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Merge gregkh@master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6

This commit is contained in:
Greg Kroah-Hartman 2006-08-26 13:04:23 -07:00
parent 62250b3bb5 0db99e3359
commit f834c75542
47 changed files with 1076 additions and 1268 deletions
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123
Documentation/scsi/ChangeLog.megaraid
View File

@ -1,3 +1,126 @@
Release Date : Fri May 19 09:31:45 EST 2006 - Seokmann Ju <sju@lsil.com>
Current Version : 2.20.4.9 (scsi module), 2.20.2.6 (cmm module)
Older Version : 2.20.4.8 (scsi module), 2.20.2.6 (cmm module)
1. Fixed a bug in megaraid_init_mbox().
Customer reported "garbage in file on x86_64 platform".
Root Cause: the driver registered controllers as 64-bit DMA capable
for those which are not support it.
Fix: Made change in the function inserting identification machanism
identifying 64-bit DMA capable controllers.
> -----Original Message-----
> From: Vasily Averin [mailto:vvs@sw.ru]
> Sent: Thursday, May 04, 2006 2:49 PM
> To: linux-scsi@vger.kernel.org; Kolli, Neela; Mukker, Atul;
> Ju, Seokmann; Bagalkote, Sreenivas;
> James.Bottomley@SteelEye.com; devel@openvz.org
> Subject: megaraid_mbox: garbage in file
>
> Hello all,
>
> I've investigated customers claim on the unstable work of
> their node and found a
> strange effect: reading from some files leads to the
> "attempt to access beyond end of device" messages.
>
> I've checked filesystem, memory on the node, motherboard BIOS
> version, but it
> does not help and issue still has been reproduced by simple
> file reading.
>
> Reproducer is simple:
>
> echo 0xffffffff >/proc/sys/dev/scsi/logging_level ;
> cat /vz/private/101/root/etc/ld.so.cache >/tmp/ttt ;
> echo 0 >/proc/sys/dev/scsi/logging
>
> It leads to the following messages in dmesg
>
> sd_init_command: disk=sda, block=871769260, count=26
> sda : block=871769260
> sda : reading 26/26 512 byte blocks.
> scsi_add_timer: scmd: f79ed980, time: 7500, (c02b1420)
> sd 0:1:0:0: send 0xf79ed980 sd 0:1:0:0:
> command: Read (10): 28 00 33 f6 24 ac 00 00 1a 00
> buffer = 0xf7cfb540, bufflen = 13312, done = 0xc0366b40,
> queuecommand 0xc0344010
> leaving scsi_dispatch_cmnd()
> scsi_delete_timer: scmd: f79ed980, rtn: 1
> sd 0:1:0:0: done 0xf79ed980 SUCCESS 0 sd 0:1:0:0:
> command: Read (10): 28 00 33 f6 24 ac 00 00 1a 00
> scsi host busy 1 failed 0
> sd 0:1:0:0: Notifying upper driver of completion (result 0)
> sd_rw_intr: sda: res=0x0
> 26 sectors total, 13312 bytes done.
> use_sg is 4
> attempt to access beyond end of device
> sda6: rw=0, want=1044134458, limit=951401367
> Buffer I/O error on device sda6, logical block 522067228
> attempt to access beyond end of device
2. When INQUIRY with EVPD bit set issued to the MegaRAID controller,
system memory gets corrupted.
Root Cause: MegaRAID F/W handle the INQUIRY with EVPD bit set
incorrectly.
Fix: MegaRAID F/W has fixed the problem and being process of release,
soon. Meanwhile, driver will filter out the request.
3. One of member in the data structure of the driver leads unaligne
issue on 64-bit platform.
Customer reporeted "kernel unaligned access addrss" issue when
application communicates with MegaRAID HBA driver.
Root Cause: in uioc_t structure, one of member had misaligned and it
led system to display the error message.
Fix: A patch submitted to community from following folk.
> -----Original Message-----
> From: linux-scsi-owner@vger.kernel.org
> [mailto:linux-scsi-owner@vger.kernel.org] On Behalf Of Sakurai Hiroomi
> Sent: Wednesday, July 12, 2006 4:20 AM
> To: linux-scsi@vger.kernel.org; linux-kernel@vger.kernel.org
> Subject: Re: Help: strange messages from kernel on IA64 platform
>
> Hi,
>
> I saw same message.
>
> When GAM(Global Array Manager) is started, The following
> message output.
> kernel: kernel unaligned access to 0xe0000001fe1080d4,
> ip=0xa000000200053371
>
> The uioc structure used by ioctl is defined by packed,
> the allignment of each member are disturbed.
> In a 64 bit structure, the allignment of member doesn't fit 64 bit
> boundary. this causes this messages.
> In a 32 bit structure, we don't see the message because the allinment
> of member fit 32 bit boundary even if packed is specified.
>
> patch
> I Add 32 bit dummy member to fit 64 bit boundary. I tested.
> We confirmed this patch fix the problem by IA64 server.
>
> **************************************************************
> ****************
> --- linux-2.6.9/drivers/scsi/megaraid/megaraid_ioctl.h.orig
> 2006-04-03 17:13:03.000000000 +0900
> +++ linux-2.6.9/drivers/scsi/megaraid/megaraid_ioctl.h
> 2006-04-03 17:14:09.000000000 +0900
> @@ -132,6 +132,10 @@
> /* Driver Data: */
> void __user * user_data;
> uint32_t user_data_len;
> +
> + /* 64bit alignment */
> + uint32_t pad_0xBC;
> +
> mraid_passthru_t __user *user_pthru;
>
> mraid_passthru_t *pthru32;
> **************************************************************
> ****************
Release Date : Mon Apr 11 12:27:22 EST 2006 - Seokmann Ju <sju@lsil.com>
Current Version : 2.20.4.8 (scsi module), 2.20.2.6 (cmm module)
Older Version : 2.20.4.7 (scsi module), 2.20.2.6 (cmm module)

3
arch/ia64/hp/sim/simscsi.c
View File

@ -244,7 +244,8 @@ static void simscsi_fillresult(struct scsi_cmnd *sc, char *buf, unsigned len)
if (scatterlen == 0)
memcpy(sc->request_buffer, buf, len);
else for (slp = (struct scatterlist *)sc->request_buffer; scatterlen-- > 0 && len > 0; slp++) {
else for (slp = (struct scatterlist *)sc->request_buffer;
scatterlen-- > 0 && len > 0; slp++) {
unsigned thislen = min(len, slp->length);
memcpy(page_address(slp->page) + slp->offset, buf, thislen);

22
drivers/infiniband/ulp/iser/iscsi_iser.c
View File

@ -378,21 +378,6 @@ iscsi_iser_conn_start(struct iscsi_cls_conn *cls_conn)
return iser_conn_set_full_featured_mode(conn);
}
static void
iscsi_iser_conn_terminate(struct iscsi_conn *conn)
{
struct iscsi_iser_conn *iser_conn = conn->dd_data;
struct iser_conn *ib_conn = iser_conn->ib_conn;
BUG_ON(!ib_conn);
/* starts conn teardown process, waits until all previously *
* posted buffers get flushed, deallocates all conn resources */
iser_conn_terminate(ib_conn);
iser_conn->ib_conn = NULL;
conn->recv_lock = NULL;
}
static struct iscsi_transport iscsi_iser_transport;
static struct iscsi_cls_session *
@ -555,13 +540,13 @@ iscsi_iser_ep_poll(__u64 ep_handle, int timeout_ms)
static void
iscsi_iser_ep_disconnect(__u64 ep_handle)
{
struct iser_conn *ib_conn = iscsi_iser_ib_conn_lookup(ep_handle);
struct iser_conn *ib_conn;
ib_conn = iscsi_iser_ib_conn_lookup(ep_handle);
if (!ib_conn)
return;
iser_err("ib conn %p state %d\n",ib_conn, ib_conn->state);
iser_conn_terminate(ib_conn);
}
@ -614,9 +599,6 @@ static struct iscsi_transport iscsi_iser_transport = {
.get_session_param = iscsi_session_get_param,
.start_conn = iscsi_iser_conn_start,
.stop_conn = iscsi_conn_stop,
/* these are called as part of conn recovery */
.suspend_conn_recv = NULL, /* FIXME is/how this relvant to iser? */
.terminate_conn = iscsi_iser_conn_terminate,
/* IO */
.send_pdu = iscsi_conn_send_pdu,
.get_stats = iscsi_iser_conn_get_stats,

1
drivers/message/fusion/mptbase.h
View File

@ -640,7 +640,6 @@ typedef struct _MPT_ADAPTER
struct work_struct fc_setup_reset_work;
struct list_head fc_rports;
spinlock_t fc_rescan_work_lock;
int fc_rescan_work_count;
struct work_struct fc_rescan_work;
char fc_rescan_work_q_name[KOBJ_NAME_LEN];
struct workqueue_struct *fc_rescan_work_q;

28
drivers/message/fusion/mptfc.c
View File

@ -669,7 +669,10 @@ mptfc_GetFcPortPage0(MPT_ADAPTER *ioc, int portnum)
* if still doing discovery,
* hang loose a while until finished
*/
if (pp0dest->PortState == MPI_FCPORTPAGE0_PORTSTATE_UNKNOWN) {
if ((pp0dest->PortState == MPI_FCPORTPAGE0_PORTSTATE_UNKNOWN) ||
(pp0dest->PortState == MPI_FCPORTPAGE0_PORTSTATE_ONLINE &&
(pp0dest->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_TYPE_MASK)
== MPI_FCPORTPAGE0_FLAGS_ATTACH_NO_INIT)) {
if (count-- > 0) {
msleep(100);
goto try_again;
@ -895,12 +898,9 @@ mptfc_rescan_devices(void *arg)
{
MPT_ADAPTER *ioc = (MPT_ADAPTER *)arg;
int ii;
int work_to_do;
u64 pn;
unsigned long flags;
struct mptfc_rport_info *ri;
do {
/* start by tagging all ports as missing */
list_for_each_entry(ri, &ioc->fc_rports, list) {
if (ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED) {
@ -914,8 +914,8 @@ mptfc_rescan_devices(void *arg)
*/
for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
(void) mptfc_GetFcPortPage0(ioc, ii);
mptfc_init_host_attr(ioc,ii); /* refresh */
mptfc_GetFcDevPage0(ioc,ii,mptfc_register_dev);
mptfc_init_host_attr(ioc, ii); /* refresh */
mptfc_GetFcDevPage0(ioc, ii, mptfc_register_dev);
}
/* delete devices still missing */
@ -937,17 +937,6 @@ mptfc_rescan_devices(void *arg)
(unsigned long long)pn));
}
}
/*
* allow multiple passes as target state
* might have changed during scan
*/
spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
if (ioc->fc_rescan_work_count > 2) /* only need one more */
ioc->fc_rescan_work_count = 2;
work_to_do = --ioc->fc_rescan_work_count;
spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
} while (work_to_do);
}
static int
@ -1159,7 +1148,6 @@ mptfc_probe(struct pci_dev *pdev, const struct pci_device_id *id)
* by doing it via the workqueue, some locking is eliminated
*/
ioc->fc_rescan_work_count = 1;
queue_work(ioc->fc_rescan_work_q, &ioc->fc_rescan_work);
flush_workqueue(ioc->fc_rescan_work_q);
@ -1202,11 +1190,9 @@ mptfc_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply)
case MPI_EVENT_RESCAN:
spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
if (ioc->fc_rescan_work_q) {
if (ioc->fc_rescan_work_count++ == 0) {
queue_work(ioc->fc_rescan_work_q,
&ioc->fc_rescan_work);
}
}
spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
break;
default:
@ -1248,11 +1234,9 @@ mptfc_ioc_reset(MPT_ADAPTER *ioc, int reset_phase)
mptfc_SetFcPortPage1_defaults(ioc);
spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
if (ioc->fc_rescan_work_q) {
if (ioc->fc_rescan_work_count++ == 0) {
queue_work(ioc->fc_rescan_work_q,
&ioc->fc_rescan_work);
}
}
spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
}
return 1;

120
drivers/s390/scsi/zfcp_aux.c
View File

@ -112,6 +112,105 @@ _zfcp_hex_dump(char *addr, int count)
printk("\n");
}
/****************************************************************/
/****** Functions to handle the request ID hash table ********/
/****************************************************************/
#define ZFCP_LOG_AREA ZFCP_LOG_AREA_FSF
static int zfcp_reqlist_init(struct zfcp_adapter *adapter)
{
int i;
adapter->req_list = kcalloc(REQUEST_LIST_SIZE, sizeof(struct list_head),
GFP_KERNEL);
if (!adapter->req_list)
return -ENOMEM;
for (i=0; i<REQUEST_LIST_SIZE; i++)
INIT_LIST_HEAD(&adapter->req_list[i]);
return 0;
}
static void zfcp_reqlist_free(struct zfcp_adapter *adapter)
{
struct zfcp_fsf_req *request, *tmp;
unsigned int i;
for (i=0; i<REQUEST_LIST_SIZE; i++) {
if (list_empty(&adapter->req_list[i]))
continue;
list_for_each_entry_safe(request, tmp,
&adapter->req_list[i], list)
list_del(&request->list);
}
kfree(adapter->req_list);
}
void zfcp_reqlist_add(struct zfcp_adapter *adapter,
struct zfcp_fsf_req *fsf_req)
{
unsigned int i;
i = fsf_req->req_id % REQUEST_LIST_SIZE;
list_add_tail(&fsf_req->list, &adapter->req_list[i]);
}
void zfcp_reqlist_remove(struct zfcp_adapter *adapter, unsigned long req_id)
{
struct zfcp_fsf_req *request, *tmp;
unsigned int i, counter;
u64 dbg_tmp[2];
i = req_id % REQUEST_LIST_SIZE;
BUG_ON(list_empty(&adapter->req_list[i]));
counter = 0;
list_for_each_entry_safe(request, tmp, &adapter->req_list[i], list) {
if (request->req_id == req_id) {
dbg_tmp[0] = (u64) atomic_read(&adapter->reqs_active);
dbg_tmp[1] = (u64) counter;
debug_event(adapter->erp_dbf, 4, (void *) dbg_tmp, 16);
list_del(&request->list);
break;
}
counter++;
}
}
struct zfcp_fsf_req *zfcp_reqlist_ismember(struct zfcp_adapter *adapter,
unsigned long req_id)
{
struct zfcp_fsf_req *request, *tmp;
unsigned int i;
i = req_id % REQUEST_LIST_SIZE;
list_for_each_entry_safe(request, tmp, &adapter->req_list[i], list)
if (request->req_id == req_id)
return request;
return NULL;
}
int zfcp_reqlist_isempty(struct zfcp_adapter *adapter)
{
unsigned int i;
for (i=0; i<REQUEST_LIST_SIZE; i++)
if (!list_empty(&adapter->req_list[i]))
return 0;
return 1;
}
#undef ZFCP_LOG_AREA
/****************************************************************/
/************** Uncategorised Functions *************************/
/****************************************************************/
@ -961,8 +1060,12 @@ zfcp_adapter_enqueue(struct ccw_device *ccw_device)
INIT_LIST_HEAD(&adapter->port_remove_lh);
/* initialize list of fsf requests */
spin_lock_init(&adapter->fsf_req_list_lock);
INIT_LIST_HEAD(&adapter->fsf_req_list_head);
spin_lock_init(&adapter->req_list_lock);
retval = zfcp_reqlist_init(adapter);
if (retval) {
ZFCP_LOG_INFO("request list initialization failed\n");
goto failed_low_mem_buffers;
}
/* initialize debug locks */
@ -1041,8 +1144,6 @@ zfcp_adapter_enqueue(struct ccw_device *ccw_device)
* !0 - struct zfcp_adapter data structure could not be removed
* (e.g. still used)
* locks: adapter list write lock is assumed to be held by caller
* adapter->fsf_req_list_lock is taken and released within this
* function and must not be held on entry
*/
void
zfcp_adapter_dequeue(struct zfcp_adapter *adapter)
@ -1054,14 +1155,14 @@ zfcp_adapter_dequeue(struct zfcp_adapter *adapter)
zfcp_sysfs_adapter_remove_files(&adapter->ccw_device->dev);
dev_set_drvdata(&adapter->ccw_device->dev, NULL);
/* sanity check: no pending FSF requests */
spin_lock_irqsave(&adapter->fsf_req_list_lock, flags);
retval = !list_empty(&adapter->fsf_req_list_head);
spin_unlock_irqrestore(&adapter->fsf_req_list_lock, flags);
if (retval) {
spin_lock_irqsave(&adapter->req_list_lock, flags);
retval = zfcp_reqlist_isempty(adapter);
spin_unlock_irqrestore(&adapter->req_list_lock, flags);
if (!retval) {
ZFCP_LOG_NORMAL("bug: adapter %s (%p) still in use, "
"%i requests outstanding\n",
zfcp_get_busid_by_adapter(adapter), adapter,
atomic_read(&adapter->fsf_reqs_active));
atomic_read(&adapter->reqs_active));
retval = -EBUSY;
goto out;
}
@ -1087,6 +1188,7 @@ zfcp_adapter_dequeue(struct zfcp_adapter *adapter)
zfcp_free_low_mem_buffers(adapter);
/* free memory of adapter data structure and queues */
zfcp_qdio_free_queues(adapter);
zfcp_reqlist_free(adapter);
kfree(adapter->fc_stats);
kfree(adapter->stats_reset_data);
ZFCP_LOG_TRACE("freeing adapter structure\n");

5
drivers/s390/scsi/zfcp_ccw.c
View File

@ -164,6 +164,11 @@ zfcp_ccw_set_online(struct ccw_device *ccw_device)
retval = zfcp_adapter_scsi_register(adapter);
if (retval)
goto out_scsi_register;
/* initialize request counter */
BUG_ON(!zfcp_reqlist_isempty(adapter));
adapter->req_no = 0;
zfcp_erp_modify_adapter_status(adapter, ZFCP_STATUS_COMMON_RUNNING,
ZFCP_SET);
zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED);

13
drivers/s390/scsi/zfcp_def.h
View File

@ -52,7 +52,7 @@
/********************* GENERAL DEFINES *********************************/
/* zfcp version number, it consists of major, minor, and patch-level number */
#define ZFCP_VERSION "4.7.0"
#define ZFCP_VERSION "4.8.0"
/**
* zfcp_sg_to_address - determine kernel address from struct scatterlist
@ -80,7 +80,7 @@ zfcp_address_to_sg(void *address, struct scatterlist *list)
#define REQUEST_LIST_SIZE 128
/********************* SCSI SPECIFIC DEFINES *********************************/
#define ZFCP_SCSI_ER_TIMEOUT (100*HZ)
#define ZFCP_SCSI_ER_TIMEOUT (10*HZ)
/********************* CIO/QDIO SPECIFIC DEFINES *****************************/
@ -887,10 +887,10 @@ struct zfcp_adapter {
removed */
u32 ports; /* number of remote ports */
struct timer_list scsi_er_timer; /* SCSI err recovery watch */
struct list_head fsf_req_list_head; /* head of FSF req list */
spinlock_t fsf_req_list_lock; /* lock for ops on list of
FSF requests */
atomic_t fsf_reqs_active; /* # active FSF reqs */
atomic_t reqs_active; /* # active FSF reqs */
unsigned long req_no; /* unique FSF req number */
struct list_head *req_list; /* list of pending reqs */
spinlock_t req_list_lock; /* request list lock */
struct zfcp_qdio_queue request_queue; /* request queue */
u32 fsf_req_seq_no; /* FSF cmnd seq number */
wait_queue_head_t request_wq; /* can be used to wait for
@ -986,6 +986,7 @@ struct zfcp_unit {
/* FSF request */
struct zfcp_fsf_req {
struct list_head list; /* list of FSF requests */
unsigned long req_id; /* unique request ID */
struct zfcp_adapter *adapter; /* adapter request belongs to */
u8 sbal_number; /* nr of SBALs free for use */
u8 sbal_first; /* first SBAL for this request */

