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 | |
19 | const struct nla_policy ethnl_debug_get_policy[] = { |
20 | [ETHTOOL_A_DEBUG_HEADER] = |
21 | NLA_POLICY_NESTED(ethnl_header_policy), |
22 | }; |
23 | |
24 | static int debug_prepare_data(const struct ethnl_req_info *req_base, |
25 | struct ethnl_reply_data *reply_base, |
26 | const 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(val: &data->msg_mask, NULL, nbits: NETIF_MSG_CLASS_COUNT, |
51 | names: 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, attrtype: ETHTOOL_A_DEBUG_MSGMASK, val: &data->msg_mask, |
62 | NULL, nbits: NETIF_MSG_CLASS_COUNT, |
63 | names: netif_msg_class_names, compact); |
64 | } |
65 | |
66 | /* DEBUG_SET */ |
67 | |
68 | const struct nla_policy ethnl_debug_set_policy[] = { |
69 | [ETHTOOL_A_DEBUG_HEADER] = |
70 | NLA_POLICY_NESTED(ethnl_header_policy), |
71 | [ETHTOOL_A_DEBUG_MSGMASK] = { .type = NLA_NESTED }, |
72 | }; |
73 | |
74 | static int |
75 | ethnl_set_debug_validate(struct ethnl_req_info *req_info, |
76 | struct genl_info *info) |
77 | { |
78 | const struct ethtool_ops *ops = req_info->dev->ethtool_ops; |
79 | |
80 | return ops->get_msglevel && ops->set_msglevel ? 1 : -EOPNOTSUPP; |
81 | } |
82 | |
83 | static int |
84 | ethnl_set_debug(struct ethnl_req_info *req_info, struct genl_info *info) |
85 | { |
86 | struct net_device *dev = req_info->dev; |
87 | struct nlattr **tb = info->attrs; |
88 | bool mod = false; |
89 | u32 msg_mask; |
90 | int ret; |
91 | |
92 | msg_mask = dev->ethtool_ops->get_msglevel(dev); |
93 | ret = ethnl_update_bitset32(bitmap: &msg_mask, nbits: NETIF_MSG_CLASS_COUNT, |
94 | attr: tb[ETHTOOL_A_DEBUG_MSGMASK], |
95 | names: netif_msg_class_names, extack: info->extack, mod: &mod); |
96 | if (ret < 0 || !mod) |
97 | return ret; |
98 | |
99 | dev->ethtool_ops->set_msglevel(dev, msg_mask); |
100 | return 1; |
101 | } |
102 | |
103 | const struct ethnl_request_ops ethnl_debug_request_ops = { |
104 | .request_cmd = ETHTOOL_MSG_DEBUG_GET, |
105 | .reply_cmd = ETHTOOL_MSG_DEBUG_GET_REPLY, |
106 | .hdr_attr = ETHTOOL_A_DEBUG_HEADER, |
107 | .req_info_size = sizeof(struct debug_req_info), |
108 | .reply_data_size = sizeof(struct debug_reply_data), |
109 | |
110 | .prepare_data = debug_prepare_data, |
111 | .reply_size = debug_reply_size, |
112 | .fill_reply = debug_fill_reply, |
113 | |
114 | .set_validate = ethnl_set_debug_validate, |
115 | .set = ethnl_set_debug, |
116 | .set_ntf_cmd = ETHTOOL_MSG_DEBUG_NTF, |
117 | }; |
118 | |