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6a94b8cc MK |
1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | ||
3 | #include "netlink.h" | |
4 | #include "common.h" | |
5 | #include "bitset.h" | |
6 | ||
7 | struct debug_req_info { | |
8 | struct ethnl_req_info base; | |
9 | }; | |
10 | ||
11 | struct debug_reply_data { | |
12 | struct ethnl_reply_data base; | |
13 | u32 msg_mask; | |
14 | }; | |
15 | ||
16 | #define DEBUG_REPDATA(__reply_base) \ | |
17 | container_of(__reply_base, struct debug_reply_data, base) | |
18 | ||
ff419afa | 19 | const struct nla_policy ethnl_debug_get_policy[] = { |
329d9c33 JK |
20 | [ETHTOOL_A_DEBUG_HEADER] = |
21 | NLA_POLICY_NESTED(ethnl_header_policy), | |
6a94b8cc MK |
22 | }; |
23 | ||
24 | static int debug_prepare_data(const struct ethnl_req_info *req_base, | |
25 | struct ethnl_reply_data *reply_base, | |
26 | struct genl_info *info) | |
27 | { | |
28 | struct debug_reply_data *data = DEBUG_REPDATA(reply_base); | |
29 | struct net_device *dev = reply_base->dev; | |
30 | int ret; | |
31 | ||
32 | if (!dev->ethtool_ops->get_msglevel) | |
33 | return -EOPNOTSUPP; | |
34 | ||
35 | ret = ethnl_ops_begin(dev); | |
36 | if (ret < 0) | |
37 | return ret; | |
38 | data->msg_mask = dev->ethtool_ops->get_msglevel(dev); | |
39 | ethnl_ops_complete(dev); | |
40 | ||
41 | return 0; | |
42 | } | |
43 | ||
44 | static int debug_reply_size(const struct ethnl_req_info *req_base, | |
45 | const struct ethnl_reply_data *reply_base) | |
46 | { | |
47 | const struct debug_reply_data *data = DEBUG_REPDATA(reply_base); | |
48 | bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS; | |
49 | ||
50 | return ethnl_bitset32_size(&data->msg_mask, NULL, NETIF_MSG_CLASS_COUNT, | |
51 | netif_msg_class_names, compact); | |
52 | } | |
53 | ||
54 | static int debug_fill_reply(struct sk_buff *skb, | |
55 | const struct ethnl_req_info *req_base, | |
56 | const struct ethnl_reply_data *reply_base) | |
57 | { | |
58 | const struct debug_reply_data *data = DEBUG_REPDATA(reply_base); | |
59 | bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS; | |
60 | ||
61 | return ethnl_put_bitset32(skb, ETHTOOL_A_DEBUG_MSGMASK, &data->msg_mask, | |
62 | NULL, NETIF_MSG_CLASS_COUNT, | |
63 | netif_msg_class_names, compact); | |
64 | } | |
65 | ||
66 | const struct ethnl_request_ops ethnl_debug_request_ops = { | |
67 | .request_cmd = ETHTOOL_MSG_DEBUG_GET, | |
68 | .reply_cmd = ETHTOOL_MSG_DEBUG_GET_REPLY, | |
69 | .hdr_attr = ETHTOOL_A_DEBUG_HEADER, | |
6a94b8cc MK |
70 | .req_info_size = sizeof(struct debug_req_info), |
71 | .reply_data_size = sizeof(struct debug_reply_data), | |
6a94b8cc MK |
72 | |
73 | .prepare_data = debug_prepare_data, | |
74 | .reply_size = debug_reply_size, | |
75 | .fill_reply = debug_fill_reply, | |
76 | }; | |
e54d04e3 MK |
77 | |
78 | /* DEBUG_SET */ | |
79 | ||
ff419afa | 80 | const struct nla_policy ethnl_debug_set_policy[] = { |
329d9c33 JK |
81 | [ETHTOOL_A_DEBUG_HEADER] = |
82 | NLA_POLICY_NESTED(ethnl_header_policy), | |
e54d04e3 MK |
83 | [ETHTOOL_A_DEBUG_MSGMASK] = { .type = NLA_NESTED }, |
84 | }; | |
85 | ||
86 | int ethnl_set_debug(struct sk_buff *skb, struct genl_info *info) | |
87 | { | |
e54d04e3 | 88 | struct ethnl_req_info req_info = {}; |
5028588b | 89 | struct nlattr **tb = info->attrs; |
e54d04e3 MK |
90 | struct net_device *dev; |
91 | bool mod = false; | |
92 | u32 msg_mask; | |
93 | int ret; | |
94 | ||
98130546 MK |
95 | ret = ethnl_parse_header_dev_get(&req_info, |
96 | tb[ETHTOOL_A_DEBUG_HEADER], | |
97 | genl_info_net(info), info->extack, | |
98 | true); | |
e54d04e3 MK |
99 | if (ret < 0) |
100 | return ret; | |
101 | dev = req_info.dev; | |
2f599ec4 | 102 | ret = -EOPNOTSUPP; |
e54d04e3 | 103 | if (!dev->ethtool_ops->get_msglevel || !dev->ethtool_ops->set_msglevel) |
2f599ec4 | 104 | goto out_dev; |
e54d04e3 MK |
105 | |
106 | rtnl_lock(); | |
107 | ret = ethnl_ops_begin(dev); | |
108 | if (ret < 0) | |
109 | goto out_rtnl; | |
110 | ||
111 | msg_mask = dev->ethtool_ops->get_msglevel(dev); | |
112 | ret = ethnl_update_bitset32(&msg_mask, NETIF_MSG_CLASS_COUNT, | |
113 | tb[ETHTOOL_A_DEBUG_MSGMASK], | |
114 | netif_msg_class_names, info->extack, &mod); | |
115 | if (ret < 0 || !mod) | |
116 | goto out_ops; | |
117 | ||
118 | dev->ethtool_ops->set_msglevel(dev, msg_mask); | |
0bda7af3 | 119 | ethtool_notify(dev, ETHTOOL_MSG_DEBUG_NTF, NULL); |
e54d04e3 MK |
120 | |
121 | out_ops: | |
122 | ethnl_ops_complete(dev); | |
123 | out_rtnl: | |
124 | rtnl_unlock(); | |
2f599ec4 | 125 | out_dev: |
34ac17ec | 126 | ethnl_parse_header_dev_put(&req_info); |
e54d04e3 MK |
127 | return ret; |
128 | } |