Home | History | Annotate | Line # | Download | only in net
rss_config.c revision 1.1.2.2 
      1 /*	$NetBSD: rss_config.c,v 1.1.2.2 2018/02/26 00:25:16 snj Exp $  */
      2 
      3 /*
      4  * Copyright (c) 2018 Internet Initiative Japan Inc.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     26  * POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #include <sys/cdefs.h>
     30 __KERNEL_RCSID(0, "$NetBSD: rss_config.c,v 1.1.2.2 2018/02/26 00:25:16 snj Exp $");
     31 
     32 #include <sys/param.h>
     33 #include <sys/systm.h>
     34 #include <sys/kernel.h>
     35 
     36 #include <net/rss_config.h>
     37 
     38 /*
     39  * Same as FreeBSD.
     40  *
     41  * This rss key is assumed for verification suite in many intel Gigabit and
     42  * 10 Gigabit Controller specifications.
     43  */
     44 static uint8_t rss_default_key[RSS_KEYSIZE] = {
     45 	0x6d, 0x5a, 0x56, 0xda, 0x25, 0x5b, 0x0e, 0xc2,
     46 	0x41, 0x67, 0x25, 0x3d, 0x43, 0xa3, 0x8f, 0xb0,
     47 	0xd0, 0xca, 0x2b, 0xcb, 0xae, 0x7b, 0x30, 0xb4,
     48 	0x77, 0xcb, 0x2d, 0xa3, 0x80, 0x30, 0xf2, 0x0c,
     49 	0x6a, 0x42, 0xb7, 0x3b, 0xbe, 0xac, 0x01, 0xfa,
     50 };
     51 
     52 #ifdef NOTYET
     53 /*
     54  * Same as DragonFlyBSD.
     55  *
     56  * This rss key make rss hash value symmetric, that is, the hash value
     57  * calculated by func("source address", "destination address") equals to
     58  * the hash value calculated by func("destination address", "source address").
     59  */
     60 static uint8_t rss_symmetric_key[RSS_KEYSIZE] = {
     61 	0x6d, 0x5a, 0x6d, 0x5a, 0x6d, 0x5a, 0x6d, 0x5a,
     62 	0x6d, 0x5a, 0x6d, 0x5a, 0x6d, 0x5a, 0x6d, 0x5a,
     63 	0x6d, 0x5a, 0x6d, 0x5a, 0x6d, 0x5a, 0x6d, 0x5a,
     64 	0x6d, 0x5a, 0x6d, 0x5a, 0x6d, 0x5a, 0x6d, 0x5a,
     65 };
     66 #endif
     67 
     68 /*
     69  * sizeof(key) must be more than or equal to RSS_KEYSIZE.
     70  */
     71 void
     72 rss_getkey(uint8_t *key)
     73 {
     74 
     75 	memcpy(key, rss_default_key, sizeof(rss_default_key));
     76 }
     77