From: bluhm <bluhm@openbsd.org>
Date: Fri, 13 Jul 2018 08:51:15 +0000 (+0000)
Subject: Some USB network interfaces like rum(4) report ENXIO from their
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=273c5eebb1898b077ab2647196c09b22ebfed46e;p=openbsd

Some USB network interfaces like rum(4) report ENXIO from their
ioctl function after the device has been pulled out.  Also accept
this error code in bpf_detachd() to prevent a kernel panic.  tcpdump(8)
may run while the interface is detached.
from Moritz Buhl; OK stsp@
---

diff --git a/sys/net/bpf.c b/sys/net/bpf.c
index a6bcf31d471..d3cffa592c9 100644
--- a/sys/net/bpf.c
+++ b/sys/net/bpf.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: bpf.c,v 1.169 2018/03/02 16:57:41 bluhm Exp $	*/
+/*	$OpenBSD: bpf.c,v 1.170 2018/07/13 08:51:15 bluhm Exp $	*/
 /*	$NetBSD: bpf.c,v 1.33 1997/02/21 23:59:35 thorpej Exp $	*/
 
 /*
@@ -332,7 +332,8 @@ bpf_detachd(struct bpf_d *d)
 		mtx_enter(&d->bd_mtx);
 		bpf_put(d);
 
-		if (error && !(error == EINVAL || error == ENODEV))
+		if (error && !(error == EINVAL || error == ENODEV ||
+		    error == ENXIO))
 			/*
 			 * Something is really wrong if we were able to put
 			 * the driver into promiscuous mode, but can't