* compilation error on centos 7 kernels
@ 2018-07-30 3:26 Yousong Zhou
2018-07-30 3:27 ` Yousong Zhou
0 siblings, 1 reply; 6+ messages in thread
From: Yousong Zhou @ 2018-07-30 3:26 UTC (permalink / raw)
To: WireGuard mailing list
Yesterday I tried compiling openvswitch-dkms on 2 centos 7 systems,
both failed out of box because of the compat conditional compilation
code
Both system has LINUX_VERSION_CODE 199168, i.e. 3.10.0. The 1st runs
kernel 3.10.0-514.26.2.el7.x86_64, and the second runs
3.10.0-693.2.2.el7.x86_64. They both lacks skb_reset_tc,
our_pskb_put(), genl_family_attrbuf(), skb_put_data(). And the
3.10.0-514 kernel also lacks ipv6_mod_enabled() so I had to prepare
different dkms patches for them ;( . The bright side is that currently
both systems work fine ;)
It's partially caused by commit 401453 ("compat: handle RHEL 7.5's
recent backports"), but I think the code will be very hard to read and
maintain if we continue to use the current macro detection logic. I
remembered openvswitch linux kernel datapath module was already in
such an state. Maybe compile test will do better.
yousong
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: compilation error on centos 7 kernels
2018-07-30 3:26 compilation error on centos 7 kernels Yousong Zhou
@ 2018-07-30 3:27 ` Yousong Zhou
2018-07-30 3:29 ` Jason A. Donenfeld
0 siblings, 1 reply; 6+ messages in thread
From: Yousong Zhou @ 2018-07-30 3:27 UTC (permalink / raw)
To: WireGuard mailing list
On Mon, 30 Jul 2018 at 11:26, Yousong Zhou <yszhou4tech@gmail.com> wrote:
>
> Yesterday I tried compiling openvswitch-dkms on 2 centos 7 systems,
> both failed out of box because of the compat conditional compilation
> code
>
Forgot to mention that the openvswitch-dkms version in use is 0.0.20180718
yousong
> Both system has LINUX_VERSION_CODE 199168, i.e. 3.10.0. The 1st runs
> kernel 3.10.0-514.26.2.el7.x86_64, and the second runs
> 3.10.0-693.2.2.el7.x86_64. They both lacks skb_reset_tc,
> our_pskb_put(), genl_family_attrbuf(), skb_put_data(). And the
> 3.10.0-514 kernel also lacks ipv6_mod_enabled() so I had to prepare
> different dkms patches for them ;( . The bright side is that currently
> both systems work fine ;)
>
> It's partially caused by commit 401453 ("compat: handle RHEL 7.5's
> recent backports"), but I think the code will be very hard to read and
> maintain if we continue to use the current macro detection logic. I
> remembered openvswitch linux kernel datapath module was already in
> such an state. Maybe compile test will do better.
>
> yousong
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: compilation error on centos 7 kernels
2018-07-30 3:27 ` Yousong Zhou
@ 2018-07-30 3:29 ` Jason A. Donenfeld
2018-07-30 3:34 ` Yousong Zhou
0 siblings, 1 reply; 6+ messages in thread
From: Jason A. Donenfeld @ 2018-07-30 3:29 UTC (permalink / raw)
To: Yousong Zhou; +Cc: WireGuard mailing list
Update to the latest available centos kernel in the latest available
centos release, and then after install WireGuard. If you're facing
problems then, email a compilation log.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: compilation error on centos 7 kernels
2018-07-30 3:29 ` Jason A. Donenfeld
@ 2018-07-30 3:34 ` Yousong Zhou
2018-07-30 7:42 ` Greg KH
0 siblings, 1 reply; 6+ messages in thread
From: Yousong Zhou @ 2018-07-30 3:34 UTC (permalink / raw)
To: Jason A. Donenfeld; +Cc: WireGuard mailing list
On Mon, 30 Jul 2018 at 11:29, Jason A. Donenfeld <Jason@zx2c4.com> wrote:
>
> Update to the latest available centos kernel in the latest available
> centos release, and then after install WireGuard. If you're facing
> problems then, email a compilation log.
Well, better add a note in the installation page about the
update-to-date kernel version expectation. The other thing is that
it's not always that feasible to switch kernel version in enterprise
managed environment
yousong
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: compilation error on centos 7 kernels
2018-07-30 3:34 ` Yousong Zhou
@ 2018-07-30 7:42 ` Greg KH
2018-07-30 8:27 ` Yousong Zhou
0 siblings, 1 reply; 6+ messages in thread
From: Greg KH @ 2018-07-30 7:42 UTC (permalink / raw)
To: Yousong Zhou; +Cc: WireGuard mailing list
On Mon, Jul 30, 2018 at 11:34:31AM +0800, Yousong Zhou wrote:
> On Mon, 30 Jul 2018 at 11:29, Jason A. Donenfeld <Jason@zx2c4.com> wrote:
> >
> > Update to the latest available centos kernel in the latest available
> > centos release, and then after install WireGuard. If you're facing
> > problems then, email a compilation log.
>
> Well, better add a note in the installation page about the
> update-to-date kernel version expectation. The other thing is that
> it's not always that feasible to switch kernel version in enterprise
> managed environment
But it is allowed to add random kernel modules to such an enviroment?
You can't have it both ways, someone needs to work to fix such a
horrible management policy that it sounds like you have. Good luck!
greg k-h
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: compilation error on centos 7 kernels
2018-07-30 7:42 ` Greg KH
@ 2018-07-30 8:27 ` Yousong Zhou
0 siblings, 0 replies; 6+ messages in thread
From: Yousong Zhou @ 2018-07-30 8:27 UTC (permalink / raw)
To: gregkh; +Cc: WireGuard mailing list
On Mon, 30 Jul 2018 at 15:42, Greg KH <gregkh@linuxfoundation.org> wrote:
>
> On Mon, Jul 30, 2018 at 11:34:31AM +0800, Yousong Zhou wrote:
> > On Mon, 30 Jul 2018 at 11:29, Jason A. Donenfeld <Jason@zx2c4.com> wrote:
> > >
> > > Update to the latest available centos kernel in the latest available
> > > centos release, and then after install WireGuard. If you're facing
> > > problems then, email a compilation log.
> >
> > Well, better add a note in the installation page about the
> > update-to-date kernel version expectation. The other thing is that
> > it's not always that feasible to switch kernel version in enterprise
> > managed environment
>
> But it is allowed to add random kernel modules to such an enviroment?
> You can't have it both ways, someone needs to work to fix such a
> horrible management policy that it sounds like you have. Good luck!
>
> greg k-h
It's not okay to have random modules in any environment. Sorry for
the noise if it's already widely known that wireguard kernel module
support for rhel/centos *expects* recent kernel revisions of these
distro.
yousong
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2018-07-30 8:17 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
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2018-07-30 3:26 compilation error on centos 7 kernels Yousong Zhou
2018-07-30 3:27 ` Yousong Zhou
2018-07-30 3:29 ` Jason A. Donenfeld
2018-07-30 3:34 ` Yousong Zhou
2018-07-30 7:42 ` Greg KH
2018-07-30 8:27 ` Yousong Zhou
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