FreeBSD/Linux Kernel Cross Reference
sys/dev/rndtest/rndtest.h

     /*      $FreeBSD: releng/5.3/sys/dev/rndtest/rndtest.h 112125 2003-03-11 22:54:44Z sam $        */
     /*      $OpenBSD$       */
     
     /*
      * Copyright (c) 2002 Jason L. Wright (jason@thought.net)
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by Jason L. Wright
     * 4. The name of the author may not be used to endorse or promote products
     *    derived from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
     * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
     * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     * POSSIBILITY OF SUCH DAMAGE.
     */
    
    
    /* Some of the tests depend on these values */
    #define RNDTEST_NBYTES  2500
    #define RNDTEST_NBITS   (8 * RNDTEST_NBYTES)
    
    struct rndtest_state {
            device_t        rs_parent;      /* associated device */
            u_int8_t        *rs_end, *rs_begin, *rs_current;
            struct callout  rs_to;
            int             rs_collect;     /* collect and test data */
            int             rs_discard;     /* discard/accept random data */
            u_int8_t        rs_buf[RNDTEST_NBYTES];
    };
    
    struct rndtest_stats {
            u_int32_t       rst_discard;    /* number of bytes discarded */
            u_int32_t       rst_tests;      /* number of test runs */
            u_int32_t       rst_monobit;    /* monobit test failures */
            u_int32_t       rst_runs;       /* 0/1 runs failures */
            u_int32_t       rst_longruns;   /* longruns failures */
            u_int32_t       rst_chi;        /* chi^2 failures */
    };
    
    extern  struct rndtest_state *rndtest_attach(device_t dev);
    extern  void rndtest_detach(struct rndtest_state *);
    extern  void rndtest_harvest(struct rndtest_state *arg, void * buf, u_int len);

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