diff options
Diffstat (limited to 'src/libmsc/gsm_04_08.c')
| -rw-r--r-- | src/libmsc/gsm_04_08.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/libmsc/gsm_04_08.c b/src/libmsc/gsm_04_08.c index 563b83589..cceadcb88 100644 --- a/src/libmsc/gsm_04_08.c +++ b/src/libmsc/gsm_04_08.c @@ -84,6 +84,16 @@ static int gsm48_tx_simple(struct gsm_subscriber_connection *conn, static uint32_t new_callref = 0x80000001; +static bool classmark_is_r99(struct gsm_classmark *cm) +{ + int rev_lev = 0; + if (cm->classmark1_set) + rev_lev = cm->classmark1.rev_lev; + else if (cm->classmark2_len > 0) + rev_lev = (cm->classmark2[0] >> 5) & 0x3; + return rev_lev >= 2; +} + /* Determine if the given CLASSMARK (1/2/3) value permits a given A5/n cipher */ static bool classmark_supports_a5(const struct gsm_classmark *cm, uint8_t a5) { |