phylink_validate_mask_caps(9)

💅 phylink_validate_mask_caps(9) 💅

okay so bestie, welcome to the Kernel API Manual 💖 — this page is all about phylink_validate_mask_caps, aka the “restrict link modes based on caps” function. No cap, it’s giving very specific kernel energy.

🌸 NAME 🌸

phylink_validate_mask_caps — Restrict link modes based on caps ✨

✨ SYNOPSIS ✨

bestie, here’s the exact signature — do not @ me, just copy it carefully:

void phylink_validate_mask_caps (unsigned long *supported , struct
       phylink_link_state *state , unsigned long mac_capabilities );

🎀 ARGUMENTS 🎀

• supported — ethtool bitmask for supported link modes. 💅
• state — pointer to a struct phylink_link_state. 🫶
• mac_capabilities — bitmask of MAC capabilities. 🔥

💖 DESCRIPTION 💖

Okay so what it does: it calculates the supported link modes based on mac_capabilities, and then restricts supported and state based on that. Slay. ✨

Use this function if your capabilities aren’t constant — like when they vary depending on the interface. That’s the whole vibe check: not a fixed set of caps, so the supported link modes need that little adjustment. 🦋

🦋 SEE ALSO 🦋

the whole phylink extended universe, periodt:

• 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_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_decode_usgmii_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)

okay bestie, that’s the page 💖 source/version: ./drivers/net/phy · date: October 2026 · page: phylink_validate_mask_caps(9). periodt 🎀