0bda7af39d
Send ETHTOOL_MSG_DEBUG_NTF notification message whenever debugging message mask for a device are modified using ETHTOOL_MSG_DEBUG_SET netlink message or ETHTOOL_SMSGLVL ioctl request. The notification message has the same format as reply to DEBUG_GET request. As with other ethtool notifications, netlink requests only trigger the notification if the mask is actually changed while ioctl request trigger it whenever the request results in calling the ethtool_ops handler. Signed-off-by: Michal Kubecek <mkubecek@suse.cz> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
135 lines
3.6 KiB
C
135 lines
3.6 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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static const struct nla_policy
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debug_get_policy[ETHTOOL_A_DEBUG_MAX + 1] = {
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[ETHTOOL_A_DEBUG_UNSPEC] = { .type = NLA_REJECT },
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[ETHTOOL_A_DEBUG_HEADER] = { .type = NLA_NESTED },
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[ETHTOOL_A_DEBUG_MSGMASK] = { .type = NLA_REJECT },
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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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.max_attr = ETHTOOL_A_DEBUG_MAX,
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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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.request_policy = debug_get_policy,
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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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static const struct nla_policy
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debug_set_policy[ETHTOOL_A_DEBUG_MAX + 1] = {
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[ETHTOOL_A_DEBUG_UNSPEC] = { .type = NLA_REJECT },
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[ETHTOOL_A_DEBUG_HEADER] = { .type = NLA_NESTED },
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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 nlattr *tb[ETHTOOL_A_DEBUG_MAX + 1];
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struct ethnl_req_info req_info = {};
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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 = nlmsg_parse(info->nlhdr, GENL_HDRLEN, tb,
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ETHTOOL_A_DEBUG_MAX, debug_set_policy,
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info->extack);
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if (ret < 0)
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return ret;
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ret = ethnl_parse_header(&req_info, tb[ETHTOOL_A_DEBUG_HEADER],
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genl_info_net(info), info->extack, 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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if (!dev->ethtool_ops->get_msglevel || !dev->ethtool_ops->set_msglevel)
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return -EOPNOTSUPP;
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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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dev_put(dev);
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return ret;
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}
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