mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-30 08:02:30 +00:00
d0dff2ac98
At the moment we allocate and register the Scsi_Host object corresponding to a zfcp adapter (FCP device) very early in the life cycle of the adapter - even before we fully discover and initialize the underlying firmware/hardware. This had the advantage that we could already use the Scsi_Host object, and fill in all its information during said discover and initialize. Due to commit737eb78e82
("block: Delay default elevator initialization") (first released in v5.4), we noticed a regression that would prevent us from using any storage volume if zfcp is configured with support for DIF or DIX (zfcp.dif=1 || zfcp.dix=1). Doing so would result in an illegal memory access as soon as the first request is sent with such an configuration. As example for a crash resulting from this: scsi host0: scsi_eh_0: sleeping scsi host0: zfcp qdio: 0.0.1900 ZFCP on SC 4bd using AI:1 QEBSM:0 PRI:1 TDD:1 SIGA: W AP scsi 0:0:0:0: scsi scan: INQUIRY pass 1 length 36 Unable to handle kernel pointer dereference in virtual kernel address space Failing address: 0000000000000000 TEID: 0000000000000483 Fault in home space mode while using kernel ASCE. AS:0000000035c7c007 R3:00000001effcc007 S:00000001effd1000 P:000000000000003d Oops: 0004 ilc:3 [#1] PREEMPT SMP DEBUG_PAGEALLOC Modules linked in: ... CPU: 1 PID: 783 Comm: kworker/u760:5 Kdump: loaded Not tainted 5.6.0-rc2-bb-next+ #1 Hardware name: ... Workqueue: scsi_wq_0 fc_scsi_scan_rport [scsi_transport_fc] Krnl PSW : 0704e00180000000 000003ff801fcdae (scsi_queue_rq+0x436/0x740 [scsi_mod]) R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:0 RI:0 EA:3 Krnl GPRS: 0fffffffffffffff 0000000000000000 0000000187150120 0000000000000000 000003ff80223d20 000000000000018e 000000018adc6400 0000000187711000 000003e0062337e8 00000001ae719000 0000000187711000 0000000187150000 00000001ab808100 0000000187150120 000003ff801fcd74 000003e0062336a0 Krnl Code: 000003ff801fcd9e: e310a35c0012 lt %r1,860(%r10) 000003ff801fcda4: a7840010 brc 8,000003ff801fcdc4 #000003ff801fcda8: e310b2900004 lg %r1,656(%r11) >000003ff801fcdae: d71710001000 xc 0(24,%r1),0(%r1) 000003ff801fcdb4: e310b2900004 lg %r1,656(%r11) 000003ff801fcdba: 41201018 la %r2,24(%r1) 000003ff801fcdbe: e32010000024 stg %r2,0(%r1) 000003ff801fcdc4: b904002b lgr %r2,%r11 Call Trace: [<000003ff801fcdae>] scsi_queue_rq+0x436/0x740 [scsi_mod] ([<000003ff801fcd74>] scsi_queue_rq+0x3fc/0x740 [scsi_mod]) [<00000000349c9970>] blk_mq_dispatch_rq_list+0x390/0x680 [<00000000349d1596>] blk_mq_sched_dispatch_requests+0x196/0x1a8 [<00000000349c7a04>] __blk_mq_run_hw_queue+0x144/0x160 [<00000000349c7ab6>] __blk_mq_delay_run_hw_queue+0x96/0x228 [<00000000349c7d5a>] blk_mq_run_hw_queue+0xd2/0xe0 [<00000000349d194a>] blk_mq_sched_insert_request+0x192/0x1d8 [<00000000349c17b8>] blk_execute_rq_nowait+0x80/0x90 [<00000000349c1856>] blk_execute_rq+0x6e/0xb0 [<000003ff801f8ac2>] __scsi_execute+0xe2/0x1f0 [scsi_mod] [<000003ff801fef98>] scsi_probe_and_add_lun+0x358/0x840 [scsi_mod] [<000003ff8020001c>] __scsi_scan_target+0xc4/0x228 [scsi_mod] [<000003ff80200254>] scsi_scan_target+0xd4/0x100 [scsi_mod] [<000003ff802d8b96>] fc_scsi_scan_rport+0x96/0xc0 [scsi_transport_fc] [<0000000034245ce8>] process_one_work+0x458/0x7d0 [<00000000342462a2>] worker_thread+0x242/0x448 [<0000000034250994>] kthread+0x15c/0x170 [<0000000034e1979c>] ret_from_fork+0x30/0x38 INFO: lockdep is turned off. Last Breaking-Event-Address: [<000003ff801fbc36>] scsi_add_cmd_to_list+0x9e/0xa8 [scsi_mod] Kernel panic - not syncing: Fatal exception: panic_on_oops While this issue is exposed by the commit named above, this is only by accident. The real issue exists for longer already - basically since it's possible to use blk-mq via scsi-mq, and blk-mq pre-allocates all requests for a tag-set during initialization of the same. For a given Scsi_Host object this is done when adding the object to the midlayer (`scsi_add_host()` and such). In `scsi_mq_setup_tags()` the midlayer calculates how much memory is required for a single scsi_cmnd, and its additional data, which also might include space for additional protection data - depending on whether the Scsi_Host has any form of protection capabilities (`scsi_host_get_prot()`). The problem is now thus, because zfcp does this step before we actually know whether the firmware/hardware has these capabilities, we don't set any protection capabilities in the Scsi_Host object. And so, no space is allocated for additional protection data for requests in the Scsi_Host tag-set. Once we go through discover and initialize the FCP device firmware/hardware fully (this is done via the firmware commands "Exchange Config Data" and "Exchange Port Data") we find out whether it actually supports DIF and DIX, and we set the corresponding capabilities in the Scsi_Host object (in `zfcp_scsi_set_prot()`). Now the Scsi_Host potentially has protection capabilities, but the already allocated requests in the tag-set don't have any space allocated for that. When we then trigger