[SCSI] lpfc 8.3.19: Added support for ELS RRQ command
Added support for ELS RRQ command
- Add new routine lpfc_set_rrq_active() to track XRI qualifier state.
- Add new module parameter lpfc_enable_rrq to control RRQ operation.
- Add logic to ELS RRQ completion handler and xri qualifier timeout
to clear XRI qualifier state.
- Use OX_ID from XRI_ABORTED_CQE for RRQ payload.
- Tie abort and XRI_ABORTED_CQE andler to RRQ generation.
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>
diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h
index e86a0d2..746dd3d 100644
--- a/drivers/scsi/lpfc/lpfc.h
+++ b/drivers/scsi/lpfc/lpfc.h
@@ -486,7 +486,7 @@
int (*lpfc_new_scsi_buf)
(struct lpfc_vport *, int);
struct lpfc_scsi_buf * (*lpfc_get_scsi_buf)
- (struct lpfc_hba *);
+ (struct lpfc_hba *, struct lpfc_nodelist *);
int (*lpfc_scsi_prep_dma_buf)
(struct lpfc_hba *, struct lpfc_scsi_buf *);
void (*lpfc_scsi_unprep_dma_buf)
@@ -574,6 +574,7 @@
#define HBA_FIP_SUPPORT 0x800 /* FIP support in HBA */
#define HBA_AER_ENABLED 0x1000 /* AER enabled with HBA */
#define HBA_DEVLOSS_TMO 0x2000 /* HBA in devloss timeout */
+#define HBA_RRQ_ACTIVE 0x4000 /* process the rrq active list */
uint32_t fcp_ring_in_use; /* When polling test if intr-hndlr active*/
struct lpfc_dmabuf slim2p;
@@ -623,6 +624,7 @@
/* HBA Config Parameters */
uint32_t cfg_ack0;
uint32_t cfg_enable_npiv;
+ uint32_t cfg_enable_rrq;
uint32_t cfg_topology;
uint32_t cfg_link_speed;
uint32_t cfg_cr_delay;
@@ -733,6 +735,7 @@
uint32_t total_scsi_bufs;
struct list_head lpfc_iocb_list;
uint32_t total_iocbq_bufs;
+ struct list_head active_rrq_list;
spinlock_t hbalock;
/* pci_mem_pools */
@@ -745,6 +748,7 @@
mempool_t *mbox_mem_pool;
mempool_t *nlp_mem_pool;
+ mempool_t *rrq_pool;
struct fc_host_statistics link_stats;
enum intr_type_t intr_type;
@@ -801,6 +805,7 @@
unsigned long skipped_hb;
struct timer_list hb_tmofunc;
uint8_t hb_outstanding;
+ struct timer_list rrq_tmr;
enum hba_temp_state over_temp_state;
/* ndlp reference management */
spinlock_t ndlp_lock;
diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c
index 45bd72a..6be942a 100644
--- a/drivers/scsi/lpfc/lpfc_attr.c
+++ b/drivers/scsi/lpfc/lpfc_attr.c
@@ -1977,6 +1977,13 @@
lpfc_param_init(enable_npiv, 1, 0, 1);
static DEVICE_ATTR(lpfc_enable_npiv, S_IRUGO, lpfc_enable_npiv_show, NULL);
+int lpfc_enable_rrq;
+module_param(lpfc_enable_rrq, int, 0);
+MODULE_PARM_DESC(lpfc_enable_rrq, "Enable RRQ functionality");
+lpfc_param_show(enable_rrq);
+lpfc_param_init(enable_rrq, 0, 0, 1);
+static DEVICE_ATTR(lpfc_enable_rrq, S_IRUGO, lpfc_enable_rrq_show, NULL);
+
/*
# lpfc_suppress_link_up: Bring link up at initialization
# 0x0 = bring link up (issue MBX_INIT_LINK)
@@ -3394,6 +3401,7 @@
&dev_attr_lpfc_fdmi_on,
&dev_attr_lpfc_max_luns,
&dev_attr_lpfc_enable_npiv,
+ &dev_attr_lpfc_enable_rrq,
&dev_attr_nport_evt_cnt,
&dev_attr_board_mode,
&dev_attr_max_vpi,
@@ -4610,6 +4618,7 @@
lpfc_link_speed_init(phba, lpfc_link_speed);
lpfc_poll_tmo_init(phba, lpfc_poll_tmo);
lpfc_enable_npiv_init(phba, lpfc_enable_npiv);
+ lpfc_enable_rrq_init(phba, lpfc_enable_rrq);
lpfc_use_msi_init(phba, lpfc_use_msi);
lpfc_fcp_imax_init(phba, lpfc_fcp_imax);
lpfc_fcp_wq_count_init(phba, lpfc_fcp_wq_count);
diff --git a/drivers/scsi/lpfc/lpfc_crtn.h b/drivers/scsi/lpfc/lpfc_crtn.h
index 1ea3075..9b95c50 100644
--- a/drivers/scsi/lpfc/lpfc_crtn.h
+++ b/drivers/scsi/lpfc/lpfc_crtn.h
@@ -416,5 +416,13 @@
int __lpfc_sli_issue_iocb(struct lpfc_hba *, uint32_t,
struct lpfc_iocbq *, uint32_t);
uint32_t lpfc_drain_txq(struct lpfc_hba *);
-
-
+void lpfc_clr_rrq_active(struct lpfc_hba *, uint16_t, struct lpfc_node_rrq *);
+int lpfc_test_rrq_active(struct lpfc_hba *, struct lpfc_nodelist *, uint16_t);
+void lpfc_handle_rrq_active(struct lpfc_hba *);
+int lpfc_send_rrq(struct lpfc_hba *, struct lpfc_node_rrq *);
+int lpfc_set_rrq_active(struct lpfc_hba *, struct lpfc_nodelist *,
+ uint16_t, uint16_t, uint16_t);
+void lpfc_cleanup_wt_rrqs(struct lpfc_hba *);
+void lpfc_cleanup_vports_rrqs(struct lpfc_vport *);
+struct lpfc_node_rrq *lpfc_get_active_rrq(struct lpfc_vport *, uint16_t,
+ uint32_t);
diff --git a/drivers/scsi/lpfc/lpfc_disc.h b/drivers/scsi/lpfc/lpfc_disc.h
index 7cae69d..2f73252 100644
--- a/drivers/scsi/lpfc/lpfc_disc.h
+++ b/drivers/scsi/lpfc/lpfc_disc.h
@@ -68,6 +68,12 @@
} un;
};
+#define LPFC_SLI4_MAX_XRI 1024 /* Used to make the ndlp's xri_bitmap */
+#define XRI_BITMAP_ULONGS (LPFC_SLI4_MAX_XRI / BITS_PER_LONG)
+struct lpfc_node_rrqs {
+ unsigned long xri_bitmap[XRI_BITMAP_ULONGS];
+};
+
struct lpfc_nodelist {
struct list_head nlp_listp;
struct lpfc_name nlp_portname;
@@ -110,8 +116,19 @@
atomic_t cmd_pending;
uint32_t cmd_qdepth;
unsigned long last_change_time;
+ struct lpfc_node_rrqs active_rrqs;
struct lpfc_scsicmd_bkt *lat_data; /* Latency data */
};
+struct lpfc_node_rrq {
+ struct list_head list;
+ uint16_t xritag;
+ uint16_t send_rrq;
+ uint16_t rxid;
+ uint32_t nlp_DID; /* FC D_ID of entry */
+ struct lpfc_vport *vport;
+ struct lpfc_nodelist *ndlp;
+ unsigned long rrq_stop_time;
+};
/* Defines for nlp_flag (uint32) */
#define NLP_IGNR_REG_CMPL 0x00000001 /* Rcvd rscn before we cmpl reg login */
diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c
index 04072ce..0705ad8 100644
--- a/drivers/scsi/lpfc/lpfc_els.c
+++ b/drivers/scsi/lpfc/lpfc_els.c
@@ -1290,6 +1290,7 @@
uint32_t rc, keepDID = 0;
int put_node;
int put_rport;
+ struct lpfc_node_rrqs rrq;
/* Fabric nodes can have the same WWPN so we don't bother searching
* by WWPN. Just return the ndlp that was given to us.