206
drivers/s390/scsi/zfcp_erp.c
View File

@ -64,8 +64,8 @@ static int zfcp_erp_strategy_check_action(struct zfcp_erp_action *, int);
static int zfcp_erp_adapter_strategy(struct zfcp_erp_action *);
static int zfcp_erp_adapter_strategy_generic(struct zfcp_erp_action *, int);
static int zfcp_erp_adapter_strategy_close(struct zfcp_erp_action *);
static int zfcp_erp_adapter_strategy_close_qdio(struct zfcp_erp_action *);
static int zfcp_erp_adapter_strategy_close_fsf(struct zfcp_erp_action *);
static void zfcp_erp_adapter_strategy_close_qdio(struct zfcp_erp_action *);
static void zfcp_erp_adapter_strategy_close_fsf(struct zfcp_erp_action *);
static int zfcp_erp_adapter_strategy_open(struct zfcp_erp_action *);
static int zfcp_erp_adapter_strategy_open_qdio(struct zfcp_erp_action *);
static int zfcp_erp_adapter_strategy_open_fsf(struct zfcp_erp_action *);
@ -93,10 +93,9 @@ static int zfcp_erp_unit_strategy_clearstati(struct zfcp_unit *);
static int zfcp_erp_unit_strategy_close(struct zfcp_erp_action *);
static int zfcp_erp_unit_strategy_open(struct zfcp_erp_action *);
static int zfcp_erp_action_dismiss_adapter(struct zfcp_adapter *);
static int zfcp_erp_action_dismiss_port(struct zfcp_port *);
static int zfcp_erp_action_dismiss_unit(struct zfcp_unit *);
static int zfcp_erp_action_dismiss(struct zfcp_erp_action *);
static void zfcp_erp_action_dismiss_port(struct zfcp_port *);
static void zfcp_erp_action_dismiss_unit(struct zfcp_unit *);
static void zfcp_erp_action_dismiss(struct zfcp_erp_action *);
static int zfcp_erp_action_enqueue(int, struct zfcp_adapter *,
struct zfcp_port *, struct zfcp_unit *);
@ -135,29 +134,39 @@ zfcp_fsf_request_timeout_handler(unsigned long data)
zfcp_erp_adapter_reopen(adapter, 0);
}
/*
* function: zfcp_fsf_scsi_er_timeout_handler
/**
* zfcp_fsf_scsi_er_timeout_handler - timeout handler for scsi eh tasks
*
* purpose: This function needs to be called whenever a SCSI error recovery
* action (abort/reset) does not return.
* Re-opening the adapter means that the command can be returned
* by zfcp (it is guarranteed that it does not return via the
* adapter anymore). The buffer can then be used again.
*
* returns: sod all
* This function needs to be called whenever a SCSI error recovery
* action (abort/reset) does not return. Re-opening the adapter means
* that the abort/reset command can be returned by zfcp. It won't complete
* via the adapter anymore (because qdio queues are closed). If ERP is
* already running on this adapter it will be stopped.
*/
void
zfcp_fsf_scsi_er_timeout_handler(unsigned long data)
void zfcp_fsf_scsi_er_timeout_handler(unsigned long data)
{
struct zfcp_adapter *adapter = (struct zfcp_adapter *) data;
unsigned long flags;
ZFCP_LOG_NORMAL("warning: SCSI error recovery timed out. "
"Restarting all operations on the adapter %s\n",
zfcp_get_busid_by_adapter(adapter));
debug_text_event(adapter->erp_dbf, 1, "eh_lmem_tout");
zfcp_erp_adapter_reopen(adapter, 0);
return;
write_lock_irqsave(&adapter->erp_lock, flags);
if (atomic_test_mask(ZFCP_STATUS_ADAPTER_ERP_PENDING,
&adapter->status)) {
zfcp_erp_modify_adapter_status(adapter,
ZFCP_STATUS_COMMON_UNBLOCKED|ZFCP_STATUS_COMMON_OPEN,
ZFCP_CLEAR);
zfcp_erp_action_dismiss_adapter(adapter);
write_unlock_irqrestore(&adapter->erp_lock, flags);
/* dismiss all pending requests including requests for ERP */
zfcp_fsf_req_dismiss_all(adapter);
adapter->fsf_req_seq_no = 0;
} else
write_unlock_irqrestore(&adapter->erp_lock, flags);
zfcp_erp_adapter_reopen(adapter, 0);
}
/*
@ -670,17 +679,10 @@ zfcp_erp_unit_reopen(struct zfcp_unit *unit, int clear_mask)
return retval;
}
/*
* function:
*
* purpose: disable I/O,
* return any open requests and clean them up,
* aim: no pending and incoming I/O
*
* returns:
/**
* zfcp_erp_adapter_block - mark adapter as blocked, block scsi requests
*/
static void
zfcp_erp_adapter_block(struct zfcp_adapter *adapter, int clear_mask)
static void zfcp_erp_adapter_block(struct zfcp_adapter *adapter, int clear_mask)
{
debug_text_event(adapter->erp_dbf, 6, "a_bl");
zfcp_erp_modify_adapter_status(adapter,
@ -688,15 +690,10 @@ zfcp_erp_adapter_block(struct zfcp_adapter *adapter, int clear_mask)
clear_mask, ZFCP_CLEAR);
}
/*
* function:
*
* purpose: enable I/O
*
* returns:
/**
* zfcp_erp_adapter_unblock - mark adapter as unblocked, allow scsi requests
*/
static void
zfcp_erp_adapter_unblock(struct zfcp_adapter *adapter)
static void zfcp_erp_adapter_unblock(struct zfcp_adapter *adapter)
{
debug_text_event(adapter->erp_dbf, 6, "a_ubl");
atomic_set_mask(ZFCP_STATUS_COMMON_UNBLOCKED, &adapter->status);
@ -848,18 +845,16 @@ zfcp_erp_strategy_check_fsfreq(struct zfcp_erp_action *erp_action)
struct zfcp_adapter *adapter = erp_action->adapter;
if (erp_action->fsf_req) {
/* take lock to ensure that request is not being deleted meanwhile */
spin_lock(&adapter->fsf_req_list_lock);
/* check whether fsf req does still exist */
list_for_each_entry(fsf_req, &adapter->fsf_req_list_head, list)
if (fsf_req == erp_action->fsf_req)
break;
if (fsf_req && (fsf_req->erp_action == erp_action)) {
/* take lock to ensure that request is not deleted meanwhile */
spin_lock(&adapter->req_list_lock);
if ((!zfcp_reqlist_ismember(adapter,
erp_action->fsf_req->req_id)) &&
(fsf_req->erp_action == erp_action)) {
/* fsf_req still exists */
debug_text_event(adapter->erp_dbf, 3, "a_ca_req");
debug_event(adapter->erp_dbf, 3, &fsf_req,
sizeof (unsigned long));
/* dismiss fsf_req of timed out or dismissed erp_action */
/* dismiss fsf_req of timed out/dismissed erp_action */
if (erp_action->status & (ZFCP_STATUS_ERP_DISMISSED |
ZFCP_STATUS_ERP_TIMEDOUT)) {
debug_text_event(adapter->erp_dbf, 3,
@ -892,30 +887,22 @@ zfcp_erp_strategy_check_fsfreq(struct zfcp_erp_action *erp_action)
*/
erp_action->fsf_req = NULL;
}
spin_unlock(&adapter->fsf_req_list_lock);
spin_unlock(&adapter->req_list_lock);
} else
debug_text_event(adapter->erp_dbf, 3, "a_ca_noreq");
return retval;
}
/*
* purpose: generic handler for asynchronous events related to erp_action events
* (normal completion, time-out, dismissing, retry after
* low memory condition)
/**
* zfcp_erp_async_handler_nolock - complete erp_action
*
* note: deletion of timer is not required (e.g. in case of a time-out),
* but a second try does no harm,
* we leave it in here to allow for greater simplification
*
* returns: 0 - there was an action to handle
* !0 - otherwise
* Used for normal completion, time-out, dismissal and failure after
* low memory condition.
*/
static int
zfcp_erp_async_handler_nolock(struct zfcp_erp_action *erp_action,
static void zfcp_erp_async_handler_nolock(struct zfcp_erp_action *erp_action,
unsigned long set_mask)
{
int retval;
struct zfcp_adapter *adapter = erp_action->adapter;
if (zfcp_erp_action_exists(erp_action) == ZFCP_ERP_ACTION_RUNNING) {
@ -926,43 +913,26 @@ zfcp_erp_async_handler_nolock(struct zfcp_erp_action *erp_action,
del_timer(&erp_action->timer);
erp_action->status |= set_mask;
zfcp_erp_action_ready(erp_action);
retval = 0;
} else {
/* action is ready or gone - nothing to do */
debug_text_event(adapter->erp_dbf, 3, "a_asyh_gone");
debug_event(adapter->erp_dbf, 3, &erp_action->action,
sizeof (int));
retval = 1;
}
return retval;
}
/*
* purpose: generic handler for asynchronous events related to erp_action
* events (normal completion, time-out, dismissing, retry after
* low memory condition)
*
* note: deletion of timer is not required (e.g. in case of a time-out),
* but a second try does no harm,
* we leave it in here to allow for greater simplification
*
* returns: 0 - there was an action to handle
* !0 - otherwise
/**
* zfcp_erp_async_handler - wrapper for erp_async_handler_nolock w/ locking
*/
int
zfcp_erp_async_handler(struct zfcp_erp_action *erp_action,
void zfcp_erp_async_handler(struct zfcp_erp_action *erp_action,
unsigned long set_mask)
{
struct zfcp_adapter *adapter = erp_action->adapter;
unsigned long flags;
int retval;
write_lock_irqsave(&adapter->erp_lock, flags);
retval = zfcp_erp_async_handler_nolock(erp_action, set_mask);
zfcp_erp_async_handler_nolock(erp_action, set_mask);
write_unlock_irqrestore(&adapter->erp_lock, flags);
return retval;
}
/*
@ -999,17 +969,15 @@ zfcp_erp_timeout_handler(unsigned long data)
zfcp_erp_async_handler(erp_action, ZFCP_STATUS_ERP_TIMEDOUT);
}
/*
* purpose: is called for an erp_action which needs to be ended
* though not being done,
* this is usually required if an higher is generated,
* action gets an appropriate flag and will be processed
* accordingly
/**
* zfcp_erp_action_dismiss - dismiss an erp_action
*
* locks: erp_lock held (thus we need to call another handler variant)
* adapter->erp_lock must be held
*
* Dismissal of an erp_action is usually required if an erp_action of
* higher priority is generated.
*/
static int
zfcp_erp_action_dismiss(struct zfcp_erp_action *erp_action)
static void zfcp_erp_action_dismiss(struct zfcp_erp_action *erp_action)
{
struct zfcp_adapter *adapter = erp_action->adapter;
@ -1017,8 +985,6 @@ zfcp_erp_action_dismiss(struct zfcp_erp_action *erp_action)
debug_event(adapter->erp_dbf, 2, &erp_action->action, sizeof (int));
zfcp_erp_async_handler_nolock(erp_action, ZFCP_STATUS_ERP_DISMISSED);
return 0;
}
int
@ -2074,18 +2040,12 @@ zfcp_erp_adapter_strategy_open_qdio(struct zfcp_erp_action *erp_action)
return retval;
}
/*
* function: zfcp_qdio_cleanup
*
* purpose: cleans up QDIO operation for the specified adapter
*
* returns: 0 - successful cleanup
* !0 - failed cleanup
/**
* zfcp_erp_adapter_strategy_close_qdio - close qdio queues for an adapter
*/
int
static void
zfcp_erp_adapter_strategy_close_qdio(struct zfcp_erp_action *erp_action)
{
int retval = ZFCP_ERP_SUCCEEDED;
int first_used;
int used_count;
struct zfcp_adapter *adapter = erp_action->adapter;
@ -2094,15 +2054,13 @@ zfcp_erp_adapter_strategy_close_qdio(struct zfcp_erp_action *erp_action)
ZFCP_LOG_DEBUG("error: attempt to shut down inactive QDIO "
"queues on adapter %s\n",
zfcp_get_busid_by_adapter(adapter));
retval = ZFCP_ERP_FAILED;
goto out;
return;
}
/*
* Get queue_lock and clear QDIOUP flag. Thus it's guaranteed that
* do_QDIO won't be called while qdio_shutdown is in progress.
*/
write_lock_irq(&adapter->request_queue.queue_lock);
atomic_clear_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status);
write_unlock_irq(&adapter->request_queue.queue_lock);
@ -2134,8 +2092,6 @@ zfcp_erp_adapter_strategy_close_qdio(struct zfcp_erp_action *erp_action)
adapter->request_queue.free_index = 0;
atomic_set(&adapter->request_queue.free_count, 0);
adapter->request_queue.distance_from_int = 0;
out:
return retval;
}
static int
@ -2258,11 +2214,11 @@ zfcp_erp_adapter_strategy_open_fsf_xport(struct zfcp_erp_action *erp_action)
"%s)\n", zfcp_get_busid_by_adapter(adapter));
ret = ZFCP_ERP_FAILED;
}
if (!atomic_test_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status)) {
ZFCP_LOG_INFO("error: exchange port data failed (adapter "
/* don't treat as error for the sake of compatibility */
if (!atomic_test_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status))
ZFCP_LOG_INFO("warning: exchange port data failed (adapter "
"%s\n", zfcp_get_busid_by_adapter(adapter));
ret = ZFCP_ERP_FAILED;
}
return ret;
}
@ -2292,18 +2248,12 @@ zfcp_erp_adapter_strategy_open_fsf_statusread(struct zfcp_erp_action
return retval;
}
/*
* function: zfcp_fsf_cleanup
*
* purpose: cleanup FSF operation for specified adapter
*
* returns: 0 - FSF operation successfully cleaned up
* !0 - failed to cleanup FSF operation for this adapter
/**
* zfcp_erp_adapter_strategy_close_fsf - stop FSF operations for an adapter
*/
static int
static void
zfcp_erp_adapter_strategy_close_fsf(struct zfcp_erp_action *erp_action)
{
int retval = ZFCP_ERP_SUCCEEDED;
struct zfcp_adapter *adapter = erp_action->adapter;
/*
@ -2317,8 +2267,6 @@ zfcp_erp_adapter_strategy_close_fsf(struct zfcp_erp_action *erp_action)
/* all ports and units are closed */
zfcp_erp_modify_adapter_status(adapter,
ZFCP_STATUS_COMMON_OPEN, ZFCP_CLEAR);
return retval;
}
/*
@ -3293,10 +3241,8 @@ zfcp_erp_action_cleanup(int action, struct zfcp_adapter *adapter,
}
static int
zfcp_erp_action_dismiss_adapter(struct zfcp_adapter *adapter)
void zfcp_erp_action_dismiss_adapter(struct zfcp_adapter *adapter)
{
int retval = 0;
struct zfcp_port *port;
debug_text_event(adapter->erp_dbf, 5, "a_actab");
@ -3305,14 +3251,10 @@ zfcp_erp_action_dismiss_adapter(struct zfcp_adapter *adapter)
else
list_for_each_entry(port, &adapter->port_list_head, list)
zfcp_erp_action_dismiss_port(port);
return retval;
}
static int
zfcp_erp_action_dismiss_port(struct zfcp_port *port)
static void zfcp_erp_action_dismiss_port(struct zfcp_port *port)
{
int retval = 0;
struct zfcp_unit *unit;
struct zfcp_adapter *adapter = port->adapter;
@ -3323,22 +3265,16 @@ zfcp_erp_action_dismiss_port(struct zfcp_port *port)
else
list_for_each_entry(unit, &port->unit_list_head, list)
zfcp_erp_action_dismiss_unit(unit);
return retval;
}
static int
zfcp_erp_action_dismiss_unit(struct zfcp_unit *unit)
static void zfcp_erp_action_dismiss_unit(struct zfcp_unit *unit)
{
int retval = 0;
struct zfcp_adapter *adapter = unit->port->adapter;
debug_text_event(adapter->erp_dbf, 5, "u_actab");
debug_event(adapter->erp_dbf, 5, &unit->fcp_lun, sizeof (fcp_lun_t));
if (atomic_test_mask(ZFCP_STATUS_COMMON_ERP_INUSE, &unit->status))
zfcp_erp_action_dismiss(&unit->erp_action);
return retval;
}
static inline void

9
drivers/s390/scsi/zfcp_ext.h
View File

@ -63,7 +63,6 @@ extern int zfcp_qdio_allocate_queues(struct zfcp_adapter *);
extern void zfcp_qdio_free_queues(struct zfcp_adapter *);
extern int zfcp_qdio_determine_pci(struct zfcp_qdio_queue *,
struct zfcp_fsf_req *);
extern int zfcp_qdio_reqid_check(struct zfcp_adapter *, void *);
extern volatile struct qdio_buffer_element *zfcp_qdio_sbale_req
(struct zfcp_fsf_req *, int, int);
@ -140,6 +139,7 @@ extern void zfcp_erp_modify_adapter_status(struct zfcp_adapter *, u32, int);
extern int zfcp_erp_adapter_reopen(struct zfcp_adapter *, int);
extern int zfcp_erp_adapter_shutdown(struct zfcp_adapter *, int);
extern void zfcp_erp_adapter_failed(struct zfcp_adapter *);
extern void zfcp_erp_action_dismiss_adapter(struct zfcp_adapter *);
extern void zfcp_erp_modify_port_status(struct zfcp_port *, u32, int);
extern int zfcp_erp_port_reopen(struct zfcp_port *, int);
@ -156,7 +156,7 @@ extern void zfcp_erp_unit_failed(struct zfcp_unit *);
extern int zfcp_erp_thread_setup(struct zfcp_adapter *);
extern int zfcp_erp_thread_kill(struct zfcp_adapter *);
extern int zfcp_erp_wait(struct zfcp_adapter *);
extern int zfcp_erp_async_handler(struct zfcp_erp_action *, unsigned long);
extern void zfcp_erp_async_handler(struct zfcp_erp_action *, unsigned long);
extern int zfcp_test_link(struct zfcp_port *);
@ -190,5 +190,10 @@ extern void zfcp_scsi_dbf_event_abort(const char *, struct zfcp_adapter *,
struct zfcp_fsf_req *);
extern void zfcp_scsi_dbf_event_devreset(const char *, u8, struct zfcp_unit *,
struct scsi_cmnd *);
extern void zfcp_reqlist_add(struct zfcp_adapter *, struct zfcp_fsf_req *);
extern void zfcp_reqlist_remove(struct zfcp_adapter *, unsigned long);
extern struct zfcp_fsf_req *zfcp_reqlist_ismember(struct zfcp_adapter *,
unsigned long);
extern int zfcp_reqlist_isempty(struct zfcp_adapter *);
#endif /* ZFCP_EXT_H */

