[src/trunk]: src/sys/net for bridge(4), report the common enabled capabilitie...

[jdolecek <jdolecek%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/7ec0f02c5621
branches:  trunk
changeset: 931759:7ec0f02c5621
user:      jdolecek <jdolecek%NetBSD.org@localhost>
date:      Thu Apr 30 10:04:54 2020 +0000

description:
for bridge(4), report the common enabled capabilities of the members
via SIOCGIFCAP for visibility

diffstat:

 sys/net/if_bridge.c |  15 +++++++++++++--
 1 files changed, 13 insertions(+), 2 deletions(-)

diffs (50 lines):

diff -r 9781b942fff9 -r 7ec0f02c5621 sys/net/if_bridge.c
--- a/sys/net/if_bridge.c       Thu Apr 30 07:07:22 2020 +0000
+++ b/sys/net/if_bridge.c       Thu Apr 30 10:04:54 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_bridge.c,v 1.171 2020/04/27 20:46:01 jdolecek Exp $ */
+/*     $NetBSD: if_bridge.c,v 1.172 2020/04/30 10:04:54 jdolecek Exp $ */
 
 /*
  * Copyright 2001 Wasabi Systems, Inc.
@@ -80,7 +80,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_bridge.c,v 1.171 2020/04/27 20:46:01 jdolecek Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_bridge.c,v 1.172 2020/04/30 10:04:54 jdolecek Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_bridge_ipf.h"
@@ -640,6 +640,14 @@
                        error = 0;
                break;
 
+        case SIOCGIFCAP:
+           {
+               struct ifcapreq *ifcr = (struct ifcapreq *)data;
+                ifcr->ifcr_capabilities = sc->sc_capenable;
+                ifcr->ifcr_capenable = sc->sc_capenable;
+               break;
+           }
+
        default:
                error = ifioctl_common(ifp, cmd, data);
                break;
@@ -781,13 +789,16 @@
        struct bridge_iflist *bif;
        struct ifnet *ifs;
        int flags = ~0;
+       int capenable = ~0;
 
        BRIDGE_LOCK(sc);
        BRIDGE_IFLIST_READER_FOREACH(bif, sc) {
                ifs = bif->bif_ifp;
                flags &= ifs->if_csum_flags_tx;
+               capenable &= ifs->if_capenable;
        }
        sc->sc_csum_flags_tx = flags;
+       sc->sc_capenable = capenable;
        BRIDGE_UNLOCK(sc);
 }