[linux-block.git] / net / ethtool / debug.c

// 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);
}

/* 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 },
};

static int
ethnl_set_debug_validate(struct ethnl_req_info *req_info,
			 struct genl_info *info)
{
	const struct ethtool_ops *ops = req_info->dev->ethtool_ops;

	return ops->get_msglevel && ops->set_msglevel ? 1 : -EOPNOTSUPP;
}

static int
ethnl_set_debug(struct ethnl_req_info *req_info, struct genl_info *info)
{
	struct net_device *dev = req_info->dev;
	struct nlattr **tb = info->attrs;
	bool mod = false;
	u32 msg_mask;
	int ret;

	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)
		return ret;

	dev->ethtool_ops->set_msglevel(dev, msg_mask);
	return 1;
}

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,

	.set_validate		= ethnl_set_debug_validate,
	.set			= ethnl_set_debug,
	.set_ntf_cmd		= ETHTOOL_MSG_DEBUG_NTF,
};
Commit	Line	Data
6a94b8cc MK	1	// SPDX-License-Identifier: GPL-2.0-only
	2
	3	#include "netlink.h"
	4	#include "common.h"
	5	#include "bitset.h"
	6
	7	struct debug_req_info {
	8	struct ethnl_req_info base;
	9	};
	10
	11	struct debug_reply_data {
	12	struct ethnl_reply_data base;
	13	u32 msg_mask;
	14	};
	15
	16	#define DEBUG_REPDATA(__reply_base) \
	17	container_of(__reply_base, struct debug_reply_data, base)
	18
ff419afa	19	const struct nla_policy ethnl_debug_get_policy[] = {
329d9c33 JK	20	[ETHTOOL_A_DEBUG_HEADER] =
329d9c33 JK	21	NLA_POLICY_NESTED(ethnl_header_policy),
6a94b8cc MK	22	};
	23
	24	static int debug_prepare_data(const struct ethnl_req_info *req_base,
	25	struct ethnl_reply_data *reply_base,
	26	struct genl_info *info)
	27	{
	28	struct debug_reply_data *data = DEBUG_REPDATA(reply_base);
	29	struct net_device *dev = reply_base->dev;
	30	int ret;
	31
	32	if (!dev->ethtool_ops->get_msglevel)
	33	return -EOPNOTSUPP;
	34
	35	ret = ethnl_ops_begin(dev);
	36	if (ret < 0)
	37	return ret;
	38	data->msg_mask = dev->ethtool_ops->get_msglevel(dev);
	39	ethnl_ops_complete(dev);
	40
	41	return 0;
	42	}
	43
	44	static int debug_reply_size(const struct ethnl_req_info *req_base,
	45	const struct ethnl_reply_data *reply_base)
	46	{
	47	const struct debug_reply_data *data = DEBUG_REPDATA(reply_base);
	48	bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
	49
	50	return ethnl_bitset32_size(&data->msg_mask, NULL, NETIF_MSG_CLASS_COUNT,
	51	netif_msg_class_names, compact);
	52	}
	53
	54	static int debug_fill_reply(struct sk_buff *skb,
	55	const struct ethnl_req_info *req_base,
	56	const struct ethnl_reply_data *reply_base)
	57	{
	58	const struct debug_reply_data *data = DEBUG_REPDATA(reply_base);
	59	bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
	60
	61	return ethnl_put_bitset32(skb, ETHTOOL_A_DEBUG_MSGMASK, &data->msg_mask,
	62	NULL, NETIF_MSG_CLASS_COUNT,
	63	netif_msg_class_names, compact);
	64	}
	65
e54d04e3 MK	66	/* DEBUG_SET */
e54d04e3 MK	67
ff419afa	68	const struct nla_policy ethnl_debug_set_policy[] = {
329d9c33 JK	69	[ETHTOOL_A_DEBUG_HEADER] =
329d9c33 JK	70	NLA_POLICY_NESTED(ethnl_header_policy),
e54d04e3 MK	71	[ETHTOOL_A_DEBUG_MSGMASK] = { .type = NLA_NESTED },
	72	};
	73
04007961 JK	74	static int
	75	ethnl_set_debug_validate(struct ethnl_req_info *req_info,
	76	struct genl_info *info)
e54d04e3	77	{
04007961 JK	78	const struct ethtool_ops *ops = req_info->dev->ethtool_ops;
	79
	80	return ops->get_msglevel && ops->set_msglevel ? 1 : -EOPNOTSUPP;
	81	}
	82
	83	static int
	84	ethnl_set_debug(struct ethnl_req_info req_info, struct genl_info info)
	85	{
	86	struct net_device *dev = req_info->dev;
5028588b	87	struct nlattr **tb = info->attrs;
e54d04e3 MK	88	bool mod = false;
	89	u32 msg_mask;
	90	int ret;
	91
e54d04e3 MK	92	msg_mask = dev->ethtool_ops->get_msglevel(dev);
	93	ret = ethnl_update_bitset32(&msg_mask, NETIF_MSG_CLASS_COUNT,
	94	tb[ETHTOOL_A_DEBUG_MSGMASK],
	95	netif_msg_class_names, info->extack, &mod);
	96	if (ret < 0 \|\| !mod)
04007961	97	return ret;
e54d04e3 MK	98
e54d04e3 MK	99	dev->ethtool_ops->set_msglevel(dev, msg_mask);
04007961	100	return 1;
e54d04e3	101	}
04007961 JK	102
	103	const struct ethnl_request_ops ethnl_debug_request_ops = {
	104	.request_cmd = ETHTOOL_MSG_DEBUG_GET,
	105	.reply_cmd = ETHTOOL_MSG_DEBUG_GET_REPLY,
	106	.hdr_attr = ETHTOOL_A_DEBUG_HEADER,
	107	.req_info_size = sizeof(struct debug_req_info),
	108	.reply_data_size = sizeof(struct debug_reply_data),
	109
	110	.prepare_data = debug_prepare_data,
	111	.reply_size = debug_reply_size,
	112	.fill_reply = debug_fill_reply,
	113
	114	.set_validate = ethnl_set_debug_validate,
	115	.set = ethnl_set_debug,
	116	.set_ntf_cmd = ETHTOOL_MSG_DEBUG_NTF,
	117	};