124
drivers/s390/scsi/zfcp_fsf.c
View File

@ -49,7 +49,6 @@ static int zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *);
static void zfcp_fsf_link_down_info_eval(struct zfcp_adapter *,
struct fsf_link_down_info *);
static int zfcp_fsf_req_dispatch(struct zfcp_fsf_req *);
static void zfcp_fsf_req_dismiss(struct zfcp_fsf_req *);
/* association between FSF command and FSF QTCB type */
static u32 fsf_qtcb_type[] = {
@ -146,49 +145,50 @@ zfcp_fsf_req_free(struct zfcp_fsf_req *fsf_req)
kfree(fsf_req);
}
/*
* function:
*
* purpose:
*
* returns:
*
* note: qdio queues shall be down (no ongoing inbound processing)
/**
* zfcp_fsf_req_dismiss - dismiss a single fsf request
*/
int
zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter)
static void zfcp_fsf_req_dismiss(struct zfcp_adapter *adapter,
struct zfcp_fsf_req *fsf_req,
unsigned int counter)
{
struct zfcp_fsf_req *fsf_req, *tmp;
unsigned long flags;
LIST_HEAD(remove_queue);
u64 dbg_tmp[2];
spin_lock_irqsave(&adapter->fsf_req_list_lock, flags);
list_splice_init(&adapter->fsf_req_list_head, &remove_queue);
atomic_set(&adapter->fsf_reqs_active, 0);
spin_unlock_irqrestore(&adapter->fsf_req_list_lock, flags);
list_for_each_entry_safe(fsf_req, tmp, &remove_queue, list) {
dbg_tmp[0] = (u64) atomic_read(&adapter->reqs_active);
dbg_tmp[1] = (u64) counter;
debug_event(adapter->erp_dbf, 4, (void *) dbg_tmp, 16);
list_del(&fsf_req->list);
zfcp_fsf_req_dismiss(fsf_req);
}
return 0;
}
/*
* function:
*
* purpose:
*
* returns:
*/
static void
zfcp_fsf_req_dismiss(struct zfcp_fsf_req *fsf_req)
{
fsf_req->status |= ZFCP_STATUS_FSFREQ_DISMISSED;
zfcp_fsf_req_complete(fsf_req);
}
/**
* zfcp_fsf_req_dismiss_all - dismiss all remaining fsf requests
*/
int zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter)
{
struct zfcp_fsf_req *request, *tmp;
unsigned long flags;
unsigned int i, counter;
spin_lock_irqsave(&adapter->req_list_lock, flags);
atomic_set(&adapter->reqs_active, 0);
for (i=0; i<REQUEST_LIST_SIZE; i++) {
if (list_empty(&adapter->req_list[i]))
continue;
counter = 0;
list_for_each_entry_safe(request, tmp,
&adapter->req_list[i], list) {
zfcp_fsf_req_dismiss(adapter, request, counter);
counter++;
}
}
spin_unlock_irqrestore(&adapter->req_list_lock, flags);
return 0;
}
/*
* function: zfcp_fsf_req_complete
*
@ -4592,12 +4592,14 @@ static inline void
zfcp_fsf_req_qtcb_init(struct zfcp_fsf_req *fsf_req)
{
if (likely(fsf_req->qtcb != NULL)) {
fsf_req->qtcb->prefix.req_seq_no = fsf_req->adapter->fsf_req_seq_no;
fsf_req->qtcb->prefix.req_id = (unsigned long)fsf_req;
fsf_req->qtcb->prefix.req_seq_no =
fsf_req->adapter->fsf_req_seq_no;
fsf_req->qtcb->prefix.req_id = fsf_req->req_id;
fsf_req->qtcb->prefix.ulp_info = ZFCP_ULP_INFO_VERSION;
fsf_req->qtcb->prefix.qtcb_type = fsf_qtcb_type[fsf_req->fsf_command];
fsf_req->qtcb->prefix.qtcb_type =
fsf_qtcb_type[fsf_req->fsf_command];
fsf_req->qtcb->prefix.qtcb_version = ZFCP_QTCB_VERSION;
fsf_req->qtcb->header.req_handle = (unsigned long)fsf_req;
fsf_req->qtcb->header.req_handle = fsf_req->req_id;
fsf_req->qtcb->header.fsf_command = fsf_req->fsf_command;
}
}
@ -4654,6 +4656,7 @@ zfcp_fsf_req_create(struct zfcp_adapter *adapter, u32 fsf_cmd, int req_flags,
{
volatile struct qdio_buffer_element *sbale;
struct zfcp_fsf_req *fsf_req = NULL;
unsigned long flags;
int ret = 0;
struct zfcp_qdio_queue *req_queue = &adapter->request_queue;
@ -4668,6 +4671,12 @@ zfcp_fsf_req_create(struct zfcp_adapter *adapter, u32 fsf_cmd, int req_flags,
fsf_req->adapter = adapter;
fsf_req->fsf_command = fsf_cmd;
INIT_LIST_HEAD(&fsf_req->list);
/* unique request id */
spin_lock_irqsave(&adapter->req_list_lock, flags);
fsf_req->req_id = adapter->req_no++;
spin_unlock_irqrestore(&adapter->req_list_lock, flags);
zfcp_fsf_req_qtcb_init(fsf_req);
@ -4707,7 +4716,7 @@ zfcp_fsf_req_create(struct zfcp_adapter *adapter, u32 fsf_cmd, int req_flags,
sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
/* setup common SBALE fields */
sbale[0].addr = fsf_req;
sbale[0].addr = (void *) fsf_req->req_id;
sbale[0].flags |= SBAL_FLAGS0_COMMAND;
if (likely(fsf_req->qtcb != NULL)) {
sbale[1].addr = (void *) fsf_req->qtcb;
@ -4747,7 +4756,7 @@ zfcp_fsf_req_send(struct zfcp_fsf_req *fsf_req, struct timer_list *timer)
volatile struct qdio_buffer_element *sbale;
int inc_seq_no;
int new_distance_from_int;
unsigned long flags;
u64 dbg_tmp[2];
int retval = 0;
adapter = fsf_req->adapter;
@ -4761,10 +4770,10 @@ zfcp_fsf_req_send(struct zfcp_fsf_req *fsf_req, struct timer_list *timer)
ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_TRACE, (char *) sbale[1].addr,
sbale[1].length);
/* put allocated FSF request at list tail */
spin_lock_irqsave(&adapter->fsf_req_list_lock, flags);
list_add_tail(&fsf_req->list, &adapter->fsf_req_list_head);
spin_unlock_irqrestore(&adapter->fsf_req_list_lock, flags);
/* put allocated FSF request into hash table */
spin_lock(&adapter->req_list_lock);
zfcp_reqlist_add(adapter, fsf_req);
spin_unlock(&adapter->req_list_lock);
inc_seq_no = (fsf_req->qtcb != NULL);
@ -4803,6 +4812,10 @@ zfcp_fsf_req_send(struct zfcp_fsf_req *fsf_req, struct timer_list *timer)
QDIO_FLAG_SYNC_OUTPUT,
0, fsf_req->sbal_first, fsf_req->sbal_number, NULL);
dbg_tmp[0] = (unsigned long) sbale[0].addr;
dbg_tmp[1] = (u64) retval;
debug_event(adapter->erp_dbf, 4, (void *) dbg_tmp, 16);
if (unlikely(retval)) {
/* Queues are down..... */
retval = -EIO;
@ -4812,22 +4825,17 @@ zfcp_fsf_req_send(struct zfcp_fsf_req *fsf_req, struct timer_list *timer)
*/
if (timer)
del_timer(timer);
spin_lock_irqsave(&adapter->fsf_req_list_lock, flags);
list_del(&fsf_req->list);
spin_unlock_irqrestore(&adapter->fsf_req_list_lock, flags);
/*
* adjust the number of free SBALs in request queue as well as
* position of first one
*/
spin_lock(&adapter->req_list_lock);
zfcp_reqlist_remove(adapter, fsf_req->req_id);
spin_unlock(&adapter->req_list_lock);
/* undo changes in request queue made for this request */
zfcp_qdio_zero_sbals(req_queue->buffer,
fsf_req->sbal_first, fsf_req->sbal_number);
atomic_add(fsf_req->sbal_number, &req_queue->free_count);
req_queue->free_index -= fsf_req->sbal_number; /* increase */
req_queue->free_index -= fsf_req->sbal_number;
req_queue->free_index += QDIO_MAX_BUFFERS_PER_Q;
req_queue->free_index %= QDIO_MAX_BUFFERS_PER_Q; /* wrap */
ZFCP_LOG_DEBUG
("error: do_QDIO failed. Buffers could not be enqueued "
"to request queue.\n");
zfcp_erp_adapter_reopen(adapter, 0);
} else {
req_queue->distance_from_int = new_distance_from_int;
/*
@ -4843,7 +4851,7 @@ zfcp_fsf_req_send(struct zfcp_fsf_req *fsf_req, struct timer_list *timer)
adapter->fsf_req_seq_no++;
/* count FSF requests pending */
atomic_inc(&adapter->fsf_reqs_active);
atomic_inc(&adapter->reqs_active);
}
return retval;
}

79
drivers/s390/scsi/zfcp_qdio.c
View File

@ -282,6 +282,37 @@ zfcp_qdio_request_handler(struct ccw_device *ccw_device,
return;
}
/**
* zfcp_qdio_reqid_check - checks for valid reqids or unsolicited status
*/
static int zfcp_qdio_reqid_check(struct zfcp_adapter *adapter,
unsigned long req_id)
{
struct zfcp_fsf_req *fsf_req;
unsigned long flags;
debug_long_event(adapter->erp_dbf, 4, req_id);
spin_lock_irqsave(&adapter->req_list_lock, flags);
fsf_req = zfcp_reqlist_ismember(adapter, req_id);
if (!fsf_req) {
spin_unlock_irqrestore(&adapter->req_list_lock, flags);
ZFCP_LOG_NORMAL("error: unknown request id (%ld).\n", req_id);
zfcp_erp_adapter_reopen(adapter, 0);
return -EINVAL;
}
zfcp_reqlist_remove(adapter, req_id);
atomic_dec(&adapter->reqs_active);
spin_unlock_irqrestore(&adapter->req_list_lock, flags);
/* finish the FSF request */
zfcp_fsf_req_complete(fsf_req);
return 0;
}
/*
* function: zfcp_qdio_response_handler
*
@ -344,7 +375,7 @@ zfcp_qdio_response_handler(struct ccw_device *ccw_device,
/* look for QDIO request identifiers in SB */
buffere = &buffer->element[buffere_index];
retval = zfcp_qdio_reqid_check(adapter,
(void *) buffere->addr);
(unsigned long) buffere->addr);
if (retval) {
ZFCP_LOG_NORMAL("bug: unexpected inbound "
@ -415,52 +446,6 @@ zfcp_qdio_response_handler(struct ccw_device *ccw_device,
return;
}
/*
* function: zfcp_qdio_reqid_check
*
* purpose: checks for valid reqids or unsolicited status
*
* returns: 0 - valid request id or unsolicited status
* !0 - otherwise
*/
int
zfcp_qdio_reqid_check(struct zfcp_adapter *adapter, void *sbale_addr)
{
struct zfcp_fsf_req *fsf_req;
unsigned long flags;
/* invalid (per convention used in this driver) */
if (unlikely(!sbale_addr)) {
ZFCP_LOG_NORMAL("bug: invalid reqid\n");
return -EINVAL;
}
/* valid request id and thus (hopefully :) valid fsf_req address */
fsf_req = (struct zfcp_fsf_req *) sbale_addr;
/* serialize with zfcp_fsf_req_dismiss_all */
spin_lock_irqsave(&adapter->fsf_req_list_lock, flags);
if (list_empty(&adapter->fsf_req_list_head)) {
spin_unlock_irqrestore(&adapter->fsf_req_list_lock, flags);
return 0;
}
list_del(&fsf_req->list);
atomic_dec(&adapter->fsf_reqs_active);
spin_unlock_irqrestore(&adapter->fsf_req_list_lock, flags);
if (unlikely(adapter != fsf_req->adapter)) {
ZFCP_LOG_NORMAL("bug: invalid reqid (fsf_req=%p, "
"fsf_req->adapter=%p, adapter=%p)\n",
fsf_req, fsf_req->adapter, adapter);
return -EINVAL;
}
/* finish the FSF request */
zfcp_fsf_req_complete(fsf_req);
return 0;
}
/**
* zfcp_qdio_sbale_get - return pointer to SBALE of qdio_queue
* @queue: queue from which SBALE should be returned

71
drivers/s390/scsi/zfcp_scsi.c
View File

@ -30,7 +30,6 @@ static int zfcp_scsi_queuecommand(struct scsi_cmnd *,
void (*done) (struct scsi_cmnd *));
static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *);
static int zfcp_scsi_eh_device_reset_handler(struct scsi_cmnd *);
static int zfcp_scsi_eh_bus_reset_handler(struct scsi_cmnd *);
static int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *);
static int zfcp_task_management_function(struct zfcp_unit *, u8,
struct scsi_cmnd *);
@ -46,30 +45,22 @@ struct zfcp_data zfcp_data = {
.scsi_host_template = {
.name = ZFCP_NAME,
.proc_name = "zfcp",
.proc_info = NULL,
.detect = NULL,
.slave_alloc = zfcp_scsi_slave_alloc,
.slave_configure = zfcp_scsi_slave_configure,
.slave_destroy = zfcp_scsi_slave_destroy,
.queuecommand = zfcp_scsi_queuecommand,
.eh_abort_handler = zfcp_scsi_eh_abort_handler,
.eh_device_reset_handler = zfcp_scsi_eh_device_reset_handler,
.eh_bus_reset_handler = zfcp_scsi_eh_bus_reset_handler,
.eh_bus_reset_handler = zfcp_scsi_eh_host_reset_handler,
.eh_host_reset_handler = zfcp_scsi_eh_host_reset_handler,
.can_queue = 4096,
.this_id = -1,
/*
* FIXME:
* one less? can zfcp_create_sbale cope with it?
*/
.sg_tablesize = ZFCP_MAX_SBALES_PER_REQ,
.cmd_per_lun = 1,
.unchecked_isa_dma = 0,
.use_clustering = 1,
.sdev_attrs = zfcp_sysfs_sdev_attrs,
},
.driver_version = ZFCP_VERSION,
/* rest initialised with zeros */
};
/* Find start of Response Information in FCP response unit*/
@ -176,8 +167,14 @@ zfcp_scsi_slave_alloc(struct scsi_device *sdp)
return retval;
}
static void
zfcp_scsi_slave_destroy(struct scsi_device *sdpnt)
/**
* zfcp_scsi_slave_destroy - called when scsi device is removed
*
* Remove reference to associated scsi device for an zfcp_unit.
* Mark zfcp_unit as failed. The scsi device might be deleted via sysfs
* or a scan for this device might have failed.
*/
static void zfcp_scsi_slave_destroy(struct scsi_device *sdpnt)
{
struct zfcp_unit *unit = (struct zfcp_unit *) sdpnt->hostdata;
@ -185,6 +182,7 @@ zfcp_scsi_slave_destroy(struct scsi_device *sdpnt)
atomic_clear_mask(ZFCP_STATUS_UNIT_REGISTERED, &unit->status);
sdpnt->hostdata = NULL;
unit->device = NULL;
zfcp_erp_unit_failed(unit);
zfcp_unit_put(unit);
} else {
ZFCP_LOG_NORMAL("bug: no unit associated with SCSI device at "
@ -549,35 +547,38 @@ zfcp_task_management_function(struct zfcp_unit *unit, u8 tm_flags,
}
/**
* zfcp_scsi_eh_bus_reset_handler - reset bus (reopen adapter)
* zfcp_scsi_eh_host_reset_handler - handler for host and bus reset
*
* If ERP is already running it will be stopped.
*/
int
zfcp_scsi_eh_bus_reset_handler(struct scsi_cmnd *scpnt)
int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt)
{
struct zfcp_unit *unit = (struct zfcp_unit*) scpnt->device->hostdata;
struct zfcp_adapter *adapter = unit->port->adapter;
struct zfcp_unit *unit;
struct zfcp_adapter *adapter;
unsigned long flags;
ZFCP_LOG_NORMAL("bus reset because of problems with "
"unit 0x%016Lx\n", unit->fcp_lun);
zfcp_erp_adapter_reopen(adapter, 0);
zfcp_erp_wait(adapter);
return SUCCESS;
}
/**
* zfcp_scsi_eh_host_reset_handler - reset host (reopen adapter)
*/
int
zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt)
{
struct zfcp_unit *unit = (struct zfcp_unit*) scpnt->device->hostdata;
struct zfcp_adapter *adapter = unit->port->adapter;
ZFCP_LOG_NORMAL("host reset because of problems with "
unit = (struct zfcp_unit*) scpnt->device->hostdata;
adapter = unit->port->adapter;
ZFCP_LOG_NORMAL("host/bus reset because of problems with "
"unit 0x%016Lx\n", unit->fcp_lun);
write_lock_irqsave(&adapter->erp_lock, flags);
if (atomic_test_mask(ZFCP_STATUS_ADAPTER_ERP_PENDING,
&adapter->status)) {
zfcp_erp_modify_adapter_status(adapter,
ZFCP_STATUS_COMMON_UNBLOCKED|ZFCP_STATUS_COMMON_OPEN,
ZFCP_CLEAR);
zfcp_erp_action_dismiss_adapter(adapter);
write_unlock_irqrestore(&adapter->erp_lock, flags);
zfcp_fsf_req_dismiss_all(adapter);
adapter->fsf_req_seq_no = 0;
zfcp_erp_adapter_reopen(adapter, 0);
} else {
write_unlock_irqrestore(&adapter->erp_lock, flags);
zfcp_erp_adapter_reopen(adapter, 0);
zfcp_erp_wait(adapter);
}
return SUCCESS;
}

