From 70d53b046a6221e3ceb3bd8eaa807ef6a1c53762 Mon Sep 17 00:00:00 2001 From: Joe Eykholt Date: Fri, 28 Jan 2011 16:04:18 -0800 Subject: [SCSI] libfc: add hook to notify providers of local port changes When an SCST provider is registered, it needs to know what local ports are available for configuration as targets. Add a notifier chain that is invoked when any local port that is added or deleted. Maintain a global list of local ports and add an interator function that calls a given function for every existing local port. This is used when first loading a provider. Signed-off-by: Joe Eykholt Signed-off-by: Robert Love Signed-off-by: James Bottomley --- include/scsi/libfc.h | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) (limited to 'include/scsi') 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 -- cgit v1.1