Release 4.7 drivers/s390/scsi/zfcp_fsf.c

Directory: drivers/s390/scsi
/*
 * zfcp device driver
 *
 * Implementation of FSF commands.
 *
 * Copyright IBM Corp. 2002, 2013
 */


#define KMSG_COMPONENT "zfcp"

#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt

#include <linux/blktrace_api.h>
#include <linux/slab.h>
#include <scsi/fc/fc_els.h>
#include "zfcp_ext.h"
#include "zfcp_fc.h"
#include "zfcp_dbf.h"
#include "zfcp_qdio.h"
#include "zfcp_reqlist.h"


struct kmem_cache *zfcp_fsf_qtcb_cache;



static void zfcp_fsf_request_timeout_handler(unsigned long data)
{
	struct zfcp_adapter *adapter = (struct zfcp_adapter *) data;
	zfcp_qdio_siosl(adapter);
	zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
				"fsrth_1");
}

Contributors
Person Tokens Prop Commits CommitProp
christof schmitt christof schmitt 35 97.22% 2 66.67%
swen schillig swen schillig 1 2.78% 1 33.33%
Total 36 100.00% 3 100.00%



static void zfcp_fsf_start_timer(struct zfcp_fsf_req *fsf_req,
				 unsigned long timeout)
{
	fsf_req->timer.function = zfcp_fsf_request_timeout_handler;
	fsf_req->timer.data = (unsigned long) fsf_req->adapter;
	fsf_req->timer.expires = jiffies + timeout;
	add_timer(&fsf_req->timer);
}

Contributors
Person Tokens Prop Commits CommitProp
christof schmitt christof schmitt 55 100.00% 1 100.00%
Total 55 100.00% 1 100.00%



static void zfcp_fsf_start_erp_timer(struct zfcp_fsf_req *fsf_req)
{
	BUG_ON(!fsf_req->erp_action);
	fsf_req->timer.function = zfcp_erp_timeout_handler;
	fsf_req->timer.data = (unsigned long) fsf_req->erp_action;
	fsf_req->timer.expires = jiffies + 30 * HZ;
	add_timer(&fsf_req->timer);
}

Contributors
Person Tokens Prop Commits CommitProp
christof schmitt christof schmitt 61 100.00% 1 100.00%
Total 61 100.00% 1 100.00%

/* association between FSF command and FSF QTCB type */

static u32 fsf_qtcb_type[] = {
	[FSF_QTCB_FCP_CMND] =             FSF_IO_COMMAND,
	[FSF_QTCB_ABORT_FCP_CMND] =       FSF_SUPPORT_COMMAND,
	[FSF_QTCB_OPEN_PORT_WITH_DID] =   FSF_SUPPORT_COMMAND,
	[FSF_QTCB_OPEN_LUN] =             FSF_SUPPORT_COMMAND,
	[FSF_QTCB_CLOSE_LUN] =            FSF_SUPPORT_COMMAND,
	[FSF_QTCB_CLOSE_PORT] =           FSF_SUPPORT_COMMAND,
	[FSF_QTCB_CLOSE_PHYSICAL_PORT] =  FSF_SUPPORT_COMMAND,
	[FSF_QTCB_SEND_ELS] =             FSF_SUPPORT_COMMAND,
	[FSF_QTCB_SEND_GENERIC] =         FSF_SUPPORT_COMMAND,
	[FSF_QTCB_EXCHANGE_CONFIG_DATA] = FSF_CONFIG_COMMAND,
	[FSF_QTCB_EXCHANGE_PORT_DATA] =   FSF_PORT_COMMAND,
	[FSF_QTCB_DOWNLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND,
	[FSF_QTCB_UPLOAD_CONTROL_FILE] =  FSF_SUPPORT_COMMAND
};



static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req *req)
{
	dev_err(&req->adapter->ccw_device->dev, "FCP device not "
		"operational because of an unsupported FC class\n");
	zfcp_erp_adapter_shutdown(req->adapter, 0, "fscns_1");
	req->status |= ZFCP_STATUS_FSFREQ_ERROR;
}

Contributors
Person Tokens Prop Commits CommitProp
christof schmitt christof schmitt 16 37.21% 2 22.22%
andrew morton andrew morton 9 20.93% 1 11.11%
swen schillig swen schillig 6 13.95% 2 22.22%
martin peschke martin peschke 6 13.95% 1 11.11%
martin schwidefsky martin schwidefsky 3 6.98% 1 11.11%
andreas herrmann andreas herrmann 2 4.65% 1 11.11%
volker sameske volker sameske 1 2.33% 1 11.11%
Total 43 100.00% 9 100.00%

/**
 * zfcp_fsf_req_free - free memory used by fsf request
 * @fsf_req: pointer to struct zfcp_fsf_req
 */


void zfcp_fsf_req_free(struct zfcp_fsf_req *req)
{
	if (likely(req->pool)) {
		if (likely(req->qtcb))
			mempool_free(req->qtcb, req->adapter->pool.qtcb_pool);
		mempool_free(req, req->pool);
		return;
	}

	if (likely(req->qtcb))
		kmem_cache_free(zfcp_fsf_qtcb_cache, req->qtcb);
	kfree(req);
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 43 55.13% 2 28.57%
christof schmitt christof schmitt 18 23.08% 2 28.57%
martin schwidefsky martin schwidefsky 11 14.10% 1 14.29%
andrew morton andrew morton 5 6.41% 1 14.29%
maxim shchetynin maxim shchetynin 1 1.28% 1 14.29%
Total 78 100.00% 7 100.00%



static void zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *req)
{
	unsigned long flags;
	struct fsf_status_read_buffer *sr_buf = req->data;
	struct zfcp_adapter *adapter = req->adapter;
	struct zfcp_port *port;
	int d_id = ntoh24(sr_buf->d_id);

	read_lock_irqsave(&adapter->port_list_lock, flags);
	list_for_each_entry(port, &adapter->port_list, list)
		if (port->d_id == d_id) {
			zfcp_erp_port_reopen(port, 0, "fssrpc1");
			break;
		}
	read_unlock_irqrestore(&adapter->port_list_lock, flags);
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 71 73.96% 3 50.00%
christof schmitt christof schmitt 21 21.88% 2 33.33%
martin schwidefsky martin schwidefsky 4 4.17% 1 16.67%
Total 96 100.00% 6 100.00%



static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *req,
					 struct fsf_link_down_info *link_down)
{
	struct zfcp_adapter *adapter = req->adapter;

	if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED)
		return;

	atomic_or(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status);

	zfcp_scsi_schedule_rports_block(adapter);

	if (!link_down)
		goto out;

	switch (link_down->error_code) {
	case FSF_PSQ_LINK_NO_LIGHT:
		dev_warn(&req->adapter->ccw_device->dev,
			 "There is no light signal from the local "
			 "fibre channel cable\n");
		break;
	case FSF_PSQ_LINK_WRAP_PLUG:
		dev_warn(&req->adapter->ccw_device->dev,
			 "There is a wrap plug instead of a fibre "
			 "channel cable\n");
		break;
	case FSF_PSQ_LINK_NO_FCP:
		dev_warn(&req->adapter->ccw_device->dev,
			 "The adjacent fibre channel node does not "
			 "support FCP\n");
		break;
	case FSF_PSQ_LINK_FIRMWARE_UPDATE:
		dev_warn(&req->adapter->ccw_device->dev,
			 "The FCP device is suspended because of a "
			 "firmware update\n");
		break;
	case FSF_PSQ_LINK_INVALID_WWPN:
		dev_warn(&req->adapter->ccw_device->dev,
			 "The FCP device detected a WWPN that is "
			 "duplicate or not valid\n");
		break;
	case FSF_PSQ_LINK_NO_NPIV_SUPPORT:
		dev_warn(&req->adapter->ccw_device->dev,
			 "The fibre channel fabric does not support NPIV\n");
		break;
	case FSF_PSQ_LINK_NO_FCP_RESOURCES:
		dev_warn(&req->adapter->ccw_device->dev,
			 "The FCP adapter cannot support more NPIV ports\n");
		break;
	case FSF_PSQ_LINK_NO_FABRIC_RESOURCES:
		dev_warn(&req->adapter->ccw_device->dev,
			 "The adjacent switch cannot support "
			 "more NPIV ports\n");
		break;
	case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE:
		dev_warn(&req->adapter->ccw_device->dev,
			 "The FCP adapter could not log in to the "
			 "fibre channel fabric\n");
		break;
	case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED:
		dev_warn(&req->adapter->ccw_device->dev,
			 "The WWPN assignment file on the FCP adapter "
			 "has been damaged\n");
		break;
	case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED:
		dev_warn(&req->adapter->ccw_device->dev,
			 "The mode table on the FCP adapter "
			 "has been damaged\n");
		break;
	case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT:
		dev_warn(&req->adapter->ccw_device->dev,
			 "All NPIV ports on the FCP adapter have "
			 "been assigned\n");
		break;
	default:
		dev_warn(&req->adapter->ccw_device->dev,
			 "The link between the FCP adapter and "
			 "the FC fabric is down\n");
	}
out:
	zfcp_erp_set_adapter_status(adapter, ZFCP_STATUS_COMMON_ERP_FAILED);
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 201 62.81% 2 25.00%
christof schmitt christof schmitt 93 29.06% 3 37.50%
martin schwidefsky martin schwidefsky 23 7.19% 1 12.50%
martin peschke martin peschke 2 0.62% 1 12.50%
peter zijlstra peter zijlstra 1 0.31% 1 12.50%
Total 320 100.00% 8 100.00%



static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req *req)
{
	struct fsf_status_read_buffer *sr_buf = req->data;
	struct fsf_link_down_info *ldi =
		(struct fsf_link_down_info *) &sr_buf->payload;

	switch (sr_buf->status_subtype) {
	case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK:
		zfcp_fsf_link_down_info_eval(req, ldi);
		break;
	case FSF_STATUS_READ_SUB_FDISC_FAILED:
		zfcp_fsf_link_down_info_eval(req, ldi);
		break;
	case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE:
		zfcp_fsf_link_down_info_eval(req, NULL);
	}
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 41 54.67% 1 25.00%
martin schwidefsky martin schwidefsky 30 40.00% 1 25.00%
martin peschke martin peschke 2 2.67% 1 25.00%
maxim shchetynin maxim shchetynin 2 2.67% 1 25.00%
Total 75 100.00% 4 100.00%



static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req)
{
	struct zfcp_adapter *adapter = req->adapter;
	struct fsf_status_read_buffer *sr_buf = req->data;

	if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
		zfcp_dbf_hba_fsf_uss("fssrh_1", req);
		mempool_free(virt_to_page(sr_buf), adapter->pool.sr_data);
		zfcp_fsf_req_free(req);
		return;
	}

	zfcp_dbf_hba_fsf_uss("fssrh_4", req);

	switch (sr_buf->status_type) {
	case FSF_STATUS_READ_PORT_CLOSED:
		zfcp_fsf_status_read_port_closed(req);
		break;
	case FSF_STATUS_READ_INCOMING_ELS:
		zfcp_fc_incoming_els(req);
		break;
	case FSF_STATUS_READ_SENSE_DATA_AVAIL:
		break;
	case FSF_STATUS_READ_BIT_ERROR_THRESHOLD:
		dev_warn(&adapter->ccw_device->dev,
			 "The error threshold for checksum statistics "
			 "has been exceeded\n");
		zfcp_dbf_hba_bit_err("fssrh_3", req);
		break;
	case FSF_STATUS_READ_LINK_DOWN:
		zfcp_fsf_status_read_link_down(req);
		zfcp_fc_enqueue_event(adapter, FCH_EVT_LINKDOWN, 0);
		break;
	case FSF_STATUS_READ_LINK_UP:
		dev_info(&adapter->ccw_device->dev,
			 "The local link has been restored\n");
		/* All ports should be marked as ready to run again */
		zfcp_erp_set_adapter_status(adapter,
					    ZFCP_STATUS_COMMON_RUNNING);
		zfcp_erp_adapter_reopen(adapter,
					ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
					ZFCP_STATUS_COMMON_ERP_FAILED,
					"fssrh_2");
		zfcp_fc_enqueue_event(adapter, FCH_EVT_LINKUP, 0);

		break;
	case FSF_STATUS_READ_NOTIFICATION_LOST:
		if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_INCOMING_ELS)
			zfcp_fc_conditional_port_scan(adapter);
		break;
	case FSF_STATUS_READ_FEATURE_UPDATE_ALERT:
		adapter->adapter_features = sr_buf->payload.word[0];
		break;
	}

	mempool_free(virt_to_page(sr_buf), adapter->pool.sr_data);
	zfcp_fsf_req_free(req);

	atomic_inc(&adapter->stat_miss);
	queue_work(adapter->work_queue, &adapter->stat_work);
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 115 43.89% 8 44.44%
maxim shchetynin maxim shchetynin 82 31.30% 2 11.11%
christof schmitt christof schmitt 32 12.21% 3 16.67%
sven schuetz sven schuetz 18 6.87% 1 5.56%
martin peschke martin peschke 9 3.44% 1 5.56%
martin schwidefsky martin schwidefsky 4 1.53% 1 5.56%
steffen maier steffen maier 2 0.76% 2 11.11%
Total 262 100.00% 18 100.00%



