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alistair23-linux/drivers/scsi/fnic/fnic_main.c
Kees Cook e99e88a9d2 treewide: setup_timer() -> timer_setup() 
This converts all remaining cases of the old setup_timer() API into using
timer_setup(), where the callback argument is the structure already
holding the struct timer_list. These should have no behavioral changes,
since they just change which pointer is passed into the callback with
the same available pointers after conversion. It handles the following
examples, in addition to some other variations.

Casting from unsigned long:

    void my_callback(unsigned long data)
    {
        struct something *ptr = (struct something *)data;
    ...
    }
    ...
    setup_timer(&ptr->my_timer, my_callback, ptr);

and forced object casts:

    void my_callback(struct something *ptr)
    {
    ...
    }
    ...
    setup_timer(&ptr->my_timer, my_callback, (unsigned long)ptr);

become:

    void my_callback(struct timer_list *t)
    {
        struct something *ptr = from_timer(ptr, t, my_timer);
    ...
    }
    ...
    timer_setup(&ptr->my_timer, my_callback, 0);

Direct function assignments:

    void my_callback(unsigned long data)
    {
        struct something *ptr = (struct something *)data;
    ...
    }
    ...
    ptr->my_timer.function = my_callback;

have a temporary cast added, along with converting the args:

    void my_callback(struct timer_list *t)
    {
        struct something *ptr = from_timer(ptr, t, my_timer);
    ...
    }
    ...
    ptr->my_timer.function = (TIMER_FUNC_TYPE)my_callback;

And finally, callbacks without a data assignment:

    void my_callback(unsigned long data)
    {
    ...
    }
    ...
    setup_timer(&ptr->my_timer, my_callback, 0);

have their argument renamed to verify they're unused during conversion:

    void my_callback(struct timer_list *unused)
    {
    ...
    }
    ...
    timer_setup(&ptr->my_timer, my_callback, 0);

The conversion is done with the following Coccinelle script:

spatch --very-quiet --all-includes --include-headers \
	-I ./arch/x86/include -I ./arch/x86/include/generated \
	-I ./include -I ./arch/x86/include/uapi \
	-I ./arch/x86/include/generated/uapi -I ./include/uapi \
	-I ./include/generated/uapi --include ./include/linux/kconfig.h \
	--dir . \
	--cocci-file ~/src/data/timer_setup.cocci

@fix_address_of@
expression e;
@@

 setup_timer(
-&(e)
+&e
 , ...)

// Update any raw setup_timer() usages that have a NULL callback, but
// would otherwise match change_timer_function_usage, since the latter
// will update all function assignments done in the face of a NULL
// function initialization in setup_timer().
@change_timer_function_usage_NULL@
expression _E;
identifier _timer;
type _cast_data;
@@

(
-setup_timer(&_E->_timer, NULL, _E);
+timer_setup(&_E->_timer, NULL, 0);
|
-setup_timer(&_E->_timer, NULL, (_cast_data)_E);
+timer_setup(&_E->_timer, NULL, 0);
|
-setup_timer(&_E._timer, NULL, &_E);
+timer_setup(&_E._timer, NULL, 0);
|
-setup_timer(&_E._timer, NULL, (_cast_data)&_E);
+timer_setup(&_E._timer, NULL, 0);
)

@change_timer_function_usage@
expression _E;
identifier _timer;
struct timer_list _stl;
identifier _callback;
type _cast_func, _cast_data;
@@

(
-setup_timer(&_E->_timer, _callback, _E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, &_callback, _E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, _callback, (_cast_data)_E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, &_callback, (_cast_data)_E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, (_cast_func)_callback, _E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, (_cast_func)&_callback, _E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, (_cast_func)_callback, (_cast_data)_E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, (_cast_func)&_callback, (_cast_data)_E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E._timer, _callback, (_cast_data)_E);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, _callback, (_cast_data)&_E);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, &_callback, (_cast_data)_E);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, &_callback, (_cast_data)&_E);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, (_cast_func)_callback, (_cast_data)_E);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, (_cast_func)_callback, (_cast_data)&_E);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, (_cast_func)&_callback, (_cast_data)_E);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, (_cast_func)&_callback, (_cast_data)&_E);
+timer_setup(&_E._timer, _callback, 0);
|
 _E->_timer@_stl.function = _callback;
|
 _E->_timer@_stl.function = &_callback;
|
 _E->_timer@_stl.function = (_cast_func)_callback;
|
 _E->_timer@_stl.function = (_cast_func)&_callback;
|
 _E._timer@_stl.function = _callback;
|
 _E._timer@_stl.function = &_callback;
|
 _E._timer@_stl.function = (_cast_func)_callback;
|
 _E._timer@_stl.function = (_cast_func)&_callback;
)

// callback(unsigned long arg)
@change_callback_handle_cast
 depends on change_timer_function_usage@
identifier change_timer_function_usage._callback;
identifier change_timer_function_usage._timer;
type _origtype;
identifier _origarg;
type _handletype;
identifier _handle;
@@

 void _callback(
-_origtype _origarg
+struct timer_list *t
 )
 {
(
	... when != _origarg
	_handletype *_handle =
-(_handletype *)_origarg;
+from_timer(_handle, t, _timer);
	... when != _origarg
|
	... when != _origarg
	_handletype *_handle =
-(void *)_origarg;
+from_timer(_handle, t, _timer);
	... when != _origarg
|
	... when != _origarg
	_handletype *_handle;
	... when != _handle
	_handle =
-(_handletype *)_origarg;
+from_timer(_handle, t, _timer);
	... when != _origarg
|
	... when != _origarg
	_handletype *_handle;
	... when != _handle
	_handle =
-(void *)_origarg;
+from_timer(_handle, t, _timer);
	... when != _origarg
)
 }

// callback(unsigned long arg) without existing variable
@change_callback_handle_cast_no_arg
 depends on change_timer_function_usage &&
                     !change_callback_handle_cast@
identifier change_timer_function_usage._callback;
identifier change_timer_function_usage._timer;
type _origtype;
identifier _origarg;
type _handletype;
@@

 void _callback(
-_origtype _origarg
+struct timer_list *t
 )
 {
+	_handletype *_origarg = from_timer(_origarg, t, _timer);
+
	... when != _origarg
-	(_handletype *)_origarg
+	_origarg
	... when != _origarg
 }