target scanning or add scsi_devices manually, the midlayer will use requests from that tag-set, and before sending most requests, it will also call `scsi_mq_prep_fn()`. To prepare the scsi_cmnd this function will check again whether the used Scsi_Host has any protection capabilities - and now it potentially has - and if so, it will try to initialize the assumed to be preallocated structures and thus it causes the crash, like shown above. Before delaying the default elevator initialization with the commit named above, we always would also allocate an elevator for any scsi_device before ever sending any requests - in contrast to now, where we do it after device-probing. That elevator in turn would have its own tag-set, and that is initialized after we went through discovery and initialization of the underlying firmware/hardware. So requests from that tag-set can be allocated properly, and if used - unless the user changes/disabled the default elevator - this would hide the underlying issue. To fix this for any configuration - with or without an elevator - we move the allocation and registration of the Scsi_Host object for a given FCP device to after the first complete discovery and initialization of the underlying firmware/hardware. By doing that we can make all basic properties of the Scsi_Host known to the midlayer by the time we call `scsi_add_host()`, including whether we have any protection capabilities. To do that we have to delay all the accesses that we would have done in the past during discovery and initialization, and do them instead once we are finished with it. The previous patches ramp up to this by fencing and factoring out all these accesses, and make it possible to re-do them later on. In addition we make also use of the diagnostic buffers we recently added with commit92953c6e0a
("scsi: zfcp: signal incomplete or error for sync exchange config/port data") commit7e418833e6
("scsi: zfcp: diagnostics buffer caching and use for exchange port data") commit088210233e
("scsi: zfcp: add diagnostics buffer for exchange config data") (first released in v5.5), because these already cache all the information we need for that "re-do operation" - the information cached are always updated during xconf or xport data, so it won't be stale. In addition to the move and re-do, this patch also updates the function-documentation of `zfcp_scsi_adapter_register()` and changes how it reports if a Scsi_Host object already exists. In that case future recovery-operations can skip this step completely and behave much like they would do in the past - zfcp does not release a once allocated Scsi_Host object unless the corresponding FCP device is deconstructed completely. Link: https://lore.kernel.org/r/030dd6da318bbb529f0b5268ec65cebcd20fc0a3.1588956679.git.bblock@linux.ibm.com Reviewed-by: Steffen Maier <maier@linux.ibm.com> Signed-off-by: Benjamin Block <bblock@linux.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
991 lines
29 KiB
C
991 lines
29 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* zfcp device driver
|
|
*
|
|
* Interface to Linux SCSI midlayer.
|
|
*
|
|
* Copyright IBM Corp. 2002, 2020
|
|
*/
|
|
|
|
#define KMSG_COMPONENT "zfcp"
|
|
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/types.h>
|
|
#include <linux/slab.h>
|
|
#include <scsi/fc/fc_fcp.h>
|
|
#include <scsi/scsi_eh.h>
|
|
#include <linux/atomic.h>
|
|
#include "zfcp_ext.h"
|
|
#include "zfcp_dbf.h"
|
|
#include "zfcp_fc.h"
|
|
#include "zfcp_reqlist.h"
|
|
|
|
static unsigned int default_depth = 32;
|
|
module_param_named(queue_depth, default_depth, uint, 0600);
|
|
MODULE_PARM_DESC(queue_depth, "Default queue depth for new SCSI devices");
|
|
|
|
static bool enable_dif;
|
|
module_param_named(dif, enable_dif, bool, 0400);
|
|
MODULE_PARM_DESC(dif, "Enable DIF data integrity support (default off)");
|
|
|
|
bool zfcp_experimental_dix;
|
|
module_param_named(dix, zfcp_experimental_dix, bool, 0400);
|
|
MODULE_PARM_DESC(dix, "Enable experimental DIX (data integrity extension) support which implies DIF support (default off)");
|
|
|
|
static bool allow_lun_scan = true;
|
|
module_param(allow_lun_scan, bool, 0600);
|
|
MODULE_PARM_DESC(allow_lun_scan, "For NPIV, scan and attach all storage LUNs");
|
|
|
|
static void zfcp_scsi_slave_destroy(struct scsi_device *sdev)
|
|
{
|
|
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
|
|
|
|
/* if previous slave_alloc returned early, there is nothing to do */
|
|
if (!zfcp_sdev->port)
|
|
return;
|
|
|
|
zfcp_erp_lun_shutdown_wait(sdev, "scssd_1");
|
|
put_device(&zfcp_sdev->port->dev);
|
|
}
|
|
|
|
static int zfcp_scsi_slave_configure(struct scsi_device *sdp)
|
|
{
|
|
if (sdp->tagged_supported)
|
|
scsi_change_queue_depth(sdp, default_depth);
|
|
return 0;
|
|
}
|
|
|
|
static void zfcp_scsi_command_fail(struct scsi_cmnd *scpnt, int result)
|
|
{
|
|
set_host_byte(scpnt, result);
|
|
zfcp_dbf_scsi_fail_send(scpnt);
|
|
scpnt->scsi_done(scpnt);
|
|
}
|
|
|
|
static
|
|
int zfcp_scsi_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *scpnt)
|
|
{
|
|