@@ -1307,6 +1308,7 @@
if (new_ndlp == ndlp && NLP_CHK_NODE_ACT(new_ndlp))
return ndlp;
+ memset(&rrq.xri_bitmap, 0, sizeof(new_ndlp->active_rrqs.xri_bitmap));
if (!new_ndlp) {
rc = memcmp(&ndlp->nlp_portname, name,
@@ -1327,12 +1329,25 @@
if (!new_ndlp)
return ndlp;
keepDID = new_ndlp->nlp_DID;
- } else
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ memcpy(&rrq.xri_bitmap,
+ &new_ndlp->active_rrqs.xri_bitmap,
+ sizeof(new_ndlp->active_rrqs.xri_bitmap));
+ } else {
keepDID = new_ndlp->nlp_DID;
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ memcpy(&rrq.xri_bitmap,
+ &new_ndlp->active_rrqs.xri_bitmap,
+ sizeof(new_ndlp->active_rrqs.xri_bitmap));
+ }
lpfc_unreg_rpi(vport, new_ndlp);
new_ndlp->nlp_DID = ndlp->nlp_DID;
new_ndlp->nlp_prev_state = ndlp->nlp_prev_state;
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ memcpy(new_ndlp->active_rrqs.xri_bitmap,
+ &ndlp->active_rrqs.xri_bitmap,
+ sizeof(ndlp->active_rrqs.xri_bitmap));
if (ndlp->nlp_flag & NLP_NPR_2B_DISC)
new_ndlp->nlp_flag |= NLP_NPR_2B_DISC;
@@ -1371,12 +1386,20 @@
/* Two ndlps cannot have the same did on the nodelist */
ndlp->nlp_DID = keepDID;
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ memcpy(&ndlp->active_rrqs.xri_bitmap,
+ &rrq.xri_bitmap,
+ sizeof(ndlp->active_rrqs.xri_bitmap));
lpfc_drop_node(vport, ndlp);
}
else {
lpfc_unreg_rpi(vport, ndlp);
/* Two ndlps cannot have the same did */
ndlp->nlp_DID = keepDID;
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ memcpy(&ndlp->active_rrqs.xri_bitmap,
+ &rrq.xri_bitmap,
+ sizeof(ndlp->active_rrqs.xri_bitmap));
lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
/* Since we are swapping the ndlp passed in with the new one
* and the did has already been swapped, copy over the
@@ -1437,6 +1460,73 @@
}
/**
+ * lpfc_cmpl_els_rrq - Completion handled for els RRQs.
+ * @phba: pointer to lpfc hba data structure.
+ * @cmdiocb: pointer to lpfc command iocb data structure.
+ * @rspiocb: pointer to lpfc response iocb data structure.
+ *
+ * This routine will call the clear rrq function to free the rrq and
+ * clear the xri's bit in the ndlp's xri_bitmap. If the ndlp does not
+ * exist then the clear_rrq is still called because the rrq needs to
+ * be freed.
+ **/
+
+static void
+lpfc_cmpl_els_rrq(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
+ struct lpfc_iocbq *rspiocb)
+{
+ struct lpfc_vport *vport = cmdiocb->vport;
+ IOCB_t *irsp;
+ struct lpfc_nodelist *ndlp;
+ struct lpfc_node_rrq *rrq;
+
+ /* we pass cmdiocb to state machine which needs rspiocb as well */
+ rrq = cmdiocb->context_un.rrq;
+ cmdiocb->context_un.rsp_iocb = rspiocb;
+
+ irsp = &rspiocb->iocb;
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
+ "RRQ cmpl: status:x%x/x%x did:x%x",
+ irsp->ulpStatus, irsp->un.ulpWord[4],
+ irsp->un.elsreq64.remoteID);
+
+ ndlp = lpfc_findnode_did(vport, irsp->un.elsreq64.remoteID);
+ if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || ndlp != rrq->ndlp) {
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
+ "2882 RRQ completes to NPort x%x "
+ "with no ndlp. Data: x%x x%x x%x\n",
+ irsp->un.elsreq64.remoteID,
+ irsp->ulpStatus, irsp->un.ulpWord[4],
+ irsp->ulpIoTag);
+ goto out;
+ }
+
+ /* rrq completes to NPort <nlp_DID> */
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
+ "2880 RRQ completes to NPort x%x "
+ "Data: x%x x%x x%x x%x x%x\n",
+ ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
+ irsp->ulpTimeout, rrq->xritag, rrq->rxid);
+
+ if (irsp->ulpStatus) {
+ /* Check for retry */
+ /* RRQ failed Don't print the vport to vport rjts */
+ if (irsp->ulpStatus != IOSTAT_LS_RJT ||
+ (((irsp->un.ulpWord[4]) >> 16 != LSRJT_INVALID_CMD) &&
+ ((irsp->un.ulpWord[4]) >> 16 != LSRJT_UNABLE_TPC)) ||
+ (phba)->pport->cfg_log_verbose & LOG_ELS)
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
+ "2881 RRQ failure DID:%06X Status:x%x/x%x\n",
+ ndlp->nlp_DID, irsp->ulpStatus,
+ irsp->un.ulpWord[4]);
+ }
+out:
+ if (rrq)
+ lpfc_clr_rrq_active(phba, rrq->xritag, rrq);
+ lpfc_els_free_iocb(phba, cmdiocb);
+ return;
+}
+/**
* lpfc_cmpl_els_plogi - Completion callback function for plogi
* @phba: pointer to lpfc hba data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
@@ -3913,6 +4003,47 @@
}
/**
+ * lpfc_els_clear_rrq - Clear the rq that this rrq describes.
