diff options
Diffstat (limited to 'drivers/net/usb/asix.c')
| -rw-r--r-- | drivers/net/usb/asix.c | 53 |
1 files changed, 40 insertions, 13 deletions
diff --git a/drivers/net/usb/asix.c b/drivers/net/usb/asix.c index 35f56fc8280..31b73310ec7 100644 --- a/drivers/net/usb/asix.c +++ b/drivers/net/usb/asix.c @@ -224,10 +224,9 @@ static int asix_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index, cmd, value, index, size); if (data) { - buf = kmalloc(size, GFP_KERNEL); + buf = kmemdup(data, size, GFP_KERNEL); if (!buf) goto out; - memcpy(buf, data, size); } err = usb_control_msg( @@ -322,8 +321,29 @@ static int asix_rx_fixup(struct usbnet *dev, struct sk_buff *skb) /* get the packet length */ size = (u16) (header & 0x0000ffff); - if ((skb->len) - ((size + 1) & 0xfffe) == 0) + if ((skb->len) - ((size + 1) & 0xfffe) == 0) { + u8 alignment = (u32)skb->data & 0x3; + if (alignment != 0x2) { + /* + * not 16bit aligned so use the room provided by + * the 32 bit header to align the data + * + * note we want 16bit alignment as MAC header is + * 14bytes thus ip header will be aligned on + * 32bit boundary so accessing ipheader elements + * using a cast to struct ip header wont cause + * an unaligned accesses. + */ + u8 realignment = (alignment + 2) & 0x3; + memmove(skb->data - realignment, + skb->data, + size); + skb->data -= realignment; + skb_set_tail_pointer(skb, size); + } return 2; + } + if (size > ETH_FRAME_LEN) { netdev_err(dev->net, "asix_rx_fixup() Bad RX Length %d\n", size); @@ -331,7 +351,18 @@ static int asix_rx_fixup(struct usbnet *dev, struct sk_buff *skb) } ax_skb = skb_clone(skb, GFP_ATOMIC); if (ax_skb) { + u8 alignment = (u32)packet & 0x3; ax_skb->len = size; + + if (alignment != 0x2) { + /* + * not 16bit aligned use the room provided by + * the 32 bit header to align the data + */ + u8 realignment = (alignment + 2) & 0x3; + memmove(packet - realignment, packet, size); + packet -= realignment; + } ax_skb->data = packet; skb_set_tail_pointer(ax_skb, size); usbnet_skb_return(dev, ax_skb); @@ -558,16 +589,14 @@ static void asix_set_multicast(struct net_device *net) * for our 8 byte filter buffer * to avoid allocating memory that * is tricky to free later */ - struct dev_mc_list *mc_list; + struct netdev_hw_addr *ha; u32 crc_bits; memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE); /* Build the multicast hash filter. */ - netdev_for_each_mc_addr(mc_list, net) { - crc_bits = - ether_crc(ETH_ALEN, - mc_list->dmi_addr) >> 26; + netdev_for_each_mc_addr(ha, net) { + crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26; data->multi_filter[crc_bits >> 3] |= 1 << (crc_bits & 7); } @@ -794,16 +823,14 @@ static void ax88172_set_multicast(struct net_device *net) * for our 8 byte filter buffer * to avoid allocating memory that * is tricky to free later */ - struct dev_mc_list *mc_list; + struct netdev_hw_addr *ha; u32 crc_bits; memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE); /* Build the multicast hash filter. */ - netdev_for_each_mc_addr(mc_list, net) { - crc_bits = - ether_crc(ETH_ALEN, - mc_list->dmi_addr) >> 26; + netdev_for_each_mc_addr(ha, net) { + crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26; data->multi_filter[crc_bits >> 3] |= 1 << (crc_bits & 7); } |