netdev - [PATCH net-next 1/5] sh_eth: Implement multicast statistic based on the RFS8 status bit

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Date:	Thu, 26 Feb 2015 20:33:30 +0000
From:	Ben Hutchings <ben.hutchings@...ethink.co.uk>
To:	netdev@...r.kernel.org
Cc:	linux-kernel@...ts.codethink.co.uk,
	Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@...esas.com>,
	Mitsuhiro Kimura <mitsuhiro.kimura.kc@...esas.com>,
	Yoshihiro Kaneko <ykaneko0929@...il.com>,
	Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
Subject: [PATCH net-next 1/5] sh_eth: Implement multicast statistic based on
 the RFS8 status bit

At least on the R8A7790, RFS8 reflects the RINT8 (multicast) MAC
status flag.

Signed-off-by: Ben Hutchings <ben.hutchings@...ethink.co.uk>
---
This should probably wait for confirmation that RFS8 consistently
indicates a multicast frame.

Ben.

 drivers/net/ethernet/renesas/sh_eth.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c
index 07c537d900da..4169f93b5c3c 100644
--- a/drivers/net/ethernet/renesas/sh_eth.c
+++ b/drivers/net/ethernet/renesas/sh_eth.c
@@ -1497,6 +1497,8 @@ static int sh_eth_rx(struct net_device *ndev, u32 intr_status, int *quota)
 			netif_receive_skb(skb);
 			ndev->stats.rx_packets++;
 			ndev->stats.rx_bytes += pkt_len;
+			if (desc_status & RD_RFS8)
+				ndev->stats.multicast++;
 		}
 		entry = (++mdp->cur_rx) % mdp->num_rx_ring;
 		rxdesc = &mdp->rx_ring[entry];
-- 
1.7.10.4




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