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[SCSI] Merge tag 'fcoe-02-19-13' into for-linus

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FCoE Updates for 3.9

Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
James Bottomley
2013-03-01 09:09:51 +00:00
parent c157750a90 1f953b0dbc
commit 3e34c1fc2b
19 changed files with 821 additions and 297 deletions
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264
drivers/scsi/fcoe/fcoe.c
View File

@@ -82,11 +82,11 @@ static int fcoe_rcv(struct sk_buff *, struct net_device *,
struct packet_type *, struct net_device *);
static int fcoe_percpu_receive_thread(void *);
static void fcoe_percpu_clean(struct fc_lport *);
static int fcoe_link_speed_update(struct fc_lport *);
static int fcoe_link_ok(struct fc_lport *);
static struct fc_lport *fcoe_hostlist_lookup(const struct net_device *);
static int fcoe_hostlist_add(const struct fc_lport *);
static void fcoe_hostlist_del(const struct fc_lport *);
static int fcoe_device_notification(struct notifier_block *, ulong, void *);
static void fcoe_dev_setup(void);
@@ -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,
@@ -126,8 +131,6 @@ static struct fc_seq *fcoe_elsct_send(struct fc_lport *,
void *, u32 timeout);
static void fcoe_recv_frame(struct sk_buff *skb);
static void fcoe_get_lesb(struct fc_lport *, struct fc_els_lesb *);
/* notification function for packets from net device */
static struct notifier_block fcoe_notifier = {
.notifier_call = fcoe_device_notification,
@@ -151,11 +154,11 @@ static int fcoe_vport_create(struct fc_vport *, bool disabled);
static int fcoe_vport_disable(struct fc_vport *, bool disable);
static void fcoe_set_vport_symbolic_name(struct fc_vport *);
static void fcoe_set_port_id(struct fc_lport *, u32, struct fc_frame *);
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 = {
.get_fcoe_ctlr_mode = fcoe_ctlr_get_fip_mode,
.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,
@@ -1112,10 +1115,17 @@ static struct fc_lport *fcoe_if_create(struct fcoe_interface *fcoe,
port = lport_priv(lport);
port->lport = lport;
port->priv = fcoe;
port->get_netdev = fcoe_netdev;
port->max_queue_depth = FCOE_MAX_QUEUE_DEPTH;
port->min_queue_depth = FCOE_MIN_QUEUE_DEPTH;
INIT_WORK(&port->destroy_work, fcoe_destroy_work);
/*
* Need to add the lport to the hostlist
* so we catch NETDEV_CHANGE events.
*/
fcoe_hostlist_add(lport);
/* configure a fc_lport including the exchange manager */
rc = fcoe_lport_config(lport);
if (rc) {
@@ -1187,6 +1197,7 @@ static struct fc_lport *fcoe_if_create(struct fcoe_interface *fcoe,
out_lp_destroy:
fc_exch_mgr_free(lport);
out_host_put:
fcoe_hostlist_del(lport);
scsi_host_put(lport->host);
out:
return ERR_PTR(rc);
@@ -1964,6 +1975,7 @@ 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;
@@ -2020,13 +2032,29 @@ 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;
@@ -2039,6 +2067,8 @@ out:
* Called from fcoe transport.
*
* Returns: 0 for success
*
* Deprecated: use fcoe_ctlr_enabled()
*/
static int fcoe_disable(struct net_device *netdev)
{
@@ -2097,6 +2127,33 @@ out:
return rc;
}
/**
* 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
@@ -2139,8 +2196,31 @@ static void fcoe_destroy_work(struct work_struct *work)
{
struct fcoe_port *port;
struct fcoe_interface *fcoe;
struct Scsi_Host *shost;
struct fc_host_attrs *fc_host;
unsigned long flags;
struct fc_vport *vport;
struct fc_vport *next_vport;
