59 lines
1.9 KiB
C
59 lines
1.9 KiB
C
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/* GTP Hub Implementation */
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/* (C) 2015 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
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* All Rights Reserved
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*
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* gtphub_ext.c -- ext means extern. This file is kept separate so that these
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* functions can be wrapped for gtphub_test.c. When a function and its callers
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* are in the same compilational unit, the wrappability may be optimized away.
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*
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* Author: Neels Hofmeyr
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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 Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <string.h>
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#include <openbsc/gtphub.h>
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#include <osmocom/core/utils.h>
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#define __llist_first(head) (((head)->next == (head)) ? NULL : (head)->next)
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#define llist_first(head, type, entry) llist_entry(__llist_first(head), type, entry)
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int gtphub_resolve_ggsn_addr(struct gtphub *hub,
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struct osmo_sockaddr *result,
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struct gtp_packet_desc *p)
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{
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/* TODO This is just hardcodedly returning the first known address.
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* Should resolve from actual subscriber data. */
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struct gtphub_peer *peer = llist_first(&hub->to_ggsns[GTPH_PLANE_CTRL].peers,
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struct gtphub_peer, entry);
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if (!peer)
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return -1;
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struct gtphub_peer_addr *pa = llist_first(&peer->addresses,
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struct gtphub_peer_addr, entry);
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if (!pa)
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return -1;
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struct gtphub_peer_port *pp = llist_first(&pa->ports,
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struct gtphub_peer_port, entry);
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if (!pp)
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return -1;
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*result = pp->sa;
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return 0;
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}
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