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[SCSI] lpfc: Fix for "command completion for iotax x?? not found"

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From: James Smart <James.Smart@emulex.com>

There were scenarios where the error handlers could reuse an iotag
value of an active io.  Remove all possibility of this by
pre-assigning iotag resources to command resources.

Signed-off-by: James Smart <James.Smart@emulex.com>

Rejections fixed up and
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
James Bottomley 2005-10-29 10:28:33 -05:00
parent 21568f5387
commit 604a3e3042
9 changed files with 186 additions and 205 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/scsi/lpfc/lpfc_crtn.h
View File

@ -143,6 +143,8 @@ LPFC_MBOXQ_t *lpfc_mbox_get(struct lpfc_hba *);
int lpfc_mem_alloc(struct lpfc_hba *);
void lpfc_mem_free(struct lpfc_hba *);
void lpfc_sli_release_iocbq(struct lpfc_hba * phba, struct lpfc_iocbq * iocb);
uint16_t lpfc_sli_next_iotag(struct lpfc_hba * phba, struct lpfc_iocbq * iocb);
int lpfc_sli_hba_setup(struct lpfc_hba *);
int lpfc_sli_hba_down(struct lpfc_hba *);
int lpfc_sli_issue_mbox(struct lpfc_hba *, LPFC_MBOXQ_t *, uint32_t);

9
drivers/scsi/lpfc/lpfc_ct.c
View File

@ -235,7 +235,6 @@ lpfc_gen_req(struct lpfc_hba *phba, struct lpfc_dmabuf *bmp,
if (geniocb == NULL)
return 1;
memset(geniocb, 0, sizeof (struct lpfc_iocbq));
icmd = &geniocb->iocb;
icmd->un.genreq64.bdl.ulpIoTag32 = 0;
@ -279,7 +278,7 @@ lpfc_gen_req(struct lpfc_hba *phba, struct lpfc_dmabuf *bmp,
geniocb->drvrTimeout = icmd->ulpTimeout + LPFC_DRVR_TIMEOUT;
spin_lock_irq(phba->host->host_lock);
if (lpfc_sli_issue_iocb(phba, pring, geniocb, 0) == IOCB_ERROR) {
list_add_tail(&geniocb->list, lpfc_iocb_list);
lpfc_sli_release_iocbq(phba, geniocb);
spin_unlock_irq(phba->host->host_lock);
return 1;
}
@ -487,7 +486,7 @@ out:
kfree(inp);
kfree(bmp);
spin_lock_irq(phba->host->host_lock);
list_add_tail(&cmdiocb->list, &phba->lpfc_iocb_list);
lpfc_sli_release_iocbq(phba, cmdiocb);
spin_unlock_irq(phba->host->host_lock);
return;
}
@ -526,7 +525,7 @@ lpfc_cmpl_ct_cmd_rft_id(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
kfree(inp);
kfree(bmp);
spin_lock_irq(phba->host->host_lock);
list_add_tail(&cmdiocb->list, &phba->lpfc_iocb_list);
lpfc_sli_release_iocbq(phba, cmdiocb);
spin_unlock_irq(phba->host->host_lock);
return;
}
@ -735,7 +734,7 @@ lpfc_cmpl_ct_cmd_fdmi(struct lpfc_hba * phba,
kfree(inp);
kfree(bmp);
spin_lock_irq(phba->host->host_lock);
list_add_tail(&cmdiocb->list, &phba->lpfc_iocb_list);
lpfc_sli_release_iocbq(phba, cmdiocb);
spin_unlock_irq(phba->host->host_lock);
return;
}

