We do have some USB net devices, which cannot do ARP.
so we can introduce a new flag FLAG_NOARP, then client drivers
can easily handle this kind of devices
Signed-off-by: Wei Shuai cpuw...@gmail.com
---
drivers/net/usb/usbnet.c |4
include/linux/usb/usbnet.h |1 +
2 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/drivers/net/usb/usbnet.c b/drivers/net/usb/usbnet.c
index 3d4bf01..f34b2eb 100644
--- a/drivers/net/usb/usbnet.c
+++ b/drivers/net/usb/usbnet.c
@@ -1448,6 +1448,10 @@ usbnet_probe (struct usb_interface *udev, const struct
usb_device_id *prod)
if ((dev-driver_info-flags FLAG_WWAN) != 0)
strcpy(net-name, wwan%d);
+ /* devices that cannot do ARP */
+ if ((dev-driver_info-flags FLAG_NOARP) != 0)
+ net-flags |= IFF_NOARP;
+
/* maybe the remote can't receive an Ethernet MTU */
if (net-mtu (dev-hard_mtu - net-hard_header_len))
net-mtu = dev-hard_mtu - net-hard_header_len;
diff --git a/include/linux/usb/usbnet.h b/include/linux/usb/usbnet.h
index bd45eb7..5de7a22 100644
--- a/include/linux/usb/usbnet.h
+++ b/include/linux/usb/usbnet.h
@@ -100,6 +100,7 @@ struct driver_info {
#define FLAG_LINK_INTR 0x0800 /* updates link (carrier) status */
#define FLAG_POINTTOPOINT 0x1000 /* possibly use usb%d names */
+#define FLAG_NOARP 0x2000 /* device can't do ARP */
/*
* Indicates to usbnet, that USB driver accumulates multiple IP packets.
--
1.7.6.5
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