[mirror_ubuntu-hirsute-kernel.git] / drivers / infiniband / ulp / ipoib / ipoib_ethtool.c

/*
 * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#include <linux/kernel.h>
#include <linux/ethtool.h>
#include <linux/netdevice.h>

#include "ipoib.h"

static void ipoib_get_drvinfo(struct net_device *netdev,
			      struct ethtool_drvinfo *drvinfo)
{
	strncpy(drvinfo->driver, "ipoib", sizeof(drvinfo->driver) - 1);
}

static int ipoib_get_coalesce(struct net_device *dev,
			      struct ethtool_coalesce *coal)
{
	struct ipoib_dev_priv *priv = netdev_priv(dev);

	coal->rx_coalesce_usecs = priv->ethtool.coalesce_usecs;
	coal->tx_coalesce_usecs = priv->ethtool.coalesce_usecs;
	coal->rx_max_coalesced_frames = priv->ethtool.max_coalesced_frames;
	coal->tx_max_coalesced_frames = priv->ethtool.max_coalesced_frames;

	return 0;
}

static int ipoib_set_coalesce(struct net_device *dev,
			      struct ethtool_coalesce *coal)
{
	struct ipoib_dev_priv *priv = netdev_priv(dev);
	int ret;

	/*
	 * Since IPoIB uses a single CQ for both rx and tx, we assume
	 * that rx params dictate the configuration.  These values are
	 * saved in the private data and returned when ipoib_get_coalesce()
	 * is called.
	 */
	if (coal->rx_coalesce_usecs       > 0xffff ||
	    coal->rx_max_coalesced_frames > 0xffff)
		return -EINVAL;

	ret = ib_modify_cq(priv->recv_cq, coal->rx_max_coalesced_frames,
			   coal->rx_coalesce_usecs);
	if (ret && ret != -ENOSYS) {
		ipoib_warn(priv, "failed modifying CQ (%d)\n", ret);
		return ret;
	}

	coal->tx_coalesce_usecs       = coal->rx_coalesce_usecs;
	coal->tx_max_coalesced_frames = coal->rx_max_coalesced_frames;
	priv->ethtool.coalesce_usecs       = coal->rx_coalesce_usecs;
	priv->ethtool.max_coalesced_frames = coal->rx_max_coalesced_frames;

	return 0;
}

static const char ipoib_stats_keys[][ETH_GSTRING_LEN] = {
	"LRO aggregated", "LRO flushed",
	"LRO avg aggr", "LRO no desc"
};

static void ipoib_get_strings(struct net_device *netdev, u32 stringset, u8 *data)
{
	switch (stringset) {
	case ETH_SS_STATS:
		memcpy(data, *ipoib_stats_keys,	sizeof(ipoib_stats_keys));
		break;
	}
}

static int ipoib_get_sset_count(struct net_device *dev, int sset)
{
	switch (sset) {
	case ETH_SS_STATS:
		return ARRAY_SIZE(ipoib_stats_keys);
	default:
		return -EOPNOTSUPP;
	}
}

static void ipoib_get_ethtool_stats(struct net_device *dev,
				struct ethtool_stats *stats, uint64_t *data)
{
	struct ipoib_dev_priv *priv = netdev_priv(dev);
	int index = 0;

	/* Get LRO statistics */
	data[index++] = priv->lro.lro_mgr.stats.aggregated;
	data[index++] = priv->lro.lro_mgr.stats.flushed;
	if (priv->lro.lro_mgr.stats.flushed)
		data[index++] = priv->lro.lro_mgr.stats.aggregated /
				priv->lro.lro_mgr.stats.flushed;
	else
		data[index++] = 0;
	data[index++] = priv->lro.lro_mgr.stats.no_desc;
}

static const struct ethtool_ops ipoib_ethtool_ops = {
	.get_drvinfo		= ipoib_get_drvinfo,
	.get_tso		= ethtool_op_get_tso,
	.get_coalesce		= ipoib_get_coalesce,
	.set_coalesce		= ipoib_set_coalesce,
	.get_flags		= ethtool_op_get_flags,
	.set_flags		= ethtool_op_set_flags,
	.get_strings		= ipoib_get_strings,
	.get_sset_count		= ipoib_get_sset_count,
	.get_ethtool_stats	= ipoib_get_ethtool_stats,
};

