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

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

#include <linux/phy.h>
#include <linux/ethtool_netlink.h>
#include "netlink.h"
#include "common.h"

/* CABLE_TEST_ACT */

static const struct nla_policy
cable_test_act_policy[ETHTOOL_A_CABLE_TEST_MAX + 1] = {
	[ETHTOOL_A_CABLE_TEST_UNSPEC]		= { .type = NLA_REJECT },
	[ETHTOOL_A_CABLE_TEST_HEADER]		= { .type = NLA_NESTED },
};

static int ethnl_cable_test_started(struct phy_device *phydev, u8 cmd)
{
	struct sk_buff *skb;
	int err = -ENOMEM;
	void *ehdr;

	skb = genlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
	if (!skb)
		goto out;

	ehdr = ethnl_bcastmsg_put(skb, cmd);
	if (!ehdr) {
		err = -EMSGSIZE;
		goto out;
	}

	err = ethnl_fill_reply_header(skb, phydev->attached_dev,
				      ETHTOOL_A_CABLE_TEST_NTF_HEADER);
	if (err)
		goto out;

	err = nla_put_u8(skb, ETHTOOL_A_CABLE_TEST_NTF_STATUS,
			 ETHTOOL_A_CABLE_TEST_NTF_STATUS_STARTED);
	if (err)
		goto out;

	genlmsg_end(skb, ehdr);

	return ethnl_multicast(skb, phydev->attached_dev);

out:
	nlmsg_free(skb);
	phydev_err(phydev, "%s: Error %pe\n", __func__, ERR_PTR(err));

	return err;
}

int ethnl_act_cable_test(struct sk_buff *skb, struct genl_info *info)
{
	struct nlattr *tb[ETHTOOL_A_CABLE_TEST_MAX + 1];
	struct ethnl_req_info req_info = {};
	struct net_device *dev;
	int ret;

	ret = nlmsg_parse(info->nlhdr, GENL_HDRLEN, tb,
			  ETHTOOL_A_CABLE_TEST_MAX,
			  cable_test_act_policy, info->extack);
	if (ret < 0)
		return ret;

	ret = ethnl_parse_header_dev_get(&req_info,
					 tb[ETHTOOL_A_CABLE_TEST_HEADER],
					 genl_info_net(info), info->extack,
					 true);
	if (ret < 0)
		return ret;

	dev = req_info.dev;
	if (!dev->phydev) {
		ret = -EOPNOTSUPP;
		goto out_dev_put;
	}

	rtnl_lock();
	ret = ethnl_ops_begin(dev);
	if (ret < 0)
		goto out_rtnl;

	ret = phy_start_cable_test(dev->phydev, info->extack);

	ethnl_ops_complete(dev);

	if (!ret)
		ethnl_cable_test_started(dev->phydev,
					 ETHTOOL_MSG_CABLE_TEST_NTF);

out_rtnl:
	rtnl_unlock();
out_dev_put:
	dev_put(dev);
	return ret;
}

int ethnl_cable_test_alloc(struct phy_device *phydev, u8 cmd)
{
	int err = -ENOMEM;

	phydev->skb = genlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
	if (!phydev->skb)
		goto out;

	phydev->ehdr = ethnl_bcastmsg_put(phydev->skb, cmd);
	if (!phydev->ehdr) {
		err = -EMSGSIZE;
		goto out;
	}

	err = ethnl_fill_reply_header(phydev->skb, phydev->attached_dev,
				      ETHTOOL_A_CABLE_TEST_NTF_HEADER);
	if (err)
		goto out;

	err = nla_put_u8(phydev->skb, ETHTOOL_A_CABLE_TEST_NTF_STATUS,
			 ETHTOOL_A_CABLE_TEST_NTF_STATUS_COMPLETED);
	if (err)
		goto out;

	phydev->nest = nla_nest_start(phydev->skb,
				      ETHTOOL_A_CABLE_TEST_NTF_NEST);
	if (!phydev->nest) {
		err = -EMSGSIZE;
		goto out;
	}

	return 0;

out:
	nlmsg_free(phydev->skb);
	phydev->skb = NULL;
	return err;
}
EXPORT_SYMBOL_GPL(ethnl_cable_test_alloc);

void ethnl_cable_test_free(struct phy_device *phydev)
{
	nlmsg_free(phydev->skb);
	phydev->skb = NULL;
}
EXPORT_SYMBOL_GPL(ethnl_cable_test_free);

void ethnl_cable_test_finished(struct phy_device *phydev)
{
	nla_nest_end(phydev->skb, phydev->nest);

	genlmsg_end(phydev->skb, phydev->ehdr);

