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move ESM SM from mme_sess_t to mme_bearer_t

This commit is contained in:
Sukchan Lee 2017-09-04 22:00:51 +09:00
parent 1c8a59d3b4
commit a9b181cbd5
14 changed files with 262 additions and 125 deletions
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57
src/mme/emm_handler.c
View File

@ -31,28 +31,12 @@ void event_emm_to_esm(
c_uint8_t pti = NAS_PROCEDURE_TRANSACTION_IDENTITY_UNASSIGNED;
c_uint8_t ebi = NAS_EPS_BEARER_IDENTITY_UNASSIGNED;
mme_sess_t *sess = NULL;
mme_bearer_t *bearer = NULL;
d_assert(mme_ue, return, "Null param");
d_assert(esm_message_container, return, "Null param");
d_assert(esm_message_container->len, return, "Null param");
h = (nas_esm_header_t *)esm_message_container->data;
d_assert(h, return, "Null param");
pti = h->procedure_transaction_identity;
ebi = h->eps_bearer_identity;
if (ebi != NAS_EPS_BEARER_IDENTITY_UNASSIGNED)
sess = mme_sess_find_by_ebi(mme_ue, ebi);
else if (pti != NAS_PROCEDURE_TRANSACTION_IDENTITY_UNASSIGNED)
sess = mme_sess_find_by_pti(mme_ue, pti);
else
d_assert(0, return, "Invalid pti(%d) and ebi(%d)\n", pti, ebi);
if (!sess)
sess = mme_sess_add(mme_ue, pti);
d_assert(sess, return, "Null param");
/* The Packet Buffer(pkbuf_t) for NAS message MUST make a HEADROOM.
* When calculating AES_CMAC, we need to use the headroom of the packet. */
esmbuf = pkbuf_alloc(NAS_HEADROOM, esm_message_container->len);
@ -60,8 +44,29 @@ void event_emm_to_esm(
memcpy(esmbuf->payload,
esm_message_container->data, esm_message_container->len);
h = (nas_esm_header_t *)esm_message_container->data;
d_assert(h, return, "Null param");
pti = h->procedure_transaction_identity;
ebi = h->eps_bearer_identity;
if (ebi != NAS_EPS_BEARER_IDENTITY_UNASSIGNED)
bearer = mme_bearer_find_by_ue_ebi(mme_ue, ebi);
else if (pti != NAS_PROCEDURE_TRANSACTION_IDENTITY_UNASSIGNED)
bearer = mme_bearer_find_by_ue_pti(mme_ue, pti);
else
d_assert(0, return, "Invalid pti(%d) and ebi(%d)\n", pti, ebi);
if (!bearer)
{
sess = mme_sess_add(mme_ue, pti);
d_assert(sess, return, "Null param");
bearer = mme_default_bearer_in_sess(sess);
}
d_assert(bearer, return, "Null param");
event_set(&e, MME_EVT_ESM_MESSAGE);
event_set_param1(&e, (c_uintptr_t)sess->index);
event_set_param1(&e, (c_uintptr_t)bearer->index);
event_set_param2(&e, (c_uintptr_t)esmbuf);
mme_event_send(&e);
}
@ -177,7 +182,7 @@ void emm_handle_attach_accept(mme_ue_t *mme_ue)
d_assert(rv == CORE_OK && esmbuf, return, "esm build error");
d_trace(3, "[NAS] Activate default bearer context request : "
"EMM <-- ESM[%d]\n", sess->pti);
"EMM <-- ESM\n");
rv = emm_build_attach_accept(&emmbuf, mme_ue, esmbuf);
d_assert(rv == CORE_OK && emmbuf,
@ -260,6 +265,7 @@ void emm_handle_attach_reject(mme_ue_t *mme_ue,
mme_enb_t *enb = NULL;
enb_ue_t *enb_ue = NULL;
mme_sess_t *sess = NULL;
mme_bearer_t *bearer = NULL;
pkbuf_t *s1apbuf = NULL, *esmbuf = NULL, *emmbuf = NULL;
S1ap_Cause_t cause;
@ -272,10 +278,15 @@ void emm_handle_attach_reject(mme_ue_t *mme_ue,
sess = mme_sess_first(mme_ue);
if (sess)
{
rv = esm_build_pdn_connectivity_reject(&esmbuf, sess->pti, esm_cause);
d_assert(rv == CORE_OK && esmbuf, return, "esm build error");
d_trace(3, "[NAS] PDN Connectivity reject : "
"EMM <-- ESM[%d]\n", sess->pti);
bearer = mme_default_bearer_in_sess(sess);
if (bearer)
{
rv = esm_build_pdn_connectivity_reject(
&esmbuf, bearer->pti, esm_cause);
d_assert(rv == CORE_OK && esmbuf, return, "esm build error");
d_trace(3, "[NAS] PDN Connectivity reject : EMM <-- ESM\n",
bearer->pti);
}
}
rv = emm_build_attach_reject(&emmbuf, emm_cause, esmbuf);

