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2760 lines
78 KiB
2760 lines
78 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* zfcp device driver |
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* |
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* Implementation of FSF commands. |
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* |
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* Copyright IBM Corp. 2002, 2020 |
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*/ |
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|
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#define KMSG_COMPONENT "zfcp" |
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#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt |
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|
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#include <linux/blktrace_api.h> |
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#include <linux/jiffies.h> |
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#include <linux/types.h> |
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#include <linux/slab.h> |
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#include <scsi/fc/fc_els.h> |
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#include "zfcp_ext.h" |
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#include "zfcp_fc.h" |
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#include "zfcp_dbf.h" |
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#include "zfcp_qdio.h" |
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#include "zfcp_reqlist.h" |
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#include "zfcp_diag.h" |
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|
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/* timeout for FSF requests sent during scsi_eh: abort or FCP TMF */ |
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#define ZFCP_FSF_SCSI_ER_TIMEOUT (10*HZ) |
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/* timeout for: exchange config/port data outside ERP, or open/close WKA port */ |
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#define ZFCP_FSF_REQUEST_TIMEOUT (60*HZ) |
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struct kmem_cache *zfcp_fsf_qtcb_cache; |
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|
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static bool ber_stop = true; |
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module_param(ber_stop, bool, 0600); |
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MODULE_PARM_DESC(ber_stop, |
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"Shuts down FCP devices for FCP channels that report a bit-error count in excess of its threshold (default on)"); |
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|
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static void zfcp_fsf_request_timeout_handler(struct timer_list *t) |
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{ |
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struct zfcp_fsf_req *fsf_req = from_timer(fsf_req, t, timer); |
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struct zfcp_adapter *adapter = fsf_req->adapter; |
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|
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zfcp_qdio_siosl(adapter); |
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zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED, |
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"fsrth_1"); |
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} |
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static void zfcp_fsf_start_timer(struct zfcp_fsf_req *fsf_req, |
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unsigned long timeout) |
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{ |
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fsf_req->timer.function = zfcp_fsf_request_timeout_handler; |
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fsf_req->timer.expires = jiffies + timeout; |
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add_timer(&fsf_req->timer); |
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} |
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|
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static void zfcp_fsf_start_erp_timer(struct zfcp_fsf_req *fsf_req) |
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{ |
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BUG_ON(!fsf_req->erp_action); |
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fsf_req->timer.function = zfcp_erp_timeout_handler; |
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fsf_req->timer.expires = jiffies + 30 * HZ; |
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add_timer(&fsf_req->timer); |
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} |
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/* association between FSF command and FSF QTCB type */ |
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static u32 fsf_qtcb_type[] = { |
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[FSF_QTCB_FCP_CMND] = FSF_IO_COMMAND, |
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[FSF_QTCB_ABORT_FCP_CMND] = FSF_SUPPORT_COMMAND, |
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[FSF_QTCB_OPEN_PORT_WITH_DID] = FSF_SUPPORT_COMMAND, |
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[FSF_QTCB_OPEN_LUN] = FSF_SUPPORT_COMMAND, |
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[FSF_QTCB_CLOSE_LUN] = FSF_SUPPORT_COMMAND, |
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[FSF_QTCB_CLOSE_PORT] = FSF_SUPPORT_COMMAND, |
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[FSF_QTCB_CLOSE_PHYSICAL_PORT] = FSF_SUPPORT_COMMAND, |
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[FSF_QTCB_SEND_ELS] = FSF_SUPPORT_COMMAND, |
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[FSF_QTCB_SEND_GENERIC] = FSF_SUPPORT_COMMAND, |
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[FSF_QTCB_EXCHANGE_CONFIG_DATA] = FSF_CONFIG_COMMAND, |
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[FSF_QTCB_EXCHANGE_PORT_DATA] = FSF_PORT_COMMAND, |
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[FSF_QTCB_DOWNLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND, |
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[FSF_QTCB_UPLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND |
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}; |
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static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req *req) |
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{ |
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dev_err(&req->adapter->ccw_device->dev, "FCP device not " |
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"operational because of an unsupported FC class\n"); |
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zfcp_erp_adapter_shutdown(req->adapter, 0, "fscns_1"); |
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req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
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} |
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|
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/** |
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* zfcp_fsf_req_free - free memory used by fsf request |
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* @req: pointer to struct zfcp_fsf_req |
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*/ |
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void zfcp_fsf_req_free(struct zfcp_fsf_req *req) |
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{ |
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if (likely(req->pool)) { |