// Avoid already converted callbacks.
@match_callback_converted
 depends on change_timer_function_usage &&
            !change_callback_handle_cast &&
	    !change_callback_handle_cast_no_arg@
identifier change_timer_function_usage._callback;
identifier t;
@@

 void _callback(struct timer_list *t)
 { ... }

// callback(struct something *handle)
@change_callback_handle_arg
 depends on change_timer_function_usage &&
	    !match_callback_converted &&
            !change_callback_handle_cast &&
            !change_callback_handle_cast_no_arg@
identifier change_timer_function_usage._callback;
identifier change_timer_function_usage._timer;
type _handletype;
identifier _handle;
@@

 void _callback(
-_handletype *_handle
+struct timer_list *t
 )
 {
+	_handletype *_handle = from_timer(_handle, t, _timer);
	...
 }

// If change_callback_handle_arg ran on an empty function, remove
// the added handler.
@unchange_callback_handle_arg
 depends on change_timer_function_usage &&
	    change_callback_handle_arg@
identifier change_timer_function_usage._callback;
identifier change_timer_function_usage._timer;
type _handletype;
identifier _handle;
identifier t;
@@

 void _callback(struct timer_list *t)
 {
-	_handletype *_handle = from_timer(_handle, t, _timer);
 }

// We only want to refactor the setup_timer() data argument if we've found
// the matching callback. This undoes changes in change_timer_function_usage.
@unchange_timer_function_usage
 depends on change_timer_function_usage &&
            !change_callback_handle_cast &&
            !change_callback_handle_cast_no_arg &&
	    !change_callback_handle_arg@
expression change_timer_function_usage._E;
identifier change_timer_function_usage._timer;
identifier change_timer_function_usage._callback;
type change_timer_function_usage._cast_data;
@@

(
-timer_setup(&_E->_timer, _callback, 0);
+setup_timer(&_E->_timer, _callback, (_cast_data)_E);
|
-timer_setup(&_E._timer, _callback, 0);
+setup_timer(&_E._timer, _callback, (_cast_data)&_E);
)

// If we fixed a callback from a .function assignment, fix the
// assignment cast now.
@change_timer_function_assignment
 depends on change_timer_function_usage &&
            (change_callback_handle_cast ||
             change_callback_handle_cast_no_arg ||
             change_callback_handle_arg)@
expression change_timer_function_usage._E;
identifier change_timer_function_usage._timer;
identifier change_timer_function_usage._callback;
type _cast_func;
typedef TIMER_FUNC_TYPE;
@@

(
 _E->_timer.function =
-_callback
+(TIMER_FUNC_TYPE)_callback
 ;
|
 _E->_timer.function =
-&_callback
+(TIMER_FUNC_TYPE)_callback
 ;
|
 _E->_timer.function =
-(_cast_func)_callback;
+(TIMER_FUNC_TYPE)_callback
 ;
|
 _E->_timer.function =
-(_cast_func)&_callback
+(TIMER_FUNC_TYPE)_callback
 ;
|
 _E._timer.function =
-_callback
+(TIMER_FUNC_TYPE)_callback
 ;
|
 _E._timer.function =
-&_callback;
+(TIMER_FUNC_TYPE)_callback
 ;
|
 _E._timer.function =
-(_cast_func)_callback
+(TIMER_FUNC_TYPE)_callback
 ;
|
 _E._timer.function =
-(_cast_func)&_callback
+(TIMER_FUNC_TYPE)_callback
 ;
)

// Sometimes timer functions are called directly. Replace matched args.
@change_timer_function_calls
 depends on change_timer_function_usage &&
            (change_callback_handle_cast ||
             change_callback_handle_cast_no_arg ||
             change_callback_handle_arg)@
expression _E;
identifier change_timer_function_usage._timer;
identifier change_timer_function_usage._callback;
type _cast_data;
@@

 _callback(
(
-(_cast_data)_E
+&_E->_timer
|
-(_cast_data)&_E
+&_E._timer
|
-_E
+&_E->_timer
)
 )

// If a timer has been configured without a data argument, it can be
// converted without regard to the callback argument, since it is unused.
@match_timer_function_unused_data@
expression _E;
identifier _timer;
identifier _callback;
@@

(
-setup_timer(&_E->_timer, _callback, 0);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, _callback, 0L);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, _callback, 0UL);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E._timer, _callback, 0);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, _callback, 0L);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, _callback, 0UL);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_timer, _callback, 0);
+timer_setup(&_timer, _callback, 0);
|
-setup_timer(&_timer, _callback, 0L);
+timer_setup(&_timer, _callback, 0);
|
-setup_timer(&_timer, _callback, 0UL);
+timer_setup(&_timer, _callback, 0);
|
-setup_timer(_timer, _callback, 0);
+timer_setup(_timer, _callback, 0);
|
-setup_timer(_timer, _callback, 0L);
+timer_setup(_timer, _callback, 0);
|
-setup_timer(_timer, _callback, 0UL);
+timer_setup(_timer, _callback, 0);
)

@change_callback_unused_data
 depends on match_timer_function_unused_data@
identifier match_timer_function_unused_data._callback;
type _origtype;
identifier _origarg;
@@

 void _callback(
-_origtype _origarg
+struct timer_list *unused
 )
 {
	... when != _origarg
 }

