sctp: move global declaration to header file.

sctp_chunk_cachep & sctp_bucket_cachep is used module global, so move it
to a header file.

Signed-off-by: Sebastian Siewior <[e-mail]>
Signed-off-by: Vlad Yasevich <[e-mail]>

include/net/sctp/sctp.h

···
 
 
 /*
+ * Module global variables
+ */
+
+ /*
+  * sctp/protocol.c
+  */
+extern struct kmem_cache *sctp_chunk_cachep __read_mostly;
+extern struct kmem_cache *sctp_bucket_cachep __read_mostly;
+
+/*
  *  Section:  Macros, externs, and inlines
  */
 

net/sctp/sm_make_chunk.c

···
 #include <net/sctp/sctp.h>
 #include <net/sctp/sm.h>
 
-extern struct kmem_cache *sctp_chunk_cachep;
-
 SCTP_STATIC
 struct sctp_chunk *sctp_make_chunk(const struct sctp_association *asoc,
 				   __u8 type, __u8 flags, int paylen);

net/sctp/socket.c

···
 			      struct sctp_association *, sctp_socket_type_t);
 static char *sctp_hmac_alg = SCTP_COOKIE_HMAC_ALG;
 
-extern struct kmem_cache *sctp_bucket_cachep;
-
 /* Get the sndbuf space available at the time on the association.  */
 static inline int sctp_wspace(struct sctp_association *asoc)
 {