1 // SPDX-License-Identifier: GPL-2.0-only
7 struct linkmodes_req_info {
8 struct ethnl_req_info base;
11 struct linkmodes_reply_data {
12 struct ethnl_reply_data base;
13 struct ethtool_link_ksettings ksettings;
14 struct ethtool_link_settings *lsettings;
18 #define LINKMODES_REPDATA(__reply_base) \
19 container_of(__reply_base, struct linkmodes_reply_data, base)
21 static const struct nla_policy
22 linkmodes_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 },
32 static int linkmodes_prepare_data(const struct ethnl_req_info *req_base,
33 struct ethnl_reply_data *reply_base,
34 struct genl_info *info)
36 struct linkmodes_reply_data *data = LINKMODES_REPDATA(reply_base);
37 struct net_device *dev = reply_base->dev;
40 data->lsettings = &data->ksettings.base;
42 ret = ethnl_ops_begin(dev);
46 ret = __ethtool_get_link_ksettings(dev, &data->ksettings);
47 if (ret < 0 && info) {
48 GENL_SET_ERR_MSG(info, "failed to retrieve link settings");
53 bitmap_empty(data->ksettings.link_modes.lp_advertising,
54 __ETHTOOL_LINK_MODE_MASK_NBITS);
57 ethnl_ops_complete(dev);
61 static int linkmodes_reply_size(const struct ethnl_req_info *req_base,
62 const struct ethnl_reply_data *reply_base)
64 const struct linkmodes_reply_data *data = LINKMODES_REPDATA(reply_base);
65 const struct ethtool_link_ksettings *ksettings = &data->ksettings;
66 bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
69 len = nla_total_size(sizeof(u8)) /* LINKMODES_AUTONEG */
70 + nla_total_size(sizeof(u32)) /* LINKMODES_SPEED */
71 + nla_total_size(sizeof(u8)) /* LINKMODES_DUPLEX */
73 ret = ethnl_bitset_size(ksettings->link_modes.advertising,
74 ksettings->link_modes.supported,
75 __ETHTOOL_LINK_MODE_MASK_NBITS,
76 link_mode_names, compact);
80 if (!data->peer_empty) {
81 ret = ethnl_bitset_size(ksettings->link_modes.lp_advertising,
82 NULL, __ETHTOOL_LINK_MODE_MASK_NBITS,
83 link_mode_names, compact);
92 static int linkmodes_fill_reply(struct sk_buff *skb,
93 const struct ethnl_req_info *req_base,
94 const struct ethnl_reply_data *reply_base)
96 const struct linkmodes_reply_data *data = LINKMODES_REPDATA(reply_base);
97 const struct ethtool_link_ksettings *ksettings = &data->ksettings;
98 const struct ethtool_link_settings *lsettings = &ksettings->base;
99 bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
102 if (nla_put_u8(skb, ETHTOOL_A_LINKMODES_AUTONEG, lsettings->autoneg))
105 ret = ethnl_put_bitset(skb, ETHTOOL_A_LINKMODES_OURS,
106 ksettings->link_modes.advertising,
107 ksettings->link_modes.supported,
108 __ETHTOOL_LINK_MODE_MASK_NBITS, link_mode_names,
112 if (!data->peer_empty) {
113 ret = ethnl_put_bitset(skb, ETHTOOL_A_LINKMODES_PEER,
114 ksettings->link_modes.lp_advertising,
115 NULL, __ETHTOOL_LINK_MODE_MASK_NBITS,
116 link_mode_names, compact);
