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(&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 /* 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(&msg_mask, NETIF_MSG_CLASS_COUNT, 94 tb[ETHTOOL_A_DEBUG_MSGMASK], 95 netif_msg_class_names, info->extack, &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