phy_resolve_aneg_linkmode(9)

💅 phy_resolve_aneg_linkmode(9) — from the Kernel API Manual, bestie 🎀

okay so like, imagine your PHY and its link partner are two besties in a group chat, right? And they're both dropping hints about what speed and duplex they can do. This little function is the one that actually reads the group chat and turns all those advertisements into real, usable PHY settings. Iconic behavior, honestly. ✨

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✨ SYNOPSIS ✨

void phy_resolve_aneg_linkmode (struct phy_device *phydev );

bestie it takes exactly one thing and returns literally nothing (void, she's a doer not a talker 💅).

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🌸 ARGUMENTS 🌸

• phydev — the struct phy_device. that's it. that's the whole argument. she's the phy_device struct, the main character of this whole operation 👑

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🦋 DESCRIPTION 🦋

So here's the tea ☕: this function takes our advertisements and the link partner's advertisements and resolves them into their corresponding speed and duplex. Like, it figures out what the two of you actually agreed on. No cap. 🔥

And if full duplex was negotiated? Then it goes ahead and extracts the pause mode from the link partner mask. Yes bestie, the pause mode comes straight outta the link partner mask — that's the vibe. 💖

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👑 SEE ALSO 👑

okay so if you're going down the rabbit hole (and you know you are, iykyk 🐇), here's the whole squad. All of these live in the kernel file ./drivers/net/phy/phy-core.c:

• phy_speed_to_str(9)
• phy_duplex_to_str(9)
• phy_rate_matching_to_str(9)
• phy_fix_phy_mode_for_mac_delays(9)
• phy_interface_num_ports(9)
• phy_set_max_speed(9)
• of_set_phy_timing_role(9)
• phy_resolve_aneg_pause(9)
• phy_check_downshift(9)
• __phy_read_mmd(9)
• phy_read_mmd(9)
• __phy_write_mmd(9)
• phy_write_mmd(9)
• phy_modify_changed(9)
• __phy_modify(9)
• phy_modify(9)
• __phy_modify_mmd_changed(9)
• phy_modify_mmd_changed(9)
• __phy_modify_mmd(9)
• phy_modify_mmd(9)
• phy_save_page(9)
• phy_select_page(9)
• phy_restore_page(9)
• phy_read_paged(9)
• phy_write_paged(9)
• phy_modify_paged_changed(9)
• phy_modify_paged(9)

like, the whole friend group showed up to the party 🫶 and yes the list is long, but every single one of them earned their spot.

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ngl, nothing in here is dangerous — she just reads the advertisements and resolves them. Chill. Bug-free vibes only. 💀✨

and that's the page bestie!! 🌈 this absolute gem comes to you from the ./drivers/net/phy source, from way out in October 2026, and it's filed under the Kernel API Manual as phy_resolve_aneg_linkmode(9). mwah 💋 go forth and resolve those advertisements 🦋💜