igb_phy_forc...duplex_82580(9)

💅 igb_phy_force_speed_duplex_82580(9) 💅

okay so bestie, welcome to the Kernel API Manual ✨ — this one's a little function with main character energy. Let's get into it 🎀

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🌸 NAME 🌸

igb_phy_force_speed_duplex_82580 — literally just forces speed/duplex for the I82580 PHY, no cap 💁‍♀️

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✨ SYNOPSIS ✨

s32 igb_phy_force_speed_duplex_82580 (struct e1000_hw *hw );

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🦋 ARGUMENTS 🦋

• hw — pointer to the HW structure 🫶 (yes that's it, that's the whole vibe check)

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💖 DESCRIPTION 💖

So what does she actually do? She calls the PHY setup function to force speed and duplex. Iconic. ✨

Then she clears the auto-crossover to force MDI manually — like, manually manually, we're not letting the hardware decide today 🔥

After that she waits for link, and returns successful if link up is successful. But if it's not? It's giving -E1000_ERR_PHY (-2) 😭💀

ngl, if you see that -2 come back, the link did NOT slay. She tried tho 💅

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👑 SEE ALSO 👑

First up, the actual kernel file where this lives, for the girlies who wanna read the source 🧚:

• ./drivers/net/ethernet/intel/igb/e1000_phy.c

And then, bestie, there are a lot of cousins. Full family tree, no skips 🙈:

• igb_check_reset_block(9)
• igb_get_phy_id(9)
• igb_phy_reset_dsp(9)
• igb_read_phy_reg_mdic(9)
• igb_write_phy_reg_mdic(9)
• igb_read_phy_reg_i2c(9)
• igb_write_phy_reg_i2c(9)
• igb_read_sfp_data_byte(9)
• igb_read_phy_reg_igp(9)
• igb_write_phy_reg_igp(9)
• igb_copper_link_setup_82580(9)
• igb_copper_link_setup_m88(9)
• igb_copper_link_setup_m88_gen2(9)
• igb_copper_link_setup_igp(9)
• igb_copper_link_autoneg(9)
• igb_phy_setup_autoneg(9)
• igb_setup_copper_link(9)
• igb_phy_force_speed_duplex_igp(9)
• igb_phy_force_speed_duplex_m88(9)
• igb_phy_force_speed_duplex_setup(9)
• igb_set_d3_lplu_state(9)
• igb_check_downshift(9)
• igb_check_polarity_m88(9)
• igb_check_polarity_igp(9)
• igb_wait_autoneg(9)
• igb_phy_has_link(9)
• igb_get_cable_length_m88(9)
• igb_get_cable_length_igp_2(9)
• igb_get_phy_info_m88(9)
• igb_get_phy_info_igp(9)
• igb_phy_sw_reset(9)
• igb_phy_hw_reset(9)
• igb_phy_init_script_igp3(9)
• igb_initialize_M88E1512_phy(9)
• igb_initialize_M88E1543_phy(9)
• igb_power_up_phy_copper(9)
• igb_power_down_phy_copper(9)
• igb_check_polarity_82580(9)
• igb_get_phy_info_82580(9)
• igb_get_cable_length_82580(9)
• igb_set_master_slave_mode(9)

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and that's the whole page, bestie 🫶 go force some speed and duplex, you got this 💜

source/version: ./drivers/net/ethernet/intel/igb  •  dated October 2026 — mwah, xoxo 💋🎀

igb_phy_forc...duplex_82580(9)