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5ab944f97e
linux/drivers/s390/scsi/zfcp_dbf.c
Swen Schillig 5ab944f97e [SCSI] zfcp: attach and release SAN nameserver port on demand 
Changing the zfcp behaviour from always having the nameserver port
open to an on-demand strategy.  This strategy reduces the use of
limited resources like port connections. The patch provides a common
infrastructure which could be used for all WKA ports in future.

Also reduce the number of nameserver lookups by changing the zfcp
behaviour of always querying the nameserver for the corresponding
destination ID of the remote port.  If the destination ID has changed
during the reopen process we will be informed and then trigger a
nameserver query on demand.

Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-10-03 12:11:53 -05:00

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/*
* zfcp device driver
*
* Debug traces for zfcp.
*
* Copyright IBM Corporation 2002, 2008
*/
#include <linux/ctype.h>
#include <asm/debug.h>
#include "zfcp_ext.h"
static u32 dbfsize = 4;
module_param(dbfsize, uint, 0400);
MODULE_PARM_DESC(dbfsize,
"number of pages for each debug feature area (default 4)");
static void zfcp_dbf_hexdump(debug_info_t *dbf, void *to, int to_len,
int level, char *from, int from_len)
{
int offset;
struct zfcp_dbf_dump *dump = to;
int room = to_len - sizeof(*dump);
for (offset = 0; offset < from_len; offset += dump->size) {
memset(to, 0, to_len);
strncpy(dump->tag, "dump", ZFCP_DBF_TAG_SIZE);
dump->total_size = from_len;
dump->offset = offset;
dump->size = min(from_len - offset, room);
memcpy(dump->data, from + offset, dump->size);
debug_event(dbf, level, dump, dump->size);
}
}
/* FIXME: this duplicate this code in s390 debug feature */
static void zfcp_dbf_timestamp(unsigned long long stck, struct timespec *time)
{
unsigned long long sec;
stck -= 0x8126d60e46000000LL - (0x3c26700LL * 1000000 * 4096);
sec = stck >> 12;
do_div(sec, 1000000);
time->tv_sec = sec;
stck -= (sec * 1000000) << 12;
time->tv_nsec = ((stck * 1000) >> 12);
}
static void zfcp_dbf_tag(char **p, const char *label, const char *tag)
{
int i;
*p += sprintf(*p, "%-24s", label);
for (i = 0; i < ZFCP_DBF_TAG_SIZE; i++)
*p += sprintf(*p, "%c", tag[i]);
*p += sprintf(*p, "\n");
}
static void zfcp_dbf_outs(char **buf, const char *s1, const char *s2)
{
*buf += sprintf(*buf, "%-24s%s\n", s1, s2);
}
static void zfcp_dbf_out(char **buf, const char *s, const char *format, ...)
{
va_list arg;
*buf += sprintf(*buf, "%-24s", s);
va_start(arg, format);
*buf += vsprintf(*buf, format, arg);
va_end(arg);
*buf += sprintf(*buf, "\n");
}
static void zfcp_dbf_outd(char **p, const char *label, char *buffer,
int buflen, int offset, int total_size)
{
if (!offset)
*p += sprintf(*p, "%-24s ", label);
while (buflen--) {
if (offset > 0) {
if ((offset % 32) == 0)
*p += sprintf(*p, "\n%-24c ", ' ');
else if ((offset % 4) == 0)
*p += sprintf(*p, " ");
}
*p += sprintf(*p, "%02x", *buffer++);
if (++offset == total_size) {
*p += sprintf(*p, "\n");
break;
}
}
if (!total_size)
*p += sprintf(*p, "\n");
}
static int zfcp_dbf_view_header(debug_info_t *id, struct debug_view *view,
int area, debug_entry_t *entry, char *out_buf)
{
struct zfcp_dbf_dump *dump = (struct zfcp_dbf_dump *)DEBUG_DATA(entry);
struct timespec t;
char *p = out_buf;
if (strncmp(dump->tag, "dump", ZFCP_DBF_TAG_SIZE) != 0) {
zfcp_dbf_timestamp(entry->id.stck, &t);
zfcp_dbf_out(&p, "timestamp", "%011lu:%06lu",
t.tv_sec, t.tv_nsec);
zfcp_dbf_out(&p, "cpu", "%02i", entry->id.fields.cpuid);
} else {
zfcp_dbf_outd(&p, NULL, dump->data, dump->size, dump->offset,
dump->total_size);
if ((dump->offset + dump->size) == dump->total_size)
p += sprintf(p, "\n");
}
return p - out_buf;
}
/**
* zfcp_hba_dbf_event_fsf_response - trace event for request completion
* @fsf_req: request that has been completed
*/
void zfcp_hba_dbf_event_fsf_response(struct zfcp_fsf_req *fsf_req)
{
struct zfcp_adapter *adapter = fsf_req->adapter;
struct fsf_qtcb *qtcb = fsf_req->qtcb;
union fsf_prot_status_qual *prot_status_qual =
&qtcb->prefix.prot_status_qual;
union fsf_status_qual *fsf_status_qual = &qtcb->header.fsf_status_qual;
struct scsi_cmnd *scsi_cmnd;
struct zfcp_port *port;
struct zfcp_unit *unit;
struct zfcp_send_els *send_els;
struct zfcp_hba_dbf_record *rec = &adapter->hba_dbf_buf;
struct zfcp_hba_dbf_record_response *response = &rec->u.response;
int level;
unsigned long flags;
spin_lock_irqsave(&adapter->hba_dbf_lock, flags);
memset(rec, 0, sizeof(*rec));
strncpy(rec->tag, "resp", ZFCP_DBF_TAG_SIZE);
if ((qtcb->prefix.prot_status != FSF_PROT_GOOD) &&
(qtcb->prefix.prot_status != FSF_PROT_FSF_STATUS_PRESENTED)) {
strncpy(rec->tag2, "perr", ZFCP_DBF_TAG_SIZE);
level = 1;
} else if (qtcb->header.fsf_status != FSF_GOOD) {
strncpy(rec->tag2, "ferr", ZFCP_DBF_TAG_SIZE);
level = 1;
} else if ((fsf_req->fsf_command == FSF_QTCB_OPEN_PORT_WITH_DID) ||
(fsf_req->fsf_command == FSF_QTCB_OPEN_LUN)) {
strncpy(rec->tag2, "open", ZFCP_DBF_TAG_SIZE);
level = 4;
} else if (qtcb->header.log_length) {
strncpy(rec->tag2, "qtcb", ZFCP_DBF_TAG_SIZE);
level = 5;
} else {
strncpy(rec->tag2, "norm", ZFCP_DBF_TAG_SIZE);
level = 6;
}
response->fsf_command = fsf_req->fsf_command;
response->fsf_reqid = (unsigned long)fsf_req;
response->fsf_seqno = fsf_req->seq_no;
response->fsf_issued = fsf_req->issued;