static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req)
{
	switch (req->qtcb->header.fsf_status_qual.word[0]) {
	case FSF_SQ_FCP_RSP_AVAILABLE:
	case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
	case FSF_SQ_NO_RETRY_POSSIBLE:
	case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
		return;
	case FSF_SQ_COMMAND_ABORTED:
		break;
	case FSF_SQ_NO_RECOM:
		dev_err(&req->adapter->ccw_device->dev,
			"The FCP adapter reported a problem "
			"that cannot be recovered\n");
		zfcp_qdio_siosl(req->adapter);
		zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfsqe1");
		break;
	}
	/* all non-return stats set FSFREQ_ERROR*/
	req->status |= ZFCP_STATUS_FSFREQ_ERROR;
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 47 52.81% 2 33.33%
martin schwidefsky martin schwidefsky 32 35.96% 1 16.67%
christof schmitt christof schmitt 9 10.11% 2 33.33%
andrew morton andrew morton 1 1.12% 1 16.67%
Total 89 100.00% 6 100.00%



static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *req)
{
	if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
		return;

	switch (req->qtcb->header.fsf_status) {
	case FSF_UNKNOWN_COMMAND:
		dev_err(&req->adapter->ccw_device->dev,
			"The FCP adapter does not recognize the command 0x%x\n",
			req->qtcb->header.fsf_command);
		zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfse_1");
		req->status |= ZFCP_STATUS_FSFREQ_ERROR;
		break;
	case FSF_ADAPTER_STATUS_AVAILABLE:
		zfcp_fsf_fsfstatus_qual_eval(req);
		break;
	}
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 66 75.86% 2 33.33%
martin schwidefsky martin schwidefsky 16 18.39% 2 33.33%
andrew morton andrew morton 4 4.60% 1 16.67%
christof schmitt christof schmitt 1 1.15% 1 16.67%
Total 87 100.00% 6 100.00%



static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req)
{
	struct zfcp_adapter *adapter = req->adapter;
	struct fsf_qtcb *qtcb = req->qtcb;
	union fsf_prot_status_qual *psq = &qtcb->prefix.prot_status_qual;

	zfcp_dbf_hba_fsf_response(req);

	if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
		req->status |= ZFCP_STATUS_FSFREQ_ERROR;
		return;
	}

	switch (qtcb->prefix.prot_status) {
	case FSF_PROT_GOOD:
	case FSF_PROT_FSF_STATUS_PRESENTED:
		return;
	case FSF_PROT_QTCB_VERSION_ERROR:
		dev_err(&adapter->ccw_device->dev,
			"QTCB version 0x%x not supported by FCP adapter "
			"(0x%x to 0x%x)\n", FSF_QTCB_CURRENT_VERSION,
			psq->word[0], psq->word[1]);
		zfcp_erp_adapter_shutdown(adapter, 0, "fspse_1");
		break;
	case FSF_PROT_ERROR_STATE:
	case FSF_PROT_SEQ_NUMB_ERROR:
		zfcp_erp_adapter_reopen(adapter, 0, "fspse_2");
		req->status |= ZFCP_STATUS_FSFREQ_ERROR;
		break;
	case FSF_PROT_UNSUPP_QTCB_TYPE:
		dev_err(&adapter->ccw_device->dev,
			"The QTCB type is not supported by the FCP adapter\n");
		zfcp_erp_adapter_shutdown(adapter, 0, "fspse_3");
		break;
	case FSF_PROT_HOST_CONNECTION_INITIALIZING:
		atomic_or(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
				&adapter->status);
		break;
	case FSF_PROT_DUPLICATE_REQUEST_ID:
		dev_err(&adapter->ccw_device->dev,
			"0x%Lx is an ambiguous request identifier\n",
			(unsigned long long)qtcb->bottom.support.req_handle);
		zfcp_erp_adapter_shutdown(adapter, 0, "fspse_4");
		break;
	case FSF_PROT_LINK_DOWN:
		zfcp_fsf_link_down_info_eval(req, &psq->link_down_info);
		/* go through reopen to flush pending requests */
		zfcp_erp_adapter_reopen(adapter, 0, "fspse_6");
		break;
	case FSF_PROT_REEST_QUEUE:
		/* All ports should be marked as ready to run again */
		zfcp_erp_set_adapter_status(adapter,
					    ZFCP_STATUS_COMMON_RUNNING);
		zfcp_erp_adapter_reopen(adapter,
					ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
					ZFCP_STATUS_COMMON_ERP_FAILED,
					"fspse_8");
		break;
	default:
		dev_err(&adapter->ccw_device->dev,
			"0x%x is not a valid transfer protocol status\n",
			qtcb->prefix.prot_status);
		zfcp_qdio_siosl(adapter);
		zfcp_erp_adapter_shutdown(adapter, 0, "fspse_9");
	}
	req->status |= ZFCP_STATUS_FSFREQ_ERROR;
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 203 66.12% 4 28.57%
martin schwidefsky martin schwidefsky 71 23.13% 1 7.14%
christof schmitt christof schmitt 12 3.91% 4 28.57%
andrew morton andrew morton 11 3.58% 1 7.14%
maxim shchetynin maxim shchetynin 5 1.63% 1 7.14%
martin peschke martin peschke 3 0.98% 1 7.14%
heiko carstens heiko carstens 1 0.33% 1 7.14%
peter zijlstra peter zijlstra 1 0.33% 1 7.14%
Total 307 100.00% 14 100.00%

/**
 * zfcp_fsf_req_complete - process completion of a FSF request
 * @fsf_req: The FSF request that has been completed.
 *
 * When a request has been completed either from the FCP adapter,
 * or it has been dismissed due to a queue shutdown, this function
 * is called to process the completion status and trigger further
 * events related to the FSF request.
 */


static void zfcp_fsf_req_complete(struct zfcp_fsf_req *req)
{
	if (unlikely(req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) {
		zfcp_fsf_status_read_handler(req);
		return;
	}

	del_timer(&req->timer);
	zfcp_fsf_protstatus_eval(req);
	zfcp_fsf_fsfstatus_eval(req);
	req->handler(req);

	if (req->erp_action)
		zfcp_erp_notify(req->erp_action, 0);

	if (likely(req->status & ZFCP_STATUS_FSFREQ_CLEANUP))
		zfcp_fsf_req_free(req);
	else
		complete(&req->completion);
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 68 71.58% 3 50.00%
christof schmitt christof schmitt 19 20.00% 2 33.33%
martin schwidefsky martin schwidefsky 8 8.42% 1 16.67%
Total 95 100.00% 6 100.00%

/**
 * zfcp_fsf_req_dismiss_all - dismiss all fsf requests
 * @adapter: pointer to struct zfcp_adapter
 *
 * Never ever call this without shutting down the adapter first.
 * Otherwise the adapter would continue using and corrupting s390 storage.
 * Included BUG_ON() call to ensure this is done.
 * ERP is supposed to be the only user of this function.
 */


void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter)
{
	struct zfcp_fsf_req *req, *tmp;
	LIST_HEAD(remove_queue);

	BUG_ON(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP);
	zfcp_reqlist_move(adapter->req_list, &remove_queue);

	list_for_each_entry_safe(req, tmp, &remove_queue, list) {
		list_del(&req->list);
		req->status |= ZFCP_STATUS_FSFREQ_DISMISSED;
		zfcp_fsf_req_complete(req);
	}
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 76 98.70% 1 50.00%
christof schmitt christof schmitt 1 1.30% 1 50.00%
Total 77 100.00% 2 100.00%


#define ZFCP_FSF_PORTSPEED_1GBIT	(1 <<  0)

#define ZFCP_FSF_PORTSPEED_2GBIT	(1 <<  1)

#define ZFCP_FSF_PORTSPEED_4GBIT	(1 <<  2)

#define ZFCP_FSF_PORTSPEED_10GBIT	(1 <<  3)

#define ZFCP_FSF_PORTSPEED_8GBIT	(1 <<  4)

#define ZFCP_FSF_PORTSPEED_16GBIT	(1 <<  5)

#define ZFCP_FSF_PORTSPEED_NOT_NEGOTIATED (1 << 15)



static u32 zfcp_fsf_convert_portspeed(u32 fsf_speed)
{
	u32 fdmi_speed = 0;
	if (fsf_speed & ZFCP_FSF_PORTSPEED_1GBIT)
		fdmi_speed |= FC_PORTSPEED_1GBIT;
	if (fsf_speed & ZFCP_FSF_PORTSPEED_2GBIT)
		fdmi_speed |= FC_PORTSPEED_2GBIT;
	if (fsf_speed & ZFCP_FSF_PORTSPEED_4GBIT)
		fdmi_speed |= FC_PORTSPEED_4GBIT;
	if (fsf_speed & ZFCP_FSF_PORTSPEED_10GBIT)
		fdmi_speed |= FC_PORTSPEED_10GBIT;
	if (fsf_speed & ZFCP_FSF_PORTSPEED_8GBIT)
		fdmi_speed |= FC_PORTSPEED_8GBIT;
	if (fsf_speed & ZFCP_FSF_PORTSPEED_16GBIT)
		fdmi_speed |= FC_PORTSPEED_16GBIT;
	if (fsf_speed & ZFCP_FSF_PORTSPEED_NOT_NEGOTIATED)
		fdmi_speed |= FC_PORTSPEED_NOT_NEGOTIATED;
	return fdmi_speed;
}

Contributors
Person Tokens Prop Commits CommitProp
steffen maier steffen maier 87 100.00% 1 100.00%
Total 87 100.00% 1 100.00%



static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req)
{
	struct fsf_qtcb_bottom_config *bottom = &req->qtcb->bottom.config;
	struct zfcp_adapter *adapter = req->adapter;
	struct Scsi_Host *shost = adapter->scsi_host;
	struct fc_els_flogi *nsp, *plogi;

	/* adjust pointers for missing command code */
	nsp = (struct fc_els_flogi *) ((u8 *)&bottom->nport_serv_param
					- sizeof(u32));
	plogi = (struct fc_els_flogi *) ((u8 *)&bottom->plogi_payload
					- sizeof(u32));

	if (req->data)
		memcpy(req->data, bottom, sizeof(*bottom));

	fc_host_port_name(shost) = nsp->fl_wwpn;
	fc_host_node_name(shost) = nsp->fl_wwnn;
	fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3;

	adapter->timer_ticks = bottom->timer_interval & ZFCP_FSF_TIMER_INT_MASK;
	adapter->stat_read_buf_num = max(bottom->status_read_buf_num,
					 (u16)FSF_STATUS_READS_RECOM);

	if (fc_host_permanent_port_name(shost) == -1)
		fc_host_permanent_port_name(shost) = fc_host_port_name(shost);

	zfcp_scsi_set_prot(adapter);

	/* no error return above here, otherwise must fix call chains */
	/* do not evaluate invalid fields */
	if (req->qtcb->header.fsf_status == FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE)
		return 0;

	fc_host_port_id(shost) = ntoh24(bottom->s_id);
	fc_host_speed(shost) =
		zfcp_fsf_convert_portspeed(bottom->fc_link_speed);

	adapter->hydra_version = bottom->adapter_type;

	switch (bottom->fc_topology) {
	case FSF_TOPO_P2P:
		adapter->peer_d_id = ntoh24(bottom->peer_d_id);
		adapter->peer_wwpn = plogi->fl_wwpn;
		adapter->peer_wwnn = plogi->fl_wwnn;
		fc_host_port_type(shost) = FC_PORTTYPE_PTP;
		break;
	case FSF_TOPO_FABRIC:
		fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
		break;
	case FSF_TOPO_AL:
		fc_host_port_type(shost) = FC_PORTTYPE_NLPORT;
		/* fall through */
	default:
		dev_err(&adapter->ccw_device->dev,
			"Unknown or unsupported arbitrated loop "
			"fibre channel topology detected\n");
		zfcp_erp_adapter_shutdown(adapter, 0, "fsece_1");
		return -EIO;
	}

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
christof schmitt christof schmitt 124 36.05% 8 42.11%
swen schillig swen schillig 115 33.43% 2 10.53%
steffen maier steffen maier 54 15.70% 1 5.26%
maxim shchetynin maxim shchetynin 26 7.56% 4 21.05%
martin schwidefsky martin schwidefsky 20 5.81% 1 5.26%
andrew morton andrew morton 4 1.16% 2 10.53%
martin peschke martin peschke 1 0.29% 1 5.26%
Total 344 100.00% 19 100.00%



static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req)
{
	struct zfcp_adapter *adapter = req->adapter;
	struct fsf_qtcb *qtcb = req->qtcb;
	struct fsf_qtcb_bottom_config *bottom = &qtcb->bottom.config;
	struct Scsi_Host *shost = adapter->scsi_host;

	if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
		return;

	adapter->fsf_lic_version = bottom->lic_version;
	adapter->adapter_features = bottom->adapter_features;
	adapter->connection_features = bottom->connection_features;
	adapter->peer_wwpn = 0;
	adapter->peer_wwnn = 0;
	adapter->peer_d_id = 0;

	switch (qtcb->header.fsf_status) {
	case FSF_GOOD:
		if (zfcp_fsf_exchange_config_evaluate(req))
			return;

		if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) {
			dev_err(&adapter->ccw_device->dev,
				"FCP adapter maximum QTCB size (%d bytes) "
				"is too small\n",
				bottom->max_qtcb_size);
			zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh1");
			return;
		}
		atomic_or(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
				&adapter->status);
		break;
	case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
		fc_host_node_name(shost) = 0;
		fc_host_port_name(shost) = 0;
		fc_host_port_id(shost) = 0;
		fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
		fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;
		adapter->hydra_version = 0;