568
drivers/scsi/hptiop.c
View File

@ -45,10 +45,6 @@ static char driver_name[] = "hptiop";
static const char driver_name_long[] = "RocketRAID 3xxx SATA Controller driver";
static const char driver_ver[] = "v1.0 (060426)";
static DEFINE_SPINLOCK(hptiop_hba_list_lock);
static LIST_HEAD(hptiop_hba_list);
static int hptiop_cdev_major = -1;
static void hptiop_host_request_callback(struct hptiop_hba *hba, u32 tag);
static void hptiop_iop_request_callback(struct hptiop_hba *hba, u32 tag);
static void hptiop_message_callback(struct hptiop_hba *hba, u32 msg);
@ -577,7 +573,7 @@ static int hptiop_reset_hba(struct hptiop_hba *hba)
if (atomic_xchg(&hba->resetting, 1) == 0) {
atomic_inc(&hba->reset_count);
writel(IOPMU_INBOUND_MSG0_RESET,
&hba->iop->outbound_msgaddr0);
&hba->iop->inbound_msgaddr0);
hptiop_pci_posting_flush(hba->iop);
}
@ -620,532 +616,11 @@ static int hptiop_adjust_disk_queue_depth(struct scsi_device *sdev,
return queue_depth;
}
struct hptiop_getinfo {
char __user *buffer;
loff_t buflength;
loff_t bufoffset;
loff_t buffillen;
loff_t filpos;
};
static void hptiop_copy_mem_info(struct hptiop_getinfo *pinfo,
char *data, int datalen)
{
if (pinfo->filpos < pinfo->bufoffset) {
if (pinfo->filpos + datalen <= pinfo->bufoffset) {
pinfo->filpos += datalen;
return;
} else {
data += (pinfo->bufoffset - pinfo->filpos);
datalen -= (pinfo->bufoffset - pinfo->filpos);
pinfo->filpos = pinfo->bufoffset;
}
}
pinfo->filpos += datalen;
if (pinfo->buffillen == pinfo->buflength)
return;
if (pinfo->buflength - pinfo->buffillen < datalen)
datalen = pinfo->buflength - pinfo->buffillen;
if (copy_to_user(pinfo->buffer + pinfo->buffillen, data, datalen))
return;
pinfo->buffillen += datalen;
}
static int hptiop_copy_info(struct hptiop_getinfo *pinfo, char *fmt, ...)
{
va_list args;
char buf[128];
int len;
va_start(args, fmt);
len = vsnprintf(buf, sizeof(buf), fmt, args);
va_end(args);
hptiop_copy_mem_info(pinfo, buf, len);
return len;
}
static void hptiop_ioctl_done(struct hpt_ioctl_k *arg)
{
arg->done = NULL;
wake_up(&arg->hba->ioctl_wq);
}
static void hptiop_do_ioctl(struct hpt_ioctl_k *arg)
{
struct hptiop_hba *hba = arg->hba;
u32 val;
struct hpt_iop_request_ioctl_command __iomem *req;
int ioctl_retry = 0;
dprintk("scsi%d: hptiop_do_ioctl\n", hba->host->host_no);
/*
* check (in + out) buff size from application.
* outbuf must be dword aligned.
*/
if (((arg->inbuf_size + 3) & ~3) + arg->outbuf_size >
hba->max_request_size
- sizeof(struct hpt_iop_request_header)
- 4 * sizeof(u32)) {
dprintk("scsi%d: ioctl buf size (%d/%d) is too large\n",
hba->host->host_no,
arg->inbuf_size, arg->outbuf_size);
arg->result = HPT_IOCTL_RESULT_FAILED;
return;
}
retry:
spin_lock_irq(hba->host->host_lock);
val = readl(&hba->iop->inbound_queue);
if (val == IOPMU_QUEUE_EMPTY) {
spin_unlock_irq(hba->host->host_lock);
dprintk("scsi%d: no free req for ioctl\n", hba->host->host_no);
arg->result = -1;
return;
}
req = (struct hpt_iop_request_ioctl_command __iomem *)
((unsigned long)hba->iop + val);
writel(HPT_CTL_CODE_LINUX_TO_IOP(arg->ioctl_code),
&req->ioctl_code);
writel(arg->inbuf_size, &req->inbuf_size);
writel(arg->outbuf_size, &req->outbuf_size);
/*
* use the buffer on the IOP local memory first, then copy it
* back to host.
* the caller's request buffer shoudl be little-endian.
*/
if (arg->inbuf_size)
memcpy_toio(req->buf, arg->inbuf, arg->inbuf_size);
/* correct the controller ID for IOP */
if ((arg->ioctl_code == HPT_IOCTL_GET_CHANNEL_INFO ||
arg->ioctl_code == HPT_IOCTL_GET_CONTROLLER_INFO_V2 ||
arg->ioctl_code == HPT_IOCTL_GET_CONTROLLER_INFO)
&& arg->inbuf_size >= sizeof(u32))
writel(0, req->buf);
writel(IOP_REQUEST_TYPE_IOCTL_COMMAND, &req->header.type);
writel(0, &req->header.flags);
writel(offsetof(struct hpt_iop_request_ioctl_command, buf)
+ arg->inbuf_size, &req->header.size);
writel((u32)(unsigned long)arg, &req->header.context);
writel(BITS_PER_LONG > 32 ? (u32)((unsigned long)arg>>32) : 0,
&req->header.context_hi32);
writel(IOP_RESULT_PENDING, &req->header.result);
arg->result = HPT_IOCTL_RESULT_FAILED;
arg->done = hptiop_ioctl_done;
writel(val, &hba->iop->inbound_queue);
hptiop_pci_posting_flush(hba->iop);
spin_unlock_irq(hba->host->host_lock);
wait_event_timeout(hba->ioctl_wq, arg->done == NULL, 60 * HZ);
if (arg->done != NULL) {
hptiop_reset_hba(hba);
if (ioctl_retry++ < 3)
goto retry;
}
dprintk("hpt_iop_ioctl %x result %d\n",
arg->ioctl_code, arg->result);
}
static int __hpt_do_ioctl(struct hptiop_hba *hba, u32 code, void *inbuf,
u32 insize, void *outbuf, u32 outsize)
{
struct hpt_ioctl_k arg;
arg.hba = hba;
arg.ioctl_code = code;
arg.inbuf = inbuf;
arg.outbuf = outbuf;
arg.inbuf_size = insize;
arg.outbuf_size = outsize;
arg.bytes_returned = NULL;
hptiop_do_ioctl(&arg);
return arg.result;
}
static inline int hpt_id_valid(__le32 id)
{
return id != 0 && id != cpu_to_le32(0xffffffff);
}
static int hptiop_get_controller_info(struct hptiop_hba *hba,
struct hpt_controller_info *pinfo)
{
int id = 0;
return __hpt_do_ioctl(hba, HPT_IOCTL_GET_CONTROLLER_INFO,
&id, sizeof(int), pinfo, sizeof(*pinfo));
}
static int hptiop_get_channel_info(struct hptiop_hba *hba, int bus,
struct hpt_channel_info *pinfo)
{
u32 ids[2];
ids[0] = 0;
ids[1] = bus;
return __hpt_do_ioctl(hba, HPT_IOCTL_GET_CHANNEL_INFO,
ids, sizeof(ids), pinfo, sizeof(*pinfo));
}
static int hptiop_get_logical_devices(struct hptiop_hba *hba,
__le32 *pids, int maxcount)
{
int i;
u32 count = maxcount - 1;
if (__hpt_do_ioctl(hba, HPT_IOCTL_GET_LOGICAL_DEVICES,
&count, sizeof(u32),
pids, sizeof(u32) * maxcount))
return -1;
maxcount = le32_to_cpu(pids[0]);
for (i = 0; i < maxcount; i++)
pids[i] = pids[i+1];
return maxcount;
}
static int hptiop_get_device_info_v3(struct hptiop_hba *hba, __le32 id,
struct hpt_logical_device_info_v3 *pinfo)
{
return __hpt_do_ioctl(hba, HPT_IOCTL_GET_DEVICE_INFO_V3,
&id, sizeof(u32),
pinfo, sizeof(*pinfo));
}
static const char *get_array_status(struct hpt_logical_device_info_v3 *devinfo)
{
static char s[64];
u32 flags = le32_to_cpu(devinfo->u.array.flags);
u32 trans_prog = le32_to_cpu(devinfo->u.array.transforming_progress);
u32 reb_prog = le32_to_cpu(devinfo->u.array.rebuilding_progress);
if (flags & ARRAY_FLAG_DISABLED)
return "Disabled";
else if (flags & ARRAY_FLAG_TRANSFORMING)
sprintf(s, "Expanding/Migrating %d.%d%%%s%s",
trans_prog / 100,
trans_prog % 100,
(flags & (ARRAY_FLAG_NEEDBUILDING|ARRAY_FLAG_BROKEN))?
", Critical" : "",
((flags & ARRAY_FLAG_NEEDINITIALIZING) &&
!(flags & ARRAY_FLAG_REBUILDING) &&
!(flags & ARRAY_FLAG_INITIALIZING))?
", Unintialized" : "");
else if ((flags & ARRAY_FLAG_BROKEN) &&
devinfo->u.array.array_type != AT_RAID6)
return "Critical";
else if (flags & ARRAY_FLAG_REBUILDING)
sprintf(s,
(flags & ARRAY_FLAG_NEEDINITIALIZING)?
"%sBackground initializing %d.%d%%" :
"%sRebuilding %d.%d%%",
(flags & ARRAY_FLAG_BROKEN)? "Critical, " : "",
reb_prog / 100,
reb_prog % 100);
else if (flags & ARRAY_FLAG_VERIFYING)
sprintf(s, "%sVerifying %d.%d%%",
(flags & ARRAY_FLAG_BROKEN)? "Critical, " : "",
reb_prog / 100,
reb_prog % 100);
else if (flags & ARRAY_FLAG_INITIALIZING)
sprintf(s, "%sForground initializing %d.%d%%",
(flags & ARRAY_FLAG_BROKEN)? "Critical, " : "",
reb_prog / 100,
reb_prog % 100);
else if (flags & ARRAY_FLAG_NEEDTRANSFORM)
sprintf(s,"%s%s%s", "Need Expanding/Migrating",
(flags & ARRAY_FLAG_BROKEN)? "Critical, " : "",
((flags & ARRAY_FLAG_NEEDINITIALIZING) &&
!(flags & ARRAY_FLAG_REBUILDING) &&
!(flags & ARRAY_FLAG_INITIALIZING))?
", Unintialized" : "");
else if (flags & ARRAY_FLAG_NEEDINITIALIZING &&
!(flags & ARRAY_FLAG_REBUILDING) &&
!(flags & ARRAY_FLAG_INITIALIZING))
sprintf(s,"%sUninitialized",
(flags & ARRAY_FLAG_BROKEN)? "Critical, " : "");
else if ((flags & ARRAY_FLAG_NEEDBUILDING) ||
(flags & ARRAY_FLAG_BROKEN))
return "Critical";
else
return "Normal";
return s;
}
static void hptiop_dump_devinfo(struct hptiop_hba *hba,
struct hptiop_getinfo *pinfo, __le32 id, int indent)
{
struct hpt_logical_device_info_v3 devinfo;
int i;
u64 capacity;
for (i = 0; i < indent; i++)
hptiop_copy_info(pinfo, "\t");
if (hptiop_get_device_info_v3(hba, id, &devinfo)) {
hptiop_copy_info(pinfo, "unknown\n");
return;
}
switch (devinfo.type) {
case LDT_DEVICE: {
struct hd_driveid *driveid;
u32 flags = le32_to_cpu(devinfo.u.device.flags);
driveid = (struct hd_driveid *)devinfo.u.device.ident;
/* model[] is 40 chars long, but we just want 20 chars here */
driveid->model[20] = 0;
if (indent)
if (flags & DEVICE_FLAG_DISABLED)
hptiop_copy_info(pinfo,"Missing\n");
else
hptiop_copy_info(pinfo, "CH%d %s\n",
devinfo.u.device.path_id + 1,
driveid->model);
else {
capacity = le64_to_cpu(devinfo.capacity) * 512;
do_div(capacity, 1000000);
hptiop_copy_info(pinfo,
"CH%d %s, %lluMB, %s %s%s%s%s\n",
devinfo.u.device.path_id + 1,
driveid->model,
capacity,
(flags & DEVICE_FLAG_DISABLED)?
"Disabled" : "Normal",
devinfo.u.device.read_ahead_enabled?
"[RA]" : "",
devinfo.u.device.write_cache_enabled?
"[WC]" : "",
devinfo.u.device.TCQ_enabled?
"[TCQ]" : "",
devinfo.u.device.NCQ_enabled?
"[NCQ]" : ""
);
}
break;
}
case LDT_ARRAY:
if (devinfo.target_id != INVALID_TARGET_ID)
hptiop_copy_info(pinfo, "[DISK %d_%d] ",
devinfo.vbus_id, devinfo.target_id);
capacity = le64_to_cpu(devinfo.capacity) * 512;
do_div(capacity, 1000000);
hptiop_copy_info(pinfo, "%s (%s), %lluMB, %s\n",
devinfo.u.array.name,
devinfo.u.array.array_type==AT_RAID0? "RAID0" :
devinfo.u.array.array_type==AT_RAID1? "RAID1" :
devinfo.u.array.array_type==AT_RAID5? "RAID5" :
devinfo.u.array.array_type==AT_RAID6? "RAID6" :
devinfo.u.array.array_type==AT_JBOD? "JBOD" :
"unknown",
capacity,
get_array_status(&devinfo));
for (i = 0; i < devinfo.u.array.ndisk; i++) {
if (hpt_id_valid(devinfo.u.array.members[i])) {
if (cpu_to_le16(1<<i) &
devinfo.u.array.critical_members)
hptiop_copy_info(pinfo, "\t*");
hptiop_dump_devinfo(hba, pinfo,
devinfo.u.array.members[i], indent+1);
}
else
hptiop_copy_info(pinfo, "\tMissing\n");
}
if (id == devinfo.u.array.transform_source) {
hptiop_copy_info(pinfo, "\tExpanding/Migrating to:\n");
hptiop_dump_devinfo(hba, pinfo,
devinfo.u.array.transform_target, indent+1);
}
break;
}
}
static ssize_t hptiop_show_version(struct class_device *class_dev, char *buf)
{
return snprintf(buf, PAGE_SIZE, "%s\n", driver_ver);
}
static ssize_t hptiop_cdev_read(struct file *filp, char __user *buf,
size_t count, loff_t *ppos)
{
struct hptiop_hba *hba = filp->private_data;
struct hptiop_getinfo info;
int i, j, ndev;
struct hpt_controller_info con_info;
struct hpt_channel_info chan_info;
__le32 ids[32];
info.buffer = buf;
info.buflength = count;
info.bufoffset = ppos ? *ppos : 0;
info.filpos = 0;
info.buffillen = 0;
if (hptiop_get_controller_info(hba, &con_info))
return -EIO;
for (i = 0; i < con_info.num_buses; i++) {
if (hptiop_get_channel_info(hba, i, &chan_info) == 0) {
if (hpt_id_valid(chan_info.devices[0]))
hptiop_dump_devinfo(hba, &info,
chan_info.devices[0], 0);
if (hpt_id_valid(chan_info.devices[1]))
hptiop_dump_devinfo(hba, &info,
chan_info.devices[1], 0);
}
}
ndev = hptiop_get_logical_devices(hba, ids,
sizeof(ids) / sizeof(ids[0]));
/*
* if hptiop_get_logical_devices fails, ndev==-1 and it just
* output nothing here
*/
for (j = 0; j < ndev; j++)
hptiop_dump_devinfo(hba, &info, ids[j], 0);
if (ppos)
*ppos += info.buffillen;
return info.buffillen;
}
static int hptiop_cdev_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
struct hptiop_hba *hba = file->private_data;
struct hpt_ioctl_u ioctl_u;
struct hpt_ioctl_k ioctl_k;
u32 bytes_returned;
int err = -EINVAL;
if (copy_from_user(&ioctl_u,
(void __user *)arg, sizeof(struct hpt_ioctl_u)))
return -EINVAL;
if (ioctl_u.magic != HPT_IOCTL_MAGIC)
return -EINVAL;
ioctl_k.ioctl_code = ioctl_u.ioctl_code;
ioctl_k.inbuf = NULL;
ioctl_k.inbuf_size = ioctl_u.inbuf_size;
ioctl_k.outbuf = NULL;
ioctl_k.outbuf_size = ioctl_u.outbuf_size;
ioctl_k.hba = hba;
ioctl_k.bytes_returned = &bytes_returned;
/* verify user buffer */
if ((ioctl_k.inbuf_size && !access_ok(VERIFY_READ,
ioctl_u.inbuf, ioctl_k.inbuf_size)) ||
(ioctl_k.outbuf_size && !access_ok(VERIFY_WRITE,
ioctl_u.outbuf, ioctl_k.outbuf_size)) ||
(ioctl_u.bytes_returned && !access_ok(VERIFY_WRITE,
ioctl_u.bytes_returned, sizeof(u32))) ||
ioctl_k.inbuf_size + ioctl_k.outbuf_size > 0x10000) {
dprintk("scsi%d: got bad user address\n", hba->host->host_no);
return -EINVAL;
}
/* map buffer to kernel. */
if (ioctl_k.inbuf_size) {
ioctl_k.inbuf = kmalloc(ioctl_k.inbuf_size, GFP_KERNEL);
if (!ioctl_k.inbuf) {
dprintk("scsi%d: fail to alloc inbuf\n",
hba->host->host_no);
err = -ENOMEM;
goto err_exit;
}
if (copy_from_user(ioctl_k.inbuf,
ioctl_u.inbuf, ioctl_k.inbuf_size)) {
goto err_exit;
}
}
if (ioctl_k.outbuf_size) {
ioctl_k.outbuf = kmalloc(ioctl_k.outbuf_size, GFP_KERNEL);
if (!ioctl_k.outbuf) {
dprintk("scsi%d: fail to alloc outbuf\n",
hba->host->host_no);
err = -ENOMEM;
goto err_exit;
}
}
hptiop_do_ioctl(&ioctl_k);
if (ioctl_k.result == HPT_IOCTL_RESULT_OK) {
if (ioctl_k.outbuf_size &&
copy_to_user(ioctl_u.outbuf,
ioctl_k.outbuf, ioctl_k.outbuf_size))
goto err_exit;
if (ioctl_u.bytes_returned &&
copy_to_user(ioctl_u.bytes_returned,
&bytes_returned, sizeof(u32)))
goto err_exit;
err = 0;
}
err_exit:
kfree(ioctl_k.inbuf);
kfree(ioctl_k.outbuf);
return err;
}
static int hptiop_cdev_open(struct inode *inode, struct file *file)
{
struct hptiop_hba *hba;
unsigned i = 0, minor = iminor(inode);
int ret = -ENODEV;
spin_lock(&hptiop_hba_list_lock);
list_for_each_entry(hba, &hptiop_hba_list, link) {
if (i == minor) {
file->private_data = hba;
ret = 0;
goto out;
}
i++;
}
out:
spin_unlock(&hptiop_hba_list_lock);
return ret;
}
static struct file_operations hptiop_cdev_fops = {
.owner = THIS_MODULE,
.read = hptiop_cdev_read,
.ioctl = hptiop_cdev_ioctl,
.open = hptiop_cdev_open,
};
static ssize_t hptiop_show_fw_version(struct class_device *class_dev, char *buf)
{
struct Scsi_Host *host = class_to_shost(class_dev);
@ -1296,19 +771,13 @@ static int __devinit hptiop_probe(struct pci_dev *pcidev,
goto unmap_pci_bar;
}
if (scsi_add_host(host, &pcidev->dev)) {
printk(KERN_ERR "scsi%d: scsi_add_host failed\n",
hba->host->host_no);
goto unmap_pci_bar;
}
pci_set_drvdata(pcidev, host);
if (request_irq(pcidev->irq, hptiop_intr, IRQF_SHARED,
driver_name, hba)) {
printk(KERN_ERR "scsi%d: request irq %d failed\n",
hba->host->host_no, pcidev->irq);
goto remove_scsi_host;
goto unmap_pci_bar;
}
/* Allocate request mem */
@ -1355,9 +824,12 @@ static int __devinit hptiop_probe(struct pci_dev *pcidev,
if (hptiop_initialize_iop(hba))
goto free_request_mem;
spin_lock(&hptiop_hba_list_lock);
list_add_tail(&hba->link, &hptiop_hba_list);
spin_unlock(&hptiop_hba_list_lock);
if (scsi_add_host(host, &pcidev->dev)) {
printk(KERN_ERR "scsi%d: scsi_add_host failed\n",
hba->host->host_no);
goto free_request_mem;
}
scsi_scan_host(host);
@ -1372,9 +844,6 @@ free_request_mem:
free_request_irq:
free_irq(hba->pcidev->irq, hba);
remove_scsi_host:
scsi_remove_host(host);
unmap_pci_bar:
iounmap(hba->iop);
@ -1422,10 +891,6 @@ static void hptiop_remove(struct pci_dev *pcidev)
scsi_remove_host(host);
spin_lock(&hptiop_hba_list_lock);
list_del_init(&hba->link);
spin_unlock(&hptiop_hba_list_lock);
hptiop_shutdown(pcidev);
free_irq(hba->pcidev->irq, hba);
@ -1462,27 +927,12 @@ static struct pci_driver hptiop_pci_driver = {
static int __init hptiop_module_init(void)
{
int error;
printk(KERN_INFO "%s %s\n", driver_name_long, driver_ver);
error = pci_register_driver(&hptiop_pci_driver);
if (error < 0)
return error;
hptiop_cdev_major = register_chrdev(0, "hptiop", &hptiop_cdev_fops);
if (hptiop_cdev_major < 0) {
printk(KERN_WARNING "unable to register hptiop device.\n");
return hptiop_cdev_major;
}
return 0;
return pci_register_driver(&hptiop_pci_driver);
}
static void __exit hptiop_module_exit(void)
{
dprintk("hptiop_module_exit\n");
unregister_chrdev(hptiop_cdev_major, "hptiop");
pci_unregister_driver(&hptiop_pci_driver);
}

