[SCSI] lpfc 8.3.22: FC Discovery fixes

FC Discovery fixes
- In lpfc_sli4_bpl2sgl byte swapping the SGL in word2.
- In lpfc_sli4_iocb2wqe byteswap the data for CMD_GEN_REQUEST64_CR type WQE.
- In lpfc_sli4_seq_abort_acc do not set the oxid into the iocb's xritag field.
- In lpfc_sli4_seq_abort_acc check the return value of lpfc_sli_issue_iocb.
- Inprove messages in this area.

Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

3 files changed, 81 insertions, 32 deletions

diff --git a/drivers/scsi/lpfc/lpfc_hw.h b/drivers/scsi/lpfc/lpfc_hw.h
index c3a0e62de491..95f11ed79463 100644
--- a/drivers/scsi/lpfc/lpfc_hw.h
+++ b/drivers/scsi/lpfc/lpfc_hw.h
@@ -3632,7 +3632,7 @@ typedef struct _IOCB {	/* IOCB structure */
                 ASYNCSTAT_FIELDS asyncstat; /* async_status iocb */
                 QUE_XRI64_CX_FIELDS quexri64cx; /* que_xri64_cx fields */
                 struct rcv_seq64 rcvseq64;      /* RCV_SEQ64 and RCV_CONT64 */
-                struct sli4_bls_acc bls_acc; /* UNSOL ABTS BLS_ACC params */
+                struct sli4_bls_rsp bls_rsp; /* UNSOL ABTS BLS_RSP params */
                 uint32_t ulpWord[IOCB_WORD_SZ - 2];     /* generic 6 'words' */
         } un;
         union {
diff --git a/drivers/scsi/lpfc/lpfc_hw4.h b/drivers/scsi/lpfc/lpfc_hw4.h
index b42b6994fd94..8433ac0d9fb4 100644
--- a/drivers/scsi/lpfc/lpfc_hw4.h
+++ b/drivers/scsi/lpfc/lpfc_hw4.h
@@ -215,7 +215,7 @@ struct lpfc_sli4_flags {
 #define lpfc_fip_flag_WORD word0
 };
 
