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usbnet: notify if config to sync with userspace

Browse source 
Notify usbnet if configure to sync with netconfig in userspace
in factory mode.

Clear the gadget in context in case it has been removed when
phone switch to host mode. In that case, there will be kernel
panic for invalid gadget device access.

Change-Id: I28fdb1455eff5fa0592f024e7f1096cbf662de23
Signed-off-by: Yonghua Yan <yanyh2@motorola.com>
Reviewed-on: https://gerrit.mot.com/2337318
SME-Granted: SME Approvals Granted
SLTApproved: Slta Waiver
Tested-by: Jira Key
Reviewed-by: Haichao Li <liuhc3@motorola.com>
Reviewed-by: Jianqi Yang <yangj@motorola.com>
Submit-Approved: Jira Key
This commit is contained in:
Yonghua Yan 2022-07-19 12:33:22 +08:00
commit 896ff3dd7b
1 changed files with 23 additions and 1 deletions
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24
drivers/moto_f_usbnet/f_usbnet.c
View file

@ -298,12 +298,32 @@ static ssize_t usbnet_iff_flag_show(struct device *dev,
};
static DEVICE_ATTR(iff_flag, S_IRUGO, usbnet_iff_flag_show, NULL);
static void usbnet_if_config_notify(struct usbnet_context *context)
{
struct kobj_uevent_env *env;
struct net_device *net_dev = context->dev;
env = kzalloc(sizeof(*env), GFP_KERNEL);
if (!env) {
USBNETDBG(context, "%s: alloc uevent error\n", __func__);
return;
}
add_uevent_var(env, "USBNET_IF_CFG_IP_ADDR=0x%08x",
context->ip_addr);
add_uevent_var(env, "USBNET_IP_CFG_ROUTER_ADDR=0x%08x",
context->router_ip);
add_uevent_var(env, "USBNET_IP_CFG_SUBNET_MASK=0x%08x",
context->subnet_mask);
kobject_uevent_env(&net_dev->dev.kobj, KOBJ_CHANGE, env->envp);
kfree(env);
}
static inline struct usbnet_device *usbnet_func_to_dev(struct usb_function *f)
{
return container_of(f, struct usbnet_device, function);
}
static int ether_queue_out(struct usb_request *req ,
struct usbnet_context *context)
{
@ -523,6 +543,7 @@ static void usbnet_if_config(struct work_struct *work)
usbnet_add_files(context);
else
usbnet_remove_files(context);
usbnet_if_config_notify(context);
}
static const struct net_device_ops usbnet_eth_netdev_ops = {
@ -589,6 +610,7 @@ static void usbnet_unbind(struct usb_configuration *c, struct usb_function *f)
}
}
context->gadget = NULL;
context->bulk_in = NULL;
context->bulk_out = NULL;
context->config = 0;