(ql_log_warn, vha, 0xe076,
-                   "Guard ERR: cdb 0x%x lba 0x%llx: [Actual|Expected] Ref Tag[0x%x|0x%x], App Tag [0x%x|0x%x], Guard [0x%x|0x%x] cmd=%p\n",
-                   cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
-                   a_ref_tag, e_ref_tag, a_app_tag, e_app_tag,
-                   a_guard, e_guard, cmd);
-               goto out;
+       /* check appl tag */
+       if (cmd->e_app_tag != cmd->a_app_tag) {
+               ql_dbg(ql_dbg_tgt_dif, vha, 0xffff,
+                       "App Tag ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] "
+                       "Ref[%x|%x], App[%x|%x], "
+                       "Guard [%x|%x] cmd=%p ox_id[%04x]",
+                       cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
+                       cmd->a_ref_tag, cmd->e_ref_tag,
+                       cmd->a_app_tag, cmd->e_app_tag,
+                       cmd->a_guard, cmd->e_guard,
+                       cmd, cmd->atio.u.isp24.fcp_hdr.ox_id);
+
+               cmd->dif_err_code = DIF_ERR_APP;
+               scsi_status = SAM_STAT_CHECK_CONDITION;
+               sense_key = ABORTED_COMMAND;
+               asc = 0x10;
+               ascq = 0x2;
        }
 
        /* check ref tag */
-       if (e_ref_tag != a_ref_tag) {
-               cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED;
-               cmd->se_cmd.bad_sector = e_ref_tag;
-
-               ql_log(ql_log_warn, vha, 0xe077,
-                       "Ref Tag ERR: cdb 0x%x lba 0x%llx: [Actual|Expected] Ref Tag[0x%x|0x%x], App Tag [0x%x|0x%x], Guard [0x%x|0x%x] cmd=%p\n",
-                       cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
-                       a_ref_tag, e_ref_tag, a_app_tag, e_app_tag,
-                       a_guard, e_guard, cmd);
+       if (cmd->e_ref_tag != cmd->a_ref_tag) {
+               ql_dbg(ql_dbg_tgt_dif, vha, 0xffff,
+                       "Ref Tag ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] "
+                       "Ref[%x|%x], App[%x|%x], "
+                       "Guard[%x|%x] cmd=%p ox_id[%04x] ",
+                       cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
+                       cmd->a_ref_tag, cmd->e_ref_tag,
+                       cmd->a_app_tag, cmd->e_app_tag,
+                       cmd->a_guard, cmd->e_guard,
+                       cmd, cmd->atio.u.isp24.fcp_hdr.ox_id);
+
+               cmd->dif_err_code = DIF_ERR_REF;
+               scsi_status = SAM_STAT_CHECK_CONDITION;
+               sense_key = ABORTED_COMMAND;
+               asc = 0x10;
+               ascq = 0x3;
                goto out;
        }
 
-       /* check appl tag */
-       if (e_app_tag != a_app_tag) {
-               cmd->se_cmd.pi_err = TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED;
-               cmd->se_cmd.bad_sector = cmd->se_cmd.t_task_lba;
-
-               ql_log(ql_log_warn, vha, 0xe078,
-                       "App Tag ERR: cdb 0x%x lba 0x%llx: [Actual|Expected] Ref Tag[0x%x|0x%x], App Tag [0x%x|0x%x], Guard [0x%x|0x%x] cmd=%p\n",
-                       cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
-                       a_ref_tag, e_ref_tag, a_app_tag, e_app_tag,
-                       a_guard, e_guard, cmd);
-               goto out;
+       /* check guard */
+       if (cmd->e_guard != cmd->a_guard) {
+               ql_dbg(ql_dbg_tgt_dif, vha, 0xffff,
+                       "Guard ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] "
+                       "Ref[%x|%x], App[%x|%x], "
+                       "Guard [%x|%x] cmd=%p ox_id[%04x]",
+                       cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks,
+                       cmd->a_ref_tag, cmd->e_ref_tag,
+                       cmd->a_app_tag, cmd->e_app_tag,
+                       cmd->a_guard, cmd->e_guard,
+                       cmd, cmd->atio.u.isp24.fcp_hdr.ox_id);
+               cmd->dif_err_code = DIF_ERR_GRD;
+               scsi_status = SAM_STAT_CHECK_CONDITION;
+               sense_key = ABORTED_COMMAND;
+               asc = 0x10;
+               ascq = 0x1;
        }
 out:
-       return 1;
-}
+       switch (cmd->state) {
+       case QLA_TGT_STATE_NEED_DATA:
+               /* handle_data will load DIF error code  */
+               cmd->state = QLA_TGT_STATE_DATA_IN;
+               vha->hw->tgt.tgt_ops->handle_data(cmd);
+               break;
+       default:
+               spin_lock_irqsave(&cmd->cmd_lock, flags);
+               if (cmd->aborted) {
+                       spin_unlock_irqrestore(&cmd->cmd_lock, flags);
+                       vha->hw->tgt.tgt_ops->free_cmd(cmd);
+                       break;
+               }
+               spin_unlock_irqrestore(&cmd->cmd_lock, flags);
 