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if (likely(!zfcp_fsf_req_is_status_read_buffer(req))) |
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mempool_free(req->qtcb, req->adapter->pool.qtcb_pool); |
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mempool_free(req, req->pool); |
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return; |
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} |
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|
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if (likely(!zfcp_fsf_req_is_status_read_buffer(req))) |
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kmem_cache_free(zfcp_fsf_qtcb_cache, req->qtcb); |
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kfree(req); |
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} |
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static void zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *req) |
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{ |
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unsigned long flags; |
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struct fsf_status_read_buffer *sr_buf = req->data; |
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struct zfcp_adapter *adapter = req->adapter; |
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struct zfcp_port *port; |
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int d_id = ntoh24(sr_buf->d_id); |
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read_lock_irqsave(&adapter->port_list_lock, flags); |
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list_for_each_entry(port, &adapter->port_list, list) |
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if (port->d_id == d_id) { |
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zfcp_erp_port_reopen(port, 0, "fssrpc1"); |
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break; |
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} |
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read_unlock_irqrestore(&adapter->port_list_lock, flags); |
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} |
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void zfcp_fsf_fc_host_link_down(struct zfcp_adapter *adapter) |
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{ |
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struct Scsi_Host *shost = adapter->scsi_host; |
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|
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adapter->hydra_version = 0; |
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adapter->peer_wwpn = 0; |
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adapter->peer_wwnn = 0; |
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adapter->peer_d_id = 0; |
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/* if there is no shost yet, we have nothing to zero-out */ |
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if (shost == NULL) |
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return; |
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fc_host_port_id(shost) = 0; |
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fc_host_fabric_name(shost) = 0; |
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fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; |
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fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN; |
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snprintf(fc_host_model(shost), FC_SYMBOLIC_NAME_SIZE, "0x%04x", 0); |
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memset(fc_host_active_fc4s(shost), 0, FC_FC4_LIST_SIZE); |
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} |
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static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *req, |
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struct fsf_link_down_info *link_down) |
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{ |
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struct zfcp_adapter *adapter = req->adapter; |
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if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED) |
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return; |
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atomic_or(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status); |
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zfcp_scsi_schedule_rports_block(adapter); |
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zfcp_fsf_fc_host_link_down(adapter); |
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if (!link_down) |
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goto out; |
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switch (link_down->error_code) { |
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case FSF_PSQ_LINK_NO_LIGHT: |
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dev_warn(&req->adapter->ccw_device->dev, |
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"There is no light signal from the local " |
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"fibre channel cable\n"); |
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break; |
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case FSF_PSQ_LINK_WRAP_PLUG: |
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dev_warn(&req->adapter->ccw_device->dev, |
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"There is a wrap plug instead of a fibre " |
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"channel cable\n"); |
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break; |
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case FSF_PSQ_LINK_NO_FCP: |
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dev_warn(&req->adapter->ccw_device->dev, |
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"The adjacent fibre channel node does not " |
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"support FCP\n"); |
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break; |
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case FSF_PSQ_LINK_FIRMWARE_UPDATE: |
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dev_warn(&req->adapter->ccw_device->dev, |
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"The FCP device is suspended because of a " |
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"firmware update\n"); |
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break; |
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case FSF_PSQ_LINK_INVALID_WWPN: |
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dev_warn(&req->adapter->ccw_device->dev, |
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"The FCP device detected a WWPN that is " |
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"duplicate or not valid\n"); |
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break; |
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case FSF_PSQ_LINK_NO_NPIV_SUPPORT: |
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dev_warn(&req->adapter->ccw_device->dev, |
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"The fibre channel fabric does not support NPIV\n"); |
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break; |
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case FSF_PSQ_LINK_NO_FCP_RESOURCES: |
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dev_warn(&req->adapter->ccw_device->dev, |
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"The FCP adapter cannot support more NPIV ports\n"); |
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break; |
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case FSF_PSQ_LINK_NO_FABRIC_RESOURCES: |
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dev_warn(&req->adapter->ccw_device->dev, |
