From: Eric Dumazet eduma...@google.com
When an application needs to force a source IP on an active TCP socket
it has to use bind(IP, port=x).
As most applications do not want to deal with already used ports, x is
often set to 0, meaning the kernel is in charge to find an available
port.
But
Hmm, I certainly like this.
So IMHO this is indeed much better than a sysctl to select a magic
port to ignore during a bind call (previous internal patchset),
although it does use up one more bit per socket (and one more syscall
per connect).
---
Thinking about this some more, I think it might
On Sat, Jun 6, 2015 at 11:53 AM, Eric Dumazet eric.duma...@gmail.com wrote:
From: Eric Dumazet eduma...@google.com
...
This patch adds a new SOL_IP socket option, asking kernel to ignore
the 0 port provided by application in bind(IP, port=0) and only
remember the given IP address.
...
This
On Sat, 2015-06-06 at 22:30 -0400, Neal Cardwell wrote:
I like this a lot. This addresses a very serious gap in the sockets
API, and should be very useful. The comment mentions that this is
available for IPv6. From skimming the change I would have expected
inet6_bind() would need a change
On Sat, 2015-06-06 at 18:38 +0200, Maciej Żenczykowski wrote:
Hmm, I certainly like this.
So IMHO this is indeed much better than a sysctl to select a magic
port to ignore during a bind call (previous internal patchset),
although it does use up one more bit per socket (and one more syscall
Please do not top-post.
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