1 // SPDX-License-Identifier: GPL-2.0-only 1 // SPDX-License-Identifier: GPL-2.0-only
2 2
3 #include "netlink.h" 3 #include "netlink.h"
4 #include "common.h" 4 #include "common.h"
5 5
6 struct pause_req_info { 6 struct pause_req_info {
7 struct ethnl_req_info base; 7 struct ethnl_req_info base;
8 enum ethtool_mac_stats_src src; <<
9 }; 8 };
10 9
11 #define PAUSE_REQINFO(__req_base) \ <<
12 container_of(__req_base, struct pause_ <<
13 <<
14 struct pause_reply_data { 10 struct pause_reply_data {
15 struct ethnl_reply_data base; 11 struct ethnl_reply_data base;
16 struct ethtool_pauseparam pausep 12 struct ethtool_pauseparam pauseparam;
17 struct ethtool_pause_stats pauses 13 struct ethtool_pause_stats pausestat;
18 }; 14 };
19 15
20 #define PAUSE_REPDATA(__reply_base) \ 16 #define PAUSE_REPDATA(__reply_base) \
21 container_of(__reply_base, struct paus 17 container_of(__reply_base, struct pause_reply_data, base)
22 18
23 const struct nla_policy ethnl_pause_get_policy 19 const struct nla_policy ethnl_pause_get_policy[] = {
24 [ETHTOOL_A_PAUSE_HEADER] 20 [ETHTOOL_A_PAUSE_HEADER] =
25 NLA_POLICY_NESTED(ethnl_header 21 NLA_POLICY_NESTED(ethnl_header_policy_stats),
26 [ETHTOOL_A_PAUSE_STATS_SRC] <<
27 NLA_POLICY_MAX(NLA_U32, ETHTOO <<
28 }; 22 };
29 23
30 static int pause_parse_request(struct ethnl_re !! 24 static void ethtool_stats_init(u64 *stats, unsigned int n)
31 struct nlattr * !! 25 {
32 struct netlink_ !! 26 while (n--)
33 { !! 27 stats[n] = ETHTOOL_STAT_NOT_SET;
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 } 28 }
51 29
52 static int pause_prepare_data(const struct eth 30 static int pause_prepare_data(const struct ethnl_req_info *req_base,
53 struct ethnl_rep 31 struct ethnl_reply_data *reply_base,
54 const struct gen !! 32 struct genl_info *info)
55 { 33 {
56 const struct pause_req_info *req_info <<
57 struct pause_reply_data *data = PAUSE_ 34 struct pause_reply_data *data = PAUSE_REPDATA(reply_base);
58 enum ethtool_mac_stats_src src = req_i <<
59 struct net_device *dev = reply_base->d 35 struct net_device *dev = reply_base->dev;
60 int ret; 36 int ret;
61 37
62 if (!dev->ethtool_ops->get_pauseparam) 38 if (!dev->ethtool_ops->get_pauseparam)
63 return -EOPNOTSUPP; 39 return -EOPNOTSUPP;
64 40
65 ethtool_stats_init((u64 *)&data->pause 41 ethtool_stats_init((u64 *)&data->pausestat,
66 sizeof(data->pauses 42 sizeof(data->pausestat) / 8);
67 data->pausestat.src = src; <<
68 43
69 ret = ethnl_ops_begin(dev); 44 ret = ethnl_ops_begin(dev);
70 if (ret < 0) 45 if (ret < 0)
71 return ret; 46 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, 47 dev->ethtool_ops->get_pauseparam(dev, &data->pauseparam);
83 if (req_base->flags & ETHTOOL_FLAG_STA 48 if (req_base->flags & ETHTOOL_FLAG_STATS &&
84 dev->ethtool_ops->get_pause_stats) 49 dev->ethtool_ops->get_pause_stats)
85 dev->ethtool_ops->get_pause_st 50 dev->ethtool_ops->get_pause_stats(dev, &data->pausestat);
86 <<
87 ethnl_ops_complete(dev); 51 ethnl_ops_complete(dev);
88 52
89 return 0; 53 return 0;
90 } 54 }
91 55
92 static int pause_reply_size(const struct ethnl 56 static int pause_reply_size(const struct ethnl_req_info *req_base,
93 const struct ethnl 57 const struct ethnl_reply_data *reply_base)
94 { 58 {
