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 | |
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 | IPOIB_NETDEV_STAT(multicast), |
57 | }; |
58 | |
59 | #define IPOIB_GLOBAL_STATS_LEN ARRAY_SIZE(ipoib_gstrings_stats) |
60 | |
61 | static void ipoib_get_drvinfo(struct net_device *netdev, |
62 | struct ethtool_drvinfo *drvinfo) |
63 | { |
64 | struct ipoib_dev_priv *priv = ipoib_priv(dev: netdev); |
65 | |
66 | ib_get_device_fw_str(device: priv->ca, str: drvinfo->fw_version); |
67 | |
68 | strscpy(drvinfo->bus_info, dev_name(priv->ca->dev.parent), |
69 | sizeof(drvinfo->bus_info)); |
70 | |
71 | strscpy(drvinfo->driver, "ib_ipoib" , sizeof(drvinfo->driver)); |
72 | } |
73 | |
74 | static int ipoib_get_coalesce(struct net_device *dev, |
75 | struct ethtool_coalesce *coal, |
76 | struct kernel_ethtool_coalesce *kernel_coal, |
77 | struct netlink_ext_ack *extack) |
78 | { |
79 | struct ipoib_dev_priv *priv = ipoib_priv(dev); |
80 | |
81 | coal->rx_coalesce_usecs = priv->ethtool.coalesce_usecs; |
82 | coal->rx_max_coalesced_frames = priv->ethtool.max_coalesced_frames; |
83 | |
84 | return 0; |
85 | } |
86 | |
87 | static int ipoib_set_coalesce(struct net_device *dev, |
88 | struct ethtool_coalesce *coal, |
89 | struct kernel_ethtool_coalesce *kernel_coal, |
90 | struct netlink_ext_ack *extack) |
91 | { |
92 | struct ipoib_dev_priv *priv = ipoib_priv(dev); |
93 | int ret; |
94 | |
95 | /* |
96 | * These values are saved in the private data and returned |
97 | * when ipoib_get_coalesce() is called |
98 | */ |
99 | if (coal->rx_coalesce_usecs > 0xffff || |
100 | coal->rx_max_coalesced_frames > 0xffff) |
101 | return -EINVAL; |
102 | |
103 | ret = rdma_set_cq_moderation(cq: priv->recv_cq, |
104 | cq_count: coal->rx_max_coalesced_frames, |
105 | cq_period: coal->rx_coalesce_usecs); |
106 | if (ret && ret != -EOPNOTSUPP) { |
107 | ipoib_warn(priv, "failed modifying CQ (%d)\n" , ret); |
108 | return ret; |
109 | } |
110 | |
111 | priv->ethtool.coalesce_usecs = coal->rx_coalesce_usecs; |
112 | priv->ethtool.max_coalesced_frames = coal->rx_max_coalesced_frames; |
113 | |
114 | return 0; |
115 | } |
116 | static void ipoib_get_ethtool_stats(struct net_device *dev, |
117 | struct ethtool_stats __always_unused *stats, |
118 | u64 *data) |
119 | { |
120 | int i; |
121 | struct net_device_stats *net_stats = &dev->stats; |
122 | u8 *p = (u8 *)net_stats; |
123 | |
124 | for (i = 0; i < IPOIB_GLOBAL_STATS_LEN; i++) |
125 | data[i] = *(u64 *)(p + ipoib_gstrings_stats[i].stat_offset); |
126 | |
127 | } |
128 | static void ipoib_get_strings(struct net_device __always_unused *dev, |
129 | u32 stringset, u8 *data) |
130 | { |
131 | u8 *p = data; |
132 | int i; |
133 | |
134 | switch (stringset) { |
135 | case ETH_SS_STATS: |
136 | for (i = 0; i < IPOIB_GLOBAL_STATS_LEN; i++) { |
137 | memcpy(p, ipoib_gstrings_stats[i].stat_string, |
138 | ETH_GSTRING_LEN); |
139 | p += ETH_GSTRING_LEN; |
140 | } |
141 | break; |
