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Date: Thu, 20 Oct 2022 17:20:03 +0200
From: Petr Machata <petrm@...dia.com>
To: "David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>, <netdev@...r.kernel.org>
CC: Jay Vosburgh <j.vosburgh@...il.com>,
Veaceslav Falico <vfalico@...il.com>,
Andy Gospodarek <andy@...yhouse.net>,
Ido Schimmel <idosch@...dia.com>,
"Petr Machata" <petrm@...dia.com>, Amit Cohen <amcohen@...dia.com>,
Andrew Lunn <andrew@...n.ch>,
Heiner Kallweit <hkallweit1@...il.com>,
Russell King <linux@...linux.org.uk>,
David Ahern <dsahern@...nel.org>, <mlxsw@...dia.com>
Subject: [PATCH net-next 1/3] ethtool: Add support for 800Gbps link modes
From: Amit Cohen <amcohen@...dia.com>
Add support for 800Gbps speed, link modes of 100Gbps per lane.
As mentioned in slide 21 in IEEE documentation [1], all adopted 802.3df
copper and optical PMDs baselines using 100G/lane will be supported.
Add the relevant PMDs which are mentioned in slide 5 in IEEE
documentation [1] and were approved on 10-2022 [2]:
BP - KR8
Cu Cable - CR8
MMF 50m - VR8
MMF 100m - SR8
SMF 500m - DR8
SMF 2km - DR8-2
[1]: https://www.ieee802.org/3/df/public/22_10/22_1004/shrikhande_3df_01a_221004.pdf
[2]: https://ieee802.org/3/df/KeyMotions_3df_221005.pdf
Signed-off-by: Amit Cohen <amcohen@...dia.com>
Reviewed-by: Ido Schimmel <idosch@...dia.com>
Signed-off-by: Petr Machata <petrm@...dia.com>
---
drivers/net/phy/phy-core.c | 11 ++++++++++-
include/uapi/linux/ethtool.h | 8 ++++++++
net/ethtool/common.c | 14 ++++++++++++++
3 files changed, 32 insertions(+), 1 deletion(-)
diff --git a/drivers/net/phy/phy-core.c b/drivers/net/phy/phy-core.c
index 2c8bf438ea61..5d08c627a516 100644
--- a/drivers/net/phy/phy-core.c
+++ b/drivers/net/phy/phy-core.c
@@ -13,7 +13,7 @@
*/
const char *phy_speed_to_str(int speed)
{
- BUILD_BUG_ON_MSG(__ETHTOOL_LINK_MODE_MASK_NBITS != 93,
+ BUILD_BUG_ON_MSG(__ETHTOOL_LINK_MODE_MASK_NBITS != 99,
"Enum ethtool_link_mode_bit_indices and phylib are out of sync. "
"If a speed or mode has been added please update phy_speed_to_str "
"and the PHY settings array.\n");
@@ -49,6 +49,8 @@ const char *phy_speed_to_str(int speed)
return "200Gbps";
case SPEED_400000:
return "400Gbps";
+ case SPEED_800000:
+ return "800Gbps";
case SPEED_UNKNOWN:
return "Unknown";
default:
@@ -157,6 +159,13 @@ EXPORT_SYMBOL_GPL(phy_interface_num_ports);
.bit = ETHTOOL_LINK_MODE_ ## b ## _BIT}
static const struct phy_setting settings[] = {
+ /* 800G */
+ PHY_SETTING( 800000, FULL, 800000baseCR8_Full ),
+ PHY_SETTING( 800000, FULL, 800000baseKR8_Full ),
+ PHY_SETTING( 800000, FULL, 800000baseDR8_Full ),
+ PHY_SETTING( 800000, FULL, 800000baseDR8_2_Full ),
+ PHY_SETTING( 800000, FULL, 800000baseSR8_Full ),
+ PHY_SETTING( 800000, FULL, 800000baseVR8_Full ),
