diff options
| -rw-r--r-- | include/osmocom/gsm/protocol/gsm_04_08.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/osmocom/gsm/protocol/gsm_04_08.h b/include/osmocom/gsm/protocol/gsm_04_08.h index 49e977b0..d49b77fe 100644 --- a/include/osmocom/gsm/protocol/gsm_04_08.h +++ b/include/osmocom/gsm/protocol/gsm_04_08.h @@ -763,6 +763,25 @@ static inline uint8_t gsm48_hdr_pdisc(const struct gsm48_hdr *hdr) return pdisc; } +static inline uint8_t gsm48_hdr_trans_id(const struct gsm48_hdr *hdr) +{ + /* + * 3GPP TS 24.007 version 12.0.0 Release 12, + * 11.2.3.1.3 Transaction identifier + */ + return (hdr->proto_discr & 0xf0) >> 4; +} + +static inline uint8_t gsm48_hdr_trans_id_flip_ti(const struct gsm48_hdr *hdr) +{ + return gsm48_hdr_trans_id(hdr) ^ 0x08; +} + +static inline uint8_t gsm48_hdr_trans_id_no_ti(const struct gsm48_hdr *hdr) +{ + return gsm48_hdr_trans_id(hdr) & 0x07; +} + static inline uint8_t gsm48_hdr_msg_type_r98(const struct gsm48_hdr *hdr) { /* |