aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c
blob: 7871379342f48fa77b2e6e8279ca774b4c49ad2f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
/*
 * 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"

struct ipoib_stats {
	char stat_string[ETH_GSTRING_LEN];
	int stat_offset;
};

#define IPOIB_NETDEV_STAT(m) { \
		.stat_string = #m, \
		.stat_offset = offsetof(struct rtnl_link_stats64, m) }

static const struct ipoib_stats ipoib_gstrings_stats[] = {
	IPOIB_NETDEV_STAT(rx_packets),
	IPOIB_NETDEV_STAT(tx_packets),
	IPOIB_NETDEV_STAT(rx_bytes),
	IPOIB_NETDEV_STAT(tx_bytes),
	IPOIB_NETDEV_STAT(tx_errors),
	IPOIB_NETDEV_STAT(rx_dropped),
	IPOIB_NETDEV_STAT(tx_dropped)
};

#define IPOIB_GLOBAL_STATS_LEN	ARRAY_SIZE(ipoib_gstrings_stats)

static void ipoib_get_drvinfo(struct net_device *netdev,
			      struct ethtool_drvinfo *drvinfo)
{
	struct ipoib_dev_priv *priv = ipoib_priv(netdev);

	ib_get_device_fw_str(priv->ca, drvinfo->fw_version,
			     sizeof(drvinfo->fw_version));

	strlcpy(drvinfo->bus_info, dev_name(priv->ca->dev.parent),
		sizeof(drvinfo->bus_info));

	strlcpy(drvinfo->version, ipoib_driver_version,
		sizeof(drvinfo->version));

	strlcpy(drvinfo->driver, "ib_ipoib", sizeof(drvinfo->driver));
}

static int ipoib_get_coalesce(struct net_device *dev,
			      struct ethtool_coalesce *coal)
{
	struct ipoib_dev_priv *priv = ipoib_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 = ipoib_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 void ipoib_get_ethtool_stats(struct net_device *dev,
				    struct ethtool_stats __always_unused *stats,
				    u64 *data)
{
	int i;
	struct net_device_stats *net_stats = &dev->stats;
	u8 *p = (u8 *)net_stats;

	for (i = 0; i < IPOIB_GLOBAL_STATS_LEN; i++)
		data[i] = *(u64 *)(p + ipoib_gstrings_stats[i].stat_offset);

}
static void ipoib_get_strings(struct net_device __always_unused *dev,
			      u32 stringset, u8 *data)
{
	u8 *p = data;
	int i;

	switch (stringset) {
	case ETH_SS_STATS:
		for (i = 0; i < IPOIB_GLOBAL_STATS_LEN; i++) {
			memcpy(p, ipoib_gstrings_stats[i].stat_string,
				ETH_GSTRING_LEN);
			p += ETH_GSTRING_LEN;
		}
		break;
	case ETH_SS_TEST:
	default:
		break;
	}
}
static int ipoib_get_sset_count(struct net_device __always_unused *dev,
				 int sset)
{
	switch (sset) {
	case ETH_SS_STATS:
		return IPOIB_GLOBAL_STATS_LEN;
	case ETH_SS_TEST:
	default:
		break;
	}
	return -EOPNOTSUPP;
}

/* Return lane speed in unit of 1e6 bit/sec */
static inline int ib_speed_enum_to_int(int speed)
{
	switch (speed) {
	case IB_SPEED_SDR:
		return SPEED_2500;
	case IB_SPEED_DDR:
		return SPEED_5000;
	case IB_SPEED_QDR:
	case IB_SPEED_FDR10:
		return SPEED_10000;
	case IB_SPEED_FDR:
		return SPEED_14000;
	case IB_SPEED_EDR:
		return SPEED_25000;
	}

	return SPEED_UNKNOWN;
}

static int ipoib_get_link_ksettings(struct net_device *netdev,
				    struct ethtool_link_ksettings *cmd)
{
	struct ipoib_dev_priv *priv = ipoib_priv(netdev);
	struct ib_port_attr attr;
	int ret, speed, width;

	if (!netif_carrier_ok(netdev)) {
		cmd->base.speed = SPEED_UNKNOWN;
		cmd->base.duplex = DUPLEX_UNKNOWN;
		return 0;
	}

	ret = ib_query_port(priv->ca, priv->port, &attr);
	if (ret < 0)
		return -EINVAL;

	speed = ib_speed_enum_to_int(attr.active_speed);
	width = ib_width_enum_to_int(attr.active_width);

	if (speed < 0 || width < 0)
		return -EINVAL;

	/* Except the following are set, the other members of
	 * the struct ethtool_link_settings are initialized to
	 * zero in the function __ethtool_get_link_ksettings.
	 */
	cmd->base.speed		 = speed * width;
	cmd->base.duplex	 = DUPLEX_FULL;

	cmd->base.phy_address	 = 0xFF;

	cmd->base.autoneg	 = AUTONEG_ENABLE;
	cmd->base.port		 = PORT_OTHER;

	return 0;
}

static const struct ethtool_ops ipoib_ethtool_ops = {
	.get_link_ksettings	= ipoib_get_link_ksettings,
	.get_drvinfo		= ipoib_get_drvinfo,
	.get_coalesce		= ipoib_get_coalesce,
	.set_coalesce		= ipoib_set_coalesce,
	.get_strings		= ipoib_get_strings,
	.get_ethtool_stats	= ipoib_get_ethtool_stats,
	.get_sset_count		= ipoib_get_sset_count,
};

void ipoib_set_ethtool_ops(struct net_device *dev)
{
	dev->ethtool_ops = &ipoib_ethtool_ops;
}

Privacy Policy