diff options
Diffstat (limited to 'lib/ipaddr.h')
| -rw-r--r-- | lib/ipaddr.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/lib/ipaddr.h b/lib/ipaddr.h index 33591cb4e7..7f2d06548b 100644 --- a/lib/ipaddr.h +++ b/lib/ipaddr.h @@ -102,4 +102,14 @@ static inline void ipv4_to_ipv4_mapped_ipv6(struct in6_addr *in6, memcpy((char *)in6 + 12, &in, sizeof(struct in_addr)); } +/* + * convert an ipv4 mapped ipv6 address back to ipv4 address + */ +static inline void ipv4_mapped_ipv6_to_ipv4(struct in6_addr *in6, + struct in_addr *in) +{ + memset(in, 0, sizeof(struct in_addr)); + memcpy(in, (char *)in6 + 12, sizeof(struct in_addr)); +} + #endif /* __IPADDR_H__ */ |