response->fsf_prot_status = qtcb->prefix.prot_status;
response->fsf_status = qtcb->header.fsf_status;
memcpy(response->fsf_prot_status_qual,
prot_status_qual, FSF_PROT_STATUS_QUAL_SIZE);
memcpy(response->fsf_status_qual,
fsf_status_qual, FSF_STATUS_QUALIFIER_SIZE);
response->fsf_req_status = fsf_req->status;
response->sbal_first = fsf_req->sbal_first;
response->sbal_last = fsf_req->sbal_last;
response->sbal_response = fsf_req->sbal_response;
response->pool = fsf_req->pool != NULL;
response->erp_action = (unsigned long)fsf_req->erp_action;
switch (fsf_req->fsf_command) {
case FSF_QTCB_FCP_CMND:
if (fsf_req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)
break;
scsi_cmnd = (struct scsi_cmnd *)fsf_req->data;
if (scsi_cmnd) {
response->u.fcp.cmnd = (unsigned long)scsi_cmnd;
response->u.fcp.serial = scsi_cmnd->serial_number;
}
break;
case FSF_QTCB_OPEN_PORT_WITH_DID:
case FSF_QTCB_CLOSE_PORT:
case FSF_QTCB_CLOSE_PHYSICAL_PORT:
port = (struct zfcp_port *)fsf_req->data;
response->u.port.wwpn = port->wwpn;
response->u.port.d_id = port->d_id;
response->u.port.port_handle = qtcb->header.port_handle;
break;
case FSF_QTCB_OPEN_LUN:
case FSF_QTCB_CLOSE_LUN:
unit = (struct zfcp_unit *)fsf_req->data;
port = unit->port;
response->u.unit.wwpn = port->wwpn;
response->u.unit.fcp_lun = unit->fcp_lun;
response->u.unit.port_handle = qtcb->header.port_handle;
response->u.unit.lun_handle = qtcb->header.lun_handle;
break;
case FSF_QTCB_SEND_ELS:
send_els = (struct zfcp_send_els *)fsf_req->data;
response->u.els.d_id = qtcb->bottom.support.d_id;
response->u.els.ls_code = send_els->ls_code >> 24;
break;
case FSF_QTCB_ABORT_FCP_CMND:
case FSF_QTCB_SEND_GENERIC:
case FSF_QTCB_EXCHANGE_CONFIG_DATA:
case FSF_QTCB_EXCHANGE_PORT_DATA:
case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
case FSF_QTCB_UPLOAD_CONTROL_FILE:
break;
}
debug_event(adapter->hba_dbf, level, rec, sizeof(*rec));
/* have fcp channel microcode fixed to use as little as possible */
if (fsf_req->fsf_command != FSF_QTCB_FCP_CMND) {
/* adjust length skipping trailing zeros */
char *buf = (char *)qtcb + qtcb->header.log_start;
int len = qtcb->header.log_length;
for (; len && !buf[len - 1]; len--);
zfcp_dbf_hexdump(adapter->hba_dbf, rec, sizeof(*rec), level,
buf, len);
}
spin_unlock_irqrestore(&adapter->hba_dbf_lock, flags);
}
/**
* zfcp_hba_dbf_event_fsf_unsol - trace event for an unsolicited status buffer
* @tag: tag indicating which kind of unsolicited status has been received
* @adapter: adapter that has issued the unsolicited status buffer
* @status_buffer: buffer containing payload of unsolicited status
*/
void zfcp_hba_dbf_event_fsf_unsol(const char *tag, struct zfcp_adapter *adapter,
struct fsf_status_read_buffer *status_buffer)
{
struct zfcp_hba_dbf_record *rec = &adapter->hba_dbf_buf;
unsigned long flags;
spin_lock_irqsave(&adapter->hba_dbf_lock, flags);
memset(rec, 0, sizeof(*rec));
strncpy(rec->tag, "stat", ZFCP_DBF_TAG_SIZE);
strncpy(rec->tag2, tag, ZFCP_DBF_TAG_SIZE);
rec->u.status.failed = atomic_read(&adapter->stat_miss);
if (status_buffer != NULL) {
rec->u.status.status_type = status_buffer->status_type;
rec->u.status.status_subtype = status_buffer->status_subtype;
memcpy(&rec->u.status.queue_designator,
&status_buffer->queue_designator,
sizeof(struct fsf_queue_designator));
switch (status_buffer->status_type) {
case FSF_STATUS_READ_SENSE_DATA_AVAIL:
rec->u.status.payload_size =
ZFCP_DBF_UNSOL_PAYLOAD_SENSE_DATA_AVAIL;
break;
case FSF_STATUS_READ_BIT_ERROR_THRESHOLD:
rec->u.status.payload_size =
ZFCP_DBF_UNSOL_PAYLOAD_BIT_ERROR_THRESHOLD;
break;
case FSF_STATUS_READ_LINK_DOWN:
switch (status_buffer->status_subtype) {
case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK:
case FSF_STATUS_READ_SUB_FDISC_FAILED:
rec->u.status.payload_size =
sizeof(struct fsf_link_down_info);
}
break;
case FSF_STATUS_READ_FEATURE_UPDATE_ALERT:
rec->u.status.payload_size =
ZFCP_DBF_UNSOL_PAYLOAD_FEATURE_UPDATE_ALERT;
break;
}
memcpy(&rec->u.status.payload,
&status_buffer->payload, rec->u.status.payload_size);
}
debug_event(adapter->hba_dbf, 2, rec, sizeof(*rec));
spin_unlock_irqrestore(&adapter->hba_dbf_lock, flags);
}
/**
* zfcp_hba_dbf_event_qdio - trace event for QDIO related failure
* @adapter: adapter affected by this QDIO related event
* @qdio_error: as passed by qdio module
* @sbal_index: first buffer with error condition, as passed by qdio module
* @sbal_count: number of buffers affected, as passed by qdio module
*/
void zfcp_hba_dbf_event_qdio(struct zfcp_adapter *adapter,
unsigned int qdio_error, int sbal_index,
int sbal_count)
{
struct zfcp_hba_dbf_record *r = &adapter->hba_dbf_buf;
unsigned long flags;
spin_lock_irqsave(&adapter->hba_dbf_lock, flags);
memset(r, 0, sizeof(*r));
strncpy(r->tag, "qdio", ZFCP_DBF_TAG_SIZE);
r->u.qdio.qdio_error = qdio_error;
r->u.qdio.sbal_index = sbal_index;
r->u.qdio.sbal_count = sbal_count;
debug_event(adapter->hba_dbf, 0, r, sizeof(*r));
spin_unlock_irqrestore(&adapter->hba_dbf_lock, flags);
}
static void zfcp_hba_dbf_view_response(char **p,
struct zfcp_hba_dbf_record_response *r)
{
struct timespec t;
zfcp_dbf_out(p, "fsf_command", "0x%08x", r->fsf_command);
zfcp_dbf_out(p, "fsf_reqid", "0x%0Lx", r->fsf_reqid);
zfcp_dbf_out(p, "fsf_seqno", "0x%08x", r->fsf_seqno);
zfcp_dbf_timestamp(r->fsf_issued, &t);
zfcp_dbf_out(p, "fsf_issued", "%011lu:%06lu", t.tv_sec, t.tv_nsec);
