usb4_dp_port...ed_bandwidth(9)

🎀 usb4_dp_port_allocated_bandwidth(9) 🎀

okay so bestie, this is the page for usb4_dp_port_allocated_bandwidth(9), and it lives in the Kernel API Manual. The vibe? We're reading how much bandwidth a DP IN adapter has been allocated. Slay. ✨

🌸 NAME 🌸

• usb4_dp_port_allocated_bandwidth — returns the allocated bandwidth, no cap. 💅

🦋 SYNOPSIS 🦋

int usb4_dp_port_allocated_bandwidth (struct tb_port *port );

🍓 ARGUMENTS 🍓

• port — DP IN adapter. That's the little guy we're asking about. 🫶

✨ DESCRIPTION ✨

Okay so what this does: it reads the allocated bandwidth for port in Mb/s, and it's taking into account the programmed granularity. That's the whole main character move. 💖

🔥 RETURN 🔥

It gives you the allocated bandwidth in Mb/s. If something goes wrong, you get a negative errno instead. Periodt. 😭

🌈 SEE ALSO 🌈

The kernel file is ./drivers/thunderbolt/usb4.c, and the whole USB4/Thunderbolt friend group is linked here — every single one, fr fr:

• usb4_switch_check_wakes(9)
• usb4_switch_setup(9)
• usb4_switch_configuration_valid(9)
• usb4_switch_read_uid(9)
• usb4_switch_drom_read(9)
• usb4_switch_lane_bonding_possible(9)
• usb4_switch_set_wake(9)
• usb4_switch_set_sleep(9)
• usb4_switch_nvm_sector_size(9)
• usb4_switch_nvm_read(9)
• usb4_switch_nvm_set_offset(9)
• usb4_switch_nvm_write(9)
• usb4_switch_nvm_authenticate(9)
• usb4_switch_nvm_authenticate_status(9)
• usb4_switch_credits_init(9)
• usb4_switch_query_dp_resource(9)
• usb4_switch_alloc_dp_resource(9)
• usb4_switch_dealloc_dp_resource(9)
• usb4_port_index(9)
• usb4_switch_map_pcie_down(9)
• usb4_switch_map_usb3_down(9)
• usb4_switch_add_ports(9)
• usb4_switch_remove_ports(9)
• usb4_port_unlock(9)
• usb4_port_hotplug_enable(9)
• usb4_port_reset(9)
• usb4_port_configure(9)
• usb4_port_unconfigure(9)
• usb4_port_configure_xdomain(9)
• usb4_port_unconfigure_xdomain(9)
• usb4_port_sb_read(9)
• usb4_port_sb_write(9)
• usb4_port_router_offline(9)
• usb4_port_router_online(9)
• usb4_port_enumerate_retimers(9)
• usb4_port_clx_supported(9)
• usb4_port_asym_supported(9)
• usb4_port_asym_set_link_width(9)
• usb4_port_asym_start(9)
• usb4_port_margining_caps(9)
• usb4_port_hw_margin(9)
• usb4_port_sw_margin(9)
• usb4_port_sw_margin_errors(9)
• usb4_port_retimer_set_inbound_sbtx(9)
• usb4_port_retimer_unset_inbound_sbtx(9)
• usb4_port_retimer_is_last(9)
• usb4_port_retimer_is_cable(9)
• usb4_port_retimer_nvm_sector_size(9)
• usb4_port_retimer_nvm_set_offset(9)
• usb4_port_retimer_nvm_write(9)
• usb4_port_retimer_nvm_authenticate(9)
• usb4_port_retimer_nvm_authenticate_status(9)
• usb4_port_retimer_nvm_read(9)
• usb4_usb3_port_max_link_rate(9)
• usb4_usb3_port_allocated_bandwidth(9)
• usb4_usb3_port_allocate_bandwidth(9)
• usb4_usb3_port_release_bandwidth(9)
• usb4_dp_port_set_cm_id(9)
• usb4_dp_port_bandwidth_mode_supported(9)
• usb4_dp_port_bandwidth_mode_enabled(9)
• usb4_dp_port_set_cm_bandwidth_mode_supported(9)
• usb4_dp_port_group_id(9)
• usb4_dp_port_set_group_id(9)
• usb4_dp_port_nrd(9)
• usb4_dp_port_set_nrd(9)
• usb4_dp_port_granularity(9)
• usb4_dp_port_set_granularity(9)
• usb4_dp_port_set_estimated_bandwidth(9)
• usb4_dp_port_allocate_bandwidth(9)
• usb4_dp_port_requested_bandwidth(9)
• usb4_pci_port_set_ext_encapsulation(9)
• usb4_pci_port_ltssm_state(9)

cute little sign-off: this page comes from ./drivers/thunderbolt, dated October 2026, and the footer header name is usb4_dp_port...ed_bandwidth(9). Bye bestie, go read some bandwidth 💜🦋