The kernel can now indicate if the PHY supports operating over a
fiber cable at 100Mbps either Full or Half duplex.

Signed-off-by: Dan Murphy <[email protected]>
---
 ethtool.c            | 6 ++++++
 netlink/settings.c   | 2 ++
 uapi/linux/ethtool.h | 2 ++
 3 files changed, 10 insertions(+)

diff --git a/ethtool.c b/ethtool.c
index 606af3e6b48f..84ad21467206 100644
--- a/ethtool.c
+++ b/ethtool.c
@@ -443,6 +443,8 @@ static void init_global_link_mode_masks(void)
                ETHTOOL_LINK_MODE_200000baseCR4_Full_BIT,
                ETHTOOL_LINK_MODE_100baseT1_Full_BIT,
                ETHTOOL_LINK_MODE_1000baseT1_Full_BIT,
+               ETHTOOL_LINK_MODE_100baseFX_Half_BIT,
+               ETHTOOL_LINK_MODE_100baseFX_Full_BIT,
        };
        static const enum ethtool_link_mode_bit_indices
                additional_advertised_flags_bits[] = {
@@ -639,6 +641,10 @@ static void dump_link_caps(const char *prefix, const char 
*an_prefix,
                  "200000baseDR4/Full" },
                { 0, ETHTOOL_LINK_MODE_200000baseCR4_Full_BIT,
                  "200000baseCR4/Full" },
+               { 0, ETHTOOL_LINK_MODE_100baseFX_Half_BIT,
+                 "100baseFx/Half" },
+               { 1, ETHTOOL_LINK_MODE_100baseFX_Full_BIT,
+                 "100baseFx/Full" },
        };
        int indent;
        int did1, new_line_pend;
diff --git a/netlink/settings.c b/netlink/settings.c
index 935724e799da..a11c85756ca6 100644
--- a/netlink/settings.c
+++ b/netlink/settings.c
@@ -147,6 +147,8 @@ static const struct link_mode_info link_modes[] = {
        [ETHTOOL_LINK_MODE_400000baseDR8_Full_BIT]      = __REAL(400000),
        [ETHTOOL_LINK_MODE_400000baseCR8_Full_BIT]      = __REAL(400000),
        [ETHTOOL_LINK_MODE_FEC_LLRS_BIT]                = __SPECIAL(FEC),
+       [ETHTOOL_LINK_MODE_100baseFX_Half_BIT]          = __HALF_DUPLEX(100),
+       [ETHTOOL_LINK_MODE_100baseFX_Full_BIT]          = __REAL(100),
 };
 const unsigned int link_modes_count = ARRAY_SIZE(link_modes);
 
diff --git a/uapi/linux/ethtool.h b/uapi/linux/ethtool.h
index a1cfbe2ef40f..5c58555fecb4 100644
--- a/uapi/linux/ethtool.h
+++ b/uapi/linux/ethtool.h
@@ -1598,6 +1598,8 @@ enum ethtool_link_mode_bit_indices {
        ETHTOOL_LINK_MODE_400000baseDR8_Full_BIT         = 72,
        ETHTOOL_LINK_MODE_400000baseCR8_Full_BIT         = 73,
        ETHTOOL_LINK_MODE_FEC_LLRS_BIT                   = 74,
+       ETHTOOL_LINK_MODE_100baseFX_Half_BIT             = 90,
+       ETHTOOL_LINK_MODE_100baseFX_Full_BIT             = 91,
        /* must be last entry */
        __ETHTOOL_LINK_MODE_MASK_NBITS
 };
-- 
2.28.0

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