[RFC] be2net: add rxhash support

[Eric Dumazet <eric.dumazet@gmail.com>]

Ajit, it seems be2net provides RSS hash value in rx compl descriptor ?

Could we feed skb->rxhash with it ?

Thanks !

diff --git a/drivers/net/benet/be_main.c b/drivers/net/benet/be_main.c
index 0bdccb1..f2db5b2 100644
--- a/drivers/net/benet/be_main.c
+++ b/drivers/net/benet/be_main.c
@@ -1038,6 +1038,9 @@ static void be_rx_compl_process(struct be_adapter *adapter,
 
 	skb->truesize = skb->len + sizeof(struct sk_buff);
 	skb->protocol = eth_type_trans(skb, adapter->netdev);
+	if (adapter->netdev->features & NETIF_F_RXHASH)
+		skb->rxhash = AMAP_GET_BITS(struct amap_eth_rx_compl, rsshash, rxcp);
+
 
 	vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
 	vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp);
@@ -1099,6 +1102,9 @@ static void be_rx_compl_process_gro(struct be_adapter *adapter,
 		return;
 	}
 
+	if (adapter->netdev->features & NETIF_F_RXHASH)
+		skb->rxhash = AMAP_GET_BITS(struct amap_eth_rx_compl, rsshash, rxcp);
+
 	remaining = pkt_size;
 	for (i = 0, j = -1; i < num_rcvd; i++) {
 		page_info = get_rx_page_info(adapter, rxo, rxq_idx);
@@ -2618,6 +2624,7 @@ static void be_netdev_init(struct net_device *netdev)
 		NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER |
 		NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
 		NETIF_F_GRO | NETIF_F_TSO6;
+	netdev->features |= NETIF_F_RXHASH;
 
 	netdev->vlan_features |= NETIF_F_SG | NETIF_F_TSO |
 		NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;