		/* avoids adapter shutdown to be able to recognize
                 * events such as LINK UP */
		atomic_or(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
				&adapter->status);
		zfcp_fsf_link_down_info_eval(req,
			&qtcb->header.fsf_status_qual.link_down_info);
		if (zfcp_fsf_exchange_config_evaluate(req))
			return;
		break;
	default:
		zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh3");
		return;
	}

	if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) {
		adapter->hardware_version = bottom->hardware_version;
		memcpy(fc_host_serial_number(shost), bottom->serial_number,
		       min(FC_SERIAL_NUMBER_SIZE, 17));
		EBCASC(fc_host_serial_number(shost),
		       min(FC_SERIAL_NUMBER_SIZE, 17));
	}

	if (FSF_QTCB_CURRENT_VERSION < bottom->low_qtcb_version) {
		dev_err(&adapter->ccw_device->dev,
			"The FCP adapter only supports newer "
			"control block versions\n");
		zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh4");
		return;
	}
	if (FSF_QTCB_CURRENT_VERSION > bottom->high_qtcb_version) {
		dev_err(&adapter->ccw_device->dev,
			"The FCP adapter only supports older "
			"control block versions\n");
		zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh5");
	}
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 243 63.95% 2 13.33%
martin schwidefsky martin schwidefsky 95 25.00% 2 13.33%
christof schmitt christof schmitt 13 3.42% 4 26.67%
daniel hansel daniel hansel 10 2.63% 1 6.67%
steffen maier steffen maier 8 2.11% 1 6.67%
andrew morton andrew morton 5 1.32% 1 6.67%
andreas herrmann andreas herrmann 3 0.79% 2 13.33%
peter zijlstra peter zijlstra 2 0.53% 1 6.67%
martin peschke martin peschke 1 0.26% 1 6.67%
Total 380 100.00% 15 100.00%



static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req)
{
	struct zfcp_adapter *adapter = req->adapter;
	struct fsf_qtcb_bottom_port *bottom = &req->qtcb->bottom.port;
	struct Scsi_Host *shost = adapter->scsi_host;

	if (req->data)
		memcpy(req->data, bottom, sizeof(*bottom));

	if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) {
		fc_host_permanent_port_name(shost) = bottom->wwpn;
		fc_host_port_type(shost) = FC_PORTTYPE_NPIV;
	} else
		fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
	fc_host_maxframe_size(shost) = bottom->maximum_frame_size;
	fc_host_supported_speeds(shost) =
		zfcp_fsf_convert_portspeed(bottom->supported_speed);
	memcpy(fc_host_supported_fc4s(shost), bottom->supported_fc4_types,
	       FC_FC4_LIST_SIZE);
	memcpy(fc_host_active_fc4s(shost), bottom->active_fc4_types,
	       FC_FC4_LIST_SIZE);
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 89 59.33% 1 16.67%
christof schmitt christof schmitt 37 24.67% 2 33.33%
andrew morton andrew morton 16 10.67% 1 16.67%
martin schwidefsky martin schwidefsky 5 3.33% 1 16.67%
steffen maier steffen maier 3 2.00% 1 16.67%
Total 150 100.00% 6 100.00%



static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req)
{
	struct fsf_qtcb *qtcb = req->qtcb;

	if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
		return;

	switch (qtcb->header.fsf_status) {
	case FSF_GOOD:
		zfcp_fsf_exchange_port_evaluate(req);
		break;
	case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
		zfcp_fsf_exchange_port_evaluate(req);
		zfcp_fsf_link_down_info_eval(req,
			&qtcb->header.fsf_status_qual.link_down_info);
		break;
	}
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 50 70.42% 1 33.33%
andrew morton andrew morton 14 19.72% 1 33.33%
martin schwidefsky martin schwidefsky 7 9.86% 1 33.33%
Total 71 100.00% 3 100.00%



static struct zfcp_fsf_req *zfcp_fsf_alloc(mempool_t *pool)
{
	struct zfcp_fsf_req *req;

	if (likely(pool))
		req = mempool_alloc(pool, GFP_ATOMIC);
	else
		req = kmalloc(sizeof(*req), GFP_ATOMIC);

	if (unlikely(!req))
		return NULL;

	memset(req, 0, sizeof(*req));
	req->pool = pool;
	return req;
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 63 78.75% 2 33.33%
andreas herrmann andreas herrmann 7 8.75% 1 16.67%
christof schmitt christof schmitt 6 7.50% 1 16.67%
maxim shchetynin maxim shchetynin 3 3.75% 1 16.67%
andrew morton andrew morton 1 1.25% 1 16.67%
Total 80 100.00% 6 100.00%



static struct fsf_qtcb *zfcp_qtcb_alloc(mempool_t *pool)
{
	struct fsf_qtcb *qtcb;

	if (likely(pool))
		qtcb = mempool_alloc(pool, GFP_ATOMIC);
	else
		qtcb = kmem_cache_alloc(zfcp_fsf_qtcb_cache, GFP_ATOMIC);

	if (unlikely(!qtcb))
		return NULL;

	memset(qtcb, 0, sizeof(*qtcb));
	return qtcb;
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 52 74.29% 2 33.33%
martin schwidefsky martin schwidefsky 12 17.14% 1 16.67%
andreas herrmann andreas herrmann 4 5.71% 1 16.67%
christof schmitt christof schmitt 1 1.43% 1 16.67%
andrew morton andrew morton 1 1.43% 1 16.67%
Total 70 100.00% 6 100.00%



static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_qdio *qdio,
						u32 fsf_cmd, u8 sbtype,
						mempool_t *pool)
{
	struct zfcp_adapter *adapter = qdio->adapter;
	struct zfcp_fsf_req *req = zfcp_fsf_alloc(pool);

	if (unlikely(!req))
		return ERR_PTR(-ENOMEM);

	if (adapter->req_no == 0)
		adapter->req_no++;

	INIT_LIST_HEAD(&req->list);
	init_timer(&req->timer);
	init_completion(&req->completion);

	req->adapter = adapter;
	req->fsf_command = fsf_cmd;
	req->req_id = adapter->req_no;

	if (likely(fsf_cmd != FSF_QTCB_UNSOLICITED_STATUS)) {
		if (likely(pool))
			req->qtcb = zfcp_qtcb_alloc(adapter->pool.qtcb_pool);
		else
			req->qtcb = zfcp_qtcb_alloc(NULL);

		if (unlikely(!req->qtcb)) {
			zfcp_fsf_req_free(req);
			return ERR_PTR(-ENOMEM);
		}

		req->seq_no = adapter->fsf_req_seq_no;
		req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no;
		req->qtcb->prefix.req_id = req->req_id;
		req->qtcb->prefix.ulp_info = 26;
		req->qtcb->prefix.qtcb_type = fsf_qtcb_type[req->fsf_command];
		req->qtcb->prefix.qtcb_version = FSF_QTCB_CURRENT_VERSION;
		req->qtcb->header.req_handle = req->req_id;
		req->qtcb->header.fsf_command = req->fsf_command;
	}

	zfcp_qdio_req_init(adapter->qdio, &req->qdio_req, req->req_id, sbtype,
			   req->qtcb, sizeof(struct fsf_qtcb));

	return req;
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 216 71.76% 5 33.33%
christof schmitt christof schmitt 33 10.96% 4 26.67%
andrew morton andrew morton 28 9.30% 1 6.67%
andreas herrmann andreas herrmann 13 4.32% 2 13.33%
martin schwidefsky martin schwidefsky 6 1.99% 1 6.67%
maxim shchetynin maxim shchetynin 4 1.33% 1 6.67%
jan glauber jan glauber 1 0.33% 1 6.67%
Total 301 100.00% 15 100.00%



static int zfcp_fsf_req_send(struct zfcp_fsf_req *req)
{
	struct zfcp_adapter *adapter = req->adapter;
	struct zfcp_qdio *qdio = adapter->qdio;
	int with_qtcb = (req->qtcb != NULL);
	int req_id = req->req_id;

	zfcp_reqlist_add(adapter->req_list, req);

	req->qdio_req.qdio_outb_usage = atomic_read(&qdio->req_q_free);
	req->issued = get_tod_clock();
	if (zfcp_qdio_send(qdio, &req->qdio_req)) {
		del_timer(&req->timer);
		/* lookup request again, list might have changed */
		zfcp_reqlist_find_rm(adapter->req_list, req_id);
		zfcp_erp_adapter_reopen(adapter, 0, "fsrs__1");
		return -EIO;
	}

	/* Don't increase for unsolicited status */
	if (with_qtcb)
		adapter->fsf_req_seq_no++;
	adapter->req_no++;

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 63 45.00% 6 30.00%
christof schmitt christof schmitt 26 18.57% 6 30.00%
martin schwidefsky martin schwidefsky 14 10.00% 1 5.00%
martin petermann martin petermann 12 8.57% 1 5.00%
andrew morton andrew morton 12 8.57% 2 10.00%
stefan raspl stefan raspl 10 7.14% 1 5.00%
heiko carstens heiko carstens 2 1.43% 2 10.00%
martin peschke martin peschke 1 0.71% 1 5.00%
Total 140 100.00% 20 100.00%

/**
 * zfcp_fsf_status_read - send status read request
 * @adapter: pointer to struct zfcp_adapter
 * @req_flags: request flags
 * Returns: 0 on success, ERROR otherwise
 */


int zfcp_fsf_status_read(struct zfcp_qdio *qdio)
{
	struct zfcp_adapter *adapter = qdio->adapter;
	struct zfcp_fsf_req *req;
	struct fsf_status_read_buffer *sr_buf;
	struct page *page;
	int retval = -EIO;

	spin_lock_irq(&qdio->req_q_lock);
	if (zfcp_qdio_sbal_get(qdio))
		goto out;

	req = zfcp_fsf_req_create(qdio, FSF_QTCB_UNSOLICITED_STATUS,
				  SBAL_SFLAGS0_TYPE_STATUS,
				  adapter->pool.status_read_req);
	if (IS_ERR(req)) {
		retval = PTR_ERR(req);
		goto out;
	}

	page = mempool_alloc(adapter->pool.sr_data, GFP_ATOMIC);
	if (!page) {
		retval = -ENOMEM;
		goto failed_buf;
	}
	sr_buf = page_address(page);
	memset(sr_buf, 0, sizeof(*sr_buf));
	req->data = sr_buf;

	zfcp_qdio_fill_next(qdio, &req->qdio_req, sr_buf, sizeof(*sr_buf));
	zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);

	retval = zfcp_fsf_req_send(req);
	if (retval)
		goto failed_req_send;

	goto out;

failed_req_send:
	req->data = NULL;
	mempool_free(virt_to_page(sr_buf), adapter->pool.sr_data);
failed_buf:
	zfcp_dbf_hba_fsf_uss("fssr__1", req);
	zfcp_fsf_req_free(req);
out:
	spin_unlock_irq(&qdio->req_q_lock);
	return retval;
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 158 65.29% 7 36.84%
christof schmitt christof schmitt 42 17.36% 7 36.84%
andrew morton andrew morton 26 10.74% 2 10.53%
martin schwidefsky martin schwidefsky 14 5.79% 1 5.26%
martin peschke martin peschke 2 0.83% 2 10.53%
Total 242 100.00% 19 100.00%



static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req)
{
	struct scsi_device *sdev = req->data;
	struct zfcp_scsi_dev *zfcp_sdev;
	union fsf_status_qual *fsq = &req->qtcb->header.fsf_status_qual;

	if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
		return;

	zfcp_sdev = sdev_to_zfcp(sdev);

	switch (req->qtcb->header.fsf_status) {
	case FSF_PORT_HANDLE_NOT_VALID:
		if (fsq->word[0] == fsq->word[1]) {
			zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0,
						"fsafch1");
			req->status |= ZFCP_STATUS_FSFREQ_ERROR;
		}
		break;
	case FSF_LUN_HANDLE_NOT_VALID:
		if (fsq->word[0] == fsq->word[1]) {
			zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fsafch2");
			req->status |= ZFCP_STATUS_FSFREQ_ERROR;
		}
		break;
	case FSF_FCP_COMMAND_DOES_NOT_EXIST:
		req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED;
		break;
	case FSF_PORT_BOXED:
		zfcp_erp_set_port_status(zfcp_sdev->port,
					 ZFCP_STATUS_COMMON_ACCESS_BOXED);
		zfcp_erp_port_reopen(zfcp_sdev->port,
				     ZFCP_STATUS_COMMON_ERP_FAILED, "fsafch3");
		req->status |= ZFCP_STATUS_FSFREQ_ERROR;
		break;
	case FSF_LUN_BOXED:
		zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ACCESS_BOXED);
		zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
				    "fsafch4");
		req->status |= ZFCP_STATUS_FSFREQ_ERROR;
                break;
	case FSF_ADAPTER_STATUS_AVAILABLE:
		switch (fsq->word[0]) {
		case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
			zfcp_fc_test_link(zfcp_sdev->port);
			/* fall through */
		case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
			req->status |= ZFCP_STATUS_FSFREQ_ERROR;
			break;
		}
		break;
	case FSF_GOOD:
		req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED;
		break;
	}
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 225 86.87% 5 45.45%
christof schmitt christof schmitt 13 5.02% 2 18.18%
martin schwidefsky martin schwidefsky 9 3.47% 2 18.18%
martin peschke martin peschke 7 2.70% 1 9.09%
andrew morton andrew morton 5 1.93% 1 9.09%
Total 259 100.00% 11 100.00%

