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scsi: ibmvfc: Open-code reset loop for target reset

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For target reset we need a device to send the target reset to, so open-code
the loop in target reset to send the target reset TMF to the correct
device.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20231002154328.43718-11-hare@suse.de
Cc: Tyrel Datwyler <tyreld@linux.ibm.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Hannes Reinecke 2023-10-02 17:43:20 +02:00 committed by Martin K. Petersen
parent c67e638004
commit 397ff21a96
1 changed files with 23 additions and 19 deletions
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42
drivers/scsi/ibmvscsi/ibmvfc.c
View file

@ -2930,18 +2930,6 @@ static void ibmvfc_dev_cancel_all_noreset(struct scsi_device *sdev, void *data)
*rc |= ibmvfc_cancel_all(sdev, IBMVFC_TMF_SUPPRESS_ABTS);
}
/**
* ibmvfc_dev_cancel_all_reset - Device iterated cancel all function
* @sdev: scsi device struct
* @data: return code
*
**/
static void ibmvfc_dev_cancel_all_reset(struct scsi_device *sdev, void *data)
{
unsigned long *rc = data;
*rc |= ibmvfc_cancel_all(sdev, IBMVFC_TMF_TGT_RESET);
}
/**
* ibmvfc_eh_target_reset_handler - Reset the target
* @cmd: scsi command struct
@ -2951,22 +2939,38 @@ static void ibmvfc_dev_cancel_all_reset(struct scsi_device *sdev, void *data)
**/
static int ibmvfc_eh_target_reset_handler(struct scsi_cmnd *cmd)
{
struct scsi_device *sdev = cmd->device;
struct ibmvfc_host *vhost = shost_priv(sdev->host);
struct scsi_target *starget = scsi_target(sdev);
struct scsi_target *starget = scsi_target(cmd->device);
struct fc_rport *rport = starget_to_rport(starget);
struct Scsi_Host *shost = rport_to_shost(rport);
struct ibmvfc_host *vhost = shost_priv(shost);
int block_rc;
int reset_rc = 0;
int rc = FAILED;
unsigned long cancel_rc = 0;
bool tgt_reset = false;
ENTER;
block_rc = fc_block_scsi_eh(cmd);
block_rc = fc_block_rport(rport);
ibmvfc_wait_while_resetting(vhost);
if (block_rc != FAST_IO_FAIL) {
starget_for_each_device(starget, &cancel_rc, ibmvfc_dev_cancel_all_reset);
reset_rc = ibmvfc_reset_device(sdev, IBMVFC_TARGET_RESET, "target");
struct scsi_device *sdev;
shost_for_each_device(sdev, shost) {
if ((sdev->channel != starget->channel) ||
(sdev->id != starget->id))
continue;
cancel_rc |= ibmvfc_cancel_all(sdev,
IBMVFC_TMF_TGT_RESET);
if (!tgt_reset) {
reset_rc = ibmvfc_reset_device(sdev,
IBMVFC_TARGET_RESET, "target");
tgt_reset = true;
}
}
} else
starget_for_each_device(starget, &cancel_rc, ibmvfc_dev_cancel_all_noreset);
starget_for_each_device(starget, &cancel_rc,
ibmvfc_dev_cancel_all_noreset);
if (!cancel_rc && !reset_rc)
rc = ibmvfc_wait_for_ops(vhost, starget, ibmvfc_match_target);