TCP_RMEM_TO_WIN_SCALE
return scaled_space >> TCP_RMEM_TO_WIN_SCALE;
u64 val = (u64)win << TCP_RMEM_TO_WIN_SCALE;
#define TCP_DEFAULT_SCALING_RATIO (1 << (TCP_RMEM_TO_WIN_SCALE - 1))
u64 val = (u64)skb->len << TCP_RMEM_TO_WIN_SCALE;