+ * @vport: pointer to a virtual N_Port data structure.
+ * @iocb: pointer to the lpfc command iocb data structure.
+ * @ndlp: pointer to a node-list data structure.
+ *
+ * Return
+ **/
+static void
+lpfc_els_clear_rrq(struct lpfc_vport *vport,
+ struct lpfc_iocbq *iocb, struct lpfc_nodelist *ndlp)
+{
+ struct lpfc_hba *phba = vport->phba;
+ uint8_t *pcmd;
+ struct RRQ *rrq;
+ uint16_t rxid;
+ struct lpfc_node_rrq *prrq;
+
+
+ pcmd = (uint8_t *) (((struct lpfc_dmabuf *) iocb->context2)->virt);
+ pcmd += sizeof(uint32_t);
+ rrq = (struct RRQ *)pcmd;
+ rxid = bf_get(rrq_oxid, rrq);
+
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
+ "2883 Clear RRQ for SID:x%x OXID:x%x RXID:x%x"
+ " x%x x%x\n",
+ bf_get(rrq_did, rrq),
+ bf_get(rrq_oxid, rrq),
+ rxid,
+ iocb->iotag, iocb->iocb.ulpContext);
+
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
+ "Clear RRQ: did:x%x flg:x%x exchg:x%.08x",
+ ndlp->nlp_DID, ndlp->nlp_flag, rrq->rrq_exchg);
+ prrq = lpfc_get_active_rrq(vport, rxid, ndlp->nlp_DID);
+ if (prrq)
+ lpfc_clr_rrq_active(phba, rxid, prrq);
+ return;
+}
+
+/**
* lpfc_els_rsp_echo_acc - Issue echo acc response
* @vport: pointer to a virtual N_Port data structure.
* @data: pointer to echo data to return in the accept.
@@ -4801,6 +4932,8 @@
struct lpfc_nodelist *ndlp)
{
lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
+ if (vport->phba->sli_rev == LPFC_SLI_REV4)
+ lpfc_els_clear_rrq(vport, cmdiocb, ndlp);
}
/**
@@ -5203,6 +5336,97 @@
return 0;
}
+/* lpfc_issue_els_rrq - Process an unsolicited rps iocb
+ * @vport: pointer to a host virtual N_Port data structure.
+ * @ndlp: pointer to a node-list data structure.
+ * @did: DID of the target.
+ * @rrq: Pointer to the rrq struct.
+ *
+ * Build a ELS RRQ command and send it to the target. If the issue_iocb is
+ * Successful the the completion handler will clear the RRQ.
+ *
+ * Return codes
+ * 0 - Successfully sent rrq els iocb.
+ * 1 - Failed to send rrq els iocb.
+ **/
+static int
+lpfc_issue_els_rrq(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ uint32_t did, struct lpfc_node_rrq *rrq)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct RRQ *els_rrq;
+ IOCB_t *icmd;
+ struct lpfc_iocbq *elsiocb;
+ uint8_t *pcmd;
+ uint16_t cmdsize;
+ int ret;
+
+
+ if (ndlp != rrq->ndlp)
+ ndlp = rrq->ndlp;
+ if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
+ return 1;
+
+ /* If ndlp is not NULL, we will bump the reference count on it */
+ cmdsize = (sizeof(uint32_t) + sizeof(struct RRQ));
+ elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, did,
+ ELS_CMD_RRQ);
+ if (!elsiocb)
+ return 1;
+
+ icmd = &elsiocb->iocb;
+ pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
+
+ /* For RRQ request, remainder of payload is Exchange IDs */
+ *((uint32_t *) (pcmd)) = ELS_CMD_RRQ;
+ pcmd += sizeof(uint32_t);
+ els_rrq = (struct RRQ *) pcmd;
+
+ bf_set(rrq_oxid, els_rrq, rrq->xritag);
+ bf_set(rrq_rxid, els_rrq, rrq->rxid);
+ bf_set(rrq_did, els_rrq, vport->fc_myDID);
+ els_rrq->rrq = cpu_to_be32(els_rrq->rrq);
+ els_rrq->rrq_exchg = cpu_to_be32(els_rrq->rrq_exchg);
+
+
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
+ "Issue RRQ: did:x%x",
+ did, rrq->xritag, rrq->rxid);
+ elsiocb->context_un.rrq = rrq;
+ elsiocb->iocb_cmpl = lpfc_cmpl_els_rrq;
+ ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+
+ if (ret == IOCB_ERROR) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ return 1;
+ }
+ return 0;
+}
+
+/**
+ * lpfc_send_rrq - Sends ELS RRQ if needed.
+ * @phba: pointer to lpfc hba data structure.
+ * @rrq: pointer to the active rrq.
+ *
+ * This routine will call the lpfc_issue_els_rrq if the rrq is
+ * still active for the xri. If this function returns a failure then
+ * the caller needs to clean up the RRQ by calling lpfc_clr_active_rrq.
+ *
+ * Returns 0 Success.
+ * 1 Failure.
+ **/
+int
+lpfc_send_rrq(struct lpfc_hba *phba, struct lpfc_node_rrq *rrq)
+{
+ struct lpfc_nodelist *ndlp = lpfc_findnode_did(rrq->vport,
+ rrq->nlp_DID);
+ if (lpfc_test_rrq_active(phba, ndlp, rrq->xritag))
+ return lpfc_issue_els_rrq(rrq->vport, ndlp,
+ rrq->nlp_DID, rrq);
+ else
+ return 1;
+}
+
/**
* lpfc_els_rsp_rpl_acc - Issue an accept rpl els command
* @vport: pointer to a host virtual N_Port data structure.
