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

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

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

struct fec_req_info {
	struct ethnl_req_info		base;
};

struct fec_reply_data {
	struct ethnl_reply_data		base;
	__ETHTOOL_DECLARE_LINK_MODE_MASK(fec_link_modes);
	u32 active_fec;
	u8 fec_auto;
	struct fec_stat_grp {
		u64 stats[1 + ETHTOOL_MAX_LANES];
		u8 cnt;
	} corr, uncorr, corr_bits;
};

#define FEC_REPDATA(__reply_base) \
	container_of(__reply_base, struct fec_reply_data, base)

#define ETHTOOL_FEC_MASK	((ETHTOOL_FEC_LLRS << 1) - 1)

const struct nla_policy ethnl_fec_get_policy[ETHTOOL_A_FEC_HEADER + 1] = {
	[ETHTOOL_A_FEC_HEADER]	= NLA_POLICY_NESTED(ethnl_header_policy_stats),
};

static void
ethtool_fec_to_link_modes(u32 fec, unsigned long *link_modes, u8 *fec_auto)
{
	if (fec_auto)
		*fec_auto = !!(fec & ETHTOOL_FEC_AUTO);

	if (fec & ETHTOOL_FEC_OFF)
		__set_bit(ETHTOOL_LINK_MODE_FEC_NONE_BIT, link_modes);
	if (fec & ETHTOOL_FEC_RS)
		__set_bit(ETHTOOL_LINK_MODE_FEC_RS_BIT, link_modes);
	if (fec & ETHTOOL_FEC_BASER)
		__set_bit(ETHTOOL_LINK_MODE_FEC_BASER_BIT, link_modes);
	if (fec & ETHTOOL_FEC_LLRS)
		__set_bit(ETHTOOL_LINK_MODE_FEC_LLRS_BIT, link_modes);
}

static int
ethtool_link_modes_to_fecparam(struct ethtool_fecparam *fec,
			       unsigned long *link_modes, u8 fec_auto)
{
	memset(fec, 0, sizeof(*fec));

	if (fec_auto)
		fec->fec |= ETHTOOL_FEC_AUTO;

	if (__test_and_clear_bit(ETHTOOL_LINK_MODE_FEC_NONE_BIT, link_modes))
		fec->fec |= ETHTOOL_FEC_OFF;
	if (__test_and_clear_bit(ETHTOOL_LINK_MODE_FEC_RS_BIT, link_modes))
		fec->fec |= ETHTOOL_FEC_RS;
	if (__test_and_clear_bit(ETHTOOL_LINK_MODE_FEC_BASER_BIT, link_modes))
		fec->fec |= ETHTOOL_FEC_BASER;
	if (__test_and_clear_bit(ETHTOOL_LINK_MODE_FEC_LLRS_BIT, link_modes))
		fec->fec |= ETHTOOL_FEC_LLRS;

	if (!bitmap_empty(link_modes, __ETHTOOL_LINK_MODE_MASK_NBITS))
		return -EINVAL;

	return 0;
}

static void
fec_stats_recalc(struct fec_stat_grp *grp, struct ethtool_fec_stat *stats)
{
	int i;

	if (stats->lanes[0] == ETHTOOL_STAT_NOT_SET) {
		grp->stats[0] = stats->total;
		grp->cnt = stats->total != ETHTOOL_STAT_NOT_SET;
		return;
	}

	grp->cnt = 1;
	grp->stats[0] = 0;
	for (i = 0; i < ETHTOOL_MAX_LANES; i++) {
		if (stats->lanes[i] == ETHTOOL_STAT_NOT_SET)
			break;

		grp->stats[0] += stats->lanes[i];
		grp->stats[grp->cnt++] = stats->lanes[i];
	}
}

static int fec_prepare_data(const struct ethnl_req_info *req_base,
			    struct ethnl_reply_data *reply_base,
			    struct genl_info *info)
{
	__ETHTOOL_DECLARE_LINK_MODE_MASK(active_fec_modes) = {};
	struct fec_reply_data *data = FEC_REPDATA(reply_base);
	struct net_device *dev = reply_base->dev;
	struct ethtool_fecparam fec = {};
	int ret;

	if (!dev->ethtool_ops->get_fecparam)
		return -EOPNOTSUPP;
	ret = ethnl_ops_begin(dev);
	if (ret < 0)
		return ret;
	ret = dev->ethtool_ops->get_fecparam(dev, &fec);
	if (ret)
		goto out_complete;
	if (req_base->flags & ETHTOOL_FLAG_STATS &&
	    dev->ethtool_ops->get_fec_stats) {
		struct ethtool_fec_stats stats;

		ethtool_stats_init((u64 *)&stats, sizeof(stats) / 8);
		dev->ethtool_ops->get_fec_stats(dev, &stats);

		fec_stats_recalc(&data->corr, &stats.corrected_blocks);
		fec_stats_recalc(&data->uncorr, &stats.uncorrectable_blocks);
		fec_stats_recalc(&data->corr_bits, &stats.corrected_bits);
	}

