drivers/scsi/scsi_transport_fc.c

30 static int fc_vport_setup(struct Scsi_Host *shost, int channel,
389 	struct Scsi_Host *shost = dev_to_shost(dev);
390 	struct fc_host_attrs *fc_host = shost_to_fc_host(shost);
445 		 "fc_wq_%d", shost->host_no);
453 		 "fc_dl_%d", shost->host_no);
462 	fc_bsg_hostadd(shost, fc_host);
471 	struct Scsi_Host *shost = dev_to_shost(dev);
472 	struct fc_host_attrs *fc_host = shost_to_fc_host(shost);
528  * @shost:		host the event occurred on
539 fc_host_post_fc_event(struct Scsi_Host *shost, u32 event_number,
577 	event->host_no = shost->host_no;
596 		__func__, shost->host_no,
605  * @shost:		host the event occurred on
614 fc_host_post_event(struct Scsi_Host *shost, u32 event_number,
617 	fc_host_post_fc_event(shost, event_number, event_code,
626  * @shost:		host the event occurred on
636 fc_host_post_vendor_event(struct Scsi_Host *shost, u32 event_number,
639 	fc_host_post_fc_event(shost, event_number, FCH_EVT_VENDOR_UNIQUE,
646  * @shost:		host the fc_rport is associated with
653 fc_find_rport_by_wwpn(struct Scsi_Host *shost, u64 wwpn)
658 	spin_lock_irqsave(shost->host_lock, flags);
660 	list_for_each_entry(rport, &fc_host_rports(shost), peers) {
665 			spin_unlock_irqrestore(shost->host_lock, flags);
670 	spin_unlock_irqrestore(shost->host_lock, flags);
753  * @shost:		host the FPIN was received on
758 fc_fpin_li_stats_update(struct Scsi_Host *shost, struct fc_tlv_desc *tlv)
763 	struct fc_host_attrs *fc_host = shost_to_fc_host(shost);
768 	rport = fc_find_rport_by_wwpn(shost,
782 			rport = fc_find_rport_by_wwpn(shost, wwpn);
801  * @shost:		host the FPIN was received on
806 fc_fpin_delivery_stats_update(struct Scsi_Host *shost,
811 	struct fc_host_attrs *fc_host = shost_to_fc_host(shost);
815 	rport = fc_find_rport_by_wwpn(shost,
832  * @shost:		host the FPIN was received on
837 fc_fpin_peer_congn_stats_update(struct Scsi_Host *shost,
848 	rport = fc_find_rport_by_wwpn(shost,
862 			rport = fc_find_rport_by_wwpn(shost, wwpn);
878  * @shost:		host the FPIN was received on
883 fc_fpin_congn_stats_update(struct Scsi_Host *shost,
886 	struct fc_host_attrs *fc_host = shost_to_fc_host(shost);
895  * @shost:		host the FPIN was received on
903 fc_host_fpin_rcv(struct Scsi_Host *shost, u32 fpin_len, char *fpin_buf,
923 			fc_fpin_li_stats_update(shost, tlv);
926 			fc_fpin_delivery_stats_update(shost, tlv);
929 			fc_fpin_peer_congn_stats_update(shost, tlv);
932 			fc_fpin_congn_stats_update(shost, tlv);
939 	fc_host_post_fc_event(shost, fc_get_event_number(),
992 	struct Scsi_Host *shost = rport_to_shost(rport);		\
993 	struct fc_internal *i = to_fc_internal(shost->transportt);	\
1010 	struct Scsi_Host *shost = rport_to_shost(rport);		\
1011 	struct fc_internal *i = to_fc_internal(shost->transportt);	\
1153 	struct Scsi_Host *shost = rport_to_shost(rport);
1154 	struct fc_internal *i = to_fc_internal(shost->transportt);
1420 	struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);	\
1421 	struct fc_internal *i = to_fc_internal(shost->transportt);	\
1475 	struct Scsi_Host *shost = vport_to_shost(vport);		\
1476 	struct fc_internal *i = to_fc_internal(shost->transportt);	\
