diff options
| author | Vadim Yanitskiy <axilirator@gmail.com> | 2018-08-03 05:44:00 +0700 |
|---|---|---|
| committer | Vadim Yanitskiy <axilirator@gmail.com> | 2018-08-05 23:21:43 +0700 |
| commit | 30cfeeb4a0a3992b55a48c3ccefc91f727ef079e (patch) | |
| tree | c472c5ebf8f720228175c3a606de24992c1780f5 /src/gsm/gsm48.c | |
| parent | 39a36d01932867f780474f4b17bf42224cd57edb (diff) | |
libosmogsm: (re)introduce gsm48_push_l3hdr()
There was gsm0480_l3hdr_push() declared in a header file, but
not exposed in 'libosmogsm.map'. Furthermore, for some reason
it was a part of GSM 04.80 API, what is not actually correct.
Let's rename this symbol, and properly expose it as a part of
the GSM 04.08 API. Also, let's introduce an auxiliary wrapper
for messages, where the transaction identifier is required
(see GSM 04.07, section 11.2.3.1.2).
Change-Id: I8a045efe8335d83fcbe8d43eb180972e3b1d9dda
Diffstat (limited to 'src/gsm/gsm48.c')
| -rw-r--r-- | src/gsm/gsm48.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/gsm/gsm48.c b/src/gsm/gsm48.c index b4892dea..136b9375 100644 --- a/src/gsm/gsm48.c +++ b/src/gsm/gsm48.c @@ -1024,4 +1024,24 @@ const struct value_string gsm48_reject_value_names[] = { { 0, NULL } }; +/*! Wrap a given \ref msg with \ref gsm48_hdr structure + * \param[out] msg A message to be wrapped + * \param[in] pdisc GSM TS 04.07 protocol discriminator 1/2, + * sub-pdisc, trans_id or skip_ind 1/2, + * see section 11.2.3.1 for details + * \param[in] msg_type GSM TS 04.08 message type + * @return pointer to pushed header within \ref msg + */ +struct gsm48_hdr *gsm48_push_l3hdr(struct msgb *msg, + uint8_t pdisc, uint8_t msg_type) +{ + struct gsm48_hdr *gh; + + gh = (struct gsm48_hdr *) msgb_push(msg, sizeof(*gh)); + gh->proto_discr = pdisc; + gh->msg_type = msg_type; + + return gh; +} + /*! @} */ |