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authorMax <msuraev@sysmocom.de>2018-11-07 13:16:54 +0100
committerHarald Welte <laforge@gnumonks.org>2018-11-18 20:14:06 +0000
commitaa934630530af05a84b62b204ce4da7688c5e3ad (patch)
tree34eb73668b997ca14a5d81b286a6b6d23cda6e0c /include/osmocom/gsm/gsm0808_utils.h
parentc0d1de36f3e378364b1c02e98a3870394e3d457e (diff)
Update 3GPP TS 08.08 Cause handling
* add Class definitions * add helper to check for extended bit * add helper to get Cause's Class * use enum in gsm0808_cause_name() and gsm0808_create_cipher_reject() to avoid confusion between class and cause * update gsm0808_create_cipher_reject() comments Change-Id: I31b31dfc22eb4b6b07089e1255246ac458125340 Related: OS#3187
Diffstat (limited to 'include/osmocom/gsm/gsm0808_utils.h')
-rw-r--r--include/osmocom/gsm/gsm0808_utils.h15
1 files changed, 14 insertions, 1 deletions
diff --git a/include/osmocom/gsm/gsm0808_utils.h b/include/osmocom/gsm/gsm0808_utils.h
index f70dbdb6..b56e2635 100644
--- a/include/osmocom/gsm/gsm0808_utils.h
+++ b/include/osmocom/gsm/gsm0808_utils.h
@@ -107,7 +107,20 @@ int gsm0808_speech_codec_from_chan_type(struct gsm0808_speech_codec *sc,
uint16_t gsm0808_sc_cfg_from_gsm48_mr_cfg(const struct gsm48_multi_rate_conf *cfg, bool fr);
void gsm48_mr_cfg_from_gsm0808_sc_cfg(struct gsm48_multi_rate_conf *cfg, uint16_t s15_s0);
-/*! Return 3GPP TS 48.008 3.2.2.49 Current Channel Type 1 from enum gsm_chan_t. */
+/*! \returns 3GPP TS 08.08 §3.2.2.5 Class of a given Cause */
+static inline enum gsm0808_cause_class gsm0808_cause_class(enum gsm0808_cause cause)
+{
+ return (cause << 1) >> 4;
+}
+
+/*! \returns true if 3GPP TS 08.08 §3.2.2.5 Class has extended bit set */
+static inline bool gsm0808_cause_ext(enum gsm0808_cause cause)
+{
+ /* check that cause looks like 1XXX0000 where XXX represent class */
+ return (cause & 0x80) && !(cause & 0x0F);
+}
+
+/*! \returns 3GPP TS 48.008 3.2.2.49 Current Channel Type 1 from enum gsm_chan_t. */
static inline uint8_t gsm0808_current_channel_type_1(enum gsm_chan_t type)
{
switch (type) {