+               qlt_send_resp_ctio(vha, cmd, scsi_status, sense_key, asc, ascq);
+               /* assume scsi status gets out on the wire.
+                * Will not wait for completion.
+                */
+               vha->hw->tgt.tgt_ops->free_cmd(cmd);
+               break;
+       }
+}
 
 /* If hardware_lock held on entry, might drop it, then reaquire */
 /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
@@ -3552,6 +3662,16 @@ static int qlt_term_ctio_exchange(struct scsi_qla_host *vha, void *ctio,
 {
        int term = 0;
 
+       if (cmd->se_cmd.prot_op)
+               ql_dbg(ql_dbg_tgt_dif, vha, 0xffff,
+                   "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] "
+                   "se_cmd=%p tag[%x] op %#x/%s",
+                    cmd->lba, cmd->lba,
+                    cmd->num_blks, &cmd->se_cmd,
+                    cmd->atio.u.isp24.exchange_addr,
+                    cmd->se_cmd.prot_op,
+                    prot_op_str(cmd->se_cmd.prot_op));
+
        if (ctio != NULL) {
                struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
                term = !(c->flags &
@@ -3769,32 +3889,15 @@ static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle,
                        struct ctio_crc_from_fw *crc =
                                (struct ctio_crc_from_fw *)ctio;
                        ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073,
-                           "qla_target(%d): CTIO with DIF_ERROR status %x received (state %x, se_cmd %p) actual_dif[0x%llx] expect_dif[0x%llx]\n",
+                           "qla_target(%d): CTIO with DIF_ERROR status %x "
+                           "received (state %x, ulp_cmd %p) actual_dif[0x%llx] "
+                           "expect_dif[0x%llx]\n",
                            vha->vp_idx, status, cmd->state, se_cmd,
                            *((u64 *)&crc->actual_dif[0]),
                            *((u64 *)&crc->expected_dif[0]));
 
-                       if (qlt_handle_dif_error(vha, cmd, ctio)) {
-                               if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
-                                       /* scsi Write/xfer rdy complete */
-                                       goto skip_term;
-                               } else {
-                                       /* scsi read/xmit respond complete
-                                        * call handle dif to send scsi status
-                                        * rather than terminate exchange.
-                                        */
-                                       cmd->state = QLA_TGT_STATE_PROCESSED;
-                                       ha->tgt.tgt_ops->handle_dif_err(cmd);
-                                       return;
-                               }
-                       } else {
-                               /* Need to generate a SCSI good completion.
-                                * because FW did not send scsi status.
-                                */
-                               status = 0;
-                               goto skip_term;
-                       }
-                       break;
+                       qlt_handle_dif_error(vha, cmd, ctio);
+                       return;
                }
                default:
                        ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b,
@@ -3817,7 +3920,6 @@ static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle,
                                return;
                }
        }
-skip_term:
 
        if (cmd->state == QLA_TGT_STATE_PROCESSED) {
                cmd->trc_flags |= TRC_CTIO_DONE;
index a7f90dcaae37d3eaad551544c6151785faf84cb9..c35f889b94a6caf733f287290afcb040e4006c57 100644 (file)
@@ -378,6 +378,14 @@ static inline void adjust_corrupted_atio(struct atio_from_isp *atio)
        atio->u.isp24.fcp_cmnd.add_cdb_len = 0;
 }
 
