diff options
author | Hauke Mehrtens <hauke@hauke-m.de> | 2013-11-06 18:17:06 +0100 |
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committer | Hauke Mehrtens <hauke@hauke-m.de> | 2013-11-07 20:07:27 +0100 |
commit | eba8109a9d4b27d501b537665e070913f43e76a5 (patch) | |
tree | 8f63ffa2cb6c8a94fff468eb5b1f88b46a072387 /backport | |
parent | 545e9ad9845f38d4acc29cd4b2a27c94e14071d9 (diff) |
backports: add ipv6_addr_is_solict_mult()
This is needed by drivers/net/usb/cdc_mbim.c
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Diffstat (limited to 'backport')
-rw-r--r-- | backport/backport-include/net/addrconf.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/backport/backport-include/net/addrconf.h b/backport/backport-include/net/addrconf.h new file mode 100644 index 00000000..c4caa99a --- /dev/null +++ b/backport/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_CODE < KERNEL_VERSION(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_CODE < KERNEL_VERSION(3,9,0) */ + +#endif /* _BACKPORT_NET_ADDRCONF_H */ |