[linux.git] / net / ethtool / coalesce.c

// SPDX-License-Identifier: GPL-2.0-only

#include "netlink.h"
#include "common.h"

struct coalesce_req_info {
	struct ethnl_req_info		base;
};

struct coalesce_reply_data {
	struct ethnl_reply_data		base;
	struct ethtool_coalesce		coalesce;
	struct kernel_ethtool_coalesce	kernel_coalesce;
	u32				supported_params;
};

#define COALESCE_REPDATA(__reply_base) \
	container_of(__reply_base, struct coalesce_reply_data, base)

#define __SUPPORTED_OFFSET ETHTOOL_A_COALESCE_RX_USECS
static u32 attr_to_mask(unsigned int attr_type)
{
	return BIT(attr_type - __SUPPORTED_OFFSET);
}

/* build time check that indices in ethtool_ops::supported_coalesce_params
 * match corresponding attribute types with an offset
 */
#define __CHECK_SUPPORTED_OFFSET(x) \
	static_assert((ETHTOOL_ ## x) == \
		      BIT((ETHTOOL_A_ ## x) - __SUPPORTED_OFFSET))
__CHECK_SUPPORTED_OFFSET(COALESCE_RX_USECS);
__CHECK_SUPPORTED_OFFSET(COALESCE_RX_MAX_FRAMES);
__CHECK_SUPPORTED_OFFSET(COALESCE_RX_USECS_IRQ);
__CHECK_SUPPORTED_OFFSET(COALESCE_RX_MAX_FRAMES_IRQ);
__CHECK_SUPPORTED_OFFSET(COALESCE_TX_USECS);
__CHECK_SUPPORTED_OFFSET(COALESCE_TX_MAX_FRAMES);
__CHECK_SUPPORTED_OFFSET(COALESCE_TX_USECS_IRQ);
__CHECK_SUPPORTED_OFFSET(COALESCE_TX_MAX_FRAMES_IRQ);
__CHECK_SUPPORTED_OFFSET(COALESCE_STATS_BLOCK_USECS);
__CHECK_SUPPORTED_OFFSET(COALESCE_USE_ADAPTIVE_RX);
__CHECK_SUPPORTED_OFFSET(COALESCE_USE_ADAPTIVE_TX);
__CHECK_SUPPORTED_OFFSET(COALESCE_PKT_RATE_LOW);
__CHECK_SUPPORTED_OFFSET(COALESCE_RX_USECS_LOW);
__CHECK_SUPPORTED_OFFSET(COALESCE_RX_MAX_FRAMES_LOW);
__CHECK_SUPPORTED_OFFSET(COALESCE_TX_USECS_LOW);
__CHECK_SUPPORTED_OFFSET(COALESCE_TX_MAX_FRAMES_LOW);
__CHECK_SUPPORTED_OFFSET(COALESCE_PKT_RATE_HIGH);
__CHECK_SUPPORTED_OFFSET(COALESCE_RX_USECS_HIGH);
__CHECK_SUPPORTED_OFFSET(COALESCE_RX_MAX_FRAMES_HIGH);
__CHECK_SUPPORTED_OFFSET(COALESCE_TX_USECS_HIGH);
__CHECK_SUPPORTED_OFFSET(COALESCE_TX_MAX_FRAMES_HIGH);
__CHECK_SUPPORTED_OFFSET(COALESCE_RATE_SAMPLE_INTERVAL);

const struct nla_policy ethnl_coalesce_get_policy[] = {
	[ETHTOOL_A_COALESCE_HEADER]		=
		NLA_POLICY_NESTED(ethnl_header_policy),
};

static int coalesce_prepare_data(const struct ethnl_req_info *req_base,
				 struct ethnl_reply_data *reply_base,
				 struct genl_info *info)
{
	struct coalesce_reply_data *data = COALESCE_REPDATA(reply_base);
	struct netlink_ext_ack *extack = info ? info->extack : NULL;
	struct net_device *dev = reply_base->dev;
	int ret;

	if (!dev->ethtool_ops->get_coalesce)
		return -EOPNOTSUPP;
	data->supported_params = dev->ethtool_ops->supported_coalesce_params;
	ret = ethnl_ops_begin(dev);
	if (ret < 0)
		return ret;
	ret = dev->ethtool_ops->get_coalesce(dev, &data->coalesce,
					     &data->kernel_coalesce, extack);
	ethnl_ops_complete(dev);

