1/*
2 * Copyright(c) 2017 Intel Corporation.
3 *
4 * This file is provided under a dual BSD/GPLv2 license. When using or
5 * redistributing this file, you may do so under either license.
6 *
7 * GPL LICENSE SUMMARY
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of version 2 of the GNU General Public License as
11 * published by the Free Software Foundation.
12 *
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 *
18 * BSD LICENSE
19 *
20 * Redistribution and use in source and binary forms, with or without
21 * modification, are permitted provided that the following conditions
22 * are met:
23 *
24 * - Redistributions of source code must retain the above copyright
25 * notice, this list of conditions and the following disclaimer.
26 * - Redistributions in binary form must reproduce the above copyright
27 * notice, this list of conditions and the following disclaimer in
28 * the documentation and/or other materials provided with the
29 * distribution.
30 * - Neither the name of Intel Corporation nor the names of its
31 * contributors may be used to endorse or promote products derived
32 * from this software without specific prior written permission.
33 *
34 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
35 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
36 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
37 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
38 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
39 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
40 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
41 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
42 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
43 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
44 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
45 *
46 */
47
48/*
49 * This file contains OPA VNIC ethtool functions
50 */
51
52#include <linux/ethtool.h>
53
54#include "opa_vnic_internal.h"
55
56enum {NETDEV_STATS, VNIC_STATS};
57
58struct vnic_stats {
59 char stat_string[ETH_GSTRING_LEN];
60 struct {
61 int sizeof_stat;
62 int stat_offset;
63 };
64};
65
66#define VNIC_STAT(m) { sizeof_field(struct opa_vnic_stats, m), \
67 offsetof(struct opa_vnic_stats, m) }
68
69static struct vnic_stats vnic_gstrings_stats[] = {
70 /* NETDEV stats */
71 {"rx_packets", VNIC_STAT(netstats.rx_packets)},
72 {"tx_packets", VNIC_STAT(netstats.tx_packets)},
73 {"rx_bytes", VNIC_STAT(netstats.rx_bytes)},
74 {"tx_bytes", VNIC_STAT(netstats.tx_bytes)},
75 {"rx_errors", VNIC_STAT(netstats.rx_errors)},
76 {"tx_errors", VNIC_STAT(netstats.tx_errors)},
77 {"rx_dropped", VNIC_STAT(netstats.rx_dropped)},
78 {"tx_dropped", VNIC_STAT(netstats.tx_dropped)},
79
80 /* SUMMARY counters */
81 {"tx_unicast", VNIC_STAT(tx_grp.unicast)},
82 {"tx_mcastbcast", VNIC_STAT(tx_grp.mcastbcast)},
83 {"tx_untagged", VNIC_STAT(tx_grp.untagged)},
84 {"tx_vlan", VNIC_STAT(tx_grp.vlan)},
85
86 {"tx_64_size", VNIC_STAT(tx_grp.s_64)},
87 {"tx_65_127", VNIC_STAT(tx_grp.s_65_127)},
88 {"tx_128_255", VNIC_STAT(tx_grp.s_128_255)},
89 {"tx_256_511", VNIC_STAT(tx_grp.s_256_511)},
90 {"tx_512_1023", VNIC_STAT(tx_grp.s_512_1023)},
91 {"tx_1024_1518", VNIC_STAT(tx_grp.s_1024_1518)},
92 {"tx_1519_max", VNIC_STAT(tx_grp.s_1519_max)},