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device);
|
|
struct fc_rport *rport = starget_to_rport(scsi_target(scpnt->device));
|
|
int status, scsi_result, ret;
|
|
|
|
/* reset the status for this request */
|
|
scpnt->result = 0;
|
|
scpnt->host_scribble = NULL;
|
|
|
|
scsi_result = fc_remote_port_chkready(rport);
|
|
if (unlikely(scsi_result)) {
|
|
scpnt->result = scsi_result;
|
|
zfcp_dbf_scsi_fail_send(scpnt);
|
|
scpnt->scsi_done(scpnt);
|
|
return 0;
|
|
}
|
|
|
|
status = atomic_read(&zfcp_sdev->status);
|
|
if (unlikely(status & ZFCP_STATUS_COMMON_ERP_FAILED) &&
|
|
!(atomic_read(&zfcp_sdev->port->status) &
|
|
ZFCP_STATUS_COMMON_ERP_FAILED)) {
|
|
/* only LUN access denied, but port is good
|
|
* not covered by FC transport, have to fail here */
|
|
zfcp_scsi_command_fail(scpnt, DID_ERROR);
|
|
return 0;
|
|
}
|
|
|
|
if (unlikely(!(status & ZFCP_STATUS_COMMON_UNBLOCKED))) {
|
|
/* This could be
|
|
* call to rport_delete pending: mimic retry from
|
|
* fc_remote_port_chkready until rport is BLOCKED
|
|
*/
|
|
zfcp_scsi_command_fail(scpnt, DID_IMM_RETRY);
|
|
return 0;
|
|
}
|
|
|
|
ret = zfcp_fsf_fcp_cmnd(scpnt);
|
|
if (unlikely(ret == -EBUSY))
|
|
return SCSI_MLQUEUE_DEVICE_BUSY;
|
|
else if (unlikely(ret < 0))
|
|
return SCSI_MLQUEUE_HOST_BUSY;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int zfcp_scsi_slave_alloc(struct scsi_device *sdev)
|
|
{
|
|
struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
|
|
struct zfcp_adapter *adapter =
|
|
(struct zfcp_adapter *) sdev->host->hostdata[0];
|
|
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
|
|
struct zfcp_port *port;
|
|
struct zfcp_unit *unit;
|
|
int npiv = adapter->connection_features & FSF_FEATURE_NPIV_MODE;
|
|
|
|
zfcp_sdev->erp_action.adapter = adapter;
|
|
zfcp_sdev->erp_action.sdev = sdev;
|
|
|
|
port = zfcp_get_port_by_wwpn(adapter, rport->port_name);
|
|
if (!port)
|
|
return -ENXIO;
|
|
|
|
zfcp_sdev->erp_action.port = port;
|
|
|
|
mutex_lock(&zfcp_sysfs_port_units_mutex);
|
|
if (zfcp_sysfs_port_is_removing(port)) {
|
|
/* port is already gone */
|
|
mutex_unlock(&zfcp_sysfs_port_units_mutex);
|
|
put_device(&port->dev); /* undo zfcp_get_port_by_wwpn() */
|
|
return -ENXIO;
|
|
}
|
|
mutex_unlock(&zfcp_sysfs_port_units_mutex);
|
|
|
|
unit = zfcp_unit_find(port, zfcp_scsi_dev_lun(sdev));
|
|
if (unit)
|
|
put_device(&unit->dev);
|
|
|
|
if (!unit && !(allow_lun_scan && npiv)) {
|
|
put_device(&port->dev);
|
|
return -ENXIO;
|
|
}
|
|
|
|
zfcp_sdev->port = port;
|
|
zfcp_sdev->latencies.write.channel.min = 0xFFFFFFFF;
|
|
zfcp_sdev->latencies.write.fabric.min = 0xFFFFFFFF;
|
|
zfcp_sdev->latencies.read.channel.min = 0xFFFFFFFF;
|
|
zfcp_sdev->latencies.read.fabric.min = 0xFFFFFFFF;
|
|
zfcp_sdev->latencies.cmd.channel.min = 0xFFFFFFFF;
|
|
zfcp_sdev->latencies.cmd.fabric.min = 0xFFFFFFFF;
|
|
spin_lock_init(&zfcp_sdev->latencies.lock);
|
|
|
|
zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING);
|
|
zfcp_erp_lun_reopen(sdev, 0, "scsla_1");
|
|
zfcp_erp_wait(port->adapter);
|
|
|
|
return 0;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
struct zfcp_scsi_req_filter {
|
|
u8 tmf_scope;
|
|
u32 lun_handle;
|
|
u32 port_handle;
|
|
};
|
|
|
|
static void zfcp_scsi_forget_cmnd(struct zfcp_fsf_req *old_req, void *data)
|
|
{
|
|
struct zfcp_scsi_req_filter *filter =
|
|
(struct zfcp_scsi_req_filter *)data;
|
|
|
|
/* already aborted - prevent side-effects - or not a SCSI command */
|
|
if (old_req->data == NULL ||
|
|
zfcp_fsf_req_is_status_read_buffer(old_req) ||
|
|
old_req->qtcb->header.fsf_command != FSF_QTCB_FCP_CMND)
|
|
return;
|
|
|
|
/* (tmf_scope == FCP_TMF_TGT_RESET || tmf_scope == FCP_TMF_LUN_RESET) */
|
|
if (old_req->qtcb->header.port_handle != filter->port_handle)
|
|
return;
|
|
|
|
if (filter->tmf_scope == FCP_TMF_LUN_RESET &&
|
|
old_req->qtcb->header.lun_handle != filter->lun_handle)
|
|
return;
|
|
|
|
zfcp_dbf_scsi_nullcmnd((struct scsi_cmnd *)old_req->data, old_req);
|
|
old_req->data = NULL;
|
|
}
|
|
|
|
static void zfcp_scsi_forget_cmnds(struct zfcp_scsi_dev *zsdev, u8 tm_flags)
|
|
{
|
|
struct zfcp_adapter *adapter = zsdev->port->adapter;
|
|
struct zfcp_scsi_req_filter filter = {
|
|
.tmf_scope = FCP_TMF_TGT_RESET,
|
|
.port_handle = zsdev->port->handle,
|
|
};
|
|
unsigned long flags;
|
|
|
|
if (tm_flags == FCP_TMF_LUN_RESET) {
|
|
filter.tmf_scope = FCP_TMF_LUN_RESET;
|
|
filter.lun_handle = zsdev->lun_handle;
|
|
}
|
|
|
|
/*
|
|
* abort_lock secures against other processings - in the abort-function
|
|
* and normal cmnd-handler - of (struct zfcp_fsf_req *)->data
|
|
*/
|
|
write_lock_irqsave(&adapter->abort_lock, flags);
|
|
zfcp_reqlist_apply_for_all(adapter->req_list, zfcp_scsi_forget_cmnd,
|
|
&filter);
|
|
write_unlock_irqrestore(&adapter->abort_lock, flags);
|
|
}
|
|
|
|
/**
|
|
* zfcp_scsi_task_mgmt_function() - Send a task management function (sync).
|
|
* @sdev: Pointer to SCSI device to send the task management command to.
|
|
* @tm_flags: Task management flags,
|
|
* here we only handle %FCP_TMF_TGT_RESET or %FCP_TMF_LUN_RESET.