	return ret;
}

static int coalesce_reply_size(const struct ethnl_req_info *req_base,
			       const struct ethnl_reply_data *reply_base)
{
	return nla_total_size(sizeof(u32)) +	/* _RX_USECS */
	       nla_total_size(sizeof(u32)) +	/* _RX_MAX_FRAMES */
	       nla_total_size(sizeof(u32)) +	/* _RX_USECS_IRQ */
	       nla_total_size(sizeof(u32)) +	/* _RX_MAX_FRAMES_IRQ */
	       nla_total_size(sizeof(u32)) +	/* _TX_USECS */
	       nla_total_size(sizeof(u32)) +	/* _TX_MAX_FRAMES */
	       nla_total_size(sizeof(u32)) +	/* _TX_USECS_IRQ */
	       nla_total_size(sizeof(u32)) +	/* _TX_MAX_FRAMES_IRQ */
	       nla_total_size(sizeof(u32)) +	/* _STATS_BLOCK_USECS */
	       nla_total_size(sizeof(u8)) +	/* _USE_ADAPTIVE_RX */
	       nla_total_size(sizeof(u8)) +	/* _USE_ADAPTIVE_TX */
	       nla_total_size(sizeof(u32)) +	/* _PKT_RATE_LOW */
	       nla_total_size(sizeof(u32)) +	/* _RX_USECS_LOW */
	       nla_total_size(sizeof(u32)) +	/* _RX_MAX_FRAMES_LOW */
	       nla_total_size(sizeof(u32)) +	/* _TX_USECS_LOW */
	       nla_total_size(sizeof(u32)) +	/* _TX_MAX_FRAMES_LOW */
	       nla_total_size(sizeof(u32)) +	/* _PKT_RATE_HIGH */
	       nla_total_size(sizeof(u32)) +	/* _RX_USECS_HIGH */
	       nla_total_size(sizeof(u32)) +	/* _RX_MAX_FRAMES_HIGH */
	       nla_total_size(sizeof(u32)) +	/* _TX_USECS_HIGH */
	       nla_total_size(sizeof(u32)) +	/* _TX_MAX_FRAMES_HIGH */
	       nla_total_size(sizeof(u32)) +	/* _RATE_SAMPLE_INTERVAL */
	       nla_total_size(sizeof(u8)) +	/* _USE_CQE_MODE_TX */
	       nla_total_size(sizeof(u8));	/* _USE_CQE_MODE_RX */
}

static bool coalesce_put_u32(struct sk_buff *skb, u16 attr_type, u32 val,
			     u32 supported_params)
{
	if (!val && !(supported_params & attr_to_mask(attr_type)))
		return false;
	return nla_put_u32(skb, attr_type, val);
}

static bool coalesce_put_bool(struct sk_buff *skb, u16 attr_type, u32 val,
			      u32 supported_params)
{
	if (!val && !(supported_params & attr_to_mask(attr_type)))
		return false;
	return nla_put_u8(skb, attr_type, !!val);
}

static int coalesce_fill_reply(struct sk_buff *skb,
			       const struct ethnl_req_info *req_base,
			       const struct ethnl_reply_data *reply_base)
{
	const struct coalesce_reply_data *data = COALESCE_REPDATA(reply_base);
	const struct kernel_ethtool_coalesce *kcoal = &data->kernel_coalesce;
	const struct ethtool_coalesce *coal = &data->coalesce;
	u32 supported = data->supported_params;

	if (coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_USECS,
			     coal->rx_coalesce_usecs, supported) ||
	    coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_MAX_FRAMES,
			     coal->rx_max_coalesced_frames, supported) ||
	    coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_USECS_IRQ,
			     coal->rx_coalesce_usecs_irq, supported) ||
	    coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_MAX_FRAMES_IRQ,
			     coal->rx_max_coalesced_frames_irq, supported) ||
	    coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_USECS,
			     coal->tx_coalesce_usecs, supported) ||
	    coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_MAX_FRAMES,
			     coal->tx_max_coalesced_frames, supported) ||
	    coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_USECS_IRQ,
			     coal->tx_coalesce_usecs_irq, supported) ||
	    coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_MAX_FRAMES_IRQ,
			     coal->tx_max_coalesced_frames_irq, supported) ||
	    coalesce_put_u32(skb, ETHTOOL_A_COALESCE_STATS_BLOCK_USECS,
			     coal->stats_block_coalesce_usecs, supported) ||
	    coalesce_put_bool(skb, ETHTOOL_A_COALESCE_USE_ADAPTIVE_RX,
			      coal->use_adaptive_rx_coalesce, supported) ||
	    coalesce_put_bool(skb, ETHTOOL_A_COALESCE_USE_ADAPTIVE_TX,
			      coal->use_adaptive_tx_coalesce, supported) ||
	    coalesce_put_u32(skb, ETHTOOL_A_COALESCE_PKT_RATE_LOW,
			     coal->pkt_rate_low, supported) ||
	    coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_USECS_LOW,
			     coal->rx_coalesce_usecs_low, supported) ||
	    coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_MAX_FRAMES_LOW,
			     coal->rx_max_coalesced_frames_low, supported) ||
	    coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_USECS_LOW,
			     coal->tx_coalesce_usecs_low, supported) ||
	    coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_MAX_FRAMES_LOW,
			     coal->tx_max_coalesced_frames_low, supported) ||
	    coalesce_put_u32(skb, ETHTOOL_A_COALESCE_PKT_RATE_HIGH,
			     coal->pkt_rate_high, supported) ||
	    coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_USECS_HIGH,
			     coal->rx_coalesce_usecs_high, supported) ||
	    coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_MAX_FRAMES_HIGH,
			     coal->rx_max_coalesced_frames_high, supported) ||
	    coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_USECS_HIGH,
			     coal->tx_coalesce_usecs_high, supported) ||
	    coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_MAX_FRAMES_HIGH,
			     coal->tx_max_coalesced_frames_high, supported) ||
	    coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RATE_SAMPLE_INTERVAL,
			     coal->rate_sample_interval, supported) ||
	    coalesce_put_bool(skb, ETHTOOL_A_COALESCE_USE_CQE_MODE_TX,
			      kcoal->use_cqe_mode_tx, supported) ||
	    coalesce_put_bool(skb, ETHTOOL_A_COALESCE_USE_CQE_MODE_RX,
			      kcoal->use_cqe_mode_rx, supported))
		return -EMSGSIZE;

	return 0;
}

const struct ethnl_request_ops ethnl_coalesce_request_ops = {
	.request_cmd		= ETHTOOL_MSG_COALESCE_GET,
	.reply_cmd		= ETHTOOL_MSG_COALESCE_GET_REPLY,
	.hdr_attr		= ETHTOOL_A_COALESCE_HEADER,
	.req_info_size		= sizeof(struct coalesce_req_info),
	.reply_data_size	= sizeof(struct coalesce_reply_data),