209
drivers/scsi/iscsi_tcp.c
View File

@ -43,13 +43,10 @@
#include "iscsi_tcp.h"
#define ISCSI_TCP_VERSION "1.0-595"
MODULE_AUTHOR("Dmitry Yusupov <dmitry_yus@yahoo.com>, "
"Alex Aizman <itn780@yahoo.com>");
MODULE_DESCRIPTION("iSCSI/TCP data-path");
MODULE_LICENSE("GPL");
MODULE_VERSION(ISCSI_TCP_VERSION);
/* #define DEBUG_TCP */
#define DEBUG_ASSERT
@ -185,11 +182,19 @@ iscsi_hdr_extract(struct iscsi_tcp_conn *tcp_conn)
* must be called with session lock
*/
static void
__iscsi_ctask_cleanup(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask)
iscsi_tcp_cleanup_ctask(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask)
{
struct iscsi_tcp_cmd_task *tcp_ctask = ctask->dd_data;
struct iscsi_r2t_info *r2t;
struct scsi_cmnd *sc;
/* flush ctask's r2t queues */
while (__kfifo_get(tcp_ctask->r2tqueue, (void*)&r2t, sizeof(void*))) {
__kfifo_put(tcp_ctask->r2tpool.queue, (void*)&r2t,
sizeof(void*));
debug_scsi("iscsi_tcp_cleanup_ctask pending r2t dropped\n");
}
sc = ctask->sc;
if (unlikely(!sc))
return;
@ -374,6 +379,7 @@ iscsi_r2t_rsp(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask)
spin_unlock(&session->lock);
return 0;
}
rc = __kfifo_get(tcp_ctask->r2tpool.queue, (void*)&r2t, sizeof(void*));
BUG_ON(!rc);
@ -399,7 +405,7 @@ iscsi_r2t_rsp(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask)
tcp_ctask->exp_r2tsn = r2tsn + 1;
tcp_ctask->xmstate |= XMSTATE_SOL_HDR;
__kfifo_put(tcp_ctask->r2tqueue, (void*)&r2t, sizeof(void*));
__kfifo_put(conn->xmitqueue, (void*)&ctask, sizeof(void*));
list_move_tail(&ctask->running, &conn->xmitqueue);
scsi_queue_work(session->host, &conn->xmitwork);
conn->r2t_pdus_cnt++;
@ -477,6 +483,8 @@ iscsi_tcp_hdr_recv(struct iscsi_conn *conn)
case ISCSI_OP_SCSI_DATA_IN:
tcp_conn->in.ctask = session->cmds[itt];
rc = iscsi_data_rsp(conn, tcp_conn->in.ctask);
if (rc)
return rc;
/* fall through */
case ISCSI_OP_SCSI_CMD_RSP:
tcp_conn->in.ctask = session->cmds[itt];
@ -484,7 +492,7 @@ iscsi_tcp_hdr_recv(struct iscsi_conn *conn)
goto copy_hdr;
spin_lock(&session->lock);
__iscsi_ctask_cleanup(conn, tcp_conn->in.ctask);
iscsi_tcp_cleanup_ctask(conn, tcp_conn->in.ctask);
rc = __iscsi_complete_pdu(conn, hdr, NULL, 0);
spin_unlock(&session->lock);
break;
@ -500,13 +508,28 @@ iscsi_tcp_hdr_recv(struct iscsi_conn *conn)
break;
case ISCSI_OP_LOGIN_RSP:
case ISCSI_OP_TEXT_RSP:
case ISCSI_OP_LOGOUT_RSP:
case ISCSI_OP_NOOP_IN:
case ISCSI_OP_REJECT:
case ISCSI_OP_ASYNC_EVENT:
/*
* It is possible that we could get a PDU with a buffer larger
* than 8K, but there are no targets that currently do this.
* For now we fail until we find a vendor that needs it
*/
if (DEFAULT_MAX_RECV_DATA_SEGMENT_LENGTH <
tcp_conn->in.datalen) {
printk(KERN_ERR "iscsi_tcp: received buffer of len %u "
"but conn buffer is only %u (opcode %0x)\n",
tcp_conn->in.datalen,
DEFAULT_MAX_RECV_DATA_SEGMENT_LENGTH, opcode);
rc = ISCSI_ERR_PROTO;
break;
}
if (tcp_conn->in.datalen)
goto copy_hdr;
/* fall through */
case ISCSI_OP_LOGOUT_RSP:
case ISCSI_OP_NOOP_IN:
case ISCSI_OP_SCSI_TMFUNC_RSP:
rc = iscsi_complete_pdu(conn, hdr, NULL, 0);
break;
@ -523,7 +546,7 @@ copy_hdr:
* skbs to complete the command then we have to copy the header
* for later use
*/
if (tcp_conn->in.zero_copy_hdr && tcp_conn->in.copy <
if (tcp_conn->in.zero_copy_hdr && tcp_conn->in.copy <=
(tcp_conn->in.datalen + tcp_conn->in.padding +
(conn->datadgst_en ? 4 : 0))) {
debug_tcp("Copying header for later use. in.copy %d in.datalen"
@ -614,9 +637,9 @@ iscsi_ctask_copy(struct iscsi_tcp_conn *tcp_conn, struct iscsi_cmd_task *ctask,
* byte counters.
**/
static inline int
iscsi_tcp_copy(struct iscsi_tcp_conn *tcp_conn)
iscsi_tcp_copy(struct iscsi_conn *conn)
{
void *buf = tcp_conn->data;
struct iscsi_tcp_conn *tcp_conn = conn->dd_data;
int buf_size = tcp_conn->in.datalen;
int buf_left = buf_size - tcp_conn->data_copied;
int size = min(tcp_conn->in.copy, buf_left);
@ -627,7 +650,7 @@ iscsi_tcp_copy(struct iscsi_tcp_conn *tcp_conn)
BUG_ON(size <= 0);
rc = skb_copy_bits(tcp_conn->in.skb, tcp_conn->in.offset,
(char*)buf + tcp_conn->data_copied, size);
(char*)conn->data + tcp_conn->data_copied, size);
BUG_ON(rc);
tcp_conn->in.offset += size;
@ -745,10 +768,11 @@ static int iscsi_scsi_data_in(struct iscsi_conn *conn)
done:
/* check for non-exceptional status */
if (tcp_conn->in.hdr->flags & ISCSI_FLAG_DATA_STATUS) {
debug_scsi("done [sc %lx res %d itt 0x%x]\n",
(long)sc, sc->result, ctask->itt);
debug_scsi("done [sc %lx res %d itt 0x%x flags 0x%x]\n",
(long)sc, sc->result, ctask->itt,
tcp_conn->in.hdr->flags);
spin_lock(&conn->session->lock);
__iscsi_ctask_cleanup(conn, ctask);
iscsi_tcp_cleanup_ctask(conn, ctask);
__iscsi_complete_pdu(conn, tcp_conn->in.hdr, NULL, 0);
spin_unlock(&conn->session->lock);
}
@ -769,26 +793,25 @@ iscsi_data_recv(struct iscsi_conn *conn)
break;
case ISCSI_OP_SCSI_CMD_RSP:
spin_lock(&conn->session->lock);
__iscsi_ctask_cleanup(conn, tcp_conn->in.ctask);
iscsi_tcp_cleanup_ctask(conn, tcp_conn->in.ctask);
spin_unlock(&conn->session->lock);
case ISCSI_OP_TEXT_RSP:
case ISCSI_OP_LOGIN_RSP:
case ISCSI_OP_NOOP_IN:
case ISCSI_OP_ASYNC_EVENT:
case ISCSI_OP_REJECT:
/*
* Collect data segment to the connection's data
* placeholder
*/
if (iscsi_tcp_copy(tcp_conn)) {
if (iscsi_tcp_copy(conn)) {
rc = -EAGAIN;
goto exit;
}
rc = iscsi_complete_pdu(conn, tcp_conn->in.hdr, tcp_conn->data,
rc = iscsi_complete_pdu(conn, tcp_conn->in.hdr, conn->data,
tcp_conn->in.datalen);
if (!rc && conn->datadgst_en && opcode != ISCSI_OP_LOGIN_RSP)
iscsi_recv_digest_update(tcp_conn, tcp_conn->data,
iscsi_recv_digest_update(tcp_conn, conn->data,
tcp_conn->in.datalen);
break;
default:
@ -843,7 +866,7 @@ more:
if (rc == -EAGAIN)
goto nomore;
else {
iscsi_conn_failure(conn, rc);
iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED);
return 0;
}
}
@ -897,7 +920,7 @@ more:
if (rc) {
if (rc == -EAGAIN)
goto again;
iscsi_conn_failure(conn, rc);
iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED);
return 0;
}
tcp_conn->in.copy -= tcp_conn->in.padding;
@ -1028,9 +1051,8 @@ iscsi_conn_set_callbacks(struct iscsi_conn *conn)
}
static void
iscsi_conn_restore_callbacks(struct iscsi_conn *conn)
iscsi_conn_restore_callbacks(struct iscsi_tcp_conn *tcp_conn)
{
struct iscsi_tcp_conn *tcp_conn = conn->dd_data;
struct sock *sk = tcp_conn->sock->sk;
/* restore socket callbacks, see also: iscsi_conn_set_callbacks() */
@ -1308,7 +1330,7 @@ iscsi_tcp_cmd_init(struct iscsi_cmd_task *ctask)
ctask->imm_count -
ctask->unsol_count;
debug_scsi("cmd [itt %x total %d imm %d imm_data %d "
debug_scsi("cmd [itt 0x%x total %d imm %d imm_data %d "
"r2t_data %d]\n",
ctask->itt, ctask->total_length, ctask->imm_count,
ctask->unsol_count, tcp_ctask->r2t_data_count);
@ -1636,7 +1658,7 @@ handle_xmstate_sol_data(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask)
}
solicit_again:
/*
* send Data-Out whitnin this R2T sequence.
* send Data-Out within this R2T sequence.
*/
if (!r2t->data_count)
goto data_out_done;
@ -1731,7 +1753,7 @@ handle_xmstate_w_pad(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask)
struct iscsi_tcp_cmd_task *tcp_ctask = ctask->dd_data;
struct iscsi_tcp_conn *tcp_conn = conn->dd_data;
struct iscsi_data_task *dtask = tcp_ctask->dtask;
int sent, rc;
int sent = 0, rc;
tcp_ctask->xmstate &= ~XMSTATE_W_PAD;
iscsi_buf_init_iov(&tcp_ctask->sendbuf, (char*)&tcp_ctask->pad,
@ -1900,26 +1922,31 @@ iscsi_tcp_conn_create(struct iscsi_cls_session *cls_session, uint32_t conn_idx)
tcp_conn->in_progress = IN_PROGRESS_WAIT_HEADER;
/* initial operational parameters */
tcp_conn->hdr_size = sizeof(struct iscsi_hdr);
tcp_conn->data_size = DEFAULT_MAX_RECV_DATA_SEGMENT_LENGTH;
/* allocate initial PDU receive place holder */
if (tcp_conn->data_size <= PAGE_SIZE)
tcp_conn->data = kmalloc(tcp_conn->data_size, GFP_KERNEL);
else
tcp_conn->data = (void*)__get_free_pages(GFP_KERNEL,
get_order(tcp_conn->data_size));
if (!tcp_conn->data)
goto max_recv_dlenght_alloc_fail;
return cls_conn;
max_recv_dlenght_alloc_fail:
kfree(tcp_conn);
tcp_conn_alloc_fail:
iscsi_conn_teardown(cls_conn);
return NULL;
}
static void
iscsi_tcp_release_conn(struct iscsi_conn *conn)
{
struct iscsi_tcp_conn *tcp_conn = conn->dd_data;
if (!tcp_conn->sock)
return;
sock_hold(tcp_conn->sock->sk);
iscsi_conn_restore_callbacks(tcp_conn);
sock_put(tcp_conn->sock->sk);
sock_release(tcp_conn->sock);
tcp_conn->sock = NULL;
conn->recv_lock = NULL;
}
static void
iscsi_tcp_conn_destroy(struct iscsi_cls_conn *cls_conn)
{
@ -1930,6 +1957,7 @@ iscsi_tcp_conn_destroy(struct iscsi_cls_conn *cls_conn)
if (conn->hdrdgst_en || conn->datadgst_en)
digest = 1;
iscsi_tcp_release_conn(conn);
iscsi_conn_teardown(cls_conn);
/* now free tcp_conn */
@ -1944,15 +1972,18 @@ iscsi_tcp_conn_destroy(struct iscsi_cls_conn *cls_conn)
crypto_free_tfm(tcp_conn->data_rx_tfm);
}
/* free conn->data, size = MaxRecvDataSegmentLength */
if (tcp_conn->data_size <= PAGE_SIZE)
kfree(tcp_conn->data);
else
free_pages((unsigned long)tcp_conn->data,
get_order(tcp_conn->data_size));
kfree(tcp_conn);
}
static void
iscsi_tcp_conn_stop(struct iscsi_cls_conn *cls_conn, int flag)
{
struct iscsi_conn *conn = cls_conn->dd_data;
iscsi_conn_stop(cls_conn, flag);
iscsi_tcp_release_conn(conn);
}
static int
iscsi_tcp_conn_bind(struct iscsi_cls_session *cls_session,
struct iscsi_cls_conn *cls_conn, uint64_t transport_eph,
@ -2001,52 +2032,6 @@ iscsi_tcp_conn_bind(struct iscsi_cls_session *cls_session,
return 0;
}
static void
iscsi_tcp_cleanup_ctask(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask)
{
struct iscsi_tcp_cmd_task *tcp_ctask = ctask->dd_data;
struct iscsi_r2t_info *r2t;
/* flush ctask's r2t queues */
while (__kfifo_get(tcp_ctask->r2tqueue, (void*)&r2t, sizeof(void*)))
__kfifo_put(tcp_ctask->r2tpool.queue, (void*)&r2t,
sizeof(void*));
__iscsi_ctask_cleanup(conn, ctask);
}
static void
iscsi_tcp_suspend_conn_rx(struct iscsi_conn *conn)
{
struct iscsi_tcp_conn *tcp_conn = conn->dd_data;
struct sock *sk;
if (!tcp_conn->sock)
return;
sk = tcp_conn->sock->sk;
write_lock_bh(&sk->sk_callback_lock);
set_bit(ISCSI_SUSPEND_BIT, &conn->suspend_rx);
write_unlock_bh(&sk->sk_callback_lock);
}
static void
iscsi_tcp_terminate_conn(struct iscsi_conn *conn)
{
struct iscsi_tcp_conn *tcp_conn = conn->dd_data;
if (!tcp_conn->sock)
return;
sock_hold(tcp_conn->sock->sk);
iscsi_conn_restore_callbacks(conn);
sock_put(tcp_conn->sock->sk);
sock_release(tcp_conn->sock);
tcp_conn->sock = NULL;
conn->recv_lock = NULL;
}
/* called with host lock */
static void
iscsi_tcp_mgmt_init(struct iscsi_conn *conn, struct iscsi_mgmt_task *mtask,
@ -2057,6 +2042,7 @@ iscsi_tcp_mgmt_init(struct iscsi_conn *conn, struct iscsi_mgmt_task *mtask,
iscsi_buf_init_iov(&tcp_mtask->headbuf, (char*)mtask->hdr,
sizeof(struct iscsi_hdr));
tcp_mtask->xmstate = XMSTATE_IMM_HDR;
tcp_mtask->sent = 0;
if (mtask->data_count)
iscsi_buf_init_iov(&tcp_mtask->sendbuf, (char*)mtask->data,
@ -2138,39 +2124,6 @@ iscsi_conn_set_param(struct iscsi_cls_conn *cls_conn, enum iscsi_param param,
int value;
switch(param) {
case ISCSI_PARAM_MAX_RECV_DLENGTH: {
char *saveptr = tcp_conn->data;
gfp_t flags = GFP_KERNEL;
sscanf(buf, "%d", &value);
if (tcp_conn->data_size >= value) {
iscsi_set_param(cls_conn, param, buf, buflen);
break;
}
spin_lock_bh(&session->lock);
if (conn->stop_stage == STOP_CONN_RECOVER)
flags = GFP_ATOMIC;
spin_unlock_bh(&session->lock);
if (value <= PAGE_SIZE)
tcp_conn->data = kmalloc(value, flags);
else
tcp_conn->data = (void*)__get_free_pages(flags,
get_order(value));
if (tcp_conn->data == NULL) {
tcp_conn->data = saveptr;
return -ENOMEM;
}
if (tcp_conn->data_size <= PAGE_SIZE)
kfree(saveptr);
else
free_pages((unsigned long)saveptr,
get_order(tcp_conn->data_size));
iscsi_set_param(cls_conn, param, buf, buflen);
tcp_conn->data_size = value;
break;
}
case ISCSI_PARAM_HDRDGST_EN:
iscsi_set_param(cls_conn, param, buf, buflen);
tcp_conn->hdr_size = sizeof(struct iscsi_hdr);
@ -2361,8 +2314,7 @@ static void iscsi_tcp_session_destroy(struct iscsi_cls_session *cls_session)
}
static struct scsi_host_template iscsi_sht = {
.name = "iSCSI Initiator over TCP/IP, v"
ISCSI_TCP_VERSION,
.name = "iSCSI Initiator over TCP/IP",
.queuecommand = iscsi_queuecommand,
.change_queue_depth = iscsi_change_queue_depth,
.can_queue = ISCSI_XMIT_CMDS_MAX - 1,
@ -2414,10 +2366,7 @@ static struct iscsi_transport iscsi_tcp_transport = {
.get_conn_param = iscsi_tcp_conn_get_param,
.get_session_param = iscsi_session_get_param,
.start_conn = iscsi_conn_start,
.stop_conn = iscsi_conn_stop,
/* these are called as part of conn recovery */
.suspend_conn_recv = iscsi_tcp_suspend_conn_rx,
.terminate_conn = iscsi_tcp_terminate_conn,
.stop_conn = iscsi_tcp_conn_stop,
/* IO */
.send_pdu = iscsi_conn_send_pdu,
.get_stats = iscsi_conn_get_stats,

2
drivers/scsi/iscsi_tcp.h
View File

@ -78,8 +78,6 @@ struct iscsi_tcp_conn {
char hdrext[4*sizeof(__u16) +
sizeof(__u32)];
int data_copied;
char *data; /* data placeholder */
int data_size; /* actual recv_dlength */
int stop_stage; /* conn_stop() flag: *
* stop to recover, *
* stop to terminate */

