ip6_gre: ip6gre_tap device should keep dst

lxin · davem330 · commit 2d40557cc702 · 2017-10-01T03:46:42.000+01:00
The patch 'ip_gre: ipgre_tap device should keep dst' fixed
a issue that ipgre_tap mtu couldn't be updated in tx path.

The same fix is needed for ip6gre_tap as well.

Signed-off-by: Xin Long &lt;lucien.xin@gmail.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c
@@ -1311,6 +1311,7 @@ static void ip6gre_tap_setup(struct net_device *dev)
 	dev->features |= NETIF_F_NETNS_LOCAL;
 	dev->priv_flags &= ~IFF_TX_SKB_SHARING;
 	dev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
+	netif_keep_dst(dev);
 }
 
 static bool ip6gre_netlink_encap_parms(struct nlattr *data[],

Original file line number	Diff line number	Diff line change
`@@ -1311,6 +1311,7 @@ static void ip6gre_tap_setup(struct net_device *dev)`
`1311`	`1311`	`dev->features \|= NETIF_F_NETNS_LOCAL;`
`1312`	`1312`	`dev->priv_flags &= ~IFF_TX_SKB_SHARING;`
`1313`	`1313`	`dev->priv_flags \|= IFF_LIVE_ADDR_CHANGE;`
	`1314`	`+ netif_keep_dst(dev);`
`1314`	`1315`	`}`
`1315`	`1316`
`1316`	`1317`	`static bool ip6gre_netlink_encap_parms(struct nlattr *data[],`