Fixed locking for scsi task management commands.
Signed-off-by: James Smart <james.smart@xxxxxxxxxx>
---
lpfc_crtn.h | 3 +
lpfc_scsi.c | 25 ++++++++++--
lpfc_sli.c | 118 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 141 insertions(+), 5 deletions(-)
diff -upNr a/drivers/scsi/lpfc/lpfc_crtn.h b/drivers/scsi/lpfc/lpfc_crtn.h
--- a/drivers/scsi/lpfc/lpfc_crtn.h 2014-04-03 10:24:24.211308703 -0400
+++ b/drivers/scsi/lpfc/lpfc_crtn.h 2014-04-03 10:24:31.784309084 -0400
@@ -311,6 +311,9 @@ int lpfc_sli_issue_abort_iotag(struct lp
int lpfc_sli_sum_iocb(struct lpfc_vport *, uint16_t, uint64_t, lpfc_ctx_cmd);
int lpfc_sli_abort_iocb(struct lpfc_vport *, struct lpfc_sli_ring *, uint16_t,
uint64_t, lpfc_ctx_cmd);
+int
+lpfc_sli_abort_taskmgmt(struct lpfc_vport *, struct lpfc_sli_ring *,
+ uint16_t, uint64_t, lpfc_ctx_cmd);
void lpfc_mbox_timeout(unsigned long);
void lpfc_mbox_timeout_handler(struct lpfc_hba *);
diff -upNr a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c
--- a/drivers/scsi/lpfc/lpfc_scsi.c 2014-04-03 10:24:27.569308872 -0400
+++ b/drivers/scsi/lpfc/lpfc_scsi.c 2014-04-03 10:24:31.787309084 -0400
@@ -4783,7 +4783,9 @@ lpfc_abort_handler(struct scsi_cmnd *cmn
struct lpfc_scsi_buf *lpfc_cmd;
IOCB_t *cmd, *icmd;
int ret = SUCCESS, status = 0;
- unsigned long flags;
+ struct lpfc_sli_ring *pring_s4;
+ int ring_number, ret_val;
+ unsigned long flags, iflags;
DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq);
status = fc_block_scsi_eh(cmnd);
@@ -4880,11 +4882,23 @@ lpfc_abort_handler(struct scsi_cmnd *cmn
abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl;
abtsiocb->vport = vport;
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ ring_number = MAX_SLI3_CONFIGURED_RINGS + iocb->fcp_wqidx;
+ pring_s4 = &phba->sli.ring[ring_number];
+ /* Note: both hbalock and ring_lock must be set here */
+ spin_lock_irqsave(&pring_s4->ring_lock, iflags);
+ ret_val = __lpfc_sli_issue_iocb(phba, pring_s4->ringno,
+ abtsiocb, 0);
+ spin_unlock_irqrestore(&pring_s4->ring_lock, iflags);
+ } else {
+ ret_val = __lpfc_sli_issue_iocb(phba, LPFC_FCP_RING,
+ abtsiocb, 0);
+ }
/* no longer need the lock after this point */
spin_unlock_irqrestore(&phba->hbalock, flags);
- if (lpfc_sli_issue_iocb(phba, LPFC_FCP_RING, abtsiocb, 0) ==
- IOCB_ERROR) {
+
+ if (ret_val == IOCB_ERROR) {
lpfc_sli_release_iocbq(phba, abtsiocb);
ret = FAILED;
goto out;
@@ -5185,8 +5199,9 @@ lpfc_reset_flush_io_context(struct lpfc_
cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context);
if (cnt)
- lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
- tgt_id, lun_id, context);
+ lpfc_sli_abort_taskmgmt(vport,
+ &phba->sli.ring[phba->sli.fcp_ring],
+ tgt_id, lun_id, context);
later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies;
while (time_after(later, jiffies) && cnt) {
schedule_timeout_uninterruptible(msecs_to_jiffies(20));
diff -upNr a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
--- a/drivers/scsi/lpfc/lpfc_sli.c 2014-04-03 10:24:27.586308873 -0400
+++ b/drivers/scsi/lpfc/lpfc_sli.c 2014-04-03 10:24:31.802309085 -0400
@@ -10097,6 +10097,124 @@ lpfc_sli_abort_iocb(struct lpfc_vport *v
}
/**
+ * lpfc_sli_abort_taskmgmt - issue abort for all commands on a host/target/LUN
+ * @vport: Pointer to virtual port.
+ * @pring: Pointer to driver SLI ring object.
+ * @tgt_id: SCSI ID of the target.
+ * @lun_id: LUN ID of the scsi device.
+ * @taskmgmt_cmd: LPFC_CTX_LUN/LPFC_CTX_TGT/LPFC_CTX_HOST.
+ *
+ * This function sends an abort command for every SCSI command
+ * associated with the given virtual port pending on the ring
+ * filtered by lpfc_sli_validate_fcp_iocb function.