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"The adjacent switch cannot support " |
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"more NPIV ports\n"); |
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break; |
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case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE: |
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dev_warn(&req->adapter->ccw_device->dev, |
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"The FCP adapter could not log in to the " |
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"fibre channel fabric\n"); |
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break; |
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case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED: |
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dev_warn(&req->adapter->ccw_device->dev, |
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"The WWPN assignment file on the FCP adapter " |
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"has been damaged\n"); |
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break; |
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case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED: |
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dev_warn(&req->adapter->ccw_device->dev, |
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"The mode table on the FCP adapter " |
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"has been damaged\n"); |
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break; |
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case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT: |
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dev_warn(&req->adapter->ccw_device->dev, |
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"All NPIV ports on the FCP adapter have " |
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"been assigned\n"); |
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break; |
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default: |
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dev_warn(&req->adapter->ccw_device->dev, |
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"The link between the FCP adapter and " |
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"the FC fabric is down\n"); |
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} |
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out: |
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zfcp_erp_set_adapter_status(adapter, ZFCP_STATUS_COMMON_ERP_FAILED); |
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} |
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static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req *req) |
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{ |
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struct fsf_status_read_buffer *sr_buf = req->data; |
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struct fsf_link_down_info *ldi = |
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(struct fsf_link_down_info *) &sr_buf->payload; |
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|
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switch (sr_buf->status_subtype) { |
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case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK: |
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case FSF_STATUS_READ_SUB_FDISC_FAILED: |
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zfcp_fsf_link_down_info_eval(req, ldi); |
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break; |
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case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE: |
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zfcp_fsf_link_down_info_eval(req, NULL); |
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} |
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} |
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static void |
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zfcp_fsf_status_read_version_change(struct zfcp_adapter *adapter, |
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struct fsf_status_read_buffer *sr_buf) |
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{ |
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if (sr_buf->status_subtype == FSF_STATUS_READ_SUB_LIC_CHANGE) { |
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u32 version = sr_buf->payload.version_change.current_version; |
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WRITE_ONCE(adapter->fsf_lic_version, version); |
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snprintf(fc_host_firmware_version(adapter->scsi_host), |
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FC_VERSION_STRING_SIZE, "%#08x", version); |
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} |
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} |
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static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req) |
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{ |
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struct zfcp_adapter *adapter = req->adapter; |
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struct fsf_status_read_buffer *sr_buf = req->data; |
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|
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if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { |
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zfcp_dbf_hba_fsf_uss("fssrh_1", req); |
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mempool_free(virt_to_page(sr_buf), adapter->pool.sr_data); |
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zfcp_fsf_req_free(req); |
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return; |
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} |
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zfcp_dbf_hba_fsf_uss("fssrh_4", req); |
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|
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switch (sr_buf->status_type) { |
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case FSF_STATUS_READ_PORT_CLOSED: |
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zfcp_fsf_status_read_port_closed(req); |
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break; |
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case FSF_STATUS_READ_INCOMING_ELS: |
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zfcp_fc_incoming_els(req); |
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break; |
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case FSF_STATUS_READ_SENSE_DATA_AVAIL: |
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break; |
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case FSF_STATUS_READ_BIT_ERROR_THRESHOLD: |
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zfcp_dbf_hba_bit_err("fssrh_3", req); |
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if (ber_stop) { |
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dev_warn(&adapter->ccw_device->dev, |
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"All paths over this FCP device are disused because of excessive bit errors\n"); |
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zfcp_erp_adapter_shutdown(adapter, 0, "fssrh_b"); |
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} else { |
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dev_warn(&adapter->ccw_device->dev, |
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"The error threshold for checksum statistics has been exceeded\n"); |
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} |
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break; |
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case FSF_STATUS_READ_LINK_DOWN: |