zfcp_dbf_out(p, "fsf_prot_status", "0x%08x", r->fsf_prot_status);
zfcp_dbf_out(p, "fsf_status", "0x%08x", r->fsf_status);
zfcp_dbf_outd(p, "fsf_prot_status_qual", r->fsf_prot_status_qual,
FSF_PROT_STATUS_QUAL_SIZE, 0, FSF_PROT_STATUS_QUAL_SIZE);
zfcp_dbf_outd(p, "fsf_status_qual", r->fsf_status_qual,
FSF_STATUS_QUALIFIER_SIZE, 0, FSF_STATUS_QUALIFIER_SIZE);
zfcp_dbf_out(p, "fsf_req_status", "0x%08x", r->fsf_req_status);
zfcp_dbf_out(p, "sbal_first", "0x%02x", r->sbal_first);
zfcp_dbf_out(p, "sbal_last", "0x%02x", r->sbal_last);
zfcp_dbf_out(p, "sbal_response", "0x%02x", r->sbal_response);
zfcp_dbf_out(p, "pool", "0x%02x", r->pool);
switch (r->fsf_command) {
case FSF_QTCB_FCP_CMND:
if (r->fsf_req_status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)
break;
zfcp_dbf_out(p, "scsi_cmnd", "0x%0Lx", r->u.fcp.cmnd);
zfcp_dbf_out(p, "scsi_serial", "0x%016Lx", r->u.fcp.serial);
break;
case FSF_QTCB_OPEN_PORT_WITH_DID:
case FSF_QTCB_CLOSE_PORT:
case FSF_QTCB_CLOSE_PHYSICAL_PORT:
zfcp_dbf_out(p, "wwpn", "0x%016Lx", r->u.port.wwpn);
zfcp_dbf_out(p, "d_id", "0x%06x", r->u.port.d_id);
zfcp_dbf_out(p, "port_handle", "0x%08x", r->u.port.port_handle);
break;
case FSF_QTCB_OPEN_LUN:
case FSF_QTCB_CLOSE_LUN:
zfcp_dbf_out(p, "wwpn", "0x%016Lx", r->u.unit.wwpn);
zfcp_dbf_out(p, "fcp_lun", "0x%016Lx", r->u.unit.fcp_lun);
zfcp_dbf_out(p, "port_handle", "0x%08x", r->u.unit.port_handle);
zfcp_dbf_out(p, "lun_handle", "0x%08x", r->u.unit.lun_handle);
break;
case FSF_QTCB_SEND_ELS:
zfcp_dbf_out(p, "d_id", "0x%06x", r->u.els.d_id);
zfcp_dbf_out(p, "ls_code", "0x%02x", r->u.els.ls_code);
break;
case FSF_QTCB_ABORT_FCP_CMND:
case FSF_QTCB_SEND_GENERIC:
case FSF_QTCB_EXCHANGE_CONFIG_DATA:
case FSF_QTCB_EXCHANGE_PORT_DATA:
case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
case FSF_QTCB_UPLOAD_CONTROL_FILE:
break;
}
}
static void zfcp_hba_dbf_view_status(char **p,
struct zfcp_hba_dbf_record_status *r)
{
zfcp_dbf_out(p, "failed", "0x%02x", r->failed);
zfcp_dbf_out(p, "status_type", "0x%08x", r->status_type);
zfcp_dbf_out(p, "status_subtype", "0x%08x", r->status_subtype);
zfcp_dbf_outd(p, "queue_designator", (char *)&r->queue_designator,
sizeof(struct fsf_queue_designator), 0,
sizeof(struct fsf_queue_designator));
zfcp_dbf_outd(p, "payload", (char *)&r->payload, r->payload_size, 0,
r->payload_size);
}
static void zfcp_hba_dbf_view_qdio(char **p, struct zfcp_hba_dbf_record_qdio *r)
{
zfcp_dbf_out(p, "qdio_error", "0x%08x", r->qdio_error);
zfcp_dbf_out(p, "sbal_index", "0x%02x", r->sbal_index);
zfcp_dbf_out(p, "sbal_count", "0x%02x", r->sbal_count);
}
static int zfcp_hba_dbf_view_format(debug_info_t *id, struct debug_view *view,
char *out_buf, const char *in_buf)
{
struct zfcp_hba_dbf_record *r = (struct zfcp_hba_dbf_record *)in_buf;
char *p = out_buf;
if (strncmp(r->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0)
return 0;
zfcp_dbf_tag(&p, "tag", r->tag);
if (isalpha(r->tag2[0]))
zfcp_dbf_tag(&p, "tag2", r->tag2);
if (strncmp(r->tag, "resp", ZFCP_DBF_TAG_SIZE) == 0)
zfcp_hba_dbf_view_response(&p, &r->u.response);
else if (strncmp(r->tag, "stat", ZFCP_DBF_TAG_SIZE) == 0)
zfcp_hba_dbf_view_status(&p, &r->u.status);
else if (strncmp(r->tag, "qdio", ZFCP_DBF_TAG_SIZE) == 0)
zfcp_hba_dbf_view_qdio(&p, &r->u.qdio);
p += sprintf(p, "\n");
return p - out_buf;
}
static struct debug_view zfcp_hba_dbf_view = {
"structured",
NULL,
&zfcp_dbf_view_header,
&zfcp_hba_dbf_view_format,
NULL,
NULL
};
static const char *zfcp_rec_dbf_tags[] = {
[ZFCP_REC_DBF_ID_THREAD] = "thread",
[ZFCP_REC_DBF_ID_TARGET] = "target",
[ZFCP_REC_DBF_ID_TRIGGER] = "trigger",
[ZFCP_REC_DBF_ID_ACTION] = "action",
};
static const char *zfcp_rec_dbf_ids[] = {
[1] = "new",
[2] = "ready",
[3] = "kill",
[4] = "down sleep",
[5] = "down wakeup",
[6] = "down sleep ecd",
[7] = "down wakeup ecd",
[8] = "down sleep epd",
[9] = "down wakeup epd",
[10] = "online",
[11] = "operational",
[12] = "scsi slave destroy",
[13] = "propagate failed adapter",
[14] = "propagate failed port",
[15] = "block adapter",
[16] = "unblock adapter",
[17] = "block port",
[18] = "unblock port",
[19] = "block unit",
[20] = "unblock unit",
[21] = "unit recovery failed",
[22] = "port recovery failed",
[23] = "adapter recovery failed",
[24] = "qdio queues down",
[25] = "p2p failed",
[26] = "nameserver lookup failed",
[27] = "nameserver port failed",
[28] = "link up",
[29] = "link down",
[30] = "link up status read",
[31] = "open port failed",
[32] = "open port failed",
[33] = "close port",
[34] = "open unit failed",
[35] = "exclusive open unit failed",
[36] = "shared open unit failed",
[37] = "link down",
[38] = "link down status read no link",
[39] = "link down status read fdisc login",
[40] = "link down status read firmware update",
[41] = "link down status read unknown reason",
[42] = "link down ecd incomplete",
[43] = "link down epd incomplete",
[44] = "sysfs adapter recovery",
[45] = "sysfs port recovery",
[46] = "sysfs unit recovery",
[47] = "port boxed abort",
[48] = "unit boxed abort",
[49] = "port boxed ct",
[50] = "port boxed close physical",
[51] = "port boxed open unit",
[52] = "port boxed close unit",
[53] = "port boxed fcp",
[54] = "unit boxed fcp",
[55] = "port access denied",
[56] = "",
[57] = "",
[58] = "",
[59] = "unit access denied",
[60] = "shared unit access denied open unit",
[61] = "",
[62] = "request timeout",
[63] = "adisc link test reject or timeout",