95 int n = nla_total_size(sizeof(u8)) + 59 int n = nla_total_size(sizeof(u8)) + /* _PAUSE_AUTONEG */
96 nla_total_size(sizeof(u8)) + 60 nla_total_size(sizeof(u8)) + /* _PAUSE_RX */
97 nla_total_size(sizeof(u8)); 61 nla_total_size(sizeof(u8)); /* _PAUSE_TX */
98 62
99 if (req_base->flags & ETHTOOL_FLAG_STA 63 if (req_base->flags & ETHTOOL_FLAG_STATS)
100 n += nla_total_size(0) + 64 n += nla_total_size(0) + /* _PAUSE_STATS */
101 nla_total_size(sizeof(u32 <<
102 nla_total_size_64bit(size 65 nla_total_size_64bit(sizeof(u64)) * ETHTOOL_PAUSE_STAT_CNT;
103 return n; 66 return n;
104 } 67 }
105 68
106 static int ethtool_put_stat(struct sk_buff *sk 69 static int ethtool_put_stat(struct sk_buff *skb, u64 val, u16 attrtype,
107 u16 padtype) 70 u16 padtype)
108 { 71 {
109 if (val == ETHTOOL_STAT_NOT_SET) 72 if (val == ETHTOOL_STAT_NOT_SET)
110 return 0; 73 return 0;
111 if (nla_put_u64_64bit(skb, attrtype, v 74 if (nla_put_u64_64bit(skb, attrtype, val, padtype))
112 return -EMSGSIZE; 75 return -EMSGSIZE;
113 76
114 return 0; 77 return 0;
115 } 78 }
116 79
117 static int pause_put_stats(struct sk_buff *skb 80 static int pause_put_stats(struct sk_buff *skb,
118 const struct ethtoo 81 const struct ethtool_pause_stats *pause_stats)
119 { 82 {
120 const u16 pad = ETHTOOL_A_PAUSE_STAT_P 83 const u16 pad = ETHTOOL_A_PAUSE_STAT_PAD;
121 struct nlattr *nest; 84 struct nlattr *nest;
122 85
123 if (nla_put_u32(skb, ETHTOOL_A_PAUSE_S <<
124 return -EMSGSIZE; <<
125 <<
126 nest = nla_nest_start(skb, ETHTOOL_A_P 86 nest = nla_nest_start(skb, ETHTOOL_A_PAUSE_STATS);
127 if (!nest) 87 if (!nest)
128 return -EMSGSIZE; 88 return -EMSGSIZE;
129 89
130 if (ethtool_put_stat(skb, pause_stats- 90 if (ethtool_put_stat(skb, pause_stats->tx_pause_frames,
131 ETHTOOL_A_PAUSE_S 91 ETHTOOL_A_PAUSE_STAT_TX_FRAMES, pad) ||
132 ethtool_put_stat(skb, pause_stats- 92 ethtool_put_stat(skb, pause_stats->rx_pause_frames,
133 ETHTOOL_A_PAUSE_S 93 ETHTOOL_A_PAUSE_STAT_RX_FRAMES, pad))
134 goto err_cancel; 94 goto err_cancel;
135 95
136 nla_nest_end(skb, nest); 96 nla_nest_end(skb, nest);
137 return 0; 97 return 0;
138 98
139 err_cancel: 99 err_cancel:
140 nla_nest_cancel(skb, nest); 100 nla_nest_cancel(skb, nest);
141 return -EMSGSIZE; 101 return -EMSGSIZE;
142 } 102 }
143 103
144 static int pause_fill_reply(struct sk_buff *sk 104 static int pause_fill_reply(struct sk_buff *skb,
145 const struct ethnl 105 const struct ethnl_req_info *req_base,
146 const struct ethnl 106 const struct ethnl_reply_data *reply_base)
147 { 107 {
148 const struct pause_reply_data *data = 108 const struct pause_reply_data *data = PAUSE_REPDATA(reply_base);
149 const struct ethtool_pauseparam *pause 109 const struct ethtool_pauseparam *pauseparam = &data->pauseparam;
150 110
151 if (nla_put_u8(skb, ETHTOOL_A_PAUSE_AU 111 if (nla_put_u8(skb, ETHTOOL_A_PAUSE_AUTONEG, !!pauseparam->autoneg) ||
152 nla_put_u8(skb, ETHTOOL_A_PAUSE_RX 112 nla_put_u8(skb, ETHTOOL_A_PAUSE_RX, !!pauseparam->rx_pause) ||
153 nla_put_u8(skb, ETHTOOL_A_PAUSE_TX 113 nla_put_u8(skb, ETHTOOL_A_PAUSE_TX, !!pauseparam->tx_pause))
154 return -EMSGSIZE; 114 return -EMSGSIZE;
155 115
156 if (req_base->flags & ETHTOOL_FLAG_STA 116 if (req_base->flags & ETHTOOL_FLAG_STATS &&
157 pause_put_stats(skb, &data->pauses 117 pause_put_stats(skb, &data->pausestat))