30
drivers/scsi/lpfc/lpfc_els.c
View File

@ -122,7 +122,6 @@ lpfc_prep_els_iocb(struct lpfc_hba * phba,
if (elsiocb == NULL)
return NULL;
memset(elsiocb, 0, sizeof (struct lpfc_iocbq));
icmd = &elsiocb->iocb;
/* fill in BDEs for command */
@ -133,7 +132,9 @@ lpfc_prep_els_iocb(struct lpfc_hba * phba,
if (pcmd)
kfree(pcmd);
list_add_tail(&elsiocb->list, lpfc_iocb_list);
spin_lock_irq(phba->host->host_lock);
lpfc_sli_release_iocbq(phba, elsiocb);
spin_unlock_irq(phba->host->host_lock);
return NULL;
}
@ -150,7 +151,9 @@ lpfc_prep_els_iocb(struct lpfc_hba * phba,
kfree(prsp);
lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys);
kfree(pcmd);
list_add_tail(&elsiocb->list, lpfc_iocb_list);
spin_lock_irq(phba->host->host_lock);
lpfc_sli_release_iocbq(phba, elsiocb);
spin_unlock_irq(phba->host->host_lock);
return NULL;
}
INIT_LIST_HEAD(&prsp->list);
@ -164,7 +167,9 @@ lpfc_prep_els_iocb(struct lpfc_hba * phba,
pbuflist->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
&pbuflist->phys);
if (pbuflist == 0 || pbuflist->virt == 0) {
list_add_tail(&elsiocb->list, lpfc_iocb_list);
spin_lock_irq(phba->host->host_lock);
lpfc_sli_release_iocbq(phba, elsiocb);
spin_unlock_irq(phba->host->host_lock);
lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys);
lpfc_mbuf_free(phba, prsp->virt, prsp->phys);
kfree(pcmd);
@ -596,10 +601,8 @@ lpfc_els_abort_flogi(struct lpfc_hba * phba)
spin_unlock_irq(phba->host->host_lock);
(iocb->iocb_cmpl) (phba, iocb, iocb);
spin_lock_irq(phba->host->host_lock);
} else {
list_add_tail(&iocb->list,
&phba->lpfc_iocb_list);
}
} else
lpfc_sli_release_iocbq(phba, iocb);
}
}
}
@ -1713,7 +1716,7 @@ lpfc_els_free_iocb(struct lpfc_hba * phba, struct lpfc_iocbq * elsiocb)
kfree(buf_ptr);
}
spin_lock_irq(phba->host->host_lock);
list_add_tail(&elsiocb->list, &phba->lpfc_iocb_list);
lpfc_sli_release_iocbq(phba, elsiocb);
spin_unlock_irq(phba->host->host_lock);
return 0;
}
@ -2929,9 +2932,8 @@ lpfc_els_timeout_handler(struct lpfc_hba *phba)
spin_unlock_irq(phba->host->host_lock);
(piocb->iocb_cmpl) (phba, piocb, piocb);
spin_lock_irq(phba->host->host_lock);
} else {
list_add_tail(&piocb->list, &phba->lpfc_iocb_list);
}
} else
lpfc_sli_release_iocbq(phba, piocb);
}
if (phba->sli.ring[LPFC_ELS_RING].txcmplq_cnt) {
phba->els_tmofunc.expires = jiffies + HZ * timeout;
@ -2996,7 +2998,7 @@ lpfc_els_flush_cmd(struct lpfc_hba * phba)
spin_lock_irq(phba->host->host_lock);
}
else
list_add_tail(&piocb->list, &phba->lpfc_iocb_list);
lpfc_sli_release_iocbq(phba, piocb);
}
list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
@ -3033,7 +3035,7 @@ lpfc_els_flush_cmd(struct lpfc_hba * phba)
spin_lock_irq(phba->host->host_lock);
}
else
list_add_tail(&piocb->list, &phba->lpfc_iocb_list);
lpfc_sli_release_iocbq(phba, piocb);
}
spin_unlock_irq(phba->host->host_lock);
return;

7
drivers/scsi/lpfc/lpfc_hbadisc.c
View File

@ -1445,10 +1445,9 @@ lpfc_no_rpi(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp)
iocb, iocb);
spin_lock_irq(phba->host->
host_lock);
} else {
list_add_tail(&iocb->list,
&phba->lpfc_iocb_list);
}
} else
lpfc_sli_release_iocbq(phba,
iocb);
}
}
spin_unlock_irq(phba->host->host_lock);