121 if (nla_put_u32(skb, ETHTOOL_A_LINKMODES_SPEED, lsettings->speed) ||
122 nla_put_u8(skb, ETHTOOL_A_LINKMODES_DUPLEX, lsettings->duplex))
128 const struct ethnl_request_ops ethnl_linkmodes_request_ops = {
129 .request_cmd = ETHTOOL_MSG_LINKMODES_GET,
130 .reply_cmd = ETHTOOL_MSG_LINKMODES_GET_REPLY,
131 .hdr_attr = ETHTOOL_A_LINKMODES_HEADER,
132 .max_attr = ETHTOOL_A_LINKMODES_MAX,
133 .req_info_size = sizeof(struct linkmodes_req_info),
134 .reply_data_size = sizeof(struct linkmodes_reply_data),
135 .request_policy = linkmodes_get_policy,
137 .prepare_data = linkmodes_prepare_data,
138 .reply_size = linkmodes_reply_size,
139 .fill_reply = linkmodes_fill_reply,
144 struct link_mode_info {
149 #define __DEFINE_LINK_MODE_PARAMS(_speed, _type, _duplex) \
150 [ETHTOOL_LINK_MODE(_speed, _type, _duplex)] = { \
151 .speed = SPEED_ ## _speed, \
152 .duplex = __DUPLEX_ ## _duplex \
154 #define __DUPLEX_Half DUPLEX_HALF
155 #define __DUPLEX_Full DUPLEX_FULL
156 #define __DEFINE_SPECIAL_MODE_PARAMS(_mode) \
157 [ETHTOOL_LINK_MODE_ ## _mode ## _BIT] = { \
158 .speed = SPEED_UNKNOWN, \
159 .duplex = DUPLEX_UNKNOWN, \
162 static const struct link_mode_info link_mode_params[] = {
163 __DEFINE_LINK_MODE_PARAMS(10, T, Half),
164 __DEFINE_LINK_MODE_PARAMS(10, T, Full),
165 __DEFINE_LINK_MODE_PARAMS(100, T, Half),
166 __DEFINE_LINK_MODE_PARAMS(100, T, Full),
167 __DEFINE_LINK_MODE_PARAMS(1000, T, Half),
168 __DEFINE_LINK_MODE_PARAMS(1000, T, Full),
169 __DEFINE_SPECIAL_MODE_PARAMS(Autoneg),
170 __DEFINE_SPECIAL_MODE_PARAMS(TP),
171 __DEFINE_SPECIAL_MODE_PARAMS(AUI),
172 __DEFINE_SPECIAL_MODE_PARAMS(MII),
173 __DEFINE_SPECIAL_MODE_PARAMS(FIBRE),
174 __DEFINE_SPECIAL_MODE_PARAMS(BNC),
175 __DEFINE_LINK_MODE_PARAMS(10000, T, Full),
176 __DEFINE_SPECIAL_MODE_PARAMS(Pause),
177 __DEFINE_SPECIAL_MODE_PARAMS(Asym_Pause),
178 __DEFINE_LINK_MODE_PARAMS(2500, X, Full),
179 __DEFINE_SPECIAL_MODE_PARAMS(Backplane),
180 __DEFINE_LINK_MODE_PARAMS(1000, KX, Full),
181 __DEFINE_LINK_MODE_PARAMS(10000, KX4, Full),
182 __DEFINE_LINK_MODE_PARAMS(10000, KR, Full),
183 [ETHTOOL_LINK_MODE_10000baseR_FEC_BIT] = {
184 .speed = SPEED_10000,
185 .duplex = DUPLEX_FULL,
187 __DEFINE_LINK_MODE_PARAMS(20000, MLD2, Full),
188 __DEFINE_LINK_MODE_PARAMS(20000, KR2, Full),
189 __DEFINE_LINK_MODE_PARAMS(40000, KR4, Full),
190 __DEFINE_LINK_MODE_PARAMS(40000, CR4, Full),
191 __DEFINE_LINK_MODE_PARAMS(40000, SR4, Full),
192 __DEFINE_LINK_MODE_PARAMS(40000, LR4, Full),
193 __DEFINE_LINK_MODE_PARAMS(56000, KR4, Full),
194 __DEFINE_LINK_MODE_PARAMS(56000, CR4, Full),
195 __DEFINE_LINK_MODE_PARAMS(56000, SR4, Full),
196 __DEFINE_LINK_MODE_PARAMS(56000, LR4, Full),
197 __DEFINE_LINK_MODE_PARAMS(25000, CR, Full),
198 __DEFINE_LINK_MODE_PARAMS(25000, KR, Full),
199 __DEFINE_LINK_MODE_PARAMS(25000, SR, Full),