	WARN_ON_ONCE(fec.reserved);

	ethtool_fec_to_link_modes(fec.fec, data->fec_link_modes,
				  &data->fec_auto);

	ethtool_fec_to_link_modes(fec.active_fec, active_fec_modes, NULL);
	data->active_fec = find_first_bit(active_fec_modes,
					  __ETHTOOL_LINK_MODE_MASK_NBITS);
	/* Don't report attr if no FEC mode set. Note that
	 * ethtool_fecparam_to_link_modes() ignores NONE and AUTO.
	 */
	if (data->active_fec == __ETHTOOL_LINK_MODE_MASK_NBITS)
		data->active_fec = 0;

out_complete:
	ethnl_ops_complete(dev);
	return ret;
}

static int fec_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 fec_reply_data *data = FEC_REPDATA(reply_base);
	int len = 0;
	int ret;

	ret = ethnl_bitset_size(data->fec_link_modes, NULL,
				__ETHTOOL_LINK_MODE_MASK_NBITS,
				link_mode_names, compact);
	if (ret < 0)
		return ret;
	len += ret;

	len += nla_total_size(sizeof(u8)) +	/* _FEC_AUTO */
	       nla_total_size(sizeof(u32));	/* _FEC_ACTIVE */

	if (req_base->flags & ETHTOOL_FLAG_STATS)
		len += 3 * nla_total_size_64bit(sizeof(u64) *
						(1 + ETHTOOL_MAX_LANES));

	return len;
}

static int fec_put_stats(struct sk_buff *skb, const struct fec_reply_data *data)
{
	struct nlattr *nest;

	nest = nla_nest_start(skb, ETHTOOL_A_FEC_STATS);
	if (!nest)
		return -EMSGSIZE;

	if (nla_put_64bit(skb, ETHTOOL_A_FEC_STAT_CORRECTED,
			  sizeof(u64) * data->corr.cnt,
			  data->corr.stats, ETHTOOL_A_FEC_STAT_PAD) ||
	    nla_put_64bit(skb, ETHTOOL_A_FEC_STAT_UNCORR,
			  sizeof(u64) * data->uncorr.cnt,
			  data->uncorr.stats, ETHTOOL_A_FEC_STAT_PAD) ||
	    nla_put_64bit(skb, ETHTOOL_A_FEC_STAT_CORR_BITS,
			  sizeof(u64) * data->corr_bits.cnt,
			  data->corr_bits.stats, ETHTOOL_A_FEC_STAT_PAD))
		goto err_cancel;

	nla_nest_end(skb, nest);
	return 0;

err_cancel:
	nla_nest_cancel(skb, nest);
	return -EMSGSIZE;
}

static int fec_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 fec_reply_data *data = FEC_REPDATA(reply_base);
	int ret;

	ret = ethnl_put_bitset(skb, ETHTOOL_A_FEC_MODES,
			       data->fec_link_modes, NULL,
			       __ETHTOOL_LINK_MODE_MASK_NBITS,
			       link_mode_names, compact);
	if (ret < 0)
		return ret;

	if (nla_put_u8(skb, ETHTOOL_A_FEC_AUTO, data->fec_auto) ||
	    (data->active_fec &&
	     nla_put_u32(skb, ETHTOOL_A_FEC_ACTIVE, data->active_fec)))
		return -EMSGSIZE;

	if (req_base->flags & ETHTOOL_FLAG_STATS && fec_put_stats(skb, data))
		return -EMSGSIZE;

	return 0;
}

const struct ethnl_request_ops ethnl_fec_request_ops = {
	.request_cmd		= ETHTOOL_MSG_FEC_GET,
	.reply_cmd		= ETHTOOL_MSG_FEC_GET_REPLY,
	.hdr_attr		= ETHTOOL_A_FEC_HEADER,
	.req_info_size		= sizeof(struct fec_req_info),
	.reply_data_size	= sizeof(struct fec_reply_data),

