1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
|
// SPDX-License-Identifier: GPL-2.0-only
#include "netlink.h"
#include "common.h"
#include "bitset.h"
struct fec_req_info {
struct ethnl_req_info base;
};
struct fec_reply_data {
struct ethnl_reply_data base;
__ETHTOOL_DECLARE_LINK_MODE_MASK(fec_link_modes);
u32 active_fec;
u8 fec_auto;
struct fec_stat_grp {
u64 stats[1 + ETHTOOL_MAX_LANES];
u8 cnt;
} corr, uncorr, corr_bits;
};
#define FEC_REPDATA(__reply_base) \
container_of(__reply_base, struct fec_reply_data, base)
#define ETHTOOL_FEC_MASK ((ETHTOOL_FEC_LLRS << 1) - 1)
const struct nla_policy ethnl_fec_get_policy[ETHTOOL_A_FEC_HEADER + 1] = {
[ETHTOOL_A_FEC_HEADER] = NLA_POLICY_NESTED(ethnl_header_policy_stats),
};
static void
ethtool_fec_to_link_modes(u32 fec, unsigned long *link_modes, u8 *fec_auto)
{
if (fec_auto)
*fec_auto = !!(fec & ETHTOOL_FEC_AUTO);
if (fec & ETHTOOL_FEC_OFF)
__set_bit(ETHTOOL_LINK_MODE_FEC_NONE_BIT, link_modes);
if (fec & ETHTOOL_FEC_RS)
__set_bit(ETHTOOL_LINK_MODE_FEC_RS_BIT, link_modes);
if (fec & ETHTOOL_FEC_BASER)
__set_bit(ETHTOOL_LINK_MODE_FEC_BASER_BIT, link_modes);
if (fec & ETHTOOL_FEC_LLRS)
__set_bit(ETHTOOL_LINK_MODE_FEC_LLRS_BIT, link_modes);
}
static int
ethtool_link_modes_to_fecparam(struct ethtool_fecparam *fec,
unsigned long *link_modes, u8 fec_auto)
{
memset(fec, 0, sizeof(*fec));
if (fec_auto)
fec->fec |= ETHTOOL_FEC_AUTO;
if (__test_and_clear_bit(ETHTOOL_LINK_MODE_FEC_NONE_BIT, link_modes))
fec->fec |= ETHTOOL_FEC_OFF;
if (__test_and_clear_bit(ETHTOOL_LINK_MODE_FEC_RS_BIT, link_modes))
fec->fec |= ETHTOOL_FEC_RS;
if (__test_and_clear_bit(ETHTOOL_LINK_MODE_FEC_BASER_BIT, link_modes))
fec->fec |= ETHTOOL_FEC_BASER;
if (__test_and_clear_bit(ETHTOOL_LINK_MODE_FEC_LLRS_BIT, link_modes))
fec->fec |= ETHTOOL_FEC_LLRS;
if (!bitmap_empty(link_modes, __ETHTOOL_LINK_MODE_MASK_NBITS))
return -EINVAL;
return 0;
}
static void
fec_stats_recalc(struct fec_stat_grp *grp, struct ethtool_fec_stat *stats)
{
int i;
if (stats->lanes[0] == ETHTOOL_STAT_NOT_SET) {
grp->stats[0] = stats->total;
grp->cnt = stats->total != ETHTOOL_STAT_NOT_SET;
return;
}
grp->cnt = 1;
grp->stats[0] = 0;
for (i = 0; i < ETHTOOL_MAX_LANES; i++) {
if (stats->lanes[i] == ETHTOOL_STAT_NOT_SET)
break;
grp->stats[0] += stats->lanes[i];
grp->stats[grp->cnt++] = stats->lanes[i];
}
}
static int fec_prepare_data(const struct ethnl_req_info *req_base,
struct ethnl_reply_data *reply_base,
struct genl_info *info)
{
__ETHTOOL_DECLARE_LINK_MODE_MASK(active_fec_modes) = {};
struct fec_reply_data *data = FEC_REPDATA(reply_base);
struct net_device *dev = reply_base->dev;
struct ethtool_fecparam fec = {};
int ret;
if (!dev->ethtool_ops->get_fecparam)
return -EOPNOTSUPP;
ret = ethnl_ops_begin(dev);
if (ret < 0)
return ret;
ret = dev->ethtool_ops->get_fecparam(dev, &fec);
if (ret)
goto out_complete;
if (req_base->flags & ETHTOOL_FLAG_STATS &&
dev->ethtool_ops->get_fec_stats) {
struct ethtool_fec_stats stats;
ethtool_stats_init((u64 *)&stats, sizeof(stats) / 8);
dev->ethtool_ops->get_fec_stats(dev, &stats);
fec_stats_recalc(&data->corr, &stats.corrected_blocks);
fec_stats_recalc(&data->uncorr, &stats.uncorrectable_blocks);
fec_stats_recalc(&data->corr_bits, &stats.corrected_bits);
}
WARN_ON_ONCE(fec.reserved);
ethtool_fec_to_link_modes(fec.fec, data->fec_link_modes,
&data->fec_auto);
ethtool_fec_to_link_modes(fec.active_fec, active_fec_modes, NULL);
data->active_fec = find_first_bit(active_fec_modes,
__ETHTOOL_LINK_MODE_MASK_NBITS);
/* Don't report attr if no FEC mode set. Note that
* ethtool_fecparam_to_link_modes() ignores NONE and AUTO.