200 __DEFINE_LINK_MODE_PARAMS(50000, CR2, Full),
201 __DEFINE_LINK_MODE_PARAMS(50000, KR2, Full),
202 __DEFINE_LINK_MODE_PARAMS(100000, KR4, Full),
203 __DEFINE_LINK_MODE_PARAMS(100000, SR4, Full),
204 __DEFINE_LINK_MODE_PARAMS(100000, CR4, Full),
205 __DEFINE_LINK_MODE_PARAMS(100000, LR4_ER4, Full),
206 __DEFINE_LINK_MODE_PARAMS(50000, SR2, Full),
207 __DEFINE_LINK_MODE_PARAMS(1000, X, Full),
208 __DEFINE_LINK_MODE_PARAMS(10000, CR, Full),
209 __DEFINE_LINK_MODE_PARAMS(10000, SR, Full),
210 __DEFINE_LINK_MODE_PARAMS(10000, LR, Full),
211 __DEFINE_LINK_MODE_PARAMS(10000, LRM, Full),
212 __DEFINE_LINK_MODE_PARAMS(10000, ER, Full),
213 __DEFINE_LINK_MODE_PARAMS(2500, T, Full),
214 __DEFINE_LINK_MODE_PARAMS(5000, T, Full),
215 __DEFINE_SPECIAL_MODE_PARAMS(FEC_NONE),
216 __DEFINE_SPECIAL_MODE_PARAMS(FEC_RS),
217 __DEFINE_SPECIAL_MODE_PARAMS(FEC_BASER),
218 __DEFINE_LINK_MODE_PARAMS(50000, KR, Full),
219 __DEFINE_LINK_MODE_PARAMS(50000, SR, Full),
220 __DEFINE_LINK_MODE_PARAMS(50000, CR, Full),
221 __DEFINE_LINK_MODE_PARAMS(50000, LR_ER_FR, Full),
222 __DEFINE_LINK_MODE_PARAMS(50000, DR, Full),
223 __DEFINE_LINK_MODE_PARAMS(100000, KR2, Full),
224 __DEFINE_LINK_MODE_PARAMS(100000, SR2, Full),
225 __DEFINE_LINK_MODE_PARAMS(100000, CR2, Full),
226 __DEFINE_LINK_MODE_PARAMS(100000, LR2_ER2_FR2, Full),
227 __DEFINE_LINK_MODE_PARAMS(100000, DR2, Full),
228 __DEFINE_LINK_MODE_PARAMS(200000, KR4, Full),
229 __DEFINE_LINK_MODE_PARAMS(200000, SR4, Full),
230 __DEFINE_LINK_MODE_PARAMS(200000, LR4_ER4_FR4, Full),
231 __DEFINE_LINK_MODE_PARAMS(200000, DR4, Full),
232 __DEFINE_LINK_MODE_PARAMS(200000, CR4, Full),
233 __DEFINE_LINK_MODE_PARAMS(100, T1, Full),
234 __DEFINE_LINK_MODE_PARAMS(1000, T1, Full),
235 __DEFINE_LINK_MODE_PARAMS(400000, KR8, Full),
236 __DEFINE_LINK_MODE_PARAMS(400000, SR8, Full),
237 __DEFINE_LINK_MODE_PARAMS(400000, LR8_ER8_FR8, Full),
238 __DEFINE_LINK_MODE_PARAMS(400000, DR8, Full),
239 __DEFINE_LINK_MODE_PARAMS(400000, CR8, Full),
242 static const struct nla_policy
243 linkmodes_set_policy[ETHTOOL_A_LINKMODES_MAX + 1] = {
244 [ETHTOOL_A_LINKMODES_UNSPEC] = { .type = NLA_REJECT },
245 [ETHTOOL_A_LINKMODES_HEADER] = { .type = NLA_NESTED },
246 [ETHTOOL_A_LINKMODES_AUTONEG] = { .type = NLA_U8 },
247 [ETHTOOL_A_LINKMODES_OURS] = { .type = NLA_NESTED },
248 [ETHTOOL_A_LINKMODES_PEER] = { .type = NLA_REJECT },
249 [ETHTOOL_A_LINKMODES_SPEED] = { .type = NLA_U32 },
250 [ETHTOOL_A_LINKMODES_DUPLEX] = { .type = NLA_U8 },
253 /* Set advertised link modes to all supported modes matching requested speed
254 * and duplex values. Called when autonegotiation is on, speed or duplex is
255 * requested but no link mode change. This is done in userspace with ioctl()
256 * interface, move it into kernel for netlink.
