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1// SPDX-License-Identifier: GPL-2.0-only
2
3#include "netlink.h"
4#include "common.h"
5#include "bitset.h"
6
7/* LINKMODES_GET */
8
9struct linkmodes_req_info {
10 struct ethnl_req_info base;
11};
12
13struct linkmodes_reply_data {
14 struct ethnl_reply_data base;
15 struct ethtool_link_ksettings ksettings;
16 struct ethtool_link_settings *lsettings;
17 bool peer_empty;
18};
19
20#define LINKMODES_REPDATA(__reply_base) \
21 container_of(__reply_base, struct linkmodes_reply_data, base)
22
23const struct nla_policy ethnl_linkmodes_get_policy[] = {
24 [ETHTOOL_A_LINKMODES_HEADER] =
25 NLA_POLICY_NESTED(ethnl_header_policy),
26};
27
28static int linkmodes_prepare_data(const struct ethnl_req_info *req_base,
29 struct ethnl_reply_data *reply_base,
30 const struct genl_info *info)
31{
32 struct linkmodes_reply_data *data = LINKMODES_REPDATA(reply_base);
33 struct net_device *dev = reply_base->dev;
34 int ret;
35
36 data->lsettings = &data->ksettings.base;
37
38 ret = ethnl_ops_begin(dev);
39 if (ret < 0)
40 return ret;
41
42 ret = __ethtool_get_link_ksettings(dev, &data->ksettings);
43 if (ret < 0) {
44 GENL_SET_ERR_MSG(info, "failed to retrieve link settings");
45 goto out;
46 }
47
48 if (!dev->ethtool_ops->cap_link_lanes_supported)
49 data->ksettings.lanes = 0;
50
51 data->peer_empty =
52 bitmap_empty(data->ksettings.link_modes.lp_advertising,
53 __ETHTOOL_LINK_MODE_MASK_NBITS);
54
55out:
56 ethnl_ops_complete(dev);
57 return ret;
58}
59
60static int linkmodes_reply_size(const struct ethnl_req_info *req_base,
61 const struct ethnl_reply_data *reply_base)
62{
63 const struct linkmodes_reply_data *data = LINKMODES_REPDATA(reply_base);
64 const struct ethtool_link_ksettings *ksettings = &data->ksettings;
65 const struct ethtool_link_settings *lsettings = &ksettings->base;
66 bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
67 int len, ret;
68
69 len = nla_total_size(sizeof(u8)) /* LINKMODES_AUTONEG */
70 + nla_total_size(sizeof(u32)) /* LINKMODES_SPEED */
71 + nla_total_size(sizeof(u32)) /* LINKMODES_LANES */
72 + nla_total_size(sizeof(u8)) /* LINKMODES_DUPLEX */
73 + nla_total_size(sizeof(u8)) /* LINKMODES_RATE_MATCHING */
74 + 0;
75 ret = ethnl_bitset_size(ksettings->link_modes.advertising,
76 ksettings->link_modes.supported,
77 __ETHTOOL_LINK_MODE_MASK_NBITS,
78 link_mode_names, compact);
79 if (ret < 0)
80 return ret;
81 len += ret;
82 if (!data->peer_empty) {
83 ret = ethnl_bitset_size(ksettings->link_modes.lp_advertising,
84 NULL, __ETHTOOL_LINK_MODE_MASK_NBITS,
85 link_mode_names, compact);
86 if (ret < 0)
87 return ret;
88 len += ret;
89 }
90
91 if (lsettings->master_slave_cfg != MASTER_SLAVE_CFG_UNSUPPORTED)
92 len += nla_total_size(sizeof(u8));
93
94 if (lsettings->master_slave_state != MASTER_SLAVE_STATE_UNSUPPORTED)
95 len += nla_total_size(sizeof(u8));
96
97 return len;
98}
99
100static int linkmodes_fill_reply(struct sk_buff *skb,
101 const struct ethnl_req_info *req_base,
102 const struct ethnl_reply_data *reply_base)
103{
104 const struct linkmodes_reply_data *data = LINKMODES_REPDATA(reply_base);
105 const struct ethtool_link_ksettings *ksettings = &data->ksettings;
106 const struct ethtool_link_settings *lsettings = &ksettings->base;