	.prepare_data		= coalesce_prepare_data,
	.reply_size		= coalesce_reply_size,
	.fill_reply		= coalesce_fill_reply,
};

/* COALESCE_SET */

const struct nla_policy ethnl_coalesce_set_policy[] = {
	[ETHTOOL_A_COALESCE_HEADER]		=
		NLA_POLICY_NESTED(ethnl_header_policy),
	[ETHTOOL_A_COALESCE_RX_USECS]		= { .type = NLA_U32 },
	[ETHTOOL_A_COALESCE_RX_MAX_FRAMES]	= { .type = NLA_U32 },
	[ETHTOOL_A_COALESCE_RX_USECS_IRQ]	= { .type = NLA_U32 },
	[ETHTOOL_A_COALESCE_RX_MAX_FRAMES_IRQ]	= { .type = NLA_U32 },
	[ETHTOOL_A_COALESCE_TX_USECS]		= { .type = NLA_U32 },
	[ETHTOOL_A_COALESCE_TX_MAX_FRAMES]	= { .type = NLA_U32 },
	[ETHTOOL_A_COALESCE_TX_USECS_IRQ]	= { .type = NLA_U32 },
	[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_IRQ]	= { .type = NLA_U32 },
	[ETHTOOL_A_COALESCE_STATS_BLOCK_USECS]	= { .type = NLA_U32 },
	[ETHTOOL_A_COALESCE_USE_ADAPTIVE_RX]	= { .type = NLA_U8 },
	[ETHTOOL_A_COALESCE_USE_ADAPTIVE_TX]	= { .type = NLA_U8 },
	[ETHTOOL_A_COALESCE_PKT_RATE_LOW]	= { .type = NLA_U32 },
	[ETHTOOL_A_COALESCE_RX_USECS_LOW]	= { .type = NLA_U32 },
	[ETHTOOL_A_COALESCE_RX_MAX_FRAMES_LOW]	= { .type = NLA_U32 },
	[ETHTOOL_A_COALESCE_TX_USECS_LOW]	= { .type = NLA_U32 },
	[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_LOW]	= { .type = NLA_U32 },
	[ETHTOOL_A_COALESCE_PKT_RATE_HIGH]	= { .type = NLA_U32 },
	[ETHTOOL_A_COALESCE_RX_USECS_HIGH]	= { .type = NLA_U32 },
	[ETHTOOL_A_COALESCE_RX_MAX_FRAMES_HIGH]	= { .type = NLA_U32 },
	[ETHTOOL_A_COALESCE_TX_USECS_HIGH]	= { .type = NLA_U32 },
	[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_HIGH]	= { .type = NLA_U32 },
	[ETHTOOL_A_COALESCE_RATE_SAMPLE_INTERVAL] = { .type = NLA_U32 },
	[ETHTOOL_A_COALESCE_USE_CQE_MODE_TX]	= NLA_POLICY_MAX(NLA_U8, 1),
	[ETHTOOL_A_COALESCE_USE_CQE_MODE_RX]	= NLA_POLICY_MAX(NLA_U8, 1),
};

int ethnl_set_coalesce(struct sk_buff *skb, struct genl_info *info)
{
	struct kernel_ethtool_coalesce kernel_coalesce = {};
	struct ethtool_coalesce coalesce = {};
	struct ethnl_req_info req_info = {};
	struct nlattr **tb = info->attrs;
	const struct ethtool_ops *ops;
	struct net_device *dev;
	u32 supported_params;
	bool mod = false;
	int ret;
	u16 a;

	ret = ethnl_parse_header_dev_get(&req_info,
					 tb[ETHTOOL_A_COALESCE_HEADER],
					 genl_info_net(info), info->extack,
					 true);
	if (ret < 0)
		return ret;
	dev = req_info.dev;
	ops = dev->ethtool_ops;
	ret = -EOPNOTSUPP;
	if (!ops->get_coalesce || !ops->set_coalesce)
		goto out_dev;

	/* make sure that only supported parameters are present */
	supported_params = ops->supported_coalesce_params;
	for (a = ETHTOOL_A_COALESCE_RX_USECS; a < __ETHTOOL_A_COALESCE_CNT; a++)
		if (tb[a] && !(supported_params & attr_to_mask(a))) {
			ret = -EINVAL;
			NL_SET_ERR_MSG_ATTR(info->extack, tb[a],
					    "cannot modify an unsupported parameter");
			goto out_dev;
		}

	rtnl_lock();
	ret = ethnl_ops_begin(dev);
	if (ret < 0)
		goto out_rtnl;
	ret = ops->get_coalesce(dev, &coalesce, &kernel_coalesce,
				info->extack);
	if (ret < 0)
		goto out_ops;

