tb_configure_sym(9)

✨ tb_configure_sym(9) ✨

okay so bestie, welcome to the Kernel API Manual entry for tb_configure_sym — lowkey one of the cutest little Thunderbolt helpers out here, and we're gonna get into it 💖

💅 NAME

tb_configure_sym — transition links to symmetric if possible 🦋

🌸 SYNOPSIS

int tb_configure_sym (struct tb *tb , struct tb_port *src_port , struct
tb_port *dst_port , bool keep_asym );

🎀 ARGUMENTS

• tb — the domain structure, aka the whole vibe container bestie 🫶
• src_port — the source adapter where the transition starts, main character energy fr
• dst_port — the destination adapter, the one we're walking toward 🌈
• keep_asym — keep the asymmetric link if that's what's preferred, no cap

🔥 DESCRIPTION

So here's the tea ☕ — tb_configure_sym goes over each link from src_port to dst_port and tries to transition the link to symmetric if the currently consumed bandwidth allows it and the link's asymmetric preference is ignored (which happens when keep_asym is false). It's giving glow-up arc for your links ✨

⭐ RETURN

0 on success, negative errno otherwise 😭 (iykyk)

👑 SEE ALSO

• Kernel file ./drivers/thunderbolt/tb.c struct tb_cm(9)
• tb_consumed_usb3_pcie_bandwidth(9)
• tb_consumed_dp_bandwidth(9)
• tb_maximum_bandwidth(9)
• tb_available_bandwidth(9)
• tb_configure_asym(9)

and that's the whole page bestie, we ate 💅✨ this one lives over in ./drivers/thunderbolt, dated October 2026 — go off, you've got this 🎀💜