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