10
src/mme/esm_build.c
View File

@ -28,13 +28,13 @@ status_t esm_build_pdn_connectivity_reject(
return CORE_OK;
}
status_t esm_build_information_request(pkbuf_t **pkbuf, mme_sess_t *sess)
status_t esm_build_information_request(pkbuf_t **pkbuf, mme_bearer_t *bearer)
{
nas_message_t message;
mme_ue_t *mme_ue = NULL;
d_assert(sess, return CORE_ERROR, "Null param");
mme_ue = sess->mme_ue;
d_assert(bearer, return CORE_ERROR, "Null param");
mme_ue = bearer->mme_ue;
d_assert(mme_ue, return CORE_ERROR, "Null param");
memset(&message, 0, sizeof(message));
@ -43,7 +43,7 @@ status_t esm_build_information_request(pkbuf_t **pkbuf, mme_sess_t *sess)
message.h.protocol_discriminator = NAS_PROTOCOL_DISCRIMINATOR_EMM;
message.esm.h.protocol_discriminator = NAS_PROTOCOL_DISCRIMINATOR_ESM;
message.esm.h.procedure_transaction_identity = sess->pti;
message.esm.h.procedure_transaction_identity = bearer->pti;
message.esm.h.message_type = NAS_ESM_INFORMATION_REQUEST;
d_assert(nas_security_encode(pkbuf, mme_ue, &message) == CORE_OK &&
@ -86,7 +86,7 @@ status_t esm_build_activate_default_bearer_context(
memset(&message, 0, sizeof(message));
message.esm.h.eps_bearer_identity = bearer->ebi;
message.esm.h.protocol_discriminator = NAS_PROTOCOL_DISCRIMINATOR_ESM;
message.esm.h.procedure_transaction_identity = sess->pti;
message.esm.h.procedure_transaction_identity = bearer->pti;
message.esm.h.message_type =
NAS_ACTIVATE_DEFAULT_EPS_BEARER_CONTEXT_REQUEST;

2
src/mme/esm_build.h
View File

@ -11,7 +11,7 @@ CORE_DECLARE(status_t) esm_build_pdn_connectivity_reject(pkbuf_t **pkbuf,
c_uint8_t pti, nas_esm_cause_t esm_cause);
CORE_DECLARE(status_t) esm_build_information_request(pkbuf_t **pkbuf,
mme_sess_t *sess);
mme_bearer_t *bearer);
CORE_DECLARE(status_t) esm_build_activate_default_bearer_context(
pkbuf_t **pkbuf, mme_sess_t *sess);

16
src/mme/esm_handler.c
View File

@ -29,22 +29,6 @@ void esm_handle_pdn_connectivity_request(mme_sess_t *sess,
}
}
void esm_handle_information_request(mme_sess_t *sess)
{
status_t rv;
pkbuf_t *esmbuf = NULL;
mme_ue_t *mme_ue = NULL;
d_assert(sess, return, "Null param");
mme_ue = sess->mme_ue;
d_assert(mme_ue, return, "Null param");
rv = esm_build_information_request(&esmbuf, sess);
d_assert(rv == CORE_OK && esmbuf, return, "esm_build failed");
d_assert(nas_send_to_downlink_nas_transport(mme_ue, esmbuf) == CORE_OK,,);
}
void esm_handle_information_response(mme_sess_t *sess,
nas_esm_information_response_t *esm_information_response)
{

1
src/mme/esm_handler.h
View File

@ -11,7 +11,6 @@ extern "C" {
CORE_DECLARE(void) esm_handle_pdn_connectivity_request(mme_sess_t *sess,
nas_pdn_connectivity_request_t *pdn_connectivity_request);
CORE_DECLARE(void) esm_handle_information_request(mme_sess_t *sess);
CORE_DECLARE(void) esm_handle_information_response(mme_sess_t *sess,
nas_esm_information_response_t *bearer_information_response);