[64] = "adisc link test d_id changed",
[65] = "adisc link test failed",
[66] = "recovery out of memory",
[67] = "adapter recovery repeated after state change",
[68] = "port recovery repeated after state change",
[69] = "unit recovery repeated after state change",
[70] = "port recovery follow-up after successful adapter recovery",
[71] = "adapter recovery escalation after failed adapter recovery",
[72] = "port recovery follow-up after successful physical port "
"recovery",
[73] = "adapter recovery escalation after failed physical port "
"recovery",
[74] = "unit recovery follow-up after successful port recovery",
[75] = "physical port recovery escalation after failed port "
"recovery",
[76] = "port recovery escalation after failed unit recovery",
[77] = "",
[78] = "duplicate request id",
[79] = "link down",
[80] = "exclusive read-only unit access unsupported",
[81] = "shared read-write unit access unsupported",
[82] = "incoming rscn",
[83] = "incoming wwpn",
[84] = "",
[85] = "online",
[86] = "offline",
[87] = "ccw device gone",
[88] = "ccw device no path",
[89] = "ccw device operational",
[90] = "ccw device shutdown",
[91] = "sysfs port addition",
[92] = "sysfs port removal",
[93] = "sysfs adapter recovery",
[94] = "sysfs unit addition",
[95] = "sysfs unit removal",
[96] = "sysfs port recovery",
[97] = "sysfs unit recovery",
[98] = "sequence number mismatch",
[99] = "link up",
[100] = "error state",
[101] = "status read physical port closed",
[102] = "link up status read",
[103] = "too many failed status read buffers",
[104] = "port handle not valid abort",
[105] = "lun handle not valid abort",
[106] = "port handle not valid ct",
[107] = "port handle not valid close port",
[108] = "port handle not valid close physical port",
[109] = "port handle not valid open unit",
[110] = "port handle not valid close unit",
[111] = "lun handle not valid close unit",
[112] = "port handle not valid fcp",
[113] = "lun handle not valid fcp",
[114] = "handle mismatch fcp",
[115] = "lun not valid fcp",
[116] = "qdio send failed",
[117] = "version mismatch",
[118] = "incompatible qtcb type",
[119] = "unknown protocol status",
[120] = "unknown fsf command",
[121] = "no recommendation for status qualifier",
[122] = "status read physical port closed in error",
[123] = "fc service class not supported",
[124] = "",
[125] = "need newer zfcp",
[126] = "need newer microcode",
[127] = "arbitrated loop not supported",
[128] = "",
[129] = "qtcb size mismatch",
[130] = "unknown fsf status ecd",
[131] = "fcp request too big",
[132] = "",
[133] = "data direction not valid fcp",
[134] = "command length not valid fcp",
[135] = "status read act update",
[136] = "status read cfdc update",
[137] = "hbaapi port open",
[138] = "hbaapi unit open",
[139] = "hbaapi unit shutdown",
[140] = "qdio error outbound",
[141] = "scsi host reset",
[142] = "dismissing fsf request for recovery action",
[143] = "recovery action timed out",
[144] = "recovery action gone",
[145] = "recovery action being processed",
[146] = "recovery action ready for next step",
[147] = "qdio error inbound",
[148] = "nameserver needed for port scan",
[149] = "port scan",
[150] = "ptp attach",
[151] = "port validation failed",
};
static int zfcp_rec_dbf_view_format(debug_info_t *id, struct debug_view *view,
char *buf, const char *_rec)
{
struct zfcp_rec_dbf_record *r = (struct zfcp_rec_dbf_record *)_rec;
char *p = buf;
zfcp_dbf_outs(&p, "tag", zfcp_rec_dbf_tags[r->id]);
zfcp_dbf_outs(&p, "hint", zfcp_rec_dbf_ids[r->id2]);
zfcp_dbf_out(&p, "id", "%d", r->id2);
switch (r->id) {
case ZFCP_REC_DBF_ID_THREAD:
zfcp_dbf_out(&p, "total", "%d", r->u.thread.total);
zfcp_dbf_out(&p, "ready", "%d", r->u.thread.ready);
zfcp_dbf_out(&p, "running", "%d", r->u.thread.running);
break;
case ZFCP_REC_DBF_ID_TARGET:
zfcp_dbf_out(&p, "reference", "0x%016Lx", r->u.target.ref);
zfcp_dbf_out(&p, "status", "0x%08x", r->u.target.status);
zfcp_dbf_out(&p, "erp_count", "%d", r->u.target.erp_count);
zfcp_dbf_out(&p, "d_id", "0x%06x", r->u.target.d_id);
zfcp_dbf_out(&p, "wwpn", "0x%016Lx", r->u.target.wwpn);
zfcp_dbf_out(&p, "fcp_lun", "0x%016Lx", r->u.target.fcp_lun);
break;
case ZFCP_REC_DBF_ID_TRIGGER:
zfcp_dbf_out(&p, "reference", "0x%016Lx", r->u.trigger.ref);
zfcp_dbf_out(&p, "erp_action", "0x%016Lx", r->u.trigger.action);
zfcp_dbf_out(&p, "requested", "%d", r->u.trigger.want);
zfcp_dbf_out(&p, "executed", "%d", r->u.trigger.need);
zfcp_dbf_out(&p, "wwpn", "0x%016Lx", r->u.trigger.wwpn);
zfcp_dbf_out(&p, "fcp_lun", "0x%016Lx", r->u.trigger.fcp_lun);
zfcp_dbf_out(&p, "adapter_status", "0x%08x", r->u.trigger.as);
zfcp_dbf_out(&p, "port_status", "0x%08x", r->u.trigger.ps);
zfcp_dbf_out(&p, "unit_status", "0x%08x", r->u.trigger.us);
break;
case ZFCP_REC_DBF_ID_ACTION:
zfcp_dbf_out(&p, "erp_action", "0x%016Lx", r->u.action.action);
zfcp_dbf_out(&p, "fsf_req", "0x%016Lx", r->u.action.fsf_req);
zfcp_dbf_out(&p, "status", "0x%08Lx", r->u.action.status);
zfcp_dbf_out(&p, "step", "0x%08Lx", r->u.action.step);
break;
}
p += sprintf(p, "\n");
return p - buf;
}
static struct debug_view zfcp_rec_dbf_view = {
"structured",
NULL,
&zfcp_dbf_view_header,
&zfcp_rec_dbf_view_format,
NULL,
NULL
};
/**
* zfcp_rec_dbf_event_thread - trace event related to recovery thread operation
* @id2: identifier for event
* @adapter: adapter
* This function assumes that the caller is holding erp_lock.
