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 * $FreeBSD$
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 */
40uint32_t	rss_hash_ip6_4tuple(const struct in6_addr *src, u_short srcport,
41		    const struct in6_addr *dst, u_short dstport);
42uint32_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 */
49int		rss_mbuf_software_hash_v6(const struct mbuf *m, int dir,
50		    uint32_t *hashval, uint32_t *hashtype);
51int		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);
55struct mbuf *	rss_soft_m2cpuid_v6(struct mbuf *m, uintptr_t source,
56		    u_int *cpuid);
57
58#endif /* !_NETINET6_IN6_RSS_H_ */
59