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authorJoe Eykholt <jeykholt@cisco.com>2011-01-28 16:04:18 -0800
committerJames Bottomley <James.Bottomley@suse.de>2011-02-12 11:02:20 -0600
commit70d53b046a6221e3ceb3bd8eaa807ef6a1c53762 (patch)
treef1ab4e0de20a8db091ea04df564a03a689698b40 /include/scsi
parentbaf9fdf076a8976431b5de565aef2b98816caecf (diff)
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[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 <jeykholt@cisco.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'include/scsi')
-rw-r--r--include/scsi/libfc.h14
1 files changed, 13 insertions, 1 deletions
diff --git a/include/scsi/libfc.h b/include/scsi/libfc.h
index a9aff25a399b..79d1c76b4269 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