23
src/mme/esm_sm.c
View File

@ -10,6 +10,7 @@
#include "esm_build.h"
#include "esm_handler.h"
#include "mme_s11_handler.h"
#include "nas_path.h"
void esm_state_initial(fsm_t *s, event_t *e)
{
@ -29,15 +30,18 @@ void esm_state_final(fsm_t *s, event_t *e)
void esm_state_operational(fsm_t *s, event_t *e)
{
mme_sess_t *sess = NULL;
mme_ue_t *mme_ue = NULL;
mme_sess_t *sess = NULL;
mme_bearer_t *bearer = NULL;
d_assert(s, return, "Null param");
d_assert(e, return, "Null param");
mme_sm_trace(3, e);
sess = mme_sess_find(event_get_param1(e));
bearer = mme_bearer_find(event_get_param1(e));
d_assert(bearer, return, "Null param");
sess = bearer->sess;
d_assert(sess, return, "Null param");
mme_ue = sess->mme_ue;
d_assert(mme_ue, return, "Null param");
@ -65,7 +69,7 @@ void esm_state_operational(fsm_t *s, event_t *e)
sess, &message->esm.pdn_connectivity_request);
d_trace(3, "[NAS] PDN connectivity request : "
"UE[%s] --> ESM[%d]\n",
mme_ue->imsi_bcd, sess->pti);
mme_ue->imsi_bcd, bearer->pti);
d_assert(MME_UE_HAVE_IMSI(mme_ue), break,
"No IMSI in PDN_CPNNECTIVITY_REQUEST");
@ -85,7 +89,14 @@ void esm_state_operational(fsm_t *s, event_t *e)
}
else
{
esm_handle_information_request(sess);
status_t rv;
pkbuf_t *esmbuf = NULL;
rv = esm_build_information_request(&esmbuf, bearer);
d_assert(rv == CORE_OK && esmbuf, break,
"esm_build failed");
d_assert(nas_send_to_downlink_nas_transport(
mme_ue, esmbuf) == CORE_OK,,);
}
break;
}
@ -93,7 +104,7 @@ void esm_state_operational(fsm_t *s, event_t *e)
{
d_trace(3, "[NAS] ESM information response : "
"UE[%s] --> ESM[%d]\n",
mme_ue->imsi_bcd, sess->pti);
mme_ue->imsi_bcd, bearer->pti);
esm_handle_information_response(
sess, &message->esm.esm_information_response);
@ -104,7 +115,7 @@ void esm_state_operational(fsm_t *s, event_t *e)
{
d_trace(3, "[NAS] Activate default eps bearer "
"context accept : UE[%s] --> ESM[%d]\n",
mme_ue->imsi_bcd, sess->pti);
mme_ue->imsi_bcd, bearer->pti);
break;
}
default:

