Commit e594ad98 authored by Daniele Palmas's avatar Daniele Palmas Committed by Jakub Kicinski
Browse files

net: usb: qmi_wwan: add qmap id sysfs file for qmimux interfaces 



Add qmimux interface sysfs file qmap/mux_id to show qmap id set
during the interface creation, in order to provide a method for
userspace to associate QMI control channels to network interfaces.

Signed-off-by: default avatarDaniele Palmas <dnlplm@gmail.com>
Acked-by: default avatarBjørn Mork <bjorn@mork.no>
Acked-by: default avatarAleksander Morgado <aleksander@aleksander.es>
Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent d7a177ea

drivers/net/usb/qmi_wwan.c

+24 −0
Original line number Diff line number Diff line
@@ -218,6 +218,28 @@ static int qmimux_rx_fixup(struct usbnet *dev, struct sk_buff *skb) 
	return 1;

}



static ssize_t mux_id_show(struct device *d, struct device_attribute *attr, char *buf)

{

	struct net_device *dev = to_net_dev(d);

	struct qmimux_priv *priv;



	priv = netdev_priv(dev);



	return sysfs_emit(buf, "0x%02x\n", priv->mux_id);

}



static DEVICE_ATTR_RO(mux_id);



static struct attribute *qmi_wwan_sysfs_qmimux_attrs[] = {

	&dev_attr_mux_id.attr,

	NULL,

};



static struct attribute_group qmi_wwan_sysfs_qmimux_attr_group = {

	.name = "qmap",

	.attrs = qmi_wwan_sysfs_qmimux_attrs,

};



static int qmimux_register_device(struct net_device *real_dev, u8 mux_id)

{

	struct net_device *new_dev;
@@ -240,6 +262,8 @@ static int qmimux_register_device(struct net_device *real_dev, u8 mux_id) 
		goto out_free_newdev;

	}



	new_dev->sysfs_groups[0] = &qmi_wwan_sysfs_qmimux_attr_group;



	err = register_netdevice(new_dev);

	if (err < 0)

		goto out_free_newdev;