1 // SPDX-License-Identifier: GPL-2.0-only 1
2
3 #include "netlink.h"
4 #include "common.h"
5
6 struct pause_req_info {
7 struct ethnl_req_info base;
8 enum ethtool_mac_stats_src src;
9 };
10
11 #define PAUSE_REQINFO(__req_base) \
12 container_of(__req_base, struct pause_
13
14 struct pause_reply_data {
15 struct ethnl_reply_data base;
16 struct ethtool_pauseparam pausep
17 struct ethtool_pause_stats pauses
18 };
19
20 #define PAUSE_REPDATA(__reply_base) \
21 container_of(__reply_base, struct paus
22
23 const struct nla_policy ethnl_pause_get_policy
24 [ETHTOOL_A_PAUSE_HEADER]
25 NLA_POLICY_NESTED(ethnl_header
26 [ETHTOOL_A_PAUSE_STATS_SRC]
27 NLA_POLICY_MAX(NLA_U32, ETHTOO
28 };
29
30 static int pause_parse_request(struct ethnl_re
31 struct nlattr *
32 struct netlink_
33 {
34 enum ethtool_mac_stats_src src = ETHTO
35 struct pause_req_info *req_info = PAUS
36
37 if (tb[ETHTOOL_A_PAUSE_STATS_SRC]) {
38 if (!(req_base->flags & ETHTOO
39 NL_SET_ERR_MSG_MOD(ext
40 "ET
41 return -EINVAL;
42 }
43
44 src = nla_get_u32(tb[ETHTOOL_A
45 }
46
47 req_info->src = src;
48
49 return 0;
50 }
51
52 static int pause_prepare_data(const struct eth
53 struct ethnl_rep
54 const struct gen
55 {
56 const struct pause_req_info *req_info
57 struct pause_reply_data *data = PAUSE_
58 enum ethtool_mac_stats_src src = req_i
59 struct net_device *dev = reply_base->d
60 int ret;
61
62 if (!dev->ethtool_ops->get_pauseparam)
63 return -EOPNOTSUPP;
64
65 ethtool_stats_init((u64 *)&data->pause
66 sizeof(data->pauses
67 data->pausestat.src = src;
68
69 ret = ethnl_ops_begin(dev);
70 if (ret < 0)
71 return ret;
72
73 if ((src == ETHTOOL_MAC_STATS_SRC_EMAC
74 src == ETHTOOL_MAC_STATS_SRC_PMAC
75 !__ethtool_dev_mm_supported(dev))
76 NL_SET_ERR_MSG_MOD(info->extac
77 "Device doe
78 ethnl_ops_complete(dev);
79 return -EOPNOTSUPP;
80 }
81
82 dev->ethtool_ops->get_pauseparam(dev,
83 if (req_base->flags & ETHTOOL_FLAG_STA
84 dev->ethtool_ops->get_pause_stats)
85 dev->ethtool_ops->get_pause_st
86
87 ethnl_ops_complete(dev);
88
89 return 0;
90 }
91
92 static int pause_reply_size(const struct ethnl
93 const struct ethnl
94 {
95 int n = nla_total_size(sizeof(u8)) +
96 nla_total_size(sizeof(u8)) +
97 nla_total_size(sizeof(u8));
98
99 if (req_base->flags & ETHTOOL_FLAG_STA
100 n += nla_total_size(0) +
101 nla_total_size(sizeof(u32
102 nla_total_size_64bit(size
103 return n;
104 }
105
106 static int ethtool_put_stat(struct sk_buff *sk
107 u16 padtype)
108 {
109 if (val == ETHTOOL_STAT_NOT_SET)
110 return 0;
111 if (nla_put_u64_64bit(skb, attrtype, v
112 return -EMSGSIZE;
113
114 return 0;
115 }
116
117 static int pause_put_stats(struct sk_buff *skb
118 const struct ethtoo
119 {
120 const u16 pad = ETHTOOL_A_PAUSE_STAT_P
121 struct nlattr *nest;
122
123 if (nla_put_u32(skb, ETHTOOL_A_PAUSE_S
124 return -EMSGSIZE;
125
126 nest = nla_nest_start(skb, ETHTOOL_A_P
127 if (!nest)
128 return -EMSGSIZE;
129
130 if (ethtool_put_stat(skb, pause_stats-
131 ETHTOOL_A_PAUSE_S
132 ethtool_put_stat(skb, pause_stats-
133 ETHTOOL_A_PAUSE_S
134 goto err_cancel;
135
136 nla_nest_end(skb, nest);
137 return 0;
138
139 err_cancel:
140 nla_nest_cancel(skb, nest);
141 return -EMSGSIZE;
142 }
143
144 static int pause_fill_reply(struct sk_buff *sk
145 const struct ethnl
146 const struct ethnl
147 {
148 const struct pause_reply_data *data =
149 const struct ethtool_pauseparam *pause
150
151 if (nla_put_u8(skb, ETHTOOL_A_PAUSE_AU
152 nla_put_u8(skb, ETHTOOL_A_PAUSE_RX
153 nla_put_u8(skb, ETHTOOL_A_PAUSE_TX
154 return -EMSGSIZE;
155
156 if (req_base->flags & ETHTOOL_FLAG_STA
157 pause_put_stats(skb, &data->pauses
158 return -EMSGSIZE;
159
160 return 0;
161 }
162
163 /* PAUSE_SET */
164
165 const struct nla_policy ethnl_pause_set_policy
166 [ETHTOOL_A_PAUSE_HEADER]
167 NLA_POLICY_NESTED(ethnl_header
168 [ETHTOOL_A_PAUSE_AUTONEG]
169 [ETHTOOL_A_PAUSE_RX]
170 [ETHTOOL_A_PAUSE_TX]
171 };
172
173 static int
174 ethnl_set_pause_validate(struct ethnl_req_info
175 struct genl_info *inf
176 {
177 const struct ethtool_ops *ops = req_in
178
179 return ops->get_pauseparam && ops->set
180 }
181
182 static int
183 ethnl_set_pause(struct ethnl_req_info *req_inf
184 {
185 struct net_device *dev = req_info->dev
186 struct ethtool_pauseparam params = {};
187 struct nlattr **tb = info->attrs;
188 bool mod = false;
189 int ret;
190
191 dev->ethtool_ops->get_pauseparam(dev,
192
193 ethnl_update_bool32(¶ms.autoneg, t
194 ethnl_update_bool32(¶ms.rx_pause,
195 ethnl_update_bool32(¶ms.tx_pause,
196 if (!mod)
197 return 0;
198
199 ret = dev->ethtool_ops->set_pauseparam
200 return ret < 0 ? ret : 1;
201 }
202
203 const struct ethnl_request_ops ethnl_pause_req
204 .request_cmd = ETHTOOL_MSG_
205 .reply_cmd = ETHTOOL_MSG_
206 .hdr_attr = ETHTOOL_A_PA
207 .req_info_size = sizeof(struc
208 .reply_data_size = sizeof(struc
209
210 .parse_request = pause_parse_
211 .prepare_data = pause_prepar
212 .reply_size = pause_reply_
213 .fill_reply = pause_fill_r
214
215 .set_validate = ethnl_set_pa
216 .set = ethnl_set_pa
217 .set_ntf_cmd = ETHTOOL_MSG_
218 };
219
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