82
src/mme/mme_context.c
View File

@ -1472,7 +1472,6 @@ mme_sess_t *mme_sess_add(mme_ue_t *mme_ue, c_uint8_t pti)
{
mme_sess_t *sess = NULL;
mme_bearer_t *bearer = NULL;
event_t e;
d_assert(mme_ue, return NULL, "Null param");
d_assert(pti != NAS_PROCEDURE_TRANSACTION_IDENTITY_UNASSIGNED,
@ -1481,37 +1480,25 @@ mme_sess_t *mme_sess_add(mme_ue_t *mme_ue, c_uint8_t pti)
index_alloc(&mme_sess_pool, &sess);
d_assert(sess, return NULL, "Null param");
sess->pti = pti;
list_init(&sess->bearer_list);
list_append(&mme_ue->sess_list, sess);
sess->mme_ue = mme_ue;
sess->sgw = mme_sgw_first();
bearer = mme_bearer_add(sess,
NEXT_ID(mme_ue->ebi, MIN_EPS_BEARER_ID, MAX_EPS_BEARER_ID));
bearer = mme_bearer_add(sess);
d_assert(bearer, mme_sess_remove(sess); return NULL,
"Can't add default bearer context");
event_set_param1(&e, (c_uintptr_t)sess->index);
fsm_create(&sess->sm, esm_state_initial, esm_state_final);
fsm_init(&sess->sm, &e);
bearer->pti = pti;
return sess;
}
status_t mme_sess_remove(mme_sess_t *sess)
{
event_t e;
d_assert(sess, return CORE_ERROR, "Null param");
d_assert(sess->mme_ue, return CORE_ERROR, "Null param");
event_set_param1(&e, (c_uintptr_t)sess->index);
fsm_final(&sess->sm, &e);
fsm_clear(&sess->sm);
mme_bearer_remove_all(sess);
list_remove(&sess->mme_ue->sess_list, sess);
@ -1545,16 +1532,11 @@ mme_sess_t* mme_sess_find(index_t index)
mme_sess_t* mme_sess_find_by_pti(mme_ue_t *mme_ue, c_uint8_t pti)
{
mme_sess_t *sess = NULL;
sess = mme_sess_first(mme_ue);
while (sess)
{
if (pti == sess->pti)
return sess;
mme_bearer_t *bearer = NULL;
sess = mme_sess_next(sess);
}
bearer = mme_bearer_find_by_ue_pti(mme_ue, pti);
if (bearer)
return bearer->sess;
return NULL;
}
@ -1580,8 +1562,10 @@ mme_sess_t* mme_sess_next(mme_sess_t *sess)
return list_next(sess);
}
mme_bearer_t* mme_bearer_add(mme_sess_t *sess, c_uint8_t ebi)
mme_bearer_t* mme_bearer_add(mme_sess_t *sess)
{
event_t e;
mme_bearer_t *bearer = NULL;
mme_ue_t *mme_ue = NULL;
@ -1592,20 +1576,30 @@ mme_bearer_t* mme_bearer_add(mme_sess_t *sess, c_uint8_t ebi)
index_alloc(&mme_bearer_pool, &bearer);
d_assert(bearer, return NULL, "Null param");
bearer->ebi = ebi;
bearer->ebi = NEXT_ID(mme_ue->ebi, MIN_EPS_BEARER_ID, MAX_EPS_BEARER_ID);
list_append(&sess->bearer_list, bearer);
bearer->mme_ue = mme_ue;
bearer->sess = sess;
event_set_param1(&e, (c_uintptr_t)bearer->index);
fsm_create(&bearer->sm, esm_state_initial, esm_state_final);
fsm_init(&bearer->sm, &e);
return bearer;
}
status_t mme_bearer_remove(mme_bearer_t *bearer)
{
event_t e;
d_assert(bearer, return CORE_ERROR, "Null param");
d_assert(bearer->sess, return CORE_ERROR, "Null param");
event_set_param1(&e, (c_uintptr_t)bearer->index);
fsm_final(&bearer->sm, &e);
fsm_clear(&bearer->sm);
list_remove(&bearer->sess->bearer_list, bearer);
index_free(&mme_bearer_pool, bearer);
@ -1638,6 +1632,42 @@ mme_bearer_t* mme_bearer_find(index_t index)
return index_find(&mme_bearer_pool, index);
}
mme_bearer_t* mme_bearer_find_by_sess_pti(mme_sess_t *sess, c_uint8_t pti)
{
mme_bearer_t *bearer = NULL;
bearer = mme_bearer_first(sess);
while(bearer)
{
if (pti == bearer->pti)
return bearer;
bearer = mme_bearer_next(bearer);
}
return NULL;
}
mme_bearer_t* mme_bearer_find_by_ue_pti(mme_ue_t *mme_ue, c_uint8_t pti)
{
mme_sess_t *sess = NULL;
mme_bearer_t *bearer = NULL;
sess = mme_sess_first(mme_ue);
while (sess)
{
bearer = mme_bearer_find_by_sess_pti(sess, pti);
if (bearer)
{
return bearer;
}
sess = mme_sess_next(sess);
}
return NULL;
}
mme_bearer_t* mme_bearer_find_by_sess_ebi(mme_sess_t *sess, c_uint8_t ebi)
{
mme_bearer_t *bearer = NULL;

