diff options
Diffstat (limited to 'drivers/scsi/fcoe/fcoe.c')
| -rw-r--r-- | drivers/scsi/fcoe/fcoe.c | 147 |
1 files changed, 132 insertions, 15 deletions
diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c index 9bd982d2c07..21927f7952d 100644 --- a/drivers/scsi/fcoe/fcoe.c +++ b/drivers/scsi/fcoe/fcoe.c @@ -117,6 +117,11 @@ static int fcoe_destroy(struct net_device *netdev); static int fcoe_enable(struct net_device *netdev); static int fcoe_disable(struct net_device *netdev); +/* fcoe_syfs control interface handlers */ +static int fcoe_ctlr_alloc(struct net_device *netdev); +static int fcoe_ctlr_enabled(struct fcoe_ctlr_device *cdev); + + static struct fc_seq *fcoe_elsct_send(struct fc_lport *, u32 did, struct fc_frame *, unsigned int op, @@ -155,6 +160,8 @@ static void fcoe_ctlr_get_lesb(struct fcoe_ctlr_device *); static void fcoe_fcf_get_vlan_id(struct fcoe_fcf_device *); static struct fcoe_sysfs_function_template fcoe_sysfs_templ = { + .set_fcoe_ctlr_mode = fcoe_ctlr_set_fip_mode, + .set_fcoe_ctlr_enabled = fcoe_ctlr_enabled, .get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb, .get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb, .get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb, @@ -1963,6 +1970,7 @@ static int fcoe_dcb_app_notification(struct notifier_block *notifier, static int fcoe_device_notification(struct notifier_block *notifier, ulong event, void *ptr) { + struct fcoe_ctlr_device *cdev; struct fc_lport *lport = NULL; struct net_device *netdev = ptr; struct fcoe_ctlr *ctlr; @@ -2019,13 +2027,29 @@ static int fcoe_device_notification(struct notifier_block *notifier, fcoe_link_speed_update(lport); - if (link_possible && !fcoe_link_ok(lport)) - fcoe_ctlr_link_up(ctlr); - else if (fcoe_ctlr_link_down(ctlr)) { - stats = per_cpu_ptr(lport->stats, get_cpu()); - stats->LinkFailureCount++; - put_cpu(); - fcoe_clean_pending_queue(lport); + cdev = fcoe_ctlr_to_ctlr_dev(ctlr); + + if (link_possible && !fcoe_link_ok(lport)) { + switch (cdev->enabled) { + case FCOE_CTLR_DISABLED: + pr_info("Link up while interface is disabled.\n"); + break; + case FCOE_CTLR_ENABLED: + case FCOE_CTLR_UNUSED: + fcoe_ctlr_link_up(ctlr); + }; + } else if (fcoe_ctlr_link_down(ctlr)) { + switch (cdev->enabled) { + case FCOE_CTLR_DISABLED: + pr_info("Link down while interface is disabled.\n"); + break; + case FCOE_CTLR_ENABLED: + case FCOE_CTLR_UNUSED: + stats = per_cpu_ptr(lport->stats, get_cpu()); + stats->LinkFailureCount++; + put_cpu(); + fcoe_clean_pending_queue(lport); + }; } out: return rc; @@ -2038,6 +2062,8 @@ out: * Called from fcoe transport. * * Returns: 0 for success + * + * Deprecated: use fcoe_ctlr_enabled() */ static int fcoe_disable(struct net_device *netdev) { @@ -2097,6 +2123,33 @@ out: } /** + * fcoe_ctlr_enabled() - Enable or disable an FCoE Controller + * @cdev: The FCoE Controller that is being enabled or disabled + * + * fcoe_sysfs will ensure that the state of 'enabled' has + * changed, so no checking is necessary here. This routine simply + * calls fcoe_enable or fcoe_disable, both of which are deprecated. + * When those routines are removed the functionality can be merged + * here. + */ +static int fcoe_ctlr_enabled(struct fcoe_ctlr_device *cdev) +{ + struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev); + struct fc_lport *lport = ctlr->lp; + struct net_device *netdev = fcoe_netdev(lport); + + switch (cdev->enabled) { + case FCOE_CTLR_ENABLED: + return fcoe_enable(netdev); + case FCOE_CTLR_DISABLED: + return fcoe_disable(netdev); + case FCOE_CTLR_UNUSED: + default: + return -ENOTSUPP; + }; +} + +/** * fcoe_destroy() - Destroy a FCoE interface * @netdev : The net_device object the Ethernet interface to create on * @@ -2203,16 +2256,26 @@ static void fcoe_dcb_create(struct fcoe_interface *fcoe) #endif } +enum fcoe_create_link_state { + FCOE_CREATE_LINK_DOWN, + FCOE_CREATE_LINK_UP, +}; + /** - * fcoe_create() - Create a fcoe interface - * @netdev : The net_device object the Ethernet interface to create on - * @fip_mode: The FIP mode for this creation + * _fcoe_create() - (internal) Create a fcoe interface + * @netdev : The net_device object the Ethernet interface to create on + * @fip_mode: The FIP mode for this creation + * @link_state: The ctlr link state on creation * - * Called from fcoe transport + * Called from either the libfcoe 'create' module parameter + * via fcoe_create or from fcoe_syfs's ctlr_create file. * - * Returns: 0 for success + * libfcoe's 'create' module parameter is deprecated so some + * consolidation of code can be done when that interface is + * removed. */ -static int fcoe_create(struct net_device *netdev, enum fip_state fip_mode) +static int _fcoe_create(struct net_device *netdev, enum fip_state fip_mode, + enum fcoe_create_link_state link_state) { int rc = 0; struct fcoe_ctlr_device *ctlr_dev; @@ -2259,7 +2322,26 @@ static int fcoe_create(struct net_device *netdev, enum fip_state fip_mode) /* start FIP Discovery and FLOGI */ lport->boot_time = jiffies; fc_fabric_login(lport); - if (!fcoe_link_ok(lport)) { + + /* + * If the fcoe_ctlr_device is to be set to DISABLED + * it must be done after the lport is added to the + * hostlist, but before the rtnl_lock is released. + * This is because the rtnl_lock protects the + * hostlist that fcoe_device_notification uses. If + * the FCoE Controller is intended to be created + * DISABLED then 'enabled' needs to be considered + * handling link events. 'enabled' must be set + * before the lport can be found in the hostlist + * when a link up event is received. + */ + if (link_state == FCOE_CREATE_LINK_UP) + ctlr_dev->enabled = FCOE_CTLR_ENABLED; + else + ctlr_dev->enabled = FCOE_CTLR_DISABLED; + + if (link_state == FCOE_CREATE_LINK_UP && + !fcoe_link_ok(lport)) { rtnl_unlock(); fcoe_ctlr_link_up(ctlr); mutex_unlock(&fcoe_config_mutex); @@ -2274,6 +2356,37 @@ out_nortnl: } /** + * fcoe_create() - Create a fcoe interface + * @netdev : The net_device object the Ethernet interface to create on + * @fip_mode: The FIP mode for this creation + * + * Called from fcoe transport + * + * Returns: 0 for success + */ +static int fcoe_create(struct net_device *netdev, enum fip_state fip_mode) +{ + return _fcoe_create(netdev, fip_mode, FCOE_CREATE_LINK_UP); +} + +/** + * fcoe_ctlr_alloc() - Allocate a fcoe interface from fcoe_sysfs + * @netdev: The net_device to be used by the allocated FCoE Controller + * + * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr + * in a link_down state. The allows the user an opportunity to configure + * the FCoE Controller from sysfs before enabling the FCoE Controller. + * + * Creating in with this routine starts the FCoE Controller in Fabric + * mode. The user can change to VN2VN or another mode before enabling. + */ +static int fcoe_ctlr_alloc(struct net_device *netdev) +{ + return _fcoe_create(netdev, FIP_MODE_FABRIC, + FCOE_CREATE_LINK_DOWN); +} + +/** * fcoe_link_speed_update() - Update the supported and actual link speeds * @lport: The local port to update speeds for * @@ -2374,10 +2487,13 @@ static int fcoe_reset(struct Scsi_Host *shost) struct fcoe_port *port = lport_priv(lport); struct fcoe_interface *fcoe = port->priv; struct fcoe_ctlr *ctlr = fcoe_to_ctlr(fcoe); + struct fcoe_ctlr_device *cdev = fcoe_ctlr_to_ctlr_dev(ctlr); fcoe_ctlr_link_down(ctlr); fcoe_clean_pending_queue(ctlr->lp); - if (!fcoe_link_ok(ctlr->lp)) + + if (cdev->enabled != FCOE_CTLR_DISABLED && + !fcoe_link_ok(ctlr->lp)) fcoe_ctlr_link_up(ctlr); return 0; } @@ -2450,6 +2566,7 @@ static struct fcoe_transport fcoe_sw_transport = { .attached = false, .list = LIST_HEAD_INIT(fcoe_sw_transport.list), .match = fcoe_match, + .alloc = fcoe_ctlr_alloc, .create = fcoe_create, .destroy = fcoe_destroy, .enable = fcoe_enable, |