[PATCH -net-next] net: psample: depends on INET

[PATCH -net-next] net: psample: depends on INET

[Randy Dunlap]

From: Randy Dunlap <rdunlap@infradead.org>

Fix psample build error when CONFIG_INET is not set/enabled.
PSAMPLE should depend on INET instead of NET since
ip_tunnel_info_opts() is only present for CONFIG_INET.

../net/psample/psample.c: In function ‘__psample_ip_tun_to_nlattr’:
../net/psample/psample.c:216:25: error: implicit declaration of function ‘ip_tunnel_info_opts’; did you mean ‘ip_tunnel_info_opts_set’? [-Werror=implicit-function-declaration]

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Yotam Gigi <yotam.gi@gmail.com>
---
This might be too stringent...

 net/psample/Kconfig |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- linux-next-20200522.orig/net/psample/Kconfig
+++ linux-next-20200522/net/psample/Kconfig
@@ -4,7 +4,7 @@
 #
 
 menuconfig PSAMPLE
-	depends on NET
+	depends on INET
 	tristate "Packet-sampling netlink channel"
 	default n
 	help

Re: [PATCH -net-next] net: psample: depends on INET

[Cong Wang]

On Fri, May 22, 2020 at 12:03 PM Randy Dunlap <rdunlap@infradead.org> wrote:
>
> From: Randy Dunlap <rdunlap@infradead.org>
>
> Fix psample build error when CONFIG_INET is not set/enabled.
> PSAMPLE should depend on INET instead of NET since
> ip_tunnel_info_opts() is only present for CONFIG_INET.
>
> ../net/psample/psample.c: In function ‘__psample_ip_tun_to_nlattr’:
> ../net/psample/psample.c:216:25: error: implicit declaration of function ‘ip_tunnel_info_opts’; did you mean ‘ip_tunnel_info_opts_set’? [-Werror=implicit-function-declaration]

Or just make this tunnel support optional. psample does not
require it to function correctly.

Thanks.

Re: [PATCH -net-next] net: psample: depends on INET

[Randy Dunlap]

On 5/22/20 12:17 PM, Cong Wang wrote:
> On Fri, May 22, 2020 at 12:03 PM Randy Dunlap <rdunlap@infradead.org> wrote:
>>
>> From: Randy Dunlap <rdunlap@infradead.org>
>>
>> Fix psample build error when CONFIG_INET is not set/enabled.
>> PSAMPLE should depend on INET instead of NET since
>> ip_tunnel_info_opts() is only present for CONFIG_INET.
>>
>> ../net/psample/psample.c: In function ‘__psample_ip_tun_to_nlattr’:
>> ../net/psample/psample.c:216:25: error: implicit declaration of function ‘ip_tunnel_info_opts’; did you mean ‘ip_tunnel_info_opts_set’? [-Werror=implicit-function-declaration]
> 
> Or just make this tunnel support optional. psample does not
> require it to function correctly.

Sure, I thought of that, but it's not clear to me which bits of it
to make optional, so I'll leave it for its maintainer to handle.

thanks.
-- 
~Randy

Re: [PATCH -net-next] net: psample: depends on INET

[Cong Wang]

On Fri, May 22, 2020 at 12:48 PM Randy Dunlap <rdunlap@infradead.org> wrote:
>
> On 5/22/20 12:17 PM, Cong Wang wrote:
> > On Fri, May 22, 2020 at 12:03 PM Randy Dunlap <rdunlap@infradead.org> wrote:
> >>
> >> From: Randy Dunlap <rdunlap@infradead.org>
> >>
> >> Fix psample build error when CONFIG_INET is not set/enabled.
> >> PSAMPLE should depend on INET instead of NET since
> >> ip_tunnel_info_opts() is only present for CONFIG_INET.
> >>
> >> ../net/psample/psample.c: In function ‘__psample_ip_tun_to_nlattr’:
> >> ../net/psample/psample.c:216:25: error: implicit declaration of function ‘ip_tunnel_info_opts’; did you mean ‘ip_tunnel_info_opts_set’? [-Werror=implicit-function-declaration]
> >
> > Or just make this tunnel support optional. psample does not
> > require it to function correctly.
>
> Sure, I thought of that, but it's not clear to me which bits of it
> to make optional, so I'll leave it for its maintainer to handle.

The code commit d8bed686ab96169ac80b497d1cbed89300d97f83
adds is optional, so it can be just put into #ifdef's.

Thanks.