/**
 * zfcp_fsf_abort_fcp_cmnd - abort running SCSI command
 * @scmnd: The SCSI command to abort
 * Returns: pointer to struct zfcp_fsf_req
 */



struct zfcp_fsf_req *zfcp_fsf_abort_fcp_cmnd(struct scsi_cmnd *scmnd)
{
	struct zfcp_fsf_req *req = NULL;
	struct scsi_device *sdev = scmnd->device;
	struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
	struct zfcp_qdio *qdio = zfcp_sdev->port->adapter->qdio;
	unsigned long old_req_id = (unsigned long) scmnd->host_scribble;

	spin_lock_irq(&qdio->req_q_lock);
	if (zfcp_qdio_sbal_get(qdio))
		goto out;
	req = zfcp_fsf_req_create(qdio, FSF_QTCB_ABORT_FCP_CMND,
				  SBAL_SFLAGS0_TYPE_READ,
				  qdio->adapter->pool.scsi_abort);
	if (IS_ERR(req)) {
		req = NULL;
		goto out;
	}

	if (unlikely(!(atomic_read(&zfcp_sdev->status) &
		       ZFCP_STATUS_COMMON_UNBLOCKED)))
		goto out_error_free;

	zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);

	req->data = sdev;
	req->handler = zfcp_fsf_abort_fcp_command_handler;
	req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
	req->qtcb->header.port_handle = zfcp_sdev->port->handle;
	req->qtcb->bottom.support.req_handle = (u64) old_req_id;

	zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
	if (!zfcp_fsf_req_send(req))
		goto out;

out_error_free:
	zfcp_fsf_req_free(req);
	req = NULL;
out:
	spin_unlock_irq(&qdio->req_q_lock);
	return req;
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 137 56.61% 6 33.33%
christof schmitt christof schmitt 55 22.73% 7 38.89%
martin schwidefsky martin schwidefsky 41 16.94% 1 5.56%
andreas herrmann andreas herrmann 5 2.07% 2 11.11%
maxim shchetynin maxim shchetynin 3 1.24% 1 5.56%
jan glauber jan glauber 1 0.41% 1 5.56%
Total 242 100.00% 18 100.00%



static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req)
{
	struct zfcp_adapter *adapter = req->adapter;
	struct zfcp_fsf_ct_els *ct = req->data;
	struct fsf_qtcb_header *header = &req->qtcb->header;

	ct->status = -EINVAL;

	if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
		goto skip_fsfstatus;

	switch (header->fsf_status) {
        case FSF_GOOD:
		zfcp_dbf_san_res("fsscth2", req);
		ct->status = 0;
		break;
        case FSF_SERVICE_CLASS_NOT_SUPPORTED:
		zfcp_fsf_class_not_supp(req);
		break;
        case FSF_ADAPTER_STATUS_AVAILABLE:
                switch (header->fsf_status_qual.word[0]){
                case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
                case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
			req->status |= ZFCP_STATUS_FSFREQ_ERROR;
			break;
                }
                break;
        case FSF_PORT_BOXED:
		req->status |= ZFCP_STATUS_FSFREQ_ERROR;
		break;
	case FSF_PORT_HANDLE_NOT_VALID:
		zfcp_erp_adapter_reopen(adapter, 0, "fsscth1");
		/* fall through */
	case FSF_GENERIC_COMMAND_REJECTED:
	case FSF_PAYLOAD_SIZE_MISMATCH:
	case FSF_REQUEST_SIZE_TOO_LARGE:
	case FSF_RESPONSE_SIZE_TOO_LARGE:
	case FSF_SBAL_MISMATCH:
		req->status |= ZFCP_STATUS_FSFREQ_ERROR;
		break;
	}

skip_fsfstatus:
	if (ct->handler)
		ct->handler(ct->handler_data);
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 141 76.22% 4 30.77%
martin schwidefsky martin schwidefsky 12 6.49% 1 7.69%
maxim shchetynin maxim shchetynin 12 6.49% 1 7.69%
andreas herrmann andreas herrmann 10 5.41% 3 23.08%
christof schmitt christof schmitt 8 4.32% 2 15.38%
andrew morton andrew morton 1 0.54% 1 7.69%
steffen maier steffen maier 1 0.54% 1 7.69%
Total 185 100.00% 13 100.00%



static void zfcp_fsf_setup_ct_els_unchained(struct zfcp_qdio *qdio,
					    struct zfcp_qdio_req *q_req,
					    struct scatterlist *sg_req,
					    struct scatterlist *sg_resp)
{
	zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_req), sg_req->length);
	zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_resp), sg_resp->length);
	zfcp_qdio_set_sbale_last(qdio, q_req);
}

Contributors
Person Tokens Prop Commits CommitProp
christof schmitt christof schmitt 65 100.00% 2 100.00%
Total 65 100.00% 2 100.00%



static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req,
				       struct scatterlist *sg_req,
				       struct scatterlist *sg_resp)
{
	struct zfcp_adapter *adapter = req->adapter;
	struct zfcp_qdio *qdio = adapter->qdio;
	struct fsf_qtcb *qtcb = req->qtcb;
	u32 feat = adapter->adapter_features;

	if (zfcp_adapter_multi_buffer_active(adapter)) {
		if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_req))
			return -EIO;
		if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_resp))
			return -EIO;

		zfcp_qdio_set_data_div(qdio, &req->qdio_req,
					zfcp_qdio_sbale_count(sg_req));
		zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
		zfcp_qdio_set_scount(qdio, &req->qdio_req);
		return 0;
	}

	/* use single, unchained SBAL if it can hold the request */
	if (zfcp_qdio_sg_one_sbale(sg_req) && zfcp_qdio_sg_one_sbale(sg_resp)) {
		zfcp_fsf_setup_ct_els_unchained(qdio, &req->qdio_req,
						sg_req, sg_resp);
		return 0;
	}

	if (!(feat & FSF_FEATURE_ELS_CT_CHAINED_SBALS))
		return -EOPNOTSUPP;

	if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_req))
		return -EIO;

	qtcb->bottom.support.req_buf_length = zfcp_qdio_real_bytes(sg_req);

	zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
	zfcp_qdio_skip_to_last_sbale(qdio, &req->qdio_req);

	if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_resp))
		return -EIO;

	qtcb->bottom.support.resp_buf_length = zfcp_qdio_real_bytes(sg_resp);

	zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 150 53.96% 5 35.71%
christof schmitt christof schmitt 93 33.45% 6 42.86%
felix beck felix beck 20 7.19% 1 7.14%
andreas herrmann andreas herrmann 14 5.04% 1 7.14%
martin schwidefsky martin schwidefsky 1 0.36% 1 7.14%
Total 278 100.00% 14 100.00%



static int zfcp_fsf_setup_ct_els(struct zfcp_fsf_req *req,
				 struct scatterlist *sg_req,
				 struct scatterlist *sg_resp,
				 unsigned int timeout)
{
	int ret;

	ret = zfcp_fsf_setup_ct_els_sbals(req, sg_req, sg_resp);
	if (ret)
		return ret;

	/* common settings for ct/gs and els requests */
	if (timeout > 255)
		timeout = 255; /* max value accepted by hardware */
	req->qtcb->bottom.support.service_class = FSF_CLASS_3;
	req->qtcb->bottom.support.timeout = timeout;
	zfcp_fsf_start_timer(req, (timeout + 10) * HZ);

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
christof schmitt christof schmitt 77 78.57% 4 57.14%
swen schillig swen schillig 19 19.39% 2 28.57%
martin schwidefsky martin schwidefsky 2 2.04% 1 14.29%
Total 98 100.00% 7 100.00%

/**
 * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS)
 * @ct: pointer to struct zfcp_send_ct with data for request
 * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req
 */


int zfcp_fsf_send_ct(struct zfcp_fc_wka_port *wka_port,
		     struct zfcp_fsf_ct_els *ct, mempool_t *pool,
		     unsigned int timeout)
{
	struct zfcp_qdio *qdio = wka_port->adapter->qdio;
	struct zfcp_fsf_req *req;
	int ret = -EIO;

	spin_lock_irq(&qdio->req_q_lock);
	if (zfcp_qdio_sbal_get(qdio))
		goto out;

	req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_GENERIC,
				  SBAL_SFLAGS0_TYPE_WRITE_READ, pool);

	if (IS_ERR(req)) {
		ret = PTR_ERR(req);
		goto out;
	}

	req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
	ret = zfcp_fsf_setup_ct_els(req, ct->req, ct->resp, timeout);
	if (ret)
		goto failed_send;

	req->handler = zfcp_fsf_send_ct_handler;
	req->qtcb->header.port_handle = wka_port->handle;
	req->data = ct;

	zfcp_dbf_san_req("fssct_1", req, wka_port->d_id);

	ret = zfcp_fsf_req_send(req);
	if (ret)
		goto failed_send;

	goto out;

failed_send:
	zfcp_fsf_req_free(req);
out:
	spin_unlock_irq(&qdio->req_q_lock);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 121 61.42% 6 37.50%
martin schwidefsky martin schwidefsky 46 23.35% 1 6.25%
christof schmitt christof schmitt 17 8.63% 6 37.50%
andrew morton andrew morton 10 5.08% 1 6.25%
andreas herrmann andreas herrmann 2 1.02% 1 6.25%
jan glauber jan glauber 1 0.51% 1 6.25%
Total 197 100.00% 16 100.00%



static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req)
{
	struct zfcp_fsf_ct_els *send_els = req->data;
	struct fsf_qtcb_header *header = &req->qtcb->header;

	send_els->status = -EINVAL;

	if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
		goto skip_fsfstatus;

	switch (header->fsf_status) {
	case FSF_GOOD:
		zfcp_dbf_san_res("fsselh1", req);
		send_els->status = 0;
		break;
	case FSF_SERVICE_CLASS_NOT_SUPPORTED:
		zfcp_fsf_class_not_supp(req);
		break;
	case FSF_ADAPTER_STATUS_AVAILABLE:
		switch (header->fsf_status_qual.word[0]){
		case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
		case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
		case FSF_SQ_RETRY_IF_POSSIBLE:
			req->status |= ZFCP_STATUS_FSFREQ_ERROR;
			break;
		}
		break;
	case FSF_ELS_COMMAND_REJECTED:
	case FSF_PAYLOAD_SIZE_MISMATCH:
	case FSF_REQUEST_SIZE_TOO_LARGE:
	case FSF_RESPONSE_SIZE_TOO_LARGE:
		break;
	case FSF_SBAL_MISMATCH:
		/* should never occur, avoided in zfcp_fsf_send_els */
		/* fall through */
	default:
		req->status |= ZFCP_STATUS_FSFREQ_ERROR;
		break;
	}
skip_fsfstatus:
	if (send_els->handler)
		send_els->handler(send_els->handler_data);
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 69 43.12% 2 33.33%
martin schwidefsky martin schwidefsky 68 42.50% 1 16.67%
andrew morton andrew morton 21 13.12% 1 16.67%
christof schmitt christof schmitt 1 0.62% 1 16.67%
lucas de marchi lucas de marchi 1 0.62% 1 16.67%
Total 160 100.00% 6 100.00%

