2 * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
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:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
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.
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
33 #include <linux/kernel.h>
34 #include <linux/ethtool.h>
35 #include <linux/netdevice.h>
39 static void ipoib_get_drvinfo(struct ifnet *netdev,
40 struct ethtool_drvinfo *drvinfo)
42 strncpy(drvinfo->driver, "ipoib", sizeof(drvinfo->driver) - 1);
45 static u32 ipoib_get_rx_csum(struct ifnet *dev)
47 struct ipoib_dev_priv *priv = dev->if_softc;
48 return test_bit(IPOIB_FLAG_CSUM, &priv->flags) &&
49 !test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
52 static int ipoib_get_coalesce(struct ifnet *dev,
53 struct ethtool_coalesce *coal)
55 struct ipoib_dev_priv *priv = dev->if_softc;
57 coal->rx_coalesce_usecs = priv->ethtool.coalesce_usecs;
58 coal->tx_coalesce_usecs = priv->ethtool.coalesce_usecs;
59 coal->rx_max_coalesced_frames = priv->ethtool.max_coalesced_frames;
60 coal->tx_max_coalesced_frames = priv->ethtool.max_coalesced_frames;
65 static int ipoib_set_coalesce(struct ifnet *dev,
66 struct ethtool_coalesce *coal)
68 struct ipoib_dev_priv *priv = dev->if_softc;
72 * Since IPoIB uses a single CQ for both rx and tx, we assume
73 * that rx params dictate the configuration. These values are
74 * saved in the private data and returned when ipoib_get_coalesce()
77 if (coal->rx_coalesce_usecs > 0xffff ||
78 coal->rx_max_coalesced_frames > 0xffff)
81 if (coal->rx_max_coalesced_frames | coal->rx_coalesce_usecs) {
82 if (!coal->rx_max_coalesced_frames)
83 coal->rx_max_coalesced_frames = 0xffff;
84 else if (!coal->rx_coalesce_usecs)
85 coal->rx_coalesce_usecs = 0xffff;
88 ret = ib_modify_cq(priv->recv_cq, coal->rx_max_coalesced_frames,
89 coal->rx_coalesce_usecs);
90 if (ret && ret != -ENOSYS) {
91 ipoib_warn(priv, "failed modifying CQ (%d)\n", ret);
95 coal->tx_coalesce_usecs = coal->rx_coalesce_usecs;
96 coal->tx_max_coalesced_frames = coal->rx_max_coalesced_frames;
97 priv->ethtool.coalesce_usecs = coal->rx_coalesce_usecs;
98 priv->ethtool.max_coalesced_frames = coal->rx_max_coalesced_frames;
103 static const char ipoib_stats_keys[][ETH_GSTRING_LEN] = {
104 "LRO aggregated", "LRO flushed",
105 "LRO avg aggr", "LRO no desc"
108 static void ipoib_get_strings(struct ifnet *netdev, u32 stringset, u8 *data)
112 memcpy(data, *ipoib_stats_keys, sizeof(ipoib_stats_keys));
117 static int ipoib_get_sset_count(struct ifnet *dev, int sset)
121 return ARRAY_SIZE(ipoib_stats_keys);
127 static void ipoib_get_ethtool_stats(struct ifnet *dev,
128 struct ethtool_stats *stats, uint64_t *data)
130 struct ipoib_dev_priv *priv = dev->if_softc;
133 /* Get LRO statistics */
134 data[index++] = priv->lro.lro_mgr.stats.aggregated;
135 data[index++] = priv->lro.lro_mgr.stats.flushed;
136 if (priv->lro.lro_mgr.stats.flushed)
137 data[index++] = priv->lro.lro_mgr.stats.aggregated /
138 priv->lro.lro_mgr.stats.flushed;
141 data[index++] = priv->lro.lro_mgr.stats.no_desc;
144 static const struct ethtool_ops ipoib_ethtool_ops = {
145 .get_drvinfo = ipoib_get_drvinfo,
146 .get_rx_csum = ipoib_get_rx_csum,
147 .get_coalesce = ipoib_get_coalesce,
148 .set_coalesce = ipoib_set_coalesce,
149 .get_flags = ethtool_op_get_flags,
150 .set_flags = ethtool_op_set_flags,
151 .get_strings = ipoib_get_strings,
152 .get_sset_count = ipoib_get_sset_count,
153 .get_ethtool_stats = ipoib_get_ethtool_stats,
156 void ipoib_set_ethtool_ops(struct ifnet *dev)
158 SET_ETHTOOL_OPS(dev, &ipoib_ethtool_ops);