i40e_control_tx_q(9)

💅 i40e_control_tx_q 💅

ok so bestie, welcome to the Kernel API Manual (section 9) — this one's about a tiny little function with main character energy: i40e_control_tx_q. Its whole job? Start or stop a particular Tx queue. That's it. That's the girl. ✨

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✨ SYNOPSIS ✨

void i40e_control_tx_q (struct i40e_pf *pf , int pf_q , bool enable );

like yes she returns void and takes three things, she's lowkey mysterious about it 💅

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🎀 ARGUMENTS 🎀

• pf — the PF structure 🫶 (your whole personality for this call tbh)
• pf_q — the PF queue to configure, i.e. which queue we're doing a vibe check on
• enable — start or stop the queue. that's the whole toggle. true/false, on/off, slay/uns lay 🌸

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🌸 DESCRIPTION 🌸

This function enables or disables a single queue. One (1) queue. Not a group, not a bundle, just the one — very focused, very intentional 💖

⚠️ ok this part is important so listen up: any delay required after the operation is expected to be handled by the caller of this function. Not her. Not the function. You. So if you were hoping she'd wait around for you — she will not. she has places to be 😭

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🦋 SEE ALSO 🦋

first up, the source file herself:

• Kernel file ./drivers/net/ethernet/intel/i40e/i40e_main.c

and now... the entire extended universe. do not panic. there's a lot of them and we are NOT skipping a single one, i promised 🙈

