e1000_fix_nv...ecksum_82571(9)

💖 NAME 💖

e1000_fix_nvm_checksum_82571 — bestie, this is the one that fixes the EEPROM checksum ✨ and it lives in the Kernel API Manual (yes, that's the manual name, we're fancy here 💅).

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🌸 SYNOPSIS 🌸

s32 e1000_fix_nvm_checksum_82571 (struct e1000_hw *hw );

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🎀 ARGUMENTS 🎀

• hw — pointer to the HW structure 🫶 that's it, that's the whole vibe. One (1) argument. Iconic.

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🦋 DESCRIPTION 🦋

Okay so here's the tea ☕ — this function verifies that the EEPROM has completed the update. Like, it's doing a vibe check on whether the EEPROM actually finished what it was supposed to do 👑

After updating the EEPROM, we need to check bit 15 in work 0x23 for the checksum fix. Yes, work 0x23, that's literally what the page says, I'm not touching it 😭.

So here's the branching logic, bestie, follow along:

1. If the checksum fix is not implemented, we need to set the bit and update the checksum. Slay, we fixed it 💅✨
2. Otherwise, if bit 15 is set and the checksum is incorrect, we need to return bad checksum. Not the ending we wanted, but that's the rules 😔 🔥

No cap, those are the only two outcomes laid out here — no extra lore, no bonus behaviour, I'm not making anything up 🙈

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👑 SEE ALSO 👑

Kernel file ./drivers/net/ethernet/intel/e1000e/82571.c — that's the actual home of this function, go visit her 🏡

The full 82571/82573/82574 family reunion, in the order the page gives them:

• e1000_init_phy_params_82571(9)
• e1000_init_nvm_params_82571(9)
• e1000_init_mac_params_82571(9)
• e1000_get_phy_id_82571(9)
• e1000_get_hw_semaphore_82571(9)
• e1000_put_hw_semaphore_82571(9)
• e1000_get_hw_semaphore_82573(9)
• e1000_put_hw_semaphore_82573(9)
• e1000_get_hw_semaphore_82574(9)
• e1000_put_hw_semaphore_82574(9)
• e1000_set_d0_lplu_state_82574(9)
• e1000_set_d3_lplu_state_82574(9)
• e1000_acquire_nvm_82571(9)
• e1000_release_nvm_82571(9)
• e1000_write_nvm_82571(9)
• e1000_update_nvm_checksum_82571(9)
• e1000_validate_nvm_checksum_82571(9)
• e1000_write_nvm_eewr_82571(9)
• e1000_get_cfg_done_82571(9)
• e1000_set_d0_lplu_state_82571(9)
• e1000_reset_hw_82571(9)
• e1000_init_hw_82571(9)
• e1000_initialize_hw_bits_82571(9)
• e1000_clear_vfta_82571(9)
• e1000_check_mng_mode_82574(9)
• e1000_led_on_82574(9)
• e1000_check_phy_82574(9)
• e1000_setup_link_82571(9)
• e1000_setup_copper_link_82571(9)
• e1000_setup_fiber_serdes_link_82571(9)
• e1000_check_for_serdes_link_82571(9)
• e1000_valid_led_default_82571(9)
• e1000e_get_laa_state_82571(9)
• e1000e_set_laa_state_82571(9)
• e1000_read_mac_addr_82571(9)
• e1000_power_down_phy_copper_82571(9)
• e1000_clear_hw_cntrs_82571(9)

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✨ and that's the whole page, bestie ✨ This lil blessing of a manual page comes from source ./drivers/net/ethernet/intel/e... (yes, it's truncated like that, I don't make the rules 😭) and it's dated October 2026 — so mark your calendars, she's from the future 🦋💜. Anyway, mwah, go fix that checksum 💅🎀