bpf_get_cgroup_classid 2645 net/core/filter.c BPF_CALL_1(bpf_get_cgroup_classid, const struct sk_buff *, skb) bpf_get_cgroup_classid 2651 net/core/filter.c .func = bpf_get_cgroup_classid, bpf_get_cgroup_classid 294 tools/testing/selftests/bpf/bpf_helpers.h static unsigned int (*bpf_get_cgroup_classid)(void *ctx) =