1491 	struct Scsi_Host *shost = vport_to_shost(vport);		\
1492 	struct fc_internal *i = to_fc_internal(shost->transportt);	\
1510 	struct Scsi_Host *shost = vport_to_shost(vport);		\
1511 	struct fc_internal *i = to_fc_internal(shost->transportt);	\
1683 	struct Scsi_Host *shost = vport_to_shost(vport);
1686 	spin_lock_irqsave(shost->host_lock, flags);
1688 		spin_unlock_irqrestore(shost->host_lock, flags);
1692 	spin_unlock_irqrestore(shost->host_lock, flags);
1694 	fc_queue_work(shost, &vport->vport_delete_work);
1711 	struct Scsi_Host *shost = vport_to_shost(vport);
1712 	struct fc_internal *i = to_fc_internal(shost->transportt);
1743 	struct Scsi_Host *shost = transport_class_to_shost(dev);	\
1744 	struct fc_internal *i = to_fc_internal(shost->transportt);	\
1746 		i->f->get_host_##field(shost);				\
1747 	return snprintf(buf, sz, format_string, cast fc_host_##field(shost)); \
1757 	struct Scsi_Host *shost = transport_class_to_shost(dev);	\
1758 	struct fc_internal *i = to_fc_internal(shost->transportt);	\
1764 	i->f->set_host_##field(shost, val);				\
1774 	struct Scsi_Host *shost = transport_class_to_shost(dev);	\
1775 	struct fc_internal *i = to_fc_internal(shost->transportt);	\
1783 	memcpy(fc_host_##field(shost), buf, cnt);			\
1784 	i->f->set_host_##field(shost);					\
1810 	struct Scsi_Host *shost = transport_class_to_shost(dev);	\
1811 	struct fc_internal *i = to_fc_internal(shost->transportt);	\
1814 		i->f->get_host_##title(shost);				\
1815 	name = get_fc_##title##_name(fc_host_##title(shost));		\
1853 	struct Scsi_Host *shost = transport_class_to_shost(dev);	\
1854 	return snprintf(buf, sz, format_string, cast fc_host_##field(shost)); \
1888 	struct Scsi_Host *shost = transport_class_to_shost(dev);
1890 	if (fc_host_supported_classes(shost) == FC_COS_UNSPECIFIED)
1893 	return get_fc_cos_names(fc_host_supported_classes(shost), buf);
1902 	struct Scsi_Host *shost = transport_class_to_shost(dev);
1903 	return (ssize_t)show_fc_fc4s(buf, fc_host_supported_fc4s(shost));
1912 	struct Scsi_Host *shost = transport_class_to_shost(dev);
1914 	if (fc_host_supported_speeds(shost) == FC_PORTSPEED_UNKNOWN)
1917 	return get_fc_port_speed_names(fc_host_supported_speeds(shost), buf);
1945 	struct Scsi_Host *shost = transport_class_to_shost(dev);
1946 	struct fc_internal *i = to_fc_internal(shost->transportt);
1949 		i->f->get_host_active_fc4s(shost);
1951 	return (ssize_t)show_fc_fc4s(buf, fc_host_active_fc4s(shost));
1960 	struct Scsi_Host *shost = transport_class_to_shost(dev);
1961 	struct fc_internal *i = to_fc_internal(shost->transportt);
1964 		i->f->get_host_speed(shost);
1966 	if (fc_host_speed(shost) == FC_PORTSPEED_UNKNOWN)
1969 	return get_fc_port_speed_names(fc_host_speed(shost), buf);
1994 	struct Scsi_Host *shost = transport_class_to_shost(dev);
1997 	name = get_fc_tgtid_bind_type_name(fc_host_tgtid_bind_type(shost));
2010 	struct Scsi_Host *shost = transport_class_to_shost(dev);
2019 	if (val != fc_host_tgtid_bind_type(shost)) {
2020 		spin_lock_irqsave(shost->host_lock, flags);
2021 		while (!list_empty(&fc_host_rport_bindings(shost))) {