|
|
*/
|
|
static int zfcp_scsi_task_mgmt_function(struct scsi_device *sdev, u8 tm_flags)
|
|
{
|
|
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
|
|
struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
|
|
struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
|
|
struct zfcp_fsf_req *fsf_req = NULL;
|
|
int retval = SUCCESS, ret;
|
|
int retry = 3;
|
|
|
|
while (retry--) {
|
|
fsf_req = zfcp_fsf_fcp_task_mgmt(sdev, tm_flags);
|
|
if (fsf_req)
|
|
break;
|
|
|
|
zfcp_dbf_scsi_devreset("wait", sdev, tm_flags, NULL);
|
|
zfcp_erp_wait(adapter);
|
|
ret = fc_block_rport(rport);
|
|
if (ret) {
|
|
zfcp_dbf_scsi_devreset("fiof", sdev, tm_flags, NULL);
|
|
return ret;
|
|
}
|
|
|
|
if (!(atomic_read(&adapter->status) &
|
|
ZFCP_STATUS_COMMON_RUNNING)) {
|
|
zfcp_dbf_scsi_devreset("nres", sdev, tm_flags, NULL);
|
|
return SUCCESS;
|
|
}
|
|
}
|
|
if (!fsf_req) {
|
|
zfcp_dbf_scsi_devreset("reqf", sdev, tm_flags, NULL);
|
|
return FAILED;
|
|
}
|
|
|
|
wait_for_completion(&fsf_req->completion);
|
|
|
|
if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCFAILED) {
|
|
zfcp_dbf_scsi_devreset("fail", sdev, tm_flags, fsf_req);
|
|
retval = FAILED;
|
|
} else {
|
|
zfcp_dbf_scsi_devreset("okay", sdev, tm_flags, fsf_req);
|
|
zfcp_scsi_forget_cmnds(zfcp_sdev, tm_flags);
|
|
}
|
|
|
|
zfcp_fsf_req_free(fsf_req);
|
|
return retval;
|
|
}
|
|
|
|
static int zfcp_scsi_eh_device_reset_handler(struct scsi_cmnd *scpnt)
|
|
{
|
|
struct scsi_device *sdev = scpnt->device;
|
|
|
|
return zfcp_scsi_task_mgmt_function(sdev, FCP_TMF_LUN_RESET);
|
|
}
|
|
|
|
static int zfcp_scsi_eh_target_reset_handler(struct scsi_cmnd *scpnt)
|
|
{
|
|
struct scsi_target *starget = scsi_target(scpnt->device);
|
|
struct fc_rport *rport = starget_to_rport(starget);
|
|
struct Scsi_Host *shost = rport_to_shost(rport);
|
|
struct scsi_device *sdev = NULL, *tmp_sdev;
|
|
struct zfcp_adapter *adapter =
|
|
(struct zfcp_adapter *)shost->hostdata[0];
|
|
int ret;
|
|
|
|
shost_for_each_device(tmp_sdev, shost) {
|
|
if (tmp_sdev->id == starget->id) {
|
|
sdev = tmp_sdev;
|
|
break;
|
|
}
|
|
}
|
|
if (!sdev) {
|
|
ret = FAILED;
|
|
zfcp_dbf_scsi_eh("tr_nosd", adapter, starget->id, ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = zfcp_scsi_task_mgmt_function(sdev, FCP_TMF_TGT_RESET);
|
|
|
|
/* release reference from above shost_for_each_device */
|
|
if (sdev)
|
|
scsi_device_put(tmp_sdev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt)
|
|
{
|
|
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device);
|
|
struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
|
|
int ret = SUCCESS, fc_ret;
|
|
|
|
if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE)) {
|
|
zfcp_erp_port_forced_reopen_all(adapter, 0, "schrh_p");
|
|
zfcp_erp_wait(adapter);
|
|
}
|
|
zfcp_erp_adapter_reopen(adapter, 0, "schrh_1");
|
|
zfcp_erp_wait(adapter);
|
|
fc_ret = fc_block_scsi_eh(scpnt);
|
|
if (fc_ret)
|
|
ret = fc_ret;
|
|
|
|
zfcp_dbf_scsi_eh("schrh_r", adapter, ~0, ret);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* zfcp_scsi_sysfs_host_reset() - Support scsi_host sysfs attribute host_reset.
|
|
* @shost: Pointer to Scsi_Host to perform action on.
|
|
* @reset_type: We support %SCSI_ADAPTER_RESET but not %SCSI_FIRMWARE_RESET.
|
|
*
|
|
* Return: 0 on %SCSI_ADAPTER_RESET, -%EOPNOTSUPP otherwise.
|
|
*
|
|
* This is similar to zfcp_sysfs_adapter_failed_store().
|
|
*/
|
|
static int zfcp_scsi_sysfs_host_reset(struct Scsi_Host *shost, int reset_type)
|
|
{
|
|
struct zfcp_adapter *adapter =
|
|
(struct zfcp_adapter *)shost->hostdata[0];
|
|
int ret = 0;
|
|
|
|
if (reset_type != SCSI_ADAPTER_RESET) {
|
|
ret = -EOPNOTSUPP;
|
|
zfcp_dbf_scsi_eh("scshr_n", adapter, ~0, ret);
|
|
return ret;
|
|
}
|
|
|
|
zfcp_erp_adapter_reset_sync(adapter, "scshr_y");
|
|
return ret;
|
|
}
|
|
|
|
struct scsi_transport_template *zfcp_scsi_transport_template;
|
|
|
|
static struct scsi_host_template zfcp_scsi_host_template = {
|
|
.module = THIS_MODULE,
|
|
.name = "zfcp",
|
|
.queuecommand = zfcp_scsi_queuecommand,
|
|
.eh_timed_out = fc_eh_timed_out,
|
|
.eh_abort_handler = zfcp_scsi_eh_abort_handler,
|
|
.eh_device_reset_handler = zfcp_scsi_eh_device_reset_handler,
|
|
.eh_target_reset_handler = zfcp_scsi_eh_target_reset_handler,
|
|
.eh_host_reset_handler = zfcp_scsi_eh_host_reset_handler,
|
|
.slave_alloc = zfcp_scsi_slave_alloc,
|
|
.slave_configure = zfcp_scsi_slave_configure,
|
|
.slave_destroy = zfcp_scsi_slave_destroy,
|
|
.change_queue_depth = scsi_change_queue_depth,
|
|
.host_reset = zfcp_scsi_sysfs_host_reset,
|
|
.proc_name = "zfcp",
|
|
.can_queue = 4096,
|
|
.this_id = -1,
|
|
.sg_tablesize = (((QDIO_MAX_ELEMENTS_PER_BUFFER - 1)
|
|
* ZFCP_QDIO_MAX_SBALS_PER_REQ) - 2),
|
|
/* GCD, adjusted later */
|
|
.max_sectors = (((QDIO_MAX_ELEMENTS_PER_BUFFER - 1)
|
|
* ZFCP_QDIO_MAX_SBALS_PER_REQ) - 2) * 8,
|
|
/* GCD, adjusted later */
|
|
/* report size limit per scatter-gather segment */
|
|
.max_segment_size = ZFCP_QDIO_SBALE_LEN,
|
|
.dma_boundary = ZFCP_QDIO_SBALE_LEN - 1,
|
|
.shost_attrs = zfcp_sysfs_shost_attrs,
|
|
.sdev_attrs = zfcp_sysfs_sdev_attrs,
|
|
.track_queue_depth = 1,
|
|
.supported_mode = MODE_INITIATOR,
|
|
};
|
|
|
|
/**
|
|
* zfcp_scsi_adapter_register() - Allocate and register SCSI and FC host with
|
|
* SCSI midlayer
|
|
* @adapter: The zfcp adapter to register with the SCSI midlayer
|
|
*
|
|
* Allocates the SCSI host object for the given adapter, sets basic properties
|
|
* (such as the transport template, QDIO limits, ...), and registers it with
|
|
* the midlayer.
