i40e_configure_tx_ring(9)

💖 i40e_configure_tx_ring — a Kernel API Manual moment 💖

okay so first things first, bestie: this page lives in the Kernel API Manual section (9), which is the section where all the in-kernel functions hang out. yes it's giving deep-in-the-driver-stack energy and honestly? that's exactly where we are. 🧚

---

✨ NAME ✨

i40e_configure_tx_ring — Configure a transmit ring context and rest

like, that's the whole vibe. we're configuring a transmit ring context. and rest. 🎀

---

🌸 SYNOPSIS 🌸

int i40e_configure_tx_ring (struct i40e_ring *ring );

that's it. that's the whole signature. one function, one pointer, one int coming back at you. no cap. ✨

---

🦋 ARGUMENTS 🦋

• ring — The Tx ring to configure. literally just hand it your transmit ring and let it cook. this is the main character of the entire call, everything else is supporting cast. 💅

---

💜 DESCRIPTION 💜

okay so here's the tea 🍓 — this function configures the Tx descriptor ring in the HMC context. that's the whole job. it takes your Tx ring and gets its descriptor ring set up in the HMC context, so the hardware knows what's up.

it's lowkey a "get your stuff together before the actual work happens" kind of function. no drama, just setup. 🫶

---

👑 SEE ALSO 👑

ngl, this is the part where the manpage just goes off. bestie there are SO many. it's giving infinite scroll. the kernel file itself lives at:

./drivers/net/ethernet/intel/i40e/i40e_main.c

and then, and I cannot stress this enough, EVERYONE is here:

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_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_tx_q(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… every single one. that's the entire i40e friend group and they ALL showed up to the party. 💀🎉 scroll responsibly.

---

mwah 💋 that's the page! it comes to you from ./drivers/net/ethernet/intel/i40e, dated October 2026 — and honestly the October 2026 date is giving "this manpage is a time traveler" and I respect it. go configure those Tx rings bestie, you've got this 🫶✨💖