port = container_of(work, struct fcoe_port, destroy_work);
shost = port->lport->host;
fc_host = shost_to_fc_host(shost);
/* Loop through all the vports and mark them for deletion */
spin_lock_irqsave(shost->host_lock, flags);
list_for_each_entry_safe(vport, next_vport, &fc_host->vports, peers) {
if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) {
continue;
} else {
vport->flags |= FC_VPORT_DELETING;
queue_work(fc_host_work_q(shost),
&vport->vport_delete_work);
}
}
spin_unlock_irqrestore(shost->host_lock, flags);
flush_workqueue(fc_host_work_q(shost));
mutex_lock(&fcoe_config_mutex);
fcoe = port->priv;
@@ -2204,16 +2284,26 @@ 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;
@@ -2254,13 +2344,29 @@ static int fcoe_create(struct net_device *netdev, enum fip_state fip_mode)
/* setup DCB priority attributes. */
fcoe_dcb_create(fcoe);
/* add to lports list */
fcoe_hostlist_add(lport);
/* 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);
@@ -2275,37 +2381,34 @@ out_nortnl:
}
/**
* fcoe_link_speed_update() - Update the supported and actual link speeds
* @lport: The local port to update speeds for
* 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
*
* Returns: 0 if the ethtool query was successful
* -1 if the ethtool query failed
* Called from fcoe transport
*
* Returns: 0 for success
*/
static int fcoe_link_speed_update(struct fc_lport *lport)
static int fcoe_create(struct net_device *netdev, enum fip_state fip_mode)
{
struct net_device *netdev = fcoe_netdev(lport);
struct ethtool_cmd ecmd;
return _fcoe_create(netdev, fip_mode, FCOE_CREATE_LINK_UP);
}
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;
/**
* 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);
}
/**
@@ -2375,10 +2478,13 @@ 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;
}
@@ -2445,12 +2551,31 @@ static int fcoe_hostlist_add(const struct fc_lport *lport)
return 0;
}
/**
* fcoe_hostlist_del() - Remove the FCoE interface identified by a local
* port to the hostlist
* @lport: The local port that identifies the FCoE interface to be added
*
* Locking: must be called with the RTNL mutex held
*
*/
static void fcoe_hostlist_del(const struct fc_lport *lport)
{
struct fcoe_interface *fcoe;
struct fcoe_port *port;
port = lport_priv(lport);
fcoe = port->priv;
list_del(&fcoe->list);
return;
}
static struct fcoe_transport fcoe_sw_transport = {
.name = {FCOE_TRANSPORT_DEFAULT},
.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,
@@ -2534,9 +2659,9 @@ static void __exit fcoe_exit(void)
/* releases the associated fcoe hosts */
rtnl_lock();
list_for_each_entry_safe(fcoe, tmp, &fcoe_hostlist, list) {
list_del(&fcoe->list);
ctlr = fcoe_to_ctlr(fcoe);
port = lport_priv(ctlr->lp);
fcoe_hostlist_del(port->lport);
queue_work(fcoe_wq, &port->destroy_work);
}
rtnl_unlock();
@@ -2776,43 +2901,6 @@ static void fcoe_set_vport_symbolic_name(struct fc_vport *vport)
NULL, NULL, 3 * lport->r_a_tov);
}
/**
* fcoe_get_lesb() - Fill the FCoE Link Error Status Block
* @lport: the local port
* @fc_lesb: the link error status block
*/
static void fcoe_get_lesb(struct fc_lport *lport,
struct fc_els_lesb *fc_lesb)
{
struct net_device *netdev = fcoe_netdev(lport);
__fcoe_get_lesb(lport, fc_lesb, netdev);
}
static 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_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);
}
static void fcoe_fcf_get_vlan_id(struct fcoe_fcf_device *fcf_dev)
{
struct fcoe_ctlr_device *ctlr_dev =