	ethnl_update_u32(&coalesce.rx_coalesce_usecs,
			 tb[ETHTOOL_A_COALESCE_RX_USECS], &mod);
	ethnl_update_u32(&coalesce.rx_max_coalesced_frames,
			 tb[ETHTOOL_A_COALESCE_RX_MAX_FRAMES], &mod);
	ethnl_update_u32(&coalesce.rx_coalesce_usecs_irq,
			 tb[ETHTOOL_A_COALESCE_RX_USECS_IRQ], &mod);
	ethnl_update_u32(&coalesce.rx_max_coalesced_frames_irq,
			 tb[ETHTOOL_A_COALESCE_RX_MAX_FRAMES_IRQ], &mod);
	ethnl_update_u32(&coalesce.tx_coalesce_usecs,
			 tb[ETHTOOL_A_COALESCE_TX_USECS], &mod);
	ethnl_update_u32(&coalesce.tx_max_coalesced_frames,
			 tb[ETHTOOL_A_COALESCE_TX_MAX_FRAMES], &mod);
	ethnl_update_u32(&coalesce.tx_coalesce_usecs_irq,
			 tb[ETHTOOL_A_COALESCE_TX_USECS_IRQ], &mod);
	ethnl_update_u32(&coalesce.tx_max_coalesced_frames_irq,
			 tb[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_IRQ], &mod);
	ethnl_update_u32(&coalesce.stats_block_coalesce_usecs,
			 tb[ETHTOOL_A_COALESCE_STATS_BLOCK_USECS], &mod);
	ethnl_update_bool32(&coalesce.use_adaptive_rx_coalesce,
			    tb[ETHTOOL_A_COALESCE_USE_ADAPTIVE_RX], &mod);
	ethnl_update_bool32(&coalesce.use_adaptive_tx_coalesce,
			    tb[ETHTOOL_A_COALESCE_USE_ADAPTIVE_TX], &mod);
	ethnl_update_u32(&coalesce.pkt_rate_low,
			 tb[ETHTOOL_A_COALESCE_PKT_RATE_LOW], &mod);
	ethnl_update_u32(&coalesce.rx_coalesce_usecs_low,
			 tb[ETHTOOL_A_COALESCE_RX_USECS_LOW], &mod);
	ethnl_update_u32(&coalesce.rx_max_coalesced_frames_low,
			 tb[ETHTOOL_A_COALESCE_RX_MAX_FRAMES_LOW], &mod);
	ethnl_update_u32(&coalesce.tx_coalesce_usecs_low,
			 tb[ETHTOOL_A_COALESCE_TX_USECS_LOW], &mod);
	ethnl_update_u32(&coalesce.tx_max_coalesced_frames_low,
			 tb[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_LOW], &mod);
	ethnl_update_u32(&coalesce.pkt_rate_high,
			 tb[ETHTOOL_A_COALESCE_PKT_RATE_HIGH], &mod);
	ethnl_update_u32(&coalesce.rx_coalesce_usecs_high,
			 tb[ETHTOOL_A_COALESCE_RX_USECS_HIGH], &mod);
	ethnl_update_u32(&coalesce.rx_max_coalesced_frames_high,
			 tb[ETHTOOL_A_COALESCE_RX_MAX_FRAMES_HIGH], &mod);
	ethnl_update_u32(&coalesce.tx_coalesce_usecs_high,
			 tb[ETHTOOL_A_COALESCE_TX_USECS_HIGH], &mod);
	ethnl_update_u32(&coalesce.tx_max_coalesced_frames_high,
			 tb[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_HIGH], &mod);
	ethnl_update_u32(&coalesce.rate_sample_interval,
			 tb[ETHTOOL_A_COALESCE_RATE_SAMPLE_INTERVAL], &mod);
	ethnl_update_u8(&kernel_coalesce.use_cqe_mode_tx,
			tb[ETHTOOL_A_COALESCE_USE_CQE_MODE_TX], &mod);
	ethnl_update_u8(&kernel_coalesce.use_cqe_mode_rx,
			tb[ETHTOOL_A_COALESCE_USE_CQE_MODE_RX], &mod);
	ret = 0;
	if (!mod)
		goto out_ops;

	ret = dev->ethtool_ops->set_coalesce(dev, &coalesce, &kernel_coalesce,
					     info->extack);
	if (ret < 0)
		goto out_ops;
	ethtool_notify(dev, ETHTOOL_MSG_COALESCE_NTF, NULL);