Signed-off-by: Kees Cook <keescook@chromium.org>
2017-11-21 15:57:07 -08:00

1170 lines
32 KiB
C
Raw Blame History

/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <linux/module.h>
#include <linux/mempool.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/skbuff.h>
#include <linux/interrupt.h>
#include <linux/spinlock.h>
#include <linux/workqueue.h>
#include <linux/if_ether.h>
#include <scsi/fc/fc_fip.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_transport.h>
#include <scsi/scsi_transport_fc.h>
#include <scsi/scsi_tcq.h>
#include <scsi/libfc.h>
#include <scsi/fc_frame.h>
#include "vnic_dev.h"
#include "vnic_intr.h"
#include "vnic_stats.h"
#include "fnic_io.h"
#include "fnic_fip.h"
#include "fnic.h"
#define PCI_DEVICE_ID_CISCO_FNIC 0x0045
/* Timer to poll notification area for events. Used for MSI interrupts */
#define FNIC_NOTIFY_TIMER_PERIOD (2 * HZ)
static struct kmem_cache *fnic_sgl_cache[FNIC_SGL_NUM_CACHES];
static struct kmem_cache *fnic_io_req_cache;
LIST_HEAD(fnic_list);
DEFINE_SPINLOCK(fnic_list_lock);
/* Supported devices by fnic module */
static struct pci_device_id fnic_id_table[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_CISCO, PCI_DEVICE_ID_CISCO_FNIC) },
{ 0, }
};
MODULE_DESCRIPTION(DRV_DESCRIPTION);
MODULE_AUTHOR("Abhijeet Joglekar <abjoglek@cisco.com>, "
"Joseph R. Eykholt <jeykholt@cisco.com>");
MODULE_LICENSE("GPL v2");
MODULE_VERSION(DRV_VERSION);
MODULE_DEVICE_TABLE(pci, fnic_id_table);
unsigned int fnic_log_level;
module_param(fnic_log_level, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(fnic_log_level, "bit mask of fnic logging levels");
unsigned int fnic_trace_max_pages = 16;
module_param(fnic_trace_max_pages, uint, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(fnic_trace_max_pages, "Total allocated memory pages "
"for fnic trace buffer");
unsigned int fnic_fc_trace_max_pages = 64;
module_param(fnic_fc_trace_max_pages, uint, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(fnic_fc_trace_max_pages,
"Total allocated memory pages for fc trace buffer");
static unsigned int fnic_max_qdepth = FNIC_DFLT_QUEUE_DEPTH;
module_param(fnic_max_qdepth, uint, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(fnic_max_qdepth, "Queue depth to report for each LUN");
static struct libfc_function_template fnic_transport_template = {
.frame_send = fnic_send,
.lport_set_port_id = fnic_set_port_id,
.fcp_abort_io = fnic_empty_scsi_cleanup,
.fcp_cleanup = fnic_empty_scsi_cleanup,
.exch_mgr_reset = fnic_exch_mgr_reset
};
static int fnic_slave_alloc(struct scsi_device *sdev)
{
struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
if (!rport || fc_remote_port_chkready(rport))
return -ENXIO;
scsi_change_queue_depth(sdev, fnic_max_qdepth);
return 0;
}
static struct scsi_host_template fnic_host_template = {
.module = THIS_MODULE,
.name = DRV_NAME,
.queuecommand = fnic_queuecommand,
.eh_timed_out = fc_eh_timed_out,
.eh_abort_handler = fnic_abort_cmd,
.eh_device_reset_handler = fnic_device_reset,
.eh_host_reset_handler = fnic_host_reset,
.slave_alloc = fnic_slave_alloc,
.change_queue_depth = scsi_change_queue_depth,
.this_id = -1,
.cmd_per_lun = 3,
.can_queue = FNIC_DFLT_IO_REQ,
.use_clustering = ENABLE_CLUSTERING,
.sg_tablesize = FNIC_MAX_SG_DESC_CNT,
.max_sectors = 0xffff,
.shost_attrs = fnic_attrs,
.track_queue_depth = 1,
};
static void
fnic_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout)
{
if (timeout)
rport->dev_loss_tmo = timeout;
else
rport->dev_loss_tmo = 1;
}
static void fnic_get_host_speed(struct Scsi_Host *shost);
static struct scsi_transport_template *fnic_fc_transport;
static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *);
static void fnic_reset_host_stats(struct Scsi_Host *);
static struct fc_function_template fnic_fc_functions = {
.show_host_node_name = 1,
.show_host_port_name = 1,
.show_host_supported_classes = 1,
.show_host_supported_fc4s = 1,
.show_host_active_fc4s = 1,
.show_host_maxframe_size = 1,
.show_host_port_id = 1,
.show_host_supported_speeds = 1,
.get_host_speed = fnic_get_host_speed,
.show_host_speed = 1,
.show_host_port_type = 1,
.get_host_port_state = fc_get_host_port_state,
.show_host_port_state = 1,
.show_host_symbolic_name = 1,
.show_rport_maxframe_size = 1,
.show_rport_supported_classes = 1,
.show_host_fabric_name = 1,
.show_starget_node_name = 1,
.show_starget_port_name = 1,
.show_starget_port_id = 1,
.show_rport_dev_loss_tmo = 1,
.set_rport_dev_loss_tmo = fnic_set_rport_dev_loss_tmo,
.issue_fc_host_lip = fnic_reset,
.get_fc_host_stats = fnic_get_stats,
.reset_fc_host_stats = fnic_reset_host_stats,
.dd_fcrport_size = sizeof(struct fc_rport_libfc_priv),
.terminate_rport_io = fnic_terminate_rport_io,
.bsg_request = fc_lport_bsg_request,
};
static void fnic_get_host_speed(struct Scsi_Host *shost)
{
struct fc_lport *lp = shost_priv(shost);
struct fnic *fnic = lport_priv(lp);
u32 port_speed = vnic_dev_port_speed(fnic->vdev);
/* Add in other values as they get defined in fw */
switch (port_speed) {
case DCEM_PORTSPEED_10G:
fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
break;
case DCEM_PORTSPEED_25G:
fc_host_speed(shost) = FC_PORTSPEED_25GBIT;
break;
