Move gtp related functions to gtp.h

The functions are implemented in sgsn_libgtp.c and hence belong to
header file gtp.h

Change-Id: I7f5cf2895b05e03435769548b61051e6284ccb3c

include/osmocom/sgsn/gtp.h

@@ -1,8 +1,30 @@
 #pragma once
 
+#include <stddef.h>
+#include <stdint.h>
+
+#include <osmocom/gsm/tlv.h>
+#include <osmocom/gprs/gprs_bssgp_rim.h>
+
+struct gprs_ra_id;
 struct sgsn_instance;
+struct sgsn_ggsn_ctx;
+struct sgsn_pdp_ctx;
+struct sgsn_mm_ctx;
+struct sgsn_mme_ctx;
 
 int sgsn_gtp_init(struct sgsn_instance *sgi);
 
+int sgsn_mme_ran_info_req(struct sgsn_mme_ctx *mme, const struct bssgp_ran_information_pdu *pdu);
+
+void sgsn_ggsn_echo_req(struct sgsn_ggsn_ctx *ggc);
+struct sgsn_pdp_ctx *sgsn_create_pdp_ctx(struct sgsn_ggsn_ctx *ggsn,
+					 struct sgsn_mm_ctx *mmctx,
+					 uint16_t nsapi,
+					 struct tlv_parsed *tp);
+
 int sgsn_gtp_data_req(struct gprs_ra_id *ra_id, int32_t tlli, uint8_t nsapi,
 		      struct msgb *msg, uint32_t npdu_len, uint8_t *npdu);
+int sgsn_delete_pdp_ctx(struct sgsn_pdp_ctx *pctx);
+void sgsn_pdp_upd_gtp_u(struct sgsn_pdp_ctx *pdp, void *addr, size_t alen);
+int send_act_pdp_cont_acc(struct sgsn_pdp_ctx *pctx);

include/osmocom/sgsn/sgsn.h

@@ -168,18 +168,6 @@ char *sgsn_gtp_ntoa(struct ul16_t *ul);
 /* sgsn.c */
 struct sgsn_instance *sgsn_instance_alloc(void *talloc_ctx);
 int sgsn_inst_init(struct sgsn_instance *sgsn);
-
-/* sgsn_libgtp.c */
-struct sgsn_pdp_ctx *sgsn_create_pdp_ctx(struct sgsn_ggsn_ctx *ggsn,
-					 struct sgsn_mm_ctx *mmctx,
-					 uint16_t nsapi,
-					 struct tlv_parsed *tp);
-int sgsn_delete_pdp_ctx(struct sgsn_pdp_ctx *pctx);
-void sgsn_pdp_upd_gtp_u(struct sgsn_pdp_ctx *pdp, void *addr, size_t alen);
-void sgsn_ggsn_echo_req(struct sgsn_ggsn_ctx *ggc);
-int send_act_pdp_cont_acc(struct sgsn_pdp_ctx *pctx);
-int sgsn_mme_ran_info_req(struct sgsn_mme_ctx *mme, const struct bssgp_ran_information_pdu *pdu);
-
 /*
  * CDR related functionality
  */

src/sgsn/gprs_gmm.c

@@ -61,6 +61,7 @@
 #include <osmocom/sgsn/gprs_sndcp.h>
 #include <osmocom/sgsn/gprs_ranap.h>
 #include <osmocom/sgsn/gprs_sm.h>
+#include <osmocom/sgsn/gtp.h>
 
 #include <pdp.h>
 

src/sgsn/gprs_mm_state_iu_fsm.c

@@ -29,6 +29,7 @@
 #include <osmocom/sgsn/debug.h>
 #include <osmocom/sgsn/sgsn.h>
 #include <osmocom/sgsn/gprs_ranap.h>
+#include <osmocom/sgsn/gtp.h>
 
 #define X(s) (1 << (s))
 

src/sgsn/gprs_ranap.c

@@ -38,6 +38,7 @@
 #include <osmocom/sgsn/gprs_gmm_attach.h>
 #include <osmocom/sgsn/gprs_mm_state_iu_fsm.h>
 #include <osmocom/sgsn/gtp_ggsn.h>
+#include <osmocom/sgsn/gtp.h>
 
 /* Send RAB activation requests for all PDP contexts */
 void activate_pdp_rabs(struct sgsn_mm_ctx *ctx)

src/sgsn/gprs_sgsn.c

@@ -51,6 +51,7 @@
 #include <osmocom/sgsn/gprs_llc.h>
 #include <osmocom/sgsn/gprs_sndcp.h>
 #include <osmocom/sgsn/gtp_ggsn.h>
+#include <osmocom/sgsn/gtp.h>
 
 #include <pdp.h>
 

src/sgsn/gprs_sm.c

@@ -42,6 +42,7 @@
 #include <osmocom/sgsn/gprs_llc.h>
 #include <osmocom/sgsn/gprs_sndcp.h>
 #include <osmocom/sgsn/gprs_ranap.h>
+#include <osmocom/sgsn/gtp.h>
 
 extern void *tall_sgsn_ctx;
 

src/sgsn/gtp_ggsn.c

@@ -29,6 +29,7 @@
 #include <osmocom/core/stats.h>
 
 #include <osmocom/sgsn/gtp_ggsn.h>
+#include <osmocom/sgsn/gtp.h>
 #include <osmocom/sgsn/sgsn.h>
 #include <osmocom/sgsn/debug.h>
 #include <osmocom/sgsn/gprs_gmm_fsm.h>

src/sgsn/sgsn_rim.c

@@ -12,6 +12,7 @@
 #include <osmocom/gprs/gprs_bssgp_rim.h>
 #include <osmocom/sgsn/sgsn_rim.h>
 #include <osmocom/sgsn/gtp_mme.h>
+#include <osmocom/sgsn/gtp.h>
 #include <osmocom/sgsn/debug.h>
 #include <osmocom/sgsn/sgsn.h>