142 | default: |
143 | break; |
144 | } |
145 | } |
146 | static int ipoib_get_sset_count(struct net_device __always_unused *dev, |
147 | int sset) |
148 | { |
149 | switch (sset) { |
150 | case ETH_SS_STATS: |
151 | return IPOIB_GLOBAL_STATS_LEN; |
152 | default: |
153 | break; |
154 | } |
155 | return -EOPNOTSUPP; |
156 | } |
157 | |
158 | /* Return lane speed in unit of 1e6 bit/sec */ |
159 | static inline int ib_speed_enum_to_int(int speed) |
160 | { |
161 | switch (speed) { |
162 | case IB_SPEED_SDR: |
163 | return SPEED_2500; |
164 | case IB_SPEED_DDR: |
165 | return SPEED_5000; |
166 | case IB_SPEED_QDR: |
167 | case IB_SPEED_FDR10: |
168 | return SPEED_10000; |
169 | case IB_SPEED_FDR: |
170 | return SPEED_14000; |
171 | case IB_SPEED_EDR: |
172 | return SPEED_25000; |
173 | case IB_SPEED_HDR: |
174 | return SPEED_50000; |
175 | case IB_SPEED_NDR: |
176 | return SPEED_100000; |
177 | case IB_SPEED_XDR: |
178 | return SPEED_200000; |
179 | } |
180 | |
181 | return SPEED_UNKNOWN; |
182 | } |
183 | |
184 | static int ipoib_get_link_ksettings(struct net_device *netdev, |
185 | struct ethtool_link_ksettings *cmd) |
186 | { |
187 | struct ipoib_dev_priv *priv = ipoib_priv(dev: netdev); |
188 | struct ib_port_attr attr; |
189 | int ret, speed, width; |
190 | |
191 | if (!netif_carrier_ok(dev: netdev)) { |
192 | cmd->base.speed = SPEED_UNKNOWN; |
193 | cmd->base.duplex = DUPLEX_UNKNOWN; |
194 | return 0; |
195 | } |
196 | |
197 | ret = ib_query_port(device: priv->ca, port_num: priv->port, port_attr: &attr); |
198 | if (ret < 0) |
199 | return -EINVAL; |
200 | |
201 | speed = ib_speed_enum_to_int(speed: attr.active_speed); |
202 | width = ib_width_enum_to_int(width: attr.active_width); |
203 | |
204 | if (speed < 0 || width < 0) |
205 | return -EINVAL; |
206 | |
207 | /* Except the following are set, the other members of |
208 | * the struct ethtool_link_settings are initialized to |
209 | * zero in the function __ethtool_get_link_ksettings. |
210 | */ |
211 | cmd->base.speed = speed * width; |
212 | cmd->base.duplex = DUPLEX_FULL; |
213 | |
214 | cmd->base.phy_address = 0xFF; |
215 | |
216 | cmd->base.autoneg = AUTONEG_ENABLE; |
217 | cmd->base.port = PORT_OTHER; |
218 | |
219 | return 0; |
220 | } |
221 | |
222 | static const struct ethtool_ops ipoib_ethtool_ops = { |
223 | .supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS | |
224 | ETHTOOL_COALESCE_RX_MAX_FRAMES, |
225 | .get_link_ksettings = ipoib_get_link_ksettings, |
226 | .get_drvinfo = ipoib_get_drvinfo, |
227 | .get_coalesce = ipoib_get_coalesce, |
228 | .set_coalesce = ipoib_set_coalesce, |
229 | .get_strings = ipoib_get_strings, |
230 | .get_ethtool_stats = ipoib_get_ethtool_stats, |
231 | .get_sset_count = ipoib_get_sset_count, |
232 | .get_link = ethtool_op_get_link, |
233 | }; |
234 | |
235 | void ipoib_set_ethtool_ops(struct net_device *dev) |
236 | { |
237 | dev->ethtool_ops = &ipoib_ethtool_ops; |
238 | } |
239 | |