idpf_rx_csum(9)

💖 NAME 💖

okay bestie, this is idpf_rx_csum(9) from the Kernel API Manual — the whole function is here to indicate in skb if checksum is good. that’s the assignment, and it ate 💅

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✨ SYNOPSIS ✨

void idpf_rx_csum (struct idpf_rx_queue *rxq , struct sk_buff *skb ,
       struct libeth_rx_csum csum_bits , struct libeth_rx_pt decoded );

it’s a void function, so no return value to chase — very low-key of it 🫶

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🎀 ARGUMENTS 🎀

• rxq — the Rx descriptor ring packet is being transacted on. that’s its whole moment.
• skb — pointer to the current skb being populated. yes, bestie, the skb is getting its glow-up ✨
• csum_bits — checksum fields extracted from the descriptor. the checksum lore, pre-extracted.
• decoded — Decoded Rx packet type related fields. the decoded packet-type details, iconic as always 💅

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🌸 DESCRIPTION 🌸

okay so the one big rule: skb->protocol must be set before this function is called. that’s not optional, that’s the vibe check 🫶

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🌈 SEE ALSO 🌈

the kernel file in question is literally right here: ./drivers/net/ethernet/intel/idpf/idpf_txrx.c

and the whole idpf function family is linked below — no cap, every single one made the list 👑

idpf_chk_linearize(9), idpf_tx_timeout(9), idpf_tx_buf_rel_all(9),
idpf_tx_desc_rel(9), idpf_compl_desc_rel(9), idpf_tx_desc_rel_all(9),
idpf_tx_buf_alloc_all(9), idpf_tx_desc_alloc(9),
idpf_compl_desc_alloc(9), idpf_tx_desc_alloc_all(9),
idpf_rx_page_rel(9), idpf_rx_hdr_buf_rel_all(9),
idpf_rx_buf_rel_bufq(9), idpf_rx_buf_rel_all(9), idpf_rx_desc_rel(9),
idpf_rx_desc_rel_bufq(9), idpf_rx_desc_rel_all(9),
idpf_rx_buf_hw_update(9), idpf_rx_hdr_buf_alloc_all(9),
idpf_post_buf_refill(9), idpf_rx_post_buf_desc(9),
idpf_rx_post_init_bufs(9), idpf_rx_buf_alloc_singleq(9),
idpf_rx_bufs_init_singleq(9), idpf_rx_buf_alloc_all(9),
idpf_rx_bufs_init(9), idpf_rx_bufs_init_all(9), idpf_rx_desc_alloc(9),
idpf_bufq_desc_alloc(9), idpf_rx_desc_alloc_all(9),
idpf_vector_to_queue_set(9), idpf_qp_switch(9), idpf_txq_group_rel(9),
idpf_rxq_sw_queue_rel(9), idpf_rxq_group_rel(9),
idpf_vport_queue_grp_rel_all(9), idpf_vport_queues_rel(9),
idpf_vport_init_fast_path_txqs(9), idpf_vport_init_num_qs(9),
idpf_vport_calc_num_q_desc(9), idpf_vport_calc_total_qs(9),
idpf_vport_calc_num_q_groups(9), idpf_vport_calc_numq_per_grp(9),
idpf_rxq_set_descids(9), idpf_txq_group_alloc(9),
idpf_rxq_group_alloc(9), idpf_vport_queue_grp_alloc_all(9),
idpf_vport_queues_alloc(9), idpf_tx_read_tstamp(9),
idpf_tx_splitq_clean(9), idpf_tx_clean_bufs(9),
idpf_tx_handle_rs_completion(9), idpf_tx_clean_complq(9),
idpf_wait_for_sw_marker_completion(9), idpf_tx_splitq_build_ctb(9),
idpf_tx_splitq_build_flow_desc(9), idpf_txq_has_room(9),
idpf_tx_maybe_stop_splitq(9), idpf_tx_buf_hw_update(9),
idpf_tx_res_count_required(9), idpf_tx_splitq_bump_ntu(9),
idpf_tx_get_free_buf_id(9), idpf_tx_splitq_pkt_err_unmap(9),
idpf_tx_splitq_map(9), idpf_tso(9), idpf_tx_splitq_get_ctx_desc(9),
idpf_tx_drop_skb(9), idpf_tx_tstamp(9), idpf_tx_set_tstamp_desc(9),
idpf_tx_splitq_need_re(9), idpf_tx_splitq_frame(9), idpf_tx_start(9),
idpf_rx_hash(9), idpf_rx_splitq_extract_csum_bits(9), idpf_rx_rsc(9),
idpf_rx_hwtstamp(9), __idpf_rx_process_skb_fields(9),
idpf_rx_hsplit_wa(9), idpf_rx_splitq_test_staterr(9),
idpf_rx_splitq_is_eop(9), idpf_rx_splitq_clean(9),
idpf_rx_update_bufq_desc(9), idpf_rx_clean_refillq(9),
idpf_rx_clean_refillq_all(9), idpf_vport_intr_clean_queues(9),
idpf_vport_intr_napi_del_all(9), idpf_vport_intr_napi_dis_all(9),
idpf_vport_intr_rel(9), idpf_vport_intr_rel_irq(9),
idpf_vport_intr_dis_irq_all(9), idpf_vport_intr_buildreg_itr(9),
idpf_update_dim_sample(9), idpf_net_dim(9),
idpf_vport_intr_update_itr_ena_irq(9), idpf_vport_intr_req_irq(9),
idpf_vport_intr_write_itr(9), idpf_vport_intr_ena_irq_all(9),
idpf_vport_intr_dis_dim_all(9), idpf_vport_intr_deinit(9),
idpf_tx_dim_work(9), idpf_rx_dim_work(9), idpf_init_dim(9),
idpf_vport_intr_napi_ena_all(9), idpf_tx_splitq_clean_all(9),
idpf_rx_splitq_clean_all(9), idpf_vport_splitq_napi_poll(9),
idpf_vport_intr_map_vector_to_qs(9), idpf_vport_intr_init_vec_idx(9),
idpf_vport_intr_napi_add_all(9), idpf_vport_intr_alloc(9),
idpf_vport_intr_init(9), idpf_config_rss(9), idpf_fill_dflt_rss_lut(9),
idpf_init_rss_lut(9), idpf_deinit_rss_lut(9)

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xoxo, your Kernel API Manual bestie 💅 — sourced from ./drivers/net/ethernet/intel/idpf, dated October 2026 🦋