diff options
Diffstat (limited to 'drivers/net/ethernet/hisilicon/hns3/hns3_enet.c')
| -rw-r--r-- | drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c index 5679a0cef975..840a1fbc4d2e 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c @@ -1556,6 +1556,37 @@ static int hns3_nic_set_features(struct net_device *netdev, return 0; } +static netdev_features_t hns3_features_check(struct sk_buff *skb, + struct net_device *dev, + netdev_features_t features) +{ +#define HNS3_MAX_HDR_LEN 480U +#define HNS3_MAX_L4_HDR_LEN 60U + + size_t len; + + if (skb->ip_summed != CHECKSUM_PARTIAL) + return features; + + if (skb->encapsulation) + len = skb_inner_transport_header(skb) - skb->data; + else + len = skb_transport_header(skb) - skb->data; + + /* Assume L4 is 60 byte as TCP is the only protocol with a + * a flexible value, and it's max len is 60 bytes. + */ + len += HNS3_MAX_L4_HDR_LEN; + + /* Hardware only supports checksum on the skb with a max header + * len of 480 bytes. + */ + if (len > HNS3_MAX_HDR_LEN) + features &= ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK); + + return features; +} + static void hns3_nic_get_stats64(struct net_device *netdev, struct rtnl_link_stats64 *stats) { @@ -1970,6 +2001,7 @@ static const struct net_device_ops hns3_nic_netdev_ops = { .ndo_do_ioctl = hns3_nic_do_ioctl, .ndo_change_mtu = hns3_nic_change_mtu, .ndo_set_features = hns3_nic_set_features, + .ndo_features_check = hns3_features_check, .ndo_get_stats64 = hns3_nic_get_stats64, .ndo_setup_tc = hns3_nic_setup_tc, .ndo_set_rx_mode = hns3_nic_set_rx_mode, |