*/
void zfcp_rec_dbf_event_thread(u8 id2, struct zfcp_adapter *adapter)
{
struct zfcp_rec_dbf_record *r = &adapter->rec_dbf_buf;
unsigned long flags = 0;
struct list_head *entry;
unsigned ready = 0, running = 0, total;
list_for_each(entry, &adapter->erp_ready_head)
ready++;
list_for_each(entry, &adapter->erp_running_head)
running++;
total = adapter->erp_total_count;
spin_lock_irqsave(&adapter->rec_dbf_lock, flags);
memset(r, 0, sizeof(*r));
r->id = ZFCP_REC_DBF_ID_THREAD;
r->id2 = id2;
r->u.thread.total = total;
r->u.thread.ready = ready;
r->u.thread.running = running;
debug_event(adapter->rec_dbf, 6, r, sizeof(*r));
spin_unlock_irqrestore(&adapter->rec_dbf_lock, flags);
}
/**
* zfcp_rec_dbf_event_thread - trace event related to recovery thread operation
* @id2: identifier for event
* @adapter: adapter
* This function assumes that the caller does not hold erp_lock.
*/
void zfcp_rec_dbf_event_thread_lock(u8 id2, struct zfcp_adapter *adapter)
{
unsigned long flags;
read_lock_irqsave(&adapter->erp_lock, flags);
zfcp_rec_dbf_event_thread(id2, adapter);
read_unlock_irqrestore(&adapter->erp_lock, flags);
}
static void zfcp_rec_dbf_event_target(u8 id2, void *ref,
struct zfcp_adapter *adapter,
atomic_t *status, atomic_t *erp_count,
u64 wwpn, u32 d_id, u64 fcp_lun)
{
struct zfcp_rec_dbf_record *r = &adapter->rec_dbf_buf;
unsigned long flags;
spin_lock_irqsave(&adapter->rec_dbf_lock, flags);
memset(r, 0, sizeof(*r));
r->id = ZFCP_REC_DBF_ID_TARGET;
r->id2 = id2;
r->u.target.ref = (unsigned long)ref;
r->u.target.status = atomic_read(status);
r->u.target.wwpn = wwpn;
r->u.target.d_id = d_id;
r->u.target.fcp_lun = fcp_lun;
r->u.target.erp_count = atomic_read(erp_count);
debug_event(adapter->rec_dbf, 3, r, sizeof(*r));
spin_unlock_irqrestore(&adapter->rec_dbf_lock, flags);
}
/**
* zfcp_rec_dbf_event_adapter - trace event for adapter state change
* @id: identifier for trigger of state change
* @ref: additional reference (e.g. request)
* @adapter: adapter
*/
void zfcp_rec_dbf_event_adapter(u8 id, void *ref, struct zfcp_adapter *adapter)
{
zfcp_rec_dbf_event_target(id, ref, adapter, &adapter->status,
&adapter->erp_counter, 0, 0, 0);
}
/**
* zfcp_rec_dbf_event_port - trace event for port state change
* @id: identifier for trigger of state change
* @ref: additional reference (e.g. request)
* @port: port
*/
void zfcp_rec_dbf_event_port(u8 id, void *ref, struct zfcp_port *port)
{
struct zfcp_adapter *adapter = port->adapter;
zfcp_rec_dbf_event_target(id, ref, adapter, &port->status,
&port->erp_counter, port->wwpn, port->d_id,
0);
}
/**
* zfcp_rec_dbf_event_unit - trace event for unit state change
* @id: identifier for trigger of state change
* @ref: additional reference (e.g. request)
* @unit: unit
*/
void zfcp_rec_dbf_event_unit(u8 id, void *ref, struct zfcp_unit *unit)
{
struct zfcp_port *port = unit->port;
struct zfcp_adapter *adapter = port->adapter;
zfcp_rec_dbf_event_target(id, ref, adapter, &unit->status,
&unit->erp_counter, port->wwpn, port->d_id,
unit->fcp_lun);
}
/**
* zfcp_rec_dbf_event_trigger - trace event for triggered error recovery
* @id2: identifier for error recovery trigger
* @ref: additional reference (e.g. request)
* @want: originally requested error recovery action
* @need: error recovery action actually initiated
* @action: address of error recovery action struct
* @adapter: adapter
* @port: port
* @unit: unit
*/
void zfcp_rec_dbf_event_trigger(u8 id2, void *ref, u8 want, u8 need,
void *action, struct zfcp_adapter *adapter,
struct zfcp_port *port, struct zfcp_unit *unit)
{
struct zfcp_rec_dbf_record *r = &adapter->rec_dbf_buf;
unsigned long flags;
spin_lock_irqsave(&adapter->rec_dbf_lock, flags);
memset(r, 0, sizeof(*r));
r->id = ZFCP_REC_DBF_ID_TRIGGER;
r->id2 = id2;
r->u.trigger.ref = (unsigned long)ref;
r->u.trigger.want = want;
r->u.trigger.need = need;
r->u.trigger.action = (unsigned long)action;
r->u.trigger.as = atomic_read(&adapter->status);
if (port) {
r->u.trigger.ps = atomic_read(&port->status);
r->u.trigger.wwpn = port->wwpn;
}
if (unit) {
r->u.trigger.us = atomic_read(&unit->status);
r->u.trigger.fcp_lun = unit->fcp_lun;
}
debug_event(adapter->rec_dbf, action ? 1 : 4, r, sizeof(*r));
spin_unlock_irqrestore(&adapter->rec_dbf_lock, flags);
}
/**
* zfcp_rec_dbf_event_action - trace event showing progress of recovery action
* @id2: identifier
* @erp_action: error recovery action struct pointer
*/
void zfcp_rec_dbf_event_action(u8 id2, struct zfcp_erp_action *erp_action)
{
struct zfcp_adapter *adapter = erp_action->adapter;
struct zfcp_rec_dbf_record *r = &adapter->rec_dbf_buf;
unsigned long flags;
spin_lock_irqsave(&adapter->rec_dbf_lock, flags);
memset(r, 0, sizeof(*r));
r->id = ZFCP_REC_DBF_ID_ACTION;
r->id2 = id2;
r->u.action.action = (unsigned long)erp_action;