	.prepare_data		= fec_prepare_data,
	.reply_size		= fec_reply_size,
	.fill_reply		= fec_fill_reply,
};

/* FEC_SET */

const struct nla_policy ethnl_fec_set_policy[ETHTOOL_A_FEC_AUTO + 1] = {
	[ETHTOOL_A_FEC_HEADER]	= NLA_POLICY_NESTED(ethnl_header_policy),
	[ETHTOOL_A_FEC_MODES]	= { .type = NLA_NESTED },
	[ETHTOOL_A_FEC_AUTO]	= NLA_POLICY_MAX(NLA_U8, 1),
};

int ethnl_set_fec(struct sk_buff *skb, struct genl_info *info)
{
	__ETHTOOL_DECLARE_LINK_MODE_MASK(fec_link_modes) = {};
	struct ethnl_req_info req_info = {};
	struct nlattr **tb = info->attrs;
	struct ethtool_fecparam fec = {};
	const struct ethtool_ops *ops;
	struct net_device *dev;
	bool mod = false;
	u8 fec_auto;
	int ret;

	ret = ethnl_parse_header_dev_get(&req_info, tb[ETHTOOL_A_FEC_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_fecparam || !ops->set_fecparam)
		goto out_dev;

	rtnl_lock();
	ret = ethnl_ops_begin(dev);
	if (ret < 0)
		goto out_rtnl;
	ret = ops->get_fecparam(dev, &fec);
	if (ret < 0)
		goto out_ops;

	ethtool_fec_to_link_modes(fec.fec, fec_link_modes, &fec_auto);

	ret = ethnl_update_bitset(fec_link_modes,
				  __ETHTOOL_LINK_MODE_MASK_NBITS,
				  tb[ETHTOOL_A_FEC_MODES],
				  link_mode_names, info->extack, &mod);
	if (ret < 0)
		goto out_ops;
	ethnl_update_u8(&fec_auto, tb[ETHTOOL_A_FEC_AUTO], &mod);

	ret = 0;
	if (!mod)
		goto out_ops;

	ret = ethtool_link_modes_to_fecparam(&fec, fec_link_modes, fec_auto);
	if (ret) {
		NL_SET_ERR_MSG_ATTR(info->extack, tb[ETHTOOL_A_FEC_MODES],
				    "invalid FEC modes requested");
		goto out_ops;
	}
	if (!fec.fec) {
		ret = -EINVAL;
		NL_SET_ERR_MSG_ATTR(info->extack, tb[ETHTOOL_A_FEC_MODES],
				    "no FEC modes set");
		goto out_ops;
	}