@@ -7373,8 +7597,11 @@
struct sli4_wcqe_xri_aborted *axri)
{
uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri);
+ uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri);
+
struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
unsigned long iflag = 0;
+ struct lpfc_nodelist *ndlp;
struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
spin_lock_irqsave(&phba->hbalock, iflag);
@@ -7383,11 +7610,14 @@
&phba->sli4_hba.lpfc_abts_els_sgl_list, list) {
if (sglq_entry->sli4_xritag == xri) {
list_del(&sglq_entry->list);
+ ndlp = sglq_entry->ndlp;
+ sglq_entry->ndlp = NULL;
list_add_tail(&sglq_entry->list,
&phba->sli4_hba.lpfc_sgl_list);
sglq_entry->state = SGL_FREED;
spin_unlock(&phba->sli4_hba.abts_sgl_list_lock);
spin_unlock_irqrestore(&phba->hbalock, iflag);
+ lpfc_set_rrq_active(phba, ndlp, xri, rxid, 1);
/* Check if TXQ queue needs to be serviced */
if (pring->txq_cnt)
diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c
index e8d27c9..91fa659 100644
--- a/drivers/scsi/lpfc/lpfc_hbadisc.c
+++ b/drivers/scsi/lpfc/lpfc_hbadisc.c
@@ -607,6 +607,8 @@
/* Process SLI4 events */
if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) {
+ if (phba->hba_flag & HBA_RRQ_ACTIVE)
+ lpfc_handle_rrq_active(phba);
if (phba->hba_flag & FCP_XRI_ABORT_EVENT)
lpfc_sli4_fcp_xri_abort_event_proc(phba);
if (phba->hba_flag & ELS_XRI_ABORT_EVENT)
@@ -966,6 +968,7 @@
struct lpfc_vport **vports;
int i;
+ lpfc_cleanup_wt_rrqs(phba);
phba->link_state = LPFC_LINK_UP;
/* Unblock fabric iocbs if they are blocked */
@@ -3161,6 +3164,7 @@
spin_unlock_irq(shost->host_lock);
vport->unreg_vpi_cmpl = VPORT_OK;
mempool_free(pmb, phba->mbox_mem_pool);
+ lpfc_cleanup_vports_rrqs(vport);
/*
* This shost reference might have been taken at the beginning of
* lpfc_vport_delete()
diff --git a/drivers/scsi/lpfc/lpfc_hw.h b/drivers/scsi/lpfc/lpfc_hw.h
index a253216..96ed3ba 100644
--- a/drivers/scsi/lpfc/lpfc_hw.h
+++ b/drivers/scsi/lpfc/lpfc_hw.h
@@ -880,6 +880,24 @@
uint32_t crcCnt;
};
+struct RRQ { /* Structure is in Big Endian format */
+ uint32_t rrq;
+#define rrq_rsvd_SHIFT 24
+#define rrq_rsvd_MASK 0x000000ff
+#define rrq_rsvd_WORD rrq
+#define rrq_did_SHIFT 0
+#define rrq_did_MASK 0x00ffffff
+#define rrq_did_WORD rrq
+ uint32_t rrq_exchg;
+#define rrq_oxid_SHIFT 16
+#define rrq_oxid_MASK 0xffff
+#define rrq_oxid_WORD rrq_exchg
+#define rrq_rxid_SHIFT 0
+#define rrq_rxid_MASK 0xffff
+#define rrq_rxid_WORD rrq_exchg
+};
+
+
struct RTV_RSP { /* Structure is in Big Endian format */
uint32_t ratov;
uint32_t edtov;
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index 432afc7..70ba189 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -930,6 +930,35 @@
}
/**
+ * lpfc_rrq_timeout - The RRQ-timer timeout handler
+ * @ptr: unsigned long holds the pointer to lpfc hba data structure.
+ *
+ * This is the RRQ-timer timeout handler registered to the lpfc driver. When
+ * this timer fires, a RRQ timeout event shall be posted to the lpfc driver
+ * work-port-events bitmap and the worker thread is notified. This timeout
+ * event will be used by the worker thread to invoke the actual timeout
+ * handler routine, lpfc_rrq_handler. Any periodical operations will
+ * be performed in the timeout handler and the RRQ timeout event bit shall
+ * be cleared by the worker thread after it has taken the event bitmap out.
+ **/
+static void
+lpfc_rrq_timeout(unsigned long ptr)
+{
+ struct lpfc_hba *phba;
+ uint32_t tmo_posted;
+ unsigned long iflag;
+
+ phba = (struct lpfc_hba *)ptr;
+ spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
+ tmo_posted = phba->hba_flag & HBA_RRQ_ACTIVE;
+ if (!tmo_posted)
+ phba->hba_flag |= HBA_RRQ_ACTIVE;
+ spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
+ if (!tmo_posted)
+ lpfc_worker_wake_up(phba);
+}
+
+/**
* lpfc_hb_mbox_cmpl - The lpfc heart-beat mailbox command callback function
* @phba: pointer to lpfc hba data structure.
* @pmboxq: pointer to the driver internal queue element for mailbox command.
