Commit f623e597 authored by Aya Levin's avatar Aya Levin Committed by Saeed Mahameed
Browse files

ethtool: Add support for low latency RS FEC 



Add support for low latency Reed Solomon FEC as LLRS.

The LL-FEC is defined by the 25G/50G ethernet consortium,
in the document titled "Low Latency Reed Solomon Forward Error Correction"

Signed-off-by: default avatarAya Levin <ayal@mellanox.com>
Reviewed-by: default avatarEran Ben Elisha <eranbe@mellanox.com>
CC: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
Reviewed-by: default avatarAndrew Lunn <andrew@lunn.ch>
parent 3c19208e

drivers/net/phy/phy-core.c

+1 −1
Original line number Diff line number Diff line
@@ -8,7 +8,7 @@ 


const char *phy_speed_to_str(int speed)

{

	BUILD_BUG_ON_MSG(__ETHTOOL_LINK_MODE_MASK_NBITS != 74,

	BUILD_BUG_ON_MSG(__ETHTOOL_LINK_MODE_MASK_NBITS != 75,

		"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");

include/uapi/linux/ethtool.h

+3 −1
Original line number Diff line number Diff line
@@ -1330,6 +1330,7 @@ enum ethtool_fec_config_bits { 
	ETHTOOL_FEC_OFF_BIT,

	ETHTOOL_FEC_RS_BIT,

	ETHTOOL_FEC_BASER_BIT,

	ETHTOOL_FEC_LLRS_BIT,

};



#define ETHTOOL_FEC_NONE		(1 << ETHTOOL_FEC_NONE_BIT)
@@ -1337,6 +1338,7 @@ enum ethtool_fec_config_bits { 
#define ETHTOOL_FEC_OFF			(1 << ETHTOOL_FEC_OFF_BIT)

#define ETHTOOL_FEC_RS			(1 << ETHTOOL_FEC_RS_BIT)

#define ETHTOOL_FEC_BASER		(1 << ETHTOOL_FEC_BASER_BIT)

#define ETHTOOL_FEC_LLRS		(1 << ETHTOOL_FEC_LLRS_BIT)



/* CMDs currently supported */

#define ETHTOOL_GSET		0x00000001 /* DEPRECATED, Get settings.
@@ -1521,7 +1523,7 @@ enum ethtool_link_mode_bit_indices { 
	ETHTOOL_LINK_MODE_400000baseLR8_ER8_FR8_Full_BIT = 71,

	ETHTOOL_LINK_MODE_400000baseDR8_Full_BIT	 = 72,

	ETHTOOL_LINK_MODE_400000baseCR8_Full_BIT	 = 73,



	ETHTOOL_LINK_MODE_FEC_LLRS_BIT			 = 74,

	/* must be last entry */

	__ETHTOOL_LINK_MODE_MASK_NBITS

};

net/ethtool/common.c

+1 −0
Original line number Diff line number Diff line
@@ -168,6 +168,7 @@ const char link_mode_names[][ETH_GSTRING_LEN] = { 
	__DEFINE_LINK_MODE_NAME(400000, LR8_ER8_FR8, Full),

	__DEFINE_LINK_MODE_NAME(400000, DR8, Full),

	__DEFINE_LINK_MODE_NAME(400000, CR8, Full),

	__DEFINE_SPECIAL_MODE_NAME(FEC_LLRS, "LLRS"),

};

static_assert(ARRAY_SIZE(link_mode_names) == __ETHTOOL_LINK_MODE_MASK_NBITS);

net/ethtool/linkmodes.c

+1 −0
Original line number Diff line number Diff line
@@ -237,6 +237,7 @@ static const struct link_mode_info link_mode_params[] = { 
	__DEFINE_LINK_MODE_PARAMS(400000, LR8_ER8_FR8, Full),

	__DEFINE_LINK_MODE_PARAMS(400000, DR8, Full),

	__DEFINE_LINK_MODE_PARAMS(400000, CR8, Full),

	__DEFINE_SPECIAL_MODE_PARAMS(FEC_LLRS),

};



static const struct nla_policy

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