* [PATCH] tunnels: correct conditional build of MPLS
@ 2016-07-10 0:20 Simon Horman
2016-07-10 1:12 ` Simon Horman
0 siblings, 1 reply; 2+ messages in thread
From: Simon Horman @ 2016-07-10 0:20 UTC (permalink / raw)
To: David Miller; +Cc: netdev, Simon Horman
* If MPLS is not enabled then err_mpls is not needed
* If IPV6 is not enabled then unregistering IPPROTO_IPV6 is not
needed in the error path and err_ipv6 is not needed
* When unregistering IPPROTO_IPV6 the tunnel64_protocol structure
rather than the tunnel4_protocol structure should be used.
* If neither MPLS nor IPV6 are enabled then unregistering IPPROTO_IPIP
is not needed in the error path
Fixes: 8afe97e5d416 ("tunnels: support MPLS over IPv4 tunnels")
Signed-off-by: Simon Horman <simon.horman@netronome.com>
---
net/ipv4/tunnel4.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/net/ipv4/tunnel4.c b/net/ipv4/tunnel4.c
index 45cd4253583a..1dd098b890a7 100644
--- a/net/ipv4/tunnel4.c
+++ b/net/ipv4/tunnel4.c
@@ -219,12 +219,16 @@ static int __init tunnel4_init(void)
#endif
return 0;
-#if IS_ENABLED(CONFIG_IPV6)
+#if IS_ENABLED(CONFIG_MPLS)
err_mpls:
- inet_del_protocol(&tunnel4_protocol, IPPROTO_IPV6);
#endif
+#if IS_ENABLED(CONFIG_IPV6)
+ inet_del_protocol(&tunnel64_protocol, IPPROTO_IPV6);
err_ipv6:
+#endif
+#if IS_ENABLED(CONFIG_MPLS) || IS_ENABLED(CONFIG_IPV6)
inet_del_protocol(&tunnel4_protocol, IPPROTO_IPIP);
+#endif
err_ipip:
pr_err("%s: can't add protocol\n", __func__);
return -EAGAIN;
--
2.7.0.rc3.207.g0ac5344
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] tunnels: correct conditional build of MPLS
2016-07-10 0:20 [PATCH] tunnels: correct conditional build of MPLS Simon Horman
@ 2016-07-10 1:12 ` Simon Horman
0 siblings, 0 replies; 2+ messages in thread
From: Simon Horman @ 2016-07-10 1:12 UTC (permalink / raw)
To: David Miller; +Cc: netdev
On Sun, Jul 10, 2016 at 09:20:54AM +0900, Simon Horman wrote:
> * If MPLS is not enabled then err_mpls is not needed
> * If IPV6 is not enabled then unregistering IPPROTO_IPV6 is not
> needed in the error path and err_ipv6 is not needed
> * When unregistering IPPROTO_IPV6 the tunnel64_protocol structure
> rather than the tunnel4_protocol structure should be used.
> * If neither MPLS nor IPV6 are enabled then unregistering IPPROTO_IPIP
> is not needed in the error path
>
> Fixes: 8afe97e5d416 ("tunnels: support MPLS over IPv4 tunnels")
> Signed-off-by: Simon Horman <simon.horman@netronome.com>
I realised this still has some problems. I will send v2.
> ---
> net/ipv4/tunnel4.c | 8 ++++++--
> 1 file changed, 6 insertions(+), 2 deletions(-)
>
> diff --git a/net/ipv4/tunnel4.c b/net/ipv4/tunnel4.c
> index 45cd4253583a..1dd098b890a7 100644
> --- a/net/ipv4/tunnel4.c
> +++ b/net/ipv4/tunnel4.c
> @@ -219,12 +219,16 @@ static int __init tunnel4_init(void)
> #endif
> return 0;
>
> -#if IS_ENABLED(CONFIG_IPV6)
> +#if IS_ENABLED(CONFIG_MPLS)
> err_mpls:
> - inet_del_protocol(&tunnel4_protocol, IPPROTO_IPV6);
> #endif
> +#if IS_ENABLED(CONFIG_IPV6)
> + inet_del_protocol(&tunnel64_protocol, IPPROTO_IPV6);
> err_ipv6:
> +#endif
> +#if IS_ENABLED(CONFIG_MPLS) || IS_ENABLED(CONFIG_IPV6)
> inet_del_protocol(&tunnel4_protocol, IPPROTO_IPIP);
> +#endif
> err_ipip:
> pr_err("%s: can't add protocol\n", __func__);
> return -EAGAIN;
> --
> 2.7.0.rc3.207.g0ac5344
>
^ permalink raw reply [flat|nested] 2+ messages in thread
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