Re: git: 63613e3ba1e1 - main - wg: Use ENETUNREACH when transmitting to a non-existent peer

I can confirm this fixes https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=266712 <https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=266712> .

> On Apr 2, 2024, at 1:23 AM, Mark Johnston <markj@freebsd.org> wrote:
> 
> The branch main has been updated by markj:
> 
> URL: https://cgit.FreeBSD.org/src/commit/?id=63613e3ba1e188e9fece43e1613bd697f04b345e
> 
> commit 63613e3ba1e188e9fece43e1613bd697f04b345e
> Author:     Mark Johnston <markj@FreeBSD.org>
> AuthorDate: 2024-04-01 17:20:55 +0000
> Commit:     Mark Johnston <markj@FreeBSD.org>
> CommitDate: 2024-04-01 17:23:32 +0000
> 
>    wg: Use ENETUNREACH when transmitting to a non-existent peer
> 
>    The old errno value used is specifically for Capsicum and shouldn't be
>    co-opted in this way.  It has special handling in the generic syscall
>    layer (see syscallret()).  OpenBSD returns ENETUNREACH in this case;
>    let's do the same thing.
> 
>    Reviewed by:    kevans, imp
>    MFC after:      2 weeks
>    Sponsored by:   Klara, Inc.
>    Differential Revision:  https://reviews.freebsd.org/D44582
> ---
> sys/dev/wg/if_wg.c | 5 +----
> 1 file changed, 1 insertion(+), 4 deletions(-)
> 
> diff --git a/sys/dev/wg/if_wg.c b/sys/dev/wg/if_wg.c
> index 42c426ac1819..bb61917ee4fc 100644
> --- a/sys/dev/wg/if_wg.c
> +++ b/sys/dev/wg/if_wg.c
> @@ -251,9 +251,6 @@ struct wg_softc {
> 
> #define MAX_LOOPS	8
> #define MTAG_WGLOOP	0x77676c70 /* wglp */
> -#ifndef ENOKEY
> -#define	ENOKEY	ENOTCAPABLE
> -#endif
> 
> #define	GROUPTASK_DRAIN(gtask)			\
> 	gtaskqueue_drain((gtask)->gt_taskqueue, &(gtask)->gt_task)
> @@ -2115,7 +2112,7 @@ wg_xmit(if_t ifp, struct mbuf *m, sa_family_t af, uint32_t mtu)
> 	BPF_MTAP2_AF(ifp, m, pkt->p_af);
> 
> 	if (__predict_false(peer == NULL)) {
> -		rc = ENOKEY;
> +		rc = ENETUNREACH;
> 		goto err_xmit;
> 	}
>