dyn TS: fix: e1_config.c: switch(pchan) for dyn TS

Add ts_is_tch() in gsm_data_shared.h/.c and use it to replace a switch on the
pchan in e1_config.c.

This patch is not due to an actual observed failure. A general grep for switch
on pchan turned up this instance that doesn't handle dyn TS properly. Hence
this patch is not actually tested with real equipment.

Change-Id: Ide4f156034bab77140d2d9a8c462d68ae6f0d6a6

1 files changed, 16 insertions, 0 deletions

diff --git a/openbsc/src/libcommon/gsm_data_shared.c b/openbsc/src/libcommon/gsm_data_shared.c
index 371e47909..4eea21e7b 100644
--- a/openbsc/src/libcommon/gsm_data_shared.c
+++ b/openbsc/src/libcommon/gsm_data_shared.c
@@ -747,3 +747,19 @@ uint8_t ts_subslots(struct gsm_bts_trx_ts *ts)
 {
 	return subslots_per_pchan[ts_pchan(ts)];
 }
+
+static bool pchan_is_tch(enum gsm_phys_chan_config pchan)
+{
+	switch (pchan) {
+	case GSM_PCHAN_TCH_F:
+	case GSM_PCHAN_TCH_H:
+		return true;
+	default:
+		return false;
+	}
+}
+
+bool ts_is_tch(struct gsm_bts_trx_ts *ts)
+{
+	return pchan_is_tch(ts_pchan(ts));
+}