bpf_refcount_acquire
flow_copy = bpf_refcount_acquire(flow);
p = bpf_refcount_acquire(s->stashed);
m = bpf_refcount_acquire(n);
n = bpf_refcount_acquire(n); \
m = bpf_refcount_acquire(n);
m = bpf_refcount_acquire(n);
m = bpf_refcount_acquire(n);
m = bpf_refcount_acquire(n);
m = bpf_refcount_acquire(n);
node_ref = bpf_refcount_acquire(node_new);
m = bpf_refcount_acquire(n);
m = bpf_refcount_acquire(n);
m = bpf_refcount_acquire(n);
m = bpf_refcount_acquire(n);