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net: ethtool: Add generic parts of cable test TDR

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Add the generic parts of the code used to trigger a cable test and
return raw TDR data. Any PHY driver which support this must implement
the new driver op.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>

v2
Update nxp-tja11xx for API change.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andrew Lunn
2020-05-27 00:21:38 +02:00
committed by David S. Miller
parent a331172b15
commit 1a644de29f
7 changed files with 144 additions and 10 deletions
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64
net/ethtool/cabletest.c
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@@ -13,7 +13,7 @@ cable_test_act_policy[ETHTOOL_A_CABLE_TEST_MAX + 1] = {
[ETHTOOL_A_CABLE_TEST_HEADER] = { .type = NLA_NESTED },
};
static int ethnl_cable_test_started(struct phy_device *phydev)
static int ethnl_cable_test_started(struct phy_device *phydev, u8 cmd)
{
struct sk_buff *skb;
int err = -ENOMEM;
@@ -23,7 +23,7 @@ static int ethnl_cable_test_started(struct phy_device *phydev)
if (!skb)
goto out;
ehdr = ethnl_bcastmsg_put(skb, ETHTOOL_MSG_CABLE_TEST_NTF);
ehdr = ethnl_bcastmsg_put(skb, cmd);
if (!ehdr) {
err = -EMSGSIZE;
goto out;
@@ -86,7 +86,8 @@ int ethnl_act_cable_test(struct sk_buff *skb, struct genl_info *info)
ethnl_ops_complete(dev);
if (!ret)
ethnl_cable_test_started(dev->phydev);
ethnl_cable_test_started(dev->phydev,
ETHTOOL_MSG_CABLE_TEST_NTF);
out_rtnl:
rtnl_unlock();
@@ -95,7 +96,7 @@ out_dev_put:
return ret;
}
int ethnl_cable_test_alloc(struct phy_device *phydev)
int ethnl_cable_test_alloc(struct phy_device *phydev, u8 cmd)
{
int err = -ENOMEM;
@@ -103,8 +104,7 @@ int ethnl_cable_test_alloc(struct phy_device *phydev)
if (!phydev->skb)
goto out;
phydev->ehdr = ethnl_bcastmsg_put(phydev->skb,
ETHTOOL_MSG_CABLE_TEST_NTF);
phydev->ehdr = ethnl_bcastmsg_put(phydev->skb, cmd);
if (!phydev->ehdr) {
err = -EMSGSIZE;
goto out;
@@ -199,3 +199,55 @@ err:
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;
}