case DCEM_PORTSPEED_40G:
case DCEM_PORTSPEED_4x10G:
fc_host_speed(shost) = FC_PORTSPEED_40GBIT;
break;
case DCEM_PORTSPEED_100G:
fc_host_speed(shost) = FC_PORTSPEED_100GBIT;
break;
default:
fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
break;
}
}
static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *host)
{
int ret;
struct fc_lport *lp = shost_priv(host);
struct fnic *fnic = lport_priv(lp);
struct fc_host_statistics *stats = &lp->host_stats;
struct vnic_stats *vs;
unsigned long flags;
if (time_before(jiffies, fnic->stats_time + HZ / FNIC_STATS_RATE_LIMIT))
return stats;
fnic->stats_time = jiffies;
spin_lock_irqsave(&fnic->fnic_lock, flags);
ret = vnic_dev_stats_dump(fnic->vdev, &fnic->stats);
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
if (ret) {
FNIC_MAIN_DBG(KERN_DEBUG, fnic->lport->host,
"fnic: Get vnic stats failed"
" 0x%x", ret);
return stats;
}
vs = fnic->stats;
stats->tx_frames = vs->tx.tx_unicast_frames_ok;
stats->tx_words = vs->tx.tx_unicast_bytes_ok / 4;
stats->rx_frames = vs->rx.rx_unicast_frames_ok;
stats->rx_words = vs->rx.rx_unicast_bytes_ok / 4;
stats->error_frames = vs->tx.tx_errors + vs->rx.rx_errors;
stats->dumped_frames = vs->tx.tx_drops + vs->rx.rx_drop;
stats->invalid_crc_count = vs->rx.rx_crc_errors;
stats->seconds_since_last_reset =
(jiffies - fnic->stats_reset_time) / HZ;
stats->fcp_input_megabytes = div_u64(fnic->fcp_input_bytes, 1000000);
stats->fcp_output_megabytes = div_u64(fnic->fcp_output_bytes, 1000000);
return stats;
}
/*
* fnic_dump_fchost_stats
* note : dumps fc_statistics into system logs
*/
void fnic_dump_fchost_stats(struct Scsi_Host *host,
struct fc_host_statistics *stats)
{
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: seconds since last reset = %llu\n",
stats->seconds_since_last_reset);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: tx frames = %llu\n",
stats->tx_frames);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: tx words = %llu\n",
stats->tx_words);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: rx frames = %llu\n",
stats->rx_frames);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: rx words = %llu\n",
stats->rx_words);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: lip count = %llu\n",
stats->lip_count);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: nos count = %llu\n",
stats->nos_count);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: error frames = %llu\n",
stats->error_frames);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: dumped frames = %llu\n",
stats->dumped_frames);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: link failure count = %llu\n",
stats->link_failure_count);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: loss of sync count = %llu\n",
stats->loss_of_sync_count);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: loss of signal count = %llu\n",
stats->loss_of_signal_count);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: prim seq protocol err count = %llu\n",
stats->prim_seq_protocol_err_count);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: invalid tx word count= %llu\n",
stats->invalid_tx_word_count);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: invalid crc count = %llu\n",
stats->invalid_crc_count);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: fcp input requests = %llu\n",
stats->fcp_input_requests);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: fcp output requests = %llu\n",
stats->fcp_output_requests);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: fcp control requests = %llu\n",
stats->fcp_control_requests);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: fcp input megabytes = %llu\n",
stats->fcp_input_megabytes);
FNIC_MAIN_NOTE(KERN_NOTICE, host,
"fnic: fcp output megabytes = %llu\n",
stats->fcp_output_megabytes);
return;
}
/*
* fnic_reset_host_stats : clears host stats
* note : called when reset_statistics set under sysfs dir
*/
static void fnic_reset_host_stats(struct Scsi_Host *host)
{
int ret;
struct fc_lport *lp = shost_priv(host);
struct fnic *fnic = lport_priv(lp);
struct fc_host_statistics *stats;
unsigned long flags;
/* dump current stats, before clearing them */
stats = fnic_get_stats(host);
fnic_dump_fchost_stats(host, stats);
spin_lock_irqsave(&fnic->fnic_lock, flags);
ret = vnic_dev_stats_clear(fnic->vdev);
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
if (ret) {
FNIC_MAIN_DBG(KERN_DEBUG, fnic->lport->host,
"fnic: Reset vnic stats failed"
" 0x%x", ret);
return;
}
fnic->stats_reset_time = jiffies;
memset(stats, 0, sizeof(*stats));
return;
}
void fnic_log_q_error(struct fnic *fnic)
{
unsigned int i;
u32 error_status;
for (i = 0; i < fnic->raw_wq_count; i++) {
error_status = ioread32(&fnic->wq[i].ctrl->error_status);
if (error_status)
shost_printk(KERN_ERR, fnic->lport->host,
"WQ[%d] error_status"
" %d\n", i, error_status);
}
for (i = 0; i < fnic->rq_count; i++) {
error_status = ioread32(&fnic->rq[i].ctrl->error_status);
if (error_status)
shost_printk(KERN_ERR, fnic->lport->host,
"RQ[%d] error_status"
" %d\n", i, error_status);
}
for (i = 0; i < fnic->wq_copy_count; i++) {
error_status = ioread32(&fnic->wq_copy[i].ctrl->error_status);
