forked from acouzens/open5gs
77 lines
2.3 KiB
C
77 lines
2.3 KiB
C
#define TRACE_MODULE _pgw_handler
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#include "core_debug.h"
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#include "gtp_types.h"
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#include "pgw_event.h"
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#include "pgw_context.h"
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#include "pgw_path.h"
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#include "pgw_handler.h"
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void pgw_handle_create_session_request(
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gtp_xact_t *xact, gtp_create_session_request_t *req)
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{
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status_t rv;
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pkbuf_t *pkbuf;
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gtp_message_t gtp_message;
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c_uint8_t type = GTP_CREATE_SESSION_RESPONSE_TYPE;
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gtp_create_session_response_t *rsp = >p_message.create_session_response;
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gtp_cause_t cause;
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gtp_f_teid_t *sgw_f_teid;
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gtp_f_teid_t pgw_f_teid;
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pgw_sess_t *sess = NULL;
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d_assert(xact, return, "Null param");
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d_assert(req, return, "Null param");
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if (req->sender_f_teid_for_control_plane.presence == 0)
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{
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d_error("No Sender F-TEID for control plance");
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return;
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}
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sgw_f_teid = req->sender_f_teid_for_control_plane.data;
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if (!(sgw_f_teid->ipv4 == 1 && sgw_f_teid->ipv6 == 0 &&
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sgw_f_teid->interface_type == GTP_F_TEID_S5_S8_SGW_GTP_C))
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{
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d_error("Invalid Parameter(ipv4:%d,ipv6:%d,type:%d",
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sgw_f_teid->ipv4, sgw_f_teid->ipv6,
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sgw_f_teid->interface_type);
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return;
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}
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sess = pgw_sess_add();
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d_assert(sess, return, "sess_add failed");
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sess->sgw_teid = ntohl(sgw_f_teid->teid);
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sess->sgw_addr = sgw_f_teid->ipv4_addr;
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memset(>p_message, 0, sizeof(gtp_message_t));
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memset(&cause, 0, sizeof(cause));
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cause.cause_value = GTP_CAUSE_REQUEST_ACCEPTED;
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rsp->cause.presence = 1;
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rsp->cause.len = sizeof(cause);
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rsp->cause.data = &cause;
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memset(&pgw_f_teid, 0, sizeof(gtp_f_teid_t));
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pgw_f_teid.ipv4 = 1;
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pgw_f_teid.interface_type = GTP_F_TEID_S5_S8_PGW_GTP_C;
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pgw_f_teid.ipv4_addr = pgw_self()->s5c_addr;
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pgw_f_teid.teid = htonl(sess->teid);
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rsp->pgw_s5_s8__s2a_s2b_f_teid_for_pmip_based_interface_or_for_gtp_based_control_plane_interface.
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presence = 1;
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rsp->pgw_s5_s8__s2a_s2b_f_teid_for_pmip_based_interface_or_for_gtp_based_control_plane_interface.
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data = &pgw_f_teid;
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rsp->pgw_s5_s8__s2a_s2b_f_teid_for_pmip_based_interface_or_for_gtp_based_control_plane_interface.
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len = GTP_F_TEID_IPV4_LEN;
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rv = gtp_build_msg(&pkbuf, type, >p_message);
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d_assert(rv == CORE_OK, return, "gtp build failed");
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pgw_s5c_send_to_sgw(xact, type, sess->sgw_teid, pkbuf);
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}
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