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Diffstat (limited to 'freebsd/sys/netinet/in_rss.h')
| -rw-r--r-- | freebsd/sys/netinet/in_rss.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/freebsd/sys/netinet/in_rss.h b/freebsd/sys/netinet/in_rss.h new file mode 100644 index 00000000..fd300ac5 --- /dev/null +++ b/freebsd/sys/netinet/in_rss.h @@ -0,0 +1,57 @@ +/*- + * Copyright (c) 2010-2011 Juniper Networks, Inc. + * All rights reserved. + * + * This software was developed by Robert N. M. Watson under contract + * to Juniper Networks, Inc. + * + * 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. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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. + * + * $FreeBSD$ + */ + +#ifndef _NETINET_IN_RSS_H_ +#define _NETINET_IN_RSS_H_ + +#include <netinet/in.h> /* in_addr_t */ + +/* + * Network stack interface to generate a hash for a protocol tuple. + */ +uint32_t rss_hash_ip4_4tuple(struct in_addr src, u_short srcport, + struct in_addr dst, u_short dstport); +uint32_t rss_hash_ip4_2tuple(struct in_addr src, struct in_addr dst); + +/* + * Functions to calculate a software RSS hash for a given mbuf or + * packet detail. + */ +int rss_mbuf_software_hash_v4(const struct mbuf *m, int dir, + uint32_t *hashval, uint32_t *hashtype); +int rss_proto_software_hash_v4(struct in_addr src, + struct in_addr dst, u_short src_port, u_short dst_port, + int proto, uint32_t *hashval, + uint32_t *hashtype); +struct mbuf * rss_soft_m2cpuid_v4(struct mbuf *m, uintptr_t source, + u_int *cpuid); + +#endif /* !_NETINET_IN_RSS_H_ */ |