Holger Hans Peter Freyther wrote:

+       printf("%s TLLLI changed...... 0x%08x->0x%08x\n",
+               tbf_name(this), m_tlli, tlli);
+
+       if (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;
+       }
+

oops, i am sorry. i did not read all the follow-ups before answering your message...

the update of both DL and UL TBFs seems to be a good solution.

in the function above you wrote this comment:

* 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.

how can we have multiple TBFs for a single direction? i don't see anything like this in the specs.