17
drivers/scsi/lpfc/lpfc_init.c
View File

@ -886,7 +886,6 @@ lpfc_post_buffer(struct lpfc_hba * phba, struct lpfc_sli_ring * pring, int cnt,
pring->missbufcnt = cnt;
return cnt;
}
memset(iocb, 0, sizeof (struct lpfc_iocbq));
icmd = &iocb->iocb;
/* 2 buffers can be posted per command */
@ -899,7 +898,7 @@ lpfc_post_buffer(struct lpfc_hba * phba, struct lpfc_sli_ring * pring, int cnt,
if (mp1)
kfree(mp1);
spin_lock_irq(phba->host->host_lock);
list_add_tail(&iocb->list, lpfc_iocb_list);
lpfc_sli_release_iocbq(phba, iocb);
spin_unlock_irq(phba->host->host_lock);
pring->missbufcnt = cnt;
return cnt;
@ -918,7 +917,7 @@ lpfc_post_buffer(struct lpfc_hba * phba, struct lpfc_sli_ring * pring, int cnt,
lpfc_mbuf_free(phba, mp1->virt, mp1->phys);
kfree(mp1);
spin_lock_irq(phba->host->host_lock);
list_add_tail(&iocb->list, lpfc_iocb_list);
lpfc_sli_release_iocbq(phba, iocb);
spin_unlock_irq(phba->host->host_lock);
pring->missbufcnt = cnt;
return cnt;
@ -955,7 +954,7 @@ lpfc_post_buffer(struct lpfc_hba * phba, struct lpfc_sli_ring * pring, int cnt,
kfree(mp2);
cnt++;
}
list_add_tail(&iocb->list, lpfc_iocb_list);
lpfc_sli_release_iocbq(phba, iocb);
pring->missbufcnt = cnt;
spin_unlock_irq(phba->host->host_lock);
return cnt;
@ -1328,6 +1327,7 @@ lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
unsigned long bar0map_len, bar2map_len;
int error = -ENODEV, retval;
int i;
uint16_t iotag;
if (pci_enable_device(pdev))
goto out;
@ -1452,6 +1452,15 @@ lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
}
memset(iocbq_entry, 0, sizeof(struct lpfc_iocbq));
iotag = lpfc_sli_next_iotag(phba, iocbq_entry);
if (iotag == 0) {
kfree (iocbq_entry);
printk(KERN_ERR "%s: failed to allocate IOTAG. "
"Unloading driver.\n",
__FUNCTION__);
error = -ENOMEM;
goto out_free_iocbq;
}
spin_lock_irq(phba->host->host_lock);
list_add(&iocbq_entry->list, &phba->lpfc_iocb_list);
phba->total_iocbq_bufs++;

12
drivers/scsi/lpfc/lpfc_nportdisc.c
View File

@ -187,10 +187,8 @@ lpfc_els_abort(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
spin_unlock_irq(phba->host->host_lock);
(iocb->iocb_cmpl) (phba, iocb, iocb);
spin_lock_irq(phba->host->host_lock);
} else {
list_add_tail(&iocb->list,
&phba->lpfc_iocb_list);
}
} else
lpfc_sli_release_iocbq(phba, iocb);
break;
}
}
@ -232,10 +230,8 @@ lpfc_els_abort(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
spin_unlock_irq(phba->host->host_lock);
(iocb->iocb_cmpl) (phba, iocb, iocb);
spin_lock_irq(phba->host->host_lock);
} else {
list_add_tail(&iocb->list,
&phba->lpfc_iocb_list);
}
} else
lpfc_sli_release_iocbq(phba, iocb);
break;
}
}