if (error_status)
shost_printk(KERN_ERR, fnic->lport->host,
"CWQ[%d] error_status"
" %d\n", i, error_status);
}
}
void fnic_handle_link_event(struct fnic *fnic)
{
unsigned long flags;
spin_lock_irqsave(&fnic->fnic_lock, flags);
if (fnic->stop_rx_link_events) {
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
return;
}
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
queue_work(fnic_event_queue, &fnic->link_work);
}
static int fnic_notify_set(struct fnic *fnic)
{
int err;
switch (vnic_dev_get_intr_mode(fnic->vdev)) {
case VNIC_DEV_INTR_MODE_INTX:
err = vnic_dev_notify_set(fnic->vdev, FNIC_INTX_NOTIFY);
break;
case VNIC_DEV_INTR_MODE_MSI:
err = vnic_dev_notify_set(fnic->vdev, -1);
break;
case VNIC_DEV_INTR_MODE_MSIX:
err = vnic_dev_notify_set(fnic->vdev, FNIC_MSIX_ERR_NOTIFY);
break;
default:
shost_printk(KERN_ERR, fnic->lport->host,
"Interrupt mode should be set up"
" before devcmd notify set %d\n",
vnic_dev_get_intr_mode(fnic->vdev));
err = -1;
break;
}
return err;
}
static void fnic_notify_timer(struct timer_list *t)
{
struct fnic *fnic = from_timer(fnic, t, notify_timer);
fnic_handle_link_event(fnic);
mod_timer(&fnic->notify_timer,
round_jiffies(jiffies + FNIC_NOTIFY_TIMER_PERIOD));
}
static void fnic_fip_notify_timer(struct timer_list *t)
{
struct fnic *fnic = from_timer(fnic, t, fip_timer);
fnic_handle_fip_timer(fnic);
}
static void fnic_notify_timer_start(struct fnic *fnic)
{
switch (vnic_dev_get_intr_mode(fnic->vdev)) {
case VNIC_DEV_INTR_MODE_MSI:
/*
* Schedule first timeout immediately. The driver is
* initiatialized and ready to look for link up notification
*/
mod_timer(&fnic->notify_timer, jiffies);
break;
default:
/* Using intr for notification for INTx/MSI-X */
break;
};
}
static int fnic_dev_wait(struct vnic_dev *vdev,
int (*start)(struct vnic_dev *, int),
int (*finished)(struct vnic_dev *, int *),
int arg)
{
unsigned long time;
int done;
int err;
int count;
count = 0;
err = start(vdev, arg);
if (err)
return err;
/* Wait for func to complete.
* Sometime schedule_timeout_uninterruptible take long time
* to wake up so we do not retry as we are only waiting for
* 2 seconds in while loop. By adding count, we make sure
* we try atleast three times before returning -ETIMEDOUT
*/
time = jiffies + (HZ * 2);
do {
err = finished(vdev, &done);
count++;
if (err)
return err;
if (done)
return 0;
schedule_timeout_uninterruptible(HZ / 10);
} while (time_after(time, jiffies) || (count < 3));
return -ETIMEDOUT;
}
static int fnic_cleanup(struct fnic *fnic)
{
unsigned int i;
int err;
vnic_dev_disable(fnic->vdev);
for (i = 0; i < fnic->intr_count; i++)
vnic_intr_mask(&fnic->intr[i]);
for (i = 0; i < fnic->rq_count; i++) {
err = vnic_rq_disable(&fnic->rq[i]);
if (err)
return err;
}
for (i = 0; i < fnic->raw_wq_count; i++) {
err = vnic_wq_disable(&fnic->wq[i]);
if (err)
return err;
}
for (i = 0; i < fnic->wq_copy_count; i++) {
err = vnic_wq_copy_disable(&fnic->wq_copy[i]);
if (err)
return err;
}
/* Clean up completed IOs and FCS frames */
fnic_wq_copy_cmpl_handler(fnic, -1);
fnic_wq_cmpl_handler(fnic, -1);
fnic_rq_cmpl_handler(fnic, -1);
/* Clean up the IOs and FCS frames that have not completed */
for (i = 0; i < fnic->raw_wq_count; i++)
vnic_wq_clean(&fnic->wq[i], fnic_free_wq_buf);
for (i = 0; i < fnic->rq_count; i++)
vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf);
for (i = 0; i < fnic->wq_copy_count; i++)
vnic_wq_copy_clean(&fnic->wq_copy[i],
fnic_wq_copy_cleanup_handler);
for (i = 0; i < fnic->cq_count; i++)
vnic_cq_clean(&fnic->cq[i]);
for (i = 0; i < fnic->intr_count; i++)
vnic_intr_clean(&fnic->intr[i]);
mempool_destroy(fnic->io_req_pool);
for (i = 0; i < FNIC_SGL_NUM_CACHES; i++)
mempool_destroy(fnic->io_sgl_pool[i]);
return 0;
}
static void fnic_iounmap(struct fnic *fnic)
{
if (fnic->bar0.vaddr)
iounmap(fnic->bar0.vaddr);
}
/**
* fnic_get_mac() - get assigned data MAC address for FIP code.
* @lport: local port.
*/
static u8 *fnic_get_mac(struct fc_lport *lport)
{
struct fnic *fnic = lport_priv(lport);
return fnic->data_src_addr;
}
static void fnic_set_vlan(struct fnic *fnic, u16 vlan_id)
{
u16 old_vlan;
old_vlan = vnic_dev_set_default_vlan(fnic->vdev, vlan_id);
}
static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
struct Scsi_Host *host;
struct fc_lport *lp;
struct fnic *fnic;
mempool_t *pool;
int err;
int i;
unsigned long flags;
/*
* Allocate SCSI Host and set up association between host,
* local port, and fnic
*/
lp = libfc_host_alloc(&fnic_host_template, sizeof(struct fnic));
if (!lp) {
printk(KERN_ERR PFX "Unable to alloc libfc local port\n");
err = -ENOMEM;
goto err_out;
}
host = lp->host;
fnic = lport_priv(lp);
fnic->lport = lp;
fnic->ctlr.lp = lp;
snprintf(fnic->name, sizeof(fnic->name) - 1, "%s%d", DRV_NAME,
host->host_no);
host->transportt = fnic_fc_transport;
err = fnic_stats_debugfs_init(fnic);
if (err) {
shost_printk(KERN_ERR, fnic->lport->host,
"Failed to initialize debugfs for stats\n");
fnic_stats_debugfs_remove(fnic);
}
/* Setup PCI resources */
pci_set_drvdata(pdev, fnic);
fnic->pdev = pdev;
err = pci_enable_device(pdev);
if (err) {
shost_printk(KERN_ERR, fnic->lport->host,
"Cannot enable PCI device, aborting.\n");
