get_classid_cgroup_id(9)

💖 get_classid_cgroup_id(9) 💖

okay so bestie, welcome to the Kernel API Manual 🌸 this page is about get_classid_cgroup_id, and the vibe is extremely straightforward: it's the function that gets the cgroup id of a net_cls cgroup. no cap, that's the whole name. 💅

✨ NAME ✨

get_classid_cgroup_id — Get the cgroup id of a net_cls cgroup. literally the function's whole personality in one line 🎀

🌈 SYNOPSIS 🌈

unsigned long long get_classid_cgroup_id (void );

🦋 ARGUMENTS 🦋

• void — no arguments. none. zero. the function is low-maintenance like that 🫶

👑 SEE ALSO 👑

• Kernel file ./tools/testing/selftests/bpf/cgroup_helpers.c — the kernel file the page points you at, go peek bestie 👀
• enable_controllers(9)
• write_cgroup_file(9)
• write_cgroup_file_parent(9)
• setup_cgroup_environment(9)
• join_cgroup(9)
• join_root_cgroup(9)
• join_parent_cgroup(9)
• set_cgroup_xattr(9)
• __cleanup_cgroup_environment(9)
• cleanup_cgroup_environment(9)
• get_root_cgroup(9)
• create_and_get_cgroup(9)
• get_cgroup_id_from_path(9)
• setup_classid_environment(9)
• set_classid(9)
• join_classid(9)
• cleanup_classid_environment(9)
• get_cgroup1_hierarchy_id(9)
• open_classid(9)

mwah 💋 that's the page. signed off from ./tools/testing/selftests/bpf, October 2026 — short, sweet, and exactly the facts. periodt. 🌟