forked from acouzens/open5gs
138 lines
3.8 KiB
C
138 lines
3.8 KiB
C
/*
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* Copyright (C) 2019 by Sukchan Lee <acetcom@gmail.com>
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*
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* This file is part of Open5GS.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "ogs-sctp.h"
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#include "ogs-app.h"
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int __ogs_sctp_domain;
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static void sctp_write_callback(short when, ogs_socket_t fd, void *data);
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int ogs_sctp_recvdata(ogs_sock_t *sock, void *msg, size_t len,
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ogs_sockaddr_t *from, ogs_sctp_info_t *sinfo)
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{
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int size;
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int flags = 0;
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do {
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size = ogs_sctp_recvmsg(sock, msg, len, from, sinfo, &flags);
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if (size < 0 || size >= OGS_MAX_SDU_LEN) {
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ogs_error("ogs_sctp_recvmsg(%d) failed(%d:%s)",
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size, errno, strerror(errno));
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return size;
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}
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if (flags & MSG_NOTIFICATION) {
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/* Nothing */
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} else if (flags & MSG_EOR) {
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break;
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} else {
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ogs_fatal("ogs_sctp_recvmsg(%d) failed(%d:%s-0x%x)",
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size, errno, strerror(errno), flags);
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ogs_fatal("Probably MME might be crashed");
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ogs_assert_if_reached();
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}
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} while(1);
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return size;
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}
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int ogs_sctp_senddata(ogs_sock_t *sock,
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ogs_pkbuf_t *pkbuf, ogs_sockaddr_t *addr)
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{
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int sent;
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ogs_assert(sock);
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ogs_assert(pkbuf);
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sent = ogs_sctp_sendmsg(sock, pkbuf->data, pkbuf->len, addr,
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ogs_sctp_ppid_in_pkbuf(pkbuf), ogs_sctp_stream_no_in_pkbuf(pkbuf));
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if (sent < 0 || sent != pkbuf->len) {
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ogs_log_message(OGS_LOG_ERROR, ogs_socket_errno,
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"ogs_sctp_senddata(len:%d,ssn:%d)",
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pkbuf->len, (int)ogs_sctp_stream_no_in_pkbuf(pkbuf));
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ogs_pkbuf_free(pkbuf);
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return OGS_ERROR;
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}
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ogs_pkbuf_free(pkbuf);
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return OGS_OK;
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}
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void ogs_sctp_write_to_buffer(ogs_sctp_sock_t *sctp, ogs_pkbuf_t *pkbuf)
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{
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ogs_assert(sctp);
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ogs_assert(pkbuf);
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ogs_list_add(&sctp->write_queue, pkbuf);
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if (!sctp->poll.write) {
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ogs_assert(sctp->sock);
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sctp->poll.write = ogs_pollset_add(ogs_app()->pollset,
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OGS_POLLOUT, sctp->sock->fd, sctp_write_callback, sctp);
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ogs_assert(sctp->poll.write);
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}
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}
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static void sctp_write_callback(short when, ogs_socket_t fd, void *data)
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{
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ogs_sctp_sock_t *sctp = data;
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ogs_pkbuf_t *pkbuf = NULL;
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ogs_assert(sctp);
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if (ogs_list_empty(&sctp->write_queue) == true) {
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ogs_assert(sctp->poll.write);
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ogs_pollset_remove(sctp->poll.write);
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sctp->poll.write = NULL;
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return;
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}
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pkbuf = ogs_list_first(&sctp->write_queue);
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ogs_assert(pkbuf);
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ogs_list_remove(&sctp->write_queue, pkbuf);
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ogs_assert(sctp->sock);
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ogs_sctp_senddata(sctp->sock, pkbuf, NULL);
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}
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void ogs_sctp_flush_and_destroy(ogs_sctp_sock_t *sctp)
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{
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ogs_pkbuf_t *pkbuf = NULL, *next_pkbuf = NULL;
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ogs_assert(sctp);
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ogs_assert(sctp->addr);
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ogs_free(sctp->addr);
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if (sctp->type == SOCK_STREAM) {
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ogs_assert(sctp->poll.read);
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ogs_pollset_remove(sctp->poll.read);
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if (sctp->poll.write)
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ogs_pollset_remove(sctp->poll.write);
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ogs_sctp_destroy(sctp->sock);
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ogs_list_for_each_safe(&sctp->write_queue, next_pkbuf, pkbuf) {
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ogs_list_remove(&sctp->write_queue, pkbuf);
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ogs_pkbuf_free(pkbuf);
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}
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}
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}
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