diff options
| author | Holger Hans Peter Freyther <zecke@selfish.org> | 2009-10-23 13:01:18 +0200 |
|---|---|---|
| committer | Holger Hans Peter Freyther <zecke@selfish.org> | 2009-11-20 17:35:45 +0100 |
| commit | 3fe910b9f1391ff576e9583dc813f267f4e4cead (patch) | |
| tree | 627971edb135b1d01abe846a7efaa281a76e16c6 /openbsc/src/bssap.c | |
| parent | 097bdeb77de0aad435dc99a89ca1b586e8872b55 (diff) | |
[bssap] First go at implementing channel assignment...
Diffstat (limited to 'openbsc/src/bssap.c')
| -rw-r--r-- | openbsc/src/bssap.c | 41 |
1 files changed, 33 insertions, 8 deletions
diff --git a/openbsc/src/bssap.c b/openbsc/src/bssap.c index 63bcc956b..0343d6d84 100644 --- a/openbsc/src/bssap.c +++ b/openbsc/src/bssap.c @@ -24,6 +24,7 @@ #include <openbsc/gsm_04_08.h> #include <openbsc/gsm_subscriber.h> #include <openbsc/debug.h> +#include <openbsc/mgcp.h> #include <openbsc/signal.h> #include <openbsc/tlv.h> #include <openbsc/paging.h> @@ -251,7 +252,8 @@ static int bssmap_handle_assignm_req(struct sccp_connection *conn, { struct tlv_parsed tp; struct bss_sccp_connection_data *msc_data; - int ret = 0; + u_int8_t *data; + u_int8_t multiplex; if (!msg->lchan || !msg->lchan->msc_data) { DEBUGP(DMSC, "No lchan/msc_data in cipher mode command.\n"); @@ -271,19 +273,42 @@ static int bssmap_handle_assignm_req(struct sccp_connection *conn, goto reject; } + multiplex = TLVP_VAL(&tp, GSM0808_IE_CIRCUIT_IDENTITY_CODE)[1] & 0x1f; + /* - * currently only activation of speach on the - * existing channel is supported. This means we - * will send a Channel Modify message and take it - * from there. - * Setup channel type, timer + * Currently we only support a limited subset of all + * possible channel types. The limitation ends by not using + * multi-slot, limiting the channel coding, speech... */ - //gsm48_lchan_modify(); + if (TLVP_LEN(&tp, GSM0808_IE_CHANNEL_TYPE) != 3) { + DEBUGP(DMSC, "ChannelType len !=3 not supported: %d\n", + TLVP_LEN(&tp, GSM0808_IE_CHANNEL_TYPE)); + goto reject; + } + + data = (u_int8_t *) TLVP_VAL(&tp, GSM0808_IE_CHANNEL_TYPE); + if ((data[0] & 0xf) != 0x1) { + DEBUGP(DMSC, "ChannelType != speech: %d\n", data[0]); + goto reject; + } + if (data[1] != GSM0808_SPEECH_FULL_PREF) { + DEBUGP(DMSC, "ChannelType full not preferred: %d\n", data[1]); + goto reject; + } + + if (data[2] != GSM0808_PERM_FR2) { + DEBUGP(DMSC, "ChannelType FR2 not supported\n"); + goto reject; + } + + /* modify the channel now */ msc_data->T10.cb = bssmap_t10_fired; msc_data->T10.data = conn; bsc_schedule_timer(&msc_data->T10, GSM0808_T10_VALUE); - return ret; + + msc_data->rtp_port = rtp_calculate_port(multiplex, rtp_base_port); + return gsm48_lchan_modify(msg->lchan, GSM48_CMODE_SPEECH_EFR); reject: gsm0808_send_assignment_failure(msg->lchan, |