ENIC_RSS_BYTES_PER_KEY
kidx = i / ENIC_RSS_BYTES_PER_KEY;
bidx = i % ENIC_RSS_BYTES_PER_KEY;
#define ENIC_RSS_LEN (ENIC_RSS_BYTES_PER_KEY * ENIC_RSS_KEYS)
u8 b[ENIC_RSS_BYTES_PER_KEY];