igc_process_skb_fields(9)

💅 igc_process_skb_fields(9) — a Kernel API Manual moment ✨

ok so bestie, welcome to the <pink>Kernel API Manual</pink> entry for igc_process_skb_fields(9). this is the little function that gives an skb its whole personality before it gets sent up the stack. let's get into it 🎀

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🌸 NAME 🌸

igc_process_skb_fields — populate skb header fields from the Rx descriptor. that's it, that's the whole job, and honestly? she ate. 💅

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✨ SYNOPSIS ✨

void igc_process_skb_fields (struct igc_ring *rx_ring , union
igc_adv_rx_desc *rx_desc , struct sk_buff *skb );

returns nothing, takes three things, no notes. slay. 🫶

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🦋 ARGUMENTS 🦋

• rx_ring — the rx descriptor ring that the packet is being transacted on. like, this is the ring the whole situation is happening inside, ok.
• rx_desc — pointer to the EOP Rx descriptor. EOP = end of packet, in case you were wondering (iykyk). this is the descriptor doing the heavy lifting here.
• skb — pointer to the current skb that's being populated. she's the main character and we're filling in her lore. ✨

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💖 DESCRIPTION 💖

ok so here's the vibe: this function checks the ring, the descriptor, and the packet information — all three, no skipping — in order to populate the hash, checksum, VLAN, protocol, and other fields inside the skb.

like literally, that's the entire function. it does a vibe check on the ring + descriptor + packet, and then fills in skb's hash, checksum, VLAN, protocol, and the rest of the fields. no cap. 🔥

bestie note: it checks ring/descriptor/packet info and populates the skb — those are the only two things this page tells you it does, so don't go reading extra behaviour into it. 👑

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🌈 SEE ALSO 🌈

the kernel file this whole thing lives in:

• ./drivers/net/ethernet/intel/igc/igc_main.c

and now, the friend group. literally all of them, gathered below in their original order, so nobody gets left on read 💜

link + hw control energy:

• igc_power_up_link(9), igc_release_hw_control(9), igc_get_hw_control(9)

TX ring housekeeping (the cleanup crew):

• igc_clean_tx_ring(9), igc_free_tx_resources(9), igc_free_all_tx_resources(9), igc_clean_all_tx_rings(9), igc_disable_all_tx_rings_hw(9), igc_setup_tx_resources(9), igc_setup_all_tx_resources(9)

RX ring housekeeping:

• igc_clean_rx_ring(9), igc_clean_all_rx_rings(9), igc_free_rx_resources(9), igc_free_all_rx_resources(9), igc_setup_rx_resources(9), igc_setup_all_rx_resources(9)

configure era:

• igc_configure_rx_ring(9), igc_configure_rx(9), igc_configure_tx_ring(9), igc_configure_tx(9), igc_setup_mrqc(9), igc_setup_rctl(9), igc_setup_tctl(9)

mac filter girlies:

• igc_set_mac_filter_hw(9), igc_clear_mac_filter_hw(9), igc_set_mac(9), igc_write_mc_addr_list(9)

rx path helpers (next-door neighbours of this function):

• igc_add_rx_frag(9), igc_reuse_rx_page(9), igc_is_non_eop(9), igc_cleanup_headers(9), igc_alloc_rx_buffers(9), igc_clean_tx_irq(9)

filter squad:

• igc_add_mac_filter(9), igc_del_mac_filter(9), igc_add_vlan_prio_filter(9), igc_del_vlan_prio_filter(9), igc_add_etype_filter(9), igc_del_etype_filter(9), igc_get_nfc_rule(9), igc_del_nfc_rule(9), igc_add_nfc_rule(9), igc_enable_empty_addr_recv(9), igc_set_rx_mode(9)

configure + irq setup:

• igc_configure(9), igc_write_ivar(9), igc_configure_msix(9), igc_irq_enable(9), igc_irq_disable(9)

q_vector + interrupt scheme lore:

• igc_reset_q_vector(9), igc_free_q_vector(9), igc_free_q_vectors(9), igc_update_itr(9), igc_set_interrupt_capability(9), igc_update_ring_itr(9), igc_cache_ring_register(9), igc_poll(9), igc_alloc_q_vector(9), igc_alloc_q_vectors(9), igc_init_interrupt_scheme(9)

open/close/up/down lifestyle:

• igc_sw_init(9), igc_up(9), igc_update_stats(9), igc_down(9), igc_change_mtu(9), igc_tx_timeout(9), igc_get_stats64(9)

msix + irq request crew:

• igc_msix_other(9), igc_request_msix(9), igc_clear_interrupt_scheme(9), igc_has_link(9), igc_watchdog(9), igc_intr_msi(9), igc_intr(9), igc_request_irq(9)

the actual lifecycle icons:

• __igc_open(9), __igc_close(9), igc_probe(9), igc_remove(9)

pci error handling besties:

• igc_io_error_detected(9), igc_io_slot_reset(9), igc_io_resume(9)

the rest of the group chat:

• igc_reinit_queues(9), igc_get_hw_dev(9), igc_init_module(9), igc_exit_module(9)

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that's the whole page bestie, no crumbs left. 🍓

k bye, this came from ./drivers/net/ethernet/intel/igc and it's dated October 2026 — go forth and populate those fields 💖✨🎀