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srsLTE
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add handler for EMM status message

This commit is contained in:
Andre Puschmann 2018-12-03 15:38:41 +01:00
parent e02ed62d02
commit c9857fe4ad
2 changed files with 30 additions and 0 deletions
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1
srsue/hdr/upper/nas.h
View File

@ -181,6 +181,7 @@ private:
void parse_esm_information_request(uint32_t lcid, byte_buffer_t *pdu);
void parse_emm_information(uint32_t lcid, byte_buffer_t *pdu);
void parse_detach_request(uint32_t lcid, byte_buffer_t *pdu);
void parse_emm_status(uint32_t lcid, byte_buffer_t *pdu);
// Packet generators
void gen_attach_request(byte_buffer_t *msg);

29
srsue/src/upper/nas.cc
View File

@ -381,6 +381,9 @@ void nas::write_pdu(uint32_t lcid, byte_buffer_t *pdu) {
case LIBLTE_MME_MSG_TYPE_DETACH_REQUEST:
parse_detach_request(lcid, pdu);
break;
case LIBLTE_MME_MSG_TYPE_EMM_STATUS:
parse_emm_status(lcid, pdu);
break;
default:
nas_log->error("Not handling NAS message with MSG_TYPE=%02X\n", msg_type);
pool->deallocate(pdu);
@ -1089,6 +1092,32 @@ void nas::parse_detach_request(uint32_t lcid, byte_buffer_t *pdu)
}
}
void nas::parse_emm_status(uint32_t lcid, byte_buffer_t *pdu)
{
LIBLTE_MME_EMM_STATUS_MSG_STRUCT emm_status;
liblte_mme_unpack_emm_status_msg((LIBLTE_BYTE_MSG_STRUCT *)pdu, &emm_status);
ctxt.rx_count++;
pool->deallocate(pdu);
switch (emm_status.emm_cause) {
case LIBLTE_MME_ESM_CAUSE_INVALID_EPS_BEARER_IDENTITY:
nas_log->info("Received EMM status: Invalid EPS bearer identity\n");
// TODO: abort any ongoing procedure (see Sec. 6.7 in TS 24.301)
break;
case LIBLTE_MME_ESM_CAUSE_INVALID_PTI_VALUE:
nas_log->info("Received EMM status: Invalid PTI value\n");
// TODO: abort any ongoing procedure (see Sec. 6.7 in TS 24.301)
break;
case LIBLTE_MME_ESM_CAUSE_MESSAGE_TYPE_NON_EXISTENT_OR_NOT_IMPLEMENTED:
nas_log->info("Received EMM status: Invalid PTI value\n");
// TODO: see Sec. 6.7 in TS 24.301
break;
default:
nas_log->info("Received unknown EMM status (cause=%d)\n", emm_status.emm_cause);
break;
}
}
/*******************************************************************************
* Senders
******************************************************************************/