@@ -3990,6 +4019,9 @@
init_timer(&phba->hb_tmofunc);
phba->hb_tmofunc.function = lpfc_hb_timeout;
phba->hb_tmofunc.data = (unsigned long)phba;
+ init_timer(&phba->rrq_tmr);
+ phba->rrq_tmr.function = lpfc_rrq_timeout;
+ phba->rrq_tmr.data = (unsigned long)phba;
psli = &phba->sli;
/* MBOX heartbeat timer */
@@ -8192,6 +8224,8 @@
goto out_unset_driver_resource_s4;
}
+ INIT_LIST_HEAD(&phba->active_rrq_list);
+
/* Set up common device driver resources */
error = lpfc_setup_driver_resource_phase2(phba);
if (error) {
diff --git a/drivers/scsi/lpfc/lpfc_mem.c b/drivers/scsi/lpfc/lpfc_mem.c
index 8f879e4..cbb48ee 100644
--- a/drivers/scsi/lpfc/lpfc_mem.c
+++ b/drivers/scsi/lpfc/lpfc_mem.c
@@ -113,11 +113,16 @@
goto fail_free_mbox_pool;
if (phba->sli_rev == LPFC_SLI_REV4) {
+ phba->rrq_pool =
+ mempool_create_kmalloc_pool(LPFC_MEM_POOL_SIZE,
+ sizeof(struct lpfc_node_rrq));
+ if (!phba->rrq_pool)
+ goto fail_free_nlp_mem_pool;
phba->lpfc_hrb_pool = pci_pool_create("lpfc_hrb_pool",
phba->pcidev,
LPFC_HDR_BUF_SIZE, align, 0);
if (!phba->lpfc_hrb_pool)
- goto fail_free_nlp_mem_pool;
+ goto fail_free_rrq_mem_pool;
phba->lpfc_drb_pool = pci_pool_create("lpfc_drb_pool",
phba->pcidev,
@@ -147,6 +152,9 @@
fail_free_hrb_pool:
pci_pool_destroy(phba->lpfc_hrb_pool);
phba->lpfc_hrb_pool = NULL;
+ fail_free_rrq_mem_pool:
+ mempool_destroy(phba->rrq_pool);
+ phba->rrq_pool = NULL;
fail_free_nlp_mem_pool:
mempool_destroy(phba->nlp_mem_pool);
phba->nlp_mem_pool = NULL;
diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c
index 581837b..c97751c 100644
--- a/drivers/scsi/lpfc/lpfc_scsi.c
+++ b/drivers/scsi/lpfc/lpfc_scsi.c
@@ -621,10 +621,13 @@
struct sli4_wcqe_xri_aborted *axri)
{
uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri);
+ uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri);
struct lpfc_scsi_buf *psb, *next_psb;
unsigned long iflag = 0;
struct lpfc_iocbq *iocbq;
int i;
+ struct lpfc_nodelist *ndlp;
+ int rrq_empty = 0;
struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
spin_lock_irqsave(&phba->hbalock, iflag);
@@ -637,8 +640,14 @@
psb->status = IOSTAT_SUCCESS;
spin_unlock(
&phba->sli4_hba.abts_scsi_buf_list_lock);
+ ndlp = psb->rdata->pnode;
+ rrq_empty = list_empty(&phba->active_rrq_list);
spin_unlock_irqrestore(&phba->hbalock, iflag);
+ if (ndlp)
+ lpfc_set_rrq_active(phba, ndlp, xri, rxid, 1);
lpfc_release_scsi_buf_s4(phba, psb);
+ if (rrq_empty)
+ lpfc_worker_wake_up(phba);
return;
}
}
@@ -914,7 +923,7 @@
}
/**
- * lpfc_get_scsi_buf - Get a scsi buffer from lpfc_scsi_buf_list of the HBA
+ * lpfc_get_scsi_buf_s3 - Get a scsi buffer from lpfc_scsi_buf_list of the HBA
* @phba: The HBA for which this call is being executed.
*
* This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list
@@ -925,7 +934,7 @@
* Pointer to lpfc_scsi_buf - Success
**/
static struct lpfc_scsi_buf*
-lpfc_get_scsi_buf(struct lpfc_hba * phba)
+lpfc_get_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
{
struct lpfc_scsi_buf * lpfc_cmd = NULL;
struct list_head *scsi_buf_list = &phba->lpfc_scsi_buf_list;
@@ -941,6 +950,67 @@
spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag);
return lpfc_cmd;
}
+/**
+ * lpfc_get_scsi_buf_s4 - Get a scsi buffer from lpfc_scsi_buf_list of the HBA
+ * @phba: The HBA for which this call is being executed.
+ *
+ * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list
+ * and returns to caller.
+ *
+ * Return codes:
+ * NULL - Error
+ * Pointer to lpfc_scsi_buf - Success
+ **/
+static struct lpfc_scsi_buf*
+lpfc_get_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
+{
+ struct lpfc_scsi_buf *lpfc_cmd = NULL;
+ struct lpfc_scsi_buf *start_lpfc_cmd = NULL;
+ struct list_head *scsi_buf_list = &phba->lpfc_scsi_buf_list;
+ unsigned long iflag = 0;
+ int found = 0;
+
+ spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag);
+ list_remove_head(scsi_buf_list, lpfc_cmd, struct lpfc_scsi_buf, list);
+ spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag);
+ while (!found && lpfc_cmd) {
+ if (lpfc_test_rrq_active(phba, ndlp,
+ lpfc_cmd->cur_iocbq.sli4_xritag)) {
+ lpfc_release_scsi_buf_s4(phba, lpfc_cmd);
+ spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag);
+ list_remove_head(scsi_buf_list, lpfc_cmd,
+ struct lpfc_scsi_buf, list);
+ spin_unlock_irqrestore(&phba->scsi_buf_list_lock,
+ iflag);
+ if (lpfc_cmd == start_lpfc_cmd) {
+ lpfc_cmd = NULL;
+ break;
+ } else
+ continue;
+ }
+ found = 1;
+ lpfc_cmd->seg_cnt = 0;
+ lpfc_cmd->nonsg_phys = 0;
+ lpfc_cmd->prot_seg_cnt = 0;
+ }
+ return lpfc_cmd;
+}
+/**
+ * lpfc_get_scsi_buf - Get a scsi buffer from lpfc_scsi_buf_list of the HBA
+ * @phba: The HBA for which this call is being executed.
+ *
+ * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list
+ * and returns to caller.