-struct sli4_bls_acc {
+struct sli4_bls_rsp {
         uint32_t word0_rsvd;      /* Word0 must be reserved */
         uint32_t word1;
 #define lpfc_abts_orig_SHIFT      0
@@ -231,6 +231,16 @@ struct sli4_bls_acc {
 #define lpfc_abts_oxid_MASK       0x0000FFFF
 #define lpfc_abts_oxid_WORD       word2
         uint32_t word3;
+#define lpfc_vndr_code_SHIFT    0
+#define lpfc_vndr_code_MASK     0x000000FF
+#define lpfc_vndr_code_WORD     word3
+#define lpfc_rsn_expln_SHIFT    8
+#define lpfc_rsn_expln_MASK     0x000000FF
+#define lpfc_rsn_expln_WORD     word3
+#define lpfc_rsn_code_SHIFT     16
+#define lpfc_rsn_code_MASK      0x000000FF
+#define lpfc_rsn_code_WORD      word3
+
         uint32_t word4;
         uint32_t word5_rsvd;    /* Word5 must be reserved */
 };
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index 3218c184be6f..cca5f2d78a54 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -6311,7 +6311,6 @@ lpfc_sli4_bpl2sgl(struct lpfc_hba *phba, struct lpfc_iocbq *piocbq,
                                 bf_set(lpfc_sli4_sge_last, sgl, 1);
                         else
                                 bf_set(lpfc_sli4_sge_last, sgl, 0);
-                        sgl->word2 = cpu_to_le32(sgl->word2);
                         /* swap the size field back to the cpu so we
                          * can assign it to the sgl.
                          */
@@ -6331,6 +6330,7 @@ lpfc_sli4_bpl2sgl(struct lpfc_hba *phba, struct lpfc_iocbq *piocbq,
                                 bf_set(lpfc_sli4_sge_offset, sgl, offset);
                                 offset += bde.tus.f.bdeSize;
                         }
+                        sgl->word2 = cpu_to_le32(sgl->word2);
                         bpl++;
                         sgl++;
                 }
@@ -6576,9 +6576,9 @@ lpfc_sli4_iocb2wqe(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq,
                 numBdes = iocbq->iocb.un.genreq64.bdl.bdeSize /
                         sizeof(struct ulp_bde64);
                 for (i = 0; i < numBdes; i++) {
-                        if (bpl[i].tus.f.bdeFlags != BUFF_TYPE_BDE_64)
-                                break;
                         bde.tus.w = le32_to_cpu(bpl[i].tus.w);
+                        if (bde.tus.f.bdeFlags != BUFF_TYPE_BDE_64)
+                                break;
                         xmit_len += bde.tus.f.bdeSize;
                 }
                 /* word3 iocb=IO_TAG wqe=request_payload_len */
@@ -6668,15 +6668,15 @@ lpfc_sli4_iocb2wqe(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq,
                 xritag = 0;
         break;
         case CMD_XMIT_BLS_RSP64_CX:
-                /* As BLS ABTS-ACC WQE is very different from other WQEs,
+                /* As BLS ABTS RSP WQE is very different from other WQEs,
                  * we re-construct this WQE here based on information in
                  * iocbq from scratch.
                  */
                 memset(wqe, 0, sizeof(union lpfc_wqe));
                 /* OX_ID is invariable to who sent ABTS to CT exchange */
                 bf_set(xmit_bls_rsp64_oxid, &wqe->xmit_bls_rsp,
-                       bf_get(lpfc_abts_oxid, &iocbq->iocb.un.bls_acc));
-                if (bf_get(lpfc_abts_orig, &iocbq->iocb.un.bls_acc) ==
+                       bf_get(lpfc_abts_oxid, &iocbq->iocb.un.bls_rsp));
+                if (bf_get(lpfc_abts_orig, &iocbq->iocb.un.bls_rsp) ==
                     LPFC_ABTS_UNSOL_INT) {
                         /* ABTS sent by initiator to CT exchange, the
                          * RX_ID field will be filled with the newly
@@ -6690,7 +6690,7 @@ lpfc_sli4_iocb2wqe(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq,
                          * RX_ID from ABTS.
                          */
                         bf_set(xmit_bls_rsp64_rxid, &wqe->xmit_bls_rsp,
-                               bf_get(lpfc_abts_rxid, &iocbq->iocb.un.bls_acc));
+                               bf_get(lpfc_abts_rxid, &iocbq->iocb.un.bls_rsp));
                 }
                 bf_set(xmit_bls_rsp64_seqcnthi, &wqe->xmit_bls_rsp, 0xffff);
                 bf_set(wqe_xmit_bls_pt, &wqe->xmit_bls_rsp.wqe_dest, 0x1);
@@ -6701,6 +6701,15 @@ lpfc_sli4_iocb2wqe(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq,
                        LPFC_WQE_LENLOC_NONE);
                 /* Overwrite the pre-set comnd type with OTHER_COMMAND */
                 command_type = OTHER_COMMAND;
+                if (iocbq->iocb.un.xseq64.w5.hcsw.Rctl == FC_RCTL_BA_RJT) {
+                        bf_set(xmit_bls_rsp64_rjt_vspec, &wqe->xmit_bls_rsp,
+                               bf_get(lpfc_vndr_code, &iocbq->iocb.un.bls_rsp));
+                        bf_set(xmit_bls_rsp64_rjt_expc, &wqe->xmit_bls_rsp,
+                               bf_get(lpfc_rsn_expln, &iocbq->iocb.un.bls_rsp));
+                        bf_set(xmit_bls_rsp64_rjt_rsnc, &wqe->xmit_bls_rsp,
+                               bf_get(lpfc_rsn_code, &iocbq->iocb.un.bls_rsp));
+                }
+
         break;
         case CMD_XRI_ABORTED_CX:
         case CMD_CREATE_XRI_CR: /* Do we expect to use this? */
@@ -6749,7 +6758,8 @@ __lpfc_sli_issue_iocb_s4(struct lpfc_hba *phba, uint32_t ring_number,
 
         if (piocb->sli4_xritag == NO_XRI) {
                 if (piocb->iocb.ulpCommand == CMD_ABORT_XRI_CN ||
-                    piocb->iocb.ulpCommand == CMD_CLOSE_XRI_CN)
+                    piocb->iocb.ulpCommand == CMD_CLOSE_XRI_CN ||
+                    piocb->iocb.ulpCommand == CMD_XMIT_BLS_RSP64_CX)
                         sglq = NULL;
                 else {
                         if (pring->txq_cnt) {
@@ -11740,6 +11750,7 @@ lpfc_fc_frame_check(struct lpfc_hba *phba, struct fc_frame_header *fc_hdr)
         static char *rctl_names[] = FC_RCTL_NAMES_INIT;
         char *type_names[] = FC_TYPE_NAMES_INIT;
         struct fc_vft_header *fc_vft_hdr;
+        uint32_t *header = (uint32_t *) fc_hdr;
 