goto err_out_free_hba;
}
err = pci_request_regions(pdev, DRV_NAME);
if (err) {
shost_printk(KERN_ERR, fnic->lport->host,
"Cannot enable PCI resources, aborting\n");
goto err_out_disable_device;
}
pci_set_master(pdev);
/* Query PCI controller on system for DMA addressing
* limitation for the device. Try 64-bit first, and
* fail to 32-bit.
*/
err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
if (err) {
err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
if (err) {
shost_printk(KERN_ERR, fnic->lport->host,
"No usable DMA configuration "
"aborting\n");
goto err_out_release_regions;
}
err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
if (err) {
shost_printk(KERN_ERR, fnic->lport->host,
"Unable to obtain 32-bit DMA "
"for consistent allocations, aborting.\n");
goto err_out_release_regions;
}
} else {
err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
if (err) {
shost_printk(KERN_ERR, fnic->lport->host,
"Unable to obtain 64-bit DMA "
"for consistent allocations, aborting.\n");
goto err_out_release_regions;
}
}
/* Map vNIC resources from BAR0 */
if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
shost_printk(KERN_ERR, fnic->lport->host,
"BAR0 not memory-map'able, aborting.\n");
err = -ENODEV;
goto err_out_release_regions;
}
fnic->bar0.vaddr = pci_iomap(pdev, 0, 0);
fnic->bar0.bus_addr = pci_resource_start(pdev, 0);
fnic->bar0.len = pci_resource_len(pdev, 0);
if (!fnic->bar0.vaddr) {
shost_printk(KERN_ERR, fnic->lport->host,
"Cannot memory-map BAR0 res hdr, "
"aborting.\n");
err = -ENODEV;
goto err_out_release_regions;
}
fnic->vdev = vnic_dev_register(NULL, fnic, pdev, &fnic->bar0);
if (!fnic->vdev) {
shost_printk(KERN_ERR, fnic->lport->host,
"vNIC registration failed, "
"aborting.\n");
err = -ENODEV;
goto err_out_iounmap;
}
err = fnic_dev_wait(fnic->vdev, vnic_dev_open,
vnic_dev_open_done, 0);
if (err) {
shost_printk(KERN_ERR, fnic->lport->host,
"vNIC dev open failed, aborting.\n");
goto err_out_vnic_unregister;
}
err = vnic_dev_init(fnic->vdev, 0);
if (err) {
shost_printk(KERN_ERR, fnic->lport->host,
"vNIC dev init failed, aborting.\n");
goto err_out_dev_close;
}
err = vnic_dev_mac_addr(fnic->vdev, fnic->ctlr.ctl_src_addr);
if (err) {
shost_printk(KERN_ERR, fnic->lport->host,
"vNIC get MAC addr failed \n");
goto err_out_dev_close;
}
/* set data_src for point-to-point mode and to keep it non-zero */
memcpy(fnic->data_src_addr, fnic->ctlr.ctl_src_addr, ETH_ALEN);
/* Get vNIC configuration */
err = fnic_get_vnic_config(fnic);
if (err) {
shost_printk(KERN_ERR, fnic->lport->host,
"Get vNIC configuration failed, "
"aborting.\n");
goto err_out_dev_close;
}
/* Configure Maximum Outstanding IO reqs*/
if (fnic->config.io_throttle_count != FNIC_UCSM_DFLT_THROTTLE_CNT_BLD) {
host->can_queue = min_t(u32, FNIC_MAX_IO_REQ,
max_t(u32, FNIC_MIN_IO_REQ,
fnic->config.io_throttle_count));
}
fnic->fnic_max_tag_id = host->can_queue;
host->max_lun = fnic->config.luns_per_tgt;
host->max_id = FNIC_MAX_FCP_TARGET;
host->max_cmd_len = FCOE_MAX_CMD_LEN;
fnic_get_res_counts(fnic);
err = fnic_set_intr_mode(fnic);
if (err) {
shost_printk(KERN_ERR, fnic->lport->host,
"Failed to set intr mode, "
"aborting.\n");
goto err_out_dev_close;
}
err = fnic_alloc_vnic_resources(fnic);
if (err) {
shost_printk(KERN_ERR, fnic->lport->host,
"Failed to alloc vNIC resources, "
"aborting.\n");
goto err_out_clear_intr;
}
/* initialize all fnic locks */
spin_lock_init(&fnic->fnic_lock);
for (i = 0; i < FNIC_WQ_MAX; i++)
spin_lock_init(&fnic->wq_lock[i]);
for (i = 0; i < FNIC_WQ_COPY_MAX; i++) {
spin_lock_init(&fnic->wq_copy_lock[i]);
fnic->wq_copy_desc_low[i] = DESC_CLEAN_LOW_WATERMARK;
fnic->fw_ack_recd[i] = 0;
fnic->fw_ack_index[i] = -1;
}
for (i = 0; i < FNIC_IO_LOCKS; i++)
spin_lock_init(&fnic->io_req_lock[i]);
fnic->io_req_pool = mempool_create_slab_pool(2, fnic_io_req_cache);
if (!fnic->io_req_pool)
goto err_out_free_resources;
pool = mempool_create_slab_pool(2, fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
if (!pool)
goto err_out_free_ioreq_pool;
fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT] = pool;
pool = mempool_create_slab_pool(2, fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
if (!pool)
goto err_out_free_dflt_pool;
fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX] = pool;
/* setup vlan config, hw inserts vlan header */
fnic->vlan_hw_insert = 1;
fnic->vlan_id = 0;
/* Initialize the FIP fcoe_ctrl struct */
fnic->ctlr.send = fnic_eth_send;
fnic->ctlr.update_mac = fnic_update_mac;
fnic->ctlr.get_src_addr = fnic_get_mac;
if (fnic->config.flags & VFCF_FIP_CAPABLE) {
shost_printk(KERN_INFO, fnic->lport->host,
"firmware supports FIP\n");
/* enable directed and multicast */
vnic_dev_packet_filter(fnic->vdev, 1, 1, 0, 0, 0);
vnic_dev_add_addr(fnic->vdev, FIP_ALL_ENODE_MACS);
vnic_dev_add_addr(fnic->vdev, fnic->ctlr.ctl_src_addr);
fnic->set_vlan = fnic_set_vlan;
fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_AUTO);
timer_setup(&fnic->fip_timer, fnic_fip_notify_timer, 0);
spin_lock_init(&fnic->vlans_lock);
INIT_WORK(&fnic->fip_frame_work, fnic_handle_fip_frame);
INIT_WORK(&fnic->event_work, fnic_handle_event);
