XC 1871 net/packet/af_packet.c pg_vec = XC(po->pg_vec, pg_vec); XC 1877 net/packet/af_packet.c order = XC(po->pg_vec_order, order); XC 1878 net/packet/af_packet.c req->tp_block_nr = XC(po->pg_vec_len, req->tp_block_nr);