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/netdevice.h>
38 static void ipoib_get_drvinfo(struct ifnet *netdev,
39 struct ethtool_drvinfo *drvinfo)
41 strncpy(drvinfo->driver, "ipoib", sizeof(drvinfo->driver) - 1);
44 static u32 ipoib_get_rx_csum(struct ifnet *dev)
46 struct ipoib_dev_priv *priv = dev->if_softc;
47 return test_bit(IPOIB_FLAG_CSUM, &priv->flags) &&
48 !test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
51 static int ipoib_get_coalesce(struct ifnet *dev,
52 struct ethtool_coalesce *coal)
54 struct ipoib_dev_priv *priv = dev->if_softc;
56 coal->rx_coalesce_usecs = priv->ethtool.coalesce_usecs;
57 coal->tx_coalesce_usecs = priv->ethtool.coalesce_usecs;
58 coal->rx_max_coalesced_frames = priv->ethtool.max_coalesced_frames;
59 coal->tx_max_coalesced_frames = priv->ethtool.max_coalesced_frames;
64 static int ipoib_set_coalesce(struct ifnet *dev,
65 struct ethtool_coalesce *coal)
67 struct ipoib_dev_priv *priv = dev->if_softc;
71 * Since IPoIB uses a single CQ for both rx and tx, we assume
72 * that rx params dictate the configuration. These values are
73 * saved in the private data and returned when ipoib_get_coalesce()
76 if (coal->rx_coalesce_usecs > 0xffff ||
77 coal->rx_max_coalesced_frames > 0xffff)
80 if (coal->rx_max_coalesced_frames | coal->rx_coalesce_usecs) {
81 if (!coal->rx_max_coalesced_frames)
82 coal->rx_max_coalesced_frames = 0xffff;
83 else if (!coal->rx_coalesce_usecs)
84 coal->rx_coalesce_usecs = 0xffff;
87 ret = ib_modify_cq(priv->recv_cq, coal->rx_max_coalesced_frames,
88 coal->rx_coalesce_usecs);
89 if (ret && ret != -ENOSYS) {
90 ipoib_warn(priv, "failed modifying CQ (%d)\n", ret);
94 coal->tx_coalesce_usecs = coal->rx_coalesce_usecs;
95 coal->tx_max_coalesced_frames = coal->rx_max_coalesced_frames;
96 priv->ethtool.coalesce_usecs = coal->rx_coalesce_usecs;
97 priv->ethtool.max_coalesced_frames = coal->rx_max_coalesced_frames;
102 static const char ipoib_stats_keys[][ETH_GSTRING_LEN] = {
103 "LRO aggregated", "LRO flushed",
104 "LRO avg aggr", "LRO no desc"
107 static void ipoib_get_strings(struct ifnet *netdev, u32 stringset, u8 *data)
111 memcpy(data, *ipoib_stats_keys, sizeof(ipoib_stats_keys));
116 static int ipoib_get_sset_count(struct ifnet *dev, int sset)
120 return ARRAY_SIZE(ipoib_stats_keys);
126 static void ipoib_get_ethtool_stats(struct ifnet *dev,
127 struct ethtool_stats *stats, uint64_t *data)
129 struct ipoib_dev_priv *priv = dev->if_softc;
132 /* Get LRO statistics */
133 data[index++] = priv->lro.lro_mgr.stats.aggregated;
134 data[index++] = priv->lro.lro_mgr.stats.flushed;
135 if (priv->lro.lro_mgr.stats.flushed)
136 data[index++] = priv->lro.lro_mgr.stats.aggregated /
137 priv->lro.lro_mgr.stats.flushed;
140 data[index++] = priv->lro.lro_mgr.stats.no_desc;
143 static const struct ethtool_ops ipoib_ethtool_ops = {
144 .get_drvinfo = ipoib_get_drvinfo,
145 .get_rx_csum = ipoib_get_rx_csum,
146 .get_coalesce = ipoib_get_coalesce,
147 .set_coalesce = ipoib_set_coalesce,
148 .get_flags = ethtool_op_get_flags,
149 .set_flags = ethtool_op_set_flags,
150 .get_strings = ipoib_get_strings,
151 .get_sset_count = ipoib_get_sset_count,
152 .get_ethtool_stats = ipoib_get_ethtool_stats,
155 void ipoib_set_ethtool_ops(struct ifnet *dev)
157 SET_ETHTOOL_OPS(dev, &ipoib_ethtool_ops);