	ethnl_multicast(phydev->skb, phydev->attached_dev);
}
EXPORT_SYMBOL_GPL(ethnl_cable_test_finished);

int ethnl_cable_test_result(struct phy_device *phydev, u8 pair, u8 result)
{
	struct nlattr *nest;
	int ret = -EMSGSIZE;

	nest = nla_nest_start(phydev->skb, ETHTOOL_A_CABLE_NEST_RESULT);
	if (!nest)
		return -EMSGSIZE;

	if (nla_put_u8(phydev->skb, ETHTOOL_A_CABLE_RESULT_PAIR, pair))
		goto err;
	if (nla_put_u8(phydev->skb, ETHTOOL_A_CABLE_RESULT_CODE, result))
		goto err;

	nla_nest_end(phydev->skb, nest);
	return 0;

err:
	nla_nest_cancel(phydev->skb, nest);
	return ret;
}
EXPORT_SYMBOL_GPL(ethnl_cable_test_result);

int ethnl_cable_test_fault_length(struct phy_device *phydev, u8 pair, u32 cm)
{
	struct nlattr *nest;
	int ret = -EMSGSIZE;

	nest = nla_nest_start(phydev->skb,
			      ETHTOOL_A_CABLE_NEST_FAULT_LENGTH);
	if (!nest)
		return -EMSGSIZE;

	if (nla_put_u8(phydev->skb, ETHTOOL_A_CABLE_FAULT_LENGTH_PAIR, pair))
		goto err;
	if (nla_put_u32(phydev->skb, ETHTOOL_A_CABLE_FAULT_LENGTH_CM, cm))
		goto err;

	nla_nest_end(phydev->skb, nest);
	return 0;

err:
	nla_nest_cancel(phydev->skb, nest);
	return ret;
}
EXPORT_SYMBOL_GPL(ethnl_cable_test_fault_length);

static const struct nla_policy
cable_test_tdr_act_policy[ETHTOOL_A_CABLE_TEST_TDR_MAX + 1] = {
	[ETHTOOL_A_CABLE_TEST_TDR_UNSPEC]	= { .type = NLA_REJECT },
	[ETHTOOL_A_CABLE_TEST_TDR_HEADER]	= { .type = NLA_NESTED },
};

int ethnl_act_cable_test_tdr(struct sk_buff *skb, struct genl_info *info)
{
	struct nlattr *tb[ETHTOOL_A_CABLE_TEST_TDR_MAX + 1];
	struct ethnl_req_info req_info = {};
	struct net_device *dev;
	int ret;

	ret = nlmsg_parse(info->nlhdr, GENL_HDRLEN, tb,
			  ETHTOOL_A_CABLE_TEST_TDR_MAX,
			  cable_test_tdr_act_policy, info->extack);
	if (ret < 0)
		return ret;

	ret = ethnl_parse_header_dev_get(&req_info,
					 tb[ETHTOOL_A_CABLE_TEST_TDR_HEADER],
					 genl_info_net(info), info->extack,
					 true);
	if (ret < 0)
		return ret;

	dev = req_info.dev;
	if (!dev->phydev) {
		ret = -EOPNOTSUPP;
		goto out_dev_put;
	}

	rtnl_lock();
	ret = ethnl_ops_begin(dev);
	if (ret < 0)
		goto out_rtnl;

	ret = phy_start_cable_test_tdr(dev->phydev, info->extack);

	ethnl_ops_complete(dev);

	if (!ret)
		ethnl_cable_test_started(dev->phydev,
					 ETHTOOL_MSG_CABLE_TEST_TDR_NTF);

