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Commit 3d789994 authored by Manish Chopra's avatar Manish Chopra Committed by David S. Miller
Browse files

qede: Add get/set rx copy break tunable support 



Signed-off-by: default avatarManish <manish.chopra@qlogic.com>
Signed-off-by: default avatarYuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 312e0676

drivers/net/ethernet/qlogic/qede/qede.h

+3 −0
Original line number Diff line number Diff line
@@ -143,6 +143,8 @@ struct qede_dev { 
	struct mutex			qede_lock;

	u32				state; /* Protected by qede_lock */

	u16				rx_buf_size;

	u32				rx_copybreak;



	/* L2 header size + 2*VLANs (8 bytes) + LLC SNAP (8 bytes) */

#define ETH_OVERHEAD			(ETH_HLEN + 8 + 8)

	/* Max supported alignment is 256 (8 shift)
@@ -333,6 +335,7 @@ void qede_recycle_rx_bd_ring(struct qede_rx_queue *rxq, struct qede_dev *edev, 
#define NUM_TX_BDS_MIN		128

#define NUM_TX_BDS_DEF		NUM_TX_BDS_MAX



#define QEDE_MIN_PKT_LEN	64

#define QEDE_RX_HDR_SIZE	256

#define	for_each_rss(i) for (i = 0; i < edev->num_rss; i++)

drivers/net/ethernet/qlogic/qede/qede_ethtool.c

+46 −0
Original line number Diff line number Diff line
@@ -1185,6 +1185,48 @@ static void qede_self_test(struct net_device *dev, 
	}

}



static int qede_set_tunable(struct net_device *dev,

			    const struct ethtool_tunable *tuna,

			    const void *data)

{

	struct qede_dev *edev = netdev_priv(dev);

	u32 val;



	switch (tuna->id) {

	case ETHTOOL_RX_COPYBREAK:

		val = *(u32 *)data;

		if (val < QEDE_MIN_PKT_LEN || val > QEDE_RX_HDR_SIZE) {

			DP_VERBOSE(edev, QED_MSG_DEBUG,

				   "Invalid rx copy break value, range is [%u, %u]",

				   QEDE_MIN_PKT_LEN, QEDE_RX_HDR_SIZE);

			return -EINVAL;

		}



		edev->rx_copybreak = *(u32 *)data;

		break;

	default:

		return -EOPNOTSUPP;

	}



	return 0;

}



static int qede_get_tunable(struct net_device *dev,

			    const struct ethtool_tunable *tuna, void *data)

{

	struct qede_dev *edev = netdev_priv(dev);



	switch (tuna->id) {

	case ETHTOOL_RX_COPYBREAK:

		*(u32 *)data = edev->rx_copybreak;

		break;

	default:

		return -EOPNOTSUPP;

	}



	return 0;

}



static const struct ethtool_ops qede_ethtool_ops = {

	.get_settings = qede_get_settings,

	.set_settings = qede_set_settings,
@@ -1213,6 +1255,8 @@ static const struct ethtool_ops qede_ethtool_ops = { 
	.get_channels = qede_get_channels,

	.set_channels = qede_set_channels,

	.self_test = qede_self_test,

	.get_tunable = qede_get_tunable,

	.set_tunable = qede_set_tunable,

};



static const struct ethtool_ops qede_vf_ethtool_ops = {
@@ -1235,6 +1279,8 @@ static const struct ethtool_ops qede_vf_ethtool_ops = { 
	.set_rxfh = qede_set_rxfh,

	.get_channels = qede_get_channels,

	.set_channels = qede_set_channels,

	.get_tunable = qede_get_tunable,

	.set_tunable = qede_set_tunable,

};



void qede_set_ethtool_ops(struct net_device *dev)

drivers/net/ethernet/qlogic/qede/qede_main.c

+2 −1
Original line number Diff line number Diff line
@@ -1474,7 +1474,7 @@ static int qede_rx_int(struct qede_fastpath *fp, int budget) 
		}



		/* Copy data into SKB */

		if (len + pad <= QEDE_RX_HDR_SIZE) {

		if (len + pad <= edev->rx_copybreak) {

			memcpy(skb_put(skb, len),

			       page_address(data) + pad +

				sw_rx_data->page_offset, len);
@@ -2519,6 +2519,7 @@ static int __qede_probe(struct pci_dev *pdev, u32 dp_module, u8 dp_level, 


	INIT_DELAYED_WORK(&edev->sp_task, qede_sp_task);

	mutex_init(&edev->qede_lock);

	edev->rx_copybreak = QEDE_RX_HDR_SIZE;



	DP_INFO(edev, "Ending successfully qede probe\n");