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zfcp_fsf_status_read_link_down(req); |
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zfcp_fc_enqueue_event(adapter, FCH_EVT_LINKDOWN, 0); |
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break; |
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case FSF_STATUS_READ_LINK_UP: |
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dev_info(&adapter->ccw_device->dev, |
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"The local link has been restored\n"); |
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/* All ports should be marked as ready to run again */ |
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zfcp_erp_set_adapter_status(adapter, |
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ZFCP_STATUS_COMMON_RUNNING); |
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zfcp_erp_adapter_reopen(adapter, |
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ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | |
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ZFCP_STATUS_COMMON_ERP_FAILED, |
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"fssrh_2"); |
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zfcp_fc_enqueue_event(adapter, FCH_EVT_LINKUP, 0); |
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|
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break; |
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case FSF_STATUS_READ_NOTIFICATION_LOST: |
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if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_INCOMING_ELS) |
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zfcp_fc_conditional_port_scan(adapter); |
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if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_VERSION_CHANGE) |
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queue_work(adapter->work_queue, |
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&adapter->version_change_lost_work); |
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break; |
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case FSF_STATUS_READ_FEATURE_UPDATE_ALERT: |
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adapter->adapter_features = sr_buf->payload.word[0]; |
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break; |
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case FSF_STATUS_READ_VERSION_CHANGE: |
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zfcp_fsf_status_read_version_change(adapter, sr_buf); |
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break; |
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} |
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|
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mempool_free(virt_to_page(sr_buf), adapter->pool.sr_data); |
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zfcp_fsf_req_free(req); |
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|
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atomic_inc(&adapter->stat_miss); |
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queue_work(adapter->work_queue, &adapter->stat_work); |
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} |
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|
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static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req) |
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{ |
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switch (req->qtcb->header.fsf_status_qual.word[0]) { |
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case FSF_SQ_FCP_RSP_AVAILABLE: |
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case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
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case FSF_SQ_NO_RETRY_POSSIBLE: |
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case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
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return; |
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case FSF_SQ_COMMAND_ABORTED: |
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break; |
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case FSF_SQ_NO_RECOM: |
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dev_err(&req->adapter->ccw_device->dev, |
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"The FCP adapter reported a problem " |
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"that cannot be recovered\n"); |
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zfcp_qdio_siosl(req->adapter); |
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zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfsqe1"); |
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break; |
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} |
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/* all non-return stats set FSFREQ_ERROR*/ |
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req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
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} |
|
|
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static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *req) |
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{ |
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if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) |
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return; |
|
|
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switch (req->qtcb->header.fsf_status) { |
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case FSF_UNKNOWN_COMMAND: |
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dev_err(&req->adapter->ccw_device->dev, |
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"The FCP adapter does not recognize the command 0x%x\n", |
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req->qtcb->header.fsf_command); |
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zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfse_1"); |
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req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
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break; |
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case FSF_ADAPTER_STATUS_AVAILABLE: |
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zfcp_fsf_fsfstatus_qual_eval(req); |
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break; |
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} |
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} |
|
|
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static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req) |
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{ |
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struct zfcp_adapter *adapter = req->adapter; |
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struct fsf_qtcb *qtcb = req->qtcb; |
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union fsf_prot_status_qual *psq = &qtcb->prefix.prot_status_qual; |
|
|
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zfcp_dbf_hba_fsf_response(req); |
|
|
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if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { |
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req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
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return; |
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} |
|
|
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switch (qtcb->prefix.prot_status) { |
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case FSF_PROT_GOOD: |
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case FSF_PROT_FSF_STATUS_PRESENTED: |