206
drivers/scsi/libiscsi.c
View File

@ -189,6 +189,7 @@ static void iscsi_complete_command(struct iscsi_session *session,
{
struct scsi_cmnd *sc = ctask->sc;
ctask->state = ISCSI_TASK_COMPLETED;
ctask->sc = NULL;
list_del_init(&ctask->running);
__kfifo_put(session->cmdpool.queue, (void*)&ctask, sizeof(void*));
@ -275,6 +276,25 @@ out:
return rc;
}
static void iscsi_tmf_rsp(struct iscsi_conn *conn, struct iscsi_hdr *hdr)
{
struct iscsi_tm_rsp *tmf = (struct iscsi_tm_rsp *)hdr;
conn->exp_statsn = be32_to_cpu(hdr->statsn) + 1;
conn->tmfrsp_pdus_cnt++;
if (conn->tmabort_state != TMABORT_INITIAL)
return;
if (tmf->response == ISCSI_TMF_RSP_COMPLETE)
conn->tmabort_state = TMABORT_SUCCESS;
else if (tmf->response == ISCSI_TMF_RSP_NO_TASK)
conn->tmabort_state = TMABORT_NOT_FOUND;
else
conn->tmabort_state = TMABORT_FAILED;
wake_up(&conn->ehwait);
}
/**
* __iscsi_complete_pdu - complete pdu
* @conn: iscsi conn
@ -340,6 +360,10 @@ int __iscsi_complete_pdu(struct iscsi_conn *conn, struct iscsi_hdr *hdr,
switch(opcode) {
case ISCSI_OP_LOGOUT_RSP:
if (datalen) {
rc = ISCSI_ERR_PROTO;
break;
}
conn->exp_statsn = be32_to_cpu(hdr->statsn) + 1;
/* fall through */
case ISCSI_OP_LOGIN_RSP:
@ -348,7 +372,8 @@ int __iscsi_complete_pdu(struct iscsi_conn *conn, struct iscsi_hdr *hdr,
* login related PDU's exp_statsn is handled in
* userspace
*/
rc = iscsi_recv_pdu(conn->cls_conn, hdr, data, datalen);
if (iscsi_recv_pdu(conn->cls_conn, hdr, data, datalen))
rc = ISCSI_ERR_CONN_FAILED;
list_del(&mtask->running);
if (conn->login_mtask != mtask)
__kfifo_put(session->mgmtpool.queue,
@ -360,25 +385,17 @@ int __iscsi_complete_pdu(struct iscsi_conn *conn, struct iscsi_hdr *hdr,
break;
}
conn->exp_statsn = be32_to_cpu(hdr->statsn) + 1;
conn->tmfrsp_pdus_cnt++;
if (conn->tmabort_state == TMABORT_INITIAL) {
conn->tmabort_state =
((struct iscsi_tm_rsp *)hdr)->
response == ISCSI_TMF_RSP_COMPLETE ?
TMABORT_SUCCESS:TMABORT_FAILED;
/* unblock eh_abort() */
wake_up(&conn->ehwait);
}
iscsi_tmf_rsp(conn, hdr);
break;
case ISCSI_OP_NOOP_IN:
if (hdr->ttt != ISCSI_RESERVED_TAG) {
if (hdr->ttt != ISCSI_RESERVED_TAG || datalen) {
rc = ISCSI_ERR_PROTO;
break;
}
conn->exp_statsn = be32_to_cpu(hdr->statsn) + 1;
rc = iscsi_recv_pdu(conn->cls_conn, hdr, data, datalen);
if (iscsi_recv_pdu(conn->cls_conn, hdr, data, datalen))
rc = ISCSI_ERR_CONN_FAILED;
list_del(&mtask->running);
if (conn->login_mtask != mtask)
__kfifo_put(session->mgmtpool.queue,
@ -391,14 +408,21 @@ int __iscsi_complete_pdu(struct iscsi_conn *conn, struct iscsi_hdr *hdr,
} else if (itt == ISCSI_RESERVED_TAG) {
switch(opcode) {
case ISCSI_OP_NOOP_IN:
if (!datalen) {
if (datalen) {
rc = ISCSI_ERR_PROTO;
break;
}
rc = iscsi_check_assign_cmdsn(session,
(struct iscsi_nopin*)hdr);
if (!rc && hdr->ttt != ISCSI_RESERVED_TAG)
rc = iscsi_recv_pdu(conn->cls_conn,
hdr, NULL, 0);
} else
rc = ISCSI_ERR_PROTO;
if (rc)
break;
if (hdr->ttt == ISCSI_RESERVED_TAG)
break;
if (iscsi_recv_pdu(conn->cls_conn, hdr, NULL, 0))
rc = ISCSI_ERR_CONN_FAILED;
break;
case ISCSI_OP_REJECT:
/* we need sth like iscsi_reject_rsp()*/
@ -568,20 +592,24 @@ static int iscsi_data_xmit(struct iscsi_conn *conn)
}
/* process command queue */
while (__kfifo_get(conn->xmitqueue, (void*)&conn->ctask,
sizeof(void*))) {
spin_lock_bh(&conn->session->lock);
while (!list_empty(&conn->xmitqueue)) {
/*
* iscsi tcp may readd the task to the xmitqueue to send
* write data
*/
spin_lock_bh(&conn->session->lock);
if (list_empty(&conn->ctask->running))
list_add_tail(&conn->ctask->running, &conn->run_list);
conn->ctask = list_entry(conn->xmitqueue.next,
struct iscsi_cmd_task, running);
conn->ctask->state = ISCSI_TASK_RUNNING;
list_move_tail(conn->xmitqueue.next, &conn->run_list);
spin_unlock_bh(&conn->session->lock);
rc = tt->xmit_cmd_task(conn, conn->ctask);
if (rc)
goto again;
spin_lock_bh(&conn->session->lock);
}
spin_unlock_bh(&conn->session->lock);
/* done with this ctask */
conn->ctask = NULL;
@ -691,6 +719,7 @@ int iscsi_queuecommand(struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *))
sc->SCp.phase = session->age;
sc->SCp.ptr = (char *)ctask;
ctask->state = ISCSI_TASK_PENDING;
ctask->mtask = NULL;
ctask->conn = conn;
ctask->sc = sc;
@ -700,7 +729,7 @@ int iscsi_queuecommand(struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *))
session->tt->init_cmd_task(ctask);
__kfifo_put(conn->xmitqueue, (void*)&ctask, sizeof(void*));
list_add_tail(&ctask->running, &conn->xmitqueue);
debug_scsi(
"ctask enq [%s cid %d sc %lx itt 0x%x len %d cmdsn %d win %d]\n",
sc->sc_data_direction == DMA_TO_DEVICE ? "write" : "read",
@ -977,31 +1006,27 @@ static int iscsi_exec_abort_task(struct scsi_cmnd *sc,
/*
* xmit mutex and session lock must be held
*/
#define iscsi_remove_task(tasktype) \
static struct iscsi_##tasktype * \
iscsi_remove_##tasktype(struct kfifo *fifo, uint32_t itt) \
{ \
int i, nr_tasks = __kfifo_len(fifo) / sizeof(void*); \
struct iscsi_##tasktype *task; \
\
debug_scsi("searching %d tasks\n", nr_tasks); \
\
for (i = 0; i < nr_tasks; i++) { \
__kfifo_get(fifo, (void*)&task, sizeof(void*)); \
debug_scsi("check task %u\n", task->itt); \
\
if (task->itt == itt) { \
debug_scsi("matched task\n"); \
return task; \
} \
\
__kfifo_put(fifo, (void*)&task, sizeof(void*)); \
} \
return NULL; \
}
static struct iscsi_mgmt_task *
iscsi_remove_mgmt_task(struct kfifo *fifo, uint32_t itt)
{
int i, nr_tasks = __kfifo_len(fifo) / sizeof(void*);
struct iscsi_mgmt_task *task;
iscsi_remove_task(mgmt_task);
iscsi_remove_task(cmd_task);
debug_scsi("searching %d tasks\n", nr_tasks);
for (i = 0; i < nr_tasks; i++) {
__kfifo_get(fifo, (void*)&task, sizeof(void*));
debug_scsi("check task %u\n", task->itt);
if (task->itt == itt) {
debug_scsi("matched task\n");
return task;
}
__kfifo_put(fifo, (void*)&task, sizeof(void*));
}
return NULL;
}
static int iscsi_ctask_mtask_cleanup(struct iscsi_cmd_task *ctask)
{
@ -1027,12 +1052,13 @@ static void fail_command(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask,
{
struct scsi_cmnd *sc;
conn->session->tt->cleanup_cmd_task(conn, ctask);
iscsi_ctask_mtask_cleanup(ctask);
sc = ctask->sc;
if (!sc)
return;
conn->session->tt->cleanup_cmd_task(conn, ctask);
iscsi_ctask_mtask_cleanup(ctask);
sc->result = err;
sc->resid = sc->request_bufflen;
iscsi_complete_command(conn->session, ctask);
@ -1043,7 +1069,6 @@ int iscsi_eh_abort(struct scsi_cmnd *sc)
struct iscsi_cmd_task *ctask = (struct iscsi_cmd_task *)sc->SCp.ptr;
struct iscsi_conn *conn = ctask->conn;
struct iscsi_session *session = conn->session;
struct iscsi_cmd_task *pending_ctask;
int rc;
conn->eh_abort_cnt++;
@ -1061,8 +1086,11 @@ int iscsi_eh_abort(struct scsi_cmnd *sc)
goto failed;
/* ctask completed before time out */
if (!ctask->sc)
goto success;
if (!ctask->sc) {
spin_unlock_bh(&session->lock);
debug_scsi("sc completed while abort in progress\n");
goto success_rel_mutex;
}
/* what should we do here ? */
if (conn->ctask == ctask) {
@ -1071,17 +1099,8 @@ int iscsi_eh_abort(struct scsi_cmnd *sc)
goto failed;
}
/* check for the easy pending cmd abort */
pending_ctask = iscsi_remove_cmd_task(conn->xmitqueue, ctask->itt);
if (pending_ctask) {
/* iscsi_tcp queues write transfers on the xmitqueue */
if (list_empty(&pending_ctask->running)) {
debug_scsi("found pending task\n");
goto success;
} else
__kfifo_put(conn->xmitqueue, (void*)&pending_ctask,
sizeof(void*));
}
if (ctask->state == ISCSI_TASK_PENDING)
goto success_cleanup;
conn->tmabort_state = TMABORT_INITIAL;
@ -1089,25 +1108,31 @@ int iscsi_eh_abort(struct scsi_cmnd *sc)
rc = iscsi_exec_abort_task(sc, ctask);
spin_lock_bh(&session->lock);
iscsi_ctask_mtask_cleanup(ctask);
if (rc || sc->SCp.phase != session->age ||
session->state != ISCSI_STATE_LOGGED_IN)
goto failed;
iscsi_ctask_mtask_cleanup(ctask);
/* ctask completed before tmf abort response */
switch (conn->tmabort_state) {
case TMABORT_SUCCESS:
goto success_cleanup;
case TMABORT_NOT_FOUND:
if (!ctask->sc) {
/* ctask completed before tmf abort response */
spin_unlock_bh(&session->lock);
debug_scsi("sc completed while abort in progress\n");
goto success;
goto success_rel_mutex;
}
if (conn->tmabort_state != TMABORT_SUCCESS) {
/* fall through */
default:
/* timedout or failed */
spin_unlock_bh(&session->lock);
iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED);
spin_lock_bh(&session->lock);
goto failed;
}
success:
success_cleanup:
debug_scsi("abort success [sc %lx itt 0x%x]\n", (long)sc, ctask->itt);
spin_unlock_bh(&session->lock);
@ -1121,6 +1146,7 @@ success:
spin_unlock(&session->lock);
write_unlock_bh(conn->recv_lock);
success_rel_mutex:
mutex_unlock(&conn->xmitmutex);
return SUCCESS;
@ -1263,6 +1289,7 @@ iscsi_session_setup(struct iscsi_transport *iscsit,
if (cmd_task_size)
ctask->dd_data = &ctask[1];
ctask->itt = cmd_i;
INIT_LIST_HEAD(&ctask->running);
}
spin_lock_init(&session->lock);
@ -1282,6 +1309,7 @@ iscsi_session_setup(struct iscsi_transport *iscsit,
if (mgmt_task_size)
mtask->dd_data = &mtask[1];
mtask->itt = ISCSI_MGMT_ITT_OFFSET + cmd_i;
INIT_LIST_HEAD(&mtask->running);
}
if (scsi_add_host(shost, NULL))
@ -1322,15 +1350,18 @@ void iscsi_session_teardown(struct iscsi_cls_session *cls_session)
{
struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);
struct iscsi_session *session = iscsi_hostdata(shost->hostdata);
struct module *owner = cls_session->transport->owner;
scsi_remove_host(shost);
iscsi_pool_free(&session->mgmtpool, (void**)session->mgmt_cmds);
iscsi_pool_free(&session->cmdpool, (void**)session->cmds);
kfree(session->targetname);
iscsi_destroy_session(cls_session);
scsi_host_put(shost);
module_put(cls_session->transport->owner);
module_put(owner);
}
EXPORT_SYMBOL_GPL(iscsi_session_teardown);
@ -1361,12 +1392,7 @@ iscsi_conn_setup(struct iscsi_cls_session *cls_session, uint32_t conn_idx)
conn->tmabort_state = TMABORT_INITIAL;
INIT_LIST_HEAD(&conn->run_list);
INIT_LIST_HEAD(&conn->mgmt_run_list);
/* initialize general xmit PDU commands queue */
conn->xmitqueue = kfifo_alloc(session->cmds_max * sizeof(void*),
GFP_KERNEL, NULL);
if (conn->xmitqueue == ERR_PTR(-ENOMEM))
goto xmitqueue_alloc_fail;
INIT_LIST_HEAD(&conn->xmitqueue);
/* initialize general immediate & non-immediate PDU commands queue */
conn->immqueue = kfifo_alloc(session->mgmtpool_max * sizeof(void*),
@ -1394,7 +1420,7 @@ iscsi_conn_setup(struct iscsi_cls_session *cls_session, uint32_t conn_idx)
data = kmalloc(DEFAULT_MAX_RECV_DATA_SEGMENT_LENGTH, GFP_KERNEL);
if (!data)
goto login_mtask_data_alloc_fail;
conn->login_mtask->data = data;
conn->login_mtask->data = conn->data = data;
init_timer(&conn->tmabort_timer);
mutex_init(&conn->xmitmutex);
@ -1410,8 +1436,6 @@ login_mtask_alloc_fail:
mgmtqueue_alloc_fail:
kfifo_free(conn->immqueue);
immqueue_alloc_fail:
kfifo_free(conn->xmitqueue);
xmitqueue_alloc_fail:
iscsi_destroy_conn(cls_conn);
return NULL;
}
@ -1432,12 +1456,6 @@ void iscsi_conn_teardown(struct iscsi_cls_conn *cls_conn)
set_bit(ISCSI_SUSPEND_BIT, &conn->suspend_tx);
mutex_lock(&conn->xmitmutex);
if (conn->c_stage == ISCSI_CONN_INITIAL_STAGE) {
if (session->tt->suspend_conn_recv)
session->tt->suspend_conn_recv(conn);
session->tt->terminate_conn(conn);
}
spin_lock_bh(&session->lock);
conn->c_stage = ISCSI_CONN_CLEANUP_WAIT;
@ -1474,7 +1492,8 @@ void iscsi_conn_teardown(struct iscsi_cls_conn *cls_conn)
}
spin_lock_bh(&session->lock);
kfree(conn->login_mtask->data);
kfree(conn->data);
kfree(conn->persistent_address);
__kfifo_put(session->mgmtpool.queue, (void*)&conn->login_mtask,
sizeof(void*));
list_del(&conn->item);
@ -1489,7 +1508,6 @@ void iscsi_conn_teardown(struct iscsi_cls_conn *cls_conn)
session->cmdsn = session->max_cmdsn = session->exp_cmdsn = 1;
spin_unlock_bh(&session->lock);
kfifo_free(conn->xmitqueue);
kfifo_free(conn->immqueue);
kfifo_free(conn->mgmtqueue);
@ -1572,7 +1590,7 @@ static void fail_all_commands(struct iscsi_conn *conn)
struct iscsi_cmd_task *ctask, *tmp;
/* flush pending */
while (__kfifo_get(conn->xmitqueue, (void*)&ctask, sizeof(void*))) {
list_for_each_entry_safe(ctask, tmp, &conn->xmitqueue, running) {
debug_scsi("failing pending sc %p itt 0x%x\n", ctask->sc,
ctask->itt);
fail_command(conn, ctask, DID_BUS_BUSY << 16);
@ -1615,8 +1633,9 @@ static void iscsi_start_session_recovery(struct iscsi_session *session,
set_bit(ISCSI_SUSPEND_BIT, &conn->suspend_tx);
spin_unlock_bh(&session->lock);
if (session->tt->suspend_conn_recv)
session->tt->suspend_conn_recv(conn);
write_lock_bh(conn->recv_lock);
set_bit(ISCSI_SUSPEND_BIT, &conn->suspend_rx);
write_unlock_bh(conn->recv_lock);
mutex_lock(&conn->xmitmutex);
/*
@ -1635,7 +1654,6 @@ static void iscsi_start_session_recovery(struct iscsi_session *session,
}
}
session->tt->terminate_conn(conn);
/*
* flush queues.
*/

101
drivers/scsi/lpfc/lpfc_attr.c
View File

@ -222,7 +222,7 @@ lpfc_issue_lip(struct Scsi_Host *host)
pmboxq->mb.mbxCommand = MBX_DOWN_LINK;
pmboxq->mb.mbxOwner = OWN_HOST;
mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO * 2);
if ((mbxstatus == MBX_SUCCESS) && (pmboxq->mb.mbxStatus == 0)) {
memset((void *)pmboxq, 0, sizeof (LPFC_MBOXQ_t));
@ -884,7 +884,7 @@ sysfs_mbox_write(struct kobject *kobj, char *buf, loff_t off, size_t count)
phba->sysfs_mbox.mbox == NULL ) {
sysfs_mbox_idle(phba);
spin_unlock_irq(host->host_lock);
return -EINVAL;
return -EAGAIN;
}
}
@ -1000,14 +1000,15 @@ sysfs_mbox_read(struct kobject *kobj, char *buf, loff_t off, size_t count)
spin_unlock_irq(phba->host->host_lock);
rc = lpfc_sli_issue_mbox_wait (phba,
phba->sysfs_mbox.mbox,
phba->fc_ratov * 2);
lpfc_mbox_tmo_val(phba,
phba->sysfs_mbox.mbox->mb.mbxCommand) * HZ);
spin_lock_irq(phba->host->host_lock);
}
if (rc != MBX_SUCCESS) {
sysfs_mbox_idle(phba);
spin_unlock_irq(host->host_lock);
return -ENODEV;
return (rc == MBX_TIMEOUT) ? -ETIME : -ENODEV;
}
phba->sysfs_mbox.state = SMBOX_READING;
}
@ -1016,7 +1017,7 @@ sysfs_mbox_read(struct kobject *kobj, char *buf, loff_t off, size_t count)
printk(KERN_WARNING "mbox_read: Bad State\n");
sysfs_mbox_idle(phba);
spin_unlock_irq(host->host_lock);
return -EINVAL;
return -EAGAIN;
}
memcpy(buf, (uint8_t *) & phba->sysfs_mbox.mbox->mb + off, count);
@ -1210,8 +1211,10 @@ lpfc_get_stats(struct Scsi_Host *shost)
struct lpfc_hba *phba = (struct lpfc_hba *)shost->hostdata;
struct lpfc_sli *psli = &phba->sli;
struct fc_host_statistics *hs = &phba->link_stats;
struct lpfc_lnk_stat * lso = &psli->lnk_stat_offsets;
LPFC_MBOXQ_t *pmboxq;
MAILBOX_t *pmb;
unsigned long seconds;
int rc = 0;
pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
@ -1272,22 +1275,103 @@ lpfc_get_stats(struct Scsi_Host *shost)
hs->invalid_crc_count = pmb->un.varRdLnk.crcCnt;
hs->error_frames = pmb->un.varRdLnk.crcCnt;
hs->link_failure_count -= lso->link_failure_count;
hs->loss_of_sync_count -= lso->loss_of_sync_count;
hs->loss_of_signal_count -= lso->loss_of_signal_count;
hs->prim_seq_protocol_err_count -= lso->prim_seq_protocol_err_count;
hs->invalid_tx_word_count -= lso->invalid_tx_word_count;
hs->invalid_crc_count -= lso->invalid_crc_count;
hs->error_frames -= lso->error_frames;
if (phba->fc_topology == TOPOLOGY_LOOP) {
hs->lip_count = (phba->fc_eventTag >> 1);
hs->lip_count -= lso->link_events;
hs->nos_count = -1;
} else {
hs->lip_count = -1;
hs->nos_count = (phba->fc_eventTag >> 1);
hs->nos_count -= lso->link_events;
}
hs->dumped_frames = -1;
/* FIX ME */
/*hs->SecondsSinceLastReset = (jiffies - lpfc_loadtime) / HZ;*/
seconds = get_seconds();
if (seconds < psli->stats_start)
hs->seconds_since_last_reset = seconds +
((unsigned long)-1 - psli->stats_start);
else
hs->seconds_since_last_reset = seconds - psli->stats_start;
return hs;
}
static void
lpfc_reset_stats(struct Scsi_Host *shost)
{
struct lpfc_hba *phba = (struct lpfc_hba *)shost->hostdata;
struct lpfc_sli *psli = &phba->sli;
struct lpfc_lnk_stat * lso = &psli->lnk_stat_offsets;
LPFC_MBOXQ_t *pmboxq;
MAILBOX_t *pmb;
int rc = 0;
pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!pmboxq)
return;
memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
pmb = &pmboxq->mb;
pmb->mbxCommand = MBX_READ_STATUS;
pmb->mbxOwner = OWN_HOST;
pmb->un.varWords[0] = 0x1; /* reset request */
pmboxq->context1 = NULL;
if ((phba->fc_flag & FC_OFFLINE_MODE) ||
(!(psli->sli_flag & LPFC_SLI2_ACTIVE)))
rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
else
rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
if (rc != MBX_SUCCESS) {
if (rc == MBX_TIMEOUT)
pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
else
mempool_free(pmboxq, phba->mbox_mem_pool);
return;
}
memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
pmb->mbxCommand = MBX_READ_LNK_STAT;
pmb->mbxOwner = OWN_HOST;
pmboxq->context1 = NULL;
if ((phba->fc_flag & FC_OFFLINE_MODE) ||
(!(psli->sli_flag & LPFC_SLI2_ACTIVE)))
rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
else
rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
if (rc != MBX_SUCCESS) {
if (rc == MBX_TIMEOUT)
pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
else
mempool_free( pmboxq, phba->mbox_mem_pool);
return;
}
lso->link_failure_count = pmb->un.varRdLnk.linkFailureCnt;
lso->loss_of_sync_count = pmb->un.varRdLnk.lossSyncCnt;
lso->loss_of_signal_count = pmb->un.varRdLnk.lossSignalCnt;
lso->prim_seq_protocol_err_count = pmb->un.varRdLnk.primSeqErrCnt;
lso->invalid_tx_word_count = pmb->un.varRdLnk.invalidXmitWord;
lso->invalid_crc_count = pmb->un.varRdLnk.crcCnt;
lso->error_frames = pmb->un.varRdLnk.crcCnt;
lso->link_events = (phba->fc_eventTag >> 1);
psli->stats_start = get_seconds();
return;
}
/*
* The LPFC driver treats linkdown handling as target loss events so there
@ -1431,8 +1515,7 @@ struct fc_function_template lpfc_transport_functions = {
*/
.get_fc_host_stats = lpfc_get_stats,
/* the LPFC driver doesn't support resetting stats yet */
.reset_fc_host_stats = lpfc_reset_stats,
.dd_fcrport_size = sizeof(struct lpfc_rport_data),
.show_rport_maxframe_size = 1,

1
drivers/scsi/lpfc/lpfc_crtn.h
View File

@ -127,6 +127,7 @@ void lpfc_config_port(struct lpfc_hba *, LPFC_MBOXQ_t *);
void lpfc_kill_board(struct lpfc_hba *, LPFC_MBOXQ_t *);
void lpfc_mbox_put(struct lpfc_hba *, LPFC_MBOXQ_t *);
LPFC_MBOXQ_t *lpfc_mbox_get(struct lpfc_hba *);
int lpfc_mbox_tmo_val(struct lpfc_hba *, int);
int lpfc_mem_alloc(struct lpfc_hba *);
void lpfc_mem_free(struct lpfc_hba *);

9
drivers/scsi/lpfc/lpfc_ct.c
View File

@ -131,6 +131,7 @@ lpfc_ct_unsol_event(struct lpfc_hba * phba,
}
ct_unsol_event_exit_piocbq:
list_del(&head);
if (pmbuf) {
list_for_each_entry_safe(matp, next_matp, &pmbuf->list, list) {
lpfc_mbuf_free(phba, matp->virt, matp->phys);
@ -481,7 +482,7 @@ lpfc_cmpl_ct_cmd_gid_ft(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
if (CTrsp->CommandResponse.bits.CmdRsp ==
be16_to_cpu(SLI_CT_RESPONSE_FS_ACC)) {
lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
"%d:0239 NameServer Rsp "
"%d:0208 NameServer Rsp "
"Data: x%x\n",
phba->brd_no,
phba->fc_flag);
@ -588,13 +589,9 @@ lpfc_get_hba_sym_node_name(struct lpfc_hba * phba, uint8_t * symbp)
lpfc_decode_firmware_rev(phba, fwrev, 0);
if (phba->Port[0]) {
sprintf(symbp, "Emulex %s Port %s FV%s DV%s", phba->ModelName,
phba->Port, fwrev, lpfc_release_version);
} else {
sprintf(symbp, "Emulex %s FV%s DV%s", phba->ModelName,
fwrev, lpfc_release_version);
}
return;
}
/*