6
drivers/scsi/fcoe/fcoe.h
View File

@@ -55,12 +55,12 @@ do { \
#define FCOE_DBG(fmt, args...) \
FCOE_CHECK_LOGGING(FCOE_LOGGING, \
printk(KERN_INFO "fcoe: " fmt, ##args);)
pr_info("fcoe: " fmt, ##args);)
#define FCOE_NETDEV_DBG(netdev, fmt, args...) \
FCOE_CHECK_LOGGING(FCOE_NETDEV_LOGGING, \
printk(KERN_INFO "fcoe: %s: " fmt, \
netdev->name, ##args);)
pr_info("fcoe: %s: " fmt, \
netdev->name, ##args);)
/**
* struct fcoe_interface - A FCoE interface

45
drivers/scsi/fcoe/fcoe_ctlr.c
View File

@@ -1291,8 +1291,16 @@ static void fcoe_ctlr_recv_clr_vlink(struct fcoe_ctlr *fip,
LIBFCOE_FIP_DBG(fip, "Clear Virtual Link received\n");
if (!fcf || !lport->port_id)
if (!fcf || !lport->port_id) {
/*
* We are yet to select best FCF, but we got CVL in the
* meantime. reset the ctlr and let it rediscover the FCF
*/
mutex_lock(&fip->ctlr_mutex);
fcoe_ctlr_reset(fip);
mutex_unlock(&fip->ctlr_mutex);
return;
}
/*
* mask of required descriptors. Validating each one clears its bit.
@@ -1551,15 +1559,6 @@ static struct fcoe_fcf *fcoe_ctlr_select(struct fcoe_ctlr *fip)
fcf->fabric_name, fcf->vfid, fcf->fcf_mac,
fcf->fc_map, fcoe_ctlr_mtu_valid(fcf),
fcf->flogi_sent, fcf->pri);
if (fcf->fabric_name != first->fabric_name ||
fcf->vfid != first->vfid ||
fcf->fc_map != first->fc_map) {
LIBFCOE_FIP_DBG(fip, "Conflicting fabric, VFID, "
"or FC-MAP\n");
return NULL;
}
if (fcf->flogi_sent)
continue;
if (!fcoe_ctlr_fcf_usable(fcf)) {
LIBFCOE_FIP_DBG(fip, "FCF for fab %16.16llx "
"map %x %svalid %savailable\n",
@@ -1569,6 +1568,15 @@ static struct fcoe_fcf *fcoe_ctlr_select(struct fcoe_ctlr *fip)
"" : "un");
continue;
}
if (fcf->fabric_name != first->fabric_name ||
fcf->vfid != first->vfid ||
fcf->fc_map != first->fc_map) {
LIBFCOE_FIP_DBG(fip, "Conflicting fabric, VFID, "
"or FC-MAP\n");
return NULL;
}
if (fcf->flogi_sent)
continue;
if (!best || fcf->pri < best->pri || best->flogi_sent)
best = fcf;
}
@@ -2864,22 +2872,21 @@ void fcoe_fcf_get_selected(struct fcoe_fcf_device *fcf_dev)
}
EXPORT_SYMBOL(fcoe_fcf_get_selected);
void fcoe_ctlr_get_fip_mode(struct fcoe_ctlr_device *ctlr_dev)
void fcoe_ctlr_set_fip_mode(struct fcoe_ctlr_device *ctlr_dev)
{
struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev);
mutex_lock(&ctlr->ctlr_mutex);
switch (ctlr->mode) {
case FIP_MODE_FABRIC:
ctlr_dev->mode = FIP_CONN_TYPE_FABRIC;
break;
case FIP_MODE_VN2VN:
ctlr_dev->mode = FIP_CONN_TYPE_VN2VN;
switch (ctlr_dev->mode) {
case FIP_CONN_TYPE_VN2VN:
ctlr->mode = FIP_MODE_VN2VN;
break;
case FIP_CONN_TYPE_FABRIC:
default:
ctlr_dev->mode = FIP_CONN_TYPE_UNKNOWN;
ctlr->mode = FIP_MODE_FABRIC;
break;
}
mutex_unlock(&ctlr->ctlr_mutex);
}
EXPORT_SYMBOL(fcoe_ctlr_get_fip_mode);
EXPORT_SYMBOL(fcoe_ctlr_set_fip_mode);

