diff options
| author | Joe Eykholt <jeykholt@cisco.com> | 2011-01-28 16:04:18 -0800 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2011-02-12 11:02:20 -0600 |
| commit | 70d53b046a6221e3ceb3bd8eaa807ef6a1c53762 (patch) | |
| tree | f1ab4e0de20a8db091ea04df564a03a689698b40 /include/scsi | |
| parent | baf9fdf076a8976431b5de565aef2b98816caecf (diff) | |
| download | lwn-70d53b046a6221e3ceb3bd8eaa807ef6a1c53762.tar.gz lwn-70d53b046a6221e3ceb3bd8eaa807ef6a1c53762.zip | |
[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.h | 14 |
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 |