/* 400G */
PHY_SETTING( 400000, FULL, 400000baseCR8_Full ),
PHY_SETTING( 400000, FULL, 400000baseKR8_Full ),
diff --git a/include/uapi/linux/ethtool.h b/include/uapi/linux/ethtool.h
index dc2aa3d75b39..f341de2ae612 100644
--- a/include/uapi/linux/ethtool.h
+++ b/include/uapi/linux/ethtool.h
@@ -1737,6 +1737,13 @@ enum ethtool_link_mode_bit_indices {
ETHTOOL_LINK_MODE_100baseFX_Half_BIT = 90,
ETHTOOL_LINK_MODE_100baseFX_Full_BIT = 91,
ETHTOOL_LINK_MODE_10baseT1L_Full_BIT = 92,
+ ETHTOOL_LINK_MODE_800000baseCR8_Full_BIT = 93,
+ ETHTOOL_LINK_MODE_800000baseKR8_Full_BIT = 94,
+ ETHTOOL_LINK_MODE_800000baseDR8_Full_BIT = 95,
+ ETHTOOL_LINK_MODE_800000baseDR8_2_Full_BIT = 96,
+ ETHTOOL_LINK_MODE_800000baseSR8_Full_BIT = 97,
+ ETHTOOL_LINK_MODE_800000baseVR8_Full_BIT = 98,
+
/* must be last entry */
__ETHTOOL_LINK_MODE_MASK_NBITS
};
@@ -1848,6 +1855,7 @@ enum ethtool_link_mode_bit_indices {
#define SPEED_100000 100000
#define SPEED_200000 200000
#define SPEED_400000 400000
+#define SPEED_800000 800000
#define SPEED_UNKNOWN -1
diff --git a/net/ethtool/common.c b/net/ethtool/common.c
index 566adf85e658..ee3e02da0013 100644
--- a/net/ethtool/common.c
+++ b/net/ethtool/common.c
@@ -202,6 +202,12 @@ const char link_mode_names[][ETH_GSTRING_LEN] = {
__DEFINE_LINK_MODE_NAME(100, FX, Half),
__DEFINE_LINK_MODE_NAME(100, FX, Full),
__DEFINE_LINK_MODE_NAME(10, T1L, Full),
+ __DEFINE_LINK_MODE_NAME(800000, CR8, Full),
+ __DEFINE_LINK_MODE_NAME(800000, KR8, Full),
+ __DEFINE_LINK_MODE_NAME(800000, DR8, Full),
+ __DEFINE_LINK_MODE_NAME(800000, DR8_2, Full),
+ __DEFINE_LINK_MODE_NAME(800000, SR8, Full),
+ __DEFINE_LINK_MODE_NAME(800000, VR8, Full),
};
static_assert(ARRAY_SIZE(link_mode_names) == __ETHTOOL_LINK_MODE_MASK_NBITS);
@@ -238,6 +244,8 @@ static_assert(ARRAY_SIZE(link_mode_names) == __ETHTOOL_LINK_MODE_MASK_NBITS);
#define __LINK_MODE_LANES_X 1
#define __LINK_MODE_LANES_FX 1
#define __LINK_MODE_LANES_T1L 1
+#define __LINK_MODE_LANES_VR8 8
+#define __LINK_MODE_LANES_DR8_2 8
#define __DEFINE_LINK_MODE_PARAMS(_speed, _type, _duplex) \
[ETHTOOL_LINK_MODE(_speed, _type, _duplex)] = { \
@@ -352,6 +360,12 @@ const struct link_mode_info link_mode_params[] = {
__DEFINE_LINK_MODE_PARAMS(100, FX, Half),
__DEFINE_LINK_MODE_PARAMS(100, FX, Full),
__DEFINE_LINK_MODE_PARAMS(10, T1L, Full),
+ __DEFINE_LINK_MODE_PARAMS(800000, CR8, Full),
+ __DEFINE_LINK_MODE_PARAMS(800000, KR8, Full),
+ __DEFINE_LINK_MODE_PARAMS(800000, DR8, Full),
+ __DEFINE_LINK_MODE_PARAMS(800000, DR8_2, Full),
+ __DEFINE_LINK_MODE_PARAMS(800000, SR8, Full),
+ __DEFINE_LINK_MODE_PARAMS(800000, VR8, Full),
};
static_assert(ARRAY_SIZE(link_mode_params) == __ETHTOOL_LINK_MODE_MASK_NBITS);
--
2.35.3
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