186
drivers/scsi/fcoe/fcoe_sysfs.c
View File

@@ -21,8 +21,17 @@
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/etherdevice.h>
#include <linux/ctype.h>
#include <scsi/fcoe_sysfs.h>
#include <scsi/libfcoe.h>
/*
* OK to include local libfcoe.h for debug_logging, but cannot include
* <scsi/libfcoe.h> otherwise non-netdev based fcoe solutions would have
* have to include more than fcoe_sysfs.h.
*/
#include "libfcoe.h"
static atomic_t ctlr_num;
static atomic_t fcf_num;
@@ -71,6 +80,8 @@ MODULE_PARM_DESC(fcf_dev_loss_tmo,
((x)->lesb.lesb_err_block)
#define fcoe_ctlr_fcs_error(x) \
((x)->lesb.lesb_fcs_error)
#define fcoe_ctlr_enabled(x) \
((x)->enabled)
#define fcoe_fcf_state(x) \
((x)->state)
#define fcoe_fcf_fabric_name(x) \
@@ -210,25 +221,34 @@ static ssize_t show_fcoe_fcf_device_##field(struct device *dev, \
#define fcoe_enum_name_search(title, table_type, table) \
static const char *get_fcoe_##title##_name(enum table_type table_key) \
{ \
int i; \
char *name = NULL; \
\
for (i = 0; i < ARRAY_SIZE(table); i++) { \
if (table[i].value == table_key) { \
name = table[i].name; \
break; \
} \
} \
return name; \
if (table_key < 0 || table_key >= ARRAY_SIZE(table)) \
return NULL; \
return table[table_key]; \
}
static struct {
enum fcf_state value;
char *name;
} fcf_state_names[] = {
{ FCOE_FCF_STATE_UNKNOWN, "Unknown" },
{ FCOE_FCF_STATE_DISCONNECTED, "Disconnected" },
{ FCOE_FCF_STATE_CONNECTED, "Connected" },
static char *fip_conn_type_names[] = {
[ FIP_CONN_TYPE_UNKNOWN ] = "Unknown",
[ FIP_CONN_TYPE_FABRIC ] = "Fabric",
[ FIP_CONN_TYPE_VN2VN ] = "VN2VN",
};
fcoe_enum_name_search(ctlr_mode, fip_conn_type, fip_conn_type_names)
static enum fip_conn_type fcoe_parse_mode(const char *buf)
{
int i;
for (i = 0; i < ARRAY_SIZE(fip_conn_type_names); i++) {
if (strcasecmp(buf, fip_conn_type_names[i]) == 0)
return i;
}
return FIP_CONN_TYPE_UNKNOWN;
}
static char *fcf_state_names[] = {
[ FCOE_FCF_STATE_UNKNOWN ] = "Unknown",
[ FCOE_FCF_STATE_DISCONNECTED ] = "Disconnected",
[ FCOE_FCF_STATE_CONNECTED ] = "Connected",
};
fcoe_enum_name_search(fcf_state, fcf_state, fcf_state_names)
#define FCOE_FCF_STATE_MAX_NAMELEN 50
@@ -246,17 +266,7 @@ static ssize_t show_fcf_state(struct device *dev,
}
static FCOE_DEVICE_ATTR(fcf, state, S_IRUGO, show_fcf_state, NULL);
static struct {
enum fip_conn_type value;
char *name;
} fip_conn_type_names[] = {
{ FIP_CONN_TYPE_UNKNOWN, "Unknown" },
{ FIP_CONN_TYPE_FABRIC, "Fabric" },
{ FIP_CONN_TYPE_VN2VN, "VN2VN" },
};
fcoe_enum_name_search(ctlr_mode, fip_conn_type, fip_conn_type_names)
#define FCOE_CTLR_MODE_MAX_NAMELEN 50
#define FCOE_MAX_MODENAME_LEN 20
static ssize_t show_ctlr_mode(struct device *dev,
struct device_attribute *attr,
char *buf)
@@ -264,17 +274,116 @@ static ssize_t show_ctlr_mode(struct device *dev,
struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev);
const char *name;
if (ctlr->f->get_fcoe_ctlr_mode)
ctlr->f->get_fcoe_ctlr_mode(ctlr);
name = get_fcoe_ctlr_mode_name(ctlr->mode);
if (!name)
return -EINVAL;
return snprintf(buf, FCOE_CTLR_MODE_MAX_NAMELEN,
return snprintf(buf, FCOE_MAX_MODENAME_LEN,
"%s\n", name);
}