107 bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
108 int ret;
109
110 if (nla_put_u8(skb, ETHTOOL_A_LINKMODES_AUTONEG, lsettings->autoneg))
111 return -EMSGSIZE;
112
113 ret = ethnl_put_bitset(skb, ETHTOOL_A_LINKMODES_OURS,
114 ksettings->link_modes.advertising,
115 ksettings->link_modes.supported,
116 __ETHTOOL_LINK_MODE_MASK_NBITS, link_mode_names,
117 compact);
118 if (ret < 0)
119 return -EMSGSIZE;
120 if (!data->peer_empty) {
121 ret = ethnl_put_bitset(skb, ETHTOOL_A_LINKMODES_PEER,
122 ksettings->link_modes.lp_advertising,
123 NULL, __ETHTOOL_LINK_MODE_MASK_NBITS,
124 link_mode_names, compact);
125 if (ret < 0)
126 return -EMSGSIZE;
127 }
128
129 if (nla_put_u32(skb, ETHTOOL_A_LINKMODES_SPEED, lsettings->speed) ||
130 nla_put_u8(skb, ETHTOOL_A_LINKMODES_DUPLEX, lsettings->duplex))
131 return -EMSGSIZE;
132
133 if (ksettings->lanes &&
134 nla_put_u32(skb, ETHTOOL_A_LINKMODES_LANES, ksettings->lanes))
135 return -EMSGSIZE;
136
137 if (lsettings->master_slave_cfg != MASTER_SLAVE_CFG_UNSUPPORTED &&
138 nla_put_u8(skb, ETHTOOL_A_LINKMODES_MASTER_SLAVE_CFG,
139 lsettings->master_slave_cfg))
140 return -EMSGSIZE;
141
142 if (lsettings->master_slave_state != MASTER_SLAVE_STATE_UNSUPPORTED &&
143 nla_put_u8(skb, ETHTOOL_A_LINKMODES_MASTER_SLAVE_STATE,
144 lsettings->master_slave_state))
145 return -EMSGSIZE;
146
147 if (nla_put_u8(skb, ETHTOOL_A_LINKMODES_RATE_MATCHING,
148 lsettings->rate_matching))
149 return -EMSGSIZE;
150
151 return 0;
152}
153
154/* LINKMODES_SET */
155
156const struct nla_policy ethnl_linkmodes_set_policy[] = {
157 [ETHTOOL_A_LINKMODES_HEADER] =
158 NLA_POLICY_NESTED(ethnl_header_policy),
159 [ETHTOOL_A_LINKMODES_AUTONEG] = { .type = NLA_U8 },
160 [ETHTOOL_A_LINKMODES_OURS] = { .type = NLA_NESTED },
161 [ETHTOOL_A_LINKMODES_SPEED] = { .type = NLA_U32 },
162 [ETHTOOL_A_LINKMODES_DUPLEX] = { .type = NLA_U8 },
163 [ETHTOOL_A_LINKMODES_MASTER_SLAVE_CFG] = { .type = NLA_U8 },
164 [ETHTOOL_A_LINKMODES_LANES] = NLA_POLICY_RANGE(NLA_U32, 1, 8),
165};
166
167/* Set advertised link modes to all supported modes matching requested speed,
168 * lanes and duplex values. Called when autonegotiation is on, speed, lanes or
169 * duplex is requested but no link mode change. This is done in userspace with
170 * ioctl() interface, move it into kernel for netlink.
171 * Returns true if advertised modes bitmap was modified.
172 */
173static bool ethnl_auto_linkmodes(struct ethtool_link_ksettings *ksettings,
174 bool req_speed, bool req_lanes, bool req_duplex)
175{
176 unsigned long *advertising = ksettings->link_modes.advertising;
177 unsigned long *supported = ksettings->link_modes.supported;
178 DECLARE_BITMAP(old_adv, __ETHTOOL_LINK_MODE_MASK_NBITS);
179 unsigned int i;
180
181 bitmap_copy(old_adv, advertising, __ETHTOOL_LINK_MODE_MASK_NBITS);
182
183 for (i = 0; i < __ETHTOOL_LINK_MODE_MASK_NBITS; i++) {
184 const struct link_mode_info *info = &link_mode_params[i];
185
186 if (info->speed == SPEED_UNKNOWN)
187 continue;
188 if (test_bit(i, supported) &&
189 (!req_speed || info->speed == ksettings->base.speed) &&
190 (!req_lanes || info->lanes == ksettings->lanes) &&
191 (!req_duplex || info->duplex == ksettings->base.duplex))
192 set_bit(i, advertising);
193 else
194 clear_bit(i, advertising);
195 }
196
