• Fixed a TX buffer cleanup size mismatch in igc_free_tx_resources.
• Corrected full-duplex / half-duplex detection for 10M and 100M links.
• Improved RX error handling to safely recover from packet buffer copy failures.
• Fixed pointer-width atomic compare-and-swap in createWorkLoop.
• Refined link state handling, including link up/down transitions and watchdog behavior.
• Added extra safety checks in the transmit path.
• Improved suspend/resume handling.