+static inline int get_datalen_for_atio(struct atio_from_isp *atio)
+{
+       int len = atio->u.isp24.fcp_cmnd.add_cdb_len;
+
+       return (be32_to_cpu(get_unaligned((uint32_t *)
+           &atio->u.isp24.fcp_cmnd.add_cdb[len * 4])));
+}
+
 #define CTIO_TYPE7 0x12 /* Continue target I/O entry (for 24xx) */
 
 /*
@@ -667,7 +675,6 @@ struct qla_tgt_func_tmpl {
        int (*handle_cmd)(struct scsi_qla_host *, struct qla_tgt_cmd *,
                        unsigned char *, uint32_t, int, int, int);
        void (*handle_data)(struct qla_tgt_cmd *);
-       void (*handle_dif_err)(struct qla_tgt_cmd *);
        int (*handle_tmr)(struct qla_tgt_mgmt_cmd *, uint32_t, uint16_t,
                        uint32_t);
        void (*free_cmd)(struct qla_tgt_cmd *);
@@ -684,6 +691,8 @@ struct qla_tgt_func_tmpl {
        void (*clear_nacl_from_fcport_map)(struct fc_port *);
        void (*put_sess)(struct fc_port *);
        void (*shutdown_sess)(struct fc_port *);
+       int (*get_dif_tags)(struct qla_tgt_cmd *cmd, uint16_t *pfw_prot_opts);
+       int (*chk_dif_tags)(uint32_t tag);
 };
 
 int qla2x00_wait_for_hba_online(struct scsi_qla_host *);
@@ -720,8 +729,8 @@ int qla2x00_wait_for_hba_online(struct scsi_qla_host *);
 #define QLA_TGT_ABORT_ALL               0xFFFE
 #define QLA_TGT_NEXUS_LOSS_SESS         0xFFFD
 #define QLA_TGT_NEXUS_LOSS              0xFFFC
-#define QLA_TGT_ABTS                                   0xFFFB
-#define QLA_TGT_2G_ABORT_TASK                  0xFFFA
+#define QLA_TGT_ABTS                   0xFFFB
+#define QLA_TGT_2G_ABORT_TASK          0xFFFA
 
 /* Notify Acknowledge flags */
 #define NOTIFY_ACK_RES_COUNT        BIT_8
@@ -845,6 +854,7 @@ enum trace_flags {
        TRC_CMD_FREE = BIT_17,
        TRC_DATA_IN = BIT_18,
        TRC_ABORT = BIT_19,
+       TRC_DIF_ERR = BIT_20,
 };
 
 struct qla_tgt_cmd {
@@ -862,7 +872,6 @@ struct qla_tgt_cmd {
        unsigned int sg_mapped:1;
        unsigned int free_sg:1;
        unsigned int write_data_transferred:1;
-       unsigned int ctx_dsd_alloced:1;
        unsigned int q_full:1;
        unsigned int term_exchg:1;
        unsigned int cmd_sent_to_fw:1;
@@ -885,11 +894,25 @@ struct qla_tgt_cmd {
        struct list_head cmd_list;
 
        struct atio_from_isp atio;
-       /* t10dif */
+
+       uint8_t ctx_dsd_alloced;
+
+       /* T10-DIF */
+#define DIF_ERR_NONE 0
+#define DIF_ERR_GRD 1
+#define DIF_ERR_REF 2
+#define DIF_ERR_APP 3
+       int8_t dif_err_code;
        struct scatterlist *prot_sg;
        uint32_t prot_sg_cnt;
-       uint32_t blk_sz;
+       uint32_t blk_sz, num_blks;
+       uint8_t scsi_status, sense_key, asc, ascq;
+
        struct crc_context *ctx;
+       uint8_t         *cdb;
+       uint64_t        lba;
+       uint16_t        a_guard, e_guard, a_app_tag, e_app_tag;
+       uint32_t        a_ref_tag, e_ref_tag;
 
        uint64_t jiffies_at_alloc;
        uint64_t jiffies_at_free;
@@ -1053,4 +1076,7 @@ extern int qlt_free_qfull_cmds(struct scsi_qla_host *);
 extern void qlt_logo_completion_handler(fc_port_t *, int);
 extern void qlt_do_generation_tick(struct scsi_qla_host *, int *);
 