|
|
*
|
|
* During registration with the midlayer the corresponding FC host object for
|
|
* the referenced transport class is also implicitely allocated.
|
|
*
|
|
* Upon success adapter->scsi_host is set, and upon failure it remains NULL. If
|
|
* adapter->scsi_host is already set, nothing is done.
|
|
*
|
|
* Return:
|
|
* * 0 - Allocation and registration was successful
|
|
* * -EEXIST - SCSI and FC host did already exist, nothing was done, nothing
|
|
* was changed
|
|
* * -EIO - Allocation or registration failed
|
|
*/
|
|
int zfcp_scsi_adapter_register(struct zfcp_adapter *adapter)
|
|
{
|
|
struct ccw_dev_id dev_id;
|
|
|
|
if (adapter->scsi_host)
|
|
return -EEXIST;
|
|
|
|
ccw_device_get_id(adapter->ccw_device, &dev_id);
|
|
/* register adapter as SCSI host with mid layer of SCSI stack */
|
|
adapter->scsi_host = scsi_host_alloc(&zfcp_scsi_host_template,
|
|
sizeof (struct zfcp_adapter *));
|
|
if (!adapter->scsi_host)
|
|
goto err_out;
|
|
|
|
/* tell the SCSI stack some characteristics of this adapter */
|
|
adapter->scsi_host->max_id = 511;
|
|
adapter->scsi_host->max_lun = 0xFFFFFFFF;
|
|
adapter->scsi_host->max_channel = 0;
|
|
adapter->scsi_host->unique_id = dev_id.devno;
|
|
adapter->scsi_host->max_cmd_len = 16; /* in struct fcp_cmnd */
|
|
adapter->scsi_host->transportt = zfcp_scsi_transport_template;
|
|
|
|
/* make all basic properties known at registration time */
|
|
zfcp_qdio_shost_update(adapter, adapter->qdio);
|
|
zfcp_scsi_set_prot(adapter);
|
|
|
|
adapter->scsi_host->hostdata[0] = (unsigned long) adapter;
|
|
|
|
if (scsi_add_host(adapter->scsi_host, &adapter->ccw_device->dev)) {
|
|
scsi_host_put(adapter->scsi_host);
|
|
goto err_out;
|
|
}
|
|
|
|
return 0;
|
|
err_out:
|
|
adapter->scsi_host = NULL;
|
|
dev_err(&adapter->ccw_device->dev,
|
|
"Registering the FCP device with the SCSI stack failed\n");
|
|
return -EIO;
|
|
}
|
|
|
|
/**
|
|
* zfcp_scsi_adapter_unregister - Unregister SCSI and FC host from SCSI midlayer
|
|
* @adapter: The zfcp adapter to unregister.
|
|
*/
|
|
void zfcp_scsi_adapter_unregister(struct zfcp_adapter *adapter)
|
|
{
|
|
struct Scsi_Host *shost;
|
|
struct zfcp_port *port;
|
|
|
|
shost = adapter->scsi_host;
|
|
if (!shost)
|
|
return;
|
|
|
|
read_lock_irq(&adapter->port_list_lock);
|
|
list_for_each_entry(port, &adapter->port_list, list)
|
|
port->rport = NULL;
|
|
read_unlock_irq(&adapter->port_list_lock);
|
|
|
|
fc_remove_host(shost);
|
|
scsi_remove_host(shost);
|
|
scsi_host_put(shost);
|
|
adapter->scsi_host = NULL;
|
|
}
|
|
|
|
static struct fc_host_statistics*
|
|
zfcp_scsi_init_fc_host_stats(struct zfcp_adapter *adapter)
|
|
{
|
|
struct fc_host_statistics *fc_stats;
|
|
|
|
if (!adapter->fc_stats) {
|
|
fc_stats = kmalloc(sizeof(*fc_stats), GFP_KERNEL);
|
|
if (!fc_stats)
|
|
return NULL;
|
|
adapter->fc_stats = fc_stats; /* freed in adapter_release */
|
|
}
|
|
memset(adapter->fc_stats, 0, sizeof(*adapter->fc_stats));
|
|
return adapter->fc_stats;
|
|
}
|
|
|
|
static void zfcp_scsi_adjust_fc_host_stats(struct fc_host_statistics *fc_stats,
|
|
struct fsf_qtcb_bottom_port *data,
|
|
struct fsf_qtcb_bottom_port *old)
|
|
{
|
|
fc_stats->seconds_since_last_reset =
|
|
data->seconds_since_last_reset - old->seconds_since_last_reset;
|
|
fc_stats->tx_frames = data->tx_frames - old->tx_frames;
|
|
fc_stats->tx_words = data->tx_words - old->tx_words;
|
|
fc_stats->rx_frames = data->rx_frames - old->rx_frames;
|
|
fc_stats->rx_words = data->rx_words - old->rx_words;
|
|
fc_stats->lip_count = data->lip - old->lip;
|
|
fc_stats->nos_count = data->nos - old->nos;
|
|
fc_stats->error_frames = data->error_frames - old->error_frames;
|
|
fc_stats->dumped_frames = data->dumped_frames - old->dumped_frames;
|
|
fc_stats->link_failure_count = data->link_failure - old->link_failure;
|
|
fc_stats->loss_of_sync_count = data->loss_of_sync - old->loss_of_sync;
|
|
fc_stats->loss_of_signal_count =
|
|
data->loss_of_signal - old->loss_of_signal;
|
|
fc_stats->prim_seq_protocol_err_count =
|
|
data->psp_error_counts - old->psp_error_counts;
|
|
fc_stats->invalid_tx_word_count =
|
|
data->invalid_tx_words - old->invalid_tx_words;
|
|
fc_stats->invalid_crc_count = data->invalid_crcs - old->invalid_crcs;
|
|
fc_stats->fcp_input_requests =
|
|
data->input_requests - old->input_requests;
