rename lchan->rqd_ta to last_ta

Originally, the lchan stored only the Timing Advance from the initial
channel request, hence it was called rqd_ta.

Since quite a while now, rqd_ta also stores the most recent Timing
Advance from each received Measurement Report. So rename to last_ta.

This is cosmetic preparation for an upcoming patch that clarifies
whether the Timing Advance is already known for Channel Activation.

Change-Id: I1049526a173819baeb4978db5bf018ba3f1006a0

1 files changed, 3 insertions, 1 deletions

diff --git a/include/osmocom/bsc/gsm_data.h b/include/osmocom/bsc/gsm_data.h
index 8b539028c..6cb3cf0a4 100644
--- a/include/osmocom/bsc/gsm_data.h
+++ b/include/osmocom/bsc/gsm_data.h
@@ -657,7 +657,9 @@ struct gsm_lchan {
 		} ass_compl;
 	} abis_ip;
 
-	uint8_t rqd_ta;
+	/* At first, the Timing Advance from the initial Channel Request. Later, the Timing Advance value received from
+	 * the most recent Measurement Report. */
+	uint8_t last_ta;
 
 	/* table of neighbor cell measurements */
 	struct neigh_meas_proc neigh_meas[MAX_NEIGH_MEAS];