         switch (fc_hdr->fh_r_ctl) {
         case FC_RCTL_DD_UNCAT:          /* uncategorized information */
@@ -11788,10 +11799,15 @@ lpfc_fc_frame_check(struct lpfc_hba *phba, struct fc_frame_header *fc_hdr)
         default:
                 goto drop;
         }
+
         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
-                        "2538 Received frame rctl:%s type:%s\n",
+                        "2538 Received frame rctl:%s type:%s "
+                        "Frame Data:%08x %08x %08x %08x %08x %08x\n",
                         rctl_names[fc_hdr->fh_r_ctl],
-                        type_names[fc_hdr->fh_type]);
+                        type_names[fc_hdr->fh_type],
+                        be32_to_cpu(header[0]), be32_to_cpu(header[1]),
+                        be32_to_cpu(header[2]), be32_to_cpu(header[3]),
+                        be32_to_cpu(header[4]), be32_to_cpu(header[5]));
         return 0;
 drop:
         lpfc_printf_log(phba, KERN_WARNING, LOG_ELS,
@@ -12088,17 +12104,17 @@ lpfc_sli4_abort_partial_seq(struct lpfc_vport *vport,
 }
 
 /**
- * lpfc_sli4_seq_abort_acc_cmpl - Accept seq abort iocb complete handler
+ * lpfc_sli4_seq_abort_rsp_cmpl - BLS ABORT RSP seq abort iocb complete handler
  * @phba: Pointer to HBA context object.
  * @cmd_iocbq: pointer to the command iocbq structure.
  * @rsp_iocbq: pointer to the response iocbq structure.
  *
- * This function handles the sequence abort accept iocb command complete
+ * This function handles the sequence abort response iocb command complete
  * event. It properly releases the memory allocated to the sequence abort
  * accept iocb.
  **/
 static void
-lpfc_sli4_seq_abort_acc_cmpl(struct lpfc_hba *phba,
+lpfc_sli4_seq_abort_rsp_cmpl(struct lpfc_hba *phba,
                              struct lpfc_iocbq *cmd_iocbq,
                              struct lpfc_iocbq *rsp_iocbq)
 {
@@ -12107,15 +12123,15 @@ lpfc_sli4_seq_abort_acc_cmpl(struct lpfc_hba *phba,
 }
 
 /**
- * lpfc_sli4_seq_abort_acc - Accept sequence abort
+ * lpfc_sli4_seq_abort_rsp - bls rsp to sequence abort
  * @phba: Pointer to HBA context object.
  * @fc_hdr: pointer to a FC frame header.
  *
- * This function sends a basic accept to a previous unsol sequence abort
+ * This function sends a basic response to a previous unsol sequence abort
  * event after aborting the sequence handling.
  **/
 static void
-lpfc_sli4_seq_abort_acc(struct lpfc_hba *phba,
+lpfc_sli4_seq_abort_rsp(struct lpfc_hba *phba,
                         struct fc_frame_header *fc_hdr)
 {
         struct lpfc_iocbq *ctiocb = NULL;
@@ -12123,6 +12139,7 @@ lpfc_sli4_seq_abort_acc(struct lpfc_hba *phba,
         uint16_t oxid, rxid;
         uint32_t sid, fctl;
         IOCB_t *icmd;
+        int rc;
 
         if (!lpfc_is_link_up(phba))
                 return;
@@ -12143,7 +12160,7 @@ lpfc_sli4_seq_abort_acc(struct lpfc_hba *phba,
                 + phba->sli4_hba.max_cfg_param.xri_base))
                 lpfc_set_rrq_active(phba, ndlp, rxid, oxid, 0);
 
