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netinet/in.h: Add some IPv6 macros

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This commit is contained in:
Gregory Nutt 2015-02-25 08:26:40 -06:00
parent 234cc5b7bf
commit dbb281319a
1 changed files with 22 additions and 0 deletions
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22
include/netinet/in.h
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@ -110,6 +110,28 @@
#define s6_addr16 in6_u.u6_addr16
#define s6_addr32 in6_u.u6_addr32
/* Checks for special IPv6 addresses */
#define IN6_IS_ADDR_MULTICAST(a) \
((a)->s6_addr[0] == 0xff)
#define IN6_IS_ADDR_LOOPBACK(a) \
((a)->s6_addr32[0] == 0 && \
(a)->s6_addr32[1] == 0 && \
(a)->s6_addr32[2] == 0 && \
(a)->s6_addr32[3] == HTONL(1))
#define IN6_IS_ADDR_UNSPECIFIED(a) \
((a)->s6_addr32[0] == 0 && \
(a)->s6_addr32[1] == 0 && \
(a)->s6_addr32[2] == 0 && \
(a)->s6_addr32[3] == 0)
#define IN6_IS_ADDR_V4MAPPED(a) \
((a)->s6_addr32[0] == 0 && \
(a)->s6_addr32[1] == 0 && \
(a)->s6_addr32[2] == HTONL(0xffff))
/****************************************************************************
* Public Type Definitions
****************************************************************************/