2 * SPDX-License-Identifier: BSD-2-Clause OR GPL-2.0
4 * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
38 #include <linux/kernel.h>
39 #include <linux/netdevice.h>
43 static void ipoib_get_drvinfo(struct ifnet *netdev,
44 struct ethtool_drvinfo *drvinfo)
46 strncpy(drvinfo->driver, "ipoib", sizeof(drvinfo->driver) - 1);
49 static u32 ipoib_get_rx_csum(struct ifnet *dev)
51 struct ipoib_dev_priv *priv = dev->if_softc;
52 return test_bit(IPOIB_FLAG_CSUM, &priv->flags) &&
53 !test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
56 static int ipoib_get_coalesce(struct ifnet *dev,
57 struct ethtool_coalesce *coal)
59 struct ipoib_dev_priv *priv = dev->if_softc;
61 coal->rx_coalesce_usecs = priv->ethtool.coalesce_usecs;
62 coal->tx_coalesce_usecs = priv->ethtool.coalesce_usecs;
63 coal->rx_max_coalesced_frames = priv->ethtool.max_coalesced_frames;
64 coal->tx_max_coalesced_frames = priv->ethtool.max_coalesced_frames;
69 static int ipoib_set_coalesce(struct ifnet *dev,
70 struct ethtool_coalesce *coal)
72 struct ipoib_dev_priv *priv = dev->if_softc;
76 * Since IPoIB uses a single CQ for both rx and tx, we assume
77 * that rx params dictate the configuration. These values are
78 * saved in the private data and returned when ipoib_get_coalesce()
81 if (coal->rx_coalesce_usecs > 0xffff ||
82 coal->rx_max_coalesced_frames > 0xffff)
85 if (coal->rx_max_coalesced_frames | coal->rx_coalesce_usecs) {
86 if (!coal->rx_max_coalesced_frames)
87 coal->rx_max_coalesced_frames = 0xffff;
88 else if (!coal->rx_coalesce_usecs)
89 coal->rx_coalesce_usecs = 0xffff;
92 ret = ib_modify_cq(priv->recv_cq, coal->rx_max_coalesced_frames,
93 coal->rx_coalesce_usecs);
94 if (ret && ret != -ENOSYS) {
95 ipoib_warn(priv, "failed modifying CQ (%d)\n", ret);
99 coal->tx_coalesce_usecs = coal->rx_coalesce_usecs;
100 coal->tx_max_coalesced_frames = coal->rx_max_coalesced_frames;
101 priv->ethtool.coalesce_usecs = coal->rx_coalesce_usecs;
102 priv->ethtool.max_coalesced_frames = coal->rx_max_coalesced_frames;
107 static const char ipoib_stats_keys[][ETH_GSTRING_LEN] = {
108 "LRO aggregated", "LRO flushed",
109 "LRO avg aggr", "LRO no desc"
112 static void ipoib_get_strings(struct ifnet *netdev, u32 stringset, u8 *data)
116 memcpy(data, *ipoib_stats_keys, sizeof(ipoib_stats_keys));
121 static int ipoib_get_sset_count(struct ifnet *dev, int sset)
125 return ARRAY_SIZE(ipoib_stats_keys);
131 static void ipoib_get_ethtool_stats(struct ifnet *dev,
132 struct ethtool_stats *stats, uint64_t *data)
134 struct ipoib_dev_priv *priv = dev->if_softc;
137 /* Get LRO statistics */
138 data[index++] = priv->lro.lro_mgr.stats.aggregated;
139 data[index++] = priv->lro.lro_mgr.stats.flushed;
140 if (priv->lro.lro_mgr.stats.flushed)
141 data[index++] = priv->lro.lro_mgr.stats.aggregated /
142 priv->lro.lro_mgr.stats.flushed;
145 data[index++] = priv->lro.lro_mgr.stats.no_desc;
148 static const struct ethtool_ops ipoib_ethtool_ops = {
149 .get_drvinfo = ipoib_get_drvinfo,
150 .get_rx_csum = ipoib_get_rx_csum,
151 .get_coalesce = ipoib_get_coalesce,
152 .set_coalesce = ipoib_set_coalesce,
153 .get_flags = ethtool_op_get_flags,
154 .set_flags = ethtool_op_set_flags,
155 .get_strings = ipoib_get_strings,
156 .get_sset_count = ipoib_get_sset_count,
157 .get_ethtool_stats = ipoib_get_ethtool_stats,
160 void ipoib_set_ethtool_ops(struct ifnet *dev)
162 SET_ETHTOOL_OPS(dev, &ipoib_ethtool_ops);