diff options
| -rw-r--r-- | drivers/scsi/libfc/fc_libfc.c | 41 | ||||
| -rw-r--r-- | drivers/scsi/libfc/fc_libfc.h | 2 | ||||
| -rw-r--r-- | drivers/scsi/libfc/fc_lport.c | 2 | ||||
| -rw-r--r-- | include/scsi/libfc.h | 14 |
4 files changed, 58 insertions, 1 deletions
diff --git a/drivers/scsi/libfc/fc_libfc.c b/drivers/scsi/libfc/fc_libfc.c index ae3abef..5e40dab 100644 --- a/drivers/scsi/libfc/fc_libfc.c +++ b/drivers/scsi/libfc/fc_libfc.c @@ -36,6 +36,10 @@ module_param_named(debug_logging, fc_debug_logging, int, S_IRUGO|S_IWUSR); MODULE_PARM_DESC(debug_logging, "a bit mask of logging levels"); DEFINE_MUTEX(fc_prov_mutex); +static LIST_HEAD(fc_local_ports); +struct blocking_notifier_head fc_lport_notifier_head = + BLOCKING_NOTIFIER_INIT(fc_lport_notifier_head); +EXPORT_SYMBOL(fc_lport_notifier_head); /* * Providers which primarily send requests and PRLIs. @@ -228,6 +232,17 @@ void fc_fill_reply_hdr(struct fc_frame *fp, const struct fc_frame *in_fp, } EXPORT_SYMBOL(fc_fill_reply_hdr); +void fc_lport_iterate(void (*notify)(struct fc_lport *, void *), void *arg) +{ + struct fc_lport *lport; + + mutex_lock(&fc_prov_mutex); + list_for_each_entry(lport, &fc_local_ports, lport_list) + notify(lport, arg); + mutex_unlock(&fc_prov_mutex); +} +EXPORT_SYMBOL(fc_lport_iterate); + /** * fc_fc4_register_provider() - register FC-4 upper-level provider. * @type: FC-4 type, such as FC_TYPE_FCP @@ -270,3 +285,29 @@ void fc_fc4_deregister_provider(enum fc_fh_type type, struct fc4_prov *prov) synchronize_rcu(); } EXPORT_SYMBOL(fc_fc4_deregister_provider); + +/** + * fc_fc4_add_lport() - add new local port to list and run notifiers. + * @lport: The new local port. + */ +void fc_fc4_add_lport(struct fc_lport *lport) +{ + mutex_lock(&fc_prov_mutex); + list_add_tail(&lport->lport_list, &fc_local_ports); + blocking_notifier_call_chain(&fc_lport_notifier_head, + FC_LPORT_EV_ADD, lport); + mutex_unlock(&fc_prov_mutex); +} + +/** + * fc_fc4_del_lport() - remove local port from list and run notifiers. + * @lport: The new local port. + */ +void fc_fc4_del_lport(struct fc_lport *lport) +{ + mutex_lock(&fc_prov_mutex); + list_del(&lport->lport_list); + blocking_notifier_call_chain(&fc_lport_notifier_head, + FC_LPORT_EV_DEL, lport); + mutex_unlock(&fc_prov_mutex); +} diff --git a/drivers/scsi/libfc/fc_libfc.h b/drivers/scsi/libfc/fc_libfc.h index 205de28..8496f70 100644 --- a/drivers/scsi/libfc/fc_libfc.h +++ b/drivers/scsi/libfc/fc_libfc.h @@ -123,6 +123,8 @@ void fc_destroy_fcp(void); * Internal libfc functions */ const char *fc_els_resp_type(struct fc_frame *); +extern void fc_fc4_add_lport(struct fc_lport *); +extern void fc_fc4_del_lport(struct fc_lport *); /* * Copies a buffer into an sg list diff --git a/drivers/scsi/libfc/fc_lport.c b/drivers/scsi/libfc/fc_lport.c index e2cd087..e0ef814 100644 --- a/drivers/scsi/libfc/fc_lport.c +++ b/drivers/scsi/libfc/fc_lport.c @@ -633,6 +633,7 @@ int fc_lport_destroy(struct fc_lport *lport) lport->tt.fcp_abort_io(lport); lport->tt.disc_stop_final(lport); lport->tt.exch_mgr_reset(lport, 0, 0); + fc_fc4_del_lport(lport); return 0; } EXPORT_SYMBOL(fc_lport_destroy); @@ -1633,6 +1634,7 @@ int fc_lport_init(struct fc_lport *lport) fc_host_supported_speeds(lport->host) |= FC_PORTSPEED_1GBIT; if (lport->link_supported_speeds & FC_PORTSPEED_10GBIT) fc_host_supported_speeds(lport->host) |= FC_PORTSPEED_10GBIT; + fc_fc4_add_lport(lport); return 0; } diff --git a/include/scsi/libfc.h b/include/scsi/libfc.h index a9aff25..79d1c76 100644 --- a/include/scsi/libfc.h +++ b/include/scsi/libfc.h @@ -763,6 +763,15 @@ struct fc_disc { enum fc_disc_event); }; +/* + * Local port notifier and events. + */ +extern struct blocking_notifier_head fc_lport_notifier_head; +enum fc_lport_event { + FC_LPORT_EV_ADD, + FC_LPORT_EV_DEL, +}; + /** * struct fc_lport - Local port * @host: The SCSI host associated with a local port @@ -803,9 +812,10 @@ struct fc_disc { * @lso_max: The maximum large offload send size * @fcts: FC-4 type mask * @lp_mutex: Mutex to protect the local port - * @list: Handle for list of local ports + * @list: Linkage on list of vport peers * @retry_work: Handle to local port for delayed retry context * @prov: Pointers available for use by passive FC-4 providers + * @lport_list: Linkage on module-wide list of local ports */ struct fc_lport { /* Associations */ @@ -862,6 +872,7 @@ struct fc_lport { struct list_head list; struct delayed_work retry_work; void *prov[FC_FC4_PROV_SIZE]; + struct list_head lport_list; }; /** @@ -1016,6 +1027,7 @@ struct fc_lport *libfc_vport_create(struct fc_vport *, int privsize); struct fc_lport *fc_vport_id_lookup(struct fc_lport *, u32 port_id); int fc_lport_bsg_request(struct fc_bsg_job *); void fc_lport_set_local_id(struct fc_lport *, u32 port_id); +void fc_lport_iterate(void (*func)(struct fc_lport *, void *), void *); /* * REMOTE PORT LAYER |