+ *
+ * Return codes:
+ * NULL - Error
+ * Pointer to lpfc_scsi_buf - Success
+ **/
+static struct lpfc_scsi_buf*
+lpfc_get_scsi_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
+{
+ return phba->lpfc_get_scsi_buf(phba, ndlp);
+}
/**
* lpfc_release_scsi_buf - Return a scsi buffer back to hba scsi buf list
@@ -2744,18 +2814,19 @@
phba->lpfc_scsi_unprep_dma_buf = lpfc_scsi_unprep_dma_buf;
phba->lpfc_scsi_prep_cmnd = lpfc_scsi_prep_cmnd;
- phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf;
switch (dev_grp) {
case LPFC_PCI_DEV_LP:
phba->lpfc_new_scsi_buf = lpfc_new_scsi_buf_s3;
phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s3;
phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s3;
+ phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf_s3;
break;
case LPFC_PCI_DEV_OC:
phba->lpfc_new_scsi_buf = lpfc_new_scsi_buf_s4;
phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s4;
phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s4;
+ phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf_s4;
break;
default:
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
@@ -2764,7 +2835,6 @@
return -ENODEV;
break;
}
- phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf;
phba->lpfc_rampdown_queue_depth = lpfc_rampdown_queue_depth;
phba->lpfc_scsi_cmd_iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl;
return 0;
@@ -2940,7 +3010,7 @@
if (atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth)
goto out_host_busy;
- lpfc_cmd = lpfc_get_scsi_buf(phba);
+ lpfc_cmd = lpfc_get_scsi_buf(phba, ndlp);
if (lpfc_cmd == NULL) {
lpfc_rampdown_queue_depth(phba);
@@ -3239,7 +3309,7 @@
if (!pnode || !NLP_CHK_NODE_ACT(pnode))
return FAILED;
- lpfc_cmd = lpfc_get_scsi_buf(phba);
+ lpfc_cmd = lpfc_get_scsi_buf(phba, rdata->pnode);
if (lpfc_cmd == NULL)
return FAILED;
lpfc_cmd->timeout = 60;
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index bedaa4e..7526015 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -513,8 +513,344 @@
}
/**
+ * __lpfc_set_rrq_active - set RRQ active bit in the ndlp's xri_bitmap.
+ * @phba: Pointer to HBA context object.
+ * @ndlp: nodelist pointer for this target.
+ * @xritag: xri used in this exchange.
+ * @rxid: Remote Exchange ID.
+ * @send_rrq: Flag used to determine if we should send rrq els cmd.
+ *
+ * This function is called with hbalock held.
+ * The active bit is set in the ndlp's active rrq xri_bitmap. Allocates an
+ * rrq struct and adds it to the active_rrq_list.
+ *
+ * returns 0 for rrq slot for this xri
+ * < 0 Were not able to get rrq mem or invalid parameter.
+ **/
+static int
+__lpfc_set_rrq_active(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
+ uint16_t xritag, uint16_t rxid, uint16_t send_rrq)
+{
+ uint16_t adj_xri;
+ struct lpfc_node_rrq *rrq;
+ int empty;
+
+ /*
+ * set the active bit even if there is no mem available.
+ */
+ adj_xri = xritag - phba->sli4_hba.max_cfg_param.xri_base;
+ if (!ndlp)
+ return -EINVAL;
+ if (test_and_set_bit(adj_xri, ndlp->active_rrqs.xri_bitmap))
+ return -EINVAL;
+ rrq = mempool_alloc(phba->rrq_pool, GFP_KERNEL);
+ if (rrq) {
+ rrq->send_rrq = send_rrq;
+ rrq->xritag = xritag;
+ rrq->rrq_stop_time = jiffies + HZ * (phba->fc_ratov + 1);
+ rrq->ndlp = ndlp;
+ rrq->nlp_DID = ndlp->nlp_DID;
+ rrq->vport = ndlp->vport;
+ rrq->rxid = rxid;
+ empty = list_empty(&phba->active_rrq_list);
+ if (phba->cfg_enable_rrq && send_rrq)
+ /*
+ * We need the xri before we can add this to the
+ * phba active rrq list.
+ */
+ rrq->send_rrq = send_rrq;
+ else
+ rrq->send_rrq = 0;
+ list_add_tail(&rrq->list, &phba->active_rrq_list);
+ if (!(phba->hba_flag & HBA_RRQ_ACTIVE)) {
+ phba->hba_flag |= HBA_RRQ_ACTIVE;
+ if (empty)
+ lpfc_worker_wake_up(phba);
+ }
+ return 0;
+ }
+ return -ENOMEM;
+}
+
+/**
+ * __lpfc_clr_rrq_active - Clears RRQ active bit in xri_bitmap.
+ * @phba: Pointer to HBA context object.
+ * @xritag: xri used in this exchange.
+ * @rrq: The RRQ to be cleared.
+ *
+ * This function is called with hbalock held. This function
+ **/
+static void
+__lpfc_clr_rrq_active(struct lpfc_hba *phba,
+ uint16_t xritag,
+ struct lpfc_node_rrq *rrq)
+{
+ uint16_t adj_xri;
+ struct lpfc_nodelist *ndlp;
+
+ ndlp = lpfc_findnode_did(rrq->vport, rrq->nlp_DID);
+
+ /* The target DID could have been swapped (cable swap)
+ * we should use the ndlp from the findnode if it is
+ * available.
+ */
+ if (!ndlp)
+ ndlp = rrq->ndlp;
+
+ adj_xri = xritag - phba->sli4_hba.max_cfg_param.xri_base;
+ if (test_and_clear_bit(adj_xri, ndlp->active_rrqs.xri_bitmap)) {
+ rrq->send_rrq = 0;
+ rrq->xritag = 0;
+ rrq->rrq_stop_time = 0;
+ }
+ mempool_free(rrq, phba->rrq_pool);
+}
+
+/**
+ * lpfc_handle_rrq_active - Checks if RRQ has waithed RATOV.
+ * @phba: Pointer to HBA context object.
+ *
+ * This function is called with hbalock held. This function
+ * Checks if stop_time (ratov from setting rrq active) has
+ * been reached, if it has and the send_rrq flag is set then
+ * it will call lpfc_send_rrq. If the send_rrq flag is not set
+ * then it will just call the routine to clear the rrq and
+ * free the rrq resource.
+ * The timer is set to the next rrq that is going to expire before
+ * leaving the routine.
+ *
+ **/
+void
+lpfc_handle_rrq_active(struct lpfc_hba *phba)
+{
+ struct lpfc_node_rrq *rrq;
+ struct lpfc_node_rrq *nextrrq;
+ unsigned long next_time;
+ unsigned long iflags;
+
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ phba->hba_flag &= ~HBA_RRQ_ACTIVE;
+ next_time = jiffies + HZ * (phba->fc_ratov + 1);
+ list_for_each_entry_safe(rrq, nextrrq,
+ &phba->active_rrq_list, list) {
+ if (time_after(jiffies, rrq->rrq_stop_time)) {
+ list_del(&rrq->list);
+ if (!rrq->send_rrq)
+ /* this call will free the rrq */
+ __lpfc_clr_rrq_active(phba, rrq->xritag, rrq);
+ else {
+ /* if we send the rrq then the completion handler
+ * will clear the bit in the xribitmap.
