This is needed by drivers/net/usb/cdc_mbim.c
Signed-off-by: Hauke Mehrtens <hauke@xxxxxxxxxx>
---
backport/backport-include/net/addrconf.h | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
create mode 100644 backport/backport-include/net/addrconf.h
diff --git a/backport/backport-include/net/addrconf.h b/backport/backport-include/net/addrconf.h
new file mode 100644
index 0000000..c4caa99
--- /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 */
--
1.7.10.4
--
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