32
src/mme/mme_context.h
View File

@ -242,12 +242,17 @@ struct _mme_ue_t {
nas_detach_type_t detach_type;
};
#define MME_SESSION_IS_VALID(__sESS) \
((__sESS) && (mme_bearer_first(__sESS)) && \
((mme_default_bearer_in_sess(__sESS)->sgw_s1u_teid) && \
(mme_default_bearer_in_sess(__sESS)->sgw_s1u_addr)))
#define MME_UE_HAVE_SESSION(__mME) \
((__mME) && (mme_sess_first(__mME)) && \
MME_SESSION_IS_VALID(mme_sess_first(__mME)))
typedef struct _mme_sess_t {
lnode_t node; /* A node of list_t */
index_t index; /* An index of this node */
fsm_t sm; /* State Machine */
c_uint8_t pti; /* Procedure Trasaction Identity */
/* mme_bearer_first(sess) : Default Bearer Context */
list_t bearer_list;
@ -278,28 +283,27 @@ typedef struct _mme_sess_t {
int pgw_pco_len;
} mme_sess_t;
#define MME_BEARER_IS_VALID(__bEARER) \
((__bEARER) && ((__bEARER)->enb_s1u_teid) && ((__bEARER)->enb_s1u_addr))
typedef struct _mme_bearer_t {
lnode_t node; /* A node of list_t */
index_t index; /* An index of this node */
fsm_t sm; /* State Machine */
c_uint8_t ebi; /* EPS Bearer ID */
c_uint8_t pti; /* Procedure Trasaction Identity */
#define MME_SESSION_IS_VALID(__sESS) \
((__sESS) && (mme_bearer_first(__sESS)) && \
((mme_default_bearer_in_sess(__sESS)->sgw_s1u_teid) && \
(mme_default_bearer_in_sess(__sESS)->sgw_s1u_addr)))
#define MME_UE_HAVE_SESSION(__mME) \
((__mME) && (mme_sess_first(__mME)) && \
MME_SESSION_IS_VALID(mme_sess_first(__mME)))
c_uint32_t enb_s1u_teid;
c_uint32_t enb_s1u_addr;
c_uint32_t sgw_s1u_teid;
c_uint32_t sgw_s1u_addr;
qos_t qos;
/* Related Context */
mme_ue_t *mme_ue;
mme_sess_t *sess;
gtp_xact_t *xact;
} mme_bearer_t;
CORE_DECLARE(status_t) mme_context_init(void);
@ -356,10 +360,14 @@ CORE_DECLARE(mme_sess_t*) mme_sess_find_by_ebi(
CORE_DECLARE(mme_sess_t*) mme_sess_first(mme_ue_t *mme_ue);
CORE_DECLARE(mme_sess_t*) mme_sess_next(mme_sess_t *sess);
CORE_DECLARE(mme_bearer_t*) mme_bearer_add(mme_sess_t *sess, c_uint8_t ebi);
CORE_DECLARE(mme_bearer_t*) mme_bearer_add(mme_sess_t *sess);
CORE_DECLARE(status_t) mme_bearer_remove(mme_bearer_t *bearer);
CORE_DECLARE(status_t) mme_bearer_remove_all(mme_sess_t *sess);
CORE_DECLARE(mme_bearer_t*) mme_bearer_find(index_t index);
CORE_DECLARE(mme_bearer_t*) mme_bearer_find_by_sess_pti(
mme_sess_t *sess, c_uint8_t pti);
CORE_DECLARE(mme_bearer_t*) mme_bearer_find_by_ue_pti(
mme_ue_t *mme_ue, c_uint8_t pti);
CORE_DECLARE(mme_bearer_t*) mme_bearer_find_by_sess_ebi(
mme_sess_t *sess, c_uint8_t ebi);
CORE_DECLARE(mme_bearer_t*) mme_bearer_find_by_ue_ebi(