/**
 * zfcp_fsf_send_els - initiate an ELS command (FC-FS)
 * @els: pointer to struct zfcp_send_els with data for the command
 */


int zfcp_fsf_send_els(struct zfcp_adapter *adapter, u32 d_id,
		      struct zfcp_fsf_ct_els *els, unsigned int timeout)
{
	struct zfcp_fsf_req *req;
	struct zfcp_qdio *qdio = adapter->qdio;
	int ret = -EIO;

	spin_lock_irq(&qdio->req_q_lock);
	if (zfcp_qdio_sbal_get(qdio))
		goto out;

	req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_ELS,
				  SBAL_SFLAGS0_TYPE_WRITE_READ, NULL);

	if (IS_ERR(req)) {
		ret = PTR_ERR(req);
		goto out;
	}

	req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;

	if (!zfcp_adapter_multi_buffer_active(adapter))
		zfcp_qdio_sbal_limit(qdio, &req->qdio_req, 2);

	ret = zfcp_fsf_setup_ct_els(req, els->req, els->resp, timeout);

	if (ret)
		goto failed_send;

	hton24(req->qtcb->bottom.support.d_id, d_id);
	req->handler = zfcp_fsf_send_els_handler;
	req->data = els;

	zfcp_dbf_san_req("fssels1", req, d_id);

	ret = zfcp_fsf_req_send(req);
	if (ret)
		goto failed_send;

	goto out;

failed_send:
	zfcp_fsf_req_free(req);
out:
	spin_unlock_irq(&qdio->req_q_lock);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 160 74.42% 7 35.00%
christof schmitt christof schmitt 24 11.16% 8 40.00%
andrew morton andrew morton 17 7.91% 1 5.00%
martin schwidefsky martin schwidefsky 11 5.12% 1 5.00%
jan glauber jan glauber 1 0.47% 1 5.00%
ralph wuerthner ralph wuerthner 1 0.47% 1 5.00%
andreas herrmann andreas herrmann 1 0.47% 1 5.00%
Total 215 100.00% 20 100.00%



int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
{
	struct zfcp_fsf_req *req;
	struct zfcp_qdio *qdio = erp_action->adapter->qdio;
	int retval = -EIO;

	spin_lock_irq(&qdio->req_q_lock);
	if (zfcp_qdio_sbal_get(qdio))
		goto out;

	req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA,
				  SBAL_SFLAGS0_TYPE_READ,
				  qdio->adapter->pool.erp_req);

	if (IS_ERR(req)) {
		retval = PTR_ERR(req);
		goto out;
	}

	req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
	zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);

	req->qtcb->bottom.config.feature_selection =
			FSF_FEATURE_NOTIFICATION_LOST |
			FSF_FEATURE_UPDATE_ALERT;
	req->erp_action = erp_action;
	req->handler = zfcp_fsf_exchange_config_data_handler;
	erp_action->fsf_req_id = req->req_id;

	zfcp_fsf_start_erp_timer(req);
	retval = zfcp_fsf_req_send(req);
	if (retval) {
		zfcp_fsf_req_free(req);
		erp_action->fsf_req_id = 0;
	}
out:
	spin_unlock_irq(&qdio->req_q_lock);
	return retval;
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 78 43.33% 5 31.25%
martin schwidefsky martin schwidefsky 61 33.89% 1 6.25%
christof schmitt christof schmitt 14 7.78% 7 43.75%
andreas herrmann andreas herrmann 13 7.22% 1 6.25%
andrew morton andrew morton 13 7.22% 1 6.25%
jan glauber jan glauber 1 0.56% 1 6.25%
Total 180 100.00% 16 100.00%



int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *qdio,
				       struct fsf_qtcb_bottom_config *data)
{
	struct zfcp_fsf_req *req = NULL;
	int retval = -EIO;

	spin_lock_irq(&qdio->req_q_lock);
	if (zfcp_qdio_sbal_get(qdio))
		goto out_unlock;

	req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA,
				  SBAL_SFLAGS0_TYPE_READ, NULL);

	if (IS_ERR(req)) {
		retval = PTR_ERR(req);
		goto out_unlock;
	}

	zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
	req->handler = zfcp_fsf_exchange_config_data_handler;

	req->qtcb->bottom.config.feature_selection =
			FSF_FEATURE_NOTIFICATION_LOST |
			FSF_FEATURE_UPDATE_ALERT;

	if (data)
		req->data = data;

	zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
	retval = zfcp_fsf_req_send(req);
	spin_unlock_irq(&qdio->req_q_lock);
	if (!retval)
		wait_for_completion(&req->completion);

	zfcp_fsf_req_free(req);
	return retval;

out_unlock:
	spin_unlock_irq(&qdio->req_q_lock);
	return retval;
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 90 51.72% 4 26.67%
martin schwidefsky martin schwidefsky 24 13.79% 2 13.33%
andrew morton andrew morton 24 13.79% 1 6.67%
christof schmitt christof schmitt 22 12.64% 6 40.00%
andreas herrmann andreas herrmann 13 7.47% 1 6.67%
jan glauber jan glauber 1 0.57% 1 6.67%
Total 174 100.00% 15 100.00%

/**
 * zfcp_fsf_exchange_port_data - request information about local port
 * @erp_action: ERP action for the adapter for which port data is requested
 * Returns: 0 on success, error otherwise
 */


int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action)
{
	struct zfcp_qdio *qdio = erp_action->adapter->qdio;
	struct zfcp_fsf_req *req;
	int retval = -EIO;

	if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
		return -EOPNOTSUPP;

	spin_lock_irq(&qdio->req_q_lock);
	if (zfcp_qdio_sbal_get(qdio))
		goto out;

	req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA,
				  SBAL_SFLAGS0_TYPE_READ,
				  qdio->adapter->pool.erp_req);

	if (IS_ERR(req)) {
		retval = PTR_ERR(req);
		goto out;
	}

	req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
	zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);

	req->handler = zfcp_fsf_exchange_port_data_handler;
	req->erp_action = erp_action;
	erp_action->fsf_req_id = req->req_id;

	zfcp_fsf_start_erp_timer(req);
	retval = zfcp_fsf_req_send(req);
	if (retval) {
		zfcp_fsf_req_free(req);
		erp_action->fsf_req_id = 0;
	}
out:
	spin_unlock_irq(&qdio->req_q_lock);
	return retval;
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 114 62.30% 4 25.00%
andrew morton andrew morton 32 17.49% 1 6.25%
christof schmitt christof schmitt 24 13.11% 7 43.75%
martin schwidefsky martin schwidefsky 11 6.01% 2 12.50%
jan glauber jan glauber 1 0.55% 1 6.25%
martin peschke martin peschke 1 0.55% 1 6.25%
Total 183 100.00% 16 100.00%

/**
 * zfcp_fsf_exchange_port_data_sync - request information about local port
 * @qdio: pointer to struct zfcp_qdio
 * @data: pointer to struct fsf_qtcb_bottom_port
 * Returns: 0 on success, error otherwise
 */


int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *qdio,
				     struct fsf_qtcb_bottom_port *data)
{
	struct zfcp_fsf_req *req = NULL;
	int retval = -EIO;

	if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
		return -EOPNOTSUPP;

	spin_lock_irq(&qdio->req_q_lock);
	if (zfcp_qdio_sbal_get(qdio))
		goto out_unlock;

	req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA,
				  SBAL_SFLAGS0_TYPE_READ, NULL);

	if (IS_ERR(req)) {
		retval = PTR_ERR(req);
		goto out_unlock;
	}

	if (data)
		req->data = data;

	zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);

	req->handler = zfcp_fsf_exchange_port_data_handler;
	zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
	retval = zfcp_fsf_req_send(req);
	spin_unlock_irq(&qdio->req_q_lock);

	if (!retval)
		wait_for_completion(&req->completion);

	zfcp_fsf_req_free(req);

	return retval;

out_unlock:
	spin_unlock_irq(&qdio->req_q_lock);
	return retval;
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 106 59.89% 4 26.67%
andrew morton andrew morton 28 15.82% 1 6.67%
christof schmitt christof schmitt 22 12.43% 6 40.00%
martin schwidefsky martin schwidefsky 16 9.04% 2 13.33%
andreas herrmann andreas herrmann 4 2.26% 1 6.67%
jan glauber jan glauber 1 0.56% 1 6.67%
Total 177 100.00% 15 100.00%



static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req)
{
	struct zfcp_port *port = req->data;
	struct fsf_qtcb_header *header = &req->qtcb->header;
	struct fc_els_flogi *plogi;

	if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
		goto out;

	switch (header->fsf_status) {
	case FSF_PORT_ALREADY_OPEN:
		break;
	case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
		dev_warn(&req->adapter->ccw_device->dev,
			 "Not enough FCP adapter resources to open "
			 "remote port 0x%016Lx\n",
			 (unsigned long long)port->wwpn);
		zfcp_erp_set_port_status(port,
					 ZFCP_STATUS_COMMON_ERP_FAILED);
		req->status |= ZFCP_STATUS_FSFREQ_ERROR;
		break;
	case FSF_ADAPTER_STATUS_AVAILABLE:
		switch (header->fsf_status_qual.word[0]) {
		case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
		case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
		case FSF_SQ_NO_RETRY_POSSIBLE:
			req->status |= ZFCP_STATUS_FSFREQ_ERROR;
			break;
		}
		break;
	case FSF_GOOD:
		port->handle = header->port_handle;
		atomic_or(ZFCP_STATUS_COMMON_OPEN |
				ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
		atomic_andnot(ZFCP_STATUS_COMMON_ACCESS_BOXED,
		                  &port->status);
		/* check whether D_ID has changed during open */
		/*
                 * FIXME: This check is not airtight, as the FCP channel does
                 * not monitor closures of target port connections caused on
                 * the remote side. Thus, they might miss out on invalidating
                 * locally cached WWPNs (and other N_Port parameters) of gone
                 * target ports. So, our heroic attempt to make things safe
                 * could be undermined by 'open port' response data tagged with
                 * obsolete WWPNs. Another reason to monitor potential
                 * connection closures ourself at least (by interpreting
                 * incoming ELS' and unsolicited status). It just crosses my
                 * mind that one should be able to cross-check by means of
                 * another GID_PN straight after a port has been opened.
                 * Alternately, an ADISC/PDISC ELS should suffice, as well.
                 */
		plogi = (struct fc_els_flogi *) req->qtcb->bottom.support.els;
		if (req->qtcb->bottom.support.els1_length >=
		    FSF_PLOGI_MIN_LEN)
				zfcp_fc_plogi_evaluate(port, plogi);
		break;
	case FSF_UNKNOWN_OP_SUBTYPE:
		req->status |= ZFCP_STATUS_FSFREQ_ERROR;
		break;
	}

out:
	put_device(&port->dev);
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 129 56.58% 4 22.22%
andrew morton andrew morton 39 17.11% 2 11.11%
christof schmitt christof schmitt 25 10.96% 5 27.78%
martin schwidefsky martin schwidefsky 20 8.77% 3 16.67%
martin petermann martin petermann 9 3.95% 1 5.56%
andreas herrmann andreas herrmann 3 1.32% 1 5.56%
peter zijlstra peter zijlstra 2 0.88% 1 5.56%
martin peschke martin peschke 1 0.44% 1 5.56%
Total 228 100.00% 18 100.00%

/**
 * zfcp_fsf_open_port - create and send open port request
 * @erp_action: pointer to struct zfcp_erp_action
 * Returns: 0 on success, error otherwise
 */


int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action)
{
	struct zfcp_qdio *qdio = erp_action->adapter->qdio;
	struct zfcp_port *port = erp_action->port;
	struct zfcp_fsf_req *req;
	int retval = -EIO;

	spin_lock_irq(&qdio->req_q_lock);
	if (zfcp_qdio_sbal_get(qdio))
		goto out;

	req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
				  SBAL_SFLAGS0_TYPE_READ,
				  qdio->adapter->pool.erp_req);

	if (IS_ERR(req)) {
		retval = PTR_ERR(req);
		goto out;
	}

	req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
	zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);

	req->handler = zfcp_fsf_open_port_handler;
	hton24(req->qtcb->bottom.support.d_id, port->d_id);
	req->data = port;
	req->erp_action = erp_action;
	erp_action->fsf_req_id = req->req_id;
	get_device(&port->dev);

	zfcp_fsf_start_erp_timer(req);
	retval = zfcp_fsf_req_send(req);
	if (retval) {
		zfcp_fsf_req_free(req);
		erp_action->fsf_req_id = 0;
		put_device(&port->dev);
	}
out:
	spin_unlock_irq(&qdio->req_q_lock);
	return retval;
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 134 62.62% 6 24.00%
christof schmitt christof schmitt 22 10.28% 10 40.00%
martin schwidefsky martin schwidefsky 19 8.88% 2 8.00%
martin petermann martin petermann 17 7.94% 1 4.00%
andrew morton andrew morton 12 5.61% 2 8.00%
maxim shchetynin maxim shchetynin 6 2.80% 1 4.00%
martin peschke martin peschke 2 0.93% 1 4.00%
jan glauber jan glauber 1 0.47% 1 4.00%
heiko carstens heiko carstens 1 0.47% 1 4.00%
Total 214 100.00% 25 100.00%



static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req)
{
	struct zfcp_port *port = req->data;

	if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
		return;

	switch (req->qtcb->header.fsf_status) {
	case FSF_PORT_HANDLE_NOT_VALID:
		zfcp_erp_adapter_reopen(port->adapter, 0, "fscph_1");
		req->status |= ZFCP_STATUS_FSFREQ_ERROR;
		break;
	case FSF_ADAPTER_STATUS_AVAILABLE:
		break;
	case FSF_GOOD:
		zfcp_erp_clear_port_status(port, ZFCP_STATUS_COMMON_OPEN);
		break;
	}
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 49 63.64% 4 44.44%
martin schwidefsky martin schwidefsky 20 25.97% 2 22.22%
christof schmitt christof schmitt 5 6.49% 1 11.11%
andrew morton andrew morton 2 2.60% 1 11.11%
martin peschke martin peschke 1 1.30% 1 11.11%
Total 77 100.00% 9 100.00%

