gsm_08_58.h: introduce RSL_CHAN_NR_1 constant
Using the RSL_CHAN_* constants, we sometimes need to add 1 to the chan bits
to indicate e.g. the second TCH/H channel.
RSL_CHAN_NR_1 marks this lowest channel bit that needs to be added.
The name is analogous to RSL_CHAN_NR_MASK.
Change-Id: Iea06432039d1cd23cc6b5acec308bb829b596d47
diff --git a/include/osmocom/gsm/protocol/gsm_08_58.h b/include/osmocom/gsm/protocol/gsm_08_58.h
index 56cf4dd..18bee82 100644
--- a/include/osmocom/gsm/protocol/gsm_08_58.h
+++ b/include/osmocom/gsm/protocol/gsm_08_58.h
@@ -297,6 +297,7 @@
/* Chapter 9.3.1 */
#define RSL_CHAN_NR_MASK 0xf8
+#define RSL_CHAN_NR_1 0x08 /*< bit to add for 2nd,... lchan */
#define RSL_CHAN_Bm_ACCHs 0x08
#define RSL_CHAN_Lm_ACCHs 0x10 /* .. 0x18 */
#define RSL_CHAN_SDCCH4_ACCH 0x20 /* .. 0x38 */