2e261af84c
The default trace level is to only trace failed FSF commands. Thus it is not necessary to collect trace data for most FSF commands, since it will be thrown away later. Restructure the FSF/HBA trace infrastructure to first check the trace level in a inline function and only do the expensive data collection for matching trace levels. Reviewed-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
357 lines
9.0 KiB
C
357 lines
9.0 KiB
C
/*
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* This file is part of the zfcp device driver for
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* FCP adapters for IBM System z9 and zSeries.
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*
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* Copyright IBM Corp. 2008, 2009
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef ZFCP_DBF_H
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#define ZFCP_DBF_H
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#include "zfcp_ext.h"
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#include "zfcp_fsf.h"
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#include "zfcp_def.h"
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#define ZFCP_DBF_TAG_SIZE 4
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#define ZFCP_DBF_ID_SIZE 7
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struct zfcp_dbf_dump {
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u8 tag[ZFCP_DBF_TAG_SIZE];
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u32 total_size; /* size of total dump data */
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u32 offset; /* how much data has being already dumped */
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u32 size; /* how much data comes with this record */
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u8 data[]; /* dump data */
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} __attribute__ ((packed));
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struct zfcp_rec_dbf_record_thread {
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u32 total;
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u32 ready;
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u32 running;
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};
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struct zfcp_rec_dbf_record_target {
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u64 ref;
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u32 status;
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u32 d_id;
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u64 wwpn;
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u64 fcp_lun;
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u32 erp_count;
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};
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struct zfcp_rec_dbf_record_trigger {
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u8 want;
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u8 need;
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u32 as;
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u32 ps;
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u32 us;
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u64 ref;
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u64 action;
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u64 wwpn;
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u64 fcp_lun;
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};
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struct zfcp_rec_dbf_record_action {
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u32 status;
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u32 step;
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u64 action;
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u64 fsf_req;
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};
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struct zfcp_rec_dbf_record {
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u8 id;
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char id2[7];
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union {
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struct zfcp_rec_dbf_record_action action;
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struct zfcp_rec_dbf_record_thread thread;
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struct zfcp_rec_dbf_record_target target;
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struct zfcp_rec_dbf_record_trigger trigger;
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} u;
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};
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enum {
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ZFCP_REC_DBF_ID_ACTION,
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ZFCP_REC_DBF_ID_THREAD,
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ZFCP_REC_DBF_ID_TARGET,
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ZFCP_REC_DBF_ID_TRIGGER,
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};
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struct zfcp_hba_dbf_record_response {
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u32 fsf_command;
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u64 fsf_reqid;
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u32 fsf_seqno;
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u64 fsf_issued;
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u32 fsf_prot_status;
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u32 fsf_status;
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u8 fsf_prot_status_qual[FSF_PROT_STATUS_QUAL_SIZE];
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u8 fsf_status_qual[FSF_STATUS_QUALIFIER_SIZE];
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u32 fsf_req_status;
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u8 sbal_first;
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u8 sbal_last;
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u8 sbal_response;
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u8 pool;
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u64 erp_action;
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union {
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struct {
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u64 cmnd;
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u64 serial;
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} fcp;
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struct {
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u64 wwpn;
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u32 d_id;
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u32 port_handle;
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} port;
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struct {
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u64 wwpn;
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u64 fcp_lun;
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u32 port_handle;
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u32 lun_handle;
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} unit;
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struct {
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u32 d_id;
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u8 ls_code;
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} els;
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} u;
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} __attribute__ ((packed));
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struct zfcp_hba_dbf_record_status {
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u8 failed;
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u32 status_type;
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u32 status_subtype;
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struct fsf_queue_designator
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queue_designator;
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u32 payload_size;
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#define ZFCP_DBF_UNSOL_PAYLOAD 80
