/**
* zfcp_qdio_reqid_check - checks for valid reqids.
*/
static void zfcp_qdio_reqid_check(struct zfcp_adapter *adapter,
unsigned long req_id)
{
struct zfcp_fsf_req *fsf_req;
unsigned long flags;
debug_long_event(adapter->erp_dbf, 4, req_id);
spin_lock_irqsave(&adapter->req_list_lock, flags);
fsf_req = zfcp_reqlist_find(adapter, req_id);
if (!fsf_req)
/*
* Unknown request means that we have potentially memory
* corruption and must stop the machine immediatly.
*/
panic("error: unknown request id (%ld) on adapter %s.\n",
req_id, zfcp_get_busid_by_adapter(adapter));
zfcp_reqlist_remove(adapter, fsf_req);
atomic_dec(&adapter->reqs_active);
spin_unlock_irqrestore(&adapter->req_list_lock, flags);
/* finish the FSF request */
zfcp_fsf_req_complete(fsf_req);
}
static void zfcp_qdio_reqid_check(struct zfcp_adapter *adapter,
unsigned long req_id, int sbal_idx)
{
struct zfcp_fsf_req *fsf_req;
unsigned long flags;
spin_lock_irqsave(&adapter->req_list_lock, flags);
fsf_req = zfcp_reqlist_find(adapter, req_id);
if (!fsf_req)
/*
* Unknown request means that we have potentially memory
* corruption and must stop the machine immediatly.
*/
panic("error: unknown request id (%lx) on adapter %s.\n",
req_id, zfcp_get_busid_by_adapter(adapter));
zfcp_reqlist_remove(adapter, fsf_req);
spin_unlock_irqrestore(&adapter->req_list_lock, flags);
fsf_req->sbal_response = sbal_idx;
fsf_req->qdio_inb_usage = atomic_read(&adapter->resp_q.count);
zfcp_fsf_req_complete(fsf_req);
}
static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt)
{
struct Scsi_Host *scsi_host = scpnt->device->host;
struct zfcp_adapter *adapter =
(struct zfcp_adapter *) scsi_host->hostdata[0];
struct zfcp_fsf_req *old_req, *abrt_req;
unsigned long flags;
unsigned long old_reqid = (unsigned long) scpnt->host_scribble;
int retval = SUCCESS, ret;
int retry = 3;
char *dbf_tag;
/* avoid race condition between late normal completion and abort */
write_lock_irqsave(&adapter->abort_lock, flags);
old_req = zfcp_reqlist_find(adapter->req_list, old_reqid);
if (!old_req) {
write_unlock_irqrestore(&adapter->abort_lock, flags);
zfcp_dbf_scsi_abort("abrt_or", scpnt, NULL);
return FAILED; /* completion could be in progress */
}
old_req->data = NULL;
/* don't access old fsf_req after releasing the abort_lock */
write_unlock_irqrestore(&adapter->abort_lock, flags);
while (retry--) {
abrt_req = zfcp_fsf_abort_fcp_cmnd(scpnt);
if (abrt_req)
break;
zfcp_dbf_scsi_abort("abrt_wt", scpnt, NULL);
zfcp_erp_wait(adapter);
ret = fc_block_scsi_eh(scpnt);
if (ret) {
zfcp_dbf_scsi_abort("abrt_bl", scpnt, NULL);
return ret;
}
if (!(atomic_read(&adapter->status) &
ZFCP_STATUS_COMMON_RUNNING)) {
zfcp_dbf_scsi_abort("abrt_ru", scpnt, NULL);
return SUCCESS;
}
}
if (!abrt_req) {
zfcp_dbf_scsi_abort("abrt_ar", scpnt, NULL);
return FAILED;
}
wait_for_completion(&abrt_req->completion);
if (abrt_req->status & ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED)
dbf_tag = "abrt_ok";
else if (abrt_req->status & ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED)
dbf_tag = "abrt_nn";
else {
dbf_tag = "abrt_fa";
retval = FAILED;
}
zfcp_dbf_scsi_abort(dbf_tag, scpnt, abrt_req);
zfcp_fsf_req_free(abrt_req);
return retval;
}