2023 				&fc_host_rport_bindings(shost), peers);
2026 			fc_queue_work(shost, &rport->rport_delete_work);
2028 		spin_unlock_irqrestore(shost->host_lock, flags);
2031 	fc_host_tgtid_bind_type(shost) = val;
2043 	struct Scsi_Host *shost = transport_class_to_shost(dev);
2044 	struct fc_internal *i = to_fc_internal(shost->transportt);
2049 		ret = i->f->issue_fc_host_lip(shost);
2064 	struct Scsi_Host *shost = transport_class_to_shost(dev);
2065 	struct fc_host_attrs *fc_host = shost_to_fc_host(shost);
2074 	fc_host_dev_loss_tmo(shost) = val;
2075 	spin_lock_irqsave(shost->host_lock, flags);
2078 	spin_unlock_irqrestore(shost->host_lock, flags);
2097 	struct Scsi_Host *shost = transport_class_to_shost(dev);
2098 	struct fc_internal *i = to_fc_internal(shost->transportt);
2107 		stats = (i->f->get_fc_host_stats)(shost);
2165 	struct Scsi_Host *shost = transport_class_to_shost(cd);		\
2166 	struct fc_host_attrs *fc_host = shost_to_fc_host(shost);	\
2197 	struct Scsi_Host *shost = transport_class_to_shost(dev);
2198 	struct fc_internal *i = to_fc_internal(shost->transportt);
2202 		i->f->reset_fc_host_stats(shost);
2314 	struct Scsi_Host *shost = transport_class_to_shost(dev);
2344 	stat = fc_vport_setup(shost, 0, &shost->shost_gendev, &vid, &vport);
2361 	struct Scsi_Host *shost = transport_class_to_shost(dev);
2362 	struct fc_host_attrs *fc_host = shost_to_fc_host(shost);
2385 	spin_lock_irqsave(shost->host_lock, flags);
2398 	spin_unlock_irqrestore(shost->host_lock, flags);
2413 	struct Scsi_Host *shost;
2419 	shost = dev_to_shost(dev);
2420 	if (!shost->transportt  || shost->transportt->host_attrs.ac.class
2424 	i = to_fc_internal(shost->transportt);
2432 	struct Scsi_Host *shost;
2438 	shost = dev_to_shost(dev->parent);
2439 	if (!shost->transportt  || shost->transportt->host_attrs.ac.class
2443 	i = to_fc_internal(shost->transportt);
2464 	struct Scsi_Host *shost;
2470 	shost = dev_to_shost(dev->parent);
2471 	if (!shost->transportt  || shost->transportt->host_attrs.ac.class
2475 	i = to_fc_internal(shost->transportt);
2497 	struct Scsi_Host *shost;
2504 	shost = vport_to_shost(vport);
2505 	if (!shost->transportt  || shost->transportt->host_attrs.ac.class
2509 	i = to_fc_internal(shost->transportt);
2548  * Called by fc_user_scan to locate an rport on the shost that
2553 fc_user_scan_tgt(struct Scsi_Host *shost, uint channel, uint id, u64 lun)
2558 	spin_lock_irqsave(shost->host_lock, flags);
2560 	list_for_each_entry(rport, &fc_host_rports(shost), peers) {
2570 			spin_unlock_irqrestore(shost->host_lock, flags);
2577 	spin_unlock_irqrestore(shost->host_lock, flags);
2587 fc_user_scan(struct Scsi_Host *shost, uint channel, uint id, u64 lun)
2592 	if (((channel != SCAN_WILD_CARD) && (channel > shost->max_channel)) ||
2593 	    ((id != SCAN_WILD_CARD) && (id >= shost->max_id)) ||
2594 	    ((lun != SCAN_WILD_CARD) && (lun > shost->max_lun)))
2599 		chhi = shost->max_channel + 1;
2607 		tgthi = shost->max_id;
2615 			fc_user_scan_tgt(shost, chlo, tgtlo, lun);
2657 	/* Transport uses the shost workq for scsi scanning */
2778  * @shost:	Pointer to Scsi_Host bound to fc_host.