158 return -EMSGSIZE; 118 return -EMSGSIZE;
159 119
160 return 0; 120 return 0;
161 } 121 }
162 122
>> 123 const struct ethnl_request_ops ethnl_pause_request_ops = {
>> 124 .request_cmd = ETHTOOL_MSG_PAUSE_GET,
>> 125 .reply_cmd = ETHTOOL_MSG_PAUSE_GET_REPLY,
>> 126 .hdr_attr = ETHTOOL_A_PAUSE_HEADER,
>> 127 .req_info_size = sizeof(struct pause_req_info),
>> 128 .reply_data_size = sizeof(struct pause_reply_data),
>> 129
>> 130 .prepare_data = pause_prepare_data,
>> 131 .reply_size = pause_reply_size,
>> 132 .fill_reply = pause_fill_reply,
>> 133 };
>> 134
163 /* PAUSE_SET */ 135 /* PAUSE_SET */
164 136
165 const struct nla_policy ethnl_pause_set_policy 137 const struct nla_policy ethnl_pause_set_policy[] = {
166 [ETHTOOL_A_PAUSE_HEADER] 138 [ETHTOOL_A_PAUSE_HEADER] =
167 NLA_POLICY_NESTED(ethnl_header 139 NLA_POLICY_NESTED(ethnl_header_policy),
168 [ETHTOOL_A_PAUSE_AUTONEG] 140 [ETHTOOL_A_PAUSE_AUTONEG] = { .type = NLA_U8 },
169 [ETHTOOL_A_PAUSE_RX] 141 [ETHTOOL_A_PAUSE_RX] = { .type = NLA_U8 },
170 [ETHTOOL_A_PAUSE_TX] 142 [ETHTOOL_A_PAUSE_TX] = { .type = NLA_U8 },
171 }; 143 };
172 144
173 static int !! 145 int ethnl_set_pause(struct sk_buff *skb, struct genl_info *info)
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 { 146 {
185 struct net_device *dev = req_info->dev <<
186 struct ethtool_pauseparam params = {}; 147 struct ethtool_pauseparam params = {};
>> 148 struct ethnl_req_info req_info = {};
187 struct nlattr **tb = info->attrs; 149 struct nlattr **tb = info->attrs;
>> 150 const struct ethtool_ops *ops;
>> 151 struct net_device *dev;
188 bool mod = false; 152 bool mod = false;
189 int ret; 153 int ret;
190 154
191 dev->ethtool_ops->get_pauseparam(dev, !! 155 ret = ethnl_parse_header_dev_get(&req_info,
>> 156 tb[ETHTOOL_A_PAUSE_HEADER],
>> 157 genl_info_net(info), info->extack,
>> 158 true);
>> 159 if (ret < 0)
>> 160 return ret;
>> 161 dev = req_info.dev;
>> 162 ops = dev->ethtool_ops;
>> 163 ret = -EOPNOTSUPP;
>> 164 if (!ops->get_pauseparam || !ops->set_pauseparam)
>> 165 goto out_dev;
>> 166
>> 167 rtnl_lock();
>> 168 ret = ethnl_ops_begin(dev);
>> 169 if (ret < 0)
>> 170 goto out_rtnl;
>> 171 ops->get_pauseparam(dev, ¶ms);
192 172
193 ethnl_update_bool32(¶ms.autoneg, t 173 ethnl_update_bool32(¶ms.autoneg, tb[ETHTOOL_A_PAUSE_AUTONEG], &mod);
194 ethnl_update_bool32(¶ms.rx_pause, 174 ethnl_update_bool32(¶ms.rx_pause, tb[ETHTOOL_A_PAUSE_RX], &mod);
195 ethnl_update_bool32(¶ms.tx_pause, 175 ethnl_update_bool32(¶ms.tx_pause, tb[ETHTOOL_A_PAUSE_TX], &mod);
>> 176 ret = 0;
196 if (!mod) 177 if (!mod)
197 return 0; !! 178 goto out_ops;
198 179
199 ret = dev->ethtool_ops->set_pauseparam 180 ret = dev->ethtool_ops->set_pauseparam(dev, ¶ms);
200 return ret < 0 ? ret : 1; !! 181 if (ret < 0)
201 } !! 182 goto out_ops;
202 !! 183 ethtool_notify(dev, ETHTOOL_MSG_PAUSE_NTF, NULL);
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 <<
214 184
215 .set_validate = ethnl_set_pa !! 185 out_ops:
216 .set = ethnl_set_pa !! 186 ethnl_ops_complete(dev);
217 .set_ntf_cmd = ETHTOOL_MSG_ !! 187 out_rtnl:
218 }; !! 188 rtnl_unlock();
>> 189 out_dev:
>> 190 dev_put(dev);
>> 191 return ret;
>> 192 }
219 193
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