usb: gadget: u_ether: convert into module
u_ether.c has been #include'd by all gadgets which implement
USB Ethernet functions. In order to add configfs support,
the f_ecm.c, f_eem.c, f_ncm.c, f_subset.c, f_rndis.c need to be
converted into modules and must not be #include'd. Consequently,
the u_ether.c needs to be a module too, in a manner similar
to u_serial.c. The resulting module should not take any parameters,
so they are pushed to the current users of it, that is ether.c,
g_ffs.c, multi.c, ncm.c, nokia.c.
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/gadget/u_ether.c b/drivers/usb/gadget/u_ether.c
index 4b76124..5f9dacf 100644
--- a/drivers/usb/gadget/u_ether.c
+++ b/drivers/usb/gadget/u_ether.c
@@ -63,6 +63,8 @@
struct sk_buff_head rx_frames;
+ unsigned qmult;
+
unsigned header_len;
struct sk_buff *(*wrap)(struct gether *, struct sk_buff *skb);
int (*unwrap)(struct gether *,
@@ -84,12 +86,8 @@
#define DEFAULT_QLEN 2 /* double buffering by default */
-static unsigned qmult = 5;
-module_param(qmult, uint, S_IRUGO|S_IWUSR);
-MODULE_PARM_DESC(qmult, "queue length multiplier at high/super speed");
-
/* for dual-speed hardware, use deeper queues at high/super speed */
-static inline int qlen(struct usb_gadget *gadget)
+static inline int qlen(struct usb_gadget *gadget, unsigned qmult)
{
if (gadget_is_dualspeed(gadget) && (gadget->speed == USB_SPEED_HIGH ||
gadget->speed == USB_SPEED_SUPER))
@@ -588,7 +586,7 @@
if (gadget_is_dualspeed(dev->gadget))
req->no_interrupt = (dev->gadget->speed == USB_SPEED_HIGH ||
dev->gadget->speed == USB_SPEED_SUPER)
- ? ((atomic_read(&dev->tx_qlen) % qmult) != 0)
+ ? ((atomic_read(&dev->tx_qlen) % dev->qmult) != 0)
: 0;
retval = usb_ep_queue(in, req, GFP_ATOMIC);
@@ -697,16 +695,6 @@
/*-------------------------------------------------------------------------*/
-/* initial value, changed by "ifconfig usb0 hw ether xx:xx:xx:xx:xx:xx" */
-static char *dev_addr;
-module_param(dev_addr, charp, S_IRUGO);
-MODULE_PARM_DESC(dev_addr, "Device Ethernet Address");
-
-/* this address is invisible to ifconfig */
-static char *host_addr;
-module_param(host_addr, charp, S_IRUGO);
-MODULE_PARM_DESC(host_addr, "Host Ethernet Address");
-
static int get_ether_addr(const char *str, u8 *dev_addr)
{
if (str) {
@@ -755,8 +743,9 @@
*
* Returns negative errno, or zero on success
*/
-struct eth_dev *gether_setup_name(struct usb_gadget *g, u8 ethaddr[ETH_ALEN],
- const char *netname)
+struct eth_dev *gether_setup_name(struct usb_gadget *g,
+ const char *dev_addr, const char *host_addr,
+ u8 ethaddr[ETH_ALEN], unsigned qmult, const char *netname)
{
struct eth_dev *dev;
struct net_device *net;
@@ -777,6 +766,7 @@
/* network device setup */
dev->net = net;
+ dev->qmult = qmult;
snprintf(net->name, sizeof(net->name), "%s%%d", netname);
if (get_ether_addr(dev_addr, net->dev_addr))
@@ -815,6 +805,7 @@
return dev;
}
+EXPORT_SYMBOL(gether_setup_name);
/**
* gether_cleanup - remove Ethernet-over-USB device
@@ -831,6 +822,7 @@
flush_work(&dev->work);
free_netdev(dev->net);
}
+EXPORT_SYMBOL(gether_cleanup);
/**
* gether_connect - notify network layer that USB link is active
@@ -873,11 +865,12 @@
}
if (result == 0)
- result = alloc_requests(dev, link, qlen(dev->gadget));
+ result = alloc_requests(dev, link, qlen(dev->gadget,
+ dev->qmult));
if (result == 0) {
dev->zlp = link->is_zlp_ok;
- DBG(dev, "qlen %d\n", qlen(dev->gadget));
+ DBG(dev, "qlen %d\n", qlen(dev->gadget, dev->qmult));
dev->header_len = link->header_len;
dev->unwrap = link->unwrap;
@@ -910,6 +903,7 @@
return ERR_PTR(result);
return dev->net;
}
+EXPORT_SYMBOL(gether_connect);
/**
* gether_disconnect - notify network layer that USB link is inactive
@@ -980,3 +974,7 @@
dev->port_usb = NULL;
spin_unlock(&dev->lock);
}
+EXPORT_SYMBOL(gether_disconnect);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("David Brownell");