[PATCH net] sctp: lack the check for ports in sctp_v6_cmp_addr

[Xin Long]

As the member .cmp_addr of sctp_af_inet6, sctp_v6_cmp_addr should also check
the port of addresses, just like sctp_v4_cmp_addr, cause it's invoked by
sctp_cmp_addr_exact().

Now sctp_v6_cmp_addr just check the port when two addresses have different
family, and lack the port check for two ipv6 addresses. that will make
sctp_hash_cmp() cannot work well.

so fix it by adding ports comparison in sctp_v6_cmp_addr().

Signed-off-by: Xin Long <lucien....@gmail.com>
---
 net/sctp/ipv6.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
index ec52912..ce46f1c 100644
--- a/net/sctp/ipv6.c
+++ b/net/sctp/ipv6.c
@@ -526,6 +526,8 @@ static int sctp_v6_cmp_addr(const union sctp_addr *addr1,
                }
                return 0;
        }
+       if (addr1->v6.sin6_port != addr2->v6.sin6_port)
+               return 0;
        if (!ipv6_addr_equal(&addr1->v6.sin6_addr, &addr2->v6.sin6_addr))
                return 0;
        /* If this is a linklocal address, compare the scope_id. */
-- 
2.1.0