diff options
| author | Dominik Sliwa <dominik.sliwa@toradex.com> | 2019-03-04 12:01:54 +0100 |
|---|---|---|
| committer | Dominik Sliwa <dominik.sliwa@toradex.com> | 2019-03-04 12:01:54 +0100 |
| commit | 348fa3f6871f56a37dcd16c99ca98118c6d79a38 (patch) | |
| tree | 6fcae7785bae4ffb838fd6549f7d01ba6abf0763 /backport-include/net/addrconf.h | |
Backports v4.19.24
Backports generated by toradex backports 515a1fa55cda2b1d952872e1786857481bd54fcc
against mainline kernel tag v4.19.24
Signed-off-by: Dominik Sliwa <dominik.sliwa@toradex.com>
Diffstat (limited to 'backport-include/net/addrconf.h')
| -rw-r--r-- | backport-include/net/addrconf.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/backport-include/net/addrconf.h b/backport-include/net/addrconf.h new file mode 100644 index 0000000..f1e8e62 --- /dev/null +++ b/backport-include/net/addrconf.h @@ -0,0 +1,25 @@ +#ifndef _BACKPORT_NET_ADDRCONF_H +#define _BACKPORT_NET_ADDRCONF_H 1 + +#include_next <net/addrconf.h> + +#include <linux/version.h> + +#if LINUX_VERSION_IS_LESS(3,9,0) +static inline bool ipv6_addr_is_solict_mult(const struct in6_addr *addr) +{ +#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64 + __u64 *p = (__u64 *)addr; + return ((p[0] ^ cpu_to_be64(0xff02000000000000UL)) | + ((p[1] ^ cpu_to_be64(0x00000001ff000000UL)) & + cpu_to_be64(0xffffffffff000000UL))) == 0UL; +#else + return ((addr->s6_addr32[0] ^ htonl(0xff020000)) | + addr->s6_addr32[1] | + (addr->s6_addr32[2] ^ htonl(0x00000001)) | + (addr->s6_addr[12] ^ 0xff)) == 0; +#endif +} +#endif /* LINUX_VERSION_IS_LESS(3,9,0) */ + +#endif /* _BACKPORT_NET_ADDRCONF_H */ |