ice_rx_csum(9)

💅 ice_rx_csum(9) ✨

okay so bestie, this is a page from the Kernel API Manual — it's ice_rx_csum, and it's lowkey the little function that tells the kernel whether your packet's checksum is actually valid or not. no cap, it's important. 🫶

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🌸 NAME 🌸

ice_rx_csum — literally just indicates in the skb if the checksum is good 💖

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🎀 SYNOPSIS 🎀

void ice_rx_csum (struct ice_rx_ring *ring , struct sk_buff *skb , union
ice_32b_rx_flex_desc *rx_desc , u16 ptype );

like, it returns void — nothing comes back, bestie, it just does the thing. ✨

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🦋 ARGUMENTS 🦋

• ring — the ring we care about 👑 (yes, we care, it's giving main character ring energy)
• skb — the skb that's currently being received and modified, it's mid-glow-up basically 💅
• rx_desc — the receive descriptor, the lil receipt for the packet 🧾
• ptype — the packet type that the hardware already decoded for us, slay 🔥

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🌈 DESCRIPTION 🌈

skb->protocol must be set before this function is called. periodt. 🙈

fr fr, set skb->protocol first — that's a hard requirement, not a suggestion 💀

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⭐ SEE ALSO ⭐

Kernel file ./drivers/net/ethernet/intel/ice/ice_txrx_lib.c — yeah that's where the magic lives 🪄

and the whole friend group: ice_release_rx_desc(9), ice_get_rx_hash(9), ice_rx_hash_to_skb(9), ice_rx_gcs(9), ice_ptp_rx_hwts_to_skb(9), ice_get_ptype(9), ice_process_skb_fields(9), ice_receive_skb(9), ice_clean_xdp_tx_buf(9), ice_clean_xdp_irq(9), __ice_xmit_xdp_ring(9), ice_finalize_xdp_rx(9), ice_xdp_rx_hw_ts(9), ice_xdp_rx_hash_type(9), ice_xdp_rx_hash(9), ice_xdp_rx_vlan_tag(9) 💜

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that's the whole page, bestie, go forth and validate those checksums ✨

— xoxo, from ./drivers/net/ethernet/intel/ice, October 2026 🎀🫶💖