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#define ZFCP_DBF_UNSOL_PAYLOAD_SENSE_DATA_AVAIL 32
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#define ZFCP_DBF_UNSOL_PAYLOAD_BIT_ERROR_THRESHOLD 56
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#define ZFCP_DBF_UNSOL_PAYLOAD_FEATURE_UPDATE_ALERT 2 * sizeof(u32)
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u8 payload[ZFCP_DBF_UNSOL_PAYLOAD];
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} __attribute__ ((packed));
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struct zfcp_hba_dbf_record_qdio {
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u32 qdio_error;
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u8 sbal_index;
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u8 sbal_count;
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} __attribute__ ((packed));
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struct zfcp_hba_dbf_record {
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u8 tag[ZFCP_DBF_TAG_SIZE];
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u8 tag2[ZFCP_DBF_TAG_SIZE];
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union {
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struct zfcp_hba_dbf_record_response response;
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struct zfcp_hba_dbf_record_status status;
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struct zfcp_hba_dbf_record_qdio qdio;
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struct fsf_bit_error_payload berr;
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} u;
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} __attribute__ ((packed));
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struct zfcp_san_dbf_record_ct_request {
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u16 cmd_req_code;
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u8 revision;
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u8 gs_type;
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u8 gs_subtype;
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u8 options;
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u16 max_res_size;
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u32 len;
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} __attribute__ ((packed));
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struct zfcp_san_dbf_record_ct_response {
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u16 cmd_rsp_code;
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u8 revision;
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u8 reason_code;
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u8 expl;
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u8 vendor_unique;
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u16 max_res_size;
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u32 len;
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} __attribute__ ((packed));
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struct zfcp_san_dbf_record_els {
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u8 ls_code;
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u32 len;
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} __attribute__ ((packed));
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struct zfcp_san_dbf_record {
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u8 tag[ZFCP_DBF_TAG_SIZE];
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u64 fsf_reqid;
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u32 fsf_seqno;
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u32 s_id;
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u32 d_id;
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union {
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struct zfcp_san_dbf_record_ct_request ct_req;
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struct zfcp_san_dbf_record_ct_response ct_resp;
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struct zfcp_san_dbf_record_els els;
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} u;
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#define ZFCP_DBF_SAN_MAX_PAYLOAD 1024
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u8 payload[32];
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} __attribute__ ((packed));
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struct zfcp_scsi_dbf_record {
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u8 tag[ZFCP_DBF_TAG_SIZE];
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u8 tag2[ZFCP_DBF_TAG_SIZE];
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u32 scsi_id;
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u32 scsi_lun;
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u32 scsi_result;
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u64 scsi_cmnd;
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u64 scsi_serial;
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#define ZFCP_DBF_SCSI_OPCODE 16
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u8 scsi_opcode[ZFCP_DBF_SCSI_OPCODE];
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u8 scsi_retries;
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u8 scsi_allowed;
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u64 fsf_reqid;
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u32 fsf_seqno;
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u64 fsf_issued;
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u64 old_fsf_reqid;
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u8 rsp_validity;
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u8 rsp_scsi_status;
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u32 rsp_resid;
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u8 rsp_code;
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#define ZFCP_DBF_SCSI_FCP_SNS_INFO 16
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#define ZFCP_DBF_SCSI_MAX_FCP_SNS_INFO 256
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u32 sns_info_len;
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u8 sns_info[ZFCP_DBF_SCSI_FCP_SNS_INFO];
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} __attribute__ ((packed));
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struct zfcp_dbf {
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debug_info_t *rec_dbf;
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debug_info_t *hba_dbf;
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debug_info_t *san_dbf;
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debug_info_t *scsi_dbf;
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spinlock_t rec_dbf_lock;
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spinlock_t hba_dbf_lock;
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spinlock_t san_dbf_lock;
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spinlock_t scsi_dbf_lock;
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struct zfcp_rec_dbf_record rec_dbf_buf;
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struct zfcp_hba_dbf_record hba_dbf_buf;
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struct zfcp_san_dbf_record san_dbf_buf;
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struct zfcp_scsi_dbf_record scsi_dbf_buf;
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};
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static inline
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void zfcp_hba_dbf_event_fsf_resp(const char *tag2, int level,
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struct zfcp_fsf_req *req, struct zfcp_dbf *dbf)
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{
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if (level <= dbf->hba_dbf->level)
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_zfcp_hba_dbf_event_fsf_response(tag2, level, req, dbf);
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}
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/**
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* zfcp_hba_dbf_event_fsf_response - trace event for request completion
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* @fsf_req: request that has been completed
