i40e_aq_que...mp_bw_config(9)

✨ NAME ✨

okay so bestie, this page is from the Kernel API Manual and it's all about one very specific little function:

i40e_aq_query_switch_comp_bw_config — which is literally "Query Switch comp BW configuration" 💅

no cap, that's the whole job. it goes and asks the switching component what its bandwidth config looks like. that's it. that's the vibe. 🎀

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🌸 SYNOPSIS 🌸

int i40e_aq_query_switch_comp_bw_config (struct i40e_hw *hw , u16 seid ,
struct i40e_aqc_query_switching_comp_bw_config_resp *bw_data , struct
i40e_asq_cmd_details *cmd_details );

like, yes, it returns an int, and yes, the line breaks are ugly, i don't make the rules 🙈

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🦋 ARGUMENTS 🦋

four args, all of them serving looks, all of them mandatory to know about:

• hw — pointer to the hw struct. the main character, honestly 👑 everything starts here.
• seid — the seid of the switching component. it's a u16 and it's how you tell the function which switching component you're being nosy about 🕵️‍♀️
• bw_data — Buffer to hold switching component's BW configuration. it's a struct i40e_aqc_query_switching_comp_bw_config_resp * and it's literally the container for the tea you're asking for 🍓
• cmd_details — pointer to command details structure or NULL. NULL is fully valid here, she's flexible 💅

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💖 SEE ALSO 💖

first up, the source of truth, the mothership:

Kernel file ./drivers/net/ethernet/intel/i40e/i40e_common.c

and now... the friend group. it's a lot of friends. like an entire group chat you got added to and never muted. every single one of them, no cuts, no skips 🔥

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)
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)
i40e_aq_debug_write_register(9)
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_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)
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)
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)

like i said. a lot. but they're all iconic in their own way, iykyk 💜

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and that's the whole page, bestie 🫶 this little gem lives in ./drivers/net/ethernet/intel/i40e, it's dated October 2026, and it's living rent-free in section 9 of the Kernel API Manual. go query some bandwidth. slay. 💅✨