	ret = dev->ethtool_ops->set_fecparam(dev, &fec);
	if (ret < 0)
		goto out_ops;
	ethtool_notify(dev, ETHTOOL_MSG_FEC_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
1e5d1f69 JK	1	// SPDX-License-Identifier: GPL-2.0-only
	2
	3	#include "netlink.h"
	4	#include "common.h"
	5	#include "bitset.h"
	6
	7	struct fec_req_info {
	8	struct ethnl_req_info base;
	9	};
	10
	11	struct fec_reply_data {
	12	struct ethnl_reply_data base;
	13	__ETHTOOL_DECLARE_LINK_MODE_MASK(fec_link_modes);
	14	u32 active_fec;
	15	u8 fec_auto;
be85dbfe JK	16	struct fec_stat_grp {
	17	u64 stats[1 + ETHTOOL_MAX_LANES];
	18	u8 cnt;
	19	} corr, uncorr, corr_bits;
1e5d1f69 JK	20	};
	21
	22	#define FEC_REPDATA(__reply_base) \
	23	container_of(__reply_base, struct fec_reply_data, base)
	24
	25	#define ETHTOOL_FEC_MASK ((ETHTOOL_FEC_LLRS << 1) - 1)
	26
	27	const struct nla_policy ethnl_fec_get_policy[ETHTOOL_A_FEC_HEADER + 1] = {
be85dbfe	28	[ETHTOOL_A_FEC_HEADER] = NLA_POLICY_NESTED(ethnl_header_policy_stats),
1e5d1f69 JK	29	};
	30
	31	static void
	32	ethtool_fec_to_link_modes(u32 fec, unsigned long link_modes, u8 fec_auto)
	33	{
	34	if (fec_auto)
	35	*fec_auto = !!(fec & ETHTOOL_FEC_AUTO);
	36
	37	if (fec & ETHTOOL_FEC_OFF)
	38	__set_bit(ETHTOOL_LINK_MODE_FEC_NONE_BIT, link_modes);
	39	if (fec & ETHTOOL_FEC_RS)
	40	__set_bit(ETHTOOL_LINK_MODE_FEC_RS_BIT, link_modes);
	41	if (fec & ETHTOOL_FEC_BASER)
	42	__set_bit(ETHTOOL_LINK_MODE_FEC_BASER_BIT, link_modes);
	43	if (fec & ETHTOOL_FEC_LLRS)
	44	__set_bit(ETHTOOL_LINK_MODE_FEC_LLRS_BIT, link_modes);
	45	}
	46
	47	static int
	48	ethtool_link_modes_to_fecparam(struct ethtool_fecparam *fec,
	49	unsigned long *link_modes, u8 fec_auto)
	50	{
	51	memset(fec, 0, sizeof(*fec));
	52
	53	if (fec_auto)
	54	fec->fec \|= ETHTOOL_FEC_AUTO;
	55
	56	if (__test_and_clear_bit(ETHTOOL_LINK_MODE_FEC_NONE_BIT, link_modes))
	57	fec->fec \|= ETHTOOL_FEC_OFF;
	58	if (__test_and_clear_bit(ETHTOOL_LINK_MODE_FEC_RS_BIT, link_modes))
	59	fec->fec \|= ETHTOOL_FEC_RS;
	60	if (__test_and_clear_bit(ETHTOOL_LINK_MODE_FEC_BASER_BIT, link_modes))
	61	fec->fec \|= ETHTOOL_FEC_BASER;
	62	if (__test_and_clear_bit(ETHTOOL_LINK_MODE_FEC_LLRS_BIT, link_modes))
	63	fec->fec \|= ETHTOOL_FEC_LLRS;
	64
	65	if (!bitmap_empty(link_modes, __ETHTOOL_LINK_MODE_MASK_NBITS))
	66	return -EINVAL;
	67
	68	return 0;
	69	}
	70
be85dbfe JK	71	static void
	72	fec_stats_recalc(struct fec_stat_grp grp, struct ethtool_fec_stat stats)
	73	{
	74	int i;
	75
	76	if (stats->lanes[0] == ETHTOOL_STAT_NOT_SET) {
	77	grp->stats[0] = stats->total;
	78	grp->cnt = stats->total != ETHTOOL_STAT_NOT_SET;
	79	return;
	80	}
	81
	82	grp->cnt = 1;
	83	grp->stats[0] = 0;
	84	for (i = 0; i < ETHTOOL_MAX_LANES; i++) {
	85	if (stats->lanes[i] == ETHTOOL_STAT_NOT_SET)
	86	break;
	87
	88	grp->stats[0] += stats->lanes[i];
	89	grp->stats[grp->cnt++] = stats->lanes[i];
	90	}
	91	}
	92
1e5d1f69 JK	93	static int fec_prepare_data(const struct ethnl_req_info *req_base,
	94	struct ethnl_reply_data *reply_base,
	95	struct genl_info *info)
	96	{
	97	__ETHTOOL_DECLARE_LINK_MODE_MASK(active_fec_modes) = {};
	98	struct fec_reply_data *data = FEC_REPDATA(reply_base);
	99	struct net_device *dev = reply_base->dev;
	100	struct ethtool_fecparam fec = {};
