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Starting to change NAS attach accept to support IPv4v6

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master
Pedro Alvarez 6 years ago committed by Andre Puschmann
parent 3528e0bb39
commit 1c0ddc717b
1 changed files with 15 additions and 3 deletions
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18
srsue/src/upper/nas.cc
Unescape Escape View File

@ -587,6 +587,7 @@ void nas::parse_attach_accept(uint32_t lcid, byte_buffer_t *pdu) {
if (pdu->N_bytes <= 5) {
nas_log->error("Invalid attach accept PDU size (%d)\n", pdu->N_bytes);
pool->deallocate(pdu);
return;
}
@ -629,7 +630,18 @@ void nas::parse_attach_accept(uint32_t lcid, byte_buffer_t *pdu) {
liblte_mme_unpack_activate_default_eps_bearer_context_request_msg(&attach_accept.esm_msg,
&act_def_eps_bearer_context_req);
if (LIBLTE_MME_PDN_TYPE_IPV4 == act_def_eps_bearer_context_req.pdn_addr.pdn_type) {
if ( (cfg.apn_protocol == "ipv4" && LIBLTE_MME_PDN_TYPE_IPV6 == act_def_eps_bearer_context_req.pdn_addr.pdn_type) ||
(cfg.apn_protocol == "ipv6" && LIBLTE_MME_PDN_TYPE_IPV4 == act_def_eps_bearer_context_req.pdn_addr.pdn_type) ){
nas_log->error("Failed to attach -- Mismatch between PDN protocol and PDN type in attach accept.\n");
pool->deallocate(pdu);
return;
}
if ( ("ipv4v6" == cfg.apn_protocol && LIBLTE_MME_PDN_TYPE_IPV4 == act_def_eps_bearer_context_req.pdn_addr.pdn_type) ||
("ipv4v6" == cfg.apn_protocol && LIBLTE_MME_PDN_TYPE_IPV6 == act_def_eps_bearer_context_req.pdn_addr.pdn_type) ){
nas_log->warning("Requested IPv4v6, but only received a single PDN address.\n");
nas_log->warning("EMM Cause: %d\n", attach_accept.emm_cause );
}
if (LIBLTE_MME_PDN_TYPE_IPV4 == act_def_eps_bearer_context_req.pdn_addr.pdn_type || LIBLTE_MME_PDN_TYPE_IPV4V6 == act_def_eps_bearer_context_req.pdn_addr.pdn_type) {
ip_addr |= act_def_eps_bearer_context_req.pdn_addr.addr[0] << 24;
ip_addr |= act_def_eps_bearer_context_req.pdn_addr.addr[1] << 16;
ip_addr |= act_def_eps_bearer_context_req.pdn_addr.addr[2] << 8;
@ -653,7 +665,7 @@ void nas::parse_attach_accept(uint32_t lcid, byte_buffer_t *pdu) {
if (gw->setup_if_addr(ip_addr, err_str)) {
nas_log->error("Failed to set gateway address - %s\n", err_str);
}
} else if (LIBLTE_MME_PDN_TYPE_IPV6 == act_def_eps_bearer_context_req.pdn_addr.pdn_type){
} else if (LIBLTE_MME_PDN_TYPE_IPV6 == act_def_eps_bearer_context_req.pdn_addr.pdn_type || LIBLTE_MME_PDN_TYPE_IPV4V6 == act_def_eps_bearer_context_req.pdn_addr.pdn_type){
memcpy(ipv6_if_id, act_def_eps_bearer_context_req.pdn_addr.addr, 8);
nas_log->info("Network attach successful. APN: %s, IPv6 interface id: %02x%02x:%02x%02x:%02x%02x:%02x%02x\n",
act_def_eps_bearer_context_req.apn.apn,
@ -681,7 +693,7 @@ void nas::parse_attach_accept(uint32_t lcid, byte_buffer_t *pdu) {
nas_log->error("Failed to set gateway address - %s\n", err_str);
}
} else {
nas_log->error("Not handling IPV6 or IPV4V6\n");
nas_log->error("PDN type not IPv4, IPv6 nor IPv4v6\n");
pool->deallocate(pdu);
return;
}

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