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
|
// SPDX-License-Identifier: GPL-2.0-only
#include "netlink.h"
#include "common.h"
#include "bitset.h"
struct wol_req_info {
struct ethnl_req_info base;
};
struct wol_reply_data {
struct ethnl_reply_data base;
struct ethtool_wolinfo wol;
bool show_sopass;
};
#define WOL_REPDATA(__reply_base) \
container_of(__reply_base, struct wol_reply_data, base)
const struct nla_policy ethnl_wol_get_policy[] = {
[ETHTOOL_A_WOL_HEADER] =
NLA_POLICY_NESTED(ethnl_header_policy),
};
static int wol_prepare_data(const struct ethnl_req_info *req_base,
struct ethnl_reply_data *reply_base,
struct genl_info *info)
{
struct wol_reply_data *data = WOL_REPDATA(reply_base);
struct net_device *dev = reply_base->dev;
int ret;
if (!dev->ethtool_ops->get_wol)
return -EOPNOTSUPP;
ret = ethnl_ops_begin(dev);
if (ret < 0)
return ret;
dev->ethtool_ops->get_wol(dev, &data->wol);
ethnl_ops_complete(dev);
/* do not include password in notifications */
data->show_sopass = info && (data->wol.supported & WAKE_MAGICSECURE);
return 0;
}
static int wol_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 wol_reply_data *data = WOL_REPDATA(reply_base);
int len;
len = ethnl_bitset32_size(&data->wol.wolopts, &data->wol.supported,
WOL_MODE_COUNT, wol_mode_names, compact);
if (len < 0)
return len;
if (data->show_sopass)
len += nla_total_size(sizeof(data->wol.sopass));
return len;
}
static int wol_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 wol_reply_data *data = WOL_REPDATA(reply_base);
int ret;
ret = ethnl_put_bitset32(skb, ETHTOOL_A_WOL_MODES, &data->wol.wolopts,
&data->wol.supported, WOL_MODE_COUNT,
wol_mode_names, compact);
if (ret < 0)
return ret;
if (data->show_sopass &&
nla_put(skb, ETHTOOL_A_WOL_SOPASS, sizeof(data->wol.sopass),
data->wol.sopass))
return -EMSGSIZE;
return 0;
}
const struct ethnl_request_ops ethnl_wol_request_ops = {
.request_cmd = ETHTOOL_MSG_WOL_GET,
.reply_cmd = ETHTOOL_MSG_WOL_GET_REPLY,
.hdr_attr = ETHTOOL_A_WOL_HEADER,
.req_info_size = sizeof(struct wol_req_info),
.reply_data_size = sizeof(struct wol_reply_data),
.prepare_data = wol_prepare_data,
.reply_size = wol_reply_size,
.fill_reply = wol_fill_reply,
};
/* WOL_SET */
const struct nla_policy ethnl_wol_set_policy[] = {
[ETHTOOL_A_WOL_HEADER] =
NLA_POLICY_NESTED(ethnl_header_policy),
[ETHTOOL_A_WOL_MODES] = { .type = NLA_NESTED },
[ETHTOOL_A_WOL_SOPASS] = { .type = NLA_BINARY,
.len = SOPASS_MAX },
};
int ethnl_set_wol(struct sk_buff *skb, struct genl_info *info)
{
struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
struct ethnl_req_info req_info = {};
struct nlattr **tb = info->attrs;
struct net_device *dev;
bool mod = false;
int ret;
ret = ethnl_parse_header_dev_get(&req_info, tb[ETHTOOL_A_WOL_HEADER],
genl_info_net(info), info->extack,
true);
if (ret < 0)
return ret;
dev = req_info.dev;
ret = -EOPNOTSUPP;
if (!dev->ethtool_ops->get_wol || !dev->ethtool_ops->set_wol)
goto out_dev;
rtnl_lock();
ret = ethnl_ops_begin(dev);
if (ret < 0)
goto out_rtnl;
dev->ethtool_ops->get_wol(dev, &wol);
ret = ethnl_update_bitset32(&wol.wolopts, WOL_MODE_COUNT,
tb[ETHTOOL_A_WOL_MODES], wol_mode_names,
info->extack, &mod);
if (ret < 0)
goto out_ops;
if (wol.wolopts & ~wol.supported) {
NL_SET_ERR_MSG_ATTR(info->extack, tb[ETHTOOL_A_WOL_MODES],
"cannot enable unsupported WoL mode");
ret = -EINVAL;
goto out_ops;
}
if (tb[ETHTOOL_A_WOL_SOPASS]) {
if (!(wol.supported & WAKE_MAGICSECURE)) {
NL_SET_ERR_MSG_ATTR(info->extack,
tb[ETHTOOL_A_WOL_SOPASS],
"magicsecure not supported, cannot set password");
ret = -EINVAL;
goto out_ops;
}
ethnl_update_binary(wol.sopass, sizeof(wol.sopass),
tb[ETHTOOL_A_WOL_SOPASS], &mod);
}
if (!mod)
goto out_ops;
ret = dev->ethtool_ops->set_wol(dev, &wol);
if (ret)
goto out_ops;
dev->wol_enabled = !!wol.wolopts;
ethtool_notify(dev, ETHTOOL_MSG_WOL_NTF, NULL);
out_ops:
ethnl_ops_complete(dev);
out_rtnl:
rtnl_unlock();
out_dev:
dev_put(dev);
return ret;
}
|