+void qlt_send_resp_ctio(scsi_qla_host_t *, struct qla_tgt_cmd *, uint8_t,
+    uint8_t, uint8_t, uint8_t);
+
 #endif /* __QLA_TARGET_H */
index 8e8ab0fa9672a6674d3cc9556beeccc44dfc70b2..7443e4efa3aed461f225f6b04bae9223f615dd0b 100644 (file)
@@ -531,6 +531,24 @@ static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
                        return;
                }
 
+               switch (cmd->dif_err_code) {
+               case DIF_ERR_GRD:
+                       cmd->se_cmd.pi_err =
+                           TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED;
+                       break;
+               case DIF_ERR_REF:
+                       cmd->se_cmd.pi_err =
+                           TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED;
+                       break;
+               case DIF_ERR_APP:
+                       cmd->se_cmd.pi_err =
+                           TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED;
+                       break;
+               case DIF_ERR_NONE:
+               default:
+                       break;
+               }
+
                if (cmd->se_cmd.pi_err)
                        transport_generic_request_failure(&cmd->se_cmd,
                                cmd->se_cmd.pi_err);
@@ -555,25 +573,23 @@ static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
        queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work);
 }
 
-static void tcm_qla2xxx_handle_dif_work(struct work_struct *work)
+static int tcm_qla2xxx_chk_dif_tags(uint32_t tag)
 {
-       struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
-
-       /* take an extra kref to prevent cmd free too early.
-        * need to wait for SCSI status/check condition to
-        * finish responding generate by transport_generic_request_failure.
-        */
-       kref_get(&cmd->se_cmd.cmd_kref);
-       transport_generic_request_failure(&cmd->se_cmd, cmd->se_cmd.pi_err);
+       return 0;
 }
 
-/*
- * Called from qla_target.c:qlt_do_ctio_completion()
- */
-static void tcm_qla2xxx_handle_dif_err(struct qla_tgt_cmd *cmd)
+static int tcm_qla2xxx_dif_tags(struct qla_tgt_cmd *cmd,
+    uint16_t *pfw_prot_opts)
 {
-       INIT_WORK(&cmd->work, tcm_qla2xxx_handle_dif_work);
-       queue_work(tcm_qla2xxx_free_wq, &cmd->work);
+       struct se_cmd *se_cmd = &cmd->se_cmd;
+
+       if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_GUARD))
+               *pfw_prot_opts |= PO_DISABLE_GUARD_CHECK;
+
+       if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_APPTAG))
+               *pfw_prot_opts |= PO_DIS_APP_TAG_VALD;
+
+       return 0;
 }
 
 /*
@@ -1610,7 +1626,6 @@ static void tcm_qla2xxx_update_sess(struct fc_port *sess, port_id_t s_id,
 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
        .handle_cmd             = tcm_qla2xxx_handle_cmd,
        .handle_data            = tcm_qla2xxx_handle_data,
-       .handle_dif_err         = tcm_qla2xxx_handle_dif_err,
        .handle_tmr             = tcm_qla2xxx_handle_tmr,
        .free_cmd               = tcm_qla2xxx_free_cmd,
        .free_mcmd              = tcm_qla2xxx_free_mcmd,
@@ -1622,6 +1637,8 @@ static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
        .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
        .put_sess               = tcm_qla2xxx_put_sess,
        .shutdown_sess          = tcm_qla2xxx_shutdown_sess,
+       .get_dif_tags           = tcm_qla2xxx_dif_tags,
+       .chk_dif_tags           = tcm_qla2xxx_chk_dif_tags,
 };
 
 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)