static FCOE_DEVICE_ATTR(ctlr, mode, S_IRUGO,
show_ctlr_mode, NULL);
static ssize_t store_ctlr_mode(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev);
char mode[FCOE_MAX_MODENAME_LEN + 1];
if (count > FCOE_MAX_MODENAME_LEN)
return -EINVAL;
strncpy(mode, buf, count);
if (mode[count - 1] == '\n')
mode[count - 1] = '\0';
else
mode[count] = '\0';
switch (ctlr->enabled) {
case FCOE_CTLR_ENABLED:
LIBFCOE_SYSFS_DBG(ctlr, "Cannot change mode when enabled.");
return -EBUSY;
case FCOE_CTLR_DISABLED:
if (!ctlr->f->set_fcoe_ctlr_mode) {
LIBFCOE_SYSFS_DBG(ctlr,
"Mode change not supported by LLD.");
return -ENOTSUPP;
}
ctlr->mode = fcoe_parse_mode(mode);
if (ctlr->mode == FIP_CONN_TYPE_UNKNOWN) {
LIBFCOE_SYSFS_DBG(ctlr,
"Unknown mode %s provided.", buf);
return -EINVAL;
}
ctlr->f->set_fcoe_ctlr_mode(ctlr);
LIBFCOE_SYSFS_DBG(ctlr, "Mode changed to %s.", buf);
return count;
case FCOE_CTLR_UNUSED:
default:
LIBFCOE_SYSFS_DBG(ctlr, "Mode change not supported.");
return -ENOTSUPP;
};
}
static FCOE_DEVICE_ATTR(ctlr, mode, S_IRUGO | S_IWUSR,
show_ctlr_mode, store_ctlr_mode);
static ssize_t store_ctlr_enabled(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev);
int rc;
switch (ctlr->enabled) {
case FCOE_CTLR_ENABLED:
if (*buf == '1')
return count;
ctlr->enabled = FCOE_CTLR_DISABLED;
break;
case FCOE_CTLR_DISABLED:
if (*buf == '0')
return count;
ctlr->enabled = FCOE_CTLR_ENABLED;
break;
case FCOE_CTLR_UNUSED:
return -ENOTSUPP;
};
rc = ctlr->f->set_fcoe_ctlr_enabled(ctlr);
if (rc)
return rc;
return count;
}
static char *ctlr_enabled_state_names[] = {
[ FCOE_CTLR_ENABLED ] = "1",
[ FCOE_CTLR_DISABLED ] = "0",
};
fcoe_enum_name_search(ctlr_enabled_state, ctlr_enabled_state,
ctlr_enabled_state_names)
#define FCOE_CTLR_ENABLED_MAX_NAMELEN 50
static ssize_t show_ctlr_enabled_state(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev);
const char *name;
name = get_fcoe_ctlr_enabled_state_name(ctlr->enabled);
if (!name)
return -EINVAL;
return snprintf(buf, FCOE_CTLR_ENABLED_MAX_NAMELEN,
"%s\n", name);
}
static FCOE_DEVICE_ATTR(ctlr, enabled, S_IRUGO | S_IWUSR,
show_ctlr_enabled_state,
store_ctlr_enabled);
static ssize_t
store_private_fcoe_ctlr_fcf_dev_loss_tmo(struct device *dev,
@@ -359,6 +468,7 @@ static struct attribute_group fcoe_ctlr_lesb_attr_group = {
static struct attribute *fcoe_ctlr_attrs[] = {
&device_attr_fcoe_ctlr_fcf_dev_loss_tmo.attr,
&device_attr_fcoe_ctlr_enabled.attr,
&device_attr_fcoe_ctlr_mode.attr,
NULL,
};
@@ -443,9 +553,16 @@ struct device_type fcoe_fcf_device_type = {
.release = fcoe_fcf_device_release,
};
struct bus_attribute fcoe_bus_attr_group[] = {
__ATTR(ctlr_create, S_IWUSR, NULL, fcoe_ctlr_create_store),
__ATTR(ctlr_destroy, S_IWUSR, NULL, fcoe_ctlr_destroy_store),
__ATTR_NULL
};
struct bus_type fcoe_bus_type = {
.name = "fcoe",
.match = &fcoe_bus_match,
.bus_attrs = fcoe_bus_attr_group,
};
/**
@@ -566,6 +683,7 @@ struct fcoe_ctlr_device *fcoe_ctlr_device_add(struct device *parent,
ctlr->id = atomic_inc_return(&ctlr_num) - 1;
ctlr->f = f;
ctlr->mode = FIP_CONN_TYPE_FABRIC;
INIT_LIST_HEAD(&ctlr->fcfs);
mutex_init(&ctlr->lock);
ctlr->dev.parent = parent;