skb_queue_head_init(&fnic->fip_frame_queue);
INIT_LIST_HEAD(&fnic->evlist);
INIT_LIST_HEAD(&fnic->vlans);
} else {
shost_printk(KERN_INFO, fnic->lport->host,
"firmware uses non-FIP mode\n");
fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_NON_FIP);
fnic->ctlr.state = FIP_ST_NON_FIP;
}
fnic->state = FNIC_IN_FC_MODE;
atomic_set(&fnic->in_flight, 0);
fnic->state_flags = FNIC_FLAGS_NONE;
/* Enable hardware stripping of vlan header on ingress */
fnic_set_nic_config(fnic, 0, 0, 0, 0, 0, 0, 1);
/* Setup notification buffer area */
err = fnic_notify_set(fnic);
if (err) {
shost_printk(KERN_ERR, fnic->lport->host,
"Failed to alloc notify buffer, aborting.\n");
goto err_out_free_max_pool;
}
/* Setup notify timer when using MSI interrupts */
if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI)
timer_setup(&fnic->notify_timer, fnic_notify_timer, 0);
/* allocate RQ buffers and post them to RQ*/
for (i = 0; i < fnic->rq_count; i++) {
err = vnic_rq_fill(&fnic->rq[i], fnic_alloc_rq_frame);
if (err) {
shost_printk(KERN_ERR, fnic->lport->host,
"fnic_alloc_rq_frame can't alloc "
"frame\n");
goto err_out_free_rq_buf;
}
}
/*
* Initialization done with PCI system, hardware, firmware.
* Add host to SCSI
*/
err = scsi_add_host(lp->host, &pdev->dev);
if (err) {
shost_printk(KERN_ERR, fnic->lport->host,
"fnic: scsi_add_host failed...exiting\n");
goto err_out_free_rq_buf;
}
/* Start local port initiatialization */
lp->link_up = 0;
lp->max_retry_count = fnic->config.flogi_retries;
lp->max_rport_retry_count = fnic->config.plogi_retries;
lp->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
FCP_SPPF_CONF_COMPL);
if (fnic->config.flags & VFCF_FCP_SEQ_LVL_ERR)
lp->service_params |= FCP_SPPF_RETRY;
lp->boot_time = jiffies;
lp->e_d_tov = fnic->config.ed_tov;
lp->r_a_tov = fnic->config.ra_tov;
lp->link_supported_speeds = FC_PORTSPEED_10GBIT;
fc_set_wwnn(lp, fnic->config.node_wwn);
fc_set_wwpn(lp, fnic->config.port_wwn);
fcoe_libfc_config(lp, &fnic->ctlr, &fnic_transport_template, 0);
if (!fc_exch_mgr_alloc(lp, FC_CLASS_3, FCPIO_HOST_EXCH_RANGE_START,
FCPIO_HOST_EXCH_RANGE_END, NULL)) {
err = -ENOMEM;
goto err_out_remove_scsi_host;
}
fc_lport_init_stats(lp);
fnic->stats_reset_time = jiffies;
fc_lport_config(lp);
if (fc_set_mfs(lp, fnic->config.maxdatafieldsize +
sizeof(struct fc_frame_header))) {
err = -EINVAL;
goto err_out_free_exch_mgr;
}
fc_host_maxframe_size(lp->host) = lp->mfs;
fc_host_dev_loss_tmo(lp->host) = fnic->config.port_down_timeout / 1000;
sprintf(fc_host_symbolic_name(lp->host),
DRV_NAME " v" DRV_VERSION " over %s", fnic->name);
spin_lock_irqsave(&fnic_list_lock, flags);
list_add_tail(&fnic->list, &fnic_list);
spin_unlock_irqrestore(&fnic_list_lock, flags);
INIT_WORK(&fnic->link_work, fnic_handle_link);
INIT_WORK(&fnic->frame_work, fnic_handle_frame);
skb_queue_head_init(&fnic->frame_queue);
skb_queue_head_init(&fnic->tx_queue);
/* Enable all queues */
for (i = 0; i < fnic->raw_wq_count; i++)
vnic_wq_enable(&fnic->wq[i]);
for (i = 0; i < fnic->rq_count; i++)
vnic_rq_enable(&fnic->rq[i]);
for (i = 0; i < fnic->wq_copy_count; i++)
vnic_wq_copy_enable(&fnic->wq_copy[i]);
fc_fabric_login(lp);
vnic_dev_enable(fnic->vdev);
err = fnic_request_intr(fnic);
if (err) {
shost_printk(KERN_ERR, fnic->lport->host,
"Unable to request irq.\n");
goto err_out_free_exch_mgr;
}
for (i = 0; i < fnic->intr_count; i++)
vnic_intr_unmask(&fnic->intr[i]);
fnic_notify_timer_start(fnic);
return 0;
err_out_free_exch_mgr:
fc_exch_mgr_free(lp);
err_out_remove_scsi_host:
fc_remove_host(lp->host);
scsi_remove_host(lp->host);
err_out_free_rq_buf:
for (i = 0; i < fnic->rq_count; i++)
vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf);
vnic_dev_notify_unset(fnic->vdev);
err_out_free_max_pool:
mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX]);
err_out_free_dflt_pool:
mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT]);
err_out_free_ioreq_pool:
mempool_destroy(fnic->io_req_pool);
err_out_free_resources:
fnic_free_vnic_resources(fnic);
err_out_clear_intr:
fnic_clear_intr_mode(fnic);
err_out_dev_close:
vnic_dev_close(fnic->vdev);
err_out_vnic_unregister:
vnic_dev_unregister(fnic->vdev);
err_out_iounmap:
fnic_iounmap(fnic);
err_out_release_regions:
pci_release_regions(pdev);
err_out_disable_device:
pci_disable_device(pdev);
err_out_free_hba:
fnic_stats_debugfs_remove(fnic);
scsi_host_put(lp->host);
err_out:
return err;
}
static void fnic_remove(struct pci_dev *pdev)
{
struct fnic *fnic = pci_get_drvdata(pdev);
struct fc_lport *lp = fnic->lport;
unsigned long flags;
/*
* Mark state so that the workqueue thread stops forwarding
* received frames and link events to the local port. ISR and
* other threads that can queue work items will also stop
* creating work items on the fnic workqueue
*/
spin_lock_irqsave(&fnic->fnic_lock, flags);
fnic->stop_rx_link_events = 1;
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI)
del_timer_sync(&fnic->notify_timer);
/*
* Flush the fnic event queue. After this call, there should
* be no event queued for this fnic device in the workqueue
*/
flush_workqueue(fnic_event_queue);
skb_queue_purge(&fnic->frame_queue);
skb_queue_purge(&fnic->tx_queue);
if (fnic->config.flags & VFCF_FIP_CAPABLE) {