197 return !bitmap_equal(old_adv, advertising,
198 __ETHTOOL_LINK_MODE_MASK_NBITS);
199}
200
201static bool ethnl_validate_master_slave_cfg(u8 cfg)
202{
203 switch (cfg) {
204 case MASTER_SLAVE_CFG_MASTER_PREFERRED:
205 case MASTER_SLAVE_CFG_SLAVE_PREFERRED:
206 case MASTER_SLAVE_CFG_MASTER_FORCE:
207 case MASTER_SLAVE_CFG_SLAVE_FORCE:
208 return true;
209 }
210
211 return false;
212}
213
214static int ethnl_check_linkmodes(struct genl_info *info, struct nlattr **tb)
215{
216 const struct nlattr *master_slave_cfg, *lanes_cfg;
217
218 master_slave_cfg = tb[ETHTOOL_A_LINKMODES_MASTER_SLAVE_CFG];
219 if (master_slave_cfg &&
220 !ethnl_validate_master_slave_cfg(nla_get_u8(master_slave_cfg))) {
221 NL_SET_ERR_MSG_ATTR(info->extack, master_slave_cfg,
222 "master/slave value is invalid");
223 return -EOPNOTSUPP;
224 }
225
226 lanes_cfg = tb[ETHTOOL_A_LINKMODES_LANES];
227 if (lanes_cfg && !is_power_of_2(nla_get_u32(lanes_cfg))) {
228 NL_SET_ERR_MSG_ATTR(info->extack, lanes_cfg,
229 "lanes value is invalid");
230 return -EINVAL;
231 }
232
233 return 0;
234}
235
236static int ethnl_update_linkmodes(struct genl_info *info, struct nlattr **tb,
237 struct ethtool_link_ksettings *ksettings,
238 bool *mod, const struct net_device *dev)
239{
240 struct ethtool_link_settings *lsettings = &ksettings->base;
241 bool req_speed, req_lanes, req_duplex;
242 const struct nlattr *master_slave_cfg, *lanes_cfg;
243 int ret;
244
245 master_slave_cfg = tb[ETHTOOL_A_LINKMODES_MASTER_SLAVE_CFG];
246 if (master_slave_cfg) {
247 if (lsettings->master_slave_cfg == MASTER_SLAVE_CFG_UNSUPPORTED) {
248 NL_SET_ERR_MSG_ATTR(info->extack, master_slave_cfg,
249 "master/slave configuration not supported by device");
250 return -EOPNOTSUPP;
251 }
252 }
253
254 *mod = false;
255 req_speed = tb[ETHTOOL_A_LINKMODES_SPEED];
256 req_lanes = tb[ETHTOOL_A_LINKMODES_LANES];
257 req_duplex = tb[ETHTOOL_A_LINKMODES_DUPLEX];
258
259 ethnl_update_u8(&lsettings->autoneg, tb[ETHTOOL_A_LINKMODES_AUTONEG],
260 mod);
261
262 lanes_cfg = tb[ETHTOOL_A_LINKMODES_LANES];
263 if (lanes_cfg) {
264 /* If autoneg is off and lanes parameter is not supported by the
265 * driver, return an error.
266 */
267 if (!lsettings->autoneg &&
268 !dev->ethtool_ops->cap_link_lanes_supported) {
269 NL_SET_ERR_MSG_ATTR(info->extack, lanes_cfg,
270 "lanes configuration not supported by device");
271 return -EOPNOTSUPP;
272 }
273 } else if (!lsettings->autoneg && ksettings->lanes) {
274 /* If autoneg is off and lanes parameter is not passed from user but
275 * it was defined previously then set the lanes parameter to 0.
276 */
277 ksettings->lanes = 0;
278 *mod = true;
279 }
280
281 ret = ethnl_update_bitset(ksettings->link_modes.advertising,
282 __ETHTOOL_LINK_MODE_MASK_NBITS,
283 tb[ETHTOOL_A_LINKMODES_OURS], link_mode_names,
284 info->extack, mod);
285 if (ret < 0)
286 return ret;
287 ethnl_update_u32(&lsettings->speed, tb[ETHTOOL_A_LINKMODES_SPEED],
288 mod);
289 ethnl_update_u32(&ksettings->lanes, lanes_cfg, mod);
290 ethnl_update_u8(&lsettings->duplex, tb[ETHTOOL_A_LINKMODES_DUPLEX],
291 mod);
292 ethnl_update_u8(&lsettings->master_slave_cfg, master_slave_cfg, mod);
293
294 if (!tb[ETHTOOL_A_LINKMODES_OURS] && lsettings->autoneg &&
295 (req_speed || req_lanes || req_duplex) &&
