diff options
author | Max <msuraev@sysmocom.de> | 2018-11-07 12:48:04 +0100 |
---|---|---|
committer | Max <msuraev@sysmocom.de> | 2018-11-18 21:01:33 +0000 |
commit | 49c7d22c5e2cac38f887175ac70c3dd55bd11c65 (patch) | |
tree | 4505ed1766ec79899a0bff391fe7e9d106fcb415 /src | |
parent | 654bf62be2b66697f7b71ed82302afd09582aedf (diff) |
LCLS: move mode check into separate function
Before closing or breaking the loop in LCLS we do preliminary
checks. To facilitate adding new LCLS modes it's restructured as
follows:
* move check into dedicated static function
* explicitly check for MGW mode in endpoint check
* check for mode mismatch
Change-Id: I32ba232ad802625d97a0ad9d0511edc6ac7f251c
Related: OS#3659
Diffstat (limited to 'src')
-rw-r--r-- | src/osmo-bsc/osmo_bsc_lcls.c | 33 |
1 files changed, 25 insertions, 8 deletions
diff --git a/src/osmo-bsc/osmo_bsc_lcls.c b/src/osmo-bsc/osmo_bsc_lcls.c index a25faa487..81daaf070 100644 --- a/src/osmo-bsc/osmo_bsc_lcls.c +++ b/src/osmo-bsc/osmo_bsc_lcls.c @@ -227,6 +227,26 @@ void lcls_apply_config(struct gsm_subscriber_connection *conn) osmo_fsm_inst_dispatch(conn->lcls.fi, LCLS_EV_APPLY_CFG_CSC, NULL); } +static inline bool lcls_check_toggle_allowed(const struct gsm_subscriber_connection *conn, bool enable) +{ + if (conn->lcls.other && + conn->sccp.msc->lcls_mode != conn->lcls.other->sccp.msc->lcls_mode) { + LOGPFSM(conn->lcls.fi, "FIXME: LCLS connection mode mismatch: %s != %s\n", + get_value_string(bsc_lcls_mode_names, conn->sccp.msc->lcls_mode), + get_value_string(bsc_lcls_mode_names, conn->lcls.other->sccp.msc->lcls_mode)); + return false; + } + + if (conn->sccp.msc->lcls_mode == BSC_LCLS_MODE_MGW_LOOP && !conn->user_plane.mgw_endpoint_ci_msc) { + /* the MGCP FSM has died, e.g. due to some MGCP/SDP parsing error */ + LOGPFSML(conn->lcls.fi, LOGL_NOTICE, "Cannot %s LCLS without MSC-side MGCP FSM\n", + enable ? "enable" : "disable"); + return false; + } + + return true; +} + /* Close the loop for LCLS using MGCP */ static inline void lcls_mdcx(const struct gsm_subscriber_connection *conn, struct mgcp_conn_peer *mdcx_info) { @@ -242,11 +262,8 @@ static void lcls_break_local_switching(struct gsm_subscriber_connection *conn) LOGPFSM(conn->lcls.fi, "=== HERE IS WHERE WE DISABLE LCLS(%s)\n", bsc_lcls_mode_name(conn->sccp.msc->lcls_mode)); - if (!conn->user_plane.mgw_endpoint_ci_msc) { - /* the MGCP FSM has died, e.g. due to some MGCP/SDP parsing error */ - LOGPFSML(conn->lcls.fi, LOGL_NOTICE, "Cannot disable LCLS without MSC-side MGCP FSM\n"); + if (!lcls_check_toggle_allowed(conn, false)) return; - } if (conn->sccp.msc->lcls_mode == BSC_LCLS_MODE_MGW_LOOP) { struct mgcp_conn_peer mdcx_info = (struct mgcp_conn_peer){ @@ -583,12 +600,12 @@ static void lcls_locally_switched_onenter(struct osmo_fsm_inst *fi, uint32_t pre OSMO_ASSERT(conn_other); + if (!lcls_check_toggle_allowed(conn, true)) + return; + LOGPFSM(fi, "=== HERE IS WHERE WE ENABLE LCLS(%s)\n", bsc_lcls_mode_name(conn->sccp.msc->lcls_mode)); - if (!conn->user_plane.mgw_endpoint_ci_msc) { - LOGPFSML(fi, LOGL_ERROR, "Cannot enable LCLS without MSC-side MGCP FSM. FIXME\n"); - return; - } + if (!conn_other->user_plane.mgw_endpoint_ci_msc) { LOGPFSML(fi, LOGL_ERROR, "Cannot enable LCLS without MSC-side MGCP FSM. FIXME\n"); return; |