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82c24c18 EC |
1 | /* |
2 | * Copyright (c) 2007 Mellanox Technologies. All rights reserved. | |
3 | * | |
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: | |
9 | * | |
10 | * Redistribution and use in source and binary forms, with or | |
11 | * without modification, are permitted provided that the following | |
12 | * conditions are met: | |
13 | * | |
14 | * - Redistributions of source code must retain the above | |
15 | * copyright notice, this list of conditions and the following | |
16 | * disclaimer. | |
17 | * | |
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. | |
22 | * | |
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 | |
30 | * SOFTWARE. | |
31 | */ | |
32 | ||
33 | #include <linux/kernel.h> | |
34 | #include <linux/ethtool.h> | |
35 | #include <linux/netdevice.h> | |
36 | ||
37 | #include "ipoib.h" | |
38 | ||
e3614bc9 HWR |
39 | struct ipoib_stats { |
40 | char stat_string[ETH_GSTRING_LEN]; | |
41 | int stat_offset; | |
42 | }; | |
43 | ||
44 | #define IPOIB_NETDEV_STAT(m) { \ | |
45 | .stat_string = #m, \ | |
46 | .stat_offset = offsetof(struct rtnl_link_stats64, m) } | |
47 | ||
48 | static const struct ipoib_stats ipoib_gstrings_stats[] = { | |
49 | IPOIB_NETDEV_STAT(rx_packets), | |
50 | IPOIB_NETDEV_STAT(tx_packets), | |
51 | IPOIB_NETDEV_STAT(rx_bytes), | |
52 | IPOIB_NETDEV_STAT(tx_bytes), | |
53 | IPOIB_NETDEV_STAT(tx_errors), | |
54 | IPOIB_NETDEV_STAT(rx_dropped), | |
55 | IPOIB_NETDEV_STAT(tx_dropped) | |
56 | }; | |
57 | ||
58 | #define IPOIB_GLOBAL_STATS_LEN ARRAY_SIZE(ipoib_gstrings_stats) | |
59 | ||
82c24c18 EC |
60 | static void ipoib_get_drvinfo(struct net_device *netdev, |
61 | struct ethtool_drvinfo *drvinfo) | |
62 | { | |
4b48680b | 63 | struct ipoib_dev_priv *priv = netdev_priv(netdev); |
4b48680b | 64 | |
1a863212 IW |
65 | ib_get_device_fw_str(priv->ca, drvinfo->fw_version, |
66 | sizeof(drvinfo->fw_version)); | |
4b48680b YB |
67 | |
68 | strlcpy(drvinfo->bus_info, dev_name(priv->ca->dma_device), | |
69 | sizeof(drvinfo->bus_info)); | |
70 | ||
71 | strlcpy(drvinfo->version, ipoib_driver_version, | |
72 | sizeof(drvinfo->version)); | |
73 | ||
74 | strlcpy(drvinfo->driver, "ib_ipoib", sizeof(drvinfo->driver)); | |
82c24c18 EC |
75 | } |
76 | ||
28d52b3c EC |
77 | static int ipoib_get_coalesce(struct net_device *dev, |
78 | struct ethtool_coalesce *coal) | |
79 | { | |
80 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
81 | ||
82 | coal->rx_coalesce_usecs = priv->ethtool.coalesce_usecs; | |
28d52b3c | 83 | coal->rx_max_coalesced_frames = priv->ethtool.max_coalesced_frames; |
28d52b3c EC |
84 | |
85 | return 0; | |
86 | } | |
87 | ||
88 | static int ipoib_set_coalesce(struct net_device *dev, | |
89 | struct ethtool_coalesce *coal) | |
90 | { | |
91 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
92 | int ret; | |
93 | ||
94 | /* | |
757bebb3 OG |
95 | * These values are saved in the private data and returned |
96 | * when ipoib_get_coalesce() is called | |
28d52b3c EC |
97 | */ |
98 | if (coal->rx_coalesce_usecs > 0xffff || | |
99 | coal->rx_max_coalesced_frames > 0xffff) | |
100 | return -EINVAL; | |
101 | ||
f56bcd80 | 102 | ret = ib_modify_cq(priv->recv_cq, coal->rx_max_coalesced_frames, |
28d52b3c EC |
103 | coal->rx_coalesce_usecs); |
104 | if (ret && ret != -ENOSYS) { | |
105 | ipoib_warn(priv, "failed modifying CQ (%d)\n", ret); | |
106 | return ret; | |
107 | } | |
108 | ||
28d52b3c EC |
109 | priv->ethtool.coalesce_usecs = coal->rx_coalesce_usecs; |
110 | priv->ethtool.max_coalesced_frames = coal->rx_max_coalesced_frames; | |
111 | ||
112 | return 0; | |
113 | } | |
e3614bc9 HWR |
114 | static void ipoib_get_ethtool_stats(struct net_device *dev, |
115 | struct ethtool_stats __always_unused *stats, | |
116 | u64 *data) | |
117 | { | |
118 | int i; | |
119 | struct net_device_stats *net_stats = &dev->stats; | |
120 | u8 *p = (u8 *)net_stats; | |
121 | ||
122 | for (i = 0; i < IPOIB_GLOBAL_STATS_LEN; i++) | |
123 | data[i] = *(u64 *)(p + ipoib_gstrings_stats[i].stat_offset); | |
124 | ||
125 | } | |
126 | static void ipoib_get_strings(struct net_device __always_unused *dev, | |
127 | u32 stringset, u8 *data) | |
128 | { | |
129 | u8 *p = data; | |
130 | int i; | |
131 | ||
132 | switch (stringset) { | |
133 | case ETH_SS_STATS: | |
134 | for (i = 0; i < IPOIB_GLOBAL_STATS_LEN; i++) { | |
135 | memcpy(p, ipoib_gstrings_stats[i].stat_string, | |
136 | ETH_GSTRING_LEN); | |
137 | p += ETH_GSTRING_LEN; | |
138 | } | |
139 | break; | |
140 | case ETH_SS_TEST: | |
141 | default: | |
142 | break; | |
143 | } | |
144 | } | |
145 | static int ipoib_get_sset_count(struct net_device __always_unused *dev, | |
146 | int sset) | |
147 | { | |
148 | switch (sset) { | |
149 | case ETH_SS_STATS: | |
150 | return IPOIB_GLOBAL_STATS_LEN; | |
151 | case ETH_SS_TEST: | |
152 | default: | |
153 | break; | |
154 | } | |
155 | return -EOPNOTSUPP; | |
156 | } | |
28d52b3c | 157 | |
82c24c18 EC |
158 | static const struct ethtool_ops ipoib_ethtool_ops = { |
159 | .get_drvinfo = ipoib_get_drvinfo, | |
28d52b3c EC |
160 | .get_coalesce = ipoib_get_coalesce, |
161 | .set_coalesce = ipoib_set_coalesce, | |
e3614bc9 HWR |
162 | .get_strings = ipoib_get_strings, |
163 | .get_ethtool_stats = ipoib_get_ethtool_stats, | |
164 | .get_sset_count = ipoib_get_sset_count, | |
82c24c18 EC |
165 | }; |
166 | ||
167 | void ipoib_set_ethtool_ops(struct net_device *dev) | |
168 | { | |
7ad24ea4 | 169 | dev->ethtool_ops = &ipoib_ethtool_ops; |
82c24c18 | 170 | } |