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329d9c333e
To get the most out of parsing by the core, and to allow dumping
full policies we need to specify which policy applies to nested
attrs. For headers it's ethnl_header_policy.
$ sed -i 's@\(ETHTOOL_A_.*HEADER\].*=\) { .type = NLA_NESTED },@\1\n\t\tNLA_POLICY_NESTED(ethnl_header_policy),@' net/ethtool/*
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
128 lines
3.3 KiB
C
128 lines
3.3 KiB
C
// 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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