	101	int ret;
	102
	103	if (!dev->ethtool_ops->get_fecparam)
	104	return -EOPNOTSUPP;
	105	ret = ethnl_ops_begin(dev);
	106	if (ret < 0)
	107	return ret;
	108	ret = dev->ethtool_ops->get_fecparam(dev, &fec);
1e5d1f69	109	if (ret)
3d7cc109	110	goto out_complete;
be85dbfe JK	111	if (req_base->flags & ETHTOOL_FLAG_STATS &&
	112	dev->ethtool_ops->get_fec_stats) {
	113	struct ethtool_fec_stats stats;
	114
	115	ethtool_stats_init((u64 *)&stats, sizeof(stats) / 8);
	116	dev->ethtool_ops->get_fec_stats(dev, &stats);
	117
	118	fec_stats_recalc(&data->corr, &stats.corrected_blocks);
	119	fec_stats_recalc(&data->uncorr, &stats.uncorrectable_blocks);
	120	fec_stats_recalc(&data->corr_bits, &stats.corrected_bits);
	121	}
1e5d1f69 JK	122
	123	WARN_ON_ONCE(fec.reserved);
	124
	125	ethtool_fec_to_link_modes(fec.fec, data->fec_link_modes,
	126	&data->fec_auto);
	127
	128	ethtool_fec_to_link_modes(fec.active_fec, active_fec_modes, NULL);
	129	data->active_fec = find_first_bit(active_fec_modes,
	130	__ETHTOOL_LINK_MODE_MASK_NBITS);
	131	/* Don't report attr if no FEC mode set. Note that
	132	* ethtool_fecparam_to_link_modes() ignores NONE and AUTO.
	133	*/
	134	if (data->active_fec == __ETHTOOL_LINK_MODE_MASK_NBITS)
	135	data->active_fec = 0;
	136
3d7cc109 JK	137	out_complete:
	138	ethnl_ops_complete(dev);
	139	return ret;
1e5d1f69 JK	140	}
	141
	142	static int fec_reply_size(const struct ethnl_req_info *req_base,
	143	const struct ethnl_reply_data *reply_base)
	144	{
	145	bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
	146	const struct fec_reply_data *data = FEC_REPDATA(reply_base);
	147	int len = 0;
	148	int ret;
	149
	150	ret = ethnl_bitset_size(data->fec_link_modes, NULL,
	151	__ETHTOOL_LINK_MODE_MASK_NBITS,
	152	link_mode_names, compact);
	153	if (ret < 0)
	154	return ret;
	155	len += ret;
	156
	157	len += nla_total_size(sizeof(u8)) + /* _FEC_AUTO */
	158	nla_total_size(sizeof(u32)); /* _FEC_ACTIVE */
	159
be85dbfe JK	160	if (req_base->flags & ETHTOOL_FLAG_STATS)
	161	len += 3 * nla_total_size_64bit(sizeof(u64) *
	162	(1 + ETHTOOL_MAX_LANES));
	163
1e5d1f69 JK	164	return len;
	165	}
	166
be85dbfe JK	167	static int fec_put_stats(struct sk_buff skb, const struct fec_reply_data data)
	168	{
	169	struct nlattr *nest;
	170
	171	nest = nla_nest_start(skb, ETHTOOL_A_FEC_STATS);
	172	if (!nest)
	173	return -EMSGSIZE;
	174
	175	if (nla_put_64bit(skb, ETHTOOL_A_FEC_STAT_CORRECTED,
	176	sizeof(u64) * data->corr.cnt,
	177	data->corr.stats, ETHTOOL_A_FEC_STAT_PAD) \|\|
	178	nla_put_64bit(skb, ETHTOOL_A_FEC_STAT_UNCORR,
	179	sizeof(u64) * data->uncorr.cnt,
	180	data->uncorr.stats, ETHTOOL_A_FEC_STAT_PAD) \|\|
	181	nla_put_64bit(skb, ETHTOOL_A_FEC_STAT_CORR_BITS,
	182	sizeof(u64) * data->corr_bits.cnt,
	183	data->corr_bits.stats, ETHTOOL_A_FEC_STAT_PAD))
	184	goto err_cancel;
	185
	186	nla_nest_end(skb, nest);
	187	return 0;
	188
	189	err_cancel:
	190	nla_nest_cancel(skb, nest);
	191	return -EMSGSIZE;
	192	}
	193
1e5d1f69 JK	194	static int fec_fill_reply(struct sk_buff *skb,
	195	const struct ethnl_req_info *req_base,
	196	const struct ethnl_reply_data *reply_base)
	197	{
	198	bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
	199	const struct fec_reply_data *data = FEC_REPDATA(reply_base);