/**
 * zfcp_fsf_close_port - create and send close port request
 * @erp_action: pointer to struct zfcp_erp_action
 * Returns: 0 on success, error otherwise
 */


int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action)
{
	struct zfcp_qdio *qdio = erp_action->adapter->qdio;
	struct zfcp_fsf_req *req;
	int retval = -EIO;

	spin_lock_irq(&qdio->req_q_lock);
	if (zfcp_qdio_sbal_get(qdio))
		goto out;

	req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
				  SBAL_SFLAGS0_TYPE_READ,
				  qdio->adapter->pool.erp_req);

	if (IS_ERR(req)) {
		retval = PTR_ERR(req);
		goto out;
	}

	req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
	zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);

	req->handler = zfcp_fsf_close_port_handler;
	req->data = erp_action->port;
	req->erp_action = erp_action;
	req->qtcb->header.port_handle = erp_action->port->handle;
	erp_action->fsf_req_id = req->req_id;

	zfcp_fsf_start_erp_timer(req);
	retval = zfcp_fsf_req_send(req);
	if (retval) {
		zfcp_fsf_req_free(req);
		erp_action->fsf_req_id = 0;
	}
out:
	spin_unlock_irq(&qdio->req_q_lock);
	return retval;
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 86 45.74% 6 35.29%
andrew morton andrew morton 54 28.72% 1 5.88%
martin schwidefsky martin schwidefsky 28 14.89% 1 5.88%
christof schmitt christof schmitt 14 7.45% 7 41.18%
andreas herrmann andreas herrmann 5 2.66% 1 5.88%
jan glauber jan glauber 1 0.53% 1 5.88%
Total 188 100.00% 17 100.00%



static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req)
{
	struct zfcp_fc_wka_port *wka_port = req->data;
	struct fsf_qtcb_header *header = &req->qtcb->header;

	if (req->status & ZFCP_STATUS_FSFREQ_ERROR) {
		wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
		goto out;
	}

	switch (header->fsf_status) {
	case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
		dev_warn(&req->adapter->ccw_device->dev,
			 "Opening WKA port 0x%x failed\n", wka_port->d_id);
		/* fall through */
	case FSF_ADAPTER_STATUS_AVAILABLE:
		req->status |= ZFCP_STATUS_FSFREQ_ERROR;
		wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
		break;
	case FSF_GOOD:
		wka_port->handle = header->port_handle;
		/* fall through */
	case FSF_PORT_ALREADY_OPEN:
		wka_port->status = ZFCP_FC_WKA_PORT_ONLINE;
	}
out:
	wake_up(&wka_port->completion_wq);
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 123 96.09% 2 50.00%
christof schmitt christof schmitt 5 3.91% 2 50.00%
Total 128 100.00% 4 100.00%

/**
 * zfcp_fsf_open_wka_port - create and send open wka-port request
 * @wka_port: pointer to struct zfcp_fc_wka_port
 * Returns: 0 on success, error otherwise
 */


int zfcp_fsf_open_wka_port(struct zfcp_fc_wka_port *wka_port)
{
	struct zfcp_qdio *qdio = wka_port->adapter->qdio;
	struct zfcp_fsf_req *req;
	int retval = -EIO;

	spin_lock_irq(&qdio->req_q_lock);
	if (zfcp_qdio_sbal_get(qdio))
		goto out;

	req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
				  SBAL_SFLAGS0_TYPE_READ,
				  qdio->adapter->pool.erp_req);

	if (IS_ERR(req)) {
		retval = PTR_ERR(req);
		goto out;
	}

	req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
	zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);

	req->handler = zfcp_fsf_open_wka_port_handler;
	hton24(req->qtcb->bottom.support.d_id, wka_port->d_id);
	req->data = wka_port;

	zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
	retval = zfcp_fsf_req_send(req);
	if (retval)
		zfcp_fsf_req_free(req);
out:
	spin_unlock_irq(&qdio->req_q_lock);
	return retval;
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 155 91.72% 5 38.46%
christof schmitt christof schmitt 13 7.69% 7 53.85%
jan glauber jan glauber 1 0.59% 1 7.69%
Total 169 100.00% 13 100.00%



static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req)
{
	struct zfcp_fc_wka_port *wka_port = req->data;

	if (req->qtcb->header.fsf_status == FSF_PORT_HANDLE_NOT_VALID) {
		req->status |= ZFCP_STATUS_FSFREQ_ERROR;
		zfcp_erp_adapter_reopen(wka_port->adapter, 0, "fscwph1");
	}

	wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
	wake_up(&wka_port->completion_wq);
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 63 96.92% 2 66.67%
christof schmitt christof schmitt 2 3.08% 1 33.33%
Total 65 100.00% 3 100.00%

/**
 * zfcp_fsf_close_wka_port - create and send close wka port request
 * @wka_port: WKA port to open
 * Returns: 0 on success, error otherwise
 */


int zfcp_fsf_close_wka_port(struct zfcp_fc_wka_port *wka_port)
{
	struct zfcp_qdio *qdio = wka_port->adapter->qdio;
	struct zfcp_fsf_req *req;
	int retval = -EIO;

	spin_lock_irq(&qdio->req_q_lock);
	if (zfcp_qdio_sbal_get(qdio))
		goto out;

	req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
				  SBAL_SFLAGS0_TYPE_READ,
				  qdio->adapter->pool.erp_req);

	if (IS_ERR(req)) {
		retval = PTR_ERR(req);
		goto out;
	}

	req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
	zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);

	req->handler = zfcp_fsf_close_wka_port_handler;
	req->data = wka_port;
	req->qtcb->header.port_handle = wka_port->handle;

	zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
	retval = zfcp_fsf_req_send(req);
	if (retval)
		zfcp_fsf_req_free(req);
out:
	spin_unlock_irq(&qdio->req_q_lock);
	return retval;
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 148 90.24% 5 38.46%
christof schmitt christof schmitt 9 5.49% 6 46.15%
martin schwidefsky martin schwidefsky 6 3.66% 1 7.69%
jan glauber jan glauber 1 0.61% 1 7.69%
Total 164 100.00% 13 100.00%



static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req)
{
	struct zfcp_port *port = req->data;
	struct fsf_qtcb_header *header = &req->qtcb->header;
	struct scsi_device *sdev;

	if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
		return;

	switch (header->fsf_status) {
	case FSF_PORT_HANDLE_NOT_VALID:
		zfcp_erp_adapter_reopen(port->adapter, 0, "fscpph1");
		req->status |= ZFCP_STATUS_FSFREQ_ERROR;
		break;
	case FSF_PORT_BOXED:
		/* can't use generic zfcp_erp_modify_port_status because
                 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */
		atomic_andnot(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
		shost_for_each_device(sdev, port->adapter->scsi_host)
			if (sdev_to_zfcp(sdev)->port == port)
				atomic_andnot(ZFCP_STATUS_COMMON_OPEN,
						  &sdev_to_zfcp(sdev)->status);
		zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_ACCESS_BOXED);
		zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED,
				     "fscpph2");
		req->status |= ZFCP_STATUS_FSFREQ_ERROR;
		break;
	case FSF_ADAPTER_STATUS_AVAILABLE:
		switch (header->fsf_status_qual.word[0]) {
		case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
			/* fall through */
		case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
			req->status |= ZFCP_STATUS_FSFREQ_ERROR;
			break;
		}
		break;
	case FSF_GOOD:
		/* can't use generic zfcp_erp_modify_port_status because
                 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port
                 */
		atomic_andnot(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
		shost_for_each_device(sdev, port->adapter->scsi_host)
			if (sdev_to_zfcp(sdev)->port == port)
				atomic_andnot(ZFCP_STATUS_COMMON_OPEN,
						  &sdev_to_zfcp(sdev)->status);
		break;
	}
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 91 41.74% 5 45.45%
andrew morton andrew morton 54 24.77% 1 9.09%
christof schmitt christof schmitt 46 21.10% 3 27.27%
martin schwidefsky martin schwidefsky 23 10.55% 1 9.09%
peter zijlstra peter zijlstra 4 1.83% 1 9.09%
Total 218 100.00% 11 100.00%

/**
 * zfcp_fsf_close_physical_port - close physical port
 * @erp_action: pointer to struct zfcp_erp_action
 * Returns: 0 on success
 */


int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action)
{
	struct zfcp_qdio *qdio = erp_action->adapter->qdio;
	struct zfcp_fsf_req *req;
	int retval = -EIO;

	spin_lock_irq(&qdio->req_q_lock);
	if (zfcp_qdio_sbal_get(qdio))
		goto out;

	req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PHYSICAL_PORT,
				  SBAL_SFLAGS0_TYPE_READ,
				  qdio->adapter->pool.erp_req);

	if (IS_ERR(req)) {
		retval = PTR_ERR(req);
		goto out;
	}

	req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
	zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);

	req->data = erp_action->port;
	req->qtcb->header.port_handle = erp_action->port->handle;
	req->erp_action = erp_action;
	req->handler = zfcp_fsf_close_physical_port_handler;
	erp_action->fsf_req_id = req->req_id;

	zfcp_fsf_start_erp_timer(req);
	retval = zfcp_fsf_req_send(req);
	if (retval) {
		zfcp_fsf_req_free(req);
		erp_action->fsf_req_id = 0;
	}
out:
	spin_unlock_irq(&qdio->req_q_lock);
	return retval;
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 106 56.38% 5 27.78%
andrew morton andrew morton 32 17.02% 1 5.56%
christof schmitt christof schmitt 24 12.77% 8 44.44%
martin schwidefsky martin schwidefsky 22 11.70% 2 11.11%
andreas herrmann andreas herrmann 3 1.60% 1 5.56%
jan glauber jan glauber 1 0.53% 1 5.56%
Total 188 100.00% 18 100.00%



static void zfcp_fsf_open_lun_handler(struct zfcp_fsf_req *req)
{
	struct zfcp_adapter *adapter = req->adapter;
	struct scsi_device *sdev = req->data;
	struct zfcp_scsi_dev *zfcp_sdev;
	struct fsf_qtcb_header *header = &req->qtcb->header;
	union fsf_status_qual *qual = &header->fsf_status_qual;

	if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
		return;

	zfcp_sdev = sdev_to_zfcp(sdev);

	atomic_andnot(ZFCP_STATUS_COMMON_ACCESS_DENIED |
			  ZFCP_STATUS_COMMON_ACCESS_BOXED,
			  &zfcp_sdev->status);

	switch (header->fsf_status) {

	case FSF_PORT_HANDLE_NOT_VALID:
		zfcp_erp_adapter_reopen(adapter, 0, "fsouh_1");
		/* fall through */
	case FSF_LUN_ALREADY_OPEN:
		break;
	case FSF_PORT_BOXED:
		zfcp_erp_set_port_status(zfcp_sdev->port,
					 ZFCP_STATUS_COMMON_ACCESS_BOXED);
		zfcp_erp_port_reopen(zfcp_sdev->port,
				     ZFCP_STATUS_COMMON_ERP_FAILED, "fsouh_2");
		req->status |= ZFCP_STATUS_FSFREQ_ERROR;
		break;
	case FSF_LUN_SHARING_VIOLATION:
		if (qual->word[0])
			dev_warn(&zfcp_sdev->port->adapter->ccw_device->dev,
				 "LUN 0x%Lx on port 0x%Lx is already in "
				 "use by CSS%d, MIF Image ID %x\n",
				 zfcp_scsi_dev_lun(sdev),
				 (unsigned long long)zfcp_sdev->port->wwpn,
				 qual->fsf_queue_designator.cssid,
				 qual->fsf_queue_designator.hla);
		zfcp_erp_set_lun_status(sdev,
					ZFCP_STATUS_COMMON_ERP_FAILED |
					ZFCP_STATUS_COMMON_ACCESS_DENIED);
		req->status |= ZFCP_STATUS_FSFREQ_ERROR;
		break;
	case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED:
		dev_warn(&adapter->ccw_device->dev,
			 "No handle is available for LUN "
			 "0x%016Lx on port 0x%016Lx\n",
			 (unsigned long long)zfcp_scsi_dev_lun(sdev),
			 (unsigned long long)zfcp_sdev->port->wwpn);
		zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ERP_FAILED);
		/* fall through */
	case FSF_INVALID_COMMAND_OPTION:
		req->status |= ZFCP_STATUS_FSFREQ_ERROR;
		break;
	case FSF_ADAPTER_STATUS_AVAILABLE:
		switch (header->fsf_status_qual.word[0]) {
		case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
			zfcp_fc_test_link(zfcp_sdev->port);
			/* fall through */
		case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
			req->status |= ZFCP_STATUS_FSFREQ_ERROR;
			break;
		}
		break;

	case FSF_GOOD:
		zfcp_sdev->lun_handle = header->lun_handle;
		atomic_or(ZFCP_STATUS_COMMON_OPEN, &zfcp_sdev->status);
		break;
	}
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 165 50.46% 6 30.00%
martin peschke martin peschke 70 21.41% 3 15.00%
christof schmitt christof schmitt 37 11.31% 5 25.00%
martin schwidefsky martin schwidefsky 32 9.79% 2 10.00%
andrew morton andrew morton 20 6.12% 2 10.00%
peter zijlstra peter zijlstra 2 0.61% 1 5.00%
andreas herrmann andreas herrmann 1 0.31% 1 5.00%
Total 327 100.00% 20 100.00%