15
drivers/scsi/lpfc/lpfc_els.c
View File

@ -1848,9 +1848,12 @@ static void
lpfc_cmpl_els_acc(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
struct lpfc_iocbq * rspiocb)
{
IOCB_t *irsp;
struct lpfc_nodelist *ndlp;
LPFC_MBOXQ_t *mbox = NULL;
irsp = &rspiocb->iocb;
ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
if (cmdiocb->context_un.mbox)
mbox = cmdiocb->context_un.mbox;
@ -1893,12 +1896,18 @@ lpfc_cmpl_els_acc(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
mempool_free( mbox, phba->mbox_mem_pool);
} else {
mempool_free( mbox, phba->mbox_mem_pool);
/* Do not call NO_LIST for lpfc_els_abort'ed ELS cmds */
if (!((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
((irsp->un.ulpWord[4] == IOERR_SLI_ABORTED) ||
(irsp->un.ulpWord[4] == IOERR_LINK_DOWN) ||
(irsp->un.ulpWord[4] == IOERR_SLI_DOWN)))) {
if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
ndlp = NULL;
}
}
}
}
out:
if (ndlp) {
spin_lock_irq(phba->host->host_lock);
@ -2839,7 +2848,7 @@ lpfc_els_rsp_rps_acc(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
/* Xmit ELS RPS ACC response tag <ulpIoTag> */
lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
"%d:0128 Xmit ELS RPS ACC response tag x%x "
"%d:0118 Xmit ELS RPS ACC response tag x%x "
"Data: x%x x%x x%x x%x x%x\n",
phba->brd_no,
elsiocb->iocb.ulpIoTag,
@ -2948,7 +2957,7 @@ lpfc_els_rsp_rpl_acc(struct lpfc_hba * phba, uint16_t cmdsize,
/* Xmit ELS RPL ACC response tag <ulpIoTag> */
lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
"%d:0128 Xmit ELS RPL ACC response tag x%x "
"%d:0120 Xmit ELS RPL ACC response tag x%x "
"Data: x%x x%x x%x x%x x%x\n",
phba->brd_no,
elsiocb->iocb.ulpIoTag,
@ -3109,7 +3118,7 @@ lpfc_els_rcv_fan(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
struct lpfc_nodelist *ndlp, *next_ndlp;
/* FAN received */
lpfc_printf_log(phba, KERN_INFO, LOG_ELS, "%d:265 FAN received\n",
lpfc_printf_log(phba, KERN_INFO, LOG_ELS, "%d:0265 FAN received\n",
phba->brd_no);
icmd = &cmdiocb->iocb;

15
drivers/scsi/lpfc/lpfc_hbadisc.c
View File

@ -1557,6 +1557,8 @@ lpfc_freenode(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp)
mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
}
}
spin_lock_irq(phba->host->host_lock);
list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
(ndlp == (struct lpfc_nodelist *) mb->context2)) {
@ -1569,6 +1571,7 @@ lpfc_freenode(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp)
mempool_free(mb, phba->mbox_mem_pool);
}
}
spin_unlock_irq(phba->host->host_lock);
lpfc_els_abort(phba,ndlp,0);
spin_lock_irq(phba->host->host_lock);
@ -1782,7 +1785,7 @@ lpfc_findnode_did(struct lpfc_hba * phba, uint32_t order, uint32_t did)
/* LOG change to REGLOGIN */
/* FIND node DID reglogin */
lpfc_printf_log(phba, KERN_INFO, LOG_NODE,
"%d:0931 FIND node DID reglogin"
"%d:0901 FIND node DID reglogin"
" Data: x%p x%x x%x x%x\n",
phba->brd_no,
ndlp, ndlp->nlp_DID,
@ -1805,7 +1808,7 @@ lpfc_findnode_did(struct lpfc_hba * phba, uint32_t order, uint32_t did)
/* LOG change to PRLI */
/* FIND node DID prli */
lpfc_printf_log(phba, KERN_INFO, LOG_NODE,
"%d:0931 FIND node DID prli "
"%d:0902 FIND node DID prli "
"Data: x%p x%x x%x x%x\n",
phba->brd_no,
ndlp, ndlp->nlp_DID,
@ -1828,7 +1831,7 @@ lpfc_findnode_did(struct lpfc_hba * phba, uint32_t order, uint32_t did)
/* LOG change to NPR */
/* FIND node DID npr */
lpfc_printf_log(phba, KERN_INFO, LOG_NODE,
"%d:0931 FIND node DID npr "
"%d:0903 FIND node DID npr "
"Data: x%p x%x x%x x%x\n",
phba->brd_no,
ndlp, ndlp->nlp_DID,
@ -1851,7 +1854,7 @@ lpfc_findnode_did(struct lpfc_hba * phba, uint32_t order, uint32_t did)
/* LOG change to UNUSED */
/* FIND node DID unused */
lpfc_printf_log(phba, KERN_INFO, LOG_NODE,
"%d:0931 FIND node DID unused "
"%d:0905 FIND node DID unused "
"Data: x%p x%x x%x x%x\n",
phba->brd_no,
ndlp, ndlp->nlp_DID,
@ -2335,7 +2338,7 @@ lpfc_disc_timeout_handler(struct lpfc_hba *phba)
initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!initlinkmbox) {
lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
"%d:0226 Device Discovery "
"%d:0206 Device Discovery "
"completion error\n",
phba->brd_no);
phba->hba_state = LPFC_HBA_ERROR;
@ -2365,7 +2368,7 @@ lpfc_disc_timeout_handler(struct lpfc_hba *phba)
if (!clearlambox) {
clrlaerr = 1;
lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
"%d:0226 Device Discovery "
"%d:0207 Device Discovery "
"completion error\n",
phba->brd_no);
phba->hba_state = LPFC_HBA_ERROR;

13
drivers/scsi/lpfc/lpfc_init.c
View File

@ -1379,6 +1379,7 @@ lpfc_offline(struct lpfc_hba * phba)
/* stop all timers associated with this hba */
lpfc_stop_timer(phba);
phba->work_hba_events = 0;
phba->work_ha = 0;
lpfc_printf_log(phba,
KERN_WARNING,
@ -1616,7 +1617,11 @@ lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
goto out_free_iocbq;
}
/* We can rely on a queue depth attribute only after SLI HBA setup */
/*
* Set initial can_queue value since 0 is no longer supported and
* scsi_add_host will fail. This will be adjusted later based on the
* max xri value determined in hba setup.
*/
host->can_queue = phba->cfg_hba_queue_depth - 10;
/* Tell the midlayer we support 16 byte commands */
@ -1656,6 +1661,12 @@ lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
goto out_free_irq;
}
/*
* hba setup may have changed the hba_queue_depth so we need to adjust
* the value of can_queue.
*/
host->can_queue = phba->cfg_hba_queue_depth - 10;
lpfc_discovery_wait(phba);
if (phba->cfg_poll & DISABLE_FCP_RING_INT) {

16
drivers/scsi/lpfc/lpfc_mbox.c
View File

@ -651,3 +651,19 @@ lpfc_mbox_get(struct lpfc_hba * phba)
return mbq;
}
int
lpfc_mbox_tmo_val(struct lpfc_hba *phba, int cmd)
{
switch (cmd) {
case MBX_WRITE_NV: /* 0x03 */
case MBX_UPDATE_CFG: /* 0x1B */
case MBX_DOWN_LOAD: /* 0x1C */
case MBX_DEL_LD_ENTRY: /* 0x1D */
case MBX_LOAD_AREA: /* 0x81 */
case MBX_FLASH_WR_ULA: /* 0x98 */
case MBX_LOAD_EXP_ROM: /* 0x9C */
return LPFC_MBOX_TMO_FLASH_CMD;
}
return LPFC_MBOX_TMO;
}

24
drivers/scsi/lpfc/lpfc_nportdisc.c
View File

@ -179,7 +179,7 @@ lpfc_els_abort(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
/* Abort outstanding I/O on NPort <nlp_DID> */
lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
"%d:0201 Abort outstanding I/O on NPort x%x "
"%d:0205 Abort outstanding I/O on NPort x%x "
"Data: x%x x%x x%x\n",
phba->brd_no, ndlp->nlp_DID, ndlp->nlp_flag,
ndlp->nlp_state, ndlp->nlp_rpi);
@ -393,6 +393,20 @@ lpfc_rcv_plogi(struct lpfc_hba * phba,
mbox->context2 = ndlp;
ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
/*
* If there is an outstanding PLOGI issued, abort it before
* sending ACC rsp for received PLOGI. If pending plogi
* is not canceled here, the plogi will be rejected by
* remote port and will be retried. On a configuration with
* single discovery thread, this will cause a huge delay in
* discovery. Also this will cause multiple state machines
* running in parallel for this node.
*/
if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
/* software abort outstanding PLOGI */
lpfc_els_abort(phba, ndlp, 1);
}
lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox, 0);
return 1;
@ -1601,7 +1615,13 @@ lpfc_rcv_padisc_npr_node(struct lpfc_hba * phba,
lpfc_rcv_padisc(phba, ndlp, cmdiocb);
if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
/*
* Do not start discovery if discovery is about to start
* or discovery in progress for this node. Starting discovery
* here will affect the counting of discovery threads.
*/
if ((!(ndlp->nlp_flag & NLP_DELAY_TMO)) &&
(ndlp->nlp_flag & NLP_NPR_2B_DISC)){
if (ndlp->nlp_flag & NLP_NPR_ADISC) {
ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
ndlp->nlp_state = NLP_STE_ADISC_ISSUE;

21
drivers/scsi/lpfc/lpfc_scsi.c
View File

@ -21,6 +21,7 @@
#include <linux/pci.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <scsi/scsi.h>
#include <scsi/scsi_device.h>
@ -841,6 +842,21 @@ lpfc_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
return 0;
}
static void
lpfc_block_error_handler(struct scsi_cmnd *cmnd)
{
struct Scsi_Host *shost = cmnd->device->host;
struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
spin_lock_irq(shost->host_lock);
while (rport->port_state == FC_PORTSTATE_BLOCKED) {
spin_unlock_irq(shost->host_lock);
msleep(1000);
spin_lock_irq(shost->host_lock);
}
spin_unlock_irq(shost->host_lock);
return;
}
static int
lpfc_abort_handler(struct scsi_cmnd *cmnd)
@ -855,6 +871,7 @@ lpfc_abort_handler(struct scsi_cmnd *cmnd)
unsigned int loop_count = 0;
int ret = SUCCESS;
lpfc_block_error_handler(cmnd);
spin_lock_irq(shost->host_lock);
lpfc_cmd = (struct lpfc_scsi_buf *)cmnd->host_scribble;
@ -957,6 +974,7 @@ lpfc_reset_lun_handler(struct scsi_cmnd *cmnd)
int ret = FAILED;
int cnt, loopcnt;
lpfc_block_error_handler(cmnd);
spin_lock_irq(shost->host_lock);
/*
* If target is not in a MAPPED state, delay the reset until
@ -1073,6 +1091,7 @@ lpfc_reset_bus_handler(struct scsi_cmnd *cmnd)
int cnt, loopcnt;
struct lpfc_scsi_buf * lpfc_cmd;
lpfc_block_error_handler(cmnd);
spin_lock_irq(shost->host_lock);
lpfc_cmd = lpfc_get_scsi_buf(phba);
@ -1104,7 +1123,7 @@ lpfc_reset_bus_handler(struct scsi_cmnd *cmnd)
ndlp->rport->dd_data);
if (ret != SUCCESS) {
lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
"%d:0713 Bus Reset on target %d failed\n",
"%d:0700 Bus Reset on target %d failed\n",
phba->brd_no, i);
err_count++;
}

53
drivers/scsi/lpfc/lpfc_sli.c
View File

@ -320,7 +320,8 @@ lpfc_sli_next_iotag(struct lpfc_hba * phba, struct lpfc_iocbq * iocbq)
kfree(old_arr);
return iotag;
}
}
} else
spin_unlock_irq(phba->host->host_lock);
lpfc_printf_log(phba, KERN_ERR,LOG_SLI,
"%d:0318 Failed to allocate IOTAG.last IOTAG is %d\n",
@ -969,8 +970,10 @@ void lpfc_sli_poll_fcp_ring(struct lpfc_hba * phba)
* resources need to be recovered.
*/
if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) {
printk(KERN_INFO "%s: IOCB cmd 0x%x processed."
" Skipping completion\n", __FUNCTION__,
lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
"%d:0314 IOCB cmd 0x%x"
" processed. Skipping"
" completion", phba->brd_no,
irsp->ulpCommand);
break;
}
@ -1104,7 +1107,7 @@ lpfc_sli_handle_fast_ring_event(struct lpfc_hba * phba,
if (unlikely(irsp->ulpStatus)) {
/* Rsp ring <ringno> error: IOCB */
lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
"%d:0326 Rsp Ring %d error: IOCB Data: "
"%d:0336 Rsp Ring %d error: IOCB Data: "
"x%x x%x x%x x%x x%x x%x x%x x%x\n",
phba->brd_no, pring->ringno,
irsp->un.ulpWord[0], irsp->un.ulpWord[1],
@ -1122,8 +1125,10 @@ lpfc_sli_handle_fast_ring_event(struct lpfc_hba * phba,
* resources need to be recovered.
*/
if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) {
printk(KERN_INFO "%s: IOCB cmd 0x%x processed. "
"Skipping completion\n", __FUNCTION__,
lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
"%d:0333 IOCB cmd 0x%x"
" processed. Skipping"
" completion\n", phba->brd_no,
irsp->ulpCommand);
break;
}
@ -1155,7 +1160,7 @@ lpfc_sli_handle_fast_ring_event(struct lpfc_hba * phba,
} else {
/* Unknown IOCB command */
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"%d:0321 Unknown IOCB command "
"%d:0334 Unknown IOCB command "
"Data: x%x, x%x x%x x%x x%x\n",
phba->brd_no, type, irsp->ulpCommand,
irsp->ulpStatus, irsp->ulpIoTag,
@ -1238,7 +1243,7 @@ lpfc_sli_handle_slow_ring_event(struct lpfc_hba * phba,
lpfc_printf_log(phba,
KERN_ERR,
LOG_SLI,
"%d:0312 Ring %d handler: portRspPut %d "
"%d:0303 Ring %d handler: portRspPut %d "
"is bigger then rsp ring %d\n",
phba->brd_no,
pring->ringno, portRspPut, portRspMax);
@ -1383,7 +1388,7 @@ lpfc_sli_handle_slow_ring_event(struct lpfc_hba * phba,
lpfc_printf_log(phba,
KERN_ERR,
LOG_SLI,
"%d:0321 Unknown IOCB command "
"%d:0335 Unknown IOCB command "
"Data: x%x x%x x%x x%x\n",
phba->brd_no,
irsp->ulpCommand,
@ -1399,11 +1404,11 @@ lpfc_sli_handle_slow_ring_event(struct lpfc_hba * phba,
next_iocb,
&saveq->list,
list) {
list_del(&rspiocbp->list);
lpfc_sli_release_iocbq(phba,
rspiocbp);
}
}
lpfc_sli_release_iocbq(phba, saveq);
}
}
@ -1711,15 +1716,13 @@ lpfc_sli_brdreset(struct lpfc_hba * phba)
phba->fc_myDID = 0;
phba->fc_prevDID = 0;
psli->sli_flag = 0;
/* Turn off parity checking and serr during the physical reset */
pci_read_config_word(phba->pcidev, PCI_COMMAND, &cfg_value);
pci_write_config_word(phba->pcidev, PCI_COMMAND,
(cfg_value &
~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR)));
psli->sli_flag &= ~LPFC_SLI2_ACTIVE;
psli->sli_flag &= ~(LPFC_SLI2_ACTIVE | LPFC_PROCESS_LA);
/* Now toggle INITFF bit in the Host Control Register */
writel(HC_INITFF, phba->HCregaddr);
mdelay(1);
@ -1760,7 +1763,7 @@ lpfc_sli_brdrestart(struct lpfc_hba * phba)
/* Restart HBA */
lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
"%d:0328 Restart HBA Data: x%x x%x\n", phba->brd_no,
"%d:0337 Restart HBA Data: x%x x%x\n", phba->brd_no,
phba->hba_state, psli->sli_flag);
word0 = 0;
@ -1792,6 +1795,9 @@ lpfc_sli_brdrestart(struct lpfc_hba * phba)
spin_unlock_irq(phba->host->host_lock);
memset(&psli->lnk_stat_offsets, 0, sizeof(psli->lnk_stat_offsets));
psli->stats_start = get_seconds();
if (skip_post)
mdelay(100);
else
@ -1902,6 +1908,9 @@ lpfc_sli_hba_setup(struct lpfc_hba * phba)
}
while (resetcount < 2 && !done) {
spin_lock_irq(phba->host->host_lock);
phba->sli.sli_flag |= LPFC_SLI_MBOX_ACTIVE;
spin_unlock_irq(phba->host->host_lock);
phba->hba_state = LPFC_STATE_UNKNOWN;
lpfc_sli_brdrestart(phba);
msleep(2500);
@ -1909,6 +1918,9 @@ lpfc_sli_hba_setup(struct lpfc_hba * phba)
if (rc)
break;
spin_lock_irq(phba->host->host_lock);
phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
spin_unlock_irq(phba->host->host_lock);
resetcount++;
/* Call pre CONFIG_PORT mailbox command initialization. A value of 0
@ -2194,7 +2206,8 @@ lpfc_sli_issue_mbox(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmbox, uint32_t flag)
return (MBX_NOT_FINISHED);
}
/* timeout active mbox command */
mod_timer(&psli->mbox_tmo, jiffies + HZ * LPFC_MBOX_TMO);
mod_timer(&psli->mbox_tmo, (jiffies +
(HZ * lpfc_mbox_tmo_val(phba, mb->mbxCommand))));
}
/* Mailbox cmd <cmd> issue */
@ -2254,7 +2267,6 @@ lpfc_sli_issue_mbox(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmbox, uint32_t flag)
break;
case MBX_POLL:
i = 0;
psli->mbox_active = NULL;
if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
/* First read mbox status word */
@ -2268,11 +2280,14 @@ lpfc_sli_issue_mbox(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmbox, uint32_t flag)
/* Read the HBA Host Attention Register */
ha_copy = readl(phba->HAregaddr);
i = lpfc_mbox_tmo_val(phba, mb->mbxCommand);
i *= 1000; /* Convert to ms */
/* Wait for command to complete */
while (((word0 & OWN_CHIP) == OWN_CHIP) ||
(!(ha_copy & HA_MBATT) &&
(phba->hba_state > LPFC_WARM_START))) {
if (i++ >= 100) {
if (i-- <= 0) {
psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
spin_unlock_irqrestore(phba->host->host_lock,
drvr_flag);
@ -2290,7 +2305,7 @@ lpfc_sli_issue_mbox(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmbox, uint32_t flag)
/* Can be in interrupt context, do not sleep */
/* (or might be called with interrupts disabled) */
mdelay(i);
mdelay(1);
spin_lock_irqsave(phba->host->host_lock, drvr_flag);
@ -3005,7 +3020,7 @@ lpfc_sli_issue_iocb_wait(struct lpfc_hba * phba,
if (timeleft == 0) {
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"%d:0329 IOCB wait timeout error - no "
"%d:0338 IOCB wait timeout error - no "
"wake response Data x%x\n",
phba->brd_no, timeout);
retval = IOCB_TIMEDOUT;

20
drivers/scsi/lpfc/lpfc_sli.h
View File

@ -172,6 +172,18 @@ struct lpfc_sli_stat {
uint32_t mbox_busy; /* Mailbox cmd busy */
};
/* Structure to store link status values when port stats are reset */
struct lpfc_lnk_stat {
uint32_t link_failure_count;
uint32_t loss_of_sync_count;
uint32_t loss_of_signal_count;
uint32_t prim_seq_protocol_err_count;
uint32_t invalid_tx_word_count;
uint32_t invalid_crc_count;
uint32_t error_frames;
uint32_t link_events;
};
/* Structure used to hold SLI information */
struct lpfc_sli {
uint32_t num_rings;
@ -201,6 +213,8 @@ struct lpfc_sli {
struct lpfc_iocbq ** iocbq_lookup; /* array to lookup IOCB by IOTAG */
size_t iocbq_lookup_len; /* current lengs of the array */
uint16_t last_iotag; /* last allocated IOTAG */
unsigned long stats_start; /* in seconds */
struct lpfc_lnk_stat lnk_stat_offsets;
};
/* Given a pointer to the start of the ring, and the slot number of
@ -211,3 +225,9 @@ struct lpfc_sli {
#define LPFC_MBOX_TMO 30 /* Sec tmo for outstanding mbox
command */
#define LPFC_MBOX_TMO_FLASH_CMD 300 /* Sec tmo for outstanding FLASH write
* or erase cmds. This is especially
* long because of the potential of
* multiple flash erases that can be
* spawned.
*/

2
drivers/scsi/lpfc/lpfc_version.h
View File

@ -18,7 +18,7 @@
* included with this package. *
*******************************************************************/
#define LPFC_DRIVER_VERSION "8.1.7"
#define LPFC_DRIVER_VERSION "8.1.9"
#define LPFC_DRIVER_NAME "lpfc"

6
drivers/scsi/megaraid/mega_common.h
View File

@ -37,6 +37,12 @@
#define LSI_MAX_CHANNELS 16
#define LSI_MAX_LOGICAL_DRIVES_64LD (64+1)
#define HBA_SIGNATURE_64_BIT 0x299
#define PCI_CONF_AMISIG64 0xa4
#define MEGA_SCSI_INQ_EVPD 1
#define MEGA_INVALID_FIELD_IN_CDB 0x24
/**
* scb_t - scsi command control block