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*/
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static inline void zfcp_hba_dbf_event_fsf_response(struct zfcp_fsf_req *req)
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{
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struct zfcp_dbf *dbf = req->adapter->dbf;
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struct fsf_qtcb *qtcb = req->qtcb;
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if ((qtcb->prefix.prot_status != FSF_PROT_GOOD) &&
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(qtcb->prefix.prot_status != FSF_PROT_FSF_STATUS_PRESENTED)) {
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zfcp_hba_dbf_event_fsf_resp("perr", 1, req, dbf);
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} else if (qtcb->header.fsf_status != FSF_GOOD) {
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zfcp_hba_dbf_event_fsf_resp("ferr", 1, req, dbf);
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} else if ((req->fsf_command == FSF_QTCB_OPEN_PORT_WITH_DID) ||
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(req->fsf_command == FSF_QTCB_OPEN_LUN)) {
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zfcp_hba_dbf_event_fsf_resp("open", 4, req, dbf);
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} else if (qtcb->header.log_length) {
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zfcp_hba_dbf_event_fsf_resp("qtcb", 5, req, dbf);
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} else {
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zfcp_hba_dbf_event_fsf_resp("norm", 6, req, dbf);
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}
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}
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/**
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* zfcp_hba_dbf_event_fsf_unsol - trace event for an unsolicited status buffer
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* @tag: tag indicating which kind of unsolicited status has been received
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* @adapter: adapter that has issued the unsolicited status buffer
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* @status_buffer: buffer containing payload of unsolicited status
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*/
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static inline
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void zfcp_hba_dbf_event_fsf_unsol(const char *tag, struct zfcp_adapter *adapter,
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struct fsf_status_read_buffer *buf)
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{
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struct zfcp_dbf *dbf = adapter->dbf;
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int level = 2;
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if (level <= dbf->hba_dbf->level)
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_zfcp_hba_dbf_event_fsf_unsol(tag, level, adapter, buf);
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}
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static inline
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void zfcp_scsi_dbf_event(const char *tag, const char *tag2, int level,
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struct zfcp_adapter *adapter, struct scsi_cmnd *scmd,
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struct zfcp_fsf_req *req, unsigned long old_id)
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{
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struct zfcp_dbf *dbf = adapter->dbf;
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if (level <= dbf->scsi_dbf->level)
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_zfcp_scsi_dbf_event(tag, tag2, level, dbf, scmd, req, old_id);
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}
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/**
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* zfcp_scsi_dbf_event_result - trace event for SCSI command completion
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* @tag: tag indicating success or failure of SCSI command
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* @level: trace level applicable for this event
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* @adapter: adapter that has been used to issue the SCSI command
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* @scmd: SCSI command pointer
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* @fsf_req: request used to issue SCSI command (might be NULL)
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*/
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static inline
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void zfcp_scsi_dbf_event_result(const char *tag, int level,
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struct zfcp_adapter *adapter,
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struct scsi_cmnd *scmd,
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struct zfcp_fsf_req *fsf_req)
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{
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zfcp_scsi_dbf_event("rslt", tag, level, adapter, scmd, fsf_req, 0);
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}
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/**
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* zfcp_scsi_dbf_event_abort - trace event for SCSI command abort
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* @tag: tag indicating success or failure of abort operation
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* @adapter: adapter thas has been used to issue SCSI command to be aborted
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* @scmd: SCSI command to be aborted
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* @new_req: request containing abort (might be NULL)
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* @old_id: identifier of request containg SCSI command to be aborted
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*/
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static inline
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void zfcp_scsi_dbf_event_abort(const char *tag, struct zfcp_adapter *adapter,
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struct scsi_cmnd *scmd,
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struct zfcp_fsf_req *new_req,
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unsigned long old_id)
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{
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zfcp_scsi_dbf_event("abrt", tag, 1, adapter, scmd, new_req, old_id);
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}
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/**
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* zfcp_scsi_dbf_event_devreset - trace event for Logical Unit or Target Reset
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* @tag: tag indicating success or failure of reset operation
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* @flag: indicates type of reset (Target Reset, Logical Unit Reset)
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* @unit: unit that needs reset
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* @scsi_cmnd: SCSI command which caused this error recovery
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*/
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static inline
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void zfcp_scsi_dbf_event_devreset(const char *tag, u8 flag,
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struct zfcp_unit *unit,
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struct scsi_cmnd *scsi_cmnd)
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{
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zfcp_scsi_dbf_event(flag == FCP_TARGET_RESET ? "trst" : "lrst", tag, 1,
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unit->port->adapter, scsi_cmnd, NULL, 0);
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}
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#endif /* ZFCP_DBF_H */
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