sky2: add GRO support

Add support for generic receive offload.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index 4f2afc7..d2112e6 100644 (file)
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -2373,6 +2373,26 @@ static inline void sky2_tx_done(struct net_device *dev, u16 last)
        }
 }
 
+static inline void sky2_skb_rx(const struct sky2_port *sky2,
+                              u32 status, struct sk_buff *skb)
+{
+#ifdef SKY2_VLAN_TAG_USED
+       u16 vlan_tag = be16_to_cpu(sky2->rx_tag);
+       if (sky2->vlgrp && (status & GMR_FS_VLAN)) {
+               if (skb->ip_summed == CHECKSUM_NONE)
+                       vlan_hwaccel_receive_skb(skb, sky2->vlgrp, vlan_tag);
+               else
+                       vlan_gro_receive(&sky2->hw->napi, sky2->vlgrp,
+                                        vlan_tag, skb);
+               return;
+       }
+#endif
+       if (skb->ip_summed == CHECKSUM_NONE)
+               netif_receive_skb(skb);
+       else
+               napi_gro_receive(&sky2->hw->napi, skb);
+}
+
 static inline void sky2_rx_done(struct sky2_hw *hw, unsigned port,
                                unsigned packets, unsigned bytes)
 {
@@ -2438,14 +2458,7 @@ static int sky2_status_intr(struct sky2_hw *hw, int to_do, u16 idx)
 
                        skb->protocol = eth_type_trans(skb, dev);
 
-#ifdef SKY2_VLAN_TAG_USED
-                       if (sky2->vlgrp && (status & GMR_FS_VLAN)) {
-                               vlan_hwaccel_receive_skb(skb,
-                                                        sky2->vlgrp,
-                                                        be16_to_cpu(sky2->rx_tag));
-                       } else
-#endif
-                               netif_receive_skb(skb);
+                       sky2_skb_rx(sky2, status, skb);
 
                        /* Stop after net poll weight */
                        if (++work_done >= to_do)