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path: root/drivers/scsi/fcoe
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Diffstat (limited to 'drivers/scsi/fcoe')
-rw-r--r--drivers/scsi/fcoe/fcoe.c170
1 files changed, 62 insertions, 108 deletions
diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c
index 6d6c8bf5d155..8a1005d117b7 100644
--- a/drivers/scsi/fcoe/fcoe.c
+++ b/drivers/scsi/fcoe/fcoe.c
@@ -101,10 +101,11 @@ static int fcoe_ddp_done(struct fc_lport *, u16);
static int fcoe_cpu_callback(struct notifier_block *, unsigned long, void *);
-static int fcoe_create(const char *, struct kernel_param *);
-static int fcoe_destroy(const char *, struct kernel_param *);
-static int fcoe_enable(const char *, struct kernel_param *);
-static int fcoe_disable(const char *, struct kernel_param *);
+static bool fcoe_match(struct net_device *netdev);
+static int fcoe_create(struct net_device *netdev, enum fip_state fip_mode);
+static int fcoe_destroy(struct net_device *netdev);
+static int fcoe_enable(struct net_device *netdev);
+static int fcoe_disable(struct net_device *netdev);
static struct fc_seq *fcoe_elsct_send(struct fc_lport *,
u32 did, struct fc_frame *,
@@ -117,24 +118,6 @@ static void fcoe_recv_frame(struct sk_buff *skb);
static void fcoe_get_lesb(struct fc_lport *, struct fc_els_lesb *);
-module_param_call(create, fcoe_create, NULL, (void *)FIP_MODE_FABRIC, S_IWUSR);
-__MODULE_PARM_TYPE(create, "string");
-MODULE_PARM_DESC(create, " Creates fcoe instance on a ethernet interface");
-module_param_call(create_vn2vn, fcoe_create, NULL,
- (void *)FIP_MODE_VN2VN, S_IWUSR);
-__MODULE_PARM_TYPE(create_vn2vn, "string");
-MODULE_PARM_DESC(create_vn2vn, " Creates a VN_node to VN_node FCoE instance "
- "on an Ethernet interface");
-module_param_call(destroy, fcoe_destroy, NULL, NULL, S_IWUSR);
-__MODULE_PARM_TYPE(destroy, "string");
-MODULE_PARM_DESC(destroy, " Destroys fcoe instance on a ethernet interface");
-module_param_call(enable, fcoe_enable, NULL, NULL, S_IWUSR);
-__MODULE_PARM_TYPE(enable, "string");
-MODULE_PARM_DESC(enable, " Enables fcoe on a ethernet interface.");
-module_param_call(disable, fcoe_disable, NULL, NULL, S_IWUSR);
-__MODULE_PARM_TYPE(disable, "string");
-MODULE_PARM_DESC(disable, " Disables fcoe on a ethernet interface.");
-
/* notification function for packets from net device */
static struct notifier_block fcoe_notifier = {
.notifier_call = fcoe_device_notification,
@@ -1939,39 +1922,16 @@ out:
}
/**
- * fcoe_if_to_netdev() - Parse a name buffer to get a net device
- * @buffer: The name of the net device
- *
- * Returns: NULL or a ptr to net_device
- */
-static struct net_device *fcoe_if_to_netdev(const char *buffer)
-{
- char *cp;
- char ifname[IFNAMSIZ + 2];
-
- if (buffer) {
- strlcpy(ifname, buffer, IFNAMSIZ);
- cp = ifname + strlen(ifname);
- while (--cp >= ifname && *cp == '\n')
- *cp = '\0';
- return dev_get_by_name(&init_net, ifname);
- }
- return NULL;
-}
-
-/**
* fcoe_disable() - Disables a FCoE interface
- * @buffer: The name of the Ethernet interface to be disabled
- * @kp: The associated kernel parameter
+ * @netdev : The net_device object the Ethernet interface to create on
*
- * Called from sysfs.
+ * Called from fcoe transport.
