SK_RXSTAT
r->sk_ctl = htole32(segs[0].ds_len | SK_RXSTAT | SK_OPCODE_CSUM);
r->sk_ctl = htole32(m->m_len | SK_RXSTAT | SK_OPCODE_CSUM);
r->sk_ctl = htole32(m->m_len | SK_RXSTAT | SK_OPCODE_CSUM);
r->sk_ctl = htole32(segs[0].ds_len | SK_RXSTAT | SK_OPCODE_CSUM);