From: Krishna Gudipati <kgudipat@xxxxxxxxxxx>
Change details:
- Temporarily revert the current LUN Masking implementation using slave_callouts.
- Please NOTE this is currently an RFC patch and it is done for clear review of
how an LLD will use LUN Masking implementation in scsi mid-layer.
Signed-off-by: Krishna Gudipati <kgudipat@xxxxxxxxxxx>
---
drivers/scsi/bfa/bfad_bsg.c | 27 ++-------------------
drivers/scsi/bfa/bfad_im.c | 54 -------------------------------------------
drivers/scsi/bfa/bfad_im.h | 26 --------------------
3 files changed, 3 insertions(+), 104 deletions(-)
diff --git a/drivers/scsi/bfa/bfad_bsg.c b/drivers/scsi/bfa/bfad_bsg.c
index 9c1495b..3c176b4 100644
--- a/drivers/scsi/bfa/bfad_bsg.c
+++ b/drivers/scsi/bfa/bfad_bsg.c
@@ -2353,21 +2353,6 @@ out:
return 0;
}
-/* Function to reset the LUN SCAN mode */
-static void
-bfad_iocmd_lunmask_reset_lunscan_mode(struct bfad_s *bfad, int lunmask_cfg)
-{
- struct bfad_im_port_s *pport_im = bfad->pport.im_port;
- struct bfad_vport_s *vport = NULL;
-
- /* Set the scsi device LUN SCAN flags for base port */
- bfad_reset_sdev_bflags(pport_im, lunmask_cfg);
-
- /* Set the scsi device LUN SCAN flags for the vports */
- list_for_each_entry(vport, &bfad->vport_list, list_entry)
- bfad_reset_sdev_bflags(vport->drv_port.im_port, lunmask_cfg);
-}
-
int
bfad_iocmd_lunmask(struct bfad_s *bfad, void *pcmd, unsigned int v_cmd)
{
@@ -2375,17 +2360,11 @@ bfad_iocmd_lunmask(struct bfad_s *bfad, void *pcmd, unsigned int v_cmd)
unsigned long flags;
spin_lock_irqsave(&bfad->bfad_lock, flags);
- if (v_cmd == IOCMD_FCPIM_LUNMASK_ENABLE) {
+ if (v_cmd == IOCMD_FCPIM_LUNMASK_ENABLE)
iocmd->status = bfa_fcpim_lunmask_update(&bfad->bfa, BFA_TRUE);
- /* Set the LUN Scanning mode to be Sequential scan */
- if (iocmd->status == BFA_STATUS_OK)
- bfad_iocmd_lunmask_reset_lunscan_mode(bfad, BFA_TRUE);
- } else if (v_cmd == IOCMD_FCPIM_LUNMASK_DISABLE) {
+ else if (v_cmd == IOCMD_FCPIM_LUNMASK_DISABLE)
iocmd->status = bfa_fcpim_lunmask_update(&bfad->bfa, BFA_FALSE);
- /* Set the LUN Scanning mode to default REPORT_LUNS scan */
- if (iocmd->status == BFA_STATUS_OK)
- bfad_iocmd_lunmask_reset_lunscan_mode(bfad, BFA_FALSE);
- } else if (v_cmd == IOCMD_FCPIM_LUNMASK_CLEAR)
+ else if (v_cmd == IOCMD_FCPIM_LUNMASK_CLEAR)
iocmd->status = bfa_fcpim_lunmask_clear(&bfad->bfa);
spin_unlock_irqrestore(&bfad->bfad_lock, flags);
return 0;
diff --git a/drivers/scsi/bfa/bfad_im.c b/drivers/scsi/bfa/bfad_im.c
index 2eebf8d..e4a5a23 100644
--- a/drivers/scsi/bfa/bfad_im.c
+++ b/drivers/scsi/bfa/bfad_im.c
@@ -914,70 +914,16 @@ bfad_get_itnim(struct bfad_im_port_s *im_port, int id)
}
/*
- * Function is invoked from the SCSI Host Template slave_alloc() entry point.
- * Has the logic to query the LUN Mask database to check if this LUN needs to
- * be made visible to the SCSI mid-layer or not.