296 ethnl_auto_linkmodes(ksettings, req_speed, req_lanes, req_duplex))
297 *mod = true;
298
299 return 0;
300}
301
302static int
303ethnl_set_linkmodes_validate(struct ethnl_req_info *req_info,
304 struct genl_info *info)
305{
306 const struct ethtool_ops *ops = req_info->dev->ethtool_ops;
307 int ret;
308
309 ret = ethnl_check_linkmodes(info, info->attrs);
310 if (ret < 0)
311 return ret;
312
313 if (!ops->get_link_ksettings || !ops->set_link_ksettings)
314 return -EOPNOTSUPP;
315 return 1;
316}
317
318static int
319ethnl_set_linkmodes(struct ethnl_req_info *req_info, struct genl_info *info)
320{
321 struct ethtool_link_ksettings ksettings = {};
322 struct net_device *dev = req_info->dev;
323 struct nlattr **tb = info->attrs;
324 bool mod = false;
325 int ret;
326
327 ret = __ethtool_get_link_ksettings(dev, &ksettings);
328 if (ret < 0) {
329 GENL_SET_ERR_MSG(info, "failed to retrieve link settings");
330 return ret;
331 }
332
333 ret = ethnl_update_linkmodes(info, tb, &ksettings, &mod, dev);
334 if (ret < 0)
335 return ret;
336 if (!mod)
337 return 0;
338
339 ret = dev->ethtool_ops->set_link_ksettings(dev, &ksettings);
340 if (ret < 0) {
341 GENL_SET_ERR_MSG(info, "link settings update failed");
342 return ret;
343 }
344
345 return 1;
346}
347
348const struct ethnl_request_ops ethnl_linkmodes_request_ops = {
349 .request_cmd = ETHTOOL_MSG_LINKMODES_GET,
350 .reply_cmd = ETHTOOL_MSG_LINKMODES_GET_REPLY,
351 .hdr_attr = ETHTOOL_A_LINKMODES_HEADER,
352 .req_info_size = sizeof(struct linkmodes_req_info),
353 .reply_data_size = sizeof(struct linkmodes_reply_data),
354
355 .prepare_data = linkmodes_prepare_data,
356 .reply_size = linkmodes_reply_size,
357 .fill_reply = linkmodes_fill_reply,
358
359 .set_validate = ethnl_set_linkmodes_validate,
360 .set = ethnl_set_linkmodes,
361 .set_ntf_cmd = ETHTOOL_MSG_LINKMODES_NTF,
362};
1// SPDX-License-Identifier: GPL-2.0-only
2
3#include "netlink.h"
4#include "common.h"
5#include "bitset.h"
6
7struct linkmodes_req_info {
8 struct ethnl_req_info base;
9};
10
11struct linkmodes_reply_data {
12 struct ethnl_reply_data base;
13 struct ethtool_link_ksettings ksettings;
14 struct ethtool_link_settings *lsettings;
15 bool peer_empty;
16};
17
18#define LINKMODES_REPDATA(__reply_base) \
19 container_of(__reply_base, struct linkmodes_reply_data, base)
20
21static const struct nla_policy
22linkmodes_get_policy[ETHTOOL_A_LINKMODES_MAX + 1] = {
23 [ETHTOOL_A_LINKMODES_UNSPEC] = { .type = NLA_REJECT },
24 [ETHTOOL_A_LINKMODES_HEADER] = { .type = NLA_NESTED },
25 [ETHTOOL_A_LINKMODES_AUTONEG] = { .type = NLA_REJECT },
26 [ETHTOOL_A_LINKMODES_OURS] = { .type = NLA_REJECT },
27 [ETHTOOL_A_LINKMODES_PEER] = { .type = NLA_REJECT },
28 [ETHTOOL_A_LINKMODES_SPEED] = { .type = NLA_REJECT },
29 [ETHTOOL_A_LINKMODES_DUPLEX] = { .type = NLA_REJECT },
30 [ETHTOOL_A_LINKMODES_MASTER_SLAVE_CFG] = { .type = NLA_REJECT },
31 [ETHTOOL_A_LINKMODES_MASTER_SLAVE_STATE] = { .type = NLA_REJECT },
32};
33
34static int linkmodes_prepare_data(const struct ethnl_req_info *req_base,
35 struct ethnl_reply_data *reply_base,
36 struct genl_info *info)
37{
38 struct linkmodes_reply_data *data = LINKMODES_REPDATA(reply_base);
39 struct net_device *dev = reply_base->dev;
40 int ret;
41
42 data->lsettings = &data->ksettings.base;
43
