diff options
Diffstat (limited to 'openbsc/src/gprs/gtphub_ext.c')
-rw-r--r-- | openbsc/src/gprs/gtphub_ext.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/openbsc/src/gprs/gtphub_ext.c b/openbsc/src/gprs/gtphub_ext.c new file mode 100644 index 000000000..0a4164c73 --- /dev/null +++ b/openbsc/src/gprs/gtphub_ext.c @@ -0,0 +1,58 @@ +/* GTP Hub Implementation */ + +/* (C) 2015 by sysmocom s.f.m.c. GmbH <info@sysmocom.de> + * All Rights Reserved + * + * gtphub_ext.c -- ext means extern. This file is kept separate so that these + * functions can be wrapped for gtphub_test.c. When a function and its callers + * are in the same compilational unit, the wrappability may be optimized away. + * + * Author: Neels Hofmeyr + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <string.h> + +#include <openbsc/gtphub.h> +#include <osmocom/core/utils.h> + +#define __llist_first(head) (((head)->next == (head)) ? NULL : (head)->next) +#define llist_first(head, type, entry) llist_entry(__llist_first(head), type, entry) + +int gtphub_resolve_ggsn_addr(struct gtphub *hub, + struct osmo_sockaddr *result, + struct gtp_packet_desc *p) +{ + /* TODO This is just hardcodedly returning the first known address. + * Should resolve from actual subscriber data. */ + struct gtphub_peer *peer = llist_first(&hub->to_ggsns[GTPH_PLANE_CTRL].peers, + struct gtphub_peer, entry); + if (!peer) + return -1; + + struct gtphub_peer_addr *pa = llist_first(&peer->addresses, + struct gtphub_peer_addr, entry); + if (!pa) + return -1; + + struct gtphub_peer_port *pp = llist_first(&pa->ports, + struct gtphub_peer_port, entry); + if (!pp) + return -1; + + *result = pp->sa; + return 0; +} + |