r->u.action.status = erp_action->status;
r->u.action.step = erp_action->step;
r->u.action.fsf_req = (unsigned long)erp_action->fsf_req;
debug_event(adapter->rec_dbf, 5, r, sizeof(*r));
spin_unlock_irqrestore(&adapter->rec_dbf_lock, flags);
}
/**
* zfcp_san_dbf_event_ct_request - trace event for issued CT request
* @fsf_req: request containing issued CT data
*/
void zfcp_san_dbf_event_ct_request(struct zfcp_fsf_req *fsf_req)
{
struct zfcp_send_ct *ct = (struct zfcp_send_ct *)fsf_req->data;
struct zfcp_wka_port *wka_port = ct->wka_port;
struct zfcp_adapter *adapter = wka_port->adapter;
struct ct_hdr *hdr = sg_virt(ct->req);
struct zfcp_san_dbf_record *r = &adapter->san_dbf_buf;
struct zfcp_san_dbf_record_ct_request *oct = &r->u.ct_req;
unsigned long flags;
spin_lock_irqsave(&adapter->san_dbf_lock, flags);
memset(r, 0, sizeof(*r));
strncpy(r->tag, "octc", ZFCP_DBF_TAG_SIZE);
r->fsf_reqid = (unsigned long)fsf_req;
r->fsf_seqno = fsf_req->seq_no;
r->s_id = fc_host_port_id(adapter->scsi_host);
r->d_id = wka_port->d_id;
oct->cmd_req_code = hdr->cmd_rsp_code;
oct->revision = hdr->revision;
oct->gs_type = hdr->gs_type;
oct->gs_subtype = hdr->gs_subtype;
oct->options = hdr->options;
oct->max_res_size = hdr->max_res_size;
oct->len = min((int)ct->req->length - (int)sizeof(struct ct_hdr),
ZFCP_DBF_CT_PAYLOAD);
memcpy(oct->payload, (void *)hdr + sizeof(struct ct_hdr), oct->len);
debug_event(adapter->san_dbf, 3, r, sizeof(*r));
spin_unlock_irqrestore(&adapter->san_dbf_lock, flags);
}
/**
* 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_wka_port *wka_port = ct->wka_port;
struct zfcp_adapter *adapter = wka_port->adapter;
struct ct_hdr *hdr = sg_virt(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 = wka_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);
}
static void zfcp_san_dbf_event_els(const char *tag, int level,
struct zfcp_fsf_req *fsf_req, u32 s_id,
u32 d_id, u8 ls_code, void *buffer,
int buflen)
{
struct zfcp_adapter *adapter = fsf_req->adapter;
struct zfcp_san_dbf_record *rec = &adapter->san_dbf_buf;
unsigned long flags;
spin_lock_irqsave(&adapter->san_dbf_lock, flags);
memset(rec, 0, sizeof(*rec));
strncpy(rec->tag, tag, ZFCP_DBF_TAG_SIZE);
rec->fsf_reqid = (unsigned long)fsf_req;
rec->fsf_seqno = fsf_req->seq_no;
rec->s_id = s_id;
rec->d_id = d_id;
rec->u.els.ls_code = ls_code;
debug_event(adapter->san_dbf, level, rec, sizeof(*rec));
zfcp_dbf_hexdump(adapter->san_dbf, rec, sizeof(*rec), level,
buffer, min(buflen, ZFCP_DBF_ELS_MAX_PAYLOAD));
spin_unlock_irqrestore(&adapter->san_dbf_lock, flags);
}
/**
* 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 *) sg_virt(els->req),
sg_virt(els->req), els->req->length);
}
/**
* zfcp_san_dbf_event_els_response - trace event for completed ELS
* @fsf_req: request containing ELS response
*/
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_els("rels", 2, fsf_req, els->d_id,
fc_host_port_id(els->adapter->scsi_host),
*(u8 *)sg_virt(els->req), sg_virt(els->resp),
els->resp->length);
}
/**
* zfcp_san_dbf_event_incoming_els - trace event for incomig ELS
* @fsf_req: request containing unsolicited status buffer with incoming ELS
*/
void zfcp_san_dbf_event_incoming_els(struct zfcp_fsf_req *fsf_req)
{
struct zfcp_adapter *adapter = fsf_req->adapter;
struct fsf_status_read_buffer *buf =
(struct fsf_status_read_buffer *)fsf_req->data;
int length = (int)buf->length -
(int)((void *)&buf->payload - (void *)buf);
zfcp_san_dbf_event_els("iels", 1, fsf_req, buf->d_id,
fc_host_port_id(adapter->scsi_host),
buf->payload.data[0], (void *)buf->payload.data,
length);
}
static int zfcp_san_dbf_view_format(debug_info_t *id, struct debug_view *view,
char *out_buf, const char *in_buf)
{
struct zfcp_san_dbf_record *r = (struct zfcp_san_dbf_record *)in_buf;
char *buffer = NULL;
int buflen = 0, total = 0;
char *p = out_buf;
if (strncmp(r->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0)
return 0;
zfcp_dbf_tag(&p, "tag", r->tag);
zfcp_dbf_out(&p, "fsf_reqid", "0x%0Lx", r->fsf_reqid);
zfcp_dbf_out(&p, "fsf_seqno", "0x%08x", r->fsf_seqno);
zfcp_dbf_out(&p, "s_id", "0x%06x", r->s_id);
zfcp_dbf_out(&p, "d_id", "0x%06x", r->d_id);
if (strncmp(r->tag, "octc", ZFCP_DBF_TAG_SIZE) == 0) {
struct zfcp_san_dbf_record_ct_request *ct = &r->u.ct_req;
zfcp_dbf_out(&p, "cmd_req_code", "0x%04x", ct->cmd_req_code);
zfcp_dbf_out(&p, "revision", "0x%02x", ct->revision);
zfcp_dbf_out(&p, "gs_type", "0x%02x", ct->gs_type);
zfcp_dbf_out(&p, "gs_subtype", "0x%02x", ct->gs_subtype);
zfcp_dbf_out(&p, "options", "0x%02x", ct->options);
zfcp_dbf_out(&p, "max_res_size", "0x%04x", ct->max_res_size);
total = ct->len;
buffer = ct->payload;
buflen = min(total, ZFCP_DBF_CT_PAYLOAD);
} else if (strncmp(r->tag, "rctc", ZFCP_DBF_TAG_SIZE) == 0) {
struct zfcp_san_dbf_record_ct_response *ct = &r->u.ct_resp;