27
drivers/scsi/lpfc/lpfc_scsi.c
View File

@ -56,6 +56,7 @@ lpfc_get_scsi_buf(struct lpfc_hba * phba)
struct ulp_bde64 *bpl;
IOCB_t *iocb;
dma_addr_t pdma_phys;
uint16_t iotag;
psb = kmalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL);
if (!psb)
@ -79,6 +80,15 @@ lpfc_get_scsi_buf(struct lpfc_hba * phba)
/* Initialize virtual ptrs to dma_buf region. */
memset(psb->data, 0, phba->cfg_sg_dma_buf_size);
/* Allocate iotag for psb->cur_iocbq. */
iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq);
if (iotag == 0) {
pci_pool_free(phba->lpfc_scsi_dma_buf_pool,
psb->data, psb->dma_handle);
kfree (psb);
return NULL;
}
psb->fcp_cmnd = psb->data;
psb->fcp_rsp = psb->data + sizeof(struct fcp_cmnd);
psb->fcp_bpl = psb->data + sizeof(struct fcp_cmnd) +
@ -626,7 +636,6 @@ lpfc_scsi_tgt_reset(struct lpfc_scsi_buf * lpfc_cmd, struct lpfc_hba * phba)
list_remove_head(lpfc_iocb_list, iocbqrsp, struct lpfc_iocbq, list);
if (!iocbqrsp)
return FAILED;
memset(iocbqrsp, 0, sizeof (struct lpfc_iocbq));
iocbq->iocb_flag |= LPFC_IO_POLL;
ret = lpfc_sli_issue_iocb_wait_high_priority(phba,
@ -655,8 +664,7 @@ lpfc_scsi_tgt_reset(struct lpfc_scsi_buf * lpfc_cmd, struct lpfc_hba * phba)
lpfc_cmd->pCmd->device->id,
lpfc_cmd->pCmd->device->lun, 0, LPFC_CTX_TGT);
/* Return response IOCB to free list. */
list_add_tail(&iocbqrsp->list, lpfc_iocb_list);
lpfc_sli_release_iocbq(phba, iocbqrsp);
return ret;
}
@ -818,9 +826,8 @@ __lpfc_abort_handler(struct scsi_cmnd *cmnd)
list_del_init(&iocb->list);
pring->txq_cnt--;
if (!iocb->iocb_cmpl) {
list_add_tail(&iocb->list, lpfc_iocb_list);
}
if (!iocb->iocb_cmpl)
lpfc_sli_release_iocbq(phba, iocb);
else {
cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
@ -834,8 +841,6 @@ __lpfc_abort_handler(struct scsi_cmnd *cmnd)
if (abtsiocb == NULL)
return FAILED;
memset(abtsiocb, 0, sizeof (struct lpfc_iocbq));
/*
* The scsi command was not in the txq. Check the txcmplq and if it is
* found, send an abort to the FW.
@ -861,7 +866,7 @@ __lpfc_abort_handler(struct scsi_cmnd *cmnd)
abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl;
if (lpfc_sli_issue_iocb(phba, pring, abtsiocb, 0) ==
IOCB_ERROR) {
list_add_tail(&abtsiocb->list, lpfc_iocb_list);
lpfc_sli_release_iocbq(phba, abtsiocb);
ret = IOCB_ERROR;
break;
}
@ -964,8 +969,6 @@ __lpfc_reset_lun_handler(struct scsi_cmnd *cmnd)
if (iocbqrsp == NULL)
goto out_free_scsi_buf;
memset(iocbqrsp, 0, sizeof (struct lpfc_iocbq));
iocbq->iocb_flag |= LPFC_IO_POLL;
iocbq->iocb_cmpl = lpfc_sli_wake_iocb_high_priority;
@ -1011,7 +1014,7 @@ __lpfc_reset_lun_handler(struct scsi_cmnd *cmnd)
phba->brd_no, cnt);
}
list_add_tail(&iocbqrsp->list, lpfc_iocb_list);
lpfc_sli_release_iocbq(phba, iocbqrsp);
out_free_scsi_buf:
lpfc_printf_log(phba, KERN_ERR, LOG_FCP,

