diff options
Diffstat (limited to 'openbsc/src/abis_rsl.c')
| -rw-r--r-- | openbsc/src/abis_rsl.c | 43 |
1 files changed, 42 insertions, 1 deletions
diff --git a/openbsc/src/abis_rsl.c b/openbsc/src/abis_rsl.c index c07698530..c27fff1f7 100644 --- a/openbsc/src/abis_rsl.c +++ b/openbsc/src/abis_rsl.c @@ -1152,6 +1152,45 @@ static void t3111_expired(void *data) #define GSM48_LEN2PLEN(a) (((a) << 2) | 1) +/* Format an IMM ASS REJ according to 04.08 Chapter 9.1.20 */ +static int rsl_send_imm_ass_rej(struct gsm_bts *bts, + unsigned int num_req_refs, + struct gsm48_req_ref *rqd_refs, + uint8_t wait_ind) +{ + uint8_t buf[GSM_MACBLOCK_LEN]; + struct gsm48_imm_ass_rej *iar = (struct gsm48_imm_ass_rej *)buf; + + /* create IMMEDIATE ASSIGN REJECT 04.08 message */ + memset(iar, 0, sizeof(*iar)); + iar->proto_discr = GSM48_PDISC_RR; + iar->msg_type = GSM48_MT_RR_IMM_ASS; + iar->page_mode = GSM48_PM_SAME; + + memcpy(&iar->req_ref1, &rqd_refs[0], sizeof(iar->req_ref1)); + iar->wait_ind1 = wait_ind; + + if (num_req_refs >= 2) + memcpy(&iar->req_ref2, &rqd_refs[1], sizeof(iar->req_ref2)); + else + memcpy(&iar->req_ref2, &rqd_refs[0], sizeof(iar->req_ref2)); + iar->wait_ind2 = wait_ind; + + if (num_req_refs >= 3) + memcpy(&iar->req_ref3, &rqd_refs[2], sizeof(iar->req_ref3)); + else + memcpy(&iar->req_ref3, &rqd_refs[0], sizeof(iar->req_ref3)); + iar->wait_ind3 = wait_ind; + + if (num_req_refs >= 4) + memcpy(&iar->req_ref4, &rqd_refs[3], sizeof(iar->req_ref4)); + else + memcpy(&iar->req_ref4, &rqd_refs[0], sizeof(iar->req_ref4)); + iar->wait_ind4 = wait_ind; + + return rsl_imm_assign_cmd(bts, sizeof(iar), (uint8_t *) iar); +} + /* MS has requested a channel on the RACH */ static int rsl_rx_chan_rqd(struct msgb *msg) { @@ -1197,7 +1236,9 @@ static int rsl_rx_chan_rqd(struct msgb *msg) LOGP(DRSL, LOGL_NOTICE, "BTS %d CHAN RQD: no resources for %s 0x%x\n", msg->lchan->ts->trx->bts->nr, gsm_lchant_name(lctype), rqd_ref->ra); counter_inc(bts->network->stats.chreq.no_channel); - /* FIXME: send some kind of reject ?!? */ + /* FIXME gather multiple CHAN RQD and reject up to 4 at the same time */ + if (bts->network->T3122) + rsl_send_imm_ass_rej(bts, 1, rqd_ref, bts->network->T3122 & 0xff); return -ENOMEM; } |