+ * When taskmgmt_cmd == LPFC_CTX_LUN, the function sends abort only to the
+ * FCP iocbs associated with lun specified by tgt_id and lun_id
+ * parameters
+ * When taskmgmt_cmd == LPFC_CTX_TGT, the function sends abort only to the
+ * FCP iocbs associated with SCSI target specified by tgt_id parameter.
+ * When taskmgmt_cmd == LPFC_CTX_HOST, the function sends abort to all
+ * FCP iocbs associated with virtual port.
+ * This function returns number of iocbs it aborted .
+ * This function is called with no locks held right after a taskmgmt
+ * command is sent.
+ **/
+int
+lpfc_sli_abort_taskmgmt(struct lpfc_vport *vport, struct lpfc_sli_ring *pring,
+ uint16_t tgt_id, uint64_t lun_id, lpfc_ctx_cmd cmd)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_iocbq *abtsiocbq;
+ struct lpfc_iocbq *iocbq;
+ IOCB_t *icmd;
+ int sum, i, ret_val;
+ unsigned long iflags;
+ struct lpfc_sli_ring *pring_s4;
+ uint32_t ring_number;
+
+ spin_lock_irq(&phba->hbalock);
+
+ /* all I/Os are in process of being flushed */
+ if (phba->hba_flag & HBA_FCP_IOQ_FLUSH) {
+ spin_unlock_irq(&phba->hbalock);
+ return 0;
+ }
+ sum = 0;
+
+ for (i = 1; i <= phba->sli.last_iotag; i++) {
+ iocbq = phba->sli.iocbq_lookup[i];
+
+ if (lpfc_sli_validate_fcp_iocb(iocbq, vport, tgt_id, lun_id,
+ cmd) != 0)
+ continue;
+
+ /*
+ * If the iocbq is already being aborted, don't take a second
+ * action, but do count it.
+ */
+ if (iocbq->iocb_flag & LPFC_DRIVER_ABORTED)
+ continue;
+
+ /* issue ABTS for this IOCB based on iotag */
+ abtsiocbq = __lpfc_sli_get_iocbq(phba);
+ if (abtsiocbq == NULL)
+ continue;
+
+ icmd = &iocbq->iocb;
+ abtsiocbq->iocb.un.acxri.abortType = ABORT_TYPE_ABTS;
+ abtsiocbq->iocb.un.acxri.abortContextTag = icmd->ulpContext;
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ abtsiocbq->iocb.un.acxri.abortIoTag =
+ iocbq->sli4_xritag;
+ else
+ abtsiocbq->iocb.un.acxri.abortIoTag = icmd->ulpIoTag;
+ abtsiocbq->iocb.ulpLe = 1;
+ abtsiocbq->iocb.ulpClass = icmd->ulpClass;
+ abtsiocbq->vport = vport;
+
+ /* ABTS WQE must go to the same WQ as the WQE to be aborted */
+ abtsiocbq->fcp_wqidx = iocbq->fcp_wqidx;
+ if (iocbq->iocb_flag & LPFC_IO_FCP)
+ abtsiocbq->iocb_flag |= LPFC_USE_FCPWQIDX;
+
+ if (lpfc_is_link_up(phba))
+ abtsiocbq->iocb.ulpCommand = CMD_ABORT_XRI_CN;
+ else
+ abtsiocbq->iocb.ulpCommand = CMD_CLOSE_XRI_CN;
+
+ /* Setup callback routine and issue the command. */
+ abtsiocbq->iocb_cmpl = lpfc_sli_abort_fcp_cmpl;
+
+ /*
+ * Indicate the IO is being aborted by the driver and set
+ * the caller's flag into the aborted IO.
+ */
+ iocbq->iocb_flag |= LPFC_DRIVER_ABORTED;
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ ring_number = MAX_SLI3_CONFIGURED_RINGS +
+ iocbq->fcp_wqidx;
+ pring_s4 = &phba->sli.ring[ring_number];
+ /* Note: both hbalock and ring_lock must be set here */
+ spin_lock_irqsave(&pring_s4->ring_lock, iflags);
+ ret_val = __lpfc_sli_issue_iocb(phba, pring_s4->ringno,
+ abtsiocbq, 0);
+ spin_unlock_irqrestore(&pring_s4->ring_lock, iflags);
+ } else {
+ ret_val = __lpfc_sli_issue_iocb(phba, pring->ringno,
+ abtsiocbq, 0);
+ }
+
+
+ if (ret_val == IOCB_ERROR)
+ __lpfc_sli_release_iocbq(phba, abtsiocbq);
+ else
+ sum++;
+ }
+ spin_unlock_irq(&phba->hbalock);
+ return sum;
+}
+
+/**
* lpfc_sli_wake_iocb_wait - lpfc_sli_issue_iocb_wait's completion handler
* @phba: Pointer to HBA context object.
* @cmdiocbq: Pointer to command iocb.
--
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