From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- net/ethtool/debug.c | 128 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 128 insertions(+) create mode 100644 net/ethtool/debug.c (limited to 'net/ethtool/debug.c') diff --git a/net/ethtool/debug.c b/net/ethtool/debug.c new file mode 100644 index 000000000..d73888c7d --- /dev/null +++ b/net/ethtool/debug.c @@ -0,0 +1,128 @@ +// 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) + +const struct nla_policy ethnl_debug_get_policy[] = { + [ETHTOOL_A_DEBUG_HEADER] = + NLA_POLICY_NESTED(ethnl_header_policy), +}; + +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, + .req_info_size = sizeof(struct debug_req_info), + .reply_data_size = sizeof(struct debug_reply_data), + + .prepare_data = debug_prepare_data, + .reply_size = debug_reply_size, + .fill_reply = debug_fill_reply, +}; + +/* DEBUG_SET */ + +const struct nla_policy ethnl_debug_set_policy[] = { + [ETHTOOL_A_DEBUG_HEADER] = + NLA_POLICY_NESTED(ethnl_header_policy), + [ETHTOOL_A_DEBUG_MSGMASK] = { .type = NLA_NESTED }, +}; + +int ethnl_set_debug(struct sk_buff *skb, struct genl_info *info) +{ + struct ethnl_req_info req_info = {}; + struct nlattr **tb = info->attrs; + struct net_device *dev; + bool mod = false; + u32 msg_mask; + int ret; + + ret = ethnl_parse_header_dev_get(&req_info, + tb[ETHTOOL_A_DEBUG_HEADER], + genl_info_net(info), info->extack, + true); + if (ret < 0) + return ret; + dev = req_info.dev; + ret = -EOPNOTSUPP; + if (!dev->ethtool_ops->get_msglevel || !dev->ethtool_ops->set_msglevel) + goto out_dev; + + 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(); +out_dev: + ethnl_parse_header_dev_put(&req_info); + return ret; +} -- cgit v1.2.3