diff options
Diffstat (limited to 'include/osmocom')
| -rw-r--r-- | include/osmocom/gsm/tlv.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/osmocom/gsm/tlv.h b/include/osmocom/gsm/tlv.h index 1ab964ad..51bedd64 100644 --- a/include/osmocom/gsm/tlv.h +++ b/include/osmocom/gsm/tlv.h @@ -324,6 +324,18 @@ static inline uint8_t *msgb_v_put(struct msgb *msg, uint8_t val) return v_put(buf, val); } +/*! put (append) a TL fields to a \ref msgb + * \returns pointer to the length field so it can be updated after adding new information under specified tag */ +static inline uint8_t *msgb_tl_put(struct msgb *msg, uint8_t tag) +{ + uint8_t *len = msgb_v_put(msg, tag); + + /* reserve space for length, len points to this reserved space already */ + msgb_v_put(msg, 0); + + return len; +} + /*! put (append) a TV16 field to a \ref msgb * \returns pointer to first byte after newly-put information */ static inline uint8_t *msgb_tv16_put(struct msgb *msg, uint8_t tag, uint16_t val) |