| Neels Hofmeyr | ac85b34 | 2018-07-12 21:23:26 +0200 | [diff] [blame] | 1 | /* osmo-bsc API to manage lchans, logical channels in GSM cells. */ |
| 2 | #pragma once |
| 3 | |
| 4 | #define LOG_LCHAN_RTP(lchan, level, fmt, args...) do { \ |
| 5 | if (lchan->fi_rtp) \ |
| 6 | LOGPFSML(lchan->fi_rtp, level, fmt, ## args); \ |
| 7 | else \ |
| 8 | LOGP(DLMGCP, level, "%s (not initialized) " fmt, gsm_lchan_name(lchan), \ |
| 9 | ## args); \ |
| 10 | } while(0) |
| 11 | |
| 12 | struct gsm_lchan; |
| 13 | |
| 14 | enum lchan_rtp_fsm_state { |
| 15 | LCHAN_RTP_ST_WAIT_MGW_ENDPOINT_AVAILABLE, |
| 16 | LCHAN_RTP_ST_WAIT_LCHAN_READY, |
| 17 | LCHAN_RTP_ST_WAIT_IPACC_CRCX_ACK, |
| 18 | LCHAN_RTP_ST_WAIT_IPACC_MDCX_ACK, |
| 19 | LCHAN_RTP_ST_WAIT_READY_TO_SWITCH_RTP, |
| 20 | LCHAN_RTP_ST_WAIT_MGW_ENDPOINT_CONFIGURED, |
| 21 | LCHAN_RTP_ST_READY, |
| 22 | LCHAN_RTP_ST_ROLLBACK, |
| 23 | LCHAN_RTP_ST_ESTABLISHED, |
| 24 | }; |
| 25 | |
| 26 | enum lchan_rtp_fsm_event { |
| 27 | LCHAN_RTP_EV_LCHAN_READY, |
| 28 | LCHAN_RTP_EV_READY_TO_SWITCH_RTP, |
| 29 | LCHAN_RTP_EV_MGW_ENDPOINT_AVAILABLE, |
| 30 | LCHAN_RTP_EV_MGW_ENDPOINT_ERROR, |
| 31 | LCHAN_RTP_EV_IPACC_CRCX_ACK, |
| 32 | LCHAN_RTP_EV_IPACC_CRCX_NACK, |
| 33 | LCHAN_RTP_EV_IPACC_MDCX_ACK, |
| 34 | LCHAN_RTP_EV_IPACC_MDCX_NACK, |
| 35 | LCHAN_RTP_EV_READY_TO_SWITCH, |
| 36 | LCHAN_RTP_EV_MGW_ENDPOINT_CONFIGURED, |
| 37 | LCHAN_RTP_EV_ROLLBACK, /*< Give the RTP back to the old lchan, if any */ |
| 38 | LCHAN_RTP_EV_ESTABLISHED, /*< All done, forget about the old lchan, if any */ |
| 39 | LCHAN_RTP_EV_RELEASE, |
| 40 | }; |
| 41 | |
| 42 | void lchan_rtp_fsm_start(struct gsm_lchan *lchan); |
| 43 | struct mgwep_ci *lchan_use_mgw_endpoint_ci_bts(struct gsm_lchan *lchan); |
| 44 | bool lchan_rtp_established(struct gsm_lchan *lchan); |
| 45 | void lchan_forget_mgw_endpoint(struct gsm_lchan *lchan); |