net: bcmgenet: enable NETIF_F_HW_CSUM feature

The GENET hardware should be capable of generating IP checksums
using the NETIF_F_HW_CSUM feature, so switch to using that feature
instead of the depricated NETIF_F_IP_CSUM and NETIF_F_IPV6_CSUM.

Signed-off-by: Doug Berger <opendmb@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
index d9defb8..cd07b3a 100644 (file)
--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
@@ -549,7 +549,7 @@ static int bcmgenet_set_tx_csum(struct net_device *dev,
        tbuf_ctrl = bcmgenet_tbuf_ctrl_get(priv);
        rbuf_ctrl = bcmgenet_rbuf_readl(priv, RBUF_CTRL);
 
-       desc_64b_en = !!(wanted & (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM));
+       desc_64b_en = !!(wanted & NETIF_F_HW_CSUM);
 
        /* enable 64 bytes descriptor in both directions (RBUF and TBUF) */
        if (desc_64b_en) {
@@ -574,7 +574,7 @@ static int bcmgenet_set_features(struct net_device *dev,
        netdev_features_t wanted = dev->wanted_features;
        int ret = 0;
 
-       if (changed & (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM))
+       if (changed & NETIF_F_HW_CSUM)
                ret = bcmgenet_set_tx_csum(dev, wanted);
        if (changed & (NETIF_F_RXCSUM))
                ret = bcmgenet_set_rx_csum(dev, wanted);
@@ -1516,24 +1516,19 @@ static struct sk_buff *bcmgenet_put_tx_csum(struct net_device *dev,
                        ip_proto = ipv6_hdr(skb)->nexthdr;
                        break;
                default:
-                       return skb;
+                       /* don't use UDP flag */
+                       ip_proto = 0;
+                       break;
                }
 
                offset = skb_checksum_start_offset(skb) - sizeof(*status);
                tx_csum_info = (offset << STATUS_TX_CSUM_START_SHIFT) |
-                               (offset + skb->csum_offset);
+                               (offset + skb->csum_offset) |
+                               STATUS_TX_CSUM_LV;
 
-               /* Set the length valid bit for TCP and UDP and just set
-                * the special UDP flag for IPv4, else just set to 0.
-                */
-               if (ip_proto == IPPROTO_TCP || ip_proto == IPPROTO_UDP) {
-                       tx_csum_info |= STATUS_TX_CSUM_LV;
-                       if (ip_proto == IPPROTO_UDP &&
-                           ip_ver == htons(ETH_P_IP))
-                               tx_csum_info |= STATUS_TX_CSUM_PROTO_UDP;
-               } else {
-                       tx_csum_info = 0;
-               }
+               /* Set the special UDP flag for UDP */
+               if (ip_proto == IPPROTO_UDP)
+                       tx_csum_info |= STATUS_TX_CSUM_PROTO_UDP;
 
                status->tx_csum_info = tx_csum_info;
        }
@@ -3536,8 +3531,8 @@ static int bcmgenet_probe(struct platform_device *pdev)
        priv->msg_enable = netif_msg_init(-1, GENET_MSG_DEFAULT);
 
        /* Set hardware features */
-       dev->hw_features |= NETIF_F_SG | NETIF_F_IP_CSUM |
-               NETIF_F_IPV6_CSUM | NETIF_F_HIGHDMA | NETIF_F_RXCSUM;
+       dev->hw_features |= NETIF_F_SG | NETIF_F_HIGHDMA | NETIF_F_HW_CSUM |
+               NETIF_F_RXCSUM;
 
        /* Request the WOL interrupt and advertise suspend if available */
        priv->wol_irq_disabled = true;