199
drivers/scsi/fcoe/fcoe_transport.c
View File

@@ -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;
}
/**

20
drivers/scsi/fcoe/libfcoe.h
View File

@@ -2,9 +2,10 @@
#define _FCOE_LIBFCOE_H_
extern unsigned int libfcoe_debug_logging;
#define LIBFCOE_LOGGING 0x01 /* General logging, not categorized */
#define LIBFCOE_FIP_LOGGING 0x02 /* FIP logging */
#define LIBFCOE_TRANSPORT_LOGGING 0x04 /* FCoE transport logging */
#define LIBFCOE_LOGGING 0x01 /* General logging, not categorized */
#define LIBFCOE_FIP_LOGGING 0x02 /* FIP logging */
#define LIBFCOE_TRANSPORT_LOGGING 0x04 /* FCoE transport logging */
#define LIBFCOE_SYSFS_LOGGING 0x08 /* fcoe_sysfs logging */
#define LIBFCOE_CHECK_LOGGING(LEVEL, CMD) \
do { \
@@ -16,16 +17,19 @@ do { \
#define LIBFCOE_DBG(fmt, args...) \
LIBFCOE_CHECK_LOGGING(LIBFCOE_LOGGING, \
printk(KERN_INFO "libfcoe: " fmt, ##args);)
pr_info("libfcoe: " fmt, ##args);)
#define LIBFCOE_FIP_DBG(fip, fmt, args...) \
LIBFCOE_CHECK_LOGGING(LIBFCOE_FIP_LOGGING, \
printk(KERN_INFO "host%d: fip: " fmt, \
(fip)->lp->host->host_no, ##args);)
pr_info("host%d: fip: " fmt, \
(fip)->lp->host->host_no, ##args);)
#define LIBFCOE_TRANSPORT_DBG(fmt, args...) \
LIBFCOE_CHECK_LOGGING(LIBFCOE_TRANSPORT_LOGGING, \
printk(KERN_INFO "%s: " fmt, \
__func__, ##args);)
pr_info("%s: " fmt, __func__, ##args);)
#define LIBFCOE_SYSFS_DBG(cdev, fmt, args...) \
LIBFCOE_CHECK_LOGGING(LIBFCOE_SYSFS_LOGGING, \
pr_info("ctlr_%d: " fmt, cdev->id, ##args);)
#endif /* _FCOE_LIBFCOE_H_ */