del_timer_sync(&fnic->fip_timer);
skb_queue_purge(&fnic->fip_frame_queue);
fnic_fcoe_reset_vlans(fnic);
fnic_fcoe_evlist_free(fnic);
}
/*
* Log off the fabric. This stops all remote ports, dns port,
* logs off the fabric. This flushes all rport, disc, lport work
* before returning
*/
fc_fabric_logoff(fnic->lport);
spin_lock_irqsave(&fnic->fnic_lock, flags);
fnic->in_remove = 1;
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
fcoe_ctlr_destroy(&fnic->ctlr);
fc_lport_destroy(lp);
fnic_stats_debugfs_remove(fnic);
/*
* This stops the fnic device, masks all interrupts. Completed
* CQ entries are drained. Posted WQ/RQ/Copy-WQ entries are
* cleaned up
*/
fnic_cleanup(fnic);
BUG_ON(!skb_queue_empty(&fnic->frame_queue));
BUG_ON(!skb_queue_empty(&fnic->tx_queue));
spin_lock_irqsave(&fnic_list_lock, flags);
list_del(&fnic->list);
spin_unlock_irqrestore(&fnic_list_lock, flags);
fc_remove_host(fnic->lport->host);
scsi_remove_host(fnic->lport->host);
fc_exch_mgr_free(fnic->lport);
vnic_dev_notify_unset(fnic->vdev);
fnic_free_intr(fnic);
fnic_free_vnic_resources(fnic);
fnic_clear_intr_mode(fnic);
vnic_dev_close(fnic->vdev);
vnic_dev_unregister(fnic->vdev);
fnic_iounmap(fnic);
pci_release_regions(pdev);
pci_disable_device(pdev);
scsi_host_put(lp->host);
}
static struct pci_driver fnic_driver = {
.name = DRV_NAME,
.id_table = fnic_id_table,
.probe = fnic_probe,
.remove = fnic_remove,
};
static int __init fnic_init_module(void)
{
size_t len;
int err = 0;
printk(KERN_INFO PFX "%s, ver %s\n", DRV_DESCRIPTION, DRV_VERSION);
/* Create debugfs entries for fnic */
err = fnic_debugfs_init();
if (err < 0) {
printk(KERN_ERR PFX "Failed to create fnic directory "
"for tracing and stats logging\n");
fnic_debugfs_terminate();
}
/* Allocate memory for trace buffer */
err = fnic_trace_buf_init();
if (err < 0) {
printk(KERN_ERR PFX
"Trace buffer initialization Failed. "
"Fnic Tracing utility is disabled\n");
fnic_trace_free();
}
/* Allocate memory for fc trace buffer */
err = fnic_fc_trace_init();
if (err < 0) {
printk(KERN_ERR PFX "FC trace buffer initialization Failed "
"FC frame tracing utility is disabled\n");
fnic_fc_trace_free();
}
/* Create a cache for allocation of default size sgls */
len = sizeof(struct fnic_dflt_sgl_list);
fnic_sgl_cache[FNIC_SGL_CACHE_DFLT] = kmem_cache_create
("fnic_sgl_dflt", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN,
SLAB_HWCACHE_ALIGN,
NULL);
if (!fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]) {
printk(KERN_ERR PFX "failed to create fnic dflt sgl slab\n");
err = -ENOMEM;
goto err_create_fnic_sgl_slab_dflt;
}
/* Create a cache for allocation of max size sgls*/
len = sizeof(struct fnic_sgl_list);
fnic_sgl_cache[FNIC_SGL_CACHE_MAX] = kmem_cache_create
("fnic_sgl_max", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN,
SLAB_HWCACHE_ALIGN,
NULL);
if (!fnic_sgl_cache[FNIC_SGL_CACHE_MAX]) {
printk(KERN_ERR PFX "failed to create fnic max sgl slab\n");
err = -ENOMEM;
goto err_create_fnic_sgl_slab_max;
}
/* Create a cache of io_req structs for use via mempool */
fnic_io_req_cache = kmem_cache_create("fnic_io_req",
sizeof(struct fnic_io_req),
0, SLAB_HWCACHE_ALIGN, NULL);
if (!fnic_io_req_cache) {
printk(KERN_ERR PFX "failed to create fnic io_req slab\n");
err = -ENOMEM;
goto err_create_fnic_ioreq_slab;
}
fnic_event_queue = create_singlethread_workqueue("fnic_event_wq");
if (!fnic_event_queue) {
printk(KERN_ERR PFX "fnic work queue create failed\n");
err = -ENOMEM;
goto err_create_fnic_workq;
}
spin_lock_init(&fnic_list_lock);
INIT_LIST_HEAD(&fnic_list);
fnic_fip_queue = create_singlethread_workqueue("fnic_fip_q");
if (!fnic_fip_queue) {
printk(KERN_ERR PFX "fnic FIP work queue create failed\n");
err = -ENOMEM;
goto err_create_fip_workq;
}
fnic_fc_transport = fc_attach_transport(&fnic_fc_functions);
if (!fnic_fc_transport) {
printk(KERN_ERR PFX "fc_attach_transport error\n");
err = -ENOMEM;
goto err_fc_transport;
}
/* register the driver with PCI system */
err = pci_register_driver(&fnic_driver);
if (err < 0) {
printk(KERN_ERR PFX "pci register error\n");
goto err_pci_register;
}
return err;
err_pci_register:
fc_release_transport(fnic_fc_transport);
err_fc_transport:
destroy_workqueue(fnic_fip_queue);
err_create_fip_workq:
destroy_workqueue(fnic_event_queue);
err_create_fnic_workq:
kmem_cache_destroy(fnic_io_req_cache);
err_create_fnic_ioreq_slab:
kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
err_create_fnic_sgl_slab_max:
kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
err_create_fnic_sgl_slab_dflt:
fnic_trace_free();
fnic_fc_trace_free();
fnic_debugfs_terminate();
return err;
}
static void __exit fnic_cleanup_module(void)
{
pci_unregister_driver(&fnic_driver);
destroy_workqueue(fnic_event_queue);
if (fnic_fip_queue) {
flush_workqueue(fnic_fip_queue);
destroy_workqueue(fnic_fip_queue);
}
kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
kmem_cache_destroy(fnic_io_req_cache);
fc_release_transport(fnic_fc_transport);
fnic_trace_free();
fnic_fc_trace_free();
fnic_debugfs_terminate();
}
module_init(fnic_init_module);
module_exit(fnic_cleanup_module);
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