igc_setup_copper_link(9)

💖 igc_setup_copper_link 💖

okay so bestie, welcome to the glow-up era of igc_setup_copper_link — it's a kernel API manual page (section 9, iykyk) and it's literally the function that gets your copper link all sorted out. main character energy only ✨

---

🌸 NAME 🌸

igc_setup_copper_link — configure copper link settings 🎀

---

🦋 SYNOPSIS 🦋

s32 igc_setup_copper_link (struct igc_hw *hw );

---

💅 ARGUMENTS 💅

• hw — pointer to the HW structure 🫶 (yes that's the whole thing, she's simple like that)

---

⭐ DESCRIPTION ⭐

so here's the vibe: this function calls the appropriate function to configure the link for auto-neg or forced speed and duplex. pick your fighter, she supports both 💁‍♀️

then we check for link. and like — once link is established, the calls to configure collision distance and flow control get called. slay 💖

but if link is not established? we return -IGC_ERR_PHY (-2). no link, no vibes, no cap 😭

lowkey important bestie: that return value is -IGC_ERR_PHY, which is -2. remember it for the exam 🍓

---

🔥 SEE ALSO 🔥

the kernel file in question, the source of truth, the origin story:

• ./drivers/net/ethernet/intel/igc/igc_phy.c

and now the whole friend group, all of them, no one left behind 👑:

• igc_check_reset_block(9)
• igc_get_phy_id(9)
• igc_phy_has_link(9)
• igc_power_up_phy_copper(9)
• igc_power_down_phy_copper(9)
• igc_check_downshift(9)
• igc_phy_hw_reset(9)
• igc_phy_setup_autoneg(9)
• igc_wait_autoneg(9)
• igc_copper_link_autoneg(9)
• igc_read_phy_reg_mdic(9)
• igc_write_phy_reg_mdic(9)
• __igc_access_xmdio_reg(9)
• igc_read_xmdio_reg(9)
• igc_write_xmdio_reg(9)
• igc_write_phy_reg_gpy(9)
• igc_read_phy_reg_gpy(9)
• igc_read_phy_fw_version(9)
• igc_force_speed_duplex(9)

---

and that's the whole page, bestie 🌈✨

this little masterpiece lives in ./drivers/net/ethernet/intel/igc, dated October 2026, and it's served fresh from the Kernel API Manual 💜 mwah, go configure some links 🧚‍♀️🎀