44 ret = ethnl_ops_begin(dev);
45 if (ret < 0)
46 return ret;
47
48 ret = __ethtool_get_link_ksettings(dev, &data->ksettings);
49 if (ret < 0 && info) {
50 GENL_SET_ERR_MSG(info, "failed to retrieve link settings");
51 goto out;
52 }
53
54 data->peer_empty =
55 bitmap_empty(data->ksettings.link_modes.lp_advertising,
56 __ETHTOOL_LINK_MODE_MASK_NBITS);
57
58out:
59 ethnl_ops_complete(dev);
60 return ret;
61}
62
63static int linkmodes_reply_size(const struct ethnl_req_info *req_base,
64 const struct ethnl_reply_data *reply_base)
65{
66 const struct linkmodes_reply_data *data = LINKMODES_REPDATA(reply_base);
67 const struct ethtool_link_ksettings *ksettings = &data->ksettings;
68 const struct ethtool_link_settings *lsettings = &ksettings->base;
69 bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
70 int len, ret;
71
72 len = nla_total_size(sizeof(u8)) /* LINKMODES_AUTONEG */
73 + nla_total_size(sizeof(u32)) /* LINKMODES_SPEED */
74 + nla_total_size(sizeof(u8)) /* LINKMODES_DUPLEX */
75 + 0;
76 ret = ethnl_bitset_size(ksettings->link_modes.advertising,
77 ksettings->link_modes.supported,
78 __ETHTOOL_LINK_MODE_MASK_NBITS,
79 link_mode_names, compact);
80 if (ret < 0)
81 return ret;
82 len += ret;
83 if (!data->peer_empty) {
84 ret = ethnl_bitset_size(ksettings->link_modes.lp_advertising,
85 NULL, __ETHTOOL_LINK_MODE_MASK_NBITS,
86 link_mode_names, compact);
87 if (ret < 0)
88 return ret;
89 len += ret;
90 }
91
92 if (lsettings->master_slave_cfg != MASTER_SLAVE_CFG_UNSUPPORTED)
93 len += nla_total_size(sizeof(u8));
94
95 if (lsettings->master_slave_state != MASTER_SLAVE_STATE_UNSUPPORTED)
96 len += nla_total_size(sizeof(u8));
97
98 return len;
99}
100
101static int linkmodes_fill_reply(struct sk_buff *skb,
102 const struct ethnl_req_info *req_base,
103 const struct ethnl_reply_data *reply_base)
104{
105 const struct linkmodes_reply_data *data = LINKMODES_REPDATA(reply_base);
106 const struct ethtool_link_ksettings *ksettings = &data->ksettings;
107 const struct ethtool_link_settings *lsettings = &ksettings->base;
108 bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
109 int ret;
110
111 if (nla_put_u8(skb, ETHTOOL_A_LINKMODES_AUTONEG, lsettings->autoneg))
112 return -EMSGSIZE;
113
114 ret = ethnl_put_bitset(skb, ETHTOOL_A_LINKMODES_OURS,
115 ksettings->link_modes.advertising,
116 ksettings->link_modes.supported,
117 __ETHTOOL_LINK_MODE_MASK_NBITS, link_mode_names,
118 compact);
119 if (ret < 0)
120 return -EMSGSIZE;
121 if (!data->peer_empty) {
122 ret = ethnl_put_bitset(skb, ETHTOOL_A_LINKMODES_PEER,
123 ksettings->link_modes.lp_advertising,
124 NULL, __ETHTOOL_LINK_MODE_MASK_NBITS,
125 link_mode_names, compact);
126 if (ret < 0)
127 return -EMSGSIZE;
128 }
129
130 if (nla_put_u32(skb, ETHTOOL_A_LINKMODES_SPEED, lsettings->speed) ||
131 nla_put_u8(skb, ETHTOOL_A_LINKMODES_DUPLEX, lsettings->duplex))
132 return -EMSGSIZE;
133
134 if (lsettings->master_slave_cfg != MASTER_SLAVE_CFG_UNSUPPORTED &&
135 nla_put_u8(skb, ETHTOOL_A_LINKMODES_MASTER_SLAVE_CFG,
136 lsettings->master_slave_cfg))
137 return -EMSGSIZE;
138
139 if (lsettings->master_slave_state != MASTER_SLAVE_STATE_UNSUPPORTED &&
140 nla_put_u8(skb, ETHTOOL_A_LINKMODES_MASTER_SLAVE_STATE,
141 lsettings->master_slave_state))
142 return -EMSGSIZE;
143
144 return 0;