out_ops:
	ethnl_ops_complete(dev);
out_rtnl:
	rtnl_unlock();
out_dev:
	ethnl_parse_header_dev_put(&req_info);
	return ret;
}
Commit	Line	Data
21727545 MK	1	// SPDX-License-Identifier: GPL-2.0-only
	2
	3	#include "netlink.h"
	4	#include "common.h"
	5
	6	struct coalesce_req_info {
	7	struct ethnl_req_info base;
	8	};
	9
	10	struct coalesce_reply_data {
	11	struct ethnl_reply_data base;
	12	struct ethtool_coalesce coalesce;
029ee6b1	13	struct kernel_ethtool_coalesce kernel_coalesce;
21727545 MK	14	u32 supported_params;
	15	};
	16
	17	#define COALESCE_REPDATA(__reply_base) \
	18	container_of(__reply_base, struct coalesce_reply_data, base)
	19
	20	#define __SUPPORTED_OFFSET ETHTOOL_A_COALESCE_RX_USECS
	21	static u32 attr_to_mask(unsigned int attr_type)
	22	{
	23	return BIT(attr_type - __SUPPORTED_OFFSET);
	24	}
	25
	26	/* build time check that indices in ethtool_ops::supported_coalesce_params
	27	* match corresponding attribute types with an offset
	28	*/
	29	#define __CHECK_SUPPORTED_OFFSET(x) \
	30	static_assert((ETHTOOL_ ## x) == \
	31	BIT((ETHTOOL_A_ ## x) - __SUPPORTED_OFFSET))
	32	__CHECK_SUPPORTED_OFFSET(COALESCE_RX_USECS);
	33	__CHECK_SUPPORTED_OFFSET(COALESCE_RX_MAX_FRAMES);
	34	__CHECK_SUPPORTED_OFFSET(COALESCE_RX_USECS_IRQ);
	35	__CHECK_SUPPORTED_OFFSET(COALESCE_RX_MAX_FRAMES_IRQ);
	36	__CHECK_SUPPORTED_OFFSET(COALESCE_TX_USECS);
	37	__CHECK_SUPPORTED_OFFSET(COALESCE_TX_MAX_FRAMES);
	38	__CHECK_SUPPORTED_OFFSET(COALESCE_TX_USECS_IRQ);
	39	__CHECK_SUPPORTED_OFFSET(COALESCE_TX_MAX_FRAMES_IRQ);
	40	__CHECK_SUPPORTED_OFFSET(COALESCE_STATS_BLOCK_USECS);
	41	__CHECK_SUPPORTED_OFFSET(COALESCE_USE_ADAPTIVE_RX);
	42	__CHECK_SUPPORTED_OFFSET(COALESCE_USE_ADAPTIVE_TX);
	43	__CHECK_SUPPORTED_OFFSET(COALESCE_PKT_RATE_LOW);
	44	__CHECK_SUPPORTED_OFFSET(COALESCE_RX_USECS_LOW);
	45	__CHECK_SUPPORTED_OFFSET(COALESCE_RX_MAX_FRAMES_LOW);
	46	__CHECK_SUPPORTED_OFFSET(COALESCE_TX_USECS_LOW);
	47	__CHECK_SUPPORTED_OFFSET(COALESCE_TX_MAX_FRAMES_LOW);
	48	__CHECK_SUPPORTED_OFFSET(COALESCE_PKT_RATE_HIGH);
	49	__CHECK_SUPPORTED_OFFSET(COALESCE_RX_USECS_HIGH);
	50	__CHECK_SUPPORTED_OFFSET(COALESCE_RX_MAX_FRAMES_HIGH);
	51	__CHECK_SUPPORTED_OFFSET(COALESCE_TX_USECS_HIGH);
	52	__CHECK_SUPPORTED_OFFSET(COALESCE_TX_MAX_FRAMES_HIGH);
	53	__CHECK_SUPPORTED_OFFSET(COALESCE_RATE_SAMPLE_INTERVAL);
	54
ff419afa	55	const struct nla_policy ethnl_coalesce_get_policy[] = {
329d9c33 JK	56	[ETHTOOL_A_COALESCE_HEADER] =
329d9c33 JK	57	NLA_POLICY_NESTED(ethnl_header_policy),
21727545 MK	58	};
	59
	60	static int coalesce_prepare_data(const struct ethnl_req_info *req_base,
	61	struct ethnl_reply_data *reply_base,
	62	struct genl_info *info)
	63	{
	64	struct coalesce_reply_data *data = COALESCE_REPDATA(reply_base);
f3ccfda1	65	struct netlink_ext_ack *extack = info ? info->extack : NULL;
21727545 MK	66	struct net_device *dev = reply_base->dev;
	67	int ret;
	68
	69	if (!dev->ethtool_ops->get_coalesce)
	70	return -EOPNOTSUPP;
	71	data->supported_params = dev->ethtool_ops->supported_coalesce_params;
	72	ret = ethnl_ops_begin(dev);
	73	if (ret < 0)
	74	return ret;
f3ccfda1 YM	75	ret = dev->ethtool_ops->get_coalesce(dev, &data->coalesce,
f3ccfda1 YM	76	&data->kernel_coalesce, extack);
21727545 MK	77	ethnl_ops_complete(dev);
	78
	79	return ret;
	80	}
	81
	82	static int coalesce_reply_size(const struct ethnl_req_info *req_base,
	83	const struct ethnl_reply_data *reply_base)
	84	{
	85	return nla_total_size(sizeof(u32)) + /* _RX_USECS */
	86	nla_total_size(sizeof(u32)) + /* _RX_MAX_FRAMES */
	87	nla_total_size(sizeof(u32)) + /* _RX_USECS_IRQ */
	88	nla_total_size(sizeof(u32)) + /* _RX_MAX_FRAMES_IRQ */
	89	nla_total_size(sizeof(u32)) + /* _TX_USECS */
	90	nla_total_size(sizeof(u32)) + /* _TX_MAX_FRAMES */
	91	nla_total_size(sizeof(u32)) + /* _TX_USECS_IRQ */
	92	nla_total_size(sizeof(u32)) + /* _TX_MAX_FRAMES_IRQ */
	93	nla_total_size(sizeof(u32)) + /* _STATS_BLOCK_USECS */
	94	nla_total_size(sizeof(u8)) + /* _USE_ADAPTIVE_RX */
