116 lines
3.6 KiB
C
116 lines
3.6 KiB
C
/*-
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* Copyright (c) 2010 Isilon Systems, Inc.
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* Copyright (c) 2010 iX Systems, Inc.
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* Copyright (c) 2010 Panasas, Inc.
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* Copyright (c) 2013, 2014 Mellanox Technologies, Ltd.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice unmodified, this list of conditions, and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _LINUX_NET_IPV6_H_
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#define _LINUX_NET_IPV6_H_
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#include <sys/types.h>
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#include <netinet/in.h>
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#include <linux/types.h>
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#define IPV6_DEFAULT_HOPLIMIT 64
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#define ipv6_addr_loopback(addr) IN6_IS_ADDR_LOOPBACK(addr)
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#define ipv6_addr_any(addr) IN6_IS_ADDR_UNSPECIFIED(addr)
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#define ipv6_addr_copy(dst, src) \
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memcpy((dst), (src), sizeof(struct in6_addr))
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static inline void
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ipv6_ib_mc_map(const struct in6_addr *addr, const unsigned char *broadcast,
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char *buf)
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{
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unsigned char scope;
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scope = broadcast[5] & 0xF;
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buf[0] = 0;
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buf[1] = 0xff;
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buf[2] = 0xff;
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buf[3] = 0xff;
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buf[4] = 0xff;
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buf[5] = 0x10 | scope;
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buf[6] = 0x60;
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buf[7] = 0x1b;
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buf[8] = broadcast[8];
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buf[9] = broadcast[9];
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memcpy(&buf[10], &addr->s6_addr[6], 10);
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}
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static inline void __ipv6_addr_set_half(__be32 *addr,
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__be32 wh, __be32 wl)
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{
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#if BITS_PER_LONG == 64
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#if defined(__BIG_ENDIAN)
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if (__builtin_constant_p(wh) && __builtin_constant_p(wl)) {
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*(__force u64 *)addr = ((__force u64)(wh) << 32 | (__force u64)(wl));
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return;
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}
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#elif defined(__LITTLE_ENDIAN)
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if (__builtin_constant_p(wl) && __builtin_constant_p(wh)) {
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*(__force u64 *)addr = ((__force u64)(wl) << 32 | (__force u64)(wh));
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return;
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}
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#endif
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#endif
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addr[0] = wh;
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addr[1] = wl;
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}
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static inline void ipv6_addr_set(struct in6_addr *addr,
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__be32 w1, __be32 w2,
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__be32 w3, __be32 w4)
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{
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__ipv6_addr_set_half(&addr->s6_addr32[0], w1, w2);
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__ipv6_addr_set_half(&addr->s6_addr32[2], w3, w4);
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}
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static inline void ipv6_addr_set_v4mapped(const __be32 addr,
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struct in6_addr *v4mapped)
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{
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ipv6_addr_set(v4mapped,
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0, 0,
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htonl(0x0000FFFF),
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addr);
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}
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static inline int ipv6_addr_v4mapped(const struct in6_addr *a)
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{
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return ((a->s6_addr32[0] | a->s6_addr32[1] |
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(a->s6_addr32[2] ^ htonl(0x0000ffff))) == 0);
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}
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static inline int ipv6_addr_cmp(const struct in6_addr *a1, const struct in6_addr *a2)
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{
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return memcmp(a1, a2, sizeof(struct in6_addr));
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}
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#endif /* _LINUX_NET_IPV6_H_ */
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