out_rtnl:
	rtnl_unlock();
out_dev_put:
	dev_put(dev);
	return ret;
}
Commit	Line	Data
11ca3c42 AL	1	// SPDX-License-Identifier: GPL-2.0-only
	2
	3	#include <linux/phy.h>
1dd3f212	4	#include <linux/ethtool_netlink.h>
11ca3c42 AL	5	#include "netlink.h"
	6	#include "common.h"
	7
	8	/* CABLE_TEST_ACT */
	9
	10	static const struct nla_policy
	11	cable_test_act_policy[ETHTOOL_A_CABLE_TEST_MAX + 1] = {
	12	[ETHTOOL_A_CABLE_TEST_UNSPEC] = { .type = NLA_REJECT },
	13	[ETHTOOL_A_CABLE_TEST_HEADER] = { .type = NLA_NESTED },
	14	};
	15
1a644de2	16	static int ethnl_cable_test_started(struct phy_device *phydev, u8 cmd)
9896a457 AL	17	{
	18	struct sk_buff *skb;
	19	int err = -ENOMEM;
	20	void *ehdr;
	21
	22	skb = genlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
	23	if (!skb)
	24	goto out;
	25
1a644de2	26	ehdr = ethnl_bcastmsg_put(skb, cmd);
9896a457 AL	27	if (!ehdr) {
	28	err = -EMSGSIZE;
	29	goto out;
	30	}
	31
	32	err = ethnl_fill_reply_header(skb, phydev->attached_dev,
	33	ETHTOOL_A_CABLE_TEST_NTF_HEADER);
	34	if (err)
	35	goto out;
	36
	37	err = nla_put_u8(skb, ETHTOOL_A_CABLE_TEST_NTF_STATUS,
	38	ETHTOOL_A_CABLE_TEST_NTF_STATUS_STARTED);
	39	if (err)
	40	goto out;
	41
	42	genlmsg_end(skb, ehdr);
	43
	44	return ethnl_multicast(skb, phydev->attached_dev);
	45
	46	out:
	47	nlmsg_free(skb);
	48	phydev_err(phydev, "%s: Error %pe\n", __func__, ERR_PTR(err));
	49
	50	return err;
	51	}
	52
11ca3c42 AL	53	int ethnl_act_cable_test(struct sk_buff skb, struct genl_info info)
	54	{
	55	struct nlattr *tb[ETHTOOL_A_CABLE_TEST_MAX + 1];
	56	struct ethnl_req_info req_info = {};
	57	struct net_device *dev;
	58	int ret;
	59
	60	ret = nlmsg_parse(info->nlhdr, GENL_HDRLEN, tb,
	61	ETHTOOL_A_CABLE_TEST_MAX,
	62	cable_test_act_policy, info->extack);
	63	if (ret < 0)
	64	return ret;
	65
	66	ret = ethnl_parse_header_dev_get(&req_info,
	67	tb[ETHTOOL_A_CABLE_TEST_HEADER],
	68	genl_info_net(info), info->extack,
	69	true);
	70	if (ret < 0)
	71	return ret;
	72
	73	dev = req_info.dev;
	74	if (!dev->phydev) {
	75	ret = -EOPNOTSUPP;
	76	goto out_dev_put;
	77	}
	78
	79	rtnl_lock();
	80	ret = ethnl_ops_begin(dev);
	81	if (ret < 0)
	82	goto out_rtnl;
	83
	84	ret = phy_start_cable_test(dev->phydev, info->extack);
	85
	86	ethnl_ops_complete(dev);
9896a457 AL	87
9896a457 AL	88	if (!ret)
1a644de2 AL	89	ethnl_cable_test_started(dev->phydev,
1a644de2 AL	90	ETHTOOL_MSG_CABLE_TEST_NTF);
9896a457	91
11ca3c42 AL	92	out_rtnl:
	93	rtnl_unlock();
	94	out_dev_put:
	95	dev_put(dev);
	96	return ret;
	97	}
1dd3f212	98
1a644de2	99	int ethnl_cable_test_alloc(struct phy_device *phydev, u8 cmd)
1dd3f212 AL	100	{
	101	int err = -ENOMEM;
	102
	103	phydev->skb = genlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
	104	if (!phydev->skb)
	105	goto out;
	106
1a644de2	107	phydev->ehdr = ethnl_bcastmsg_put(phydev->skb, cmd);
1dd3f212 AL	108	if (!phydev->ehdr) {
	109	err = -EMSGSIZE;
	110	goto out;
	111	}
	112
	113	err = ethnl_fill_reply_header(phydev->skb, phydev->attached_dev,
	114	ETHTOOL_A_CABLE_TEST_NTF_HEADER);
	115	if (err)
	116	goto out;
	117
	118	err = nla_put_u8(phydev->skb, ETHTOOL_A_CABLE_TEST_NTF_STATUS,
	119	ETHTOOL_A_CABLE_TEST_NTF_STATUS_COMPLETED);
	120	if (err)
	121	goto out;
	122
	123	phydev->nest = nla_nest_start(phydev->skb,
	124	ETHTOOL_A_CABLE_TEST_NTF_NEST);
1e2dc145 AL	125	if (!phydev->nest) {
1e2dc145 AL	126	err = -EMSGSIZE;