+ */
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ if (lpfc_send_rrq(phba, rrq)) {
+ lpfc_clr_rrq_active(phba, rrq->xritag,
+ rrq);
+ }
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ }
+ } else if (time_before(rrq->rrq_stop_time, next_time))
+ next_time = rrq->rrq_stop_time;
+ }
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ if (!list_empty(&phba->active_rrq_list))
+ mod_timer(&phba->rrq_tmr, next_time);
+}
+
+/**
+ * lpfc_get_active_rrq - Get the active RRQ for this exchange.
+ * @vport: Pointer to vport context object.
+ * @xri: The xri used in the exchange.
+ * @did: The targets DID for this exchange.
+ *
+ * returns NULL = rrq not found in the phba->active_rrq_list.
+ * rrq = rrq for this xri and target.
+ **/
+struct lpfc_node_rrq *
+lpfc_get_active_rrq(struct lpfc_vport *vport, uint16_t xri, uint32_t did)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_node_rrq *rrq;
+ struct lpfc_node_rrq *nextrrq;
+ unsigned long iflags;
+
+ if (phba->sli_rev != LPFC_SLI_REV4)
+ return NULL;
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ list_for_each_entry_safe(rrq, nextrrq, &phba->active_rrq_list, list) {
+ if (rrq->vport == vport && rrq->xritag == xri &&
+ rrq->nlp_DID == did){
+ list_del(&rrq->list);
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ return rrq;
+ }
+ }
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ return NULL;
+}
+
+/**
+ * lpfc_cleanup_vports_rrqs - Remove and clear the active RRQ for this vport.
+ * @vport: Pointer to vport context object.
+ *
+ * Remove all active RRQs for this vport from the phba->active_rrq_list and
+ * clear the rrq.
+ **/
+void
+lpfc_cleanup_vports_rrqs(struct lpfc_vport *vport)
+
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_node_rrq *rrq;
+ struct lpfc_node_rrq *nextrrq;
+ unsigned long iflags;
+
+ if (phba->sli_rev != LPFC_SLI_REV4)
+ return;
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ list_for_each_entry_safe(rrq, nextrrq, &phba->active_rrq_list, list) {
+ if (rrq->vport == vport) {
+ list_del(&rrq->list);
+ __lpfc_clr_rrq_active(phba, rrq->xritag, rrq);
+ }
+ }
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+}
+
+/**
+ * lpfc_cleanup_wt_rrqs - Remove all rrq's from the active list.
+ * @phba: Pointer to HBA context object.
+ *
+ * Remove all rrqs from the phba->active_rrq_list and free them by
+ * calling __lpfc_clr_active_rrq
+ *
+ **/
+void
+lpfc_cleanup_wt_rrqs(struct lpfc_hba *phba)
+{
+ struct lpfc_node_rrq *rrq;
+ struct lpfc_node_rrq *nextrrq;
+ unsigned long next_time;
+ unsigned long iflags;
+
+ if (phba->sli_rev != LPFC_SLI_REV4)
+ return;
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ phba->hba_flag &= ~HBA_RRQ_ACTIVE;
+ next_time = jiffies + HZ * (phba->fc_ratov * 2);
+ list_for_each_entry_safe(rrq, nextrrq, &phba->active_rrq_list, list) {
+ list_del(&rrq->list);
+ __lpfc_clr_rrq_active(phba, rrq->xritag, rrq);
+ }
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ if (!list_empty(&phba->active_rrq_list))
+ mod_timer(&phba->rrq_tmr, next_time);
+}
+
+
+/**
+ * __lpfc_test_rrq_active - Test RRQ bit in xri_bitmap.
+ * @phba: Pointer to HBA context object.
+ * @ndlp: Targets nodelist pointer for this exchange.
+ * @xritag the xri in the bitmap to test.
+ *
+ * This function is called with hbalock held. This function
+ * returns 0 = rrq not active for this xri
+ * 1 = rrq is valid for this xri.
+ **/
+static int
+__lpfc_test_rrq_active(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
+ uint16_t xritag)
+{
+ uint16_t adj_xri;
+
+ adj_xri = xritag - phba->sli4_hba.max_cfg_param.xri_base;
+ if (!ndlp)
+ return 0;
+ if (test_bit(adj_xri, ndlp->active_rrqs.xri_bitmap))
+ return 1;
+ else
+ return 0;
+}
+
+/**
+ * lpfc_set_rrq_active - set RRQ active bit in xri_bitmap.
+ * @phba: Pointer to HBA context object.
+ * @ndlp: nodelist pointer for this target.
+ * @xritag: xri used in this exchange.
+ * @rxid: Remote Exchange ID.
+ * @send_rrq: Flag used to determine if we should send rrq els cmd.
+ *
+ * This function takes the hbalock.
+ * The active bit is always set in the active rrq xri_bitmap even
+ * if there is no slot avaiable for the other rrq information.
+ *
+ * returns 0 rrq actived for this xri
+ * < 0 No memory or invalid ndlp.
+ **/
+int
+lpfc_set_rrq_active(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
+ uint16_t xritag, uint16_t rxid, uint16_t send_rrq)
+{
+ int ret;
+ unsigned long iflags;
+
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ ret = __lpfc_set_rrq_active(phba, ndlp, xritag, rxid, send_rrq);
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ return ret;
+}
+
+/**
+ * lpfc_clr_rrq_active - Clears RRQ active bit in xri_bitmap.
+ * @phba: Pointer to HBA context object.
+ * @xritag: xri used in this exchange.
+ * @rrq: The RRQ to be cleared.
+ *
+ * This function is takes the hbalock.
+ **/
+void
+lpfc_clr_rrq_active(struct lpfc_hba *phba,
+ uint16_t xritag,
+ struct lpfc_node_rrq *rrq)
+{
+ unsigned long iflags;
+
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ __lpfc_clr_rrq_active(phba, xritag, rrq);
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ return;
+}
+
+
+
+/**
+ * lpfc_test_rrq_active - Test RRQ bit in xri_bitmap.
+ * @phba: Pointer to HBA context object.
+ * @ndlp: Targets nodelist pointer for this exchange.
+ * @xritag the xri in the bitmap to test.
+ *
+ * This function takes the hbalock.
+ * returns 0 = rrq not active for this xri
+ * 1 = rrq is valid for this xri.
