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authorMax <msuraev@sysmocom.de>2018-11-07 15:25:05 +0100
committerHarald Welte <laforge@gnumonks.org>2018-11-19 05:52:28 +0000
commited651d2485a51b57bf6090f4f58fd356118c6835 (patch)
tree1929899e80b7606e3211688a395d1cee3fab4705 /src/gsm/gsm0808_utils.c
parent84fb5bb6a09a6a358f98c654c84c3b99a0f24eef (diff)
Support cipher mode reject with extended cause
* add function to generate cipher mode reject with extended (2-byte) Cause IE * add function to get (extended) Cause value * add corresponding (extended cause) test * update existing (non-extended cause) test * use enum as a parameter for existing non-extended version to make interface more unified Change-Id: Id5509b94a18180a44f45300caaa02b843c166fa3 Related: OS#3187
Diffstat (limited to 'src/gsm/gsm0808_utils.c')
-rw-r--r--src/gsm/gsm0808_utils.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/src/gsm/gsm0808_utils.c b/src/gsm/gsm0808_utils.c
index 2348105d..c58d8284 100644
--- a/src/gsm/gsm0808_utils.c
+++ b/src/gsm/gsm0808_utils.c
@@ -1235,6 +1235,22 @@ void gsm48_mr_cfg_from_gsm0808_sc_cfg(struct gsm48_multi_rate_conf *cfg,
cfg->icmi = 1;
}
+int gsm0808_get_cipher_reject_cause(const struct tlv_parsed *tp)
+{
+ const uint8_t *buf = TLVP_VAL_MINLEN(tp, GSM0808_IE_CAUSE, 1);
+
+ if (!buf)
+ return -EBADMSG;
+
+ if (TLVP_LEN(tp, GSM0808_IE_CAUSE) > 1) {
+ if (!gsm0808_cause_ext(buf[0]))
+ return -EINVAL;
+ return buf[1];
+ }
+
+ return buf[0];
+}
+
/*! Print a human readable name of the cell identifier to the char buffer.
* This is useful both for struct gsm0808_cell_id and struct gsm0808_cell_id_list2.
* See also gsm0808_cell_id_name() and gsm0808_cell_id_list_name().