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CU-CP/UP: release UE at PDCP in CU-CP

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We reuse RRC UE IDs at the RRC. Previous to this commit, we did not
release a UE at the CU-CP's PDCP (for SRBs). Thus, when reconnecting a
UE, the PDCP might not be in a good state, since we did not release the
previous PDCP UE context.
This commit is contained in:
Robert Schmidt
2023-12-20 15:19:38 +01:00
parent b2c5f4bcfa
commit 642fd9996b
1 changed files with 4 additions and 0 deletions
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openair2/RRC/NR/rrc_gNB.c
+4
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@@ -1904,6 +1904,10 @@ static void rrc_CU_process_ue_context_release_complete(MessageDef *msg_p)
} }
gNB_RRC_UE_t *UE = &ue_context_p->ue_context; gNB_RRC_UE_t *UE = &ue_context_p->ue_context;
/* we call nr_pdcp_remove_UE() in the handler of E1 bearer release, but if we
* are in E1, we also need to free the UE in the CU-CP, so call it twice to
* cover all cases */
nr_pdcp_remove_UE(UE->rrc_ue_id);
rrc_gNB_send_NGAP_UE_CONTEXT_RELEASE_COMPLETE(instance, UE->rrc_ue_id); rrc_gNB_send_NGAP_UE_CONTEXT_RELEASE_COMPLETE(instance, UE->rrc_ue_id);
LOG_I(NR_RRC, "removed UE CU UE ID %u/RNTI %04x \n", UE->rrc_ue_id, UE->rnti); LOG_I(NR_RRC, "removed UE CU UE ID %u/RNTI %04x \n", UE->rrc_ue_id, UE->rnti);
rrc_delete_ue_data(UE); rrc_delete_ue_data(UE);