aquantia: Switch to use napi_gro_receive

Add support for GRO (generic receive offload) for aQuantia Atlantic driver.
This results in a perfomance improvement when GRO is enabled.

Signed-off-by: Pavel Belous <pavel.belous@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/aquantia/atlantic/aq_ring.c

@@ -134,7 +134,10 @@ static inline unsigned int aq_ring_dx_in_range(unsigned int h, unsigned int i,
 }
 
 #define AQ_SKB_ALIGN SKB_DATA_ALIGN(sizeof(struct skb_shared_info))
-int aq_ring_rx_clean(struct aq_ring_s *self, int *work_done, int budget)
+int aq_ring_rx_clean(struct aq_ring_s *self,
+		     struct napi_struct *napi,
+		     int *work_done,
+		     int budget)
 {
 	struct net_device *ndev = aq_nic_get_ndev(self->aq_nic);
 	int err = 0;
@@ -240,7 +243,7 @@ int aq_ring_rx_clean(struct aq_ring_s *self, int *work_done, int budget)
 
 		skb_record_rx_queue(skb, self->idx);
 
-		netif_receive_skb(skb);
+		napi_gro_receive(napi, skb);
 
 		++self->stats.rx.packets;
 		self->stats.rx.bytes += skb->len;

drivers/net/ethernet/aquantia/atlantic/aq_ring.h

@@ -148,7 +148,10 @@ int aq_ring_init(struct aq_ring_s *self);
 void aq_ring_rx_deinit(struct aq_ring_s *self);
 void aq_ring_free(struct aq_ring_s *self);
 void aq_ring_tx_clean(struct aq_ring_s *self);
-int aq_ring_rx_clean(struct aq_ring_s *self, int *work_done, int budget);
+int aq_ring_rx_clean(struct aq_ring_s *self,
+		     struct napi_struct *napi,
+		     int *work_done,
+		     int budget);
 int aq_ring_rx_fill(struct aq_ring_s *self);
 
 #endif /* AQ_RING_H */

drivers/net/ethernet/aquantia/atlantic/aq_vec.c

@@ -78,6 +78,7 @@ __acquires(&self->lock)
 			if (ring[AQ_VEC_RX_ID].sw_head !=
 				ring[AQ_VEC_RX_ID].hw_head) {
 				err = aq_ring_rx_clean(&ring[AQ_VEC_RX_ID],
+						       napi,
 						       &work_done,
 						       budget - work_done);
 				if (err < 0)