diff options
Diffstat (limited to 'include/rdma/ib_addr.h')
| -rw-r--r-- | include/rdma/ib_addr.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/include/rdma/ib_addr.h b/include/rdma/ib_addr.h index b73a14edc85e..7aca12188ef3 100644 --- a/include/rdma/ib_addr.h +++ b/include/rdma/ib_addr.h @@ -304,7 +304,13 @@ static inline void rdma_get_ll_mac(struct in6_addr *addr, u8 *mac) static inline int rdma_is_multicast_addr(struct in6_addr *addr) { - return addr->s6_addr[0] == 0xff; + u32 ipv4_addr; + + if (addr->s6_addr[0] == 0xff) + return 1; + + memcpy(&ipv4_addr, addr->s6_addr + 12, 4); + return (ipv6_addr_v4mapped(addr) && ipv4_is_multicast(ipv4_addr)); } static inline void rdma_get_mcast_mac(struct in6_addr *addr, u8 *mac) |