diff options
Diffstat (limited to 'openbsc/src/gsm_04_08.c')
| -rw-r--r-- | openbsc/src/gsm_04_08.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/openbsc/src/gsm_04_08.c b/openbsc/src/gsm_04_08.c index dc8567077..d6fe09fa2 100644 --- a/openbsc/src/gsm_04_08.c +++ b/openbsc/src/gsm_04_08.c @@ -1674,6 +1674,10 @@ static int gsm0408_rcv_rr(struct msgb *msg) case GSM48_MT_RR_APP_INFO: rc = gsm48_rx_rr_app_info(msg); break; + case GSM48_MT_RR_CIPH_M_COMPL: + DEBUGP(DRR, "CIPHERING MODE COMPLETE\n"); + /* FIXME: check for MI (if any) */ + break; default: fprintf(stderr, "Unimplemented GSM 04.08 RR msg type 0x%02x\n", gh->msg_type); @@ -1683,6 +1687,29 @@ static int gsm0408_rcv_rr(struct msgb *msg) return rc; } +/* Chapter 9.1.9: Ciphering Mode Command */ +int gsm48_send_rr_ciph_mode(struct gsm_lchan *lchan) +{ + struct msgb *msg = gsm48_msgb_alloc(); + struct gsm48_hdr *gh; + u_int8_t ciph_mod_set; + + msg->lchan = lchan; + + DEBUGP(DRR, "TX CIPHERING MODE CMD\n"); + + if (lchan->encr.alg_id <= RSL_ENC_ALG_A5(0)) + ciph_mod_set = 0; + else + ciph_mod_set = (lchan->encr.alg_id-2)<<1 | 1; + + gh = (struct gsm48_hdr *) msgb_put(msg, sizeof(*gh) + 1); + gh->proto_discr = GSM48_PDISC_RR; + gh->msg_type = GSM48_MT_RR_CIPH_M_CMD; + gh->data[0] = 0x10 | (ciph_mod_set & 0xf); + + return rsl_encryption_cmd(msg); +} int gsm48_send_rr_app_info(struct gsm_lchan *lchan, u_int8_t apdu_id, u_int8_t apdu_len, u_int8_t *apdu) |