From: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Date: Wed, 15 Mar 2023 08:33:02 -0700
Subject: [PATCH] vlan: partially enable SIOCSHWTSTAMP in container
References: bsc#1012628
Patch-mainline: 6.3.2
Git-commit: 731b73dba359e3ff00517c13aa0daa82b34ff466

[ Upstream commit 731b73dba359e3ff00517c13aa0daa82b34ff466 ]

Setting timestamp filter was explicitly disabled on vlan devices in
containers because it might affect other processes on the host. But it's
absolutely legit in case when real device is in the same namespace.

Fixes: 873017af7784 ("vlan: disable SIOCSHWTSTAMP in container")
Signed-off-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 net/8021q/vlan_dev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
index 296d0145..5920544e 100644
--- a/net/8021q/vlan_dev.c
+++ b/net/8021q/vlan_dev.c
@@ -365,7 +365,7 @@ static int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 
 	switch (cmd) {
 	case SIOCSHWTSTAMP:
-		if (!net_eq(dev_net(dev), &init_net))
+		if (!net_eq(dev_net(dev), dev_net(real_dev)))
 			break;
 		fallthrough;
 	case SIOCGMIIPHY:
-- 
2.35.3