diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/tbf.cpp | 29 |
1 files changed, 26 insertions, 3 deletions
diff --git a/src/tbf.cpp b/src/tbf.cpp index fac5aaf8..d78090fb 100644 --- a/src/tbf.cpp +++ b/src/tbf.cpp @@ -1618,9 +1618,32 @@ void gprs_rlcmac_tbf::update_tlli(uint32_t tlli) if (tlli == m_tlli) return; -#warning "TODO.. find the DL/UL opposite and update the TLLI too" - LOGP(DRLCMAC, LOGL_NOTICE, "%s changing tlli to TLLI=0x%08x\n", - tbf_name(this), tlli); + bool changedUl = false; + + /* + * During a Routing Area Update (due the assignment of a new + * P-TMSI) the tlli can change. We notice this when receiving + * a PACKET CONTROL ACK. + * When we get a TLLI change on the DL we will look if there + * is a UL TBF and change the tlli there as well. + * + * TODO: There could be multiple DL and UL TBFs and we should + * have a proper way to link all the related TBFs so we can do + * a group update. + */ + if (m_tlli_valid && direction == GPRS_RLCMAC_DL_TBF) { + gprs_rlcmac_tbf *ul_tbf; + ul_tbf = bts->tbf_by_tlli(m_tlli, GPRS_RLCMAC_UL_TBF); + + if (ul_tbf) { + ul_tbf->m_tlli = tlli; + changedUl = true; + } + } + + LOGP(DRLCMAC, LOGL_NOTICE, + "%s changing tlli from TLLI=0x%08x TLLI=0x%08x ul_changed=%d\n", + tbf_name(this), m_tlli, tlli, changedUl); m_tlli = tlli; } |