zfcp_dbf_out(&p, "cmd_rsp_code", "0x%04x", ct->cmd_rsp_code);
zfcp_dbf_out(&p, "revision", "0x%02x", ct->revision);
zfcp_dbf_out(&p, "reason_code", "0x%02x", ct->reason_code);
zfcp_dbf_out(&p, "reason_code_expl", "0x%02x", ct->expl);
zfcp_dbf_out(&p, "vendor_unique", "0x%02x", ct->vendor_unique);
total = ct->len;
buffer = ct->payload;
buflen = min(total, ZFCP_DBF_CT_PAYLOAD);
} else if (strncmp(r->tag, "oels", ZFCP_DBF_TAG_SIZE) == 0 ||
strncmp(r->tag, "rels", ZFCP_DBF_TAG_SIZE) == 0 ||
strncmp(r->tag, "iels", ZFCP_DBF_TAG_SIZE) == 0) {
struct zfcp_san_dbf_record_els *els = &r->u.els;
zfcp_dbf_out(&p, "ls_code", "0x%02x", els->ls_code);
total = els->len;
buffer = els->payload;
buflen = min(total, ZFCP_DBF_ELS_PAYLOAD);
}
zfcp_dbf_outd(&p, "payload", buffer, buflen, 0, total);
if (buflen == total)
p += sprintf(p, "\n");
return p - out_buf;
}
static struct debug_view zfcp_san_dbf_view = {
"structured",
NULL,
&zfcp_dbf_view_header,
&zfcp_san_dbf_view_format,
NULL,
NULL
};
static void zfcp_scsi_dbf_event(const char *tag, const char *tag2, int level,
struct zfcp_adapter *adapter,
struct scsi_cmnd *scsi_cmnd,
struct zfcp_fsf_req *fsf_req,
unsigned long old_req_id)
{
struct zfcp_scsi_dbf_record *rec = &adapter->scsi_dbf_buf;
struct zfcp_dbf_dump *dump = (struct zfcp_dbf_dump *)rec;
unsigned long flags;
struct fcp_rsp_iu *fcp_rsp;
char *fcp_rsp_info = NULL, *fcp_sns_info = NULL;
int offset = 0, buflen = 0;
spin_lock_irqsave(&adapter->scsi_dbf_lock, flags);
do {
memset(rec, 0, sizeof(*rec));
if (offset == 0) {
strncpy(rec->tag, tag, ZFCP_DBF_TAG_SIZE);
strncpy(rec->tag2, tag2, ZFCP_DBF_TAG_SIZE);
if (scsi_cmnd != NULL) {
if (scsi_cmnd->device) {
rec->scsi_id = scsi_cmnd->device->id;
rec->scsi_lun = scsi_cmnd->device->lun;
}
rec->scsi_result = scsi_cmnd->result;
rec->scsi_cmnd = (unsigned long)scsi_cmnd;
rec->scsi_serial = scsi_cmnd->serial_number;
memcpy(rec->scsi_opcode, scsi_cmnd->cmnd,
min((int)scsi_cmnd->cmd_len,
ZFCP_DBF_SCSI_OPCODE));
rec->scsi_retries = scsi_cmnd->retries;
rec->scsi_allowed = scsi_cmnd->allowed;
}
if (fsf_req != NULL) {
fcp_rsp = (struct fcp_rsp_iu *)
&(fsf_req->qtcb->bottom.io.fcp_rsp);
fcp_rsp_info = (unsigned char *) &fcp_rsp[1];
fcp_sns_info =
zfcp_get_fcp_sns_info_ptr(fcp_rsp);
rec->rsp_validity = fcp_rsp->validity.value;
rec->rsp_scsi_status = fcp_rsp->scsi_status;
rec->rsp_resid = fcp_rsp->fcp_resid;
if (fcp_rsp->validity.bits.fcp_rsp_len_valid)
rec->rsp_code = *(fcp_rsp_info + 3);
if (fcp_rsp->validity.bits.fcp_sns_len_valid) {
buflen = min((int)fcp_rsp->fcp_sns_len,
ZFCP_DBF_SCSI_MAX_FCP_SNS_INFO);
rec->sns_info_len = buflen;
memcpy(rec->sns_info, fcp_sns_info,
min(buflen,
ZFCP_DBF_SCSI_FCP_SNS_INFO));
offset += min(buflen,
ZFCP_DBF_SCSI_FCP_SNS_INFO);
}
rec->fsf_reqid = (unsigned long)fsf_req;
rec->fsf_seqno = fsf_req->seq_no;
rec->fsf_issued = fsf_req->issued;
}
rec->old_fsf_reqid = old_req_id;
} else {
strncpy(dump->tag, "dump", ZFCP_DBF_TAG_SIZE);
dump->total_size = buflen;
dump->offset = offset;
dump->size = min(buflen - offset,
(int)sizeof(struct
zfcp_scsi_dbf_record) -
(int)sizeof(struct zfcp_dbf_dump));
memcpy(dump->data, fcp_sns_info + offset, dump->size);
offset += dump->size;
}
debug_event(adapter->scsi_dbf, level, rec, sizeof(*rec));
} while (offset < buflen);
spin_unlock_irqrestore(&adapter->scsi_dbf_lock, flags);
}
/**
* zfcp_scsi_dbf_event_result - trace event for SCSI command completion
* @tag: tag indicating success or failure of SCSI command
* @level: trace level applicable for this event
* @adapter: adapter that has been used to issue the SCSI command
* @scsi_cmnd: SCSI command pointer
* @fsf_req: request used to issue SCSI command (might be NULL)
*/
void zfcp_scsi_dbf_event_result(const char *tag, int level,
struct zfcp_adapter *adapter,
struct scsi_cmnd *scsi_cmnd,
struct zfcp_fsf_req *fsf_req)
{
zfcp_scsi_dbf_event("rslt", tag, level, adapter, scsi_cmnd, fsf_req, 0);
}
/**
* zfcp_scsi_dbf_event_abort - trace event for SCSI command abort
* @tag: tag indicating success or failure of abort operation
* @adapter: adapter thas has been used to issue SCSI command to be aborted
* @scsi_cmnd: SCSI command to be aborted
* @new_fsf_req: request containing abort (might be NULL)
* @old_req_id: identifier of request containg SCSI command to be aborted
*/
void zfcp_scsi_dbf_event_abort(const char *tag, struct zfcp_adapter *adapter,
struct scsi_cmnd *scsi_cmnd,
struct zfcp_fsf_req *new_fsf_req,
unsigned long old_req_id)
{
zfcp_scsi_dbf_event("abrt", tag, 1, adapter, scsi_cmnd, new_fsf_req,
old_req_id);
}
/**
* zfcp_scsi_dbf_event_devreset - trace event for Logical Unit or Target Reset
* @tag: tag indicating success or failure of reset operation
* @flag: indicates type of reset (Target Reset, Logical Unit Reset)
* @unit: unit that needs reset