279
drivers/scsi/lpfc/lpfc_sli.c
View File

@ -65,6 +65,18 @@ typedef enum _lpfc_iocb_type {
LPFC_ABORT_IOCB
} lpfc_iocb_type;
void
lpfc_sli_release_iocbq(struct lpfc_hba * phba, struct lpfc_iocbq * iocbq)
{
size_t start_clean = (size_t)(&((struct lpfc_iocbq *)NULL)->iocb);
/*
* Clean all volatile data fields, preserve iotag and node struct.
*/
memset((char*)iocbq + start_clean, 0, sizeof(*iocbq) - start_clean);
list_add_tail(&iocbq->list, &phba->lpfc_iocb_list);
}
/*
* Translate the iocb command to an iocb command type used to decide the final
* disposition of each completed IOCB.
@ -265,41 +277,69 @@ lpfc_sli_next_iocb_slot (struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
return iocb;
}
static uint32_t
lpfc_sli_next_iotag(struct lpfc_hba * phba, struct lpfc_sli_ring * pring)
uint16_t
lpfc_sli_next_iotag(struct lpfc_hba * phba, struct lpfc_iocbq * iocbq)
{
uint32_t search_start;
struct lpfc_iocbq ** new_arr;
struct lpfc_iocbq ** old_arr;
size_t new_len;
struct lpfc_sli *psli = &phba->sli;
uint16_t iotag;
if (pring->fast_lookup == NULL) {
pring->iotag_ctr++;
if (pring->iotag_ctr >= pring->iotag_max)
pring->iotag_ctr = 1;
return pring->iotag_ctr;
spin_lock_irq(phba->host->host_lock);
iotag = psli->last_iotag;
if(++iotag < psli->iocbq_lookup_len) {
psli->last_iotag = iotag;
psli->iocbq_lookup[iotag] = iocbq;
spin_unlock_irq(phba->host->host_lock);
iocbq->iotag = iotag;
return iotag;
}
else if (psli->iocbq_lookup_len < (0xffff
- LPFC_IOCBQ_LOOKUP_INCREMENT)) {
new_len = psli->iocbq_lookup_len + LPFC_IOCBQ_LOOKUP_INCREMENT;
spin_unlock_irq(phba->host->host_lock);
new_arr = kmalloc(new_len * sizeof (struct lpfc_iocbq *),
GFP_KERNEL);
if (new_arr) {
memset((char *)new_arr, 0,
new_len * sizeof (struct lpfc_iocbq *));
spin_lock_irq(phba->host->host_lock);
old_arr = psli->iocbq_lookup;
if (new_len <= psli->iocbq_lookup_len) {
/* highly unprobable case */
kfree(new_arr);
iotag = psli->last_iotag;
if(++iotag < psli->iocbq_lookup_len) {
psli->last_iotag = iotag;
psli->iocbq_lookup[iotag] = iocbq;
spin_unlock_irq(phba->host->host_lock);
iocbq->iotag = iotag;
return iotag;
}
spin_unlock_irq(phba->host->host_lock);
return 0;
}
if (psli->iocbq_lookup)
memcpy(new_arr, old_arr,
((psli->last_iotag + 1) *
sizeof (struct lpfc_iocbq *)));
psli->iocbq_lookup = new_arr;
psli->iocbq_lookup_len = new_len;
psli->last_iotag = iotag;
psli->iocbq_lookup[iotag] = iocbq;
spin_unlock_irq(phba->host->host_lock);
iocbq->iotag = iotag;
kfree(old_arr);
return iotag;
}
}
search_start = pring->iotag_ctr;
lpfc_printf_log(phba, KERN_ERR,LOG_SLI,
"%d:0318 Failed to allocate IOTAG.last IOTAG is %d\n",
phba->brd_no, psli->last_iotag);
do {
pring->iotag_ctr++;
if (pring->iotag_ctr >= pring->fast_iotag)
pring->iotag_ctr = 1;
if (*(pring->fast_lookup + pring->iotag_ctr) == NULL)
return pring->iotag_ctr;
} while (pring->iotag_ctr != search_start);
/*
* Outstanding I/O count for ring <ringno> is at max <fast_iotag>
*/
lpfc_printf_log(phba,
KERN_ERR,
LOG_SLI,
"%d:0318 Outstanding I/O count for ring %d is at max x%x\n",
phba->brd_no,
pring->ringno,
pring->fast_iotag);
return (0);
return 0;
}
static void
@ -307,10 +347,9 @@ lpfc_sli_submit_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
IOCB_t *iocb, struct lpfc_iocbq *nextiocb)
{
/*
* Allocate and set up an iotag
* Set up an iotag
*/
nextiocb->iocb.ulpIoTag =
lpfc_sli_next_iotag(phba, &phba->sli.ring[phba->sli.fcp_ring]);
nextiocb->iocb.ulpIoTag = (nextiocb->iocb_cmpl) ? nextiocb->iotag : 0;
/*
* Issue iocb command to adapter