88
src/mme/mme_s11_handler.c
View File

@ -91,7 +91,7 @@ void mme_s11_handle_create_session_response(
pdn = sess->pdn;
d_assert(pdn, return, "Null param");
/* Receive Control Plane(UL) : SGW-S11 */
/* Control Plane(UL) : SGW-S11 */
sgw_s11_teid = rsp->sender_f_teid_for_control_plane.data;
mme_ue->sgw_s11_teid = ntohl(sgw_s11_teid->teid);
mme_ue->sgw_s11_addr = sgw_s11_teid->ipv4_addr;
@ -99,6 +99,7 @@ void mme_s11_handle_create_session_response(
memcpy(&pdn->paa, rsp->pdn_address_allocation.data,
rsp->pdn_address_allocation.len);
/* PCO */
if (rsp->protocol_configuration_options.presence)
{
sess->pgw_pco_len = rsp->protocol_configuration_options.len;
@ -106,7 +107,7 @@ void mme_s11_handle_create_session_response(
sess->pgw_pco_len);
}
/* Receive Data Plane(UL) : SGW-S1U */
/* Data Plane(UL) : SGW-S1U */
sgw_s1u_teid = rsp->bearer_contexts_created.s1_u_enodeb_f_teid.data;
bearer->sgw_s1u_teid = ntohl(sgw_s1u_teid->teid);
bearer->sgw_s1u_addr = sgw_s1u_teid->ipv4_addr;
@ -118,6 +119,22 @@ void mme_s11_handle_create_session_response(
d_assert(rv == CORE_OK, return, "xact_commit error");
}
void mme_s11_handle_modify_bearer_response(
gtp_xact_t *xact, mme_ue_t *mme_ue, gtp_modify_bearer_response_t *rsp)
{
status_t rv;
d_assert(xact, return, "Null param");
d_assert(mme_ue, return, "Null param");
d_assert(rsp, return, "Null param");
d_trace(3, "[GTP] Modify Bearer Response : "
"MME[%d] <-- SGW[%d]\n", mme_ue->mme_s11_teid, mme_ue->sgw_s11_teid);
rv = gtp_xact_commit(xact);
d_assert(rv == CORE_OK, return, "xact_commit error");
}
void mme_s11_handle_delete_all_sessions_in_ue(mme_ue_t *mme_ue)
{
status_t rv;
@ -186,20 +203,73 @@ void mme_s11_handle_delete_session_response(
d_assert(rv == CORE_OK, return, "xact_commit error");
}
void mme_s11_handle_modify_bearer_response(
gtp_xact_t *xact, mme_ue_t *mme_ue, gtp_modify_bearer_response_t *rsp)
void mme_s11_handle_create_bearer_request(
gtp_xact_t *xact, mme_ue_t *mme_ue, gtp_create_bearer_request_t *req)
{
status_t rv;
mme_bearer_t *bearer = NULL;
mme_sess_t *sess = NULL;
gtp_f_teid_t *sgw_s1u_teid = NULL;
gtp_bearer_qos_t bearer_qos;
d_assert(xact, return, "Null param");
d_assert(mme_ue, return, "Null param");
d_assert(rsp, return, "Null param");
d_assert(req, return, "Null param");
d_trace(3, "[GTP] Modify Bearer Response : "
d_trace(3, "[GTP] Create Bearer Request : "
"MME[%d] <-- SGW[%d]\n", mme_ue->mme_s11_teid, mme_ue->sgw_s11_teid);
rv = gtp_xact_commit(xact);
d_assert(rv == CORE_OK, return, "xact_commit error");
if (req->linked_eps_bearer_id.presence == 0)
{
d_error("No Linked EBI");
return;
}
if (req->bearer_contexts.presence == 0)
{
d_error("No Bearer");
return;
}
if (req->bearer_contexts.eps_bearer_id.presence == 0)
{
d_error("No EPS Bearer ID");
return;
}
if (req->bearer_contexts.s1_u_enodeb_f_teid.presence == 0)
{
d_error("No GTP TEID");
return;
}
if (req->bearer_contexts.bearer_level_qos.presence == 0)
{
d_error("No QoS");
return;
}
sess = mme_sess_find_by_ebi(mme_ue, req->linked_eps_bearer_id.u8);
d_assert(sess, return,
"No Session Context(EBI:%d)", req->linked_eps_bearer_id);
bearer = mme_bearer_add(sess);
d_assert(bearer, return, "No Bearer Context");
/* Data Plane(UL) : SGW-S1U */
sgw_s1u_teid = req->bearer_contexts.s1_u_enodeb_f_teid.data;
bearer->sgw_s1u_teid = ntohl(sgw_s1u_teid->teid);
bearer->sgw_s1u_addr = sgw_s1u_teid->ipv4_addr;
/* Bearer QoS */
d_assert(gtp_parse_bearer_qos(&bearer_qos,
&req->bearer_contexts.bearer_level_qos) ==
req->bearer_contexts.bearer_level_qos.len, return,);
bearer->qos.qci = bearer_qos.qci;
bearer->qos.arp.priority_level = bearer_qos.priority_level;
bearer->qos.arp.pre_emption_capability =
bearer_qos.pre_emption_capability;
bearer->qos.arp.pre_emption_vulnerability =
bearer_qos.pre_emption_vulnerability;
/* Save Transaction */
bearer->xact = xact;
}
void mme_s11_handle_release_access_bearers_response(

6
src/mme/mme_s11_handler.h
View File

@ -12,12 +12,14 @@ extern "C" {
CORE_DECLARE(void) mme_s11_handle_create_session_request(mme_sess_t *sess);
CORE_DECLARE(void) mme_s11_handle_create_session_response(
gtp_xact_t *xact, mme_ue_t *mme_ue, gtp_create_session_response_t *rsp);
CORE_DECLARE(void) mme_s11_handle_modify_bearer_response(
gtp_xact_t *xact, mme_ue_t *mme_ue, gtp_modify_bearer_response_t *rsp);
CORE_DECLARE(void) mme_s11_handle_delete_all_sessions_in_ue(mme_ue_t *mme_ue);
CORE_DECLARE(void) mme_s11_handle_delete_session_response(
gtp_xact_t *xact, mme_ue_t *mme_ue, gtp_delete_session_response_t *rsp);
CORE_DECLARE(void) mme_s11_handle_create_bearer_request(
gtp_xact_t *xact, mme_ue_t *mme_ue, gtp_create_bearer_request_t *rsp);
CORE_DECLARE(void) mme_s11_handle_modify_bearer_response(
gtp_xact_t *xact, mme_ue_t *mme_ue, gtp_modify_bearer_response_t *rsp);
CORE_DECLARE(void) mme_s11_handle_release_access_bearers_response(
gtp_xact_t *xact, mme_ue_t *mme_ue,
gtp_release_access_bearers_response_t *rsp);

