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[PATCH 4.11 034/115] geneve: fix fill_info when using collect_metadata

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  [PATCH 4.11 034/115] geneve: fix fill_info when using collect_metadata Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-06-05 18:50 +0200

#1657862 — [PATCH 4.11 034/115] geneve: fix fill_info when using collect_metadata

4.11-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Eric Garver <e@erig.me>


[ Upstream commit 11387fe4a98f75d1f4cdb3efe3b42b19205c9df5 ]

Since 9b4437a5b870 ("geneve: Unify LWT and netdev handling.") fill_info
does not return UDP_ZERO_CSUM6_RX when using COLLECT_METADATA. This is
because it uses ip_tunnel_info_af() with the device level info, which is
not valid for COLLECT_METADATA.

Fix by checking for the presence of the actual sockets.

Fixes: 9b4437a5b870 ("geneve: Unify LWT and netdev handling.")
Signed-off-by: Eric Garver <e@erig.me>
Acked-by: Pravin B Shelar <pshelar@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/geneve.c |    8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

--- a/drivers/net/geneve.c
+++ b/drivers/net/geneve.c
@@ -1293,7 +1293,7 @@ static int geneve_fill_info(struct sk_bu
 	if (nla_put_u32(skb, IFLA_GENEVE_ID, vni))
 		goto nla_put_failure;
 
-	if (ip_tunnel_info_af(info) == AF_INET) {
+	if (rtnl_dereference(geneve->sock4)) {
 		if (nla_put_in_addr(skb, IFLA_GENEVE_REMOTE,
 				    info->key.u.ipv4.dst))
 			goto nla_put_failure;
@@ -1302,8 +1302,10 @@ static int geneve_fill_info(struct sk_bu
 			       !!(info->key.tun_flags & TUNNEL_CSUM)))
 			goto nla_put_failure;
 
+	}
+
 #if IS_ENABLED(CONFIG_IPV6)
-	} else {
+	if (rtnl_dereference(geneve->sock6)) {
 		if (nla_put_in6_addr(skb, IFLA_GENEVE_REMOTE6,
 				     &info->key.u.ipv6.dst))
 			goto nla_put_failure;
@@ -1315,8 +1317,8 @@ static int geneve_fill_info(struct sk_bu
 		if (nla_put_u8(skb, IFLA_GENEVE_UDP_ZERO_CSUM6_RX,
 			       !geneve->use_udp6_rx_checksums))
 			goto nla_put_failure;
-#endif
 	}
+#endif
 
 	if (nla_put_u8(skb, IFLA_GENEVE_TTL, info->key.ttl) ||
 	    nla_put_u8(skb, IFLA_GENEVE_TOS, info->key.tos) ||

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