From: bjorn@mork.no (Bjørn Mork)
To: kernelnewbies@lists.kernelnewbies.org
Subject: Would like know when the tcp sequence no is rollover
Date: Fri, 18 Sep 2015 09:50:20 +0200 [thread overview]
Message-ID: <87si6cf9oj.fsf@nemi.mork.no> (raw)
In-Reply-To: <CAL2CrsPuyh6viz5gdEZbP3Erv-Y3Ws-Em9y_Ow3HNWtsbSfNjA@mail.gmail.com> (Ramana Reddy's message of "Fri, 18 Sep 2015 12:21:59 +0530")
Ramana Reddy <gtvrreddy@gmail.com> writes:
> Hi all,
>
> I would like to know, when the TCP sequence no is rollover.
> Who will do it. Is it happens in tcp code or through the hardware.
> If is it is in the tcp code, can some one please point the code in the
> linux kernel
> where it happens.
Why this interest in TCP sequence numbers?
I believe RFC793 is a better source for understanding how this works:
It is essential to remember that the actual sequence number space is
finite, though very large. This space ranges from 0 to 2**32 - 1.
Since the space is finite, all arithmetic dealing with sequence
numbers must be performed modulo 2**32.
Do you still think you'll find an explicit rollover code path? Why would
you write code like that?
Bj?rn
next prev parent reply other threads:[~2015-09-18 7:50 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-18 6:51 Would like know when the tcp sequence no is rollover Ramana Reddy
2015-09-18 7:50 ` Bjørn Mork [this message]
[not found] ` <CAL2CrsNq3RKSKnJgtsz+RjhgVypjbawYADubjos+fNKTL6d4qg@mail.gmail.com>
2015-09-20 9:19 ` Ramana Reddy
2015-09-20 9:33 ` Bjørn Mork
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