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>

1 files changed, 21 insertions, 8 deletions

diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index 4f2afc770f8f..d2112e6258e6 100644
--- 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)