[PATCH net-next v2 10/10] net: phy: Send notifier when starting the cable test

[Andrew Lunn]

Given that it takes time to run a cable test, send a notify message at
the start, as well as when it is completed.

Signed-off-by: Andrew Lunn <and...@lunn.ch>
---
 net/ethtool/cabletest.c | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/net/ethtool/cabletest.c b/net/ethtool/cabletest.c
index f500454a54eb..e59f570494c0 100644
--- a/net/ethtool/cabletest.c
+++ b/net/ethtool/cabletest.c
@@ -20,6 +20,41 @@ 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)
+{
+       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, ETHTOOL_MSG_CABLE_TEST_NTF);
+       if (!ehdr) {
+               err = -EINVAL;
+               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);
+       return err;
+}
+
 int ethnl_act_cable_test(struct sk_buff *skb, struct genl_info *info)
 {
        struct nlattr *tb[ETHTOOL_A_CABLE_TEST_MAX + 1];
@@ -54,6 +89,10 @@ int ethnl_act_cable_test(struct sk_buff *skb, struct 
genl_info *info)
        ret = phy_start_cable_test(dev->phydev, info->extack);
 
        ethnl_ops_complete(dev);
+
+       if (!ret)
+               ethnl_cable_test_started(dev->phydev);
+
 out_rtnl:
        rtnl_unlock();
 out_dev_put:
-- 
2.26.2