1dd3f212	127	goto out;
1e2dc145	128	}
1dd3f212 AL	129
	130	return 0;
	131
	132	out:
	133	nlmsg_free(phydev->skb);
1e2dc145	134	phydev->skb = NULL;
1dd3f212 AL	135	return err;
	136	}
	137	EXPORT_SYMBOL_GPL(ethnl_cable_test_alloc);
	138
	139	void ethnl_cable_test_free(struct phy_device *phydev)
	140	{
	141	nlmsg_free(phydev->skb);
1e2dc145	142	phydev->skb = NULL;
1dd3f212 AL	143	}
	144	EXPORT_SYMBOL_GPL(ethnl_cable_test_free);
	145
	146	void ethnl_cable_test_finished(struct phy_device *phydev)
	147	{
	148	nla_nest_end(phydev->skb, phydev->nest);
	149
	150	genlmsg_end(phydev->skb, phydev->ehdr);
	151
	152	ethnl_multicast(phydev->skb, phydev->attached_dev);
	153	}
	154	EXPORT_SYMBOL_GPL(ethnl_cable_test_finished);
1e2dc145 AL	155
	156	int ethnl_cable_test_result(struct phy_device *phydev, u8 pair, u8 result)
	157	{
	158	struct nlattr *nest;
	159	int ret = -EMSGSIZE;
	160
	161	nest = nla_nest_start(phydev->skb, ETHTOOL_A_CABLE_NEST_RESULT);
	162	if (!nest)
	163	return -EMSGSIZE;
	164
	165	if (nla_put_u8(phydev->skb, ETHTOOL_A_CABLE_RESULT_PAIR, pair))
	166	goto err;
	167	if (nla_put_u8(phydev->skb, ETHTOOL_A_CABLE_RESULT_CODE, result))
	168	goto err;
	169
	170	nla_nest_end(phydev->skb, nest);
	171	return 0;
	172
	173	err:
	174	nla_nest_cancel(phydev->skb, nest);
	175	return ret;
	176	}
	177	EXPORT_SYMBOL_GPL(ethnl_cable_test_result);
	178
	179	int ethnl_cable_test_fault_length(struct phy_device *phydev, u8 pair, u32 cm)
	180	{
	181	struct nlattr *nest;
	182	int ret = -EMSGSIZE;
	183
	184	nest = nla_nest_start(phydev->skb,
	185	ETHTOOL_A_CABLE_NEST_FAULT_LENGTH);
	186	if (!nest)
	187	return -EMSGSIZE;
	188
	189	if (nla_put_u8(phydev->skb, ETHTOOL_A_CABLE_FAULT_LENGTH_PAIR, pair))
	190	goto err;
	191	if (nla_put_u32(phydev->skb, ETHTOOL_A_CABLE_FAULT_LENGTH_CM, cm))
	192	goto err;
	193
	194	nla_nest_end(phydev->skb, nest);
	195	return 0;
	196
	197	err:
	198	nla_nest_cancel(phydev->skb, nest);
	199	return ret;
	200	}
	201	EXPORT_SYMBOL_GPL(ethnl_cable_test_fault_length);
1a644de2 AL	202
	203	static const struct nla_policy
	204	cable_test_tdr_act_policy[ETHTOOL_A_CABLE_TEST_TDR_MAX + 1] = {
	205	[ETHTOOL_A_CABLE_TEST_TDR_UNSPEC] = { .type = NLA_REJECT },
	206	[ETHTOOL_A_CABLE_TEST_TDR_HEADER] = { .type = NLA_NESTED },
	207	};
	208
	209	int ethnl_act_cable_test_tdr(struct sk_buff skb, struct genl_info info)
	210	{
	211	struct nlattr *tb[ETHTOOL_A_CABLE_TEST_TDR_MAX + 1];
	212	struct ethnl_req_info req_info = {};
	213	struct net_device *dev;
	214	int ret;
	215
	216	ret = nlmsg_parse(info->nlhdr, GENL_HDRLEN, tb,
	217	ETHTOOL_A_CABLE_TEST_TDR_MAX,
	218	cable_test_tdr_act_policy, info->extack);
	219	if (ret < 0)
	220	return ret;
	221
	222	ret = ethnl_parse_header_dev_get(&req_info,
	223	tb[ETHTOOL_A_CABLE_TEST_TDR_HEADER],
	224	genl_info_net(info), info->extack,
	225	true);
	226	if (ret < 0)
	227	return ret;
	228
	229	dev = req_info.dev;
	230	if (!dev->phydev) {
	231	ret = -EOPNOTSUPP;
	232	goto out_dev_put;
	233	}
	234
	235	rtnl_lock();
	236	ret = ethnl_ops_begin(dev);
	237	if (ret < 0)
	238	goto out_rtnl;
	239
	240	ret = phy_start_cable_test_tdr(dev->phydev, info->extack);
	241
	242	ethnl_ops_complete(dev);
	243
	244	if (!ret)
	245	ethnl_cable_test_started(dev->phydev,
	246	ETHTOOL_MSG_CABLE_TEST_TDR_NTF);
	247
	248	out_rtnl:
	249	rtnl_unlock();
	250	out_dev_put:
	251	dev_put(dev);
	252	return ret;
	253	}