phylink_decode_usgmii_word(9)

💅 phylink_decode_usgmii_word — a Kernel API Manual moment ✨

okay so bestie, welcome to the Kernel API Manual page for phylink_decode_usgmii_word(9) — yes the function name is a whole mouthful, no we're not renaming it, it's iconic as is 🎀

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✨ NAME ✨

phylink_decode_usgmii_word — decode the USGMII word from a MAC PCS 🧚

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🦋 SYNOPSIS 🦋

void phylink_decode_usgmii_word (struct phylink_link_state *state ,
uint16_t lpa );

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🌸 ARGUMENTS 🌸

• state — a pointer to a struct phylink_link_state. it's giving "here's where your results go" energy 💖
• lpa — a uint16_t value, and it stores the USGMII auto-negotiation word. sixteen bits of pure potential ngl ✨

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👑 DESCRIPTION 👑

okay so this one is a helper for MAC PCS that supports the USGMII protocol and the auto-negotiation code word — highkey a little specialist, we love a niche queen 💅

what it does: it decodes the USGMII code word and populates the corresponding fields — that's speed and duplex — into the phylink_link_state structure. so like, in they go, popped, sorted 🫶

the way the structure for this word works: it's the same as the USXGMII word, except it only supports speeds up to 1Gbps. so don't come at it expecting 10G, she said 1Gbps and she meant it 😭

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💜 SEE ALSO 💜

like the whole friend group tbh, go say hi 👋

• Kernel file ./drivers/net/phy/phylink.c
• struct phylink(9)
• phylink_set_port_modes(9)
• phylink_interface_max_speed(9)
• phylink_caps_to_link_caps(9)
• phylink_caps_to_linkmodes(9)
• phylink_limit_mac_speed(9)
• phylink_cap_from_speed_duplex(9)
• phylink_get_capabilities(9)
• phylink_validate_mask_caps(9)
• phylink_pcs_neg_mode(9)
• phylink_set_fixed_link(9)
• phylink_create(9)
• phylink_destroy(9)
• phylink_expects_phy(9)
• phylink_connect_phy(9)
• phylink_of_phy_connect(9)
• phylink_fwnode_phy_connect(9)
• phylink_disconnect_phy(9)
• phylink_mac_change(9)
• phylink_pcs_change(9)
• phylink_start(9)
• phylink_stop(9)
• phylink_rx_clk_stop_block(9)
• phylink_rx_clk_stop_unblock(9)
• phylink_suspend(9)
• phylink_prepare_resume(9)
• phylink_resume(9)
• phylink_ethtool_get_wol(9)
• phylink_ethtool_set_wol(9)
• phylink_ethtool_ksettings_get(9)
• phylink_ethtool_ksettings_set(9)
• phylink_ethtool_nway_reset(9)
• phylink_ethtool_get_pauseparam(9)
• phylink_ethtool_set_pauseparam(9)
• phylink_get_eee_err(9)
• phylink_ethtool_get_eee(9)
• phylink_ethtool_set_eee(9)
• phylink_mii_ioctl(9)
• phylink_speed_down(9)
• phylink_speed_up(9)
• phylink_decode_usxgmii_word(9)
• phylink_mii_c22_pcs_decode_state(9)
• phylink_mii_c22_pcs_get_state(9)
• phylink_mii_c22_pcs_encode_advertisement(9)
• phylink_mii_c22_pcs_config(9)
• phylink_mii_c22_pcs_an_restart(9)
• phylink_replay_link_begin(9)
• phylink_replay_link_end(9)

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💀 reminder bestie: same word structure as USXGMII, but 1Gbps max, periodt. don't @ me, @ the manpage.

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and that's the whole vibe check 🌈 this page lives in ./drivers/net/phy, dated October 2026, and it's brought to you by the Kernel API Manual — mwah, go decode some words, ily 🍓💖