diff options
author | Robert Love <robert.w.love@intel.com> | 2012-02-11 02:18:46 +0100 |
---|---|---|
committer | James Bottomley <JBottomley@Parallels.com> | 2012-02-19 16:25:41 +0100 |
commit | 1a8ef414d97bf3f293e286f02002f8db768f9867 (patch) | |
tree | 2df0c754ecedb356bd1fc574eed71b6490c4b8f0 /drivers/scsi/fcoe | |
parent | [SCSI] fcoe: Do not switch context in vport_delete callback (diff) | |
download | linux-1a8ef414d97bf3f293e286f02002f8db768f9867.tar.xz linux-1a8ef414d97bf3f293e286f02002f8db768f9867.zip |
[SCSI] fcoe: Remove reference counting on 'stuct fcoe_interface'
The reference counting was necessary on these instances
because it was possible for NPIV ports to be destroyed
after the N_Port. A previous patch ensures that all NPIV
ports are destroyed before the N_Port making the need to
track references on the interface unnecessary.
Signed-off-by: Robert Love <robert.w.love@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/fcoe')
-rw-r--r-- | drivers/scsi/fcoe/fcoe.c | 48 | ||||
-rw-r--r-- | drivers/scsi/fcoe/fcoe.h | 3 |
2 files changed, 5 insertions, 46 deletions
diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c index 5126685ab982..278958157e24 100644 --- a/drivers/scsi/fcoe/fcoe.c +++ b/drivers/scsi/fcoe/fcoe.c @@ -384,7 +384,6 @@ static struct fcoe_interface *fcoe_interface_create(struct net_device *netdev, } dev_hold(netdev); - kref_init(&fcoe->kref); /* * Initialize FIP. @@ -412,42 +411,6 @@ out: } /** - * fcoe_interface_release() - fcoe_port kref release function - * @kref: Embedded reference count in an fcoe_interface struct - */ -static void fcoe_interface_release(struct kref *kref) -{ - struct fcoe_interface *fcoe; - struct net_device *netdev; - - fcoe = container_of(kref, struct fcoe_interface, kref); - netdev = fcoe->netdev; - /* tear-down the FCoE controller */ - fcoe_ctlr_destroy(&fcoe->ctlr); - kfree(fcoe); - dev_put(netdev); - module_put(THIS_MODULE); -} - -/** - * fcoe_interface_get() - Get a reference to a FCoE interface - * @fcoe: The FCoE interface to be held - */ -static inline void fcoe_interface_get(struct fcoe_interface *fcoe) -{ - kref_get(&fcoe->kref); -} - -/** - * fcoe_interface_put() - Put a reference to a FCoE interface - * @fcoe: The FCoE interface to be released - */ -static inline void fcoe_interface_put(struct fcoe_interface *fcoe) -{ - kref_put(&fcoe->kref, fcoe_interface_release); -} - -/** * fcoe_interface_cleanup() - Clean up a FCoE interface * @fcoe: The FCoE interface to be cleaned up * @@ -494,7 +457,11 @@ static void fcoe_interface_cleanup(struct fcoe_interface *fcoe) rtnl_unlock(); /* Release the self-reference taken during fcoe_interface_create() */ - fcoe_interface_put(fcoe); + /* tear-down the FCoE controller */ + fcoe_ctlr_destroy(fip); + kfree(fcoe); + dev_put(netdev); + module_put(THIS_MODULE); } /** @@ -976,9 +943,6 @@ static void fcoe_if_destroy(struct fc_lport *lport) dev_uc_del(netdev, port->data_src_addr); rtnl_unlock(); - /* Release reference held in fcoe_if_create() */ - fcoe_interface_put(fcoe); - /* Free queued packets for the per-CPU receive threads */ fcoe_percpu_clean(lport); @@ -1168,7 +1132,6 @@ static struct fc_lport *fcoe_if_create(struct fcoe_interface *fcoe, goto out_lp_destroy; } - fcoe_interface_get(fcoe); return lport; out_lp_destroy: @@ -2113,7 +2076,6 @@ static void fcoe_destroy_work(struct work_struct *work) fcoe = port->priv; fcoe_if_destroy(port->lport); - fcoe_interface_cleanup(fcoe); mutex_unlock(&fcoe_config_mutex); diff --git a/drivers/scsi/fcoe/fcoe.h b/drivers/scsi/fcoe/fcoe.h index bcc89e639495..3c2733a12aa1 100644 --- a/drivers/scsi/fcoe/fcoe.h +++ b/drivers/scsi/fcoe/fcoe.h @@ -71,8 +71,6 @@ do { \ * @ctlr: The FCoE controller (for FIP) * @oem: The offload exchange manager for all local port * instances associated with this port - * @kref: The kernel reference - * * This structure is 1:1 with a net devive. */ struct fcoe_interface { @@ -83,7 +81,6 @@ struct fcoe_interface { struct packet_type fip_packet_type; struct fcoe_ctlr ctlr; struct fc_exch_mgr *oem; - struct kref kref; }; #define fcoe_from_ctlr(fip) container_of(fip, struct fcoe_interface, ctlr) |