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return; |
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case FSF_PROT_QTCB_VERSION_ERROR: |
|
dev_err(&adapter->ccw_device->dev, |
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"QTCB version 0x%x not supported by FCP adapter " |
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"(0x%x to 0x%x)\n", FSF_QTCB_CURRENT_VERSION, |
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psq->word[0], psq->word[1]); |
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zfcp_erp_adapter_shutdown(adapter, 0, "fspse_1"); |
|
break; |
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case FSF_PROT_ERROR_STATE: |
|
case FSF_PROT_SEQ_NUMB_ERROR: |
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zfcp_erp_adapter_reopen(adapter, 0, "fspse_2"); |
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
|
break; |
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case FSF_PROT_UNSUPP_QTCB_TYPE: |
|
dev_err(&adapter->ccw_device->dev, |
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"The QTCB type is not supported by the FCP adapter\n"); |
|
zfcp_erp_adapter_shutdown(adapter, 0, "fspse_3"); |
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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: |
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zfcp_fsf_link_down_info_eval(req, &psq->link_down_info); |
|
/* go through reopen to flush pending requests */ |
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zfcp_erp_adapter_reopen(adapter, 0, "fspse_6"); |
|
break; |
|
case FSF_PROT_REEST_QUEUE: |
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/* All ports should be marked as ready to run again */ |
|
zfcp_erp_set_adapter_status(adapter, |
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ZFCP_STATUS_COMMON_RUNNING); |
|
zfcp_erp_adapter_reopen(adapter, |
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ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | |
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ZFCP_STATUS_COMMON_ERP_FAILED, |
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"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); |
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zfcp_erp_adapter_shutdown(adapter, 0, "fspse_9"); |
|
} |
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
|
} |
|
|
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/** |
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* zfcp_fsf_req_complete - process completion of a FSF request |
|
* @req: The FSF request that has been completed. |
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* |
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* 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 |
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* events related to the FSF request. |
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* Caller must ensure that the request has been removed from |
|
* adapter->req_list, to protect against concurrent modification |
|
* by zfcp_erp_strategy_check_fsfreq(). |
|
*/ |
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static void zfcp_fsf_req_complete(struct zfcp_fsf_req *req) |
|
{ |
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struct zfcp_erp_action *erp_action; |
|
|
|
if (unlikely(zfcp_fsf_req_is_status_read_buffer(req))) { |
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zfcp_fsf_status_read_handler(req); |
|
return; |
|
} |
|
|
|
del_timer_sync(&req->timer); |
|
zfcp_fsf_protstatus_eval(req); |
|
zfcp_fsf_fsfstatus_eval(req); |
|
req->handler(req); |
|
|
|
erp_action = req->erp_action; |
|
if (erp_action) |
|
zfcp_erp_notify(erp_action, 0); |
|
|
|
if (likely(req->status & ZFCP_STATUS_FSFREQ_CLEANUP)) |
|
zfcp_fsf_req_free(req); |
|
else |
|
complete(&req->completion); |
|
} |
|
|
|
/** |
|
* 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); |
|
} |
|
} |
|
|
|
#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_32GBIT (1 << 6) |
|
#define ZFCP_FSF_PORTSPEED_64GBIT (1 << 7) |
|
#define ZFCP_FSF_PORTSPEED_128GBIT (1 << 8) |
|
#define ZFCP_FSF_PORTSPEED_NOT_NEGOTIATED (1 << 15) |
|
|
|
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_32GBIT) |
|
fdmi_speed |= FC_PORTSPEED_32GBIT; |
|
if (fsf_speed & ZFCP_FSF_PORTSPEED_64GBIT) |
|
fdmi_speed |= FC_PORTSPEED_64GBIT; |
|
if (fsf_speed & ZFCP_FSF_PORTSPEED_128GBIT) |
|
fdmi_speed |= FC_PORTSPEED_128GBIT; |
|
if (fsf_speed & ZFCP_FSF_PORTSPEED_NOT_NEGOTIATED) |
|
fdmi_speed |= FC_PORTSPEED_NOT_NEGOTIATED; |
|
return fdmi_speed; |
|
} |
|
|
|
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 fc_els_flogi *plogi; |
|
|
|
/* adjust pointers for missing command code */ |
|
plogi = (struct fc_els_flogi *) ((u8 *)&bottom->plogi_payload |
|
- sizeof(u32)); |
|
|
|
if (req->data) |
|
memcpy(req->data, bottom, sizeof(*bottom)); |
|
|
|
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); |
|
|
|
/* 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; |
|
|
|
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 = be64_to_cpu(plogi->fl_wwpn); |
|
adapter->peer_wwnn = be64_to_cpu(plogi->fl_wwnn); |
|
break; |
|
case FSF_TOPO_FABRIC: |
|
break; |
|
case FSF_TOPO_AL: |
|
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; |
|
} |
|
|
|
static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req) |
|
{ |
|
struct zfcp_adapter *adapter = req->adapter; |
|
struct zfcp_diag_header *const diag_hdr = |
|
&adapter->diagnostics->config_data.header; |
|
struct fsf_qtcb *qtcb = req->qtcb; |
|
struct fsf_qtcb_bottom_config *bottom = &qtcb->bottom.config; |
|
|
|
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: |
|
/* |
|
* usually we wait with an update till the cache is too old, |
|
* but because we have the data available, update it anyway |
|
*/ |
|
zfcp_diag_update_xdata(diag_hdr, bottom, false); |
|
|
|
zfcp_scsi_shost_update_config_data(adapter, bottom, false); |
|
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: |
|
zfcp_diag_update_xdata(diag_hdr, bottom, true); |
|
req->status |= ZFCP_STATUS_FSFREQ_XDATAINCOMPLETE; |
|
|
|
/* 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); |
|
|
|
zfcp_scsi_shost_update_config_data(adapter, bottom, true); |
|
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; |
|
|
|
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"); |
|
} |
|
} |
|
|
|
/* |
|
* Mapping of FC Endpoint Security flag masks to mnemonics |
|
* |
|
* NOTE: Update macro ZFCP_FSF_MAX_FC_SECURITY_MNEMONIC_LENGTH when making any |
|
* changes. |
|
*/ |
|
static const struct { |
|
u32 mask; |
|
char *name; |
|
} zfcp_fsf_fc_security_mnemonics[] = { |
|
{ FSF_FC_SECURITY_AUTH, "Authentication" }, |
|
{ FSF_FC_SECURITY_ENC_FCSP2 | |
|
FSF_FC_SECURITY_ENC_ERAS, "Encryption" }, |
|
}; |
|
|
|
/* maximum strlen(zfcp_fsf_fc_security_mnemonics[...].name) + 1 */ |
|
#define ZFCP_FSF_MAX_FC_SECURITY_MNEMONIC_LENGTH 15 |
|
|
|
/** |
|
* zfcp_fsf_scnprint_fc_security() - translate FC Endpoint Security flags into |
|
* mnemonics and place in a buffer |
|
* @buf : the buffer to place the translated FC Endpoint Security flag(s) |
|
* into |
|
* @size : the size of the buffer, including the trailing null space |
|
* @fc_security: one or more FC Endpoint Security flags, or zero |
|
* @fmt : specifies whether a list or a single item is to be put into the |
|
* buffer |
|
* |
|
* The Fibre Channel (FC) Endpoint Security flags are translated into mnemonics. |
|
* If the FC Endpoint Security flags are zero "none" is placed into the buffer. |
|
* |
|
* With ZFCP_FSF_PRINT_FMT_LIST the mnemonics are placed as a list separated by |
|
* a comma followed by a space into the buffer. If one or more FC Endpoint |
|
* Security flags cannot be translated into a mnemonic, as they are undefined |
|
* in zfcp_fsf_fc_security_mnemonics, their bitwise ORed value in hexadecimal |
|
