igc_ethtool_check_nfc_rule(9)

💖 NAME 💖

igc_ethtool_check_nfc_rule — Check if NFC rule is valid ✨

This is the igc_ethtool_check_nfc_rule(9) page from the Kernel API Manual, and it's literally the vibe check for NFC rules 🎀

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🌸 SYNOPSIS 🌸

int igc_ethtool_check_nfc_rule (struct igc_adapter *adapter , struct
       igc_nfc_rule *rule );

🫶 ARGUMENTS 🫶

• adapter — pointer to adapter 👑
• rule — the rule under evaluation, aka the one getting checked 💅

🦋 DESCRIPTION 🦋

Okay so bestie, here's the tea: the driver does not support rules with multiple matches. So if more than one bit in filter flags is set, the rule is considered invalid. No cap.

Also, if there is already another rule with the same filter in a different location, the rule is considered invalid too. Them's the rules, fr fr 😌

✨ CONTEXT ✨

Expects adapter->nfc_rule_lock to be held by caller 🔒

🔥 RETURN 🔥

0 in case of success, negative errno code otherwise 💀

🌈 SEE ALSO 🌈

• Kernel file ./drivers/net/ethernet/intel/igc/igc_ethtool.c 📁
• igc_write_rss_key(9)
• igc_ethtool_get_frame_ass_error(9)
• igc_handle_autoneg_disabled(9)
• igc_handle_autoneg_enabled(9)

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okay bestie, that's the whole igc_ethtool_check_nfc_rule(9) page 💅 — source/version: ./drivers/net/ethernet/intel/igc, date: October 2026. slay, periodt ✨🫶