145}
146
147const struct ethnl_request_ops ethnl_linkmodes_request_ops = {
148 .request_cmd = ETHTOOL_MSG_LINKMODES_GET,
149 .reply_cmd = ETHTOOL_MSG_LINKMODES_GET_REPLY,
150 .hdr_attr = ETHTOOL_A_LINKMODES_HEADER,
151 .max_attr = ETHTOOL_A_LINKMODES_MAX,
152 .req_info_size = sizeof(struct linkmodes_req_info),
153 .reply_data_size = sizeof(struct linkmodes_reply_data),
154 .request_policy = linkmodes_get_policy,
155
156 .prepare_data = linkmodes_prepare_data,
157 .reply_size = linkmodes_reply_size,
158 .fill_reply = linkmodes_fill_reply,
159};
160
161/* LINKMODES_SET */
162
163struct link_mode_info {
164 int speed;
165 u8 duplex;
166};
167
168#define __DEFINE_LINK_MODE_PARAMS(_speed, _type, _duplex) \
169 [ETHTOOL_LINK_MODE(_speed, _type, _duplex)] = { \
170 .speed = SPEED_ ## _speed, \
171 .duplex = __DUPLEX_ ## _duplex \
172 }
173#define __DUPLEX_Half DUPLEX_HALF
174#define __DUPLEX_Full DUPLEX_FULL
175#define __DEFINE_SPECIAL_MODE_PARAMS(_mode) \
176 [ETHTOOL_LINK_MODE_ ## _mode ## _BIT] = { \
177 .speed = SPEED_UNKNOWN, \
178 .duplex = DUPLEX_UNKNOWN, \
179 }
180
181static const struct link_mode_info link_mode_params[] = {
182 __DEFINE_LINK_MODE_PARAMS(10, T, Half),
183 __DEFINE_LINK_MODE_PARAMS(10, T, Full),
184 __DEFINE_LINK_MODE_PARAMS(100, T, Half),
185 __DEFINE_LINK_MODE_PARAMS(100, T, Full),
186 __DEFINE_LINK_MODE_PARAMS(1000, T, Half),
187 __DEFINE_LINK_MODE_PARAMS(1000, T, Full),
188 __DEFINE_SPECIAL_MODE_PARAMS(Autoneg),
189 __DEFINE_SPECIAL_MODE_PARAMS(TP),
190 __DEFINE_SPECIAL_MODE_PARAMS(AUI),
191 __DEFINE_SPECIAL_MODE_PARAMS(MII),
192 __DEFINE_SPECIAL_MODE_PARAMS(FIBRE),
193 __DEFINE_SPECIAL_MODE_PARAMS(BNC),
194 __DEFINE_LINK_MODE_PARAMS(10000, T, Full),
195 __DEFINE_SPECIAL_MODE_PARAMS(Pause),
196 __DEFINE_SPECIAL_MODE_PARAMS(Asym_Pause),
197 __DEFINE_LINK_MODE_PARAMS(2500, X, Full),
198 __DEFINE_SPECIAL_MODE_PARAMS(Backplane),
199 __DEFINE_LINK_MODE_PARAMS(1000, KX, Full),
200 __DEFINE_LINK_MODE_PARAMS(10000, KX4, Full),
201 __DEFINE_LINK_MODE_PARAMS(10000, KR, Full),
202 [ETHTOOL_LINK_MODE_10000baseR_FEC_BIT] = {
203 .speed = SPEED_10000,
204 .duplex = DUPLEX_FULL,
205 },
206 __DEFINE_LINK_MODE_PARAMS(20000, MLD2, Full),
207 __DEFINE_LINK_MODE_PARAMS(20000, KR2, Full),
208 __DEFINE_LINK_MODE_PARAMS(40000, KR4, Full),
209 __DEFINE_LINK_MODE_PARAMS(40000, CR4, Full),
210 __DEFINE_LINK_MODE_PARAMS(40000, SR4, Full),
211 __DEFINE_LINK_MODE_PARAMS(40000, LR4, Full),
212 __DEFINE_LINK_MODE_PARAMS(56000, KR4, Full),
213 __DEFINE_LINK_MODE_PARAMS(56000, CR4, Full),
214 __DEFINE_LINK_MODE_PARAMS(56000, SR4, Full),
215 __DEFINE_LINK_MODE_PARAMS(56000, LR4, Full),
216 __DEFINE_LINK_MODE_PARAMS(25000, CR, Full),
217 __DEFINE_LINK_MODE_PARAMS(25000, KR, Full),
218 __DEFINE_LINK_MODE_PARAMS(25000, SR, Full),
219 __DEFINE_LINK_MODE_PARAMS(50000, CR2, Full),
220 __DEFINE_LINK_MODE_PARAMS(50000, KR2, Full),
221 __DEFINE_LINK_MODE_PARAMS(100000, KR4, Full),
222 __DEFINE_LINK_MODE_PARAMS(100000, SR4, Full),
223 __DEFINE_LINK_MODE_PARAMS(100000, CR4, Full),
224 __DEFINE_LINK_MODE_PARAMS(100000, LR4_ER4, Full),
225 __DEFINE_LINK_MODE_PARAMS(50000, SR2, Full),
226 __DEFINE_LINK_MODE_PARAMS(1000, X, Full),
227 __DEFINE_LINK_MODE_PARAMS(10000, CR, Full),
228 __DEFINE_LINK_MODE_PARAMS(10000, SR, Full),
