igb_update_ring_itr(9)

💅 igb_update_ring_itr(9) — Kernel API Manual, but make it cute ✨

🌸 NAME 🌸

igb_update_ring_itr — update the dynamic ITR value based on packet size 🎀

✨ SYNOPSIS ✨

void igb_update_ring_itr (struct igb_q_vector *q_vector );

🫶 ARGUMENTS 🫶

• q_vector — pointer to q_vector. That's the whole arg, bestie. 💖

🦋 DESCRIPTION 🦋

Okay so this function stores a shiny new ITR value based strictly on packet size. It's highkey less sophisticated than the algorithm used in igb_update_itr, and that's literally because synchronizing statistics across multiple receive rings is a whole struggle. 😭

The divisors and thresholds this function uses were determined based on theoretical maximum wire speed and testing data, so it can minimize response time while increasing bulk throughput. Iconic behavior, honestly. ✨

This functionality is controlled by ethtool's coalescing settings. That's the remote control, iykyk. 🎀

💀 NOTE 💀

Heads up: this function is called only when operating in a multiqueue receive environment. Not single-queue energy, periodt. 👑

🔥 SEE ALSO 🔥

Kernel file: ./drivers/net/ethernet/intel/igb/igb_main.c

And the whole igb cinematic universe, fr fr:

igb_get_i2c_data(9), igb_set_i2c_data(9), igb_set_i2c_clk(9),
igb_get_i2c_clk(9), igb_get_hw_dev(9), igb_init_module(9),
igb_exit_module(9), igb_cache_ring_register(9), igb_write_ivar(9),
igb_configure_msix(9), igb_request_msix(9), igb_free_q_vector(9),
igb_reset_q_vector(9), igb_free_q_vectors(9),
igb_clear_interrupt_scheme(9), igb_set_interrupt_capability(9),
igb_alloc_q_vector(9), igb_alloc_q_vectors(9),
igb_init_interrupt_scheme(9), igb_request_irq(9), igb_irq_disable(9),
igb_irq_enable(9), igb_release_hw_control(9), igb_get_hw_control(9),
igb_config_tx_modes(9), igb_setup_tx_mode(9), igb_configure(9),
igb_power_up_link(9), igb_power_down_link(9), igb_check_swap_media(9),
igb_up(9), igb_set_i2c_bb(9), igb_set_fw_version(9), igb_init_mas(9),
igb_init_i2c(9), igb_probe(9), igb_remove_i2c(9), igb_remove(9),
igb_probe_vfs(9), igb_sw_init(9), __igb_open(9), __igb_close(9),
igb_setup_tx_resources(9), igb_setup_all_tx_resources(9),
igb_setup_tctl(9), igb_configure_tx_ring(9), igb_configure_tx(9),
igb_setup_rx_resources(9), igb_setup_all_rx_resources(9),
igb_setup_mrqc(9), igb_setup_rctl(9), igb_setup_srrctl(9),
igb_configure_rx_ring(9), igb_configure_rx(9), igb_free_tx_resources(9),
igb_free_all_tx_resources(9), igb_clean_tx_ring(9),
igb_clean_all_tx_rings(9), igb_free_rx_resources(9),
igb_free_all_rx_resources(9), igb_clean_rx_ring(9),
igb_clean_all_rx_rings(9), igb_set_mac(9), igb_write_mc_addr_list(9),
igb_set_rx_mode(9), igb_has_link(9), igb_check_lvmmc(9),
igb_watchdog(9), igb_update_itr(9), igb_tx_timeout(9),
igb_get_stats64(9), igb_change_mtu(9), igb_update_stats(9),
igb_set_uta(9), igb_intr_msi(9), igb_intr(9), igb_poll(9),
igb_clean_tx_irq(9), igb_reuse_rx_page(9), igb_add_rx_frag(9),
igb_is_non_eop(9), igb_cleanup_headers(9), igb_process_skb_fields(9),
igb_alloc_rx_buffers(9), igb_mii_ioctl(9), igb_ioctl(9),
igb_io_error_detected(9), igb_io_slot_reset(9), igb_io_resume(9),
igb_rar_set_index(9), igb_read_i2c_byte(9), igb_write_i2c_byte(9)

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Mwah 💋 this page came from ./drivers/net/ethernet/intel/igb, dated October 2026, and yes bestie, it's igb_update_ring_itr(9). Bye 🫶