r8169: add gro support

- Use napi_gro_receive() and vlan_gro_receive()
- Enable GRO by default

Tested on a RTL8111/8168 adapter

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c
index 56a11e2..5490033 100644 (file)
--- a/drivers/net/r8169.c
+++ b/drivers/net/r8169.c
@@ -1076,7 +1076,12 @@ static int rtl8169_rx_vlan_skb(struct rtl8169_private *tp, struct RxDesc *desc,
        int ret;
 
        if (vlgrp && (opts2 & RxVlanTag)) {
-               __vlan_hwaccel_rx(skb, vlgrp, swab16(opts2 & 0xffff), polling);
+               u16 vtag = swab16(opts2 & 0xffff);
+
+               if (likely(polling))
+                       vlan_gro_receive(&tp->napi, vlgrp, vtag, skb);
+               else
+                       __vlan_hwaccel_rx(skb, vlgrp, vtag, polling);
                ret = 0;
        } else
                ret = -1;
@@ -3186,6 +3191,7 @@ rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 #ifdef CONFIG_R8169_VLAN
        dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
 #endif
+       dev->features |= NETIF_F_GRO;
 
        tp->intr_mask = 0xffff;
        tp->align = cfg->align;
@@ -4561,7 +4567,7 @@ static int rtl8169_rx_interrupt(struct net_device *dev,
 
                        if (rtl8169_rx_vlan_skb(tp, desc, skb, polling) < 0) {
                                if (likely(polling))
-                                       netif_receive_skb(skb);
+                                       napi_gro_receive(&tp->napi, skb);
                                else
                                        netif_rx(skb);
                        }