diff options
| author | David S. Miller <davem@davemloft.net> | 2017-05-22 23:32:48 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-05-22 23:32:48 -0400 |
| commit | 218b6a5b23e939caf2064549b1cb61ba22b9d0a1 (patch) | |
| tree | bdabf5439fb58905268953165779614d2aadb677 /drivers/net/usb | |
| parent | 1db3a61017c627d590315347ccf302d9a6b97970 (diff) | |
| parent | fadd2ce5a3680fb265694f573cbfb8bcb7d6c9d5 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Diffstat (limited to 'drivers/net/usb')
| -rw-r--r-- | drivers/net/usb/smsc95xx.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c index 765400b62168..2dfca96a63b6 100644 --- a/drivers/net/usb/smsc95xx.c +++ b/drivers/net/usb/smsc95xx.c @@ -681,7 +681,7 @@ static int smsc95xx_set_features(struct net_device *netdev, if (ret < 0) return ret; - if (features & NETIF_F_HW_CSUM) + if (features & NETIF_F_IP_CSUM) read_buf |= Tx_COE_EN_; else read_buf &= ~Tx_COE_EN_; @@ -1279,12 +1279,19 @@ static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf) spin_lock_init(&pdata->mac_cr_lock); + /* LAN95xx devices do not alter the computed checksum of 0 to 0xffff. + * RFC 2460, ipv6 UDP calculated checksum yields a result of zero must + * be changed to 0xffff. RFC 768, ipv4 UDP computed checksum is zero, + * it is transmitted as all ones. The zero transmitted checksum means + * transmitter generated no checksum. Hence, enable csum offload only + * for ipv4 packets. + */ if (DEFAULT_TX_CSUM_ENABLE) - dev->net->features |= NETIF_F_HW_CSUM; + dev->net->features |= NETIF_F_IP_CSUM; if (DEFAULT_RX_CSUM_ENABLE) dev->net->features |= NETIF_F_RXCSUM; - dev->net->hw_features = NETIF_F_HW_CSUM | NETIF_F_RXCSUM; + dev->net->hw_features = NETIF_F_IP_CSUM | NETIF_F_RXCSUM; smsc95xx_init_mac_address(dev); |