	95	nla_total_size(sizeof(u8)) + /* _USE_ADAPTIVE_TX */
	96	nla_total_size(sizeof(u32)) + /* _PKT_RATE_LOW */
	97	nla_total_size(sizeof(u32)) + /* _RX_USECS_LOW */
	98	nla_total_size(sizeof(u32)) + /* _RX_MAX_FRAMES_LOW */
	99	nla_total_size(sizeof(u32)) + /* _TX_USECS_LOW */
	100	nla_total_size(sizeof(u32)) + /* _TX_MAX_FRAMES_LOW */
	101	nla_total_size(sizeof(u32)) + /* _PKT_RATE_HIGH */
	102	nla_total_size(sizeof(u32)) + /* _RX_USECS_HIGH */
	103	nla_total_size(sizeof(u32)) + /* _RX_MAX_FRAMES_HIGH */
	104	nla_total_size(sizeof(u32)) + /* _TX_USECS_HIGH */
	105	nla_total_size(sizeof(u32)) + /* _TX_MAX_FRAMES_HIGH */
029ee6b1 YM	106	nla_total_size(sizeof(u32)) + /* _RATE_SAMPLE_INTERVAL */
	107	nla_total_size(sizeof(u8)) + /* _USE_CQE_MODE_TX */
	108	nla_total_size(sizeof(u8)); /* _USE_CQE_MODE_RX */
21727545 MK	109	}
	110
	111	static bool coalesce_put_u32(struct sk_buff *skb, u16 attr_type, u32 val,
	112	u32 supported_params)
	113	{
	114	if (!val && !(supported_params & attr_to_mask(attr_type)))
	115	return false;
	116	return nla_put_u32(skb, attr_type, val);
	117	}
	118
	119	static bool coalesce_put_bool(struct sk_buff *skb, u16 attr_type, u32 val,
	120	u32 supported_params)
	121	{
	122	if (!val && !(supported_params & attr_to_mask(attr_type)))
	123	return false;
	124	return nla_put_u8(skb, attr_type, !!val);
	125	}
	126
	127	static int coalesce_fill_reply(struct sk_buff *skb,
	128	const struct ethnl_req_info *req_base,
	129	const struct ethnl_reply_data *reply_base)
	130	{
	131	const struct coalesce_reply_data *data = COALESCE_REPDATA(reply_base);
029ee6b1	132	const struct kernel_ethtool_coalesce *kcoal = &data->kernel_coalesce;
21727545 MK	133	const struct ethtool_coalesce *coal = &data->coalesce;
	134	u32 supported = data->supported_params;
	135
	136	if (coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_USECS,
	137	coal->rx_coalesce_usecs, supported) \|\|
	138	coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_MAX_FRAMES,
	139	coal->rx_max_coalesced_frames, supported) \|\|
	140	coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_USECS_IRQ,
	141	coal->rx_coalesce_usecs_irq, supported) \|\|
	142	coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_MAX_FRAMES_IRQ,
	143	coal->rx_max_coalesced_frames_irq, supported) \|\|
	144	coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_USECS,
	145	coal->tx_coalesce_usecs, supported) \|\|
	146	coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_MAX_FRAMES,
	147	coal->tx_max_coalesced_frames, supported) \|\|
	148	coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_USECS_IRQ,
	149	coal->tx_coalesce_usecs_irq, supported) \|\|
	150	coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_MAX_FRAMES_IRQ,
	151	coal->tx_max_coalesced_frames_irq, supported) \|\|
	152	coalesce_put_u32(skb, ETHTOOL_A_COALESCE_STATS_BLOCK_USECS,
	153	coal->stats_block_coalesce_usecs, supported) \|\|
	154	coalesce_put_bool(skb, ETHTOOL_A_COALESCE_USE_ADAPTIVE_RX,
	155	coal->use_adaptive_rx_coalesce, supported) \|\|
	156	coalesce_put_bool(skb, ETHTOOL_A_COALESCE_USE_ADAPTIVE_TX,
	157	coal->use_adaptive_tx_coalesce, supported) \|\|
	158	coalesce_put_u32(skb, ETHTOOL_A_COALESCE_PKT_RATE_LOW,
	159	coal->pkt_rate_low, supported) \|\|
	160	coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_USECS_LOW,
	161	coal->rx_coalesce_usecs_low, supported) \|\|
	162	coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_MAX_FRAMES_LOW,
	163	coal->rx_max_coalesced_frames_low, supported) \|\|
	164	coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_USECS_LOW,
	165	coal->tx_coalesce_usecs_low, supported) \|\|
	166	coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_MAX_FRAMES_LOW,
	167	coal->tx_max_coalesced_frames_low, supported) \|\|
	168	coalesce_put_u32(skb, ETHTOOL_A_COALESCE_PKT_RATE_HIGH,
	169	coal->pkt_rate_high, supported) \|\|
	170	coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_USECS_HIGH,
