diff options
| author | Pau Espin Pedrol <pespin@sysmocom.de> | 2021-11-10 16:11:17 +0100 |
|---|---|---|
| committer | Pau Espin Pedrol <pespin@sysmocom.de> | 2021-11-10 16:11:19 +0100 |
| commit | ace3b1bdc1d5fcd9edd3c8556249467afb971029 (patch) | |
| tree | bcf96da24c0c9a4b6c643837c2932e383054231c | |
| parent | 54a126f6d4c8d113077d7ac0ad47449a04878902 (diff) | |
pdch: Drop previous UL TBF from MS who sent PktResReq through SBA
If the MS has a pending UL TBF but we just received a PktResReq on an
allocated SBA from it (same TLLI, hence same MS), then it means it
allocated the SBA through RACH req and hence it was on CCCH. That means
it was not active on any PDCH, hence for sure the previous UL TBF can be
dropped.
Related: OS#5293
Change-Id: I1f20dba56f46ea15cbb9b03bdc5b79d923491a3c
| -rw-r--r-- | src/pdch.cpp | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/pdch.cpp b/src/pdch.cpp index 4d82ab16..c48b078e 100644 --- a/src/pdch.cpp +++ b/src/pdch.cpp @@ -680,6 +680,16 @@ void gprs_rlcmac_pdch::rcv_resource_request(Packet_Resource_Request_t *request, "MS requests UL TBF throguh SBA\n", fn); ms_set_ta(ms, sba->ta); sba_free(sba); + /* If MS identified by TLLI sent us a PktResReq through SBA, it means it came + * from CCCH, so it's for sure not using previous UL + * TBF; drop it if it still exits on our end: */ + if ((ul_tbf = ms_ul_tbf(ms))) { + /* Get rid of previous finished UL TBF before providing a new one */ + LOGPTBFUL(ul_tbf, LOGL_NOTICE, + "Got PACKET RESOURCE REQ while TBF not finished, killing pending UL TBF\n"); + tbf_free(ul_tbf); + ul_tbf = NULL; + } /* MS seized the PDCH answering on the SBA: */ bts_do_rate_ctr_inc(bts, CTR_IMMEDIATE_ASSIGN_UL_TBF_CONTENTION_RESOLUTION_SUCCESS); break; |