Introduce FSM mm_state_gb_fsm
Implement TS 23.060 6.1.1 Mobility Management States (A/Gb mode) using
osmocom FSM and drop old implementation.
Most of the logic on each state is still kept in gprs_gmm.c, will be
inserted into the FSM later.
Change-Id: I04004423e993107374d5a3549b8a93ac169251dd
diff --git a/include/osmocom/sgsn/Makefile.am b/include/osmocom/sgsn/Makefile.am
index b91c9f1..d6ee445 100644
--- a/include/osmocom/sgsn/Makefile.am
+++ b/include/osmocom/sgsn/Makefile.am
@@ -7,6 +7,7 @@
gprs_gb_parse.h \
gprs_gmm.h \
gprs_gmm_attach.h \
+ gprs_mm_state_gb_fsm.h \
gprs_llc.h \
gprs_llc_xid.h \
gprs_ranap.h \
diff --git a/include/osmocom/sgsn/gprs_gmm.h b/include/osmocom/sgsn/gprs_gmm.h
index 6c72cda..2fa12e5 100644
--- a/include/osmocom/sgsn/gprs_gmm.h
+++ b/include/osmocom/sgsn/gprs_gmm.h
@@ -50,8 +50,6 @@
void pdp_ctx_detach_mm_ctx(struct sgsn_pdp_ctx *pdp);
void mmctx_set_pmm_state(struct sgsn_mm_ctx *ctx, enum gprs_mm_state_iu state);
-void mmctx_state_timer_start(struct sgsn_mm_ctx *mm, unsigned int T);
-void mmctx_set_mm_state(struct sgsn_mm_ctx *ctx, enum gprs_mm_state_gb state);
void msgid2mmctx(struct sgsn_mm_ctx *mm, const struct msgb *msg);
#endif /* _GPRS_GMM_H */
diff --git a/include/osmocom/sgsn/gprs_mm_state_gb_fsm.h b/include/osmocom/sgsn/gprs_mm_state_gb_fsm.h
new file mode 100644
index 0000000..e69e1e1
--- /dev/null
+++ b/include/osmocom/sgsn/gprs_mm_state_gb_fsm.h
@@ -0,0 +1,26 @@
+#pragma once
+
+#include <osmocom/core/fsm.h>
+
+struct sgsn_mm_ctx;
+
+
+/* TS 23.060 6.1.1 Mobility Management States (A/Gb mode) */
+enum mm_state_gb_fsm_states {
+ ST_MM_IDLE,
+ ST_MM_READY,
+ ST_MM_STANDBY
+};
+
+enum mm_state_gb_fsm_events {
+ E_MM_GPRS_ATTACH,
+ /* E_GPRS_DETACH, TODO: not used */
+ E_MM_PDU_RECEPTION,
+ E_MM_IMPLICIT_DETACH, /* = E_MM_CANCEL_LOCATION */
+ E_MM_READY_TIMER_EXPIRY,
+ /* E_FORCE_TO_STANDBY, TODO: not used */
+ /* E_ABNSORMAL_RLC_CONDITION, TODO: not used */
+ E_MM_RA_UPDATE,
+};
+
+extern struct osmo_fsm mm_state_gb_fsm;
diff --git a/include/osmocom/sgsn/gprs_sgsn.h b/include/osmocom/sgsn/gprs_sgsn.h
index f64e07b..382019c 100644
--- a/include/osmocom/sgsn/gprs_sgsn.h
+++ b/include/osmocom/sgsn/gprs_sgsn.h
@@ -32,12 +32,6 @@
GMM_DEREGISTERED_INIT, /* 4.1.3.3.1.4 */
};
-/* TS 23.060 6.1.1 Mobility Management States (A/Gb mode) */
-enum gprs_mm_state_gb {
- MM_IDLE,
- MM_READY,
- MM_STANDBY
-};
/* TS 23.060 6.1.2 Mobility Management States (Iu mode) */
enum gprs_mm_state_iu {
PMM_DETACHED,
@@ -161,10 +155,7 @@
uint32_t tlli_new;
/* TS 23.060 6.1.1 Mobility Management States (A/Gb mode) */
- enum gprs_mm_state_gb mm_state;
- /* timer for mm state. state=READY: T3314 (aka TS 23.060 "READY timer") */
- struct osmo_timer_list state_timer;
- unsigned int state_T; /* Txxxx number but only used for mm_state */
+ struct osmo_fsm_inst *mm_state_fsm;
} gb;
struct {
int new_key;