|
|
fc_stats->fcp_output_requests =
|
|
data->output_requests - old->output_requests;
|
|
fc_stats->fcp_control_requests =
|
|
data->control_requests - old->control_requests;
|
|
fc_stats->fcp_input_megabytes = data->input_mb - old->input_mb;
|
|
fc_stats->fcp_output_megabytes = data->output_mb - old->output_mb;
|
|
}
|
|
|
|
static void zfcp_scsi_set_fc_host_stats(struct fc_host_statistics *fc_stats,
|
|
struct fsf_qtcb_bottom_port *data)
|
|
{
|
|
fc_stats->seconds_since_last_reset = data->seconds_since_last_reset;
|
|
fc_stats->tx_frames = data->tx_frames;
|
|
fc_stats->tx_words = data->tx_words;
|
|
fc_stats->rx_frames = data->rx_frames;
|
|
fc_stats->rx_words = data->rx_words;
|
|
fc_stats->lip_count = data->lip;
|
|
fc_stats->nos_count = data->nos;
|
|
fc_stats->error_frames = data->error_frames;
|
|
fc_stats->dumped_frames = data->dumped_frames;
|
|
fc_stats->link_failure_count = data->link_failure;
|
|
fc_stats->loss_of_sync_count = data->loss_of_sync;
|
|
fc_stats->loss_of_signal_count = data->loss_of_signal;
|
|
fc_stats->prim_seq_protocol_err_count = data->psp_error_counts;
|
|
fc_stats->invalid_tx_word_count = data->invalid_tx_words;
|
|
fc_stats->invalid_crc_count = data->invalid_crcs;
|
|
fc_stats->fcp_input_requests = data->input_requests;
|
|
fc_stats->fcp_output_requests = data->output_requests;
|
|
fc_stats->fcp_control_requests = data->control_requests;
|
|
fc_stats->fcp_input_megabytes = data->input_mb;
|
|
fc_stats->fcp_output_megabytes = data->output_mb;
|
|
}
|
|
|
|
static struct fc_host_statistics *
|
|
zfcp_scsi_get_fc_host_stats(struct Scsi_Host *host)
|
|
{
|
|
struct zfcp_adapter *adapter;
|
|
struct fc_host_statistics *fc_stats;
|
|
struct fsf_qtcb_bottom_port *data;
|
|
int ret;
|
|
|
|
adapter = (struct zfcp_adapter *)host->hostdata[0];
|
|
fc_stats = zfcp_scsi_init_fc_host_stats(adapter);
|
|
if (!fc_stats)
|
|
return NULL;
|
|
|
|
data = kzalloc(sizeof(*data), GFP_KERNEL);
|
|
if (!data)
|
|
return NULL;
|
|
|
|
ret = zfcp_fsf_exchange_port_data_sync(adapter->qdio, data);
|
|
if (ret != 0 && ret != -EAGAIN) {
|
|
kfree(data);
|
|
return NULL;
|
|
}
|
|
|
|
if (adapter->stats_reset &&
|
|
((jiffies/HZ - adapter->stats_reset) <
|
|
data->seconds_since_last_reset))
|
|
zfcp_scsi_adjust_fc_host_stats(fc_stats, data,
|
|
adapter->stats_reset_data);
|
|
else
|
|
zfcp_scsi_set_fc_host_stats(fc_stats, data);
|
|
|
|
kfree(data);
|
|
return fc_stats;
|
|
}
|
|
|
|
static void zfcp_scsi_reset_fc_host_stats(struct Scsi_Host *shost)
|
|
{
|
|
struct zfcp_adapter *adapter;
|
|
struct fsf_qtcb_bottom_port *data;
|
|
int ret;
|
|
|
|
adapter = (struct zfcp_adapter *)shost->hostdata[0];
|
|
data = kzalloc(sizeof(*data), GFP_KERNEL);
|
|
if (!data)
|
|
return;
|
|
|
|
ret = zfcp_fsf_exchange_port_data_sync(adapter->qdio, data);
|
|
if (ret != 0 && ret != -EAGAIN)
|
|
kfree(data);
|
|
else {
|
|
adapter->stats_reset = jiffies/HZ;
|
|
kfree(adapter->stats_reset_data);
|
|
adapter->stats_reset_data = data; /* finally freed in
|
|
adapter_release */
|
|
}
|
|
}
|
|
|
|
static void zfcp_scsi_get_host_port_state(struct Scsi_Host *shost)
|
|
{
|
|
struct zfcp_adapter *adapter =
|
|
(struct zfcp_adapter *)shost->hostdata[0];
|
|
int status = atomic_read(&adapter->status);
|
|
|
|
if ((status & ZFCP_STATUS_COMMON_RUNNING) &&
|
|
!(status & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED))
|
|
fc_host_port_state(shost) = FC_PORTSTATE_ONLINE;
|
|
else if (status & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED)
|
|
fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN;
|
|
else if (status & ZFCP_STATUS_COMMON_ERP_FAILED)
|
|
fc_host_port_state(shost) = FC_PORTSTATE_ERROR;
|
|
else
|
|
fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN;
|
|
}
|
|
|
|
static void zfcp_scsi_set_rport_dev_loss_tmo(struct fc_rport *rport,
|
|
u32 timeout)
|
|
{
|
|
rport->dev_loss_tmo = timeout;
|
|
}
|
|
|
|
/**
|
|
* zfcp_scsi_terminate_rport_io - Terminate all I/O on a rport
|
|
* @rport: The FC rport where to teminate I/O
|
|
*
|
|
* Abort all pending SCSI commands for a port by closing the
|
|
* port. Using a reopen avoids a conflict with a shutdown
|
|
* overwriting a reopen. The "forced" ensures that a disappeared port
|
|
* is not opened again as valid due to the cached plogi data in
|
|
* non-NPIV mode.
