tcp/dccp: warn user for preferred ip_local_port_range

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After commit 07f4c90062 ("tcp/dccp: try to not exhaust
ip_local_port_range in connect()") it is advised to have an even number
of ports described in /proc/sys/net/ipv4/ip_local_port_range

This means start/end values should have a different parity.

Let's warn sysadmins of this, so that they can update their settings
if they want to.

Suggested-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Eric Dumazet 2015-05-27 11:34:37 -07:00 • committed by David S. Miller

parent e2baad9e4b

commit ed2dfd9009

2 changed files with 7 additions and 0 deletions

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1

include/net/netns/ipv4.h

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6

net/ipv4/sysctl_net_ipv4.c

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