257 * Returns true if advertised modes bitmap was modified.
259 static bool ethnl_auto_linkmodes(struct ethtool_link_ksettings *ksettings,
260 bool req_speed, bool req_duplex)
262 unsigned long *advertising = ksettings->link_modes.advertising;
263 unsigned long *supported = ksettings->link_modes.supported;
264 DECLARE_BITMAP(old_adv, __ETHTOOL_LINK_MODE_MASK_NBITS);
267 BUILD_BUG_ON(ARRAY_SIZE(link_mode_params) !=
268 __ETHTOOL_LINK_MODE_MASK_NBITS);
270 bitmap_copy(old_adv, advertising, __ETHTOOL_LINK_MODE_MASK_NBITS);
272 for (i = 0; i < __ETHTOOL_LINK_MODE_MASK_NBITS; i++) {
273 const struct link_mode_info *info = &link_mode_params[i];
275 if (info->speed == SPEED_UNKNOWN)
277 if (test_bit(i, supported) &&
278 (!req_speed || info->speed == ksettings->base.speed) &&
279 (!req_duplex || info->duplex == ksettings->base.duplex))
280 set_bit(i, advertising);
282 clear_bit(i, advertising);
285 return !bitmap_equal(old_adv, advertising,
286 __ETHTOOL_LINK_MODE_MASK_NBITS);
289 static int ethnl_update_linkmodes(struct genl_info *info, struct nlattr **tb,
290 struct ethtool_link_ksettings *ksettings,
293 struct ethtool_link_settings *lsettings = &ksettings->base;
294 bool req_speed, req_duplex;
298 req_speed = tb[ETHTOOL_A_LINKMODES_SPEED];
299 req_duplex = tb[ETHTOOL_A_LINKMODES_DUPLEX];
301 ethnl_update_u8(&lsettings->autoneg, tb[ETHTOOL_A_LINKMODES_AUTONEG],
303 ret = ethnl_update_bitset(ksettings->link_modes.advertising,
304 __ETHTOOL_LINK_MODE_MASK_NBITS,
305 tb[ETHTOOL_A_LINKMODES_OURS], link_mode_names,
309 ethnl_update_u32(&lsettings->speed, tb[ETHTOOL_A_LINKMODES_SPEED],
311 ethnl_update_u8(&lsettings->duplex, tb[ETHTOOL_A_LINKMODES_DUPLEX],
314 if (!tb[ETHTOOL_A_LINKMODES_OURS] && lsettings->autoneg &&
315 (req_speed || req_duplex) &&
316 ethnl_auto_linkmodes(ksettings, req_speed, req_duplex))
322 int ethnl_set_linkmodes(struct sk_buff *skb, struct genl_info *info)
324 struct nlattr *tb[ETHTOOL_A_LINKMODES_MAX + 1];
325 struct ethtool_link_ksettings ksettings = {};
326 struct ethnl_req_info req_info = {};
327 struct net_device *dev;
331 ret = nlmsg_parse(info->nlhdr, GENL_HDRLEN, tb,
332 ETHTOOL_A_LINKMODES_MAX, linkmodes_set_policy,
336 ret = ethnl_parse_header(&req_info, tb[ETHTOOL_A_LINKMODES_HEADER],
337 genl_info_net(info), info->extack, true);
341 if (!dev->ethtool_ops->get_link_ksettings ||
342 !dev->ethtool_ops->set_link_ksettings)
346 ret = ethnl_ops_begin(dev);
350 ret = __ethtool_get_link_ksettings(dev, &ksettings);
353 GENL_SET_ERR_MSG(info, "failed to retrieve link settings");
357 ret = ethnl_update_linkmodes(info, tb, &ksettings, &mod);
362 ret = dev->ethtool_ops->set_link_ksettings(dev, &ksettings);
364 GENL_SET_ERR_MSG(info, "link settings update failed");
366 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL);
370 ethnl_ops_complete(dev);