229 __DEFINE_LINK_MODE_PARAMS(10000, LR, Full),
230 __DEFINE_LINK_MODE_PARAMS(10000, LRM, Full),
231 __DEFINE_LINK_MODE_PARAMS(10000, ER, Full),
232 __DEFINE_LINK_MODE_PARAMS(2500, T, Full),
233 __DEFINE_LINK_MODE_PARAMS(5000, T, Full),
234 __DEFINE_SPECIAL_MODE_PARAMS(FEC_NONE),
235 __DEFINE_SPECIAL_MODE_PARAMS(FEC_RS),
236 __DEFINE_SPECIAL_MODE_PARAMS(FEC_BASER),
237 __DEFINE_LINK_MODE_PARAMS(50000, KR, Full),
238 __DEFINE_LINK_MODE_PARAMS(50000, SR, Full),
239 __DEFINE_LINK_MODE_PARAMS(50000, CR, Full),
240 __DEFINE_LINK_MODE_PARAMS(50000, LR_ER_FR, Full),
241 __DEFINE_LINK_MODE_PARAMS(50000, DR, Full),
242 __DEFINE_LINK_MODE_PARAMS(100000, KR2, Full),
243 __DEFINE_LINK_MODE_PARAMS(100000, SR2, Full),
244 __DEFINE_LINK_MODE_PARAMS(100000, CR2, Full),
245 __DEFINE_LINK_MODE_PARAMS(100000, LR2_ER2_FR2, Full),
246 __DEFINE_LINK_MODE_PARAMS(100000, DR2, Full),
247 __DEFINE_LINK_MODE_PARAMS(200000, KR4, Full),
248 __DEFINE_LINK_MODE_PARAMS(200000, SR4, Full),
249 __DEFINE_LINK_MODE_PARAMS(200000, LR4_ER4_FR4, Full),
250 __DEFINE_LINK_MODE_PARAMS(200000, DR4, Full),
251 __DEFINE_LINK_MODE_PARAMS(200000, CR4, Full),
252 __DEFINE_LINK_MODE_PARAMS(100, T1, Full),
253 __DEFINE_LINK_MODE_PARAMS(1000, T1, Full),
254 __DEFINE_LINK_MODE_PARAMS(400000, KR8, Full),
255 __DEFINE_LINK_MODE_PARAMS(400000, SR8, Full),
256 __DEFINE_LINK_MODE_PARAMS(400000, LR8_ER8_FR8, Full),
257 __DEFINE_LINK_MODE_PARAMS(400000, DR8, Full),
258 __DEFINE_LINK_MODE_PARAMS(400000, CR8, Full),
259 __DEFINE_SPECIAL_MODE_PARAMS(FEC_LLRS),
260 __DEFINE_LINK_MODE_PARAMS(100000, KR, Full),
261 __DEFINE_LINK_MODE_PARAMS(100000, SR, Full),
262 __DEFINE_LINK_MODE_PARAMS(100000, LR_ER_FR, Full),
263 __DEFINE_LINK_MODE_PARAMS(100000, DR, Full),
264 __DEFINE_LINK_MODE_PARAMS(100000, CR, Full),
265 __DEFINE_LINK_MODE_PARAMS(200000, KR2, Full),
266 __DEFINE_LINK_MODE_PARAMS(200000, SR2, Full),
267 __DEFINE_LINK_MODE_PARAMS(200000, LR2_ER2_FR2, Full),
268 __DEFINE_LINK_MODE_PARAMS(200000, DR2, Full),
269 __DEFINE_LINK_MODE_PARAMS(200000, CR2, Full),
270 __DEFINE_LINK_MODE_PARAMS(400000, KR4, Full),
271 __DEFINE_LINK_MODE_PARAMS(400000, SR4, Full),
272 __DEFINE_LINK_MODE_PARAMS(400000, LR4_ER4_FR4, Full),
273 __DEFINE_LINK_MODE_PARAMS(400000, DR4, Full),
274 __DEFINE_LINK_MODE_PARAMS(400000, CR4, Full),
275};
276
277static const struct nla_policy
278linkmodes_set_policy[ETHTOOL_A_LINKMODES_MAX + 1] = {
279 [ETHTOOL_A_LINKMODES_UNSPEC] = { .type = NLA_REJECT },
280 [ETHTOOL_A_LINKMODES_HEADER] = { .type = NLA_NESTED },
281 [ETHTOOL_A_LINKMODES_AUTONEG] = { .type = NLA_U8 },
282 [ETHTOOL_A_LINKMODES_OURS] = { .type = NLA_NESTED },
283 [ETHTOOL_A_LINKMODES_PEER] = { .type = NLA_REJECT },
284 [ETHTOOL_A_LINKMODES_SPEED] = { .type = NLA_U32 },
285 [ETHTOOL_A_LINKMODES_DUPLEX] = { .type = NLA_U8 },
286 [ETHTOOL_A_LINKMODES_MASTER_SLAVE_CFG] = { .type = NLA_U8 },
287 [ETHTOOL_A_LINKMODES_MASTER_SLAVE_STATE] = { .type = NLA_REJECT },
288};
289
290/* Set advertised link modes to all supported modes matching requested speed
291 * and duplex values. Called when autonegotiation is on, speed or duplex is
292 * requested but no link mode change. This is done in userspace with ioctl()
293 * interface, move it into kernel for netlink.
294 * Returns true if advertised modes bitmap was modified.