*
* Returns: 0 for success
*/
-static int fcoe_disable(const char *buffer, struct kernel_param *kp)
+static int fcoe_disable(struct net_device *netdev)
{
struct fcoe_interface *fcoe;
- struct net_device *netdev;
int rc = 0;
mutex_lock(&fcoe_config_mutex);
@@ -1987,16 +1947,9 @@ static int fcoe_disable(const char *buffer, struct kernel_param *kp)
}
#endif
- netdev = fcoe_if_to_netdev(buffer);
- if (!netdev) {
- rc = -ENODEV;
- goto out_nodev;
- }
-
if (!rtnl_trylock()) {
- dev_put(netdev);
mutex_unlock(&fcoe_config_mutex);
- return restart_syscall();
+ return -ERESTARTSYS;
}
fcoe = fcoe_hostlist_lookup_port(netdev);
@@ -2008,7 +1961,6 @@ static int fcoe_disable(const char *buffer, struct kernel_param *kp)
} else
rc = -ENODEV;
- dev_put(netdev);
out_nodev:
mutex_unlock(&fcoe_config_mutex);
return rc;
@@ -2016,17 +1968,15 @@ out_nodev:
/**
* fcoe_enable() - Enables a FCoE interface
- * @buffer: The name of the Ethernet interface to be enabled
- * @kp: The associated kernel parameter
+ * @netdev : The net_device object the Ethernet interface to create on
*
- * Called from sysfs.
+ * Called from fcoe transport.
*
* Returns: 0 for success
*/
-static int fcoe_enable(const char *buffer, struct kernel_param *kp)
+static int fcoe_enable(struct net_device *netdev)
{
struct fcoe_interface *fcoe;
- struct net_device *netdev;
int rc = 0;
mutex_lock(&fcoe_config_mutex);
@@ -2041,17 +1991,9 @@ static int fcoe_enable(const char *buffer, struct kernel_param *kp)
goto out_nodev;
}
#endif
-
- netdev = fcoe_if_to_netdev(buffer);
- if (!netdev) {
- rc = -ENODEV;
- goto out_nodev;
- }
-
if (!rtnl_trylock()) {
- dev_put(netdev);
mutex_unlock(&fcoe_config_mutex);
- return restart_syscall();
+ return -ERESTARTSYS;
}
fcoe = fcoe_hostlist_lookup_port(netdev);
@@ -2062,7 +2004,6 @@ static int fcoe_enable(const char *buffer, struct kernel_param *kp)
else if (!fcoe_link_ok(fcoe->ctlr.lp))
fcoe_ctlr_link_up(&fcoe->ctlr);
- dev_put(netdev);
out_nodev:
mutex_unlock(&fcoe_config_mutex);
return rc;
@@ -2070,17 +2011,15 @@ out_nodev:
/**
* fcoe_destroy() - Destroy a FCoE interface
- * @buffer: The name of the Ethernet interface to be destroyed
- * @kp: The associated kernel parameter
+ * @netdev : The net_device object the Ethernet interface to create on
*
- * Called from sysfs.
+ * Called from fcoe transport
*
* Returns: 0 for success
*/
-static int fcoe_destroy(const char *buffer, struct kernel_param *kp)
+static int fcoe_destroy(struct net_device *netdev)
{
struct fcoe_interface *fcoe;
- struct net_device *netdev;
int rc = 0;
mutex_lock(&fcoe_config_mutex);
@@ -2095,32 +2034,21 @@ static int fcoe_destroy(const char *buffer, struct kernel_param *kp)
goto out_nodev;
}
#endif
-
- netdev = fcoe_if_to_netdev(buffer);
- if (!netdev) {
- rc = -ENODEV;
- goto out_nodev;
- }
-
if (!rtnl_trylock()) {
- dev_put(netdev);
mutex_unlock(&fcoe_config_mutex);
- return restart_syscall();
+ return -ERESTARTSYS;
}
fcoe = fcoe_hostlist_lookup_port(netdev);
if (!fcoe) {
rtnl_unlock();
rc = -ENODEV;
- goto out_putdev;
+ goto out_nodev;
}
fcoe_interface_cleanup(fcoe);
list_del(&fcoe->list);
/* RTNL mutex is dropped by fcoe_if_destroy */
fcoe_if_destroy(fcoe->ctlr.lp);
-
-out_putdev:
- dev_put(netdev);
out_nodev:
mutex_unlock(&fcoe_config_mutex);
return rc;
@@ -2143,27 +2071,39 @@ static void fcoe_destroy_work(struct work_struct *work)
}
/**
+ * fcoe_match() - Check if the FCoE is supported on the given netdevice
+ * @netdev : The net_device object the Ethernet interface to create on
+ *
+ * Called from fcoe transport.