|
|
*/
|
|
static void zfcp_scsi_terminate_rport_io(struct fc_rport *rport)
|
|
{
|
|
struct zfcp_port *port;
|
|
struct Scsi_Host *shost = rport_to_shost(rport);
|
|
struct zfcp_adapter *adapter =
|
|
(struct zfcp_adapter *)shost->hostdata[0];
|
|
|
|
port = zfcp_get_port_by_wwpn(adapter, rport->port_name);
|
|
|
|
if (port) {
|
|
zfcp_erp_port_forced_reopen(port, 0, "sctrpi1");
|
|
put_device(&port->dev);
|
|
} else {
|
|
zfcp_erp_port_forced_no_port_dbf(
|
|
"sctrpin", adapter,
|
|
rport->port_name /* zfcp_scsi_rport_register */,
|
|
rport->port_id /* zfcp_scsi_rport_register */);
|
|
}
|
|
}
|
|
|
|
static void zfcp_scsi_rport_register(struct zfcp_port *port)
|
|
{
|
|
struct fc_rport_identifiers ids;
|
|
struct fc_rport *rport;
|
|
|
|
if (port->rport)
|
|
return;
|
|
|
|
ids.node_name = port->wwnn;
|
|
ids.port_name = port->wwpn;
|
|
ids.port_id = port->d_id;
|
|
ids.roles = FC_RPORT_ROLE_FCP_TARGET;
|
|
|
|
zfcp_dbf_rec_trig_lock("scpaddy", port->adapter, port, NULL,
|
|
ZFCP_PSEUDO_ERP_ACTION_RPORT_ADD,
|
|
ZFCP_PSEUDO_ERP_ACTION_RPORT_ADD);
|
|
rport = fc_remote_port_add(port->adapter->scsi_host, 0, &ids);
|
|
if (!rport) {
|
|
dev_err(&port->adapter->ccw_device->dev,
|
|
"Registering port 0x%016Lx failed\n",
|
|
(unsigned long long)port->wwpn);
|
|
return;
|
|
}
|
|
|
|
rport->maxframe_size = port->maxframe_size;
|
|
rport->supported_classes = port->supported_classes;
|
|
port->rport = rport;
|
|
port->starget_id = rport->scsi_target_id;
|
|
|
|
zfcp_unit_queue_scsi_scan(port);
|
|
}
|
|
|
|
static void zfcp_scsi_rport_block(struct zfcp_port *port)
|
|
{
|
|
struct fc_rport *rport = port->rport;
|
|
|
|
if (rport) {
|
|
zfcp_dbf_rec_trig_lock("scpdely", port->adapter, port, NULL,
|
|
ZFCP_PSEUDO_ERP_ACTION_RPORT_DEL,
|
|
ZFCP_PSEUDO_ERP_ACTION_RPORT_DEL);
|
|
fc_remote_port_delete(rport);
|
|
port->rport = NULL;
|
|
}
|
|
}
|
|
|
|
void zfcp_scsi_schedule_rport_register(struct zfcp_port *port)
|
|
{
|
|
get_device(&port->dev);
|
|
port->rport_task = RPORT_ADD;
|
|
|
|
if (!queue_work(port->adapter->work_queue, &port->rport_work))
|
|
put_device(&port->dev);
|
|
}
|
|
|
|
void zfcp_scsi_schedule_rport_block(struct zfcp_port *port)
|
|
{
|
|
get_device(&port->dev);
|
|
port->rport_task = RPORT_DEL;
|
|
|
|
if (port->rport && queue_work(port->adapter->work_queue,
|
|
&port->rport_work))
|
|
return;
|
|
|
|
put_device(&port->dev);
|
|
}
|
|
|
|
void zfcp_scsi_schedule_rports_block(struct zfcp_adapter *adapter)
|
|
{
|
|
unsigned long flags;
|
|
struct zfcp_port *port;
|
|
|
|
read_lock_irqsave(&adapter->port_list_lock, flags);
|
|
list_for_each_entry(port, &adapter->port_list, list)
|
|
zfcp_scsi_schedule_rport_block(port);
|
|
read_unlock_irqrestore(&adapter->port_list_lock, flags);
|
|
}
|
|
|
|
void zfcp_scsi_rport_work(struct work_struct *work)
|
|
{
|
|
struct zfcp_port *port = container_of(work, struct zfcp_port,
|
|
rport_work);
|
|
|
|
set_worker_desc("zrp%c-%16llx",
|
|
(port->rport_task == RPORT_ADD) ? 'a' : 'd',
|
|
port->wwpn); /* < WORKER_DESC_LEN=24 */
|
|
while (port->rport_task) {
|
|
if (port->rport_task == RPORT_ADD) {
|
|
port->rport_task = RPORT_NONE;
|
|
zfcp_scsi_rport_register(port);
|
|
} else {
|
|
port->rport_task = RPORT_NONE;
|
|
zfcp_scsi_rport_block(port);
|
|
}
|
|
}
|
|
|
|
put_device(&port->dev);
|
|
}
|
|
|
|
/**
|
|
* zfcp_scsi_set_prot - Configure DIF/DIX support in scsi_host
|
|
* @adapter: The adapter where to configure DIF/DIX for the SCSI host
|
|
*/
|
|
void zfcp_scsi_set_prot(struct zfcp_adapter *adapter)
|
|
{
|
|
unsigned int mask = 0;
|
|
unsigned int data_div;
|
|
struct Scsi_Host *shost = adapter->scsi_host;
|
|
|
|
data_div = atomic_read(&adapter->status) &
|
|
ZFCP_STATUS_ADAPTER_DATA_DIV_ENABLED;
|
|
|
|
if ((enable_dif || zfcp_experimental_dix) &&
|
|
adapter->adapter_features & FSF_FEATURE_DIF_PROT_TYPE1)
|
|
mask |= SHOST_DIF_TYPE1_PROTECTION;
|
|
|
|
if (zfcp_experimental_dix && data_div &&
|
|
adapter->adapter_features & FSF_FEATURE_DIX_PROT_TCPIP) {
|
|
mask |= SHOST_DIX_TYPE1_PROTECTION;
|
|
scsi_host_set_guard(shost, SHOST_DIX_GUARD_IP);
|
|
shost->sg_prot_tablesize = adapter->qdio->max_sbale_per_req / 2;
|
|
shost->sg_tablesize = adapter->qdio->max_sbale_per_req / 2;
|
|
shost->max_sectors = shost->sg_tablesize * 8;
|
|
}
|
|
|
|
scsi_host_set_prot(shost, mask);
|
|
}
|
|
|
|
/**
|
|
* zfcp_scsi_dif_sense_error - Report DIF/DIX error as driver sense error
|
|
* @scmd: The SCSI command to report the error for
|
|
* @ascq: The ASCQ to put in the sense buffer
|
|
*
|
|
* See the error handling in sd_done for the sense codes used here.
|
|
* Set DID_SOFT_ERROR to retry the request, if possible.
