gsm/sms: Rewrite of SMC process, extracted from OpenBSC
The SMC process is used to transfer RP frames. It is now extracted from
OpenBSC. It includes a real state machine now for easier debugging.
Written-by: Andreas Eversberg <jolly@eversberg.eu>
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
diff --git a/include/osmocom/gsm/gsm0411_smc.h b/include/osmocom/gsm/gsm0411_smc.h
new file mode 100644
index 0000000..e1508a2
--- /dev/null
+++ b/include/osmocom/gsm/gsm0411_smc.h
@@ -0,0 +1,62 @@
+#ifndef _GSM0411_SMC_H
+#define _GSM0411_SMC_H
+
+#include <osmocom/gsm/protocol/gsm_04_11.h>
+
+#define GSM411_MMSMS_EST_REQ 0x310
+#define GSM411_MMSMS_EST_IND 0x312
+#define GSM411_MMSMS_EST_CNF 0x311
+#define GSM411_MMSMS_REL_REQ 0x320
+#define GSM411_MMSMS_REL_IND 0x322
+#define GSM411_MMSMS_DATA_REQ 0x330
+#define GSM411_MMSMS_DATA_IND 0x332
+#define GSM411_MMSMS_UNIT_DATA_REQ 0x340
+#define GSM411_MMSMS_UNIT_DATA_IND 0x342
+#define GSM411_MMSMS_ERR_IND 0x372
+
+#define GSM411_MNSMS_ABORT_REQ 0x101
+#define GSM411_MNSMS_DATA_REQ 0x102
+#define GSM411_MNSMS_DATA_IND 0x103
+#define GSM411_MNSMS_EST_REQ 0x104
+#define GSM411_MNSMS_EST_IND 0x105
+#define GSM411_MNSMS_ERROR_IND 0x106
+#define GSM411_MNSMS_REL_REQ 0x107
+
+struct gsm411_smc_inst {
+ int network; /* is this a MO (0) or MT (1) transfer */
+ int (*mn_recv) (struct gsm411_smc_inst *inst, int msg_type,
+ struct msgb *msg);
+ int (*mm_send) (struct gsm411_smc_inst *inst, int msg_type,
+ struct msgb *msg, int cp_msg_type);
+
+ enum gsm411_cp_state cp_state;
+ struct osmo_timer_list cp_timer;
+ struct msgb *cp_msg; /* store pending message */
+ int cp_rel; /* store pending release */
+ int cp_retx; /* retry counter */
+ int cp_max_retr; /* maximum retry */
+ int cp_tc1; /* timer value TC1* */
+
+};
+
+extern const struct value_string gsm411_cp_cause_strs[];
+
+/* init a new instance */
+void gsm411_smc_init(struct gsm411_smc_inst *inst, int network,
+ int (*mn_recv) (struct gsm411_smc_inst *inst, int msg_type,
+ struct msgb *msg),
+ int (*mm_send) (struct gsm411_smc_inst *inst, int msg_type,
+ struct msgb *msg, int cp_msg_type));
+
+/* clear instance */
+void gsm411_smc_clear(struct gsm411_smc_inst *inst);
+
+/* message from upper layer */
+int gsm411_smc_send(struct gsm411_smc_inst *inst, int msg_type,
+ struct msgb *msg);
+
+/* message from lower layer */
+int gsm411_smc_recv(struct gsm411_smc_inst *inst, int msg_type,
+ struct msgb *msg, int cp_msg_type);
+
+#endif /* _GSM0411_SMC_H */