15
src/mme/mme_sm.c
View File

@ -223,14 +223,11 @@ void mme_state_operational(fsm_t *s, event_t *e)
case MME_EVT_ESM_MESSAGE:
{
nas_message_t message;
mme_sess_t *sess = NULL;
mme_ue_t *mme_ue = NULL;
mme_bearer_t *bearer = NULL;
pkbuf_t *pkbuf = NULL;
sess = mme_sess_find(event_get_param1(e));
d_assert(sess, break, "No Session context");
d_assert(mme_ue = sess->mme_ue, break, "No UE context");
d_assert(FSM_STATE(&sess->sm), break, "No ESM State Machine");
bearer = mme_bearer_find(event_get_param1(e));
d_assert(bearer, break, "No Bearer context");
pkbuf = (pkbuf_t *)event_get_param2(e);
d_assert(pkbuf, break, "Null param");
@ -239,7 +236,7 @@ void mme_state_operational(fsm_t *s, event_t *e)
event_set_param3(e, (c_uintptr_t)&message);
fsm_dispatch(&sess->sm, (fsm_event_t*)e);
fsm_dispatch(&bearer->sm, (fsm_event_t*)e);
pkbuf_free(pkbuf);
@ -388,6 +385,10 @@ void mme_state_operational(fsm_t *s, event_t *e)
break;
}
case GTP_CREATE_BEARER_REQUEST_TYPE:
mme_s11_handle_create_bearer_request(
xact, mme_ue, &message.create_bearer_request);
break;
case GTP_RELEASE_ACCESS_BEARERS_RESPONSE_TYPE:
{
mme_s11_handle_release_access_bearers_response(

36
src/mme/s1ap_handler.c
View File

@ -92,8 +92,11 @@ static void event_s1ap_to_nas(enb_ue_t *enb_ue, S1ap_NAS_PDU_t *nasPdu)
}
else if (h->protocol_discriminator == NAS_PROTOCOL_DISCRIMINATOR_ESM)
{
mme_sess_t *sess = NULL;
mme_ue_t *mme_ue = enb_ue->mme_ue;
mme_sess_t *sess = NULL;
mme_bearer_t *bearer = NULL;
c_uint8_t pti = NAS_PROCEDURE_TRANSACTION_IDENTITY_UNASSIGNED;
c_uint8_t ebi = NAS_EPS_BEARER_IDENTITY_UNASSIGNED;
if (!mme_ue)
{
@ -102,17 +105,28 @@ static void event_s1ap_to_nas(enb_ue_t *enb_ue, S1ap_NAS_PDU_t *nasPdu)
return;
}
sess = mme_sess_find_by_pti(mme_ue, h->procedure_transaction_identity);
if (sess)
{
event_set(&e, MME_EVT_ESM_MESSAGE);
event_set_param1(&e, (c_uintptr_t)sess->index);
event_set_param2(&e, (c_uintptr_t)nasbuf);
mme_event_send(&e);
}
pti = h->procedure_transaction_identity;
ebi = h->eps_bearer_identity;
if (ebi != NAS_EPS_BEARER_IDENTITY_UNASSIGNED)
bearer = mme_bearer_find_by_ue_ebi(mme_ue, ebi);
else if (pti != NAS_PROCEDURE_TRANSACTION_IDENTITY_UNASSIGNED)
bearer = mme_bearer_find_by_ue_pti(mme_ue, pti);
else
d_error("Can't find ESM context(UE:%s, PTI:%d)",
mme_ue->imsi_bcd, h->procedure_transaction_identity);
d_assert(0, return, "Invalid pti(%d) and ebi(%d)\n", pti, ebi);
if (!bearer)
{
sess = mme_sess_add(mme_ue, pti);
d_assert(sess, return, "Null param");
bearer = mme_default_bearer_in_sess(sess);
}
d_assert(bearer, return, "Null param");
event_set(&e, MME_EVT_ESM_MESSAGE);
event_set_param1(&e, (c_uintptr_t)bearer->index);
event_set_param2(&e, (c_uintptr_t)nasbuf);
mme_event_send(&e);
}
else
d_assert(0, pkbuf_free(nasbuf); return, "Unknown protocol:%d",

