// 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); out_ops: ethnl_ops_complete(dev); out_rtnl: rtnl_unlock(); dev_put(dev); return ret; }