dccp: Cleanup routines for feature negotiation

This inserts the required de-allocation routines for memory allocated by 
feature negotiation in the socket destructors, replacing dccp_feat_clean()
in one instance.

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Acked-by: Ian McDonald <ian.mcdonald@jandi.co.nz>

1 files changed, 2 insertions, 0 deletions

diff --git a/net/dccp/dccp.h b/net/dccp/dccp.h
index ab096c06bba0..dee4a90886d6 100644
--- a/net/dccp/dccp.h
+++ b/net/dccp/dccp.h
@@ -442,6 +442,8 @@ static inline int dccp_ack_pending(const struct sock *sk)
                inet_csk_ack_scheduled(sk);
 }
 
+extern void dccp_feat_list_purge(struct list_head *fn_list);
+
 extern int dccp_insert_options(struct sock *sk, struct sk_buff *skb);
 extern int dccp_insert_options_rsk(struct dccp_request_sock*, struct sk_buff*);
 extern int dccp_insert_option_elapsed_time(struct sock *sk,