ipv4: make ip_local_reserved_ports per netns

ip_local_port_range is already per netns, so should ip_local_reserved_ports
be. And since it is none by default we don't actually need it when we don't
enable CONFIG_SYSCTL.

By the way, rename inet_is_reserved_local_port() to inet_is_local_reserved_port()

Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 2 deletions

diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index e37b2cbbf177..2af76eaba8f7 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -5946,8 +5946,9 @@ static long sctp_get_port_local(struct sock *sk, union sctp_addr *addr)
                 /* Search for an available port. */
                 int low, high, remaining, index;
                 unsigned int rover;
+                struct net *net = sock_net(sk);
 
-                inet_get_local_port_range(sock_net(sk), &low, &high);
+                inet_get_local_port_range(net, &low, &high);
                 remaining = (high - low) + 1;
                 rover = prandom_u32() % remaining + low;
 
@@ -5955,7 +5956,7 @@ static long sctp_get_port_local(struct sock *sk, union sctp_addr *addr)
                         rover++;
                         if ((rover < low) || (rover > high))
                                 rover = low;
-                        if (inet_is_reserved_local_port(rover))
+                        if (inet_is_local_reserved_port(net, rover))
                                 continue;
                         index = sctp_phashfn(sock_net(sk), rover);
                         head = &sctp_port_hashtable[index];