* representation is placed into the buffer. |
|
* |
|
* With ZFCP_FSF_PRINT_FMT_SINGLEITEM only one single mnemonic is placed into |
|
* the buffer. If the FC Endpoint Security flag cannot be translated, as it is |
|
* undefined in zfcp_fsf_fc_security_mnemonics, its value in hexadecimal |
|
* representation is placed into the buffer. If more than one FC Endpoint |
|
* Security flag was specified, their value in hexadecimal representation is |
|
* placed into the buffer. The macro ZFCP_FSF_MAX_FC_SECURITY_MNEMONIC_LENGTH |
|
* can be used to define a buffer that is large enough to hold one mnemonic. |
|
* |
|
* Return: The number of characters written into buf not including the trailing |
|
* '\0'. If size is == 0 the function returns 0. |
|
*/ |
|
ssize_t zfcp_fsf_scnprint_fc_security(char *buf, size_t size, u32 fc_security, |
|
enum zfcp_fsf_print_fmt fmt) |
|
{ |
|
const char *prefix = ""; |
|
ssize_t len = 0; |
|
int i; |
|
|
|
if (fc_security == 0) |
|
return scnprintf(buf, size, "none"); |
|
if (fmt == ZFCP_FSF_PRINT_FMT_SINGLEITEM && hweight32(fc_security) != 1) |
|
return scnprintf(buf, size, "0x%08x", fc_security); |
|
|
|
for (i = 0; i < ARRAY_SIZE(zfcp_fsf_fc_security_mnemonics); i++) { |
|
if (!(fc_security & zfcp_fsf_fc_security_mnemonics[i].mask)) |
|
continue; |
|
|
|
len += scnprintf(buf + len, size - len, "%s%s", prefix, |
|
zfcp_fsf_fc_security_mnemonics[i].name); |
|
prefix = ", "; |
|
fc_security &= ~zfcp_fsf_fc_security_mnemonics[i].mask; |
|
} |
|
|
|
if (fc_security != 0) |
|
len += scnprintf(buf + len, size - len, "%s0x%08x", |
|
prefix, fc_security); |
|
|
|
return len; |
|
} |
|
|
|
static void zfcp_fsf_dbf_adapter_fc_security(struct zfcp_adapter *adapter, |
|
struct zfcp_fsf_req *req) |
|
{ |
|
if (adapter->fc_security_algorithms == |
|
adapter->fc_security_algorithms_old) { |
|
/* no change, no trace */ |
|
return; |
|
} |
|
|
|
zfcp_dbf_hba_fsf_fces("fsfcesa", req, ZFCP_DBF_INVALID_WWPN, |
|
adapter->fc_security_algorithms_old, |
|
adapter->fc_security_algorithms); |
|
|
|
adapter->fc_security_algorithms_old = adapter->fc_security_algorithms; |
|
} |
|
|
|
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; |
|
|
|
if (req->data) |
|
memcpy(req->data, bottom, sizeof(*bottom)); |
|
|
|
if (adapter->adapter_features & FSF_FEATURE_FC_SECURITY) |
|
adapter->fc_security_algorithms = |
|
bottom->fc_security_algorithms; |
|
else |
|
adapter->fc_security_algorithms = 0; |
|
zfcp_fsf_dbf_adapter_fc_security(adapter, req); |
|
} |
|
|
|
static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req) |
|
{ |
|
struct zfcp_diag_header *const diag_hdr = |
|
&req->adapter->diagnostics->port_data.header; |
|
struct fsf_qtcb *qtcb = req->qtcb; |
|
struct fsf_qtcb_bottom_port *bottom = &qtcb->bottom.port; |
|
|
|
if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
|
return; |
|
|
|
switch (qtcb->header.fsf_status) { |
|
case FSF_GOOD: |
|
/* |
|
* usually we wait with an update till the cache is too old, |
|
* but because we have the data available, update it anyway |
|
*/ |
|
zfcp_diag_update_xdata(diag_hdr, bottom, false); |
|
|
|
zfcp_scsi_shost_update_port_data(req->adapter, bottom); |
|
zfcp_fsf_exchange_port_evaluate(req); |
|
break; |
|
case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: |
|
zfcp_diag_update_xdata(diag_hdr, bottom, true); |
|
req->status |= ZFCP_STATUS_FSFREQ_XDATAINCOMPLETE; |
|
|
|
zfcp_fsf_link_down_info_eval(req, |
|
&qtcb->header.fsf_status_qual.link_down_info); |
|
|
|
zfcp_scsi_shost_update_port_data(req->adapter, bottom); |
|
zfcp_fsf_exchange_port_evaluate(req); |
|
break; |
|
} |
|
} |
|
|
|
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; |
|
} |
|
|
|
static struct fsf_qtcb *zfcp_fsf_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; |
|
} |
|
|
|
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); |
|
timer_setup(&req->timer, NULL, 0); |
|
init_completion(&req->completion); |
|
|
|
req->adapter = adapter; |
|
req->req_id = adapter->req_no; |
|
|
|
if (likely(fsf_cmd != FSF_QTCB_UNSOLICITED_STATUS)) { |
|
if (likely(pool)) |
|
req->qtcb = zfcp_fsf_qtcb_alloc( |
|
adapter->pool.qtcb_pool); |
|
else |
|
req->qtcb = zfcp_fsf_qtcb_alloc(NULL); |
|
|
|
if (unlikely(!req->qtcb)) { |
|
zfcp_fsf_req_free(req); |
|
return ERR_PTR(-ENOMEM); |
|
} |
|
|
|
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[fsf_cmd]; |
|
req->qtcb->prefix.qtcb_version = FSF_QTCB_CURRENT_VERSION; |
|
req->qtcb->header.req_handle = req->req_id; |
|
req->qtcb->header.fsf_command = fsf_cmd; |
|
} |
|
|
|
zfcp_qdio_req_init(adapter->qdio, &req->qdio_req, req->req_id, sbtype, |
|
req->qtcb, sizeof(struct fsf_qtcb)); |
|
|
|
return req; |
|
} |
|
|
|
static int zfcp_fsf_req_send(struct zfcp_fsf_req *req) |
|
{ |
|
const bool is_srb = zfcp_fsf_req_is_status_read_buffer(req); |
|
struct zfcp_adapter *adapter = req->adapter; |
|
struct zfcp_qdio *qdio = adapter->qdio; |
|
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_sync(&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; |
|
} |
|
|
|
/* |
|
* NOTE: DO NOT TOUCH ASYNC req PAST THIS POINT. |
|
* ONLY TOUCH SYNC req AGAIN ON req->completion. |
|
* |
|
* The request might complete and be freed concurrently at any point |
|
* now. This is not protected by the QDIO-lock (req_q_lock). So any |
|
* uncontrolled access after this might result in an use-after-free bug. |
|
* Only if the request doesn't have ZFCP_STATUS_FSFREQ_CLEANUP set, and |
|
* when it is completed via req->completion, is it safe to use req |
|
* again. |
|
*/ |
|
|
|
/* Don't increase for unsolicited status */ |
|
if (!is_srb) |
|
adapter->fsf_req_seq_no++; |
|
adapter->req_no++; |
|
|
|
return 0; |
|
} |
|
|
|
/** |
|
* zfcp_fsf_status_read - send status read request |
|
* @qdio: pointer to struct zfcp_qdio |
|
* 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; |
|
/* NOTE: DO NOT TOUCH req PAST THIS POINT! */ |
|
|
|
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; |
|
} |
|
|
|
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); |
|
fallthrough; |
|
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; |
|
} |
|
} |
|
|
|
/** |
|
* 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_FSF_SCSI_ER_TIMEOUT); |
|
if (!zfcp_fsf_req_send(req)) { |
|
/* NOTE: DO NOT TOUCH req, UNTIL IT COMPLETES! */ |
|
goto out; |
|
} |
|
|
|
out_error_free: |
|
zfcp_fsf_req_free(req); |
|
req = NULL; |
|
out: |
|
spin_unlock_irq(&qdio->req_q_lock); |
|
return req; |
|
} |
|
|
|
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: |
|
ct->status = 0; |
|
zfcp_dbf_san_res("fsscth2", req); |
|
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"); |
|
fallthrough; |
|
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); |
|
} |
|
|
|
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); |
|
} |
|
|
|
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; |
|
qtcb->bottom.support.req_buf_length = |
|
zfcp_qdio_real_bytes(sg_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_data_div(qdio, &req->qdio_req, sg_nents(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; |
|
} |
|
|
|
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; |
|
} |
|
|
|
/** |
|
* zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS) |
|
* @wka_port: pointer to zfcp WKA port to send CT/GS to |
|
* @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 |
|
* @timeout: timeout that hardware should use, and a later software timeout |
|
*/ |
|
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; |
|
ct->d_id = wka_port->d_id; |
|
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; |
|
/* NOTE: DO NOT TOUCH req PAST THIS POINT! */ |
|
|
|
goto out; |
|
|
|
failed_send: |
|
zfcp_fsf_req_free(req); |
|
out: |
|
spin_unlock_irq(&qdio->req_q_lock); |
|
return ret; |
|
} |
|
|
|
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: |