	171	coal->rx_coalesce_usecs_high, supported) \|\|
	172	coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_MAX_FRAMES_HIGH,
	173	coal->rx_max_coalesced_frames_high, supported) \|\|
	174	coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_USECS_HIGH,
	175	coal->tx_coalesce_usecs_high, supported) \|\|
	176	coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_MAX_FRAMES_HIGH,
	177	coal->tx_max_coalesced_frames_high, supported) \|\|
	178	coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RATE_SAMPLE_INTERVAL,
029ee6b1 YM	179	coal->rate_sample_interval, supported) \|\|
	180	coalesce_put_bool(skb, ETHTOOL_A_COALESCE_USE_CQE_MODE_TX,
	181	kcoal->use_cqe_mode_tx, supported) \|\|
	182	coalesce_put_bool(skb, ETHTOOL_A_COALESCE_USE_CQE_MODE_RX,
	183	kcoal->use_cqe_mode_rx, supported))
21727545 MK	184	return -EMSGSIZE;
	185
	186	return 0;
	187	}
	188
	189	const struct ethnl_request_ops ethnl_coalesce_request_ops = {
	190	.request_cmd = ETHTOOL_MSG_COALESCE_GET,
	191	.reply_cmd = ETHTOOL_MSG_COALESCE_GET_REPLY,
	192	.hdr_attr = ETHTOOL_A_COALESCE_HEADER,
21727545 MK	193	.req_info_size = sizeof(struct coalesce_req_info),
21727545 MK	194	.reply_data_size = sizeof(struct coalesce_reply_data),
21727545 MK	195
	196	.prepare_data = coalesce_prepare_data,
	197	.reply_size = coalesce_reply_size,
	198	.fill_reply = coalesce_fill_reply,
	199	};
9881418c MK	200
	201	/* COALESCE_SET */
	202
ff419afa	203	const struct nla_policy ethnl_coalesce_set_policy[] = {
329d9c33 JK	204	[ETHTOOL_A_COALESCE_HEADER] =
329d9c33 JK	205	NLA_POLICY_NESTED(ethnl_header_policy),
9881418c MK	206	[ETHTOOL_A_COALESCE_RX_USECS] = { .type = NLA_U32 },
	207	[ETHTOOL_A_COALESCE_RX_MAX_FRAMES] = { .type = NLA_U32 },
	208	[ETHTOOL_A_COALESCE_RX_USECS_IRQ] = { .type = NLA_U32 },
	209	[ETHTOOL_A_COALESCE_RX_MAX_FRAMES_IRQ] = { .type = NLA_U32 },
	210	[ETHTOOL_A_COALESCE_TX_USECS] = { .type = NLA_U32 },
	211	[ETHTOOL_A_COALESCE_TX_MAX_FRAMES] = { .type = NLA_U32 },
	212	[ETHTOOL_A_COALESCE_TX_USECS_IRQ] = { .type = NLA_U32 },
	213	[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_IRQ] = { .type = NLA_U32 },
	214	[ETHTOOL_A_COALESCE_STATS_BLOCK_USECS] = { .type = NLA_U32 },
	215	[ETHTOOL_A_COALESCE_USE_ADAPTIVE_RX] = { .type = NLA_U8 },
	216	[ETHTOOL_A_COALESCE_USE_ADAPTIVE_TX] = { .type = NLA_U8 },
	217	[ETHTOOL_A_COALESCE_PKT_RATE_LOW] = { .type = NLA_U32 },
	218	[ETHTOOL_A_COALESCE_RX_USECS_LOW] = { .type = NLA_U32 },
	219	[ETHTOOL_A_COALESCE_RX_MAX_FRAMES_LOW] = { .type = NLA_U32 },
	220	[ETHTOOL_A_COALESCE_TX_USECS_LOW] = { .type = NLA_U32 },
	221	[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_LOW] = { .type = NLA_U32 },
	222	[ETHTOOL_A_COALESCE_PKT_RATE_HIGH] = { .type = NLA_U32 },
	223	[ETHTOOL_A_COALESCE_RX_USECS_HIGH] = { .type = NLA_U32 },
	224	[ETHTOOL_A_COALESCE_RX_MAX_FRAMES_HIGH] = { .type = NLA_U32 },
	225	[ETHTOOL_A_COALESCE_TX_USECS_HIGH] = { .type = NLA_U32 },
	226	[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_HIGH] = { .type = NLA_U32 },
	227	[ETHTOOL_A_COALESCE_RATE_SAMPLE_INTERVAL] = { .type = NLA_U32 },
029ee6b1 YM	228	[ETHTOOL_A_COALESCE_USE_CQE_MODE_TX] = NLA_POLICY_MAX(NLA_U8, 1),
029ee6b1 YM	229	[ETHTOOL_A_COALESCE_USE_CQE_MODE_RX] = NLA_POLICY_MAX(NLA_U8, 1),
9881418c MK	230	};
	231
	232	int ethnl_set_coalesce(struct sk_buff skb, struct genl_info info)
	233	{
029ee6b1	234	struct kernel_ethtool_coalesce kernel_coalesce = {};
9881418c MK	235	struct ethtool_coalesce coalesce = {};
9881418c MK	236	struct ethnl_req_info req_info = {};
5028588b	237	struct nlattr **tb = info->attrs;
9881418c MK	238	const struct ethtool_ops *ops;
	239	struct net_device *dev;
	240	u32 supported_params;
	241	bool mod = false;
	242	int ret;
	243	u16 a;
	244
9881418c MK	245	ret = ethnl_parse_header_dev_get(&req_info,
	246	tb[ETHTOOL_A_COALESCE_HEADER],
	247	genl_info_net(info), info->extack,
	248	true);
	249	if (ret < 0)
	250	return ret;
	251	dev = req_info.dev;
