scsi: lpfc: Reinstate lpfc_soft_wwn parameter (352e5fd1) · Commits · e / devices / android_kernel_fairphone_FP5

drivers/scsi/lpfc/lpfc.h

+4 −0

Original line number	Diff line number	Diff line
		@@ -728,6 +728,8 @@ struct lpfc_hba {
		uint32_t cfg_total_seg_cnt;
		uint32_t cfg_sg_seg_cnt;
		uint32_t cfg_sg_dma_buf_size;
		uint64_t cfg_soft_wwnn;
		uint64_t cfg_soft_wwpn;
		uint32_t cfg_hba_queue_depth;
		uint32_t cfg_enable_hba_reset;
		uint32_t cfg_enable_hba_heartbeat;
		@@ -832,6 +834,8 @@ struct lpfc_hba {
		#define VPD_PORT 0x8 /* valid vpd port data */
		#define VPD_MASK 0xf /* mask for any vpd data */

		uint8_t soft_wwn_enable;

		struct timer_list fcp_poll_timer;
		struct timer_list eratt_poll;
		uint32_t eratt_poll_interval;

drivers/scsi/lpfc/lpfc_attr.c

+223 −0

Original line number	Diff line number	Diff line
		@@ -1987,6 +1987,7 @@ static DEVICE_ATTR(protocol, S_IRUGO, lpfc_sli4_protocol_show, NULL);
		static DEVICE_ATTR(lpfc_xlane_supported, S_IRUGO, lpfc_oas_supported_show,
		NULL);

		static char *lpfc_soft_wwn_key = "C99G71SL8032A";
		#define WWN_SZ 8
		/**
		* lpfc_wwn_set - Convert string to the 8 byte WWN value.
		@@ -2030,6 +2031,223 @@ lpfc_wwn_set(const char *buf, size_t cnt, char wwn[])
		}
		return 0;
		}
		/**
		* lpfc_soft_wwn_enable_store - Allows setting of the wwn if the key is valid
		* @dev: class device that is converted into a Scsi_host.
		* @attr: device attribute, not used.
		* @buf: containing the string lpfc_soft_wwn_key.
		* @count: must be size of lpfc_soft_wwn_key.
		*
		* Returns:
		* -EINVAL if the buffer does not contain lpfc_soft_wwn_key
		* length of buf indicates success
		**/
		static ssize_t
		lpfc_soft_wwn_enable_store(struct device dev, struct device_attribute attr,
		const char *buf, size_t count)
		{
		struct Scsi_Host *shost = class_to_shost(dev);
		struct lpfc_vport vport = (struct lpfc_vport ) shost->hostdata;
		struct lpfc_hba *phba = vport->phba;
		unsigned int cnt = count;

		/*
		* We're doing a simple sanity check for soft_wwpn setting.
		* We require that the user write a specific key to enable
		* the soft_wwpn attribute to be settable. Once the attribute
		* is written, the enable key resets. If further updates are
		* desired, the key must be written again to re-enable the
		* attribute.
		*
		* The "key" is not secret - it is a hardcoded string shown
		* here. The intent is to protect against the random user or
		* application that is just writing attributes.
		*/

		/* count may include a LF at end of string */
		if (buf[cnt-1] == '\n')
		cnt--;

		if ((cnt != strlen(lpfc_soft_wwn_key)) \|\|
		(strncmp(buf, lpfc_soft_wwn_key, strlen(lpfc_soft_wwn_key)) != 0))
		return -EINVAL;

		phba->soft_wwn_enable = 1;

		dev_printk(KERN_WARNING, &phba->pcidev->dev,
		"lpfc%d: soft_wwpn assignment has been enabled.\n",
		phba->brd_no);
		dev_printk(KERN_WARNING, &phba->pcidev->dev,
		" The soft_wwpn feature is not supported by Broadcom.");

		return count;
		}
		static DEVICE_ATTR(lpfc_soft_wwn_enable, S_IWUSR, NULL,
		lpfc_soft_wwn_enable_store);

		/**
		* lpfc_soft_wwpn_show - Return the cfg soft ww port name of the adapter
		* @dev: class device that is converted into a Scsi_host.
		* @attr: device attribute, not used.
		* @buf: on return contains the wwpn in hexadecimal.
		*
		* Returns: size of formatted string.
		**/
		static ssize_t
		lpfc_soft_wwpn_show(struct device dev, struct device_attribute attr,
		char *buf)
		{
		struct Scsi_Host *shost = class_to_shost(dev);
		struct lpfc_vport vport = (struct lpfc_vport ) shost->hostdata;
		struct lpfc_hba *phba = vport->phba;

		return snprintf(buf, PAGE_SIZE, "0x%llx\n",
		(unsigned long long)phba->cfg_soft_wwpn);
		}

