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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Taehee Yoo <ap420073@gmail.com>,
        "David S. Miller" <davem@davemloft.net>
Subject: [PATCH 4.9 049/102] hsr: set .netnsok flag
Date:   Wed,  1 Apr 2020 18:17:52 +0200
Message-Id: <20200401161542.271967081@linuxfoundation.org>
In-Reply-To: <20200401161530.451355388@linuxfoundation.org>
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From: Taehee Yoo <ap420073@gmail.com>

[ Upstream commit 09e91dbea0aa32be02d8877bd50490813de56b9a ]

The hsr module has been supporting the list and status command.
(HSR_C_GET_NODE_LIST and HSR_C_GET_NODE_STATUS)
These commands send node information to the user-space via generic netlink.
But, in the non-init_net namespace, these commands are not allowed
because .netnsok flag is false.
So, there is no way to get node information in the non-init_net namespace.

Fixes: f421436a591d ("net/hsr: Add support for the High-availability Seamless Redundancy protocol (HSRv0)")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/hsr/hsr_netlink.c |    1 +
 1 file changed, 1 insertion(+)

--- a/net/hsr/hsr_netlink.c
+++ b/net/hsr/hsr_netlink.c
@@ -137,6 +137,7 @@ static struct genl_family hsr_genl_famil
 	.name = "HSR",
 	.version = 1,
 	.maxattr = HSR_A_MAX,
+	.netnsok = true,
 };
 
 static const struct genl_multicast_group hsr_mcgrps[] = {