|
|
*/
|
|
void zfcp_scsi_dif_sense_error(struct scsi_cmnd *scmd, int ascq)
|
|
{
|
|
scsi_build_sense_buffer(1, scmd->sense_buffer,
|
|
ILLEGAL_REQUEST, 0x10, ascq);
|
|
set_driver_byte(scmd, DRIVER_SENSE);
|
|
scmd->result |= SAM_STAT_CHECK_CONDITION;
|
|
set_host_byte(scmd, DID_SOFT_ERROR);
|
|
}
|
|
|
|
void zfcp_scsi_shost_update_config_data(
|
|
struct zfcp_adapter *const adapter,
|
|
const struct fsf_qtcb_bottom_config *const bottom,
|
|
const bool bottom_incomplete)
|
|
{
|
|
struct Scsi_Host *const shost = adapter->scsi_host;
|
|
const struct fc_els_flogi *nsp, *plogi;
|
|
|
|
if (shost == NULL)
|
|
return;
|
|
|
|
snprintf(fc_host_firmware_version(shost), FC_VERSION_STRING_SIZE,
|
|
"0x%08x", bottom->lic_version);
|
|
|
|
if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) {
|
|
snprintf(fc_host_hardware_version(shost),
|
|
FC_VERSION_STRING_SIZE,
|
|
"0x%08x", bottom->hardware_version);
|
|
memcpy(fc_host_serial_number(shost), bottom->serial_number,
|
|
min(FC_SERIAL_NUMBER_SIZE, 17));
|
|
EBCASC(fc_host_serial_number(shost),
|
|
min(FC_SERIAL_NUMBER_SIZE, 17));
|
|
}
|
|
|
|
/* adjust pointers for missing command code */
|
|
nsp = (struct fc_els_flogi *) ((u8 *)&bottom->nport_serv_param
|
|
- sizeof(u32));
|
|
plogi = (struct fc_els_flogi *) ((u8 *)&bottom->plogi_payload
|
|
- sizeof(u32));
|
|
|
|
snprintf(fc_host_manufacturer(shost), FC_SERIAL_NUMBER_SIZE, "%s",
|
|
"IBM");
|
|
fc_host_port_name(shost) = be64_to_cpu(nsp->fl_wwpn);
|
|
fc_host_node_name(shost) = be64_to_cpu(nsp->fl_wwnn);
|
|
fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3;
|
|
|
|
zfcp_scsi_set_prot(adapter);
|
|
|
|
/* do not evaluate invalid fields */
|
|
if (bottom_incomplete)
|
|
return;
|
|
|
|
fc_host_port_id(shost) = ntoh24(bottom->s_id);
|
|
fc_host_speed(shost) =
|
|
zfcp_fsf_convert_portspeed(bottom->fc_link_speed);
|
|
|
|
snprintf(fc_host_model(shost), FC_SYMBOLIC_NAME_SIZE, "0x%04x",
|
|
bottom->adapter_type);
|
|
|
|
switch (bottom->fc_topology) {
|
|
case FSF_TOPO_P2P:
|
|
fc_host_port_type(shost) = FC_PORTTYPE_PTP;
|
|
fc_host_fabric_name(shost) = 0;
|
|
break;
|
|
case FSF_TOPO_FABRIC:
|
|
fc_host_fabric_name(shost) = be64_to_cpu(plogi->fl_wwnn);
|
|
if (bottom->connection_features & FSF_FEATURE_NPIV_MODE)
|
|
fc_host_port_type(shost) = FC_PORTTYPE_NPIV;
|
|
else
|
|
fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
|
|
break;
|
|
case FSF_TOPO_AL:
|
|
fc_host_port_type(shost) = FC_PORTTYPE_NLPORT;
|
|
fallthrough;
|
|
default:
|
|
fc_host_fabric_name(shost) = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
void zfcp_scsi_shost_update_port_data(
|
|
struct zfcp_adapter *const adapter,
|
|
const struct fsf_qtcb_bottom_port *const bottom)
|
|
{
|
|
struct Scsi_Host *const shost = adapter->scsi_host;
|
|
|
|
if (shost == NULL)
|
|
return;
|
|
|
|
fc_host_permanent_port_name(shost) = bottom->wwpn;
|
|
fc_host_maxframe_size(shost) = bottom->maximum_frame_size;
|
|
fc_host_supported_speeds(shost) =
|
|
zfcp_fsf_convert_portspeed(bottom->supported_speed);
|
|
memcpy(fc_host_supported_fc4s(shost), bottom->supported_fc4_types,
|
|
FC_FC4_LIST_SIZE);
|
|
memcpy(fc_host_active_fc4s(shost), bottom->active_fc4_types,
|
|
FC_FC4_LIST_SIZE);
|
|
}
|
|
|
|
struct fc_function_template zfcp_transport_functions = {
|
|
.show_starget_port_id = 1,
|
|
.show_starget_port_name = 1,
|
|
.show_starget_node_name = 1,
|
|
.show_rport_supported_classes = 1,
|
|
.show_rport_maxframe_size = 1,
|
|
.show_rport_dev_loss_tmo = 1,
|
|
.show_host_node_name = 1,
|
|
.show_host_port_name = 1,
|
|
.show_host_permanent_port_name = 1,
|
|
.show_host_supported_classes = 1,
|
|
.show_host_supported_fc4s = 1,
|
|
.show_host_supported_speeds = 1,
|
|
.show_host_maxframe_size = 1,
|
|
.show_host_serial_number = 1,
|
|
.show_host_manufacturer = 1,
|
|
.show_host_model = 1,
|
|
.show_host_hardware_version = 1,
|
|
.show_host_firmware_version = 1,
|
|
.get_fc_host_stats = zfcp_scsi_get_fc_host_stats,
|
|
.reset_fc_host_stats = zfcp_scsi_reset_fc_host_stats,
|
|
.set_rport_dev_loss_tmo = zfcp_scsi_set_rport_dev_loss_tmo,
|
|
.get_host_port_state = zfcp_scsi_get_host_port_state,
|
|
.terminate_rport_io = zfcp_scsi_terminate_rport_io,
|
|
.show_host_port_state = 1,
|
|
.show_host_active_fc4s = 1,
|
|
.bsg_request = zfcp_fc_exec_bsg_job,
|
|
.bsg_timeout = zfcp_fc_timeout_bsg_job,
|
|
/* no functions registered for following dynamic attributes but
|
|
directly set by LLDD */
|
|
.show_host_port_type = 1,
|
|
.show_host_symbolic_name = 1,
|
|
.show_host_speed = 1,
|
|
.show_host_port_id = 1,
|
|
.show_host_fabric_name = 1,
|
|
.dd_bsg_size = sizeof(struct zfcp_fsf_ct_els),
|
|
};
|