Convert the legacy multi gadget to the new interface of f_rndis,
so that later the compatibility layer in f_rndis can be removed.
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@xxxxxxxxxxx>
Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
---
drivers/usb/gadget/Kconfig | 3 +-
drivers/usb/gadget/multi.c | 73 ++++++++++++++++++++++++++++++--------------
2 files changed, 52 insertions(+), 24 deletions(-)
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index 98284d5..f6f896e 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -1052,7 +1052,6 @@ config USB_G_MULTI
select USB_LIBCOMPOSITE
select USB_U_SERIAL
select USB_U_ETHER
- select USB_U_RNDIS
select USB_F_ACM
select USB_U_MS
help
@@ -1073,6 +1072,8 @@ config USB_G_MULTI
config USB_G_MULTI_RNDIS
bool "RNDIS + CDC Serial + Storage configuration"
depends on USB_G_MULTI
+ select USB_U_RNDIS
+ select USB_F_RNDIS
default y
help
This option enables a configuration with RNDIS, CDC Serial and
diff --git a/drivers/usb/gadget/multi.c b/drivers/usb/gadget/multi.c
index 0d1d132..be62bea 100644
--- a/drivers/usb/gadget/multi.c
+++ b/drivers/usb/gadget/multi.c
@@ -47,8 +47,7 @@ MODULE_LICENSE("GPL");
#include "u_ecm.h"
#ifdef USB_ETH_RNDIS
-# define USB_FRNDIS_INCLUDED
-# include "f_rndis.c"
+# include "u_rndis.h"
# include "rndis.h"
#endif
#include "u_ether.h"
@@ -152,14 +151,13 @@ FSG_MODULE_PARAMETERS(/* no prefix */, fsg_mod_data);
static struct fsg_common fsg_common;
static struct usb_function_instance *fi_acm;
-static struct eth_dev *the_dev;
/********** RNDIS **********/
#ifdef USB_ETH_RNDIS
-static u8 host_mac[ETH_ALEN];
-
+static struct usb_function_instance *fi_rndis;
static struct usb_function *f_acm_rndis;
+static struct usb_function *f_rndis;
static __init int rndis_do_config(struct usb_configuration *c)
{
@@ -170,13 +168,19 @@ static __init int rndis_do_config(struct usb_configuration *c)
c->bmAttributes |= USB_CONFIG_ATT_WAKEUP;
}
- ret = rndis_bind_config(c, host_mac, the_dev);
+ f_rndis = usb_get_function(fi_rndis);
+ if (IS_ERR(f_rndis))
+ return PTR_ERR(f_rndis);
+
+ ret = usb_add_function(c, f_rndis);
if (ret < 0)
- return ret;
+ goto err_func_rndis;
f_acm_rndis = usb_get_function(fi_acm);
- if (IS_ERR(f_acm_rndis))
- return PTR_ERR(f_acm_rndis);
+ if (IS_ERR(f_acm_rndis)) {
+ ret = PTR_ERR(f_acm_rndis);
+ goto err_func_acm;
+ }
ret = usb_add_function(c, f_acm_rndis);
if (ret)
@@ -191,6 +195,10 @@ err_fsg:
usb_remove_function(c, f_acm_rndis);
err_conf:
usb_put_function(f_acm_rndis);
+err_func_acm:
+ usb_remove_function(c, f_rndis);
+err_func_rndis:
+ usb_put_function(f_rndis);
return ret;
}
@@ -300,11 +308,14 @@ static int __ref multi_bind(struct usb_composite_dev *cdev)
#ifdef CONFIG_USB_G_MULTI_CDC
struct f_ecm_opts *ecm_opts;
#endif
+#ifdef USB_ETH_RNDIS
+ struct f_rndis_opts *rndis_opts;
+#endif
int status;
if (!can_support_ecm(cdev->gadget)) {
dev_err(&gadget->dev, "controller '%s' not usable\n",
- gadget->name);
+ gadget->name);
return -EINVAL;
}
@@ -320,26 +331,38 @@ static int __ref multi_bind(struct usb_composite_dev *cdev)
pr_info("using host ethernet address: %s", host_addr);
if (!gether_set_dev_addr(ecm_opts->net, dev_addr))
pr_info("using self ethernet address: %s", dev_addr);
+#endif
- the_dev = netdev_priv(ecm_opts->net);
+#ifdef USB_ETH_RNDIS
+ fi_rndis = usb_get_function_instance("rndis");
+ if (IS_ERR(fi_rndis)) {
+ status = PTR_ERR(fi_rndis);
+ goto fail;
+ }
-#elif defined USB_ETH_RNDIS
+ rndis_opts = container_of(fi_rndis, struct f_rndis_opts, func_inst);
- /* set up network link layer */
- the_dev = gether_setup(cdev->gadget, dev_addr, host_addr, host_mac,
- qmult);
- if (IS_ERR(the_dev))
- return PTR_ERR(the_dev);
+ gether_set_qmult(rndis_opts->net, qmult);
+ if (!gether_set_host_addr(rndis_opts->net, host_addr))
+ pr_info("using host ethernet address: %s", host_addr);
+ if (!gether_set_dev_addr(rndis_opts->net, dev_addr))
+ pr_info("using self ethernet address: %s", dev_addr);
#endif
#if (defined CONFIG_USB_G_MULTI_CDC && defined USB_ETH_RNDIS)
+ /*
+ * If both ecm and rndis are selected then:
+ * 1) rndis borrows the net interface from ecm
+ * 2) since the interface is shared it must not be bound
+ * twice - in ecm's _and_ rndis' binds, so do it here.
+ */
gether_set_gadget(ecm_opts->net, cdev->gadget);
status = gether_register_netdev(ecm_opts->net);
if (status)
goto fail0;
- ecm_opts->bound = true;
- gether_get_host_addr_u8(ecm_opts->net, host_mac);
+ rndis_borrow_net(fi_rndis, ecm_opts->net);
+ ecm_opts->bound = true;
#endif
/* set up serial link layer */
@@ -388,10 +411,12 @@ fail2:
fail1:
usb_put_function_instance(fi_acm);
fail0:
+#ifdef USB_ETH_RNDIS
+ usb_put_function_instance(fi_rndis);
+fail:
+#endif
#ifdef CONFIG_USB_G_MULTI_CDC
usb_put_function_instance(fi_ecm);
-#else
- gether_cleanup(the_dev);
#endif
return status;
}
@@ -405,11 +430,13 @@ static int __exit multi_unbind(struct usb_composite_dev *cdev)
usb_put_function(f_acm_rndis);
#endif
usb_put_function_instance(fi_acm);
+#ifdef USB_ETH_RNDIS
+ usb_put_function(f_rndis);
+ usb_put_function_instance(fi_rndis);
+#endif
#ifdef CONFIG_USB_G_MULTI_CDC
usb_put_function(f_ecm);
usb_put_function_instance(fi_ecm);
-#else
- gether_cleanup(the_dev);
#endif
return 0;
}
--
1.7.0.4
--
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