		/**
		* lpfc_soft_wwpn_store - Set the ww port name of the adapter
		* @dev class device that is converted into a Scsi_host.
		* @attr: device attribute, not used.
		* @buf: contains the wwpn in hexadecimal.
		* @count: number of wwpn bytes in buf
		*
		* Returns:
		* -EACCES hba reset not enabled, adapter over temp
		* -EINVAL soft wwn not enabled, count is invalid, invalid wwpn byte invalid
		* -EIO error taking adapter offline or online
		* value of count on success
		**/
		static ssize_t
		lpfc_soft_wwpn_store(struct device dev, struct device_attribute attr,
		const char *buf, size_t count)
		{
		struct Scsi_Host *shost = class_to_shost(dev);
		struct lpfc_vport vport = (struct lpfc_vport ) shost->hostdata;
		struct lpfc_hba *phba = vport->phba;
		struct completion online_compl;
		int stat1 = 0, stat2 = 0;
		unsigned int cnt = count;
		u8 wwpn[WWN_SZ];
		int rc;

		if (!phba->cfg_enable_hba_reset)
		return -EACCES;
		spin_lock_irq(&phba->hbalock);
		if (phba->over_temp_state == HBA_OVER_TEMP) {
		spin_unlock_irq(&phba->hbalock);
		return -EACCES;
		}
		spin_unlock_irq(&phba->hbalock);
		/* count may include a LF at end of string */
		if (buf[cnt-1] == '\n')
		cnt--;

		if (!phba->soft_wwn_enable)
		return -EINVAL;

		/* lock setting wwpn, wwnn down */
		phba->soft_wwn_enable = 0;

		rc = lpfc_wwn_set(buf, cnt, wwpn);
		if (!rc) {
		/* not able to set wwpn, unlock it */
		phba->soft_wwn_enable = 1;
		return rc;
		}

		phba->cfg_soft_wwpn = wwn_to_u64(wwpn);
		fc_host_port_name(shost) = phba->cfg_soft_wwpn;
		if (phba->cfg_soft_wwnn)
		fc_host_node_name(shost) = phba->cfg_soft_wwnn;

		dev_printk(KERN_NOTICE, &phba->pcidev->dev,
		"lpfc%d: Reinitializing to use soft_wwpn\n", phba->brd_no);

		stat1 = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
		if (stat1)
		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
		"0463 lpfc_soft_wwpn attribute set failed to "
		"reinit adapter - %d\n", stat1);
		init_completion(&online_compl);
		rc = lpfc_workq_post_event(phba, &stat2, &online_compl,
		LPFC_EVT_ONLINE);
		if (rc == 0)
		return -ENOMEM;

		wait_for_completion(&online_compl);
		if (stat2)
		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
		"0464 lpfc_soft_wwpn attribute set failed to "
		"reinit adapter - %d\n", stat2);
		return (stat1 \|\| stat2) ? -EIO : count;
		}
		static DEVICE_ATTR(lpfc_soft_wwpn, S_IRUGO \| S_IWUSR,
		lpfc_soft_wwpn_show, lpfc_soft_wwpn_store);

		/**
		* lpfc_soft_wwnn_show - Return the cfg soft ww node name for the adapter
		* @dev: class device that is converted into a Scsi_host.
		* @attr: device attribute, not used.
		* @buf: on return contains the wwnn in hexadecimal.
		*
		* Returns: size of formatted string.
		**/
		static ssize_t
		lpfc_soft_wwnn_show(struct device dev, struct device_attribute attr,
		char *buf)
		{
		struct Scsi_Host *shost = class_to_shost(dev);
		struct lpfc_hba phba = ((struct lpfc_vport )shost->hostdata)->phba;
		return snprintf(buf, PAGE_SIZE, "0x%llx\n",
		(unsigned long long)phba->cfg_soft_wwnn);
		}

