linux-kernel - [RFC net-next 2/5] net: ethtool: Add UAPI for PHY test modes

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Date:   Fri, 27 Apr 2018 17:32:32 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     netdev@...r.kernel.org
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Russell King <rmk@...linux.org.uk>,
        linux-kernel@...r.kernel.org (open list), davem@...emloft.net,
        cphealy@...il.com, nikita.yoush@...entembedded.com,
        vivien.didelot@...oirfairelinux.com, Nisar.Sayed@...rochip.com,
        UNGLinuxDriver@...rochip.com
Subject: [RFC net-next 2/5] net: ethtool: Add UAPI for PHY test modes

Add the necessary UAPI changes to support querying the PHY tests modes
implemented and optionally associated test specific data. This will be
used as the foundation for supporting:

- IEEE standard electrical test modes
- cable diagnostics
- packet tester

Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
---
 include/uapi/linux/ethtool.h | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/include/uapi/linux/ethtool.h b/include/uapi/linux/ethtool.h
index 4ca65b56084f..a8befecfe853 100644
--- a/include/uapi/linux/ethtool.h
+++ b/include/uapi/linux/ethtool.h
@@ -567,6 +567,7 @@ struct ethtool_pauseparam {
  * @ETH_SS_RSS_HASH_FUNCS: RSS hush function names
  * @ETH_SS_PHY_STATS: Statistic names, for use with %ETHTOOL_GPHYSTATS
  * @ETH_SS_PHY_TUNABLES: PHY tunable names
+ * @ETH_SS_PHY_TESTS: PHY tests, for use with %ETHTOOL_GPHYTEST
  */
 enum ethtool_stringset {
 	ETH_SS_TEST		= 0,
@@ -578,6 +579,7 @@ enum ethtool_stringset {
 	ETH_SS_TUNABLES,
 	ETH_SS_PHY_STATS,
 	ETH_SS_PHY_TUNABLES,
+	ETH_SS_PHY_TESTS,
 };
 
 /**
@@ -1296,6 +1298,25 @@ enum ethtool_fec_config_bits {
 	ETHTOOL_FEC_BASER_BIT,
 };
 
+/**
+ * struct ethtool_phy_test - Ethernet PHY test mode
+ * @cmd: Command number = %ETHTOOL_GPHYTEST or %ETHTOOL_SPHYTEST
+ * @flags: A bitmask of flags from &enum ethtool_test_flags.  Some
+ *	flags may be set by the user on entry; others may be set by
+ *	the driver on return.
+ * @mode: PHY test mode to enter. The index should be a valid test mode
+ * obtained through ethtool_get_strings with %ETH_SS_PHY_TESTS
+ * @len: The length of the test specific array @data
+ * @data: Array of test specific results to be interpreted with @mode
+ */
+struct ethtool_phy_test {
+	__u32	cmd;
+	__u32	flags;
+	__u32	mode;
+	__u32	len;
+	__u8 	data[0];
+};
+
 #define ETHTOOL_FEC_NONE		(1 << ETHTOOL_FEC_NONE_BIT)
 #define ETHTOOL_FEC_AUTO		(1 << ETHTOOL_FEC_AUTO_BIT)
 #define ETHTOOL_FEC_OFF			(1 << ETHTOOL_FEC_OFF_BIT)
@@ -1396,6 +1417,8 @@ enum ethtool_fec_config_bits {
 #define ETHTOOL_PHY_STUNABLE	0x0000004f /* Set PHY tunable configuration */
 #define ETHTOOL_GFECPARAM	0x00000050 /* Get FEC settings */
 #define ETHTOOL_SFECPARAM	0x00000051 /* Set FEC settings */
+#define ETHTOOL_GPHYTEST	0x00000052 /* Get PHY test mode(s) */
+#define ETHTOOL_SPHYTEST	0x00000053 /* Set PHY test mode */
 
 /* compatibility with older code */
 #define SPARC_ETH_GSET		ETHTOOL_GSET
-- 
2.14.1