@ -326,9 +365,8 @@ lpfc_sli_submit_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
*/
if (nextiocb->iocb_cmpl)
lpfc_sli_ringtxcmpl_put(phba, pring, nextiocb);
else {
list_add_tail(&nextiocb->list, &phba->lpfc_iocb_list);
}
else
lpfc_sli_release_iocbq(phba, nextiocb);
/*
* Let the HBA know what IOCB slot will be the next one the
@ -752,80 +790,28 @@ lpfc_sli_process_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
}
static struct lpfc_iocbq *
lpfc_sli_txcmpl_ring_search_slow(struct lpfc_sli_ring * pring,
struct lpfc_iocbq * prspiocb)
lpfc_sli_iocbq_lookup(struct lpfc_hba * phba,
struct lpfc_sli_ring * pring,
struct lpfc_iocbq * prspiocb)
{
IOCB_t *icmd = NULL;
IOCB_t *irsp = NULL;
struct lpfc_iocbq *cmd_iocb;
struct lpfc_iocbq *iocb, *next_iocb;
uint16_t iotag;
irsp = &prspiocb->iocb;
iotag = irsp->ulpIoTag;
cmd_iocb = NULL;
/* Search through txcmpl from the begining */
list_for_each_entry_safe(iocb, next_iocb, &(pring->txcmplq), list) {
icmd = &iocb->iocb;
if (iotag == icmd->ulpIoTag) {
/* Found a match. */
cmd_iocb = iocb;
list_del(&iocb->list);
pring->txcmplq_cnt--;
break;
}
}
return (cmd_iocb);
}
static struct lpfc_iocbq *
lpfc_sli_txcmpl_ring_iotag_lookup(struct lpfc_hba * phba,
struct lpfc_sli_ring * pring,
struct lpfc_iocbq * prspiocb)
{
IOCB_t *irsp = NULL;
struct lpfc_iocbq *cmd_iocb = NULL;
uint16_t iotag;
if (unlikely(pring->fast_lookup == NULL))
return NULL;
iotag = prspiocb->iocb.ulpIoTag;
/* Use fast lookup based on iotag for completion */
irsp = &prspiocb->iocb;
iotag = irsp->ulpIoTag;
if (iotag < pring->fast_iotag) {
cmd_iocb = *(pring->fast_lookup + iotag);
*(pring->fast_lookup + iotag) = NULL;
if (cmd_iocb) {
list_del(&cmd_iocb->list);
pring->txcmplq_cnt--;
return cmd_iocb;
} else {
/*
* This is clearly an error. A ring that uses iotags
* should never have a interrupt for a completion that
* is not on the ring. Return NULL and log a error.
*/
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"%d:0327 Rsp ring %d error - command "
"completion for iotag x%x not found\n",
phba->brd_no, pring->ringno, iotag);
return NULL;
}
if (iotag != 0 && iotag <= phba->sli.last_iotag) {
cmd_iocb = phba->sli.iocbq_lookup[iotag];
list_del(&cmd_iocb->list);
pring->txcmplq_cnt--;
return cmd_iocb;
}
/*
* Rsp ring <ringno> get: iotag <iotag> greater then
* configured max <fast_iotag> wd0 <irsp>. This is an
* error. Just return NULL.
*/
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"%d:0317 Rsp ring %d get: iotag x%x greater then "
"configured max x%x wd0 x%x\n",
phba->brd_no, pring->ringno, iotag, pring->fast_iotag,
*(((uint32_t *) irsp) + 7));
"%d:0317 iotag x%x is out off "
"range: max iotag x%x wd0 x%x\n",
phba->brd_no, iotag,
phba->sli.last_iotag,
*(((uint32_t *) &prspiocb->iocb) + 7));
return NULL;
}
@ -839,7 +825,7 @@ lpfc_sli_process_sol_iocb(struct lpfc_hba * phba, struct lpfc_sli_ring * pring,
/* Based on the iotag field, get the cmd IOCB from the txcmplq */
spin_lock_irqsave(phba->host->host_lock, iflag);
cmdiocbp = lpfc_sli_txcmpl_ring_search_slow(pring, saveq);
cmdiocbp = lpfc_sli_iocbq_lookup(phba, pring, saveq);
if (cmdiocbp) {
if (cmdiocbp->iocb_cmpl) {
/*
@ -861,9 +847,8 @@ lpfc_sli_process_sol_iocb(struct lpfc_hba * phba, struct lpfc_sli_ring * pring,
(cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq);
spin_lock_irqsave(phba->host->host_lock, iflag);
}
} else {
list_add_tail(&cmdiocbp->list, &phba->lpfc_iocb_list);
}
} else
lpfc_sli_release_iocbq(phba, cmdiocbp);
} else {
/*
* Unknown initiating command based on the response iotag.