*/
if (data->active_fec == __ETHTOOL_LINK_MODE_MASK_NBITS)
data->active_fec = 0;
out_complete:
ethnl_ops_complete(dev);
return ret;
}
static int fec_reply_size(const struct ethnl_req_info *req_base,
const struct ethnl_reply_data *reply_base)
{
bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
const struct fec_reply_data *data = FEC_REPDATA(reply_base);
int len = 0;
int ret;
ret = ethnl_bitset_size(data->fec_link_modes, NULL,
__ETHTOOL_LINK_MODE_MASK_NBITS,
link_mode_names, compact);
if (ret < 0)
return ret;
len += ret;
len += nla_total_size(sizeof(u8)) + /* _FEC_AUTO */
nla_total_size(sizeof(u32)); /* _FEC_ACTIVE */
if (req_base->flags & ETHTOOL_FLAG_STATS)
len += 3 * nla_total_size_64bit(sizeof(u64) *
(1 + ETHTOOL_MAX_LANES));
return len;
}
static int fec_put_stats(struct sk_buff *skb, const struct fec_reply_data *data)
{
struct nlattr *nest;
nest = nla_nest_start(skb, ETHTOOL_A_FEC_STATS);
if (!nest)
return -EMSGSIZE;
if (nla_put_64bit(skb, ETHTOOL_A_FEC_STAT_CORRECTED,
sizeof(u64) * data->corr.cnt,
data->corr.stats, ETHTOOL_A_FEC_STAT_PAD) ||
nla_put_64bit(skb, ETHTOOL_A_FEC_STAT_UNCORR,
sizeof(u64) * data->uncorr.cnt,
data->uncorr.stats, ETHTOOL_A_FEC_STAT_PAD) ||
nla_put_64bit(skb, ETHTOOL_A_FEC_STAT_CORR_BITS,
sizeof(u64) * data->corr_bits.cnt,
data->corr_bits.stats, ETHTOOL_A_FEC_STAT_PAD))
goto err_cancel;
nla_nest_end(skb, nest);
return 0;
err_cancel:
nla_nest_cancel(skb, nest);
return -EMSGSIZE;
}
static int fec_fill_reply(struct sk_buff *skb,
const struct ethnl_req_info *req_base,
const struct ethnl_reply_data *reply_base)
{
bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
const struct fec_reply_data *data = FEC_REPDATA(reply_base);
int ret;
ret = ethnl_put_bitset(skb, ETHTOOL_A_FEC_MODES,
data->fec_link_modes, NULL,
__ETHTOOL_LINK_MODE_MASK_NBITS,
link_mode_names, compact);
if (ret < 0)
return ret;
if (nla_put_u8(skb, ETHTOOL_A_FEC_AUTO, data->fec_auto) ||
(data->active_fec &&
nla_put_u32(skb, ETHTOOL_A_FEC_ACTIVE, data->active_fec)))
return -EMSGSIZE;
if (req_base->flags & ETHTOOL_FLAG_STATS && fec_put_stats(skb, data))
return -EMSGSIZE;
return 0;
}
/* FEC_SET */
const struct nla_policy ethnl_fec_set_policy[ETHTOOL_A_FEC_AUTO + 1] = {
[ETHTOOL_A_FEC_HEADER] = NLA_POLICY_NESTED(ethnl_header_policy),
[ETHTOOL_A_FEC_MODES] = { .type = NLA_NESTED },
[ETHTOOL_A_FEC_AUTO] = NLA_POLICY_MAX(NLA_U8, 1),
};
static int
ethnl_set_fec_validate(struct ethnl_req_info *req_info, struct genl_info *info)
{
const struct ethtool_ops *ops = req_info->dev->ethtool_ops;
return ops->get_fecparam && ops->set_fecparam ? 1 : -EOPNOTSUPP;
}
static int
ethnl_set_fec(struct ethnl_req_info *req_info, struct genl_info *info)
{
__ETHTOOL_DECLARE_LINK_MODE_MASK(fec_link_modes) = {};
struct net_device *dev = req_info->dev;
struct nlattr **tb = info->attrs;
struct ethtool_fecparam fec = {};
bool mod = false;
u8 fec_auto;
int ret;
ret = dev->ethtool_ops->get_fecparam(dev, &fec);
if (ret < 0)
return ret;
ethtool_fec_to_link_modes(fec.fec, fec_link_modes, &fec_auto);
ret = ethnl_update_bitset(fec_link_modes,
__ETHTOOL_LINK_MODE_MASK_NBITS,
tb[ETHTOOL_A_FEC_MODES],
link_mode_names, info->extack, &mod);
if (ret < 0)
return ret;
ethnl_update_u8(&fec_auto, tb[ETHTOOL_A_FEC_AUTO], &mod);
if (!mod)
return 0;
ret = ethtool_link_modes_to_fecparam(&fec, fec_link_modes, fec_auto);
if (ret) {
NL_SET_ERR_MSG_ATTR(info->extack, tb[ETHTOOL_A_FEC_MODES],
"invalid FEC modes requested");
return ret;
}
if (!fec.fec) {
NL_SET_ERR_MSG_ATTR(info->extack, tb[ETHTOOL_A_FEC_MODES],
"no FEC modes set");
return -EINVAL;
}
ret = dev->ethtool_ops->set_fecparam(dev, &fec);
return ret < 0 ? ret : 1;
}
const struct ethnl_request_ops ethnl_fec_request_ops = {
.request_cmd = ETHTOOL_MSG_FEC_GET,
.reply_cmd = ETHTOOL_MSG_FEC_GET_REPLY,
.hdr_attr = ETHTOOL_A_FEC_HEADER,
.req_info_size = sizeof(struct fec_req_info),
.reply_data_size = sizeof(struct fec_reply_data),
.prepare_data = fec_prepare_data,
.reply_size = fec_reply_size,
.fill_reply = fec_fill_reply,
.set_validate = ethnl_set_fec_validate,
.set = ethnl_set_fec,
.set_ntf_cmd = ETHTOOL_MSG_FEC_NTF,
};
|