+ **/
+int
+lpfc_test_rrq_active(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
+ uint16_t xritag)
+{
+ int ret;
+ unsigned long iflags;
+
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ ret = __lpfc_test_rrq_active(phba, ndlp, xritag);
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ return ret;
+}
+
+/**
* __lpfc_sli_get_sglq - Allocates an iocb object from sgl pool
* @phba: Pointer to HBA context object.
+ * @piocb: Pointer to the iocbq.
*
* This function is called with hbalock held. This function
* Gets a new driver sglq object from the sglq list. If the
@@ -522,17 +858,53 @@
* allocated sglq object else it returns NULL.
**/
static struct lpfc_sglq *
-__lpfc_sli_get_sglq(struct lpfc_hba *phba)
+__lpfc_sli_get_sglq(struct lpfc_hba *phba, struct lpfc_iocbq *piocbq)
{
struct list_head *lpfc_sgl_list = &phba->sli4_hba.lpfc_sgl_list;
struct lpfc_sglq *sglq = NULL;
+ struct lpfc_sglq *start_sglq = NULL;
uint16_t adj_xri;
+ struct lpfc_scsi_buf *lpfc_cmd;
+ struct lpfc_nodelist *ndlp;
+ int found = 0;
+
+ if (piocbq->iocb_flag & LPFC_IO_FCP) {
+ lpfc_cmd = (struct lpfc_scsi_buf *) piocbq->context1;
+ ndlp = lpfc_cmd->rdata->pnode;
+ } else if (piocbq->iocb.ulpCommand == CMD_GEN_REQUEST64_CR)
+ ndlp = piocbq->context_un.ndlp;
+ else if (piocbq->iocb.ulpCommand == CMD_XMIT_BLS_RSP64_CX)
+ ndlp = lpfc_findnode_did(piocbq->vport,
+ piocbq->iocb.ulpContext);
+ else
+ ndlp = piocbq->context1;
+
list_remove_head(lpfc_sgl_list, sglq, struct lpfc_sglq, list);
- if (!sglq)
- return NULL;
- adj_xri = sglq->sli4_xritag - phba->sli4_hba.max_cfg_param.xri_base;
- phba->sli4_hba.lpfc_sglq_active_list[adj_xri] = sglq;
- sglq->state = SGL_ALLOCATED;
+ start_sglq = sglq;
+ while (!found) {
+ if (!sglq)
+ return NULL;
+ adj_xri = sglq->sli4_xritag -
+ phba->sli4_hba.max_cfg_param.xri_base;
+ if (__lpfc_test_rrq_active(phba, ndlp, sglq->sli4_xritag)) {
+ /* This xri has an rrq outstanding for this DID.
+ * put it back in the list and get another xri.
+ */
+ list_add_tail(&sglq->list, lpfc_sgl_list);
+ sglq = NULL;
+ list_remove_head(lpfc_sgl_list, sglq,
+ struct lpfc_sglq, list);
+ if (sglq == start_sglq) {
+ sglq = NULL;
+ break;
+ } else
+ continue;
+ }
+ sglq->ndlp = ndlp;
+ found = 1;
+ phba->sli4_hba.lpfc_sglq_active_list[adj_xri] = sglq;
+ sglq->state = SGL_ALLOCATED;
+ }
return sglq;
}
@@ -598,6 +970,7 @@
&phba->sli4_hba.abts_sgl_list_lock, iflag);
} else {
sglq->state = SGL_FREED;
+ sglq->ndlp = NULL;
list_add(&sglq->list, &phba->sli4_hba.lpfc_sgl_list);
/* Check if TXQ queue needs to be serviced */
@@ -6352,7 +6725,7 @@
return IOCB_BUSY;
}
} else {
- sglq = __lpfc_sli_get_sglq(phba);
+ sglq = __lpfc_sli_get_sglq(phba, piocb);
if (!sglq) {
if (!(flag & SLI_IOCB_RET_IOCB)) {
__lpfc_sli_ringtx_put(phba,
@@ -11570,6 +11943,10 @@
"SID:x%x\n", oxid, sid);
return;
}
+ if (rxid >= phba->sli4_hba.max_cfg_param.xri_base
+ && rxid <= (phba->sli4_hba.max_cfg_param.max_xri
+ + phba->sli4_hba.max_cfg_param.xri_base))
+ lpfc_set_rrq_active(phba, ndlp, rxid, oxid, 0);
/* Allocate buffer for acc iocb */
ctiocb = lpfc_sli_get_iocbq(phba);
@@ -13008,12 +13385,13 @@
while (pring->txq_cnt) {
spin_lock_irqsave(&phba->hbalock, iflags);
- sglq = __lpfc_sli_get_sglq(phba);
+ piocbq = lpfc_sli_ringtx_get(phba, pring);
+ sglq = __lpfc_sli_get_sglq(phba, piocbq);
if (!sglq) {
+ __lpfc_sli_ringtx_put(phba, pring, piocbq);
spin_unlock_irqrestore(&phba->hbalock, iflags);
break;
} else {
- piocbq = lpfc_sli_ringtx_get(phba, pring);
if (!piocbq) {
/* The txq_cnt out of sync. This should
* never happen
diff --git a/drivers/scsi/lpfc/lpfc_sli.h b/drivers/scsi/lpfc/lpfc_sli.h
index cd56d6c..402a073 100644
--- a/drivers/scsi/lpfc/lpfc_sli.h
+++ b/drivers/scsi/lpfc/lpfc_sli.h
@@ -82,6 +82,7 @@
struct lpfc_iocbq *rsp_iocb;
struct lpfcMboxq *mbox;
struct lpfc_nodelist *ndlp;
+ struct lpfc_node_rrq *rrq;
} context_un;
void (*fabric_iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *,
diff --git a/drivers/scsi/lpfc/lpfc_sli4.h b/drivers/scsi/lpfc/lpfc_sli4.h
index bc30fcf..8ced598 100644
--- a/drivers/scsi/lpfc/lpfc_sli4.h
+++ b/drivers/scsi/lpfc/lpfc_sli4.h
@@ -466,6 +466,7 @@
struct list_head clist;
enum lpfc_sge_type buff_type; /* is this a scsi sgl */
enum lpfc_sgl_state state;
+ struct lpfc_nodelist *ndlp; /* ndlp associated with IO */
uint16_t iotag; /* pre-assigned IO tag */
uint16_t sli4_xritag; /* pre-assigned XRI, (OXID) tag. */
struct sli4_sge *sgl; /* pre-assigned SGL */