| // SPDX-License-Identifier: GPL-2.0-only |
| |
| #include "netlink.h" |
| #include "common.h" |
| #include "bitset.h" |
| |
| struct debug_req_info { |
| struct ethnl_req_info base; |
| }; |
| |
| struct debug_reply_data { |
| struct ethnl_reply_data base; |
| u32 msg_mask; |
| }; |
| |
| #define DEBUG_REPDATA(__reply_base) \ |
| container_of(__reply_base, struct debug_reply_data, base) |
| |
| static const struct nla_policy |
| debug_get_policy[ETHTOOL_A_DEBUG_MAX + 1] = { |
| [ETHTOOL_A_DEBUG_UNSPEC] = { .type = NLA_REJECT }, |
| [ETHTOOL_A_DEBUG_HEADER] = { .type = NLA_NESTED }, |
| [ETHTOOL_A_DEBUG_MSGMASK] = { .type = NLA_REJECT }, |
| }; |
| |
| static int debug_prepare_data(const struct ethnl_req_info *req_base, |
| struct ethnl_reply_data *reply_base, |
| struct genl_info *info) |
| { |
| struct debug_reply_data *data = DEBUG_REPDATA(reply_base); |
| struct net_device *dev = reply_base->dev; |
| int ret; |
| |
| if (!dev->ethtool_ops->get_msglevel) |
| return -EOPNOTSUPP; |
| |
| ret = ethnl_ops_begin(dev); |
| if (ret < 0) |
| return ret; |
| data->msg_mask = dev->ethtool_ops->get_msglevel(dev); |
| ethnl_ops_complete(dev); |
| |
| return 0; |
| } |
| |
| static int debug_reply_size(const struct ethnl_req_info *req_base, |
| const struct ethnl_reply_data *reply_base) |
| { |
| const struct debug_reply_data *data = DEBUG_REPDATA(reply_base); |
| bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS; |
| |
| return ethnl_bitset32_size(&data->msg_mask, NULL, NETIF_MSG_CLASS_COUNT, |
| netif_msg_class_names, compact); |
| } |
| |
| static int debug_fill_reply(struct sk_buff *skb, |
| const struct ethnl_req_info *req_base, |
| const struct ethnl_reply_data *reply_base) |
| { |
| const struct debug_reply_data *data = DEBUG_REPDATA(reply_base); |
| bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS; |
| |
| return ethnl_put_bitset32(skb, ETHTOOL_A_DEBUG_MSGMASK, &data->msg_mask, |
| NULL, NETIF_MSG_CLASS_COUNT, |
| netif_msg_class_names, compact); |
| } |
| |
| const struct ethnl_request_ops ethnl_debug_request_ops = { |
| .request_cmd = ETHTOOL_MSG_DEBUG_GET, |
| .reply_cmd = ETHTOOL_MSG_DEBUG_GET_REPLY, |
| .hdr_attr = ETHTOOL_A_DEBUG_HEADER, |
| .max_attr = ETHTOOL_A_DEBUG_MAX, |
| .req_info_size = sizeof(struct debug_req_info), |
| .reply_data_size = sizeof(struct debug_reply_data), |
| .request_policy = debug_get_policy, |
| |
| .prepare_data = debug_prepare_data, |
| .reply_size = debug_reply_size, |
| .fill_reply = debug_fill_reply, |
| }; |
| |
| /* DEBUG_SET */ |
| |
| static const struct nla_policy |
| debug_set_policy[ETHTOOL_A_DEBUG_MAX + 1] = { |
| [ETHTOOL_A_DEBUG_UNSPEC] = { .type = NLA_REJECT }, |
| [ETHTOOL_A_DEBUG_HEADER] = { .type = NLA_NESTED }, |
| [ETHTOOL_A_DEBUG_MSGMASK] = { .type = NLA_NESTED }, |
| }; |
| |
| int ethnl_set_debug(struct sk_buff *skb, struct genl_info *info) |
| { |
| struct nlattr *tb[ETHTOOL_A_DEBUG_MAX + 1]; |
| struct ethnl_req_info req_info = {}; |
| struct net_device *dev; |
| bool mod = false; |
| u32 msg_mask; |
| int ret; |
| |
| ret = nlmsg_parse(info->nlhdr, GENL_HDRLEN, tb, |
| ETHTOOL_A_DEBUG_MAX, debug_set_policy, |
| info->extack); |
| if (ret < 0) |
| return ret; |
| ret = ethnl_parse_header(&req_info, tb[ETHTOOL_A_DEBUG_HEADER], |
| genl_info_net(info), info->extack, true); |
| if (ret < 0) |
| return ret; |
| dev = req_info.dev; |
| if (!dev->ethtool_ops->get_msglevel || !dev->ethtool_ops->set_msglevel) |
| return -EOPNOTSUPP; |
| |
| rtnl_lock(); |
| ret = ethnl_ops_begin(dev); |
| if (ret < 0) |
| goto out_rtnl; |
| |
| msg_mask = dev->ethtool_ops->get_msglevel(dev); |
| ret = ethnl_update_bitset32(&msg_mask, NETIF_MSG_CLASS_COUNT, |
| tb[ETHTOOL_A_DEBUG_MSGMASK], |
| netif_msg_class_names, info->extack, &mod); |
| if (ret < 0 || !mod) |
| goto out_ops; |
| |
| dev->ethtool_ops->set_msglevel(dev, msg_mask); |
| ethtool_notify(dev, ETHTOOL_MSG_DEBUG_NTF, NULL); |
| |
| out_ops: |
| ethnl_ops_complete(dev); |
| out_rtnl: |
| rtnl_unlock(); |
| dev_put(dev); |
| return ret; |
| } |