+ *
+ * Returns: always returns true as this is the default FCoE transport,
+ * i.e., support all netdevs.
+ */
+static bool fcoe_match(struct net_device *netdev)
+{
+ return true;
+}
+
+/**
* fcoe_create() - Create a fcoe interface
- * @buffer: The name of the Ethernet interface to create on
- * @kp: The associated kernel param
+ * @netdev : The net_device object the Ethernet interface to create on
+ * @fip_mode: The FIP mode for this creation
*
- * Called from sysfs.
+ * Called from fcoe transport
*
* Returns: 0 for success
*/
-static int fcoe_create(const char *buffer, struct kernel_param *kp)
+static int fcoe_create(struct net_device *netdev, enum fip_state fip_mode)
{
- enum fip_state fip_mode = (enum fip_state)(long)kp->arg;
int rc;
struct fcoe_interface *fcoe;
struct fc_lport *lport;
- struct net_device *netdev;
mutex_lock(&fcoe_config_mutex);
if (!rtnl_trylock()) {
mutex_unlock(&fcoe_config_mutex);
- return restart_syscall();
+ return -ERESTARTSYS;
}
#ifdef CONFIG_FCOE_MODULE
@@ -2178,22 +2118,16 @@ static int fcoe_create(const char *buffer, struct kernel_param *kp)
}
#endif
- netdev = fcoe_if_to_netdev(buffer);
- if (!netdev) {
- rc = -ENODEV;
- goto out_nodev;
- }
-
/* look for existing lport */
if (fcoe_hostlist_lookup(netdev)) {
rc = -EEXIST;
- goto out_putdev;
+ goto out_nodev;
}
fcoe = fcoe_interface_create(netdev, fip_mode);
if (IS_ERR(fcoe)) {
rc = PTR_ERR(fcoe);
- goto out_putdev;
+ goto out_nodev;
}
lport = fcoe_if_create(fcoe, &netdev->dev, 0);
@@ -2222,15 +2156,12 @@ static int fcoe_create(const char *buffer, struct kernel_param *kp)
* should be holding a reference taken in fcoe_if_create().
*/
fcoe_interface_put(fcoe);
- dev_put(netdev);
rtnl_unlock();
mutex_unlock(&fcoe_config_mutex);
return 0;
out_free:
fcoe_interface_put(fcoe);
-out_putdev:
- dev_put(netdev);
out_nodev:
rtnl_unlock();
mutex_unlock(&fcoe_config_mutex);
@@ -2433,6 +2364,18 @@ static int fcoe_hostlist_add(const struct fc_lport *lport)
return 0;
}
+
+static struct fcoe_transport fcoe_sw_transport = {
+ .name = {FCOE_TRANSPORT_DEFAULT},
+ .attached = false,
+ .list = LIST_HEAD_INIT(fcoe_sw_transport.list),
+ .match = fcoe_match,
+ .create = fcoe_create,
+ .destroy = fcoe_destroy,
+ .enable = fcoe_enable,
+ .disable = fcoe_disable,
+};
+
/**
* fcoe_init() - Initialize fcoe.ko
*
@@ -2444,6 +2387,14 @@ static int __init fcoe_init(void)
unsigned int cpu;
int rc = 0;
+ /* register as a fcoe transport */
+ rc = fcoe_transport_attach(&fcoe_sw_transport);
+ if (rc) {
+ printk(KERN_ERR "failed to register an fcoe transport, check "
+ "if libfcoe is loaded\n");
+ return rc;
+ }
+
mutex_lock(&fcoe_config_mutex);
for_each_possible_cpu(cpu) {
@@ -2520,6 +2471,9 @@ static void __exit fcoe_exit(void)
/* detach from scsi transport
* must happen after all destroys are done, therefor after the flush */
fcoe_if_exit();
+
+ /* detach from fcoe transport */
+ fcoe_transport_detach(&fcoe_sw_transport);
}
module_exit(fcoe_exit);
generated by cgit v1.2.3 (git 2.0.4) at 2024-09-11 20:22:32 +0000