	252	ops = dev->ethtool_ops;
	253	ret = -EOPNOTSUPP;
	254	if (!ops->get_coalesce \|\| !ops->set_coalesce)
	255	goto out_dev;
	256
	257	/* make sure that only supported parameters are present */
	258	supported_params = ops->supported_coalesce_params;
	259	for (a = ETHTOOL_A_COALESCE_RX_USECS; a < __ETHTOOL_A_COALESCE_CNT; a++)
	260	if (tb[a] && !(supported_params & attr_to_mask(a))) {
	261	ret = -EINVAL;
	262	NL_SET_ERR_MSG_ATTR(info->extack, tb[a],
	263	"cannot modify an unsupported parameter");
	264	goto out_dev;
	265	}
	266
	267	rtnl_lock();
	268	ret = ethnl_ops_begin(dev);
	269	if (ret < 0)
	270	goto out_rtnl;
f3ccfda1 YM	271	ret = ops->get_coalesce(dev, &coalesce, &kernel_coalesce,
f3ccfda1 YM	272	info->extack);
9881418c MK	273	if (ret < 0)
	274	goto out_ops;
	275
	276	ethnl_update_u32(&coalesce.rx_coalesce_usecs,
	277	tb[ETHTOOL_A_COALESCE_RX_USECS], &mod);
	278	ethnl_update_u32(&coalesce.rx_max_coalesced_frames,
	279	tb[ETHTOOL_A_COALESCE_RX_MAX_FRAMES], &mod);
	280	ethnl_update_u32(&coalesce.rx_coalesce_usecs_irq,
	281	tb[ETHTOOL_A_COALESCE_RX_USECS_IRQ], &mod);
	282	ethnl_update_u32(&coalesce.rx_max_coalesced_frames_irq,
	283	tb[ETHTOOL_A_COALESCE_RX_MAX_FRAMES_IRQ], &mod);
	284	ethnl_update_u32(&coalesce.tx_coalesce_usecs,
	285	tb[ETHTOOL_A_COALESCE_TX_USECS], &mod);
	286	ethnl_update_u32(&coalesce.tx_max_coalesced_frames,
	287	tb[ETHTOOL_A_COALESCE_TX_MAX_FRAMES], &mod);
	288	ethnl_update_u32(&coalesce.tx_coalesce_usecs_irq,
	289	tb[ETHTOOL_A_COALESCE_TX_USECS_IRQ], &mod);
	290	ethnl_update_u32(&coalesce.tx_max_coalesced_frames_irq,
	291	tb[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_IRQ], &mod);
	292	ethnl_update_u32(&coalesce.stats_block_coalesce_usecs,
	293	tb[ETHTOOL_A_COALESCE_STATS_BLOCK_USECS], &mod);
	294	ethnl_update_bool32(&coalesce.use_adaptive_rx_coalesce,
	295	tb[ETHTOOL_A_COALESCE_USE_ADAPTIVE_RX], &mod);
	296	ethnl_update_bool32(&coalesce.use_adaptive_tx_coalesce,
	297	tb[ETHTOOL_A_COALESCE_USE_ADAPTIVE_TX], &mod);
	298	ethnl_update_u32(&coalesce.pkt_rate_low,
	299	tb[ETHTOOL_A_COALESCE_PKT_RATE_LOW], &mod);
	300	ethnl_update_u32(&coalesce.rx_coalesce_usecs_low,
	301	tb[ETHTOOL_A_COALESCE_RX_USECS_LOW], &mod);
	302	ethnl_update_u32(&coalesce.rx_max_coalesced_frames_low,
	303	tb[ETHTOOL_A_COALESCE_RX_MAX_FRAMES_LOW], &mod);
	304	ethnl_update_u32(&coalesce.tx_coalesce_usecs_low,
	305	tb[ETHTOOL_A_COALESCE_TX_USECS_LOW], &mod);
	306	ethnl_update_u32(&coalesce.tx_max_coalesced_frames_low,
	307	tb[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_LOW], &mod);
	308	ethnl_update_u32(&coalesce.pkt_rate_high,
	309	tb[ETHTOOL_A_COALESCE_PKT_RATE_HIGH], &mod);
	310	ethnl_update_u32(&coalesce.rx_coalesce_usecs_high,
	311	tb[ETHTOOL_A_COALESCE_RX_USECS_HIGH], &mod);
	312	ethnl_update_u32(&coalesce.rx_max_coalesced_frames_high,
	313	tb[ETHTOOL_A_COALESCE_RX_MAX_FRAMES_HIGH], &mod);
	314	ethnl_update_u32(&coalesce.tx_coalesce_usecs_high,
	315	tb[ETHTOOL_A_COALESCE_TX_USECS_HIGH], &mod);
	316	ethnl_update_u32(&coalesce.tx_max_coalesced_frames_high,
	317	tb[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_HIGH], &mod);
	318	ethnl_update_u32(&coalesce.rate_sample_interval,
	319	tb[ETHTOOL_A_COALESCE_RATE_SAMPLE_INTERVAL], &mod);
029ee6b1 YM	320	ethnl_update_u8(&kernel_coalesce.use_cqe_mode_tx,
	321	tb[ETHTOOL_A_COALESCE_USE_CQE_MODE_TX], &mod);
	322	ethnl_update_u8(&kernel_coalesce.use_cqe_mode_rx,
	323	tb[ETHTOOL_A_COALESCE_USE_CQE_MODE_RX], &mod);
9881418c MK	324	ret = 0;
	325	if (!mod)
	326	goto out_ops;
	327
f3ccfda1 YM	328	ret = dev->ethtool_ops->set_coalesce(dev, &coalesce, &kernel_coalesce,
f3ccfda1 YM	329	info->extack);
0cf3eac8 MK	330	if (ret < 0)
	331	goto out_ops;
	332	ethtool_notify(dev, ETHTOOL_MSG_COALESCE_NTF, NULL);
9881418c MK	333
	334	out_ops:
	335	ethnl_ops_complete(dev);
	336	out_rtnl:
	337	rtnl_unlock();
	338	out_dev:
34ac17ec	339	ethnl_parse_header_dev_put(&req_info);
9881418c MK	340	return ret;
9881418c MK	341	}