diff options
Diffstat (limited to 'drivers/scsi/fcoe/fcoe_transport.c')
| -rw-r--r-- | drivers/scsi/fcoe/fcoe_transport.c | 199 |
1 files changed, 194 insertions, 5 deletions
diff --git a/drivers/scsi/fcoe/fcoe_transport.c b/drivers/scsi/fcoe/fcoe_transport.c index ac76d8a042d7..f3a5a53e8631 100644 --- a/drivers/scsi/fcoe/fcoe_transport.c +++ b/drivers/scsi/fcoe/fcoe_transport.c @@ -83,6 +83,50 @@ static struct notifier_block libfcoe_notifier = { .notifier_call = libfcoe_device_notification, }; +/** + * fcoe_link_speed_update() - Update the supported and actual link speeds + * @lport: The local port to update speeds for + * + * Returns: 0 if the ethtool query was successful + * -1 if the ethtool query failed + */ +int fcoe_link_speed_update(struct fc_lport *lport) +{ + struct net_device *netdev = fcoe_get_netdev(lport); + struct ethtool_cmd ecmd; + + if (!__ethtool_get_settings(netdev, &ecmd)) { + lport->link_supported_speeds &= + ~(FC_PORTSPEED_1GBIT | FC_PORTSPEED_10GBIT); + if (ecmd.supported & (SUPPORTED_1000baseT_Half | + SUPPORTED_1000baseT_Full)) + lport->link_supported_speeds |= FC_PORTSPEED_1GBIT; + if (ecmd.supported & SUPPORTED_10000baseT_Full) + lport->link_supported_speeds |= + FC_PORTSPEED_10GBIT; + switch (ethtool_cmd_speed(&ecmd)) { + case SPEED_1000: + lport->link_speed = FC_PORTSPEED_1GBIT; + break; + case SPEED_10000: + lport->link_speed = FC_PORTSPEED_10GBIT; + break; + } + return 0; + } + return -1; +} +EXPORT_SYMBOL_GPL(fcoe_link_speed_update); + +/** + * __fcoe_get_lesb() - Get the Link Error Status Block (LESB) for a given lport + * @lport: The local port to update speeds for + * @fc_lesb: Pointer to the LESB to be filled up + * @netdev: Pointer to the netdev that is associated with the lport + * + * Note, the Link Error Status Block (LESB) for FCoE is defined in FC-BB-6 + * Clause 7.11 in v1.04. + */ void __fcoe_get_lesb(struct fc_lport *lport, struct fc_els_lesb *fc_lesb, struct net_device *netdev) @@ -112,6 +156,51 @@ void __fcoe_get_lesb(struct fc_lport *lport, } EXPORT_SYMBOL_GPL(__fcoe_get_lesb); +/** + * fcoe_get_lesb() - Fill the FCoE Link Error Status Block + * @lport: the local port + * @fc_lesb: the link error status block + */ +void fcoe_get_lesb(struct fc_lport *lport, + struct fc_els_lesb *fc_lesb) +{ + struct net_device *netdev = fcoe_get_netdev(lport); + + __fcoe_get_lesb(lport, fc_lesb, netdev); +} +EXPORT_SYMBOL_GPL(fcoe_get_lesb); + +/** + * fcoe_ctlr_get_lesb() - Get the Link Error Status Block (LESB) for a given + * fcoe controller device + * @ctlr_dev: The given fcoe controller device + * + */ +void fcoe_ctlr_get_lesb(struct fcoe_ctlr_device *ctlr_dev) +{ + struct fcoe_ctlr *fip = fcoe_ctlr_device_priv(ctlr_dev); + struct net_device *netdev = fcoe_get_netdev(fip->lp); + struct fcoe_fc_els_lesb *fcoe_lesb; + struct fc_els_lesb fc_lesb; + + __fcoe_get_lesb(fip->lp, &fc_lesb, netdev); + fcoe_lesb = (struct fcoe_fc_els_lesb *)(&fc_lesb); + + ctlr_dev->lesb.lesb_link_fail = + ntohl(fcoe_lesb->lesb_link_fail); + ctlr_dev->lesb.lesb_vlink_fail = + ntohl(fcoe_lesb->lesb_vlink_fail); + ctlr_dev->lesb.lesb_miss_fka = + ntohl(fcoe_lesb->lesb_miss_fka); + ctlr_dev->lesb.lesb_symb_err = + ntohl(fcoe_lesb->lesb_symb_err); + ctlr_dev->lesb.lesb_err_block = + ntohl(fcoe_lesb->lesb_err_block); + ctlr_dev->lesb.lesb_fcs_error = + ntohl(fcoe_lesb->lesb_fcs_error); +} +EXPORT_SYMBOL_GPL(fcoe_ctlr_get_lesb); + void fcoe_wwn_to_str(u64 wwn, char *buf, int len) { u8 wwpn[8]; @@ -627,6 +716,110 @@ static int libfcoe_device_notification(struct notifier_block *notifier, return NOTIFY_OK; } +ssize_t fcoe_ctlr_create_store(struct bus_type *bus, + const char *buf, size_t count) +{ + struct net_device *netdev = NULL; + struct fcoe_transport *ft = NULL; + struct fcoe_ctlr_device *ctlr_dev = NULL; + int rc = 0; + int err; + + mutex_lock(&ft_mutex); + + netdev = fcoe_if_to_netdev(buf); + if (!netdev) { + LIBFCOE_TRANSPORT_DBG("Invalid device %s.\n", buf); + rc = -ENODEV; + goto out_nodev; + } + + ft = fcoe_netdev_map_lookup(netdev); + if (ft) { + LIBFCOE_TRANSPORT_DBG("transport %s already has existing " + "FCoE instance on %s.\n", + ft->name, netdev->name); + rc = -EEXIST; + goto out_putdev; + } + + ft = fcoe_transport_lookup(netdev); + if (!ft) { + LIBFCOE_TRANSPORT_DBG("no FCoE transport found for %s.\n", + netdev->name); + rc = -ENODEV; + goto out_putdev; + } + + /* pass to transport create */ + err = ft->alloc ? ft->alloc(netdev) : -ENODEV; + if (err) { + fcoe_del_netdev_mapping(netdev); + rc = -ENOMEM; + goto out_putdev; + } + + err = fcoe_add_netdev_mapping(netdev, ft); + if (err) { + LIBFCOE_TRANSPORT_DBG("failed to add new netdev mapping " + "for FCoE transport %s for %s.\n", + ft->name, netdev->name); + rc = -ENODEV; + goto out_putdev; + } + + LIBFCOE_TRANSPORT_DBG("transport %s %s to create fcoe on %s.\n", + ft->name, (ctlr_dev) ? "succeeded" : "failed", + netdev->name); + +out_putdev: + dev_put(netdev); +out_nodev: + mutex_unlock(&ft_mutex); + if (rc) + return rc; + return count; +} + +ssize_t fcoe_ctlr_destroy_store(struct bus_type *bus, + const char *buf, size_t count) +{ + int rc = -ENODEV; + struct net_device *netdev = NULL; + struct fcoe_transport *ft = NULL; + + mutex_lock(&ft_mutex); + + netdev = fcoe_if_to_netdev(buf); + if (!netdev) { + LIBFCOE_TRANSPORT_DBG("invalid device %s.\n", buf); + goto out_nodev; + } + + ft = fcoe_netdev_map_lookup(netdev); + if (!ft) { + LIBFCOE_TRANSPORT_DBG("no FCoE transport found for %s.\n", + netdev->name); + goto out_putdev; + } + + /* pass to transport destroy */ + rc = ft->destroy(netdev); + if (rc) + goto out_putdev; + + fcoe_del_netdev_mapping(netdev); + LIBFCOE_TRANSPORT_DBG("transport %s %s to destroy fcoe on %s.\n", + ft->name, (rc) ? "failed" : "succeeded", + netdev->name); + rc = count; /* required for successful return */ +out_putdev: + dev_put(netdev); +out_nodev: + mutex_unlock(&ft_mutex); + return rc; +} +EXPORT_SYMBOL(fcoe_ctlr_destroy_store); /** * fcoe_transport_create() - Create a fcoe interface @@ -769,11 +962,7 @@ out_putdev: dev_put(netdev); out_nodev: mutex_unlock(&ft_mutex); - - if (rc == -ERESTARTSYS) - return restart_syscall(); - else - return rc; + return rc; } /** |