net/ethtool/eee.c

Source file repositories/reference/linux-study-clean/net/ethtool/eee.c

File Facts

System
Linux kernel
Corpus path
net/ethtool/eee.c
Extension
.c
Size
4800 bytes
Lines
173
Domain
Networking Core
Bucket
Sockets, Protocols, Packet Path, And Network Policy
Inferred role
Networking Core: implementation source
Status
source implementation candidate

Why This File Exists

Networking stack implementation surface: socket APIs, protocol dispatch, packet flow, routing, filtering, and network namespaces.

Dependency Surface

Detected Declarations

Annotated Snippet

struct eee_req_info {
	struct ethnl_req_info		base;
};

struct eee_reply_data {
	struct ethnl_reply_data		base;
	struct ethtool_keee		eee;
};

#define EEE_REPDATA(__reply_base) \
	container_of(__reply_base, struct eee_reply_data, base)

const struct nla_policy ethnl_eee_get_policy[] = {
	[ETHTOOL_A_EEE_HEADER]		=
		NLA_POLICY_NESTED(ethnl_header_policy),
};

static int eee_prepare_data(const struct ethnl_req_info *req_base,
			    struct ethnl_reply_data *reply_base,
			    const struct genl_info *info)
{
	struct eee_reply_data *data = EEE_REPDATA(reply_base);
	struct net_device *dev = reply_base->dev;
	struct ethtool_keee *eee = &data->eee;
	int ret;

	if (!dev->ethtool_ops->get_eee)
		return -EOPNOTSUPP;
	ret = ethnl_ops_begin(dev);
	if (ret < 0)
		return ret;
	ret = dev->ethtool_ops->get_eee(dev, eee);
	ethnl_ops_complete(dev);

	return ret;
}

static int eee_reply_size(const struct ethnl_req_info *req_base,
			  const struct ethnl_reply_data *reply_base)
{
	bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
	const struct eee_reply_data *data = EEE_REPDATA(reply_base);
	const struct ethtool_keee *eee = &data->eee;
	int len = 0;
	int ret;

	/* MODES_OURS */
	ret = ethnl_bitset_size(eee->advertised, eee->supported,
				__ETHTOOL_LINK_MODE_MASK_NBITS,
				link_mode_names, compact);
	if (ret < 0)
		return ret;
	len += ret;
	/* MODES_PEERS */
	ret = ethnl_bitset_size(eee->lp_advertised, NULL,
				__ETHTOOL_LINK_MODE_MASK_NBITS,
				link_mode_names, compact);
	if (ret < 0)
		return ret;
	len += ret;

	len += nla_total_size(sizeof(u8)) +	/* _EEE_ACTIVE */
	       nla_total_size(sizeof(u8)) +	/* _EEE_ENABLED */
	       nla_total_size(sizeof(u8)) +	/* _EEE_TX_LPI_ENABLED */
	       nla_total_size(sizeof(u32));	/* _EEE_TX_LPI_TIMER */

	return len;
}

static int eee_fill_reply(struct sk_buff *skb,
			  const struct ethnl_req_info *req_base,
			  const struct ethnl_reply_data *reply_base)
{
	bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
	const struct eee_reply_data *data = EEE_REPDATA(reply_base);
	const struct ethtool_keee *eee = &data->eee;
	int ret;

	ret = ethnl_put_bitset(skb, ETHTOOL_A_EEE_MODES_OURS,
			       eee->advertised, eee->supported,
			       __ETHTOOL_LINK_MODE_MASK_NBITS,
			       link_mode_names, compact);
	if (ret < 0)
		return ret;
	ret = ethnl_put_bitset(skb, ETHTOOL_A_EEE_MODES_PEER,
			       eee->lp_advertised, NULL,
			       __ETHTOOL_LINK_MODE_MASK_NBITS,
			       link_mode_names, compact);
	if (ret < 0)
		return ret;

Annotation

Implementation Notes