opa_vnic_ethtool.c

  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(netdev);
143	struct opa_vnic_stats vstats;
144	int i;
145
146	memset(&vstats, 0, sizeof(vstats));
147	spin_lock(&adapter->stats_lock);
148	adapter->rn_ops->ndo_get_stats64(netdev, &vstats.netstats);
149	spin_unlock(&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, 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}