2787 fc_queue_work(struct Scsi_Host *shost, struct work_struct *work)
2789 	if (unlikely(!fc_host_work_q(shost))) {
2792 			"when no workqueue created.\n", shost->hostt->name);
2798 	return queue_work(fc_host_work_q(shost), work);
2803  * @shost:	Pointer to Scsi_Host bound to fc_host.
2806 fc_flush_work(struct Scsi_Host *shost)
2808 	if (!fc_host_work_q(shost)) {
2811 			"when no workqueue created.\n", shost->hostt->name);
2816 	flush_workqueue(fc_host_work_q(shost));
2821  * @shost:	Pointer to Scsi_Host bound to fc_host.
2829 fc_queue_devloss_work(struct Scsi_Host *shost, struct delayed_work *work,
2832 	if (unlikely(!fc_host_devloss_work_q(shost))) {
2835 			"when no workqueue created.\n", shost->hostt->name);
2841 	return queue_delayed_work(fc_host_devloss_work_q(shost), work, delay);
2846  * @shost:	Pointer to Scsi_Host bound to fc_host.
2849 fc_flush_devloss(struct Scsi_Host *shost)
2851 	if (!fc_host_devloss_work_q(shost)) {
2854 			"when no workqueue created.\n", shost->hostt->name);
2859 	flush_workqueue(fc_host_devloss_work_q(shost));
2865  * @shost:	Which &Scsi_Host
2879 fc_remove_host(struct Scsi_Host *shost)
2884 	struct fc_host_attrs *fc_host = shost_to_fc_host(shost);
2887 	spin_lock_irqsave(shost->host_lock, flags);
2892 		fc_queue_work(shost, &vport->vport_delete_work);
2900 		fc_queue_work(shost, &rport->rport_delete_work);
2907 		fc_queue_work(shost, &rport->rport_delete_work);
2910 	spin_unlock_irqrestore(shost->host_lock, flags);
2913 	scsi_flush_work(shost);
2933 	struct Scsi_Host *shost = rport_to_shost(rport);
2934 	struct fc_internal *i = to_fc_internal(shost->transportt);
2973 	struct Scsi_Host *shost = rport_to_shost(rport);
2974 	struct fc_internal *i = to_fc_internal(shost->transportt);
2985 		scsi_flush_work(shost);
2992 	spin_lock_irqsave(shost->host_lock, flags);
2994 		spin_unlock_irqrestore(shost->host_lock, flags);
2996 			fc_flush_devloss(shost);
2998 			fc_flush_devloss(shost);
3000 		spin_lock_irqsave(shost->host_lock, flags);
3003 	spin_unlock_irqrestore(shost->host_lock, flags);
3016 	spin_lock_irqsave(shost->host_lock, flags);
3022 	spin_unlock_irqrestore(shost->host_lock, flags);
3032 	scsi_host_put(shost);			/* for fc_host->rport list */
3039  * @shost:	scsi host the remote port is connected to.
3040  * @channel:	Channel on shost port connected to.
3051 fc_remote_port_create(struct Scsi_Host *shost, int channel,
3054 	struct fc_host_attrs *fc_host = shost_to_fc_host(shost);
3055 	struct fc_internal *fci = to_fc_internal(shost->transportt);
3088 	spin_lock_irqsave(shost->host_lock, flags);
3097 	scsi_host_get(shost);			/* for fc_host->rport list */
3099 	spin_unlock_irqrestore(shost->host_lock, flags);
3103 	dev->parent = get_device(&shost->shost_gendev); /* parent reference */
3106 		     shost->host_no, channel, rport->number);
3117 	fc_bsg_rportadd(shost, rport);
3123 		scsi_queue_work(shost, &rport->scan_work);
3130 	spin_lock_irqsave(shost->host_lock, flags);
3132 	scsi_host_put(shost);			/* for fc_host->rport list */
3133 	spin_unlock_irqrestore(shost->host_lock, flags);
3141  * @shost:	scsi host the remote port is connected to.