		/**
		* lpfc_soft_wwnn_store - sets the ww node name of the adapter
		* @cdev: class device that is converted into a Scsi_host.
		* @buf: contains the ww node name in hexadecimal.
		* @count: number of wwnn bytes in buf.
		*
		* Returns:
		* -EINVAL soft wwn not enabled, count is invalid, invalid wwnn byte invalid
		* value of count on success
		**/
		static ssize_t
		lpfc_soft_wwnn_store(struct device dev, struct device_attribute attr,
		const char *buf, size_t count)
		{
		struct Scsi_Host *shost = class_to_shost(dev);
		struct lpfc_hba phba = ((struct lpfc_vport )shost->hostdata)->phba;
		unsigned int cnt = count;
		u8 wwnn[WWN_SZ];
		int rc;

		/* count may include a LF at end of string */
		if (buf[cnt-1] == '\n')
		cnt--;

		if (!phba->soft_wwn_enable)
		return -EINVAL;

		rc = lpfc_wwn_set(buf, cnt, wwnn);
		if (!rc) {
		/* Allow wwnn to be set many times, as long as the enable
		* is set. However, once the wwpn is set, everything locks.
		*/
		return rc;
		}

		phba->cfg_soft_wwnn = wwn_to_u64(wwnn);

		dev_printk(KERN_NOTICE, &phba->pcidev->dev,
		"lpfc%d: soft_wwnn set. Value will take effect upon "
		"setting of the soft_wwpn\n", phba->brd_no);

		return count;
		}
		static DEVICE_ATTR(lpfc_soft_wwnn, S_IRUGO \| S_IWUSR,
		lpfc_soft_wwnn_show, lpfc_soft_wwnn_store);

		/**
		* lpfc_oas_tgt_show - Return wwpn of target whose luns maybe enabled for
		@@ -4538,6 +4756,9 @@ struct device_attribute *lpfc_hba_attrs[] = {
		&dev_attr_lpfc_fcp_cpu_map,
		&dev_attr_lpfc_fcp_io_channel,
		&dev_attr_lpfc_enable_bg,
		&dev_attr_lpfc_soft_wwnn,
		&dev_attr_lpfc_soft_wwpn,
		&dev_attr_lpfc_soft_wwn_enable,
		&dev_attr_lpfc_enable_hba_reset,
		&dev_attr_lpfc_enable_hba_heartbeat,
		&dev_attr_lpfc_EnableXLane,
		@@ -5566,6 +5787,8 @@ lpfc_get_cfgparam(struct lpfc_hba *phba)
		else
		phba->cfg_poll = lpfc_poll;

		phba->cfg_soft_wwnn = 0L;
		phba->cfg_soft_wwpn = 0L;
		lpfc_sg_seg_cnt_init(phba, lpfc_sg_seg_cnt);
		lpfc_hba_queue_depth_init(phba, lpfc_hba_queue_depth);
		lpfc_hba_log_verbose_init(phba, lpfc_log_verbose);

drivers/scsi/lpfc/lpfc_init.c

+13 −3

Original line number	Diff line number	Diff line
		@@ -319,26 +319,36 @@ lpfc_dump_wakeup_param_cmpl(struct lpfc_hba phba, LPFC_MBOXQ_t pmboxq)

		/**
		* lpfc_update_vport_wwn - Updates the fc_nodename, fc_portname,
		* cfg_soft_wwnn, cfg_soft_wwpn
		* @vport: pointer to lpfc vport data structure.
		*
		*
		* Return codes
		* None.
		**/
		void
		lpfc_update_vport_wwn(struct lpfc_vport *vport)
		{
		/* If the soft name exists then update it using the service params */
		if (vport->phba->cfg_soft_wwnn)
		u64_to_wwn(vport->phba->cfg_soft_wwnn,
		vport->fc_sparam.nodeName.u.wwn);
		if (vport->phba->cfg_soft_wwpn)
		u64_to_wwn(vport->phba->cfg_soft_wwpn,
		vport->fc_sparam.portName.u.wwn);

		/*
		* If the name is empty
		* If the name is empty or there exists a soft name
		* then copy the service params name, otherwise use the fc name
		*/
		if (vport->fc_nodename.u.wwn[0] == 0)
		if (vport->fc_nodename.u.wwn[0] == 0 \|\| vport->phba->cfg_soft_wwnn)
		memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
		sizeof(struct lpfc_name));
		else
		memcpy(&vport->fc_sparam.nodeName, &vport->fc_nodename,
		sizeof(struct lpfc_name));

		if (vport->fc_portname.u.wwn[0] == 0)
		if (vport->fc_portname.u.wwn[0] == 0 \|\| vport->phba->cfg_soft_wwpn)
		memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
		sizeof(struct lpfc_name));
		else