295 */
296static bool ethnl_auto_linkmodes(struct ethtool_link_ksettings *ksettings,
297 bool req_speed, bool req_duplex)
298{
299 unsigned long *advertising = ksettings->link_modes.advertising;
300 unsigned long *supported = ksettings->link_modes.supported;
301 DECLARE_BITMAP(old_adv, __ETHTOOL_LINK_MODE_MASK_NBITS);
302 unsigned int i;
303
304 BUILD_BUG_ON(ARRAY_SIZE(link_mode_params) !=
305 __ETHTOOL_LINK_MODE_MASK_NBITS);
306
307 bitmap_copy(old_adv, advertising, __ETHTOOL_LINK_MODE_MASK_NBITS);
308
309 for (i = 0; i < __ETHTOOL_LINK_MODE_MASK_NBITS; i++) {
310 const struct link_mode_info *info = &link_mode_params[i];
311
312 if (info->speed == SPEED_UNKNOWN)
313 continue;
314 if (test_bit(i, supported) &&
315 (!req_speed || info->speed == ksettings->base.speed) &&
316 (!req_duplex || info->duplex == ksettings->base.duplex))
317 set_bit(i, advertising);
318 else
319 clear_bit(i, advertising);
320 }
321
322 return !bitmap_equal(old_adv, advertising,
323 __ETHTOOL_LINK_MODE_MASK_NBITS);
324}
325
326static bool ethnl_validate_master_slave_cfg(u8 cfg)
327{
328 switch (cfg) {
329 case MASTER_SLAVE_CFG_MASTER_PREFERRED:
330 case MASTER_SLAVE_CFG_SLAVE_PREFERRED:
331 case MASTER_SLAVE_CFG_MASTER_FORCE:
332 case MASTER_SLAVE_CFG_SLAVE_FORCE:
333 return true;
334 }
335
336 return false;
337}
338
339static int ethnl_update_linkmodes(struct genl_info *info, struct nlattr **tb,
340 struct ethtool_link_ksettings *ksettings,
341 bool *mod)
342{
343 struct ethtool_link_settings *lsettings = &ksettings->base;
344 bool req_speed, req_duplex;
345 const struct nlattr *master_slave_cfg;
346 int ret;
347
348 master_slave_cfg = tb[ETHTOOL_A_LINKMODES_MASTER_SLAVE_CFG];
349 if (master_slave_cfg) {
350 u8 cfg = nla_get_u8(master_slave_cfg);
351
352 if (lsettings->master_slave_cfg == MASTER_SLAVE_CFG_UNSUPPORTED) {
353 NL_SET_ERR_MSG_ATTR(info->extack, master_slave_cfg,
354 "master/slave configuration not supported by device");
355 return -EOPNOTSUPP;
356 }
357
358 if (!ethnl_validate_master_slave_cfg(cfg)) {
359 NL_SET_ERR_MSG_ATTR(info->extack, master_slave_cfg,
360 "master/slave value is invalid");
361 return -EOPNOTSUPP;
362 }
363 }
364
365 *mod = false;
366 req_speed = tb[ETHTOOL_A_LINKMODES_SPEED];
367 req_duplex = tb[ETHTOOL_A_LINKMODES_DUPLEX];
368
369 ethnl_update_u8(&lsettings->autoneg, tb[ETHTOOL_A_LINKMODES_AUTONEG],
370 mod);
371 ret = ethnl_update_bitset(ksettings->link_modes.advertising,
372 __ETHTOOL_LINK_MODE_MASK_NBITS,
373 tb[ETHTOOL_A_LINKMODES_OURS], link_mode_names,
374 info->extack, mod);
375 if (ret < 0)
376 return ret;
377 ethnl_update_u32(&lsettings->speed, tb[ETHTOOL_A_LINKMODES_SPEED],
378 mod);
379 ethnl_update_u8(&lsettings->duplex, tb[ETHTOOL_A_LINKMODES_DUPLEX],
380 mod);
381 ethnl_update_u8(&lsettings->master_slave_cfg, master_slave_cfg, mod);
382
383 if (!tb[ETHTOOL_A_LINKMODES_OURS] && lsettings->autoneg &&
384 (req_speed || req_duplex) &&
385 ethnl_auto_linkmodes(ksettings, req_speed, req_duplex))
386 *mod = true;
387
388 return 0;
389}
390
391int ethnl_set_linkmodes(struct sk_buff *skb, struct genl_info *info)
392{
393 struct nlattr *tb[ETHTOOL_A_LINKMODES_MAX + 1];
394 struct ethtool_link_ksettings ksettings = {};
395 struct ethnl_req_info req_info = {};
396 struct net_device *dev;
397 bool mod = false;
398 int ret;
399
400 ret = nlmsg_parse(info->nlhdr, GENL_HDRLEN, tb,
401 ETHTOOL_A_LINKMODES_MAX, linkmodes_set_policy,
402 info->extack);
403 if (ret < 0)
404 return ret;
405 ret = ethnl_parse_header_dev_get(&req_info,
406 tb[ETHTOOL_A_LINKMODES_HEADER],
407 genl_info_net(info), info->extack,
408 true);
409 if (ret < 0)
410 return ret;
411 dev = req_info.dev;
412 ret = -EOPNOTSUPP;
413 if (!dev->ethtool_ops->get_link_ksettings ||
414 !dev->ethtool_ops->set_link_ksettings)
415 goto out_dev;
416
417 rtnl_lock();
418 ret = ethnl_ops_begin(dev);
419 if (ret < 0)
420 goto out_rtnl;
421
422 ret = __ethtool_get_link_ksettings(dev, &ksettings);
423 if (ret < 0) {
424 GENL_SET_ERR_MSG(info, "failed to retrieve link settings");
425 goto out_ops;
426 }
427
428 ret = ethnl_update_linkmodes(info, tb, &ksettings, &mod);
429 if (ret < 0)
430 goto out_ops;
431
432 if (mod) {
433 ret = dev->ethtool_ops->set_link_ksettings(dev, &ksettings);
434 if (ret < 0)
435 GENL_SET_ERR_MSG(info, "link settings update failed");
436 else
437 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL);
438 }
439
440out_ops:
441 ethnl_ops_complete(dev);
442out_rtnl:
443 rtnl_unlock();
444out_dev:
445 dev_put(dev);
446 return ret;
447}