15
src/pgw/pgw_s5c_build.c
View File

@ -42,7 +42,7 @@ status_t pgw_s5c_build_create_session_response(
rsp->cause.len = sizeof(cause);
rsp->cause.data = &cause;
/* Send Control Plane(UL) : PGW-S5C */
/* Control Plane(UL) : PGW-S5C */
memset(&pgw_s5c_teid, 0, sizeof(gtp_f_teid_t));
pgw_s5c_teid.ipv4 = 1;
pgw_s5c_teid.interface_type = GTP_F_TEID_S5_S8_PGW_GTP_C;
@ -55,6 +55,7 @@ status_t pgw_s5c_build_create_session_response(
rsp->pgw_s5_s8__s2a_s2b_f_teid_for_pmip_based_interface_or_for_gtp_based_control_plane_interface.
len = GTP_F_TEID_IPV4_LEN;
/* PDN Address Allocation */
d_assert(sess->ip_pool, return CORE_ERROR, "No IP Pool");
sess->pdn.paa.pdn_type = GTP_PDN_TYPE_IPV4;
sess->pdn.paa.ipv4_addr = sess->ip_pool->ue_addr;
@ -63,12 +64,14 @@ status_t pgw_s5c_build_create_session_response(
rsp->pdn_address_allocation.data = &sess->pdn.paa;
rsp->pdn_address_allocation.len = PAA_IPV4_LEN;
/* APN Restriction */
rsp->apn_restriction.presence = 1;
rsp->apn_restriction.u8 = GTP_APN_NO_RESTRICTION;
/* TODO : APN-AMBR
* if PCRF changes APN-AMBR, this should be included. */
/* PCO */
if (req->protocol_configuration_options.presence == 1)
{
pco_len = pgw_pco_build(pco_buf, &req->protocol_configuration_options);
@ -78,6 +81,7 @@ status_t pgw_s5c_build_create_session_response(
rsp->protocol_configuration_options.len = pco_len;
}
/* Bearer EBI */
rsp->bearer_contexts_created.presence = 1;
rsp->bearer_contexts_created.eps_bearer_id.presence = 1;
rsp->bearer_contexts_created.eps_bearer_id.u8 = bearer->ebi;
@ -85,7 +89,7 @@ status_t pgw_s5c_build_create_session_response(
/* TODO : Bearer QoS
* if PCRF changes Bearer QoS, this should be included. */
/* Send Data Plane(UL) : PGW-S5U */
/* Data Plane(UL) : PGW-S5U */
memset(&pgw_s5u_teid, 0, sizeof(gtp_f_teid_t));
pgw_s5u_teid.ipv4 = 1;
pgw_s5u_teid.interface_type = GTP_F_TEID_S5_S8_PGW_GTP_U;
@ -175,15 +179,17 @@ status_t pgw_s5c_build_create_bearer_request(
req = &gtp_message.create_bearer_request;
memset(&gtp_message, 0, sizeof(gtp_message_t));
/* Linked EBI */
req->linked_eps_bearer_id.presence = 1;
req->linked_eps_bearer_id.u8 = linked_bearer->ebi;
/* Bearer EBI */
req->bearer_contexts.presence = 1;
req->bearer_contexts.eps_bearer_id.presence = 1;
req->bearer_contexts.eps_bearer_id.u8 = bearer->ebi;
/* Data Plane(UL) : PGW_S5U */
memset(&pgw_s5u_teid, 0, sizeof(gtp_f_teid_t));
pgw_s5u_teid.ipv4 = 1;
pgw_s5u_teid.interface_type = GTP_F_TEID_S5_S8_PGW_GTP_U;
@ -193,6 +199,7 @@ status_t pgw_s5c_build_create_bearer_request(
req->bearer_contexts.s5_s8_u_sgw_f_teid.data = &pgw_s5u_teid;
req->bearer_contexts.s5_s8_u_sgw_f_teid.len = GTP_F_TEID_IPV4_LEN;
/* Bearer QoS */
memset(&bearer_qos, 0, sizeof(bearer_qos));
bearer_qos.qci = bearer->qos.qci;
bearer_qos.priority_level = bearer->qos.arp.priority_level;

4
src/pgw/pgw_s5c_handler.c
View File

@ -66,12 +66,12 @@ void pgw_s5c_handle_create_session_request(
memcpy(sess->imsi, req->imsi.data, sess->imsi_len);
core_buffer_to_bcd(sess->imsi, sess->imsi_len, sess->imsi_bcd);
/* Receive Control Plane(DL) : SGW-S5C */
/* Control Plane(DL) : SGW-S5C */
sgw_s5c_teid = req->sender_f_teid_for_control_plane.data;
sess->sgw_s5c_teid = ntohl(sgw_s5c_teid->teid);
sess->sgw_s5c_addr = sgw_s5c_teid->ipv4_addr;
/* Receive Control Plane(DL) : SGW-S5U */
/* Control Plane(DL) : SGW-S5U */
sgw_s5u_teid = req->bearer_contexts_to_be_created.s5_s8_u_sgw_f_teid.data;
bearer->sgw_s5u_teid = ntohl(sgw_s5u_teid->teid);
bearer->sgw_s5u_addr = sgw_s5u_teid->ipv4_addr;