[TCP]: Use default 32768-61000 outgoing port range in all cases.

This diff changes the default port range used for outgoing connections,
from "use 32768-61000 in most cases, but use N-4999 on small boxes
(where N is a multiple of 1024, depending on just *how* small the box
is)" to just "use 32768-61000 in all cases".

I don't believe there are any drawbacks to this change, and it keeps
outgoing connection ports farther away from the mess of
IANA-registered ports.

Signed-off-by: Mark Glines <mark@glines.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 1 insertions, 6 deletions

diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
index 43fb1600f1f0..fbe7714f21d0 100644
--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -31,10 +31,8 @@ EXPORT_SYMBOL(inet_csk_timer_bug_msg);
 
 /*
  * This array holds the first and last local port number.
- * For high-usage systems, use sysctl to change this to
- * 32768-61000
  */
-int sysctl_local_port_range[2] = { 1024, 4999 };
+int sysctl_local_port_range[2] = { 32768, 61000 };
 
 int inet_csk_bind_conflict(const struct sock *sk,
                            const struct inet_bind_bucket *tb)
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 766314505c09..cd3c7e95de9e 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2464,13 +2464,10 @@ void __init tcp_init(void)
                         order++)
                 ;
         if (order >= 4) {
-                sysctl_local_port_range[0] = 32768;
-                sysctl_local_port_range[1] = 61000;
                 tcp_death_row.sysctl_max_tw_buckets = 180000;
                 sysctl_tcp_max_orphans = 4096 << (order - 4);
                 sysctl_max_syn_backlog = 1024;
         } else if (order < 3) {
-                sysctl_local_port_range[0] = 1024 * (3 - order);
                 tcp_death_row.sysctl_max_tw_buckets >>= (3 - order);
                 sysctl_tcp_max_orphans >>= (3 - order);
                 sysctl_max_syn_backlog = 128;