-        /* Allocate buffer for acc iocb */
+        /* Allocate buffer for rsp iocb */
         ctiocb = lpfc_sli_get_iocbq(phba);
         if (!ctiocb)
                 return;
@@ -12168,32 +12185,54 @@ lpfc_sli4_seq_abort_acc(struct lpfc_hba *phba,
 
         ctiocb->iocb_cmpl = NULL;
         ctiocb->vport = phba->pport;
-        ctiocb->iocb_cmpl = lpfc_sli4_seq_abort_acc_cmpl;
+        ctiocb->iocb_cmpl = lpfc_sli4_seq_abort_rsp_cmpl;
+        ctiocb->sli4_xritag = NO_XRI;
+
+        /* If the oxid maps to the FCP XRI range or if it is out of range,
+         * send a BLS_RJT.  The driver no longer has that exchange.
+         * Override the IOCB for a BA_RJT.
+         */
+        if (oxid > (phba->sli4_hba.max_cfg_param.max_xri +
+                    phba->sli4_hba.max_cfg_param.xri_base) ||
+            oxid > (lpfc_sli4_get_els_iocb_cnt(phba) +
+                    phba->sli4_hba.max_cfg_param.xri_base)) {
+                icmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_BA_RJT;
+                bf_set(lpfc_vndr_code, &icmd->un.bls_rsp, 0);
+                bf_set(lpfc_rsn_expln, &icmd->un.bls_rsp, FC_BA_RJT_INV_XID);
+                bf_set(lpfc_rsn_code, &icmd->un.bls_rsp, FC_BA_RJT_UNABLE);
+        }
 
         if (fctl & FC_FC_EX_CTX) {
                 /* ABTS sent by responder to CT exchange, construction
                  * of BA_ACC will use OX_ID from ABTS for the XRI_TAG
                  * field and RX_ID from ABTS for RX_ID field.
                  */
-                bf_set(lpfc_abts_orig, &icmd->un.bls_acc, LPFC_ABTS_UNSOL_RSP);
-                bf_set(lpfc_abts_rxid, &icmd->un.bls_acc, rxid);
-                ctiocb->sli4_xritag = oxid;
+                bf_set(lpfc_abts_orig, &icmd->un.bls_rsp, LPFC_ABTS_UNSOL_RSP);
+                bf_set(lpfc_abts_rxid, &icmd->un.bls_rsp, rxid);
         } else {
                 /* ABTS sent by initiator to CT exchange, construction
                  * of BA_ACC will need to allocate a new XRI as for the
                  * XRI_TAG and RX_ID fields.
                  */
-                bf_set(lpfc_abts_orig, &icmd->un.bls_acc, LPFC_ABTS_UNSOL_INT);
-                bf_set(lpfc_abts_rxid, &icmd->un.bls_acc, NO_XRI);
-                ctiocb->sli4_xritag = NO_XRI;
+                bf_set(lpfc_abts_orig, &icmd->un.bls_rsp, LPFC_ABTS_UNSOL_INT);
+                bf_set(lpfc_abts_rxid, &icmd->un.bls_rsp, NO_XRI);
         }
-        bf_set(lpfc_abts_oxid, &icmd->un.bls_acc, oxid);
+        bf_set(lpfc_abts_oxid, &icmd->un.bls_rsp, oxid);
 
-        /* Xmit CT abts accept on exchange <xid> */
+        /* Xmit CT abts response on exchange <xid> */
         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
-                        "1200 Xmit CT ABTS ACC on exchange x%x Data: x%x\n",
-                        CMD_XMIT_BLS_RSP64_CX, phba->link_state);
-        lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, ctiocb, 0);
+                        "1200 Send BLS cmd x%x on oxid x%x Data: x%x\n",
+                        icmd->un.xseq64.w5.hcsw.Rctl, oxid, phba->link_state);
+
+        rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, ctiocb, 0);
+        if (rc == IOCB_ERROR) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
+                                "2925 Failed to issue CT ABTS RSP x%x on "
+                                "xri x%x, Data x%x\n",
+                                icmd->un.xseq64.w5.hcsw.Rctl, oxid,
+                                phba->link_state);
+                lpfc_sli_release_iocbq(phba, ctiocb);
+        }
 }
 
 /**
@@ -12241,7 +12280,7 @@ lpfc_sli4_handle_unsol_abort(struct lpfc_vport *vport,
                         lpfc_in_buf_free(phba, &dmabuf->dbuf);
         }
         /* Send basic accept (BA_ACC) to the abort requester */
-        lpfc_sli4_seq_abort_acc(phba, &fc_hdr);
+        lpfc_sli4_seq_abort_rsp(phba, &fc_hdr);
 }
 
 /**