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Commit 7e230913 authored by Yevgeny Petrilin's avatar Yevgeny Petrilin Committed by David S. Miller
Browse files

mlx4_en: Counting all the dropped packets on the TX side 



Reporting the counter's value through 'ethtool -S'

Signed-off-by: default avatarYevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 6be83252

drivers/net/mlx4/en_tx.c

+8 −7
Original line number Diff line number Diff line
@@ -515,14 +515,12 @@ static int get_real_size(struct sk_buff *skb, struct net_device *dev, 
			else {

				if (netif_msg_tx_err(priv))

					en_warn(priv, "Non-linear headers\n");

				dev_kfree_skb_any(skb);

				return 0;

			}

		}

		if (unlikely(*lso_header_size > MAX_LSO_HDR_SIZE)) {

			if (netif_msg_tx_err(priv))

				en_warn(priv, "LSO header size too big\n");

			dev_kfree_skb_any(skb);

			return 0;

		}

	} else {
@@ -622,7 +620,7 @@ int mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev) 
	}

	real_size = get_real_size(skb, dev, &lso_header_size);

	if (unlikely(!real_size))

		return NETDEV_TX_OK;

		goto tx_drop;



	/* Allign descriptor to TXBB size */

	desc_size = ALIGN(real_size, TXBB_SIZE);
@@ -630,8 +628,7 @@ int mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev) 
	if (unlikely(nr_txbb > MAX_DESC_TXBBS)) {

		if (netif_msg_tx_err(priv))

			en_warn(priv, "Oversized header or SG list\n");

		dev_kfree_skb_any(skb);

		return NETDEV_TX_OK;

		goto tx_drop;

	}



	tx_ind = skb->queue_mapping;
@@ -657,8 +654,7 @@ int mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev) 
	if (unlikely(!priv->port_up)) {

		if (netif_msg_tx_err(priv))

			en_warn(priv, "xmit: port down!\n");

		dev_kfree_skb_any(skb);

		return NETDEV_TX_OK;

		goto tx_drop;

	}



	/* Track current inflight packets for performance analysis */
@@ -785,5 +781,10 @@ int mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev) 
	mlx4_en_xmit_poll(priv, tx_ind);



	return 0;



tx_drop:

	dev_kfree_skb_any(skb);

	priv->stats.tx_dropped++;

	return NETDEV_TX_OK;

}