4
drivers/scsi/megaraid/megaraid_ioctl.h
View File

@ -132,6 +132,10 @@ typedef struct uioc {
/* Driver Data: */
void __user * user_data;
uint32_t user_data_len;
/* 64bit alignment */
uint32_t pad_for_64bit_align;
mraid_passthru_t __user *user_pthru;
mraid_passthru_t *pthru32;

36
drivers/scsi/megaraid/megaraid_mbox.c
View File

@ -10,7 +10,7 @@
* 2 of the License, or (at your option) any later version.
*
* FILE : megaraid_mbox.c
* Version : v2.20.4.8 (Apr 11 2006)
* Version : v2.20.4.9 (Jul 16 2006)
*
* Authors:
* Atul Mukker <Atul.Mukker@lsil.com>
@ -720,6 +720,7 @@ megaraid_init_mbox(adapter_t *adapter)
struct pci_dev *pdev;
mraid_device_t *raid_dev;
int i;
uint32_t magic64;
adapter->ito = MBOX_TIMEOUT;
@ -863,13 +864,34 @@ megaraid_init_mbox(adapter_t *adapter)
// Set the DMA mask to 64-bit. All supported controllers as capable of
// DMA in this range
if (pci_set_dma_mask(adapter->pdev, DMA_64BIT_MASK) != 0) {
pci_read_config_dword(adapter->pdev, PCI_CONF_AMISIG64, &magic64);
if (((magic64 == HBA_SIGNATURE_64_BIT) &&
((adapter->pdev->subsystem_device !=
PCI_SUBSYS_ID_MEGARAID_SATA_150_6) ||
(adapter->pdev->subsystem_device !=
PCI_SUBSYS_ID_MEGARAID_SATA_150_4))) ||
(adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC &&
adapter->pdev->device == PCI_DEVICE_ID_VERDE) ||
(adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC &&
adapter->pdev->device == PCI_DEVICE_ID_DOBSON) ||
(adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC &&
adapter->pdev->device == PCI_DEVICE_ID_LINDSAY) ||
(adapter->pdev->vendor == PCI_VENDOR_ID_DELL &&
adapter->pdev->device == PCI_DEVICE_ID_PERC4_DI_EVERGLADES) ||
(adapter->pdev->vendor == PCI_VENDOR_ID_DELL &&
adapter->pdev->device == PCI_DEVICE_ID_PERC4E_DI_KOBUK)) {
if (pci_set_dma_mask(adapter->pdev, DMA_64BIT_MASK)) {
con_log(CL_ANN, (KERN_WARNING
"megaraid: could not set DMA mask for 64-bit.\n"));
"megaraid: DMA mask for 64-bit failed\n"));
if (pci_set_dma_mask (adapter->pdev, DMA_32BIT_MASK)) {
con_log(CL_ANN, (KERN_WARNING
"megaraid: 32-bit DMA mask failed\n"));
goto out_free_sysfs_res;
}
}
}
// setup tasklet for DPC
tasklet_init(&adapter->dpc_h, megaraid_mbox_dpc,
@ -1622,6 +1644,14 @@ megaraid_mbox_build_cmd(adapter_t *adapter, struct scsi_cmnd *scp, int *busy)
rdev->last_disp |= (1L << SCP2CHANNEL(scp));
}
if (scp->cmnd[1] & MEGA_SCSI_INQ_EVPD) {
scp->sense_buffer[0] = 0x70;
scp->sense_buffer[2] = ILLEGAL_REQUEST;
scp->sense_buffer[12] = MEGA_INVALID_FIELD_IN_CDB;
scp->result = CHECK_CONDITION << 1;
return NULL;
}
/* Fall through */
case READ_CAPACITY:

4
drivers/scsi/megaraid/megaraid_mbox.h
View File

@ -21,8 +21,8 @@
#include "megaraid_ioctl.h"
#define MEGARAID_VERSION "2.20.4.8"
#define MEGARAID_EXT_VERSION "(Release Date: Mon Apr 11 12:27:22 EST 2006)"
#define MEGARAID_VERSION "2.20.4.9"
#define MEGARAID_EXT_VERSION "(Release Date: Sun Jul 16 12:27:22 EST 2006)"
/*

2
drivers/scsi/megaraid/megaraid_mm.c
View File

@ -10,7 +10,7 @@
* 2 of the License, or (at your option) any later version.
*
* FILE : megaraid_mm.c
* Version : v2.20.2.6 (Mar 7 2005)
* Version : v2.20.2.7 (Jul 16 2006)
*
* Common management module
*/

4
drivers/scsi/megaraid/megaraid_mm.h
View File

@ -27,9 +27,9 @@
#include "megaraid_ioctl.h"
#define LSI_COMMON_MOD_VERSION "2.20.2.6"
#define LSI_COMMON_MOD_VERSION "2.20.2.7"
#define LSI_COMMON_MOD_EXT_VERSION \
"(Release Date: Mon Mar 7 00:01:03 EST 2005)"
"(Release Date: Sun Jul 16 00:01:03 EST 2006)"
#define LSI_DBGLVL dbglevel

1
drivers/scsi/qla2xxx/qla_def.h
View File

@ -487,6 +487,7 @@ typedef struct {
#define MBA_IP_RCV_BUFFER_EMPTY 0x8026 /* IP receive buffer queue empty. */
#define MBA_IP_HDR_DATA_SPLIT 0x8027 /* IP header/data splitting feature */
/* used. */
#define MBA_TRACE_NOTIFICATION 0x8028 /* Trace/Diagnostic notification. */
#define MBA_POINT_TO_POINT 0x8030 /* Point to point mode. */
#define MBA_CMPLT_1_16BIT 0x8031 /* Completion 1 16bit IOSB. */
#define MBA_CMPLT_2_16BIT 0x8032 /* Completion 2 16bit IOSB. */

11
drivers/scsi/qla2xxx/qla_init.c
View File

@ -3063,6 +3063,7 @@ qla2x00_update_fcports(scsi_qla_host_t *ha)
int
qla2x00_abort_isp(scsi_qla_host_t *ha)
{
int rval;
unsigned long flags = 0;
uint16_t cnt;
srb_t *sp;
@ -3119,6 +3120,16 @@ qla2x00_abort_isp(scsi_qla_host_t *ha)
ha->isp_abort_cnt = 0;
clear_bit(ISP_ABORT_RETRY, &ha->dpc_flags);
if (ha->eft) {
rval = qla2x00_trace_control(ha, TC_ENABLE,
ha->eft_dma, EFT_NUM_BUFFERS);
if (rval) {
qla_printk(KERN_WARNING, ha,
"Unable to reinitialize EFT "
"(%d).\n", rval);
}
}
} else { /* failed the ISP abort */
ha->flags.online = 1;
if (test_bit(ISP_ABORT_RETRY, &ha->dpc_flags)) {

1
drivers/scsi/qla2xxx/qla_iocb.c
View File

@ -471,6 +471,7 @@ __qla2x00_marker(scsi_qla_host_t *ha, uint16_t loop_id, uint16_t lun,
mrk24->nport_handle = cpu_to_le16(loop_id);
mrk24->lun[1] = LSB(lun);
mrk24->lun[2] = MSB(lun);
host_to_fcp_swap(mrk24->lun, sizeof(mrk24->lun));
} else {
SET_TARGET_ID(ha, mrk->target, loop_id);
mrk->lun = cpu_to_le16(lun);

5
drivers/scsi/qla2xxx/qla_isr.c
View File

@ -587,6 +587,11 @@ qla2x00_async_event(scsi_qla_host_t *ha, uint16_t *mb)
DEBUG2(printk("scsi(%ld): Discard RND Frame -- %04x %04x "
"%04x.\n", ha->host_no, mb[1], mb[2], mb[3]));
break;
case MBA_TRACE_NOTIFICATION:
DEBUG2(printk("scsi(%ld): Trace Notification -- %04x %04x.\n",
ha->host_no, mb[1], mb[2]));
break;
}
}

15
drivers/scsi/qla2xxx/qla_os.c
View File

@ -744,7 +744,6 @@ qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
{
scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
srb_t *sp;
int ret;
unsigned int id, lun;
unsigned long serial;
@ -755,8 +754,7 @@ qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
lun = cmd->device->lun;
serial = cmd->serial_number;
sp = (srb_t *) CMD_SP(cmd);
if (!sp || !fcport)
if (!fcport)
return ret;
qla_printk(KERN_INFO, ha,
@ -875,7 +873,6 @@ qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
{
scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
srb_t *sp;
int ret;
unsigned int id, lun;
unsigned long serial;
@ -886,8 +883,7 @@ qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
lun = cmd->device->lun;
serial = cmd->serial_number;
sp = (srb_t *) CMD_SP(cmd);
if (!sp || !fcport)
if (!fcport)
return ret;
qla_printk(KERN_INFO, ha,
@ -936,7 +932,6 @@ qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
{
scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
srb_t *sp;
int ret;
unsigned int id, lun;
unsigned long serial;
@ -947,8 +942,7 @@ qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
lun = cmd->device->lun;
serial = cmd->serial_number;
sp = (srb_t *) CMD_SP(cmd);
if (!sp || !fcport)
if (!fcport)
return ret;
qla_printk(KERN_INFO, ha,
@ -2244,9 +2238,6 @@ qla2x00_do_dpc(void *data)
next_loopid = 0;
list_for_each_entry(fcport, &ha->fcports, list) {
if (fcport->port_type != FCT_TARGET)
continue;
/*
* If the port is not ONLINE then try to login
* to it if we haven't run out of retries.

4
drivers/scsi/qla2xxx/qla_version.h
View File

@ -7,9 +7,9 @@
/*
* Driver version
*/
#define QLA2XXX_VERSION "8.01.05-k3"
#define QLA2XXX_VERSION "8.01.07-k1"
#define QLA_DRIVER_MAJOR_VER 8
#define QLA_DRIVER_MINOR_VER 1
#define QLA_DRIVER_PATCH_VER 5
#define QLA_DRIVER_PATCH_VER 7
#define QLA_DRIVER_BETA_VER 0

18
drivers/scsi/scsi_error.c
View File

@ -460,7 +460,8 @@ static void scsi_eh_done(struct scsi_cmnd *scmd)
* Return value:
* SUCCESS or FAILED or NEEDS_RETRY
**/
static int scsi_send_eh_cmnd(struct scsi_cmnd *scmd, int timeout, int copy_sense)
static int scsi_send_eh_cmnd(struct scsi_cmnd *scmd, unsigned char *cmnd,
int cmnd_size, int timeout, int copy_sense)
{
struct scsi_device *sdev = scmd->device;
struct Scsi_Host *shost = sdev->host;
@ -490,6 +491,9 @@ static int scsi_send_eh_cmnd(struct scsi_cmnd *scmd, int timeout, int copy_sense
old_cmd_len = scmd->cmd_len;
old_use_sg = scmd->use_sg;
memset(scmd->cmnd, 0, sizeof(scmd->cmnd));
memcpy(scmd->cmnd, cmnd, cmnd_size);
if (copy_sense) {
int gfp_mask = GFP_ATOMIC;
@ -610,8 +614,7 @@ static int scsi_request_sense(struct scsi_cmnd *scmd)
static unsigned char generic_sense[6] =
{REQUEST_SENSE, 0, 0, 0, 252, 0};
memcpy(scmd->cmnd, generic_sense, sizeof(generic_sense));
return scsi_send_eh_cmnd(scmd, SENSE_TIMEOUT, 1);
return scsi_send_eh_cmnd(scmd, generic_sense, 6, SENSE_TIMEOUT, 1);
}
/**
@ -736,10 +739,7 @@ static int scsi_eh_tur(struct scsi_cmnd *scmd)
int retry_cnt = 1, rtn;
retry_tur:
memcpy(scmd->cmnd, tur_command, sizeof(tur_command));
rtn = scsi_send_eh_cmnd(scmd, SENSE_TIMEOUT, 0);
rtn = scsi_send_eh_cmnd(scmd, tur_command, 6, SENSE_TIMEOUT, 0);
SCSI_LOG_ERROR_RECOVERY(3, printk("%s: scmd %p rtn %x\n",
__FUNCTION__, scmd, rtn));
@ -839,8 +839,8 @@ static int scsi_eh_try_stu(struct scsi_cmnd *scmd)
if (scmd->device->allow_restart) {
int rtn;
memcpy(scmd->cmnd, stu_command, sizeof(stu_command));
rtn = scsi_send_eh_cmnd(scmd, START_UNIT_TIMEOUT, 0);
rtn = scsi_send_eh_cmnd(scmd, stu_command, 6,
START_UNIT_TIMEOUT, 0);
if (rtn == SUCCESS)
return 0;
}

15
drivers/scsi/scsi_transport_iscsi.c
View File

@ -34,6 +34,7 @@
#define ISCSI_SESSION_ATTRS 11
#define ISCSI_CONN_ATTRS 11
#define ISCSI_HOST_ATTRS 0
#define ISCSI_TRANSPORT_VERSION "1.1-646"
struct iscsi_internal {
int daemon_pid;
@ -634,13 +635,13 @@ mempool_zone_get_skb(struct mempool_zone *zone)
}
static int
iscsi_broadcast_skb(struct mempool_zone *zone, struct sk_buff *skb)
iscsi_broadcast_skb(struct mempool_zone *zone, struct sk_buff *skb, gfp_t gfp)
{
unsigned long flags;
int rc;
skb_get(skb);
rc = netlink_broadcast(nls, skb, 0, 1, GFP_KERNEL);
rc = netlink_broadcast(nls, skb, 0, 1, gfp);
if (rc < 0) {
mempool_free(skb, zone->pool);
printk(KERN_ERR "iscsi: can not broadcast skb (%d)\n", rc);
@ -749,7 +750,7 @@ void iscsi_conn_error(struct iscsi_cls_conn *conn, enum iscsi_err error)
ev->r.connerror.cid = conn->cid;
ev->r.connerror.sid = iscsi_conn_get_sid(conn);
iscsi_broadcast_skb(conn->z_error, skb);
iscsi_broadcast_skb(conn->z_error, skb, GFP_ATOMIC);
dev_printk(KERN_INFO, &conn->dev, "iscsi: detected conn error (%d)\n",
error);
@ -895,7 +896,7 @@ int iscsi_if_destroy_session_done(struct iscsi_cls_conn *conn)
* this will occur if the daemon is not up, so we just warn
* the user and when the daemon is restarted it will handle it
*/
rc = iscsi_broadcast_skb(conn->z_pdu, skb);
rc = iscsi_broadcast_skb(conn->z_pdu, skb, GFP_KERNEL);
if (rc < 0)
dev_printk(KERN_ERR, &conn->dev, "Cannot notify userspace of "
"session destruction event. Check iscsi daemon\n");
@ -958,7 +959,7 @@ int iscsi_if_create_session_done(struct iscsi_cls_conn *conn)
* this will occur if the daemon is not up, so we just warn
* the user and when the daemon is restarted it will handle it
*/
rc = iscsi_broadcast_skb(conn->z_pdu, skb);
rc = iscsi_broadcast_skb(conn->z_pdu, skb, GFP_KERNEL);
if (rc < 0)
dev_printk(KERN_ERR, &conn->dev, "Cannot notify userspace of "
"session creation event. Check iscsi daemon\n");
@ -1613,6 +1614,9 @@ static __init int iscsi_transport_init(void)
{
int err;
printk(KERN_INFO "Loading iSCSI transport class v%s.",
ISCSI_TRANSPORT_VERSION);
err = class_register(&iscsi_transport_class);
if (err)
return err;
@ -1678,3 +1682,4 @@ MODULE_AUTHOR("Mike Christie <michaelc@cs.wisc.edu>, "
"Alex Aizman <itn780@yahoo.com>");
MODULE_DESCRIPTION("iSCSI Transport Interface");
MODULE_LICENSE("GPL");
MODULE_VERSION(ISCSI_TRANSPORT_VERSION);

8
drivers/scsi/sg.c
View File

@ -18,8 +18,8 @@
*
*/
static int sg_version_num = 30533; /* 2 digits for each component */
#define SG_VERSION_STR "3.5.33"
static int sg_version_num = 30534; /* 2 digits for each component */
#define SG_VERSION_STR "3.5.34"
/*
* D. P. Gilbert (dgilbert@interlog.com, dougg@triode.net.au), notes:
@ -60,7 +60,7 @@ static int sg_version_num = 30533; /* 2 digits for each component */
#ifdef CONFIG_SCSI_PROC_FS
#include <linux/proc_fs.h>
static char *sg_version_date = "20050908";
static char *sg_version_date = "20060818";
static int sg_proc_init(void);
static void sg_proc_cleanup(void);
@ -1164,7 +1164,7 @@ sg_vma_nopage(struct vm_area_struct *vma, unsigned long addr, int *type)
len = vma->vm_end - sa;
len = (len < sg->length) ? len : sg->length;
if (offset < len) {
page = sg->page;
page = virt_to_page(page_address(sg->page) + offset);
get_page(page); /* increment page count */
break;
}

2
drivers/scsi/sym53c8xx_2/sym_glue.c
View File

@ -2084,7 +2084,7 @@ static struct pci_device_id sym2_id_table[] __devinitdata = {
{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C860,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1510,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_SCSI<<8, 0xffff00, 0UL },
{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C896,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C895,

19
include/scsi/libiscsi.h
View File

@ -60,6 +60,7 @@ struct iscsi_nopin;
#define TMABORT_SUCCESS 0x1
#define TMABORT_FAILED 0x2
#define TMABORT_TIMEDOUT 0x3
#define TMABORT_NOT_FOUND 0x4
/* Connection suspend "bit" */
#define ISCSI_SUSPEND_BIT 1
@ -83,6 +84,12 @@ struct iscsi_mgmt_task {
struct list_head running;
};
enum {
ISCSI_TASK_COMPLETED,
ISCSI_TASK_PENDING,
ISCSI_TASK_RUNNING,
};
struct iscsi_cmd_task {
/*
* Becuae LLDs allocate their hdr differently, this is a pointer to
@ -101,6 +108,8 @@ struct iscsi_cmd_task {
struct iscsi_conn *conn; /* used connection */
struct iscsi_mgmt_task *mtask; /* tmf mtask in progr */
/* state set/tested under session->lock */
int state;
struct list_head running; /* running cmd list */
void *dd_data; /* driver/transport data */
};
@ -126,6 +135,14 @@ struct iscsi_conn {
int id; /* CID */
struct list_head item; /* maintains list of conns */
int c_stage; /* connection state */
/*
* Preallocated buffer for pdus that have data but do not
* originate from scsi-ml. We never have two pdus using the
* buffer at the same time. It is only allocated to
* the default max recv size because the pdus we support
* should always fit in this buffer
*/
char *data;
struct iscsi_mgmt_task *login_mtask; /* mtask used for login/text */
struct iscsi_mgmt_task *mtask; /* xmit mtask in progress */
struct iscsi_cmd_task *ctask; /* xmit ctask in progress */
@ -134,7 +151,7 @@ struct iscsi_conn {
struct kfifo *immqueue; /* immediate xmit queue */
struct kfifo *mgmtqueue; /* mgmt (control) xmit queue */
struct list_head mgmt_run_list; /* list of control tasks */
struct kfifo *xmitqueue; /* data-path cmd queue */
struct list_head xmitqueue; /* data-path cmd queue */
struct list_head run_list; /* list of cmds in progress */
struct work_struct xmitwork; /* per-conn. xmit workqueue */
/*

4
include/scsi/scsi_transport_iscsi.h
View File

@ -57,8 +57,6 @@ struct sockaddr;
* @stop_conn: suspend/recover/terminate connection
* @send_pdu: send iSCSI PDU, Login, Logout, NOP-Out, Reject, Text.
* @session_recovery_timedout: notify LLD a block during recovery timed out
* @suspend_conn_recv: susepend the recv side of the connection
* @termincate_conn: destroy socket connection. Called with mutex lock.
* @init_cmd_task: Initialize a iscsi_cmd_task and any internal structs.
* Called from queuecommand with session lock held.
* @init_mgmt_task: Initialize a iscsi_mgmt_task and any internal structs.
@ -112,8 +110,6 @@ struct iscsi_transport {
char *data, uint32_t data_size);
void (*get_stats) (struct iscsi_cls_conn *conn,
struct iscsi_stats *stats);
void (*suspend_conn_recv) (struct iscsi_conn *conn);
void (*terminate_conn) (struct iscsi_conn *conn);
void (*init_cmd_task) (struct iscsi_cmd_task *ctask);
void (*init_mgmt_task) (struct iscsi_conn *conn,
struct iscsi_mgmt_task *mtask,