/**
 * zfcp_fsf_open_lun - open LUN
 * @erp_action: pointer to struct zfcp_erp_action
 * Returns: 0 on success, error otherwise
 */


int zfcp_fsf_open_lun(struct zfcp_erp_action *erp_action)
{
	struct zfcp_adapter *adapter = erp_action->adapter;
	struct zfcp_qdio *qdio = adapter->qdio;
	struct zfcp_fsf_req *req;
	int retval = -EIO;

	spin_lock_irq(&qdio->req_q_lock);
	if (zfcp_qdio_sbal_get(qdio))
		goto out;

	req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_LUN,
				  SBAL_SFLAGS0_TYPE_READ,
				  adapter->pool.erp_req);

	if (IS_ERR(req)) {
		retval = PTR_ERR(req);
		goto out;
	}

	req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
	zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);

	req->qtcb->header.port_handle = erp_action->port->handle;
	req->qtcb->bottom.support.fcp_lun = zfcp_scsi_dev_lun(erp_action->sdev);
	req->handler = zfcp_fsf_open_lun_handler;
	req->data = erp_action->sdev;
	req->erp_action = erp_action;
	erp_action->fsf_req_id = req->req_id;

	if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE))
		req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING;

	zfcp_fsf_start_erp_timer(req);
	retval = zfcp_fsf_req_send(req);
	if (retval) {
		zfcp_fsf_req_free(req);
		erp_action->fsf_req_id = 0;
	}
out:
	spin_unlock_irq(&qdio->req_q_lock);
	return retval;
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 160 68.67% 5 27.78%
christof schmitt christof schmitt 57 24.46% 10 55.56%
martin schwidefsky martin schwidefsky 12 5.15% 1 5.56%
andrew morton andrew morton 3 1.29% 1 5.56%
jan glauber jan glauber 1 0.43% 1 5.56%
Total 233 100.00% 18 100.00%



static void zfcp_fsf_close_lun_handler(struct zfcp_fsf_req *req)
{
	struct scsi_device *sdev = req->data;
	struct zfcp_scsi_dev *zfcp_sdev;

	if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
		return;

	zfcp_sdev = sdev_to_zfcp(sdev);

	switch (req->qtcb->header.fsf_status) {
	case FSF_PORT_HANDLE_NOT_VALID:
		zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, "fscuh_1");
		req->status |= ZFCP_STATUS_FSFREQ_ERROR;
		break;
	case FSF_LUN_HANDLE_NOT_VALID:
		zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fscuh_2");
		req->status |= ZFCP_STATUS_FSFREQ_ERROR;
		break;
	case FSF_PORT_BOXED:
		zfcp_erp_set_port_status(zfcp_sdev->port,
					 ZFCP_STATUS_COMMON_ACCESS_BOXED);
		zfcp_erp_port_reopen(zfcp_sdev->port,
				     ZFCP_STATUS_COMMON_ERP_FAILED, "fscuh_3");
		req->status |= ZFCP_STATUS_FSFREQ_ERROR;
		break;
	case FSF_ADAPTER_STATUS_AVAILABLE:
		switch (req->qtcb->header.fsf_status_qual.word[0]) {
		case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
			zfcp_fc_test_link(zfcp_sdev->port);
			/* fall through */
		case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
			req->status |= ZFCP_STATUS_FSFREQ_ERROR;
			break;
		}
		break;
	case FSF_GOOD:
		atomic_andnot(ZFCP_STATUS_COMMON_OPEN, &zfcp_sdev->status);
		break;
	}
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 74 40.44% 5 38.46%
christof schmitt christof schmitt 57 31.15% 2 15.38%
andrew morton andrew morton 25 13.66% 1 7.69%
martin schwidefsky martin schwidefsky 18 9.84% 2 15.38%
martin peschke martin peschke 8 4.37% 2 15.38%
peter zijlstra peter zijlstra 1 0.55% 1 7.69%
Total 183 100.00% 13 100.00%

/**
 * zfcp_fsf_close_LUN - close LUN
 * @erp_action: pointer to erp_action triggering the "close LUN"
 * Returns: 0 on success, error otherwise
 */


int zfcp_fsf_close_lun(struct zfcp_erp_action *erp_action)
{
	struct zfcp_qdio *qdio = erp_action->adapter->qdio;
	struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(erp_action->sdev);
	struct zfcp_fsf_req *req;
	int retval = -EIO;

	spin_lock_irq(&qdio->req_q_lock);
	if (zfcp_qdio_sbal_get(qdio))
		goto out;

	req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_LUN,
				  SBAL_SFLAGS0_TYPE_READ,
				  qdio->adapter->pool.erp_req);

	if (IS_ERR(req)) {
		retval = PTR_ERR(req);
		goto out;
	}

	req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
	zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);

	req->qtcb->header.port_handle = erp_action->port->handle;
	req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
	req->handler = zfcp_fsf_close_lun_handler;
	req->data = erp_action->sdev;
	req->erp_action = erp_action;
	erp_action->fsf_req_id = req->req_id;

	zfcp_fsf_start_erp_timer(req);
	retval = zfcp_fsf_req_send(req);
	if (retval) {
		zfcp_fsf_req_free(req);
		erp_action->fsf_req_id = 0;
	}
out:
	spin_unlock_irq(&qdio->req_q_lock);
	return retval;
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 160 75.47% 5 27.78%
christof schmitt christof schmitt 33 15.57% 9 50.00%
andrew morton andrew morton 14 6.60% 1 5.56%
martin schwidefsky martin schwidefsky 3 1.42% 1 5.56%
maxim shchetynin maxim shchetynin 1 0.47% 1 5.56%
jan glauber jan glauber 1 0.47% 1 5.56%
Total 212 100.00% 18 100.00%



static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat)
{
	lat_rec->sum += lat;
	lat_rec->min = min(lat_rec->min, lat);
	lat_rec->max = max(lat_rec->max, lat);
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 34 73.91% 1 33.33%
andrew morton andrew morton 10 21.74% 1 33.33%
martin peschke martin peschke 2 4.35% 1 33.33%
Total 46 100.00% 3 100.00%



static void zfcp_fsf_req_trace(struct zfcp_fsf_req *req, struct scsi_cmnd *scsi)
{
	struct fsf_qual_latency_info *lat_in;
	struct latency_cont *lat = NULL;
	struct zfcp_scsi_dev *zfcp_sdev;
	struct zfcp_blk_drv_data blktrc;
	int ticks = req->adapter->timer_ticks;

	lat_in = &req->qtcb->prefix.prot_status_qual.latency_info;

	blktrc.flags = 0;
	blktrc.magic = ZFCP_BLK_DRV_DATA_MAGIC;
	if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
		blktrc.flags |= ZFCP_BLK_REQ_ERROR;
	blktrc.inb_usage = 0;
	blktrc.outb_usage = req->qdio_req.qdio_outb_usage;

	if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA &&
	    !(req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
		zfcp_sdev = sdev_to_zfcp(scsi->device);
		blktrc.flags |= ZFCP_BLK_LAT_VALID;
		blktrc.channel_lat = lat_in->channel_lat * ticks;
		blktrc.fabric_lat = lat_in->fabric_lat * ticks;

		switch (req->qtcb->bottom.io.data_direction) {
		case FSF_DATADIR_DIF_READ_STRIP:
		case FSF_DATADIR_DIF_READ_CONVERT:
		case FSF_DATADIR_READ:
			lat = &zfcp_sdev->latencies.read;
			break;
		case FSF_DATADIR_DIF_WRITE_INSERT:
		case FSF_DATADIR_DIF_WRITE_CONVERT:
		case FSF_DATADIR_WRITE:
			lat = &zfcp_sdev->latencies.write;
			break;
		case FSF_DATADIR_CMND:
			lat = &zfcp_sdev->latencies.cmd;
			break;
		}

		if (lat) {
			spin_lock(&zfcp_sdev->latencies.lock);
			zfcp_fsf_update_lat(&lat->channel, lat_in->channel_lat);
			zfcp_fsf_update_lat(&lat->fabric, lat_in->fabric_lat);
			lat->counter++;
			spin_unlock(&zfcp_sdev->latencies.lock);
		}
	}

	blk_add_driver_data(scsi->request->q, scsi->request, &blktrc,
			    sizeof(blktrc));
}

Contributors
Person Tokens Prop Commits CommitProp
christof schmitt christof schmitt 134 44.97% 5 38.46%
swen schillig swen schillig 94 31.54% 2 15.38%
andrew morton andrew morton 27 9.06% 1 7.69%
stefan raspl stefan raspl 15 5.03% 1 7.69%
felix beck felix beck 12 4.03% 1 7.69%
martin peschke martin peschke 9 3.02% 1 7.69%
andreas herrmann andreas herrmann 7 2.35% 2 15.38%
Total 298 100.00% 13 100.00%



static void zfcp_fsf_fcp_handler_common(struct zfcp_fsf_req *req)
{
	struct scsi_cmnd *scmnd = req->data;
	struct scsi_device *sdev = scmnd->device;
	struct zfcp_scsi_dev *zfcp_sdev;
	struct fsf_qtcb_header *header = &req->qtcb->header;

	if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
		return;

	zfcp_sdev = sdev_to_zfcp(sdev);

	switch (header->fsf_status) {
	case FSF_HANDLE_MISMATCH:
	case FSF_PORT_HANDLE_NOT_VALID:
		zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, "fssfch1");
		req->status |= ZFCP_STATUS_FSFREQ_ERROR;
		break;
	case FSF_FCPLUN_NOT_VALID:
	case FSF_LUN_HANDLE_NOT_VALID:
		zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fssfch2");
		req->status |= ZFCP_STATUS_FSFREQ_ERROR;
		break;
	case FSF_SERVICE_CLASS_NOT_SUPPORTED:
		zfcp_fsf_class_not_supp(req);
		break;
	case FSF_DIRECTION_INDICATOR_NOT_VALID:
		dev_err(&req->adapter->ccw_device->dev,
			"Incorrect direction %d, LUN 0x%016Lx on port "
			"0x%016Lx closed\n",
			req->qtcb->bottom.io.data_direction,
			(unsigned long long)zfcp_scsi_dev_lun(sdev),
			(unsigned long long)zfcp_sdev->port->wwpn);
		zfcp_erp_adapter_shutdown(zfcp_sdev->port->adapter, 0,
					  "fssfch3");
		req->status |= ZFCP_STATUS_FSFREQ_ERROR;
		break;
	case FSF_CMND_LENGTH_NOT_VALID:
		dev_err(&req->adapter->ccw_device->dev,
			"Incorrect CDB length %d, LUN 0x%016Lx on "
			"port 0x%016Lx closed\n",
			req->qtcb->bottom.io.fcp_cmnd_length,
			(unsigned long long)zfcp_scsi_dev_lun(sdev),
			(unsigned long long)zfcp_sdev->port->wwpn);
		zfcp_erp_adapter_shutdown(zfcp_sdev->port->adapter, 0,
					  "fssfch4");
		req->status |= ZFCP_STATUS_FSFREQ_ERROR;
		break;
	case FSF_PORT_BOXED:
		zfcp_erp_set_port_status(zfcp_sdev->port,
					 ZFCP_STATUS_COMMON_ACCESS_BOXED);
		zfcp_erp_port_reopen(zfcp_sdev->port,
				     ZFCP_STATUS_COMMON_ERP_FAILED, "fssfch5");
		req->status |= ZFCP_STATUS_FSFREQ_ERROR;
		break;
	case FSF_LUN_BOXED:
		zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ACCESS_BOXED);
		zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
				    "fssfch6");
		req->status |= ZFCP_STATUS_FSFREQ_ERROR;
		break;
	case FSF_ADAPTER_STATUS_AVAILABLE:
		if (header->fsf_status_qual.word[0] ==
		    FSF_SQ_INVOKE_LINK_TEST_PROCEDURE)
			zfcp_fc_test_link(zfcp_sdev->port);
		req->status |= ZFCP_STATUS_FSFREQ_ERROR;
		break;
	}
}

Contributors
Person Tokens Prop Commits CommitProp
christof schmitt christof schmitt 179 50.28% 2 18.18%
swen schillig swen schillig 138 38.76% 4 36.36%
maxim shchetynin maxim shchetynin 18 5.06% 2 18.18%
andrew morton andrew morton 13 3.65% 1 9.09%
martin peschke martin peschke 7 1.97% 1 9.09%
james bottomley james bottomley 1 0.28% 1 9.09%
Total 356 100.00% 11 100.00%



static void zfcp_fsf_fcp_cmnd_handler(struct zfcp_fsf_req *req)
{
	struct scsi_cmnd *scpnt;
	struct fcp_resp_with_ext *fcp_rsp;
	unsigned long flags;

	read_lock_irqsave(&req->adapter->abort_lock, flags);

	scpnt = req->data;
	if (unlikely(!scpnt)) {
		read_unlock_irqrestore(&req->adapter->abort_lock, flags);
		return;
	}

	zfcp_fsf_fcp_handler_common(req);

	if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
		set_host_byte(scpnt, DID_TRANSPORT_DISRUPTED);
		goto skip_fsfstatus;
	}

	switch (req->qtcb->header.fsf_status) {
	case FSF_INCONSISTENT_PROT_DATA:
	case FSF_INVALID_PROT_PARM:
		set_host_byte(scpnt, DID_ERROR);
		goto skip_fsfstatus;
	case FSF_BLOCK_GUARD_CHECK_FAILURE:
		zfcp_scsi_dif_sense_error(scpnt, 0x1);
		goto skip_fsfstatus;
	case FSF_APP_TAG_CHECK_FAILURE:
		zfcp_scsi_dif_sense_error(scpnt, 0x2);
		goto skip_fsfstatus;
	case FSF_REF_TAG_CHECK_FAILURE:
		zfcp_scsi_dif_sense_error(scpnt, 0x3);
		goto skip_fsfstatus;
	}
	fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp;
	zfcp_fc_eval_fcp_rsp(fcp_rsp, scpnt);

skip_fsfstatus:
	zfcp_fsf_req_trace(req, scpnt);
	zfcp_dbf_scsi_result(scpnt, req);

	scpnt->host_scribble = NULL;
	(scpnt->scsi_done) (scpnt);
	/*
         * We must hold this lock until scsi_done has been called.
         * Otherwise we may call scsi_done after abort regarding this
         * command has completed.
         * Note: scsi_done must not block!
         */
	read_unlock_irqrestore(&req->adapter->abort_lock, flags);
}

