sctp: lack the check for ports in sctp_v6_cmp_addr

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.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 0 deletions

diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
index ec529121f38a..ce46f1c7f133 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. */