i40e_aq_debu...ite_register(9)

💖 i40e_aq_debug_write_register — NAME 🎀

okay so bestie, this is the man page for i40e_aq_debug_write_register — that's literally it. The description slot is empty, it's giving "name only, no notes" 🙈 so we move.

It's a Linux kernel API manual page, section 9 (that's the kernel-API girlies, iykyk).

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✨ SYNOPSIS ✨

int i40e_aq_debug_write_register (struct i40e_hw *hw , u32 reg_addr ,
u64 reg_val , struct i40e_asq_cmd_details *cmd_details );

she returns an int, and she takes four things. let's meet them 💅

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🫶 ARGUMENTS 🫶

• hw — pointer to the hw struct 🦋 (yes queen, the whole hardware context)
• reg_addr — register address, of type u32 💫
• reg_val — register value, of type u64 ⭐
• cmd_details — pointer to command details structure or NULL — her choice, main character energy 👑

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🌸 DESCRIPTION 🌸

Write to a register using the admin queue commands. that's the whole vibe, no cap — she writes to a register, and she does it through the admin queue commands instead of just poking at it directly 🎀

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🔥 SEE ALSO 🔥

first up, the source file herself: Kernel file ./drivers/net/ethernet/intel/i40e/i40e_common.c — that's where she lives, that's her home 🏡

and now, the whole entire friend group. literally all of them, in order, no one left out, everyone invited to the party 🎉:

i40e_set_mac_type(9), i40e_debug_aq(9), i40e_check_asq_alive(9), i40e_aq_queue_shutdown(9), i40e_aq_get_set_rss_lut(9), i40e_aq_get_rss_lut(9), i40e_aq_set_rss_lut(9), i40e_aq_get_set_rss_key(9), i40e_aq_get_rss_key(9), i40e_aq_set_rss_key(9), i40e_init_shared_code(9), i40e_aq_mac_address_read(9), i40e_aq_mac_address_write(9), i40e_get_mac_addr(9), i40e_get_port_mac_addr(9), i40e_pre_tx_queue_cfg(9), i40e_get_pba_string(9), i40e_get_media_type(9), i40e_poll_globr(9), i40e_pf_reset(9), i40e_clear_hw(9), i40e_clear_pxe_mode(9), i40e_led_is_mine(9), i40e_led_get(9), i40e_led_set(9), i40e_aq_get_phy_capabilities(9), i40e_aq_set_phy_config(9), i40e_set_fc(9), i40e_aq_set_mac_config(9), i40e_aq_clear_pxe_mode(9), i40e_aq_set_link_restart_an(9), i40e_aq_get_link_info(9), i40e_aq_set_phy_int_mask(9), i40e_aq_set_mac_loopback(9), i40e_aq_set_phy_debug(9), i40e_aq_add_vsi(9), i40e_aq_set_default_vsi(9), i40e_aq_clear_default_vsi(9), i40e_aq_set_vsi_unicast_promiscuous(9), i40e_aq_set_vsi_multicast_promiscuous(9), i40e_aq_set_vsi_mc_promisc_on_vlan(9), i40e_aq_set_vsi_uc_promisc_on_vlan(9), i40e_aq_set_vsi_bc_promisc_on_vlan(9), i40e_aq_set_vsi_broadcast(9), i40e_aq_get_vsi_params(9), i40e_aq_update_vsi_params(9), i40e_aq_get_switch_config(9), i40e_aq_set_switch_config(9).

still going, she's not done 😤 : i40e_aq_get_firmware_version(9), i40e_aq_send_driver_version(9), i40e_get_link_status(9), i40e_update_link_info(9), i40e_aq_add_veb(9), i40e_aq_get_veb_parameters(9), i40e_prepare_add_macvlan(9), i40e_aq_add_macvlan(9), i40e_aq_add_macvlan_v2(9), i40e_aq_remove_macvlan(9), i40e_aq_remove_macvlan_v2(9), i40e_aq_send_msg_to_vf(9), i40e_aq_debug_read_register(9) — yes bestie, the read version, her sibling 💜 — i40e_aq_request_resource(9), i40e_aq_release_resource(9), i40e_aq_read_nvm(9), i40e_aq_erase_nvm(9), i40e_parse_discover_capabilities(9), i40e_aq_discover_capabilities(9), i40e_aq_update_nvm(9), i40e_aq_get_lldp_mib(9), i40e_aq_set_lldp_mib(9), i40e_aq_cfg_lldp_mib_change_event(9), i40e_aq_stop_lldp(9), i40e_aq_start_lldp(9), i40e_aq_set_dcb_parameters(9), i40e_aq_get_cee_dcb_config(9), i40e_aq_add_udp_tunnel(9), i40e_aq_del_udp_tunnel(9), i40e_aq_delete_element(9), i40e_aq_dcb_updated(9), i40e_aq_tx_sched_cmd(9), i40e_aq_config_vsi_bw_limit(9), i40e_aq_config_vsi_tc_bw(9), i40e_aq_config_switch_comp_ets(9), i40e_aq_config_switch_comp_bw_config(9), i40e_aq_query_vsi_bw_config(9), i40e_aq_query_vsi_ets_sla_config(9), i40e_aq_query_switch_comp_ets_config(9), i40e_aq_query_port_ets_config(9), i40e_aq_query_switch_comp_bw_config(9).

the QoS/filter girlies 🌈 : i40e_validate_filter_settings(9), i40e_set_filter_control(9), i40e_aq_add_rem_control_packet_filter(9), i40e_add_filter_to_drop_tx_flow_control_frames(9), i40e_aq_alternate_read(9), i40e_aq_suspend_port_tx(9), i40e_aq_resume_port_tx(9), i40e_set_pci_config_data(9), i40e_aq_debug_dump(9), i40e_read_bw_from_alt_ram(9), i40e_aq_configure_partition_bw(9).

the PHY/MDIO crew 💀 (lowkey the most unhinged names): i40e_read_phy_register_clause22(9), i40e_write_phy_register_clause22(9), i40e_read_phy_register_clause45(9), i40e_write_phy_register_clause45(9), i40e_get_phy_address(9), i40e_led_get_reg(9), i40e_led_set_reg(9), i40e_led_get_phy(9), i40e_led_set_phy(9), i40e_aq_rx_ctl_read_register(9), i40e_read_rx_ctl(9), i40e_aq_rx_ctl_write_register(9), i40e_write_rx_ctl(9), i40e_mdio_if_number_selection(9), i40e_aq_set_phy_register_ext(9), i40e_aq_get_phy_register_ext(9).

and closing it out with the DDP/profile icons 👑 : i40e_aq_write_ddp(9), i40e_aq_get_ddp_list(9), i40e_find_segment_in_package(9), i40e_ddp_exec_aq_section(9), i40e_validate_profile(9), i40e_write_profile(9), i40e_rollback_profile(9), i40e_aq_add_cloud_filters(9), i40e_aq_add_cloud_filters_bb(9), i40e_aq_rem_cloud_filters(9), i40e_aq_rem_cloud_filters_bb(9).

periodt. that's the whole list, every single one, ate 💅

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ok tiny sign-off moment 🎀 this page comes from ./drivers/net/ethernet/intel/i40e and it's dated October 2026, and it's a Kernel API Manual page. love that for her. go write some registers bestie 💖✨