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path: root/drivers/net/usb/lg-vl600.c
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Diffstat (limited to 'drivers/net/usb/lg-vl600.c')
-rw-r--r--drivers/net/usb/lg-vl600.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/net/usb/lg-vl600.c b/drivers/net/usb/lg-vl600.c
index 1d83ccfd727..1e722195105 100644
--- a/drivers/net/usb/lg-vl600.c
+++ b/drivers/net/usb/lg-vl600.c
@@ -89,6 +89,8 @@ static int vl600_bind(struct usbnet *dev, struct usb_interface *intf)
* addresses have no meaning, the destination and the source of every
* packet depend only on whether it is on the IN or OUT endpoint. */
dev->net->flags |= IFF_NOARP;
+ /* IPv6 NDP relies on multicast. Enable it by default. */
+ dev->net->flags |= IFF_MULTICAST;
return ret;
}
@@ -200,6 +202,14 @@ static int vl600_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
} else {
memset(ethhdr->h_source, 0, ETH_ALEN);
memcpy(ethhdr->h_dest, dev->net->dev_addr, ETH_ALEN);
+
+ /* Inbound IPv6 packets have an IPv4 ethertype (0x800)
+ * for some reason. Peek at the L3 header to check
+ * for IPv6 packets, and set the ethertype to IPv6
+ * (0x86dd) so Linux can understand it.
+ */
+ if ((buf->data[sizeof(*ethhdr)] & 0xf0) == 0x60)
+ ethhdr->h_proto = __constant_htons(ETH_P_IPV6);
}
if (count) {
@@ -297,6 +307,15 @@ encapsulate:
if (skb->len < full_len) /* Pad */
skb_put(skb, full_len - skb->len);
+ /* The VL600 wants IPv6 packets to have an IPv4 ethertype
+ * Check if this is an IPv6 packet, and set the ethertype
+ * to 0x800
+ */
+ if ((skb->data[sizeof(struct vl600_pkt_hdr *) + 0x22] & 0xf0) == 0x60) {
+ skb->data[sizeof(struct vl600_pkt_hdr *) + 0x20] = 0x08;
+ skb->data[sizeof(struct vl600_pkt_hdr *) + 0x21] = 0;
+ }
+
return skb;
}