diff options
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/fcoe/fcoe.c | 31 |
1 files changed, 19 insertions, 12 deletions
diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c index 43added0a17c..c9a0346e493a 100644 --- a/drivers/scsi/fcoe/fcoe.c +++ b/drivers/scsi/fcoe/fcoe.c @@ -616,9 +616,6 @@ static void fcoe_if_destroy(struct fc_lport *lport) /* Logout of the fabric */ fc_fabric_logoff(lport); - /* Remove the instance from fcoe's list */ - fcoe_hostlist_remove(lport); - /* Cleanup the fc_lport */ fc_lport_destroy(lport); fc_fcp_destroy(lport); @@ -757,11 +754,13 @@ static struct fc_lport *fcoe_if_create(struct fcoe_interface *fcoe, /* * fcoe_em_alloc() and fcoe_hostlist_add() both - * need to be atomic under fcoe_hostlist_lock + * need to be atomic with respect to other changes to the hostlist * since fcoe_em_alloc() looks for an existing EM * instance on host list updated by fcoe_hostlist_add(). + * + * This is currently handled through the fcoe_config_mutex begin held. */ - write_lock(&fcoe_hostlist_lock); + /* lport exch manager allocation */ rc = fcoe_em_config(lport); if (rc) { @@ -770,10 +769,6 @@ static struct fc_lport *fcoe_if_create(struct fcoe_interface *fcoe, goto out_lp_destroy; } - /* add to lports list */ - fcoe_hostlist_add(lport); - write_unlock(&fcoe_hostlist_lock); - dev_hold(netdev); fcoe_interface_get(fcoe); return lport; @@ -1713,6 +1708,8 @@ static int fcoe_destroy(const char *buffer, struct kernel_param *kp) rc = -ENODEV; goto out_putdev; } + /* Remove the instance from fcoe's list */ + fcoe_hostlist_remove(lport); port = lport_priv(lport); fcoe = port->fcoe; fcoe_if_destroy(lport); @@ -1782,6 +1779,9 @@ static int fcoe_create(const char *buffer, struct kernel_param *kp) /* Make this the "master" N_Port */ fcoe->ctlr.lp = lport; + /* add to lports list */ + fcoe_hostlist_add(lport); + /* start FIP Discovery and FLOGI */ lport->boot_time = jiffies; fc_fabric_login(lport); @@ -1954,8 +1954,6 @@ struct fc_lport *fcoe_hostlist_lookup(const struct net_device *netdev) * fcoe_hostlist_add() - Add a lport to lports list * @lp: ptr to the fc_lport to be added * - * Called with write fcoe_hostlist_lock held. - * * Returns: 0 for success */ int fcoe_hostlist_add(const struct fc_lport *lport) @@ -1963,12 +1961,14 @@ int fcoe_hostlist_add(const struct fc_lport *lport) struct fcoe_interface *fcoe; struct fcoe_port *port; + write_lock_bh(&fcoe_hostlist_lock); fcoe = fcoe_hostlist_lookup_port(fcoe_netdev(lport)); if (!fcoe) { port = lport_priv(lport); fcoe = port->fcoe; list_add_tail(&fcoe->list, &fcoe_hostlist); } + write_unlock_bh(&fcoe_hostlist_lock); return 0; } @@ -2045,14 +2045,21 @@ static void __exit fcoe_exit(void) { unsigned int cpu; struct fcoe_interface *fcoe, *tmp; + LIST_HEAD(local_list); mutex_lock(&fcoe_config_mutex); fcoe_dev_cleanup(); /* releases the associated fcoe hosts */ - list_for_each_entry_safe(fcoe, tmp, &fcoe_hostlist, list) + write_lock_bh(&fcoe_hostlist_lock); + list_splice_init(&fcoe_hostlist, &local_list); + write_unlock_bh(&fcoe_hostlist_lock); + + list_for_each_entry_safe(fcoe, tmp, &local_list, list) { + list_del(&fcoe->list); fcoe_if_destroy(fcoe->ctlr.lp); + } unregister_hotcpu_notifier(&fcoe_cpu_notifier); |