	200	int ret;
	201
	202	ret = ethnl_put_bitset(skb, ETHTOOL_A_FEC_MODES,
	203	data->fec_link_modes, NULL,
	204	__ETHTOOL_LINK_MODE_MASK_NBITS,
	205	link_mode_names, compact);
	206	if (ret < 0)
	207	return ret;
	208
	209	if (nla_put_u8(skb, ETHTOOL_A_FEC_AUTO, data->fec_auto) \|\|
	210	(data->active_fec &&
	211	nla_put_u32(skb, ETHTOOL_A_FEC_ACTIVE, data->active_fec)))
	212	return -EMSGSIZE;
	213
be85dbfe JK	214	if (req_base->flags & ETHTOOL_FLAG_STATS && fec_put_stats(skb, data))
	215	return -EMSGSIZE;
	216
1e5d1f69 JK	217	return 0;
	218	}
	219
	220	const struct ethnl_request_ops ethnl_fec_request_ops = {
	221	.request_cmd = ETHTOOL_MSG_FEC_GET,
	222	.reply_cmd = ETHTOOL_MSG_FEC_GET_REPLY,
	223	.hdr_attr = ETHTOOL_A_FEC_HEADER,
	224	.req_info_size = sizeof(struct fec_req_info),
	225	.reply_data_size = sizeof(struct fec_reply_data),
	226
	227	.prepare_data = fec_prepare_data,
	228	.reply_size = fec_reply_size,
	229	.fill_reply = fec_fill_reply,
	230	};
	231
	232	/* FEC_SET */
	233
	234	const struct nla_policy ethnl_fec_set_policy[ETHTOOL_A_FEC_AUTO + 1] = {
	235	[ETHTOOL_A_FEC_HEADER] = NLA_POLICY_NESTED(ethnl_header_policy),
	236	[ETHTOOL_A_FEC_MODES] = { .type = NLA_NESTED },
	237	[ETHTOOL_A_FEC_AUTO] = NLA_POLICY_MAX(NLA_U8, 1),
	238	};
	239
	240	int ethnl_set_fec(struct sk_buff skb, struct genl_info info)
	241	{
	242	__ETHTOOL_DECLARE_LINK_MODE_MASK(fec_link_modes) = {};
	243	struct ethnl_req_info req_info = {};
	244	struct nlattr **tb = info->attrs;
	245	struct ethtool_fecparam fec = {};
	246	const struct ethtool_ops *ops;
	247	struct net_device *dev;
	248	bool mod = false;
	249	u8 fec_auto;
	250	int ret;
	251
	252	ret = ethnl_parse_header_dev_get(&req_info, tb[ETHTOOL_A_FEC_HEADER],
	253	genl_info_net(info), info->extack,
	254	true);
	255	if (ret < 0)
	256	return ret;
	257	dev = req_info.dev;
	258	ops = dev->ethtool_ops;
	259	ret = -EOPNOTSUPP;
	260	if (!ops->get_fecparam \|\| !ops->set_fecparam)
	261	goto out_dev;
	262
	263	rtnl_lock();
	264	ret = ethnl_ops_begin(dev);
	265	if (ret < 0)
	266	goto out_rtnl;
	267	ret = ops->get_fecparam(dev, &fec);
	268	if (ret < 0)
	269	goto out_ops;
	270
	271	ethtool_fec_to_link_modes(fec.fec, fec_link_modes, &fec_auto);
	272
	273	ret = ethnl_update_bitset(fec_link_modes,
	274	__ETHTOOL_LINK_MODE_MASK_NBITS,
	275	tb[ETHTOOL_A_FEC_MODES],
	276	link_mode_names, info->extack, &mod);
	277	if (ret < 0)
	278	goto out_ops;
	279	ethnl_update_u8(&fec_auto, tb[ETHTOOL_A_FEC_AUTO], &mod);
	280
281	ret = 0;
282	if (!mod)
283	goto out_ops;
284
285	ret = ethtool_link_modes_to_fecparam(&fec, fec_link_modes, fec_auto);
286	if (ret) {
287	NL_SET_ERR_MSG_ATTR(info->extack, tb[ETHTOOL_A_FEC_MODES],
288	"invalid FEC modes requested");
289	goto out_ops;
290	}
291	if (!fec.fec) {
292	ret = -EINVAL;
293	NL_SET_ERR_MSG_ATTR(info->extack, tb[ETHTOOL_A_FEC_MODES],
294	"no FEC modes set");
295	goto out_ops;
296	}
297
298	ret = dev->ethtool_ops->set_fecparam(dev, &fec);
299	if (ret < 0)
300	goto out_ops;
301	ethtool_notify(dev, ETHTOOL_MSG_FEC_NTF, NULL);
302
303	out_ops:
304	ethnl_ops_complete(dev);
305	out_rtnl:
306	rtnl_unlock();
307	out_dev:
34ac17ec	308	ethnl_parse_header_dev_put(&req_info);
1e5d1f69 JK	309	return ret;
1e5d1f69 JK	310	}