Move out tbf subclasses from tbf.h to their own headers

It's a good start towards clearing current mess between parent and the 2
children classes.

Change-Id: Ibc22ea2e02609af7ee058b8bc15df2115d4c6f60

1 files changed, 138 insertions, 0 deletions

diff --git a/src/tbf_ul.h b/src/tbf_ul.h
new file mode 100644
index 00000000..85da4f61
--- /dev/null
+++ b/src/tbf_ul.h
@@ -0,0 +1,138 @@
+/*
+ * Copyright (C) 2013 by Holger Hans Peter Freyther
+ * Copyright (C) 2019 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+#pragma once
+
+#ifdef __cplusplus
+
+#include "tbf.h"
+/*
+ * TBF instance
+ */
+
+enum tbf_gprs_ul_counters {
+        TBF_CTR_GPRS_UL_CS1,
+        TBF_CTR_GPRS_UL_CS2,
+        TBF_CTR_GPRS_UL_CS3,
+        TBF_CTR_GPRS_UL_CS4,
+};
+
+enum tbf_egprs_ul_counters {
+        TBF_CTR_EGPRS_UL_MCS1,
+        TBF_CTR_EGPRS_UL_MCS2,
+        TBF_CTR_EGPRS_UL_MCS3,
+        TBF_CTR_EGPRS_UL_MCS4,
+        TBF_CTR_EGPRS_UL_MCS5,
+        TBF_CTR_EGPRS_UL_MCS6,
+        TBF_CTR_EGPRS_UL_MCS7,
+        TBF_CTR_EGPRS_UL_MCS8,
+        TBF_CTR_EGPRS_UL_MCS9,
+};
+
+#define LOGPTBFUL(tbf, level, fmt, args...) LOGP(DTBFUL, level, "%s " fmt, tbf_name(tbf), ## args)
+
+struct gprs_rlcmac_ul_tbf : public gprs_rlcmac_tbf {
+	gprs_rlcmac_ul_tbf(BTS *bts);
+	gprs_rlc_ul_window *window();
+	struct msgb *create_ul_ack(uint32_t fn, uint8_t ts);
+	bool ctrl_ack_to_toggle();
+	bool handle_ctrl_ack();
+	void enable_egprs();
+	/* blocks were acked */
+	int rcv_data_block_acknowledged(
+		const struct gprs_rlc_data_info *rlc,
+		uint8_t *data, struct pcu_l1_meas *meas);
+
+
+	/* TODO: extract LLC class? */
+	int assemble_forward_llc(const gprs_rlc_data *data);
+	int snd_ul_ud();
+
+	egprs_rlc_ul_reseg_bsn_state handle_egprs_ul_spb(
+		const struct gprs_rlc_data_info *rlc,
+		struct gprs_rlc_data *block,
+		uint8_t *data, const uint8_t block_idx);
+
+	egprs_rlc_ul_reseg_bsn_state handle_egprs_ul_first_seg(
+		const struct gprs_rlc_data_info *rlc,
+		struct gprs_rlc_data *block,
+		uint8_t *data, const uint8_t block_idx);
+
+	egprs_rlc_ul_reseg_bsn_state handle_egprs_ul_second_seg(
+		const struct gprs_rlc_data_info *rlc,
+		struct gprs_rlc_data *block,
+		uint8_t *data, const uint8_t block_idx);
+
+	uint16_t window_size() const;
+	void set_window_size();
+	void update_coding_scheme_counter_ul(enum CodingScheme cs);
+
+	/* Please note that all variables here will be reset when changing
+	 * from WAIT RELEASE back to FLOW state (re-use of TBF).
+	 * All states that need reset must be in this struct, so this is why
+	 * variables are in both (dl and ul) structs and not outside union.
+	 */
+	int32_t m_rx_counter; /* count all received blocks */
+	uint8_t m_usf[8];	/* list USFs per PDCH (timeslot) */
+	uint8_t m_contention_resolution_done; /* set after done */
+	uint8_t m_final_ack_sent; /* set if we sent final ack */
+
+	struct rate_ctr_group *m_ul_gprs_ctrs;
+	struct rate_ctr_group *m_ul_egprs_ctrs;
+
+protected:
+	void maybe_schedule_uplink_acknack(const gprs_rlc_data_info *rlc);
+
+	/* Please note that all variables below will be reset when changing
+	 * from WAIT RELEASE back to FLOW state (re-use of TBF).
+	 * All states that need reset must be in this struct, so this is why
+	 * variables are in both (dl and ul) structs and not outside union.
+	 */
+	gprs_rlc_ul_window m_window;
+};
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+void update_tbf_ta(struct gprs_rlcmac_ul_tbf *tbf, int8_t ta_delta);
+void set_tbf_ta(struct gprs_rlcmac_ul_tbf *tbf, uint8_t ta);
+#ifdef __cplusplus
+}
+#endif
+
+inline uint16_t gprs_rlcmac_ul_tbf::window_size() const
+{
+	return m_window.ws();
+}
+
+inline void gprs_rlcmac_ul_tbf::enable_egprs()
+{
+	m_window.set_sns(RLC_EGPRS_SNS);
+	gprs_rlcmac_tbf::enable_egprs();
+}
+
+inline gprs_rlcmac_ul_tbf *as_ul_tbf(gprs_rlcmac_tbf *tbf)
+{
+	if (tbf && tbf->direction == GPRS_RLCMAC_UL_TBF)
+		return static_cast<gprs_rlcmac_ul_tbf *>(tbf);
+	else
+		return NULL;
+}
+
+#endif