diff options
Diffstat (limited to 'drivers/net/usb/lg-vl600.c')
| -rw-r--r-- | drivers/net/usb/lg-vl600.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/net/usb/lg-vl600.c b/drivers/net/usb/lg-vl600.c index 1d83ccfd7277..d43db32f9478 100644 --- a/drivers/net/usb/lg-vl600.c +++ b/drivers/net/usb/lg-vl600.c @@ -27,6 +27,7 @@ #include <linux/if_ether.h> #include <linux/if_arp.h> #include <linux/inetdevice.h> +#include <linux/module.h> /* * The device has a CDC ACM port for modem control (it claims to be @@ -89,6 +90,8 @@ 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 +203,14 @@ 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 +308,15 @@ 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; } |