- *
- * Returns BFA_STATUS_OK if this LUN needs to be added to the OS stack.
- * Returns -ENXIO to notify SCSI mid-layer to not add this LUN to the OS stack.
- */
-static int
-bfad_im_check_if_make_lun_visible(struct scsi_device *sdev,
- struct fc_rport *rport)
-{
- struct bfad_itnim_data_s *itnim_data =
- (struct bfad_itnim_data_s *) rport->dd_data;
- struct bfa_s *bfa = itnim_data->itnim->bfa_itnim->bfa;
- struct bfa_rport_s *bfa_rport = itnim_data->itnim->bfa_itnim->rport;
- struct bfa_lun_mask_s *lun_list = bfa_get_lun_mask_list(bfa);
- int i = 0, ret = -ENXIO;
-
- for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
- if (lun_list[i].state == BFA_IOIM_LUN_MASK_ACTIVE &&
- scsilun_to_int(&lun_list[i].lun) == sdev->lun &&
- lun_list[i].rp_tag == bfa_rport->rport_tag &&
- lun_list[i].lp_tag == (u8)bfa_rport->rport_info.lp_tag) {
- ret = BFA_STATUS_OK;
- break;
- }
- }
- return ret;
-}
-
-/*
* Scsi_Host template entry slave_alloc
*/
static int
bfad_im_slave_alloc(struct scsi_device *sdev)
{
struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
- struct bfad_itnim_data_s *itnim_data =
- (struct bfad_itnim_data_s *) rport->dd_data;
- struct bfa_s *bfa = itnim_data->itnim->bfa_itnim->bfa;
if (!rport || fc_remote_port_chkready(rport))
return -ENXIO;
- if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_ENABLED) {
- /*
- * We should not mask LUN 0 - since this will translate
- * to no LUN / TARGET for SCSI ml resulting no scan.
- */
- if (sdev->lun == 0) {
- sdev->sdev_bflags |= BLIST_NOREPORTLUN |
- BLIST_SPARSELUN;
- goto done;
- }
-
- /*
- * Query LUN Mask configuration - to expose this LUN
- * to the SCSI mid-layer or to mask it.
- */
- if (bfad_im_check_if_make_lun_visible(sdev, rport) !=
- BFA_STATUS_OK)
- return -ENXIO;
- }
-done:
sdev->hostdata = rport->dd_data;
return 0;
diff --git a/drivers/scsi/bfa/bfad_im.h b/drivers/scsi/bfa/bfad_im.h
index f6c1023..0bdbd43 100644
--- a/drivers/scsi/bfa/bfad_im.h
+++ b/drivers/scsi/bfa/bfad_im.h
@@ -168,30 +168,4 @@ irqreturn_t bfad_intx(int irq, void *dev_id);
int bfad_im_bsg_request(struct fc_bsg_job *job);
int bfad_im_bsg_timeout(struct fc_bsg_job *job);
-/*
- * Macro to set the SCSI device sdev_bflags - sdev_bflags are used by the
- * SCSI mid-layer to choose LUN Scanning mode REPORT_LUNS vs. Sequential Scan
- *
- * Internally iterate's over all the ITNIM's part of the im_port & set's the
- * sdev_bflags for the scsi_device associated with LUN #0.
- */
-#define bfad_reset_sdev_bflags(__im_port, __lunmask_cfg) do { \
- struct scsi_device *__sdev = NULL; \
- struct bfad_itnim_s *__itnim = NULL; \
- u32 scan_flags = BLIST_NOREPORTLUN | BLIST_SPARSELUN; \
- list_for_each_entry(__itnim, &((__im_port)->itnim_mapped_list), \
- list_entry) { \
- __sdev = scsi_device_lookup((__im_port)->shost, \
- __itnim->channel, \
- __itnim->scsi_tgt_id, 0); \
- if (__sdev) { \
- if ((__lunmask_cfg) == BFA_TRUE) \
- __sdev->sdev_bflags |= scan_flags; \
- else \
- __sdev->sdev_bflags &= ~scan_flags; \
- scsi_device_put(__sdev); \
- } \
- } \
-} while (0)
-
#endif
--
1.7.3.rc1
--
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