[PATCH net-next v2 1/2] net: usb: qmi_wwan: add qmap id sysfs file for qmimux interfaces
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STALE2086d
From: Daniele Palmas <hidden>
Date: 2021-01-27 15:38:02
Also in:
linux-usb
Subsystem:
networking drivers, the rest, usb networking drivers, usb qmi wwan network driver · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds, Bjørn Mork
Revision v1 of 2 in this series.
Revisions (2)
- v1
- v1 current
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: Daniele Palmas <redacted> --- drivers/net/usb/qmi_wwan.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+)
diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c
index 7ea113f51074..bcfb1e2788fd 100644
--- a/drivers/net/usb/qmi_wwan.c
+++ b/drivers/net/usb/qmi_wwan.c@@ -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;
--
2.17.1