net/mlx4_en: Low Latency recv statistics
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
index c9e6b62..727874f 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
@@ -222,7 +222,12 @@
switch (sset) {
case ETH_SS_STATS:
return (priv->stats_bitmap ? bit_count : NUM_ALL_STATS) +
- (priv->tx_ring_num + priv->rx_ring_num) * 2;
+ (priv->tx_ring_num * 2) +
+#ifdef CONFIG_NET_LL_RX_POLL
+ (priv->rx_ring_num * 5);
+#else
+ (priv->rx_ring_num * 2);
+#endif
case ETH_SS_TEST:
return MLX4_EN_NUM_SELF_TEST - !(priv->mdev->dev->caps.flags
& MLX4_DEV_CAP_FLAG_UC_LOOPBACK) * 2;
@@ -271,6 +276,11 @@
for (i = 0; i < priv->rx_ring_num; i++) {
data[index++] = priv->rx_ring[i].packets;
data[index++] = priv->rx_ring[i].bytes;
+#ifdef CONFIG_NET_LL_RX_POLL
+ data[index++] = priv->rx_ring[i].yields;
+ data[index++] = priv->rx_ring[i].misses;
+ data[index++] = priv->rx_ring[i].cleaned;
+#endif
}
spin_unlock_bh(&priv->stats_lock);
@@ -334,6 +344,14 @@
"rx%d_packets", i);
sprintf(data + (index++) * ETH_GSTRING_LEN,
"rx%d_bytes", i);
+#ifdef CONFIG_NET_LL_RX_POLL
+ sprintf(data + (index++) * ETH_GSTRING_LEN,
+ "rx%d_napi_yield", i);
+ sprintf(data + (index++) * ETH_GSTRING_LEN,
+ "rx%d_misses", i);
+ sprintf(data + (index++) * ETH_GSTRING_LEN,
+ "rx%d_cleaned", i);
+#endif
}
break;
}
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
index ab9ec91..7299ada 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
@@ -85,6 +85,10 @@
return LL_FLUSH_BUSY;
done = mlx4_en_process_rx_cq(dev, cq, 4);
+ if (likely(done))
+ rx_ring->cleaned += done;
+ else
+ rx_ring->misses++;
mlx4_en_cq_unlock_poll(cq);
diff --git a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
index 11c862e..57192a8 100644
--- a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
+++ b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
@@ -290,6 +290,11 @@
void *rx_info;
unsigned long bytes;
unsigned long packets;
+#ifdef CONFIG_NET_LL_RX_POLL
+ unsigned long yields;
+ unsigned long misses;
+ unsigned long cleaned;
+#endif
unsigned long csum_ok;
unsigned long csum_none;
int hwtstamp_rx_filter;
@@ -625,6 +630,7 @@
cq->state |= MLX4_EN_CQ_STATE_POLL_YIELD;
rc = false;
+ rx_ring->yields++;
} else
/* preserve yield marks */
cq->state |= MLX4_EN_CQ_STATE_POLL;