net: Specify the owning module for lwtunnel ops

[ Upstream commit 88ff7334f25909802140e690c0e16433e485b0a0 ]

Modules implementing lwtunnel ops should not be allowed to unload
while there is state alive using those ops, so specify the owning
module for all lwtunnel ops.

Signed-off-by: Robert Shearman <rshearma@brocade.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/net/lwtunnel.h b/include/net/lwtunnel.h
index 95581ca69f0f..3e0a7a942a0e 100644
--- a/include/net/lwtunnel.h
+++ b/include/net/lwtunnel.h
@@ -43,6 +43,8 @@ struct lwtunnel_encap_ops {
         int (*get_encap_size)(struct lwtunnel_state *lwtstate);
         int (*cmp_encap)(struct lwtunnel_state *a, struct lwtunnel_state *b);
         int (*xmit)(struct sk_buff *skb);
+
+        struct module *owner;
 };
 
 #ifdef CONFIG_LWTUNNEL