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

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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>
This commit is contained in:
Mark Glines
2007-05-31 15:44:48 -07:00
committed by David S. Miller
parent 278a3de5ab
commit 3f196eb519
2 changed files with 1 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
net/ipv4/inet_connection_sock.c
View File

@@ -31,10 +31,8 @@ EXPORT_SYMBOL(inet_csk_timer_bug_msg);
/* /*
* This array holds the first and last local port number. * 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, int inet_csk_bind_conflict(const struct sock *sk,
const struct inet_bind_bucket *tb) const struct inet_bind_bucket *tb)

3
net/ipv4/tcp.c
View File

@@ -2464,13 +2464,10 @@ void __init tcp_init(void)
order++) order++)
; ;
if (order >= 4) { if (order >= 4) {
sysctl_local_port_range[0] = 32768;
sysctl_local_port_range[1] = 61000;
tcp_death_row.sysctl_max_tw_buckets = 180000; tcp_death_row.sysctl_max_tw_buckets = 180000;
sysctl_tcp_max_orphans = 4096 << (order - 4); sysctl_tcp_max_orphans = 4096 << (order - 4);
sysctl_max_syn_backlog = 1024; sysctl_max_syn_backlog = 1024;
} else if (order < 3) { } else if (order < 3) {
sysctl_local_port_range[0] = 1024 * (3 - order);
tcp_death_row.sysctl_max_tw_buckets >>= (3 - order); tcp_death_row.sysctl_max_tw_buckets >>= (3 - order);
sysctl_tcp_max_orphans >>= (3 - order); sysctl_tcp_max_orphans >>= (3 - order);
sysctl_max_syn_backlog = 128; sysctl_max_syn_backlog = 128;