93
94 {"rx_unicast", VNIC_STAT(rx_grp.unicast)},
95 {"rx_mcastbcast", VNIC_STAT(rx_grp.mcastbcast)},
96 {"rx_untagged", VNIC_STAT(rx_grp.untagged)},
97 {"rx_vlan", VNIC_STAT(rx_grp.vlan)},
98
99 {"rx_64_size", VNIC_STAT(rx_grp.s_64)},
100 {"rx_65_127", VNIC_STAT(rx_grp.s_65_127)},
101 {"rx_128_255", VNIC_STAT(rx_grp.s_128_255)},
102 {"rx_256_511", VNIC_STAT(rx_grp.s_256_511)},
103 {"rx_512_1023", VNIC_STAT(rx_grp.s_512_1023)},
104 {"rx_1024_1518", VNIC_STAT(rx_grp.s_1024_1518)},
105 {"rx_1519_max", VNIC_STAT(rx_grp.s_1519_max)},
106
107 /* ERROR counters */
108 {"rx_fifo_errors", VNIC_STAT(netstats.rx_fifo_errors)},
109 {"rx_length_errors", VNIC_STAT(netstats.rx_length_errors)},
110
111 {"tx_fifo_errors", VNIC_STAT(netstats.tx_fifo_errors)},
112 {"tx_carrier_errors", VNIC_STAT(netstats.tx_carrier_errors)},
113
114 {"tx_dlid_zero", VNIC_STAT(tx_dlid_zero)},
115 {"tx_drop_state", VNIC_STAT(tx_drop_state)},
116 {"rx_drop_state", VNIC_STAT(rx_drop_state)},
117 {"rx_oversize", VNIC_STAT(rx_oversize)},
118 {"rx_runt", VNIC_STAT(rx_runt)},
119};
120
121#define VNIC_STATS_LEN ARRAY_SIZE(vnic_gstrings_stats)
122
123/* vnic_get_drvinfo - get driver info */
124static void vnic_get_drvinfo(struct net_device *netdev,
125 struct ethtool_drvinfo *drvinfo)
126{
127 strscpy(drvinfo->driver, opa_vnic_driver_name, sizeof(drvinfo->driver));
128 strscpy(drvinfo->bus_info, dev_name(netdev->dev.parent),
129 sizeof(drvinfo->bus_info));
130}
131
132/* vnic_get_sset_count - get string set count */
133static int vnic_get_sset_count(struct net_device *netdev, int sset)
134{
135 return (sset == ETH_SS_STATS) ? VNIC_STATS_LEN : -EOPNOTSUPP;
136}
137
138/* vnic_get_ethtool_stats - get statistics */
139static void vnic_get_ethtool_stats(struct net_device *netdev,
140 struct ethtool_stats *stats, u64 *data)
141{
142 struct opa_vnic_adapter *adapter = opa_vnic_priv(dev: netdev);
143 struct opa_vnic_stats vstats;
144 int i;
145
146 memset(&vstats, 0, sizeof(vstats));
147 spin_lock(lock: &adapter->stats_lock);
148 adapter->rn_ops->ndo_get_stats64(netdev, &vstats.netstats);
149 spin_unlock(lock: &adapter->stats_lock);
150 for (i = 0; i < VNIC_STATS_LEN; i++) {
151 char *p = (char *)&vstats + vnic_gstrings_stats[i].stat_offset;
152
153 data[i] = (vnic_gstrings_stats[i].sizeof_stat ==
154 sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
155 }
156}
157
158/* vnic_get_strings - get strings */
159static void vnic_get_strings(struct net_device *netdev, u32 stringset, u8 *data)
160{
161 int i;
162
163 if (stringset != ETH_SS_STATS)
164 return;
165
166 for (i = 0; i < VNIC_STATS_LEN; i++)
167 ethtool_puts(data: &data, str: vnic_gstrings_stats[i].stat_string);
168}
169
170/* ethtool ops */
171static const struct ethtool_ops opa_vnic_ethtool_ops = {
172 .get_drvinfo = vnic_get_drvinfo,
173 .get_link = ethtool_op_get_link,
174 .get_strings = vnic_get_strings,
175 .get_sset_count = vnic_get_sset_count,
176 .get_ethtool_stats = vnic_get_ethtool_stats,
177};
178
179/* opa_vnic_set_ethtool_ops - set ethtool ops */
180void opa_vnic_set_ethtool_ops(struct net_device *netdev)
181{
182 netdev->ethtool_ops = &opa_vnic_ethtool_ops;
183}
184

source code of linux/drivers/infiniband/ulp/opa_vnic/opa_vnic_ethtool.c