|
send_els->status = 0; |
|
zfcp_dbf_san_res("fsselh1", req); |
|
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 */ |
|
fallthrough; |
|
default: |
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
|
break; |
|
} |
|
skip_fsfstatus: |
|
if (send_els->handler) |
|
send_els->handler(send_els->handler_data); |
|
} |
|
|
|
/** |
|
* zfcp_fsf_send_els - initiate an ELS command (FC-FS) |
|
* @adapter: pointer to zfcp adapter |
|
* @d_id: N_Port_ID to send ELS to |
|
* @els: pointer to struct zfcp_send_els with data for the command |
|
* @timeout: timeout that hardware should use, and a later software timeout |
|
*/ |
|
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; |
|
els->d_id = d_id; |
|
req->data = els; |
|
|
|
zfcp_dbf_san_req("fssels1", req, d_id); |
|
|
|
ret = zfcp_fsf_req_send(req); |
|
if (ret) |
|
goto failed_send; |
|
/* NOTE: DO NOT TOUCH req PAST THIS POINT! */ |
|
|
|
goto out; |
|
|
|
failed_send: |
|
zfcp_fsf_req_free(req); |
|
out: |
|
spin_unlock_irq(&qdio->req_q_lock); |
|
return ret; |
|
} |
|
|
|
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 | |
|
FSF_FEATURE_REQUEST_SFP_DATA | |
|
FSF_FEATURE_FC_SECURITY; |
|
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; |
|
} |
|
/* NOTE: DO NOT TOUCH req PAST THIS POINT! */ |
|
out: |
|
spin_unlock_irq(&qdio->req_q_lock); |
|
return retval; |
|
} |
|
|
|
|
|
/** |
|
* zfcp_fsf_exchange_config_data_sync() - Request information about FCP channel. |
|
* @qdio: pointer to the QDIO-Queue to use for sending the command. |
|
* @data: pointer to the QTCB-Bottom for storing the result of the command, |
|
* might be %NULL. |
|
* |
|
* Returns: |
|
* * 0 - Exchange Config Data was successful, @data is complete |
|
* * -EIO - Exchange Config Data was not successful, @data is invalid |
|
* * -EAGAIN - @data contains incomplete data |
|
* * -ENOMEM - Some memory allocation failed along the way |
|
*/ |
|
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 | |
|
FSF_FEATURE_REQUEST_SFP_DATA | |
|
FSF_FEATURE_FC_SECURITY; |
|
|
|
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) { |
|
/* NOTE: ONLY TOUCH SYNC req AGAIN ON req->completion. */ |
|
wait_for_completion(&req->completion); |
|
|
|
if (req->status & |
|
(ZFCP_STATUS_FSFREQ_ERROR | ZFCP_STATUS_FSFREQ_DISMISSED)) |
|
retval = -EIO; |
|
else if (req->status & ZFCP_STATUS_FSFREQ_XDATAINCOMPLETE) |
|
retval = -EAGAIN; |
|
} |
|
|
|
zfcp_fsf_req_free(req); |
|
return retval; |
|
|
|
out_unlock: |
|
spin_unlock_irq(&qdio->req_q_lock); |
|
return retval; |
|
} |
|
|
|
/** |
|
* 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; |
|
} |
|
/* NOTE: DO NOT TOUCH req PAST THIS POINT! */ |
|
out: |
|
spin_unlock_irq(&qdio->req_q_lock); |
|
return retval; |
|
} |
|
|
|
/** |
|
* zfcp_fsf_exchange_port_data_sync() - Request information about local port. |
|
* @qdio: pointer to the QDIO-Queue to use for sending the command. |
|
* @data: pointer to the QTCB-Bottom for storing the result of the command, |
|
* might be %NULL. |
|
* |
|
* Returns: |
|
* * 0 - Exchange Port Data was successful, @data is complete |
|
* * -EIO - Exchange Port Data was not successful, @data is invalid |
|
* * -EAGAIN - @data contains incomplete data |
|
* * -ENOMEM - Some memory allocation failed along the way |
|
* * -EOPNOTSUPP - This operation is not supported |
|
*/ |
|
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) { |
|
/* NOTE: ONLY TOUCH SYNC req AGAIN ON req->completion. */ |
|
wait_for_completion(&req->completion); |
|
|
|
if (req->status & |
|
(ZFCP_STATUS_FSFREQ_ERROR | ZFCP_STATUS_FSFREQ_DISMISSED)) |
|
retval = -EIO; |
|
else if (req->status & ZFCP_STATUS_FSFREQ_XDATAINCOMPLETE) |
|
retval = -EAGAIN; |
|
} |
|
|
|
zfcp_fsf_req_free(req); |
|
return retval; |
|
|
|
out_unlock: |
|
spin_unlock_irq(&qdio->req_q_lock); |
|
return retval; |
|
} |
|
|
|
static void zfcp_fsf_log_port_fc_security(struct zfcp_port *port, |
|
struct zfcp_fsf_req *req) |
|
{ |
|
char mnemonic_old[ZFCP_FSF_MAX_FC_SECURITY_MNEMONIC_LENGTH]; |
|
char mnemonic_new[ZFCP_FSF_MAX_FC_SECURITY_MNEMONIC_LENGTH]; |
|
|
|
if (port->connection_info == port->connection_info_old) { |
|
/* no change, no log nor trace */ |
|
return; |
|
} |
|
|
|
zfcp_dbf_hba_fsf_fces("fsfcesp", req, port->wwpn, |
|
port->connection_info_old, |
|
port->connection_info); |
|
|
|
zfcp_fsf_scnprint_fc_security(mnemonic_old, sizeof(mnemonic_old), |
|
port->connection_info_old, |
|
ZFCP_FSF_PRINT_FMT_SINGLEITEM); |
|
zfcp_fsf_scnprint_fc_security(mnemonic_new, sizeof(mnemonic_new), |
|
port->connection_info, |
|
ZFCP_FSF_PRINT_FMT_SINGLEITEM); |
|
|
|
if (strncmp(mnemonic_old, mnemonic_new, |
|
ZFCP_FSF_MAX_FC_SECURITY_MNEMONIC_LENGTH) == 0) { |
|
/* no change in string representation, no log */ |
|
goto out; |
|
} |
|
|
|
if (port->connection_info_old == 0) { |
|
/* activation */ |
|
dev_info(&port->adapter->ccw_device->dev, |
|
"FC Endpoint Security of connection to remote port 0x%16llx enabled: %s\n", |
|
port->wwpn, mnemonic_new); |
|
} else if (port->connection_info == 0) { |
|
/* deactivation */ |
|
dev_warn(&port->adapter->ccw_device->dev, |
|
"FC Endpoint Security of connection to remote port 0x%16llx disabled: was %s\n", |
|
port->wwpn, mnemonic_old); |
|
} else { |
|
/* change */ |
|
dev_warn(&port->adapter->ccw_device->dev, |
|
"FC Endpoint Security of connection to remote port 0x%16llx changed: from %s to %s\n", |
|
port->wwpn, mnemonic_old, mnemonic_new); |
|
} |
|
|
|
out: |
|
port->connection_info_old = port->connection_info; |
|
} |
|
|
|
static void zfcp_fsf_log_security_error(const struct device *dev, u32 fsf_sqw0, |
|
u64 wwpn) |
|
{ |
|
switch (fsf_sqw0) { |
|
|
|
/* |
|
* Open Port command error codes |
|
*/ |
|
|
|
case FSF_SQ_SECURITY_REQUIRED: |
|
dev_warn_ratelimited(dev, |
|
"FC Endpoint Security error: FC security is required but not supported or configured on remote port 0x%016llx\n", |
|
wwpn); |
|
break; |
|
case FSF_SQ_SECURITY_TIMEOUT: |
|
dev_warn_ratelimited(dev, |
|
"FC Endpoint Security error: a timeout prevented opening remote port 0x%016llx\n", |
|
wwpn); |
|
break; |
|
case FSF_SQ_SECURITY_KM_UNAVAILABLE: |
|
dev_warn_ratelimited(dev, |
|
"FC Endpoint Security error: opening remote port 0x%016llx failed because local and external key manager cannot communicate\n", |
|
wwpn); |
|
break; |
|
case FSF_SQ_SECURITY_RKM_UNAVAILABLE: |
|
dev_warn_ratelimited(dev, |
|
"FC Endpoint Security error: opening remote port 0x%016llx failed because it cannot communicate with the external key manager\n", |
|
wwpn); |
|
break; |
|
case FSF_SQ_SECURITY_AUTH_FAILURE: |
|
dev_warn_ratelimited(dev, |
|
"FC Endpoint Security error: the device could not verify the identity of remote port 0x%016llx\n", |
|
wwpn); |
|
break; |
|
|
|
/* |
|
* Send FCP command error codes |
|
*/ |
|
|
|
case FSF_SQ_SECURITY_ENC_FAILURE: |
|
dev_warn_ratelimited(dev, |
|
"FC Endpoint Security error: FC connection to remote port 0x%016llx closed because encryption broke down\n", |
|
wwpn); |
|
break; |
|
|
|
/* |
|
* Unknown error codes |
|
*/ |
|
|
|
default: |
|
dev_warn_ratelimited(dev, |
|
"FC Endpoint Security error: the device issued an unknown error code 0x%08x related to the FC connection to remote port 0x%016llx\n", |
|
fsf_sqw0, wwpn); |
|
} |
|
} |
|
|
|
static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req) |
|
{ |
|
struct zfcp_adapter *adapter = req->adapter; |
|
struct zfcp_port *port = req->data; |
|
struct fsf_qtcb_header *header = &req->qtcb->header; |
|
struct fsf_qtcb_bottom_support *bottom = &req->qtcb->bottom.support; |
|
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(&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_SECURITY_ERROR: |
|
zfcp_fsf_log_security_error(&req->adapter->ccw_device->dev, |
|
header->fsf_status_qual.word[0], |
|
port->wwpn); |
|
