diff options
| author | Holger Hans Peter Freyther <zecke@selfish.org> | 2011-12-27 22:24:17 +0100 |
|---|---|---|
| committer | Holger Hans Peter Freyther <zecke@selfish.org> | 2012-12-23 20:18:18 +0100 |
| commit | 8582535c829e6a40591448e4b794af8fb022624e (patch) | |
| tree | f4b9cf4116e054bb8cc03d72efda40328c0b17e3 /openbsc/src/libbsc/abis_rsl.c | |
| parent | 960c4044e61c8b4a522649c5d0e8f29b777356a6 (diff) | |
lchan: Release the lchan more quickly, align with GSM 04.08
* Release all channels with SAPI > 0 with the "local end release"
(as of NOTE 1 of GSM 04.08).
* No need to wait for all SAPIs to be torn down and the normal
REL_IND/REL_CONF will call rsl_handle_release and the channel
should be released.
* Update the documentation
Diffstat (limited to 'openbsc/src/libbsc/abis_rsl.c')
| -rw-r--r-- | openbsc/src/libbsc/abis_rsl.c | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/openbsc/src/libbsc/abis_rsl.c b/openbsc/src/libbsc/abis_rsl.c index 6f50cee16..6785be2e8 100644 --- a/openbsc/src/libbsc/abis_rsl.c +++ b/openbsc/src/libbsc/abis_rsl.c @@ -2,6 +2,7 @@ * 3GPP TS 08.58 version 8.6.0 Release 1999 / ETSI TS 100 596 V8.6.0 */ /* (C) 2008-2010 by Harald Welte <laforge@gnumonks.org> + * (C) 2012 by Holger Hans Peter Freyther * * All Rights Reserved * @@ -1581,7 +1582,6 @@ static int abis_rsl_rx_rll(struct msgb *msg) rll_indication(msg->lchan, rllh->link_id, BSC_RLLR_IND_REL_IND); rsl_handle_release(msg->lchan); - rsl_lchan_rll_release(msg->lchan, rllh->link_id); break; case RSL_MT_REL_CONF: /* BTS informs us of having received UA from MS, @@ -1589,7 +1589,6 @@ static int abis_rsl_rx_rll(struct msgb *msg) DEBUGPC(DRLL, "RELEASE CONFIRMATION\n"); msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_UNUSED; rsl_handle_release(msg->lchan); - rsl_lchan_rll_release(msg->lchan, rllh->link_id); break; case RSL_MT_ERROR_IND: rc = rsl_rx_rll_err_ind(msg); @@ -2058,3 +2057,30 @@ int rsl_bs_power_control(struct gsm_bts_trx *trx, uint8_t channel, uint8_t reduc return abis_rsl_sendmsg(msg); } + +/** + * Release all allocated SAPIs starting from @param start and + * release them with the given release mode. Once the release + * confirmation arrives it will be attempted to release the + * the RF channel. + */ +int rsl_release_sapis_from(struct gsm_lchan *lchan, int start, + enum rsl_rel_mode release_mode) +{ + int no_sapi = 1; + int sapi; + + for (sapi = start; sapi < ARRAY_SIZE(lchan->sapis); ++sapi) { + uint8_t link_id; + if (lchan->sapis[sapi] == LCHAN_SAPI_UNUSED) + continue; + + link_id = sapi; + if (lchan->type == GSM_LCHAN_TCH_F || lchan->type == GSM_LCHAN_TCH_H) + link_id |= 0x40; + rsl_release_request(lchan, link_id, release_mode); + no_sapi = 0; + } + + return no_sapi; +} |