i40e_hw_to_dev(9), i40e_allocate_dma_mem(9), i40e_free_dma_mem(9), i40e_allocate_virt_mem(9), i40e_free_virt_mem(9), i40e_get_lump(9), i40e_put_lump(9), i40e_find_vsi_from_id(9), i40e_service_event_schedule(9), i40e_tx_timeout(9), i40e_get_vsi_stats_struct(9), i40e_get_netdev_stats_struct_tx(9), i40e_get_netdev_stats_struct(9), i40e_vsi_reset_stats(9), i40e_pf_reset_stats(9), i40e_compute_pci_to_hw_id(9), i40e_stat_update64(9), i40e_stat_update48(9), i40e_stat_update32(9), i40e_stat_update_and_clear32(9), i40e_stats_update_rx_discards(9), i40e_update_eth_stats(9), i40e_update_veb_stats(9), i40e_update_vsi_stats(9), i40e_update_pf_stats(9), i40e_update_stats(9), i40e_count_all_filters(9), i40e_count_active_filters(9), i40e_find_filter(9), i40e_find_mac(9), i40e_is_vsi_in_vlan(9), i40e_correct_mac_vlan_filters(9), i40e_get_vf_new_vlan(9), i40e_correct_vf_mac_vlan_filters(9), i40e_rm_default_mac_filter(9), i40e_add_filter(9), __i40e_del_filter(9), i40e_add_mac_filter(9), i40e_del_mac_filter(9), i40e_set_mac(9), i40e_config_rss_aq(9), i40e_vsi_config_rss(9), i40e_vsi_setup_queue_map_mqprio(9), i40e_vsi_setup_queue_map(9), i40e_addr_sync(9), i40e_addr_unsync(9), i40e_set_rx_mode(9), i40e_undo_del_filter_entries(9), i40e_undo_add_filter_entries(9), i40e_next_filter(9), i40e_update_filter_state(9), i40e_aqc_del_filters(9), i40e_aqc_add_filters(9), i40e_aqc_broadcast_filter(9), i40e_set_promiscuous(9), i40e_sync_vsi_filters(9), i40e_sync_filters_subtask(9), i40e_calculate_vsi_rx_buf_len(9), i40e_max_vsi_frame_size(9), i40e_change_mtu(9), i40e_vlan_stripping_enable(9), i40e_vlan_stripping_disable(9), i40e_add_vlan_all_mac(9), i40e_vsi_add_vlan(9), i40e_rm_vlan_all_mac(9), i40e_vsi_kill_vlan(9), i40e_vlan_rx_add_vid(9), i40e_vlan_rx_add_vid_up(9), i40e_vlan_rx_kill_vid(9), i40e_restore_vlan(9), i40e_vsi_add_pvid(9), i40e_vsi_remove_pvid(9), i40e_vsi_setup_tx_resources(9), i40e_vsi_free_tx_resources(9), i40e_vsi_setup_rx_resources(9), i40e_vsi_free_rx_resources(9), i40e_config_xps_tx_ring(9), i40e_xsk_pool(9), i40e_configure_tx_ring(9), i40e_rx_offset(9), i40e_configure_rx_ring(9), i40e_vsi_configure_tx(9), i40e_vsi_configure_rx(9), i40e_vsi_config_dcb_rings(9), i40e_set_vsi_rx_mode(9), i40e_reset_fdir_filter_cnt(9), i40e_fdir_filter_restore(9), i40e_vsi_configure(9), i40e_vsi_configure_msix(9), i40e_enable_misc_int_causes(9), i40e_configure_msi_and_legacy(9), i40e_irq_dynamic_disable_icr0(9), i40e_irq_dynamic_enable_icr0(9), i40e_msix_clean_rings(9), i40e_irq_affinity_notify(9), i40e_irq_affinity_release(9), i40e_vsi_request_irq_msix(9), i40e_vsi_disable_irq(9), i40e_vsi_enable_irq(9), i40e_free_misc_vector(9), i40e_intr(9), i40e_clean_fdir_tx_irq(9), i40e_fdir_clean_ring(9), i40e_map_vector_to_qp(9), i40e_vsi_map_rings_to_vectors(9), i40e_vsi_request_irq(9), i40e_netpoll(9), i40e_pf_txq_wait(9), i40e_control_wait_tx_q(9), i40e_vsi_enable_tx(9), i40e_pf_rxq_wait(9), i40e_control_rx_q(9), i40e_control_wait_rx_q(9), i40e_vsi_enable_rx(9), i40e_vsi_start_rings(9), i40e_vsi_stop_rings(9), i40e_vsi_stop_rings_no_wait(9), i40e_vsi_free_irq(9), i40e_free_q_vector(9), i40e_vsi_free_q_vectors(9), i40e_reset_interrupt_capability(9), i40e_clear_interrupt_scheme(9), i40e_napi_enable_all(9), i40e_napi_disable_all(9), i40e_vsi_close(9), i40e_quiesce_vsi(9), i40e_unquiesce_vsi(9), i40e_pf_quiesce_all_vsi(9), i40e_pf_unquiesce_all_vsi(9), i40e_vsi_wait_queues_disabled(9), i40e_pf_wait_queues_disabled(9), i40e_get_iscsi_tc_map(9), i40e_dcb_get_num_tc(9), i40e_dcb_get_enabled_tc(9), i40e_mqprio_get_enabled_tc(9), i40e_pf_get_num_tc(9), i40e_pf_get_tc_map(9), i40e_vsi_get_bw_info(9), i40e_vsi_configure_bw_alloc(9), i40e_vsi_config_netdev_tc(9), i40e_vsi_update_queue_map(9), i40e_update_adq_vsi_queues(9), i40e_vsi_config_tc(9), i40e_vsi_reconfig_tc(9), i40e_get_link_speed(9), i40e_bw_bytes_to_mbits(9), i40e_set_bw_limit(9), i40e_remove_queue_channels(9), i40e_get_max_queues_for_channel(9), i40e_validate_num_queues(9), i40e_vsi_reconfig_rss(9), i40e_channel_setup_queue_map(9), i40e_add_channel(9), i40e_channel_config_tx_ring(9), i40e_setup_hw_channel(9), i40e_setup_channel(9), i40e_validate_and_set_switch_mode(9), i40e_create_queue_channel(9), i40e_configure_queue_channels(9), i40e_veb_config_tc(9), i40e_dcb_reconfigure(9), i40e_resume_port_tx(9), i40e_suspend_port_tx(9), i40e_hw_set_dcb_config(9), i40e_hw_dcb_config(9), i40e_dcb_sw_default_config(9), i40e_init_pf_dcb(9), i40e_print_link_message(9), i40e_up_complete(9), i40e_vsi_reinit_locked(9), i40e_force_link_state(9), i40e_up(9), i40e_down(9), i40e_validate_mqprio_qopt(9), i40e_vsi_set_default_tc_config(9), i40e_del_macvlan_filter(9), i40e_add_macvlan_filter(9), i40e_reset_ch_rings(9), i40e_free_macvlan_channels(9), i40e_fwd_ring_up(9), i40e_setup_macvlans(9), i40e_fwd_add(9), i40e_del_all_macvlans(9), i40e_fwd_del(9), i40e_setup_tc(9), i40e_set_cld_element(9), i40e_add_del_cloud_filter(9), i40e_add_del_cloud_filter_big_buf(9), i40e_parse_cls_flower(9), i40e_handle_tclass(9), i40e_configure_clsflower(9), i40e_find_cloud_filter(9), i40e_delete_clsflower(9), i40e_setup_tc_cls_flower(9), i40e_open(9), i40e_netif_set_realnum_tx_rx_queues(9), i40e_vsi_open(9), i40e_fdir_filter_exit(9), i40e_cloud_filter_exit(9), i40e_close(9), i40e_do_reset(9), i40e_dcb_need_reconfig(9), i40e_handle_lldp_event(9), i40e_do_reset_safe(9), i40e_handle_lan_overflow_event(9), i40e_get_current_fd_count(9), i40e_get_global_fd_count(9), i40e_reenable_fdir_sb(9), i40e_reenable_fdir_atr(9), i40e_delete_invalid_filter(9), i40e_fdir_check_and_reenable(9), i40e_fdir_flush_and_replay(9), i40e_get_current_atr_cnt(9), i40e_fdir_reinit_subtask(9), i40e_vsi_link_event(9), i40e_veb_link_event(9), i40e_link_event(9), i40e_watchdog_subtask(9), i40e_reset_subtask(9), i40e_handle_link_event(9), i40e_clean_adminq_subtask(9), i40e_verify_eeprom(9), i40e_enable_pf_switch_lb(9), i40e_disable_pf_switch_lb(9), i40e_config_bridge_mode(9), i40e_reconstitute_veb(9), i40e_get_capabilities(9), i40e_fdir_sb_setup(9), i40e_fdir_teardown(9), i40e_rebuild_cloud_filters(9), i40e_rebuild_channels(9), i40e_clean_xps_state(9), i40e_prep_for_reset(9), i40e_send_version(9), i40e_get_oem_version(9), i40e_reset(9), i40e_rebuild(9), i40e_reset_and_rebuild(9), i40e_handle_reset_warning(9), i40e_print_vf_mdd_event(9), i40e_print_vfs_mdd_events(9), i40e_handle_mdd_event(9), i40e_service_task(9), i40e_service_timer(9), i40e_set_num_rings_in_vsi(9), i40e_vsi_alloc_arrays(9), i40e_vsi_mem_alloc(9), i40e_vsi_free_arrays(9), i40e_clear_rss_config_user(9), i40e_vsi_clear(9), i40e_vsi_clear_rings(9), i40e_alloc_rings(9), i40e_reserve_msix_vectors(9), i40e_init_msix(9), i40e_vsi_alloc_q_vector(9), i40e_vsi_alloc_q_vectors(9), i40e_init_interrupt_scheme(9), i40e_restore_interrupt_scheme(9), i40e_setup_misc_vector_for_recovery_mode(9), i40e_setup_misc_vector(9), i40e_get_rss_aq(9), i40e_config_rss_reg(9), i40e_get_rss_reg(9), i40e_config_rss(9), i40e_get_rss(9), i40e_fill_rss_lut(9), i40e_pf_config_rss(9), i40e_reconfig_rss_queues(9), i40e_get_partition_bw_setting(9), i40e_set_partition_bw_setting(9), i40e_is_total_port_shutdown_enabled(9), i40e_sw_init(9), i40e_set_ntuple(9), i40e_clear_rss_lut(9), i40e_set_loopback(9), i40e_set_features(9), i40e_ndo_fdb_add(9), i40e_ndo_bridge_setlink(9), i40e_ndo_bridge_getlink(9), i40e_features_check(9), i40e_xdp_setup(9), i40e_enter_busy_conf(9), i40e_exit_busy_conf(9), i40e_queue_pair_reset_stats(9), i40e_queue_pair_clean_rings(9), i40e_queue_pair_toggle_napi(9), i40e_queue_pair_toggle_rings(9), i40e_queue_pair_enable_irq(9), i40e_queue_pair_disable_irq(9), i40e_queue_pair_disable(9), i40e_queue_pair_enable(9), i40e_xdp(9), i40e_config_netdev(9), i40e_vsi_delete(9), i40e_is_vsi_uplink_mode_veb(9), i40e_add_vsi(9), i40e_vsi_release(9), i40e_vsi_setup_vectors(9), i40e_vsi_reinit_setup(9), i40e_vsi_setup(9), i40e_veb_get_bw_info(9), i40e_veb_mem_alloc(9), i40e_switch_branch_release(9), i40e_veb_clear(9), i40e_veb_release(9), i40e_add_veb(9), i40e_veb_setup(9), i40e_setup_pf_switch_element(9), i40e_fetch_switch_configuration(9), i40e_setup_pf_switch(9), i40e_determine_queue_usage(9), i40e_setup_pf_filter_control(9), i40e_get_platform_mac_addr(9), i40e_set_fec_in_flags(9), i40e_check_recovery_mode(9), i40e_pf_loop_reset(9), i40e_check_fw_empr(9), i40e_handle_resets(9), i40e_init_recovery_mode(9), i40e_set_subsystem_device_id(9), i40e_probe(9), i40e_remove(9), i40e_enable_mc_magic_wake(9), i40e_io_suspend(9), i40e_io_resume(9), i40e_pci_error_detected(9), i40e_pci_error_slot_reset(9), i40e_pci_error_reset_prepare(9), i40e_pci_error_reset_done(9), i40e_pci_error_resume(9), i40e_shutdown(9), i40e_suspend(9), i40e_resume(9), i40e_init_module(9), i40e_exit_module(9)

like... that's the whole friend group 😭 and yes we listed every single one, no cap. iykyk 💀

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ok that's the tea 🍓 this little page lives in ./drivers/net/ethernet/intel/i40e and it's dated October 2026, and it's literally titled i40e_control_tx_q(9) — she's been on the shelf since then and she's still iconic. go start a queue for me, bestie 👑💜