* @scsi_cmnd: SCSI command which caused this error recovery
*/
void zfcp_scsi_dbf_event_devreset(const char *tag, u8 flag,
struct zfcp_unit *unit,
struct scsi_cmnd *scsi_cmnd)
{
zfcp_scsi_dbf_event(flag == FCP_TARGET_RESET ? "trst" : "lrst", tag, 1,
unit->port->adapter, scsi_cmnd, NULL, 0);
}
static int zfcp_scsi_dbf_view_format(debug_info_t *id, struct debug_view *view,
char *out_buf, const char *in_buf)
{
struct zfcp_scsi_dbf_record *r = (struct zfcp_scsi_dbf_record *)in_buf;
struct timespec t;
char *p = out_buf;
if (strncmp(r->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0)
return 0;
zfcp_dbf_tag(&p, "tag", r->tag);
zfcp_dbf_tag(&p, "tag2", r->tag2);
zfcp_dbf_out(&p, "scsi_id", "0x%08x", r->scsi_id);
zfcp_dbf_out(&p, "scsi_lun", "0x%08x", r->scsi_lun);
zfcp_dbf_out(&p, "scsi_result", "0x%08x", r->scsi_result);
zfcp_dbf_out(&p, "scsi_cmnd", "0x%0Lx", r->scsi_cmnd);
zfcp_dbf_out(&p, "scsi_serial", "0x%016Lx", r->scsi_serial);
zfcp_dbf_outd(&p, "scsi_opcode", r->scsi_opcode, ZFCP_DBF_SCSI_OPCODE,
0, ZFCP_DBF_SCSI_OPCODE);
zfcp_dbf_out(&p, "scsi_retries", "0x%02x", r->scsi_retries);
zfcp_dbf_out(&p, "scsi_allowed", "0x%02x", r->scsi_allowed);
if (strncmp(r->tag, "abrt", ZFCP_DBF_TAG_SIZE) == 0)
zfcp_dbf_out(&p, "old_fsf_reqid", "0x%0Lx", r->old_fsf_reqid);
zfcp_dbf_out(&p, "fsf_reqid", "0x%0Lx", r->fsf_reqid);
zfcp_dbf_out(&p, "fsf_seqno", "0x%08x", r->fsf_seqno);
zfcp_dbf_timestamp(r->fsf_issued, &t);
zfcp_dbf_out(&p, "fsf_issued", "%011lu:%06lu", t.tv_sec, t.tv_nsec);
if (strncmp(r->tag, "rslt", ZFCP_DBF_TAG_SIZE) == 0) {
zfcp_dbf_out(&p, "fcp_rsp_validity", "0x%02x", r->rsp_validity);
zfcp_dbf_out(&p, "fcp_rsp_scsi_status", "0x%02x",
r->rsp_scsi_status);
zfcp_dbf_out(&p, "fcp_rsp_resid", "0x%08x", r->rsp_resid);
zfcp_dbf_out(&p, "fcp_rsp_code", "0x%08x", r->rsp_code);
zfcp_dbf_out(&p, "fcp_sns_info_len", "0x%08x", r->sns_info_len);
zfcp_dbf_outd(&p, "fcp_sns_info", r->sns_info,
min((int)r->sns_info_len,
ZFCP_DBF_SCSI_FCP_SNS_INFO), 0,
r->sns_info_len);
}
p += sprintf(p, "\n");
return p - out_buf;
}
static struct debug_view zfcp_scsi_dbf_view = {
"structured",
NULL,
&zfcp_dbf_view_header,
&zfcp_scsi_dbf_view_format,
NULL,
NULL
};
/**
* zfcp_adapter_debug_register - registers debug feature for an adapter
* @adapter: pointer to adapter for which debug features should be registered
* return: -ENOMEM on error, 0 otherwise
*/
int zfcp_adapter_debug_register(struct zfcp_adapter *adapter)
{
char dbf_name[DEBUG_MAX_NAME_LEN];
/* debug feature area which records recovery activity */
sprintf(dbf_name, "zfcp_%s_rec", zfcp_get_busid_by_adapter(adapter));
adapter->rec_dbf = debug_register(dbf_name, dbfsize, 1,
sizeof(struct zfcp_rec_dbf_record));
if (!adapter->rec_dbf)
goto failed;
debug_register_view(adapter->rec_dbf, &debug_hex_ascii_view);
debug_register_view(adapter->rec_dbf, &zfcp_rec_dbf_view);
debug_set_level(adapter->rec_dbf, 3);
/* debug feature area which records HBA (FSF and QDIO) conditions */
sprintf(dbf_name, "zfcp_%s_hba", zfcp_get_busid_by_adapter(adapter));
adapter->hba_dbf = debug_register(dbf_name, dbfsize, 1,
sizeof(struct zfcp_hba_dbf_record));
if (!adapter->hba_dbf)
goto failed;
debug_register_view(adapter->hba_dbf, &debug_hex_ascii_view);
debug_register_view(adapter->hba_dbf, &zfcp_hba_dbf_view);
debug_set_level(adapter->hba_dbf, 3);
/* debug feature area which records SAN command failures and recovery */
sprintf(dbf_name, "zfcp_%s_san", zfcp_get_busid_by_adapter(adapter));
adapter->san_dbf = debug_register(dbf_name, dbfsize, 1,
sizeof(struct zfcp_san_dbf_record));
if (!adapter->san_dbf)
goto failed;
debug_register_view(adapter->san_dbf, &debug_hex_ascii_view);
debug_register_view(adapter->san_dbf, &zfcp_san_dbf_view);
debug_set_level(adapter->san_dbf, 6);
/* debug feature area which records SCSI command failures and recovery */
sprintf(dbf_name, "zfcp_%s_scsi", zfcp_get_busid_by_adapter(adapter));
adapter->scsi_dbf = debug_register(dbf_name, dbfsize, 1,
sizeof(struct zfcp_scsi_dbf_record));
if (!adapter->scsi_dbf)
goto failed;
debug_register_view(adapter->scsi_dbf, &debug_hex_ascii_view);
debug_register_view(adapter->scsi_dbf, &zfcp_scsi_dbf_view);
debug_set_level(adapter->scsi_dbf, 3);
return 0;
failed:
zfcp_adapter_debug_unregister(adapter);
return -ENOMEM;
}
/**
* zfcp_adapter_debug_unregister - unregisters debug feature for an adapter
* @adapter: pointer to adapter for which debug features should be unregistered
*/
void zfcp_adapter_debug_unregister(struct zfcp_adapter *adapter)
{
debug_unregister(adapter->scsi_dbf);
debug_unregister(adapter->san_dbf);
debug_unregister(adapter->hba_dbf);
debug_unregister(adapter->rec_dbf);
adapter->scsi_dbf = NULL;
adapter->san_dbf = NULL;
adapter->hba_dbf = NULL;
adapter->rec_dbf = NULL;
}
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