3142  * @channel:	Channel on shost port connected to.
3178 fc_remote_port_add(struct Scsi_Host *shost, int channel,
3181 	struct fc_internal *fci = to_fc_internal(shost->transportt);
3182 	struct fc_host_attrs *fc_host = shost_to_fc_host(shost);
3188 	fc_flush_work(shost);
3195 	spin_lock_irqsave(shost->host_lock, flags);
3230 				spin_unlock_irqrestore(shost->host_lock, flags);
3263 					fc_flush_devloss(shost);
3265 					fc_flush_devloss(shost);
3267 				spin_lock_irqsave(shost->host_lock, flags);
3273 				spin_unlock_irqrestore(shost->host_lock, flags);
3279 					spin_lock_irqsave(shost->host_lock,
3282 					scsi_queue_work(shost,
3284 					spin_unlock_irqrestore(shost->host_lock,
3343 			spin_unlock_irqrestore(shost->host_lock, flags);
3350 	spin_unlock_irqrestore(shost->host_lock, flags);
3353 	rport = fc_remote_port_create(shost, channel, ids);
3415 	struct Scsi_Host *shost = rport_to_shost(rport);
3427 	spin_lock_irqsave(shost->host_lock, flags);
3431 		spin_unlock_irqrestore(shost->host_lock, flags);
3452 	spin_unlock_irqrestore(shost->host_lock, flags);
3454 	scsi_block_targets(shost, &rport->dev);
3459 		fc_queue_devloss_work(shost, &rport->fail_io_work,
3463 	fc_queue_devloss_work(shost, &rport->dev_loss_work, timeout * HZ);
3490 	struct Scsi_Host *shost = rport_to_shost(rport);
3491 	struct fc_host_attrs *fc_host = shost_to_fc_host(shost);
3495 	spin_lock_irqsave(shost->host_lock, flags);
3506 	spin_unlock_irqrestore(shost->host_lock, flags);
3522 			fc_flush_devloss(shost);
3524 			fc_flush_devloss(shost);
3526 		spin_lock_irqsave(shost->host_lock, flags);
3530 		spin_unlock_irqrestore(shost->host_lock, flags);
3533 		fc_flush_work(shost);
3537 		spin_lock_irqsave(shost->host_lock, flags);
3539 		scsi_queue_work(shost, &rport->scan_work);
3540 		spin_unlock_irqrestore(shost->host_lock, flags);
3557 	struct Scsi_Host *shost = rport_to_shost(rport);
3558 	struct fc_internal *i = to_fc_internal(shost->transportt);
3559 	struct fc_host_attrs *fc_host = shost_to_fc_host(shost);
3563 	spin_lock_irqsave(shost->host_lock, flags);
3579 		spin_unlock_irqrestore(shost->host_lock, flags);
3581 		fc_queue_work(shost, &rport->stgt_delete_work);
3587 		spin_unlock_irqrestore(shost->host_lock, flags);
3603 		fc_queue_work(shost, &rport->rport_delete_work);
3604 		spin_unlock_irqrestore(shost->host_lock, flags);
3634 	spin_unlock_irqrestore(shost->host_lock, flags);
3637 	spin_lock_irqsave(shost->host_lock, flags);
3665 		fc_queue_work(shost, &rport->stgt_delete_work);
3670 	spin_unlock_irqrestore(shost->host_lock, flags);
3712 	struct Scsi_Host *shost = rport_to_shost(rport);
3713 	struct fc_internal *i = to_fc_internal(shost->transportt);
3725 	spin_lock_irqsave(shost->host_lock, flags);
3727 	spin_unlock_irqrestore(shost->host_lock, flags);
3746 	struct Scsi_Host *shost = rport_to_shost(rport);
3749 	spin_lock_irqsave(shost->host_lock, flags);
3752 		spin_unlock_irqrestore(shost->host_lock, flags);
3754 		spin_lock_irqsave(shost->host_lock, flags);
3756 	spin_unlock_irqrestore(shost->host_lock, flags);
3814  * @shost:	scsi host the virtual port is connected to.