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: |
|
/* no zfcp_fc_test_link() with failed open port */ |
|
fallthrough; |
|
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; |
|
if (adapter->adapter_features & FSF_FEATURE_FC_SECURITY) |
|
port->connection_info = bottom->connection_info; |
|
else |
|
port->connection_info = 0; |
|
zfcp_fsf_log_port_fc_security(port, req); |
|
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 *) bottom->els; |
|
if (bottom->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); |
|
} |
|
|
|
/** |
|
* 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); |
|
} |
|
/* NOTE: DO NOT TOUCH req PAST THIS POINT! */ |
|
out: |
|
spin_unlock_irq(&qdio->req_q_lock); |
|
return retval; |
|
} |
|
|
|
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; |
|
} |
|
} |
|
|
|
/** |
|
* 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; |
|
} |
|
/* NOTE: DO NOT TOUCH req PAST THIS POINT! */ |
|
out: |
|
spin_unlock_irq(&qdio->req_q_lock); |
|
return retval; |
|
} |
|
|
|
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); |
|
fallthrough; |
|
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; |
|
fallthrough; |
|
case FSF_PORT_ALREADY_OPEN: |
|
wka_port->status = ZFCP_FC_WKA_PORT_ONLINE; |
|
} |
|
out: |
|
wake_up(&wka_port->completion_wq); |
|
} |
|
|
|
/** |
|
* 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; |
|
unsigned long req_id = 0; |
|
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; |
|
|
|
req_id = req->req_id; |
|
|
|
zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
|
retval = zfcp_fsf_req_send(req); |
|
if (retval) |
|
zfcp_fsf_req_free(req); |
|
/* NOTE: DO NOT TOUCH req PAST THIS POINT! */ |
|
out: |
|
spin_unlock_irq(&qdio->req_q_lock); |
|
if (!retval) |
|
zfcp_dbf_rec_run_wka("fsowp_1", wka_port, req_id); |
|
return retval; |
|
} |
|
|
|
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); |
|
} |
|
|
|
/** |
|
* 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; |
|
unsigned long req_id = 0; |
|
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; |
|
|
|
req_id = req->req_id; |
|
|
|
zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
|
retval = zfcp_fsf_req_send(req); |
|
if (retval) |
|
zfcp_fsf_req_free(req); |
|
/* NOTE: DO NOT TOUCH req PAST THIS POINT! */ |
|
out: |
|
spin_unlock_irq(&qdio->req_q_lock); |
|
if (!retval) |
|
zfcp_dbf_rec_run_wka("fscwp_1", wka_port, req_id); |
|
return retval; |
|
} |
|
|
|
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: |
|
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; |
|
} |
|
} |
|
|
|
/** |
|
* 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; |
|
} |
|
/* NOTE: DO NOT TOUCH req PAST THIS POINT! */ |
|
out: |
|
spin_unlock_irq(&qdio->req_q_lock); |
|
return retval; |
|
} |
|
|
|
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"); |
|
fallthrough; |
|
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%016Lx on port 0x%016Lx 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); |
|
fallthrough; |
|
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); |
|
fallthrough; |
|
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; |
|
} |
|
} |
|
|
|
/** |
|
* 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; |
|
} |
|
/* NOTE: DO NOT TOUCH req PAST THIS POINT! */ |
|
out: |
|
spin_unlock_irq(&qdio->req_q_lock); |
|
return retval; |
|
} |
|
|
|
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); |
|
fallthrough; |
|
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; |
|
} |
|
} |
|
|
|
/** |
|
* 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; |
|
} |
|
/* NOTE: DO NOT TOUCH req PAST THIS POINT! */ |
|
out: |
|
spin_unlock_irq(&qdio->req_q_lock); |
|
return retval; |
|
} |
|
|
|
static void zfcp_fsf_update_lat(struct zfcp_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); |
|
} |
|
|
|
static void zfcp_fsf_req_trace(struct zfcp_fsf_req *req, struct scsi_cmnd *scsi) |
|
{ |
|
struct fsf_qual_latency_info *lat_in; |
|
struct zfcp_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, &blktrc, sizeof(blktrc)); |
|
} |
|
|
|
/** |
|
* zfcp_fsf_fcp_handler_common() - FCP response handler common to I/O and TMF. |
|
* @req: Pointer to FSF request. |
|
* @sdev: Pointer to SCSI device as request context. |
|
*/ |
|
static void zfcp_fsf_fcp_handler_common(struct zfcp_fsf_req *req, |
|
struct scsi_device *sdev) |
|
{ |
|
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(req->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(req->adapter, 0, "fssfch3"); |
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
|
break; |
|
case FSF_CMND_LENGTH_NOT_VALID: |
|
dev_err(&req->adapter->ccw_device->dev, |
|
"Incorrect FCP_CMND length %d, FCP device closed\n", |
|
req->qtcb->bottom.io.fcp_cmnd_length); |
|
zfcp_erp_adapter_shutdown(req->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; |
|
case FSF_SECURITY_ERROR: |
|
zfcp_fsf_log_security_error(&req->adapter->ccw_device->dev, |
|
header->fsf_status_qual.word[0], |
|
zfcp_sdev->port->wwpn); |
|
zfcp_erp_port_forced_reopen(zfcp_sdev->port, 0, "fssfch7"); |
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
|
break; |
|
} |
|
} |
|
|
|
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, scpnt->device); |
|
|
|
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; |
|
} |
|
BUILD_BUG_ON(sizeof(struct fcp_resp_with_ext) > FSF_FCP_RSP_SIZE); |
|
fcp_rsp = &req->qtcb->bottom.io.fcp_rsp.iu; |
|
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); |
|
} |
|
|
|
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; |
|
} |
|
|
|
/** |
|
* 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; |
|
|
|
BUILD_BUG_ON(sizeof(struct fcp_cmnd) > FSF_FCP_CMND_SIZE); |
|
fcp_cmnd = &req->qtcb->bottom.io.fcp_cmnd.iu; |
|
zfcp_fc_scsi_to_fcp(fcp_cmnd, scsi_cmnd); |
|
|
|
if ((scsi_get_prot_op(scsi_cmnd) != SCSI_PROT_NORMAL) && |
|
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; |
|
/* NOTE: DO NOT TOUCH req PAST THIS POINT! */ |
|
|
|
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; |
|
} |
|
|
|
static void zfcp_fsf_fcp_task_mgmt_handler(struct zfcp_fsf_req *req) |
|
{ |
|
struct scsi_device *sdev = req->data; |
|
struct fcp_resp_with_ext *fcp_rsp; |
|
struct fcp_resp_rsp_info *rsp_info; |
|
|
|
zfcp_fsf_fcp_handler_common(req, sdev); |
|
|
|
fcp_rsp = &req->qtcb->bottom.io.fcp_rsp.iu; |
|
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; |
|
} |
|
|
|
/** |
|
* zfcp_fsf_fcp_task_mgmt() - Send SCSI task management command (TMF). |
|
* @sdev: Pointer to SCSI device to send the task management command to. |
|
* @tm_flags: Unsigned byte for task management flags. |
|
* |
|
* Return: On success pointer to struct zfcp_fsf_req, %NULL otherwise. |
|
*/ |
|
struct zfcp_fsf_req *zfcp_fsf_fcp_task_mgmt(struct scsi_device *sdev, |
|
u8 tm_flags) |
|
{ |
|
struct zfcp_fsf_req *req = NULL; |
|
struct fcp_cmnd *fcp_cmnd; |
|
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); |
|
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 = sdev; |
|
|
|
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 = &req->qtcb->bottom.io.fcp_cmnd.iu; |
|
zfcp_fc_fcp_tm(fcp_cmnd, sdev, tm_flags); |
|
|
|
zfcp_fsf_start_timer(req, ZFCP_FSF_SCSI_ER_TIMEOUT); |
|
if (!zfcp_fsf_req_send(req)) { |
|
/* NOTE: DO NOT TOUCH req, UNTIL IT COMPLETES! */ |
|
goto out; |
|
} |
|
|
|
zfcp_fsf_req_free(req); |
|
req = NULL; |
|
out: |
|
spin_unlock_irq(&qdio->req_q_lock); |
|
return req; |
|
} |
|
|
|
/** |
|
* zfcp_fsf_reqid_check - validate req_id contained in SBAL returned by QDIO |
|
* @qdio: pointer to struct zfcp_qdio |
|
* @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 = 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)); |
|
} |
|
|
|
zfcp_fsf_req_complete(fsf_req); |
|
|
|
if (likely(sbale->eflags & SBAL_EFLAGS_LAST_ENTRY)) |
|
break; |
|
} |
|
}
|
|
|