@ -990,9 +975,8 @@ lpfc_sli_handle_fast_ring_event(struct lpfc_hba * phba,
break;
}
cmdiocbq = lpfc_sli_txcmpl_ring_iotag_lookup(phba,
pring,
&rspiocbq);
cmdiocbq = lpfc_sli_iocbq_lookup(phba, pring,
&rspiocbq);
if ((cmdiocbq) && (cmdiocbq->iocb_cmpl)) {
spin_unlock_irqrestore(
phba->host->host_lock, iflag);
@ -1213,8 +1197,8 @@ lpfc_sli_handle_slow_ring_event(struct lpfc_hba * phba,
} else if (type == LPFC_ABORT_IOCB) {
if ((irsp->ulpCommand != CMD_XRI_ABORTED_CX) &&
((cmdiocbp =
lpfc_sli_txcmpl_ring_search_slow(pring,
saveq)))) {
lpfc_sli_iocbq_lookup(phba, pring,
saveq)))) {
/* Call the specified completion
routine */
if (cmdiocbp->iocb_cmpl) {
@ -1226,10 +1210,9 @@ lpfc_sli_handle_slow_ring_event(struct lpfc_hba * phba,
spin_lock_irqsave(
phba->host->host_lock,
iflag);
} else {
list_add_tail(&cmdiocbp->list,
lpfc_iocb_list);
}
} else
lpfc_sli_release_iocbq(phba,
cmdiocbp);
}
} else if (type == LPFC_UNKNOWN_IOCB) {
if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
@ -1264,12 +1247,12 @@ lpfc_sli_handle_slow_ring_event(struct lpfc_hba * phba,
next_iocb,
&saveq->list,
list) {
list_add_tail(&rspiocbp->list,
lpfc_iocb_list);
lpfc_sli_release_iocbq(phba,
rspiocbp);
}
}
list_add_tail(&saveq->list, lpfc_iocb_list);
lpfc_sli_release_iocbq(phba, saveq);
}
}
@ -1314,7 +1297,6 @@ lpfc_sli_abort_iocb_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
struct lpfc_iocbq *iocb, *next_iocb;
IOCB_t *icmd = NULL, *cmd = NULL;
int errcnt;
uint16_t iotag;
errcnt = 0;
@ -1331,9 +1313,8 @@ lpfc_sli_abort_iocb_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
spin_unlock_irq(phba->host->host_lock);
(iocb->iocb_cmpl) (phba, iocb, iocb);
spin_lock_irq(phba->host->host_lock);
} else {
list_add_tail(&iocb->list, &phba->lpfc_iocb_list);
}
} else
lpfc_sli_release_iocbq(phba, iocb);
}
pring->txq_cnt = 0;
INIT_LIST_HEAD(&(pring->txq));
@ -1343,13 +1324,8 @@ lpfc_sli_abort_iocb_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
cmd = &iocb->iocb;
/*
* Imediate abort of IOCB, clear fast_lookup entry,
* if any, deque and call compl
* Imediate abort of IOCB, deque and call compl
*/
iotag = cmd->ulpIoTag;
if (iotag && pring->fast_lookup &&
(iotag < pring->fast_iotag))
pring->fast_lookup[iotag] = NULL;
list_del_init(&iocb->list);
pring->txcmplq_cnt--;
@ -1360,9 +1336,8 @@ lpfc_sli_abort_iocb_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
spin_unlock_irq(phba->host->host_lock);
(iocb->iocb_cmpl) (phba, iocb, iocb);
spin_lock_irq(phba->host->host_lock);
} else {
list_add_tail(&iocb->list, &phba->lpfc_iocb_list);
}
} else
lpfc_sli_release_iocbq(phba, iocb);
}
INIT_LIST_HEAD(&pring->txcmplq);
@ -2147,6 +2122,10 @@ lpfc_sli_setup(struct lpfc_hba *phba)
psli->next_ring = LPFC_FCP_NEXT_RING;
psli->ip_ring = LPFC_IP_RING;
psli->iocbq_lookup = NULL;
psli->iocbq_lookup_len = 0;
psli->last_iotag = 0;
for (i = 0; i < psli->num_rings; i++) {
pring = &psli->ring[i];
switch (i) {
@ -2222,7 +2201,7 @@ lpfc_sli_queue_setup(struct lpfc_hba * phba)
{
struct lpfc_sli *psli;
struct lpfc_sli_ring *pring;
int i, cnt;
int i;
psli = &phba->sli;
spin_lock_irq(phba->host->host_lock);
@ -2238,19 +2217,6 @@ lpfc_sli_queue_setup(struct lpfc_hba * phba)
INIT_LIST_HEAD(&pring->txcmplq);
INIT_LIST_HEAD(&pring->iocb_continueq);
INIT_LIST_HEAD(&pring->postbufq);
cnt = pring->fast_iotag;
spin_unlock_irq(phba->host->host_lock);
if (cnt) {
pring->fast_lookup =
kmalloc(cnt * sizeof (struct lpfc_iocbq *),
GFP_KERNEL);
if (pring->fast_lookup == 0) {
return (0);
}
memset((char *)pring->fast_lookup, 0,