void ipoib_set_ethtool_ops(struct net_device *dev)
{
	SET_ETHTOOL_OPS(dev, &ipoib_ethtool_ops);
}
Commit	Line	Data
82c24c18 EC	1	/*
	2	* Copyright (c) 2007 Mellanox Technologies. All rights reserved.
	3	*
	4	* This software is available to you under a choice of one of two
	5	* licenses. You may choose to be licensed under the terms of the GNU
	6	* General Public License (GPL) Version 2, available from the file
	7	* COPYING in the main directory of this source tree, or the
	8	* OpenIB.org BSD license below:
	9	*
	10	* Redistribution and use in source and binary forms, with or
	11	* without modification, are permitted provided that the following
	12	* conditions are met:
	13	*
	14	* - Redistributions of source code must retain the above
	15	* copyright notice, this list of conditions and the following
	16	* disclaimer.
	17	*
	18	* - Redistributions in binary form must reproduce the above
	19	* copyright notice, this list of conditions and the following
	20	* disclaimer in the documentation and/or other materials
	21	* provided with the distribution.
	22	*
	23	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	24	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	25	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	26	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	27	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	28	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	29	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	30	* SOFTWARE.
	31	*/
	32
	33	#include <linux/kernel.h>
	34	#include <linux/ethtool.h>
	35	#include <linux/netdevice.h>
	36
	37	#include "ipoib.h"
	38
	39	static void ipoib_get_drvinfo(struct net_device *netdev,
	40	struct ethtool_drvinfo *drvinfo)
	41	{
	42	strncpy(drvinfo->driver, "ipoib", sizeof(drvinfo->driver) - 1);
	43	}
	44
28d52b3c EC	45	static int ipoib_get_coalesce(struct net_device *dev,
	46	struct ethtool_coalesce *coal)
	47	{
	48	struct ipoib_dev_priv *priv = netdev_priv(dev);
	49
	50	coal->rx_coalesce_usecs = priv->ethtool.coalesce_usecs;
	51	coal->tx_coalesce_usecs = priv->ethtool.coalesce_usecs;
	52	coal->rx_max_coalesced_frames = priv->ethtool.max_coalesced_frames;
	53	coal->tx_max_coalesced_frames = priv->ethtool.max_coalesced_frames;
	54
	55	return 0;
	56	}
	57
	58	static int ipoib_set_coalesce(struct net_device *dev,
	59	struct ethtool_coalesce *coal)
	60	{
	61	struct ipoib_dev_priv *priv = netdev_priv(dev);
	62	int ret;
	63
	64	/*
	65	* Since IPoIB uses a single CQ for both rx and tx, we assume
	66	* that rx params dictate the configuration. These values are
	67	* saved in the private data and returned when ipoib_get_coalesce()
	68	* is called.
	69	*/
	70	if (coal->rx_coalesce_usecs > 0xffff \|\|
	71	coal->rx_max_coalesced_frames > 0xffff)
	72	return -EINVAL;
	73
f56bcd80	74	ret = ib_modify_cq(priv->recv_cq, coal->rx_max_coalesced_frames,
28d52b3c EC	75	coal->rx_coalesce_usecs);
	76	if (ret && ret != -ENOSYS) {
	77	ipoib_warn(priv, "failed modifying CQ (%d)\n", ret);
	78	return ret;
	79	}
	80
	81	coal->tx_coalesce_usecs = coal->rx_coalesce_usecs;
	82	coal->tx_max_coalesced_frames = coal->rx_max_coalesced_frames;
	83	priv->ethtool.coalesce_usecs = coal->rx_coalesce_usecs;
	84	priv->ethtool.max_coalesced_frames = coal->rx_max_coalesced_frames;
	85
	86	return 0;
	87	}
	88
af40da89 VS	89	static const char ipoib_stats_keys[][ETH_GSTRING_LEN] = {
	90	"LRO aggregated", "LRO flushed",
	91	"LRO avg aggr", "LRO no desc"
	92	};
	93
	94	static void ipoib_get_strings(struct net_device netdev, u32 stringset, u8 data)
	95	{
	96	switch (stringset) {
	97	case ETH_SS_STATS:
	98	memcpy(data, *ipoib_stats_keys, sizeof(ipoib_stats_keys));
	99	break;
	100	}
	101	}
	102
	103	static int ipoib_get_sset_count(struct net_device *dev, int sset)
	104	{
	105	switch (sset) {
	106	case ETH_SS_STATS:
	107	return ARRAY_SIZE(ipoib_stats_keys);
	108	default:
	109	return -EOPNOTSUPP;
	110	}
	111	}
	112
	113	static void ipoib_get_ethtool_stats(struct net_device *dev,
	114	struct ethtool_stats stats, uint64_t data)
	115	{
	116	struct ipoib_dev_priv *priv = netdev_priv(dev);
	117	int index = 0;
	118
	119	/* Get LRO statistics */
	120	data[index++] = priv->lro.lro_mgr.stats.aggregated;
	121	data[index++] = priv->lro.lro_mgr.stats.flushed;
	122	if (priv->lro.lro_mgr.stats.flushed)
	123	data[index++] = priv->lro.lro_mgr.stats.aggregated /
	124	priv->lro.lro_mgr.stats.flushed;
	125	else
	126	data[index++] = 0;
	127	data[index++] = priv->lro.lro_mgr.stats.no_desc;
	128	}
	129
82c24c18 EC	130	static const struct ethtool_ops ipoib_ethtool_ops = {
	131	.get_drvinfo = ipoib_get_drvinfo,
	132	.get_tso = ethtool_op_get_tso,
28d52b3c EC	133	.get_coalesce = ipoib_get_coalesce,
28d52b3c EC	134	.set_coalesce = ipoib_set_coalesce,
af40da89 VS	135	.get_flags = ethtool_op_get_flags,
	136	.set_flags = ethtool_op_set_flags,
	137	.get_strings = ipoib_get_strings,
	138	.get_sset_count = ipoib_get_sset_count,
	139	.get_ethtool_stats = ipoib_get_ethtool_stats,
82c24c18 EC	140	};
	141
	142	void ipoib_set_ethtool_ops(struct net_device *dev)
	143	{
	144	SET_ETHTOOL_OPS(dev, &ipoib_ethtool_ops);
	145	}