Contributors
Person Tokens Prop Commits CommitProp
christof schmitt christof schmitt 189 82.17% 1 25.00%
swen schillig swen schillig 31 13.48% 2 50.00%
andrew morton andrew morton 10 4.35% 1 25.00%
Total 230 100.00% 4 100.00%



static int zfcp_fsf_set_data_dir(struct scsi_cmnd *scsi_cmnd, u32 *data_dir)
{
	switch (scsi_get_prot_op(scsi_cmnd)) {
	case SCSI_PROT_NORMAL:
		switch (scsi_cmnd->sc_data_direction) {
		case DMA_NONE:
			*data_dir = FSF_DATADIR_CMND;
			break;
		case DMA_FROM_DEVICE:
			*data_dir = FSF_DATADIR_READ;
			break;
		case DMA_TO_DEVICE:
			*data_dir = FSF_DATADIR_WRITE;
			break;
		case DMA_BIDIRECTIONAL:
			return -EINVAL;
		}
		break;

	case SCSI_PROT_READ_STRIP:
		*data_dir = FSF_DATADIR_DIF_READ_STRIP;
		break;
	case SCSI_PROT_WRITE_INSERT:
		*data_dir = FSF_DATADIR_DIF_WRITE_INSERT;
		break;
	case SCSI_PROT_READ_PASS:
		*data_dir = FSF_DATADIR_DIF_READ_CONVERT;
		break;
	case SCSI_PROT_WRITE_PASS:
		*data_dir = FSF_DATADIR_DIF_WRITE_CONVERT;
		break;
	default:
		return -EINVAL;
	}

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
felix beck felix beck 114 100.00% 1 100.00%
Total 114 100.00% 1 100.00%

/**
 * zfcp_fsf_fcp_cmnd - initiate an FCP command (for a SCSI command)
 * @scsi_cmnd: scsi command to be sent
 */


int zfcp_fsf_fcp_cmnd(struct scsi_cmnd *scsi_cmnd)
{
	struct zfcp_fsf_req *req;
	struct fcp_cmnd *fcp_cmnd;
	u8 sbtype = SBAL_SFLAGS0_TYPE_READ;
	int retval = -EIO;
	struct scsi_device *sdev = scsi_cmnd->device;
	struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
	struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
	struct zfcp_qdio *qdio = adapter->qdio;
	struct fsf_qtcb_bottom_io *io;
	unsigned long flags;

	if (unlikely(!(atomic_read(&zfcp_sdev->status) &
		       ZFCP_STATUS_COMMON_UNBLOCKED)))
		return -EBUSY;

	spin_lock_irqsave(&qdio->req_q_lock, flags);
	if (atomic_read(&qdio->req_q_free) <= 0) {
		atomic_inc(&qdio->req_q_full);
		goto out;
	}

	if (scsi_cmnd->sc_data_direction == DMA_TO_DEVICE)
		sbtype = SBAL_SFLAGS0_TYPE_WRITE;

	req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND,
				  sbtype, adapter->pool.scsi_req);

	if (IS_ERR(req)) {
		retval = PTR_ERR(req);
		goto out;
	}

	scsi_cmnd->host_scribble = (unsigned char *) req->req_id;

	io = &req->qtcb->bottom.io;
	req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
	req->data = scsi_cmnd;
	req->handler = zfcp_fsf_fcp_cmnd_handler;
	req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
	req->qtcb->header.port_handle = zfcp_sdev->port->handle;
	io->service_class = FSF_CLASS_3;
	io->fcp_cmnd_length = FCP_CMND_LEN;

	if (scsi_get_prot_op(scsi_cmnd) != SCSI_PROT_NORMAL) {
		io->data_block_length = scsi_cmnd->device->sector_size;
		io->ref_tag_value = scsi_get_lba(scsi_cmnd) & 0xFFFFFFFF;
	}

	if (zfcp_fsf_set_data_dir(scsi_cmnd, &io->data_direction))
		goto failed_scsi_cmnd;

	fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
	zfcp_fc_scsi_to_fcp(fcp_cmnd, scsi_cmnd, 0);

	if (scsi_prot_sg_count(scsi_cmnd)) {
		zfcp_qdio_set_data_div(qdio, &req->qdio_req,
				       scsi_prot_sg_count(scsi_cmnd));
		retval = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req,
						 scsi_prot_sglist(scsi_cmnd));
		if (retval)
			goto failed_scsi_cmnd;
		io->prot_data_length = zfcp_qdio_real_bytes(
						scsi_prot_sglist(scsi_cmnd));
	}

	retval = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req,
					 scsi_sglist(scsi_cmnd));
	if (unlikely(retval))
		goto failed_scsi_cmnd;

	zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req);
	if (zfcp_adapter_multi_buffer_active(adapter))
		zfcp_qdio_set_scount(qdio, &req->qdio_req);

	retval = zfcp_fsf_req_send(req);
	if (unlikely(retval))
		goto failed_scsi_cmnd;

	goto out;

failed_scsi_cmnd:
	zfcp_fsf_req_free(req);
	scsi_cmnd->host_scribble = NULL;
out:
	spin_unlock_irqrestore(&qdio->req_q_lock, flags);
	return retval;
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 197 39.24% 7 25.00%
felix beck felix beck 117 23.31% 1 3.57%
christof schmitt christof schmitt 98 19.52% 12 42.86%
andrew morton andrew morton 57 11.35% 3 10.71%
martin schwidefsky martin schwidefsky 13 2.59% 1 3.57%
andreas herrmann andreas herrmann 8 1.59% 1 3.57%
steffen maier steffen maier 6 1.20% 1 3.57%
maxim shchetynin maxim shchetynin 3 0.60% 1 3.57%
jan glauber jan glauber 3 0.60% 1 3.57%
Total 502 100.00% 28 100.00%



static void zfcp_fsf_fcp_task_mgmt_handler(struct zfcp_fsf_req *req)
{
	struct fcp_resp_with_ext *fcp_rsp;
	struct fcp_resp_rsp_info *rsp_info;

	zfcp_fsf_fcp_handler_common(req);

	fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp;
	rsp_info = (struct fcp_resp_rsp_info *) &fcp_rsp[1];

	if ((rsp_info->rsp_code != FCP_TMF_CMPL) ||
	     (req->status & ZFCP_STATUS_FSFREQ_ERROR))
		req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED;
}

Contributors
Person Tokens Prop Commits CommitProp
christof schmitt christof schmitt 81 100.00% 1 100.00%
Total 81 100.00% 1 100.00%

/**
 * zfcp_fsf_fcp_task_mgmt - send SCSI task management command
 * @scmnd: SCSI command to send the task management command for
 * @tm_flags: unsigned byte for task management flags
 * Returns: on success pointer to struct fsf_req, NULL otherwise
 */


struct zfcp_fsf_req *zfcp_fsf_fcp_task_mgmt(struct scsi_cmnd *scmnd,
					    u8 tm_flags)
{
	struct zfcp_fsf_req *req = NULL;
	struct fcp_cmnd *fcp_cmnd;
	struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scmnd->device);
	struct zfcp_qdio *qdio = zfcp_sdev->port->adapter->qdio;

	if (unlikely(!(atomic_read(&zfcp_sdev->status) &
		       ZFCP_STATUS_COMMON_UNBLOCKED)))
		return NULL;

	spin_lock_irq(&qdio->req_q_lock);
	if (zfcp_qdio_sbal_get(qdio))
		goto out;

	req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND,
				  SBAL_SFLAGS0_TYPE_WRITE,
				  qdio->adapter->pool.scsi_req);

	if (IS_ERR(req)) {
		req = NULL;
		goto out;
	}

	req->data = scmnd;
	req->handler = zfcp_fsf_fcp_task_mgmt_handler;
	req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
	req->qtcb->header.port_handle = zfcp_sdev->port->handle;
	req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
	req->qtcb->bottom.io.service_class = FSF_CLASS_3;
	req->qtcb->bottom.io.fcp_cmnd_length = FCP_CMND_LEN;

	zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);

	fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
	zfcp_fc_scsi_to_fcp(fcp_cmnd, scmnd, tm_flags);

	zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
	if (!zfcp_fsf_req_send(req))
		goto out;

	zfcp_fsf_req_free(req);
	req = NULL;
out:
	spin_unlock_irq(&qdio->req_q_lock);
	return req;
}

Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 125 45.13% 5 20.00%
christof schmitt christof schmitt 54 19.49% 12 48.00%
martin schwidefsky martin schwidefsky 43 15.52% 3 12.00%
andrew morton andrew morton 38 13.72% 1 4.00%
maxim shchetynin maxim shchetynin 7 2.53% 1 4.00%
andreas herrmann andreas herrmann 5 1.81% 1 4.00%
volker sameske volker sameske 4 1.44% 1 4.00%
jan glauber jan glauber 1 0.36% 1 4.00%
Total 277 100.00% 25 100.00%

/**
 * zfcp_fsf_reqid_check - validate req_id contained in SBAL returned by QDIO
 * @adapter: pointer to struct zfcp_adapter
 * @sbal_idx: response queue index of SBAL to be processed
 */


void zfcp_fsf_reqid_check(struct zfcp_qdio *qdio, int sbal_idx)
{
	struct zfcp_adapter *adapter = qdio->adapter;
	struct qdio_buffer *sbal = qdio->res_q[sbal_idx];
	struct qdio_buffer_element *sbale;
	struct zfcp_fsf_req *fsf_req;
	unsigned long req_id;
	int idx;

	for (idx = 0; idx < QDIO_MAX_ELEMENTS_PER_BUFFER; idx++) {

		sbale = &sbal->element[idx];
		req_id = (unsigned long) sbale->addr;
		fsf_req = zfcp_reqlist_find_rm(adapter->req_list, req_id);

		if (!fsf_req) {
			/*
                         * Unknown request means that we have potentially memory
                         * corruption and must stop the machine immediately.
                         */
			zfcp_qdio_siosl(adapter);
			panic("error: unknown req_id (%lx) on adapter %s.\n",
			      req_id, dev_name(&adapter->ccw_device->dev));
		}

		fsf_req->qdio_req.sbal_response = sbal_idx;
		zfcp_fsf_req_complete(fsf_req);

		if (likely(sbale->eflags & SBAL_EFLAGS_LAST_ENTRY))
			break;
	}
}
Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 139 91.45% 4 50.00%
christof schmitt christof schmitt 11 7.24% 3 37.50%
jan glauber jan glauber 2 1.32% 1 12.50%
Total 152 100.00% 8 100.00%

Overall Contributors
Person Tokens Prop Commits CommitProp
swen schillig swen schillig 5809 53.87% 35 23.18%
christof schmitt christof schmitt 2224 20.63% 63 41.72%
martin schwidefsky martin schwidefsky 1007 9.34% 7 4.64%
andrew morton andrew morton 716 6.64% 4 2.65%
felix beck felix beck 263 2.44% 1 0.66%
steffen maier steffen maier 190 1.76% 5 3.31%
maxim shchetynin maxim shchetynin 173 1.60% 5 3.31%
martin peschke martin peschke 135 1.25% 6 3.97%
andreas herrmann andreas herrmann 123 1.14% 9 5.96%
martin petermann martin petermann 38 0.35% 2 1.32%
stefan raspl stefan raspl 28 0.26% 1 0.66%
jan glauber jan glauber 21 0.19% 1 0.66%
sven schuetz sven schuetz 18 0.17% 1 0.66%
peter zijlstra peter zijlstra 13 0.12% 1 0.66%
daniel hansel daniel hansel 10 0.09% 1 0.66%
volker sameske volker sameske 5 0.05% 1 0.66%
heiko carstens heiko carstens 4 0.04% 4 2.65%
tejun heo tejun heo 3 0.03% 1 0.66%
ralph wuerthner ralph wuerthner 1 0.01% 1 0.66%
lucas de marchi lucas de marchi 1 0.01% 1 0.66%
james bottomley james bottomley 1 0.01% 1 0.66%
Total 10783 100.00% 151 100.00%
  Directory: drivers/s390/scsi

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
	Person	Tokens	Prop	Commits	CommitProp
christof schmitt	christof schmitt	35	97.22%	2	66.67%
swen schillig	swen schillig	1	2.78%	1	33.33%
	Total	36	100.00%	3	100.00%
cregit-Linux how code gets into the kernel

Release 4.7 drivers/s390/scsi/zfcp_fsf.c

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