cnt * sizeof (struct lpfc_iocbq *));
}
spin_lock_irq(phba->host->host_lock);
}
spin_unlock_irq(phba->host->host_lock);
return (1);
@ -2292,10 +2258,8 @@ lpfc_sli_hba_down(struct lpfc_hba * phba)
flags);
(iocb->iocb_cmpl) (phba, iocb, iocb);
spin_lock_irqsave(phba->host->host_lock, flags);
} else {
list_add_tail(&iocb->list,
&phba->lpfc_iocb_list);
}
} else
lpfc_sli_release_iocbq(phba, iocb);
}
INIT_LIST_HEAD(&(pring->txq));
@ -2436,7 +2400,7 @@ lpfc_sli_abort_elsreq_cmpl(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
kfree(buf_ptr);
}
list_add_tail(&cmdiocb->list, &phba->lpfc_iocb_list);
lpfc_sli_release_iocbq(phba, cmdiocb);
return;
}
@ -2454,7 +2418,6 @@ lpfc_sli_issue_abort_iotag32(struct lpfc_hba * phba,
list_remove_head(lpfc_iocb_list, abtsiocbp, struct lpfc_iocbq, list);
if (abtsiocbp == NULL)
return 0;
memset(abtsiocbp, 0, sizeof (struct lpfc_iocbq));
iabt = &abtsiocbp->iocb;
icmd = &cmdiocb->iocb;
@ -2473,7 +2436,7 @@ lpfc_sli_issue_abort_iotag32(struct lpfc_hba * phba,
abtsiocbp->iocb_cmpl = lpfc_sli_abort_elsreq_cmpl;
break;
default:
list_add_tail(&abtsiocbp->list, lpfc_iocb_list);
lpfc_sli_release_iocbq(phba, abtsiocbp);
return 0;
}
@ -2485,7 +2448,7 @@ lpfc_sli_issue_abort_iotag32(struct lpfc_hba * phba,
iabt->ulpCommand = CMD_ABORT_MXRI64_CN;
if (lpfc_sli_issue_iocb(phba, pring, abtsiocbp, 0) == IOCB_ERROR) {
list_add_tail(&abtsiocbp->list, lpfc_iocb_list);
lpfc_sli_release_iocbq(phba, abtsiocbp);
return 0;
}
@ -2563,7 +2526,7 @@ lpfc_sli_abort_fcp_cmpl(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
struct lpfc_iocbq * rspiocb)
{
spin_lock_irq(phba->host->host_lock);
list_add_tail(&cmdiocb->list, &phba->lpfc_iocb_list);
lpfc_sli_release_iocbq(phba, cmdiocb);
spin_unlock_irq(phba->host->host_lock);
return;
}
@ -2604,7 +2567,6 @@ lpfc_sli_abort_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
errcnt++;
continue;
}
memset(abtsiocb, 0, sizeof (struct lpfc_iocbq));
abtsiocb->iocb.un.acxri.abortType = ABORT_TYPE_ABTS;
abtsiocb->iocb.un.acxri.abortContextTag = cmd->ulpContext;
@ -2621,7 +2583,7 @@ lpfc_sli_abort_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl;
ret_val = lpfc_sli_issue_iocb(phba, pring, abtsiocb, 0);
if (ret_val == IOCB_ERROR) {
list_add_tail(&abtsiocb->list, lpfc_iocb_list);
lpfc_sli_release_iocbq(phba, abtsiocb);
errcnt++;
continue;
}
@ -2635,8 +2597,9 @@ lpfc_sli_wake_iocb_high_priority(struct lpfc_hba * phba,
struct lpfc_iocbq * queue1,
struct lpfc_iocbq * queue2)
{
if (queue1->context2 && queue2)
memcpy(queue1->context2, queue2, sizeof (struct lpfc_iocbq));
struct lpfc_iocbq *save_iocbq = queue1->context2;
if (save_iocbq && queue2)
memcpy(&save_iocbq->iocb, &queue2->iocb, sizeof(queue2->iocb));
/* The waiter is looking for LPFC_IO_HIPRI bit to be set
as a signal to wake up */

8
drivers/scsi/lpfc/lpfc_sli.h
View File

@ -33,6 +33,9 @@ typedef enum _lpfc_ctx_cmd {
struct lpfc_iocbq {
/* lpfc_iocbqs are used in double linked lists */
struct list_head list;
uint16_t iotag; /* pre-assigned IO tag */
uint16_t rsvd1;
IOCB_t iocb; /* IOCB cmd */
uint8_t retry; /* retry counter for IOCB cmd - if needed */
uint8_t iocb_flag;
@ -200,6 +203,11 @@ struct lpfc_sli {
cmd */
uint32_t *MBhostaddr; /* virtual address for mbox cmds */
#define LPFC_IOCBQ_LOOKUP_INCREMENT 1024
struct lpfc_iocbq ** iocbq_lookup; /* array to lookup IOCB by IOTAG */
size_t iocbq_lookup_len; /* current lengs of the array */
uint16_t last_iotag; /* last allocated IOTAG */
};
/* Given a pointer to the start of the ring, and the slot number of