[mirror_ubuntu-bionic-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 u32 ipoib_get_rx_csum(struct net_device *dev)
{
	struct ipoib_dev_priv *priv = netdev_priv(dev);
	return test_bit(IPOIB_FLAG_CSUM, &priv->flags) &&
		!test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
}

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->rx_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;

	/*
	 * 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;
	}

	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_rx_csum		= ipoib_get_rx_csum,
	.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
70c9c0db OG	45	static u32 ipoib_get_rx_csum(struct net_device *dev)
	46	{
	47	struct ipoib_dev_priv *priv = netdev_priv(dev);
	48	return test_bit(IPOIB_FLAG_CSUM, &priv->flags) &&
	49	!test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
	50	}
	51
28d52b3c EC	52	static int ipoib_get_coalesce(struct net_device *dev,
	53	struct ethtool_coalesce *coal)
	54	{
	55	struct ipoib_dev_priv *priv = netdev_priv(dev);
	56
	57	coal->rx_coalesce_usecs = priv->ethtool.coalesce_usecs;
28d52b3c	58	coal->rx_max_coalesced_frames = priv->ethtool.max_coalesced_frames;
28d52b3c EC	59
	60	return 0;
	61	}
	62
	63	static int ipoib_set_coalesce(struct net_device *dev,
	64	struct ethtool_coalesce *coal)
	65	{
	66	struct ipoib_dev_priv *priv = netdev_priv(dev);
	67	int ret;
	68
	69	/*
757bebb3 OG	70	* These values are saved in the private data and returned
757bebb3 OG	71	* when ipoib_get_coalesce() is called
28d52b3c EC	72	*/
	73	if (coal->rx_coalesce_usecs > 0xffff \|\|
	74	coal->rx_max_coalesced_frames > 0xffff)
	75	return -EINVAL;
	76
f56bcd80	77	ret = ib_modify_cq(priv->recv_cq, coal->rx_max_coalesced_frames,
28d52b3c EC	78	coal->rx_coalesce_usecs);
	79	if (ret && ret != -ENOSYS) {
	80	ipoib_warn(priv, "failed modifying CQ (%d)\n", ret);
	81	return ret;
	82	}
	83
28d52b3c EC	84	priv->ethtool.coalesce_usecs = coal->rx_coalesce_usecs;
	85	priv->ethtool.max_coalesced_frames = coal->rx_max_coalesced_frames;
	86
	87	return 0;
	88	}
	89
af40da89 VS	90	static const char ipoib_stats_keys[][ETH_GSTRING_LEN] = {
	91	"LRO aggregated", "LRO flushed",
	92	"LRO avg aggr", "LRO no desc"
	93	};
	94
	95	static void ipoib_get_strings(struct net_device netdev, u32 stringset, u8 data)
	96	{
	97	switch (stringset) {
	98	case ETH_SS_STATS:
	99	memcpy(data, *ipoib_stats_keys, sizeof(ipoib_stats_keys));
	100	break;
	101	}
	102	}
	103
	104	static int ipoib_get_sset_count(struct net_device *dev, int sset)
	105	{
	106	switch (sset) {
	107	case ETH_SS_STATS:
	108	return ARRAY_SIZE(ipoib_stats_keys);
	109	default:
	110	return -EOPNOTSUPP;
	111	}
	112	}
	113
	114	static void ipoib_get_ethtool_stats(struct net_device *dev,
	115	struct ethtool_stats stats, uint64_t data)
	116	{
	117	struct ipoib_dev_priv *priv = netdev_priv(dev);
	118	int index = 0;
	119
	120	/* Get LRO statistics */
	121	data[index++] = priv->lro.lro_mgr.stats.aggregated;
	122	data[index++] = priv->lro.lro_mgr.stats.flushed;
	123	if (priv->lro.lro_mgr.stats.flushed)
	124	data[index++] = priv->lro.lro_mgr.stats.aggregated /
	125	priv->lro.lro_mgr.stats.flushed;
	126	else
	127	data[index++] = 0;
	128	data[index++] = priv->lro.lro_mgr.stats.no_desc;
	129	}
	130
82c24c18 EC	131	static const struct ethtool_ops ipoib_ethtool_ops = {
82c24c18 EC	132	.get_drvinfo = ipoib_get_drvinfo,
70c9c0db	133	.get_rx_csum = ipoib_get_rx_csum,
28d52b3c EC	134	.get_coalesce = ipoib_get_coalesce,
28d52b3c EC	135	.set_coalesce = ipoib_set_coalesce,
af40da89 VS	136	.get_flags = ethtool_op_get_flags,
	137	.set_flags = ethtool_op_set_flags,
	138	.get_strings = ipoib_get_strings,
	139	.get_sset_count = ipoib_get_sset_count,
	140	.get_ethtool_stats = ipoib_get_ethtool_stats,
82c24c18 EC	141	};
	142
	143	void ipoib_set_ethtool_ops(struct net_device *dev)
	144	{
	145	SET_ETHTOOL_OPS(dev, &ipoib_ethtool_ops);
	146	}