| 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 | |
| 30 | #ifndef _NETINET6_IN6_RSS_H_ |
| 31 | #define _NETINET6_IN6_RSS_H_ |
| 32 | |
| 33 | #include <netinet/in.h> /* in_addr_t */ |
| 34 | |
| 35 | /* |
| 36 | * Network stack interface to generate a hash for a protocol tuple. |
| 37 | */ |
| 38 | uint32_t rss_hash_ip6_4tuple(const struct in6_addr *src, u_short srcport, |
| 39 | const struct in6_addr *dst, u_short dstport); |
| 40 | uint32_t rss_hash_ip6_2tuple(const struct in6_addr *src, |
| 41 | const struct in6_addr *dst); |
| 42 | |
| 43 | /* |
| 44 | * Functions to calculate a software RSS hash for a given mbuf or |
| 45 | * packet detail. |
| 46 | */ |
| 47 | int rss_mbuf_software_hash_v6(const struct mbuf *m, int dir, |
| 48 | uint32_t *hashval, uint32_t *hashtype); |
| 49 | int rss_proto_software_hash_v6(const struct in6_addr *src, |
| 50 | const struct in6_addr *dst, u_short src_port, |
| 51 | u_short dst_port, int proto, uint32_t *hashval, |
| 52 | uint32_t *hashtype); |
| 53 | struct mbuf * rss_soft_m2cpuid_v6(struct mbuf *m, uintptr_t source, |
| 54 | u_int *cpuid); |
| 55 | uint32_t xps_proto_software_hash_v6(const struct in6_addr *s, |
| 56 | const struct in6_addr *d, u_short sp, u_short dp, |
| 57 | int proto, uint32_t *hashtype); |
| 58 | |
| 59 | #endif /* !_NETINET6_IN6_RSS_H_ */ |