The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/netinet6/in6_rss.h

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    1 /*-
    2  * Copyright (c) 2010-2011 Juniper Networks, Inc.
    3  * All rights reserved.
    4  *
    5  * This software was developed by Robert N. M. Watson under contract
    6  * to Juniper Networks, Inc.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  *
   29  * $FreeBSD: releng/12.0/sys/netinet6/in6_rss.h 287278 2015-08-29 07:14:29Z adrian $
   30  */
   31 
   32 #ifndef _NETINET6_IN6_RSS_H_
   33 #define _NETINET6_IN6_RSS_H_
   34 
   35 #include <netinet/in.h>         /* in_addr_t */
   36 
   37 /*
   38  * Network stack interface to generate a hash for a protocol tuple.
   39  */
   40 uint32_t        rss_hash_ip6_4tuple(const struct in6_addr *src, u_short srcport,
   41                     const struct in6_addr *dst, u_short dstport);
   42 uint32_t        rss_hash_ip6_2tuple(const struct in6_addr *src,
   43                     const struct in6_addr *dst);
   44 
   45 /*
   46  * Functions to calculate a software RSS hash for a given mbuf or
   47  * packet detail.
   48  */
   49 int             rss_mbuf_software_hash_v6(const struct mbuf *m, int dir,
   50                     uint32_t *hashval, uint32_t *hashtype);
   51 int             rss_proto_software_hash_v6(const struct in6_addr *src,
   52                     const struct in6_addr *dst, u_short src_port,
   53                     u_short dst_port, int proto, uint32_t *hashval,
   54                     uint32_t *hashtype);
   55 struct mbuf *   rss_soft_m2cpuid_v6(struct mbuf *m, uintptr_t source,
   56                     u_int *cpuid);
   57 
   58 #endif /* !_NETINET6_IN6_RSS_H_ */

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