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 net_device *netdev,
40 struct ethtool_drvinfo *drvinfo)
42 strncpy(drvinfo->driver, "ipoib", sizeof(drvinfo->driver) - 1);
45 static u32 ipoib_get_rx_csum(struct net_device *dev)
47 struct ipoib_dev_priv *priv = netdev_priv(dev);
48 return test_bit(IPOIB_FLAG_CSUM, &priv->flags) &&
49 !test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
52 static int ipoib_set_tso(struct net_device *dev, u32 data)
54 struct ipoib_dev_priv *priv = netdev_priv(dev);
57 if (!test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags) &&
58 (dev->features & NETIF_F_SG) &&
59 (priv->hca_caps & IB_DEVICE_UD_TSO)) {
60 dev->features |= NETIF_F_TSO;
62 ipoib_warn(priv, "can't set TSO on\n");
66 dev->features &= ~NETIF_F_TSO;
71 static int ipoib_get_coalesce(struct net_device *dev,
72 struct ethtool_coalesce *coal)
74 struct ipoib_dev_priv *priv = netdev_priv(dev);
76 coal->rx_coalesce_usecs = priv->ethtool.coalesce_usecs;
77 coal->rx_max_coalesced_frames = priv->ethtool.max_coalesced_frames;
82 static int ipoib_set_coalesce(struct net_device *dev,
83 struct ethtool_coalesce *coal)
85 struct ipoib_dev_priv *priv = netdev_priv(dev);
89 * These values are saved in the private data and returned
90 * when ipoib_get_coalesce() is called
92 if (coal->rx_coalesce_usecs > 0xffff ||
93 coal->rx_max_coalesced_frames > 0xffff)
96 ret = ib_modify_cq(priv->recv_cq, coal->rx_max_coalesced_frames,
97 coal->rx_coalesce_usecs);
98 if (ret && ret != -ENOSYS) {
99 ipoib_warn(priv, "failed modifying CQ (%d)\n", ret);
103 priv->ethtool.coalesce_usecs = coal->rx_coalesce_usecs;
104 priv->ethtool.max_coalesced_frames = coal->rx_max_coalesced_frames;
109 static const char ipoib_stats_keys[][ETH_GSTRING_LEN] = {
110 "LRO aggregated", "LRO flushed",
111 "LRO avg aggr", "LRO no desc"
114 static void ipoib_get_strings(struct net_device *netdev, u32 stringset, u8 *data)
118 memcpy(data, *ipoib_stats_keys, sizeof(ipoib_stats_keys));
123 static int ipoib_get_sset_count(struct net_device *dev, int sset)
127 return ARRAY_SIZE(ipoib_stats_keys);
133 static void ipoib_get_ethtool_stats(struct net_device *dev,
134 struct ethtool_stats *stats, uint64_t *data)
136 struct ipoib_dev_priv *priv = netdev_priv(dev);
139 /* Get LRO statistics */
140 data[index++] = priv->lro.lro_mgr.stats.aggregated;
141 data[index++] = priv->lro.lro_mgr.stats.flushed;
142 if (priv->lro.lro_mgr.stats.flushed)
143 data[index++] = priv->lro.lro_mgr.stats.aggregated /
144 priv->lro.lro_mgr.stats.flushed;
147 data[index++] = priv->lro.lro_mgr.stats.no_desc;
150 static int ipoib_set_flags(struct net_device *dev, u32 flags)
152 return ethtool_op_set_flags(dev, flags, ETH_FLAG_LRO);
155 static const struct ethtool_ops ipoib_ethtool_ops = {
156 .get_drvinfo = ipoib_get_drvinfo,
157 .get_rx_csum = ipoib_get_rx_csum,
158 .set_tso = ipoib_set_tso,
159 .get_coalesce = ipoib_get_coalesce,
160 .set_coalesce = ipoib_set_coalesce,
161 .get_flags = ethtool_op_get_flags,
162 .set_flags = ipoib_set_flags,
163 .get_strings = ipoib_get_strings,
164 .get_sset_count = ipoib_get_sset_count,
165 .get_ethtool_stats = ipoib_get_ethtool_stats,
168 void ipoib_set_ethtool_ops(struct net_device *dev)
170 SET_ETHTOOL_OPS(dev, &ipoib_ethtool_ops);