3815  * @channel:	Channel on shost port connected to.
3828 fc_vport_setup(struct Scsi_Host *shost, int channel, struct device *pdev,
3831 	struct fc_host_attrs *fc_host = shost_to_fc_host(shost);
3832 	struct fc_internal *fci = to_fc_internal(shost->transportt);
3859 	vport->shost = shost;
3864 	spin_lock_irqsave(shost->host_lock, flags);
3867 		spin_unlock_irqrestore(shost->host_lock, flags);
3874 	scsi_host_get(shost);			/* for fc_host->vport list */
3876 	spin_unlock_irqrestore(shost->host_lock, flags);
3883 		     shost->host_no, channel, vport->number);
3904 	if (pdev != &shost->shost_gendev) {
3905 		error = sysfs_create_link(&shost->shost_gendev.kobj,
3913 	spin_lock_irqsave(shost->host_lock, flags);
3915 	spin_unlock_irqrestore(shost->host_lock, flags);
3918 			"%s created via shost%d channel %d\n", dev_name(dev),
3919 			shost->host_no, channel);
3930 	spin_lock_irqsave(shost->host_lock, flags);
3932 	scsi_host_put(shost);			/* for fc_host->vport list */
3934 	spin_unlock_irqrestore(shost->host_lock, flags);
3943  * @shost:	scsi host the virtual port is connected to.
3944  * @channel:	channel on shost port connected to.
3952 fc_vport_create(struct Scsi_Host *shost, int channel,
3958 	stat = fc_vport_setup(shost, channel, &shost->shost_gendev,
3969  * the vport from the shost and object tree.
3977 	struct Scsi_Host *shost = vport_to_shost(vport);
3978 	struct fc_host_attrs *fc_host = shost_to_fc_host(shost);
3979 	struct fc_internal *i = to_fc_internal(shost->transportt);
3989 	spin_lock_irqsave(shost->host_lock, flags);
3995 		scsi_host_put(shost);		/* for fc_host->vport list */
3997 	spin_unlock_irqrestore(shost->host_lock, flags);
4002 	if (dev->parent != &shost->shost_gendev)
4003 		sysfs_remove_link(&shost->shost_gendev.kobj, dev_name(dev));
4034 			"shost%d channel %d - error %d\n", __func__,
4035 			dev_name(&vport->dev), vport->shost->host_no,
4052 	struct Scsi_Host *shost = fc_bsg_to_shost(job);
4054 	struct fc_internal *i = to_fc_internal(shost->transportt);
4081  * @shost:	scsi host rport attached to
4084 static int fc_bsg_host_dispatch(struct Scsi_Host *shost, struct bsg_job *job)
4086 	struct fc_internal *i = to_fc_internal(shost->transportt);
4130 		if ((shost->hostt->vendor_id == 0L) ||
4132 			shost->hostt->vendor_id)) {
4174  * @shost:	scsi host rport attached to
4177 static int fc_bsg_rport_dispatch(struct Scsi_Host *shost, struct bsg_job *job)
4179 	struct fc_internal *i = to_fc_internal(shost->transportt);
4229 	struct Scsi_Host *shost = fc_bsg_to_shost(job);
4232 		return fc_bsg_rport_dispatch(shost, job);
4234 		return fc_bsg_host_dispatch(shost, job);
4271  * @shost:	shost for fc_host
4275 fc_bsg_hostadd(struct Scsi_Host *shost, struct fc_host_attrs *fc_host)
4277 	struct device *dev = &shost->shost_gendev;
4278 	struct fc_internal *i = to_fc_internal(shost->transportt);
4288 		 "fc_host%d", shost->host_no);
4295 			shost->host_no);
4298 	__scsi_init_queue(shost, q);
4306  * @shost:	shost that rport is attached to
4310 fc_bsg_rportadd(struct Scsi_Host *shost, struct fc_rport *rport)
4313 	struct fc_internal *i = to_fc_internal(shost->transportt);
4327 	__scsi_init_queue(shost, q);