From 29e0d65d7a6bff9008cdb2f72b29e91aad1a99f8 Mon Sep 17 00:00:00 2001
From: "Alexander V. Chernikov" <melifaro@FreeBSD.org>
Date: Fri, 16 Jan 2015 10:09:28 +0000
Subject: [PATCH] Eliminate SIOCGIFADDR handling in bpf.

Quoting 19 years bpf.4 manual from bpf-1.2a1:
"
(SIOCGIFADDR is obsolete under BSD systems.  SIOCGIFCONF should be
 used to query link-level addresses.)
"
* SIOCGIFADDR was not imported in NetBSD (bpf.c 1.36) and OpenBSD.
* Last bits (e.g. manpage claiming SIOCGIFADDR exists) was cleaned
  from NetBSD via kern/21513 5 years ago,
  from OpenBSD via documentation/6352 5 years ago.
---
 share/man/man4/bpf.4 |  2 --
 sys/net/bpf.c        | 14 --------------
 2 files changed, 16 deletions(-)

diff --git a/share/man/man4/bpf.4 b/share/man/man4/bpf.4
index 072f8e099f42..01cd0eaef7db 100644
--- a/share/man/man4/bpf.4
+++ b/share/man/man4/bpf.4
@@ -290,8 +290,6 @@ and
 .Pp
 In addition to
 .Dv FIONREAD
-and
-.Dv SIOCGIFADDR ,
 the following commands may be applied to any open
 .Nm
 file.
diff --git a/sys/net/bpf.c b/sys/net/bpf.c
index 156153953498..a04fdef436f4 100644
--- a/sys/net/bpf.c
+++ b/sys/net/bpf.c
@@ -1192,7 +1192,6 @@ reset_d(struct bpf_d *d)
 
 /*
  *  FIONREAD		Check for read packet available.
- *  SIOCGIFADDR		Get interface address - convenient hook to driver.
  *  BIOCGBLEN		Get buffer len [for read()].
  *  BIOCSETF		Set read filter.
  *  BIOCSETFNR		Set read filter without resetting descriptor.
@@ -1322,19 +1321,6 @@ bpfioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flags,
 			break;
 		}
 
-	case SIOCGIFADDR:
-		{
-			struct ifnet *ifp;
-
-			if (d->bd_bif == NULL)
-				error = EINVAL;
-			else {
-				ifp = d->bd_bif->bif_ifp;
-				error = (*ifp->if_ioctl)(ifp, cmd, addr);
-			}
-			break;
-		}
-
 	/*
 	 * Get buffer len [for read()].
 	 */