lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Tue, 13 May 2014 09:10:19 -0700
From:	Stephen Hemminger <>
To:	Hagen Paul Pfeifer <>
Cc:, Cong Wang <>,
	Florian Westphal <>,
	netdev <>,
	Linus Torvalds <>
Subject: Re: [next PATCH 0/5] net: tcp: DCTCP congestion control algorithm -
 IPR Patent Issue

On Tue, 13 May 2014 18:02:37 +0200
Hagen Paul Pfeifer <> wrote:

> On 13 May 2014 17:18, Stephen Hemminger <> wrote:
> > This is not enough to allow distribution under GPL.
> > GPL has patent and redistribution clauses that as far as I know
> > are not compatible.
> Sure? IANAL, but as far as I know there is no such thing as "licence a
> *patent* under the GPL". Furthermore, GPLv2 state: "To prevent this,
> we have made it clear that any patent must be licensed for everyone's
> free use or not licensed at all." - this is fulfilled in my opinion.
>  I assume larger parts of the kernel are randomly covered by patents
> to some degree. The "advantage" here is that we know for sure that we
> can use this code without any potential patent claims (the good news
> in a bad world).
> But let other people decide if there is a problem with this particular IPR.
> Hagen

IANAL but my understanding is that FRAND and GPL are not by nature directly
compatible. It is possible for do it but only if the entity claiming IPR
gives a free license to all GPL users. This is the case of the recent Cisco
PIE implementation for example.
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to
More majordomo info at

Powered by blists - more mailing lists