/**
* zfcp_san_dbf_event_els_request - trace event for issued ELS
* @fsf_req: request containing issued ELS
*/
void zfcp_san_dbf_event_els_request(struct zfcp_fsf_req *fsf_req)
{
struct zfcp_send_els *els = (struct zfcp_send_els *)fsf_req->data;
zfcp_san_dbf_event_els("oels", 2, fsf_req,
fc_host_port_id(els->adapter->scsi_host),
els->d_id, *(u8 *) zfcp_sg_to_address(els->req),
zfcp_sg_to_address(els->req), els->req->length);
}
void zfcp_san_dbf_event_els_response(struct zfcp_fsf_req *fsf_req)
{
struct zfcp_send_els *els = (struct zfcp_send_els *)fsf_req->data;
_zfcp_san_dbf_event_common_els("rels", 2, fsf_req, els->d_id,
fc_host_port_id(els->adapter->scsi_host),
*(u8 *) zfcp_sg_to_address(els->req),
zfcp_sg_to_address(els->resp),
els->resp->length);
}
/**
* zfcp_qdio_sbals_from_sg - fill SBALs from scatter-gather list
* @fsf_req: request to be processed
* @sbtype: SBALE flags
* @sg: scatter-gather list
* @sg_count: number of elements in scatter-gather list
* @max_sbals: upper bound for number of SBALs to be used
*/
int
zfcp_qdio_sbals_from_sg(struct zfcp_fsf_req *fsf_req, unsigned long sbtype,
struct scatterlist *sgl, int sg_count, int max_sbals)
{
int sg_index;
struct scatterlist *sg_segment;
int retval;
volatile struct qdio_buffer_element *sbale;
int bytes = 0;
/* figure out last allowed SBAL */
zfcp_qdio_sbal_limit(fsf_req, max_sbals);
/* set storage-block type for current SBAL */
sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
sbale->flags |= sbtype;
/* process all segements of scatter-gather list */
for_each_sg(sgl, sg_segment, sg_count, sg_index) {
retval = zfcp_qdio_sbals_from_segment(
fsf_req,
sbtype,
zfcp_sg_to_address(sg_segment),
sg_segment->length);
if (retval < 0) {
bytes = retval;
goto out;
} else
bytes += retval;
}
/**
* zfcp_san_dbf_event_ct_response - trace event for completion of CT request
* @fsf_req: request containing CT response
*/
void zfcp_san_dbf_event_ct_response(struct zfcp_fsf_req *fsf_req)
{
struct zfcp_send_ct *ct = (struct zfcp_send_ct *)fsf_req->data;
struct zfcp_port *port = ct->port;
struct zfcp_adapter *adapter = port->adapter;
struct ct_hdr *hdr = zfcp_sg_to_address(ct->resp);
struct zfcp_san_dbf_record *r = &adapter->san_dbf_buf;
struct zfcp_san_dbf_record_ct_response *rct = &r->u.ct_resp;
unsigned long flags;
spin_lock_irqsave(&adapter->san_dbf_lock, flags);
memset(r, 0, sizeof(*r));
strncpy(r->tag, "rctc", ZFCP_DBF_TAG_SIZE);
r->fsf_reqid = (unsigned long)fsf_req;
r->fsf_seqno = fsf_req->seq_no;
r->s_id = port->d_id;
r->d_id = fc_host_port_id(adapter->scsi_host);
rct->cmd_rsp_code = hdr->cmd_rsp_code;
rct->revision = hdr->revision;
rct->reason_code = hdr->reason_code;
rct->expl = hdr->reason_code_expl;
rct->vendor_unique = hdr->vendor_unique;
rct->len = min((int)ct->resp->length - (int)sizeof(struct ct_hdr),
ZFCP_DBF_CT_PAYLOAD);
memcpy(rct->payload, (void *)hdr + sizeof(struct ct_hdr), rct->len);
debug_event(adapter->san_dbf, 3, r, sizeof(*r));
spin_unlock_irqrestore(&adapter->san_dbf_lock, flags);
}
void zfcp_san_dbf_event_ct_response(struct zfcp_fsf_req *fsf_req)
{
struct zfcp_send_ct *ct = (struct zfcp_send_ct *)fsf_req->data;
struct zfcp_port *port = ct->port;
struct zfcp_adapter *adapter = port->adapter;
_zfcp_san_dbf_event_common_ct("rctc", fsf_req, port->d_id,
fc_host_port_id(adapter->scsi_host),
zfcp_sg_to_address(ct->resp),
ct->resp->length);
}
/**
* zfcp_qdio_sbals_from_sg - fill SBALs from scatter-gather list
* @fsf_req: request to be processed
* @sbtype: SBALE flags
* @sg: scatter-gather list
* @sg_count: number of elements in scatter-gather list
* @max_sbals: upper bound for number of SBALs to be used
*/
inline int
zfcp_qdio_sbals_from_sg(struct zfcp_fsf_req *fsf_req, unsigned long sbtype,
struct scatterlist *sg, int sg_count, int max_sbals)
{
int sg_index;
struct scatterlist *sg_segment;
int retval;
volatile struct qdio_buffer_element *sbale;
int bytes = 0;
/* figure out last allowed SBAL */
zfcp_qdio_sbal_limit(fsf_req, max_sbals);
/* set storage-block type for current SBAL */
sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
sbale->flags |= sbtype;
/* process all segements of scatter-gather list */
for (sg_index = 0, sg_segment = sg, bytes = 0;
sg_index < sg_count;
sg_index++, sg_segment++) {
retval = zfcp_qdio_sbals_from_segment(
fsf_req,
sbtype,
zfcp_sg_to_address(sg_segment),
sg_segment->length);
if (retval < 0) {
bytes = retval;
goto out;
} else
bytes += retval;
}
/* assume that no other SBALEs are to follow in the same SBAL */
sbale = zfcp_qdio_sbale_curr(fsf_req);
sbale->flags |= SBAL_FLAGS_LAST_ENTRY;
out:
#ifdef ZFCP_STAT_REQSIZES
if (sbtype == SBAL_FLAGS0_TYPE_READ) {
zfcp_statistics_inc(&zfcp_data.read_sguse_head, sg_count);
zfcp_statistics_inc(&zfcp_data.read_req_head, bytes);
} else {
zfcp_statistics_inc(&zfcp_data.write_sguse_head, sg_count);
zfcp_statistics_inc(&zfcp_data.write_req_head, bytes);
}
#endif
return bytes;
}
