netdev - [PATCH net 01/12] ipvlan: add get_link

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Message-Id: <b920e279472824d78949401e3bc837713d1f54ea.1600770261.git.sd@queasysnail.net>
Date:   Thu,  1 Oct 2020 09:59:25 +0200
From:   Sabrina Dubroca <sd@...asysnail.net>
To:     netdev@...r.kernel.org
Cc:     Sabrina Dubroca <sd@...asysnail.net>
Subject: [PATCH net 01/12] ipvlan: add get_link_net

Currently, ipvlan devices don't advertise a link-netnsid. We can get
it from the lower device, like macvlan does.

Signed-off-by: Sabrina Dubroca <sd@...asysnail.net>
---
 drivers/net/ipvlan/ipvlan_main.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/net/ipvlan/ipvlan_main.c b/drivers/net/ipvlan/ipvlan_main.c
index 5bca94c99006..a81bb68a5713 100644
--- a/drivers/net/ipvlan/ipvlan_main.c
+++ b/drivers/net/ipvlan/ipvlan_main.c
@@ -678,6 +678,14 @@ void ipvlan_link_setup(struct net_device *dev)
 }
 EXPORT_SYMBOL_GPL(ipvlan_link_setup);
 
+static struct net *ipvlan_get_link_net(const struct net_device *dev)
+{
+	struct ipvl_dev *ipvlan = netdev_priv(dev);
+	struct net_device *phy_dev = ipvlan->phy_dev;
+
+	return dev_net(phy_dev);
+}
+
 static const struct nla_policy ipvlan_nl_policy[IFLA_IPVLAN_MAX + 1] =
 {
 	[IFLA_IPVLAN_MODE] = { .type = NLA_U16 },
@@ -691,6 +699,7 @@ static struct rtnl_link_ops ipvlan_link_ops = {
 	.setup		= ipvlan_link_setup,
 	.newlink	= ipvlan_link_new,
 	.dellink	= ipvlan_link_delete,
+	.get_link_net	= ipvlan_get_link_net,
 };
 
 int ipvlan_link_register(struct rtnl_link_ops *ops)
-- 
2.28.0